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/* OEProc.c - OE window procedures |
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* Copyright (C) 2001, 2002, 2003, 2006 Timo Schulz |
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* |
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* This file is part of GPGOE. |
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* |
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* GPGOE is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation; either version 2.1 of the License, or |
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* (at your option) any later version. |
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* |
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* GPGOE is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with GPGOE; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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#include <windows.h> |
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#include <stdio.h> |
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#include <commctrl.h> |
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|
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#include "gpgme.h" |
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#include "GPGOE.h" |
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|
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/* Outlook V6.x command IDs. */ |
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#define ID_OE_ENCRYPT 40260 |
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#define ID_OE_SIGN 40299 |
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#define ID_OE_SEND 40411 |
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#define ID_OE_PREVMSG 40145 |
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#define ID_OE_NEXTMSG 40146 |
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|
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/* Outlook select charset IDs. */ |
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#define ID_OE_CP_UTF8 42540 |
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#define ID_OE_CP_WEUROPE_ISO 42544 |
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#define ID_OE_CP_WEUROPE_WINCP 42545 |
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#define ID_OE_CP_MEUROPE_ISO 42525 |
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#define ID_OE_CP_MEUROPE_WINCP 42526 |
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#define ID_OE_CP_LATIN9 42535 |
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|
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/* Global plugin structure. */ |
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static plugin_ctx_t oe_plug; |
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|
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/* We show a warning for the attachment problem, but only once. */ |
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static int attach_warn_shown = 0; |
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|
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/* One time initialisation finished?. */ |
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static int plugin_preload_done = 0; |
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|
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/* Event to indicate if the plugin is active or not. */ |
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HANDLE plugin_active = NULL; |
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|
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|
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/* Return the Outlook main window handle. */ |
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HWND |
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outlook_get_main_window (void) |
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{ |
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if (!oe_plug) |
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return GetActiveWindow (); |
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return oe_plug->main_wnd; |
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} |
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|
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|
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/* Display a warning that the attachments of the mail will be |
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sent in cleartext. */ |
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static void |
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show_attachment_warn (HWND hwnd) |
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{ |
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if (attach_warn_shown) |
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return; |
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|
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MessageBox (hwnd, _("GPGOE is unable to secure attachments.\r\n" |
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"As a result the data attached to this mail is NOT encrypted."), |
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_("GPG Plug-in Warning"), MB_ICONWARNING|MB_OK); |
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attach_warn_shown = 1; |
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} |
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|
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|
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/* Display a warning that the mail will be sent in clear. */ |
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static void |
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show_plaintext_warn (HWND hwnd, int rc) |
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{ |
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const char *fmt, *s; |
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char *p; |
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|
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fmt = _("WARNING: This message will be sent in cleartext.\r\n\r\n" |
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"Error description: %s."); |
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s = gpgme_strerror (rc); |
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p = xcalloc (1, strlen (fmt)+ strlen (s)+2); |
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sprintf (p, fmt, s); |
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MessageBox (hwnd, p, _("GPG Plug-in Warning"), MB_ICONWARNING|MB_OK); |
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free_if_alloc (p); |
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} |
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|
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|
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/* Reset the plugin state. */ |
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static void |
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plugin_reset (plugin_ctx_t ctx) |
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{ |
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if (!ctx) |
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return; |
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free_if_alloc (ctx->to); |
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free_if_alloc (ctx->cc); |
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free_if_alloc (ctx->bcc); |
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ctx->sign = ctx->encrypt = 0; |
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memset (ctx->errbuf, 0, sizeof (ctx->errbuf)); |
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} |
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|
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|
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/* Release plugin context. */ |
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static void |
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plugin_release (plugin_ctx_t ctx) |
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{ |
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if (!ctx) |
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return; |
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plugin_reset (ctx); |
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free_if_alloc (ctx); |
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} |
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|
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|
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/* Create new plugin context. */ |
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static int |
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plugin_new (plugin_ctx_t *r_ctx) |
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{ |
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plugin_ctx_t ctx; |
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|
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*r_ctx = NULL; |
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ctx = xcalloc (1, sizeof *ctx); |
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*r_ctx = ctx; |
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return 0; |
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} |
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|
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|
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/* Extract the email from the given edit control @edit |
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and return it as a string. */ |
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static char* |
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get_address_text (HWND main, HWND edit) |
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{ |
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AttachThreadInput (GetCurrentThreadId (), |
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GetWindowThreadProcessId (main, NULL), |
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TRUE); |
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|
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SetFocus (edit); |
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|
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AttachThreadInput (GetCurrentThreadId (), |
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GetWindowThreadProcessId (main, NULL), |
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FALSE); |
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|
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SendMessage (main, WM_COMMAND, MAKEWPARAM (ID_OE_SELECTALL, 0), 0); |
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SendMessage (main, WM_COMMAND, MAKEWPARAM (ID_OE_COPY, 0), 0); |
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|
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Sleep (200); |
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|
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return get_clip_text (NULL);; |
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} |
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|
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|
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/* Try to figure out if the message is from the inbox or |
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the outbox folder. */ |
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int |
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window_is_inbox (HWND to_hwnd) |
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{ |
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/* |
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XXX: we need to check the express version otherwise early |
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V6 versions will not work. |
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if (GetWindowLong (to_hwnd, GWL_STYLE) & ES_READONLY) |
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return 1; |
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*/ |
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if (GetDlgCtrlID (to_hwnd) == 1028) |
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return 1; |
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return 0; |
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} |
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|
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|
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/* Check if the attach listview control contains at least one entry. |
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Return the amount of attachments. */ |
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int |
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mail_count_attachments (plugin_ctx_t ctx) |
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{ |
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if (!ctx->attach) |
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return 0; |
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return ListView_GetItemCount (ctx->attach); |
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} |
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|
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|
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/* Initialize the plugin context: |
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Find all windows the plugin need to handle messages. |
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The text of the recipients fields is only used when the message comes |
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from the outbox, because the inbox fields are readonly. |
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>= OE 5.5 uses a newer RichEdit control! */ |
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int |
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plugin_init (plugin_ctx_t ctx, HWND main, int is_inbox) |
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{ |
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/* store original clipboard text. */ |
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free_if_alloc (ctx->orig_text); |
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ctx->orig_text = get_clip_text (NULL); |
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|
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ctx->sign = 0; |
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ctx->encrypt = 0; |
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|
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ctx->main_wnd = main; |
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ctx->addr_wnd = FindWindowEx (main, NULL, "OE_Envelope", NULL); |
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ctx->to_wnd = FindWindowEx (ctx->addr_wnd, NULL, "RICHEDIT", NULL); |
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if (!ctx->to_wnd) |
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ctx->to_wnd = FindWindowEx (ctx->addr_wnd, NULL, "RichEdit20W", NULL); |
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ctx->cc_wnd = FindWindowEx (ctx->addr_wnd, ctx->to_wnd, "RICHEDIT", NULL); |
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if (!ctx->cc_wnd) |
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ctx->cc_wnd = FindWindowEx (ctx->addr_wnd, ctx->to_wnd, |
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"RichEdit20W", NULL); |
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ctx->bcc_wnd = FindWindowEx (ctx->addr_wnd, ctx->cc_wnd, "RICHEDIT", NULL); |
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if (!ctx->bcc_wnd) |
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ctx->bcc_wnd = FindWindowEx (ctx->addr_wnd, ctx->cc_wnd, |
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"RichEdit20W", NULL); |
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ctx->to = NULL; |
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ctx->cc = NULL; |
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ctx->bcc = NULL; |
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|
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ctx->attach = FindWindowEx (ctx->addr_wnd, NULL, "SysListView32", NULL); |
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|
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if (!is_inbox && !window_is_inbox (ctx->to_wnd)) { |
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ctx->to = get_address_text (ctx->main_wnd, ctx->to_wnd); |
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ctx->cc = get_address_text (ctx->main_wnd, ctx->cc_wnd); |
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ctx->bcc = get_address_text (ctx->main_wnd, ctx->bcc_wnd); |
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} |
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|
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return 0; |
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} |
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|
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|
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/* Clear the clipboard contents. */ |
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static void |
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clear_clipboard (void) |
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{ |
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OpenClipboard (NULL); |
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EmptyClipboard (); |
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CloseClipboard (); |
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} |
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|
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|
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/* Restore the original clipboard data from the plugin context. */ |
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static void |
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restore_clipboard (plugin_ctx_t ctx) |
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{ |
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if (!ctx->orig_text) |
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return; |
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set_clip_text (NULL, ctx->orig_text, strlen (ctx->orig_text)); |
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free_if_alloc (ctx->orig_text); |
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} |
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|
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|
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/* Subclass dialog procedure for the outlook message window. */ |
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LRESULT CALLBACK |
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oe_proc (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
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static int initialized = 0; |
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static int encr_msg = 0; |
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static int sign_msg = 0; |
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int rc = 0; |
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|
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if (initialized == 0) |
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initialized = SetTimer (hwnd, 1, 1000, NULL); |
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|
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switch (msg) { |
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case WM_CREATE: |
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if (!plugin_preload_done) { |
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/* we need to load this lib here otherwise the richedit |
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control would not be displayed. */ |
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LoadLibrary ("RichEd32.Dll"); |
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setup_gettext(); |
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plugin_active = CreateEvent (NULL, TRUE, /*TRUE*/FALSE, NULL); |
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plugin_preload_done = 1; |
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} |
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/* |
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else |
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SetEvent (plugin_active); |
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*/ |
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initialized = 0; |
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plugin_new (&oe_plug); |
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break; |
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|
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case WM_DESTROY: |
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ResetEvent (plugin_active); |
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plugin_release (oe_plug); |
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encr_msg = sign_msg = 0; |
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break; |
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|
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case WM_TIMER: |
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KillTimer (hwnd, initialized); |
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plugin_reset (oe_plug); |
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plugin_init (oe_plug, hwnd, 1); |
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if (window_is_inbox (oe_plug->to_wnd)) { |
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clear_clipboard (); |
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rc = oe_handle_mail (oe_plug); |
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if (rc) |
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show_error (hwnd, _("GPG Plug-in Error"), MB_ICONERROR|MB_OK, |
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_("decrypt/verify: %s\n%s"), |
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gpgme_strerror (rc), oe_plug->errbuf); |
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} |
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break; |
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|
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case WM_COMMAND: |
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switch (LOWORD (wparam)) { |
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case ID_OE_PREVMSG: |
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case ID_OE_NEXTMSG: |
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SetTimer (hwnd, 1, 1000, NULL); |
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break; |
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|
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case ID_OE_CP_UTF8: |
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oe_plug->use_utf8 = 1; |
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break; |
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|
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case ID_OE_CP_WEUROPE_ISO: |
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case ID_OE_CP_WEUROPE_WINCP: |
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case ID_OE_CP_MEUROPE_ISO: |
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case ID_OE_CP_MEUROPE_WINCP: |
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case ID_OE_CP_LATIN9: |
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oe_plug->use_utf8 = 0; |
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break; |
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|
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case ID_OE_ENCRYPT: |
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encr_msg ^= 1; |
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break; |
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|
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case ID_OE_SIGN: |
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sign_msg ^= 1; |
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break; |
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|
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case ID_OE_SEND: |
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if (encr_msg || sign_msg) { |
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plugin_init (oe_plug, hwnd, 0); |
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if (encr_msg) { |
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SendMessage (hwnd, WM_COMMAND, MAKEWPARAM (ID_OE_ENCRYPT, 0), 0); |
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oe_plug->encrypt = 1; |
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} |
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if (sign_msg) { |
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SendMessage (hwnd, WM_COMMAND, MAKEWPARAM (ID_OE_SIGN, 0), 0); |
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oe_plug->sign = 1; |
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} |
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rc = oe_handle_mail (oe_plug); |
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if (rc) |
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show_plaintext_warn (hwnd, rc); |
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restore_clipboard (oe_plug); |
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if (mail_count_attachments (oe_plug) > 0) |
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show_attachment_warn (hwnd); |
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} |
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break; |
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} |
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break; |
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} |
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|
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return CallWindowProc (oe_proc_old, hwnd, msg, wparam, lparam); |
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} |
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