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., 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 <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 #include <sys/wait.h>
  39 #include <signal.h>
  40 #include <unistd.h>
  41
  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, *q;
 339         gchar escape_ch[] = "\\ ";
 340
 341         g_return_val_if_fail(msginfo, FALSE);
 342
 343         filename = procmsg_get_message_file(msginfo);
 344
 345         if (!filename) {
 346                 alertpanel_error(_("Could not get message file %d"),
 347                                  msginfo->msgnum);
 348                 return FALSE;
 349         }
 350
 351         p = filename;
 352         while ((q = strpbrk(p, "$\"`'\\ \t*?[]&|;<>()!#~")) != NULL) {
 353                 escape_ch[1] = *q;
 354                 *q = '\0';
 355                 g_string_append(cmd, p);
 356                 g_string_append(cmd, escape_ch);
 357                 p = q + 1;
 358         }
 359         g_string_append(cmd, p);
 360
 361         g_free(filename);
 362
 363         return TRUE;
 364 }
 365
 366 static gboolean parse_append_msgpart(GString *cmd, MsgInfo *msginfo,
 367                                      MimeInfo *partinfo)
 368 {
 369         gboolean single_part = FALSE;
 370         gchar *filename;
 371         gchar *part_filename;
 372         gint ret;
 373
 374         if (!partinfo) {
 375                 partinfo = procmime_scan_message(msginfo);
 376                 if (!partinfo) {
 377                         alertpanel_error(_("Could not get message part."));
 378                         return FALSE;
 379                 }
 380
 381                 single_part = TRUE;
 382         }
 383
 384         filename = procmsg_get_message_file_path(msginfo);
 385         part_filename = procmime_get_tmp_file_name(partinfo);
 386
 387         ret = procmime_get_part(part_filename, partinfo);
 388
 389         if (single_part)
 390                 procmime_mimeinfo_free_all(partinfo);
 391         g_free(filename);
 392
 393         if (ret < 0) {
 394                 alertpanel_error(_("Can't get part of multipart message"));
 395                 g_free(part_filename);
 396                 return FALSE;
 397         }
 398
 399         g_string_append(cmd, part_filename);
 400
 401         g_free(part_filename);
 402
 403         return TRUE;
 404 }
 405
 406 void actions_execute(gpointer data,
 407                      guint action_nb,
 408                      GtkWidget *widget,
 409                      gint source)
 410 {
 411         if (source == TOOLBAR_MAIN)
 412                 mainwin_actions_execute_cb((MainWindow*)data, action_nb, widget);
 413         else if (source == TOOLBAR_COMPOSE)
 414                 compose_actions_execute_cb((Compose*)data, action_nb, widget);
 415         else if (source == TOOLBAR_MSGVIEW)
 416                 msgview_actions_execute_cb((MessageView*)data, action_nb, widget);
 417 }
 418
 419 void action_update_mainwin_menu(GtkItemFactory *ifactory,
 420                                 gchar *branch_path,
 421                                 MainWindow *mainwin)
 422 {
 423         action_update_menu(ifactory, branch_path,
 424                            mainwin_actions_execute_cb, mainwin);
 425 }
 426
 427 void action_update_msgview_menu(GtkItemFactory *ifactory,
 428                                 gchar *branch_path,
 429                                 MessageView *msgview)
 430 {
 431         action_update_menu(ifactory, branch_path,
 432                            msgview_actions_execute_cb, msgview);
 433 }
 434
 435 void action_update_compose_menu(GtkItemFactory *ifactory,
 436                                 gchar *branch_path,
 437                                 Compose *compose)
 438 {
 439         action_update_menu(ifactory, branch_path,
 440                            compose_actions_execute_cb, compose);
 441 }
 442
 443 static void action_update_menu(GtkItemFactory *ifactory,
 444                                gchar *branch_path,
 445                                gpointer callback, gpointer data)
 446 {
 447         GtkWidget *menuitem;
 448         gchar *menu_path;
 449         GSList *cur;
 450         gchar *action, *action_p;
 451         GList *amenu;
 452         GtkItemFactoryEntry ifentry = {NULL, NULL, NULL, 0, "<Branch>"};
 453
 454         ifentry.path = branch_path;
 455         menuitem = gtk_item_factory_get_widget(ifactory, branch_path);
 456         g_return_if_fail(menuitem != NULL);
 457
 458         amenu = GTK_MENU_SHELL(menuitem)->children;
 459         while (amenu != NULL) {
 460                 GList *alist = amenu->next;
 461                 gtk_widget_destroy(GTK_WIDGET(amenu->data));
 462                 amenu = alist;
 463         }
 464
 465         ifentry.accelerator     = NULL;
 466         ifentry.callback_action = 0;
 467         ifentry.callback        = callback;
 468         ifentry.item_type       = NULL;
 469
 470         for (cur = prefs_common.actions_list; cur; cur = cur->next) {
 471                 action   = g_strdup((gchar *)cur->data);
 472                 action_p = strstr(action, ": ");
 473                 if (action_p && action_p[2] &&
 474                     action_get_type(&action_p[2]) != ACTION_ERROR) {
 475                         action_p[0] = '\0';
 476                         menu_path = g_strdup_printf("%s/%s", branch_path,
 477                                                     action);
 478                         ifentry.path = menu_path;
 479                         gtk_item_factory_create_item(ifactory, &ifentry, data,
 480                                                      1);
 481                         g_free(menu_path);
 482                 }
 483                 g_free(action);
 484                 ifentry.callback_action++;
 485         }
 486 }
 487
 488 static void compose_actions_execute_cb(Compose *compose, guint action_nb,
 489                                        GtkWidget *widget)
 490 {
 491         gchar *buf, *action;
 492         ActionType action_type;
 493
 494         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 495
 496         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 497         g_return_if_fail(buf != NULL);
 498         action = strstr(buf, ": ");
 499         g_return_if_fail(action != NULL);
 500
 501         /* Point to the beginning of the command-line */
 502         action += 2;
 503
 504         action_type = action_get_type(action);
 505         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE)) {
 506                 alertpanel_warning
 507                         (_("The selected action cannot be used in the compose window\n"
 508                            "because it contains %%f, %%F, %%as or %%p."));
 509                 return;
 510         }
 511
 512         execute_actions(action, NULL, compose->text, 0, NULL);
 513 }
 514
 515 static void mainwin_actions_execute_cb(MainWindow *mainwin, guint action_nb,
 516                                        GtkWidget *widget)
 517 {
 518         GSList *msg_list;
 519
 520         msg_list = summary_get_selected_msg_list(mainwin->summaryview);
 521         message_actions_execute(mainwin->messageview, action_nb, msg_list);
 522         g_slist_free(msg_list);
 523 }
 524
 525 static void msgview_actions_execute_cb(MessageView *msgview, guint action_nb,
 526                                        GtkWidget *widget)
 527 {
 528         GSList *msg_list = NULL;
 529
 530         if (msgview->msginfo)
 531                 msg_list = g_slist_append(msg_list, msgview->msginfo);
 532         message_actions_execute(msgview, action_nb, msg_list);
 533         g_slist_free(msg_list);
 534 }
 535
 536 static void message_actions_execute(MessageView *msgview, guint action_nb,
 537                                     GSList *msg_list)
 538 {
 539         TextView *textview;
 540         MimeInfo *partinfo;
 541         gchar *buf;
 542         gchar *action;
 543         GtkWidget *text = NULL;
 544         guint body_pos = 0;
 545         ActionType action_type;
 546
 547         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 548
 549         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 550
 551         g_return_if_fail(buf);
 552         g_return_if_fail((action = strstr(buf, ": ")));
 553
 554         /* Point to the beginning of the command-line */
 555         action += 2;
 556
 557         textview = messageview_get_current_textview(msgview);
 558         if (textview) {
 559                 text     = textview->text;
 560                 body_pos = textview->body_pos;
 561         }
 562         partinfo = messageview_get_selected_mime_part(msgview);
 563
 564         /* this command will alter the message text */
 565         action_type = action_get_type(action);
 566         if (action_type & (ACTION_PIPE_OUT | ACTION_INSERT))
 567                 msgview->filtered = TRUE;
 568
 569         if (action_type & ACTION_FILTERING_ACTION)
 570                 /* CLAWS: most of the above code is not necessary for applying
 571                  * filtering */
 572                 execute_filtering_actions(action, msg_list);
 573         else
 574                 execute_actions(action, msg_list, text, body_pos, partinfo);
 575 }
 576
 577 static gboolean execute_filtering_actions(gchar *action, GSList *msglist)
 578 {
 579         GSList *action_list, *p;
 580         const gchar *sbegin, *send;
 581         gchar *action_string;
 582
 583         if (NULL == (sbegin = strstr2(action, "%as{")))
 584                 return FALSE;
 585         sbegin += sizeof "%as{" - 1;
 586         if (NULL == (send = strrchr(sbegin, '}')))
 587                 return FALSE;
 588         action_string = g_strndup(sbegin, send - sbegin);
 589
 590         action_list = matcher_parser_get_action_list(action_string);
 591         g_free(action_string);
 592         if (action_list == NULL) return FALSE;
 593
 594         /* apply actions on each message info */
 595         for (p = msglist; p && p->data; p = g_slist_next(p))
 596                 filteringaction_apply_action_list(action_list, (MsgInfo *) p->data);
 597
 598         for (p = action_list; p; p = g_slist_next(p))
 599                 if (p->data) filteringaction_free(p->data);
 600         g_slist_free(action_list);
 601         return TRUE;
 602 }
 603
 604 static gboolean execute_actions(gchar *action, GSList *msg_list,
 605                                 GtkWidget *text,
 606                                 gint body_pos, MimeInfo *partinfo)
 607 {
 608         GSList *children_list = NULL;
 609         gint is_ok  = TRUE;
 610         gint msg_list_len;
 611         Children *children;
 612         ChildInfo *child_info;
 613         ActionType action_type;
 614         MsgInfo *msginfo;
 615         gchar *cmd;
 616         gchar *sel_str = NULL;
 617         gchar *msg_str = NULL;
 618         gchar *user_str = NULL;
 619         gchar *user_hidden_str = NULL;
 620         GtkTextIter start_iter, end_iter;
 621         gboolean is_selection = FALSE;
 622
 623         g_return_val_if_fail(action && *action, FALSE);
 624
 625         action_type = action_get_type(action);
 626
 627         if (action_type == ACTION_ERROR)
 628                 return FALSE;         /* ERR: syntax error */
 629
 630         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE) && !msg_list)
 631                 return FALSE;         /* ERR: file command without selection */
 632
 633         msg_list_len = g_slist_length(msg_list);
 634
 635         if (action_type & (ACTION_PIPE_OUT | ACTION_PIPE_IN | ACTION_INSERT)) {
 636                 if (msg_list_len > 1)
 637                         return FALSE; /* ERR: pipe + multiple selection */
 638                 if (!text)
 639                         return FALSE; /* ERR: pipe and no displayed text */
 640         }
 641
 642         if (action_type & ACTION_SELECTION_STR) {
 643                 if (!text)
 644                         return FALSE; /* ERR: selection string but no text */
 645         }
 646
 647         if (text) {
 648                 GtkTextBuffer *textbuf;
 649
 650                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 651                 is_selection = gtk_text_buffer_get_selection_bounds
 652                         (textbuf, &start_iter, &end_iter);
 653                 if (!is_selection) {
 654                         gtk_text_buffer_get_iter_at_offset
 655                                 (textbuf, &start_iter, body_pos);
 656                         gtk_text_buffer_get_end_iter(textbuf, &end_iter);
 657                 }
 658                 msg_str = gtk_text_buffer_get_text
 659                         (textbuf, &start_iter, &end_iter, FALSE);
 660                 if (is_selection)
 661                         sel_str = g_strdup(msg_str);
 662         }
 663
 664         if (action_type & ACTION_USER_STR) {
 665                 if (!(user_str = get_user_string(action, ACTION_USER_STR))) {
 666                         g_free(msg_str);
 667                         g_free(sel_str);
 668                         return FALSE;
 669                 }
 670         }
 671
 672         if (action_type & ACTION_USER_HIDDEN_STR) {
 673                 if (!(user_hidden_str =
 674                         get_user_string(action, ACTION_USER_HIDDEN_STR))) {
 675                         g_free(msg_str);
 676                         g_free(sel_str);
 677                         g_free(user_str);
 678                         return FALSE;
 679                 }
 680         }
 681
 682         if (text && (action_type & ACTION_PIPE_OUT)) {
 683                 GtkTextBuffer *textbuf;
 684                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
 685                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
 686         }
 687
 688         children = g_new0(Children, 1);
 689
 690         children->action      = g_strdup(action);
 691         children->action_type = action_type;
 692         children->msg_text    = text;
 693         children->is_selection = is_selection;
 694
 695         if ((action_type & (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)) &&
 696             ((action_type & ACTION_SINGLE) == 0 || msg_list_len == 1))
 697                 children->open_in = 1;
 698
 699         if (action_type & ACTION_SINGLE) {
 700                 GSList *cur;
 701
 702                 for (cur = msg_list; cur && is_ok == TRUE; cur = cur->next) {
 703                         msginfo = (MsgInfo *)cur->data;
 704                         if (!msginfo) {
 705                                 is_ok  = FALSE; /* ERR: msginfo missing */
 706                                 break;
 707                         }
 708                         cmd = parse_action_cmd(action, msginfo, msg_list,
 709                                                partinfo, user_str,
 710                                                user_hidden_str, sel_str);
 711                         if (!cmd) {
 712                                 debug_print("Action command error\n");
 713                                 is_ok  = FALSE; /* ERR: incorrect command */
 714                                 break;
 715                         }
 716                         if ((child_info = fork_child(cmd, msg_str, children))) {
 717                                 children_list = g_slist_append(children_list,
 718                                                                child_info);
 719                         }
 720                         g_free(cmd);
 721                 }
 722         } else {
 723                 cmd = parse_action_cmd(action, NULL, msg_list, partinfo,
 724                                        user_str, user_hidden_str, sel_str);
 725                 if (cmd) {
 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                 } else
 732                         is_ok  = FALSE;         /* ERR: incorrect command */
 733         }
 734
 735         g_free(msg_str);
 736         g_free(sel_str);
 737         g_free(user_str);
 738         g_free(user_hidden_str);
 739
 740         if (!children_list) {
 741                  /* If not waiting for children, return */
 742                 free_children(children);
 743         } else {
 744                 GSList *cur;
 745
 746                 children->list        = children_list;
 747                 children->nb          = g_slist_length(children_list);
 748                 children->initial_nb  = children->nb;
 749
 750                 for (cur = children_list; cur; cur = cur->next) {
 751                         child_info = (ChildInfo *) cur->data;
 752                         child_info->tag_status =
 753                                 gdk_input_add(child_info->chld_status,
 754                                               GDK_INPUT_READ,
 755                                               catch_status, child_info);
 756                 }
 757
 758                 create_io_dialog(children);
 759         }
 760
 761         return is_ok;
 762 }
 763
 764 static ChildInfo *fork_child(gchar *cmd, const gchar *msg_str,
 765                              Children *children)
 766 {
 767         gint chld_in[2], chld_out[2], chld_err[2], chld_status[2];
 768         gchar *cmdline[4], *ret_str;
 769         pid_t pid, gch_pid;
 770         ChildInfo *child_info;
 771         gint sync;
 772         gssize by_written = 0, by_read = 0;
 773
 774         sync = !(children->action_type & ACTION_ASYNC);
 775
 776         chld_in[0] = chld_in[1] = chld_out[0] = chld_out[1] = chld_err[0]
 777                 = chld_err[1] = chld_status[0] = chld_status[1] = -1;
 778
 779         if (sync) {
 780                 if (pipe(chld_status) || pipe(chld_in) || pipe(chld_out) ||
 781                     pipe(chld_err)) {
 782                         alertpanel_error(_("Command could not be started. "
 783                                            "Pipe creation failed.\n%s"),
 784                                         g_strerror(errno));
 785                         /* Closing fd = -1 fails silently */
 786                         close(chld_in[0]);
 787                         close(chld_in[1]);
 788                         close(chld_out[0]);
 789                         close(chld_out[1]);
 790                         close(chld_err[0]);
 791                         close(chld_err[1]);
 792                         close(chld_status[0]);
 793                         close(chld_status[1]);
 794                         return NULL; /* Pipe error */
 795                 }
 796         }
 797
 798         debug_print("Forking child and grandchild.\n");
 799         debug_print("Executing: /bin/sh -c %s\n", cmd);
 800
 801         pid = fork();
 802         if (pid == 0) { /* Child */
 803                 if (setpgid(0, 0))
 804                         perror("setpgid");
 805
 806 #ifdef GDK_WINDOWING_X11
 807                 close(ConnectionNumber(gdk_display));
 808 #endif /* GDK_WINDOWING_X11 */
 809
 810                 gch_pid = fork();
 811
 812                 if (gch_pid == 0) {
 813                         if (setpgid(0, getppid()))
 814                                 perror("setpgid");
 815
 816                         if (sync) {
 817                                 if (children->action_type &
 818                                     (ACTION_PIPE_IN |
 819                                      ACTION_USER_IN |
 820                                      ACTION_USER_HIDDEN_IN)) {
 821                                         close(fileno(stdin));
 822                                         dup  (chld_in[0]);
 823                                 }
 824                                 close(chld_in[0]);
 825                                 close(chld_in[1]);
 826
 827                                 close(fileno(stdout));
 828                                 dup  (chld_out[1]);
 829                                 close(chld_out[0]);
 830                                 close(chld_out[1]);
 831
 832                                 close(fileno(stderr));
 833                                 dup  (chld_err[1]);
 834                                 close(chld_err[0]);
 835                                 close(chld_err[1]);
 836                         }
 837
 838                         cmdline[0] = "sh";
 839                         cmdline[1] = "-c";
 840                         ret_str = g_locale_from_utf8(cmd, strlen(cmd),
 841                                                      &by_read, &by_written,
 842                                                      NULL);
 843                         if (ret_str && by_written)
 844                                 cmdline[2] = ret_str;
 845                         else
 846                                 cmdline[2] = cmd;
 847                         cmdline[3] = NULL;
 848                         execvp("/bin/sh", cmdline);
 849
 850                         perror("execvp");
 851                         g_free(ret_str);
 852                         _exit(1);
 853                 } else if (gch_pid < (pid_t) 0) { /* Fork error */
 854                         if (sync)
 855                                 write(chld_status[1], "1\n", 2);
 856                         perror("fork");
 857                         _exit(1);
 858                 } else { /* Child */
 859                         if (sync) {
 860                                 close(chld_in[0]);
 861                                 close(chld_in[1]);
 862                                 close(chld_out[0]);
 863                                 close(chld_out[1]);
 864                                 close(chld_err[0]);
 865                                 close(chld_err[1]);
 866                                 close(chld_status[0]);
 867
 868                                 debug_print("Child: Waiting for grandchild\n");
 869                                 waitpid(gch_pid, NULL, 0);
 870                                 debug_print("Child: grandchild ended\n");
 871                                 write(chld_status[1], "0\n", 2);
 872                                 close(chld_status[1]);
 873                         }
 874                         _exit(0);
 875                 }
 876         } else if (pid < 0) { /* Fork error */
 877                 alertpanel_error(_("Could not fork to execute the following "
 878                                    "command:\n%s\n%s"),
 879                                  cmd, g_strerror(errno));
 880                 return NULL;
 881         }
 882
 883         /* Parent */
 884
 885         if (!sync) {
 886                 waitpid(pid, NULL, 0);
 887                 return NULL;
 888         }
 889
 890         close(chld_in[0]);
 891         if (!(children->action_type &
 892               (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 893                 close(chld_in[1]);
 894         close(chld_out[1]);
 895         close(chld_err[1]);
 896         close(chld_status[1]);
 897
 898         child_info = g_new0(ChildInfo, 1);
 899
 900         child_info->children    = children;
 901
 902         child_info->pid         = pid;
 903         child_info->cmd         = g_strdup(cmd);
 904         child_info->new_out     = FALSE;
 905         child_info->output      = g_string_new(NULL);
 906         child_info->chld_in     =
 907                 (children->action_type &
 908                  (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN))
 909                         ? chld_in [1] : -1;
 910         child_info->chld_out    = chld_out[0];
 911         child_info->chld_err    = chld_err[0];
 912         child_info->chld_status = chld_status[0];
 913         child_info->tag_in      = -1;
 914         child_info->tag_out     = gdk_input_add(chld_out[0], GDK_INPUT_READ,
 915                                                 catch_output, child_info);
 916         child_info->tag_err     = gdk_input_add(chld_err[0], GDK_INPUT_READ,
 917                                                 catch_output, child_info);
 918
 919         if (!(children->action_type &
 920               (ACTION_PIPE_IN | ACTION_PIPE_OUT | ACTION_INSERT)))
 921                 return child_info;
 922
 923         if ((children->action_type & ACTION_PIPE_IN) && msg_str) {
 924                 ret_str = g_locale_from_utf8(msg_str, strlen(msg_str),
 925                                              &by_read, &by_written, NULL);
 926                 if (ret_str && by_written) {
 927                         write(chld_in[1], ret_str, strlen(ret_str));
 928                         g_free(ret_str);
 929                 } else
 930                         write(chld_in[1], msg_str, strlen(msg_str));
 931                 if (!(children->action_type &
 932                       (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 933                         close(chld_in[1]);
 934                 child_info->chld_in = -1; /* No more input */
 935         }
 936
 937         return child_info;
 938 }
 939
 940 static void kill_children_cb(GtkWidget *widget, gpointer data)
 941 {
 942         GSList *cur;
 943         Children *children = (Children *) data;
 944         ChildInfo *child_info;
 945
 946         for (cur = children->list; cur; cur = cur->next) {
 947                 child_info = (ChildInfo *)(cur->data);
 948                 debug_print("Killing child group id %d\n", child_info->pid);
 949                 if (child_info->pid && kill(-child_info->pid, SIGTERM) < 0)
 950                         perror("kill");
 951         }
 952 }
 953
 954 static gint wait_for_children(Children *children)
 955 {
 956         gboolean new_output;
 957         ChildInfo *child_info;
 958         GSList *cur;
 959         gint nb = children->nb;
 960
 961         children->nb = 0;
 962
 963         cur = children->list;
 964         new_output = FALSE;
 965         while (cur) {
 966                 child_info = (ChildInfo *)cur->data;
 967                 if (child_info->pid)
 968                         children->nb++;
 969                 new_output |= child_info->new_out;
 970                 cur = cur->next;
 971         }
 972
 973         children->output |= new_output;
 974
 975         if (new_output || (children->dialog && (nb != children->nb)))
 976                 update_io_dialog(children);
 977
 978         if (children->nb)
 979                 return FALSE;
 980
 981         if (!children->dialog) {
 982                 free_children(children);
 983         } else if (!children->output) {
 984                 gtk_widget_destroy(children->dialog);
 985         }
 986
 987         return FALSE;
 988 }
 989
 990 static void send_input(GtkWidget *w, gpointer data)
 991 {
 992         Children *children = (Children *) data;
 993         ChildInfo *child_info = (ChildInfo *) children->list->data;
 994
 995         child_info->tag_in = gdk_input_add(child_info->chld_in,
 996                                            GDK_INPUT_WRITE,
 997                                            catch_input, children);
 998         gtk_widget_set_sensitive(children->input_hbox, FALSE);
 999 }
1000
1001 static gint delete_io_dialog_cb(GtkWidget *w, GdkEvent *e, gpointer data)
1002 {
1003         hide_io_dialog_cb(w, data);
1004         return TRUE;
1005 }
1006
1007 static void hide_io_dialog_cb(GtkWidget *w, gpointer data)
1008 {
1009
1010         Children *children = (Children *)data;
1011
1012         if (!children->nb) {
1013                 g_signal_handlers_disconnect_matched
1014                         (G_OBJECT(children->dialog), G_SIGNAL_MATCH_DATA,
1015                          0, 0, NULL, NULL, children);
1016                 gtk_widget_destroy(children->dialog);
1017                 free_children(children);
1018         }
1019 }
1020
1021 static gint io_dialog_key_pressed_cb(GtkWidget *widget, GdkEventKey *event,
1022                                      gpointer data)
1023 {
1024         if (event && event->keyval == GDK_Escape)
1025                 hide_io_dialog_cb(widget, data);
1026         return TRUE;
1027 }
1028
1029 static void childinfo_close_pipes(ChildInfo *child_info)
1030 {
1031         /* stdout and stderr pipes are guaranteed to be removed by
1032          * their handler, but in case where we receive child exit notification
1033          * before grand-child's pipes closing signals, we check them and close
1034          * them if necessary
1035          */
1036         if (child_info->tag_in > 0)
1037                 gdk_input_remove(child_info->tag_in);
1038         if (child_info->tag_out > 0)
1039                 gdk_input_remove(child_info->tag_out);
1040         if (child_info->tag_err > 0)
1041                 gdk_input_remove(child_info->tag_err);
1042
1043         if (child_info->chld_in >= 0)
1044                 close(child_info->chld_in);
1045         if (child_info->chld_out >= 0)
1046                 close(child_info->chld_out);
1047         if (child_info->chld_err >= 0)
1048                 close(child_info->chld_err);
1049
1050         close(child_info->chld_status);
1051 }
1052
1053 static void free_children(Children *children)
1054 {
1055         ChildInfo *child_info;
1056
1057         debug_print("Freeing children data %p\n", children);
1058
1059         g_free(children->action);
1060         while (children->list != NULL) {
1061                 child_info = (ChildInfo *)children->list->data;
1062                 g_free(child_info->cmd);
1063                 g_string_free(child_info->output, TRUE);
1064                 children->list = g_slist_remove(children->list, child_info);
1065                 g_free(child_info);
1066         }
1067         g_free(children);
1068 }
1069
1070 static void update_io_dialog(Children *children)
1071 {
1072         GSList *cur;
1073
1074         debug_print("Updating actions input/output dialog.\n");
1075
1076         if (children->progress_bar) {
1077                 gchar *text;
1078
1079                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(children->progress_bar),
1080                                               (gdouble) (children->initial_nb - children->nb) /
1081                                               (gdouble) children->initial_nb);
1082                 text = g_strdup_printf("%s %d/%d", _("Completed"),
1083                                        children->initial_nb - children->nb,
1084                                        children->initial_nb);
1085                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(children->progress_bar), text);
1086                 g_free(text);
1087         }
1088
1089         if (!children->nb) {
1090                 gtk_widget_set_sensitive(children->abort_btn, FALSE);
1091                 gtk_widget_set_sensitive(children->close_btn, TRUE);
1092                 if (children->input_hbox)
1093                         gtk_widget_set_sensitive(children->input_hbox, FALSE);
1094                 gtk_widget_grab_focus(children->close_btn);
1095                 g_signal_connect(G_OBJECT(children->dialog),
1096                                  "key_press_event",
1097                                  G_CALLBACK(io_dialog_key_pressed_cb),
1098                                  children);
1099         }
1100
1101         if (children->output) {
1102                 GtkWidget *text = children->text;
1103                 GtkTextBuffer *textbuf;
1104                 GtkTextIter iter, start_iter, end_iter;
1105                 gchar *caption;
1106                 ChildInfo *child_info;
1107
1108                 gtk_widget_show(children->scrolledwin);
1109                 textbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
1110                 gtk_text_buffer_get_bounds(textbuf, &start_iter, &end_iter);
1111                 gtk_text_buffer_delete(textbuf, &start_iter, &end_iter);
1112                 gtk_text_buffer_get_start_iter(textbuf, &iter);
1113
1114                 for (cur = children->list; cur; cur = cur->next) {
1115                         child_info = (ChildInfo *)cur->data;
1116                         if (child_info->pid)
1117                                 caption = g_strdup_printf
1118                                         (_("--- Running: %s\n"),
1119                                          child_info->cmd);
1120                         else
1121                                 caption = g_strdup_printf
1122                                         (_("--- Ended: %s\n"),
1123                                          child_info->cmd);
1124
1125                         gtk_text_buffer_insert(textbuf, &iter, caption, -1);
1126                         gtk_text_buffer_insert(textbuf, &iter,
1127                                                child_info->output->str, -1);
1128                         g_free(caption);
1129                         child_info->new_out = FALSE;
1130                 }
1131         }
1132 }
1133
1134 static void create_io_dialog(Children *children)
1135 {
1136         GtkWidget *dialog;
1137         GtkWidget *vbox;
1138         GtkWidget *entry = NULL;
1139         GtkWidget *input_hbox = NULL;
1140         GtkWidget *send_button;
1141         GtkWidget *label;
1142         GtkWidget *text;
1143         GtkWidget *scrolledwin;
1144         GtkWidget *hbox;
1145         GtkWidget *progress_bar = NULL;
1146         GtkWidget *abort_button;
1147         GtkWidget *close_button;
1148         PangoFontDescription *text_font;
1149
1150         debug_print("Creating action IO dialog\n");
1151
1152         dialog = gtk_dialog_new();
1153         gtk_container_set_border_width
1154                 (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);
1155         gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
1156         gtk_window_set_title(GTK_WINDOW(dialog), _("Action's input/output"));
1157         gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
1158         manage_window_set_transient(GTK_WINDOW(dialog));
1159         g_signal_connect(G_OBJECT(dialog), "delete_event",
1160                          G_CALLBACK(delete_io_dialog_cb), children);
1161         g_signal_connect(G_OBJECT(dialog), "destroy",
1162                          G_CALLBACK(hide_io_dialog_cb),
1163                          children);
1164
1165         vbox = gtk_vbox_new(FALSE, 8);
1166         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);
1167         gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
1168         gtk_widget_show(vbox);
1169
1170         label = gtk_label_new(children->action);
1171         gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
1172         gtk_widget_show(label);
1173
1174         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
1175         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
1176                                        GTK_POLICY_AUTOMATIC,
1177                                        GTK_POLICY_AUTOMATIC);
1178         gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),
1179                                             GTK_SHADOW_IN);
1180         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin, TRUE, TRUE, 0);
1181         gtk_widget_set_size_request(scrolledwin, 560, 200);
1182         gtk_widget_hide(scrolledwin);
1183
1184         text = gtk_text_view_new();
1185
1186         if (prefs_common.textfont) {
1187                 PangoFontDescription *font_desc;
1188                 font_desc = pango_font_description_from_string
1189                         (prefs_common.textfont);
1190                 if (font_desc) {
1191                         gtk_widget_modify_font(text, font_desc);
1192                         pango_font_description_free(font_desc);
1193                 }
1194         }
1195
1196         gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
1197         gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text), GTK_WRAP_WORD);
1198         gtk_text_view_set_left_margin(GTK_TEXT_VIEW(text), 6);
1199         gtk_text_view_set_right_margin(GTK_TEXT_VIEW(text), 6);
1200         gtk_container_add(GTK_CONTAINER(scrolledwin), text);
1201         gtk_widget_show(text);
1202
1203         if (children->open_in) {
1204                 input_hbox = gtk_hbox_new(FALSE, 8);
1205                 gtk_widget_show(input_hbox);
1206
1207                 entry = gtk_entry_new();
1208                 gtk_widget_set_size_request(entry, 320, -1);
1209                 g_signal_connect(G_OBJECT(entry), "activate",
1210                                  G_CALLBACK(send_input), children);
1211                 gtk_box_pack_start(GTK_BOX(input_hbox), entry, TRUE, TRUE, 0);
1212                 if (children->action_type & ACTION_USER_HIDDEN_IN)
1213                         gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
1214                 gtk_widget_show(entry);
1215
1216                 send_button = gtk_button_new_from_stock(GTK_STOCK_EXECUTE);
1217                 g_signal_connect(G_OBJECT(send_button), "clicked",
1218                                  G_CALLBACK(send_input), children);
1219                 gtk_box_pack_start(GTK_BOX(input_hbox), send_button, FALSE,
1220                                    FALSE, 0);
1221                 gtk_widget_show(send_button);
1222
1223                 gtk_box_pack_start(GTK_BOX(vbox), input_hbox, FALSE, FALSE, 0);
1224                 gtk_widget_grab_focus(entry);
1225         }
1226
1227         if (children->initial_nb > 1) {
1228                 gchar * text;
1229
1230                 progress_bar = gtk_progress_bar_new();
1231                 gtk_progress_bar_set_orientation(GTK_PROGRESS_BAR(progress_bar),
1232                                 GTK_PROGRESS_LEFT_TO_RIGHT);
1233                 text = g_strdup_printf("%s 0/%d\n", _("Completed"),
1234                                        children->initial_nb);
1235                 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar),
1236                                           text);
1237                 g_free(text);
1238                 gtk_box_pack_start(GTK_BOX(vbox), progress_bar, FALSE, FALSE, 0);
1239                 gtk_widget_show(progress_bar);
1240         }
1241
1242         gtkut_stock_button_set_create(&hbox, &abort_button, GTK_STOCK_STOP,
1243                                       &close_button, GTK_STOCK_CLOSE, NULL, NULL);
1244         g_signal_connect(G_OBJECT(abort_button), "clicked",
1245                          G_CALLBACK(kill_children_cb), children);
1246         g_signal_connect(G_OBJECT(close_button), "clicked",
1247                          G_CALLBACK(hide_io_dialog_cb), children);
1248         gtk_widget_show(hbox);
1249
1250         if (children->nb)
1251                 gtk_widget_set_sensitive(close_button, FALSE);
1252
1253         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), hbox);
1254
1255         children->dialog       = dialog;
1256         children->scrolledwin  = scrolledwin;
1257         children->text         = text;
1258         children->input_hbox   = children->open_in ? input_hbox : NULL;
1259         children->input_entry  = children->open_in ? entry : NULL;
1260         children->progress_bar = progress_bar;
1261         children->abort_btn    = abort_button;
1262         children->close_btn    = close_button;
1263
1264         gtk_widget_show(dialog);
1265 }
1266
1267 static void catch_status(gpointer data, gint source, GdkInputCondition cond)
1268 {
1269         ChildInfo *child_info = (ChildInfo *)data;
1270         gchar buf;
1271         gint c;
1272
1273         gdk_input_remove(child_info->tag_status);
1274
1275         c = read(source, &buf, 1);
1276         debug_print("Child returned %c\n", buf);
1277
1278         waitpid(-child_info->pid, NULL, 0);
1279         childinfo_close_pipes(child_info);
1280         child_info->pid = 0;
1281
1282         wait_for_children(child_info->children);
1283 }
1284
1285 static void catch_input(gpointer data, gint source, GdkInputCondition cond)
1286 {
1287         Children *children = (Children *)data;
1288         ChildInfo *child_info = (ChildInfo *)children->list->data;
1289         gchar *input, *ret_str;
1290         gint c, count, len;
1291         gssize by_read = 0, by_written = 0;
1292
1293         debug_print("Sending input to grand child.\n");
1294         if (!(cond && GDK_INPUT_WRITE))
1295                 return;
1296
1297         gdk_input_remove(child_info->tag_in);
1298         child_info->tag_in = -1;
1299
1300         input = gtk_editable_get_chars(GTK_EDITABLE(children->input_entry),
1301                                        0, -1);
1302         ret_str = g_locale_from_utf8(input, strlen(input), &by_read,
1303                                      &by_written, NULL);
1304         if (ret_str && by_written) {
1305                 g_free(input);
1306                 input = ret_str;
1307         }
1308
1309         len = strlen(input);
1310         count = 0;
1311
1312         do {
1313                 c = write(child_info->chld_in, input + count, len - count);
1314                 if (c >= 0)
1315                         count += c;
1316         } while (c >= 0 && count < len);
1317
1318         if (c >= 0)
1319                 write(child_info->chld_in, "\n", 2);
1320
1321         g_free(input);
1322
1323         gtk_entry_set_text(GTK_ENTRY(children->input_entry), "");
1324         gtk_widget_set_sensitive(children->input_hbox, TRUE);
1325         close(child_info->chld_in);
1326         child_info->chld_in = -1;
1327         debug_print("Input to grand child sent.\n");
1328 }
1329
1330 static void catch_output(gpointer data, gint source, GdkInputCondition cond)
1331 {
1332         ChildInfo *child_info = (ChildInfo *)data;
1333         gint c;
1334         gchar buf[BUFFSIZE];
1335
1336         debug_print("Catching grand child's output.\n");
1337         if (child_info->children->action_type &
1338             (ACTION_PIPE_OUT | ACTION_INSERT)
1339             && source == child_info->chld_out) {
1340                 GtkTextView *text =
1341                         GTK_TEXT_VIEW(child_info->children->msg_text);
1342                 GtkTextBuffer *textbuf = gtk_text_view_get_buffer(text);
1343                 GtkTextIter iter1, iter2;
1344                 GtkTextMark *mark;
1345
1346                 mark = gtk_text_buffer_get_insert(textbuf);
1347                 gtk_text_buffer_get_iter_at_mark(textbuf, &iter1, mark);
1348                 gtk_text_buffer_get_iter_at_mark(textbuf, &iter2, mark);
1349
1350                 while (TRUE) {
1351                         gsize bytes_read = 0, bytes_written = 0;
1352                         gchar *ret_str;
1353
1354                         c = read(source, buf, sizeof(buf) - 1);
1355                         if (c == 0)
1356                                 break;
1357
1358                         ret_str = g_locale_to_utf8
1359                                 (buf, c, &bytes_read, &bytes_written, NULL);
1360                         if (ret_str && bytes_written > 0) {
1361                                 gtk_text_buffer_insert
1362                                         (textbuf, &iter2, ret_str,
1363                                          bytes_written);
1364                                 g_free(ret_str);
1365                         } else
1366                                 gtk_text_buffer_insert(textbuf, &iter2, buf, c);
1367                 }
1368
1369                 if (child_info->children->is_selection) {
1370                         gtk_text_buffer_place_cursor(textbuf, &iter1);
1371                         gtk_text_buffer_move_mark_by_name
1372                                 (textbuf, "selection_bound", &iter2);
1373                 }
1374         } else {
1375                 c = read(source, buf, sizeof(buf) - 1);
1376
1377                 if (c > 0) {
1378                         gsize bytes_read = 0, bytes_written = 0;
1379                         gchar *ret_str;
1380
1381                         ret_str = g_locale_to_utf8
1382                                 (buf, c, &bytes_read, &bytes_written, NULL);
1383                         if (ret_str && bytes_written > 0) {
1384                                 g_string_append_len
1385                                         (child_info->output, ret_str,
1386                                          bytes_written);
1387                                 g_free(ret_str);
1388                         } else
1389                                 g_string_append_len(child_info->output, buf, c);
1390
1391                         child_info->new_out = TRUE;
1392                 }
1393         }
1394         if (c == 0) {
1395                 if (source == child_info->chld_out) {
1396                         gdk_input_remove(child_info->tag_out);
1397                         child_info->tag_out = -1;
1398                         close(child_info->chld_out);
1399                         child_info->chld_out = -1;
1400                 } else {
1401                         gdk_input_remove(child_info->tag_err);
1402                         child_info->tag_err = -1;
1403                         close(child_info->chld_err);
1404                         child_info->chld_err = -1;
1405                 }
1406         }
1407
1408         wait_for_children(child_info->children);
1409 }
1410
1411 static gchar *get_user_string(const gchar *action, ActionType type)
1412 {
1413         gchar *message;
1414         gchar *user_str = NULL;
1415
1416         switch (type) {
1417         case ACTION_USER_HIDDEN_STR:
1418                 message = g_strdup_printf
1419                         (_("Enter the argument for the following action:\n"
1420                            "(`%%h' will be replaced with the argument)\n"
1421                            "  %s"),
1422                          action);
1423                 user_str = input_dialog_with_invisible
1424                         (_("Action's hidden user argument"), message, NULL);
1425                 break;
1426         case ACTION_USER_STR:
1427                 message = g_strdup_printf
1428                         (_("Enter the argument for the following action:\n"
1429                            "(`%%u' will be replaced with the argument)\n"
1430                            "  %s"),
1431                          action);
1432                 user_str = input_dialog
1433                         (_("Action's user argument"), message, NULL);
1434                 break;
1435         default:
1436                 g_warning("Unsupported action type %d", type);
1437         }
1438
1439         return user_str;
1440 }