timestamp added to blocks
moneroexamples
8 years ago
parent
e710234fcb
commit
2cf9714d21
@ -0,0 +1,196 @@
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/*
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*
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* TinySHA1 - a header only implementation of the SHA1 algorithm in C++. Based
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* on the implementation in boost::uuid::details.
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*
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* SHA1 Wikipedia Page: http://en.wikipedia.org/wiki/SHA-1
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*
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* Copyright (c) 2012-22 SAURAV MOHAPATRA <mohaps@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _TINY_SHA1_HPP_
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#define _TINY_SHA1_HPP_
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <stdint.h>
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namespace sha1
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{
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class SHA1
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{
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public:
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typedef uint32_t digest32_t[5];
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typedef uint8_t digest8_t[20];
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inline static uint32_t LeftRotate(uint32_t value, size_t count) {
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return (value << count) ^ (value >> (32-count));
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}
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SHA1(){ reset(); }
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virtual ~SHA1() {}
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SHA1(const SHA1& s) { *this = s; }
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const SHA1& operator = (const SHA1& s) {
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memcpy(m_digest, s.m_digest, 5 * sizeof(uint32_t));
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memcpy(m_block, s.m_block, 64);
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m_blockByteIndex = s.m_blockByteIndex;
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m_byteCount = s.m_byteCount;
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return *this;
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}
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SHA1& reset() {
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m_digest[0] = 0x67452301;
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m_digest[1] = 0xEFCDAB89;
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m_digest[2] = 0x98BADCFE;
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m_digest[3] = 0x10325476;
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m_digest[4] = 0xC3D2E1F0;
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m_blockByteIndex = 0;
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m_byteCount = 0;
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return *this;
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}
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SHA1& processByte(uint8_t octet) {
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this->m_block[this->m_blockByteIndex++] = octet;
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++this->m_byteCount;
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if(m_blockByteIndex == 64) {
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this->m_blockByteIndex = 0;
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processBlock();
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}
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return *this;
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}
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SHA1& processBlock(const void* const start, const void* const end) {
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const uint8_t* begin = static_cast<const uint8_t*>(start);
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const uint8_t* finish = static_cast<const uint8_t*>(end);
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while(begin != finish) {
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processByte(*begin);
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begin++;
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}
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return *this;
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}
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SHA1& processBytes(const void* const data, size_t len) {
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const uint8_t* block = static_cast<const uint8_t*>(data);
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processBlock(block, block + len);
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return *this;
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}
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const uint32_t* getDigest(digest32_t digest) {
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size_t bitCount = this->m_byteCount * 8;
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processByte(0x80);
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if (this->m_blockByteIndex > 56) {
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while (m_blockByteIndex != 0) {
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processByte(0);
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}
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while (m_blockByteIndex < 56) {
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processByte(0);
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}
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} else {
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while (m_blockByteIndex < 56) {
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processByte(0);
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}
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}
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processByte(0);
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processByte(0);
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processByte(0);
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processByte(0);
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processByte( static_cast<unsigned char>((bitCount>>24) & 0xFF));
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processByte( static_cast<unsigned char>((bitCount>>16) & 0xFF));
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processByte( static_cast<unsigned char>((bitCount>>8 ) & 0xFF));
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processByte( static_cast<unsigned char>((bitCount) & 0xFF));
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memcpy(digest, m_digest, 5 * sizeof(uint32_t));
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return digest;
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}
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const uint8_t* getDigestBytes(digest8_t digest) {
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digest32_t d32;
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getDigest(d32);
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size_t di = 0;
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digest[di++] = ((d32[0] >> 24) & 0xFF);
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digest[di++] = ((d32[0] >> 16) & 0xFF);
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digest[di++] = ((d32[0] >> 8) & 0xFF);
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digest[di++] = ((d32[0]) & 0xFF);
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digest[di++] = ((d32[1] >> 24) & 0xFF);
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digest[di++] = ((d32[1] >> 16) & 0xFF);
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digest[di++] = ((d32[1] >> 8) & 0xFF);
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digest[di++] = ((d32[1]) & 0xFF);
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digest[di++] = ((d32[2] >> 24) & 0xFF);
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digest[di++] = ((d32[2] >> 16) & 0xFF);
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digest[di++] = ((d32[2] >> 8) & 0xFF);
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digest[di++] = ((d32[2]) & 0xFF);
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digest[di++] = ((d32[3] >> 24) & 0xFF);
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digest[di++] = ((d32[3] >> 16) & 0xFF);
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digest[di++] = ((d32[3] >> 8) & 0xFF);
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digest[di++] = ((d32[3]) & 0xFF);
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digest[di++] = ((d32[4] >> 24) & 0xFF);
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digest[di++] = ((d32[4] >> 16) & 0xFF);
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digest[di++] = ((d32[4] >> 8) & 0xFF);
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digest[di++] = ((d32[4]) & 0xFF);
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return digest;
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}
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protected:
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void processBlock() {
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uint32_t w[80];
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for (size_t i = 0; i < 16; i++) {
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w[i] = (m_block[i*4 + 0] << 24);
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w[i] |= (m_block[i*4 + 1] << 16);
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w[i] |= (m_block[i*4 + 2] << 8);
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w[i] |= (m_block[i*4 + 3]);
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}
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for (size_t i = 16; i < 80; i++) {
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w[i] = LeftRotate((w[i-3] ^ w[i-8] ^ w[i-14] ^ w[i-16]), 1);
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}
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uint32_t a = m_digest[0];
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uint32_t b = m_digest[1];
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uint32_t c = m_digest[2];
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uint32_t d = m_digest[3];
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uint32_t e = m_digest[4];
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for (std::size_t i=0; i<80; ++i) {
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uint32_t f = 0;
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uint32_t k = 0;
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if (i<20) {
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f = (b & c) | (~b & d);
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k = 0x5A827999;
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} else if (i<40) {
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f = b ^ c ^ d;
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k = 0x6ED9EBA1;
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} else if (i<60) {
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f = (b & c) | (b & d) | (c & d);
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k = 0x8F1BBCDC;
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} else {
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f = b ^ c ^ d;
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k = 0xCA62C1D6;
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}
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uint32_t temp = LeftRotate(a, 5) + f + e + k + w[i];
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e = d;
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d = c;
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c = LeftRotate(b, 30);
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b = a;
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a = temp;
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}
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m_digest[0] += a;
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m_digest[1] += b;
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m_digest[2] += c;
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m_digest[3] += d;
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m_digest[4] += e;
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}
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private:
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digest32_t m_digest;
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uint8_t m_block[64];
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size_t m_blockByteIndex;
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size_t m_byteCount;
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};
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}
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#endif
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@ -0,0 +1,482 @@
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#pragma once
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#include "socket_adaptors.h"
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#include "http_request.h"
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#include "TinySHA1.hpp"
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namespace crow
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{
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namespace websocket
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{
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enum class WebSocketReadState
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{
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MiniHeader,
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Len16,
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Len64,
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Mask,
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Payload,
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};
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struct connection
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{
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virtual void send_binary(const std::string& msg) = 0;
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virtual void send_text(const std::string& msg) = 0;
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virtual void close(const std::string& msg = "quit") = 0;
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virtual ~connection(){}
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};
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template <typename Adaptor>
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class Connection : public connection
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{
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public:
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Connection(const crow::request& req, Adaptor&& adaptor,
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std::function<void(crow::websocket::connection&)> open_handler,
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std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler,
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std::function<void(crow::websocket::connection&, const std::string&)> close_handler,
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std::function<void(crow::websocket::connection&)> error_handler)
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: adaptor_(std::move(adaptor)), open_handler_(std::move(open_handler)), message_handler_(std::move(message_handler)), close_handler_(std::move(close_handler)), error_handler_(std::move(error_handler))
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{
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if (req.get_header_value("upgrade") != "websocket")
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{
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adaptor.close();
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delete this;
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return;
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}
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// Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
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// Sec-WebSocket-Version: 13
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std::string magic = req.get_header_value("Sec-WebSocket-Key") + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
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sha1::SHA1 s;
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s.processBytes(magic.data(), magic.size());
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uint8_t digest[20];
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s.getDigestBytes(digest);
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start(crow::utility::base64encode((char*)digest, 20));
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}
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template<typename CompletionHandler>
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void dispatch(CompletionHandler handler)
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{
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adaptor_.get_io_service().dispatch(handler);
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}
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template<typename CompletionHandler>
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void post(CompletionHandler handler)
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{
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adaptor_.get_io_service().post(handler);
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}
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void send_pong(const std::string& msg)
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{
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dispatch([this, msg]{
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char buf[3] = "\x8A\x00";
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buf[1] += msg.size();
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write_buffers_.emplace_back(buf, buf+2);
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write_buffers_.emplace_back(msg);
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do_write();
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});
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}
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void send_binary(const std::string& msg) override
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{
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dispatch([this, msg]{
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auto header = build_header(2, msg.size());
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write_buffers_.emplace_back(std::move(header));
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write_buffers_.emplace_back(msg);
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do_write();
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});
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}
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void send_text(const std::string& msg) override
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{
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dispatch([this, msg]{
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auto header = build_header(1, msg.size());
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write_buffers_.emplace_back(std::move(header));
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write_buffers_.emplace_back(msg);
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do_write();
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});
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}
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void close(const std::string& msg) override
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{
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dispatch([this, msg]{
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has_sent_close_ = true;
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if (has_recv_close_ && !is_close_handler_called_)
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{
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is_close_handler_called_ = true;
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if (close_handler_)
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close_handler_(*this, msg);
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}
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auto header = build_header(0x8, msg.size());
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write_buffers_.emplace_back(std::move(header));
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write_buffers_.emplace_back(msg);
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do_write();
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});
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}
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protected:
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std::string build_header(int opcode, size_t size)
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{
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char buf[2+8] = "\x80\x00";
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buf[0] += opcode;
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if (size < 126)
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{
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buf[1] += size;
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return {buf, buf+2};
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}
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else if (size < 0x10000)
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{
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buf[1] += 126;
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*(uint16_t*)(buf+2) = (uint16_t)size;
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return {buf, buf+4};
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}
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else
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{
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buf[1] += 127;
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*(uint64_t*)(buf+2) = (uint64_t)size;
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return {buf, buf+10};
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}
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}
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void start(std::string&& hello)
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{
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static std::string header = "HTTP/1.1 101 Switching Protocols\r\n"
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"Upgrade: websocket\r\n"
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"Connection: Upgrade\r\n"
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"Sec-WebSocket-Accept: ";
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static std::string crlf = "\r\n";
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write_buffers_.emplace_back(header);
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write_buffers_.emplace_back(std::move(hello));
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write_buffers_.emplace_back(crlf);
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write_buffers_.emplace_back(crlf);
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do_write();
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if (open_handler_)
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open_handler_(*this);
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do_read();
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}
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void do_read()
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{
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is_reading = true;
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switch(state_)
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{
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case WebSocketReadState::MiniHeader:
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{
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//boost::asio::async_read(adaptor_.socket(), boost::asio::buffer(&mini_header_, 1),
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adaptor_.socket().async_read_some(boost::asio::buffer(&mini_header_, 2),
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[this](const boost::system::error_code& ec, std::size_t bytes_transferred)
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{
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is_reading = false;
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mini_header_ = htons(mini_header_);
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#ifdef CROW_ENABLE_DEBUG
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if (!ec && bytes_transferred != 2)
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{
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throw std::runtime_error("WebSocket:MiniHeader:async_read fail:asio bug?");
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}
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#endif
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if (!ec && ((mini_header_ & 0x80) == 0x80))
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{
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if ((mini_header_ & 0x7f) == 127)
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{
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state_ = WebSocketReadState::Len64;
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}
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else if ((mini_header_ & 0x7f) == 126)
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{
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state_ = WebSocketReadState::Len16;
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}
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else
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{
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remaining_length_ = mini_header_ & 0x7f;
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state_ = WebSocketReadState::Mask;
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}
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do_read();
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}
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else
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{
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close_connection_ = true;
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adaptor_.close();
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if (error_handler_)
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error_handler_(*this);
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check_destroy();
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}
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});
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}
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break;
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case WebSocketReadState::Len16:
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{
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remaining_length_ = 0;
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boost::asio::async_read(adaptor_.socket(), boost::asio::buffer(&remaining_length_, 2),
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[this](const boost::system::error_code& ec, std::size_t bytes_transferred)
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{
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is_reading = false;
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remaining_length_ = ntohs(*(uint16_t*)&remaining_length_);
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#ifdef CROW_ENABLE_DEBUG
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if (!ec && bytes_transferred != 2)
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{
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throw std::runtime_error("WebSocket:Len16:async_read fail:asio bug?");
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}
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#endif
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if (!ec)
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{
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state_ = WebSocketReadState::Mask;
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do_read();
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}
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else
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{
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close_connection_ = true;
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adaptor_.close();
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if (error_handler_)
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error_handler_(*this);
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check_destroy();
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}
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});
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}
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break;
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case WebSocketReadState::Len64:
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{
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boost::asio::async_read(adaptor_.socket(), boost::asio::buffer(&remaining_length_, 8),
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[this](const boost::system::error_code& ec, std::size_t bytes_transferred)
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{
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is_reading = false;
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remaining_length_ = ((1==ntohl(1)) ? (remaining_length_) : ((uint64_t)ntohl((remaining_length_) & 0xFFFFFFFF) << 32) | ntohl((remaining_length_) >> 32));
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#ifdef CROW_ENABLE_DEBUG
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if (!ec && bytes_transferred != 8)
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{
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throw std::runtime_error("WebSocket:Len16:async_read fail:asio bug?");
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}
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#endif
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if (!ec)
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{
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state_ = WebSocketReadState::Mask;
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do_read();
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}
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else
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{
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close_connection_ = true;
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adaptor_.close();
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if (error_handler_)
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error_handler_(*this);
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check_destroy();
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}
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});
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}
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break;
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case WebSocketReadState::Mask:
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boost::asio::async_read(adaptor_.socket(), boost::asio::buffer((char*)&mask_, 4),
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[this](const boost::system::error_code& ec, std::size_t bytes_transferred)
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{
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is_reading = false;
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#ifdef CROW_ENABLE_DEBUG
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if (!ec && bytes_transferred != 4)
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{
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throw std::runtime_error("WebSocket:Mask:async_read fail:asio bug?");
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}
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#endif
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if (!ec)
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{
|
||||
state_ = WebSocketReadState::Payload;
|
||||
do_read();
|
||||
}
|
||||
else
|
||||
{
|
||||
close_connection_ = true;
|
||||
if (error_handler_)
|
||||
error_handler_(*this);
|
||||
adaptor_.close();
|
||||
}
|
||||
});
|
||||
break;
|
||||
case WebSocketReadState::Payload:
|
||||
{
|
||||
size_t to_read = buffer_.size();
|
||||
if (remaining_length_ < to_read)
|
||||
to_read = remaining_length_;
|
||||
adaptor_.socket().async_read_some( boost::asio::buffer(buffer_, to_read),
|
||||
[this](const boost::system::error_code& ec, std::size_t bytes_transferred)
|
||||
{
|
||||
is_reading = false;
|
||||
|
||||
if (!ec)
|
||||
{
|
||||
fragment_.insert(fragment_.end(), buffer_.begin(), buffer_.begin() + bytes_transferred);
|
||||
remaining_length_ -= bytes_transferred;
|
||||
if (remaining_length_ == 0)
|
||||
{
|
||||
handle_fragment();
|
||||
state_ = WebSocketReadState::MiniHeader;
|
||||
do_read();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
close_connection_ = true;
|
||||
if (error_handler_)
|
||||
error_handler_(*this);
|
||||
adaptor_.close();
|
||||
}
|
||||
});
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
bool is_FIN()
|
||||
{
|
||||
return mini_header_ & 0x8000;
|
||||
}
|
||||
|
||||
int opcode()
|
||||
{
|
||||
return (mini_header_ & 0x0f00) >> 8;
|
||||
}
|
||||
|
||||
void handle_fragment()
|
||||
{
|
||||
for(decltype(fragment_.length()) i = 0; i < fragment_.length(); i ++)
|
||||
{
|
||||
fragment_[i] ^= ((char*)&mask_)[i%4];
|
||||
}
|
||||
switch(opcode())
|
||||
{
|
||||
case 0: // Continuation
|
||||
{
|
||||
message_ += fragment_;
|
||||
if (is_FIN())
|
||||
{
|
||||
if (message_handler_)
|
||||
message_handler_(*this, message_, is_binary_);
|
||||
message_.clear();
|
||||
}
|
||||
}
|
||||
case 1: // Text
|
||||
{
|
||||
is_binary_ = false;
|
||||
message_ += fragment_;
|
||||
if (is_FIN())
|
||||
{
|
||||
if (message_handler_)
|
||||
message_handler_(*this, message_, is_binary_);
|
||||
message_.clear();
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 2: // Binary
|
||||
{
|
||||
is_binary_ = true;
|
||||
message_ += fragment_;
|
||||
if (is_FIN())
|
||||
{
|
||||
if (message_handler_)
|
||||
message_handler_(*this, message_, is_binary_);
|
||||
message_.clear();
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 0x8: // Close
|
||||
{
|
||||
has_recv_close_ = true;
|
||||
if (!has_sent_close_)
|
||||
{
|
||||
close(fragment_);
|
||||
}
|
||||
else
|
||||
{
|
||||
adaptor_.close();
|
||||
close_connection_ = true;
|
||||
if (!is_close_handler_called_)
|
||||
{
|
||||
if (close_handler_)
|
||||
close_handler_(*this, fragment_);
|
||||
is_close_handler_called_ = true;
|
||||
}
|
||||
check_destroy();
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 0x9: // Ping
|
||||
{
|
||||
send_pong(fragment_);
|
||||
}
|
||||
break;
|
||||
case 0xA: // Pong
|
||||
{
|
||||
pong_received_ = true;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
fragment_.clear();
|
||||
}
|
||||
|
||||
void do_write()
|
||||
{
|
||||
if (sending_buffers_.empty())
|
||||
{
|
||||
sending_buffers_.swap(write_buffers_);
|
||||
std::vector<boost::asio::const_buffer> buffers;
|
||||
buffers.reserve(sending_buffers_.size());
|
||||
for(auto& s:sending_buffers_)
|
||||
{
|
||||
buffers.emplace_back(boost::asio::buffer(s));
|
||||
}
|
||||
boost::asio::async_write(adaptor_.socket(), buffers,
|
||||
[&](const boost::system::error_code& ec, std::size_t /*bytes_transferred*/)
|
||||
{
|
||||
sending_buffers_.clear();
|
||||
if (!ec && !close_connection_)
|
||||
{
|
||||
if (!write_buffers_.empty())
|
||||
do_write();
|
||||
if (has_sent_close_)
|
||||
close_connection_ = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
close_connection_ = true;
|
||||
check_destroy();
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
void check_destroy()
|
||||
{
|
||||
//if (has_sent_close_ && has_recv_close_)
|
||||
if (!is_close_handler_called_)
|
||||
if (close_handler_)
|
||||
close_handler_(*this, "uncleanly");
|
||||
if (sending_buffers_.empty() && !is_reading)
|
||||
delete this;
|
||||
}
|
||||
private:
|
||||
Adaptor adaptor_;
|
||||
|
||||
std::vector<std::string> sending_buffers_;
|
||||
std::vector<std::string> write_buffers_;
|
||||
|
||||
boost::array<char, 4096> buffer_;
|
||||
bool is_binary_;
|
||||
std::string message_;
|
||||
std::string fragment_;
|
||||
WebSocketReadState state_{WebSocketReadState::MiniHeader};
|
||||
uint64_t remaining_length_{0};
|
||||
bool close_connection_{false};
|
||||
bool is_reading{false};
|
||||
uint32_t mask_;
|
||||
uint16_t mini_header_;
|
||||
bool has_sent_close_{false};
|
||||
bool has_recv_close_{false};
|
||||
bool error_occured_{false};
|
||||
bool pong_received_{false};
|
||||
bool is_close_handler_called_{false};
|
||||
|
||||
std::function<void(crow::websocket::connection&)> open_handler_;
|
||||
std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler_;
|
||||
std::function<void(crow::websocket::connection&, const std::string&)> close_handler_;
|
||||
std::function<void(crow::websocket::connection&)> error_handler_;
|
||||
};
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue