u-boot/cmd/md5sum.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

182 lines
3.6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2011
* Joe Hershberger, National Instruments, joe.hershberger@ni.com
*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <command.h>
#include <mapmem.h>
#include <u-boot/md5.h>
#include <asm/io.h>
/*
* 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;
}
env_set(dest, str_output);
}
}
#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 {
vsum_str = env_get(verify_str);
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;
void *buf;
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);
buf = map_sysmem(addr, len);
md5_wd(buf, len, output, CHUNKSZ_MD5);
unmap_sysmem(buf);
if (!verify) {
printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1);
for (i = 0; i < 16; i++)
printf("%02x", output[i]);
printf("\n");
if (ac > 2)
store_result(output, *av);
} else {
char *verify_str = *av++;
if (parse_verify_sum(verify_str, vsum)) {
printf("ERROR: %s does not contain a valid md5 sum\n",
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 **\n");
return 1;
}
}
return 0;
}
#else
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];
void *buf;
if (argc < 3)
return CMD_RET_USAGE;
addr = simple_strtoul(argv[1], NULL, 16);
len = simple_strtoul(argv[2], NULL, 16);
buf = map_sysmem(addr, len);
md5_wd(buf, len, output, CHUNKSZ_MD5);
unmap_sysmem(buf);
printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1);
for (i = 0; i < 16; i++)
printf("%02x", output[i]);
printf("\n");
if (argc > 3)
store_result(output, argv[3]);
return 0;
}
#endif
#ifdef CONFIG_MD5SUM_VERIFY
U_BOOT_CMD(
md5sum, 5, 1, do_md5sum,
"compute MD5 message digest",
"address count [[*]sum]\n"
" - compute MD5 message digest [save to sum]\n"
"md5sum -v address count [*]sum\n"
" - verify md5sum of memory area"
);
#else
U_BOOT_CMD(
md5sum, 4, 1, do_md5sum,
"compute MD5 message digest",
"address count [[*]sum]\n"
" - compute MD5 message digest [save to sum]"
);
#endif