| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2019, 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.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" |
| |
| #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 "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: |
| * |
| * data [in] - The session handle. |
| * authzid [in] - The authorization identity. |
| * authcid [in] - The authentication identity. |
| * passwd [in] - The 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_auth_create_plain_message(struct Curl_easy *data, |
| const char *authzid, |
| const char *authcid, |
| const char *passwd, |
| char **outptr, size_t *outlen) |
| { |
| CURLcode result; |
| char *plainauth; |
| size_t zlen; |
| size_t clen; |
| size_t plen; |
| size_t plainlen; |
| |
| *outlen = 0; |
| *outptr = NULL; |
| zlen = (authzid == NULL ? 0 : strlen(authzid)); |
| clen = strlen(authcid); |
| plen = strlen(passwd); |
| |
| /* Compute binary message length. Check for overflows. */ |
| if(((zlen + clen) > SIZE_T_MAX/4) || (plen > (SIZE_T_MAX/2 - 2))) |
| return CURLE_OUT_OF_MEMORY; |
| plainlen = zlen + clen + plen + 2; |
| |
| plainauth = malloc(plainlen); |
| if(!plainauth) |
| return CURLE_OUT_OF_MEMORY; |
| |
| /* Calculate the reply */ |
| if(zlen != 0) |
| 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); |
| |
| /* Base64 encode the reply */ |
| result = Curl_base64_encode(data, plainauth, plainlen, outptr, outlen); |
| free(plainauth); |
| |
| return result; |
| } |
| |
| /* |
| * 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: |
| * |
| * 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 Curl_auth_create_login_message(struct Curl_easy *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); |
| } |
| |
| /* |
| * 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: |
| * |
| * 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 Curl_auth_create_external_message(struct Curl_easy *data, |
| const char *user, char **outptr, |
| size_t *outlen) |
| { |
| /* This is the same formatting as the login message */ |
| return Curl_auth_create_login_message(data, user, outptr, outlen); |
| } |
| |
| #endif /* if no users */ |