src/usermenu.c

   1 /*
   2    User Menu implementation
   3
   4    Copyright (C) 1994-2020
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2013
   9    Andrew Borodin <aborodin@vmail.ru>, 2013
  10
  11    This file is part of the Midnight Commander.
  12
  13    The Midnight Commander is free software: you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation, either version 3 of the License,
  16    or (at your option) any later version.
  17
  18    The Midnight Commander is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27 /** \file usermenu.c
  28  *  \brief Source: user menu implementation
  29  */
  30
  31 #include <config.h>
  32
  33 #include <ctype.h>
  34 #include <errno.h>
  35 #include <stdlib.h>
  36 #include <stdio.h>
  37 #include <string.h>
  38
  39 #include "lib/global.h"
  40 #include "lib/fileloc.h"
  41 #include "lib/tty/tty.h"
  42 #include "lib/skin.h"
  43 #include "lib/search.h"
  44 #include "lib/vfs/vfs.h"
  45 #include "lib/strutil.h"
  46 #include "lib/util.h"
  47 #include "lib/widget.h"
  48
  49 #include "src/editor/edit.h"    /* WEdit, BLOCK_FILE */
  50 #include "src/viewer/mcviewer.h"        /* for default_* externs */
  51
  52 #include "src/execute.h"
  53 #include "src/setup.h"
  54 #include "src/history.h"
  55
  56 #include "src/filemanager/dir.h"
  57 #include "src/filemanager/filemanager.h"
  58 #include "src/filemanager/layout.h"
  59
  60 #include "usermenu.h"
  61
  62 /*** global variables ****************************************************************************/
  63
  64 /*** file scope macro definitions ****************************************************************/
  65
  66 #define MAX_ENTRIES 16
  67 #define MAX_ENTRY_LEN 60
  68
  69 /*** file scope type declarations ****************************************************************/
  70
  71 /*** file scope variables ************************************************************************/
  72
  73 static gboolean debug_flag = FALSE;
  74 static gboolean debug_error = FALSE;
  75 static char *menu = NULL;
  76
  77 /*** file scope functions ************************************************************************/
  78 /* --------------------------------------------------------------------------------------------- */
  79
  80 /** strip file's extension */
  81 static char *
  82 strip_ext (char *ss)
  83 {
  84     char *s = ss;
  85     char *e = NULL;
  86
  87     while (*s != '\0')
  88     {
  89         if (*s == '.')
  90             e = s;
  91         if (IS_PATH_SEP (*s) && e != NULL)
  92             e = NULL;           /* '.' in *directory* name */
  93         s++;
  94     }
  95     if (e != NULL)
  96         *e = '\0';
  97     return ss;
  98 }
  99
 100 /* --------------------------------------------------------------------------------------------- */
 101 /**
 102  * Check for the "shell_patterns" directive.  If it's found and valid,
 103  * interpret it and move the pointer past the directive.  Return the
 104  * current pointer.
 105  */
 106
 107 static char *
 108 check_patterns (char *p)
 109 {
 110     static const char def_name[] = "shell_patterns=";
 111     char *p0 = p;
 112
 113     if (strncmp (p, def_name, sizeof (def_name) - 1) != 0)
 114         return p0;
 115
 116     p += sizeof (def_name) - 1;
 117     if (*p == '1')
 118         easy_patterns = TRUE;
 119     else if (*p == '0')
 120         easy_patterns = FALSE;
 121     else
 122         return p0;
 123
 124     /* Skip spaces */
 125     p++;
 126     while (whiteness (*p))
 127         p++;
 128     return p;
 129 }
 130
 131 /* --------------------------------------------------------------------------------------------- */
 132 /** Copies a whitespace separated argument from p to arg. Returns the
 133    point after argument. */
 134
 135 static char *
 136 extract_arg (char *p, char *arg, int size)
 137 {
 138     while (*p != '\0' && whiteness (*p))
 139         p++;
 140
 141     /* support quote space .mnu */
 142     while (*p != '\0' && (*p != ' ' || *(p - 1) == '\\') && *p != '\t' && *p != '\n')
 143     {
 144         char *np;
 145
 146         np = str_get_next_char (p);
 147         if (np - p >= size)
 148             break;
 149         memcpy (arg, p, np - p);
 150         arg += np - p;
 151         size -= np - p;
 152         p = np;
 153     }
 154     *arg = '\0';
 155     if (*p == '\0' || *p == '\n')
 156         str_prev_char (&p);
 157     return p;
 158 }
 159
 160 /* --------------------------------------------------------------------------------------------- */
 161 /* Tests whether the selected file in the panel is of any of the types
 162    specified in argument. */
 163
 164 static gboolean
 165 test_type (WPanel * panel, char *arg)
 166 {
 167     int result = 0;             /* False by default */
 168     mode_t st_mode = panel->dir.list[panel->selected].st.st_mode;
 169
 170     for (; *arg != '\0'; arg++)
 171     {
 172         switch (*arg)
 173         {
 174         case 'n':              /* Not a directory */
 175             result |= !S_ISDIR (st_mode);
 176             break;
 177         case 'r':              /* Regular file */
 178             result |= S_ISREG (st_mode);
 179             break;
 180         case 'd':              /* Directory */
 181             result |= S_ISDIR (st_mode);
 182             break;
 183         case 'l':              /* Link */
 184             result |= S_ISLNK (st_mode);
 185             break;
 186         case 'c':              /* Character special */
 187             result |= S_ISCHR (st_mode);
 188             break;
 189         case 'b':              /* Block special */
 190             result |= S_ISBLK (st_mode);
 191             break;
 192         case 'f':              /* Fifo (named pipe) */
 193             result |= S_ISFIFO (st_mode);
 194             break;
 195         case 's':              /* Socket */
 196             result |= S_ISSOCK (st_mode);
 197             break;
 198         case 'x':              /* Executable */
 199             result |= (st_mode & 0111) != 0 ? 1 : 0;
 200             break;
 201         case 't':
 202             result |= panel->marked != 0 ? 1 : 0;
 203             break;
 204         default:
 205             debug_error = TRUE;
 206             break;
 207         }
 208     }
 209
 210     return (result != 0);
 211 }
 212
 213 /* --------------------------------------------------------------------------------------------- */
 214 /** Calculates the truth value of the next condition starting from
 215    p. Returns the point after condition. */
 216
 217 static char *
 218 test_condition (const WEdit * edit_widget, char *p, gboolean * condition)
 219 {
 220     char arg[256];
 221     const mc_search_type_t search_type = easy_patterns ? MC_SEARCH_T_GLOB : MC_SEARCH_T_REGEX;
 222
 223     /* Handle one condition */
 224     for (; *p != '\n' && *p != '&' && *p != '|'; p++)
 225     {
 226         WPanel *panel = NULL;
 227
 228         /* support quote space .mnu */
 229         if ((*p == ' ' && *(p - 1) != '\\') || *p == '\t')
 230             continue;
 231         if (*p >= 'a')
 232             panel = current_panel;
 233         else if (get_other_type () == view_listing)
 234             panel = other_panel;
 235
 236         *p |= 0x20;
 237
 238         switch (*p++)
 239         {
 240         case '!':
 241             p = test_condition (edit_widget, p, condition);
 242             *condition = !*condition;
 243             str_prev_char (&p);
 244             break;
 245         case 'f':              /* file name pattern */
 246             p = extract_arg (p, arg, sizeof (arg));
 247 #ifdef USE_INTERNAL_EDIT
 248             if (edit_widget != NULL)
 249             {
 250                 const char *edit_filename;
 251
 252                 edit_filename = edit_get_file_name (edit_widget);
 253                 *condition = mc_search (arg, DEFAULT_CHARSET, edit_filename, search_type);
 254             }
 255             else
 256 #endif
 257                 *condition = panel != NULL &&
 258                     mc_search (arg, DEFAULT_CHARSET, panel->dir.list[panel->selected].fname,
 259                                search_type);
 260             break;
 261         case 'y':              /* syntax pattern */
 262 #ifdef USE_INTERNAL_EDIT
 263             if (edit_widget != NULL)
 264             {
 265                 const char *syntax_type;
 266
 267                 syntax_type = edit_get_syntax_type (edit_widget);
 268                 if (syntax_type != NULL)
 269                 {
 270                     p = extract_arg (p, arg, sizeof (arg));
 271                     *condition = mc_search (arg, DEFAULT_CHARSET, syntax_type, MC_SEARCH_T_NORMAL);
 272                 }
 273             }
 274 #endif
 275             break;
 276         case 'd':
 277             p = extract_arg (p, arg, sizeof (arg));
 278             *condition = panel != NULL
 279                 && mc_search (arg, DEFAULT_CHARSET, vfs_path_as_str (panel->cwd_vpath),
 280                               search_type);
 281             break;
 282         case 't':
 283             p = extract_arg (p, arg, sizeof (arg));
 284             *condition = panel != NULL && test_type (panel, arg);
 285             break;
 286         case 'x':              /* executable */
 287             {
 288                 struct stat status;
 289
 290                 p = extract_arg (p, arg, sizeof (arg));
 291                 *condition = stat (arg, &status) == 0 && is_exe (status.st_mode);
 292                 break;
 293             }
 294         default:
 295             debug_error = TRUE;
 296             break;
 297         }                       /* switch */
 298     }                           /* while */
 299     return p;
 300 }
 301
 302 /* --------------------------------------------------------------------------------------------- */
 303 /** General purpose condition debug output handler */
 304
 305 static void
 306 debug_out (char *start, char *end, gboolean condition)
 307 {
 308     static char *msg = NULL;
 309
 310     if (start == NULL && end == NULL)
 311     {
 312         /* Show output */
 313         if (debug_flag && msg != NULL)
 314         {
 315             size_t len;
 316
 317             len = strlen (msg);
 318             if (len != 0)
 319                 msg[len - 1] = '\0';
 320             message (D_NORMAL, _("Debug"), "%s", msg);
 321
 322         }
 323         debug_flag = FALSE;
 324         MC_PTR_FREE (msg);
 325     }
 326     else
 327     {
 328         const char *type;
 329         char *p;
 330
 331         /* Save debug info for later output */
 332         if (!debug_flag)
 333             return;
 334         /* Save the result of the condition */
 335         if (debug_error)
 336         {
 337             type = _("ERROR:");
 338             debug_error = FALSE;
 339         }
 340         else if (condition)
 341             type = _("True:");
 342         else
 343             type = _("False:");
 344         /* This is for debugging, don't need to be super efficient.  */
 345         if (end == NULL)
 346             p = g_strdup_printf ("%s %s %c \n", msg ? msg : "", type, *start);
 347         else
 348             p = g_strdup_printf ("%s %s %.*s \n", msg ? msg : "", type, (int) (end - start), start);
 349         g_free (msg);
 350         msg = p;
 351     }
 352 }
 353
 354 /* --------------------------------------------------------------------------------------------- */
 355 /** Calculates the truth value of one lineful of conditions. Returns
 356    the point just before the end of line. */
 357
 358 static char *
 359 test_line (const WEdit * edit_widget, char *p, gboolean * result)
 360 {
 361     char operator;
 362
 363     /* Repeat till end of line */
 364     while (*p != '\0' && *p != '\n')
 365     {
 366         char *debug_start, *debug_end;
 367         gboolean condition = TRUE;
 368
 369         /* support quote space .mnu */
 370         while ((*p == ' ' && *(p - 1) != '\\') || *p == '\t')
 371             p++;
 372         if (*p == '\0' || *p == '\n')
 373             break;
 374         operator = *p++;
 375         if (*p == '?')
 376         {
 377             debug_flag = TRUE;
 378             p++;
 379         }
 380         /* support quote space .mnu */
 381         while ((*p == ' ' && *(p - 1) != '\\') || *p == '\t')
 382             p++;
 383         if (*p == '\0' || *p == '\n')
 384             break;
 385
 386         debug_start = p;
 387         p = test_condition (edit_widget, p, &condition);
 388         debug_end = p;
 389         /* Add one debug statement */
 390         debug_out (debug_start, debug_end, condition);
 391
 392         switch (operator)
 393         {
 394         case '+':
 395         case '=':
 396             /* Assignment */
 397             *result = condition;
 398             break;
 399         case '&':              /* Logical and */
 400             *result = *result && condition;
 401             break;
 402         case '|':              /* Logical or */
 403             *result = *result || condition;
 404             break;
 405         default:
 406             debug_error = TRUE;
 407             break;
 408         }                       /* switch */
 409         /* Add one debug statement */
 410         debug_out (&operator, NULL, *result);
 411
 412     }                           /* while (*p != '\n') */
 413     /* Report debug message */
 414     debug_out (NULL, NULL, TRUE);
 415
 416     if (*p == '\0' || *p == '\n')
 417         str_prev_char (&p);
 418     return p;
 419 }
 420
 421 /* --------------------------------------------------------------------------------------------- */
 422 /** FIXME: recode this routine on version 3.0, it could be cleaner */
 423
 424 static void
 425 execute_menu_command (const WEdit * edit_widget, const char *commands, gboolean show_prompt)
 426 {
 427     FILE *cmd_file;
 428     int cmd_file_fd;
 429     gboolean expand_prefix_found = FALSE;
 430     char *parameter = NULL;
 431     gboolean do_quote = FALSE;
 432     char lc_prompt[80];
 433     int col;
 434     vfs_path_t *file_name_vpath;
 435     gboolean run_view = FALSE;
 436
 437     /* Skip menu entry title line */
 438     commands = strchr (commands, '\n');
 439     if (commands == NULL)
 440         return;
 441
 442     cmd_file_fd = mc_mkstemps (&file_name_vpath, "mcusr", SCRIPT_SUFFIX);
 443
 444     if (cmd_file_fd == -1)
 445     {
 446         message (D_ERROR, MSG_ERROR, _("Cannot create temporary command file\n%s"),
 447                  unix_error_string (errno));
 448         vfs_path_free (file_name_vpath);
 449         return;
 450     }
 451
 452     cmd_file = fdopen (cmd_file_fd, "w");
 453     fputs ("#! /bin/sh\n", cmd_file);
 454     commands++;
 455
 456     for (col = 0; *commands != '\0'; commands++)
 457     {
 458         if (col == 0)
 459         {
 460             if (!whitespace (*commands))
 461                 break;
 462             while (whitespace (*commands))
 463                 commands++;
 464             if (*commands == '\0')
 465                 break;
 466         }
 467         col++;
 468         if (*commands == '\n')
 469             col = 0;
 470         if (parameter != NULL)
 471         {
 472             if (*commands == '}')
 473             {
 474                 *parameter = '\0';
 475                 parameter =
 476                     input_dialog (_("Parameter"), lc_prompt, MC_HISTORY_FM_MENU_EXEC_PARAM, "",
 477                                   INPUT_COMPLETE_FILENAMES | INPUT_COMPLETE_CD |
 478                                   INPUT_COMPLETE_HOSTNAMES | INPUT_COMPLETE_VARIABLES |
 479                                   INPUT_COMPLETE_USERNAMES);
 480                 if (parameter == NULL || *parameter == '\0')
 481                 {
 482                     /* User canceled */
 483                     fclose (cmd_file);
 484                     mc_unlink (file_name_vpath);
 485                     vfs_path_free (file_name_vpath);
 486                     return;
 487                 }
 488                 if (do_quote)
 489                 {
 490                     char *tmp;
 491
 492                     tmp = name_quote (parameter, FALSE);
 493                     fputs (tmp, cmd_file);
 494                     g_free (tmp);
 495                 }
 496                 else
 497                     fputs (parameter, cmd_file);
 498
 499                 MC_PTR_FREE (parameter);
 500             }
 501             else if (parameter < lc_prompt + sizeof (lc_prompt) - 1)
 502                 *parameter++ = *commands;
 503         }
 504         else if (expand_prefix_found)
 505         {
 506             expand_prefix_found = FALSE;
 507             if (g_ascii_isdigit ((gchar) * commands))
 508             {
 509                 do_quote = (atoi (commands) != 0);
 510                 while (g_ascii_isdigit ((gchar) * commands))
 511                     commands++;
 512             }
 513             if (*commands == '{')
 514                 parameter = lc_prompt;
 515             else
 516             {
 517                 char *text;
 518
 519                 text = expand_format (edit_widget, *commands, do_quote);
 520                 fputs (text, cmd_file);
 521                 g_free (text);
 522             }
 523         }
 524         else if (*commands == '%')
 525         {
 526             int i;
 527
 528             i = check_format_view (commands + 1);
 529             if (i != 0)
 530             {
 531                 commands += i;
 532                 run_view = TRUE;
 533             }
 534             else
 535             {
 536                 do_quote = TRUE;        /* Default: Quote expanded macro */
 537                 expand_prefix_found = TRUE;
 538             }
 539         }
 540         else
 541             fputc (*commands, cmd_file);
 542     }
 543
 544     fclose (cmd_file);
 545     mc_chmod (file_name_vpath, S_IRWXU);
 546
 547     if (run_view)
 548     {
 549         mcview_viewer (vfs_path_as_str (file_name_vpath), NULL, 0, 0, 0);
 550         dialog_switch_process_pending ();
 551     }
 552     else
 553     {
 554         /* execute the command indirectly to allow execution even
 555          * on no-exec filesystems. */
 556         char *cmd;
 557
 558         cmd = g_strconcat ("/bin/sh ", vfs_path_as_str (file_name_vpath), (char *) NULL);
 559
 560         if (show_prompt)
 561             shell_execute (cmd, EXECUTE_HIDE);
 562         else if (system (cmd) == -1)
 563             message (D_ERROR, MSG_ERROR, "%s", _("Error calling program"));
 564
 565         g_free (cmd);
 566     }
 567     mc_unlink (file_name_vpath);
 568     vfs_path_free (file_name_vpath);
 569 }
 570
 571 /* --------------------------------------------------------------------------------------------- */
 572 /**
 573  **     Check owner of the menu file. Using menu file is allowed, if
 574  **     owner of the menu is root or the actual user. In either case
 575  **     file should not be group and word-writable.
 576  **
 577  **     Q. Should we apply this routine to system and home menu (and .ext files)?
 578  */
 579
 580 static gboolean
 581 menu_file_own (char *path)
 582 {
 583     struct stat st;
 584
 585     if (stat (path, &st) == 0 && (st.st_uid == 0 || (st.st_uid == geteuid ()) != 0)
 586         && ((st.st_mode & (S_IWGRP | S_IWOTH)) == 0))
 587         return TRUE;
 588
 589     if (verbose)
 590         message (D_NORMAL, _("Warning -- ignoring file"),
 591                  _("File %s is not owned by root or you or is world writable.\n"
 592                    "Using it may compromise your security"), path);
 593
 594     return FALSE;
 595 }
 596
 597 /* --------------------------------------------------------------------------------------------- */
 598 /*** public functions ****************************************************************************/
 599 /* --------------------------------------------------------------------------------------------- */
 600
 601 /* Formats defined:
 602    %%  The % character
 603    %f  The current file in the active panel (if non-local vfs, file will be copied locally
 604    and %f will be full path to it) or the opened file in the internal editor.
 605    %p  Likewise.
 606    %d  The current working directory
 607    %s  "Selected files"; the tagged files if any, otherwise the current file
 608    %t  Tagged files
 609    %u  Tagged files (and they are untagged on return from expand_format)
 610    %view Runs the commands and pipes standard output to the view command.
 611    If %view is immediately followed by '{', recognize keywords
 612    ascii, hex, nroff and unform
 613
 614    If the format letter is in uppercase, it refers to the other panel.
 615
 616    With a number followed the % character you can turn quoting on (default)
 617    and off. For example:
 618    %f    quote expanded macro
 619    %1f   ditto
 620    %0f   don't quote expanded macro
 621
 622    expand_format returns a memory block that must be free()d.
 623  */
 624
 625 /* Returns how many characters we should advance if %view was found */
 626 int
 627 check_format_view (const char *p)
 628 {
 629     const char *q = p;
 630
 631     if (strncmp (p, "view", 4) == 0)
 632     {
 633         q += 4;
 634         if (*q == '{')
 635         {
 636             for (q++; *q != '\0' && *q != '}'; q++)
 637             {
 638                 if (strncmp (q, DEFAULT_CHARSET, 5) == 0)
 639                 {
 640                     mcview_global_flags.hex = FALSE;
 641                     q += 4;
 642                 }
 643                 else if (strncmp (q, "hex", 3) == 0)
 644                 {
 645                     mcview_global_flags.hex = TRUE;
 646                     q += 2;
 647                 }
 648                 else if (strncmp (q, "nroff", 5) == 0)
 649                 {
 650                     mcview_global_flags.nroff = TRUE;
 651                     q += 4;
 652                 }
 653                 else if (strncmp (q, "unform", 6) == 0)
 654                 {
 655                     mcview_global_flags.nroff = FALSE;
 656                     q += 5;
 657                 }
 658             }
 659             if (*q == '}')
 660                 q++;
 661         }
 662         return q - p;
 663     }
 664     return 0;
 665 }
 666
 667 /* --------------------------------------------------------------------------------------------- */
 668
 669 int
 670 check_format_cd (const char *p)
 671 {
 672     return (strncmp (p, "cd", 2)) != 0 ? 0 : 3;
 673 }
 674
 675 /* --------------------------------------------------------------------------------------------- */
 676 /* Check if p has a "^var\{var-name\}" */
 677 /* Returns the number of skipped characters (zero on not found) */
 678 /* V will be set to the expanded variable name */
 679
 680 int
 681 check_format_var (const char *p, char **v)
 682 {
 683     *v = NULL;
 684
 685     if (strncmp (p, "var{", 4) == 0)
 686     {
 687         const char *q = p;
 688         const char *dots = NULL;
 689         const char *value;
 690         char *var_name;
 691
 692         for (q += 4; *q != '\0' && *q != '}'; q++)
 693         {
 694             if (*q == ':')
 695                 dots = q + 1;
 696         }
 697         if (*q == '\0')
 698             return 0;
 699
 700         if (dots == NULL || dots == q + 5)
 701         {
 702             message (D_ERROR,
 703                      _("Format error on file Extensions File"),
 704                      !dots ? _("The %%var macro has no default")
 705                      : _("The %%var macro has no variable"));
 706             return 0;
 707         }
 708
 709         /* Copy the variable name */
 710         var_name = g_strndup (p + 4, dots - 2 - (p + 3));
 711         value = getenv (var_name);
 712         g_free (var_name);
 713
 714         if (value != NULL)
 715             *v = g_strdup (value);
 716         else
 717             *v = g_strndup (dots, q - dots);
 718
 719         return q - p;
 720     }
 721     return 0;
 722 }
 723
 724 /* --------------------------------------------------------------------------------------------- */
 725
 726 char *
 727 expand_format (const WEdit * edit_widget, char c, gboolean do_quote)
 728 {
 729     WPanel *panel = NULL;
 730     char *(*quote_func) (const char *, gboolean);
 731     const char *fname = NULL;
 732     char *result;
 733     char c_lc;
 734
 735 #ifndef USE_INTERNAL_EDIT
 736     (void) edit_widget;
 737 #endif
 738
 739     if (c == '%')
 740         return g_strdup ("%");
 741
 742     switch (mc_global.mc_run_mode)
 743     {
 744     case MC_RUN_FULL:
 745 #ifdef USE_INTERNAL_EDIT
 746         if (edit_widget != NULL)
 747             fname = edit_get_file_name (edit_widget);
 748         else
 749 #endif
 750         {
 751             if (g_ascii_islower ((gchar) c))
 752                 panel = current_panel;
 753             else
 754             {
 755                 if (get_other_type () != view_listing)
 756                     return g_strdup ("");
 757                 panel = other_panel;
 758             }
 759
 760             fname = panel->dir.list[panel->selected].fname;
 761         }
 762         break;
 763
 764 #ifdef USE_INTERNAL_EDIT
 765     case MC_RUN_EDITOR:
 766         fname = edit_get_file_name (edit_widget);
 767         break;
 768 #endif
 769
 770     default:
 771         /* other modes don't use formats */
 772         return g_strdup ("");
 773     }
 774
 775     if (do_quote)
 776         quote_func = name_quote;
 777     else
 778         quote_func = fake_name_quote;
 779
 780     c_lc = g_ascii_tolower ((gchar) c);
 781
 782     switch (c_lc)
 783     {
 784     case 'f':
 785     case 'p':
 786         result = quote_func (fname, FALSE);
 787         goto ret;
 788     case 'x':
 789         result = quote_func (extension (fname), FALSE);
 790         goto ret;
 791     case 'd':
 792         {
 793             const char *cwd;
 794             char *qstr;
 795
 796             if (panel != NULL)
 797                 cwd = vfs_path_as_str (panel->cwd_vpath);
 798             else
 799                 cwd = vfs_get_current_dir ();
 800
 801             qstr = quote_func (cwd, FALSE);
 802
 803             result = qstr;
 804             goto ret;
 805         }
 806     case 'c':
 807 #ifdef USE_INTERNAL_EDIT
 808         if (edit_widget != NULL)
 809         {
 810             result = g_strdup_printf ("%u", (unsigned int) edit_get_cursor_offset (edit_widget));
 811             goto ret;
 812         }
 813 #endif
 814         break;
 815     case 'i':                  /* indent equal number cursor position in line */
 816 #ifdef USE_INTERNAL_EDIT
 817         if (edit_widget != NULL)
 818         {
 819             result = g_strnfill (edit_get_curs_col (edit_widget), ' ');
 820             goto ret;
 821         }
 822 #endif
 823         break;
 824     case 'y':                  /* syntax type */
 825 #ifdef USE_INTERNAL_EDIT
 826         if (edit_widget != NULL)
 827         {
 828             const char *syntax_type;
 829
 830             syntax_type = edit_get_syntax_type (edit_widget);
 831             if (syntax_type != NULL)
 832             {
 833                 result = g_strdup (syntax_type);
 834                 goto ret;
 835             }
 836         }
 837 #endif
 838         break;
 839     case 'k':                  /* block file name */
 840     case 'b':                  /* block file name / strip extension */
 841 #ifdef USE_INTERNAL_EDIT
 842         if (edit_widget != NULL)
 843         {
 844             char *file;
 845
 846             file = mc_config_get_full_path (EDIT_HOME_BLOCK_FILE);
 847             result = quote_func (file, FALSE);
 848             g_free (file);
 849             goto ret;
 850         }
 851 #endif
 852         if (c_lc == 'b')
 853         {
 854             result = strip_ext (quote_func (fname, FALSE));
 855             goto ret;
 856         }
 857         break;
 858     case 'n':                  /* strip extension in editor */
 859 #ifdef USE_INTERNAL_EDIT
 860         if (edit_widget != NULL)
 861         {
 862             result = strip_ext (quote_func (fname, FALSE));
 863             goto ret;
 864         }
 865 #endif
 866         break;
 867     case 'm':                  /* menu file name */
 868         if (menu != NULL)
 869         {
 870             result = quote_func (menu, FALSE);
 871             goto ret;
 872         }
 873         break;
 874     case 's':
 875         if (panel == NULL || panel->marked == 0)
 876         {
 877             result = quote_func (fname, FALSE);
 878             goto ret;
 879         }
 880
 881         MC_FALLTHROUGH;
 882
 883     case 't':
 884     case 'u':
 885         {
 886             GString *block;
 887             int i;
 888
 889             if (panel == NULL)
 890             {
 891                 result = g_strdup ("");
 892                 goto ret;
 893             }
 894
 895             block = g_string_sized_new (16);
 896
 897             for (i = 0; i < panel->dir.len; i++)
 898                 if (panel->dir.list[i].f.marked)
 899                 {
 900                     char *tmp;
 901
 902                     tmp = quote_func (panel->dir.list[i].fname, FALSE);
 903                     g_string_append (block, tmp);
 904                     g_string_append_c (block, ' ');
 905                     g_free (tmp);
 906
 907                     if (c_lc == 'u')
 908                         do_file_mark (panel, i, 0);
 909                 }
 910             result = g_string_free (block, FALSE);
 911             goto ret;
 912         }                       /* sub case block */
 913     default:
 914         break;
 915     }                           /* switch */
 916
 917     result = g_strdup ("% ");
 918     result[1] = c;
 919   ret:
 920     return result;
 921 }
 922
 923 /* --------------------------------------------------------------------------------------------- */
 924 /**
 925  * If edit_widget is NULL then we are called from the mc menu,
 926  * otherwise we are called from the mcedit menu.
 927  */
 928
 929 gboolean
 930 user_menu_cmd (const WEdit * edit_widget, const char *menu_file, int selected_entry)
 931 {
 932     char *p;
 933     char *data, **entries;
 934     int max_cols, menu_lines, menu_limit;
 935     int col, i;
 936     gboolean accept_entry = TRUE;
 937     int selected;
 938     gboolean old_patterns;
 939     gboolean res = FALSE;
 940     gboolean interactive = TRUE;
 941
 942     if (!vfs_current_is_local ())
 943     {
 944         message (D_ERROR, MSG_ERROR, "%s", _("Cannot execute commands on non-local filesystems"));
 945         return FALSE;
 946     }
 947     if (menu_file != NULL)
 948         menu = g_strdup (menu_file);
 949     else
 950         menu = g_strdup (edit_widget != NULL ? EDIT_LOCAL_MENU : MC_LOCAL_MENU);
 951     if (!exist_file (menu) || !menu_file_own (menu))
 952     {
 953         if (menu_file != NULL)
 954         {
 955             message (D_ERROR, MSG_ERROR, _("Cannot open file %s\n%s"), menu,
 956                      unix_error_string (errno));
 957             MC_PTR_FREE (menu);
 958             return FALSE;
 959         }
 960
 961         g_free (menu);
 962         if (edit_widget != NULL)
 963             menu = mc_config_get_full_path (EDIT_HOME_MENU);
 964         else
 965             menu = mc_config_get_full_path (MC_USERMENU_FILE);
 966
 967         if (!exist_file (menu))
 968         {
 969             g_free (menu);
 970             menu =
 971                 mc_build_filename (mc_config_get_home_dir (),
 972                                    edit_widget != NULL ? EDIT_GLOBAL_MENU : MC_GLOBAL_MENU,
 973                                    (char *) NULL);
 974             if (!exist_file (menu))
 975             {
 976                 g_free (menu);
 977                 menu =
 978                     mc_build_filename (mc_global.sysconfig_dir,
 979                                        edit_widget != NULL ? EDIT_GLOBAL_MENU : MC_GLOBAL_MENU,
 980                                        (char *) NULL);
 981                 if (!exist_file (menu))
 982                 {
 983                     g_free (menu);
 984                     menu =
 985                         mc_build_filename (mc_global.share_data_dir,
 986                                            edit_widget != NULL ? EDIT_GLOBAL_MENU : MC_GLOBAL_MENU,
 987                                            (char *) NULL);
 988                 }
 989             }
 990         }
 991     }
 992
 993     if (!g_file_get_contents (menu, &data, NULL, NULL))
 994     {
 995         message (D_ERROR, MSG_ERROR, _("Cannot open file %s\n%s"), menu, unix_error_string (errno));
 996         MC_PTR_FREE (menu);
 997         return FALSE;
 998     }
 999
1000     max_cols = 0;
1001     selected = 0;
1002     menu_limit = 0;
1003     entries = NULL;
1004
1005     /* Parse the menu file */
1006     old_patterns = easy_patterns;
1007     p = check_patterns (data);
1008     for (menu_lines = col = 0; *p != '\0'; str_next_char (&p))
1009     {
1010         if (menu_lines >= menu_limit)
1011         {
1012             char **new_entries;
1013
1014             menu_limit += MAX_ENTRIES;
1015             new_entries = g_try_realloc (entries, sizeof (new_entries[0]) * menu_limit);
1016             if (new_entries == NULL)
1017                 break;
1018
1019             entries = new_entries;
1020             new_entries += menu_limit;
1021             while (--new_entries >= &entries[menu_lines])
1022                 *new_entries = NULL;
1023         }
1024
1025         if (col == 0 && entries[menu_lines] == NULL)
1026             switch (*p)
1027             {
1028             case '#':
1029                 /* show prompt if first line of external script is #interactive */
1030                 if (selected_entry >= 0 && strncmp (p, "#silent", 7) == 0)
1031                     interactive = FALSE;
1032                 /* A commented menu entry */
1033                 accept_entry = TRUE;
1034                 break;
1035
1036             case '+':
1037                 if (*(p + 1) == '=')
1038                 {
1039                     /* Combined adding and default */
1040                     p = test_line (edit_widget, p + 1, &accept_entry);
1041                     if (selected == 0 && accept_entry)
1042                         selected = menu_lines;
1043                 }
1044                 else
1045                 {
1046                     /* A condition for adding the entry */
1047                     p = test_line (edit_widget, p, &accept_entry);
1048                 }
1049                 break;
1050
1051             case '=':
1052                 if (*(p + 1) == '+')
1053                 {
1054                     /* Combined adding and default */
1055                     p = test_line (edit_widget, p + 1, &accept_entry);
1056                     if (selected == 0 && accept_entry)
1057                         selected = menu_lines;
1058                 }
1059                 else
1060                 {
1061                     /* A condition for making the entry default */
1062                     i = 1;
1063                     p = test_line (edit_widget, p, &i);
1064                     if (selected == 0 && i != 0)
1065                         selected = menu_lines;
1066                 }
1067                 break;
1068
1069             default:
1070                 if (!whitespace (*p) && str_isprint (p))
1071                 {
1072                     /* A menu entry title line */
1073                     if (accept_entry)
1074                         entries[menu_lines] = p;
1075                     else
1076                         accept_entry = TRUE;
1077                 }
1078                 break;
1079             }
1080
1081         if (*p == '\n')
1082         {
1083             if (entries[menu_lines] != NULL)
1084             {
1085                 menu_lines++;
1086                 accept_entry = TRUE;
1087             }
1088             max_cols = MAX (max_cols, col);
1089             col = 0;
1090         }
1091         else
1092         {
1093             if (*p == '\t')
1094                 *p = ' ';
1095             col++;
1096         }
1097     }
1098
1099     if (menu_lines == 0)
1100     {
1101         message (D_ERROR, MSG_ERROR, _("No suitable entries found in %s"), menu);
1102         res = FALSE;
1103     }
1104     else
1105     {
1106         if (selected_entry >= 0)
1107             selected = selected_entry;
1108         else
1109         {
1110             Listbox *listbox;
1111
1112             max_cols = MIN (MAX (max_cols, col), MAX_ENTRY_LEN);
1113
1114             /* Create listbox */
1115             listbox = create_listbox_window (menu_lines, max_cols + 2, _("User menu"),
1116                                              "[Edit Menu File]");
1117             /* insert all the items found */
1118             for (i = 0; i < menu_lines; i++)
1119             {
1120                 p = entries[i];
1121                 LISTBOX_APPEND_TEXT (listbox, (unsigned char) p[0],
1122                                      extract_line (p, p + MAX_ENTRY_LEN), p, FALSE);
1123             }
1124             /* Select the default entry */
1125             listbox_select_entry (listbox->list, selected);
1126
1127             selected = run_listbox (listbox);
1128         }
1129         if (selected >= 0)
1130         {
1131             execute_menu_command (edit_widget, entries[selected], interactive);
1132             res = TRUE;
1133         }
1134
1135         do_refresh ();
1136     }
1137
1138     easy_patterns = old_patterns;
1139     MC_PTR_FREE (menu);
1140     g_free (entries);
1141     g_free (data);
1142     return res;
1143 }
1144
1145 /* --------------------------------------------------------------------------------------------- */