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 #include <unistd.h>
  40 #include <fnmatch.h>
  41
  42 #include "intl.h"
  43 #include "main.h"
  44 #include "mimeview.h"
  45 #include "textview.h"
  46 #include "procmime.h"
  47 #include "summaryview.h"
  48 #include "menu.h"
  49 #include "filesel.h"
  50 #include "alertpanel.h"
  51 #include "inputdialog.h"
  52 #include "utils.h"
  53 #include "gtkutils.h"
  54 #include "prefs_common.h"
  55 #include "rfc2015.h"
  56
  57 typedef enum
  58 {
  59         COL_MIMETYPE = 0,
  60         COL_SIZE     = 1,
  61         COL_NAME     = 2
  62 } MimeViewColumnPos;
  63
  64 #define N_MIMEVIEW_COLS 3
  65
  66 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  67                                                  MimeInfo       *mimeinfo,
  68                                                  GtkCTreeNode   *parent);
  69 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  70                                                  MimeInfo       *partinfo,
  71                                                  GtkCTreeNode   *parent);
  72 static void mimeview_show_message_part          (MimeView       *mimeview,
  73                                                  MimeInfo       *partinfo);
  74 static void mimeview_change_view_type           (MimeView       *mimeview,
  75                                                  MimeViewType    type);
  76 static void mimeview_clear                      (MimeView       *mimeview);
  77
  78 static void mimeview_selected           (GtkCTree       *ctree,
  79                                          GtkCTreeNode   *node,
  80                                          gint            column,
  81                                          MimeView       *mimeview);
  82 static void mimeview_start_drag         (GtkWidget      *widget,
  83                                          gint            button,
  84                                          GdkEvent       *event,
  85                                          MimeView       *mimeview);
  86 static gint mimeview_button_pressed     (GtkWidget      *widget,
  87                                          GdkEventButton *event,
  88                                          MimeView       *mimeview);
  89 static gint mimeview_key_pressed        (GtkWidget      *widget,
  90                                          GdkEventKey    *event,
  91                                          MimeView       *mimeview);
  92
  93 static void mimeview_drag_data_get      (GtkWidget        *widget,
  94                                          GdkDragContext   *drag_context,
  95                                          GtkSelectionData *selection_data,
  96                                          guint             info,
  97                                          guint             time,
  98                                          MimeView         *mimeview);
  99
 100 static void mimeview_display_as_text    (MimeView       *mimeview);
 101 static void mimeview_save_as            (MimeView       *mimeview);
 102 static void mimeview_save_all           (MimeView       *mimeview);
 103 static void mimeview_launch             (MimeView       *mimeview);
 104 static void mimeview_open_with          (MimeView       *mimeview);
 105 static void mimeview_view_file          (const gchar    *filename,
 106                                          MimeInfo       *partinfo,
 107                                          const gchar    *cmdline);
 108
 109 static GtkItemFactoryEntry mimeview_popup_entries[] =
 110 {
 111         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 112         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 113         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 114         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 115         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 116 #if USE_GPGME
 117         ,
 118         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 119 #endif
 120 };
 121
 122 static GtkTargetEntry mimeview_mime_types[] =
 123 {
 124         {"text/uri-list", 0, 0}
 125 };
 126
 127 GSList *mimeviewer_factories;
 128 GSList *mimeviews;
 129
 130 MimeView *mimeview_create(void)
 131 {
 132         MimeView *mimeview;
 133
 134         GtkWidget *notebook;
 135         GtkWidget *vbox;
 136         GtkWidget *paned;
 137         GtkWidget *scrolledwin;
 138         GtkWidget *ctree;
 139         GtkWidget *mime_vbox;
 140         GtkWidget *popupmenu;
 141         GtkItemFactory *popupfactory;
 142         gchar *titles[N_MIMEVIEW_COLS];
 143         gint n_entries;
 144         gint i;
 145
 146         debug_print("Creating MIME view...\n");
 147         mimeview = g_new0(MimeView, 1);
 148
 149         titles[COL_MIMETYPE] = _("MIME Type");
 150         titles[COL_SIZE]     = _("Size");
 151         titles[COL_NAME]     = _("Name");
 152
 153         notebook = gtk_notebook_new();
 154         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 155
 156         vbox = gtk_vbox_new(FALSE, 0);
 157         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 158         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 159                                         _("Text"));
 160
 161         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 162         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 163                                        GTK_POLICY_AUTOMATIC,
 164                                        GTK_POLICY_ALWAYS);
 165         gtk_widget_set_usize(scrolledwin, -1, 80);
 166
 167         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 168         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 169         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 170         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 171                                            GTK_JUSTIFY_RIGHT);
 172         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 174         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 175                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 176                                        GTK_CAN_FOCUS);
 177         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 178
 179         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 180                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 181         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 182                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 183         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 184                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 185         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 186                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 187         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 188                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 189
 190         mime_vbox = gtk_vbox_new(FALSE, 0);
 191
 192         paned = gtk_vpaned_new();
 193         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 194         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 195         gtk_container_add(GTK_CONTAINER(notebook), paned);
 196         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 197                                         _("Attachments"));
 198
 199         gtk_widget_show_all(notebook);
 200
 201         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 202
 203         n_entries = sizeof(mimeview_popup_entries) /
 204                 sizeof(mimeview_popup_entries[0]);
 205         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 206                                       "<MimeView>", &popupfactory, mimeview);
 207
 208         mimeview->notebook     = notebook;
 209         mimeview->vbox         = vbox;
 210         mimeview->paned        = paned;
 211         mimeview->scrolledwin  = scrolledwin;
 212         mimeview->ctree        = ctree;
 213         mimeview->mime_vbox    = mime_vbox;
 214         mimeview->popupmenu    = popupmenu;
 215         mimeview->popupfactory = popupfactory;
 216         mimeview->type         = -1;
 217
 218         mimeviews = g_slist_prepend(mimeviews, mimeview);
 219
 220         return mimeview;
 221 }
 222
 223 void mimeview_init(MimeView *mimeview)
 224 {
 225 }
 226
 227 /*
 228  * Check whether the message is OpenPGP signed
 229  */
 230 #if USE_GPGME
 231 static gboolean mimeview_is_signed(MimeView *mimeview)
 232 {
 233         MimeInfo *partinfo = NULL;
 234
 235         debug_print("mimeview_is signed of %p\n", mimeview);
 236
 237         if (!mimeview) return FALSE;
 238         if (!mimeview->opened) return FALSE;
 239
 240         debug_print("mimeview_is_signed: open\n" );
 241
 242         if (!mimeview->file) return FALSE;
 243
 244         debug_print("mimeview_is_signed: file\n" );
 245
 246         partinfo = gtk_ctree_node_get_row_data
 247                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 248         g_return_val_if_fail(partinfo != NULL, FALSE);
 249
 250         /* walk the tree and see whether there is a signature somewhere */
 251         do {
 252                 if (rfc2015_has_signature(partinfo))
 253                         return TRUE;
 254         } while ((partinfo = partinfo->parent) != NULL);
 255
 256         debug_print("mimeview_is_signed: FALSE\n" );
 257
 258         return FALSE;
 259 }
 260
 261 static void set_unchecked_signature(MimeInfo *mimeinfo)
 262 {
 263         MimeInfo *sig_partinfo;
 264
 265         sig_partinfo = rfc2015_find_signature(mimeinfo);
 266         if (sig_partinfo == NULL) return;
 267
 268         g_free(sig_partinfo->sigstatus);
 269         sig_partinfo->sigstatus =
 270                 g_strdup(_("Right-click here to verify the signature"));
 271
 272         g_free(sig_partinfo->sigstatus_full);
 273         sig_partinfo->sigstatus_full = NULL;
 274 }
 275 #endif /* USE_GPGME */
 276
 277 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 278                            const gchar *file)
 279 {
 280         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 281         GtkCTreeNode *node;
 282         FILE *fp;
 283
 284         mimeview_clear(mimeview);
 285         textview_clear(mimeview->messageview->textview);
 286
 287         g_return_if_fail(file != NULL);
 288         g_return_if_fail(mimeinfo != NULL);
 289
 290         mimeview->mimeinfo = mimeinfo;
 291
 292         mimeview->file = g_strdup(file);
 293
 294 #if USE_GPGME
 295         if (prefs_common.auto_check_signatures && gpg_started) {
 296                 if ((fp = fopen(file, "rb")) == NULL) {
 297                         FILE_OP_ERROR(file, "fopen");
 298                         return;
 299                 }
 300                 rfc2015_check_signature(mimeinfo, fp);
 301                 fclose(fp);
 302         } else
 303                 set_unchecked_signature(mimeinfo);
 304 #endif
 305
 306         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 307                                          mimeview);
 308
 309         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 310
 311         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 312                                            mimeview_selected, mimeview);
 313
 314         /* search first text part */
 315         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 316              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 317                 MimeInfo *partinfo;
 318
 319                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 320                 if (partinfo &&
 321                     (partinfo->mime_type == MIME_TEXT ||
 322                      partinfo->mime_type == MIME_TEXT_HTML))
 323                         break;
 324         }
 325         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 326
 327         if (!node)
 328                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 329
 330         if (node) {
 331                 gtk_ctree_select(ctree, node);
 332                 gtkut_ctree_set_focus_row(ctree, node);
 333                 gtk_widget_grab_focus(mimeview->ctree);
 334         }
 335 }
 336
 337 void mimeview_destroy(MimeView *mimeview)
 338 {
 339         GSList *cur;
 340
 341         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 342                 MimeViewer *viewer = (MimeViewer *) cur->data;
 343                 viewer->destroy_viewer(viewer);
 344         }
 345         g_slist_free(mimeview->viewers);
 346
 347         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 348         g_free(mimeview->file);
 349         g_free(mimeview);
 350
 351         mimeviews = g_slist_remove(mimeviews, mimeview);
 352 }
 353
 354 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 355 {
 356         if (gtk_notebook_get_current_page
 357                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 358                 return NULL;
 359
 360         return gtk_ctree_node_get_row_data
 361                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 362 }
 363
 364 static void mimeview_set_multipart_tree(MimeView *mimeview,
 365                                         MimeInfo *mimeinfo,
 366                                         GtkCTreeNode *parent)
 367 {
 368         GtkCTreeNode *node;
 369
 370         g_return_if_fail(mimeinfo != NULL);
 371
 372         if (mimeinfo->children)
 373                 mimeinfo = mimeinfo->children;
 374
 375         while (mimeinfo != NULL) {
 376                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 377
 378                 if (mimeinfo->children)
 379                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 380                 else if (mimeinfo->sub &&
 381                          mimeinfo->sub->mime_type != MIME_TEXT &&
 382                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 383                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 384                                                     node);
 385                 mimeinfo = mimeinfo->next;
 386         }
 387 }
 388
 389 static gchar *get_part_name(MimeInfo *partinfo)
 390 {
 391 #if USE_GPGME
 392         if (partinfo->sigstatus)
 393                 return partinfo->sigstatus;
 394         else
 395 #endif
 396         if (partinfo->name)
 397                 return partinfo->name;
 398         else if (partinfo->filename)
 399                 return partinfo->filename;
 400         else if (partinfo->description)
 401                 return partinfo->description;
 402         else
 403                 return "";
 404 }
 405
 406 static gchar *get_part_description(MimeInfo *partinfo)
 407 {
 408         if (partinfo->description)
 409                 return partinfo->description;
 410         else if (partinfo->name)
 411                 return partinfo->name;
 412         else if (partinfo->filename)
 413                 return partinfo->filename;
 414         else
 415                 return "";
 416 }
 417
 418 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 419                                           MimeInfo *partinfo,
 420                                           GtkCTreeNode *parent)
 421 {
 422         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 423         GtkCTreeNode *node;
 424         gchar *str[N_MIMEVIEW_COLS];
 425
 426         str[COL_MIMETYPE] =
 427                 partinfo->content_type ? partinfo->content_type : "";
 428         str[COL_SIZE] = to_human_readable(partinfo->size);
 429         if (prefs_common.attach_desc)
 430                 str[COL_NAME] = get_part_description(partinfo);
 431         else
 432                 str[COL_NAME] = get_part_name(partinfo);
 433
 434         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 435                                      NULL, NULL, NULL, NULL,
 436                                      FALSE, TRUE);
 437         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 438
 439         return node;
 440 }
 441
 442 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 443 {
 444         FILE *fp;
 445         const gchar *fname;
 446 #if USE_GPGME
 447         MimeInfo *pi;
 448 #endif
 449
 450         if (!partinfo) return;
 451
 452 #if USE_GPGME
 453         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 454                 ;
 455         fname = pi ? pi->plaintextfile : mimeview->file;
 456 #else
 457         fname = mimeview->file;
 458 #endif /* USE_GPGME */
 459         if (!fname) return;
 460
 461         if ((fp = fopen(fname, "rb")) == NULL) {
 462                 FILE_OP_ERROR(fname, "fopen");
 463                 return;
 464         }
 465
 466         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 467                 FILE_OP_ERROR(mimeview->file, "fseek");
 468                 fclose(fp);
 469                 return;
 470         }
 471
 472         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 473         textview_show_part(mimeview->textview, partinfo, fp);
 474
 475         fclose(fp);
 476 }
 477
 478 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 479 {
 480         GSList *cur;
 481         MimeViewerFactory *factory = NULL;
 482         MimeViewer *viewer = NULL;
 483
 484         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 485                 MimeViewerFactory *curfactory = cur->data;
 486                 gint i = 0;
 487
 488                 while (curfactory->content_types[i] != NULL) {
 489                         debug_print("%s\n", curfactory->content_types[i]);
 490                         if(!fnmatch(curfactory->content_types[i], content_type, 0)) {
 491                                 factory = curfactory;
 492                                 break;
 493                         }
 494                         i++;
 495                 }
 496                 if (factory != NULL)
 497                         break;
 498         }
 499         if (factory == NULL)
 500                 return NULL;
 501
 502         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 503                 MimeViewer *curviewer = cur->data;
 504
 505                 if (curviewer->factory == factory)
 506                         return curviewer;
 507         }
 508         viewer = factory->create_viewer();
 509         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 510
 511         return viewer;
 512 }
 513
 514 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 515 {
 516         gchar *content_type = NULL;
 517         MimeViewer *viewer = NULL;
 518
 519         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 520             (partinfo->name != NULL)) {
 521                 content_type = procmime_get_mime_type(partinfo->name);
 522         } else {
 523                 content_type = g_strdup(partinfo->content_type);
 524         }
 525
 526         if (content_type != NULL) {
 527                 viewer = get_viewer_for_content_type(mimeview, content_type);
 528                 g_free(content_type);
 529         }
 530
 531         return viewer;
 532 }
 533
 534 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 535 {
 536         MimeViewer *viewer;
 537
 538         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 539         if (viewer == NULL) {
 540                 if (mimeview->mimeviewer != NULL)
 541                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 542                 mimeview->mimeviewer = NULL;
 543                 return FALSE;
 544         }
 545
 546         if (mimeview->mimeviewer != viewer) {
 547                 if (mimeview->mimeviewer != NULL)
 548                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 549                 mimeview->mimeviewer = viewer;
 550                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 551         }
 552         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 553
 554         return TRUE;
 555 }
 556
 557 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 558 {
 559         TextView  *textview  = mimeview->textview;
 560         GList *children;
 561
 562         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 563             (mimeview->type == type)) return;
 564
 565         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 566         if (children) {
 567                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 568                                        GTK_WIDGET(children->data));
 569                 g_list_free(children);
 570         }
 571
 572         switch (type) {
 573         case MIMEVIEW_TEXT:
 574                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 575                                   GTK_WIDGET_PTR(textview));
 576                 break;
 577         case MIMEVIEW_VIEWER:
 578                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 579                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
 580                 break;
 581         default:
 582                 return;
 583         }
 584
 585         mimeview->type = type;
 586 }
 587
 588 static void mimeview_clear(MimeView *mimeview)
 589 {
 590         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 591
 592         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 593         mimeview->mimeinfo = NULL;
 594
 595         gtk_clist_clear(clist);
 596         textview_clear(mimeview->textview);
 597         if (mimeview->mimeviewer != NULL)
 598                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 599
 600         mimeview->opened = NULL;
 601
 602         g_free(mimeview->file);
 603         mimeview->file = NULL;
 604
 605         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 606 }
 607
 608 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 609                               MimeView *mimeview)
 610 {
 611         MimeInfo *partinfo;
 612
 613         if (mimeview->opened == node) return;
 614         mimeview->opened = node;
 615         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 616
 617         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 618         if (!partinfo) return;
 619
 620         /* ungrab the mouse event */
 621         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 622                 gtk_grab_remove(GTK_WIDGET(ctree));
 623                 if (gdk_pointer_is_grabbed())
 624                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 625         }
 626
 627         mimeview->textview->default_text = FALSE;
 628
 629         if (!mimeview_show_part(mimeview, partinfo)) {
 630                 switch (partinfo->mime_type) {
 631                 case MIME_TEXT:
 632                 case MIME_TEXT_HTML:
 633                 case MIME_TEXT_ENRICHED:
 634                 case MIME_MESSAGE_RFC822:
 635                 case MIME_MULTIPART:
 636                         mimeview_show_message_part(mimeview, partinfo);
 637
 638                         break;
 639                 default:
 640                         mimeview->textview->default_text = TRUE;
 641                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 642 #if USE_GPGME
 643                         if (g_strcasecmp(partinfo->content_type,
 644                                          "application/pgp-signature") == 0)
 645                                 textview_show_signature_part(mimeview->textview,
 646                                                              partinfo);
 647                         else
 648 #endif
 649                                 textview_show_mime_part(mimeview->textview, partinfo);
 650                         break;
 651                 }
 652         }
 653 }
 654
 655 static void mimeview_start_drag(GtkWidget *widget, gint button,
 656                                 GdkEvent *event, MimeView *mimeview)
 657 {
 658         GtkTargetList *list;
 659         GdkDragContext *context;
 660         MimeInfo *partinfo;
 661
 662         g_return_if_fail(mimeview != NULL);
 663
 664         partinfo = mimeview_get_selected_part(mimeview);
 665         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 666
 667         list = gtk_target_list_new(mimeview_mime_types, 1);
 668         context = gtk_drag_begin(widget, list,
 669                                  GDK_ACTION_COPY, button, event);
 670         gtk_drag_set_icon_default(context);
 671 }
 672
 673 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 674                                     MimeView *mimeview)
 675 {
 676         GtkCList *clist = GTK_CLIST(widget);
 677         MimeInfo *partinfo;
 678         gint row, column;
 679
 680         if (!event) return FALSE;
 681
 682         if (event->button == 2 || event->button == 3) {
 683                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 684                                                   &row, &column))
 685                         return FALSE;
 686                 gtk_clist_unselect_all(clist);
 687                 gtk_clist_select_row(clist, row, column);
 688                 gtkut_clist_set_focus_row(clist, row);
 689         }
 690
 691         if (event->button == 2 ||
 692             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 693                 /* call external program for image, audio or html */
 694                 mimeview_launch(mimeview);
 695         } else if (event->button == 3) {
 696                 partinfo = mimeview_get_selected_part(mimeview);
 697                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 698                                  partinfo->mime_type == MIME_TEXT_HTML ||
 699                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 700                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 701                                  partinfo->mime_type == MIME_IMAGE ||
 702                                  partinfo->mime_type == MIME_MULTIPART))
 703                         menu_set_sensitive(mimeview->popupfactory,
 704                                            "/Display as text", FALSE);
 705                 else
 706                         menu_set_sensitive(mimeview->popupfactory,
 707                                            "/Display as text", TRUE);
 708                 if (partinfo &&
 709                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 710                         menu_set_sensitive(mimeview->popupfactory,
 711                                            "/Open", FALSE);
 712                 else
 713                         menu_set_sensitive(mimeview->popupfactory,
 714                                            "/Open", TRUE);
 715
 716 #if USE_GPGME
 717                 menu_set_sensitive(mimeview->popupfactory,
 718                                    "/Check signature",
 719                                    mimeview_is_signed(mimeview));
 720 #endif
 721
 722                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 723                                NULL, NULL, NULL, NULL,
 724                                event->button, event->time);
 725         }
 726
 727         return TRUE;
 728 }
 729
 730 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 731 {
 732         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 733 }
 734
 735 #define BREAK_ON_MODIFIER_KEY() \
 736         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 737
 738 #define KEY_PRESS_EVENT_STOP() \
 739         if (gtk_signal_n_emissions_by_name \
 740                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 741                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 742                                              "key_press_event"); \
 743         }
 744
 745 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 746                                  MimeView *mimeview)
 747 {
 748         SummaryView *summaryview;
 749         GtkCTree *ctree = GTK_CTREE(widget);
 750         GtkCTreeNode *node;
 751
 752         if (!event) return FALSE;
 753         if (!mimeview->opened) return FALSE;
 754
 755         switch (event->keyval) {
 756         case GDK_space:
 757                 if (textview_scroll_page(mimeview->textview, FALSE))
 758                         return TRUE;
 759
 760                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 761                 if (node) {
 762                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 763                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 764                         return TRUE;
 765                 }
 766                 break;
 767         case GDK_BackSpace:
 768                 textview_scroll_page(mimeview->textview, TRUE);
 769                 return TRUE;
 770         case GDK_Return:
 771                 textview_scroll_one_line(mimeview->textview,
 772                                          (event->state & GDK_MOD1_MASK) != 0);
 773                 return TRUE;
 774         case GDK_n:
 775         case GDK_N:
 776                 BREAK_ON_MODIFIER_KEY();
 777                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 778                 KEY_PRESS_EVENT_STOP();
 779
 780                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 781                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 782                 return TRUE;
 783         case GDK_p:
 784         case GDK_P:
 785                 BREAK_ON_MODIFIER_KEY();
 786                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 787                 KEY_PRESS_EVENT_STOP();
 788
 789                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 790                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 791                 return TRUE;
 792         case GDK_y:
 793                 BREAK_ON_MODIFIER_KEY();
 794                 KEY_PRESS_EVENT_STOP();
 795                 mimeview_save_as(mimeview);
 796                 return TRUE;
 797         case GDK_t:
 798                 BREAK_ON_MODIFIER_KEY();
 799                 KEY_PRESS_EVENT_STOP();
 800                 mimeview_display_as_text(mimeview);
 801                 return TRUE;
 802         case GDK_l:
 803                 BREAK_ON_MODIFIER_KEY();
 804                 KEY_PRESS_EVENT_STOP();
 805                 mimeview_launch(mimeview);
 806                 return TRUE;
 807         default:
 808                 break;
 809         }
 810
 811         if (!mimeview->messageview->mainwin) return FALSE;
 812         summaryview = mimeview->messageview->mainwin->summaryview;
 813         summary_pass_key_press_event(summaryview, event);
 814         return TRUE;
 815 }
 816
 817 static void mimeview_drag_data_get(GtkWidget        *widget,
 818                                    GdkDragContext   *drag_context,
 819                                    GtkSelectionData *selection_data,
 820                                    guint             info,
 821                                    guint             time,
 822                                    MimeView         *mimeview)
 823 {
 824         gchar *filename, *uriname;
 825         MimeInfo *partinfo;
 826
 827         if (!mimeview->opened) return;
 828         if (!mimeview->file) return;
 829
 830         partinfo = mimeview_get_selected_part(mimeview);
 831         if (!partinfo) return;
 832         if (!partinfo->filename && !partinfo->name) return;
 833
 834         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 835         filename = g_basename(filename);
 836         if (*filename == '\0') return;
 837
 838         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 839                                filename, NULL);
 840
 841         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 842                 alertpanel_error
 843                         (_("Can't save the part of multipart message."));
 844
 845         uriname = g_strconcat("file:/", filename, NULL);
 846         gtk_selection_data_set(selection_data, selection_data->target, 8,
 847                                uriname, strlen(uriname));
 848
 849         g_free(uriname);
 850         g_free(filename);
 851 }
 852
 853 static void mimeview_save_all(MimeView *mimeview)
 854 {
 855         gchar *dirname;
 856         gchar *defname = NULL;
 857         MimeInfo *partinfo;
 858         MimeInfo *attachment;
 859         gchar buf[1024];
 860
 861         if (!mimeview->opened) return;
 862         if (!mimeview->file) return;
 863
 864         partinfo = mimeview_get_selected_part(mimeview);
 865         g_return_if_fail(partinfo != NULL);
 866
 867         dirname = filesel_select_file(_("Save as"), defname);
 868         if (!dirname) return;
 869
 870         /* return to first children */
 871         if (!partinfo->parent->children) return;  /* multipart container? */
 872         attachment = partinfo->parent->children->next;
 873         /* for each attachment, extract it in the selected dir. */
 874         while (attachment != NULL) {
 875                 static guint subst_cnt = 1;
 876                 gchar *attachdir;
 877                 gchar *attachname = g_strdup(get_part_name(attachment));
 878                 AlertValue aval = G_ALERTDEFAULT;
 879                 gchar *res;
 880
 881                 if (!attachname || !strlen(attachname))
 882                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 883                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 884                 g_snprintf(buf, sizeof(buf), "%s%s",
 885                            dirname,
 886                            (attachname[0] == G_DIR_SEPARATOR)
 887                            ? &attachname[1]
 888                            : attachname);
 889                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 890                 attachdir = g_dirname(buf);
 891                 make_dir_hier(attachdir);
 892                 g_free(attachdir);
 893
 894                 if (is_file_exist(buf)) {
 895                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 896                                               attachname);
 897                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 898                                           _("Cancel"), NULL);
 899                         g_free(res);
 900                 }
 901                 g_free(attachname);
 902
 903                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 904                         alertpanel_error(_("Can't save the part of multipart message."));
 905                 attachment = attachment->next;
 906         }
 907 }
 908
 909 static void mimeview_display_as_text(MimeView *mimeview)
 910 {
 911         MimeInfo *partinfo;
 912
 913         if (!mimeview->opened) return;
 914
 915         partinfo = mimeview_get_selected_part(mimeview);
 916         g_return_if_fail(partinfo != NULL);
 917         mimeview_show_message_part(mimeview, partinfo);
 918 }
 919
 920 static void mimeview_save_as(MimeView *mimeview)
 921 {
 922         gchar *filename;
 923         gchar *defname = NULL;
 924         MimeInfo *partinfo;
 925         gchar *res;
 926
 927         if (!mimeview->opened) return;
 928         if (!mimeview->file) return;
 929
 930         partinfo = mimeview_get_selected_part(mimeview);
 931         g_return_if_fail(partinfo != NULL);
 932
 933         if (partinfo->filename)
 934                 defname = partinfo->filename;
 935         else if (partinfo->name) {
 936                 Xstrdup_a(defname, partinfo->name, return);
 937                 subst_for_filename(defname);
 938         }
 939
 940         filename = filesel_select_file(_("Save as"), defname);
 941         if (!filename) return;
 942         if (is_file_exist(filename)) {
 943                 AlertValue aval;
 944                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 945                                       filename);
 946                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 947                                   _("Cancel"), NULL);
 948                 g_free(res);
 949                 if (G_ALERTDEFAULT != aval) return;
 950         }
 951
 952         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 953                 alertpanel_error
 954                         (_("Can't save the part of multipart message."));
 955 }
 956
 957 static void mimeview_launch(MimeView *mimeview)
 958 {
 959         MimeInfo *partinfo;
 960         gchar *filename;
 961
 962         if (!mimeview->opened) return;
 963         if (!mimeview->file) return;
 964
 965         partinfo = mimeview_get_selected_part(mimeview);
 966         g_return_if_fail(partinfo != NULL);
 967
 968         filename = procmime_get_tmp_file_name(partinfo);
 969
 970         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 971                 alertpanel_error
 972                         (_("Can't save the part of multipart message."));
 973         else
 974                 mimeview_view_file(filename, partinfo, NULL);
 975
 976         g_free(filename);
 977 }
 978
 979 static void mimeview_open_with(MimeView *mimeview)
 980 {
 981         MimeInfo *partinfo;
 982         gchar *filename;
 983         gchar *cmd;
 984
 985         if (!mimeview->opened) return;
 986         if (!mimeview->file) return;
 987
 988         partinfo = mimeview_get_selected_part(mimeview);
 989         g_return_if_fail(partinfo != NULL);
 990
 991         filename = procmime_get_tmp_file_name(partinfo);
 992
 993         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 994                 alertpanel_error
 995                         (_("Can't save the part of multipart message."));
 996                 g_free(filename);
 997                 return;
 998         }
 999
1000         if (!prefs_common.mime_open_cmd_history)
1001                 prefs_common.mime_open_cmd_history =
1002                         add_history(NULL, prefs_common.mime_open_cmd);
1003
1004         cmd = input_dialog_combo
1005                 (_("Open with"),
1006                  _("Enter the command line to open file:\n"
1007                    "(`%s' will be replaced with file name)"),
1008                  prefs_common.mime_open_cmd,
1009                  prefs_common.mime_open_cmd_history,
1010                  TRUE);
1011         if (cmd) {
1012                 mimeview_view_file(filename, partinfo, cmd);
1013                 g_free(prefs_common.mime_open_cmd);
1014                 prefs_common.mime_open_cmd = cmd;
1015                 prefs_common.mime_open_cmd_history =
1016                         add_history(prefs_common.mime_open_cmd_history, cmd);
1017         }
1018
1019         g_free(filename);
1020 }
1021
1022 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1023                                const gchar *cmdline)
1024 {
1025         static gchar *default_image_cmdline = "display '%s'";
1026         static gchar *default_audio_cmdline = "play '%s'";
1027         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1028         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1029         gchar buf[1024];
1030         gchar m_buf[1024];
1031         const gchar *cmd;
1032         const gchar *def_cmd;
1033         const gchar *p;
1034
1035         if (cmdline) {
1036                 cmd = cmdline;
1037                 def_cmd = NULL;
1038         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1039                 return;
1040         } else if (MIME_IMAGE == partinfo->mime_type) {
1041                 cmd = prefs_common.mime_image_viewer;
1042                 def_cmd = default_image_cmdline;
1043         } else if (MIME_AUDIO == partinfo->mime_type) {
1044                 cmd = prefs_common.mime_audio_player;
1045                 def_cmd = default_audio_cmdline;
1046         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1047                 cmd = prefs_common.uri_cmd;
1048                 def_cmd = default_html_cmdline;
1049         } else {
1050                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1051                            partinfo->content_type, "%s");
1052                 cmd = m_buf;
1053                 def_cmd = NULL;
1054         }
1055
1056         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1057             !strchr(p + 2, '%'))
1058                 g_snprintf(buf, sizeof(buf), cmd, filename);
1059         else {
1060                 if (cmd)
1061                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1062                 if (def_cmd)
1063                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1064                 else
1065                         return;
1066         }
1067
1068         execute_command_line(buf, TRUE);
1069 }
1070
1071 #if USE_GPGME
1072 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1073                              gpointer data)
1074 {
1075         MimeInfo *partinfo;
1076         gchar *part_name;
1077
1078         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1079         g_return_if_fail(partinfo != NULL);
1080
1081         part_name = get_part_name(partinfo);
1082         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1083 }
1084
1085 static void mimeview_update_names(MimeView *mimeview)
1086 {
1087         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1088
1089         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1090 }
1091
1092 static void mimeview_update_signature_info(MimeView *mimeview)
1093 {
1094         MimeInfo *partinfo;
1095
1096         if (!mimeview) return;
1097         if (!mimeview->opened) return;
1098
1099         partinfo = mimeview_get_selected_part(mimeview);
1100         if (!partinfo) return;
1101
1102         if (g_strcasecmp(partinfo->content_type,
1103                          "application/pgp-signature") == 0) {
1104                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1105                 textview_show_signature_part(mimeview->textview, partinfo);
1106         }
1107 }
1108
1109 void mimeview_check_signature(MimeView *mimeview)
1110 {
1111         MimeInfo *mimeinfo;
1112         FILE *fp;
1113
1114         g_return_if_fail (mimeview_is_signed(mimeview));
1115         g_return_if_fail (gpg_started);
1116
1117         mimeinfo = gtk_ctree_node_get_row_data
1118                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1119         g_return_if_fail(mimeinfo != NULL);
1120         g_return_if_fail(mimeview->file != NULL);
1121
1122         while (mimeinfo->parent)
1123                 mimeinfo = mimeinfo->parent;
1124
1125         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1126                 FILE_OP_ERROR(mimeview->file, "fopen");
1127                 return;
1128         }
1129
1130         rfc2015_check_signature(mimeinfo, fp);
1131         fclose(fp);
1132
1133         mimeview_update_names(mimeview);
1134         mimeview_update_signature_info(mimeview);
1135
1136         textview_show_message(mimeview->messageview->textview, mimeinfo,
1137                               mimeview->file);
1138 }
1139 #endif /* USE_GPGME */
1140
1141 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1142 {
1143         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1144 }
1145
1146 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1147 {
1148         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1149 }
1150
1151 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1152 {
1153         GSList *mimeview_list, *viewer_list;
1154
1155         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1156                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1157
1158                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1159                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1160                         mimeview->mimeviewer = NULL;
1161                 }
1162
1163                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1164                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1165
1166                         mimeviewer->destroy_viewer(mimeviewer);
1167                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1168                 }
1169         }
1170
1171         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1172 }