src/user.c

   1 /* User Menu implementation
   2    Copyright (C) 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   3    2006, 2007 Free Software Foundation, Inc.
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 /** \file user.c
  20  *  \brief Source: user menu implementation
  21  */
  22
  23 #include <config.h>
  24
  25 #include <ctype.h>
  26 #include <errno.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include "global.h"
  32 #include "../src/tty/tty.h"
  33 #include "../src/skin/skin.h"
  34 #include "dir.h"
  35 #include "panel.h"
  36 #include "main.h"
  37 #include "user.h"
  38 #include "layout.h"
  39 #include "execute.h"
  40 #include "setup.h"
  41 #include "history.h"
  42 #include "strutil.h"
  43 #include "../src/search/search.h"
  44
  45 #include "../edit/edit.h"               /* WEdit, BLOCK_FILE */
  46
  47 /* For the simple listbox manager */
  48 #include "dialog.h"
  49 #include "widget.h"
  50 #include "wtools.h"
  51 #include "../src/viewer/mcviewer.h" /* for default_* externs */
  52
  53 #define MAX_ENTRIES 16
  54 #define MAX_ENTRY_LEN 60
  55
  56 static int debug_flag = 0;
  57 static int debug_error = 0;
  58 static char *menu = NULL;
  59
  60 /* Formats defined:
  61    %%  The % character
  62    %f  The current file (if non-local vfs, file will be copied locally and
  63        %f will be full path to it).
  64    %p  The current file
  65    %d  The current working directory
  66    %s  "Selected files"; the tagged files if any, otherwise the current file
  67    %t  Tagged files
  68    %u  Tagged files (and they are untagged on return from expand_format)
  69    %view Runs the commands and pipes standard output to the view command.
  70        If %view is immediately followed by '{', recognize keywords
  71        ascii, hex, nroff and unform
  72
  73    If the format letter is in uppercase, it refers to the other panel.
  74
  75    With a number followed the % character you can turn quoting on (default)
  76    and off. For example:
  77        %f    quote expanded macro
  78        %1f   ditto
  79        %0f   don't quote expanded macro
  80
  81    expand_format returns a memory block that must be free()d.
  82 */
  83
  84 /* Returns how many characters we should advance if %view was found */
  85 int check_format_view (const char *p)
  86 {
  87     const char *q = p;
  88     if (!strncmp (p, "view", 4)) {
  89         q += 4;
  90         if (*q == '{'){
  91             for (q++;*q && *q != '}';q++) {
  92                 if (!strncmp (q, "ascii", 5)) {
  93                     mcview_default_hex_mode = 0;
  94                     q += 4;
  95                 } else if (!strncmp (q, "hex", 3)) {
  96                     mcview_default_hex_mode = 1;
  97                     q += 2;
  98                 } else if (!strncmp (q, "nroff", 5)) {
  99                     mcview_default_nroff_flag = 1;
 100                     q += 4;
 101                 } else if (!strncmp (q, "unform", 6)) {
 102                     mcview_default_nroff_flag = 0;
 103                     q += 5;
 104                 }
 105             }
 106             if (*q == '}')
 107                 q++;
 108         }
 109         return q - p;
 110     }
 111     return 0;
 112 }
 113
 114 int check_format_cd (const char *p)
 115 {
 116     return (strncmp (p, "cd", 2)) ? 0 : 3;
 117 }
 118
 119 /* Check if p has a "^var\{var-name\}" */
 120 /* Returns the number of skipped characters (zero on not found) */
 121 /* V will be set to the expanded variable name */
 122 int check_format_var (const char *p, char **v)
 123 {
 124     const char *q = p;
 125     char *var_name;
 126     const char *value;
 127     const char *dots = 0;
 128
 129     *v = 0;
 130     if (!strncmp (p, "var{", 4)){
 131         for (q += 4; *q && *q != '}'; q++){
 132             if (*q == ':')
 133                 dots = q+1;
 134         }
 135         if (!*q)
 136             return 0;
 137
 138         if (!dots || dots == q+5){
 139             message (D_ERROR,
 140                      _(" Format error on file Extensions File "),
 141                      !dots ? _(" The %%var macro has no default ")
 142                      :       _(" The %%var macro has no variable "));
 143             return 0;
 144         }
 145
 146         /* Copy the variable name */
 147         var_name = g_strndup (p + 4, dots-2 - (p+3));
 148
 149         value = getenv (var_name);
 150         g_free (var_name);
 151         if (value){
 152             *v = g_strdup (value);
 153             return q-p;
 154         }
 155         var_name = g_strndup (dots, q - dots);
 156         *v = var_name;
 157         return q-p;
 158     }
 159     return 0;
 160 }
 161
 162 /* strip file's extension */
 163 static char *
 164 strip_ext(char *ss)
 165 {
 166     register char *s = ss;
 167     char *e = NULL;
 168     while(*s) {
 169         if(*s == '.') e = s;
 170         if(*s == PATH_SEP && e) e=NULL; /* '.' in *directory* name */
 171         s++;
 172     }
 173     if(e) *e = 0;
 174     return ss;
 175 }
 176
 177 char *
 178 expand_format (WEdit *edit_widget, char c, int quote)
 179 {
 180     WPanel *panel = NULL;
 181     char *(*quote_func) (const char *, int);
 182     char *fname = NULL;
 183     char *result;
 184     char c_lc;
 185
 186     if (c == '%')
 187         return g_strdup ("%");
 188
 189     if (edit_one_file == NULL) {
 190         if (g_ascii_islower ((gchar) c))
 191             panel = current_panel;
 192         else {
 193             if (get_other_type () != view_listing)
 194                 return g_strdup ("");
 195             panel = other_panel;
 196         }
 197         fname = panel->dir.list[panel->selected].fname;
 198     }
 199 #ifdef USE_INTERNAL_EDIT
 200     else
 201         fname = str_unconst (edit_get_file_name (edit_widget));
 202 #endif
 203
 204     if (quote)
 205         quote_func = name_quote;
 206     else
 207         quote_func = fake_name_quote;
 208
 209     c_lc = g_ascii_tolower ((gchar) c);
 210
 211     switch (c_lc) {
 212     case 'f':
 213     case 'p':
 214         return (*quote_func) (fname, 0);
 215     case 'x':
 216         return (*quote_func) (extension (fname), 0);
 217     case 'd':
 218         {
 219             char *cwd;
 220             char *qstr;
 221
 222             cwd = g_malloc(MC_MAXPATHLEN + 1);
 223
 224             if (panel)
 225                 g_strlcpy(cwd, panel->cwd, MC_MAXPATHLEN + 1);
 226             else
 227                 mc_get_current_wd(cwd, MC_MAXPATHLEN + 1);
 228
 229             qstr = (*quote_func) (cwd, 0);
 230
 231             g_free (cwd);
 232
 233             return qstr;
 234         }
 235     case 'i':                   /* indent equal number cursor position in line */
 236 #ifdef USE_INTERNAL_EDIT
 237         if (edit_widget)
 238             return g_strnfill (edit_get_curs_col (edit_widget), ' ');
 239 #endif
 240         break;
 241     case 'y':                   /* syntax type */
 242 #ifdef USE_INTERNAL_EDIT
 243         if (edit_widget) {
 244             const char *syntax_type = edit_get_syntax_type (edit_widget);
 245             if (syntax_type != NULL)
 246                 return g_strdup (syntax_type);
 247         }
 248 #endif
 249         break;
 250     case 'k':                   /* block file name */
 251     case 'b':                   /* block file name / strip extension */  {
 252 #ifdef USE_INTERNAL_EDIT
 253             if (edit_widget) {
 254                 char *file = concat_dir_and_file (home_dir, EDIT_BLOCK_FILE);
 255                 fname = (*quote_func) (file, 0);
 256                 g_free (file);
 257                 return fname;
 258             }
 259 #endif
 260             if (c_lc == 'b')
 261                 return strip_ext ((*quote_func) (fname, 0));
 262             break;
 263         }
 264     case 'n':                   /* strip extension in editor */
 265 #ifdef USE_INTERNAL_EDIT
 266         if (edit_widget)
 267             return strip_ext ((*quote_func) (fname, 0));
 268 #endif
 269         break;
 270     case 'm':                   /* menu file name */
 271         if (menu)
 272             return (*quote_func) (menu, 0);
 273         break;
 274     case 's':
 275         if (!panel || !panel->marked)
 276             return (*quote_func) (fname, 0);
 277
 278         /* Fall through */
 279
 280     case 't':
 281     case 'u':
 282         {
 283             int length = 2, i;
 284             char *block, *tmp;
 285
 286             if (!panel)
 287                 return g_strdup ("");
 288
 289             for (i = 0; i < panel->count; i++)
 290                 if (panel->dir.list[i].f.marked)
 291                     length += strlen (panel->dir.list[i].fname) + 1;    /* for space */
 292
 293             block = g_malloc (length * 2 + 1);
 294             *block = 0;
 295             for (i = 0; i < panel->count; i++)
 296                 if (panel->dir.list[i].f.marked) {
 297                     strcat (block, tmp =
 298                             (*quote_func) (panel->dir.list[i].fname, 0));
 299                     g_free (tmp);
 300                     strcat (block, " ");
 301                     if (c_lc == 'u')
 302                         do_file_mark (panel, i, 0);
 303                 }
 304             return block;
 305         }                       /* sub case block */
 306     }                           /* switch */
 307     result = g_strdup ("% ");
 308     result[1] = c;
 309     return result;
 310 }
 311
 312 /*
 313  * Check for the "shell_patterns" directive.  If it's found and valid,
 314  * interpret it and move the pointer past the directive.  Return the
 315  * current pointer.
 316  */
 317 static char *
 318 check_patterns (char *p)
 319 {
 320     static const char def_name[] = "shell_patterns=";
 321     char *p0 = p;
 322
 323     if (strncmp (p, def_name, sizeof (def_name) - 1) != 0)
 324         return p0;
 325
 326     p += sizeof (def_name) - 1;
 327     if (*p == '1')
 328         easy_patterns = 1;
 329     else if (*p == '0')
 330         easy_patterns = 0;
 331     else
 332         return p0;
 333
 334     /* Skip spaces */
 335     p++;
 336     while (*p == '\n' || *p == '\t' || *p == ' ')
 337         p++;
 338     return p;
 339 }
 340
 341 /* Copies a whitespace separated argument from p to arg. Returns the
 342    point after argument. */
 343 static char *extract_arg (char *p, char *arg, int size)
 344 {
 345     char *np;
 346
 347     while (*p && (*p == ' ' || *p == '\t' || *p == '\n'))
 348         p++;
 349                 /* support quote space .mnu */
 350     while (*p && (*p != ' ' || *(p-1) == '\\') && *p != '\t' && *p != '\n') {
 351         np = str_get_next_char (p);
 352         if (np - p >= size) break;
 353         memcpy (arg, p, np - p);
 354         arg+= np - p;
 355         size-= np - p;
 356         p = np;
 357     }
 358     *arg = 0;
 359     if (!*p || *p == '\n')
 360         str_prev_char (&p);
 361     return p;
 362 }
 363
 364 /* Tests whether the selected file in the panel is of any of the types
 365    specified in argument. */
 366 static int test_type (WPanel *panel, char *arg)
 367 {
 368     int result = 0; /* False by default */
 369     int st_mode = panel->dir.list [panel->selected].st.st_mode;
 370
 371     for (;*arg != 0; arg++){
 372         switch (*arg){
 373         case 'n':       /* Not a directory */
 374             result |= !S_ISDIR (st_mode);
 375             break;
 376         case 'r':       /* Regular file */
 377             result |= S_ISREG (st_mode);
 378             break;
 379         case 'd':       /* Directory */
 380             result |= S_ISDIR (st_mode);
 381             break;
 382         case 'l':       /* Link */
 383             result |= S_ISLNK (st_mode);
 384             break;
 385         case 'c':       /* Character special */
 386             result |= S_ISCHR (st_mode);
 387             break;
 388         case 'b':       /* Block special */
 389             result |= S_ISBLK (st_mode);
 390             break;
 391         case 'f':       /* Fifo (named pipe) */
 392             result |= S_ISFIFO (st_mode);
 393             break;
 394         case 's':       /* Socket */
 395             result |= S_ISSOCK (st_mode);
 396             break;
 397         case 'x':       /* Executable */
 398             result |= (st_mode & 0111) ? 1 : 0;
 399             break;
 400         case 't':
 401             result |= panel->marked ? 1 : 0;
 402             break;
 403         default:
 404             debug_error = 1;
 405             break;
 406         }
 407     }
 408     return result;
 409 }
 410
 411 /* Calculates the truth value of the next condition starting from
 412    p. Returns the point after condition. */
 413 static char *
 414 test_condition (WEdit *edit_widget, char *p, int *condition)
 415 {
 416     WPanel *panel;
 417     char arg [256];
 418     mc_search_type_t search_type;
 419
 420     if (easy_patterns) {
 421         search_type = MC_SEARCH_T_GLOB;
 422     } else {
 423         search_type = MC_SEARCH_T_REGEX;
 424     }
 425
 426     /* Handle one condition */
 427     for (;*p != '\n' && *p != '&' && *p != '|'; p++){
 428                 /* support quote space .mnu */
 429         if ((*p == ' ' && *(p-1) != '\\') || *p == '\t')
 430             continue;
 431         if (*p >= 'a')
 432             panel = current_panel;
 433         else {
 434             if (get_other_type () == view_listing)
 435                 panel = other_panel;
 436             else
 437                 panel = NULL;
 438         }
 439         *p |= 0x20;
 440
 441         switch (*p++){
 442         case '!':
 443             p = test_condition (edit_widget, p, condition);
 444             *condition = ! *condition;
 445             str_prev_char (&p);
 446             break;
 447         case 'f': /* file name pattern */
 448             p = extract_arg (p, arg, sizeof (arg));
 449             *condition = panel && mc_search (arg, panel->dir.list [panel->selected].fname, search_type);
 450             break;
 451         case 'y': /* syntax pattern */
 452 #ifdef USE_INTERNAL_EDIT
 453             if (edit_widget) {
 454                 const char *syntax_type = edit_get_syntax_type (edit_widget);
 455                 if (syntax_type != NULL) {
 456                     p = extract_arg (p, arg, sizeof (arg));
 457                     *condition = panel && mc_search (arg, syntax_type, MC_SEARCH_T_NORMAL);
 458                 }
 459             }
 460 #endif
 461             break;
 462         case 'd':
 463             p = extract_arg (p, arg, sizeof (arg));
 464             *condition = panel && mc_search (arg, panel->cwd, search_type);
 465             break;
 466         case 't':
 467             p = extract_arg (p, arg, sizeof (arg));
 468             *condition = panel && test_type (panel, arg);
 469             break;
 470         case 'x': /* executable */
 471         {
 472             struct stat status;
 473
 474             p = extract_arg (p, arg, sizeof (arg));
 475             if (stat (arg, &status) == 0)
 476                 *condition = is_exe (status.st_mode);
 477             else
 478                 *condition = 0;
 479             break;
 480         }
 481         default:
 482             debug_error = 1;
 483             break;
 484         } /* switch */
 485
 486     } /* while */
 487     return p;
 488 }
 489
 490 /* General purpose condition debug output handler */
 491 static void
 492 debug_out (char *start, char *end, int cond)
 493 {
 494     static char *msg;
 495     int len;
 496
 497     if (start == NULL && end == NULL){
 498         /* Show output */
 499         if (debug_flag && msg) {
 500             len = strlen (msg);
 501             if (len)
 502                 msg [len - 1] = 0;
 503             message (D_NORMAL, _(" Debug "), "%s", msg);
 504
 505         }
 506         debug_flag = 0;
 507         g_free (msg);
 508         msg = NULL;
 509     } else {
 510         const char *type;
 511         char *p;
 512
 513         /* Save debug info for later output */
 514         if (!debug_flag)
 515             return;
 516         /* Save the result of the condition */
 517         if (debug_error){
 518             type = _(" ERROR: ");
 519             debug_error = 0;
 520         }
 521         else if (cond)
 522             type = _(" True:  ");
 523         else
 524             type = _(" False: ");
 525         /* This is for debugging, don't need to be super efficient.  */
 526         if (end == NULL)
 527             p = g_strdup_printf ("%s%s%c \n", msg ? msg : "", type, *start);
 528         else
 529             p = g_strdup_printf ("%s%s%.*s \n", msg ? msg : "", type,
 530                         (int) (end - start), start);
 531         g_free (msg);
 532         msg = p;
 533     }
 534 }
 535
 536 /* Calculates the truth value of one lineful of conditions. Returns
 537    the point just before the end of line. */
 538 static char *
 539 test_line (WEdit *edit_widget, char *p, int *result)
 540 {
 541     int condition;
 542     char operator;
 543     char *debug_start, *debug_end;
 544
 545     /* Repeat till end of line */
 546     while (*p && *p != '\n') {
 547         /* support quote space .mnu */
 548         while ((*p == ' ' && *(p-1) != '\\' ) || *p == '\t')
 549             p++;
 550         if (!*p || *p == '\n')
 551             break;
 552         operator = *p++;
 553         if (*p == '?'){
 554             debug_flag = 1;
 555             p++;
 556         }
 557         /* support quote space .mnu */
 558         while ((*p == ' ' && *(p-1) != '\\' ) || *p == '\t')
 559             p++;
 560         if (!*p || *p == '\n')
 561             break;
 562         condition = 1;  /* True by default */
 563
 564         debug_start = p;
 565         p = test_condition (edit_widget, p, &condition);
 566         debug_end = p;
 567         /* Add one debug statement */
 568         debug_out (debug_start, debug_end, condition);
 569
 570         switch (operator){
 571         case '+':
 572         case '=':
 573             /* Assignment */
 574             *result = condition;
 575             break;
 576         case '&':       /* Logical and */
 577             *result &= condition;
 578             break;
 579         case '|':       /* Logical or */
 580             *result |= condition;
 581             break;
 582         default:
 583             debug_error = 1;
 584             break;
 585         } /* switch */
 586         /* Add one debug statement */
 587         debug_out (&operator, NULL, *result);
 588
 589     } /* while (*p != '\n') */
 590     /* Report debug message */
 591     debug_out (NULL, NULL, 1);
 592
 593     if (!*p || *p == '\n')
 594         str_prev_char (&p);
 595     return p;
 596 }
 597
 598 /* FIXME: recode this routine on version 3.0, it could be cleaner */
 599 static void
 600 execute_menu_command (WEdit *edit_widget, const char *commands)
 601 {
 602     FILE *cmd_file;
 603     int  cmd_file_fd;
 604     int  expand_prefix_found = 0;
 605     char *parameter = 0;
 606     int  do_quote = 0;
 607     char prompt [80];
 608     int  col;
 609     char *file_name;
 610     int run_view = 0;
 611
 612     /* Skip menu entry title line */
 613     commands = strchr (commands, '\n');
 614     if (!commands){
 615         return;
 616     }
 617
 618     cmd_file_fd = mc_mkstemps (&file_name, "mcusr", SCRIPT_SUFFIX);
 619
 620     if (cmd_file_fd == -1){
 621         message (D_ERROR, MSG_ERROR, _(" Cannot create temporary command file \n %s "),
 622                  unix_error_string (errno));
 623         return;
 624     }
 625     cmd_file = fdopen (cmd_file_fd, "w");
 626     fputs ("#! /bin/sh\n", cmd_file);
 627     commands++;
 628
 629     for (col = 0; *commands; commands++){
 630         if (col == 0) {
 631             if (*commands != ' ' && *commands != '\t')
 632                 break;
 633             while (*commands == ' ' || *commands == '\t')
 634                 commands++;
 635             if (*commands == 0)
 636                 break;
 637         }
 638         col++;
 639         if (*commands == '\n')
 640             col = 0;
 641         if (parameter){
 642             if (*commands == '}'){
 643                 char *tmp;
 644                 *parameter = 0;
 645                 parameter = input_dialog (_(" Parameter "), prompt, MC_HISTORY_FM_MENU_EXEC_PARAM, "");
 646                 if (!parameter || !*parameter){
 647                     /* User canceled */
 648                     fclose (cmd_file);
 649                     unlink (file_name);
 650                     g_free (file_name);
 651                     return;
 652                 }
 653                 if (do_quote) {
 654                     fputs (tmp = name_quote (parameter, 0), cmd_file);
 655                     g_free (tmp);
 656                 } else
 657                     fputs (parameter, cmd_file);
 658                 g_free (parameter);
 659                 parameter = 0;
 660             } else {
 661                 if (parameter < &prompt [sizeof (prompt) - 1]) {
 662                     *parameter++ = *commands;
 663                 }
 664             }
 665         } else if (expand_prefix_found){
 666             expand_prefix_found = 0;
 667             if (g_ascii_isdigit ((gchar) *commands)) {
 668                 do_quote = atoi (commands);
 669                 while (g_ascii_isdigit ((gchar) *commands))
 670                     commands++;
 671             }
 672             if (*commands == '{')
 673                 parameter = prompt;
 674             else{
 675                 char *text = expand_format (edit_widget, *commands, do_quote);
 676                 fputs (text, cmd_file);
 677                 g_free (text);
 678             }
 679         } else {
 680             if (*commands == '%') {
 681                 int i = check_format_view (commands + 1);
 682                 if (i) {
 683                     commands += i;
 684                     run_view = 1;
 685                 } else {
 686                     do_quote = 1; /* Default: Quote expanded macro */
 687                     expand_prefix_found = 1;
 688                 }
 689             } else
 690                 fputc (*commands, cmd_file);
 691         }
 692     }
 693     fclose (cmd_file);
 694     chmod (file_name, S_IRWXU);
 695     if (run_view) {
 696         run_view = 0;
 697         mcview_viewer (file_name, NULL, &run_view, 0);
 698     } else {
 699         /* execute the command indirectly to allow execution even
 700          * on no-exec filesystems. */
 701         char *cmd = g_strconcat("/bin/sh ", file_name, (char *)NULL);
 702         shell_execute (cmd, EXECUTE_HIDE);
 703         g_free(cmd);
 704     }
 705     unlink (file_name);
 706     g_free (file_name);
 707 }
 708
 709 /*
 710 **      Check owner of the menu file. Using menu file is allowed, if
 711 **      owner of the menu is root or the actual user. In either case
 712 **      file should not be group and word-writable.
 713 **
 714 **      Q. Should we apply this routine to system and home menu (and .ext files)?
 715 */
 716 static int
 717 menu_file_own(char* path)
 718 {
 719     struct stat st;
 720
 721     if (stat (path, &st) == 0
 722         && (!st.st_uid || (st.st_uid == geteuid ()))
 723         && ((st.st_mode & (S_IWGRP | S_IWOTH)) == 0)
 724     ) {
 725         return 1;
 726     }
 727     if (verbose)
 728     {
 729         message (D_NORMAL, _(" Warning -- ignoring file "),
 730                     _("File %s is not owned by root or you or is world writable.\n"
 731                     "Using it may compromise your security"),
 732                 path
 733         );
 734     }
 735     return 0;
 736 }
 737
 738 /*
 739  * If edit_widget is NULL then we are called from the mc menu,
 740  * otherwise we are called from the mcedit menu.
 741  */
 742 void
 743 user_menu_cmd (WEdit *edit_widget)
 744 {
 745     char *p;
 746     char *data, **entries;
 747     int  max_cols, menu_lines, menu_limit;
 748     int  col, i, accept_entry = 1;
 749     int  selected, old_patterns;
 750     Listbox *listbox;
 751
 752     if (!vfs_current_is_local ()){
 753         message (D_ERROR, MSG_ERROR,
 754                  _(" Cannot execute commands on non-local filesystems"));
 755         return;
 756     }
 757
 758     menu = g_strdup (edit_widget ? EDIT_LOCAL_MENU : MC_LOCAL_MENU);
 759     if (!exist_file (menu) || !menu_file_own (menu)){
 760         g_free (menu);
 761         menu = concat_dir_and_file
 762                             (home_dir, edit_widget ? EDIT_HOME_MENU : MC_HOME_MENU);
 763         if (!exist_file (menu)){
 764             g_free (menu);
 765             menu = concat_dir_and_file
 766                         (mc_home, edit_widget ? EDIT_GLOBAL_MENU : MC_GLOBAL_MENU);
 767             if (!exist_file (menu)) {
 768                 g_free (menu);
 769                 menu = concat_dir_and_file
 770                         (mc_home_alt, edit_widget ? EDIT_GLOBAL_MENU : MC_GLOBAL_MENU);
 771             }
 772         }
 773     }
 774
 775     if ((data = load_file (menu)) == NULL){
 776         message (D_ERROR, MSG_ERROR, _(" Cannot open file %s \n %s "),
 777                  menu, unix_error_string (errno));
 778         g_free (menu);
 779         menu = NULL;
 780         return;
 781     }
 782
 783     max_cols = 0;
 784     selected = 0;
 785     menu_limit = 0;
 786     entries = 0;
 787
 788     /* Parse the menu file */
 789     old_patterns = easy_patterns;
 790     p = check_patterns (data);
 791     for (menu_lines = col = 0; *p; str_next_char (&p)){
 792         if (menu_lines >= menu_limit){
 793             char ** new_entries;
 794
 795             menu_limit += MAX_ENTRIES;
 796             new_entries = g_realloc (entries, sizeof (new_entries[0]) * menu_limit);
 797
 798             if (new_entries == 0)
 799                 break;
 800
 801             entries = new_entries;
 802             new_entries += menu_limit;
 803             while (--new_entries >= &entries[menu_lines])
 804                 *new_entries = 0;
 805         }
 806         if (col == 0 && !entries [menu_lines]){
 807             if (*p == '#'){
 808                 /* A commented menu entry */
 809                 accept_entry = 1;
 810             } else if (*p == '+'){
 811                 if (*(p+1) == '='){
 812                     /* Combined adding and default */
 813                     p = test_line (edit_widget, p + 1, &accept_entry);
 814                     if (selected == 0 && accept_entry)
 815                         selected = menu_lines;
 816                 } else {
 817                     /* A condition for adding the entry */
 818                     p = test_line (edit_widget, p, &accept_entry);
 819                 }
 820             } else if (*p == '='){
 821                 if (*(p+1) == '+'){
 822                     /* Combined adding and default */
 823                     p = test_line (edit_widget, p + 1, &accept_entry);
 824                     if (selected == 0 && accept_entry)
 825                         selected = menu_lines;
 826                 } else {
 827                     /* A condition for making the entry default */
 828                     i = 1;
 829                     p = test_line (edit_widget, p, &i);
 830                     if (selected == 0 && i)
 831                         selected = menu_lines;
 832                 }
 833             }
 834             else if (*p != ' ' && *p != '\t' && str_isprint (p)) {
 835                 /* A menu entry title line */
 836                 if (accept_entry)
 837                     entries [menu_lines] = p;
 838                 else
 839                     accept_entry = 1;
 840             }
 841         }
 842         if (*p == '\n'){
 843             if (entries [menu_lines]){
 844                 menu_lines++;
 845                 accept_entry = 1;
 846             }
 847             max_cols = max (max_cols, col);
 848             col = 0;
 849         } else {
 850             if (*p == '\t')
 851                 *p = ' ';
 852             col++;
 853         }
 854     }
 855
 856     if (menu_lines == 0)
 857         message (D_ERROR, MSG_ERROR, _(" No suitable entries found in %s "), menu);
 858     else {
 859         max_cols = min (max (max_cols, col), MAX_ENTRY_LEN);
 860
 861         /* Create listbox */
 862         listbox = create_listbox_window (max_cols+2, menu_lines, _(" User menu "),
 863                                             "[Menu File Edit]");
 864         /* insert all the items found */
 865         for (i = 0; i < menu_lines; i++) {
 866             p = entries [i];
 867             LISTBOX_APPEND_TEXT (listbox, (unsigned char) p[0],
 868                                 extract_line (p, p + MAX_ENTRY_LEN), p);
 869         }
 870         /* Select the default entry */
 871         listbox_select_by_number (listbox->list, selected);
 872
 873         selected = run_listbox (listbox);
 874         if (selected >= 0)
 875             execute_menu_command (edit_widget, entries [selected]);
 876
 877         do_refresh ();
 878     }
 879
 880     easy_patterns = old_patterns;
 881     g_free (menu);
 882     menu = NULL;
 883     g_free (entries);
 884     g_free (data);
 885 }