1 files changed, 104 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/krb5/read_message.c b/third_party/heimdal/lib/krb5/read_message.c
new file mode 100644
index 00000000000..4e9bd012dd6
--- /dev/null
+++ b/third_party/heimdal/lib/krb5/read_message.c
@@ -0,0 +1,104 @@
+/*
+ * 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 "krb5_locl.h"
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_read_message (krb5_context context,
+		   krb5_pointer p_fd,
+		   krb5_data *data)
+{
+    krb5_error_code ret;
+    uint32_t len;
+    uint8_t buf[4];
+
+    krb5_data_zero(data);
+
+    ret = krb5_net_read (context, p_fd, buf, 4);
+    if(ret == -1) {
+	ret = errno;
+	krb5_clear_error_message (context);
+	return ret;
+    }
+    if(ret < 4) {
+	krb5_clear_error_message(context);
+	return HEIM_ERR_EOF;
+    }
+    len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+    ret = krb5_data_alloc (data, len);
+    if (ret) {
+	krb5_clear_error_message(context);
+	return ret;
+    }
+    if (krb5_net_read (context, p_fd, data->data, len) != len) {
+	ret = errno;
+	krb5_data_free (data);
+	krb5_clear_error_message (context);
+	return ret;
+    }
+    return 0;
+}
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_read_priv_message(krb5_context context,
+		       krb5_auth_context ac,
+		       krb5_pointer p_fd,
+		       krb5_data *data)
+{
+    krb5_error_code ret;
+    krb5_data packet;
+
+    ret = krb5_read_message(context, p_fd, &packet);
+    if(ret)
+	return ret;
+    ret = krb5_rd_priv (context, ac, &packet, data, NULL);
+    krb5_data_free(&packet);
+    return ret;
+}
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_read_safe_message(krb5_context context,
+		       krb5_auth_context ac,
+		       krb5_pointer p_fd,
+		       krb5_data *data)
+{
+    krb5_error_code ret;
+    krb5_data packet;
+
+    ret = krb5_read_message(context, p_fd, &packet);
+    if(ret)
+	return ret;
+    ret = krb5_rd_safe (context, ac, &packet, data, NULL);
+    krb5_data_free(&packet);
+    return ret;
+}