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| author | Denys Vlasenko | 2013-11-19 13:36:45 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2013-11-19 13:36:45 +0100 |
| commit | 8b59b2c13ededb2c82e36193b6d6e969df36531c (patch) | |
| tree | 7b5065279d3c5a6c8bd0ca90584d49bb73aac01c /libbb | |
| parent | 6ef77291122d231754e7292630681dc67c109d60 (diff) | |
| download | busybox-8b59b2c13ededb2c82e36193b6d6e969df36531c.zip busybox-8b59b2c13ededb2c82e36193b6d6e969df36531c.tar.gz | |
libbb: move nuke_str() from passwd into libbb
function old new delta
nuke_str - 15 +15
ask_and_check_password_extended 215 206 -9
init_main 781 771 -10
nuke_str 27 - -27
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 15/-46) Total: -31 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/correct_password.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/libbb/correct_password.c b/libbb/correct_password.c index d39a583..5727c65 100644 --- a/libbb/correct_password.c +++ b/libbb/correct_password.c @@ -30,6 +30,15 @@ #include "libbb.h" +void FAST_FUNC nuke_str(char *str) +{ + if (str) { + while (*str) + *str++ = 0; + /* or: memset(str, 0, strlen(str)); - not as small as above */ + } +} + /* Ask the user for a password. * Return 1 without asking if PW has an empty password. * Return -1 on EOF, error while reading input, or timeout. @@ -76,7 +85,7 @@ int FAST_FUNC ask_and_check_password_extended(const struct passwd *pw, encrypted = pw_encrypt(unencrypted, correct, 1); r = (strcmp(encrypted, correct) == 0); free(encrypted); - memset(unencrypted, 0, strlen(unencrypted)); + nuke_str(unencrypted); return r; } |