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
  40 #ifndef HAVE_APACHE_FNMATCH
  41 /* kludge: apache's fnmatch clashes with <regex.h>, don't include
  42  * fnmatch.h */
  43 #include <fnmatch.h>
  44 #endif
  45
  46 #include "intl.h"
  47 #include "main.h"
  48 #include "mimeview.h"
  49 #include "textview.h"
  50 #include "procmime.h"
  51 #include "summaryview.h"
  52 #include "menu.h"
  53 #include "filesel.h"
  54 #include "alertpanel.h"
  55 #include "inputdialog.h"
  56 #include "utils.h"
  57 #include "gtkutils.h"
  58 #include "prefs_common.h"
  59 #include "rfc2015.h"
  60 #include "stock_pixmap.h"
  61
  62 typedef enum
  63 {
  64         COL_MIMETYPE = 0,
  65         COL_SIZE     = 1,
  66         COL_NAME     = 2
  67 } MimeViewColumnPos;
  68
  69 #define N_MIMEVIEW_COLS 3
  70
  71 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  72                                                  MimeInfo       *mimeinfo,
  73                                                  GtkCTreeNode   *parent);
  74 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  75                                                  MimeInfo       *partinfo,
  76                                                  GtkCTreeNode   *parent);
  77 static void mimeview_show_message_part          (MimeView       *mimeview,
  78                                                  MimeInfo       *partinfo);
  79 static void mimeview_change_view_type           (MimeView       *mimeview,
  80                                                  MimeViewType    type);
  81 static void mimeview_clear                      (MimeView       *mimeview);
  82
  83 static void mimeview_selected           (GtkCTree       *ctree,
  84                                          GtkCTreeNode   *node,
  85                                          gint            column,
  86                                          MimeView       *mimeview);
  87 static void mimeview_start_drag         (GtkWidget      *widget,
  88                                          gint            button,
  89                                          GdkEvent       *event,
  90                                          MimeView       *mimeview);
  91 static gint mimeview_button_pressed     (GtkWidget      *widget,
  92                                          GdkEventButton *event,
  93                                          MimeView       *mimeview);
  94 static gint mimeview_key_pressed        (GtkWidget      *widget,
  95                                          GdkEventKey    *event,
  96                                          MimeView       *mimeview);
  97
  98 static void mimeview_drag_data_get      (GtkWidget        *widget,
  99                                          GdkDragContext   *drag_context,
 100                                          GtkSelectionData *selection_data,
 101                                          guint             info,
 102                                          guint             time,
 103                                          MimeView         *mimeview);
 104
 105 static void mimeview_display_as_text    (MimeView       *mimeview);
 106 static void mimeview_save_as            (MimeView       *mimeview);
 107 static void mimeview_save_all           (MimeView       *mimeview);
 108 static void mimeview_launch             (MimeView       *mimeview);
 109 static void mimeview_open_with          (MimeView       *mimeview);
 110 static void mimeview_view_file          (const gchar    *filename,
 111                                          MimeInfo       *partinfo,
 112                                          const gchar    *cmdline);
 113
 114 static GtkItemFactoryEntry mimeview_popup_entries[] =
 115 {
 116         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 117         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 118         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 119         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 120         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 121 #if USE_GPGME
 122         ,
 123         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 124 #endif
 125 };
 126
 127 static GtkTargetEntry mimeview_mime_types[] =
 128 {
 129         {"text/uri-list", 0, 0}
 130 };
 131
 132 GSList *mimeviewer_factories;
 133 GSList *mimeviews;
 134
 135 MimeView *mimeview_create(MainWindow *mainwin)
 136 {
 137         MimeView *mimeview;
 138
 139         GtkWidget *notebook;
 140         GtkWidget *vbox;
 141         GtkWidget *paned;
 142         GtkWidget *scrolledwin;
 143         GtkWidget *ctree;
 144         GtkWidget *mime_notebook;
 145         GtkWidget *popupmenu;
 146         GtkWidget *icon;
 147         GtkItemFactory *popupfactory;
 148         gchar *titles[N_MIMEVIEW_COLS];
 149         gint n_entries;
 150         gint i;
 151
 152         debug_print("Creating MIME view...\n");
 153         mimeview = g_new0(MimeView, 1);
 154
 155         titles[COL_MIMETYPE] = _("MIME Type");
 156         titles[COL_SIZE]     = _("Size");
 157         titles[COL_NAME]     = _("Name");
 158
 159         notebook = gtk_notebook_new();
 160         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 161
 162         vbox = gtk_vbox_new(FALSE, 0);
 163         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 164         icon = stock_pixmap_widget(mainwin->window, STOCK_PIXMAP_MESSAGEVIEW_TEXT);
 165         gtk_widget_show(icon);
 166         gtk_notebook_set_tab_label(GTK_NOTEBOOK(notebook), vbox, icon);
 167
 168         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 169         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 170                                        GTK_POLICY_AUTOMATIC,
 171                                        GTK_POLICY_ALWAYS);
 172         gtk_widget_set_usize(scrolledwin, -1, 80);
 173
 174         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 175         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 176         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 177         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 178                                            GTK_JUSTIFY_RIGHT);
 179         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 180         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 181         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 182                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 183                                        GTK_CAN_FOCUS);
 184         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 185
 186         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 187                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 188         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 189                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 190         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 191                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 192         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 193                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 194         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 195                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 196
 197         mime_notebook = gtk_notebook_new();
 198         gtk_widget_show(mime_notebook);
 199         GTK_WIDGET_UNSET_FLAGS(mime_notebook, GTK_CAN_FOCUS);
 200         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
 201         gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
 202
 203         paned = gtk_vpaned_new();
 204         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 205         gtk_paned_add2(GTK_PANED(paned), mime_notebook);
 206         gtk_container_add(GTK_CONTAINER(notebook), paned);
 207         icon = stock_pixmap_widget(mainwin->window, STOCK_PIXMAP_CLIP);
 208         gtk_widget_show(icon);
 209         gtk_notebook_set_tab_label(GTK_NOTEBOOK(notebook), paned, icon);
 210         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(notebook), GTK_POS_RIGHT);
 211
 212         gtk_widget_show_all(notebook);
 213
 214         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 215
 216         n_entries = sizeof(mimeview_popup_entries) /
 217                 sizeof(mimeview_popup_entries[0]);
 218         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 219                                       "<MimeView>", &popupfactory, mimeview);
 220
 221         mimeview->notebook      = notebook;
 222         mimeview->vbox          = vbox;
 223         mimeview->paned         = paned;
 224         mimeview->scrolledwin   = scrolledwin;
 225         mimeview->ctree         = ctree;
 226         mimeview->mime_notebook = mime_notebook;
 227         mimeview->popupmenu     = popupmenu;
 228         mimeview->popupfactory  = popupfactory;
 229         mimeview->type          = -1;
 230
 231         mimeview->target_list   = gtk_target_list_new(mimeview_mime_types, 1);
 232
 233         mimeviews = g_slist_prepend(mimeviews, mimeview);
 234
 235         return mimeview;
 236 }
 237
 238 void mimeview_init(MimeView *mimeview)
 239 {
 240         textview_init(mimeview->textview);
 241
 242         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 243                 GTK_WIDGET_PTR(mimeview->textview));
 244 }
 245
 246 /*
 247  * Check whether the message is OpenPGP signed
 248  */
 249 #if USE_GPGME
 250 static gboolean mimeview_is_signed(MimeView *mimeview)
 251 {
 252         MimeInfo *partinfo = NULL;
 253
 254         debug_print("mimeview_is signed of %p\n", mimeview);
 255
 256         if (!mimeview) return FALSE;
 257         if (!mimeview->opened) return FALSE;
 258
 259         debug_print("mimeview_is_signed: open\n" );
 260
 261         if (!mimeview->file) return FALSE;
 262
 263         debug_print("mimeview_is_signed: file\n" );
 264
 265         partinfo = gtk_ctree_node_get_row_data
 266                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 267         g_return_val_if_fail(partinfo != NULL, FALSE);
 268
 269         /* walk the tree and see whether there is a signature somewhere */
 270         do {
 271                 if (rfc2015_has_signature(partinfo))
 272                         return TRUE;
 273         } while ((partinfo = partinfo->parent) != NULL);
 274
 275         debug_print("mimeview_is_signed: FALSE\n" );
 276
 277         return FALSE;
 278 }
 279
 280 static void set_unchecked_signature(MimeInfo *mimeinfo)
 281 {
 282         MimeInfo *sig_partinfo;
 283
 284         sig_partinfo = rfc2015_find_signature(mimeinfo);
 285         if (sig_partinfo == NULL) return;
 286
 287         g_free(sig_partinfo->sigstatus);
 288         sig_partinfo->sigstatus =
 289                 g_strdup(_("Right-click here to verify the signature"));
 290
 291         g_free(sig_partinfo->sigstatus_full);
 292         sig_partinfo->sigstatus_full = NULL;
 293 }
 294 #endif /* USE_GPGME */
 295
 296 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 297                            const gchar *file)
 298 {
 299         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 300         GtkCTreeNode *node;
 301         FILE *fp;
 302
 303         mimeview_clear(mimeview);
 304         textview_clear(mimeview->messageview->textview);
 305
 306         g_return_if_fail(file != NULL);
 307         g_return_if_fail(mimeinfo != NULL);
 308
 309         mimeview->mimeinfo = mimeinfo;
 310
 311         mimeview->file = g_strdup(file);
 312
 313 #if USE_GPGME
 314         if (prefs_common.auto_check_signatures && gpg_started) {
 315                 if ((fp = fopen(file, "rb")) == NULL) {
 316                         FILE_OP_ERROR(file, "fopen");
 317                         return;
 318                 }
 319                 rfc2015_check_signature(mimeinfo, fp);
 320                 fclose(fp);
 321         } else
 322                 set_unchecked_signature(mimeinfo);
 323 #endif
 324
 325         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 326                                          mimeview);
 327
 328         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 329
 330         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 331                                            mimeview_selected, mimeview);
 332
 333         /* search first text part */
 334         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 335              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 336                 MimeInfo *partinfo;
 337
 338                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 339                 if (partinfo &&
 340                     (partinfo->mime_type == MIME_TEXT ||
 341                      partinfo->mime_type == MIME_TEXT_HTML))
 342                         break;
 343         }
 344         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 345
 346         if (!node)
 347                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 348
 349         if (node) {
 350                 gtk_ctree_select(ctree, node);
 351                 gtkut_ctree_set_focus_row(ctree, node);
 352                 gtk_widget_grab_focus(mimeview->ctree);
 353         }
 354 }
 355
 356 void mimeview_destroy(MimeView *mimeview)
 357 {
 358         GSList *cur;
 359
 360         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 361                 MimeViewer *viewer = (MimeViewer *) cur->data;
 362                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 363                         GTK_WIDGET(viewer->get_widget(viewer)));
 364                 viewer->destroy_viewer(viewer);
 365         }
 366         g_slist_free(mimeview->viewers);
 367         gtk_target_list_unref(mimeview->target_list);
 368
 369         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 370         g_free(mimeview->file);
 371         g_free(mimeview);
 372
 373         mimeviews = g_slist_remove(mimeviews, mimeview);
 374 }
 375
 376 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 377 {
 378         if (gtk_notebook_get_current_page
 379                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 380                 return NULL;
 381
 382         return gtk_ctree_node_get_row_data
 383                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 384 }
 385
 386 static void mimeview_set_multipart_tree(MimeView *mimeview,
 387                                         MimeInfo *mimeinfo,
 388                                         GtkCTreeNode *parent)
 389 {
 390         GtkCTreeNode *node;
 391
 392         g_return_if_fail(mimeinfo != NULL);
 393
 394         if (mimeinfo->children)
 395                 mimeinfo = mimeinfo->children;
 396
 397         while (mimeinfo != NULL) {
 398                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 399
 400                 if (mimeinfo->children)
 401                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 402                 else if (mimeinfo->sub &&
 403                          mimeinfo->sub->mime_type != MIME_TEXT &&
 404                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 405                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 406                                                     node);
 407                 mimeinfo = mimeinfo->next;
 408         }
 409 }
 410
 411 static gchar *get_part_name(MimeInfo *partinfo)
 412 {
 413 #if USE_GPGME
 414         if (partinfo->sigstatus)
 415                 return partinfo->sigstatus;
 416         else
 417 #endif
 418         if (partinfo->name)
 419                 return partinfo->name;
 420         else if (partinfo->filename)
 421                 return partinfo->filename;
 422         else if (partinfo->description)
 423                 return partinfo->description;
 424         else
 425                 return "";
 426 }
 427
 428 static gchar *get_part_description(MimeInfo *partinfo)
 429 {
 430         if (partinfo->description)
 431                 return partinfo->description;
 432         else if (partinfo->name)
 433                 return partinfo->name;
 434         else if (partinfo->filename)
 435                 return partinfo->filename;
 436         else
 437                 return "";
 438 }
 439
 440 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 441                                           MimeInfo *partinfo,
 442                                           GtkCTreeNode *parent)
 443 {
 444         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 445         GtkCTreeNode *node;
 446         gchar *str[N_MIMEVIEW_COLS];
 447
 448         str[COL_MIMETYPE] =
 449                 partinfo->content_type ? partinfo->content_type : "";
 450         str[COL_SIZE] = to_human_readable(partinfo->size);
 451         if (prefs_common.attach_desc)
 452                 str[COL_NAME] = get_part_description(partinfo);
 453         else
 454                 str[COL_NAME] = get_part_name(partinfo);
 455
 456         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 457                                      NULL, NULL, NULL, NULL,
 458                                      FALSE, TRUE);
 459         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 460
 461         return node;
 462 }
 463
 464 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 465 {
 466         FILE *fp;
 467         const gchar *fname;
 468 #if USE_GPGME
 469         MimeInfo *pi;
 470 #endif
 471
 472         if (!partinfo) return;
 473
 474 #if USE_GPGME
 475         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 476                 ;
 477         fname = pi ? pi->plaintextfile : mimeview->file;
 478 #else
 479         fname = mimeview->file;
 480 #endif /* USE_GPGME */
 481         if (!fname) return;
 482
 483         if ((fp = fopen(fname, "rb")) == NULL) {
 484                 FILE_OP_ERROR(fname, "fopen");
 485                 return;
 486         }
 487
 488         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 489                 FILE_OP_ERROR(mimeview->file, "fseek");
 490                 fclose(fp);
 491                 return;
 492         }
 493
 494         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 495         textview_show_part(mimeview->textview, partinfo, fp);
 496
 497         fclose(fp);
 498 }
 499
 500 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 501 {
 502         GSList *cur;
 503         MimeViewerFactory *factory = NULL;
 504         MimeViewer *viewer = NULL;
 505
 506 /*
 507  * FNM_CASEFOLD is a GNU extension
 508  * if its not defined copy the string to the stack and
 509  * convert the copy to lower case
 510  */
 511 #ifndef FNM_CASEFOLD
 512 #define FNM_CASEFOLD 0
 513         Xstrdup_a(content_type, content_type, return NULL);
 514         g_strdown((gchar *)content_type);
 515 #endif
 516
 517         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 518                 MimeViewerFactory *curfactory = cur->data;
 519                 gint i = 0;
 520
 521                 while (curfactory->content_types[i] != NULL) {
 522                         debug_print("%s\n", curfactory->content_types[i]);
 523                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 524                                 factory = curfactory;
 525                                 break;
 526                         }
 527                         i++;
 528                 }
 529                 if (factory != NULL)
 530                         break;
 531         }
 532         if (factory == NULL)
 533                 return NULL;
 534
 535         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 536                 MimeViewer *curviewer = cur->data;
 537
 538                 if (curviewer->factory == factory)
 539                         return curviewer;
 540         }
 541         viewer = factory->create_viewer();
 542         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 543                 GTK_WIDGET(viewer->get_widget(viewer)));
 544
 545         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 546
 547         return viewer;
 548 }
 549
 550 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 551 {
 552         gchar *content_type = NULL;
 553         MimeViewer *viewer = NULL;
 554
 555         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 556             (partinfo->name != NULL)) {
 557                 content_type = procmime_get_mime_type(partinfo->name);
 558         } else {
 559                 content_type = g_strdup(partinfo->content_type);
 560         }
 561
 562         if (content_type != NULL) {
 563                 viewer = get_viewer_for_content_type(mimeview, content_type);
 564                 g_free(content_type);
 565         }
 566
 567         return viewer;
 568 }
 569
 570 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 571 {
 572         MimeViewer *viewer;
 573
 574         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 575         if (viewer == NULL) {
 576                 if (mimeview->mimeviewer != NULL)
 577                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 578                 mimeview->mimeviewer = NULL;
 579                 return FALSE;
 580         }
 581
 582         if (mimeview->mimeviewer != viewer) {
 583                 if (mimeview->mimeviewer != NULL)
 584                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 585                 mimeview->mimeviewer = viewer;
 586                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 587         }
 588         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 589
 590         return TRUE;
 591 }
 592
 593 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 594 {
 595         TextView  *textview  = mimeview->textview;
 596
 597         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 598             (mimeview->type == type)) return;
 599
 600         switch (type) {
 601         case MIMEVIEW_TEXT:
 602                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 603                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 604                         GTK_WIDGET_PTR(textview)));
 605                 break;
 606         case MIMEVIEW_VIEWER:
 607                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 608                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 609                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 610                 break;
 611         default:
 612                 return;
 613         }
 614
 615         mimeview->type = type;
 616 }
 617
 618 static void mimeview_clear(MimeView *mimeview)
 619 {
 620         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 621
 622         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 623         mimeview->mimeinfo = NULL;
 624
 625         gtk_clist_clear(clist);
 626         textview_clear(mimeview->textview);
 627         if (mimeview->mimeviewer != NULL)
 628                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 629
 630         mimeview->opened = NULL;
 631
 632         g_free(mimeview->file);
 633         mimeview->file = NULL;
 634
 635         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 636 }
 637
 638 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 639                               MimeView *mimeview)
 640 {
 641         MimeInfo *partinfo;
 642
 643         if (mimeview->opened == node) return;
 644         mimeview->opened = node;
 645         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 646
 647         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 648         if (!partinfo) return;
 649
 650         /* ungrab the mouse event */
 651         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 652                 gtk_grab_remove(GTK_WIDGET(ctree));
 653                 if (gdk_pointer_is_grabbed())
 654                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 655         }
 656
 657         mimeview->textview->default_text = FALSE;
 658
 659         if (!mimeview_show_part(mimeview, partinfo)) {
 660                 switch (partinfo->mime_type) {
 661                 case MIME_TEXT:
 662                 case MIME_TEXT_HTML:
 663                 case MIME_TEXT_ENRICHED:
 664                 case MIME_MESSAGE_RFC822:
 665                 case MIME_MULTIPART:
 666                         mimeview_show_message_part(mimeview, partinfo);
 667
 668                         break;
 669                 default:
 670                         mimeview->textview->default_text = TRUE;
 671                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 672 #if USE_GPGME
 673                         if (g_strcasecmp(partinfo->content_type,
 674                                          "application/pgp-signature") == 0)
 675                                 textview_show_signature_part(mimeview->textview,
 676                                                              partinfo);
 677                         else
 678 #endif
 679                                 textview_show_mime_part(mimeview->textview, partinfo);
 680                         break;
 681                 }
 682         }
 683 }
 684
 685 static void mimeview_start_drag(GtkWidget *widget, gint button,
 686                                 GdkEvent *event, MimeView *mimeview)
 687 {
 688         GdkDragContext *context;
 689         MimeInfo *partinfo;
 690
 691         g_return_if_fail(mimeview != NULL);
 692
 693         partinfo = mimeview_get_selected_part(mimeview);
 694         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 695
 696         context = gtk_drag_begin(widget, mimeview->target_list,
 697                                  GDK_ACTION_COPY, button, event);
 698         gtk_drag_set_icon_default(context);
 699 }
 700
 701 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 702                                     MimeView *mimeview)
 703 {
 704         GtkCList *clist = GTK_CLIST(widget);
 705         MimeInfo *partinfo;
 706         gint row, column;
 707
 708         if (!event) return FALSE;
 709
 710         if (event->button == 2 || event->button == 3) {
 711                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 712                                                   &row, &column))
 713                         return FALSE;
 714                 gtk_clist_unselect_all(clist);
 715                 gtk_clist_select_row(clist, row, column);
 716                 gtkut_clist_set_focus_row(clist, row);
 717         }
 718
 719         if (event->button == 2 ||
 720             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 721                 /* call external program for image, audio or html */
 722                 mimeview_launch(mimeview);
 723         } else if (event->button == 3) {
 724                 partinfo = mimeview_get_selected_part(mimeview);
 725                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 726                                  partinfo->mime_type == MIME_TEXT_HTML ||
 727                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 728                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 729                                  partinfo->mime_type == MIME_IMAGE ||
 730                                  partinfo->mime_type == MIME_MULTIPART))
 731                         menu_set_sensitive(mimeview->popupfactory,
 732                                            "/Display as text", FALSE);
 733                 else
 734                         menu_set_sensitive(mimeview->popupfactory,
 735                                            "/Display as text", TRUE);
 736                 if (partinfo &&
 737                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 738                         menu_set_sensitive(mimeview->popupfactory,
 739                                            "/Open", FALSE);
 740                 else
 741                         menu_set_sensitive(mimeview->popupfactory,
 742                                            "/Open", TRUE);
 743
 744 #if USE_GPGME
 745                 menu_set_sensitive(mimeview->popupfactory,
 746                                    "/Check signature",
 747                                    mimeview_is_signed(mimeview));
 748 #endif
 749
 750                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 751                                NULL, NULL, NULL, NULL,
 752                                event->button, event->time);
 753         }
 754
 755         return TRUE;
 756 }
 757
 758 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 759 {
 760         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 761 }
 762
 763 #define BREAK_ON_MODIFIER_KEY() \
 764         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 765
 766 #define KEY_PRESS_EVENT_STOP() \
 767         if (gtk_signal_n_emissions_by_name \
 768                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 769                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 770                                              "key_press_event"); \
 771         }
 772
 773 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 774                                  MimeView *mimeview)
 775 {
 776         SummaryView *summaryview;
 777         GtkCTree *ctree = GTK_CTREE(widget);
 778         GtkCTreeNode *node;
 779
 780         if (!event) return FALSE;
 781         if (!mimeview->opened) return FALSE;
 782
 783         switch (event->keyval) {
 784         case GDK_space:
 785                 if (textview_scroll_page(mimeview->textview, FALSE))
 786                         return TRUE;
 787
 788                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 789                 if (node) {
 790                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 791                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 792                         return TRUE;
 793                 }
 794                 break;
 795         case GDK_BackSpace:
 796                 textview_scroll_page(mimeview->textview, TRUE);
 797                 return TRUE;
 798         case GDK_Return:
 799                 textview_scroll_one_line(mimeview->textview,
 800                                          (event->state & GDK_MOD1_MASK) != 0);
 801                 return TRUE;
 802         case GDK_n:
 803         case GDK_N:
 804                 BREAK_ON_MODIFIER_KEY();
 805                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 806                 KEY_PRESS_EVENT_STOP();
 807
 808                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 809                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 810                 return TRUE;
 811         case GDK_p:
 812         case GDK_P:
 813                 BREAK_ON_MODIFIER_KEY();
 814                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 815                 KEY_PRESS_EVENT_STOP();
 816
 817                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 818                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 819                 return TRUE;
 820         case GDK_y:
 821                 BREAK_ON_MODIFIER_KEY();
 822                 KEY_PRESS_EVENT_STOP();
 823                 mimeview_save_as(mimeview);
 824                 return TRUE;
 825         case GDK_t:
 826                 BREAK_ON_MODIFIER_KEY();
 827                 KEY_PRESS_EVENT_STOP();
 828                 mimeview_display_as_text(mimeview);
 829                 return TRUE;
 830         case GDK_l:
 831                 BREAK_ON_MODIFIER_KEY();
 832                 KEY_PRESS_EVENT_STOP();
 833                 mimeview_launch(mimeview);
 834                 return TRUE;
 835         default:
 836                 break;
 837         }
 838
 839         if (!mimeview->messageview->mainwin) return FALSE;
 840         summaryview = mimeview->messageview->mainwin->summaryview;
 841         summary_pass_key_press_event(summaryview, event);
 842         return TRUE;
 843 }
 844
 845 static void mimeview_drag_data_get(GtkWidget        *widget,
 846                                    GdkDragContext   *drag_context,
 847                                    GtkSelectionData *selection_data,
 848                                    guint             info,
 849                                    guint             time,
 850                                    MimeView         *mimeview)
 851 {
 852         gchar *filename, *uriname;
 853         MimeInfo *partinfo;
 854
 855         if (!mimeview->opened) return;
 856         if (!mimeview->file) return;
 857
 858         partinfo = mimeview_get_selected_part(mimeview);
 859         if (!partinfo) return;
 860         if (!partinfo->filename && !partinfo->name) return;
 861
 862         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 863         filename = g_basename(filename);
 864         if (*filename == '\0') return;
 865
 866         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 867                                filename, NULL);
 868
 869         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 870                 alertpanel_error
 871                         (_("Can't save the part of multipart message."));
 872
 873         uriname = g_strconcat("file:/", filename, NULL);
 874         gtk_selection_data_set(selection_data, selection_data->target, 8,
 875                                uriname, strlen(uriname));
 876
 877         g_free(uriname);
 878         g_free(filename);
 879 }
 880
 881 static void mimeview_save_all(MimeView *mimeview)
 882 {
 883         gchar *dirname;
 884         gchar *defname = NULL;
 885         MimeInfo *partinfo;
 886         MimeInfo *attachment;
 887         gchar buf[1024];
 888
 889         if (!mimeview->opened) return;
 890         if (!mimeview->file) return;
 891
 892         partinfo = mimeview_get_selected_part(mimeview);
 893         g_return_if_fail(partinfo != NULL);
 894
 895         dirname = filesel_select_file(_("Save as"), defname);
 896         if (!dirname) return;
 897
 898         /* return to first children */
 899         if (!partinfo->parent->children) return;  /* multipart container? */
 900         attachment = partinfo->parent->children->next;
 901         /* for each attachment, extract it in the selected dir. */
 902         while (attachment != NULL) {
 903                 static guint subst_cnt = 1;
 904                 gchar *attachdir;
 905                 gchar *attachname = g_strdup(get_part_name(attachment));
 906                 AlertValue aval = G_ALERTDEFAULT;
 907                 gchar *res;
 908
 909                 if (!attachname || !strlen(attachname))
 910                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 911                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 912                 g_snprintf(buf, sizeof(buf), "%s%s",
 913                            dirname,
 914                            (attachname[0] == G_DIR_SEPARATOR)
 915                            ? &attachname[1]
 916                            : attachname);
 917                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 918                 attachdir = g_dirname(buf);
 919                 make_dir_hier(attachdir);
 920                 g_free(attachdir);
 921
 922                 if (is_file_exist(buf)) {
 923                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 924                                               attachname);
 925                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 926                                           _("Cancel"), NULL);
 927                         g_free(res);
 928                 }
 929                 g_free(attachname);
 930
 931                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
 932                         alertpanel_error(_("Can't save the part of multipart message."));
 933                 attachment = attachment->next;
 934         }
 935 }
 936
 937 static void mimeview_display_as_text(MimeView *mimeview)
 938 {
 939         MimeInfo *partinfo;
 940
 941         if (!mimeview->opened) return;
 942
 943         partinfo = mimeview_get_selected_part(mimeview);
 944         g_return_if_fail(partinfo != NULL);
 945         mimeview_show_message_part(mimeview, partinfo);
 946 }
 947
 948 static void mimeview_save_as(MimeView *mimeview)
 949 {
 950         gchar *filename;
 951         gchar *defname = NULL;
 952         MimeInfo *partinfo;
 953         gchar *res;
 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         if (partinfo->filename)
 962                 defname = partinfo->filename;
 963         else if (partinfo->name) {
 964                 Xstrdup_a(defname, partinfo->name, return);
 965                 subst_for_filename(defname);
 966         }
 967
 968         filename = filesel_select_file(_("Save as"), defname);
 969         if (!filename) return;
 970         if (is_file_exist(filename)) {
 971                 AlertValue aval;
 972                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 973                                       filename);
 974                 aval = alertpanel(_("Overwrite"), res, _("OK"),
 975                                   _("Cancel"), NULL);
 976                 g_free(res);
 977                 if (G_ALERTDEFAULT != aval) return;
 978         }
 979
 980         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 981                 alertpanel_error
 982                         (_("Can't save the part of multipart message."));
 983 }
 984
 985 static void mimeview_launch(MimeView *mimeview)
 986 {
 987         MimeInfo *partinfo;
 988         gchar *filename;
 989
 990         if (!mimeview->opened) return;
 991         if (!mimeview->file) return;
 992
 993         partinfo = mimeview_get_selected_part(mimeview);
 994         g_return_if_fail(partinfo != NULL);
 995
 996         filename = procmime_get_tmp_file_name(partinfo);
 997
 998         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 999                 alertpanel_error
1000                         (_("Can't save the part of multipart message."));
1001         else
1002                 mimeview_view_file(filename, partinfo, NULL);
1003
1004         g_free(filename);
1005 }
1006
1007 static void mimeview_open_with(MimeView *mimeview)
1008 {
1009         MimeInfo *partinfo;
1010         gchar *filename;
1011         gchar *cmd;
1012
1013         if (!mimeview->opened) return;
1014         if (!mimeview->file) return;
1015
1016         partinfo = mimeview_get_selected_part(mimeview);
1017         g_return_if_fail(partinfo != NULL);
1018
1019         filename = procmime_get_tmp_file_name(partinfo);
1020
1021         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
1022                 alertpanel_error
1023                         (_("Can't save the part of multipart message."));
1024                 g_free(filename);
1025                 return;
1026         }
1027
1028         if (!prefs_common.mime_open_cmd_history)
1029                 prefs_common.mime_open_cmd_history =
1030                         add_history(NULL, prefs_common.mime_open_cmd);
1031
1032         cmd = input_dialog_combo
1033                 (_("Open with"),
1034                  _("Enter the command line to open file:\n"
1035                    "(`%s' will be replaced with file name)"),
1036                  prefs_common.mime_open_cmd,
1037                  prefs_common.mime_open_cmd_history,
1038                  TRUE);
1039         if (cmd) {
1040                 mimeview_view_file(filename, partinfo, cmd);
1041                 g_free(prefs_common.mime_open_cmd);
1042                 prefs_common.mime_open_cmd = cmd;
1043                 prefs_common.mime_open_cmd_history =
1044                         add_history(prefs_common.mime_open_cmd_history, cmd);
1045         }
1046
1047         g_free(filename);
1048 }
1049
1050 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1051                                const gchar *cmdline)
1052 {
1053         static gchar *default_image_cmdline = "display '%s'";
1054         static gchar *default_audio_cmdline = "play '%s'";
1055         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1056         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1057         gchar buf[1024];
1058         gchar m_buf[1024];
1059         const gchar *cmd;
1060         const gchar *def_cmd;
1061         const gchar *p;
1062
1063         if (cmdline) {
1064                 cmd = cmdline;
1065                 def_cmd = NULL;
1066         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1067                 return;
1068         } else if (MIME_IMAGE == partinfo->mime_type) {
1069                 cmd = prefs_common.mime_image_viewer;
1070                 def_cmd = default_image_cmdline;
1071         } else if (MIME_AUDIO == partinfo->mime_type) {
1072                 cmd = prefs_common.mime_audio_player;
1073                 def_cmd = default_audio_cmdline;
1074         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1075                 cmd = prefs_common.uri_cmd;
1076                 def_cmd = default_html_cmdline;
1077         } else {
1078                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1079                            partinfo->content_type, "%s");
1080                 cmd = m_buf;
1081                 def_cmd = NULL;
1082         }
1083
1084         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1085             !strchr(p + 2, '%'))
1086                 g_snprintf(buf, sizeof(buf), cmd, filename);
1087         else {
1088                 if (cmd)
1089                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1090                 if (def_cmd)
1091                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1092                 else
1093                         return;
1094         }
1095
1096         execute_command_line(buf, TRUE);
1097 }
1098
1099 #if USE_GPGME
1100 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1101                              gpointer data)
1102 {
1103         MimeInfo *partinfo;
1104         gchar *part_name;
1105
1106         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1107         g_return_if_fail(partinfo != NULL);
1108
1109         part_name = get_part_name(partinfo);
1110         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1111 }
1112
1113 static void mimeview_update_names(MimeView *mimeview)
1114 {
1115         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1116
1117         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1118 }
1119
1120 static void mimeview_update_signature_info(MimeView *mimeview)
1121 {
1122         MimeInfo *partinfo;
1123
1124         if (!mimeview) return;
1125         if (!mimeview->opened) return;
1126
1127         partinfo = mimeview_get_selected_part(mimeview);
1128         if (!partinfo) return;
1129
1130         if (g_strcasecmp(partinfo->content_type,
1131                          "application/pgp-signature") == 0) {
1132                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1133                 textview_show_signature_part(mimeview->textview, partinfo);
1134         }
1135 }
1136
1137 void mimeview_check_signature(MimeView *mimeview)
1138 {
1139         MimeInfo *mimeinfo;
1140         FILE *fp;
1141
1142         g_return_if_fail (mimeview_is_signed(mimeview));
1143         g_return_if_fail (gpg_started);
1144
1145         mimeinfo = gtk_ctree_node_get_row_data
1146                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1147         g_return_if_fail(mimeinfo != NULL);
1148         g_return_if_fail(mimeview->file != NULL);
1149
1150         while (mimeinfo->parent)
1151                 mimeinfo = mimeinfo->parent;
1152
1153         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1154                 FILE_OP_ERROR(mimeview->file, "fopen");
1155                 return;
1156         }
1157
1158         rfc2015_check_signature(mimeinfo, fp);
1159         fclose(fp);
1160
1161         mimeview_update_names(mimeview);
1162         mimeview_update_signature_info(mimeview);
1163
1164         textview_show_message(mimeview->messageview->textview, mimeinfo,
1165                               mimeview->file);
1166 }
1167 #endif /* USE_GPGME */
1168
1169 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1170 {
1171         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1172 }
1173
1174 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1175 {
1176         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1177 }
1178
1179 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1180 {
1181         GSList *mimeview_list, *viewer_list;
1182
1183         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1184                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1185
1186                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1187                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1188                         mimeview->mimeviewer = NULL;
1189                 }
1190
1191                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1192                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1193
1194                         mimeviewer->destroy_viewer(mimeviewer);
1195                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1196                 }
1197         }
1198
1199         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1200 }