mirror of
https://github.com/eclipse-mosquitto/mosquitto.git
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101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
/*
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Copyright (c) 2012-2021 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License 2.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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https://www.eclipse.org/legal/epl-2.0/
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include "config.h"
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#ifdef WITH_TLS
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# include <openssl/opensslv.h>
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# include <openssl/evp.h>
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# include <openssl/rand.h>
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# include <openssl/buffer.h>
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#endif
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#include <string.h>
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#include "mosquitto.h"
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#ifdef WITH_TLS
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int mosquitto_base64_encode(const unsigned char *in, size_t in_len, char **encoded)
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{
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BIO *bmem, *b64;
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BUF_MEM *bptr = NULL;
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int rc = 1;
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b64 = BIO_new(BIO_f_base64());
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if(b64 == NULL) return 1;
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BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
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bmem = BIO_new(BIO_s_mem());
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if(bmem){
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b64 = BIO_push(b64, bmem);
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BIO_write(b64, in, (int)in_len);
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if(BIO_flush(b64) == 1){
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BIO_get_mem_ptr(b64, &bptr);
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*encoded = malloc(bptr->length+1);
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if(*encoded){
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memcpy(*encoded, bptr->data, bptr->length);
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(*encoded)[bptr->length] = '\0';
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rc = 0;
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}
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}
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}
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BIO_free_all(b64);
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return rc;
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}
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int mosquitto_base64_decode(const char *in, unsigned char **decoded, unsigned int *decoded_len)
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{
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BIO *bmem, *b64;
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size_t slen;
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int len;
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int rc = 1;
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slen = strlen(in);
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b64 = BIO_new(BIO_f_base64());
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if(!b64) return 1;
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BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
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bmem = BIO_new(BIO_s_mem());
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if(bmem){
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b64 = BIO_push(b64, bmem);
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BIO_write(bmem, in, (int)slen);
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if(BIO_flush(bmem) == 1){
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*decoded = calloc(slen, 1);
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if(*decoded){
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len = BIO_read(b64, *decoded, (int)slen);
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if(len > 0){
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*decoded_len = (unsigned int)len;
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rc = 0;
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}else{
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free(*decoded);
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*decoded = NULL;
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}
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}
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}
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}
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BIO_free_all(b64);
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return rc;
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}
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#endif
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