Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

tools: env: parse aes key / suppress flag into argument struct

Browse Source 
disabled original parsing, but not yet removed since the
argument indexing needs to be fixed

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
master
Andreas Fenkart 9 years ago committed by Tom Rini
parent 07ce944021
commit 371ee13760
3 changed files with 53 additions and 57 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 64
      tools/env/fw_env.c
  2. 15
      tools/env/fw_env.h
  3. 31
      tools/env/fw_env_main.c

64
tools/env/fw_env.c vendored
Unescape View File

@ -34,8 +34,6 @@
#include "fw_env.h"
#include <aes.h>
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#define WHITESPACE(c) ((c == '\t') || (c == ' '))
@ -105,9 +103,6 @@ static struct environment environment = {
.flag_scheme = FLAG_NONE,
};
/* Is AES encryption used? */
static int aes_flag;
static uint8_t aes_key[AES_KEY_LENGTH] = { 0 };
static int env_aes_cbc_crypt(char *data, const int enc);
static int HaveRedundEnv = 0;
@ -125,7 +120,6 @@ static int parse_config (void);
#if defined(CONFIG_FILE)
static int get_config (char *);
static char *config_file = CONFIG_FILE;
#endif
static inline ulong getenvsize (void)
{
@ -134,7 +128,7 @@ static inline ulong getenvsize (void)
if (HaveRedundEnv)
rc -= sizeof (char);
if (aes_flag)
if (common_args.aes_flag)
rc &= ~(AES_KEY_LENGTH - 1);
return rc;
@ -208,7 +202,7 @@ char *fw_getdefenv(char *name)
return NULL;
}
static int parse_aes_key(char *key, uint8_t *bin_key)
int parse_aes_key(char *key, uint8_t *bin_key)
{
char tmp[5] = { '0', 'x', 0, 0, 0 };
unsigned long ul;
@ -243,32 +237,16 @@ static int parse_aes_key(char *key, uint8_t *bin_key)
int fw_printenv (int argc, char *argv[])
{
char *env, *nxt;
int i, n_flag;
int rc = 0;
int i, rc = 0;
#ifdef CONFIG_FILE
if (argc >= 2 && strcmp(argv[1], "-c") == 0) {
if (argc < 3) {
fprintf(stderr,
"## Error: '-c' option requires the config file to use\n");
return -1;
}
config_file = argv[2];
argv += 2;
argc -= 2;
}
#endif
if (argc >= 2 && strcmp(argv[1], "-a") == 0) {
if (argc < 3) {
fprintf(stderr,
"## Error: '-a' option requires AES key\n");
return -1;
}
rc = parse_aes_key(argv[2], aes_key);
if (rc)
return rc;
aes_flag = 1;
argv += 2;
argc -= 2;
}
@ -292,7 +270,6 @@ int fw_printenv (int argc, char *argv[])
}
if (strcmp (argv[1], "-n") == 0) {
n_flag = 1;
++argv;
--argc;
if (argc != 2) {
@ -300,8 +277,6 @@ int fw_printenv (int argc, char *argv[])
"`-n' option requires exactly one argument\n");
return -1;
}
} else {
n_flag = 0;
}
for (i = 1; i < argc; ++i) { /* print single env variables */
@ -319,7 +294,7 @@ int fw_printenv (int argc, char *argv[])
}
val = envmatch (name, env);
if (val) {
if (!n_flag) {
if (!printenv_args.name_suppress) {
fputs (name, stdout);
putc ('=', stdout);
}
@ -339,7 +314,7 @@ int fw_printenv (int argc, char *argv[])
int fw_env_close(void)
{
int ret;
if (aes_flag) {
if (common_args.aes_flag) {
ret = env_aes_cbc_crypt(environment.data, 1);
if (ret) {
fprintf(stderr,
@ -495,7 +470,7 @@ int fw_env_write(char *name, char *value)
*/
int fw_setenv(int argc, char *argv[])
{
int i, rc;
int i;
size_t len;
char *name, **valv;
char *value = NULL;
@ -503,12 +478,6 @@ int fw_setenv(int argc, char *argv[])
#ifdef CONFIG_FILE
if (argc >= 2 && strcmp(argv[1], "-c") == 0) {
if (argc < 3) {
fprintf(stderr,
"## Error: '-c' option requires the config file to use\n");
return -1;
}
config_file = argv[2];
argv += 2;
argc -= 2;
}
@ -520,15 +489,6 @@ int fw_setenv(int argc, char *argv[])
}
if (strcmp(argv[1], "-a") == 0) {
if (argc < 3) {
fprintf(stderr,
"## Error: '-a' option requires AES key\n");
return -1;
}
rc = parse_aes_key(argv[2], aes_key);
if (rc)
return rc;
aes_flag = 1;
argv += 2;
argc -= 2;
}
@ -1026,7 +986,7 @@ static int env_aes_cbc_crypt(char *payload, const int enc)
uint32_t aes_blocks;
/* First we expand the key. */
aes_expand_key(aes_key, key_exp);
aes_expand_key(common_args.aes_key, key_exp);
/* Calculate the number of AES blocks to encrypt. */
aes_blocks = DIV_ROUND_UP(len, AES_KEY_LENGTH);
@ -1254,7 +1214,7 @@ int fw_env_open(void)
crc0 = crc32 (0, (uint8_t *) environment.data, ENV_SIZE);
if (aes_flag) {
if (common_args.aes_flag) {
ret = env_aes_cbc_crypt(environment.data, 0);
if (ret)
return ret;
@ -1311,7 +1271,7 @@ int fw_env_open(void)
crc1 = crc32 (0, (uint8_t *) redundant->data, ENV_SIZE);
if (aes_flag) {
if (common_args.aes_flag) {
ret = env_aes_cbc_crypt(redundant->data, 0);
if (ret)
return ret;
@ -1395,9 +1355,9 @@ static int parse_config ()
#if defined(CONFIG_FILE)
/* Fills in DEVNAME(), ENVSIZE(), DEVESIZE(). Or don't. */
if (get_config (config_file)) {
fprintf (stderr,
"Cannot parse config file '%s': %s\n", config_file, strerror (errno));
if (get_config(common_args.config_file)) {
fprintf(stderr, "Cannot parse config file '%s': %m\n",
common_args.config_file);
return -1;
}
#else

15
tools/env/fw_env.h vendored
Unescape View File

@ -5,6 +5,9 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <aes.h>
#include <stdint.h>
/* Pull in the current config to define the default environment */
#include <linux/kconfig.h>
@ -54,7 +57,17 @@
"bootm"
#endif
struct common_args {
#ifdef CONFIG_FILE
char *config_file;
#endif
uint8_t aes_key[AES_KEY_LENGTH];
int aes_flag; /* Is AES encryption used? */
};
extern struct common_args common_args;
struct printenv_args {
int name_suppress;
};
extern struct printenv_args printenv_args;
@ -63,6 +76,8 @@ struct setenv_args {
};
extern struct setenv_args setenv_args;
int parse_aes_key(char *key, uint8_t *bin_key);
extern int fw_printenv(int argc, char *argv[]);
extern char *fw_getenv (char *name);
extern int fw_setenv (int argc, char *argv[]);

31
tools/env/fw_env_main.c vendored
Unescape View File

@ -45,6 +45,7 @@ static struct option long_options[] = {
{NULL, 0, NULL, 0}
};
struct common_args common_args;
struct printenv_args printenv_args;
struct setenv_args setenv_args;
@ -84,17 +85,27 @@ int parse_printenv_args(int argc, char *argv[])
{
int c;
#ifdef CONFIG_FILE
common_args.config_file = CONFIG_FILE;
#endif
while ((c = getopt_long (argc, argv, "a:c:ns:h",
long_options, NULL)) != EOF) {
switch (c) {
case 'a':
/* AES key, handled later */
if (parse_aes_key(optarg, common_args.aes_key)) {
fprintf(stderr, "AES key parse error\n");
return EXIT_FAILURE;
}
common_args.aes_flag = 1;
break;
#ifdef CONFIG_FILE
case 'c':
/* handled later */
common_args.config_file = optarg;
break;
#endif
case 'n':
/* handled in fw_printenv */
printenv_args.name_suppress = 1;
break;
case 'h':
usage();
@ -113,15 +124,25 @@ int parse_setenv_args(int argc, char *argv[])
{
int c;
#ifdef CONFIG_FILE
common_args.config_file = CONFIG_FILE;
#endif
while ((c = getopt_long (argc, argv, "a:c:ns:h",
long_options, NULL)) != EOF) {
switch (c) {
case 'a':
/* AES key, handled later */
if (parse_aes_key(optarg, common_args.aes_key)) {
fprintf(stderr, "AES key parse error\n");
return EXIT_FAILURE;
}
common_args.aes_flag = 1;
break;
#ifdef CONFIG_FILE
case 'c':
/* handled later */
common_args.config_file = optarg;
break;
#endif
case 's':
setenv_args.script_file = optarg;
break;

Write Preview
Loading…
Cancel
Save