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_notebook;
 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_notebook = gtk_notebook_new();
 198         gtk_widget_show(mime_notebook);
 199         GTK_WIDGET_UNSET_FLAGS(mime_notebook, GTK_CAN_FOCUS);
 200         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
 201         gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
 202
 203         paned = gtk_vpaned_new();
 204         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 205         gtk_paned_add2(GTK_PANED(paned), mime_notebook);
 206         gtk_container_add(GTK_CONTAINER(notebook), paned);
 207         icon = stock_pixmap_widget(mainwin->window, STOCK_PIXMAP_CLIP);
 208         gtk_widget_show(icon);
 209         gtk_notebook_set_tab_label(GTK_NOTEBOOK(notebook), paned, icon);
 210         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(notebook), GTK_POS_RIGHT);
 211
 212         gtk_widget_show_all(notebook);
 213
 214         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 215
 216         n_entries = sizeof(mimeview_popup_entries) /
 217                 sizeof(mimeview_popup_entries[0]);
 218         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 219                                       "<MimeView>", &popupfactory, mimeview);
 220
 221         mimeview->notebook      = notebook;
 222         mimeview->vbox          = vbox;
 223         mimeview->paned         = paned;
 224         mimeview->scrolledwin   = scrolledwin;
 225         mimeview->ctree         = ctree;
 226         mimeview->mime_notebook = mime_notebook;
 227         mimeview->popupmenu     = popupmenu;
 228         mimeview->popupfactory  = popupfactory;
 229         mimeview->type          = -1;
 230
 231         mimeviews = g_slist_prepend(mimeviews, mimeview);
 232
 233         return mimeview;
 234 }
 235
 236 void mimeview_init(MimeView *mimeview)
 237 {
 238         textview_init(mimeview->textview);
 239
 240         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 241                 GTK_WIDGET_PTR(mimeview->textview));
 242 }
 243
 244 /*
 245  * Check whether the message is OpenPGP signed
 246  */
 247 #if USE_GPGME
 248 static gboolean mimeview_is_signed(MimeView *mimeview)
 249 {
 250         MimeInfo *partinfo = NULL;
 251
 252         debug_print("mimeview_is signed of %p\n", mimeview);
 253
 254         if (!mimeview) return FALSE;
 255         if (!mimeview->opened) return FALSE;
 256
 257         debug_print("mimeview_is_signed: open\n" );
 258
 259         if (!mimeview->file) return FALSE;
 260
 261         debug_print("mimeview_is_signed: file\n" );
 262
 263         partinfo = gtk_ctree_node_get_row_data
 264                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 265         g_return_val_if_fail(partinfo != NULL, FALSE);
 266
 267         /* walk the tree and see whether there is a signature somewhere */
 268         do {
 269                 if (rfc2015_has_signature(partinfo))
 270                         return TRUE;
 271         } while ((partinfo = partinfo->parent) != NULL);
 272
 273         debug_print("mimeview_is_signed: FALSE\n" );
 274
 275         return FALSE;
 276 }
 277
 278 static void set_unchecked_signature(MimeInfo *mimeinfo)
 279 {
 280         MimeInfo *sig_partinfo;
 281
 282         sig_partinfo = rfc2015_find_signature(mimeinfo);
 283         if (sig_partinfo == NULL) return;
 284
 285         g_free(sig_partinfo->sigstatus);
 286         sig_partinfo->sigstatus =
 287                 g_strdup(_("Right-click here to verify the signature"));
 288
 289         g_free(sig_partinfo->sigstatus_full);
 290         sig_partinfo->sigstatus_full = NULL;
 291 }
 292 #endif /* USE_GPGME */
 293
 294 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 295                            const gchar *file)
 296 {
 297         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 298         GtkCTreeNode *node;
 299         FILE *fp;
 300
 301         mimeview_clear(mimeview);
 302         textview_clear(mimeview->messageview->textview);
 303
 304         g_return_if_fail(file != NULL);
 305         g_return_if_fail(mimeinfo != NULL);
 306
 307         mimeview->mimeinfo = mimeinfo;
 308
 309         mimeview->file = g_strdup(file);
 310
 311 #if USE_GPGME
 312         if (prefs_common.auto_check_signatures && gpg_started) {
 313                 if ((fp = fopen(file, "rb")) == NULL) {
 314                         FILE_OP_ERROR(file, "fopen");
 315                         return;
 316                 }
 317                 rfc2015_check_signature(mimeinfo, fp);
 318                 fclose(fp);
 319         } else
 320                 set_unchecked_signature(mimeinfo);
 321 #endif
 322
 323         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 324                                          mimeview);
 325
 326         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 327
 328         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 329                                            mimeview_selected, mimeview);
 330
 331         /* search first text part */
 332         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 333              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 334                 MimeInfo *partinfo;
 335
 336                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 337                 if (partinfo &&
 338                     (partinfo->mime_type == MIME_TEXT ||
 339                      partinfo->mime_type == MIME_TEXT_HTML))
 340                         break;
 341         }
 342         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 343
 344         if (!node)
 345                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 346
 347         if (node) {
 348                 gtk_ctree_select(ctree, node);
 349                 gtkut_ctree_set_focus_row(ctree, node);
 350                 gtk_widget_grab_focus(mimeview->ctree);
 351         }
 352 }
 353
 354 void mimeview_destroy(MimeView *mimeview)
 355 {
 356         GSList *cur;
 357
 358         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 359                 MimeViewer *viewer = (MimeViewer *) cur->data;
 360                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 361                         GTK_WIDGET(viewer->get_widget(viewer)));
 362                 viewer->destroy_viewer(viewer);
 363         }
 364         g_slist_free(mimeview->viewers);
 365
 366         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 367         g_free(mimeview->file);
 368         g_free(mimeview);
 369
 370         mimeviews = g_slist_remove(mimeviews, mimeview);
 371 }
 372
 373 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 374 {
 375         if (gtk_notebook_get_current_page
 376                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 377                 return NULL;
 378
 379         return gtk_ctree_node_get_row_data
 380                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 381 }
 382
 383 static void mimeview_set_multipart_tree(MimeView *mimeview,
 384                                         MimeInfo *mimeinfo,
 385                                         GtkCTreeNode *parent)
 386 {
 387         GtkCTreeNode *node;
 388
 389         g_return_if_fail(mimeinfo != NULL);
 390
 391         if (mimeinfo->children)
 392                 mimeinfo = mimeinfo->children;
 393
 394         while (mimeinfo != NULL) {
 395                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 396
 397                 if (mimeinfo->children)
 398                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 399                 else if (mimeinfo->sub &&
 400                          mimeinfo->sub->mime_type != MIME_TEXT &&
 401                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 402                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 403                                                     node);
 404                 mimeinfo = mimeinfo->next;
 405         }
 406 }
 407
 408 static gchar *get_part_name(MimeInfo *partinfo)
 409 {
 410 #if USE_GPGME
 411         if (partinfo->sigstatus)
 412                 return partinfo->sigstatus;
 413         else
 414 #endif
 415         if (partinfo->name)
 416                 return partinfo->name;
 417         else if (partinfo->filename)
 418                 return partinfo->filename;
 419         else if (partinfo->description)
 420                 return partinfo->description;
 421         else
 422                 return "";
 423 }
 424
 425 static gchar *get_part_description(MimeInfo *partinfo)
 426 {
 427         if (partinfo->description)
 428                 return partinfo->description;
 429         else if (partinfo->name)
 430                 return partinfo->name;
 431         else if (partinfo->filename)
 432                 return partinfo->filename;
 433         else
 434                 return "";
 435 }
 436
 437 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 438                                           MimeInfo *partinfo,
 439                                           GtkCTreeNode *parent)
 440 {
 441         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 442         GtkCTreeNode *node;
 443         gchar *str[N_MIMEVIEW_COLS];
 444
 445         str[COL_MIMETYPE] =
 446                 partinfo->content_type ? partinfo->content_type : "";
 447         str[COL_SIZE] = to_human_readable(partinfo->size);
 448         if (prefs_common.attach_desc)
 449                 str[COL_NAME] = get_part_description(partinfo);
 450         else
 451                 str[COL_NAME] = get_part_name(partinfo);
 452
 453         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 454                                      NULL, NULL, NULL, NULL,
 455                                      FALSE, TRUE);
 456         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 457
 458         return node;
 459 }
 460
 461 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 462 {
 463         FILE *fp;
 464         const gchar *fname;
 465 #if USE_GPGME
 466         MimeInfo *pi;
 467 #endif
 468
 469         if (!partinfo) return;
 470
 471 #if USE_GPGME
 472         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 473                 ;
 474         fname = pi ? pi->plaintextfile : mimeview->file;
 475 #else
 476         fname = mimeview->file;
 477 #endif /* USE_GPGME */
 478         if (!fname) return;
 479
 480         if ((fp = fopen(fname, "rb")) == NULL) {
 481                 FILE_OP_ERROR(fname, "fopen");
 482                 return;
 483         }
 484
 485         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 486                 FILE_OP_ERROR(mimeview->file, "fseek");
 487                 fclose(fp);
 488                 return;
 489         }
 490
 491         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 492         textview_show_part(mimeview->textview, partinfo, fp);
 493
 494         fclose(fp);
 495 }
 496
 497 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 498 {
 499         GSList *cur;
 500         MimeViewerFactory *factory = NULL;
 501         MimeViewer *viewer = NULL;
 502
 503 /*
 504  * FNM_CASEFOLD is a GNU extension
 505  * if its not defined copy the string to the stack and
 506  * convert the copy to lower case
 507  */
 508 #ifndef FNM_CASEFOLD
 509 #define FNM_CASEFOLD 0
 510         Xstrdup_a(content_type, content_type, return NULL);
 511         g_strdown((gchar *)content_type);
 512 #endif
 513
 514         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 515                 MimeViewerFactory *curfactory = cur->data;
 516                 gint i = 0;
 517
 518                 while (curfactory->content_types[i] != NULL) {
 519                         debug_print("%s\n", curfactory->content_types[i]);
 520                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 521                                 factory = curfactory;
 522                                 break;
 523                         }
 524                         i++;
 525                 }
 526                 if (factory != NULL)
 527                         break;
 528         }
 529         if (factory == NULL)
 530                 return NULL;
 531
 532         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 533                 MimeViewer *curviewer = cur->data;
 534
 535                 if (curviewer->factory == factory)
 536                         return curviewer;
 537         }
 538         viewer = factory->create_viewer();
 539         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 540                 GTK_WIDGET(viewer->get_widget(viewer)));
 541
 542         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 543
 544         return viewer;
 545 }
 546
 547 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 548 {
 549         gchar *content_type = NULL;
 550         MimeViewer *viewer = NULL;
 551
 552         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 553             (partinfo->name != NULL)) {
 554                 content_type = procmime_get_mime_type(partinfo->name);
 555         } else {
 556                 content_type = g_strdup(partinfo->content_type);
 557         }
 558
 559         if (content_type != NULL) {
 560                 viewer = get_viewer_for_content_type(mimeview, content_type);
 561                 g_free(content_type);
 562         }
 563
 564         return viewer;
 565 }
 566
 567 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 568 {
 569         MimeViewer *viewer;
 570
 571         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 572         if (viewer == NULL) {
 573                 if (mimeview->mimeviewer != NULL)
 574                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 575                 mimeview->mimeviewer = NULL;
 576                 return FALSE;
 577         }
 578
 579         if (mimeview->mimeviewer != viewer) {
 580                 if (mimeview->mimeviewer != NULL)
 581                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 582                 mimeview->mimeviewer = viewer;
 583                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 584         }
 585         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 586
 587         return TRUE;
 588 }
 589
 590 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 591 {
 592         TextView  *textview  = mimeview->textview;
 593
 594         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 595             (mimeview->type == type)) return;
 596
 597         switch (type) {
 598         case MIMEVIEW_TEXT:
 599                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 600                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 601                         GTK_WIDGET_PTR(textview)));
 602                 break;
 603         case MIMEVIEW_VIEWER:
 604                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 605                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 606                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 607                 break;
 608         default:
 609                 return;
 610         }
 611
 612         mimeview->type = type;
 613 }
 614
 615 static void mimeview_clear(MimeView *mimeview)
 616 {
 617         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 618
 619         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 620         mimeview->mimeinfo = NULL;
 621
 622         gtk_clist_clear(clist);
 623         textview_clear(mimeview->textview);
 624         if (mimeview->mimeviewer != NULL)
 625                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 626
 627         mimeview->opened = NULL;
 628
 629         g_free(mimeview->file);
 630         mimeview->file = NULL;
 631
 632         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 633 }
 634
 635 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 636                               MimeView *mimeview)
 637 {
 638         MimeInfo *partinfo;
 639
 640         if (mimeview->opened == node) return;
 641         mimeview->opened = node;
 642         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 643
 644         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 645         if (!partinfo) return;
 646
 647         /* ungrab the mouse event */
 648         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 649                 gtk_grab_remove(GTK_WIDGET(ctree));
 650                 if (gdk_pointer_is_grabbed())
 651                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 652         }
 653
 654         mimeview->textview->default_text = FALSE;
 655
 656         if (!mimeview_show_part(mimeview, partinfo)) {
 657                 switch (partinfo->mime_type) {
 658                 case MIME_TEXT:
 659                 case MIME_TEXT_HTML:
 660                 case MIME_TEXT_ENRICHED:
 661                 case MIME_MESSAGE_RFC822:
 662                 case MIME_MULTIPART:
 663                         mimeview_show_message_part(mimeview, partinfo);
 664
 665                         break;
 666                 default:
 667                         mimeview->textview->default_text = TRUE;
 668                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 669 #if USE_GPGME
 670                         if (g_strcasecmp(partinfo->content_type,
 671                                          "application/pgp-signature") == 0)
 672                                 textview_show_signature_part(mimeview->textview,
 673                                                              partinfo);
 674                         else
 675 #endif
 676                                 textview_show_mime_part(mimeview->textview, partinfo);
 677                         break;
 678                 }
 679         }
 680 }
 681
 682 static void mimeview_start_drag(GtkWidget *widget, gint button,
 683                                 GdkEvent *event, MimeView *mimeview)
 684 {
 685         GtkTargetList *list;
 686         GdkDragContext *context;
 687         MimeInfo *partinfo;
 688
 689         g_return_if_fail(mimeview != NULL);
 690
 691         partinfo = mimeview_get_selected_part(mimeview);
 692         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 693
 694         list = gtk_target_list_new(mimeview_mime_types, 1);
 695         context = gtk_drag_begin(widget, list,
 696                                  GDK_ACTION_COPY, button, event);
 697         gtk_drag_set_icon_default(context);
 698 }
 699
 700 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 701                                     MimeView *mimeview)
 702 {
 703         GtkCList *clist = GTK_CLIST(widget);
 704         MimeInfo *partinfo;
 705         gint row, column;
 706
 707         if (!event) return FALSE;
 708
 709         if (event->button == 2 || event->button == 3) {
 710                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 711                                                   &row, &column))
 712                         return FALSE;
 713                 gtk_clist_unselect_all(clist);
 714                 gtk_clist_select_row(clist, row, column);
 715                 gtkut_clist_set_focus_row(clist, row);
 716         }
 717
 718         if (event->button == 2 ||
 719             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 720                 /* call external program for image, audio or html */
 721                 mimeview_launch(mimeview);
 722         } else if (event->button == 3) {
 723                 partinfo = mimeview_get_selected_part(mimeview);
 724                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 725                                  partinfo->mime_type == MIME_TEXT_HTML ||
 726                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 727                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 728                                  partinfo->mime_type == MIME_IMAGE ||
 729                                  partinfo->mime_type == MIME_MULTIPART))
 730                         menu_set_sensitive(mimeview->popupfactory,
 731                                            "/Display as text", FALSE);
 732                 else
 733                         menu_set_sensitive(mimeview->popupfactory,
 734                                            "/Display as text", TRUE);
 735                 if (partinfo &&
 736                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 737                         menu_set_sensitive(mimeview->popupfactory,
 738                                            "/Open", FALSE);
 739                 else
 740                         menu_set_sensitive(mimeview->popupfactory,
 741                                            "/Open", TRUE);
 742
 743 #if USE_GPGME
 744                 menu_set_sensitive(mimeview->popupfactory,
 745                                    "/Check signature",
 746                                    mimeview_is_signed(mimeview));
 747 #endif
 748
 749                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 750                                NULL, NULL, NULL, NULL,
 751                                event->button, event->time);
 752         }
 753
 754         return TRUE;
 755 }
 756
 757 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 758 {
 759         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 760 }
 761
 762 #define BREAK_ON_MODIFIER_KEY() \
 763         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 764
 765 #define KEY_PRESS_EVENT_STOP() \
 766         if (gtk_signal_n_emissions_by_name \
 767                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 768                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 769                                              "key_press_event"); \
 770         }
 771
 772 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 773                                  MimeView *mimeview)
 774 {
 775         SummaryView *summaryview;
 776         GtkCTree *ctree = GTK_CTREE(widget);
 777         GtkCTreeNode *node;
 778
 779         if (!event) return FALSE;
 780         if (!mimeview->opened) return FALSE;
 781
 782         switch (event->keyval) {
 783         case GDK_space:
 784                 if (textview_scroll_page(mimeview->textview, FALSE))
 785                         return TRUE;
 786
 787                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 788                 if (node) {
 789                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 790                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 791                         return TRUE;
 792                 }
 793                 break;
 794         case GDK_BackSpace:
 795                 textview_scroll_page(mimeview->textview, TRUE);
 796                 return TRUE;
 797         case GDK_Return:
 798                 textview_scroll_one_line(mimeview->textview,
 799                                          (event->state & GDK_MOD1_MASK) != 0);
 800                 return TRUE;
 801         case GDK_n:
 802         case GDK_N:
 803                 BREAK_ON_MODIFIER_KEY();
 804                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 805                 KEY_PRESS_EVENT_STOP();
 806
 807                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 808                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 809                 return TRUE;
 810         case GDK_p:
 811         case GDK_P:
 812                 BREAK_ON_MODIFIER_KEY();
 813                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 814                 KEY_PRESS_EVENT_STOP();
 815
 816                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 817                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 818                 return TRUE;
 819         case GDK_y:
 820                 BREAK_ON_MODIFIER_KEY();
 821                 KEY_PRESS_EVENT_STOP();
 822                 mimeview_save_as(mimeview);
 823                 return TRUE;
 824         case GDK_t:
 825                 BREAK_ON_MODIFIER_KEY();
 826                 KEY_PRESS_EVENT_STOP();
 827                 mimeview_display_as_text(mimeview);
 828                 return TRUE;
 829         case GDK_l:
 830                 BREAK_ON_MODIFIER_KEY();
 831                 KEY_PRESS_EVENT_STOP();
 832                 mimeview_launch(mimeview);
 833                 return TRUE;
 834         default:
 835                 break;
 836         }
 837
 838         if (!mimeview->messageview->mainwin) return FALSE;
 839         summaryview = mimeview->messageview->mainwin->summaryview;
 840         summary_pass_key_press_event(summaryview, event);
 841         return TRUE;
 842 }
 843
 844 static void mimeview_drag_data_get(GtkWidget        *widget,
 845                                    GdkDragContext   *drag_context,
 846                                    GtkSelectionData *selection_data,
 847                                    guint             info,
 848                                    guint             time,
 849                                    MimeView         *mimeview)
 850 {
 851         gchar *filename, *uriname;
 852         MimeInfo *partinfo;
 853
 854         if (!mimeview->opened) return;
 855         if (!mimeview->file) return;
 856
 857         partinfo = mimeview_get_selected_part(mimeview);
 858         if (!partinfo) return;
 859         if (!partinfo->filename && !partinfo->name) return;
 860
 861         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 862         filename = g_basename(filename);
 863         if (*filename == '\0') return;
 864
 865         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 866                                filename, NULL);
 867
 868         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 869                 alertpanel_error
 870                         (_("Can't save the part of multipart message."));
 871
 872         uriname = g_strconcat("file:/", filename, NULL);
 873         gtk_selection_data_set(selection_data, selection_data->target, 8,
 874                                uriname, strlen(uriname));
 875
 876         g_free(uriname);
 877         g_free(filename);
 878 }
 879
 880 static void mimeview_save_all(MimeView *mimeview)
 881 {
 882         gchar *dirname;
 883         gchar *defname = NULL;
 884         MimeInfo *partinfo;
 885         MimeInfo *attachment;
 886         gchar buf[1024];
 887
 888         if (!mimeview->opened) return;
 889         if (!mimeview->file) return;
 890
 891         partinfo = mimeview_get_selected_part(mimeview);
 892         g_return_if_fail(partinfo != NULL);
 893
 894         dirname = filesel_select_file(_("Save as"), defname);
 895         if (!dirname) return;
 896
 897         /* return to first children */
 898         if (!partinfo->parent->children) return;  /* multipart container? */
 899         attachment = partinfo->parent->children->next;
 900         /* for each attachment, extract it in the selected dir. */
 901         while (attachment != NULL) {
 902                 static guint subst_cnt = 1;
 903                 gchar *attachdir;
 904                 gchar *attachname = g_strdup(get_part_name(attachment));
 905                 AlertValue aval = G_ALERTDEFAULT;
 906                 gchar *res;
 907
 908                 if (!attachname || !strlen(attachname))
 909                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 910                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 911                 g_snprintf(buf, sizeof(buf), "%s%s",
 912                            dirname,
 913                            (attachname[0] == G_DIR_SEPARATOR)
 914                            ? &attachname[1]
 915                            : attachname);
 916                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 917                 attachdir = g_dirname(buf);
 918                 make_dir_hier(attachdir);
 919                 g_free(attachdir);
 920
 921                 if (is_file_exist(buf)) {
 922                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 923                                               attachname);
 924                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 925                                           _("Cancel"), NULL);
 926                         g_free(res);
 927                 }
 928                 g_free(attachname);
 929
 930                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 931                         alertpanel_error(_("Can't save the part of multipart message."));
 932                 attachment = attachment->next;
 933         }
 934 }
 935
 936 static void mimeview_display_as_text(MimeView *mimeview)
 937 {
 938         MimeInfo *partinfo;
 939
 940         if (!mimeview->opened) return;
 941
 942         partinfo = mimeview_get_selected_part(mimeview);
 943         g_return_if_fail(partinfo != NULL);
 944         mimeview_show_message_part(mimeview, partinfo);
 945 }
 946
 947 static void mimeview_save_as(MimeView *mimeview)
 948 {
 949         gchar *filename;
 950         gchar *defname = NULL;
 951         MimeInfo *partinfo;
 952         gchar *res;
 953
 954         if (!mimeview->opened) return;
 955         if (!mimeview->file) return;
 956
 957         partinfo = mimeview_get_selected_part(mimeview);
 958         g_return_if_fail(partinfo != NULL);
 959
 960         if (partinfo->filename)
 961                 defname = partinfo->filename;
 962         else if (partinfo->name) {
 963                 Xstrdup_a(defname, partinfo->name, return);
 964                 subst_for_filename(defname);
 965         }
 966
 967         filename = filesel_select_file(_("Save as"), defname);
 968         if (!filename) return;
 969         if (is_file_exist(filename)) {
 970                 AlertValue aval;
 971                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 972                                       filename);
 973                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 974                                   _("Cancel"), NULL);
 975                 g_free(res);
 976                 if (G_ALERTDEFAULT != aval) return;
 977         }
 978
 979         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 980                 alertpanel_error
 981                         (_("Can't save the part of multipart message."));
 982 }
 983
 984 static void mimeview_launch(MimeView *mimeview)
 985 {
 986         MimeInfo *partinfo;
 987         gchar *filename;
 988
 989         if (!mimeview->opened) return;
 990         if (!mimeview->file) return;
 991
 992         partinfo = mimeview_get_selected_part(mimeview);
 993         g_return_if_fail(partinfo != NULL);
 994
 995         filename = procmime_get_tmp_file_name(partinfo);
 996
 997         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 998                 alertpanel_error
 999                         (_("Can't save the part of multipart message."));
1000         else
1001                 mimeview_view_file(filename, partinfo, NULL);
1002
1003         g_free(filename);
1004 }
1005
1006 static void mimeview_open_with(MimeView *mimeview)
1007 {
1008         MimeInfo *partinfo;
1009         gchar *filename;
1010         gchar *cmd;
1011
1012         if (!mimeview->opened) return;
1013         if (!mimeview->file) return;
1014
1015         partinfo = mimeview_get_selected_part(mimeview);
1016         g_return_if_fail(partinfo != NULL);
1017
1018         filename = procmime_get_tmp_file_name(partinfo);
1019
1020         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
1021                 alertpanel_error
1022                         (_("Can't save the part of multipart message."));
1023                 g_free(filename);
1024                 return;
1025         }
1026
1027         if (!prefs_common.mime_open_cmd_history)
1028                 prefs_common.mime_open_cmd_history =
1029                         add_history(NULL, prefs_common.mime_open_cmd);
1030
1031         cmd = input_dialog_combo
1032                 (_("Open with"),
1033                  _("Enter the command line to open file:\n"
1034                    "(`%s' will be replaced with file name)"),
1035                  prefs_common.mime_open_cmd,
1036                  prefs_common.mime_open_cmd_history,
1037                  TRUE);
1038         if (cmd) {
1039                 mimeview_view_file(filename, partinfo, cmd);
1040                 g_free(prefs_common.mime_open_cmd);
1041                 prefs_common.mime_open_cmd = cmd;
1042                 prefs_common.mime_open_cmd_history =
1043                         add_history(prefs_common.mime_open_cmd_history, cmd);
1044         }
1045
1046         g_free(filename);
1047 }
1048
1049 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1050                                const gchar *cmdline)
1051 {
1052         static gchar *default_image_cmdline = "display '%s'";
1053         static gchar *default_audio_cmdline = "play '%s'";
1054         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1055         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1056         gchar buf[1024];
1057         gchar m_buf[1024];
1058         const gchar *cmd;
1059         const gchar *def_cmd;
1060         const gchar *p;
1061
1062         if (cmdline) {
1063                 cmd = cmdline;
1064                 def_cmd = NULL;
1065         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1066                 return;
1067         } else if (MIME_IMAGE == partinfo->mime_type) {
1068                 cmd = prefs_common.mime_image_viewer;
1069                 def_cmd = default_image_cmdline;
1070         } else if (MIME_AUDIO == partinfo->mime_type) {
1071                 cmd = prefs_common.mime_audio_player;
1072                 def_cmd = default_audio_cmdline;
1073         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1074                 cmd = prefs_common.uri_cmd;
1075                 def_cmd = default_html_cmdline;
1076         } else {
1077                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1078                            partinfo->content_type, "%s");
1079                 cmd = m_buf;
1080                 def_cmd = NULL;
1081         }
1082
1083         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1084             !strchr(p + 2, '%'))
1085                 g_snprintf(buf, sizeof(buf), cmd, filename);
1086         else {
1087                 if (cmd)
1088                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1089                 if (def_cmd)
1090                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1091                 else
1092                         return;
1093         }
1094
1095         execute_command_line(buf, TRUE);
1096 }
1097
1098 #if USE_GPGME
1099 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1100                              gpointer data)
1101 {
1102         MimeInfo *partinfo;
1103         gchar *part_name;
1104
1105         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1106         g_return_if_fail(partinfo != NULL);
1107
1108         part_name = get_part_name(partinfo);
1109         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1110 }
1111
1112 static void mimeview_update_names(MimeView *mimeview)
1113 {
1114         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1115
1116         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1117 }
1118
1119 static void mimeview_update_signature_info(MimeView *mimeview)
1120 {
1121         MimeInfo *partinfo;
1122
1123         if (!mimeview) return;
1124         if (!mimeview->opened) return;
1125
1126         partinfo = mimeview_get_selected_part(mimeview);
1127         if (!partinfo) return;
1128
1129         if (g_strcasecmp(partinfo->content_type,
1130                          "application/pgp-signature") == 0) {
1131                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1132                 textview_show_signature_part(mimeview->textview, partinfo);
1133         }
1134 }
1135
1136 void mimeview_check_signature(MimeView *mimeview)
1137 {
1138         MimeInfo *mimeinfo;
1139         FILE *fp;
1140
1141         g_return_if_fail (mimeview_is_signed(mimeview));
1142         g_return_if_fail (gpg_started);
1143
1144         mimeinfo = gtk_ctree_node_get_row_data
1145                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1146         g_return_if_fail(mimeinfo != NULL);
1147         g_return_if_fail(mimeview->file != NULL);
1148
1149         while (mimeinfo->parent)
1150                 mimeinfo = mimeinfo->parent;
1151
1152         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1153                 FILE_OP_ERROR(mimeview->file, "fopen");
1154                 return;
1155         }
1156
1157         rfc2015_check_signature(mimeinfo, fp);
1158         fclose(fp);
1159
1160         mimeview_update_names(mimeview);
1161         mimeview_update_signature_info(mimeview);
1162
1163         textview_show_message(mimeview->messageview->textview, mimeinfo,
1164                               mimeview->file);
1165 }
1166 #endif /* USE_GPGME */
1167
1168 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1169 {
1170         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1171 }
1172
1173 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1174 {
1175         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1176 }
1177
1178 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1179 {
1180         GSList *mimeview_list, *viewer_list;
1181
1182         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1183                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1184
1185                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1186                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1187                         mimeview->mimeviewer = NULL;
1188                 }
1189
1190                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1191                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1192
1193                         mimeviewer->destroy_viewer(mimeviewer);
1194                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1195                 }
1196         }
1197
1198         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1199 }