/* convert a sid to a user or group name */
NTSTATUS ads_sid_to_name(ADS_STRUCT *ads,
TALLOC_CTX *mem_ctx,
const DOM_SID *sid,
char **name,
enum SID_NAME_USE *type)
{
const char *attrs[] = {"userPrincipalName",
"sAMAccountName",
"sAMAccountType", NULL};
ADS_STATUS rc;
void *msg = NULL;
char *ldap_exp = NULL;
char *sidstr = NULL;
uint32 atype;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
if (!(sidstr = sid_binstring(sid))) {
DEBUG(1,("ads_sid_to_name: sid_binstring failed!\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
if (asprintf(&ldap_exp, "(objectSid=%s)", sidstr) == -1) {
DEBUG(1,("ads_sid_to_name: asprintf failed!\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
rc = ads_search_retry(ads, &msg, ldap_exp, attrs);
if (!ADS_ERR_OK(rc)) {
status = ads_ntstatus(rc);
DEBUG(1,("ads_sid_to_name ads_search: %s\n", ads_errstr(rc)));
goto done;
}
if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype)) {
goto done;
}
*name = ads_pull_username(ads, mem_ctx, msg);
if (!*name) {
DEBUG(1,("ads_sid_to_name: ads_pull_username retuned NULL!\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
*type = ads_atype_map(atype);
status = NT_STATUS_OK;
DEBUG(3,("ads sid_to_name mapped %s\n", *name));
done:
if (msg) ads_msgfree(ads, msg);
SAFE_FREE(ldap_exp);
SAFE_FREE(sidstr);
return status;
}
/*
find the members of a group, given a group rid and domain
*/
static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
TALLOC_CTX *mem_ctx,
const DOM_SID *group_sid,
enum lsa_SidType type,
uint32 *num_names,
DOM_SID **sid_mem, char ***names,
uint32 **name_types)
{
ADS_STATUS rc;
ADS_STRUCT *ads = NULL;
char *ldap_exp;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
char *sidbinstr;
char **members = NULL;
int i;
size_t num_members = 0;
ads_control args;
DOM_SID *sid_mem_nocache = NULL;
char **names_nocache = NULL;
enum lsa_SidType *name_types_nocache = NULL;
char **domains_nocache = NULL; /* only needed for rpccli_lsa_lookup_sids */
uint32 num_nocache = 0;
TALLOC_CTX *tmp_ctx = NULL;
DEBUG(10,("ads: lookup_groupmem %s sid=%s\n", domain->name,
sid_string_dbg(group_sid)));
*num_names = 0;
tmp_ctx = talloc_new(mem_ctx);
if (!tmp_ctx) {
DEBUG(1, ("ads: lookup_groupmem: talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
if ( !winbindd_can_contact_domain( domain ) ) {
DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
domain->name));
return NT_STATUS_OK;
}
ads = ads_cached_connection(domain);
if (!ads) {
domain->last_status = NT_STATUS_SERVER_DISABLED;
goto done;
}
if ((sidbinstr = sid_binstring(talloc_tos(), group_sid)) == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
/* search for all members of the group */
ldap_exp = talloc_asprintf(tmp_ctx, "(objectSid=%s)", sidbinstr);
TALLOC_FREE(sidbinstr);
if (ldap_exp == NULL) {
DEBUG(1, ("ads: lookup_groupmem: talloc_asprintf for ldap_exp failed!\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
args.control = ADS_EXTENDED_DN_OID;
args.val = ADS_EXTENDED_DN_HEX_STRING;
args.critical = True;
rc = ads_ranged_search(ads, tmp_ctx, LDAP_SCOPE_SUBTREE, ads->config.bind_path,
ldap_exp, &args, "member", &members, &num_members);
if (!ADS_ERR_OK(rc)) {
DEBUG(0,("ads_ranged_search failed with: %s\n", ads_errstr(rc)));
status = NT_STATUS_UNSUCCESSFUL;
goto done;
}
DEBUG(10, ("ads lookup_groupmem: got %d sids via extended dn call\n", (int)num_members));
/* Now that we have a list of sids, we need to get the
* lists of names and name_types belonging to these sids.
* even though conceptually not quite clean, we use the
* RPC call lsa_lookup_sids for this since it can handle a
* list of sids. ldap calls can just resolve one sid at a time.
*
* At this stage, the sids are still hidden in the exetended dn
* member output format. We actually do a little better than
* stated above: In extracting the sids from the member strings,
* we try to resolve as many sids as possible from the
* cache. Only the rest is passed to the lsa_lookup_sids call. */
if (num_members) {
(*sid_mem) = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_members);
(*names) = TALLOC_ZERO_ARRAY(mem_ctx, char *, num_members);
(*name_types) = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_members);
(sid_mem_nocache) = TALLOC_ZERO_ARRAY(tmp_ctx, DOM_SID, num_members);
if ((members == NULL) || (*sid_mem == NULL) ||
(*names == NULL) || (*name_types == NULL) ||
(sid_mem_nocache == NULL))
{
DEBUG(1, ("ads: lookup_groupmem: talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
}
else {
ADS_STATUS ads_sid_to_dn(ADS_STRUCT *ads,
TALLOC_CTX *mem_ctx,
const DOM_SID *sid,
char **dn)
{
ADS_STATUS rc;
LDAPMessage *msg = NULL;
LDAPMessage *entry = NULL;
char *ldap_exp;
char *sidstr = NULL;
int count;
char *dn2 = NULL;
const char *attr[] = {
"dn",
NULL
};
if (!(sidstr = sid_binstring(sid))) {
DEBUG(1,("ads_sid_to_dn: sid_binstring failed!\n"));
rc = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
goto done;
}
if(!(ldap_exp = talloc_asprintf(mem_ctx, "(objectSid=%s)", sidstr))) {
DEBUG(1,("ads_sid_to_dn: talloc_asprintf failed!\n"));
rc = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
goto done;
}
rc = ads_search_retry(ads, (void **)&msg, ldap_exp, attr);
if (!ADS_ERR_OK(rc)) {
DEBUG(1,("ads_sid_to_dn ads_search: %s\n", ads_errstr(rc)));
goto done;
}
if ((count = ads_count_replies(ads, msg)) != 1) {
fstring sid_string;
DEBUG(1,("ads_sid_to_dn (sid=%s): Not found (count=%d)\n",
sid_to_string(sid_string, sid), count));
rc = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
goto done;
}
entry = ads_first_entry(ads, msg);
dn2 = ads_get_dn(ads, entry);
if (!dn2) {
rc = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
goto done;
}
*dn = talloc_strdup(mem_ctx, dn2);
if (!*dn) {
ads_memfree(ads, dn2);
rc = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
goto done;
}
rc = ADS_ERROR_NT(NT_STATUS_OK);
DEBUG(3,("ads sid_to_dn mapped %s\n", dn2));
SAFE_FREE(dn2);
done:
if (msg) ads_msgfree(ads, msg);
if (dn2) ads_memfree(ads, dn2);
SAFE_FREE(sidstr);
return rc;
}
/* Lookup user information from a rid */
static NTSTATUS query_user(struct winbindd_domain *domain,
TALLOC_CTX *mem_ctx,
const DOM_SID *sid,
struct wbint_userinfo *info)
{
ADS_STRUCT *ads = NULL;
const char *attrs[] = { "*", NULL };
ADS_STATUS rc;
int count;
LDAPMessage *msg = NULL;
char *ldap_exp;
char *sidstr;
uint32 group_rid;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
struct netr_SamInfo3 *user = NULL;
gid_t gid;
DEBUG(3,("ads: query_user\n"));
info->homedir = NULL;
info->shell = NULL;
info->primary_gid = (gid_t)-1;
/* try netsamlogon cache first */
if ( (user = netsamlogon_cache_get( mem_ctx, sid )) != NULL )
{
DEBUG(5,("query_user: Cache lookup succeeded for %s\n",
sid_string_dbg(sid)));
sid_compose(&info->user_sid, &domain->sid, user->base.rid);
sid_compose(&info->group_sid, &domain->sid, user->base.primary_gid);
info->acct_name = talloc_strdup(mem_ctx, user->base.account_name.string);
info->full_name = talloc_strdup(mem_ctx, user->base.full_name.string);
nss_get_info_cached( domain, sid, mem_ctx, NULL, NULL,
&info->homedir, &info->shell, &info->full_name,
&gid );
info->primary_gid = gid;
TALLOC_FREE(user);
return NT_STATUS_OK;
}
if ( !winbindd_can_contact_domain(domain)) {
DEBUG(8,("query_user: No incoming trust from domain %s\n",
domain->name));
/* We still need to generate some basic information
about the user even if we cannot contact the
domain. Most of this stuff we can deduce. */
sid_copy( &info->user_sid, sid );
/* Assume "Domain Users" for the primary group */
sid_compose(&info->group_sid, &domain->sid, DOMAIN_GROUP_RID_USERS );
/* Try to fill in what the nss_info backend can do */
nss_get_info_cached( domain, sid, mem_ctx, NULL, NULL,
&info->homedir, &info->shell, &info->full_name,
&gid);
info->primary_gid = gid;
status = NT_STATUS_OK;
goto done;
}
/* no cache...do the query */
if ( (ads = ads_cached_connection(domain)) == NULL ) {
domain->last_status = NT_STATUS_SERVER_DISABLED;
goto done;
}
sidstr = sid_binstring(talloc_tos(), sid);
if (asprintf(&ldap_exp, "(objectSid=%s)", sidstr) == -1) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
rc = ads_search_retry(ads, &msg, ldap_exp, attrs);
free(ldap_exp);
TALLOC_FREE(sidstr);
if (!ADS_ERR_OK(rc) || !msg) {
DEBUG(1,("query_user(sid=%s) ads_search: %s\n",
sid_string_dbg(sid), ads_errstr(rc)));
goto done;
}
count = ads_count_replies(ads, msg);
if (count != 1) {
DEBUG(1,("query_user(sid=%s): Not found\n",
sid_string_dbg(sid)));
goto done;
}
info->acct_name = ads_pull_username(ads, mem_ctx, msg);
nss_get_info_cached( domain, sid, mem_ctx, ads, msg,
&info->homedir, &info->shell, &info->full_name,
&gid);
info->primary_gid = gid;
if (info->full_name == NULL) {
info->full_name = ads_pull_string(ads, mem_ctx, msg, "name");
}
if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group_rid)) {
DEBUG(1,("No primary group for %s !?\n",
sid_string_dbg(sid)));
goto done;
}
sid_copy(&info->user_sid, sid);
sid_compose(&info->group_sid, &domain->sid, group_rid);
status = NT_STATUS_OK;
DEBUG(3,("ads query_user gave %s\n", info->acct_name));
done:
if (msg)
ads_msgfree(ads, msg);
return status;
}
