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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-07-27 11:22:34 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-07-27 11:22:34 +0000 |
| commit | 1d10aaf11617558592b0215fe85bc42fa444e384 (patch) | |
| tree | 033e1b9896e651a3ab1d94b255a534ff39a91845 | |
| parent | 3734b946bfef55c8f63d367422da5c7aa7b972db (diff) | |
| download | busybox-1d10aaf11617558592b0215fe85bc42fa444e384.tar.gz | |
passwd: fix bug: we are trying to update shadow even if user's record is in passwd!
getspnam is guilty, it lies that user record exists in shadow.
| -rw-r--r-- | include/libbb.h | 8 | ||||
| -rw-r--r-- | loginutils/passwd.c | 20 |
2 files changed, 19 insertions, 9 deletions
diff --git a/include/libbb.h b/include/libbb.h index 82cee380b..b438ec25f 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -482,10 +482,10 @@ int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); /* chown-like handling of "user[:[group]" */ void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group); /* bb_getpwuid, bb_getgrgid: -bb_getXXXid(buf, bufsz, id) - copy user/group name or id - as a string to buf, return user/group name or NULL -bb_getXXXid(NULL, 0, id) - return user/group name or NULL -bb_getXXXid(NULL, -1, id) - return user/group name or exit + * bb_getXXXid(buf, bufsz, id) - copy user/group name or id + * as a string to buf, return user/group name or NULL + * bb_getXXXid(NULL, 0, id) - return user/group name or NULL + * bb_getXXXid(NULL, -1, id) - return user/group name or exit */ char *bb_getpwuid(char *name, int bufsize, long uid); char *bb_getgrgid(char *group, int bufsize, long gid); diff --git a/loginutils/passwd.c b/loginutils/passwd.c index a293ee926..4f7094aec 100644 --- a/loginutils/passwd.c +++ b/loginutils/passwd.c @@ -127,15 +127,16 @@ int passwd_main(int argc, char **argv) bb_error_msg_and_die("%s can't change password for %s", myname, name); } - filename = bb_path_passwd_file; #if ENABLE_FEATURE_SHADOWPASSWDS - if (getspnam_r(pw->pw_name, &spw, buffer, sizeof(buffer), &result)) { + /* getspnam_r() can lie! Even if user isn't in shadow, it can + * return success (pwd field was seen set to "!" in this case) */ + if (getspnam_r(pw->pw_name, &spw, buffer, sizeof(buffer), &result) + || LONE_CHAR(spw.sp_pwdp, '!')) { /* LOGMODE_BOTH */ bb_error_msg("no record of %s in %s, using %s", name, bb_path_shadow_file, bb_path_passwd_file); } else { - filename = bb_path_shadow_file; pw->pw_passwd = spw.sp_pwdp; } #endif @@ -175,8 +176,17 @@ int passwd_main(int argc, char **argv) signal(SIGQUIT, SIG_IGN); umask(077); xsetuid(0); - rc = update_passwd(filename, name, newp); - logmode = LOGMODE_BOTH; + +#if ENABLE_FEATURE_SHADOWPASSWDS + filename = bb_path_shadow_file; + rc = update_passwd(bb_path_shadow_file, name, newp); + if (rc == 0) /* no lines updated, no errors detected */ +#endif + { + filename = bb_path_passwd_file; + rc = update_passwd(bb_path_passwd_file, name, newp); + } + /* LOGMODE_BOTH */ if (rc < 0) bb_error_msg_and_die("cannot update password file %s", filename); |