diff options
Diffstat (limited to 'util/grub-script-check.c')
| -rw-r--r-- | util/grub-script-check.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/util/grub-script-check.c b/util/grub-script-check.c new file mode 100644 index 0000000..2d1b31c --- /dev/null +++ b/util/grub-script-check.c @@ -0,0 +1,201 @@ +/* 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; +} |