Hi,
I'd try to write my own auth by modifying the do_auth_custom in
preauthcustom.c.
The authtest success only when no password provided, however, when
password
is correct, "AUTHFAILURE" came out.
My auth is simply map a login name to a system user name (using
getpwnam() ).
Thanks a lot,
Kevin.
Here is the code:
static int do_auth_custom(const char *userid, struct authinfo *authinfo)
{
#if HAVE_GETSPENT
struct spwd *spw;
#endif
struct passwd *pw;
char *uname;
if (strcmp(userid, "kevin.wong")==0)
uname=strdup("kevin");
else
uanme=strdup(userid);
if ((pw=getpwnam(uname)) == 0)
{
if (errno == ENOMEM) return (1);
errno=EPERM;
free(uname);
return (-1);
}
authinfo->sysusername=uname;
authinfo->sysgroupid=pw->pw_gid;
authinfo->homedir=pw->pw_dir;
authinfo->address=uname;
authinfo->fullname=pw->pw_gecos;
authinfo->passwd=pw->pw_passwd;
#if HAVE_GETSPENT
if ((spw=getspnam(uname)) != 0)
authinfo->passwd=spw->sp_pwdp;
#endif
return (0);
}
-----------------------------
RESULT of authtest
------------------------------
==== login name wiht no password ====
[root@localhost authlib]# ./authtest -s imap -m authcustom kevin.wong
Authenticated: module authcustom
Home directory: /home/kevin
UID/GID: 500/500
AUTHADDR=kevin
AUTHFULLNAME=Kevin Wong
[root@localhost authlib]#
==== System username with correct password ====
[root@localhost authlib]# ./authtest -s imap -m authcustom kevin
correctpasswd
Authenticated: module authcustom
Home directory: /home/kevin
UID/GID: 500/500
AUTHADDR=kevin
AUTHFULLNAME=Kevin Wong
[root@localhost authlib]#
==== not a auth user ====
[root@localhost authlib]# ./authtest -s imap -m authcustom abc
Authentication FAILED!
[root@localhost authlib]#
==== login name with wrong password ====
[root@localhost authlib]# ./authtest -s imap -m authcustom kevin.wong
wrongpasswd
Authentication FAILED!
[root@localhost authlib]#
==== login name with correct password ====
[root@localhost authlib]# ./authtest -s imap -m authcustom kevin.wong
correctpasswd
AUTHFAILURE
[root@localhost authlib]#
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