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-rw-r--r--source4/heimdal/kdc/524.c395
-rw-r--r--source4/heimdal/kdc/default_config.c61
-rw-r--r--source4/heimdal/kdc/headers.h101
-rw-r--r--source4/heimdal/kdc/kaserver.c908
-rw-r--r--source4/heimdal/kdc/kdc-protos.h68
-rw-r--r--source4/heimdal/kdc/kdc.h81
-rw-r--r--source4/heimdal/kdc/kdc_locl.h154
-rw-r--r--source4/heimdal/kdc/kerberos4.c783
-rw-r--r--source4/heimdal/kdc/kerberos5.c2422
-rw-r--r--source4/heimdal/kdc/log.c89
-rw-r--r--source4/heimdal/kdc/misc.c84
-rwxr-xr-xsource4/heimdal/kdc/pkinit.c1607
-rw-r--r--source4/heimdal/kdc/process.c117
-rw-r--r--source4/heimdal/kdc/rx.h79
14 files changed, 6949 insertions, 0 deletions
diff --git a/source4/heimdal/kdc/524.c b/source4/heimdal/kdc/524.c
new file mode 100644
index 0000000000..497539b2e0
--- /dev/null
+++ b/source4/heimdal/kdc/524.c
@@ -0,0 +1,395 @@
+/*
+ * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+RCSID("$Id: 524.c,v 1.34 2005/06/30 01:47:35 lha Exp $");
+
+#include <krb5-v4compat.h>
+
+/*
+ * fetch the server from `t', returning the name in malloced memory in
+ * `spn' and the entry itself in `server'
+ */
+
+static krb5_error_code
+fetch_server (krb5_context context,
+ krb5_kdc_configuration *config,
+ const Ticket *t,
+ char **spn,
+ hdb_entry **server,
+ const char *from)
+{
+ krb5_error_code ret;
+ krb5_principal sprinc;
+
+ ret = _krb5_principalname2krb5_principal(&sprinc, t->sname, t->realm);
+ if (ret) {
+ kdc_log(context, config, 0, "_krb5_principalname2krb5_principal: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ ret = krb5_unparse_name(context, sprinc, spn);
+ if (ret) {
+ krb5_free_principal(context, sprinc);
+ kdc_log(context, config, 0, "krb5_unparse_name: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ ret = _kdc_db_fetch(context, config, sprinc, HDB_ENT_TYPE_SERVER, server);
+ krb5_free_principal(context, sprinc);
+ if (ret) {
+ kdc_log(context, config, 0,
+ "Request to convert ticket from %s for unknown principal %s: %s",
+ from, *spn, krb5_get_err_text(context, ret));
+ if (ret == HDB_ERR_NOENTRY)
+ ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN;
+ return ret;
+ }
+ return 0;
+}
+
+static krb5_error_code
+log_524 (krb5_context context,
+ krb5_kdc_configuration *config,
+ const EncTicketPart *et,
+ const char *from,
+ const char *spn)
+{
+ krb5_principal client;
+ char *cpn;
+ krb5_error_code ret;
+
+ ret = _krb5_principalname2krb5_principal(&client, et->cname, et->crealm);
+ if (ret) {
+ kdc_log(context, config, 0, "_krb5_principalname2krb5_principal: %s",
+ krb5_get_err_text (context, ret));
+ return ret;
+ }
+ ret = krb5_unparse_name(context, client, &cpn);
+ if (ret) {
+ krb5_free_principal(context, client);
+ kdc_log(context, config, 0, "krb5_unparse_name: %s",
+ krb5_get_err_text (context, ret));
+ return ret;
+ }
+ kdc_log(context, config, 1, "524-REQ %s from %s for %s", cpn, from, spn);
+ free(cpn);
+ krb5_free_principal(context, client);
+ return 0;
+}
+
+static krb5_error_code
+verify_flags (krb5_context context,
+ krb5_kdc_configuration *config,
+ const EncTicketPart *et,
+ const char *spn)
+{
+ if(et->endtime < kdc_time){
+ kdc_log(context, config, 0, "Ticket expired (%s)", spn);
+ return KRB5KRB_AP_ERR_TKT_EXPIRED;
+ }
+ if(et->flags.invalid){
+ kdc_log(context, config, 0, "Ticket not valid (%s)", spn);
+ return KRB5KRB_AP_ERR_TKT_NYV;
+ }
+ return 0;
+}
+
+/*
+ * set the `et->caddr' to the most appropriate address to use, where
+ * `addr' is the address the request was received from.
+ */
+
+static krb5_error_code
+set_address (krb5_context context,
+ krb5_kdc_configuration *config,
+ EncTicketPart *et,
+ struct sockaddr *addr,
+ const char *from)
+{
+ krb5_error_code ret;
+ krb5_address *v4_addr;
+
+ v4_addr = malloc (sizeof(*v4_addr));
+ if (v4_addr == NULL)
+ return ENOMEM;
+
+ ret = krb5_sockaddr2address(context, addr, v4_addr);
+ if(ret) {
+ free (v4_addr);
+ kdc_log(context, config, 0, "Failed to convert address (%s)", from);
+ return ret;
+ }
+
+ if (et->caddr && !krb5_address_search (context, v4_addr, et->caddr)) {
+ kdc_log(context, config, 0, "Incorrect network address (%s)", from);
+ krb5_free_address(context, v4_addr);
+ free (v4_addr);
+ return KRB5KRB_AP_ERR_BADADDR;
+ }
+ if(v4_addr->addr_type == KRB5_ADDRESS_INET) {
+ /* we need to collapse the addresses in the ticket to a
+ single address; best guess is to use the address the
+ connection came from */
+
+ if (et->caddr != NULL) {
+ free_HostAddresses(et->caddr);
+ } else {
+ et->caddr = malloc (sizeof (*et->caddr));
+ if (et->caddr == NULL) {
+ krb5_free_address(context, v4_addr);
+ free(v4_addr);
+ return ENOMEM;
+ }
+ }
+ et->caddr->val = v4_addr;
+ et->caddr->len = 1;
+ } else {
+ krb5_free_address(context, v4_addr);
+ free(v4_addr);
+ }
+ return 0;
+}
+
+
+static krb5_error_code
+encrypt_v4_ticket(krb5_context context,
+ krb5_kdc_configuration *config,
+ void *buf,
+ size_t len,
+ krb5_keyblock *skey,
+ EncryptedData *reply)
+{
+ krb5_crypto crypto;
+ krb5_error_code ret;
+ ret = krb5_crypto_init(context, skey, ETYPE_DES_PCBC_NONE, &crypto);
+ if (ret) {
+ free(buf);
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+
+ ret = krb5_encrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_TICKET,
+ buf,
+ len,
+ 0,
+ reply);
+ krb5_crypto_destroy(context, crypto);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to encrypt data: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ return 0;
+}
+
+static krb5_error_code
+encode_524_response(krb5_context context,
+ krb5_kdc_configuration *config,
+ const char *spn, const EncTicketPart et,
+ const Ticket *t, hdb_entry *server,
+ EncryptedData *ticket, int *kvno)
+{
+ krb5_error_code ret;
+ int use_2b;
+ size_t len;
+
+ use_2b = krb5_config_get_bool(context, NULL, "kdc", "use_2b", spn, NULL);
+ if(use_2b) {
+ ASN1_MALLOC_ENCODE(EncryptedData,
+ ticket->cipher.data, ticket->cipher.length,
+ &t->enc_part, &len, ret);
+
+ if (ret) {
+ kdc_log(context, config, 0,
+ "Failed to encode v4 (2b) ticket (%s)", spn);
+ return ret;
+ }
+
+ ticket->etype = 0;
+ ticket->kvno = NULL;
+ *kvno = 213; /* 2b's use this magic kvno */
+ } else {
+ unsigned char buf[MAX_KTXT_LEN + 4 * 4];
+ Key *skey;
+
+ if (!config->enable_v4_cross_realm && strcmp (et.crealm, t->realm) != 0) {
+ kdc_log(context, config, 0, "524 cross-realm %s -> %s disabled", et.crealm,
+ t->realm);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ ret = _kdc_encode_v4_ticket(context, config,
+ buf + sizeof(buf) - 1, sizeof(buf),
+ &et, &t->sname, &len);
+ if(ret){
+ kdc_log(context, config, 0,
+ "Failed to encode v4 ticket (%s)", spn);
+ return ret;
+ }
+ ret = _kdc_get_des_key(context, server, TRUE, FALSE, &skey);
+ if(ret){
+ kdc_log(context, config, 0,
+ "no suitable DES key for server (%s)", spn);
+ return ret;
+ }
+ ret = encrypt_v4_ticket(context, config, buf + sizeof(buf) - len, len,
+ &skey->key, ticket);
+ if(ret){
+ kdc_log(context, config, 0,
+ "Failed to encrypt v4 ticket (%s)", spn);
+ return ret;
+ }
+ *kvno = server->kvno;
+ }
+
+ return 0;
+}
+
+/*
+ * process a 5->4 request, based on `t', and received `from, addr',
+ * returning the reply in `reply'
+ */
+
+krb5_error_code
+_kdc_do_524(krb5_context context,
+ krb5_kdc_configuration *config,
+ const Ticket *t, krb5_data *reply,
+ const char *from, struct sockaddr *addr)
+{
+ krb5_error_code ret = 0;
+ krb5_crypto crypto;
+ hdb_entry *server = NULL;
+ Key *skey;
+ krb5_data et_data;
+ EncTicketPart et;
+ EncryptedData ticket;
+ krb5_storage *sp;
+ char *spn = NULL;
+ unsigned char buf[MAX_KTXT_LEN + 4 * 4];
+ size_t len;
+ int kvno = 0;
+
+ if(!config->enable_524) {
+ ret = KRB5KDC_ERR_POLICY;
+ kdc_log(context, config, 0,
+ "Rejected ticket conversion request from %s", from);
+ goto out;
+ }
+
+ ret = fetch_server (context, config, t, &spn, &server, from);
+ if (ret) {
+ goto out;
+ }
+
+ ret = hdb_enctype2key(context, server, t->enc_part.etype, &skey);
+ if(ret){
+ kdc_log(context, config, 0,
+ "No suitable key found for server (%s) from %s", spn, from);
+ goto out;
+ }
+ ret = krb5_crypto_init(context, &skey->key, 0, &crypto);
+ if (ret) {
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ goto out;
+ }
+ ret = krb5_decrypt_EncryptedData (context,
+ crypto,
+ KRB5_KU_TICKET,
+ &t->enc_part,
+ &et_data);
+ krb5_crypto_destroy(context, crypto);
+ if(ret){
+ kdc_log(context, config, 0,
+ "Failed to decrypt ticket from %s for %s", from, spn);
+ goto out;
+ }
+ ret = krb5_decode_EncTicketPart(context, et_data.data, et_data.length,
+ &et, &len);
+ krb5_data_free(&et_data);
+ if(ret){
+ kdc_log(context, config, 0,
+ "Failed to decode ticket from %s for %s", from, spn);
+ goto out;
+ }
+
+ ret = log_524 (context, config, &et, from, spn);
+ if (ret) {
+ free_EncTicketPart(&et);
+ goto out;
+ }
+
+ ret = verify_flags (context, config, &et, spn);
+ if (ret) {
+ free_EncTicketPart(&et);
+ goto out;
+ }
+
+ ret = set_address (context, config, &et, addr, from);
+ if (ret) {
+ free_EncTicketPart(&et);
+ goto out;
+ }
+
+ ret = encode_524_response(context, config, spn, et, t,
+ server, &ticket, &kvno);
+ free_EncTicketPart(&et);
+
+ out:
+ /* make reply */
+ memset(buf, 0, sizeof(buf));
+ sp = krb5_storage_from_mem(buf, sizeof(buf));
+ krb5_store_int32(sp, ret);
+ if(ret == 0){
+ krb5_store_int32(sp, kvno);
+ krb5_store_data(sp, ticket.cipher);
+ /* Aargh! This is coded as a KTEXT_ST. */
+ krb5_storage_seek(sp, MAX_KTXT_LEN - ticket.cipher.length, SEEK_CUR);
+ krb5_store_int32(sp, 0); /* mbz */
+ free_EncryptedData(&ticket);
+ }
+ ret = krb5_storage_to_data(sp, reply);
+ reply->length = krb5_storage_seek(sp, 0, SEEK_CUR);
+ krb5_storage_free(sp);
+
+ if(spn)
+ free(spn);
+ if(server)
+ _kdc_free_ent (context, server);
+ return ret;
+}
diff --git a/source4/heimdal/kdc/default_config.c b/source4/heimdal/kdc/default_config.c
new file mode 100644
index 0000000000..5152fe9ab1
--- /dev/null
+++ b/source4/heimdal/kdc/default_config.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2005 Andrew Bartlett <abartlet@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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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 "kdc_locl.h"
+
+/*
+ * Setup some of the defaults for the KDC configuration.
+ *
+ * Note: Caller must also fill in:
+ * - db
+ * - num_db
+ * - logf
+ *
+*/
+
+void
+krb5_kdc_default_config(krb5_kdc_configuration *config)
+{
+ config->require_preauth = TRUE;
+ config->kdc_warn_pwexpire = -1;
+ config->encode_as_rep_as_tgs_rep = FALSE; /* bug compatibility */
+ config->check_ticket_addresses = TRUE;
+ config->allow_null_ticket_addresses = TRUE;
+ config->allow_anonymous = FALSE;
+ config->trpolicy = TRPOLICY_ALWAYS_CHECK;
+ config->enable_v4 = FALSE;
+ config->enable_kaserver = FALSE;
+ config->enable_524 = FALSE; /* overriden by enable_v4 in configure()) */
+ config->enable_v4_cross_realm = FALSE;
+ config->enable_pkinit = FALSE;
+ config->enable_pkinit_princ_in_cert = TRUE;
+ config->db = NULL;
+ config->num_db = 0;
+ config->logf = NULL;
+}
diff --git a/source4/heimdal/kdc/headers.h b/source4/heimdal/kdc/headers.h
new file mode 100644
index 0000000000..86f162aa94
--- /dev/null
+++ b/source4/heimdal/kdc/headers.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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.
+ */
+
+/*
+ * $Id: headers.h,v 1.16 2005/04/24 13:49:00 lha Exp $
+ */
+
+#ifndef __HEADERS_H__
+#define __HEADERS_H__
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdarg.h>
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_NETINET_IN6_H
+#include <netinet/in6.h>
+#endif
+#ifdef HAVE_NETINET6_IN6_H
+#include <netinet6/in6.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif
+#ifdef HAVE_LIBUTIL_H
+#include <libutil.h>
+#endif
+#include <err.h>
+#include <roken.h>
+#include <getarg.h>
+#include <base64.h>
+#include <parse_units.h>
+#include <krb5.h>
+#include <krb5_locl.h>
+#include <hdb.h>
+#include <hdb_err.h>
+#include <der.h> /* copy_octet_string */
+
+#undef ALLOC
+#define ALLOC(X) ((X) = malloc(sizeof(*(X))))
+#undef ALLOC_SEQ
+#define ALLOC_SEQ(X, N) do { (X)->len = (N); \
+(X)->val = calloc((X)->len, sizeof(*(X)->val)); } while(0)
+
+#endif /* __HEADERS_H__ */
diff --git a/source4/heimdal/kdc/kaserver.c b/source4/heimdal/kdc/kaserver.c
new file mode 100644
index 0000000000..4a9bd87cb6
--- /dev/null
+++ b/source4/heimdal/kdc/kaserver.c
@@ -0,0 +1,908 @@
+/*
+ * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+RCSID("$Id: kaserver.c,v 1.30 2005/06/30 01:49:39 lha Exp $");
+
+#include <krb5-v4compat.h>
+#include <rx.h>
+
+#define KA_AUTHENTICATION_SERVICE 731
+#define KA_TICKET_GRANTING_SERVICE 732
+#define KA_MAINTENANCE_SERVICE 733
+
+#define AUTHENTICATE_OLD 1
+#define CHANGEPASSWORD 2
+#define GETTICKET_OLD 3
+#define SETPASSWORD 4
+#define SETFIELDS 5
+#define CREATEUSER 6
+#define DELETEUSER 7
+#define GETENTRY 8
+#define LISTENTRY 9
+#define GETSTATS 10
+#define DEBUG 11
+#define GETPASSWORD 12
+#define GETRANDOMKEY 13
+#define AUTHENTICATE 21
+#define AUTHENTICATE_V2 22
+#define GETTICKET 23
+
+/* XXX - Where do we get these? */
+
+#define RXGEN_OPCODE (-455)
+
+#define KADATABASEINCONSISTENT (180480L)
+#define KAEXIST (180481L)
+#define KAIO (180482L)
+#define KACREATEFAIL (180483L)
+#define KANOENT (180484L)
+#define KAEMPTY (180485L)
+#define KABADNAME (180486L)
+#define KABADINDEX (180487L)
+#define KANOAUTH (180488L)
+#define KAANSWERTOOLONG (180489L)
+#define KABADREQUEST (180490L)
+#define KAOLDINTERFACE (180491L)
+#define KABADARGUMENT (180492L)
+#define KABADCMD (180493L)
+#define KANOKEYS (180494L)
+#define KAREADPW (180495L)
+#define KABADKEY (180496L)
+#define KAUBIKINIT (180497L)
+#define KAUBIKCALL (180498L)
+#define KABADPROTOCOL (180499L)
+#define KANOCELLS (180500L)
+#define KANOCELL (180501L)
+#define KATOOMANYUBIKS (180502L)
+#define KATOOMANYKEYS (180503L)
+#define KABADTICKET (180504L)
+#define KAUNKNOWNKEY (180505L)
+#define KAKEYCACHEINVALID (180506L)
+#define KABADSERVER (180507L)
+#define KABADUSER (180508L)
+#define KABADCPW (180509L)
+#define KABADCREATE (180510L)
+#define KANOTICKET (180511L)
+#define KAASSOCUSER (180512L)
+#define KANOTSPECIAL (180513L)
+#define KACLOCKSKEW (180514L)
+#define KANORECURSE (180515L)
+#define KARXFAIL (180516L)
+#define KANULLPASSWORD (180517L)
+#define KAINTERNALERROR (180518L)
+#define KAPWEXPIRED (180519L)
+#define KAREUSED (180520L)
+#define KATOOSOON (180521L)
+#define KALOCKED (180522L)
+
+static void
+decode_rx_header (krb5_storage *sp,
+ struct rx_header *h)
+{
+ krb5_ret_int32(sp, &h->epoch);
+ krb5_ret_int32(sp, &h->connid);
+ krb5_ret_int32(sp, &h->callid);
+ krb5_ret_int32(sp, &h->seqno);
+ krb5_ret_int32(sp, &h->serialno);
+ krb5_ret_int8(sp, &h->type);
+ krb5_ret_int8(sp, &h->flags);
+ krb5_ret_int8(sp, &h->status);
+ krb5_ret_int8(sp, &h->secindex);
+ krb5_ret_int16(sp, &h->reserved);
+ krb5_ret_int16(sp, &h->serviceid);
+}
+
+static void
+encode_rx_header (struct rx_header *h,
+ krb5_storage *sp)
+{
+ krb5_store_int32(sp, h->epoch);
+ krb5_store_int32(sp, h->connid);
+ krb5_store_int32(sp, h->callid);
+ krb5_store_int32(sp, h->seqno);
+ krb5_store_int32(sp, h->serialno);
+ krb5_store_int8(sp, h->type);
+ krb5_store_int8(sp, h->flags);
+ krb5_store_int8(sp, h->status);
+ krb5_store_int8(sp, h->secindex);
+ krb5_store_int16(sp, h->reserved);
+ krb5_store_int16(sp, h->serviceid);
+}
+
+static void
+init_reply_header (struct rx_header *hdr,
+ struct rx_header *reply_hdr,
+ u_char type,
+ u_char flags)
+{
+ reply_hdr->epoch = hdr->epoch;
+ reply_hdr->connid = hdr->connid;
+ reply_hdr->callid = hdr->callid;
+ reply_hdr->seqno = 1;
+ reply_hdr->serialno = 1;
+ reply_hdr->type = type;
+ reply_hdr->flags = flags;
+ reply_hdr->status = 0;
+ reply_hdr->secindex = 0;
+ reply_hdr->reserved = 0;
+ reply_hdr->serviceid = hdr->serviceid;
+}
+
+static void
+make_error_reply (struct rx_header *hdr,
+ u_int32_t ret,
+ krb5_data *reply)
+
+{
+ krb5_storage *sp;
+ struct rx_header reply_hdr;
+
+ init_reply_header (hdr, &reply_hdr, HT_ABORT, HF_LAST);
+ sp = krb5_storage_emem();
+ encode_rx_header (&reply_hdr, sp);
+ krb5_store_int32(sp, ret);
+ krb5_storage_to_data (sp, reply);
+ krb5_storage_free (sp);
+}
+
+static krb5_error_code
+krb5_ret_xdr_data(krb5_storage *sp,
+ krb5_data *data)
+{
+ int ret;
+ int size;
+ ret = krb5_ret_int32(sp, &size);
+ if(ret)
+ return ret;
+ if(size < 0)
+ return ERANGE;
+ data->length = size;
+ if (size) {
+ u_char foo[4];
+ size_t pad = (4 - size % 4) % 4;
+
+ data->data = malloc(size);
+ if (data->data == NULL)
+ return ENOMEM;
+ ret = krb5_storage_read(sp, data->data, size);
+ if(ret != size)
+ return (ret < 0)? errno : KRB5_CC_END;
+ if (pad) {
+ ret = krb5_storage_read(sp, foo, pad);
+ if (ret != pad)
+ return (ret < 0)? errno : KRB5_CC_END;
+ }
+ } else
+ data->data = NULL;
+ return 0;
+}
+
+static krb5_error_code
+krb5_store_xdr_data(krb5_storage *sp,
+ krb5_data data)
+{
+ u_char zero[4] = {0, 0, 0, 0};
+ int ret;
+ size_t pad;
+
+ ret = krb5_store_int32(sp, data.length);
+ if(ret < 0)
+ return ret;
+ ret = krb5_storage_write(sp, data.data, data.length);
+ if(ret != data.length){
+ if(ret < 0)
+ return errno;
+ return KRB5_CC_END;
+ }
+ pad = (4 - data.length % 4) % 4;
+ if (pad) {
+ ret = krb5_storage_write(sp, zero, pad);
+ if (ret != pad) {
+ if (ret < 0)
+ return errno;
+ return KRB5_CC_END;
+ }
+ }
+ return 0;
+}
+
+
+static krb5_error_code
+create_reply_ticket (krb5_context context,
+ struct rx_header *hdr,
+ Key *skey,
+ char *name, char *instance, char *realm,
+ struct sockaddr_in *addr,
+ int life,
+ int kvno,
+ int32_t max_seq_len,
+ const char *sname, const char *sinstance,
+ u_int32_t challenge,
+ const char *label,
+ krb5_keyblock *key,
+ krb5_data *reply)
+{
+ krb5_data ticket;
+ krb5_keyblock session;
+ krb5_storage *sp;
+ krb5_data enc_data;
+ struct rx_header reply_hdr;
+ char zero[8];
+ size_t pad;
+ unsigned fyrtiosjuelva;
+
+ /* create the ticket */
+
+ krb5_generate_random_keyblock(context, ETYPE_DES_PCBC_NONE, &session);
+
+ _krb5_krb_create_ticket(context,
+ 0,
+ name,
+ instance,
+ realm,
+ addr->sin_addr.s_addr,
+ &session,
+ life,
+ kdc_time,
+ sname,
+ sinstance,
+ &skey->key,
+ &ticket);
+
+ /* create the encrypted part of the reply */
+ sp = krb5_storage_emem ();
+ krb5_generate_random_block(&fyrtiosjuelva, sizeof(fyrtiosjuelva));
+ fyrtiosjuelva &= 0xffffffff;
+ krb5_store_int32 (sp, fyrtiosjuelva);
+ krb5_store_int32 (sp, challenge);
+ krb5_storage_write (sp, session.keyvalue.data, 8);
+ krb5_free_keyblock_contents(context, &session);
+ krb5_store_int32 (sp, kdc_time);
+ krb5_store_int32 (sp, kdc_time + _krb5_krb_life_to_time (0, life));
+ krb5_store_int32 (sp, kvno);
+ krb5_store_int32 (sp, ticket.length);
+ krb5_store_stringz (sp, name);
+ krb5_store_stringz (sp, instance);
+#if 1 /* XXX - Why shouldn't the realm go here? */
+ krb5_store_stringz (sp, "");
+#else
+ krb5_store_stringz (sp, realm);
+#endif
+ krb5_store_stringz (sp, sname);
+ krb5_store_stringz (sp, sinstance);
+ krb5_storage_write (sp, ticket.data, ticket.length);
+ krb5_storage_write (sp, label, strlen(label));
+
+ /* pad to DES block */
+ memset (zero, 0, sizeof(zero));
+ pad = (8 - krb5_storage_seek (sp, 0, SEEK_CUR) % 8) % 8;
+ krb5_storage_write (sp, zero, pad);
+
+ krb5_storage_to_data (sp, &enc_data);
+ krb5_storage_free (sp);
+
+ if (enc_data.length > max_seq_len) {
+ krb5_data_free (&enc_data);
+ make_error_reply (hdr, KAANSWERTOOLONG, reply);
+ return 0;
+ }
+
+ /* encrypt it */
+ {
+ DES_key_schedule schedule;
+ DES_cblock deskey;
+
+ memcpy (&deskey, key->keyvalue.data, sizeof(deskey));
+ DES_set_key (&deskey, &schedule);
+ DES_pcbc_encrypt (enc_data.data,
+ enc_data.data,
+ enc_data.length,
+ &schedule,
+ &deskey,
+ DES_ENCRYPT);
+ memset (&schedule, 0, sizeof(schedule));
+ memset (&deskey, 0, sizeof(deskey));
+ }
+
+ /* create the reply packet */
+ init_reply_header (hdr, &reply_hdr, HT_DATA, HF_LAST);
+ sp = krb5_storage_emem ();
+ encode_rx_header (&reply_hdr, sp);
+ krb5_store_int32 (sp, max_seq_len);
+ krb5_store_xdr_data (sp, enc_data);
+ krb5_data_free (&enc_data);
+ krb5_storage_to_data (sp, reply);
+ krb5_storage_free (sp);
+ return 0;
+}
+
+static krb5_error_code
+unparse_auth_args (krb5_storage *sp,
+ char **name,
+ char **instance,
+ time_t *start_time,
+ time_t *end_time,
+ krb5_data *request,
+ int32_t *max_seq_len)
+{
+ krb5_data data;
+ int32_t tmp;
+
+ krb5_ret_xdr_data (sp, &data);
+ *name = malloc(data.length + 1);
+ if (*name == NULL)
+ return ENOMEM;
+ memcpy (*name, data.data, data.length);
+ (*name)[data.length] = '\0';
+ krb5_data_free (&data);
+
+ krb5_ret_xdr_data (sp, &data);
+ *instance = malloc(data.length + 1);
+ if (*instance == NULL) {
+ free (*name);
+ return ENOMEM;
+ }
+ memcpy (*instance, data.data, data.length);
+ (*instance)[data.length] = '\0';
+ krb5_data_free (&data);
+
+ krb5_ret_int32 (sp, &tmp);
+ *start_time = tmp;
+ krb5_ret_int32 (sp, &tmp);
+ *end_time = tmp;
+ krb5_ret_xdr_data (sp, request);
+ krb5_ret_int32 (sp, max_seq_len);
+ /* ignore the rest */
+ return 0;
+}
+
+static void
+do_authenticate (krb5_context context,
+ krb5_kdc_configuration *config,
+ struct rx_header *hdr,
+ krb5_storage *sp,
+ struct sockaddr_in *addr,
+ const char *from,
+ krb5_data *reply)
+{
+ krb5_error_code ret;
+ char *name = NULL;
+ char *instance = NULL;
+ time_t start_time;
+ time_t end_time;
+ krb5_data request;
+ int32_t max_seq_len;
+ hdb_entry *client_entry = NULL;
+ hdb_entry *server_entry = NULL;
+ Key *ckey = NULL;
+ Key *skey = NULL;
+ krb5_storage *reply_sp;
+ time_t max_life;
+ u_int8_t life;
+ int32_t chal;
+ char client_name[256];
+ char server_name[256];
+
+ krb5_data_zero (&request);
+
+ ret = unparse_auth_args (sp, &name, &instance, &start_time, &end_time,
+ &request, &max_seq_len);
+ if (ret != 0 || request.length < 8) {
+ make_error_reply (hdr, KABADREQUEST, reply);
+ goto out;
+ }
+
+ snprintf (client_name, sizeof(client_name), "%s.%s@%s",
+ name, instance, config->v4_realm);
+ snprintf (server_name, sizeof(server_name), "%s.%s@%s",
+ "krbtgt", config->v4_realm, config->v4_realm);
+
+ kdc_log(context, config, 0, "AS-REQ (kaserver) %s from %s for %s",
+ client_name, from, server_name);
+
+ ret = _kdc_db_fetch4 (context, config, name, instance,
+ config->v4_realm, HDB_ENT_TYPE_CLIENT,
+ &client_entry);
+ if (ret) {
+ kdc_log(context, config, 0, "Client not found in database: %s: %s",
+ client_name, krb5_get_err_text(context, ret));
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+
+ ret = _kdc_db_fetch4 (context, config, "krbtgt",
+ config->v4_realm, config->v4_realm,
+ HDB_ENT_TYPE_SERVER, &server_entry);
+ if (ret) {
+ kdc_log(context, config, 0, "Server not found in database: %s: %s",
+ server_name, krb5_get_err_text(context, ret));
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+
+ ret = _kdc_check_flags (context, config,
+ client_entry, client_name,
+ server_entry, server_name,
+ TRUE);
+ if (ret) {
+ make_error_reply (hdr, KAPWEXPIRED, reply);
+ goto out;
+ }
+
+ /* find a DES key */
+ ret = _kdc_get_des_key(context, client_entry, FALSE, TRUE, &ckey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for client");
+ make_error_reply (hdr, KANOKEYS, reply);
+ goto out;
+ }
+
+ /* find a DES key */
+ ret = _kdc_get_des_key(context, server_entry, TRUE, TRUE, &skey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for server");
+ make_error_reply (hdr, KANOKEYS, reply);
+ goto out;
+ }
+
+ {
+ DES_cblock key;
+ DES_key_schedule schedule;
+
+ /* try to decode the `request' */
+ memcpy (&key, ckey->key.keyvalue.data, sizeof(key));
+ DES_set_key (&key, &schedule);
+ DES_pcbc_encrypt (request.data,
+ request.data,
+ request.length,
+ &schedule,
+ &key,
+ DES_DECRYPT);
+ memset (&schedule, 0, sizeof(schedule));
+ memset (&key, 0, sizeof(key));
+ }
+
+ /* check for the magic label */
+ if (memcmp ((char *)request.data + 4, "gTGS", 4) != 0) {
+ kdc_log(context, config, 0, "preauth failed for %s", client_name);
+ make_error_reply (hdr, KABADREQUEST, reply);
+ goto out;
+ }
+
+ reply_sp = krb5_storage_from_mem (request.data, 4);
+ krb5_ret_int32 (reply_sp, &chal);
+ krb5_storage_free (reply_sp);
+
+ if (abs(chal - kdc_time) > context->max_skew) {
+ make_error_reply (hdr, KACLOCKSKEW, reply);
+ goto out;
+ }
+
+ /* life */
+ max_life = end_time - kdc_time;
+ /* end_time - kdc_time can sometimes be non-positive due to slight
+ time skew between client and server. Let's make sure it is postive */
+ if(max_life < 1)
+ max_life = 1;
+ if (client_entry->max_life)
+ max_life = min(max_life, *client_entry->max_life);
+ if (server_entry->max_life)
+ max_life = min(max_life, *server_entry->max_life);
+
+ life = krb_time_to_life(kdc_time, kdc_time + max_life);
+
+ create_reply_ticket (context,
+ hdr, skey,
+ name, instance, config->v4_realm,
+ addr, life, server_entry->kvno,
+ max_seq_len,
+ "krbtgt", config->v4_realm,
+ chal + 1, "tgsT",
+ &ckey->key, reply);
+
+ out:
+ if (request.length) {
+ memset (request.data, 0, request.length);
+ krb5_data_free (&request);
+ }
+ if (name)
+ free (name);
+ if (instance)
+ free (instance);
+ if (client_entry)
+ _kdc_free_ent (context, client_entry);
+ if (server_entry)
+ _kdc_free_ent (context, server_entry);
+}
+
+static krb5_error_code
+unparse_getticket_args (krb5_storage *sp,
+ int *kvno,
+ char **auth_domain,
+ krb5_data *ticket,
+ char **name,
+ char **instance,
+ krb5_data *times,
+ int32_t *max_seq_len)
+{
+ krb5_data data;
+ int32_t tmp;
+
+ krb5_ret_int32 (sp, &tmp);
+ *kvno = tmp;
+
+ krb5_ret_xdr_data (sp, &data);
+ *auth_domain = malloc(data.length + 1);
+ if (*auth_domain == NULL)
+ return ENOMEM;
+ memcpy (*auth_domain, data.data, data.length);
+ (*auth_domain)[data.length] = '\0';
+ krb5_data_free (&data);
+
+ krb5_ret_xdr_data (sp, ticket);
+
+ krb5_ret_xdr_data (sp, &data);
+ *name = malloc(data.length + 1);
+ if (*name == NULL) {
+ free (*auth_domain);
+ return ENOMEM;
+ }
+ memcpy (*name, data.data, data.length);
+ (*name)[data.length] = '\0';
+ krb5_data_free (&data);
+
+ krb5_ret_xdr_data (sp, &data);
+ *instance = malloc(data.length + 1);
+ if (*instance == NULL) {
+ free (*auth_domain);
+ free (*name);
+ return ENOMEM;
+ }
+ memcpy (*instance, data.data, data.length);
+ (*instance)[data.length] = '\0';
+ krb5_data_free (&data);
+
+ krb5_ret_xdr_data (sp, times);
+
+ krb5_ret_int32 (sp, max_seq_len);
+ /* ignore the rest */
+ return 0;
+}
+
+static void
+do_getticket (krb5_context context,
+ krb5_kdc_configuration *config,
+ struct rx_header *hdr,
+ krb5_storage *sp,
+ struct sockaddr_in *addr,
+ const char *from,
+ krb5_data *reply)
+{
+ krb5_error_code ret;
+ int kvno;
+ char *auth_domain = NULL;
+ krb5_data aticket;
+ char *name = NULL;
+ char *instance = NULL;
+ krb5_data times;
+ int32_t max_seq_len;
+ hdb_entry *server_entry = NULL;
+ hdb_entry *client_entry = NULL;
+ hdb_entry *krbtgt_entry = NULL;
+ Key *kkey = NULL;
+ Key *skey = NULL;
+ DES_cblock key;
+ DES_key_schedule schedule;
+ DES_cblock session;
+ time_t max_life;
+ int8_t life;
+ time_t start_time, end_time;
+ char server_name[256];
+ char client_name[256];
+ struct _krb5_krb_auth_data ad;
+
+ krb5_data_zero (&aticket);
+ krb5_data_zero (&times);
+
+ memset(&ad, 0, sizeof(ad));
+
+ unparse_getticket_args (sp, &kvno, &auth_domain, &aticket,
+ &name, &instance, &times, &max_seq_len);
+ if (times.length < 8) {
+ make_error_reply (hdr, KABADREQUEST, reply);
+ goto out;
+
+ }
+
+ snprintf (server_name, sizeof(server_name),
+ "%s.%s@%s", name, instance, config->v4_realm);
+
+ ret = _kdc_db_fetch4 (context, config, name, instance,
+ config->v4_realm, HDB_ENT_TYPE_SERVER,
+ &server_entry);
+ if (ret) {
+ kdc_log(context, config, 0, "Server not found in database: %s: %s",
+ server_name, krb5_get_err_text(context, ret));
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+
+ ret = _kdc_db_fetch4 (context, config, "krbtgt",
+ config->v4_realm, config->v4_realm,
+ HDB_ENT_TYPE_CLIENT, &krbtgt_entry);
+ if (ret) {
+ kdc_log(context, config, 0,
+ "Server not found in database: %s.%s@%s: %s",
+ "krbtgt", config->v4_realm, config->v4_realm,
+ krb5_get_err_text(context, ret));
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+
+ /* find a DES key */
+ ret = _kdc_get_des_key(context, krbtgt_entry, TRUE, TRUE, &kkey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for krbtgt");
+ make_error_reply (hdr, KANOKEYS, reply);
+ goto out;
+ }
+
+ /* find a DES key */
+ ret = _kdc_get_des_key(context, server_entry, TRUE, TRUE, &skey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for server");
+ make_error_reply (hdr, KANOKEYS, reply);
+ goto out;
+ }
+
+ /* decrypt the incoming ticket */
+ memcpy (&key, kkey->key.keyvalue.data, sizeof(key));
+
+ /* unpack the ticket */
+ {
+ char *sname = NULL;
+ char *sinstance = NULL;
+
+ ret = _krb5_krb_decomp_ticket(context, &aticket, &kkey->key,
+ config->v4_realm, &sname,
+ &sinstance, &ad);
+ if (ret) {
+ kdc_log(context, config, 0,
+ "kaserver: decomp failed for %s.%s with %d",
+ sname, sinstance, ret);
+ make_error_reply (hdr, KABADTICKET, reply);
+ goto out;
+ }
+
+ if (strcmp (sname, "krbtgt") != 0
+ || strcmp (sinstance, config->v4_realm) != 0) {
+ kdc_log(context, config, 0, "no TGT: %s.%s for %s.%s@%s",
+ sname, sinstance,
+ ad.pname, ad.pinst, ad.prealm);
+ make_error_reply (hdr, KABADTICKET, reply);
+ free(sname);
+ free(sinstance);
+ goto out;
+ }
+ free(sname);
+ free(sinstance);
+
+ if (kdc_time > _krb5_krb_life_to_time(ad.time_sec, ad.life)) {
+ kdc_log(context, config, 0, "TGT expired: %s.%s@%s",
+ ad.pname, ad.pinst, ad.prealm);
+ make_error_reply (hdr, KABADTICKET, reply);
+ goto out;
+ }
+ }
+
+ snprintf (client_name, sizeof(client_name),
+ "%s.%s@%s", ad.pname, ad.pinst, ad.prealm);
+
+ kdc_log(context, config, 0, "TGS-REQ (kaserver) %s from %s for %s",
+ client_name, from, server_name);
+
+ ret = _kdc_db_fetch4 (context, config,
+ ad.pname, ad.pinst, ad.prealm,
+ HDB_ENT_TYPE_CLIENT, &client_entry);
+ if(ret && ret != HDB_ERR_NOENTRY) {
+ kdc_log(context, config, 0,
+ "Client not found in database: (krb4) %s: %s",
+ client_name, krb5_get_err_text(context, ret));
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+ if (client_entry == NULL && strcmp(ad.prealm, config->v4_realm) == 0) {
+ kdc_log(context, config, 0,
+ "Local client not found in database: (krb4) "
+ "%s", client_name);
+ make_error_reply (hdr, KANOENT, reply);
+ goto out;
+ }
+
+ ret = _kdc_check_flags (context, config,
+ client_entry, client_name,
+ server_entry, server_name,
+ FALSE);
+ if (ret) {
+ make_error_reply (hdr, KAPWEXPIRED, reply);
+ goto out;
+ }
+
+ /* decrypt the times */
+ memcpy(&session, ad.session.keyvalue.data, sizeof(session));
+ DES_set_key (&session, &schedule);
+ DES_ecb_encrypt (times.data,
+ times.data,
+ &schedule,
+ DES_DECRYPT);
+ memset (&schedule, 0, sizeof(schedule));
+ memset (&session, 0, sizeof(session));
+
+ /* and extract them */
+ {
+ krb5_storage *tsp;
+ int32_t tmp;
+
+ tsp = krb5_storage_from_mem (times.data, times.length);
+ krb5_ret_int32 (tsp, &tmp);
+ start_time = tmp;
+ krb5_ret_int32 (tsp, &tmp);
+ end_time = tmp;
+ krb5_storage_free (tsp);
+ }
+
+ /* life */
+ max_life = end_time - kdc_time;
+ /* end_time - kdc_time can sometimes be non-positive due to slight
+ time skew between client and server. Let's make sure it is postive */
+ if(max_life < 1)
+ max_life = 1;
+ if (krbtgt_entry->max_life)
+ max_life = min(max_life, *krbtgt_entry->max_life);
+ if (server_entry->max_life)
+ max_life = min(max_life, *server_entry->max_life);
+ /* if this is a cross realm request, the client_entry will likely
+ be NULL */
+ if (client_entry && client_entry->max_life)
+ max_life = min(max_life, *client_entry->max_life);
+
+ life = _krb5_krb_time_to_life(kdc_time, kdc_time + max_life);
+
+ create_reply_ticket (context,
+ hdr, skey,
+ ad.pname, ad.pinst, ad.prealm,
+ addr, life, server_entry->kvno,
+ max_seq_len,
+ name, instance,
+ 0, "gtkt",
+ &ad.session, reply);
+
+ out:
+ _krb5_krb_free_auth_data(context, &ad);
+ if (aticket.length) {
+ memset (aticket.data, 0, aticket.length);
+ krb5_data_free (&aticket);
+ }
+ if (times.length) {
+ memset (times.data, 0, times.length);
+ krb5_data_free (&times);
+ }
+ if (auth_domain)
+ free (auth_domain);
+ if (name)
+ free (name);
+ if (instance)
+ free (instance);
+ if (krbtgt_entry)
+ _kdc_free_ent (context, krbtgt_entry);
+ if (server_entry)
+ _kdc_free_ent (context, server_entry);
+}
+
+krb5_error_code
+_kdc_do_kaserver(krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char *buf,
+ size_t len,
+ krb5_data *reply,
+ const char *from,
+ struct sockaddr_in *addr)
+{
+ krb5_error_code ret = 0;
+ struct rx_header hdr;
+ u_int32_t op;
+ krb5_storage *sp;
+
+ if (len < RX_HEADER_SIZE)
+ return -1;
+ sp = krb5_storage_from_mem (buf, len);
+
+ decode_rx_header (sp, &hdr);
+ buf += RX_HEADER_SIZE;
+ len -= RX_HEADER_SIZE;
+
+ switch (hdr.type) {
+ case HT_DATA :
+ break;
+ case HT_ACK :
+ case HT_BUSY :
+ case HT_ABORT :
+ case HT_ACKALL :
+ case HT_CHAL :
+ case HT_RESP :
+ case HT_DEBUG :
+ default:
+ /* drop */
+ goto out;
+ }
+
+
+ if (hdr.serviceid != KA_AUTHENTICATION_SERVICE
+ && hdr.serviceid != KA_TICKET_GRANTING_SERVICE) {
+ ret = -1;
+ goto out;
+ }
+
+ krb5_ret_int32(sp, &op);
+ switch (op) {
+ case AUTHENTICATE :
+ case AUTHENTICATE_V2 :
+ do_authenticate (context, config, &hdr, sp, addr, from, reply);
+ break;
+ case GETTICKET :
+ do_getticket (context, config, &hdr, sp, addr, from, reply);
+ break;
+ case AUTHENTICATE_OLD :
+ case CHANGEPASSWORD :
+ case GETTICKET_OLD :
+ case SETPASSWORD :
+ case SETFIELDS :
+ case CREATEUSER :
+ case DELETEUSER :
+ case GETENTRY :
+ case LISTENTRY :
+ case GETSTATS :
+ case DEBUG :
+ case GETPASSWORD :
+ case GETRANDOMKEY :
+ default :
+ make_error_reply (&hdr, RXGEN_OPCODE, reply);
+ break;
+ }
+
+out:
+ krb5_storage_free (sp);
+ return ret;
+}
diff --git a/source4/heimdal/kdc/kdc-protos.h b/source4/heimdal/kdc/kdc-protos.h
new file mode 100644
index 0000000000..5967f933f3
--- /dev/null
+++ b/source4/heimdal/kdc/kdc-protos.h
@@ -0,0 +1,68 @@
+/* This is a generated file */
+#ifndef __kdc_protos_h__
+#define __kdc_protos_h__
+
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+kdc_log (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/,
+ int /*level*/,
+ const char */*fmt*/,
+ ...);
+
+char*
+kdc_log_msg (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/,
+ int /*level*/,
+ const char */*fmt*/,
+ ...);
+
+char*
+kdc_log_msg_va (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/,
+ int /*level*/,
+ const char */*fmt*/,
+ va_list /*ap*/);
+
+void
+kdc_openlog (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/);
+
+void
+krb5_kdc_default_config (krb5_kdc_configuration */*config*/);
+
+int
+krb5_kdc_process_generic_request (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/,
+ unsigned char */*buf*/,
+ size_t /*len*/,
+ krb5_data */*reply*/,
+ krb5_boolean */*prependlength*/,
+ const char */*from*/,
+ struct sockaddr */*addr*/);
+
+int
+krb5_kdc_process_krb5_request (
+ krb5_context /*context*/,
+ krb5_kdc_configuration */*config*/,
+ unsigned char */*buf*/,
+ size_t /*len*/,
+ krb5_data */*reply*/,
+ const char */*from*/,
+ struct sockaddr */*addr*/);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __kdc_protos_h__ */
diff --git a/source4/heimdal/kdc/kdc.h b/source4/heimdal/kdc/kdc.h
new file mode 100644
index 0000000000..f186983cef
--- /dev/null
+++ b/source4/heimdal/kdc/kdc.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 1997-2003 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ *
+ * Copyright (c) 2005 Andrew Bartlett <abartlet@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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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.
+ */
+
+/*
+ * $Id: kdc.h,v 1.4 2005/06/30 01:50:42 lha Exp $
+ */
+
+#ifndef __KDC_H__
+#define __KDC_H__
+
+#include <krb5.h>
+
+enum krb5_kdc_trpolicy {
+ TRPOLICY_ALWAYS_CHECK,
+ TRPOLICY_ALLOW_PER_PRINCIPAL,
+ TRPOLICY_ALWAYS_HONOUR_REQUEST
+};
+
+typedef struct krb5_kdc_configuration {
+ krb5_boolean require_preauth; /* require preauth for all principals */
+ time_t kdc_warn_pwexpire; /* time before expiration to print a warning */
+
+ struct HDB **db;
+ int num_db;
+
+ krb5_boolean encode_as_rep_as_tgs_rep; /* bug compatibility */
+
+ krb5_boolean check_ticket_addresses;
+ krb5_boolean allow_null_ticket_addresses;
+ krb5_boolean allow_anonymous;
+ enum krb5_kdc_trpolicy trpolicy;
+
+ char *v4_realm;
+ krb5_boolean enable_v4;
+ krb5_boolean enable_kaserver;
+
+ krb5_boolean enable_524;
+ krb5_boolean enable_v4_cross_realm;
+
+ krb5_boolean enable_pkinit;
+ krb5_boolean enable_pkinit_princ_in_cert;
+
+ krb5_log_facility *logf;
+} krb5_kdc_configuration;
+
+#include <kdc-protos.h>
+
+#endif
diff --git a/source4/heimdal/kdc/kdc_locl.h b/source4/heimdal/kdc/kdc_locl.h
new file mode 100644
index 0000000000..d347c6080c
--- /dev/null
+++ b/source4/heimdal/kdc/kdc_locl.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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.
+ */
+
+/*
+ * $Id: kdc_locl.h,v 1.71 2005/07/01 15:36:16 lha Exp $
+ */
+
+#ifndef __KDC_LOCL_H__
+#define __KDC_LOCL_H__
+
+#include "headers.h"
+#include "kdc.h"
+
+extern sig_atomic_t exit_flag;
+extern size_t max_request;
+extern const char *port_str;
+extern krb5_addresses explicit_addresses;
+
+extern int enable_http;
+
+#define DETACH_IS_DEFAULT FALSE
+
+extern int detach_from_console;
+
+#define _PATH_KDC_CONF HDB_DB_DIR "/kdc.conf"
+#define DEFAULT_LOG_DEST "0-1/FILE:" HDB_DB_DIR "/kdc.log"
+
+extern struct timeval _kdc_now;
+#define kdc_time (_kdc_now.tv_sec)
+
+krb5_error_code
+_kdc_as_rep(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ*, krb5_data*, const char*, struct sockaddr*);
+
+krb5_kdc_configuration *
+configure(krb5_context context, int argc, char **argv);
+
+krb5_error_code
+_kdc_db_fetch(krb5_context, krb5_kdc_configuration *,
+ krb5_principal, enum hdb_ent_type, hdb_entry **);
+
+void
+_kdc_free_ent(krb5_context context, hdb_entry *);
+
+void
+loop(krb5_context context, krb5_kdc_configuration *config);
+
+krb5_error_code
+_kdc_tgs_rep (krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ*, krb5_data*, const char*, struct sockaddr *);
+
+krb5_error_code
+_kdc_check_flags(krb5_context context,
+ krb5_kdc_configuration *config,
+ hdb_entry *client, const char *client_name,
+ hdb_entry *server, const char *server_name,
+ krb5_boolean is_as_req);
+
+krb5_error_code
+_kdc_get_des_key(krb5_context context, hdb_entry*,
+ krb5_boolean, krb5_boolean, Key**);
+
+krb5_error_code
+_kdc_encode_v4_ticket(krb5_context context,
+ krb5_kdc_configuration *config,
+ void *buf, size_t len, const EncTicketPart *et,
+ const PrincipalName *service, size_t *size);
+krb5_error_code
+_kdc_do_524(krb5_context context,
+ krb5_kdc_configuration *config,
+ const Ticket *t, krb5_data *reply,
+ const char *from, struct sockaddr *addr);
+
+
+#ifdef PKINIT
+typedef struct pk_client_params pk_client_params;
+krb5_error_code _kdc_pk_initialize(krb5_context,
+ krb5_kdc_configuration *,
+ const char *,
+ const char *);
+krb5_error_code _kdc_pk_rd_padata(krb5_context, krb5_kdc_configuration *,
+ KDC_REQ *, PA_DATA *, pk_client_params **);
+krb5_error_code _kdc_pk_mk_pa_reply(krb5_context,
+ krb5_kdc_configuration *,
+ pk_client_params *,
+ const hdb_entry *,
+ const KDC_REQ *,
+ krb5_keyblock **,
+ METHOD_DATA *);
+krb5_error_code _kdc_pk_check_client(krb5_context,
+ krb5_kdc_configuration *,
+ krb5_principal,
+ const hdb_entry *,
+ pk_client_params *, char **);
+void _kdc_pk_free_client_param(krb5_context, pk_client_params *);
+#endif
+
+/*
+ * Kerberos 4
+ */
+
+krb5_error_code
+_kdc_db_fetch4 (krb5_context context,
+ krb5_kdc_configuration *config,
+ const char*, const char*, const char*, enum hdb_ent_type, hdb_entry**);
+
+krb5_error_code
+_kdc_do_version4 (krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char*, size_t, krb5_data*, const char*,
+ struct sockaddr_in*);
+int
+_kdc_maybe_version4(unsigned char*, int);
+
+krb5_error_code
+_kdc_do_kaserver (krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char*, size_t, krb5_data*,
+ const char*, struct sockaddr_in*);
+
+
+#endif /* __KDC_LOCL_H__ */
diff --git a/source4/heimdal/kdc/kerberos4.c b/source4/heimdal/kdc/kerberos4.c
new file mode 100644
index 0000000000..a81fbb7b59
--- /dev/null
+++ b/source4/heimdal/kdc/kerberos4.c
@@ -0,0 +1,783 @@
+/*
+ * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+#include <krb5-v4compat.h>
+
+RCSID("$Id: kerberos4.c,v 1.54 2005/06/30 01:51:43 lha Exp $");
+
+#ifndef swap32
+static u_int32_t
+swap32(u_int32_t x)
+{
+ return ((x << 24) & 0xff000000) |
+ ((x << 8) & 0xff0000) |
+ ((x >> 8) & 0xff00) |
+ ((x >> 24) & 0xff);
+}
+#endif /* swap32 */
+
+int
+_kdc_maybe_version4(unsigned char *buf, int len)
+{
+ return len > 0 && *buf == 4;
+}
+
+static void
+make_err_reply(krb5_context context, krb5_data *reply,
+ int code, const char *msg)
+{
+ _krb5_krb_cr_err_reply(context, "", "", "",
+ kdc_time, code, msg, reply);
+}
+
+static krb5_boolean
+valid_princ(krb5_context context,
+ void *funcctx,
+ krb5_principal princ)
+{
+ krb5_kdc_configuration *config = funcctx;
+ krb5_error_code ret;
+ char *s;
+ hdb_entry *ent;
+
+ ret = krb5_unparse_name(context, princ, &s);
+ if (ret)
+ return FALSE;
+ ret = _kdc_db_fetch(context, config, princ, HDB_ENT_TYPE_ANY, &ent);
+ if (ret) {
+ kdc_log(context, config, 7, "Lookup %s failed: %s", s,
+ krb5_get_err_text (context, ret));
+ free(s);
+ return FALSE;
+ }
+ kdc_log(context, config, 7, "Lookup %s succeeded", s);
+ free(s);
+ _kdc_free_ent(context, ent);
+ return TRUE;
+}
+
+krb5_error_code
+_kdc_db_fetch4(krb5_context context,
+ krb5_kdc_configuration *config,
+ const char *name, const char *instance, const char *realm,
+ enum hdb_ent_type ent_type,
+ hdb_entry **ent)
+{
+ krb5_principal p;
+ krb5_error_code ret;
+
+ ret = krb5_425_conv_principal_ext2(context, name, instance, realm,
+ valid_princ, config, 0, &p);
+ if(ret)
+ return ret;
+ ret = _kdc_db_fetch(context, config, p, ent_type, ent);
+ krb5_free_principal(context, p);
+ return ret;
+}
+
+#define RCHECK(X, L) if(X){make_err_reply(context, reply, KFAILURE, "Packet too short"); goto L;}
+
+/*
+ * Process the v4 request in `buf, len' (received from `addr'
+ * (with string `from').
+ * Return an error code and a reply in `reply'.
+ */
+
+krb5_error_code
+_kdc_do_version4(krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char *buf,
+ size_t len,
+ krb5_data *reply,
+ const char *from,
+ struct sockaddr_in *addr)
+{
+ krb5_storage *sp;
+ krb5_error_code ret;
+ hdb_entry *client = NULL, *server = NULL;
+ Key *ckey, *skey;
+ int8_t pvno;
+ int8_t msg_type;
+ int lsb;
+ char *name = NULL, *inst = NULL, *realm = NULL;
+ char *sname = NULL, *sinst = NULL;
+ int32_t req_time;
+ time_t max_life;
+ u_int8_t life;
+ char client_name[256];
+ char server_name[256];
+
+ if(!config->enable_v4) {
+ kdc_log(context, config, 0,
+ "Rejected version 4 request from %s", from);
+ make_err_reply(context, reply, KDC_GEN_ERR, "function not enabled");
+ return 0;
+ }
+
+ sp = krb5_storage_from_mem(buf, len);
+ RCHECK(krb5_ret_int8(sp, &pvno), out);
+ if(pvno != 4){
+ kdc_log(context, config, 0,
+ "Protocol version mismatch (krb4) (%d)", pvno);
+ make_err_reply(context, reply, KDC_PKT_VER, "protocol mismatch");
+ goto out;
+ }
+ RCHECK(krb5_ret_int8(sp, &msg_type), out);
+ lsb = msg_type & 1;
+ msg_type &= ~1;
+ switch(msg_type){
+ case AUTH_MSG_KDC_REQUEST: {
+ krb5_data ticket, cipher;
+ krb5_keyblock session;
+
+ krb5_data_zero(&ticket);
+ krb5_data_zero(&cipher);
+
+ RCHECK(krb5_ret_stringz(sp, &name), out1);
+ RCHECK(krb5_ret_stringz(sp, &inst), out1);
+ RCHECK(krb5_ret_stringz(sp, &realm), out1);
+ RCHECK(krb5_ret_int32(sp, &req_time), out1);
+ if(lsb)
+ req_time = swap32(req_time);
+ RCHECK(krb5_ret_int8(sp, &life), out1);
+ RCHECK(krb5_ret_stringz(sp, &sname), out1);
+ RCHECK(krb5_ret_stringz(sp, &sinst), out1);
+ snprintf (client_name, sizeof(client_name),
+ "%s.%s@%s", name, inst, realm);
+ snprintf (server_name, sizeof(server_name),
+ "%s.%s@%s", sname, sinst, config->v4_realm);
+
+ kdc_log(context, config, 0, "AS-REQ (krb4) %s from %s for %s",
+ client_name, from, server_name);
+
+ ret = _kdc_db_fetch4(context, config, name, inst, realm, HDB_ENT_TYPE_CLIENT, &client);
+ if(ret) {
+ kdc_log(context, config, 0, "Client not found in database: %s: %s",
+ client_name, krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN,
+ "principal unknown");
+ goto out1;
+ }
+ ret = _kdc_db_fetch4(context, config, sname, sinst,
+ config->v4_realm, HDB_ENT_TYPE_SERVER, &server);
+ if(ret){
+ kdc_log(context, config, 0, "Server not found in database: %s: %s",
+ server_name, krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN,
+ "principal unknown");
+ goto out1;
+ }
+
+ ret = _kdc_check_flags (context, config,
+ client, client_name,
+ server, server_name,
+ TRUE);
+ if (ret) {
+ /* good error code? */
+ make_err_reply(context, reply, KERB_ERR_NAME_EXP,
+ "operation not allowed");
+ goto out1;
+ }
+
+ /*
+ * There's no way to do pre-authentication in v4 and thus no
+ * good error code to return if preauthentication is required.
+ */
+
+ if (config->require_preauth
+ || client->flags.require_preauth
+ || server->flags.require_preauth) {
+ kdc_log(context, config, 0,
+ "Pre-authentication required for v4-request: "
+ "%s for %s",
+ client_name, server_name);
+ make_err_reply(context, reply, KERB_ERR_NULL_KEY,
+ "preauth required");
+ goto out1;
+ }
+
+ ret = _kdc_get_des_key(context, client, FALSE, FALSE, &ckey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for client");
+ make_err_reply(context, reply, KDC_NULL_KEY,
+ "no suitable DES key for client");
+ goto out1;
+ }
+
+#if 0
+ /* this is not necessary with the new code in libkrb */
+ /* find a properly salted key */
+ while(ckey->salt == NULL || ckey->salt->salt.length != 0)
+ ret = hdb_next_keytype2key(context, client, KEYTYPE_DES, &ckey);
+ if(ret){
+ kdc_log(context, config, 0, "No version-4 salted key in database -- %s.%s@%s",
+ name, inst, realm);
+ make_err_reply(context, reply, KDC_NULL_KEY,
+ "No version-4 salted key in database");
+ goto out1;
+ }
+#endif
+
+ ret = _kdc_get_des_key(context, server, TRUE, FALSE, &skey);
+ if(ret){
+ kdc_log(context, config, 0, "no suitable DES key for server");
+ /* XXX */
+ make_err_reply(context, reply, KDC_NULL_KEY,
+ "no suitable DES key for server");
+ goto out1;
+ }
+
+ max_life = _krb5_krb_life_to_time(0, life);
+ if(client->max_life)
+ max_life = min(max_life, *client->max_life);
+ if(server->max_life)
+ max_life = min(max_life, *server->max_life);
+
+ life = krb_time_to_life(kdc_time, kdc_time + max_life);
+
+ ret = krb5_generate_random_keyblock(context,
+ ETYPE_DES_PCBC_NONE,
+ &session);
+ if (ret) {
+ make_err_reply(context, reply, KFAILURE,
+ "Not enough random i KDC");
+ goto out1;
+ }
+
+ ret = _krb5_krb_create_ticket(context,
+ 0,
+ name,
+ inst,
+ config->v4_realm,
+ addr->sin_addr.s_addr,
+ &session,
+ life,
+ kdc_time,
+ sname,
+ sinst,
+ &skey->key,
+ &ticket);
+ if (ret) {
+ krb5_free_keyblock_contents(context, &session);
+ make_err_reply(context, reply, KFAILURE,
+ "failed to create v4 ticket");
+ goto out1;
+ }
+
+ ret = _krb5_krb_create_ciph(context,
+ &session,
+ sname,
+ sinst,
+ config->v4_realm,
+ life,
+ server->kvno % 255,
+ &ticket,
+ kdc_time,
+ &ckey->key,
+ &cipher);
+ krb5_free_keyblock_contents(context, &session);
+ krb5_data_free(&ticket);
+ if (ret) {
+ make_err_reply(context, reply, KFAILURE,
+ "Failed to create v4 cipher");
+ goto out1;
+ }
+
+ ret = _krb5_krb_create_auth_reply(context,
+ name,
+ inst,
+ realm,
+ req_time,
+ 0,
+ client->pw_end ? *client->pw_end : 0,
+ client->kvno % 256,
+ &cipher,
+ reply);
+ krb5_data_free(&cipher);
+
+ out1:
+ break;
+ }
+ case AUTH_MSG_APPL_REQUEST: {
+ struct _krb5_krb_auth_data ad;
+ int8_t kvno;
+ int8_t ticket_len;
+ int8_t req_len;
+ krb5_data auth;
+ int32_t address;
+ size_t pos;
+ krb5_principal tgt_princ = NULL;
+ hdb_entry *tgt = NULL;
+ Key *tkey;
+ time_t max_end, actual_end, issue_time;
+
+ memset(&ad, 0, sizeof(ad));
+ krb5_data_zero(&auth);
+
+ RCHECK(krb5_ret_int8(sp, &kvno), out2);
+ RCHECK(krb5_ret_stringz(sp, &realm), out2);
+
+ ret = krb5_425_conv_principal(context, "krbtgt", realm,
+ config->v4_realm,
+ &tgt_princ);
+ if(ret){
+ kdc_log(context, config, 0,
+ "Converting krbtgt principal (krb4): %s",
+ krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KFAILURE,
+ "Failed to convert v4 principal (krbtgt)");
+ goto out2;
+ }
+
+ ret = _kdc_db_fetch(context, config, tgt_princ, HDB_ENT_TYPE_SERVER, &tgt);
+ if(ret){
+ char *s;
+ s = kdc_log_msg(context, config, 0, "Ticket-granting ticket not "
+ "found in database (krb4): krbtgt.%s@%s: %s",
+ realm, config->v4_realm,
+ krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KFAILURE, s);
+ free(s);
+ goto out2;
+ }
+
+ if(tgt->kvno % 256 != kvno){
+ kdc_log(context, config, 0,
+ "tgs-req (krb4) with old kvno %d (current %d) for "
+ "krbtgt.%s@%s", kvno, tgt->kvno % 256,
+ realm, config->v4_realm);
+ make_err_reply(context, reply, KDC_AUTH_EXP,
+ "old krbtgt kvno used");
+ goto out2;
+ }
+
+ ret = _kdc_get_des_key(context, tgt, TRUE, FALSE, &tkey);
+ if(ret){
+ kdc_log(context, config, 0,
+ "no suitable DES key for krbtgt (krb4)");
+ /* XXX */
+ make_err_reply(context, reply, KDC_NULL_KEY,
+ "no suitable DES key for krbtgt");
+ goto out2;
+ }
+
+ RCHECK(krb5_ret_int8(sp, &ticket_len), out2);
+ RCHECK(krb5_ret_int8(sp, &req_len), out2);
+
+ pos = krb5_storage_seek(sp, ticket_len + req_len, SEEK_CUR);
+
+ auth.data = buf;
+ auth.length = pos;
+
+ if (config->check_ticket_addresses)
+ address = addr->sin_addr.s_addr;
+ else
+ address = 0;
+
+ ret = _krb5_krb_rd_req(context, &auth, "krbtgt", realm,
+ config->v4_realm,
+ address, &tkey->key, &ad);
+ if(ret){
+ kdc_log(context, config, 0, "krb_rd_req: %d", ret);
+ make_err_reply(context, reply, ret, "failed to parse request");
+ goto out2;
+ }
+
+ RCHECK(krb5_ret_int32(sp, &req_time), out2);
+ if(lsb)
+ req_time = swap32(req_time);
+ RCHECK(krb5_ret_int8(sp, &life), out2);
+ RCHECK(krb5_ret_stringz(sp, &sname), out2);
+ RCHECK(krb5_ret_stringz(sp, &sinst), out2);
+ snprintf (server_name, sizeof(server_name),
+ "%s.%s@%s",
+ sname, sinst, config->v4_realm);
+ snprintf (client_name, sizeof(client_name),
+ "%s.%s@%s",
+ ad.pname, ad.pinst, ad.prealm);
+
+ kdc_log(context, config, 0, "TGS-REQ (krb4) %s from %s for %s",
+ client_name, from, server_name);
+
+ if(strcmp(ad.prealm, realm)){
+ kdc_log(context, config, 0,
+ "Can't hop realms (krb4) %s -> %s", realm, ad.prealm);
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN,
+ "Can't hop realms");
+ goto out2;
+ }
+
+ if (!config->enable_v4_cross_realm && strcmp(realm, config->v4_realm) != 0) {
+ kdc_log(context, config, 0,
+ "krb4 Cross-realm %s -> %s disabled",
+ realm, config->v4_realm);
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN,
+ "Can't hop realms");
+ goto out2;
+ }
+
+ if(strcmp(sname, "changepw") == 0){
+ kdc_log(context, config, 0,
+ "Bad request for changepw ticket (krb4)");
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN,
+ "Can't authorize password change based on TGT");
+ goto out2;
+ }
+
+ ret = _kdc_db_fetch4(context, config, ad.pname, ad.pinst, ad.prealm, HDB_ENT_TYPE_CLIENT, &client);
+ if(ret && ret != HDB_ERR_NOENTRY) {
+ char *s;
+ s = kdc_log_msg(context, config, 0,
+ "Client not found in database: (krb4) %s: %s",
+ client_name, krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN, s);
+ free(s);
+ goto out2;
+ }
+ if (client == NULL && strcmp(ad.prealm, config->v4_realm) == 0) {
+ char *s;
+ s = kdc_log_msg(context, config, 0,
+ "Local client not found in database: (krb4) "
+ "%s", client_name);
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN, s);
+ free(s);
+ goto out2;
+ }
+
+ ret = _kdc_db_fetch4(context, config, sname, sinst, config->v4_realm,
+ HDB_ENT_TYPE_SERVER, &server);
+ if(ret){
+ char *s;
+ s = kdc_log_msg(context, config, 0,
+ "Server not found in database (krb4): %s: %s",
+ server_name, krb5_get_err_text(context, ret));
+ make_err_reply(context, reply, KERB_ERR_PRINCIPAL_UNKNOWN, s);
+ free(s);
+ goto out2;
+ }
+
+ ret = _kdc_check_flags (context, config,
+ client, client_name,
+ server, server_name,
+ FALSE);
+ if (ret) {
+ /* good error code? */
+ make_err_reply(context, reply, KERB_ERR_NAME_EXP,
+ "operation not allowed");
+ goto out2;
+ }
+
+ ret = _kdc_get_des_key(context, server, TRUE, FALSE, &skey);
+ if(ret){
+ kdc_log(context, config, 0,
+ "no suitable DES key for server (krb4)");
+ /* XXX */
+ make_err_reply(context, reply, KDC_NULL_KEY,
+ "no suitable DES key for server");
+ goto out2;
+ }
+
+ max_end = _krb5_krb_life_to_time(ad.time_sec, ad.life);
+ max_end = min(max_end, _krb5_krb_life_to_time(kdc_time, life));
+ if(server->max_life)
+ max_end = min(max_end, kdc_time + *server->max_life);
+ if(client && client->max_life)
+ max_end = min(max_end, kdc_time + *client->max_life);
+ life = min(life, krb_time_to_life(kdc_time, max_end));
+
+ issue_time = kdc_time;
+ actual_end = _krb5_krb_life_to_time(issue_time, life);
+ while (actual_end > max_end && life > 1) {
+ /* move them into the next earlier lifetime bracket */
+ life--;
+ actual_end = _krb5_krb_life_to_time(issue_time, life);
+ }
+ if (actual_end > max_end) {
+ /* if life <= 1 and it's still too long, backdate the ticket */
+ issue_time -= actual_end - max_end;
+ }
+
+ {
+ krb5_data ticket, cipher;
+ krb5_keyblock session;
+
+ krb5_data_zero(&ticket);
+ krb5_data_zero(&cipher);
+
+ ret = krb5_generate_random_keyblock(context,
+ ETYPE_DES_PCBC_NONE,
+ &session);
+ if (ret) {
+ make_err_reply(context, reply, KFAILURE,
+ "Not enough random i KDC");
+ goto out2;
+ }
+
+ ret = _krb5_krb_create_ticket(context,
+ 0,
+ ad.pname,
+ ad.pinst,
+ ad.prealm,
+ addr->sin_addr.s_addr,
+ &session,
+ life,
+ issue_time,
+ sname,
+ sinst,
+ &skey->key,
+ &ticket);
+ if (ret) {
+ krb5_free_keyblock_contents(context, &session);
+ make_err_reply(context, reply, KFAILURE,
+ "failed to create v4 ticket");
+ goto out2;
+ }
+
+ ret = _krb5_krb_create_ciph(context,
+ &session,
+ sname,
+ sinst,
+ config->v4_realm,
+ life,
+ server->kvno % 255,
+ &ticket,
+ issue_time,
+ &ad.session,
+ &cipher);
+ krb5_free_keyblock_contents(context, &session);
+ if (ret) {
+ make_err_reply(context, reply, KFAILURE,
+ "failed to create v4 cipher");
+ goto out2;
+ }
+
+ ret = _krb5_krb_create_auth_reply(context,
+ ad.pname,
+ ad.pinst,
+ ad.prealm,
+ req_time,
+ 0,
+ 0,
+ 0,
+ &cipher,
+ reply);
+ krb5_data_free(&cipher);
+ }
+ out2:
+ _krb5_krb_free_auth_data(context, &ad);
+ if(tgt_princ)
+ krb5_free_principal(context, tgt_princ);
+ if(tgt)
+ _kdc_free_ent(context, tgt);
+ break;
+ }
+ case AUTH_MSG_ERR_REPLY:
+ break;
+ default:
+ kdc_log(context, config, 0, "Unknown message type (krb4): %d from %s",
+ msg_type, from);
+
+ make_err_reply(context, reply, KFAILURE, "Unknown message type");
+ }
+ out:
+ if(name)
+ free(name);
+ if(inst)
+ free(inst);
+ if(realm)
+ free(realm);
+ if(sname)
+ free(sname);
+ if(sinst)
+ free(sinst);
+ if(client)
+ _kdc_free_ent(context, client);
+ if(server)
+ _kdc_free_ent(context, server);
+ krb5_storage_free(sp);
+ return 0;
+}
+
+krb5_error_code
+_kdc_encode_v4_ticket(krb5_context context,
+ krb5_kdc_configuration *config,
+ void *buf, size_t len, const EncTicketPart *et,
+ const PrincipalName *service, size_t *size)
+{
+ krb5_storage *sp;
+ krb5_error_code ret;
+ char name[40], inst[40], realm[40];
+ char sname[40], sinst[40];
+
+ {
+ krb5_principal princ;
+ _krb5_principalname2krb5_principal(&princ,
+ *service,
+ et->crealm);
+ ret = krb5_524_conv_principal(context,
+ princ,
+ sname,
+ sinst,
+ realm);
+ krb5_free_principal(context, princ);
+ if(ret)
+ return ret;
+
+ _krb5_principalname2krb5_principal(&princ,
+ et->cname,
+ et->crealm);
+
+ ret = krb5_524_conv_principal(context,
+ princ,
+ name,
+ inst,
+ realm);
+ krb5_free_principal(context, princ);
+ }
+ if(ret)
+ return ret;
+
+ sp = krb5_storage_emem();
+
+ krb5_store_int8(sp, 0); /* flags */
+ krb5_store_stringz(sp, name);
+ krb5_store_stringz(sp, inst);
+ krb5_store_stringz(sp, realm);
+ {
+ unsigned char tmp[4] = { 0, 0, 0, 0 };
+ int i;
+ if(et->caddr){
+ for(i = 0; i < et->caddr->len; i++)
+ if(et->caddr->val[i].addr_type == AF_INET &&
+ et->caddr->val[i].address.length == 4){
+ memcpy(tmp, et->caddr->val[i].address.data, 4);
+ break;
+ }
+ }
+ krb5_storage_write(sp, tmp, sizeof(tmp));
+ }
+
+ if((et->key.keytype != ETYPE_DES_CBC_MD5 &&
+ et->key.keytype != ETYPE_DES_CBC_MD4 &&
+ et->key.keytype != ETYPE_DES_CBC_CRC) ||
+ et->key.keyvalue.length != 8)
+ return -1;
+ krb5_storage_write(sp, et->key.keyvalue.data, 8);
+
+ {
+ time_t start = et->starttime ? *et->starttime : et->authtime;
+ krb5_store_int8(sp, krb_time_to_life(start, et->endtime));
+ krb5_store_int32(sp, start);
+ }
+
+ krb5_store_stringz(sp, sname);
+ krb5_store_stringz(sp, sinst);
+
+ {
+ krb5_data data;
+ krb5_storage_to_data(sp, &data);
+ krb5_storage_free(sp);
+ *size = (data.length + 7) & ~7; /* pad to 8 bytes */
+ if(*size > len)
+ return -1;
+ memset((unsigned char*)buf - *size + 1, 0, *size);
+ memcpy((unsigned char*)buf - *size + 1, data.data, data.length);
+ krb5_data_free(&data);
+ }
+ return 0;
+}
+
+krb5_error_code
+_kdc_get_des_key(krb5_context context,
+ hdb_entry *principal, krb5_boolean is_server,
+ krb5_boolean prefer_afs_key, Key **ret_key)
+{
+ Key *v5_key = NULL, *v4_key = NULL, *afs_key = NULL, *server_key = NULL;
+ int i;
+ krb5_enctype etypes[] = { ETYPE_DES_CBC_MD5,
+ ETYPE_DES_CBC_MD4,
+ ETYPE_DES_CBC_CRC };
+
+ for(i = 0;
+ i < sizeof(etypes)/sizeof(etypes[0])
+ && (v5_key == NULL || v4_key == NULL ||
+ afs_key == NULL || server_key == NULL);
+ ++i) {
+ Key *key = NULL;
+ while(hdb_next_enctype2key(context, principal, etypes[i], &key) == 0) {
+ if(key->salt == NULL) {
+ if(v5_key == NULL)
+ v5_key = key;
+ } else if(key->salt->type == hdb_pw_salt &&
+ key->salt->salt.length == 0) {
+ if(v4_key == NULL)
+ v4_key = key;
+ } else if(key->salt->type == hdb_afs3_salt) {
+ if(afs_key == NULL)
+ afs_key = key;
+ } else if(server_key == NULL)
+ server_key = key;
+ }
+ }
+
+ if(prefer_afs_key) {
+ if(afs_key)
+ *ret_key = afs_key;
+ else if(v4_key)
+ *ret_key = v4_key;
+ else if(v5_key)
+ *ret_key = v5_key;
+ else if(is_server && server_key)
+ *ret_key = server_key;
+ else
+ return KERB_ERR_NULL_KEY;
+ } else {
+ if(v4_key)
+ *ret_key = v4_key;
+ else if(afs_key)
+ *ret_key = afs_key;
+ else if(v5_key)
+ *ret_key = v5_key;
+ else if(is_server && server_key)
+ *ret_key = server_key;
+ else
+ return KERB_ERR_NULL_KEY;
+ }
+
+ if((*ret_key)->key.keyvalue.length == 0)
+ return KERB_ERR_NULL_KEY;
+ return 0;
+}
+
diff --git a/source4/heimdal/kdc/kerberos5.c b/source4/heimdal/kdc/kerberos5.c
new file mode 100644
index 0000000000..122c9ab780
--- /dev/null
+++ b/source4/heimdal/kdc/kerberos5.c
@@ -0,0 +1,2422 @@
+/*
+ * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+#ifdef _SAMBA_BUILD_
+#include "kdc/pac-glue.h"
+#endif
+
+RCSID("$Id: kerberos5.c,v 1.177 2005/06/15 11:34:53 lha Exp $");
+
+#define MAX_TIME ((time_t)((1U << 31) - 1))
+
+static void
+fix_time(time_t **t)
+{
+ if(*t == NULL){
+ ALLOC(*t);
+ **t = MAX_TIME;
+ }
+ if(**t == 0) **t = MAX_TIME; /* fix for old clients */
+}
+
+static int
+realloc_method_data(METHOD_DATA *md)
+{
+ PA_DATA *pa;
+ pa = realloc(md->val, (md->len + 1) * sizeof(*md->val));
+ if(pa == NULL)
+ return ENOMEM;
+ md->val = pa;
+ md->len++;
+ return 0;
+}
+
+static void
+set_salt_padata (METHOD_DATA *md, Salt *salt)
+{
+ if (salt) {
+ realloc_method_data(md);
+ md->val[md->len - 1].padata_type = salt->type;
+ copy_octet_string(&salt->salt,
+ &md->val[md->len - 1].padata_value);
+ }
+}
+
+static PA_DATA*
+find_padata(KDC_REQ *req, int *start, int type)
+{
+ while(*start < req->padata->len){
+ (*start)++;
+ if(req->padata->val[*start - 1].padata_type == type)
+ return &req->padata->val[*start - 1];
+ }
+ return NULL;
+}
+
+/*
+ * return the first appropriate key of `princ' in `ret_key'. Look for
+ * all the etypes in (`etypes', `len'), stopping as soon as we find
+ * one, but preferring one that has default salt
+ */
+
+static krb5_error_code
+find_etype(krb5_context context, hdb_entry *princ,
+ krb5_enctype *etypes, unsigned len,
+ Key **ret_key, krb5_enctype *ret_etype)
+{
+ int i;
+ krb5_error_code ret = KRB5KDC_ERR_ETYPE_NOSUPP;
+
+ for(i = 0; ret != 0 && i < len ; i++) {
+ Key *key = NULL;
+
+ if (krb5_enctype_valid(context, etypes[i]) != 0)
+ continue;
+
+ while (hdb_next_enctype2key(context, princ, etypes[i], &key) == 0) {
+ if (key->key.keyvalue.length == 0) {
+ ret = KRB5KDC_ERR_NULL_KEY;
+ continue;
+ }
+ *ret_key = key;
+ *ret_etype = etypes[i];
+ ret = 0;
+ if (key->salt == NULL)
+ return ret;
+ }
+ }
+ return ret;
+}
+
+static krb5_error_code
+find_keys(krb5_context context,
+ krb5_kdc_configuration *config,
+ hdb_entry *client,
+ hdb_entry *server,
+ Key **ckey,
+ krb5_enctype *cetype,
+ Key **skey,
+ krb5_enctype *setype,
+ krb5_enctype *etypes,
+ unsigned num_etypes)
+{
+ char unparse_name[] = "krb5_unparse_name failed";
+ krb5_error_code ret;
+ char *name;
+
+ if(client){
+ /* find client key */
+ ret = find_etype(context, client, etypes, num_etypes, ckey, cetype);
+ if (ret) {
+ if (krb5_unparse_name(context, client->principal, &name) != 0)
+ name = unparse_name;
+ kdc_log(context, config, 0,
+ "Client (%s) has no support for etypes", name);
+ if (name != unparse_name)
+ free(name);
+ return ret;
+ }
+ }
+
+ if(server){
+ /* find server key */
+ ret = find_etype(context, server, etypes, num_etypes, skey, setype);
+ if (ret) {
+ if (krb5_unparse_name(context, server->principal, &name) != 0)
+ name = unparse_name;
+ kdc_log(context, config, 0,
+ "Server (%s) has no support for etypes", name);
+ if (name != unparse_name)
+ free(name);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static krb5_error_code
+make_anonymous_principalname (PrincipalName *pn)
+{
+ pn->name_type = KRB5_NT_PRINCIPAL;
+ pn->name_string.len = 1;
+ pn->name_string.val = malloc(sizeof(*pn->name_string.val));
+ if (pn->name_string.val == NULL)
+ return ENOMEM;
+ pn->name_string.val[0] = strdup("anonymous");
+ if (pn->name_string.val[0] == NULL) {
+ free(pn->name_string.val);
+ pn->name_string.val = NULL;
+ return ENOMEM;
+ }
+ return 0;
+}
+
+static void
+log_timestamp(krb5_context context,
+ krb5_kdc_configuration *config,
+ const char *type,
+ KerberosTime authtime, KerberosTime *starttime,
+ KerberosTime endtime, KerberosTime *renew_till)
+{
+ char atime[100], stime[100], etime[100], rtime[100];
+
+ krb5_format_time(context, authtime, atime, sizeof(atime), TRUE);
+ if (starttime)
+ krb5_format_time(context, *starttime, stime, sizeof(stime), TRUE);
+ else
+ strlcpy(stime, "unset", sizeof(stime));
+ krb5_format_time(context, endtime, etime, sizeof(etime), TRUE);
+ if (renew_till)
+ krb5_format_time(context, *renew_till, rtime, sizeof(rtime), TRUE);
+ else
+ strlcpy(rtime, "unset", sizeof(rtime));
+
+ kdc_log(context, config, 5,
+ "%s authtime: %s starttime: %s endtype: %s renew till: %s",
+ type, atime, stime, etime, rtime);
+}
+
+static krb5_error_code
+encode_reply(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REP *rep, EncTicketPart *et, EncKDCRepPart *ek,
+ krb5_enctype etype,
+ int skvno, EncryptionKey *skey,
+ int ckvno, EncryptionKey *ckey,
+ const char **e_text,
+ krb5_data *reply)
+{
+ unsigned char *buf;
+ size_t buf_size;
+ size_t len;
+ krb5_error_code ret;
+ krb5_crypto crypto;
+
+ ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size, et, &len, ret);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to encode ticket: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ if(buf_size != len) {
+ free(buf);
+ kdc_log(context, config, 0, "Internal error in ASN.1 encoder");
+ *e_text = "KDC internal error";
+ return KRB5KRB_ERR_GENERIC;
+ }
+
+ ret = krb5_crypto_init(context, skey, etype, &crypto);
+ if (ret) {
+ free(buf);
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+
+ ret = krb5_encrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_TICKET,
+ buf,
+ len,
+ skvno,
+ &rep->ticket.enc_part);
+ free(buf);
+ krb5_crypto_destroy(context, crypto);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to encrypt data: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+
+ if(rep->msg_type == krb_as_rep && !config->encode_as_rep_as_tgs_rep)
+ ASN1_MALLOC_ENCODE(EncASRepPart, buf, buf_size, ek, &len, ret);
+ else
+ ASN1_MALLOC_ENCODE(EncTGSRepPart, buf, buf_size, ek, &len, ret);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to encode KDC-REP: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ if(buf_size != len) {
+ free(buf);
+ kdc_log(context, config, 0, "Internal error in ASN.1 encoder");
+ *e_text = "KDC internal error";
+ return KRB5KRB_ERR_GENERIC;
+ }
+ ret = krb5_crypto_init(context, ckey, 0, &crypto);
+ if (ret) {
+ free(buf);
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ if(rep->msg_type == krb_as_rep) {
+ krb5_encrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_AS_REP_ENC_PART,
+ buf,
+ len,
+ ckvno,
+ &rep->enc_part);
+ free(buf);
+ ASN1_MALLOC_ENCODE(AS_REP, buf, buf_size, rep, &len, ret);
+ } else {
+ krb5_encrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_TGS_REP_ENC_PART_SESSION,
+ buf,
+ len,
+ ckvno,
+ &rep->enc_part);
+ free(buf);
+ ASN1_MALLOC_ENCODE(TGS_REP, buf, buf_size, rep, &len, ret);
+ }
+ krb5_crypto_destroy(context, crypto);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to encode KDC-REP: %s",
+ krb5_get_err_text(context, ret));
+ return ret;
+ }
+ if(buf_size != len) {
+ free(buf);
+ kdc_log(context, config, 0, "Internal error in ASN.1 encoder");
+ *e_text = "KDC internal error";
+ return KRB5KRB_ERR_GENERIC;
+ }
+ reply->data = buf;
+ reply->length = buf_size;
+ return 0;
+}
+
+static krb5_error_code
+make_etype_info_entry(krb5_context context, ETYPE_INFO_ENTRY *ent, Key *key)
+{
+ ent->etype = key->key.keytype;
+ if(key->salt){
+ ALLOC(ent->salttype);
+#if 0
+ if(key->salt->type == hdb_pw_salt)
+ *ent->salttype = 0; /* or 1? or NULL? */
+ else if(key->salt->type == hdb_afs3_salt)
+ *ent->salttype = 2;
+ else {
+ kdc_log(context, config, 0, "unknown salt-type: %d",
+ key->salt->type);
+ return KRB5KRB_ERR_GENERIC;
+ }
+ /* according to `the specs', we can't send a salt if
+ we have AFS3 salted key, but that requires that you
+ *know* what cell you are using (e.g by assuming
+ that the cell is the same as the realm in lower
+ case) */
+#else
+ *ent->salttype = key->salt->type;
+#endif
+ krb5_copy_data(context, &key->salt->salt,
+ &ent->salt);
+ } else {
+ /* we return no salt type at all, as that should indicate
+ * the default salt type and make everybody happy. some
+ * systems (like w2k) dislike being told the salt type
+ * here. */
+
+ ent->salttype = NULL;
+ ent->salt = NULL;
+ }
+ return 0;
+}
+
+static krb5_error_code
+get_pa_etype_info(krb5_context context,
+ krb5_kdc_configuration *config,
+ METHOD_DATA *md, hdb_entry *client,
+ ENCTYPE *etypes, unsigned int etypes_len)
+{
+ krb5_error_code ret = 0;
+ int i, j;
+ unsigned int n = 0;
+ ETYPE_INFO pa;
+ unsigned char *buf;
+ size_t len;
+
+
+ pa.len = client->keys.len;
+ if(pa.len > UINT_MAX/sizeof(*pa.val))
+ return ERANGE;
+ pa.val = malloc(pa.len * sizeof(*pa.val));
+ if(pa.val == NULL)
+ return ENOMEM;
+ memset(pa.val, 0, pa.len * sizeof(*pa.val));
+
+ for(j = 0; j < etypes_len; j++) {
+ for (i = 0; i < n; i++)
+ if (pa.val[i].etype == etypes[j])
+ goto skip1;
+ for(i = 0; i < client->keys.len; i++) {
+ if(client->keys.val[i].key.keytype == etypes[j]) {
+ if (krb5_enctype_valid(context, etypes[j]) != 0)
+ continue;
+ if((ret = make_etype_info_entry(context,
+ &pa.val[n++],
+ &client->keys.val[i])) != 0) {
+ free_ETYPE_INFO(&pa);
+ return ret;
+ }
+ }
+ }
+ skip1:;
+ }
+ for(i = 0; i < client->keys.len; i++) {
+ for(j = 0; j < etypes_len; j++) {
+ if(client->keys.val[i].key.keytype == etypes[j])
+ goto skip2;
+ }
+ if (krb5_enctype_valid(context, client->keys.val[i].key.keytype) != 0)
+ continue;
+ if((ret = make_etype_info_entry(context,
+ &pa.val[n++],
+ &client->keys.val[i])) != 0) {
+ free_ETYPE_INFO(&pa);
+ return ret;
+ }
+ skip2:;
+ }
+
+ if(n != pa.len) {
+ char *name;
+ ret = krb5_unparse_name(context, client->principal, &name);
+ if (ret)
+ name = "<unparse_name failed>";
+ kdc_log(context, config, 0, "internal error in get_pa_etype_info(%s): %d != %d",
+ name, n, pa.len);
+ if (ret == 0)
+ free(name);
+ pa.len = n;
+ }
+
+ ASN1_MALLOC_ENCODE(ETYPE_INFO, buf, len, &pa, &len, ret);
+ free_ETYPE_INFO(&pa);
+ if(ret)
+ return ret;
+ ret = realloc_method_data(md);
+ if(ret) {
+ free(buf);
+ return ret;
+ }
+ md->val[md->len - 1].padata_type = KRB5_PADATA_ETYPE_INFO;
+ md->val[md->len - 1].padata_value.length = len;
+ md->val[md->len - 1].padata_value.data = buf;
+ return 0;
+}
+
+/*
+ *
+ */
+
+extern int _krb5_AES_string_to_default_iterator;
+
+static krb5_error_code
+make_etype_info2_entry(ETYPE_INFO2_ENTRY *ent, Key *key)
+{
+ ent->etype = key->key.keytype;
+ if(key->salt) {
+ ALLOC(ent->salt);
+ if (ent->salt == NULL)
+ return ENOMEM;
+ *ent->salt = malloc(key->salt->salt.length + 1);
+ if (*ent->salt == NULL) {
+ free(ent->salt);
+ ent->salt = NULL;
+ return ENOMEM;
+ }
+ memcpy(*ent->salt, key->salt->salt.data, key->salt->salt.length);
+ (*ent->salt)[key->salt->salt.length] = '\0';
+ } else
+ ent->salt = NULL;
+
+ ent->s2kparams = NULL;
+
+ switch (key->key.keytype) {
+ case KEYTYPE_AES128:
+ case KEYTYPE_AES256:
+ ALLOC(ent->s2kparams);
+ if (ent->s2kparams == NULL)
+ return ENOMEM;
+ ent->s2kparams->length = 4;
+ ent->s2kparams->data = malloc(ent->s2kparams->length);
+ if (ent->s2kparams->data == NULL) {
+ free(ent->s2kparams);
+ ent->s2kparams = NULL;
+ return ENOMEM;
+ }
+ _krb5_put_int(ent->s2kparams->data,
+ _krb5_AES_string_to_default_iterator,
+ ent->s2kparams->length);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+/*
+ * Return 1 if the client have only older enctypes, this is for
+ * determining if the server should send ETYPE_INFO2 or not.
+ */
+
+static int
+only_older_enctype_p(const KDC_REQ *req)
+{
+ int i;
+
+ for(i = 0; i < req->req_body.etype.len; i++) {
+ switch (req->req_body.etype.val[i]) {
+ case ETYPE_DES_CBC_CRC:
+ case ETYPE_DES_CBC_MD4:
+ case ETYPE_DES_CBC_MD5:
+ case ETYPE_DES3_CBC_SHA1:
+ case ETYPE_ARCFOUR_HMAC_MD5:
+ case ETYPE_ARCFOUR_HMAC_MD5_56:
+ break;
+ default:
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/*
+ *
+ */
+
+static krb5_error_code
+get_pa_etype_info2(krb5_context context,
+ krb5_kdc_configuration *config,
+ METHOD_DATA *md, hdb_entry *client,
+ ENCTYPE *etypes, unsigned int etypes_len)
+{
+ krb5_error_code ret = 0;
+ int i, j;
+ unsigned int n = 0;
+ ETYPE_INFO2 pa;
+ unsigned char *buf;
+ size_t len;
+
+ pa.len = client->keys.len;
+ if(pa.len > UINT_MAX/sizeof(*pa.val))
+ return ERANGE;
+ pa.val = malloc(pa.len * sizeof(*pa.val));
+ if(pa.val == NULL)
+ return ENOMEM;
+ memset(pa.val, 0, pa.len * sizeof(*pa.val));
+
+ for(j = 0; j < etypes_len; j++) {
+ for (i = 0; i < n; i++)
+ if (pa.val[i].etype == etypes[j])
+ goto skip1;
+ for(i = 0; i < client->keys.len; i++) {
+ if(client->keys.val[i].key.keytype == etypes[j]) {
+ if (krb5_enctype_valid(context, etypes[j]) != 0)
+ continue;
+ if((ret = make_etype_info2_entry(&pa.val[n++],
+ &client->keys.val[i])) != 0) {
+ free_ETYPE_INFO2(&pa);
+ return ret;
+ }
+ }
+ }
+ skip1:;
+ }
+ for(i = 0; i < client->keys.len; i++) {
+ for(j = 0; j < etypes_len; j++) {
+ if(client->keys.val[i].key.keytype == etypes[j])
+ goto skip2;
+ }
+ if (krb5_enctype_valid(context, client->keys.val[i].key.keytype) != 0)
+ continue;
+ if((ret = make_etype_info2_entry(&pa.val[n++],
+ &client->keys.val[i])) != 0) {
+ free_ETYPE_INFO2(&pa);
+ return ret;
+ }
+ skip2:;
+ }
+
+ if(n != pa.len) {
+ char *name;
+ ret = krb5_unparse_name(context, client->principal, &name);
+ if (ret)
+ name = "<unparse_name failed>";
+ kdc_log(context, config, 0, "internal error in get_pa_etype_info2(%s): %d != %d",
+ name, n, pa.len);
+ if (ret == 0)
+ free(name);
+ pa.len = n;
+ }
+
+ ASN1_MALLOC_ENCODE(ETYPE_INFO2, buf, len, &pa, &len, ret);
+ free_ETYPE_INFO2(&pa);
+ if(ret)
+ return ret;
+ ret = realloc_method_data(md);
+ if(ret) {
+ free(buf);
+ return ret;
+ }
+ md->val[md->len - 1].padata_type = KRB5_PADATA_ETYPE_INFO2;
+ md->val[md->len - 1].padata_value.length = len;
+ md->val[md->len - 1].padata_value.data = buf;
+ return 0;
+}
+
+/*
+ * verify the flags on `client' and `server', returning 0
+ * if they are OK and generating an error messages and returning
+ * and error code otherwise.
+ */
+
+krb5_error_code
+_kdc_check_flags(krb5_context context,
+ krb5_kdc_configuration *config,
+ hdb_entry *client, const char *client_name,
+ hdb_entry *server, const char *server_name,
+ krb5_boolean is_as_req)
+{
+ if(client != NULL) {
+ /* check client */
+ if (client->flags.invalid) {
+ kdc_log(context, config, 0,
+ "Client (%s) has invalid bit set", client_name);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ if(!client->flags.client){
+ kdc_log(context, config, 0,
+ "Principal may not act as client -- %s",
+ client_name);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ if (client->valid_start && *client->valid_start > kdc_time) {
+ kdc_log(context, config, 0, "Client not yet valid -- %s", client_name);
+ return KRB5KDC_ERR_CLIENT_NOTYET;
+ }
+
+ if (client->valid_end && *client->valid_end < kdc_time) {
+ kdc_log(context, config, 0, "Client expired -- %s", client_name);
+ return KRB5KDC_ERR_NAME_EXP;
+ }
+
+ if (client->pw_end && *client->pw_end < kdc_time
+ && !server->flags.change_pw) {
+ kdc_log(context, config, 0, "Client's key has expired -- %s", client_name);
+ return KRB5KDC_ERR_KEY_EXPIRED;
+ }
+ }
+
+ /* check server */
+
+ if (server != NULL) {
+ if (server->flags.invalid) {
+ kdc_log(context, config, 0, "Server has invalid flag set -- %s", server_name);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ if(!server->flags.server){
+ kdc_log(context, config, 0, "Principal may not act as server -- %s",
+ server_name);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ if(!is_as_req && server->flags.initial) {
+ kdc_log(context, config, 0, "AS-REQ is required for server -- %s", server_name);
+ return KRB5KDC_ERR_POLICY;
+ }
+
+ if (server->valid_start && *server->valid_start > kdc_time) {
+ kdc_log(context, config, 0, "Server not yet valid -- %s", server_name);
+ return KRB5KDC_ERR_SERVICE_NOTYET;
+ }
+
+ if (server->valid_end && *server->valid_end < kdc_time) {
+ kdc_log(context, config, 0, "Server expired -- %s", server_name);
+ return KRB5KDC_ERR_SERVICE_EXP;
+ }
+
+ if (server->pw_end && *server->pw_end < kdc_time) {
+ kdc_log(context, config, 0, "Server's key has expired -- %s", server_name);
+ return KRB5KDC_ERR_KEY_EXPIRED;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Return TRUE if `from' is part of `addresses' taking into consideration
+ * the configuration variables that tells us how strict we should be about
+ * these checks
+ */
+
+static krb5_boolean
+check_addresses(krb5_context context,
+ krb5_kdc_configuration *config,
+ HostAddresses *addresses, const struct sockaddr *from)
+{
+ krb5_error_code ret;
+ krb5_address addr;
+ krb5_boolean result;
+
+ if(config->check_ticket_addresses == 0)
+ return TRUE;
+
+ if(addresses == NULL)
+ return config->allow_null_ticket_addresses;
+
+ ret = krb5_sockaddr2address (context, from, &addr);
+ if(ret)
+ return FALSE;
+
+ result = krb5_address_search(context, &addr, addresses);
+ krb5_free_address (context, &addr);
+ return result;
+}
+
+krb5_error_code
+_kdc_as_rep(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ *req,
+ krb5_data *reply,
+ const char *from,
+ struct sockaddr *from_addr)
+{
+ KDC_REQ_BODY *b = &req->req_body;
+ AS_REP rep;
+ KDCOptions f = b->kdc_options;
+ hdb_entry *client = NULL, *server = NULL;
+ krb5_enctype cetype, setype;
+ EncTicketPart et;
+ EncKDCRepPart ek;
+ krb5_principal client_princ = NULL, server_princ = NULL;
+ char *client_name = NULL, *server_name = NULL;
+ krb5_error_code ret = 0;
+ const char *e_text = NULL;
+ krb5_crypto crypto;
+ Key *ckey, *skey;
+ EncryptionKey *reply_key;
+#ifdef PKINIT
+ pk_client_params *pkp = NULL;
+#endif
+
+ memset(&rep, 0, sizeof(rep));
+
+ if(b->sname == NULL){
+ ret = KRB5KRB_ERR_GENERIC;
+ e_text = "No server in request";
+ } else{
+ _krb5_principalname2krb5_principal (&server_princ,
+ *(b->sname), b->realm);
+ ret = krb5_unparse_name(context, server_princ, &server_name);
+ }
+ if (ret) {
+ kdc_log(context, config, 0, "AS-REQ malformed server name from %s", from);
+ goto out;
+ }
+
+ if(b->cname == NULL){
+ ret = KRB5KRB_ERR_GENERIC;
+ e_text = "No client in request";
+ } else {
+ _krb5_principalname2krb5_principal (&client_princ,
+ *(b->cname), b->realm);
+ ret = krb5_unparse_name(context, client_princ, &client_name);
+ }
+ if (ret) {
+ kdc_log(context, config, 0, "AS-REQ malformed client name from %s", from);
+ goto out;
+ }
+
+ kdc_log(context, config, 0, "AS-REQ %s from %s for %s",
+ client_name, from, server_name);
+
+ ret = _kdc_db_fetch(context, config, client_princ, HDB_ENT_TYPE_CLIENT, &client);
+ if(ret){
+ kdc_log(context, config, 0, "UNKNOWN -- %s: %s", client_name,
+ krb5_get_err_text(context, ret));
+ ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN;
+ goto out;
+ }
+
+ ret = _kdc_db_fetch(context, config, server_princ, HDB_ENT_TYPE_SERVER, &server);
+ if(ret){
+ kdc_log(context, config, 0, "UNKNOWN -- %s: %s", server_name,
+ krb5_get_err_text(context, ret));
+ ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN;
+ goto out;
+ }
+
+ ret = _kdc_check_flags(context, config,
+ client, client_name,
+ server, server_name,
+ TRUE);
+ if(ret)
+ goto out;
+
+ memset(&et, 0, sizeof(et));
+ memset(&ek, 0, sizeof(ek));
+
+ if(req->padata){
+ int i = 0;
+ PA_DATA *pa;
+ int found_pa = 0;
+
+#ifdef PKINIT
+ kdc_log(context, config, 5,
+ "Looking for PKINIT pa-data -- %s", client_name);
+
+ e_text = "No PKINIT PA found";
+
+ i = 0;
+ if ((pa = find_padata(req, &i, KRB5_PADATA_PK_AS_REQ)))
+ ;
+ if (pa == NULL) {
+ i = 0;
+ if((pa = find_padata(req, &i, KRB5_PADATA_PK_AS_REQ_19)))
+ ;
+ }
+ if (pa == NULL) {
+ i = 0;
+ if((pa = find_padata(req, &i, KRB5_PADATA_PK_AS_REQ_WIN)))
+ ;
+ }
+ if (pa) {
+ char *client_cert = NULL;
+
+ ret = _kdc_pk_rd_padata(context, config, req, pa, &pkp);
+ if (ret) {
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ kdc_log(context, config, 5,
+ "Failed to decode PKINIT PA-DATA -- %s",
+ client_name);
+ goto ts_enc;
+ }
+ if (ret == 0 && pkp == NULL)
+ goto ts_enc;
+
+ ret = _kdc_pk_check_client(context,
+ config,
+ client_princ,
+ client,
+ pkp,
+ &client_cert);
+ if (ret) {
+ e_text = "PKINIT certificate not allowed to "
+ "impersonate principal";
+ _kdc_pk_free_client_param(context, pkp);
+ pkp = NULL;
+ goto ts_enc;
+ }
+ found_pa = 1;
+ et.flags.pre_authent = 1;
+ kdc_log(context, config, 2,
+ "PKINIT pre-authentication succeeded -- %s using %s",
+ client_name, client_cert);
+ free(client_cert);
+ if (pkp)
+ goto preauth_done;
+ }
+ ts_enc:
+#endif
+ kdc_log(context, config, 5, "Looking for ENC-TS pa-data -- %s",
+ client_name);
+
+ i = 0;
+ e_text = "No ENC-TS found";
+ while((pa = find_padata(req, &i, KRB5_PADATA_ENC_TIMESTAMP))){
+ krb5_data ts_data;
+ PA_ENC_TS_ENC p;
+ size_t len;
+ EncryptedData enc_data;
+ Key *pa_key;
+
+ found_pa = 1;
+
+ ret = decode_EncryptedData(pa->padata_value.data,
+ pa->padata_value.length,
+ &enc_data,
+ &len);
+ if (ret) {
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ kdc_log(context, config, 5, "Failed to decode PA-DATA -- %s",
+ client_name);
+ goto out;
+ }
+
+ ret = hdb_enctype2key(context, client, enc_data.etype, &pa_key);
+ if(ret){
+ char *estr;
+ e_text = "No key matches pa-data";
+ ret = KRB5KDC_ERR_PREAUTH_FAILED;
+ if(krb5_enctype_to_string(context, enc_data.etype, &estr))
+ estr = NULL;
+ if(estr == NULL)
+ kdc_log(context, config, 5,
+ "No client key matching pa-data (%d) -- %s",
+ enc_data.etype, client_name);
+ else
+ kdc_log(context, config, 5,
+ "No client key matching pa-data (%s) -- %s",
+ estr, client_name);
+ free(estr);
+
+ free_EncryptedData(&enc_data);
+ continue;
+ }
+
+ try_next_key:
+ ret = krb5_crypto_init(context, &pa_key->key, 0, &crypto);
+ if (ret) {
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ free_EncryptedData(&enc_data);
+ continue;
+ }
+
+ ret = krb5_decrypt_EncryptedData (context,
+ crypto,
+ KRB5_KU_PA_ENC_TIMESTAMP,
+ &enc_data,
+ &ts_data);
+ krb5_crypto_destroy(context, crypto);
+ if(ret){
+ if(hdb_next_enctype2key(context, client,
+ enc_data.etype, &pa_key) == 0)
+ goto try_next_key;
+ free_EncryptedData(&enc_data);
+ e_text = "Failed to decrypt PA-DATA";
+ kdc_log(context, config,
+ 5, "Failed to decrypt PA-DATA -- %s",
+ client_name);
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ continue;
+ }
+ free_EncryptedData(&enc_data);
+ ret = decode_PA_ENC_TS_ENC(ts_data.data,
+ ts_data.length,
+ &p,
+ &len);
+ krb5_data_free(&ts_data);
+ if(ret){
+ e_text = "Failed to decode PA-ENC-TS-ENC";
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ kdc_log(context, config,
+ 5, "Failed to decode PA-ENC-TS_ENC -- %s",
+ client_name);
+ continue;
+ }
+ free_PA_ENC_TS_ENC(&p);
+ if (abs(kdc_time - p.patimestamp) > context->max_skew) {
+ ret = KRB5KDC_ERR_PREAUTH_FAILED;
+ e_text = "Too large time skew";
+ kdc_log(context, config, 0,
+ "Too large time skew -- %s", client_name);
+ goto out;
+ }
+ et.flags.pre_authent = 1;
+ kdc_log(context, config, 2,
+ "ENC-TS Pre-authentication succeeded -- %s",
+ client_name);
+ break;
+ }
+#ifdef PKINIT
+ preauth_done:
+#endif
+ if(found_pa == 0 && config->require_preauth)
+ goto use_pa;
+ /* We come here if we found a pa-enc-timestamp, but if there
+ was some problem with it, other than too large skew */
+ if(found_pa && et.flags.pre_authent == 0){
+ kdc_log(context, config, 0, "%s -- %s", e_text, client_name);
+ e_text = NULL;
+ goto out;
+ }
+ }else if (config->require_preauth
+ || client->flags.require_preauth
+ || server->flags.require_preauth) {
+ METHOD_DATA method_data;
+ PA_DATA *pa;
+ unsigned char *buf;
+ size_t len;
+ krb5_data foo_data;
+
+ use_pa:
+ method_data.len = 0;
+ method_data.val = NULL;
+
+ ret = realloc_method_data(&method_data);
+ pa = &method_data.val[method_data.len-1];
+ pa->padata_type = KRB5_PADATA_ENC_TIMESTAMP;
+ pa->padata_value.length = 0;
+ pa->padata_value.data = NULL;
+
+#ifdef PKINIT
+ ret = realloc_method_data(&method_data);
+ pa = &method_data.val[method_data.len-1];
+ pa->padata_type = KRB5_PADATA_PK_AS_REQ;
+ pa->padata_value.length = 0;
+ pa->padata_value.data = NULL;
+
+ ret = realloc_method_data(&method_data);
+ pa = &method_data.val[method_data.len-1];
+ pa->padata_type = KRB5_PADATA_PK_AS_REQ_19;
+ pa->padata_value.length = 0;
+ pa->padata_value.data = NULL;
+#endif
+
+ /* XXX check ret */
+ if (only_older_enctype_p(req))
+ ret = get_pa_etype_info(context, config, &method_data, client,
+ b->etype.val, b->etype.len);
+ /* XXX check ret */
+ ret = get_pa_etype_info2(context, config, &method_data, client,
+ b->etype.val, b->etype.len);
+
+
+ ASN1_MALLOC_ENCODE(METHOD_DATA, buf, len, &method_data, &len, ret);
+ free_METHOD_DATA(&method_data);
+ foo_data.data = buf;
+ foo_data.length = len;
+
+ ret = KRB5KDC_ERR_PREAUTH_REQUIRED;
+ krb5_mk_error(context,
+ ret,
+ "Need to use PA-ENC-TIMESTAMP/PA-PK-AS-REQ",
+ &foo_data,
+ client_princ,
+ server_princ,
+ NULL,
+ NULL,
+ reply);
+ free(buf);
+ kdc_log(context, config, 0,
+ "No preauth found, returning PREAUTH-REQUIRED -- %s",
+ client_name);
+ ret = 0;
+ goto out2;
+ }
+
+ ret = find_keys(context, config,
+ client, server, &ckey, &cetype, &skey, &setype,
+ b->etype.val, b->etype.len);
+ if(ret) {
+ kdc_log(context, config, 0, "Server/client has no support for etypes");
+ goto out;
+ }
+
+ {
+ struct rk_strpool *p = NULL;
+ char *str;
+ int i;
+
+ for (i = 0; i < b->etype.len; i++) {
+ ret = krb5_enctype_to_string(context, b->etype.val[i], &str);
+ if (ret == 0) {
+ p = rk_strpoolprintf(p, "%s", str);
+ free(str);
+ } else
+ p = rk_strpoolprintf(p, "%d", b->etype.val[i]);
+ if (p && i + 1 < b->etype.len)
+ p = rk_strpoolprintf(p, ", ");
+ if (p == NULL) {
+ kdc_log(context, config, 0, "out of meory");
+ goto out;
+ }
+ }
+ str = rk_strpoolcollect(p);
+ kdc_log(context, config, 0, "Client supported enctypes: %s", str);
+ free(str);
+ }
+ {
+ char *cet;
+ char *set;
+
+ ret = krb5_enctype_to_string(context, cetype, &cet);
+ if(ret == 0) {
+ ret = krb5_enctype_to_string(context, setype, &set);
+ if (ret == 0) {
+ kdc_log(context, config, 5, "Using %s/%s", cet, set);
+ free(set);
+ }
+ free(cet);
+ }
+ if (ret != 0)
+ kdc_log(context, config, 5, "Using e-types %d/%d", cetype, setype);
+ }
+
+ {
+ char str[128];
+ unparse_flags(KDCOptions2int(f), asn1_KDCOptions_units(),
+ str, sizeof(str));
+ if(*str)
+ kdc_log(context, config, 2, "Requested flags: %s", str);
+ }
+
+
+ if(f.renew || f.validate || f.proxy || f.forwarded || f.enc_tkt_in_skey
+ || (f.request_anonymous && !config->allow_anonymous)) {
+ ret = KRB5KDC_ERR_BADOPTION;
+ kdc_log(context, config, 0, "Bad KDC options -- %s", client_name);
+ goto out;
+ }
+
+ rep.pvno = 5;
+ rep.msg_type = krb_as_rep;
+ copy_Realm(&client->principal->realm, &rep.crealm);
+ if (f.request_anonymous)
+ make_anonymous_principalname (&rep.cname);
+ else
+ _krb5_principal2principalname(&rep.cname,
+ client->principal);
+ rep.ticket.tkt_vno = 5;
+ copy_Realm(&server->principal->realm, &rep.ticket.realm);
+ _krb5_principal2principalname(&rep.ticket.sname,
+ server->principal);
+
+ et.flags.initial = 1;
+ if(client->flags.forwardable && server->flags.forwardable)
+ et.flags.forwardable = f.forwardable;
+ else if (f.forwardable) {
+ ret = KRB5KDC_ERR_POLICY;
+ kdc_log(context, config, 0,
+ "Ticket may not be forwardable -- %s", client_name);
+ goto out;
+ }
+ if(client->flags.proxiable && server->flags.proxiable)
+ et.flags.proxiable = f.proxiable;
+ else if (f.proxiable) {
+ ret = KRB5KDC_ERR_POLICY;
+ kdc_log(context, config, 0,
+ "Ticket may not be proxiable -- %s", client_name);
+ goto out;
+ }
+ if(client->flags.postdate && server->flags.postdate)
+ et.flags.may_postdate = f.allow_postdate;
+ else if (f.allow_postdate){
+ ret = KRB5KDC_ERR_POLICY;
+ kdc_log(context, config, 0,
+ "Ticket may not be postdatable -- %s", client_name);
+ goto out;
+ }
+
+ /* check for valid set of addresses */
+ if(!check_addresses(context, config, b->addresses, from_addr)) {
+ ret = KRB5KRB_AP_ERR_BADADDR;
+ kdc_log(context, config, 0,
+ "Bad address list requested -- %s", client_name);
+ goto out;
+ }
+
+ krb5_generate_random_keyblock(context, setype, &et.key);
+ copy_PrincipalName(&rep.cname, &et.cname);
+ copy_Realm(&rep.crealm, &et.crealm);
+
+ {
+ time_t start;
+ time_t t;
+
+ start = et.authtime = kdc_time;
+
+ if(f.postdated && req->req_body.from){
+ ALLOC(et.starttime);
+ start = *et.starttime = *req->req_body.from;
+ et.flags.invalid = 1;
+ et.flags.postdated = 1; /* XXX ??? */
+ }
+ fix_time(&b->till);
+ t = *b->till;
+
+ /* be careful not overflowing */
+
+ if(client->max_life)
+ t = start + min(t - start, *client->max_life);
+ if(server->max_life)
+ t = start + min(t - start, *server->max_life);
+#if 0
+ t = min(t, start + realm->max_life);
+#endif
+ et.endtime = t;
+ if(f.renewable_ok && et.endtime < *b->till){
+ f.renewable = 1;
+ if(b->rtime == NULL){
+ ALLOC(b->rtime);
+ *b->rtime = 0;
+ }
+ if(*b->rtime < *b->till)
+ *b->rtime = *b->till;
+ }
+ if(f.renewable && b->rtime){
+ t = *b->rtime;
+ if(t == 0)
+ t = MAX_TIME;
+ if(client->max_renew)
+ t = start + min(t - start, *client->max_renew);
+ if(server->max_renew)
+ t = start + min(t - start, *server->max_renew);
+#if 0
+ t = min(t, start + realm->max_renew);
+#endif
+ ALLOC(et.renew_till);
+ *et.renew_till = t;
+ et.flags.renewable = 1;
+ }
+ }
+
+ if (f.request_anonymous)
+ et.flags.anonymous = 1;
+
+ if(b->addresses){
+ ALLOC(et.caddr);
+ copy_HostAddresses(b->addresses, et.caddr);
+ }
+
+ et.transited.tr_type = DOMAIN_X500_COMPRESS;
+ krb5_data_zero(&et.transited.contents);
+
+ copy_EncryptionKey(&et.key, &ek.key);
+
+ /* The MIT ASN.1 library (obviously) doesn't tell lengths encoded
+ * as 0 and as 0x80 (meaning indefinite length) apart, and is thus
+ * incapable of correctly decoding SEQUENCE OF's of zero length.
+ *
+ * To fix this, always send at least one no-op last_req
+ *
+ * If there's a pw_end or valid_end we will use that,
+ * otherwise just a dummy lr.
+ */
+ ek.last_req.val = malloc(2 * sizeof(*ek.last_req.val));
+ ek.last_req.len = 0;
+ if (client->pw_end
+ && (config->kdc_warn_pwexpire == 0
+ || kdc_time + config->kdc_warn_pwexpire <= *client->pw_end)) {
+ ek.last_req.val[ek.last_req.len].lr_type = LR_PW_EXPTIME;
+ ek.last_req.val[ek.last_req.len].lr_value = *client->pw_end;
+ ++ek.last_req.len;
+ }
+ if (client->valid_end) {
+ ek.last_req.val[ek.last_req.len].lr_type = LR_ACCT_EXPTIME;
+ ek.last_req.val[ek.last_req.len].lr_value = *client->valid_end;
+ ++ek.last_req.len;
+ }
+ if (ek.last_req.len == 0) {
+ ek.last_req.val[ek.last_req.len].lr_type = LR_NONE;
+ ek.last_req.val[ek.last_req.len].lr_value = 0;
+ ++ek.last_req.len;
+ }
+ ek.nonce = b->nonce;
+ if (client->valid_end || client->pw_end) {
+ ALLOC(ek.key_expiration);
+ if (client->valid_end) {
+ if (client->pw_end)
+ *ek.key_expiration = min(*client->valid_end, *client->pw_end);
+ else
+ *ek.key_expiration = *client->valid_end;
+ } else
+ *ek.key_expiration = *client->pw_end;
+ } else
+ ek.key_expiration = NULL;
+ ek.flags = et.flags;
+ ek.authtime = et.authtime;
+ if (et.starttime) {
+ ALLOC(ek.starttime);
+ *ek.starttime = *et.starttime;
+ }
+ ek.endtime = et.endtime;
+ if (et.renew_till) {
+ ALLOC(ek.renew_till);
+ *ek.renew_till = *et.renew_till;
+ }
+ copy_Realm(&rep.ticket.realm, &ek.srealm);
+ copy_PrincipalName(&rep.ticket.sname, &ek.sname);
+ if(et.caddr){
+ ALLOC(ek.caddr);
+ copy_HostAddresses(et.caddr, ek.caddr);
+ }
+
+ ALLOC(rep.padata);
+ rep.padata->len = 0;
+ rep.padata->val = NULL;
+
+ reply_key = &ckey->key;
+#if PKINIT
+ if (pkp) {
+ ret = _kdc_pk_mk_pa_reply(context, config, pkp, client, req,
+ &reply_key, rep.padata);
+ if (ret)
+ goto out;
+ }
+#endif
+
+ set_salt_padata (rep.padata, ckey->salt);
+
+ if (rep.padata->len == 0) {
+ free(rep.padata);
+ rep.padata = NULL;
+ }
+
+ log_timestamp(context, config, "AS-REQ", et.authtime, et.starttime,
+ et.endtime, et.renew_till);
+
+ ret = encode_reply(context, config,
+ &rep, &et, &ek, setype, server->kvno, &skey->key,
+ client->kvno, reply_key, &e_text, reply);
+ free_EncTicketPart(&et);
+ free_EncKDCRepPart(&ek);
+ out:
+ free_AS_REP(&rep);
+ if(ret){
+ krb5_mk_error(context,
+ ret,
+ e_text,
+ NULL,
+ client_princ,
+ server_princ,
+ NULL,
+ NULL,
+ reply);
+ ret = 0;
+ }
+ out2:
+#ifdef PKINIT
+ if (pkp)
+ _kdc_pk_free_client_param(context, pkp);
+#endif
+ if (client_princ)
+ krb5_free_principal(context, client_princ);
+ free(client_name);
+ if (server_princ)
+ krb5_free_principal(context, server_princ);
+ free(server_name);
+ if(client)
+ _kdc_free_ent(context, client);
+ if(server)
+ _kdc_free_ent(context, server);
+ return ret;
+}
+
+
+static krb5_error_code
+check_tgs_flags(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ_BODY *b, EncTicketPart *tgt, EncTicketPart *et)
+{
+ KDCOptions f = b->kdc_options;
+
+ if(f.validate){
+ if(!tgt->flags.invalid || tgt->starttime == NULL){
+ kdc_log(context, config, 0, "Bad request to validate ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ if(*tgt->starttime > kdc_time){
+ kdc_log(context, config, 0, "Early request to validate ticket");
+ return KRB5KRB_AP_ERR_TKT_NYV;
+ }
+ /* XXX tkt = tgt */
+ et->flags.invalid = 0;
+ }else if(tgt->flags.invalid){
+ kdc_log(context, config, 0, "Ticket-granting ticket has INVALID flag set");
+ return KRB5KRB_AP_ERR_TKT_INVALID;
+ }
+
+ if(f.forwardable){
+ if(!tgt->flags.forwardable){
+ kdc_log(context, config, 0, "Bad request for forwardable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.forwardable = 1;
+ }
+ if(f.forwarded){
+ if(!tgt->flags.forwardable){
+ kdc_log(context, config, 0, "Request to forward non-forwardable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.forwarded = 1;
+ et->caddr = b->addresses;
+ }
+ if(tgt->flags.forwarded)
+ et->flags.forwarded = 1;
+
+ if(f.proxiable){
+ if(!tgt->flags.proxiable){
+ kdc_log(context, config, 0,
+ "Bad request for proxiable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.proxiable = 1;
+ }
+ if(f.proxy){
+ if(!tgt->flags.proxiable){
+ kdc_log(context, config, 0,
+ "Request to proxy non-proxiable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.proxy = 1;
+ et->caddr = b->addresses;
+ }
+ if(tgt->flags.proxy)
+ et->flags.proxy = 1;
+
+ if(f.allow_postdate){
+ if(!tgt->flags.may_postdate){
+ kdc_log(context, config, 0,
+ "Bad request for post-datable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.may_postdate = 1;
+ }
+ if(f.postdated){
+ if(!tgt->flags.may_postdate){
+ kdc_log(context, config, 0,
+ "Bad request for postdated ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ if(b->from)
+ *et->starttime = *b->from;
+ et->flags.postdated = 1;
+ et->flags.invalid = 1;
+ }else if(b->from && *b->from > kdc_time + context->max_skew){
+ kdc_log(context, config, 0, "Ticket cannot be postdated");
+ return KRB5KDC_ERR_CANNOT_POSTDATE;
+ }
+
+ if(f.renewable){
+ if(!tgt->flags.renewable){
+ kdc_log(context, config, 0,
+ "Bad request for renewable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ et->flags.renewable = 1;
+ ALLOC(et->renew_till);
+ fix_time(&b->rtime);
+ *et->renew_till = *b->rtime;
+ }
+ if(f.renew){
+ time_t old_life;
+ if(!tgt->flags.renewable || tgt->renew_till == NULL){
+ kdc_log(context, config, 0,
+ "Request to renew non-renewable ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ old_life = tgt->endtime;
+ if(tgt->starttime)
+ old_life -= *tgt->starttime;
+ else
+ old_life -= tgt->authtime;
+ et->endtime = *et->starttime + old_life;
+ if (et->renew_till != NULL)
+ et->endtime = min(*et->renew_till, et->endtime);
+ }
+
+ /* checks for excess flags */
+ if(f.request_anonymous && !config->allow_anonymous){
+ kdc_log(context, config, 0,
+ "Request for anonymous ticket");
+ return KRB5KDC_ERR_BADOPTION;
+ }
+ return 0;
+}
+
+static krb5_error_code
+fix_transited_encoding(krb5_context context,
+ krb5_kdc_configuration *config,
+ krb5_boolean check_policy,
+ TransitedEncoding *tr,
+ EncTicketPart *et,
+ const char *client_realm,
+ const char *server_realm,
+ const char *tgt_realm)
+{
+ krb5_error_code ret = 0;
+ char **realms, **tmp;
+ int num_realms;
+ int i;
+
+ if(tr->tr_type != DOMAIN_X500_COMPRESS) {
+ kdc_log(context, config, 0,
+ "Unknown transited type: %u", tr->tr_type);
+ return KRB5KDC_ERR_TRTYPE_NOSUPP;
+ }
+
+ ret = krb5_domain_x500_decode(context,
+ tr->contents,
+ &realms,
+ &num_realms,
+ client_realm,
+ server_realm);
+ if(ret){
+ krb5_warn(context, ret,
+ "Decoding transited encoding");
+ return ret;
+ }
+ if(strcmp(client_realm, tgt_realm) && strcmp(server_realm, tgt_realm)) {
+ /* not us, so add the previous realm to transited set */
+ if (num_realms < 0 || num_realms + 1 > UINT_MAX/sizeof(*realms)) {
+ ret = ERANGE;
+ goto free_realms;
+ }
+ tmp = realloc(realms, (num_realms + 1) * sizeof(*realms));
+ if(tmp == NULL){
+ ret = ENOMEM;
+ goto free_realms;
+ }
+ realms = tmp;
+ realms[num_realms] = strdup(tgt_realm);
+ if(realms[num_realms] == NULL){
+ ret = ENOMEM;
+ goto free_realms;
+ }
+ num_realms++;
+ }
+ if(num_realms == 0) {
+ if(strcmp(client_realm, server_realm))
+ kdc_log(context, config, 0,
+ "cross-realm %s -> %s", client_realm, server_realm);
+ } else {
+ size_t l = 0;
+ char *rs;
+ for(i = 0; i < num_realms; i++)
+ l += strlen(realms[i]) + 2;
+ rs = malloc(l);
+ if(rs != NULL) {
+ *rs = '\0';
+ for(i = 0; i < num_realms; i++) {
+ if(i > 0)
+ strlcat(rs, ", ", l);
+ strlcat(rs, realms[i], l);
+ }
+ kdc_log(context, config, 0,
+ "cross-realm %s -> %s via [%s]",
+ client_realm, server_realm, rs);
+ free(rs);
+ }
+ }
+ if(check_policy) {
+ ret = krb5_check_transited(context, client_realm,
+ server_realm,
+ realms, num_realms, NULL);
+ if(ret) {
+ krb5_warn(context, ret, "cross-realm %s -> %s",
+ client_realm, server_realm);
+ goto free_realms;
+ }
+ et->flags.transited_policy_checked = 1;
+ }
+ et->transited.tr_type = DOMAIN_X500_COMPRESS;
+ ret = krb5_domain_x500_encode(realms, num_realms, &et->transited.contents);
+ if(ret)
+ krb5_warn(context, ret, "Encoding transited encoding");
+ free_realms:
+ for(i = 0; i < num_realms; i++)
+ free(realms[i]);
+ free(realms);
+ return ret;
+}
+
+
+static krb5_error_code
+tgs_make_reply(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ_BODY *b,
+ EncTicketPart *tgt,
+ EncTicketPart *adtkt,
+ AuthorizationData *auth_data,
+ hdb_entry *server,
+ hdb_entry *client,
+ krb5_principal client_principal,
+ hdb_entry *krbtgt,
+ EncryptionKey *tgtkey,
+ krb5_enctype cetype,
+ const char **e_text,
+ krb5_data *reply)
+{
+ KDC_REP rep;
+ EncKDCRepPart ek;
+ EncTicketPart et;
+ KDCOptions f = b->kdc_options;
+ krb5_error_code ret;
+ krb5_enctype etype;
+ Key *skey;
+ EncryptionKey *ekey;
+
+ if(adtkt) {
+ int i;
+ krb5_keytype kt;
+ ekey = &adtkt->key;
+ for(i = 0; i < b->etype.len; i++){
+ ret = krb5_enctype_to_keytype(context, b->etype.val[i], &kt);
+ if(ret)
+ continue;
+ if(adtkt->key.keytype == kt)
+ break;
+ }
+ if(i == b->etype.len)
+ return KRB5KDC_ERR_ETYPE_NOSUPP;
+ etype = b->etype.val[i];
+ }else{
+ ret = find_keys(context, config,
+ NULL, server, NULL, NULL, &skey, &etype,
+ b->etype.val, b->etype.len);
+ if(ret) {
+ kdc_log(context, config, 0, "Server has no support for etypes");
+ return ret;
+ }
+ ekey = &skey->key;
+ }
+
+ memset(&rep, 0, sizeof(rep));
+ memset(&et, 0, sizeof(et));
+ memset(&ek, 0, sizeof(ek));
+
+ rep.pvno = 5;
+ rep.msg_type = krb_tgs_rep;
+
+ et.authtime = tgt->authtime;
+ fix_time(&b->till);
+ et.endtime = min(tgt->endtime, *b->till);
+ ALLOC(et.starttime);
+ *et.starttime = kdc_time;
+
+ ret = check_tgs_flags(context, config, b, tgt, &et);
+ if(ret)
+ goto out;
+
+ /* We should check the transited encoding if:
+ 1) the request doesn't ask not to be checked
+ 2) globally enforcing a check
+ 3) principal requires checking
+ 4) we allow non-check per-principal, but principal isn't marked as allowing this
+ 5) we don't globally allow this
+ */
+
+#define GLOBAL_FORCE_TRANSITED_CHECK \
+ (config->trpolicy == TRPOLICY_ALWAYS_CHECK)
+#define GLOBAL_ALLOW_PER_PRINCIPAL \
+ (config->trpolicy == TRPOLICY_ALLOW_PER_PRINCIPAL)
+#define GLOBAL_ALLOW_DISABLE_TRANSITED_CHECK \
+ (config->trpolicy == TRPOLICY_ALWAYS_HONOUR_REQUEST)
+
+/* these will consult the database in future release */
+#define PRINCIPAL_FORCE_TRANSITED_CHECK(P) 0
+#define PRINCIPAL_ALLOW_DISABLE_TRANSITED_CHECK(P) 0
+
+ ret = fix_transited_encoding(context, config,
+ !f.disable_transited_check ||
+ GLOBAL_FORCE_TRANSITED_CHECK ||
+ PRINCIPAL_FORCE_TRANSITED_CHECK(server) ||
+ !((GLOBAL_ALLOW_PER_PRINCIPAL &&
+ PRINCIPAL_ALLOW_DISABLE_TRANSITED_CHECK(server)) ||
+ GLOBAL_ALLOW_DISABLE_TRANSITED_CHECK),
+ &tgt->transited, &et,
+ *krb5_princ_realm(context, client_principal),
+ *krb5_princ_realm(context, server->principal),
+ *krb5_princ_realm(context, krbtgt->principal));
+ if(ret)
+ goto out;
+
+ copy_Realm(krb5_princ_realm(context, server->principal),
+ &rep.ticket.realm);
+ _krb5_principal2principalname(&rep.ticket.sname, server->principal);
+ copy_Realm(&tgt->crealm, &rep.crealm);
+ if (f.request_anonymous)
+ make_anonymous_principalname (&tgt->cname);
+ else
+ copy_PrincipalName(&tgt->cname, &rep.cname);
+ rep.ticket.tkt_vno = 5;
+
+ ek.caddr = et.caddr;
+ if(et.caddr == NULL)
+ et.caddr = tgt->caddr;
+
+ {
+ time_t life;
+ life = et.endtime - *et.starttime;
+ if(client && client->max_life)
+ life = min(life, *client->max_life);
+ if(server->max_life)
+ life = min(life, *server->max_life);
+ et.endtime = *et.starttime + life;
+ }
+ if(f.renewable_ok && tgt->flags.renewable &&
+ et.renew_till == NULL && et.endtime < *b->till){
+ et.flags.renewable = 1;
+ ALLOC(et.renew_till);
+ *et.renew_till = *b->till;
+ }
+ if(et.renew_till){
+ time_t renew;
+ renew = *et.renew_till - et.authtime;
+ if(client && client->max_renew)
+ renew = min(renew, *client->max_renew);
+ if(server->max_renew)
+ renew = min(renew, *server->max_renew);
+ *et.renew_till = et.authtime + renew;
+ }
+
+ if(et.renew_till){
+ *et.renew_till = min(*et.renew_till, *tgt->renew_till);
+ *et.starttime = min(*et.starttime, *et.renew_till);
+ et.endtime = min(et.endtime, *et.renew_till);
+ }
+
+ *et.starttime = min(*et.starttime, et.endtime);
+
+ if(*et.starttime == et.endtime){
+ ret = KRB5KDC_ERR_NEVER_VALID;
+ goto out;
+ }
+ if(et.renew_till && et.endtime == *et.renew_till){
+ free(et.renew_till);
+ et.renew_till = NULL;
+ et.flags.renewable = 0;
+ }
+
+ et.flags.pre_authent = tgt->flags.pre_authent;
+ et.flags.hw_authent = tgt->flags.hw_authent;
+ et.flags.anonymous = tgt->flags.anonymous;
+ et.flags.ok_as_delegate = server->flags.ok_as_delegate;
+
+#ifdef _SAMBA_BUILD_
+
+ {
+
+ unsigned char *buf;
+ size_t buf_size;
+ size_t len;
+
+ krb5_data pac;
+ AD_IF_RELEVANT *if_relevant;
+ ALLOC(if_relevant);
+ if_relevant->len = 1;
+ if_relevant->val = malloc(sizeof(*if_relevant->val));
+ if_relevant->val[0].ad_type = KRB5_AUTHDATA_WIN2K_PAC;
+ if_relevant->val[0].ad_data.data = NULL;
+ if_relevant->val[0].ad_data.length = 0;
+
+ /* Get PAC from Samba */
+ ret = samba_get_pac(context, config,
+ client->principal,
+ tgtkey,
+ ekey,
+ &pac);
+ if (ret) {
+ free_AuthorizationData(if_relevant);
+ goto out;
+ }
+
+ /* pac.data will be freed with this */
+ if_relevant->val[0].ad_data.data = pac.data;
+ if_relevant->val[0].ad_data.length = pac.length;
+
+ ASN1_MALLOC_ENCODE(AuthorizationData, buf, buf_size, if_relevant, &len, ret);
+
+ auth_data = NULL;
+ ALLOC(auth_data);
+ auth_data->len = 1;
+ auth_data->val = malloc(sizeof(*auth_data->val));
+ auth_data->val[0].ad_type = KRB5_AUTHDATA_IF_RELEVANT;
+ auth_data->val[0].ad_data.length = len;
+ auth_data->val[0].ad_data.data = buf;
+ if (ret) {
+ goto out;
+ }
+ }
+
+#endif
+ /* XXX Check enc-authorization-data */
+ et.authorization_data = auth_data;
+
+ krb5_generate_random_keyblock(context, etype, &et.key);
+ et.crealm = tgt->crealm;
+ et.cname = tgt->cname;
+
+ ek.key = et.key;
+ /* MIT must have at least one last_req */
+ ek.last_req.len = 1;
+ ek.last_req.val = calloc(1, sizeof(*ek.last_req.val));
+ ek.nonce = b->nonce;
+ ek.flags = et.flags;
+ ek.authtime = et.authtime;
+ ek.starttime = et.starttime;
+ ek.endtime = et.endtime;
+ ek.renew_till = et.renew_till;
+ ek.srealm = rep.ticket.realm;
+ ek.sname = rep.ticket.sname;
+
+ log_timestamp(context, config, "TGS-REQ", et.authtime, et.starttime,
+ et.endtime, et.renew_till);
+
+ /* It is somewhat unclear where the etype in the following
+ encryption should come from. What we have is a session
+ key in the passed tgt, and a list of preferred etypes
+ *for the new ticket*. Should we pick the best possible
+ etype, given the keytype in the tgt, or should we look
+ at the etype list here as well? What if the tgt
+ session key is DES3 and we want a ticket with a (say)
+ CAST session key. Should the DES3 etype be added to the
+ etype list, even if we don't want a session key with
+ DES3? */
+ ret = encode_reply(context, config,
+ &rep, &et, &ek, etype, adtkt ? 0 : server->kvno, ekey,
+ 0, &tgt->key, e_text, reply);
+ out:
+ free_TGS_REP(&rep);
+ free_TransitedEncoding(&et.transited);
+ if(et.starttime)
+ free(et.starttime);
+ if(et.renew_till)
+ free(et.renew_till);
+ free_LastReq(&ek.last_req);
+ memset(et.key.keyvalue.data, 0, et.key.keyvalue.length);
+ free_EncryptionKey(&et.key);
+ return ret;
+}
+
+static krb5_error_code
+tgs_check_authenticator(krb5_context context,
+ krb5_kdc_configuration *config,
+ krb5_auth_context ac,
+ KDC_REQ_BODY *b,
+ const char **e_text,
+ krb5_keyblock *key)
+{
+ krb5_authenticator auth;
+ size_t len;
+ unsigned char *buf;
+ size_t buf_size;
+ krb5_error_code ret;
+ krb5_crypto crypto;
+
+ krb5_auth_con_getauthenticator(context, ac, &auth);
+ if(auth->cksum == NULL){
+ kdc_log(context, config, 0, "No authenticator in request");
+ ret = KRB5KRB_AP_ERR_INAPP_CKSUM;
+ goto out;
+ }
+ /*
+ * according to RFC1510 it doesn't need to be keyed,
+ * but according to the latest draft it needs to.
+ */
+ if (
+#if 0
+!krb5_checksum_is_keyed(context, auth->cksum->cksumtype)
+ ||
+#endif
+ !krb5_checksum_is_collision_proof(context, auth->cksum->cksumtype)) {
+ kdc_log(context, config, 0, "Bad checksum type in authenticator: %d",
+ auth->cksum->cksumtype);
+ ret = KRB5KRB_AP_ERR_INAPP_CKSUM;
+ goto out;
+ }
+
+ /* XXX should not re-encode this */
+ ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, b, &len, ret);
+ if(ret){
+ kdc_log(context, config, 0, "Failed to encode KDC-REQ-BODY: %s",
+ krb5_get_err_text(context, ret));
+ goto out;
+ }
+ if(buf_size != len) {
+ free(buf);
+ kdc_log(context, config, 0, "Internal error in ASN.1 encoder");
+ *e_text = "KDC internal error";
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+ ret = krb5_crypto_init(context, key, 0, &crypto);
+ if (ret) {
+ free(buf);
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ goto out;
+ }
+ ret = krb5_verify_checksum(context,
+ crypto,
+ KRB5_KU_TGS_REQ_AUTH_CKSUM,
+ buf,
+ len,
+ auth->cksum);
+ free(buf);
+ krb5_crypto_destroy(context, crypto);
+ if(ret){
+ kdc_log(context, config, 0, "Failed to verify checksum: %s",
+ krb5_get_err_text(context, ret));
+ }
+out:
+ free_Authenticator(auth);
+ free(auth);
+ return ret;
+}
+
+/*
+ * return the realm of a krbtgt-ticket or NULL
+ */
+
+static Realm
+get_krbtgt_realm(const PrincipalName *p)
+{
+ if(p->name_string.len == 2
+ && strcmp(p->name_string.val[0], KRB5_TGS_NAME) == 0)
+ return p->name_string.val[1];
+ else
+ return NULL;
+}
+
+static const char *
+find_rpath(krb5_context context, Realm crealm, Realm srealm)
+{
+ const char *new_realm = krb5_config_get_string(context,
+ NULL,
+ "capaths",
+ crealm,
+ srealm,
+ NULL);
+ return new_realm;
+}
+
+
+static krb5_boolean
+need_referral(krb5_context context, krb5_principal server, krb5_realm **realms)
+{
+ if(server->name.name_type != KRB5_NT_SRV_INST ||
+ server->name.name_string.len != 2)
+ return FALSE;
+
+ return _krb5_get_host_realm_int(context, server->name.name_string.val[1],
+ FALSE, realms) == 0;
+}
+
+static krb5_error_code
+tgs_rep2(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ_BODY *b,
+ PA_DATA *tgs_req,
+ krb5_data *reply,
+ const char *from,
+ const struct sockaddr *from_addr,
+ time_t **csec,
+ int **cusec)
+{
+ krb5_ap_req ap_req;
+ krb5_error_code ret;
+ krb5_principal princ;
+ krb5_auth_context ac = NULL;
+ krb5_ticket *ticket = NULL;
+ krb5_flags ap_req_options;
+ krb5_flags verify_ap_req_flags;
+ const char *e_text = NULL;
+ krb5_crypto crypto;
+
+ hdb_entry *krbtgt = NULL;
+ EncTicketPart *tgt;
+ Key *tkey;
+ krb5_enctype cetype;
+ krb5_principal cp = NULL;
+ krb5_principal sp = NULL;
+ AuthorizationData *auth_data = NULL;
+
+ *csec = NULL;
+ *cusec = NULL;
+
+ memset(&ap_req, 0, sizeof(ap_req));
+ ret = krb5_decode_ap_req(context, &tgs_req->padata_value, &ap_req);
+ if(ret){
+ kdc_log(context, config, 0, "Failed to decode AP-REQ: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+
+ if(!get_krbtgt_realm(&ap_req.ticket.sname)){
+ /* XXX check for ticket.sname == req.sname */
+ kdc_log(context, config, 0, "PA-DATA is not a ticket-granting ticket");
+ ret = KRB5KDC_ERR_POLICY; /* ? */
+ goto out2;
+ }
+
+ _krb5_principalname2krb5_principal(&princ,
+ ap_req.ticket.sname,
+ ap_req.ticket.realm);
+
+ ret = _kdc_db_fetch(context, config, princ, HDB_ENT_TYPE_SERVER, &krbtgt);
+
+ if(ret) {
+ char *p;
+ ret = krb5_unparse_name(context, princ, &p);
+ if (ret != 0)
+ p = "<unparse_name failed>";
+ krb5_free_principal(context, princ);
+ kdc_log(context, config, 0,
+ "Ticket-granting ticket not found in database: %s: %s",
+ p, krb5_get_err_text(context, ret));
+ if (ret == 0)
+ free(p);
+ ret = KRB5KRB_AP_ERR_NOT_US;
+ goto out2;
+ }
+
+ if(ap_req.ticket.enc_part.kvno &&
+ *ap_req.ticket.enc_part.kvno != krbtgt->kvno){
+ char *p;
+
+ ret = krb5_unparse_name (context, princ, &p);
+ krb5_free_principal(context, princ);
+ if (ret != 0)
+ p = "<unparse_name failed>";
+ kdc_log(context, config, 0,
+ "Ticket kvno = %d, DB kvno = %d (%s)",
+ *ap_req.ticket.enc_part.kvno,
+ krbtgt->kvno,
+ p);
+ if (ret == 0)
+ free (p);
+ ret = KRB5KRB_AP_ERR_BADKEYVER;
+ goto out2;
+ }
+
+ ret = hdb_enctype2key(context, krbtgt, ap_req.ticket.enc_part.etype, &tkey);
+ if(ret){
+ char *str;
+ krb5_enctype_to_string(context, ap_req.ticket.enc_part.etype, &str);
+ kdc_log(context, config, 0,
+ "No server key found for %s", str);
+ free(str);
+ ret = KRB5KRB_AP_ERR_BADKEYVER;
+ goto out2;
+ }
+
+ if (b->kdc_options.validate)
+ verify_ap_req_flags = KRB5_VERIFY_AP_REQ_IGNORE_INVALID;
+ else
+ verify_ap_req_flags = 0;
+
+ ret = krb5_verify_ap_req2(context,
+ &ac,
+ &ap_req,
+ princ,
+ &tkey->key,
+ verify_ap_req_flags,
+ &ap_req_options,
+ &ticket,
+ KRB5_KU_TGS_REQ_AUTH);
+
+ krb5_free_principal(context, princ);
+ if(ret) {
+ kdc_log(context, config, 0, "Failed to verify AP-REQ: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+
+ {
+ krb5_authenticator auth;
+
+ ret = krb5_auth_con_getauthenticator(context, ac, &auth);
+ if (ret == 0) {
+ *csec = malloc(sizeof(**csec));
+ if (*csec == NULL) {
+ krb5_free_authenticator(context, &auth);
+ kdc_log(context, config, 0, "malloc failed");
+ goto out2;
+ }
+ **csec = auth->ctime;
+ *cusec = malloc(sizeof(**cusec));
+ if (*cusec == NULL) {
+ krb5_free_authenticator(context, &auth);
+ kdc_log(context, config, 0, "malloc failed");
+ goto out2;
+ }
+ **csec = auth->cusec;
+ krb5_free_authenticator(context, &auth);
+ }
+ }
+
+ cetype = ap_req.authenticator.etype;
+
+ tgt = &ticket->ticket;
+
+ ret = tgs_check_authenticator(context, config,
+ ac, b, &e_text, &tgt->key);
+
+ if (b->enc_authorization_data) {
+ krb5_keyblock *subkey;
+ krb5_data ad;
+ ret = krb5_auth_con_getremotesubkey(context,
+ ac,
+ &subkey);
+ if(ret){
+ krb5_auth_con_free(context, ac);
+ kdc_log(context, config, 0, "Failed to get remote subkey: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+ if(subkey == NULL){
+ ret = krb5_auth_con_getkey(context, ac, &subkey);
+ if(ret) {
+ krb5_auth_con_free(context, ac);
+ kdc_log(context, config, 0, "Failed to get session key: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+ }
+ if(subkey == NULL){
+ krb5_auth_con_free(context, ac);
+ kdc_log(context, config, 0,
+ "Failed to get key for enc-authorization-data");
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY; /* ? */
+ goto out2;
+ }
+ ret = krb5_crypto_init(context, subkey, 0, &crypto);
+ if (ret) {
+ krb5_auth_con_free(context, ac);
+ kdc_log(context, config, 0, "krb5_crypto_init failed: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+ ret = krb5_decrypt_EncryptedData (context,
+ crypto,
+ KRB5_KU_TGS_REQ_AUTH_DAT_SUBKEY,
+ b->enc_authorization_data,
+ &ad);
+ krb5_crypto_destroy(context, crypto);
+ if(ret){
+ krb5_auth_con_free(context, ac);
+ kdc_log(context, config, 0, "Failed to decrypt enc-authorization-data");
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY; /* ? */
+ goto out2;
+ }
+ krb5_free_keyblock(context, subkey);
+ ALLOC(auth_data);
+ ret = decode_AuthorizationData(ad.data, ad.length, auth_data, NULL);
+ if(ret){
+ krb5_auth_con_free(context, ac);
+ free(auth_data);
+ auth_data = NULL;
+ kdc_log(context, config, 0, "Failed to decode authorization data");
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY; /* ? */
+ goto out2;
+ }
+ }
+
+ krb5_auth_con_free(context, ac);
+
+ if(ret){
+ kdc_log(context, config, 0, "Failed to verify authenticator: %s",
+ krb5_get_err_text(context, ret));
+ goto out2;
+ }
+
+ {
+ PrincipalName *s;
+ Realm r;
+ char *spn = NULL, *cpn = NULL;
+ hdb_entry *server = NULL, *client = NULL;
+ int nloop = 0;
+ EncTicketPart adtkt;
+ char opt_str[128];
+
+ s = b->sname;
+ r = b->realm;
+ if(b->kdc_options.enc_tkt_in_skey){
+ Ticket *t;
+ hdb_entry *uu;
+ krb5_principal p;
+ Key *uukey;
+
+ if(b->additional_tickets == NULL ||
+ b->additional_tickets->len == 0){
+ ret = KRB5KDC_ERR_BADOPTION; /* ? */
+ kdc_log(context, config, 0,
+ "No second ticket present in request");
+ goto out;
+ }
+ t = &b->additional_tickets->val[0];
+ if(!get_krbtgt_realm(&t->sname)){
+ kdc_log(context, config, 0,
+ "Additional ticket is not a ticket-granting ticket");
+ ret = KRB5KDC_ERR_POLICY;
+ goto out2;
+ }
+ _krb5_principalname2krb5_principal(&p, t->sname, t->realm);
+ ret = _kdc_db_fetch(context, config, p, HDB_ENT_TYPE_SERVER, &uu);
+ krb5_free_principal(context, p);
+ if(ret){
+ if (ret == HDB_ERR_NOENTRY)
+ ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN;
+ goto out;
+ }
+ ret = hdb_enctype2key(context, uu, t->enc_part.etype, &uukey);
+ if(ret){
+ ret = KRB5KDC_ERR_ETYPE_NOSUPP; /* XXX */
+ goto out;
+ }
+ ret = krb5_decrypt_ticket(context, t, &uukey->key, &adtkt, 0);
+
+ if(ret)
+ goto out;
+ s = &adtkt.cname;
+ r = adtkt.crealm;
+ }
+
+ _krb5_principalname2krb5_principal(&sp, *s, r);
+ ret = krb5_unparse_name(context, sp, &spn);
+ if (ret)
+ goto out;
+ _krb5_principalname2krb5_principal(&cp, tgt->cname, tgt->crealm);
+ ret = krb5_unparse_name(context, cp, &cpn);
+ if (ret)
+ goto out;
+ unparse_flags (KDCOptions2int(b->kdc_options),
+ asn1_KDCOptions_units(),
+ opt_str, sizeof(opt_str));
+ if(*opt_str)
+ kdc_log(context, config, 0,
+ "TGS-REQ %s from %s for %s [%s]",
+ cpn, from, spn, opt_str);
+ else
+ kdc_log(context, config, 0,
+ "TGS-REQ %s from %s for %s", cpn, from, spn);
+ server_lookup:
+ ret = _kdc_db_fetch(context, config, sp, HDB_ENT_TYPE_SERVER, &server);
+
+ if(ret){
+ const char *new_rlm;
+ Realm req_rlm;
+ krb5_realm *realms;
+
+ if ((req_rlm = get_krbtgt_realm(&sp->name)) != NULL) {
+ if(nloop++ < 2) {
+ new_rlm = find_rpath(context, tgt->crealm, req_rlm);
+ if(new_rlm) {
+ kdc_log(context, config, 5, "krbtgt for realm %s not found, trying %s",
+ req_rlm, new_rlm);
+ krb5_free_principal(context, sp);
+ free(spn);
+ krb5_make_principal(context, &sp, r,
+ KRB5_TGS_NAME, new_rlm, NULL);
+ ret = krb5_unparse_name(context, sp, &spn);
+ if (ret)
+ goto out;
+ goto server_lookup;
+ }
+ }
+ } else if(need_referral(context, sp, &realms)) {
+ if (strcmp(realms[0], sp->realm) != 0) {
+ kdc_log(context, config, 5,
+ "Returning a referral to realm %s for "
+ "server %s that was not found",
+ realms[0], spn);
+ krb5_free_principal(context, sp);
+ free(spn);
+ krb5_make_principal(context, &sp, r, KRB5_TGS_NAME,
+ realms[0], NULL);
+ ret = krb5_unparse_name(context, sp, &spn);
+ if (ret)
+ goto out;
+ krb5_free_host_realm(context, realms);
+ goto server_lookup;
+ }
+ krb5_free_host_realm(context, realms);
+ }
+ kdc_log(context, config, 0,
+ "Server not found in database: %s: %s", spn,
+ krb5_get_err_text(context, ret));
+ if (ret == HDB_ERR_NOENTRY)
+ ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN;
+ goto out;
+ }
+
+ ret = _kdc_db_fetch(context, config, cp, HDB_ENT_TYPE_CLIENT, &client);
+ if(ret)
+ kdc_log(context, config, 1, "Client not found in database: %s: %s",
+ cpn, krb5_get_err_text(context, ret));
+#if 0
+ /* XXX check client only if same realm as krbtgt-instance */
+ if(ret){
+ kdc_log(context, config, 0,
+ "Client not found in database: %s: %s",
+ cpn, krb5_get_err_text(context, ret));
+ if (ret == HDB_ERR_NOENTRY)
+ ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN;
+ goto out;
+ }
+#endif
+
+ if(strcmp(krb5_principal_get_realm(context, sp),
+ krb5_principal_get_comp_string(context, krbtgt->principal, 1)) != 0) {
+ char *tpn;
+ ret = krb5_unparse_name(context, krbtgt->principal, &tpn);
+ kdc_log(context, config, 0,
+ "Request with wrong krbtgt: %s",
+ (ret == 0) ? tpn : "<unknown>");
+ if(ret == 0)
+ free(tpn);
+ ret = KRB5KRB_AP_ERR_NOT_US;
+ goto out;
+
+ }
+
+ ret = _kdc_check_flags(context, config,
+ client, cpn,
+ server, spn,
+ FALSE);
+ if(ret)
+ goto out;
+
+ if((b->kdc_options.validate || b->kdc_options.renew) &&
+ !krb5_principal_compare(context,
+ krbtgt->principal,
+ server->principal)){
+ kdc_log(context, config, 0, "Inconsistent request.");
+ ret = KRB5KDC_ERR_SERVER_NOMATCH;
+ goto out;
+ }
+
+ /* check for valid set of addresses */
+ if(!check_addresses(context, config, tgt->caddr, from_addr)) {
+ ret = KRB5KRB_AP_ERR_BADADDR;
+ kdc_log(context, config, 0, "Request from wrong address");
+ goto out;
+ }
+
+ ret = tgs_make_reply(context, config,
+ b,
+ tgt,
+ b->kdc_options.enc_tkt_in_skey ? &adtkt : NULL,
+ auth_data,
+ server,
+ client,
+ cp,
+ krbtgt,
+ &tkey->key,
+ cetype,
+ &e_text,
+ reply);
+
+ out:
+ free(spn);
+ free(cpn);
+
+ if(server)
+ _kdc_free_ent(context, server);
+ if(client)
+ _kdc_free_ent(context, client);
+ }
+ out2:
+ if(ret) {
+ krb5_mk_error(context,
+ ret,
+ e_text,
+ NULL,
+ cp,
+ sp,
+ NULL,
+ NULL,
+ reply);
+ free(*csec);
+ free(*cusec);
+ *csec = NULL;
+ *cusec = NULL;
+ }
+ krb5_free_principal(context, cp);
+ krb5_free_principal(context, sp);
+ if (ticket)
+ krb5_free_ticket(context, ticket);
+ free_AP_REQ(&ap_req);
+ if(auth_data){
+ free_AuthorizationData(auth_data);
+ free(auth_data);
+ }
+
+ if(krbtgt)
+ _kdc_free_ent(context, krbtgt);
+
+ return ret;
+}
+
+
+krb5_error_code
+_kdc_tgs_rep(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ *req,
+ krb5_data *data,
+ const char *from,
+ struct sockaddr *from_addr)
+{
+ krb5_error_code ret;
+ int i = 0;
+ PA_DATA *tgs_req = NULL;
+ time_t *csec = NULL;
+ int *cusec = NULL;
+
+ if(req->padata == NULL){
+ ret = KRB5KDC_ERR_PREAUTH_REQUIRED; /* XXX ??? */
+ kdc_log(context, config, 0,
+ "TGS-REQ from %s without PA-DATA", from);
+ goto out;
+ }
+
+ tgs_req = find_padata(req, &i, KRB5_PADATA_TGS_REQ);
+
+ if(tgs_req == NULL){
+ ret = KRB5KDC_ERR_PADATA_TYPE_NOSUPP;
+
+ kdc_log(context, config, 0,
+ "TGS-REQ from %s without PA-TGS-REQ", from);
+ goto out;
+ }
+ ret = tgs_rep2(context, config,
+ &req->req_body, tgs_req, data, from, from_addr,
+ &csec, &cusec);
+out:
+ if(ret && data->data == NULL){
+ krb5_mk_error(context,
+ ret,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ csec,
+ cusec,
+ data);
+ }
+ free(csec);
+ free(cusec);
+ return 0;
+}
diff --git a/source4/heimdal/kdc/log.c b/source4/heimdal/kdc/log.c
new file mode 100644
index 0000000000..c316b0c5f8
--- /dev/null
+++ b/source4/heimdal/kdc/log.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 1997, 1998, 2002 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+RCSID("$Id: log.c,v 1.16 2005/06/30 01:52:48 lha Exp $");
+
+void
+kdc_openlog(krb5_context context,
+ krb5_kdc_configuration *config)
+{
+ char **s = NULL, **p;
+ krb5_initlog(context, "kdc", &config->logf);
+ s = krb5_config_get_strings(context, NULL, "kdc", "logging", NULL);
+ if(s == NULL)
+ s = krb5_config_get_strings(context, NULL, "logging", "kdc", NULL);
+ if(s){
+ for(p = s; *p; p++)
+ krb5_addlog_dest(context, config->logf, *p);
+ krb5_config_free_strings(s);
+ }else
+ krb5_addlog_dest(context, config->logf, DEFAULT_LOG_DEST);
+ krb5_set_warn_dest(context, config->logf);
+}
+
+char*
+kdc_log_msg_va(krb5_context context,
+ krb5_kdc_configuration *config,
+ int level, const char *fmt, va_list ap)
+{
+ char *msg;
+ krb5_vlog_msg(context, config->logf, &msg, level, fmt, ap);
+ return msg;
+}
+
+char*
+kdc_log_msg(krb5_context context,
+ krb5_kdc_configuration *config,
+ int level, const char *fmt, ...)
+{
+ va_list ap;
+ char *s;
+ va_start(ap, fmt);
+ s = kdc_log_msg_va(context, config, level, fmt, ap);
+ va_end(ap);
+ return s;
+}
+
+void
+kdc_log(krb5_context context,
+ krb5_kdc_configuration *config,
+ int level, const char *fmt, ...)
+{
+ va_list ap;
+ char *s;
+ va_start(ap, fmt);
+ s = kdc_log_msg_va(context, config, level, fmt, ap);
+ if(s) free(s);
+ va_end(ap);
+}
diff --git a/source4/heimdal/kdc/misc.c b/source4/heimdal/kdc/misc.c
new file mode 100644
index 0000000000..5a251607b6
--- /dev/null
+++ b/source4/heimdal/kdc/misc.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+RCSID("$Id: misc.c,v 1.25 2005/06/30 01:53:48 lha Exp $");
+
+struct timeval _kdc_now;
+
+krb5_error_code
+_kdc_db_fetch(krb5_context context,
+ krb5_kdc_configuration *config,
+ krb5_principal principal, enum hdb_ent_type ent_type,
+ hdb_entry **h)
+{
+ hdb_entry *ent;
+ krb5_error_code ret = HDB_ERR_NOENTRY;
+ int i;
+
+ ent = malloc (sizeof (*ent));
+ if (ent == NULL)
+ return ENOMEM;
+ ent->principal = principal;
+
+ for(i = 0; i < config->num_db; i++) {
+ ret = config->db[i]->hdb_open(context, config->db[i], O_RDONLY, 0);
+ if (ret) {
+ kdc_log(context, config, 0, "Failed to open database: %s",
+ krb5_get_err_text(context, ret));
+ continue;
+ }
+ ret = config->db[i]->hdb_fetch(context,
+ config->db[i],
+ HDB_F_DECRYPT,
+ principal,
+ ent_type,
+ ent);
+ config->db[i]->hdb_close(context, config->db[i]);
+ if(ret == 0) {
+ *h = ent;
+ return 0;
+ }
+ }
+ free(ent);
+ return ret;
+}
+
+void
+_kdc_free_ent(krb5_context context, hdb_entry *ent)
+{
+ hdb_free_entry (context, ent);
+ free (ent);
+}
+
diff --git a/source4/heimdal/kdc/pkinit.c b/source4/heimdal/kdc/pkinit.c
new file mode 100755
index 0000000000..d83e1d3b2e
--- /dev/null
+++ b/source4/heimdal/kdc/pkinit.c
@@ -0,0 +1,1607 @@
+/*
+ * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+RCSID("$Id: pkinit.c,v 1.36 2005/07/01 15:37:24 lha Exp $");
+
+#ifdef PKINIT
+
+#include <heim_asn1.h>
+#include <rfc2459_asn1.h>
+#include <cms_asn1.h>
+#include <pkinit_asn1.h>
+
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/bn.h>
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+
+/* XXX copied from lib/krb5/pkinit.c */
+struct krb5_pk_identity {
+ EVP_PKEY *private_key;
+ STACK_OF(X509) *cert;
+ STACK_OF(X509) *trusted_certs;
+ STACK_OF(X509_CRL) *crls;
+ ENGINE *engine;
+};
+
+/* XXX copied from lib/krb5/pkinit.c */
+struct krb5_pk_cert {
+ X509 *cert;
+};
+
+enum pkinit_type {
+ PKINIT_COMPAT_WIN2K = 1,
+ PKINIT_COMPAT_19 = 2,
+ PKINIT_COMPAT_25 = 3
+};
+
+struct pk_client_params {
+ enum pkinit_type type;
+ BIGNUM *dh_public_key;
+ struct krb5_pk_cert *certificate;
+ unsigned nonce;
+ DH *dh;
+ EncryptionKey reply_key;
+};
+
+struct pk_principal_mapping {
+ unsigned int len;
+ struct pk_allowed_princ {
+ krb5_principal principal;
+ char *subject;
+ } *val;
+};
+
+/* XXX copied from lib/krb5/pkinit.c */
+#define OPENSSL_ASN1_MALLOC_ENCODE(T, B, BL, S, R) \
+{ \
+ unsigned char *p; \
+ (BL) = i2d_##T((S), NULL); \
+ if ((BL) <= 0) { \
+ (R) = EINVAL; \
+ } else { \
+ (B) = malloc((BL)); \
+ if ((B) == NULL) { \
+ (R) = ENOMEM; \
+ } else { \
+ p = (B); \
+ (R) = 0; \
+ (BL) = i2d_##T((S), &p); \
+ if ((BL) <= 0) { \
+ free((B)); \
+ (R) = ASN1_OVERRUN; \
+ } \
+ } \
+ } \
+}
+
+static struct krb5_pk_identity *kdc_identity;
+static struct pk_principal_mapping principal_mappings;
+
+/*
+ *
+ */
+
+static krb5_error_code
+pk_check_pkauthenticator_win2k(krb5_context context,
+ PKAuthenticator_Win2k *a,
+ KDC_REQ *req)
+{
+ krb5_timestamp now;
+
+ krb5_timeofday (context, &now);
+
+ /* XXX cusec */
+ if (a->ctime == 0 || abs(a->ctime - now) > context->max_skew) {
+ krb5_clear_error_string(context);
+ return KRB5KRB_AP_ERR_SKEW;
+ }
+ return 0;
+}
+
+static krb5_error_code
+pk_check_pkauthenticator_19(krb5_context context,
+ PKAuthenticator_19 *a,
+ KDC_REQ *req)
+{
+ u_char *buf = NULL;
+ size_t buf_size;
+ krb5_error_code ret;
+ size_t len;
+ krb5_timestamp now;
+
+ krb5_timeofday (context, &now);
+
+ /* XXX cusec */
+ if (a->ctime == 0 || abs(a->ctime - now) > context->max_skew) {
+ krb5_clear_error_string(context);
+ return KRB5KRB_AP_ERR_SKEW;
+ }
+
+ if (a->paChecksum.cksumtype != CKSUMTYPE_RSA_MD5 &&
+ a->paChecksum.cksumtype != CKSUMTYPE_SHA1)
+ {
+ krb5_clear_error_string(context);
+ ret = KRB5KRB_ERR_GENERIC;
+ }
+
+ ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, &req->req_body, &len, ret);
+ if (ret) {
+ krb5_clear_error_string(context);
+ return ret;
+ }
+ if (buf_size != len)
+ krb5_abortx(context, "Internal error in ASN.1 encoder");
+
+ ret = krb5_verify_checksum(context, NULL, 0, buf, len,
+ &a->paChecksum);
+ if (ret)
+ krb5_clear_error_string(context);
+
+ free(buf);
+ return ret;
+}
+
+static krb5_error_code
+pk_check_pkauthenticator(krb5_context context,
+ PKAuthenticator *a,
+ KDC_REQ *req)
+{
+ u_char *buf = NULL;
+ size_t buf_size;
+ krb5_error_code ret;
+ size_t len;
+ krb5_timestamp now;
+ Checksum checksum;
+
+ krb5_timeofday (context, &now);
+
+ /* XXX cusec */
+ if (a->ctime == 0 || abs(a->ctime - now) > context->max_skew) {
+ krb5_clear_error_string(context);
+ return KRB5KRB_AP_ERR_SKEW;
+ }
+
+ ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, &req->req_body, &len, ret);
+ if (ret) {
+ krb5_clear_error_string(context);
+ return ret;
+ }
+ if (buf_size != len)
+ krb5_abortx(context, "Internal error in ASN.1 encoder");
+
+ ret = krb5_create_checksum(context,
+ NULL,
+ 0,
+ CKSUMTYPE_SHA1,
+ buf,
+ len,
+ &checksum);
+ free(buf);
+ if (ret) {
+ krb5_clear_error_string(context);
+ return ret;
+ }
+
+ if (a->paChecksum.length != checksum.checksum.length ||
+ memcmp(a->paChecksum.data, checksum.checksum.data,
+ checksum.checksum.length) != 0)
+ {
+ krb5_clear_error_string(context);
+ ret = KRB5KRB_ERR_GENERIC;
+ }
+ free_Checksum(&checksum);
+
+ return ret;
+}
+
+static krb5_error_code
+pk_encrypt_key(krb5_context context,
+ krb5_keyblock *key,
+ EVP_PKEY *public_key,
+ krb5_data *encrypted_key,
+ const heim_oid **oid)
+{
+ krb5_error_code ret;
+
+ encrypted_key->length = EVP_PKEY_size(public_key);
+
+ if (encrypted_key->length < key->keyvalue.length + 11) { /* XXX */
+ krb5_set_error_string(context, "pkinit: encrypted key too long");
+ return KRB5KRB_ERR_GENERIC;
+ }
+
+ encrypted_key->data = malloc(encrypted_key->length);
+ if (encrypted_key->data == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ ret = EVP_PKEY_encrypt(encrypted_key->data,
+ key->keyvalue.data,
+ key->keyvalue.length,
+ public_key);
+ if (ret < 0) {
+ free(encrypted_key->data);
+ krb5_set_error_string(context, "Can't encrypt key: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+ return KRB5KRB_ERR_GENERIC;
+ }
+ if (encrypted_key->length != ret)
+ krb5_abortx(context, "size of EVP_PKEY_size is not the "
+ "size of the output");
+
+ *oid = oid_id_pkcs1_rsaEncryption();
+
+ return 0;
+}
+
+void
+_kdc_pk_free_client_param(krb5_context context,
+ pk_client_params *client_params)
+{
+ if (client_params->certificate)
+ _krb5_pk_cert_free(client_params->certificate);
+ if (client_params->dh)
+ DH_free(client_params->dh);
+ if (client_params->dh_public_key)
+ BN_free(client_params->dh_public_key);
+ krb5_free_keyblock_contents(context, &client_params->reply_key);
+ memset(client_params, 0, sizeof(*client_params));
+ free(client_params);
+}
+
+static krb5_error_code
+check_dh_params(DH *dh)
+{
+ /* XXX check the DH parameters come from 1st or 2nd Oeakley Group */
+ return 0;
+}
+
+static krb5_error_code
+generate_dh_keyblock(krb5_context context, pk_client_params *client_params,
+ krb5_enctype enctype, krb5_keyblock *reply_key)
+{
+ unsigned char *dh_gen_key = NULL;
+ krb5_keyblock key;
+ int dh_gen_keylen;
+ krb5_error_code ret;
+
+ memset(&key, 0, sizeof(key));
+
+ dh_gen_key = malloc(DH_size(client_params->dh));
+ if (dh_gen_key == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ if (!DH_generate_key(client_params->dh)) {
+ krb5_set_error_string(context, "Can't generate Diffie-Hellman "
+ "keys (%s)",
+ ERR_error_string(ERR_get_error(), NULL));
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+ if (client_params->dh_public_key == NULL) {
+ krb5_set_error_string(context, "dh_public_key");
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ dh_gen_keylen = DH_compute_key(dh_gen_key,
+ client_params->dh_public_key,
+ client_params->dh);
+ if (dh_gen_keylen == -1) {
+ krb5_set_error_string(context, "Can't compute Diffie-Hellman key (%s)",
+ ERR_error_string(ERR_get_error(), NULL));
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ ret = krb5_random_to_key(context, enctype,
+ dh_gen_key, dh_gen_keylen, &key);
+
+ if (ret) {
+ krb5_set_error_string(context,
+ "pkinit - can't create key from DH key");
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+ ret = krb5_copy_keyblock_contents(context, &key, reply_key);
+
+ out:
+ if (dh_gen_key)
+ free(dh_gen_key);
+ if (key.keyvalue.data)
+ krb5_free_keyblock_contents(context, &key);
+
+ return ret;
+}
+
+static BIGNUM *
+integer_to_BN(krb5_context context, const char *field, heim_integer *f)
+{
+ BIGNUM *bn;
+
+ bn = BN_bin2bn((const unsigned char *)f->data, f->length, NULL);
+ if (bn == NULL) {
+ krb5_set_error_string(context, "PKINIT: parsing BN failed %s", field);
+ return NULL;
+ }
+ bn->neg = f->negative;
+ return bn;
+}
+
+static krb5_error_code
+get_dh_param(krb5_context context, SubjectPublicKeyInfo *dh_key_info,
+ pk_client_params *client_params)
+{
+ DomainParameters dhparam;
+ DH *dh = NULL;
+ krb5_error_code ret;
+ int dhret;
+
+ memset(&dhparam, 0, sizeof(dhparam));
+
+ if (heim_oid_cmp(&dh_key_info->algorithm.algorithm, oid_id_dhpublicnumber())) {
+ krb5_set_error_string(context,
+ "PKINIT invalid oid in clientPublicValue");
+ return KRB5_BADMSGTYPE;
+ }
+
+ if (dh_key_info->algorithm.parameters == NULL) {
+ krb5_set_error_string(context, "PKINIT missing algorithm parameter "
+ "in clientPublicValue");
+ return KRB5_BADMSGTYPE;
+ }
+
+ ret = decode_DomainParameters(dh_key_info->algorithm.parameters->data,
+ dh_key_info->algorithm.parameters->length,
+ &dhparam,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode algorithm "
+ "parameters in clientPublicValue");
+ goto out;
+ }
+
+ dh = DH_new();
+ if (dh == NULL) {
+ krb5_set_error_string(context, "Cannot create DH structure (%s)",
+ ERR_error_string(ERR_get_error(), NULL));
+ ret = ENOMEM;
+ goto out;
+ }
+ ret = KRB5_BADMSGTYPE;
+ dh->p = integer_to_BN(context, "DH prime", &dhparam.p);
+ if (dh->p == NULL)
+ goto out;
+ dh->g = integer_to_BN(context, "DH base", &dhparam.g);
+ if (dh->g == NULL)
+ goto out;
+ dh->q = integer_to_BN(context, "DH p-1 factor", &dhparam.q);
+ if (dh->g == NULL)
+ goto out;
+
+ {
+ heim_integer glue;
+ glue.data = dh_key_info->subjectPublicKey.data;
+ glue.length = dh_key_info->subjectPublicKey.length;
+
+ client_params->dh_public_key = integer_to_BN(context,
+ "subjectPublicKey",
+ &glue);
+ if (client_params->dh_public_key == NULL) {
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ }
+
+ if (DH_check(dh, &dhret) != 1) {
+ krb5_set_error_string(context, "PKINIT DH data not ok: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+ ret = KRB5_KDC_ERR_KEY_SIZE;
+ goto out;
+ }
+
+ client_params->dh = dh;
+ dh = NULL;
+ ret = 0;
+
+ out:
+ if (dh)
+ DH_free(dh);
+ free_DomainParameters(&dhparam);
+ return ret;
+}
+
+#if 0
+/*
+ * XXX We only need this function if there are several certs for the
+ * KDC to choose from, and right now, we can't handle that so punt for
+ * now.
+ *
+ * If client has sent a list of CA's trusted by him, make sure our
+ * CA is in the list.
+ *
+ */
+
+static void
+verify_trusted_ca(PA_PK_AS_REQ_19 *r)
+{
+
+ if (r.trustedCertifiers != NULL) {
+ X509_NAME *kdc_issuer;
+ X509 *kdc_cert;
+
+ kdc_cert = sk_X509_value(kdc_identity->cert, 0);
+ kdc_issuer = X509_get_issuer_name(kdc_cert);
+
+ /* XXX will work for heirarchical CA's ? */
+ /* XXX also serial_number should be compared */
+
+ ret = KRB5_KDC_ERR_KDC_NOT_TRUSTED;
+ for (i = 0; i < r.trustedCertifiers->len; i++) {
+ TrustedCA_19 *ca = &r.trustedCertifiers->val[i];
+
+ switch (ca->element) {
+ case choice_TrustedCA_19_caName: {
+ X509_NAME *name;
+ unsigned char *p;
+
+ p = ca->u.caName.data;
+ name = d2i_X509_NAME(NULL, &p, ca->u.caName.length);
+ if (name == NULL) /* XXX should this be a failure instead ? */
+ break;
+ if (X509_NAME_cmp(name, kdc_issuer) == 0)
+ ret = 0;
+ X509_NAME_free(name);
+ break;
+ }
+ case choice_TrustedCA_19_issuerAndSerial:
+ /* IssuerAndSerialNumber issuerAndSerial */
+ break;
+ default:
+ break;
+ }
+ if (ret == 0)
+ break;
+ }
+ if (ret)
+ goto out;
+ }
+}
+#endif /* 0 */
+
+krb5_error_code
+_kdc_pk_rd_padata(krb5_context context,
+ krb5_kdc_configuration *config,
+ KDC_REQ *req,
+ PA_DATA *pa,
+ pk_client_params **ret_params)
+{
+ pk_client_params *client_params;
+ krb5_error_code ret;
+ heim_oid eContentType = { 0, NULL };
+ krb5_data eContent = { 0, NULL };
+ krb5_data signed_content = { 0, NULL };
+ const char *type = "unknown type";
+ const heim_oid *pa_contentType;
+
+ *ret_params = NULL;
+
+ if (!config->enable_pkinit) {
+ krb5_clear_error_string(context);
+ return 0;
+ }
+
+ client_params = malloc(sizeof(*client_params));
+ if (client_params == NULL) {
+ krb5_clear_error_string(context);
+ ret = ENOMEM;
+ goto out;
+ }
+ memset(client_params, 0, sizeof(*client_params));
+
+ if (pa->padata_type == KRB5_PADATA_PK_AS_REQ_WIN) {
+ PA_PK_AS_REQ_Win2k r;
+ ContentInfo info;
+
+ type = "PK-INIT-Win2k";
+ pa_contentType = oid_id_pkcs7_data();
+
+ ret = decode_PA_PK_AS_REQ_Win2k(pa->padata_value.data,
+ pa->padata_value.length,
+ &r,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode "
+ "PK-AS-REQ-Win2k: %d", ret);
+ goto out;
+ }
+
+ ret = decode_ContentInfo(r.signed_auth_pack.data,
+ r.signed_auth_pack.length, &info, NULL);
+ free_PA_PK_AS_REQ_Win2k(&r);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode PK-AS-REQ: %d", ret);
+ goto out;
+ }
+
+ if (heim_oid_cmp(&info.contentType, oid_id_pkcs7_signedData())) {
+ krb5_set_error_string(context, "PK-AS-REQ-Win2k invalid content "
+ "type oid");
+ free_ContentInfo(&info);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ if (info.content == NULL) {
+ krb5_set_error_string(context,
+ "PK-AS-REQ-Win2k no signed auth pack");
+ free_ContentInfo(&info);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ signed_content.data = malloc(info.content->length);
+ if (signed_content.data == NULL) {
+ ret = ENOMEM;
+ free_ContentInfo(&info);
+ krb5_set_error_string(context, "PK-AS-REQ-Win2k out of memory");
+ goto out;
+ }
+ signed_content.length = info.content->length;
+ memcpy(signed_content.data, info.content->data, signed_content.length);
+
+ free_ContentInfo(&info);
+
+ } else if (pa->padata_type == KRB5_PADATA_PK_AS_REQ_19) {
+ PA_PK_AS_REQ_19 r;
+
+ type = "PK-INIT-19";
+ pa_contentType = oid_id_pkauthdata();
+
+ ret = decode_PA_PK_AS_REQ_19(pa->padata_value.data,
+ pa->padata_value.length,
+ &r,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode "
+ "PK-AS-REQ-19: %d", ret);
+ goto out;
+ }
+
+ if (heim_oid_cmp(&r.signedAuthPack.contentType,
+ oid_id_pkcs7_signedData()))
+ {
+ krb5_set_error_string(context, "PK-AS-REQ-19 invalid content "
+ "type oid");
+ free_PA_PK_AS_REQ_19(&r);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ if (r.signedAuthPack.content == NULL) {
+ krb5_set_error_string(context, "PK-AS-REQ-19 no signed auth pack");
+ free_PA_PK_AS_REQ_19(&r);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ signed_content.data = malloc(r.signedAuthPack.content->length);
+ if (signed_content.data == NULL) {
+ ret = ENOMEM;
+ free_PA_PK_AS_REQ_19(&r);
+ krb5_set_error_string(context, "PK-AS-REQ-19 out of memory");
+ goto out;
+ }
+ signed_content.length = r.signedAuthPack.content->length;
+ memcpy(signed_content.data, r.signedAuthPack.content->data,
+ signed_content.length);
+
+ free_PA_PK_AS_REQ_19(&r);
+ } else if (pa->padata_type == KRB5_PADATA_PK_AS_REQ) {
+ PA_PK_AS_REQ r;
+ ContentInfo info;
+
+ type = "PK-INIT-25";
+ pa_contentType = oid_id_pkauthdata();
+
+ ret = decode_PA_PK_AS_REQ(pa->padata_value.data,
+ pa->padata_value.length,
+ &r,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode PK-AS-REQ: %d", ret);
+ goto out;
+ }
+
+ ret = decode_ContentInfo(r.signedAuthPack.data,
+ r.signedAuthPack.length, &info, NULL);
+ if (ret) {
+ krb5_set_error_string(context, "Can't decode PK-AS-REQ: %d", ret);
+ goto out;
+ }
+
+ if (heim_oid_cmp(&info.contentType, oid_id_pkcs7_signedData())) {
+ krb5_set_error_string(context, "PK-AS-REQ invalid content "
+ "type oid");
+ free_ContentInfo(&info);
+ free_PA_PK_AS_REQ(&r);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ if (info.content == NULL) {
+ krb5_set_error_string(context, "PK-AS-REQ no signed auth pack");
+ free_PA_PK_AS_REQ(&r);
+ free_ContentInfo(&info);
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+
+ signed_content.data = malloc(info.content->length);
+ if (signed_content.data == NULL) {
+ ret = ENOMEM;
+ free_ContentInfo(&info);
+ free_PA_PK_AS_REQ(&r);
+ krb5_set_error_string(context, "PK-AS-REQ out of memory");
+ goto out;
+ }
+ signed_content.length = info.content->length;
+ memcpy(signed_content.data, info.content->data, signed_content.length);
+
+ free_ContentInfo(&info);
+ free_PA_PK_AS_REQ(&r);
+
+ } else {
+ krb5_clear_error_string(context);
+ ret = KRB5KDC_ERR_PADATA_TYPE_NOSUPP;
+ goto out;
+ }
+
+ ret = _krb5_pk_verify_sign(context,
+ signed_content.data,
+ signed_content.length,
+ kdc_identity,
+ &eContentType,
+ &eContent,
+ &client_params->certificate);
+ if (ret)
+ goto out;
+
+ /* Signature is correct, now verify the signed message */
+ if (heim_oid_cmp(&eContentType, pa_contentType)) {
+ krb5_set_error_string(context, "got wrong oid for pkauthdata");
+ ret = KRB5_BADMSGTYPE;
+ goto out;
+ }
+
+ if (pa->padata_type == KRB5_PADATA_PK_AS_REQ_WIN) {
+ AuthPack_Win2k ap;
+
+ ret = decode_AuthPack_Win2k(eContent.data,
+ eContent.length,
+ &ap,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "can't decode AuthPack: %d", ret);
+ goto out;
+ }
+
+ ret = pk_check_pkauthenticator_win2k(context,
+ &ap.pkAuthenticator,
+ req);
+ if (ret) {
+ free_AuthPack_Win2k(&ap);
+ goto out;
+ }
+
+ client_params->type = PKINIT_COMPAT_WIN2K;
+ client_params->nonce = ap.pkAuthenticator.nonce;
+
+ if (ap.clientPublicValue) {
+ krb5_set_error_string(context, "DH not supported for windows");
+ ret = KRB5KRB_ERR_GENERIC;
+ goto out;
+ }
+ free_AuthPack_Win2k(&ap);
+
+ } else if (pa->padata_type == KRB5_PADATA_PK_AS_REQ_19) {
+ AuthPack_19 ap;
+
+ ret = decode_AuthPack_19(eContent.data,
+ eContent.length,
+ &ap,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "can't decode AuthPack: %d", ret);
+ free_AuthPack_19(&ap);
+ goto out;
+ }
+
+ ret = pk_check_pkauthenticator_19(context,
+ &ap.pkAuthenticator,
+ req);
+ if (ret) {
+ free_AuthPack_19(&ap);
+ goto out;
+ }
+
+ client_params->type = PKINIT_COMPAT_19;
+ client_params->nonce = ap.pkAuthenticator.nonce;
+
+ if (ap.clientPublicValue) {
+ ret = get_dh_param(context, ap.clientPublicValue, client_params);
+ if (ret) {
+ free_AuthPack_19(&ap);
+ goto out;
+ }
+ }
+ free_AuthPack_19(&ap);
+ } else if (pa->padata_type == KRB5_PADATA_PK_AS_REQ) {
+ AuthPack ap;
+
+ ret = decode_AuthPack(eContent.data,
+ eContent.length,
+ &ap,
+ NULL);
+ if (ret) {
+ krb5_set_error_string(context, "can't decode AuthPack: %d", ret);
+ free_AuthPack(&ap);
+ goto out;
+ }
+
+ ret = pk_check_pkauthenticator(context,
+ &ap.pkAuthenticator,
+ req);
+ if (ret) {
+ free_AuthPack(&ap);
+ goto out;
+ }
+
+ client_params->type = PKINIT_COMPAT_25;
+ client_params->nonce = ap.pkAuthenticator.nonce;
+
+ if (ap.clientPublicValue) {
+ krb5_set_error_string(context, "PK-INIT, no support for DH");
+ ret = KRB5KDC_ERR_PADATA_TYPE_NOSUPP;
+ free_AuthPack(&ap);
+ goto out;
+ }
+ free_AuthPack(&ap);
+ } else
+ krb5_abortx(context, "internal pkinit error");
+
+ /*
+ * Remaining fields (ie kdcCert and encryptionCert) in the request
+ * are ignored for now.
+ */
+
+ kdc_log(context, config, 0, "PK-INIT request of type %s", type);
+
+ out:
+
+ if (signed_content.data)
+ free(signed_content.data);
+ krb5_data_free(&eContent);
+ free_oid(&eContentType);
+ if (ret)
+ _kdc_pk_free_client_param(context, client_params);
+ else
+ *ret_params = client_params;
+ return ret;
+}
+
+/*
+ *
+ */
+
+static krb5_error_code
+BN_to_integer(krb5_context context, BIGNUM *bn, heim_integer *integer)
+{
+ integer->length = BN_num_bytes(bn);
+ integer->data = malloc(integer->length);
+ if (integer->data == NULL) {
+ krb5_clear_error_string(context);
+ return ENOMEM;
+ }
+ BN_bn2bin(bn, integer->data);
+ integer->negative = bn->neg;
+ return 0;
+}
+
+static krb5_error_code
+pk_mk_pa_reply_enckey(krb5_context context,
+ pk_client_params *client_params,
+ const KDC_REQ *req,
+ krb5_keyblock *reply_key,
+ ContentInfo *content_info)
+{
+ KeyTransRecipientInfo *ri;
+ EnvelopedData ed;
+ krb5_error_code ret;
+ krb5_crypto crypto = NULL;
+ krb5_data buf, sd_data, enc_sd_data, iv, params;
+ krb5_keyblock tmp_key;
+ krb5_enctype enveloped_enctype;
+ X509_NAME *issuer_name;
+ heim_integer *serial;
+ size_t size;
+ AlgorithmIdentifier *enc_alg;
+ int i;
+
+ krb5_data_zero(&enc_sd_data);
+ krb5_data_zero(&sd_data);
+ krb5_data_zero(&iv);
+
+ memset(&tmp_key, 0, sizeof(tmp_key));
+ memset(&ed, 0, sizeof(ed));
+
+ /* default to DES3 if client doesn't tell us */
+ enveloped_enctype = ETYPE_DES3_CBC_NONE_CMS;
+
+ for (i = 0; i < req->req_body.etype.len; i++) {
+ switch(req->req_body.etype.val[i]) {
+ case 15: /* des-ede3-cbc-Env-OID */
+ enveloped_enctype = ETYPE_DES3_CBC_NONE_CMS;
+ break;
+ default:
+ break;
+ }
+ }
+
+ ret = krb5_generate_random_keyblock(context, enveloped_enctype, &tmp_key);
+ if (ret)
+ goto out;
+
+ ret = krb5_crypto_init(context, &tmp_key, 0, &crypto);
+ if (ret)
+ goto out;
+
+
+ ret = krb5_crypto_getblocksize(context, crypto, &iv.length);
+ if (ret)
+ goto out;
+
+ ret = krb5_data_alloc(&iv, iv.length);
+ if (ret) {
+ krb5_set_error_string(context, "malloc out of memory");
+ goto out;
+ }
+
+ krb5_generate_random_block(iv.data, iv.length);
+
+ enc_alg = &ed.encryptedContentInfo.contentEncryptionAlgorithm;
+
+ ret = krb5_enctype_to_oid(context, enveloped_enctype, &enc_alg->algorithm);
+ if (ret)
+ goto out;
+
+ ret = krb5_crypto_set_params(context, crypto, &iv, &params);
+ if (ret)
+ goto out;
+
+ ALLOC(enc_alg->parameters);
+ if (enc_alg->parameters == NULL) {
+ krb5_data_free(&params);
+ krb5_set_error_string(context, "malloc out of memory");
+ return ENOMEM;
+ }
+ enc_alg->parameters->data = params.data;
+ enc_alg->parameters->length = params.length;
+
+ if (client_params->type == PKINIT_COMPAT_WIN2K || client_params->type == PKINIT_COMPAT_19 || client_params->type == PKINIT_COMPAT_25) {
+ ReplyKeyPack kp;
+ memset(&kp, 0, sizeof(kp));
+
+ ret = copy_EncryptionKey(reply_key, &kp.replyKey);
+ if (ret) {
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ kp.nonce = client_params->nonce;
+
+ ASN1_MALLOC_ENCODE(ReplyKeyPack, buf.data, buf.length, &kp, &size,ret);
+ free_ReplyKeyPack(&kp);
+ } else {
+ krb5_abortx(context, "internal pkinit error");
+ }
+ if (ret) {
+ krb5_set_error_string(context, "ASN.1 encoding of ReplyKeyPack "
+ "failed (%d)", ret);
+ goto out;
+ }
+ if (buf.length != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ /*
+ * CRL's are not transfered -- should be ?
+ */
+
+ ret = _krb5_pk_create_sign(context,
+ oid_id_pkrkeydata(),
+ &buf,
+ kdc_identity,
+ &sd_data);
+ krb5_data_free(&buf);
+ if (ret)
+ goto out;
+
+ ret = krb5_encrypt_ivec(context, crypto, 0,
+ sd_data.data, sd_data.length,
+ &enc_sd_data,
+ iv.data);
+
+ ALLOC_SEQ(&ed.recipientInfos, 1);
+ if (ed.recipientInfos.val == NULL) {
+ krb5_clear_error_string(context);
+ ret = ENOMEM;
+ goto out;
+ }
+
+ ri = &ed.recipientInfos.val[0];
+
+ ri->version = 0;
+ ri->rid.element = choice_CMSIdentifier_issuerAndSerialNumber;
+
+ issuer_name = X509_get_issuer_name(client_params->certificate->cert);
+ OPENSSL_ASN1_MALLOC_ENCODE(X509_NAME, buf.data, buf.length,
+ issuer_name, ret);
+ if (ret) {
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ ret = decode_Name(buf.data, buf.length,
+ &ri->rid.u.issuerAndSerialNumber.issuer,
+ NULL);
+ free(buf.data);
+ if (ret) {
+ krb5_set_error_string(context, "pkinit: failed to parse Name");
+ goto out;
+ }
+
+ serial = &ri->rid.u.issuerAndSerialNumber.serialNumber;
+ {
+ ASN1_INTEGER *isn;
+ BIGNUM *bn;
+
+ isn = X509_get_serialNumber(client_params->certificate->cert);
+ bn = ASN1_INTEGER_to_BN(isn, NULL);
+ if (bn == NULL) {
+ ret = ENOMEM;
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ ret = BN_to_integer(context, bn, serial);
+ BN_free(bn);
+ if (ret) {
+ krb5_clear_error_string(context);
+ goto out;
+ }
+ }
+
+ {
+ const heim_oid *pk_enc_key_oid;
+ krb5_data enc_tmp_key;
+
+ ret = pk_encrypt_key(context, &tmp_key,
+ X509_get_pubkey(client_params->certificate->cert),
+ &enc_tmp_key,
+ &pk_enc_key_oid);
+ if (ret)
+ goto out;
+
+ ri->encryptedKey.length = enc_tmp_key.length;
+ ri->encryptedKey.data = enc_tmp_key.data;
+
+ ret = copy_oid(pk_enc_key_oid, &ri->keyEncryptionAlgorithm.algorithm);
+ if (ret)
+ goto out;
+ }
+
+ /*
+ *
+ */
+
+ ed.version = 0;
+ ed.originatorInfo = NULL;
+
+ ret = copy_oid(oid_id_pkcs7_signedData(), &ed.encryptedContentInfo.contentType);
+ if (ret) {
+ krb5_clear_error_string(context);
+ goto out;
+ }
+
+ ALLOC(ed.encryptedContentInfo.encryptedContent);
+ if (ed.encryptedContentInfo.encryptedContent == NULL) {
+ krb5_clear_error_string(context);
+ ret = ENOMEM;
+ goto out;
+ }
+
+ ed.encryptedContentInfo.encryptedContent->data = enc_sd_data.data;
+ ed.encryptedContentInfo.encryptedContent->length = enc_sd_data.length;
+ krb5_data_zero(&enc_sd_data);
+
+ ed.unprotectedAttrs = NULL;
+
+ ASN1_MALLOC_ENCODE(EnvelopedData, buf.data, buf.length, &ed, &size, ret);
+ if (ret) {
+ krb5_set_error_string(context,
+ "ASN.1 encoding of EnvelopedData failed (%d)",
+ ret);
+ goto out;
+ }
+
+ ret = _krb5_pk_mk_ContentInfo(context,
+ &buf,
+ oid_id_pkcs7_envelopedData(),
+ content_info);
+ krb5_data_free(&buf);
+
+ out:
+ if (crypto)
+ krb5_crypto_destroy(context, crypto);
+ krb5_free_keyblock_contents(context, &tmp_key);
+ krb5_data_free(&enc_sd_data);
+ krb5_data_free(&iv);
+ free_EnvelopedData(&ed);
+
+ return ret;
+}
+
+/*
+ *
+ */
+
+static krb5_error_code
+pk_mk_pa_reply_dh(krb5_context context,
+ DH *kdc_dh,
+ pk_client_params *client_params,
+ krb5_keyblock *reply_key,
+ ContentInfo *content_info)
+{
+ ASN1_INTEGER *dh_pub_key = NULL;
+ KDCDHKeyInfo dh_info;
+ krb5_error_code ret;
+ SignedData sd;
+ krb5_data buf, sd_buf;
+ size_t size;
+
+ memset(&dh_info, 0, sizeof(dh_info));
+ memset(&sd, 0, sizeof(sd));
+ krb5_data_zero(&buf);
+ krb5_data_zero(&sd_buf);
+
+ dh_pub_key = BN_to_ASN1_INTEGER(kdc_dh->pub_key, NULL);
+ if (dh_pub_key == NULL) {
+ krb5_set_error_string(context, "BN_to_ASN1_INTEGER() failed (%s)",
+ ERR_error_string(ERR_get_error(), NULL));
+ ret = ENOMEM;
+ goto out;
+ }
+
+ OPENSSL_ASN1_MALLOC_ENCODE(ASN1_INTEGER, buf.data, buf.length, dh_pub_key,
+ ret);
+ ASN1_INTEGER_free(dh_pub_key);
+ if (ret) {
+ krb5_set_error_string(context, "Encoding of ASN1_INTEGER failed (%s)",
+ ERR_error_string(ERR_get_error(), NULL));
+ goto out;
+ }
+
+ dh_info.subjectPublicKey.length = buf.length * 8;
+ dh_info.subjectPublicKey.data = buf.data;
+
+ dh_info.nonce = client_params->nonce;
+
+ ASN1_MALLOC_ENCODE(KDCDHKeyInfo, buf.data, buf.length, &dh_info, &size,
+ ret);
+ if (ret) {
+ krb5_set_error_string(context, "ASN.1 encoding of "
+ "KdcDHKeyInfo failed (%d)", ret);
+ goto out;
+ }
+ if (buf.length != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ /*
+ * Create the SignedData structure and sign the KdcDHKeyInfo
+ * filled in above
+ */
+
+ ret = _krb5_pk_create_sign(context,
+ oid_id_pkdhkeydata(),
+ &buf,
+ kdc_identity,
+ &sd_buf);
+ krb5_data_free(&buf);
+ if (ret)
+ goto out;
+
+ ret = _krb5_pk_mk_ContentInfo(context, &sd_buf, oid_id_pkcs7_signedData(),
+ content_info);
+ krb5_data_free(&sd_buf);
+
+ out:
+ free_KDCDHKeyInfo(&dh_info);
+
+ return ret;
+}
+
+/*
+ *
+ */
+
+krb5_error_code
+_kdc_pk_mk_pa_reply(krb5_context context,
+ krb5_kdc_configuration *config,
+ pk_client_params *client_params,
+ const hdb_entry *client,
+ const KDC_REQ *req,
+ krb5_keyblock **reply_key,
+ METHOD_DATA *md)
+{
+ krb5_error_code ret;
+ void *buf;
+ size_t len, size;
+ krb5_enctype enctype;
+ int pa_type;
+ int i;
+
+ if (!config->enable_pkinit) {
+ krb5_clear_error_string(context);
+ return 0;
+ }
+
+ if (req->req_body.etype.len > 0) {
+ for (i = 0; i < req->req_body.etype.len; i++)
+ if (krb5_enctype_valid(context, req->req_body.etype.val[i]) == 0)
+ break;
+ if (req->req_body.etype.len <= i) {
+ ret = KRB5KRB_ERR_GENERIC;
+ krb5_set_error_string(context,
+ "No valid enctype available from client");
+ goto out;
+ }
+ enctype = req->req_body.etype.val[i];
+ } else
+ enctype = ETYPE_DES3_CBC_SHA1;
+
+ if (client_params->type == PKINIT_COMPAT_25) {
+ PA_PK_AS_REP rep;
+
+ pa_type = KRB5_PADATA_PK_AS_REP;
+
+ memset(&rep, 0, sizeof(rep));
+
+ if (client_params->dh == NULL) {
+ rep.element = choice_PA_PK_AS_REP_encKeyPack;
+ ContentInfo info;
+
+ krb5_generate_random_keyblock(context, enctype,
+ &client_params->reply_key);
+ ret = pk_mk_pa_reply_enckey(context,
+ client_params,
+ req,
+ &client_params->reply_key,
+ &info);
+ if (ret) {
+ free_PA_PK_AS_REP(&rep);
+ goto out;
+ }
+ ASN1_MALLOC_ENCODE(ContentInfo, rep.u.encKeyPack.data,
+ rep.u.encKeyPack.length, &info, &size,
+ ret);
+ free_ContentInfo(&info);
+ if (ret) {
+ krb5_set_error_string(context, "encoding of Key ContentInfo "
+ "failed %d", ret);
+ free_PA_PK_AS_REP(&rep);
+ goto out;
+ }
+ if (rep.u.encKeyPack.length != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ } else {
+ krb5_set_error_string(context, "DH -25 not implemented");
+ ret = KRB5KRB_ERR_GENERIC;
+ }
+ if (ret) {
+ free_PA_PK_AS_REP(&rep);
+ goto out;
+ }
+
+ ASN1_MALLOC_ENCODE(PA_PK_AS_REP, buf, len, &rep, &size, ret);
+ free_PA_PK_AS_REP(&rep);
+ if (ret) {
+ krb5_set_error_string(context, "encode PA-PK-AS-REP failed %d",
+ ret);
+ goto out;
+ }
+ if (len != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ } else if (client_params->type == PKINIT_COMPAT_19) {
+ PA_PK_AS_REP_19 rep;
+
+ pa_type = KRB5_PADATA_PK_AS_REP_19;
+
+ memset(&rep, 0, sizeof(rep));
+
+ if (client_params->dh == NULL) {
+ rep.element = choice_PA_PK_AS_REP_19_encKeyPack;
+ krb5_generate_random_keyblock(context, enctype,
+ &client_params->reply_key);
+ ret = pk_mk_pa_reply_enckey(context,
+ client_params,
+ req,
+ &client_params->reply_key,
+ &rep.u.encKeyPack);
+ } else {
+ rep.element = choice_PA_PK_AS_REP_19_dhSignedData;
+
+ ret = check_dh_params(client_params->dh);
+ if (ret)
+ return ret;
+
+ ret = generate_dh_keyblock(context, client_params, enctype,
+ &client_params->reply_key);
+ if (ret)
+ return ret;
+
+ ret = pk_mk_pa_reply_dh(context, client_params->dh,
+ client_params,
+ &client_params->reply_key,
+ &rep.u.dhSignedData);
+ }
+ if (ret) {
+ free_PA_PK_AS_REP_19(&rep);
+ goto out;
+ }
+
+ ASN1_MALLOC_ENCODE(PA_PK_AS_REP_19, buf, len, &rep, &size, ret);
+ free_PA_PK_AS_REP_19(&rep);
+ if (ret) {
+ krb5_set_error_string(context,
+ "encode PA-PK-AS-REP-19 failed %d", ret);
+ goto out;
+ }
+ if (len != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+ } else if (client_params->type == PKINIT_COMPAT_WIN2K) {
+ PA_PK_AS_REP_Win2k rep;
+
+ pa_type = KRB5_PADATA_PK_AS_REP_19;
+
+ memset(&rep, 0, sizeof(rep));
+
+ if (client_params->dh) {
+ krb5_set_error_string(context, "DH -25 not implemented");
+ ret = KRB5KRB_ERR_GENERIC;
+ } else {
+ rep.element = choice_PA_PK_AS_REP_encKeyPack;
+ ContentInfo info;
+
+ krb5_generate_random_keyblock(context, enctype,
+ &client_params->reply_key);
+ ret = pk_mk_pa_reply_enckey(context,
+ client_params,
+ req,
+ &client_params->reply_key,
+ &info);
+ if (ret) {
+ free_PA_PK_AS_REP_Win2k(&rep);
+ goto out;
+ }
+ ASN1_MALLOC_ENCODE(ContentInfo, rep.u.encKeyPack.data,
+ rep.u.encKeyPack.length, &info, &size,
+ ret);
+ free_ContentInfo(&info);
+ if (ret) {
+ krb5_set_error_string(context, "encoding of Key ContentInfo "
+ "failed %d", ret);
+ free_PA_PK_AS_REP_Win2k(&rep);
+ goto out;
+ }
+ if (rep.u.encKeyPack.length != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ }
+ if (ret) {
+ free_PA_PK_AS_REP_Win2k(&rep);
+ goto out;
+ }
+
+ ASN1_MALLOC_ENCODE(PA_PK_AS_REP_Win2k, buf, len, &rep, &size, ret);
+ free_PA_PK_AS_REP_Win2k(&rep);
+ if (ret) {
+ krb5_set_error_string(context,
+ "encode PA-PK-AS-REP-Win2k failed %d", ret);
+ goto out;
+ }
+ if (len != size)
+ krb5_abortx(context, "Internal ASN.1 encoder error");
+
+ } else
+ krb5_abortx(context, "PK-INIT internal error");
+
+
+ ret = krb5_padata_add(context, md, pa_type, buf, len);
+ if (ret) {
+ krb5_set_error_string(context, "failed adding "
+ "PA-PK-AS-REP-19 %d", ret);
+ free(buf);
+ }
+ out:
+ if (ret == 0)
+ *reply_key = &client_params->reply_key;
+ return ret;
+}
+
+static int
+pk_principal_from_X509(krb5_context context,
+ krb5_kdc_configuration *config,
+ struct krb5_pk_cert *client_cert,
+ krb5_principal *principal)
+{
+ krb5_error_code ret;
+ GENERAL_NAMES *gens;
+ GENERAL_NAME *gen;
+ ASN1_OBJECT *obj;
+ int i;
+
+ *principal = NULL;
+
+ obj = OBJ_txt2obj("1.3.6.1.5.2.2",1);
+
+ gens = X509_get_ext_d2i(client_cert->cert, NID_subject_alt_name,
+ NULL, NULL);
+ if (gens == NULL)
+ return 1;
+
+ for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+ KRB5PrincipalName kn;
+ size_t len, size;
+ void *p;
+
+ gen = sk_GENERAL_NAME_value(gens, i);
+ if (gen->type != GEN_OTHERNAME)
+ continue;
+
+ if(OBJ_cmp(obj, gen->d.otherName->type_id) != 0)
+ continue;
+
+ p = ASN1_STRING_data(gen->d.otherName->value->value.sequence);
+ len = ASN1_STRING_length(gen->d.otherName->value->value.sequence);
+
+ ret = decode_KRB5PrincipalName(p, len, &kn, &size);
+ if (ret) {
+ kdc_log(context, config, 0,
+ "Decoding kerberos name in certificate failed: %s",
+ krb5_get_err_text(context, ret));
+ continue;
+ }
+
+ *principal = malloc(sizeof(**principal));
+ if (*principal == NULL) {
+ free_KRB5PrincipalName(&kn);
+ return 1;
+ }
+
+ (*principal)->name = kn.principalName;
+ (*principal)->realm = kn.realm;
+ return 0;
+ }
+ return 1;
+}
+
+
+/* XXX match with issuer too ? */
+
+krb5_error_code
+_kdc_pk_check_client(krb5_context context,
+ krb5_kdc_configuration *config,
+ krb5_principal client_princ,
+ const hdb_entry *client,
+ pk_client_params *client_params,
+ char **subject_name)
+{
+ struct krb5_pk_cert *client_cert = client_params->certificate;
+ krb5_principal cert_princ;
+ X509_NAME *name;
+ char *subject = NULL;
+ krb5_error_code ret;
+ krb5_boolean b;
+ int i;
+
+ *subject_name = NULL;
+
+ name = X509_get_subject_name(client_cert->cert);
+ if (name == NULL) {
+ krb5_set_error_string(context, "PKINIT can't get subject name");
+ return ENOMEM;
+ }
+ subject = X509_NAME_oneline(name, NULL, 0);
+ if (subject == NULL) {
+ krb5_set_error_string(context, "PKINIT can't get subject name");
+ return ENOMEM;
+ }
+ *subject_name = strdup(subject);
+ if (*subject_name == NULL) {
+ krb5_set_error_string(context, "out of memory");
+ return ENOMEM;
+ }
+ OPENSSL_free(subject);
+
+ if (config->enable_pkinit_princ_in_cert) {
+ ret = pk_principal_from_X509(context, config,
+ client_cert, &cert_princ);
+ if (ret == 0) {
+ b = krb5_principal_compare(context, client_princ, cert_princ);
+ krb5_free_principal(context, cert_princ);
+ if (b == TRUE)
+ return 0;
+ }
+ }
+
+ for (i = 0; i < principal_mappings.len; i++) {
+ b = krb5_principal_compare(context,
+ client_princ,
+ principal_mappings.val[i].principal);
+ if (b == FALSE)
+ continue;
+ if (strcmp(principal_mappings.val[i].subject, *subject_name) != 0)
+ continue;
+ return 0;
+ }
+ free(*subject_name);
+ *subject_name = NULL;
+ krb5_set_error_string(context, "PKINIT no matching principals");
+ return KRB5_KDC_ERROR_CLIENT_NAME_MISMATCH;
+}
+
+static krb5_error_code
+add_principal_mapping(krb5_context context,
+ const char *principal_name,
+ const char * subject)
+{
+ struct pk_allowed_princ *tmp;
+ krb5_principal principal;
+ krb5_error_code ret;
+
+ tmp = realloc(principal_mappings.val,
+ (principal_mappings.len + 1) * sizeof(*tmp));
+ if (tmp == NULL)
+ return ENOMEM;
+ principal_mappings.val = tmp;
+
+ ret = krb5_parse_name(context, principal_name, &principal);
+ if (ret)
+ return ret;
+
+ principal_mappings.val[principal_mappings.len].principal = principal;
+
+ principal_mappings.val[principal_mappings.len].subject = strdup(subject);
+ if (principal_mappings.val[principal_mappings.len].subject == NULL) {
+ krb5_free_principal(context, principal);
+ return ENOMEM;
+ }
+ principal_mappings.len++;
+
+ return 0;
+}
+
+
+krb5_error_code
+_kdc_pk_initialize(krb5_context context,
+ krb5_kdc_configuration *config,
+ const char *user_id,
+ const char *x509_anchors)
+{
+ const char *mapping_file;
+ krb5_error_code ret;
+ char buf[1024];
+ unsigned long lineno = 0;
+ FILE *f;
+
+ principal_mappings.len = 0;
+ principal_mappings.val = NULL;
+
+ ret = _krb5_pk_load_openssl_id(context,
+ &kdc_identity,
+ user_id,
+ x509_anchors,
+ NULL,
+ NULL,
+ NULL);
+ if (ret) {
+ krb5_warn(context, ret, "PKINIT: failed to load");
+ config->enable_pkinit = 0;
+ return ret;
+ }
+
+ mapping_file = krb5_config_get_string_default(context,
+ NULL,
+ HDB_DB_DIR "/pki-mapping",
+ "kdc",
+ "pki-mappings-file",
+ NULL);
+ f = fopen(mapping_file, "r");
+ if (f == NULL) {
+ krb5_warnx(context, "PKINIT: failed to load mappings file %s",
+ mapping_file);
+ return 0;
+ }
+
+ while (fgets(buf, sizeof(buf), f) != NULL) {
+ char *subject_name, *p;
+
+ buf[strcspn(buf, "\n")] = '\0';
+ lineno++;
+
+ p = buf + strspn(buf, " \t");
+
+ if (*p == '#' || *p == '\0')
+ continue;
+
+ subject_name = strchr(p, ':');
+ if (subject_name == NULL) {
+ krb5_warnx(context, "pkinit mapping file line %lu "
+ "missing \":\" :%s",
+ lineno, buf);
+ continue;
+ }
+ *subject_name++ = '\0';
+
+ ret = add_principal_mapping(context, p, subject_name);
+ if (ret) {
+ krb5_warn(context, ret, "failed to add line %lu \":\" :%s\n",
+ lineno, buf);
+ continue;
+ }
+ }
+
+ fclose(f);
+
+ return 0;
+}
+
+#endif /* PKINIT */
diff --git a/source4/heimdal/kdc/process.c b/source4/heimdal/kdc/process.c
new file mode 100644
index 0000000000..22cf23c48d
--- /dev/null
+++ b/source4/heimdal/kdc/process.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ *
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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 "kdc_locl.h"
+
+RCSID("$Id: process.c,v 1.2 2005/06/30 01:54:49 lha Exp $");
+
+/*
+ * handle the request in `buf, len', from `addr' (or `from' as a string),
+ * sending a reply in `reply'.
+ */
+
+int
+krb5_kdc_process_generic_request(krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char *buf,
+ size_t len,
+ krb5_data *reply,
+ krb5_boolean *prependlength,
+ const char *from,
+ struct sockaddr *addr)
+{
+ KDC_REQ req;
+ Ticket ticket;
+ krb5_error_code ret;
+ size_t i;
+
+ gettimeofday(&_kdc_now, NULL);
+ if(decode_AS_REQ(buf, len, &req, &i) == 0){
+ ret = _kdc_as_rep(context, config, &req, reply, from, addr);
+ free_AS_REQ(&req);
+ return ret;
+ }else if(decode_TGS_REQ(buf, len, &req, &i) == 0){
+ ret = _kdc_tgs_rep(context, config, &req, reply, from, addr);
+ free_TGS_REQ(&req);
+ return ret;
+ }else if(decode_Ticket(buf, len, &ticket, &i) == 0){
+ ret = _kdc_do_524(context, config, &ticket, reply, from, addr);
+ free_Ticket(&ticket);
+ return ret;
+ } else if(_kdc_maybe_version4(buf, len)){
+ *prependlength = FALSE; /* elbitapmoc sdrawkcab XXX */
+ _kdc_do_version4(context, config, buf, len, reply, from,
+ (struct sockaddr_in*)addr);
+ return 0;
+ } else if (config->enable_kaserver) {
+ ret = _kdc_do_kaserver(context, config, buf, len, reply, from,
+ (struct sockaddr_in*)addr);
+ return ret;
+ }
+
+ return -1;
+}
+
+/*
+ * handle the request in `buf, len', from `addr' (or `from' as a string),
+ * sending a reply in `reply'.
+ *
+ * This only processes krb5 requests
+ */
+
+int
+krb5_kdc_process_krb5_request(krb5_context context,
+ krb5_kdc_configuration *config,
+ unsigned char *buf,
+ size_t len,
+ krb5_data *reply,
+ const char *from,
+ struct sockaddr *addr)
+{
+ KDC_REQ req;
+ krb5_error_code ret;
+ size_t i;
+
+ gettimeofday(&_kdc_now, NULL);
+ if(decode_AS_REQ(buf, len, &req, &i) == 0){
+ ret = _kdc_as_rep(context, config, &req, reply, from, addr);
+ free_AS_REQ(&req);
+ return ret;
+ }else if(decode_TGS_REQ(buf, len, &req, &i) == 0){
+ ret = _kdc_tgs_rep(context, config, &req, reply, from, addr);
+ free_TGS_REQ(&req);
+ return ret;
+ }
+ return -1;
+}
diff --git a/source4/heimdal/kdc/rx.h b/source4/heimdal/kdc/rx.h
new file mode 100644
index 0000000000..ab8ec80523
--- /dev/null
+++ b/source4/heimdal/kdc/rx.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 1997 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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.
+ */
+
+/* $Id: rx.h,v 1.4 1999/12/02 17:05:00 joda Exp $ */
+
+#ifndef __RX_H__
+#define __RX_H__
+
+/* header of a RPC packet */
+
+enum rx_header_type {
+ HT_DATA = 1,
+ HT_ACK = 2,
+ HT_BUSY = 3,
+ HT_ABORT = 4,
+ HT_ACKALL = 5,
+ HT_CHAL = 6,
+ HT_RESP = 7,
+ HT_DEBUG = 8
+};
+
+/* For flags in header */
+
+enum rx_header_flag {
+ HF_CLIENT_INITIATED = 1,
+ HF_REQ_ACK = 2,
+ HF_LAST = 4,
+ HF_MORE = 8
+};
+
+struct rx_header {
+ u_int32_t epoch;
+ u_int32_t connid; /* And channel ID */
+ u_int32_t callid;
+ u_int32_t seqno;
+ u_int32_t serialno;
+ u_char type;
+ u_char flags;
+ u_char status;
+ u_char secindex;
+ u_int16_t reserved; /* ??? verifier? */
+ u_int16_t serviceid;
+/* This should be the other way around according to everything but */
+/* tcpdump */
+};
+
+#define RX_HEADER_SIZE 28
+
+#endif /* __RX_H__ */
generated by cgit (git 2.34.1) at 2024-12-28 16:41:49 +0000