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-rw-r--r--source4/dsdb/samdb/ldb_modules/password_hash.c2281
1 files changed, 2281 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/password_hash.c b/source4/dsdb/samdb/ldb_modules/password_hash.c
new file mode 100644
index 0000000000..69783aefa8
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/password_hash.c
@@ -0,0 +1,2281 @@
+/*
+ ldb database module
+
+ Copyright (C) Simo Sorce 2004-2006
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2006
+ Copyright (C) Andrew Tridgell 2004
+ Copyright (C) Stefan Metzmacher 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/>.
+*/
+
+/*
+ * Name: ldb
+ *
+ * Component: ldb password_hash module
+ *
+ * Description: correctly update hash values based on changes to userPassword and friends
+ *
+ * Author: Andrew Bartlett
+ * Author: Stefan Metzmacher
+ */
+
+#include "includes.h"
+#include "libcli/ldap/ldap_ndr.h"
+#include "ldb/include/ldb_errors.h"
+#include "ldb/include/ldb.h"
+#include "ldb/include/ldb_private.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 "system/kerberos.h"
+#include "auth/kerberos/kerberos.h"
+#include "system/time.h"
+#include "dsdb/samdb/samdb.h"
+#include "dsdb/common/flags.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"
+
+/* If we have decided there is reason to work on this request, then
+ * setup all the password hash types correctly.
+ *
+ * If the administrator doesn't want the userPassword stored (set in the
+ * domain and per-account policies) then we must strip that out before
+ * we do the first operation.
+ *
+ * Once this is done (which could update anything at all), we
+ * calculate the password hashes.
+ *
+ * This function must not only update the unicodePwd, dBCSPwd and
+ * supplementalCredentials fields, it must also atomicly increment the
+ * msDS-KeyVersionNumber. We should be in a transaction, so all this
+ * should be quite safe...
+ *
+ * Finally, if the administrator has requested that a password history
+ * be maintained, then this should also be written out.
+ *
+ */
+
+struct ph_context {
+
+ enum ph_type {PH_ADD, PH_MOD} type;
+ enum ph_step {PH_ADD_SEARCH_DOM, PH_ADD_DO_ADD, PH_MOD_DO_REQ, PH_MOD_SEARCH_SELF, PH_MOD_SEARCH_DOM, PH_MOD_DO_MOD} step;
+
+ struct ldb_module *module;
+ struct ldb_request *orig_req;
+
+ struct ldb_request *dom_req;
+ struct ldb_reply *dom_res;
+
+ struct ldb_request *down_req;
+
+ struct ldb_request *search_req;
+ struct ldb_reply *search_res;
+
+ struct ldb_request *mod_req;
+
+ struct dom_sid *domain_sid;
+};
+
+struct domain_data {
+ bool store_cleartext;
+ uint_t pwdProperties;
+ uint_t pwdHistoryLength;
+ char *netbios_domain;
+ char *dns_domain;
+ char *realm;
+};
+
+struct setup_password_fields_io {
+ struct ph_context *ac;
+ struct domain_data *domain;
+ struct smb_krb5_context *smb_krb5_context;
+
+ /* infos about the user account */
+ struct {
+ uint32_t user_account_control;
+ const char *sAMAccountName;
+ const char *user_principal_name;
+ bool is_computer;
+ } u;
+
+ /* new credentials */
+ struct {
+ const char *cleartext;
+ struct samr_Password *nt_hash;
+ struct samr_Password *lm_hash;
+ } n;
+
+ /* old credentials */
+ struct {
+ uint32_t nt_history_len;
+ struct samr_Password *nt_history;
+ uint32_t lm_history_len;
+ struct samr_Password *lm_history;
+ const struct ldb_val *supplemental;
+ struct supplementalCredentialsBlob scb;
+ uint32_t kvno;
+ } o;
+
+ /* generated credentials */
+ struct {
+ struct samr_Password *nt_hash;
+ struct samr_Password *lm_hash;
+ uint32_t nt_history_len;
+ struct samr_Password *nt_history;
+ uint32_t lm_history_len;
+ struct samr_Password *lm_history;
+ const char *salt;
+ DATA_BLOB aes_256;
+ DATA_BLOB aes_128;
+ DATA_BLOB des_md5;
+ DATA_BLOB des_crc;
+ struct ldb_val supplemental;
+ NTTIME last_set;
+ uint32_t kvno;
+ } g;
+};
+
+static int setup_nt_fields(struct setup_password_fields_io *io)
+{
+ uint32_t i;
+
+ io->g.nt_hash = io->n.nt_hash;
+
+ if (io->domain->pwdHistoryLength == 0) {
+ return LDB_SUCCESS;
+ }
+
+ /* We might not have an old NT password */
+ io->g.nt_history = talloc_array(io->ac,
+ struct samr_Password,
+ io->domain->pwdHistoryLength);
+ if (!io->g.nt_history) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.nt_history_len); i++) {
+ io->g.nt_history[i+1] = io->o.nt_history[i];
+ }
+ io->g.nt_history_len = i + 1;
+
+ if (io->g.nt_hash) {
+ io->g.nt_history[0] = *io->g.nt_hash;
+ } else {
+ /*
+ * TODO: is this correct?
+ * the simular behavior is correct for the lm history case
+ */
+ E_md4hash("", io->g.nt_history[0].hash);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int setup_lm_fields(struct setup_password_fields_io *io)
+{
+ uint32_t i;
+
+ io->g.lm_hash = io->n.lm_hash;
+
+ if (io->domain->pwdHistoryLength == 0) {
+ return LDB_SUCCESS;
+ }
+
+ /* We might not have an old NT password */
+ io->g.lm_history = talloc_array(io->ac,
+ struct samr_Password,
+ io->domain->pwdHistoryLength);
+ if (!io->g.lm_history) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.lm_history_len); i++) {
+ io->g.lm_history[i+1] = io->o.lm_history[i];
+ }
+ io->g.lm_history_len = i + 1;
+
+ if (io->g.lm_hash) {
+ io->g.lm_history[0] = *io->g.lm_hash;
+ } else {
+ E_deshash("", io->g.lm_history[0].hash);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int setup_kerberos_keys(struct setup_password_fields_io *io)
+{
+ krb5_error_code krb5_ret;
+ Principal *salt_principal;
+ krb5_salt salt;
+ krb5_keyblock key;
+
+ /* Many, many thanks to lukeh@padl.com for this
+ * algorithm, described in his Nov 10 2004 mail to
+ * samba-technical@samba.org */
+
+ /*
+ * Determine a salting principal
+ */
+ if (io->u.is_computer) {
+ char *name;
+ char *saltbody;
+
+ name = talloc_strdup(io->ac, io->u.sAMAccountName);
+ if (!name) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (name[strlen(name)-1] == '$') {
+ name[strlen(name)-1] = '\0';
+ }
+
+ saltbody = talloc_asprintf(io->ac, "%s.%s", name, io->domain->dns_domain);
+ if (!saltbody) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ &salt_principal,
+ io->domain->realm, "host",
+ saltbody, NULL);
+ } else if (io->u.user_principal_name) {
+ char *user_principal_name;
+ char *p;
+
+ user_principal_name = talloc_strdup(io->ac, io->u.user_principal_name);
+ if (!user_principal_name) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ p = strchr(user_principal_name, '@');
+ if (p) {
+ p[0] = '\0';
+ }
+
+ krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ &salt_principal,
+ io->domain->realm, user_principal_name,
+ NULL);
+ } else {
+ krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
+ &salt_principal,
+ io->domain->realm, io->u.sAMAccountName,
+ NULL);
+ }
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a salting principal failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /*
+ * create salt from salt_principal
+ */
+ krb5_ret = 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) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of krb5_salt failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ /* create a talloc copy */
+ io->g.salt = talloc_strndup(io->ac,
+ salt.saltvalue.data,
+ salt.saltvalue.length);
+ krb5_free_salt(io->smb_krb5_context->krb5_context, salt);
+ if (!io->g.salt) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ salt.saltvalue.data = discard_const(io->g.salt);
+ salt.saltvalue.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_salt(io->smb_krb5_context->krb5_context,
+ ENCTYPE_AES256_CTS_HMAC_SHA1_96,
+ io->n.cleartext,
+ salt,
+ &key);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a aes256-cts-hmac-sha1-96 key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ io->g.aes_256 = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
+ krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
+ if (!io->g.aes_256.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /*
+ * create ENCTYPE_AES128_CTS_HMAC_SHA1_96 key out of
+ * the salt and the cleartext password
+ */
+ krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
+ ENCTYPE_AES128_CTS_HMAC_SHA1_96,
+ io->n.cleartext,
+ salt,
+ &key);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a aes128-cts-hmac-sha1-96 key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ io->g.aes_128 = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
+ krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
+ if (!io->g.aes_128.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /*
+ * create ENCTYPE_DES_CBC_MD5 key out of
+ * the salt and the cleartext password
+ */
+ krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
+ ENCTYPE_DES_CBC_MD5,
+ io->n.cleartext,
+ salt,
+ &key);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a des-cbc-md5 key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ io->g.des_md5 = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
+ krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
+ if (!io->g.des_md5.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /*
+ * create ENCTYPE_DES_CBC_CRC key out of
+ * the salt and the cleartext password
+ */
+ krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
+ ENCTYPE_DES_CBC_CRC,
+ io->n.cleartext,
+ salt,
+ &key);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a des-cbc-crc key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ io->g.des_crc = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
+ krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
+ if (!io->g.des_crc.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int setup_primary_kerberos(struct setup_password_fields_io *io,
+ const struct supplementalCredentialsBlob *old_scb,
+ struct package_PrimaryKerberosBlob *pkb)
+{
+ struct package_PrimaryKerberosCtr3 *pkb3 = &pkb->ctr.ctr3;
+ struct supplementalCredentialsPackage *old_scp = NULL;
+ struct package_PrimaryKerberosBlob _old_pkb;
+ struct package_PrimaryKerberosCtr3 *old_pkb3 = NULL;
+ uint32_t i;
+ enum ndr_err_code ndr_err;
+
+ /*
+ * prepare generation of keys
+ *
+ * ENCTYPE_DES_CBC_MD5
+ * ENCTYPE_DES_CBC_CRC
+ */
+ pkb->version = 3;
+ pkb3->salt.string = io->g.salt;
+ pkb3->num_keys = 2;
+ pkb3->keys = talloc_array(io->ac,
+ struct package_PrimaryKerberosKey3,
+ pkb3->num_keys);
+ if (!pkb3->keys) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ pkb3->keys[0].keytype = ENCTYPE_DES_CBC_MD5;
+ pkb3->keys[0].value = &io->g.des_md5;
+ pkb3->keys[1].keytype = ENCTYPE_DES_CBC_CRC;
+ pkb3->keys[1].value = &io->g.des_crc;
+
+ /* initialize the old keys to zero */
+ pkb3->num_old_keys = 0;
+ pkb3->old_keys = NULL;
+
+ /* if there're no old keys, then we're done */
+ if (!old_scb) {
+ return LDB_SUCCESS;
+ }
+
+ for (i=0; i < old_scb->sub.num_packages; i++) {
+ if (strcmp("Primary:Kerberos", old_scb->sub.packages[i].name) != 0) {
+ continue;
+ }
+
+ if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
+ continue;
+ }
+
+ old_scp = &old_scb->sub.packages[i];
+ break;
+ }
+ /* Primary:Kerberos element of supplementalCredentials */
+ if (old_scp) {
+ DATA_BLOB blob;
+
+ blob = strhex_to_data_blob(old_scp->data);
+ if (!blob.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ talloc_steal(io->ac, blob.data);
+
+ /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
+ ndr_err = ndr_pull_struct_blob(&blob, io->ac, lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")), &_old_pkb,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_primary_kerberos: "
+ "failed to pull old package_PrimaryKerberosBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (_old_pkb.version != 3) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_primary_kerberos: "
+ "package_PrimaryKerberosBlob version[%u] expected[3]",
+ _old_pkb.version);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ old_pkb3 = &_old_pkb.ctr.ctr3;
+ }
+
+ /* if we didn't found the old keys we're done */
+ if (!old_pkb3) {
+ return LDB_SUCCESS;
+ }
+
+ /* fill in the old keys */
+ pkb3->num_old_keys = old_pkb3->num_keys;
+ pkb3->old_keys = old_pkb3->keys;
+
+ return LDB_SUCCESS;
+}
+
+static int setup_primary_kerberos_newer(struct setup_password_fields_io *io,
+ const struct supplementalCredentialsBlob *old_scb,
+ struct package_PrimaryKerberosBlob *pkb)
+{
+ struct package_PrimaryKerberosCtr4 *pkb4 = &pkb->ctr.ctr4;
+ struct supplementalCredentialsPackage *old_scp = NULL;
+ struct package_PrimaryKerberosBlob _old_pkb;
+ struct package_PrimaryKerberosCtr4 *old_pkb4 = NULL;
+ uint32_t i;
+ enum ndr_err_code ndr_err;
+
+ /*
+ * prepare generation of keys
+ *
+ * ENCTYPE_AES256_CTS_HMAC_SHA1_96
+ * ENCTYPE_AES128_CTS_HMAC_SHA1_96
+ * ENCTYPE_DES_CBC_MD5
+ * ENCTYPE_DES_CBC_CRC
+ */
+ pkb->version = 4;
+ pkb4->salt.string = io->g.salt;
+ pkb4->default_iteration_count = 4096;
+ pkb4->num_keys = 4;
+
+ pkb4->keys = talloc_array(io->ac,
+ struct package_PrimaryKerberosKey4,
+ pkb4->num_keys);
+ if (!pkb4->keys) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ pkb4->keys[0].iteration_count = 4096;
+ pkb4->keys[0].keytype = ENCTYPE_AES256_CTS_HMAC_SHA1_96;
+ pkb4->keys[0].value = &io->g.aes_256;
+ pkb4->keys[1].iteration_count = 4096;
+ pkb4->keys[1].keytype = ENCTYPE_AES128_CTS_HMAC_SHA1_96;
+ pkb4->keys[1].value = &io->g.aes_128;
+ pkb4->keys[2].iteration_count = 4096;
+ pkb4->keys[2].keytype = ENCTYPE_DES_CBC_MD5;
+ pkb4->keys[2].value = &io->g.des_md5;
+ pkb4->keys[3].iteration_count = 4096;
+ pkb4->keys[3].keytype = ENCTYPE_DES_CBC_CRC;
+ pkb4->keys[3].value = &io->g.des_crc;
+
+ /* initialize the old keys to zero */
+ pkb4->num_old_keys = 0;
+ pkb4->old_keys = NULL;
+ pkb4->num_older_keys = 0;
+ pkb4->older_keys = NULL;
+
+ /* if there're no old keys, then we're done */
+ if (!old_scb) {
+ return LDB_SUCCESS;
+ }
+
+ for (i=0; i < old_scb->sub.num_packages; i++) {
+ if (strcmp("Primary:Kerberos-Newer-Keys", old_scb->sub.packages[i].name) != 0) {
+ continue;
+ }
+
+ if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
+ continue;
+ }
+
+ old_scp = &old_scb->sub.packages[i];
+ break;
+ }
+ /* Primary:Kerberos-Newer-Keys element of supplementalCredentials */
+ if (old_scp) {
+ DATA_BLOB blob;
+
+ blob = strhex_to_data_blob(old_scp->data);
+ if (!blob.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ talloc_steal(io->ac, blob.data);
+
+ /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
+ ndr_err = ndr_pull_struct_blob(&blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &_old_pkb,
+ (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_primary_kerberos_newer: "
+ "failed to pull old package_PrimaryKerberosBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (_old_pkb.version != 4) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_primary_kerberos_newer: "
+ "package_PrimaryKerberosBlob version[%u] expected[4]",
+ _old_pkb.version);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ old_pkb4 = &_old_pkb.ctr.ctr4;
+ }
+
+ /* if we didn't found the old keys we're done */
+ if (!old_pkb4) {
+ return LDB_SUCCESS;
+ }
+
+ /* fill in the old keys */
+ pkb4->num_old_keys = old_pkb4->num_keys;
+ pkb4->old_keys = old_pkb4->keys;
+ pkb4->num_older_keys = old_pkb4->num_old_keys;
+ pkb4->older_keys = old_pkb4->old_keys;
+
+ return LDB_SUCCESS;
+}
+
+static int setup_primary_wdigest(struct setup_password_fields_io *io,
+ const struct supplementalCredentialsBlob *old_scb,
+ struct package_PrimaryWDigestBlob *pdb)
+{
+ DATA_BLOB sAMAccountName;
+ DATA_BLOB sAMAccountName_l;
+ DATA_BLOB sAMAccountName_u;
+ const char *user_principal_name = io->u.user_principal_name;
+ DATA_BLOB userPrincipalName;
+ DATA_BLOB userPrincipalName_l;
+ DATA_BLOB userPrincipalName_u;
+ DATA_BLOB netbios_domain;
+ DATA_BLOB netbios_domain_l;
+ DATA_BLOB netbios_domain_u;
+ DATA_BLOB dns_domain;
+ DATA_BLOB dns_domain_l;
+ DATA_BLOB dns_domain_u;
+ DATA_BLOB cleartext;
+ DATA_BLOB digest;
+ DATA_BLOB delim;
+ DATA_BLOB backslash;
+ uint8_t i;
+ struct {
+ DATA_BLOB *user;
+ DATA_BLOB *realm;
+ DATA_BLOB *nt4dom;
+ } wdigest[] = {
+ /*
+ * See
+ * http://technet2.microsoft.com/WindowsServer/en/library/717b450c-f4a0-4cc9-86f4-cc0633aae5f91033.mspx?mfr=true
+ * for what precalculated hashes are supposed to be stored...
+ *
+ * I can't reproduce all values which should contain "Digest" as realm,
+ * am I doing something wrong or is w2k3 just broken...?
+ *
+ * W2K3 fills in following for a user:
+ *
+ * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
+ * sAMAccountName: NewUser2Sam
+ * userPrincipalName: NewUser2Princ@sub1.w2k3.vmnet1.vm.base
+ *
+ * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
+ * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
+ * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
+ * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
+ * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
+ * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
+ * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
+ * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * 221c55284451ae9b3aacaa2a3c86f10f => NewUser2Princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
+ * 74e1be668853d4324d38c07e2acfb8ea => (w2k3 has a bug here!) newuser2princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
+ * e1e244ab7f098e3ae1761be7f9229bbb => NEWUSER2PRINC@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
+ * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
+ * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
+ * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
+ * 31dc704d3640335b2123d4ee28aa1f11 => ??? changes with NewUser2Sam => NewUser1Sam
+ * 36349f5cecd07320fb3bb0e119230c43 => ??? changes with NewUser2Sam => NewUser1Sam
+ * 12adf019d037fb535c01fd0608e78d9d => ??? changes with NewUser2Sam => NewUser1Sam
+ * 6feecf8e724906f3ee1105819c5105a1 => ??? changes with NewUser2Princ => NewUser1Princ
+ * 6c6911f3de6333422640221b9c51ff1f => ??? changes with NewUser2Princ => NewUser1Princ
+ * 4b279877e742895f9348ac67a8de2f69 => ??? changes with NewUser2Princ => NewUser1Princ
+ * db0c6bff069513e3ebb9870d29b57490 => ??? changes with NewUser2Sam => NewUser1Sam
+ * 45072621e56b1c113a4e04a8ff68cd0e => ??? changes with NewUser2Sam => NewUser1Sam
+ * 11d1220abc44a9c10cf91ef4a9c1de02 => ??? changes with NewUser2Sam => NewUser1Sam
+ *
+ * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
+ * sAMAccountName: NewUser2Sam
+ *
+ * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
+ * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
+ * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
+ * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
+ * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
+ * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
+ * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
+ * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
+ * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
+ * 8a140d30b6f0a5912735dc1e3bc993b4 => NewUser2Sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
+ * 86d95b2faae6cae4ec261e7fbaccf093 => (here w2k3 is correct) newuser2sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
+ * dfeff1493110220efcdfc6362e5f5450 => NEWUSER2SAM@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
+ * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
+ * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
+ * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
+ * 31dc704d3640335b2123d4ee28aa1f11 => ???M1 changes with NewUser2Sam => NewUser1Sam
+ * 36349f5cecd07320fb3bb0e119230c43 => ???M1.L changes with newuser2sam => newuser1sam
+ * 12adf019d037fb535c01fd0608e78d9d => ???M1.U changes with NEWUSER2SAM => NEWUSER1SAM
+ * 569b4533f2d9e580211dd040e5e360a8 => ???M2 changes with NewUser2Princ => NewUser1Princ
+ * 52528bddf310a587c5d7e6a9ae2cbb20 => ???M2.L changes with newuser2princ => newuser1princ
+ * 4f629a4f0361289ca4255ab0f658fcd5 => ???M3 changes with NewUser2Princ => NewUser1Princ (doesn't depend on case of userPrincipal )
+ * db0c6bff069513e3ebb9870d29b57490 => ???M4 changes with NewUser2Sam => NewUser1Sam
+ * 45072621e56b1c113a4e04a8ff68cd0e => ???M5 changes with NewUser2Sam => NewUser1Sam (doesn't depend on case of sAMAccountName)
+ * 11d1220abc44a9c10cf91ef4a9c1de02 => ???M4.U changes with NEWUSER2SAM => NEWUSER1SAM
+ */
+
+ /*
+ * sAMAccountName, netbios_domain
+ */
+ {
+ .user = &sAMAccountName,
+ .realm = &netbios_domain,
+ },
+ {
+ .user = &sAMAccountName_l,
+ .realm = &netbios_domain_l,
+ },
+ {
+ .user = &sAMAccountName_u,
+ .realm = &netbios_domain_u,
+ },
+ {
+ .user = &sAMAccountName,
+ .realm = &netbios_domain_u,
+ },
+ {
+ .user = &sAMAccountName,
+ .realm = &netbios_domain_l,
+ },
+ {
+ .user = &sAMAccountName_u,
+ .realm = &netbios_domain_l,
+ },
+ {
+ .user = &sAMAccountName_l,
+ .realm = &netbios_domain_u,
+ },
+ /*
+ * sAMAccountName, dns_domain
+ */
+ {
+ .user = &sAMAccountName,
+ .realm = &dns_domain,
+ },
+ {
+ .user = &sAMAccountName_l,
+ .realm = &dns_domain_l,
+ },
+ {
+ .user = &sAMAccountName_u,
+ .realm = &dns_domain_u,
+ },
+ {
+ .user = &sAMAccountName,
+ .realm = &dns_domain_u,
+ },
+ {
+ .user = &sAMAccountName,
+ .realm = &dns_domain_l,
+ },
+ {
+ .user = &sAMAccountName_u,
+ .realm = &dns_domain_l,
+ },
+ {
+ .user = &sAMAccountName_l,
+ .realm = &dns_domain_u,
+ },
+ /*
+ * userPrincipalName, no realm
+ */
+ {
+ .user = &userPrincipalName,
+ },
+ {
+ /*
+ * NOTE: w2k3 messes this up, if the user has a real userPrincipalName,
+ * the fallback to the sAMAccountName based userPrincipalName is correct
+ */
+ .user = &userPrincipalName_l,
+ },
+ {
+ .user = &userPrincipalName_u,
+ },
+ /*
+ * nt4dom\sAMAccountName, no realm
+ */
+ {
+ .user = &sAMAccountName,
+ .nt4dom = &netbios_domain
+ },
+ {
+ .user = &sAMAccountName_l,
+ .nt4dom = &netbios_domain_l
+ },
+ {
+ .user = &sAMAccountName_u,
+ .nt4dom = &netbios_domain_u
+ },
+
+ /*
+ * the following ones are guessed depending on the technet2 article
+ * but not reproducable on a w2k3 server
+ */
+ /* sAMAccountName with "Digest" realm */
+ {
+ .user = &sAMAccountName,
+ .realm = &digest
+ },
+ {
+ .user = &sAMAccountName_l,
+ .realm = &digest
+ },
+ {
+ .user = &sAMAccountName_u,
+ .realm = &digest
+ },
+ /* userPrincipalName with "Digest" realm */
+ {
+ .user = &userPrincipalName,
+ .realm = &digest
+ },
+ {
+ .user = &userPrincipalName_l,
+ .realm = &digest
+ },
+ {
+ .user = &userPrincipalName_u,
+ .realm = &digest
+ },
+ /* nt4dom\\sAMAccountName with "Digest" realm */
+ {
+ .user = &sAMAccountName,
+ .nt4dom = &netbios_domain,
+ .realm = &digest
+ },
+ {
+ .user = &sAMAccountName_l,
+ .nt4dom = &netbios_domain_l,
+ .realm = &digest
+ },
+ {
+ .user = &sAMAccountName_u,
+ .nt4dom = &netbios_domain_u,
+ .realm = &digest
+ },
+ };
+
+ /* prepare DATA_BLOB's used in the combinations array */
+ sAMAccountName = data_blob_string_const(io->u.sAMAccountName);
+ sAMAccountName_l = data_blob_string_const(strlower_talloc(io->ac, io->u.sAMAccountName));
+ if (!sAMAccountName_l.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ sAMAccountName_u = data_blob_string_const(strupper_talloc(io->ac, io->u.sAMAccountName));
+ if (!sAMAccountName_u.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* if the user doesn't have a userPrincipalName, create one (with lower case realm) */
+ if (!user_principal_name) {
+ user_principal_name = talloc_asprintf(io->ac, "%s@%s",
+ io->u.sAMAccountName,
+ io->domain->dns_domain);
+ if (!user_principal_name) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+ userPrincipalName = data_blob_string_const(user_principal_name);
+ userPrincipalName_l = data_blob_string_const(strlower_talloc(io->ac, user_principal_name));
+ if (!userPrincipalName_l.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ userPrincipalName_u = data_blob_string_const(strupper_talloc(io->ac, user_principal_name));
+ if (!userPrincipalName_u.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ netbios_domain = data_blob_string_const(io->domain->netbios_domain);
+ netbios_domain_l = data_blob_string_const(strlower_talloc(io->ac, io->domain->netbios_domain));
+ if (!netbios_domain_l.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ netbios_domain_u = data_blob_string_const(strupper_talloc(io->ac, io->domain->netbios_domain));
+ if (!netbios_domain_u.data) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ dns_domain = data_blob_string_const(io->domain->dns_domain);
+ dns_domain_l = data_blob_string_const(io->domain->dns_domain);
+ dns_domain_u = data_blob_string_const(io->domain->realm);
+
+ cleartext = data_blob_string_const(io->n.cleartext);
+
+ digest = data_blob_string_const("Digest");
+
+ delim = data_blob_string_const(":");
+ backslash = data_blob_string_const("\\");
+
+ pdb->num_hashes = ARRAY_SIZE(wdigest);
+ pdb->hashes = talloc_array(io->ac, struct package_PrimaryWDigestHash, pdb->num_hashes);
+ if (!pdb->hashes) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ for (i=0; i < ARRAY_SIZE(wdigest); i++) {
+ struct MD5Context md5;
+ MD5Init(&md5);
+ if (wdigest[i].nt4dom) {
+ MD5Update(&md5, wdigest[i].nt4dom->data, wdigest[i].nt4dom->length);
+ MD5Update(&md5, backslash.data, backslash.length);
+ }
+ MD5Update(&md5, wdigest[i].user->data, wdigest[i].user->length);
+ MD5Update(&md5, delim.data, delim.length);
+ if (wdigest[i].realm) {
+ MD5Update(&md5, wdigest[i].realm->data, wdigest[i].realm->length);
+ }
+ MD5Update(&md5, delim.data, delim.length);
+ MD5Update(&md5, cleartext.data, cleartext.length);
+ MD5Final(pdb->hashes[i].hash, &md5);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int setup_supplemental_field(struct setup_password_fields_io *io)
+{
+ struct supplementalCredentialsBlob scb;
+ struct supplementalCredentialsBlob _old_scb;
+ struct supplementalCredentialsBlob *old_scb = NULL;
+ /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest and CLEARTEXT) */
+ uint32_t num_names = 0;
+ const char *names[1+4];
+ uint32_t num_packages = 0;
+ struct supplementalCredentialsPackage packages[1+4];
+ /* Packages */
+ struct supplementalCredentialsPackage *pp = NULL;
+ struct package_PackagesBlob pb;
+ DATA_BLOB pb_blob;
+ char *pb_hexstr;
+ /* Primary:Kerberos-Newer-Keys */
+ const char **nkn = NULL;
+ struct supplementalCredentialsPackage *pkn = NULL;
+ struct package_PrimaryKerberosBlob pknb;
+ DATA_BLOB pknb_blob;
+ char *pknb_hexstr;
+ /* Primary:Kerberos */
+ const char **nk = NULL;
+ struct supplementalCredentialsPackage *pk = NULL;
+ struct package_PrimaryKerberosBlob pkb;
+ DATA_BLOB pkb_blob;
+ char *pkb_hexstr;
+ /* Primary:WDigest */
+ const char **nd = NULL;
+ struct supplementalCredentialsPackage *pd = NULL;
+ struct package_PrimaryWDigestBlob pdb;
+ DATA_BLOB pdb_blob;
+ char *pdb_hexstr;
+ /* Primary:CLEARTEXT */
+ const char **nc = NULL;
+ struct supplementalCredentialsPackage *pc = NULL;
+ struct package_PrimaryCLEARTEXTBlob pcb;
+ DATA_BLOB pcb_blob;
+ char *pcb_hexstr;
+ int ret;
+ enum ndr_err_code ndr_err;
+ uint8_t zero16[16];
+ bool do_newer_keys = false;
+ bool do_cleartext = false;
+
+ ZERO_STRUCT(zero16);
+ ZERO_STRUCT(names);
+
+ if (!io->n.cleartext) {
+ /*
+ * when we don't have a cleartext password
+ * we can't setup a supplementalCredential value
+ */
+ return LDB_SUCCESS;
+ }
+
+ /* if there's an old supplementaCredentials blob then parse it */
+ if (io->o.supplemental) {
+ ndr_err = ndr_pull_struct_blob_all(io->o.supplemental, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &_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(io->ac->module->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;
+ } else {
+ ldb_debug(io->ac->module->ldb, LDB_DEBUG_ERROR,
+ "setup_supplemental_field: "
+ "supplementalCredentialsBlob signature[0x%04X] expected[0x%04X]",
+ _old_scb.sub.signature, SUPPLEMENTAL_CREDENTIALS_SIGNATURE);
+ }
+ }
+
+ /* TODO: do the correct check for this, it maybe depends on the functional level? */
+ do_newer_keys = lp_parm_bool(ldb_get_opaque(io->ac->module->ldb, "loadparm"),
+ NULL, "password_hash", "create_aes_key", false);
+
+ if (io->domain->store_cleartext &&
+ (io->u.user_account_control & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED)) {
+ do_cleartext = true;
+ }
+
+ /*
+ * The ordering is this
+ *
+ * Primary:Kerberos-Newer-Keys (optional)
+ * Primary:Kerberos
+ * Primary:WDigest
+ * Primary:CLEARTEXT (optional)
+ *
+ * And the 'Packages' package is insert before the last
+ * other package.
+ */
+ if (do_newer_keys) {
+ /* Primary:Kerberos-Newer-Keys */
+ nkn = &names[num_names++];
+ pkn = &packages[num_packages++];
+ }
+
+ /* Primary:Kerberos */
+ nk = &names[num_names++];
+ pk = &packages[num_packages++];
+
+ if (!do_cleartext) {
+ /* Packages */
+ pp = &packages[num_packages++];
+ }
+
+ /* Primary:WDigest */
+ nd = &names[num_names++];
+ pd = &packages[num_packages++];
+
+ if (do_cleartext) {
+ /* Packages */
+ pp = &packages[num_packages++];
+
+ /* Primary:CLEARTEXT */
+ nc = &names[num_names++];
+ pc = &packages[num_packages++];
+ }
+
+ if (pkn) {
+ /*
+ * setup 'Primary:Kerberos-Newer-Keys' element
+ */
+ *nkn = "Kerberos-Newer-Keys";
+
+ ret = setup_primary_kerberos_newer(io, old_scb, &pknb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ndr_err = ndr_push_struct_blob(&pknb_blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &pknb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryKerberosNeverBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pknb_hexstr = data_blob_hex_string(io->ac, &pknb_blob);
+ if (!pknb_hexstr) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pkn->name = "Primary:Kerberos-Newer-Keys";
+ pkn->reserved = 1;
+ pkn->data = pknb_hexstr;
+ }
+
+ /*
+ * setup 'Primary:Kerberos' element
+ */
+ *nk = "Kerberos";
+
+ ret = setup_primary_kerberos(io, old_scb, &pkb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ndr_err = ndr_push_struct_blob(&pkb_blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &pkb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryKerberosBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pkb_hexstr = data_blob_hex_string(io->ac, &pkb_blob);
+ if (!pkb_hexstr) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pk->name = "Primary:Kerberos";
+ pk->reserved = 1;
+ pk->data = pkb_hexstr;
+
+ /*
+ * setup 'Primary:WDigest' element
+ */
+ *nd = "WDigest";
+
+ ret = setup_primary_wdigest(io, old_scb, &pdb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ndr_err = ndr_push_struct_blob(&pdb_blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &pdb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryWDigestBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryWDigestBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pdb_hexstr = data_blob_hex_string(io->ac, &pdb_blob);
+ if (!pdb_hexstr) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pd->name = "Primary:WDigest";
+ pd->reserved = 1;
+ pd->data = pdb_hexstr;
+
+ /*
+ * setup 'Primary:CLEARTEXT' element
+ */
+ if (pc) {
+ *nc = "CLEARTEXT";
+
+ pcb.cleartext = io->n.cleartext;
+
+ ndr_err = ndr_push_struct_blob(&pcb_blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &pcb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryCLEARTEXTBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryCLEARTEXTBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pcb_hexstr = data_blob_hex_string(io->ac, &pcb_blob);
+ if (!pcb_hexstr) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pc->name = "Primary:CLEARTEXT";
+ pc->reserved = 1;
+ pc->data = pcb_hexstr;
+ }
+
+ /*
+ * setup 'Packages' element
+ */
+ pb.names = names;
+ ndr_err = ndr_push_struct_blob(&pb_blob, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &pb,
+ (ndr_push_flags_fn_t)ndr_push_package_PackagesBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PackagesBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pb_hexstr = data_blob_hex_string(io->ac, &pb_blob);
+ if (!pb_hexstr) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pp->name = "Packages";
+ pp->reserved = 2;
+ pp->data = pb_hexstr;
+
+ /*
+ * setup 'supplementalCredentials' value
+ */
+ ZERO_STRUCT(scb);
+ scb.sub.num_packages = num_packages;
+ scb.sub.packages = packages;
+
+ ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
+ lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
+ &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(io->ac->module->ldb,
+ "setup_supplemental_field: "
+ "failed to push supplementalCredentialsBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+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));
+
+ return LDB_SUCCESS;
+}
+
+static int setup_kvno_field(struct setup_password_fields_io *io)
+{
+ /* increment by one */
+ io->g.kvno = io->o.kvno + 1;
+
+ return LDB_SUCCESS;
+}
+
+static int setup_password_fields(struct setup_password_fields_io *io)
+{
+ bool ok;
+ int ret;
+
+ /*
+ * refuse the change if someone want to change the cleartext
+ * and supply his own hashes at the same time...
+ */
+ if (io->n.cleartext && (io->n.nt_hash || io->n.lm_hash)) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_password_fields: "
+ "it's only allowed to set the cleartext password or the password hashes");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ if (io->n.cleartext) {
+ struct samr_Password *hash;
+
+ hash = talloc(io->ac, struct samr_Password);
+ if (!hash) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* compute the new nt hash */
+ ok = E_md4hash(io->n.cleartext, hash->hash);
+ if (ok) {
+ io->n.nt_hash = hash;
+ } else {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_password_fields: "
+ "failed to generate nthash from cleartext password");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ if (io->n.cleartext) {
+ struct samr_Password *hash;
+
+ hash = talloc(io->ac, struct samr_Password);
+ if (!hash) {
+ ldb_oom(io->ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* compute the new lm hash */
+ ok = E_deshash(io->n.cleartext, hash->hash);
+ if (ok) {
+ io->n.lm_hash = hash;
+ } else {
+ talloc_free(hash->hash);
+ }
+ }
+
+ if (io->n.cleartext) {
+ ret = setup_kerberos_keys(io);
+ if (ret != 0) {
+ return ret;
+ }
+ }
+
+ ret = setup_nt_fields(io);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = setup_lm_fields(io);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = setup_supplemental_field(io);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = setup_last_set_field(io);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = setup_kvno_field(io);
+ if (ret != 0) {
+ return ret;
+ }
+
+ return LDB_SUCCESS;
+}
+
+static struct ldb_handle *ph_init_handle(struct ldb_request *req, struct ldb_module *module, enum ph_type type)
+{
+ struct ph_context *ac;
+ struct ldb_handle *h;
+
+ h = talloc_zero(req, struct ldb_handle);
+ if (h == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ return NULL;
+ }
+
+ h->module = module;
+
+ ac = talloc_zero(h, struct ph_context);
+ if (ac == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ talloc_free(h);
+ return NULL;
+ }
+
+ h->private_data = (void *)ac;
+
+ h->state = LDB_ASYNC_INIT;
+ h->status = LDB_SUCCESS;
+
+ ac->type = type;
+ ac->module = module;
+ ac->orig_req = req;
+
+ return h;
+}
+
+static int get_domain_data_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+{
+ struct ph_context *ac;
+
+ ac = talloc_get_type(context, struct ph_context);
+
+ /* we are interested only in the single reply (base search) we receive here */
+ if (ares->type == LDB_REPLY_ENTRY) {
+ if (ac->dom_res != NULL) {
+ ldb_set_errstring(ldb, "Too many results");
+ talloc_free(ares);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->dom_res = talloc_steal(ac, ares);
+ } else {
+ talloc_free(ares);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int build_domain_data_request(struct ph_context *ac)
+{
+ /* attrs[] is returned from this function in
+ ac->dom_req->op.search.attrs, so it must be static, as
+ otherwise the compiler can put it on the stack */
+ static const char * const attrs[] = { "pwdProperties", "pwdHistoryLength", NULL };
+ char *filter;
+
+ ac->dom_req = talloc_zero(ac, struct ldb_request);
+ if (ac->dom_req == NULL) {
+ ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->dom_req->operation = LDB_SEARCH;
+ ac->dom_req->op.search.base = ldb_get_default_basedn(ac->module->ldb);
+ ac->dom_req->op.search.scope = LDB_SCOPE_SUBTREE;
+
+ filter = talloc_asprintf(ac->dom_req,
+ "(&(objectSid=%s)(|(|(objectClass=domain)(objectClass=builtinDomain))(objectClass=samba4LocalDomain)))",
+ ldap_encode_ndr_dom_sid(ac->dom_req, ac->domain_sid));
+ if (filter == NULL) {
+ ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
+ talloc_free(ac->dom_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->dom_req->op.search.tree = ldb_parse_tree(ac->dom_req, filter);
+ if (ac->dom_req->op.search.tree == NULL) {
+ ldb_set_errstring(ac->module->ldb, "Invalid search filter");
+ talloc_free(ac->dom_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->dom_req->op.search.attrs = attrs;
+ ac->dom_req->controls = NULL;
+ ac->dom_req->context = ac;
+ ac->dom_req->callback = get_domain_data_callback;
+ ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->dom_req);
+
+ return LDB_SUCCESS;
+}
+
+static struct domain_data *get_domain_data(struct ldb_module *module, void *ctx, struct ldb_reply *res)
+{
+ struct domain_data *data;
+ const char *tmp;
+ struct ph_context *ac;
+ char *p;
+
+ ac = talloc_get_type(ctx, struct ph_context);
+
+ data = talloc_zero(ac, struct domain_data);
+ if (data == NULL) {
+ return NULL;
+ }
+
+ if (res == NULL) {
+ ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Could not find this user's domain: %s!\n", dom_sid_string(data, ac->domain_sid));
+ talloc_free(data);
+ return NULL;
+ }
+
+ data->pwdProperties= samdb_result_uint(res->message, "pwdProperties", 0);
+ data->store_cleartext = data->pwdProperties & DOMAIN_PASSWORD_STORE_CLEARTEXT;
+ data->pwdHistoryLength = samdb_result_uint(res->message, "pwdHistoryLength", 0);
+
+ /* 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
+ * and kerberos principals, which don't exist here */
+
+ tmp = ldb_dn_canonical_string(ctx, res->message->dn);
+ if (!tmp) {
+ return NULL;
+ }
+
+ /* But it puts a trailing (or just before 'builtin') / on things, so kill that */
+ p = strchr(tmp, '/');
+ if (p) {
+ p[0] = '\0';
+ }
+
+ if (tmp != NULL) {
+ data->dns_domain = strlower_talloc(data, tmp);
+ if (data->dns_domain == NULL) {
+ ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
+ return NULL;
+ }
+ data->realm = strupper_talloc(data, tmp);
+ if (data->realm == NULL) {
+ ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
+ return NULL;
+ }
+ p = strchr(tmp, '.');
+ if (p) {
+ p[0] = '\0';
+ }
+ data->netbios_domain = strupper_talloc(data, tmp);
+ if (data->netbios_domain == NULL) {
+ ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
+ return NULL;
+ }
+ }
+
+ return data;
+}
+
+static int password_hash_add(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_handle *h;
+ struct ph_context *ac;
+ struct ldb_message_element *sambaAttr;
+ struct ldb_message_element *ntAttr;
+ struct ldb_message_element *lmAttr;
+ int ret;
+
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "password_hash_add\n");
+
+ if (ldb_dn_is_special(req->op.add.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, module->ldb, LOCAL_BASE),
+ req->op.add.message->dn) == 0) {
+ return ldb_next_request(module, req);
+ }
+
+ /* nobody must touch this fields */
+ if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ /* If no part of this ADD touches the userPassword, or the NT
+ * or LM hashes, then we don't need to make any changes. */
+
+ sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
+ ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
+ lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
+
+ if ((!sambaAttr) && (!ntAttr) && (!lmAttr)) {
+ return ldb_next_request(module, req);
+ }
+
+ /* if it is not an entry of type person its an error */
+ /* TODO: remove this when userPassword will be in schema */
+ if (!ldb_msg_check_string_attribute(req->op.add.message, "objectClass", "person")) {
+ ldb_set_errstring(module->ldb, "Cannot set a password on entry that does not have objectClass 'person'");
+ return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ }
+
+ /* check userPassword is single valued here */
+ /* TODO: remove this when userPassword will be single valued in schema */
+ if (sambaAttr && sambaAttr->num_values > 1) {
+ ldb_set_errstring(module->ldb, "mupltiple values for userPassword not allowed!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ if (ntAttr && (ntAttr->num_values > 1)) {
+ ldb_set_errstring(module->ldb, "mupltiple values for unicodePwd not allowed!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (lmAttr && (lmAttr->num_values > 1)) {
+ ldb_set_errstring(module->ldb, "mupltiple values for dBCSPwd not allowed!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ if (sambaAttr && sambaAttr->num_values == 0) {
+ ldb_set_errstring(module->ldb, "userPassword must have a value!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ if (ntAttr && (ntAttr->num_values == 0)) {
+ ldb_set_errstring(module->ldb, "unicodePwd must have a value!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (lmAttr && (lmAttr->num_values == 0)) {
+ ldb_set_errstring(module->ldb, "dBCSPwd must have a value!\n");
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ h = ph_init_handle(req, module, PH_ADD);
+ if (!h) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ /* get user domain data */
+ ac->domain_sid = samdb_result_sid_prefix(ac, req->op.add.message, "objectSid");
+ if (ac->domain_sid == NULL) {
+ ldb_debug(module->ldb, LDB_DEBUG_ERROR, "can't handle entry with missing objectSid!\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = build_domain_data_request(ac);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ac->step = PH_ADD_SEARCH_DOM;
+
+ req->handle = h;
+
+ return ldb_next_request(module, ac->dom_req);
+}
+
+static int password_hash_add_do_add(struct ldb_handle *h) {
+
+ struct ph_context *ac;
+ struct domain_data *domain;
+ struct smb_krb5_context *smb_krb5_context;
+ struct ldb_message *msg;
+ struct setup_password_fields_io io;
+ int ret;
+
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ domain = get_domain_data(ac->module, ac, ac->dom_res);
+ if (domain == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->down_req = talloc(ac, struct ldb_request);
+ if (ac->down_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ *(ac->down_req) = *(ac->orig_req);
+ ac->down_req->op.add.message = msg = ldb_msg_copy_shallow(ac->down_req, ac->orig_req->op.add.message);
+ if (ac->down_req->op.add.message == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* Some operations below require kerberos contexts */
+ if (smb_krb5_init_context(ac->down_req,
+ ldb_get_opaque(h->module->ldb, "EventContext"),
+ (struct loadparm_context *)ldb_get_opaque(h->module->ldb, "loadparm"),
+ &smb_krb5_context) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ZERO_STRUCT(io);
+ io.ac = ac;
+ io.domain = domain;
+ io.smb_krb5_context = smb_krb5_context;
+
+ io.u.user_account_control = samdb_result_uint(msg, "userAccountControl", 0);
+ io.u.sAMAccountName = samdb_result_string(msg, "samAccountName", NULL);
+ io.u.user_principal_name = samdb_result_string(msg, "userPrincipalName", NULL);
+ io.u.is_computer = ldb_msg_check_string_attribute(msg, "objectClass", "computer");
+
+ io.n.cleartext = samdb_result_string(msg, "userPassword", NULL);
+ io.n.nt_hash = samdb_result_hash(io.ac, msg, "unicodePwd");
+ io.n.lm_hash = samdb_result_hash(io.ac, msg, "dBCSPwd");
+
+ /* remove attributes */
+ if (io.n.cleartext) ldb_msg_remove_attr(msg, "userPassword");
+ if (io.n.nt_hash) ldb_msg_remove_attr(msg, "unicodePwd");
+ if (io.n.lm_hash) ldb_msg_remove_attr(msg, "dBCSPwd");
+ ldb_msg_remove_attr(msg, "pwdLastSet");
+ io.o.kvno = samdb_result_uint(msg, "msDs-KeyVersionNumber", 1) - 1;
+ ldb_msg_remove_attr(msg, "msDs-KeyVersionNumber");
+
+ ret = setup_password_fields(&io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ if (io.g.nt_hash) {
+ ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
+ "unicodePwd", io.g.nt_hash);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io.g.lm_hash) {
+ ret = samdb_msg_add_hash(ac->module->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(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(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 = samdb_msg_add_uint64(ac->module->ldb, ac, msg,
+ "pwdLastSet",
+ io.g.last_set);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret = samdb_msg_add_uint(ac->module->ldb, ac, msg,
+ "msDs-KeyVersionNumber",
+ io.g.kvno);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ h->state = LDB_ASYNC_INIT;
+ h->status = LDB_SUCCESS;
+
+ ac->step = PH_ADD_DO_ADD;
+
+ ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->down_req);
+
+ /* perform the operation */
+ return ldb_next_request(ac->module, ac->down_req);
+}
+
+static int password_hash_mod_search_self(struct ldb_handle *h);
+
+static int password_hash_modify(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_handle *h;
+ struct ph_context *ac;
+ struct ldb_message_element *sambaAttr;
+ struct ldb_message_element *ntAttr;
+ struct ldb_message_element *lmAttr;
+ struct ldb_message *msg;
+
+ ldb_debug(module->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, module->ldb, LOCAL_BASE),
+ req->op.mod.message->dn) == 0) {
+ return ldb_next_request(module, req);
+ }
+
+ /* nobody must touch password Histories */
+ if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
+ ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
+ lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
+
+ /* If no part of this touches the userPassword OR unicodePwd and/or dBCSPwd, then we don't
+ * need to make any changes. For password changes/set there should
+ * be a 'delete' or a 'modify' on this attribute. */
+ if ((!sambaAttr) && (!ntAttr) && (!lmAttr)) {
+ return ldb_next_request(module, req);
+ }
+
+ /* check passwords are single valued here */
+ /* TODO: remove this when passwords will be single valued in schema */
+ if (sambaAttr && (sambaAttr->num_values > 1)) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (ntAttr && (ntAttr->num_values > 1)) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (lmAttr && (lmAttr->num_values > 1)) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ h = ph_init_handle(req, module, PH_MOD);
+ if (!h) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ /* return or own handle to deal with this call */
+ req->handle = h;
+
+ /* prepare the first operation */
+ ac->down_req = talloc_zero(ac, struct ldb_request);
+ if (ac->down_req == NULL) {
+ ldb_set_errstring(module->ldb, "Out of memory!");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ *(ac->down_req) = *req; /* copy the request */
+
+ /* use a new message structure so that we can modify it */
+ ac->down_req->op.mod.message = msg = ldb_msg_copy_shallow(ac->down_req, req->op.mod.message);
+
+ /* - remove any imodification to the password from the first commit
+ * we will make the real modification later */
+ if (sambaAttr) ldb_msg_remove_attr(msg, "userPassword");
+ if (ntAttr) ldb_msg_remove_attr(msg, "unicodePwd");
+ if (lmAttr) ldb_msg_remove_attr(msg, "dBCSPwd");
+
+ /* if there was nothing else to be modify skip to next step */
+ if (msg->num_elements == 0) {
+ talloc_free(ac->down_req);
+ ac->down_req = NULL;
+ return password_hash_mod_search_self(h);
+ }
+
+ ac->down_req->context = NULL;
+ ac->down_req->callback = NULL;
+
+ ac->step = PH_MOD_DO_REQ;
+
+ ldb_set_timeout_from_prev_req(module->ldb, req, ac->down_req);
+
+ return ldb_next_request(module, ac->down_req);
+}
+
+static int get_self_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+{
+ struct ph_context *ac;
+
+ ac = talloc_get_type(context, struct ph_context);
+
+ /* we are interested only in the single reply (base search) we receive here */
+ if (ares->type == LDB_REPLY_ENTRY) {
+ if (ac->search_res != NULL) {
+ ldb_set_errstring(ldb, "Too many results");
+ talloc_free(ares);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* if it is not an entry of type person this is an error */
+ /* TODO: remove this when userPassword will be in schema */
+ if (!ldb_msg_check_string_attribute(ares->message, "objectClass", "person")) {
+ ldb_set_errstring(ldb, "Object class violation");
+ talloc_free(ares);
+ return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ }
+
+ ac->search_res = talloc_steal(ac, ares);
+ } else {
+ talloc_free(ares);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int password_hash_mod_search_self(struct ldb_handle *h) {
+
+ struct ph_context *ac;
+ static const char * const attrs[] = { "userAccountControl", "lmPwdHistory",
+ "ntPwdHistory",
+ "objectSid", "msDS-KeyVersionNumber",
+ "objectClass", "userPrincipalName",
+ "sAMAccountName",
+ "dBCSPwd", "unicodePwd",
+ "supplementalCredentials",
+ NULL };
+
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ /* prepare the search operation */
+ ac->search_req = talloc_zero(ac, struct ldb_request);
+ if (ac->search_req == NULL) {
+ ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->search_req->operation = LDB_SEARCH;
+ ac->search_req->op.search.base = ac->orig_req->op.mod.message->dn;
+ ac->search_req->op.search.scope = LDB_SCOPE_BASE;
+ ac->search_req->op.search.tree = ldb_parse_tree(ac->search_req, NULL);
+ if (ac->search_req->op.search.tree == NULL) {
+ ldb_set_errstring(ac->module->ldb, "Invalid search filter");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->search_req->op.search.attrs = attrs;
+ ac->search_req->controls = NULL;
+ ac->search_req->context = ac;
+ ac->search_req->callback = get_self_callback;
+ ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->search_req);
+
+ ac->step = PH_MOD_SEARCH_SELF;
+
+ return ldb_next_request(ac->module, ac->search_req);
+}
+
+static int password_hash_mod_search_dom(struct ldb_handle *h) {
+
+ struct ph_context *ac;
+ int ret;
+
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ /* get object domain sid */
+ ac->domain_sid = samdb_result_sid_prefix(ac, ac->search_res->message, "objectSid");
+ if (ac->domain_sid == NULL) {
+ ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "can't handle entry with missing objectSid!\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* get user domain data */
+ ret = build_domain_data_request(ac);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ac->step = PH_MOD_SEARCH_DOM;
+
+ return ldb_next_request(ac->module, ac->dom_req);
+}
+
+static int password_hash_mod_do_mod(struct ldb_handle *h) {
+
+ struct ph_context *ac;
+ struct domain_data *domain;
+ struct smb_krb5_context *smb_krb5_context;
+ struct ldb_message *msg;
+ struct ldb_message *orig_msg;
+ struct ldb_message *searched_msg;
+ struct setup_password_fields_io io;
+ int ret;
+
+ ac = talloc_get_type(h->private_data, struct ph_context);
+
+ domain = get_domain_data(ac->module, ac, ac->dom_res);
+ if (domain == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->mod_req = talloc(ac, struct ldb_request);
+ if (ac->mod_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ *(ac->mod_req) = *(ac->orig_req);
+
+ /* use a new message structure so that we can modify it */
+ ac->mod_req->op.mod.message = msg = ldb_msg_new(ac->mod_req);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* modify dn */
+ msg->dn = ac->orig_req->op.mod.message->dn;
+
+ /* Some operations below require kerberos contexts */
+ if (smb_krb5_init_context(ac->mod_req,
+ ldb_get_opaque(h->module->ldb, "EventContext"),
+ (struct loadparm_context *)ldb_get_opaque(h->module->ldb, "loadparm"),
+ &smb_krb5_context) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ orig_msg = discard_const(ac->orig_req->op.mod.message);
+ searched_msg = ac->search_res->message;
+
+ ZERO_STRUCT(io);
+ io.ac = ac;
+ io.domain = domain;
+ io.smb_krb5_context = smb_krb5_context;
+
+ io.u.user_account_control = samdb_result_uint(searched_msg, "userAccountControl", 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.n.cleartext = samdb_result_string(orig_msg, "userPassword", NULL);
+ io.n.nt_hash = samdb_result_hash(io.ac, orig_msg, "unicodePwd");
+ io.n.lm_hash = samdb_result_hash(io.ac, orig_msg, "dBCSPwd");
+
+ io.o.kvno = samdb_result_uint(searched_msg, "msDs-KeyVersionNumber", 0);
+ 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);
+ ret = ldb_msg_add_empty(msg, "msDs-KeyVersionNumber", LDB_FLAG_MOD_REPLACE, NULL);
+
+ if (io.g.nt_hash) {
+ ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
+ "unicodePwd", io.g.nt_hash);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ if (io.g.lm_hash) {
+ ret = samdb_msg_add_hash(ac->module->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(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(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 = samdb_msg_add_uint64(ac->module->ldb, ac, msg,
+ "pwdLastSet",
+ io.g.last_set);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret = samdb_msg_add_uint(ac->module->ldb, ac, msg,
+ "msDs-KeyVersionNumber",
+ io.g.kvno);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ h->state = LDB_ASYNC_INIT;
+ h->status = LDB_SUCCESS;
+
+ ac->step = PH_MOD_DO_MOD;
+
+ ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->mod_req);
+
+ /* perform the search */
+ return ldb_next_request(ac->module, ac->mod_req);
+}
+
+static int ph_wait(struct ldb_handle *handle) {
+ struct ph_context *ac;
+ int ret;
+
+ if (!handle || !handle->private_data) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (handle->state == LDB_ASYNC_DONE) {
+ return handle->status;
+ }
+
+ handle->state = LDB_ASYNC_PENDING;
+ handle->status = LDB_SUCCESS;
+
+ ac = talloc_get_type(handle->private_data, struct ph_context);
+
+ switch (ac->step) {
+ case PH_ADD_SEARCH_DOM:
+ ret = ldb_wait(ac->dom_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->dom_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->dom_req->handle->status;
+ goto done;
+ }
+
+ if (ac->dom_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ /* domain search done, go on */
+ return password_hash_add_do_add(handle);
+
+ case PH_ADD_DO_ADD:
+ ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->down_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->down_req->handle->status;
+ goto done;
+ }
+
+ if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ break;
+
+ case PH_MOD_DO_REQ:
+ ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->down_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->down_req->handle->status;
+ goto done;
+ }
+
+ if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ /* non-password mods done, go on */
+ return password_hash_mod_search_self(handle);
+
+ case PH_MOD_SEARCH_SELF:
+ ret = ldb_wait(ac->search_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->search_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->search_req->handle->status;
+ goto done;
+ }
+
+ if (ac->search_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ if (ac->search_res == NULL) {
+ return LDB_ERR_NO_SUCH_OBJECT;
+ }
+
+ /* self search done, go on */
+ return password_hash_mod_search_dom(handle);
+
+ case PH_MOD_SEARCH_DOM:
+ ret = ldb_wait(ac->dom_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->dom_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->dom_req->handle->status;
+ goto done;
+ }
+
+ if (ac->dom_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ /* domain search done, go on */
+ return password_hash_mod_do_mod(handle);
+
+ case PH_MOD_DO_MOD:
+ ret = ldb_wait(ac->mod_req->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->mod_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->mod_req->handle->status;
+ goto done;
+ }
+
+ if (ac->mod_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ break;
+
+ default:
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ret = LDB_SUCCESS;
+
+done:
+ handle->state = LDB_ASYNC_DONE;
+ return ret;
+}
+
+static int ph_wait_all(struct ldb_handle *handle) {
+
+ int ret;
+
+ while (handle->state != LDB_ASYNC_DONE) {
+ ret = ph_wait(handle);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return handle->status;
+}
+
+static int password_hash_wait(struct ldb_handle *handle, enum ldb_wait_type type)
+{
+ if (type == LDB_WAIT_ALL) {
+ return ph_wait_all(handle);
+ } else {
+ return ph_wait(handle);
+ }
+}
+
+_PUBLIC_ const struct ldb_module_ops ldb_password_hash_module_ops = {
+ .name = "password_hash",
+ .add = password_hash_add,
+ .modify = password_hash_modify,
+ .wait = password_hash_wait
+};