1 files changed, 97 insertions, 0 deletions
diff --git a/Utilities/cmcurl/lib/vauth/cram.c b/Utilities/cmcurl/lib/vauth/cram.c
new file mode 100644
index 0000000..91fb261
--- /dev/null
+++ b/Utilities/cmcurl/lib/vauth/cram.c
@@ -0,0 +1,97 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ * RFC2195 CRAM-MD5 authentication
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifndef CURL_DISABLE_DIGEST_AUTH
+
+#include <curl/curl.h>
+#include "urldata.h"
+
+#include "vauth/vauth.h"
+#include "curl_hmac.h"
+#include "curl_md5.h"
+#include "warnless.h"
+#include "curl_printf.h"
+
+/* The last #include files should be: */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+
+/*
+ * Curl_auth_create_cram_md5_message()
+ *
+ * This is used to generate a CRAM-MD5 response message ready for sending to
+ * the recipient.
+ *
+ * Parameters:
+ *
+ * chlg    [in]     - The challenge.
+ * userp   [in]     - The user name.
+ * passwdp [in]     - The user's password.
+ * out     [out]    - The result storage.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_auth_create_cram_md5_message(const struct bufref *chlg,
+                                           const char *userp,
+                                           const char *passwdp,
+                                           struct bufref *out)
+{
+  struct HMAC_context *ctxt;
+  unsigned char digest[MD5_DIGEST_LEN];
+  char *response;
+
+  /* Compute the digest using the password as the key */
+  ctxt = Curl_HMAC_init(Curl_HMAC_MD5,
+                        (const unsigned char *) passwdp,
+                        curlx_uztoui(strlen(passwdp)));
+  if(!ctxt)
+    return CURLE_OUT_OF_MEMORY;
+
+  /* Update the digest with the given challenge */
+  if(Curl_bufref_len(chlg))
+    Curl_HMAC_update(ctxt, Curl_bufref_ptr(chlg),
+                     curlx_uztoui(Curl_bufref_len(chlg)));
+
+  /* Finalise the digest */
+  Curl_HMAC_final(ctxt, digest);
+
+  /* Generate the response */
+  response = aprintf(
+    "%s %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+    userp, digest[0], digest[1], digest[2], digest[3], digest[4],
+    digest[5], digest[6], digest[7], digest[8], digest[9], digest[10],
+    digest[11], digest[12], digest[13], digest[14], digest[15]);
+  if(!response)
+    return CURLE_OUT_OF_MEMORY;
+
+  Curl_bufref_set(out, response, strlen(response), curl_free);
+  return CURLE_OK;
+}
+
+#endif /* !CURL_DISABLE_DIGEST_AUTH */