vauth: Moved the ClearText authentication code to the new vauth directory

2 files changed, 175 insertions, 0 deletions

diff --git a/lib/vauth/cleartext.c b/lib/vauth/cleartext.c
new file mode 100644
index 000000000..236b5a9bb
--- /dev/null
+++ b/lib/vauth/cleartext.c
@@ -0,0 +1,157 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2015, 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 http://curl.haxx.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.
+ *
+ * RFC4616 PLAIN authentication
+ * Draft   LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+#include "urldata.h"
+
+#include "vauth/vauth.h"
+#include "curl_base64.h"
+#include "curl_md5.h"
+#include "warnless.h"
+#include "strtok.h"
+#include "strequal.h"
+#include "rawstr.h"
+#include "sendf.h"
+#include "curl_printf.h"
+
+/* The last #include files should be: */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+/*
+ * sasl_create_plain_message()
+ *
+ * This is used to generate an already encoded PLAIN message ready
+ * for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * userp   [in]     - The user name.
+ * passdwp [in]     - The user's password.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode sasl_create_plain_message(struct SessionHandle *data,
+                                   const char *userp,
+                                   const char *passwdp,
+                                   char **outptr, size_t *outlen)
+{
+  CURLcode result;
+  char *plainauth;
+  size_t ulen;
+  size_t plen;
+
+  ulen = strlen(userp);
+  plen = strlen(passwdp);
+
+  plainauth = malloc(2 * ulen + plen + 2);
+  if(!plainauth) {
+    *outlen = 0;
+    *outptr = NULL;
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  /* Calculate the reply */
+  memcpy(plainauth, userp, ulen);
+  plainauth[ulen] = '\0';
+  memcpy(plainauth + ulen + 1, userp, ulen);
+  plainauth[2 * ulen + 1] = '\0';
+  memcpy(plainauth + 2 * ulen + 2, passwdp, plen);
+
+  /* Base64 encode the reply */
+  result = Curl_base64_encode(data, plainauth, 2 * ulen + plen + 2, outptr,
+                              outlen);
+  free(plainauth);
+
+  return result;
+}
+
+/*
+ * sasl_create_login_message()
+ *
+ * This is used to generate an already encoded LOGIN message containing the
+ * user name or password ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * valuep  [in]     - The user name or user's password.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode sasl_create_login_message(struct SessionHandle *data,
+                                   const char *valuep, char **outptr,
+                                   size_t *outlen)
+{
+  size_t vlen = strlen(valuep);
+
+  if(!vlen) {
+    /* Calculate an empty reply */
+    *outptr = strdup("=");
+    if(*outptr) {
+      *outlen = (size_t) 1;
+      return CURLE_OK;
+    }
+
+    *outlen = 0;
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  /* Base64 encode the value */
+  return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
+}
+
+/*
+ * sasl_create_external_message()
+ *
+ * This is used to generate an already encoded EXTERNAL message containing
+ * the user name ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data    [in]     - The session handle.
+ * user    [in]     - The user name.
+ * outptr  [in/out] - The address where a pointer to newly allocated memory
+ *                    holding the result will be stored upon completion.
+ * outlen  [out]    - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode sasl_create_external_message(struct SessionHandle *data,
+                                      const char *user, char **outptr,
+                                      size_t *outlen)
+{
+  /* This is the same formatting as the login message */
+  return sasl_create_login_message(data, user, outptr, outlen);
+}
diff --git a/lib/vauth/vauth.h b/lib/vauth/vauth.h
index d0961e5a7..4e02a27c9 100644
--- a/lib/vauth/vauth.h
+++ b/lib/vauth/vauth.h
@@ -24,6 +24,8 @@
 
 #include <curl/curl.h>
 
+struct SessionHandle;
+
 /* This is used to build a SPN string */
 #if !defined(USE_WINDOWS_SSPI)
 char *Curl_sasl_build_spn(const char *service, const char *instance);
@@ -35,4 +37,20 @@ TCHAR *Curl_sasl_build_spn(const char *service, const char *instance);
 char *Curl_sasl_build_gssapi_spn(const char *service, const char *instance);
 #endif
 
+/* This is used to generate a base64 encoded PLAIN cleartext message */
+CURLcode sasl_create_plain_message(struct SessionHandle *data,
+                                   const char *userp,
+                                   const char *passwdp,
+                                   char **outptr, size_t *outlen);
+
+/* This is used to generate a base64 encoded LOGIN cleartext message */
+CURLcode sasl_create_login_message(struct SessionHandle *data,
+                                   const char *valuep, char **outptr,
+                                   size_t *outlen);
+
+/* This is used to generate a base64 encoded EXTERNAL cleartext message */
+CURLcode sasl_create_external_message(struct SessionHandle *data,
+                                      const char *user, char **outptr,
+                                      size_t *outlen);
+
 #endif /* HEADER_CURL_VAUTH_H */