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
  61 typedef enum
  62 {
  63         COL_MIMETYPE = 0,
  64         COL_SIZE     = 1,
  65         COL_NAME     = 2
  66 } MimeViewColumnPos;
  67
  68 #define N_MIMEVIEW_COLS 3
  69
  70 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  71                                                  MimeInfo       *mimeinfo,
  72                                                  GtkCTreeNode   *parent);
  73 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  74                                                  MimeInfo       *partinfo,
  75                                                  GtkCTreeNode   *parent);
  76 static void mimeview_show_message_part          (MimeView       *mimeview,
  77                                                  MimeInfo       *partinfo);
  78 static void mimeview_change_view_type           (MimeView       *mimeview,
  79                                                  MimeViewType    type);
  80 static void mimeview_clear                      (MimeView       *mimeview);
  81
  82 static void mimeview_selected           (GtkCTree       *ctree,
  83                                          GtkCTreeNode   *node,
  84                                          gint            column,
  85                                          MimeView       *mimeview);
  86 static void mimeview_start_drag         (GtkWidget      *widget,
  87                                          gint            button,
  88                                          GdkEvent       *event,
  89                                          MimeView       *mimeview);
  90 static gint mimeview_button_pressed     (GtkWidget      *widget,
  91                                          GdkEventButton *event,
  92                                          MimeView       *mimeview);
  93 static gint mimeview_key_pressed        (GtkWidget      *widget,
  94                                          GdkEventKey    *event,
  95                                          MimeView       *mimeview);
  96
  97 static void mimeview_drag_data_get      (GtkWidget        *widget,
  98                                          GdkDragContext   *drag_context,
  99                                          GtkSelectionData *selection_data,
 100                                          guint             info,
 101                                          guint             time,
 102                                          MimeView         *mimeview);
 103
 104 static void mimeview_display_as_text    (MimeView       *mimeview);
 105 static void mimeview_save_as            (MimeView       *mimeview);
 106 static void mimeview_save_all           (MimeView       *mimeview);
 107 static void mimeview_launch             (MimeView       *mimeview);
 108 static void mimeview_open_with          (MimeView       *mimeview);
 109 static void mimeview_view_file          (const gchar    *filename,
 110                                          MimeInfo       *partinfo,
 111                                          const gchar    *cmdline);
 112
 113 static GtkItemFactoryEntry mimeview_popup_entries[] =
 114 {
 115         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 116         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 117         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 118         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 119         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 120 #if USE_GPGME
 121         ,
 122         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 123 #endif
 124 };
 125
 126 static GtkTargetEntry mimeview_mime_types[] =
 127 {
 128         {"text/uri-list", 0, 0}
 129 };
 130
 131 GSList *mimeviewer_factories;
 132 GSList *mimeviews;
 133
 134 MimeView *mimeview_create(void)
 135 {
 136         MimeView *mimeview;
 137
 138         GtkWidget *notebook;
 139         GtkWidget *vbox;
 140         GtkWidget *paned;
 141         GtkWidget *scrolledwin;
 142         GtkWidget *ctree;
 143         GtkWidget *mime_vbox;
 144         GtkWidget *popupmenu;
 145         GtkItemFactory *popupfactory;
 146         gchar *titles[N_MIMEVIEW_COLS];
 147         gint n_entries;
 148         gint i;
 149
 150         debug_print("Creating MIME view...\n");
 151         mimeview = g_new0(MimeView, 1);
 152
 153         titles[COL_MIMETYPE] = _("MIME Type");
 154         titles[COL_SIZE]     = _("Size");
 155         titles[COL_NAME]     = _("Name");
 156
 157         notebook = gtk_notebook_new();
 158         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 159
 160         vbox = gtk_vbox_new(FALSE, 0);
 161         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 162         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 163                                         _("Text"));
 164
 165         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 166         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 167                                        GTK_POLICY_AUTOMATIC,
 168                                        GTK_POLICY_ALWAYS);
 169         gtk_widget_set_usize(scrolledwin, -1, 80);
 170
 171         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 172         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 173         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 174         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 175                                            GTK_JUSTIFY_RIGHT);
 176         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 177         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 178         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 179                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 180                                        GTK_CAN_FOCUS);
 181         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 182
 183         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 184                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 185         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 186                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 187         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 188                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 189         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 190                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 191         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 192                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 193
 194         mime_vbox = gtk_vbox_new(FALSE, 0);
 195
 196         paned = gtk_vpaned_new();
 197         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 198         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 199         gtk_container_add(GTK_CONTAINER(notebook), paned);
 200         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 201                                         _("Attachments"));
 202
 203         gtk_widget_show_all(notebook);
 204
 205         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 206
 207         n_entries = sizeof(mimeview_popup_entries) /
 208                 sizeof(mimeview_popup_entries[0]);
 209         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 210                                       "<MimeView>", &popupfactory, mimeview);
 211
 212         mimeview->notebook     = notebook;
 213         mimeview->vbox         = vbox;
 214         mimeview->paned        = paned;
 215         mimeview->scrolledwin  = scrolledwin;
 216         mimeview->ctree        = ctree;
 217         mimeview->mime_vbox    = mime_vbox;
 218         mimeview->popupmenu    = popupmenu;
 219         mimeview->popupfactory = popupfactory;
 220         mimeview->type         = -1;
 221
 222         mimeviews = g_slist_prepend(mimeviews, mimeview);
 223
 224         return mimeview;
 225 }
 226
 227 void mimeview_init(MimeView *mimeview)
 228 {
 229         textview_init(mimeview->textview);
 230 }
 231
 232 /*
 233  * Check whether the message is OpenPGP signed
 234  */
 235 #if USE_GPGME
 236 static gboolean mimeview_is_signed(MimeView *mimeview)
 237 {
 238         MimeInfo *partinfo = NULL;
 239
 240         debug_print("mimeview_is signed of %p\n", mimeview);
 241
 242         if (!mimeview) return FALSE;
 243         if (!mimeview->opened) return FALSE;
 244
 245         debug_print("mimeview_is_signed: open\n" );
 246
 247         if (!mimeview->file) return FALSE;
 248
 249         debug_print("mimeview_is_signed: file\n" );
 250
 251         partinfo = gtk_ctree_node_get_row_data
 252                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 253         g_return_val_if_fail(partinfo != NULL, FALSE);
 254
 255         /* walk the tree and see whether there is a signature somewhere */
 256         do {
 257                 if (rfc2015_has_signature(partinfo))
 258                         return TRUE;
 259         } while ((partinfo = partinfo->parent) != NULL);
 260
 261         debug_print("mimeview_is_signed: FALSE\n" );
 262
 263         return FALSE;
 264 }
 265
 266 static void set_unchecked_signature(MimeInfo *mimeinfo)
 267 {
 268         MimeInfo *sig_partinfo;
 269
 270         sig_partinfo = rfc2015_find_signature(mimeinfo);
 271         if (sig_partinfo == NULL) return;
 272
 273         g_free(sig_partinfo->sigstatus);
 274         sig_partinfo->sigstatus =
 275                 g_strdup(_("Right-click here to verify the signature"));
 276
 277         g_free(sig_partinfo->sigstatus_full);
 278         sig_partinfo->sigstatus_full = NULL;
 279 }
 280 #endif /* USE_GPGME */
 281
 282 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 283                            const gchar *file)
 284 {
 285         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 286         GtkCTreeNode *node;
 287         FILE *fp;
 288
 289         mimeview_clear(mimeview);
 290         textview_clear(mimeview->messageview->textview);
 291
 292         g_return_if_fail(file != NULL);
 293         g_return_if_fail(mimeinfo != NULL);
 294
 295         mimeview->mimeinfo = mimeinfo;
 296
 297         mimeview->file = g_strdup(file);
 298
 299 #if USE_GPGME
 300         if (prefs_common.auto_check_signatures && gpg_started) {
 301                 if ((fp = fopen(file, "rb")) == NULL) {
 302                         FILE_OP_ERROR(file, "fopen");
 303                         return;
 304                 }
 305                 rfc2015_check_signature(mimeinfo, fp);
 306                 fclose(fp);
 307         } else
 308                 set_unchecked_signature(mimeinfo);
 309 #endif
 310
 311         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 312                                          mimeview);
 313
 314         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 315
 316         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 317                                            mimeview_selected, mimeview);
 318
 319         /* search first text part */
 320         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 321              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 322                 MimeInfo *partinfo;
 323
 324                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 325                 if (partinfo &&
 326                     (partinfo->mime_type == MIME_TEXT ||
 327                      partinfo->mime_type == MIME_TEXT_HTML))
 328                         break;
 329         }
 330         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 331
 332         if (!node)
 333                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 334
 335         if (node) {
 336                 gtk_ctree_select(ctree, node);
 337                 gtkut_ctree_set_focus_row(ctree, node);
 338                 gtk_widget_grab_focus(mimeview->ctree);
 339         }
 340 }
 341
 342 void mimeview_destroy(MimeView *mimeview)
 343 {
 344         GSList *cur;
 345
 346         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 347                 MimeViewer *viewer = (MimeViewer *) cur->data;
 348                 viewer->destroy_viewer(viewer);
 349         }
 350         g_slist_free(mimeview->viewers);
 351
 352         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 353         g_free(mimeview->file);
 354         g_free(mimeview);
 355
 356         mimeviews = g_slist_remove(mimeviews, mimeview);
 357 }
 358
 359 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 360 {
 361         if (gtk_notebook_get_current_page
 362                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 363                 return NULL;
 364
 365         return gtk_ctree_node_get_row_data
 366                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 367 }
 368
 369 static void mimeview_set_multipart_tree(MimeView *mimeview,
 370                                         MimeInfo *mimeinfo,
 371                                         GtkCTreeNode *parent)
 372 {
 373         GtkCTreeNode *node;
 374
 375         g_return_if_fail(mimeinfo != NULL);
 376
 377         if (mimeinfo->children)
 378                 mimeinfo = mimeinfo->children;
 379
 380         while (mimeinfo != NULL) {
 381                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 382
 383                 if (mimeinfo->children)
 384                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 385                 else if (mimeinfo->sub &&
 386                          mimeinfo->sub->mime_type != MIME_TEXT &&
 387                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 388                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 389                                                     node);
 390                 mimeinfo = mimeinfo->next;
 391         }
 392 }
 393
 394 static gchar *get_part_name(MimeInfo *partinfo)
 395 {
 396 #if USE_GPGME
 397         if (partinfo->sigstatus)
 398                 return partinfo->sigstatus;
 399         else
 400 #endif
 401         if (partinfo->name)
 402                 return partinfo->name;
 403         else if (partinfo->filename)
 404                 return partinfo->filename;
 405         else if (partinfo->description)
 406                 return partinfo->description;
 407         else
 408                 return "";
 409 }
 410
 411 static gchar *get_part_description(MimeInfo *partinfo)
 412 {
 413         if (partinfo->description)
 414                 return partinfo->description;
 415         else if (partinfo->name)
 416                 return partinfo->name;
 417         else if (partinfo->filename)
 418                 return partinfo->filename;
 419         else
 420                 return "";
 421 }
 422
 423 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 424                                           MimeInfo *partinfo,
 425                                           GtkCTreeNode *parent)
 426 {
 427         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 428         GtkCTreeNode *node;
 429         gchar *str[N_MIMEVIEW_COLS];
 430
 431         str[COL_MIMETYPE] =
 432                 partinfo->content_type ? partinfo->content_type : "";
 433         str[COL_SIZE] = to_human_readable(partinfo->size);
 434         if (prefs_common.attach_desc)
 435                 str[COL_NAME] = get_part_description(partinfo);
 436         else
 437                 str[COL_NAME] = get_part_name(partinfo);
 438
 439         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 440                                      NULL, NULL, NULL, NULL,
 441                                      FALSE, TRUE);
 442         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 443
 444         return node;
 445 }
 446
 447 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 448 {
 449         FILE *fp;
 450         const gchar *fname;
 451 #if USE_GPGME
 452         MimeInfo *pi;
 453 #endif
 454
 455         if (!partinfo) return;
 456
 457 #if USE_GPGME
 458         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 459                 ;
 460         fname = pi ? pi->plaintextfile : mimeview->file;
 461 #else
 462         fname = mimeview->file;
 463 #endif /* USE_GPGME */
 464         if (!fname) return;
 465
 466         if ((fp = fopen(fname, "rb")) == NULL) {
 467                 FILE_OP_ERROR(fname, "fopen");
 468                 return;
 469         }
 470
 471         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 472                 FILE_OP_ERROR(mimeview->file, "fseek");
 473                 fclose(fp);
 474                 return;
 475         }
 476
 477         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 478         textview_show_part(mimeview->textview, partinfo, fp);
 479
 480         fclose(fp);
 481 }
 482
 483 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 484 {
 485         GSList *cur;
 486         MimeViewerFactory *factory = NULL;
 487         MimeViewer *viewer = NULL;
 488
 489 /*
 490  * FNM_CASEFOLD is a GNU extension
 491  * if its not defined copy the string to the stack and
 492  * convert the copy to lower case
 493  */
 494 #ifndef FNM_CASEFOLD
 495 #define FNM_CASEFOLD 0
 496         Xstrdup_a(content_type, content_type, return NULL);
 497         g_strdown((gchar *)content_type);
 498 #endif
 499
 500         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 501                 MimeViewerFactory *curfactory = cur->data;
 502                 gint i = 0;
 503
 504                 while (curfactory->content_types[i] != NULL) {
 505                         debug_print("%s\n", curfactory->content_types[i]);
 506                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 507                                 factory = curfactory;
 508                                 break;
 509                         }
 510                         i++;
 511                 }
 512                 if (factory != NULL)
 513                         break;
 514         }
 515         if (factory == NULL)
 516                 return NULL;
 517
 518         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 519                 MimeViewer *curviewer = cur->data;
 520
 521                 if (curviewer->factory == factory)
 522                         return curviewer;
 523         }
 524         viewer = factory->create_viewer();
 525         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 526
 527         return viewer;
 528 }
 529
 530 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 531 {
 532         gchar *content_type = NULL;
 533         MimeViewer *viewer = NULL;
 534
 535         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 536             (partinfo->name != NULL)) {
 537                 content_type = procmime_get_mime_type(partinfo->name);
 538         } else {
 539                 content_type = g_strdup(partinfo->content_type);
 540         }
 541
 542         if (content_type != NULL) {
 543                 viewer = get_viewer_for_content_type(mimeview, content_type);
 544                 g_free(content_type);
 545         }
 546
 547         return viewer;
 548 }
 549
 550 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 551 {
 552         MimeViewer *viewer;
 553
 554         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 555         if (viewer == NULL) {
 556                 if (mimeview->mimeviewer != NULL)
 557                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 558                 mimeview->mimeviewer = NULL;
 559                 return FALSE;
 560         }
 561
 562         if (mimeview->mimeviewer != viewer) {
 563                 if (mimeview->mimeviewer != NULL)
 564                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 565                 mimeview->mimeviewer = viewer;
 566                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 567         }
 568         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 569
 570         return TRUE;
 571 }
 572
 573 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 574 {
 575         TextView  *textview  = mimeview->textview;
 576         GList *children;
 577
 578         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 579             (mimeview->type == type)) return;
 580
 581         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 582         if (children) {
 583                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 584                                        GTK_WIDGET(children->data));
 585                 g_list_free(children);
 586         }
 587
 588         switch (type) {
 589         case MIMEVIEW_TEXT:
 590                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 591                                   GTK_WIDGET_PTR(textview));
 592                 break;
 593         case MIMEVIEW_VIEWER:
 594                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 595                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
 596                 break;
 597         default:
 598                 return;
 599         }
 600
 601         mimeview->type = type;
 602 }
 603
 604 static void mimeview_clear(MimeView *mimeview)
 605 {
 606         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 607
 608         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 609         mimeview->mimeinfo = NULL;
 610
 611         gtk_clist_clear(clist);
 612         textview_clear(mimeview->textview);
 613         if (mimeview->mimeviewer != NULL)
 614                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 615
 616         mimeview->opened = NULL;
 617
 618         g_free(mimeview->file);
 619         mimeview->file = NULL;
 620
 621         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 622 }
 623
 624 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 625                               MimeView *mimeview)
 626 {
 627         MimeInfo *partinfo;
 628
 629         if (mimeview->opened == node) return;
 630         mimeview->opened = node;
 631         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 632
 633         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 634         if (!partinfo) return;
 635
 636         /* ungrab the mouse event */
 637         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 638                 gtk_grab_remove(GTK_WIDGET(ctree));
 639                 if (gdk_pointer_is_grabbed())
 640                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 641         }
 642
 643         mimeview->textview->default_text = FALSE;
 644
 645         if (!mimeview_show_part(mimeview, partinfo)) {
 646                 switch (partinfo->mime_type) {
 647                 case MIME_TEXT:
 648                 case MIME_TEXT_HTML:
 649                 case MIME_TEXT_ENRICHED:
 650                 case MIME_MESSAGE_RFC822:
 651                 case MIME_MULTIPART:
 652                         mimeview_show_message_part(mimeview, partinfo);
 653
 654                         break;
 655                 default:
 656                         mimeview->textview->default_text = TRUE;
 657                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 658 #if USE_GPGME
 659                         if (g_strcasecmp(partinfo->content_type,
 660                                          "application/pgp-signature") == 0)
 661                                 textview_show_signature_part(mimeview->textview,
 662                                                              partinfo);
 663                         else
 664 #endif
 665                                 textview_show_mime_part(mimeview->textview, partinfo);
 666                         break;
 667                 }
 668         }
 669 }
 670
 671 static void mimeview_start_drag(GtkWidget *widget, gint button,
 672                                 GdkEvent *event, MimeView *mimeview)
 673 {
 674         GtkTargetList *list;
 675         GdkDragContext *context;
 676         MimeInfo *partinfo;
 677
 678         g_return_if_fail(mimeview != NULL);
 679
 680         partinfo = mimeview_get_selected_part(mimeview);
 681         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 682
 683         list = gtk_target_list_new(mimeview_mime_types, 1);
 684         context = gtk_drag_begin(widget, list,
 685                                  GDK_ACTION_COPY, button, event);
 686         gtk_drag_set_icon_default(context);
 687 }
 688
 689 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 690                                     MimeView *mimeview)
 691 {
 692         GtkCList *clist = GTK_CLIST(widget);
 693         MimeInfo *partinfo;
 694         gint row, column;
 695
 696         if (!event) return FALSE;
 697
 698         if (event->button == 2 || event->button == 3) {
 699                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 700                                                   &row, &column))
 701                         return FALSE;
 702                 gtk_clist_unselect_all(clist);
 703                 gtk_clist_select_row(clist, row, column);
 704                 gtkut_clist_set_focus_row(clist, row);
 705         }
 706
 707         if (event->button == 2 ||
 708             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 709                 /* call external program for image, audio or html */
 710                 mimeview_launch(mimeview);
 711         } else if (event->button == 3) {
 712                 partinfo = mimeview_get_selected_part(mimeview);
 713                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 714                                  partinfo->mime_type == MIME_TEXT_HTML ||
 715                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 716                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 717                                  partinfo->mime_type == MIME_IMAGE ||
 718                                  partinfo->mime_type == MIME_MULTIPART))
 719                         menu_set_sensitive(mimeview->popupfactory,
 720                                            "/Display as text", FALSE);
 721                 else
 722                         menu_set_sensitive(mimeview->popupfactory,
 723                                            "/Display as text", TRUE);
 724                 if (partinfo &&
 725                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 726                         menu_set_sensitive(mimeview->popupfactory,
 727                                            "/Open", FALSE);
 728                 else
 729                         menu_set_sensitive(mimeview->popupfactory,
 730                                            "/Open", TRUE);
 731
 732 #if USE_GPGME
 733                 menu_set_sensitive(mimeview->popupfactory,
 734                                    "/Check signature",
 735                                    mimeview_is_signed(mimeview));
 736 #endif
 737
 738                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 739                                NULL, NULL, NULL, NULL,
 740                                event->button, event->time);
 741         }
 742
 743         return TRUE;
 744 }
 745
 746 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 747 {
 748         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 749 }
 750
 751 #define BREAK_ON_MODIFIER_KEY() \
 752         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 753
 754 #define KEY_PRESS_EVENT_STOP() \
 755         if (gtk_signal_n_emissions_by_name \
 756                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 757                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 758                                              "key_press_event"); \
 759         }
 760
 761 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 762                                  MimeView *mimeview)
 763 {
 764         SummaryView *summaryview;
 765         GtkCTree *ctree = GTK_CTREE(widget);
 766         GtkCTreeNode *node;
 767
 768         if (!event) return FALSE;
 769         if (!mimeview->opened) return FALSE;
 770
 771         switch (event->keyval) {
 772         case GDK_space:
 773                 if (textview_scroll_page(mimeview->textview, FALSE))
 774                         return TRUE;
 775
 776                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 777                 if (node) {
 778                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 779                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 780                         return TRUE;
 781                 }
 782                 break;
 783         case GDK_BackSpace:
 784                 textview_scroll_page(mimeview->textview, TRUE);
 785                 return TRUE;
 786         case GDK_Return:
 787                 textview_scroll_one_line(mimeview->textview,
 788                                          (event->state & GDK_MOD1_MASK) != 0);
 789                 return TRUE;
 790         case GDK_n:
 791         case GDK_N:
 792                 BREAK_ON_MODIFIER_KEY();
 793                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 794                 KEY_PRESS_EVENT_STOP();
 795
 796                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 797                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 798                 return TRUE;
 799         case GDK_p:
 800         case GDK_P:
 801                 BREAK_ON_MODIFIER_KEY();
 802                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 803                 KEY_PRESS_EVENT_STOP();
 804
 805                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 806                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 807                 return TRUE;
 808         case GDK_y:
 809                 BREAK_ON_MODIFIER_KEY();
 810                 KEY_PRESS_EVENT_STOP();
 811                 mimeview_save_as(mimeview);
 812                 return TRUE;
 813         case GDK_t:
 814                 BREAK_ON_MODIFIER_KEY();
 815                 KEY_PRESS_EVENT_STOP();
 816                 mimeview_display_as_text(mimeview);
 817                 return TRUE;
 818         case GDK_l:
 819                 BREAK_ON_MODIFIER_KEY();
 820                 KEY_PRESS_EVENT_STOP();
 821                 mimeview_launch(mimeview);
 822                 return TRUE;
 823         default:
 824                 break;
 825         }
 826
 827         if (!mimeview->messageview->mainwin) return FALSE;
 828         summaryview = mimeview->messageview->mainwin->summaryview;
 829         summary_pass_key_press_event(summaryview, event);
 830         return TRUE;
 831 }
 832
 833 static void mimeview_drag_data_get(GtkWidget        *widget,
 834                                    GdkDragContext   *drag_context,
 835                                    GtkSelectionData *selection_data,
 836                                    guint             info,
 837                                    guint             time,
 838                                    MimeView         *mimeview)
 839 {
 840         gchar *filename, *uriname;
 841         MimeInfo *partinfo;
 842
 843         if (!mimeview->opened) return;
 844         if (!mimeview->file) return;
 845
 846         partinfo = mimeview_get_selected_part(mimeview);
 847         if (!partinfo) return;
 848         if (!partinfo->filename && !partinfo->name) return;
 849
 850         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 851         filename = g_basename(filename);
 852         if (*filename == '\0') return;
 853
 854         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 855                                filename, NULL);
 856
 857         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 858                 alertpanel_error
 859                         (_("Can't save the part of multipart message."));
 860
 861         uriname = g_strconcat("file:/", filename, NULL);
 862         gtk_selection_data_set(selection_data, selection_data->target, 8,
 863                                uriname, strlen(uriname));
 864
 865         g_free(uriname);
 866         g_free(filename);
 867 }
 868
 869 static void mimeview_save_all(MimeView *mimeview)
 870 {
 871         gchar *dirname;
 872         gchar *defname = NULL;
 873         MimeInfo *partinfo;
 874         MimeInfo *attachment;
 875         gchar buf[1024];
 876
 877         if (!mimeview->opened) return;
 878         if (!mimeview->file) return;
 879
 880         partinfo = mimeview_get_selected_part(mimeview);
 881         g_return_if_fail(partinfo != NULL);
 882
 883         dirname = filesel_select_file(_("Save as"), defname);
 884         if (!dirname) return;
 885
 886         /* return to first children */
 887         if (!partinfo->parent->children) return;  /* multipart container? */
 888         attachment = partinfo->parent->children->next;
 889         /* for each attachment, extract it in the selected dir. */
 890         while (attachment != NULL) {
 891                 static guint subst_cnt = 1;
 892                 gchar *attachdir;
 893                 gchar *attachname = g_strdup(get_part_name(attachment));
 894                 AlertValue aval = G_ALERTDEFAULT;
 895                 gchar *res;
 896
 897                 if (!attachname || !strlen(attachname))
 898                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 899                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 900                 g_snprintf(buf, sizeof(buf), "%s%s",
 901                            dirname,
 902                            (attachname[0] == G_DIR_SEPARATOR)
 903                            ? &attachname[1]
 904                            : attachname);
 905                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 906                 attachdir = g_dirname(buf);
 907                 make_dir_hier(attachdir);
 908                 g_free(attachdir);
 909
 910                 if (is_file_exist(buf)) {
 911                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 912                                               attachname);
 913                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 914                                           _("Cancel"), NULL);
 915                         g_free(res);
 916                 }
 917                 g_free(attachname);
 918
 919                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 920                         alertpanel_error(_("Can't save the part of multipart message."));
 921                 attachment = attachment->next;
 922         }
 923 }
 924
 925 static void mimeview_display_as_text(MimeView *mimeview)
 926 {
 927         MimeInfo *partinfo;
 928
 929         if (!mimeview->opened) return;
 930
 931         partinfo = mimeview_get_selected_part(mimeview);
 932         g_return_if_fail(partinfo != NULL);
 933         mimeview_show_message_part(mimeview, partinfo);
 934 }
 935
 936 static void mimeview_save_as(MimeView *mimeview)
 937 {
 938         gchar *filename;
 939         gchar *defname = NULL;
 940         MimeInfo *partinfo;
 941         gchar *res;
 942
 943         if (!mimeview->opened) return;
 944         if (!mimeview->file) return;
 945
 946         partinfo = mimeview_get_selected_part(mimeview);
 947         g_return_if_fail(partinfo != NULL);
 948
 949         if (partinfo->filename)
 950                 defname = partinfo->filename;
 951         else if (partinfo->name) {
 952                 Xstrdup_a(defname, partinfo->name, return);
 953                 subst_for_filename(defname);
 954         }
 955
 956         filename = filesel_select_file(_("Save as"), defname);
 957         if (!filename) return;
 958         if (is_file_exist(filename)) {
 959                 AlertValue aval;
 960                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 961                                       filename);
 962                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 963                                   _("Cancel"), NULL);
 964                 g_free(res);
 965                 if (G_ALERTDEFAULT != aval) return;
 966         }
 967
 968         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 969                 alertpanel_error
 970                         (_("Can't save the part of multipart message."));
 971 }
 972
 973 static void mimeview_launch(MimeView *mimeview)
 974 {
 975         MimeInfo *partinfo;
 976         gchar *filename;
 977
 978         if (!mimeview->opened) return;
 979         if (!mimeview->file) return;
 980
 981         partinfo = mimeview_get_selected_part(mimeview);
 982         g_return_if_fail(partinfo != NULL);
 983
 984         filename = procmime_get_tmp_file_name(partinfo);
 985
 986         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 987                 alertpanel_error
 988                         (_("Can't save the part of multipart message."));
 989         else
 990                 mimeview_view_file(filename, partinfo, NULL);
 991
 992         g_free(filename);
 993 }
 994
 995 static void mimeview_open_with(MimeView *mimeview)
 996 {
 997         MimeInfo *partinfo;
 998         gchar *filename;
 999         gchar *cmd;
1000
1001         if (!mimeview->opened) return;
1002         if (!mimeview->file) return;
1003
1004         partinfo = mimeview_get_selected_part(mimeview);
1005         g_return_if_fail(partinfo != NULL);
1006
1007         filename = procmime_get_tmp_file_name(partinfo);
1008
1009         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
1010                 alertpanel_error
1011                         (_("Can't save the part of multipart message."));
1012                 g_free(filename);
1013                 return;
1014         }
1015
1016         if (!prefs_common.mime_open_cmd_history)
1017                 prefs_common.mime_open_cmd_history =
1018                         add_history(NULL, prefs_common.mime_open_cmd);
1019
1020         cmd = input_dialog_combo
1021                 (_("Open with"),
1022                  _("Enter the command line to open file:\n"
1023                    "(`%s' will be replaced with file name)"),
1024                  prefs_common.mime_open_cmd,
1025                  prefs_common.mime_open_cmd_history,
1026                  TRUE);
1027         if (cmd) {
1028                 mimeview_view_file(filename, partinfo, cmd);
1029                 g_free(prefs_common.mime_open_cmd);
1030                 prefs_common.mime_open_cmd = cmd;
1031                 prefs_common.mime_open_cmd_history =
1032                         add_history(prefs_common.mime_open_cmd_history, cmd);
1033         }
1034
1035         g_free(filename);
1036 }
1037
1038 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1039                                const gchar *cmdline)
1040 {
1041         static gchar *default_image_cmdline = "display '%s'";
1042         static gchar *default_audio_cmdline = "play '%s'";
1043         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1044         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1045         gchar buf[1024];
1046         gchar m_buf[1024];
1047         const gchar *cmd;
1048         const gchar *def_cmd;
1049         const gchar *p;
1050
1051         if (cmdline) {
1052                 cmd = cmdline;
1053                 def_cmd = NULL;
1054         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1055                 return;
1056         } else if (MIME_IMAGE == partinfo->mime_type) {
1057                 cmd = prefs_common.mime_image_viewer;
1058                 def_cmd = default_image_cmdline;
1059         } else if (MIME_AUDIO == partinfo->mime_type) {
1060                 cmd = prefs_common.mime_audio_player;
1061                 def_cmd = default_audio_cmdline;
1062         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1063                 cmd = prefs_common.uri_cmd;
1064                 def_cmd = default_html_cmdline;
1065         } else {
1066                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1067                            partinfo->content_type, "%s");
1068                 cmd = m_buf;
1069                 def_cmd = NULL;
1070         }
1071
1072         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1073             !strchr(p + 2, '%'))
1074                 g_snprintf(buf, sizeof(buf), cmd, filename);
1075         else {
1076                 if (cmd)
1077                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1078                 if (def_cmd)
1079                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1080                 else
1081                         return;
1082         }
1083
1084         execute_command_line(buf, TRUE);
1085 }
1086
1087 #if USE_GPGME
1088 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1089                              gpointer data)
1090 {
1091         MimeInfo *partinfo;
1092         gchar *part_name;
1093
1094         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1095         g_return_if_fail(partinfo != NULL);
1096
1097         part_name = get_part_name(partinfo);
1098         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1099 }
1100
1101 static void mimeview_update_names(MimeView *mimeview)
1102 {
1103         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1104
1105         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1106 }
1107
1108 static void mimeview_update_signature_info(MimeView *mimeview)
1109 {
1110         MimeInfo *partinfo;
1111
1112         if (!mimeview) return;
1113         if (!mimeview->opened) return;
1114
1115         partinfo = mimeview_get_selected_part(mimeview);
1116         if (!partinfo) return;
1117
1118         if (g_strcasecmp(partinfo->content_type,
1119                          "application/pgp-signature") == 0) {
1120                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1121                 textview_show_signature_part(mimeview->textview, partinfo);
1122         }
1123 }
1124
1125 void mimeview_check_signature(MimeView *mimeview)
1126 {
1127         MimeInfo *mimeinfo;
1128         FILE *fp;
1129
1130         g_return_if_fail (mimeview_is_signed(mimeview));
1131         g_return_if_fail (gpg_started);
1132
1133         mimeinfo = gtk_ctree_node_get_row_data
1134                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1135         g_return_if_fail(mimeinfo != NULL);
1136         g_return_if_fail(mimeview->file != NULL);
1137
1138         while (mimeinfo->parent)
1139                 mimeinfo = mimeinfo->parent;
1140
1141         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1142                 FILE_OP_ERROR(mimeview->file, "fopen");
1143                 return;
1144         }
1145
1146         rfc2015_check_signature(mimeinfo, fp);
1147         fclose(fp);
1148
1149         mimeview_update_names(mimeview);
1150         mimeview_update_signature_info(mimeview);
1151
1152         textview_show_message(mimeview->messageview->textview, mimeinfo,
1153                               mimeview->file);
1154 }
1155 #endif /* USE_GPGME */
1156
1157 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1158 {
1159         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1160 }
1161
1162 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1163 {
1164         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1165 }
1166
1167 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1168 {
1169         GSList *mimeview_list, *viewer_list;
1170
1171         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1172                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1173
1174                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1175                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1176                         mimeview->mimeviewer = NULL;
1177                 }
1178
1179                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1180                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1181
1182                         mimeviewer->destroy_viewer(mimeviewer);
1183                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1184                 }
1185         }
1186
1187         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1188 }