1 files changed, 78 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/otp/otp_verify.c b/third_party/heimdal/lib/otp/otp_verify.c
new file mode 100644
index 0000000..8a1c743
--- /dev/null
+++ b/third_party/heimdal/lib/otp/otp_verify.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1995 - 2000 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+RCSID("$Id$");
+#endif
+
+#include "otp_locl.h"
+
+int
+otp_verify_user_1 (OtpContext *ctx, const char *passwd)
+{
+  OtpKey key1, key2;
+
+  if (otp_parse (key1, passwd, ctx->alg)) {
+    ctx->err = "Syntax error in reply";
+    return -1;
+  }
+  memcpy (key2, key1, sizeof(key1));
+  ctx->alg->next (key2);
+  if (memcmp (ctx->key, key2, sizeof(key2)) == 0) {
+    --ctx->n;
+    memcpy (ctx->key, key1, sizeof(key1));
+    return 0;
+  } else
+    return -1;
+}
+
+int
+otp_verify_user (OtpContext *ctx, const char *passwd)
+{
+  void *dbm;
+  int ret;
+
+  if (!ctx->challengep)
+    return -1;
+  ret = otp_verify_user_1 (ctx, passwd);
+  dbm = otp_db_open ();
+  if (dbm == NULL) {
+    free(ctx->user);
+    return -1;
+  }
+  otp_put (dbm, ctx);
+  free(ctx->user);
+  otp_db_close (dbm);
+  return ret;
+}