ZP-1340 Add transaction flag to stream writes.

Released under the Affero GNU General Public License (AGPL) version 3.

src/backend/kopano/mapi/class.taskrecurrence.php

@@ -304,7 +304,7 @@
 
             if (!empty($msgbody) && strrpos($msgbody, $separator) === false) {
                 $msgbody = $separator . $msgbody;
-                $stream = mapi_openproperty($this->message, PR_BODY, IID_IStream, 0, 0);
+                $stream = mapi_openproperty($this->message, PR_BODY, IID_IStream, STGM_TRANSACTED, 0);
                 mapi_stream_setsize($stream, strlen($msgbody));
                 mapi_stream_write($stream, $msgbody);
                 mapi_stream_commit($stream);

src/backend/kopano/mapi/class.taskrequest.php

@@ -910,7 +910,7 @@
             // edit response before sending task response.
             if ($this->taskCommentsInfo) {
                 $comments = $this->getTaskCommentsInfo();
-                $stream = mapi_openproperty($outgoing, PR_BODY, IID_IStream, 0, MAPI_CREATE | MAPI_MODIFY);
+                $stream = mapi_openproperty($outgoing, PR_BODY, IID_IStream, STGM_TRANSACTED, MAPI_CREATE | MAPI_MODIFY);
                 mapi_stream_setsize($stream, strlen($comments));
                 mapi_stream_write($stream, $comments);
                 mapi_stream_commit($stream);

src/backend/kopano/mapi/mapidefs.php

@@ -658,3 +658,21 @@ define('RSF_ELID_ENTRYID'                        ,0x0001); // variable Indicates
                                                            // that is of the type indicated by the value of the PersistID field of the PersistData structure.
 define('RSF_ELID_HEADER'                         ,0x0002); // 4 bytes Indicates that the ElementData field contains a 4-byte header value equal to 0x00000000.
 
+define('STGM_DIRECT'                             ,0x00000000);
+define('STGM_TRANSACTED'                         ,0x00010000);
+define('STGM_SIMPLE'                             ,0x08000000);
+define('STGM_READ'                               ,0x00000000);
+define('STGM_WRITE'                              ,0x00000001);
+define('STGM_READWRITE'                          ,0x00000002);
+define('STGM_SHARE_DENY_NONE'                    ,0x00000040);
+define('STGM_SHARE_DENY_READ'                    ,0x00000030);
+define('STGM_SHARE_DENY_WRITE'                   ,0x00000020);
+define('STGM_SHARE_EXCLUSIVE'                    ,0x00000010);
+define('STGM_PRIORITY'                           ,0x00040000);
+define('STGM_DELETEONRELEASE'                    ,0x04000000);
+define('STGM_NOSCRATCH'                          ,0x00100000);
+define('STGM_CREATE'                             ,0x00001000);
+define('STGM_CONVERT'                            ,0x00020000);
+define('STGM_FAILIFTHERE'                        ,0x00000000);
+define('STGM_NOSNAPSHOT'                         ,0x00200000);
+define('STGM_DIRECT_SWMR'                        ,0x00400000);
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