-/*
+/*
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
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
#include "includes.h"
-extern fstring remote_machine;
-extern pstring global_myname;
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+extern DOM_SID global_sid_World;
+extern DOM_SID global_sid_Network;
+extern DOM_SID global_sid_Builtin_Guests;
+extern DOM_SID global_sid_Authenticated_Users;
+
/****************************************************************************
Create a UNIX user on demand.
****************************************************************************/
-static int smb_create_user(const char *unix_user, const char *homedir)
+static int smb_create_user(const char *domain, const char *unix_username, const char *homedir)
{
pstring add_script;
int ret;
pstrcpy(add_script, lp_adduser_script());
if (! *add_script)
return -1;
- all_string_sub(add_script, "%u", unix_user, sizeof(pstring));
+ all_string_sub(add_script, "%u", unix_username, sizeof(pstring));
+ if (domain)
+ all_string_sub(add_script, "%D", domain, sizeof(pstring));
if (homedir)
all_string_sub(add_script, "%H", homedir, sizeof(pstring));
ret = smbrun(add_script,NULL);
}
/****************************************************************************
- Delete a UNIX user on demand.
+ Add and Delete UNIX users on demand, based on NTSTATUS codes.
+ We don't care about RID's here so ignore.
****************************************************************************/
-int smb_delete_user(const char *unix_user)
+void auth_add_user_script(const char *domain, const char *username)
{
- pstring del_script;
- int ret;
-
- pstrcpy(del_script, lp_deluser_script());
- if (! *del_script)
- return -1;
- all_string_sub(del_script, "%u", unix_user, sizeof(pstring));
- ret = smbrun(del_script,NULL);
- DEBUG(3,("smb_delete_user: Running the command `%s' gave %d\n",del_script,ret));
- return ret;
+ uint32 rid;
+ /*
+ * User validated ok against Domain controller.
+ * If the admin wants us to try and create a UNIX
+ * user on the fly, do so.
+ */
+
+ if ( *lp_adduser_script() )
+ smb_create_user(domain, username, NULL);
+ else {
+ DEBUG(10,("auth_add_user_script: no 'add user script'. Asking winbindd\n"));
+
+ /* should never get here is we a re a domain member running winbindd
+ However, a host set for 'security = server' might run winbindd for
+ account allocation */
+
+ if ( !winbind_create_user(username, NULL) ) {
+ DEBUG(5,("auth_add_user_script: winbindd_create_user() failed\n"));
+ rid = 0;
+ }
+ }
}
/****************************************************************************
- Add and Delete UNIX users on demand, based on NTSTATUS codes.
+ Create a SAM_ACCOUNT - either by looking in the pdb, or by faking it up from
+ unix info.
****************************************************************************/
-void smb_user_control(const auth_usersupplied_info *user_info, auth_serversupplied_info *server_info, NTSTATUS nt_status)
+NTSTATUS auth_get_sam_account(const char *user, SAM_ACCOUNT **account)
{
- struct passwd *pwd=NULL;
+ BOOL pdb_ret;
+ NTSTATUS nt_status;
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(account))) {
+ return nt_status;
+ }
+
+ become_root();
+ pdb_ret = pdb_getsampwnam(*account, user);
+ unbecome_root();
- if (NT_STATUS_IS_OK(nt_status)) {
+ if (!pdb_ret) {
+
+ struct passwd *pass = Get_Pwnam(user);
+ if (!pass)
+ return NT_STATUS_NO_SUCH_USER;
- if (!(server_info->sam_fill_level & SAM_FILL_UNIX)) {
-
- /*
- * User validated ok against Domain controller.
- * If the admin wants us to try and create a UNIX
- * user on the fly, do so.
- */
-
- if(lp_adduser_script() && !(pwd = Get_Pwnam(user_info->internal_username.str))) {
- smb_create_user(user_info->internal_username.str, NULL);
- }
- }
- } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
- /*
- * User failed to validate ok against Domain controller.
- * If the failure was "user doesn't exist" and admin
- * wants us to try and delete that UNIX user on the fly,
- * do so.
- */
- if (lp_deluser_script()) {
- smb_delete_user(user_info->internal_username.str);
+ if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*account, pass))) {
+ return nt_status;
}
}
+ return NT_STATUS_OK;
}
/****************************************************************************
Create an auth_usersupplied_data structure
****************************************************************************/
-static BOOL make_user_info(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 plaintext,
- uint32 auth_flags, BOOL encrypted)
+static NTSTATUS make_user_info(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 plaintext,
+ uint32 auth_flags, BOOL encrypted)
{
DEBUG(5,("attempting to make a user_info for %s (%s)\n", internal_username, smb_name));
*user_info = malloc(sizeof(**user_info));
if (!user_info) {
- DEBUG(0,("malloc failed for user_info (size %d)\n", sizeof(*user_info)));
- return False;
+ 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,("makeing strings for %s's user_info struct\n", internal_username));
+ DEBUG(5,("making strings for %s's user_info struct\n", internal_username));
(*user_info)->smb_name.str = strdup(smb_name);
if ((*user_info)->smb_name.str) {
(*user_info)->smb_name.len = strlen(smb_name);
} else {
free_user_info(user_info);
- return False;
+ return NT_STATUS_NO_MEMORY;
}
(*user_info)->internal_username.str = strdup(internal_username);
(*user_info)->internal_username.len = strlen(internal_username);
} else {
free_user_info(user_info);
- return False;
+ return NT_STATUS_NO_MEMORY;
}
(*user_info)->domain.str = strdup(domain);
(*user_info)->domain.len = strlen(domain);
} else {
free_user_info(user_info);
- return False;
+ return NT_STATUS_NO_MEMORY;
}
(*user_info)->client_domain.str = strdup(client_domain);
(*user_info)->client_domain.len = strlen(client_domain);
} else {
free_user_info(user_info);
- return False;
+ return NT_STATUS_NO_MEMORY;
}
(*user_info)->wksta_name.str = strdup(wksta_name);
(*user_info)->wksta_name.len = strlen(wksta_name);
} else {
free_user_info(user_info);
- return False;
+ return NT_STATUS_NO_MEMORY;
}
- DEBUG(5,("makeing blobs for %s's user_info struct\n", internal_username));
+ DEBUG(5,("making blobs for %s's user_info struct\n", internal_username));
(*user_info)->lm_resp = data_blob(lm_pwd.data, lm_pwd.length);
(*user_info)->nt_resp = data_blob(nt_pwd.data, nt_pwd.length);
DEBUG(10,("made an %sencrypted user_info for %s (%s)\n", encrypted ? "":"un" , internal_username, smb_name));
- return True;
+ return NT_STATUS_OK;
}
/****************************************************************************
Create an auth_usersupplied_data structure after appropriate mapping.
****************************************************************************/
-BOOL make_user_info_map(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 plaintext,
- uint32 ntlmssp_flags, BOOL encrypted)
+NTSTATUS make_user_info_map(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 plaintext,
+ uint32 ntlmssp_flags, BOOL encrypted)
{
const char *domain;
fstring internal_username;
fstrcpy(internal_username, smb_name);
map_username(internal_username);
- if (lp_allow_trusted_domains()) {
- /* the client could have given us a workstation name
- or other crap for the workgroup - we really need a
- way of telling if this domain name is one of our
- trusted domain names
-
- The way I do it here is by checking if the fully
- qualified username exists. This is rather reliant
- on winbind, but until we have a better method this
- will have to do
- */
+ DEBUG(5, ("make_user_info_map: Mapping user [%s]\\[%s] from workstation [%s]\n",
+ client_domain, smb_name, wksta_name));
+
+ /* don't allow "" as a domain, fixes a Win9X bug
+ where it doens't supply a domain for logon script
+ 'net use' commands. */
+ if ( *client_domain )
domain = client_domain;
-
- if ((smb_name) && (*smb_name)) { /* Don't do this for guests */
- char *user;
- asprintf(&user, "%s%s%s",
- client_domain, lp_winbind_separator(),
- smb_name);
- if (Get_Pwnam(user) == NULL) {
- domain = lp_workgroup();
- }
- free(user);
- }
- } else {
+ else
domain = lp_workgroup();
- }
+
+ /* do what win2k does. Always map unknown domains to our own
+ and let the "passdb backend" handle unknown users. */
+
+ if ( !is_trusted_domain(domain) && !strequal(domain, get_global_sam_name()) )
+ domain = get_default_sam_name();
- return make_user_info(user_info,
- smb_name, internal_username,
- client_domain, domain,
- wksta_name,
- lm_pwd, nt_pwd,
- plaintext,
- ntlmssp_flags, encrypted);
+ /* we know that it is a trusted domain (and we are allowing them) or it is our domain */
+ return make_user_info(user_info, smb_name, internal_username,
+ client_domain, domain, wksta_name, lm_pwd, nt_pwd,
+ plaintext, ntlmssp_flags, encrypted);
}
/****************************************************************************
const uchar *nt_network_pwd, int nt_pwd_len)
{
BOOL ret;
+ NTSTATUS nt_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);
DATA_BLOB plaintext_blob = data_blob(NULL, 0);
auth_flags |= AUTH_FLAG_NTLMv2_RESP;
}
- ret = make_user_info_map(user_info,
- smb_name, client_domain,
- wksta_name,
- lm_blob, nt_blob,
- plaintext_blob,
- auth_flags, True);
+ nt_status = make_user_info_map(user_info,
+ smb_name, client_domain,
+ wksta_name,
+ lm_blob, nt_blob,
+ plaintext_blob,
+ auth_flags, True);
+
+ ret = NT_STATUS_IS_OK(nt_status) ? True : False;
data_blob_free(&lm_blob);
data_blob_free(&nt_blob);
SMBOWFencrypt((const unsigned char *)lm_pwd, chal, local_lm_response);
SMBOWFencrypt((const unsigned char *)nt_pwd, chal, local_nt_response);
- /* Password info parinoia */
+ /* Password info paranoia */
ZERO_STRUCT(lm_pwd);
ZERO_STRUCT(nt_pwd);
ZERO_STRUCT(key);
{
BOOL ret;
+ NTSTATUS nt_status;
DATA_BLOB local_lm_blob = data_blob(local_lm_response, sizeof(local_lm_response));
DATA_BLOB local_nt_blob = data_blob(local_nt_response, sizeof(local_nt_response));
DATA_BLOB plaintext_blob = data_blob(NULL, 0);
if (nt_interactive_pwd)
auth_flags |= AUTH_FLAG_NTLM_RESP;
- ret = make_user_info_map(user_info,
- smb_name, client_domain,
- wksta_name,
- local_lm_blob,
- local_nt_blob,
- plaintext_blob,
- auth_flags, True);
+ nt_status = make_user_info_map(user_info,
+ smb_name, client_domain,
+ wksta_name,
+ local_lm_blob,
+ local_nt_blob,
+ plaintext_blob,
+ auth_flags, True);
+ ret = NT_STATUS_IS_OK(nt_status) ? True : False;
data_blob_free(&local_lm_blob);
data_blob_free(&local_nt_blob);
return ret;
DATA_BLOB local_lm_blob;
DATA_BLOB local_nt_blob;
- BOOL ret = False;
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
uint32 auth_flags = AUTH_FLAG_NONE;
/*
dump_data(100, plaintext_password.data, plaintext_password.length);
#endif
- SMBencrypt( (const uchar *)plaintext_password.data, (const uchar*)chal, local_lm_response);
+ 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
}
ret = make_user_info_map(user_info, smb_name,
- client_domain,
- remote_machine,
- local_lm_blob,
- local_nt_blob,
- plaintext_password,
- auth_flags, False);
+ client_domain,
+ get_remote_machine_name(),
+ local_lm_blob,
+ local_nt_blob,
+ plaintext_password,
+ auth_flags, False);
data_blob_free(&local_lm_blob);
- return ret;
+ return NT_STATUS_IS_OK(ret) ? True : False;
}
/****************************************************************************
Create an auth_usersupplied_data structure
****************************************************************************/
-BOOL make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
- const char *smb_name,
- const char *client_domain,
- DATA_BLOB lm_resp, DATA_BLOB nt_resp)
+NTSTATUS make_user_info_for_reply_enc(auth_usersupplied_info **user_info,
+ const char *smb_name,
+ const char *client_domain,
+ DATA_BLOB lm_resp, DATA_BLOB nt_resp)
{
uint32 auth_flags = AUTH_FLAG_NONE;
return make_user_info_map(user_info, smb_name,
client_domain,
- remote_machine,
+ get_remote_machine_name(),
lm_resp,
nt_resp,
no_plaintext_blob,
DATA_BLOB nt_blob = data_blob(NULL, 0);
DATA_BLOB plaintext_blob = data_blob(NULL, 0);
uint32 auth_flags = AUTH_FLAG_NONE;
+ NTSTATUS nt_status;
- return make_user_info(user_info,
+ nt_status = make_user_info(user_info,
"","",
"","",
"",
nt_blob, lm_blob,
plaintext_blob,
auth_flags, True);
+
+ return NT_STATUS_IS_OK(nt_status) ? True : False;
+}
+
+/****************************************************************************
+ prints a NT_USER_TOKEN to debug output.
+****************************************************************************/
+
+void debug_nt_user_token(int dbg_class, int dbg_lev, NT_USER_TOKEN *token)
+{
+ fstring sid_str;
+ size_t i;
+
+ if (!token) {
+ DEBUGC(dbg_class, dbg_lev, ("NT user token: (NULL)\n"));
+ return;
+ }
+
+ DEBUGC(dbg_class, dbg_lev, ("NT user token of user %s\n",
+ sid_to_string(sid_str, &token->user_sids[0]) ));
+ DEBUGADDC(dbg_class, dbg_lev, ("contains %lu SIDs\n", (unsigned long)token->num_sids));
+ for (i = 0; i < token->num_sids; i++)
+ DEBUGADDC(dbg_class, dbg_lev, ("SID[%3lu]: %s\n", (unsigned long)i,
+ sid_to_string(sid_str, &token->user_sids[i])));
+}
+
+/****************************************************************************
+ prints a UNIX 'token' to debug output.
+****************************************************************************/
+
+void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, int n_groups, gid_t *groups)
+{
+ int i;
+ DEBUGC(dbg_class, dbg_lev, ("UNIX token of user %ld\n", (long int)uid));
+
+ DEBUGADDC(dbg_class, dbg_lev, ("Primary group is %ld and contains %i supplementary groups\n", (long int)gid, n_groups));
+ for (i = 0; i < n_groups; i++)
+ DEBUGADDC(dbg_class, dbg_lev, ("Group[%3i]: %ld\n", i,
+ (long int)groups[i]));
+}
+
+/****************************************************************************
+ Create the SID list for this user.
+****************************************************************************/
+
+static NTSTATUS create_nt_user_token(const DOM_SID *user_sid, const DOM_SID *group_sid,
+ int n_groupSIDs, DOM_SID *groupSIDs,
+ BOOL is_guest, NT_USER_TOKEN **token)
+{
+ NTSTATUS nt_status = NT_STATUS_OK;
+ NT_USER_TOKEN *ptoken;
+ int i;
+ int sid_ndx;
+
+ if ((ptoken = malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) {
+ DEBUG(0, ("create_nt_token: Out of memory allocating token\n"));
+ nt_status = NT_STATUS_NO_MEMORY;
+ return nt_status;
+ }
+
+ ZERO_STRUCTP(ptoken);
+
+ ptoken->num_sids = n_groupSIDs + 5;
+
+ if ((ptoken->user_sids = (DOM_SID *)malloc( sizeof(DOM_SID) * ptoken->num_sids )) == NULL) {
+ DEBUG(0, ("create_nt_token: Out of memory allocating SIDs\n"));
+ nt_status = NT_STATUS_NO_MEMORY;
+ return nt_status;
+ }
+
+ memset((char*)ptoken->user_sids,0,sizeof(DOM_SID) * ptoken->num_sids);
+
+ /*
+ * Note - user SID *MUST* be first in token !
+ * se_access_check depends on this.
+ *
+ * Primary group SID is second in token. Convention.
+ */
+
+ sid_copy(&ptoken->user_sids[PRIMARY_USER_SID_INDEX], user_sid);
+ if (group_sid)
+ sid_copy(&ptoken->user_sids[PRIMARY_GROUP_SID_INDEX], group_sid);
+
+ /*
+ * Finally add the "standard" SIDs.
+ * The only difference between guest and "anonymous" (which we
+ * don't really support) is the addition of Authenticated_Users.
+ */
+
+ sid_copy(&ptoken->user_sids[2], &global_sid_World);
+ sid_copy(&ptoken->user_sids[3], &global_sid_Network);
+
+ if (is_guest)
+ sid_copy(&ptoken->user_sids[4], &global_sid_Builtin_Guests);
+ else
+ sid_copy(&ptoken->user_sids[4], &global_sid_Authenticated_Users);
+
+ sid_ndx = 5; /* next available spot */
+
+ for (i = 0; i < n_groupSIDs; i++) {
+ size_t check_sid_idx;
+ for (check_sid_idx = 1; check_sid_idx < ptoken->num_sids; check_sid_idx++) {
+ if (sid_equal(&ptoken->user_sids[check_sid_idx],
+ &groupSIDs[i])) {
+ break;
+ }
+ }
+
+ if (check_sid_idx >= ptoken->num_sids) /* Not found already */ {
+ sid_copy(&ptoken->user_sids[sid_ndx++], &groupSIDs[i]);
+ } else {
+ ptoken->num_sids--;
+ }
+ }
+
+ debug_nt_user_token(DBGC_AUTH, 10, ptoken);
+
+ *token = ptoken;
+
+ return nt_status;
+}
+
+/****************************************************************************
+ Create the SID list for this user.
+****************************************************************************/
+
+NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest)
+{
+ DOM_SID user_sid;
+ DOM_SID group_sid;
+ DOM_SID *group_sids;
+ NT_USER_TOKEN *token;
+ int i;
+
+ if (!NT_STATUS_IS_OK(uid_to_sid(&user_sid, uid))) {
+ return NULL;
+ }
+ if (!NT_STATUS_IS_OK(gid_to_sid(&group_sid, gid))) {
+ return NULL;
+ }
+
+ group_sids = malloc(sizeof(DOM_SID) * ngroups);
+ if (!group_sids) {
+ DEBUG(0, ("create_nt_token: malloc() failed for DOM_SID list!\n"));
+ return NULL;
+ }
+
+ for (i = 0; i < ngroups; i++) {
+ if (!NT_STATUS_IS_OK(gid_to_sid(&(group_sids)[i], (groups)[i]))) {
+ DEBUG(1, ("create_nt_token: failed to convert gid %ld to a sid!\n", (long int)groups[i]));
+ SAFE_FREE(group_sids);
+ return NULL;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(create_nt_user_token(&user_sid, &group_sid,
+ ngroups, group_sids, is_guest, &token))) {
+ SAFE_FREE(group_sids);
+ return NULL;
+ }
+
+ SAFE_FREE(group_sids);
+
+ return token;
+}
+
+static void add_gid_to_array_unique(gid_t gid, gid_t **groups, int *ngroups)
+{
+ int i;
+
+ if ((*ngroups) >= groups_max())
+ return;
+
+ for (i=0; i<*ngroups; i++) {
+ if ((*groups)[i] == gid)
+ return;
+ }
+
+ *groups = Realloc(*groups, ((*ngroups)+1) * sizeof(gid_t));
+
+ if (*groups == NULL)
+ return;
+
+ (*groups)[*ngroups] = gid;
+ *ngroups += 1;
+}
+
+static void add_foreign_gids_from_sid(const DOM_SID *sid, gid_t **groups,
+ int *ngroups)
+{
+ DOM_SID *aliases;
+ int j, num_aliases;
+
+ if (!pdb_enum_alias_memberships(sid, &aliases, &num_aliases))
+ return;
+
+ for (j=0; j<num_aliases; j++) {
+ gid_t gid;
+
+ if (!NT_STATUS_IS_OK(sid_to_gid(&aliases[j], &gid)))
+ continue;
+
+ add_gid_to_array_unique(gid, groups, ngroups);
+ }
+ SAFE_FREE(aliases);
+}
+
+static void add_foreign_gids(uid_t uid, gid_t gid,
+ gid_t **groups, int *ngroups)
+{
+ int i, dom_groups;
+ DOM_SID sid;
+
+ if (NT_STATUS_IS_OK(uid_to_sid(&sid, uid)))
+ add_foreign_gids_from_sid(&sid, groups, ngroups);
+
+ if (NT_STATUS_IS_OK(gid_to_sid(&sid, gid)))
+ add_foreign_gids_from_sid(&sid, groups, ngroups);
+
+ dom_groups = *ngroups;
+
+ for (i=0; i<dom_groups; i++) {
+
+ if (!NT_STATUS_IS_OK(gid_to_sid(&sid, (*groups)[i])))
+ continue;
+
+ add_foreign_gids_from_sid(&sid, groups, ngroups);
+ }
+}
+
+/******************************************************************************
+ * this function returns the groups (SIDs) of the local SAM the user is in.
+ * If this samba server is a DC of the domain the user belongs to, it returns
+ * both domain groups and local / builtin groups. If the user is in a trusted
+ * domain, or samba is a member server of a domain, then this function returns
+ * local and builtin groups the user is a member of.
+ *
+ * currently this is a hack, as there is no sam implementation that is capable
+ * of groups.
+ *
+ * NOTE!! This function will fail if you pass in a winbind user without
+ * the domain --jerry
+ ******************************************************************************/
+
+static NTSTATUS get_user_groups(const char *username, uid_t uid, gid_t gid,
+ int *n_groups, DOM_SID **groups, gid_t **unix_groups)
+{
+ int n_unix_groups;
+ int i;
+
+ *n_groups = 0;
+ *groups = NULL;
+
+ /* Try winbind first */
+
+ if ( strchr(username, *lp_winbind_separator()) ) {
+ n_unix_groups = winbind_getgroups( username, unix_groups );
+
+ DEBUG(10,("get_user_groups: winbind_getgroups(%s): result = %s\n", username,
+ n_unix_groups == -1 ? "FAIL" : "SUCCESS"));
+
+ if ( n_unix_groups == -1 )
+ return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
+ }
+ else {
+ /* fallback to getgrouplist() */
+
+ n_unix_groups = groups_max();
+
+ if ((*unix_groups = malloc( sizeof(gid_t) * n_unix_groups ) ) == NULL) {
+ DEBUG(0, ("get_user_groups: Out of memory allocating unix group list\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
+
+ gid_t *groups_tmp;
+
+ groups_tmp = Realloc(*unix_groups, sizeof(gid_t) * n_unix_groups);
+
+ if (!groups_tmp) {
+ SAFE_FREE(*unix_groups);
+ return NT_STATUS_NO_MEMORY;
+ }
+ *unix_groups = groups_tmp;
+
+ if (sys_getgrouplist(username, gid, *unix_groups, &n_unix_groups) == -1) {
+ DEBUG(0, ("get_user_groups: failed to get the unix group list\n"));
+ SAFE_FREE(*unix_groups);
+ return NT_STATUS_NO_SUCH_USER; /* what should this return value be? */
+ }
+ }
+ }
+
+ add_foreign_gids(uid, gid, unix_groups, &n_unix_groups);
+
+ debug_unix_user_token(DBGC_CLASS, 5, uid, gid, n_unix_groups, *unix_groups);
+
+ /* now setup the space for storing the SIDS */
+
+ if (n_unix_groups > 0) {
+
+ *groups = malloc(sizeof(DOM_SID) * n_unix_groups);
+
+ if (!*groups) {
+ DEBUG(0, ("get_user_group: malloc() failed for DOM_SID list!\n"));
+ SAFE_FREE(*unix_groups);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ *n_groups = n_unix_groups;
+
+ for (i = 0; i < *n_groups; i++) {
+ if (!NT_STATUS_IS_OK(gid_to_sid(&(*groups)[i], (*unix_groups)[i]))) {
+ DEBUG(1, ("get_user_groups: failed to convert gid %ld to a sid!\n",
+ (long int)(*unix_groups)[i+1]));
+ SAFE_FREE(*groups);
+ SAFE_FREE(*unix_groups);
+ return NT_STATUS_NO_SUCH_USER;
+ }
+ }
+
+ return NT_STATUS_OK;
}
/***************************************************************************
Make a user_info struct
***************************************************************************/
-BOOL make_server_info(auth_serversupplied_info **server_info)
+static NTSTATUS make_server_info(auth_serversupplied_info **server_info)
{
*server_info = malloc(sizeof(**server_info));
if (!*server_info) {
DEBUG(0,("make_server_info: malloc failed!\n"));
- return False;
+ return NT_STATUS_NO_MEMORY;
}
ZERO_STRUCTP(*server_info);
- return True;
+
+ /* 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. */
+
+ (*server_info)->uid = -1;
+ (*server_info)->gid = -1;
+
+ return NT_STATUS_OK;
+}
+
+/***************************************************************************
+Fill a server_info struct from a SAM_ACCOUNT with their groups
+***************************************************************************/
+
+static NTSTATUS add_user_groups(auth_serversupplied_info **server_info,
+ SAM_ACCOUNT *sampass,
+ uid_t uid, gid_t gid)
+{
+ NTSTATUS nt_status;
+ const DOM_SID *user_sid = pdb_get_user_sid(sampass);
+ const DOM_SID *group_sid = pdb_get_group_sid(sampass);
+ int n_groupSIDs = 0;
+ DOM_SID *groupSIDs = NULL;
+ gid_t *unix_groups = NULL;
+ NT_USER_TOKEN *token;
+ BOOL is_guest;
+ uint32 rid;
+
+ nt_status = get_user_groups(pdb_get_username(sampass), uid, gid,
+ &n_groupSIDs, &groupSIDs, &unix_groups);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(4,("get_user_groups_from_local_sam failed\n"));
+ free_server_info(server_info);
+ return nt_status;
+ }
+
+ is_guest = (sid_peek_rid(user_sid, &rid) && rid == DOMAIN_USER_RID_GUEST);
+
+ if (!NT_STATUS_IS_OK(nt_status = create_nt_user_token(user_sid, group_sid,
+ n_groupSIDs, groupSIDs, is_guest,
+ &token)))
+ {
+ DEBUG(4,("create_nt_user_token failed\n"));
+ SAFE_FREE(groupSIDs);
+ SAFE_FREE(unix_groups);
+ free_server_info(server_info);
+ return nt_status;
+ }
+
+ SAFE_FREE(groupSIDs);
+
+ (*server_info)->n_groups = n_groupSIDs;
+ (*server_info)->groups = unix_groups;
+ (*server_info)->ptok = token;
+
+ return nt_status;
}
/***************************************************************************
Make (and fill) a user_info struct from a SAM_ACCOUNT
***************************************************************************/
-BOOL make_server_info_sam(auth_serversupplied_info **server_info, SAM_ACCOUNT *sampass)
+NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info,
+ SAM_ACCOUNT *sampass)
{
- if (!make_server_info(server_info)) {
- return False;
+ NTSTATUS nt_status;
+ struct passwd *pwd;
+
+ if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info)))
+ return nt_status;
+
+ (*server_info)->sam_account = sampass;
+
+ if ( !(pwd = getpwnam_alloc(pdb_get_username(sampass))) ) {
+ DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
+ pdb_get_username(sampass)));
+ free_server_info(server_info);
+ return NT_STATUS_NO_SUCH_USER;
+ }
+ (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
+ (*server_info)->gid = pwd->pw_gid;
+ (*server_info)->uid = pwd->pw_uid;
+
+ passwd_free(&pwd);
+
+ if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass,
+ (*server_info)->uid,
+ (*server_info)->gid))) {
+ free_server_info(server_info);
+ return nt_status;
}
(*server_info)->sam_fill_level = SAM_FILL_ALL;
- (*server_info)->sam_account = sampass;
+ DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
+ pdb_get_username(sampass),
+ (*server_info)->unix_name));
- DEBUG(5,("make_server_info_sam: made server info for user %s\n",
- pdb_get_username((*server_info)->sam_account)));
- return True;
+ return nt_status;
}
/***************************************************************************
to a SAM_ACCOUNT
***************************************************************************/
-BOOL make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
+NTSTATUS make_server_info_pw(auth_serversupplied_info **server_info, const struct passwd *pwd)
{
+ NTSTATUS nt_status;
SAM_ACCOUNT *sampass = NULL;
- if (!NT_STATUS_IS_OK(pdb_init_sam_pw(&sampass, pwd))) {
- return False;
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(&sampass, pwd))) {
+ return nt_status;
+ }
+ if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
+ return nt_status;
+ }
+
+ (*server_info)->sam_account = sampass;
+
+ if (!NT_STATUS_IS_OK(nt_status = add_user_groups(server_info, sampass, pwd->pw_uid, pwd->pw_gid))) {
+ return nt_status;
+ }
+
+ (*server_info)->unix_name = smb_xstrdup(pwd->pw_name);
+
+ (*server_info)->sam_fill_level = SAM_FILL_ALL;
+ (*server_info)->uid = pwd->pw_uid;
+ (*server_info)->gid = pwd->pw_gid;
+ return nt_status;
+}
+
+/***************************************************************************
+ Make (and fill) a user_info struct for a guest login.
+***************************************************************************/
+
+NTSTATUS make_server_info_guest(auth_serversupplied_info **server_info)
+{
+ NTSTATUS nt_status;
+ SAM_ACCOUNT *sampass = NULL;
+ DOM_SID guest_sid;
+
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
+ return nt_status;
+ }
+
+ sid_copy(&guest_sid, get_global_sam_sid());
+ sid_append_rid(&guest_sid, DOMAIN_USER_RID_GUEST);
+
+ become_root();
+ if (!pdb_getsampwsid(sampass, &guest_sid)) {
+ unbecome_root();
+ return NT_STATUS_NO_SUCH_USER;
+ }
+ unbecome_root();
+
+ nt_status = make_server_info_sam(server_info, sampass);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ static const char zeros[16];
+ (*server_info)->guest = True;
+
+ /* annoying, but the Guest really does have a session key,
+ and it is all zeros! */
+ (*server_info)->nt_session_key = data_blob(zeros, sizeof(zeros));
+ (*server_info)->lm_session_key = data_blob(zeros, sizeof(zeros));
+ }
+
+ return nt_status;
+}
+
+/***************************************************************************
+ 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,
+ SAM_ACCOUNT **sam_account)
+{
+ fstring dom_user;
+ struct passwd *passwd;
+
+ fstr_sprintf(dom_user, "%s%s%s", domain, lp_winbind_separator(),
+ username);
+
+ passwd = Get_Pwnam(dom_user);
+
+ if ( passwd ) {
+ char *p;
+
+ /* make sure we get the case of the username correct */
+ /* work around 'winbind use default domain = yes' */
+
+ p = strchr( passwd->pw_name, *lp_winbind_separator() );
+ if ( !p )
+ fstr_sprintf(dom_user, "%s%s%s", domain,
+ lp_winbind_separator(), passwd->pw_name);
+ else
+ fstrcpy( dom_user, passwd->pw_name );
+ }
+ else {
+ /* if the lookup for DOMAIN\username failed, try again
+ with just 'username'. This is need for accessing the server
+ as a trust user that actually maps to a local account */
+
+ fstrcpy( dom_user, username );
+ passwd = Get_Pwnam( dom_user );
+
+ /* make sure we get the case of the username correct */
+ if ( passwd )
+ fstrcpy( dom_user, passwd->pw_name );
+ }
+
+ if ( !passwd )
+ return NT_STATUS_NO_SUCH_USER;
+
+ *uid = passwd->pw_uid;
+ *gid = passwd->pw_gid;
+
+ /* This is pointless -- there is no suport for differeing
+ 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, dom_user);
+
+ DEBUG(5,("fill_sam_account: located username was [%s]\n",
+ *found_username));
+
+ return pdb_init_sam_pw(sam_account, passwd);
+}
+
+/****************************************************************************
+ 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( char *domuser )
+{
+ struct passwd *pw = NULL;
+ char *p;
+ fstring mapped_username;
+
+ pw = Get_Pwnam( domuser );
+ if ( pw )
+ return pw;
+
+ /* fallback to looking up just the username */
+
+ p = strchr( domuser, *lp_winbind_separator() );
+
+ if ( p ) {
+ p += 1;
+ fstrcpy( mapped_username, p );
+ map_username( mapped_username );
+ pw = Get_Pwnam(mapped_username);
+ if (!pw) {
+ /* Don't add a machine account. */
+ if (mapped_username[strlen(mapped_username)-1] == '$')
+ return NULL;
+
+ /* Create local user if requested. */
+ p = strchr( mapped_username, *lp_winbind_separator() );
+ if (p)
+ p += 1;
+ else
+ p = mapped_username;
+ auth_add_user_script(NULL, p);
+ return Get_Pwnam(p);
+ }
+ }
+
+ 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 *internal_username,
+ const char *sent_nt_username,
+ const char *domain,
+ auth_serversupplied_info **server_info,
+ NET_USER_INFO_3 *info3)
+{
+ static const char zeros[16];
+
+ NTSTATUS nt_status = NT_STATUS_OK;
+ char *found_username;
+ const char *nt_domain;
+ const char *nt_username;
+
+ SAM_ACCOUNT *sam_account = NULL;
+ DOM_SID user_sid;
+ DOM_SID group_sid;
+
+ uid_t uid;
+ gid_t gid;
+
+ int n_lgroupSIDs;
+ DOM_SID *lgroupSIDs = NULL;
+
+ gid_t *unix_groups = NULL;
+ NT_USER_TOKEN *token;
+
+ DOM_SID *all_group_SIDs;
+ size_t i;
+
+ /*
+ Here is where we should check the list of
+ trusted domains, and verify that the SID
+ matches.
+ */
+
+ sid_copy(&user_sid, &info3->dom_sid.sid);
+ if (!sid_append_rid(&user_sid, info3->user_rid)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ sid_copy(&group_sid, &info3->dom_sid.sid);
+ if (!sid_append_rid(&group_sid, info3->group_rid)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!(nt_username = unistr2_tdup(mem_ctx, &(info3->uni_user_name)))) {
+ /* If the server didn't give us one, just use the one we sent them */
+ nt_username = sent_nt_username;
+ }
+
+ if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3->uni_logon_dom)))) {
+ /* 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) */
+
+ nt_status = fill_sam_account(mem_ctx, nt_domain, internal_username,
+ &found_username, &uid, &gid, &sam_account);
+
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
+ DEBUG(3,("User %s does not exist, trying to add it\n",
+ internal_username));
+ auth_add_user_script(nt_domain, internal_username);
+ nt_status = fill_sam_account(mem_ctx, nt_domain,
+ internal_username, &found_username,
+ &uid, &gid, &sam_account);
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(0, ("make_server_info_info3: pdb_init_sam failed!\n"));
+ return nt_status;
+ }
+
+ if (!pdb_set_nt_username(sam_account, nt_username, PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_username(sam_account, nt_username, PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
}
- return make_server_info_sam(server_info, sampass);
+
+ if (!pdb_set_domain(sam_account, nt_domain, PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_user_sid(sam_account, &user_sid, PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if (!pdb_set_group_sid(sam_account, &group_sid, PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if (!pdb_set_fullname(sam_account, unistr2_static(&(info3->uni_full_name)),
+ PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_logon_script(sam_account, unistr2_static(&(info3->uni_logon_script)), PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_profile_path(sam_account, unistr2_static(&(info3->uni_profile_path)), PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_homedir(sam_account, unistr2_static(&(info3->uni_home_dir)), PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pdb_set_dir_drive(sam_account, unistr2_static(&(info3->uni_dir_drive)), PDB_CHANGED)) {
+ pdb_free_sam(&sam_account);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = make_server_info(server_info))) {
+ DEBUG(4, ("make_server_info failed!\n"));
+ pdb_free_sam(&sam_account);
+ return nt_status;
+ }
+
+ /* save this here to _net_sam_logon() doesn't fail (it assumes a
+ valid SAM_ACCOUNT) */
+
+ (*server_info)->sam_account = sam_account;
+
+ (*server_info)->unix_name = smb_xstrdup(found_username);
+
+ /* Fill in the unix info we found on the way */
+
+ (*server_info)->sam_fill_level = SAM_FILL_ALL;
+ (*server_info)->uid = uid;
+ (*server_info)->gid = gid;
+
+ /* Store the user group information in the server_info
+ returned to the caller. */
+
+ nt_status = get_user_groups((*server_info)->unix_name,
+ uid, gid, &n_lgroupSIDs, &lgroupSIDs, &unix_groups);
+
+ if ( !NT_STATUS_IS_OK(nt_status) ) {
+ DEBUG(4,("get_user_groups failed\n"));
+ return nt_status;
+ }
+
+ (*server_info)->groups = unix_groups;
+ (*server_info)->n_groups = n_lgroupSIDs;
+
+ /* Create a 'combined' list of all SIDs we might want in the SD */
+
+ all_group_SIDs = malloc(sizeof(DOM_SID) * (info3->num_groups2 +info3->num_other_sids));
+
+ if (!all_group_SIDs) {
+ DEBUG(0, ("malloc() failed for DOM_SID list!\n"));
+ SAFE_FREE(lgroupSIDs);
+ free_server_info(server_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+#if 0 /* JERRY -- no such thing as local groups in current code */
+ /* Copy the 'local' sids */
+ memcpy(all_group_SIDs, lgroupSIDs, sizeof(DOM_SID) * n_lgroupSIDs);
+ SAFE_FREE(lgroupSIDs);
+#endif
+
+ /* and create (by appending rids) the 'domain' sids */
+
+ for (i = 0; i < info3->num_groups2; i++) {
+
+ sid_copy(&all_group_SIDs[i], &(info3->dom_sid.sid));
+
+ if (!sid_append_rid(&all_group_SIDs[i], info3->gids[i].g_rid)) {
+
+ nt_status = NT_STATUS_INVALID_PARAMETER;
+
+ DEBUG(3,("could not append additional group rid 0x%x\n",
+ info3->gids[i].g_rid));
+
+ SAFE_FREE(lgroupSIDs);
+ free_server_info(server_info);
+
+ return nt_status;
+
+ }
+ }
+
+ /* Copy 'other' sids. We need to do sid filtering here to
+ prevent possible elevation of privileges. See:
+
+ http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
+ */
+
+ for (i = 0; i < info3->num_other_sids; i++) {
+ sid_copy(&all_group_SIDs[info3->num_groups2 + i],
+ &info3->other_sids[i].sid);
+ }
+
+ /* Where are the 'global' sids... */
+
+ /* can the user be guest? if yes, where is it stored? */
+
+ nt_status = create_nt_user_token(&user_sid, &group_sid,
+ info3->num_groups2 + info3->num_other_sids,
+ all_group_SIDs, False, &token);
+
+ if ( !NT_STATUS_IS_OK(nt_status) ) {
+ DEBUG(4,("create_nt_user_token failed\n"));
+ SAFE_FREE(all_group_SIDs);
+ free_server_info(server_info);
+ return nt_status;
+ }
+
+ (*server_info)->ptok = token;
+
+ SAFE_FREE(all_group_SIDs);
+
+ /* ensure we are never given NULL session keys */
+
+ if (memcmp(info3->user_sess_key, zeros, sizeof(zeros)) == 0) {
+ (*server_info)->nt_session_key = data_blob(NULL, 0);
+ } else {
+ (*server_info)->nt_session_key = data_blob(info3->user_sess_key, sizeof(info3->user_sess_key));
+ }
+
+ if (memcmp(info3->padding, zeros, sizeof(zeros)) == 0) {
+ (*server_info)->lm_session_key = data_blob(NULL, 0);
+ } else {
+ (*server_info)->lm_session_key = data_blob(info3->padding, 16);
+ }
+ return NT_STATUS_OK;
}
/***************************************************************************
void free_server_info(auth_serversupplied_info **server_info)
{
+ DEBUG(5,("attempting to free (and zero) a server_info structure\n"));
if (*server_info != NULL) {
pdb_free_sam(&(*server_info)->sam_account);
-
+
/* call pam_end here, unless we know we are keeping it */
delete_nt_token( &(*server_info)->ptok );
+ SAFE_FREE((*server_info)->groups);
+ SAFE_FREE((*server_info)->unix_name);
+ data_blob_free(&(*server_info)->lm_session_key);
+ data_blob_free(&(*server_info)->nt_session_key);
ZERO_STRUCT(**server_info);
}
SAFE_FREE(*server_info);
}
-/***************************************************************************
- Make a server_info struct for a guest user
-***************************************************************************/
-
-BOOL make_server_info_guest(auth_serversupplied_info **server_info)
-{
- struct passwd *pass = getpwnam_alloc(lp_guestaccount());
-
- if (pass) {
- if (!make_server_info_pw(server_info, pass)) {
- passwd_free(&pass);
- return False;
- }
- (*server_info)->guest = True;
- passwd_free(&pass);
- return True;
- }
- DEBUG(0,("make_server_info_guest: getpwnam_alloc() failed on guest account!\n"));
- return False;
-}
-
/***************************************************************************
Make an auth_methods struct
***************************************************************************/
void delete_nt_token(NT_USER_TOKEN **pptoken)
{
if (*pptoken) {
- NT_USER_TOKEN *ptoken = *pptoken;
- SAFE_FREE( ptoken->user_sids );
- ZERO_STRUCTP(ptoken);
+ NT_USER_TOKEN *ptoken = *pptoken;
+ SAFE_FREE( ptoken->user_sids );
+ ZERO_STRUCTP(ptoken);
}
SAFE_FREE(*pptoken);
}
}
+/**
+ * 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 once or
+ * false if otherwise
+ **/
+
+BOOL is_trusted_domain(const char* dom_name)
+{
+ DOM_SID trustdom_sid;
+ char *pass = NULL;
+ time_t lct;
+ BOOL ret;
+
+ /* no trusted domains for a standalone server */
+
+ if ( lp_server_role() == ROLE_STANDALONE )
+ return False;
+
+ /* if we are a DC, then check for a direct trust relationships */
+
+ if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
+ become_root();
+ ret = secrets_fetch_trusted_domain_password(dom_name, &pass, &trustdom_sid, &lct);
+ unbecome_root();
+ SAFE_FREE(pass);
+ if (ret)
+ return True;
+ }
+ else {
+ /* if winbindd is not up and we are a domain member) then we need to update the
+ trustdom_cache ourselves */
+
+ if ( !winbind_ping() )
+ 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;
+}