--- /dev/null
+/*
+ * 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 "kdc.h"
+#include "ads.h"
+#include <hdb.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include <ldb.h>
+#include <talloc.h>
+
+#include <ctype.h>
+
+
+static const char * const krb5_attrs[] = {
+ "objectClass",
+ "cn",
+ "name",
+ "sAMAccountName",
+
+ "userPrincipalName",
+ "servicePrincipalName",
+
+ "userAccountControl",
+ "sAMAccountType",
+
+ "objectSid",
+ "primaryGroupID",
+ "memberOf",
+
+ "unicodePWD",
+ "lmPwdHash",
+ "ntPwdHash",
+
+ "badPwdCount",
+ "badPasswordTime",
+ "lastLogoff",
+ "lastLogon",
+ "pwdLastSet",
+ "accountExpires",
+ "logonCount",
+
+ "objectGUID",
+ "whenCreated",
+ "whenChanged",
+ "uSNCreated",
+ "uSNChanged",
+ "msDS-KeyVersionNumber",
+ 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_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_ent_type ent_type)
+{
+ HDBFlags flags = int2HDBFlags(0);
+
+ krb5_warnx(context, "uf2HDBFlags: userAccountControl: %08x\n", userAccountControl);
+
+ /* we don't allow kadmin deletes */
+ flags.immutable = 1;
+
+ /* mark the principal as invalid to start with */
+ flags.invalid = 1;
+
+ /* Account types - clear the invalid bit if it turns out to be valid */
+ if (userAccountControl & UF_NORMAL_ACCOUNT) {
+ if (ent_type == HDB_ENT_TYPE_CLIENT || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.client = 1;
+ }
+ flags.invalid = 0;
+ }
+
+ if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
+ if (ent_type == HDB_ENT_TYPE_CLIENT || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.client = 1;
+ }
+ flags.invalid = 0;
+ }
+ if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
+ if (ent_type == HDB_ENT_TYPE_CLIENT || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.client = 1;
+ }
+ if (ent_type == HDB_ENT_TYPE_SERVER || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.server = 1;
+ }
+ flags.invalid = 0;
+ }
+ if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
+ if (ent_type == HDB_ENT_TYPE_CLIENT || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.client = 1;
+ }
+ if (ent_type == HDB_ENT_TYPE_SERVER || ent_type == HDB_ENT_TYPE_ENUM) {
+ flags.server = 1;
+ }
+ flags.invalid = 0;
+ }
+
+ if (userAccountControl & UF_ACCOUNTDISABLE) {
+ flags.invalid = 1;
+ }
+ if (userAccountControl & UF_LOCKOUT) {
+ flags.invalid = 1;
+ }
+/*
+ if (userAccountControl & UF_PASSWORD_NOTREQD) {
+ flags.invalid = 1;
+ }
+*/
+/*
+ if (userAccountControl & UF_PASSWORD_CANT_CHANGE) {
+ flags.invalid = 1;
+ }
+*/
+/*
+ if (userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED) {
+ flags.invalid = 1;
+ }
+*/
+ if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
+ flags.invalid = 1;
+ }
+
+/* UF_DONT_EXPIRE_PASSWD handled in LDB_message2entry() */
+
+/*
+ if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
+ flags.invalid = 1;
+ }
+*/
+ if (userAccountControl & UF_SMARTCARD_REQUIRED) {
+ flags.require_hwauth = 1;
+ }
+ if (flags.server && (userAccountControl & UF_TRUSTED_FOR_DELEGATION)) {
+ flags.forwardable = 1;
+ flags.proxiable = 1;
+ } else if (flags.client && (userAccountControl & UF_NOT_DELEGATED)) {
+ flags.forwardable = 0;
+ flags.proxiable = 0;
+ } else {
+ flags.forwardable = 1;
+ flags.proxiable = 1;
+ }
+
+/*
+ if (userAccountControl & UF_SMARTCARD_USE_DES_KEY_ONLY) {
+ flags.invalid = 1;
+ }
+*/
+ if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
+ flags.require_preauth = 0;
+ } else {
+ flags.require_preauth = 1;
+
+ }
+
+ krb5_warnx(context, "uf2HDBFlags: HDBFlags: %08x\n", HDBFlags2int(flags));
+
+ return flags;
+}
+
+/*
+ * 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_ent_type ent_type, struct ldb_message *realm_msg,
+ struct ldb_message *msg,
+ hdb_entry *ent)
+{
+ const char *unicodePwd;
+ int userAccountControl;
+ int i;
+ krb5_error_code ret = 0;
+ const char *dnsdomain = ldb_msg_find_string(realm_msg, "dnsDomain", NULL);
+ char *realm = talloc_strdup(mem_ctx, dnsdomain);
+
+ if (!realm) {
+ krb5_set_error_string(context, "talloc_strdup: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ /* TODO: Use Samba charset functions */
+ for (i=0; i< strlen(realm); i++) {
+ realm[i] = toupper(realm[i]);
+ }
+
+ krb5_warnx(context, "LDB_message2entry:\n");
+
+ memset(ent, 0, sizeof(*ent));
+
+ userAccountControl = ldb_msg_find_int(msg, "userAccountControl", 0);
+
+ ent->principal = malloc(sizeof(*(ent->principal)));
+ if (ent_type == HDB_ENT_TYPE_ENUM && principal == NULL) {
+ const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
+ if (!samAccountName) {
+ krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
+ ret = ENOENT;
+ goto out;
+ }
+ samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
+ krb5_make_principal(context, &ent->principal, realm, samAccountName, NULL);
+ } else {
+ char *strdup_realm;
+ ret = copy_Principal(principal, ent->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 */
+
+ /* don't leak */
+ free(*krb5_princ_realm(context, ent->principal));
+
+ /* this has to be with malloc() */
+ strdup_realm = strdup(realm);
+ if (!strdup_realm) {
+ ret = ENOMEM;
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ krb5_princ_set_realm(context, ent->principal, &strdup_realm);
+ }
+
+ ent->kvno = ldb_msg_find_int(msg, "msDS-KeyVersionNumber", 0);
+
+ ent->flags = uf2HDBFlags(context, userAccountControl, ent_type);
+
+ if (ent_type == HDB_ENT_TYPE_KRBTGT) {
+ ent->flags.invalid = 0;
+ ent->flags.server = 1;
+ }
+
+ /* use 'whenCreated' */
+ ent->created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
+ /* use '???' */
+ ent->created_by.principal = NULL;
+
+ ent->modified_by = (Event *) malloc(sizeof(Event));
+ if (ent->modified_by == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ /* use 'whenChanged' */
+ ent->modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
+ /* use '???' */
+ ent->modified_by->principal = NULL;
+
+ ent->valid_start = NULL;
+
+ ent->valid_end = NULL;
+ ent->pw_end = NULL;
+
+ ent->max_life = NULL;
+
+ ent->max_renew = NULL;
+
+ ent->generation = NULL;
+
+ /* create the keys and enctypes */
+ unicodePwd = ldb_msg_find_string(msg, "unicodePwd", NULL);
+ if (unicodePwd) {
+ /* Many, many thanks to lukeh@padl.com for this
+ * algorithm, described in his Nov 10 2004 mail to
+ * samba-technical@samba.org */
+
+ Principal *salt_principal;
+ const char *user_principal_name = ldb_msg_find_string(msg, "userPrincipalName", NULL);
+ struct ldb_message_element *objectclasses;
+ struct ldb_val computer_val;
+ computer_val.data = "computer";
+ computer_val.length = strlen(computer_val.data);
+
+ objectclasses = ldb_msg_find_element(msg, "objectClass");
+
+ if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
+ /* Determine a salting principal */
+ char *samAccountName = talloc_strdup(mem_ctx, ldb_msg_find_string(msg, "samAccountName", NULL));
+ char *saltbody;
+ if (!samAccountName) {
+ krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
+ ret = ENOENT;
+ goto out;
+ }
+ if (samAccountName[strlen(samAccountName)-1] == '$') {
+ samAccountName[strlen(samAccountName)-1] = '\0';
+ }
+ saltbody = talloc_asprintf(mem_ctx, "%s.%s", samAccountName, dnsdomain);
+
+ ret = krb5_make_principal(context, &salt_principal, realm, "host", saltbody, NULL);
+ } else if (user_principal_name) {
+ char *p;
+ user_principal_name = talloc_strdup(mem_ctx, user_principal_name);
+ if (!user_principal_name) {
+ ret = ENOMEM;
+ goto out;
+ } else {
+ p = strchr(user_principal_name, '@');
+ if (p) {
+ p[0] = '\0';
+ }
+ ret = krb5_make_principal(context, &salt_principal, realm, user_principal_name, NULL);
+ }
+ } else {
+ const char *samAccountName = ldb_msg_find_string(msg, "samAccountName", NULL);
+ ret = krb5_make_principal(context, &salt_principal, realm, samAccountName, NULL);
+ }
+
+ if (ret == 0) {
+ /*
+ * create keys from unicodePwd
+ */
+ ret = hdb_generate_key_set_password(context, salt_principal,
+ unicodePwd,
+ &ent->keys.val, &ent->keys.len);
+ krb5_free_principal(context, salt_principal);
+ }
+
+ if (ret != 0) {
+ krb5_warnx(context, "could not generate keys from unicodePwd\n");
+ ent->keys.val = NULL;
+ ent->keys.len = 0;
+ goto out;
+ }
+ } else {
+ const struct ldb_val *val;
+ krb5_data keyvalue;
+
+ val = ldb_msg_find_ldb_val(msg, "ntPwdHash");
+ if (!val) {
+ krb5_warnx(context, "neither type of key available for this account\n");
+ ent->keys.val = NULL;
+ ent->keys.len = 0;
+ } else if (val->length < 16) {
+ ent->keys.val = NULL;
+ ent->keys.len = 0;
+ krb5_warnx(context, "ntPwdHash has invalid length: %d\n",val->length);
+ } else {
+ ret = krb5_data_alloc (&keyvalue, 16);
+ if (ret) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ memcpy(keyvalue.data, val->data, 16);
+
+ ent->keys.val = malloc(sizeof(ent->keys.val[0]));
+ if (ent->keys.val == NULL) {
+ krb5_data_free(&keyvalue);
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ memset(&ent->keys.val[0], 0, sizeof(Key));
+ ent->keys.val[0].key.keytype = ETYPE_ARCFOUR_HMAC_MD5;
+ ent->keys.val[0].key.keyvalue = keyvalue;
+
+ ent->keys.len = 1;
+ }
+ }
+
+
+ ent->etypes = malloc(sizeof(*(ent->etypes)));
+ if (ent->etypes == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+ ent->etypes->len = ent->keys.len;
+ ent->etypes->val = calloc(ent->etypes->len, sizeof(int));
+ if (ent->etypes->val == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+ for (i=0; i < ent->etypes->len; i++) {
+ ent->etypes->val[i] = ent->keys.val[i].key.keytype;
+ }
+
+out:
+ if (ret != 0) {
+ /* I don't think this frees ent itself. */
+ hdb_free_entry(context, ent);
+ }
+
+ 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_ent_type ent_type,
+ const char *realm_dn,
+ struct ldb_message ***pmsg)
+{
+ krb5_error_code ret;
+ int count;
+ char *filter = NULL;
+ const char * const *princ_attrs = krb5_attrs;
+ char *p;
+
+ char *princ_str;
+ char *princ_str_talloc;
+ char *short_princ;
+
+ struct ldb_message **msg;
+
+ ret = krb5_unparse_name(context, principal, &princ_str);
+
+ 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;
+ }
+
+ princ_str_talloc = talloc_strdup(mem_ctx, princ_str);
+ short_princ = talloc_strdup(mem_ctx, princ_str);
+ free(princ_str);
+ if (!short_princ || !princ_str_talloc) {
+ krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
+ return ENOMEM;
+ }
+
+ p = strchr(short_princ, '@');
+ if (p) {
+ p[0] = '\0';
+ }
+
+
+ switch (ent_type) {
+ case HDB_ENT_TYPE_KRBTGT:
+ filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
+ KRB5_TGS_NAME);
+ break;
+ case HDB_ENT_TYPE_CLIENT:
+ filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(|(samAccountName=%s)(userPrincipalName=%s)))",
+ short_princ, princ_str_talloc);
+ break;
+ case HDB_ENT_TYPE_SERVER:
+ filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(|(samAccountName=%s)(servicePrincipalName=%s)))",
+ short_princ, short_princ);
+ break;
+ case HDB_ENT_TYPE_ENUM:
+ filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(|(|(samAccountName=%s)(servicePrincipalName=%s))(userPrincipalName=%s)))",
+ short_princ, short_princ, princ_str_talloc);
+ break;
+ }
+
+ if (!filter) {
+ krb5_set_error_string(context, "talloc_asprintf: out of memory");
+ return ENOMEM;
+ }
+
+ count = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter,
+ princ_attrs, &msg);
+
+ *pmsg = talloc_steal(mem_ctx, msg);
+ if (count < 1) {
+ krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' failed: %d",
+ realm_dn, filter, count);
+ krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' failed: %d",
+ realm_dn, filter, count);
+ return HDB_ERR_NOENTRY;
+ } else if (count > 1) {
+ krb5_warnx(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
+ realm_dn, filter, count);
+ krb5_set_error_string(context, "ldb_search: basedn: '%s' filter: '%s' more than 1 entry: %d",
+ realm_dn, filter, count);
+ return HDB_ERR_NOENTRY;
+ }
+ 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 count;
+ const char *realm_dn;
+ char *cross_ref_filter;
+ struct ldb_message **cross_ref_msg;
+ struct ldb_message **msg;
+
+ const char *cross_ref_attrs[] = {
+ "nCName",
+ NULL
+ };
+
+ const char *realm_attrs[] = {
+ "dnsDomain",
+ "maxPwdAge",
+ NULL
+ };
+
+ cross_ref_filter = talloc_asprintf(mem_ctx,
+ "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
+ realm, realm);
+ if (!cross_ref_filter) {
+ krb5_set_error_string(context, "asprintf: out of memory");
+ return ENOMEM;
+ }
+
+ count = ldb_search(ldb_ctx, NULL, LDB_SCOPE_SUBTREE, cross_ref_filter,
+ cross_ref_attrs, &cross_ref_msg);
+
+ if (count < 1) {
+ krb5_warnx(context, "ldb_search: filter: '%s' failed: %d", cross_ref_filter, count);
+ krb5_set_error_string(context, "ldb_search: filter: '%s' failed: %d", cross_ref_filter, count);
+
+ talloc_free(cross_ref_msg);
+ return HDB_ERR_NOENTRY;
+ } else if (count > 1) {
+ krb5_warnx(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, count);
+ krb5_set_error_string(context, "ldb_search: filter: '%s' more than 1 entry: %d", cross_ref_filter, count);
+
+ talloc_free(cross_ref_msg);
+ return HDB_ERR_NOENTRY;
+ }
+
+ realm_dn = ldb_msg_find_string(cross_ref_msg[0], "nCName", NULL);
+
+ count = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_BASE, "(objectClass=domain)",
+ realm_attrs, &msg);
+ if (pmsg) {
+ *pmsg = talloc_steal(mem_ctx, msg);
+ } else {
+ talloc_free(msg);
+ }
+
+ if (count < 1) {
+ krb5_warnx(context, "ldb_search: dn: %s not found: %d", realm_dn, count);
+ krb5_set_error_string(context, "ldb_search: dn: %s not found: %d", realm_dn, count);
+ return HDB_ERR_NOENTRY;
+ } else if (count > 1) {
+ krb5_warnx(context, "ldb_search: dn: '%s' more than 1 entry: %d", realm_dn, count);
+ krb5_set_error_string(context, "ldb_search: dn: %s more than 1 entry: %d", realm_dn, count);
+ return HDB_ERR_NOENTRY;
+ }
+
+ return 0;
+}
+
+static krb5_error_code LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
+ TALLOC_CTX *mem_ctx,
+ const char *realm_dn,
+ const char *alias_from,
+ char **alias_to)
+{
+ int i;
+ int count;
+ struct ldb_message **msg;
+ struct ldb_message_element *spnmappings;
+ char *service_dn = talloc_asprintf(mem_ctx,
+ "CN=Directory Service,CN=Windows NT,CN=Services,CN=Configuration,%s",
+ realm_dn);
+ const char *directory_attrs[] = {
+ "sPNMappings",
+ NULL
+ };
+
+ count = ldb_search(ldb_ctx, service_dn, LDB_SCOPE_BASE, "(objectClass=nTDSService)",
+ directory_attrs, &msg);
+ talloc_steal(mem_ctx, msg);
+
+ if (count < 1) {
+ krb5_warnx(context, "ldb_search: dn: %s not found: %d", service_dn, count);
+ krb5_set_error_string(context, "ldb_search: dn: %s not found: %d", service_dn, count);
+ return HDB_ERR_NOENTRY;
+ } else if (count > 1) {
+ krb5_warnx(context, "ldb_search: dn: %s found %d times!", service_dn, count);
+ krb5_set_error_string(context, "ldb_search: dn: %s found %d times!", service_dn, count);
+ return HDB_ERR_NOENTRY;
+ }
+
+ spnmappings = ldb_msg_find_element(msg[0], "sPNMappings");
+ if (!spnmappings || spnmappings->num_values == 0) {
+ krb5_warnx(context, "ldb_search: dn: %s no sPNMappings attribute", service_dn);
+ krb5_set_error_string(context, "ldb_search: dn: %s no sPNMappings attribute", service_dn);
+ }
+
+ for (i = 0; i < spnmappings->num_values; i++) {
+ char *mapping, *p, *str;
+ mapping = talloc_strdup(mem_ctx,
+ spnmappings->values[i].data);
+ if (!mapping) {
+ krb5_warnx(context, "LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping", service_dn);
+ krb5_set_error_string(context, "LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping", service_dn);
+ return HDB_ERR_NOENTRY;
+ }
+
+ /* C string manipulation sucks */
+
+ p = strchr(mapping, '=');
+ if (!p) {
+ krb5_warnx(context, "ldb_search: dn: %s sPNMapping malformed: %s",
+ service_dn, mapping);
+ krb5_set_error_string(context, "ldb_search: dn: %s sPNMapping malformed: %s",
+ service_dn, mapping);
+ }
+ p[0] = '\0';
+ p++;
+ do {
+ str = p;
+ p = strchr(p, ',');
+ if (p) {
+ p[0] = '\0';
+ p++;
+ }
+ if (strcasecmp(str, alias_from) == 0) {
+ krb5_warnx(context, "LDB_lookup_spn_alias: got alias %s for service %s",
+ mapping, alias_from);
+ *alias_to = mapping;
+ return 0;
+ }
+ } while (p);
+ }
+ krb5_warnx(context, "LDB_lookup_spn_alias: no alias for service %s applicable", alias_from);
+ return HDB_ERR_NOENTRY;
+}
+
+static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
+{
+ struct ldb_context *sam_db;
+
+ 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;
+ }
+
+ /* in future, we could cache the connect here, but for now KISS */
+
+ sam_db = ldb_connect(db->hdb_name, 0, NULL);
+ if (sam_db == NULL) {
+ krb5_warnx(context, "LDB_open: hdb_name '%s' failed\n",db->hdb_name);
+ krb5_set_error_string(context, "ldb_connect(%s, 0, NULL) failed!", db->hdb_name);
+ return HDB_ERR_NOENTRY;
+ }
+
+ db->hdb_db = talloc_steal(db, sam_db);
+
+ krb5_warnx(context, "LDB_open: hdb_name '%s' ok\n",db->hdb_name);
+
+ return 0;
+}
+
+static krb5_error_code LDB_close(krb5_context context, HDB *db)
+{
+ talloc_free(db->hdb_db);
+ db->hdb_db = NULL;
+ 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(krb5_context context, HDB *db, unsigned flags,
+ krb5_const_principal principal,
+ enum hdb_ent_type ent_type,
+ hdb_entry *entry)
+{
+ struct ldb_message **msg = NULL;
+ struct ldb_message **realm_msg = NULL;
+ krb5_error_code ret;
+
+ const char *realm;
+ const char *realm_dn;
+ TALLOC_CTX *mem_ctx = talloc_named(NULL, 0, "LDB_fetch context\n");
+
+ if (!mem_ctx) {
+ krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
+ return ENOMEM;
+ }
+
+ realm = krb5_principal_get_realm(context, principal);
+
+ ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx, realm, &realm_msg);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: could not find realm\n");
+ talloc_free(mem_ctx);
+ return HDB_ERR_NOENTRY;
+ }
+
+ realm_dn = realm_msg[0]->dn;
+
+ /* Cludge, cludge cludge. If the realm part of krbtgt/realm,
+ * is in our db, then direct the caller at our primary
+ * krgtgt */
+ if (ent_type != HDB_ENT_TYPE_KRBTGT
+ && principal->name.name_string.len == 2
+ && (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) == 0)
+ && (LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx, principal->name.name_string.val[1], NULL) == 0)) {
+ ent_type = HDB_ENT_TYPE_KRBTGT;
+ }
+
+ ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx,
+ principal, ent_type, realm_dn, &msg);
+
+ if (ret != 0) {
+ char *alias_from = principal->name.name_string.val[0];
+ char *alias_to;
+ Principal alias_principal;
+
+ /* Try again with a servicePrincipal alias */
+ if (ent_type != HDB_ENT_TYPE_SERVER && ent_type != HDB_ENT_TYPE_ENUM) {
+ talloc_free(mem_ctx);
+ return ret;
+ }
+ if (principal->name.name_string.len < 2) {
+ krb5_warnx(context, "LDB_fetch: could not find principal in DB, alias not applicable");
+ krb5_set_error_string(context, "LDB_fetch: could not find principal in DB, alias not applicable");
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ /* Look for the list of aliases */
+ ret = LDB_lookup_spn_alias(context,
+ (struct ldb_context *)db->hdb_db, mem_ctx,
+ realm_dn, alias_from,
+ &alias_to);
+ if (ret != 0) {
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ ret = copy_Principal(principal, &alias_principal);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: could not copy principal");
+ krb5_set_error_string(context, "LDB_fetch: could not copy principal");
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ /* ooh, very nasty playing around in the Principal... */
+ free(alias_principal.name.name_string.val[0]);
+ alias_principal.name.name_string.val[0] = strdup(alias_to);
+ if (!alias_principal.name.name_string.val[0]) {
+ krb5_warnx(context, "LDB_fetch: strdup() failed");
+ krb5_set_error_string(context, "LDB_fetch: strdup() failed");
+ ret = ENOMEM;
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx,
+ &alias_principal, ent_type, realm_dn, &msg);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: could not find alias principal in DB");
+ krb5_set_error_string(context, "LDB_fetch: could not find alias principal in DB");
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ }
+ if (ret == 0) {
+ ret = LDB_message2entry(context, db, mem_ctx,
+ principal, ent_type,
+ realm_msg[0], msg[0], entry);
+ if (ret != 0) {
+ krb5_warnx(context, "LDB_fetch: message2entry failed\n");
+#if 0 /* master key support removed */
+ } else {
+ if (db->hdb_master_key_set && (!(flags & HDB_F_DECRYPT))) {
+ ret = hdb_seal_keys(context, db, entry);
+ }
+#endif
+ }
+ }
+
+ talloc_free(mem_ctx);
+ return ret;
+}
+
+static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
+{
+ return HDB_ERR_DB_INUSE;
+}
+
+static krb5_error_code LDB_remove(krb5_context context, HDB *db, hdb_entry *entry)
+{
+ 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_msgs;
+};
+
+static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
+{
+ krb5_error_code ret;
+ struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
+ TALLOC_CTX *mem_ctx;
+ 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_ENT_TYPE_ENUM,
+ priv->realm_msgs[0], priv->msgs[priv->index++], entry);
+ } else {
+ ret = HDB_ERR_NOENTRY;
+ }
+
+ if (ret != 0) {
+ talloc_free(priv);
+ db->hdb_openp = NULL;
+#if 0 /* master key support removed */
+ } else {
+ if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
+ ret = hdb_unseal_keys(context, db, entry);
+ if (ret != 0) {
+ hdb_free_entry(context,entry);
+ }
+ }
+#endif
+ } else {
+ talloc_free(mem_ctx);
+ }
+
+ return ret;
+}
+
+static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
+ hdb_entry *entry)
+{
+ struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
+ struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_openp;
+ char *realm;
+ char *realm_dn = NULL;
+ struct ldb_message **msgs = NULL;
+ struct ldb_message **realm_msgs = NULL;
+ krb5_error_code ret;
+ TALLOC_CTX *mem_ctx;
+
+ if (priv) {
+ talloc_free(priv);
+ db->hdb_openp = 0;
+ }
+
+ 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_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_msgs);
+
+ free(realm);
+
+ if (ret != 0) {
+ talloc_free(priv);
+ krb5_warnx(context, "LDB_fetch: could not find realm\n");
+ return HDB_ERR_NOENTRY;
+ }
+
+ realm_dn = realm_msgs[0]->dn;
+
+ priv->realm_msgs = talloc_steal(priv, realm_msgs);
+
+ krb5_warnx(context, "LDB_lookup_principal: realm ok\n");
+
+ priv->count = ldb_search(ldb_ctx, realm_dn,
+ LDB_SCOPE_SUBTREE, "(objectClass=user)",
+ krb5_attrs, &msgs);
+
+ priv->msgs = talloc_steal(priv, msgs);
+
+ if (priv->count <= 0) {
+ talloc_free(priv);
+ return HDB_ERR_NOENTRY;
+ }
+
+ db->hdb_openp = priv;
+
+ ret = LDB_seq(context, db, flags, entry);
+
+ if (ret != 0) {
+ talloc_free(priv);
+ db->hdb_openp = NULL;
+ } else {
+ talloc_free(mem_ctx);
+ }
+ return ret;
+}
+
+static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
+ hdb_entry *entry)
+{
+ return LDB_seq(context, db, flags, entry);
+}
+
+#if 0 /* no way to easily get context here, and we don't want to use master keys anyway */
+static int LDB_db_destructor(void *ptr)
+{
+ HDB *db = talloc_get_type(ptr, HDB);
+ hdb_clear_master_key(context, db);
+ return 0;
+}
+#endif
+
+static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
+{
+ talloc_free(db);
+ return 0;
+}
+
+krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
+{
+ *db = talloc(NULL, HDB);
+ if (!*db) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ (*db)->hdb_master_key_set = 0;
+ (*db)->hdb_db = NULL;
+#if 0
+ talloc_set_destructor(*db, LDB_db_destructor);
+#endif
+ if (!arg || arg[0] == '\0') {
+ talloc_free(*db);
+ krb5_set_error_string(context, "hdb_ldb_create: no db name specified");
+ return EINVAL;
+ } else {
+ (*db)->hdb_name = talloc_strdup(*db, arg);
+ if ((*db)->hdb_name == NULL) {
+ krb5_set_error_string(context, "strdup: out of memory");
+ talloc_free(*db);
+ *db = NULL;
+ return ENOMEM;
+ }
+ }
+
+ krb5_warnx(context, "hdb_ldb_create: hdb_name '%s'\n", (*db)->hdb_name);
+
+ (*db)->hdb_openp = 0;
+ (*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 0;
+}
git.samba.org / samba.git / commitdiff