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993d416d02
The output of md5sum/sha1sum contains a character to indicate
what mode was used to read the file - '*' for binary, and ' '
for text or where binary is insignificant.
This flag character makes a difference for the ffmpeg testsuite.
This testsuite contains a number of reference files (e.g. [1]),
containing the expected md5sum output for those files, which is
checked verbatim.
By making busybox's md5sum honor this flag in the output,
ffmpeg's testsuite can run successfully on top of busybox.
The flag is only partially implemented; in coreutils md5sum,
a later "-t" option overrides an earlier "-b" option. Here,
just check if a "-b" option was specified or not. Neither
flag affects how the files actually are read.
[1] 894da5ca7d/tests/ref/acodec/flac
Signed-off-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
391 lines
12 KiB
C
391 lines
12 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2003 Glenn L. McGrath
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* Copyright (C) 2003-2004 Erik Andersen
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config MD5SUM
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//config: bool "md5sum (6.7 kb)"
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//config: default y
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//config: help
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//config: Compute and check MD5 message digest
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//config:
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//config:config SHA1SUM
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//config: bool "sha1sum (6.7 kb)"
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//config: default y
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//config: help
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//config: Compute and check SHA1 message digest
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//config:
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//config:config SHA256SUM
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//config: bool "sha256sum (8.2 kb)"
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//config: default y
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//config: help
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//config: Compute and check SHA256 message digest
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//config:
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//config:config SHA384SUM
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//config: bool "sha384sum (7.3 kb)"
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//config: default y
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//config: help
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//config: Compute and check SHA384 message digest
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//config:
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//config:config SHA512SUM
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//config: bool "sha512sum (7.3 kb)"
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//config: default y
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//config: help
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//config: Compute and check SHA512 message digest
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//config:
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//config:config SHA3SUM
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//config: bool "sha3sum (6.3 kb)"
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//config: default y
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//config: help
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//config: Compute and check SHA3 message digest
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//config:
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//config:comment "Common options for md5sum, sha1sum, sha256sum, ..., sha3sum"
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//config: depends on MD5SUM || SHA1SUM || SHA256SUM || SHA384SUM || SHA512SUM || SHA3SUM
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//config:
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//config:config FEATURE_MD5_SHA1_SUM_CHECK
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//config: bool "Enable -c, -s and -w options"
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//config: default y
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//config: depends on MD5SUM || SHA1SUM || SHA256SUM || SHA384SUM || SHA512SUM || SHA3SUM
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//config: help
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//config: Enabling the -c options allows files to be checked
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//config: against pre-calculated hash values.
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//config: -s and -w are useful options when verifying checksums.
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//applet:IF_MD5SUM(APPLET_NOEXEC(md5sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, md5sum))
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//applet:IF_SHA1SUM(APPLET_NOEXEC(sha1sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha1sum))
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//applet:IF_SHA3SUM(APPLET_NOEXEC(sha3sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha3sum))
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//applet:IF_SHA256SUM(APPLET_NOEXEC(sha256sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha256sum))
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//applet:IF_SHA384SUM(APPLET_NOEXEC(sha384sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha384sum))
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//applet:IF_SHA512SUM(APPLET_NOEXEC(sha512sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha512sum))
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//kbuild:lib-$(CONFIG_MD5SUM) += md5_sha1_sum.o
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//kbuild:lib-$(CONFIG_SHA1SUM) += md5_sha1_sum.o
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//kbuild:lib-$(CONFIG_SHA256SUM) += md5_sha1_sum.o
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//kbuild:lib-$(CONFIG_SHA384SUM) += md5_sha1_sum.o
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//kbuild:lib-$(CONFIG_SHA512SUM) += md5_sha1_sum.o
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//kbuild:lib-$(CONFIG_SHA3SUM) += md5_sha1_sum.o
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//usage:#define md5sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
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//usage:#define md5sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " MD5 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage:
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//usage:#define md5sum_example_usage
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//usage: "$ md5sum < busybox\n"
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//usage: "6fd11e98b98a58f64ff3398d7b324003\n"
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//usage: "$ md5sum busybox\n"
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//usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n"
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//usage: "$ md5sum -c -\n"
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//usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n"
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//usage: "busybox: OK\n"
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//usage: "^D\n"
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//usage:
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//usage:#define sha1sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
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//usage:#define sha1sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage:
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//usage:#define sha256sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
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//usage:#define sha256sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA256 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage:
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//usage:#define sha384sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
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//usage:#define sha384sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA384 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage:
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//usage:#define sha512sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
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//usage:#define sha512sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA512 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage:
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//usage:#define sha3sum_trivial_usage
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[-a BITS] [FILE]..."
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//usage:#define sha3sum_full_usage "\n\n"
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//usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA3 checksums"
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//usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
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//usage: "\n -c Check sums against list in FILEs"
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//usage: "\n -s Don't output anything, status code shows success"
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//usage: "\n -w Warn about improperly formatted checksum lines"
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//usage: )
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//usage: "\n -a BITS 224 (default), 256, 384, 512"
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//FIXME: GNU coreutils 8.25 has no -s option, it has only these two long opts:
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// --quiet don't print OK for each successfully verified file
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// --status don't output anything, status code shows success
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#include "libbb.h"
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/* This is a NOEXEC applet. Be very careful! */
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enum {
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/* 4th letter of applet_name is... */
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HASH_MD5 = 's', /* "md5>s<um" */
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HASH_SHA1 = '1',
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HASH_SHA256 = '2',
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HASH_SHA3 = '3',
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HASH_SHA512 = '5',
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/* unfortunately, sha384sum has the same '3' as sha3 */
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};
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#define FLAG_SILENT 1
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#define FLAG_CHECK 2
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#define FLAG_WARN 4
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#define FLAG_BINARY 8
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/* This might be useful elsewhere */
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static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
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unsigned hash_length)
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{
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/* xzalloc zero-terminates */
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char *hex_value = xzalloc((hash_length * 2) + 1);
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bin2hex(hex_value, (char*)hash_value, hash_length);
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return (unsigned char *)hex_value;
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}
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#define BUFSZ (CONFIG_FEATURE_COPYBUF_KB < 4 ? 4096 : CONFIG_FEATURE_COPYBUF_KB * 1024)
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#if !ENABLE_SHA3SUM
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# define hash_file(b,f,w) hash_file(b,f)
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#endif
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static uint8_t *hash_file(unsigned char *in_buf, const char *filename, unsigned sha3_width)
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{
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int src_fd, count;
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union _ctx_ {
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sha3_ctx_t sha3;
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sha512_ctx_t sha512;
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sha384_ctx_t sha384;
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sha256_ctx_t sha256;
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sha1_ctx_t sha1;
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md5_ctx_t md5;
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} context;
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uint8_t *hash_value;
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void FAST_FUNC (*update)(void*, const void*, size_t);
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unsigned FAST_FUNC (*final)(void*, void*);
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char hash_algo;
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src_fd = open_or_warn_stdin(filename);
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if (src_fd < 0) {
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return NULL;
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}
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hash_algo = applet_name[3];
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/* figure specific hash algorithms */
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if (ENABLE_MD5SUM && hash_algo == HASH_MD5) {
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md5_begin(&context.md5);
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update = (void*)md5_hash;
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final = (void*)md5_end;
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}
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else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) {
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sha1_begin(&context.sha1);
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update = (void*)sha1_hash;
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final = (void*)sha1_end;
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}
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else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) {
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sha256_begin(&context.sha256);
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update = (void*)sha256_hash;
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final = (void*)sha256_end;
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}
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else if (ENABLE_SHA384SUM
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&& (ENABLE_SHA3SUM
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? (applet_name[4] == '8') /* check for "sha384", but do not match "sha3" */
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: (hash_algo == '3') /* applet_name = "sha3sum" is not possible */
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)
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) {
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sha384_begin(&context.sha384);
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update = (void*)sha384_hash;
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final = (void*)sha384_end;
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}
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else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) {
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sha512_begin(&context.sha512);
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update = (void*)sha512_hash;
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final = (void*)sha512_end;
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}
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#if ENABLE_SHA3SUM
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else if (ENABLE_SHA3SUM && hash_algo == HASH_SHA3) {
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sha3_begin(&context.sha3);
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update = (void*)sha3_hash;
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final = (void*)sha3_end;
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/*
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* Should support 224, 256, 384, 512.
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* We allow any value which does not blow the algorithm up.
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*/
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if (sha3_width >= 1600/2 /* input block can't be <= 0 */
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|| sha3_width == 0 /* hash len can't be 0 */
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|| (sha3_width & 0x1f) /* should be multiple of 32 */
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/* (because input uses up to 8 byte wide word XORs. 32/4=8) */
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) {
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bb_error_msg_and_die("bad -a%u", sha3_width);
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}
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context.sha3.input_block_bytes = 1600/8 - sha3_width/4;
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}
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#endif
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else {
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xfunc_die(); /* can't reach this */
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}
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{
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while ((count = safe_read(src_fd, in_buf, BUFSZ)) > 0) {
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update(&context, in_buf, count);
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}
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hash_value = NULL;
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if (count < 0)
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bb_perror_msg("can't read '%s'", filename);
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else /* count == 0 */ {
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unsigned hash_len = final(&context, in_buf);
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hash_value = hash_bin_to_hex(in_buf, hash_len);
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}
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}
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if (src_fd != STDIN_FILENO) {
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close(src_fd);
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}
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return hash_value;
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}
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int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
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{
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unsigned char *in_buf;
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int return_value = EXIT_SUCCESS;
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unsigned flags;
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#if ENABLE_SHA3SUM
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unsigned sha3_width = 224;
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#endif
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const char *fmt = "%s %s\n";
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if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) {
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/* -t per se is a no-op (it means "text mode").
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* -b sets the '*' binary mode indicator in the output.
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* -t unsets -b (-bt is the same as -t, which is the same as no option) */
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/* -s and -w require -c */
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#if ENABLE_SHA3SUM
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if (applet_name[3] == HASH_SHA3 && (!ENABLE_SHA384SUM || applet_name[4] != '8'))
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flags = getopt32(argv, "^" "scwbta:+" "\0" "t-b:s?c:w?c", &sha3_width);
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else
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#endif
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flags = getopt32(argv, "^" "scwbt" "\0" "t-b:s?c:w?c");
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if (flags & FLAG_BINARY)
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fmt = "%s *%s\n";
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} else {
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#if ENABLE_SHA3SUM
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if (applet_name[3] == HASH_SHA3 && (!ENABLE_SHA384SUM || applet_name[4] != '8'))
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getopt32(argv, "a:+", &sha3_width);
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else
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#endif
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getopt32(argv, "");
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}
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argv += optind;
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//argc -= optind;
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if (!*argv)
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*--argv = (char*)"-";
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/* The buffer is not alloc/freed for each input file:
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* for big values of COPYBUF_KB, this helps to keep its pages
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* pre-faulted and possibly even fully cached on local CPU.
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*/
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in_buf = xmalloc(BUFSZ);
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do {
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if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {
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FILE *pre_computed_stream;
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char *line;
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int count_total = 0;
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int count_failed = 0;
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pre_computed_stream = xfopen_stdin(*argv);
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while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) {
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uint8_t *hash_value;
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char *filename_ptr;
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count_total++;
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filename_ptr = strchr(line, ' ');
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if (!filename_ptr) {
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if (flags & FLAG_WARN) {
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bb_simple_error_msg("invalid format");
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}
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count_failed++;
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return_value = EXIT_FAILURE;
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free(line);
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continue;
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}
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*filename_ptr++ = '\0';
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/* coreutils 9.1 allows "HASH FILENAME" format,
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* with only one space. Skip the 'correct'
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* " " or " *" delimiter if it is there:
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*/
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if (*filename_ptr == ' ' || *filename_ptr == '*')
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filename_ptr++;
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hash_value = hash_file(in_buf, filename_ptr, sha3_width);
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if (hash_value && (strcasecmp((char*)hash_value, line) == 0)) {
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if (!(flags & FLAG_SILENT))
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printf("%s: OK\n", filename_ptr);
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} else {
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if (!(flags & FLAG_SILENT))
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printf("%s: FAILED\n", filename_ptr);
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count_failed++;
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return_value = EXIT_FAILURE;
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}
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/* possible free(NULL) */
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free(hash_value);
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free(line);
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}
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if (count_failed && !(flags & FLAG_SILENT)) {
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bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
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count_failed, count_total);
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}
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if (count_total == 0) {
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return_value = EXIT_FAILURE;
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/*
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* md5sum from GNU coreutils 8.25 says:
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* md5sum: <FILE>: no properly formatted MD5 checksum lines found
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*/
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bb_error_msg("%s: no checksum lines found", *argv);
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}
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fclose_if_not_stdin(pre_computed_stream);
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} else {
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uint8_t *hash_value = hash_file(in_buf, *argv, sha3_width);
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if (hash_value == NULL) {
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return_value = EXIT_FAILURE;
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} else {
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printf(fmt, hash_value, *argv);
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free(hash_value);
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}
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}
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} while (*++argv);
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return return_value;
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}
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