diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/md5sum.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/md5sum.c b/src/md5sum.c index 9bbdc605f..ff9538a28 100644 --- a/src/md5sum.c +++ b/src/md5sum.c @@ -122,12 +122,17 @@ static bool warn = false; /* With --check, suppress the "OK" printed for each verified file. */ static bool quiet = false; +/* With --check, exit with a non-zero return code if any line is + improperly formatted. */ +static bool strict = false; + /* For long options that have no equivalent short option, use a non-character as a pseudo short option, starting with CHAR_MAX + 1. */ enum { STATUS_OPTION = CHAR_MAX + 1, - QUIET_OPTION + QUIET_OPTION, + STRICT_OPTION }; static struct option const long_options[] = @@ -138,6 +143,7 @@ static struct option const long_options[] = { "status", no_argument, NULL, STATUS_OPTION }, { "text", no_argument, NULL, 't' }, { "warn", no_argument, NULL, 'w' }, + { "strict", no_argument, NULL, STRICT_OPTION }, { GETOPT_HELP_OPTION_DECL }, { GETOPT_VERSION_OPTION_DECL }, { NULL, 0, NULL, 0 } @@ -187,6 +193,9 @@ The following three options are useful only when verifying checksums:\n\ -w, --warn warn about improperly formatted checksum lines\n\ \n\ "), stdout); + fputs (_("\ + --strict with --check, exit non-zero for any invalid input\n\ +"), stdout); fputs (HELP_OPTION_DESCRIPTION, stdout); fputs (VERSION_OPTION_DESCRIPTION, stdout); printf (_("\ @@ -434,6 +443,7 @@ digest_check (const char *checkfile_name) FILE *checkfile_stream; uintmax_t n_misformatted_lines = 0; uintmax_t n_properly_formatted_lines = 0; + uintmax_t n_improperly_formatted_lines = 0; uintmax_t n_mismatched_checksums = 0; uintmax_t n_open_or_read_failures = 0; unsigned char bin_buffer_unaligned[DIGEST_BIN_BYTES + DIGEST_ALIGN]; @@ -501,6 +511,8 @@ digest_check (const char *checkfile_name) checkfile_name, line_number, DIGEST_TYPE_STRING); } + + ++n_improperly_formatted_lines; } else { @@ -603,7 +615,8 @@ digest_check (const char *checkfile_name) return (n_properly_formatted_lines != 0 && n_mismatched_checksums == 0 - && n_open_or_read_failures == 0); + && n_open_or_read_failures == 0 + && (!strict || n_improperly_formatted_lines == 0)); } int @@ -657,6 +670,9 @@ main (int argc, char **argv) warn = false; quiet = true; break; + case STRICT_OPTION: + strict = true; + break; case_GETOPT_HELP_CHAR; case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS); default: @@ -694,6 +710,13 @@ main (int argc, char **argv) usage (EXIT_FAILURE); } + if (strict & !do_check) + { + error (0, 0, + _("the --strict option is meaningful only when verifying checksums")); + usage (EXIT_FAILURE); + } + if (!O_BINARY && binary < 0) binary = 0; |