diff options
author | Andrew Bartlett <abartlet@samba.org> | 2008-09-24 12:53:10 -0700 |
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committer | Andrew Bartlett <abartlet@samba.org> | 2008-09-29 22:34:35 -0700 |
commit | 6ad78f01a5982666c83025a94ce4ff3729d5db6f (patch) | |
tree | b440f90fefd1e64479625d8dd63b5f43f4e10255 /source4/kdc/hdb-ldb.c | |
parent | 8dd35fabbb4732cf601a93abbe0373fd53e661a1 (diff) | |
download | samba-6ad78f01a5982666c83025a94ce4ff3729d5db6f.tar.gz samba-6ad78f01a5982666c83025a94ce4ff3729d5db6f.tar.bz2 samba-6ad78f01a5982666c83025a94ce4ff3729d5db6f.zip |
Rename hdb_ldb to hdb_samba4 and load as a plugin into the kdc.
This avoids one more custom patch to the Heimdal code, and provides a
more standard way to produce hdb plugins in future.
I've renamed from hdb_ldb to hdb_samba4 as it really is not generic
ldb.
Andrew Bartlett
Diffstat (limited to 'source4/kdc/hdb-ldb.c')
-rw-r--r-- | source4/kdc/hdb-ldb.c | 1550 |
1 files changed, 0 insertions, 1550 deletions
diff --git a/source4/kdc/hdb-ldb.c b/source4/kdc/hdb-ldb.c deleted file mode 100644 index 4fde75cf70..0000000000 --- a/source4/kdc/hdb-ldb.c +++ /dev/null @@ -1,1550 +0,0 @@ -/* - * Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd. - * Copyright (c) 2004, Andrew Bartlett <abartlet@samba.org>. - * Copyright (c) 2004, Stefan Metzmacher <metze@samba.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of PADL Software nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "includes.h" -#include "system/time.h" -#include "dsdb/common/flags.h" -#include "lib/ldb/include/ldb.h" -#include "lib/ldb/include/ldb_errors.h" -#include "librpc/gen_ndr/netlogon.h" -#include "auth/auth.h" -#include "auth/credentials/credentials.h" -#include "auth/auth_sam.h" -#include "util/util_ldb.h" -#include "dsdb/samdb/samdb.h" -#include "librpc/ndr/libndr.h" -#include "librpc/gen_ndr/ndr_drsblobs.h" -#include "librpc/gen_ndr/lsa.h" -#include "libcli/auth/libcli_auth.h" -#include "param/param.h" -#include "events/events.h" -#include "kdc/kdc.h" -#include "../lib/crypto/md4.h" - -enum hdb_ldb_ent_type -{ HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER, - HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_TRUST, HDB_LDB_ENT_TYPE_ANY }; - -enum trust_direction { - UNKNOWN = 0, - INBOUND = LSA_TRUST_DIRECTION_INBOUND, - OUTBOUND = LSA_TRUST_DIRECTION_OUTBOUND -}; - -static const char *realm_ref_attrs[] = { - "nCName", - "dnsRoot", - NULL -}; - -static const char *trust_attrs[] = { - "trustPartner", - "trustAuthIncoming", - "trustAuthOutgoing", - "whenCreated", - "msDS-SupportedEncryptionTypes", - "trustAttributes", - "trustDirection", - "trustType", - NULL -}; - -static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val) -{ - const char *tmp; - const char *gentime; - struct tm tm; - - gentime = ldb_msg_find_attr_as_string(msg, attr, NULL); - if (!gentime) - return default_val; - - tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm); - if (tmp == NULL) { - return default_val; - } - - return timegm(&tm); -} - -static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type) -{ - HDBFlags flags = int2HDBFlags(0); - - /* we don't allow kadmin deletes */ - flags.immutable = 1; - - /* mark the principal as invalid to start with */ - flags.invalid = 1; - - flags.renewable = 1; - - /* All accounts are servers, but this may be disabled again in the caller */ - flags.server = 1; - - /* Account types - clear the invalid bit if it turns out to be valid */ - if (userAccountControl & UF_NORMAL_ACCOUNT) { - if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) { - flags.client = 1; - } - flags.invalid = 0; - } - - if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) { - if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) { - flags.client = 1; - } - flags.invalid = 0; - } - if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) { - if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) { - flags.client = 1; - } - flags.invalid = 0; - } - if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) { - if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) { - flags.client = 1; - } - flags.invalid = 0; - } - - /* Not permitted to act as a client if disabled */ - if (userAccountControl & UF_ACCOUNTDISABLE) { - flags.client = 0; - } - if (userAccountControl & UF_LOCKOUT) { - flags.invalid = 1; - } -/* - if (userAccountControl & UF_PASSWORD_NOTREQD) { - flags.invalid = 1; - } -*/ -/* - UF_PASSWORD_CANT_CHANGE and UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED are irrelevent -*/ - if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) { - flags.invalid = 1; - } - -/* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */ - -/* - if (userAccountControl & UF_MNS_LOGON_ACCOUNT) { - flags.invalid = 1; - } -*/ - if (userAccountControl & UF_SMARTCARD_REQUIRED) { - flags.require_hwauth = 1; - } - if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) { - flags.ok_as_delegate = 1; - } - if (!(userAccountControl & UF_NOT_DELEGATED)) { - flags.forwardable = 1; - flags.proxiable = 1; - } - - if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) { - flags.require_preauth = 0; - } else { - flags.require_preauth = 1; - - } - return flags; -} - -static int hdb_ldb_destructor(struct hdb_ldb_private *private) -{ - hdb_entry_ex *entry_ex = private->entry_ex; - free_hdb_entry(&entry_ex->entry); - return 0; -} - -static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex) -{ - talloc_free(entry_ex->ctx); -} - -static krb5_error_code LDB_message2entry_keys(krb5_context context, - struct smb_iconv_convenience *iconv_convenience, - TALLOC_CTX *mem_ctx, - struct ldb_message *msg, - unsigned int userAccountControl, - hdb_entry_ex *entry_ex) -{ - krb5_error_code ret = 0; - enum ndr_err_code ndr_err; - struct samr_Password *hash; - const struct ldb_val *sc_val; - struct supplementalCredentialsBlob scb; - struct supplementalCredentialsPackage *scpk = NULL; - bool newer_keys = false; - struct package_PrimaryKerberosBlob _pkb; - struct package_PrimaryKerberosCtr3 *pkb3 = NULL; - struct package_PrimaryKerberosCtr4 *pkb4 = NULL; - uint32_t i; - uint32_t allocated_keys = 0; - - entry_ex->entry.keys.val = NULL; - entry_ex->entry.keys.len = 0; - - entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0); - - /* Get keys from the db */ - - hash = samdb_result_hash(mem_ctx, msg, "unicodePwd"); - sc_val = ldb_msg_find_ldb_val(msg, "supplementalCredentials"); - - /* unicodePwd for enctype 0x17 (23) if present */ - if (hash) { - allocated_keys++; - } - - /* supplementalCredentials if present */ - if (sc_val) { - ndr_err = ndr_pull_struct_blob_all(sc_val, mem_ctx, iconv_convenience, &scb, - (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - dump_data(0, sc_val->data, sc_val->length); - ret = EINVAL; - goto out; - } - - if (scb.sub.signature != SUPPLEMENTAL_CREDENTIALS_SIGNATURE) { - NDR_PRINT_DEBUG(supplementalCredentialsBlob, &scb); - ret = EINVAL; - goto out; - } - - for (i=0; i < scb.sub.num_packages; i++) { - if (strcmp("Primary:Kerberos-Newer-Keys", scb.sub.packages[i].name) == 0) { - scpk = &scb.sub.packages[i]; - if (!scpk->data || !scpk->data[0]) { - scpk = NULL; - continue; - } - newer_keys = true; - break; - } else if (strcmp("Primary:Kerberos", scb.sub.packages[i].name) == 0) { - scpk = &scb.sub.packages[i]; - if (!scpk->data || !scpk->data[0]) { - scpk = NULL; - } - /* - * we don't break here in hope to find - * a Kerberos-Newer-Keys package - */ - } - } - } - /* - * Primary:Kerberos-Newer-Keys or Primary:Kerberos element - * of supplementalCredentials - */ - if (scpk) { - DATA_BLOB blob; - - blob = strhex_to_data_blob(scpk->data); - if (!blob.data) { - ret = ENOMEM; - goto out; - } - talloc_steal(mem_ctx, blob.data); - - /* we cannot use ndr_pull_struct_blob_all() here, as w2k and w2k3 add padding bytes */ - ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, iconv_convenience, &_pkb, - (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - krb5_set_error_string(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob"); - krb5_warnx(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob"); - ret = EINVAL; - goto out; - } - - if (newer_keys && _pkb.version != 4) { - krb5_set_error_string(context, "LDB_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4"); - krb5_warnx(context, "LDB_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4"); - ret = EINVAL; - goto out; - } - - if (!newer_keys && _pkb.version != 3) { - krb5_set_error_string(context, "LDB_message2entry_keys: could not parse Primary:Kerberos not version 3"); - krb5_warnx(context, "LDB_message2entry_keys: could not parse Primary:Kerberos not version 3"); - ret = EINVAL; - goto out; - } - - if (_pkb.version == 4) { - pkb4 = &_pkb.ctr.ctr4; - allocated_keys += pkb4->num_keys; - } else if (_pkb.version == 3) { - pkb3 = &_pkb.ctr.ctr3; - allocated_keys += pkb3->num_keys; - } - } - - if (allocated_keys == 0) { - /* oh, no password. Apparently (comment in - * hdb-ldap.c) this violates the ASN.1, but this - * allows an entry with no keys (yet). */ - return 0; - } - - /* allocate space to decode into */ - entry_ex->entry.keys.len = 0; - entry_ex->entry.keys.val = calloc(allocated_keys, sizeof(Key)); - if (entry_ex->entry.keys.val == NULL) { - ret = ENOMEM; - goto out; - } - - if (hash && !(userAccountControl & UF_USE_DES_KEY_ONLY)) { - Key key; - - key.mkvno = 0; - key.salt = NULL; /* No salt for this enc type */ - - ret = krb5_keyblock_init(context, - ENCTYPE_ARCFOUR_HMAC_MD5, - hash->hash, sizeof(hash->hash), - &key.key); - if (ret) { - goto out; - } - - entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key; - entry_ex->entry.keys.len++; - } - - if (pkb4) { - for (i=0; i < pkb4->num_keys; i++) { - bool use = true; - Key key; - - if (!pkb4->keys[i].value) continue; - - if (userAccountControl & UF_USE_DES_KEY_ONLY) { - switch (pkb4->keys[i].keytype) { - case ENCTYPE_DES_CBC_CRC: - case ENCTYPE_DES_CBC_MD5: - break; - default: - use = false; - break; - } - } - - if (!use) continue; - - key.mkvno = 0; - key.salt = NULL; - - if (pkb4->salt.string) { - DATA_BLOB salt; - - salt = data_blob_string_const(pkb4->salt.string); - - key.salt = calloc(1, sizeof(*key.salt)); - if (key.salt == NULL) { - ret = ENOMEM; - goto out; - } - - key.salt->type = hdb_pw_salt; - - ret = krb5_data_copy(&key.salt->salt, salt.data, salt.length); - if (ret) { - free(key.salt); - key.salt = NULL; - goto out; - } - } - - /* TODO: maybe pass the iteration_count somehow... */ - - ret = krb5_keyblock_init(context, - pkb4->keys[i].keytype, - pkb4->keys[i].value->data, - pkb4->keys[i].value->length, - &key.key); - if (ret) { - if (key.salt) { - free_Salt(key.salt); - free(key.salt); - key.salt = NULL; - } - goto out; - } - - entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key; - entry_ex->entry.keys.len++; - } - } else if (pkb3) { - for (i=0; i < pkb3->num_keys; i++) { - bool use = true; - Key key; - - if (!pkb3->keys[i].value) continue; - - if (userAccountControl & UF_USE_DES_KEY_ONLY) { - switch (pkb3->keys[i].keytype) { - case ENCTYPE_DES_CBC_CRC: - case ENCTYPE_DES_CBC_MD5: - break; - default: - use = false; - break; - } - } - - if (!use) continue; - - key.mkvno = 0; - key.salt = NULL; - - if (pkb3->salt.string) { - DATA_BLOB salt; - - salt = data_blob_string_const(pkb3->salt.string); - - key.salt = calloc(1, sizeof(*key.salt)); - if (key.salt == NULL) { - ret = ENOMEM; - goto out; - } - - key.salt->type = hdb_pw_salt; - - ret = krb5_data_copy(&key.salt->salt, salt.data, salt.length); - if (ret) { - free(key.salt); - key.salt = NULL; - goto out; - } - } - - ret = krb5_keyblock_init(context, - pkb3->keys[i].keytype, - pkb3->keys[i].value->data, - pkb3->keys[i].value->length, - &key.key); - if (ret) { - if (key.salt) { - free_Salt(key.salt); - free(key.salt); - key.salt = NULL; - } - goto out; - } - - entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key; - entry_ex->entry.keys.len++; - } - } - -out: - if (ret != 0) { - entry_ex->entry.keys.len = 0; - } - if (entry_ex->entry.keys.len == 0 && entry_ex->entry.keys.val) { - free(entry_ex->entry.keys.val); - entry_ex->entry.keys.val = NULL; - } - return ret; -} - -/* - * Construct an hdb_entry from a directory entry. - */ -static krb5_error_code LDB_message2entry(krb5_context context, HDB *db, - TALLOC_CTX *mem_ctx, krb5_const_principal principal, - enum hdb_ldb_ent_type ent_type, - struct ldb_message *msg, - struct ldb_message *realm_ref_msg, - hdb_entry_ex *entry_ex) -{ - unsigned int userAccountControl; - int i; - krb5_error_code ret = 0; - krb5_boolean is_computer = FALSE; - const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL); - char *realm = strupper_talloc(mem_ctx, dnsdomain); - struct loadparm_context *lp_ctx = ldb_get_opaque((struct ldb_context *)db->hdb_db, "loadparm"); - struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, - mem_ctx, - realm_ref_msg, - "nCName", - ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL)); - - struct hdb_ldb_private *private; - NTTIME acct_expiry; - - struct ldb_message_element *objectclasses; - struct ldb_val computer_val; - computer_val.data = discard_const_p(uint8_t,"computer"); - computer_val.length = strlen((const char *)computer_val.data); - - objectclasses = ldb_msg_find_element(msg, "objectClass"); - - if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) { - is_computer = TRUE; - } - - memset(entry_ex, 0, sizeof(*entry_ex)); - - if (!realm) { - krb5_set_error_string(context, "talloc_strdup: out of memory"); - ret = ENOMEM; - goto out; - } - - private = talloc(mem_ctx, struct hdb_ldb_private); - if (!private) { - ret = ENOMEM; - goto out; - } - - private->entry_ex = entry_ex; - private->iconv_convenience = lp_iconv_convenience(lp_ctx); - private->netbios_name = lp_netbios_name(lp_ctx); - - talloc_set_destructor(private, hdb_ldb_destructor); - - entry_ex->ctx = private; - entry_ex->free_entry = hdb_ldb_free_entry; - - userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0); - - - entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal))); - if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) { - const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL); - if (!samAccountName) { - krb5_set_error_string(context, "LDB_message2entry: no samAccountName present"); - ret = ENOENT; - goto out; - } - samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL); - krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL); - } else { - char *strdup_realm; - ret = copy_Principal(principal, entry_ex->entry.principal); - if (ret) { - krb5_clear_error_string(context); - goto out; - } - - /* While we have copied the client principal, tests - * show that Win2k3 returns the 'corrected' realm, not - * the client-specified realm. This code attempts to - * replace the client principal's realm with the one - * we determine from our records */ - - /* this has to be with malloc() */ - strdup_realm = strdup(realm); - if (!strdup_realm) { - ret = ENOMEM; - krb5_clear_error_string(context); - goto out; - } - free(*krb5_princ_realm(context, entry_ex->entry.principal)); - krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm); - } - - entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type); - - if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) { - entry_ex->entry.flags.invalid = 0; - entry_ex->entry.flags.server = 1; - entry_ex->entry.flags.forwardable = 1; - entry_ex->entry.flags.ok_as_delegate = 1; - } - - if (lp_parm_bool(lp_ctx, NULL, "kdc", "require spn for service", true)) { - if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) { - entry_ex->entry.flags.server = 0; - } - } - - /* use 'whenCreated' */ - entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0); - /* use '???' */ - entry_ex->entry.created_by.principal = NULL; - - entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event)); - if (entry_ex->entry.modified_by == NULL) { - krb5_set_error_string(context, "malloc: out of memory"); - ret = ENOMEM; - goto out; - } - - /* use 'whenChanged' */ - entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0); - /* use '???' */ - entry_ex->entry.modified_by->principal = NULL; - - entry_ex->entry.valid_start = NULL; - - acct_expiry = samdb_result_account_expires(msg); - if (acct_expiry == 0x7FFFFFFFFFFFFFFFULL) { - entry_ex->entry.valid_end = NULL; - } else { - entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end)); - if (entry_ex->entry.valid_end == NULL) { - ret = ENOMEM; - goto out; - } - *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry); - } - - if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) { - NTTIME must_change_time - = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx, - domain_dn, msg); - if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) { - entry_ex->entry.pw_end = NULL; - } else { - entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end)); - if (entry_ex->entry.pw_end == NULL) { - ret = ENOMEM; - goto out; - } - *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time); - } - } else { - entry_ex->entry.pw_end = NULL; - } - - entry_ex->entry.max_life = NULL; - - entry_ex->entry.max_renew = NULL; - - entry_ex->entry.generation = NULL; - - /* Get keys from the db */ - ret = LDB_message2entry_keys(context, private->iconv_convenience, private, msg, userAccountControl, entry_ex); - if (ret) { - /* Could be bougus data in the entry, or out of memory */ - goto out; - } - - entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes))); - if (entry_ex->entry.etypes == NULL) { - krb5_clear_error_string(context); - ret = ENOMEM; - goto out; - } - entry_ex->entry.etypes->len = entry_ex->entry.keys.len; - entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int)); - if (entry_ex->entry.etypes->val == NULL) { - krb5_clear_error_string(context); - ret = ENOMEM; - goto out; - } - for (i=0; i < entry_ex->entry.etypes->len; i++) { - entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype; - } - - - private->msg = talloc_steal(private, msg); - private->realm_ref_msg = talloc_steal(private, realm_ref_msg); - private->samdb = (struct ldb_context *)db->hdb_db; - -out: - if (ret != 0) { - /* This doesn't free ent itself, that is for the eventual caller to do */ - hdb_free_entry(context, entry_ex); - } else { - talloc_steal(db, entry_ex->ctx); - } - - return ret; -} - -/* - * Construct an hdb_entry from a directory entry. - */ -static krb5_error_code LDB_trust_message2entry(krb5_context context, HDB *db, - struct loadparm_context *lp_ctx, - TALLOC_CTX *mem_ctx, krb5_const_principal principal, - enum trust_direction direction, - struct ldb_message *msg, - hdb_entry_ex *entry_ex) -{ - - const char *dnsdomain; - char *realm; - char *strdup_realm; - DATA_BLOB password_utf16; - struct samr_Password password_hash; - const struct ldb_val *password_val; - struct trustAuthInOutBlob password_blob; - struct hdb_ldb_private *private; - - enum ndr_err_code ndr_err; - int i, ret, trust_direction_flags; - - private = talloc(mem_ctx, struct hdb_ldb_private); - if (!private) { - ret = ENOMEM; - goto out; - } - - private->entry_ex = entry_ex; - private->iconv_convenience = lp_iconv_convenience(lp_ctx); - private->netbios_name = lp_netbios_name(lp_ctx); - - talloc_set_destructor(private, hdb_ldb_destructor); - - entry_ex->ctx = private; - entry_ex->free_entry = hdb_ldb_free_entry; - - /* use 'whenCreated' */ - entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0); - /* use '???' */ - entry_ex->entry.created_by.principal = NULL; - - entry_ex->entry.valid_start = NULL; - - trust_direction_flags = ldb_msg_find_attr_as_int(msg, "trustDirection", 0); - - if (direction == INBOUND) { - realm = strupper_talloc(mem_ctx, lp_realm(lp_ctx)); - password_val = ldb_msg_find_ldb_val(msg, "trustAuthIncoming"); - - } else { /* OUTBOUND */ - dnsdomain = ldb_msg_find_attr_as_string(msg, "trustPartner", NULL); - realm = strupper_talloc(mem_ctx, dnsdomain); - password_val = ldb_msg_find_ldb_val(msg, "trustAuthOutgoing"); - } - - if (!password_val || !(trust_direction_flags & direction)) { - ret = ENOENT; - goto out; - } - - ndr_err = ndr_pull_struct_blob_all(password_val, mem_ctx, private->iconv_convenience, &password_blob, - (ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - ret = EINVAL; - goto out; - } - - for (i=0; i < password_blob.count; i++) { - if (password_blob.current->array[i].AuthType == TRUST_AUTH_TYPE_CLEAR) { - password_utf16 = data_blob_const(password_blob.current->array[i].AuthInfo.clear.password, - password_blob.current->array[i].AuthInfo.clear.size); - /* In the future, generate all sorts of - * hashes, but for now we can't safely convert - * the random strings windows uses into - * utf8 */ - - /* but as it is utf16 already, we can get the NT password/arcfour-hmac-md5 key */ - mdfour(password_hash.hash, password_utf16.data, password_utf16.length); - break; - } else if (password_blob.current->array[i].AuthType == TRUST_AUTH_TYPE_NT4OWF) { - password_hash = password_blob.current->array[i].AuthInfo.nt4owf.password; - break; - } - } - entry_ex->entry.keys.len = 0; - entry_ex->entry.keys.val = NULL; - - if (i < password_blob.count) { - Key key; - /* Must have found a cleartext or MD4 password */ - entry_ex->entry.keys.val = calloc(1, sizeof(Key)); - - key.mkvno = 0; - key.salt = NULL; /* No salt for this enc type */ - - if (entry_ex->entry.keys.val == NULL) { - ret = ENOMEM; - goto out; - } - - ret = krb5_keyblock_init(context, - ENCTYPE_ARCFOUR_HMAC_MD5, - password_hash.hash, sizeof(password_hash.hash), - &key.key); - - entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key; - entry_ex->entry.keys.len++; - } - - ret = copy_Principal(principal, entry_ex->entry.principal); - if (ret) { - krb5_clear_error_string(context); - goto out; - } - - /* While we have copied the client principal, tests - * show that Win2k3 returns the 'corrected' realm, not - * the client-specified realm. This code attempts to - * replace the client principal's realm with the one - * we determine from our records */ - - /* this has to be with malloc() */ - strdup_realm = strdup(realm); - if (!strdup_realm) { - ret = ENOMEM; - krb5_clear_error_string(context); - goto out; - } - free(*krb5_princ_realm(context, entry_ex->entry.principal)); - krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm); - - entry_ex->entry.flags = int2HDBFlags(0); - entry_ex->entry.flags.immutable = 1; - entry_ex->entry.flags.invalid = 0; - entry_ex->entry.flags.server = 1; - entry_ex->entry.flags.require_preauth = 1; - - entry_ex->entry.pw_end = NULL; - - entry_ex->entry.max_life = NULL; - - entry_ex->entry.max_renew = NULL; - - entry_ex->entry.generation = NULL; - - entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes))); - if (entry_ex->entry.etypes == NULL) { - krb5_clear_error_string(context); - ret = ENOMEM; - goto out; - } - entry_ex->entry.etypes->len = entry_ex->entry.keys.len; - entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int)); - if (entry_ex->entry.etypes->val == NULL) { - krb5_clear_error_string(context); - ret = ENOMEM; - goto out; - } - for (i=0; i < entry_ex->entry.etypes->len; i++) { - entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype; - } - - - private->msg = talloc_steal(private, msg); - private->realm_ref_msg = NULL; - private->samdb = (struct ldb_context *)db->hdb_db; - -out: - if (ret != 0) { - /* This doesn't free ent itself, that is for the eventual caller to do */ - hdb_free_entry(context, entry_ex); - } else { - talloc_steal(db, entry_ex->ctx); - } - - return ret; - -} - -static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx, - TALLOC_CTX *mem_ctx, - krb5_const_principal principal, - enum hdb_ldb_ent_type ent_type, - struct ldb_dn *realm_dn, - struct ldb_message ***pmsg) -{ - krb5_error_code ret; - int lret; - char *filter = NULL; - const char * const *princ_attrs = user_attrs; - - char *short_princ; - char *short_princ_talloc; - - struct ldb_result *res = NULL; - - ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ); - - if (ret != 0) { - krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal"); - krb5_warnx(context, "LDB_lookup_principal: could not parse principal"); - return ret; - } - - short_princ_talloc = talloc_strdup(mem_ctx, short_princ); - free(short_princ); - if (!short_princ_talloc) { - krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!"); - return ENOMEM; - } - - switch (ent_type) { - case HDB_LDB_ENT_TYPE_CLIENT: - case HDB_LDB_ENT_TYPE_TRUST: - case HDB_LDB_ENT_TYPE_ANY: - /* Can't happen */ - return EINVAL; - case HDB_LDB_ENT_TYPE_KRBTGT: - filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))", - KRB5_TGS_NAME); - break; - case HDB_LDB_ENT_TYPE_SERVER: - filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))", - short_princ_talloc); - break; - } - - if (!filter) { - krb5_set_error_string(context, "talloc_asprintf: out of memory"); - return ENOMEM; - } - - lret = ldb_search(ldb_ctx, mem_ctx, &res, realm_dn, - LDB_SCOPE_SUBTREE, princ_attrs, "%s", filter); - if (lret != LDB_SUCCESS) { - DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx))); - return HDB_ERR_NOENTRY; - } else if (res->count == 0 || res->count > 1) { - DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count)); - talloc_free(res); - return HDB_ERR_NOENTRY; - } - talloc_steal(mem_ctx, res->msgs); - *pmsg = res->msgs; - talloc_free(res); - return 0; -} - -static krb5_error_code LDB_lookup_trust(krb5_context context, struct ldb_context *ldb_ctx, - TALLOC_CTX *mem_ctx, - const char *realm, - struct ldb_dn *realm_dn, - struct ldb_message ***pmsg) -{ - int lret; - char *filter = NULL; - const char * const *attrs = trust_attrs; - - struct ldb_result *res = NULL; - filter = talloc_asprintf(mem_ctx, "(&(objectClass=trustedDomain)(|(flatname=%s)(trustPartner=%s)))", realm, realm); - - if (!filter) { - krb5_set_error_string(context, "talloc_asprintf: out of memory"); - return ENOMEM; - } - - lret = ldb_search(ldb_ctx, mem_ctx, &res, - ldb_get_default_basedn(ldb_ctx), - LDB_SCOPE_SUBTREE, attrs, "%s", filter); - if (lret != LDB_SUCCESS) { - DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx))); - return HDB_ERR_NOENTRY; - } else if (res->count == 0 || res->count > 1) { - DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count)); - talloc_free(res); - return HDB_ERR_NOENTRY; - } - talloc_steal(mem_ctx, res->msgs); - *pmsg = res->msgs; - talloc_free(res); - return 0; -} - -static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx, - TALLOC_CTX *mem_ctx, - const char *realm, - struct ldb_message ***pmsg) -{ - int ret; - struct ldb_result *cross_ref_res; - struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx); - - ret = ldb_search(ldb_ctx, mem_ctx, &cross_ref_res, - partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs, - "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))", - realm, realm); - - if (ret != LDB_SUCCESS) { - DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx))); - talloc_free(cross_ref_res); - return HDB_ERR_NOENTRY; - } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) { - DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count)); - talloc_free(cross_ref_res); - return HDB_ERR_NOENTRY; - } - - if (pmsg) { - *pmsg = cross_ref_res->msgs; - talloc_steal(mem_ctx, cross_ref_res->msgs); - } - talloc_free(cross_ref_res); - - return 0; -} - - -static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode) -{ - if (db->hdb_master_key_set) { - krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n"); - krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n"); - return HDB_ERR_NOENTRY; - } - - return 0; -} - -static krb5_error_code LDB_close(krb5_context context, HDB *db) -{ - return 0; -} - -static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation) -{ - return 0; -} - -static krb5_error_code LDB_unlock(krb5_context context, HDB *db) -{ - return 0; -} - -static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name) -{ - return HDB_ERR_DB_INUSE; -} - -static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db, - TALLOC_CTX *mem_ctx, - krb5_const_principal principal, - unsigned flags, - hdb_entry_ex *entry_ex) { - NTSTATUS nt_status; - char *principal_string; - krb5_error_code ret; - struct ldb_message **msg = NULL; - struct ldb_message **realm_ref_msg = NULL; - - ret = krb5_unparse_name(context, principal, &principal_string); - - if (ret != 0) { - return ret; - } - - nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db, - mem_ctx, principal_string, - &msg, &realm_ref_msg); - free(principal_string); - if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) { - return HDB_ERR_NOENTRY; - } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) { - return ENOMEM; - } else if (!NT_STATUS_IS_OK(nt_status)) { - return EINVAL; - } - - ret = LDB_message2entry(context, db, mem_ctx, - principal, HDB_LDB_ENT_TYPE_CLIENT, - msg[0], realm_ref_msg[0], entry_ex); - return ret; -} - -static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db, - TALLOC_CTX *mem_ctx, - krb5_const_principal principal, - unsigned flags, - hdb_entry_ex *entry_ex) -{ - krb5_error_code ret; - struct ldb_message **msg = NULL; - struct ldb_message **realm_ref_msg_1 = NULL; - struct ldb_message **realm_ref_msg_2 = NULL; - struct ldb_dn *realm_dn; - const char *realm; - - krb5_principal alloc_principal = NULL; - if (principal->name.name_string.len != 2 - || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) { - /* Not a krbtgt */ - return HDB_ERR_NOENTRY; - } - - /* krbtgt case. Either us or a trusted realm */ - - if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db, - mem_ctx, principal->realm, &realm_ref_msg_1) == 0) - && (LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db, - mem_ctx, principal->name.name_string.val[1], &realm_ref_msg_2) == 0) - && (ldb_dn_compare(realm_ref_msg_1[0]->dn, realm_ref_msg_1[0]->dn) == 0)) { - /* us */ - /* Cludge, cludge cludge. If the realm part of krbtgt/realm, - * is in our db, then direct the caller at our primary - * krbtgt */ - - const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg_1[0], "dnsRoot", NULL); - char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain); - if (!realm_fixed) { - krb5_set_error_string(context, "strupper_talloc: out of memory"); - return ENOMEM; - } - - ret = krb5_copy_principal(context, principal, &alloc_principal); - if (ret) { - return ret; - } - - free(alloc_principal->name.name_string.val[1]); - alloc_principal->name.name_string.val[1] = strdup(realm_fixed); - talloc_free(realm_fixed); - if (!alloc_principal->name.name_string.val[1]) { - krb5_set_error_string(context, "LDB_fetch: strdup() failed!"); - return ENOMEM; - } - principal = alloc_principal; - realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg_1[0], "nCName", NULL); - - ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db, - mem_ctx, - principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg); - - if (ret != 0) { - krb5_warnx(context, "LDB_fetch: could not find principal in DB"); - krb5_set_error_string(context, "LDB_fetch: could not find principal in DB"); - return ret; - } - - ret = LDB_message2entry(context, db, mem_ctx, - principal, HDB_LDB_ENT_TYPE_KRBTGT, - msg[0], realm_ref_msg_1[0], entry_ex); - if (ret != 0) { - krb5_warnx(context, "LDB_fetch: message2entry failed"); - } - return ret; - - } else { - enum trust_direction direction = UNKNOWN; - - struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(db->hdb_db, "loadparm"), struct loadparm_context); - /* Either an inbound or outbound trust */ - - if (strcasecmp(lp_realm(lp_ctx), principal->realm) == 0) { - /* look for inbound trust */ - direction = INBOUND; - realm = principal->name.name_string.val[1]; - } - - if (strcasecmp(lp_realm(lp_ctx), principal->name.name_string.val[1]) == 0) { - /* look for outbound trust */ - direction = OUTBOUND; - realm = principal->realm; - } - - /* Trusted domains are under CN=system */ - - ret = LDB_lookup_trust(context, (struct ldb_context *)db->hdb_db, - mem_ctx, - realm, realm_dn, &msg); - - if (ret != 0) { - krb5_warnx(context, "LDB_fetch: could not find principal in DB"); - krb5_set_error_string(context, "LDB_fetch: could not find principal in DB"); - return ret; - } - - ret = LDB_trust_message2entry(context, db, lp_ctx, mem_ctx, - principal, direction, - msg[0], entry_ex); - if (ret != 0) { - krb5_warnx(context, "LDB_fetch: message2entry failed"); - } - return ret; - - - /* we should lookup trusted domains */ - return HDB_ERR_NOENTRY; - } - -} - -static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db, - TALLOC_CTX *mem_ctx, - krb5_const_principal principal, - unsigned flags, - hdb_entry_ex *entry_ex) -{ - krb5_error_code ret; - const char *realm; - struct ldb_message **msg = NULL; - struct ldb_message **realm_ref_msg = NULL; - struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx); - if (principal->name.name_string.len >= 2) { - /* 'normal server' case */ - int ldb_ret; - NTSTATUS nt_status; - struct ldb_dn *user_dn, *domain_dn; - char *principal_string; - - ret = krb5_unparse_name_flags(context, principal, - KRB5_PRINCIPAL_UNPARSE_NO_REALM, - &principal_string); - if (ret != 0) { - return ret; - } - - /* At this point we may find the host is known to be - * in a different realm, so we should generate a - * referral instead */ - nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db, - mem_ctx, principal_string, - &user_dn, &domain_dn); - free(principal_string); - - if (!NT_STATUS_IS_OK(nt_status)) { - return HDB_ERR_NOENTRY; - } - - ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db, - mem_ctx, user_dn, &msg, user_attrs); - - if (ldb_ret != 1) { - return HDB_ERR_NOENTRY; - } - - ldb_ret = gendb_search((struct ldb_context *)db->hdb_db, - mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs, - "ncName=%s", ldb_dn_get_linearized(domain_dn)); - - if (ldb_ret != 1) { - return HDB_ERR_NOENTRY; - } - - } else { - struct ldb_dn *realm_dn; - /* server as client principal case, but we must not lookup userPrincipalNames */ - - realm = krb5_principal_get_realm(context, principal); - - ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db, - mem_ctx, realm, &realm_ref_msg); - if (ret != 0) { - return HDB_ERR_NOENTRY; - } - - realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL); - - ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db, - mem_ctx, - principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg); - - if (ret != 0) { - return ret; - } - } - - ret = LDB_message2entry(context, db, mem_ctx, - principal, HDB_LDB_ENT_TYPE_SERVER, - msg[0], realm_ref_msg[0], entry_ex); - if (ret != 0) { - krb5_warnx(context, "LDB_fetch: message2entry failed"); - } - - return ret; -} - -static krb5_error_code LDB_fetch(krb5_context context, HDB *db, - krb5_const_principal principal, - unsigned flags, - hdb_entry_ex *entry_ex) -{ - krb5_error_code ret = HDB_ERR_NOENTRY; - - TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context"); - - if (!mem_ctx) { - krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!"); - return ENOMEM; - } - - if (flags & HDB_F_GET_CLIENT) { - ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex); - if (ret != HDB_ERR_NOENTRY) goto done; - } - if (flags & HDB_F_GET_SERVER) { - /* krbtgt fits into this situation for trusted realms, and for resolving different versions of our own realm name */ - ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex); - if (ret != HDB_ERR_NOENTRY) goto done; - - /* We return 'no entry' if it does not start with krbtgt/, so move to the common case quickly */ - ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex); - if (ret != HDB_ERR_NOENTRY) goto done; - } - if (flags & HDB_F_GET_KRBTGT) { - ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex); - if (ret != HDB_ERR_NOENTRY) goto done; - } - -done: - talloc_free(mem_ctx); - return ret; -} - -static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry) -{ - return HDB_ERR_DB_INUSE; -} - -static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal) -{ - return HDB_ERR_DB_INUSE; -} - -struct hdb_ldb_seq { - struct ldb_context *ctx; - int index; - int count; - struct ldb_message **msgs; - struct ldb_message **realm_ref_msgs; -}; - -static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry) -{ - krb5_error_code ret; - struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc; - TALLOC_CTX *mem_ctx; - hdb_entry_ex entry_ex; - memset(&entry_ex, '\0', sizeof(entry_ex)); - - if (!priv) { - return HDB_ERR_NOENTRY; - } - - mem_ctx = talloc_named(priv, 0, "LDB_seq context"); - - if (!mem_ctx) { - krb5_set_error_string(context, "LDB_seq: talloc_named() failed!"); - return ENOMEM; - } - - if (priv->index < priv->count) { - ret = LDB_message2entry(context, db, mem_ctx, - NULL, HDB_LDB_ENT_TYPE_ANY, - priv->msgs[priv->index++], - priv->realm_ref_msgs[0], entry); - } else { - ret = HDB_ERR_NOENTRY; - } - - if (ret != 0) { - talloc_free(priv); - db->hdb_dbc = NULL; - } else { - talloc_free(mem_ctx); - } - - return ret; -} - -static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags, - hdb_entry_ex *entry) -{ - struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db; - struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc; - char *realm; - struct ldb_dn *realm_dn = NULL; - struct ldb_result *res = NULL; - struct ldb_message **realm_ref_msgs = NULL; - krb5_error_code ret; - TALLOC_CTX *mem_ctx; - int lret; - - if (priv) { - talloc_free(priv); - db->hdb_dbc = NULL; - } - - priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq); - if (!priv) { - krb5_set_error_string(context, "talloc: out of memory"); - return ENOMEM; - } - - priv->ctx = ldb_ctx; - priv->index = 0; - priv->msgs = NULL; - priv->realm_ref_msgs = NULL; - priv->count = 0; - - mem_ctx = talloc_named(priv, 0, "LDB_firstkey context"); - - if (!mem_ctx) { - krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!"); - return ENOMEM; - } - - ret = krb5_get_default_realm(context, &realm); - if (ret != 0) { - talloc_free(priv); - return ret; - } - - ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db, - mem_ctx, realm, &realm_ref_msgs); - - free(realm); - - if (ret != 0) { - talloc_free(priv); - krb5_warnx(context, "LDB_firstkey: could not find realm\n"); - return HDB_ERR_NOENTRY; - } - - realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL); - - priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs); - - lret = ldb_search(ldb_ctx, priv, &res, - realm_dn, LDB_SCOPE_SUBTREE, user_attrs, - "(objectClass=user)"); - - if (lret != LDB_SUCCESS) { - talloc_free(priv); - return HDB_ERR_NOENTRY; - } - - priv->count = res->count; - priv->msgs = talloc_steal(priv, res->msgs); - talloc_free(res); - - db->hdb_dbc = priv; - - ret = LDB_seq(context, db, flags, entry); - - if (ret != 0) { - talloc_free(priv); - db->hdb_dbc = NULL; - } else { - talloc_free(mem_ctx); - } - return ret; -} - -static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags, - hdb_entry_ex *entry) -{ - return LDB_seq(context, db, flags, entry); -} - -static krb5_error_code LDB_destroy(krb5_context context, HDB *db) -{ - talloc_free(db); - return 0; -} - -/* This interface is to be called by the KDC, which is expecting Samba - * calling conventions. It is also called by a wrapper - * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb - * code */ - -NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx, - struct event_context *ev_ctx, - struct loadparm_context *lp_ctx, - krb5_context context, struct HDB **db, const char *arg) -{ - NTSTATUS nt_status; - struct auth_session_info *session_info; - *db = talloc(mem_ctx, HDB); - if (!*db) { - krb5_set_error_string(context, "malloc: out of memory"); - return NT_STATUS_NO_MEMORY; - } - - (*db)->hdb_master_key_set = 0; - (*db)->hdb_db = NULL; - - nt_status = auth_system_session_info(*db, lp_ctx, &session_info); - if (!NT_STATUS_IS_OK(nt_status)) { - return nt_status; - } - - /* The idea here is very simple. Using Kerberos to - * authenticate the KDC to the LDAP server is higly likely to - * be circular. - * - * In future we may set this up to use EXERNAL and SSL - * certificates, for now it will almost certainly be NTLMSSP - */ - - cli_credentials_set_kerberos_state(session_info->credentials, - CRED_DONT_USE_KERBEROS); - - /* Setup the link to LDB */ - (*db)->hdb_db = samdb_connect(*db, ev_ctx, lp_ctx, session_info); - if ((*db)->hdb_db == NULL) { - DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!")); - return NT_STATUS_CANT_ACCESS_DOMAIN_INFO; - } - - (*db)->hdb_dbc = NULL; - (*db)->hdb_open = LDB_open; - (*db)->hdb_close = LDB_close; - (*db)->hdb_fetch = LDB_fetch; - (*db)->hdb_store = LDB_store; - (*db)->hdb_remove = LDB_remove; - (*db)->hdb_firstkey = LDB_firstkey; - (*db)->hdb_nextkey = LDB_nextkey; - (*db)->hdb_lock = LDB_lock; - (*db)->hdb_unlock = LDB_unlock; - (*db)->hdb_rename = LDB_rename; - /* we don't implement these, as we are not a lockable database */ - (*db)->hdb__get = NULL; - (*db)->hdb__put = NULL; - /* kadmin should not be used for deletes - use other tools instead */ - (*db)->hdb__del = NULL; - (*db)->hdb_destroy = LDB_destroy; - - return NT_STATUS_OK; -} - -krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg) -{ - NTSTATUS nt_status; - /* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */ - nt_status = kdc_hdb_ldb_create(kdc_mem_ctx, event_context_find(kdc_mem_ctx), kdc_lp_ctx, - context, db, arg); - - if (NT_STATUS_IS_OK(nt_status)) { - return 0; - } - return EINVAL; -} |