Copyright (C) Volker Lendecke 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
-
+
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 <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "events/events.h"
#include "ldb.h"
#include "ldb_errors.h"
-#include "lib/util/util_ldb.h"
+#include "../lib/util/util_ldb.h"
+#include "../lib/crypto/crypto.h"
#include "dsdb/samdb/samdb.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/ndr_security.h"
+#include "librpc/gen_ndr/ndr_misc.h"
#include "dsdb/common/flags.h"
#include "dsdb/common/proto.h"
#include "libcli/ldap/ldap_ndr.h"
return samdb_result_string(res[0], attr_name, NULL);
}
-
/*
search the sam for a single string attribute in exactly 1 record
return ldb_msg_find_attr_as_uint64(msg, attr, default_value);
}
+/*
+ * Windows uses both 0 and 9223372036854775807 (0x7FFFFFFFFFFFFFFFULL) to
+ * indicate an account doesn't expire.
+ *
+ * When Windows initially creates an account, it sets
+ * accountExpires = 9223372036854775807 (0x7FFFFFFFFFFFFFFF). However,
+ * when changing from an account having a specific expiration date to
+ * that account never expiring, it sets accountExpires = 0.
+ *
+ * Consolidate that logic here to allow clearer logic for account expiry in
+ * the rest of the code.
+ */
+NTTIME samdb_result_account_expires(struct ldb_message *msg)
+{
+ NTTIME ret = ldb_msg_find_attr_as_uint64(msg, "accountExpires",
+ 0);
+
+ if (ret == 0)
+ ret = 0x7FFFFFFFFFFFFFFFULL;
+
+ return ret;
+}
+
/*
pull a uint64_t from a result set.
*/
struct ldb_message *msg)
{
uint64_t attr_time = samdb_result_uint64(msg, "pwdLastSet", 0);
- uint32_t userAccountcontrol = samdb_result_uint64(msg, "userAccountControl", 0);
+ uint32_t userAccountControl = samdb_result_uint64(msg, "userAccountControl", 0);
int64_t maxPwdAge;
/* Machine accounts don't expire, and there is a flag for 'no expiry' */
maxPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "maxPwdAge", NULL);
if (maxPwdAge == 0) {
- return 0;
+ return 0x7FFFFFFFFFFFFFFFULL;
} else {
attr_time -= maxPwdAge;
}
/*
pull a samr_Password structutre from a result set.
*/
-struct samr_Password *samdb_result_hash(TALLOC_CTX *mem_ctx, struct ldb_message *msg, const char *attr)
+struct samr_Password *samdb_result_hash(TALLOC_CTX *mem_ctx, const struct ldb_message *msg, const char *attr)
{
struct samr_Password *hash = NULL;
const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
/*
pull an array of samr_Password structutres from a result set.
*/
-uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
+uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr, struct samr_Password **hashes)
{
uint_t count = 0;
return count;
}
-NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
+NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, struct ldb_message *msg,
struct samr_Password **lm_pwd, struct samr_Password **nt_pwd)
{
struct samr_Password *lmPwdHash, *ntPwdHash;
}
}
if (lm_pwd) {
- int num_lm;
- num_lm = samdb_result_hashes(mem_ctx, msg, "dBCSPwd", &lmPwdHash);
- if (num_lm == 0) {
- *lm_pwd = NULL;
- } else if (num_lm > 1) {
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
+ /* Ensure that if we have turned off LM
+ * authentication, that we never use the LM hash, even
+ * if we store it */
+ if (lp_lanman_auth(lp_ctx)) {
+ int num_lm;
+ num_lm = samdb_result_hashes(mem_ctx, msg, "dBCSPwd", &lmPwdHash);
+ if (num_lm == 0) {
+ *lm_pwd = NULL;
+ } else if (num_lm > 1) {
+ return NT_STATUS_INTERNAL_DB_CORRUPTION;
+ } else {
+ *lm_pwd = &lmPwdHash[0];
+ }
} else {
- *lm_pwd = &lmPwdHash[0];
+ *lm_pwd = NULL;
}
}
return NT_STATUS_OK;
uint32_t acct_flags = samdb_uf2acb(userAccountControl);
NTTIME must_change_time;
NTTIME now;
-
+
must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
domain_dn, msg);
-
+
/* Test account expire time */
unix_to_nt_time(&now, time(NULL));
/* check for expired password */
return acct_flags;
}
+struct lsa_BinaryString samdb_result_parameters(TALLOC_CTX *mem_ctx,
+ struct ldb_message *msg,
+ const char *attr)
+{
+ struct lsa_BinaryString s;
+ const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
+
+ ZERO_STRUCT(s);
+
+ if (!val) {
+ return s;
+ }
+
+ s.array = talloc_array(mem_ctx, uint16_t, val->length/2);
+ if (!s.array) {
+ return s;
+ }
+ s.length = s.size = val->length/2;
+ memcpy(s.array, val->data, val->length);
+
+ return s;
+}
/* Find an attribute, with a particular value */
if (el) {
return LDB_SUCCESS;
}
-
+
return samdb_msg_add_string(ldb, msg, msg, name, set_value);
}
return ldb_msg_add_value(msg, attr_name, &val, NULL);
}
+/*
+ add a parameters element to a message
+*/
+int samdb_msg_add_parameters(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
+ const char *attr_name, struct lsa_BinaryString *parameters)
+{
+ struct ldb_val val;
+ val.length = parameters->length * 2;
+ val.data = (uint8_t *)parameters->array;
+ return ldb_msg_add_value(msg, attr_name, &val, NULL);
+}
/*
add a general value element to a message
*/
const struct dom_sid *samdb_domain_sid(struct ldb_context *ldb)
{
TALLOC_CTX *tmp_ctx;
- struct dom_sid *domain_sid;
+ const struct dom_sid *domain_sid;
+ const char *attrs[] = {
+ "objectSid",
+ NULL
+ };
+ struct ldb_result *res;
+ int ret;
/* see if we have a cached copy */
domain_sid = (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
goto failed;
}
- /* find the domain_sid */
- domain_sid = samdb_search_dom_sid(ldb, tmp_ctx, ldb_get_default_basedn(ldb),
- "objectSid", "objectClass=domainDNS");
+ ret = ldb_search(ldb, tmp_ctx, &res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, attrs, "objectSid=*");
+
+ if (ret != LDB_SUCCESS) {
+ goto failed;
+ }
+
+ if (res->count != 1) {
+ goto failed;
+ }
+
+ domain_sid = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSid");
if (domain_sid == NULL) {
goto failed;
}
/* cache the domain_sid in the ldb */
- if (ldb_set_opaque(ldb, "cache.domain_sid", domain_sid) != LDB_SUCCESS) {
+ if (ldb_set_opaque(ldb, "cache.domain_sid", discard_const_p(struct dom_sid, domain_sid)) != LDB_SUCCESS) {
goto failed;
}
int ret;
struct ldb_result *root_res;
struct ldb_dn *settings_dn;
-
+
/* see if we have a cached copy */
settings_dn = (struct ldb_dn *)ldb_get_opaque(ldb, "cache.settings_dn");
if (settings_dn) {
if (tmp_ctx == NULL) {
goto failed;
}
-
- ret = ldb_search(ldb, ldb_dn_new(tmp_ctx, ldb, ""), LDB_SCOPE_BASE, NULL, root_attrs, &root_res);
+ ret = ldb_search(ldb, tmp_ctx, &root_res, ldb_dn_new(tmp_ctx, ldb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
if (ret) {
DEBUG(1,("Searching for dsServiceName in rootDSE failed: %s\n",
ldb_errstring(ldb)));
goto failed;
}
- talloc_steal(tmp_ctx, root_res);
if (root_res->count != 1) {
goto failed;
int ret;
struct ldb_result *res;
struct GUID *invocation_id;
-
+
/* see if we have a cached copy */
invocation_id = (struct GUID *)ldb_get_opaque(ldb, "cache.invocation_id");
if (invocation_id) {
goto failed;
}
- ret = ldb_search(ldb, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, NULL, attrs, &res);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
goto failed;
}
- talloc_steal(tmp_ctx, res);
if (res->count != 1) {
goto failed;
int ret;
struct ldb_result *res;
struct GUID *ntds_guid;
-
+
/* see if we have a cached copy */
ntds_guid = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
if (ntds_guid) {
goto failed;
}
- ret = ldb_search(ldb, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, NULL, attrs, &res);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
goto failed;
}
- talloc_steal(tmp_ctx, res);
if (res->count != 1) {
goto failed;
TALLOC_CTX *tmp_ctx;
struct GUID *ntds_guid_new;
struct GUID *ntds_guid_old;
-
+
/* see if we have a cached copy */
ntds_guid_old = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
return false;
}
- ret = ldb_search(ldb, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, NULL, dom_attrs, &dom_res);
+ ret = ldb_search(ldb, tmp_ctx, &dom_res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, dom_attrs, NULL);
if (ret) {
DEBUG(1,("Searching for fSMORoleOwner in %s failed: %s\n",
ldb_dn_get_linearized(ldb_get_default_basedn(ldb)),
ldb_errstring(ldb)));
goto failed;
}
- talloc_steal(tmp_ctx, dom_res);
if (dom_res->count != 1) {
goto failed;
}
}
/* Query cn=ntds settings,.... */
- ret = ldb_search(ldb, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, NULL, attrs, &res);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
+ talloc_free(tmp_ctx);
return false;
}
if (res->count != 1) {
- talloc_free(res);
+ talloc_free(tmp_ctx);
return false;
}
options = ldb_msg_find_attr_as_int(res->msgs[0], "options", 0);
- talloc_free(res);
talloc_free(tmp_ctx);
/* if options attribute has the 0x00000001 flag set, then enable the global catlog */
local_ctx = talloc_new(mem_ctx);
if (local_ctx == NULL) return LDB_ERR_OPERATIONS_ERROR;
-
+
while ((sdn = ldb_dn_get_parent(local_ctx, sdn))) {
- ret = ldb_search(ldb, sdn, LDB_SCOPE_BASE,
- "(|(objectClass=domain)(objectClass=builtinDomain))", attrs, &res);
+ ret = ldb_search(ldb, local_ctx, &res, sdn, LDB_SCOPE_BASE, attrs,
+ "(|(|(objectClass=domain)(objectClass=builtinDomain))(objectClass=samba4LocalDomain))");
if (ret == LDB_SUCCESS) {
- talloc_steal(local_ctx, res);
if (res->count == 1) {
break;
}
The caller should probably have a transaction wrapping this
*/
-_PUBLIC_ NTSTATUS samdb_set_password(struct ldb_context *ctx, TALLOC_CTX *mem_ctx,
+NTSTATUS samdb_set_password(struct ldb_context *ctx, TALLOC_CTX *mem_ctx,
struct ldb_dn *user_dn,
struct ldb_dn *domain_dn,
struct ldb_message *mod,
- const char *new_pass,
+ const DATA_BLOB *new_password,
struct samr_Password *lmNewHash,
struct samr_Password *ntNewHash,
bool user_change,
minPwdLength = samdb_result_uint(res[0], "minPwdLength", 0);
minPwdAge = samdb_result_int64(res[0], "minPwdAge", 0);
+ if (userAccountControl & UF_PASSWD_NOTREQD) {
+ /* see [MS-ADTS] 2.2.15 */
+ minPwdLength = 0;
+ }
+
if (_dominfo) {
struct samr_DomInfo1 *dominfo;
/* on failure we need to fill in the reject reasons */
*_dominfo = dominfo;
}
- if (restrictions && new_pass) {
+ if (restrictions && new_password) {
+ char *new_pass;
/* check the various password restrictions */
- if (restrictions && minPwdLength > strlen_m(new_pass)) {
+ if (restrictions && minPwdLength > utf16_len_n(new_password->data, new_password->length) / 2) {
if (reject_reason) {
*reject_reason = SAMR_REJECT_TOO_SHORT;
}
return NT_STATUS_PASSWORD_RESTRICTION;
}
-
- /* possibly check password complexity */
- if (restrictions && pwdProperties & DOMAIN_PASSWORD_COMPLEX &&
- !samdb_password_complexity_ok(new_pass)) {
- if (reject_reason) {
- *reject_reason = SAMR_REJECT_COMPLEXITY;
+
+ /* Create the NT hash */
+ mdfour(local_ntNewHash.hash, new_password->data, new_password->length);
+
+ ntNewHash = &local_ntNewHash;
+
+ /* Only check complexity if we can convert it at all. Assuming unconvertable passwords are 'strong' */
+ if (convert_string_talloc_convenience(mem_ctx, lp_iconv_convenience(ldb_get_opaque(ctx, "loadparm")),
+ CH_UTF16, CH_UNIX,
+ new_password->data, new_password->length,
+ (void **)&new_pass, NULL, false)) {
+
+ /* possibly check password complexity */
+ if (restrictions && (pwdProperties & DOMAIN_PASSWORD_COMPLEX) &&
+ !samdb_password_complexity_ok(new_pass)) {
+ if (reject_reason) {
+ *reject_reason = SAMR_REJECT_COMPLEXITY;
+ }
+ return NT_STATUS_PASSWORD_RESTRICTION;
}
- return NT_STATUS_PASSWORD_RESTRICTION;
- }
-
- /* compute the new nt and lm hashes */
- if (E_deshash(new_pass, local_lmNewHash.hash)) {
- lmNewHash = &local_lmNewHash;
- }
- if (!E_md4hash(new_pass, local_ntNewHash.hash)) {
- /* If we can't convert this password to UCS2, then we should not accept it */
- if (reject_reason) {
- *reject_reason = SAMR_REJECT_OTHER;
+
+ /* compute the new lm hashes (for checking history - case insenitivly!) */
+ if (E_deshash(new_pass, local_lmNewHash.hash)) {
+ lmNewHash = &local_lmNewHash;
}
- return NT_STATUS_PASSWORD_RESTRICTION;
}
- ntNewHash = &local_ntNewHash;
}
- if (user_change) {
+ if (restrictions && user_change) {
/* are all password changes disallowed? */
if (pwdProperties & DOMAIN_REFUSE_PASSWORD_CHANGE) {
if (reject_reason) {
}
return NT_STATUS_PASSWORD_RESTRICTION;
}
-
+
/* can this user change password? */
if (userAccountControl & UF_PASSWD_CANT_CHANGE) {
if (reject_reason) {
}
return NT_STATUS_PASSWORD_RESTRICTION;
}
-
+
/* yes, this is a minus. The ages are in negative 100nsec units! */
if (pwdLastSet - minPwdAge > now_nt) {
if (reject_reason) {
return NT_STATUS_PASSWORD_RESTRICTION;
}
}
-
+
/* check the password history */
sambaLMPwdHistory_len = MIN(sambaLMPwdHistory_len, pwdHistoryLength);
sambaNTPwdHistory_len = MIN(sambaNTPwdHistory_len, pwdHistoryLength);
-
+
for (i=0; lmNewHash && i<sambaLMPwdHistory_len;i++) {
if (memcmp(lmNewHash->hash, sambaLMPwdHistory[i].hash, 16) == 0) {
if (reject_reason) {
#define CHECK_RET(x) do { if (x != 0) return NT_STATUS_NO_MEMORY; } while(0)
/* the password is acceptable. Start forming the new fields */
- if (new_pass) {
- /* if we know the cleartext, then only set it.
+ if (new_password) {
+ /* if we know the cleartext UTF16 password, then set it.
* Modules in ldb will set all the appropriate
* hashes */
- CHECK_RET(samdb_msg_add_string(ctx, mem_ctx, mod,
- "sambaPassword", new_pass));
+ CHECK_RET(ldb_msg_add_value(mod, "clearTextPassword", new_password, NULL));
} else {
/* We don't have the cleartext, so delete the old one
* and set what we have of the hashes */
- CHECK_RET(samdb_msg_add_delete(ctx, mem_ctx, mod, "sambaPassword"));
+ CHECK_RET(samdb_msg_add_delete(ctx, mem_ctx, mod, "clearTextPassword"));
if (lmNewHash) {
CHECK_RET(samdb_msg_add_hash(ctx, mem_ctx, mod, "dBCSPwd", lmNewHash));
} else {
CHECK_RET(samdb_msg_add_delete(ctx, mem_ctx, mod, "dBCSPwd"));
}
-
+
if (ntNewHash) {
CHECK_RET(samdb_msg_add_hash(ctx, mem_ctx, mod, "unicodePwd", ntNewHash));
} else {
and actually performs the password change
*/
-_PUBLIC_ NTSTATUS samdb_set_password_sid(struct ldb_context *ctx, TALLOC_CTX *mem_ctx,
+NTSTATUS samdb_set_password_sid(struct ldb_context *ctx, TALLOC_CTX *mem_ctx,
const struct dom_sid *user_sid,
- const char *new_pass,
+ const DATA_BLOB *new_pass,
struct samr_Password *lmNewHash,
struct samr_Password *ntNewHash,
bool user_change,
ldb_transaction_cancel(ctx);
return nt_status;
}
-
+
/* modify the samdb record */
ret = samdb_replace(ctx, mem_ctx, msg);
if (ret != 0) {
struct ldb_dn *basedn;
const char *sidstr;
int ret;
-
+
sidstr = dom_sid_string(mem_ctx, sid);
NT_STATUS_HAVE_NO_MEMORY(sidstr);
-
+
/* We might have to create a ForeignSecurityPrincipal, even if this user
* is in our own domain */
-
+
msg = ldb_msg_new(mem_ctx);
if (msg == NULL) {
return NT_STATUS_NO_MEMORY;
}
-
+
/* TODO: Hmmm. This feels wrong. How do I find the base dn to
* put the ForeignSecurityPrincipals? d_state->domain_dn does
* not work, this is wrong for the Builtin domain, there's no
* cn=For...,cn=Builtin,dc={BASEDN}. -- vl
*/
-
+
basedn = samdb_search_dn(sam_ctx, mem_ctx, NULL,
"(&(objectClass=container)(cn=ForeignSecurityPrincipals))");
-
+
if (basedn == NULL) {
DEBUG(0, ("Failed to find DN for "
"ForeignSecurityPrincipal container\n"));
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
-
+
/* add core elements to the ldb_message for the alias */
msg->dn = ldb_dn_copy(mem_ctx, basedn);
if ( ! ldb_dn_add_child_fmt(msg->dn, "CN=%s", sidstr))
return NT_STATUS_NO_MEMORY;
-
+
samdb_msg_add_string(sam_ctx, mem_ctx, msg,
"objectClass",
"foreignSecurityPrincipal");
-
+
/* create the alias */
ret = ldb_add(sam_ctx, msg);
if (ret != 0) {
const char *binary_encoded;
const char **split_realm;
struct ldb_dn *dn;
-
+
if (!tmp_ctx) {
return NULL;
}
-
- split_realm = str_list_make(tmp_ctx, dns_domain, ".");
+
+ split_realm = (const char **)str_list_make(tmp_ctx, dns_domain, ".");
if (!split_realm) {
talloc_free(tmp_ctx);
return NULL;
struct ldb_result *res_domain_ref;
char *escaped_domain = ldb_binary_encode_string(mem_ctx, domain_name);
/* find the domain's DN */
- int ret_domain = ldb_search_exp_fmt(ldb, mem_ctx,
+ int ret_domain = ldb_search(ldb, mem_ctx,
&res_domain_ref,
samdb_partitions_dn(ldb, mem_ctx),
LDB_SCOPE_ONELEVEL,
if (ret_domain != 0) {
return NULL;
}
-
+
if (res_domain_ref->count == 0) {
- ret_domain = ldb_search_exp_fmt(ldb, mem_ctx,
+ ret_domain = ldb_search(ldb, mem_ctx,
&res_domain_ref,
samdb_dns_domain_to_dn(ldb, mem_ctx, domain_name),
LDB_SCOPE_BASE,
if (ret_domain != 0) {
return NULL;
}
-
+
if (res_domain_ref->count == 1) {
return res_domain_ref->msgs[0]->dn;
}
return NULL;
}
-
+
if (res_domain_ref->count > 1) {
DEBUG(0,("Found %d records matching domain [%s]\n",
ret_domain, domain_name));
return NULL;
}
-
+
return samdb_result_dn(ldb, mem_ctx, res_domain_ref->msgs[0], "nCName", NULL);
}
git.samba.org / ira / wip.git / blobdiff