src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <gtk/gtkscrolledwindow.h>
  29 #include <gtk/gtkctree.h>
  30 #include <gtk/gtkvbox.h>
  31 #include <gtk/gtkvpaned.h>
  32 #include <gtk/gtktext.h>
  33 #include <gtk/gtksignal.h>
  34 #include <gtk/gtkmenu.h>
  35 #include <gtk/gtkdnd.h>
  36 #include <gtk/gtkselection.h>
  37 #include <stdio.h>
  38 #include <unistd.h>
  39
  40 #include "intl.h"
  41 #include "main.h"
  42 #include "mimeview.h"
  43 #include "textview.h"
  44 #include "procmime.h"
  45 #include "summaryview.h"
  46 #include "menu.h"
  47 #include "filesel.h"
  48 #include "alertpanel.h"
  49 #include "inputdialog.h"
  50 #include "utils.h"
  51 #include "gtkutils.h"
  52 #include "prefs_common.h"
  53 #include "rfc2015.h"
  54 #include "pgptext.h"
  55
  56 typedef enum
  57 {
  58         COL_MIMETYPE = 0,
  59         COL_SIZE     = 1,
  60         COL_NAME     = 2
  61 } MimeViewColumnPos;
  62
  63 #define N_MIMEVIEW_COLS 3
  64
  65 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  66                                                  MimeInfo       *mimeinfo,
  67                                                  GtkCTreeNode   *parent);
  68 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  69                                                  MimeInfo       *partinfo,
  70                                                  GtkCTreeNode   *parent);
  71 static void mimeview_show_message_part          (MimeView       *mimeview,
  72                                                  MimeInfo       *partinfo);
  73 static void mimeview_show_image_part            (MimeView       *mimeview,
  74                                                  MimeInfo       *partinfo);
  75 static void mimeview_change_view_type           (MimeView       *mimeview,
  76                                                  MimeViewType    type);
  77 static void mimeview_clear                      (MimeView       *mimeview);
  78
  79 static void mimeview_selected           (GtkCTree       *ctree,
  80                                          GtkCTreeNode   *node,
  81                                          gint            column,
  82                                          MimeView       *mimeview);
  83 static void mimeview_start_drag         (GtkWidget      *widget,
  84                                          gint            button,
  85                                          GdkEvent       *event,
  86                                          MimeView       *mimeview);
  87 static gint mimeview_button_pressed     (GtkWidget      *widget,
  88                                          GdkEventButton *event,
  89                                          MimeView       *mimeview);
  90 static gint mimeview_key_pressed        (GtkWidget      *widget,
  91                                          GdkEventKey    *event,
  92                                          MimeView       *mimeview);
  93
  94 static void mimeview_drag_data_get      (GtkWidget        *widget,
  95                                          GdkDragContext   *drag_context,
  96                                          GtkSelectionData *selection_data,
  97                                          guint             info,
  98                                          guint             time,
  99                                          MimeView         *mimeview);
 100
 101 static void mimeview_display_as_text    (MimeView       *mimeview);
 102 static void mimeview_save_as            (MimeView       *mimeview);
 103 static void mimeview_launch             (MimeView       *mimeview);
 104 static void mimeview_open_with          (MimeView       *mimeview);
 105 static void mimeview_view_file          (const gchar    *filename,
 106                                          MimeInfo       *partinfo,
 107                                          const gchar    *cmdline);
 108 #if USE_GPGME
 109 static void mimeview_check_signature    (MimeView       *mimeview);
 110 #endif
 111
 112 static GtkItemFactoryEntry mimeview_popup_entries[] =
 113 {
 114         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 115         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 116         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 117         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL}
 118 #if USE_GPGME
 119         ,
 120         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 121 #endif
 122 };
 123
 124 static GtkTargetEntry mimeview_mime_types[] =
 125 {
 126         {"text/uri-list", 0, 0}
 127 };
 128
 129 MimeView *mimeview_create(void)
 130 {
 131         MimeView *mimeview;
 132
 133         GtkWidget *paned;
 134         GtkWidget *scrolledwin;
 135         GtkWidget *ctree;
 136         GtkWidget *vbox;
 137         GtkWidget *popupmenu;
 138         GtkItemFactory *popupfactory;
 139         gchar *titles[N_MIMEVIEW_COLS];
 140         gint n_entries;
 141         gint i;
 142
 143         debug_print(_("Creating MIME view...\n"));
 144         mimeview = g_new0(MimeView, 1);
 145
 146         titles[COL_MIMETYPE] = _("MIME Type");
 147         titles[COL_SIZE]     = _("Size");
 148         titles[COL_NAME]     = _("Name");
 149
 150         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 151         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 152                                        GTK_POLICY_AUTOMATIC,
 153                                        GTK_POLICY_ALWAYS);
 154         gtk_widget_set_usize(scrolledwin, -1, 80);
 155
 156         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 157         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 158         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 159         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 160                                            GTK_JUSTIFY_RIGHT);
 161         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 162         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 163         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 164                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 165                                        GTK_CAN_FOCUS);
 166         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 167
 168         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 169                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 170         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 171                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 172         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 173                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 174         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 175                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 176         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 177                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 178
 179         vbox = gtk_vbox_new(FALSE, 0);
 180
 181         paned = gtk_vpaned_new();
 182         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 183         gtk_paned_add2(GTK_PANED(paned), vbox);
 184         gtk_widget_show_all(paned);
 185
 186         n_entries = sizeof(mimeview_popup_entries) /
 187                 sizeof(mimeview_popup_entries[0]);
 188         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 189                                       "<MimeView>", &popupfactory, mimeview);
 190
 191         mimeview->paned       = paned;
 192         mimeview->scrolledwin = scrolledwin;
 193         mimeview->ctree       = ctree;
 194         mimeview->vbox        = vbox;
 195         mimeview->popupmenu   = popupmenu;
 196         mimeview->popupfactory = popupfactory;
 197
 198         return mimeview;
 199 }
 200
 201 void mimeview_init(MimeView *mimeview)
 202 {
 203 }
 204
 205 /*
 206  * Check whether the message is OpenPGP signed
 207  */
 208 #if USE_GPGME
 209 static gboolean mimeview_is_signed(MimeView *mimeview)
 210 {
 211         MimeInfo *partinfo;
 212
 213         debug_print("mimeview_is signed of %p\n", mimeview);
 214
 215         if (!mimeview) return FALSE;
 216         if (!mimeview->opened) return FALSE;
 217
 218         debug_print("mimeview_is_signed: open\n" );
 219
 220         if (!mimeview->file) return FALSE;
 221
 222         debug_print("mimeview_is_signed: file\n" );
 223
 224         partinfo = gtk_ctree_node_get_row_data
 225                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 226         g_return_val_if_fail(partinfo != NULL, FALSE);
 227
 228         /* walk the tree and see whether there is a signature somewhere */
 229         do {
 230                 if (rfc2015_has_signature(partinfo))
 231                         return TRUE;
 232                 if (pgptext_has_signature(partinfo))
 233                         return TRUE;
 234         } while ((partinfo = partinfo->parent) != NULL);
 235
 236         debug_print("mimeview_is_signed: FALSE\n" );
 237
 238         return FALSE;
 239 }
 240
 241 static void set_unchecked_signature(MimeInfo *mimeinfo)
 242 {
 243         MimeInfo *sig_partinfo;
 244
 245         sig_partinfo = rfc2015_find_signature(mimeinfo);
 246         if (sig_partinfo == NULL) return;
 247
 248         g_free(sig_partinfo->sigstatus);
 249         sig_partinfo->sigstatus =
 250                 g_strdup(_("Select \"Check signature\" to check"));
 251
 252         g_free(sig_partinfo->sigstatus_full);
 253         sig_partinfo->sigstatus_full = NULL;
 254 }
 255 #endif /* USE_GPGME */
 256
 257 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 258                            const gchar *file)
 259 {
 260         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 261         GtkCTreeNode *node;
 262         gchar buf[BUFFSIZE];
 263         FILE *fp;
 264
 265         mimeview_clear(mimeview);
 266
 267         g_return_if_fail(file != NULL);
 268         g_return_if_fail(mimeinfo != NULL);
 269
 270         mimeview->mimeinfo = mimeinfo;
 271
 272         if ((fp = fopen(file, "r")) == NULL) {
 273                 FILE_OP_ERROR(file, "fopen");
 274                 return;
 275         }
 276         mimeview->file = g_strdup(file);
 277
 278         /* skip MIME part headers */
 279         if (mimeinfo->mime_type == MIME_MULTIPART) {
 280                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 281                 perror("fseek");
 282                 while (fgets(buf, sizeof(buf), fp) != NULL)
 283                         if (buf[0] == '\r' || buf[0] == '\n') break;
 284         }
 285
 286         procmime_scan_multipart_message(mimeinfo, fp);
 287 #if USE_GPGME
 288         if (prefs_common.auto_check_signatures)
 289                 rfc2015_check_signature(mimeinfo, fp);
 290         else
 291                 set_unchecked_signature(mimeinfo);
 292 #endif
 293         fclose(fp);
 294
 295         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 296                                          mimeview);
 297
 298         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 299
 300         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 301                                            mimeview_selected, mimeview);
 302
 303         /* search first text part */
 304         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 305              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 306                 MimeInfo *partinfo;
 307
 308                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 309                 if (partinfo &&
 310                     (partinfo->mime_type == MIME_TEXT ||
 311                      partinfo->mime_type == MIME_TEXT_HTML))
 312                         break;
 313         }
 314         if (!node)
 315                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 316
 317         if (node) {
 318                 gtk_ctree_select(ctree, node);
 319                 gtkut_ctree_set_focus_row(ctree, node);
 320                 gtk_widget_grab_focus(mimeview->ctree);
 321         }
 322 }
 323
 324 void mimeview_destroy(MimeView *mimeview)
 325 {
 326         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 327         g_free(mimeview->file);
 328         g_free(mimeview);
 329 }
 330
 331 static void mimeview_set_multipart_tree(MimeView *mimeview,
 332                                         MimeInfo *mimeinfo,
 333                                         GtkCTreeNode *parent)
 334 {
 335         GtkCTreeNode *current = parent;
 336
 337         g_return_if_fail(mimeinfo != NULL);
 338
 339         if (!mimeinfo->sub && mimeinfo->parent)
 340                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 341
 342         if (mimeinfo->sub)
 343                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 344
 345         if (mimeinfo->children)
 346                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 347
 348         if (mimeinfo->next)
 349                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 350 }
 351
 352 static gchar *get_part_name(MimeInfo *partinfo)
 353 {
 354 #if USE_GPGME
 355         if (partinfo->sigstatus)
 356                 return partinfo->sigstatus;
 357         else
 358 #endif
 359         if (partinfo->name)
 360                 return partinfo->name;
 361         else if (partinfo->filename)
 362                 return partinfo->filename;
 363         else
 364                 return "";
 365 }
 366
 367 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 368                                           MimeInfo *partinfo,
 369                                           GtkCTreeNode *parent)
 370 {
 371         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 372         GtkCTreeNode *node;
 373         gchar *str[N_MIMEVIEW_COLS];
 374
 375         str[COL_MIMETYPE] =
 376                 partinfo->content_type ? partinfo->content_type : "";
 377         str[COL_SIZE] = to_human_readable(partinfo->size);
 378         str[COL_NAME] = get_part_name(partinfo);
 379
 380         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 381                                      NULL, NULL, NULL, NULL,
 382                                      FALSE, TRUE);
 383         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 384
 385         return node;
 386 }
 387
 388 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 389 {
 390         FILE *fp;
 391         const gchar *fname;
 392 #if USE_GPGME
 393         MimeInfo *pi;
 394 #endif
 395
 396         if (!partinfo) return;
 397
 398 #if USE_GPGME
 399         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 400                 ;
 401         fname = pi ? pi->plaintextfile : mimeview->file;
 402 #else
 403         fname = mimeview->file;
 404 #endif /* USE_GPGME */
 405         if (!fname) return;
 406
 407         if ((fp = fopen(fname, "r")) == NULL) {
 408                 FILE_OP_ERROR(fname, "fopen");
 409                 return;
 410         }
 411
 412         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 413                 FILE_OP_ERROR(mimeview->file, "fseek");
 414                 fclose(fp);
 415                 return;
 416         }
 417
 418         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 419         textview_show_part(mimeview->textview, partinfo, fp);
 420
 421         fclose(fp);
 422 }
 423
 424 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 425 {
 426         gchar *filename;
 427
 428         if (!partinfo) return;
 429
 430         filename = procmime_get_tmp_file_name(partinfo);
 431
 432         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 433                 alertpanel_error
 434                         (_("Can't get the part of multipart message."));
 435         else {
 436                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 437                 /* Workaround for the GTK+ bug with handling scroll adjustments
 438                  * in GtkViewport */
 439                 imageview_clear(mimeview->imageview);
 440                 imageview_show_image(mimeview->imageview, partinfo, filename);
 441                 unlink(filename);
 442         }
 443
 444         g_free(filename);
 445 }
 446
 447 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 448 {
 449         TextView  *textview  = mimeview->textview;
 450         ImageView *imageview = mimeview->imageview;
 451
 452         if (mimeview->type == type) return;
 453
 454         switch (type) {
 455         case MIMEVIEW_IMAGE:
 456                 gtkut_container_remove(GTK_CONTAINER(mimeview->vbox),
 457                                        GTK_WIDGET_PTR(textview));
 458                 gtk_container_add(GTK_CONTAINER(mimeview->vbox),
 459                                   GTK_WIDGET_PTR(imageview));
 460                 break;
 461         case MIMEVIEW_TEXT:
 462                 gtkut_container_remove(GTK_CONTAINER(mimeview->vbox),
 463                                        GTK_WIDGET_PTR(imageview));
 464                 gtk_container_add(GTK_CONTAINER(mimeview->vbox),
 465                                   GTK_WIDGET_PTR(textview));
 466                 break;
 467         default:
 468                 return;
 469         }
 470
 471         mimeview->type = type;
 472 }
 473
 474 static void mimeview_clear(MimeView *mimeview)
 475 {
 476         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 477
 478         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 479         mimeview->mimeinfo = NULL;
 480
 481         gtk_clist_clear(clist);
 482         textview_clear(mimeview->textview);
 483         imageview_clear(mimeview->imageview);
 484
 485         mimeview->opened = NULL;
 486
 487         g_free(mimeview->file);
 488         mimeview->file = NULL;
 489 }
 490
 491 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 492                               MimeView *mimeview)
 493 {
 494         MimeInfo *partinfo;
 495
 496         if (mimeview->opened == node) return;
 497         mimeview->opened = node;
 498         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 499
 500         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 501         if (!partinfo) return;
 502
 503         /* ungrab the mouse event */
 504         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 505                 gtk_grab_remove(GTK_WIDGET(ctree));
 506                 if (gdk_pointer_is_grabbed())
 507                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 508         }
 509
 510         switch (partinfo->mime_type) {
 511         case MIME_TEXT:
 512         case MIME_TEXT_HTML:
 513         case MIME_TEXT_ENRICHED:
 514         case MIME_MESSAGE_RFC822:
 515         case MIME_MULTIPART:
 516                 mimeview_show_message_part(mimeview, partinfo);
 517                 break;
 518 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 519         case MIME_IMAGE:
 520                 mimeview_show_image_part(mimeview, partinfo);
 521                 break;
 522 #endif
 523         default:
 524                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 525 #if USE_GPGME
 526                 if (g_strcasecmp(partinfo->content_type,
 527                                  "application/pgp-signature") == 0)
 528                         textview_show_signature_part(mimeview->textview,
 529                                                      partinfo);
 530                 else
 531 #endif
 532                         textview_show_mime_part(mimeview->textview, partinfo);
 533                 break;
 534         }
 535 }
 536
 537 static void mimeview_start_drag (GtkWidget *widget, gint button,
 538                                  GdkEvent *event, MimeView *mimeview)
 539 {
 540         GtkTargetList *list;
 541         GdkDragContext *context;
 542         MimeInfo *partinfo;
 543         GtkCTree *ctree;
 544
 545         g_return_if_fail(mimeview != NULL);
 546         ctree = GTK_CTREE(mimeview->ctree);
 547         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 548         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 549
 550         list = gtk_target_list_new(mimeview_mime_types, 1);
 551         context = gtk_drag_begin(widget, list,
 552                                  GDK_ACTION_COPY, button, event);
 553         gtk_drag_set_icon_default(context);
 554 }
 555
 556 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 557                                     MimeView *mimeview)
 558 {
 559         GtkCList *clist = GTK_CLIST(widget);
 560         MimeInfo *partinfo;
 561         gint row, column;
 562
 563         if (!event) return FALSE;
 564
 565         if (event->button == 2 || event->button == 3) {
 566                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 567                                                   &row, &column))
 568                         return FALSE;
 569                 gtk_clist_unselect_all(clist);
 570                 gtk_clist_select_row(clist, row, column);
 571                 gtkut_clist_set_focus_row(clist, row);
 572         }
 573
 574         if (event->button == 2 ||
 575             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 576                 /* call external program for image, audio or html */
 577                 mimeview_launch(mimeview);
 578         } else if (event->button == 3) {
 579                 partinfo = gtk_ctree_node_get_row_data
 580                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 581                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 582                                  partinfo->mime_type == MIME_TEXT_HTML ||
 583                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 584                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 585                                  partinfo->mime_type == MIME_IMAGE ||
 586                                  partinfo->mime_type == MIME_MULTIPART))
 587                         menu_set_sensitive(mimeview->popupfactory,
 588                                            "/Display as text", FALSE);
 589                 else
 590                         menu_set_sensitive(mimeview->popupfactory,
 591                                            "/Display as text", TRUE);
 592                 if (partinfo &&
 593                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 594                         menu_set_sensitive(mimeview->popupfactory,
 595                                            "/Open", FALSE);
 596                 else
 597                         menu_set_sensitive(mimeview->popupfactory,
 598                                            "/Open", TRUE);
 599 #if USE_GPGME
 600                 menu_set_sensitive(mimeview->popupfactory,
 601                                    "/Check signature",
 602                                    mimeview_is_signed(mimeview));
 603 #endif
 604
 605                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 606                                NULL, NULL, NULL, NULL,
 607                                event->button, event->time);
 608         }
 609
 610         return TRUE;
 611 }
 612
 613 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 614 {
 615         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 616 }
 617
 618 #define BREAK_ON_MODIFIER_KEY() \
 619         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 620
 621 #define KEY_PRESS_EVENT_STOP() \
 622         if (gtk_signal_n_emissions_by_name \
 623                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 624                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 625                                              "key_press_event"); \
 626         }
 627
 628 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 629                                  MimeView *mimeview)
 630 {
 631         SummaryView *summaryview;
 632         GtkCTree *ctree = GTK_CTREE(widget);
 633         GtkCTreeNode *node;
 634
 635         if (!event) return FALSE;
 636         if (!mimeview->opened) return FALSE;
 637
 638         switch (event->keyval) {
 639         case GDK_space:
 640                 if (textview_scroll_page(mimeview->textview, FALSE))
 641                         return TRUE;
 642
 643                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 644                 if (node) {
 645                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 646                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 647                         return TRUE;
 648                 }
 649                 break;
 650         case GDK_BackSpace:
 651                 textview_scroll_page(mimeview->textview, TRUE);
 652                 return TRUE;
 653         case GDK_Return:
 654                 textview_scroll_one_line(mimeview->textview,
 655                                          (event->state & GDK_MOD1_MASK) != 0);
 656                 return TRUE;
 657         case GDK_n:
 658         case GDK_N:
 659                 BREAK_ON_MODIFIER_KEY();
 660                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 661                 KEY_PRESS_EVENT_STOP();
 662
 663                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 664                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 665                 return TRUE;
 666         case GDK_p:
 667         case GDK_P:
 668                 BREAK_ON_MODIFIER_KEY();
 669                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 670                 KEY_PRESS_EVENT_STOP();
 671
 672                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 673                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 674                 return TRUE;
 675         case GDK_y:
 676                 BREAK_ON_MODIFIER_KEY();
 677                 KEY_PRESS_EVENT_STOP();
 678                 mimeview_save_as(mimeview);
 679                 return TRUE;
 680         case GDK_t:
 681                 BREAK_ON_MODIFIER_KEY();
 682                 KEY_PRESS_EVENT_STOP();
 683                 mimeview_display_as_text(mimeview);
 684                 return TRUE;
 685         case GDK_l:
 686                 BREAK_ON_MODIFIER_KEY();
 687                 KEY_PRESS_EVENT_STOP();
 688                 mimeview_launch(mimeview);
 689                 return TRUE;
 690         default:
 691         }
 692
 693         if (!mimeview->messageview->mainwin) return FALSE;
 694         summaryview = mimeview->messageview->mainwin->summaryview;
 695         summary_pass_key_press_event(summaryview, event);
 696         return TRUE;
 697 }
 698
 699 static void mimeview_drag_data_get(GtkWidget        *widget,
 700                                    GdkDragContext   *drag_context,
 701                                    GtkSelectionData *selection_data,
 702                                    guint             info,
 703                                    guint             time,
 704                                    MimeView         *mimeview)
 705 {
 706         gchar *filename, *uriname;
 707         MimeInfo *partinfo;
 708
 709         if (!mimeview->opened) return;
 710         if (!mimeview->file) return;
 711
 712         partinfo = gtk_ctree_node_get_row_data
 713                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 714         if (!partinfo) return;
 715         if (!partinfo->filename && !partinfo->name) return;
 716
 717         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 718         filename = g_basename(filename);
 719         if (*filename == '\0') return;
 720
 721         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 722                                filename, NULL);
 723
 724         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 725                 alertpanel_error
 726                         (_("Can't save the part of multipart message."));
 727
 728         uriname = g_strconcat("file:/", filename, NULL);
 729         gtk_selection_data_set(selection_data, selection_data->target, 8,
 730                                uriname, strlen(uriname));
 731
 732         g_free(uriname);
 733         g_free(filename);
 734 }
 735
 736 static void mimeview_display_as_text(MimeView *mimeview)
 737 {
 738         MimeInfo *partinfo;
 739
 740         if (!mimeview->opened) return;
 741
 742         partinfo = gtk_ctree_node_get_row_data
 743                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 744         mimeview_show_message_part(mimeview, partinfo);
 745 }
 746
 747 static void mimeview_save_as(MimeView *mimeview)
 748 {
 749         gchar *filename;
 750         gchar *defname = NULL;
 751         MimeInfo *partinfo;
 752
 753         if (!mimeview->opened) return;
 754         if (!mimeview->file) return;
 755
 756         partinfo = gtk_ctree_node_get_row_data
 757                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 758         g_return_if_fail(partinfo != NULL);
 759
 760         if (partinfo->filename)
 761                 defname = partinfo->filename;
 762         else if (partinfo->name) {
 763                 Xstrdup_a(defname, partinfo->name, return);
 764                 subst_for_filename(defname);
 765         }
 766
 767         filename = filesel_select_file(_("Save as"), defname);
 768         if (!filename) return;
 769         if (is_file_exist(filename)) {
 770                 AlertValue aval;
 771
 772                 aval = alertpanel(_("Overwrite"),
 773                                   _("Overwrite existing file?"),
 774                                   _("OK"), _("Cancel"), NULL);
 775                 if (G_ALERTDEFAULT != aval) return;
 776         }
 777
 778         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 779                 alertpanel_error
 780                         (_("Can't save the part of multipart message."));
 781 }
 782
 783 static void mimeview_launch(MimeView *mimeview)
 784 {
 785         MimeInfo *partinfo;
 786         gchar *filename;
 787
 788         if (!mimeview->opened) return;
 789         if (!mimeview->file) return;
 790
 791         partinfo = gtk_ctree_node_get_row_data
 792                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 793         g_return_if_fail(partinfo != NULL);
 794
 795         filename = procmime_get_tmp_file_name(partinfo);
 796
 797         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 798                 alertpanel_error
 799                         (_("Can't save the part of multipart message."));
 800         else
 801                 mimeview_view_file(filename, partinfo, NULL);
 802
 803         g_free(filename);
 804 }
 805
 806 static void mimeview_open_with(MimeView *mimeview)
 807 {
 808         MimeInfo *partinfo;
 809         gchar *filename;
 810         gchar *cmd;
 811
 812         if (!mimeview->opened) return;
 813         if (!mimeview->file) return;
 814
 815         partinfo = gtk_ctree_node_get_row_data
 816                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 817         g_return_if_fail(partinfo != NULL);
 818
 819         filename = procmime_get_tmp_file_name(partinfo);
 820
 821         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 822                 alertpanel_error
 823                         (_("Can't save the part of multipart message."));
 824                 g_free(filename);
 825                 return;
 826         }
 827
 828         if (!prefs_common.mime_open_cmd_history)
 829                 prefs_common.mime_open_cmd_history =
 830                         add_history(NULL, prefs_common.mime_open_cmd);
 831
 832         cmd = input_dialog_combo
 833                 (_("Open with"),
 834                  _("Enter the command line to open file:\n"
 835                    "(`%s' will be replaced with file name)"),
 836                  prefs_common.mime_open_cmd,
 837                  prefs_common.mime_open_cmd_history);
 838         if (cmd) {
 839                 mimeview_view_file(filename, partinfo, cmd);
 840                 g_free(prefs_common.mime_open_cmd);
 841                 prefs_common.mime_open_cmd = cmd;
 842                 prefs_common.mime_open_cmd_history =
 843                         add_history(prefs_common.mime_open_cmd_history, cmd);
 844         }
 845
 846         g_free(filename);
 847 }
 848
 849 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 850                                const gchar *cmdline)
 851 {
 852         static gchar *default_image_cmdline = "display '%s'";
 853         static gchar *default_audio_cmdline = "play '%s'";
 854         static gchar *default_html_cmdline =
 855                 "netscape -remote 'openURL(%s,raise)'";
 856         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 857         gchar buf[1024];
 858         gchar m_buf[1024];
 859         const gchar *cmd;
 860         const gchar *def_cmd;
 861         const gchar *p;
 862
 863         if (cmdline) {
 864                 cmd = cmdline;
 865                 def_cmd = NULL;
 866         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 867                 return;
 868         } else if (MIME_IMAGE == partinfo->mime_type) {
 869                 cmd = prefs_common.mime_image_viewer;
 870                 def_cmd = default_image_cmdline;
 871         } else if (MIME_AUDIO == partinfo->mime_type) {
 872                 cmd = prefs_common.mime_audio_player;
 873                 def_cmd = default_audio_cmdline;
 874         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 875                 cmd = prefs_common.uri_cmd;
 876                 def_cmd = default_html_cmdline;
 877         } else {
 878                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
 879                            partinfo->content_type, "%s");
 880                 cmd = m_buf;
 881                 def_cmd = NULL;
 882         }
 883
 884         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
 885             !strchr(p + 2, '%'))
 886                 g_snprintf(buf, sizeof(buf), cmd, filename);
 887         else {
 888                 if (cmd)
 889                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
 890                 if (def_cmd)
 891                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
 892                 else
 893                         return;
 894         }
 895
 896         execute_command_line(buf, TRUE);
 897 }
 898
 899 #if USE_GPGME
 900 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
 901                              gpointer data)
 902 {
 903         MimeInfo *partinfo;
 904         gchar *part_name;
 905
 906         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 907         g_return_if_fail(partinfo != NULL);
 908
 909         part_name = get_part_name(partinfo);
 910         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
 911 }
 912
 913 static void mimeview_update_names(MimeView *mimeview)
 914 {
 915         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 916
 917         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
 918 }
 919
 920 static void mimeview_update_signature_info(MimeView *mimeview)
 921 {
 922         MimeInfo *partinfo;
 923
 924         if (!mimeview) return;
 925         if (!mimeview->opened) return;
 926
 927         partinfo = gtk_ctree_node_get_row_data
 928                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 929         if (!partinfo) return;
 930
 931         if (g_strcasecmp(partinfo->content_type,
 932                          "application/pgp-signature") == 0) {
 933                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 934                 textview_show_signature_part(mimeview->textview, partinfo);
 935         }
 936 }
 937
 938 static void mimeview_check_signature(MimeView *mimeview)
 939 {
 940         MimeInfo *mimeinfo;
 941         gchar buf[BUFFSIZE];
 942         FILE *fp;
 943
 944         g_return_if_fail (mimeview_is_signed(mimeview));
 945
 946         mimeinfo = gtk_ctree_node_get_row_data
 947                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 948         g_return_if_fail(mimeinfo != NULL);
 949         g_return_if_fail(mimeview->file != NULL);
 950
 951         while (mimeinfo->parent)
 952                 mimeinfo = mimeinfo->parent;
 953
 954         if ((fp = fopen(mimeview->file, "r")) == NULL) {
 955                 FILE_OP_ERROR(mimeview->file, "fopen");
 956                 return;
 957         }
 958
 959         /* skip headers */
 960         if (mimeinfo->mime_type == MIME_MULTIPART) {
 961                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 962                 FILE_OP_ERROR(mimeview->file, "fseek");
 963                 while (fgets(buf, sizeof(buf), fp) != NULL)
 964                         if (buf[0] == '\r' || buf[0] == '\n') break;
 965         }
 966
 967         procmime_scan_multipart_message(mimeinfo, fp);
 968         rfc2015_check_signature(mimeinfo, fp);
 969         fclose(fp);
 970
 971         mimeview_update_names(mimeview);
 972         mimeview_update_signature_info(mimeview);
 973 }
 974 #endif /* USE_GPGME */