From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 19:20:00 +0200
Subject: Adding upstream version 2:4.20.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/heimdal/lib/krb5/mk_rep.c | 119 ++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 third_party/heimdal/lib/krb5/mk_rep.c

(limited to 'third_party/heimdal/lib/krb5/mk_rep.c')

diff --git a/third_party/heimdal/lib/krb5/mk_rep.c b/third_party/heimdal/lib/krb5/mk_rep.c
new file mode 100644
index 0000000..bd24c6e
--- /dev/null
+++ b/third_party/heimdal/lib/krb5/mk_rep.c
@@ -0,0 +1,119 @@
+/*
+ * 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"
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_mk_rep(krb5_context context,
+	    krb5_auth_context auth_context,
+	    krb5_data *outbuf)
+{
+    krb5_error_code ret;
+    AP_REP ap;
+    EncAPRepPart body;
+    u_char *buf = NULL;
+    size_t buf_size;
+    size_t len = 0;
+    krb5_crypto crypto;
+
+    ap.pvno = 5;
+    ap.msg_type = krb_ap_rep;
+
+    memset (&body, 0, sizeof(body));
+
+    body.ctime = auth_context->authenticator->ctime;
+    body.cusec = auth_context->authenticator->cusec;
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_USE_SUBKEY) {
+	if (auth_context->local_subkey == NULL) {
+	    ret = krb5_auth_con_generatelocalsubkey(context,
+						    auth_context,
+						    auth_context->keyblock);
+	    if(ret) {
+		free_EncAPRepPart(&body);
+		return ret;
+	    }
+	}
+	ret = krb5_copy_keyblock(context, auth_context->local_subkey,
+				 &body.subkey);
+	if (ret) {
+	    free_EncAPRepPart(&body);
+	    return krb5_enomem(context);
+	}
+    } else
+	body.subkey = NULL;
+    if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
+	if(auth_context->local_seqnumber == 0)
+	    krb5_generate_seq_number (context,
+				      auth_context->keyblock,
+				      &auth_context->local_seqnumber);
+	ALLOC(body.seq_number, 1);
+	if (body.seq_number == NULL) {
+	    free_EncAPRepPart(&body);
+	    return krb5_enomem(context);
+	}
+	*(body.seq_number) = auth_context->local_seqnumber;
+    } else
+	body.seq_number = NULL;
+
+    ap.enc_part.etype = auth_context->keyblock->keytype;
+    ap.enc_part.kvno  = NULL;
+
+    ASN1_MALLOC_ENCODE(EncAPRepPart, buf, buf_size, &body, &len, ret);
+    free_EncAPRepPart (&body);
+    if(ret)
+	return ret;
+    if (buf_size != len)
+	krb5_abortx(context, "internal error in ASN.1 encoder");
+    ret = krb5_crypto_init(context, auth_context->keyblock,
+			   0 /* ap.enc_part.etype */, &crypto);
+    if (ret) {
+	free (buf);
+	return ret;
+    }
+    ret = krb5_encrypt (context,
+			crypto,
+			KRB5_KU_AP_REQ_ENC_PART,
+			buf + buf_size - len,
+			len,
+			&ap.enc_part.cipher);
+    krb5_crypto_destroy(context, crypto);
+    free(buf);
+    if (ret)
+	return ret;
+
+    ASN1_MALLOC_ENCODE(AP_REP, outbuf->data, outbuf->length, &ap, &len, ret);
+    if (ret == 0 && outbuf->length != len)
+	krb5_abortx(context, "internal error in ASN.1 encoder");
+    free_AP_REP (&ap);
+    return ret;
+}
-- 
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