src/action.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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., 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 <gtk/gtk.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #ifdef GDK_WINDOWING_X11
  30 #       include <gdk/gdkx.h>
  31 #endif /* GDK_WINDOWING_X11 */
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <errno.h>
  36 #include <sys/types.h>
  37 #include <sys/wait.h>
  38 #include <signal.h>
  39 #include <unistd.h>
  40
  41 #include "intl.h"
  42 #include "utils.h"
  43 #include "gtkutils.h"
  44 #include "manage_window.h"
  45 #include "mainwindow.h"
  46 #include "prefs_common.h"
  47 #include "alertpanel.h"
  48 #include "inputdialog.h"
  49 #include "action.h"
  50 #include "compose.h"
  51 #include "procmsg.h"
  52 #include "textview.h"
  53 #include "matcher_parser.h" /* CLAWS */
  54 #include "filtering.h"
  55
  56 typedef struct _Children                Children;
  57 typedef struct _ChildInfo               ChildInfo;
  58 typedef struct _UserStringDialog        UserStringDialog;
  59
  60 struct _Children
  61 {
  62         GtkWidget       *dialog;
  63         GtkWidget       *text;
  64         GtkWidget       *input_entry;
  65         GtkWidget       *input_hbox;
  66         GtkWidget       *progress_bar;
  67         GtkWidget       *abort_btn;
  68         GtkWidget       *close_btn;
  69         GtkWidget       *scrolledwin;
  70
  71         gchar           *action;
  72         ActionType       action_type;
  73         GSList          *list;
  74         gint             nb;
  75         gint             initial_nb;
  76         gint             open_in;
  77         gboolean         output;
  78
  79         GtkWidget       *msg_text;
  80
  81         gboolean         is_selection;
  82 };
  83
  84 struct _ChildInfo
  85 {
  86         Children        *children;
  87         gchar           *cmd;
  88         pid_t            pid;
  89         gint             chld_in;
  90         gint             chld_out;
  91         gint             chld_err;
  92         gint             chld_status;
  93         gint             tag_in;
  94         gint             tag_out;
  95         gint             tag_err;
  96         gint             tag_status;
  97         gint             new_out;
  98
  99         GString         *output;
 100 };
 101
 102 static void action_update_menu          (GtkItemFactory *ifactory,
 103                                          gchar          *branch_path,
 104                                          gpointer        callback,
 105                                          gpointer        data);
 106 static void compose_actions_execute_cb  (Compose        *compose,
 107                                          guint           action_nb,
 108                                          GtkWidget      *widget);
 109 static void mainwin_actions_execute_cb  (MainWindow     *mainwin,
 110                                          guint           action_nb,
 111                                          GtkWidget      *widget);
 112 static void msgview_actions_execute_cb  (MessageView    *msgview,
 113                                          guint           action_nb,
 114                                          GtkWidget      *widget);
 115 static void message_actions_execute     (MessageView    *msgview,
 116                                          guint           action_nb,
 117                                          GSList         *msg_list);
 118
 119 static gboolean execute_filtering_actions(gchar         *action,
 120                                           GSList        *msglist);
 121
 122 static gboolean execute_actions         (gchar          *action,
 123                                          GSList         *msg_list,
 124                                          GtkWidget      *text,
 125                                          gint            body_pos,
 126                                          MimeInfo       *partinfo);
 127
 128 static gchar *parse_action_cmd          (gchar          *action,
 129                                          MsgInfo        *msginfo,
 130                                          GSList         *msg_list,
 131                                          MimeInfo       *partinfo,
 132                                          const gchar    *user_str,
 133                                          const gchar    *user_hidden_str,
 134                                          const gchar    *sel_str);
 135 static gboolean parse_append_filename   (GString        *cmd,
 136                                          MsgInfo        *msginfo);
 137
 138 static gboolean parse_append_msgpart    (GString        *cmd,
 139                                          MsgInfo        *msginfo,
 140                                          MimeInfo       *partinfo);
 141
 142 static ChildInfo *fork_child            (gchar          *cmd,
 143                                          const gchar    *msg_str,
 144                                          Children       *children);
 145
 146 static gint wait_for_children           (Children       *children);
 147
 148 static void free_children               (Children       *children);
 149
 150 static void childinfo_close_pipes       (ChildInfo      *child_info);
 151
 152 static void create_io_dialog            (Children       *children);
 153 static void update_io_dialog            (Children       *children);
 154
 155 static void hide_io_dialog_cb           (GtkWidget      *widget,
 156                                          gpointer        data);
 157 static gint io_dialog_key_pressed_cb    (GtkWidget      *widget,
 158                                          GdkEventKey    *event,
 159                                          gpointer        data);
 160
 161 static void catch_output                (gpointer                data,
 162                                          gint                    source,
 163                                          GdkInputCondition       cond);
 164 static void catch_input                 (gpointer                data,
 165                                          gint                    source,
 166                                          GdkInputCondition       cond);
 167 static void catch_status                (gpointer                data,
 168                                          gint                    source,
 169                                          GdkInputCondition       cond);
 170
 171 static gchar *get_user_string           (const gchar    *action,
 172                                          ActionType      type);
 173
 174
 175 ActionType action_get_type(const gchar *action_str)
 176 {
 177         const gchar *p;
 178         ActionType action_type = ACTION_NONE;
 179
 180         g_return_val_if_fail(action_str,  ACTION_ERROR);
 181         g_return_val_if_fail(*action_str, ACTION_ERROR);
 182
 183         p = action_str;
 184
 185         if (p[0] == '|') {
 186                 action_type |= ACTION_PIPE_IN;
 187                 p++;
 188         } else if (p[0] == '>') {
 189                 action_type |= ACTION_USER_IN;
 190                 p++;
 191         } else if (p[0] == '*') {
 192                 action_type |= ACTION_USER_HIDDEN_IN;
 193                 p++;
 194         }
 195
 196         if (p[0] == '\0')
 197                 return ACTION_ERROR;
 198
 199         while (*p && action_type != ACTION_ERROR) {
 200                 if (p[0] == '%' && p[1]) {
 201                         switch (p[1]) {
 202                         case 'a':
 203                                 /* CLAWS: filtering action is a mutually exclusive
 204                                  * action. we can enable others if needed later. we
 205                                  * add ACTION_SINGLE | ACTION_MULTIPLE so it will
 206                                  * only be executed from the main window toolbar */
 207                                 if (p[2] == 's')  /* source messages */
 208                                         action_type = ACTION_FILTERING_ACTION
 209                                                     | ACTION_SINGLE
 210                                                     | ACTION_MULTIPLE;
 211                                 break;
 212                         case 'f':
 213                                 action_type |= ACTION_SINGLE;
 214                                 break;
 215                         case 'F':
 216                                 action_type |= ACTION_MULTIPLE;
 217                                 break;
 218                         case 'p':
 219                                 action_type |= ACTION_SINGLE;
 220                                 break;
 221                         case 's':
 222                                 action_type |= ACTION_SELECTION_STR;
 223                                 break;
 224                         case 'u':
 225                                 action_type |= ACTION_USER_STR;
 226                                 break;
 227                         case 'h':
 228                                 action_type |= ACTION_USER_HIDDEN_STR;
 229                                 break;
 230                         default:
 231                                 action_type = ACTION_ERROR;
 232                                 break;
 233                         }
 234                 } else if (p[0] == '|') {
 235                         if (p[1] == '\0')
 236                                 action_type |= ACTION_PIPE_OUT;
 237                 } else if (p[0] == '>') {
 238                         if (p[1] == '\0')
 239                                 action_type |= ACTION_INSERT;
 240                 } else if (p[0] == '&') {
 241                         if (p[1] == '\0')
 242                                 action_type |= ACTION_ASYNC;
 243                 }
 244                 p++;
 245         }
 246
 247         return action_type;
 248 }
 249
 250 static gchar *parse_action_cmd(gchar *action, MsgInfo *msginfo,
 251                                GSList *msg_list, MimeInfo *partinfo,
 252                                const gchar *user_str,
 253                                const gchar *user_hidden_str,
 254                                const gchar *sel_str)
 255 {
 256         GString *cmd;
 257         gchar *p;
 258         GSList *cur;
 259
 260         p = action;
 261
 262         if (p[0] == '|' || p[0] == '>' || p[0] == '*')
 263                 p++;
 264
 265         cmd = g_string_sized_new(strlen(action));
 266
 267         while (p[0] &&
 268                !((p[0] == '|' || p[0] == '>' || p[0] == '&') && !p[1])) {
 269                 if (p[0] == '%' && p[1]) {
 270                         switch (p[1]) {
 271                         case 'f':
 272                                 if (!parse_append_filename(cmd, msginfo)) {
 273                                         g_string_free(cmd, TRUE);
 274                                         return NULL;
 275                                 }
 276                                 p++;
 277                                 break;
 278                         case 'F':
 279                                 for (cur = msg_list; cur != NULL;
 280                                      cur = cur->next) {
 281                                         MsgInfo *msg = (MsgInfo *)cur->data;
 282
 283                                         if (!parse_append_filename(cmd, msg)) {
 284                                                 g_string_free(cmd, TRUE);
 285                                                 return NULL;
 286                                         }
 287                                         if (cur->next)
 288                                                 g_string_append_c(cmd, ' ');
 289                                 }
 290                                 p++;
 291                                 break;
 292                         case 'p':
 293                                 if (!parse_append_msgpart(cmd, msginfo,
 294                                                           partinfo)) {
 295                                         g_string_free(cmd, TRUE);
 296                                         return NULL;
 297                                 }
 298                                 p++;
 299                                 break;
 300                         case 's':
 301                                 if (sel_str)
 302                                         g_string_append(cmd, sel_str);
 303                                 p++;
 304                                 break;
 305                         case 'u':
 306                                 if (user_str)
 307                                         g_string_append(cmd, user_str);
 308                                 p++;
 309                                 break;
 310                         case 'h':
 311                                 if (user_hidden_str)
 312                                         g_string_append(cmd, user_hidden_str);
 313                                 p++;
 314                                 break;
 315                         default:
 316                                 g_string_append_c(cmd, p[0]);
 317                                 g_string_append_c(cmd, p[1]);
 318                                 p++;
 319                         }
 320                 } else {
 321                         g_string_append_c(cmd, p[0]);
 322                 }
 323                 p++;
 324         }
 325         if (cmd->len == 0) {
 326                 g_string_free(cmd, TRUE);
 327                 return NULL;
 328         }
 329
 330         p = cmd->str;
 331         g_string_free(cmd, FALSE);
 332         return p;
 333 }
 334
 335 static gboolean parse_append_filename(GString *cmd, MsgInfo *msginfo)
 336 {
 337         gchar *filename;
 338         gchar *p;
 339
 340         g_return_val_if_fail(msginfo, FALSE);
 341
 342         filename = procmsg_get_message_file(msginfo);
 343
 344         if (filename) {
 345                 g_string_append_c(cmd, '"');
 346                 for (p = filename; *p != '\0'; p++) {
 347                         switch (*p) {
 348                         case '$':
 349                         case '"':
 350                         case '`':
 351                         case '\\':
 352                                 g_string_append_c(cmd, '\\');
 353                                 break;
 354                         default:
 355                                 break;
 356                         }
 357                         g_string_append_c(cmd, *p);
 358                 }
 359                 g_string_append_c(cmd, '"');
 360                 g_free(filename);
 361         } else {
 362                 alertpanel_error(_("Could not get message file %d"),
 363                                  msginfo->msgnum);
 364                 return FALSE;
 365         }
 366
 367         return TRUE;
 368 }
 369
 370 static gboolean parse_append_msgpart(GString *cmd, MsgInfo *msginfo,
 371                                      MimeInfo *partinfo)
 372 {
 373         gboolean single_part = FALSE;
 374         gchar *filename;
 375         gchar *part_filename;
 376         gint ret;
 377
 378         if (!partinfo) {
 379                 partinfo = procmime_scan_message(msginfo);
 380                 if (!partinfo) {
 381                         alertpanel_error(_("Could not get message part."));
 382                         return FALSE;
 383                 }
 384
 385                 single_part = TRUE;
 386         }
 387
 388         filename = procmsg_get_message_file_path(msginfo);
 389         part_filename = procmime_get_tmp_file_name(partinfo);
 390
 391         ret = procmime_get_part(part_filename, partinfo);
 392
 393         if (single_part)
 394                 procmime_mimeinfo_free_all(partinfo);
 395         g_free(filename);
 396
 397         if (ret < 0) {
 398                 alertpanel_error(_("Can't get part of multipart message"));
 399                 g_free(part_filename);
 400                 return FALSE;
 401         }
 402
 403         g_string_append(cmd, part_filename);
 404
 405         g_free(part_filename);
 406
 407         return TRUE;
 408 }
 409
 410 void actions_execute(gpointer data,
 411                      guint action_nb,
 412                      GtkWidget *widget,
 413                      gint source)
 414 {
 415         if (source == TOOLBAR_MAIN)
 416                 mainwin_actions_execute_cb((MainWindow*)data, action_nb, widget);
 417         else if (source == TOOLBAR_COMPOSE)
 418                 compose_actions_execute_cb((Compose*)data, action_nb, widget);
 419         else if (source == TOOLBAR_MSGVIEW)
 420                 msgview_actions_execute_cb((MessageView*)data, action_nb, widget);
 421 }
 422
 423 void action_update_mainwin_menu(GtkItemFactory *ifactory,
 424                                 gchar *branch_path,
 425                                 MainWindow *mainwin)
 426 {
 427         action_update_menu(ifactory, branch_path,
 428                            mainwin_actions_execute_cb, mainwin);
 429 }
 430
 431 void action_update_msgview_menu(GtkItemFactory *ifactory,
 432                                 gchar *branch_path,
 433                                 MessageView *msgview)
 434 {
 435         action_update_menu(ifactory, branch_path,
 436                            msgview_actions_execute_cb, msgview);
 437 }
 438
 439 void action_update_compose_menu(GtkItemFactory *ifactory,
 440                                 gchar *branch_path,
 441                                 Compose *compose)
 442 {
 443         action_update_menu(ifactory, branch_path,
 444                            compose_actions_execute_cb, compose);
 445 }
 446
 447 static void action_update_menu(GtkItemFactory *ifactory,
 448                                gchar *branch_path,
 449                                gpointer callback, gpointer data)
 450 {
 451         GtkWidget *menuitem;
 452         gchar *menu_path;
 453         GSList *cur;
 454         gchar *action, *action_p;
 455         GList *amenu;
 456         GtkItemFactoryEntry ifentry = {NULL, NULL, NULL, 0, "<Branch>"};
 457
 458         ifentry.path = branch_path;
 459         menuitem = gtk_item_factory_get_widget(ifactory, branch_path);
 460         g_return_if_fail(menuitem != NULL);
 461
 462         amenu = GTK_MENU_SHELL(menuitem)->children;
 463         while (amenu != NULL) {
 464                 GList *alist = amenu->next;
 465                 gtk_widget_destroy(GTK_WIDGET(amenu->data));
 466                 amenu = alist;
 467         }
 468
 469         ifentry.accelerator     = NULL;
 470         ifentry.callback_action = 0;
 471         ifentry.callback        = callback;
 472         ifentry.item_type       = NULL;
 473
 474         for (cur = prefs_common.actions_list; cur; cur = cur->next) {
 475                 action   = g_strdup((gchar *)cur->data);
 476                 action_p = strstr(action, ": ");
 477                 if (action_p && action_p[2] &&
 478                     action_get_type(&action_p[2]) != ACTION_ERROR) {
 479                         action_p[0] = '\0';
 480                         menu_path = g_strdup_printf("%s/%s", branch_path,
 481                                                     action);
 482                         ifentry.path = menu_path;
 483                         gtk_item_factory_create_item(ifactory, &ifentry, data,
 484                                                      1);
 485                         g_free(menu_path);
 486                 }
 487                 g_free(action);
 488                 ifentry.callback_action++;
 489         }
 490 }
 491
 492 static void compose_actions_execute_cb(Compose *compose, guint action_nb,
 493                                        GtkWidget *widget)
 494 {
 495         gchar *buf, *action;
 496         ActionType action_type;
 497
 498         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 499
 500         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 501         g_return_if_fail(buf != NULL);
 502         action = strstr(buf, ": ");
 503         g_return_if_fail(action != NULL);
 504
 505         /* Point to the beginning of the command-line */
 506         action += 2;
 507
 508         action_type = action_get_type(action);
 509         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE)) {
 510                 alertpanel_warning
 511                         (_("The selected action cannot be used in the compose window\n"
 512                            "because it contains %%f, %%F, %%as or %%p."));
 513                 return;
 514         }
 515
 516         execute_actions(action, NULL, compose->text, 0, NULL);
 517 }
 518
 519 static void mainwin_actions_execute_cb(MainWindow *mainwin, guint action_nb,
 520                                        GtkWidget *widget)
 521 {
 522         GSList *msg_list;
 523
 524         msg_list = summary_get_selected_msg_list(mainwin->summaryview);
 525         message_actions_execute(mainwin->messageview, action_nb, msg_list);
 526         g_slist_free(msg_list);
 527 }
 528
 529 static void msgview_actions_execute_cb(MessageView *msgview, guint action_nb,
 530                                        GtkWidget *widget)
 531 {
 532         GSList *msg_list = NULL;
 533
 534         if (msgview->msginfo)
 535                 msg_list = g_slist_append(msg_list, msgview->msginfo);
 536         message_actions_execute(msgview, action_nb, msg_list);
 537         g_slist_free(msg_list);
 538 }
 539
 540 static void message_actions_execute(MessageView *msgview, guint action_nb,
 541                                     GSList *msg_list)
 542 {
 543         TextView *textview;
 544         MimeInfo *partinfo;
 545         gchar *buf;
 546         gchar *action;
 547         GtkWidget *text = NULL;
 548         guint body_pos = 0;
 549         ActionType action_type;
 550
 551         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 552
 553         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 554
 555         g_return_if_fail(buf);
 556         g_return_if_fail((action = strstr(buf, ": ")));
 557
 558         /* Point to the beginning of the command-line */
 559         action += 2;
 560
 561         textview = messageview_get_current_textview(msgview);
 562         if (textview) {
 563                 text     = textview->text;
 564                 body_pos = textview->body_pos;
 565         }
 566         partinfo = messageview_get_selected_mime_part(msgview);
 567
 568         /* this command will alter the message text */
 569         action_type = action_get_type(action);
 570         if (action_type & (ACTION_PIPE_OUT | ACTION_INSERT))
 571                 msgview->filtered = TRUE;
 572
 573         if (action_type & ACTION_FILTERING_ACTION)
 574                 /* CLAWS: most of the above code is not necessary for applying
 575                  * filtering */
 576                 execute_filtering_actions(action, msg_list);
 577         else
 578                 execute_actions(action, msg_list, text, body_pos, partinfo);
 579 }
 580
 581 static gboolean execute_filtering_actions(gchar *action, GSList *msglist)
 582 {
 583         GSList *action_list, *p;
 584         const gchar *sbegin, *send;
 585         gchar *action_string;
 586
 587         if (NULL == (sbegin = strstr2(action, "%as{")))
 588                 return FALSE;
 589         sbegin += sizeof "%as{" - 1;
 590         if (NULL == (send = strrchr(sbegin, '}')))
 591                 return FALSE;
 592         action_string = g_strndup(sbegin, send - sbegin);
 593
 594         action_list = matcher_parser_get_action_list(action_string);
 595         g_free(action_string);
 596         if (action_list == NULL) return FALSE;
 597
 598         /* apply actions on each message info */
 599         for (p = msglist; p && p->data; p = g_slist_next(p))
 600                 filteringaction_apply_action_list(action_list, (MsgInfo *) p->data);
 601
 602         for (p = action_list; p; p = g_slist_next(p))
 603                 if (p->data) filteringaction_free(p->data);
 604         g_slist_free(action_list);
 605         return TRUE;
 606 }
 607
 608 static gboolean execute_actions(gchar *action, GSList *msg_list,
 609                                 GtkWidget *text,
 610                                 gint body_pos, MimeInfo *partinfo)
 611 {
 612         GSList *children_list = NULL;
 613         gint is_ok  = TRUE;
 614         gint msg_list_len;
 615         Children *children;
 616         ChildInfo *child_info;
 617         ActionType action_type;
 618         MsgInfo *msginfo;
 619         gchar *cmd;
 620         gchar *sel_str = NULL;
 621         gchar *msg_str = NULL;
 622         gchar *user_str = NULL;
 623         gchar *user_hidden_str = NULL;
 624         GtkTextIter start_iter, end_iter;
 625         gboolean is_selection = FALSE;
 626
 627         g_return_val_if_fail(action && *action, FALSE);
 628
 629         action_type = action_get_type(action);
 630
 631         if (action_type == ACTION_ERROR)
 632                 return FALSE;         /* ERR: syntax error */
 633
 634         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE) && !msg_list)
 635                 return FALSE;         /* ERR: file command without selection */
 636
 637         msg_list_len = g_slist_length(msg_list);
 638
 639         if (action_type & (ACTION_PIPE_OUT | ACTION_PIPE_IN | ACTION_INSERT)) {
 640                 if (msg_list_len > 1)
 641                         return FALSE; /* ERR: pipe + multiple selection */
 642                 if (!text)
 643                         return FALSE; /* ERR: pipe and no displayed text */
 644         }
 645
 646         if (action_type & ACTION_SELECTION_STR) {
 647                 if (!text)
 648                         return FALSE; /* ERR: selection string but no text */
 649         }
 650
 651         if (text) {
 652                 GtkTextBuffer *textbuf;
 653
 654                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 655                 is_selection = gtk_text_buffer_get_selection_bounds(textbuf,
 656                                                                     &start_iter,
 657                                                                     &end_iter);
 658                 if (!is_selection) {
 659                         gtk_text_buffer_get_start_iter(textbuf, &start_iter);
 660                         gtk_text_buffer_get_end_iter(textbuf, &end_iter);
 661                 }
 662                 msg_str = gtk_text_buffer_get_text(textbuf,
 663                                                    &start_iter, &end_iter,
 664                                                    FALSE);
 665                 if (is_selection)
 666                         sel_str = g_strdup (msg_str);
 667         }
 668
 669         if (action_type & ACTION_USER_STR) {
 670                 if (!(user_str = get_user_string(action, ACTION_USER_STR))) {
 671                         g_free(msg_str);
 672                         g_free(sel_str);
 673                         return FALSE;
 674                 }
 675         }
 676
 677         if (action_type & ACTION_USER_HIDDEN_STR) {
 678                 if (!(user_hidden_str =
 679                         get_user_string(action, ACTION_USER_HIDDEN_STR))) {
 680                         g_free(msg_str);
 681                         g_free(sel_str);
 682                         g_free(user_str);
 683                         return FALSE;
 684                 }
 685         }
 686
 687         if (text && (action_type & ACTION_PIPE_OUT)) {
 688                 GtkTextBuffer *textbuf;
 689                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 690                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
 691         }
 692
 693         children = g_new0(Children, 1);
 694
 695         children->action      = g_strdup(action);
 696         children->action_type = action_type;
 697         children->msg_text    = text;
 698         children->is_selection = is_selection;
 699
 700         if ((action_type & (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)) &&
 701             ((action_type & ACTION_SINGLE) == 0 || msg_list_len == 1))
 702                 children->open_in = 1;
 703
 704         if (action_type & ACTION_SINGLE) {
 705                 GSList *cur;
 706
 707                 for (cur = msg_list; cur && is_ok == TRUE; cur = cur->next) {
 708                         msginfo = (MsgInfo *)cur->data;
 709                         if (!msginfo) {
 710                                 is_ok  = FALSE; /* ERR: msginfo missing */
 711                                 break;
 712                         }
 713                         cmd = parse_action_cmd(action, msginfo, msg_list,
 714                                                partinfo, user_str,
 715                                                user_hidden_str, sel_str);
 716                         if (!cmd) {
 717                                 debug_print("Action command error\n");
 718                                 is_ok  = FALSE; /* ERR: incorrect command */
 719                                 break;
 720                         }
 721                         if ((child_info = fork_child(cmd, msg_str, children))) {
 722                                 children_list = g_slist_append(children_list,
 723                                                                child_info);
 724                         }
 725                         g_free(cmd);
 726                 }
 727         } else {
 728                 cmd = parse_action_cmd(action, NULL, msg_list, partinfo,
 729                                        user_str, user_hidden_str, sel_str);
 730                 if (cmd) {
 731                         if ((child_info = fork_child(cmd, msg_str, children))) {
 732                                 children_list = g_slist_append(children_list,
 733                                                                child_info);
 734                         }
 735                         g_free(cmd);
 736                 } else
 737                         is_ok  = FALSE;         /* ERR: incorrect command */
 738         }
 739
 740         g_free(msg_str);
 741         g_free(sel_str);
 742         g_free(user_str);
 743         g_free(user_hidden_str);
 744
 745         if (!children_list) {
 746                  /* If not waiting for children, return */
 747                 free_children(children);
 748         } else {
 749                 GSList *cur;
 750
 751                 children->list        = children_list;
 752                 children->nb          = g_slist_length(children_list);
 753                 children->initial_nb  = children->nb;
 754
 755                 for (cur = children_list; cur; cur = cur->next) {
 756                         child_info = (ChildInfo *) cur->data;
 757                         child_info->tag_status =
 758                                 gdk_input_add(child_info->chld_status,
 759                                               GDK_INPUT_READ,
 760                                               catch_status, child_info);
 761                 }
 762
 763                 create_io_dialog(children);
 764         }
 765
 766         return is_ok;
 767 }
 768
 769 static ChildInfo *fork_child(gchar *cmd, const gchar *msg_str,
 770                              Children *children)
 771 {
 772         gint chld_in[2], chld_out[2], chld_err[2], chld_status[2];
 773         gchar *cmdline[4];
 774         pid_t pid, gch_pid;
 775         ChildInfo *child_info;
 776         gint sync;
 777
 778         sync = !(children->action_type & ACTION_ASYNC);
 779
 780         chld_in[0] = chld_in[1] = chld_out[0] = chld_out[1] = chld_err[0]
 781                 = chld_err[1] = chld_status[0] = chld_status[1] = -1;
 782
 783         if (sync) {
 784                 if (pipe(chld_status) || pipe(chld_in) || pipe(chld_out) ||
 785                     pipe(chld_err)) {
 786                         alertpanel_error(_("Command could not be started. "
 787                                            "Pipe creation failed.\n%s"),
 788                                         g_strerror(errno));
 789                         /* Closing fd = -1 fails silently */
 790                         close(chld_in[0]);
 791                         close(chld_in[1]);
 792                         close(chld_out[0]);
 793                         close(chld_out[1]);
 794                         close(chld_err[0]);
 795                         close(chld_err[1]);
 796                         close(chld_status[0]);
 797                         close(chld_status[1]);
 798                         return NULL; /* Pipe error */
 799                 }
 800         }
 801
 802         debug_print("Forking child and grandchild.\n");
 803         debug_print("Executing: /bin/sh -c %s\n", cmd);
 804
 805         pid = fork();
 806         if (pid == 0) { /* Child */
 807                 if (setpgid(0, 0))
 808                         perror("setpgid");
 809
 810 #ifdef GDK_WINDOWING_X11
 811                 close(ConnectionNumber(gdk_display));
 812 #endif /* GDK_WINDOWING_X11 */
 813
 814                 gch_pid = fork();
 815
 816                 if (gch_pid == 0) {
 817                         if (setpgid(0, getppid()))
 818                                 perror("setpgid");
 819
 820                         if (sync) {
 821                                 if (children->action_type &
 822                                     (ACTION_PIPE_IN |
 823                                      ACTION_USER_IN |
 824                                      ACTION_USER_HIDDEN_IN)) {
 825                                         close(fileno(stdin));
 826                                         dup  (chld_in[0]);
 827                                 }
 828                                 close(chld_in[0]);
 829                                 close(chld_in[1]);
 830
 831                                 close(fileno(stdout));
 832                                 dup  (chld_out[1]);
 833                                 close(chld_out[0]);
 834                                 close(chld_out[1]);
 835
 836                                 close(fileno(stderr));
 837                                 dup  (chld_err[1]);
 838                                 close(chld_err[0]);
 839                                 close(chld_err[1]);
 840                         }
 841
 842                         cmdline[0] = "sh";
 843                         cmdline[1] = "-c";
 844                         cmdline[2] = cmd;
 845                         cmdline[3] = NULL;
 846                         execvp("/bin/sh", cmdline);
 847
 848                         perror("execvp");
 849                         _exit(1);
 850                 } else if (gch_pid < (pid_t) 0) { /* Fork error */
 851                         if (sync)
 852                                 write(chld_status[1], "1\n", 2);
 853                         perror("fork");
 854                         _exit(1);
 855                 } else { /* Child */
 856                         if (sync) {
 857                                 close(chld_in[0]);
 858                                 close(chld_in[1]);
 859                                 close(chld_out[0]);
 860                                 close(chld_out[1]);
 861                                 close(chld_err[0]);
 862                                 close(chld_err[1]);
 863                                 close(chld_status[0]);
 864
 865                                 debug_print("Child: Waiting for grandchild\n");
 866                                 waitpid(gch_pid, NULL, 0);
 867                                 debug_print("Child: grandchild ended\n");
 868                                 write(chld_status[1], "0\n", 2);
 869                                 close(chld_status[1]);
 870                         }
 871                         _exit(0);
 872                 }
 873         } else if (pid < 0) { /* Fork error */
 874                 alertpanel_error(_("Could not fork to execute the following "
 875                                    "command:\n%s\n%s"),
 876                                  cmd, g_strerror(errno));
 877                 return NULL;
 878         }
 879
 880         /* Parent */
 881
 882         if (!sync) {
 883                 waitpid(pid, NULL, 0);
 884                 return NULL;
 885         }
 886
 887         close(chld_in[0]);
 888         if (!(children->action_type &
 889               (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 890                 close(chld_in[1]);
 891         close(chld_out[1]);
 892         close(chld_err[1]);
 893         close(chld_status[1]);
 894
 895         child_info = g_new0(ChildInfo, 1);
 896
 897         child_info->children    = children;
 898
 899         child_info->pid         = pid;
 900         child_info->cmd         = g_strdup(cmd);
 901         child_info->new_out     = FALSE;
 902         child_info->output      = g_string_new(NULL);
 903         child_info->chld_in     =
 904                 (children->action_type &
 905                  (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN))
 906                         ? chld_in [1] : -1;
 907         child_info->chld_out    = chld_out[0];
 908         child_info->chld_err    = chld_err[0];
 909         child_info->chld_status = chld_status[0];
 910         child_info->tag_in      = -1;
 911         child_info->tag_out     = gdk_input_add(chld_out[0], GDK_INPUT_READ,
 912                                                 catch_output, child_info);
 913         child_info->tag_err     = gdk_input_add(chld_err[0], GDK_INPUT_READ,
 914                                                 catch_output, child_info);
 915
 916         if (!(children->action_type &
 917               (ACTION_PIPE_IN | ACTION_PIPE_OUT | ACTION_INSERT)))
 918                 return child_info;
 919
 920         if ((children->action_type & ACTION_PIPE_IN) && msg_str) {
 921                 write(chld_in[1], msg_str, strlen(msg_str));
 922                 if (!(children->action_type &
 923                       (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 924                         close(chld_in[1]);
 925                 child_info->chld_in = -1; /* No more input */
 926         }
 927
 928         return child_info;
 929 }
 930
 931 static void kill_children_cb(GtkWidget *widget, gpointer data)
 932 {
 933         GSList *cur;
 934         Children *children = (Children *) data;
 935         ChildInfo *child_info;
 936
 937         for (cur = children->list; cur; cur = cur->next) {
 938                 child_info = (ChildInfo *)(cur->data);
 939                 debug_print("Killing child group id %d\n", child_info->pid);
 940                 if (child_info->pid && kill(-child_info->pid, SIGTERM) < 0)
 941                         perror("kill");
 942         }
 943 }
 944
 945 static gint wait_for_children(Children *children)
 946 {
 947         gboolean new_output;
 948         ChildInfo *child_info;
 949         GSList *cur;
 950         gint nb = children->nb;
 951
 952         children->nb = 0;
 953
 954         cur = children->list;
 955         new_output = FALSE;
 956         while (cur) {
 957                 child_info = (ChildInfo *)cur->data;
 958                 if (child_info->pid)
 959                         children->nb++;
 960                 new_output |= child_info->new_out;
 961                 cur = cur->next;
 962         }
 963
 964         children->output |= new_output;
 965
 966         if (new_output || (children->dialog && (nb != children->nb)))
 967                 update_io_dialog(children);
 968
 969         if (children->nb)
 970                 return FALSE;
 971
 972         if (!children->dialog) {
 973                 free_children(children);
 974         } else if (!children->output) {
 975                 gtk_widget_destroy(children->dialog);
 976         }
 977
 978         return FALSE;
 979 }
 980
 981 static void send_input(GtkWidget *w, gpointer data)
 982 {
 983         Children *children = (Children *) data;
 984         ChildInfo *child_info = (ChildInfo *) children->list->data;
 985
 986         child_info->tag_in = gdk_input_add(child_info->chld_in,
 987                                            GDK_INPUT_WRITE,
 988                                            catch_input, children);
 989         gtk_widget_set_sensitive(children->input_hbox, FALSE);
 990 }
 991
 992 static gint delete_io_dialog_cb(GtkWidget *w, GdkEvent *e, gpointer data)
 993 {
 994         hide_io_dialog_cb(w, data);
 995         return TRUE;
 996 }
 997
 998 static void hide_io_dialog_cb(GtkWidget *w, gpointer data)
 999 {
1000
1001         Children *children = (Children *)data;
1002
1003         if (!children->nb) {
1004                 g_signal_handlers_disconnect_matched
1005                         (G_OBJECT(children->dialog), G_SIGNAL_MATCH_DATA,
1006                          0, 0, NULL, NULL, children);
1007                 gtk_widget_destroy(children->dialog);
1008                 free_children(children);
1009         }
1010 }
1011
1012 static gint io_dialog_key_pressed_cb(GtkWidget *widget, GdkEventKey *event,
1013                                      gpointer data)
1014 {
1015         if (event && event->keyval == GDK_Escape)
1016                 hide_io_dialog_cb(widget, data);
1017         return TRUE;
1018 }
1019
1020 static void childinfo_close_pipes(ChildInfo *child_info)
1021 {
1022         /* stdout and stderr pipes are guaranteed to be removed by
1023          * their handler, but in case where we receive child exit notification
1024          * before grand-child's pipes closing signals, we check them and close
1025          * them if necessary
1026          */
1027         if (child_info->tag_in > 0)
1028                 gdk_input_remove(child_info->tag_in);
1029         if (child_info->tag_out > 0)
1030                 gdk_input_remove(child_info->tag_out);
1031         if (child_info->tag_err > 0)
1032                 gdk_input_remove(child_info->tag_err);
1033
1034         if (child_info->chld_in >= 0)
1035                 close(child_info->chld_in);
1036         if (child_info->chld_out >= 0)
1037                 close(child_info->chld_out);
1038         if (child_info->chld_err >= 0)
1039                 close(child_info->chld_err);
1040
1041         close(child_info->chld_status);
1042 }
1043
1044 static void free_children(Children *children)
1045 {
1046         ChildInfo *child_info;
1047
1048         debug_print("Freeing children data %p\n", children);
1049
1050         g_free(children->action);
1051         while (children->list != NULL) {
1052                 child_info = (ChildInfo *)children->list->data;
1053                 g_free(child_info->cmd);
1054                 g_string_free(child_info->output, TRUE);
1055                 children->list = g_slist_remove(children->list, child_info);
1056                 g_free(child_info);
1057         }
1058         g_free(children);
1059 }
1060
1061 static void update_io_dialog(Children *children)
1062 {
1063         GSList *cur;
1064
1065         debug_print("Updating actions input/output dialog.\n");
1066
1067         if (children->progress_bar) {
1068                 gchar *text;
1069
1070                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(children->progress_bar),
1071                                               (gdouble) (children->initial_nb - children->nb) /
1072                                               (gdouble) children->initial_nb);
1073                 text = g_strdup_printf("%s %d/%d", _("Completed"),
1074                                        children->initial_nb - children->nb,
1075                                        children->initial_nb);
1076                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(children->progress_bar), text);
1077                 g_free(text);
1078         }
1079
1080         if (!children->nb) {
1081                 gtk_widget_set_sensitive(children->abort_btn, FALSE);
1082                 gtk_widget_set_sensitive(children->close_btn, TRUE);
1083                 if (children->input_hbox)
1084                         gtk_widget_set_sensitive(children->input_hbox, FALSE);
1085                 gtk_widget_grab_focus(children->close_btn);
1086                 g_signal_connect(G_OBJECT(children->dialog),
1087                                  "key_press_event",
1088                                  G_CALLBACK(io_dialog_key_pressed_cb),
1089                                  children);
1090         }
1091
1092         if (children->output) {
1093                 GtkWidget *text = children->text;
1094                 gchar *caption;
1095                 ChildInfo *child_info;
1096                 GtkTextBuffer *textbuf;
1097                 GtkTextIter iter, start_iter, end_iter;
1098
1099                 gtk_widget_show(children->scrolledwin);
1100                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
1101                 gtk_text_buffer_get_start_iter(textbuf, &start_iter);
1102                 gtk_text_buffer_get_end_iter(textbuf, &end_iter);
1103                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
1104                 gtk_text_buffer_get_start_iter(textbuf, &start_iter);
1105                 iter = start_iter;
1106                 for (cur = children->list; cur; cur = cur->next) {
1107                         child_info = (ChildInfo *)cur->data;
1108                         if (child_info->pid)
1109                                 caption = g_strdup_printf
1110                                         (_("--- Running: %s\n"),
1111                                          child_info->cmd);
1112                         else
1113                                 caption = g_strdup_printf
1114                                         (_("--- Ended: %s\n"),
1115                                          child_info->cmd);
1116
1117                         gtk_text_buffer_insert(textbuf, &iter,
1118                                                caption, -1);
1119                         gtk_text_buffer_insert(textbuf, &iter,
1120                                                child_info->output->str, -1);
1121                         g_free(caption);
1122                         child_info->new_out = FALSE;
1123                 }
1124         }
1125 }
1126
1127 static void create_io_dialog(Children *children)
1128 {
1129         GtkWidget *dialog;
1130         GtkWidget *vbox;
1131         GtkWidget *entry = NULL;
1132         GtkWidget *input_hbox = NULL;
1133         GtkWidget *send_button;
1134         GtkWidget *label;
1135         GtkWidget *text;
1136         GtkWidget *scrolledwin;
1137         GtkWidget *hbox;
1138         GtkWidget *progress_bar = NULL;
1139         GtkWidget *abort_button;
1140         GtkWidget *close_button;
1141         PangoFontDescription *text_font;
1142
1143         debug_print("Creating action IO dialog\n");
1144
1145         dialog = gtk_dialog_new();
1146         gtk_container_set_border_width
1147                 (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);
1148         gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
1149         gtk_window_set_title(GTK_WINDOW(dialog), _("Action's input/output"));
1150         gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
1151         manage_window_set_transient(GTK_WINDOW(dialog));
1152         g_signal_connect(G_OBJECT(dialog), "delete_event",
1153                          G_CALLBACK(delete_io_dialog_cb), children);
1154         g_signal_connect(G_OBJECT(dialog), "destroy",
1155                          G_CALLBACK(hide_io_dialog_cb),
1156                          children);
1157
1158         vbox = gtk_vbox_new(FALSE, 8);
1159         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);
1160         gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
1161         gtk_widget_show(vbox);
1162
1163         label = gtk_label_new(children->action);
1164         gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
1165         gtk_widget_show(label);
1166
1167         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
1168         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
1169                                        GTK_POLICY_AUTOMATIC,
1170                                        GTK_POLICY_AUTOMATIC);
1171         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin, TRUE, TRUE, 0);
1172         gtk_widget_set_size_request(scrolledwin, 480, 200);
1173         gtk_widget_hide(scrolledwin);
1174
1175         text = gtk_text_view_new();
1176         if (prefs_common.textfont) {
1177                 if (NULL != (text_font = pango_font_description_from_string
1178                                 (prefs_common.textfont))) {
1179                         gtk_widget_modify_font(text, text_font);
1180                         pango_font_description_free(text_font);
1181                 }
1182         }
1183         gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
1184         gtk_container_add(GTK_CONTAINER(scrolledwin), text);
1185         gtk_widget_show(text);
1186
1187         if (children->open_in) {
1188                 input_hbox = gtk_hbox_new(FALSE, 8);
1189                 gtk_widget_show(input_hbox);
1190
1191                 entry = gtk_entry_new();
1192                 gtk_widget_set_size_request(entry, 320, -1);
1193                 g_signal_connect(G_OBJECT(entry), "activate",
1194                                  G_CALLBACK(send_input), children);
1195                 gtk_box_pack_start(GTK_BOX(input_hbox), entry, TRUE, TRUE, 0);
1196                 if (children->action_type & ACTION_USER_HIDDEN_IN)
1197                         gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
1198                 gtk_widget_show(entry);
1199
1200                 send_button = gtk_button_new_with_label(_(" Send "));
1201                 g_signal_connect(G_OBJECT(send_button), "clicked",
1202                                  G_CALLBACK(send_input), children);
1203                 gtk_box_pack_start(GTK_BOX(input_hbox), send_button, FALSE,
1204                                    FALSE, 0);
1205                 gtk_widget_show(send_button);
1206
1207                 gtk_box_pack_start(GTK_BOX(vbox), input_hbox, FALSE, FALSE, 0);
1208                 gtk_widget_grab_focus(entry);
1209         }
1210
1211         if (children->initial_nb > 1) {
1212                 gchar * text;
1213
1214                 progress_bar = gtk_progress_bar_new();
1215                 gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(progress_bar),
1216                                 GTK_PROGRESS_LEFT_TO_RIGHT);
1217                 text = g_strdup_printf("%s 0/%d\n", _("Completed"),
1218                                        children->initial_nb);
1219                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar),
1220                                           text);
1221                 g_free(text);
1222                 gtk_box_pack_start(GTK_BOX(vbox), progress_bar, FALSE, FALSE, 0);
1223                 gtk_widget_show(progress_bar);
1224         }
1225
1226         gtkut_button_set_create(&hbox, &abort_button, _("Abort"),
1227                                 &close_button, _("Close"), NULL, NULL);
1228         g_signal_connect(G_OBJECT(abort_button), "clicked",
1229                          G_CALLBACK(kill_children_cb), children);
1230         g_signal_connect(G_OBJECT(close_button), "clicked",
1231                          G_CALLBACK(hide_io_dialog_cb), children);
1232         gtk_widget_show(hbox);
1233
1234         if (children->nb)
1235                 gtk_widget_set_sensitive(close_button, FALSE);
1236
1237         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), hbox);
1238
1239         children->dialog       = dialog;
1240         children->scrolledwin  = scrolledwin;
1241         children->text         = text;
1242         children->input_hbox   = children->open_in ? input_hbox : NULL;
1243         children->input_entry  = children->open_in ? entry : NULL;
1244         children->progress_bar = progress_bar;
1245         children->abort_btn    = abort_button;
1246         children->close_btn    = close_button;
1247
1248         gtk_widget_show(dialog);
1249 }
1250
1251 static void catch_status(gpointer data, gint source, GdkInputCondition cond)
1252 {
1253         ChildInfo *child_info = (ChildInfo *)data;
1254         gchar buf;
1255         gint c;
1256
1257         gdk_input_remove(child_info->tag_status);
1258
1259         c = read(source, &buf, 1);
1260         debug_print("Child returned %c\n", buf);
1261
1262         waitpid(-child_info->pid, NULL, 0);
1263         childinfo_close_pipes(child_info);
1264         child_info->pid = 0;
1265
1266         wait_for_children(child_info->children);
1267 }
1268
1269 static void catch_input(gpointer data, gint source, GdkInputCondition cond)
1270 {
1271         Children *children = (Children *)data;
1272         ChildInfo *child_info = (ChildInfo *)children->list->data;
1273         gchar *input;
1274         gint c, count, len;
1275
1276         debug_print("Sending input to grand child.\n");
1277         if (!(cond && GDK_INPUT_WRITE))
1278                 return;
1279
1280         gdk_input_remove(child_info->tag_in);
1281         child_info->tag_in = -1;
1282
1283         input = gtk_editable_get_chars(GTK_EDITABLE(children->input_entry),
1284                                        0, -1);
1285         len = strlen(input);
1286         count = 0;
1287
1288         do {
1289                 c = write(child_info->chld_in, input + count, len - count);
1290                 if (c >= 0)
1291                         count += c;
1292         } while (c >= 0 && count < len);
1293
1294         if (c >= 0)
1295                 write(child_info->chld_in, "\n", 2);
1296
1297         g_free(input);
1298
1299         gtk_entry_set_text(GTK_ENTRY(children->input_entry), "");
1300         gtk_widget_set_sensitive(children->input_hbox, TRUE);
1301         close(child_info->chld_in);
1302         child_info->chld_in = -1;
1303         debug_print("Input to grand child sent.\n");
1304 }
1305
1306 static void catch_output(gpointer data, gint source, GdkInputCondition cond)
1307 {
1308         ChildInfo *child_info = (ChildInfo *)data;
1309         gint c, i;
1310         gchar buf[BUFFSIZE];
1311
1312         debug_print("Catching grand child's output.\n");
1313         if (child_info->children->action_type &
1314             (ACTION_PIPE_OUT | ACTION_INSERT)
1315             && source == child_info->chld_out) {
1316                 GtkTextView *text = GTK_TEXT_VIEW(child_info->children->msg_text);
1317                 GtkTextBuffer *textbuf = gtk_text_view_get_buffer(text);
1318                 GtkTextIter iter1, iter2;
1319                 GtkTextMark *mark;
1320
1321                 mark = gtk_text_buffer_get_insert(textbuf);
1322                 gtk_text_buffer_get_iter_at_mark(textbuf, &iter1, mark);
1323                 gtk_text_buffer_get_iter_at_mark(textbuf, &iter2, mark);
1324
1325                 while (TRUE) {
1326                         c = read(source, buf, sizeof(buf) - 1);
1327                         if (c == 0)
1328                                 break;
1329                         else {
1330                                 gssize by_read = 0, by_written = 0;
1331                                 gchar *ret_str = g_locale_to_utf8(buf, c, &by_read,
1332                                                                   &by_written, NULL);
1333
1334                                 if (ret_str && by_written) {
1335                                         gtk_text_buffer_insert(textbuf, &iter2,
1336                                                                ret_str, by_written);
1337                                         g_free(ret_str);
1338                                 } else
1339                                         gtk_text_buffer_insert(textbuf, &iter2, buf, c);
1340                         }
1341                 }
1342                 if (child_info->children->is_selection) {
1343                         gtk_text_buffer_place_cursor(textbuf, &iter1);
1344                         gtk_text_buffer_move_mark_by_name
1345                                 (textbuf, "selection_bound", &iter2);
1346                 }
1347         } else {
1348                 c = read(source, buf, sizeof(buf) - 1);
1349
1350                 if (c > 0) {
1351                         gssize by_read = 0, by_written = 0;
1352                         gchar *ret_str = g_locale_to_utf8(buf, c, &by_read,
1353                                                           &by_written, NULL);
1354
1355                         if (ret_str && by_written) {
1356                                 g_string_append_len(child_info->output,
1357                                                     ret_str, by_written);
1358                                 g_free(ret_str);
1359                         } else
1360                                 g_string_append_len(child_info->output, buf, c);
1361                 }
1362
1363                 if (c > 0)
1364                         child_info->new_out = TRUE;
1365         }
1366         if (c == 0) {
1367                 if (source == child_info->chld_out) {
1368                         gdk_input_remove(child_info->tag_out);
1369                         child_info->tag_out = -1;
1370                         close(child_info->chld_out);
1371                         child_info->chld_out = -1;
1372                 } else {
1373                         gdk_input_remove(child_info->tag_err);
1374                         child_info->tag_err = -1;
1375                         close(child_info->chld_err);
1376                         child_info->chld_err = -1;
1377                 }
1378         }
1379
1380         wait_for_children(child_info->children);
1381 }
1382
1383 static gchar *get_user_string(const gchar *action, ActionType type)
1384 {
1385         gchar *message;
1386         gchar *user_str = NULL;
1387
1388         switch (type) {
1389         case ACTION_USER_HIDDEN_STR:
1390                 message = g_strdup_printf
1391                         (_("Enter the argument for the following action:\n"
1392                            "(`%%h' will be replaced with the argument)\n"
1393                            "  %s"),
1394                          action);
1395                 user_str = input_dialog_with_invisible
1396                         (_("Action's hidden user argument"), message, NULL);
1397                 break;
1398         case ACTION_USER_STR:
1399                 message = g_strdup_printf
1400                         (_("Enter the argument for the following action:\n"
1401                            "(`%%u' will be replaced with the argument)\n"
1402                            "  %s"),
1403                          action);
1404                 user_str = input_dialog
1405                         (_("Action's user argument"), message, NULL);
1406                 break;
1407         default:
1408                 g_warning("Unsupported action type %d", type);
1409         }
1410
1411         return user_str;
1412 }