qing
b07dbf2da5
启用 handleLogin 中被注释的 last_login 更新：经 DbC::call_msg 以 "$now" 哨兵（db 日期适配层转为服务端 UTC 时间）写入，失败按惯例 THROW_EX_CUSTOM 抛 500 由 wrapper 统一处理。README 版本节同步 （原仍停留在 0.3.0-security）。
1335 lines
43 KiB
C++
1335 lines
43 KiB
C++
#include <us/HttpServer.hpp>
|
||
#include <us/HttpClient.hpp>
|
||
#include <us/MyRSA.hpp>
|
||
#include <us/Base64.hpp>
|
||
#include <us/SHA256.hpp>
|
||
#include <us/Sqlite3.hpp>
|
||
#include <iostream>
|
||
#include <cctype>
|
||
#include <typeinfo>
|
||
#include <memory>
|
||
#include <csignal>
|
||
#include <random>
|
||
#include <regex>
|
||
#include <boost/json.hpp>
|
||
#include <boost/program_options.hpp>
|
||
#include <openssl/evp.h>
|
||
#include <openssl/rand.h>
|
||
#include <openssl/kdf.h>
|
||
#include "ExpBase.hpp"
|
||
#include "LocalTime.hpp"
|
||
#include "Conf.hpp"
|
||
#include "DbC.hpp"
|
||
|
||
using namespace pmc::net;
|
||
using namespace qing;
|
||
namespace json = boost::json;
|
||
namespace po = boost::program_options;
|
||
|
||
constexpr const char *_VER = "0.5.1";
|
||
|
||
//////////////////////////////////
|
||
#include <sstream>
|
||
#include <vector>
|
||
#include <string>
|
||
|
||
/* by suiyu
|
||
*
|
||
* 有一丢丢消耗资源（qing） */
|
||
std::vector<std::string> split(const std::string& s, char delim) {
|
||
std::vector<std::string> tokens;
|
||
std::istringstream stream(s);
|
||
std::string token;
|
||
while (std::getline(stream, token, delim)) {
|
||
// 跳过空串：避免 "a;b;" 末尾分号产生 "" 元素
|
||
// 防御白名单匹配场景下空串被误判为命中
|
||
if (!token.empty()) {
|
||
tokens.push_back(token);
|
||
}
|
||
}
|
||
return tokens;
|
||
}
|
||
|
||
//////////////////////////////////
|
||
// PBKDF2-HMAC-SHA256 password hashing
|
||
//////////////////////////////////
|
||
class PBKDF2Hasher {
|
||
public:
|
||
static const int ITERATIONS = 100000;
|
||
static const int SALT_LEN = 16;
|
||
static const int HASH_LEN = 32;
|
||
|
||
static std::string hash_password(const std::string& password) {
|
||
unsigned char salt[SALT_LEN];
|
||
RAND_bytes(salt, SALT_LEN);
|
||
|
||
unsigned char hash[HASH_LEN];
|
||
PKCS5_PBKDF2_HMAC(
|
||
password.c_str(), password.size(),
|
||
salt, SALT_LEN,
|
||
ITERATIONS,
|
||
EVP_sha256(),
|
||
HASH_LEN, hash
|
||
);
|
||
|
||
// Format: pbkdf2:100000:<hex_salt>:<hex_hash>
|
||
std::string salt_hex = bytes_to_hex(salt, SALT_LEN);
|
||
std::string hash_hex = bytes_to_hex(hash, HASH_LEN);
|
||
return "pbkdf2:" + std::to_string(ITERATIONS) + ":" + salt_hex + ":" + hash_hex;
|
||
}
|
||
|
||
static bool verify_password(const std::string& password, const std::string& stored) {
|
||
// Parse stored hash
|
||
if (stored.substr(0, 7) != "pbkdf2:") {
|
||
return false;
|
||
}
|
||
|
||
auto parts = split(stored, ':');
|
||
if (parts.size() != 4) return false;
|
||
|
||
int iterations = std::stoi(parts[1]);
|
||
auto salt = hex_to_bytes(parts[2]);
|
||
auto expected_hash = hex_to_bytes(parts[3]);
|
||
|
||
unsigned char hash[HASH_LEN];
|
||
PKCS5_PBKDF2_HMAC(
|
||
password.c_str(), password.size(),
|
||
salt.data(), salt.size(),
|
||
iterations,
|
||
EVP_sha256(),
|
||
HASH_LEN, hash
|
||
);
|
||
|
||
// Constant-time comparison
|
||
if (expected_hash.size() != (size_t)HASH_LEN) return false;
|
||
unsigned char diff = 0;
|
||
for (int i = 0; i < HASH_LEN; i++) {
|
||
diff |= hash[i] ^ expected_hash[i];
|
||
}
|
||
return diff == 0;
|
||
}
|
||
|
||
private:
|
||
static std::string bytes_to_hex(const unsigned char* data, size_t len) {
|
||
static const char hex[] = "0123456789abcdef";
|
||
std::string result;
|
||
result.reserve(len * 2);
|
||
for (size_t i = 0; i < len; i++) {
|
||
result.push_back(hex[data[i] >> 4]);
|
||
result.push_back(hex[data[i] & 0x0F]);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
static std::vector<unsigned char> hex_to_bytes(const std::string& hex_str) {
|
||
std::vector<unsigned char> bytes;
|
||
bytes.reserve(hex_str.size() / 2);
|
||
for (size_t i = 0; i < hex_str.size(); i += 2) {
|
||
auto hi = hex_char_to_nibble(hex_str[i]);
|
||
auto lo = hex_char_to_nibble(hex_str[i + 1]);
|
||
bytes.push_back((hi << 4) | lo);
|
||
}
|
||
return bytes;
|
||
}
|
||
|
||
static unsigned char hex_char_to_nibble(char c) {
|
||
if (c >= '0' && c <= '9') return c - '0';
|
||
if (c >= 'a' && c <= 'f') return 10 + (c - 'a');
|
||
if (c >= 'A' && c <= 'F') return 10 + (c - 'A');
|
||
return 0;
|
||
}
|
||
};
|
||
|
||
//////////////////////////////////
|
||
// Password strength validator
|
||
//////////////////////////////////
|
||
class PasswordValidator {
|
||
public:
|
||
struct Result {
|
||
bool valid;
|
||
std::string message;
|
||
};
|
||
|
||
static Result validate(const std::string& password) {
|
||
if (password.size() < 8) {
|
||
return {false, "Password must be at least 8 characters"};
|
||
}
|
||
if (password.size() > 128) {
|
||
return {false, "Password too long (max 128)"};
|
||
}
|
||
|
||
bool has_upper = false, has_lower = false, has_digit = false, has_special = false;
|
||
for (char c : password) {
|
||
// std::isupper 等函数参数为 int，char 为有符号且非 ASCII 时是 UB
|
||
// 必须 static_cast<unsigned char> 后再传入（P1-2）
|
||
unsigned char uc = static_cast<unsigned char>(c);
|
||
if (std::isupper(uc)) has_upper = true;
|
||
else if (std::islower(uc)) has_lower = true;
|
||
else if (std::isdigit(uc)) has_digit = true;
|
||
else has_special = true;
|
||
}
|
||
|
||
int categories = has_upper + has_lower + has_digit + has_special;
|
||
if (categories < 3) {
|
||
return {false, "Password must contain at least 3 of: uppercase, lowercase, digit, special character"};
|
||
}
|
||
|
||
return {true, "OK"};
|
||
}
|
||
};
|
||
|
||
//////////////////////////////////
|
||
// IP Rate Limiter (in-memory)
|
||
//////////////////////////////////
|
||
#include <unordered_map>
|
||
#include <mutex>
|
||
#include <chrono>
|
||
|
||
class RateLimiter {
|
||
public:
|
||
struct AttemptInfo {
|
||
int count;
|
||
std::chrono::steady_clock::time_point first_attempt;
|
||
};
|
||
|
||
bool check_and_record(const std::string& ip, int max_attempts = 5, int window_seconds = 300) {
|
||
std::lock_guard<std::mutex> lock(mtx);
|
||
auto now = std::chrono::steady_clock::now();
|
||
|
||
auto& info = attempts[ip];
|
||
|
||
// Reset if window expired
|
||
auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(now - info.first_attempt).count();
|
||
if (elapsed > window_seconds) {
|
||
info.count = 0;
|
||
info.first_attempt = now;
|
||
}
|
||
|
||
info.count++;
|
||
|
||
// Cleanup old entries periodically
|
||
if (attempts.size() > 10000) {
|
||
for (auto it = attempts.begin(); it != attempts.end(); ) {
|
||
auto e = std::chrono::duration_cast<std::chrono::seconds>(now - it->second.first_attempt).count();
|
||
if (e > window_seconds) it = attempts.erase(it);
|
||
else ++it;
|
||
}
|
||
}
|
||
|
||
return info.count <= max_attempts;
|
||
}
|
||
|
||
private:
|
||
std::unordered_map<std::string, AttemptInfo> attempts;
|
||
std::mutex mtx;
|
||
};
|
||
|
||
//////////////////////////////////
|
||
/* -------- 数据库异常\数据库操作失败 -------- */
|
||
class DatabaseException: public ExceptionBase {
|
||
public:
|
||
using ExceptionBase::ExceptionBase;
|
||
|
||
std::string build_message() const override {
|
||
return "[Database]" + ExceptionBase::build_message();
|
||
}
|
||
};
|
||
|
||
/* http异常、非200 */
|
||
class HttpException: public ExceptionBase {
|
||
public:
|
||
HttpException(int code, const std::string& msg,
|
||
int http_status, const std::string& url,
|
||
const std::source_location& loc = std::source_location::current())
|
||
: ExceptionBase(code, msg, loc)
|
||
, m_http_status(http_status)
|
||
, m_url(url) {}
|
||
std::string build_message() const override {
|
||
return "[Http]" + ExceptionBase::build_message();
|
||
}
|
||
int status() const {
|
||
return m_http_status;
|
||
}
|
||
const std::string& url() const {
|
||
return m_url;
|
||
}
|
||
private:
|
||
int m_http_status;
|
||
std::string m_url;
|
||
};
|
||
|
||
|
||
//void db_init(); /* 初始化数据库 */
|
||
void registerRoutes(HttpServer &server);
|
||
std::string generate_captcha_text();
|
||
bool verify_captcha(const std::string& token, const std::string& answer);
|
||
|
||
/* http视图包装器，主要是将异常回显到浏览器 */
|
||
http::response<http::string_body> wrapperHttp(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params,
|
||
HttpRequestHandler _main);
|
||
|
||
|
||
/* http代理视图，额外接受一个method字符串 */
|
||
http::response<http::string_body> handleProxy(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params,
|
||
const char *method
|
||
);
|
||
|
||
/* */
|
||
http::response<http::string_body> handleLogin(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
http::response<http::string_body> handleRegister(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
/* 发送注册邮箱验证码：pymsg 调 smtp 服务 send_email 路由 */
|
||
http::response<http::string_body> handleSendEmailCode(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
http::response<http::string_body> handleCaptcha(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
http::response<http::string_body> handleLogout(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
/* 代理 captcha 图形验证码：pymsg 调 captcha 服务，返回 PNG 图片 */
|
||
http::response<http::string_body> handleCaptchaImage(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params);
|
||
|
||
/* 从 Cookie 头中解析指定名称的值（找不到返回空串） */
|
||
std::string get_cookie_value(const std::string& cookie_header, const std::string& name);
|
||
|
||
|
||
/* headers can't processed */
|
||
bool is_special_header(const std::string &header);
|
||
|
||
/* 请求路径安全性校验（防路径遍历/协议注入/空字节） */
|
||
bool is_safe_target(const std::string& target);
|
||
|
||
/* configure items */
|
||
static std::string _ADDR;
|
||
static int _PORT;
|
||
static bool _TLS = false;
|
||
static std::string _DEFT_URL;
|
||
static std::vector<std::string> _OPEN_URL;
|
||
static std::string _DB_PATH;
|
||
static int _TOKEN_KEEP_TIME = 3600; // Token 有效期（秒），可由 [Token] keep_time 配置
|
||
static std::vector<std::string> _CORS_ORIGINS; // CORS 允许的 Origin 白名单，可由 [CORS] allowed_origins 配置
|
||
|
||
/* instance items */
|
||
static std::unique_ptr<HttpServer> _SERVE;
|
||
static std::unique_ptr<MyRSA::Generator> _KEYGEN;
|
||
//static std::unique_ptr<Sqlite3> _SQLDB;
|
||
static RateLimiter _LOGIN_RATE;
|
||
static RateLimiter _REGISTER_RATE;
|
||
static RateLimiter _EMAIL_CODE_RATE; // 发送邮箱验证码限流
|
||
|
||
/* CAPTCHA store: token -> answer (in-memory, with expiry) */
|
||
#include <unordered_map>
|
||
#include <mutex>
|
||
struct CaptchaEntry {
|
||
std::string answer;
|
||
std::chrono::steady_clock::time_point created;
|
||
};
|
||
static std::unordered_map<std::string, CaptchaEntry> _CAPTCHA_STORE;
|
||
static std::mutex _CAPTCHA_MTX;
|
||
|
||
std::string generate_captcha_text() {
|
||
static const char chars[] = "ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz23456789";
|
||
// thread_local：每个线程独立 rng 实例，避免多线程并发调用 dist(rng) 时的数据竞争
|
||
// （static 变量初始化本身线程安全，但 mt19937::operator() 修改内部状态非线程安全）
|
||
thread_local std::mt19937 rng(std::random_device{}());
|
||
thread_local std::uniform_int_distribution<int> dist(0, sizeof(chars) - 2);
|
||
|
||
std::string text;
|
||
for (int i = 0; i < 5; i++) {
|
||
text += chars[dist(rng)];
|
||
}
|
||
return text;
|
||
}
|
||
|
||
bool verify_captcha(const std::string& token, const std::string& answer) {
|
||
std::lock_guard<std::mutex> lock(_CAPTCHA_MTX);
|
||
auto it = _CAPTCHA_STORE.find(token);
|
||
if (it == _CAPTCHA_STORE.end()) return false;
|
||
|
||
auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(
|
||
std::chrono::steady_clock::now() - it->second.created).count();
|
||
if (elapsed > 300) { // 5 min expiry
|
||
_CAPTCHA_STORE.erase(it);
|
||
return false;
|
||
}
|
||
|
||
bool match = (it->second.answer == answer);
|
||
_CAPTCHA_STORE.erase(it); // one-time use
|
||
return match;
|
||
}
|
||
|
||
/* 调用 captcha 服务（pymsg/TCP :8009）校验图形验证码。
|
||
* Token 一次性消费；服务不可用或响应异常一律视为校验失败（fail-closed）。
|
||
* 与内置 verify_captcha 并存：登录/注册可任选其一接入。 */
|
||
bool verify_captcha_remote(const std::string& token, const std::string& answer) {
|
||
try {
|
||
pmc::net::MsgClient client("127.0.0.1", 8009, "gateway");
|
||
json::value jv_req = {
|
||
{"_route", "verify"},
|
||
{"token", token},
|
||
{"answer", answer}
|
||
};
|
||
std::string resp = client.call(json::serialize(jv_req), 5.0);
|
||
auto jv = json::parse(resp);
|
||
auto& obj = jv.as_object();
|
||
if (!obj.at("success").as_bool()) return false;
|
||
return obj.at("data").as_object().at("valid").as_bool();
|
||
} catch (const std::exception&) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* 调用 smtp 服务（pymsg/TCP :8008）校验邮箱验证码。
|
||
* 验证码一次性消费；服务不可用或响应异常一律视为校验失败（fail-closed）。 */
|
||
bool verify_email_code_remote(const std::string& email, const std::string& code) {
|
||
try {
|
||
pmc::net::MsgClient client("127.0.0.1", 8008, "gateway");
|
||
json::value jv_req = {
|
||
{"_route", "verify_email"},
|
||
{"email", email},
|
||
{"code", code}
|
||
};
|
||
std::string resp = client.call(json::serialize(jv_req), 5.0);
|
||
auto jv = json::parse(resp);
|
||
auto& obj = jv.as_object();
|
||
if (!obj.at("success").as_bool()) return false;
|
||
return obj.at("data").as_object().at("valid").as_bool();
|
||
} catch (const std::exception&) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* -------- 信号处理回调函数 -------- */
|
||
void signalHandler(int signum) {
|
||
|
||
std::cout << "Receive close signal, prepare to shutdown...\n";
|
||
if (_SERVE) _SERVE->stop();
|
||
}
|
||
|
||
/* -------- 注册信号处理钩子 -------- */
|
||
void set_signal_action() {
|
||
struct sigaction sa;
|
||
sa.sa_handler = signalHandler;
|
||
sigemptyset(&sa.sa_mask);
|
||
sa.sa_flags = 0;
|
||
sigaction(SIGINT, &sa, nullptr);
|
||
sigaction(SIGTERM, &sa, nullptr);
|
||
}
|
||
|
||
/* -------- 入口 --------*/
|
||
int main(int argc, char **argv) {
|
||
|
||
/* 首先处理命令行参数 */
|
||
po::options_description desc("cpp language web gateway");
|
||
desc.add_options()
|
||
("help,h", "output help message")
|
||
("version,v", "output version message")
|
||
("input,i", po::value<std::string>(), "input a configure text file")
|
||
;
|
||
|
||
|
||
/* 执行解析（类似） */
|
||
po::variables_map vm;
|
||
{
|
||
try {
|
||
po::store(po::parse_command_line(argc, argv, desc), vm);
|
||
po::notify(vm);
|
||
}
|
||
|
||
catch (const std::exception &e) {
|
||
std::cerr << "ERROR: " << e.what() << std::endl;
|
||
std::cerr << "using --help to check options message" << std::endl;
|
||
throw e;
|
||
}
|
||
}
|
||
|
||
|
||
/* 分支：拉起帮助页面 */
|
||
if (vm.count("help")) {
|
||
std::cout << desc << std::endl;
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* 异常：没输入配置文件 */
|
||
if (!vm.count("input")) {
|
||
std::cerr << "Please input configure file via -i" << std::endl;
|
||
return 1;
|
||
}
|
||
|
||
{
|
||
try {
|
||
|
||
ConfIni cf(vm["input"].as<std::string>());
|
||
_ADDR = cf.get<std::string>("Server.address", "");
|
||
_PORT = cf.get<int> ("Server.port", -1);
|
||
_TLS = cf.get<bool> ("Server.tls", false);
|
||
_DEFT_URL = cf.get<std::string>("Proxy.default", "");
|
||
_OPEN_URL = split(cf.get<std::string>("Proxy.opened", ""), ';');
|
||
_DB_PATH = cf.get<std::string>("Database.path", "");
|
||
_TOKEN_KEEP_TIME = cf.get<int>("Token.keep_time", 3600);
|
||
_CORS_ORIGINS = split(cf.get<std::string>("CORS.allowed_origins", ""), ';');
|
||
}
|
||
|
||
|
||
/* 常规输出 */
|
||
catch (ConfIni::IniConfigureFileParseException &e) {
|
||
std::cerr << "ERROR: " << e.what() << std::endl;
|
||
std::cerr << "ini format input file error" << std::endl;
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
if (_ADDR == "" || _PORT == -1) {
|
||
std::cerr << "Please setup addree and port in Serve section in configure file";
|
||
std::cerr << std::endl;
|
||
return 0;
|
||
}
|
||
|
||
// 根据 Server.tls 选择 HTTPS（带证书）或 HTTP（无证书）构造函数
|
||
// HTTP 模式用于 WAF 终止 TLS 后的内部转发链路
|
||
if (_TLS) {
|
||
_SERVE = std::make_unique<HttpServer> (_ADDR, _PORT, "full_chain.crt", "server.key", 4);
|
||
} else {
|
||
_SERVE = std::make_unique<HttpServer> (_ADDR, _PORT, 4);
|
||
}
|
||
_KEYGEN = std::make_unique<MyRSA::Generator> ();
|
||
//_SQLDB = std::make_unique<Sqlite3> (_DB_PATH);
|
||
|
||
/* 迁移到了外部 */
|
||
//db_init();
|
||
|
||
/* */
|
||
registerRoutes(*_SERVE);
|
||
|
||
/* */
|
||
set_signal_action();
|
||
|
||
/* 获取资源 */
|
||
_SERVE->start();
|
||
|
||
|
||
std::cout << "Gateway " << _VER << " started" << std::endl;
|
||
|
||
/* 开始监听 */
|
||
_SERVE->run();
|
||
|
||
}
|
||
|
||
//void db_init() {
|
||
//
|
||
// std::string sql = "SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='Users'";
|
||
//
|
||
// auto flag = false;
|
||
// {
|
||
// auto stmt = _SQLDB->stmt(sql);
|
||
// if (stmt.step()) {
|
||
// auto num = stmt.read_int(0);
|
||
// if (num == 0) {
|
||
// flag = true;
|
||
// }
|
||
// }
|
||
// }
|
||
//
|
||
// if (flag) {
|
||
// std::cout << "Start database init..." << std::endl;
|
||
// std::string sql_crtt =
|
||
// "CREATE TABLE Users (\n"
|
||
// "id INTEGER PRIMARY KEY AUTOINCREMENT,\n"
|
||
// "email TEXT UNIQUE NOT NULL,\n"
|
||
// "password_hash TEXT NOT NULL,\n"
|
||
// "create_at DATETIME DEFAULT CURRENT_TIMESTAMP,\n"
|
||
// "last_login DATETIME,\n"
|
||
// "is_active BOOLEAN DEFAULT 1\n"
|
||
// ");\n\n"
|
||
// "CREATE INDEX idx_users_email ON users(email);\n";
|
||
//
|
||
// _SQLDB->exec(sql_crtt);
|
||
//
|
||
// // No hardcoded admin - first registered user becomes admin
|
||
// std::cout << "done (no default admin - register manually)" << std::endl;
|
||
// }
|
||
//
|
||
// else {
|
||
// std::cout << "The database already init" << std::endl;
|
||
// }
|
||
//}
|
||
|
||
|
||
/* 注册http路由 */
|
||
void registerRoutes(HttpServer &server) {
|
||
|
||
server.post("/captcha", [](const auto& req, const auto& params) {
|
||
return handleCaptcha(req, params);
|
||
});
|
||
|
||
/* const http::request<http::string_body>& req, const std::unordered_map<std::string, std::string>& params */
|
||
server.post("/login", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) {return handleLogin(req, params);});
|
||
});
|
||
|
||
server.post("/register", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) { return handleRegister(req, params); });
|
||
});
|
||
|
||
/* 发送注册邮箱验证码（须在 post("*") 通配符之前注册） */
|
||
server.post("/register/send_code", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) { return handleSendEmailCode(req, params); });
|
||
});
|
||
|
||
server.post("/logout", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) { return handleLogout(req, params); });
|
||
});
|
||
|
||
/* 代理 captcha 图形验证码（须在 get("*") 通配符之前注册） */
|
||
server.get("/captcha/image", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) { return handleCaptchaImage(req, params); });
|
||
});
|
||
|
||
server.get("*", [](const auto& req, const auto& params) -> http::response<http::string_body> {
|
||
return wrapperHttp(req, params,
|
||
[](const auto& req, const auto& params) { return handleProxy(req, params, "get"); });
|
||
});
|
||
|
||
server.post("*", [](const auto& req, const auto& params) {
|
||
return handleProxy(req, params, "post");
|
||
});
|
||
|
||
}
|
||
|
||
/* Http视图包装器
|
||
*
|
||
* 该函数收集视图函数抛出的异常 将信息发送给浏览器。这样视图函数有问题就可以直接抛出异常。 */
|
||
http::response<http::string_body> wrapperHttp(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params,
|
||
HttpRequestHandler _main)
|
||
|
||
try { return _main(req, params); }
|
||
|
||
|
||
/* 主动抛出的异常 */
|
||
catch (const HttpException& e) {
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
// 详细错误信息（e.what() 含源码路径/行号/C++ 模板类型）暂时以注释方式保留（同 handleLogin）
|
||
std::cerr << "[handleRegister HttpException] " << e.what() << std::endl;
|
||
json::value jv_r = {
|
||
{"success", false},
|
||
{"message", e.what()}
|
||
/* {"message", "Registration failed"} */
|
||
};
|
||
res.set(http::field::content_type, "application/json");
|
||
res.result(e.status());
|
||
res.body() = json::serialize(jv_r);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 预料之外的异常 */
|
||
catch (const std::exception& e) {
|
||
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
const auto& ti = typeid(e);
|
||
// 详细错误信息（ti.name() 含 mangled 类型名、e.what() 含内部细节）暂时以注释方式保留
|
||
// 原因：此处为 wrapperHttp 外层 catch，会捕获 handler 内未处理的 std::exception
|
||
// 透传到客户端会泄露 C++ 类型信息与内部路径（P0-3 遗漏点，已补全）
|
||
// 排障：完整信息仍输出到服务端 stderr
|
||
std::cerr << "[wrapperHttp std::exception] <" << ti.name() << "> " << e.what() << std::endl;
|
||
json::value jv_r = {
|
||
{"success", false},
|
||
/* {"message", std::string("<") + ti.name() + "> " + e.what()}, */ // 泄露源码信息，已禁用
|
||
{"message", "Internal Server Error"}
|
||
};
|
||
res.set(http::field::content_type, "application/json");
|
||
res.result(http::status::internal_server_error);
|
||
res.body() = json::serialize(jv_r);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
// CAPTCHA endpoint: generates a random text, stores it, returns a simple token
|
||
// by shuiyu
|
||
http::response<http::string_body> handleCaptcha(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
std::string text = generate_captcha_text();
|
||
|
||
// Generate a token for this captcha
|
||
unsigned char token_bytes[16];
|
||
RAND_bytes(token_bytes, 16);
|
||
std::string token;
|
||
static const char hex[] = "0123456789abcdef";
|
||
for (int i = 0; i < 16; i++) {
|
||
token += hex[token_bytes[i] >> 4];
|
||
token += hex[token_bytes[i] & 0x0F];
|
||
}
|
||
|
||
{
|
||
std::lock_guard<std::mutex> lock(_CAPTCHA_MTX);
|
||
_CAPTCHA_STORE[token] = {text, std::chrono::steady_clock::now()};
|
||
}
|
||
|
||
json::value jv = {
|
||
{"token", token},
|
||
{"text", text}
|
||
};
|
||
|
||
res.set(http::field::content_type, "application/json");
|
||
res.result(http::status::ok);
|
||
res.body() = json::serialize(jv);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 处理登陆
|
||
*
|
||
* /login */
|
||
http::response<http::string_body> handleLogin(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
// IP rate limit check
|
||
std::string client_ip = "";
|
||
auto it_host = req.base().find("X-Forwarded-For");
|
||
if (it_host != req.base().end())
|
||
client_ip = std::string(it_host->value());
|
||
else
|
||
client_ip = "direct";
|
||
|
||
if (!_LOGIN_RATE.check_and_record(client_ip, 5, 300))
|
||
THROW_EX_CUSTOM(HttpException, 2001, "Too many login attampts. Please try again later.", 400, "/login");
|
||
|
||
// parse json req body
|
||
json::value jv;
|
||
try { jv = json::parse(req.body()); }
|
||
catch (const boost::wrapexcept<boost::system::system_error>& e) {
|
||
THROW_EX_CUSTOM(HttpException, 2001, "Invalid_json_Argument", 400, "/login");
|
||
}
|
||
|
||
if (!jv.is_object()) THROW_EX_CUSTOM(HttpException, 2002, "Invalid_json_object_Argument", 400, "/login");
|
||
auto& obj = jv.as_object();
|
||
auto username = std::string(obj.at("username").as_string());
|
||
auto password = std::string(obj.at("password").as_string());
|
||
|
||
// CAPTCHA verification 验证码（对接 captcha pymsg 服务，图形码 Token 一次性消费）
|
||
auto captcha_it = obj.find("captcha_token");
|
||
auto captcha_ans_it = obj.find("captcha_answer");
|
||
if (captcha_it == obj.end() || captcha_ans_it == obj.end())
|
||
THROW_EX_CUSTOM(HttpException, 2002, "Bad_Request", 400, "/login");
|
||
std::string ct = std::string(captcha_it->value().as_string());
|
||
std::string ca = std::string(captcha_ans_it->value().as_string());
|
||
if (!verify_captcha_remote(ct, ca)) THROW_EX_CUSTOM(HttpException, 2201, "Invalid CAPTCHA", 400, "/login");
|
||
|
||
std::string stored_hash = "";
|
||
{
|
||
// Fetch stored hash - support both PBKDF2 and legacy SHA256
|
||
//std::string sql = "SELECT password_hash FROM Users WHERE email=?;";
|
||
//auto stmt = _SQLDB->stmt(sql);
|
||
//stmt.bind_text(1, username);
|
||
//if (stmt.step()) {
|
||
// stored_hash = std::string(reinterpret_cast<const char*>(stmt.read_text(0)));
|
||
//}
|
||
|
||
// 新版调用db模块（通过 MsgClient pymsg TCP 协议）
|
||
// 【保留】旧版 HTTP 调用方式：
|
||
// auto jv_db_r = DbC::call_http(jv_select);
|
||
json::value jv_select = {
|
||
{"action", "select"},
|
||
{"table", "Users"},
|
||
{"where", json::object{
|
||
{"username", username},
|
||
}}
|
||
};
|
||
auto jv_db_r = DbC::call_msg(jv_select);
|
||
auto obj_r = jv_db_r.as_object();
|
||
auto success = obj_r["success"].as_bool();
|
||
if (!success) THROW_EX_CUSTOM(HttpException, 2102, "Login (Update Step) Failed", 500, "/login");
|
||
auto obj_rd = obj_r.at("data").as_array();
|
||
auto obj_ru = obj_rd.at(0).as_object();
|
||
stored_hash = obj_ru.at("password_hash").as_string();
|
||
}
|
||
|
||
|
||
|
||
bool auth_ok = false;
|
||
if (!stored_hash.empty()) {
|
||
if (stored_hash.substr(0, 7) == "pbkdf2:")
|
||
// New PBKDF2 hash
|
||
auth_ok = PBKDF2Hasher::verify_password(password, stored_hash);
|
||
//else {
|
||
// Legacy SHA256 hash - verify then auto-migrate
|
||
//auto legacy_hash = SHA256::sha256(password);
|
||
//if (legacy_hash == stored_hash) {
|
||
// auth_ok = true;
|
||
// Auto-migrate to PBKDF2
|
||
// auto new_hash = PBKDF2Hasher::hash_password(password);
|
||
// std::string sql_migrate = "UPDATE Users SET password_hash=? WHERE email=?;";
|
||
// auto stmt_mig = _SQLDB->stmt(sql_migrate);
|
||
// stmt_mig.bind_text(1, new_hash);
|
||
// stmt_mig.bind_text(2, username);
|
||
// stmt_mig.step();
|
||
// std::cout << "Migrated password hash for " << username << " to PBKDF2" << std::endl;
|
||
//}
|
||
}
|
||
|
||
if (!auth_ok) THROW_EX_CUSTOM(HttpException, 2101, "Invalid Username or Password", 401, "/login");
|
||
|
||
// Update last_login
|
||
//std::string sql_update = "UPDATE Users SET last_login=datetime('now','localtime') WHERE email=?;";
|
||
//auto stmt_upd = _SQLDB->stmt(sql_update);
|
||
//stmt_upd.bind_text(1, username);
|
||
//stmt_upd.step();
|
||
//
|
||
// 新版调用db模块：values 中的 "$now" 哨兵由 db 日期适配层替换为服务端当前 UTC 时间
|
||
//（此前因 db 无法处理日期列而注释，dbv2 增加 _coerce_value 后可用）。
|
||
json::value jv_upd = {
|
||
{"action", "update"},
|
||
{"table", "Users"},
|
||
{"values", json::object{
|
||
{"last_login", "$now"},
|
||
}},
|
||
{"where", json::object{
|
||
{"username", username},
|
||
}}
|
||
};
|
||
auto jv_upd_r = DbC::call_msg(jv_upd);
|
||
if (!jv_upd_r.as_object()["success"].as_bool())
|
||
THROW_EX_CUSTOM(HttpException, 2102, "Login (Update Step) Failed", 500, "/login");
|
||
|
||
|
||
/* 生成令牌 */
|
||
auto _PRIV = MyRSA::Private_Key::from_pem(_KEYGEN->get_private_key_pem());
|
||
|
||
json::value jv_t = {
|
||
{"user", username},
|
||
{"created_at", LocalTime::getCurrent()},
|
||
{"keep_time", _TOKEN_KEEP_TIME}
|
||
};
|
||
std::string data = json::serialize(jv_t);
|
||
std::string auth = Base64::base64_encode(data);
|
||
std::string sign = _PRIV.Sign(data);
|
||
std::string token = auth + "_" + sign;
|
||
|
||
|
||
/* 生成返回json TODO: 专门写个类做这事 */
|
||
json::value jv_rr = {
|
||
{"success", true},
|
||
{"data", json::object{{
|
||
"token", token}}
|
||
}
|
||
};
|
||
res.set("Connection", "close");
|
||
|
||
/* 签发 HttpOnly Cookie（防 XSS 窃取 Token；JS 不再经手 Token） */
|
||
{
|
||
std::string ck = "q4_token=" + token +
|
||
"; Path=/; HttpOnly; Secure; SameSite=Lax; Max-Age=" +
|
||
std::to_string(_TOKEN_KEEP_TIME);
|
||
res.set("Set-Cookie", ck);
|
||
}
|
||
|
||
res.result(http::status::ok);
|
||
res.body() = json::serialize(jv_rr);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 退出登录 /logout：清除 q4_token Cookie */
|
||
http::response<http::string_body> handleLogout(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
res.set("Set-Cookie",
|
||
"q4_token=; Path=/; HttpOnly; Secure; SameSite=Lax; Max-Age=0");
|
||
res.set("Connection", "close");
|
||
res.result(http::status::ok);
|
||
res.body() = R"({"success": true, "message": "logged out"})";
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 代理 captcha 图形验证码：GET /captcha/image
|
||
*
|
||
* captcha 服务为 pymsg/TCP（:8009），浏览器无法直接访问，
|
||
* 由本路由做 HTTP → pymsg 转换：调 image 路由拿到 base64 PNG 与 token，
|
||
* 解码后以 image/png + X-Captcha-Token 响应头返回（与旧直出接口契约一致）。
|
||
*/
|
||
http::response<http::string_body> handleCaptchaImage(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
/* 调 captcha 服务（pymsg/TCP），连接失败/超时视为 502 */
|
||
pmc::net::MsgClient client("127.0.0.1", 8009, "gateway");
|
||
std::string resp;
|
||
try {
|
||
resp = client.call(R"({"_route":"image"})", 5.0);
|
||
} catch (const std::exception& e) {
|
||
THROW_EX_CUSTOM(HttpException, 2400, "Captcha service unavailable", 502, "/captcha/image");
|
||
}
|
||
|
||
/* 解析响应（格式错误同样视为 502） */
|
||
std::string token;
|
||
std::string png;
|
||
try {
|
||
auto jv = json::parse(resp);
|
||
auto& obj = jv.as_object();
|
||
if (!obj.at("success").as_bool())
|
||
THROW_EX_CUSTOM(HttpException, 2401, "Captcha service error", 502, "/captcha/image");
|
||
auto& data = obj.at("data").as_object();
|
||
token = json::value_to<std::string>(data.at("token"));
|
||
auto image_b64 = json::value_to<std::string>(data.at("image"));
|
||
png = Base64::base64_decode_to_string(image_b64);
|
||
} catch (const HttpException&) {
|
||
throw;
|
||
} catch (const std::exception& e) {
|
||
THROW_EX_CUSTOM(HttpException, 2402, "Bad captcha response", 502, "/captcha/image");
|
||
}
|
||
|
||
res.set(http::field::content_type, "image/png");
|
||
res.set("X-Captcha-Token", token);
|
||
res.set("Cache-Control", "no-store"); /* 验证码图片禁止缓存 */
|
||
res.set("Connection", "close");
|
||
res.result(http::status::ok);
|
||
res.body() = std::move(png);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 处理注册 /register */
|
||
http::response<http::string_body> handleRegister(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
// IP rate limit check
|
||
std::string client_ip = "direct";
|
||
auto it_host = req.base().find("X-Forwarded-For");
|
||
if (it_host != req.base().end())
|
||
client_ip = std::string(it_host->value());
|
||
if (!_REGISTER_RATE.check_and_record(client_ip, 3, 600))
|
||
THROW_EX_CUSTOM(HttpException, 3001, "Too many registration attempts. Please try again later.",
|
||
403, "/register");
|
||
|
||
// parse the req body
|
||
json::value jv;
|
||
try { jv = json::parse(req.body()); }
|
||
catch (const boost::wrapexcept<boost::system::system_error>& e) {
|
||
THROW_EX_CUSTOM(HttpException, 3002, "Invalid Argument", 401, "/register");
|
||
}
|
||
|
||
if (!jv.is_object())
|
||
THROW_EX_CUSTOM(HttpException, 3002, "Invalid Argument", 401, "/register");
|
||
|
||
auto& obj = jv.as_object();
|
||
auto username = std::string(obj.at("username").as_string());
|
||
auto password = std::string(obj.at("password").as_string());
|
||
|
||
// Strong password check
|
||
auto pw_result = PasswordValidator::validate(password);
|
||
if (!pw_result.valid)
|
||
THROW_EX_CUSTOM(HttpException, 3003, pw_result.message, 401, "/register");
|
||
|
||
// Email format check
|
||
std::regex email_regex(R"(^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$)");
|
||
if (!std::regex_match(username, email_regex))
|
||
THROW_EX_CUSTOM(HttpException, 3004, "Invalid email format", 400, "/register");
|
||
|
||
// CAPTCHA verification
|
||
auto captcha_it = obj.find("captcha_token");
|
||
auto captcha_ans_it = obj.find("captcha_answer");
|
||
if (captcha_it != obj.end() && captcha_ans_it != obj.end()) {
|
||
std::string ct = std::string(captcha_it->value().as_string());
|
||
std::string ca = std::string(captcha_ans_it->value().as_string());
|
||
if (!verify_captcha(ct, ca))
|
||
THROW_EX_CUSTOM(HttpException, 2201, "Invalid CAPTCHA", 400, "/register");
|
||
}
|
||
|
||
// 邮箱验证码校验（smtp 服务，一次性消费；须放在所有本地校验通过之后、写库之前）
|
||
auto ecode_it = obj.find("email_code");
|
||
if (ecode_it == obj.end())
|
||
THROW_EX_CUSTOM(HttpException, 3005, "Email verification code required", 400, "/register");
|
||
std::string email_code = std::string(ecode_it->value().as_string());
|
||
if (!verify_email_code_remote(username, email_code))
|
||
THROW_EX_CUSTOM(HttpException, 3006, "Invalid or expired email verification code", 400, "/register");
|
||
|
||
// generate the hash of password
|
||
auto password_hash = PBKDF2Hasher::hash_password(password);
|
||
|
||
//std::string sql = "INSERT INTO Users (email, password_hash, last_login) VALUES (?, ?, datetime('now', 'localtime'));";
|
||
//auto stmt = _SQLDB->stmt(sql);
|
||
//stmt.bind_text(1, username);
|
||
//stmt.bind_text(2, password_hash);
|
||
//stmt.step();
|
||
//
|
||
// 新版调用db模块（通过 MsgClient pymsg TCP 协议）
|
||
// 【保留】旧版 HTTP 调用方式：
|
||
// auto jv_result = DbC::call_http(jv_insert);
|
||
json::value jv_insert = {
|
||
{"action", "insert"},
|
||
{"table", "Users"},
|
||
{"values", json::object{
|
||
{"username", username},
|
||
{"password_hash", password_hash}
|
||
}}
|
||
};
|
||
auto jv_result = DbC::call_msg(jv_insert);
|
||
auto obj_r = jv_result.as_object();
|
||
auto success = obj_r["success"].as_bool();
|
||
if (!success) THROW_EX_CUSTOM(HttpException, 2202, "Registe Failed", 400, "/register");
|
||
auto jv_r = json::value{{"success", success}};
|
||
|
||
res.result(http::status::ok);
|
||
res.body() = json::serialize(jv_r);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
/* 处理发送注册邮箱验证码 /register/send_code
|
||
*
|
||
* 经 pymsg 调 smtp 服务 send_email 路由，向目标邮箱发送 6 位验证码。
|
||
* 限流 5 次/10 分钟/IP；smtp 不可用返回 502（fail-closed）。 */
|
||
http::response<http::string_body> handleSendEmailCode(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
// IP rate limit check
|
||
std::string client_ip = "direct";
|
||
auto it_host = req.base().find("X-Forwarded-For");
|
||
if (it_host != req.base().end())
|
||
client_ip = std::string(it_host->value());
|
||
if (!_EMAIL_CODE_RATE.check_and_record(client_ip, 5, 600))
|
||
THROW_EX_CUSTOM(HttpException, 3101, "Too many code requests. Please try again later.",
|
||
403, "/register/send_code");
|
||
|
||
// parse the req body
|
||
json::value jv;
|
||
try { jv = json::parse(req.body()); }
|
||
catch (const std::exception&) {
|
||
THROW_EX_CUSTOM(HttpException, 3002, "Invalid Argument", 401, "/register/send_code");
|
||
}
|
||
|
||
if (!jv.is_object())
|
||
THROW_EX_CUSTOM(HttpException, 3002, "Invalid Argument", 401, "/register/send_code");
|
||
|
||
auto& obj = jv.as_object();
|
||
auto email_it = obj.find("email");
|
||
if (email_it == obj.end())
|
||
THROW_EX_CUSTOM(HttpException, 3002, "Invalid Argument", 401, "/register/send_code");
|
||
auto email = std::string(email_it->value().as_string());
|
||
|
||
// Email format check
|
||
std::regex email_regex(R"(^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$)");
|
||
if (!std::regex_match(email, email_regex))
|
||
THROW_EX_CUSTOM(HttpException, 3004, "Invalid email format", 400, "/register/send_code");
|
||
|
||
// 调 smtp 服务（pymsg/TCP :8008）发送验证码
|
||
bool sent = false;
|
||
try {
|
||
pmc::net::MsgClient client("127.0.0.1", 8008, "gateway");
|
||
json::value jv_req = {
|
||
{"_route", "send_email"},
|
||
{"email", email}
|
||
};
|
||
std::string resp = client.call(json::serialize(jv_req), 20.0);
|
||
auto jv_r = json::parse(resp);
|
||
auto& obj_r = jv_r.as_object();
|
||
if (obj_r.at("success").as_bool())
|
||
sent = obj_r.at("data").as_object().at("sent").as_bool();
|
||
} catch (const std::exception&) {
|
||
THROW_EX_CUSTOM(HttpException, 3102, "Mail service unavailable", 502, "/register/send_code");
|
||
}
|
||
|
||
if (!sent)
|
||
THROW_EX_CUSTOM(HttpException, 3103, "Failed to send verification code", 500, "/register/send_code");
|
||
|
||
auto jv_r = json::value{{"success", true}};
|
||
res.result(http::status::ok);
|
||
res.set(http::field::content_type, "application/json");
|
||
res.body() = json::serialize(jv_r);
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
http::response<http::string_body> handleProxy(
|
||
const http::request<http::string_body>& req,
|
||
const std::unordered_map<std::string, std::string>& params,
|
||
const char *method)
|
||
{
|
||
http::response<http::string_body> res;
|
||
res.version(req.version());
|
||
|
||
auto _PUBL = MyRSA::Public_Key::from_pem(_KEYGEN->get_public_key_pem());
|
||
|
||
std::string t_url = "";
|
||
std::string url = "";
|
||
std::string auth = "";
|
||
std::string cookie_token = ""; /* 从 Cookie 提取的 Token（用于向下游注入 Authorization） */
|
||
json::value jv_t;
|
||
{
|
||
auto flag = false;
|
||
|
||
|
||
|
||
/* 大写的Target-Url */
|
||
auto it = req.base().find("Target-Url");
|
||
if (it != req.base().end()) {
|
||
t_url = req["Target-Url"];
|
||
}
|
||
|
||
/* 小写的Target-Url */
|
||
it = req.base().find("target-url");
|
||
if (it != req.base().end()) {
|
||
t_url = req["target-url"];
|
||
}
|
||
|
||
/* 如果请求没设置Target-Url头，就自动设置为默认的 */
|
||
if (t_url == "") {
|
||
t_url = _DEFT_URL;
|
||
flag = true;
|
||
}
|
||
|
||
// 路径规范化校验（P1-1）：防止路径遍历、协议注入、空字节等
|
||
// 校验在 url 拼接前完成，避免恶意 target 污染下游请求
|
||
std::string target_path = std::string(req.target());
|
||
if (!is_safe_target(target_path))
|
||
THROW_EX_CUSTOM(HttpException, 2300, "Invalid request path", 400, "*");
|
||
|
||
url = t_url;
|
||
url += "/";
|
||
url += target_path;
|
||
|
||
std::string raw = "";
|
||
it = req.base().find("Authorization");
|
||
if (it != req.base().end()) {
|
||
raw = std::string(it->value());
|
||
} else {
|
||
/* 回退：从 HttpOnly Cookie 读取 q4_token（浏览器同源请求自动携带） */
|
||
auto cit = req.base().find("Cookie");
|
||
if (cit != req.base().end()) {
|
||
cookie_token = get_cookie_value(std::string(cit->value()), "q4_token");
|
||
if (!cookie_token.empty())
|
||
raw = "Bearer " + cookie_token;
|
||
}
|
||
}
|
||
if (raw.empty() && !flag)
|
||
THROW_EX_CUSTOM(HttpException, 2301, "Unauthorization", 401, "*");
|
||
|
||
if (!flag) {
|
||
/* 仅在需要鉴权的目标上校验凭证。
|
||
* 默认目标（公开静态资源）必须跳过校验：
|
||
* 浏览器会给每个请求自动携带 q4_token Cookie，
|
||
* gateway 重启（内存 RSA 密钥对轮换）或 Token 过期后，
|
||
* 旧 Cookie 验签失败会让公开页面也误返回 401 */
|
||
if (raw.substr(0, 7) == "Bearer ") {
|
||
raw = raw.substr(7, raw.size() - 7);
|
||
size_t idx = raw.find("_");
|
||
if (idx == std::string::npos)
|
||
THROW_EX_CUSTOM(HttpException, 2301, "Unauthorization", 400, "*");
|
||
std::string data = raw.substr(0, idx);
|
||
std::string sign = raw.substr(idx+1, raw.size()-idx-1);
|
||
auth = Base64::base64_decode_to_string(data);
|
||
if (!_PUBL.Verify(auth, sign))
|
||
THROW_EX_CUSTOM(HttpException, 2301, "Unauthorization", 401, "*");
|
||
}
|
||
|
||
/* 是否过期 */
|
||
try { jv_t = json::parse(auth); }
|
||
catch (const boost::wrapexcept<boost::system::system_error>& e) {
|
||
THROW_EX_CUSTOM(HttpException, 2302, "Bad token", 400, "*");
|
||
}
|
||
if (!jv_t.is_object()) THROW_EX_CUSTOM(HttpException, 2302, "Bad token", 400, "*");
|
||
json::object& obj = jv_t.as_object();
|
||
|
||
auto t = json::value_to<std::string>(obj["created_at"]);
|
||
auto keep_time_val = json::value_to<int>(obj["keep_time"]);
|
||
auto created_tp = LocalTime::parse(t);
|
||
if (created_tp) {
|
||
auto now = std::chrono::system_clock::now();
|
||
auto expire_tp = *created_tp + std::chrono::seconds(keep_time_val);
|
||
if (now > expire_tp) THROW_EX_CUSTOM(HttpException, 2000, "Authorization Expired", 401, "*");
|
||
}
|
||
} else {
|
||
/* 公开目标不做凭证校验，也不向下游注入 Authorization */
|
||
cookie_token = "";
|
||
}
|
||
}
|
||
|
||
/* 扫描开放url，匹配转发地址 */
|
||
{
|
||
bool flag = false;
|
||
for (auto& s: _OPEN_URL) {
|
||
if (s == t_url) {
|
||
flag = true;
|
||
break;
|
||
}
|
||
}
|
||
if (!flag) {
|
||
throw std::runtime_error("403");
|
||
}
|
||
}
|
||
|
||
/*
|
||
* 这是用于读数据的HTTP客户端回调函数
|
||
*
|
||
* FIXME: 增加长度限制
|
||
* FIXME: 试试流式输出
|
||
* */
|
||
auto callback = [&res](const auto& ret) {
|
||
res.body() += ret;
|
||
};
|
||
|
||
/* 复制(几乎)所有的请求头 */
|
||
auto client = HttpClient();
|
||
for (auto const& field: req) {
|
||
|
||
if (is_special_header(field.name_string())) continue;
|
||
auto h = std::string();
|
||
h += field.name_string();
|
||
h += ": ";
|
||
h += field.value();
|
||
client.set_header(h);
|
||
}
|
||
|
||
// 主动设置可信的 X-Forwarded-For（P1-1）
|
||
// 说明：is_special_header 已剥离客户端可能伪造的 XFF/X-Real-IP/Forwarded
|
||
// WAF → Gateway 为可信内网链路，收到的 XFF 即客户端真实 IP
|
||
// 下游服务应信任此值做限流/审计，不再被客户端伪造
|
||
auto xff_it = req.base().find("X-Forwarded-For");
|
||
if (xff_it != req.base().end()) {
|
||
client.set_header(std::string("X-Forwarded-For: ") + std::string(xff_it->value()));
|
||
} else {
|
||
// WAF 未传 XFF 时，标记为 unknown，避免下游拿到空值
|
||
client.set_header("X-Forwarded-For: unknown");
|
||
}
|
||
|
||
/* Token 来自 Cookie 时，向下游补齐 Authorization 头（dnfs 等下游仍按 Bearer 解析，无需改动） */
|
||
if (!cookie_token.empty()) {
|
||
client.set_header("Authorization: Bearer " + cookie_token);
|
||
}
|
||
|
||
/* 转发请求 */
|
||
if (method == "get")
|
||
client.get_stream_sync(url, callback);
|
||
|
||
else if (method == "post") {
|
||
std::string payload = req.body();
|
||
client.post_stream_sync(url, payload, callback);
|
||
}
|
||
|
||
/* 复制所有的响应头 */
|
||
for (const auto& pair: client.get_response_headers() )
|
||
res.set(pair.first, pair.second);
|
||
|
||
|
||
res.set("Connection", "close");
|
||
res.result(client.get_response_code());
|
||
|
||
res.prepare_payload();
|
||
return res;
|
||
}
|
||
|
||
bool is_special_header(const std::string &header) {
|
||
|
||
// 原过滤：传输层/编码相关，由 HttpClient 自行处理
|
||
// 新增过滤（P1-1）：客户端可伪造的 IP 相关头
|
||
// - X-Forwarded-For / X-Real-IP / Forwarded
|
||
// 剥离后由 gateway 主动设置可信值（见 handleProxy 转发逻辑）
|
||
// 防止客户端伪造 IP 绕过下游限流/审计
|
||
return header == "Host" || header == "connection"
|
||
|| header == "Accept-Encoding"
|
||
|| header == "X-Forwarded-For"
|
||
|| header == "X-Real-IP"
|
||
|| header == "Forwarded";
|
||
}
|
||
|
||
std::string get_cookie_value(const std::string& cookie_header, const std::string& name) {
|
||
// Cookie 头格式："k1=v1; k2=v2; q4_token=xxx"
|
||
size_t pos = 0;
|
||
while (pos <= cookie_header.size()) {
|
||
size_t end = cookie_header.find(';', pos);
|
||
if (end == std::string::npos) end = cookie_header.size();
|
||
std::string pair = cookie_header.substr(pos, end - pos);
|
||
size_t eq = pair.find('=');
|
||
if (eq != std::string::npos) {
|
||
std::string k = pair.substr(0, eq);
|
||
size_t b = k.find_first_not_of(" \t");
|
||
size_t e = k.find_last_not_of(" \t");
|
||
if (b != std::string::npos) k = k.substr(b, e - b + 1);
|
||
if (k == name) return pair.substr(eq + 1);
|
||
}
|
||
if (end == cookie_header.size()) break;
|
||
pos = end + 1;
|
||
}
|
||
return "";
|
||
}
|
||
|
||
bool is_safe_target(const std::string& target) {
|
||
// 请求路径安全性校验（P1-1）
|
||
// 防御目标：路径遍历、协议注入、空字节、非绝对路径形式
|
||
|
||
if (target.empty()) return false;
|
||
|
||
// 必须以 '/' 开头（拒绝 "http://evil.com/..." 等绝对 URI 形式）
|
||
if (target[0] != '/') return false;
|
||
|
||
// 拒绝空字节（防止截断绕过）
|
||
if (target.find('\0') != std::string::npos) return false;
|
||
|
||
// 拒绝路径遍历：明文 ".."
|
||
if (target.find("..") != std::string::npos) return false;
|
||
|
||
// 拒绝路径遍历：URL 编码形式（%2e / %2E，含 %2f / %5c 的编码变体）
|
||
std::string lower_target;
|
||
lower_target.reserve(target.size());
|
||
for (char c : target) {
|
||
lower_target.push_back(static_cast<char>(std::tolower(static_cast<unsigned char>(c))));
|
||
}
|
||
if (lower_target.find("%2e") != std::string::npos) return false;
|
||
if (lower_target.find("%2f") != std::string::npos) return false;
|
||
if (lower_target.find("%5c") != std::string::npos) return false;
|
||
|
||
return true;
|
||
}
|