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item-events.cpp
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item-events.cpp
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/* item-events.cpp - GpgolItemEvents implementation
* Copyright (C) 2007 g10 Code GmbH
*
* This file is part of GpgOL.
*
* GpgOL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* GpgOL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#error not used because it requires an ECF
#ifdef HAVE_CONFIG_H
#include
<config.h>
#endif
#include
<windows.h>
#include
"mymapi.h"
#include
"mymapitags.h"
#include
"myexchext.h"
#include
"common.h"
#include
"olflange-def.h"
#include
"olflange.h"
#include
"message.h"
#include
"mapihelp.h"
#include
"display.h"
#include
"item-events.h"
#define TRACEPOINT() do { log_debug ("%s:%s:%d: tracepoint\n", \
SRCNAME, __func__, __LINE__); \
} while (0)
/* Wrapper around UlRelease with error checking. */
static
void
ul_release
(
LPVOID
punk
,
const
char
*
func
,
int
lnr
)
{
ULONG
res
;
if
(
!
punk
)
return
;
res
=
UlRelease
(
punk
);
if
(
opt
.
enable_debug
&
DBG_MEMORY
)
log_debug
(
"%s:%s:%d: UlRelease(%p) had %lu references
\n
"
,
SRCNAME
,
func
,
lnr
,
punk
,
res
);
}
/* Our constructor. */
GpgolItemEvents
::
GpgolItemEvents
(
GpgolExt
*
pParentInterface
)
{
m_pExchExt
=
pParentInterface
;
m_ref
=
0
;
m_processed
=
false
;
m_wasencrypted
=
false
;
}
/* The QueryInterfac. */
STDMETHODIMP
GpgolItemEvents
::
QueryInterface
(
REFIID
riid
,
LPVOID
FAR
*
ppvObj
)
{
*
ppvObj
=
NULL
;
if
(
riid
==
IID_IOutlookExtItemEvents
)
{
*
ppvObj
=
(
LPVOID
)
this
;
AddRef
();
return
S_OK
;
}
if
(
riid
==
IID_IUnknown
)
{
*
ppvObj
=
(
LPVOID
)
m_pExchExt
;
m_pExchExt
->
AddRef
();
return
S_OK
;
}
return
E_NOINTERFACE
;
}
/* This method is called if an item is about to being displayed.
Possible return values are:
S_FALSE - Let Outlook continue the operation.
E_ABORT - Abort the open operation and the item is not being
displayed.
*/
STDMETHODIMP
GpgolItemEvents
::
OnOpen
(
LPEXCHEXTCALLBACK
eecb
)
{
LPMDB
mdb
=
NULL
;
LPMESSAGE
message
=
NULL
;
HWND
hwnd
=
NULL
;
log_debug
(
"%s:%s: received
\n
"
,
SRCNAME
,
__func__
);
m_wasencrypted
=
false
;
eecb
->
GetObject
(
&
mdb
,
(
LPMAPIPROP
*
)
&
message
);
if
(
message_incoming_handler
(
message
,
hwnd
,
false
))
m_processed
=
TRUE
;
ul_release
(
message
,
__func__
,
__LINE__
);
ul_release
(
mdb
,
__func__
,
__LINE__
);
return
S_FALSE
;
}
/* Like all the other Complete methods this one is called after OnOpen
has been called for all registered extensions. FLAGS may have these
values:
0 - The open action has not been canceled.
EEME_FAILED or EEME_COMPLETE_FAILED - both indicate that the
open action has been canceled.
Note that this method may be called more than once for each OnOpen
and may even occur without an OnOpen (i.e. while setting up a new
extension).
The same return values as for OnOpen may be used..
*/
STDMETHODIMP
GpgolItemEvents
::
OnOpenComplete
(
LPEXCHEXTCALLBACK
eecb
,
ULONG
flags
)
{
HRESULT
hr
;
log_debug
(
"%s:%s: received, flags=%#lx"
,
SRCNAME
,
__func__
,
flags
);
/* If the message has been processed by us (i.e. in OnOpen), we now
use our own display code. */
if
(
!
flags
&&
m_processed
)
{
LPMDB
mdb
=
NULL
;
LPMESSAGE
message
=
NULL
;
HWND
hwnd
=
NULL
;
if
(
FAILED
(
eecb
->
GetWindow
(
&
hwnd
)))
hwnd
=
NULL
;
hr
=
eecb
->
GetObject
(
&
mdb
,
(
LPMAPIPROP
*
)
&
message
);
if
(
hr
!=
S_OK
||
!
message
)
log_error
(
"%s:%s: error getting message: hr=%#lx"
,
SRCNAME
,
__func__
,
hr
);
else
{
if
(
message_display_handler
(
message
,
hwnd
))
m_wasencrypted
=
true
;
}
if
(
message
)
message
->
Release
();
if
(
mdb
)
mdb
->
Release
();
}
return
S_FALSE
;
}
/* This method is called if an item's window received a close request.
Possible return values are:
S_FALSE - Let Outlook continue the operation.
E_ABORT - Abort the close operation and don't dismiss the window.
*/
STDMETHODIMP
GpgolItemEvents
::
OnClose
(
LPEXCHEXTCALLBACK
eecb
,
ULONG
save_options
)
{
log_debug
(
"%s:%s: received, options=%#lx"
,
SRCNAME
,
__func__
,
save_options
);
return
S_FALSE
;
}
/* This is the corresponding Complete method for OnClose. See
OnOpenComplete for a description. */
STDMETHODIMP
GpgolItemEvents
::
OnCloseComplete
(
LPEXCHEXTCALLBACK
eecb
,
ULONG
flags
)
{
log_debug
(
"%s:%s: received, flags=%#lx"
,
SRCNAME
,
__func__
,
flags
);
if
(
m_wasencrypted
)
{
/* Delete any body parts so that encrypted stuff won't show up
in the clear. */
HRESULT
hr
;
LPMESSAGE
message
=
NULL
;
LPMDB
mdb
=
NULL
;
log_debug
(
"%s:%s: deleting body properties"
,
SRCNAME
,
__func__
);
hr
=
eecb
->
GetObject
(
&
mdb
,
(
LPMAPIPROP
*
)
&
message
);
if
(
SUCCEEDED
(
hr
))
{
mapi_delete_body_parts
(
message
,
KEEP_OPEN_READWRITE
);
m_wasencrypted
=
false
;
}
else
log_debug_w32
(
hr
,
"%s:%s: error getting message"
,
SRCNAME
,
__func__
);
ul_release
(
message
,
__func__
,
__LINE__
);
ul_release
(
mdb
,
__func__
,
__LINE__
);
}
return
S_FALSE
;
}
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