src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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
  40 #ifndef HAVE_APACHE_FNMATCH
  41 /* kludge: apache's fnmatch clashes with <regex.h>, don't include
  42  * fnmatch.h */
  43 #include <fnmatch.h>
  44 #endif
  45
  46 #include "intl.h"
  47 #include "main.h"
  48 #include "mimeview.h"
  49 #include "textview.h"
  50 #include "procmime.h"
  51 #include "summaryview.h"
  52 #include "menu.h"
  53 #include "filesel.h"
  54 #include "alertpanel.h"
  55 #include "inputdialog.h"
  56 #include "utils.h"
  57 #include "gtkutils.h"
  58 #include "prefs_common.h"
  59 #include "rfc2015.h"
  60 #include "stock_pixmap.h"
  61
  62 typedef enum
  63 {
  64         COL_MIMETYPE = 0,
  65         COL_SIZE     = 1,
  66         COL_NAME     = 2
  67 } MimeViewColumnPos;
  68
  69 #define N_MIMEVIEW_COLS 3
  70
  71 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  72                                                  MimeInfo       *mimeinfo,
  73                                                  GtkCTreeNode   *parent);
  74 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  75                                                  MimeInfo       *partinfo,
  76                                                  GtkCTreeNode   *parent);
  77 static void mimeview_show_message_part          (MimeView       *mimeview,
  78                                                  MimeInfo       *partinfo);
  79 static void mimeview_change_view_type           (MimeView       *mimeview,
  80                                                  MimeViewType    type);
  81 static void mimeview_clear                      (MimeView       *mimeview);
  82
  83 static void mimeview_selected           (GtkCTree       *ctree,
  84                                          GtkCTreeNode   *node,
  85                                          gint            column,
  86                                          MimeView       *mimeview);
  87 static void mimeview_start_drag         (GtkWidget      *widget,
  88                                          gint            button,
  89                                          GdkEvent       *event,
  90                                          MimeView       *mimeview);
  91 static gint mimeview_button_pressed     (GtkWidget      *widget,
  92                                          GdkEventButton *event,
  93                                          MimeView       *mimeview);
  94 static gint mimeview_key_pressed        (GtkWidget      *widget,
  95                                          GdkEventKey    *event,
  96                                          MimeView       *mimeview);
  97
  98 static void mimeview_drag_data_get      (GtkWidget        *widget,
  99                                          GdkDragContext   *drag_context,
 100                                          GtkSelectionData *selection_data,
 101                                          guint             info,
 102                                          guint             time,
 103                                          MimeView         *mimeview);
 104
 105 static void mimeview_display_as_text    (MimeView       *mimeview);
 106 static void mimeview_save_as            (MimeView       *mimeview);
 107 static void mimeview_save_all           (MimeView       *mimeview);
 108 static void mimeview_launch             (MimeView       *mimeview);
 109 static void mimeview_open_with          (MimeView       *mimeview);
 110 static void mimeview_view_file          (const gchar    *filename,
 111                                          MimeInfo       *partinfo,
 112                                          const gchar    *cmdline);
 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_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 120         {N_("/Save _all..."),     NULL, mimeview_save_all,        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 GSList *mimeviewer_factories;
 133 GSList *mimeviews;
 134
 135 MimeView *mimeview_create(MainWindow *mainwin)
 136 {
 137         MimeView *mimeview;
 138
 139         GtkWidget *notebook;
 140         GtkWidget *vbox;
 141         GtkWidget *paned;
 142         GtkWidget *scrolledwin;
 143         GtkWidget *ctree;
 144         GtkWidget *mime_vbox;
 145         GtkWidget *popupmenu;
 146         GtkWidget *icon;
 147         GtkItemFactory *popupfactory;
 148         gchar *titles[N_MIMEVIEW_COLS];
 149         gint n_entries;
 150         gint i;
 151
 152         debug_print("Creating MIME view...\n");
 153         mimeview = g_new0(MimeView, 1);
 154
 155         titles[COL_MIMETYPE] = _("MIME Type");
 156         titles[COL_SIZE]     = _("Size");
 157         titles[COL_NAME]     = _("Name");
 158
 159         notebook = gtk_notebook_new();
 160         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 161
 162         vbox = gtk_vbox_new(FALSE, 0);
 163         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 164         icon = stock_pixmap_widget(mainwin->window, STOCK_PIXMAP_MESSAGEVIEW_TEXT);
 165         gtk_widget_show(icon);
 166         gtk_notebook_set_tab_label(GTK_NOTEBOOK(notebook), vbox, icon);
 167
 168         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 169         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 170                                        GTK_POLICY_AUTOMATIC,
 171                                        GTK_POLICY_ALWAYS);
 172         gtk_widget_set_usize(scrolledwin, -1, 80);
 173
 174         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 175         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 176         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 177         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 178                                            GTK_JUSTIFY_RIGHT);
 179         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 180         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 181         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 182                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 183                                        GTK_CAN_FOCUS);
 184         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 185
 186         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 187                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 188         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 189                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 190         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 191                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 192         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 193                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 194         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 195                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 196
 197         mime_vbox = gtk_vbox_new(FALSE, 0);
 198
 199         paned = gtk_vpaned_new();
 200         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 201         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 202         gtk_container_add(GTK_CONTAINER(notebook), paned);
 203         icon = stock_pixmap_widget(mainwin->window, STOCK_PIXMAP_CLIP);
 204         gtk_widget_show(icon);
 205         gtk_notebook_set_tab_label(GTK_NOTEBOOK(notebook), paned, icon);
 206         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(notebook), GTK_POS_RIGHT);
 207
 208         gtk_widget_show_all(notebook);
 209
 210         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 211
 212         n_entries = sizeof(mimeview_popup_entries) /
 213                 sizeof(mimeview_popup_entries[0]);
 214         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 215                                       "<MimeView>", &popupfactory, mimeview);
 216
 217         mimeview->notebook     = notebook;
 218         mimeview->vbox         = vbox;
 219         mimeview->paned        = paned;
 220         mimeview->scrolledwin  = scrolledwin;
 221         mimeview->ctree        = ctree;
 222         mimeview->mime_vbox    = mime_vbox;
 223         mimeview->popupmenu    = popupmenu;
 224         mimeview->popupfactory = popupfactory;
 225         mimeview->type         = -1;
 226
 227         mimeviews = g_slist_prepend(mimeviews, mimeview);
 228
 229         return mimeview;
 230 }
 231
 232 void mimeview_init(MimeView *mimeview)
 233 {
 234         textview_init(mimeview->textview);
 235 }
 236
 237 /*
 238  * Check whether the message is OpenPGP signed
 239  */
 240 #if USE_GPGME
 241 static gboolean mimeview_is_signed(MimeView *mimeview)
 242 {
 243         MimeInfo *partinfo = NULL;
 244
 245         debug_print("mimeview_is signed of %p\n", mimeview);
 246
 247         if (!mimeview) return FALSE;
 248         if (!mimeview->opened) return FALSE;
 249
 250         debug_print("mimeview_is_signed: open\n" );
 251
 252         if (!mimeview->file) return FALSE;
 253
 254         debug_print("mimeview_is_signed: file\n" );
 255
 256         partinfo = gtk_ctree_node_get_row_data
 257                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 258         g_return_val_if_fail(partinfo != NULL, FALSE);
 259
 260         /* walk the tree and see whether there is a signature somewhere */
 261         do {
 262                 if (rfc2015_has_signature(partinfo))
 263                         return TRUE;
 264         } while ((partinfo = partinfo->parent) != NULL);
 265
 266         debug_print("mimeview_is_signed: FALSE\n" );
 267
 268         return FALSE;
 269 }
 270
 271 static void set_unchecked_signature(MimeInfo *mimeinfo)
 272 {
 273         MimeInfo *sig_partinfo;
 274
 275         sig_partinfo = rfc2015_find_signature(mimeinfo);
 276         if (sig_partinfo == NULL) return;
 277
 278         g_free(sig_partinfo->sigstatus);
 279         sig_partinfo->sigstatus =
 280                 g_strdup(_("Right-click here to verify the signature"));
 281
 282         g_free(sig_partinfo->sigstatus_full);
 283         sig_partinfo->sigstatus_full = NULL;
 284 }
 285 #endif /* USE_GPGME */
 286
 287 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 288                            const gchar *file)
 289 {
 290         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 291         GtkCTreeNode *node;
 292         FILE *fp;
 293
 294         mimeview_clear(mimeview);
 295         textview_clear(mimeview->messageview->textview);
 296
 297         g_return_if_fail(file != NULL);
 298         g_return_if_fail(mimeinfo != NULL);
 299
 300         mimeview->mimeinfo = mimeinfo;
 301
 302         mimeview->file = g_strdup(file);
 303
 304 #if USE_GPGME
 305         if (prefs_common.auto_check_signatures && gpg_started) {
 306                 if ((fp = fopen(file, "rb")) == NULL) {
 307                         FILE_OP_ERROR(file, "fopen");
 308                         return;
 309                 }
 310                 rfc2015_check_signature(mimeinfo, fp);
 311                 fclose(fp);
 312         } else
 313                 set_unchecked_signature(mimeinfo);
 314 #endif
 315
 316         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 317                                          mimeview);
 318
 319         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 320
 321         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 322                                            mimeview_selected, mimeview);
 323
 324         /* search first text part */
 325         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 326              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 327                 MimeInfo *partinfo;
 328
 329                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 330                 if (partinfo &&
 331                     (partinfo->mime_type == MIME_TEXT ||
 332                      partinfo->mime_type == MIME_TEXT_HTML))
 333                         break;
 334         }
 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         GSList *cur;
 350
 351         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 352                 MimeViewer *viewer = (MimeViewer *) cur->data;
 353                 viewer->destroy_viewer(viewer);
 354         }
 355         g_slist_free(mimeview->viewers);
 356
 357         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 358         g_free(mimeview->file);
 359         g_free(mimeview);
 360
 361         mimeviews = g_slist_remove(mimeviews, mimeview);
 362 }
 363
 364 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 365 {
 366         if (gtk_notebook_get_current_page
 367                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 368                 return NULL;
 369
 370         return gtk_ctree_node_get_row_data
 371                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 372 }
 373
 374 static void mimeview_set_multipart_tree(MimeView *mimeview,
 375                                         MimeInfo *mimeinfo,
 376                                         GtkCTreeNode *parent)
 377 {
 378         GtkCTreeNode *node;
 379
 380         g_return_if_fail(mimeinfo != NULL);
 381
 382         if (mimeinfo->children)
 383                 mimeinfo = mimeinfo->children;
 384
 385         while (mimeinfo != NULL) {
 386                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 387
 388                 if (mimeinfo->children)
 389                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 390                 else if (mimeinfo->sub &&
 391                          mimeinfo->sub->mime_type != MIME_TEXT &&
 392                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 393                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 394                                                     node);
 395                 mimeinfo = mimeinfo->next;
 396         }
 397 }
 398
 399 static gchar *get_part_name(MimeInfo *partinfo)
 400 {
 401 #if USE_GPGME
 402         if (partinfo->sigstatus)
 403                 return partinfo->sigstatus;
 404         else
 405 #endif
 406         if (partinfo->name)
 407                 return partinfo->name;
 408         else if (partinfo->filename)
 409                 return partinfo->filename;
 410         else if (partinfo->description)
 411                 return partinfo->description;
 412         else
 413                 return "";
 414 }
 415
 416 static gchar *get_part_description(MimeInfo *partinfo)
 417 {
 418         if (partinfo->description)
 419                 return partinfo->description;
 420         else if (partinfo->name)
 421                 return partinfo->name;
 422         else if (partinfo->filename)
 423                 return partinfo->filename;
 424         else
 425                 return "";
 426 }
 427
 428 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 429                                           MimeInfo *partinfo,
 430                                           GtkCTreeNode *parent)
 431 {
 432         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 433         GtkCTreeNode *node;
 434         gchar *str[N_MIMEVIEW_COLS];
 435
 436         str[COL_MIMETYPE] =
 437                 partinfo->content_type ? partinfo->content_type : "";
 438         str[COL_SIZE] = to_human_readable(partinfo->size);
 439         if (prefs_common.attach_desc)
 440                 str[COL_NAME] = get_part_description(partinfo);
 441         else
 442                 str[COL_NAME] = get_part_name(partinfo);
 443
 444         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 445                                      NULL, NULL, NULL, NULL,
 446                                      FALSE, TRUE);
 447         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 448
 449         return node;
 450 }
 451
 452 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 453 {
 454         FILE *fp;
 455         const gchar *fname;
 456 #if USE_GPGME
 457         MimeInfo *pi;
 458 #endif
 459
 460         if (!partinfo) return;
 461
 462 #if USE_GPGME
 463         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 464                 ;
 465         fname = pi ? pi->plaintextfile : mimeview->file;
 466 #else
 467         fname = mimeview->file;
 468 #endif /* USE_GPGME */
 469         if (!fname) return;
 470
 471         if ((fp = fopen(fname, "rb")) == NULL) {
 472                 FILE_OP_ERROR(fname, "fopen");
 473                 return;
 474         }
 475
 476         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 477                 FILE_OP_ERROR(mimeview->file, "fseek");
 478                 fclose(fp);
 479                 return;
 480         }
 481
 482         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 483         textview_show_part(mimeview->textview, partinfo, fp);
 484
 485         fclose(fp);
 486 }
 487
 488 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 489 {
 490         GSList *cur;
 491         MimeViewerFactory *factory = NULL;
 492         MimeViewer *viewer = NULL;
 493
 494 /*
 495  * FNM_CASEFOLD is a GNU extension
 496  * if its not defined copy the string to the stack and
 497  * convert the copy to lower case
 498  */
 499 #ifndef FNM_CASEFOLD
 500 #define FNM_CASEFOLD 0
 501         Xstrdup_a(content_type, content_type, return NULL);
 502         g_strdown((gchar *)content_type);
 503 #endif
 504
 505         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 506                 MimeViewerFactory *curfactory = cur->data;
 507                 gint i = 0;
 508
 509                 while (curfactory->content_types[i] != NULL) {
 510                         debug_print("%s\n", curfactory->content_types[i]);
 511                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 512                                 factory = curfactory;
 513                                 break;
 514                         }
 515                         i++;
 516                 }
 517                 if (factory != NULL)
 518                         break;
 519         }
 520         if (factory == NULL)
 521                 return NULL;
 522
 523         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 524                 MimeViewer *curviewer = cur->data;
 525
 526                 if (curviewer->factory == factory)
 527                         return curviewer;
 528         }
 529         viewer = factory->create_viewer();
 530         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 531
 532         return viewer;
 533 }
 534
 535 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 536 {
 537         gchar *content_type = NULL;
 538         MimeViewer *viewer = NULL;
 539
 540         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 541             (partinfo->name != NULL)) {
 542                 content_type = procmime_get_mime_type(partinfo->name);
 543         } else {
 544                 content_type = g_strdup(partinfo->content_type);
 545         }
 546
 547         if (content_type != NULL) {
 548                 viewer = get_viewer_for_content_type(mimeview, content_type);
 549                 g_free(content_type);
 550         }
 551
 552         return viewer;
 553 }
 554
 555 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 556 {
 557         MimeViewer *viewer;
 558
 559         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 560         if (viewer == NULL) {
 561                 if (mimeview->mimeviewer != NULL)
 562                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 563                 mimeview->mimeviewer = NULL;
 564                 return FALSE;
 565         }
 566
 567         if (mimeview->mimeviewer != viewer) {
 568                 if (mimeview->mimeviewer != NULL)
 569                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 570                 mimeview->mimeviewer = viewer;
 571                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 572         }
 573         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 574
 575         return TRUE;
 576 }
 577
 578 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 579 {
 580         TextView  *textview  = mimeview->textview;
 581         GList *children;
 582
 583         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 584             (mimeview->type == type)) return;
 585
 586         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 587         if (children) {
 588                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 589                                        GTK_WIDGET(children->data));
 590                 g_list_free(children);
 591         }
 592
 593         switch (type) {
 594         case MIMEVIEW_TEXT:
 595                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 596                                   GTK_WIDGET_PTR(textview));
 597                 break;
 598         case MIMEVIEW_VIEWER:
 599                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 600                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
 601                 break;
 602         default:
 603                 return;
 604         }
 605
 606         mimeview->type = type;
 607 }
 608
 609 static void mimeview_clear(MimeView *mimeview)
 610 {
 611         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 612
 613         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 614         mimeview->mimeinfo = NULL;
 615
 616         gtk_clist_clear(clist);
 617         textview_clear(mimeview->textview);
 618         if (mimeview->mimeviewer != NULL)
 619                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 620
 621         mimeview->opened = NULL;
 622
 623         g_free(mimeview->file);
 624         mimeview->file = NULL;
 625
 626         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 627 }
 628
 629 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 630                               MimeView *mimeview)
 631 {
 632         MimeInfo *partinfo;
 633
 634         if (mimeview->opened == node) return;
 635         mimeview->opened = node;
 636         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 637
 638         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 639         if (!partinfo) return;
 640
 641         /* ungrab the mouse event */
 642         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 643                 gtk_grab_remove(GTK_WIDGET(ctree));
 644                 if (gdk_pointer_is_grabbed())
 645                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 646         }
 647
 648         mimeview->textview->default_text = FALSE;
 649
 650         if (!mimeview_show_part(mimeview, partinfo)) {
 651                 switch (partinfo->mime_type) {
 652                 case MIME_TEXT:
 653                 case MIME_TEXT_HTML:
 654                 case MIME_TEXT_ENRICHED:
 655                 case MIME_MESSAGE_RFC822:
 656                 case MIME_MULTIPART:
 657                         mimeview_show_message_part(mimeview, partinfo);
 658
 659                         break;
 660                 default:
 661                         mimeview->textview->default_text = TRUE;
 662                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 663 #if USE_GPGME
 664                         if (g_strcasecmp(partinfo->content_type,
 665                                          "application/pgp-signature") == 0)
 666                                 textview_show_signature_part(mimeview->textview,
 667                                                              partinfo);
 668                         else
 669 #endif
 670                                 textview_show_mime_part(mimeview->textview, partinfo);
 671                         break;
 672                 }
 673         }
 674 }
 675
 676 static void mimeview_start_drag(GtkWidget *widget, gint button,
 677                                 GdkEvent *event, MimeView *mimeview)
 678 {
 679         GtkTargetList *list;
 680         GdkDragContext *context;
 681         MimeInfo *partinfo;
 682
 683         g_return_if_fail(mimeview != NULL);
 684
 685         partinfo = mimeview_get_selected_part(mimeview);
 686         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 687
 688         list = gtk_target_list_new(mimeview_mime_types, 1);
 689         context = gtk_drag_begin(widget, list,
 690                                  GDK_ACTION_COPY, button, event);
 691         gtk_drag_set_icon_default(context);
 692 }
 693
 694 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 695                                     MimeView *mimeview)
 696 {
 697         GtkCList *clist = GTK_CLIST(widget);
 698         MimeInfo *partinfo;
 699         gint row, column;
 700
 701         if (!event) return FALSE;
 702
 703         if (event->button == 2 || event->button == 3) {
 704                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 705                                                   &row, &column))
 706                         return FALSE;
 707                 gtk_clist_unselect_all(clist);
 708                 gtk_clist_select_row(clist, row, column);
 709                 gtkut_clist_set_focus_row(clist, row);
 710         }
 711
 712         if (event->button == 2 ||
 713             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 714                 /* call external program for image, audio or html */
 715                 mimeview_launch(mimeview);
 716         } else if (event->button == 3) {
 717                 partinfo = mimeview_get_selected_part(mimeview);
 718                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 719                                  partinfo->mime_type == MIME_TEXT_HTML ||
 720                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 721                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 722                                  partinfo->mime_type == MIME_IMAGE ||
 723                                  partinfo->mime_type == MIME_MULTIPART))
 724                         menu_set_sensitive(mimeview->popupfactory,
 725                                            "/Display as text", FALSE);
 726                 else
 727                         menu_set_sensitive(mimeview->popupfactory,
 728                                            "/Display as text", TRUE);
 729                 if (partinfo &&
 730                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 731                         menu_set_sensitive(mimeview->popupfactory,
 732                                            "/Open", FALSE);
 733                 else
 734                         menu_set_sensitive(mimeview->popupfactory,
 735                                            "/Open", TRUE);
 736
 737 #if USE_GPGME
 738                 menu_set_sensitive(mimeview->popupfactory,
 739                                    "/Check signature",
 740                                    mimeview_is_signed(mimeview));
 741 #endif
 742
 743                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 744                                NULL, NULL, NULL, NULL,
 745                                event->button, event->time);
 746         }
 747
 748         return TRUE;
 749 }
 750
 751 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 752 {
 753         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 754 }
 755
 756 #define BREAK_ON_MODIFIER_KEY() \
 757         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 758
 759 #define KEY_PRESS_EVENT_STOP() \
 760         if (gtk_signal_n_emissions_by_name \
 761                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 762                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 763                                              "key_press_event"); \
 764         }
 765
 766 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 767                                  MimeView *mimeview)
 768 {
 769         SummaryView *summaryview;
 770         GtkCTree *ctree = GTK_CTREE(widget);
 771         GtkCTreeNode *node;
 772
 773         if (!event) return FALSE;
 774         if (!mimeview->opened) return FALSE;
 775
 776         switch (event->keyval) {
 777         case GDK_space:
 778                 if (textview_scroll_page(mimeview->textview, FALSE))
 779                         return TRUE;
 780
 781                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 782                 if (node) {
 783                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 784                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 785                         return TRUE;
 786                 }
 787                 break;
 788         case GDK_BackSpace:
 789                 textview_scroll_page(mimeview->textview, TRUE);
 790                 return TRUE;
 791         case GDK_Return:
 792                 textview_scroll_one_line(mimeview->textview,
 793                                          (event->state & GDK_MOD1_MASK) != 0);
 794                 return TRUE;
 795         case GDK_n:
 796         case GDK_N:
 797                 BREAK_ON_MODIFIER_KEY();
 798                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 799                 KEY_PRESS_EVENT_STOP();
 800
 801                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 802                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 803                 return TRUE;
 804         case GDK_p:
 805         case GDK_P:
 806                 BREAK_ON_MODIFIER_KEY();
 807                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 808                 KEY_PRESS_EVENT_STOP();
 809
 810                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 811                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 812                 return TRUE;
 813         case GDK_y:
 814                 BREAK_ON_MODIFIER_KEY();
 815                 KEY_PRESS_EVENT_STOP();
 816                 mimeview_save_as(mimeview);
 817                 return TRUE;
 818         case GDK_t:
 819                 BREAK_ON_MODIFIER_KEY();
 820                 KEY_PRESS_EVENT_STOP();
 821                 mimeview_display_as_text(mimeview);
 822                 return TRUE;
 823         case GDK_l:
 824                 BREAK_ON_MODIFIER_KEY();
 825                 KEY_PRESS_EVENT_STOP();
 826                 mimeview_launch(mimeview);
 827                 return TRUE;
 828         default:
 829                 break;
 830         }
 831
 832         if (!mimeview->messageview->mainwin) return FALSE;
 833         summaryview = mimeview->messageview->mainwin->summaryview;
 834         summary_pass_key_press_event(summaryview, event);
 835         return TRUE;
 836 }
 837
 838 static void mimeview_drag_data_get(GtkWidget        *widget,
 839                                    GdkDragContext   *drag_context,
 840                                    GtkSelectionData *selection_data,
 841                                    guint             info,
 842                                    guint             time,
 843                                    MimeView         *mimeview)
 844 {
 845         gchar *filename, *uriname;
 846         MimeInfo *partinfo;
 847
 848         if (!mimeview->opened) return;
 849         if (!mimeview->file) return;
 850
 851         partinfo = mimeview_get_selected_part(mimeview);
 852         if (!partinfo) return;
 853         if (!partinfo->filename && !partinfo->name) return;
 854
 855         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 856         filename = g_basename(filename);
 857         if (*filename == '\0') return;
 858
 859         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 860                                filename, NULL);
 861
 862         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 863                 alertpanel_error
 864                         (_("Can't save the part of multipart message."));
 865
 866         uriname = g_strconcat("file:/", filename, NULL);
 867         gtk_selection_data_set(selection_data, selection_data->target, 8,
 868                                uriname, strlen(uriname));
 869
 870         g_free(uriname);
 871         g_free(filename);
 872 }
 873
 874 static void mimeview_save_all(MimeView *mimeview)
 875 {
 876         gchar *dirname;
 877         gchar *defname = NULL;
 878         MimeInfo *partinfo;
 879         MimeInfo *attachment;
 880         gchar buf[1024];
 881
 882         if (!mimeview->opened) return;
 883         if (!mimeview->file) return;
 884
 885         partinfo = mimeview_get_selected_part(mimeview);
 886         g_return_if_fail(partinfo != NULL);
 887
 888         dirname = filesel_select_file(_("Save as"), defname);
 889         if (!dirname) return;
 890
 891         /* return to first children */
 892         if (!partinfo->parent->children) return;  /* multipart container? */
 893         attachment = partinfo->parent->children->next;
 894         /* for each attachment, extract it in the selected dir. */
 895         while (attachment != NULL) {
 896                 static guint subst_cnt = 1;
 897                 gchar *attachdir;
 898                 gchar *attachname = g_strdup(get_part_name(attachment));
 899                 AlertValue aval = G_ALERTDEFAULT;
 900                 gchar *res;
 901
 902                 if (!attachname || !strlen(attachname))
 903                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 904                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 905                 g_snprintf(buf, sizeof(buf), "%s%s",
 906                            dirname,
 907                            (attachname[0] == G_DIR_SEPARATOR)
 908                            ? &attachname[1]
 909                            : attachname);
 910                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 911                 attachdir = g_dirname(buf);
 912                 make_dir_hier(attachdir);
 913                 g_free(attachdir);
 914
 915                 if (is_file_exist(buf)) {
 916                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 917                                               attachname);
 918                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 919                                           _("Cancel"), NULL);
 920                         g_free(res);
 921                 }
 922                 g_free(attachname);
 923
 924                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 925                         alertpanel_error(_("Can't save the part of multipart message."));
 926                 attachment = attachment->next;
 927         }
 928 }
 929
 930 static void mimeview_display_as_text(MimeView *mimeview)
 931 {
 932         MimeInfo *partinfo;
 933
 934         if (!mimeview->opened) return;
 935
 936         partinfo = mimeview_get_selected_part(mimeview);
 937         g_return_if_fail(partinfo != NULL);
 938         mimeview_show_message_part(mimeview, partinfo);
 939 }
 940
 941 static void mimeview_save_as(MimeView *mimeview)
 942 {
 943         gchar *filename;
 944         gchar *defname = NULL;
 945         MimeInfo *partinfo;
 946         gchar *res;
 947
 948         if (!mimeview->opened) return;
 949         if (!mimeview->file) return;
 950
 951         partinfo = mimeview_get_selected_part(mimeview);
 952         g_return_if_fail(partinfo != NULL);
 953
 954         if (partinfo->filename)
 955                 defname = partinfo->filename;
 956         else if (partinfo->name) {
 957                 Xstrdup_a(defname, partinfo->name, return);
 958                 subst_for_filename(defname);
 959         }
 960
 961         filename = filesel_select_file(_("Save as"), defname);
 962         if (!filename) return;
 963         if (is_file_exist(filename)) {
 964                 AlertValue aval;
 965                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 966                                       filename);
 967                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 968                                   _("Cancel"), NULL);
 969                 g_free(res);
 970                 if (G_ALERTDEFAULT != aval) return;
 971         }
 972
 973         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 974                 alertpanel_error
 975                         (_("Can't save the part of multipart message."));
 976 }
 977
 978 static void mimeview_launch(MimeView *mimeview)
 979 {
 980         MimeInfo *partinfo;
 981         gchar *filename;
 982
 983         if (!mimeview->opened) return;
 984         if (!mimeview->file) return;
 985
 986         partinfo = mimeview_get_selected_part(mimeview);
 987         g_return_if_fail(partinfo != NULL);
 988
 989         filename = procmime_get_tmp_file_name(partinfo);
 990
 991         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 992                 alertpanel_error
 993                         (_("Can't save the part of multipart message."));
 994         else
 995                 mimeview_view_file(filename, partinfo, NULL);
 996
 997         g_free(filename);
 998 }
 999
1000 static void mimeview_open_with(MimeView *mimeview)
1001 {
1002         MimeInfo *partinfo;
1003         gchar *filename;
1004         gchar *cmd;
1005
1006         if (!mimeview->opened) return;
1007         if (!mimeview->file) return;
1008
1009         partinfo = mimeview_get_selected_part(mimeview);
1010         g_return_if_fail(partinfo != NULL);
1011
1012         filename = procmime_get_tmp_file_name(partinfo);
1013
1014         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
1015                 alertpanel_error
1016                         (_("Can't save the part of multipart message."));
1017                 g_free(filename);
1018                 return;
1019         }
1020
1021         if (!prefs_common.mime_open_cmd_history)
1022                 prefs_common.mime_open_cmd_history =
1023                         add_history(NULL, prefs_common.mime_open_cmd);
1024
1025         cmd = input_dialog_combo
1026                 (_("Open with"),
1027                  _("Enter the command line to open file:\n"
1028                    "(`%s' will be replaced with file name)"),
1029                  prefs_common.mime_open_cmd,
1030                  prefs_common.mime_open_cmd_history,
1031                  TRUE);
1032         if (cmd) {
1033                 mimeview_view_file(filename, partinfo, cmd);
1034                 g_free(prefs_common.mime_open_cmd);
1035                 prefs_common.mime_open_cmd = cmd;
1036                 prefs_common.mime_open_cmd_history =
1037                         add_history(prefs_common.mime_open_cmd_history, cmd);
1038         }
1039
1040         g_free(filename);
1041 }
1042
1043 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1044                                const gchar *cmdline)
1045 {
1046         static gchar *default_image_cmdline = "display '%s'";
1047         static gchar *default_audio_cmdline = "play '%s'";
1048         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1049         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1050         gchar buf[1024];
1051         gchar m_buf[1024];
1052         const gchar *cmd;
1053         const gchar *def_cmd;
1054         const gchar *p;
1055
1056         if (cmdline) {
1057                 cmd = cmdline;
1058                 def_cmd = NULL;
1059         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1060                 return;
1061         } else if (MIME_IMAGE == partinfo->mime_type) {
1062                 cmd = prefs_common.mime_image_viewer;
1063                 def_cmd = default_image_cmdline;
1064         } else if (MIME_AUDIO == partinfo->mime_type) {
1065                 cmd = prefs_common.mime_audio_player;
1066                 def_cmd = default_audio_cmdline;
1067         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1068                 cmd = prefs_common.uri_cmd;
1069                 def_cmd = default_html_cmdline;
1070         } else {
1071                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1072                            partinfo->content_type, "%s");
1073                 cmd = m_buf;
1074                 def_cmd = NULL;
1075         }
1076
1077         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1078             !strchr(p + 2, '%'))
1079                 g_snprintf(buf, sizeof(buf), cmd, filename);
1080         else {
1081                 if (cmd)
1082                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1083                 if (def_cmd)
1084                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1085                 else
1086                         return;
1087         }
1088
1089         execute_command_line(buf, TRUE);
1090 }
1091
1092 #if USE_GPGME
1093 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1094                              gpointer data)
1095 {
1096         MimeInfo *partinfo;
1097         gchar *part_name;
1098
1099         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1100         g_return_if_fail(partinfo != NULL);
1101
1102         part_name = get_part_name(partinfo);
1103         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1104 }
1105
1106 static void mimeview_update_names(MimeView *mimeview)
1107 {
1108         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1109
1110         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1111 }
1112
1113 static void mimeview_update_signature_info(MimeView *mimeview)
1114 {
1115         MimeInfo *partinfo;
1116
1117         if (!mimeview) return;
1118         if (!mimeview->opened) return;
1119
1120         partinfo = mimeview_get_selected_part(mimeview);
1121         if (!partinfo) return;
1122
1123         if (g_strcasecmp(partinfo->content_type,
1124                          "application/pgp-signature") == 0) {
1125                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1126                 textview_show_signature_part(mimeview->textview, partinfo);
1127         }
1128 }
1129
1130 void mimeview_check_signature(MimeView *mimeview)
1131 {
1132         MimeInfo *mimeinfo;
1133         FILE *fp;
1134
1135         g_return_if_fail (mimeview_is_signed(mimeview));
1136         g_return_if_fail (gpg_started);
1137
1138         mimeinfo = gtk_ctree_node_get_row_data
1139                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1140         g_return_if_fail(mimeinfo != NULL);
1141         g_return_if_fail(mimeview->file != NULL);
1142
1143         while (mimeinfo->parent)
1144                 mimeinfo = mimeinfo->parent;
1145
1146         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1147                 FILE_OP_ERROR(mimeview->file, "fopen");
1148                 return;
1149         }
1150
1151         rfc2015_check_signature(mimeinfo, fp);
1152         fclose(fp);
1153
1154         mimeview_update_names(mimeview);
1155         mimeview_update_signature_info(mimeview);
1156
1157         textview_show_message(mimeview->messageview->textview, mimeinfo,
1158                               mimeview->file);
1159 }
1160 #endif /* USE_GPGME */
1161
1162 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1163 {
1164         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1165 }
1166
1167 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1168 {
1169         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1170 }
1171
1172 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1173 {
1174         GSList *mimeview_list, *viewer_list;
1175
1176         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1177                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1178
1179                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1180                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1181                         mimeview->mimeviewer = NULL;
1182                 }
1183
1184                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1185                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1186
1187                         mimeviewer->destroy_viewer(mimeviewer);
1188                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1189                 }
1190         }
1191
1192         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1193 }