r8302: import mini HEIMDAL into the tree

(This used to be commit 118be28a7aef233799956615a99d1a2a74dac175)

1 files changed, 153 insertions, 0 deletions

diff --git a/source4/heimdal/lib/krb5/mk_priv.c b/source4/heimdal/lib/krb5/mk_priv.c
new file mode 100644
index 0000000000..56112eea8c
--- /dev/null
+++ b/source4/heimdal/lib/krb5/mk_priv.c
@@ -0,0 +1,153 @@
+/*
+ * 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: mk_priv.c,v 1.34 2004/05/25 21:33:32 lha Exp $");
+
+      
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_mk_priv(krb5_context context,
+	     krb5_auth_context auth_context,
+	     const krb5_data *userdata,
+	     krb5_data *outbuf,
+	     krb5_replay_data *outdata)
+{
+    krb5_error_code ret;
+    KRB_PRIV s;
+    EncKrbPrivPart part;
+    u_char *buf = NULL;
+    size_t buf_size;
+    size_t len;
+    krb5_crypto crypto;
+    krb5_keyblock *key;
+    krb5_replay_data rdata;
+
+    if ((auth_context->flags & 
+	 (KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE)) &&
+	outdata == NULL)
+	return KRB5_RC_REQUIRED; /* XXX better error, MIT returns this */
+
+    if (auth_context->local_subkey)
+	key = auth_context->local_subkey;
+    else if (auth_context->remote_subkey)
+	key = auth_context->remote_subkey;
+    else
+	key = auth_context->keyblock;
+
+    memset(&rdata, 0, sizeof(rdata));
+
+    part.user_data = *userdata;
+
+    krb5_us_timeofday (context, &rdata.timestamp, &rdata.usec);
+
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_TIME) {
+	part.timestamp = &rdata.timestamp;
+	part.usec      = &rdata.usec;
+    } else {
+	part.timestamp = NULL;
+	part.usec      = NULL;
+    }
+
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_RET_TIME) {
+	outdata->timestamp = rdata.timestamp;
+	outdata->usec = rdata.usec;
+    }
+
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
+	rdata.seq = auth_context->local_seqnumber;
+	part.seq_number = &rdata.seq;
+    } else
+	part.seq_number = NULL;
+
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_RET_SEQUENCE)
+	outdata->seq = auth_context->local_seqnumber;
+    
+    part.s_address = auth_context->local_address;
+    part.r_address = auth_context->remote_address;
+
+    krb5_data_zero (&s.enc_part.cipher);
+
+    ASN1_MALLOC_ENCODE(EncKrbPrivPart, buf, buf_size, &part, &len, ret);
+    if (ret)
+	goto fail;
+    if (buf_size != len)
+	krb5_abortx(context, "internal error in ASN.1 encoder");
+
+    s.pvno = 5;
+    s.msg_type = krb_priv;
+    s.enc_part.etype = key->keytype;
+    s.enc_part.kvno = NULL;
+
+    ret = krb5_crypto_init(context, key, 0, &crypto);
+    if (ret) {
+	free (buf);
+	return ret;
+    }
+    ret = krb5_encrypt (context, 
+			crypto,
+			KRB5_KU_KRB_PRIV,
+			buf + buf_size - len, 
+			len,
+			&s.enc_part.cipher);
+    krb5_crypto_destroy(context, crypto);
+    if (ret) {
+	free(buf);
+	return ret;
+    }
+    free(buf);
+
+
+    ASN1_MALLOC_ENCODE(KRB_PRIV, buf, buf_size, &s, &len, ret);
+
+    if(ret)
+	goto fail;
+    krb5_data_free (&s.enc_part.cipher);
+
+    ret = krb5_data_copy(outbuf, buf + buf_size - len, len);
+    if (ret) {
+	krb5_set_error_string (context, "malloc: out of memory");
+	free(buf);
+	return ENOMEM;
+    }
+    free (buf);
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE)
+	auth_context->local_seqnumber =
+	    (auth_context->local_seqnumber + 1) & 0xFFFFFFFF;
+    return 0;
+
+  fail:
+    free (buf);
+    krb5_data_free (&s.enc_part.cipher);
+    return ret;
+}