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_save_as            (MimeView       *mimeview);
 104 static void mimeview_launch             (MimeView       *mimeview);
 105 static void mimeview_open_with          (MimeView       *mimeview);
 106 static void mimeview_view_file          (const gchar    *filename,
 107                                          MimeInfo       *partinfo,
 108                                          const gchar    *cmdline);
 109 #if USE_GPGME
 110 static void mimeview_check_signature    (MimeView       *mimeview);
 111 #endif
 112
 113 static GtkItemFactoryEntry mimeview_popup_entries[] =
 114 {
 115         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 116         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 117         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 118         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL}
 119 #if USE_GPGME
 120         ,
 121         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 122 #endif
 123 };
 124
 125 static GtkTargetEntry mimeview_mime_types[] =
 126 {
 127         {"text/uri-list", 0, 0}
 128 };
 129
 130 MimeView *mimeview_create(void)
 131 {
 132         MimeView *mimeview;
 133
 134         GtkWidget *notebook;
 135         GtkWidget *vbox;
 136         GtkWidget *paned;
 137         GtkWidget *scrolledwin;
 138         GtkWidget *ctree;
 139         GtkWidget *mime_vbox;
 140         GtkWidget *popupmenu;
 141         GtkItemFactory *popupfactory;
 142         gchar *titles[N_MIMEVIEW_COLS];
 143         gint n_entries;
 144         gint i;
 145
 146         debug_print(_("Creating MIME view...\n"));
 147         mimeview = g_new0(MimeView, 1);
 148
 149         titles[COL_MIMETYPE] = _("MIME Type");
 150         titles[COL_SIZE]     = _("Size");
 151         titles[COL_NAME]     = _("Name");
 152
 153         notebook = gtk_notebook_new();
 154         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 155
 156         vbox = gtk_vbox_new(FALSE, 0);
 157         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 158         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 159                                         _("Text"));
 160
 161         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 162         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 163                                        GTK_POLICY_AUTOMATIC,
 164                                        GTK_POLICY_ALWAYS);
 165         gtk_widget_set_usize(scrolledwin, -1, 80);
 166
 167         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 168         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 169         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 170         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 171                                            GTK_JUSTIFY_RIGHT);
 172         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 174         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 175                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 176                                        GTK_CAN_FOCUS);
 177         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 178
 179         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 180                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 181         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 182                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 183         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 184                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 185         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 186                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 187         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 188                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 189
 190         mime_vbox = gtk_vbox_new(FALSE, 0);
 191
 192         paned = gtk_vpaned_new();
 193         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 194         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 195         gtk_container_add(GTK_CONTAINER(notebook), paned);
 196         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 197                                         _("Attachments"));
 198
 199         gtk_widget_show_all(notebook);
 200
 201         n_entries = sizeof(mimeview_popup_entries) /
 202                 sizeof(mimeview_popup_entries[0]);
 203         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 204                                       "<MimeView>", &popupfactory, mimeview);
 205
 206         mimeview->notebook     = notebook;
 207         mimeview->vbox         = vbox;
 208         mimeview->paned        = paned;
 209         mimeview->scrolledwin  = scrolledwin;
 210         mimeview->ctree        = ctree;
 211         mimeview->mime_vbox    = mime_vbox;
 212         mimeview->popupmenu    = popupmenu;
 213         mimeview->popupfactory = popupfactory;
 214         mimeview->type         = -1;
 215
 216         return mimeview;
 217 }
 218
 219 void mimeview_init(MimeView *mimeview)
 220 {
 221 }
 222
 223 /*
 224  * Check whether the message is OpenPGP signed
 225  */
 226 #if USE_GPGME
 227 static gboolean mimeview_is_signed(MimeView *mimeview)
 228 {
 229         MimeInfo *partinfo;
 230
 231         debug_print("mimeview_is signed of %p\n", mimeview);
 232
 233         if (!mimeview) return FALSE;
 234         if (!mimeview->opened) return FALSE;
 235
 236         debug_print("mimeview_is_signed: open\n" );
 237
 238         if (!mimeview->file) return FALSE;
 239
 240         debug_print("mimeview_is_signed: file\n" );
 241
 242         partinfo = gtk_ctree_node_get_row_data
 243                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 244         g_return_val_if_fail(partinfo != NULL, FALSE);
 245
 246         /* walk the tree and see whether there is a signature somewhere */
 247         do {
 248                 if (rfc2015_has_signature(partinfo))
 249                         return TRUE;
 250                 if (pgptext_has_signature(partinfo))
 251                         return TRUE;
 252         } while ((partinfo = partinfo->parent) != NULL);
 253
 254         debug_print("mimeview_is_signed: FALSE\n" );
 255
 256         return FALSE;
 257 }
 258
 259 static void set_unchecked_signature(MimeInfo *mimeinfo)
 260 {
 261         MimeInfo *sig_partinfo;
 262
 263         sig_partinfo = rfc2015_find_signature(mimeinfo);
 264         if (sig_partinfo == NULL) return;
 265
 266         g_free(sig_partinfo->sigstatus);
 267         sig_partinfo->sigstatus =
 268                 g_strdup(_("Select \"Check signature\" to check"));
 269
 270         g_free(sig_partinfo->sigstatus_full);
 271         sig_partinfo->sigstatus_full = NULL;
 272 }
 273 #endif /* USE_GPGME */
 274
 275 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 276                            const gchar *file)
 277 {
 278         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 279         GtkCTreeNode *node;
 280         gchar buf[BUFFSIZE];
 281         FILE *fp;
 282
 283         mimeview_clear(mimeview);
 284         textview_clear(mimeview->messageview->textview);
 285
 286         g_return_if_fail(file != NULL);
 287         g_return_if_fail(mimeinfo != NULL);
 288
 289         mimeview->mimeinfo = mimeinfo;
 290
 291         if ((fp = fopen(file, "r")) == NULL) {
 292                 FILE_OP_ERROR(file, "fopen");
 293                 return;
 294         }
 295         mimeview->file = g_strdup(file);
 296
 297         /* skip MIME part headers */
 298         if (mimeinfo->mime_type == MIME_MULTIPART) {
 299                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 300                         perror("fseek");
 301                 while (fgets(buf, sizeof(buf), fp) != NULL)
 302                         if (buf[0] == '\r' || buf[0] == '\n') break;
 303         }
 304
 305         procmime_scan_multipart_message(mimeinfo, fp);
 306 #if USE_GPGME
 307         if (prefs_common.auto_check_signatures)
 308                 rfc2015_check_signature(mimeinfo, fp);
 309         else
 310                 set_unchecked_signature(mimeinfo);
 311 #endif
 312
 313         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 314                                          mimeview);
 315
 316         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 317
 318         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 319                                            mimeview_selected, mimeview);
 320
 321         /* search first text part */
 322         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 323              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 324                 MimeInfo *partinfo;
 325
 326                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 327                 if (partinfo &&
 328                     (partinfo->mime_type == MIME_TEXT ||
 329                      partinfo->mime_type == MIME_TEXT_HTML)) {
 330                         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0)
 331                                 perror("fseek");
 332                         else
 333                                 textview_show_part
 334                                         (mimeview->messageview->textview,
 335                                          partinfo, fp);
 336                         break;
 337                 }
 338         }
 339         fclose(fp);
 340
 341         if (!node)
 342                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 343
 344         if (node) {
 345                 gtk_ctree_select(ctree, node);
 346                 gtkut_ctree_set_focus_row(ctree, node);
 347                 gtk_widget_grab_focus(mimeview->ctree);
 348         }
 349 }
 350
 351 void mimeview_destroy(MimeView *mimeview)
 352 {
 353         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 354         g_free(mimeview->file);
 355         g_free(mimeview);
 356 }
 357
 358 static void mimeview_set_multipart_tree(MimeView *mimeview,
 359                                         MimeInfo *mimeinfo,
 360                                         GtkCTreeNode *parent)
 361 {
 362         GtkCTreeNode *current = parent;
 363
 364         g_return_if_fail(mimeinfo != NULL);
 365
 366         if (!mimeinfo->sub && mimeinfo->parent)
 367                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 368
 369         if (mimeinfo->sub)
 370                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 371
 372         if (mimeinfo->children)
 373                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 374
 375         if (mimeinfo->next)
 376                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 377 }
 378
 379 static gchar *get_part_name(MimeInfo *partinfo)
 380 {
 381 #if USE_GPGME
 382         if (partinfo->sigstatus)
 383                 return partinfo->sigstatus;
 384         else
 385 #endif
 386         if (partinfo->name)
 387                 return partinfo->name;
 388         else if (partinfo->filename)
 389                 return partinfo->filename;
 390         else
 391                 return "";
 392 }
 393
 394 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 395                                           MimeInfo *partinfo,
 396                                           GtkCTreeNode *parent)
 397 {
 398         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 399         GtkCTreeNode *node;
 400         gchar *str[N_MIMEVIEW_COLS];
 401
 402         str[COL_MIMETYPE] =
 403                 partinfo->content_type ? partinfo->content_type : "";
 404         str[COL_SIZE] = to_human_readable(partinfo->size);
 405         str[COL_NAME] = get_part_name(partinfo);
 406
 407         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 408                                      NULL, NULL, NULL, NULL,
 409                                      FALSE, TRUE);
 410         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 411
 412         return node;
 413 }
 414
 415 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 416 {
 417         FILE *fp;
 418         const gchar *fname;
 419 #if USE_GPGME
 420         MimeInfo *pi;
 421 #endif
 422
 423         if (!partinfo) return;
 424
 425 #if USE_GPGME
 426         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 427                 ;
 428         fname = pi ? pi->plaintextfile : mimeview->file;
 429 #else
 430         fname = mimeview->file;
 431 #endif /* USE_GPGME */
 432         if (!fname) return;
 433
 434         if ((fp = fopen(fname, "r")) == NULL) {
 435                 FILE_OP_ERROR(fname, "fopen");
 436                 return;
 437         }
 438
 439         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 440                 FILE_OP_ERROR(mimeview->file, "fseek");
 441                 fclose(fp);
 442                 return;
 443         }
 444
 445         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 446         textview_show_part(mimeview->textview, partinfo, fp);
 447
 448         fclose(fp);
 449 }
 450
 451 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 452 {
 453         gchar *filename;
 454
 455         if (!partinfo) return;
 456
 457         filename = procmime_get_tmp_file_name(partinfo);
 458
 459         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 460                 alertpanel_error
 461                         (_("Can't get the part of multipart message."));
 462         else {
 463                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 464                 /* Workaround for the GTK+ bug with handling scroll adjustments
 465                  * in GtkViewport */
 466                 imageview_clear(mimeview->imageview);
 467                 imageview_show_image(mimeview->imageview, partinfo, filename);
 468                 unlink(filename);
 469         }
 470
 471         g_free(filename);
 472 }
 473
 474 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 475 {
 476         TextView  *textview  = mimeview->textview;
 477         ImageView *imageview = mimeview->imageview;
 478         GList *children;
 479
 480         if (mimeview->type == type) return;
 481
 482         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 483         if (children) {
 484                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 485                                        GTK_WIDGET(children->data));
 486                 g_list_free(children);
 487         }
 488
 489         switch (type) {
 490         case MIMEVIEW_IMAGE:
 491                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 492                                   GTK_WIDGET_PTR(imageview));
 493                 break;
 494         case MIMEVIEW_TEXT:
 495                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 496                                   GTK_WIDGET_PTR(textview));
 497                 break;
 498         default:
 499                 return;
 500         }
 501
 502         mimeview->type = type;
 503 }
 504
 505 static void mimeview_clear(MimeView *mimeview)
 506 {
 507         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 508
 509         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 510         mimeview->mimeinfo = NULL;
 511
 512         gtk_clist_clear(clist);
 513         textview_clear(mimeview->textview);
 514         imageview_clear(mimeview->imageview);
 515
 516         mimeview->opened = NULL;
 517
 518         g_free(mimeview->file);
 519         mimeview->file = NULL;
 520
 521         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 522 }
 523
 524 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 525                               MimeView *mimeview)
 526 {
 527         MimeInfo *partinfo;
 528
 529         if (mimeview->opened == node) return;
 530         mimeview->opened = node;
 531         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 532
 533         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 534         if (!partinfo) return;
 535
 536         /* ungrab the mouse event */
 537         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 538                 gtk_grab_remove(GTK_WIDGET(ctree));
 539                 if (gdk_pointer_is_grabbed())
 540                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 541         }
 542
 543         switch (partinfo->mime_type) {
 544         case MIME_TEXT:
 545         case MIME_TEXT_HTML:
 546         case MIME_TEXT_ENRICHED:
 547         case MIME_MESSAGE_RFC822:
 548         case MIME_MULTIPART:
 549                 mimeview_show_message_part(mimeview, partinfo);
 550                 break;
 551 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 552         case MIME_IMAGE:
 553                 mimeview_show_image_part(mimeview, partinfo);
 554                 break;
 555 #endif
 556         default:
 557                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 558 #if USE_GPGME
 559                 if (g_strcasecmp(partinfo->content_type,
 560                                  "application/pgp-signature") == 0)
 561                         textview_show_signature_part(mimeview->textview,
 562                                                      partinfo);
 563                 else
 564 #endif
 565                         textview_show_mime_part(mimeview->textview, partinfo);
 566                 break;
 567         }
 568 }
 569
 570 static void mimeview_start_drag(GtkWidget *widget, gint button,
 571                                 GdkEvent *event, MimeView *mimeview)
 572 {
 573         GtkTargetList *list;
 574         GdkDragContext *context;
 575         MimeInfo *partinfo;
 576         GtkCTree *ctree;
 577
 578         g_return_if_fail(mimeview != NULL);
 579         ctree = GTK_CTREE(mimeview->ctree);
 580         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 581         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 582
 583         list = gtk_target_list_new(mimeview_mime_types, 1);
 584         context = gtk_drag_begin(widget, list,
 585                                  GDK_ACTION_COPY, button, event);
 586         gtk_drag_set_icon_default(context);
 587 }
 588
 589 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 590                                     MimeView *mimeview)
 591 {
 592         GtkCList *clist = GTK_CLIST(widget);
 593         MimeInfo *partinfo;
 594         gint row, column;
 595
 596         if (!event) return FALSE;
 597
 598         if (event->button == 2 || event->button == 3) {
 599                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 600                                                   &row, &column))
 601                         return FALSE;
 602                 gtk_clist_unselect_all(clist);
 603                 gtk_clist_select_row(clist, row, column);
 604                 gtkut_clist_set_focus_row(clist, row);
 605         }
 606
 607         if (event->button == 2 ||
 608             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 609                 /* call external program for image, audio or html */
 610                 mimeview_launch(mimeview);
 611         } else if (event->button == 3) {
 612                 partinfo = gtk_ctree_node_get_row_data
 613                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 614                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 615                                  partinfo->mime_type == MIME_TEXT_HTML ||
 616                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 617                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 618                                  partinfo->mime_type == MIME_IMAGE ||
 619                                  partinfo->mime_type == MIME_MULTIPART))
 620                         menu_set_sensitive(mimeview->popupfactory,
 621                                            "/Display as text", FALSE);
 622                 else
 623                         menu_set_sensitive(mimeview->popupfactory,
 624                                            "/Display as text", TRUE);
 625                 if (partinfo &&
 626                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 627                         menu_set_sensitive(mimeview->popupfactory,
 628                                            "/Open", FALSE);
 629                 else
 630                         menu_set_sensitive(mimeview->popupfactory,
 631                                            "/Open", TRUE);
 632 #if USE_GPGME
 633                 menu_set_sensitive(mimeview->popupfactory,
 634                                    "/Check signature",
 635                                    mimeview_is_signed(mimeview));
 636 #endif
 637
 638                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 639                                NULL, NULL, NULL, NULL,
 640                                event->button, event->time);
 641         }
 642
 643         return TRUE;
 644 }
 645
 646 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 647 {
 648         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 649 }
 650
 651 #define BREAK_ON_MODIFIER_KEY() \
 652         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 653
 654 #define KEY_PRESS_EVENT_STOP() \
 655         if (gtk_signal_n_emissions_by_name \
 656                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 657                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 658                                              "key_press_event"); \
 659         }
 660
 661 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 662                                  MimeView *mimeview)
 663 {
 664         SummaryView *summaryview;
 665         GtkCTree *ctree = GTK_CTREE(widget);
 666         GtkCTreeNode *node;
 667
 668         if (!event) return FALSE;
 669         if (!mimeview->opened) return FALSE;
 670
 671         switch (event->keyval) {
 672         case GDK_space:
 673                 if (textview_scroll_page(mimeview->textview, FALSE))
 674                         return TRUE;
 675
 676                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 677                 if (node) {
 678                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 679                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 680                         return TRUE;
 681                 }
 682                 break;
 683         case GDK_BackSpace:
 684                 textview_scroll_page(mimeview->textview, TRUE);
 685                 return TRUE;
 686         case GDK_Return:
 687                 textview_scroll_one_line(mimeview->textview,
 688                                          (event->state & GDK_MOD1_MASK) != 0);
 689                 return TRUE;
 690         case GDK_n:
 691         case GDK_N:
 692                 BREAK_ON_MODIFIER_KEY();
 693                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 694                 KEY_PRESS_EVENT_STOP();
 695
 696                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 697                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 698                 return TRUE;
 699         case GDK_p:
 700         case GDK_P:
 701                 BREAK_ON_MODIFIER_KEY();
 702                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 703                 KEY_PRESS_EVENT_STOP();
 704
 705                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 706                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 707                 return TRUE;
 708         case GDK_y:
 709                 BREAK_ON_MODIFIER_KEY();
 710                 KEY_PRESS_EVENT_STOP();
 711                 mimeview_save_as(mimeview);
 712                 return TRUE;
 713         case GDK_t:
 714                 BREAK_ON_MODIFIER_KEY();
 715                 KEY_PRESS_EVENT_STOP();
 716                 mimeview_display_as_text(mimeview);
 717                 return TRUE;
 718         case GDK_l:
 719                 BREAK_ON_MODIFIER_KEY();
 720                 KEY_PRESS_EVENT_STOP();
 721                 mimeview_launch(mimeview);
 722                 return TRUE;
 723         default:
 724         }
 725
 726         if (!mimeview->messageview->mainwin) return FALSE;
 727         summaryview = mimeview->messageview->mainwin->summaryview;
 728         summary_pass_key_press_event(summaryview, event);
 729         return TRUE;
 730 }
 731
 732 static void mimeview_drag_data_get(GtkWidget        *widget,
 733                                    GdkDragContext   *drag_context,
 734                                    GtkSelectionData *selection_data,
 735                                    guint             info,
 736                                    guint             time,
 737                                    MimeView         *mimeview)
 738 {
 739         gchar *filename, *uriname;
 740         MimeInfo *partinfo;
 741
 742         if (!mimeview->opened) return;
 743         if (!mimeview->file) return;
 744
 745         partinfo = gtk_ctree_node_get_row_data
 746                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 747         if (!partinfo) return;
 748         if (!partinfo->filename && !partinfo->name) return;
 749
 750         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 751         filename = g_basename(filename);
 752         if (*filename == '\0') return;
 753
 754         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 755                                filename, NULL);
 756
 757         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 758                 alertpanel_error
 759                         (_("Can't save the part of multipart message."));
 760
 761         uriname = g_strconcat("file:/", filename, NULL);
 762         gtk_selection_data_set(selection_data, selection_data->target, 8,
 763                                uriname, strlen(uriname));
 764
 765         g_free(uriname);
 766         g_free(filename);
 767 }
 768
 769 static void mimeview_display_as_text(MimeView *mimeview)
 770 {
 771         MimeInfo *partinfo;
 772
 773         if (!mimeview->opened) return;
 774
 775         partinfo = gtk_ctree_node_get_row_data
 776                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 777         mimeview_show_message_part(mimeview, partinfo);
 778 }
 779
 780 static void mimeview_save_as(MimeView *mimeview)
 781 {
 782         gchar *filename;
 783         gchar *defname = NULL;
 784         MimeInfo *partinfo;
 785
 786         if (!mimeview->opened) return;
 787         if (!mimeview->file) return;
 788
 789         partinfo = gtk_ctree_node_get_row_data
 790                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 791         g_return_if_fail(partinfo != NULL);
 792
 793         if (partinfo->filename)
 794                 defname = partinfo->filename;
 795         else if (partinfo->name) {
 796                 Xstrdup_a(defname, partinfo->name, return);
 797                 subst_for_filename(defname);
 798         }
 799
 800         filename = filesel_select_file(_("Save as"), defname);
 801         if (!filename) return;
 802         if (is_file_exist(filename)) {
 803                 AlertValue aval;
 804
 805                 aval = alertpanel(_("Overwrite"),
 806                                   _("Overwrite existing file?"),
 807                                   _("OK"), _("Cancel"), NULL);
 808                 if (G_ALERTDEFAULT != aval) return;
 809         }
 810
 811         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 812                 alertpanel_error
 813                         (_("Can't save the part of multipart message."));
 814 }
 815
 816 static void mimeview_launch(MimeView *mimeview)
 817 {
 818         MimeInfo *partinfo;
 819         gchar *filename;
 820
 821         if (!mimeview->opened) return;
 822         if (!mimeview->file) return;
 823
 824         partinfo = gtk_ctree_node_get_row_data
 825                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 826         g_return_if_fail(partinfo != NULL);
 827
 828         filename = procmime_get_tmp_file_name(partinfo);
 829
 830         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 831                 alertpanel_error
 832                         (_("Can't save the part of multipart message."));
 833         else
 834                 mimeview_view_file(filename, partinfo, NULL);
 835
 836         g_free(filename);
 837 }
 838
 839 static void mimeview_open_with(MimeView *mimeview)
 840 {
 841         MimeInfo *partinfo;
 842         gchar *filename;
 843         gchar *cmd;
 844
 845         if (!mimeview->opened) return;
 846         if (!mimeview->file) return;
 847
 848         partinfo = gtk_ctree_node_get_row_data
 849                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 850         g_return_if_fail(partinfo != NULL);
 851
 852         filename = procmime_get_tmp_file_name(partinfo);
 853
 854         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 855                 alertpanel_error
 856                         (_("Can't save the part of multipart message."));
 857                 g_free(filename);
 858                 return;
 859         }
 860
 861         if (!prefs_common.mime_open_cmd_history)
 862                 prefs_common.mime_open_cmd_history =
 863                         add_history(NULL, prefs_common.mime_open_cmd);
 864
 865         cmd = input_dialog_combo
 866                 (_("Open with"),
 867                  _("Enter the command line to open file:\n"
 868                    "(`%s' will be replaced with file name)"),
 869                  prefs_common.mime_open_cmd,
 870                  prefs_common.mime_open_cmd_history);
 871         if (cmd) {
 872                 mimeview_view_file(filename, partinfo, cmd);
 873                 g_free(prefs_common.mime_open_cmd);
 874                 prefs_common.mime_open_cmd = cmd;
 875                 prefs_common.mime_open_cmd_history =
 876                         add_history(prefs_common.mime_open_cmd_history, cmd);
 877         }
 878
 879         g_free(filename);
 880 }
 881
 882 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 883                                const gchar *cmdline)
 884 {
 885         static gchar *default_image_cmdline = "display '%s'";
 886         static gchar *default_audio_cmdline = "play '%s'";
 887         static gchar *default_html_cmdline =
 888                 "netscape -remote 'openURL(%s,raise)'";
 889         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 890         gchar buf[1024];
 891         gchar m_buf[1024];
 892         const gchar *cmd;
 893         const gchar *def_cmd;
 894         const gchar *p;
 895
 896         if (cmdline) {
 897                 cmd = cmdline;
 898                 def_cmd = NULL;
 899         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 900                 return;
 901         } else if (MIME_IMAGE == partinfo->mime_type) {
 902                 cmd = prefs_common.mime_image_viewer;
 903                 def_cmd = default_image_cmdline;
 904         } else if (MIME_AUDIO == partinfo->mime_type) {
 905                 cmd = prefs_common.mime_audio_player;
 906                 def_cmd = default_audio_cmdline;
 907         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 908                 cmd = prefs_common.uri_cmd;
 909                 def_cmd = default_html_cmdline;
 910         } else {
 911                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
 912                            partinfo->content_type, "%s");
 913                 cmd = m_buf;
 914                 def_cmd = NULL;
 915         }
 916
 917         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
 918             !strchr(p + 2, '%'))
 919                 g_snprintf(buf, sizeof(buf), cmd, filename);
 920         else {
 921                 if (cmd)
 922                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
 923                 if (def_cmd)
 924                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
 925                 else
 926                         return;
 927         }
 928
 929         execute_command_line(buf, TRUE);
 930 }
 931
 932 #if USE_GPGME
 933 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
 934                              gpointer data)
 935 {
 936         MimeInfo *partinfo;
 937         gchar *part_name;
 938
 939         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 940         g_return_if_fail(partinfo != NULL);
 941
 942         part_name = get_part_name(partinfo);
 943         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
 944 }
 945
 946 static void mimeview_update_names(MimeView *mimeview)
 947 {
 948         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 949
 950         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
 951 }
 952
 953 static void mimeview_update_signature_info(MimeView *mimeview)
 954 {
 955         MimeInfo *partinfo;
 956
 957         if (!mimeview) return;
 958         if (!mimeview->opened) return;
 959
 960         partinfo = gtk_ctree_node_get_row_data
 961                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 962         if (!partinfo) return;
 963
 964         if (g_strcasecmp(partinfo->content_type,
 965                          "application/pgp-signature") == 0) {
 966                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 967                 textview_show_signature_part(mimeview->textview, partinfo);
 968         }
 969 }
 970
 971 static void mimeview_check_signature(MimeView *mimeview)
 972 {
 973         MimeInfo *mimeinfo;
 974         gchar buf[BUFFSIZE];
 975         FILE *fp;
 976
 977         g_return_if_fail (mimeview_is_signed(mimeview));
 978
 979         mimeinfo = gtk_ctree_node_get_row_data
 980                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 981         g_return_if_fail(mimeinfo != NULL);
 982         g_return_if_fail(mimeview->file != NULL);
 983
 984         while (mimeinfo->parent)
 985                 mimeinfo = mimeinfo->parent;
 986
 987         if ((fp = fopen(mimeview->file, "r")) == NULL) {
 988                 FILE_OP_ERROR(mimeview->file, "fopen");
 989                 return;
 990         }
 991
 992         /* skip headers */
 993         if (mimeinfo->mime_type == MIME_MULTIPART) {
 994                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 995                 FILE_OP_ERROR(mimeview->file, "fseek");
 996                 while (fgets(buf, sizeof(buf), fp) != NULL)
 997                         if (buf[0] == '\r' || buf[0] == '\n') break;
 998         }
 999
1000         procmime_scan_multipart_message(mimeinfo, fp);
1001         rfc2015_check_signature(mimeinfo, fp);
1002         fclose(fp);
1003
1004         mimeview_update_names(mimeview);
1005         mimeview_update_signature_info(mimeview);
1006 }
1007 #endif /* USE_GPGME */