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/* grub-script-check.c - check grub script file for syntax errors */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <grub/types.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/i18n.h>
#include <grub/parser.h>
#include <grub/script_sh.h>
#define _GNU_SOURCE 1
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include "progname.h"
static struct option options[] =
{
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{0, 0, 0, 0}
};
static void
usage (int status)
{
if (status)
fprintf (stderr,
"Try ``%s --help'' for more information.\n", program_name);
else
printf ("\
Usage: %s [PATH]\n\
\n\
Checks GRUB script configuration file for syntax errors.\n\
\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
-v, --verbose print the script as it is being processed\n\
\n\
Report bugs to <%s>.\n\
", program_name,
PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
char *argument;
char *input;
int lineno = 0;
FILE *file = 0;
int verbose = 0;
int found_input = 0;
struct grub_script *script = NULL;
auto grub_err_t get_config_line (char **line, int cont);
grub_err_t get_config_line (char **line, int cont __attribute__ ((unused)))
{
int i;
char *cmdline = 0;
size_t len = 0;
ssize_t read;
read = getline(&cmdline, &len, (file ?: stdin));
if (read == -1)
{
*line = 0;
grub_errno = GRUB_ERR_READ_ERROR;
if (cmdline)
free (cmdline);
return grub_errno;
}
if (verbose)
grub_printf("%s", cmdline);
for (i = 0; cmdline[i] != '\0'; i++)
{
/* Replace tabs and carriage returns with spaces. */
if (cmdline[i] == '\t' || cmdline[i] == '\r')
cmdline[i] = ' ';
/* Replace '\n' with '\0'. */
if (cmdline[i] == '\n')
cmdline[i] = '\0';
}
lineno++;
*line = grub_strdup (cmdline);
free (cmdline);
return 0;
}
set_program_name (argv[0]);
grub_util_init_nls ();
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "hvV", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbose = 1;
break;
default:
usage (1);
break;
}
}
/* Obtain ARGUMENT. */
if (optind >= argc)
{
file = 0; /* read from stdin */
}
else if (optind + 1 != argc)
{
fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);
usage (1);
}
else
{
argument = argv[optind];
file = fopen (argument, "r");
if (! file)
{
fprintf (stderr, "%s: %s: %s\n", program_name, argument, strerror(errno));
usage (1);
}
}
do
{
input = 0;
get_config_line(&input, 0);
if (! input)
break;
found_input = 1;
script = grub_script_parse (input, get_config_line);
if (script)
{
grub_script_execute (script);
grub_script_free (script);
}
grub_free (input);
} while (script != 0);
if (file) fclose (file);
if (found_input && script == 0)
{
fprintf (stderr, "error: line no: %u\n", lineno);
return 1;
}
return 0;
}
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