src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <gtk/gtknotebook.h>
  29 #include <gtk/gtkscrolledwindow.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkvbox.h>
  32 #include <gtk/gtkvpaned.h>
  33 #include <gtk/gtktext.h>
  34 #include <gtk/gtksignal.h>
  35 #include <gtk/gtkmenu.h>
  36 #include <gtk/gtkdnd.h>
  37 #include <gtk/gtkselection.h>
  38 #include <stdio.h>
  39 #include <unistd.h>
  40 #include <fnmatch.h>
  41
  42 #include "intl.h"
  43 #include "main.h"
  44 #include "mimeview.h"
  45 #include "textview.h"
  46 #include "procmime.h"
  47 #include "summaryview.h"
  48 #include "menu.h"
  49 #include "filesel.h"
  50 #include "alertpanel.h"
  51 #include "inputdialog.h"
  52 #include "utils.h"
  53 #include "gtkutils.h"
  54 #include "prefs_common.h"
  55 #include "rfc2015.h"
  56 #include "pgptext.h"
  57
  58 typedef enum
  59 {
  60         COL_MIMETYPE = 0,
  61         COL_SIZE     = 1,
  62         COL_NAME     = 2
  63 } MimeViewColumnPos;
  64
  65 #define N_MIMEVIEW_COLS 3
  66
  67 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  68                                                  MimeInfo       *mimeinfo,
  69                                                  GtkCTreeNode   *parent);
  70 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  71                                                  MimeInfo       *partinfo,
  72                                                  GtkCTreeNode   *parent);
  73 static void mimeview_show_message_part          (MimeView       *mimeview,
  74                                                  MimeInfo       *partinfo);
  75 static void mimeview_change_view_type           (MimeView       *mimeview,
  76                                                  MimeViewType    type);
  77 static void mimeview_clear                      (MimeView       *mimeview);
  78
  79 static void mimeview_selected           (GtkCTree       *ctree,
  80                                          GtkCTreeNode   *node,
  81                                          gint            column,
  82                                          MimeView       *mimeview);
  83 static void mimeview_start_drag         (GtkWidget      *widget,
  84                                          gint            button,
  85                                          GdkEvent       *event,
  86                                          MimeView       *mimeview);
  87 static gint mimeview_button_pressed     (GtkWidget      *widget,
  88                                          GdkEventButton *event,
  89                                          MimeView       *mimeview);
  90 static gint mimeview_key_pressed        (GtkWidget      *widget,
  91                                          GdkEventKey    *event,
  92                                          MimeView       *mimeview);
  93
  94 static void mimeview_drag_data_get      (GtkWidget        *widget,
  95                                          GdkDragContext   *drag_context,
  96                                          GtkSelectionData *selection_data,
  97                                          guint             info,
  98                                          guint             time,
  99                                          MimeView         *mimeview);
 100
 101 static void mimeview_display_as_text    (MimeView       *mimeview);
 102 static void mimeview_save_as            (MimeView       *mimeview);
 103 static void mimeview_save_all           (MimeView       *mimeview);
 104 static void mimeview_launch             (MimeView       *mimeview);
 105 static void mimeview_open_with          (MimeView       *mimeview);
 106 static void mimeview_view_file          (const gchar    *filename,
 107                                          MimeInfo       *partinfo,
 108                                          const gchar    *cmdline);
 109
 110 static GtkItemFactoryEntry mimeview_popup_entries[] =
 111 {
 112         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 113         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 114         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 115         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 116         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 117 #if USE_GPGME
 118         ,
 119         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 120 #endif
 121 };
 122
 123 static GtkTargetEntry mimeview_mime_types[] =
 124 {
 125         {"text/uri-list", 0, 0}
 126 };
 127
 128 GSList *mimeviewer_factories;
 129 GSList *mimeviews;
 130
 131 MimeView *mimeview_create(void)
 132 {
 133         MimeView *mimeview;
 134
 135         GtkWidget *notebook;
 136         GtkWidget *vbox;
 137         GtkWidget *paned;
 138         GtkWidget *scrolledwin;
 139         GtkWidget *ctree;
 140         GtkWidget *mime_vbox;
 141         GtkWidget *popupmenu;
 142         GtkItemFactory *popupfactory;
 143         gchar *titles[N_MIMEVIEW_COLS];
 144         gint n_entries;
 145         gint i;
 146
 147         debug_print("Creating MIME view...\n");
 148         mimeview = g_new0(MimeView, 1);
 149
 150         titles[COL_MIMETYPE] = _("MIME Type");
 151         titles[COL_SIZE]     = _("Size");
 152         titles[COL_NAME]     = _("Name");
 153
 154         notebook = gtk_notebook_new();
 155         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 156
 157         vbox = gtk_vbox_new(FALSE, 0);
 158         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 159         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 160                                         _("Text"));
 161
 162         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 163         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 164                                        GTK_POLICY_AUTOMATIC,
 165                                        GTK_POLICY_ALWAYS);
 166         gtk_widget_set_usize(scrolledwin, -1, 80);
 167
 168         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 169         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 170         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 171         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 172                                            GTK_JUSTIFY_RIGHT);
 173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 174         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 175         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 176                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 177                                        GTK_CAN_FOCUS);
 178         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 179
 180         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 181                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 182         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 183                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 184         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 185                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 186         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 187                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 188         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 189                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 190
 191         mime_vbox = gtk_vbox_new(FALSE, 0);
 192
 193         paned = gtk_vpaned_new();
 194         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 195         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 196         gtk_container_add(GTK_CONTAINER(notebook), paned);
 197         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 198                                         _("Attachments"));
 199
 200         gtk_widget_show_all(notebook);
 201
 202         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 203
 204         n_entries = sizeof(mimeview_popup_entries) /
 205                 sizeof(mimeview_popup_entries[0]);
 206         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 207                                       "<MimeView>", &popupfactory, mimeview);
 208
 209         mimeview->notebook     = notebook;
 210         mimeview->vbox         = vbox;
 211         mimeview->paned        = paned;
 212         mimeview->scrolledwin  = scrolledwin;
 213         mimeview->ctree        = ctree;
 214         mimeview->mime_vbox    = mime_vbox;
 215         mimeview->popupmenu    = popupmenu;
 216         mimeview->popupfactory = popupfactory;
 217         mimeview->type         = -1;
 218
 219         mimeviews = g_slist_prepend(mimeviews, mimeview);
 220
 221         return mimeview;
 222 }
 223
 224 void mimeview_init(MimeView *mimeview)
 225 {
 226 }
 227
 228 /*
 229  * Check whether the message is OpenPGP signed
 230  */
 231 #if USE_GPGME
 232 static gboolean mimeview_is_signed(MimeView *mimeview)
 233 {
 234         MimeInfo *partinfo = NULL;
 235
 236         debug_print("mimeview_is signed of %p\n", mimeview);
 237
 238         if (!mimeview) return FALSE;
 239         if (!mimeview->opened) return FALSE;
 240
 241         debug_print("mimeview_is_signed: open\n" );
 242
 243         if (!mimeview->file) return FALSE;
 244
 245         debug_print("mimeview_is_signed: file\n" );
 246
 247         partinfo = gtk_ctree_node_get_row_data
 248                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 249         g_return_val_if_fail(partinfo != NULL, FALSE);
 250
 251         /* walk the tree and see whether there is a signature somewhere */
 252         do {
 253                 if (rfc2015_has_signature(partinfo))
 254                         return TRUE;
 255         } while ((partinfo = partinfo->parent) != NULL);
 256
 257         debug_print("mimeview_is_signed: FALSE\n" );
 258
 259         return FALSE;
 260 }
 261
 262 static void set_unchecked_signature(MimeInfo *mimeinfo)
 263 {
 264         MimeInfo *sig_partinfo;
 265
 266         sig_partinfo = rfc2015_find_signature(mimeinfo);
 267         if (sig_partinfo == NULL) return;
 268
 269         g_free(sig_partinfo->sigstatus);
 270         sig_partinfo->sigstatus =
 271                 g_strdup(_("Select \"Check signature\" to check"));
 272
 273         g_free(sig_partinfo->sigstatus_full);
 274         sig_partinfo->sigstatus_full = NULL;
 275 }
 276 #endif /* USE_GPGME */
 277
 278 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 279                            const gchar *file)
 280 {
 281         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 282         GtkCTreeNode *node;
 283         gchar buf[BUFFSIZE];
 284         FILE *fp;
 285
 286         mimeview_clear(mimeview);
 287         textview_clear(mimeview->messageview->textview);
 288
 289         g_return_if_fail(file != NULL);
 290         g_return_if_fail(mimeinfo != NULL);
 291
 292         mimeview->mimeinfo = mimeinfo;
 293
 294         if ((fp = fopen(file, "rb")) == NULL) {
 295                 FILE_OP_ERROR(file, "fopen");
 296                 return;
 297         }
 298         mimeview->file = g_strdup(file);
 299
 300         /* skip MIME part headers */
 301         if (mimeinfo->mime_type == MIME_MULTIPART) {
 302                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 303                         perror("fseek");
 304                 while (fgets(buf, sizeof(buf), fp) != NULL)
 305                         if (buf[0] == '\r' || buf[0] == '\n') break;
 306         }
 307
 308         procmime_scan_multipart_message(mimeinfo, fp);
 309 #if USE_GPGME
 310         if ((prefs_common.auto_check_signatures)
 311             && (gpg_started))
 312                 rfc2015_check_signature(mimeinfo, fp);
 313         else
 314                 set_unchecked_signature(mimeinfo);
 315 #endif
 316
 317         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 318                                          mimeview);
 319
 320         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 321
 322         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 323                                            mimeview_selected, mimeview);
 324
 325         /* search first text part */
 326         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 327              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 328                 MimeInfo *partinfo;
 329
 330                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 331                 if (partinfo &&
 332                     (partinfo->mime_type == MIME_TEXT ||
 333                      partinfo->mime_type == MIME_TEXT_HTML))
 334                         break;
 335         }
 336         fclose(fp);
 337         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 338
 339         if (!node)
 340                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 341
 342         if (node) {
 343                 gtk_ctree_select(ctree, node);
 344                 gtkut_ctree_set_focus_row(ctree, node);
 345                 gtk_widget_grab_focus(mimeview->ctree);
 346         }
 347 }
 348
 349 void mimeview_destroy(MimeView *mimeview)
 350 {
 351         GSList *cur;
 352
 353         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 354                 MimeViewer *viewer = (MimeViewer *) cur->data;
 355                 viewer->destroy_viewer(viewer);
 356         }
 357         g_slist_free(mimeview->viewers);
 358
 359         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 360         g_free(mimeview->file);
 361         g_free(mimeview);
 362
 363         mimeviews = g_slist_remove(mimeviews, mimeview);
 364 }
 365
 366 static void mimeview_set_multipart_tree(MimeView *mimeview,
 367                                         MimeInfo *mimeinfo,
 368                                         GtkCTreeNode *parent)
 369 {
 370         GtkCTreeNode *current = parent;
 371
 372         g_return_if_fail(mimeinfo != NULL);
 373
 374         if (!mimeinfo->sub && mimeinfo->parent)
 375                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 376         if (mimeinfo->sub && !mimeinfo->sub->children &&
 377             mimeinfo->sub->mime_type != MIME_TEXT &&
 378             mimeinfo->sub->mime_type != MIME_TEXT_HTML) {
 379                 mimeview_append_part(mimeview, mimeinfo->sub, parent);
 380                 return;
 381         }
 382
 383         if (mimeinfo->sub)
 384                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 385
 386         if (mimeinfo->children)
 387                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 388
 389         if (mimeinfo->next)
 390                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 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         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 489                 MimeViewerFactory *curfactory = cur->data;
 490
 491                 if(!fnmatch(curfactory->content_type, content_type, 0)) {
 492                         factory = curfactory;
 493                         break;
 494                 }
 495         }
 496         if (factory == NULL)
 497                 return NULL;
 498
 499         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 500                 MimeViewer *curviewer = cur->data;
 501
 502                 if (curviewer->factory == factory)
 503                         return curviewer;
 504         }
 505         viewer = factory->create_viewer();
 506         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 507
 508         return viewer;
 509 }
 510
 511 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 512 {
 513         gchar *content_type = NULL;
 514         MimeViewer *viewer = NULL;
 515
 516         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 517             (partinfo->name != NULL)) {
 518                 content_type = procmime_get_mime_type(partinfo->name);
 519         } else {
 520                 content_type = g_strdup(partinfo->content_type);
 521         }
 522
 523         if (content_type != NULL) {
 524                 viewer = get_viewer_for_content_type(mimeview, content_type);
 525                 g_free(content_type);
 526         }
 527
 528         return viewer;
 529 }
 530
 531 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 532 {
 533         MimeViewer *viewer;
 534
 535         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 536         if (viewer == NULL) {
 537                 if (mimeview->mimeviewer != NULL)
 538                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 539                 mimeview->mimeviewer = NULL;
 540                 return FALSE;
 541         }
 542
 543         if (mimeview->mimeviewer != viewer) {
 544                 if (mimeview->mimeviewer != NULL)
 545                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 546                 mimeview->mimeviewer = viewer;
 547                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 548         }
 549         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 550
 551         return TRUE;
 552 }
 553
 554 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 555 {
 556         TextView  *textview  = mimeview->textview;
 557         GList *children;
 558
 559         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 560             (mimeview->type == type)) return;
 561
 562         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 563         if (children) {
 564                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 565                                        GTK_WIDGET(children->data));
 566                 g_list_free(children);
 567         }
 568
 569         switch (type) {
 570         case MIMEVIEW_TEXT:
 571                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 572                                   GTK_WIDGET_PTR(textview));
 573                 break;
 574         case MIMEVIEW_VIEWER:
 575                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 576                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
 577                 break;
 578         default:
 579                 return;
 580         }
 581
 582         mimeview->type = type;
 583 }
 584
 585 static void mimeview_clear(MimeView *mimeview)
 586 {
 587         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 588
 589         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 590         mimeview->mimeinfo = NULL;
 591
 592         gtk_clist_clear(clist);
 593         textview_clear(mimeview->textview);
 594         if (mimeview->mimeviewer != NULL)
 595                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 596
 597         mimeview->opened = NULL;
 598
 599         g_free(mimeview->file);
 600         mimeview->file = NULL;
 601
 602         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 603 }
 604
 605 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 606                               MimeView *mimeview)
 607 {
 608         MimeInfo *partinfo;
 609
 610         if (mimeview->opened == node) return;
 611         mimeview->opened = node;
 612         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 613
 614         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 615         if (!partinfo) return;
 616
 617         /* ungrab the mouse event */
 618         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 619                 gtk_grab_remove(GTK_WIDGET(ctree));
 620                 if (gdk_pointer_is_grabbed())
 621                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 622         }
 623
 624         mimeview->textview->default_text = FALSE;
 625
 626         if (!mimeview_show_part(mimeview, partinfo)) {
 627                 switch (partinfo->mime_type) {
 628                 case MIME_TEXT:
 629                 case MIME_TEXT_HTML:
 630                 case MIME_TEXT_ENRICHED:
 631                 case MIME_MESSAGE_RFC822:
 632                 case MIME_MULTIPART:
 633                         mimeview_show_message_part(mimeview, partinfo);
 634
 635                         break;
 636                 default:
 637                         mimeview->textview->default_text = TRUE;
 638                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 639 #if USE_GPGME
 640                         if (g_strcasecmp(partinfo->content_type,
 641                                          "application/pgp-signature") == 0)
 642                                 textview_show_signature_part(mimeview->textview,
 643                                                              partinfo);
 644                         else
 645 #endif
 646                                 textview_show_mime_part(mimeview->textview, partinfo);
 647                         break;
 648                 }
 649         }
 650 }
 651
 652 static void mimeview_start_drag(GtkWidget *widget, gint button,
 653                                 GdkEvent *event, MimeView *mimeview)
 654 {
 655         GtkTargetList *list;
 656         GdkDragContext *context;
 657         MimeInfo *partinfo;
 658         GtkCTree *ctree;
 659
 660         g_return_if_fail(mimeview != NULL);
 661         ctree = GTK_CTREE(mimeview->ctree);
 662         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 663         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 664
 665         list = gtk_target_list_new(mimeview_mime_types, 1);
 666         context = gtk_drag_begin(widget, list,
 667                                  GDK_ACTION_COPY, button, event);
 668         gtk_drag_set_icon_default(context);
 669 }
 670
 671 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 672                                     MimeView *mimeview)
 673 {
 674         GtkCList *clist = GTK_CLIST(widget);
 675         MimeInfo *partinfo;
 676         gint row, column;
 677
 678         if (!event) return FALSE;
 679
 680         if (event->button == 2 || event->button == 3) {
 681                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 682                                                   &row, &column))
 683                         return FALSE;
 684                 gtk_clist_unselect_all(clist);
 685                 gtk_clist_select_row(clist, row, column);
 686                 gtkut_clist_set_focus_row(clist, row);
 687         }
 688
 689         if (event->button == 2 ||
 690             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 691                 /* call external program for image, audio or html */
 692                 mimeview_launch(mimeview);
 693         } else if (event->button == 3) {
 694                 partinfo = gtk_ctree_node_get_row_data
 695                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 696                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 697                                  partinfo->mime_type == MIME_TEXT_HTML ||
 698                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 699                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 700                                  partinfo->mime_type == MIME_IMAGE ||
 701                                  partinfo->mime_type == MIME_MULTIPART))
 702                         menu_set_sensitive(mimeview->popupfactory,
 703                                            "/Display as text", FALSE);
 704                 else
 705                         menu_set_sensitive(mimeview->popupfactory,
 706                                            "/Display as text", TRUE);
 707                 if (partinfo &&
 708                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 709                         menu_set_sensitive(mimeview->popupfactory,
 710                                            "/Open", FALSE);
 711                 else
 712                         menu_set_sensitive(mimeview->popupfactory,
 713                                            "/Open", TRUE);
 714
 715 #if USE_GPGME
 716                 menu_set_sensitive(mimeview->popupfactory,
 717                                    "/Check signature",
 718                                    mimeview_is_signed(mimeview));
 719 #endif
 720
 721                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 722                                NULL, NULL, NULL, NULL,
 723                                event->button, event->time);
 724         }
 725
 726         return TRUE;
 727 }
 728
 729 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 730 {
 731         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 732 }
 733
 734 #define BREAK_ON_MODIFIER_KEY() \
 735         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 736
 737 #define KEY_PRESS_EVENT_STOP() \
 738         if (gtk_signal_n_emissions_by_name \
 739                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 740                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 741                                              "key_press_event"); \
 742         }
 743
 744 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 745                                  MimeView *mimeview)
 746 {
 747         SummaryView *summaryview;
 748         GtkCTree *ctree = GTK_CTREE(widget);
 749         GtkCTreeNode *node;
 750
 751         if (!event) return FALSE;
 752         if (!mimeview->opened) return FALSE;
 753
 754         switch (event->keyval) {
 755         case GDK_space:
 756                 if (textview_scroll_page(mimeview->textview, FALSE))
 757                         return TRUE;
 758
 759                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 760                 if (node) {
 761                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 762                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 763                         return TRUE;
 764                 }
 765                 break;
 766         case GDK_BackSpace:
 767                 textview_scroll_page(mimeview->textview, TRUE);
 768                 return TRUE;
 769         case GDK_Return:
 770                 textview_scroll_one_line(mimeview->textview,
 771                                          (event->state & GDK_MOD1_MASK) != 0);
 772                 return TRUE;
 773         case GDK_n:
 774         case GDK_N:
 775                 BREAK_ON_MODIFIER_KEY();
 776                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 777                 KEY_PRESS_EVENT_STOP();
 778
 779                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 780                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 781                 return TRUE;
 782         case GDK_p:
 783         case GDK_P:
 784                 BREAK_ON_MODIFIER_KEY();
 785                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 786                 KEY_PRESS_EVENT_STOP();
 787
 788                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 789                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 790                 return TRUE;
 791         case GDK_y:
 792                 BREAK_ON_MODIFIER_KEY();
 793                 KEY_PRESS_EVENT_STOP();
 794                 mimeview_save_as(mimeview);
 795                 return TRUE;
 796         case GDK_t:
 797                 BREAK_ON_MODIFIER_KEY();
 798                 KEY_PRESS_EVENT_STOP();
 799                 mimeview_display_as_text(mimeview);
 800                 return TRUE;
 801         case GDK_l:
 802                 BREAK_ON_MODIFIER_KEY();
 803                 KEY_PRESS_EVENT_STOP();
 804                 mimeview_launch(mimeview);
 805                 return TRUE;
 806         default:
 807                 break;
 808         }
 809
 810         if (!mimeview->messageview->mainwin) return FALSE;
 811         summaryview = mimeview->messageview->mainwin->summaryview;
 812         summary_pass_key_press_event(summaryview, event);
 813         return TRUE;
 814 }
 815
 816 static void mimeview_drag_data_get(GtkWidget        *widget,
 817                                    GdkDragContext   *drag_context,
 818                                    GtkSelectionData *selection_data,
 819                                    guint             info,
 820                                    guint             time,
 821                                    MimeView         *mimeview)
 822 {
 823         gchar *filename, *uriname;
 824         MimeInfo *partinfo;
 825
 826         if (!mimeview->opened) return;
 827         if (!mimeview->file) return;
 828
 829         partinfo = gtk_ctree_node_get_row_data
 830                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 831         if (!partinfo) return;
 832         if (!partinfo->filename && !partinfo->name) return;
 833
 834         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 835         filename = g_basename(filename);
 836         if (*filename == '\0') return;
 837
 838         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 839                                filename, NULL);
 840
 841         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 842                 alertpanel_error
 843                         (_("Can't save the part of multipart message."));
 844
 845         uriname = g_strconcat("file:/", filename, NULL);
 846         gtk_selection_data_set(selection_data, selection_data->target, 8,
 847                                uriname, strlen(uriname));
 848
 849         g_free(uriname);
 850         g_free(filename);
 851 }
 852
 853 static void mimeview_save_all(MimeView *mimeview)
 854 {
 855         gchar *dirname;
 856         gchar *defname = NULL;
 857         MimeInfo *partinfo;
 858         MimeInfo *attachment;
 859         gchar buf[1024];
 860
 861         if (!mimeview->opened) return;
 862         if (!mimeview->file) return;
 863
 864         partinfo = gtk_ctree_node_get_row_data
 865                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 866         g_return_if_fail(partinfo != NULL);
 867
 868         dirname = filesel_select_file(_("Save as"), defname);
 869         if (!dirname) return;
 870
 871         /* return to first children */
 872         if (!partinfo->parent->children) return;  /* multipart container? */
 873         attachment = partinfo->parent->children->next;
 874         /* for each attachment, extract it in the selected dir. */
 875         while (attachment != NULL) {
 876                 static guint subst_cnt = 1;
 877                 gchar *attachdir;
 878                 gchar *attachname = g_strdup(get_part_name(attachment));
 879                 AlertValue aval = G_ALERTDEFAULT;
 880                 gchar *res;
 881
 882                 if (!attachname || !strlen(attachname))
 883                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 884                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 885                 g_snprintf(buf, sizeof(buf), "%s%s",
 886                            dirname,
 887                            (attachname[0] == G_DIR_SEPARATOR)
 888                            ? &attachname[1]
 889                            : attachname);
 890                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 891                 attachdir = g_dirname(buf);
 892                 make_dir_hier(attachdir);
 893                 g_free(attachdir);
 894
 895                 if (is_file_exist(buf)) {
 896                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 897                                               attachname);
 898                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 899                                           _("Cancel"), NULL);
 900                         g_free(res);
 901                 }
 902                 g_free(attachname);
 903
 904                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 905                         alertpanel_error(_("Can't save the part of multipart message."));
 906                 attachment = attachment->next;
 907         }
 908 }
 909
 910 static void mimeview_display_as_text(MimeView *mimeview)
 911 {
 912         MimeInfo *partinfo;
 913
 914         if (!mimeview->opened) return;
 915
 916         partinfo = gtk_ctree_node_get_row_data
 917                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 918         mimeview_show_message_part(mimeview, partinfo);
 919 }
 920
 921 static void mimeview_save_as(MimeView *mimeview)
 922 {
 923         gchar *filename;
 924         gchar *defname = NULL;
 925         MimeInfo *partinfo;
 926         gchar *res;
 927
 928         if (!mimeview->opened) return;
 929         if (!mimeview->file) return;
 930
 931         partinfo = gtk_ctree_node_get_row_data
 932                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 933         g_return_if_fail(partinfo != NULL);
 934
 935         if (partinfo->filename)
 936                 defname = partinfo->filename;
 937         else if (partinfo->name) {
 938                 Xstrdup_a(defname, partinfo->name, return);
 939                 subst_for_filename(defname);
 940         }
 941
 942         filename = filesel_select_file(_("Save as"), defname);
 943         if (!filename) return;
 944         if (is_file_exist(filename)) {
 945                 AlertValue aval;
 946                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 947                                       filename);
 948                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 949                                   _("Cancel"), NULL);
 950                 g_free(res);
 951                 if (G_ALERTDEFAULT != aval) return;
 952         }
 953
 954         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 955                 alertpanel_error
 956                         (_("Can't save the part of multipart message."));
 957 }
 958
 959 static void mimeview_launch(MimeView *mimeview)
 960 {
 961         MimeInfo *partinfo;
 962         gchar *filename;
 963
 964         if (!mimeview->opened) return;
 965         if (!mimeview->file) return;
 966
 967         partinfo = gtk_ctree_node_get_row_data
 968                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 969         g_return_if_fail(partinfo != NULL);
 970
 971         filename = procmime_get_tmp_file_name(partinfo);
 972
 973         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 974                 alertpanel_error
 975                         (_("Can't save the part of multipart message."));
 976         else
 977                 mimeview_view_file(filename, partinfo, NULL);
 978
 979         g_free(filename);
 980 }
 981
 982 static void mimeview_open_with(MimeView *mimeview)
 983 {
 984         MimeInfo *partinfo;
 985         gchar *filename;
 986         gchar *cmd;
 987
 988         if (!mimeview->opened) return;
 989         if (!mimeview->file) return;
 990
 991         partinfo = gtk_ctree_node_get_row_data
 992                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 993         g_return_if_fail(partinfo != NULL);
 994
 995         filename = procmime_get_tmp_file_name(partinfo);
 996
 997         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 998                 alertpanel_error
 999                         (_("Can't save the part of multipart message."));
1000                 g_free(filename);
1001                 return;
1002         }
1003
1004         if (!prefs_common.mime_open_cmd_history)
1005                 prefs_common.mime_open_cmd_history =
1006                         add_history(NULL, prefs_common.mime_open_cmd);
1007
1008         cmd = input_dialog_combo
1009                 (_("Open with"),
1010                  _("Enter the command line to open file:\n"
1011                    "(`%s' will be replaced with file name)"),
1012                  prefs_common.mime_open_cmd,
1013                  prefs_common.mime_open_cmd_history,
1014                  TRUE);
1015         if (cmd) {
1016                 mimeview_view_file(filename, partinfo, cmd);
1017                 g_free(prefs_common.mime_open_cmd);
1018                 prefs_common.mime_open_cmd = cmd;
1019                 prefs_common.mime_open_cmd_history =
1020                         add_history(prefs_common.mime_open_cmd_history, cmd);
1021         }
1022
1023         g_free(filename);
1024 }
1025
1026 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1027                                const gchar *cmdline)
1028 {
1029         static gchar *default_image_cmdline = "display '%s'";
1030         static gchar *default_audio_cmdline = "play '%s'";
1031         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1032         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1033         gchar buf[1024];
1034         gchar m_buf[1024];
1035         const gchar *cmd;
1036         const gchar *def_cmd;
1037         const gchar *p;
1038
1039         if (cmdline) {
1040                 cmd = cmdline;
1041                 def_cmd = NULL;
1042         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1043                 return;
1044         } else if (MIME_IMAGE == partinfo->mime_type) {
1045                 cmd = prefs_common.mime_image_viewer;
1046                 def_cmd = default_image_cmdline;
1047         } else if (MIME_AUDIO == partinfo->mime_type) {
1048                 cmd = prefs_common.mime_audio_player;
1049                 def_cmd = default_audio_cmdline;
1050         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1051                 cmd = prefs_common.uri_cmd;
1052                 def_cmd = default_html_cmdline;
1053         } else {
1054                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1055                            partinfo->content_type, "%s");
1056                 cmd = m_buf;
1057                 def_cmd = NULL;
1058         }
1059
1060         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1061             !strchr(p + 2, '%'))
1062                 g_snprintf(buf, sizeof(buf), cmd, filename);
1063         else {
1064                 if (cmd)
1065                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1066                 if (def_cmd)
1067                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1068                 else
1069                         return;
1070         }
1071
1072         execute_command_line(buf, TRUE);
1073 }
1074
1075 #if USE_GPGME
1076 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1077                              gpointer data)
1078 {
1079         MimeInfo *partinfo;
1080         gchar *part_name;
1081
1082         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1083         g_return_if_fail(partinfo != NULL);
1084
1085         part_name = get_part_name(partinfo);
1086         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1087 }
1088
1089 static void mimeview_update_names(MimeView *mimeview)
1090 {
1091         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1092
1093         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1094 }
1095
1096 static void mimeview_update_signature_info(MimeView *mimeview)
1097 {
1098         MimeInfo *partinfo;
1099
1100         if (!mimeview) return;
1101         if (!mimeview->opened) return;
1102
1103         partinfo = gtk_ctree_node_get_row_data
1104                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1105         if (!partinfo) return;
1106
1107         if (g_strcasecmp(partinfo->content_type,
1108                          "application/pgp-signature") == 0) {
1109                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1110                 textview_show_signature_part(mimeview->textview, partinfo);
1111         }
1112 }
1113
1114 void mimeview_check_signature(MimeView *mimeview)
1115 {
1116         MimeInfo *mimeinfo;
1117         FILE *fp;
1118
1119         g_return_if_fail (mimeview_is_signed(mimeview));
1120         g_return_if_fail (gpg_started);
1121
1122         mimeinfo = gtk_ctree_node_get_row_data
1123                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1124         g_return_if_fail(mimeinfo != NULL);
1125         g_return_if_fail(mimeview->file != NULL);
1126
1127         while (mimeinfo->parent)
1128                 mimeinfo = mimeinfo->parent;
1129
1130         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1131                 FILE_OP_ERROR(mimeview->file, "fopen");
1132                 return;
1133         }
1134
1135         rfc2015_check_signature(mimeinfo, fp);
1136         fclose(fp);
1137
1138         mimeview_update_names(mimeview);
1139         mimeview_update_signature_info(mimeview);
1140
1141         textview_show_message(mimeview->messageview->textview, mimeinfo,
1142                               mimeview->file);
1143 }
1144 #endif /* USE_GPGME */
1145
1146 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1147 {
1148         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1149 }
1150
1151 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1152 {
1153         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1154 }
1155
1156 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1157 {
1158         GSList *mimeview_list, *viewer_list;
1159
1160         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1161                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1162
1163                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1164                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1165                         mimeview->mimeviewer = NULL;
1166                 }
1167
1168                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1169                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1170
1171                         mimeviewer->destroy_viewer(mimeviewer);
1172                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1173                 }
1174         }
1175
1176         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1177 }