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 if (partinfo->description)
 393                 return partinfo->description;
 394         else
 395                 return "";
 396 }
 397
 398 static gchar *get_part_description(MimeInfo *partinfo)
 399 {
 400         if (partinfo->description)
 401                 return partinfo->description;
 402         else if (partinfo->name)
 403                 return partinfo->name;
 404         else if (partinfo->filename)
 405                 return partinfo->filename;
 406         else
 407                 return "";
 408 }
 409
 410 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 411                                           MimeInfo *partinfo,
 412                                           GtkCTreeNode *parent)
 413 {
 414         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 415         GtkCTreeNode *node;
 416         gchar *str[N_MIMEVIEW_COLS];
 417
 418         str[COL_MIMETYPE] =
 419                 partinfo->content_type ? partinfo->content_type : "";
 420         str[COL_SIZE] = to_human_readable(partinfo->size);
 421         if (prefs_common.attach_desc)
 422                 str[COL_NAME] = get_part_description(partinfo);
 423         else
 424                 str[COL_NAME] = get_part_name(partinfo);
 425
 426         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 427                                      NULL, NULL, NULL, NULL,
 428                                      FALSE, TRUE);
 429         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 430
 431         return node;
 432 }
 433
 434 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 435 {
 436         FILE *fp;
 437         const gchar *fname;
 438 #if USE_GPGME
 439         MimeInfo *pi;
 440 #endif
 441
 442         if (!partinfo) return;
 443
 444 #if USE_GPGME
 445         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 446                 ;
 447         fname = pi ? pi->plaintextfile : mimeview->file;
 448 #else
 449         fname = mimeview->file;
 450 #endif /* USE_GPGME */
 451         if (!fname) return;
 452
 453         if ((fp = fopen(fname, "rb")) == NULL) {
 454                 FILE_OP_ERROR(fname, "fopen");
 455                 return;
 456         }
 457
 458         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 459                 FILE_OP_ERROR(mimeview->file, "fseek");
 460                 fclose(fp);
 461                 return;
 462         }
 463
 464         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 465         textview_show_part(mimeview->textview, partinfo, fp);
 466
 467         fclose(fp);
 468 }
 469
 470 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 471 {
 472         gchar *filename;
 473
 474         if (!partinfo) return;
 475
 476         filename = procmime_get_tmp_file_name(partinfo);
 477
 478         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 479                 alertpanel_error
 480                         (_("Can't get the part of multipart message."));
 481         else {
 482                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 483                 /* Workaround for the GTK+ bug with handling scroll adjustments
 484                  * in GtkViewport */
 485                 imageview_clear(mimeview->imageview);
 486                 imageview_show_image(mimeview->imageview, partinfo, filename,
 487                                      prefs_common.resize_image);
 488                 unlink(filename);
 489         }
 490
 491         g_free(filename);
 492 }
 493
 494 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 495 {
 496         TextView  *textview  = mimeview->textview;
 497         ImageView *imageview = mimeview->imageview;
 498         GList *children;
 499
 500         if (mimeview->type == type) return;
 501
 502         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 503         if (children) {
 504                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 505                                        GTK_WIDGET(children->data));
 506                 g_list_free(children);
 507         }
 508
 509         switch (type) {
 510         case MIMEVIEW_IMAGE:
 511                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 512                                   GTK_WIDGET_PTR(imageview));
 513                 break;
 514         case MIMEVIEW_TEXT:
 515                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 516                                   GTK_WIDGET_PTR(textview));
 517                 break;
 518         default:
 519                 return;
 520         }
 521
 522         mimeview->type = type;
 523 }
 524
 525 static void mimeview_clear(MimeView *mimeview)
 526 {
 527         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 528
 529         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 530         mimeview->mimeinfo = NULL;
 531
 532         gtk_clist_clear(clist);
 533         textview_clear(mimeview->textview);
 534         imageview_clear(mimeview->imageview);
 535
 536         mimeview->opened = NULL;
 537
 538         g_free(mimeview->file);
 539         mimeview->file = NULL;
 540
 541         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 542 }
 543
 544 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 545                               MimeView *mimeview)
 546 {
 547         MimeInfo *partinfo;
 548
 549         if (mimeview->opened == node) return;
 550         mimeview->opened = node;
 551         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 552
 553         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 554         if (!partinfo) return;
 555
 556         /* ungrab the mouse event */
 557         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 558                 gtk_grab_remove(GTK_WIDGET(ctree));
 559                 if (gdk_pointer_is_grabbed())
 560                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 561         }
 562
 563         mimeview->textview->default_text = FALSE;
 564
 565         switch (partinfo->mime_type) {
 566         case MIME_TEXT:
 567         case MIME_TEXT_HTML:
 568         case MIME_TEXT_ENRICHED:
 569         case MIME_MESSAGE_RFC822:
 570         case MIME_MULTIPART:
 571                 mimeview_show_message_part(mimeview, partinfo);
 572
 573                 break;
 574 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 575         case MIME_IMAGE:
 576                 mimeview->textview->default_text = TRUE;
 577                 if (prefs_common.display_img)
 578                         mimeview_show_image_part(mimeview, partinfo);
 579                 else {
 580                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 581                         textview_show_mime_part(mimeview->textview, partinfo);
 582                 }
 583                 break;
 584 #endif
 585         default:
 586                 mimeview->textview->default_text = TRUE;
 587                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 588 #if USE_GPGME
 589                 if (g_strcasecmp(partinfo->content_type,
 590                                  "application/pgp-signature") == 0)
 591                         textview_show_signature_part(mimeview->textview,
 592                                                      partinfo);
 593                 else
 594 #endif
 595                         textview_show_mime_part(mimeview->textview, partinfo);
 596                 break;
 597         }
 598 }
 599
 600 static void mimeview_start_drag(GtkWidget *widget, gint button,
 601                                 GdkEvent *event, MimeView *mimeview)
 602 {
 603         GtkTargetList *list;
 604         GdkDragContext *context;
 605         MimeInfo *partinfo;
 606         GtkCTree *ctree;
 607
 608         g_return_if_fail(mimeview != NULL);
 609         ctree = GTK_CTREE(mimeview->ctree);
 610         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 611         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 612
 613         list = gtk_target_list_new(mimeview_mime_types, 1);
 614         context = gtk_drag_begin(widget, list,
 615                                  GDK_ACTION_COPY, button, event);
 616         gtk_drag_set_icon_default(context);
 617 }
 618
 619 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 620                                     MimeView *mimeview)
 621 {
 622         GtkCList *clist = GTK_CLIST(widget);
 623         MimeInfo *partinfo;
 624         gint row, column;
 625
 626         if (!event) return FALSE;
 627
 628         if (event->button == 2 || event->button == 3) {
 629                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 630                                                   &row, &column))
 631                         return FALSE;
 632                 gtk_clist_unselect_all(clist);
 633                 gtk_clist_select_row(clist, row, column);
 634                 gtkut_clist_set_focus_row(clist, row);
 635         }
 636
 637         if (event->button == 2 ||
 638             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 639                 /* call external program for image, audio or html */
 640                 mimeview_launch(mimeview);
 641         } else if (event->button == 3) {
 642                 partinfo = gtk_ctree_node_get_row_data
 643                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 644                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 645                                  partinfo->mime_type == MIME_TEXT_HTML ||
 646                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 647                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 648                                  partinfo->mime_type == MIME_IMAGE ||
 649                                  partinfo->mime_type == MIME_MULTIPART))
 650                         menu_set_sensitive(mimeview->popupfactory,
 651                                            "/Display as text", FALSE);
 652                 else
 653                         menu_set_sensitive(mimeview->popupfactory,
 654                                            "/Display as text", TRUE);
 655                 if (partinfo &&
 656                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 657                         menu_set_sensitive(mimeview->popupfactory,
 658                                            "/Open", FALSE);
 659                 else
 660                         menu_set_sensitive(mimeview->popupfactory,
 661                                            "/Open", TRUE);
 662
 663 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 664                 if (partinfo && (partinfo->mime_type == MIME_IMAGE))
 665                         menu_set_sensitive(mimeview->popupfactory,
 666                                            "/Display image", TRUE);
 667 #endif
 668 #if USE_GPGME
 669                 menu_set_sensitive(mimeview->popupfactory,
 670                                    "/Check signature",
 671                                    mimeview_is_signed(mimeview));
 672 #endif
 673
 674                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 675                                NULL, NULL, NULL, NULL,
 676                                event->button, event->time);
 677         }
 678
 679         return TRUE;
 680 }
 681
 682 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 683 {
 684         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 685 }
 686
 687 #define BREAK_ON_MODIFIER_KEY() \
 688         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 689
 690 #define KEY_PRESS_EVENT_STOP() \
 691         if (gtk_signal_n_emissions_by_name \
 692                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 693                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 694                                              "key_press_event"); \
 695         }
 696
 697 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 698                                  MimeView *mimeview)
 699 {
 700         SummaryView *summaryview;
 701         GtkCTree *ctree = GTK_CTREE(widget);
 702         GtkCTreeNode *node;
 703
 704         if (!event) return FALSE;
 705         if (!mimeview->opened) return FALSE;
 706
 707         switch (event->keyval) {
 708         case GDK_space:
 709                 if (textview_scroll_page(mimeview->textview, FALSE))
 710                         return TRUE;
 711
 712                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 713                 if (node) {
 714                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 715                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 716                         return TRUE;
 717                 }
 718                 break;
 719         case GDK_BackSpace:
 720                 textview_scroll_page(mimeview->textview, TRUE);
 721                 return TRUE;
 722         case GDK_Return:
 723                 textview_scroll_one_line(mimeview->textview,
 724                                          (event->state & GDK_MOD1_MASK) != 0);
 725                 return TRUE;
 726         case GDK_n:
 727         case GDK_N:
 728                 BREAK_ON_MODIFIER_KEY();
 729                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 730                 KEY_PRESS_EVENT_STOP();
 731
 732                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 733                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 734                 return TRUE;
 735         case GDK_p:
 736         case GDK_P:
 737                 BREAK_ON_MODIFIER_KEY();
 738                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 739                 KEY_PRESS_EVENT_STOP();
 740
 741                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 742                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 743                 return TRUE;
 744         case GDK_y:
 745                 BREAK_ON_MODIFIER_KEY();
 746                 KEY_PRESS_EVENT_STOP();
 747                 mimeview_save_as(mimeview);
 748                 return TRUE;
 749         case GDK_t:
 750                 BREAK_ON_MODIFIER_KEY();
 751                 KEY_PRESS_EVENT_STOP();
 752                 mimeview_display_as_text(mimeview);
 753                 return TRUE;
 754         case GDK_i:
 755                 BREAK_ON_MODIFIER_KEY();
 756                 KEY_PRESS_EVENT_STOP();
 757                 mimeview_show_image(mimeview);
 758                 return TRUE;
 759         case GDK_l:
 760                 BREAK_ON_MODIFIER_KEY();
 761                 KEY_PRESS_EVENT_STOP();
 762                 mimeview_launch(mimeview);
 763                 return TRUE;
 764         default:
 765                 break;
 766         }
 767
 768         if (!mimeview->messageview->mainwin) return FALSE;
 769         summaryview = mimeview->messageview->mainwin->summaryview;
 770         summary_pass_key_press_event(summaryview, event);
 771         return TRUE;
 772 }
 773
 774 static void mimeview_drag_data_get(GtkWidget        *widget,
 775                                    GdkDragContext   *drag_context,
 776                                    GtkSelectionData *selection_data,
 777                                    guint             info,
 778                                    guint             time,
 779                                    MimeView         *mimeview)
 780 {
 781         gchar *filename, *uriname;
 782         MimeInfo *partinfo;
 783
 784         if (!mimeview->opened) return;
 785         if (!mimeview->file) return;
 786
 787         partinfo = gtk_ctree_node_get_row_data
 788                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 789         if (!partinfo) return;
 790         if (!partinfo->filename && !partinfo->name) return;
 791
 792         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 793         filename = g_basename(filename);
 794         if (*filename == '\0') return;
 795
 796         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 797                                filename, NULL);
 798
 799         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 800                 alertpanel_error
 801                         (_("Can't save the part of multipart message."));
 802
 803         uriname = g_strconcat("file:/", filename, NULL);
 804         gtk_selection_data_set(selection_data, selection_data->target, 8,
 805                                uriname, strlen(uriname));
 806
 807         g_free(uriname);
 808         g_free(filename);
 809 }
 810
 811 static void mimeview_save_all(MimeView *mimeview)
 812 {
 813         gchar *dirname;
 814         gchar *defname = NULL;
 815         MimeInfo *partinfo;
 816         MimeInfo *attachment;
 817         gchar buf[1024];
 818
 819         if (!mimeview->opened) return;
 820         if (!mimeview->file) return;
 821
 822         partinfo = gtk_ctree_node_get_row_data
 823                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 824         g_return_if_fail(partinfo != NULL);
 825
 826         dirname = filesel_select_file(_("Save as"), defname);
 827         if (!dirname) return;
 828
 829         /* return to first children */
 830         if (!partinfo->parent->children) return;  /* multipart container? */
 831         attachment = partinfo->parent->children->next;
 832         /* for each attachment, extract it in the selected dir. */
 833         while (attachment != NULL) {
 834                 static guint subst_cnt = 1;
 835                 gchar *attachdir;
 836                 gchar *attachname = g_strdup(get_part_name(attachment));
 837                 AlertValue aval = G_ALERTDEFAULT;
 838                 gchar *res;
 839
 840                 if (!attachname || !strlen(attachname))
 841                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 842                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 843                 g_snprintf(buf, sizeof(buf), "%s%s",
 844                            dirname,
 845                            (attachname[0] == G_DIR_SEPARATOR)
 846                            ? &attachname[1]
 847                            : attachname);
 848                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 849                 attachdir = g_dirname(buf);
 850                 make_dir_hier(attachdir);
 851                 g_free(attachdir);
 852
 853                 if (is_file_exist(buf)) {
 854                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 855                                               attachname);
 856                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 857                                           _("Cancel"), NULL);
 858                         g_free(res);
 859                 }
 860                 g_free(attachname);
 861
 862                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 863                         alertpanel_error(_("Can't save the part of multipart message."));
 864                 attachment = attachment->next;
 865         }
 866 }
 867
 868 static void mimeview_display_as_text(MimeView *mimeview)
 869 {
 870         MimeInfo *partinfo;
 871
 872         if (!mimeview->opened) return;
 873
 874         partinfo = gtk_ctree_node_get_row_data
 875                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 876         mimeview_show_message_part(mimeview, partinfo);
 877 }
 878
 879 static void mimeview_show_image(MimeView *mimeview)
 880 {
 881         MimeInfo *partinfo;
 882
 883         if (!mimeview->opened) return;
 884
 885         partinfo = gtk_ctree_node_get_row_data
 886                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 887         mimeview_show_image_part(mimeview, partinfo);
 888 }
 889
 890 static void mimeview_save_as(MimeView *mimeview)
 891 {
 892         gchar *filename;
 893         gchar *defname = NULL;
 894         MimeInfo *partinfo;
 895         gchar *res;
 896
 897         if (!mimeview->opened) return;
 898         if (!mimeview->file) return;
 899
 900         partinfo = gtk_ctree_node_get_row_data
 901                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 902         g_return_if_fail(partinfo != NULL);
 903
 904         if (partinfo->filename)
 905                 defname = partinfo->filename;
 906         else if (partinfo->name) {
 907                 Xstrdup_a(defname, partinfo->name, return);
 908                 subst_for_filename(defname);
 909         }
 910
 911         filename = filesel_select_file(_("Save as"), defname);
 912         if (!filename) return;
 913         if (is_file_exist(filename)) {
 914                 AlertValue aval;
 915                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 916                                       filename);
 917                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 918                                   _("Cancel"), NULL);
 919                 g_free(res);
 920                 if (G_ALERTDEFAULT != aval) return;
 921         }
 922
 923         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 924                 alertpanel_error
 925                         (_("Can't save the part of multipart message."));
 926 }
 927
 928 static void mimeview_launch(MimeView *mimeview)
 929 {
 930         MimeInfo *partinfo;
 931         gchar *filename;
 932
 933         if (!mimeview->opened) return;
 934         if (!mimeview->file) return;
 935
 936         partinfo = gtk_ctree_node_get_row_data
 937                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 938         g_return_if_fail(partinfo != NULL);
 939
 940         filename = procmime_get_tmp_file_name(partinfo);
 941
 942         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 943                 alertpanel_error
 944                         (_("Can't save the part of multipart message."));
 945         else
 946                 mimeview_view_file(filename, partinfo, NULL);
 947
 948         g_free(filename);
 949 }
 950
 951 static void mimeview_open_with(MimeView *mimeview)
 952 {
 953         MimeInfo *partinfo;
 954         gchar *filename;
 955         gchar *cmd;
 956
 957         if (!mimeview->opened) return;
 958         if (!mimeview->file) return;
 959
 960         partinfo = gtk_ctree_node_get_row_data
 961                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 962         g_return_if_fail(partinfo != NULL);
 963
 964         filename = procmime_get_tmp_file_name(partinfo);
 965
 966         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 967                 alertpanel_error
 968                         (_("Can't save the part of multipart message."));
 969                 g_free(filename);
 970                 return;
 971         }
 972
 973         if (!prefs_common.mime_open_cmd_history)
 974                 prefs_common.mime_open_cmd_history =
 975                         add_history(NULL, prefs_common.mime_open_cmd);
 976
 977         cmd = input_dialog_combo
 978                 (_("Open with"),
 979                  _("Enter the command line to open file:\n"
 980                    "(`%s' will be replaced with file name)"),
 981                  prefs_common.mime_open_cmd,
 982                  prefs_common.mime_open_cmd_history,
 983                  TRUE);
 984         if (cmd) {
 985                 mimeview_view_file(filename, partinfo, cmd);
 986                 g_free(prefs_common.mime_open_cmd);
 987                 prefs_common.mime_open_cmd = cmd;
 988                 prefs_common.mime_open_cmd_history =
 989                         add_history(prefs_common.mime_open_cmd_history, cmd);
 990         }
 991
 992         g_free(filename);
 993 }
 994
 995 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 996                                const gchar *cmdline)
 997 {
 998         static gchar *default_image_cmdline = "display '%s'";
 999         static gchar *default_audio_cmdline = "play '%s'";
1000         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1001         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1002         gchar buf[1024];
1003         gchar m_buf[1024];
1004         const gchar *cmd;
1005         const gchar *def_cmd;
1006         const gchar *p;
1007
1008         if (cmdline) {
1009                 cmd = cmdline;
1010                 def_cmd = NULL;
1011         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1012                 return;
1013         } else if (MIME_IMAGE == partinfo->mime_type) {
1014                 cmd = prefs_common.mime_image_viewer;
1015                 def_cmd = default_image_cmdline;
1016         } else if (MIME_AUDIO == partinfo->mime_type) {
1017                 cmd = prefs_common.mime_audio_player;
1018                 def_cmd = default_audio_cmdline;
1019         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1020                 cmd = prefs_common.uri_cmd;
1021                 def_cmd = default_html_cmdline;
1022         } else {
1023                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1024                            partinfo->content_type, "%s");
1025                 cmd = m_buf;
1026                 def_cmd = NULL;
1027         }
1028
1029         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1030             !strchr(p + 2, '%'))
1031                 g_snprintf(buf, sizeof(buf), cmd, filename);
1032         else {
1033                 if (cmd)
1034                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1035                 if (def_cmd)
1036                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1037                 else
1038                         return;
1039         }
1040
1041         execute_command_line(buf, TRUE);
1042 }
1043
1044 #if USE_GPGME
1045 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1046                              gpointer data)
1047 {
1048         MimeInfo *partinfo;
1049         gchar *part_name;
1050
1051         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1052         g_return_if_fail(partinfo != NULL);
1053
1054         part_name = get_part_name(partinfo);
1055         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1056 }
1057
1058 static void mimeview_update_names(MimeView *mimeview)
1059 {
1060         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1061
1062         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1063 }
1064
1065 static void mimeview_update_signature_info(MimeView *mimeview)
1066 {
1067         MimeInfo *partinfo;
1068
1069         if (!mimeview) return;
1070         if (!mimeview->opened) return;
1071
1072         partinfo = gtk_ctree_node_get_row_data
1073                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1074         if (!partinfo) return;
1075
1076         if (g_strcasecmp(partinfo->content_type,
1077                          "application/pgp-signature") == 0) {
1078                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1079                 textview_show_signature_part(mimeview->textview, partinfo);
1080         }
1081 }
1082
1083 void mimeview_check_signature(MimeView *mimeview)
1084 {
1085         MimeInfo *mimeinfo;
1086         FILE *fp;
1087
1088         g_return_if_fail (mimeview_is_signed(mimeview));
1089         g_return_if_fail (gpg_started);
1090
1091         mimeinfo = gtk_ctree_node_get_row_data
1092                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1093         g_return_if_fail(mimeinfo != NULL);
1094         g_return_if_fail(mimeview->file != NULL);
1095
1096         while (mimeinfo->parent)
1097                 mimeinfo = mimeinfo->parent;
1098
1099         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1100                 FILE_OP_ERROR(mimeview->file, "fopen");
1101                 return;
1102         }
1103
1104         rfc2015_check_signature(mimeinfo, fp);
1105         fclose(fp);
1106
1107         mimeview_update_names(mimeview);
1108         mimeview_update_signature_info(mimeview);
1109
1110         textview_show_message(mimeview->messageview->textview, mimeinfo,
1111                               mimeview->file);
1112 }
1113 #endif /* USE_GPGME */