uap-cpp/parse_memcached.cpp at master · aitech-lab/uap-cpp · GitHub

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#include <iostream>

#include <iomanip>

#include <istream>

#include <vector>

#include <queue>

#include <memory>

#include <stdexcept>

#include <string>

#include <sstream>

#include <fstream>

#include <regex>

using namespace std;

#include "UaParser.h"

using namespace uap_cpp;

#include "json.hpp"

using json=nlohmann::json;

#include "base64.h"

// gzip

#include "zstr.hpp"

// gcc hash seed for murmur

// https://github.com/gcc-mirror/gcc/blob/41d6b10e96a1de98e90a7c0378437c3255814b16/libstdc%2B%2B-v3/include/bits/functional_hash.h#L191

#define SEED 0xc70f6907

#include "MurmurHash2.h"

// UserAgentParser p("../uap-core/regexes.yaml");

UserAgentParser uap("regexes.yaml");

#include "metrics.h"

// {

// "_http_headers":{

// "Accept":["*/*"],

// "Accept-Encoding":["gzip, deflate, br"],

// "Accept-Language":["ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7"],

// "Connection":["close"],

// "Content-Length":["2607"],

// "Content-Type":["application/json;charset=UTF-8"],

// "Origin":["https://domain.org"],

// "Referer":["https://domain.org/"],

// "Sec-Ch-Ua":["\\"Google Chrome\\";v=\\"111\\", \\"Not(A:Brand\\";v=\\"8\\", \\"Chromium\\";v=\\"111\\"],

// "Sec-Ch-Ua-Mobile":["?1"],

// "Sec-Ch-Ua-Platform":["\\"Android\\"],

// "Sec-Fetch-Dest":["empty"],

// "Sec-Fetch-Mode":["cors"],

// "Sec-Fetch-Site":["cross-site"],

// "User-Agent":["Mozilla/5.0 (Linux; Android 12; SM-A315F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Mobile Safari/537.36"],

// "X-Add-Http-Headers":["1"],

// "X-Forwarded-For":["77.45.187.11"],

// "X-Pid":["2890426"],

// "X-User-Id":["oYB32eJDRg8hrzCyvCovEA"]

// }

struct url {

public:

url(const string& url_s) {

this->parse(url_s);

}

string protocol, host, path, query;

private:

void parse(const string& url_s);

};

void url::parse(const string& url_s) {

const string prot_end("://");

string::const_iterator prot_i = search(

url_s.begin(),

url_s.end(),

prot_end.begin(),

prot_end.end());

protocol.reserve(distance(url_s.begin(), prot_i));

transform(

url_s.begin(),

prot_i,

back_inserter(protocol),

[](unsigned char c) { return tolower(c); }

); // protocol is icase

if( prot_i == url_s.end()) return;

advance(prot_i, prot_end.length());

string::const_iterator path_i = find(prot_i, url_s.end(), '/');

host.reserve(distance(prot_i, path_i));

transform(

prot_i,

path_i,

back_inserter(host),

[](unsigned char c) { return tolower(c); }

); // host is icase

string::const_iterator query_i = find(path_i, url_s.end(), '?');

path.assign(path_i, query_i);

if(query_i != url_s.end()) ++query_i;

query.assign(query_i, url_s.end());

}

inline void parse_header(stringstream& ss, json header) {

// parse and allocate url object.

url u(header["Referer"][0]);

ss << "\t" << u.host;

ss << "\t" << u.path;

}

inline void parse_fp(stringstream& ss, json fp) {

string s;

// c0 = unpack("d", comps[0]) // double

// c1 = unpack("i", comps[1]) // signed int

// c2 = unpack("I", comps[2]) // unsigned int

// c3 = unpack("B", comps[3]) // unsigned byte

json c = fp["components"];

uint32_t

fp_hash=0,

fp_stable_hash=0,

fp_unstable_hash=0;

string data = c.dump();

fp_hash = MurmurHash2(data.data(), data.size(), SEED);

s = base64_decode(c[0]);

// cerr << s.size() << "\t";

double

c0[s.size()/sizeof(double)],

c0_stable[s.size()/sizeof(double)];

memcpy(c0, s.data(), s.size());

memcpy(c0_stable, s.data(), s.size());

// reset unstable metrics

for (int&i : metrics_v01::fp_unstable_block_0) c0_stable[i] = 0.0;

fp_stable_hash = fp_stable_hash ^ MurmurHash2(&c0_stable, sizeof(c0_stable), SEED);

s = base64_decode(c[1]);

// cerr << s.size() << "\t";

int32_t c1[s.size()/sizeof(int32_t)];

memcpy(c1, s.data(), s.size());

s = base64_decode(c[2]);

// cerr << s.size() << "\t";

uint32_t

c2[s.size()/sizeof(uint32_t)],

c2_stable[s.size()/sizeof(uint32_t)];

memcpy(c2, s.data(), s.size());

memcpy(c2_stable, s.data(), s.size());

// reset unstable metrics

for (int&i : metrics_v01::fp_unstable_block_2) c2_stable[i]=0;

fp_stable_hash = fp_stable_hash ^ MurmurHash2(&c2_stable, sizeof(c2_stable), SEED);

s = base64_decode(c[3]);

// cerr << s.size() << "\n";u

uint8_t c3[s.size()/sizeof(uint8_t)];

memcpy(c3, s.data(), s.size());

stringstream unstable_hash_ss;

for (int&i : metrics_v01::fp_unstable_block_0) unstable_hash_ss << c0[i] << ",";

for (int&i : metrics_v01::fp_unstable_block_2) unstable_hash_ss << c2[i] << ",";

string unstable_hash = ss.str();

fp_unstable_hash = MurmurHash2(unstable_hash.data(), unstable_hash.size(), SEED);

ss << "\t" << fp_hash;

ss << "\t" << fp_stable_hash;

ss << "\t" << fp_unstable_hash;

for(double v : c0) ss << "\t" << v;

for(int32_t v : c1) ss << "\t" << v;

for(uint32_t v : c2) ss << "\t" << v;

for(uint8_t v : c3) ss << "\t" << unsigned(v);

}

inline void parse_json(stringstream& ss, string data) {

// unescape double escaped jsons

if(data[0] == '"') {

data = regex_replace(data, regex("^\"|\"$"), "");

data = regex_replace(data, regex("\\\\\\\""), "\"");

if (data[1]=='\\')

data = regex_replace(data, regex("\\\\\\\""), "\"");

}

json j;

j = json::parse(data);

if (!j["err"].is_string()) {

parse_header(ss, j["_http_headers"]);

parse_fp (ss, j["fp"]);

}

inline void parse_ua(stringstream& ss, string data) {

uint32_t ua_hash = MurmurHash2(data.data(), data.size(), SEED);

string ua_chars = regex_replace(data, regex("[^A-za-z]*"), "");

uint32_t ua_chars_hash = MurmurHash2(ua_chars.data(), ua_chars.size(), SEED);

string ua_digits = regex_replace(data, regex("[^0-9]*"), "");

uint32_t ua_digits_hash = MurmurHash2(ua_digits.data(), ua_digits.size(), SEED);

ss << "\t" << ua_hash

<< "\t" << ua_chars_hash

<< "\t" << ua_digits_hash

;

auto ua = uap.parse(data);

ss << "\t" << ua.browser.family

<< "\t" << ua.browser.major

<< "\t" << ua.browser.minor

<< "\t" << ua.browser.patch

<< "\t" << ua.browser.patch_minor

<< "\t" << ua.os.family

<< "\t" << ua.os.major

<< "\t" << ua.os.minor

<< "\t" << ua.os.patch

<< "\t" << ua.os.patch_minor

<< "\t" << ua.device.family

<< "\t" << ua.device.brand

<< "\t" << ua.device.model

;

}

inline void parse_line(stringstream& ss, string line) {

istringstream is(line);

vector<string> tokens;

string token;

while(getline(is, token, '\t')) {

if(!token.empty()) {

tokens.push_back(token);

}

if(tokens.size()==6) tokens.push_back("");

if(tokens.size()!=7) return;

ss << tokens[0] // first

<< "\t" << tokens[1]

<< "\t" << tokens[2]

<< "\t" << tokens[3]

;

parse_ua (ss, tokens[4]);

parse_json(ss, tokens[5]);

ss << "\t" << tokens[6];

}

inline void process_stream(istream& st) {

for(string line; getline(st, line);) {

stringstream ss;

ss << setprecision(17);

try {

parse_line(ss, line);

cout << ss.str() << endl;

}

catch (const exception &exc) {

cerr << exc.what() << endl;

// cerr << line << endl;

};

}

int main(int argc, char* argv[]) {

if(argc>1) {

string gzip_file = argv[1];

ifstream zst (gzip_file, ios::binary);

zstr::istream st(zst);

process_stream(st);

} else {

process_stream(cin);

}

return 0;

}

uap-cpp/parse_memcached.cpp at master · aitech-lab/uap-cpp · GitHub

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