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cmd/md5sum.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2011 * Joe Hershberger, National Instruments, joe.hershberger@ni.com * |
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* (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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*/ #include <common.h> #include <command.h> |
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#include <env.h> |
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#include <mapmem.h> |
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#include <u-boot/md5.h> |
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#include <asm/io.h> |
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/* * Store the resulting sum to an address or variable */ static void store_result(const u8 *sum, const char *dest) { unsigned int i; if (*dest == '*') { u8 *ptr; ptr = (u8 *)simple_strtoul(dest + 1, NULL, 16); for (i = 0; i < 16; i++) *ptr++ = sum[i]; } else { char str_output[33]; char *str_ptr = str_output; for (i = 0; i < 16; i++) { sprintf(str_ptr, "%02x", sum[i]); str_ptr += 2; } |
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env_set(dest, str_output); |
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} } |
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#ifdef CONFIG_MD5SUM_VERIFY static int parse_verify_sum(char *verify_str, u8 *vsum) { if (*verify_str == '*') { u8 *ptr; ptr = (u8 *)simple_strtoul(verify_str + 1, NULL, 16); memcpy(vsum, ptr, 16); } else { unsigned int i; char *vsum_str; if (strlen(verify_str) == 32) vsum_str = verify_str; else { |
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vsum_str = env_get(verify_str); |
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if (vsum_str == NULL || strlen(vsum_str) != 32) return 1; } for (i = 0; i < 16; i++) { char *nullp = vsum_str + (i + 1) * 2; char end = *nullp; *nullp = '\0'; *(u8 *)(vsum + i) = simple_strtoul(vsum_str + (i * 2), NULL, 16); *nullp = end; } } return 0; } int do_md5sum(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { ulong addr, len; unsigned int i; u8 output[16]; u8 vsum[16]; int verify = 0; int ac; char * const *av; |
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void *buf; |
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if (argc < 3) return CMD_RET_USAGE; av = argv + 1; ac = argc - 1; if (strcmp(*av, "-v") == 0) { verify = 1; av++; ac--; if (ac < 3) return CMD_RET_USAGE; } addr = simple_strtoul(*av++, NULL, 16); len = simple_strtoul(*av++, NULL, 16); |
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buf = map_sysmem(addr, len); md5_wd(buf, len, output, CHUNKSZ_MD5); unmap_sysmem(buf); |
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if (!verify) { printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1); for (i = 0; i < 16; i++) printf("%02x", output[i]); printf(" "); |
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if (ac > 2) store_result(output, *av); |
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} else { char *verify_str = *av++; if (parse_verify_sum(verify_str, vsum)) { printf("ERROR: %s does not contain a valid md5 sum ", verify_str); return 1; } if (memcmp(output, vsum, 16) != 0) { printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1); for (i = 0; i < 16; i++) printf("%02x", output[i]); printf(" != "); for (i = 0; i < 16; i++) printf("%02x", vsum[i]); printf(" ** ERROR ** "); return 1; } } return 0; } #else |
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static int do_md5sum(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { unsigned long addr, len; unsigned int i; u8 output[16]; |
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void *buf; |
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if (argc < 3) |
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return CMD_RET_USAGE; |
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addr = simple_strtoul(argv[1], NULL, 16); len = simple_strtoul(argv[2], NULL, 16); |
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buf = map_sysmem(addr, len); md5_wd(buf, len, output, CHUNKSZ_MD5); unmap_sysmem(buf); |
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printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1); for (i = 0; i < 16; i++) printf("%02x", output[i]); printf(" "); |
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if (argc > 3) store_result(output, argv[3]); |
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return 0; } |
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#endif |
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#ifdef CONFIG_MD5SUM_VERIFY U_BOOT_CMD( md5sum, 5, 1, do_md5sum, "compute MD5 message digest", |
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"address count [[*]sum] " " - compute MD5 message digest [save to sum] " |
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"md5sum -v address count [*]sum " " - verify md5sum of memory area" ); #else |
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U_BOOT_CMD( |
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md5sum, 4, 1, do_md5sum, |
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"compute MD5 message digest", |
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"address count [[*]sum] " " - compute MD5 message digest [save to sum]" |
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); |
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#endif |