new file

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1302 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/rd_safe.c

@@ -0,0 +1,37 @@
+#include <krb5_locl.h>
+#include <krb5_error.h>
+
+krb5_error_code
+krb5_rd_safe(krb5_context context,
+	     krb5_auth_context auth_context,
+	     const krb5_data *inbuf,
+	     krb5_data *outbuf,
+	     /*krb5_replay_data*/ void *outdata)
+{
+  krb5_error_code r;
+  KRB_SAFE safe;
+  int len;
+
+  len = decode_KRB_SAFE (inbuf->data, inbuf->length, &safe);
+  if (len < 0)
+    return ASN1_PARSE_ERROR;
+  if (safe.pvno != 5)
+    return KRB_AP_ERR_BADVERSION;
+  if (safe.msg_type != krb_safe)
+    return KRB_AP_ERR_MSG_TYPE;
+  if (safe.cksum.cksumtype != CKSUMTYPE_RSA_MD4)
+    return KRB_AP_ERR_INAPP_CKSUM;
+  /* XXX */
+  r = krb5_verify_checksum (context,
+			    safe.safe_body.user_data.data,
+			    safe.safe_body.user_data.length,
+			    &safe.cksum);
+  if (r)
+    return r;
+  outbuf->length = safe.safe_body.user_data.length;
+  outbuf->data   = malloc(outbuf->length);
+  if (outbuf->data == NULL)
+    return ENOMEM;
+  memcpy (outbuf->data, safe.safe_body.user_data.data, outbuf->length);
+  return 0;
+}