/*******************************************************************
check on a DCE/DFS authentication
********************************************************************/
static BOOL dfs_auth(char *this_user,char *password)
{
error_status_t err;
int err2;
int prterr;
boolean32 password_reset;
sec_passwd_rec_t my_dce_password;
sec_login_auth_src_t auth_src = sec_login_auth_src_network;
unsigned char dce_errstr[dce_c_error_string_len];
/*
* We only go for a DCE login context if the given password
* matches that stored in the local password file..
* Assumes local passwd file is kept in sync w/ DCE RGY!
*/
/* Fix for original (broken) code from Brett Wooldridge <*****@*****.**> */
if (dcelogin_atmost_once)
return (False);
/* This can be ifdefed as the DCE check below is stricter... */
#ifndef NO_CRYPT
if ( strcmp((char *)crypt(password,this_salt),this_crypted) )
return (False);
#endif
if (sec_login_setup_identity(
(unsigned char *)this_user,
sec_login_no_flags,
&my_dce_sec_context,
&err) == 0)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,("DCE Setup Identity for %s failed: %s\n",
this_user,dce_errstr));
return(False);
}
my_dce_password.version_number = sec_passwd_c_version_none;
my_dce_password.pepper = NULL;
my_dce_password.key.key_type = sec_passwd_plain;
my_dce_password.key.tagged_union.plain = (idl_char *)password;
if (sec_login_valid_and_cert_ident(my_dce_sec_context,
&my_dce_password,
&password_reset,
&auth_src,
&err) == 0 )
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,("DCE Identity Validation failed for principal %s: %s\n",
this_user,dce_errstr));
return(False);
}
sec_login_set_context(my_dce_sec_context, &err);
if (err != error_status_ok )
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,("DCE login failed for principal %s, cant set context: %s\n",
this_user,dce_errstr));
sec_login_purge_context(my_dce_sec_context, &err);
return(False);
}
else
{
DEBUG(0,("DCE login succeeded for principal %s on pid %d\n",
this_user, getpid()));
}
dcelogin_atmost_once = 1;
return (True);
}
/*******************************************************************
check on a DCE/DFS authentication
********************************************************************/
static BOOL dfs_auth(char *user, char *password)
{
error_status_t err;
int err2;
int prterr;
signed32 expire_time, current_time;
boolean32 password_reset;
struct passwd *pw;
sec_passwd_rec_t passwd_rec;
sec_login_auth_src_t auth_src = sec_login_auth_src_network;
unsigned char dce_errstr[dce_c_error_string_len];
gid_t egid;
if (dcelogin_atmost_once)
return (False);
#ifdef HAVE_CRYPT
/*
* We only go for a DCE login context if the given password
* matches that stored in the local password file..
* Assumes local passwd file is kept in sync w/ DCE RGY!
*/
if (strcmp((char *)crypt(password, this_salt), this_crypted))
{
return (False);
}
#endif
sec_login_get_current_context(&my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get current context. %s\n", dce_errstr));
return (False);
}
sec_login_certify_identity(my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get current context. %s\n", dce_errstr));
return (False);
}
sec_login_get_expiration(my_dce_sec_context, &expire_time, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get expiration. %s\n", dce_errstr));
return (False);
}
time(¤t_time);
if (expire_time < (current_time + 60))
{
struct passwd *pw;
sec_passwd_rec_t *key;
sec_login_get_pwent(my_dce_sec_context,
(sec_login_passwd_t *) & pw, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr));
return (False);
}
sec_login_refresh_identity(my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't refresh identity. %s\n",
dce_errstr));
return (False);
}
sec_key_mgmt_get_key(rpc_c_authn_dce_secret, NULL,
(unsigned char *)pw->pw_name,
sec_c_key_version_none,
(void **)&key, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get key for %s. %s\n",
pw->pw_name, dce_errstr));
return (False);
}
sec_login_valid_and_cert_ident(my_dce_sec_context, key,
&password_reset, &auth_src,
&err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,
("DCE can't validate and certify identity for %s. %s\n",
pw->pw_name, dce_errstr));
}
sec_key_mgmt_free_key(key, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't free key.\n", dce_errstr));
}
}
if (sec_login_setup_identity((unsigned char *)user,
sec_login_no_flags,
&my_dce_sec_context, &err) == 0)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE Setup Identity for %s failed: %s\n",
user, dce_errstr));
return (False);
}
sec_login_get_pwent(my_dce_sec_context,
(sec_login_passwd_t *) & pw, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr));
return (False);
}
sec_login_purge_context(&my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't purge context. %s\n", dce_errstr));
return (False);
}
/*
* NB. I'd like to change these to call something like change_to_user()
* instead but currently we don't have a connection
* context to become the correct user. This is already
* fairly platform specific code however, so I think
* this should be ok. I have added code to go
* back to being root on error though. JRA.
*/
egid = getegid();
set_effective_gid(pw->pw_gid);
set_effective_uid(pw->pw_uid);
if (sec_login_setup_identity((unsigned char *)user,
sec_login_no_flags,
&my_dce_sec_context, &err) == 0)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE Setup Identity for %s failed: %s\n",
user, dce_errstr));
goto err;
}
sec_login_get_pwent(my_dce_sec_context,
(sec_login_passwd_t *) & pw, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr));
goto err;
}
passwd_rec.version_number = sec_passwd_c_version_none;
passwd_rec.pepper = NULL;
passwd_rec.key.key_type = sec_passwd_plain;
passwd_rec.key.tagged_union.plain = (idl_char *) password;
sec_login_validate_identity(my_dce_sec_context,
&passwd_rec, &password_reset,
&auth_src, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,
("DCE Identity Validation failed for principal %s: %s\n",
user, dce_errstr));
goto err;
}
sec_login_certify_identity(my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE certify identity failed: %s\n", dce_errstr));
goto err;
}
if (auth_src != sec_login_auth_src_network)
{
DEBUG(0, ("DCE context has no network credentials.\n"));
}
sec_login_set_context(my_dce_sec_context, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0,
("DCE login failed for principal %s, cant set context: %s\n",
user, dce_errstr));
sec_login_purge_context(&my_dce_sec_context, &err);
goto err;
}
sec_login_get_pwent(my_dce_sec_context,
(sec_login_passwd_t *) & pw, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr));
goto err;
}
DEBUG(0, ("DCE login succeeded for principal %s on pid %d\n",
user, sys_getpid()));
DEBUG(3, ("DCE principal: %s\n"
" uid: %d\n"
" gid: %d\n",
pw->pw_name, pw->pw_uid, pw->pw_gid));
DEBUG(3, (" info: %s\n"
" dir: %s\n"
" shell: %s\n",
pw->pw_gecos, pw->pw_dir, pw->pw_shell));
sec_login_get_expiration(my_dce_sec_context, &expire_time, &err);
if (err != error_status_ok)
{
dce_error_inq_text(err, dce_errstr, &err2);
DEBUG(0, ("DCE can't get expiration. %s\n", dce_errstr));
goto err;
}
set_effective_uid(0);
set_effective_gid(0);
DEBUG(0,
("DCE context expires: %s", asctime(localtime(&expire_time))));
dcelogin_atmost_once = 1;
return (True);
err:
/* Go back to root, JRA. */
set_effective_uid(0);
set_effective_gid(egid);
return (False);
}
