diff options
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/password_hash.c')
-rw-r--r-- | source4/dsdb/samdb/ldb_modules/password_hash.c | 2281 |
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 +}; |