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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2022, 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
*
* RFC4616 PLAIN authentication
* Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
*
***************************************************************************/
#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_md5.h"
#include "warnless.h"
#include "strtok.h"
#include "sendf.h"
#include "curl_printf.h"
/* The last #include files should be: */
#include "curl_memory.h"
#include "memdebug.h"
/*
* Curl_auth_create_plain_message()
*
* This is used to generate an already encoded PLAIN message ready
* for sending to the recipient.
*
* Parameters:
*
* authzid [in] - The authorization identity.
* authcid [in] - The authentication identity.
* passwd [in] - The password.
* out [out] - The result storage.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_auth_create_plain_message(const char *authzid,
const char *authcid,
const char *passwd,
struct bufref *out)
{
char *plainauth;
size_t plainlen;
size_t zlen;
size_t clen;
size_t plen;
zlen = (authzid == NULL ? 0 : strlen(authzid));
clen = strlen(authcid);
plen = strlen(passwd);
/* Compute binary message length. Check for overflows. */
if((zlen > SIZE_T_MAX/4) || (clen > SIZE_T_MAX/4) ||
(plen > (SIZE_T_MAX/2 - 2)))
return CURLE_OUT_OF_MEMORY;
plainlen = zlen + clen + plen + 2;
plainauth = malloc(plainlen + 1);
if(!plainauth)
return CURLE_OUT_OF_MEMORY;
/* Calculate the reply */
if(zlen)
memcpy(plainauth, authzid, zlen);
plainauth[zlen] = '\0';
memcpy(plainauth + zlen + 1, authcid, clen);
plainauth[zlen + clen + 1] = '\0';
memcpy(plainauth + zlen + clen + 2, passwd, plen);
plainauth[plainlen] = '\0';
Curl_bufref_set(out, plainauth, plainlen, curl_free);
return CURLE_OK;
}
/*
* Curl_auth_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:
*
* valuep [in] - The user name or user's password.
* out [out] - The result storage.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_auth_create_login_message(const char *valuep, struct bufref *out)
{
Curl_bufref_set(out, valuep, strlen(valuep), NULL);
return CURLE_OK;
}
/*
* Curl_auth_create_external_message()
*
* This is used to generate an already encoded EXTERNAL message containing
* the user name ready for sending to the recipient.
*
* Parameters:
*
* user [in] - The user name.
* out [out] - The result storage.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_auth_create_external_message(const char *user,
struct bufref *out)
{
/* This is the same formatting as the login message */
return Curl_auth_create_login_message(user, out);
}
#endif /* if no users */
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