1939 lines
46 KiB
C
1939 lines
46 KiB
C
/*
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* Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
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* Copyright (c) 2004, Andrew Bartlett.
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* Copyright (c) 2003 - 2008, Kungliga Tekniska Högskolan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of PADL Software nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "hdb_locl.h"
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#ifdef OPENLDAP
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#include <lber.h>
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#include <ldap.h>
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#include <sys/un.h>
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#include <hex.h>
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static krb5_error_code LDAP__connect(krb5_context context, HDB *);
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static krb5_error_code LDAP_close(krb5_context context, HDB *);
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static krb5_error_code
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LDAP_message2entry(krb5_context context, HDB * db, LDAPMessage * msg,
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int flags, hdb_entry_ex * ent);
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static const char *default_structural_object = "account";
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static char *structural_object;
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static krb5_boolean samba_forwardable;
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struct hdbldapdb {
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LDAP *h_lp;
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int h_msgid;
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char *h_base;
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char *h_url;
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char *h_createbase;
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};
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#define HDB2LDAP(db) (((struct hdbldapdb *)(db)->hdb_db)->h_lp)
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#define HDB2MSGID(db) (((struct hdbldapdb *)(db)->hdb_db)->h_msgid)
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#define HDBSETMSGID(db,msgid) \
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do { ((struct hdbldapdb *)(db)->hdb_db)->h_msgid = msgid; } while(0)
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#define HDB2BASE(dn) (((struct hdbldapdb *)(db)->hdb_db)->h_base)
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#define HDB2URL(dn) (((struct hdbldapdb *)(db)->hdb_db)->h_url)
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#define HDB2CREATE(db) (((struct hdbldapdb *)(db)->hdb_db)->h_createbase)
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/*
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*
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*/
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static char * krb5kdcentry_attrs[] = {
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"cn",
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"createTimestamp",
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"creatorsName",
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"krb5EncryptionType",
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"krb5KDCFlags",
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"krb5Key",
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"krb5KeyVersionNumber",
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"krb5MaxLife",
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"krb5MaxRenew",
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"krb5PasswordEnd",
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"krb5PrincipalName",
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"krb5PrincipalRealm",
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"krb5ValidEnd",
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"krb5ValidStart",
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"modifiersName",
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"modifyTimestamp",
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"objectClass",
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"sambaAcctFlags",
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"sambaKickoffTime",
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"sambaNTPassword",
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"sambaPwdLastSet",
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"sambaPwdMustChange",
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"uid",
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NULL
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};
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static char *krb5principal_attrs[] = {
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"cn",
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"createTimestamp",
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"creatorsName",
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"krb5PrincipalName",
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"krb5PrincipalRealm",
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"modifiersName",
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"modifyTimestamp",
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"objectClass",
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"uid",
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NULL
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};
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static int
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LDAP_no_size_limit(krb5_context context, LDAP *lp)
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{
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int ret, limit = LDAP_NO_LIMIT;
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ret = ldap_set_option(lp, LDAP_OPT_SIZELIMIT, (const void *)&limit);
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if (ret != LDAP_SUCCESS) {
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krb5_set_error_message(context, HDB_ERR_BADVERSION,
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"ldap_set_option: %s",
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ldap_err2string(ret));
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return HDB_ERR_BADVERSION;
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}
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return 0;
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}
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static int
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check_ldap(krb5_context context, HDB *db, int ret)
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{
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switch (ret) {
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case LDAP_SUCCESS:
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return 0;
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case LDAP_SERVER_DOWN:
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LDAP_close(context, db);
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return 1;
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default:
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return 1;
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}
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}
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static krb5_error_code
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LDAP__setmod(LDAPMod *** modlist, int modop, const char *attribute,
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int *pIndex)
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{
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int cMods;
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if (*modlist == NULL) {
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*modlist = (LDAPMod **)ber_memcalloc(1, sizeof(LDAPMod *));
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if (*modlist == NULL)
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return ENOMEM;
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}
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for (cMods = 0; (*modlist)[cMods] != NULL; cMods++) {
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if ((*modlist)[cMods]->mod_op == modop &&
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strcasecmp((*modlist)[cMods]->mod_type, attribute) == 0) {
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break;
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}
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}
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*pIndex = cMods;
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if ((*modlist)[cMods] == NULL) {
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LDAPMod *mod;
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*modlist = (LDAPMod **)ber_memrealloc(*modlist,
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(cMods + 2) * sizeof(LDAPMod *));
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if (*modlist == NULL)
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return ENOMEM;
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(*modlist)[cMods] = (LDAPMod *)ber_memalloc(sizeof(LDAPMod));
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if ((*modlist)[cMods] == NULL)
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return ENOMEM;
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mod = (*modlist)[cMods];
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mod->mod_op = modop;
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mod->mod_type = ber_strdup(attribute);
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if (mod->mod_type == NULL) {
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ber_memfree(mod);
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(*modlist)[cMods] = NULL;
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return ENOMEM;
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}
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if (modop & LDAP_MOD_BVALUES) {
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mod->mod_bvalues = NULL;
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} else {
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mod->mod_values = NULL;
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}
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(*modlist)[cMods + 1] = NULL;
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}
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return 0;
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}
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static krb5_error_code
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LDAP_addmod_len(LDAPMod *** modlist, int modop, const char *attribute,
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unsigned char *value, size_t len)
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{
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krb5_error_code ret;
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int cMods, i = 0;
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ret = LDAP__setmod(modlist, modop | LDAP_MOD_BVALUES, attribute, &cMods);
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if (ret)
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return ret;
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if (value != NULL) {
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struct berval **bv;
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bv = (*modlist)[cMods]->mod_bvalues;
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if (bv != NULL) {
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for (i = 0; bv[i] != NULL; i++)
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;
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bv = ber_memrealloc(bv, (i + 2) * sizeof(*bv));
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} else
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bv = ber_memalloc(2 * sizeof(*bv));
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if (bv == NULL)
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return ENOMEM;
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(*modlist)[cMods]->mod_bvalues = bv;
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bv[i] = ber_memalloc(sizeof(**bv));;
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if (bv[i] == NULL)
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return ENOMEM;
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bv[i]->bv_val = (void *)value;
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bv[i]->bv_len = len;
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bv[i + 1] = NULL;
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}
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return 0;
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}
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static krb5_error_code
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LDAP_addmod(LDAPMod *** modlist, int modop, const char *attribute,
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const char *value)
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{
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int cMods, i = 0;
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krb5_error_code ret;
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ret = LDAP__setmod(modlist, modop, attribute, &cMods);
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if (ret)
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return ret;
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if (value != NULL) {
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char **bv;
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bv = (*modlist)[cMods]->mod_values;
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if (bv != NULL) {
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for (i = 0; bv[i] != NULL; i++)
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;
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bv = ber_memrealloc(bv, (i + 2) * sizeof(*bv));
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} else
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bv = ber_memalloc(2 * sizeof(*bv));
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if (bv == NULL)
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return ENOMEM;
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(*modlist)[cMods]->mod_values = bv;
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bv[i] = ber_strdup(value);
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if (bv[i] == NULL)
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return ENOMEM;
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bv[i + 1] = NULL;
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}
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return 0;
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}
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static krb5_error_code
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LDAP_addmod_generalized_time(LDAPMod *** mods, int modop,
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const char *attribute, KerberosTime * time)
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{
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char buf[22];
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struct tm *tm;
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/* XXX not threadsafe */
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tm = gmtime(time);
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strftime(buf, sizeof(buf), "%Y%m%d%H%M%SZ", tm);
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return LDAP_addmod(mods, modop, attribute, buf);
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}
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static krb5_error_code
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LDAP_addmod_integer(krb5_context context,
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LDAPMod *** mods, int modop,
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const char *attribute, unsigned long l)
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{
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krb5_error_code ret;
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char *buf;
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ret = asprintf(&buf, "%ld", l);
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if (ret < 0) {
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krb5_set_error_message(context, ENOMEM,
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"asprintf: out of memory:");
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return ENOMEM;
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}
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ret = LDAP_addmod(mods, modop, attribute, buf);
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free (buf);
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return ret;
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}
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static krb5_error_code
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LDAP_get_string_value(HDB * db, LDAPMessage * entry,
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const char *attribute, char **ptr)
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{
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struct berval **vals;
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vals = ldap_get_values_len(HDB2LDAP(db), entry, attribute);
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if (vals == NULL || vals[0] == NULL) {
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*ptr = NULL;
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return HDB_ERR_NOENTRY;
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}
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*ptr = malloc(vals[0]->bv_len + 1);
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if (*ptr == NULL) {
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ldap_value_free_len(vals);
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return ENOMEM;
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}
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memcpy(*ptr, vals[0]->bv_val, vals[0]->bv_len);
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(*ptr)[vals[0]->bv_len] = 0;
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ldap_value_free_len(vals);
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return 0;
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}
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static krb5_error_code
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LDAP_get_integer_value(HDB * db, LDAPMessage * entry,
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const char *attribute, int *ptr)
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{
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krb5_error_code ret;
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char *val;
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ret = LDAP_get_string_value(db, entry, attribute, &val);
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if (ret)
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return ret;
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*ptr = atoi(val);
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free(val);
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return 0;
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}
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static krb5_error_code
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LDAP_get_generalized_time_value(HDB * db, LDAPMessage * entry,
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const char *attribute, KerberosTime * kt)
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{
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char *tmp, *gentime;
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struct tm tm;
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int ret;
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*kt = 0;
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ret = LDAP_get_string_value(db, entry, attribute, &gentime);
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if (ret)
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return ret;
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tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
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if (tmp == NULL) {
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free(gentime);
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return HDB_ERR_NOENTRY;
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}
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free(gentime);
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*kt = timegm(&tm);
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return 0;
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}
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static int
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bervalstrcmp(struct berval *v, const char *str)
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{
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size_t len = strlen(str);
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return (v->bv_len == len) && strncasecmp(str, (char *)v->bv_val, len) == 0;
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}
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static krb5_error_code
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LDAP_entry2mods(krb5_context context, HDB * db, hdb_entry_ex * ent,
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LDAPMessage * msg, LDAPMod *** pmods)
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{
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krb5_error_code ret;
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krb5_boolean is_new_entry;
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char *tmp = NULL;
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LDAPMod **mods = NULL;
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hdb_entry_ex orig;
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unsigned long oflags, nflags;
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int i;
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krb5_boolean is_samba_account = FALSE;
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krb5_boolean is_account = FALSE;
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krb5_boolean is_heimdal_entry = FALSE;
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krb5_boolean is_heimdal_principal = FALSE;
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struct berval **vals;
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*pmods = NULL;
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if (msg != NULL) {
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ret = LDAP_message2entry(context, db, msg, 0, &orig);
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if (ret)
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goto out;
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is_new_entry = FALSE;
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vals = ldap_get_values_len(HDB2LDAP(db), msg, "objectClass");
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if (vals) {
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int num_objectclasses = ldap_count_values_len(vals);
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for (i=0; i < num_objectclasses; i++) {
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if (bervalstrcmp(vals[i], "sambaSamAccount"))
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is_samba_account = TRUE;
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else if (bervalstrcmp(vals[i], structural_object))
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is_account = TRUE;
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else if (bervalstrcmp(vals[i], "krb5Principal"))
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is_heimdal_principal = TRUE;
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else if (bervalstrcmp(vals[i], "krb5KDCEntry"))
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is_heimdal_entry = TRUE;
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}
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ldap_value_free_len(vals);
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}
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/*
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* If this is just a "account" entry and no other objectclass
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* is hanging on this entry, it's really a new entry.
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*/
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if (is_samba_account == FALSE && is_heimdal_principal == FALSE &&
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is_heimdal_entry == FALSE) {
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if (is_account == TRUE) {
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is_new_entry = TRUE;
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} else {
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ret = HDB_ERR_NOENTRY;
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goto out;
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}
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}
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} else
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is_new_entry = TRUE;
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if (is_new_entry) {
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/* to make it perfectly obvious we're depending on
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* orig being intiialized to zero */
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memset(&orig, 0, sizeof(orig));
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ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "top");
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if (ret)
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goto out;
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/* account is the structural object class */
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if (is_account == FALSE) {
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ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass",
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structural_object);
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is_account = TRUE;
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if (ret)
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goto out;
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}
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ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "krb5Principal");
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is_heimdal_principal = TRUE;
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if (ret)
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goto out;
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ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "krb5KDCEntry");
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is_heimdal_entry = TRUE;
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if (ret)
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goto out;
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}
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if (is_new_entry ||
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krb5_principal_compare(context, ent->entry.principal, orig.entry.principal)
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== FALSE)
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{
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if (is_heimdal_principal || is_heimdal_entry) {
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ret = krb5_unparse_name(context, ent->entry.principal, &tmp);
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if (ret)
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goto out;
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ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE,
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"krb5PrincipalName", tmp);
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if (ret) {
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free(tmp);
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goto out;
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}
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free(tmp);
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}
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if (is_account || is_samba_account) {
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ret = krb5_unparse_name_short(context, ent->entry.principal, &tmp);
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if (ret)
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goto out;
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ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE, "uid", tmp);
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if (ret) {
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free(tmp);
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goto out;
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}
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free(tmp);
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}
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}
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if (is_heimdal_entry && (ent->entry.kvno != orig.entry.kvno || is_new_entry)) {
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ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
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"krb5KeyVersionNumber",
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ent->entry.kvno);
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if (ret)
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goto out;
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}
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if (is_heimdal_entry && ent->entry.valid_start) {
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if (orig.entry.valid_end == NULL
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|| (*(ent->entry.valid_start) != *(orig.entry.valid_start))) {
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ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
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"krb5ValidStart",
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ent->entry.valid_start);
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if (ret)
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goto out;
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}
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}
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if (ent->entry.valid_end) {
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if (orig.entry.valid_end == NULL || (*(ent->entry.valid_end) != *(orig.entry.valid_end))) {
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if (is_heimdal_entry) {
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ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
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"krb5ValidEnd",
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ent->entry.valid_end);
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if (ret)
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goto out;
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}
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if (is_samba_account) {
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"sambaKickoffTime",
|
|
*(ent->entry.valid_end));
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ent->entry.pw_end) {
|
|
if (orig.entry.pw_end == NULL || (*(ent->entry.pw_end) != *(orig.entry.pw_end))) {
|
|
if (is_heimdal_entry) {
|
|
ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
|
|
"krb5PasswordEnd",
|
|
ent->entry.pw_end);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
if (is_samba_account) {
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"sambaPwdMustChange",
|
|
*(ent->entry.pw_end));
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#if 0 /* we we have last_pw_change */
|
|
if (is_samba_account && ent->entry.last_pw_change) {
|
|
if (orig.entry.last_pw_change == NULL || (*(ent->entry.last_pw_change) != *(orig.entry.last_pw_change))) {
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"sambaPwdLastSet",
|
|
*(ent->entry.last_pw_change));
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (is_heimdal_entry && ent->entry.max_life) {
|
|
if (orig.entry.max_life == NULL
|
|
|| (*(ent->entry.max_life) != *(orig.entry.max_life))) {
|
|
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"krb5MaxLife",
|
|
*(ent->entry.max_life));
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (is_heimdal_entry && ent->entry.max_renew) {
|
|
if (orig.entry.max_renew == NULL
|
|
|| (*(ent->entry.max_renew) != *(orig.entry.max_renew))) {
|
|
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"krb5MaxRenew",
|
|
*(ent->entry.max_renew));
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
oflags = HDBFlags2int(orig.entry.flags);
|
|
nflags = HDBFlags2int(ent->entry.flags);
|
|
|
|
if (is_heimdal_entry && oflags != nflags) {
|
|
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"krb5KDCFlags",
|
|
nflags);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
/* Remove keys if they exists, and then replace keys. */
|
|
if (!is_new_entry && orig.entry.keys.len > 0) {
|
|
vals = ldap_get_values_len(HDB2LDAP(db), msg, "krb5Key");
|
|
if (vals) {
|
|
ldap_value_free_len(vals);
|
|
|
|
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE, "krb5Key", NULL);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ent->entry.keys.len; i++) {
|
|
|
|
if (is_samba_account
|
|
&& ent->entry.keys.val[i].key.keytype == ETYPE_ARCFOUR_HMAC_MD5) {
|
|
char *ntHexPassword;
|
|
char *nt;
|
|
time_t now = time(NULL);
|
|
|
|
/* the key might have been 'sealed', but samba passwords
|
|
are clear in the directory */
|
|
ret = hdb_unseal_key(context, db, &ent->entry.keys.val[i]);
|
|
if (ret)
|
|
goto out;
|
|
|
|
nt = ent->entry.keys.val[i].key.keyvalue.data;
|
|
/* store in ntPassword, not krb5key */
|
|
ret = hex_encode(nt, 16, &ntHexPassword);
|
|
if (ret < 0) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "hdb-ldap: failed to "
|
|
"hex encode key");
|
|
goto out;
|
|
}
|
|
ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE, "sambaNTPassword",
|
|
ntHexPassword);
|
|
free(ntHexPassword);
|
|
if (ret)
|
|
goto out;
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
|
|
"sambaPwdLastSet", now);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* have to kill the LM passwod if it exists */
|
|
vals = ldap_get_values_len(HDB2LDAP(db), msg, "sambaLMPassword");
|
|
if (vals) {
|
|
ldap_value_free_len(vals);
|
|
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE,
|
|
"sambaLMPassword", NULL);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
} else if (is_heimdal_entry) {
|
|
unsigned char *buf;
|
|
size_t len, buf_size;
|
|
|
|
ASN1_MALLOC_ENCODE(Key, buf, buf_size, &ent->entry.keys.val[i], &len, ret);
|
|
if (ret)
|
|
goto out;
|
|
if(buf_size != len)
|
|
krb5_abortx(context, "internal error in ASN.1 encoder");
|
|
|
|
/* addmod_len _owns_ the key, doesn't need to copy it */
|
|
ret = LDAP_addmod_len(&mods, LDAP_MOD_ADD, "krb5Key", buf, len);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (ent->entry.etypes) {
|
|
int add_krb5EncryptionType = 0;
|
|
|
|
/*
|
|
* Only add/modify krb5EncryptionType if it's a new heimdal
|
|
* entry or krb5EncryptionType already exists on the entry.
|
|
*/
|
|
|
|
if (!is_new_entry) {
|
|
vals = ldap_get_values_len(HDB2LDAP(db), msg, "krb5EncryptionType");
|
|
if (vals) {
|
|
ldap_value_free_len(vals);
|
|
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE, "krb5EncryptionType",
|
|
NULL);
|
|
if (ret)
|
|
goto out;
|
|
add_krb5EncryptionType = 1;
|
|
}
|
|
} else if (is_heimdal_entry)
|
|
add_krb5EncryptionType = 1;
|
|
|
|
if (add_krb5EncryptionType) {
|
|
for (i = 0; i < ent->entry.etypes->len; i++) {
|
|
if (is_samba_account &&
|
|
ent->entry.keys.val[i].key.keytype == ETYPE_ARCFOUR_HMAC_MD5)
|
|
{
|
|
;
|
|
} else if (is_heimdal_entry) {
|
|
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_ADD,
|
|
"krb5EncryptionType",
|
|
ent->entry.etypes->val[i]);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* for clarity */
|
|
ret = 0;
|
|
|
|
out:
|
|
|
|
if (ret == 0)
|
|
*pmods = mods;
|
|
else if (mods != NULL) {
|
|
ldap_mods_free(mods, 1);
|
|
*pmods = NULL;
|
|
}
|
|
|
|
if (msg)
|
|
hdb_free_entry(context, &orig);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_dn2principal(krb5_context context, HDB * db, const char *dn,
|
|
krb5_principal * principal)
|
|
{
|
|
krb5_error_code ret;
|
|
int rc;
|
|
const char *filter = "(objectClass=krb5Principal)";
|
|
LDAPMessage *res = NULL, *e;
|
|
char *p;
|
|
|
|
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
|
|
if (ret)
|
|
goto out;
|
|
|
|
rc = ldap_search_ext_s(HDB2LDAP(db), dn, LDAP_SCOPE_SUBTREE,
|
|
filter, krb5principal_attrs, 0,
|
|
NULL, NULL, NULL,
|
|
0, &res);
|
|
if (check_ldap(context, db, rc)) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
krb5_set_error_message(context, ret, "ldap_search_ext_s: "
|
|
"filter: %s error: %s",
|
|
filter, ldap_err2string(rc));
|
|
goto out;
|
|
}
|
|
|
|
e = ldap_first_entry(HDB2LDAP(db), res);
|
|
if (e == NULL) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
}
|
|
|
|
ret = LDAP_get_string_value(db, e, "krb5PrincipalName", &p);
|
|
if (ret) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
}
|
|
|
|
ret = krb5_parse_name(context, p, principal);
|
|
free(p);
|
|
|
|
out:
|
|
if (res)
|
|
ldap_msgfree(res);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
need_quote(unsigned char c)
|
|
{
|
|
return (c & 0x80) ||
|
|
(c < 32) ||
|
|
(c == '(') ||
|
|
(c == ')') ||
|
|
(c == '*') ||
|
|
(c == '\\') ||
|
|
(c == 0x7f);
|
|
}
|
|
|
|
const static char hexchar[] = "0123456789ABCDEF";
|
|
|
|
static krb5_error_code
|
|
escape_value(krb5_context context, const unsigned char *unquoted, char **quoted)
|
|
{
|
|
size_t i, len;
|
|
|
|
for (i = 0, len = 0; unquoted[i] != '\0'; i++, len++) {
|
|
if (need_quote((unsigned char)unquoted[i]))
|
|
len += 2;
|
|
}
|
|
|
|
*quoted = malloc(len + 1);
|
|
if (*quoted == NULL) {
|
|
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
|
|
for (i = 0; unquoted[0] ; unquoted++) {
|
|
if (need_quote((unsigned char *)unquoted[0])) {
|
|
(*quoted)[i++] = '\\';
|
|
(*quoted)[i++] = hexchar[(unquoted[0] >> 4) & 0xf];
|
|
(*quoted)[i++] = hexchar[(unquoted[0] ) & 0xf];
|
|
} else
|
|
(*quoted)[i++] = (char)unquoted[0];
|
|
}
|
|
(*quoted)[i] = '\0';
|
|
return 0;
|
|
}
|
|
|
|
|
|
static krb5_error_code
|
|
LDAP__lookup_princ(krb5_context context,
|
|
HDB *db,
|
|
const char *princname,
|
|
const char *userid,
|
|
LDAPMessage **msg)
|
|
{
|
|
krb5_error_code ret;
|
|
int rc;
|
|
char *quote, *filter = NULL;
|
|
|
|
ret = LDAP__connect(context, db);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Quote searches that contain filter language, this quote
|
|
* searches for *@REALM, which takes very long time.
|
|
*/
|
|
|
|
ret = escape_value(context, princname, "e);
|
|
if (ret)
|
|
goto out;
|
|
|
|
rc = asprintf(&filter,
|
|
"(&(objectClass=krb5Principal)(krb5PrincipalName=%s))",
|
|
quote);
|
|
free(quote);
|
|
|
|
if (rc < 0) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
|
|
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
|
|
if (ret)
|
|
goto out;
|
|
|
|
rc = ldap_search_ext_s(HDB2LDAP(db), HDB2BASE(db),
|
|
LDAP_SCOPE_SUBTREE, filter,
|
|
krb5kdcentry_attrs, 0,
|
|
NULL, NULL, NULL,
|
|
0, msg);
|
|
if (check_ldap(context, db, rc)) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
krb5_set_error_message(context, ret, "ldap_search_ext_s: "
|
|
"filter: %s - error: %s",
|
|
filter, ldap_err2string(rc));
|
|
goto out;
|
|
}
|
|
|
|
if (userid && ldap_count_entries(HDB2LDAP(db), *msg) == 0) {
|
|
free(filter);
|
|
filter = NULL;
|
|
ldap_msgfree(*msg);
|
|
*msg = NULL;
|
|
|
|
ret = escape_value(context, princname, "e);
|
|
if (ret)
|
|
goto out;
|
|
|
|
rc = asprintf(&filter,
|
|
"(&(|(objectClass=sambaSamAccount)(objectClass=%s))(uid=%s))",
|
|
structural_object, quote);
|
|
free(quote);
|
|
if (rc < 0) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "asprintf: out of memory");
|
|
goto out;
|
|
}
|
|
|
|
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
|
|
if (ret)
|
|
goto out;
|
|
|
|
rc = ldap_search_ext_s(HDB2LDAP(db), HDB2BASE(db), LDAP_SCOPE_SUBTREE,
|
|
filter, krb5kdcentry_attrs, 0,
|
|
NULL, NULL, NULL,
|
|
0, msg);
|
|
if (check_ldap(context, db, rc)) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
krb5_set_error_message(context, ret,
|
|
"ldap_search_ext_s: filter: %s error: %s",
|
|
filter, ldap_err2string(rc));
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
if (filter)
|
|
free(filter);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_principal2message(krb5_context context, HDB * db,
|
|
krb5_const_principal princ, LDAPMessage ** msg)
|
|
{
|
|
char *name, *name_short = NULL;
|
|
krb5_error_code ret;
|
|
krb5_realm *r, *r0;
|
|
|
|
*msg = NULL;
|
|
|
|
ret = krb5_unparse_name(context, princ, &name);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = krb5_get_default_realms(context, &r0);
|
|
if(ret) {
|
|
free(name);
|
|
return ret;
|
|
}
|
|
for (r = r0; *r != NULL; r++) {
|
|
if(strcmp(krb5_principal_get_realm(context, princ), *r) == 0) {
|
|
ret = krb5_unparse_name_short(context, princ, &name_short);
|
|
if (ret) {
|
|
krb5_free_host_realm(context, r0);
|
|
free(name);
|
|
return ret;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
krb5_free_host_realm(context, r0);
|
|
|
|
ret = LDAP__lookup_princ(context, db, name, name_short, msg);
|
|
free(name);
|
|
free(name_short);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Construct an hdb_entry from a directory entry.
|
|
*/
|
|
static krb5_error_code
|
|
LDAP_message2entry(krb5_context context, HDB * db, LDAPMessage * msg,
|
|
int flags, hdb_entry_ex * ent)
|
|
{
|
|
char *unparsed_name = NULL, *dn = NULL, *ntPasswordIN = NULL;
|
|
char *samba_acct_flags = NULL;
|
|
struct berval **keys;
|
|
struct berval **vals;
|
|
int tmp, tmp_time, i, ret, have_arcfour = 0;
|
|
|
|
memset(ent, 0, sizeof(*ent));
|
|
ent->entry.flags = int2HDBFlags(0);
|
|
|
|
ret = LDAP_get_string_value(db, msg, "krb5PrincipalName", &unparsed_name);
|
|
if (ret == 0) {
|
|
ret = krb5_parse_name(context, unparsed_name, &ent->entry.principal);
|
|
if (ret)
|
|
goto out;
|
|
} else {
|
|
ret = LDAP_get_string_value(db, msg, "uid",
|
|
&unparsed_name);
|
|
if (ret == 0) {
|
|
ret = krb5_parse_name(context, unparsed_name, &ent->entry.principal);
|
|
if (ret)
|
|
goto out;
|
|
} else {
|
|
krb5_set_error_message(context, HDB_ERR_NOENTRY,
|
|
"hdb-ldap: ldap entry missing"
|
|
"principal name");
|
|
return HDB_ERR_NOENTRY;
|
|
}
|
|
}
|
|
|
|
{
|
|
int integer;
|
|
ret = LDAP_get_integer_value(db, msg, "krb5KeyVersionNumber",
|
|
&integer);
|
|
if (ret)
|
|
ent->entry.kvno = 0;
|
|
else
|
|
ent->entry.kvno = integer;
|
|
}
|
|
|
|
keys = ldap_get_values_len(HDB2LDAP(db), msg, "krb5Key");
|
|
if (keys != NULL) {
|
|
int i;
|
|
size_t l;
|
|
|
|
ent->entry.keys.len = ldap_count_values_len(keys);
|
|
ent->entry.keys.val = (Key *) calloc(ent->entry.keys.len, sizeof(Key));
|
|
if (ent->entry.keys.val == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "calloc: out of memory");
|
|
goto out;
|
|
}
|
|
for (i = 0; i < ent->entry.keys.len; i++) {
|
|
decode_Key((unsigned char *) keys[i]->bv_val,
|
|
(size_t) keys[i]->bv_len, &ent->entry.keys.val[i], &l);
|
|
}
|
|
ber_bvecfree(keys);
|
|
} else {
|
|
#if 1
|
|
/*
|
|
* This violates the ASN1 but it allows a principal to
|
|
* be related to a general directory entry without creating
|
|
* the keys. Hopefully it's OK.
|
|
*/
|
|
ent->entry.keys.len = 0;
|
|
ent->entry.keys.val = NULL;
|
|
#else
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
#endif
|
|
}
|
|
|
|
vals = ldap_get_values_len(HDB2LDAP(db), msg, "krb5EncryptionType");
|
|
if (vals != NULL) {
|
|
int i;
|
|
|
|
ent->entry.etypes = malloc(sizeof(*(ent->entry.etypes)));
|
|
if (ent->entry.etypes == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret,"malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ent->entry.etypes->len = ldap_count_values_len(vals);
|
|
ent->entry.etypes->val = calloc(ent->entry.etypes->len, sizeof(int));
|
|
if (ent->entry.etypes->val == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
ent->entry.etypes->len = 0;
|
|
goto out;
|
|
}
|
|
for (i = 0; i < ent->entry.etypes->len; i++) {
|
|
char *buf;
|
|
|
|
buf = malloc(vals[i]->bv_len + 1);
|
|
if (buf == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
memcpy(buf, vals[i]->bv_val, vals[i]->bv_len);
|
|
buf[vals[i]->bv_len] = '\0';
|
|
ent->entry.etypes->val[i] = atoi(buf);
|
|
free(buf);
|
|
}
|
|
ldap_value_free_len(vals);
|
|
}
|
|
|
|
for (i = 0; i < ent->entry.keys.len; i++) {
|
|
if (ent->entry.keys.val[i].key.keytype == ETYPE_ARCFOUR_HMAC_MD5) {
|
|
have_arcfour = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* manually construct the NT (type 23) key */
|
|
ret = LDAP_get_string_value(db, msg, "sambaNTPassword", &ntPasswordIN);
|
|
if (ret == 0 && have_arcfour == 0) {
|
|
unsigned *etypes;
|
|
Key *keys;
|
|
int i;
|
|
|
|
keys = realloc(ent->entry.keys.val,
|
|
(ent->entry.keys.len + 1) * sizeof(ent->entry.keys.val[0]));
|
|
if (keys == NULL) {
|
|
free(ntPasswordIN);
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ent->entry.keys.val = keys;
|
|
memset(&ent->entry.keys.val[ent->entry.keys.len], 0, sizeof(Key));
|
|
ent->entry.keys.val[ent->entry.keys.len].key.keytype = ETYPE_ARCFOUR_HMAC_MD5;
|
|
ret = krb5_data_alloc (&ent->entry.keys.val[ent->entry.keys.len].key.keyvalue, 16);
|
|
if (ret) {
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
free(ntPasswordIN);
|
|
ret = ENOMEM;
|
|
goto out;
|
|
}
|
|
ret = hex_decode(ntPasswordIN,
|
|
ent->entry.keys.val[ent->entry.keys.len].key.keyvalue.data, 16);
|
|
ent->entry.keys.len++;
|
|
|
|
if (ent->entry.etypes == NULL) {
|
|
ent->entry.etypes = malloc(sizeof(*(ent->entry.etypes)));
|
|
if (ent->entry.etypes == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ent->entry.etypes->val = NULL;
|
|
ent->entry.etypes->len = 0;
|
|
}
|
|
|
|
for (i = 0; i < ent->entry.etypes->len; i++)
|
|
if (ent->entry.etypes->val[i] == ETYPE_ARCFOUR_HMAC_MD5)
|
|
break;
|
|
/* If there is no ARCFOUR enctype, add one */
|
|
if (i == ent->entry.etypes->len) {
|
|
etypes = realloc(ent->entry.etypes->val,
|
|
(ent->entry.etypes->len + 1) *
|
|
sizeof(ent->entry.etypes->val[0]));
|
|
if (etypes == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ent->entry.etypes->val = etypes;
|
|
ent->entry.etypes->val[ent->entry.etypes->len] =
|
|
ETYPE_ARCFOUR_HMAC_MD5;
|
|
ent->entry.etypes->len++;
|
|
}
|
|
}
|
|
|
|
ret = LDAP_get_generalized_time_value(db, msg, "createTimestamp",
|
|
&ent->entry.created_by.time);
|
|
if (ret)
|
|
ent->entry.created_by.time = time(NULL);
|
|
|
|
ent->entry.created_by.principal = NULL;
|
|
|
|
if (flags & HDB_F_ADMIN_DATA) {
|
|
ret = LDAP_get_string_value(db, msg, "creatorsName", &dn);
|
|
if (ret == 0) {
|
|
LDAP_dn2principal(context, db, dn, &ent->entry.created_by.principal);
|
|
free(dn);
|
|
}
|
|
|
|
ent->entry.modified_by = calloc(1, sizeof(*ent->entry.modified_by));
|
|
if (ent->entry.modified_by == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
|
|
ret = LDAP_get_generalized_time_value(db, msg, "modifyTimestamp",
|
|
&ent->entry.modified_by->time);
|
|
if (ret == 0) {
|
|
ret = LDAP_get_string_value(db, msg, "modifiersName", &dn);
|
|
if (ret == 0) {
|
|
LDAP_dn2principal(context, db, dn, &ent->entry.modified_by->principal);
|
|
free(dn);
|
|
} else {
|
|
free(ent->entry.modified_by);
|
|
ent->entry.modified_by = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
ent->entry.valid_start = malloc(sizeof(*ent->entry.valid_start));
|
|
if (ent->entry.valid_start == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidStart",
|
|
ent->entry.valid_start);
|
|
if (ret) {
|
|
/* OPTIONAL */
|
|
free(ent->entry.valid_start);
|
|
ent->entry.valid_start = NULL;
|
|
}
|
|
|
|
ent->entry.valid_end = malloc(sizeof(*ent->entry.valid_end));
|
|
if (ent->entry.valid_end == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidEnd",
|
|
ent->entry.valid_end);
|
|
if (ret) {
|
|
/* OPTIONAL */
|
|
free(ent->entry.valid_end);
|
|
ent->entry.valid_end = NULL;
|
|
}
|
|
|
|
ret = LDAP_get_integer_value(db, msg, "sambaKickoffTime", &tmp_time);
|
|
if (ret == 0) {
|
|
if (ent->entry.valid_end == NULL) {
|
|
ent->entry.valid_end = malloc(sizeof(*ent->entry.valid_end));
|
|
if (ent->entry.valid_end == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
}
|
|
*ent->entry.valid_end = tmp_time;
|
|
}
|
|
|
|
ent->entry.pw_end = malloc(sizeof(*ent->entry.pw_end));
|
|
if (ent->entry.pw_end == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ret = LDAP_get_generalized_time_value(db, msg, "krb5PasswordEnd",
|
|
ent->entry.pw_end);
|
|
if (ret) {
|
|
/* OPTIONAL */
|
|
free(ent->entry.pw_end);
|
|
ent->entry.pw_end = NULL;
|
|
}
|
|
|
|
ret = LDAP_get_integer_value(db, msg, "sambaPwdLastSet", &tmp_time);
|
|
if (ret == 0) {
|
|
time_t delta;
|
|
|
|
if (ent->entry.pw_end == NULL) {
|
|
ent->entry.pw_end = malloc(sizeof(*ent->entry.pw_end));
|
|
if (ent->entry.pw_end == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
delta = krb5_config_get_time_default(context, NULL,
|
|
365 * 24 * 60 * 60,
|
|
"kadmin",
|
|
"password_lifetime",
|
|
NULL);
|
|
*ent->entry.pw_end = tmp_time + delta;
|
|
}
|
|
|
|
ret = LDAP_get_integer_value(db, msg, "sambaPwdMustChange", &tmp_time);
|
|
if (ret == 0) {
|
|
if (ent->entry.pw_end == NULL) {
|
|
ent->entry.pw_end = malloc(sizeof(*ent->entry.pw_end));
|
|
if (ent->entry.pw_end == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
}
|
|
*ent->entry.pw_end = tmp_time;
|
|
}
|
|
|
|
/* OPTIONAL */
|
|
ret = LDAP_get_integer_value(db, msg, "sambaPwdLastSet", &tmp_time);
|
|
if (ret == 0)
|
|
hdb_entry_set_pw_change_time(context, &ent->entry, tmp_time);
|
|
|
|
{
|
|
int max_life;
|
|
|
|
ent->entry.max_life = malloc(sizeof(*ent->entry.max_life));
|
|
if (ent->entry.max_life == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ret = LDAP_get_integer_value(db, msg, "krb5MaxLife", &max_life);
|
|
if (ret) {
|
|
free(ent->entry.max_life);
|
|
ent->entry.max_life = NULL;
|
|
} else
|
|
*ent->entry.max_life = max_life;
|
|
}
|
|
|
|
{
|
|
int max_renew;
|
|
|
|
ent->entry.max_renew = malloc(sizeof(*ent->entry.max_renew));
|
|
if (ent->entry.max_renew == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "malloc: out of memory");
|
|
goto out;
|
|
}
|
|
ret = LDAP_get_integer_value(db, msg, "krb5MaxRenew", &max_renew);
|
|
if (ret) {
|
|
free(ent->entry.max_renew);
|
|
ent->entry.max_renew = NULL;
|
|
} else
|
|
*ent->entry.max_renew = max_renew;
|
|
}
|
|
|
|
ret = LDAP_get_integer_value(db, msg, "krb5KDCFlags", &tmp);
|
|
if (ret)
|
|
tmp = 0;
|
|
|
|
ent->entry.flags = int2HDBFlags(tmp);
|
|
|
|
/* Try and find Samba flags to put into the mix */
|
|
ret = LDAP_get_string_value(db, msg, "sambaAcctFlags", &samba_acct_flags);
|
|
if (ret == 0) {
|
|
/* parse the [UXW...] string:
|
|
|
|
'N' No password
|
|
'D' Disabled
|
|
'H' Homedir required
|
|
'T' Temp account.
|
|
'U' User account (normal)
|
|
'M' MNS logon user account - what is this ?
|
|
'W' Workstation account
|
|
'S' Server account
|
|
'L' Locked account
|
|
'X' No Xpiry on password
|
|
'I' Interdomain trust account
|
|
|
|
*/
|
|
|
|
int i;
|
|
int flags_len = strlen(samba_acct_flags);
|
|
|
|
if (flags_len < 2)
|
|
goto out2;
|
|
|
|
if (samba_acct_flags[0] != '['
|
|
|| samba_acct_flags[flags_len - 1] != ']')
|
|
goto out2;
|
|
|
|
/* Allow forwarding */
|
|
if (samba_forwardable)
|
|
ent->entry.flags.forwardable = TRUE;
|
|
|
|
for (i=0; i < flags_len; i++) {
|
|
switch (samba_acct_flags[i]) {
|
|
case ' ':
|
|
case '[':
|
|
case ']':
|
|
break;
|
|
case 'N':
|
|
/* how to handle no password in kerberos? */
|
|
break;
|
|
case 'D':
|
|
ent->entry.flags.invalid = TRUE;
|
|
break;
|
|
case 'H':
|
|
break;
|
|
case 'T':
|
|
/* temp duplicate */
|
|
ent->entry.flags.invalid = TRUE;
|
|
break;
|
|
case 'U':
|
|
ent->entry.flags.client = TRUE;
|
|
break;
|
|
case 'M':
|
|
break;
|
|
case 'W':
|
|
case 'S':
|
|
ent->entry.flags.server = TRUE;
|
|
ent->entry.flags.client = TRUE;
|
|
break;
|
|
case 'L':
|
|
ent->entry.flags.invalid = TRUE;
|
|
break;
|
|
case 'X':
|
|
if (ent->entry.pw_end) {
|
|
free(ent->entry.pw_end);
|
|
ent->entry.pw_end = NULL;
|
|
}
|
|
break;
|
|
case 'I':
|
|
ent->entry.flags.server = TRUE;
|
|
ent->entry.flags.client = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
out2:
|
|
free(samba_acct_flags);
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
if (unparsed_name)
|
|
free(unparsed_name);
|
|
|
|
if (ret)
|
|
hdb_free_entry(context, ent);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_close(krb5_context context, HDB * db)
|
|
{
|
|
if (HDB2LDAP(db)) {
|
|
ldap_unbind_ext(HDB2LDAP(db), NULL, NULL);
|
|
((struct hdbldapdb *)db->hdb_db)->h_lp = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_lock(krb5_context context, HDB * db, int operation)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_unlock(krb5_context context, HDB * db)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_seq(krb5_context context, HDB * db, unsigned flags, hdb_entry_ex * entry)
|
|
{
|
|
int msgid, rc, parserc;
|
|
krb5_error_code ret;
|
|
LDAPMessage *e;
|
|
|
|
msgid = HDB2MSGID(db);
|
|
if (msgid < 0)
|
|
return HDB_ERR_NOENTRY;
|
|
|
|
do {
|
|
rc = ldap_result(HDB2LDAP(db), msgid, LDAP_MSG_ONE, NULL, &e);
|
|
switch (rc) {
|
|
case LDAP_RES_SEARCH_REFERENCE:
|
|
ldap_msgfree(e);
|
|
ret = 0;
|
|
break;
|
|
case LDAP_RES_SEARCH_ENTRY:
|
|
/* We have an entry. Parse it. */
|
|
ret = LDAP_message2entry(context, db, e, flags, entry);
|
|
ldap_msgfree(e);
|
|
break;
|
|
case LDAP_RES_SEARCH_RESULT:
|
|
/* We're probably at the end of the results. If not, abandon. */
|
|
parserc =
|
|
ldap_parse_result(HDB2LDAP(db), e, NULL, NULL, NULL,
|
|
NULL, NULL, 1);
|
|
ret = HDB_ERR_NOENTRY;
|
|
if (parserc != LDAP_SUCCESS
|
|
&& parserc != LDAP_MORE_RESULTS_TO_RETURN) {
|
|
krb5_set_error_message(context, ret, "ldap_parse_result: %s",
|
|
ldap_err2string(parserc));
|
|
ldap_abandon_ext(HDB2LDAP(db), msgid, NULL, NULL);
|
|
}
|
|
HDBSETMSGID(db, -1);
|
|
break;
|
|
case LDAP_SERVER_DOWN:
|
|
ldap_msgfree(e);
|
|
LDAP_close(context, db);
|
|
HDBSETMSGID(db, -1);
|
|
ret = ENETDOWN;
|
|
break;
|
|
default:
|
|
/* Some unspecified error (timeout?). Abandon. */
|
|
ldap_msgfree(e);
|
|
ldap_abandon_ext(HDB2LDAP(db), msgid, NULL, NULL);
|
|
ret = HDB_ERR_NOENTRY;
|
|
HDBSETMSGID(db, -1);
|
|
break;
|
|
}
|
|
} while (rc == LDAP_RES_SEARCH_REFERENCE);
|
|
|
|
if (ret == 0) {
|
|
if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
|
|
ret = hdb_unseal_keys(context, db, &entry->entry);
|
|
if (ret)
|
|
hdb_free_entry(context, entry);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_firstkey(krb5_context context, HDB *db, unsigned flags,
|
|
hdb_entry_ex *entry)
|
|
{
|
|
krb5_error_code ret;
|
|
int msgid;
|
|
|
|
ret = LDAP__connect(context, db);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ldap_search_ext(HDB2LDAP(db), HDB2BASE(db),
|
|
LDAP_SCOPE_SUBTREE,
|
|
"(|(objectClass=krb5Principal)(objectClass=sambaSamAccount))",
|
|
krb5kdcentry_attrs, 0,
|
|
NULL, NULL, NULL, 0, &msgid);
|
|
if (msgid < 0)
|
|
return HDB_ERR_NOENTRY;
|
|
|
|
HDBSETMSGID(db, msgid);
|
|
|
|
return LDAP_seq(context, db, flags, entry);
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_nextkey(krb5_context context, HDB * db, unsigned flags,
|
|
hdb_entry_ex * entry)
|
|
{
|
|
return LDAP_seq(context, db, flags, entry);
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP__connect(krb5_context context, HDB * db)
|
|
{
|
|
int rc, version = LDAP_VERSION3;
|
|
/*
|
|
* Empty credentials to do a SASL bind with LDAP. Note that empty
|
|
* different from NULL credentials. If you provide NULL
|
|
* credentials instead of empty credentials you will get a SASL
|
|
* bind in progress message.
|
|
*/
|
|
struct berval bv = { 0, "" };
|
|
|
|
if (HDB2LDAP(db)) {
|
|
/* connection has been opened. ping server. */
|
|
struct sockaddr_un addr;
|
|
socklen_t len = sizeof(addr);
|
|
int sd;
|
|
|
|
if (ldap_get_option(HDB2LDAP(db), LDAP_OPT_DESC, &sd) == 0 &&
|
|
getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
|
|
/* the other end has died. reopen. */
|
|
LDAP_close(context, db);
|
|
}
|
|
}
|
|
|
|
if (HDB2LDAP(db) != NULL) /* server is UP */
|
|
return 0;
|
|
|
|
rc = ldap_initialize(&((struct hdbldapdb *)db->hdb_db)->h_lp, HDB2URL(db));
|
|
if (rc != LDAP_SUCCESS) {
|
|
krb5_set_error_message(context, HDB_ERR_NOENTRY, "ldap_initialize: %s",
|
|
ldap_err2string(rc));
|
|
return HDB_ERR_NOENTRY;
|
|
}
|
|
|
|
rc = ldap_set_option(HDB2LDAP(db), LDAP_OPT_PROTOCOL_VERSION,
|
|
(const void *)&version);
|
|
if (rc != LDAP_SUCCESS) {
|
|
krb5_set_error_message(context, HDB_ERR_BADVERSION,
|
|
"ldap_set_option: %s", ldap_err2string(rc));
|
|
LDAP_close(context, db);
|
|
return HDB_ERR_BADVERSION;
|
|
}
|
|
|
|
rc = ldap_sasl_bind_s(HDB2LDAP(db), NULL, "EXTERNAL", &bv,
|
|
NULL, NULL, NULL);
|
|
if (rc != LDAP_SUCCESS) {
|
|
krb5_set_error_message(context, HDB_ERR_BADVERSION,
|
|
"ldap_sasl_bind_s: %s", ldap_err2string(rc));
|
|
LDAP_close(context, db);
|
|
return HDB_ERR_BADVERSION;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_open(krb5_context context, HDB * db, int flags, mode_t mode)
|
|
{
|
|
/* Not the right place for this. */
|
|
#ifdef HAVE_SIGACTION
|
|
struct sigaction sa;
|
|
|
|
sa.sa_flags = 0;
|
|
sa.sa_handler = SIG_IGN;
|
|
sigemptyset(&sa.sa_mask);
|
|
|
|
sigaction(SIGPIPE, &sa, NULL);
|
|
#else
|
|
signal(SIGPIPE, SIG_IGN);
|
|
#endif /* HAVE_SIGACTION */
|
|
|
|
return LDAP__connect(context, db);
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_fetch(krb5_context context, HDB * db, krb5_const_principal principal,
|
|
unsigned flags, hdb_entry_ex * entry)
|
|
{
|
|
LDAPMessage *msg, *e;
|
|
krb5_error_code ret;
|
|
|
|
ret = LDAP_principal2message(context, db, principal, &msg);
|
|
if (ret)
|
|
return ret;
|
|
|
|
e = ldap_first_entry(HDB2LDAP(db), msg);
|
|
if (e == NULL) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
}
|
|
|
|
ret = LDAP_message2entry(context, db, e, flags, entry);
|
|
if (ret == 0) {
|
|
if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
|
|
ret = hdb_unseal_keys(context, db, &entry->entry);
|
|
if (ret)
|
|
hdb_free_entry(context, entry);
|
|
}
|
|
}
|
|
|
|
out:
|
|
ldap_msgfree(msg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_store(krb5_context context, HDB * db, unsigned flags,
|
|
hdb_entry_ex * entry)
|
|
{
|
|
LDAPMod **mods = NULL;
|
|
krb5_error_code ret;
|
|
const char *errfn;
|
|
int rc;
|
|
LDAPMessage *msg = NULL, *e = NULL;
|
|
char *dn = NULL, *name = NULL;
|
|
|
|
ret = LDAP_principal2message(context, db, entry->entry.principal, &msg);
|
|
if (ret == 0)
|
|
e = ldap_first_entry(HDB2LDAP(db), msg);
|
|
|
|
ret = krb5_unparse_name(context, entry->entry.principal, &name);
|
|
if (ret) {
|
|
free(name);
|
|
return ret;
|
|
}
|
|
|
|
ret = hdb_seal_keys(context, db, &entry->entry);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* turn new entry into LDAPMod array */
|
|
ret = LDAP_entry2mods(context, db, entry, e, &mods);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (e == NULL) {
|
|
ret = asprintf(&dn, "krb5PrincipalName=%s,%s", name, HDB2CREATE(db));
|
|
if (ret < 0) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, "asprintf: out of memory");
|
|
goto out;
|
|
}
|
|
} else if (flags & HDB_F_REPLACE) {
|
|
/* Entry exists, and we're allowed to replace it. */
|
|
dn = ldap_get_dn(HDB2LDAP(db), e);
|
|
} else {
|
|
/* Entry exists, but we're not allowed to replace it. Bail. */
|
|
ret = HDB_ERR_EXISTS;
|
|
goto out;
|
|
}
|
|
|
|
/* write entry into directory */
|
|
if (e == NULL) {
|
|
/* didn't exist before */
|
|
rc = ldap_add_ext_s(HDB2LDAP(db), dn, mods, NULL, NULL );
|
|
errfn = "ldap_add_ext_s";
|
|
} else {
|
|
/* already existed, send deltas only */
|
|
rc = ldap_modify_ext_s(HDB2LDAP(db), dn, mods, NULL, NULL );
|
|
errfn = "ldap_modify_ext_s";
|
|
}
|
|
|
|
if (check_ldap(context, db, rc)) {
|
|
char *ld_error = NULL;
|
|
ldap_get_option(HDB2LDAP(db), LDAP_OPT_ERROR_STRING,
|
|
&ld_error);
|
|
ret = HDB_ERR_CANT_LOCK_DB;
|
|
krb5_set_error_message(context, ret, "%s: %s (DN=%s) %s: %s",
|
|
errfn, name, dn, ldap_err2string(rc), ld_error);
|
|
} else
|
|
ret = 0;
|
|
|
|
out:
|
|
/* free stuff */
|
|
if (dn)
|
|
free(dn);
|
|
if (msg)
|
|
ldap_msgfree(msg);
|
|
if (mods)
|
|
ldap_mods_free(mods, 1);
|
|
if (name)
|
|
free(name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_remove(krb5_context context, HDB *db, krb5_const_principal principal)
|
|
{
|
|
krb5_error_code ret;
|
|
LDAPMessage *msg, *e;
|
|
char *dn = NULL;
|
|
int rc, limit = LDAP_NO_LIMIT;
|
|
|
|
ret = LDAP_principal2message(context, db, principal, &msg);
|
|
if (ret)
|
|
goto out;
|
|
|
|
e = ldap_first_entry(HDB2LDAP(db), msg);
|
|
if (e == NULL) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
}
|
|
|
|
dn = ldap_get_dn(HDB2LDAP(db), e);
|
|
if (dn == NULL) {
|
|
ret = HDB_ERR_NOENTRY;
|
|
goto out;
|
|
}
|
|
|
|
rc = ldap_set_option(HDB2LDAP(db), LDAP_OPT_SIZELIMIT, (const void *)&limit);
|
|
if (rc != LDAP_SUCCESS) {
|
|
ret = HDB_ERR_BADVERSION;
|
|
krb5_set_error_message(context, ret, "ldap_set_option: %s",
|
|
ldap_err2string(rc));
|
|
goto out;
|
|
}
|
|
|
|
rc = ldap_delete_ext_s(HDB2LDAP(db), dn, NULL, NULL );
|
|
if (check_ldap(context, db, rc)) {
|
|
ret = HDB_ERR_CANT_LOCK_DB;
|
|
krb5_set_error_message(context, ret, "ldap_delete_ext_s: %s",
|
|
ldap_err2string(rc));
|
|
} else
|
|
ret = 0;
|
|
|
|
out:
|
|
if (dn != NULL)
|
|
free(dn);
|
|
if (msg != NULL)
|
|
ldap_msgfree(msg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
LDAP_destroy(krb5_context context, HDB * db)
|
|
{
|
|
krb5_error_code ret;
|
|
|
|
LDAP_close(context, db);
|
|
|
|
ret = hdb_clear_master_key(context, db);
|
|
if (HDB2BASE(db))
|
|
free(HDB2BASE(db));
|
|
if (HDB2CREATE(db))
|
|
free(HDB2CREATE(db));
|
|
if (HDB2URL(db))
|
|
free(HDB2URL(db));
|
|
if (db->hdb_name)
|
|
free(db->hdb_name);
|
|
free(db->hdb_db);
|
|
free(db);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
hdb_ldap_common(krb5_context context,
|
|
HDB ** db,
|
|
const char *search_base,
|
|
const char *url)
|
|
{
|
|
struct hdbldapdb *h;
|
|
const char *create_base = NULL;
|
|
|
|
if (search_base == NULL && search_base[0] == '\0') {
|
|
krb5_set_error_message(context, ENOMEM, "ldap search base not configured");
|
|
return ENOMEM; /* XXX */
|
|
}
|
|
|
|
if (structural_object == NULL) {
|
|
const char *p;
|
|
|
|
p = krb5_config_get_string(context, NULL, "kdc",
|
|
"hdb-ldap-structural-object", NULL);
|
|
if (p == NULL)
|
|
p = default_structural_object;
|
|
structural_object = strdup(p);
|
|
if (structural_object == NULL) {
|
|
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
samba_forwardable =
|
|
krb5_config_get_bool_default(context, NULL, TRUE,
|
|
"kdc", "hdb-samba-forwardable", NULL);
|
|
|
|
*db = calloc(1, sizeof(**db));
|
|
if (*db == NULL) {
|
|
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
memset(*db, 0, sizeof(**db));
|
|
|
|
h = calloc(1, sizeof(*h));
|
|
if (h == NULL) {
|
|
free(*db);
|
|
*db = NULL;
|
|
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
(*db)->hdb_db = h;
|
|
|
|
/* XXX */
|
|
if (asprintf(&(*db)->hdb_name, "ldap:%s", search_base) == -1) {
|
|
LDAP_destroy(context, *db);
|
|
*db = NULL;
|
|
krb5_set_error_message(context, ENOMEM, "strdup: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
|
|
h->h_url = strdup(url);
|
|
h->h_base = strdup(search_base);
|
|
if (h->h_url == NULL || h->h_base == NULL) {
|
|
LDAP_destroy(context, *db);
|
|
*db = NULL;
|
|
krb5_set_error_message(context, ENOMEM, "strdup: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
|
|
create_base = krb5_config_get_string(context, NULL, "kdc",
|
|
"hdb-ldap-create-base", NULL);
|
|
if (create_base == NULL)
|
|
create_base = h->h_base;
|
|
|
|
h->h_createbase = strdup(create_base);
|
|
if (h->h_createbase == NULL) {
|
|
LDAP_destroy(context, *db);
|
|
*db = NULL;
|
|
krb5_set_error_message(context, ENOMEM, "strdup: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
|
|
(*db)->hdb_master_key_set = 0;
|
|
(*db)->hdb_openp = 0;
|
|
(*db)->hdb_capability_flags = 0;
|
|
(*db)->hdb_open = LDAP_open;
|
|
(*db)->hdb_close = LDAP_close;
|
|
(*db)->hdb_fetch = LDAP_fetch;
|
|
(*db)->hdb_store = LDAP_store;
|
|
(*db)->hdb_remove = LDAP_remove;
|
|
(*db)->hdb_firstkey = LDAP_firstkey;
|
|
(*db)->hdb_nextkey = LDAP_nextkey;
|
|
(*db)->hdb_lock = LDAP_lock;
|
|
(*db)->hdb_unlock = LDAP_unlock;
|
|
(*db)->hdb_rename = NULL;
|
|
(*db)->hdb__get = NULL;
|
|
(*db)->hdb__put = NULL;
|
|
(*db)->hdb__del = NULL;
|
|
(*db)->hdb_destroy = LDAP_destroy;
|
|
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
hdb_ldap_create(krb5_context context, HDB ** db, const char *arg)
|
|
{
|
|
return hdb_ldap_common(context, db, arg, "ldapi:///");
|
|
}
|
|
|
|
krb5_error_code
|
|
hdb_ldapi_create(krb5_context context, HDB ** db, const char *arg)
|
|
{
|
|
krb5_error_code ret;
|
|
char *search_base, *p;
|
|
|
|
asprintf(&p, "ldapi:%s", arg);
|
|
if (p == NULL) {
|
|
*db = NULL;
|
|
krb5_set_error_message(context, ENOMEM, "out of memory");
|
|
return ENOMEM;
|
|
}
|
|
search_base = strchr(p + strlen("ldapi://"), ':');
|
|
if (search_base == NULL) {
|
|
*db = NULL;
|
|
krb5_set_error_message(context, HDB_ERR_BADVERSION,
|
|
"search base missing");
|
|
return HDB_ERR_BADVERSION;
|
|
}
|
|
*search_base = '\0';
|
|
search_base++;
|
|
|
|
ret = hdb_ldap_common(context, db, search_base, p);
|
|
free(p);
|
|
return ret;
|
|
}
|
|
|
|
#ifdef OPENLDAP_MODULE
|
|
|
|
struct hdb_so_method hdb_ldap_interface = {
|
|
HDB_INTERFACE_VERSION,
|
|
"ldap",
|
|
hdb_ldap_create
|
|
};
|
|
|
|
struct hdb_so_method hdb_ldapi_interface = {
|
|
HDB_INTERFACE_VERSION,
|
|
"ldapi",
|
|
hdb_ldapi_create
|
|
};
|
|
|
|
#endif
|
|
|
|
#endif /* OPENLDAP */
|