src/mimeview.c

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