src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <gtk/gtknotebook.h>
  29 #include <gtk/gtkscrolledwindow.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkvbox.h>
  32 #include <gtk/gtkvpaned.h>
  33 #include <gtk/gtktext.h>
  34 #include <gtk/gtksignal.h>
  35 #include <gtk/gtkmenu.h>
  36 #include <gtk/gtkdnd.h>
  37 #include <gtk/gtkselection.h>
  38 #include <stdio.h>
  39 #include <unistd.h>
  40 #include <fnmatch.h>
  41
  42 #include "intl.h"
  43 #include "main.h"
  44 #include "mimeview.h"
  45 #include "textview.h"
  46 #include "procmime.h"
  47 #include "summaryview.h"
  48 #include "menu.h"
  49 #include "filesel.h"
  50 #include "alertpanel.h"
  51 #include "inputdialog.h"
  52 #include "utils.h"
  53 #include "gtkutils.h"
  54 #include "prefs_common.h"
  55 #include "rfc2015.h"
  56
  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_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 gint mimeview_button_pressed     (GtkWidget      *widget,
  87                                          GdkEventButton *event,
  88                                          MimeView       *mimeview);
  89 static gint 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_save_all           (MimeView       *mimeview);
 103 static void mimeview_launch             (MimeView       *mimeview);
 104 static void mimeview_open_with          (MimeView       *mimeview);
 105 static void mimeview_view_file          (const gchar    *filename,
 106                                          MimeInfo       *partinfo,
 107                                          const gchar    *cmdline);
 108
 109 static GtkItemFactoryEntry mimeview_popup_entries[] =
 110 {
 111         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 112         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 113         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 114         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 115         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 116 #if USE_GPGME
 117         ,
 118         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 119 #endif
 120 };
 121
 122 static GtkTargetEntry mimeview_mime_types[] =
 123 {
 124         {"text/uri-list", 0, 0}
 125 };
 126
 127 GSList *mimeviewer_factories;
 128 GSList *mimeviews;
 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         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 202
 203         n_entries = sizeof(mimeview_popup_entries) /
 204                 sizeof(mimeview_popup_entries[0]);
 205         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 206                                       "<MimeView>", &popupfactory, mimeview);
 207
 208         mimeview->notebook     = notebook;
 209         mimeview->vbox         = vbox;
 210         mimeview->paned        = paned;
 211         mimeview->scrolledwin  = scrolledwin;
 212         mimeview->ctree        = ctree;
 213         mimeview->mime_vbox    = mime_vbox;
 214         mimeview->popupmenu    = popupmenu;
 215         mimeview->popupfactory = popupfactory;
 216         mimeview->type         = -1;
 217
 218         mimeviews = g_slist_prepend(mimeviews, mimeview);
 219
 220         return mimeview;
 221 }
 222
 223 void mimeview_init(MimeView *mimeview)
 224 {
 225 }
 226
 227 /*
 228  * Check whether the message is OpenPGP signed
 229  */
 230 #if USE_GPGME
 231 static gboolean mimeview_is_signed(MimeView *mimeview)
 232 {
 233         MimeInfo *partinfo = NULL;
 234
 235         debug_print("mimeview_is signed of %p\n", mimeview);
 236
 237         if (!mimeview) return FALSE;
 238         if (!mimeview->opened) return FALSE;
 239
 240         debug_print("mimeview_is_signed: open\n" );
 241
 242         if (!mimeview->file) return FALSE;
 243
 244         debug_print("mimeview_is_signed: file\n" );
 245
 246         partinfo = gtk_ctree_node_get_row_data
 247                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 248         g_return_val_if_fail(partinfo != NULL, FALSE);
 249
 250         /* walk the tree and see whether there is a signature somewhere */
 251         do {
 252                 if (rfc2015_has_signature(partinfo))
 253                         return TRUE;
 254         } while ((partinfo = partinfo->parent) != NULL);
 255
 256         debug_print("mimeview_is_signed: FALSE\n" );
 257
 258         return FALSE;
 259 }
 260
 261 static void set_unchecked_signature(MimeInfo *mimeinfo)
 262 {
 263         MimeInfo *sig_partinfo;
 264
 265         sig_partinfo = rfc2015_find_signature(mimeinfo);
 266         if (sig_partinfo == NULL) return;
 267
 268         g_free(sig_partinfo->sigstatus);
 269         sig_partinfo->sigstatus =
 270                 g_strdup(_("Right-click here to verify the signature"));
 271
 272         g_free(sig_partinfo->sigstatus_full);
 273         sig_partinfo->sigstatus_full = NULL;
 274 }
 275 #endif /* USE_GPGME */
 276
 277 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 278                            const gchar *file)
 279 {
 280         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 281         GtkCTreeNode *node;
 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         mimeview->file = g_strdup(file);
 293
 294 #if USE_GPGME
 295         if (prefs_common.auto_check_signatures && gpg_started) {
 296                 if ((fp = fopen(file, "rb")) == NULL) {
 297                         FILE_OP_ERROR(file, "fopen");
 298                         return;
 299                 }
 300                 rfc2015_check_signature(mimeinfo, fp);
 301                 fclose(fp);
 302         } else
 303                 set_unchecked_signature(mimeinfo);
 304 #endif
 305
 306         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 307                                          mimeview);
 308
 309         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 310
 311         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 312                                            mimeview_selected, mimeview);
 313
 314         /* search first text part */
 315         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 316              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 317                 MimeInfo *partinfo;
 318
 319                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 320                 if (partinfo &&
 321                     (partinfo->mime_type == MIME_TEXT ||
 322                      partinfo->mime_type == MIME_TEXT_HTML))
 323                         break;
 324         }
 325         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 326
 327         if (!node)
 328                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 329
 330         if (node) {
 331                 gtk_ctree_select(ctree, node);
 332                 gtkut_ctree_set_focus_row(ctree, node);
 333                 gtk_widget_grab_focus(mimeview->ctree);
 334         }
 335 }
 336
 337 void mimeview_destroy(MimeView *mimeview)
 338 {
 339         GSList *cur;
 340
 341         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 342                 MimeViewer *viewer = (MimeViewer *) cur->data;
 343                 viewer->destroy_viewer(viewer);
 344         }
 345         g_slist_free(mimeview->viewers);
 346
 347         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 348         g_free(mimeview->file);
 349         g_free(mimeview);
 350
 351         mimeviews = g_slist_remove(mimeviews, mimeview);
 352 }
 353
 354 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 355 {
 356         if (gtk_notebook_get_current_page
 357                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 358                 return NULL;
 359
 360         return gtk_ctree_node_get_row_data
 361                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 362 }
 363
 364 static void mimeview_set_multipart_tree(MimeView *mimeview,
 365                                         MimeInfo *mimeinfo,
 366                                         GtkCTreeNode *parent)
 367 {
 368         GtkCTreeNode *node;
 369
 370         g_return_if_fail(mimeinfo != NULL);
 371
 372         if (mimeinfo->children)
 373                 mimeinfo = mimeinfo->children;
 374
 375         while (mimeinfo != NULL) {
 376                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 377
 378                 if (mimeinfo->children)
 379                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 380                 else if (mimeinfo->sub &&
 381                          mimeinfo->sub->mime_type != MIME_TEXT &&
 382                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 383                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 384                                                     node);
 385                 mimeinfo = mimeinfo->next;
 386         }
 387 }
 388
 389 static gchar *get_part_name(MimeInfo *partinfo)
 390 {
 391 #if USE_GPGME
 392         if (partinfo->sigstatus)
 393                 return partinfo->sigstatus;
 394         else
 395 #endif
 396         if (partinfo->name)
 397                 return partinfo->name;
 398         else if (partinfo->filename)
 399                 return partinfo->filename;
 400         else if (partinfo->description)
 401                 return partinfo->description;
 402         else
 403                 return "";
 404 }
 405
 406 static gchar *get_part_description(MimeInfo *partinfo)
 407 {
 408         if (partinfo->description)
 409                 return partinfo->description;
 410         else if (partinfo->name)
 411                 return partinfo->name;
 412         else if (partinfo->filename)
 413                 return partinfo->filename;
 414         else
 415                 return "";
 416 }
 417
 418 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 419                                           MimeInfo *partinfo,
 420                                           GtkCTreeNode *parent)
 421 {
 422         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 423         GtkCTreeNode *node;
 424         gchar *str[N_MIMEVIEW_COLS];
 425
 426         str[COL_MIMETYPE] =
 427                 partinfo->content_type ? partinfo->content_type : "";
 428         str[COL_SIZE] = to_human_readable(partinfo->size);
 429         if (prefs_common.attach_desc)
 430                 str[COL_NAME] = get_part_description(partinfo);
 431         else
 432                 str[COL_NAME] = get_part_name(partinfo);
 433
 434         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 435                                      NULL, NULL, NULL, NULL,
 436                                      FALSE, TRUE);
 437         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 438
 439         return node;
 440 }
 441
 442 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 443 {
 444         FILE *fp;
 445         const gchar *fname;
 446 #if USE_GPGME
 447         MimeInfo *pi;
 448 #endif
 449
 450         if (!partinfo) return;
 451
 452 #if USE_GPGME
 453         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 454                 ;
 455         fname = pi ? pi->plaintextfile : mimeview->file;
 456 #else
 457         fname = mimeview->file;
 458 #endif /* USE_GPGME */
 459         if (!fname) return;
 460
 461         if ((fp = fopen(fname, "rb")) == NULL) {
 462                 FILE_OP_ERROR(fname, "fopen");
 463                 return;
 464         }
 465
 466         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 467                 FILE_OP_ERROR(mimeview->file, "fseek");
 468                 fclose(fp);
 469                 return;
 470         }
 471
 472         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 473         textview_show_part(mimeview->textview, partinfo, fp);
 474
 475         fclose(fp);
 476 }
 477
 478 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 479 {
 480         GSList *cur;
 481         MimeViewerFactory *factory = NULL;
 482         MimeViewer *viewer = NULL;
 483
 484         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 485                 MimeViewerFactory *curfactory = cur->data;
 486
 487                 if(!fnmatch(curfactory->content_type, content_type, 0)) {
 488                         factory = curfactory;
 489                         break;
 490                 }
 491         }
 492         if (factory == NULL)
 493                 return NULL;
 494
 495         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 496                 MimeViewer *curviewer = cur->data;
 497
 498                 if (curviewer->factory == factory)
 499                         return curviewer;
 500         }
 501         viewer = factory->create_viewer();
 502         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 503
 504         return viewer;
 505 }
 506
 507 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 508 {
 509         gchar *content_type = NULL;
 510         MimeViewer *viewer = NULL;
 511
 512         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 513             (partinfo->name != NULL)) {
 514                 content_type = procmime_get_mime_type(partinfo->name);
 515         } else {
 516                 content_type = g_strdup(partinfo->content_type);
 517         }
 518
 519         if (content_type != NULL) {
 520                 viewer = get_viewer_for_content_type(mimeview, content_type);
 521                 g_free(content_type);
 522         }
 523
 524         return viewer;
 525 }
 526
 527 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 528 {
 529         MimeViewer *viewer;
 530
 531         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 532         if (viewer == NULL) {
 533                 if (mimeview->mimeviewer != NULL)
 534                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 535                 mimeview->mimeviewer = NULL;
 536                 return FALSE;
 537         }
 538
 539         if (mimeview->mimeviewer != viewer) {
 540                 if (mimeview->mimeviewer != NULL)
 541                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 542                 mimeview->mimeviewer = viewer;
 543                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 544         }
 545         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 546
 547         return TRUE;
 548 }
 549
 550 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 551 {
 552         TextView  *textview  = mimeview->textview;
 553         GList *children;
 554
 555         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 556             (mimeview->type == type)) return;
 557
 558         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 559         if (children) {
 560                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 561                                        GTK_WIDGET(children->data));
 562                 g_list_free(children);
 563         }
 564
 565         switch (type) {
 566         case MIMEVIEW_TEXT:
 567                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 568                                   GTK_WIDGET_PTR(textview));
 569                 break;
 570         case MIMEVIEW_VIEWER:
 571                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 572                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
 573                 break;
 574         default:
 575                 return;
 576         }
 577
 578         mimeview->type = type;
 579 }
 580
 581 static void mimeview_clear(MimeView *mimeview)
 582 {
 583         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 584
 585         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 586         mimeview->mimeinfo = NULL;
 587
 588         gtk_clist_clear(clist);
 589         textview_clear(mimeview->textview);
 590         if (mimeview->mimeviewer != NULL)
 591                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 592
 593         mimeview->opened = NULL;
 594
 595         g_free(mimeview->file);
 596         mimeview->file = NULL;
 597
 598         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 599 }
 600
 601 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 602                               MimeView *mimeview)
 603 {
 604         MimeInfo *partinfo;
 605
 606         if (mimeview->opened == node) return;
 607         mimeview->opened = node;
 608         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 609
 610         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 611         if (!partinfo) return;
 612
 613         /* ungrab the mouse event */
 614         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 615                 gtk_grab_remove(GTK_WIDGET(ctree));
 616                 if (gdk_pointer_is_grabbed())
 617                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 618         }
 619
 620         mimeview->textview->default_text = FALSE;
 621
 622         if (!mimeview_show_part(mimeview, partinfo)) {
 623                 switch (partinfo->mime_type) {
 624                 case MIME_TEXT:
 625                 case MIME_TEXT_HTML:
 626                 case MIME_TEXT_ENRICHED:
 627                 case MIME_MESSAGE_RFC822:
 628                 case MIME_MULTIPART:
 629                         mimeview_show_message_part(mimeview, partinfo);
 630
 631                         break;
 632                 default:
 633                         mimeview->textview->default_text = TRUE;
 634                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 635 #if USE_GPGME
 636                         if (g_strcasecmp(partinfo->content_type,
 637                                          "application/pgp-signature") == 0)
 638                                 textview_show_signature_part(mimeview->textview,
 639                                                              partinfo);
 640                         else
 641 #endif
 642                                 textview_show_mime_part(mimeview->textview, partinfo);
 643                         break;
 644                 }
 645         }
 646 }
 647
 648 static void mimeview_start_drag(GtkWidget *widget, gint button,
 649                                 GdkEvent *event, MimeView *mimeview)
 650 {
 651         GtkTargetList *list;
 652         GdkDragContext *context;
 653         MimeInfo *partinfo;
 654
 655         g_return_if_fail(mimeview != NULL);
 656
 657         partinfo = mimeview_get_selected_part(mimeview);
 658         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 659
 660         list = gtk_target_list_new(mimeview_mime_types, 1);
 661         context = gtk_drag_begin(widget, list,
 662                                  GDK_ACTION_COPY, button, event);
 663         gtk_drag_set_icon_default(context);
 664 }
 665
 666 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 667                                     MimeView *mimeview)
 668 {
 669         GtkCList *clist = GTK_CLIST(widget);
 670         MimeInfo *partinfo;
 671         gint row, column;
 672
 673         if (!event) return FALSE;
 674
 675         if (event->button == 2 || event->button == 3) {
 676                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 677                                                   &row, &column))
 678                         return FALSE;
 679                 gtk_clist_unselect_all(clist);
 680                 gtk_clist_select_row(clist, row, column);
 681                 gtkut_clist_set_focus_row(clist, row);
 682         }
 683
 684         if (event->button == 2 ||
 685             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 686                 /* call external program for image, audio or html */
 687                 mimeview_launch(mimeview);
 688         } else if (event->button == 3) {
 689                 partinfo = mimeview_get_selected_part(mimeview);
 690                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 691                                  partinfo->mime_type == MIME_TEXT_HTML ||
 692                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 693                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 694                                  partinfo->mime_type == MIME_IMAGE ||
 695                                  partinfo->mime_type == MIME_MULTIPART))
 696                         menu_set_sensitive(mimeview->popupfactory,
 697                                            "/Display as text", FALSE);
 698                 else
 699                         menu_set_sensitive(mimeview->popupfactory,
 700                                            "/Display as text", TRUE);
 701                 if (partinfo &&
 702                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 703                         menu_set_sensitive(mimeview->popupfactory,
 704                                            "/Open", FALSE);
 705                 else
 706                         menu_set_sensitive(mimeview->popupfactory,
 707                                            "/Open", TRUE);
 708
 709 #if USE_GPGME
 710                 menu_set_sensitive(mimeview->popupfactory,
 711                                    "/Check signature",
 712                                    mimeview_is_signed(mimeview));
 713 #endif
 714
 715                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 716                                NULL, NULL, NULL, NULL,
 717                                event->button, event->time);
 718         }
 719
 720         return TRUE;
 721 }
 722
 723 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 724 {
 725         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 726 }
 727
 728 #define BREAK_ON_MODIFIER_KEY() \
 729         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 730
 731 #define KEY_PRESS_EVENT_STOP() \
 732         if (gtk_signal_n_emissions_by_name \
 733                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 734                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 735                                              "key_press_event"); \
 736         }
 737
 738 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 739                                  MimeView *mimeview)
 740 {
 741         SummaryView *summaryview;
 742         GtkCTree *ctree = GTK_CTREE(widget);
 743         GtkCTreeNode *node;
 744
 745         if (!event) return FALSE;
 746         if (!mimeview->opened) return FALSE;
 747
 748         switch (event->keyval) {
 749         case GDK_space:
 750                 if (textview_scroll_page(mimeview->textview, FALSE))
 751                         return TRUE;
 752
 753                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 754                 if (node) {
 755                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 756                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 757                         return TRUE;
 758                 }
 759                 break;
 760         case GDK_BackSpace:
 761                 textview_scroll_page(mimeview->textview, TRUE);
 762                 return TRUE;
 763         case GDK_Return:
 764                 textview_scroll_one_line(mimeview->textview,
 765                                          (event->state & GDK_MOD1_MASK) != 0);
 766                 return TRUE;
 767         case GDK_n:
 768         case GDK_N:
 769                 BREAK_ON_MODIFIER_KEY();
 770                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 771                 KEY_PRESS_EVENT_STOP();
 772
 773                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 774                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 775                 return TRUE;
 776         case GDK_p:
 777         case GDK_P:
 778                 BREAK_ON_MODIFIER_KEY();
 779                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 780                 KEY_PRESS_EVENT_STOP();
 781
 782                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 783                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 784                 return TRUE;
 785         case GDK_y:
 786                 BREAK_ON_MODIFIER_KEY();
 787                 KEY_PRESS_EVENT_STOP();
 788                 mimeview_save_as(mimeview);
 789                 return TRUE;
 790         case GDK_t:
 791                 BREAK_ON_MODIFIER_KEY();
 792                 KEY_PRESS_EVENT_STOP();
 793                 mimeview_display_as_text(mimeview);
 794                 return TRUE;
 795         case GDK_l:
 796                 BREAK_ON_MODIFIER_KEY();
 797                 KEY_PRESS_EVENT_STOP();
 798                 mimeview_launch(mimeview);
 799                 return TRUE;
 800         default:
 801                 break;
 802         }
 803
 804         if (!mimeview->messageview->mainwin) return FALSE;
 805         summaryview = mimeview->messageview->mainwin->summaryview;
 806         summary_pass_key_press_event(summaryview, event);
 807         return TRUE;
 808 }
 809
 810 static void mimeview_drag_data_get(GtkWidget        *widget,
 811                                    GdkDragContext   *drag_context,
 812                                    GtkSelectionData *selection_data,
 813                                    guint             info,
 814                                    guint             time,
 815                                    MimeView         *mimeview)
 816 {
 817         gchar *filename, *uriname;
 818         MimeInfo *partinfo;
 819
 820         if (!mimeview->opened) return;
 821         if (!mimeview->file) return;
 822
 823         partinfo = mimeview_get_selected_part(mimeview);
 824         if (!partinfo) return;
 825         if (!partinfo->filename && !partinfo->name) return;
 826
 827         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 828         filename = g_basename(filename);
 829         if (*filename == '\0') return;
 830
 831         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 832                                filename, NULL);
 833
 834         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 835                 alertpanel_error
 836                         (_("Can't save the part of multipart message."));
 837
 838         uriname = g_strconcat("file:/", filename, NULL);
 839         gtk_selection_data_set(selection_data, selection_data->target, 8,
 840                                uriname, strlen(uriname));
 841
 842         g_free(uriname);
 843         g_free(filename);
 844 }
 845
 846 static void mimeview_save_all(MimeView *mimeview)
 847 {
 848         gchar *dirname;
 849         gchar *defname = NULL;
 850         MimeInfo *partinfo;
 851         MimeInfo *attachment;
 852         gchar buf[1024];
 853
 854         if (!mimeview->opened) return;
 855         if (!mimeview->file) return;
 856
 857         partinfo = mimeview_get_selected_part(mimeview);
 858         g_return_if_fail(partinfo != NULL);
 859
 860         dirname = filesel_select_file(_("Save as"), defname);
 861         if (!dirname) return;
 862
 863         /* return to first children */
 864         if (!partinfo->parent->children) return;  /* multipart container? */
 865         attachment = partinfo->parent->children->next;
 866         /* for each attachment, extract it in the selected dir. */
 867         while (attachment != NULL) {
 868                 static guint subst_cnt = 1;
 869                 gchar *attachdir;
 870                 gchar *attachname = g_strdup(get_part_name(attachment));
 871                 AlertValue aval = G_ALERTDEFAULT;
 872                 gchar *res;
 873
 874                 if (!attachname || !strlen(attachname))
 875                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 876                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 877                 g_snprintf(buf, sizeof(buf), "%s%s",
 878                            dirname,
 879                            (attachname[0] == G_DIR_SEPARATOR)
 880                            ? &attachname[1]
 881                            : attachname);
 882                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 883                 attachdir = g_dirname(buf);
 884                 make_dir_hier(attachdir);
 885                 g_free(attachdir);
 886
 887                 if (is_file_exist(buf)) {
 888                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 889                                               attachname);
 890                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 891                                           _("Cancel"), NULL);
 892                         g_free(res);
 893                 }
 894                 g_free(attachname);
 895
 896                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 897                         alertpanel_error(_("Can't save the part of multipart message."));
 898                 attachment = attachment->next;
 899         }
 900 }
 901
 902 static void mimeview_display_as_text(MimeView *mimeview)
 903 {
 904         MimeInfo *partinfo;
 905
 906         if (!mimeview->opened) return;
 907
 908         partinfo = mimeview_get_selected_part(mimeview);
 909         g_return_if_fail(partinfo != NULL);
 910         mimeview_show_message_part(mimeview, partinfo);
 911 }
 912
 913 static void mimeview_save_as(MimeView *mimeview)
 914 {
 915         gchar *filename;
 916         gchar *defname = NULL;
 917         MimeInfo *partinfo;
 918         gchar *res;
 919
 920         if (!mimeview->opened) return;
 921         if (!mimeview->file) return;
 922
 923         partinfo = mimeview_get_selected_part(mimeview);
 924         g_return_if_fail(partinfo != NULL);
 925
 926         if (partinfo->filename)
 927                 defname = partinfo->filename;
 928         else if (partinfo->name) {
 929                 Xstrdup_a(defname, partinfo->name, return);
 930                 subst_for_filename(defname);
 931         }
 932
 933         filename = filesel_select_file(_("Save as"), defname);
 934         if (!filename) return;
 935         if (is_file_exist(filename)) {
 936                 AlertValue aval;
 937                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 938                                       filename);
 939                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 940                                   _("Cancel"), NULL);
 941                 g_free(res);
 942                 if (G_ALERTDEFAULT != aval) return;
 943         }
 944
 945         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 946                 alertpanel_error
 947                         (_("Can't save the part of multipart message."));
 948 }
 949
 950 static void mimeview_launch(MimeView *mimeview)
 951 {
 952         MimeInfo *partinfo;
 953         gchar *filename;
 954
 955         if (!mimeview->opened) return;
 956         if (!mimeview->file) return;
 957
 958         partinfo = mimeview_get_selected_part(mimeview);
 959         g_return_if_fail(partinfo != NULL);
 960
 961         filename = procmime_get_tmp_file_name(partinfo);
 962
 963         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 964                 alertpanel_error
 965                         (_("Can't save the part of multipart message."));
 966         else
 967                 mimeview_view_file(filename, partinfo, NULL);
 968
 969         g_free(filename);
 970 }
 971
 972 static void mimeview_open_with(MimeView *mimeview)
 973 {
 974         MimeInfo *partinfo;
 975         gchar *filename;
 976         gchar *cmd;
 977
 978         if (!mimeview->opened) return;
 979         if (!mimeview->file) return;
 980
 981         partinfo = mimeview_get_selected_part(mimeview);
 982         g_return_if_fail(partinfo != NULL);
 983
 984         filename = procmime_get_tmp_file_name(partinfo);
 985
 986         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 987                 alertpanel_error
 988                         (_("Can't save the part of multipart message."));
 989                 g_free(filename);
 990                 return;
 991         }
 992
 993         if (!prefs_common.mime_open_cmd_history)
 994                 prefs_common.mime_open_cmd_history =
 995                         add_history(NULL, prefs_common.mime_open_cmd);
 996
 997         cmd = input_dialog_combo
 998                 (_("Open with"),
 999                  _("Enter the command line to open file:\n"
1000                    "(`%s' will be replaced with file name)"),
1001                  prefs_common.mime_open_cmd,
1002                  prefs_common.mime_open_cmd_history,
1003                  TRUE);
1004         if (cmd) {
1005                 mimeview_view_file(filename, partinfo, cmd);
1006                 g_free(prefs_common.mime_open_cmd);
1007                 prefs_common.mime_open_cmd = cmd;
1008                 prefs_common.mime_open_cmd_history =
1009                         add_history(prefs_common.mime_open_cmd_history, cmd);
1010         }
1011
1012         g_free(filename);
1013 }
1014
1015 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1016                                const gchar *cmdline)
1017 {
1018         static gchar *default_image_cmdline = "display '%s'";
1019         static gchar *default_audio_cmdline = "play '%s'";
1020         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1021         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1022         gchar buf[1024];
1023         gchar m_buf[1024];
1024         const gchar *cmd;
1025         const gchar *def_cmd;
1026         const gchar *p;
1027
1028         if (cmdline) {
1029                 cmd = cmdline;
1030                 def_cmd = NULL;
1031         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1032                 return;
1033         } else if (MIME_IMAGE == partinfo->mime_type) {
1034                 cmd = prefs_common.mime_image_viewer;
1035                 def_cmd = default_image_cmdline;
1036         } else if (MIME_AUDIO == partinfo->mime_type) {
1037                 cmd = prefs_common.mime_audio_player;
1038                 def_cmd = default_audio_cmdline;
1039         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1040                 cmd = prefs_common.uri_cmd;
1041                 def_cmd = default_html_cmdline;
1042         } else {
1043                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1044                            partinfo->content_type, "%s");
1045                 cmd = m_buf;
1046                 def_cmd = NULL;
1047         }
1048
1049         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1050             !strchr(p + 2, '%'))
1051                 g_snprintf(buf, sizeof(buf), cmd, filename);
1052         else {
1053                 if (cmd)
1054                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1055                 if (def_cmd)
1056                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1057                 else
1058                         return;
1059         }
1060
1061         execute_command_line(buf, TRUE);
1062 }
1063
1064 #if USE_GPGME
1065 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1066                              gpointer data)
1067 {
1068         MimeInfo *partinfo;
1069         gchar *part_name;
1070
1071         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1072         g_return_if_fail(partinfo != NULL);
1073
1074         part_name = get_part_name(partinfo);
1075         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1076 }
1077
1078 static void mimeview_update_names(MimeView *mimeview)
1079 {
1080         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1081
1082         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1083 }
1084
1085 static void mimeview_update_signature_info(MimeView *mimeview)
1086 {
1087         MimeInfo *partinfo;
1088
1089         if (!mimeview) return;
1090         if (!mimeview->opened) return;
1091
1092         partinfo = mimeview_get_selected_part(mimeview);
1093         if (!partinfo) return;
1094
1095         if (g_strcasecmp(partinfo->content_type,
1096                          "application/pgp-signature") == 0) {
1097                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1098                 textview_show_signature_part(mimeview->textview, partinfo);
1099         }
1100 }
1101
1102 void mimeview_check_signature(MimeView *mimeview)
1103 {
1104         MimeInfo *mimeinfo;
1105         FILE *fp;
1106
1107         g_return_if_fail (mimeview_is_signed(mimeview));
1108         g_return_if_fail (gpg_started);
1109
1110         mimeinfo = gtk_ctree_node_get_row_data
1111                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1112         g_return_if_fail(mimeinfo != NULL);
1113         g_return_if_fail(mimeview->file != NULL);
1114
1115         while (mimeinfo->parent)
1116                 mimeinfo = mimeinfo->parent;
1117
1118         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1119                 FILE_OP_ERROR(mimeview->file, "fopen");
1120                 return;
1121         }
1122
1123         rfc2015_check_signature(mimeinfo, fp);
1124         fclose(fp);
1125
1126         mimeview_update_names(mimeview);
1127         mimeview_update_signature_info(mimeview);
1128
1129         textview_show_message(mimeview->messageview->textview, mimeinfo,
1130                               mimeview->file);
1131 }
1132 #endif /* USE_GPGME */
1133
1134 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1135 {
1136         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1137 }
1138
1139 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1140 {
1141         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1142 }
1143
1144 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1145 {
1146         GSList *mimeview_list, *viewer_list;
1147
1148         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1149                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1150
1151                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1152                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1153                         mimeview->mimeviewer = NULL;
1154                 }
1155
1156                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1157                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1158
1159                         mimeviewer->destroy_viewer(mimeviewer);
1160                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1161                 }
1162         }
1163
1164         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1165 }