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	diff --git a/src/mail.cpp b/src/mail.cpp
	index 32298ff..cf7d794 100644
	--- a/src/mail.cpp
	+++ b/src/mail.cpp
	@@ -1,5166 +1,5168 @@
	/* @file mail.h
	* @brief High level class to work with Outlook Mailitems.
	*
	* Copyright (C) 2015, 2016 by Bundesamt für Sicherheit in der Informationstechnik
	* Software engineering by Intevation GmbH
	* Copyright (C) 2019 g10code GmbH
	*
	* This file is part of GpgOL.
	*
	* GpgOL is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* GpgOL is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include "config.h"

	#include "categorymanager.h"
	#include "dialogs.h"
	#include "common.h"
	#include "mail.h"
	#include "eventsinks.h"
	#include "attachment.h"
	#include "mapihelp.h"
	#include "mimemaker.h"
	#include "revert.h"
	#include "gpgoladdin.h"
	#include "mymapitags.h"
	#include "parsecontroller.h"
	#include "cryptcontroller.h"
	#include "windowmessages.h"
	#include "mlang-charset.h"
	#include "wks-helper.h"
	#include "keycache.h"
	#include "cpphelp.h"
	#include "addressbook.h"
	#include "recipient.h"

	#include <gpgme++/configuration.h>
	#include <gpgme++/tofuinfo.h>
	#include <gpgme++/verificationresult.h>
	#include <gpgme++/decryptionresult.h>
	#include <gpgme++/key.h>
	#include <gpgme++/context.h>
	#include <gpgme++/keylistresult.h>
	#include <gpg-error.h>

	#include <map>
	#include <unordered_map>
	#include <set>
	#include <vector>
	#include <memory>
	#include <sstream>

	#undef _
	#define _(a) utf8_gettext (a)

	using namespace GpgME;

	static std::map<LPDISPATCH, Mail*> s_mail_map;
	static std::map<std::string, Mail*> s_uid_map;
	static std::map<std::string, LPDISPATCH> s_folder_events_map;
	static std::set<std::string> uids_searched;
	static std::set<std::string> s_entry_ids_printing;

	GPGRT_LOCK_DEFINE (mail_map_lock);
	GPGRT_LOCK_DEFINE (uid_map_lock);

	static Mail *s_last_mail;
	Mail *g_mail_copy_triggerer = nullptr;

	#define COLOR_DARK_GREY "#f0f0f0"
	#define COLOR_LIGHT_GREY "#f8f8f8"

	const char *HTML_PREVIEW_PLACEHOLDER =
	"<html><head></head><body>"
	"<table border=\"0\" width=\"100%%\" cellspacing=\"1\" cellpadding=\"1\" bgcolor=\"" COLOR_DARK_GREY "\">"
	"<tr>"
	"<td bgcolor=\"" COLOR_DARK_GREY "\">"
	"<p><span style=\"font-weight:600; background-color:" COLOR_DARK_GREY ";\"><center>%s %s</center><span></p></td></tr>"
	"<tr>"
	"<td bgcolor=\"" COLOR_DARK_GREY "\">"
	"<p><span style=\"font-weight:600; background-color:" COLOR_DARK_GREY ";\"><center>%s</center><span></p></td></tr>"
	"<tr>"
	"<td bgcolor=\"" COLOR_LIGHT_GREY "\">"
	"%s"
	"</td></tr>"
	"</table></body></html>";

	const char *TEXT_PREVIEW_PLACEHOLDER = "%s %s %s\n\n%s";
	#define COPYBUFSIZE (8 * 1024)

	Mail::Mail (LPDISPATCH mailitem) :
	m_mailitem(mailitem),
	m_currentItemRef(nullptr),
	m_processed(false),
	m_needs_wipe(false),
	m_needs_save(false),
	m_crypt_successful(false),
	m_is_smime(false),
	m_is_smime_checked(false),
	m_is_signed(false),
	m_is_valid(false),
	m_close_triggered(false),
	m_is_html_alternative(false),
	m_needs_encrypt(false),
	m_moss_position(0),
	m_crypto_flags(0),
	m_cached_html_body(nullptr),
	m_cached_plain_body(nullptr),
	m_type(MSGTYPE_UNKNOWN),
	m_do_inline(false),
	m_is_gsuite(false),
	m_crypt_state(NoCryptMail),
	m_window(nullptr),
	m_async_crypt_disabled(false),
	m_is_forwarded_crypto_mail(false),
	m_is_send_again(false),
	m_disable_att_remove_warning(false),
	m_manual_crypto_opts(false),
	m_first_autosecure_check(true),
	m_locate_count(0),
	m_pass_write(false),
	m_locate_in_progress(false),
	m_is_junk(false),
	m_is_draft_encrypt(false),
	m_decrypt_again(false),
	m_printing(false),
	m_recipients_set(false),
	m_is_split_copy(false),
	m_attachs_added(false)
	{
	TSTART;
	if (getMailForItem (mailitem))
	{
	log_error ("Mail object for item: %p already exists. Bug.",
	mailitem);
	TRETURN;
	}

	m_event_sink = install_MailItemEvents_sink (mailitem);
	if (!m_event_sink)
	{
	/* Should not happen but in that case we don't add us to the list
	and just release the Mail item. */
	log_error ("%s:%s: Failed to install MailItemEvents sink.",
	SRCNAME, __func__);
	gpgol_release(mailitem);
	TRETURN;
	}
	gpgol_lock (&mail_map_lock);
	s_mail_map.insert (std::pair<LPDISPATCH, Mail *> (mailitem, this));
	gpgol_unlock (&mail_map_lock);
	s_last_mail = this;
	memdbg_ctor ("Mail");
	TRETURN;
	}

	GPGRT_LOCK_DEFINE(dtor_lock);

	// static
	void
	Mail::lockDelete ()
	{
	TSTART;
	gpgol_lock (&dtor_lock);
	TRETURN;
	}

	// static
	void
	Mail::unlockDelete ()
	{
	TSTART;
	gpgol_unlock (&dtor_lock);
	TRETURN;
	}

	Mail::~Mail()
	{
	TSTART;
	/* This should fix a race condition where the mail is
	deleted before the parser is accessed in the decrypt
	thread. The shared_ptr of the parser then ensures
	that the parser is alive even if the mail is deleted
	while parsing. */
	gpgol_lock (&dtor_lock);
	memdbg_dtor ("Mail");
	log_oom ("%s:%s: dtor: Mail: %p item: %p",
	SRCNAME, __func__, this, m_mailitem);
	std::map<LPDISPATCH, Mail *>::iterator it;

	log_oom ("%s:%s: Detaching event sink",
	SRCNAME, __func__);
	detach_MailItemEvents_sink (m_event_sink);
	gpgol_release(m_event_sink);

	log_oom ("%s:%s: Erasing mail",
	SRCNAME, __func__);
	gpgol_lock (&mail_map_lock);
	it = s_mail_map.find(m_mailitem);
	if (it != s_mail_map.end())
	{
	s_mail_map.erase (it);
	}
	gpgol_unlock (&mail_map_lock);

	if (!m_uuid.empty())
	{
	gpgol_lock (&uid_map_lock);
	auto it2 = s_uid_map.find(m_uuid);
	if (it2 != s_uid_map.end())
	{
	s_uid_map.erase (it2);
	}
	gpgol_unlock (&uid_map_lock);
	}

	log_oom ("%s:%s: removing categories",
	SRCNAME, __func__);
	removeCategories_o ();

	log_oom ("%s:%s: releasing mailitem",
	SRCNAME, __func__);
	gpgol_release(m_mailitem);
	xfree (m_cached_html_body);
	xfree (m_cached_plain_body);
	if (!m_uuid.empty())
	{
	log_oom ("%s:%s: destroyed: %p uuid: %s",
	SRCNAME, __func__, this, m_uuid.c_str());
	}
	else
	{
	log_oom ("%s:%s: non crypto (or sent) mail: %p destroyed",
	SRCNAME, __func__, this);
	}
	log_oom ("%s:%s: nulling shared pointer",
	SRCNAME, __func__);
	m_parser = nullptr;
	m_crypter = nullptr;

	releaseCurrentItem();
	gpgol_unlock (&dtor_lock);
	log_oom ("%s:%s: returning",
	SRCNAME, __func__);
	TRETURN;
	}

	//static
	Mail *
	Mail::getMailForItem (LPDISPATCH mailitem)
	{
	TSTART;
	if (!mailitem)
	{
	TRETURN NULL;
	}
	std::map<LPDISPATCH, Mail *>::iterator it;
	gpgol_lock (&mail_map_lock);
	it = s_mail_map.find(mailitem);
	gpgol_unlock (&mail_map_lock);
	if (it == s_mail_map.end())
	{
	TRETURN NULL;
	}
	TRETURN it->second;
	}

	//static
	Mail *
	Mail::getMailForUUID (const char *uuid)
	{
	TSTART;
	if (!uuid)
	{
	TRETURN NULL;
	}
	gpgol_lock (&uid_map_lock);
	auto it = s_uid_map.find(std::string(uuid));
	gpgol_unlock (&uid_map_lock);
	if (it == s_uid_map.end())
	{
	TRETURN NULL;
	}
	TRETURN it->second;
	}

	//static
	bool
	Mail::isValidPtr (const Mail *mail)
	{
	TSTART;
	gpgol_lock (&mail_map_lock);
	auto it = s_mail_map.begin();
	while (it != s_mail_map.end())
	{
	if (it->second == mail)
	{
	gpgol_unlock (&mail_map_lock);
	TRETURN true;
	}
	++it;
	}
	gpgol_unlock (&mail_map_lock);
	TRETURN false;
	}

	int
	Mail::preProcessMessage_m ()
	{
	TSTART;
	if (m_is_split_copy)
	{
	log_dbg ("Mail was created as a copy by gpgol. Addr: %p",
	this);
	TRETURN 0;
	}
	LPMESSAGE message = get_oom_base_message (m_mailitem);
	if (!message)
	{
	log_error ("%s:%s: Failed to get base message.",
	SRCNAME, __func__);
	TRETURN 0;
	}
	log_oom ("%s:%s: GetBaseMessage OK for %p.",
	SRCNAME, __func__, m_mailitem);
	/* Change the message class here. It is important that
	we change the message class in the before read event
	regardless if it is already set to one of GpgOL's message
	classes. Changing the message class (even if we set it
	to the same value again that it already has) causes
	Outlook to reconsider what it "knows" about a message
	and reread data from the underlying base message. */
	mapi_change_message_class (message, 1, &m_type);

	if (m_type == MSGTYPE_UNKNOWN)
	{
	/* For unknown messages we still need to check for autocrypt
	headers. If the mails are crypto messages the autocrypt
	stuff is handled in the parsecontroller. */
	autocrypt_s ac;
	parseHeaders_m ();
	if (m_header_info.acInfo.exists)
	{
	log_debug ("%s:%s: Importing autocrypt header from unencrypted "
	"mail.", SRCNAME, __func__);
	KeyCache::import_pgp_key_data (m_header_info.acInfo.data);
	}
	gpgol_release (message);
	TRETURN 0;
	}

	/* We could check PR_ACCESS here in MAPI to figure out if we can
	modify a mail or not. But this strangely does not fully tell
	us the truth. For example for a read only mail we can modify
	the body of the mail but "add oom attachments" will fail.

	Add OOM attachments has error handling and it will show the
	user that missing rights are an issue. */

	/* Create moss attachments here so that they are properly
	hidden when the item is read into the model. */
	LPMESSAGE parsed_message = get_oom_message (m_mailitem);
	m_moss_position = mapi_mark_or_create_moss_attach (message, parsed_message,
	m_type);
	gpgol_release (parsed_message);
	if (!m_moss_position)
	{
	log_error ("%s:%s: Failed to find moss attachment.",
	SRCNAME, __func__);
	m_type = MSGTYPE_UNKNOWN;
	}

	gpgol_release (message);
	TRETURN 0;
	}

	static LPDISPATCH
	get_attachment_o (LPDISPATCH mailitem, int pos)
	{
	TSTART;
	LPDISPATCH attachment;
	LPDISPATCH attachments = get_oom_object (mailitem, "Attachments");
	if (!attachments)
	{
	log_debug ("%s:%s: Failed to get attachments.",
	SRCNAME, __func__);
	TRETURN NULL;
	}

	std::string item_str;
	int count = get_oom_int (attachments, "Count");
	if (count < 1)
	{
	log_debug ("%s:%s: Invalid attachment count: %i.",
	SRCNAME, __func__, count);
	gpgol_release (attachments);
	TRETURN NULL;
	}
	if (pos > 0)
	{
	item_str = std::string("Item(") + std::to_string(pos) + ")";
	}
	else
	{
	item_str = std::string("Item(") + std::to_string(count) + ")";
	}
	attachment = get_oom_object (attachments, item_str.c_str());
	gpgol_release (attachments);

	TRETURN attachment;
	}

	/** Helper to check that all attachments are hidden, to be
	called before crypto. */
	int
	Mail::checkAttachments_o (bool silent)
	{
	TSTART;
	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");
	if (!attachments)
	{
	log_debug ("%s:%s: Failed to get attachments.",
	SRCNAME, __func__);
	TRETURN 1;
	}
	int count = count_visible_attachments (attachments);
	if (!count)
	{
	gpgol_release (attachments);
	TRETURN 0;
	}

	std::string message;

	if (isEncrypted () && isSigned ())
	{
	message += _("Not all attachments were encrypted or signed.\n"
	"The unsigned / unencrypted attachments are:\n\n");
	}
	else if (isSigned ())
	{
	message += _("Not all attachments were signed.\n"
	"The unsigned attachments are:\n\n");
	}
	else if (isEncrypted ())
	{
	message += _("Not all attachments were encrypted.\n"
	"The unencrypted attachments are:\n\n");
	}
	else
	{
	gpgol_release (attachments);
	TRETURN 0;
	}

	bool foundOne = false;
	std::vector <LPDISPATCH> to_delete;
	for (int i = 1; i <= count; i++)
	{
	std::string item_str;
	item_str = std::string("Item(") + std::to_string (i) + ")";
	LPDISPATCH oom_attach = get_oom_object (attachments, item_str.c_str ());
	if (!oom_attach)
	{
	log_error ("%s:%s: Failed to get attachment.",
	SRCNAME, __func__);
	continue;
	}
	VARIANT var;
	VariantInit (&var);
	if (get_pa_variant (oom_attach, PR_ATTACHMENT_HIDDEN_DASL, &var) \|\|
	(var.vt == VT_BOOL && var.boolVal == VARIANT_FALSE))
	{
	foundOne = true;
	char *dispName = get_oom_string (oom_attach, "DisplayName");
	message += dispName ? dispName : "Unknown";
	xfree (dispName);
	message += "\n";
	to_delete.push_back (oom_attach);
	}
	else
	{
	gpgol_release (oom_attach);
	}
	VariantClear (&var);
	}

	/* In silent mode we remove the unencrypted attachments silently */
	if (foundOne)
	{
	for (auto attachment: to_delete)
	{
	if (silent)
	{
	m_disable_att_remove_warning = true;
	log_debug ("%s:%s: Deleting bad attachment",
	SRCNAME, __func__);
	if (invoke_oom_method (attachment, "Delete", NULL))
	{
	log_error ("%s:%s: Error deleting attachment: %i",
	SRCNAME, __func__, __LINE__);
	}
	m_disable_att_remove_warning = false;
	}
	gpgol_release (attachment);
	}
	}
	gpgol_release (attachments);
	if (foundOne && !silent)
	{
	message += "\n";
	message += _("Note: The attachments may be encrypted or signed "
	"on a file level but the GpgOL status does not apply to them.");
	wchar_t *wmsg = utf8_to_wchar (message.c_str ());
	wchar_t *wtitle = utf8_to_wchar (_("GpgOL Warning"));
	MessageBoxW (get_active_hwnd (), wmsg, wtitle,
	MB_ICONWARNING\|MB_OK);
	xfree (wmsg);
	xfree (wtitle);
	}
	TRETURN 0;
	}

	/** Get the cipherstream of the mailitem. */
	static LPSTREAM
	get_attachment_stream_o (LPDISPATCH mailitem, int pos)
	{
	TSTART;
	if (!pos)
	{
	log_debug ("%s:%s: Called with zero pos.",
	SRCNAME, __func__);
	TRETURN NULL;
	}
	LPDISPATCH attachment = get_attachment_o (mailitem, pos);
	LPSTREAM stream = NULL;

	if (!attachment)
	{
	// For opened messages that have ms-tnef type we
	// create the moss attachment but don't find it
	// in the OOM. Try to find it through MAPI.
	HRESULT hr;
	log_debug ("%s:%s: Failed to find MOSS Attachment. "
	"Fallback to MAPI.", SRCNAME, __func__);
	LPMESSAGE message = get_oom_message (mailitem);
	if (!message)
	{
	log_debug ("%s:%s: Failed to get MAPI Interface.",
	SRCNAME, __func__);
	TRETURN NULL;
	}
	hr = gpgol_openProperty (message, PR_BODY_A, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	gpgol_release (message);
	if (hr)
	{
	log_debug ("%s:%s: OpenProperty failed: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}
	TRETURN stream;
	}

	LPATTACH mapi_attachment = NULL;

	mapi_attachment = (LPATTACH) get_oom_iunknown (attachment,
	"MapiObject");
	gpgol_release (attachment);
	if (!mapi_attachment)
	{
	log_debug ("%s:%s: Failed to get MapiObject of attachment: %p",
	SRCNAME, __func__, attachment);
	TRETURN NULL;
	}
	if (FAILED (gpgol_openProperty (mapi_attachment, PR_ATTACH_DATA_BIN,
	&IID_IStream, 0, MAPI_MODIFY,
	(LPUNKNOWN*) &stream)))
	{
	log_debug ("%s:%s: Failed to open stream for mapi_attachment: %p",
	SRCNAME, __func__, mapi_attachment);
	gpgol_release (mapi_attachment);
	TRETURN nullptr;
	}
	gpgol_release (mapi_attachment);
	TRETURN stream;
	}

	#if 0

	This should work. But Outlook says no. See the comment in set_pa_variant
	about this. I left the code here as an example how to work with
	safearrays and how this probably should work.

	static int
	copy_data_property(LPDISPATCH target, std::shared_ptr<Attachment> attach)
	{
	TSTART;
	VARIANT var;
	VariantInit (&var);

	/* Get the size */
	off_t size = attach->get_data ().seek (0, SEEK_END);
	attach->get_data ().seek (0, SEEK_SET);

	if (!size)
	{
	TRACEPOINT;
	TRETURN 1;
	}

	if (!get_pa_variant (target, PR_ATTACH_DATA_BIN_DASL, &var))
	{
	log_debug("Have variant. type: %x", var.vt);
	}
	else
	{
	log_debug("failed to get variant.");
	}

	/* Set the type to an array of unsigned chars (OLE SAFEARRAY) */
	var.vt = VT_ARRAY \| VT_UI1;

	/* Set up the bounds structure */
	SAFEARRAYBOUND rgsabound[1];
	rgsabound[0].cElements = static_cast<unsigned long> (size);
	rgsabound[0].lLbound = 0;

	/* Create an OLE SAFEARRAY */
	var.parray = SafeArrayCreate (VT_UI1, 1, rgsabound);
	if (var.parray == NULL)
	{
	TRACEPOINT;
	VariantClear(&var);
	TRETURN 1;
	}

	void *buffer = NULL;
	/* Get a safe pointer to the array */
	if (SafeArrayAccessData(var.parray, &buffer) != S_OK)
	{
	TRACEPOINT;
	VariantClear(&var);
	TRETURN 1;
	}

	/* Copy data to it */
	size_t nread = attach->get_data ().read (buffer, static_cast<size_t> (size));

	if (nread != static_cast<size_t> (size))
	{
	TRACEPOINT;
	VariantClear(&var);
	TRETURN 1;
	}

	// Unlock the variant data /
	if (SafeArrayUnaccessData(var.parray) != S_OK)
	{
	TRACEPOINT;
	VariantClear(&var);
	TRETURN 1;
	}

	if (set_pa_variant (target, PR_ATTACH_DATA_BIN_DASL, &var))
	{
	TRACEPOINT;
	VariantClear(&var);
	TRETURN 1;
	}

	VariantClear(&var);
	TRETURN 0;
	}
	#endif

	static int
	copy_attachment_to_file (std::shared_ptr<Attachment> att, HANDLE hFile)
	{
	TSTART;
	char copybuf[COPYBUFSIZE];
	size_t nread;

	/* Security considerations: Writing the data to a temporary
	file is necessary as neither MAPI manipulation works in the
	read event to transmit the data nor Property Accessor
	works (see above). From a security standpoint there is a
	short time where the temporary files are on disk. Tempdir
	should be protected so that only the user can read it. Thus
	we have a local attack that could also take the data out
	of Outlook. FILE_SHARE_READ is necessary so that outlook
	can read the file.

	A bigger concern is that the file is manipulated
	by another software to fake the signature state. So
	we keep the write exlusive to us.

	We delete the file before closing the write file handle.
	*/

	/* Make sure we start at the beginning */
	att->get_data ().seek (0, SEEK_SET);
	while ((nread = att->get_data ().read (copybuf, COPYBUFSIZE)))
	{
	DWORD nwritten;
	if (!WriteFile (hFile, copybuf, nread, &nwritten, NULL))
	{
	log_error ("%s:%s: Failed to write in tmp attachment.",
	SRCNAME, __func__);
	TRETURN 1;
	}
	if (nread != nwritten)
	{
	log_error ("%s:%s: Write truncated.",
	SRCNAME, __func__);
	TRETURN 1;
	}
	}
	TRETURN 0;
	}

	/** Sets some meta data on the last attachment added. The meta
	data is taken from the attachment object. */
	static int
	fixup_last_attachment_o (LPDISPATCH mail,
	std::shared_ptr<Attachment> attachment)
	{
	TSTART;
	/* Currently we only set content id */
	std::string cid = attachment->get_content_id ();
	if (cid.empty())
	{
	log_debug ("%s:%s: Content id not found.",
	SRCNAME, __func__);
	TRETURN 0;
	}

	/* We add this safeguard here was we somehow can't trigger Outlook
	* not to hide attachments with content id (see below). So we
	* have to make double sure that the attachment is actually referenced
	* in the HTML before we hide it. In doubt it is better to "break"
	* the content id reference but show the Attachment as a hidden
	* attachment can appear to be data loss. See T4526 T4203. */
	char *body = get_oom_string (mail, "HTMLBody");
	if (!body)
	{
	log_debug ("%s:%s: No HTML Body.",
	SRCNAME, __func__);
	TRETURN 0;
	}

	if (cid.front () == '<')
	{
	cid.erase (0, 1);
	}
	if (cid.back() == '>')
	{
	cid.pop_back ();
	}

	char *cid_pos = strstr (body, cid.c_str ());
	xfree (body);
	if (!cid_pos)
	{
	log_debug ("%s:%s: Failed to find cid: '%s' in body. Not setting cid.",
	SRCNAME, __func__, anonstr (cid.c_str ()));

	TRETURN 0;
	}

	LPDISPATCH attach = get_attachment_o (mail, -1);
	if (!attach)
	{
	log_error ("%s:%s: No attachment.",
	SRCNAME, __func__);
	TRETURN 1;
	}
	int ret = put_pa_string (attach,
	PR_ATTACH_CONTENT_ID_DASL,
	cid.c_str ());

	log_debug ("%s:%s: Set attachment content id to: '%s'",
	SRCNAME, __func__, anonstr (cid.c_str()));
	if (ret)
	{
	log_error ("%s:%s: Failed.", SRCNAME, __func__);
	gpgol_release (attach);
	}
	#if 0

	The following was an experiement to delete the ATTACH_FLAGS values
	so that we are not hiding attachments.

	LPATTACH mapi_attach = (LPATTACH) get_oom_iunknown (attach, "MAPIOBJECT");
	if (mapi_attach)
	{
	SPropTagArray proparray;
	HRESULT hr;

	proparray.cValues = 1;
	proparray.aulPropTag[0] = 0x37140003;
	hr = mapi_attach->DeleteProps (&proparray, NULL);
	if (hr)
	{
	log_error ("%s:%s: can't delete property attach flags: hr=%#lx\n",
	SRCNAME, __func__, hr);
	ret = -1;
	}
	gpgol_release (mapi_attach);
	}
	else
	{
	log_error ("%s:%s: Failed to get mapi attachment.",
	SRCNAME, __func__);
	}
	#endif
	gpgol_release (attach);
	TRETURN ret;
	}

	/** Helper to update the attachments of a mail object in oom.
	does not modify the underlying mapi structure. */
	int
	Mail::add_attachments_o (std::vector<std::shared_ptr<Attachment> > attachments)
	{
	TSTART;
	if (m_attachs_added)
	{
	log_dbg ("Not adding attachments as they are already there.");
	TRETURN 0;
	}
	bool anyError = false;
	m_disable_att_remove_warning = true;

	std::string addErrStr;
	int addErrCode = 0;
	std::vector<std::string> failedNames;
	for (auto att: attachments)
	{
	int err = 0;
	const auto dispName = att->get_display_name ();
	if (dispName.empty())
	{
	log_error ("%s:%s: Ignoring attachment without display name.",
	SRCNAME, __func__);
	continue;
	}
	wchar_t* wchar_name = utf8_to_wchar (dispName.c_str());
	if (!wchar_name)
	{
	log_error ("%s:%s: Failed to convert '%s' to wchar.",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	continue;
	}

	HANDLE hFile;
	wchar_t* wchar_file = get_tmp_outfile (wchar_name,
	&hFile);
	if (!wchar_file)
	{
	log_error ("%s:%s: Failed to obtain a tmp filename for: %s",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	err = 1;
	}
	if (!err && copy_attachment_to_file (att, hFile))
	{
	log_error ("%s:%s: Failed to copy attachment %s to temp file",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	err = 1;
	}
	if (!err && add_oom_attachment (m_mailitem, wchar_file, wchar_name,
	addErrStr, &addErrCode))
	{
	log_error ("%s:%s: Failed to add attachment: %s",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	failedNames.push_back (dispName);
	err = 1;
	}
	if (hFile && hFile != INVALID_HANDLE_VALUE)
	{
	CloseHandle (hFile);
	}
	if (wchar_file && !DeleteFileW (wchar_file))
	{
	log_error ("%s:%s: Failed to delete tmp attachment for: %s",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	err = 1;
	}
	xfree (wchar_file);
	xfree (wchar_name);

	if (!err)
	{
	log_debug ("%s:%s: Added attachment '%s'",
	SRCNAME, __func__, anonstr (dispName.c_str()));
	err = fixup_last_attachment_o (m_mailitem, att);
	}
	if (err)
	{
	anyError = true;
	}
	}
	if (anyError)
	{
	std::string msg = _("Not all attachments can be shown.\n\n"
	"The hidden attachments are:");
	msg += "\n";

	std::string filenames;
	join (failedNames, "\n", filenames);
	msg += filenames;
	msg += "\n\n";

	if (addErrCode == 0x80004005)
	{
	msg += _("The mail exceeds the maximum size GpgOL "
	"can handle on this server.");
	}
	else
	{
	msg += _("Reason:");
	msg += " " + addErrStr;
	}
	gpgol_message_box (getWindow (),
	msg.c_str (), _("GpgOL"), MB_OK);

	}
	m_disable_att_remove_warning = false;
	m_attachs_added = true;
	TRETURN anyError;
	}

	GPGRT_LOCK_DEFINE(parser_lock);

	static DWORD WINAPI
	do_parsing (LPVOID arg)
	{
	TSTART;
	gpgol_lock (&dtor_lock);
	/* We lock with mail dtors so we can be sure the mail->parser
	call is valid. */
	Mail mail = (Mail )arg;
	if (!Mail::isValidPtr (mail))
	{
	log_debug ("%s:%s: canceling parsing for: %p already deleted",
	SRCNAME, __func__, arg);
	gpgol_unlock (&dtor_lock);
	TRETURN 0;
	}

	blockInv ();
	/* This takes a shared ptr of parser. So the parser is
	still valid when the mail is deleted. */
	auto parser = mail->parser ();
	gpgol_unlock (&dtor_lock);

	gpgol_lock (&parser_lock);
	/* We lock the parser here to avoid too many
	decryption attempts if there are
	multiple mailobjects which might have already
	been deleted (e.g. by quick switches of the mailview.)
	Let's rather be a bit slower.
	*/
	log_debug ("%s:%s: preparing the parser for: %p",
	SRCNAME, __func__, arg);

	if (!Mail::isValidPtr (mail))
	{
	log_debug ("%s:%s: cancel for: %p already deleted",
	SRCNAME, __func__, arg);
	gpgol_unlock (&parser_lock);
	unblockInv();
	TRETURN 0;
	}

	if (!parser)
	{
	log_error ("%s:%s: no parser found for mail: %p",
	SRCNAME, __func__, arg);
	gpgol_unlock (&parser_lock);
	unblockInv();
	TRETURN -1;
	}

	bool is_smime = mail->isSMIME ();

	std::vector<GpgME::Key> senderKey;
	if (!is_smime)
	{
	senderKey = KeyCache::instance ()->getEncryptionKeys (mail->getSender (),
	GpgME::OpenPGP);
	}
	bool has_already_preview = (mail->msgtype () == MSGTYPE_GPGOL_MULTIPART_SIGNED &&
	!mail->getOriginalBody ().empty ());
	if (!has_already_preview && (senderKey.empty () \|\| is_smime) &&
	KeyCache::instance ()->protocolIsOnline (is_smime ? GpgME::CMS :
	GpgME::OpenPGP) &&
	!opt.sync_dec)
	{
	log_dbg ("Op might be online. Doing two pass verify.");
	parser->parse (true);
	const auto verify_result = parser->verify_result ();
	if (verify_result.numSignatures ())
	{
	log_dbg ("Have signature, needs second pass.");
	do_in_ui_thread (SHOW_PREVIEW, arg);
	if (!Mail::isValidPtr (mail))
	{
	log_debug ("%s:%s: canceling parsing for: %p now deleted",
	SRCNAME, __func__, arg);
	gpgol_unlock (&parser_lock);
	unblockInv();
	TRETURN 0;
	}
	log_dbg ("Preview updated.");
	/* Sleep (10000); */
	parser->parse (false);
	log_dbg ("Second parse done.");
	}
	if (!opt.sync_dec)
	{
	do_in_ui_thread (PARSING_DONE, arg);
	}
	}
	else
	{
	parser->parse (false);
	if (!opt.sync_dec)
	{
	do_in_ui_thread (PARSING_DONE, arg);
	}
	}
	gpgol_unlock (&parser_lock);
	unblockInv();
	TRETURN 0;
	}

	/* How encryption is done:

	There are two modes of encryption. Synchronous and Async.
	If async is used depends on the value of mail->async_crypt_disabled.

	Synchronous crypto:

	> Send Event < \| State NoCryptMail
	Needs Crypto ? (get_gpgol_draft_info_flags != 0)

	-> No:
	Pass send -> unencrypted mail.

	-> Yes:
	mail->update_oom_data
	State = Mail::NeedsFirstAfterWrite
	checkSyncCrypto_o
	invoke_oom_method (m_object, "Save", NULL);

	> Write Event <
	Pass because is_crypto_mail is false (not a decrypted mail)

	> AfterWrite Event < \| State NeedsFirstAfterWrite
	State = NeedsActualCrypo
	encrypt_sign_start
	collect_input_data
	-> Check if Inline PGP should be used
	do_crypt
	-> Resolve keys / do crypto

	State = NeedsUpdateInMAPI
	update_crypt_mapi
	crypter->update_mail_mapi
	if (inline) (Meaning PGP/Inline)
	<-- do nothing.
	else
	build MSOXSMIME attachment and clear body / attachments.

	State = NeedsUpdateInOOM
	<- Back to Send Event
	update_crypt_oom
	-> Cleans body or sets PGP/Inline body. (inline_body_to_body)
	State = WantsSendMIME or WantsSendInline

	-> Saftey check "has_crypted_or_empty_body"
	-> If MIME Mail do the T3656 check.

	Send.

	State order for "inline_response" (sync) Mails.
	NoCryptMail
	NeedsFirstAfterWrite
	NeedsActualCrypto
	NeedsUpdateInMAPI
	NeedsUpdateInOOM
	WantsSendMIME (or inline for PGP Inline)
	-> Send.

	State order for async Mails
	NoCryptMail
	NeedsFirstAfterWrite
	NeedsActualCrypto
	-> Cancel Send.
	Windowmessages -> Crypto Done
	NeedsUpdateInOOM
	NeedsSecondAfterWrite
	trigger Save.
	NeedsUpdateInMAPI
	WantsSendMIME
	trigger Send.
	*/
	static DWORD WINAPI
	do_crypt (LPVOID arg)
	{
	TSTART;
	gpgol_lock (&dtor_lock);
	/* We lock with mail dtors so we can be sure the mail->parser
	call is valid. */
	Mail mail = (Mail )arg;
	if (!Mail::isValidPtr (mail))
	{
	log_debug ("%s:%s: canceling crypt for: %p already deleted",
	SRCNAME, __func__, arg);
	gpgol_unlock (&dtor_lock);
	TRETURN 0;
	}
	if (mail->cryptState () != Mail::NeedsActualCrypt)
	{
	log_debug ("%s:%s: invalid state %i",
	SRCNAME, __func__, mail->cryptState ());
	mail->enableWindow ();
	gpgol_unlock (&dtor_lock);
	TRETURN -1;
	}

	/* This takes a shared ptr of crypter. So the crypter is
	still valid when the mail is deleted. */
	auto crypter = mail->cryper ();
	gpgol_unlock (&dtor_lock);

	if (!crypter)
	{
	log_error ("%s:%s: no crypter found for mail: %p",
	SRCNAME, __func__, arg);
	gpgol_unlock (&parser_lock);
	mail->enableWindow ();
	TRETURN -1;
	}

	GpgME::Error err;
	std::string diag;
	int rc = crypter->do_crypto(err, diag);

	gpgol_lock (&dtor_lock);
	if (!Mail::isValidPtr (mail))
	{
	log_debug ("%s:%s: aborting crypt for: %p already deleted",
	SRCNAME, __func__, arg);
	gpgol_unlock (&dtor_lock);
	TRETURN 0;
	}

	mail->enableWindow ();

	if (rc == -1 \|\| err)
	{
	mail->resetCrypter ();
	crypter = nullptr;
	if (err)
	{
	char *buf = nullptr;
	gpgrt_asprintf (&buf, _("Crypto operation failed:\n%s"),
	err.asString());
	std::string msg = buf;
	memdbg_alloc (buf);
	xfree (buf);
	if (!diag.empty())
	{
	msg += "\n\n";
	msg += _("Diagnostics");
	msg += ":\n";
	msg += diag;
	}
	gpgol_message_box (mail->getWindow (), msg.c_str (),
	_("GpgOL"), MB_OK);
	}
	else
	{
	gpgol_bug (mail->getWindow (),
	ERR_CRYPT_RESOLVER_FAILED);
	}
	}

	if (rc \|\| err.isCanceled())
	{
	log_debug ("%s:%s: crypto failed for: %p with: %i err: %i",
	SRCNAME, __func__, arg, rc, err.code());
	mail->setCryptState (Mail::NoCryptMail);
	mail->setIsDraftEncrypt (false);
	mail->resetCrypter ();
	crypter = nullptr;
	gpgol_unlock (&dtor_lock);

	if (rc != -3)
	{
	mail->resetRecipients ();
	}
	TRETURN rc;
	}

	if (!mail->isAsyncCryptDisabled ())
	{
	mail->setCryptState (Mail::NeedsUpdateInOOM);
	gpgol_unlock (&dtor_lock);
	// This deletes the Mail in Outlook 2010
	do_in_ui_thread (CRYPTO_DONE, arg);
	log_debug ("%s:%s: UI thread finished for %p",
	SRCNAME, __func__, arg);
	}
	else if (mail->isDraftEncrypt ())
	{
	mail->setCryptState (Mail::NeedsUpdateInMAPI);
	mail->updateCryptMAPI_m ();
	mail->setIsDraftEncrypt (false);
	mail->setCryptState (Mail::NoCryptMail);
	log_debug ("%s:%s: Synchronous draft encrypt finished for %p",
	SRCNAME, __func__, arg);
	gpgol_unlock (&dtor_lock);
	}
	else
	{
	mail->setCryptState (Mail::NeedsUpdateInMAPI);
	mail->updateCryptMAPI_m ();
	if (mail->cryptState () == Mail::WantsSendMIME)
	{
	// For sync crypto we need to switch this.
	mail->setCryptState (Mail::NeedsUpdateInOOM);
	}
	else
	{
	// A bug!
	log_debug ("%s:%s: Resetting crypter because of state mismatch. %p",
	SRCNAME, __func__, arg);
	crypter = nullptr;
	mail->resetCrypter ();
	}
	gpgol_unlock (&dtor_lock);
	}
	/* This works around a bug in pinentry that it might
	bring the wrong window to front. So after encryption /
	signing we bring outlook back to front.

	See GnuPG-Bug-Id: T3732
	*/
	do_in_ui_thread_async (BRING_TO_FRONT, nullptr, 250);
	log_debug ("%s:%s: crypto thread for %p finished",
	SRCNAME, __func__, arg);
	TRETURN 0;
	}

	bool
	Mail::isCryptoMail () const
	{
	TSTART;
	if (m_type == MSGTYPE_UNKNOWN \|\| m_type == MSGTYPE_GPGOL \|\|
	m_type == MSGTYPE_SMIME)
	{
	/* Not a message for us. */
	TRETURN false;
	}
	TRETURN true;
	}

	int
	Mail::decryptVerify_o ()
	{
	TSTART;

	if (!isCryptoMail ())
	{
	log_debug ("%s:%s: Decrypt Verify for non crypto mail: %p.",
	SRCNAME, __func__, m_mailitem);
	TRETURN 0;
	}
	m_decrypt_again = false;

	if (isSMIME_m ())
	{
	LPMESSAGE oom_message = get_oom_message (m_mailitem);
	if (oom_message)
	{
	char *old_class = mapi_get_old_message_class (oom_message);
	char *current_class = mapi_get_message_class (oom_message);
	if (current_class)
	{
	/* Store our own class for an eventual close */
	m_gpgol_class = current_class;
	xfree (current_class);
	current_class = nullptr;
	}
	if (old_class)
	{
	const char *new_class = old_class;
	/* Workaround that our own class might be the original */
	if (!strcmp (old_class, "IPM.Note.GpgOL.OpaqueEncrypted"))
	{
	new_class = "IPM.Note.SMIME";
	}
	else if (!strcmp (old_class, "IPM.Note.GpgOL.MultipartSigned"))
	{
	new_class = "IPM.Note.SMIME.MultipartSigned";
	}

	log_debug ("%s:%s:Restoring message class to %s in decverify.",
	SRCNAME, __func__, new_class);

	put_oom_string (m_mailitem, "MessageClass", new_class);
	xfree (old_class);
	setPassWrite (true);
	/* Sync to MAPI */
	invoke_oom_method (m_mailitem, "Save", nullptr);
	setPassWrite (false);
	}
	gpgol_release (oom_message);
	}
	}

	check_html_preferred ();

	auto cipherstream = get_attachment_stream_o (m_mailitem, m_moss_position);
	if (!cipherstream)
	{
	m_is_junk = is_junk_mail (m_mailitem);
	if (m_is_junk)
	{
	log_debug ("%s:%s: Detected: %p as junk",
	SRCNAME, __func__, m_mailitem);
	auto mngr = CategoryManager::instance ();
	m_store_id = mngr->addCategoryToMail (this,
	CategoryManager::getJunkMailCategory (),
	3 /* peach */);
	installFolderEventHandler_o ();
	TRETURN 0;
	}
	log_debug ("%s:%s: Failed to get cipherstream. Aborting handling.",
	SRCNAME, __func__);
	m_type = MSGTYPE_UNKNOWN;
	TRETURN 1;
	}

	setUUID_o ();
	m_processed = true;
	m_pass_write = false;

	/* Insert placeholder */
	m_orig_body = get_oom_string_s (m_mailitem, "Body");
	rtrim (m_orig_body);
	if (m_orig_body.empty ())
	{
	log_dbg ("Empty body.");
	/* We only need to check the HTML body if the plain body
	is not empty as outlook would convert the html to plain. */
	}
	else if (opt.prefer_html)
	{
	m_orig_body = get_oom_string_s (m_mailitem, "HTMLBody");
	}

	char *placeholder_buf = nullptr;
	if (m_type == MSGTYPE_GPGOL_WKS_CONFIRMATION)
	{
	gpgrt_asprintf (&placeholder_buf, opt.prefer_html ? decrypt_template_html :
	decrypt_template,
	"OpenPGP",
	_("Pubkey directory confirmation"),
	_("This is a confirmation request to publish your Pubkey in the "
	"directory for your domain.\n\n"
	"<p>If you did not request to publish your Pubkey in your providers "
	"directory, simply ignore this message.</p>\n"));
	}
	else if (m_type == MSGTYPE_GPGOL_MULTIPART_SIGNED &&
	!m_orig_body.empty ())
	{
	log_dbg ("Multipart signed inserting body in placeholder.");
	gpgrt_asprintf (&placeholder_buf, opt.prefer_html ? HTML_PREVIEW_PLACEHOLDER :
	TEXT_PREVIEW_PLACEHOLDER,
	isSMIME_m () ? "S/MIME" : "OpenPGP",
	_("message"),
	_("Please wait while the message is being verified..."),
	m_orig_body.c_str ());
	}
	else
	{
	gpgrt_asprintf (&placeholder_buf, opt.prefer_html ? decrypt_template_html :
	decrypt_template,
	isSMIME_m () ? "S/MIME" : "OpenPGP",
	_("message"),
	_("Please wait while the message is being decrypted / verified..."));
	}
	if (opt.prefer_html)
	{
	if (put_oom_string (m_mailitem, "HTMLBody", placeholder_buf))
	{
	log_error ("%s:%s: Failed to modify html body of item.",
	SRCNAME, __func__);
	}
	put_oom_int (m_mailitem, "BodyFormat", 2);
	}
	else
	{
	char *tmp = get_oom_string (m_mailitem, "Body");
	if (!tmp)
	{
	TRACEPOINT;
	TRETURN 1;
	}
	m_orig_body = tmp;
	xfree (tmp);
	if (put_oom_string (m_mailitem, "Body", placeholder_buf))
	{
	log_error ("%s:%s: Failed to modify body of item.",
	SRCNAME, __func__);
	}
	put_oom_int (m_mailitem, "BodyFormat", 1);
	}
	memdbg_alloc (placeholder_buf);
	xfree (placeholder_buf);

	if (m_type == MSGTYPE_GPGOL_WKS_CONFIRMATION)
	{
	if (m_header_info.boundary.empty())
	{
	parseHeaders_m ();
	}
	WKSHelper::instance ()->handle_confirmation_read (this, cipherstream);
	TRETURN 0;
	}

	m_parser = std::shared_ptr <ParseController> (new ParseController (cipherstream, m_type));
	m_parser->setSender(GpgME::UserID::addrSpecFromString(getSender_o ().c_str()));

	if (opt.autoimport)
	{
	/* Handle autocrypt header. As we want to have the import
	of the header in the same thread as the parser we leave it
	to the parser. */
	if (m_header_info.boundary.empty())
	{
	parseHeaders_m ();
	}
	if (m_header_info.acInfo.exists)
	{
	m_parser->setAutocryptInfo (m_header_info.acInfo);
	}
	}

	log_data ("%s:%s: Parser for \"%s\" is %p",
	SRCNAME, __func__, getSubject_o ().c_str(), m_parser.get());
	gpgol_release (cipherstream);

	/* Printing happens in two steps. First a Mail is loaded after the
	BeforePrint event, then it is loaded a second time when the actual print
	happens. We have to catch both. */
	if (!m_printing)
	{
	m_printing = checkIfMailMightBePrinting_o ();
	}
	else
	{
	/* Register us for printing. */
	s_entry_ids_printing.insert (get_oom_string_s (m_mailitem, "EntryID"));
	}

	if (!opt.sync_dec && !m_printing)
	{
	HANDLE parser_thread = CreateThread (NULL, 0, do_parsing, (LPVOID) this, 0,
	NULL);

	if (!parser_thread)
	{
	log_error ("%s:%s: Failed to create decrypt / verify thread.",
	SRCNAME, __func__);
	}
	CloseHandle (parser_thread);
	TRETURN 0;
	}
	else
	{
	/* Parse synchronously */
	do_parsing ((LPVOID) this);
	parsingDone_o ();
	TRETURN 0;
	}
	}

	int
	Mail::parseHeaders_m ()
	{
	/* Parse the headers first so that the handler for
	confirmation read can access them.
	Should be put in its own function.
	*/
	auto message = MAKE_SHARED (get_oom_message (m_mailitem));
	if (!message)
	{
	/* Hmmm */
	STRANGEPOINT;
	TRETURN -1;
	}
	if (!mapi_get_header_info ((LPMESSAGE)message.get(),
	m_header_info))
	{
	STRANGEPOINT;
	TRETURN -1;
	}
	TRETURN 0;
	}

	static void
	set_body (LPDISPATCH item, const std::string &plain, const std::string &html)
	{
	if (opt.prefer_html && !html.empty())
	{
	if (put_oom_string (item, "HTMLBody", html.c_str ()))
	{
	log_error ("%s:%s: Failed to modify html body of item.",
	SRCNAME, __func__);
	if (!plain.empty ())
	{
	if (put_oom_string (item, "Body", plain.c_str ()))
	{
	log_error ("%s:%s: Failed to put plaintext into body of item.",
	SRCNAME, __func__);
	}
	put_oom_int (item, "BodyFormat", 1);
	}
	else
	{
	if (put_oom_string (item, "HTMLBody", plain.c_str ()))
	{
	log_error ("%s:%s: Failed to put plaintext into html of item.",
	SRCNAME, __func__);
	}
	put_oom_int (item, "BodyFormat", 2);
	}
	}
	else
	{
	put_oom_int (item, "BodyFormat", 2);
	}
	}
	else if (!plain.empty ())
	{
	if (put_oom_string (item, "Body", plain.c_str ()))
	{
	log_error ("%s:%s: Failed to put plaintext into body of item.",
	SRCNAME, __func__);
	}
	put_oom_int (item, "BodyFormat", 1);
	}
	}

	void
	Mail::updateBody_o (bool is_preview)
	{
	TSTART;
	if (!m_parser)
	{
	TRACEPOINT;
	TRETURN;
	}

	const auto error = m_parser->get_formatted_error ();
	if (!error.empty())
	{
	set_body (m_mailitem, error, error);
	TRETURN;
	}
	if (m_verify_result.error())
	{
	log_error ("%s:%s: Verification failed. Restoring Body.",
	SRCNAME, __func__);
	set_body (m_mailitem, m_orig_body, m_orig_body);
	TRETURN;
	}
	// No need to carry body anymore
	if (!is_preview)
	{
	m_orig_body = std::string();
	}
	auto html = m_parser->get_html_body ();
	auto body = m_parser->get_body ();
	/** Outlook does not show newlines if \r\r\n is a newline. We replace
	these as apparently some other buggy MUA sends this. */
	find_and_replace (html, "\r\r\n", "\r\n");
	if (opt.prefer_html && (!html.empty() \|\| (is_preview && !m_block_html)))
	{
	if (!m_block_html)
	{
	auto charset = m_parser->get_html_charset();

	int codepage = 0;
	if (charset.empty())
	{
	codepage = get_oom_int (m_mailitem, "InternetCodepage");
	log_debug ("%s:%s: Did not find html charset."
	" Using internet Codepage %i.",
	SRCNAME, __func__, codepage);
	}

	char *converted = nullptr;

	if (!html.empty () \|\| !is_preview)
	{
	converted = ansi_charset_to_utf8 (charset.c_str(), html.c_str(),
	html.size(), codepage);

	}
	if (is_preview)
	{
	char *buf;
	if (!converted)
	{
	/* Convert plaintext to HTML for preview using outlook. */
	charset = m_parser->get_body_charset ();
	converted = ansi_charset_to_utf8 (charset.c_str(), body.c_str(),
	body.size(), codepage);
	put_oom_string (m_mailitem, "Body", converted);
	xfree (converted);
	converted = get_oom_string (m_mailitem, "HTMLBody");
	}
	if (converted)
	{
	gpgrt_asprintf (&buf, HTML_PREVIEW_PLACEHOLDER,
	isSMIME_m () ? "S/MIME" : "OpenPGP",
	_("message"),
	_("Please wait while the message is being verified..."),
	converted);
	memdbg_alloc (buf);
	xfree (converted);
	converted = buf;
	}
	}
	TRACEPOINT;
	int ret = put_oom_string (m_mailitem, "HTMLBody", converted ?
	converted : "");
	xfree (converted);
	put_oom_int (m_mailitem, "BodyFormat", 2);
	TRACEPOINT;
	if (ret)
	{
	log_error ("%s:%s: Failed to modify html body of item.",
	SRCNAME, __func__);
	}

	TRETURN;
	}
	else if (!body.empty())
	{
	/* We had a multipart/alternative mail but html should be
	blocked. So we prefer the text/plain part and warn
	once about this so that we hopefully don't get too
	many bugreports about this. */
	if (!opt.smime_html_warn_shown)
	{
	std::string caption = _("GpgOL") + std::string (": ") +
	std::string (_("HTML display disabled."));
	std::string buf = _("HTML content in unsigned S/MIME mails "
	"is insecure.");
	buf += "\n";
	buf += _("GpgOL will only show such mails as text.");

	buf += "\n\n";
	buf += _("This message is shown only once.");

	gpgol_message_box (getWindow (), buf.c_str(), caption.c_str(),
	MB_OK);
	opt.smime_html_warn_shown = true;
	write_options ();
	}
	}
	}

	if (body.empty () && m_block_html && !html.empty())
	{
	#if 0
	Sadly the following code still offers to load external references
	it might also be too dangerous if Outlook somehow autoloads the
	references as soon as the Body is put into HTML


	// Fallback to show HTML as plaintext if HTML display
	// is blocked.
	log_error ("%s:%s: No text body. Putting HTML into plaintext.",
	SRCNAME, __func__);

	char *converted = ansi_charset_to_utf8 (m_parser->get_html_charset().c_str(),
	html.c_str(), html.size());
	int ret = put_oom_string (m_mailitem, "HTMLBody", converted ? converted : "");
	xfree (converted);
	if (ret)
	{
	log_error ("%s:%s: Failed to modify html body of item.",
	SRCNAME, __func__);
	body = html;
	}
	else
	{
	char *plainBody = get_oom_string (m_mailitem, "Body");

	if (!plainBody)
	{
	log_error ("%s:%s: Failed to obtain converted plain body.",
	SRCNAME, __func__);
	body = html;
	}
	else
	{
	ret = put_oom_string (m_mailitem, "HTMLBody", plainBody);
	xfree (plainBody);
	if (ret)
	{
	log_error ("%s:%s: Failed to put plain into html body of item.",
	SRCNAME, __func__);
	body = html;
	}
	else
	{
	TRETURN;
	}
	}
	}
	#endif
	body = html;
	std::string caption = _("GpgOL") + std::string (": ") +
	std::string (_("HTML display disabled."));
	std::string buf = _("HTML content in unsigned S/MIME mails "
	"is insecure.");
	buf += "\n";
	buf += _("GpgOL will only show such mails as text.");

	buf += "\n\n";
	buf += _("Please ask the sender to sign the message or\n"
	"to send it with a plain text alternative.");

	gpgol_message_box (getWindow (), buf.c_str(), caption.c_str(),
	MB_OK);
	}

	find_and_replace (body, "\r\r\n", "\r\n");

	const auto plain_charset = m_parser->get_body_charset();

	int codepage = 0;
	if (plain_charset.empty())
	{
	codepage = get_oom_int (m_mailitem, "InternetCodepage");
	log_debug ("%s:%s: Did not find body charset. "
	"Using internet Codepage %i.",
	SRCNAME, __func__, codepage);
	}

	char *converted = ansi_charset_to_utf8 (plain_charset.c_str(),
	body.c_str(), body.size(),
	codepage);
	if (is_preview)
	{
	char *buf;
	gpgrt_asprintf (&buf, TEXT_PREVIEW_PLACEHOLDER,
	isSMIME_m () ? "S/MIME" : "OpenPGP",
	_("message"),
	_("Please wait while the message is being verified..."),
	converted);
	memdbg_alloc (buf);
	xfree (converted);
	converted = buf;
	}
	TRACEPOINT;
	int ret = put_oom_string (m_mailitem, "Body", converted ? converted : "");
	put_oom_int (m_mailitem, "BodyFormat", 1);
	TRACEPOINT;
	xfree (converted);
	if (ret)
	{
	log_error ("%s:%s: Failed to modify body of item.",
	SRCNAME, __func__);
	}
	TRETURN;
	}

	void
	Mail::updateHeaders_o ()
	{
	TSTART;
	if (!m_parser)
	{
	STRANGEPOINT;
	TRETURN;
	}

	const auto subject = m_parser->get_protected_header ("Subject");
	if (!subject.empty ())
	{
	put_oom_string (m_mailitem, "Subject", subject.c_str ());
	}

	const auto to = m_parser->get_protected_header ("To");
	if (!to.empty())
	{
	put_oom_string (m_mailitem, "To", to.c_str ());
	}

	const auto cc = m_parser->get_protected_header ("Cc");
	if (!cc.empty())
	{
	put_oom_string (m_mailitem, "CC", cc.c_str ());
	}

	/* TODO: What about Date ? */

	const auto reply_to = m_parser->get_protected_header ("Reply-To");
	const auto followup_to = m_parser->get_protected_header ("Followup-To");
	if (!reply_to.empty () \|\| !followup_to.empty())
	{
	auto recipients = MAKE_SHARED (get_oom_object (m_mailitem, "ReplyRecipents"));
	if (recipients)
	{
	if (!reply_to.empty ())
	{
	invoke_oom_method_with_string (recipients.get (), "Add",
	reply_to.c_str ());
	}
	if (!followup_to.empty ())
	{
	invoke_oom_method_with_string (recipients.get (), "Add",
	followup_to.c_str ());
	}
	}
	}

	const auto from = m_parser->get_protected_header ("From");
	if (!from.empty ())
	{
	LPDISPATCH sender = get_oom_object (m_mailitem, "Sender");
	if (!sender)
	{
	log_debug ("%s:%s: Sender not found. From not set.", SRCNAME, __func__);
	TRETURN;
	}

	/* Declare that the address is SMTP */
	put_oom_int (sender, "AddressEntryUserType", 30);
	const auto mail_start = from.find (" <");
	if (mail_start == std::string::npos)
	{
	put_oom_string (sender, "Address", from.c_str ());
	put_oom_string (sender, "Name", "");
	}
	else
	{
	put_oom_string (sender, "Address",
	GpgME::UserID::addrSpecFromString (from.c_str ()).c_str ());
	put_oom_string (sender, "Name", from.substr (0,
	mail_start).c_str ());
	}
	gpgol_release (sender);
	}
	}

	static int parsed_count;

	void
	Mail::parsingDone_o (bool is_preview)
	{
	TSTART;
	TRACEPOINT;
	log_oom ("Mail %p Parsing done for parser num %i: %p",
	this, parsed_count++, m_parser.get());
	if (!m_parser)
	{
	/* This should not happen but it happens when outlook
	sends multiple ItemLoad events for the same Mail
	Object. In that case it could happen that one
	parser was already done while a second is now
	returning for the wrong mail (as it's looked up
	by uuid.)

	We have a check in get_uuid that the uuid was
	not in the map before (and the parser is replaced).
	So this really really should not happen. We
	handle it anyway as we crash otherwise.

	It should not happen because the parser is only
	created in decrypt_verify which is called in the
	read event. And even in there we check if the parser
	was set.
	*/
	log_error ("%s:%s: No parser obj. For mail: %p",
	SRCNAME, __func__, this);
	TRETURN;
	}
	/* Store the results. */
	m_decrypt_result = m_parser->decrypt_result ();
	if (is_preview)
	{
	log_dbg ("Parser is not completely done. In Preview mode.");
	}
	else
	{
	m_verify_result = m_parser->verify_result ();
	}
	/* Handle protected headers */
	updateHeaders_o ();


	m_crypto_flags = 0;
	if (!m_decrypt_result.isNull())
	{
	m_crypto_flags \|= 1;
	}
	if (m_verify_result.numSignatures())
	{
	m_crypto_flags \|= 2;
	}

	TRACEPOINT;
	updateSigstate ();
	m_needs_wipe = !m_is_send_again;

	TRACEPOINT;
	/* Set categories according to the result. */
	updateCategories_o ();

	TRACEPOINT;
	m_block_html = m_parser->shouldBlockHtml ();

	if (m_block_html)
	{
	// Just to be careful.
	setBlockStatus_m ();
	}

	TRACEPOINT;
	/* Update the body */
	updateBody_o (is_preview);
	TRACEPOINT;

	/* When printing we have already shown the warning. So we
	should not show it again but silently remove any attachments
	that are not hidden before our add_attachments. This
	also fixes an issue that when printing sometimes the
	child mails which are created for preview and print already
	have the decrypted attachments. */
	checkAttachments_o (isPrint ());

	/* Update attachments */
	if (add_attachments_o (m_parser->get_attachments()))
	{
	log_error ("%s:%s: Failed to update attachments.",
	SRCNAME, __func__);
	}

	if (m_is_send_again)
	{
	log_debug ("%s:%s: I think that this is the send again of a crypto mail.",
	SRCNAME, __func__);

	/* We no longer want to be treated like a crypto mail. */
	m_type = MSGTYPE_UNKNOWN;
	LPMESSAGE msg = get_oom_base_message (m_mailitem);
	if (!msg)
	{
	TRACEPOINT;
	}
	else
	{
	set_gpgol_draft_info_flags (msg, m_crypto_flags);
	gpgol_release (msg);
	}
	removeOurAttachments_o ();
	}

	installFolderEventHandler_o ();

	if (!is_preview)
	{
	log_debug ("%s:%s: Delayed invalidate to update sigstate.",
	SRCNAME, __func__);
	CloseHandle(CreateThread (NULL, 0, delayed_invalidate_ui, (LPVOID) 300, 0,
	NULL));
	}
	TRACEPOINT;
	TRETURN;
	}

	int
	Mail::encryptSignStart_o ()
	{
	TSTART;
	if (m_crypt_state != NeedsActualCrypt)
	{
	log_debug ("%s:%s: invalid state %i",
	SRCNAME, __func__, m_crypt_state);
	TRETURN -1;
	}
	int flags = 0;
	if (!needs_crypto_m ())
	{
	TRETURN 0;
	}
	LPMESSAGE message = get_oom_base_message (m_mailitem);
	if (!message)
	{
	log_error ("%s:%s: Failed to get base message.",
	SRCNAME, __func__);
	TRETURN -1;
	}
	flags = get_gpgol_draft_info_flags (message);
	gpgol_release (message);

	const auto window = get_active_hwnd ();

	if (m_is_gsuite)
	{
	auto att_table = mapi_create_attach_table (message, 0);
	int n_att_usable = count_usable_attachments (att_table);
	mapi_release_attach_table (att_table);
	/* Check for attachments if we have some abort. */

	if (n_att_usable)
	{
	wchar_t *w_title = utf8_to_wchar (_(
	"GpgOL: Oops, G Suite Sync account detected"));
	wchar_t *msg = utf8_to_wchar (
	_("G Suite Sync breaks outgoing crypto mails "
	"with attachments.\nUsing crypto and attachments "
	"with G Suite Sync is not supported.\n\n"
	"See: https://dev.gnupg.org/T3545 for details."));
	MessageBoxW (window,
	msg,
	w_title,
	MB_ICONINFORMATION\|MB_OK);
	xfree (msg);
	xfree (w_title);
	TRETURN -1;
	}
	}

	m_do_inline = m_is_draft_encrypt ? false :
	m_is_gsuite ? true : opt.inline_pgp;

	GpgME::Protocol proto = opt.enable_smime ? GpgME::UnknownProtocol: GpgME::OpenPGP;

	m_crypter = std::shared_ptr <CryptController> (new CryptController (this, flags & 1,
	flags & 2,
	proto));

	// Careful from here on we have to check every
	// error condition with window enabling again.
	disableWindow_o ();
	if (m_crypter->collect_data ())
	{
	log_error ("%s:%s: Crypter for mail %p failed to collect data.",
	SRCNAME, __func__, this);
	enableWindow ();
	TRETURN -1;
	}

	if (!m_async_crypt_disabled)
	{
	CloseHandle(CreateThread (NULL, 0, do_crypt,
	(LPVOID) this, 0,
	NULL));
	}
	else
	{
	log_debug ("%s:%s: Starting sync crypt",
	SRCNAME, __func__);
	do_crypt (this);
	}
	TRETURN 0;
	}

	int
	Mail::needs_crypto_m () const
	{
	TSTART;
	LPMESSAGE message = get_oom_message (m_mailitem);
	int ret;
	if (!message)
	{
	log_error ("%s:%s: Failed to get message.",
	SRCNAME, __func__);
	TRETURN false;
	}
	ret = get_gpgol_draft_info_flags (message);
	gpgol_release(message);
	TRETURN ret;
	}

	int
	Mail::wipe_o (bool force)
	{
	TSTART;
	if (!m_needs_wipe && !force)
	{
	TRETURN 0;
	}
	log_debug ("%s:%s: Removing plaintext from mailitem: %p.",
	SRCNAME, __func__, m_mailitem);
	if (put_oom_string (m_mailitem, "HTMLBody",
	""))
	{
	if (put_oom_string (m_mailitem, "Body",
	""))
	{
	log_debug ("%s:%s: Failed to wipe mailitem: %p.",
	SRCNAME, __func__, m_mailitem);
	TRETURN -1;
	}
	TRETURN -1;
	}
	else
	{
	put_oom_string (m_mailitem, "Body", "");
	}
	m_needs_wipe = false;
	TRETURN 0;
	}

	int
	Mail::updateOOMData_o (bool for_encryption)
	{
	TSTART;
	char *buf = nullptr;
	log_debug ("%s:%s", SRCNAME, __func__);

	for_encryption \|= !isCryptoMail();

	if (for_encryption)
	{
	/* Update the body format. */
	m_is_html_alternative = get_oom_int (m_mailitem, "BodyFormat") > 1;

	/* Store the body. It was not obvious for me (aheinecke) how
	to access this through MAPI. */
	if (m_is_html_alternative)
	{
	log_debug ("%s:%s: Is html alternative mail.", SRCNAME, __func__);
	xfree (m_cached_html_body);
	m_cached_html_body = get_oom_string (m_mailitem, "HTMLBody");
	}
	xfree (m_cached_plain_body);
	m_cached_plain_body = get_oom_string (m_mailitem, "Body");

	if (!m_recipients_set)
	{
	m_cached_recipients = getRecipients_o ();
	}
	else
	{
	log_dbg ("Not updating cached recipients because recipients were "
	"set explicitly.");
	}
	}
	else
	{
	/* This is the case where we are reading a mail and not composing.
	When composing we need to use the SendUsingAccount because if
	you send from the folder of userA but change the from to userB
	outlook will keep the SenderEmailAddress of UserA. This is all
	so horrible. */
	buf = get_sender_SenderEMailAddress (m_mailitem);

	if (!buf)
	{
	/* Try the sender Object */
	buf = get_sender_Sender (m_mailitem);
	}

	/* We also want to cache sent representing email address so that
	we can use it for verification information. */
	char *buf2 = get_sender_SentRepresentingAddress (m_mailitem);

	if (buf2)
	{
	m_sent_on_behalf = buf2;
	xfree (buf2);
	}
	}

	if (!buf)
	{
	buf = get_sender_SendUsingAccount (m_mailitem, &m_is_gsuite);
	}
	if (!isCryptoMail ())
	{
	/* Try the sender Object and handle the case that someone
	changed the identity but not the account. */
	char *buf2 = get_sender_Sender (m_mailitem);
	char *tmp = buf;
	if (buf && buf2)
	{
	if (buf == '/' && buf2 != '/' && *buf2)
	{
	log_dbg ("Send account could not be resolved. Using sender.");
	buf = buf2;
	xfree (tmp);
	}
	else if (buf && buf != '/' && buf2 && buf2 != '/')
	{
	log_dbg ("SendUsingAccount: '%s' Sender: '%s'",
	anonstr (buf), anonstr (buf2));
	auto key = KeyCache::instance()->getSigningKey (buf2, GpgME::OpenPGP);
	if (!key.isNull())
	{
	log_dbg ("Found OpenPGP Key for %s using that identity",
	anonstr (buf2));
	buf = buf2;
	xfree (tmp);
	}
	else if (opt.enable_smime)
	{
	key = KeyCache::instance()->getSigningKey (buf2, GpgME::CMS);
	log_dbg ("Found S/MIME Key for %s using that identity",
	anonstr (buf2));
	buf = buf2;
	xfree (tmp);
	}
	}
	}
	else if (!buf)
	{
	buf = buf2;
	}
	else if (buf2 && buf != buf2)
	{
	log_dbg ("Keeping SendUsingAccount %s",
	anonstr (buf));
	xfree (buf2);
	}
	}
	if (!buf)
	{
	/* We don't have s sender object or SendUsingAccount,
	well, in that case fall back to the current user. */
	buf = get_sender_CurrentUser (m_mailitem);
	}
	if (!buf)
	{
	log_debug ("%s:%s: All fallbacks failed.",
	SRCNAME, __func__);
	TRETURN -1;
	}
	m_sender = buf;

	if (for_encryption)
	{
	bool sender_is_recipient = false;
	for (const auto &recp: m_cached_recipients)
	{
	if (recp.mbox () == m_sender)
	{
	sender_is_recipient = true;
	log_debug ("%s:%s: Sender already recipient.",
	SRCNAME, __func__);
	break;
	}
	}
	if (!sender_is_recipient)
	{
	m_cached_recipients.push_back (Recipient (buf,
	Recipient::olOriginator));
	}
	}

	xfree (buf);
	TRETURN 0;
	}

	std::string
	Mail::getSender_o ()
	{
	TSTART;
	if (m_sender.empty())
	updateOOMData_o ();
	TRETURN m_sender;
	}

	std::string
	Mail::getSender () const
	{
	TSTART;
	TRETURN m_sender;
	}

	int
	Mail::closeAllMails_o ()
	{
	TSTART;
	int err = 0;

	/* Detach Folder sinks */
	for (auto fit = s_folder_events_map.begin(); fit != s_folder_events_map.end(); ++fit)
	{
	detach_FolderEvents_sink (fit->second);
	gpgol_release (fit->second);
	}
	s_folder_events_map.clear();


	std::map<LPDISPATCH, Mail *>::iterator it;
	TRACEPOINT;
	gpgol_lock (&mail_map_lock);
	std::map<LPDISPATCH, Mail *> mail_map_copy = s_mail_map;
	gpgol_unlock (&mail_map_lock);
	for (it = mail_map_copy.begin(); it != mail_map_copy.end(); ++it)
	{
	/* XXX For non racy code the is_valid_ptr check should not
	be necessary but we crashed sometimes closing a destroyed
	mail. */
	if (!isValidPtr (it->second))
	{
	log_debug ("%s:%s: Already deleted mail for %p",
	SRCNAME, __func__, it->first);
	continue;
	}

	if (!it->second->isCryptoMail ())
	{
	continue;
	}
	bool close_failed = false;
	if (closeInspector_o (it->second))
	{
	log_error ("%s:%s: Failed to close mail inspector: %p ",
	SRCNAME, __func__, it->first);
	close_failed = true;
	}

	if (isValidPtr (it->second))
	{
	log_debug ("%s:%s: Inspector closed for %p closing object.",
	SRCNAME, __func__, it->first);
	if (it->second->close ())
	{
	log_error ("%s:%s: Failed to close mail itself: %p ",
	SRCNAME, __func__, it->first);
	close_failed = true;
	}
	}
	else
	{
	log_debug ("%s:%s: Mail gone after inspector close.",
	SRCNAME, __func__);
	close_failed = false;
	}
	/* Beware: The close code removes our Plaintext from the
	Outlook Object Model and temporary MAPI. If there
	is an error we might put Plaintext into permanent
	storage and leak it to the server. So we have
	an extra safeguard below. The revert is likely
	to fail if close and closeInspector fails but
	to guard against a bug in our close code we
	try it anyway as revert will also try to remove
	the plaintext from memory and restore the original
	message. */
	if (close_failed)
	{
	if (isValidPtr (it->second) && it->second->revert_o ())
	{
	err++;
	}
	}
	}
	TRETURN err;
	}
	int
	Mail::revertAllMails_o ()
	{
	TSTART;
	int err = 0;
	std::map<LPDISPATCH, Mail *>::iterator it;
	gpgol_lock (&mail_map_lock);
	auto mail_map_copy = s_mail_map;
	gpgol_unlock (&mail_map_lock);
	for (it = mail_map_copy.begin(); it != mail_map_copy.end(); ++it)
	{
	if (it->second->revert_o ())
	{
	log_error ("Failed to revert mail: %p ", it->first);
	err++;
	continue;
	}

	it->second->setNeedsSave (true);
	if (!invoke_oom_method (it->first, "Save", NULL))
	{
	log_error ("Failed to save reverted mail: %p ", it->second);
	err++;
	continue;
	}
	}
	TRETURN err;
	}

	int
	Mail::wipeAllMails_o ()
	{
	TSTART;
	int err = 0;
	std::map<LPDISPATCH, Mail *>::iterator it;
	gpgol_lock (&mail_map_lock);
	auto mail_map_copy = s_mail_map;
	gpgol_unlock (&mail_map_lock);
	for (it = mail_map_copy.begin(); it != mail_map_copy.end(); ++it)
	{
	if (it->second->wipe_o ())
	{
	log_error ("Failed to wipe mail: %p ", it->first);
	err++;
	}
	}
	TRETURN err;
	}

	int
	Mail::revert_o ()
	{
	TSTART;
	int err = 0;
	if (!m_processed)
	{
	TRETURN 0;
	}

	m_disable_att_remove_warning = true;

	err = gpgol_mailitem_revert (m_mailitem);
	if (err == -1)
	{
	log_error ("%s:%s: Message revert failed falling back to wipe.",
	SRCNAME, __func__);
	TRETURN wipe_o ();
	}
	/* We need to reprocess the mail next time around. */
	m_processed = false;
	m_needs_wipe = false;
	m_disable_att_remove_warning = false;
	TRETURN 0;
	}

	bool
	Mail::isSMIME () const
	{
	if (!m_is_smime_checked)
	{
	log_dbg ("WARNING: SMIME check before isSMIME_m was called.");
	return false;
	}
	return m_is_smime;
	}

	bool
	Mail::isSMIME_m ()
	{
	TSTART;
	msgtype_t msgtype;
	LPMESSAGE message;

	if (m_is_smime_checked)
	{
	TRETURN m_is_smime;
	}

	message = get_oom_message (m_mailitem);

	if (!message)
	{
	log_error ("%s:%s: No message?",
	SRCNAME, __func__);
	TRETURN false;
	}

	msgtype = mapi_get_message_type (message);
	m_is_smime = msgtype == MSGTYPE_GPGOL_OPAQUE_ENCRYPTED \|\|
	msgtype == MSGTYPE_GPGOL_OPAQUE_SIGNED \|\|
	msgtype == MSGTYPE_SMIME;

	/* Check if it is an smime mail. Multipart signed can
	also be true. */
	if (!m_is_smime && msgtype == MSGTYPE_GPGOL_MULTIPART_SIGNED)
	{
	char *proto;
	char *ct = mapi_get_message_content_type (message, &proto, NULL);
	if (ct && proto)
	{
	m_is_smime = (!strcmp (proto, "application/pkcs7-signature") \|\|
	!strcmp (proto, "application/x-pkcs7-signature"));
	}
	else
	{
	log_error ("%s:%s: No protocol in multipart / signed mail.",
	SRCNAME, __func__);
	}
	xfree (proto);
	xfree (ct);
	}
	gpgol_release (message);
	m_is_smime_checked = true;

	log_debug ("%s:%s: Detected %s mail",
	SRCNAME, __func__,
	m_is_smime ? "S/MIME" : "not S/MIME");

	TRETURN m_is_smime;
	}

	static std::string
	get_string_o (LPDISPATCH item, const char *str)
	{
	TSTART;
	char *buf = get_oom_string (item, str);
	if (!buf)
	{
	TRETURN std::string();
	}
	std::string ret = buf;
	xfree (buf);
	TRETURN ret;
	}

	std::string
	Mail::getSubject_o () const
	{
	TSTART;
	TRETURN get_string_o (m_mailitem, "Subject");
	}

	std::string
	Mail::getBody_o () const
	{
	TSTART;
	TRETURN get_string_o (m_mailitem, "Body");
	}

	std::vector<Recipient>
	Mail::getRecipients_o () const
	{
	TSTART;
	LPDISPATCH recipients = get_oom_object (m_mailitem, "Recipients");
	if (!recipients)
	{
	TRACEPOINT;
	std::vector<std::string>();
	}
	bool err = false;
	auto ret = get_oom_recipients (recipients, &err);
	gpgol_release (recipients);

	if (err)
	{
	log_debug ("%s:%s: Failed to resolve recipients at this time.",
	SRCNAME, __func__);

	}

	TRETURN ret;
	}

	int
	Mail::closeInspector_o (Mail *mail)
	{
	TSTART;
	LPDISPATCH inspector = get_oom_object (mail->item(), "GetInspector");
	HRESULT hr;
	DISPID dispid;
	if (!inspector)
	{
	log_debug ("%s:%s: No inspector.",
	SRCNAME, __func__);
	TRETURN -1;
	}

	dispid = lookup_oom_dispid (inspector, "Close");
	if (dispid != DISPID_UNKNOWN)
	{
	VARIANT aVariant[1];
	DISPPARAMS dispparams;

	dispparams.rgvarg = aVariant;
	dispparams.rgvarg[0].vt = VT_INT;
	dispparams.rgvarg[0].intVal = 1;
	dispparams.cArgs = 1;
	dispparams.cNamedArgs = 0;

	hr = inspector->Invoke (dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT,
	DISPATCH_METHOD, &dispparams,
	NULL, NULL, NULL);
	if (hr != S_OK)
	{
	log_debug ("%s:%s: Failed to close inspector: %#lx",
	SRCNAME, __func__, hr);
	gpgol_release (inspector);
	TRETURN -1;
	}
	}
	gpgol_release (inspector);
	TRETURN 0;
	}


	int
	Mail::close (bool restoreSMIMEClass)
	{
	TSTART;
	wm_after_move_data_t *move_data = nullptr;
	VARIANT aVariant[1];
	DISPPARAMS dispparams;

	dispparams.rgvarg = aVariant;
	dispparams.rgvarg[0].vt = VT_INT;
	dispparams.rgvarg[0].intVal = 1;
	dispparams.cArgs = 1;
	dispparams.cNamedArgs = 0;

	/* Remove the mail from the print mail set. So that categories
	etc work again. */
	const auto ourID = get_oom_string_s (m_mailitem, "EntryID");
	if (!ourID.empty ())
	{
	const auto it = s_entry_ids_printing.find (ourID);
	if (it != s_entry_ids_printing.end ())
	{
	log_dbg ("Found %s in printing map. Removing it",
	ourID.c_str ());
	s_entry_ids_printing.erase (it);
	}
	}

	if (isSMIME_m ())
	{
	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");
	LPMESSAGE mapi_msg = get_oom_message (m_mailitem);

	if (!mapi_msg)
	{
	log_error ("%s:%s:Failed to obtain mapi message for %p on close.",
	SRCNAME, __func__, m_mailitem);
	}
	if (m_gpgol_class.empty())
	{
	log_debug ("%s:%s: GpgOL Class empty for S/MIME Mail.",
	SRCNAME, __func__);
	}

	/* This is strangely important. Because Outlook apparently treats
	* S/MIME Mails differently we need to change our message class
	* here again so that discard changes works properly. */
	if (mapi_msg && !m_gpgol_class.empty ())
	{
	char *current = mapi_get_message_class (mapi_msg);

	if (current && strcmp (current, m_gpgol_class.c_str ()))
	{
	log_debug ("%s:%s:Setting message class to %s on close.",
	SRCNAME, __func__, m_gpgol_class.c_str ());
	mapi_set_mesage_class (mapi_msg, m_gpgol_class.c_str ());

	if (restoreSMIMEClass)
	{
	/* After the close we need to change the message class back
	again so as to not break compatibility with other clients. */
	move_data = (wm_after_move_data_t *)
	xmalloc (sizeof (wm_after_move_data_t));

	size_t entryIDLen = 0;
	char *entryID = nullptr;
	entryID = mapi_get_binary_prop (mapi_msg, PR_ENTRYID,
	&entryIDLen);

	LPDISPATCH folder = get_oom_object (m_mailitem, "Parent");
	if (folder)
	{
	char *name = get_object_name ((LPUNKNOWN) folder);
	if (!name \|\| strcmp (name, "MAPIFolder"))
	{
	log_error ("%s:%s: Failed to obtain folder on close object is %s",
	SRCNAME, __func__, name ? name : "(null)");
	}
	else
	{
	xfree (name);
	move_data->target_folder = (LPMAPIFOLDER) get_oom_iunknown (
	folder, "MAPIOBJECT");
	if (!move_data->target_folder)
	{
	log_error ("%s:%s: Failed to obtain target folder.",
	SRCNAME, __func__);
	xfree (entryID);
	xfree (current);
	xfree (move_data);
	move_data = nullptr;
	}
	else
	{
	memdbg_addRef (move_data->target_folder);
	}
	}
	}

	move_data->entry_id = entryID;
	move_data->entry_id_len = entryIDLen;
	move_data->old_class = current;
	}
	}
	}

	if (attachments)
	{
	int count = get_oom_int (attachments, "Count");
	gpgol_release (attachments);
	if (count)
	{
	/* On exchange Outlook sometimes detects that an S/MIME mail
	* is an S/MIME Mail. When this mail is then modified by
	* us and the mail should be moved or closed Outlook will try
	* to save it. This fails and the user gets an error.
	*
	* So we save here, which should not be dangerous as we do not
	* put plaintext in mapi.
	*
	* Still better only do it if it is really
	* necessary as the changed message class can hurt.
	*
	* Tests show no plaintext leaks. The save saves the
	* message class and in that way outlook no longer
	* thinks the mails are S/MIME mails and we can
	* use our own handling. See T4525
	*/
	removeCategories_o ();
	HRESULT hr = 0;
	if (mapi_msg)
	{
	log_debug ("%s:%s: MAPI Save for: %p",
	SRCNAME, __func__, m_mailitem);
	mapi_msg->SaveChanges (KEEP_OPEN_READWRITE);
	}
	if (!mapi_msg \|\| hr)
	{
	log_error ("%s:%s: Failed to save mapi for %p hr=%#lx",
	SRCNAME, __func__, this, hr);
	}
	/* In case the mail is still visible in a different window */
	updateCategories_o ();
	}
	}

	gpgol_release (mapi_msg);
	}

	log_oom ("%s:%s: Invoking close for: %p",
	SRCNAME, __func__, m_mailitem);
	setCloseTriggered (true);
	int rc = invoke_oom_method_with_parms (m_mailitem, "Close",
	nullptr, &dispparams);

	if (move_data)
	{
	log_debug ("%s:%s:Restoring message class to %s after close.",
	SRCNAME, __func__, move_data->old_class);
	do_in_ui_thread_async (AFTER_MOVE, move_data, 0);
	}
	setCloseTriggered (false);

	if (!rc)
	{
	/* Saveguard against oom writes when our data is in OOM. This
	* can happen when the mail was opened in a new window. But
	* also shown in the preview.
	* We get a close event and discard changes but the data is
	* still in oom because it is still visible in the opened
	* window.
	*
	* In that case we may not write! Otherwise the plaintext
	* might be leaked back to the server if the folder is synced.
	* */
	char *body = get_oom_string (m_mailitem, "Body");
	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");

	if (body && strlen (body))
	{
	log_debug ("%s:%s: Close successful. But body found. "
	"Mail still open.",
	SRCNAME, __func__);
	}
	else if (count_visible_attachments (attachments))
	{
	log_debug ("%s:%s: Close successful. But attachments found. "
	"Mail still open.",
	SRCNAME, __func__);
	}
	else
	{
	setPassWrite (true);
	log_debug ("%s:%s: Close successful. Next write may pass.",
	SRCNAME, __func__);
	}
	gpgol_release (attachments);
	xfree (body);
	}
	log_oom ("%s:%s: returned from close",
	SRCNAME, __func__);
	TRETURN rc;
	}

	void
	Mail::setCloseTriggered (bool value)
	{
	TSTART;
	m_close_triggered = value;
	TRETURN;
	}

	bool
	Mail::getCloseTriggered () const
	{
	TSTART;
	TRETURN m_close_triggered;
	}

	static const UserID
	get_uid_for_sender (const Key &k, const char *sender)
	{
	TSTART;
	UserID ret;

	if (!sender)
	{
	TRETURN ret;
	}

	if (!k.numUserIDs())
	{
	log_debug ("%s:%s: Key without uids",
	SRCNAME, __func__);
	TRETURN ret;
	}

	for (const auto uid: k.userIDs())
	{
	if (!uid.email() \|\| !*(uid.email()))
	{
	/* This happens for S/MIME a lot */
	log_debug ("%s:%s: skipping uid without email.",
	SRCNAME, __func__);
	continue;
	}
	auto normalized_uid = uid.addrSpec();
	auto normalized_sender = UserID::addrSpecFromString(sender);

	if (normalized_sender.empty() \|\| normalized_uid.empty())
	{
	log_error ("%s:%s: normalizing '%s' or '%s' failed.",
	SRCNAME, __func__, anonstr (uid.email()),
	anonstr (sender));
	continue;
	}
	if (normalized_sender == normalized_uid)
	{
	ret = uid;
	}
	}
	TRETURN ret;
	}

	void
	Mail::updateSigstate ()
	{
	TSTART;
	std::string sender = getSender ();

	if (sender.empty())
	{
	log_error ("%s:%s:%i", SRCNAME, __func__, __LINE__);
	TRETURN;
	}

	if (m_verify_result.isNull())
	{
	log_debug ("%s:%s: No verify result.",
	SRCNAME, __func__);
	TRETURN;
	}

	if (m_verify_result.error())
	{
	log_debug ("%s:%s: verify error.",
	SRCNAME, __func__);
	TRETURN;
	}

	for (const auto sig: m_verify_result.signatures())
	{
	m_is_signed = true;
	const auto key = KeyCache::instance ()->getByFpr (sig.fingerprint(),
	true);
	m_uid = get_uid_for_sender (key, sender.c_str());

	if (m_uid.isNull() && !m_sent_on_behalf.empty ())
	{
	m_uid = get_uid_for_sender (key, m_sent_on_behalf.c_str ());
	if (!m_uid.isNull())
	{
	log_debug ("%s:%s: Using sent on behalf '%s' instead of '%s'",
	SRCNAME, __func__, anonstr (m_sent_on_behalf.c_str()),
	anonstr (sender.c_str ()));
	}
	}
	/* Sigsum valid or green is somehow not set in this case. */
	if (!sig.status() && m_uid.origin() == GpgME::Key::OriginWKD &&
	(sig.validity() == Signature::Validity::Unknown \|\|
	sig.validity() == Signature::Validity::Marginal))
	{
	// WKD is a shortcut to Level 2 trust.
	log_debug ("%s:%s: Unknown or marginal from WKD -> Level 2",
	SRCNAME, __func__);
	}
	else if (m_uid.isNull() \|\| (sig.validity() != Signature::Validity::Marginal &&
	sig.validity() != Signature::Validity::Full &&
	sig.validity() != Signature::Validity::Ultimate))
	{
	/* For our category we only care about trusted sigs. And
	the UID needs to match.*/
	continue;
	}
	else if (sig.validity() == Signature::Validity::Marginal)
	{
	const auto tofu = m_uid.tofuInfo();
	if (!tofu.isNull() &&
	(tofu.validity() != TofuInfo::Validity::BasicHistory &&
	tofu.validity() != TofuInfo::Validity::LargeHistory))
	{
	/* Marginal is only good enough without tofu.
	Otherwise we wait for basic trust. */
	log_debug ("%s:%s: Discarding marginal signature."
	"With too little history.",
	SRCNAME, __func__);
	continue;
	}
	}
	log_debug ("%s:%s: Classified sender as verified uid validity: %i origin: %i",
	SRCNAME, __func__, m_uid.validity(), m_uid.origin());
	m_sig = sig;
	m_is_valid = true;
	TRETURN;
	}

	log_debug ("%s:%s: No signature with enough trust. Using first",
	SRCNAME, __func__);
	m_sig = m_verify_result.signature(0);
	TRETURN;
	}

	bool
	Mail::isValidSig () const
	{
	TSTART;
	TRETURN m_is_valid;
	}

	void
	Mail::removeCategories_o ()
	{
	TSTART;
	if (!m_store_id.empty () && !m_verify_category.empty ())
	{
	log_oom ("%s:%s: Unreffing verify category",
	SRCNAME, __func__);
	CategoryManager::instance ()->removeCategory (this,
	m_verify_category);
	}
	if (!m_store_id.empty () && !m_decrypt_result.isNull())
	{
	log_oom ("%s:%s: Unreffing dec category",
	SRCNAME, __func__);
	CategoryManager::instance ()->removeCategory (this,
	CategoryManager::getEncMailCategory ());
	}
	if (m_is_junk)
	{
	log_oom ("%s:%s: Unreffing junk category",
	SRCNAME, __func__);
	CategoryManager::instance ()->removeCategory (this,
	CategoryManager::getJunkMailCategory ());
	}
	TRETURN;
	}

	/* Now for some tasty hack: Outlook sometimes does
	not show the new categories properly but instead
	does some weird scrollbar thing. This can be
	avoided by resizing the message a bit. But somehow
	this only needs to be done once.

	Weird isn't it? But as this workaround worked let's
	do it programatically. Fun. Wan't some tomato sauce
	with this hack? */
	static void
	resize_active_window ()
	{
	TSTART;
	HWND wnd = get_active_hwnd ();
	static std::vector<HWND> resized_windows;
	if(std::find(resized_windows.begin(), resized_windows.end(), wnd) != resized_windows.end()) {
	/* We only need to do this once per window. XXX But sometimes we also
	need to do this once per view of the explorer. So for now this might
	break but we reduce the flicker. A better solution would be to find
	the current view and track that. */
	TRETURN;
	}

	if (!wnd)
	{
	TRACEPOINT;
	TRETURN;
	}
	RECT oldpos;
	if (!GetWindowRect (wnd, &oldpos))
	{
	TRACEPOINT;
	TRETURN;
	}

	if (!SetWindowPos (wnd, nullptr,
	(int)oldpos.left,
	(int)oldpos.top,
	/* Anything smaller then 19 was ignored when the window was
	* maximized on Windows 10 at least with a 1980*1024
	* resolution. So I assume it's at least 1 percent.
	* This is all hackish and ugly but should work for 90%...
	* hopefully.
	*/
	(int)oldpos.right - oldpos.left - 20,
	(int)oldpos.bottom - oldpos.top, 0))
	{
	TRACEPOINT;
	TRETURN;
	}

	if (!SetWindowPos (wnd, nullptr,
	(int)oldpos.left,
	(int)oldpos.top,
	(int)oldpos.right - oldpos.left,
	(int)oldpos.bottom - oldpos.top, 0))
	{
	TRACEPOINT;
	TRETURN;
	}
	resized_windows.push_back(wnd);
	TRETURN;
	}

	#if 0
	static std::string
	pretty_id (const char *keyId)
	{
	/* Three spaces, four quads and a NULL */
	char buf[20];
	buf[19] = '\0';
	if (!keyId)
	{
	return std::string ("null");
	}
	size_t len = strlen (keyId);
	if (!len)
	{
	return std::string ("empty");
	}
	if (len < 16)
	{
	return std::string (_("Invalid Key"));
	}
	const char *p = keyId + (len - 16);
	int j = 0;
	for (size_t i = 0; i < 16; i++)
	{
	if (i && i % 4 == 0)
	{
	buf[j++] = ' ';
	}
	buf[j++] = *(p + i);
	}
	return std::string (buf);
	}
	#endif

	void
	Mail::updateCategories_o ()
	{
	TSTART;

	if (m_printing)
	{
	log_debug ("%s:%s: Not updating categories as we are printing.",
	SRCNAME, __func__);
	return;
	}

	auto mngr = CategoryManager::instance ();
	if (isValidSig ())
	{
	char *buf;
	/* Resolve to the primary fingerprint */
	#if 0
	const auto sigKey = KeyCache::instance ()->getByFpr (m_sig.fingerprint (),
	true);
	const char *sigFpr;
	if (sigKey.isNull())
	{
	sigFpr = m_sig.fingerprint ();
	}
	else
	{
	sigFpr = sigKey.primaryFingerprint ();
	}
	#endif
	/* If m_uid addrSpec would not return a result we would never
	* have gotten the UID. */
	int lvl = get_signature_level ();

	/* TRANSLATORS: The first placeholder is for tranlsation of "Level".
	The second one is for the level number. The third is for the
	translation of "trust in" and the last one is for the mail
	address used for verification. The result is used as the
	text on the green bar for signed mails. e.g.:
	"GpgOL: Level 3 trust in 'john.doe@example.org'" */
	gpgrt_asprintf (&buf, "GpgOL: %s %i %s '%s'", _("Level"), lvl,
	_("trust in"),
	m_uid.addrSpec ().c_str ());
	memdbg_alloc (buf);

	int color = 0;
	if (lvl == 2)
	{
	color = 7; /* Olive */
	}
	if (lvl == 3)
	{
	color = 5; /* Green */
	}
	if (lvl == 4)
	{
	color = 20; /* Dark Green */
	}
	m_store_id = mngr->addCategoryToMail (this, buf, color);
	m_verify_category = buf;
	xfree (buf);
	}
	else
	{
	remove_category (m_mailitem, "GpgOL: ", false);
	}

	if (!m_decrypt_result.isNull())
	{
	const auto id = mngr->addCategoryToMail (this,
	CategoryManager::getEncMailCategory (),
	8 /* Blue */);
	if (m_store_id.empty())
	{
	m_store_id = id;
	}
	if (m_store_id != id)
	{
	log_error ("%s:%s unexpected store mismatch "
	"between '%s' and dec cat '%s'",
	SRCNAME, __func__, m_store_id.c_str(), id.c_str());
	}
	}
	else
	{
	/* As a small safeguard against fakes we remove our
	categories */
	remove_category (m_mailitem,
	CategoryManager::getEncMailCategory ().c_str (),
	true);
	}

	resize_active_window();

	TRETURN;
	}

	bool
	Mail::isSigned () const
	{
	TSTART;
	TRETURN m_verify_result.numSignatures() > 0;
	}

	bool
	Mail::isEncrypted () const
	{
	TSTART;
	TRETURN !m_decrypt_result.isNull();
	}

	int
	Mail::setUUID_o ()
	{
	TSTART;
	char *uuid;
	if (!m_uuid.empty())
	{
	/* This codepath is reached by decrypt again after a
	close with discard changes. The close discarded
	the uuid on the OOM object so we have to set
	it again. */
	log_debug ("%s:%s: Resetting uuid for %p to %s",
	SRCNAME, __func__, this,
	m_uuid.c_str());
	uuid = get_unique_id (m_mailitem, 1, m_uuid.c_str());
	}
	else
	{
	uuid = get_unique_id (m_mailitem, 1, nullptr);
	log_debug ("%s:%s: uuid for %p set to %s",
	SRCNAME, __func__, this, uuid);
	}

	if (!uuid)
	{
	log_debug ("%s:%s: Failed to get/set uuid for %p",
	SRCNAME, __func__, m_mailitem);
	TRETURN -1;
	}
	if (m_uuid.empty())
	{
	m_uuid = uuid;
	Mail *other = getMailForUUID (uuid);
	if (other)
	{
	/* According to documentation this should not
	happen as this means that multiple ItemLoad
	events occured for the same mailobject without
	unload / destruction of the mail.

	But it happens. If you invalidate the UI
	in the selection change event Outlook loads a
	new mailobject for the mail. Might happen in
	other surprising cases. We replace in that
	case as experiments have shown that the last
	mailobject is the one that is visible.

	Still troubling state so we log this as an error.
	*/
	log_error ("%s:%s: There is another mail for %p "
	"with uuid: %s replacing it.",
	SRCNAME, __func__, m_mailitem, uuid);
	delete other;
	}

	gpgol_lock (&uid_map_lock);
	s_uid_map.insert (std::pair<std::string, Mail *> (m_uuid, this));
	gpgol_unlock (&uid_map_lock);
	log_debug ("%s:%s: uuid for %p is now %s",
	SRCNAME, __func__, this,
	m_uuid.c_str());
	}
	xfree (uuid);
	TRETURN 0;
	}

	/* TRETURNs 2 if the userid is ultimately trusted.

	TRETURNs 1 if the userid is fully trusted but has
	a signature by a key for which we have a secret
	and which is ultimately trusted. (Direct trust)

	0 otherwise */
	static int
	level_4_check (const UserID &uid)
	{
	TSTART;
	if (uid.isNull())
	{
	TRETURN 0;
	}
	if (uid.validity () == UserID::Validity::Ultimate)
	{
	TRETURN 2;
	}
	if (uid.validity () == UserID::Validity::Full)
	{
	const auto ultimate_keys = KeyCache::instance()->getUltimateKeys ();
	for (const auto sig: uid.signatures ())
	{
	const char *sigID = sig.signerKeyID ();
	if (sig.isNull() \|\| !sigID)
	{
	/* should not happen */
	TRACEPOINT;
	continue;
	}
	/* Direct trust information is not available
	through gnupg so we cached the keys with ultimate
	trust during parsing and now see if we find a direct
	trust path.*/
	for (const auto secKey: ultimate_keys)
	{
	/* Check that the Key id of the key matches */
	const char *secKeyID = secKey.keyID ();
	if (!secKeyID \|\| strcmp (secKeyID, sigID))
	{
	continue;
	}
	/* Check that the userID of the signature is the ultimately
	trusted one. */
	const char *sig_uid_str = sig.signerUserID();
	if (!sig_uid_str)
	{
	/* should not happen */
	TRACEPOINT;
	continue;
	}
	for (const auto signer_uid: secKey.userIDs ())
	{
	if (signer_uid.validity() != UserID::Validity::Ultimate)
	{
	TRACEPOINT;
	continue;
	}
	const char *signer_uid_str = signer_uid.id ();
	if (!sig_uid_str)
	{
	/* should not happen */
	TRACEPOINT;
	continue;
	}
	if (!strcmp(sig_uid_str, signer_uid_str))
	{
	/* We have a match */
	log_debug ("%s:%s: classified %s as ultimate because "
	"it was signed by uid %s of key %s",
	SRCNAME, __func__, anonstr (signer_uid_str),
	anonstr (sig_uid_str),
	anonstr (secKeyID));
	TRETURN 1;
	}
	}
	}
	}
	}
	TRETURN 0;
	}

	std::string
	Mail::getCryptoSummary () const
	{
	TSTART;
	const int level = get_signature_level ();

	bool enc = isEncrypted ();
	if (level == 4 && enc)
	{
	TRETURN _("Security Level 4");
	}
	if (level == 4)
	{
	TRETURN _("Trust Level 4");
	}
	if (level == 3 && enc)
	{
	TRETURN _("Security Level 3");
	}
	if (level == 3)
	{
	TRETURN _("Trust Level 3");
	}
	if (level == 2 && enc)
	{
	TRETURN _("Security Level 2");
	}
	if (level == 2)
	{
	TRETURN _("Trust Level 2");
	}
	if (enc)
	{
	TRETURN _("Encrypted");
	}
	if (isSigned ())
	{
	/* Even if it is signed, if it is not validly
	signed it's still completly insecure as anyone
	could have signed this. So we avoid the label
	"signed" here as this word already implies some
	security. */
	TRETURN _("Insecure");
	}
	TRETURN _("Insecure");
	}

	std::string
	Mail::getCryptoOneLine () const
	{
	TSTART;
	bool sig = isSigned ();
	bool enc = isEncrypted ();
	if (sig \|\| enc)
	{
	if (sig && enc)
	{
	TRETURN _("Signed and encrypted message");
	}
	else if (sig)
	{
	TRETURN _("Signed message");
	}
	else if (enc)
	{
	TRETURN _("Encrypted message");
	}
	}
	TRETURN _("Insecure message");
	}

	std::string
	Mail::getCryptoDetails_o ()
	{
	TSTART;
	std::string message;

	/* No signature with keys but error */
	if (!isEncrypted () && !isSigned () && m_verify_result.error())
	{
	message = _("You cannot be sure who sent, "
	"modified and read the message in transit.");
	message += "\n\n";
	message += _("The message was signed but the verification failed with:");
	message += "\n";
	message += m_verify_result.error().asString();
	TRETURN message;
	}
	/* No crypo, what are we doing here? */
	if (!isEncrypted () && !isSigned ())
	{
	TRETURN _("You cannot be sure who sent, "
	"modified and read the message in transit.");
	}
	/* Handle encrypt only */
	if (isEncrypted () && !isSigned ())
	{
	if (in_de_vs_mode ())
	{
	if (m_sig.isDeVs())
	{
	message += _("The encryption was VS-NfD-compliant.");
	}
	else
	{
	message += _("The encryption was not VS-NfD-compliant.");
	}
	}
	message += "\n\n";
	message += _("You cannot be sure who sent the message because "
	"it is not signed.");
	TRETURN message;
	}

	bool keyFound = true;
	const auto sigKey = KeyCache::instance ()->getByFpr (m_sig.fingerprint (),
	true);
	bool isOpenPGP = sigKey.isNull() ? !isSMIME_m () :
	sigKey.protocol() == Protocol::OpenPGP;
	char *buf;
	bool hasConflict = false;
	int level = get_signature_level ();

	log_debug ("%s:%s: Formatting sig. Validity: %x Summary: %x Level: %i",
	SRCNAME, __func__, m_sig.validity(), m_sig.summary(),
	level);

	if (level == 4)
	{
	/* level 4 check for direct trust */
	int four_check = level_4_check (m_uid);

	if (four_check == 2 && sigKey.hasSecret ())
	{
	message = _("You signed this message.");
	}
	else if (four_check == 1)
	{
	message = _("The senders identity was certified by yourself.");
	}
	else if (four_check == 2)
	{
	message = _("The sender is allowed to certify identities for you.");
	}
	else
	{
	log_error ("%s:%s:%i BUG: Invalid sigstate.",
	SRCNAME, __func__, __LINE__);
	TRETURN message;
	}
	}
	else if (level == 3 && isOpenPGP)
	{
	/* Level three is only reachable through web of trust and no
	direct signature. */
	message = _("The senders identity was certified by several trusted people.");
	}
	else if (level == 3 && !isOpenPGP)
	{
	/* Level three is the only level for trusted S/MIME keys. */
	gpgrt_asprintf (&buf, _("The senders identity is certified by the trusted issuer:\n'%s'\n"),
	sigKey.issuerName());
	memdbg_alloc (buf);
	message = buf;
	xfree (buf);
	}
	else if (level == 2 && m_uid.origin () == GpgME::Key::OriginWKD)
	{
	message = _("The mail provider of the recipient served this key.");
	}
	else if (level == 2 && m_uid.tofuInfo ().isNull ())
	{
	/* Marginal trust through pgp only */
	message = _("Some trusted people "
	"have certified the senders identity.");
	}
	else if (level == 2)
	{
	unsigned long first_contact = std::max (m_uid.tofuInfo().signFirst(),
	m_uid.tofuInfo().encrFirst());
	char *time = format_date_from_gpgme (first_contact);
	/* i18n note signcount is always pulral because with signcount 1 we
	* would not be in this branch. */
	gpgrt_asprintf (&buf, _("The senders address is trusted, because "
	"you have established a communication history "
	"with this address starting on %s.\n"
	"You encrypted %i and verified %i messages since."),
	time, m_uid.tofuInfo().encrCount(),
	m_uid.tofuInfo().signCount ());
	memdbg_alloc (buf);
	xfree (time);
	message = buf;
	xfree (buf);
	}
	else if (level == 1)
	{
	/* This could be marginal trust through pgp, or tofu with little
	history. */
	if (m_uid.tofuInfo ().signCount() == 1)
	{
	message += _("The senders signature was verified for the first time.");
	}
	else if (m_uid.tofuInfo ().validity() == TofuInfo::Validity::LittleHistory)
	{
	unsigned long first_contact = std::max (m_uid.tofuInfo().signFirst(),
	m_uid.tofuInfo().encrFirst());
	char *time = format_date_from_gpgme (first_contact);
	gpgrt_asprintf (&buf, _("The senders address is not trustworthy yet because "
	"you only verified %i messages and encrypted %i messages to "
	"it since %s."),
	m_uid.tofuInfo().signCount (),
	m_uid.tofuInfo().encrCount (), time);
	memdbg_alloc (buf);
	xfree (time);
	message = buf;
	xfree (buf);
	}
	}
	else
	{
	/* Now we are in level 0, this could be a technical problem, no key
	or just unkown. */
	message = isEncrypted () ? _("But the sender address is not trustworthy because:") :
	_("The sender address is not trustworthy because:");
	message += "\n";
	keyFound = !(m_sig.summary() & Signature::Summary::KeyMissing);

	bool general_problem = true;
	/* First the general stuff. */
	if (m_sig.summary() & Signature::Summary::Red)
	{
	message += _("The signature is invalid: \n");
	if (m_sig.status().code() == GPG_ERR_BAD_SIGNATURE)
	{
	message += std::string("\n") + _("The signature does not match.");
	return message;
	}
	}
	else if (m_sig.summary() & Signature::Summary::SysError \|\|
	m_verify_result.numSignatures() < 1)
	{
	message += _("There was an error verifying the signature.\n");
	const auto err = m_sig.status ();
	if (err)
	{
	message += err.asString () + std::string ("\n");
	}
	}
	else if (m_sig.summary() & Signature::Summary::SigExpired)
	{
	message += _("The signature is expired.\n");
	}
	else
	{
	message += isOpenPGP ? _("The used key") : _("The used certificate");
	message += " ";
	general_problem = false;
	}

	/* Now the key problems */
	if ((m_sig.summary() & Signature::Summary::KeyMissing))
	{
	message += _("is not available.");
	}
	else if ((m_sig.summary() & Signature::Summary::KeyRevoked))
	{
	message += _("is revoked.");
	}
	else if ((m_sig.summary() & Signature::Summary::KeyExpired))
	{
	message += _("is expired.");
	}
	else if ((m_sig.summary() & Signature::Summary::BadPolicy))
	{
	message += _("is not meant for signing.");
	}
	else if ((m_sig.summary() & Signature::Summary::CrlMissing))
	{
	message += _("could not be checked for revocation.");
	}
	else if ((m_sig.summary() & Signature::Summary::CrlTooOld))
	{
	message += _("could not be checked for revocation.");
	}
	else if ((m_sig.summary() & Signature::Summary::TofuConflict) \|\|
	m_uid.tofuInfo().validity() == TofuInfo::Conflict)
	{
	message += _("is not the same as the key that was used "
	"for this address in the past.");
	hasConflict = true;
	}
	else if (m_uid.isNull())
	{
	gpgrt_asprintf (&buf, _("does not claim the address: \"%s\"."),
	getSender_o ().c_str());
	memdbg_alloc (buf);
	message += buf;
	xfree (buf);
	}
	else if (((m_sig.validity() & Signature::Validity::Undefined) \|\|
	(m_sig.validity() & Signature::Validity::Unknown) \|\|
	(m_sig.summary() == Signature::Summary::None) \|\|
	(m_sig.validity() == 0))&& !general_problem)
	{
	/* Bit of a catch all for weird results. */
	if (isOpenPGP)
	{
	message += _("is not certified by any trustworthy key.");
	}
	else
	{
	message += _("is not certified by a trustworthy Certificate Authority or the Certificate Authority is unknown.");
	}
	}
	else if (m_uid.isRevoked())
	{
	message += _("The sender marked this address as revoked.");
	}
	else if ((m_sig.validity() & Signature::Validity::Never))
	{
	message += _("is marked as not trustworthy.");
	}
	}
	message += "\n\n";
	if (in_de_vs_mode ())
	{
	if (isSigned ())
	{
	if (m_sig.isDeVs ())
	{
	message += _("The signature is VS-NfD-compliant.");
	}
	else
	{
	message += _("The signature is not VS-NfD-compliant.");
	}
	message += "\n";
	}
	if (isEncrypted ())
	{
	if (m_decrypt_result.isDeVs ())
	{
	message += _("The encryption is VS-NfD-compliant.");
	}
	else
	{
	message += _("The encryption is not VS-NfD-compliant.");
	}
	message += "\n\n";
	}
	else
	{
	message += "\n";
	}
	}
	if (hasConflict)
	{
	message += _("Click here to change the key used for this address.");
	}
	else if (keyFound)
	{
	message += isOpenPGP ? _("Click here for details about the key.") :
	_("Click here for details about the certificate.");
	}
	else
	{
	message += isOpenPGP ? _("Click here to search the key on the configured keyserver.") :
	_("Click here to search the certificate on the configured X509 keyserver.");
	}
	TRETURN message;
	}

	int
	Mail::get_signature_level () const
	{
	TSTART;
	if (!m_is_signed)
	{
	TRETURN 0;
	}

	if (m_uid.isNull ())
	{
	/* No m_uid matches our sender. */
	TRETURN 0;
	}

	if (m_is_valid && (m_uid.validity () == UserID::Validity::Ultimate \|\|
	(m_uid.validity () == UserID::Validity::Full &&
	level_4_check (m_uid))) && (!in_de_vs_mode () \|\| m_sig.isDeVs()))
	{
	TRETURN 4;
	}
	if (m_is_valid && m_uid.validity () == UserID::Validity::Full &&
	(!in_de_vs_mode () \|\| m_sig.isDeVs()))
	{
	TRETURN 3;
	}
	if (m_is_valid)
	{
	TRETURN 2;
	}
	if (m_sig.validity() == Signature::Validity::Marginal)
	{
	TRETURN 1;
	}
	if (m_sig.summary() & Signature::Summary::TofuConflict \|\|
	m_uid.tofuInfo().validity() == TofuInfo::Conflict)
	{
	TRETURN 0;
	}
	TRETURN 0;
	}

	int
	Mail::getCryptoIconID () const
	{
	TSTART;
	int level = get_signature_level ();
	int offset = isEncrypted () ? ENCRYPT_ICON_OFFSET : 0;
	TRETURN IDI_LEVEL_0 + level + offset;
	}

	const char*
	Mail::getSigFpr () const
	{
	TSTART;
	if (!m_is_signed \|\| m_sig.isNull())
	{
	TRETURN nullptr;
	}
	TRETURN m_sig.fingerprint();
	}

	/** Try to locate the keys for all recipients */
	void
	Mail::locateKeys_o ()
	{
	TSTART;
	if (m_locate_in_progress)
	{
	/** XXX
	The strangest thing seems to happen here:
	In get_recipients the lookup for "AddressEntry" on
	an unresolved address might cause network traffic.

	So Outlook somehow "detaches" this call and keeps
	processing window messages while the call is running.

	So our do_delayed_locate might trigger a second locate.
	If we access the OOM in this call while we access the
	same object in the blocked "detached" call we crash.
	(T3931)

	After the window message is handled outlook retunrs
	in the original lookup.

	A better fix here might be a non recursive lock
	of the OOM. But I expect that if we lock the handling
	of the Windowmessage we might deadlock.
	*/
	log_debug ("%s:%s: Locate for %p already in progress.",
	SRCNAME, __func__, this);
	TRETURN;
	}
	m_locate_in_progress = true;

	Addressbook::check_o (this);

	if (opt.autoresolve)
	{
	// First update oom data to have recipients and sender updated.
	updateOOMData_o ();
	KeyCache::instance()->startLocateSecret (getSender_o ().c_str (), this);
	KeyCache::instance()->startLocate (getSender_o ().c_str (), this);
	KeyCache::instance()->startLocate (getCachedRecipientAddresses (), this);
	}

	autosecureCheck ();

	m_locate_in_progress = false;
	TRETURN;
	}

	bool
	Mail::isHTMLAlternative () const
	{
	TSTART;
	TRETURN m_is_html_alternative;
	}

	char *
	Mail::takeCachedHTMLBody ()
	{
	TSTART;
	char *ret = m_cached_html_body;
	m_cached_html_body = nullptr;
	TRETURN ret;
	}

	char *
	Mail::takeCachedPlainBody ()
	{
	TSTART;
	char *ret = m_cached_plain_body;
	m_cached_plain_body = nullptr;
	TRETURN ret;
	}

	int
	Mail::getCryptoFlags () const
	{
	TSTART;
	TRETURN m_crypto_flags;
	}

	void
	Mail::setNeedsEncrypt (bool value)
	{
	TSTART;
	m_needs_encrypt = value;
	TRETURN;
	}

	bool
	Mail::getNeedsEncrypt () const
	{
	TSTART;
	TRETURN m_needs_encrypt;
	}

	std::vector<Recipient>
	Mail::getCachedRecipients ()
	{
	TSTART;
	TRETURN m_cached_recipients;
	}

	void
	Mail::setRecipients (const std::vector<Recipient> &recps)
	{
	TSTART;
	m_recipients_set = !recps.empty ();
	m_cached_recipients = recps;
	TRETURN;
	}


	std::vector<std::string>
	Mail::getCachedRecipientAddresses ()
	{
	TSTART;
	std::vector <std::string> ret;
	for (const auto &recp: m_cached_recipients)
	{
	ret.push_back (recp.mbox());
	}
	return ret;
	}

	void
	Mail::appendToInlineBody (const std::string &data)
	{
	TSTART;
	m_inline_body += data;
	TRETURN;
	}

	int
	Mail::inlineBodyToBody_o ()
	{
	TSTART;
	if (!m_crypter)
	{
	log_error ("%s:%s: No crypter.",
	SRCNAME, __func__);
	TRETURN -1;
	}

	const auto body = m_crypter->get_inline_data ();
	if (body.empty())
	{
	TRETURN 0;
	}

	/* For inline we always work with UTF-8 */
	put_oom_int (m_mailitem, "InternetCodepage", 65001);

	int ret = put_oom_string (m_mailitem, "Body",
	body.c_str ());
	TRETURN ret;
	}

	void
	Mail::updateCryptMAPI_m ()
	{
	TSTART;
	log_debug ("%s:%s: Update crypt mapi",
	SRCNAME, __func__);
	if (m_crypt_state != NeedsUpdateInMAPI)
	{
	log_debug ("%s:%s: invalid state %i",
	SRCNAME, __func__, m_crypt_state);
	TRETURN;
	}
	if (!m_crypter)
	{
	if (!m_mime_data.empty())
	{
	log_debug ("%s:%s: Have override mime data creating dummy crypter",
	SRCNAME, __func__);
	m_crypter = std::shared_ptr <CryptController> (new CryptController (this, false,
	false,
	GpgME::UnknownProtocol));
	}
	else
	{
	log_error ("%s:%s: No crypter.",
	SRCNAME, __func__);
	m_crypt_state = NoCryptMail;
	TRETURN;
	}
	}

	if (m_crypter->update_mail_mapi ())
	{
	log_error ("%s:%s: Failed to update MAPI after crypt",
	SRCNAME, __func__);
	m_crypt_state = NoCryptMail;
	}
	else
	{
	m_crypt_state = WantsSendMIME;
	}

	/** If sync we need the crypter in update_crypt_oom */
	if (!isAsyncCryptDisabled ())
	{
	// We don't need the crypter anymore.
	resetCrypter ();
	}
	TRETURN;
	}

	/** Checks in OOM if the body is either
	empty or contains the -----BEGIN tag.
	pair.first -> true if body starts with -----BEGIN
	pair.second -> true if body is empty. */
	static std::pair<bool, bool>
	has_crypt_or_empty_body_oom (Mail *mail)
	{
	TSTART;
	auto body = mail->getBody_o ();
	std::pair<bool, bool> ret;
	ret.first = false;
	ret.second = false;
	ltrim (body);
	if (body.size() > 10 && !strncmp (body.c_str(), "-----BEGIN", 10))
	{
	ret.first = true;
	TRETURN ret;
	}
	if (!body.size())
	{
	ret.second = true;
	}
	else
	{
	log_data ("%s:%s: Body found in %p : \"%s\"",
	SRCNAME, __func__, mail, body.c_str ());
	}
	TRETURN ret;
	}

	void
	Mail::updateCryptOOM_o ()
	{
	TSTART;
	log_debug ("%s:%s: Update crypt oom for %p",
	SRCNAME, __func__, this);
	if (m_crypt_state != NeedsUpdateInOOM)
	{
	log_debug ("%s:%s: invalid state %i",
	SRCNAME, __func__, m_crypt_state);
	resetCrypter ();
	resetRecipients ();
	TRETURN;
	}

	if (getDoPGPInline ())
	{
	if (inlineBodyToBody_o ())
	{
	log_error ("%s:%s: Inline body to body failed %p.",
	SRCNAME, __func__, this);
	gpgol_bug (get_active_hwnd(), ERR_INLINE_BODY_TO_BODY);
	m_crypt_state = NoCryptMail;
	TRETURN;
	}
	}

	if (m_crypter->get_protocol () == GpgME::CMS && m_crypter->is_encrypter ())
	{
	/* We put the PIDNameContentType headers here for exchange
	because this is the only way we found to inject the
	smime-type. */
	if (put_pa_string (m_mailitem,
	PR_PIDNameContentType_DASL,
	"application/pkcs7-mime;smime-type=\"enveloped-data\";name=smime.p7m"))
	{
	log_debug ("%s:%s: Failed to put PIDNameContentType for %p.",
	SRCNAME, __func__, this);
	}
	}

	if (get_oom_int (m_mailitem, "BodyFormat") == 3)
	{
	log_dbg ("Changing body format from rich text to HTML to "
	"prevent winmail.dat");
	put_oom_int (m_mailitem, "BodyFormat", 2);
	}

	/** When doing async update_crypt_mapi follows and needs
	the crypter. */
	if (isAsyncCryptDisabled ())
	{
	resetCrypter ();
	resetRecipients ();
	}

	const auto pair = has_crypt_or_empty_body_oom (this);
	if (pair.first)
	{
	log_debug ("%s:%s: Looks like inline body. You can pass %p.",
	SRCNAME, __func__, this);
	m_crypt_state = WantsSendInline;
	TRETURN;
	}

	/* Draft encryption we do not want to wipe the oom but we have
	to modify it to trigger the wirte / second after write. */
	if (m_is_draft_encrypt)
	{
	char *subject = get_oom_string (m_mailitem, "Subject");
	put_oom_string (m_mailitem, "Subject", subject ? subject : "");
	xfree (subject);
	}

	// We are in MIME land. Wipe the body.
	if (!m_is_draft_encrypt && wipe_o (true))
	{
	log_debug ("%s:%s: Cancel send for %p.",
	SRCNAME, __func__, this);
	wchar_t *title = utf8_to_wchar (_("GpgOL: Encryption not possible!"));
	wchar_t *msg = utf8_to_wchar (_(
	"Outlook returned an error when trying to send the encrypted mail.\n\n"
	"Please restart Outlook and try again.\n\n"
	"If it still fails consider using an encrypted attachment or\n"
	"switching to PGP/Inline in GpgOL's options."));
	MessageBoxW (get_active_hwnd(), msg, title,
	MB_ICONERROR \| MB_OK);
	xfree (msg);
	xfree (title);
	m_crypt_state = NoCryptMail;
	TRETURN;
	}
	m_crypt_state = NeedsSecondAfterWrite;
	TRETURN;
	}

	void
	Mail::enableWindow ()
	{
	TSTART;
	if (!m_window)
	{
	log_error ("%s:%s:enable window which was not disabled",
	SRCNAME, __func__);
	}
	log_debug ("%s:%s: enable window %p",
	SRCNAME, __func__, m_window);

	EnableWindow (m_window, TRUE);
	TRETURN;
	}

	void
	Mail::disableWindow_o ()
	{
	TSTART;
	m_window = get_active_hwnd ();
	log_debug ("%s:%s: disable window %p",
	SRCNAME, __func__, m_window);

	EnableWindow (m_window, FALSE);
	TRETURN;
	}

	bool
	Mail::isActiveInlineResponse_o ()
	{
	const auto subject = getSubject_o ();
	bool ret = false;
	LPDISPATCH app = GpgolAddin::get_instance ()->get_application ();
	if (!app)
	{
	TRACEPOINT;
	TRETURN false;
	}

	LPDISPATCH explorer = get_oom_object (app, "ActiveExplorer");

	if (!explorer)
	{
	TRACEPOINT;
	TRETURN false;
	}

	LPDISPATCH inlineResponse = get_oom_object (explorer, "ActiveInlineResponse");
	gpgol_release (explorer);

	if (!inlineResponse)
	{
	TRETURN false;
	}

	// We have inline response
	// Check if we are it. It's a bit naive but meh. Worst case
	// is that we think inline response too often and do sync
	// crypt where we could do async crypt.
	char * inlineSubject = get_oom_string (inlineResponse, "Subject");
	gpgol_release (inlineResponse);

	if (inlineResponse && !subject.empty() && !strcmp (subject.c_str (), inlineSubject))
	{
	log_debug ("%s:%s: Detected inline response for '%p'",
	SRCNAME, __func__, this);
	ret = true;
	}

	xfree (inlineSubject);
	TRETURN ret;
	}

	bool
	Mail::checkSyncCrypto_o ()
	{
	TSTART;
	/* Async sending is known to cause instabilities. So we keep
	a hidden option to disable it. */
	if (opt.sync_enc)
	{
	m_async_crypt_disabled = true;
	TRETURN m_async_crypt_disabled;
	}

	m_async_crypt_disabled = false;

	const auto subject = getSubject_o ();

	/* Check for an empty subject. Otherwise the question for it
	might be hidden behind our overlay. */
	if (subject.empty())
	{
	log_debug ("%s:%s: Detected empty subject. "
	"Disabling async crypt due to T4150.",
	SRCNAME, __func__);
	m_async_crypt_disabled = true;
	TRETURN m_async_crypt_disabled;
	}

	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");
	if (attachments)
	{
	/* This is horrible. But. For some kinds of attachments (we
	got reports about Office attachments the write in the
	send event triggered by our crypto done code fails with
	an exception. There does not appear to be a detectable
	pattern when this happens.
	As we can't be sure and do not know for which attachments
	this really happens we do not use async crypt for any
	mails with attachments. :-/
	Better be save (not crash) instead of nice (async).

	TODO: Figure this out.

	The log goes like this. We pass the send event. That triggers
	a write, which we pass. And then that fails. So it looks like
	moving to Outbox fails. Because we can save as much as we
	like before that.

	Using the IMessage::SubmitMessage MAPI interface works, but
	as it is unstable in our current implementation we do not
	want to use it.

	mailitem-events.cpp:Invoke: Passing send event for mime-encrypted message 12B7C6E0.
	application-events.cpp:Invoke: Unhandled Event: f002
	mailitem-events.cpp:Invoke: Write : 0ED4D058
	mailitem-events.cpp:Invoke: Passing write event.
	oomhelp.cpp:invoke_oom_method_with_parms_type: Method 'Send' invokation failed: 0x80020009
	oomhelp.cpp:dump_excepinfo: Exception:
	wCode: 0x1000
	wReserved: 0x0
	source: Microsoft Outlook
	desc: The operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook.
	help: null
	helpCtx: 0x0
	deferredFill: 00000000
	scode: 0x80040119
	*/

	int count = get_oom_int (attachments, "Count");
	gpgol_release (attachments);

	if (count)
	{
	m_async_crypt_disabled = true;
	log_debug ("%s:%s: Detected attachments. "
	"Disabling async crypt due to T4131.",
	SRCNAME, __func__);
	TRETURN m_async_crypt_disabled;
	}
	}

	if (isActiveInlineResponse_o ())
	{
	m_async_crypt_disabled = true;
	}

	TRETURN m_async_crypt_disabled;
	}

	// static
	Mail *
	Mail::getLastMail ()
	{
	TSTART;
	if (!s_last_mail \|\| !isValidPtr (s_last_mail))
	{
	s_last_mail = nullptr;
	}
	TRETURN s_last_mail;
	}

	// static
	void
	Mail::clearLastMail ()
	{
	TSTART;
	s_last_mail = nullptr;
	TRETURN;
	}

	// static
	void
	Mail::locateAllCryptoRecipients_o ()
	{
	TSTART;
	gpgol_lock (&mail_map_lock);
	std::map<LPDISPATCH, Mail *>::iterator it;
	auto mail_map_copy = s_mail_map;
	gpgol_unlock (&mail_map_lock);
	for (it = mail_map_copy.begin(); it != mail_map_copy.end(); ++it)
	{
	if (it->second->needs_crypto_m ())
	{
	it->second->locateKeys_o ();
	}
	}
	TRETURN;
	}

	int
	Mail::removeAllAttachments_o ()
	{
	TSTART;
	int ret = 0;
	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");
	if (!attachments)
	{
	TRACEPOINT;
	TRETURN 0;
	}
	int count = get_oom_int (attachments, "Count");
	LPDISPATCH to_delete[count];

	/* Populate the array so that we don't get in an index mess */
	for (int i = 1; i <= count; i++)
	{
	auto item_str = std::string("Item(") + std::to_string (i) + ")";
	to_delete[i-1] = get_oom_object (attachments, item_str.c_str());
	}
	gpgol_release (attachments);

	/* Now delete all attachments */
	for (int i = 0; i < count; i++)
	{
	LPDISPATCH attachment = to_delete[i];

	if (!attachment)
	{
	log_error ("%s:%s: No such attachment %i",
	SRCNAME, __func__, i);
	ret = -1;
	}

	/* Delete the attachments that are marked to delete */
	if (invoke_oom_method (attachment, "Delete", NULL))
	{
	log_error ("%s:%s: Deleting attachment %i",
	SRCNAME, __func__, i);
	ret = -1;
	}
	gpgol_release (attachment);
	}
	TRETURN ret;
	}

	int
	Mail::removeOurAttachments_o ()
	{
	TSTART;
	LPDISPATCH attachments = get_oom_object (m_mailitem, "Attachments");
	if (!attachments)
	{
	TRACEPOINT;
	TRETURN 0;
	}
	int count = get_oom_int (attachments, "Count");
	LPDISPATCH to_delete[count];
	int del_cnt = 0;
	for (int i = 1; i <= count; i++)
	{
	auto item_str = std::string("Item(") + std::to_string (i) + ")";
	LPDISPATCH attachment = get_oom_object (attachments, item_str.c_str());
	if (!attachment)
	{
	TRACEPOINT;
	continue;
	}

	attachtype_t att_type;
	if (get_pa_int (attachment, GPGOL_ATTACHTYPE_DASL, (int*) &att_type))
	{
	/* Not our attachment. */
	gpgol_release (attachment);
	continue;
	}

	if (att_type == ATTACHTYPE_PGPBODY \|\| att_type == ATTACHTYPE_MOSS \|\|
	att_type == ATTACHTYPE_MOSSTEMPL)
	{
	/* One of ours to delete. */
	to_delete[del_cnt++] = attachment;
	/* Dont' release yet */
	continue;
	}
	gpgol_release (attachment);
	}
	gpgol_release (attachments);

	int ret = 0;

	for (int i = 0; i < del_cnt; i++)
	{
	LPDISPATCH attachment = to_delete[i];

	/* Delete the attachments that are marked to delete */
	if (invoke_oom_method (attachment, "Delete", NULL))
	{
	log_error ("%s:%s: Error: deleting attachment %i",
	SRCNAME, __func__, i);
	ret = -1;
	}
	gpgol_release (attachment);
	}
	TRETURN ret;
	}

	/* We are very verbose because if we fail it might mean
	that we have leaked plaintext -> critical. */
	bool
	Mail::hasCryptedOrEmptyBody_o ()
	{
	TSTART;
	const auto pair = has_crypt_or_empty_body_oom (this);

	if (pair.first /* encrypted marker */)
	{
	log_debug ("%s:%s: Crypt Marker detected in OOM body. Return true %p.",
	SRCNAME, __func__, this);
	TRETURN true;
	}

	if (!pair.second)
	{
	log_debug ("%s:%s: Unexpected content detected. Return false %p.",
	SRCNAME, __func__, this);
	TRETURN false;
	}

	// Pair second == true (is empty) can happen on OOM error.
	LPMESSAGE message = get_oom_base_message (m_mailitem);
	if (!message && pair.second)
	{
	if (message)
	{
	gpgol_release (message);
	}
	TRETURN true;
	}

	size_t r_nbytes = 0;
	char *mapi_body = mapi_get_body (message, &r_nbytes);
	gpgol_release (message);

	if (!mapi_body \|\| !r_nbytes)
	{
	// Body or bytes are null. we are empty.
	xfree (mapi_body);
	log_debug ("%s:%s: MAPI error or empty message. Return true. %p.",
	SRCNAME, __func__, this);
	TRETURN true;
	}
	if (r_nbytes > 10 && !strncmp (mapi_body, "-----BEGIN", 10))
	{
	// Body is crypt.
	log_debug ("%s:%s: MAPI Crypt marker detected. Return true. %p.",
	SRCNAME, __func__, this);
	xfree (mapi_body);
	TRETURN true;
	}

	xfree (mapi_body);

	log_debug ("%s:%s: Found mapi body. Return false. %p.",
	SRCNAME, __func__, this);

	TRETURN false;
	}

	std::string
	Mail::getVerificationResultDump ()
	{
	TSTART;
	std::stringstream ss;
	ss << m_verify_result;
	TRETURN ss.str();
	}

	void
	Mail::setBlockStatus_m ()
	{
	TSTART;
	SPropValue prop;

	LPMESSAGE message = get_oom_base_message (m_mailitem);

	prop.ulPropTag = PR_BLOCK_STATUS;
	prop.Value.l = 1;
	HRESULT hr = message->SetProps (1, &prop, NULL);

	if (hr)
	{
	log_error ("%s:%s: can't set block value: hr=%#lx\n",
	SRCNAME, __func__, hr);
	}

	gpgol_release (message);
	TRETURN;
	}

	void
	Mail::setBlockHTML (bool value)
	{
	TSTART;
	m_block_html = value;
	TRETURN;
	}

	void
	Mail::incrementLocateCount ()
	{
	TSTART;
	m_locate_count++;
	TRETURN;
	}

	void
	Mail::decrementLocateCount ()
	{
	TSTART;
	m_locate_count--;

	if (m_locate_count < 0)
	{
	log_error ("%s:%s: locate count mismatch.",
	SRCNAME, __func__);
	m_locate_count = 0;
	}
	if (!m_locate_count)
	{
	autosecureCheck ();
	}
	TRETURN;
	}

	void
	Mail::autosecureCheck ()
	{
	TSTART;
	if (!opt.autosecure \|\| !opt.autoresolve \|\| m_manual_crypto_opts \|\|
	m_locate_count)
	{
	TRETURN;
	}
	bool ret = KeyCache::instance()->isMailResolvable (this);

	log_debug ("%s:%s: status %i",
	SRCNAME, __func__, ret);

	/* As we are safe to call at any time, because we need
	* to be triggered by the locator threads finishing we
	* need to actually set the draft info flags in
	* the ui thread. */
	do_in_ui_thread_async (ret ? DO_AUTO_SECURE : DONT_AUTO_SECURE,
	this);
	TRETURN;
	}

	void
	Mail::setDoAutosecure_m (bool value)
	{
	TSTART;
	TRACEPOINT;
	LPMESSAGE msg = get_oom_base_message (m_mailitem);

	if (!msg)
	{
	TRACEPOINT;
	TRETURN;
	}
	/* We need to set a uuid so that autosecure can
	be disabled manually */
	setUUID_o ();

	int old_flags = get_gpgol_draft_info_flags (msg);
	if (old_flags && m_first_autosecure_check &&
	/* Someone with always sign and autosecure active
	* will want to get autoencryption. */
	!(old_flags == 2 && opt.sign_default))
	{
	/* They were set explicily before us. This can be
	* because they were a draft (which is bad) or
	* because they are a reply/forward to a crypto mail
	* or because there are conflicting settings. */
	log_debug ("%s:%s: Mail %p had already flags set.",
	SRCNAME, __func__, m_mailitem);
	m_first_autosecure_check = false;
	m_manual_crypto_opts = true;
	gpgol_release (msg);
	TRETURN;
	}
	m_first_autosecure_check = false;
	set_gpgol_draft_info_flags (msg, value ? 3 : opt.sign_default ? 2 : 0);
	gpgol_release (msg);
	gpgoladdin_invalidate_ui();
	TRETURN;
	}

	bool
	Mail::decryptedSuccessfully () const
	{
	return m_decrypt_result.isNull() \|\| !m_decrypt_result.error();
	}

	void
	Mail::installFolderEventHandler_o()
	{
	TSTART;
	TRACEPOINT;
	LPDISPATCH folder = get_oom_object (m_mailitem, "Parent");

	if (!folder)
	{
	TRACEPOINT;
	TRETURN;
	}

	char *objName = get_object_name (folder);
	if (!objName \|\| strcmp (objName, "MAPIFolder"))
	{
	log_debug ("%s:%s: Mail %p parent is not a mapi folder.",
	SRCNAME, __func__, m_mailitem);
	xfree (objName);
	gpgol_release (folder);
	TRETURN;
	}
	xfree (objName);

	char *path = get_oom_string (folder, "FullFolderPath");
	if (!path)
	{
	TRACEPOINT;
	path = get_oom_string (folder, "FolderPath");
	}
	if (!path)
	{
	log_error ("%s:%s: Mail %p parent has no folder path.",
	SRCNAME, __func__, m_mailitem);
	gpgol_release (folder);
	TRETURN;
	}

	std::string strPath (path);
	xfree (path);

	if (s_folder_events_map.find (strPath) == s_folder_events_map.end())
	{
	log_debug ("%s:%s: Install folder events watcher for %s.",
	SRCNAME, __func__, anonstr (strPath.c_str()));
	const auto sink = install_FolderEvents_sink (folder);
	s_folder_events_map.insert (std::make_pair (strPath, sink));
	}

	/* Folder already registered */
	gpgol_release (folder);
	TRETURN;
	}

	void
	Mail::refCurrentItem()
	{
	TSTART;
	if (m_currentItemRef)
	{
	log_debug ("%s:%s: Current item multi ref. Bug?",
	SRCNAME, __func__);
	TRETURN;
	}
	/* This prevents a crash in Outlook 2013 when sending a mail as it
	* would unload too early.
	*
	* As it didn't crash when the mail was opened in Outlook Spy this
	* mimics that the mail is inspected somewhere else. */
	m_currentItemRef = get_oom_object (m_mailitem, "GetInspector.CurrentItem");
	TRETURN;
	}

	void
	Mail::releaseCurrentItem()
	{
	TSTART;
	if (!m_currentItemRef)
	{
	TRETURN;
	}
	log_oom ("%s:%s: releasing CurrentItem ref %p",
	SRCNAME, __func__, m_currentItemRef);
	LPDISPATCH tmp = m_currentItemRef;
	m_currentItemRef = nullptr;
	/* This can cause our destruction */
	gpgol_release (tmp);
	TRETURN;
	}

	void
	Mail::decryptPermanently_o()
	{
	TSTART;
	if (!m_needs_wipe)
	{
	log_debug ("%s:%s: Mail does not yet need wipe. Called to early?",
	SRCNAME, __func__);
	TRETURN;
	}

	if (!m_decrypt_result.isNull() && m_decrypt_result.error())
	{
	log_debug ("%s:%s: Decrypt result had error. Can't decrypt permanently.",
	SRCNAME, __func__);
	TRETURN;
	}

	/* Remove the existing categories */
	removeCategories_o ();

	/* Drop our state variables */
	m_decrypt_result = GpgME::DecryptionResult();
	m_verify_result = GpgME::VerificationResult();
	m_needs_wipe = false;
	m_processed = false;
	m_is_smime = false;
	m_type = MSGTYPE_UNKNOWN;

	/* Remove our own attachments */
	removeOurAttachments_o ();

	updateSigstate();

	auto msg = MAKE_SHARED (get_oom_base_message (m_mailitem));
	if (!msg)
	{
	STRANGEPOINT;
	TRETURN;
	}
	mapi_delete_gpgol_tags ((LPMESSAGE)msg.get());
	+ /* The content type is wrong now. We remove it.*/
	+ mapi_set_content_type ((LPMESSAGE)msg.get(), nullptr);

	mapi_set_mesage_class ((LPMESSAGE)msg.get(), "IPM.Note");

	if (invoke_oom_method (m_mailitem, "Save", NULL))
	{
	log_error ("Failed to save decrypted mail: %p ", m_mailitem);
	}

	log_debug ("%s:%s: Delayed invalidate to update sigstate after perm dec.",
	SRCNAME, __func__);
	CloseHandle(CreateThread (NULL, 0, delayed_invalidate_ui, (LPVOID) 300, 0,
	NULL));
	TRETURN;
	}

	int
	Mail::prepareCrypto_o ()
	{
	TSTART;

	int olFlags = get_oom_crypto_flags (m_mailitem);
	log_dbg ("Outlook internal crypto flags are: %i",
	olFlags);
	if (olFlags)
	{
	std::string question = _("Should GpgOL override Outlook and continue "
	"to process the message?");
	std::string vs_warning;
	if (in_de_vs_mode ())
	{
	vs_warning = _("Note: For VS-NfD communication you have to select Yes.") + std::string ("\n\n");
	}
	std::string msg = _("A crypto operation was selected both using "
	"Outlooks internal crypto and with GpgOL / GnuPG.") +
	std::string("\n\n") + vs_warning + question;
	int yesno = gpgol_message_box (get_active_hwnd (), msg.c_str (),
	_("Conflicting crypto settings"),
	MB_YESNO);
	if (yesno == IDYES)
	{
	log_dbg ("Overriding Outlook internal crypto.");
	}
	else
	{
	log_dbg ("Aborting send.");
	TRETURN -1;
	}
	}
	put_pa_int (m_mailitem, PR_SECURITY_FLAGS_DASL, 0);

	// Check inline response state to fill out asynccryptdisabled.
	checkSyncCrypto_o ();

	if (!isAsyncCryptDisabled())
	{
	/* Obtain a reference of the current item. This prevents
	* an early unload which would crash Outlook 2013
	*
	* As it didn't crash when the mail was opened in Outlook Spy this
	* mimics that the mail is inspected somewhere else. */
	refCurrentItem ();
	}

	// First contact with a mail to encrypt update
	// state and oom data.
	updateOOMData_o (true);

	setCryptState (Mail::NeedsFirstAfterWrite);

	TRETURN 0;
	}

	/* Printing happens in two steps. First a Mail is loaded after the
	BeforePrint event, then it is loaded a second time when the actual print
	happens. We have to catch both.
	This functions looks over all mails and checks if one is currently
	printing. If so we compare our EntryID's and if they match. Bingo,
	we are printing, too.*/
	bool
	Mail::checkIfMailMightBePrinting_o ()
	{
	const auto ourID = get_oom_string_s (m_mailitem, "EntryID");
	if (ourID.empty ())
	{
	log_error ("%s:%s: Mail %p has no accessible EntryID",
	SRCNAME, __func__, this);
	return false;
	}
	if (s_entry_ids_printing.find (ourID) != s_entry_ids_printing.end ())
	{
	log_dbg ("Found %s in printing map. This might be a printing child.",
	ourID.c_str ());
	return true;
	}
	return false;
	}

	void
	Mail::setSigningKeys (const std::vector<GpgME::Key> &keys)
	{
	m_resolved_signing_keys = keys;
	}

	std::vector<GpgME::Key>
	Mail::getSigningKeys () const
	{
	return m_resolved_signing_keys;
	}

	LPDISPATCH
	Mail::copy ()
	{
	TSTART;
	VARIANT result;
	VariantInit (&result);

	if (g_mail_copy_triggerer)
	{
	log_err ("BUG: Copy already in progress.");
	TRETURN nullptr;
	}
	g_mail_copy_triggerer = this;
	int err = invoke_oom_method (m_mailitem, "Copy", &result);

	if (err)
	{
	log_error ("%s:%s Failed to copy mail.",
	SRCNAME, __func__);
	TRETURN nullptr;
	}

	if (result.vt != VT_DISPATCH \|\| !result.pdispVal)
	{
	log_error ("%s:%s Unexpected result type %x.",
	SRCNAME, __func__, result.vt);
	TRETURN nullptr;
	}
	return result.pdispVal;
	}

	static std::vector<GpgME::Key>
	getKeysForProtocol (const std::vector<GpgME::Key> keys, GpgME::Protocol proto)
	{
	std::vector<GpgME::Key> ret;

	std::copy_if (keys.begin(), keys.end(),
	std::back_inserter (ret),
	[proto] (const auto &k)
	{
	return k.protocol () == proto;
	});

	return ret;
	}


	/* A callback of a copied mail to update our Mail objects
	after the split */
	void
	Mail::splitCopyMailCallback (Mail *copied_mail)
	{
	TSTART;
	log_dbg ("Copy mail callback reached with mail %p", copied_mail);
	g_mail_copy_triggerer = nullptr;
	copied_mail->setSplitCopy (true);

	std::vector<Recipient> newRecipientsForCopy;
	std::vector<Recipient> newRecipientsForUs;
	GpgME::Protocol copyProtocol = GpgME::UnknownProtocol;

	/* Now split out recipients */
	bool bccFound = false;
	bool normalRecipientsFound = false;
	log_debug ("Dump before split.");
	Recipient::dump (m_cached_recipients);
	bool failureToRemoveBCC = false;
	for (const auto &recp: m_cached_recipients)
	{
	/* We want to always include the originator */
	if (recp.type () == Recipient::olOriginator)
	{
	newRecipientsForCopy.push_back (recp);
	newRecipientsForUs.push_back (recp);
	}
	else if (recp.type () == Recipient::olBCC && !bccFound)
	{
	const auto bccKeys = recp.keys ();
	if (bccKeys.empty())
	{
	log_err ("Empty keylist for recipient!");
	continue;
	}

	const auto pgpKeys = getKeysForProtocol (bccKeys, GpgME::OpenPGP);
	const auto cmsKeys = getKeysForProtocol (bccKeys, GpgME::CMS);

	if (!pgpKeys.empty () && !cmsKeys.empty())
	{
	log_dbg ("Detected BCC Recipient with both PGP and CMS keys."
	" splitting recipient.");
	/* Copy it and keep it as BCC recipient with only PGP keys */
	auto splitRecipient = recp;
	splitRecipient.setKeys (pgpKeys);
	newRecipientsForUs.push_back (splitRecipient);

	/* For the copy use the CMS keys */
	auto splitRecipient2 = recp;
	splitRecipient2.setKeys (cmsKeys);
	newRecipientsForCopy.push_back (splitRecipient2);
	copyProtocol = GpgME::CMS;
	}
	else
	{
	newRecipientsForCopy.push_back (recp);
	/* Our keylist is of a single protocol so we can take that. */
	copyProtocol = bccKeys[0].protocol ();
	log_dbg ("Recipient '%s' is BCC. Gets its own mail with "
	"protocol: %s", anonstr (recp.mbox().c_str ()),
	to_cstr (copyProtocol));
	}
	int err = remove_oom_recipient (m_mailitem, recp.mbox());
	if (err)
	{
	log_dbg ("Failure to remove recipient '%s' possibly a group."
	"overwriting with our recipients.",
	anonstr (recp.mbox ().c_str ()));
	failureToRemoveBCC = true;
	}
	bccFound = true;
	}
	else
	{
	newRecipientsForUs.push_back (recp);
	}
	}
	if (failureToRemoveBCC)
	{
	set_oom_recipients (m_mailitem, newRecipientsForUs);
	}
	setRecipients(newRecipientsForUs);
	copied_mail->setRecipients(newRecipientsForCopy);
	set_oom_recipients (copied_mail->item(), newRecipientsForCopy);
	if (copyProtocol != GpgME::UnknownProtocol)
	{
	copied_mail->setSigningKeys (getKeysForProtocol (m_resolved_signing_keys,
	copyProtocol));
	}
	else
	{
	copied_mail->setSigningKeys (m_resolved_signing_keys);
	}

	if (!bccFound)
	{
	/* TODO: Split more for S/MIME OpenPGP Mix. */
	}

	if (bccFound && normalRecipientsFound)
	{
	/* Recurse */
	log_dbg ("Both normal and hidden recipients found. "
	"Creating another copy.");
	copy ();
	TRETURN;
	}
	}

	void
	Mail::splitAndSend_o ()
	{
	TSTART;
	log_dbg ("Split and send for: %p", this);
	LPDISPATCH copied_mailitem = copy ();

	if (!copied_mailitem)
	{
	log_err ("Failed to copy mail. Aboring.");
	TRETURN;
	}
	/* This triggers the copyMailCallback in the write event */
	invoke_oom_method (copied_mailitem, "Send", nullptr);
	invoke_oom_method (m_mailitem, "Send", nullptr);
	TRETURN;
	}

	void
	Mail::resetCrypter ()
	{
	m_crypter = nullptr;
	}

	void
	Mail::resetRecipients ()
	{
	/* Clear recipient data */
	m_cached_recipients.clear ();
	m_resolved_signing_keys.clear ();
	m_recipients_set = false;
	}

	void
	Mail::setSplitCopy (bool val)
	{
	m_is_split_copy = val;
	}

	bool
	Mail::isSplitCopy () const
	{
	return m_is_split_copy;
	}

	int
	Mail::buildProtectedHeaders_o ()
	{
	TSTART;
	std::stringstream ss;
	std::vector <std::string> toRecps;
	std::vector <std::string> ccRecps;
	std::vector <std::string> bccRecps;
	ss << "protected-headers=\"v1\"\r\n";
	for (const auto &recp: m_cached_recipients)
	{
	if (recp.type() == Recipient::olCC)
	{
	ccRecps.push_back (recp.encodedDisplayName ());
	}
	else if (recp.type() == Recipient::olTo)
	{
	toRecps.push_back (recp.encodedDisplayName ());
	}
	else if (recp.type() == Recipient::olOriginator)
	{
	ss << "From: " << recp.encodedDisplayName () << "\r\n";
	}
	}
	std::string buf;
	if (toRecps.size ())
	{
	join(toRecps, ";", buf);
	ss << "To: " << buf << "\r\n";
	}
	if (ccRecps.size ())
	{
	join(toRecps, ";", buf);
	ss << "CC: " << buf << "\r\n";
	}

	if (opt.encryptSubject)
	{
	char *subject = get_oom_string (m_mailitem, "Subject");
	if (subject)
	{
	char *encodedSubject = utf8_to_rfc2047b (subject);
	if (encodedSubject)
	{
	ss << "Subject: " << encodedSubject << "\r\n";
	}
	xfree (encodedSubject);
	}
	if (!put_oom_string (m_mailitem, "Subject", "..."))
	{
	STRANGEPOINT;
	TRETURN -1;
	}
	xfree (subject);
	}

	m_protected_headers = ss.str ();
	TRETURN 0;
	}

	void
	Mail::setProtectedHeaders (const std::string &hdr)
	{
	m_protected_headers = hdr;
	}

	std::string
	Mail::protectedHeaders () const
	{
	return m_protected_headers;
	}

	header_info_s
	Mail::headerInfo () const
	{
	return m_header_info;
	}

	const std::string&
	Mail::getOriginalBody () const
	{
	return m_orig_body;
	}
	diff --git a/src/mapihelp.cpp b/src/mapihelp.cpp
	index 4c02848..1e99f7a 100644
	--- a/src/mapihelp.cpp
	+++ b/src/mapihelp.cpp
	@@ -1,3978 +1,4056 @@
	/* mapihelp.cpp - Helper functions for MAPI
	* Copyright (C) 2005, 2007, 2008 g10 Code GmbH
	*
	* This file is part of GpgOL.
	*
	* GpgOL is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* GpgOL is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include <ctype.h>
	#include <windows.h>

	#include "mymapi.h"
	#include "mymapitags.h"
	#include "common.h"
	#include "rfc822parse.h"
	#include "mapihelp.h"
	#include "parsetlv.h"
	#include "oomhelp.h"
	+#include "cpphelp.h"

	#include <string>
	+#include <sstream>

	#ifndef CRYPT_E_STREAM_INSUFFICIENT_DATA
	#define CRYPT_E_STREAM_INSUFFICIENT_DATA 0x80091011
	#endif
	#ifndef CRYPT_E_ASN1_BADTAG
	#define CRYPT_E_ASN1_BADTAG 0x8009310B
	#endif


	static int get_attach_method (LPATTACH obj);
	static int has_smime_filename (LPATTACH obj);
	static char *get_attach_mime_tag (LPATTACH obj);




	/* Print a MAPI property to the log stream. */
	void
	log_mapi_property (LPMESSAGE message, ULONG prop, const char *propname)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	size_t keylen;
	void *key;
	char *buf;

	if (!message)
	{
	TRETURN; /* No message: Nop. */
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, prop, &propval);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrGetOneProp(%s) failed: hr=%#lx\n",
	SRCNAME, __func__, propname, hr);
	TRETURN;
	}

	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_BINARY:
	keylen = propval->Value.bin.cb;
	key = propval->Value.bin.lpb;
	log_hexdump (key, keylen, "%s: %20s=", __func__, propname);
	break;

	case PT_UNICODE:
	buf = wchar_to_utf8 (propval->Value.lpszW);
	if (!buf)
	log_debug ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	else
	log_debug ("%s: %20s=`%s'", __func__, propname, buf);
	xfree (buf);
	break;

	case PT_STRING8:
	log_debug ("%s: %20s=`%s'", __func__, propname, propval->Value.lpszA);
	break;

	case PT_LONG:
	log_debug ("%s: %20s=%ld", __func__, propname, propval->Value.l);
	break;

	default:
	log_debug ("%s:%s: HrGetOneProp(%s) property type %lu not supported\n",
	SRCNAME, __func__, propname,
	PROP_TYPE (propval->ulPropTag) );
	TRETURN;
	}
	MAPIFreeBuffer (propval);
	TRETURN;
	}


	/* Helper to create a named property. */
	static ULONG
	create_gpgol_tag (LPMESSAGE message, const wchar_t name, const char func)
	{
	TSTART;
	HRESULT hr;
	LPSPropTagArray proparr = NULL;
	MAPINAMEID mnid, *pmnid;
	wchar_t *propname = xwcsdup (name);
	/* {31805ab8-3e92-11dc-879c-00061b031004}: GpgOL custom properties. */
	GUID guid = {0x31805ab8, 0x3e92, 0x11dc, {0x87, 0x9c, 0x00, 0x06,
	0x1b, 0x03, 0x10, 0x04}};
	ULONG result;

	memset (&mnid, 0, sizeof mnid);
	mnid.lpguid = &guid;
	mnid.ulKind = MNID_STRING;
	mnid.Kind.lpwstrName = propname;
	pmnid = &mnid;
	hr = message->GetIDsFromNames (1, &pmnid, MAPI_CREATE, &proparr);
	xfree (propname);
	if (FAILED (hr))
	proparr = NULL;
	if (FAILED (hr) \|\| !(proparr->aulPropTag[0] & 0xFFFF0000) )
	{
	log_error ("%s:%s: can't map GpgOL property: hr=%#lx\n",
	SRCNAME, func, hr);
	result = 0;
	}
	else
	result = (proparr->aulPropTag[0] & 0xFFFF0000);
	if (proparr)
	MAPIFreeBuffer (proparr);

	TRETURN result;
	}


	/* Return the property tag for GpgOL Msg Class. */
	int
	get_gpgolmsgclass_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Msg Class", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_STRING8;
	TRETURN 0;
	}

	/* Return the property tag for GpgOL Old Msg Class. The Old Msg Class
	saves the message class as seen before we changed it the first
	time. */
	int
	get_gpgololdmsgclass_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Old Msg Class", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_STRING8;
	TRETURN 0;
	}


	/* Return the property tag for GpgOL Attach Type. */
	int
	get_gpgolattachtype_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Attach Type", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_LONG;
	TRETURN 0;
	}


	/* Return the property tag for GpgOL Protect IV. */
	int
	get_gpgolprotectiv_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Protect IV", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_BINARY;
	TRETURN 0;
	}

	/* Return the property tag for GpgOL Last Decrypted. */
	int
	get_gpgollastdecrypted_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Last Decrypted",__func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_BINARY;
	TRETURN 0;
	}


	/* Return the property tag for GpgOL MIME structure. */
	int
	get_gpgolmimeinfo_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL MIME Info", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_STRING8;
	TRETURN 0;
	}


	/* Return the property tag for GpgOL Charset. */
	int
	get_gpgolcharset_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Charset", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_STRING8;
	TRETURN 0;
	}


	/* Return the property tag for GpgOL Draft Info. */
	int
	get_gpgoldraftinfo_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Draft Info", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_STRING8;
	TRETURN 0;
	}


	/* Return the tag of the Internet Charset Body property which seems to
	hold the PR_BODY as received and thus before charset
	conversion. */
	int
	get_internetcharsetbody_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	HRESULT hr;
	LPSPropTagArray proparr = NULL;
	MAPINAMEID mnid, *pmnid;
	/* {4E3A7680-B77A-11D0-9DA5-00C04FD65685} */
	GUID guid = {0x4E3A7680, 0xB77A, 0x11D0, {0x9D, 0xA5, 0x00, 0xC0,
	0x4F, 0xD6, 0x56, 0x85}};
	wchar_t propname[] = L"Internet Charset Body";
	int result;

	memset (&mnid, 0, sizeof mnid);
	mnid.lpguid = &guid;
	mnid.ulKind = MNID_STRING;
	mnid.Kind.lpwstrName = propname;
	pmnid = &mnid;
	hr = message->GetIDsFromNames (1, &pmnid, 0, &proparr);
	if (FAILED (hr))
	proparr = NULL;
	if (FAILED (hr) \|\| !(proparr->aulPropTag[0] & 0xFFFF0000) )
	{
	log_debug ("%s:%s: can't get the Internet Charset Body property:"
	" hr=%#lx\n", SRCNAME, __func__, hr);
	result = -1;
	}
	else
	{
	result = 0;
	*r_tag = ((proparr->aulPropTag[0] & 0xFFFF0000) \| PT_BINARY);
	}

	if (proparr)
	MAPIFreeBuffer (proparr);

	TRETURN result;
	}

	/* Return the property tag for GpgOL UUID Info. */
	static int
	get_gpgoluid_tag (LPMESSAGE message, ULONG *r_tag)
	{
	TSTART;
	if (!(*r_tag = create_gpgol_tag (message, L"GpgOL UID", __func__)))
	{
	TRETURN -1;
	}
	*r_tag \|= PT_UNICODE;
	TRETURN 0;
	}

	char *
	mapi_get_uid (LPMESSAGE msg)
	{
	TSTART;
	/* If the UUID is not in OOM maybe we find it in mapi. */
	if (!msg)
	{
	log_error ("%s:%s: Called without message",
	SRCNAME, __func__);
	TRETURN NULL;
	}
	ULONG tag;
	if (get_gpgoluid_tag (msg, &tag))
	{
	log_debug ("%s:%s: Failed to get tag for '%p'",
	SRCNAME, __func__, msg);
	TRETURN NULL;
	}
	LPSPropValue propval = NULL;
	HRESULT hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
	if (hr)
	{
	log_debug ("%s:%s: Failed to get prop for '%p'",
	SRCNAME, __func__, msg);
	TRETURN NULL;
	}
	char *ret = NULL;
	if (PROP_TYPE (propval->ulPropTag) == PT_UNICODE)
	{
	ret = wchar_to_utf8 (propval->Value.lpszW);
	log_debug ("%s:%s: Fund uuid in MAPI for %p",
	SRCNAME, __func__, msg);
	}
	else if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	{
	ret = xstrdup (propval->Value.lpszA);
	log_debug ("%s:%s: Fund uuid in MAPI for %p",
	SRCNAME, __func__, msg);
	}
	MAPIFreeBuffer (propval);
	TRETURN ret;
	}


	/* A Wrapper around the SaveChanges method. This function should be
	called indirect through the mapi_save_changes macro. Returns 0 on
	success. */
	int
	mapi_do_save_changes (LPMESSAGE message, ULONG flags, int only_del_body,
	const char dbg_file, const char dbg_func)
	{
	TSTART;
	HRESULT hr;
	SPropTagArray proparray;
	int any = 0;

	if (mapi_has_last_decrypted (message))
	{
	proparray.cValues = 1;
	proparray.aulPropTag[0] = PR_BODY;
	hr = message->DeleteProps (&proparray, NULL);
	if (hr)
	log_debug_w32 (hr, "%s:%s: deleting PR_BODY failed",
	log_srcname (dbg_file), dbg_func);
	else
	any = 1;

	proparray.cValues = 1;
	proparray.aulPropTag[0] = PR_BODY_HTML;
	hr = message->DeleteProps (&proparray, NULL);
	if (hr)
	log_debug_w32 (hr, "%s:%s: deleting PR_BODY_HTML failed",
	log_srcname (dbg_file), dbg_func);
	else
	any = 1;
	}

	if (!only_del_body \|\| any)
	{
	int i;
	for (i = 0, hr = 0; hr && i < 10; i++)
	{
	hr = message->SaveChanges (flags);
	if (hr)
	{
	log_debug ("%s:%s: Failed try to save.",
	SRCNAME, __func__);
	Sleep (1000);
	}
	}
	if (hr)
	{
	log_error ("%s:%s: SaveChanges(%lu) failed: hr=%#lx\n",
	log_srcname (dbg_file), dbg_func,
	(unsigned long)flags, hr);
	TRETURN -1;
	}
	}

	TRETURN 0;
	}


	/* Set an arbitary header in the message MSG with NAME to the value
	VAL. */
	int
	mapi_set_header (LPMESSAGE msg, const char name, const char val)
	{
	HRESULT hr;
	LPSPropTagArray pProps = NULL;
	SPropValue pv;
	MAPINAMEID mnid, *pmnid;
	/* {00020386-0000-0000-C000-000000000046} -> GUID For X-Headers */
	GUID guid = {0x00020386, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x46} };
	int result;

	if (!msg)
	{
	TRETURN -1;
	}

	memset (&mnid, 0, sizeof mnid);
	mnid.lpguid = &guid;
	mnid.ulKind = MNID_STRING;
	mnid.Kind.lpwstrName = utf8_to_wchar (name);
	pmnid = &mnid;
	hr = msg->GetIDsFromNames (1, &pmnid, MAPI_CREATE, &pProps);
	xfree (mnid.Kind.lpwstrName);
	if (FAILED (hr))
	{
	pProps = NULL;
	log_error ("%s:%s: can't get mapping for header `%s': hr=%#lx\n",
	SRCNAME, __func__, name, hr);
	result = -1;
	}
	else
	{
	pv.ulPropTag = (pProps->aulPropTag[0] & 0xFFFF0000) \| PT_STRING8;
	pv.Value.lpszA = (char *)val;
	hr = HrSetOneProp(msg, &pv);
	if (hr)
	{
	log_error ("%s:%s: can't set header `%s': hr=%#lx\n",
	SRCNAME, __func__, name, hr);
	result = -1;
	}
	else
	result = 0;
	}

	if (pProps)
	MAPIFreeBuffer (pProps);

	TRETURN result;
	}

	/* Return the data of the first attachment as string. Returns empty
	string on failure. */
	static std::string
	mapi_get_first_attach_data (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSTREAM stream = nullptr;
	ULONG bRead;
	std::string ret;
	if (!message)
	{
	STRANGEPOINT;
	TRETURN ret;
	}

	mapi_attach_item_t *table = mapi_create_attach_table (message, 0);
	if (!table)
	{
	log_debug ("%s:%s: Message has no attachments",
	SRCNAME, __func__);
	TRETURN ret;
	}
	if (table->end_of_table)
	{
	log_debug ("%s:%s: Message has no attachments",
	SRCNAME, __func__);
	mapi_release_attach_table (table);
	TRETURN ret;
	}

	stream = mapi_get_attach_as_stream (message, table, nullptr);
	mapi_release_attach_table (table);
	if (!stream)
	{
	log_debug ("%s:%s: Failed to get attachment as stream",
	SRCNAME, __func__);
	TRETURN ret;
	}
	char buf[8192];
	while ((hr = stream->Read (buf, 8192, &bRead)) == S_OK \|\|
	hr == S_FALSE)
	{
	if (!bRead)
	{
	// EOF
	break;
	}
	ret += std::string (buf, bRead);
	}
	gpgol_release (stream);

	TRETURN ret;
	}

	+static int
	+mapi_set_transport_headers (LPMESSAGE message, const char *data)
	+{
	+ TSTART;
	+ if (!message)
	+ {
	+ STRANGEPOINT;
	+ TRETURN -1;
	+ }
	+ HRESULT hr;
	+ SPropValue prop;
	+ prop.ulPropTag = PR_TRANSPORT_MESSAGE_HEADERS;
	+ /* MAPI wants a non const value. So we better give it to avoid trouble */
	+ prop.Value.lpszA = xstrdup (data);
	+ log_data ("Setting transport headers to:\n%s", data);
	+ hr = HrSetOneProp (message, &prop);
	+ xfree (prop.Value.lpszA);
	+
	+ if (hr)
	+ {
	+ log_error ("%s:%s: can't set transport headerrs property: hr=%#lx\n",
	+ SRCNAME, __func__, hr);
	+ TRETURN -1;
	+ }
	+ TRETURN 0;
	+}
	+
	+int
	+mapi_set_content_type (LPMESSAGE message, const char *ct)
	+{
	+ TSTART;
	+ if (!message)
	+ {
	+ STRANGEPOINT;
	+ TRETURN -1;
	+ }
	+
	+ const auto headers = mapi_get_header (message);
	+ if (headers.empty ())
	+ {
	+ log_err ("Failed to obtain original headers");
	+ TRETURN -1;
	+ }
	+ std::stringstream newHeaders;
	+ bool inCt = false;
	+ for (auto line: gpgol_split (headers, '\n'))
	+ {
	+ transform(line.begin(), line.end(), line.begin(), ::tolower);
	+ if (starts_with (line, "content-type"))
	+ {
	+ inCt = true;
	+ if (ct)
	+ {
	+ newHeaders << "Content-type: " << ct << "\n";
	+ }
	+ }
	+ else if (inCt)
	+ {
	+ if (starts_with (line, " ") \|\| starts_with (line, "\t"))
	+ {
	+ log_data ("Content type header continuation %s ignored.", line.c_str());
	+ continue;
	+ }
	+ else
	+ {
	+ inCt = false;
	+ }
	+ }
	+ else
	+ {
	+ newHeaders << line << "\n";
	+ }
	+ }
	+ TRETURN mapi_set_transport_headers (message, newHeaders.str ().c_str ());
	+}
	+
	/* Return the headers as ASCII string. Returns empty
	string on failure. */
	std::string
	mapi_get_header (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSTREAM stream = nullptr;
	ULONG bRead;
	std::string ret;

	if (!message)
	{
	TRETURN ret;
	}

	hr = gpgol_openProperty (message, PR_TRANSPORT_MESSAGE_HEADERS_A, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	if (hr)
	{
	log_debug ("%s:%s: OpenProperty failed: hr=%#lx", SRCNAME, __func__, hr);
	TRETURN ret;
	}

	char buf[8192];
	while ((hr = stream->Read (buf, 8192, &bRead)) == S_OK \|\|
	hr == S_FALSE)
	{
	if (!bRead)
	{
	// EOF
	break;
	}
	ret += std::string (buf, bRead);
	}
	gpgol_release (stream);
	TRETURN ret;
	}


	/* Return the body as a new IStream object. Returns NULL on failure.
	The stream Returns the body as an ASCII stream (Use mapi_get_body
	for an UTF-8 value). */
	LPSTREAM
	mapi_get_body_as_stream (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	ULONG tag;
	LPSTREAM stream;

	if (!message)
	{
	TRETURN NULL;
	}

	if (!get_internetcharsetbody_tag (message, &tag) )
	{
	/* The store knows about the Internet Charset Body property,
	thus try to get the body from this property if it exists. */

	hr = gpgol_openProperty (message, tag, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	if (!hr)
	{
	TRETURN stream;
	}

	log_debug ("%s:%s: OpenProperty tag=%lx failed: hr=%#lx",
	SRCNAME, __func__, tag, hr);
	}

	/* We try to get it as an ASCII body. If this fails we would either
	need to implement some kind of stream filter to translated to
	utf-8 or read everyting into a memory buffer and [provide an
	istream from that memory buffer. */
	hr = gpgol_openProperty (message, PR_BODY_A, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	if (hr)
	{
	log_debug ("%s:%s: OpenProperty failed: hr=%#lx", SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	TRETURN stream;
	}



	/* Return the body of the message in an allocated buffer. The buffer
	is guaranteed to be Nul terminated. The actual length (ie. the
	strlen()) will be stored at R_NBYTES. The body will be returned in
	UTF-8 encoding. Returns NULL if no body is available. */
	char *
	mapi_get_body (LPMESSAGE message, size_t *r_nbytes)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue lpspvFEID = NULL;
	LPSTREAM stream;
	STATSTG statInfo;
	ULONG nread;
	char *body = NULL;

	if (r_nbytes)
	*r_nbytes = 0;
	hr = HrGetOneProp ((LPMAPIPROP)message, PR_BODY, &lpspvFEID);
	if (SUCCEEDED (hr)) /* Message is small enough to be retrieved directly. */
	{
	switch ( PROP_TYPE (lpspvFEID->ulPropTag) )
	{
	case PT_UNICODE:
	body = wchar_to_utf8 (lpspvFEID->Value.lpszW);
	if (!body)
	log_debug ("%s: error converting to utf8\n", __func__);
	break;

	case PT_STRING8:
	body = xstrdup (lpspvFEID->Value.lpszA);
	break;

	default:
	log_debug ("%s: proptag=0x%08lx not supported\n",
	__func__, lpspvFEID->ulPropTag);
	break;
	}
	MAPIFreeBuffer (lpspvFEID);
	}
	else /* Message is large; use an IStream to read it. */
	{
	hr = gpgol_openProperty (message, PR_BODY, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	if (hr)
	{
	log_debug ("%s:%s: OpenProperty failed: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	hr = stream->Stat (&statInfo, STATFLAG_NONAME);
	if (hr)
	{
	log_debug ("%s:%s: Stat failed: hr=%#lx", SRCNAME, __func__, hr);
	gpgol_release (stream);
	TRETURN NULL;
	}

	/* Fixme: We might want to read only the first 1k to decide
	whether this is actually an OpenPGP message and only then
	continue reading. */
	body = (char*)xmalloc ((size_t)statInfo.cbSize.QuadPart + 2);
	hr = stream->Read (body, (size_t)statInfo.cbSize.QuadPart, &nread);
	if (hr)
	{
	log_debug ("%s:%s: Read failed: hr=%#lx", SRCNAME, __func__, hr);
	xfree (body);
	gpgol_release (stream);
	TRETURN NULL;
	}
	body[nread] = 0;
	body[nread+1] = 0;
	if (nread != statInfo.cbSize.QuadPart)
	{
	log_debug ("%s:%s: not enough bytes returned\n", SRCNAME, __func__);
	xfree (body);
	gpgol_release (stream);
	TRETURN NULL;
	}
	gpgol_release (stream);

	{
	char *tmp;
	tmp = wchar_to_utf8 ((wchar_t*)body);
	if (!tmp)
	log_debug ("%s: error converting to utf8\n", __func__);
	else
	{
	xfree (body);
	body = tmp;
	}
	}
	}

	if (r_nbytes)
	*r_nbytes = strlen (body);
	TRETURN body;
	}



	/* Look at the body of the MESSAGE and try to figure out whether this
	is a supported PGP message. Returns the new message class or NULL
	if it does not look like a PGP message.

	If r_nobody is not null it is set to true if no body was found.
	*/
	static char *
	get_msgcls_from_pgp_lines (LPMESSAGE message, bool *r_nobody = nullptr)
	{
	TSTART;
	HRESULT hr;
	LPSTREAM stream;
	STATSTG statInfo;
	ULONG nread;
	size_t nbytes;
	char *body = NULL;
	char *p;
	char *msgcls = NULL;
	int is_wchar = 0;

	if (r_nobody)
	{
	*r_nobody = false;
	}

	stream = mapi_get_body_as_stream (message);
	if (!stream)
	{
	log_debug ("%s:%s: Failed to get body ASCII stream.",
	SRCNAME, __func__);
	hr = gpgol_openProperty (message, PR_BODY_W, &IID_IStream, 0, 0,
	(LPUNKNOWN*)&stream);
	if (hr)
	{
	log_error ("%s:%s: Failed to get w_body stream. : hr=%#lx",
	SRCNAME, __func__, hr);
	if (r_nobody)
	{
	*r_nobody = true;
	}
	TRETURN NULL;
	}
	else
	{
	is_wchar = 1;
	}
	}

	hr = stream->Stat (&statInfo, STATFLAG_NONAME);
	if (hr)
	{
	log_debug ("%s:%s: Stat failed: hr=%#lx", SRCNAME, __func__, hr);
	gpgol_release (stream);
	TRETURN NULL;
	}

	/* We read only the first 1k to decide whether this is actually an
	OpenPGP armored message . */
	nbytes = (size_t)statInfo.cbSize.QuadPart;
	if (nbytes > 1024*2)
	nbytes = 1024*2;
	body = (char*)xmalloc (nbytes + 2);
	hr = stream->Read (body, nbytes, &nread);
	if (hr)
	{
	log_debug ("%s:%s: Read failed: hr=%#lx", SRCNAME, __func__, hr);
	xfree (body);
	gpgol_release (stream);
	TRETURN NULL;
	}
	body[nread] = 0;
	body[nread+1] = 0;
	if (nread != nbytes)
	{
	log_debug ("%s:%s: not enough bytes returned\n", SRCNAME, __func__);

	xfree (body);
	gpgol_release (stream);
	TRETURN NULL;
	}
	gpgol_release (stream);

	if (is_wchar)
	{
	char *tmp;
	tmp = wchar_to_utf8 ((wchar_t*)body);
	if (!tmp)
	log_debug ("%s: error converting to utf8\n", __func__);
	else
	{
	xfree (body);
	body = tmp;
	}
	}


	/* The first ~1k of the body of the message is now available in the
	utf-8 string BODY. Walk over it to figure out its type. */
	for (p=body; p && *p; p = ((p=strchr (p+1, '\n')) ? (p+1) : NULL))
	{
	if (!strncmp (p, "-----BEGIN PGP ", 15))
	{
	/* Enabling clearsigned detection for Outlook 2010 and later
	would result in data loss as the signature is not reverted. */
	if (!strncmp (p+15, "SIGNED MESSAGE-----", 19)
	&& trailing_ws_p (p+15+19))
	msgcls = xstrdup ("IPM.Note.GpgOL.ClearSigned");
	else if (!strncmp (p+15, "MESSAGE-----", 12)
	&& trailing_ws_p (p+15+12))
	msgcls = xstrdup ("IPM.Note.GpgOL.PGPMessage");
	break;
	}
	else if (!trailing_ws_p (p))
	{
	/* We have text before the message. In that case we need
	to break because some bad MUA's like Outlook do not insert
	quote characters before a replied to message. In that case
	the reply to an inline Mail from an Outlook without GpgOL
	enabled could cause the behavior that we would detect
	the original message.
	*/
	log_debug ("%s:%s: Detected non whitespace %c before a PGP Marker",
	SRCNAME, __func__, *p);
	break;
	}
	}


	xfree (body);
	TRETURN msgcls;
	}


	/* Check whether the message is really a CMS encrypted message.
	We check here whether the message is really encrypted by looking at
	the object identifier inside the CMS data. Returns:
	-1 := Unknown message type,
	0 := The message is signed,
	1 := The message is encrypted.

	This function is required for two reasons:

	1. Due to a bug in CryptoEx which sometimes assignes the *.CexEnc
	message class to signed messages and only updates the message
	class after accessing them. Thus in old stores there may be a
	lot of *.CexEnc message which are actually just signed.

	2. If the smime-type parameter is missing we need another way to
	decide whether to decrypt or to verify.

	3. Some messages lack a PR_TRANSPORT_MESSAGE_HEADERS and thus it is
	not possible to deduce the message type from the mail headers.
	This function may be used to identify the message anyway.
	*/
	static int
	is_really_cms_encrypted (LPMESSAGE message)
	{
	HRESULT hr;
	SizedSPropTagArray (1L, propAttNum) = { 1L, {PR_ATTACH_NUM} };
	LPMAPITABLE mapitable;
	LPSRowSet mapirows;
	unsigned int pos, n_attach;
	int result = -1; /* Unknown. */
	LPATTACH att = NULL;
	LPSTREAM stream = NULL;
	char buffer[24]; /* 24 bytes are more than enough to peek at.
	Cf. ksba_cms_identify() from the libksba
	package. */
	const char *p;
	ULONG nread;
	size_t n;
	tlvinfo_t ti;

	hr = message->GetAttachmentTable (0, &mapitable);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN -1;
	}
	memdbg_addRef (mapitable);

	hr = HrQueryAllRows (mapitable, (LPSPropTagArray)&propAttNum,
	NULL, NULL, 0, &mapirows);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrQueryAllRows failed: hr=%#lx",
	SRCNAME, __func__, hr);
	gpgol_release (mapitable);
	TRETURN -1;
	}
	n_attach = mapirows->cRows > 0? mapirows->cRows : 0;
	if (n_attach != 1)
	{
	FreeProws (mapirows);
	gpgol_release (mapitable);
	log_debug ("%s:%s: not just one attachment", SRCNAME, __func__);
	TRETURN -1;
	}
	pos = 0;

	if (mapirows->aRow[pos].cValues < 1)
	{
	log_error ("%s:%s: invalid row at pos %d", SRCNAME, __func__, pos);
	goto leave;
	}
	if (mapirows->aRow[pos].lpProps[0].ulPropTag != PR_ATTACH_NUM)
	{
	log_error ("%s:%s: invalid prop at pos %d", SRCNAME, __func__, pos);
	goto leave;
	}
	hr = message->OpenAttach (mapirows->aRow[pos].lpProps[0].Value.l,
	NULL, MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment %d (%ld): hr=%#lx",
	SRCNAME, __func__, pos,
	mapirows->aRow[pos].lpProps[0].Value.l, hr);
	goto leave;
	}
	memdbg_addRef (att);
	if (!has_smime_filename (att))
	{
	log_debug ("%s:%s: no smime filename", SRCNAME, __func__);
	goto leave;
	}
	if (get_attach_method (att) != ATTACH_BY_VALUE)
	{
	log_debug ("%s:%s: wrong attach method", SRCNAME, __func__);
	goto leave;
	}

	hr = gpgol_openProperty (att, PR_ATTACH_DATA_BIN, &IID_IStream,
	0, 0, (LPUNKNOWN*) &stream);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open data stream of attachment: hr=%#lx",
	SRCNAME, __func__, hr);
	goto leave;
	}

	memdbg_addRef (stream);
	hr = stream->Read (buffer, sizeof buffer, &nread);
	if ( hr != S_OK )
	{
	log_error ("%s:%s: Read failed: hr=%#lx", SRCNAME, __func__, hr);
	goto leave;
	}
	if (nread < sizeof buffer)
	{
	log_error ("%s:%s: not enough bytes returned\n", SRCNAME, __func__);
	goto leave;
	}

	p = buffer;
	n = nread;
	if (parse_tlv (&p, &n, &ti))
	goto leave;
	if (!(ti.cls == ASN1_CLASS_UNIVERSAL && ti.tag == ASN1_TAG_SEQUENCE
	&& ti.is_cons) )
	goto leave;
	if (parse_tlv (&p, &n, &ti))
	goto leave;
	if (!(ti.cls == ASN1_CLASS_UNIVERSAL && ti.tag == ASN1_TAG_OBJECT_ID
	&& !ti.is_cons && ti.length) \|\| ti.length > n)
	goto leave;
	/* Now is this enveloped data (1.2.840.113549.1.7.3)
	or signed data (1.2.840.113549.1.7.2) ? */
	if (ti.length == 9)
	{
	if (!memcmp (p, "\x2A\x86\x48\x86\xF7\x0D\x01\x07\x03", 9))
	result = 1; /* Encrypted. */
	else if (!memcmp (p, "\x2A\x86\x48\x86\xF7\x0D\x01\x07\x02", 9))
	result = 0; /* Signed. */
	}

	leave:
	if (stream)
	gpgol_release (stream);
	if (att)
	gpgol_release (att);
	FreeProws (mapirows);
	gpgol_release (mapitable);
	TRETURN result;
	}



	/* Return the content-type of the first and only attachment of MESSAGE
	or NULL if it does not exists. Caller must free. */
	static char *
	get_first_attach_mime_tag (LPMESSAGE message)
	{
	HRESULT hr;
	SizedSPropTagArray (1L, propAttNum) = { 1L, {PR_ATTACH_NUM} };
	LPMAPITABLE mapitable;
	LPSRowSet mapirows;
	unsigned int pos, n_attach;
	LPATTACH att = NULL;
	char *result = NULL;

	hr = message->GetAttachmentTable (0, &mapitable);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}
	memdbg_addRef (mapitable);

	hr = HrQueryAllRows (mapitable, (LPSPropTagArray)&propAttNum,
	NULL, NULL, 0, &mapirows);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrQueryAllRows failed: hr=%#lx",
	SRCNAME, __func__, hr);
	gpgol_release (mapitable);
	TRETURN NULL;
	}
	n_attach = mapirows->cRows > 0? mapirows->cRows : 0;
	if (n_attach < 1)
	{
	FreeProws (mapirows);
	gpgol_release (mapitable);
	log_debug ("%s:%s: less then one attachment", SRCNAME, __func__);
	TRETURN NULL;
	}
	pos = 0;

	if (mapirows->aRow[pos].cValues < 1)
	{
	log_error ("%s:%s: invalid row at pos %d", SRCNAME, __func__, pos);
	goto leave;
	}
	if (mapirows->aRow[pos].lpProps[0].ulPropTag != PR_ATTACH_NUM)
	{
	log_error ("%s:%s: invalid prop at pos %d", SRCNAME, __func__, pos);
	goto leave;
	}
	hr = message->OpenAttach (mapirows->aRow[pos].lpProps[0].Value.l,
	NULL, MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment %d (%ld): hr=%#lx",
	SRCNAME, __func__, pos,
	mapirows->aRow[pos].lpProps[0].Value.l, hr);
	goto leave;
	}
	memdbg_addRef (att);

	/* Note: We do not expect a filename. */

	if (get_attach_method (att) != ATTACH_BY_VALUE)
	{
	log_debug ("%s:%s: wrong attach method", SRCNAME, __func__);
	goto leave;
	}

	result = get_attach_mime_tag (att);

	leave:
	if (att)
	gpgol_release (att);
	FreeProws (mapirows);
	gpgol_release (mapitable);
	TRETURN result;
	}


	/* Look at the first attachment's content type to determine the
	messageclass. */
	static char *
	get_msgcls_from_first_attachment (LPMESSAGE message)
	{
	TSTART;
	char *ret = nullptr;
	char *attach_mime = get_first_attach_mime_tag (message);
	if (!attach_mime)
	{
	TRETURN nullptr;
	}
	if (!strcmp (attach_mime, "application/pgp-encrypted"))
	{
	ret = xstrdup ("IPM.Note.GpgOL.MultipartEncrypted");
	xfree (attach_mime);
	}
	else if (!strcmp (attach_mime, "application/pgp-signature"))
	{
	ret = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	xfree (attach_mime);
	}
	TRETURN ret;
	}

	/* Helper for mapi_change_message_class. Returns the new message
	class as an allocated string.

	Most message today are of the message class "IPM.Note". However a
	PGP/MIME encrypted message also has this class. We need to see
	whether we can detect such a mail right here and change the message
	class accordingly. */
	static char *
	change_message_class_ipm_note (LPMESSAGE message)
	{
	TSTART;
	char *newvalue = NULL;
	char ct, proto;

	ct = mapi_get_message_content_type (message, &proto, NULL);
	log_debug ("%s:%s: content type is '%s'", SRCNAME, __func__,
	ct ? ct : "null");
	/* First the simplest check */
	if (ct && !strcmp (ct, "wks.confirmation.mail"))
	{
	log_dbg ("Setting WKSConfirmation");
	newvalue = xstrdup ("IPM.Note.GpgOL.WKSConfirmation");
	}
	else if (ct && proto)
	{
	log_debug ("%s:%s: protocol is '%s'", SRCNAME, __func__, proto);

	if (!strcmp (ct, "multipart/encrypted")
	&& !strcmp (proto, "application/pgp-encrypted"))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartEncrypted");
	}
	else if (!strcmp (ct, "multipart/signed")
	&& !strcmp (proto, "application/pgp-signature"))
	{
	/* Sometimes we receive a PGP/MIME signed message with a
	class IPM.Note. */
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	}
	else if (!strcmp (ct, "multipart/mixed")
	&& !strcmp (proto, "application/pgp-encrypted"))
	{
	/* This case happens if an encrypted mail is moved
	by outlook local filter rules.
	*/
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartEncrypted");
	}
	xfree (proto);
	}
	else if (ct && !strcmp (ct, "application/ms-tnef"))
	{
	/* ms-tnef can either be inline PGP or PGP/MIME. First check
	for inline and then look at the attachments if they look
	like PGP /MIME .*/
	newvalue = get_msgcls_from_pgp_lines (message);
	if (!newvalue)
	{
	/* So no PGP Inline. Lets look at the attachment. */
	newvalue = get_msgcls_from_first_attachment (message);
	}
	}
	else if (!ct \|\| !strcmp (ct, "text/plain") \|\|
	!strcmp (ct, "multipart/mixed") \|\|
	!strcmp (ct, "multipart/alternative") \|\|
	!strcmp (ct, "multipart/related") \|\|
	!strcmp (ct, "text/html"))
	{
	bool has_no_body = false;
	/* It is quite common to have a multipart/mixed or alternative
	mail with separate encrypted PGP parts. Look at the body to
	decide. */
	newvalue = get_msgcls_from_pgp_lines (message, &has_no_body);

	if (!newvalue && has_no_body && ct && !strcmp (ct, "multipart/mixed"))
	{
	/* This is uncommon. But some Exchanges might break a PGP/MIME mail
	this way. Let's take a look at the attachments. Maybe it's
	a PGP/MIME mail. */
	log_debug ("%s:%s: Multipart mixed without body found. Looking at attachments.",
	SRCNAME, __func__);
	newvalue = get_msgcls_from_first_attachment (message);
	}
	}

	xfree (ct);

	TRETURN newvalue;
	}

	/* Helper for mapi_change_message_class. Returns the new message
	class as an allocated string.

	This function is used for the message class "IPM.Note.SMIME". It
	indicates an S/MIME opaque encrypted or signed message. This may
	also be an PGP/MIME mail. */
	static char *
	change_message_class_ipm_note_smime (LPMESSAGE message)
	{
	TSTART;
	char *newvalue = NULL;
	char ct, proto, *smtype;

	ct = mapi_get_message_content_type (message, &proto, &smtype);
	if (ct)
	{
	log_debug ("%s:%s: content type is '%s'", SRCNAME, __func__, ct);
	if (proto
	&& !strcmp (ct, "multipart/signed")
	&& !strcmp (proto, "application/pgp-signature"))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	}
	else if (!opt.enable_smime)
	; /* S/MIME not enabled; thus no further checks. */
	else if (smtype)
	{
	log_debug ("%s:%s: smime-type is '%s'", SRCNAME, __func__, smtype);

	if (!strcmp (ct, "application/pkcs7-mime")
	\|\| !strcmp (ct, "application/x-pkcs7-mime"))
	{
	if (!strcmp (smtype, "signed-data"))
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	else if (!strcmp (smtype, "enveloped-data"))
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	}
	}
	else if (proto && !strcmp (ct, "multipart/signed")
	&& (!strcmp (proto, "application/pkcs7-signature")
	\|\| !strcmp (proto, "application/x-pkcs7-signature")))
	{
	log_debug ("%s:%s: protocol is '%s'", SRCNAME, __func__, proto);
	newvalue = xstrdup ("IPM.Note.GpgOL.SM.MultipartSigned");
	}
	else
	{
	/* No smime type. The filename parameter is often not
	reliable, thus we better look into the message to see if
	it is encrypted and assume an opaque signed one if this
	is not the case. */
	switch (is_really_cms_encrypted (message))
	{
	case 0:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	break;
	case 1:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	break;
	}

	}
	xfree (smtype);
	xfree (proto);
	xfree (ct);
	}
	else
	{
	log_debug ("%s:%s: message has no content type", SRCNAME, __func__);

	/* CryptoEx (or the Toltec Connector) create messages without
	the transport headers property and thus we don't know the
	content type. We try to detect the message type anyway by
	looking into the first and only attachments. */
	switch (is_really_cms_encrypted (message))
	{
	case 0:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	break;
	case 1:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	break;
	default: /* Unknown. */
	break;
	}
	}

	/* If we did not found anything but let's change the class anyway. */
	if (!newvalue && opt.enable_smime)
	{
	log_debug ("%s:%s WARNING: Failed to detect smime. Fallback "
	"to OpaqueEncrypted", SRCNAME, __func__);
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	}

	TRETURN newvalue;
	}

	/* Helper for mapi_change_message_class. Returns the new message
	class as an allocated string.

	This function is used for the message class
	"IPM.Note.SMIME.MultipartSigned". This is an S/MIME message class
	but smime support is not enabled. We need to check whether this is
	actually a PGP/MIME message. */
	static char *
	change_message_class_ipm_note_smime_multipartsigned (LPMESSAGE message)
	{
	TSTART;
	char *newvalue = NULL;
	char ct, proto;

	ct = mapi_get_message_content_type (message, &proto, NULL);
	if (ct)
	{
	log_debug ("%s:%s: content type is '%s'", SRCNAME, __func__, ct);
	if (proto
	&& !strcmp (ct, "multipart/signed")
	&& !strcmp (proto, "application/pgp-signature"))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	}
	else if (!strcmp (ct, "wks.confirmation.mail"))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.WKSConfirmation");
	}
	xfree (proto);
	xfree (ct);
	}
	else
	log_debug ("%s:%s: message has no content type", SRCNAME, __func__);

	TRETURN newvalue;
	}

	/* Helper for mapi_change_message_class. Returns the new message
	class as an allocated string.

	This function is used for the message classes
	"IPM.Note.Secure.CexSig" and "IPM.Note.Secure.Cexenc" (in the
	latter case IS_CEXSIG is true). These are CryptoEx generated
	signature or encryption messages. */
	static char *
	change_message_class_ipm_note_secure_cex (LPMESSAGE message, int is_cexenc)
	{
	TSTART;
	char *newvalue = NULL;
	char ct, smtype, *proto;

	ct = mapi_get_message_content_type (message, &proto, &smtype);
	if (ct)
	{
	log_debug ("%s:%s: content type is '%s'", SRCNAME, __func__, ct);
	if (smtype)
	log_debug ("%s:%s: smime-type is '%s'", SRCNAME, __func__, smtype);
	if (proto)
	log_debug ("%s:%s: protocol is '%s'", SRCNAME, __func__, proto);

	if (smtype)
	{
	if (!strcmp (ct, "application/pkcs7-mime")
	\|\| !strcmp (ct, "application/x-pkcs7-mime"))
	{
	if (!strcmp (smtype, "signed-data"))
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	else if (!strcmp (smtype, "enveloped-data"))
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	}
	}

	if (!newvalue && proto)
	{
	if (!strcmp (ct, "multipart/signed")
	&& (!strcmp (proto, "application/pkcs7-signature")
	\|\| !strcmp (proto, "application/x-pkcs7-signature")))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.SM.MultipartSigned");
	}
	else if (!strcmp (ct, "multipart/signed")
	&& (!strcmp (proto, "application/pgp-signature")))
	{
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	}
	}

	if (!newvalue && (!strcmp (ct, "text/plain") \|\|
	!strcmp (ct, "multipart/alternative") \|\|
	!strcmp (ct, "multipart/mixed")))
	{
	newvalue = get_msgcls_from_pgp_lines (message);
	}

	if (!newvalue)
	{
	switch (is_really_cms_encrypted (message))
	{
	case 0:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	break;
	case 1:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	break;
	}
	}

	xfree (smtype);
	xfree (proto);
	xfree (ct);
	}
	else
	{
	log_debug ("%s:%s: message has no content type", SRCNAME, __func__);
	if (is_cexenc)
	{
	switch (is_really_cms_encrypted (message))
	{
	case 0:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueSigned");
	break;
	case 1:
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");
	break;
	}
	}
	else
	{
	char *mimetag;

	mimetag = get_first_attach_mime_tag (message);
	if (mimetag && !strcmp (mimetag, "multipart/signed"))
	newvalue = xstrdup ("IPM.Note.GpgOL.MultipartSigned");
	xfree (mimetag);
	}

	if (!newvalue)
	{
	newvalue = get_msgcls_from_pgp_lines (message);
	}
	}

	if (!newvalue)
	newvalue = xstrdup ("IPM.Note.GpgOL.OpaqueEncrypted");

	TRETURN newvalue;
	}

	static msgtype_t
	string_to_type (const char *s)
	{
	TSTART;
	if (!s \|\| strlen (s) < 14)
	{
	TRETURN MSGTYPE_UNKNOWN;
	}
	if (!strncmp (s, "IPM.Note.GpgOL", 14) && (!s[14] \|\| s[14] =='.'))
	{
	s += 14;
	if (!*s)
	{
	TRETURN MSGTYPE_GPGOL;
	}
	else if (!strcmp (s, ".SM.MultipartSigned"))
	{
	TRETURN MSGTYPE_GPGOL_MULTIPART_SIGNED;
	}
	else if (!strcmp (s, ".MultipartSigned"))
	{
	TRETURN MSGTYPE_GPGOL_MULTIPART_SIGNED;
	}
	else if (!strcmp (s, ".MultipartEncrypted"))
	{
	TRETURN MSGTYPE_GPGOL_MULTIPART_ENCRYPTED;
	}
	else if (!strcmp (s, ".OpaqueSigned"))
	{
	TRETURN MSGTYPE_GPGOL_OPAQUE_SIGNED;
	}
	else if (!strcmp (s, ".OpaqueEncrypted"))
	{
	TRETURN MSGTYPE_GPGOL_OPAQUE_ENCRYPTED;
	}
	else if (!strcmp (s, ".ClearSigned"))
	{
	TRETURN MSGTYPE_GPGOL_CLEAR_SIGNED;
	}
	else if (!strcmp (s, ".PGPMessage"))
	{
	TRETURN MSGTYPE_GPGOL_PGP_MESSAGE;
	}
	else if (!strcmp (s, ".WKSConfirmation"))
	{
	TRETURN MSGTYPE_GPGOL_WKS_CONFIRMATION;
	}
	else
	log_debug ("%s:%s: message class `%s' not supported",
	SRCNAME, __func__, s-14);
	}
	else if (!strncmp (s, "IPM.Note.SMIME", 14) && (!s[14] \|\| s[14] =='.'))
	{
	TRETURN MSGTYPE_SMIME;
	}
	TRETURN MSGTYPE_UNKNOWN;
	}


	/* This function checks whether MESSAGE requires processing by us and
	adjusts the message class to our own. By passing true for
	SYNC_OVERRIDE the actual MAPI message class will be updated to our
	own message class overide. TRETURN true if the message was
	changed. */
	int
	mapi_change_message_class (LPMESSAGE message, int sync_override,
	msgtype_t *r_type)
	{
	TSTART;
	HRESULT hr;
	ULONG tag;
	SPropValue prop;
	LPSPropValue propval = NULL;
	char *newvalue = NULL;
	int need_save = 0;
	int have_override = 0;

	if (!message)
	{
	TRETURN 0; /* No message: Nop. */
	}

	if (get_gpgolmsgclass_tag (message, &tag) )
	{
	TRETURN 0; /* Ooops. */
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
	if (FAILED (hr))
	{
	hr = HrGetOneProp ((LPMAPIPROP)message, PR_MESSAGE_CLASS_A, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: HrGetOneProp() failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN 0;
	}
	}
	else
	{
	have_override = 1;
	log_debug ("%s:%s: have override message class\n", SRCNAME, __func__);
	}

	if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
	{
	const char *s = propval->Value.lpszA;
	int cexenc = 0;

	log_debug ("%s:%s: checking message class `%s'",
	SRCNAME, __func__, s);
	if (!strcmp (s, "IPM.Note"))
	{
	newvalue = change_message_class_ipm_note (message);
	}
	else if (opt.enable_smime && (!strcmp (s, "IPM.Note.SMIME") \|\|
	!strcmp (s, "IPM.Note.GpgOL")))
	{
	newvalue = change_message_class_ipm_note_smime (message);
	}
	else if (opt.enable_smime
	&& !strncmp (s, "IPM.Note.SMIME", 14) && (!s[14]\|\|s[14] =='.'))
	{
	/* This is "IPM.Note.SMIME.foo" (where ".foo" is optional
	but the previous condition has already taken care of
	this). Note that we can't just insert a new part and
	keep the SMIME; we need to change the SMIME part of the
	class name so that Outlook does not process it as an
	SMIME message. */

	char *tmp = change_message_class_ipm_note_smime_multipartsigned
	(message);
	/* This case happens even for PGP/MIME mails but that is ok
	as we later fiddle out the protocol. But we have to
	check if this is a WKS Mail now so that we can do the
	special handling for that. */
	if (tmp && !strcmp (tmp, "IPM.Note.GpgOL.WKSConfirmation"))
	{
	newvalue = tmp;
	}
	else
	{
	xfree (tmp);
	gpgrt_asprintf (&newvalue, "IPM.Note.GpgOL.SM%s", s+14);
	memdbg_alloc (newvalue);
	}
	}
	else if (!strcmp (s, "IPM.Note.SMIME.MultipartSigned"))
	{
	/* This is an S/MIME message class but smime support is not
	enabled. We need to check whether this is actually a
	PGP/MIME message. */
	newvalue = change_message_class_ipm_note_smime_multipartsigned
	(message);
	}
	else if (sync_override && have_override
	&& !strncmp (s, "IPM.Note.GpgOL", 14) && (!s[14]\|\|s[14] =='.'))
	{
	/* In case the original message class is not yet an GpgOL
	class we set it here. This is needed to convince Outlook
	not to do any special processing for IPM.Note.SMIME etc. */
	LPSPropValue propval2 = NULL;

	hr = HrGetOneProp ((LPMAPIPROP)message, PR_MESSAGE_CLASS_A,
	&propval2);
	if (!SUCCEEDED (hr))
	{
	log_debug ("%s:%s: Failed to get PR_MESSAGE_CLASS_A property.",
	SRCNAME, __func__);
	}
	else if (PROP_TYPE (propval2->ulPropTag) != PT_STRING8)
	{
	log_debug ("%s:%s: PR_MESSAGE_CLASS_A is not string.",
	SRCNAME, __func__);
	}
	else if (!propval2->Value.lpszA)
	{
	log_debug ("%s:%s: PR_MESSAGE_CLASS_A is null.",
	SRCNAME, __func__);
	}
	else if (!strcmp (propval2->Value.lpszA, s))
	{
	log_debug ("%s:%s: PR_MESSAGE_CLASS_A is already the same.",
	SRCNAME, __func__);
	}
	else
	{
	newvalue = (char*)xstrdup (s);
	}
	MAPIFreeBuffer (propval2);
	}
	else if (opt.enable_smime
	&& (!strcmp (s, "IPM.Note.Secure.CexSig")
	\|\| (cexenc = !strcmp (s, "IPM.Note.Secure.CexEnc"))))
	{
	newvalue = change_message_class_ipm_note_secure_cex
	(message, cexenc);
	}
	if (r_type && !newvalue)
	{
	*r_type = string_to_type (s);
	}
	}

	if (!newvalue)
	{
	log_debug ("%s:%s Message is not a crypto message or already in the right class.",
	SRCNAME, __func__);
	}
	else
	{
	if (r_type)
	{
	*r_type = string_to_type (newvalue);
	}
	/* Save old message class if not yet done. (The second
	condition is just a failsafe check). */
	if (!get_gpgololdmsgclass_tag (message, &tag)
	&& PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	{
	LPSPropValue propval2 = NULL;

	hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval2);
	if (!FAILED (hr))
	MAPIFreeBuffer (propval2);
	else
	{
	/* No such property - save it. */
	log_debug ("%s:%s: saving old message class\n",
	SRCNAME, __func__);
	prop.ulPropTag = tag;
	prop.Value.lpszA = propval->Value.lpszA;
	hr = message->SetProps (1, &prop, NULL);
	if (hr)
	{
	log_error ("%s:%s: can't save old message class: hr=%#lx\n",
	SRCNAME, __func__, hr);
	MAPIFreeBuffer (propval);
	TRETURN 0;
	}
	need_save = 1;
	}
	}

	/* Change message class. */
	log_debug ("%s:%s: setting message class to `%s'\n",
	SRCNAME, __func__, newvalue);
	prop.ulPropTag = PR_MESSAGE_CLASS_A;
	prop.Value.lpszA = newvalue;
	hr = message->SetProps (1, &prop, NULL);
	xfree (newvalue);
	if (hr)
	{
	log_error ("%s:%s: can't set message class: hr=%#lx\n",
	SRCNAME, __func__, hr);
	MAPIFreeBuffer (propval);
	TRETURN 0;
	}
	need_save = 1;
	}

	MAPIFreeBuffer (propval);

	if (need_save)
	{
	if (mapi_save_changes (message, KEEP_OPEN_READWRITE\|FORCE_SAVE))
	{
	TRETURN 0;
	}
	}

	TRETURN 1;
	}


	/* Return the message class. This function will never return NULL so
	it is mostly useful for debugging. Caller needs to release the
	returned string. */
	char *
	mapi_get_message_class (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *retstr;

	if (!message)
	{
	TRETURN xstrdup ("[No message]");
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, PR_MESSAGE_CLASS_A, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: HrGetOneProp() failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN xstrdup (hr == MAPI_E_NOT_FOUND?
	"[No message class property]":
	"[Error getting message class property]");
	}

	if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
	retstr = xstrdup (propval->Value.lpszA);
	else
	retstr = xstrdup ("[Invalid message class property]");

	MAPIFreeBuffer (propval);
	TRETURN retstr;
	}

	/* Return the old message class. This function returns NULL if no old
	message class has been saved. Caller needs to release the returned
	string. */
	char *
	mapi_get_old_message_class (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	ULONG tag;
	LPSPropValue propval = NULL;
	char *retstr;

	if (!message)
	{
	TRETURN NULL;
	}

	if (get_gpgololdmsgclass_tag (message, &tag))
	{
	TRETURN NULL;
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: HrGetOneProp() failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
	retstr = xstrdup (propval->Value.lpszA);
	else
	retstr = NULL;

	MAPIFreeBuffer (propval);
	TRETURN retstr;
	}



	/* Return the sender of the message. According to the specs this is
	an UTF-8 string; we rely on that the UI server handles
	internationalized domain names. */
	char *
	mapi_get_sender (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *buf;
	char p0, p;

	if (!message)
	{
	TRETURN NULL; /* No message: Nop. */
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, PR_PRIMARY_SEND_ACCT, &propval);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrGetOneProp failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	if (PROP_TYPE (propval->ulPropTag) != PT_UNICODE)
	{
	log_debug ("%s:%s: HrGetOneProp Returns invalid type %lu\n",
	SRCNAME, __func__, PROP_TYPE (propval->ulPropTag) );
	MAPIFreeBuffer (propval);
	TRETURN NULL;
	}

	buf = wchar_to_utf8 (propval->Value.lpszW);
	MAPIFreeBuffer (propval);
	if (!buf)
	{
	log_error ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	TRETURN NULL;
	}
	/* The PR_PRIMARY_SEND_ACCT property seems to be divided into fields
	using Ctrl-A as delimiter. The first field looks like the ascii
	formatted number of fields to follow, the second field like the
	email account and the third seems to be a textual description of
	that account. We return the second field. */
	p = strchr (buf, '\x01');
	if (!p)
	{
	log_error ("%s:%s: unknown format of the value `%s'\n",
	SRCNAME, __func__, anonstr (buf));
	xfree (buf);
	TRETURN NULL;
	}
	for (p0=buf, p++; p && p != '\x01';)
	p0++ = p++;
	*p0 = 0;

	/* When using an Exchange account this is an X.509 address and not
	an SMTP address. We try to detect this here and extract only the
	CN RDN. Note that there are two CNs. This is just a simple
	approach and not a real parser. A better way to do this would be
	to ask MAPI to resolve the X.500 name to an SMTP name. */
	if (strstr (buf, "/o=") && strstr (buf, "/ou=") &&
	(p = strstr (buf, "/cn=Recipients")) && (p = strstr (p+1, "/cn=")))
	{
	log_debug ("%s:%s: orig address is `%s'\n", SRCNAME, __func__,
	anonstr (buf));
	memmove (buf, p+4, strlen (p+4)+1);
	if (!strchr (buf, '@'))
	{
	/* Some Exchange accounts return only the accoutn name and
	no rfc821 mail address. Kleopatra chokes on that, thus
	we append a domain name. Thisis a bad hack. */
	char newbuf = (char )xmalloc (strlen (buf) + 6 + 1);
	strcpy (stpcpy (newbuf, buf), "@local");
	xfree (buf);
	buf = newbuf;
	}

	}
	log_debug ("%s:%s: address is `%s'\n", SRCNAME, __func__, anonstr (buf));
	TRETURN buf;
	}

	static char *
	resolve_ex_from_address (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	char *sender_entryid;
	size_t entryidlen;
	LPMAPISESSION session;
	ULONG utype;
	LPUNKNOWN user;
	LPSPropValue propval = NULL;
	char *buf;

	if (g_ol_version_major < 14)
	{
	log_debug ("%s:%s: Not implemented for Ol < 14", SRCNAME, __func__);
	TRETURN NULL;
	}

	sender_entryid = mapi_get_binary_prop (message, PR_SENDER_ENTRYID,
	&entryidlen);
	if (!sender_entryid)
	{
	log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
	TRETURN NULL;
	}

	session = get_oom_mapi_session ();

	if (!session)
	{
	log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
	xfree (sender_entryid);
	TRETURN NULL;
	}

	hr = session->OpenEntry (entryidlen, (LPENTRYID)sender_entryid,
	&IID_IMailUser,
	MAPI_BEST_ACCESS \| MAPI_CACHE_ONLY,
	&utype, (IUnknown**)&user);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: Failed to open cached entry. Fallback to uncached.",
	SRCNAME, __func__);
	hr = session->OpenEntry (entryidlen, (LPENTRYID)sender_entryid,
	&IID_IMailUser,
	MAPI_BEST_ACCESS,
	&utype, (IUnknown**)&user);
	}
	gpgol_release (session);

	if (FAILED (hr))
	{
	log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
	TRETURN NULL;
	}

	hr = HrGetOneProp ((LPMAPIPROP)user, PR_SMTP_ADDRESS_W, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
	TRETURN NULL;
	}

	if (PROP_TYPE (propval->ulPropTag) != PT_UNICODE)
	{
	log_debug ("%s:%s: HrGetOneProp Returns invalid type %lu\n",
	SRCNAME, __func__, PROP_TYPE (propval->ulPropTag) );
	MAPIFreeBuffer (propval);
	TRETURN NULL;
	}
	buf = wchar_to_utf8 (propval->Value.lpszW);
	MAPIFreeBuffer (propval);

	TRETURN buf;
	}

	/* Return the from address of the message as a malloced UTF-8 string.
	returns NULL if that address is not available. */
	char *
	mapi_get_from_address (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *buf;
	ULONG try_props[3] = {PidTagSenderSmtpAddress_W,
	PR_SENT_REPRESENTING_SMTP_ADDRESS_W,
	PR_SENDER_EMAIL_ADDRESS_W};

	if (!message)
	{
	TRETURN xstrdup ("[no message]"); /* Ooops. */
	}

	for (int i = 0; i < 3; i++)
	{
	/* We try to get different properties first as they contain
	the SMTP address of the sender. EMAIL address can be
	some LDAP stuff for exchange. */
	hr = HrGetOneProp ((LPMAPIPROP)message, try_props[i],
	&propval);
	if (!FAILED (hr))
	{
	break;
	}
	}
	/* This is the last result that should always work but not necessarily
	contain an SMTP Address. */
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrGetOneProp failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	if (PROP_TYPE (propval->ulPropTag) != PT_UNICODE)
	{
	log_debug ("%s:%s: HrGetOneProp Returns invalid type %lu\n",
	SRCNAME, __func__, PROP_TYPE (propval->ulPropTag) );
	MAPIFreeBuffer (propval);
	TRETURN NULL;
	}

	buf = wchar_to_utf8 (propval->Value.lpszW);
	MAPIFreeBuffer (propval);
	if (!buf)
	{
	log_error ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	TRETURN NULL;
	}

	if (strstr (buf, "/o="))
	{
	char *buf2;
	/* If both SMTP Address properties are not set
	we need to fallback to resolve the address
	through the address book */
	log_debug ("%s:%s: resolving exchange address.",
	SRCNAME, __func__);
	buf2 = resolve_ex_from_address (message);
	if (buf2)
	{
	xfree (buf);
	TRETURN buf2;
	}
	}

	TRETURN buf;
	}


	/* Return the subject of the message as a malloced UTF-8 string.
	returns a replacement string if a subject is missing. */
	char *
	mapi_get_subject (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *buf;

	if (!message)
	{
	TRETURN xstrdup ("[no message]"); /* Ooops. */
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, PR_SUBJECT_W, &propval);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrGetOneProp failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN xstrdup (_("[no subject]"));
	}

	if (PROP_TYPE (propval->ulPropTag) != PT_UNICODE)
	{
	log_debug ("%s:%s: HrGetOneProp Returns invalid type %lu\n",
	SRCNAME, __func__, PROP_TYPE (propval->ulPropTag) );
	MAPIFreeBuffer (propval);
	TRETURN xstrdup (_("[no subject]"));
	}

	buf = wchar_to_utf8 (propval->Value.lpszW);
	MAPIFreeBuffer (propval);
	if (!buf)
	{
	log_error ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	TRETURN xstrdup (_("[no subject]"));
	}

	TRETURN buf;
	}




	/* Return the message type. This function knows only about our own
	message types. Returns MSGTYPE_UNKNOWN for any MESSAGE we have
	no special support for. */
	msgtype_t
	mapi_get_message_type (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	ULONG tag;
	LPSPropValue propval = NULL;
	msgtype_t msgtype = MSGTYPE_UNKNOWN;

	if (!message)
	{
	TRETURN msgtype;
	}

	if (get_gpgolmsgclass_tag (message, &tag) )
	{
	TRETURN msgtype; /* Ooops */
	}

	hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
	if (FAILED (hr))
	{
	hr = HrGetOneProp ((LPMAPIPROP)message, PR_MESSAGE_CLASS_A, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: HrGetOneProp(PR_MESSAGE_CLASS) failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	TRETURN msgtype;
	}
	}
	else
	log_debug ("%s:%s: have override message class\n", SRCNAME, __func__);

	if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
	{
	msgtype = string_to_type (propval->Value.lpszA);
	}
	MAPIFreeBuffer (propval);
	TRETURN msgtype;
	}


	/* This function is pretty useless because IConverterSession won't
	take attachments into account. Need to write our own version. */
	int
	mapi_to_mime (LPMESSAGE message, const char *filename)
	{
	TSTART;
	HRESULT hr;
	LPCONVERTERSESSION session;
	LPSTREAM stream;

	hr = CoCreateInstance (CLSID_IConverterSession, NULL, CLSCTX_INPROC_SERVER,
	IID_IConverterSession, (void **) &session);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't create new IConverterSession object: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN -1;
	}


	hr = OpenStreamOnFile (MAPIAllocateBuffer, MAPIFreeBuffer,
	(STGM_CREATE \| STGM_READWRITE),
	(char*)filename, NULL, &stream);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't create file `%s': hr=%#lx\n",
	SRCNAME, __func__, filename, hr);
	hr = -1;
	}
	else
	{
	hr = session->MAPIToMIMEStm (message, stream, CCSF_SMTP);
	if (FAILED (hr))
	{
	log_error ("%s:%s: MAPIToMIMEStm failed: hr=%#lx",
	SRCNAME, __func__, hr);
	stream->Revert ();
	hr = -1;
	}
	else
	{
	stream->Commit (0);
	hr = 0;
	}

	gpgol_release (stream);
	}

	gpgol_release (session);
	TRETURN hr;
	}


	/* Return a binary property in a malloced buffer with its length stored
	at R_NBYTES. Returns NULL on error. */
	char *
	mapi_get_binary_prop (LPMESSAGE message, ULONG proptype, size_t *r_nbytes)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *data;

	*r_nbytes = 0;
	hr = HrGetOneProp ((LPMAPIPROP)message, proptype, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: error getting property %#lx: hr=%#lx",
	SRCNAME, __func__, proptype, hr);
	TRETURN NULL;
	}
	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_BINARY:
	/* This is a binary object but we know that it must be plain
	ASCII due to the armored format. */
	data = (char*)xmalloc (propval->Value.bin.cb + 1);
	memcpy (data, propval->Value.bin.lpb, propval->Value.bin.cb);
	data[propval->Value.bin.cb] = 0;
	*r_nbytes = propval->Value.bin.cb;
	break;

	default:
	log_debug ("%s:%s: requested property %#lx has unknown tag %#lx\n",
	SRCNAME, __func__, proptype, propval->ulPropTag);
	data = NULL;
	break;
	}
	MAPIFreeBuffer (propval);
	TRETURN data;
	}

	/* Return an integer property at R_VALUE. On error the function
	Returns -1 and sets R_VALUE to 0, on success 0 is returned. */
	int
	mapi_get_int_prop (LPMAPIPROP object, ULONG proptype, LONG *r_value)
	{
	TSTART;
	int rc = -1;
	HRESULT hr;
	LPSPropValue propval = NULL;

	*r_value = 0;
	hr = HrGetOneProp (object, proptype, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: error getting property %#lx: hr=%#lx",
	SRCNAME, __func__, proptype, hr);
	TRETURN -1;
	}
	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_LONG:
	*r_value = propval->Value.l;
	rc = 0;

	break;

	default:
	log_debug ("%s:%s: requested property %#lx has unknown tag %#lx\n",
	SRCNAME, __func__, proptype, propval->ulPropTag);
	break;
	}
	MAPIFreeBuffer (propval);
	TRETURN rc;
	}


	/* Return the attachment method for attachment OBJ. In case of error
	we TRETURN 0 which happens not to be defined. */
	static int
	get_attach_method (LPATTACH obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	int method ;

	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_METHOD, &propval);
	if (FAILED (hr))
	{
	log_error ("%s:%s: error getting attachment method: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN 0;
	}
	/* We don't bother checking whether we really get a PT_LONG ulong
	back; if not the system is seriously damaged and we can't do
	further harm by returning a possible random value. */
	method = propval->Value.l;
	MAPIFreeBuffer (propval);
	TRETURN method;
	}



	/* Return the filename from the attachment as a malloced string. The
	encoding we return will be UTF-8, however the MAPI docs declare
	that MAPI does only handle plain ANSI and thus we don't really care
	later on. In fact we would need to convert the filename back to
	wchar and use the Unicode versions of the file API. Returns NULL
	on error or if no filename is available. */
	static char *
	get_attach_filename (LPATTACH obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval;
	char *name = NULL;

	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_LONG_FILENAME, &propval);
	if (FAILED(hr))
	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_FILENAME, &propval);
	if (FAILED(hr))
	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_DISPLAY_NAME_W, &propval);
	if (FAILED(hr))
	{
	log_debug ("%s:%s: no filename property found", SRCNAME, __func__);
	TRETURN NULL;
	}

	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_UNICODE:
	name = wchar_to_utf8 (propval->Value.lpszW);
	if (!name)
	log_debug ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	break;

	case PT_STRING8:
	name = xstrdup (propval->Value.lpszA);
	break;

	default:
	log_debug ("%s:%s: proptag=%#lx not supported\n",
	SRCNAME, __func__, propval->ulPropTag);
	name = NULL;
	break;
	}
	MAPIFreeBuffer (propval);
	TRETURN name;
	}

	/* Return the content-id of the attachment OBJ or NULL if it does
	not exists. Caller must free. */
	static char *
	get_attach_content_id (LPATTACH obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *name;

	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_CONTENT_ID, &propval);
	if (FAILED (hr))
	{
	if (hr != MAPI_E_NOT_FOUND)
	log_error ("%s:%s: error getting attachment's MIME tag: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}
	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_UNICODE:
	name = wchar_to_utf8 (propval->Value.lpszW);
	if (!name)
	log_debug ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	break;

	case PT_STRING8:
	name = xstrdup (propval->Value.lpszA);
	break;

	default:
	log_debug ("%s:%s: proptag=%#lx not supported\n",
	SRCNAME, __func__, propval->ulPropTag);
	name = NULL;
	break;
	}
	MAPIFreeBuffer (propval);
	TRETURN name;
	}

	/* Return the content-type of the attachment OBJ or NULL if it does
	not exists. Caller must free. */
	static char *
	get_attach_mime_tag (LPATTACH obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	char *name;

	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_MIME_TAG_A, &propval);
	if (FAILED (hr))
	{
	if (hr != MAPI_E_NOT_FOUND)
	log_error ("%s:%s: error getting attachment's MIME tag: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}
	switch ( PROP_TYPE (propval->ulPropTag) )
	{
	case PT_UNICODE:
	name = wchar_to_utf8 (propval->Value.lpszW);
	if (!name)
	log_debug ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
	break;

	case PT_STRING8:
	name = xstrdup (propval->Value.lpszA);
	break;

	default:
	log_debug ("%s:%s: proptag=%#lx not supported\n",
	SRCNAME, __func__, propval->ulPropTag);
	name = NULL;
	break;
	}
	MAPIFreeBuffer (propval);
	TRETURN name;
	}


	/* Return the GpgOL Attach Type for attachment OBJ. Tag needs to be
	the tag of that property. */
	attachtype_t
	get_gpgolattachtype (LPATTACH obj, ULONG tag)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	attachtype_t retval;

	hr = HrGetOneProp ((LPMAPIPROP)obj, tag, &propval);
	if (FAILED (hr))
	{
	if (hr != MAPI_E_NOT_FOUND)
	log_error ("%s:%s: error getting GpgOL Attach Type: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN ATTACHTYPE_UNKNOWN;
	}
	retval = (attachtype_t)propval->Value.l;
	MAPIFreeBuffer (propval);
	TRETURN retval;
	}


	/* Gather information about attachments and TRETURN a new table of
	attachments. Caller must release the returned table.s The routine
	will TRETURN NULL in case of an error or if no attachments are
	available. With FAST set only some information gets collected. */
	mapi_attach_item_t *
	mapi_create_attach_table (LPMESSAGE message, int fast)
	{
	TSTART;
	HRESULT hr;
	SizedSPropTagArray (1L, propAttNum) = { 1L, {PR_ATTACH_NUM} };
	LPMAPITABLE mapitable;
	LPSRowSet mapirows;
	mapi_attach_item_t *table;
	unsigned int pos, n_attach;
	ULONG moss_tag;

	if (get_gpgolattachtype_tag (message, &moss_tag) )
	{
	TRETURN NULL;
	}

	/* Open the attachment table. */
	hr = message->GetAttachmentTable (0, &mapitable);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}
	memdbg_addRef (mapitable);

	hr = HrQueryAllRows (mapitable, (LPSPropTagArray)&propAttNum,
	NULL, NULL, 0, &mapirows);
	if (FAILED (hr))
	{
	log_debug ("%s:%s: HrQueryAllRows failed: hr=%#lx",
	SRCNAME, __func__, hr);
	gpgol_release (mapitable);
	TRETURN NULL;
	}
	n_attach = mapirows->cRows > 0? mapirows->cRows : 0;

	log_debug ("%s:%s: message has %u attachments\n",
	SRCNAME, __func__, n_attach);
	if (!n_attach)
	{
	FreeProws (mapirows);
	gpgol_release (mapitable);
	TRETURN NULL;
	}

	/* Allocate our own table. */
	table = (mapi_attach_item_t )xcalloc (n_attach+1, sizeof table);
	for (pos=0; pos < n_attach; pos++)
	{
	LPATTACH att;

	if (mapirows->aRow[pos].cValues < 1)
	{
	log_error ("%s:%s: invalid row at pos %d", SRCNAME, __func__, pos);
	table[pos].mapipos = -1;
	continue;
	}
	if (mapirows->aRow[pos].lpProps[0].ulPropTag != PR_ATTACH_NUM)
	{
	log_error ("%s:%s: invalid prop at pos %d", SRCNAME, __func__, pos);
	table[pos].mapipos = -1;
	continue;
	}
	table[pos].mapipos = mapirows->aRow[pos].lpProps[0].Value.l;

	hr = message->OpenAttach (table[pos].mapipos, NULL,
	MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment %d (%d): hr=%#lx",
	SRCNAME, __func__, pos, table[pos].mapipos, hr);
	table[pos].mapipos = -1;
	continue;
	}
	memdbg_addRef (att);

	table[pos].method = get_attach_method (att);
	table[pos].filename = fast? NULL : get_attach_filename (att);
	table[pos].content_type = fast? NULL : get_attach_mime_tag (att);
	table[pos].content_id = fast? NULL : get_attach_content_id (att);
	if (table[pos].content_type)
	{
	char *p = strchr (table[pos].content_type, ';');
	if (p)
	{
	*p++ = 0;
	trim_trailing_spaces (table[pos].content_type);
	while (strchr (" \t\r\n", *p))
	p++;
	trim_trailing_spaces (p);
	table[pos].content_type_parms = p;
	}
	}
	table[pos].attach_type = get_gpgolattachtype (att, moss_tag);
	gpgol_release (att);
	}
	table[0].private_mapitable = mapitable;
	FreeProws (mapirows);
	table[pos].end_of_table = 1;
	mapitable = NULL;

	if (fast)
	{
	log_debug ("%s:%s: attachment info: not shown due to fast flag\n",
	SRCNAME, __func__);
	}
	else
	{
	log_debug ("%s:%s: attachment info:\n", SRCNAME, __func__);
	for (pos=0; !table[pos].end_of_table; pos++)
	{
	log_debug ("\t%d mt=%d fname=`%s' ct=`%s' ct_parms=`%s' method:%d\n",
	table[pos].mapipos,
	table[pos].attach_type,
	anonstr (table[pos].filename), table[pos].content_type,
	table[pos].content_type_parms,
	table[pos].method);
	}
	}

	TRETURN table;
	}


	/* Release a table as created by mapi_create_attach_table. */
	void
	mapi_release_attach_table (mapi_attach_item_t *table)
	{
	TSTART;
	unsigned int pos;
	LPMAPITABLE mapitable;

	if (!table)
	{
	TRETURN;
	}

	mapitable = (LPMAPITABLE)table[0].private_mapitable;
	if (mapitable)
	gpgol_release (mapitable);
	for (pos=0; !table[pos].end_of_table; pos++)
	{
	xfree (table[pos].filename);
	xfree (table[pos].content_type);
	xfree (table[pos].content_id);
	}
	xfree (table);
	TRETURN;
	}


	/* Return an attachment as a new IStream object. Returns NULL on
	failure. If R_ATTACH is not NULL the actual attachment will not be
	released but stored at that address; the caller needs to release it
	in this case. */
	LPSTREAM
	mapi_get_attach_as_stream (LPMESSAGE message, mapi_attach_item_t *item,
	LPATTACH *r_attach)
	{
	TSTART;
	HRESULT hr;
	LPATTACH att;
	LPSTREAM stream;

	if (r_attach)
	*r_attach = NULL;

	if (!item \|\| item->end_of_table \|\| item->mapipos == -1)
	{
	TRETURN NULL;
	}

	hr = message->OpenAttach (item->mapipos, NULL, MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment at %d: hr=%#lx",
	SRCNAME, __func__, item->mapipos, hr);
	TRETURN NULL;
	}
	memdbg_addRef (att);
	if (item->method != ATTACH_BY_VALUE)
	{
	log_error ("%s:%s: attachment: method not supported", SRCNAME, __func__);
	gpgol_release (att);
	TRETURN NULL;
	}

	hr = gpgol_openProperty (att, PR_ATTACH_DATA_BIN, &IID_IStream,
	0, 0, (LPUNKNOWN*) &stream);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open data stream of attachment: hr=%#lx",
	SRCNAME, __func__, hr);
	gpgol_release (att);
	TRETURN NULL;
	}

	if (r_attach)
	*r_attach = att;
	else
	gpgol_release (att);

	TRETURN stream;
	}


	/* Return a malloced buffer with the content of the attachment. If
	R_NBYTES is not NULL the number of bytes will get stored there.
	ATT must have an attachment method of ATTACH_BY_VALUE. Returns
	NULL on error. If UNPROTECT is set and the appropriate crypto
	attribute is available, the function Returns the unprotected
	version of the atatchment. */
	static char *
	attach_to_buffer (LPATTACH att, size_t *r_nbytes)
	{
	TSTART;
	HRESULT hr;
	LPSTREAM stream;
	STATSTG statInfo;
	ULONG nread;
	char *buffer;

	hr = gpgol_openProperty (att, PR_ATTACH_DATA_BIN, &IID_IStream,
	0, 0, (LPUNKNOWN*) &stream);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open data stream of attachment: hr=%#lx",
	SRCNAME, __func__, hr);
	TRETURN NULL;
	}

	hr = stream->Stat (&statInfo, STATFLAG_NONAME);
	if ( hr != S_OK )
	{
	log_error ("%s:%s: Stat failed: hr=%#lx", SRCNAME, __func__, hr);
	gpgol_release (stream);
	TRETURN NULL;
	}

	/* Allocate one byte more so that we can terminate the string. */
	buffer = (char*)xmalloc ((size_t)statInfo.cbSize.QuadPart + 1);

	hr = stream->Read (buffer, (size_t)statInfo.cbSize.QuadPart, &nread);
	if ( hr != S_OK )
	{
	log_error ("%s:%s: Read failed: hr=%#lx", SRCNAME, __func__, hr);
	xfree (buffer);
	gpgol_release (stream);
	TRETURN NULL;
	}
	if (nread != statInfo.cbSize.QuadPart)
	{
	log_error ("%s:%s: not enough bytes returned\n", SRCNAME, __func__);
	xfree (buffer);
	buffer = NULL;
	}
	gpgol_release (stream);

	/* Make sure that the buffer is a C string. */
	if (buffer)
	buffer[nread] = 0;

	if (r_nbytes)
	*r_nbytes = nread;
	TRETURN buffer;
	}



	/* Return an attachment as a malloced buffer. The size of the buffer
	will be stored at R_NBYTES. If unprotect is true, the atatchment
	will be unprotected. Returns NULL on failure. */
	char *
	mapi_get_attach (LPMESSAGE message,
	mapi_attach_item_t item, size_t r_nbytes)
	{
	TSTART;
	HRESULT hr;
	LPATTACH att;
	char *buffer;

	if (!item \|\| item->end_of_table \|\| item->mapipos == -1)
	{
	TRETURN NULL;
	}

	hr = message->OpenAttach (item->mapipos, NULL, MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment at %d: hr=%#lx",
	SRCNAME, __func__, item->mapipos, hr);
	TRETURN NULL;
	}
	memdbg_addRef (att);
	if (item->method != ATTACH_BY_VALUE)
	{
	log_error ("%s:%s: attachment: method not supported", SRCNAME, __func__);
	gpgol_release (att);
	TRETURN NULL;
	}

	buffer = attach_to_buffer (att, r_nbytes);
	gpgol_release (att);

	TRETURN buffer;
	}


	/* Mark this attachment as the original MOSS message. We set a custom
	property as well as the hidden flag. */
	int
	mapi_mark_moss_attach (LPMESSAGE message, mapi_attach_item_t *item)
	{
	TSTART;
	int retval = -1;
	HRESULT hr;
	LPATTACH att;
	SPropValue prop;

	if (!item \|\| item->end_of_table \|\| item->mapipos == -1)
	{
	TRETURN -1;
	}

	log_debug ("%s:%s: Marking %i as MOSS attachment",
	SRCNAME, __func__, item->mapipos);

	hr = message->OpenAttach (item->mapipos, NULL, MAPI_BEST_ACCESS, &att);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't open attachment at %d: hr=%#lx",
	SRCNAME, __func__, item->mapipos, hr);
	TRETURN -1;
	}
	memdbg_addRef (att);

	if (get_gpgolattachtype_tag (message, &prop.ulPropTag) )
	goto leave;
	prop.Value.l = ATTACHTYPE_MOSS;
	hr = HrSetOneProp (att, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set %s property: hr=%#lx\n",
	SRCNAME, __func__, "GpgOL Attach Type", hr);
	TRETURN false;
	}

	prop.ulPropTag = PR_ATTACHMENT_HIDDEN;
	prop.Value.b = TRUE;
	hr = HrSetOneProp (att, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set hidden attach flag: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}


	hr = att->SaveChanges (KEEP_OPEN_READWRITE);
	if (hr)
	{
	log_error ("%s:%s: SaveChanges(attachment) failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	retval = 0;

	leave:
	gpgol_release (att);
	TRETURN retval;
	}


	/* If the hidden property has not been set on ATTACH, set it and save
	the changes. */
	int
	mapi_set_attach_hidden (LPATTACH attach)
	{
	TSTART;
	int retval = -1;
	HRESULT hr;
	LPSPropValue propval;
	SPropValue prop;

	hr = HrGetOneProp ((LPMAPIPROP)attach, PR_ATTACHMENT_HIDDEN, &propval);
	if (SUCCEEDED (hr)
	&& PROP_TYPE (propval->ulPropTag) == PT_BOOLEAN
	&& propval->Value.b)
	{
	TRETURN 0;/* Already set to hidden. */
	}

	prop.ulPropTag = PR_ATTACHMENT_HIDDEN;
	prop.Value.b = TRUE;
	hr = HrSetOneProp (attach, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set hidden attach flag: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	hr = attach->SaveChanges (KEEP_OPEN_READWRITE);
	if (hr)
	{
	log_error ("%s:%s: SaveChanges(attachment) failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	retval = 0;

	leave:
	TRETURN retval;
	}


	/* Returns true if ATTACH has the hidden flag set to true. */
	int
	mapi_test_attach_hidden (LPATTACH attach)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	int result = 0;

	hr = HrGetOneProp ((LPMAPIPROP)attach, PR_ATTACHMENT_HIDDEN, &propval);
	if (FAILED (hr))
	{
	TRETURN result; /* No. */
	}

	if (PROP_TYPE (propval->ulPropTag) == PT_BOOLEAN && propval->Value.b)
	result = 1; /* Yes. */

	MAPIFreeBuffer (propval);
	TRETURN result;
	}



	/* When sending a message we need to fake the message class so that OL
	processes it according to our needs. However, if we later try to
	get the message class from the sent message, OL still has the SMIME
	message class and tries to hide this by trying to decrypt the
	message and return the message class from the plaintext. To
	mitigate the problem we define our own msg class override
	property. */
	int
	mapi_set_gpgol_msg_class (LPMESSAGE message, const char *name)
	{
	TSTART;
	HRESULT hr;
	SPropValue prop;

	if (get_gpgolmsgclass_tag (message, &prop.ulPropTag) )
	{
	TRETURN -1;
	}
	prop.Value.lpszA = xstrdup (name);
	hr = HrSetOneProp (message, &prop);
	xfree (prop.Value.lpszA);
	if (hr)
	{
	log_error ("%s:%s: can't set %s property: hr=%#lx\n",
	SRCNAME, __func__, "GpgOL Msg Class", hr);
	TRETURN -1;
	}

	TRETURN 0;
	}


	/* Return the charset as assigned by GpgOL to an attachment. This may
	return NULL it is has not been assigned or is the standard
	(UTF-8). */
	char *
	mapi_get_gpgol_charset (LPMESSAGE obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	ULONG tag;
	char *retstr;

	if (get_gpgolcharset_tag (obj, &tag) )
	{
	TRETURN NULL; /* Error. */
	}
	hr = HrGetOneProp ((LPMAPIPROP)obj, tag, &propval);
	if (FAILED (hr))
	{
	TRETURN NULL;
	}
	if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	{
	if (!strcmp (propval->Value.lpszA, "utf-8"))
	retstr = NULL;
	else
	retstr = xstrdup (propval->Value.lpszA);
	}
	else
	retstr = NULL;

	MAPIFreeBuffer (propval);
	TRETURN retstr;
	}


	/* Set the GpgOl charset property to an attachment.
	Note that this function does not call SaveChanges. */
	int
	mapi_set_gpgol_charset (LPMESSAGE obj, const char *charset)
	{
	TSTART;
	HRESULT hr;
	SPropValue prop;
	char *p;

	/* Note that we lowercase the value and cut it to a max of 32
	characters. The latter is required to make sure that
	HrSetOneProp will always work. */
	if (get_gpgolcharset_tag (obj, &prop.ulPropTag) )
	{
	TRETURN -1;
	}
	prop.Value.lpszA = xstrdup (charset);
	for (p=prop.Value.lpszA; *p; p++)
	p = tolower ((unsigned char*)p);
	if (strlen (prop.Value.lpszA) > 32)
	prop.Value.lpszA[32] = 0;
	hr = HrSetOneProp ((LPMAPIPROP)obj, &prop);
	xfree (prop.Value.lpszA);
	if (hr)
	{
	log_error ("%s:%s: can't set %s property: hr=%#lx\n",
	SRCNAME, __func__, "GpgOL Charset", hr);
	TRETURN -1;
	}

	TRETURN 0;
	}



	/* Return GpgOL's draft info string as an allocated string. If no
	draft info is available, NULL is returned. */
	char *
	mapi_get_gpgol_draft_info (LPMESSAGE msg)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	ULONG tag;
	char *retstr;

	if (get_gpgoldraftinfo_tag (msg, &tag) )
	{
	TRETURN NULL;
	}
	hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
	if (FAILED (hr))
	{
	TRETURN NULL;
	}
	if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	retstr = xstrdup (propval->Value.lpszA);
	else
	retstr = NULL;

	MAPIFreeBuffer (propval);
	TRETURN retstr;
	}


	/* Set GpgOL's draft info string to STRING. This string is defined as:

	Character 1: 'E' = encrypt selected,
	'e' = encrypt not selected.
	'-' = don't care
	Character 2: 'S' = sign selected,
	's' = sign not selected.
	'-' = don't care
	Character 3: 'A' = Auto protocol
	'P' = OpenPGP protocol
	'X' = S/MIME protocol
	'-' = don't care

	If string is NULL, the property will get deleted.

	Note that this function does not call SaveChanges. */
	int
	mapi_set_gpgol_draft_info (LPMESSAGE message, const char *string)
	{
	TSTART;
	HRESULT hr;
	SPropValue prop;
	SPropTagArray proparray;

	if (get_gpgoldraftinfo_tag (message, &prop.ulPropTag) )
	{
	TRETURN -1;
	}
	if (string)
	{
	prop.Value.lpszA = xstrdup (string);
	hr = HrSetOneProp (message, &prop);
	xfree (prop.Value.lpszA);
	}
	else
	{
	proparray.cValues = 1;
	proparray.aulPropTag[0] = prop.ulPropTag;
	hr = message->DeleteProps (&proparray, NULL);
	}
	if (hr)
	{
	log_error ("%s:%s: can't %s %s property: hr=%#lx\n",
	SRCNAME, __func__, string?"set":"delete",
	"GpgOL Draft Info", hr);
	TRETURN -1;
	}

	TRETURN 0;
	}


	/* Return the MIME info as an allocated string. Will never return
	NULL. */
	char *
	mapi_get_mime_info (LPMESSAGE msg)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	ULONG tag;
	char *retstr;

	if (get_gpgolmimeinfo_tag (msg, &tag) )
	{
	TRETURN xstrdup ("[Error getting tag for MIME info]");
	}
	hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
	if (FAILED (hr))
	{
	TRETURN xstrdup ("");
	}
	if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	retstr = xstrdup (propval->Value.lpszA);
	else
	retstr = xstrdup ("[MIME info has an invalid type]");

	MAPIFreeBuffer (propval);
	TRETURN retstr;
	}


	/* Helper around mapi_get_gpgol_draft_info to avoid
	the string handling.
	Return values are:
	0 -> Do nothing
	1 -> Encrypt
	2 -> Sign
	3 -> Encrypt & Sign*/
	int
	get_gpgol_draft_info_flags (LPMESSAGE message)
	{
	TSTART;
	char *buf = mapi_get_gpgol_draft_info (message);
	int ret = 0;
	if (!buf)
	{
	TRETURN 0;
	}
	if (buf[0] == 'E')
	{
	ret \|= 1;
	}
	if (buf[1] == 'S')
	{
	ret \|= 2;
	}
	xfree (buf);
	TRETURN ret;
	}

	/* Sets the draft info flags. Protocol is always Auto.
	flags should be the same as defined by
	get_gpgol_draft_info_flags
	*/
	int
	set_gpgol_draft_info_flags (LPMESSAGE message, int flags)
	{
	TSTART;
	char buf[4];
	buf[3] = '\0';
	buf[2] = 'A'; /* Protocol */
	buf[1] = flags & 2 ? 'S' : 's';
	buf[0] = flags & 1 ? 'E' : 'e';

	TRETURN mapi_set_gpgol_draft_info (message, buf);
	}


	/* Helper for mapi_get_msg_content_type() */
	static int
	parse_headers_cb (void *dummy_arg,
	rfc822parse_event_t event, rfc822parse_t msg)
	{
	(void)dummy_arg;
	(void)msg;

	if (event == RFC822PARSE_T2BODY)
	{
	return 42; /* Hack to stop the parsing after having read the
	outer headers. */
	}
	return 0;
	}

	/* Parses a std::string and returns an rfc822_parse_t with
	the result. Can return NULL on error. Caller must
	free the returned context.

	r_is_wks is set to true in case of a WKS Confirmation mail.
	*/
	static
	rfc822parse_t parse_header_data (const std::string &hdrStr,
	bool &r_is_wks)
	{
	TSTART;
	rfc822parse_t msg = nullptr;

	if (hdrStr.empty())
	{
	log_error ("%s:%s: called with empty string",
	SRCNAME, __func__);
	TRETURN nullptr;
	}

	/* Read the headers into an rfc822 object. */
	msg = rfc822parse_open (parse_headers_cb, NULL);
	if (!msg)
	{
	log_error ("%s:%s: rfc822parse_open failed",
	SRCNAME, __func__);
	TRETURN nullptr;
	}

	const char *s = nullptr;
	const char *header_lines = hdrStr.c_str();
	size_t length;
	while ((s = strchr (header_lines, '\n')))
	{
	length = (s - header_lines);
	if (length && s[-1] == '\r')
	length--;

	if (!strncmp ("Wks-Phase: confirm", header_lines,
	std::max (18, (int) length)))
	{
	log_debug ("%s:%s: detected wks confirmation mail",
	SRCNAME, __func__);
	rfc822parse_close (msg);
	r_is_wks = true;
	TRETURN nullptr;
	}

	rfc822parse_insert (msg, (const unsigned char*)header_lines, length);
	header_lines = s+1;
	}
	TRETURN msg;
	}

	/* Return Content-Type of the current message. This one is taken
	directly from the rfc822 header. If R_PROTOCOL is not NULL a
	string with the protocol parameter will be stored at this address,
	if no protocol is given NULL will be stored. If R_SMTYPE is not
	NULL a string with the smime-type parameter will be stored there.
	Caller must release all returned strings. */
	char *
	mapi_get_message_content_type (LPMESSAGE message,
	char r_protocol, char r_smtype)
	{
	TSTART;
	const char *s;
	char *retstr = NULL;

	bool isWks = false;

	if (r_protocol)
	*r_protocol = NULL;
	if (r_smtype)
	*r_smtype = NULL;

	std::string hdrStr = mapi_get_header (message);
	if (hdrStr.empty())
	{

	log_debug ("%s:%s: failed to get headers. Looking at first attach",
	SRCNAME, __func__);
	hdrStr = mapi_get_first_attach_data (message);
	if (hdrStr.empty())
	{
	log_error ("%s:%s: failed to get headers. And attachment.",
	SRCNAME, __func__);
	TRETURN NULL;
	}
	}

	rfc822parse_t msg = parse_header_data (hdrStr, isWks);
	if (!msg)
	{
	if (isWks)
	{
	TRETURN xstrdup ("wks.confirmation.mail");
	}
	log_error ("%s:%s: failed to parse headers",
	SRCNAME, __func__);
	TRETURN NULL;
	}
	/* Parse the content-type field. */
	rfc822parse_field_t ctx = rfc822parse_parse_field (msg, "Content-Type", -1);
	if (ctx)
	{
	const char s1, s2;
	rfc822parse_t tnef_msg = nullptr;
	s1 = rfc822parse_query_media_type (ctx, &s2);
	if (s1)
	{
	retstr = (char*)xmalloc (strlen (s1) + 1 + strlen (s2) + 1);
	strcpy (stpcpy (stpcpy (retstr, s1), "/"), s2);

	if (!strcmp (retstr, "application/ms-tnef"))
	{
	char *attach_mime = get_first_attach_mime_tag (message);
	if (attach_mime && !strcmp (attach_mime, "multipart/signed"))
	{
	log_debug ("%s:%s: Found multipart signed ms-tnef mail.",
	SRCNAME, __func__);
	/* Let's look in the first attachment for the real
	message to figure out the real content type. */
	const auto attach_data = mapi_get_first_attach_data (message);
	tnef_msg = parse_header_data (attach_data, isWks);
	if (tnef_msg)
	{
	rfc822parse_field_t ctx2;
	ctx2 = rfc822parse_parse_field (tnef_msg,
	"Content-Type", -1);
	if (ctx2)
	{
	s1 = rfc822parse_query_media_type (ctx2, &s2);
	if (s1)
	{
	xfree (retstr);
	retstr = (char*)xmalloc (strlen (s1) + 1 +
	strlen (s2) + 1);
	strcpy (stpcpy (stpcpy (retstr, s1), "/"), s2);
	rfc822parse_release_field (ctx);
	ctx = ctx2;
	}
	else
	{
	log_error ("%s:%s: Failed to find ct in ms-tnef.",
	SRCNAME, __func__);
	rfc822parse_release_field (ctx2);
	}
	}
	}
	else
	{
	log_error ("%s:%s: Failed to parse ms-tnef.",
	SRCNAME, __func__);
	if (isWks)
	{
	xfree (retstr);
	rfc822parse_close (msg);
	TRETURN xstrdup ("wks.confirmation.mail");
	}
	}
	}
	xfree (attach_mime);
	}

	if (r_protocol)
	{
	s = rfc822parse_query_parameter (ctx, "protocol", 0);
	if (s)
	*r_protocol = xstrdup (s);
	}
	if (r_smtype)
	{
	s = rfc822parse_query_parameter (ctx, "smime-type", 0);
	if (s)
	*r_smtype = xstrdup (s);
	}
	}
	rfc822parse_release_field (ctx);
	if (tnef_msg)
	{
	rfc822parse_close (tnef_msg);
	}
	}

	rfc822parse_close (msg);
	TRETURN retstr;
	}


	/* Returns True if MESSAGE has a GpgOL Last Decrypted property with any value.
	This indicates that there should be no PR_BODY tag. */
	int
	mapi_has_last_decrypted (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval = NULL;
	ULONG tag;
	int yes = 0;

	if (get_gpgollastdecrypted_tag (message, &tag) )
	{
	TRETURN 0; /* No. */
	}
	hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
	if (FAILED (hr))
	{
	TRETURN 0; /* No. */
	}

	if (PROP_TYPE (propval->ulPropTag) == PT_BINARY)
	yes = 1;

	MAPIFreeBuffer (propval);
	TRETURN yes;
	}


	/* Helper to check whether the file name of OBJ is "smime.p7m".
	returns on true if so. */
	static int
	has_smime_filename (LPATTACH obj)
	{
	TSTART;
	HRESULT hr;
	LPSPropValue propval;
	int yes = 0;

	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_FILENAME, &propval);
	if (FAILED(hr))
	{
	hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_LONG_FILENAME, &propval);
	if (FAILED(hr))
	{
	TRETURN 0;
	}
	}

	if ( PROP_TYPE (propval->ulPropTag) == PT_UNICODE)
	{
	if (!wcscmp (propval->Value.lpszW, L"smime.p7m"))
	yes = 1;
	}
	else if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8)
	{
	if (!strcmp (propval->Value.lpszA, "smime.p7m"))
	yes = 1;
	}
	MAPIFreeBuffer (propval);
	TRETURN yes;
	}


	/* Copy the MAPI body to a PGPBODY type attachment. */
	int
	mapi_body_to_attachment (LPMESSAGE message)
	{
	TSTART;
	HRESULT hr;
	LPSTREAM instream;
	ULONG newpos;
	LPATTACH newatt = NULL;
	SPropValue prop;
	LPSTREAM outstream = NULL;
	LPUNKNOWN punk;
	char body_filename[] = PGPBODYFILENAME;

	instream = mapi_get_body_as_stream (message);
	if (!instream)
	{
	TRETURN -1;
	}

	log_debug ("%s:%s: Creating MOSS body attachment",
	SRCNAME, __func__);

	hr = message->CreateAttach (NULL, 0, &newpos, &newatt);
	if (hr)
	{
	log_error ("%s:%s: can't create attachment: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	prop.ulPropTag = PR_ATTACH_METHOD;
	prop.Value.ul = ATTACH_BY_VALUE;
	hr = HrSetOneProp ((LPMAPIPROP)newatt, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set attach method: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	/* Mark that attachment so that we know why it has been created. */
	if (get_gpgolattachtype_tag (message, &prop.ulPropTag) )
	goto leave;
	prop.Value.l = ATTACHTYPE_PGPBODY;
	hr = HrSetOneProp ((LPMAPIPROP)newatt, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set %s property: hr=%#lx\n",
	SRCNAME, __func__, "GpgOL Attach Type", hr);
	goto leave;
	}

	prop.ulPropTag = PR_ATTACHMENT_HIDDEN;
	prop.Value.b = TRUE;
	hr = HrSetOneProp ((LPMAPIPROP)newatt, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set hidden attach flag: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	prop.ulPropTag = PR_ATTACH_FILENAME_A;
	prop.Value.lpszA = body_filename;
	hr = HrSetOneProp ((LPMAPIPROP)newatt, &prop);
	if (hr)
	{
	log_error ("%s:%s: can't set attach filename: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}

	punk = (LPUNKNOWN)outstream;
	hr = gpgol_openProperty (newatt, PR_ATTACH_DATA_BIN, &IID_IStream, 0,
	MAPI_CREATE\|MAPI_MODIFY, &punk);
	if (FAILED (hr))
	{
	log_error ("%s:%s: can't create output stream: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}
	outstream = (LPSTREAM)punk;

	/* Insert a blank line so that our mime parser skips over the mail
	headers. */
	hr = outstream->Write ("\r\n", 2, NULL);
	if (hr)
	{
	log_error ("%s:%s: Write failed: hr=%#lx", SRCNAME, __func__, hr);
	goto leave;
	}

	{
	ULARGE_INTEGER cb;
	cb.QuadPart = 0xffffffffffffffffll;
	hr = instream->CopyTo (outstream, cb, NULL, NULL);
	}
	if (hr)
	{
	log_error ("%s:%s: can't copy streams: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}
	hr = outstream->Commit (0);
	if (hr)
	{
	log_error ("%s:%s: Commiting output stream failed: hr=%#lx",
	SRCNAME, __func__, hr);
	goto leave;
	}
	gpgol_release (outstream);
	outstream = NULL;
	hr = newatt->SaveChanges (0);
	if (hr)
	{
	log_error ("%s:%s: SaveChanges of the attachment failed: hr=%#lx\n",
	SRCNAME, __func__, hr);
	goto leave;
	}
	gpgol_release (newatt);
	newatt = NULL;
	hr = mapi_save_changes (message, KEEP_OPEN_READWRITE);

	leave:
	if (outstream)
	{
	outstream->Revert ();
	gpgol_release (outstream);
	}
	if (newatt)
	gpgol_release (newatt);
	gpgol_release (instream);
	TRETURN hr? -1:0;
	}

	static int
	hide_attachment_mapipos (LPMESSAGE message, int pos)
	{
	LPATTACH att = nullptr;
	HRESULT hr = message->OpenAttach (pos, nullptr,
	MAPI_BEST_ACCESS, &att);
	if (hr != S_OK)
	{
	log_error ("%s:%s: can't open attachment at %d hr=%#lx",
	SRCNAME, __func__, pos, hr);
	TRETURN -1;
	}
	memdbg_addRef (att);
	log_debug ("%s:%s: Hiding attachment %i.",
	SRCNAME, __func__, pos);
	mapi_set_attach_hidden (att);
	gpgol_release (att);
	return 0;
	}

	int
	mapi_mark_or_create_moss_attach (LPMESSAGE message, LPMESSAGE parsed_message,
	msgtype_t msgtype)
	{
	TSTART;
	int i;
	if (msgtype == MSGTYPE_UNKNOWN \|\|
	msgtype == MSGTYPE_GPGOL)
	{
	TRETURN 0;
	}

	/* First check if we already have one marked. */
	mapi_attach_item_t *table = mapi_create_attach_table (message, 0);
	int part1 = 0,
	part2 = 0;
	int have_mosstempl = 0;
	for (i = 0; table && !table[i].end_of_table; i++)
	{
	have_mosstempl \|= (table[i].attach_type == ATTACHTYPE_MOSSTEMPL);
	if (table[i].attach_type == ATTACHTYPE_PGPBODY \|\|
	table[i].attach_type == ATTACHTYPE_MOSS \|\|
	table[i].attach_type == ATTACHTYPE_MOSSTEMPL)
	{
	if (!part1)
	{
	part1 = i + 1;
	if (have_mosstempl)
	{
	/* If we have a MOSSTEMPL use that one. */
	break;
	}
	}
	else if (!part2)
	{
	/* If we have two MOSS attachments we use
	the second one if the first one is not the octet-stream. */
	if (table[part1 - 1].content_type &&
	!strcmp (table[part1 - 1].content_type, "application/octet-stream"))
	{
	/* This is rare so debug it. Happend when drafts were
	encrypted / decrypted and another client was running */
	log_debug ("%s:%s: Have two MOSS attachments but the "
	"first one is the octet stream", SRCNAME,
	__func__);
	int tmp = part1;
	part1 = i + 1;
	part2 = tmp;
	break;
	}

	part2 = i + 1;
	break;
	}
	}
	}

	if (have_mosstempl && parsed_message)
	{
	/* If we have a mosstempl. This means that we created
	this message. Sometimes we get the situation in
	sent mails that we have a mosstempl but the
	pgp version header and octet streams also
	attached in the parsed_message. We can't
	trigger a reread from the base message so
	in that case we want to hide everything
	as we rebuild the message from our MOSS.

	We don't delete here to avoid bugs where data loss
	might occur.

	See also: T4241
	*/
	log_debug ("%s:%s: Found mosstempl. Hiding all other attachments.",
	SRCNAME, __func__);
	mapi_attach_item_t *table2 = mapi_create_attach_table (parsed_message,
	0);
	for (i = 0; table2 && !table2[i].end_of_table; i++)
	{
	hide_attachment_mapipos (parsed_message, table2[i].mapipos);
	}
	if (table2)
	{
	mapi_release_attach_table (table2);
	/* GpgOL works on the OOM so we have to use
	the MOSS parts from the parsed message. */
	int parsed_part = mapi_mark_or_create_moss_attach (parsed_message,
	nullptr,
	msgtype);
	if (parsed_part)
	{
	mapi_release_attach_table (table);
	TRETURN parsed_part;
	}
	}
	}
	if (part1 \|\| part2)
	{
	/* Remark to ensure that it is hidden. As our revert
	code must unhide it so that it is not stored in winmail.dat
	but used as the mosstmpl. */
	mapi_attach_item_t *item = table - 1 + (part2 ? part2 : part1);
	hide_attachment_mapipos (message, item->mapipos);
	mapi_release_attach_table (table);

	TRETURN part2 ? part2 : part1;
	}

	if (msgtype == MSGTYPE_GPGOL_CLEAR_SIGNED \|\|
	msgtype == MSGTYPE_GPGOL_PGP_MESSAGE)
	{
	/* Inline message we need to create body attachment so that we
	are able to restore the content. */
	if (mapi_body_to_attachment (message))
	{
	log_error ("%s:%s: Failed to create body attachment.",
	SRCNAME, __func__);
	TRETURN 0;
	}
	log_debug ("%s:%s: Created body attachment. Repeating lookup.",
	SRCNAME, __func__);
	/* The position of the MOSS attach might change depending on
	the attachment count of the mail. So repeat the check to get
	the right position. */
	mapi_release_attach_table (table);
	TRETURN mapi_mark_or_create_moss_attach (message, parsed_message,
	msgtype);
	}
	if (!table)
	{
	log_debug ("%s:%s: Neither pgp inline nor an attachment table.",
	SRCNAME, __func__);
	TRETURN 0;
	}

	/* MIME Mails check for S/MIME first. */
	for (i = 0; !table[i].end_of_table; i++)
	{
	if (table[i].content_type
	&& (!strcmp (table[i].content_type, "application/pkcs7-mime")
	\|\| !strcmp (table[i].content_type,
	"application/x-pkcs7-mime"))
	&& table[i].filename
	&& !strcmp (table[i].filename, "smime.p7m"))
	break;
	}
	if (!table[i].end_of_table)
	{
	mapi_mark_moss_attach (message, table + i);
	mapi_release_attach_table (table);
	TRETURN i + 1;
	}

	/* PGP/MIME or S/MIME stuff. */
	/* Multipart/encrypted message: We expect 2 attachments.
	The first one with the version number and the second one
	with the ciphertext. As we don't know wether we are
	called the first time, we first try to find these
	attachments by looking at all attachments. Only if this
	fails we identify them by their order (i.e. the first 2
	attachments) and mark them as part1 and part2. */
	for (i = 0; !table[i].end_of_table; i++); /* Count entries */
	if (i >= 2)
	{
	int part1_idx = -1,
	part2_idx = -1;
	/* At least 2 attachments but none are marked. Thus we
	assume that this is the first time we see this
	message and we will set the mark now if we see
	appropriate content types. */
	if (table[0].content_type
	&& !strcmp (table[0].content_type,
	"application/pgp-encrypted"))
	part1_idx = 0;
	if (table[1].content_type
	&& !strcmp (table[1].content_type,
	"application/octet-stream"))
	part2_idx = 1;
	if (part1_idx != -1 && part2_idx != -1)
	{
	mapi_mark_moss_attach (message, table+part1_idx);
	mapi_mark_moss_attach (message, table+part2_idx);
	mapi_release_attach_table (table);
	TRETURN 2;
	}
	}

	if (!table[0].end_of_table && table[1].end_of_table)
	{
	/* No MOSS flag found in the table but there is only one
	attachment. Due to the message type we know that this is
	the original MOSS message. We mark this attachment as
	hidden, so that it won't get displayed. We further mark
	it as our original MOSS attachment so that after parsing
	we have a mean to find it again (see above). */
	mapi_mark_moss_attach (message, table + 0);
	mapi_release_attach_table (table);
	TRETURN 1;
	}

	mapi_release_attach_table (table);
	TRETURN 0; /* No original attachment - this should not happen. */
	}

	static std::string
	ac_get_value (const char header, const char what)
	{
	TSTART;
	if (!header \|\| !what)
	{
	STRANGEPOINT;
	TRETURN std::string();
	}

	const char *s = strstr (header, what);
	if (!s)
	{
	log_debug ("%s:%s: could not find %s in header",
	SRCNAME, __func__, what);
	TRETURN std::string();
	}
	/* As we found it we can be sure that this is not out
	of bounds. */
	s += strlen (what);

	if (*s != '=')
	{
	log_debug ("%s:%s: No equal sign after %s in header %s",
	SRCNAME, __func__, what, s);
	TRETURN std::string();
	}

	/* Move over the = sign. */
	s++;

	/* Find the sep */
	const char *s2 = strchr (s, ';');
	if (!s2)
	{
	/* No seperator found. Assume the rest is the value */
	TRETURN s;
	}

	/* From the equal to the ; is our value. */
	TRETURN std::string (s, s2 - s);
	}

	static GpgME::Data
	prepare_key_data (const std::string &d)
	{
	TSTART;
	if (d.empty())
	{
	STRANGEPOINT;
	TRETURN GpgME::Data();
	}

	/* Prepare the keydata */
	b64_state_t base64; /* The state of the Base-64 decoder. */
	b64_init (&base64);

	/* strdup and not xstrdup as we want GpgME to take over */
	char *b64decoded = strdup (d.c_str());
	size_t len = b64_decode (&base64, b64decoded, strlen(b64decoded));

	if (!len)
	{
	log_error ("%s:%s: Invalid base64 in %s", SRCNAME, __func__,
	b64decoded);
	xfree (b64decoded);
	TRETURN GpgME::Data();
	}

	auto data = GpgME::Data (b64decoded, len, false /* take ownership */);

	TRETURN data;
	}

	bool
	mapi_get_header_info (LPMESSAGE message,
	header_info_s &r_header_info)
	{
	TSTART;
	rfc822parse_t msg;
	autocrypt_s r_autocrypt;

	r_autocrypt.exists = false;

	/* Read the headers into an rfc822 object. */
	msg = rfc822parse_open (parse_headers_cb, NULL);
	if (!msg)
	{
	log_error ("%s:%s: rfc822parse_open failed",
	SRCNAME, __func__);
	TRETURN false;
	}
	const std::string hdrStr = mapi_get_header (message);
	if (hdrStr.empty())
	{

	log_error ("%s:%s: failed to get headers",
	SRCNAME, __func__);
	rfc822parse_close (msg);
	TRETURN false;
	}

	size_t length;
	const char *header_lines = hdrStr.c_str();
	const char *s;
	while ((s = strchr (header_lines, '\n')))
	{
	length = (s - header_lines);
	if (length && s[-1] == '\r')
	length--;

	rfc822parse_insert (msg, (const unsigned char*)header_lines, length);
	header_lines = s+1;
	}

	const char *ac_field = rfc822parse_get_field (msg, "Autocrypt", -1, 0);
	if (ac_field)
	{
	r_autocrypt.exists = true;
	r_autocrypt.addr = ac_get_value (ac_field, "addr");
	r_autocrypt.data = prepare_key_data (ac_get_value (ac_field, "keydata"));
	r_autocrypt.pref = ac_get_value (ac_field, "prefer-encrypt");
	}

	rfc822parse_field_t field = rfc822parse_parse_field (msg, "Content-Type",
	-1);
	if (field)
	{
	const char *boundary = rfc822parse_query_parameter (field, "boundary",
	-1);
	if (boundary)
	{
	r_header_info.boundary = boundary;
	log_dbg ("Found Boundary. '%s'", boundary);
	}
	else
	{
	log_dbg ("Failed to find top level boundary.");
	}
	rfc822parse_release_field (field);
	}
	else
	{
	log_dbg ("Failed to get content type field.");
	}

	r_header_info.acInfo = r_autocrypt;
	rfc822parse_close (msg);
	TRETURN true;
	}

	void
	mapi_delete_gpgol_tags (LPMESSAGE message)
	{
	if (!message)
	{
	STRANGEPOINT;
	return;
	}

	ULONG tag;
	if (!get_gpgolmsgclass_tag (message, &tag))
	{
	HRESULT hr;
	SPropTagArray proparray;
	proparray.cValues = 1;
	proparray.aulPropTag[0] = tag;
	hr = message->DeleteProps (&proparray, NULL);
	if (hr)
	{
	log_error ("%s:%s: deleteprops failed: hr=%#lx\n",
	SRCNAME, __func__, hr);

	}
	}
	}

	void
	mapi_set_mesage_class (LPMESSAGE message, const char *cls)
	{
	if (!message \|\| !cls)
	{
	STRANGEPOINT;
	return;
	}
	HRESULT hr;
	SPropValue prop;
	prop.ulPropTag = PR_MESSAGE_CLASS_A;
	prop.Value.lpszA = xstrdup (cls);
	hr = HrSetOneProp (message, &prop);
	xfree (prop.Value.lpszA);

	if (hr)
	{
	log_error ("%s:%s: set msg class failed: hr=%#lx\n",
	SRCNAME, __func__, hr);

	}

	hr = mapi_save_changes (message, KEEP_OPEN_READWRITE);
	if (hr)
	{
	log_error ("%s:%s: save failed: hr=%#lx\n",
	SRCNAME, __func__, hr);

	}
	}
	diff --git a/src/mapihelp.h b/src/mapihelp.h
	index beb2ab1..ece1724 100644
	--- a/src/mapihelp.h
	+++ b/src/mapihelp.h
	@@ -1,145 +1,149 @@
	/* mapihelp.h - Helper functions for MAPI
	* Copyright (C) 2005, 2007, 2008 g10 Code GmbH
	*
	* This file is part of GpgOL.
	*
	* GpgOL is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* GpgOL is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef MAPIHELP_H
	#define MAPIHELP_H

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include <oomhelp.h>

	#ifdef __cplusplus
	extern "C" {
	#endif
	/* The filename of the attachment we create as the result of sign or
	encrypt operations. */
	#define MIMEATTACHFILENAME "GpgOL_MIME_structure.txt"

	/* The name of the file we use to store the original body of PGP
	encrypted messages. Note that PGP/MIME message don't need that
	because Outlook carries them as 2 attachments. */
	#define PGPBODYFILENAME "GpgOL_original_OpenPGP_message.txt"

	void log_mapi_property (LPMESSAGE message, ULONG prop, const char *propname);
	int get_gpgololdmsgclass_tag (LPMESSAGE message, ULONG *r_tag);
	int get_gpgolattachtype_tag (LPMESSAGE message, ULONG *r_tag);
	int get_gpgolprotectiv_tag (LPMESSAGE message, ULONG *r_tag);
	int get_gpgollastdecrypted_tag (LPMESSAGE message, ULONG *r_tag);
	int get_gpgolmimeinfo_tag (LPMESSAGE message, ULONG *r_tag);
	int get_gpgolmsgclass_tag (LPMESSAGE message, ULONG *r_tag);

	int mapi_do_save_changes (LPMESSAGE message, ULONG flags, int only_del_body,
	const char dbg_file, const char dbg_func);
	#define mapi_save_changes(a,b) \
	mapi_do_save_changes ((a),(b), 0, __FILE__, __func__)
	#define mapi_delete_body_props(a,b) \
	mapi_do_save_changes ((a),(b), 1, __FILE__, __func__)


	int mapi_set_header (LPMESSAGE msg, const char name, const char val);

	int mapi_change_message_class (LPMESSAGE message, int sync_override,
	msgtype_t *r_type);
	char *mapi_get_message_class (LPMESSAGE message);
	char *mapi_get_old_message_class (LPMESSAGE message);
	char *mapi_get_sender (LPMESSAGE message);
	msgtype_t mapi_get_message_type (LPMESSAGE message);
	int mapi_to_mime (LPMESSAGE message, const char *filename);

	char mapi_get_binary_prop (LPMESSAGE message,ULONG proptype,size_t r_nbytes);
	int mapi_get_int_prop (LPMAPIPROP object, ULONG proptype, LONG *r_value);

	char *mapi_get_from_address (LPMESSAGE message);
	char *mapi_get_subject (LPMESSAGE message);

	LPSTREAM mapi_get_body_as_stream (LPMESSAGE message);
	char mapi_get_body (LPMESSAGE message, size_t r_nbytes);

	mapi_attach_item_t *mapi_create_attach_table (LPMESSAGE message, int fast);
	void mapi_release_attach_table (mapi_attach_item_t *table);
	LPSTREAM mapi_get_attach_as_stream (LPMESSAGE message,
	mapi_attach_item_t *item,
	LPATTACH *r_attach);
	char *mapi_get_attach (LPMESSAGE message,
	mapi_attach_item_t item, size_t r_nbytes);
	int mapi_mark_moss_attach (LPMESSAGE message, mapi_attach_item_t *item);

	int mapi_set_gpgol_msg_class (LPMESSAGE message, const char *name);

	char *mapi_get_gpgol_charset (LPMESSAGE obj);
	int mapi_set_gpgol_charset (LPMESSAGE obj, const char *charset);

	char *mapi_get_gpgol_draft_info (LPMESSAGE msg);
	int mapi_set_gpgol_draft_info (LPMESSAGE message, const char *string);


	int mapi_set_attach_hidden (LPATTACH attach);
	int mapi_test_attach_hidden (LPATTACH attach);

	char *mapi_get_mime_info (LPMESSAGE msg);

	char *mapi_get_message_content_type (LPMESSAGE message,
	char r_protocol, char r_smtype);

	int mapi_has_last_decrypted (LPMESSAGE message);

	attachtype_t get_gpgolattachtype (LPATTACH obj, ULONG tag);

	int get_gpgol_draft_info_flags (LPMESSAGE message);

	int set_gpgol_draft_info_flags (LPMESSAGE message, int flags);

	/* Mark crypto attachments as hidden. And mark the moss
	attachment for later use. Returns the attachments position
	(1 is the first attachment) or 0 in case no attachment was found. */
	int mapi_mark_or_create_moss_attach (LPMESSAGE base_message,
	LPMESSAGE parsed_message,
	msgtype_t msgtype);

	/* Copy the MAPI body to a PGPBODY type attachment. */
	int mapi_body_to_attachment (LPMESSAGE message);

	/* Get malloced uid of a message */
	char * mapi_get_uid (LPMESSAGE message);

	/* Remove the gpgol specific mapi tags */
	void mapi_delete_gpgol_tags (LPMESSAGE message);

	/* Explicitly change the message class */
	void mapi_set_mesage_class (LPMESSAGE message, const char *cls);

	#ifdef __cplusplus
	}
	#include <string>

	/* Parse the headers for additional useful fields.

	r_autocrypt_info: Information about the autocrypt header.
	r_header_info: Just a generic struct for other stuff.

	A return value of false indicates an error. Check the
	individual info fields "exists" values to check if
	the header exists in the message */
	bool mapi_get_header_info (LPMESSAGE message,
	header_info_s &r_header_info);
	std::string mapi_get_header (LPMESSAGE message);
	+
	+/* Set the content type of a message in transport headers.
	+ a value of null for ct removes the content type. */
	+int mapi_set_content_type (LPMESSAGE message, const char *ct);
	#endif
	#endif /MAPIHELP_H/

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