src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 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/gtkscrolledwindow.h>
  29 #include <gtk/gtkctree.h>
  30 #include <gtk/gtkvbox.h>
  31 #include <gtk/gtkvpaned.h>
  32 #include <gtk/gtktext.h>
  33 #include <gtk/gtksignal.h>
  34 #include <gtk/gtkmenu.h>
  35 #include <gtk/gtkdnd.h>
  36 #include <gtk/gtkselection.h>
  37 #include <stdio.h>
  38 #include <unistd.h>
  39
  40 #include "intl.h"
  41 #include "main.h"
  42 #include "mimeview.h"
  43 #include "textview.h"
  44 #include "procmime.h"
  45 #include "summaryview.h"
  46 #include "menu.h"
  47 #include "filesel.h"
  48 #include "alertpanel.h"
  49 #include "inputdialog.h"
  50 #include "utils.h"
  51 #include "gtkutils.h"
  52 #include "prefs_common.h"
  53 #include "rfc2015.h"
  54
  55 typedef enum
  56 {
  57         COL_MIMETYPE = 0,
  58         COL_SIZE     = 1,
  59         COL_NAME     = 2
  60 } MimeViewColumnPos;
  61
  62 #define N_MIMEVIEW_COLS 3
  63
  64 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  65                                                  MimeInfo       *mimeinfo,
  66                                                  GtkCTreeNode   *parent);
  67 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  68                                                  MimeInfo       *partinfo,
  69                                                  GtkCTreeNode   *parent);
  70 static void mimeview_show_message_part          (MimeView       *mimeview,
  71                                                  MimeInfo       *partinfo);
  72 static void mimeview_show_image_part            (MimeView       *mimeview,
  73                                                  MimeInfo       *partinfo);
  74 static void mimeview_change_view_type           (MimeView       *mimeview,
  75                                                  MimeViewType    type);
  76 static void mimeview_clear                      (MimeView       *mimeview);
  77
  78 static void mimeview_selected           (GtkCTree       *ctree,
  79                                          GtkCTreeNode   *node,
  80                                          gint            column,
  81                                          MimeView       *mimeview);
  82 static void mimeview_start_drag         (GtkWidget      *widget,
  83                                          gint            button,
  84                                          GdkEvent       *event,
  85                                          MimeView       *mimeview);
  86 static void mimeview_button_pressed     (GtkWidget      *widget,
  87                                          GdkEventButton *event,
  88                                          MimeView       *mimeview);
  89 static void mimeview_key_pressed        (GtkWidget      *widget,
  90                                          GdkEventKey    *event,
  91                                          MimeView       *mimeview);
  92
  93 static void mimeview_drag_data_get      (GtkWidget        *widget,
  94                                          GdkDragContext   *drag_context,
  95                                          GtkSelectionData *selection_data,
  96                                          guint             info,
  97                                          guint             time,
  98                                          MimeView         *mimeview);
  99
 100 static void mimeview_display_as_text    (MimeView       *mimeview);
 101 static void mimeview_save_as            (MimeView       *mimeview);
 102 static void mimeview_launch             (MimeView       *mimeview);
 103 static void mimeview_open_with          (MimeView       *mimeview);
 104 static void mimeview_view_file          (const gchar    *filename,
 105                                          MimeInfo       *partinfo,
 106                                          const gchar    *cmdline);
 107 #if USE_GPGME
 108 static void mimeview_check_signature    (MimeView       *mimeview);
 109 #endif
 110
 111 static GtkItemFactoryEntry mimeview_popup_entries[] =
 112 {
 113         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 114         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 115         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 116         {N_("/_Save as..."),      NULL, mimeview_save_as,         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 MimeView *mimeview_create(void)
 129 {
 130         MimeView *mimeview;
 131
 132         GtkWidget *paned;
 133         GtkWidget *scrolledwin;
 134         GtkWidget *ctree;
 135         GtkWidget *vbox;
 136         GtkWidget *popupmenu;
 137         GtkItemFactory *popupfactory;
 138
 139         gchar *titles[] = {_("MIME Type"), _("Size"), _("Name")};
 140         gint n_entries;
 141         gint i;
 142
 143         debug_print(_("Creating MIME view...\n"));
 144         mimeview = g_new0(MimeView, 1);
 145
 146         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 147         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 148                                        GTK_POLICY_AUTOMATIC,
 149                                        GTK_POLICY_ALWAYS);
 150         gtk_widget_set_usize(scrolledwin, -1, 80);
 151
 152         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 153         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 154         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 155         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 156                                            GTK_JUSTIFY_RIGHT);
 157         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 158         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 159         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 160                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 161                                        GTK_CAN_FOCUS);
 162         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 163
 164         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 165                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 166         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 167                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 168         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 169                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 170         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 171                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 172         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 173                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 174
 175         vbox = gtk_vbox_new(FALSE, 0);
 176
 177         paned = gtk_vpaned_new();
 178         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 179         gtk_paned_add2(GTK_PANED(paned), vbox);
 180         gtk_widget_show_all(paned);
 181
 182         n_entries = sizeof(mimeview_popup_entries) /
 183                 sizeof(mimeview_popup_entries[0]);
 184         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 185                                       "<MimeView>", &popupfactory, mimeview);
 186
 187         mimeview->paned       = paned;
 188         mimeview->scrolledwin = scrolledwin;
 189         mimeview->ctree       = ctree;
 190         mimeview->vbox        = vbox;
 191         mimeview->popupmenu   = popupmenu;
 192         mimeview->popupfactory = popupfactory;
 193
 194         return mimeview;
 195 }
 196
 197 void mimeview_init(MimeView *mimeview)
 198 {
 199 }
 200
 201 /*
 202  * Check whether the message is OpenPGP signed
 203  */
 204 #if USE_GPGME
 205 static gboolean mimeview_is_signed(MimeView *mimeview)
 206 {
 207         MimeInfo *partinfo;
 208
 209         debug_print("mimeview_is signed of %p\n", mimeview);
 210
 211         if (!mimeview) return FALSE;
 212         if (!mimeview->opened) return FALSE;
 213
 214         debug_print("mimeview_is_signed: open\n" );
 215
 216         if (!mimeview->file) return FALSE;
 217
 218         debug_print("mimeview_is_signed: file\n" );
 219
 220         partinfo = gtk_ctree_node_get_row_data
 221                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 222         g_return_val_if_fail(partinfo != NULL, FALSE);
 223
 224         /* walk the tree and see whether there is a signature somewhere */
 225         do {
 226                 if (rfc2015_has_signature(partinfo))
 227                         return TRUE;
 228         } while ((partinfo = partinfo->parent) != NULL);
 229
 230         debug_print("mimeview_is_signed: FALSE\n" );
 231
 232         return FALSE;
 233 }
 234
 235 static void set_unchecked_signature(MimeInfo *mimeinfo)
 236 {
 237         MimeInfo *sig_partinfo;
 238
 239         sig_partinfo = rfc2015_find_signature(mimeinfo);
 240         if (sig_partinfo == NULL) return;
 241
 242         g_free(sig_partinfo->sigstatus);
 243         sig_partinfo->sigstatus =
 244                 g_strdup(_("Select \"Check signature\" to check"));
 245
 246         g_free(sig_partinfo->sigstatus_full);
 247         sig_partinfo->sigstatus_full = NULL;
 248 }
 249 #endif /* USE_GPGME */
 250
 251 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 252                            const gchar *file)
 253 {
 254         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 255         GtkCTreeNode *node;
 256         gchar buf[BUFFSIZE];
 257         FILE *fp;
 258
 259         mimeview_clear(mimeview);
 260
 261         g_return_if_fail(file != NULL);
 262         g_return_if_fail(mimeinfo != NULL);
 263
 264         mimeview->mimeinfo = mimeinfo;
 265
 266         if ((fp = fopen(file, "r")) == NULL) {
 267                 FILE_OP_ERROR(file, "fopen");
 268                 return;
 269         }
 270         mimeview->file = g_strdup(file);
 271
 272         /* skip MIME part headers */
 273         if (mimeinfo->mime_type == MIME_MULTIPART) {
 274                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 275                 perror("fseek");
 276                 while (fgets(buf, sizeof(buf), fp) != NULL)
 277                         if (buf[0] == '\r' || buf[0] == '\n') break;
 278         }
 279
 280         procmime_scan_multipart_message(mimeinfo, fp);
 281 #if USE_GPGME
 282         if (prefs_common.auto_check_signatures)
 283                 rfc2015_check_signature(mimeinfo, fp);
 284         else
 285                 set_unchecked_signature(mimeinfo);
 286 #endif
 287         fclose(fp);
 288
 289         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 290                                          mimeview);
 291
 292         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 293
 294         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 295                                            mimeview_selected, mimeview);
 296
 297         /* search first text part */
 298         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 299              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 300                 MimeInfo *partinfo;
 301
 302                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 303                 if (partinfo && partinfo->mime_type == MIME_TEXT)
 304                         break;
 305         }
 306         if (!node)
 307                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 308
 309         if (node) {
 310                 gtk_ctree_select(ctree, node);
 311                 gtkut_ctree_set_focus_row(ctree, node);
 312                 gtk_widget_grab_focus(mimeview->ctree);
 313         }
 314 }
 315
 316 void mimeview_destroy(MimeView *mimeview)
 317 {
 318         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 319         g_free(mimeview->file);
 320         g_free(mimeview);
 321 }
 322
 323 static void mimeview_set_multipart_tree(MimeView *mimeview,
 324                                         MimeInfo *mimeinfo,
 325                                         GtkCTreeNode *parent)
 326 {
 327         g_return_if_fail(mimeinfo != NULL);
 328
 329         if (!mimeinfo->main && mimeinfo->parent)
 330                 parent = mimeview_append_part(mimeview, mimeinfo, parent);
 331
 332         if (mimeinfo->sub && mimeinfo->sub->children)
 333                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, parent);
 334
 335         if (mimeinfo->children) {
 336                 MimeInfo *child;
 337
 338                 child = mimeinfo->children;
 339                 while (child) {
 340                         mimeview_set_multipart_tree(mimeview, child, parent);
 341                         child = child->next;
 342                 }
 343         }
 344 }
 345
 346 static gchar *get_part_name(MimeInfo *partinfo)
 347 {
 348 #if USE_GPGME
 349         if (partinfo->sigstatus)
 350                 return partinfo->sigstatus;
 351         else
 352 #endif
 353         if (partinfo->name)
 354                 return partinfo->name;
 355         else if (partinfo->filename)
 356                 return partinfo->filename;
 357         else
 358                 return "";
 359 }
 360
 361 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 362                                           MimeInfo *partinfo,
 363                                           GtkCTreeNode *parent)
 364 {
 365         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 366         GtkCTreeNode *node;
 367         gchar *str[N_MIMEVIEW_COLS];
 368
 369         str[COL_MIMETYPE] =
 370                 partinfo->content_type ? partinfo->content_type : "";
 371         str[COL_SIZE] = to_human_readable(partinfo->size);
 372         str[COL_NAME] = get_part_name(partinfo);
 373
 374         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 375                                      NULL, NULL, NULL, NULL,
 376                                      FALSE, TRUE);
 377         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 378
 379         return node;
 380 }
 381
 382 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 383 {
 384         FILE *fp;
 385         const gchar *fname;
 386 #if USE_GPGME
 387         MimeInfo *pi;
 388 #endif
 389
 390         if (!partinfo) return;
 391
 392 #if USE_GPGME
 393         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 394                 ;
 395         fname = pi ? pi->plaintextfile : mimeview->file;
 396 #else
 397         fname = mimeview->file;
 398 #endif /* USE_GPGME */
 399         if (!fname) return;
 400
 401         if ((fp = fopen(fname, "r")) == NULL) {
 402                 FILE_OP_ERROR(fname, "fopen");
 403                 return;
 404         }
 405
 406         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 407                 FILE_OP_ERROR(mimeview->file, "fseek");
 408                 fclose(fp);
 409                 return;
 410         }
 411
 412         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 413         textview_show_part(mimeview->textview, partinfo, fp);
 414
 415         fclose(fp);
 416 }
 417
 418 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 419 {
 420         gchar *filename;
 421
 422         if (!partinfo) return;
 423
 424         filename = procmime_get_tmp_file_name(partinfo);
 425
 426         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 427                 alertpanel_error
 428                         (_("Can't get the part of multipart message."));
 429         else {
 430                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 431                 imageview_show_image(mimeview->imageview, partinfo, filename);
 432                 unlink(filename);
 433         }
 434
 435         g_free(filename);
 436 }
 437
 438 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 439 {
 440         TextView  *textview  = mimeview->textview;
 441         ImageView *imageview = mimeview->imageview;
 442
 443         if (mimeview->type == type) return;
 444
 445         switch (type) {
 446         case MIMEVIEW_IMAGE:
 447                 gtk_container_remove(GTK_CONTAINER(mimeview->vbox),
 448                                      GTK_WIDGET_PTR(textview));
 449                 gtk_container_add(GTK_CONTAINER(mimeview->vbox),
 450                                   GTK_WIDGET_PTR(imageview));
 451                 break;
 452         case MIMEVIEW_TEXT:
 453                 gtk_container_remove(GTK_CONTAINER(mimeview->vbox),
 454                                      GTK_WIDGET_PTR(imageview));
 455                 gtk_container_add(GTK_CONTAINER(mimeview->vbox),
 456                                   GTK_WIDGET_PTR(textview));
 457                 break;
 458         default:
 459                 return;
 460         }
 461
 462         mimeview->type = type;
 463 }
 464
 465 static void mimeview_clear(MimeView *mimeview)
 466 {
 467         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 468
 469         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 470         mimeview->mimeinfo = NULL;
 471
 472         gtk_clist_clear(clist);
 473         textview_clear(mimeview->textview);
 474
 475         mimeview->opened = NULL;
 476
 477         g_free(mimeview->file);
 478         mimeview->file = NULL;
 479 }
 480
 481 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 482                               MimeView *mimeview)
 483 {
 484         MimeInfo *partinfo;
 485
 486         if (mimeview->opened == node) return;
 487         mimeview->opened = node;
 488         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 489
 490         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 491         if (!partinfo) return;
 492
 493         /* ungrab the mouse event */
 494         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 495                 gtk_grab_remove(GTK_WIDGET(ctree));
 496                 if (gdk_pointer_is_grabbed())
 497                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 498         }
 499
 500         switch (partinfo->mime_type) {
 501         case MIME_TEXT:
 502         case MIME_TEXT_HTML:
 503         case MIME_MESSAGE_RFC822:
 504         case MIME_MULTIPART:
 505                 mimeview_show_message_part(mimeview, partinfo);
 506                 break;
 507 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 508         case MIME_IMAGE:
 509                 mimeview_show_image_part(mimeview, partinfo);
 510                 break;
 511 #endif
 512         default:
 513                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 514 #if USE_GPGME
 515                 if (g_strcasecmp(partinfo->content_type,
 516                                  "application/pgp-signature") == 0)
 517                         textview_show_signature_part(mimeview->textview,
 518                                                      partinfo);
 519                 else
 520 #endif
 521                         textview_show_mime_part(mimeview->textview, partinfo);
 522                 break;
 523         }
 524 }
 525
 526 static void mimeview_start_drag (GtkWidget *widget, gint button,
 527                                  GdkEvent *event, MimeView *mimeview)
 528 {
 529         GtkTargetList *list;
 530         GdkDragContext *context;
 531         MimeInfo *partinfo;
 532         GtkCTree *ctree;
 533
 534         g_return_if_fail(mimeview != NULL);
 535         ctree = GTK_CTREE(mimeview->ctree);
 536         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 537         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 538
 539         list = gtk_target_list_new(mimeview_mime_types, 1);
 540         context = gtk_drag_begin(widget, list,
 541                                  GDK_ACTION_COPY, button, event);
 542         gtk_drag_set_icon_default(context);
 543 }
 544
 545 static void mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 546                                     MimeView *mimeview)
 547 {
 548         GtkCList *clist = GTK_CLIST(widget);
 549         MimeInfo *partinfo;
 550         gint row, column;
 551
 552         if (!event) return;
 553
 554         if (event->button == 2 || event->button == 3) {
 555                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 556                                                   &row, &column))
 557                         return;
 558                 gtk_clist_unselect_all(clist);
 559                 gtk_clist_select_row(clist, row, column);
 560                 gtkut_clist_set_focus_row(clist, row);
 561         }
 562
 563         if (event->button == 2 ||
 564             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 565                 /* call external program for image, audio or html */
 566                 mimeview_launch(mimeview);
 567         } else if (event->button == 3) {
 568                 partinfo = gtk_ctree_node_get_row_data
 569                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 570                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 571                                  partinfo->mime_type == MIME_TEXT_HTML ||
 572                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 573                                  partinfo->mime_type == MIME_IMAGE ||
 574                                  partinfo->mime_type == MIME_MULTIPART))
 575                         menu_set_sensitive(mimeview->popupfactory,
 576                                            "/Display as text", FALSE);
 577                 else
 578                         menu_set_sensitive(mimeview->popupfactory,
 579                                            "/Display as text", TRUE);
 580                 if (partinfo &&
 581                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 582                         menu_set_sensitive(mimeview->popupfactory,
 583                                            "/Open", FALSE);
 584                 else
 585                         menu_set_sensitive(mimeview->popupfactory,
 586                                            "/Open", TRUE);
 587 #if USE_GPGME
 588                 menu_set_sensitive(mimeview->popupfactory,
 589                                    "/Check signature",
 590                                    mimeview_is_signed(mimeview));
 591 #endif
 592
 593                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 594                                NULL, NULL, NULL, NULL,
 595                                event->button, event->time);
 596         }
 597 }
 598
 599 #define BREAK_ON_MODIFIER_KEY() \
 600         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 601
 602 static void mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 603                                  MimeView *mimeview)
 604 {
 605         SummaryView *summaryview;
 606         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 607         GtkCTreeNode *node;
 608
 609         if (!event) return;
 610         if (!mimeview->opened) return;
 611
 612         switch (event->keyval) {
 613         case GDK_space:
 614                 if (textview_scroll_page(mimeview->textview, FALSE)) return;
 615
 616                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 617                 if (node) {
 618                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 619                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 620                         return;
 621                 }
 622                 break;
 623         case GDK_BackSpace:
 624         case GDK_Delete:
 625                 textview_scroll_page(mimeview->textview, TRUE);
 626                 return;
 627         case GDK_Return:
 628                 textview_scroll_one_line(mimeview->textview,
 629                                          (event->state & GDK_MOD1_MASK) != 0);
 630                 return;
 631         case GDK_n:
 632         case GDK_N:
 633                 BREAK_ON_MODIFIER_KEY();
 634                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 635
 636                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 637                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 638                 return;
 639         case GDK_p:
 640         case GDK_P:
 641                 BREAK_ON_MODIFIER_KEY();
 642                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 643
 644                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 645                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 646                 return;
 647         case GDK_y:
 648                 BREAK_ON_MODIFIER_KEY();
 649                 mimeview_save_as(mimeview);
 650                 return;
 651         case GDK_t:
 652                 BREAK_ON_MODIFIER_KEY();
 653                 mimeview_display_as_text(mimeview);
 654                 return;
 655         case GDK_l:
 656                 BREAK_ON_MODIFIER_KEY();
 657                 mimeview_launch(mimeview);
 658                 return;
 659         default:
 660                 break;
 661         }
 662
 663         if (!mimeview->messageview->mainwin) return;
 664         summaryview = mimeview->messageview->mainwin->summaryview;
 665         summary_pass_key_press_event(summaryview, event);
 666 }
 667
 668 static void mimeview_drag_data_get(GtkWidget        *widget,
 669                                    GdkDragContext   *drag_context,
 670                                    GtkSelectionData *selection_data,
 671                                    guint             info,
 672                                    guint             time,
 673                                    MimeView         *mimeview)
 674 {
 675         gchar *filename, *uriname;
 676         MimeInfo *partinfo;
 677
 678         if (!mimeview->opened) return;
 679         if (!mimeview->file) return;
 680
 681         partinfo = gtk_ctree_node_get_row_data
 682                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 683         if (!partinfo) return;
 684         if (!partinfo->filename && !partinfo->name) return;
 685
 686         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 687         filename = g_basename(filename);
 688         if (*filename == '\0') return;
 689
 690         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 691                                filename, NULL);
 692
 693         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 694                 alertpanel_error
 695                         (_("Can't save the part of multipart message."));
 696
 697         uriname = g_strconcat("file:/", filename, NULL);
 698         gtk_selection_data_set(selection_data, selection_data->target, 8,
 699                                uriname, strlen(uriname));
 700
 701         g_free(uriname);
 702         g_free(filename);
 703 }
 704
 705 static void mimeview_display_as_text(MimeView *mimeview)
 706 {
 707         MimeInfo *partinfo;
 708
 709         if (!mimeview->opened) return;
 710
 711         partinfo = gtk_ctree_node_get_row_data
 712                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 713         mimeview_show_message_part(mimeview, partinfo);
 714 }
 715
 716 static void mimeview_save_as(MimeView *mimeview)
 717 {
 718         gchar *filename;
 719         MimeInfo *partinfo;
 720
 721         if (!mimeview->opened) return;
 722         if (!mimeview->file) return;
 723
 724         partinfo = gtk_ctree_node_get_row_data
 725                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 726         g_return_if_fail(partinfo != NULL);
 727
 728         filename = filesel_select_file
 729                 (_("Save as"),
 730                  partinfo->filename ? partinfo->filename : partinfo->name);
 731         if (!filename) return;
 732         if (is_file_exist(filename)) {
 733                 AlertValue aval;
 734
 735                 aval = alertpanel(_("Overwrite"),
 736                                   _("Overwrite existing file?"),
 737                                   _("OK"), _("Cancel"), NULL);
 738                 if (G_ALERTDEFAULT != aval) return;
 739         }
 740
 741         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 742                 alertpanel_error
 743                         (_("Can't save the part of multipart message."));
 744 }
 745
 746 static void mimeview_launch(MimeView *mimeview)
 747 {
 748         MimeInfo *partinfo;
 749         gchar *filename;
 750
 751         if (!mimeview->opened) return;
 752         if (!mimeview->file) return;
 753
 754         partinfo = gtk_ctree_node_get_row_data
 755                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 756         g_return_if_fail(partinfo != NULL);
 757
 758         filename = procmime_get_tmp_file_name(partinfo);
 759
 760         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 761                 alertpanel_error
 762                         (_("Can't save the part of multipart message."));
 763         else
 764                 mimeview_view_file(filename, partinfo, NULL);
 765
 766         g_free(filename);
 767 }
 768
 769 static void mimeview_open_with(MimeView *mimeview)
 770 {
 771         MimeInfo *partinfo;
 772         gchar *filename;
 773
 774         if (!mimeview->opened) return;
 775         if (!mimeview->file) return;
 776
 777         partinfo = gtk_ctree_node_get_row_data
 778                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 779         g_return_if_fail(partinfo != NULL);
 780
 781         filename = procmime_get_tmp_file_name(partinfo);
 782
 783         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 784                 alertpanel_error
 785                         (_("Can't save the part of multipart message."));
 786         else {
 787                 gchar *cmd;
 788
 789                 cmd = input_dialog
 790                         (_("Open with"),
 791                          _("Enter the command line to open file:\n"
 792                            "(`%s' will be replaced with file name)"),
 793                          "gedit '%s'");
 794                 if (cmd) {
 795                         mimeview_view_file(filename, partinfo, cmd);
 796                         g_free(cmd);
 797                 }
 798         }
 799
 800         g_free(filename);
 801 }
 802
 803 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 804                                const gchar *cmdline)
 805 {
 806         static gchar *default_image_cmdline = "display '%s'";
 807         static gchar *default_audio_cmdline = "play '%s'";
 808         static gchar *default_html_cmdline =
 809                 "netscape -remote 'openURL(%s,raise)'";
 810         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 811         gchar buf[1024];
 812         gchar m_buf[1024];
 813         const gchar *cmd;
 814         const gchar *def_cmd;
 815         const gchar *p;
 816
 817         if (cmdline) {
 818                 cmd = cmdline;
 819                 def_cmd = NULL;
 820         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 821                 return;
 822         } else if (MIME_IMAGE == partinfo->mime_type) {
 823                 cmd = prefs_common.mime_image_viewer;
 824                 def_cmd = default_image_cmdline;
 825         } else if (MIME_AUDIO == partinfo->mime_type) {
 826                 cmd = prefs_common.mime_audio_player;
 827                 def_cmd = default_audio_cmdline;
 828         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 829                 cmd = prefs_common.uri_cmd;
 830                 def_cmd = default_html_cmdline;
 831         } else {
 832                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
 833                            partinfo->content_type, "%s");
 834                 cmd = m_buf;
 835                 def_cmd = NULL;
 836         }
 837
 838         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
 839             !strchr(p + 2, '%'))
 840                 g_snprintf(buf, sizeof(buf), cmd, filename);
 841         else {
 842                 if (cmd)
 843                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
 844                 if (def_cmd)
 845                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
 846                 else
 847                         return;
 848         }
 849
 850         execute_command_line(buf, TRUE);
 851 }
 852
 853 #if USE_GPGME
 854 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
 855                              gpointer data)
 856 {
 857         MimeInfo *partinfo;
 858         gchar *part_name;
 859
 860         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 861         g_return_if_fail(partinfo != NULL);
 862
 863         part_name = get_part_name(partinfo);
 864         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
 865 }
 866
 867 static void mimeview_update_names(MimeView *mimeview)
 868 {
 869         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 870
 871         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
 872 }
 873
 874 static void mimeview_update_signature_info(MimeView *mimeview)
 875 {
 876         MimeInfo *partinfo;
 877
 878         if (!mimeview) return;
 879         if (!mimeview->opened) return;
 880
 881         partinfo = gtk_ctree_node_get_row_data
 882                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 883         if (!partinfo) return;
 884
 885         if (g_strcasecmp(partinfo->content_type,
 886                          "application/pgp-signature") == 0) {
 887                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 888                 textview_show_signature_part(mimeview->textview, partinfo);
 889         }
 890 }
 891
 892 static void mimeview_check_signature(MimeView *mimeview)
 893 {
 894         MimeInfo *mimeinfo;
 895         gchar buf[BUFFSIZE];
 896         FILE *fp;
 897
 898         g_return_if_fail (mimeview_is_signed(mimeview));
 899
 900         mimeinfo = gtk_ctree_node_get_row_data
 901                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 902         g_return_if_fail(mimeinfo != NULL);
 903         g_return_if_fail(mimeview->file != NULL);
 904
 905         while (mimeinfo->parent)
 906                 mimeinfo = mimeinfo->parent;
 907
 908         if ((fp = fopen(mimeview->file, "r")) == NULL) {
 909                 FILE_OP_ERROR(mimeview->file, "fopen");
 910                 return;
 911         }
 912
 913         /* skip headers */
 914         if (mimeinfo->mime_type == MIME_MULTIPART) {
 915                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 916                 FILE_OP_ERROR(mimeview->file, "fseek");
 917                 while (fgets(buf, sizeof(buf), fp) != NULL)
 918                         if (buf[0] == '\r' || buf[0] == '\n') break;
 919         }
 920
 921         procmime_scan_multipart_message(mimeinfo, fp);
 922         rfc2015_check_signature(mimeinfo, fp);
 923         fclose(fp);
 924
 925         mimeview_update_names(mimeview);
 926         mimeview_update_signature_info(mimeview);
 927 }
 928 #endif /* USE_GPGME */