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_show_image         (MimeView       *mimeview);
 104 static void mimeview_save_as            (MimeView       *mimeview);
 105 static void mimeview_launch             (MimeView       *mimeview);
 106 static void mimeview_open_with          (MimeView       *mimeview);
 107 static void mimeview_view_file          (const gchar    *filename,
 108                                          MimeInfo       *partinfo,
 109                                          const gchar    *cmdline);
 110 #if USE_GPGME
 111 static void mimeview_check_signature    (MimeView       *mimeview);
 112 #endif
 113
 114 static GtkItemFactoryEntry mimeview_popup_entries[] =
 115 {
 116         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 117         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 118         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 119         {N_("/_Display image"),   NULL, mimeview_show_image,      0, NULL},
 120         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL}
 121 #if USE_GPGME
 122         ,
 123         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 124 #endif
 125 };
 126
 127 static GtkTargetEntry mimeview_mime_types[] =
 128 {
 129         {"text/uri-list", 0, 0}
 130 };
 131
 132 MimeView *mimeview_create(void)
 133 {
 134         MimeView *mimeview;
 135
 136         GtkWidget *notebook;
 137         GtkWidget *vbox;
 138         GtkWidget *paned;
 139         GtkWidget *scrolledwin;
 140         GtkWidget *ctree;
 141         GtkWidget *mime_vbox;
 142         GtkWidget *popupmenu;
 143         GtkItemFactory *popupfactory;
 144         gchar *titles[N_MIMEVIEW_COLS];
 145         gint n_entries;
 146         gint i;
 147
 148         debug_print(_("Creating MIME view...\n"));
 149         mimeview = g_new0(MimeView, 1);
 150
 151         titles[COL_MIMETYPE] = _("MIME Type");
 152         titles[COL_SIZE]     = _("Size");
 153         titles[COL_NAME]     = _("Name");
 154
 155         notebook = gtk_notebook_new();
 156         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 157
 158         vbox = gtk_vbox_new(FALSE, 0);
 159         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 160         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 161                                         _("Text"));
 162
 163         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 164         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 165                                        GTK_POLICY_AUTOMATIC,
 166                                        GTK_POLICY_ALWAYS);
 167         gtk_widget_set_usize(scrolledwin, -1, 80);
 168
 169         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 170         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 171         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 172         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 173                                            GTK_JUSTIFY_RIGHT);
 174         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 175         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 176         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 177                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 178                                        GTK_CAN_FOCUS);
 179         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 180
 181         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 182                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 183         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 184                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 185         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 186                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 187         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 188                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 189         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 190                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 191
 192         mime_vbox = gtk_vbox_new(FALSE, 0);
 193
 194         paned = gtk_vpaned_new();
 195         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 196         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 197         gtk_container_add(GTK_CONTAINER(notebook), paned);
 198         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 199                                         _("Attachments"));
 200
 201         gtk_widget_show_all(notebook);
 202
 203         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 204
 205         n_entries = sizeof(mimeview_popup_entries) /
 206                 sizeof(mimeview_popup_entries[0]);
 207         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 208                                       "<MimeView>", &popupfactory, mimeview);
 209
 210         mimeview->notebook     = notebook;
 211         mimeview->vbox         = vbox;
 212         mimeview->paned        = paned;
 213         mimeview->scrolledwin  = scrolledwin;
 214         mimeview->ctree        = ctree;
 215         mimeview->mime_vbox    = mime_vbox;
 216         mimeview->popupmenu    = popupmenu;
 217         mimeview->popupfactory = popupfactory;
 218         mimeview->type         = -1;
 219
 220         return mimeview;
 221 }
 222
 223 void mimeview_init(MimeView *mimeview)
 224 {
 225 }
 226
 227 /*
 228  * Check whether the message is OpenPGP signed
 229  */
 230 #if USE_GPGME
 231 static gboolean mimeview_is_signed(MimeView *mimeview)
 232 {
 233         MimeInfo *partinfo = NULL;
 234
 235         debug_print("mimeview_is signed of %p\n", mimeview);
 236
 237         if (!mimeview) return FALSE;
 238         if (!mimeview->opened) return FALSE;
 239
 240         debug_print("mimeview_is_signed: open\n" );
 241
 242         if (!mimeview->file) return FALSE;
 243
 244         debug_print("mimeview_is_signed: file\n" );
 245
 246         partinfo = gtk_ctree_node_get_row_data
 247                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 248         g_return_val_if_fail(partinfo != NULL, FALSE);
 249
 250         /* walk the tree and see whether there is a signature somewhere */
 251         do {
 252                 if (rfc2015_has_signature(partinfo))
 253                         return TRUE;
 254         } while ((partinfo = partinfo->parent) != NULL);
 255
 256         debug_print("mimeview_is_signed: FALSE\n" );
 257
 258         return FALSE;
 259 }
 260
 261 static void set_unchecked_signature(MimeInfo *mimeinfo)
 262 {
 263         MimeInfo *sig_partinfo;
 264
 265         sig_partinfo = rfc2015_find_signature(mimeinfo);
 266         if (sig_partinfo == NULL) return;
 267
 268         g_free(sig_partinfo->sigstatus);
 269         sig_partinfo->sigstatus =
 270                 g_strdup(_("Select \"Check signature\" to check"));
 271
 272         g_free(sig_partinfo->sigstatus_full);
 273         sig_partinfo->sigstatus_full = NULL;
 274 }
 275 #endif /* USE_GPGME */
 276
 277 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 278                            const gchar *file)
 279 {
 280         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 281         GtkCTreeNode *node;
 282         gchar buf[BUFFSIZE];
 283         FILE *fp;
 284
 285         mimeview_clear(mimeview);
 286         textview_clear(mimeview->messageview->textview);
 287
 288         g_return_if_fail(file != NULL);
 289         g_return_if_fail(mimeinfo != NULL);
 290
 291         mimeview->mimeinfo = mimeinfo;
 292
 293         if ((fp = fopen(file, "rb")) == NULL) {
 294                 FILE_OP_ERROR(file, "fopen");
 295                 return;
 296         }
 297         mimeview->file = g_strdup(file);
 298
 299         /* skip MIME part headers */
 300         if (mimeinfo->mime_type == MIME_MULTIPART) {
 301                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 302                         perror("fseek");
 303                 while (fgets(buf, sizeof(buf), fp) != NULL)
 304                         if (buf[0] == '\r' || buf[0] == '\n') break;
 305         }
 306
 307         procmime_scan_multipart_message(mimeinfo, fp);
 308 #if USE_GPGME
 309         if (prefs_common.auto_check_signatures)
 310                 rfc2015_check_signature(mimeinfo, fp);
 311         else
 312                 set_unchecked_signature(mimeinfo);
 313 #endif
 314
 315         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 316                                          mimeview);
 317
 318         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 319
 320         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 321                                            mimeview_selected, mimeview);
 322
 323         /* search first text part */
 324         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 325              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 326                 MimeInfo *partinfo;
 327
 328                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 329                 if (partinfo &&
 330                     (partinfo->mime_type == MIME_TEXT ||
 331                      partinfo->mime_type == MIME_TEXT_HTML))
 332                         break;
 333         }
 334         fclose(fp);
 335         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 336
 337         if (!node)
 338                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 339
 340         if (node) {
 341                 gtk_ctree_select(ctree, node);
 342                 gtkut_ctree_set_focus_row(ctree, node);
 343                 gtk_widget_grab_focus(mimeview->ctree);
 344         }
 345 }
 346
 347 void mimeview_destroy(MimeView *mimeview)
 348 {
 349         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 350         g_free(mimeview->file);
 351         g_free(mimeview);
 352 }
 353
 354 static void mimeview_set_multipart_tree(MimeView *mimeview,
 355                                         MimeInfo *mimeinfo,
 356                                         GtkCTreeNode *parent)
 357 {
 358         GtkCTreeNode *current = parent;
 359
 360         g_return_if_fail(mimeinfo != NULL);
 361
 362         if (!mimeinfo->sub && mimeinfo->parent)
 363                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 364         if (mimeinfo->sub && !mimeinfo->sub->children &&
 365             mimeinfo->sub->mime_type != MIME_TEXT &&
 366             mimeinfo->sub->mime_type != MIME_TEXT_HTML) {
 367                 mimeview_append_part(mimeview, mimeinfo->sub, parent);
 368                 return;
 369         }
 370
 371         if (mimeinfo->sub)
 372                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 373
 374         if (mimeinfo->children)
 375                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 376
 377         if (mimeinfo->next)
 378                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 379 }
 380
 381 static gchar *get_part_name(MimeInfo *partinfo)
 382 {
 383 #if USE_GPGME
 384         if (partinfo->sigstatus)
 385                 return partinfo->sigstatus;
 386         else
 387 #endif
 388         if (partinfo->name)
 389                 return partinfo->name;
 390         else if (partinfo->filename)
 391                 return partinfo->filename;
 392         else
 393                 return "";
 394 }
 395
 396 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 397                                           MimeInfo *partinfo,
 398                                           GtkCTreeNode *parent)
 399 {
 400         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 401         GtkCTreeNode *node;
 402         gchar *str[N_MIMEVIEW_COLS];
 403
 404         str[COL_MIMETYPE] =
 405                 partinfo->content_type ? partinfo->content_type : "";
 406         str[COL_SIZE] = to_human_readable(partinfo->size);
 407         str[COL_NAME] = get_part_name(partinfo);
 408
 409         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 410                                      NULL, NULL, NULL, NULL,
 411                                      FALSE, TRUE);
 412         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 413
 414         return node;
 415 }
 416
 417 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 418 {
 419         FILE *fp;
 420         const gchar *fname;
 421 #if USE_GPGME
 422         MimeInfo *pi;
 423 #endif
 424
 425         if (!partinfo) return;
 426
 427 #if USE_GPGME
 428         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 429                 ;
 430         fname = pi ? pi->plaintextfile : mimeview->file;
 431 #else
 432         fname = mimeview->file;
 433 #endif /* USE_GPGME */
 434         if (!fname) return;
 435
 436         if ((fp = fopen(fname, "rb")) == NULL) {
 437                 FILE_OP_ERROR(fname, "fopen");
 438                 return;
 439         }
 440
 441         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 442                 FILE_OP_ERROR(mimeview->file, "fseek");
 443                 fclose(fp);
 444                 return;
 445         }
 446
 447         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 448         textview_show_part(mimeview->textview, partinfo, fp);
 449
 450         fclose(fp);
 451 }
 452
 453 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 454 {
 455         gchar *filename;
 456
 457         if (!partinfo) return;
 458
 459         filename = procmime_get_tmp_file_name(partinfo);
 460
 461         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 462                 alertpanel_error
 463                         (_("Can't get the part of multipart message."));
 464         else {
 465                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 466                 /* Workaround for the GTK+ bug with handling scroll adjustments
 467                  * in GtkViewport */
 468                 imageview_clear(mimeview->imageview);
 469                 imageview_show_image(mimeview->imageview, partinfo, filename);
 470                 unlink(filename);
 471         }
 472
 473         g_free(filename);
 474 }
 475
 476 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 477 {
 478         TextView  *textview  = mimeview->textview;
 479         ImageView *imageview = mimeview->imageview;
 480         GList *children;
 481
 482         if (mimeview->type == type) return;
 483
 484         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 485         if (children) {
 486                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 487                                        GTK_WIDGET(children->data));
 488                 g_list_free(children);
 489         }
 490
 491         switch (type) {
 492         case MIMEVIEW_IMAGE:
 493                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 494                                   GTK_WIDGET_PTR(imageview));
 495                 break;
 496         case MIMEVIEW_TEXT:
 497                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 498                                   GTK_WIDGET_PTR(textview));
 499                 break;
 500         default:
 501                 return;
 502         }
 503
 504         mimeview->type = type;
 505 }
 506
 507 static void mimeview_clear(MimeView *mimeview)
 508 {
 509         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 510
 511         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 512         mimeview->mimeinfo = NULL;
 513
 514         gtk_clist_clear(clist);
 515         textview_clear(mimeview->textview);
 516         imageview_clear(mimeview->imageview);
 517
 518         mimeview->opened = NULL;
 519
 520         g_free(mimeview->file);
 521         mimeview->file = NULL;
 522
 523         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 524 }
 525
 526 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 527                               MimeView *mimeview)
 528 {
 529         MimeInfo *partinfo;
 530
 531         if (mimeview->opened == node) return;
 532         mimeview->opened = node;
 533         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 534
 535         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 536         if (!partinfo) return;
 537
 538         /* ungrab the mouse event */
 539         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 540                 gtk_grab_remove(GTK_WIDGET(ctree));
 541                 if (gdk_pointer_is_grabbed())
 542                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 543         }
 544
 545         mimeview->textview->default_text = FALSE;
 546
 547         switch (partinfo->mime_type) {
 548         case MIME_TEXT:
 549         case MIME_TEXT_HTML:
 550         case MIME_TEXT_ENRICHED:
 551         case MIME_MESSAGE_RFC822:
 552         case MIME_MULTIPART:
 553                 mimeview_show_message_part(mimeview, partinfo);
 554
 555                 break;
 556 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 557         case MIME_IMAGE:
 558                 mimeview->textview->default_text = TRUE;
 559                 if (prefs_common.display_img)
 560                         mimeview_show_image_part(mimeview, partinfo);
 561                 else {
 562                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 563                         textview_show_mime_part(mimeview->textview, partinfo);
 564                 }
 565                 break;
 566 #endif
 567         default:
 568                 mimeview->textview->default_text = TRUE;
 569                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 570 #if USE_GPGME
 571                 if (g_strcasecmp(partinfo->content_type,
 572                                  "application/pgp-signature") == 0)
 573                         textview_show_signature_part(mimeview->textview,
 574                                                      partinfo);
 575                 else
 576 #endif
 577                         textview_show_mime_part(mimeview->textview, partinfo);
 578                 break;
 579         }
 580 }
 581
 582 static void mimeview_start_drag(GtkWidget *widget, gint button,
 583                                 GdkEvent *event, MimeView *mimeview)
 584 {
 585         GtkTargetList *list;
 586         GdkDragContext *context;
 587         MimeInfo *partinfo;
 588         GtkCTree *ctree;
 589
 590         g_return_if_fail(mimeview != NULL);
 591         ctree = GTK_CTREE(mimeview->ctree);
 592         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 593         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 594
 595         list = gtk_target_list_new(mimeview_mime_types, 1);
 596         context = gtk_drag_begin(widget, list,
 597                                  GDK_ACTION_COPY, button, event);
 598         gtk_drag_set_icon_default(context);
 599 }
 600
 601 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 602                                     MimeView *mimeview)
 603 {
 604         GtkCList *clist = GTK_CLIST(widget);
 605         MimeInfo *partinfo;
 606         gint row, column;
 607
 608         if (!event) return FALSE;
 609
 610         if (event->button == 2 || event->button == 3) {
 611                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 612                                                   &row, &column))
 613                         return FALSE;
 614                 gtk_clist_unselect_all(clist);
 615                 gtk_clist_select_row(clist, row, column);
 616                 gtkut_clist_set_focus_row(clist, row);
 617         }
 618
 619         if (event->button == 2 ||
 620             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 621                 /* call external program for image, audio or html */
 622                 mimeview_launch(mimeview);
 623         } else if (event->button == 3) {
 624                 partinfo = gtk_ctree_node_get_row_data
 625                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 626                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 627                                  partinfo->mime_type == MIME_TEXT_HTML ||
 628                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 629                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 630                                  partinfo->mime_type == MIME_IMAGE ||
 631                                  partinfo->mime_type == MIME_MULTIPART))
 632                         menu_set_sensitive(mimeview->popupfactory,
 633                                            "/Display as text", FALSE);
 634                 else
 635                         menu_set_sensitive(mimeview->popupfactory,
 636                                            "/Display as text", TRUE);
 637                 if (partinfo &&
 638                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 639                         menu_set_sensitive(mimeview->popupfactory,
 640                                            "/Open", FALSE);
 641                 else
 642                         menu_set_sensitive(mimeview->popupfactory,
 643                                            "/Open", TRUE);
 644
 645 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 646                 if (partinfo && (partinfo->mime_type == MIME_IMAGE))
 647                         menu_set_sensitive(mimeview->popupfactory,
 648                                            "/Display image", TRUE);
 649 #endif
 650 #if USE_GPGME
 651                 menu_set_sensitive(mimeview->popupfactory,
 652                                    "/Check signature",
 653                                    mimeview_is_signed(mimeview));
 654 #endif
 655
 656                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 657                                NULL, NULL, NULL, NULL,
 658                                event->button, event->time);
 659         }
 660
 661         return TRUE;
 662 }
 663
 664 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 665 {
 666         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 667 }
 668
 669 #define BREAK_ON_MODIFIER_KEY() \
 670         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 671
 672 #define KEY_PRESS_EVENT_STOP() \
 673         if (gtk_signal_n_emissions_by_name \
 674                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 675                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 676                                              "key_press_event"); \
 677         }
 678
 679 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 680                                  MimeView *mimeview)
 681 {
 682         SummaryView *summaryview;
 683         GtkCTree *ctree = GTK_CTREE(widget);
 684         GtkCTreeNode *node;
 685
 686         if (!event) return FALSE;
 687         if (!mimeview->opened) return FALSE;
 688
 689         switch (event->keyval) {
 690         case GDK_space:
 691                 if (textview_scroll_page(mimeview->textview, FALSE))
 692                         return TRUE;
 693
 694                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 695                 if (node) {
 696                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 697                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 698                         return TRUE;
 699                 }
 700                 break;
 701         case GDK_BackSpace:
 702                 textview_scroll_page(mimeview->textview, TRUE);
 703                 return TRUE;
 704         case GDK_Return:
 705                 textview_scroll_one_line(mimeview->textview,
 706                                          (event->state & GDK_MOD1_MASK) != 0);
 707                 return TRUE;
 708         case GDK_n:
 709         case GDK_N:
 710                 BREAK_ON_MODIFIER_KEY();
 711                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 712                 KEY_PRESS_EVENT_STOP();
 713
 714                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 715                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 716                 return TRUE;
 717         case GDK_p:
 718         case GDK_P:
 719                 BREAK_ON_MODIFIER_KEY();
 720                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 721                 KEY_PRESS_EVENT_STOP();
 722
 723                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 724                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 725                 return TRUE;
 726         case GDK_y:
 727                 BREAK_ON_MODIFIER_KEY();
 728                 KEY_PRESS_EVENT_STOP();
 729                 mimeview_save_as(mimeview);
 730                 return TRUE;
 731         case GDK_t:
 732                 BREAK_ON_MODIFIER_KEY();
 733                 KEY_PRESS_EVENT_STOP();
 734                 mimeview_display_as_text(mimeview);
 735                 return TRUE;
 736         case GDK_i:
 737                 BREAK_ON_MODIFIER_KEY();
 738                 KEY_PRESS_EVENT_STOP();
 739                 mimeview_show_image(mimeview);
 740                 return TRUE;
 741         case GDK_l:
 742                 BREAK_ON_MODIFIER_KEY();
 743                 KEY_PRESS_EVENT_STOP();
 744                 mimeview_launch(mimeview);
 745                 return TRUE;
 746         default:
 747                 break;
 748         }
 749
 750         if (!mimeview->messageview->mainwin) return FALSE;
 751         summaryview = mimeview->messageview->mainwin->summaryview;
 752         summary_pass_key_press_event(summaryview, event);
 753         return TRUE;
 754 }
 755
 756 static void mimeview_drag_data_get(GtkWidget        *widget,
 757                                    GdkDragContext   *drag_context,
 758                                    GtkSelectionData *selection_data,
 759                                    guint             info,
 760                                    guint             time,
 761                                    MimeView         *mimeview)
 762 {
 763         gchar *filename, *uriname;
 764         MimeInfo *partinfo;
 765
 766         if (!mimeview->opened) return;
 767         if (!mimeview->file) return;
 768
 769         partinfo = gtk_ctree_node_get_row_data
 770                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 771         if (!partinfo) return;
 772         if (!partinfo->filename && !partinfo->name) return;
 773
 774         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 775         filename = g_basename(filename);
 776         if (*filename == '\0') return;
 777
 778         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 779                                filename, NULL);
 780
 781         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 782                 alertpanel_error
 783                         (_("Can't save the part of multipart message."));
 784
 785         uriname = g_strconcat("file:/", filename, NULL);
 786         gtk_selection_data_set(selection_data, selection_data->target, 8,
 787                                uriname, strlen(uriname));
 788
 789         g_free(uriname);
 790         g_free(filename);
 791 }
 792
 793 static void mimeview_display_as_text(MimeView *mimeview)
 794 {
 795         MimeInfo *partinfo;
 796
 797         if (!mimeview->opened) return;
 798
 799         partinfo = gtk_ctree_node_get_row_data
 800                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 801         mimeview_show_message_part(mimeview, partinfo);
 802 }
 803
 804 static void mimeview_show_image(MimeView *mimeview)
 805 {
 806         MimeInfo *partinfo;
 807
 808         if (!mimeview->opened) return;
 809
 810         partinfo = gtk_ctree_node_get_row_data
 811                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 812         mimeview_show_image_part(mimeview, partinfo);
 813 }
 814
 815 static void mimeview_save_as(MimeView *mimeview)
 816 {
 817         gchar *filename;
 818         gchar *defname = NULL;
 819         MimeInfo *partinfo;
 820
 821         if (!mimeview->opened) return;
 822         if (!mimeview->file) return;
 823
 824         partinfo = gtk_ctree_node_get_row_data
 825                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 826         g_return_if_fail(partinfo != NULL);
 827
 828         if (partinfo->filename)
 829                 defname = partinfo->filename;
 830         else if (partinfo->name) {
 831                 Xstrdup_a(defname, partinfo->name, return);
 832                 subst_for_filename(defname);
 833         }
 834
 835         filename = filesel_select_file(_("Save as"), defname);
 836         if (!filename) return;
 837         if (is_file_exist(filename)) {
 838                 AlertValue aval;
 839
 840                 aval = alertpanel(_("Overwrite"),
 841                                   _("Overwrite existing file?"),
 842                                   _("OK"), _("Cancel"), NULL);
 843                 if (G_ALERTDEFAULT != aval) return;
 844         }
 845
 846         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 847                 alertpanel_error
 848                         (_("Can't save the part of multipart message."));
 849 }
 850
 851 static void mimeview_launch(MimeView *mimeview)
 852 {
 853         MimeInfo *partinfo;
 854         gchar *filename;
 855
 856         if (!mimeview->opened) return;
 857         if (!mimeview->file) return;
 858
 859         partinfo = gtk_ctree_node_get_row_data
 860                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 861         g_return_if_fail(partinfo != NULL);
 862
 863         filename = procmime_get_tmp_file_name(partinfo);
 864
 865         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 866                 alertpanel_error
 867                         (_("Can't save the part of multipart message."));
 868         else
 869                 mimeview_view_file(filename, partinfo, NULL);
 870
 871         g_free(filename);
 872 }
 873
 874 static void mimeview_open_with(MimeView *mimeview)
 875 {
 876         MimeInfo *partinfo;
 877         gchar *filename;
 878         gchar *cmd;
 879
 880         if (!mimeview->opened) return;
 881         if (!mimeview->file) return;
 882
 883         partinfo = gtk_ctree_node_get_row_data
 884                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 885         g_return_if_fail(partinfo != NULL);
 886
 887         filename = procmime_get_tmp_file_name(partinfo);
 888
 889         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 890                 alertpanel_error
 891                         (_("Can't save the part of multipart message."));
 892                 g_free(filename);
 893                 return;
 894         }
 895
 896         if (!prefs_common.mime_open_cmd_history)
 897                 prefs_common.mime_open_cmd_history =
 898                         add_history(NULL, prefs_common.mime_open_cmd);
 899
 900         cmd = input_dialog_combo
 901                 (_("Open with"),
 902                  _("Enter the command line to open file:\n"
 903                    "(`%s' will be replaced with file name)"),
 904                  prefs_common.mime_open_cmd,
 905                  prefs_common.mime_open_cmd_history,
 906                  TRUE);
 907         if (cmd) {
 908                 mimeview_view_file(filename, partinfo, cmd);
 909                 g_free(prefs_common.mime_open_cmd);
 910                 prefs_common.mime_open_cmd = cmd;
 911                 prefs_common.mime_open_cmd_history =
 912                         add_history(prefs_common.mime_open_cmd_history, cmd);
 913         }
 914
 915         g_free(filename);
 916 }
 917
 918 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 919                                const gchar *cmdline)
 920 {
 921         static gchar *default_image_cmdline = "display '%s'";
 922         static gchar *default_audio_cmdline = "play '%s'";
 923         static gchar *default_html_cmdline =
 924                 "netscape -remote 'openURL(%s,raise)'";
 925         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 926         gchar buf[1024];
 927         gchar m_buf[1024];
 928         const gchar *cmd;
 929         const gchar *def_cmd;
 930         const gchar *p;
 931
 932         if (cmdline) {
 933                 cmd = cmdline;
 934                 def_cmd = NULL;
 935         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 936                 return;
 937         } else if (MIME_IMAGE == partinfo->mime_type) {
 938                 cmd = prefs_common.mime_image_viewer;
 939                 def_cmd = default_image_cmdline;
 940         } else if (MIME_AUDIO == partinfo->mime_type) {
 941                 cmd = prefs_common.mime_audio_player;
 942                 def_cmd = default_audio_cmdline;
 943         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 944                 cmd = prefs_common.uri_cmd;
 945                 def_cmd = default_html_cmdline;
 946         } else {
 947                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
 948                            partinfo->content_type, "%s");
 949                 cmd = m_buf;
 950                 def_cmd = NULL;
 951         }
 952
 953         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
 954             !strchr(p + 2, '%'))
 955                 g_snprintf(buf, sizeof(buf), cmd, filename);
 956         else {
 957                 if (cmd)
 958                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
 959                 if (def_cmd)
 960                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
 961                 else
 962                         return;
 963         }
 964
 965         execute_command_line(buf, TRUE);
 966 }
 967
 968 #if USE_GPGME
 969 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
 970                              gpointer data)
 971 {
 972         MimeInfo *partinfo;
 973         gchar *part_name;
 974
 975         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 976         g_return_if_fail(partinfo != NULL);
 977
 978         part_name = get_part_name(partinfo);
 979         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
 980 }
 981
 982 static void mimeview_update_names(MimeView *mimeview)
 983 {
 984         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 985
 986         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
 987 }
 988
 989 static void mimeview_update_signature_info(MimeView *mimeview)
 990 {
 991         MimeInfo *partinfo;
 992
 993         if (!mimeview) return;
 994         if (!mimeview->opened) return;
 995
 996         partinfo = gtk_ctree_node_get_row_data
 997                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 998         if (!partinfo) return;
 999
1000         if (g_strcasecmp(partinfo->content_type,
1001                          "application/pgp-signature") == 0) {
1002                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1003                 textview_show_signature_part(mimeview->textview, partinfo);
1004         }
1005 }
1006
1007 static void mimeview_check_signature(MimeView *mimeview)
1008 {
1009         MimeInfo *mimeinfo;
1010         gchar buf[BUFFSIZE];
1011         FILE *fp;
1012
1013         g_return_if_fail (mimeview_is_signed(mimeview));
1014
1015         mimeinfo = gtk_ctree_node_get_row_data
1016                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1017         g_return_if_fail(mimeinfo != NULL);
1018         g_return_if_fail(mimeview->file != NULL);
1019
1020         while (mimeinfo->parent)
1021                 mimeinfo = mimeinfo->parent;
1022
1023         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1024                 FILE_OP_ERROR(mimeview->file, "fopen");
1025                 return;
1026         }
1027
1028         /* skip headers */
1029         if (mimeinfo->mime_type == MIME_MULTIPART) {
1030                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
1031                 FILE_OP_ERROR(mimeview->file, "fseek");
1032                 while (fgets(buf, sizeof(buf), fp) != NULL)
1033                         if (buf[0] == '\r' || buf[0] == '\n') break;
1034         }
1035
1036         procmime_scan_multipart_message(mimeinfo, fp);
1037         rfc2015_check_signature(mimeinfo, fp);
1038         fclose(fp);
1039
1040         mimeview_update_names(mimeview);
1041         mimeview_update_signature_info(mimeview);
1042 }
1043 #endif /* USE_GPGME */