*/
#include "includes.h"
-#include "libcli/ldap/ldap_ndr.h"
#include "ldb_module.h"
-#include "librpc/gen_ndr/misc.h"
-#include "librpc/gen_ndr/samr.h"
#include "libcli/auth/libcli_auth.h"
-#include "libcli/security/security.h"
+#include "libcli/security/dom_sid.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
-#include "system/time.h"
#include "dsdb/samdb/samdb.h"
-#include "../libds/common/flags.h"
+#include "dsdb/samdb/ldb_modules/util.h"
#include "dsdb/samdb/ldb_modules/password_modules.h"
-#include "librpc/ndr/libndr.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "../lib/crypto/crypto.h"
#include "param/param.h"
+#include "lib/krb5_wrap/krb5_samba.h"
+
+#ifdef ENABLE_GPGME
+#undef class
+#include <gpgme.h>
+#endif
/* If we have decided there is a reason to work on this request, then
* setup all the password hash types correctly.
struct ldb_reply *search_res;
+ struct ldb_message *update_msg;
+
struct dsdb_control_password_change_status *status;
+ struct dsdb_control_password_change *change;
- bool pwd_reset;
+ const char **gpg_key_ids;
+ bool pwd_reset;
bool change_status;
bool hash_values;
- bool change_old_pw_checked;
+ bool userPassword;
+ bool update_password;
+ bool update_lastset;
+ bool pwd_last_set_bypass;
+ bool pwd_last_set_default;
+ bool smartcard_reset;
};
const char *sAMAccountName;
const char *user_principal_name;
bool is_computer;
+ bool is_krbtgt;
uint32_t restrictions;
} u;
} g;
};
+static int msg_find_old_and_new_pwd_val(const struct ldb_message *msg,
+ const char *name,
+ enum ldb_request_type operation,
+ const struct ldb_val **new_val,
+ const struct ldb_val **old_val);
+
+static int password_hash_bypass(struct ldb_module *module, struct ldb_request *request)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ const struct ldb_message *msg;
+ struct ldb_message_element *nte;
+ struct ldb_message_element *lme;
+ struct ldb_message_element *nthe;
+ struct ldb_message_element *lmhe;
+ struct ldb_message_element *sce;
+
+ switch (request->operation) {
+ case LDB_ADD:
+ msg = request->op.add.message;
+ break;
+ case LDB_MODIFY:
+ msg = request->op.mod.message;
+ break;
+ default:
+ return ldb_next_request(module, request);
+ }
+
+ /* nobody must touch password histories and 'supplementalCredentials' */
+ nte = dsdb_get_single_valued_attr(msg, "unicodePwd",
+ request->operation);
+ lme = dsdb_get_single_valued_attr(msg, "dBCSPwd",
+ request->operation);
+ nthe = dsdb_get_single_valued_attr(msg, "ntPwdHistory",
+ request->operation);
+ lmhe = dsdb_get_single_valued_attr(msg, "lmPwdHistory",
+ request->operation);
+ sce = dsdb_get_single_valued_attr(msg, "supplementalCredentials",
+ request->operation);
+
+#define CHECK_HASH_ELEMENT(e, min, max) do {\
+ if (e && e->num_values) { \
+ unsigned int _count; \
+ if (e->num_values != 1) { \
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, \
+ "num_values != 1"); \
+ } \
+ if ((e->values[0].length % 16) != 0) { \
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, \
+ "length % 16 != 0"); \
+ } \
+ _count = e->values[0].length / 16; \
+ if (_count < min) { \
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, \
+ "count < min"); \
+ } \
+ if (_count > max) { \
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, \
+ "count > max"); \
+ } \
+ } \
+} while (0)
+
+ CHECK_HASH_ELEMENT(nte, 1, 1);
+ CHECK_HASH_ELEMENT(lme, 1, 1);
+ CHECK_HASH_ELEMENT(nthe, 1, INT32_MAX);
+ CHECK_HASH_ELEMENT(lmhe, 1, INT32_MAX);
+
+ if (sce && sce->num_values) {
+ enum ndr_err_code ndr_err;
+ struct supplementalCredentialsBlob *scb;
+ struct supplementalCredentialsPackage *scpp = NULL;
+ struct supplementalCredentialsPackage *scpk = NULL;
+ struct supplementalCredentialsPackage *scpkn = NULL;
+ struct supplementalCredentialsPackage *scpct = NULL;
+ DATA_BLOB scpbp = data_blob_null;
+ DATA_BLOB scpbk = data_blob_null;
+ DATA_BLOB scpbkn = data_blob_null;
+ DATA_BLOB scpbct = data_blob_null;
+ DATA_BLOB blob;
+ uint32_t i;
+
+ if (sce->num_values != 1) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "num_values != 1");
+ }
+
+ scb = talloc_zero(request, struct supplementalCredentialsBlob);
+ if (!scb) {
+ return ldb_module_oom(module);
+ }
+
+ ndr_err = ndr_pull_struct_blob_all(&sce->values[0], scb, scb,
+ (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob_all");
+ }
+
+ if (scb->sub.num_packages < 2) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "num_packages < 2");
+ }
+
+ for (i=0; i < scb->sub.num_packages; i++) {
+ DATA_BLOB subblob;
+
+ subblob = strhex_to_data_blob(scb, scb->sub.packages[i].data);
+ if (subblob.data == NULL) {
+ return ldb_module_oom(module);
+ }
+
+ if (strcmp(scb->sub.packages[i].name, "Packages") == 0) {
+ if (scpp) {
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Packages twice");
+ }
+ scpp = &scb->sub.packages[i];
+ scpbp = subblob;
+ continue;
+ }
+ if (strcmp(scb->sub.packages[i].name, "Primary:Kerberos") == 0) {
+ if (scpk) {
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Primary:Kerberos twice");
+ }
+ scpk = &scb->sub.packages[i];
+ scpbk = subblob;
+ continue;
+ }
+ if (strcmp(scb->sub.packages[i].name, "Primary:Kerberos-Newer-Keys") == 0) {
+ if (scpkn) {
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Primary:Kerberos-Newer-Keys twice");
+ }
+ scpkn = &scb->sub.packages[i];
+ scpbkn = subblob;
+ continue;
+ }
+ if (strcmp(scb->sub.packages[i].name, "Primary:CLEARTEXT") == 0) {
+ if (scpct) {
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Primary:CLEARTEXT twice");
+ }
+ scpct = &scb->sub.packages[i];
+ scpbct = subblob;
+ continue;
+ }
+
+ data_blob_free(&subblob);
+ }
+
+ if (scpp == NULL) {
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Primary:Packages missing");
+ }
+
+ if (scpk == NULL) {
+ /*
+ * If Primary:Kerberos is missing w2k8r2 reboots
+ * when a password is changed.
+ */
+ return ldb_error(ldb,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ "Primary:Kerberos missing");
+ }
+
+ if (scpp) {
+ struct package_PackagesBlob *p;
+ uint32_t n;
+
+ p = talloc_zero(scb, struct package_PackagesBlob);
+ if (p == NULL) {
+ return ldb_module_oom(module);
+ }
+
+ ndr_err = ndr_pull_struct_blob(&scpbp, p, p,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PackagesBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob Packages");
+ }
+
+ if (p->names == NULL) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "Packages names == NULL");
+ }
+
+ for (n = 0; p->names[n]; n++) {
+ /* noop */
+ }
+
+ if (scb->sub.num_packages != (n + 1)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "Packages num_packages != num_names + 1");
+ }
+
+ talloc_free(p);
+ }
+
+ if (scpk) {
+ struct package_PrimaryKerberosBlob *k;
+
+ k = talloc_zero(scb, struct package_PrimaryKerberosBlob);
+ if (k == NULL) {
+ return ldb_module_oom(module);
+ }
+
+ ndr_err = ndr_pull_struct_blob(&scpbk, k, k,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob PrimaryKerberos");
+ }
+
+ if (k->version != 3) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos version != 3");
+ }
+
+ if (k->ctr.ctr3.salt.string == NULL) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos salt == NULL");
+ }
+
+ if (strlen(k->ctr.ctr3.salt.string) == 0) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos strlen(salt) == 0");
+ }
+
+ if (k->ctr.ctr3.num_keys != 2) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos num_keys != 2");
+ }
+
+ if (k->ctr.ctr3.num_old_keys > k->ctr.ctr3.num_keys) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos num_old_keys > num_keys");
+ }
+
+ if (k->ctr.ctr3.keys[0].keytype != ENCTYPE_DES_CBC_MD5) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos key[0] != DES_CBC_MD5");
+ }
+ if (k->ctr.ctr3.keys[1].keytype != ENCTYPE_DES_CBC_CRC) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos key[1] != DES_CBC_CRC");
+ }
+
+ if (k->ctr.ctr3.keys[0].value_len != 8) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos key[0] value_len != 8");
+ }
+ if (k->ctr.ctr3.keys[1].value_len != 8) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos key[1] value_len != 8");
+ }
+
+ for (i = 0; i < k->ctr.ctr3.num_old_keys; i++) {
+ if (k->ctr.ctr3.old_keys[i].keytype ==
+ k->ctr.ctr3.keys[i].keytype &&
+ k->ctr.ctr3.old_keys[i].value_len ==
+ k->ctr.ctr3.keys[i].value_len) {
+ continue;
+ }
+
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryKerberos old_keys type/value_len doesn't match");
+ }
+
+ talloc_free(k);
+ }
+
+ if (scpkn) {
+ struct package_PrimaryKerberosBlob *k;
+
+ k = talloc_zero(scb, struct package_PrimaryKerberosBlob);
+ if (k == NULL) {
+ return ldb_module_oom(module);
+ }
+
+ ndr_err = ndr_pull_struct_blob(&scpbkn, k, k,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob PrimaryKerberosNeverKeys");
+ }
+
+ if (k->version != 4) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNerverKeys version != 4");
+ }
+
+ if (k->ctr.ctr4.salt.string == NULL) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys salt == NULL");
+ }
+
+ if (strlen(k->ctr.ctr4.salt.string) == 0) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys strlen(salt) == 0");
+ }
+
+ if (k->ctr.ctr4.num_keys != 4) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys num_keys != 2");
+ }
+
+ if (k->ctr.ctr4.num_old_keys > k->ctr.ctr4.num_keys) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys num_old_keys > num_keys");
+ }
+
+ if (k->ctr.ctr4.num_older_keys > k->ctr.ctr4.num_old_keys) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys num_older_keys > num_old_keys");
+ }
+
+ if (k->ctr.ctr4.keys[0].keytype != ENCTYPE_AES256_CTS_HMAC_SHA1_96) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[0] != AES256");
+ }
+ if (k->ctr.ctr4.keys[1].keytype != ENCTYPE_AES128_CTS_HMAC_SHA1_96) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[1] != AES128");
+ }
+ if (k->ctr.ctr4.keys[2].keytype != ENCTYPE_DES_CBC_MD5) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[2] != DES_CBC_MD5");
+ }
+ if (k->ctr.ctr4.keys[3].keytype != ENCTYPE_DES_CBC_CRC) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[3] != DES_CBC_CRC");
+ }
+
+ if (k->ctr.ctr4.keys[0].value_len != 32) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[0] value_len != 32");
+ }
+ if (k->ctr.ctr4.keys[1].value_len != 16) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[1] value_len != 16");
+ }
+ if (k->ctr.ctr4.keys[2].value_len != 8) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[2] value_len != 8");
+ }
+ if (k->ctr.ctr4.keys[3].value_len != 8) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "KerberosNewerKeys key[3] value_len != 8");
+ }
+
+ /*
+ * TODO:
+ * Maybe we can check old and older keys here.
+ * But we need to do some tests, if the old keys
+ * can be taken from the PrimaryKerberos blob
+ * (with only des keys), when the domain was upgraded
+ * from w2k3 to w2k8.
+ */
+
+ talloc_free(k);
+ }
+
+ if (scpct) {
+ struct package_PrimaryCLEARTEXTBlob *ct;
+
+ ct = talloc_zero(scb, struct package_PrimaryCLEARTEXTBlob);
+ if (ct == NULL) {
+ return ldb_module_oom(module);
+ }
+
+ ndr_err = ndr_pull_struct_blob(&scpbct, ct, ct,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryCLEARTEXTBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob PrimaryCLEARTEXT");
+ }
+
+ if ((ct->cleartext.length % 2) != 0) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "PrimaryCLEARTEXT length % 2 != 0");
+ }
+
+ talloc_free(ct);
+ }
+
+ ndr_err = ndr_push_struct_blob(&blob, scb, scb,
+ (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "ndr_pull_struct_blob_all");
+ }
+
+ if (sce->values[0].length != blob.length) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "supplementalCredentialsBlob length differ");
+ }
+
+ if (memcmp(sce->values[0].data, blob.data, blob.length) != 0) {
+ return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION,
+ "supplementalCredentialsBlob memcmp differ");
+ }
+
+ talloc_free(scb);
+ }
+
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_bypass - validated\n");
+ return ldb_next_request(module, request);
+}
+
/* Get the NT hash, and fill it in as an entry in the password history,
and specify it into io->g.nt_hash */
{
struct ldb_context *ldb;
krb5_error_code krb5_ret;
- Principal *salt_principal;
- krb5_salt salt;
+ krb5_principal salt_principal;
+ krb5_data salt;
krb5_keyblock key;
krb5_data cleartext_data;
ldb = ldb_module_get_ctx(io->ac->module);
- cleartext_data.data = io->n.cleartext_utf8->data;
+ cleartext_data.data = (char *)io->n.cleartext_utf8->data;
cleartext_data.length = io->n.cleartext_utf8->length;
/* Many, many thanks to lukeh@padl.com for this
* algorithm, described in his Nov 10 2004 mail to
- * samba-technical@samba.org */
+ * samba-technical@lists.samba.org */
/*
* Determine a salting principal
return ldb_oom(ldb);
}
- krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
&salt_principal,
io->ac->status->domain_data.realm,
"host", saltbody, NULL);
p[0] = '\0';
}
- krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
&salt_principal,
io->ac->status->domain_data.realm,
user_principal_name, NULL);
} else {
- krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
&salt_principal,
io->ac->status->domain_data.realm,
io->u.sAMAccountName, NULL);
/*
* create salt from salt_principal
*/
- krb5_ret = krb5_get_pw_salt(io->smb_krb5_context->krb5_context,
+ krb5_ret = smb_krb5_get_pw_salt(io->smb_krb5_context->krb5_context,
salt_principal, &salt);
krb5_free_principal(io->smb_krb5_context->krb5_context, salt_principal);
if (krb5_ret) {
}
/* create a talloc copy */
io->g.salt = talloc_strndup(io->ac,
- (char *)salt.saltvalue.data,
- salt.saltvalue.length);
- krb5_free_salt(io->smb_krb5_context->krb5_context, salt);
+ (char *)salt.data,
+ salt.length);
+ smb_krb5_free_data_contents(io->smb_krb5_context->krb5_context, &salt);
if (!io->g.salt) {
return ldb_oom(ldb);
}
- salt.saltvalue.data = discard_const(io->g.salt);
- salt.saltvalue.length = strlen(io->g.salt);
+ /* now use the talloced copy of the salt */
+ salt.data = discard_const(io->g.salt);
+ salt.length = strlen(io->g.salt);
/*
* create ENCTYPE_AES256_CTS_HMAC_SHA1_96 key out of
* the salt and the cleartext password
*/
- krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_AES256_CTS_HMAC_SHA1_96,
- cleartext_data,
- salt,
- &key);
+ krb5_ret = smb_krb5_create_key_from_string(io->smb_krb5_context->krb5_context,
+ NULL,
+ &salt,
+ &cleartext_data,
+ ENCTYPE_AES256_CTS_HMAC_SHA1_96,
+ &key);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
return LDB_ERR_OPERATIONS_ERROR;
}
io->g.aes_256 = data_blob_talloc(io->ac,
- key.keyvalue.data,
- key.keyvalue.length);
+ KRB5_KEY_DATA(&key),
+ KRB5_KEY_LENGTH(&key));
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
if (!io->g.aes_256.data) {
return ldb_oom(ldb);
* create ENCTYPE_AES128_CTS_HMAC_SHA1_96 key out of
* the salt and the cleartext password
*/
- krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_AES128_CTS_HMAC_SHA1_96,
- cleartext_data,
- salt,
- &key);
+ krb5_ret = smb_krb5_create_key_from_string(io->smb_krb5_context->krb5_context,
+ NULL,
+ &salt,
+ &cleartext_data,
+ ENCTYPE_AES128_CTS_HMAC_SHA1_96,
+ &key);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
return LDB_ERR_OPERATIONS_ERROR;
}
io->g.aes_128 = data_blob_talloc(io->ac,
- key.keyvalue.data,
- key.keyvalue.length);
+ KRB5_KEY_DATA(&key),
+ KRB5_KEY_LENGTH(&key));
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
if (!io->g.aes_128.data) {
return ldb_oom(ldb);
* create ENCTYPE_DES_CBC_MD5 key out of
* the salt and the cleartext password
*/
- krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_DES_CBC_MD5,
- cleartext_data,
- salt,
- &key);
+ krb5_ret = smb_krb5_create_key_from_string(io->smb_krb5_context->krb5_context,
+ NULL,
+ &salt,
+ &cleartext_data,
+ ENCTYPE_DES_CBC_MD5,
+ &key);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
return LDB_ERR_OPERATIONS_ERROR;
}
io->g.des_md5 = data_blob_talloc(io->ac,
- key.keyvalue.data,
- key.keyvalue.length);
+ KRB5_KEY_DATA(&key),
+ KRB5_KEY_LENGTH(&key));
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
if (!io->g.des_md5.data) {
return ldb_oom(ldb);
* create ENCTYPE_DES_CBC_CRC key out of
* the salt and the cleartext password
*/
- krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_DES_CBC_CRC,
- cleartext_data,
- salt,
- &key);
+ krb5_ret = smb_krb5_create_key_from_string(io->smb_krb5_context->krb5_context,
+ NULL,
+ &salt,
+ &cleartext_data,
+ ENCTYPE_DES_CBC_CRC,
+ &key);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
return LDB_ERR_OPERATIONS_ERROR;
}
io->g.des_crc = data_blob_talloc(io->ac,
- key.keyvalue.data,
- key.keyvalue.length);
+ KRB5_KEY_DATA(&key),
+ KRB5_KEY_LENGTH(&key));
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
if (!io->g.des_crc.data) {
return ldb_oom(ldb);
}
for (i=0; i < ARRAY_SIZE(wdigest); i++) {
- struct MD5Context md5;
+ MD5_CTX md5;
MD5Init(&md5);
if (wdigest[i].nt4dom) {
MD5Update(&md5, wdigest[i].nt4dom->data, wdigest[i].nt4dom->length);
return LDB_SUCCESS;
}
+static int setup_primary_samba_gpg(struct setup_password_fields_io *io,
+ struct package_PrimarySambaGPGBlob *pgb)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+#ifdef ENABLE_GPGME
+ gpgme_error_t gret;
+ gpgme_ctx_t ctx = NULL;
+ size_t num_keys = str_list_length(io->ac->gpg_key_ids);
+ gpgme_key_t keys[num_keys+1];
+ size_t ki = 0;
+ size_t kr = 0;
+ gpgme_data_t plain_data = NULL;
+ gpgme_data_t crypt_data = NULL;
+ size_t crypt_length = 0;
+ char *crypt_mem = NULL;
+
+ gret = gpgme_new(&ctx);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ return ldb_module_operr(io->ac->module);
+ }
+
+ gpgme_set_armor(ctx, 1);
+
+ gret = gpgme_data_new_from_mem(&plain_data,
+ (const char *)io->n.cleartext_utf16->data,
+ io->n.cleartext_utf16->length,
+ 0 /* no copy */);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+ gret = gpgme_data_new(&crypt_data);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ for (ki = 0; ki < num_keys; ki++) {
+ const char *key_id = io->ac->gpg_key_ids[ki];
+ size_t len = strlen(key_id);
+
+ keys[ki] = NULL;
+
+ if (len < 16) {
+ ldb_debug(ldb, LDB_DEBUG_FATAL,
+ "%s:%s: ki[%zu] key_id[%s] strlen < 16, "
+ "please specify at least the 64bit key id\n",
+ __location__, __func__,
+ ki, key_id);
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ }
+ gpgme_data_release(crypt_data);
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ gret = gpgme_get_key(ctx, key_id, &keys[ki], 0 /* public key */);
+ if (gret != GPG_ERR_NO_ERROR) {
+ keys[ki] = NULL;
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: ki[%zu] key_id[%s] gret[%u] %s\n",
+ __location__, __func__,
+ ki, key_id,
+ gret, gpgme_strerror(gret));
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ }
+ gpgme_data_release(crypt_data);
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+ }
+ keys[ki] = NULL;
+
+ gret = gpgme_op_encrypt(ctx, keys,
+ GPGME_ENCRYPT_ALWAYS_TRUST,
+ plain_data, crypt_data);
+ gpgme_data_release(plain_data);
+ plain_data = NULL;
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ keys[kr] = NULL;
+ }
+ gpgme_release(ctx);
+ ctx = NULL;
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_data_release(crypt_data);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ crypt_mem = gpgme_data_release_and_get_mem(crypt_data, &crypt_length);
+ crypt_data = NULL;
+ if (crypt_mem == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ pgb->gpg_blob = data_blob_talloc(io->ac,
+ (const uint8_t *)crypt_mem,
+ crypt_length);
+ gpgme_free(crypt_mem);
+ crypt_mem = NULL;
+ crypt_length = 0;
+ if (pgb->gpg_blob.data == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ return LDB_SUCCESS;
+#else /* ENABLE_GPGME */
+ ldb_debug_set(ldb, LDB_DEBUG_FATAL,
+ "You configured 'password hash gpg key ids', "
+ "but GPGME support is missing. (%s:%d)",
+ __FILE__, __LINE__);
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+#endif /* else ENABLE_GPGME */
+}
+
static int setup_supplemental_field(struct setup_password_fields_io *io)
{
struct ldb_context *ldb;
struct supplementalCredentialsBlob scb;
- struct supplementalCredentialsBlob _old_scb;
struct supplementalCredentialsBlob *old_scb = NULL;
- /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest and CLEARTEXT) */
+ /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest, CLEARTEXT, SambaGPG) */
uint32_t num_names = 0;
- const char *names[1+4];
+ const char *names[1+5];
uint32_t num_packages = 0;
- struct supplementalCredentialsPackage packages[1+4];
+ struct supplementalCredentialsPackage packages[1+5];
/* Packages */
struct supplementalCredentialsPackage *pp = NULL;
struct package_PackagesBlob pb;
struct package_PrimaryCLEARTEXTBlob pcb;
DATA_BLOB pcb_blob;
char *pcb_hexstr;
+ /* Primary:SambaGPG */
+ const char **ng = NULL;
+ struct supplementalCredentialsPackage *pg = NULL;
+ struct package_PrimarySambaGPGBlob pgb;
+ DATA_BLOB pgb_blob;
+ char *pgb_hexstr;
int ret;
enum ndr_err_code ndr_err;
uint8_t zero16[16];
bool do_newer_keys = false;
bool do_cleartext = false;
+ bool do_samba_gpg = false;
ZERO_STRUCT(zero16);
ZERO_STRUCT(names);
+ ZERO_STRUCT(packages);
ldb = ldb_module_get_ctx(io->ac->module);
return LDB_SUCCESS;
}
- /* if there's an old supplementaCredentials blob then parse it */
+ /* if there's an old supplementaCredentials blob then use it */
if (io->o.supplemental) {
- ndr_err = ndr_pull_struct_blob_all(io->o.supplemental, io->ac,
- &_old_scb,
- (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to pull old supplementalCredentialsBlob: %s",
- nt_errstr(status));
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- if (_old_scb.sub.signature == SUPPLEMENTAL_CREDENTIALS_SIGNATURE) {
- old_scb = &_old_scb;
+ if (io->o.scb.sub.signature == SUPPLEMENTAL_CREDENTIALS_SIGNATURE) {
+ old_scb = &io->o.scb;
} else {
ldb_debug(ldb, LDB_DEBUG_ERROR,
- "setup_supplemental_field: "
- "supplementalCredentialsBlob signature[0x%04X] expected[0x%04X]",
- _old_scb.sub.signature, SUPPLEMENTAL_CREDENTIALS_SIGNATURE);
+ "setup_supplemental_field: "
+ "supplementalCredentialsBlob "
+ "signature[0x%04X] expected[0x%04X]",
+ io->o.scb.sub.signature,
+ SUPPLEMENTAL_CREDENTIALS_SIGNATURE);
}
}
/* Per MS-SAMR 3.1.1.8.11.6 we create AES keys if our domain functionality level is 2008 or higher */
do_cleartext = true;
}
+ if (io->ac->gpg_key_ids != NULL) {
+ do_samba_gpg = true;
+ }
+
/*
* The ordering is this
*
* Primary:Kerberos
* Primary:WDigest
* Primary:CLEARTEXT (optional)
+ * Primary:SambaGPG (optional)
*
* And the 'Packages' package is insert before the last
* other package.
+ *
+ * Note: it's important that Primary:SambaGPG is added as
+ * the last element. This is the indication that it matches
+ * the current password. When a password change happens on
+ * a Windows DC, it will keep the old Primary:SambaGPG value,
+ * but as the first element.
*/
if (do_newer_keys) {
/* Primary:Kerberos-Newer-Keys */
nk = &names[num_names++];
pk = &packages[num_packages++];
- if (!do_cleartext) {
+ if (!do_cleartext && !do_samba_gpg) {
/* Packages */
pp = &packages[num_packages++];
}
pd = &packages[num_packages++];
if (do_cleartext) {
- /* Packages */
- pp = &packages[num_packages++];
+ if (!do_samba_gpg) {
+ /* Packages */
+ pp = &packages[num_packages++];
+ }
/* Primary:CLEARTEXT */
nc = &names[num_names++];
pc = &packages[num_packages++];
}
+ if (do_samba_gpg) {
+ /* Packages */
+ pp = &packages[num_packages++];
+
+ /* Primary:SambaGPG */
+ ng = &names[num_names++];
+ pg = &packages[num_packages++];
+ }
+
if (pkn) {
/*
* setup 'Primary:Kerberos-Newer-Keys' element
pc->data = pcb_hexstr;
}
+ /*
+ * setup 'Primary:SambaGPG' element
+ */
+ if (pg) {
+ *ng = "SambaGPG";
+
+ ret = setup_primary_samba_gpg(io, &pgb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ndr_err = ndr_push_struct_blob(&pgb_blob, io->ac, &pgb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimarySambaGPGBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(ldb,
+ "setup_supplemental_field: failed to "
+ "push package_PrimarySambaGPGBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pgb_hexstr = data_blob_hex_string_upper(io->ac, &pgb_blob);
+ if (!pgb_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pg->name = "Primary:SambaGPG";
+ pg->reserved = 1;
+ pg->data = pgb_hexstr;
+ }
+
/*
* setup 'Packages' element
*/
* setup 'supplementalCredentials' value
*/
ZERO_STRUCT(scb);
+ scb.sub.signature = SUPPLEMENTAL_CREDENTIALS_SIGNATURE;
scb.sub.num_packages = num_packages;
scb.sub.packages = packages;
static int setup_last_set_field(struct setup_password_fields_io *io)
{
- /* set it as now */
- unix_to_nt_time(&io->g.last_set, time(NULL));
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ const struct ldb_message *msg = NULL;
+ struct timeval tv = { .tv_sec = 0 };
+ const struct ldb_val *old_val = NULL;
+ const struct ldb_val *new_val = NULL;
+ int ret;
+
+ switch (io->ac->req->operation) {
+ case LDB_ADD:
+ msg = io->ac->req->op.add.message;
+ break;
+ case LDB_MODIFY:
+ msg = io->ac->req->op.mod.message;
+ break;
+ default:
+ return LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
+
+ if (io->ac->pwd_last_set_bypass) {
+ struct ldb_message_element *el1 = NULL;
+ struct ldb_message_element *el2 = NULL;
+
+ if (msg == NULL) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ el1 = dsdb_get_single_valued_attr(msg, "pwdLastSet",
+ io->ac->req->operation);
+ if (el1 == NULL) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ el2 = ldb_msg_find_element(msg, "pwdLastSet");
+ if (el2 == NULL) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (el1 != el2) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ io->g.last_set = samdb_result_nttime(msg, "pwdLastSet", 0);
+ return LDB_SUCCESS;
+ }
+
+ ret = msg_find_old_and_new_pwd_val(msg, "pwdLastSet",
+ io->ac->req->operation,
+ &new_val, &old_val);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ if (old_val != NULL && new_val == NULL) {
+ ldb_set_errstring(ldb,
+ "'pwdLastSet' deletion is not allowed!");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ io->g.last_set = UINT64_MAX;
+ if (new_val != NULL) {
+ struct ldb_message *tmp_msg = NULL;
+
+ tmp_msg = ldb_msg_new(io->ac);
+ if (tmp_msg == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ if (old_val != NULL) {
+ NTTIME old_last_set = 0;
+
+ ret = ldb_msg_add_value(tmp_msg, "oldval",
+ old_val, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ old_last_set = samdb_result_nttime(tmp_msg,
+ "oldval",
+ 1);
+ if (io->u.pwdLastSet != old_last_set) {
+ return dsdb_module_werror(io->ac->module,
+ LDB_ERR_NO_SUCH_ATTRIBUTE,
+ WERR_DS_CANT_REM_MISSING_ATT_VAL,
+ "setup_last_set_field: old pwdLastSet "
+ "value not found!");
+ }
+ }
+
+ ret = ldb_msg_add_value(tmp_msg, "newval",
+ new_val, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ io->g.last_set = samdb_result_nttime(tmp_msg,
+ "newval",
+ 1);
+ } else if (ldb_msg_find_element(msg, "pwdLastSet")) {
+ ldb_set_errstring(ldb,
+ "'pwdLastSet' deletion is not allowed!");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ } else if (io->ac->smartcard_reset) {
+ /*
+ * adding UF_SMARTCARD_REQUIRED doesn't update
+ * pwdLastSet implicitly.
+ */
+ io->ac->update_lastset = false;
+ }
+
+ /* only 0 or -1 (0xFFFFFFFFFFFFFFFF) are allowed */
+ switch (io->g.last_set) {
+ case 0:
+ if (!io->ac->pwd_last_set_default) {
+ break;
+ }
+ if (!io->ac->update_password) {
+ break;
+ }
+ /* fall through */
+ case UINT64_MAX:
+ if (!io->ac->update_password &&
+ io->u.pwdLastSet != 0 &&
+ io->u.pwdLastSet != UINT64_MAX)
+ {
+ /*
+ * Just setting pwdLastSet to -1, while not changing
+ * any password field has no effect if pwdLastSet
+ * is already non-zero.
+ */
+ io->ac->update_lastset = false;
+ break;
+ }
+ /* -1 means set it as now */
+ GetTimeOfDay(&tv);
+ io->g.last_set = timeval_to_nttime(&tv);
+ break;
+ default:
+ return dsdb_module_werror(io->ac->module,
+ LDB_ERR_OTHER,
+ WERR_INVALID_PARAMETER,
+ "setup_last_set_field: "
+ "pwdLastSet must be 0 or -1 only!");
+ }
+
+ if (io->ac->req->operation == LDB_ADD) {
+ /*
+ * We always need to store the value on add
+ * operations.
+ */
+ return LDB_SUCCESS;
+ }
+
+ if (io->g.last_set == io->u.pwdLastSet) {
+ /*
+ * Just setting pwdLastSet to 0, is no-op if it's already 0.
+ */
+ io->ac->update_lastset = false;
+ }
return LDB_SUCCESS;
}
ldb = ldb_module_get_ctx(io->ac->module);
if (g->cleartext_utf8) {
- char **cleartext_utf16_str;
struct ldb_val *cleartext_utf16_blob;
- size_t converted_pw_len;
cleartext_utf16_blob = talloc(io->ac, struct ldb_val);
if (!cleartext_utf16_blob) {
return ldb_oom(ldb);
}
if (!convert_string_talloc(io->ac,
- CH_UTF8, CH_UTF16,
- g->cleartext_utf8->data,
- g->cleartext_utf8->length,
- (void *)&cleartext_utf16_str,
- &converted_pw_len, false)) {
- ldb_asprintf_errstring(ldb,
- "setup_password_fields: "
- "failed to generate UTF16 password from cleartext UTF8 password");
- return LDB_ERR_OPERATIONS_ERROR;
+ CH_UTF8, CH_UTF16,
+ g->cleartext_utf8->data,
+ g->cleartext_utf8->length,
+ (void *)&cleartext_utf16_blob->data,
+ &cleartext_utf16_blob->length)) {
+ if (g->cleartext_utf8->length != 0) {
+ talloc_free(cleartext_utf16_blob);
+ ldb_asprintf_errstring(ldb,
+ "setup_password_fields: "
+ "failed to generate UTF16 password from cleartext UTF8 one for user '%s'!",
+ io->u.sAMAccountName);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ } else {
+ /* passwords with length "0" are valid! */
+ cleartext_utf16_blob->data = NULL;
+ cleartext_utf16_blob->length = 0;
+ }
}
- *cleartext_utf16_blob = data_blob_const(cleartext_utf16_str,
- converted_pw_len);
g->cleartext_utf16 = cleartext_utf16_blob;
} else if (g->cleartext_utf16) {
- char *cleartext_utf8_str;
struct ldb_val *cleartext_utf8_blob;
- size_t converted_pw_len;
cleartext_utf8_blob = talloc(io->ac, struct ldb_val);
if (!cleartext_utf8_blob) {
return ldb_oom(ldb);
}
if (!convert_string_talloc(io->ac,
- CH_UTF16MUNGED, CH_UTF8,
- g->cleartext_utf16->data,
- g->cleartext_utf16->length,
- (void *)&cleartext_utf8_str,
- &converted_pw_len, false)) {
- /* We can't bail out entirely, as these unconvertable passwords are frustratingly valid */
- talloc_free(cleartext_utf8_blob);
- } else {
- *cleartext_utf8_blob = data_blob_const(cleartext_utf8_str,
- converted_pw_len);
- g->cleartext_utf8 = cleartext_utf8_blob;
+ CH_UTF16MUNGED, CH_UTF8,
+ g->cleartext_utf16->data,
+ g->cleartext_utf16->length,
+ (void *)&cleartext_utf8_blob->data,
+ &cleartext_utf8_blob->length)) {
+ if (g->cleartext_utf16->length != 0) {
+ /* We must bail out here, the input wasn't even
+ * a multiple of 2 bytes */
+ talloc_free(cleartext_utf8_blob);
+ ldb_asprintf_errstring(ldb,
+ "setup_password_fields: "
+ "failed to generate UTF8 password from cleartext UTF 16 one for user '%s' - the latter had odd length (length must be a multiple of 2)!",
+ io->u.sAMAccountName);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ } else {
+ /* passwords with length "0" are valid! */
+ cleartext_utf8_blob->data = NULL;
+ cleartext_utf8_blob->length = 0;
+ }
}
+ g->cleartext_utf8 = cleartext_utf8_blob;
}
if (g->cleartext_utf16) {
struct loadparm_context);
int ret;
+ ret = setup_last_set_field(io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ if (!io->ac->update_password) {
+ return LDB_SUCCESS;
+ }
+
/* transform the old password (for password changes) */
ret = setup_given_passwords(io, &io->og);
if (ret != LDB_SUCCESS) {
return ret;
}
- ret = setup_last_set_field(io);
- if (ret != LDB_SUCCESS) {
- return ret;
+ return LDB_SUCCESS;
+}
+
+static int setup_smartcard_reset(struct setup_password_fields_io *io)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ struct loadparm_context *lp_ctx = talloc_get_type(
+ ldb_get_opaque(ldb, "loadparm"), struct loadparm_context);
+ struct supplementalCredentialsBlob scb = { .__ndr_size = 0 };
+ enum ndr_err_code ndr_err;
+
+ if (!io->ac->smartcard_reset) {
+ return LDB_SUCCESS;
+ }
+
+ io->g.nt_hash = talloc(io->ac, struct samr_Password);
+ if (io->g.nt_hash == NULL) {
+ return ldb_module_oom(io->ac->module);
}
+ generate_secret_buffer(io->g.nt_hash->hash,
+ sizeof(io->g.nt_hash->hash));
+ io->g.nt_history_len = 0;
+ if (lpcfg_lanman_auth(lp_ctx)) {
+ io->g.lm_hash = talloc(io->ac, struct samr_Password);
+ if (io->g.lm_hash == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+ generate_secret_buffer(io->g.lm_hash->hash,
+ sizeof(io->g.lm_hash->hash));
+ } else {
+ io->g.lm_hash = NULL;
+ }
+ io->g.lm_history_len = 0;
+
+ /*
+ * We take the "old" value and store it
+ * with num_packages = 0.
+ *
+ * On "add" we have scb.sub.signature == 0, which
+ * results in:
+ *
+ * [0000] 00 00 00 00 00 00 00 00 00 00 00 00 00
+ *
+ * On modify it's likely to be scb.sub.signature ==
+ * SUPPLEMENTAL_CREDENTIALS_SIGNATURE (0x0050), which results in
+ * something like:
+ *
+ * [0000] 00 00 00 00 62 00 00 00 00 00 00 00 20 00 20 00
+ * [0010] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0020] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0030] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0040] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0050] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0060] 20 00 20 00 20 00 20 00 20 00 20 00 50 00 00
+ *
+ * See https://bugzilla.samba.org/show_bug.cgi?id=11441
+ * and ndr_{push,pull}_supplementalCredentialsSubBlob().
+ */
+ scb = io->o.scb;
+ scb.sub.num_packages = 0;
+
+ /*
+ * setup 'supplementalCredentials' value without packages
+ */
+ ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
+ &scb,
+ (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(ldb,
+ "setup_smartcard_reset: "
+ "failed to push supplementalCredentialsBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ io->ac->update_password = true;
return LDB_SUCCESS;
}
+static int make_error_and_update_badPwdCount(struct setup_password_fields_io *io)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ struct ldb_message *mod_msg = NULL;
+ NTSTATUS status;
+ int ret;
+
+ status = dsdb_update_bad_pwd_count(io->ac, ldb,
+ io->ac->search_res->message,
+ io->ac->dom_res->message,
+ &mod_msg);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto done;
+ }
+
+ if (mod_msg == NULL) {
+ goto done;
+ }
+
+ /*
+ * OK, horrible semantics ahead.
+ *
+ * - We need to abort any existing transaction
+ * - create a transaction arround the badPwdCount update
+ * - re-open the transaction so the upper layer
+ * doesn't know what happened.
+ *
+ * This is needed because returning an error to the upper
+ * layer will cancel the transaction and undo the badPwdCount
+ * update.
+ */
+
+ /*
+ * Checking errors here is a bit pointless.
+ * What can we do if we can't end the transaction?
+ */
+ ret = ldb_next_del_trans(io->ac->module);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_FATAL,
+ "Failed to abort transaction prior to update of badPwdCount of %s: %s",
+ ldb_dn_get_linearized(io->ac->search_res->message->dn),
+ ldb_errstring(ldb));
+ /*
+ * just return the original error
+ */
+ goto done;
+ }
+
+ /* Likewise, what should we do if we can't open a new transaction? */
+ ret = ldb_next_start_trans(io->ac->module);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Failed to open transaction to update badPwdCount of %s: %s",
+ ldb_dn_get_linearized(io->ac->search_res->message->dn),
+ ldb_errstring(ldb));
+ /*
+ * just return the original error
+ */
+ goto done;
+ }
+
+ ret = dsdb_module_modify(io->ac->module, mod_msg,
+ DSDB_FLAG_NEXT_MODULE,
+ io->ac->req);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Failed to update badPwdCount of %s: %s",
+ ldb_dn_get_linearized(io->ac->search_res->message->dn),
+ ldb_errstring(ldb));
+ /*
+ * We can only ignore this...
+ */
+ }
+
+ ret = ldb_next_end_trans(io->ac->module);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Failed to close transaction to update badPwdCount of %s: %s",
+ ldb_dn_get_linearized(io->ac->search_res->message->dn),
+ ldb_errstring(ldb));
+ /*
+ * We can only ignore this...
+ */
+ }
+
+ ret = ldb_next_start_trans(io->ac->module);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Failed to open transaction after update of badPwdCount of %s: %s",
+ ldb_dn_get_linearized(io->ac->search_res->message->dn),
+ ldb_errstring(ldb));
+ /*
+ * We can only ignore this...
+ */
+ }
+
+done:
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ ldb_asprintf_errstring(ldb,
+ "%08X: %s - check_password_restrictions: "
+ "The old password specified doesn't match!",
+ W_ERROR_V(WERR_INVALID_PASSWORD),
+ ldb_strerror(ret));
+ return ret;
+}
+
static int check_password_restrictions(struct setup_password_fields_io *io)
{
- struct ldb_context *ldb;
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
int ret;
- enum samr_ValidationStatus stat;
+ struct loadparm_context *lp_ctx =
+ lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
+ struct loadparm_context);
- ldb = ldb_module_get_ctx(io->ac->module);
+ if (!io->ac->update_password) {
+ return LDB_SUCCESS;
+ }
/* First check the old password is correct, for password changes */
- if (!io->ac->pwd_reset && !io->ac->change_old_pw_checked) {
- /* we need to old nt or lm hash given by the client */
+ if (!io->ac->pwd_reset) {
+ bool nt_hash_checked = false;
+
+ /* we need the old nt or lm hash given by the client */
if (!io->og.nt_hash && !io->og.lm_hash) {
ldb_asprintf_errstring(ldb,
"check_password_restrictions: "
- "You need to provide the old password "
- "in order to change your password!");
+ "You need to provide the old password in order "
+ "to change it!");
return LDB_ERR_UNWILLING_TO_PERFORM;
}
+ /* The password modify through the NT hash is encouraged and
+ has no problems at all */
if (io->og.nt_hash) {
- if (!io->o.nt_hash) {
- ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "There's no old nt_hash, which is needed "
- "in order to change your password!");
- return LDB_ERR_UNWILLING_TO_PERFORM;
+ if (!io->o.nt_hash || memcmp(io->og.nt_hash->hash, io->o.nt_hash->hash, 16) != 0) {
+ return make_error_and_update_badPwdCount(io);
}
- /* The password modify through the NT hash is encouraged
- and has no problems at all */
- if (memcmp(io->og.nt_hash->hash, io->o.nt_hash->hash, 16) != 0) {
- ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "The old password specified doesn't match!");
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
- } else if (io->og.lm_hash) {
- if (!io->o.lm_hash) {
- ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "There's no old lm_hash, which is needed "
- "in order to change your password!");
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
+ nt_hash_checked = true;
+ }
- if (memcmp(io->og.lm_hash->hash, io->o.lm_hash->hash, 16) != 0) {
- ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "The old password specified doesn't match!");
- return LDB_ERR_UNWILLING_TO_PERFORM;
+ /* But it is also possible to change a password by the LM hash
+ * alone for compatibility reasons. This check is optional if
+ * the NT hash was already checked - otherwise it's mandatory.
+ * (as the SAMR operations request it). */
+ if (io->og.lm_hash) {
+ if ((!io->o.lm_hash && !nt_hash_checked)
+ || (io->o.lm_hash && memcmp(io->og.lm_hash->hash, io->o.lm_hash->hash, 16) != 0)) {
+ return make_error_and_update_badPwdCount(io);
}
}
}
return LDB_SUCCESS;
}
+ /* Password minimum age: yes, this is a minus. The ages are in negative 100nsec units! */
+ if ((io->u.pwdLastSet - io->ac->status->domain_data.minPwdAge > io->g.last_set) &&
+ !io->ac->pwd_reset)
+ {
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ ldb_asprintf_errstring(ldb,
+ "%08X: %s - check_password_restrictions: "
+ "password is too young to change!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
+ return ret;
+ }
+
/*
* Fundamental password checks done by the call
* "samdb_check_password".
* It is also in use by "dcesrv_samr_ValidatePassword".
*/
if (io->n.cleartext_utf8 != NULL) {
- stat = samdb_check_password(io->n.cleartext_utf8,
- io->ac->status->domain_data.pwdProperties,
- io->ac->status->domain_data.minPwdLength);
- switch (stat) {
+ enum samr_ValidationStatus vstat;
+ vstat = samdb_check_password(io->ac, lp_ctx,
+ io->n.cleartext_utf8,
+ io->ac->status->domain_data.pwdProperties,
+ io->ac->status->domain_data.minPwdLength);
+ switch (vstat) {
case SAMR_VALIDATION_STATUS_SUCCESS:
/* perfect -> proceed! */
break;
case SAMR_VALIDATION_STATUS_PWD_TOO_SHORT:
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "the password is too short. It should be equal or longer than %i characters!",
+ "%08X: %s - check_password_restrictions: "
+ "the password is too short. It should be equal or longer than %u characters!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret),
io->ac->status->domain_data.minPwdLength);
-
io->ac->status->reject_reason = SAM_PWD_CHANGE_PASSWORD_TOO_SHORT;
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return ret;
case SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH:
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "the password does not meet the complexity criterias!");
+ "%08X: %s - check_password_restrictions: "
+ "the password does not meet the complexity criteria!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_NOT_COMPLEX;
-
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return ret;
default:
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "the password doesn't fit by a certain reason!");
-
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ "%08X: %s - check_password_restrictions: "
+ "the password doesn't fit due to a miscellaneous restriction!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
+ return ret;
}
}
for (i = 0; i < io->o.nt_history_len; i++) {
ret = memcmp(io->n.nt_hash, io->o.nt_history[i].hash, 16);
if (ret == 0) {
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "the password was already used (in history)!");
-
+ "%08X: %s - check_password_restrictions: "
+ "the password was already used (in history)!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_PWD_IN_HISTORY;
-
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return ret;
}
}
}
/* checks the LM hash password history */
for (i = 0; i < io->o.lm_history_len; i++) {
- ret = memcmp(io->n.nt_hash, io->o.lm_history[i].hash, 16);
+ ret = memcmp(io->n.lm_hash, io->o.lm_history[i].hash, 16);
if (ret == 0) {
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "the password was already used (in history)!");
-
+ "%08X: %s - check_password_restrictions: "
+ "the password was already used (in history)!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_PWD_IN_HISTORY;
-
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return ret;
}
}
}
/* are all password changes disallowed? */
if (io->ac->status->domain_data.pwdProperties & DOMAIN_REFUSE_PASSWORD_CHANGE) {
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "password changes disabled!");
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ "%08X: %s - check_password_restrictions: "
+ "password changes disabled!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
+ return ret;
}
/* can this user change the password? */
if (io->u.userAccountControl & UF_PASSWD_CANT_CHANGE) {
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "password can't be changed on this account!");
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ "%08X: %s - check_password_restrictions: "
+ "password can't be changed on this account!",
+ W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ ldb_strerror(ret));
+ return ret;
}
- /* Password minimum age: yes, this is a minus. The ages are in negative 100nsec units! */
- if (io->u.pwdLastSet - io->ac->status->domain_data.minPwdAge > io->g.last_set) {
- ldb_asprintf_errstring(ldb,
- "check_password_restrictions: "
- "password is too young to change!");
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return LDB_SUCCESS;
+}
+
+static int update_final_msg(struct setup_password_fields_io *io)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ int ret;
+ int el_flags = 0;
+ bool update_password = io->ac->update_password;
+ bool update_scb = io->ac->update_password;
+
+ /*
+ * If we add a user without initial password,
+ * we need to add replication meta data for
+ * following attributes:
+ * - unicodePwd
+ * - dBCSPwd
+ * - ntPwdHistory
+ * - lmPwdHistory
+ *
+ * If we add a user with initial password or a
+ * password is changed of an existing user,
+ * we need to replace the following attributes
+ * with a forced meta data update, e.g. also
+ * when updating an empty attribute with an empty value:
+ * - unicodePwd
+ * - dBCSPwd
+ * - ntPwdHistory
+ * - lmPwdHistory
+ * - supplementalCredentials
+ */
+
+ switch (io->ac->req->operation) {
+ case LDB_ADD:
+ update_password = true;
+ el_flags |= DSDB_FLAG_INTERNAL_FORCE_META_DATA;
+ break;
+ case LDB_MODIFY:
+ el_flags |= LDB_FLAG_MOD_REPLACE;
+ el_flags |= DSDB_FLAG_INTERNAL_FORCE_META_DATA;
+ break;
+ default:
+ return ldb_module_operr(io->ac->module);
+ }
+
+ if (update_password) {
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "unicodePwd",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "dBCSPwd",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "ntPwdHistory",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "lmPwdHistory",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (update_scb) {
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "supplementalCredentials",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->ac->update_lastset) {
+ ret = ldb_msg_add_empty(io->ac->update_msg,
+ "pwdLastSet",
+ el_flags, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ if (io->g.nt_hash != NULL) {
+ ret = samdb_msg_add_hash(ldb, io->ac,
+ io->ac->update_msg,
+ "unicodePwd",
+ io->g.nt_hash);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->g.lm_hash != NULL) {
+ ret = samdb_msg_add_hash(ldb, io->ac,
+ io->ac->update_msg,
+ "dBCSPwd",
+ io->g.lm_hash);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->g.nt_history_len > 0) {
+ ret = samdb_msg_add_hashes(ldb, io->ac,
+ io->ac->update_msg,
+ "ntPwdHistory",
+ io->g.nt_history,
+ io->g.nt_history_len);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->g.lm_history_len > 0) {
+ ret = samdb_msg_add_hashes(ldb, io->ac,
+ io->ac->update_msg,
+ "lmPwdHistory",
+ io->g.lm_history,
+ io->g.lm_history_len);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->g.supplemental.length > 0) {
+ ret = ldb_msg_add_value(io->ac->update_msg,
+ "supplementalCredentials",
+ &io->g.supplemental, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io->ac->update_lastset) {
+ ret = samdb_msg_add_uint64(ldb, io->ac,
+ io->ac->update_msg,
+ "pwdLastSet",
+ io->g.last_set);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+/*
+ * This is intended for use by the "password_hash" module since there
+ * password changes can be specified through one message element with the
+ * new password (to set) and another one with the old password (to unset).
+ *
+ * The first which sets a password (new value) can have flags
+ * (LDB_FLAG_MOD_ADD, LDB_FLAG_MOD_REPLACE) but also none (on "add" operations
+ * for entries). The latter (old value) has always specified
+ * LDB_FLAG_MOD_DELETE.
+ *
+ * Returns LDB_ERR_CONSTRAINT_VIOLATION and LDB_ERR_UNWILLING_TO_PERFORM if
+ * matching message elements are malformed in respect to the set/change rules.
+ * Otherwise it returns LDB_SUCCESS.
+ */
+static int msg_find_old_and_new_pwd_val(const struct ldb_message *msg,
+ const char *name,
+ enum ldb_request_type operation,
+ const struct ldb_val **new_val,
+ const struct ldb_val **old_val)
+{
+ unsigned int i;
+
+ *new_val = NULL;
+ *old_val = NULL;
+
+ if (msg == NULL) {
+ return LDB_SUCCESS;
+ }
+
+ for (i = 0; i < msg->num_elements; i++) {
+ if (ldb_attr_cmp(msg->elements[i].name, name) != 0) {
+ continue;
+ }
+
+ if ((operation == LDB_MODIFY) &&
+ (LDB_FLAG_MOD_TYPE(msg->elements[i].flags) == LDB_FLAG_MOD_DELETE)) {
+ /* 0 values are allowed */
+ if (msg->elements[i].num_values == 1) {
+ *old_val = &msg->elements[i].values[0];
+ } else if (msg->elements[i].num_values > 1) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ } else if ((operation == LDB_MODIFY) &&
+ (LDB_FLAG_MOD_TYPE(msg->elements[i].flags) == LDB_FLAG_MOD_REPLACE)) {
+ if (msg->elements[i].num_values > 0) {
+ *new_val = &msg->elements[i].values[msg->elements[i].num_values - 1];
+ } else {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ } else {
+ /* Add operations and LDB_FLAG_MOD_ADD */
+ if (msg->elements[i].num_values > 0) {
+ *new_val = &msg->elements[i].values[msg->elements[i].num_values - 1];
+ } else {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ }
}
return LDB_SUCCESS;
}
static int setup_io(struct ph_context *ac,
- const struct ldb_message *orig_msg,
- const struct ldb_message *searched_msg,
+ const struct ldb_message *client_msg,
+ const struct ldb_message *existing_msg,
struct setup_password_fields_io *io)
{
const struct ldb_val *quoted_utf16, *old_quoted_utf16, *lm_hash, *old_lm_hash;
struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
- struct loadparm_context *lp_ctx =
- lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
- struct loadparm_context);
+ struct loadparm_context *lp_ctx = talloc_get_type(
+ ldb_get_opaque(ldb, "loadparm"), struct loadparm_context);
int ret;
+ const struct ldb_message *info_msg = NULL;
+ struct dom_sid *account_sid = NULL;
+ int rodc_krbtgt = 0;
ZERO_STRUCTP(io);
/* Some operations below require kerberos contexts */
+ if (existing_msg != NULL) {
+ /*
+ * This is a modify operation
+ */
+ info_msg = existing_msg;
+ } else {
+ /*
+ * This is an add operation
+ */
+ info_msg = client_msg;
+ }
+
if (smb_krb5_init_context(ac,
- ldb_get_event_context(ldb),
(struct loadparm_context *)ldb_get_opaque(ldb, "loadparm"),
&io->smb_krb5_context) != 0) {
return ldb_operr(ldb);
io->ac = ac;
- io->u.userAccountControl = samdb_result_uint(searched_msg, "userAccountControl", 0);
- io->u.pwdLastSet = samdb_result_nttime(searched_msg, "pwdLastSet", 0);
- io->u.sAMAccountName = samdb_result_string(searched_msg, "sAMAccountName", NULL);
- io->u.user_principal_name = samdb_result_string(searched_msg, "userPrincipalName", NULL);
- io->u.is_computer = ldb_msg_check_string_attribute(searched_msg, "objectClass", "computer");
+ io->u.userAccountControl = ldb_msg_find_attr_as_uint(info_msg,
+ "userAccountControl", 0);
+ if (info_msg == existing_msg) {
+ /*
+ * We only take pwdLastSet from the existing object
+ * otherwise we leave it as 0.
+ *
+ * If no attribute is available, e.g. on deleted objects
+ * we remember that as UINT64_MAX.
+ */
+ io->u.pwdLastSet = samdb_result_nttime(info_msg, "pwdLastSet",
+ UINT64_MAX);
+ }
+ io->u.sAMAccountName = ldb_msg_find_attr_as_string(info_msg,
+ "sAMAccountName", NULL);
+ io->u.user_principal_name = ldb_msg_find_attr_as_string(info_msg,
+ "userPrincipalName", NULL);
+ io->u.is_computer = ldb_msg_check_string_attribute(info_msg, "objectClass", "computer");
+
+ /* Ensure it has an objectSID too */
+ account_sid = samdb_result_dom_sid(ac, info_msg, "objectSid");
+ if (account_sid != NULL) {
+ NTSTATUS status;
+ uint32_t rid = 0;
+
+ status = dom_sid_split_rid(account_sid, account_sid, NULL, &rid);
+ if (NT_STATUS_IS_OK(status)) {
+ if (rid == DOMAIN_RID_KRBTGT) {
+ io->u.is_krbtgt = true;
+ }
+ }
+ }
+
+ rodc_krbtgt = ldb_msg_find_attr_as_int(info_msg,
+ "msDS-SecondaryKrbTgtNumber", 0);
+ if (rodc_krbtgt != 0) {
+ io->u.is_krbtgt = true;
+ }
if (io->u.sAMAccountName == NULL) {
ldb_asprintf_errstring(ldb,
"setup_io: sAMAccountName attribute is missing on %s for attempted password set/change",
- ldb_dn_get_linearized(searched_msg->dn));
+ ldb_dn_get_linearized(info_msg->dn));
return LDB_ERR_CONSTRAINT_VIOLATION;
}
+ if (io->u.userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
+ struct ldb_control *permit_trust = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PERMIT_INTERDOMAIN_TRUST_UAC_OID);
+
+ if (permit_trust == NULL) {
+ ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
+ ldb_asprintf_errstring(ldb,
+ "%08X: %s - setup_io: changing the interdomain trust password "
+ "on %s not allowed via LDAP. Use LSA or NETLOGON",
+ W_ERROR_V(WERR_ACCESS_DENIED),
+ ldb_strerror(ret),
+ ldb_dn_get_linearized(info_msg->dn));
+ return ret;
+ }
+ }
+
/* Only non-trust accounts have restrictions (possibly this test is the
* wrong way around, but we like to be restrictive if possible */
io->u.restrictions = !(io->u.userAccountControl
& (UF_INTERDOMAIN_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT
| UF_SERVER_TRUST_ACCOUNT));
- if ((io->u.userAccountControl & UF_PASSWD_NOTREQD) != 0) {
- /* see [MS-ADTS] 2.2.15 */
+ if (io->u.is_krbtgt) {
io->u.restrictions = 0;
+ io->ac->status->domain_data.pwdHistoryLength =
+ MAX(io->ac->status->domain_data.pwdHistoryLength, 3);
}
- ret = samdb_msg_find_old_and_new_ldb_val(orig_msg, "userPassword",
- &io->n.cleartext_utf8, &io->og.cleartext_utf8);
- if (ret != LDB_SUCCESS) {
- ldb_asprintf_errstring(ldb,
- "setup_io: "
- "it's only allowed to set the old password once!");
- return ret;
+ if (ac->userPassword) {
+ ret = msg_find_old_and_new_pwd_val(client_msg, "userPassword",
+ ac->req->operation,
+ &io->n.cleartext_utf8,
+ &io->og.cleartext_utf8);
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb,
+ "setup_io: "
+ "it's only allowed to set the old password once!");
+ return ret;
+ }
+ }
+
+ if (io->n.cleartext_utf8 != NULL) {
+ struct ldb_val *cleartext_utf8_blob;
+ char *p;
+
+ cleartext_utf8_blob = talloc(io->ac, struct ldb_val);
+ if (!cleartext_utf8_blob) {
+ return ldb_oom(ldb);
+ }
+
+ *cleartext_utf8_blob = *io->n.cleartext_utf8;
+
+ /* make sure we have a null terminated string */
+ p = talloc_strndup(cleartext_utf8_blob,
+ (const char *)io->n.cleartext_utf8->data,
+ io->n.cleartext_utf8->length);
+ if ((p == NULL) && (io->n.cleartext_utf8->length > 0)) {
+ return ldb_oom(ldb);
+ }
+ cleartext_utf8_blob->data = (uint8_t *)p;
+
+ io->n.cleartext_utf8 = cleartext_utf8_blob;
}
- ret = samdb_msg_find_old_and_new_ldb_val(orig_msg, "clearTextPassword",
- &io->n.cleartext_utf16, &io->og.cleartext_utf16);
+ ret = msg_find_old_and_new_pwd_val(client_msg, "clearTextPassword",
+ ac->req->operation,
+ &io->n.cleartext_utf16,
+ &io->og.cleartext_utf16);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"setup_io: "
that would then be treated as a UTF16 password rather than
a nthash */
- ret = samdb_msg_find_old_and_new_ldb_val(orig_msg, "unicodePwd",
- "ed_utf16, &old_quoted_utf16);
+ ret = msg_find_old_and_new_pwd_val(client_msg, "unicodePwd",
+ ac->req->operation,
+ "ed_utf16,
+ &old_quoted_utf16);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"setup_io: "
}
/* Checks and converts the actual "unicodePwd" attribute */
- if (quoted_utf16 &&
+ if (!ac->hash_values &&
+ quoted_utf16 &&
quoted_utf16->length >= 4 &&
quoted_utf16->data[0] == '"' &&
quoted_utf16->data[1] == 0 &&
}
/* Checks and converts the previous "unicodePwd" attribute */
- if (old_quoted_utf16 &&
+ if (!ac->hash_values &&
+ old_quoted_utf16 &&
old_quoted_utf16->length >= 4 &&
old_quoted_utf16->data[0] == '"' &&
old_quoted_utf16->data[1] == 0 &&
/* Handles the "dBCSPwd" attribute (LM hash) */
io->n.lm_hash = NULL; io->og.lm_hash = NULL;
- ret = samdb_msg_find_old_and_new_ldb_val(orig_msg, "dBCSPwd",
- &lm_hash, &old_lm_hash);
+ ret = msg_find_old_and_new_pwd_val(client_msg, "dBCSPwd",
+ ac->req->operation,
+ &lm_hash, &old_lm_hash);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"setup_io: "
sizeof(io->og.lm_hash->hash)));
}
+ /*
+ * Handles the password change control if it's specified. It has the
+ * precedance and overrides already specified old password values of
+ * change requests (but that shouldn't happen since the control is
+ * fully internal and only used in conjunction with replace requests!).
+ */
+ if (ac->change != NULL) {
+ io->og.nt_hash = NULL;
+ if (ac->change->old_nt_pwd_hash != NULL) {
+ io->og.nt_hash = talloc_memdup(io->ac,
+ ac->change->old_nt_pwd_hash,
+ sizeof(struct samr_Password));
+ }
+ io->og.lm_hash = NULL;
+ if (lpcfg_lanman_auth(lp_ctx) && (ac->change->old_lm_pwd_hash != NULL)) {
+ io->og.lm_hash = talloc_memdup(io->ac,
+ ac->change->old_lm_pwd_hash,
+ sizeof(struct samr_Password));
+ }
+ }
+
/* refuse the change if someone wants to change the clear-
text and supply his own hashes at the same time... */
if ((io->n.cleartext_utf8 || io->n.cleartext_utf16)
/* refuse the change if someone tries to set/change the password by
* the lanman hash alone and we've deactivated that mechanism. This
* would end in an account without any password! */
- if ((!io->n.cleartext_utf8) && (!io->n.cleartext_utf16)
+ if (io->ac->update_password
+ && (!io->n.cleartext_utf8) && (!io->n.cleartext_utf16)
&& (!io->n.nt_hash) && (!io->n.lm_hash)) {
ldb_asprintf_errstring(ldb,
"setup_io: "
- "The password change/set operations performed using the LAN Manager hash alone are deactivated!");
+ "It's not possible to delete the password (changes using the LAN Manager hash alone could be deactivated)!");
+ /* on "userPassword" and "clearTextPassword" we've to return
+ * something different, since these are virtual attributes */
+ if ((ldb_msg_find_element(client_msg, "userPassword") != NULL) ||
+ (ldb_msg_find_element(client_msg, "clearTextPassword") != NULL)) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
return LDB_ERR_UNWILLING_TO_PERFORM;
}
return LDB_ERR_UNWILLING_TO_PERFORM;
}
- /* refuse the change if someone wants to compare against both
- * hashes at the same time for a "password modify" operation... */
- if (io->og.nt_hash && io->og.lm_hash) {
- ldb_asprintf_errstring(ldb,
- "setup_io: "
- "it's only allowed to provide the old password in hash format as 'unicodePwd' or as 'dBCSPwd'");
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
-
/* Decides if we have a password modify or password reset operation */
if (ac->req->operation == LDB_ADD) {
/* On "add" we have only "password reset" */
ac->pwd_reset = true;
} else if (ac->req->operation == LDB_MODIFY) {
if (io->og.cleartext_utf8 || io->og.cleartext_utf16
- || io->og.nt_hash || io->og.lm_hash
- || ac->change_old_pw_checked) {
- /* If we have an old password or the "change old
- * password checked" control specified then for sure it
+ || io->og.nt_hash || io->og.lm_hash) {
+ /* If we have an old password specified then for sure it
* is a user "password change" */
ac->pwd_reset = false;
} else {
return ldb_operr(ldb);
}
+ if (io->u.is_krbtgt) {
+ size_t min = 196;
+ size_t max = 255;
+ size_t diff = max - min;
+ size_t len = max;
+ struct ldb_val *krbtgt_utf16 = NULL;
+
+ if (!ac->pwd_reset) {
+ return dsdb_module_werror(ac->module,
+ LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS,
+ WERR_DS_ATT_ALREADY_EXISTS,
+ "Password change on krbtgt not permitted!");
+ }
+
+ if (io->n.cleartext_utf16 == NULL) {
+ return dsdb_module_werror(ac->module,
+ LDB_ERR_UNWILLING_TO_PERFORM,
+ WERR_DS_INVALID_ATTRIBUTE_SYNTAX,
+ "Password reset on krbtgt requires UTF16!");
+ }
+
+ /*
+ * Instead of taking the callers value,
+ * we just generate a new random value here.
+ *
+ * Include null termination in the array.
+ */
+ if (diff > 0) {
+ size_t tmp;
+
+ generate_random_buffer((uint8_t *)&tmp, sizeof(tmp));
+
+ tmp %= diff;
+
+ len = min + tmp;
+ }
+
+ krbtgt_utf16 = talloc_zero(io->ac, struct ldb_val);
+ if (krbtgt_utf16 == NULL) {
+ return ldb_oom(ldb);
+ }
+
+ *krbtgt_utf16 = data_blob_talloc_zero(krbtgt_utf16,
+ (len+1)*2);
+ if (krbtgt_utf16->data == NULL) {
+ return ldb_oom(ldb);
+ }
+ krbtgt_utf16->length = len * 2;
+ generate_secret_buffer(krbtgt_utf16->data,
+ krbtgt_utf16->length);
+ io->n.cleartext_utf16 = krbtgt_utf16;
+ }
+
+ if (existing_msg != NULL) {
+ NTSTATUS status;
+
+ if (ac->pwd_reset) {
+ /* Get the old password from the database */
+ status = samdb_result_passwords_no_lockout(ac,
+ lp_ctx,
+ existing_msg,
+ &io->o.lm_hash,
+ &io->o.nt_hash);
+ } else {
+ /* Get the old password from the database */
+ status = samdb_result_passwords(ac,
+ lp_ctx,
+ existing_msg,
+ &io->o.lm_hash,
+ &io->o.nt_hash);
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_ACCOUNT_LOCKED_OUT)) {
+ return dsdb_module_werror(ac->module,
+ LDB_ERR_CONSTRAINT_VIOLATION,
+ WERR_ACCOUNT_LOCKED_OUT,
+ "Password change not permitted,"
+ " account locked out!");
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ /*
+ * This only happens if the database has gone weird,
+ * not if we are just missing the passwords
+ */
+ return ldb_operr(ldb);
+ }
+
+ io->o.nt_history_len = samdb_result_hashes(ac, existing_msg,
+ "ntPwdHistory",
+ &io->o.nt_history);
+ io->o.lm_history_len = samdb_result_hashes(ac, existing_msg,
+ "lmPwdHistory",
+ &io->o.lm_history);
+ io->o.supplemental = ldb_msg_find_ldb_val(existing_msg,
+ "supplementalCredentials");
+
+ if (io->o.supplemental != NULL) {
+ enum ndr_err_code ndr_err;
+
+ ndr_err = ndr_pull_struct_blob_all(io->o.supplemental, io->ac,
+ &io->o.scb,
+ (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(ldb,
+ "setup_io: failed to pull "
+ "old supplementalCredentialsBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+ }
+
return LDB_SUCCESS;
}
static struct ph_context *ph_init_context(struct ldb_module *module,
- struct ldb_request *req)
+ struct ldb_request *req,
+ bool userPassword,
+ bool update_password)
{
struct ldb_context *ldb;
struct ph_context *ac;
+ struct loadparm_context *lp_ctx = NULL;
ldb = ldb_module_get_ctx(module);
ac->module = module;
ac->req = req;
+ ac->userPassword = userPassword;
+ ac->update_password = update_password;
+ ac->update_lastset = true;
+
+ lp_ctx = talloc_get_type_abort(ldb_get_opaque(ldb, "loadparm"),
+ struct loadparm_context);
+ ac->gpg_key_ids = lpcfg_password_hash_gpg_key_ids(lp_ctx);
return ac;
}
ctrl->critical = false;
}
- ac->change_old_pw_checked = false;
ctrl = ldb_request_get_control(ac->req,
- DSDB_CONTROL_PASSWORD_CHANGE_OLD_PW_CHECKED_OID);
+ DSDB_CONTROL_PASSWORD_CHANGE_OID);
+ if (ctrl != NULL) {
+ ac->change = (struct dsdb_control_password_change *) ctrl->data;
+
+ /* Mark the "change" control as uncritical (done) */
+ ctrl->critical = false;
+ }
+
+ ac->pwd_last_set_bypass = false;
+ ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_BYPASS_LAST_SET_OID);
+ if (ctrl != NULL) {
+ ac->pwd_last_set_bypass = true;
+
+ /* Mark the "bypass pwdLastSet" control as uncritical (done) */
+ ctrl->critical = false;
+ }
+
+ ac->pwd_last_set_default = false;
+ ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_DEFAULT_LAST_SET_OID);
+ if (ctrl != NULL) {
+ ac->pwd_last_set_default = true;
+
+ /* Mark the "bypass pwdLastSet" control as uncritical (done) */
+ ctrl->critical = false;
+ }
+
+ ac->smartcard_reset = false;
+ ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_USER_ACCOUNT_CONTROL_OID);
if (ctrl != NULL) {
- ac->change_old_pw_checked = true;
+ struct dsdb_control_password_user_account_control *uac = NULL;
+ uint32_t added_flags = 0;
+
+ uac = talloc_get_type_abort(ctrl->data,
+ struct dsdb_control_password_user_account_control);
+
+ added_flags = uac->new_flags & ~uac->old_flags;
+
+ if (added_flags & UF_SMARTCARD_REQUIRED) {
+ ac->smartcard_reset = true;
+ }
- /* Mark the "change old password checked" control as uncritical
- * (done) */
+ /* Mark the "smartcard required" control as uncritical (done) */
ctrl->critical = false;
}
}
struct ldb_context *ldb;
struct ph_context *ac;
struct loadparm_context *lp_ctx;
- int ret;
+ int ret = LDB_SUCCESS;
ac = talloc_get_type(req->context, struct ph_context);
ldb = ldb_module_get_ctx(ac->module);
}
/* Setup the "domain data" structure */
- ac->status->domain_data.pwdProperties = samdb_result_uint(ares->message, "pwdProperties", -1);
- ac->status->domain_data.pwdHistoryLength = samdb_result_uint(ares->message, "pwdHistoryLength", -1);
- ac->status->domain_data.maxPwdAge = samdb_result_int64(ares->message, "maxPwdAge", -1);
- ac->status->domain_data.minPwdAge = samdb_result_int64(ares->message, "minPwdAge", -1);
- ac->status->domain_data.minPwdLength = samdb_result_uint(ares->message, "minPwdLength", -1);
+ ac->status->domain_data.pwdProperties =
+ ldb_msg_find_attr_as_uint(ares->message, "pwdProperties", -1);
+ ac->status->domain_data.pwdHistoryLength =
+ ldb_msg_find_attr_as_uint(ares->message, "pwdHistoryLength", -1);
+ ac->status->domain_data.maxPwdAge =
+ ldb_msg_find_attr_as_int64(ares->message, "maxPwdAge", -1);
+ ac->status->domain_data.minPwdAge =
+ ldb_msg_find_attr_as_int64(ares->message, "minPwdAge", -1);
+ ac->status->domain_data.minPwdLength =
+ ldb_msg_find_attr_as_uint(ares->message, "minPwdLength", -1);
ac->status->domain_data.store_cleartext =
ac->status->domain_data.pwdProperties & DOMAIN_PASSWORD_STORE_CLEARTEXT;
- talloc_free(ares);
-
/* For a domain DN, this puts things in dotted notation */
/* For builtin domains, this will give details for the host,
* but that doesn't really matter, as it's just used for salt
ac->status->reject_reason = SAM_PWD_CHANGE_NO_ERROR;
+ if (ac->dom_res != NULL) {
+ talloc_free(ares);
+
+ ldb_set_errstring(ldb, "Too many results");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ac->dom_res = talloc_steal(ac, ares);
ret = LDB_SUCCESS;
break;
"maxPwdAge",
"minPwdAge",
"minPwdLength",
+ "lockoutThreshold",
+ "lockOutObservationWindow",
NULL };
+ int ret;
ldb = ldb_module_get_ctx(ac->module);
- return ldb_build_search_req(&ac->dom_req, ldb, ac,
- ldb_get_default_basedn(ldb),
- LDB_SCOPE_BASE,
- NULL, attrs,
- NULL,
- ac, get_domain_data_callback,
- ac->req);
+ ret = ldb_build_search_req(&ac->dom_req, ldb, ac,
+ ldb_get_default_basedn(ldb),
+ LDB_SCOPE_BASE,
+ NULL, attrs,
+ NULL,
+ ac, get_domain_data_callback,
+ ac->req);
+ LDB_REQ_SET_LOCATION(ac->dom_req);
+ return ret;
}
-static int password_hash_add(struct ldb_module *module, struct ldb_request *req)
+static int password_hash_needed(struct ldb_module *module,
+ struct ldb_request *req,
+ struct ph_context **_ac)
{
- struct ldb_context *ldb;
- struct ph_context *ac;
- struct ldb_message_element *userPasswordAttr, *clearTextPasswordAttr,
- *ntAttr, *lmAttr;
- int ret;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ const char *operation = NULL;
+ const struct ldb_message *msg = NULL;
+ struct ph_context *ac = NULL;
+ const char *passwordAttrs[] = {
+ "userPassword",
+ "clearTextPassword",
+ "unicodePwd",
+ "dBCSPwd",
+ NULL
+ };
+ const char **a = NULL;
+ unsigned int attr_cnt = 0;
struct ldb_control *bypass = NULL;
+ struct ldb_control *uac_ctrl = NULL;
+ bool userPassword = dsdb_user_password_support(module, req, req);
+ bool update_password = false;
+ bool processing_needed = false;
- ldb = ldb_module_get_ctx(module);
+ *_ac = NULL;
- ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_add\n");
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_needed\n");
- if (ldb_dn_is_special(req->op.add.message->dn)) { /* do not manipulate our control entries */
+ switch (req->operation) {
+ case LDB_ADD:
+ operation = "add";
+ msg = req->op.add.message;
+ break;
+ case LDB_MODIFY:
+ operation = "modify";
+ msg = req->op.mod.message;
+ break;
+ default:
return ldb_next_request(module, req);
}
- /* If the caller is manipulating the local passwords directly, let them pass */
- if (ldb_dn_compare_base(ldb_dn_new(req, ldb, LOCAL_BASE),
- req->op.add.message->dn) == 0) {
+ if (ldb_dn_is_special(msg->dn)) { /* do not manipulate our control entries */
return ldb_next_request(module, req);
}
if (bypass != NULL) {
/* Mark the "bypass" control as uncritical (done) */
bypass->critical = false;
- ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_add (bypassing)\n");
- return ldb_next_request(module, req);
+ ldb_debug(ldb, LDB_DEBUG_TRACE,
+ "password_hash_needed(%s) (bypassing)\n",
+ operation);
+ return password_hash_bypass(module, req);
}
/* nobody must touch password histories and 'supplementalCredentials' */
- if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
+ if (ldb_msg_find_element(msg, "ntPwdHistory")) {
return LDB_ERR_UNWILLING_TO_PERFORM;
}
- if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
+ if (ldb_msg_find_element(msg, "lmPwdHistory")) {
return LDB_ERR_UNWILLING_TO_PERFORM;
}
- if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
+ if (ldb_msg_find_element(msg, "supplementalCredentials")) {
return LDB_ERR_UNWILLING_TO_PERFORM;
}
- /* If no part of this touches the 'userPassword' OR 'clearTextPassword'
- * OR 'unicodePwd' OR 'dBCSPwd' we don't need to make any changes. */
+ /*
+ * If no part of this touches the 'userPassword' OR 'clearTextPassword'
+ * OR 'unicodePwd' OR 'dBCSPwd' we don't need to make any changes.
+ * For password changes/set there should be a 'delete' or a 'modify'
+ * on these attributes.
+ */
+ for (a = passwordAttrs; *a != NULL; a++) {
+ if ((!userPassword) && (ldb_attr_cmp(*a, "userPassword") == 0)) {
+ continue;
+ }
+
+ if (ldb_msg_find_element(msg, *a) != NULL) {
+ /* MS-ADTS 3.1.1.3.1.5.2 */
+ if ((ldb_attr_cmp(*a, "userPassword") == 0) &&
+ (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003)) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ ++attr_cnt;
+ }
+ }
+
+ if (attr_cnt > 0) {
+ update_password = true;
+ processing_needed = true;
+ }
+
+ if (ldb_msg_find_element(msg, "pwdLastSet")) {
+ processing_needed = true;
+ }
+
+ uac_ctrl = ldb_request_get_control(req,
+ DSDB_CONTROL_PASSWORD_USER_ACCOUNT_CONTROL_OID);
+ if (uac_ctrl != NULL) {
+ struct dsdb_control_password_user_account_control *uac = NULL;
+ uint32_t added_flags = 0;
+
+ uac = talloc_get_type_abort(uac_ctrl->data,
+ struct dsdb_control_password_user_account_control);
+
+ added_flags = uac->new_flags & ~uac->old_flags;
- userPasswordAttr = ldb_msg_find_element(req->op.add.message, "userPassword");
- clearTextPasswordAttr = ldb_msg_find_element(req->op.add.message, "clearTextPassword");
- ntAttr = ldb_msg_find_element(req->op.add.message, "unicodePwd");
- lmAttr = ldb_msg_find_element(req->op.add.message, "dBCSPwd");
+ if (added_flags & UF_SMARTCARD_REQUIRED) {
+ processing_needed = true;
+ }
+ }
- if ((!userPasswordAttr) && (!clearTextPasswordAttr) && (!ntAttr) && (!lmAttr)) {
+ if (!processing_needed) {
return ldb_next_request(module, req);
}
+ ac = ph_init_context(module, req, userPassword, update_password);
+ if (!ac) {
+ DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
+ return ldb_operr(ldb);
+ }
+ ph_apply_controls(ac);
+
+ /*
+ * Make a copy in order to apply our modifications
+ * to the final update
+ */
+ ac->update_msg = ldb_msg_copy_shallow(ac, msg);
+ if (ac->update_msg == NULL) {
+ return ldb_oom(ldb);
+ }
+
+ /*
+ * Remove all password related attributes.
+ */
+ if (ac->userPassword) {
+ ldb_msg_remove_attr(ac->update_msg, "userPassword");
+ }
+ ldb_msg_remove_attr(ac->update_msg, "clearTextPassword");
+ ldb_msg_remove_attr(ac->update_msg, "unicodePwd");
+ ldb_msg_remove_attr(ac->update_msg, "ntPwdHistory");
+ ldb_msg_remove_attr(ac->update_msg, "dBCSPwd");
+ ldb_msg_remove_attr(ac->update_msg, "lmPwdHistory");
+ ldb_msg_remove_attr(ac->update_msg, "supplementalCredentials");
+ ldb_msg_remove_attr(ac->update_msg, "pwdLastSet");
+
+ *_ac = ac;
+ return LDB_SUCCESS;
+}
+
+static int password_hash_add(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ struct ph_context *ac = NULL;
+ int ret;
+
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_add\n");
+
+ ret = password_hash_needed(module, req, &ac);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ if (ac == NULL) {
+ return ret;
+ }
+
/* Make sure we are performing the password set action on a (for us)
* valid object. Those are instances of either "user" and/or
* "inetOrgPerson". Otherwise continue with the submodules. */
if ((!ldb_msg_check_string_attribute(req->op.add.message, "objectClass", "user"))
&& (!ldb_msg_check_string_attribute(req->op.add.message, "objectClass", "inetOrgPerson"))) {
+ TALLOC_FREE(ac);
+
if (ldb_msg_find_element(req->op.add.message, "clearTextPassword") != NULL) {
ldb_set_errstring(ldb,
"'clearTextPassword' is only allowed on objects of class 'user' and/or 'inetOrgPerson'!");
return ldb_next_request(module, req);
}
- ac = ph_init_context(module, req);
- if (ac == NULL) {
- DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
- return ldb_operr(ldb);
- }
- ph_apply_controls(ac);
-
/* get user domain data */
ret = build_domain_data_request(ac);
if (ret != LDB_SUCCESS) {
static int password_hash_add_do_add(struct ph_context *ac)
{
- struct ldb_context *ldb;
+ struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
struct ldb_request *down_req;
- struct ldb_message *msg;
struct setup_password_fields_io io;
int ret;
/* Prepare the internal data structure containing the passwords */
- ret = setup_io(ac, ac->req->op.add.message, ac->req->op.add.message, &io);
+ ret = setup_io(ac, ac->req->op.add.message, NULL, &io);
if (ret != LDB_SUCCESS) {
return ret;
}
- ldb = ldb_module_get_ctx(ac->module);
-
- msg = ldb_msg_copy_shallow(ac, ac->req->op.add.message);
- if (msg == NULL) {
- return ldb_operr(ldb);
- }
-
- /* remove attributes that we just read into 'io' */
- ldb_msg_remove_attr(msg, "userPassword");
- ldb_msg_remove_attr(msg, "clearTextPassword");
- ldb_msg_remove_attr(msg, "unicodePwd");
- ldb_msg_remove_attr(msg, "dBCSPwd");
- ldb_msg_remove_attr(msg, "pwdLastSet");
-
ret = setup_password_fields(&io);
if (ret != LDB_SUCCESS) {
return ret;
return ret;
}
- if (io.g.nt_hash) {
- ret = samdb_msg_add_hash(ldb, ac, msg,
- "unicodePwd", io.g.nt_hash);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.lm_hash) {
- ret = samdb_msg_add_hash(ldb, ac, msg,
- "dBCSPwd", io.g.lm_hash);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.nt_history_len > 0) {
- ret = samdb_msg_add_hashes(ldb, ac, msg,
- "ntPwdHistory",
- io.g.nt_history,
- io.g.nt_history_len);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.lm_history_len > 0) {
- ret = samdb_msg_add_hashes(ldb, ac, msg,
- "lmPwdHistory",
- io.g.lm_history,
- io.g.lm_history_len);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.supplemental.length > 0) {
- ret = ldb_msg_add_value(msg, "supplementalCredentials",
- &io.g.supplemental, NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ ret = setup_smartcard_reset(&io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- ret = samdb_msg_add_uint64(ldb, ac, msg,
- "pwdLastSet",
- io.g.last_set);
+
+ ret = update_final_msg(&io);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_build_add_req(&down_req, ldb, ac,
- msg,
+ ac->update_msg,
ac->req->controls,
ac, ph_op_callback,
ac->req);
+ LDB_REQ_SET_LOCATION(down_req);
if (ret != LDB_SUCCESS) {
return ret;
}
static int password_hash_modify(struct ldb_module *module, struct ldb_request *req)
{
- struct ldb_context *ldb;
- struct ph_context *ac;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ struct ph_context *ac = NULL;
const char *passwordAttrs[] = { "userPassword", "clearTextPassword",
"unicodePwd", "dBCSPwd", NULL }, **l;
- unsigned int attr_cnt, del_attr_cnt, add_attr_cnt, rep_attr_cnt;
+ unsigned int del_attr_cnt, add_attr_cnt, rep_attr_cnt;
struct ldb_message_element *passwordAttr;
struct ldb_message *msg;
struct ldb_request *down_req;
+ struct ldb_control *restore = NULL;
int ret;
- struct ldb_control *bypass = NULL;
-
- ldb = ldb_module_get_ctx(module);
+ unsigned int i = 0;
ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_modify\n");
- if (ldb_dn_is_special(req->op.mod.message->dn)) { /* do not manipulate our control entries */
- return ldb_next_request(module, req);
- }
-
- /* If the caller is manipulating the local passwords directly, let them pass */
- if (ldb_dn_compare_base(ldb_dn_new(req, ldb, LOCAL_BASE),
- req->op.mod.message->dn) == 0) {
- return ldb_next_request(module, req);
- }
-
- bypass = ldb_request_get_control(req,
- DSDB_CONTROL_BYPASS_PASSWORD_HASH_OID);
- if (bypass != NULL) {
- /* Mark the "bypass" control as uncritical (done) */
- bypass->critical = false;
- ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_modify (bypassing)\n");
- return ldb_next_request(module, req);
- }
-
- /* nobody must touch password histories and 'supplementalCredentials' */
- if (ldb_msg_find_element(req->op.mod.message, "ntPwdHistory")) {
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
- if (ldb_msg_find_element(req->op.mod.message, "lmPwdHistory")) {
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
- if (ldb_msg_find_element(req->op.mod.message, "supplementalCredentials")) {
- return LDB_ERR_UNWILLING_TO_PERFORM;
- }
-
- /* If no part of this touches the 'userPassword' OR 'clearTextPassword'
- * OR 'unicodePwd' OR 'dBCSPwd' we don't need to make any changes.
- * For password changes/set there should be a 'delete' or a 'modify'
- * on these attributes. */
- attr_cnt = 0;
- for (l = passwordAttrs; *l != NULL; l++) {
- if (ldb_msg_find_element(req->op.mod.message, *l) != NULL) {
- ++attr_cnt;
- }
- }
- if (attr_cnt == 0) {
- return ldb_next_request(module, req);
+ ret = password_hash_needed(module, req, &ac);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
-
- ac = ph_init_context(module, req);
- if (!ac) {
- DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
- return ldb_operr(ldb);
+ if (ac == NULL) {
+ return ret;
}
- ph_apply_controls(ac);
/* use a new message structure so that we can modify it */
msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
add_attr_cnt = 0;
rep_attr_cnt = 0;
for (l = passwordAttrs; *l != NULL; l++) {
+ if ((!ac->userPassword) &&
+ (ldb_attr_cmp(*l, "userPassword") == 0)) {
+ continue;
+ }
+
while ((passwordAttr = ldb_msg_find_element(msg, *l)) != NULL) {
- if (passwordAttr->flags == LDB_FLAG_MOD_DELETE) {
+ if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_DELETE) {
++del_attr_cnt;
}
- if (passwordAttr->flags == LDB_FLAG_MOD_ADD) {
+ if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_ADD) {
++add_attr_cnt;
}
- if (passwordAttr->flags == LDB_FLAG_MOD_REPLACE) {
+ if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_REPLACE) {
++rep_attr_cnt;
}
if ((passwordAttr->num_values != 1) &&
- (passwordAttr->flags != LDB_FLAG_MOD_REPLACE)) {
+ (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_ADD)) {
+ talloc_free(ac);
+ ldb_asprintf_errstring(ldb,
+ "'%s' attribute must have exactly one value on add operations!",
+ *l);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if ((passwordAttr->num_values > 1) &&
+ (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_DELETE)) {
talloc_free(ac);
ldb_asprintf_errstring(ldb,
- "'%s' attributes must have exactly one value!",
+ "'%s' attribute must have zero or one value(s) on delete operations!",
*l);
return LDB_ERR_CONSTRAINT_VIOLATION;
}
ldb_msg_remove_element(msg, passwordAttr);
}
}
- if ((del_attr_cnt > 0) && (add_attr_cnt == 0)) {
- talloc_free(ac);
- ldb_set_errstring(ldb,
- "Only the delete action for a password change specified!");
- return LDB_ERR_CONSTRAINT_VIOLATION;
- }
if ((del_attr_cnt == 0) && (add_attr_cnt > 0)) {
talloc_free(ac);
ldb_set_errstring(ldb,
return LDB_ERR_UNWILLING_TO_PERFORM;
}
+ restore = ldb_request_get_control(req,
+ DSDB_CONTROL_RESTORE_TOMBSTONE_OID);
+ if (restore == NULL) {
+ /*
+ * A tomstone reanimation generates a double update
+ * of pwdLastSet.
+ *
+ * So we only remove it without the
+ * DSDB_CONTROL_RESTORE_TOMBSTONE_OID control.
+ */
+ ldb_msg_remove_attr(msg, "pwdLastSet");
+ }
+
+
/* if there was nothing else to be modified skip to next step */
if (msg->num_elements == 0) {
return password_hash_mod_search_self(ac);
}
+ /*
+ * Now we apply all changes remaining in msg
+ * and remove them from our final update_msg
+ */
+
+ for (i = 0; i < msg->num_elements; i++) {
+ ldb_msg_remove_attr(ac->update_msg,
+ msg->elements[i].name);
+ }
+
ret = ldb_build_mod_req(&down_req, ldb, ac,
msg,
req->controls,
ac, ph_modify_callback,
req);
+ LDB_REQ_SET_LOCATION(down_req);
if (ret != LDB_SUCCESS) {
return ret;
}
{
struct ldb_context *ldb;
struct ph_context *ac;
- int ret;
+ int ret = LDB_SUCCESS;
ac = talloc_get_type(req->context, struct ph_context);
ldb = ldb_module_get_ctx(ac->module);
struct ldb_context *ldb;
static const char * const attrs[] = { "objectClass",
"userAccountControl",
+ "msDS-User-Account-Control-Computed",
"pwdLastSet",
"sAMAccountName",
"objectSid",
"ntPwdHistory",
"dBCSPwd",
"unicodePwd",
+ "badPasswordTime",
+ "badPwdCount",
+ "lockoutTime",
+ "msDS-SecondaryKrbTgtNumber",
NULL };
struct ldb_request *search_req;
int ret;
NULL,
ac, ph_mod_search_callback,
ac->req);
-
+ LDB_REQ_SET_LOCATION(search_req);
if (ret != LDB_SUCCESS) {
return ret;
}
static int password_hash_mod_do_mod(struct ph_context *ac)
{
struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
- struct loadparm_context *lp_ctx =
- lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
- struct loadparm_context);
struct ldb_request *mod_req;
- struct ldb_message *msg;
- const struct ldb_message *orig_msg, *searched_msg;
struct setup_password_fields_io io;
int ret;
- NTSTATUS status;
-
- /* use a new message structure so that we can modify it */
- msg = ldb_msg_new(ac);
- if (msg == NULL) {
- return ldb_operr(ldb);
- }
-
- /* modify dn */
- msg->dn = ac->req->op.mod.message->dn;
-
- orig_msg = ac->req->op.mod.message;
- searched_msg = ac->search_res->message;
/* Prepare the internal data structure containing the passwords */
- ret = setup_io(ac, orig_msg, searched_msg, &io);
+ ret = setup_io(ac, ac->req->op.mod.message,
+ ac->search_res->message, &io);
if (ret != LDB_SUCCESS) {
return ret;
}
-
- /* Get the old password from the database */
- status = samdb_result_passwords(io.ac,
- lp_ctx,
- discard_const_p(struct ldb_message, searched_msg),
- &io.o.lm_hash, &io.o.nt_hash);
- if (!NT_STATUS_IS_OK(status)) {
- return ldb_operr(ldb);
- }
-
- io.o.nt_history_len = samdb_result_hashes(io.ac, searched_msg, "ntPwdHistory", &io.o.nt_history);
- io.o.lm_history_len = samdb_result_hashes(io.ac, searched_msg, "lmPwdHistory", &io.o.lm_history);
- io.o.supplemental = ldb_msg_find_ldb_val(searched_msg, "supplementalCredentials");
ret = setup_password_fields(&io);
if (ret != LDB_SUCCESS) {
return ret;
}
- /* make sure we replace all the old attributes */
- ret = ldb_msg_add_empty(msg, "unicodePwd", LDB_FLAG_MOD_REPLACE, NULL);
- ret = ldb_msg_add_empty(msg, "dBCSPwd", LDB_FLAG_MOD_REPLACE, NULL);
- ret = ldb_msg_add_empty(msg, "ntPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
- ret = ldb_msg_add_empty(msg, "lmPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
- ret = ldb_msg_add_empty(msg, "supplementalCredentials", LDB_FLAG_MOD_REPLACE, NULL);
- ret = ldb_msg_add_empty(msg, "pwdLastSet", LDB_FLAG_MOD_REPLACE, NULL);
-
- if (io.g.nt_hash) {
- ret = samdb_msg_add_hash(ldb, ac, msg,
- "unicodePwd", io.g.nt_hash);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.lm_hash) {
- ret = samdb_msg_add_hash(ldb, ac, msg,
- "dBCSPwd", io.g.lm_hash);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.nt_history_len > 0) {
- ret = samdb_msg_add_hashes(ldb, ac, msg,
- "ntPwdHistory",
- io.g.nt_history,
- io.g.nt_history_len);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.lm_history_len > 0) {
- ret = samdb_msg_add_hashes(ldb, ac, msg,
- "lmPwdHistory",
- io.g.lm_history,
- io.g.lm_history_len);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
- if (io.g.supplemental.length > 0) {
- ret = ldb_msg_add_value(msg, "supplementalCredentials",
- &io.g.supplemental, NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ ret = setup_smartcard_reset(&io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- ret = samdb_msg_add_uint64(ldb, ac, msg,
- "pwdLastSet",
- io.g.last_set);
+
+ ret = update_final_msg(&io);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_build_mod_req(&mod_req, ldb, ac,
- msg,
+ ac->update_msg,
ac->req->controls,
ac, ph_op_callback,
ac->req);
+ LDB_REQ_SET_LOCATION(mod_req);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(ac->module, mod_req);
}
-_PUBLIC_ const struct ldb_module_ops ldb_password_hash_module_ops = {
+static const struct ldb_module_ops ldb_password_hash_module_ops = {
.name = "password_hash",
.add = password_hash_add,
.modify = password_hash_modify
};
+
+int ldb_password_hash_module_init(const char *version)
+{
+#ifdef ENABLE_GPGME
+ const char *gversion = NULL;
+#endif /* ENABLE_GPGME */
+
+ LDB_MODULE_CHECK_VERSION(version);
+
+#ifdef ENABLE_GPGME
+ /*
+ * Note: this sets a SIGPIPE handler
+ * if none is active already. See:
+ * https://www.gnupg.org/documentation/manuals/gpgme/Signal-Handling.html#Signal-Handling
+ */
+ gversion = gpgme_check_version(GPGME_VERSION);
+ if (gversion == NULL) {
+ fprintf(stderr, "%s() in %s version[%s]: "
+ "gpgme_check_version(%s) not available, "
+ "gpgme_check_version(NULL) => '%s'\n",
+ __func__, __FILE__, version,
+ GPGME_VERSION, gpgme_check_version(NULL));
+ return LDB_ERR_UNAVAILABLE;
+ }
+#endif /* ENABLE_GPGME */
+
+ return ldb_register_module(&ldb_password_hash_module_ops);
+}
git.samba.org / samba.git / blobdiff