src/action.c

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