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authorHeimdal Import User <samba-bugs@samba.org>2005-07-11 01:16:55 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:19:33 -0500
commit954c01728e0c7485b72c9a5d5737e5f6bd0cf0b9 (patch)
treefc11a048c8a582e2ca66415ff04dacf74f9abf22 /source4/heimdal/lib/krb5/build_auth.c
parent7ead5ab06cea9f33e954a4579163262f97ea06ff (diff)
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r8302: import mini HEIMDAL into the tree
(This used to be commit 118be28a7aef233799956615a99d1a2a74dac175)
Diffstat (limited to 'source4/heimdal/lib/krb5/build_auth.c')
-rw-r--r--source4/heimdal/lib/krb5/build_auth.c205
1 files changed, 205 insertions, 0 deletions
diff --git a/source4/heimdal/lib/krb5/build_auth.c b/source4/heimdal/lib/krb5/build_auth.c
new file mode 100644
index 0000000000..1c38721b02
--- /dev/null
+++ b/source4/heimdal/lib/krb5/build_auth.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 1997 - 2003 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: build_auth.c,v 1.42 2005/01/05 02:34:53 lukeh Exp $");
+
+static krb5_error_code
+make_etypelist(krb5_context context,
+ krb5_authdata **auth_data)
+{
+ EtypeList etypes;
+ krb5_error_code ret;
+ krb5_authdata ad;
+ u_char *buf;
+ size_t len;
+ size_t buf_size;
+
+ ret = krb5_init_etype(context, &etypes.len, &etypes.val, NULL);
+ if (ret)
+ return ret;
+
+ ASN1_MALLOC_ENCODE(EtypeList, buf, buf_size, &etypes, &len, ret);
+ if (ret) {
+ free_EtypeList(&etypes);
+ return ret;
+ }
+ if(buf_size != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+ free_EtypeList(&etypes);
+
+ ALLOC_SEQ(&ad, 1);
+ if (ad.val == NULL) {
+ free(buf);
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ ad.val[0].ad_type = KRB5_AUTHDATA_GSS_API_ETYPE_NEGOTIATION;
+ ad.val[0].ad_data.length = len;
+ ad.val[0].ad_data.data = buf;
+
+ ASN1_MALLOC_ENCODE(AD_IF_RELEVANT, buf, buf_size, &ad, &len, ret);
+ if (ret) {
+ free_AuthorizationData(&ad);
+ return ret;
+ }
+ if(buf_size != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+ free_AuthorizationData(&ad);
+
+ ALLOC(*auth_data, 1);
+ if (*auth_data == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ ALLOC_SEQ(*auth_data, 1);
+ if ((*auth_data)->val == NULL) {
+ free(buf);
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ (*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;
+
+ return 0;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_build_authenticator (krb5_context context,
+ krb5_auth_context auth_context,
+ krb5_enctype enctype,
+ krb5_creds *cred,
+ Checksum *cksum,
+ Authenticator **auth_result,
+ krb5_data *result,
+ krb5_key_usage usage)
+{
+ Authenticator *auth;
+ u_char *buf = NULL;
+ size_t buf_size;
+ size_t len;
+ krb5_error_code ret;
+ krb5_crypto crypto;
+
+ auth = malloc(sizeof(*auth));
+ if (auth == NULL) {
+ krb5_set_error_string(context, "malloc: out of memory");
+ return ENOMEM;
+ }
+
+ memset (auth, 0, sizeof(*auth));
+ auth->authenticator_vno = 5;
+ copy_Realm(&cred->client->realm, &auth->crealm);
+ copy_PrincipalName(&cred->client->name, &auth->cname);
+
+ krb5_us_timeofday (context, &auth->ctime, &auth->cusec);
+
+ ret = krb5_auth_con_getlocalsubkey(context, auth_context, &auth->subkey);
+ if(ret)
+ goto fail;
+
+ if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
+ if(auth_context->local_seqnumber == 0)
+ krb5_generate_seq_number (context,
+ &cred->session,
+ &auth_context->local_seqnumber);
+ ALLOC(auth->seq_number, 1);
+ if(auth->seq_number == NULL) {
+ ret = ENOMEM;
+ goto fail;
+ }
+ *auth->seq_number = auth_context->local_seqnumber;
+ } else
+ auth->seq_number = NULL;
+ auth->authorization_data = NULL;
+ auth->cksum = cksum;
+
+ if (cksum != NULL && cksum->cksumtype == CKSUMTYPE_GSSAPI) {
+ /*
+ * This is not GSS-API specific, we only enable it for
+ * GSS for now
+ */
+ ret = make_etypelist(context, &auth->authorization_data);
+ if (ret)
+ goto fail;
+ }
+
+ /* XXX - Copy more to auth_context? */
+
+ if (auth_context) {
+ auth_context->authenticator->ctime = auth->ctime;
+ auth_context->authenticator->cusec = auth->cusec;
+ }
+
+ ASN1_MALLOC_ENCODE(Authenticator, buf, buf_size, auth, &len, ret);
+ if (ret)
+ goto fail;
+ if(buf_size != len)
+ krb5_abortx(context, "internal error in ASN.1 encoder");
+
+ ret = krb5_crypto_init(context, &cred->session, enctype, &crypto);
+ if (ret)
+ goto fail;
+ ret = krb5_encrypt (context,
+ crypto,
+ usage /* KRB5_KU_AP_REQ_AUTH */,
+ buf + buf_size - len,
+ len,
+ result);
+ krb5_crypto_destroy(context, crypto);
+
+ if (ret)
+ goto fail;
+
+ free (buf);
+
+ if (auth_result)
+ *auth_result = auth;
+ else {
+ /* Don't free the `cksum', it's allocated by the caller */
+ auth->cksum = NULL;
+ free_Authenticator (auth);
+ free (auth);
+ }
+ return ret;
+ fail:
+ free_Authenticator (auth);
+ free (auth);
+ free (buf);
+ return ret;
+}