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