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Fixed: Compiler error on libb64/cencode.h
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6 files changed

+87
-69
lines changed

6 files changed

+87
-69
lines changed

‎changelog.md‎

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# Changelog
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## Version 2.9.4
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- Fixed: Compiler error on libb64/cencode.h when ESP8266WebServer is included before SinricPro.h.
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## Version 2.9.3
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- RangeController accepts callbacks for integer and floating point values
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- Event limitation takes into account different instances for generic controllers

‎library.json‎

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"maintainer": true
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}
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],
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"version": "2.9.3",
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"version": "2.9.4",
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"frameworks": "arduino",
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"platforms": [
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"espressif8266",

‎library.properties‎

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name=SinricPro
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version=2.9.3
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version=2.9.4
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author=Boris Jaeger <sivar2311@gmail.com>
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maintainer=Boris Jaeger <sivar2311@gmail.com>
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sentence=Library for https://sinric.pro - simple way to connect your device to alexa

‎src/SinricProConfig.h‎

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// Version Configuration
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#define SINRICPRO_VERSION_MAJOR 2
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#define SINRICPRO_VERSION_MINOR 9
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#define SINRICPRO_VERSION_REVISION 3
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#define SINRICPRO_VERSION_REVISION 4
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#define SINRICPRO_VERSION STR(SINRICPRO_VERSION_MAJOR) "." STR(SINRICPRO_VERSION_MINOR) "." STR(SINRICPRO_VERSION_REVISION)
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#define SINRICPRO_VERSION_STR "SinricPro (v" SINRICPRO_VERSION ")"
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#define SINRICPRO_VERISON_INT SINRICPRO_VERSION_MAJOR * 1000000 + SINRICPRO_VERSION_MINOR * 1000 + SINRICPRO_VERSION_REVISION

‎src/SinricProSignature.cpp‎

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/*
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* Copyright (c) 2019 Sinric. All rights reserved.
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* Licensed under Creative Commons Attribution-Share Alike (CC BY-SA)
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*
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* This file is part of the Sinric Pro (https://github.com/sinricpro/)
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*/
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#include <WString.h>
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#include <ArduinoJson.h>
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#include "SinricProSignature.h"
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#if defined (ESP8266)
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#include <bearssl/bearssl_hmac.h>
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#endif
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#if defined (ESP32)
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#include "mbedtls/md.h"
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#endif
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#include <libb64/cencode.h>
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String HMACbase64(const String &message, const String &key) {
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byte hmacResult[32];
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#if defined(ESP8266)
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br_hmac_key_context keyContext; // Holds general HMAC info
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br_hmac_context hmacContext; // Holds general HMAC info + specific info for the current operation
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br_hmac_key_init(&keyContext, &br_sha256_vtable, key.c_str(), key.length());
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br_hmac_init(&hmacContext, &keyContext, 32);
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br_hmac_update(&hmacContext, message.c_str(), message.length());
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br_hmac_out(&hmacContext, hmacResult);
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#endif
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#if defined(ESP32)
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mbedtls_md_context_t ctx;
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mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
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mbedtls_md_init(&ctx);
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mbedtls_md_setup(&ctx, mbedtls_md_info_from_type(md_type), 1);
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mbedtls_md_hmac_starts(&ctx, (const unsigned char*) key.c_str(), key.length());
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mbedtls_md_hmac_update(&ctx, (const unsigned char*) message.c_str(), message.length());
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mbedtls_md_hmac_finish(&ctx, hmacResult);
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mbedtls_md_free(&ctx);
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#endif
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base64_encodestate _state;
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base64_init_encodestate(&_state);
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#if defined(base64_encode_expected_len_nonewlines)
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_state.stepsnewline = -1;
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#endif
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char base64encodedHMAC[base64_encode_expected_len(32) + 1];
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int len = base64_encode_block((const char *)hmacResult, 32, base64encodedHMAC, &_state);
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base64_encode_blockend((base64encodedHMAC + len), &_state);
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return String { base64encodedHMAC };
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}
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String extractPayload(const char *message) {
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String messageStr(message);
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int beginPayload = messageStr.indexOf("\"payload\":");
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int endPayload = messageStr.indexOf(",\"signature\"", beginPayload);
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if (beginPayload >0 && endPayload >0) return messageStr.substring(beginPayload+10, endPayload);
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return "";
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}
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String calculateSignature(const char* key, String payload) {
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if (payload != "") return HMACbase64(payload, String(key));
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return "";
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}
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String signMessage(String key, JsonDocument &jsonMessage) {
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if (!jsonMessage.containsKey("signature")) jsonMessage.createNestedObject("signature");
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jsonMessage["signature"]["HMAC"] = calculateSignature(key.c_str(), jsonMessage["payload"]);
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String signedMessageString;
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serializeJson(jsonMessage, signedMessageString);
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return signedMessageString;
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}

‎src/SinricProSignature.h‎

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#ifndef _SIGNATURE_H_
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#define _SIGNATURE_H_
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#if defined (ESP8266)
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#include <bearssl/bearssl_hmac.h>
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#endif
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#if defined (ESP32)
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#include "mbedtls/md.h"
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#endif
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#include <libb64/cencode.h>
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String HMACbase64(const String &message, const String &key) {
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byte hmacResult[32];
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#if defined(ESP8266)
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br_hmac_key_context keyContext; // Holds general HMAC info
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br_hmac_context hmacContext; // Holds general HMAC info + specific info for the current operation
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br_hmac_key_init(&keyContext, &br_sha256_vtable, key.c_str(), key.length());
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br_hmac_init(&hmacContext, &keyContext, 32);
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br_hmac_update(&hmacContext, message.c_str(), message.length());
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br_hmac_out(&hmacContext, hmacResult);
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#endif
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#if defined(ESP32)
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mbedtls_md_context_t ctx;
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mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
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mbedtls_md_init(&ctx);
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mbedtls_md_setup(&ctx, mbedtls_md_info_from_type(md_type), 1);
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mbedtls_md_hmac_starts(&ctx, (const unsigned char*) key.c_str(), key.length());
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mbedtls_md_hmac_update(&ctx, (const unsigned char*) message.c_str(), message.length());
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mbedtls_md_hmac_finish(&ctx, hmacResult);
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mbedtls_md_free(&ctx);
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#endif
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base64_encodestate _state;
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base64_init_encodestate(&_state);
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#if defined(base64_encode_expected_len_nonewlines)
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_state.stepsnewline = -1;
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#endif
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char base64encodedHMAC[base64_encode_expected_len(32) + 1];
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int len = base64_encode_block((const char *)hmacResult, 32, base64encodedHMAC, &_state);
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base64_encode_blockend((base64encodedHMAC + len), &_state);
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return String { base64encodedHMAC };
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}
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String extractPayload(const char *message) {
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String messageStr(message);
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int beginPayload = messageStr.indexOf("\"payload\":");
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int endPayload = messageStr.indexOf(",\"signature\"", beginPayload);
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if (beginPayload >0 && endPayload >0) return messageStr.substring(beginPayload+10, endPayload);
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return "";
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}
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String calculateSignature(const char* key, String payload) {
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if (payload != "") return HMACbase64(payload, String(key));
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return "";
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}
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String signMessage(String key, JsonDocument &jsonMessage) {
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if (!jsonMessage.containsKey("signature")) jsonMessage.createNestedObject("signature");
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jsonMessage["signature"]["HMAC"] = calculateSignature(key.c_str(), jsonMessage["payload"]);
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String signedMessageString;
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serializeJson(jsonMessage, signedMessageString);
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return signedMessageString;
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}
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String HMACbase64(const String &message, const String &key);
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String extractPayload(const char *message);
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String calculateSignature(const char* key, String payload);
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String signMessage(String key, JsonDocument &jsonMessage);
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#endif // _SIGNATURE_H_

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