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