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/gtknotebook.h>
  29 #include <gtk/gtkscrolledwindow.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkvbox.h>
  32 #include <gtk/gtkvpaned.h>
  33 #include <gtk/gtktext.h>
  34 #include <gtk/gtksignal.h>
  35 #include <gtk/gtkmenu.h>
  36 #include <gtk/gtkdnd.h>
  37 #include <gtk/gtkselection.h>
  38 #include <stdio.h>
  39 #include <unistd.h>
  40
  41 #include "intl.h"
  42 #include "main.h"
  43 #include "mimeview.h"
  44 #include "textview.h"
  45 #include "procmime.h"
  46 #include "summaryview.h"
  47 #include "menu.h"
  48 #include "filesel.h"
  49 #include "alertpanel.h"
  50 #include "inputdialog.h"
  51 #include "utils.h"
  52 #include "gtkutils.h"
  53 #include "prefs_common.h"
  54 #include "rfc2015.h"
  55 #include "pgptext.h"
  56
  57 typedef enum
  58 {
  59         COL_MIMETYPE = 0,
  60         COL_SIZE     = 1,
  61         COL_NAME     = 2
  62 } MimeViewColumnPos;
  63
  64 #define N_MIMEVIEW_COLS 3
  65
  66 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  67                                                  MimeInfo       *mimeinfo,
  68                                                  GtkCTreeNode   *parent);
  69 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  70                                                  MimeInfo       *partinfo,
  71                                                  GtkCTreeNode   *parent);
  72 static void mimeview_show_message_part          (MimeView       *mimeview,
  73                                                  MimeInfo       *partinfo);
  74 static void mimeview_show_image_part            (MimeView       *mimeview,
  75                                                  MimeInfo       *partinfo);
  76 static void mimeview_change_view_type           (MimeView       *mimeview,
  77                                                  MimeViewType    type);
  78 static void mimeview_clear                      (MimeView       *mimeview);
  79
  80 static void mimeview_selected           (GtkCTree       *ctree,
  81                                          GtkCTreeNode   *node,
  82                                          gint            column,
  83                                          MimeView       *mimeview);
  84 static void mimeview_start_drag         (GtkWidget      *widget,
  85                                          gint            button,
  86                                          GdkEvent       *event,
  87                                          MimeView       *mimeview);
  88 static gint mimeview_button_pressed     (GtkWidget      *widget,
  89                                          GdkEventButton *event,
  90                                          MimeView       *mimeview);
  91 static gint mimeview_key_pressed        (GtkWidget      *widget,
  92                                          GdkEventKey    *event,
  93                                          MimeView       *mimeview);
  94
  95 static void mimeview_drag_data_get      (GtkWidget        *widget,
  96                                          GdkDragContext   *drag_context,
  97                                          GtkSelectionData *selection_data,
  98                                          guint             info,
  99                                          guint             time,
 100                                          MimeView         *mimeview);
 101
 102 static void mimeview_display_as_text    (MimeView       *mimeview);
 103 static void mimeview_save_as            (MimeView       *mimeview);
 104 static void mimeview_launch             (MimeView       *mimeview);
 105 static void mimeview_open_with          (MimeView       *mimeview);
 106 static void mimeview_view_file          (const gchar    *filename,
 107                                          MimeInfo       *partinfo,
 108                                          const gchar    *cmdline);
 109 #if USE_GPGME
 110 static void mimeview_check_signature    (MimeView       *mimeview);
 111 #endif
 112
 113 static GtkItemFactoryEntry mimeview_popup_entries[] =
 114 {
 115         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 116         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 117         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 118         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL}
 119 #if USE_GPGME
 120         ,
 121         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 122 #endif
 123 };
 124
 125 static GtkTargetEntry mimeview_mime_types[] =
 126 {
 127         {"text/uri-list", 0, 0}
 128 };
 129
 130 MimeView *mimeview_create(void)
 131 {
 132         MimeView *mimeview;
 133
 134         GtkWidget *notebook;
 135         GtkWidget *vbox;
 136         GtkWidget *paned;
 137         GtkWidget *scrolledwin;
 138         GtkWidget *ctree;
 139         GtkWidget *mime_vbox;
 140         GtkWidget *popupmenu;
 141         GtkItemFactory *popupfactory;
 142         gchar *titles[N_MIMEVIEW_COLS];
 143         gint n_entries;
 144         gint i;
 145
 146         debug_print(_("Creating MIME view...\n"));
 147         mimeview = g_new0(MimeView, 1);
 148
 149         titles[COL_MIMETYPE] = _("MIME Type");
 150         titles[COL_SIZE]     = _("Size");
 151         titles[COL_NAME]     = _("Name");
 152
 153         notebook = gtk_notebook_new();
 154         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 155
 156         vbox = gtk_vbox_new(FALSE, 0);
 157         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 158         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 159                                         _("Text"));
 160
 161         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 162         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 163                                        GTK_POLICY_AUTOMATIC,
 164                                        GTK_POLICY_ALWAYS);
 165         gtk_widget_set_usize(scrolledwin, -1, 80);
 166
 167         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 168         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 169         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 170         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 171                                            GTK_JUSTIFY_RIGHT);
 172         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 174         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 175                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 176                                        GTK_CAN_FOCUS);
 177         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 178
 179         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 180                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 181         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 182                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 183         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 184                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 185         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 186                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 187         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 188                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 189
 190         mime_vbox = gtk_vbox_new(FALSE, 0);
 191
 192         paned = gtk_vpaned_new();
 193         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 194         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 195         gtk_container_add(GTK_CONTAINER(notebook), paned);
 196         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 197                                         _("Attachments"));
 198
 199         gtk_widget_show_all(notebook);
 200
 201         n_entries = sizeof(mimeview_popup_entries) /
 202                 sizeof(mimeview_popup_entries[0]);
 203         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 204                                       "<MimeView>", &popupfactory, mimeview);
 205
 206         mimeview->notebook     = notebook;
 207         mimeview->vbox         = vbox;
 208         mimeview->paned        = paned;
 209         mimeview->scrolledwin  = scrolledwin;
 210         mimeview->ctree        = ctree;
 211         mimeview->mime_vbox    = mime_vbox;
 212         mimeview->popupmenu    = popupmenu;
 213         mimeview->popupfactory = popupfactory;
 214         mimeview->type         = -1;
 215
 216         return mimeview;
 217 }
 218
 219 void mimeview_init(MimeView *mimeview)
 220 {
 221 }
 222
 223 /*
 224  * Check whether the message is OpenPGP signed
 225  */
 226 #if USE_GPGME
 227 static gboolean mimeview_is_signed(MimeView *mimeview)
 228 {
 229         MimeInfo *partinfo;
 230         MsgInfo *msginfo;
 231
 232         debug_print("mimeview_is signed of %p\n", mimeview);
 233
 234         if (!mimeview) return FALSE;
 235         if (!mimeview->opened) return FALSE;
 236
 237         debug_print("mimeview_is_signed: open\n" );
 238
 239         if (!mimeview->file) return FALSE;
 240
 241         debug_print("mimeview_is_signed: file\n" );
 242
 243         partinfo = gtk_ctree_node_get_row_data
 244                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 245         g_return_val_if_fail(partinfo != NULL, FALSE);
 246
 247         /* walk the tree and see whether there is a signature somewhere */
 248         do {
 249                 if (rfc2015_has_signature(partinfo))
 250                         return TRUE;
 251                 if (pgptext_has_signature(msginfo, partinfo))
 252                         return TRUE;
 253         } while ((partinfo = partinfo->parent) != NULL);
 254
 255         debug_print("mimeview_is_signed: FALSE\n" );
 256
 257         return FALSE;
 258 }
 259
 260 static void set_unchecked_signature(MimeInfo *mimeinfo)
 261 {
 262         MimeInfo *sig_partinfo;
 263
 264         sig_partinfo = rfc2015_find_signature(mimeinfo);
 265         if (sig_partinfo == NULL) return;
 266
 267         g_free(sig_partinfo->sigstatus);
 268         sig_partinfo->sigstatus =
 269                 g_strdup(_("Select \"Check signature\" to check"));
 270
 271         g_free(sig_partinfo->sigstatus_full);
 272         sig_partinfo->sigstatus_full = NULL;
 273 }
 274 #endif /* USE_GPGME */
 275
 276 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 277                            const gchar *file)
 278 {
 279         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 280         GtkCTreeNode *node;
 281         gchar buf[BUFFSIZE];
 282         FILE *fp;
 283
 284         mimeview_clear(mimeview);
 285         textview_clear(mimeview->messageview->textview);
 286
 287         g_return_if_fail(file != NULL);
 288         g_return_if_fail(mimeinfo != NULL);
 289
 290         mimeview->mimeinfo = mimeinfo;
 291
 292         if ((fp = fopen(file, "r")) == NULL) {
 293                 FILE_OP_ERROR(file, "fopen");
 294                 return;
 295         }
 296         mimeview->file = g_strdup(file);
 297
 298         /* skip MIME part headers */
 299         if (mimeinfo->mime_type == MIME_MULTIPART) {
 300                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 301                         perror("fseek");
 302                 while (fgets(buf, sizeof(buf), fp) != NULL)
 303                         if (buf[0] == '\r' || buf[0] == '\n') break;
 304         }
 305
 306         procmime_scan_multipart_message(mimeinfo, fp);
 307 #if USE_GPGME
 308         if (prefs_common.auto_check_signatures)
 309                 rfc2015_check_signature(mimeinfo, fp);
 310         else
 311                 set_unchecked_signature(mimeinfo);
 312 #endif
 313
 314         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 315                                          mimeview);
 316
 317         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 318
 319         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 320                                            mimeview_selected, mimeview);
 321
 322         /* search first text part */
 323         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 324              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 325                 MimeInfo *partinfo;
 326
 327                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 328                 if (partinfo &&
 329                     (partinfo->mime_type == MIME_TEXT ||
 330                      partinfo->mime_type == MIME_TEXT_HTML)) {
 331                         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0)
 332                                 perror("fseek");
 333                         else
 334                                 textview_show_part
 335                                         (mimeview->messageview->textview,
 336                                          partinfo, fp);
 337                         break;
 338                 }
 339         }
 340         fclose(fp);
 341
 342         if (!node)
 343                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 344
 345         if (node) {
 346                 gtk_ctree_select(ctree, node);
 347                 gtkut_ctree_set_focus_row(ctree, node);
 348                 gtk_widget_grab_focus(mimeview->ctree);
 349         }
 350 }
 351
 352 void mimeview_destroy(MimeView *mimeview)
 353 {
 354         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 355         g_free(mimeview->file);
 356         g_free(mimeview);
 357 }
 358
 359 static void mimeview_set_multipart_tree(MimeView *mimeview,
 360                                         MimeInfo *mimeinfo,
 361                                         GtkCTreeNode *parent)
 362 {
 363         GtkCTreeNode *current = parent;
 364
 365         g_return_if_fail(mimeinfo != NULL);
 366
 367         if (!mimeinfo->sub && mimeinfo->parent)
 368                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 369
 370         if (mimeinfo->sub)
 371                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 372
 373         if (mimeinfo->children)
 374                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 375
 376         if (mimeinfo->next)
 377                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 378 }
 379
 380 static gchar *get_part_name(MimeInfo *partinfo)
 381 {
 382 #if USE_GPGME
 383         if (partinfo->sigstatus)
 384                 return partinfo->sigstatus;
 385         else
 386 #endif
 387         if (partinfo->name)
 388                 return partinfo->name;
 389         else if (partinfo->filename)
 390                 return partinfo->filename;
 391         else
 392                 return "";
 393 }
 394
 395 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 396                                           MimeInfo *partinfo,
 397                                           GtkCTreeNode *parent)
 398 {
 399         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 400         GtkCTreeNode *node;
 401         gchar *str[N_MIMEVIEW_COLS];
 402
 403         str[COL_MIMETYPE] =
 404                 partinfo->content_type ? partinfo->content_type : "";
 405         str[COL_SIZE] = to_human_readable(partinfo->size);
 406         str[COL_NAME] = get_part_name(partinfo);
 407
 408         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 409                                      NULL, NULL, NULL, NULL,
 410                                      FALSE, TRUE);
 411         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 412
 413         return node;
 414 }
 415
 416 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 417 {
 418         FILE *fp;
 419         const gchar *fname;
 420 #if USE_GPGME
 421         MimeInfo *pi;
 422 #endif
 423
 424         if (!partinfo) return;
 425
 426 #if USE_GPGME
 427         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 428                 ;
 429         fname = pi ? pi->plaintextfile : mimeview->file;
 430 #else
 431         fname = mimeview->file;
 432 #endif /* USE_GPGME */
 433         if (!fname) return;
 434
 435         if ((fp = fopen(fname, "r")) == NULL) {
 436                 FILE_OP_ERROR(fname, "fopen");
 437                 return;
 438         }
 439
 440         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 441                 FILE_OP_ERROR(mimeview->file, "fseek");
 442                 fclose(fp);
 443                 return;
 444         }
 445
 446         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 447         textview_show_part(mimeview->textview, partinfo, fp);
 448
 449         fclose(fp);
 450 }
 451
 452 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 453 {
 454         gchar *filename;
 455
 456         if (!partinfo) return;
 457
 458         filename = procmime_get_tmp_file_name(partinfo);
 459
 460         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 461                 alertpanel_error
 462                         (_("Can't get the part of multipart message."));
 463         else {
 464                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 465                 /* Workaround for the GTK+ bug with handling scroll adjustments
 466                  * in GtkViewport */
 467                 imageview_clear(mimeview->imageview);
 468                 imageview_show_image(mimeview->imageview, partinfo, filename);
 469                 unlink(filename);
 470         }
 471
 472         g_free(filename);
 473 }
 474
 475 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 476 {
 477         TextView  *textview  = mimeview->textview;
 478         ImageView *imageview = mimeview->imageview;
 479         GList *children;
 480
 481         if (mimeview->type == type) return;
 482
 483         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 484         if (children) {
 485                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 486                                        GTK_WIDGET(children->data));
 487                 g_list_free(children);
 488         }
 489
 490         switch (type) {
 491         case MIMEVIEW_IMAGE:
 492                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 493                                   GTK_WIDGET_PTR(imageview));
 494                 break;
 495         case MIMEVIEW_TEXT:
 496                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 497                                   GTK_WIDGET_PTR(textview));
 498                 break;
 499         default:
 500                 return;
 501         }
 502
 503         mimeview->type = type;
 504 }
 505
 506 static void mimeview_clear(MimeView *mimeview)
 507 {
 508         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 509
 510         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 511         mimeview->mimeinfo = NULL;
 512
 513         gtk_clist_clear(clist);
 514         textview_clear(mimeview->textview);
 515         imageview_clear(mimeview->imageview);
 516
 517         mimeview->opened = NULL;
 518
 519         g_free(mimeview->file);
 520         mimeview->file = NULL;
 521
 522         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 523 }
 524
 525 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 526                               MimeView *mimeview)
 527 {
 528         MimeInfo *partinfo;
 529
 530         if (mimeview->opened == node) return;
 531         mimeview->opened = node;
 532         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 533
 534         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 535         if (!partinfo) return;
 536
 537         /* ungrab the mouse event */
 538         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 539                 gtk_grab_remove(GTK_WIDGET(ctree));
 540                 if (gdk_pointer_is_grabbed())
 541                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 542         }
 543
 544         switch (partinfo->mime_type) {
 545         case MIME_TEXT:
 546         case MIME_TEXT_HTML:
 547         case MIME_TEXT_ENRICHED:
 548         case MIME_MESSAGE_RFC822:
 549         case MIME_MULTIPART:
 550                 mimeview_show_message_part(mimeview, partinfo);
 551                 break;
 552 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 553         case MIME_IMAGE:
 554                 mimeview_show_image_part(mimeview, partinfo);
 555                 break;
 556 #endif
 557         default:
 558                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 559 #if USE_GPGME
 560                 if (g_strcasecmp(partinfo->content_type,
 561                                  "application/pgp-signature") == 0)
 562                         textview_show_signature_part(mimeview->textview,
 563                                                      partinfo);
 564                 else
 565 #endif
 566                         textview_show_mime_part(mimeview->textview, partinfo);
 567                 break;
 568         }
 569 }
 570
 571 static void mimeview_start_drag(GtkWidget *widget, gint button,
 572                                 GdkEvent *event, MimeView *mimeview)
 573 {
 574         GtkTargetList *list;
 575         GdkDragContext *context;
 576         MimeInfo *partinfo;
 577         GtkCTree *ctree;
 578
 579         g_return_if_fail(mimeview != NULL);
 580         ctree = GTK_CTREE(mimeview->ctree);
 581         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 582         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 583
 584         list = gtk_target_list_new(mimeview_mime_types, 1);
 585         context = gtk_drag_begin(widget, list,
 586                                  GDK_ACTION_COPY, button, event);
 587         gtk_drag_set_icon_default(context);
 588 }
 589
 590 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 591                                     MimeView *mimeview)
 592 {
 593         GtkCList *clist = GTK_CLIST(widget);
 594         MimeInfo *partinfo;
 595         gint row, column;
 596
 597         if (!event) return FALSE;
 598
 599         if (event->button == 2 || event->button == 3) {
 600                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 601                                                   &row, &column))
 602                         return FALSE;
 603                 gtk_clist_unselect_all(clist);
 604                 gtk_clist_select_row(clist, row, column);
 605                 gtkut_clist_set_focus_row(clist, row);
 606         }
 607
 608         if (event->button == 2 ||
 609             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 610                 /* call external program for image, audio or html */
 611                 mimeview_launch(mimeview);
 612         } else if (event->button == 3) {
 613                 partinfo = gtk_ctree_node_get_row_data
 614                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 615                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 616                                  partinfo->mime_type == MIME_TEXT_HTML ||
 617                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 618                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 619                                  partinfo->mime_type == MIME_IMAGE ||
 620                                  partinfo->mime_type == MIME_MULTIPART))
 621                         menu_set_sensitive(mimeview->popupfactory,
 622                                            "/Display as text", FALSE);
 623                 else
 624                         menu_set_sensitive(mimeview->popupfactory,
 625                                            "/Display as text", TRUE);
 626                 if (partinfo &&
 627                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 628                         menu_set_sensitive(mimeview->popupfactory,
 629                                            "/Open", FALSE);
 630                 else
 631                         menu_set_sensitive(mimeview->popupfactory,
 632                                            "/Open", TRUE);
 633 #if USE_GPGME
 634                 menu_set_sensitive(mimeview->popupfactory,
 635                                    "/Check signature",
 636                                    mimeview_is_signed(mimeview));
 637 #endif
 638
 639                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 640                                NULL, NULL, NULL, NULL,
 641                                event->button, event->time);
 642         }
 643
 644         return TRUE;
 645 }
 646
 647 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 648 {
 649         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 650 }
 651
 652 #define BREAK_ON_MODIFIER_KEY() \
 653         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 654
 655 #define KEY_PRESS_EVENT_STOP() \
 656         if (gtk_signal_n_emissions_by_name \
 657                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 658                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 659                                              "key_press_event"); \
 660         }
 661
 662 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 663                                  MimeView *mimeview)
 664 {
 665         SummaryView *summaryview;
 666         GtkCTree *ctree = GTK_CTREE(widget);
 667         GtkCTreeNode *node;
 668
 669         if (!event) return FALSE;
 670         if (!mimeview->opened) return FALSE;
 671
 672         switch (event->keyval) {
 673         case GDK_space:
 674                 if (textview_scroll_page(mimeview->textview, FALSE))
 675                         return TRUE;
 676
 677                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 678                 if (node) {
 679                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 680                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 681                         return TRUE;
 682                 }
 683                 break;
 684         case GDK_BackSpace:
 685                 textview_scroll_page(mimeview->textview, TRUE);
 686                 return TRUE;
 687         case GDK_Return:
 688                 textview_scroll_one_line(mimeview->textview,
 689                                          (event->state & GDK_MOD1_MASK) != 0);
 690                 return TRUE;
 691         case GDK_n:
 692         case GDK_N:
 693                 BREAK_ON_MODIFIER_KEY();
 694                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 695                 KEY_PRESS_EVENT_STOP();
 696
 697                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 698                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 699                 return TRUE;
 700         case GDK_p:
 701         case GDK_P:
 702                 BREAK_ON_MODIFIER_KEY();
 703                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 704                 KEY_PRESS_EVENT_STOP();
 705
 706                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 707                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 708                 return TRUE;
 709         case GDK_y:
 710                 BREAK_ON_MODIFIER_KEY();
 711                 KEY_PRESS_EVENT_STOP();
 712                 mimeview_save_as(mimeview);
 713                 return TRUE;
 714         case GDK_t:
 715                 BREAK_ON_MODIFIER_KEY();
 716                 KEY_PRESS_EVENT_STOP();
 717                 mimeview_display_as_text(mimeview);
 718                 return TRUE;
 719         case GDK_l:
 720                 BREAK_ON_MODIFIER_KEY();
 721                 KEY_PRESS_EVENT_STOP();
 722                 mimeview_launch(mimeview);
 723                 return TRUE;
 724         default:
 725         }
 726
 727         if (!mimeview->messageview->mainwin) return FALSE;
 728         summaryview = mimeview->messageview->mainwin->summaryview;
 729         summary_pass_key_press_event(summaryview, event);
 730         return TRUE;
 731 }
 732
 733 static void mimeview_drag_data_get(GtkWidget        *widget,
 734                                    GdkDragContext   *drag_context,
 735                                    GtkSelectionData *selection_data,
 736                                    guint             info,
 737                                    guint             time,
 738                                    MimeView         *mimeview)
 739 {
 740         gchar *filename, *uriname;
 741         MimeInfo *partinfo;
 742
 743         if (!mimeview->opened) return;
 744         if (!mimeview->file) return;
 745
 746         partinfo = gtk_ctree_node_get_row_data
 747                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 748         if (!partinfo) return;
 749         if (!partinfo->filename && !partinfo->name) return;
 750
 751         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 752         filename = g_basename(filename);
 753         if (*filename == '\0') return;
 754
 755         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 756                                filename, NULL);
 757
 758         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 759                 alertpanel_error
 760                         (_("Can't save the part of multipart message."));
 761
 762         uriname = g_strconcat("file:/", filename, NULL);
 763         gtk_selection_data_set(selection_data, selection_data->target, 8,
 764                                uriname, strlen(uriname));
 765
 766         g_free(uriname);
 767         g_free(filename);
 768 }
 769
 770 static void mimeview_display_as_text(MimeView *mimeview)
 771 {
 772         MimeInfo *partinfo;
 773
 774         if (!mimeview->opened) return;
 775
 776         partinfo = gtk_ctree_node_get_row_data
 777                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 778         mimeview_show_message_part(mimeview, partinfo);
 779 }
 780
 781 static void mimeview_save_as(MimeView *mimeview)
 782 {
 783         gchar *filename;
 784         gchar *defname = NULL;
 785         MimeInfo *partinfo;
 786
 787         if (!mimeview->opened) return;
 788         if (!mimeview->file) return;
 789
 790         partinfo = gtk_ctree_node_get_row_data
 791                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 792         g_return_if_fail(partinfo != NULL);
 793
 794         if (partinfo->filename)
 795                 defname = partinfo->filename;
 796         else if (partinfo->name) {
 797                 Xstrdup_a(defname, partinfo->name, return);
 798                 subst_for_filename(defname);
 799         }
 800
 801         filename = filesel_select_file(_("Save as"), defname);
 802         if (!filename) return;
 803         if (is_file_exist(filename)) {
 804                 AlertValue aval;
 805
 806                 aval = alertpanel(_("Overwrite"),
 807                                   _("Overwrite existing file?"),
 808                                   _("OK"), _("Cancel"), NULL);
 809                 if (G_ALERTDEFAULT != aval) return;
 810         }
 811
 812         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 813                 alertpanel_error
 814                         (_("Can't save the part of multipart message."));
 815 }
 816
 817 static void mimeview_launch(MimeView *mimeview)
 818 {
 819         MimeInfo *partinfo;
 820         gchar *filename;
 821
 822         if (!mimeview->opened) return;
 823         if (!mimeview->file) return;
 824
 825         partinfo = gtk_ctree_node_get_row_data
 826                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 827         g_return_if_fail(partinfo != NULL);
 828
 829         filename = procmime_get_tmp_file_name(partinfo);
 830
 831         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 832                 alertpanel_error
 833                         (_("Can't save the part of multipart message."));
 834         else
 835                 mimeview_view_file(filename, partinfo, NULL);
 836
 837         g_free(filename);
 838 }
 839
 840 static void mimeview_open_with(MimeView *mimeview)
 841 {
 842         MimeInfo *partinfo;
 843         gchar *filename;
 844         gchar *cmd;
 845
 846         if (!mimeview->opened) return;
 847         if (!mimeview->file) return;
 848
 849         partinfo = gtk_ctree_node_get_row_data
 850                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 851         g_return_if_fail(partinfo != NULL);
 852
 853         filename = procmime_get_tmp_file_name(partinfo);
 854
 855         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 856                 alertpanel_error
 857                         (_("Can't save the part of multipart message."));
 858                 g_free(filename);
 859                 return;
 860         }
 861
 862         if (!prefs_common.mime_open_cmd_history)
 863                 prefs_common.mime_open_cmd_history =
 864                         add_history(NULL, prefs_common.mime_open_cmd);
 865
 866         cmd = input_dialog_combo
 867                 (_("Open with"),
 868                  _("Enter the command line to open file:\n"
 869                    "(`%s' will be replaced with file name)"),
 870                  prefs_common.mime_open_cmd,
 871                  prefs_common.mime_open_cmd_history);
 872         if (cmd) {
 873                 mimeview_view_file(filename, partinfo, cmd);
 874                 g_free(prefs_common.mime_open_cmd);
 875                 prefs_common.mime_open_cmd = cmd;
 876                 prefs_common.mime_open_cmd_history =
 877                         add_history(prefs_common.mime_open_cmd_history, cmd);
 878         }
 879
 880         g_free(filename);
 881 }
 882
 883 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 884                                const gchar *cmdline)
 885 {
 886         static gchar *default_image_cmdline = "display '%s'";
 887         static gchar *default_audio_cmdline = "play '%s'";
 888         static gchar *default_html_cmdline =
 889                 "netscape -remote 'openURL(%s,raise)'";
 890         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 891         gchar buf[1024];
 892         gchar m_buf[1024];
 893         const gchar *cmd;
 894         const gchar *def_cmd;
 895         const gchar *p;
 896
 897         if (cmdline) {
 898                 cmd = cmdline;
 899                 def_cmd = NULL;
 900         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 901                 return;
 902         } else if (MIME_IMAGE == partinfo->mime_type) {
 903                 cmd = prefs_common.mime_image_viewer;
 904                 def_cmd = default_image_cmdline;
 905         } else if (MIME_AUDIO == partinfo->mime_type) {
 906                 cmd = prefs_common.mime_audio_player;
 907                 def_cmd = default_audio_cmdline;
 908         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 909                 cmd = prefs_common.uri_cmd;
 910                 def_cmd = default_html_cmdline;
 911         } else {
 912                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
 913                            partinfo->content_type, "%s");
 914                 cmd = m_buf;
 915                 def_cmd = NULL;
 916         }
 917
 918         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
 919             !strchr(p + 2, '%'))
 920                 g_snprintf(buf, sizeof(buf), cmd, filename);
 921         else {
 922                 if (cmd)
 923                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
 924                 if (def_cmd)
 925                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
 926                 else
 927                         return;
 928         }
 929
 930         execute_command_line(buf, TRUE);
 931 }
 932
 933 #if USE_GPGME
 934 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
 935                              gpointer data)
 936 {
 937         MimeInfo *partinfo;
 938         gchar *part_name;
 939
 940         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 941         g_return_if_fail(partinfo != NULL);
 942
 943         part_name = get_part_name(partinfo);
 944         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
 945 }
 946
 947 static void mimeview_update_names(MimeView *mimeview)
 948 {
 949         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 950
 951         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
 952 }
 953
 954 static void mimeview_update_signature_info(MimeView *mimeview)
 955 {
 956         MimeInfo *partinfo;
 957
 958         if (!mimeview) return;
 959         if (!mimeview->opened) return;
 960
 961         partinfo = gtk_ctree_node_get_row_data
 962                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 963         if (!partinfo) return;
 964
 965         if (g_strcasecmp(partinfo->content_type,
 966                          "application/pgp-signature") == 0) {
 967                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 968                 textview_show_signature_part(mimeview->textview, partinfo);
 969         }
 970 }
 971
 972 static void mimeview_check_signature(MimeView *mimeview)
 973 {
 974         MimeInfo *mimeinfo;
 975         gchar buf[BUFFSIZE];
 976         FILE *fp;
 977
 978         g_return_if_fail (mimeview_is_signed(mimeview));
 979
 980         mimeinfo = gtk_ctree_node_get_row_data
 981                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 982         g_return_if_fail(mimeinfo != NULL);
 983         g_return_if_fail(mimeview->file != NULL);
 984
 985         while (mimeinfo->parent)
 986                 mimeinfo = mimeinfo->parent;
 987
 988         if ((fp = fopen(mimeview->file, "r")) == NULL) {
 989                 FILE_OP_ERROR(mimeview->file, "fopen");
 990                 return;
 991         }
 992
 993         /* skip headers */
 994         if (mimeinfo->mime_type == MIME_MULTIPART) {
 995                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 996                 FILE_OP_ERROR(mimeview->file, "fseek");
 997                 while (fgets(buf, sizeof(buf), fp) != NULL)
 998                         if (buf[0] == '\r' || buf[0] == '\n') break;
 999         }
1000
1001         procmime_scan_multipart_message(mimeinfo, fp);
1002         rfc2015_check_signature(mimeinfo, fp);
1003         fclose(fp);
1004
1005         mimeview_update_names(mimeview);
1006         mimeview_update_signature_info(mimeview);
1007 }
1008 #endif /* USE_GPGME */