src/action.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gtk/gtk.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <gdk/gdkx.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <sys/types.h>
  35 #include <sys/wait.h>
  36 #include <signal.h>
  37 #include <unistd.h>
  38
  39 #include "intl.h"
  40 #include "utils.h"
  41 #include "gtkutils.h"
  42 #include "manage_window.h"
  43 #include "mainwindow.h"
  44 #include "prefs_common.h"
  45 #include "alertpanel.h"
  46 #include "inputdialog.h"
  47 #include "action.h"
  48 #include "compose.h"
  49 #include "procmsg.h"
  50 #include "gtkstext.h"
  51 #include "textview.h"
  52
  53 typedef struct _Children                Children;
  54 typedef struct _ChildInfo               ChildInfo;
  55 typedef struct _UserStringDialog        UserStringDialog;
  56
  57 struct _Children
  58 {
  59         GtkWidget       *dialog;
  60         GtkWidget       *text;
  61         GtkWidget       *input_entry;
  62         GtkWidget       *input_hbox;
  63         GtkWidget       *abort_btn;
  64         GtkWidget       *close_btn;
  65         GtkWidget       *scrolledwin;
  66
  67         gchar           *action;
  68         GSList          *list;
  69         gint             nb;
  70         gint             open_in;
  71         gboolean         output;
  72
  73         GtkWidget       *msg_text;
  74         GdkFont         *msgfont;
  75 };
  76
  77 struct _ChildInfo
  78 {
  79         Children        *children;
  80         gchar           *cmd;
  81         guint            type;
  82         pid_t            pid;
  83         gint             chld_in;
  84         gint             chld_out;
  85         gint             chld_err;
  86         gint             chld_status;
  87         gint             tag_in;
  88         gint             tag_out;
  89         gint             tag_err;
  90         gint             tag_status;
  91         gint             new_out;
  92
  93         GString         *output;
  94 };
  95
  96 static void action_update_menu          (GtkItemFactory *ifactory,
  97                                          gchar          *branch_path,
  98                                          gpointer        callback,
  99                                          gpointer        data);
 100 static void compose_actions_execute_cb  (Compose        *compose,
 101                                          guint           action_nb,
 102                                          GtkWidget      *widget);
 103 static void mainwin_actions_execute_cb  (MainWindow     *mainwin,
 104                                          guint           action_nb,
 105                                          GtkWidget      *widget);
 106 static void msgview_actions_execute_cb  (MessageView    *msgview,
 107                                          guint           action_nb,
 108                                          GtkWidget      *widget);
 109 static void message_actions_execute     (MessageView    *msgview,
 110                                          guint           action_nb,
 111                                          GSList         *msg_list);
 112
 113 static gboolean execute_actions         (gchar          *action,
 114                                          GSList         *msg_list,
 115                                          GtkWidget      *text,
 116                                          GdkFont        *msgfont,
 117                                          gint            body_pos,
 118                                          MimeInfo       *partinfo);
 119
 120 static gchar *parse_action_cmd          (gchar          *action,
 121                                          MsgInfo        *msginfo,
 122                                          GSList         *msg_list,
 123                                          MimeInfo       *partinfo,
 124                                          const gchar    *user_str,
 125                                          const gchar    *user_hidden_str,
 126                                          const gchar    *sel_str);
 127 static gboolean parse_append_filename   (GString        *cmd,
 128                                          MsgInfo        *msginfo);
 129
 130 static gboolean parse_append_msgpart    (GString        *cmd,
 131                                          MsgInfo        *msginfo,
 132                                          MimeInfo       *partinfo);
 133
 134 static ChildInfo *fork_child            (gchar          *cmd,
 135                                          gint            action_type,
 136                                          const gchar    *msg_str,
 137                                          Children       *children);
 138
 139 static gint wait_for_children           (Children       *children);
 140
 141 static void free_children               (Children       *children);
 142
 143 static void childinfo_close_pipes       (ChildInfo      *child_info);
 144
 145 static void create_io_dialog            (Children       *children);
 146 static void update_io_dialog            (Children       *children);
 147
 148 static void hide_io_dialog_cb           (GtkWidget      *widget,
 149                                          gpointer        data);
 150 static gint io_dialog_key_pressed_cb    (GtkWidget      *widget,
 151                                          GdkEventKey    *event,
 152                                          gpointer        data);
 153
 154 static void catch_output                (gpointer                data,
 155                                          gint                    source,
 156                                          GdkInputCondition       cond);
 157 static void catch_input                 (gpointer                data,
 158                                          gint                    source,
 159                                          GdkInputCondition       cond);
 160 static void catch_status                (gpointer                data,
 161                                          gint                    source,
 162                                          GdkInputCondition       cond);
 163
 164 static gchar *get_user_string           (const gchar    *action,
 165                                          ActionType      type);
 166
 167
 168 ActionType action_get_type(const gchar *action_str)
 169 {
 170         const gchar *p;
 171         ActionType action_type = ACTION_NONE;
 172
 173         g_return_val_if_fail(action_str,  ACTION_ERROR);
 174         g_return_val_if_fail(*action_str, ACTION_ERROR);
 175
 176         p = action_str;
 177
 178         if (p[0] == '|') {
 179                 action_type |= ACTION_PIPE_IN;
 180                 p++;
 181         } else if (p[0] == '>') {
 182                 action_type |= ACTION_USER_IN;
 183                 p++;
 184         } else if (p[0] == '*') {
 185                 action_type |= ACTION_USER_HIDDEN_IN;
 186                 p++;
 187         }
 188
 189         if (p[0] == '\0')
 190                 return ACTION_ERROR;
 191
 192         while (*p && action_type != ACTION_ERROR) {
 193                 if (p[0] == '%') {
 194                         switch (p[1]) {
 195                         case 'f':
 196                                 action_type |= ACTION_SINGLE;
 197                                 break;
 198                         case 'F':
 199                                 action_type |= ACTION_MULTIPLE;
 200                                 break;
 201                         case 'p':
 202                                 action_type |= ACTION_SINGLE;
 203                                 break;
 204                         case 's':
 205                                 action_type |= ACTION_SELECTION_STR;
 206                                 break;
 207                         case 'u':
 208                                 action_type |= ACTION_USER_STR;
 209                                 break;
 210                         case 'h':
 211                                 action_type |= ACTION_USER_HIDDEN_STR;
 212                                 break;
 213                         default:
 214                                 action_type = ACTION_ERROR;
 215                                 break;
 216                         }
 217                 } else if (p[0] == '|') {
 218                         if (p[1] == '\0')
 219                                 action_type |= ACTION_PIPE_OUT;
 220                 } else if (p[0] == '>') {
 221                         if (p[1] == '\0')
 222                                 action_type |= ACTION_INSERT;
 223                 } else if (p[0] == '&') {
 224                         if (p[1] == '\0')
 225                                 action_type |= ACTION_ASYNC;
 226                 }
 227                 p++;
 228         }
 229
 230         return action_type;
 231 }
 232
 233 static gchar *parse_action_cmd(gchar *action, MsgInfo *msginfo,
 234                                GSList *msg_list, MimeInfo *partinfo,
 235                                const gchar *user_str,
 236                                const gchar *user_hidden_str,
 237                                const gchar *sel_str)
 238 {
 239         GString *cmd;
 240         gchar *p;
 241         GSList *cur;
 242
 243         p = action;
 244
 245         if (p[0] == '|' || p[0] == '>' || p[0] == '*')
 246                 p++;
 247
 248         cmd = g_string_sized_new(strlen(action));
 249
 250         while (p[0] &&
 251                !((p[0] == '|' || p[0] == '>' || p[0] == '&') && !p[1])) {
 252                 if (p[0] == '%' && p[1]) {
 253                         switch (p[1]) {
 254                         case 'f':
 255                                 if (!parse_append_filename(cmd, msginfo)) {
 256                                         g_string_free(cmd, TRUE);
 257                                         return NULL;
 258                                 }
 259                                 p++;
 260                                 break;
 261                         case 'F':
 262                                 for (cur = msg_list; cur != NULL;
 263                                      cur = cur->next) {
 264                                         MsgInfo *msg = (MsgInfo *)cur->data;
 265
 266                                         if (!parse_append_filename(cmd, msg)) {
 267                                                 g_string_free(cmd, TRUE);
 268                                                 return NULL;
 269                                         }
 270                                         if (cur->next)
 271                                                 g_string_append_c(cmd, ' ');
 272                                 }
 273                                 p++;
 274                                 break;
 275                         case 'p':
 276                                 if (!parse_append_msgpart(cmd, msginfo,
 277                                                           partinfo)) {
 278                                         g_string_free(cmd, TRUE);
 279                                         return NULL;
 280                                 }
 281                                 p++;
 282                                 break;
 283                         case 's':
 284                                 if (sel_str)
 285                                         g_string_append(cmd, sel_str);
 286                                 p++;
 287                                 break;
 288                         case 'u':
 289                                 if (user_str)
 290                                         g_string_append(cmd, user_str);
 291                                 p++;
 292                                 break;
 293                         case 'h':
 294                                 if (user_hidden_str)
 295                                         g_string_append(cmd, user_hidden_str);
 296                                 p++;
 297                                 break;
 298                         default:
 299                                 g_string_append_c(cmd, p[0]);
 300                                 g_string_append_c(cmd, p[1]);
 301                                 p++;
 302                         }
 303                 } else {
 304                         g_string_append_c(cmd, p[0]);
 305                 }
 306                 p++;
 307         }
 308         if (cmd->len == 0) {
 309                 g_string_free(cmd, TRUE);
 310                 return NULL;
 311         }
 312
 313         p = cmd->str;
 314         g_string_free(cmd, FALSE);
 315         return p;
 316 }
 317
 318 static gboolean parse_append_filename(GString *cmd, MsgInfo *msginfo)
 319 {
 320         gchar *filename;
 321
 322         g_return_val_if_fail(msginfo, FALSE);
 323
 324         filename = procmsg_get_message_file(msginfo);
 325
 326         if (filename) {
 327                 g_string_append(cmd, filename);
 328                 g_free(filename);
 329         } else {
 330                 alertpanel_error(_("Could not get message file %d"),
 331                                  msginfo->msgnum);
 332                 return FALSE;
 333         }
 334
 335         return TRUE;
 336 }
 337
 338 static gboolean parse_append_msgpart(GString *cmd, MsgInfo *msginfo,
 339                                      MimeInfo *partinfo)
 340 {
 341         gboolean single_part = FALSE;
 342         gchar *filename;
 343         gchar *part_filename;
 344         gint ret;
 345
 346         if (!partinfo) {
 347                 FILE *fp;
 348 #if USE_GPGME
 349                 if ((fp = procmsg_open_message_decrypted(msginfo, &partinfo))
 350                     == NULL) {
 351                         alertpanel_error(_("Could not get message file."));
 352                         return FALSE;
 353                 }
 354 #else
 355                 if ((fp = procmsg_open_message(msginfo)) == NULL) {
 356                         alertpanel_error(_("Could not get message file."));
 357                         return FALSE;
 358                 }
 359                 partinfo = procmime_scan_mime_header(fp);
 360 #endif
 361                 fclose(fp);
 362                 if (!partinfo) {
 363                         procmime_mimeinfo_free_all(partinfo);
 364                         alertpanel_error(_("Could not get message part."));
 365                         return FALSE;
 366                 }
 367
 368                 single_part = TRUE;
 369         }
 370
 371         filename = procmsg_get_message_file_path(msginfo);
 372         part_filename = procmime_get_tmp_file_name(partinfo);
 373
 374         ret = procmime_get_part(part_filename, filename, partinfo);
 375
 376         if (single_part)
 377                 procmime_mimeinfo_free_all(partinfo);
 378         g_free(filename);
 379
 380         if (ret < 0) {
 381                 alertpanel_error(_("Can't get part of multipart message"));
 382                 g_free(part_filename);
 383                 return FALSE;
 384         }
 385
 386         g_string_append(cmd, part_filename);
 387
 388         g_free(part_filename);
 389
 390         return TRUE;
 391 }
 392
 393 void actions_execute(gpointer data,
 394                      guint action_nb,
 395                      GtkWidget *widget,
 396                      gint source)
 397 {
 398         if (source == TOOLBAR_MAIN)
 399                 mainwin_actions_execute_cb((MainWindow*)data, action_nb, widget);
 400         else if (source == TOOLBAR_COMPOSE)
 401                 compose_actions_execute_cb((Compose*)data, action_nb, widget);
 402         else if (source == TOOLBAR_MSGVIEW)
 403                 msgview_actions_execute_cb((MessageView*)data, action_nb, widget);
 404 }
 405
 406 void action_update_mainwin_menu(GtkItemFactory *ifactory, MainWindow *mainwin)
 407 {
 408         action_update_menu(ifactory, "/Tools/Actions",
 409                            mainwin_actions_execute_cb, mainwin);
 410 }
 411
 412 void action_update_msgview_menu(GtkItemFactory *ifactory, MessageView *msgview)
 413 {
 414         action_update_menu(ifactory, "/Tools/Actions",
 415                            msgview_actions_execute_cb, msgview);
 416 }
 417
 418 void action_update_compose_menu(GtkItemFactory *ifactory, Compose *compose)
 419 {
 420         action_update_menu(ifactory, "/Tools/Actions",
 421                            compose_actions_execute_cb, compose);
 422 }
 423
 424 static void action_update_menu(GtkItemFactory *ifactory, gchar *branch_path,
 425                                gpointer callback, gpointer data)
 426 {
 427         GtkWidget *menuitem;
 428         gchar *menu_path;
 429         GSList *cur;
 430         gchar *action, *action_p;
 431         GList *amenu;
 432         GtkItemFactoryEntry ifentry = {NULL, NULL, NULL, 0, "<Branch>"};
 433
 434         ifentry.path = branch_path;
 435         menuitem = gtk_item_factory_get_widget(ifactory, branch_path);
 436         g_return_if_fail(menuitem != NULL);
 437
 438         amenu = GTK_MENU_SHELL(menuitem)->children;
 439         while (amenu != NULL) {
 440                 GList *alist = amenu->next;
 441                 gtk_widget_destroy(GTK_WIDGET(amenu->data));
 442                 amenu = alist;
 443         }
 444
 445         ifentry.accelerator     = NULL;
 446         ifentry.callback_action = 0;
 447         ifentry.callback        = callback;
 448         ifentry.item_type       = NULL;
 449
 450         for (cur = prefs_common.actions_list; cur; cur = cur->next) {
 451                 action   = g_strdup((gchar *)cur->data);
 452                 action_p = strstr(action, ": ");
 453                 if (action_p && action_p[2] &&
 454                     action_get_type(&action_p[2]) != ACTION_ERROR) {
 455                         action_p[0] = 0x00;
 456                         menu_path = g_strdup_printf("%s/%s", branch_path,
 457                                                     action);
 458                         ifentry.path = menu_path;
 459                         gtk_item_factory_create_item(ifactory, &ifentry, data,
 460                                                      1);
 461                         g_free(menu_path);
 462                 }
 463                 g_free(action);
 464                 ifentry.callback_action++;
 465         }
 466 }
 467
 468 static void compose_actions_execute_cb(Compose *compose, guint action_nb,
 469                                        GtkWidget *widget)
 470 {
 471         gchar *buf, *action;
 472         guint action_type;
 473
 474         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 475
 476         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 477         g_return_if_fail(buf != NULL);
 478         action = strstr(buf, ": ");
 479         g_return_if_fail(action != NULL);
 480
 481         /* Point to the beginning of the command-line */
 482         action += 2;
 483
 484         action_type = action_get_type(action);
 485         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE)) {
 486                 alertpanel_warning
 487                         (_("The selected action cannot be used in the compose window\n"
 488                            "because it contains %%f, %%F or %%p."));
 489                 return;
 490         }
 491
 492         execute_actions(action, NULL, compose->text, NULL, 0, NULL);
 493 }
 494
 495 static void mainwin_actions_execute_cb(MainWindow *mainwin, guint action_nb,
 496                                        GtkWidget *widget)
 497 {
 498         GSList *msg_list;
 499
 500         msg_list = summary_get_selected_msg_list(mainwin->summaryview);
 501         message_actions_execute(mainwin->messageview, action_nb, msg_list);
 502         g_slist_free(msg_list);
 503 }
 504
 505 static void msgview_actions_execute_cb(MessageView *msgview, guint action_nb,
 506                                        GtkWidget *widget)
 507 {
 508         GSList *msg_list = NULL;
 509
 510         if (msgview->msginfo)
 511                 msg_list = g_slist_append(msg_list, msgview->msginfo);
 512         message_actions_execute(msgview, action_nb, msg_list);
 513         g_slist_free(msg_list);
 514 }
 515
 516 static void message_actions_execute(MessageView *msgview, guint action_nb,
 517                                     GSList *msg_list)
 518 {
 519         TextView *textview;
 520         MimeInfo *partinfo;
 521         gchar *buf;
 522         gchar *action;
 523         GtkWidget *text = NULL;
 524         GdkFont *msgfont = NULL;
 525         guint body_pos = 0;
 526
 527         g_return_if_fail(action_nb < g_slist_length(prefs_common.actions_list));
 528
 529         buf = (gchar *)g_slist_nth_data(prefs_common.actions_list, action_nb);
 530
 531         g_return_if_fail(buf);
 532         g_return_if_fail(action = strstr(buf, ": "));
 533
 534         /* Point to the beginning of the command-line */
 535         action += 2;
 536
 537         textview = messageview_get_current_textview(msgview);
 538         if (textview) {
 539                 text     = textview->text;
 540                 msgfont  = textview->msgfont;
 541                 body_pos = textview->body_pos;
 542         }
 543         partinfo = messageview_get_selected_mime_part(msgview);
 544
 545         execute_actions(action, msg_list, text, msgfont, body_pos, partinfo);
 546 }
 547
 548 static gboolean execute_actions(gchar *action, GSList *msg_list,
 549                                 GtkWidget *text, GdkFont *msgfont,
 550                                 gint body_pos, MimeInfo *partinfo)
 551 {
 552         GSList *children_list = NULL;
 553         gint is_ok  = TRUE;
 554         gint msg_list_len;
 555         Children *children;
 556         ChildInfo *child_info;
 557         gint action_type;
 558         MsgInfo *msginfo;
 559         gchar *cmd;
 560         guint start = 0, end = 0;
 561         gchar *sel_str = NULL;
 562         gchar *msg_str = NULL;
 563         gchar *user_str = NULL;
 564         gchar *user_hidden_str = NULL;
 565
 566         g_return_val_if_fail(action && *action, FALSE);
 567
 568         action_type = action_get_type(action);
 569
 570         if (action_type == ACTION_ERROR)
 571                 return FALSE;         /* ERR: syntax error */
 572
 573         if (action_type & (ACTION_SINGLE | ACTION_MULTIPLE) && !msg_list)
 574                 return FALSE;         /* ERR: file command without selection */
 575
 576         msg_list_len = g_slist_length(msg_list);
 577
 578         if (action_type & (ACTION_PIPE_OUT | ACTION_PIPE_IN | ACTION_INSERT)) {
 579                 if (msg_list_len > 1)
 580                         return FALSE; /* ERR: pipe + multiple selection */
 581                 if (!text)
 582                         return FALSE; /* ERR: pipe and no displayed text */
 583         }
 584
 585         if (action_type & ACTION_SELECTION_STR) {
 586                 if (!text)
 587                         return FALSE; /* ERR: selection string but no text */
 588         }
 589
 590         if (text) {
 591                 start = GTK_EDITABLE(text)->selection_start_pos;
 592                 end   = GTK_EDITABLE(text)->selection_end_pos;
 593                 if (start > end) {
 594                         guint tmp;
 595                         tmp = start;
 596                         start = end;
 597                         end = tmp;
 598                 }
 599
 600                 if (start == end) {
 601                         start = body_pos;
 602                         end = gtk_stext_get_length(GTK_STEXT(text));
 603                         msg_str = gtk_editable_get_chars(GTK_EDITABLE(text),
 604                                                          start, end);
 605                 } else {
 606                         sel_str = gtk_editable_get_chars(GTK_EDITABLE(text),
 607                                                          start, end);
 608                         msg_str = g_strdup(sel_str);
 609                 }
 610         } else {
 611                 start = body_pos;
 612                 end = gtk_stext_get_length(GTK_STEXT(text));
 613                 msg_str = gtk_editable_get_chars(GTK_EDITABLE(text),
 614                                                  start, end);
 615         }
 616
 617         if (action_type & ACTION_USER_STR) {
 618                 if (!(user_str = get_user_string(action, ACTION_USER_STR))) {
 619                         g_free(msg_str);
 620                         g_free(sel_str);
 621                         return FALSE;
 622                 }
 623         }
 624
 625         if (action_type & ACTION_USER_HIDDEN_STR) {
 626                 if (!(user_hidden_str =
 627                         get_user_string(action, ACTION_USER_HIDDEN_STR))) {
 628                         g_free(msg_str);
 629                         g_free(sel_str);
 630                         g_free(user_str);
 631                         return FALSE;
 632                 }
 633         }
 634
 635         if (action_type & ACTION_PIPE_OUT) {
 636                 gtk_stext_freeze(GTK_STEXT(text));
 637                 gtk_stext_set_point(GTK_STEXT(text), start);
 638                 gtk_stext_forward_delete(GTK_STEXT(text), end - start);
 639                 gtk_stext_thaw(GTK_STEXT(text));
 640         }
 641
 642         children = g_new0(Children, 1);
 643
 644         children->msg_text = text;
 645         children->msgfont = msgfont;
 646
 647         if ((action_type & (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)) &&
 648             ((action_type & ACTION_SINGLE) == 0 || msg_list_len == 1))
 649                 children->open_in = 1;
 650
 651         if (action_type & ACTION_SINGLE) {
 652                 GSList *cur;
 653
 654                 for (cur = msg_list; cur && is_ok == TRUE; cur = cur->next) {
 655                         msginfo = (MsgInfo *)cur->data;
 656                         if (!msginfo) {
 657                                 is_ok  = FALSE; /* ERR: msginfo missing */
 658                                 break;
 659                         }
 660                         cmd = parse_action_cmd(action, msginfo, msg_list,
 661                                                partinfo, user_str,
 662                                                user_hidden_str, sel_str);
 663                         if (!cmd) {
 664                                 debug_print("Action command error\n");
 665                                 is_ok  = FALSE; /* ERR: incorrect command */
 666                                 break;
 667                         }
 668                         if ((child_info = fork_child(cmd, action_type, msg_str,
 669                                                      children))) {
 670                                 children_list = g_slist_append(children_list,
 671                                                                child_info);
 672                         }
 673                         g_free(cmd);
 674                 }
 675         } else {
 676                 cmd = parse_action_cmd(action, NULL, msg_list, partinfo,
 677                                        user_str, user_hidden_str, sel_str);
 678                 if (cmd) {
 679                         if ((child_info = fork_child(cmd, action_type, msg_str,
 680                                                      children))) {
 681                                 children_list = g_slist_append(children_list,
 682                                                                child_info);
 683                         }
 684                         g_free(cmd);
 685                 } else
 686                         is_ok  = FALSE;         /* ERR: incorrect command */
 687         }
 688
 689         g_free(msg_str);
 690         g_free(sel_str);
 691         g_free(user_str);
 692         g_free(user_hidden_str);
 693
 694         if (!children_list) {
 695                  /* If not waiting for children, return */
 696                 g_free(children);
 697         } else {
 698                 GSList *cur;
 699
 700                 children->action  = g_strdup(action);
 701                 children->dialog  = NULL;
 702                 children->list    = children_list;
 703                 children->nb      = g_slist_length(children_list);
 704
 705                 for (cur = children_list; cur; cur = cur->next) {
 706                         child_info = (ChildInfo *) cur->data;
 707                         child_info->tag_status =
 708                                 gdk_input_add(child_info->chld_status,
 709                                               GDK_INPUT_READ,
 710                                               catch_status, child_info);
 711                 }
 712
 713                 create_io_dialog(children);
 714         }
 715
 716         return is_ok;
 717 }
 718
 719 static ChildInfo *fork_child(gchar *cmd, gint action_type,
 720                              const gchar *msg_str, Children *children)
 721 {
 722         gint chld_in[2], chld_out[2], chld_err[2], chld_status[2];
 723         gchar *cmdline[4];
 724         pid_t pid, gch_pid;
 725         ChildInfo *child_info;
 726         gint sync;
 727
 728         sync = !(action_type & ACTION_ASYNC);
 729
 730         chld_in[0] = chld_in[1] = chld_out[0] = chld_out[1] = chld_err[0]
 731                 = chld_err[1] = chld_status[0] = chld_status[1] = -1;
 732
 733         if (sync) {
 734                 if (pipe(chld_status) || pipe(chld_in) || pipe(chld_out) ||
 735                     pipe(chld_err)) {
 736                         alertpanel_error(_("Command could not be started. "
 737                                            "Pipe creation failed.\n%s"),
 738                                         g_strerror(errno));
 739                         /* Closing fd = -1 fails silently */
 740                         close(chld_in[0]);
 741                         close(chld_in[1]);
 742                         close(chld_out[0]);
 743                         close(chld_out[1]);
 744                         close(chld_err[0]);
 745                         close(chld_err[1]);
 746                         close(chld_status[0]);
 747                         close(chld_status[1]);
 748                         return NULL; /* Pipe error */
 749                 }
 750         }
 751
 752         debug_print("Forking child and grandchild.\n");
 753
 754         pid = fork();
 755         if (pid == 0) { /* Child */
 756                 if (setpgid(0, 0))
 757                         perror("setpgid");
 758
 759                 close(ConnectionNumber(gdk_display));
 760
 761                 gch_pid = fork();
 762
 763                 if (gch_pid == 0) {
 764                         if (setpgid(0, getppid()))
 765                                 perror("setpgid");
 766
 767                         if (sync) {
 768                                 if (action_type &
 769                                     (ACTION_PIPE_IN |
 770                                      ACTION_USER_IN |
 771                                      ACTION_USER_HIDDEN_IN)) {
 772                                         close(fileno(stdin));
 773                                         dup  (chld_in[0]);
 774                                 }
 775                                 close(chld_in[0]);
 776                                 close(chld_in[1]);
 777
 778                                 close(fileno(stdout));
 779                                 dup  (chld_out[1]);
 780                                 close(chld_out[0]);
 781                                 close(chld_out[1]);
 782
 783                                 close(fileno(stderr));
 784                                 dup  (chld_err[1]);
 785                                 close(chld_err[0]);
 786                                 close(chld_err[1]);
 787                         }
 788
 789                         cmdline[0] = "sh";
 790                         cmdline[1] = "-c";
 791                         cmdline[2] = cmd;
 792                         cmdline[3] = 0;
 793                         execvp("/bin/sh", cmdline);
 794
 795                         perror("execvp");
 796                         _exit(1);
 797                 } else if (gch_pid < (pid_t) 0) { /* Fork error */
 798                         if (sync)
 799                                 write(chld_status[1], "1\n", 2);
 800                         perror("fork");
 801                         _exit(1);
 802                 } else { /* Child */
 803                         if (sync) {
 804                                 close(chld_in[0]);
 805                                 close(chld_in[1]);
 806                                 close(chld_out[0]);
 807                                 close(chld_out[1]);
 808                                 close(chld_err[0]);
 809                                 close(chld_err[1]);
 810                                 close(chld_status[0]);
 811
 812                                 debug_print("Child: Waiting for grandchild\n");
 813                                 waitpid(gch_pid, NULL, 0);
 814                                 debug_print("Child: grandchild ended\n");
 815                                 write(chld_status[1], "0\n", 2);
 816                                 close(chld_status[1]);
 817                         }
 818                         _exit(0);
 819                 }
 820         } else if (pid < 0) { /* Fork error */
 821                 alertpanel_error(_("Could not fork to execute the following "
 822                                    "command:\n%s\n%s"),
 823                                  cmd, g_strerror(errno));
 824                 return NULL;
 825         }
 826
 827         /* Parent */
 828
 829         if (!sync) {
 830                 waitpid(pid, NULL, 0);
 831                 return NULL;
 832         }
 833
 834         close(chld_in[0]);
 835         if (!(action_type &
 836               (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 837                 close(chld_in[1]);
 838         close(chld_out[1]);
 839         close(chld_err[1]);
 840         close(chld_status[1]);
 841
 842         child_info = g_new0(ChildInfo, 1);
 843
 844         child_info->children    = children;
 845
 846         child_info->pid         = pid;
 847         child_info->cmd         = g_strdup(cmd);
 848         child_info->type        = action_type;
 849         child_info->new_out     = FALSE;
 850         child_info->output      = g_string_new(NULL);
 851         child_info->chld_in     =
 852                 (action_type &
 853                  (ACTION_PIPE_IN | ACTION_USER_IN | ACTION_USER_HIDDEN_IN))
 854                         ? chld_in [1] : -1;
 855         child_info->chld_out    = chld_out[0];
 856         child_info->chld_err    = chld_err[0];
 857         child_info->chld_status = chld_status[0];
 858         child_info->tag_in      = -1;
 859         child_info->tag_out     = gdk_input_add(chld_out[0], GDK_INPUT_READ,
 860                                                 catch_output, child_info);
 861         child_info->tag_err     = gdk_input_add(chld_err[0], GDK_INPUT_READ,
 862                                                 catch_output, child_info);
 863
 864         if (!(action_type & (ACTION_PIPE_IN | ACTION_PIPE_OUT | ACTION_INSERT)))
 865                 return child_info;
 866
 867         if ((action_type & ACTION_PIPE_IN) && msg_str) {
 868                 write(chld_in[1], msg_str, strlen(msg_str));
 869                 if (!(action_type & (ACTION_USER_IN | ACTION_USER_HIDDEN_IN)))
 870                         close(chld_in[1]);
 871                 child_info->chld_in = -1; /* No more input */
 872         }
 873
 874         return child_info;
 875 }
 876
 877 static void kill_children_cb(GtkWidget *widget, gpointer data)
 878 {
 879         GSList *cur;
 880         Children *children = (Children *) data;
 881         ChildInfo *child_info;
 882
 883         for (cur = children->list; cur; cur = cur->next) {
 884                 child_info = (ChildInfo *)(cur->data);
 885                 debug_print("Killing child group id %d\n", child_info->pid);
 886                 if (child_info->pid && kill(-child_info->pid, SIGTERM) < 0)
 887                         perror("kill");
 888         }
 889 }
 890
 891 static gint wait_for_children(Children *children)
 892 {
 893         gboolean new_output;
 894         ChildInfo *child_info;
 895         GSList *cur;
 896         gint nb = children->nb;
 897
 898         children->nb = 0;
 899
 900         cur = children->list;
 901         new_output = FALSE;
 902         while (cur) {
 903                 child_info = (ChildInfo *)cur->data;
 904                 if (child_info->pid)
 905                         children->nb++;
 906                 new_output |= child_info->new_out;
 907                 cur = cur->next;
 908         }
 909
 910         children->output |= new_output;
 911
 912         if (new_output || (children->dialog && (nb != children->nb)))
 913                 update_io_dialog(children);
 914
 915         if (children->nb)
 916                 return FALSE;
 917
 918         if (!children->dialog) {
 919                 free_children(children);
 920         } else if (!children->output) {
 921                 gtk_widget_destroy(children->dialog);
 922         }
 923
 924         return FALSE;
 925 }
 926
 927 static void send_input(GtkWidget *w, gpointer data)
 928 {
 929         Children *children = (Children *) data;
 930         ChildInfo *child_info = (ChildInfo *) children->list->data;
 931
 932         child_info->tag_in = gdk_input_add(child_info->chld_in,
 933                                            GDK_INPUT_WRITE,
 934                                            catch_input, children);
 935         gtk_widget_set_sensitive(children->input_hbox, FALSE);
 936 }
 937
 938 static gint delete_io_dialog_cb(GtkWidget *w, GdkEvent *e, gpointer data)
 939 {
 940         hide_io_dialog_cb(w, data);
 941         return TRUE;
 942 }
 943
 944 static void hide_io_dialog_cb(GtkWidget *w, gpointer data)
 945 {
 946
 947         Children *children = (Children *)data;
 948
 949         if (!children->nb) {
 950                 gtk_signal_disconnect_by_data(GTK_OBJECT(children->dialog),
 951                                               children);
 952                 gtk_widget_destroy(children->dialog);
 953                 free_children(children);
 954         }
 955 }
 956
 957 static gint io_dialog_key_pressed_cb(GtkWidget *widget, GdkEventKey *event,
 958                                      gpointer data)
 959 {
 960         if (event && event->keyval == GDK_Escape)
 961                 hide_io_dialog_cb(widget, data);
 962         return TRUE;
 963 }
 964
 965 static void childinfo_close_pipes(ChildInfo *child_info)
 966 {
 967         if (child_info->tag_in > 0)
 968                 gdk_input_remove(child_info->tag_in);
 969         gdk_input_remove(child_info->tag_out);
 970         gdk_input_remove(child_info->tag_err);
 971
 972         if (child_info->chld_in >= 0)
 973                 close(child_info->chld_in);
 974         close(child_info->chld_out);
 975         close(child_info->chld_err);
 976         close(child_info->chld_status);
 977 }
 978
 979 static void free_children(Children *children)
 980 {
 981         GSList *cur;
 982         ChildInfo *child_info;
 983
 984         debug_print("Freeing children data %p\n", children);
 985
 986         g_free(children->action);
 987         for (cur = children->list; cur;) {
 988                 child_info = (ChildInfo *)cur->data;
 989                 g_free(child_info->cmd);
 990                 g_string_free(child_info->output, TRUE);
 991                 children->list = g_slist_remove(children->list, child_info);
 992                 g_free(child_info);
 993                 cur = children->list;
 994         }
 995         g_free(children);
 996 }
 997
 998 static void update_io_dialog(Children *children)
 999 {
1000         GSList *cur;
1001
1002         debug_print("Updating actions input/output dialog.\n");
1003
1004         if (!children->nb) {
1005                 gtk_widget_set_sensitive(children->abort_btn, FALSE);
1006                 gtk_widget_set_sensitive(children->close_btn, TRUE);
1007                 if (children->input_hbox)
1008                         gtk_widget_set_sensitive(children->input_hbox, FALSE);
1009                 gtk_widget_grab_focus(children->close_btn);
1010                 gtk_signal_connect(GTK_OBJECT(children->dialog),
1011                                    "key_press_event",
1012                                    GTK_SIGNAL_FUNC(io_dialog_key_pressed_cb),
1013                                    children);
1014         }
1015
1016         if (children->output) {
1017                 GtkWidget *text = children->text;
1018                 gchar *caption;
1019                 ChildInfo *child_info;
1020
1021                 gtk_widget_show(children->scrolledwin);
1022                 gtk_text_freeze(GTK_TEXT(text));
1023                 gtk_text_set_point(GTK_TEXT(text), 0);
1024                 gtk_text_forward_delete(GTK_TEXT(text),
1025                                         gtk_text_get_length(GTK_TEXT(text)));
1026                 for (cur = children->list; cur; cur = cur->next) {
1027                         child_info = (ChildInfo *)cur->data;
1028                         if (child_info->pid)
1029                                 caption = g_strdup_printf
1030                                         (_("--- Running: %s\n"),
1031                                          child_info->cmd);
1032                         else
1033                                 caption = g_strdup_printf
1034                                         (_("--- Ended: %s\n"),
1035                                          child_info->cmd);
1036
1037                         gtk_text_insert(GTK_TEXT(text), NULL, NULL, NULL,
1038                                         caption, -1);
1039                         gtk_text_insert(GTK_TEXT(text), NULL, NULL, NULL,
1040                                         child_info->output->str, -1);
1041                         g_free(caption);
1042                         child_info->new_out = FALSE;
1043                 }
1044                 gtk_text_thaw(GTK_TEXT(text));
1045         }
1046 }
1047
1048 static void create_io_dialog(Children *children)
1049 {
1050         GtkWidget *dialog;
1051         GtkWidget *vbox;
1052         GtkWidget *entry = NULL;
1053         GtkWidget *input_hbox = NULL;
1054         GtkWidget *send_button;
1055         GtkWidget *label;
1056         GtkWidget *text;
1057         GtkWidget *scrolledwin;
1058         GtkWidget *hbox;
1059         GtkWidget *abort_button;
1060         GtkWidget *close_button;
1061
1062         debug_print("Creating action IO dialog\n");
1063
1064         dialog = gtk_dialog_new();
1065         gtk_container_set_border_width
1066                 (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);
1067         gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
1068         gtk_window_set_title(GTK_WINDOW(dialog), _("Action's input/output"));
1069         gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
1070         manage_window_set_transient(GTK_WINDOW(dialog));
1071         gtk_signal_connect(GTK_OBJECT(dialog), "delete_event",
1072                         GTK_SIGNAL_FUNC(delete_io_dialog_cb), children);
1073         gtk_signal_connect(GTK_OBJECT(dialog), "destroy",
1074                         GTK_SIGNAL_FUNC(hide_io_dialog_cb),
1075                         children);
1076
1077         vbox = gtk_vbox_new(FALSE, 8);
1078         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);
1079         gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
1080         gtk_widget_show(vbox);
1081
1082         label = gtk_label_new(children->action);
1083         gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
1084         gtk_widget_show(label);
1085
1086         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
1087         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
1088                                        GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
1089         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin, TRUE, TRUE, 0);
1090         gtk_widget_set_usize(scrolledwin, 480, 200);
1091         gtk_widget_hide(scrolledwin);
1092
1093         text = gtk_text_new(gtk_scrolled_window_get_hadjustment
1094                             (GTK_SCROLLED_WINDOW(scrolledwin)),
1095                             gtk_scrolled_window_get_vadjustment
1096                             (GTK_SCROLLED_WINDOW(scrolledwin)));
1097         gtk_text_set_editable(GTK_TEXT(text), FALSE);
1098         gtk_container_add(GTK_CONTAINER(scrolledwin), text);
1099         gtk_widget_show(text);
1100
1101         if (children->open_in) {
1102                 input_hbox = gtk_hbox_new(FALSE, 8);
1103                 gtk_widget_show(input_hbox);
1104
1105                 entry = gtk_entry_new();
1106                 gtk_widget_set_usize(entry, 320, -1);
1107                 gtk_signal_connect(GTK_OBJECT(entry), "activate",
1108                                    GTK_SIGNAL_FUNC(send_input), children);
1109                 gtk_box_pack_start(GTK_BOX(input_hbox), entry, TRUE, TRUE, 0);
1110                 if (children->open_in & ACTION_USER_HIDDEN_IN)
1111                         gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
1112                 gtk_widget_show(entry);
1113
1114                 send_button = gtk_button_new_with_label(_(" Send "));
1115                 gtk_signal_connect(GTK_OBJECT(send_button), "clicked",
1116                                    GTK_SIGNAL_FUNC(send_input), children);
1117                 gtk_box_pack_start(GTK_BOX(input_hbox), send_button, FALSE,
1118                                    FALSE, 0);
1119                 gtk_widget_show(send_button);
1120
1121                 gtk_box_pack_start(GTK_BOX(vbox), input_hbox, FALSE, FALSE, 0);
1122                 gtk_widget_grab_focus(entry);
1123         }
1124
1125         gtkut_button_set_create(&hbox, &abort_button, _("Abort"),
1126                                 &close_button, _("Close"), NULL, NULL);
1127         gtk_signal_connect(GTK_OBJECT(abort_button), "clicked",
1128                         GTK_SIGNAL_FUNC(kill_children_cb), children);
1129         gtk_signal_connect(GTK_OBJECT(close_button), "clicked",
1130                         GTK_SIGNAL_FUNC(hide_io_dialog_cb), children);
1131         gtk_widget_show(hbox);
1132
1133         if (children->nb)
1134                 gtk_widget_set_sensitive(close_button, FALSE);
1135
1136         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), hbox);
1137
1138         children->dialog      = dialog;
1139         children->scrolledwin = scrolledwin;
1140         children->text        = text;
1141         children->input_hbox  = children->open_in ? input_hbox : NULL;
1142         children->input_entry = children->open_in ? entry : NULL;
1143         children->abort_btn   = abort_button;
1144         children->close_btn   = close_button;
1145
1146         gtk_widget_show(dialog);
1147 }
1148
1149 static void catch_status(gpointer data, gint source, GdkInputCondition cond)
1150 {
1151         ChildInfo *child_info = (ChildInfo *)data;
1152         gchar buf;
1153         gint c;
1154
1155         gdk_input_remove(child_info->tag_status);
1156
1157         c = read(source, &buf, 1);
1158         debug_print("Child returned %c\n", buf);
1159
1160         waitpid(-child_info->pid, NULL, 0);
1161         childinfo_close_pipes(child_info);
1162         child_info->pid = 0;
1163
1164         wait_for_children(child_info->children);
1165 }
1166
1167 static void catch_input(gpointer data, gint source, GdkInputCondition cond)
1168 {
1169         Children *children = (Children *)data;
1170         ChildInfo *child_info = (ChildInfo *)children->list->data;
1171         gchar *input;
1172         gint c, count, len;
1173
1174         debug_print("Sending input to grand child.\n");
1175         if (!(cond && GDK_INPUT_WRITE))
1176                 return;
1177
1178         gdk_input_remove(child_info->tag_in);
1179         child_info->tag_in = -1;
1180
1181         input = gtk_editable_get_chars(GTK_EDITABLE(children->input_entry),
1182                                        0, -1);
1183         len = strlen(input);
1184         count = 0;
1185
1186         do {
1187                 c = write(child_info->chld_in, input + count, len - count);
1188                 if (c >= 0)
1189                         count += c;
1190         } while (c >= 0 && count < len);
1191
1192         if (c >= 0)
1193                 write(child_info->chld_in, "\n", 2);
1194
1195         g_free(input);
1196
1197         gtk_entry_set_text(GTK_ENTRY(children->input_entry), "");
1198         gtk_widget_set_sensitive(children->input_hbox, TRUE);
1199         close(child_info->chld_in);
1200         child_info->chld_in = -1;
1201         debug_print("Input to grand child sent.\n");
1202 }
1203
1204 static void catch_output(gpointer data, gint source, GdkInputCondition cond)
1205 {
1206         ChildInfo *child_info = (ChildInfo *)data;
1207         gint c, i;
1208         gchar buf[BUFFSIZE];
1209
1210         debug_print("Catching grand child's output.\n");
1211         if (child_info->type & (ACTION_PIPE_OUT | ACTION_INSERT)
1212             && source == child_info->chld_out) {
1213                 gboolean is_selection = FALSE;
1214                 GtkWidget *text = child_info->children->msg_text;
1215
1216                 if (GTK_EDITABLE(text)->has_selection)
1217                         is_selection = TRUE;
1218                 gtk_stext_freeze(GTK_STEXT(text));
1219                 while (TRUE) {
1220                         c = read(source, buf, sizeof(buf) - 1);
1221                         if (c == 0)
1222                                 break;
1223                         gtk_stext_insert(GTK_STEXT(text),
1224                                          child_info->children->msgfont,
1225                                          NULL, NULL, buf, c);
1226                 }
1227                 if (is_selection) {
1228                         /* Using the select_region draws things. Should not.
1229                          * so we just change selection position and
1230                          * defere drawing when thawing. Hack?
1231                          */
1232                         GTK_EDITABLE(text)->selection_end_pos =
1233                                         gtk_stext_get_point(GTK_STEXT(text));
1234                 }
1235                 gtk_stext_thaw(GTK_STEXT(text));
1236         } else {
1237                 c = read(source, buf, sizeof(buf) - 1);
1238                 for (i = 0; i < c; i++)
1239                         g_string_append_c(child_info->output, buf[i]);
1240                 if (c > 0)
1241                         child_info->new_out = TRUE;
1242         }
1243         wait_for_children(child_info->children);
1244 }
1245
1246 static gchar *get_user_string(const gchar *action, ActionType type)
1247 {
1248         gchar *message;
1249         gchar *user_str = NULL;
1250
1251         switch (type) {
1252         case ACTION_USER_HIDDEN_STR:
1253                 message = g_strdup_printf
1254                         (_("Enter the argument for the following action:\n"
1255                            "(`%%h' will be replaced with the argument)\n"
1256                            "  %s"),
1257                          action);
1258                 user_str = input_dialog_with_invisible
1259                         (_("Action's hidden user argument"), message, NULL);
1260                 break;
1261         case ACTION_USER_STR:
1262                 message = g_strdup_printf
1263                         (_("Enter the argument for the following action:\n"
1264                            "(`%%u' will be replaced with the argument)\n"
1265                            "  %s"),
1266                          action);
1267                 user_str = input_dialog
1268                         (_("Action's user argument"), message, NULL);
1269                 break;
1270         default:
1271                 g_warning("Unsupported action type %d", type);
1272         }
1273
1274         return user_str;
1275 }