src/action.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2005 Hiroyuki Yamamoto & The Sylpheed Claws Team
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 <glib/gi18n.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30 #ifdef GDK_WINDOWING_X11
  31 #  include <gdk/gdkx.h>
  32 #endif /* GDK_WINDOWING_X11 */
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <errno.h>
  37 #include <sys/types.h>
  38 #if HAVE_SYS_WAIT_H
  39 #  include <sys/wait.h>
  40 #endif
  41 #include <signal.h>
  42 #include <unistd.h>
  43
  44 #include "utils.h"
  45 #include "gtkutils.h"
  46 #include "manage_window.h"
  47 #include "mainwindow.h"
  48 #include "prefs_common.h"
  49 #include "alertpanel.h"
  50 #include "inputdialog.h"
  51 #include "action.h"
  52 #include "compose.h"
  53 #include "procmsg.h"
  54 #include "textview.h"
  55 #include "matcher_parser.h" /* CLAWS */
  56 #include "filtering.h"
  57
  58 typedef struct _Children                Children;
  59 typedef struct _ChildInfo               ChildInfo;
  60 typedef struct _UserStringDialog        UserStringDialog;
  61
  62 struct _Children
  63 {
  64         GtkWidget       *dialog;
  65         GtkWidget       *text;
  66         GtkWidget       *input_entry;
  67         GtkWidget       *input_hbox;
  68         GtkWidget       *progress_bar;
  69         GtkWidget       *abort_btn;
  70         GtkWidget       *close_btn;
  71         GtkWidget       *scrolledwin;
  72
  73         gchar           *action;
  74         ActionType       action_type;
  75         GSList          *list;
  76         gint             nb;
  77         gint             initial_nb;
  78         gint             open_in;
  79         gboolean         output;
  80
  81         GtkWidget       *msg_text;
  82
  83         gboolean         is_selection;
  84 };
  85
  86 struct _ChildInfo
  87 {
  88         Children        *children;
  89         gchar           *cmd;
  90         pid_t            pid;
  91         gint             chld_in;
  92         gint             chld_out;
  93         gint             chld_err;
  94         gint             chld_status;
  95         gint             tag_in;
  96         gint             tag_out;
  97         gint             tag_err;
  98         gint             tag_status;
  99         gint             new_out;
 100
 101         GString         *output;
 102         void (*callback)(void *data);
 103         void *data;
 104 };
 105
 106 static void action_update_menu          (GtkItemFactory *ifactory,
 107                                          gchar          *branch_path,
 108                                          gpointer        callback,
 109                                          gpointer        data);
 110 static void compose_actions_execute_cb  (Compose        *compose,
 111                                          guint           action_nb,
 112                                          GtkWidget      *widget);
 113 static void mainwin_actions_execute_cb  (MainWindow     *mainwin,
 114                                          guint           action_nb,
 115                                          GtkWidget      *widget);
 116 static void msgview_actions_execute_cb  (MessageView    *msgview,
 117                                          guint           action_nb,
 118                                          GtkWidget      *widget);
 119 static void message_actions_execute     (MessageView    *msgview,
 120                                          guint           action_nb,
 121                                          GSList         *msg_list);
 122
 123 static gboolean execute_filtering_actions(gchar         *action,
 124                                           GSList        *msglist);
 125
 126 static gboolean execute_actions         (gchar          *action,
 127                                          GSList         *msg_list,
 128                                          GtkWidget      *text,
 129                                          gint            body_pos,
 130                                          MimeInfo       *partinfo,
 131                                          void (*callback)(void *data),
 132                                          void *data);
 133
 134 static gchar *parse_action_cmd          (gchar          *action,
 135                                          MsgInfo        *msginfo,
 136                                          GSList         *msg_list,
 137                                          MimeInfo       *partinfo,
 138                                          const gchar    *user_str,
 139                                          const gchar    *user_hidden_str,
 140                                          const gchar    *sel_str);
 141 static gboolean parse_append_filename   (GString        *cmd,
 142                                          MsgInfo        *msginfo);
 143
 144 static gboolean parse_append_msgpart    (GString        *cmd,
 145                                          MsgInfo        *msginfo,
 146                                          MimeInfo       *partinfo);
 147
 148 static ChildInfo *fork_child            (gchar          *cmd,
 149                                          const gchar    *msg_str,
 150                                          Children       *children);
 151
 152 static gint wait_for_children           (Children       *children);
 153
 154 static void free_children               (Children       *children);
 155
 156 static void childinfo_close_pipes       (ChildInfo      *child_info);
 157
 158 static void create_io_dialog            (Children       *children);
 159 static void update_io_dialog            (Children       *children);
 160
 161 static void hide_io_dialog_cb           (GtkWidget      *widget,
 162                                          gpointer        data);
 163 static gint io_dialog_key_pressed_cb    (GtkWidget      *widget,
 164                                          GdkEventKey    *event,
 165                                          gpointer        data);
 166
 167 static void catch_output                (gpointer                data,
 168                                          gint                    source,
 169                                          GdkInputCondition       cond);
 170 static void catch_input                 (gpointer                data,
 171                                          gint                    source,
 172                                          GdkInputCondition       cond);
 173 static void catch_status                (gpointer                data,
 174                                          gint                    source,
 175                                          GdkInputCondition       cond);
 176
 177 static gchar *get_user_string           (const gchar    *action,
 178                                          ActionType      type);
 179
 180
 181 ActionType action_get_type(const gchar *action_str)
 182 {
 183         const gchar *p;
 184         ActionType action_type = ACTION_NONE;
 185
 186         g_return_val_if_fail(action_str,  ACTION_ERROR);
 187         g_return_val_if_fail(*action_str, ACTION_ERROR);
 188
 189         p = action_str;
 190
 191         if (p[0] == '|') {
 192                 action_type |= ACTION_PIPE_IN;
 193                 p++;
 194         } else if (p[0] == '>') {
 195                 action_type |= ACTION_USER_IN;
 196                 p++;
 197         } else if (p[0] == '*') {
 198                 action_type |= ACTION_USER_HIDDEN_IN;
 199                 p++;
 200         }
 201
 202         if (p[0] == '\0')
 203                 return ACTION_ERROR;
 204
 205         while (*p && action_type != ACTION_ERROR) {
 206                 if (p[0] == '%' && p[1]) {
 207                         switch (p[1]) {
 208                         case 'a':
 209                                 /* CLAWS: filtering action is a mutually exclusive
 210                                  * action. we can enable others if needed later. we
 211                                  * add ACTION_SINGLE | ACTION_MULTIPLE so it will
 212                                  * only be executed from the main window toolbar */
 213                                 if (p[2] == 's')  /* source messages */
 214                                         action_type = ACTION_FILTERING_ACTION
 215                                                     | ACTION_SINGLE
 216                                                     | ACTION_MULTIPLE;
 217                                 break;
 218                         case 'f':
 219                                 action_type |= ACTION_SINGLE;
 220                                 break;
 221                         case 'F':
 222                                 action_type |= ACTION_MULTIPLE;
 223                                 break;
 224                         case 'p':
 225                                 action_type |= ACTION_SINGLE;
 226                                 break;
 227                         case 's':
 228                                 action_type |= ACTION_SELECTION_STR;
 229                                 break;
 230                         case 'u':
 231                                 action_type |= ACTION_USER_STR;
 232                                 break;
 233                         case 'h':
 234                                 action_type |= ACTION_USER_HIDDEN_STR;
 235                                 break;
 236                         default:
 237                                 action_type = ACTION_ERROR;
 238                                 break;
 239                         }
 240                 } else if (p[0] == '|') {
 241                         if (p[1] == '\0')
 242                                 action_type |= ACTION_PIPE_OUT;
 243                 } else if (p[0] == '>') {
 244                         if (p[1] == '\0')
 245                                 action_type |= ACTION_INSERT;
 246                 } else if (p[0] == '&') {
 247                         if (p[1] == '\0')
 248                                 action_type |= ACTION_ASYNC;
 249                 }
 250                 p++;
 251         }
 252
 253         return action_type;
 254 }
 255
 256 static gchar *parse_action_cmd(gchar *action, MsgInfo *msginfo,
 257                                GSList *msg_list, MimeInfo *partinfo,
 258                                const gchar *user_str,
 259                                const gchar *user_hidden_str,
 260                                const gchar *sel_str)
 261 {
 262         GString *cmd;
 263         gchar *p;
 264         GSList *cur;
 265
 266         p = action;
 267
 268         if (p[0] == '|' || p[0] == '>' || p[0] == '*')
 269                 p++;
 270
 271         cmd = g_string_sized_new(strlen(action));
 272
 273         while (p[0] &&
 274                !((p[0] == '|' || p[0] == '>' || p[0] == '&') && !p[1])) {
 275                 if (p[0] == '%' && p[1]) {
 276                         switch (p[1]) {
 277                         case 'f':
 278                                 if (!parse_append_filename(cmd, msginfo)) {
 279                                         g_string_free(cmd, TRUE);
 280                                         return NULL;
 281                                 }
 282                                 p++;
 283                                 break;
 284                         case 'F':
 285                                 for (cur = msg_list; cur != NULL;
 286                                      cur = cur->next) {
 287                                         MsgInfo *msg = (MsgInfo *)cur->data;
 288
 289                                         if (!parse_append_filename(cmd, msg)) {
 290                                                 g_string_free(cmd, TRUE);
 291                                                 return NULL;
 292                                         }
 293                                         if (cur->next)
 294                                                 g_string_append_c(cmd, ' ');
 295                                 }
 296                                 p++;
 297                                 break;
 298                         case 'p':
 299                                 if (!parse_append_msgpart(cmd, msginfo,
 300                                                           partinfo)) {
 301                                         g_string_free(cmd, TRUE);
 302                                         return NULL;
 303                                 }
 304                                 p++;
 305                                 break;
 306                         case 's':
 307                                 if (sel_str)
 308                                         g_string_append(cmd, sel_str);
 309                                 p++;
 310                                 break;
 311                         case 'u':
 312                                 if (user_str)
 313                                         g_string_append(cmd, user_str);
 314                                 p++;
 315                                 break;
 316                         case 'h':
 317                                 if (user_hidden_str)
 318                                         g_string_append(cmd, user_hidden_str);
 319                                 p++;
 320                                 break;
 321                         default:
 322                                 g_string_append_c(cmd, p[0]);
 323                                 g_string_append_c(cmd, p[1]);
 324                                 p++;
 325                         }
 326                 } else {
 327                         g_string_append_c(cmd, p[0]);
 328                 }
 329                 p++;
 330         }
 331         if (cmd->len == 0) {
 332                 g_string_free(cmd, TRUE);
 333                 return NULL;
 334         }
 335
 336         p = cmd->str;
 337         g_string_free(cmd, FALSE);
 338         return p;
 339 }
 340
 341 static gboolean parse_append_filename(GString *cmd, MsgInfo *msginfo)
 342 {
 343         gchar *filename;
 344         gchar *p, *q;
 345         gchar escape_ch[] = "\\ ";
 346
 347         g_return_val_if_fail(msginfo, FALSE);
 348
 349         filename = procmsg_get_message_file(msginfo);
 350
 351         if (!filename) {
 352                 alertpanel_error(_("Could not get message file %d"),
 353                                  msginfo->msgnum);
 354                 return FALSE;
 355         }
 356
 357         p = filename;
 358         while ((q = strpbrk(p, "$\"`'\\ \t*?[]&|;<>()!#~")) != NULL) {
 359                 escape_ch[1] = *q;
 360                 *q = '\0';
 361                 g_string_append(cmd, p);
 362                 g_string_append(cmd, escape_ch);
 363                 p = q + 1;
 364         }
 365         g_string_append(cmd, p);
 366
 367         g_free(filename);
 368
 369         return TRUE;
 370 }
 371
 372 static gboolean parse_append_msgpart(GString *cmd, MsgInfo *msginfo,
 373                                      MimeInfo *partinfo)
 374 {
 375         gboolean single_part = FALSE;
 376         gchar *filename;
 377         gchar *part_filename;
 378         gint ret;
 379
 380         if (!partinfo) {
 381                 partinfo = procmime_scan_message(msginfo);
 382                 if (!partinfo) {
 383                         alertpanel_error(_("Could not get message part."));
 384                         return FALSE;
 385                 }
 386
 387                 single_part = TRUE;
 388         }
 389
 390         filename = procmsg_get_message_file_path(msginfo);
 391         part_filename = procmime_get_tmp_file_name(partinfo);
 392
 393         ret = procmime_get_part(part_filename, partinfo);
 394
 395         if (single_part)
 396                 procmime_mimeinfo_free_all(partinfo);
 397         g_free(filename);
 398
 399         if (ret < 0) {
 400                 alertpanel_error(_("Can't get part of multipart message"));
 401                 g_free(part_filename);
 402                 return FALSE;
 403         }
 404
 405         g_string_append(cmd, part_filename);
 406
 407         g_free(part_filename);
 408
 409         return TRUE;
 410 }
 411
 412 void actions_execute(gpointer data,
 413                      guint action_nb,
 414                      GtkWidget *widget,
 415                      gint source)
 416 {
 417         if (source == TOOLBAR_MAIN)
 418                 mainwin_actions_execute_cb((MainWindow*)data, action_nb, widget);
 419         else if (source == TOOLBAR_COMPOSE)
 420                 compose_actions_execute_cb((Compose*)data, action_nb, widget);
 421         else if (source == TOOLBAR_MSGVIEW)
 422                 msgview_actions_execute_cb((MessageView*)data, action_nb, widget);
 423 }
 424
 425 void action_update_mainwin_menu(GtkItemFactory *ifactory,
 426                                 gchar *branch_path,
 427                                 MainWindow *mainwin)
 428 {
 429         action_update_menu(ifactory, branch_path,
 430                            mainwin_actions_execute_cb, mainwin);
 431 }
 432
 433 void action_update_msgview_menu(GtkItemFactory *ifactory,
 434                                 gchar *branch_path,
 435                                 MessageView *msgview)
 436 {
 437         action_update_menu(ifactory, branch_path,
 438                            msgview_actions_execute_cb, msgview);
 439 }
 440
 441 void action_update_compose_menu(GtkItemFactory *ifactory,
 442                                 gchar *branch_path,
 443                                 Compose *compose)
 444 {
 445         action_update_menu(ifactory, branch_path,
 446                            compose_actions_execute_cb, compose);
 447 }
 448
 449 static void action_update_menu(GtkItemFactory *ifactory,
 450                                gchar *branch_path,
 451                                gpointer callback, gpointer data)
 452 {
 453         GtkWidget *menuitem;
 454         gchar *menu_path;
 455         GSList *cur;
 456         gchar *action, *action_p;
 457         GList *amenu;
 458         GtkItemFactoryEntry ifentry = {NULL, NULL, NULL, 0, "<Branch>"};
 459
 460         ifentry.path = branch_path;
 461         menuitem = gtk_item_factory_get_widget(ifactory, branch_path);
 462         g_return_if_fail(menuitem != NULL);
 463
 464         amenu = GTK_MENU_SHELL(menuitem)->children;
 465         while (amenu != NULL) {
 466                 GList *alist = amenu->next;
 467                 gtk_widget_destroy(GTK_WIDGET(amenu->data));
 468                 amenu = alist;
 469         }
 470
 471         ifentry.accelerator     = NULL;
 472         ifentry.callback_action = 0;
 473         ifentry.callback        = callback;
 474         ifentry.item_type       = NULL;
 475
 476         for (cur = prefs_common.actions_list; cur; cur = cur->next) {
 477                 action   = g_strdup((gchar *)cur->data);
 478                 action_p = strstr(action, ": ");
 479                 if (action_p && action_p[2] &&
 480                     (action_get_type(&action_p[2]) != ACTION_ERROR) &&
 481                     (action[0] != '/')) {
 482                         action_p[0] = '\0';
 483                         menu_path = g_strdup_printf("%s/%s", branch_path,
 484                                                     action);
 485                         ifentry.path = menu_path;
 486                         gtk_item_factory_create_item(ifactory, &ifentry, data,
 487                                                      1);
 488                         g_free(menu_path);
 489                 }
 490                 g_free(action);
 491                 ifentry.callback_action++;
 492         }
 493 }
 494
 495 static void compose_actions_execute_cb(Compose *compose, guint action_nb,
 496                                        GtkWidget *widget)
 497 {
 498         gchar *buf, *action;
 499         ActionType action_type;
 500
 501         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 502
 503         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 504         g_return_if_fail(buf != NULL);
 505         action = strstr(buf, ": ");
 506         g_return_if_fail(action != NULL);
 507
 508         /* Point to the beginning of the command-line */
 509         action += 2;
 510
 511         action_type = action_get_type(action);
 512         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE)) {
 513                 alertpanel_warning
 514                         (_("The selected action cannot be used in the compose window\n"
 515                            "because it contains %%f, %%F, %%as or %%p."));
 516                 return;
 517         }
 518
 519         execute_actions(action, NULL, compose->text, 0, NULL,
 520                 compose_action_cb, compose);
 521 }
 522
 523 static void mainwin_actions_execute_cb(MainWindow *mainwin, guint action_nb,
 524                                        GtkWidget *widget)
 525 {
 526         GSList *msg_list;
 527
 528         msg_list = summary_get_selected_msg_list(mainwin->summaryview);
 529         message_actions_execute(mainwin->messageview, action_nb, msg_list);
 530         g_slist_free(msg_list);
 531 }
 532
 533 static void msgview_actions_execute_cb(MessageView *msgview, guint action_nb,
 534                                        GtkWidget *widget)
 535 {
 536         GSList *msg_list = NULL;
 537
 538         if (msgview->msginfo)
 539                 msg_list = g_slist_append(msg_list, msgview->msginfo);
 540         message_actions_execute(msgview, action_nb, msg_list);
 541         g_slist_free(msg_list);
 542 }
 543
 544 static void message_actions_execute(MessageView *msgview, guint action_nb,
 545                                     GSList *msg_list)
 546 {
 547         TextView *textview;
 548         MimeInfo *partinfo;
 549         gchar *buf;
 550         gchar *action;
 551         GtkWidget *text = NULL;
 552         guint body_pos = 0;
 553         ActionType action_type;
 554
 555         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 556
 557         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 558
 559         g_return_if_fail(buf);
 560         g_return_if_fail((action = strstr(buf, ": ")));
 561
 562         /* Point to the beginning of the command-line */
 563         action += 2;
 564
 565         textview = messageview_get_current_textview(msgview);
 566         if (textview) {
 567                 text     = textview->text;
 568                 body_pos = textview->body_pos;
 569         }
 570         partinfo = messageview_get_selected_mime_part(msgview);
 571
 572         /* this command will alter the message text */
 573         action_type = action_get_type(action);
 574         if (action_type & (ACTION_PIPE_OUT | ACTION_INSERT))
 575                 msgview->filtered = TRUE;
 576
 577         if (action_type & ACTION_FILTERING_ACTION)
 578                 /* CLAWS: most of the above code is not necessary for applying
 579                  * filtering */
 580                 execute_filtering_actions(action, msg_list);
 581         else
 582                 execute_actions(action, msg_list, text, body_pos, partinfo,
 583                         NULL, NULL);
 584 }
 585
 586 static gboolean execute_filtering_actions(gchar *action, GSList *msglist)
 587 {
 588         GSList *action_list, *p;
 589         const gchar *sbegin, *send;
 590         gchar *action_string;
 591
 592         if (NULL == (sbegin = strstr2(action, "%as{")))
 593                 return FALSE;
 594         sbegin += sizeof "%as{" - 1;
 595         if (NULL == (send = strrchr(sbegin, '}')))
 596                 return FALSE;
 597         action_string = g_strndup(sbegin, send - sbegin);
 598
 599         action_list = matcher_parser_get_action_list(action_string);
 600         g_free(action_string);
 601         if (action_list == NULL) return FALSE;
 602
 603         /* apply actions on each message info */
 604         for (p = msglist; p && p->data; p = g_slist_next(p))
 605                 filteringaction_apply_action_list(action_list, (MsgInfo *) p->data);
 606
 607         for (p = action_list; p; p = g_slist_next(p))
 608                 if (p->data) filteringaction_free(p->data);
 609         g_slist_free(action_list);
 610         return TRUE;
 611 }
 612
 613 static gboolean execute_actions(gchar *action, GSList *msg_list,
 614                                 GtkWidget *text,
 615                                 gint body_pos, MimeInfo *partinfo,
 616                                 void (*callback)(void *data), void *data)
 617 {
 618         GSList *children_list = NULL;
 619         gint is_ok  = TRUE;
 620         gint msg_list_len;
 621         Children *children;
 622         ChildInfo *child_info;
 623         ActionType action_type;
 624         MsgInfo *msginfo;
 625         gchar *cmd;
 626         gchar *sel_str = NULL;
 627         gchar *msg_str = NULL;
 628         gchar *user_str = NULL;
 629         gchar *user_hidden_str = NULL;
 630         GtkTextIter start_iter, end_iter;
 631         gboolean is_selection = FALSE;
 632
 633         g_return_val_if_fail(action && *action, FALSE);
 634
 635         action_type = action_get_type(action);
 636
 637         if (action_type == ACTION_ERROR)
 638                 return FALSE;         /* ERR: syntax error */
 639
 640         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE) && !msg_list)
 641                 return FALSE;         /* ERR: file command without selection */
 642
 643         msg_list_len = g_slist_length(msg_list);
 644
 645         if (action_type & (ACTION_PIPE_OUT | ACTION_PIPE_IN | ACTION_INSERT)) {
 646                 if (msg_list_len > 1)
 647                         return FALSE; /* ERR: pipe + multiple selection */
 648                 if (!text)
 649                         return FALSE; /* ERR: pipe and no displayed text */
 650         }
 651
 652         if (action_type & ACTION_SELECTION_STR) {
 653                 if (!text)
 654                         return FALSE; /* ERR: selection string but no text */
 655         }
 656
 657         if (text) {
 658                 GtkTextBuffer *textbuf;
 659
 660                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 661                 is_selection = gtk_text_buffer_get_selection_bounds
 662                         (textbuf, &start_iter, &end_iter);
 663                 if (!is_selection) {
 664                         gtk_text_buffer_get_iter_at_offset
 665                                 (textbuf, &start_iter, body_pos);
 666                         gtk_text_buffer_get_end_iter(textbuf, &end_iter);
 667                 }
 668                 msg_str = gtk_text_buffer_get_text
 669                         (textbuf, &start_iter, &end_iter, FALSE);
 670                 if (is_selection)
 671                         sel_str = g_strdup(msg_str);
 672         }
 673
 674         if (action_type & ACTION_USER_STR) {
 675                 if (!(user_str = get_user_string(action, ACTION_USER_STR))) {
 676                         g_free(msg_str);
 677                         g_free(sel_str);
 678                         return FALSE;
 679                 }
 680         }
 681
 682         if (action_type & ACTION_USER_HIDDEN_STR) {
 683                 if (!(user_hidden_str =
 684                         get_user_string(action, ACTION_USER_HIDDEN_STR))) {
 685                         g_free(msg_str);
 686                         g_free(sel_str);
 687                         g_free(user_str);
 688                         return FALSE;
 689                 }
 690         }
 691
 692         if (text && (action_type & ACTION_PIPE_OUT)) {
 693                 GtkTextBuffer *textbuf;
 694                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 695                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
 696         }
 697
 698         children = g_new0(Children, 1);
 699
 700         children->action      = g_strdup(action);
 701         children->action_type = action_type;
 702         children->msg_text    = text;
 703         children->is_selection = is_selection;
 704
 705         if ((action_type & (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)) &&
 706             ((action_type & ACTION_SINGLE) == 0 || msg_list_len == 1))
 707                 children->open_in = 1;
 708
 709         if (action_type & ACTION_SINGLE) {
 710                 GSList *cur;
 711
 712                 for (cur = msg_list; cur && is_ok == TRUE; cur = cur->next) {
 713                         msginfo = (MsgInfo *)cur->data;
 714                         if (!msginfo) {
 715                                 is_ok  = FALSE; /* ERR: msginfo missing */
 716                                 break;
 717                         }
 718                         cmd = parse_action_cmd(action, msginfo, msg_list,
 719                                                partinfo, user_str,
 720                                                user_hidden_str, sel_str);
 721                         if (!cmd) {
 722                                 debug_print("Action command error\n");
 723                                 is_ok  = FALSE; /* ERR: incorrect command */
 724                                 break;
 725                         }
 726                         if ((child_info = fork_child(cmd, msg_str, children))) {
 727                                 children_list = g_slist_append(children_list,
 728                                                                child_info);
 729                         }
 730                         g_free(cmd);
 731                 }
 732         } else {
 733                 cmd = parse_action_cmd(action, NULL, msg_list, partinfo,
 734                                        user_str, user_hidden_str, sel_str);
 735                 if (cmd) {
 736                         if ((child_info = fork_child(cmd, msg_str, children))) {
 737                                 children_list = g_slist_append(children_list,
 738                                                                child_info);
 739                         }
 740                         g_free(cmd);
 741                 } else
 742                         is_ok  = FALSE;         /* ERR: incorrect command */
 743         }
 744
 745         g_free(msg_str);
 746         g_free(sel_str);
 747         g_free(user_str);
 748         g_free(user_hidden_str);
 749
 750         if (!children_list) {
 751                  /* If not waiting for children, return */
 752                 free_children(children);
 753         } else {
 754                 GSList *cur;
 755
 756                 children->list        = children_list;
 757                 children->nb          = g_slist_length(children_list);
 758                 children->initial_nb  = children->nb;
 759
 760                 for (cur = children_list; cur; cur = cur->next) {
 761                         child_info = (ChildInfo *) cur->data;
 762                         child_info->callback = callback;
 763                         child_info->data = data;
 764                         child_info->tag_status =
 765                                 gdk_input_add(child_info->chld_status,
 766                                               GDK_INPUT_READ,
 767                                               catch_status, child_info);
 768                 }
 769
 770                 create_io_dialog(children);
 771         }
 772         return is_ok;
 773 }
 774
 775 static ChildInfo *fork_child(gchar *cmd, const gchar *msg_str,
 776                              Children *children)
 777 {
 778 #ifdef G_OS_UNIX
 779         gint chld_in[2], chld_out[2], chld_err[2], chld_status[2];
 780         gchar *cmdline[4], *ret_str;
 781         pid_t pid, gch_pid;
 782         ChildInfo *child_info;
 783         gint sync;
 784         gssize by_written = 0, by_read = 0;
 785
 786         sync = !(children->action_type & ACTION_ASYNC);
 787
 788         chld_in[0] = chld_in[1] = chld_out[0] = chld_out[1] = chld_err[0]
 789                 = chld_err[1] = chld_status[0] = chld_status[1] = -1;
 790
 791         if (sync) {
 792                 if (pipe(chld_status) || pipe(chld_in) || pipe(chld_out) ||
 793                     pipe(chld_err)) {
 794                         alertpanel_error(_("Command could not be started. "
 795                                            "Pipe creation failed.\n%s"),
 796                                         g_strerror(errno));
 797                         /* Closing fd = -1 fails silently */
 798                         close(chld_in[0]);
 799                         close(chld_in[1]);
 800                         close(chld_out[0]);
 801                         close(chld_out[1]);
 802                         close(chld_err[0]);
 803                         close(chld_err[1]);
 804                         close(chld_status[0]);
 805                         close(chld_status[1]);
 806                         return NULL; /* Pipe error */
 807                 }
 808         }
 809
 810         debug_print("Forking child and grandchild.\n");
 811         debug_print("Executing: /bin/sh -c %s\n", cmd);
 812
 813         pid = fork();
 814         if (pid == 0) { /* Child */
 815                 if (setpgid(0, 0))
 816                         perror("setpgid");
 817
 818 #ifdef GDK_WINDOWING_X11
 819                 close(ConnectionNumber(gdk_display));
 820 #endif /* GDK_WINDOWING_X11 */
 821
 822                 gch_pid = fork();
 823
 824                 if (gch_pid == 0) {
 825                         if (setpgid(0, getppid()))
 826                                 perror("setpgid");
 827
 828                         if (sync) {
 829                                 if (children->action_type &
 830                                     (ACTION_PIPE_IN |
 831                                      ACTION_USER_IN |
 832                                      ACTION_USER_HIDDEN_IN)) {
 833                                         close(fileno(stdin));
 834                                         dup  (chld_in[0]);
 835                                 }
 836                                 close(chld_in[0]);
 837                                 close(chld_in[1]);
 838
 839                                 close(fileno(stdout));
 840                                 dup  (chld_out[1]);
 841                                 close(chld_out[0]);
 842                                 close(chld_out[1]);
 843
 844                                 close(fileno(stderr));
 845                                 dup  (chld_err[1]);
 846                                 close(chld_err[0]);
 847                                 close(chld_err[1]);
 848                         }
 849
 850                         cmdline[0] = "sh";
 851                         cmdline[1] = "-c";
 852                         ret_str = g_locale_from_utf8(cmd, strlen(cmd),
 853                                                      &by_read, &by_written,
 854                                                      NULL);
 855                         if (ret_str && by_written)
 856                                 cmdline[2] = ret_str;
 857                         else
 858                                 cmdline[2] = cmd;
 859                         cmdline[3] = NULL;
 860                         execvp("/bin/sh", cmdline);
 861
 862                         perror("execvp");
 863                         g_free(ret_str);
 864                         _exit(1);
 865                 } else if (gch_pid < (pid_t) 0) { /* Fork error */
 866                         if (sync)
 867                                 write(chld_status[1], "1\n", 2);
 868                         perror("fork");
 869                         _exit(1);
 870                 } else { /* Child */
 871                         if (sync) {
 872                                 close(chld_in[0]);
 873                                 close(chld_in[1]);
 874                                 close(chld_out[0]);
 875                                 close(chld_out[1]);
 876                                 close(chld_err[0]);
 877                                 close(chld_err[1]);
 878                                 close(chld_status[0]);
 879
 880                                 debug_print("Child: Waiting for grandchild\n");
 881                                 waitpid(gch_pid, NULL, 0);
 882                                 debug_print("Child: grandchild ended\n");
 883                                 write(chld_status[1], "0\n", 2);
 884                                 close(chld_status[1]);
 885                         }
 886                         _exit(0);
 887                 }
 888         } else if (pid < 0) { /* Fork error */
 889                 alertpanel_error(_("Could not fork to execute the following "
 890                                    "command:\n%s\n%s"),
 891                                  cmd, g_strerror(errno));
 892                 return NULL;
 893         }
 894
 895         /* Parent */
 896
 897         if (!sync) {
 898                 waitpid(pid, NULL, 0);
 899                 return NULL;
 900         }
 901
 902         close(chld_in[0]);
 903         if (!(children->action_type &
 904               (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 905                 close(chld_in[1]);
 906         close(chld_out[1]);
 907         close(chld_err[1]);
 908         close(chld_status[1]);
 909
 910         child_info = g_new0(ChildInfo, 1);
 911
 912         child_info->children    = children;
 913
 914         child_info->pid         = pid;
 915         child_info->cmd         = g_strdup(cmd);
 916         child_info->new_out     = FALSE;
 917         child_info->output      = g_string_new(NULL);
 918         child_info->chld_in     =
 919                 (children->action_type &
 920                  (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN))
 921                         ? chld_in [1] : -1;
 922         child_info->chld_out    = chld_out[0];
 923         child_info->chld_err    = chld_err[0];
 924         child_info->chld_status = chld_status[0];
 925         child_info->tag_in      = -1;
 926         child_info->tag_out     = gdk_input_add(chld_out[0], GDK_INPUT_READ,
 927                                                 catch_output, child_info);
 928         child_info->tag_err     = gdk_input_add(chld_err[0], GDK_INPUT_READ,
 929                                                 catch_output, child_info);
 930
 931         if (!(children->action_type &
 932               (ACTION_PIPE_IN | ACTION_PIPE_OUT | ACTION_INSERT)))
 933                 return child_info;
 934
 935         if ((children->action_type & ACTION_PIPE_IN) && msg_str) {
 936                 ret_str = g_locale_from_utf8(msg_str, strlen(msg_str),
 937                                              &by_read, &by_written, NULL);
 938                 if (ret_str && by_written) {
 939                         write(chld_in[1], ret_str, strlen(ret_str));
 940                         g_free(ret_str);
 941                 } else
 942                         write(chld_in[1], msg_str, strlen(msg_str));
 943                 if (!(children->action_type &
 944                       (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 945                         close(chld_in[1]);
 946                 child_info->chld_in = -1; /* No more input */
 947         }
 948
 949         return child_info;
 950 #else
 951         return NULL;
 952 #endif /* G_OS_UNIX */
 953 }
 954
 955 static void kill_children_cb(GtkWidget *widget, gpointer data)
 956 {
 957 #ifdef G_OS_UNIX
 958         GSList *cur;
 959         Children *children = (Children *) data;
 960         ChildInfo *child_info;
 961
 962         for (cur = children->list; cur; cur = cur->next) {
 963                 child_info = (ChildInfo *)(cur->data);
 964                 debug_print("Killing child group id %d\n", child_info->pid);
 965                 if (child_info->pid && kill(-child_info->pid, SIGTERM) < 0)
 966                         perror("kill");
 967         }
 968 #endif /* G_OS_UNIX */
 969 }
 970
 971 static gint wait_for_children(Children *children)
 972 {
 973         gboolean new_output;
 974         ChildInfo *child_info;
 975         GSList *cur;
 976         gint nb = children->nb;
 977
 978         children->nb = 0;
 979
 980         cur = children->list;
 981         new_output = FALSE;
 982         while (cur) {
 983                 child_info = (ChildInfo *)cur->data;
 984                 if (child_info->pid)
 985                         children->nb++;
 986                 new_output |= child_info->new_out;
 987                 cur = cur->next;
 988         }
 989
 990         children->output |= new_output;
 991
 992         if (new_output || (children->dialog && (nb != children->nb)))
 993                 update_io_dialog(children);
 994
 995         if (children->nb)
 996                 return FALSE;
 997
 998         if (!children->dialog) {
 999                 free_children(children);
1000         } else if (!children->output) {
1001                 gtk_widget_destroy(children->dialog);
1002         }
1003
1004         return FALSE;
1005 }
1006
1007 static void send_input(GtkWidget *w, gpointer data)
1008 {
1009         Children *children = (Children *) data;
1010         ChildInfo *child_info = (ChildInfo *) children->list->data;
1011
1012         child_info->tag_in = gdk_input_add(child_info->chld_in,
1013                                            GDK_INPUT_WRITE,
1014                                            catch_input, children);
1015         gtk_widget_set_sensitive(children->input_hbox, FALSE);
1016 }
1017
1018 static gint delete_io_dialog_cb(GtkWidget *w, GdkEvent *e, gpointer data)
1019 {
1020         hide_io_dialog_cb(w, data);
1021         return TRUE;
1022 }
1023
1024 static void hide_io_dialog_cb(GtkWidget *w, gpointer data)
1025 {
1026
1027         Children *children = (Children *)data;
1028
1029         if (!children->nb) {
1030                 g_signal_handlers_disconnect_matched
1031                         (G_OBJECT(children->dialog), G_SIGNAL_MATCH_DATA,
1032                          0, 0, NULL, NULL, children);
1033                 gtk_widget_destroy(children->dialog);
1034                 free_children(children);
1035         }
1036 }
1037
1038 static gint io_dialog_key_pressed_cb(GtkWidget *widget, GdkEventKey *event,
1039                                      gpointer data)
1040 {
1041         if (event && event->keyval == GDK_Escape)
1042                 hide_io_dialog_cb(widget, data);
1043         return TRUE;
1044 }
1045
1046 static void childinfo_close_pipes(ChildInfo *child_info)
1047 {
1048         /* stdout and stderr pipes are guaranteed to be removed by
1049          * their handler, but in case where we receive child exit notification
1050          * before grand-child's pipes closing signals, we check them and close
1051          * them if necessary
1052          */
1053         if (child_info->tag_in > 0)
1054                 gdk_input_remove(child_info->tag_in);
1055         if (child_info->tag_out > 0)
1056                 gdk_input_remove(child_info->tag_out);
1057         if (child_info->tag_err > 0)
1058                 gdk_input_remove(child_info->tag_err);
1059
1060         if (child_info->chld_in >= 0)
1061                 close(child_info->chld_in);
1062         if (child_info->chld_out >= 0)
1063                 close(child_info->chld_out);
1064         if (child_info->chld_err >= 0)
1065                 close(child_info->chld_err);
1066
1067         close(child_info->chld_status);
1068 }
1069
1070 static void free_children(Children *children)
1071 {
1072         ChildInfo *child_info;
1073         void (*callback)(void *data) = NULL;
1074         void *data = NULL;
1075
1076         debug_print("Freeing children data %p\n", children);
1077
1078         g_free(children->action);
1079         while (children->list != NULL) {
1080                 child_info = (ChildInfo *)children->list->data;
1081                 g_free(child_info->cmd);
1082                 g_string_free(child_info->output, TRUE);
1083                 children->list = g_slist_remove(children->list, child_info);
1084                 callback = child_info->callback;
1085                 data = child_info->data;
1086                 g_free(child_info);
1087         }
1088
1089         if (callback)
1090                 callback(data);
1091
1092         g_free(children);
1093 }
1094
1095 static void update_io_dialog(Children *children)
1096 {
1097         GSList *cur;
1098
1099         debug_print("Updating actions input/output dialog.\n");
1100
1101         if (children->progress_bar) {
1102                 gchar *text;
1103
1104                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(children->progress_bar),
1105                                               (gdouble) (children->initial_nb - children->nb) /
1106                                               (gdouble) children->initial_nb);
1107                 text = g_strdup_printf("%s %d/%d", _("Completed"),
1108                                        children->initial_nb - children->nb,
1109                                        children->initial_nb);
1110                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(children->progress_bar), text);
1111                 g_free(text);
1112         }
1113
1114         if (!children->nb) {
1115                 gtk_widget_set_sensitive(children->abort_btn, FALSE);
1116                 gtk_widget_set_sensitive(children->close_btn, TRUE);
1117                 if (children->input_hbox)
1118                         gtk_widget_set_sensitive(children->input_hbox, FALSE);
1119                 gtk_widget_grab_focus(children->close_btn);
1120                 g_signal_connect(G_OBJECT(children->dialog),
1121                                  "key_press_event",
1122                                  G_CALLBACK(io_dialog_key_pressed_cb),
1123                                  children);
1124         }
1125
1126         if (children->output) {
1127                 GtkWidget *text = children->text;
1128                 GtkTextBuffer *textbuf;
1129                 GtkTextIter iter, start_iter, end_iter;
1130                 gchar *caption;
1131                 ChildInfo *child_info;
1132
1133                 gtk_widget_show(children->scrolledwin);
1134                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
1135                 gtk_text_buffer_get_bounds(textbuf, &start_iter, &end_iter);
1136                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
1137                 gtk_text_buffer_get_start_iter(textbuf, &iter);
1138
1139                 for (cur = children->list; cur; cur = cur->next) {
1140                         child_info = (ChildInfo *)cur->data;
1141                         if (child_info->pid)
1142                                 caption = g_strdup_printf
1143                                         (_("--- Running: %s\n"),
1144                                          child_info->cmd);
1145                         else
1146                                 caption = g_strdup_printf
1147                                         (_("--- Ended: %s\n"),
1148                                          child_info->cmd);
1149
1150                         gtk_text_buffer_insert(textbuf, &iter, caption, -1);
1151                         gtk_text_buffer_insert(textbuf, &iter,
1152                                                child_info->output->str, -1);
1153                         g_free(caption);
1154                         child_info->new_out = FALSE;
1155                 }
1156         }
1157 }
1158
1159 static void create_io_dialog(Children *children)
1160 {
1161         GtkWidget *dialog;
1162         GtkWidget *vbox;
1163         GtkWidget *entry = NULL;
1164         GtkWidget *input_hbox = NULL;
1165         GtkWidget *send_button;
1166         GtkWidget *label;
1167         GtkWidget *text;
1168         GtkWidget *scrolledwin;
1169         GtkWidget *hbox;
1170         GtkWidget *progress_bar = NULL;
1171         GtkWidget *abort_button;
1172         GtkWidget *close_button;
1173
1174         debug_print("Creating action IO dialog\n");
1175
1176         dialog = gtk_dialog_new();
1177         gtk_container_set_border_width
1178                 (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);
1179         gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
1180         gtk_window_set_title(GTK_WINDOW(dialog), _("Action's input/output"));
1181         gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
1182         manage_window_set_transient(GTK_WINDOW(dialog));
1183         g_signal_connect(G_OBJECT(dialog), "delete_event",
1184                          G_CALLBACK(delete_io_dialog_cb), children);
1185         g_signal_connect(G_OBJECT(dialog), "destroy",
1186                          G_CALLBACK(hide_io_dialog_cb),
1187                          children);
1188
1189         vbox = gtk_vbox_new(FALSE, 8);
1190         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);
1191         gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
1192         gtk_widget_show(vbox);
1193
1194         label = gtk_label_new(children->action);
1195         gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
1196         gtk_widget_show(label);
1197
1198         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
1199         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
1200                                        GTK_POLICY_AUTOMATIC,
1201                                        GTK_POLICY_AUTOMATIC);
1202         gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),
1203                                             GTK_SHADOW_IN);
1204         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin, TRUE, TRUE, 0);
1205         gtk_widget_set_size_request(scrolledwin, 560, 200);
1206         gtk_widget_hide(scrolledwin);
1207
1208         text = gtk_text_view_new();
1209
1210         if (prefs_common.textfont) {
1211                 PangoFontDescription *font_desc;
1212                 font_desc = pango_font_description_from_string
1213                         (prefs_common.textfont);
1214                 if (font_desc) {
1215                         gtk_widget_modify_font(text, font_desc);
1216                         pango_font_description_free(font_desc);
1217                 }
1218         }
1219
1220         gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
1221         gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text), GTK_WRAP_WORD);
1222         gtk_text_view_set_left_margin(GTK_TEXT_VIEW(text), 6);
1223         gtk_text_view_set_right_margin(GTK_TEXT_VIEW(text), 6);
1224         gtk_container_add(GTK_CONTAINER(scrolledwin), text);
1225         gtk_widget_show(text);
1226
1227         if (children->open_in) {
1228                 input_hbox = gtk_hbox_new(FALSE, 8);
1229                 gtk_widget_show(input_hbox);
1230
1231                 entry = gtk_entry_new();
1232                 gtk_widget_set_size_request(entry, 320, -1);
1233                 g_signal_connect(G_OBJECT(entry), "activate",
1234                                  G_CALLBACK(send_input), children);
1235                 gtk_box_pack_start(GTK_BOX(input_hbox), entry, TRUE, TRUE, 0);
1236                 if (children->action_type & ACTION_USER_HIDDEN_IN)
1237                         gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
1238                 gtk_widget_show(entry);
1239
1240                 send_button = gtk_button_new_from_stock(GTK_STOCK_EXECUTE);
1241                 g_signal_connect(G_OBJECT(send_button), "clicked",
1242                                  G_CALLBACK(send_input), children);
1243                 gtk_box_pack_start(GTK_BOX(input_hbox), send_button, FALSE,
1244                                    FALSE, 0);
1245                 gtk_widget_show(send_button);
1246
1247                 gtk_box_pack_start(GTK_BOX(vbox), input_hbox, FALSE, FALSE, 0);
1248                 gtk_widget_grab_focus(entry);
1249         }
1250
1251         if (children->initial_nb > 1) {
1252                 gchar * text;
1253
1254                 progress_bar = gtk_progress_bar_new();
1255                 gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(progress_bar),
1256                                 GTK_PROGRESS_LEFT_TO_RIGHT);
1257                 text = g_strdup_printf("%s 0/%d\n", _("Completed"),
1258                                        children->initial_nb);
1259                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar),
1260                                           text);
1261                 g_free(text);
1262                 gtk_box_pack_start(GTK_BOX(vbox), progress_bar, FALSE, FALSE, 0);
1263                 gtk_widget_show(progress_bar);
1264         }
1265
1266         gtkut_stock_button_set_create(&hbox, &abort_button, GTK_STOCK_STOP,
1267                                       &close_button, GTK_STOCK_CLOSE, NULL, NULL);
1268         g_signal_connect(G_OBJECT(abort_button), "clicked",
1269                          G_CALLBACK(kill_children_cb), children);
1270         g_signal_connect(G_OBJECT(close_button), "clicked",
1271                          G_CALLBACK(hide_io_dialog_cb), children);
1272         gtk_widget_show(hbox);
1273
1274         if (children->nb)
1275                 gtk_widget_set_sensitive(close_button, FALSE);
1276
1277         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), hbox);
1278
1279         children->dialog       = dialog;
1280         children->scrolledwin  = scrolledwin;
1281         children->text         = text;
1282         children->input_hbox   = children->open_in ? input_hbox : NULL;
1283         children->input_entry  = children->open_in ? entry : NULL;
1284         children->progress_bar = progress_bar;
1285         children->abort_btn    = abort_button;
1286         children->close_btn    = close_button;
1287
1288         gtk_widget_show(dialog);
1289 }
1290
1291 static void catch_status(gpointer data, gint source, GdkInputCondition cond)
1292 {
1293         ChildInfo *child_info = (ChildInfo *)data;
1294         gchar buf;
1295         gint c;
1296
1297         gdk_input_remove(child_info->tag_status);
1298
1299         c = read(source, &buf, 1);
1300         debug_print("Child returned %c\n", buf);
1301
1302 #ifdef G_OS_UNIX
1303         waitpid(-child_info->pid, NULL, 0);
1304 #endif
1305         childinfo_close_pipes(child_info);
1306         child_info->pid = 0;
1307
1308         wait_for_children(child_info->children);
1309 }
1310
1311 static void catch_input(gpointer data, gint source, GdkInputCondition cond)
1312 {
1313         Children *children = (Children *)data;
1314         ChildInfo *child_info = (ChildInfo *)children->list->data;
1315         gchar *input, *ret_str;
1316         gint c, count, len;
1317         gssize by_read = 0, by_written = 0;
1318
1319         debug_print("Sending input to grand child.\n");
1320         if (!(cond && GDK_INPUT_WRITE))
1321                 return;
1322
1323         gdk_input_remove(child_info->tag_in);
1324         child_info->tag_in = -1;
1325
1326         input = gtk_editable_get_chars(GTK_EDITABLE(children->input_entry),
1327                                        0, -1);
1328         ret_str = g_locale_from_utf8(input, strlen(input), &by_read,
1329                                      &by_written, NULL);
1330         if (ret_str && by_written) {
1331                 g_free(input);
1332                 input = ret_str;
1333         }
1334
1335         len = strlen(input);
1336         count = 0;
1337
1338         do {
1339                 c = write(child_info->chld_in, input + count, len - count);
1340                 if (c >= 0)
1341                         count += c;
1342         } while (c >= 0 && count < len);
1343
1344         if (c >= 0)
1345                 write(child_info->chld_in, "\n", 2);
1346
1347         g_free(input);
1348
1349         gtk_entry_set_text(GTK_ENTRY(children->input_entry), "");
1350         gtk_widget_set_sensitive(children->input_hbox, TRUE);
1351         close(child_info->chld_in);
1352         child_info->chld_in = -1;
1353         debug_print("Input to grand child sent.\n");
1354 }
1355
1356 static void catch_output(gpointer data, gint source, GdkInputCondition cond)
1357 {
1358         ChildInfo *child_info = (ChildInfo *)data;
1359         gint c;
1360         gchar buf[BUFFSIZE];
1361
1362         debug_print("Catching grand child's output.\n");
1363         if (child_info->children->action_type &
1364             (ACTION_PIPE_OUT | ACTION_INSERT)
1365             && source == child_info->chld_out) {
1366                 GtkTextView *text =
1367                         GTK_TEXT_VIEW(child_info->children->msg_text);
1368                 GtkTextBuffer *textbuf = gtk_text_view_get_buffer(text);
1369                 GtkTextIter iter;
1370                 GtkTextMark *mark;
1371                 gint ins_pos;
1372
1373                 mark = gtk_text_buffer_get_insert(textbuf);
1374                 gtk_text_buffer_get_iter_at_mark(textbuf, &iter, mark);
1375                 ins_pos = gtk_text_iter_get_offset(&iter);
1376
1377                 while (TRUE) {
1378                         gsize bytes_read = 0, bytes_written = 0;
1379                         gchar *ret_str;
1380
1381                         c = read(source, buf, sizeof(buf) - 1);
1382                         if (c == 0)
1383                                 break;
1384
1385                         ret_str = g_locale_to_utf8
1386                                 (buf, c, &bytes_read, &bytes_written, NULL);
1387                         if (ret_str && bytes_written > 0) {
1388                                 gtk_text_buffer_insert
1389                                         (textbuf, &iter, ret_str,
1390                                          bytes_written);
1391                                 g_free(ret_str);
1392                         } else
1393                                 gtk_text_buffer_insert(textbuf, &iter, buf, c);
1394                 }
1395
1396                 if (child_info->children->is_selection) {
1397                         GtkTextIter ins;
1398
1399                         gtk_text_buffer_get_iter_at_offset
1400                                 (textbuf, &ins, ins_pos);
1401                         gtk_text_buffer_select_range(textbuf, &ins, &iter);
1402                 }
1403         } else {
1404                 c = read(source, buf, sizeof(buf) - 1);
1405                 if (c > 0) {
1406                         gsize bytes_read = 0, bytes_written = 0;
1407                         gchar *ret_str;
1408
1409                         ret_str = g_locale_to_utf8
1410                                 (buf, c, &bytes_read, &bytes_written, NULL);
1411                         if (ret_str && bytes_written > 0) {
1412                                 g_string_append_len
1413                                         (child_info->output, ret_str,
1414                                          bytes_written);
1415                                 g_free(ret_str);
1416                         } else
1417                                 g_string_append_len(child_info->output, buf, c);
1418
1419                         child_info->new_out = TRUE;
1420                 }
1421         }
1422         if (c == 0) {
1423                 if (source == child_info->chld_out) {
1424                         gdk_input_remove(child_info->tag_out);
1425                         child_info->tag_out = -1;
1426                         close(child_info->chld_out);
1427                         child_info->chld_out = -1;
1428                 } else {
1429                         gdk_input_remove(child_info->tag_err);
1430                         child_info->tag_err = -1;
1431                         close(child_info->chld_err);
1432                         child_info->chld_err = -1;
1433                 }
1434         }
1435
1436         wait_for_children(child_info->children);
1437 }
1438
1439 static gchar *get_user_string(const gchar *action, ActionType type)
1440 {
1441         gchar *message;
1442         gchar *user_str = NULL;
1443
1444         switch (type) {
1445         case ACTION_USER_HIDDEN_STR:
1446                 message = g_strdup_printf
1447                         (_("Enter the argument for the following action:\n"
1448                            "('%%h' will be replaced with the argument)\n"
1449                            "  %s"),
1450                          action);
1451                 user_str = input_dialog_with_invisible
1452                         (_("Action's hidden user argument"), message, NULL);
1453                 break;
1454         case ACTION_USER_STR:
1455                 message = g_strdup_printf
1456                         (_("Enter the argument for the following action:\n"
1457                            "('%%u' will be replaced with the argument)\n"
1458                            "  %s"),
1459                          action);
1460                 user_str = input_dialog
1461                         (_("Action's user argument"), message, NULL);
1462                 break;
1463         default:
1464                 g_warning("Unsupported action type %d", type);
1465         }
1466
1467         return user_str;
1468 }