161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
/*
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* digest.c - Calculate a md5/sha1/sha256 checksum of a memory area
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*
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* Copyright (c) 2011 Peter Korsgaard <jacmet@sunsite.dk>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <xfuncs.h>
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#include <malloc.h>
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#include <digest.h>
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static int do_digest(char *algorithm, int argc, char *argv[])
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{
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struct digest *d;
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int ret = 0;
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int i;
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unsigned char *hash;
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d = digest_get_by_name(algorithm);
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BUG_ON(!d);
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if (argc < 2)
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return COMMAND_ERROR_USAGE;
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hash = calloc(d->length, sizeof(unsigned char));
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if (!hash) {
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perror("calloc");
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return COMMAND_ERROR_USAGE;
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}
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argv++;
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while (*argv) {
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char *filename = "/dev/mem";
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loff_t start = 0, size = ~0;
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/* arguments are either file, file+area or area */
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if (parse_area_spec(*argv, &start, &size)) {
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filename = *argv;
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if (argv[1] && !parse_area_spec(argv[1], &start, &size))
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argv++;
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}
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if (digest_file_window(d, filename, hash, start, size) < 0) {
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ret = 1;
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} else {
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for (i = 0; i < d->length; i++)
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printf("%02x", hash[i]);
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printf(" %s\t0x%08llx ... 0x%08llx\n",
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filename, start, start + size);
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}
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argv++;
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}
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free(hash);
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return ret;
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}
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#ifdef CONFIG_CMD_MD5SUM
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static int do_md5(int argc, char *argv[])
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{
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return do_digest("md5", argc, argv);
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}
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BAREBOX_CMD_HELP_START(md5sum)
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BAREBOX_CMD_HELP_TEXT("Calculate a MD5 digest over a FILE or a memory area.")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(md5sum)
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.cmd = do_md5,
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BAREBOX_CMD_DESC("calculate MD5 checksum")
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BAREBOX_CMD_OPTS("FILE|AREA...")
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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BAREBOX_CMD_HELP(cmd_md5sum_help)
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BAREBOX_CMD_END
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#endif /* CMD_CMD_MD5SUM */
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#ifdef CONFIG_CMD_SHA1SUM
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static int do_sha1(int argc, char *argv[])
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{
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return do_digest("sha1", argc, argv);
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}
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BAREBOX_CMD_HELP_START(sha1sum)
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BAREBOX_CMD_HELP_TEXT("Calculate a SHA1 digest over a FILE or a memory area.")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(sha1sum)
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.cmd = do_sha1,
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BAREBOX_CMD_DESC("calculate SHA1 digest")
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BAREBOX_CMD_OPTS("FILE|AREA")
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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BAREBOX_CMD_HELP(cmd_sha1sum_help)
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BAREBOX_CMD_END
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#endif /* CMD_CMD_SHA1SUM */
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#ifdef CONFIG_CMD_SHA224SUM
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static int do_sha224(int argc, char *argv[])
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{
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return do_digest("sha224", argc, argv);
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}
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BAREBOX_CMD_HELP_START(sha224sum)
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BAREBOX_CMD_HELP_TEXT("Calculate a SHA224 digest over a FILE or a memory area.")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(sha224sum)
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.cmd = do_sha224,
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BAREBOX_CMD_DESC("calculate SHA224 digest")
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BAREBOX_CMD_OPTS("FILE|AREA")
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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BAREBOX_CMD_HELP(cmd_sha224sum_help)
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BAREBOX_CMD_END
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#endif /* CMD_CMD_SHA224SUM */
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#ifdef CONFIG_CMD_SHA256SUM
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static int do_sha256(int argc, char *argv[])
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{
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return do_digest("sha256", argc, argv);
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}
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BAREBOX_CMD_HELP_START(sha256sum)
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BAREBOX_CMD_HELP_TEXT("Calculate a SHA256 digest over a FILE or a memory area.")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(sha256sum)
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.cmd = do_sha256,
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BAREBOX_CMD_DESC("calculate SHA256 digest")
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BAREBOX_CMD_OPTS("FILE|AREA")
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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BAREBOX_CMD_HELP(cmd_sha256sum_help)
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BAREBOX_CMD_END
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#endif /* CMD_CMD_SHA256SUM */
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