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-rw-r--r--crypto/heimdal/lib/krb5/get_for_creds.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/krb5/get_for_creds.c b/crypto/heimdal/lib/krb5/get_for_creds.c
new file mode 100644
index 0000000..977515f
--- /dev/null
+++ b/crypto/heimdal/lib/krb5/get_for_creds.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 1997, 1998, 1999 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 <krb5_locl.h>
+
+RCSID("$Id: get_for_creds.c,v 1.21 1999/12/20 00:57:37 assar Exp $");
+
+static krb5_error_code
+add_addrs(krb5_context context,
+ krb5_addresses *addr,
+ struct addrinfo *ai)
+{
+ krb5_error_code ret;
+ unsigned n, i;
+ void *tmp;
+ struct addrinfo *a;
+
+ n = 0;
+ for (a = ai; a != NULL; a = a->ai_next)
+ ++n;
+
+ i = addr->len;
+ addr->len += n;
+ tmp = realloc(addr->val, addr->len * sizeof(*addr->val));
+ if (tmp == NULL) {
+ ret = ENOMEM;
+ goto fail;
+ }
+ addr->val = tmp;
+ for (a = ai; a != NULL; a = a->ai_next) {
+ ret = krb5_sockaddr2address (a->ai_addr, &addr->val[i++]);
+ if (ret)
+ goto fail;
+ }
+ return 0;
+fail:
+ krb5_free_addresses (context, addr);
+ return ret;
+}
+
+/*
+ *
+ */
+
+krb5_error_code
+krb5_fwd_tgt_creds (krb5_context context,
+ krb5_auth_context auth_context,
+ const char *hostname,
+ krb5_principal client,
+ krb5_principal server,
+ krb5_ccache ccache,
+ int forwardable,
+ krb5_data *out_data)
+{
+ krb5_flags flags = 0;
+ krb5_creds creds;
+ krb5_error_code ret;
+
+ flags |= KDC_OPT_FORWARDED;
+
+ if (forwardable)
+ flags |= KDC_OPT_FORWARDABLE;
+
+
+ memset (&creds, 0, sizeof(creds));
+ creds.client = client;
+ creds.server = server;
+
+ ret = krb5_get_forwarded_creds (context,
+ auth_context,
+ ccache,
+ flags,
+ hostname,
+ &creds,
+ out_data);
+ return ret;
+}
+
+/*
+ *
+ */
+
+krb5_error_code
+krb5_get_forwarded_creds (krb5_context context,
+ krb5_auth_context auth_context,
+ krb5_ccache ccache,
+ krb5_flags flags,
+ const char *hostname,
+ krb5_creds *in_creds,
+ krb5_data *out_data)
+{
+ krb5_error_code ret;
+ krb5_creds *out_creds;
+ krb5_addresses addrs;
+ KRB_CRED cred;
+ KrbCredInfo *krb_cred_info;
+ EncKrbCredPart enc_krb_cred_part;
+ size_t len;
+ u_char buf[1024];
+ int32_t sec, usec;
+ krb5_kdc_flags kdc_flags;
+ krb5_crypto crypto;
+ struct addrinfo *ai;
+
+ addrs.len = 0;
+ addrs.val = NULL;
+
+ ret = getaddrinfo (hostname, NULL, NULL, &ai);
+ if (ret)
+ return ret;
+
+ ret = add_addrs (context, &addrs, ai);
+ freeaddrinfo (ai);
+ if (ret)
+ return ret;
+
+ kdc_flags.i = flags;
+
+ ret = krb5_get_kdc_cred (context,
+ ccache,
+ kdc_flags,
+ &addrs,
+ NULL,
+ in_creds,
+ &out_creds);
+ krb5_free_addresses (context, &addrs);
+ if (ret) {
+ return ret;
+ }
+
+ memset (&cred, 0, sizeof(cred));
+ cred.pvno = 5;
+ cred.msg_type = krb_cred;
+ ALLOC_SEQ(&cred.tickets, 1);
+ if (cred.tickets.val == NULL) {
+ ret = ENOMEM;
+ goto out2;
+ }
+ ret = decode_Ticket(out_creds->ticket.data,
+ out_creds->ticket.length,
+ cred.tickets.val, &len);
+ if (ret)
+ goto out3;
+
+ memset (&enc_krb_cred_part, 0, sizeof(enc_krb_cred_part));
+ ALLOC_SEQ(&enc_krb_cred_part.ticket_info, 1);
+ if (enc_krb_cred_part.ticket_info.val == NULL) {
+ ret = ENOMEM;
+ goto out4;
+ }
+
+ krb5_us_timeofday (context, &sec, &usec);
+
+ ALLOC(enc_krb_cred_part.timestamp, 1);
+ if (enc_krb_cred_part.timestamp == NULL) {
+ ret = ENOMEM;
+ goto out4;
+ }
+ *enc_krb_cred_part.timestamp = sec;
+ ALLOC(enc_krb_cred_part.usec, 1);
+ if (enc_krb_cred_part.usec == NULL) {
+ ret = ENOMEM;
+ goto out4;
+ }
+ *enc_krb_cred_part.usec = usec;
+
+ ret = krb5_make_addrport (&enc_krb_cred_part.s_address,
+ auth_context->local_address,
+ auth_context->local_port);
+ if (ret)
+ goto out4;
+
+ ALLOC(enc_krb_cred_part.r_address, 1);
+ if (enc_krb_cred_part.r_address == NULL) {
+ ret = ENOMEM;
+ goto out4;
+ }
+
+ ret = krb5_copy_address (context, auth_context->remote_address,
+ enc_krb_cred_part.r_address);
+ if (ret)
+ goto out4;
+
+ /* fill ticket_info.val[0] */
+
+ enc_krb_cred_part.ticket_info.len = 1;
+
+ krb_cred_info = enc_krb_cred_part.ticket_info.val;
+
+ copy_EncryptionKey (&out_creds->session, &krb_cred_info->key);
+ ALLOC(krb_cred_info->prealm, 1);
+ copy_Realm (&out_creds->client->realm, krb_cred_info->prealm);
+ ALLOC(krb_cred_info->pname, 1);
+ copy_PrincipalName(&out_creds->client->name, krb_cred_info->pname);
+ ALLOC(krb_cred_info->flags, 1);
+ *krb_cred_info->flags = out_creds->flags.b;
+ ALLOC(krb_cred_info->authtime, 1);
+ *krb_cred_info->authtime = out_creds->times.authtime;
+ ALLOC(krb_cred_info->starttime, 1);
+ *krb_cred_info->starttime = out_creds->times.starttime;
+ ALLOC(krb_cred_info->endtime, 1);
+ *krb_cred_info->endtime = out_creds->times.endtime;
+ ALLOC(krb_cred_info->renew_till, 1);
+ *krb_cred_info->renew_till = out_creds->times.renew_till;
+ ALLOC(krb_cred_info->srealm, 1);
+ copy_Realm (&out_creds->server->realm, krb_cred_info->srealm);
+ ALLOC(krb_cred_info->sname, 1);
+ copy_PrincipalName (&out_creds->server->name, krb_cred_info->sname);
+ ALLOC(krb_cred_info->caddr, 1);
+ copy_HostAddresses (&out_creds->addresses, krb_cred_info->caddr);
+
+ krb5_free_creds (context, out_creds);
+
+ /* encode EncKrbCredPart */
+
+ ret = krb5_encode_EncKrbCredPart (context,
+ buf + sizeof(buf) - 1, sizeof(buf),
+ &enc_krb_cred_part, &len);
+ free_EncKrbCredPart (&enc_krb_cred_part);
+ if (ret) {
+ free_KRB_CRED(&cred);
+ return ret;
+ }
+
+ krb5_crypto_init(context, auth_context->local_subkey, 0, &crypto);
+ ret = krb5_encrypt_EncryptedData (context,
+ crypto,
+ KRB5_KU_KRB_CRED,
+ buf + sizeof(buf) - len,
+ len,
+ 0,
+ &cred.enc_part);
+ krb5_crypto_destroy(context, crypto);
+ if (ret) {
+ free_KRB_CRED(&cred);
+ return ret;
+ }
+
+ ret = encode_KRB_CRED (buf + sizeof(buf) - 1, sizeof(buf),
+ &cred, &len);
+ free_KRB_CRED (&cred);
+ if (ret)
+ return ret;
+ out_data->length = len;
+ out_data->data = malloc(len);
+ if (out_data->data == NULL)
+ return ENOMEM;
+ memcpy (out_data->data, buf + sizeof(buf) - len, len);
+ return 0;
+out4:
+ free_EncKrbCredPart(&enc_krb_cred_part);
+out3:
+ free_KRB_CRED(&cred);
+out2:
+ krb5_free_creds (context, out_creds);
+ return ret;
+}
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