160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* RFC4616 PLAIN authentication
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* Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include <curl/curl.h>
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#include "urldata.h"
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#include "vauth/vauth.h"
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#include "curl_base64.h"
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#include "curl_md5.h"
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#include "warnless.h"
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#include "strtok.h"
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#include "sendf.h"
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#include "curl_printf.h"
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/* The last #include files should be: */
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#include "curl_memory.h"
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#include "memdebug.h"
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/*
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* Curl_auth_create_plain_message()
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*
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* This is used to generate an already encoded PLAIN message ready
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* for sending to the recipient.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* userp [in] - The user name.
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* passwdp [in] - The user's password.
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* outptr [in/out] - The address where a pointer to newly allocated memory
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* holding the result will be stored upon completion.
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* outlen [out] - The length of the output message.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_create_plain_message(struct Curl_easy *data,
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const char *userp,
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const char *passwdp,
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char **outptr, size_t *outlen)
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{
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CURLcode result;
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char *plainauth;
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size_t ulen;
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size_t plen;
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size_t plainlen;
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*outlen = 0;
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*outptr = NULL;
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ulen = strlen(userp);
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plen = strlen(passwdp);
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/* Compute binary message length. Check for overflows. */
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if((ulen > SIZE_T_MAX/4) || (plen > (SIZE_T_MAX/2 - 2)))
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return CURLE_OUT_OF_MEMORY;
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plainlen = 2 * ulen + plen + 2;
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plainauth = malloc(plainlen);
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if(!plainauth)
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return CURLE_OUT_OF_MEMORY;
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/* Calculate the reply */
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memcpy(plainauth, userp, ulen);
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plainauth[ulen] = '\0';
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memcpy(plainauth + ulen + 1, userp, ulen);
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plainauth[2 * ulen + 1] = '\0';
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memcpy(plainauth + 2 * ulen + 2, passwdp, plen);
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/* Base64 encode the reply */
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result = Curl_base64_encode(data, plainauth, plainlen, outptr, outlen);
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free(plainauth);
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return result;
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}
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/*
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* Curl_auth_create_login_message()
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*
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* 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.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* valuep [in] - The user name or user's password.
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* outptr [in/out] - The address where a pointer to newly allocated memory
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* holding the result will be stored upon completion.
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* outlen [out] - The length of the output message.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_create_login_message(struct Curl_easy *data,
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const char *valuep, char **outptr,
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size_t *outlen)
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{
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size_t vlen = strlen(valuep);
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if(!vlen) {
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/* Calculate an empty reply */
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*outptr = strdup("=");
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if(*outptr) {
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*outlen = (size_t) 1;
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return CURLE_OK;
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}
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*outlen = 0;
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return CURLE_OUT_OF_MEMORY;
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}
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/* Base64 encode the value */
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return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
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}
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/*
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* Curl_auth_create_external_message()
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*
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* This is used to generate an already encoded EXTERNAL message containing
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* the user name ready for sending to the recipient.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* user [in] - The user name.
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* outptr [in/out] - The address where a pointer to newly allocated memory
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* holding the result will be stored upon completion.
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* outlen [out] - The length of the output message.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_create_external_message(struct Curl_easy *data,
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const char *user, char **outptr,
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size_t *outlen)
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{
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/* This is the same formatting as the login message */
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return Curl_auth_create_login_message(data, user, outptr, outlen);
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}
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