/*
Unix SMB/CIFS implementation.
Authentication utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Andrew Bartlett 2001
Copyright (C) Jeremy Allison 2000-2001
Copyright (C) Rafal Szczesniak 2002
Copyright (C) Volker Lendecke 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "includes.h"
#include "smbd/globals.h"
#include "../libcli/auth/libcli_auth.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
/****************************************************************************
Ensure primary group SID is always at position 0 in a
auth_serversupplied_info struct.
****************************************************************************/
static void sort_sid_array_for_smbd(struct auth_serversupplied_info *result,
const DOM_SID *pgroup_sid)
{
unsigned int i;
if (!result->sids) {
return;
}
if (sid_compare(&result->sids[0], pgroup_sid)==0) {
return;
}
for (i = 1; i < result->num_sids; i++) {
if (sid_compare(pgroup_sid,
&result->sids[i]) == 0) {
sid_copy(&result->sids[i], &result->sids[0]);
sid_copy(&result->sids[0], pgroup_sid);
return;
}
}
}
/****************************************************************************
Create a UNIX user on demand.
****************************************************************************/
static int _smb_create_user(const char *domain, const char *unix_username, const char *homedir)
{
TALLOC_CTX *ctx = talloc_tos();
char *add_script;
int ret;
add_script = talloc_strdup(ctx, lp_adduser_script());
if (!add_script || !*add_script) {
return -1;
}
add_script = talloc_all_string_sub(ctx,
add_script,
"%u",
unix_username);
if (!add_script) {
return -1;
}
if (domain) {
add_script = talloc_all_string_sub(ctx,
add_script,
"%D",
domain);
if (!add_script) {
return -1;
}
}
if (homedir) {
add_script = talloc_all_string_sub(ctx,
add_script,
"%H",
homedir);
if (!add_script) {
return -1;
}
}
ret = smbrun(add_script,NULL);
flush_pwnam_cache();
DEBUG(ret ? 0 : 3,
("smb_create_user: Running the command `%s' gave %d\n",
add_script,ret));
return ret;
}
/****************************************************************************
Create an auth_usersupplied_data structure
****************************************************************************/
static NTSTATUS make_user_info(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *internal_username,
const char *client_domain,
const char *domain,
const char *wksta_name,
DATA_BLOB *lm_pwd, DATA_BLOB *nt_pwd,
DATA_BLOB *lm_interactive_pwd, DATA_BLOB *nt_interactive_pwd,
DATA_BLOB *plaintext,
bool encrypted)
{
DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
*user_info = SMB_MALLOC_P(struct auth_usersupplied_info);
if (*user_info == NULL) {
DEBUG(0,("malloc failed for user_info (size %lu)\n", (unsigned long)sizeof(*user_info)));
return NT_STATUS_NO_MEMORY;
}
ZERO_STRUCTP(*user_info);
DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
(*user_info)->smb_name = SMB_STRDUP(smb_name);
if ((*user_info)->smb_name == NULL) {
free_user_info(user_info);
return NT_STATUS_NO_MEMORY;
}
(*user_info)->internal_username = SMB_STRDUP(internal_username);
if ((*user_info)->internal_username == NULL) {
free_user_info(user_info);
return NT_STATUS_NO_MEMORY;
}
(*user_info)->domain = SMB_STRDUP(domain);
if ((*user_info)->domain == NULL) {
free_user_info(user_info);
return NT_STATUS_NO_MEMORY;
}
(*user_info)->client_domain = SMB_STRDUP(client_domain);
if ((*user_info)->client_domain == NULL) {
free_user_info(user_info);
return NT_STATUS_NO_MEMORY;
}
(*user_info)->wksta_name = SMB_STRDUP(wksta_name);
if ((*user_info)->wksta_name == NULL) {
free_user_info(user_info);
return NT_STATUS_NO_MEMORY;
}
DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
if (lm_pwd)
(*user_info)->lm_resp = data_blob(lm_pwd->data, lm_pwd->length);
if (nt_pwd)
(*user_info)->nt_resp = data_blob(nt_pwd->data, nt_pwd->length);
if (lm_interactive_pwd)
(*user_info)->lm_interactive_pwd = data_blob(lm_interactive_pwd->data, lm_interactive_pwd->length);
if (nt_interactive_pwd)
(*user_info)->nt_interactive_pwd = data_blob(nt_interactive_pwd->data, nt_interactive_pwd->length);
if (plaintext)
(*user_info)->plaintext_password = data_blob(plaintext->data, plaintext->length);
(*user_info)->encrypted = encrypted;
(*user_info)->logon_parameters = 0;
DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
return NT_STATUS_OK;
}
/****************************************************************************
Create an auth_usersupplied_data structure after appropriate mapping.
****************************************************************************/
NTSTATUS make_user_info_map(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
const char *wksta_name,
DATA_BLOB *lm_pwd,
DATA_BLOB *nt_pwd,
DATA_BLOB *lm_interactive_pwd,
DATA_BLOB *nt_interactive_pwd,
DATA_BLOB *plaintext,
bool encrypted)
{
struct smbd_server_connection *sconn = smbd_server_conn;
const char *domain;
NTSTATUS result;
bool was_mapped;
fstring internal_username;
fstrcpy(internal_username, smb_name);
was_mapped = map_username(sconn, internal_username);
DEBUG(5, ("Mapping user [%s]\\[%s] from workstation [%s]\n",
client_domain, smb_name, wksta_name));
domain = client_domain;
/* If you connect to a Windows domain member using a bogus domain name,
* the Windows box will map the BOGUS\user to SAMNAME\user. Thus, if
* the Windows box is a DC the name will become DOMAIN\user and be
* authenticated against AD, if the Windows box is a member server but
* not a DC the name will become WORKSTATION\user. A standalone
* non-domain member box will also map to WORKSTATION\user.
* This also deals with the client passing in a "" domain */
if (!is_trusted_domain(domain) &&
!strequal(domain, my_sam_name()))
{
if (lp_map_untrusted_to_domain())
domain = my_sam_name();
else
domain = get_global_sam_name();
DEBUG(5, ("Mapped domain from [%s] to [%s] for user [%s] from "
"workstation [%s]\n",
client_domain, domain, smb_name, wksta_name));
}
/* We know that the given domain is trusted (and we are allowing them),
* it is our global SAM name, or for legacy behavior it is our
* primary domain name */
result = make_user_info(user_info, smb_name, internal_username,
client_domain, domain, wksta_name,
lm_pwd, nt_pwd,
lm_interactive_pwd, nt_interactive_pwd,
plaintext, encrypted);
if (NT_STATUS_IS_OK(result)) {
(*user_info)->was_mapped = was_mapped;
}
return result;
}
/****************************************************************************
Create an auth_usersupplied_data, making the DATA_BLOBs here.
Decrypt and encrypt the passwords.
****************************************************************************/
bool make_user_info_netlogon_network(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
const char *wksta_name,
uint32 logon_parameters,
const uchar *lm_network_pwd,
int lm_pwd_len,
const uchar *nt_network_pwd,
int nt_pwd_len)
{
bool ret;
NTSTATUS status;
DATA_BLOB lm_blob = data_blob(lm_network_pwd, lm_pwd_len);
DATA_BLOB nt_blob = data_blob(nt_network_pwd, nt_pwd_len);
status = make_user_info_map(user_info,
smb_name, client_domain,
wksta_name,
lm_pwd_len ? &lm_blob : NULL,
nt_pwd_len ? &nt_blob : NULL,
NULL, NULL, NULL,
True);
if (NT_STATUS_IS_OK(status)) {
(*user_info)->logon_parameters = logon_parameters;
}
ret = NT_STATUS_IS_OK(status) ? True : False;
data_blob_free(&lm_blob);
data_blob_free(&nt_blob);
return ret;
}
/****************************************************************************
Create an auth_usersupplied_data, making the DATA_BLOBs here.
Decrypt and encrypt the passwords.
****************************************************************************/
bool make_user_info_netlogon_interactive(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
const char *wksta_name,
uint32 logon_parameters,
const uchar chal[8],
const uchar lm_interactive_pwd[16],
const uchar nt_interactive_pwd[16],
const uchar *dc_sess_key)
{
unsigned char lm_pwd[16];
unsigned char nt_pwd[16];
unsigned char local_lm_response[24];
unsigned char local_nt_response[24];
unsigned char key[16];
memcpy(key, dc_sess_key, 16);
if (lm_interactive_pwd)
memcpy(lm_pwd, lm_interactive_pwd, sizeof(lm_pwd));
if (nt_interactive_pwd)
memcpy(nt_pwd, nt_interactive_pwd, sizeof(nt_pwd));
#ifdef DEBUG_PASSWORD
DEBUG(100,("key:"));
dump_data(100, key, sizeof(key));
DEBUG(100,("lm owf password:"));
dump_data(100, lm_pwd, sizeof(lm_pwd));
DEBUG(100,("nt owf password:"));
dump_data(100, nt_pwd, sizeof(nt_pwd));
#endif
if (lm_interactive_pwd)
arcfour_crypt(lm_pwd, key, sizeof(lm_pwd));
if (nt_interactive_pwd)
arcfour_crypt(nt_pwd, key, sizeof(nt_pwd));
#ifdef DEBUG_PASSWORD
DEBUG(100,("decrypt of lm owf password:"));
dump_data(100, lm_pwd, sizeof(lm_pwd));
DEBUG(100,("decrypt of nt owf password:"));
dump_data(100, nt_pwd, sizeof(nt_pwd));
#endif
if (lm_interactive_pwd)
SMBOWFencrypt(lm_pwd, chal,
local_lm_response);
if (nt_interactive_pwd)
SMBOWFencrypt(nt_pwd, chal,
local_nt_response);
/* Password info paranoia */
ZERO_STRUCT(key);
{
bool ret;
NTSTATUS nt_status;
DATA_BLOB local_lm_blob;
DATA_BLOB local_nt_blob;
DATA_BLOB lm_interactive_blob;
DATA_BLOB nt_interactive_blob;
if (lm_interactive_pwd) {
local_lm_blob = data_blob(local_lm_response,
sizeof(local_lm_response));
lm_interactive_blob = data_blob(lm_pwd,
sizeof(lm_pwd));
ZERO_STRUCT(lm_pwd);
}
if (nt_interactive_pwd) {
local_nt_blob = data_blob(local_nt_response,
sizeof(local_nt_response));
nt_interactive_blob = data_blob(nt_pwd,
sizeof(nt_pwd));
ZERO_STRUCT(nt_pwd);
}
nt_status = make_user_info_map(
user_info,
smb_name, client_domain, wksta_name,
lm_interactive_pwd ? &local_lm_blob : NULL,
nt_interactive_pwd ? &local_nt_blob : NULL,
lm_interactive_pwd ? &lm_interactive_blob : NULL,
nt_interactive_pwd ? &nt_interactive_blob : NULL,
NULL, True);
if (NT_STATUS_IS_OK(nt_status)) {
(*user_info)->logon_parameters = logon_parameters;
}
ret = NT_STATUS_IS_OK(nt_status) ? True : False;
data_blob_free(&local_lm_blob);
data_blob_free(&local_nt_blob);
data_blob_free(&lm_interactive_blob);
data_blob_free(&nt_interactive_blob);
return ret;
}
}
/****************************************************************************
Create an auth_usersupplied_data structure
****************************************************************************/
bool make_user_info_for_reply(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
const uint8 chal[8],
DATA_BLOB plaintext_password)
{
DATA_BLOB local_lm_blob;
DATA_BLOB local_nt_blob;
NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
/*
* Not encrypted - do so.
*/
DEBUG(5,("make_user_info_for_reply: User passwords not in encrypted "
"format.\n"));
if (plaintext_password.data) {
unsigned char local_lm_response[24];
#ifdef DEBUG_PASSWORD
DEBUG(10,("Unencrypted password (len %d):\n",
(int)plaintext_password.length));
dump_data(100, plaintext_password.data,
plaintext_password.length);
#endif
SMBencrypt( (const char *)plaintext_password.data,
(const uchar*)chal, local_lm_response);
local_lm_blob = data_blob(local_lm_response, 24);
/* We can't do an NT hash here, as the password needs to be
case insensitive */
local_nt_blob = data_blob_null;
} else {
local_lm_blob = data_blob_null;
local_nt_blob = data_blob_null;
}
ret = make_user_info_map(
user_info, smb_name, client_domain,
get_remote_machine_name(),
local_lm_blob.data ? &local_lm_blob : NULL,
local_nt_blob.data ? &local_nt_blob : NULL,
NULL, NULL,
plaintext_password.data ? &plaintext_password : NULL,
False);
data_blob_free(&local_lm_blob);
return NT_STATUS_IS_OK(ret) ? True : False;
}
/****************************************************************************
Create an auth_usersupplied_data structure
****************************************************************************/
NTSTATUS make_user_info_for_reply_enc(struct auth_usersupplied_info **user_info,
const char *smb_name,
const char *client_domain,
DATA_BLOB lm_resp, DATA_BLOB nt_resp)
{
return make_user_info_map(user_info, smb_name,
client_domain,
get_remote_machine_name(),
lm_resp.data ? &lm_resp : NULL,
nt_resp.data ? &nt_resp : NULL,
NULL, NULL, NULL,
True);
}
/****************************************************************************
Create a guest user_info blob, for anonymous authenticaion.
****************************************************************************/
bool make_user_info_guest(struct auth_usersupplied_info **user_info)
{
NTSTATUS nt_status;
nt_status = make_user_info(user_info,
"","",
"","",
"",
NULL, NULL,
NULL, NULL,
NULL,
True);
return NT_STATUS_IS_OK(nt_status) ? True : False;
}
static int server_info_dtor(struct auth_serversupplied_info *server_info)
{
TALLOC_FREE(server_info->sam_account);
ZERO_STRUCTP(server_info);
return 0;
}
/***************************************************************************
Make a server_info struct. Free with TALLOC_FREE().
***************************************************************************/
static struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
{
struct auth_serversupplied_info *result;
result = TALLOC_ZERO_P(mem_ctx, struct auth_serversupplied_info);
if (result == NULL) {
DEBUG(0, ("talloc failed\n"));
return NULL;
}
talloc_set_destructor(result, server_info_dtor);
/* Initialise the uid and gid values to something non-zero
which may save us from giving away root access if there
is a bug in allocating these fields. */
result->utok.uid = -1;
result->utok.gid = -1;
return result;
}
static char *sanitize_username(TALLOC_CTX *mem_ctx, const char *username)
{
fstring tmp;
alpha_strcpy(tmp, username, ". _-$", sizeof(tmp));
return talloc_strdup(mem_ctx, tmp);
}
/***************************************************************************
Is the incoming username our own machine account ?
If so, the connection is almost certainly from winbindd.
***************************************************************************/
static bool is_our_machine_account(const char *username)
{
bool ret;
char *truncname = NULL;
size_t ulen = strlen(username);
if (ulen == 0 || username[ulen-1] != '$') {
return false;
}
truncname = SMB_STRDUP(username);
if (!truncname) {
return false;
}
truncname[ulen-1] = '\0';
ret = strequal(truncname, global_myname());
SAFE_FREE(truncname);
return ret;
}
/***************************************************************************
Make (and fill) a user_info struct from a struct samu
***************************************************************************/
NTSTATUS make_server_info_sam(struct auth_serversupplied_info **server_info,
struct samu *sampass)
{
struct passwd *pwd;
gid_t *gids;
struct auth_serversupplied_info *result;
const char *username = pdb_get_username(sampass);
NTSTATUS status;
if ( !(result = make_server_info(NULL)) ) {
return NT_STATUS_NO_MEMORY;
}
if ( !(pwd = getpwnam_alloc(result, username)) ) {
DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
pdb_get_username(sampass)));
TALLOC_FREE(result);
return NT_STATUS_NO_SUCH_USER;
}
result->sam_account = sampass;
result->unix_name = pwd->pw_name;
/* Ensure that we keep pwd->pw_name, because we will free pwd below */
talloc_steal(result, pwd->pw_name);
result->utok.gid = pwd->pw_gid;
result->utok.uid = pwd->pw_uid;
TALLOC_FREE(pwd);
result->sanitized_username = sanitize_username(result,
result->unix_name);
if (result->sanitized_username == NULL) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (IS_DC && is_our_machine_account(username)) {
/*
* Ensure for a connection from our own
* machine account (from winbindd on a DC)
* there are no supplementary groups.
* Prevents loops in calling gid_to_sid().
*/
result->sids = NULL;
gids = NULL;
result->num_sids = 0;
/*
* This is a hack of monstrous proportions.
* If we know it's winbindd talking to us,
* we know we must never recurse into it,
* so turn off contacting winbindd for this
* entire process. This will get fixed when
* winbindd doesn't need to talk to smbd on
* a PDC. JRA.
*/
(void)winbind_off();
DEBUG(10, ("make_server_info_sam: our machine account %s "
"setting supplementary group list empty and "
"turning off winbindd requests.\n",
username));
} else {
status = pdb_enum_group_memberships(result, sampass,
&result->sids, &gids,
&result->num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
nt_errstr(status)));
result->sam_account = NULL; /* Don't free on error exit. */
TALLOC_FREE(result);
return status;
}
}
/* For now we throw away the gids and convert via sid_to_gid
* later. This needs fixing, but I'd like to get the code straight and
* simple first. */
TALLOC_FREE(gids);
DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
pdb_get_username(sampass), result->unix_name));
*server_info = result;
/* Ensure that the sampass will be freed with the result */
talloc_steal(result, sampass);
return NT_STATUS_OK;
}
static NTSTATUS log_nt_token(NT_USER_TOKEN *token)
{
TALLOC_CTX *frame = talloc_stackframe();
char *command;
char *group_sidstr;
size_t i;
if ((lp_log_nt_token_command() == NULL) ||
(strlen(lp_log_nt_token_command()) == 0)) {
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
group_sidstr = talloc_strdup(frame, "");
for (i=1; inum_sids; i++) {
group_sidstr = talloc_asprintf(
frame, "%s %s", group_sidstr,
sid_string_talloc(frame, &token->user_sids[i]));
}
command = talloc_string_sub(
frame, lp_log_nt_token_command(),
"%s", sid_string_talloc(frame, &token->user_sids[0]));
command = talloc_string_sub(frame, command, "%t", group_sidstr);
if (command == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
DEBUG(8, ("running command: [%s]\n", command));
if (smbrun(command, NULL) != 0) {
DEBUG(0, ("Could not log NT token\n"));
TALLOC_FREE(frame);
return NT_STATUS_ACCESS_DENIED;
}
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
/*
* Create the token to use from server_info->sam_account and
* server_info->sids (the info3/sam groups). Find the unix gids.
*/
NTSTATUS create_local_token(struct auth_serversupplied_info *server_info)
{
NTSTATUS status;
size_t i;
struct dom_sid tmp_sid;
/*
* If winbind is not around, we can not make much use of the SIDs the
* domain controller provided us with. Likewise if the user name was
* mapped to some local unix user.
*/
if (((lp_server_role() == ROLE_DOMAIN_MEMBER) && !winbind_ping()) ||
(server_info->nss_token)) {
status = create_token_from_username(server_info,
server_info->unix_name,
server_info->guest,
&server_info->utok.uid,
&server_info->utok.gid,
&server_info->unix_name,
&server_info->ptok);
} else {
server_info->ptok = create_local_nt_token(
server_info,
pdb_get_user_sid(server_info->sam_account),
server_info->guest,
server_info->num_sids, server_info->sids);
status = server_info->ptok ?
NT_STATUS_OK : NT_STATUS_NO_SUCH_USER;
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
/* Convert the SIDs to gids. */
server_info->utok.ngroups = 0;
server_info->utok.groups = NULL;
/* Start at index 1, where the groups start. */
for (i=1; iptok->num_sids; i++) {
gid_t gid;
DOM_SID *sid = &server_info->ptok->user_sids[i];
if (!sid_to_gid(sid, &gid)) {
DEBUG(10, ("Could not convert SID %s to gid, "
"ignoring it\n", sid_string_dbg(sid)));
continue;
}
add_gid_to_array_unique(server_info, gid,
&server_info->utok.groups,
&server_info->utok.ngroups);
}
/*
* Add the "Unix Group" SID for each gid to catch mapped groups
* and their Unix equivalent. This is to solve the backwards
* compatibility problem of 'valid users = +ntadmin' where
* ntadmin has been paired with "Domain Admins" in the group
* mapping table. Otherwise smb.conf would need to be changed
* to 'valid user = "Domain Admins"'. --jerry
*
* For consistency we also add the "Unix User" SID,
* so that the complete unix token is represented within
* the nt token.
*/
if (!uid_to_unix_users_sid(server_info->utok.uid, &tmp_sid)) {
DEBUG(1,("create_local_token: Failed to create SID "
"for uid %u!\n", (unsigned int)server_info->utok.uid));
}
add_sid_to_array_unique(server_info->ptok, &tmp_sid,
&server_info->ptok->user_sids,
&server_info->ptok->num_sids);
for ( i=0; iutok.ngroups; i++ ) {
if (!gid_to_unix_groups_sid( server_info->utok.groups[i], &tmp_sid ) ) {
DEBUG(1,("create_local_token: Failed to create SID "
"for gid %u!\n", (unsigned int)server_info->utok.groups[i]));
continue;
}
add_sid_to_array_unique(server_info->ptok, &tmp_sid,
&server_info->ptok->user_sids,
&server_info->ptok->num_sids);
}
debug_nt_user_token(DBGC_AUTH, 10, server_info->ptok);
debug_unix_user_token(DBGC_AUTH, 10,
server_info->utok.uid,
server_info->utok.gid,
server_info->utok.ngroups,
server_info->utok.groups);
status = log_nt_token(server_info->ptok);
return status;
}
/*
* Create an artificial NT token given just a username. (Initially intended
* for force user)
*
* We go through lookup_name() to avoid problems we had with 'winbind use
* default domain'.
*
* We have 3 cases:
*
* unmapped unix users: Go directly to nss to find the user's group.
*
* A passdb user: The list of groups is provided by pdb_enum_group_memberships.
*
* If the user is provided by winbind, the primary gid is set to "domain
* users" of the user's domain. For an explanation why this is necessary, see
* the thread starting at
* http://lists.samba.org/archive/samba-technical/2006-January/044803.html.
*/
NTSTATUS create_token_from_username(TALLOC_CTX *mem_ctx, const char *username,
bool is_guest,
uid_t *uid, gid_t *gid,
char **found_username,
struct nt_user_token **token)
{
NTSTATUS result = NT_STATUS_NO_SUCH_USER;
TALLOC_CTX *tmp_ctx;
DOM_SID user_sid;
enum lsa_SidType type;
gid_t *gids;
DOM_SID *group_sids;
DOM_SID unix_group_sid;
size_t num_group_sids;
size_t num_gids;
size_t i;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(0, ("talloc_new failed\n"));
return NT_STATUS_NO_MEMORY;
}
if (!lookup_name_smbconf(tmp_ctx, username, LOOKUP_NAME_ALL,
NULL, NULL, &user_sid, &type)) {
DEBUG(1, ("lookup_name_smbconf for %s failed\n", username));
goto done;
}
if (type != SID_NAME_USER) {
DEBUG(1, ("%s is a %s, not a user\n", username,
sid_type_lookup(type)));
goto done;
}
if (sid_check_is_in_our_domain(&user_sid)) {
bool ret;
/* This is a passdb user, so ask passdb */
struct samu *sam_acct = NULL;
if ( !(sam_acct = samu_new( tmp_ctx )) ) {
result = NT_STATUS_NO_MEMORY;
goto done;
}
become_root();
ret = pdb_getsampwsid(sam_acct, &user_sid);
unbecome_root();
if (!ret) {
DEBUG(1, ("pdb_getsampwsid(%s) for user %s failed\n",
sid_string_dbg(&user_sid), username));
DEBUGADD(1, ("Fall back to unix user %s\n", username));
goto unix_user;
}
result = pdb_enum_group_memberships(tmp_ctx, sam_acct,
&group_sids, &gids,
&num_group_sids);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(1, ("enum_group_memberships failed for %s (%s): "
"%s\n", username, sid_string_dbg(&user_sid),
nt_errstr(result)));
DEBUGADD(1, ("Fall back to unix user %s\n", username));
goto unix_user;
}
/* see the smb_panic() in pdb_default_enum_group_memberships */
SMB_ASSERT(num_group_sids > 0);
*gid = gids[0];
/* Ensure we're returning the found_username on the right context. */
*found_username = talloc_strdup(mem_ctx,
pdb_get_username(sam_acct));
/*
* If the SID from lookup_name() was the guest sid, passdb knows
* about the mapping of guest sid to lp_guestaccount()
* username and will return the unix_pw info for a guest
* user. Use it if it's there, else lookup the *uid details
* using getpwnam_alloc(). See bug #6291 for details. JRA.
*/
/* We must always assign the *uid. */
if (sam_acct->unix_pw == NULL) {
struct passwd *pwd = getpwnam_alloc(sam_acct, *found_username );
if (!pwd) {
DEBUG(10, ("getpwnam_alloc failed for %s\n",
*found_username));
result = NT_STATUS_NO_SUCH_USER;
goto done;
}
result = samu_set_unix(sam_acct, pwd );
if (!NT_STATUS_IS_OK(result)) {
DEBUG(10, ("samu_set_unix failed for %s\n",
*found_username));
result = NT_STATUS_NO_SUCH_USER;
goto done;
}
}
*uid = sam_acct->unix_pw->pw_uid;
} else if (sid_check_is_in_unix_users(&user_sid)) {
/* This is a unix user not in passdb. We need to ask nss
* directly, without consulting passdb */
struct passwd *pass;
/*
* This goto target is used as a fallback for the passdb
* case. The concrete bug report is when passdb gave us an
* unmapped gid.
*/
unix_user:
if (!sid_to_uid(&user_sid, uid)) {
DEBUG(1, ("unix_user case, sid_to_uid for %s (%s) failed\n",
username, sid_string_dbg(&user_sid)));
result = NT_STATUS_NO_SUCH_USER;
goto done;
}
uid_to_unix_users_sid(*uid, &user_sid);
pass = getpwuid_alloc(tmp_ctx, *uid);
if (pass == NULL) {
DEBUG(1, ("getpwuid(%u) for user %s failed\n",
(unsigned int)*uid, username));
goto done;
}
if (!getgroups_unix_user(tmp_ctx, username, pass->pw_gid,
&gids, &num_group_sids)) {
DEBUG(1, ("getgroups_unix_user for user %s failed\n",
username));
goto done;
}
if (num_group_sids) {
group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
if (group_sids == NULL) {
DEBUG(1, ("TALLOC_ARRAY failed\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
}
} else {
group_sids = NULL;
}
for (i=0; i 0);
*gid = gids[0];
/* Ensure we're returning the found_username on the right context. */
*found_username = talloc_strdup(mem_ctx, pass->pw_name);
} else {
/* This user is from winbind, force the primary gid to the
* user's "domain users" group. Under certain circumstances
* (user comes from NT4), this might be a loss of
* information. But we can not rely on winbind getting the
* correct info. AD might prohibit winbind looking up that
* information. */
uint32 dummy;
/* We must always assign the *uid. */
if (!sid_to_uid(&user_sid, uid)) {
DEBUG(1, ("winbindd case, sid_to_uid for %s (%s) failed\n",
username, sid_string_dbg(&user_sid)));
result = NT_STATUS_NO_SUCH_USER;
goto done;
}
num_group_sids = 1;
group_sids = TALLOC_ARRAY(tmp_ctx, DOM_SID, num_group_sids);
if (group_sids == NULL) {
DEBUG(1, ("TALLOC_ARRAY failed\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
}
sid_copy(&group_sids[0], &user_sid);
sid_split_rid(&group_sids[0], &dummy);
sid_append_rid(&group_sids[0], DOMAIN_GROUP_RID_USERS);
if (!sid_to_gid(&group_sids[0], gid)) {
DEBUG(1, ("sid_to_gid(%s) failed\n",
sid_string_dbg(&group_sids[0])));
goto done;
}
gids = gid;
/* Ensure we're returning the found_username on the right context. */
*found_username = talloc_strdup(mem_ctx, username);
}
/* Add the "Unix Group" SID for each gid to catch mapped groups
and their Unix equivalent. This is to solve the backwards
compatibility problem of 'valid users = +ntadmin' where
ntadmin has been paired with "Domain Admins" in the group
mapping table. Otherwise smb.conf would need to be changed
to 'valid user = "Domain Admins"'. --jerry */
num_gids = num_group_sids;
for ( i=0; i= low) && (gids[i] <= high) )
continue;
if ( !gid_to_unix_groups_sid( gids[i], &unix_group_sid ) ) {
DEBUG(1,("create_token_from_username: Failed to create SID "
"for gid %u!\n", (unsigned int)gids[i]));
continue;
}
result = add_sid_to_array_unique(tmp_ctx, &unix_group_sid,
&group_sids, &num_group_sids);
if (!NT_STATUS_IS_OK(result)) {
goto done;
}
}
/* Ensure we're creating the nt_token on the right context. */
*token = create_local_nt_token(mem_ctx, &user_sid,
is_guest, num_group_sids, group_sids);
if ((*token == NULL) || (*found_username == NULL)) {
result = NT_STATUS_NO_MEMORY;
goto done;
}
result = NT_STATUS_OK;
done:
TALLOC_FREE(tmp_ctx);
return result;
}
/***************************************************************************
Build upon create_token_from_username:
Expensive helper function to figure out whether a user given its name is
member of a particular group.
***************************************************************************/
bool user_in_group_sid(const char *username, const DOM_SID *group_sid)
{
NTSTATUS status;
uid_t uid;
gid_t gid;
char *found_username;
struct nt_user_token *token;
bool result;
TALLOC_CTX *mem_ctx;
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
DEBUG(0, ("talloc_new failed\n"));
return False;
}
status = create_token_from_username(mem_ctx, username, False,
&uid, &gid, &found_username,
&token);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("could not create token for %s\n", username));
return False;
}
result = nt_token_check_sid(group_sid, token);
TALLOC_FREE(mem_ctx);
return result;
}
bool user_in_group(const char *username, const char *groupname)
{
TALLOC_CTX *mem_ctx;
DOM_SID group_sid;
bool ret;
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
DEBUG(0, ("talloc_new failed\n"));
return False;
}
ret = lookup_name(mem_ctx, groupname, LOOKUP_NAME_ALL,
NULL, NULL, &group_sid, NULL);
TALLOC_FREE(mem_ctx);
if (!ret) {
DEBUG(10, ("lookup_name for (%s) failed.\n", groupname));
return False;
}
return user_in_group_sid(username, &group_sid);
}
/***************************************************************************
Make (and fill) a server_info struct from a 'struct passwd' by conversion
to a struct samu
***************************************************************************/
NTSTATUS make_server_info_pw(struct auth_serversupplied_info **server_info,
char *unix_username,
struct passwd *pwd)
{
NTSTATUS status;
struct samu *sampass = NULL;
gid_t *gids;
char *qualified_name = NULL;
TALLOC_CTX *mem_ctx = NULL;
DOM_SID u_sid;
enum lsa_SidType type;
struct auth_serversupplied_info *result;
if ( !(sampass = samu_new( NULL )) ) {
return NT_STATUS_NO_MEMORY;
}
status = samu_set_unix( sampass, pwd );
if (!NT_STATUS_IS_OK(status)) {
return status;
}
result = make_server_info(NULL);
if (result == NULL) {
TALLOC_FREE(sampass);
return NT_STATUS_NO_MEMORY;
}
result->sam_account = sampass;
result->unix_name = talloc_strdup(result, unix_username);
result->sanitized_username = sanitize_username(result, unix_username);
if ((result->unix_name == NULL)
|| (result->sanitized_username == NULL)) {
TALLOC_FREE(sampass);
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
result->utok.uid = pwd->pw_uid;
result->utok.gid = pwd->pw_gid;
status = pdb_enum_group_memberships(result, sampass,
&result->sids, &gids,
&result->num_sids);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("pdb_enum_group_memberships failed: %s\n",
nt_errstr(status)));
TALLOC_FREE(result);
return status;
}
/*
* The SID returned in server_info->sam_account is based
* on our SAM sid even though for a pure UNIX account this should
* not be the case as it doesn't really exist in the SAM db.
* This causes lookups on "[in]valid users" to fail as they
* will lookup this name as a "Unix User" SID to check against
* the user token. Fix this by adding the "Unix User"\unix_username
* SID to the sid array. The correct fix should probably be
* changing the server_info->sam_account user SID to be a
* S-1-22 Unix SID, but this might break old configs where
* plaintext passwords were used with no SAM backend.
*/
mem_ctx = talloc_init("make_server_info_pw_tmp");
if (!mem_ctx) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
unix_users_domain_name(),
unix_username );
if (!qualified_name) {
TALLOC_FREE(result);
TALLOC_FREE(mem_ctx);
return NT_STATUS_NO_MEMORY;
}
if (!lookup_name(mem_ctx, qualified_name, LOOKUP_NAME_ALL,
NULL, NULL,
&u_sid, &type)) {
TALLOC_FREE(result);
TALLOC_FREE(mem_ctx);
return NT_STATUS_NO_SUCH_USER;
}
TALLOC_FREE(mem_ctx);
if (type != SID_NAME_USER) {
TALLOC_FREE(result);
return NT_STATUS_NO_SUCH_USER;
}
status = add_sid_to_array_unique(result, &u_sid,
&result->sids,
&result->num_sids);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(result);
return status;
}
/* For now we throw away the gids and convert via sid_to_gid
* later. This needs fixing, but I'd like to get the code straight and
* simple first. */
TALLOC_FREE(gids);
*server_info = result;
return NT_STATUS_OK;
}
/***************************************************************************
Make (and fill) a user_info struct for a guest login.
This *must* succeed for smbd to start. If there is no mapping entry for
the guest gid, then create one.
***************************************************************************/
static NTSTATUS make_new_server_info_guest(struct auth_serversupplied_info **server_info)
{
NTSTATUS status;
struct samu *sampass = NULL;
DOM_SID guest_sid;
bool ret;
char zeros[16];
fstring tmp;
if ( !(sampass = samu_new( NULL )) ) {
return NT_STATUS_NO_MEMORY;
}
sid_compose(&guest_sid, get_global_sam_sid(), DOMAIN_USER_RID_GUEST);
become_root();
ret = pdb_getsampwsid(sampass, &guest_sid);
unbecome_root();
if (!ret) {
TALLOC_FREE(sampass);
return NT_STATUS_NO_SUCH_USER;
}
status = make_server_info_sam(server_info, sampass);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(sampass);
return status;
}
(*server_info)->guest = True;
status = create_local_token(*server_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("create_local_token failed: %s\n",
nt_errstr(status)));
return status;
}
/* annoying, but the Guest really does have a session key, and it is
all zeros! */
ZERO_STRUCT(zeros);
(*server_info)->user_session_key = data_blob(zeros, sizeof(zeros));
(*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
alpha_strcpy(tmp, pdb_get_username(sampass), ". _-$", sizeof(tmp));
(*server_info)->sanitized_username = talloc_strdup(*server_info, tmp);
return NT_STATUS_OK;
}
/****************************************************************************
Fake a auth_serversupplied_info just from a username
****************************************************************************/
NTSTATUS make_serverinfo_from_username(TALLOC_CTX *mem_ctx,
const char *username,
bool is_guest,
struct auth_serversupplied_info **presult)
{
struct auth_serversupplied_info *result;
struct passwd *pwd;
NTSTATUS status;
pwd = getpwnam_alloc(talloc_tos(), username);
if (pwd == NULL) {
return NT_STATUS_NO_SUCH_USER;
}
status = make_server_info_pw(&result, pwd->pw_name, pwd);
TALLOC_FREE(pwd);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
result->nss_token = true;
result->guest = is_guest;
status = create_local_token(result);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(result);
return status;
}
*presult = result;
return NT_STATUS_OK;
}
struct auth_serversupplied_info *copy_serverinfo(TALLOC_CTX *mem_ctx,
const struct auth_serversupplied_info *src)
{
struct auth_serversupplied_info *dst;
dst = make_server_info(mem_ctx);
if (dst == NULL) {
return NULL;
}
dst->guest = src->guest;
dst->utok.uid = src->utok.uid;
dst->utok.gid = src->utok.gid;
dst->utok.ngroups = src->utok.ngroups;
if (src->utok.ngroups != 0) {
dst->utok.groups = (gid_t *)TALLOC_MEMDUP(
dst, src->utok.groups,
sizeof(gid_t)*dst->utok.ngroups);
} else {
dst->utok.groups = NULL;
}
if (src->ptok) {
dst->ptok = dup_nt_token(dst, src->ptok);
if (!dst->ptok) {
TALLOC_FREE(dst);
return NULL;
}
}
dst->user_session_key = data_blob_talloc( dst, src->user_session_key.data,
src->user_session_key.length);
dst->lm_session_key = data_blob_talloc(dst, src->lm_session_key.data,
src->lm_session_key.length);
dst->sam_account = samu_new(NULL);
if (!dst->sam_account) {
TALLOC_FREE(dst);
return NULL;
}
if (!pdb_copy_sam_account(dst->sam_account, src->sam_account)) {
TALLOC_FREE(dst);
return NULL;
}
dst->pam_handle = NULL;
dst->unix_name = talloc_strdup(dst, src->unix_name);
if (!dst->unix_name) {
TALLOC_FREE(dst);
return NULL;
}
dst->sanitized_username = talloc_strdup(dst, src->sanitized_username);
if (!dst->sanitized_username) {
TALLOC_FREE(dst);
return NULL;
}
return dst;
}
/*
* Set a new session key. Used in the rpc server where we have to override the
* SMB level session key with SystemLibraryDTC
*/
bool server_info_set_session_key(struct auth_serversupplied_info *info,
DATA_BLOB session_key)
{
TALLOC_FREE(info->user_session_key.data);
info->user_session_key = data_blob_talloc(
info, session_key.data, session_key.length);
return (info->user_session_key.data != NULL);
}
static struct auth_serversupplied_info *guest_info = NULL;
bool init_guest_info(void)
{
if (guest_info != NULL)
return True;
return NT_STATUS_IS_OK(make_new_server_info_guest(&guest_info));
}
NTSTATUS make_server_info_guest(TALLOC_CTX *mem_ctx,
struct auth_serversupplied_info **server_info)
{
*server_info = copy_serverinfo(mem_ctx, guest_info);
return (*server_info != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
}
bool copy_current_user(struct current_user *dst, struct current_user *src)
{
gid_t *groups;
NT_USER_TOKEN *nt_token;
groups = (gid_t *)memdup(src->ut.groups,
sizeof(gid_t) * src->ut.ngroups);
if ((src->ut.ngroups != 0) && (groups == NULL)) {
return False;
}
nt_token = dup_nt_token(NULL, src->nt_user_token);
if (nt_token == NULL) {
SAFE_FREE(groups);
return False;
}
dst->conn = src->conn;
dst->vuid = src->vuid;
dst->ut.uid = src->ut.uid;
dst->ut.gid = src->ut.gid;
dst->ut.ngroups = src->ut.ngroups;
dst->ut.groups = groups;
dst->nt_user_token = nt_token;
return True;
}
/***************************************************************************
Purely internal function for make_server_info_info3
Fill the sam account from getpwnam
***************************************************************************/
static NTSTATUS fill_sam_account(TALLOC_CTX *mem_ctx,
const char *domain,
const char *username,
char **found_username,
uid_t *uid, gid_t *gid,
struct samu *account,
bool *username_was_mapped)
{
struct smbd_server_connection *sconn = smbd_server_conn;
NTSTATUS nt_status;
fstring dom_user, lower_username;
fstring real_username;
struct passwd *passwd;
fstrcpy( lower_username, username );
strlower_m( lower_username );
fstr_sprintf(dom_user, "%s%c%s", domain, *lp_winbind_separator(),
lower_username);
/* Get the passwd struct. Try to create the account is necessary. */
*username_was_mapped = map_username(sconn, dom_user);
if ( !(passwd = smb_getpwnam( NULL, dom_user, real_username, True )) )
return NT_STATUS_NO_SUCH_USER;
*uid = passwd->pw_uid;
*gid = passwd->pw_gid;
/* This is pointless -- there is no suport for differing
unix and windows names. Make sure to always store the
one we actually looked up and succeeded. Have I mentioned
why I hate the 'winbind use default domain' parameter?
--jerry */
*found_username = talloc_strdup( mem_ctx, real_username );
DEBUG(5,("fill_sam_account: located username was [%s]\n", *found_username));
nt_status = samu_set_unix( account, passwd );
TALLOC_FREE(passwd);
return nt_status;
}
/****************************************************************************
Wrapper to allow the getpwnam() call to strip the domain name and
try again in case a local UNIX user is already there. Also run through
the username if we fallback to the username only.
****************************************************************************/
struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, char *domuser,
fstring save_username, bool create )
{
struct passwd *pw = NULL;
char *p;
fstring username;
/* we only save a copy of the username it has been mangled
by winbindd use default domain */
save_username[0] = '\0';
/* don't call map_username() here since it has to be done higher
up the stack so we don't call it mutliple times */
fstrcpy( username, domuser );
p = strchr_m( username, *lp_winbind_separator() );
/* code for a DOMAIN\user string */
if ( p ) {
fstring strip_username;
pw = Get_Pwnam_alloc( mem_ctx, domuser );
if ( pw ) {
/* make sure we get the case of the username correct */
/* work around 'winbind use default domain = yes' */
if ( !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) {
char *domain;
/* split the domain and username into 2 strings */
*p = '\0';
domain = username;
fstr_sprintf(save_username, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name);
}
else
fstrcpy( save_username, pw->pw_name );
/* whew -- done! */
return pw;
}
/* setup for lookup of just the username */
/* remember that p and username are overlapping memory */
p++;
fstrcpy( strip_username, p );
fstrcpy( username, strip_username );
}
/* just lookup a plain username */
pw = Get_Pwnam_alloc(mem_ctx, username);
/* Create local user if requested but only if winbindd
is not running. We need to protect against cases
where winbindd is failing and then prematurely
creating users in /etc/passwd */
if ( !pw && create && !winbind_ping() ) {
/* Don't add a machine account. */
if (username[strlen(username)-1] == '$')
return NULL;
_smb_create_user(NULL, username, NULL);
pw = Get_Pwnam_alloc(mem_ctx, username);
}
/* one last check for a valid passwd struct */
if ( pw )
fstrcpy( save_username, pw->pw_name );
return pw;
}
/***************************************************************************
Make a server_info struct from the info3 returned by a domain logon
***************************************************************************/
NTSTATUS make_server_info_info3(TALLOC_CTX *mem_ctx,
const char *sent_nt_username,
const char *domain,
struct auth_serversupplied_info **server_info,
struct netr_SamInfo3 *info3)
{
char zeros[16];
NTSTATUS nt_status = NT_STATUS_OK;
char *found_username = NULL;
const char *nt_domain;
const char *nt_username;
struct samu *sam_account = NULL;
DOM_SID user_sid;
DOM_SID group_sid;
bool username_was_mapped;
uid_t uid = (uid_t)-1;
gid_t gid = (gid_t)-1;
struct auth_serversupplied_info *result;
/*
Here is where we should check the list of
trusted domains, and verify that the SID
matches.
*/
if (!sid_compose(&user_sid, info3->base.domain_sid, info3->base.rid)) {
return NT_STATUS_INVALID_PARAMETER;
}
if (!sid_compose(&group_sid, info3->base.domain_sid,
info3->base.primary_gid)) {
return NT_STATUS_INVALID_PARAMETER;
}
nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
if (!nt_username) {
/* If the server didn't give us one, just use the one we sent
* them */
nt_username = sent_nt_username;
}
nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
if (!nt_domain) {
/* If the server didn't give us one, just use the one we sent
* them */
nt_domain = domain;
}
/* try to fill the SAM account.. If getpwnam() fails, then try the
add user script (2.2.x behavior).
We use the _unmapped_ username here in an attempt to provide
consistent username mapping behavior between kerberos and NTLM[SSP]
authentication in domain mode security. I.E. Username mapping
should be applied to the fully qualified username
(e.g. DOMAIN\user) and not just the login name. Yes this means we
called map_username() unnecessarily in make_user_info_map() but
that is how the current code is designed. Making the change here
is the least disruptive place. -- jerry */
if ( !(sam_account = samu_new( NULL )) ) {
return NT_STATUS_NO_MEMORY;
}
/* this call will try to create the user if necessary */
nt_status = fill_sam_account(mem_ctx, nt_domain, sent_nt_username,
&found_username, &uid, &gid, sam_account,
&username_was_mapped);
/* if we still don't have a valid unix account check for
'map to guest = bad uid' */
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE( sam_account );
if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
make_server_info_guest(NULL, server_info);
return NT_STATUS_OK;
}
return nt_status;
}
if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_UNSUCCESSFUL;
}
if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_UNSUCCESSFUL;
}
if (!pdb_set_fullname(sam_account,
info3->base.full_name.string,
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_logon_script(sam_account,
info3->base.logon_script.string,
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_profile_path(sam_account,
info3->base.profile_path.string,
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_homedir(sam_account,
info3->base.home_directory.string,
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_dir_drive(sam_account,
info3->base.home_drive.string,
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_acct_ctrl(sam_account, info3->base.acct_flags, PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_last_set_time(
sam_account,
nt_time_to_unix(info3->base.last_password_change),
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_can_change_time(
sam_account,
nt_time_to_unix(info3->base.allow_password_change),
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_must_change_time(
sam_account,
nt_time_to_unix(info3->base.force_password_change),
PDB_CHANGED)) {
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
result = make_server_info(NULL);
if (result == NULL) {
DEBUG(4, ("make_server_info failed!\n"));
TALLOC_FREE(sam_account);
return NT_STATUS_NO_MEMORY;
}
/* save this here to _net_sam_logon() doesn't fail (it assumes a
valid struct samu) */
result->sam_account = sam_account;
result->unix_name = talloc_strdup(result, found_username);
result->sanitized_username = sanitize_username(result,
result->unix_name);
if (result->sanitized_username == NULL) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* Fill in the unix info we found on the way */
result->utok.uid = uid;
result->utok.gid = gid;
/* Create a 'combined' list of all SIDs we might want in the SD */
result->num_sids = 0;
result->sids = NULL;
nt_status = sid_array_from_info3(result, info3,
&result->sids,
&result->num_sids,
false, false);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(result);
return nt_status;
}
/* Ensure the primary group sid is at position 0. */
sort_sid_array_for_smbd(result, &group_sid);
result->login_server = talloc_strdup(result,
info3->base.logon_server.string);
/* ensure we are never given NULL session keys */
ZERO_STRUCT(zeros);
if (memcmp(info3->base.key.key, zeros, sizeof(zeros)) == 0) {
result->user_session_key = data_blob_null;
} else {
result->user_session_key = data_blob_talloc(
result, info3->base.key.key,
sizeof(info3->base.key.key));
}
if (memcmp(info3->base.LMSessKey.key, zeros, 8) == 0) {
result->lm_session_key = data_blob_null;
} else {
result->lm_session_key = data_blob_talloc(
result, info3->base.LMSessKey.key,
sizeof(info3->base.LMSessKey.key));
}
result->nss_token |= username_was_mapped;
*server_info = result;
return NT_STATUS_OK;
}
/*****************************************************************************
Make a server_info struct from the wbcAuthUserInfo returned by a domain logon
******************************************************************************/
NTSTATUS make_server_info_wbcAuthUserInfo(TALLOC_CTX *mem_ctx,
const char *sent_nt_username,
const char *domain,
const struct wbcAuthUserInfo *info,
struct auth_serversupplied_info **server_info)
{
char zeros[16];
NTSTATUS nt_status = NT_STATUS_OK;
char *found_username = NULL;
const char *nt_domain;
const char *nt_username;
struct samu *sam_account = NULL;
DOM_SID user_sid;
DOM_SID group_sid;
bool username_was_mapped;
uint32_t i;
uid_t uid = (uid_t)-1;
gid_t gid = (gid_t)-1;
struct auth_serversupplied_info *result;
result = make_server_info(NULL);
if (result == NULL) {
DEBUG(4, ("make_server_info failed!\n"));
return NT_STATUS_NO_MEMORY;
}
/*
Here is where we should check the list of
trusted domains, and verify that the SID
matches.
*/
memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));
if (info->account_name) {
nt_username = talloc_strdup(result, info->account_name);
} else {
/* If the server didn't give us one, just use the one we sent
* them */
nt_username = talloc_strdup(result, sent_nt_username);
}
if (!nt_username) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (info->domain_name) {
nt_domain = talloc_strdup(result, info->domain_name);
} else {
/* If the server didn't give us one, just use the one we sent
* them */
nt_domain = talloc_strdup(result, domain);
}
if (!nt_domain) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* try to fill the SAM account.. If getpwnam() fails, then try the
add user script (2.2.x behavior).
We use the _unmapped_ username here in an attempt to provide
consistent username mapping behavior between kerberos and NTLM[SSP]
authentication in domain mode security. I.E. Username mapping
should be applied to the fully qualified username
(e.g. DOMAIN\user) and not just the login name. Yes this means we
called map_username() unnecessarily in make_user_info_map() but
that is how the current code is designed. Making the change here
is the least disruptive place. -- jerry */
if ( !(sam_account = samu_new( result )) ) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* this call will try to create the user if necessary */
nt_status = fill_sam_account(result, nt_domain, sent_nt_username,
&found_username, &uid, &gid, sam_account,
&username_was_mapped);
/* if we still don't have a valid unix account check for
'map to guest = bad uid' */
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE( result );
if ( lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID ) {
make_server_info_guest(NULL, server_info);
return NT_STATUS_OK;
}
return nt_status;
}
if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_UNSUCCESSFUL;
}
if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_UNSUCCESSFUL;
}
if (!pdb_set_fullname(sam_account, info->full_name, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_logon_script(sam_account, info->logon_script, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_profile_path(sam_account, info->profile_path, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_homedir(sam_account, info->home_directory, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_dir_drive(sam_account, info->home_drive, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_acct_ctrl(sam_account, info->acct_flags, PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_last_set_time(
sam_account,
nt_time_to_unix(info->pass_last_set_time),
PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_can_change_time(
sam_account,
nt_time_to_unix(info->pass_can_change_time),
PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
if (!pdb_set_pass_must_change_time(
sam_account,
nt_time_to_unix(info->pass_must_change_time),
PDB_CHANGED)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* save this here to _net_sam_logon() doesn't fail (it assumes a
valid struct samu) */
result->sam_account = sam_account;
result->unix_name = talloc_strdup(result, found_username);
result->sanitized_username = sanitize_username(result,
result->unix_name);
result->login_server = talloc_strdup(result, info->logon_server);
if ((result->unix_name == NULL)
|| (result->sanitized_username == NULL)
|| (result->login_server == NULL)) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
/* Fill in the unix info we found on the way */
result->utok.uid = uid;
result->utok.gid = gid;
/* Create a 'combined' list of all SIDs we might want in the SD */
result->num_sids = info->num_sids - 2;
result->sids = talloc_array(result, DOM_SID, result->num_sids);
if (result->sids == NULL) {
TALLOC_FREE(result);
return NT_STATUS_NO_MEMORY;
}
for (i=0; i < result->num_sids; i++) {
memcpy(&result->sids[i], &info->sids[i+2].sid, sizeof(result->sids[i]));
}
/* Ensure the primary group sid is at position 0. */
sort_sid_array_for_smbd(result, &group_sid);
/* ensure we are never given NULL session keys */
ZERO_STRUCT(zeros);
if (memcmp(info->user_session_key, zeros, sizeof(zeros)) == 0) {
result->user_session_key = data_blob_null;
} else {
result->user_session_key = data_blob_talloc(
result, info->user_session_key,
sizeof(info->user_session_key));
}
if (memcmp(info->lm_session_key, zeros, 8) == 0) {
result->lm_session_key = data_blob_null;
} else {
result->lm_session_key = data_blob_talloc(
result, info->lm_session_key,
sizeof(info->lm_session_key));
}
result->nss_token |= username_was_mapped;
*server_info = result;
return NT_STATUS_OK;
}
/***************************************************************************
Free a user_info struct
***************************************************************************/
void free_user_info(struct auth_usersupplied_info **user_info)
{
DEBUG(5,("attempting to free (and zero) a user_info structure\n"));
if (*user_info != NULL) {
if ((*user_info)->smb_name) {
DEBUG(10,("structure was created for %s\n",
(*user_info)->smb_name));
}
SAFE_FREE((*user_info)->smb_name);
SAFE_FREE((*user_info)->internal_username);
SAFE_FREE((*user_info)->client_domain);
SAFE_FREE((*user_info)->domain);
SAFE_FREE((*user_info)->wksta_name);
data_blob_free(&(*user_info)->lm_resp);
data_blob_free(&(*user_info)->nt_resp);
data_blob_clear_free(&(*user_info)->lm_interactive_pwd);
data_blob_clear_free(&(*user_info)->nt_interactive_pwd);
data_blob_clear_free(&(*user_info)->plaintext_password);
ZERO_STRUCT(**user_info);
}
SAFE_FREE(*user_info);
}
/***************************************************************************
Make an auth_methods struct
***************************************************************************/
bool make_auth_methods(struct auth_context *auth_context, auth_methods **auth_method)
{
if (!auth_context) {
smb_panic("no auth_context supplied to "
"make_auth_methods()!\n");
}
if (!auth_method) {
smb_panic("make_auth_methods: pointer to auth_method pointer "
"is NULL!\n");
}
*auth_method = TALLOC_P(auth_context->mem_ctx, auth_methods);
if (!*auth_method) {
DEBUG(0,("make_auth_method: malloc failed!\n"));
return False;
}
ZERO_STRUCTP(*auth_method);
return True;
}
/**
* Verify whether or not given domain is trusted.
*
* @param domain_name name of the domain to be verified
* @return true if domain is one of the trusted ones or
* false if otherwise
**/
bool is_trusted_domain(const char* dom_name)
{
DOM_SID trustdom_sid;
bool ret;
/* no trusted domains for a standalone server */
if ( lp_server_role() == ROLE_STANDALONE )
return False;
if (dom_name == NULL || dom_name[0] == '\0') {
return false;
}
if (strequal(dom_name, get_global_sam_name())) {
return false;
}
/* if we are a DC, then check for a direct trust relationships */
if ( IS_DC ) {
become_root();
DEBUG (5,("is_trusted_domain: Checking for domain trust with "
"[%s]\n", dom_name ));
ret = pdb_get_trusteddom_pw(dom_name, NULL, NULL, NULL);
unbecome_root();
if (ret)
return True;
}
else {
wbcErr result;
/* If winbind is around, ask it */
result = wb_is_trusted_domain(dom_name);
if (result == WBC_ERR_SUCCESS) {
return True;
}
if (result == WBC_ERR_DOMAIN_NOT_FOUND) {
/* winbind could not find the domain */
return False;
}
/* The only other possible result is that winbind is not up
and running. We need to update the trustdom_cache
ourselves */
update_trustdom_cache();
}
/* now the trustdom cache should be available a DC could still
* have a transitive trust so fall back to the cache of trusted
* domains (like a domain member would use */
if ( trustdom_cache_fetch(dom_name, &trustdom_sid) ) {
return True;
}
return False;
}