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| author | Denys Vlasenko | 2011-05-13 03:19:01 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2011-05-13 03:19:01 +0200 |
| commit | 12a432715f066cf9d677316a39c9e0ebc6d72404 (patch) | |
| tree | 14a33cdedbd6ba7739449cc3dec968b55a01efad /loginutils/cryptpw.c | |
| parent | 0806e401d6747c391fa0427e0ccba9951f9a1c3d (diff) | |
| download | busybox-12a432715f066cf9d677316a39c9e0ebc6d72404.zip busybox-12a432715f066cf9d677316a39c9e0ebc6d72404.tar.gz | |
adduser: safe username passing to passwd/addgroup
passwd: support creating SHA passwords
random code shrink
function old new delta
crypt_make_pw_salt - 87 +87
adduser_main 883 904 +21
...
crypt_make_salt 99 89 -10
chpasswd_main 329 312 -17
packed_usage 28731 28691 -40
passwd_main 1070 1000 -70
cryptpw_main 310 224 -86
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/12 up/down: 154/-288) Total: -134 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'loginutils/cryptpw.c')
| -rw-r--r-- | loginutils/cryptpw.c | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/loginutils/cryptpw.c b/loginutils/cryptpw.c index bbaa858..b25a39a 100644 --- a/loginutils/cryptpw.c +++ b/loginutils/cryptpw.c @@ -19,7 +19,7 @@ //usage: IF_LONG_OPTS( //usage: "\n -P,--password-fd=N Read password from fd N" /* //usage: "\n -s,--stdin Use stdin; like -P0" */ -//usage: "\n -m,--method=TYPE Encryption method TYPE" +//usage: "\n -m,--method=TYPE Encryption method" //usage: "\n -S,--salt=SALT" //usage: ) //usage: IF_NOT_LONG_OPTS( @@ -39,7 +39,7 @@ //usage: IF_LONG_OPTS( //usage: "\n -P,--password-fd=N Read password from fd N" /* //usage: "\n -s,--stdin Use stdin; like -P0" */ -//usage: "\n -m,--method=TYPE Encryption method TYPE" +//usage: "\n -m,--method=TYPE Encryption method" //usage: "\n -S,--salt=SALT" //usage: ) //usage: IF_NOT_LONG_OPTS( @@ -92,11 +92,9 @@ to cryptpw. -a option (alias for -m) came from cryptpw. int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int cryptpw_main(int argc UNUSED_PARAM, char **argv) { - /* $N$ + sha_salt_16_bytes + NUL */ - char salt[3 + 16 + 1]; + char salt[MAX_PW_SALT_LEN]; char *salt_ptr; const char *opt_m, *opt_S; - int len; int fd; #if ENABLE_LONG_OPTS @@ -121,24 +119,9 @@ int cryptpw_main(int argc UNUSED_PARAM, char **argv) if (argv[0] && !opt_S) opt_S = argv[1]; - len = 2/2; - salt_ptr = salt; - if (opt_m[0] != 'd') { /* not des */ - len = 8/2; /* so far assuming md5 */ - *salt_ptr++ = '$'; - *salt_ptr++ = '1'; - *salt_ptr++ = '$'; -#if !ENABLE_USE_BB_CRYPT || ENABLE_USE_BB_CRYPT_SHA - if (opt_m[0] == 's') { /* sha */ - salt[1] = '5' + (strcmp(opt_m, "sha512") == 0); - len = 16/2; - } -#endif - } + salt_ptr = crypt_make_pw_salt(salt, opt_m); if (opt_S) - safe_strncpy(salt_ptr, opt_S, sizeof(salt) - 3); - else - crypt_make_salt(salt_ptr, len, 0); + safe_strncpy(salt_ptr, opt_S, sizeof(salt) - (sizeof("$N$")-1)); xmove_fd(fd, STDIN_FILENO); |