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/*************************************************************************** 
 *                                  _   _ ____  _ 
 *  Project                     ___| | | |  _ \| | 
 *                             / __| | | | |_) | | 
 *                            | (__| |_| |  _ <| |___ 
 *                             \___|\___/|_| \_\_____| 
 * 
 * Copyright (C) 1998 - 2020, 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. 
 * 
 * RFC6749 OAuth 2.0 Authorization Framework 
 * 
 ***************************************************************************/ 
 
#include "curl_setup.h" 
 
#if !defined(CURL_DISABLE_IMAP) || !defined(CURL_DISABLE_SMTP) || \
  !defined(CURL_DISABLE_POP3)

#include <curl/curl.h> 
#include "urldata.h" 
 
#include "vauth/vauth.h" 
#include "curl_base64.h" 
#include "warnless.h" 
#include "curl_printf.h" 
 
/* The last #include files should be: */ 
#include "curl_memory.h" 
#include "memdebug.h" 
 
/* 
 * Curl_auth_create_oauth_bearer_message() 
 * 
 * This is used to generate an already encoded OAuth 2.0 message ready for 
 * sending to the recipient. 
 * 
 * Parameters: 
 * 
 * data[in]         - The session handle. 
 * user[in]         - The user name. 
 * host[in]         - The host name.
 * port[in]         - The port(when not Port 80).
 * bearer[in]       - The bearer token. 
 * 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 Curl_auth_create_oauth_bearer_message(struct Curl_easy *data, 
                                               const char *user, 
                                               const char *host, 
                                               const long port, 
                                               const char *bearer, 
                                               char **outptr, size_t *outlen) 
{ 
  CURLcode result = CURLE_OK; 
  char *oauth = NULL; 
 
  /* Generate the message */ 
  if(port == 0 || port == 80)
    oauth = aprintf("n,a=%s,\1host=%s\1auth=Bearer %s\1\1", user, host,
                    bearer); 
  else 
    oauth = aprintf("n,a=%s,\1host=%s\1port=%ld\1auth=Bearer %s\1\1", user,
                    host, port, bearer); 
  if(!oauth) 
    return CURLE_OUT_OF_MEMORY; 
 
  /* Base64 encode the reply */ 
  result = Curl_base64_encode(data, oauth, strlen(oauth), outptr, outlen); 
 
  free(oauth); 
 
  return result; 
} 

/*
 * Curl_auth_create_xoauth_bearer_message()
 *
 * This is used to generate an already encoded XOAuth 2.0 message ready for
 * sending to the recipient.
 *
 * Parameters:
 *
 * data[in]         - The session handle.
 * user[in]         - The user name.
 * bearer[in]       - The bearer token.
 * 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 Curl_auth_create_xoauth_bearer_message(struct Curl_easy *data,
                                               const char *user,
                                               const char *bearer,
                                               char **outptr, size_t *outlen)
{
  CURLcode result = CURLE_OK;

  /* Generate the message */
  char *xoauth = aprintf("user=%s\1auth=Bearer %s\1\1", user, bearer);
  if(!xoauth)
    return CURLE_OUT_OF_MEMORY;

  /* Base64 encode the reply */
  result = Curl_base64_encode(data, xoauth, strlen(xoauth), outptr, outlen);

  free(xoauth);

  return result;
}
#endif /* disabled, no users */