src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <gtk/gtknotebook.h>
  29 #include <gtk/gtkscrolledwindow.h>
  30 #include <gtk/gtkctree.h>
  31 #include <gtk/gtkvbox.h>
  32 #include <gtk/gtkvpaned.h>
  33 #include <gtk/gtktext.h>
  34 #include <gtk/gtksignal.h>
  35 #include <gtk/gtkmenu.h>
  36 #include <gtk/gtkdnd.h>
  37 #include <gtk/gtkselection.h>
  38 #include <stdio.h>
  39 #include <unistd.h>
  40
  41 #include "intl.h"
  42 #include "main.h"
  43 #include "mimeview.h"
  44 #include "textview.h"
  45 #include "procmime.h"
  46 #include "summaryview.h"
  47 #include "menu.h"
  48 #include "filesel.h"
  49 #include "alertpanel.h"
  50 #include "inputdialog.h"
  51 #include "utils.h"
  52 #include "gtkutils.h"
  53 #include "prefs_common.h"
  54 #include "rfc2015.h"
  55 #include "pgptext.h"
  56
  57 typedef enum
  58 {
  59         COL_MIMETYPE = 0,
  60         COL_SIZE     = 1,
  61         COL_NAME     = 2
  62 } MimeViewColumnPos;
  63
  64 #define N_MIMEVIEW_COLS 3
  65
  66 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  67                                                  MimeInfo       *mimeinfo,
  68                                                  GtkCTreeNode   *parent);
  69 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  70                                                  MimeInfo       *partinfo,
  71                                                  GtkCTreeNode   *parent);
  72 static void mimeview_show_message_part          (MimeView       *mimeview,
  73                                                  MimeInfo       *partinfo);
  74 static void mimeview_show_image_part            (MimeView       *mimeview,
  75                                                  MimeInfo       *partinfo);
  76 static void mimeview_change_view_type           (MimeView       *mimeview,
  77                                                  MimeViewType    type);
  78 static void mimeview_clear                      (MimeView       *mimeview);
  79
  80 static void mimeview_selected           (GtkCTree       *ctree,
  81                                          GtkCTreeNode   *node,
  82                                          gint            column,
  83                                          MimeView       *mimeview);
  84 static void mimeview_start_drag         (GtkWidget      *widget,
  85                                          gint            button,
  86                                          GdkEvent       *event,
  87                                          MimeView       *mimeview);
  88 static gint mimeview_button_pressed     (GtkWidget      *widget,
  89                                          GdkEventButton *event,
  90                                          MimeView       *mimeview);
  91 static gint mimeview_key_pressed        (GtkWidget      *widget,
  92                                          GdkEventKey    *event,
  93                                          MimeView       *mimeview);
  94
  95 static void mimeview_drag_data_get      (GtkWidget        *widget,
  96                                          GdkDragContext   *drag_context,
  97                                          GtkSelectionData *selection_data,
  98                                          guint             info,
  99                                          guint             time,
 100                                          MimeView         *mimeview);
 101
 102 static void mimeview_display_as_text    (MimeView       *mimeview);
 103 static void mimeview_show_image         (MimeView       *mimeview);
 104 static void mimeview_save_as            (MimeView       *mimeview);
 105 static void mimeview_save_all           (MimeView       *mimeview);
 106 static void mimeview_launch             (MimeView       *mimeview);
 107 static void mimeview_open_with          (MimeView       *mimeview);
 108 static void mimeview_view_file          (const gchar    *filename,
 109                                          MimeInfo       *partinfo,
 110                                          const gchar    *cmdline);
 111
 112 static GtkItemFactoryEntry mimeview_popup_entries[] =
 113 {
 114         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 115         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 116         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 117         {N_("/_Display image"),   NULL, mimeview_show_image,      0, NULL},
 118         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 119         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 120 #if USE_GPGME
 121         ,
 122         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 123 #endif
 124 };
 125
 126 static GtkTargetEntry mimeview_mime_types[] =
 127 {
 128         {"text/uri-list", 0, 0}
 129 };
 130
 131 MimeView *mimeview_create(void)
 132 {
 133         MimeView *mimeview;
 134
 135         GtkWidget *notebook;
 136         GtkWidget *vbox;
 137         GtkWidget *paned;
 138         GtkWidget *scrolledwin;
 139         GtkWidget *ctree;
 140         GtkWidget *mime_vbox;
 141         GtkWidget *popupmenu;
 142         GtkItemFactory *popupfactory;
 143         gchar *titles[N_MIMEVIEW_COLS];
 144         gint n_entries;
 145         gint i;
 146
 147         debug_print("Creating MIME view...\n");
 148         mimeview = g_new0(MimeView, 1);
 149
 150         titles[COL_MIMETYPE] = _("MIME Type");
 151         titles[COL_SIZE]     = _("Size");
 152         titles[COL_NAME]     = _("Name");
 153
 154         notebook = gtk_notebook_new();
 155         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 156
 157         vbox = gtk_vbox_new(FALSE, 0);
 158         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 159         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
 160                                         _("Text"));
 161
 162         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 163         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 164                                        GTK_POLICY_AUTOMATIC,
 165                                        GTK_POLICY_ALWAYS);
 166         gtk_widget_set_usize(scrolledwin, -1, 80);
 167
 168         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 169         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 170         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 171         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 172                                            GTK_JUSTIFY_RIGHT);
 173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 174         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
 175         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 176                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 177                                        GTK_CAN_FOCUS);
 178         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 179
 180         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 181                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 182         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 183                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 184         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 185                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 186         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 187                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 188         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 189                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 190
 191         mime_vbox = gtk_vbox_new(FALSE, 0);
 192
 193         paned = gtk_vpaned_new();
 194         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
 195         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
 196         gtk_container_add(GTK_CONTAINER(notebook), paned);
 197         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
 198                                         _("Attachments"));
 199
 200         gtk_widget_show_all(notebook);
 201
 202         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 203
 204         n_entries = sizeof(mimeview_popup_entries) /
 205                 sizeof(mimeview_popup_entries[0]);
 206         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 207                                       "<MimeView>", &popupfactory, mimeview);
 208
 209         mimeview->notebook     = notebook;
 210         mimeview->vbox         = vbox;
 211         mimeview->paned        = paned;
 212         mimeview->scrolledwin  = scrolledwin;
 213         mimeview->ctree        = ctree;
 214         mimeview->mime_vbox    = mime_vbox;
 215         mimeview->popupmenu    = popupmenu;
 216         mimeview->popupfactory = popupfactory;
 217         mimeview->type         = -1;
 218
 219         return mimeview;
 220 }
 221
 222 void mimeview_init(MimeView *mimeview)
 223 {
 224 }
 225
 226 /*
 227  * Check whether the message is OpenPGP signed
 228  */
 229 #if USE_GPGME
 230 static gboolean mimeview_is_signed(MimeView *mimeview)
 231 {
 232         MimeInfo *partinfo = NULL;
 233
 234         debug_print("mimeview_is signed of %p\n", mimeview);
 235
 236         if (!mimeview) return FALSE;
 237         if (!mimeview->opened) return FALSE;
 238
 239         debug_print("mimeview_is_signed: open\n" );
 240
 241         if (!mimeview->file) return FALSE;
 242
 243         debug_print("mimeview_is_signed: file\n" );
 244
 245         partinfo = gtk_ctree_node_get_row_data
 246                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 247         g_return_val_if_fail(partinfo != NULL, FALSE);
 248
 249         /* walk the tree and see whether there is a signature somewhere */
 250         do {
 251                 if (rfc2015_has_signature(partinfo))
 252                         return TRUE;
 253         } while ((partinfo = partinfo->parent) != NULL);
 254
 255         debug_print("mimeview_is_signed: FALSE\n" );
 256
 257         return FALSE;
 258 }
 259
 260 static void set_unchecked_signature(MimeInfo *mimeinfo)
 261 {
 262         MimeInfo *sig_partinfo;
 263
 264         sig_partinfo = rfc2015_find_signature(mimeinfo);
 265         if (sig_partinfo == NULL) return;
 266
 267         g_free(sig_partinfo->sigstatus);
 268         sig_partinfo->sigstatus =
 269                 g_strdup(_("Select \"Check signature\" to check"));
 270
 271         g_free(sig_partinfo->sigstatus_full);
 272         sig_partinfo->sigstatus_full = NULL;
 273 }
 274 #endif /* USE_GPGME */
 275
 276 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 277                            const gchar *file)
 278 {
 279         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 280         GtkCTreeNode *node;
 281         gchar buf[BUFFSIZE];
 282         FILE *fp;
 283
 284         mimeview_clear(mimeview);
 285         textview_clear(mimeview->messageview->textview);
 286
 287         g_return_if_fail(file != NULL);
 288         g_return_if_fail(mimeinfo != NULL);
 289
 290         mimeview->mimeinfo = mimeinfo;
 291
 292         if ((fp = fopen(file, "rb")) == NULL) {
 293                 FILE_OP_ERROR(file, "fopen");
 294                 return;
 295         }
 296         mimeview->file = g_strdup(file);
 297
 298         /* skip MIME part headers */
 299         if (mimeinfo->mime_type == MIME_MULTIPART) {
 300                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 301                         perror("fseek");
 302                 while (fgets(buf, sizeof(buf), fp) != NULL)
 303                         if (buf[0] == '\r' || buf[0] == '\n') break;
 304         }
 305
 306         procmime_scan_multipart_message(mimeinfo, fp);
 307 #if USE_GPGME
 308         if (prefs_common.auto_check_signatures)
 309                 rfc2015_check_signature(mimeinfo, fp);
 310         else
 311                 set_unchecked_signature(mimeinfo);
 312 #endif
 313
 314         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 315                                          mimeview);
 316
 317         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 318
 319         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 320                                            mimeview_selected, mimeview);
 321
 322         /* search first text part */
 323         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 324              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 325                 MimeInfo *partinfo;
 326
 327                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 328                 if (partinfo &&
 329                     (partinfo->mime_type == MIME_TEXT ||
 330                      partinfo->mime_type == MIME_TEXT_HTML))
 331                         break;
 332         }
 333         fclose(fp);
 334         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 335
 336         if (!node)
 337                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 338
 339         if (node) {
 340                 gtk_ctree_select(ctree, node);
 341                 gtkut_ctree_set_focus_row(ctree, node);
 342                 gtk_widget_grab_focus(mimeview->ctree);
 343         }
 344 }
 345
 346 void mimeview_destroy(MimeView *mimeview)
 347 {
 348         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 349         g_free(mimeview->file);
 350         g_free(mimeview);
 351 }
 352
 353 static void mimeview_set_multipart_tree(MimeView *mimeview,
 354                                         MimeInfo *mimeinfo,
 355                                         GtkCTreeNode *parent)
 356 {
 357         GtkCTreeNode *current = parent;
 358
 359         g_return_if_fail(mimeinfo != NULL);
 360
 361         if (!mimeinfo->sub && mimeinfo->parent)
 362                 current = mimeview_append_part(mimeview, mimeinfo, parent);
 363         if (mimeinfo->sub && !mimeinfo->sub->children &&
 364             mimeinfo->sub->mime_type != MIME_TEXT &&
 365             mimeinfo->sub->mime_type != MIME_TEXT_HTML) {
 366                 mimeview_append_part(mimeview, mimeinfo->sub, parent);
 367                 return;
 368         }
 369
 370         if (mimeinfo->sub)
 371                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
 372
 373         if (mimeinfo->children)
 374                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
 375
 376         if (mimeinfo->next)
 377                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
 378 }
 379
 380 static gchar *get_part_name(MimeInfo *partinfo)
 381 {
 382 #if USE_GPGME
 383         if (partinfo->sigstatus)
 384                 return partinfo->sigstatus;
 385         else
 386 #endif
 387         if (partinfo->name)
 388                 return partinfo->name;
 389         else if (partinfo->filename)
 390                 return partinfo->filename;
 391         else
 392                 return "";
 393 }
 394
 395 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 396                                           MimeInfo *partinfo,
 397                                           GtkCTreeNode *parent)
 398 {
 399         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 400         GtkCTreeNode *node;
 401         gchar *str[N_MIMEVIEW_COLS];
 402
 403         str[COL_MIMETYPE] =
 404                 partinfo->content_type ? partinfo->content_type : "";
 405         str[COL_SIZE] = to_human_readable(partinfo->size);
 406         str[COL_NAME] = get_part_name(partinfo);
 407
 408         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 409                                      NULL, NULL, NULL, NULL,
 410                                      FALSE, TRUE);
 411         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 412
 413         return node;
 414 }
 415
 416 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 417 {
 418         FILE *fp;
 419         const gchar *fname;
 420 #if USE_GPGME
 421         MimeInfo *pi;
 422 #endif
 423
 424         if (!partinfo) return;
 425
 426 #if USE_GPGME
 427         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 428                 ;
 429         fname = pi ? pi->plaintextfile : mimeview->file;
 430 #else
 431         fname = mimeview->file;
 432 #endif /* USE_GPGME */
 433         if (!fname) return;
 434
 435         if ((fp = fopen(fname, "rb")) == NULL) {
 436                 FILE_OP_ERROR(fname, "fopen");
 437                 return;
 438         }
 439
 440         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 441                 FILE_OP_ERROR(mimeview->file, "fseek");
 442                 fclose(fp);
 443                 return;
 444         }
 445
 446         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 447         textview_show_part(mimeview->textview, partinfo, fp);
 448
 449         fclose(fp);
 450 }
 451
 452 static void mimeview_show_image_part(MimeView *mimeview, MimeInfo *partinfo)
 453 {
 454         gchar *filename;
 455
 456         if (!partinfo) return;
 457
 458         filename = procmime_get_tmp_file_name(partinfo);
 459
 460         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 461                 alertpanel_error
 462                         (_("Can't get the part of multipart message."));
 463         else {
 464                 mimeview_change_view_type(mimeview, MIMEVIEW_IMAGE);
 465                 /* Workaround for the GTK+ bug with handling scroll adjustments
 466                  * in GtkViewport */
 467                 imageview_clear(mimeview->imageview);
 468                 imageview_show_image(mimeview->imageview, partinfo, filename);
 469                 unlink(filename);
 470         }
 471
 472         g_free(filename);
 473 }
 474
 475 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 476 {
 477         TextView  *textview  = mimeview->textview;
 478         ImageView *imageview = mimeview->imageview;
 479         GList *children;
 480
 481         if (mimeview->type == type) return;
 482
 483         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
 484         if (children) {
 485                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
 486                                        GTK_WIDGET(children->data));
 487                 g_list_free(children);
 488         }
 489
 490         switch (type) {
 491         case MIMEVIEW_IMAGE:
 492                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 493                                   GTK_WIDGET_PTR(imageview));
 494                 break;
 495         case MIMEVIEW_TEXT:
 496                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
 497                                   GTK_WIDGET_PTR(textview));
 498                 break;
 499         default:
 500                 return;
 501         }
 502
 503         mimeview->type = type;
 504 }
 505
 506 static void mimeview_clear(MimeView *mimeview)
 507 {
 508         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 509
 510         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 511         mimeview->mimeinfo = NULL;
 512
 513         gtk_clist_clear(clist);
 514         textview_clear(mimeview->textview);
 515         imageview_clear(mimeview->imageview);
 516
 517         mimeview->opened = NULL;
 518
 519         g_free(mimeview->file);
 520         mimeview->file = NULL;
 521
 522         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
 523 }
 524
 525 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 526                               MimeView *mimeview)
 527 {
 528         MimeInfo *partinfo;
 529
 530         if (mimeview->opened == node) return;
 531         mimeview->opened = node;
 532         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 533
 534         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 535         if (!partinfo) return;
 536
 537         /* ungrab the mouse event */
 538         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 539                 gtk_grab_remove(GTK_WIDGET(ctree));
 540                 if (gdk_pointer_is_grabbed())
 541                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 542         }
 543
 544         mimeview->textview->default_text = FALSE;
 545
 546         switch (partinfo->mime_type) {
 547         case MIME_TEXT:
 548         case MIME_TEXT_HTML:
 549         case MIME_TEXT_ENRICHED:
 550         case MIME_MESSAGE_RFC822:
 551         case MIME_MULTIPART:
 552                 mimeview_show_message_part(mimeview, partinfo);
 553
 554                 break;
 555 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 556         case MIME_IMAGE:
 557                 mimeview->textview->default_text = TRUE;
 558                 if (prefs_common.display_img)
 559                         mimeview_show_image_part(mimeview, partinfo);
 560                 else {
 561                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 562                         textview_show_mime_part(mimeview->textview, partinfo);
 563                 }
 564                 break;
 565 #endif
 566         default:
 567                 mimeview->textview->default_text = TRUE;
 568                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 569 #if USE_GPGME
 570                 if (g_strcasecmp(partinfo->content_type,
 571                                  "application/pgp-signature") == 0)
 572                         textview_show_signature_part(mimeview->textview,
 573                                                      partinfo);
 574                 else
 575 #endif
 576                         textview_show_mime_part(mimeview->textview, partinfo);
 577                 break;
 578         }
 579 }
 580
 581 static void mimeview_start_drag(GtkWidget *widget, gint button,
 582                                 GdkEvent *event, MimeView *mimeview)
 583 {
 584         GtkTargetList *list;
 585         GdkDragContext *context;
 586         MimeInfo *partinfo;
 587         GtkCTree *ctree;
 588
 589         g_return_if_fail(mimeview != NULL);
 590         ctree = GTK_CTREE(mimeview->ctree);
 591         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
 592         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 593
 594         list = gtk_target_list_new(mimeview_mime_types, 1);
 595         context = gtk_drag_begin(widget, list,
 596                                  GDK_ACTION_COPY, button, event);
 597         gtk_drag_set_icon_default(context);
 598 }
 599
 600 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 601                                     MimeView *mimeview)
 602 {
 603         GtkCList *clist = GTK_CLIST(widget);
 604         MimeInfo *partinfo;
 605         gint row, column;
 606
 607         if (!event) return FALSE;
 608
 609         if (event->button == 2 || event->button == 3) {
 610                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 611                                                   &row, &column))
 612                         return FALSE;
 613                 gtk_clist_unselect_all(clist);
 614                 gtk_clist_select_row(clist, row, column);
 615                 gtkut_clist_set_focus_row(clist, row);
 616         }
 617
 618         if (event->button == 2 ||
 619             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 620                 /* call external program for image, audio or html */
 621                 mimeview_launch(mimeview);
 622         } else if (event->button == 3) {
 623                 partinfo = gtk_ctree_node_get_row_data
 624                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
 625                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 626                                  partinfo->mime_type == MIME_TEXT_HTML ||
 627                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 628                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 629                                  partinfo->mime_type == MIME_IMAGE ||
 630                                  partinfo->mime_type == MIME_MULTIPART))
 631                         menu_set_sensitive(mimeview->popupfactory,
 632                                            "/Display as text", FALSE);
 633                 else
 634                         menu_set_sensitive(mimeview->popupfactory,
 635                                            "/Display as text", TRUE);
 636                 if (partinfo &&
 637                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 638                         menu_set_sensitive(mimeview->popupfactory,
 639                                            "/Open", FALSE);
 640                 else
 641                         menu_set_sensitive(mimeview->popupfactory,
 642                                            "/Open", TRUE);
 643
 644 #if (HAVE_GDK_PIXBUF || HAVE_GDK_IMLIB)
 645                 if (partinfo && (partinfo->mime_type == MIME_IMAGE))
 646                         menu_set_sensitive(mimeview->popupfactory,
 647                                            "/Display image", TRUE);
 648 #endif
 649 #if USE_GPGME
 650                 menu_set_sensitive(mimeview->popupfactory,
 651                                    "/Check signature",
 652                                    mimeview_is_signed(mimeview));
 653 #endif
 654
 655                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 656                                NULL, NULL, NULL, NULL,
 657                                event->button, event->time);
 658         }
 659
 660         return TRUE;
 661 }
 662
 663 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 664 {
 665         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 666 }
 667
 668 #define BREAK_ON_MODIFIER_KEY() \
 669         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 670
 671 #define KEY_PRESS_EVENT_STOP() \
 672         if (gtk_signal_n_emissions_by_name \
 673                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 674                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 675                                              "key_press_event"); \
 676         }
 677
 678 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 679                                  MimeView *mimeview)
 680 {
 681         SummaryView *summaryview;
 682         GtkCTree *ctree = GTK_CTREE(widget);
 683         GtkCTreeNode *node;
 684
 685         if (!event) return FALSE;
 686         if (!mimeview->opened) return FALSE;
 687
 688         switch (event->keyval) {
 689         case GDK_space:
 690                 if (textview_scroll_page(mimeview->textview, FALSE))
 691                         return TRUE;
 692
 693                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 694                 if (node) {
 695                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 696                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 697                         return TRUE;
 698                 }
 699                 break;
 700         case GDK_BackSpace:
 701                 textview_scroll_page(mimeview->textview, TRUE);
 702                 return TRUE;
 703         case GDK_Return:
 704                 textview_scroll_one_line(mimeview->textview,
 705                                          (event->state & GDK_MOD1_MASK) != 0);
 706                 return TRUE;
 707         case GDK_n:
 708         case GDK_N:
 709                 BREAK_ON_MODIFIER_KEY();
 710                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 711                 KEY_PRESS_EVENT_STOP();
 712
 713                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 714                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 715                 return TRUE;
 716         case GDK_p:
 717         case GDK_P:
 718                 BREAK_ON_MODIFIER_KEY();
 719                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 720                 KEY_PRESS_EVENT_STOP();
 721
 722                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 723                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 724                 return TRUE;
 725         case GDK_y:
 726                 BREAK_ON_MODIFIER_KEY();
 727                 KEY_PRESS_EVENT_STOP();
 728                 mimeview_save_as(mimeview);
 729                 return TRUE;
 730         case GDK_t:
 731                 BREAK_ON_MODIFIER_KEY();
 732                 KEY_PRESS_EVENT_STOP();
 733                 mimeview_display_as_text(mimeview);
 734                 return TRUE;
 735         case GDK_i:
 736                 BREAK_ON_MODIFIER_KEY();
 737                 KEY_PRESS_EVENT_STOP();
 738                 mimeview_show_image(mimeview);
 739                 return TRUE;
 740         case GDK_l:
 741                 BREAK_ON_MODIFIER_KEY();
 742                 KEY_PRESS_EVENT_STOP();
 743                 mimeview_launch(mimeview);
 744                 return TRUE;
 745         default:
 746                 break;
 747         }
 748
 749         if (!mimeview->messageview->mainwin) return FALSE;
 750         summaryview = mimeview->messageview->mainwin->summaryview;
 751         summary_pass_key_press_event(summaryview, event);
 752         return TRUE;
 753 }
 754
 755 static void mimeview_drag_data_get(GtkWidget        *widget,
 756                                    GdkDragContext   *drag_context,
 757                                    GtkSelectionData *selection_data,
 758                                    guint             info,
 759                                    guint             time,
 760                                    MimeView         *mimeview)
 761 {
 762         gchar *filename, *uriname;
 763         MimeInfo *partinfo;
 764
 765         if (!mimeview->opened) return;
 766         if (!mimeview->file) return;
 767
 768         partinfo = gtk_ctree_node_get_row_data
 769                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 770         if (!partinfo) return;
 771         if (!partinfo->filename && !partinfo->name) return;
 772
 773         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 774         filename = g_basename(filename);
 775         if (*filename == '\0') return;
 776
 777         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 778                                filename, NULL);
 779
 780         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 781                 alertpanel_error
 782                         (_("Can't save the part of multipart message."));
 783
 784         uriname = g_strconcat("file:/", filename, NULL);
 785         gtk_selection_data_set(selection_data, selection_data->target, 8,
 786                                uriname, strlen(uriname));
 787
 788         g_free(uriname);
 789         g_free(filename);
 790 }
 791
 792 static void mimeview_save_all(MimeView *mimeview)
 793 {
 794         gchar *dirname;
 795         gchar *defname = NULL;
 796         MimeInfo *partinfo;
 797         MimeInfo *attachment;
 798         gchar buf[1024];
 799
 800         if (!mimeview->opened) return;
 801         if (!mimeview->file) return;
 802
 803         partinfo = gtk_ctree_node_get_row_data
 804                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 805         g_return_if_fail(partinfo != NULL);
 806
 807         dirname = filesel_select_file(_("Save as"), defname);
 808         if (!dirname) return;
 809
 810         /* return to first children */
 811         attachment = partinfo->parent->children->next;
 812         /* for each attachment, extract it in the selected dir. */
 813         while(attachment != NULL)
 814         {
 815                 static guint subst_cnt = 1;
 816                 gchar *attachdir;
 817                 gchar *attachname = (attachment->filename)
 818                         ? g_strdup(attachment->filename)
 819                         : g_strdup_printf("noname.%d",subst_cnt++);
 820
 821                 subst_chars(attachname, "/\\", G_DIR_SEPARATOR);
 822                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 823                 g_snprintf(buf, sizeof(buf), "%s%s",
 824                            dirname,
 825                            (attachname[0] == G_DIR_SEPARATOR)
 826                            ? &attachname[1]
 827                            : attachname);
 828                 attachdir = g_dirname(buf);
 829                 make_dir_hier(attachdir);
 830                 g_free(attachdir);
 831                 g_free(attachname);
 832
 833                 if (is_file_exist(buf)) {
 834                         AlertValue aval;
 835
 836                         aval = alertpanel(_("Overwrite"),
 837                                           _("Overwrite existing file?"),
 838                                           _("OK"), _("Cancel"), NULL);
 839                         if (G_ALERTDEFAULT != aval) return;
 840                 }
 841                 if (procmime_get_part(buf, mimeview->file, attachment) < 0)
 842                         alertpanel_error(_("Can't save the part of multipart message."));
 843                 attachment = attachment->next;
 844         }
 845 }
 846
 847 static void mimeview_display_as_text(MimeView *mimeview)
 848 {
 849         MimeInfo *partinfo;
 850
 851         if (!mimeview->opened) return;
 852
 853         partinfo = gtk_ctree_node_get_row_data
 854                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 855         mimeview_show_message_part(mimeview, partinfo);
 856 }
 857
 858 static void mimeview_show_image(MimeView *mimeview)
 859 {
 860         MimeInfo *partinfo;
 861
 862         if (!mimeview->opened) return;
 863
 864         partinfo = gtk_ctree_node_get_row_data
 865                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 866         mimeview_show_image_part(mimeview, partinfo);
 867 }
 868
 869 static void mimeview_save_as(MimeView *mimeview)
 870 {
 871         gchar *filename;
 872         gchar *defname = NULL;
 873         MimeInfo *partinfo;
 874
 875         if (!mimeview->opened) return;
 876         if (!mimeview->file) return;
 877
 878         partinfo = gtk_ctree_node_get_row_data
 879                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 880         g_return_if_fail(partinfo != NULL);
 881
 882         if (partinfo->filename)
 883                 defname = partinfo->filename;
 884         else if (partinfo->name) {
 885                 Xstrdup_a(defname, partinfo->name, return);
 886                 subst_for_filename(defname);
 887         }
 888
 889         filename = filesel_select_file(_("Save as"), defname);
 890         if (!filename) return;
 891         if (is_file_exist(filename)) {
 892                 AlertValue aval;
 893
 894                 aval = alertpanel(_("Overwrite"),
 895                                   _("Overwrite existing file?"),
 896                                   _("OK"), _("Cancel"), NULL);
 897                 if (G_ALERTDEFAULT != aval) return;
 898         }
 899
 900         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 901                 alertpanel_error
 902                         (_("Can't save the part of multipart message."));
 903 }
 904
 905 static void mimeview_launch(MimeView *mimeview)
 906 {
 907         MimeInfo *partinfo;
 908         gchar *filename;
 909
 910         if (!mimeview->opened) return;
 911         if (!mimeview->file) return;
 912
 913         partinfo = gtk_ctree_node_get_row_data
 914                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 915         g_return_if_fail(partinfo != NULL);
 916
 917         filename = procmime_get_tmp_file_name(partinfo);
 918
 919         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 920                 alertpanel_error
 921                         (_("Can't save the part of multipart message."));
 922         else
 923                 mimeview_view_file(filename, partinfo, NULL);
 924
 925         g_free(filename);
 926 }
 927
 928 static void mimeview_open_with(MimeView *mimeview)
 929 {
 930         MimeInfo *partinfo;
 931         gchar *filename;
 932         gchar *cmd;
 933
 934         if (!mimeview->opened) return;
 935         if (!mimeview->file) return;
 936
 937         partinfo = gtk_ctree_node_get_row_data
 938                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 939         g_return_if_fail(partinfo != NULL);
 940
 941         filename = procmime_get_tmp_file_name(partinfo);
 942
 943         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
 944                 alertpanel_error
 945                         (_("Can't save the part of multipart message."));
 946                 g_free(filename);
 947                 return;
 948         }
 949
 950         if (!prefs_common.mime_open_cmd_history)
 951                 prefs_common.mime_open_cmd_history =
 952                         add_history(NULL, prefs_common.mime_open_cmd);
 953
 954         cmd = input_dialog_combo
 955                 (_("Open with"),
 956                  _("Enter the command line to open file:\n"
 957                    "(`%s' will be replaced with file name)"),
 958                  prefs_common.mime_open_cmd,
 959                  prefs_common.mime_open_cmd_history,
 960                  TRUE);
 961         if (cmd) {
 962                 mimeview_view_file(filename, partinfo, cmd);
 963                 g_free(prefs_common.mime_open_cmd);
 964                 prefs_common.mime_open_cmd = cmd;
 965                 prefs_common.mime_open_cmd_history =
 966                         add_history(prefs_common.mime_open_cmd_history, cmd);
 967         }
 968
 969         g_free(filename);
 970 }
 971
 972 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
 973                                const gchar *cmdline)
 974 {
 975         static gchar *default_image_cmdline = "display '%s'";
 976         static gchar *default_audio_cmdline = "play '%s'";
 977         static gchar *default_html_cmdline =
 978                 "netscape -remote 'openURL(%s,raise)'";
 979         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
 980         gchar buf[1024];
 981         gchar m_buf[1024];
 982         const gchar *cmd;
 983         const gchar *def_cmd;
 984         const gchar *p;
 985
 986         if (cmdline) {
 987                 cmd = cmdline;
 988                 def_cmd = NULL;
 989         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
 990                 return;
 991         } else if (MIME_IMAGE == partinfo->mime_type) {
 992                 cmd = prefs_common.mime_image_viewer;
 993                 def_cmd = default_image_cmdline;
 994         } else if (MIME_AUDIO == partinfo->mime_type) {
 995                 cmd = prefs_common.mime_audio_player;
 996                 def_cmd = default_audio_cmdline;
 997         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
 998                 cmd = prefs_common.uri_cmd;
 999                 def_cmd = default_html_cmdline;
1000         } else {
1001                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1002                            partinfo->content_type, "%s");
1003                 cmd = m_buf;
1004                 def_cmd = NULL;
1005         }
1006
1007         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1008             !strchr(p + 2, '%'))
1009                 g_snprintf(buf, sizeof(buf), cmd, filename);
1010         else {
1011                 if (cmd)
1012                         g_warning(_("MIME viewer command line is invalid: `%s'"), cmd);
1013                 if (def_cmd)
1014                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1015                 else
1016                         return;
1017         }
1018
1019         execute_command_line(buf, TRUE);
1020 }
1021
1022 #if USE_GPGME
1023 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1024                              gpointer data)
1025 {
1026         MimeInfo *partinfo;
1027         gchar *part_name;
1028
1029         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1030         g_return_if_fail(partinfo != NULL);
1031
1032         part_name = get_part_name(partinfo);
1033         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1034 }
1035
1036 static void mimeview_update_names(MimeView *mimeview)
1037 {
1038         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1039
1040         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1041 }
1042
1043 static void mimeview_update_signature_info(MimeView *mimeview)
1044 {
1045         MimeInfo *partinfo;
1046
1047         if (!mimeview) return;
1048         if (!mimeview->opened) return;
1049
1050         partinfo = gtk_ctree_node_get_row_data
1051                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1052         if (!partinfo) return;
1053
1054         if (g_strcasecmp(partinfo->content_type,
1055                          "application/pgp-signature") == 0) {
1056                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1057                 textview_show_signature_part(mimeview->textview, partinfo);
1058         }
1059 }
1060
1061 void mimeview_check_signature(MimeView *mimeview)
1062 {
1063         MimeInfo *mimeinfo;
1064         FILE *fp;
1065
1066         g_return_if_fail (mimeview_is_signed(mimeview));
1067
1068         mimeinfo = gtk_ctree_node_get_row_data
1069                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1070         g_return_if_fail(mimeinfo != NULL);
1071         g_return_if_fail(mimeview->file != NULL);
1072
1073         while (mimeinfo->parent)
1074                 mimeinfo = mimeinfo->parent;
1075
1076         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1077                 FILE_OP_ERROR(mimeview->file, "fopen");
1078                 return;
1079         }
1080
1081         rfc2015_check_signature(mimeinfo, fp);
1082         fclose(fp);
1083
1084         mimeview_update_names(mimeview);
1085         mimeview_update_signature_info(mimeview);
1086
1087         textview_show_message(mimeview->messageview->textview, mimeinfo,
1088                               mimeview->file);
1089 }
1090 #endif /* USE_GPGME */