-/* Compute MD5, SHA1, SHA224, SHA256, SHA384 or SHA512 checksum of files or strings
- Copyright (C) 1995-2005 Free Software Foundation, Inc.
+/* Compute checksums of files or strings.
+ Copyright (C) 1995-2013 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ This program 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 2, or (at your option)
- any later version.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>. */
#if HASH_ALGO_SHA512 || HASH_ALGO_SHA384
# include "sha512.h"
#endif
-#include "getline.h"
#include "error.h"
-#include "quote.h"
+#include "fadvise.h"
#include "stdio--.h"
+#include "xfreopen.h"
-/* The official name of this program (e.g., no `g' prefix). */
+/* The official name of this program (e.g., no 'g' prefix). */
#if HASH_ALGO_MD5
# define PROGRAM_NAME "md5sum"
# define DIGEST_TYPE_STRING "MD5"
# define DIGEST_STREAM md5_stream
-# define DIGEST_BUFFER md5_buffer
# define DIGEST_BITS 128
# define DIGEST_REFERENCE "RFC 1321"
# define DIGEST_ALIGN 4
# define PROGRAM_NAME "sha1sum"
# define DIGEST_TYPE_STRING "SHA1"
# define DIGEST_STREAM sha1_stream
-# define DIGEST_BUFFER sha1_buffer
# define DIGEST_BITS 160
# define DIGEST_REFERENCE "FIPS-180-1"
# define DIGEST_ALIGN 4
# define PROGRAM_NAME "sha256sum"
# define DIGEST_TYPE_STRING "SHA256"
# define DIGEST_STREAM sha256_stream
-# define DIGEST_BUFFER sha256_buffer
# define DIGEST_BITS 256
# define DIGEST_REFERENCE "FIPS-180-2"
# define DIGEST_ALIGN 4
# define PROGRAM_NAME "sha224sum"
# define DIGEST_TYPE_STRING "SHA224"
# define DIGEST_STREAM sha224_stream
-# define DIGEST_BUFFER sha224_buffer
# define DIGEST_BITS 224
# define DIGEST_REFERENCE "RFC 3874"
# define DIGEST_ALIGN 4
# define PROGRAM_NAME "sha512sum"
# define DIGEST_TYPE_STRING "SHA512"
# define DIGEST_STREAM sha512_stream
-# define DIGEST_BUFFER sha512_buffer
# define DIGEST_BITS 512
# define DIGEST_REFERENCE "FIPS-180-2"
# define DIGEST_ALIGN 8
# define PROGRAM_NAME "sha384sum"
# define DIGEST_TYPE_STRING "SHA384"
# define DIGEST_STREAM sha384_stream
-# define DIGEST_BUFFER sha384_buffer
# define DIGEST_BITS 384
# define DIGEST_REFERENCE "FIPS-180-2"
# define DIGEST_ALIGN 8
#define DIGEST_HEX_BYTES (DIGEST_BITS / 4)
#define DIGEST_BIN_BYTES (DIGEST_BITS / 8)
-#define AUTHORS "Ulrich Drepper", "Scott Miller", "David Madore"
+#define AUTHORS \
+ proper_name ("Ulrich Drepper"), \
+ proper_name ("Scott Miller"), \
+ proper_name ("David Madore")
/* The minimum length of a valid digest line. This length does
not include any newline character at the end of a line. */
#define MIN_DIGEST_LINE_LENGTH \
(DIGEST_HEX_BYTES /* length of hexadecimal message digest */ \
- + 2 /* blank and binary indicator */ \
+ + 1 /* blank */ \
+ 1 /* minimum filename length */ )
/* True if any of the files read were the standard input. */
improperly formatted checksum line. */
static bool warn = false;
-/* The name this program was run with. */
-char *program_name;
+/* 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;
+
+/* Whether a BSD reversed format checksum is detected. */
+static int bsd_reversed = -1;
/* 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
+ STATUS_OPTION = CHAR_MAX + 1,
+ QUIET_OPTION,
+ STRICT_OPTION,
+ TAG_OPTION
};
-static const struct option long_options[] =
+static struct option const long_options[] =
{
{ "binary", no_argument, NULL, 'b' },
{ "check", no_argument, NULL, 'c' },
+ { "quiet", no_argument, NULL, QUIET_OPTION },
{ "status", no_argument, NULL, STATUS_OPTION },
{ "text", no_argument, NULL, 't' },
{ "warn", no_argument, NULL, 'w' },
+ { "strict", no_argument, NULL, STRICT_OPTION },
+ { "tag", no_argument, NULL, TAG_OPTION },
{ GETOPT_HELP_OPTION_DECL },
{ GETOPT_VERSION_OPTION_DECL },
{ NULL, 0, NULL, 0 }
usage (int status)
{
if (status != EXIT_SUCCESS)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
+ emit_try_help ();
else
{
printf (_("\
-Usage: %s [OPTION] [FILE]...\n\
+Usage: %s [OPTION]... [FILE]...\n\
Print or check %s (%d-bit) checksums.\n\
With no FILE, or when FILE is -, read standard input.\n\
\n\
"),
- program_name,
- DIGEST_TYPE_STRING,
- DIGEST_BITS);
+ program_name,
+ DIGEST_TYPE_STRING,
+ DIGEST_BITS);
if (O_BINARY)
- fputs (_("\
- -b, --binary read in binary mode (default unless reading tty stdin)\n\
+ fputs (_("\
+ -b, --binary read in binary mode (default unless reading tty stdin)\n\
"), stdout);
else
- fputs (_("\
- -b, --binary read in binary mode\n\
+ fputs (_("\
+ -b, --binary read in binary mode\n\
"), stdout);
printf (_("\
- -c, --check read %s sums from the FILEs and check them\n"),
- DIGEST_TYPE_STRING);
+ -c, --check read %s sums from the FILEs and check them\n"),
+ DIGEST_TYPE_STRING);
+ fputs (_("\
+ --tag create a BSD-style checksum\n\
+"), stdout);
if (O_BINARY)
- fputs (_("\
- -t, --text read in text mode (default if reading tty stdin)\n\
+ fputs (_("\
+ -t, --text read in text mode (default if reading tty stdin)\n\
"), stdout);
else
- fputs (_("\
- -t, --text read in text mode (default)\n\
+ fputs (_("\
+ -t, --text read in text mode (default)\n\
"), stdout);
fputs (_("\
\n\
-The following two options are useful only when verifying checksums:\n\
- --status don't output anything, status code shows success\n\
- -w, --warn warn about improperly formatted checksum lines\n\
+The following three options are useful only when verifying checksums:\n\
+ --quiet don't print OK for each successfully verified file\n\
+ --status don't output anything, status code shows success\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 (_("\
\n\
The sums are computed as described in %s. When checking, the input\n\
should be a former output of this program. The default mode is to print\n\
-a line with checksum, a character indicating type (`*' for binary, ` ' for\n\
-text), and name for each FILE.\n"),
- DIGEST_REFERENCE);
- printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+a line with checksum, a character indicating input mode ('*' for binary,\n\
+space for text), and name for each FILE.\n"),
+ DIGEST_REFERENCE);
+ emit_ancillary_info ();
}
exit (status);
#define ISWHITE(c) ((c) == ' ' || (c) == '\t')
+/* Given a file name, S of length S_LEN, that is not NUL-terminated,
+ modify it in place, performing the equivalent of this sed substitution:
+ 's/\\n/\n/g;s/\\\\/\\/g' i.e., replacing each "\\n" string with a newline
+ and each "\\\\" with a single backslash, NUL-terminate it and return S.
+ If S is not a valid escaped file name, i.e., if it ends with an odd number
+ of backslashes or if it contains a backslash followed by anything other
+ than "n" or another backslash, return NULL. */
+
+static char *
+filename_unescape (char *s, size_t s_len)
+{
+ char *dst = s;
+
+ for (size_t i = 0; i < s_len; i++)
+ {
+ switch (s[i])
+ {
+ case '\\':
+ if (i == s_len - 1)
+ {
+ /* File name ends with an unescaped backslash: invalid. */
+ return NULL;
+ }
+ ++i;
+ switch (s[i])
+ {
+ case 'n':
+ *dst++ = '\n';
+ break;
+ case '\\':
+ *dst++ = '\\';
+ break;
+ default:
+ /* Only '\' or 'n' may follow a backslash. */
+ return NULL;
+ }
+ break;
+
+ case '\0':
+ /* The file name may not contain a NUL. */
+ return NULL;
+
+ default:
+ *dst++ = s[i];
+ break;
+ }
+ }
+ if (dst < s + s_len)
+ *dst = '\0';
+
+ return s;
+}
+
/* Split the checksum string S (of length S_LEN) from a BSD 'md5' or
'sha1' command into two parts: a hexadecimal digest, and the file
name. S is modified. Return true if successful. */
static bool
-bsd_split_3 (char *s, size_t s_len, unsigned char **hex_digest, char **file_name)
+bsd_split_3 (char *s, size_t s_len, unsigned char **hex_digest,
+ char **file_name, bool escaped_filename)
{
size_t i;
- *file_name = s;
+ if (s_len == 0)
+ return false;
- /* Find end of filename. The BSD 'md5' and 'sha1' commands do not escape
- filenames, so search backwards for the last ')'. */
+ /* Find end of filename. */
i = s_len - 1;
while (i && s[i] != ')')
i--;
if (s[i] != ')')
return false;
+ *file_name = s;
+
+ if (escaped_filename && filename_unescape (s, i) == NULL)
+ return false;
+
s[i++] = '\0';
while (ISWHITE (s[i]))
static bool
split_3 (char *s, size_t s_len,
- unsigned char **hex_digest, int *binary, char **file_name)
+ unsigned char **hex_digest, int *binary, char **file_name)
{
- size_t i;
bool escaped_filename = false;
size_t algo_name_len;
- i = 0;
+ size_t i = 0;
while (ISWHITE (s[i]))
++i;
+ if (s[i] == '\\')
+ {
+ ++i;
+ escaped_filename = true;
+ }
+
/* Check for BSD-style checksum line. */
+
algo_name_len = strlen (DIGEST_TYPE_STRING);
- if (strncmp (s + i, DIGEST_TYPE_STRING, algo_name_len) == 0)
+ if (STREQ_LEN (s + i, DIGEST_TYPE_STRING, algo_name_len))
{
- if (strncmp (s + i + algo_name_len, " (", 2) == 0)
- {
- *binary = 0;
- return bsd_split_3 (s + i + algo_name_len + 2,
- s_len - (i + algo_name_len + 2),
- hex_digest, file_name);
- }
+ if (s[i + algo_name_len] == ' ')
+ ++i;
+ if (s[i + algo_name_len] == '(')
+ {
+ *binary = 0;
+ return bsd_split_3 (s + i + algo_name_len + 1,
+ s_len - (i + algo_name_len + 1),
+ hex_digest, file_name, escaped_filename);
+ }
}
/* Ignore this line if it is too short.
- Each line must have at least `min_digest_line_length - 1' (or one more, if
+ Each line must have at least 'min_digest_line_length - 1' (or one more, if
the first is a backslash) more characters to contain correct message digest
information. */
if (s_len - i < min_digest_line_length + (s[i] == '\\'))
return false;
- if (s[i] == '\\')
- {
- ++i;
- escaped_filename = true;
- }
*hex_digest = (unsigned char *) &s[i];
/* The first field has to be the n-character hexadecimal
s[i++] = '\0';
- if (s[i] != ' ' && s[i] != '*')
- return false;
- *binary = (s[i++] == '*');
+ /* If "bsd reversed" format detected. */
+ if ((s_len - i == 1) || (s[i] != ' ' && s[i] != '*'))
+ {
+ /* Don't allow mixing bsd and standard formats,
+ to minimize security issues with attackers
+ renaming files with leading spaces.
+ This assumes that with bsd format checksums
+ that the first file name does not have
+ a leading ' ' or '*'. */
+ if (bsd_reversed == 0)
+ return false;
+ bsd_reversed = 1;
+ }
+ else if (bsd_reversed != 1)
+ {
+ bsd_reversed = 0;
+ *binary = (s[i++] == '*');
+ }
/* All characters between the type indicator and end of line are
significant -- that includes leading and trailing white space. */
*file_name = &s[i];
if (escaped_filename)
- {
- /* Translate each `\n' string in the file name to a NEWLINE,
- and each `\\' string to a backslash. */
-
- char *dst = &s[i];
-
- while (i < s_len)
- {
- switch (s[i])
- {
- case '\\':
- if (i == s_len - 1)
- {
- /* A valid line does not end with a backslash. */
- return false;
- }
- ++i;
- switch (s[i++])
- {
- case 'n':
- *dst++ = '\n';
- break;
- case '\\':
- *dst++ = '\\';
- break;
- default:
- /* Only `\' or `n' may follow a backslash. */
- return false;
- }
- break;
-
- case '\0':
- /* The file name may not contain a NUL. */
- return false;
- break;
-
- default:
- *dst++ = s[i++];
- break;
- }
- }
- *dst = '\0';
- }
+ return filename_unescape (&s[i], s_len - i) != NULL;
+
return true;
}
-static bool
+/* Return true if S is a NUL-terminated string of DIGEST_HEX_BYTES hex digits.
+ Otherwise, return false. */
+static bool _GL_ATTRIBUTE_PURE
hex_digits (unsigned char const *s)
{
- while (*s)
+ unsigned int i;
+ for (i = 0; i < digest_hex_bytes; i++)
{
- if (!ISXDIGIT (*s))
+ if (!isxdigit (*s))
return false;
++s;
}
- return true;
+ return *s == '\0';
}
/* An interface to the function, DIGEST_STREAM.
have_read_stdin = true;
fp = stdin;
if (O_BINARY && *binary)
- {
- if (*binary < 0)
- *binary = ! isatty (STDIN_FILENO);
- if (*binary)
- freopen (NULL, "rb", stdin);
- }
+ {
+ if (*binary < 0)
+ *binary = ! isatty (STDIN_FILENO);
+ if (*binary)
+ xfreopen (NULL, "rb", stdin);
+ }
}
else
{
fp = fopen (filename, (O_BINARY && *binary ? "rb" : "r"));
if (fp == NULL)
- {
- error (0, errno, "%s", filename);
- return false;
- }
+ {
+ error (0, errno, "%s", filename);
+ return false;
+ }
}
+ fadvise (fp, FADVISE_SEQUENTIAL);
+
err = DIGEST_STREAM (fp, bin_result);
if (err)
{
error (0, errno, "%s", filename);
if (fp != stdin)
- fclose (fp);
+ fclose (fp);
return false;
}
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];
{
checkfile_stream = fopen (checkfile_name, "r");
if (checkfile_stream == NULL)
- {
- error (0, errno, "%s", checkfile_name);
- return false;
- }
+ {
+ error (0, errno, "%s", checkfile_name);
+ return false;
+ }
}
line_number = 0;
line_chars_allocated = 0;
do
{
- char *filename;
+ char *filename IF_LINT ( = NULL);
int binary;
- unsigned char *hex_digest IF_LINT (= NULL);
+ unsigned char *hex_digest IF_LINT ( = NULL);
ssize_t line_length;
++line_number;
if (line_number == 0)
- error (EXIT_FAILURE, 0, _("%s: too many checksum lines"),
- checkfile_name);
+ error (EXIT_FAILURE, 0, _("%s: too many checksum lines"),
+ checkfile_name);
line_length = getline (&line, &line_chars_allocated, checkfile_stream);
if (line_length <= 0)
- break;
+ break;
/* Ignore comment lines, which begin with a '#' character. */
if (line[0] == '#')
- continue;
+ continue;
/* Remove any trailing newline. */
if (line[line_length - 1] == '\n')
- line[--line_length] = '\0';
+ line[--line_length] = '\0';
if (! (split_3 (line, line_length, &hex_digest, &binary, &filename)
- && ! (is_stdin && STREQ (filename, "-"))
- && hex_digits (hex_digest)))
- {
- if (warn)
- {
- error (0, 0,
- _("%s: %" PRIuMAX
- ": improperly formatted %s checksum line"),
- checkfile_name, line_number,
- DIGEST_TYPE_STRING);
- }
- }
+ && ! (is_stdin && STREQ (filename, "-"))
+ && hex_digits (hex_digest)))
+ {
+ ++n_misformatted_lines;
+
+ if (warn)
+ {
+ error (0, 0,
+ _("%s: %" PRIuMAX
+ ": improperly formatted %s checksum line"),
+ checkfile_name, line_number,
+ DIGEST_TYPE_STRING);
+ }
+
+ ++n_improperly_formatted_lines;
+ }
else
- {
- static const char bin2hex[] = { '0', '1', '2', '3',
- '4', '5', '6', '7',
- '8', '9', 'a', 'b',
- 'c', 'd', 'e', 'f' };
- bool ok;
-
- ++n_properly_formatted_lines;
-
- ok = digest_file (filename, &binary, bin_buffer);
-
- if (!ok)
- {
- ++n_open_or_read_failures;
- if (!status_only)
- {
- printf (_("%s: FAILED open or read\n"), filename);
- fflush (stdout);
- }
- }
- else
- {
- size_t digest_bin_bytes = digest_hex_bytes / 2;
- size_t cnt;
- /* Compare generated binary number with text representation
- in check file. Ignore case of hex digits. */
- for (cnt = 0; cnt < digest_bin_bytes; ++cnt)
- {
- if (TOLOWER (hex_digest[2 * cnt])
- != bin2hex[bin_buffer[cnt] >> 4]
- || (TOLOWER (hex_digest[2 * cnt + 1])
- != (bin2hex[bin_buffer[cnt] & 0xf])))
- break;
- }
- if (cnt != digest_bin_bytes)
- ++n_mismatched_checksums;
-
- if (!status_only)
- {
- printf ("%s: %s\n", filename,
- (cnt != digest_bin_bytes ? _("FAILED") : _("OK")));
- fflush (stdout);
- }
- }
- }
+ {
+ static const char bin2hex[] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'a', 'b',
+ 'c', 'd', 'e', 'f' };
+ bool ok;
+
+ ++n_properly_formatted_lines;
+
+ ok = digest_file (filename, &binary, bin_buffer);
+
+ if (!ok)
+ {
+ ++n_open_or_read_failures;
+ if (!status_only)
+ {
+ printf (_("%s: FAILED open or read\n"), filename);
+ }
+ }
+ else
+ {
+ size_t digest_bin_bytes = digest_hex_bytes / 2;
+ size_t cnt;
+ /* Compare generated binary number with text representation
+ in check file. Ignore case of hex digits. */
+ for (cnt = 0; cnt < digest_bin_bytes; ++cnt)
+ {
+ if (tolower (hex_digest[2 * cnt])
+ != bin2hex[bin_buffer[cnt] >> 4]
+ || (tolower (hex_digest[2 * cnt + 1])
+ != (bin2hex[bin_buffer[cnt] & 0xf])))
+ break;
+ }
+ if (cnt != digest_bin_bytes)
+ ++n_mismatched_checksums;
+
+ if (!status_only)
+ {
+ if (cnt != digest_bin_bytes)
+ printf ("%s: %s\n", filename, _("FAILED"));
+ else if (!quiet)
+ printf ("%s: %s\n", filename, _("OK"));
+ }
+ }
+ }
}
while (!feof (checkfile_stream) && !ferror (checkfile_stream));
{
/* Warn if no tests are found. */
error (0, 0, _("%s: no properly formatted %s checksum lines found"),
- checkfile_name, DIGEST_TYPE_STRING);
+ checkfile_name, DIGEST_TYPE_STRING);
}
else
{
if (!status_only)
- {
- if (n_open_or_read_failures != 0)
- error (0, 0,
- ngettext ("WARNING: %" PRIuMAX " of %" PRIuMAX
- " listed file could not be read",
- "WARNING: %" PRIuMAX " of %" PRIuMAX
- " listed files could not be read",
- n_properly_formatted_lines),
- n_open_or_read_failures, n_properly_formatted_lines);
-
- if (n_mismatched_checksums != 0)
- {
- uintmax_t n_computed_checksums =
- (n_properly_formatted_lines - n_open_or_read_failures);
- error (0, 0,
- ngettext ("WARNING: %" PRIuMAX " of %" PRIuMAX
- " computed checksum did NOT match",
- "WARNING: %" PRIuMAX " of %" PRIuMAX
- " computed checksums did NOT match",
- n_computed_checksums),
- n_mismatched_checksums, n_computed_checksums);
- }
- }
+ {
+ if (n_misformatted_lines != 0)
+ error (0, 0,
+ (ngettext
+ ("WARNING: %" PRIuMAX " line is improperly formatted",
+ "WARNING: %" PRIuMAX " lines are improperly formatted",
+ select_plural (n_misformatted_lines))),
+ n_misformatted_lines);
+
+ if (n_open_or_read_failures != 0)
+ error (0, 0,
+ (ngettext
+ ("WARNING: %" PRIuMAX " listed file could not be read",
+ "WARNING: %" PRIuMAX " listed files could not be read",
+ select_plural (n_open_or_read_failures))),
+ n_open_or_read_failures);
+
+ if (n_mismatched_checksums != 0)
+ error (0, 0,
+ (ngettext
+ ("WARNING: %" PRIuMAX " computed checksum did NOT match",
+ "WARNING: %" PRIuMAX " computed checksums did NOT match",
+ select_plural (n_mismatched_checksums))),
+ n_mismatched_checksums);
+ }
}
return (n_properly_formatted_lines != 0
- && n_mismatched_checksums == 0
- && n_open_or_read_failures == 0);
+ && n_mismatched_checksums == 0
+ && n_open_or_read_failures == 0
+ && (!strict || n_improperly_formatted_lines == 0));
+}
+
+static void
+print_filename (char const *file)
+{
+ /* Translate each NEWLINE byte to the string, "\\n",
+ and each backslash to "\\\\". */
+ while (*file)
+ {
+ switch (*file)
+ {
+ case '\n':
+ fputs ("\\n", stdout);
+ break;
+
+ case '\\':
+ fputs ("\\\\", stdout);
+ break;
+
+ default:
+ putchar (*file);
+ break;
+ }
+ file++;
+ }
}
int
main (int argc, char **argv)
{
- unsigned char bin_buffer_unaligned[DIGEST_BIN_BYTES+DIGEST_ALIGN];
+ unsigned char bin_buffer_unaligned[DIGEST_BIN_BYTES + DIGEST_ALIGN];
/* Make sure bin_buffer is properly aligned. */
unsigned char *bin_buffer = ptr_align (bin_buffer_unaligned, DIGEST_ALIGN);
bool do_check = false;
int opt;
bool ok = true;
int binary = -1;
+ bool prefix_tag = false;
/* Setting values of global variables. */
initialize_main (&argc, &argv);
- program_name = argv[0];
+ set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
+ /* Line buffer stdout to ensure lines are written atomically and immediately
+ so that processes running in parallel do not intersperse their output. */
+ setvbuf (stdout, NULL, _IOLBF, 0);
+
while ((opt = getopt_long (argc, argv, "bctw", long_options, NULL)) != -1)
switch (opt)
{
case 'b':
- binary = 1;
- break;
+ binary = 1;
+ break;
case 'c':
- do_check = true;
- break;
+ do_check = true;
+ break;
case STATUS_OPTION:
- status_only = true;
- warn = false;
- break;
+ status_only = true;
+ warn = false;
+ quiet = false;
+ break;
case 't':
- binary = 0;
- break;
+ binary = 0;
+ break;
case 'w':
- status_only = false;
- warn = true;
- break;
+ status_only = false;
+ warn = true;
+ quiet = false;
+ break;
+ case QUIET_OPTION:
+ status_only = false;
+ warn = false;
+ quiet = true;
+ break;
+ case STRICT_OPTION:
+ strict = true;
+ break;
+ case TAG_OPTION:
+ prefix_tag = true;
+ binary = 1;
+ break;
case_GETOPT_HELP_CHAR;
case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
default:
- usage (EXIT_FAILURE);
+ usage (EXIT_FAILURE);
}
min_digest_line_length = MIN_DIGEST_LINE_LENGTH;
digest_hex_bytes = DIGEST_HEX_BYTES;
+ if (prefix_tag && !binary)
+ {
+ /* This could be supported in a backwards compatible way
+ by prefixing the output line with a space in text mode.
+ However that's invasive enough that it was agreed to
+ not support this mode with --tag, as --text use cases
+ are adequately supported by the default output format. */
+ error (0, 0, _("--tag does not support --text mode"));
+ usage (EXIT_FAILURE);
+ }
+
+ if (prefix_tag && do_check)
+ {
+ error (0, 0, _("the --tag option is meaningless when "
+ "verifying checksums"));
+ usage (EXIT_FAILURE);
+ }
+
if (0 <= binary && do_check)
{
error (0, 0, _("the --binary and --text options are meaningless when "
- "verifying checksums"));
+ "verifying checksums"));
usage (EXIT_FAILURE);
}
- if (status_only & !do_check)
+ if (status_only && !do_check)
{
error (0, 0,
_("the --status option is meaningful only when verifying checksums"));
usage (EXIT_FAILURE);
}
- if (warn & !do_check)
+ if (warn && !do_check)
{
error (0, 0,
_("the --warn option is meaningful only when verifying checksums"));
usage (EXIT_FAILURE);
}
+ if (quiet && !do_check)
+ {
+ error (0, 0,
+ _("the --quiet option is meaningful only when verifying checksums"));
+ 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;
if (optind == argc)
- argv[argc++] = "-";
+ argv[argc++] = bad_cast ("-");
for (; optind < argc; ++optind)
{
char *file = argv[optind];
if (do_check)
- ok &= digest_check (file);
+ ok &= digest_check (file);
else
- {
- int file_is_binary = binary;
-
- if (! digest_file (file, &file_is_binary, bin_buffer))
- ok = false;
- else
- {
- size_t i;
-
- /* Output a leading backslash if the file name contains
- a newline or backslash. */
- if (strchr (file, '\n') || strchr (file, '\\'))
- putchar ('\\');
-
- for (i = 0; i < (digest_hex_bytes / 2); ++i)
- printf ("%02x", bin_buffer[i]);
-
- putchar (' ');
- if (file_is_binary)
- putchar ('*');
- else
- putchar (' ');
-
- /* Translate each NEWLINE byte to the string, "\\n",
- and each backslash to "\\\\". */
- for (i = 0; i < strlen (file); ++i)
- {
- switch (file[i])
- {
- case '\n':
- fputs ("\\n", stdout);
- break;
-
- case '\\':
- fputs ("\\\\", stdout);
- break;
-
- default:
- putchar (file[i]);
- break;
- }
- }
- putchar ('\n');
- }
- }
+ {
+ int file_is_binary = binary;
+
+ if (! digest_file (file, &file_is_binary, bin_buffer))
+ ok = false;
+ else
+ {
+ if (prefix_tag)
+ {
+ if (strchr (file, '\n') || strchr (file, '\\'))
+ putchar ('\\');
+
+ fputs (DIGEST_TYPE_STRING, stdout);
+ fputs (" (", stdout);
+ print_filename (file);
+ fputs (") = ", stdout);
+ }
+
+ size_t i;
+
+ /* Output a leading backslash if the file name contains
+ a newline or backslash. */
+ if (!prefix_tag && (strchr (file, '\n') || strchr (file, '\\')))
+ putchar ('\\');
+
+ for (i = 0; i < (digest_hex_bytes / 2); ++i)
+ printf ("%02x", bin_buffer[i]);
+
+ if (!prefix_tag)
+ {
+ putchar (' ');
+
+ putchar (file_is_binary ? '*' : ' ');
+
+ print_filename (file);
+ }
+
+ putchar ('\n');
+ }
+ }
}
if (have_read_stdin && fclose (stdin) == EOF)
projects / platform / upstream / coreutils.git / blobdiff