NTSTATUS set_conn_force_user_group(connection_struct *conn, int snum)
{
NTSTATUS status;
if (*lp_force_user(talloc_tos(), snum)) {
/*
* Replace conn->session_info with a completely faked up one
* from the username we are forced into :-)
*/
char *fuser;
char *sanitized_username;
struct auth_session_info *forced_serverinfo;
bool guest;
fuser = talloc_string_sub(conn, lp_force_user(talloc_tos(), snum), "%S",
lp_const_servicename(snum));
if (fuser == NULL) {
return NT_STATUS_NO_MEMORY;
}
guest = security_session_user_level(conn->session_info, NULL) < SECURITY_USER;
status = make_session_info_from_username(
conn, fuser,
guest,
&forced_serverinfo);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
/* We don't want to replace the original sanitized_username
as it is the original user given in the connect attempt.
This is used in '%U' substitutions. */
sanitized_username = discard_const_p(char,
forced_serverinfo->unix_info->sanitized_username);
TALLOC_FREE(sanitized_username);
forced_serverinfo->unix_info->sanitized_username =
talloc_move(forced_serverinfo->unix_info,
&conn->session_info->unix_info->sanitized_username);
TALLOC_FREE(conn->session_info);
conn->session_info = forced_serverinfo;
conn->force_user = true;
DEBUG(3,("Forced user %s\n", fuser));
}
/*
* If force group is true, then override
* any groupid stored for the connecting user.
*/
if (*lp_force_group(talloc_tos(), snum)) {
status = find_forced_group(
conn->force_user, snum, conn->session_info->unix_info->unix_name,
&conn->session_info->security_token->sids[1],
&conn->session_info->unix_token->gid);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
/*
* We need to cache this gid, to use within
* change_to_user() separately from the conn->session_info
* struct. We only use conn->session_info directly if
* "force_user" was set.
*/
conn->force_group_gid = conn->session_info->unix_token->gid;
}
return NT_STATUS_OK;
}
static NTSTATUS create_connection_session_info(struct smbd_server_connection *sconn,
TALLOC_CTX *mem_ctx, int snum,
struct auth_session_info *vuid_serverinfo,
DATA_BLOB password,
struct auth_session_info **presult)
{
if (lp_guest_only(snum)) {
return make_session_info_guest(mem_ctx, presult);
}
if (vuid_serverinfo != NULL) {
struct auth_session_info *result;
/*
* This is the normal security != share case where we have a
* valid vuid from the session setup. */
if (security_session_user_level(vuid_serverinfo, NULL) < SECURITY_USER) {
if (!lp_guest_ok(snum)) {
DEBUG(2, ("guest user (from session setup) "
"not permitted to access this share "
"(%s)\n", lp_servicename(snum)));
return NT_STATUS_ACCESS_DENIED;
}
} else {
if (!user_ok_token(vuid_serverinfo->unix_info->unix_name,
vuid_serverinfo->info->domain_name,
vuid_serverinfo->security_token, snum)) {
DEBUG(2, ("user '%s' (from session setup) not "
"permitted to access this share "
"(%s)\n",
vuid_serverinfo->unix_info->unix_name,
lp_servicename(snum)));
return NT_STATUS_ACCESS_DENIED;
}
}
result = copy_session_info(mem_ctx, vuid_serverinfo);
if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
*presult = result;
return NT_STATUS_OK;
}
if (lp_security() == SEC_SHARE) {
fstring user;
bool guest;
/* add the sharename as a possible user name if we
are in share mode security */
add_session_user(sconn, lp_servicename(snum));
/* shall we let them in? */
if (!authorise_login(sconn, snum,user,password,&guest)) {
DEBUG( 2, ( "Invalid username/password for [%s]\n",
lp_servicename(snum)) );
return NT_STATUS_WRONG_PASSWORD;
}
return make_session_info_from_username(mem_ctx, user, guest,
presult);
}
DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
return NT_STATUS_ACCESS_DENIED;
}
