-/* Compute MD5 or SHA1 checksum of files or strings
- Copyright (C) 1995-2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>. */
#include <config.h>
#include <getopt.h>
-#include <stdio.h>
#include <sys/types.h>
#include "system.h"
-#include "md5.h"
-#include "sha.h"
-#include "checksum.h"
-#include "getline.h"
-#include "closeout.h"
+#if HASH_ALGO_MD5
+# include "md5.h"
+#endif
+#if HASH_ALGO_SHA1
+# include "sha1.h"
+#endif
+#if HASH_ALGO_SHA256 || HASH_ALGO_SHA224
+# include "sha256.h"
+#endif
+#if HASH_ALGO_SHA512 || HASH_ALGO_SHA384
+# include "sha512.h"
+#endif
#include "error.h"
-
-/* The official name of this program (e.g., no `g' prefix). */
-#define PROGRAM_NAME (algorithm == ALG_MD5 ? "md5sum" : "shasum")
-
-#define AUTHORS N_ ("Ulrich Drepper and Scott Miller")
-
-/* Most systems do not distinguish between external and internal
- text representations. */
-/* FIXME: This begs for an autoconf test. */
-#if O_BINARY
-# define OPENOPTS(BINARY) ((BINARY) != 0 ? TEXT1TO1 : TEXTCNVT)
-# define TEXT1TO1 "rb"
-# define TEXTCNVT "r"
+#include "fadvise.h"
+#include "stdio--.h"
+#include "xfreopen.h"
+
+/* 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_BITS 128
+# define DIGEST_REFERENCE "RFC 1321"
+# define DIGEST_ALIGN 4
+#elif HASH_ALGO_SHA1
+# define PROGRAM_NAME "sha1sum"
+# define DIGEST_TYPE_STRING "SHA1"
+# define DIGEST_STREAM sha1_stream
+# define DIGEST_BITS 160
+# define DIGEST_REFERENCE "FIPS-180-1"
+# define DIGEST_ALIGN 4
+#elif HASH_ALGO_SHA256
+# define PROGRAM_NAME "sha256sum"
+# define DIGEST_TYPE_STRING "SHA256"
+# define DIGEST_STREAM sha256_stream
+# define DIGEST_BITS 256
+# define DIGEST_REFERENCE "FIPS-180-2"
+# define DIGEST_ALIGN 4
+#elif HASH_ALGO_SHA224
+# define PROGRAM_NAME "sha224sum"
+# define DIGEST_TYPE_STRING "SHA224"
+# define DIGEST_STREAM sha224_stream
+# define DIGEST_BITS 224
+# define DIGEST_REFERENCE "RFC 3874"
+# define DIGEST_ALIGN 4
+#elif HASH_ALGO_SHA512
+# define PROGRAM_NAME "sha512sum"
+# define DIGEST_TYPE_STRING "SHA512"
+# define DIGEST_STREAM sha512_stream
+# define DIGEST_BITS 512
+# define DIGEST_REFERENCE "FIPS-180-2"
+# define DIGEST_ALIGN 8
+#elif HASH_ALGO_SHA384
+# define PROGRAM_NAME "sha384sum"
+# define DIGEST_TYPE_STRING "SHA384"
+# define DIGEST_STREAM sha384_stream
+# define DIGEST_BITS 384
+# define DIGEST_REFERENCE "FIPS-180-2"
+# define DIGEST_ALIGN 8
#else
-# if defined VMS
-# define OPENOPTS(BINARY) ((BINARY) != 0 ? TEXT1TO1 : TEXTCNVT)
-# define TEXT1TO1 "rb", "ctx=stm"
-# define TEXTCNVT "r", "ctx=stm"
-# else
-# if UNIX || __UNIX__ || unix || __unix__ || _POSIX_VERSION
-# define OPENOPTS(BINARY) "r"
-# else
- /* The following line is intended to evoke an error.
- Using #error is not portable enough. */
- "Cannot determine system type."
-# endif
-# endif
+# error "Can't decide which hash algorithm to compile."
#endif
+#define DIGEST_HEX_BYTES (DIGEST_BITS / 4)
+#define DIGEST_BIN_BYTES (DIGEST_BITS / 8)
-#define DIGEST_TYPE_STRING(Alg) ((Alg) == ALG_MD5 ? "MD5" : "SHA1")
-#define DIGEST_STREAM(Alg) ((Alg) == ALG_MD5 ? md5_stream : sha_stream)
-
-#define DIGEST_BITS(Alg) ((Alg) == ALG_MD5 ? 128 : 160)
-#define DIGEST_HEX_BYTES(Alg) (DIGEST_BITS (Alg) / 4)
-#define DIGEST_BIN_BYTES(Alg) (DIGEST_BITS (Alg) / 8)
-
-#define MAX_DIGEST_BIN_BYTES MAX (DIGEST_BIN_BYTES (ALG_MD5), \
- DIGEST_BIN_BYTES (ALG_SHA1))
+#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(Alg) \
- (DIGEST_HEX_BYTES (Alg) /* length of hexadecimal message digest */ \
- + 2 /* blank and binary indicator */ \
+#define MIN_DIGEST_LINE_LENGTH \
+ (DIGEST_HEX_BYTES /* length of hexadecimal message digest */ \
+ + 1 /* blank */ \
+ 1 /* minimum filename length */ )
-/* Nonzero if any of the files read were the standard input. */
-static int have_read_stdin;
+/* True if any of the files read were the standard input. */
+static bool have_read_stdin;
/* The minimum length of a valid checksum line for the selected algorithm. */
-static int min_digest_line_length;
+static size_t min_digest_line_length;
/* Set to the length of a digest hex string for the selected algorithm. */
static size_t digest_hex_bytes;
/* With --check, don't generate any output.
The exit code indicates success or failure. */
-static int status_only = 0;
+static bool status_only = false;
/* With --check, print a message to standard error warning about each
improperly formatted checksum line. */
-static int warn = 0;
+static bool warn = false;
+
+/* With --check, suppress the "OK" printed for each verified file. */
+static bool quiet = false;
-/* Declared and set via one of the wrapper .c files. */
-/* int algorithm = ALG_UNSPECIFIED; */
+/* With --check, exit with a non-zero return code if any line is
+ improperly formatted. */
+static bool strict = false;
-/* The name this program was run with. */
-char *program_name;
+/* 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,
+ QUIET_OPTION,
+ STRICT_OPTION,
+ TAG_OPTION
+};
-static const struct option long_options[] =
+static struct option const long_options[] =
{
- { "binary", no_argument, 0, 'b' },
- { "check", no_argument, 0, 'c' },
- { "status", no_argument, 0, 2 },
- { "string", required_argument, 0, 1 },
- { "text", no_argument, 0, 't' },
- { "warn", no_argument, 0, 'w' },
+ { "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 }
void
usage (int status)
{
- if (status != 0)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
+ if (status != EXIT_SUCCESS)
+ emit_try_help ();
else
{
printf (_("\
-Usage: %s [OPTION] [FILE]...\n\
- or: %s [OPTION] --check [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, program_name,
- DIGEST_TYPE_STRING (algorithm),
- DIGEST_BITS (algorithm));
+ program_name,
+ DIGEST_TYPE_STRING,
+ DIGEST_BITS);
+ if (O_BINARY)
+ fputs (_("\
+ -b, --binary read in binary mode (default unless reading tty stdin)\n\
+"), stdout);
+ else
+ 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);
+ 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\
+"), stdout);
+ else
+ fputs (_("\
+ -t, --text read in text mode (default)\n\
+"), stdout);
+ fputs (_("\
\n\
- -b, --binary read files in binary mode (default on DOS/Windows)\n\
- -c, --check check %s sums against given list\n\
- -t, --text read files in text mode (default)\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\
-"),
- DIGEST_TYPE_STRING (algorithm));
+"), stdout);
fputs (_("\
-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 formated checksum lines\n\
-\n\
+ --strict with --check, exit non-zero for any invalid input\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
- fputs (_("\
-\n\
-"), 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"),
- (algorithm == ALG_MD5 ? "RFC 1321" : "FIPS-180-1"));
- puts (_("\nReport bugs to <bug-textutils@gnu.org>."));
+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 == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
+ exit (status);
}
-static int
-split_3 (char *s, size_t s_len, unsigned char **u, int *binary, char **w)
+#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, bool escaped_filename)
{
size_t i;
- int escaped_filename = 0;
-#define ISWHITE(c) ((c) == ' ' || (c) == '\t')
+ if (s_len == 0)
+ return false;
+
+ /* 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';
- i = 0;
while (ISWHITE (s[i]))
- ++i;
+ i++;
- /* The 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. Ignore this line if it is too short. */
- if (!(s_len - i >= min_digest_line_length
- || (s[i] == '\\' && s_len - i >= 1 + min_digest_line_length)))
- return 1;
+ if (s[i] != '=')
+ return false;
+
+ i++;
+
+ while (ISWHITE (s[i]))
+ i++;
+
+ *hex_digest = (unsigned char *) &s[i];
+ return true;
+}
+
+/* Split the string S (of length S_LEN) into three parts:
+ a hexadecimal digest, binary flag, and the file name.
+ S is modified. Return true if successful. */
+
+static bool
+split_3 (char *s, size_t s_len,
+ unsigned char **hex_digest, int *binary, char **file_name)
+{
+ bool escaped_filename = false;
+ size_t algo_name_len;
+
+ size_t i = 0;
+ while (ISWHITE (s[i]))
+ ++i;
if (s[i] == '\\')
{
++i;
- escaped_filename = 1;
+ escaped_filename = true;
}
- *u = (unsigned char *) &s[i];
+
+ /* Check for BSD-style checksum line. */
+
+ algo_name_len = strlen (DIGEST_TYPE_STRING);
+ if (STREQ_LEN (s + i, DIGEST_TYPE_STRING, algo_name_len))
+ {
+ 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
+ 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;
+
+ *hex_digest = (unsigned char *) &s[i];
/* The first field has to be the n-character hexadecimal
representation of the message digest. If it is not followed
immediately by a white space it's an error. */
i += digest_hex_bytes;
if (!ISWHITE (s[i]))
- return 1;
+ return false;
s[i++] = '\0';
- if (s[i] != ' ' && s[i] != '*')
- return 1;
- *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. */
- *w = &s[i];
+ *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 1;
- }
- ++i;
- switch (s[i++])
- {
- case 'n':
- *dst++ = '\n';
- break;
- case '\\':
- *dst++ = '\\';
- break;
- default:
- /* Only `\' or `n' may follow a backslash. */
- return 1;
- }
- break;
-
- case '\0':
- /* The file name may not contain a NUL. */
- return 1;
- break;
-
- default:
- *dst++ = s[i++];
- break;
- }
- }
- *dst = '\0';
- }
- return 0;
+ return filename_unescape (&s[i], s_len - i) != NULL;
+
+ return true;
}
-static int
+/* 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))
- return 0;
+ if (!isxdigit (*s))
+ return false;
++s;
}
- return 1;
+ return *s == '\0';
}
-/* An interface to the function, DIGEST_STREAM, (either md5_stream or sha_stream).
- Operate on FILENAME (it may be "-") and put the result in *BIN_RESULT.
- Return non-zero upon failure, zero to indicate success. */
+/* An interface to the function, DIGEST_STREAM.
+ Operate on FILENAME (it may be "-").
+
+ *BINARY indicates whether the file is binary. BINARY < 0 means it
+ depends on whether binary mode makes any difference and the file is
+ a terminal; in that case, clear *BINARY if the file was treated as
+ text because it was a terminal.
-static int
-digest_file (const char *filename, int binary, unsigned char *bin_result,
- int (*digest_stream)(FILE *, void *))
+ Put the checksum in *BIN_RESULT, which must be properly aligned.
+ Return true if successful. */
+
+static bool
+digest_file (const char *filename, int *binary, unsigned char *bin_result)
{
FILE *fp;
int err;
+ bool is_stdin = STREQ (filename, "-");
- if (STREQ (filename, "-"))
+ if (is_stdin)
{
- have_read_stdin = 1;
+ have_read_stdin = true;
fp = stdin;
-#if O_BINARY
- /* If we need binary reads from a pipe or redirected stdin, we need
- to switch it to BINARY mode here, since stdin is already open. */
- if (binary)
- SET_BINARY (fileno (stdin));
-#endif
+ if (O_BINARY && *binary)
+ {
+ if (*binary < 0)
+ *binary = ! isatty (STDIN_FILENO);
+ if (*binary)
+ xfreopen (NULL, "rb", stdin);
+ }
}
else
{
- /* OPENOPTS is a macro. It varies with the system.
- Some systems distinguish between internal and
- external text representations. */
-
- fp = fopen (filename, OPENOPTS (binary));
+ fp = fopen (filename, (O_BINARY && *binary ? "rb" : "r"));
if (fp == NULL)
- {
- error (0, errno, "%s", filename);
- return 1;
- }
+ {
+ error (0, errno, "%s", filename);
+ return false;
+ }
}
- err = (*digest_stream) (fp, bin_result);
+ fadvise (fp, FADVISE_SEQUENTIAL);
+
+ err = DIGEST_STREAM (fp, bin_result);
if (err)
{
error (0, errno, "%s", filename);
if (fp != stdin)
- fclose (fp);
- return 1;
+ fclose (fp);
+ return false;
}
- if (fp != stdin && fclose (fp) == EOF)
+ if (!is_stdin && fclose (fp) != 0)
{
error (0, errno, "%s", filename);
- return 1;
+ return false;
}
- return 0;
+ return true;
}
-static int
-digest_check (const char *checkfile_name, int (*digest_stream)(FILE *, void *))
+static bool
+digest_check (const char *checkfile_name)
{
FILE *checkfile_stream;
- int n_properly_formated_lines = 0;
- int n_mismatched_checksums = 0;
- int n_open_or_read_failures = 0;
- unsigned char bin_buffer[MAX_DIGEST_BIN_BYTES];
- size_t line_number;
+ 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];
+ /* Make sure bin_buffer is properly aligned. */
+ unsigned char *bin_buffer = ptr_align (bin_buffer_unaligned, DIGEST_ALIGN);
+ uintmax_t line_number;
char *line;
size_t line_chars_allocated;
+ bool is_stdin = STREQ (checkfile_name, "-");
- if (STREQ (checkfile_name, "-"))
+ if (is_stdin)
{
- have_read_stdin = 1;
+ have_read_stdin = true;
checkfile_name = _("standard input");
checkfile_stream = stdin;
}
{
checkfile_stream = fopen (checkfile_name, "r");
if (checkfile_stream == NULL)
- {
- error (0, errno, "%s", checkfile_name);
- return 1;
- }
+ {
+ error (0, errno, "%s", checkfile_name);
+ return false;
+ }
}
- SET_MODE (fileno (checkfile_stream), O_TEXT);
line_number = 0;
line = NULL;
line_chars_allocated = 0;
do
{
- char *filename;
+ char *filename IF_LINT ( = NULL);
int binary;
- unsigned char *hex_digest;
- int err;
- int line_length;
+ 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);
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';
-
- err = split_3 (line, line_length, &hex_digest, &binary, &filename);
- if (err || !hex_digits (hex_digest))
- {
- if (warn)
- {
- error (0, 0,
- _("%s: %lu: improperly formatted %s checksum line"),
- checkfile_name, (unsigned long) line_number,
- DIGEST_TYPE_STRING (algorithm));
- }
- }
+ line[--line_length] = '\0';
+
+ if (! (split_3 (line, line_length, &hex_digest, &binary, &filename)
+ && ! (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' };
- int fail;
-
- ++n_properly_formated_lines;
-
- fail = digest_file (filename, binary, bin_buffer, digest_stream);
-
- if (fail)
- {
- ++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));
- if (line)
- free (line);
+ free (line);
if (ferror (checkfile_stream))
{
error (0, 0, _("%s: read error"), checkfile_name);
- return 1;
+ return false;
}
- if (checkfile_stream != stdin && fclose (checkfile_stream) == EOF)
+ if (!is_stdin && fclose (checkfile_stream) != 0)
{
error (0, errno, "%s", checkfile_name);
- return 1;
+ return false;
}
- if (n_properly_formated_lines == 0)
+ if (n_properly_formatted_lines == 0)
{
/* Warn if no tests are found. */
error (0, 0, _("%s: no properly formatted %s checksum lines found"),
- checkfile_name, DIGEST_TYPE_STRING (algorithm));
+ checkfile_name, DIGEST_TYPE_STRING);
}
else
{
if (!status_only)
- {
- int n_computed_checkums = (n_properly_formated_lines
- - n_open_or_read_failures);
-
- if (n_open_or_read_failures > 0)
- {
- error (0, 0,
- _("WARNING: %d of %d listed %s could not be read"),
- n_open_or_read_failures, n_properly_formated_lines,
- (n_properly_formated_lines == 1
- ? _("file") : _("files")));
- }
-
- if (n_mismatched_checksums > 0)
- {
- error (0, 0,
- _("WARNING: %d of %d computed %s did NOT match"),
- n_mismatched_checksums, n_computed_checkums,
- (n_computed_checkums == 1
- ? _("checksum") : _("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_formated_lines > 0 && n_mismatched_checksums == 0
- && n_open_or_read_failures == 0) ? 0 : 1);
+ return (n_properly_formatted_lines != 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[MAX_DIGEST_BIN_BYTES];
- int do_check = 0;
+ 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;
- char **string = NULL;
- size_t n_strings = 0;
- size_t err = 0;
- int file_type_specified = 0;
-
-#if O_BINARY
- /* Binary is default on MSDOS, so the actual file contents
- are used in computation. */
- int binary = 1;
-#else
- /* Text is default of the Plumb/Lankester format. */
- int binary = 0;
-#endif
+ bool ok = true;
+ int binary = -1;
+ bool prefix_tag = false;
/* Setting values of global variables. */
- program_name = argv[0];
+ initialize_main (&argc, &argv);
+ 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 0: /* long option */
- break;
- case 1: /* --string */
- {
- if (string == NULL)
- string = (char **) xmalloc ((argc - 1) * sizeof (char *));
-
- if (optarg == NULL)
- optarg = "";
- string[n_strings++] = optarg;
- }
- break;
case 'b':
- file_type_specified = 1;
- binary = 1;
- break;
+ binary = 1;
+ break;
case 'c':
- do_check = 1;
- break;
- case 2:
- status_only = 1;
- warn = 0;
- break;
+ do_check = true;
+ break;
+ case STATUS_OPTION:
+ status_only = true;
+ warn = false;
+ quiet = false;
+ break;
case 't':
- file_type_specified = 1;
- binary = 0;
- break;
+ binary = 0;
+ break;
case 'w':
- status_only = 0;
- warn = 1;
- 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 (algorithm);
- digest_hex_bytes = DIGEST_HEX_BYTES (algorithm);
-
- if (file_type_specified && do_check)
+ 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 --binary and --text options are meaningless when \
-verifying checksums"));
+ error (0, 0, _("the --tag option is meaningless when "
+ "verifying checksums"));
usage (EXIT_FAILURE);
}
- if (n_strings > 0 && do_check)
+ if (0 <= binary && do_check)
{
- error (0, 0,
- _("the --string and --check options are mutually exclusive"));
+ error (0, 0, _("the --binary and --text options are meaningless when "
+ "verifying checksums"));
usage (EXIT_FAILURE);
}
usage (EXIT_FAILURE);
}
- if (n_strings > 0)
- {
- size_t i;
-
- if (optind < argc)
- {
- error (0, 0, _("no files may be specified when using --string"));
- usage (EXIT_FAILURE);
- }
- for (i = 0; i < n_strings; ++i)
- {
- size_t cnt;
- if (algorithm == ALG_MD5)
- md5_buffer (string[i], strlen (string[i]), bin_buffer);
- else
- sha_buffer (string[i], strlen (string[i]), bin_buffer);
-
- for (cnt = 0; cnt < (digest_hex_bytes / 2); ++cnt)
- printf ("%02x", bin_buffer[cnt]);
-
- printf (" \"%s\"\n", string[i]);
- }
- }
- else if (do_check)
+ if (quiet && !do_check)
{
- if (optind + 1 < argc)
- {
- error (0, 0,
- _("only one argument may be specified when using --check"));
- usage (EXIT_FAILURE);
- }
-
- err = digest_check ((optind == argc) ? "-" : argv[optind],
- DIGEST_STREAM (algorithm));
+ error (0, 0,
+ _("the --quiet option is meaningful only when verifying checksums"));
+ usage (EXIT_FAILURE);
}
- else
+
+ 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++] = bad_cast ("-");
+
+ for (; optind < argc; ++optind)
{
- if (optind == argc)
- argv[argc++] = "-";
-
- for (; optind < argc; ++optind)
- {
- int fail;
- char *file = argv[optind];
-
- fail = digest_file (file, binary, bin_buffer,
- DIGEST_STREAM (algorithm));
- err |= fail;
- if (!fail)
- {
- 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 (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');
- }
- }
+ char *file = argv[optind];
+
+ if (do_check)
+ ok &= digest_check (file);
+ else
+ {
+ 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)
error (EXIT_FAILURE, errno, _("standard input"));
- exit (err == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
+ exit (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
projects / platform / upstream / coreutils.git / blobdiff