diff --git a/src/common_indep.h b/src/common_indep.h
index ec7f026..a5c04f3 100644
--- a/src/common_indep.h
+++ b/src/common_indep.h
@@ -1,400 +1,403 @@
#ifndef COMMON_INDEP_H
#define COMMON_INDEP_H
/* common_indep.h - Common, platform indepentent routines used by GpgOL
* Copyright (C) 2005, 2007, 2008 g10 Code GmbH
* Copyright (C) 2016 Intevation 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
* 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 .
*/
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include "xmalloc.h"
#ifdef HAVE_W32_SYSTEM
/* Not so independenent ;-) need this for logging HANDLE */
# include
#endif
/* The Registry key used by Gpg4win. */
#ifdef _WIN64
# define GPG4WIN_REGKEY_2 "Software\\Wow6432Node\\GNU\\GnuPG"
#else
# define GPG4WIN_REGKEY_2 "Software\\GNU\\GnuPG"
#endif
#ifdef _WIN64
# define GPG4WIN_REGKEY_3 "Software\\Wow6432Node\\Gpg4win"
#else
# define GPG4WIN_REGKEY_3 "Software\\Gpg4win"
#endif
/* Identifiers for the protocol. We use different one than those use
by gpgme. FIXME: We might want to define an unknown protocol to
non-null and define such a value also in gpgme. */
typedef enum
{
PROTOCOL_UNKNOWN = 0,
PROTOCOL_OPENPGP = 1000,
PROTOCOL_SMIME = 1001
}
protocol_t;
/* Possible options for the recipient dialog. */
enum
{
OPT_FLAG_TEXT = 2,
OPT_FLAG_FORCE = 4,
OPT_FLAG_CANCEL = 8
};
typedef enum
{
GPG_FMT_NONE = 0, /* do not encrypt attachments */
GPG_FMT_CLASSIC = 1, /* encrypt attachments without any encoding */
GPG_FMT_PGP_PEF = 2 /* use the PGP partioned encoding format (PEF) */
}
gpgol_format_t;
/* Type of a message. */
typedef enum
{
OPENPGP_NONE = 0,
OPENPGP_MSG,
OPENPGP_SIG,
OPENPGP_CLEARSIG,
OPENPGP_PUBKEY, /* Note, that this type is only partly supported */
OPENPGP_SECKEY /* Note, that this type is only partly supported */
}
openpgp_t;
/* The list of message types we support in GpgOL. */
typedef enum
{
MSGTYPE_UNKNOWN = 0,
MSGTYPE_SMIME, /* Original SMIME class. */
MSGTYPE_GPGOL,
MSGTYPE_GPGOL_MULTIPART_SIGNED,
MSGTYPE_GPGOL_MULTIPART_ENCRYPTED,
MSGTYPE_GPGOL_OPAQUE_SIGNED,
MSGTYPE_GPGOL_OPAQUE_ENCRYPTED,
MSGTYPE_GPGOL_CLEAR_SIGNED,
MSGTYPE_GPGOL_PGP_MESSAGE
}
msgtype_t;
typedef enum
{
ATTACHTYPE_UNKNOWN = 0,
ATTACHTYPE_MOSS = 1, /* The original MOSS message (ie. a
S/MIME or PGP/MIME message. */
ATTACHTYPE_FROMMOSS = 2, /* Attachment created from MOSS. */
ATTACHTYPE_MOSSTEMPL = 3, /* Attachment has been created in the
course of sending a message */
ATTACHTYPE_PGPBODY = 4, /* Attachment contains the original
PGP message body of PGP inline
encrypted messages. */
ATTACHTYPE_FROMMOSS_DEC = 5 /* A FROMMOSS attachment that has been
temporarily decrypted and needs to be
encrypted before it is written back
into storage. */
}
attachtype_t;
/* An object to collect information about one MAPI attachment. */
struct mapi_attach_item_s
{
int end_of_table; /* True if this is the last plus one entry of
the table. */
void *private_mapitable; /* Only for use by mapi_release_attach_table. */
int mapipos; /* The position which needs to be passed to
MAPI to open the attachment. -1 means that
there is no valid attachment. */
int method; /* MAPI attachment method. */
char *filename; /* Malloced filename of this attachment or NULL. */
/* Malloced string with the MIME attrib or NULL. Parameters are
stripped off thus a compare against "type/subtype" is
sufficient. */
char *content_type;
/* If not NULL the parameters of the content_type. */
const char *content_type_parms;
+ /* If not NULL the content_id */
+ char *content_id;
+
/* The attachment type from Property GpgOL Attach Type. */
attachtype_t attach_type;
};
typedef struct mapi_attach_item_s mapi_attach_item_t;
/* Passphrase callback structure. */
struct passphrase_cb_s
{
gpgme_key_t signer;
gpgme_ctx_t ctx;
char keyid[16+1];
char *user_id;
char *pass;
int opts;
int ttl; /* TTL of the passphrase. */
unsigned int decrypt_cmd:1; /* 1 = show decrypt dialog, otherwise secret key
selection. */
unsigned int hide_pwd:1;
unsigned int last_was_bad:1;
};
/* Global options - initialized to default by main.c. */
#ifdef __cplusplus
extern "C" {
#if 0
}
#endif
#endif
#ifdef __cplusplus
extern
#endif
struct
{
int enable_debug; /* Enable extra debug options. Values
larger than 1 increases the debug log
verbosity. */
int enable_smime; /* Enable S/MIME support. */
int passwd_ttl; /* Time in seconds the passphrase is stored. */
protocol_t default_protocol;/* The default protocol. */
int encrypt_default; /* Encrypt by default. */
int sign_default; /* Sign by default. */
int enc_format; /* Encryption format for attachments. */
char *default_key; /* The key we want to always encrypt to. */
int enable_default_key; /* Enable the use of DEFAULT_KEY. */
int preview_decrypt; /* Decrypt in preview window. */
int prefer_html; /* Prefer html in html/text alternatives. */
int body_as_attachment; /* Present encrypted message as attachment. */
int mime_ui; /* Only for Addin. Use the PGP/MIME ui */
int inline_pgp; /* Only for Addin. Use Inline PGP by default. */
int autoresolve; /* Autresolve keys with --locate-keys. */
/* The compatibility flags. */
struct
{
unsigned int no_msgcache:1;
unsigned int no_pgpmime:1;
unsigned int no_oom_write:1; /* Don't write using Outlooks object model. */
unsigned int no_preview_info:1; /* No preview info about PGP/MIME. */
unsigned int old_reply_hack: 1; /* See gpgmsg.cpp:decrypt. */
unsigned int auto_decrypt: 1; /* Try to decrypt when clicked. */
unsigned int no_attestation: 1; /* Don't create an attestation. */
unsigned int use_mwfmo: 1; /* Use MsgWaitForMultipleObjects. */
} compat;
/* The current git commit id. */
unsigned int git_commit;
/* The forms revision number of the binary. */
int forms_revision;
/* The stored number of the binary which showed the last announcement. */
int announce_number;
/* Disable message processing until restart. This is required to
implement message reverting as a perparation to remove GpgOL. */
int disable_gpgol;
} opt;
/* The state object used by b64_decode. */
struct b64_state_s
{
int idx;
unsigned char val;
int stop_seen;
int invalid_encoding;
};
typedef struct b64_state_s b64_state_t;
/* Bit values used for extra log file verbosity. Value 1 is reserved
to enable debug menu options. */
#define DBG_IOWORKER (1<<1)
#define DBG_IOWORKER_EXTRA (1<<2)
#define DBG_FILTER (1<<3)
#define DBG_FILTER_EXTRA (1<<4)
#define DBG_MEMORY (1<<5)
#define DBG_COMMANDS (1<<6)
#define DBG_MIME_PARSER (1<<7)
#define DBG_MIME_DATA (1<<8)
#define DBG_OOM (1<<9)
#define DBG_OOM_EXTRA (1<<10)
/* Macros to used in conditionals to enable debug output. */
#define debug_commands (opt.enable_debug & DBG_COMMANDS)
size_t qp_decode (char *buffer, size_t length, int *r_slbrk);
char *qp_encode (const char *input, size_t length, size_t* outlen);
void b64_init (b64_state_t *state);
size_t b64_decode (b64_state_t *state, char *buffer, size_t length);
char * b64_encode (const char *input, size_t length);
char *latin1_to_utf8 (const char *string);
char *mem2str (char *dest, const void *src, size_t n);
char *trim_spaces (char *string);
char *trim_trailing_spaces (char *string);
/* To avoid that a compiler optimizes certain memset calls away, these
macros may be used instead. */
#define wipememory2(_ptr,_set,_len) do { \
volatile char *_vptr=(volatile char *)(_ptr); \
size_t _vlen=(_len); \
while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
} while(0)
#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len)
#define wipestring(_ptr) do { \
volatile char *_vptr=(volatile char *)(_ptr); \
while(*_vptr) { *_vptr=0; _vptr++; } \
} while(0)
#define debug_oom (opt.enable_debug & DBG_OOM)
#define debug_oom_extra (opt.enable_debug & DBG_OOM_EXTRA)
void log_debug (const char *fmt, ...) __attribute__ ((format (printf,1,2)));
void log_error (const char *fmt, ...) __attribute__ ((format (printf,1,2)));
void log_vdebug (const char *fmt, va_list a);
void log_debug_w32 (int w32err, const char *fmt,
...) __attribute__ ((format (printf,2,3)));
void log_error_w32 (int w32err, const char *fmt,
...) __attribute__ ((format (printf,2,3)));
void log_hexdump (const void *buf, size_t buflen, const char *fmt,
...) __attribute__ ((format (printf,3,4)));
#define log_oom if (opt.enable_debug & DBG_OOM) log_debug
#define log_oom_extra if (opt.enable_debug & DBG_OOM_EXTRA) log_debug
#define log_mime_parser if (opt.enable_debug & DBG_MIME_PARSER) log_debug
#define gpgol_release(X) \
{ \
if (X && opt.enable_debug & DBG_OOM_EXTRA) \
{ \
log_debug ("%s:%s: Object: %p released ref: %lu \n", \
SRCNAME, __func__, X, X->Release()); \
} \
else if (X) \
{ \
X->Release(); \
} \
}
const char *log_srcname (const char *s);
#define SRCNAME log_srcname (__FILE__)
#define TRACEPOINT log_debug ("%s:%s:%d: tracepoint\n", \
SRCNAME, __func__, __LINE__);
const char *get_log_file (void);
void set_log_file (const char *name);
void set_default_key (const char *name);
/*-- Convenience macros. -- */
#define DIM(v) (sizeof(v)/sizeof((v)[0]))
#define DIMof(type,member) DIM(((type *)0)->member)
/*-- Macros to replace ctype ones to avoid locale problems. --*/
#define spacep(p) (*(p) == ' ' || *(p) == '\t')
#define digitp(p) (*(p) >= '0' && *(p) <= '9')
#define hexdigitp(a) (digitp (a) \
|| (*(a) >= 'A' && *(a) <= 'F') \
|| (*(a) >= 'a' && *(a) <= 'f'))
/* Note this isn't identical to a C locale isspace() without \f and
\v, but works for the purposes used here. */
#define ascii_isspace(a) ((a)==' ' || (a)=='\n' || (a)=='\r' || (a)=='\t')
/* The atoi macros assume that the buffer has only valid digits. */
#define atoi_1(p) (*(p) - '0' )
#define atoi_2(p) ((atoi_1(p) * 10) + atoi_1((p)+1))
#define atoi_4(p) ((atoi_2(p) * 100) + atoi_2((p)+2))
#define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \
*(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1))
#define xtoi_4(p) ((xtoi_2(p) * 256) + xtoi_2((p)+2))
#define tohex(n) ((n) < 10 ? ((n) + '0') : (((n) - 10) + 'A'))
#define tohex_lower(n) ((n) < 10 ? ((n) + '0') : (((n) - 10) + 'a'))
/***** Inline functions. ****/
/* Return true if LINE consists only of white space (up to and
including the LF). */
static inline int
trailing_ws_p (const char *line)
{
for ( ; *line && *line != '\n'; line++)
if (*line != ' ' && *line != '\t' && *line != '\r')
return 0;
return 1;
}
/* An strcmp variant with the compare ending at the end of B. */
static inline int
tagcmp (const char *a, const char *b)
{
return strncmp (a, b, strlen (b));
}
#ifdef HAVE_W32_SYSTEM
extern HANDLE log_mutex;
#endif
/***** Missing functions. ****/
#ifndef HAVE_STPCPY
static inline char *
_gpgol_stpcpy (char *a, const char *b)
{
while (*b)
*a++ = *b++;
*a = 0;
return a;
}
#define stpcpy(a,b) _gpgol_stpcpy ((a), (b))
#endif /*!HAVE_STPCPY*/
#ifdef _WIN64
#define SIZE_T_FORMAT "%I64u"
#else
# ifdef HAVE_W32_SYSTEM
# define SIZE_T_FORMAT "%u"
# else
# define SIZE_T_FORMAT "%lu"
# endif
#endif
/* The length of the boundary - the buffer needs to be allocated one
byte larger. */
#define BOUNDARYSIZE 20
char *generate_boundary (char *buffer);
#ifdef __cplusplus
}
#endif
#endif // COMMON_INDEP_H
diff --git a/src/mapihelp.cpp b/src/mapihelp.cpp
index 2ebe333..de325c5 100644
--- a/src/mapihelp.cpp
+++ b/src/mapihelp.cpp
@@ -1,3697 +1,3737 @@
/* 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 .
*/
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include "mymapi.h"
#include "mymapitags.h"
#include "common.h"
#include "rfc822parse.h"
#include "serpent.h"
#include "mapihelp.h"
#include "parsetlv.h"
#include "gpgolstr.h"
#include "oomhelp.h"
#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)
{
HRESULT hr;
LPSPropValue propval = NULL;
size_t keylen;
void *key;
char *buf;
if (!message)
return; /* 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);
return;
}
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) );
return;
}
MAPIFreeBuffer (propval);
}
/* Helper to create a named property. */
static ULONG
create_gpgol_tag (LPMESSAGE message, const wchar_t *name, const char *func)
{
HRESULT hr;
LPSPropTagArray proparr = NULL;
MAPINAMEID mnid, *pmnid;
GpgOLStr propname(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);
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);
return result;
}
/* Return the property tag for GpgOL Msg Class. */
int
get_gpgolmsgclass_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Msg Class", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 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)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Old Msg Class", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 0;
}
/* Return the property tag for GpgOL Attach Type. */
int
get_gpgolattachtype_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Attach Type", __func__)))
return -1;
*r_tag |= PT_LONG;
return 0;
}
/* Return the property tag for GpgOL Sig Status. */
int
get_gpgolsigstatus_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Sig Status", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 0;
}
/* Return the property tag for GpgOL Protect IV. */
int
get_gpgolprotectiv_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Protect IV", __func__)))
return -1;
*r_tag |= PT_BINARY;
return 0;
}
/* Return the property tag for GpgOL Last Decrypted. */
int
get_gpgollastdecrypted_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Last Decrypted",__func__)))
return -1;
*r_tag |= PT_BINARY;
return 0;
}
/* Return the property tag for GpgOL MIME structure. */
int
get_gpgolmimeinfo_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL MIME Info", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 0;
}
/* Return the property tag for GpgOL Charset. */
int
get_gpgolcharset_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Charset", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 0;
}
/* Return the property tag for GpgOL Draft Info. */
int
get_gpgoldraftinfo_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL Draft Info", __func__)))
return -1;
*r_tag |= PT_STRING8;
return 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)
{
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}};
GpgOLStr 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_error ("%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);
return result;
}
/* Return the property tag for GpgOL UUID Info. */
static int
get_gpgoluid_tag (LPMESSAGE message, ULONG *r_tag)
{
if (!(*r_tag = create_gpgol_tag (message, L"GpgOL UID", __func__)))
return -1;
*r_tag |= PT_UNICODE;
return 0;
}
char *
mapi_get_uid (LPDISPATCH mail)
{
/* If the UUID is not in OOM maybe we find it in mapi. */
LPMESSAGE msg = get_oom_base_message (mail);
if (!msg)
{
log_debug ("%s:%s: Failed to get message for '%p'",
SRCNAME, __func__, mail);
gpgol_release (msg);
}
ULONG tag;
if (get_gpgoluid_tag (msg, &tag))
{
log_debug ("%s:%s: Failed to get tag for '%p'",
SRCNAME, __func__, mail);
gpgol_release (msg);
return NULL;
}
LPSPropValue propval = NULL;
HRESULT hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
gpgol_release (msg);
if (hr)
{
log_debug ("%s:%s: Failed to get prop for '%p'",
SRCNAME, __func__, mail);
return 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__, mail);
}
else if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
{
ret = strdup (propval->Value.lpszA);
log_debug ("%s:%s: Fund uuid in MAPI for %p",
SRCNAME, __func__, mail);
}
MAPIFreeBuffer (propval);
return 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)
{
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);
return -1;
}
}
return 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)
return -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);
return result;
}
/* 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)
{
HRESULT hr;
ULONG tag;
LPSTREAM stream;
if (!message)
return 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 = message->OpenProperty (tag, &IID_IStream, 0, 0,
(LPUNKNOWN*)&stream);
if (!hr)
return 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 = message->OpenProperty (PR_BODY_A, &IID_IStream, 0, 0,
(LPUNKNOWN*)&stream);
if (hr)
{
log_debug ("%s:%s: OpenProperty failed: hr=%#lx", SRCNAME, __func__, hr);
return NULL;
}
return 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)
{
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 = message->OpenProperty (PR_BODY, &IID_IStream, 0, 0,
(LPUNKNOWN*)&stream);
if (hr)
{
log_debug ("%s:%s: OpenProperty failed: hr=%#lx",
SRCNAME, __func__, hr);
return NULL;
}
hr = stream->Stat (&statInfo, STATFLAG_NONAME);
if (hr)
{
log_debug ("%s:%s: Stat failed: hr=%#lx", SRCNAME, __func__, hr);
gpgol_release (stream);
return 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);
return 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);
return 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);
return 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. */
static char *
get_msgcls_from_pgp_lines (LPMESSAGE message)
{
HRESULT hr;
LPSTREAM stream;
STATSTG statInfo;
ULONG nread;
size_t nbytes;
char *body = NULL;
char *p;
char *msgcls = NULL;
ULONG tag;
int is_binary = 0;
if (!opt.mime_ui)
{
return NULL;
}
hr = 0;
if (!get_internetcharsetbody_tag (message, &tag) )
{
hr = message->OpenProperty (tag, &IID_IStream, 0, 0,
(LPUNKNOWN*)&stream);
if (!hr)
is_binary = 1;
}
else
{
log_debug ("%s:%s: Failed to get body tag.",
SRCNAME, __func__);
return NULL;
}
if (hr)
{
tag = PR_BODY;
hr = message->OpenProperty (tag, &IID_IStream, 0, 0,
(LPUNKNOWN*)&stream);
}
if (hr)
{
log_debug ("%s:%s: OpenProperty(%lx) failed: hr=%#lx",
SRCNAME, __func__, tag, hr);
return NULL;
}
hr = stream->Stat (&statInfo, STATFLAG_NONAME);
if (hr)
{
log_debug ("%s:%s: Stat failed: hr=%#lx", SRCNAME, __func__, hr);
gpgol_release (stream);
return 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);
return 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);
return NULL;
}
gpgol_release (stream);
if (!is_binary)
{
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 (g_ol_version_major < 14
&& !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))
break; /* Text before the PGP message - don't take this as a
proper message. */
}
xfree (body);
return 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);
return -1;
}
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);
return -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__);
return -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;
}
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 = att->OpenProperty (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;
}
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);
return 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);
return NULL;
}
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);
return NULL;
}
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__);
return 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;
}
/* 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);
return result;
}
/* 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)
{
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)
{
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");
}
xfree (proto);
}
else if (!strcmp (ct, "text/plain") ||
!strcmp (ct, "multipart/mixed") ||
!strcmp (ct, "multipart/alternative"))
{
/* 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);
}
xfree (ct);
}
else
log_debug ("%s:%s: message has no content type", SRCNAME, __func__);
return 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)
{
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
{
/* 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)
newvalue = xstrdup ("IPM.Note.GpgOL");
return 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)
{
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");
}
xfree (proto);
xfree (ct);
}
else
log_debug ("%s:%s: message has no content type", SRCNAME, __func__);
return 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)
{
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.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");
return newvalue;
}
/* 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. Return true if the message was
changed. */
int
mapi_change_message_class (LPMESSAGE message, int sync_override)
{
HRESULT hr;
ULONG tag;
SPropValue prop;
LPSPropValue propval = NULL;
char *newvalue = NULL;
int need_save = 0;
int have_override = 0;
if (!message)
return 0; /* No message: Nop. */
if (get_gpgolmsgclass_tag (message, &tag) )
return 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);
return 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"))
{
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. */
newvalue = (char*)xmalloc (strlen (s) + 1);
strcpy (stpcpy (newvalue, "IPM.Note.GpgOL"), s+14);
}
else if (opt.enable_smime &&
!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) && PROP_TYPE (propval2->ulPropTag) == PT_STRING8
&& propval2->Value.lpszA && strcmp (propval2->Value.lpszA, s))
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 (!newvalue)
{
/* We use our Sig-Status property to mark messages which passed
this function. This helps us to avoid later tests. */
if (!mapi_has_sig_status (message))
{
mapi_set_sig_status (message, "#");
need_save = 1;
}
}
else
{
/* 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);
return 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);
return 0;
}
need_save = 1;
}
MAPIFreeBuffer (propval);
if (need_save)
{
if (mapi_save_changes (message, KEEP_OPEN_READWRITE|FORCE_SAVE))
return 0;
}
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
char *retstr;
if (!message)
return 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);
return 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);
return 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)
{
HRESULT hr;
ULONG tag;
LPSPropValue propval = NULL;
char *retstr;
if (!message)
return NULL;
if (get_gpgololdmsgclass_tag (message, &tag))
return NULL;
hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
if (FAILED (hr))
{
log_error ("%s:%s: HrGetOneProp() failed: hr=%#lx\n",
SRCNAME, __func__, hr);
return NULL;
}
if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
retstr = xstrdup (propval->Value.lpszA);
else
retstr = NULL;
MAPIFreeBuffer (propval);
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
char *buf;
char *p0, *p;
if (!message)
return 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);
return 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);
return NULL;
}
buf = wchar_to_utf8 (propval->Value.lpszW);
MAPIFreeBuffer (propval);
if (!buf)
{
log_error ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
return 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__, buf);
xfree (buf);
return 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__, 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__, buf);
return buf;
}
static char *
resolve_ex_from_address (LPMESSAGE message)
{
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__);
return NULL;
}
sender_entryid = mapi_get_binary_prop (message, PR_SENDER_ENTRYID,
&entryidlen);
if (!sender_entryid)
{
log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
return NULL;
}
session = get_oom_mapi_session ();
if (!session)
{
log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
xfree (sender_entryid);
return 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__);
return NULL;
}
hr = HrGetOneProp ((LPMAPIPROP)user, PR_SMTP_ADDRESS_W, &propval);
if (FAILED (hr))
{
log_error ("%s:%s: Error: %i", SRCNAME, __func__, __LINE__);
return 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);
return NULL;
}
buf = wchar_to_utf8 (propval->Value.lpszW);
MAPIFreeBuffer (propval);
return 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)
{
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)
return 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);
return 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);
return NULL;
}
buf = wchar_to_utf8 (propval->Value.lpszW);
MAPIFreeBuffer (propval);
if (!buf)
{
log_error ("%s:%s: error converting to utf8\n", SRCNAME, __func__);
return 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);
return buf2;
}
}
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
char *buf;
if (!message)
return 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);
return 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);
return 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__);
return xstrdup (_("[no subject]"));
}
return 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)
{
HRESULT hr;
ULONG tag;
LPSPropValue propval = NULL;
msgtype_t msgtype = MSGTYPE_UNKNOWN;
if (!message)
return msgtype;
if (get_gpgolmsgclass_tag (message, &tag) )
return 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);
return msgtype;
}
}
else
log_debug ("%s:%s: have override message class\n", SRCNAME, __func__);
if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8 )
{
const char *s = propval->Value.lpszA;
if (!strncmp (s, "IPM.Note.GpgOL", 14) && (!s[14] || s[14] =='.'))
{
s += 14;
if (!*s)
msgtype = MSGTYPE_GPGOL;
else if (!strcmp (s, ".MultipartSigned"))
msgtype = MSGTYPE_GPGOL_MULTIPART_SIGNED;
else if (!strcmp (s, ".MultipartEncrypted"))
msgtype = MSGTYPE_GPGOL_MULTIPART_ENCRYPTED;
else if (!strcmp (s, ".OpaqueSigned"))
msgtype = MSGTYPE_GPGOL_OPAQUE_SIGNED;
else if (!strcmp (s, ".OpaqueEncrypted"))
msgtype = MSGTYPE_GPGOL_OPAQUE_ENCRYPTED;
else if (!strcmp (s, ".ClearSigned"))
msgtype = MSGTYPE_GPGOL_CLEAR_SIGNED;
else if (!strcmp (s, ".PGPMessage"))
msgtype = MSGTYPE_GPGOL_PGP_MESSAGE;
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] =='.'))
msgtype = MSGTYPE_SMIME;
}
MAPIFreeBuffer (propval);
return 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)
{
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);
return -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);
return 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)
{
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);
return 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);
return 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)
{
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);
return -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);
return rc;
}
/* Return the attachment method for attachment OBJ. In case of error
we return 0 which happens not to be defined. */
static int
get_attach_method (LPATTACH obj)
{
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);
return 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);
return 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)
{
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))
{
log_debug ("%s:%s: no filename property found", SRCNAME, __func__);
return 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);
return 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)
+{
+ 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);
+ return 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);
+ return 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)
{
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);
return 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);
return 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)
{
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);
return ATTACHTYPE_UNKNOWN;
}
retval = (attachtype_t)propval->Value.l;
MAPIFreeBuffer (propval);
return retval;
}
/* Gather information about attachments and return a new table of
attachments. Caller must release the returned table.s The routine
will return 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)
{
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) )
return NULL;
/* Open the attachment table. */
hr = message->GetAttachmentTable (0, &mapitable);
if (FAILED (hr))
{
log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
SRCNAME, __func__, hr);
return NULL;
}
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);
return 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);
return 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;
}
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'\n",
table[pos].mapipos,
table[pos].attach_type,
table[pos].filename, table[pos].content_type,
table[pos].content_type_parms);
}
}
return table;
}
/* Release a table as created by mapi_create_attach_table. */
void
mapi_release_attach_table (mapi_attach_item_t *table)
{
unsigned int pos;
LPMAPITABLE mapitable;
if (!table)
return;
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);
}
/* 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)
{
HRESULT hr;
LPATTACH att;
LPSTREAM stream;
if (r_attach)
*r_attach = NULL;
if (!item || item->end_of_table || item->mapipos == -1)
return 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);
return NULL;
}
if (item->method != ATTACH_BY_VALUE)
{
log_error ("%s:%s: attachment: method not supported", SRCNAME, __func__);
gpgol_release (att);
return NULL;
}
hr = att->OpenProperty (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);
return NULL;
}
if (r_attach)
*r_attach = att;
else
gpgol_release (att);
return 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, int unprotect,
int *r_was_protected)
{
HRESULT hr;
LPSTREAM stream;
STATSTG statInfo;
ULONG nread;
char *buffer;
symenc_t symenc = NULL;
if (r_was_protected)
*r_was_protected = 0;
if (unprotect)
{
ULONG tag;
char *iv;
size_t ivlen;
if (!get_gpgolprotectiv_tag ((LPMESSAGE)att, &tag)
&& (iv = mapi_get_binary_prop ((LPMESSAGE)att, tag, &ivlen)))
{
symenc = symenc_open (get_128bit_session_key (), 16, iv, ivlen);
xfree (iv);
if (!symenc)
log_error ("%s:%s: can't open encryption context",
SRCNAME, __func__);
}
}
hr = att->OpenProperty (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);
return 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);
return 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);
return NULL;
}
if (nread != statInfo.cbSize.QuadPart)
{
log_error ("%s:%s: not enough bytes returned\n", SRCNAME, __func__);
xfree (buffer);
buffer = NULL;
}
gpgol_release (stream);
if (buffer && symenc)
{
symenc_cfb_decrypt (symenc, buffer, buffer, nread);
if (nread < 16 || memcmp (buffer, "GpgOL attachment", 16))
{
xfree (buffer);
buffer = native_to_utf8
(_("[The content of this message is not visible because it has "
"been decrypted by another Outlook session. Use the "
"\"decrypt/verify\" command to make it visible]"));
nread = strlen (buffer);
}
else
{
memmove (buffer, buffer+16, nread-16);
nread -= 16;
if (r_was_protected)
*r_was_protected = 1;
}
}
/* Make sure that the buffer is a C string. */
if (buffer)
buffer[nread] = 0;
symenc_close (symenc);
if (r_nbytes)
*r_nbytes = nread;
return 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, int unprotect,
mapi_attach_item_t *item, size_t *r_nbytes)
{
HRESULT hr;
LPATTACH att;
char *buffer;
if (!item || item->end_of_table || item->mapipos == -1)
return 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);
return NULL;
}
if (item->method != ATTACH_BY_VALUE)
{
log_error ("%s:%s: attachment: method not supported", SRCNAME, __func__);
gpgol_release (att);
return NULL;
}
buffer = attach_to_buffer (att, r_nbytes, unprotect, NULL);
gpgol_release (att);
return 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)
{
int retval = -1;
HRESULT hr;
LPATTACH att;
SPropValue prop;
if (!item || item->end_of_table || item->mapipos == -1)
return -1;
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);
return -1;
}
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);
return 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);
return retval;
}
/* If the hidden property has not been set on ATTACH, set it and save
the changes. */
int
mapi_set_attach_hidden (LPATTACH attach)
{
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)
return 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:
return retval;
}
/* Returns true if ATTACH has the hidden flag set to true. */
int
mapi_test_attach_hidden (LPATTACH attach)
{
HRESULT hr;
LPSPropValue propval = NULL;
int result = 0;
hr = HrGetOneProp ((LPMAPIPROP)attach, PR_ATTACHMENT_HIDDEN, &propval);
if (FAILED (hr))
return result; /* No. */
if (PROP_TYPE (propval->ulPropTag) == PT_BOOLEAN && propval->Value.b)
result = 1; /* Yes. */
MAPIFreeBuffer (propval);
return result;
}
/* Returns True if MESSAGE has the GpgOL Sig Status property. */
int
mapi_has_sig_status (LPMESSAGE msg)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
int yes;
if (get_gpgolsigstatus_tag (msg, &tag) )
return 0; /* Error: Assume No. */
hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
if (FAILED (hr))
return 0; /* No. */
if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
yes = 1;
else
yes = 0;
MAPIFreeBuffer (propval);
return yes;
}
/* Returns True if MESSAGE has a GpgOL Sig Status property and that it
is not set to unchecked. */
int
mapi_test_sig_status (LPMESSAGE msg)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
int yes;
if (get_gpgolsigstatus_tag (msg, &tag) )
return 0; /* Error: Assume No. */
hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
if (FAILED (hr))
return 0; /* No. */
/* We return False if we have an unknown signature status (?) or the
message has been sent by us and not yet checked (@). */
if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
yes = !(propval->Value.lpszA && (!strcmp (propval->Value.lpszA, "?")
|| !strcmp (propval->Value.lpszA, "@")));
else
yes = 0;
MAPIFreeBuffer (propval);
return yes;
}
/* Return the signature status as an allocated string. Will never
return NULL. */
char *
mapi_get_sig_status (LPMESSAGE msg)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
char *retstr;
if (get_gpgolsigstatus_tag (msg, &tag) )
return xstrdup ("[Error getting tag for sig status]");
hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
if (FAILED (hr))
return xstrdup ("");
if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
retstr = xstrdup (propval->Value.lpszA);
else
retstr = xstrdup ("[Sig status has an invalid type]");
MAPIFreeBuffer (propval);
return retstr;
}
/* Set the signature status property to STATUS_STRING. There are a
few special values:
"#" The message is not of interest to us.
"@" The message has been created and signed or encrypted by us.
"?" The signature status has not been checked.
"!" The signature verified okay
"~" The signature was not fully verified.
"-" The signature is bad
Note that this function does not call SaveChanges. */
int
mapi_set_sig_status (LPMESSAGE message, const char *status_string)
{
HRESULT hr;
SPropValue prop;
if (get_gpgolsigstatus_tag (message, &prop.ulPropTag) )
return -1;
prop.Value.lpszA = xstrdup (status_string);
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 Sig Status", hr);
return -1;
}
return 0;
}
/* 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)
{
HRESULT hr;
SPropValue prop;
if (get_gpgolmsgclass_tag (message, &prop.ulPropTag) )
return -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);
return -1;
}
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
char *retstr;
if (get_gpgolcharset_tag (obj, &tag) )
return NULL; /* Error. */
hr = HrGetOneProp ((LPMAPIPROP)obj, tag, &propval);
if (FAILED (hr))
return 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);
return 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)
{
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) )
return -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);
return -1;
}
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
char *retstr;
if (get_gpgoldraftinfo_tag (msg, &tag) )
return NULL;
hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
if (FAILED (hr))
return NULL;
if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
retstr = xstrdup (propval->Value.lpszA);
else
retstr = NULL;
MAPIFreeBuffer (propval);
return 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)
{
HRESULT hr;
SPropValue prop;
SPropTagArray proparray;
if (get_gpgoldraftinfo_tag (message, &prop.ulPropTag) )
return -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);
return -1;
}
return 0;
}
/* Return the MIME info as an allocated string. Will never return
NULL. */
char *
mapi_get_mime_info (LPMESSAGE msg)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
char *retstr;
if (get_gpgolmimeinfo_tag (msg, &tag) )
return xstrdup ("[Error getting tag for MIME info]");
hr = HrGetOneProp ((LPMAPIPROP)msg, tag, &propval);
if (FAILED (hr))
return xstrdup ("");
if (PROP_TYPE (propval->ulPropTag) == PT_STRING8)
retstr = xstrdup (propval->Value.lpszA);
else
retstr = xstrdup ("[MIME info has an invalid type]");
MAPIFreeBuffer (propval);
return 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)
{
char *buf = mapi_get_gpgol_draft_info (message);
int ret = 0;
if (!buf)
{
return 0;
}
if (buf[0] == 'E')
{
ret |= 1;
}
if (buf[1] == 'S')
{
ret |= 2;
}
xfree (buf);
return 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)
{
char buf[4];
buf[3] = '\0';
buf[2] = 'A'; /* Protocol */
buf[1] = flags & 2 ? 'S' : 's';
buf[0] = flags & 1 ? 'E' : 'e';
return mapi_set_gpgol_draft_info (message, buf);
}
/* Helper for mapi_get_msg_content_type() */
static int
get_message_content_type_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;
}
/* 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
rfc822parse_t msg;
const char *header_lines, *s;
rfc822parse_field_t ctx;
size_t length;
char *retstr = NULL;
if (r_protocol)
*r_protocol = NULL;
if (r_smtype)
*r_smtype = NULL;
hr = HrGetOneProp ((LPMAPIPROP)message,
PR_TRANSPORT_MESSAGE_HEADERS_A, &propval);
if (FAILED (hr))
{
log_error ("%s:%s: error getting the headers lines: hr=%#lx",
SRCNAME, __func__, hr);
return NULL;
}
if (PROP_TYPE (propval->ulPropTag) != PT_STRING8)
{
/* As per rfc822, header lines must be plain ascii, so no need
to cope with unicode etc. */
log_error ("%s:%s: proptag=%#lx not supported\n",
SRCNAME, __func__, propval->ulPropTag);
MAPIFreeBuffer (propval);
return NULL;
}
header_lines = propval->Value.lpszA;
/* Read the headers into an rfc822 object. */
msg = rfc822parse_open (get_message_content_type_cb, NULL);
if (!msg)
{
log_error ("%s:%s: rfc822parse_open failed\n", SRCNAME, __func__);
MAPIFreeBuffer (propval);
return NULL;
}
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;
}
/* Parse the content-type field. */
ctx = rfc822parse_parse_field (msg, "Content-Type", -1);
if (ctx)
{
const char *s1, *s2;
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 (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);
}
rfc822parse_close (msg);
MAPIFreeBuffer (propval);
return 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)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
int yes = 0;
if (get_gpgollastdecrypted_tag (message, &tag) )
return 0; /* No. */
hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
if (FAILED (hr))
return 0; /* No. */
if (PROP_TYPE (propval->ulPropTag) == PT_BINARY)
yes = 1;
MAPIFreeBuffer (propval);
return yes;
}
/* Returns True if MESSAGE has a GpgOL Last Decrypted property and
that matches the current session. */
int
mapi_test_last_decrypted (LPMESSAGE message)
{
HRESULT hr;
LPSPropValue propval = NULL;
ULONG tag;
int yes = 0;
if (get_gpgollastdecrypted_tag (message, &tag) )
goto leave; /* No. */
hr = HrGetOneProp ((LPMAPIPROP)message, tag, &propval);
if (FAILED (hr))
goto leave; /* No. */
if (PROP_TYPE (propval->ulPropTag) == PT_BINARY
&& propval->Value.bin.cb == 8
&& !memcmp (propval->Value.bin.lpb, get_64bit_session_marker (), 8) )
yes = 1;
MAPIFreeBuffer (propval);
leave:
log_debug ("%s:%s: message decrypted during this session: %s\n",
SRCNAME, __func__, yes?"yes":"no");
return yes;
}
/* Helper for mapi_get_gpgol_body_attachment. */
static int
has_gpgol_body_name (LPATTACH obj)
{
HRESULT hr;
LPSPropValue propval;
int yes = 0;
hr = HrGetOneProp ((LPMAPIPROP)obj, PR_ATTACH_FILENAME, &propval);
if (FAILED(hr))
return 0;
if ( PROP_TYPE (propval->ulPropTag) == PT_UNICODE)
{
if (!wcscmp (propval->Value.lpszW, L"gpgol000.txt"))
yes = 1;
else if (!wcscmp (propval->Value.lpszW, L"gpgol000.htm"))
yes = 2;
}
else if ( PROP_TYPE (propval->ulPropTag) == PT_STRING8)
{
if (!strcmp (propval->Value.lpszA, "gpgol000.txt"))
yes = 1;
else if (!strcmp (propval->Value.lpszA, "gpgol000.htm"))
yes = 2;
}
MAPIFreeBuffer (propval);
return 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)
{
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))
return 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);
return yes;
}
/* Return the content of the body attachment of MESSAGE. The body
attachment is a hidden attachment created by us for later display.
If R_NBYTES is not NULL the number of bytes in the returned buffer
is stored there. If R_ISHTML is not NULL a flag indicating whether
the HTML is html formatted is stored there. If R_PROTECTED is not
NULL a flag indicating whether the message was protected is stored
there. If no body attachment can be found or on any other error an
error codes is returned and NULL is stored at R_BODY. Caller must
free the returned string. If NULL is passed for R_BODY, the
function will only test whether a body attachment is available and
return an error code if not. R_IS_HTML and R_PROTECTED are not
defined in this case. */
int
mapi_get_gpgol_body_attachment (LPMESSAGE message,
char **r_body, size_t *r_nbytes,
int *r_ishtml, int *r_protected)
{
HRESULT hr;
SizedSPropTagArray (1L, propAttNum) = { 1L, {PR_ATTACH_NUM} };
LPMAPITABLE mapitable;
LPSRowSet mapirows;
unsigned int pos, n_attach;
ULONG moss_tag;
char *body = NULL;
int bodytype;
int found = 0;
if (r_body)
*r_body = NULL;
if (r_ishtml)
*r_ishtml = 0;
if (r_protected)
*r_protected = 0;
if (get_gpgolattachtype_tag (message, &moss_tag) )
return -1;
hr = message->GetAttachmentTable (0, &mapitable);
if (FAILED (hr))
{
log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
SRCNAME, __func__, hr);
return -1;
}
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);
return -1;
}
n_attach = mapirows->cRows > 0? mapirows->cRows : 0;
if (!n_attach)
{
FreeProws (mapirows);
gpgol_release (mapitable);
log_debug ("%s:%s: No attachments at all", SRCNAME, __func__);
return -1;
}
log_debug ("%s:%s: message has %u attachments\n",
SRCNAME, __func__, n_attach);
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);
continue;
}
if (mapirows->aRow[pos].lpProps[0].ulPropTag != PR_ATTACH_NUM)
{
log_error ("%s:%s: invalid prop at pos %d", SRCNAME, __func__, pos);
continue;
}
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);
continue;
}
if ((bodytype=has_gpgol_body_name (att))
&& get_gpgolattachtype (att, moss_tag) == ATTACHTYPE_FROMMOSS)
{
found = 1;
if (!r_body)
; /* Body content has not been requested. */
else if (opt.body_as_attachment && !mapi_test_attach_hidden (att))
{
/* The body is to be shown as an attachment. */
body = native_to_utf8
(bodytype == 2
? ("[Open the attachment \"gpgol000.htm\""
" to view the message.]")
: ("[Open the attachment \"gpgol000.txt\""
" to view the message.]"));
found = 1;
}
else
{
char *charset;
if (get_attach_method (att) == ATTACH_BY_VALUE)
body = attach_to_buffer (att, r_nbytes, 1, r_protected);
if (body && (charset = mapi_get_gpgol_charset ((LPMESSAGE)att)))
{
/* We only support transcoding from Latin-1 for now. */
if (strcmp (charset, "iso-8859-1")
&& !strcmp (charset, "latin-1"))
log_debug ("%s:%s: Using Latin-1 instead of %s",
SRCNAME, __func__, charset);
xfree (charset);
charset = latin1_to_utf8 (body);
xfree (body);
body = charset;
}
}
gpgol_release (att);
if (r_ishtml)
*r_ishtml = (bodytype == 2);
break;
}
gpgol_release (att);
}
FreeProws (mapirows);
gpgol_release (mapitable);
if (!found)
{
log_error ("%s:%s: no suitable body attachment found", SRCNAME,__func__);
if (r_body)
*r_body = native_to_utf8
(_("[The content of this message is not visible"
" due to an processing error in GpgOL.]"));
return -1;
}
if (r_body)
*r_body = body;
else
xfree (body); /* (Should not happen.) */
return 0;
}
/* Delete a possible body atatchment. Returns true if an atatchment
has been deleted. */
int
mapi_delete_gpgol_body_attachment (LPMESSAGE message)
{
HRESULT hr;
SizedSPropTagArray (1L, propAttNum) = { 1L, {PR_ATTACH_NUM} };
LPMAPITABLE mapitable;
LPSRowSet mapirows;
unsigned int pos, n_attach;
ULONG moss_tag;
int found = 0;
if (get_gpgolattachtype_tag (message, &moss_tag) )
return 0;
hr = message->GetAttachmentTable (0, &mapitable);
if (FAILED (hr))
{
log_debug ("%s:%s: GetAttachmentTable failed: hr=%#lx",
SRCNAME, __func__, hr);
return 0;
}
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);
return 0;
}
n_attach = mapirows->cRows > 0? mapirows->cRows : 0;
if (!n_attach)
{
FreeProws (mapirows);
gpgol_release (mapitable);
return 0; /* No Attachments. */
}
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);
continue;
}
if (mapirows->aRow[pos].lpProps[0].ulPropTag != PR_ATTACH_NUM)
{
log_error ("%s:%s: invalid prop at pos %d", SRCNAME, __func__, pos);
continue;
}
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);
continue;
}
if (has_gpgol_body_name (att)
&& get_gpgolattachtype (att, moss_tag) == ATTACHTYPE_FROMMOSS)
{
gpgol_release (att);
hr = message->DeleteAttach (mapirows->aRow[pos].lpProps[0].Value.l,
0, NULL, 0);
if (hr)
log_error ("%s:%s: DeleteAttach failed: hr=%#lx\n",
SRCNAME, __func__, hr);
else
{
log_debug ("%s:%s: body attachment deleted\n",
SRCNAME, __func__);
found = 1;
}
break;
}
gpgol_release (att);
}
FreeProws (mapirows);
gpgol_release (mapitable);
return found;
}
/* Copy the attachment ITEM of the message MESSAGE verbatim to the
PR_BODY property. Returns 0 on success. This function does not
call SaveChanges. */
int
mapi_attachment_to_body (LPMESSAGE message, mapi_attach_item_t *item)
{
int result = -1;
HRESULT hr;
LPATTACH att = NULL;
LPSTREAM instream = NULL;
LPSTREAM outstream = NULL;
LPUNKNOWN punk;
if (!message || !item || item->end_of_table || item->mapipos == -1)
return -1; /* Error. */
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);
goto leave;
}
if (item->method != ATTACH_BY_VALUE)
{
log_error ("%s:%s: attachment: method not supported", SRCNAME, __func__);
goto leave;
}
hr = att->OpenProperty (PR_ATTACH_DATA_BIN, &IID_IStream,
0, 0, (LPUNKNOWN*) &instream);
if (FAILED (hr))
{
log_error ("%s:%s: can't open data stream of attachment: hr=%#lx",
SRCNAME, __func__, hr);
goto leave;
}
punk = (LPUNKNOWN)outstream;
hr = message->OpenProperty (PR_BODY_A, &IID_IStream, 0,
MAPI_CREATE|MAPI_MODIFY, &punk);
if (FAILED (hr))
{
log_error ("%s:%s: can't open body stream for update: hr=%#lx",
SRCNAME, __func__, hr);
goto leave;
}
outstream = (LPSTREAM)punk;
{
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;
}
result = 0;
leave:
if (outstream)
{
if (result)
outstream->Revert ();
gpgol_release (outstream);
}
if (instream)
gpgol_release (instream);
if (att)
gpgol_release (att);
return result;
}
/* Copy the MAPI body to a PGPBODY type attachment. */
int
mapi_body_to_attachment (LPMESSAGE message)
{
HRESULT hr;
LPSTREAM instream;
ULONG newpos;
LPATTACH newatt = NULL;
SPropValue prop;
LPSTREAM outstream = NULL;
LPUNKNOWN punk;
GpgOLStr body_filename (PGPBODYFILENAME);
instream = mapi_get_body_as_stream (message);
if (!instream)
return -1;
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 = newatt->OpenProperty (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);
return hr? -1:0;
}
int
mapi_mark_or_create_moss_attach (LPMESSAGE message, msgtype_t msgtype)
{
int i;
if (msgtype == MSGTYPE_UNKNOWN ||
msgtype == MSGTYPE_GPGOL)
{
return 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;
for (i = 0; table && !table[i].end_of_table; i++)
{
if (table[i].attach_type == ATTACHTYPE_PGPBODY ||
table[i].attach_type == ATTACHTYPE_MOSS ||
table[i].attach_type == ATTACHTYPE_MOSSTEMPL)
{
if (!part1)
{
part1 = i + 1;
}
else if (!part2)
{
/* If we have two MOSS attachments we use
the second one. */
part2 = i + 1;
break;
}
}
}
if (part1 || part2)
{
/* Found existing moss attachment */
mapi_release_attach_table (table);
/* 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);
LPATTACH att;
if (message->OpenAttach (item->mapipos, NULL, MAPI_BEST_ACCESS, &att) != S_OK)
{
log_error ("%s:%s: can't open attachment at %d",
SRCNAME, __func__, item->mapipos);
return -1;
}
if (!mapi_test_attach_hidden (att))
{
mapi_set_attach_hidden (att);
}
gpgol_release (att);
if (part2)
return part2;
return 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__);
return 0;
}
return 1;
}
if (!table)
{
log_debug ("%s:%s: Neither pgp inline nor an attachment table.",
SRCNAME, __func__);
return 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);
return 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);
return 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);
return 1;
}
mapi_release_attach_table (table);
return 0; /* No original attachment - this should not happen. */
}