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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2012, 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
*
***************************************************************************/
#include "setup.h"
#include <curl/curl.h>
#include "urldata.h"
#include "curl_base64.h"
#include "curl_ntlm_msgs.h"
#include "curl_sasl.h"
/* The last #include file should be: */
#include "memdebug.h"
/*
* Curl_sasl_create_plain_message()
*
* This is used to generate an already encoded PLAIN message ready
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* 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 Curl_sasl_create_plain_message(struct SessionHandle *data,
const char* userp,
const char* passwdp,
char **outptr, size_t *outlen)
{
char plainauth[2 * MAX_CURL_USER_LENGTH + MAX_CURL_PASSWORD_LENGTH];
size_t ulen;
size_t plen;
ulen = strlen(userp);
plen = strlen(passwdp);
if(2 * ulen + plen + 2 > sizeof(plainauth)) {
*outlen = 0;
*outptr = NULL;
return CURLE_OUT_OF_MEMORY; /* plainauth too small */
}
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);
return Curl_base64_encode(data, plainauth, 2 * ulen + plen + 2, outptr,
outlen);
}
/*
* Curl_sasl_create_login_message()
*
* This is used to generate an already encoded LOGIN message containing the
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* user name or password ready for sending to the recipient.
*
* Parameters:
*
* data [in] - The session handle.
* userp [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 Curl_sasl_create_login_message(struct SessionHandle *data,
const char* valuep, char **outptr,
size_t *outlen)
{
size_t vlen = strlen(valuep);
if(!vlen) {
*outptr = strdup("=");
if(*outptr) {
*outlen = (size_t) 1;
return CURLE_OK;
}
*outlen = 0;
return CURLE_OUT_OF_MEMORY;
}
return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
}
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#ifdef USE_NTLM
/*
* Curl_sasl_create_ntlm_type1_message()
*
* This is used to generate an already encoded NTLM type-1 message ready for
* sending to the recipient.
*
* Note: This is a simple wrapper of the NTLM function which means that any
* SASL based protocols don't have to include the NTLM functions directly.
*
* Parameters:
*
* userp [in] - The user name in the format User or Domain\User.
* passdwp [in] - The user's password.
* ntlm [in/out] - The ntlm data struct being used and modified.
* 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_sasl_create_ntlm_type1_message(const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr, size_t *outlen)
{
return Curl_ntlm_create_type1_message(userp, passwdp, ntlm, outptr,
outlen);
}
/*
* Curl_sasl_decode_ntlm_type2_message()
*
* This is used to decode a ntlm type-2 message received from a recipient and
* generate the already encoded NTLM type-3 message ready for sending back.
*
* Parameters:
*
* data [in] - Pointer to session handle.
* header [in] - Pointer to the input buffer.
* userp [in] - The user name in the format User or Domain\User.
* passdwp [in] - The user's password.
* ntlm [in/out] - The ntlm data struct being used and modified.
* 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_sasl_decode_ntlm_type2_message(struct SessionHandle *data,
const char *header,
const char *userp,
const char *passwdp,
struct ntlmdata *ntlm,
char **outptr, size_t *outlen)
{
CURLcode result = Curl_ntlm_decode_type2_message(data, header, ntlm);
if(!result)
result = Curl_ntlm_create_type3_message(data, userp, passwdp, ntlm,
outptr, outlen);
return result;
}
#endif /* USE_NTLM */
/*
* Curl_sasl_cleanup()
*
* This is used to cleanup any libraries or curl modules used by the sasl
* functions.
*
* Parameters:
*
* conn [in] - Pointer to the connection data.
* authused [in] - The authentication mechanism used.
*/
void Curl_sasl_cleanup(struct connectdata *conn, unsigned int authused)
{
#ifdef USE_NTLM
/* Cleanup the ntlm structure */
if(authused == SASL_AUTH_NTLM) {
Curl_ntlm_sspi_cleanup(&conn->ntlm);
}
#else
/* Reserved for future use */
(void)conn;
(void)authused;
#endif
}