qswiki/gateway/httplib.h

2351 regels
58 KiB
C

2018-11-03 17:12:20 +01:00
//
// httplib.h
//
// Copyright (c) 2019 Yuji Hirose. All rights reserved.
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// MIT License
//
#ifndef CPPHTTPLIB_HTTPLIB_H
#define CPPHTTPLIB_HTTPLIB_H
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#ifdef _WIN32
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif //_CRT_SECURE_NO_WARNINGS
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#ifndef _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_NONSTDC_NO_DEPRECATE
#endif //_CRT_NONSTDC_NO_DEPRECATE
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#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf_s
#endif // _MSC_VER
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#ifndef S_ISREG
#define S_ISREG(m) (((m)&S_IFREG) == S_IFREG)
#endif // S_ISREG
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#ifndef S_ISDIR
#define S_ISDIR(m) (((m)&S_IFDIR) == S_IFDIR)
#endif // S_ISDIR
#ifndef NOMINMAX
#define NOMINMAX
#endif // NOMINMAX
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#include <io.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#pragma comment(lib, "ws2_32.lib")
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#ifndef strcasecmp
#define strcasecmp _stricmp
#endif // strcasecmp
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typedef SOCKET socket_t;
#else
#include <arpa/inet.h>
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#include <cstring>
#include <netdb.h>
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#include <netinet/in.h>
#include <pthread.h>
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#include <signal.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <unistd.h>
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typedef int socket_t;
#define INVALID_SOCKET (-1)
#endif //_WIN32
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#include <assert.h>
#include <fcntl.h>
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#include <fstream>
#include <functional>
#include <map>
#include <memory>
#include <mutex>
#include <boost/regex.hpp>
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#include <string>
#include <sys/stat.h>
#include <thread>
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#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
#include <openssl/err.h>
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#include <openssl/ssl.h>
#endif
#ifdef CPPHTTPLIB_ZLIB_SUPPORT
#include <zlib.h>
#endif
/*
* Configuration
*/
#define CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND 5
#define CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND 0
#define CPPHTTPLIB_KEEPALIVE_MAX_COUNT 5
#define CPPHTTPLIB_REQUEST_URI_MAX_LENGTH 8192
#define CPPHTTPLIB_PAYLOAD_MAX_LENGTH std::numeric_limits<uint64_t>::max()
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namespace httplib {
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namespace detail {
struct ci {
bool operator()(const std::string &s1, const std::string &s2) const {
return std::lexicographical_compare(
s1.begin(), s1.end(), s2.begin(), s2.end(),
[](char c1, char c2) { return ::tolower(c1) < ::tolower(c2); });
}
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};
} // namespace detail
enum class HttpVersion { v1_0 = 0, v1_1 };
typedef std::multimap<std::string, std::string, detail::ci> Headers;
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template <typename uint64_t, typename... Args>
std::pair<std::string, std::string> make_range_header(uint64_t value,
Args... args);
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typedef std::multimap<std::string, std::string> Params;
typedef boost::smatch Match;
typedef std::function<bool(uint64_t current, uint64_t total)> Progress;
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struct MultipartFile {
std::string filename;
std::string content_type;
size_t offset = 0;
size_t length = 0;
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};
typedef std::multimap<std::string, MultipartFile> MultipartFiles;
struct Request {
std::string version;
std::string method;
std::string target;
std::string path;
Headers headers;
std::string body;
Params params;
MultipartFiles files;
Match matches;
Progress progress;
bool has_header(const char *key) const;
std::string get_header_value(const char *key, size_t id = 0) const;
size_t get_header_value_count(const char *key) const;
void set_header(const char *key, const char *val);
bool has_param(const char *key) const;
std::string get_param_value(const char *key, size_t id = 0) const;
size_t get_param_value_count(const char *key) const;
bool has_file(const char *key) const;
MultipartFile get_file_value(const char *key) const;
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};
struct Response {
std::string version;
int status;
Headers headers;
std::string body;
std::function<std::string(uint64_t offset)> streamcb;
bool has_header(const char *key) const;
std::string get_header_value(const char *key, size_t id = 0) const;
size_t get_header_value_count(const char *key) const;
void set_header(const char *key, const char *val);
void set_redirect(const char *uri);
void set_content(const char *s, size_t n, const char *content_type);
void set_content(const std::string &s, const char *content_type);
Response() : status(-1) {}
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};
class Stream {
public:
virtual ~Stream() {}
virtual int read(char *ptr, size_t size) = 0;
virtual int write(const char *ptr, size_t size1) = 0;
virtual int write(const char *ptr) = 0;
virtual std::string get_remote_addr() const = 0;
template <typename... Args>
void write_format(const char *fmt, const Args &... args);
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};
class SocketStream : public Stream {
public:
SocketStream(socket_t sock);
virtual ~SocketStream();
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virtual int read(char *ptr, size_t size);
virtual int write(const char *ptr, size_t size);
virtual int write(const char *ptr);
virtual std::string get_remote_addr() const;
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private:
socket_t sock_;
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};
class BufferStream : public Stream {
public:
BufferStream() {}
virtual ~BufferStream() {}
virtual int read(char *ptr, size_t size);
virtual int write(const char *ptr, size_t size);
virtual int write(const char *ptr);
virtual std::string get_remote_addr() const;
const std::string &get_buffer() const;
private:
std::string buffer;
};
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class Server {
public:
typedef std::function<void(const Request &, Response &)> Handler;
typedef std::function<void(const Request &, const Response &)> Logger;
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Server();
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virtual ~Server();
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virtual bool is_valid() const;
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Server &Get(const char *pattern, Handler handler);
Server &Post(const char *pattern, Handler handler);
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Server &Put(const char *pattern, Handler handler);
Server &Patch(const char *pattern, Handler handler);
Server &Delete(const char *pattern, Handler handler);
Server &Options(const char *pattern, Handler handler);
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bool set_base_dir(const char *path);
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void set_error_handler(Handler handler);
void set_logger(Logger logger);
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void set_keep_alive_max_count(size_t count);
void set_payload_max_length(uint64_t length);
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int bind_to_any_port(const char *host, int socket_flags = 0);
bool listen_after_bind();
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bool listen(const char *host, int port, int socket_flags = 0);
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bool is_running() const;
void stop();
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protected:
bool process_request(Stream &strm, bool last_connection,
bool &connection_close);
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size_t keep_alive_max_count_;
size_t payload_max_length_;
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private:
typedef std::vector<std::pair<boost::regex, Handler>> Handlers;
socket_t create_server_socket(const char *host, int port,
int socket_flags) const;
int bind_internal(const char *host, int port, int socket_flags);
bool listen_internal();
bool routing(Request &req, Response &res);
bool handle_file_request(Request &req, Response &res);
bool dispatch_request(Request &req, Response &res, Handlers &handlers);
bool parse_request_line(const char *s, Request &req);
void write_response(Stream &strm, bool last_connection, const Request &req,
Response &res);
virtual bool read_and_close_socket(socket_t sock);
bool is_running_;
socket_t svr_sock_;
std::string base_dir_;
Handlers get_handlers_;
Handlers post_handlers_;
Handlers put_handlers_;
Handlers patch_handlers_;
Handlers delete_handlers_;
Handlers options_handlers_;
Handler error_handler_;
Logger logger_;
// TODO: Use thread pool...
std::mutex running_threads_mutex_;
int running_threads_;
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};
class Client {
public:
Client(const char *host, int port = 80, time_t timeout_sec = 300);
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virtual ~Client();
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virtual bool is_valid() const;
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std::shared_ptr<Response> Get(const char *path, Progress progress = nullptr);
std::shared_ptr<Response> Get(const char *path, const Headers &headers,
Progress progress = nullptr);
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std::shared_ptr<Response> Head(const char *path);
std::shared_ptr<Response> Head(const char *path, const Headers &headers);
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std::shared_ptr<Response> Post(const char *path, const std::string &body,
const char *content_type);
std::shared_ptr<Response> Post(const char *path, const Headers &headers,
const std::string &body,
const char *content_type);
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std::shared_ptr<Response> Post(const char *path, const Params &params);
std::shared_ptr<Response> Post(const char *path, const Headers &headers,
const Params &params);
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std::shared_ptr<Response> Put(const char *path, const std::string &body,
const char *content_type);
std::shared_ptr<Response> Put(const char *path, const Headers &headers,
const std::string &body,
const char *content_type);
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std::shared_ptr<Response> Patch(const char *path, const std::string &body,
const char *content_type);
std::shared_ptr<Response> Patch(const char *path, const Headers &headers,
const std::string &body,
const char *content_type);
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std::shared_ptr<Response> Delete(const char *path);
std::shared_ptr<Response> Delete(const char *path, const Headers &headers);
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std::shared_ptr<Response> Options(const char *path);
std::shared_ptr<Response> Options(const char *path, const Headers &headers);
bool send(Request &req, Response &res);
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protected:
bool process_request(Stream &strm, Request &req, Response &res,
bool &connection_close);
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const std::string host_;
const int port_;
time_t timeout_sec_;
const std::string host_and_port_;
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private:
socket_t create_client_socket() const;
bool read_response_line(Stream &strm, Response &res);
void write_request(Stream &strm, Request &req);
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virtual bool read_and_close_socket(socket_t sock, Request &req,
Response &res);
virtual bool is_ssl() const;
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};
#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
class SSLSocketStream : public Stream {
public:
SSLSocketStream(socket_t sock, SSL *ssl);
virtual ~SSLSocketStream();
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virtual int read(char *ptr, size_t size);
virtual int write(const char *ptr, size_t size);
virtual int write(const char *ptr);
virtual std::string get_remote_addr() const;
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private:
socket_t sock_;
SSL *ssl_;
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};
class SSLServer : public Server {
public:
SSLServer(const char *cert_path, const char *private_key_path);
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virtual ~SSLServer();
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virtual bool is_valid() const;
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private:
virtual bool read_and_close_socket(socket_t sock);
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SSL_CTX *ctx_;
std::mutex ctx_mutex_;
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};
class SSLClient : public Client {
public:
SSLClient(const char *host, int port = 443, time_t timeout_sec = 300);
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virtual ~SSLClient();
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virtual bool is_valid() const;
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private:
virtual bool read_and_close_socket(socket_t sock, Request &req,
Response &res);
virtual bool is_ssl() const;
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SSL_CTX *ctx_;
std::mutex ctx_mutex_;
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};
#endif
/*
* Implementation
*/
namespace detail {
template <class Fn> void split(const char *b, const char *e, char d, Fn fn) {
int i = 0;
int beg = 0;
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while (e ? (b + i != e) : (b[i] != '\0')) {
if (b[i] == d) {
fn(&b[beg], &b[i]);
beg = i + 1;
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}
i++;
}
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if (i) { fn(&b[beg], &b[i]); }
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}
// NOTE: until the read size reaches `fixed_buffer_size`, use `fixed_buffer`
// to store data. The call can set memory on stack for performance.
class stream_line_reader {
public:
stream_line_reader(Stream &strm, char *fixed_buffer, size_t fixed_buffer_size)
: strm_(strm), fixed_buffer_(fixed_buffer),
fixed_buffer_size_(fixed_buffer_size) {}
const char *ptr() const {
if (glowable_buffer_.empty()) {
return fixed_buffer_;
} else {
return glowable_buffer_.data();
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}
}
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size_t size() const {
if (glowable_buffer_.empty()) {
return fixed_buffer_used_size_;
} else {
return glowable_buffer_.size();
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}
}
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bool getline() {
fixed_buffer_used_size_ = 0;
glowable_buffer_.clear();
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for (size_t i = 0;; i++) {
char byte;
auto n = strm_.read(&byte, 1);
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if (n < 0) {
return false;
} else if (n == 0) {
if (i == 0) {
return false;
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} else {
break;
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}
}
append(byte);
if (byte == '\n') { break; }
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}
return true;
}
private:
void append(char c) {
if (fixed_buffer_used_size_ < fixed_buffer_size_ - 1) {
fixed_buffer_[fixed_buffer_used_size_++] = c;
fixed_buffer_[fixed_buffer_used_size_] = '\0';
} else {
if (glowable_buffer_.empty()) {
assert(fixed_buffer_[fixed_buffer_used_size_] == '\0');
glowable_buffer_.assign(fixed_buffer_, fixed_buffer_used_size_);
}
glowable_buffer_ += c;
}
}
Stream &strm_;
char *fixed_buffer_;
const size_t fixed_buffer_size_;
size_t fixed_buffer_used_size_;
std::string glowable_buffer_;
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};
inline int close_socket(socket_t sock) {
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#ifdef _WIN32
return closesocket(sock);
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#else
return close(sock);
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#endif
}
inline int select_read(socket_t sock, time_t sec, time_t usec) {
fd_set fds;
FD_ZERO(&fds);
FD_SET(sock, &fds);
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timeval tv;
tv.tv_sec = static_cast<long>(sec);
tv.tv_usec = static_cast<long>(usec);
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return select(static_cast<int>(sock + 1), &fds, NULL, NULL, &tv);
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}
inline bool wait_until_socket_is_ready(socket_t sock, time_t sec, time_t usec) {
fd_set fdsr;
FD_ZERO(&fdsr);
FD_SET(sock, &fdsr);
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auto fdsw = fdsr;
auto fdse = fdsr;
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timeval tv;
tv.tv_sec = static_cast<long>(sec);
tv.tv_usec = static_cast<long>(usec);
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if (select(static_cast<int>(sock + 1), &fdsr, &fdsw, &fdse, &tv) < 0) {
return false;
} else if (FD_ISSET(sock, &fdsr) || FD_ISSET(sock, &fdsw)) {
int error = 0;
socklen_t len = sizeof(error);
if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &len) < 0 ||
error) {
return false;
}
} else {
return false;
}
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return true;
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}
template <typename T>
inline bool read_and_close_socket(socket_t sock, size_t keep_alive_max_count,
T callback) {
bool ret = false;
if (keep_alive_max_count > 0) {
auto count = keep_alive_max_count;
while (count > 0 &&
detail::select_read(sock, CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND,
CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND) > 0) {
SocketStream strm(sock);
auto last_connection = count == 1;
auto connection_close = false;
ret = callback(strm, last_connection, connection_close);
if (!ret || connection_close) { break; }
count--;
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}
} else {
SocketStream strm(sock);
auto dummy_connection_close = false;
ret = callback(strm, true, dummy_connection_close);
}
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close_socket(sock);
return ret;
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}
inline int shutdown_socket(socket_t sock) {
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#ifdef _WIN32
return shutdown(sock, SD_BOTH);
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#else
return shutdown(sock, SHUT_RDWR);
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#endif
}
template <typename Fn>
socket_t create_socket(const char *host, int port, Fn fn,
int socket_flags = 0) {
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#ifdef _WIN32
#define SO_SYNCHRONOUS_NONALERT 0x20
#define SO_OPENTYPE 0x7008
int opt = SO_SYNCHRONOUS_NONALERT;
setsockopt(INVALID_SOCKET, SOL_SOCKET, SO_OPENTYPE, (char *)&opt,
sizeof(opt));
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#endif
// Get address info
struct addrinfo hints;
struct addrinfo *result;
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memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = socket_flags;
hints.ai_protocol = 0;
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auto service = std::to_string(port);
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if (getaddrinfo(host, service.c_str(), &hints, &result)) {
return INVALID_SOCKET;
}
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for (auto rp = result; rp; rp = rp->ai_next) {
// Create a socket
auto sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (sock == INVALID_SOCKET) { continue; }
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// Make 'reuse address' option available
int yes = 1;
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&yes, sizeof(yes));
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// bind or connect
if (fn(sock, *rp)) {
freeaddrinfo(result);
return sock;
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}
close_socket(sock);
}
freeaddrinfo(result);
return INVALID_SOCKET;
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}
inline void set_nonblocking(socket_t sock, bool nonblocking) {
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#ifdef _WIN32
auto flags = nonblocking ? 1UL : 0UL;
ioctlsocket(sock, FIONBIO, &flags);
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#else
auto flags = fcntl(sock, F_GETFL, 0);
fcntl(sock, F_SETFL,
nonblocking ? (flags | O_NONBLOCK) : (flags & (~O_NONBLOCK)));
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#endif
}
inline bool is_connection_error() {
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#ifdef _WIN32
return WSAGetLastError() != WSAEWOULDBLOCK;
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#else
return errno != EINPROGRESS;
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#endif
}
inline std::string get_remote_addr(socket_t sock) {
struct sockaddr_storage addr;
socklen_t len = sizeof(addr);
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if (!getpeername(sock, (struct sockaddr *)&addr, &len)) {
char ipstr[NI_MAXHOST];
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if (!getnameinfo((struct sockaddr *)&addr, len, ipstr, sizeof(ipstr),
nullptr, 0, NI_NUMERICHOST)) {
return ipstr;
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}
}
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return std::string();
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}
inline bool is_file(const std::string &path) {
struct stat st;
return stat(path.c_str(), &st) >= 0 && S_ISREG(st.st_mode);
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}
inline bool is_dir(const std::string &path) {
struct stat st;
return stat(path.c_str(), &st) >= 0 && S_ISDIR(st.st_mode);
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}
inline bool is_valid_path(const std::string &path) {
size_t level = 0;
size_t i = 0;
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// Skip slash
while (i < path.size() && path[i] == '/') {
i++;
}
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while (i < path.size()) {
// Read component
auto beg = i;
while (i < path.size() && path[i] != '/') {
i++;
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}
auto len = i - beg;
assert(len > 0);
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if (!path.compare(beg, len, ".")) {
;
} else if (!path.compare(beg, len, "..")) {
if (level == 0) { return false; }
level--;
} else {
level++;
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}
// Skip slash
while (i < path.size() && path[i] == '/') {
i++;
}
}
return true;
}
inline void read_file(const std::string &path, std::string &out) {
std::ifstream fs(path, std::ios_base::binary);
fs.seekg(0, std::ios_base::end);
auto size = fs.tellg();
fs.seekg(0);
out.resize(static_cast<size_t>(size));
fs.read(&out[0], size);
}
inline std::string file_extension(const std::string &path) {
boost::smatch m;
auto pat = boost::regex("\\.([a-zA-Z0-9]+)$");
if (boost::regex_search(path, m, pat)) { return m[1].str(); }
return std::string();
}
inline const char *find_content_type(const std::string &path) {
auto ext = file_extension(path);
if (ext == "txt") {
return "text/plain";
} else if (ext == "html") {
return "text/html";
} else if (ext == "css") {
return "text/css";
} else if (ext == "jpeg" || ext == "jpg") {
return "image/jpg";
} else if (ext == "png") {
return "image/png";
} else if (ext == "gif") {
return "image/gif";
} else if (ext == "svg") {
return "image/svg+xml";
} else if (ext == "ico") {
return "image/x-icon";
} else if (ext == "json") {
return "application/json";
} else if (ext == "pdf") {
return "application/pdf";
} else if (ext == "js") {
return "application/javascript";
} else if (ext == "xml") {
return "application/xml";
} else if (ext == "xhtml") {
return "application/xhtml+xml";
}
return nullptr;
}
inline const char *status_message(int status) {
switch (status) {
case 200: return "OK";
case 301: return "Moved Permanently";
case 302: return "Found";
case 303: return "See Other";
case 304: return "Not Modified";
case 400: return "Bad Request";
case 403: return "Forbidden";
case 404: return "Not Found";
case 413: return "Payload Too Large";
case 414: return "Request-URI Too Long";
case 415: return "Unsupported Media Type";
default:
case 500: return "Internal Server Error";
}
}
inline bool has_header(const Headers &headers, const char *key) {
return headers.find(key) != headers.end();
}
inline const char *get_header_value(const Headers &headers, const char *key,
size_t id = 0, const char *def = nullptr) {
auto it = headers.find(key);
std::advance(it, id);
if (it != headers.end()) { return it->second.c_str(); }
return def;
}
inline uint64_t get_header_value_uint64(const Headers &headers, const char *key,
int def = 0) {
auto it = headers.find(key);
if (it != headers.end()) {
return std::strtoull(it->second.data(), nullptr, 10);
}
return def;
}
inline bool read_headers(Stream &strm, Headers &headers) {
static boost::regex re(R"((.+?):\s*(.+?)\s*\r\n)");
const auto bufsiz = 2048;
char buf[bufsiz];
stream_line_reader reader(strm, buf, bufsiz);
for (;;) {
if (!reader.getline()) { return false; }
if (!strcmp(reader.ptr(), "\r\n")) { break; }
boost::cmatch m;
if (boost::regex_match(reader.ptr(), m, re)) {
auto key = std::string(m[1]);
auto val = std::string(m[2]);
headers.emplace(key, val);
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}
}
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return true;
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}
inline bool read_content_with_length(Stream &strm, std::string &out, size_t len,
Progress progress) {
out.assign(len, 0);
size_t r = 0;
while (r < len) {
auto n = strm.read(&out[r], len - r);
if (n <= 0) { return false; }
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r += n;
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if (progress) {
if (!progress(r, len)) { return false; }
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}
}
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return true;
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}
inline bool read_content_without_length(Stream &strm, std::string &out) {
for (;;) {
char byte;
auto n = strm.read(&byte, 1);
if (n < 0) {
return false;
} else if (n == 0) {
return true;
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}
out += byte;
}
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return true;
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}
inline bool read_content_chunked(Stream &strm, std::string &out) {
const auto bufsiz = 16;
char buf[bufsiz];
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stream_line_reader reader(strm, buf, bufsiz);
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if (!reader.getline()) { return false; }
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auto chunk_len = std::stoi(reader.ptr(), 0, 16);
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while (chunk_len > 0) {
std::string chunk;
if (!read_content_with_length(strm, chunk, chunk_len, nullptr)) {
return false;
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}
if (!reader.getline()) { return false; }
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if (strcmp(reader.ptr(), "\r\n")) { break; }
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out += chunk;
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if (!reader.getline()) { return false; }
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chunk_len = std::stoi(reader.ptr(), 0, 16);
}
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if (chunk_len == 0) {
// Reader terminator after chunks
if (!reader.getline() || strcmp(reader.ptr(), "\r\n")) return false;
}
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return true;
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}
template <typename T>
bool read_content(Stream &strm, T &x, uint64_t payload_max_length,
bool &exceed_payload_max_length,
Progress progress = Progress()) {
if (has_header(x.headers, "Content-Length")) {
auto len = get_header_value_uint64(x.headers, "Content-Length", 0);
if (len == 0) {
const auto &encoding =
get_header_value(x.headers, "Transfer-Encoding", 0, "");
if (!strcasecmp(encoding, "chunked")) {
return read_content_chunked(strm, x.body);
}
}
if ((len > payload_max_length) ||
// For 32-bit platform
(sizeof(size_t) < sizeof(uint64_t) &&
len > std::numeric_limits<size_t>::max())) {
exceed_payload_max_length = true;
return false;
}
return read_content_with_length(strm, x.body, len, progress);
} else {
const auto &encoding =
get_header_value(x.headers, "Transfer-Encoding", 0, "");
if (!strcasecmp(encoding, "chunked")) {
return read_content_chunked(strm, x.body);
}
return read_content_without_length(strm, x.body);
}
return true;
}
template <typename T> inline void write_headers(Stream &strm, const T &info) {
for (const auto &x : info.headers) {
strm.write_format("%s: %s\r\n", x.first.c_str(), x.second.c_str());
}
strm.write("\r\n");
}
inline std::string encode_url(const std::string &s) {
std::string result;
for (auto i = 0; s[i]; i++) {
switch (s[i]) {
case ' ': result += "%20"; break;
case '+': result += "%2B"; break;
case '\r': result += "%0D"; break;
case '\n': result += "%0A"; break;
case '\'': result += "%27"; break;
case ',': result += "%2C"; break;
case ':': result += "%3A"; break;
case ';': result += "%3B"; break;
default:
auto c = static_cast<uint8_t>(s[i]);
if (c >= 0x80) {
result += '%';
char hex[4];
size_t len = snprintf(hex, sizeof(hex) - 1, "%02X", c);
assert(len == 2);
result.append(hex, len);
} else {
result += s[i];
}
break;
}
}
return result;
}
inline bool is_hex(char c, int &v) {
if (0x20 <= c && isdigit(c)) {
v = c - '0';
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return true;
} else if ('A' <= c && c <= 'F') {
v = c - 'A' + 10;
return true;
} else if ('a' <= c && c <= 'f') {
v = c - 'a' + 10;
return true;
}
return false;
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}
inline bool from_hex_to_i(const std::string &s, size_t i, size_t cnt,
int &val) {
if (i >= s.size()) { return false; }
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val = 0;
for (; cnt; i++, cnt--) {
if (!s[i]) { return false; }
int v = 0;
if (is_hex(s[i], v)) {
val = val * 16 + v;
} else {
return false;
}
}
return true;
}
inline std::string from_i_to_hex(uint64_t n) {
const char *charset = "0123456789abcdef";
std::string ret;
do {
ret = charset[n & 15] + ret;
n >>= 4;
} while (n > 0);
return ret;
}
inline size_t to_utf8(int code, char *buff) {
if (code < 0x0080) {
buff[0] = (code & 0x7F);
return 1;
} else if (code < 0x0800) {
buff[0] = (0xC0 | ((code >> 6) & 0x1F));
buff[1] = (0x80 | (code & 0x3F));
return 2;
} else if (code < 0xD800) {
buff[0] = (0xE0 | ((code >> 12) & 0xF));
buff[1] = (0x80 | ((code >> 6) & 0x3F));
buff[2] = (0x80 | (code & 0x3F));
return 3;
} else if (code < 0xE000) { // D800 - DFFF is invalid...
return 0;
} else if (code < 0x10000) {
buff[0] = (0xE0 | ((code >> 12) & 0xF));
buff[1] = (0x80 | ((code >> 6) & 0x3F));
buff[2] = (0x80 | (code & 0x3F));
return 3;
} else if (code < 0x110000) {
buff[0] = (0xF0 | ((code >> 18) & 0x7));
buff[1] = (0x80 | ((code >> 12) & 0x3F));
buff[2] = (0x80 | ((code >> 6) & 0x3F));
buff[3] = (0x80 | (code & 0x3F));
return 4;
}
// NOTREACHED
return 0;
}
inline std::string decode_url(const std::string &s) {
std::string result;
for (size_t i = 0; i < s.size(); i++) {
if (s[i] == '%' && i + 1 < s.size()) {
if (s[i + 1] == 'u') {
int val = 0;
if (from_hex_to_i(s, i + 2, 4, val)) {
// 4 digits Unicode codes
char buff[4];
size_t len = to_utf8(val, buff);
if (len > 0) { result.append(buff, len); }
i += 5; // 'u0000'
} else {
result += s[i];
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}
} else {
int val = 0;
if (from_hex_to_i(s, i + 1, 2, val)) {
// 2 digits hex codes
result += val;
i += 2; // '00'
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} else {
result += s[i];
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}
}
} else if (s[i] == '+') {
result += ' ';
} else {
result += s[i];
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}
}
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return result;
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}
inline void parse_query_text(const std::string &s, Params &params) {
split(&s[0], &s[s.size()], '&', [&](const char *b, const char *e) {
std::string key;
std::string val;
split(b, e, '=', [&](const char *b, const char *e) {
if (key.empty()) {
key.assign(b, e);
} else {
val.assign(b, e);
}
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});
params.emplace(key, decode_url(val));
});
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}
inline bool parse_multipart_boundary(const std::string &content_type,
std::string &boundary) {
auto pos = content_type.find("boundary=");
if (pos == std::string::npos) { return false; }
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boundary = content_type.substr(pos + 9);
return true;
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}
inline bool parse_multipart_formdata(const std::string &boundary,
const std::string &body,
MultipartFiles &files) {
static std::string dash = "--";
static std::string crlf = "\r\n";
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static boost::regex re_content_type("Content-Type: (.*?)",
boost::regex_constants::icase);
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static boost::regex re_content_disposition(
"Content-Disposition: form-data; name=\"(.*?)\"(?:; filename=\"(.*?)\")?",
boost::regex_constants::icase);
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auto dash_boundary = dash + boundary;
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auto pos = body.find(dash_boundary);
if (pos != 0) { return false; }
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pos += dash_boundary.size();
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auto next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) { return false; }
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pos = next_pos + crlf.size();
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while (pos < body.size()) {
next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) { return false; }
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std::string name;
MultipartFile file;
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auto header = body.substr(pos, (next_pos - pos));
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while (pos != next_pos) {
boost::smatch m;
if (boost::regex_match(header, m, re_content_type)) {
file.content_type = m[1];
} else if (boost::regex_match(header, m, re_content_disposition)) {
name = m[1];
file.filename = m[2];
}
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pos = next_pos + crlf.size();
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next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) { return false; }
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header = body.substr(pos, (next_pos - pos));
}
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pos = next_pos + crlf.size();
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next_pos = body.find(crlf + dash_boundary, pos);
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if (next_pos == std::string::npos) { return false; }
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file.offset = pos;
file.length = next_pos - pos;
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pos = next_pos + crlf.size() + dash_boundary.size();
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next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) { return false; }
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files.emplace(name, file);
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pos = next_pos + crlf.size();
}
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return true;
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}
inline std::string to_lower(const char *beg, const char *end) {
std::string out;
auto it = beg;
while (it != end) {
out += ::tolower(*it);
it++;
}
return out;
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}
inline void make_range_header_core(std::string &) {}
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template <typename uint64_t>
inline void make_range_header_core(std::string &field, uint64_t value) {
if (!field.empty()) { field += ", "; }
field += std::to_string(value) + "-";
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}
template <typename uint64_t, typename... Args>
inline void make_range_header_core(std::string &field, uint64_t value1,
uint64_t value2, Args... args) {
if (!field.empty()) { field += ", "; }
field += std::to_string(value1) + "-" + std::to_string(value2);
make_range_header_core(field, args...);
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}
#ifdef CPPHTTPLIB_ZLIB_SUPPORT
inline bool can_compress(const std::string &content_type) {
return !content_type.find("text/") || content_type == "image/svg+xml" ||
content_type == "application/javascript" ||
content_type == "application/json" ||
content_type == "application/xml" ||
content_type == "application/xhtml+xml";
}
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inline void compress(std::string &content) {
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
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auto ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 31, 8,
Z_DEFAULT_STRATEGY);
if (ret != Z_OK) { return; }
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strm.avail_in = content.size();
strm.next_in = (Bytef *)content.data();
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std::string compressed;
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const auto bufsiz = 16384;
char buff[bufsiz];
do {
strm.avail_out = bufsiz;
strm.next_out = (Bytef *)buff;
deflate(&strm, Z_FINISH);
compressed.append(buff, bufsiz - strm.avail_out);
} while (strm.avail_out == 0);
content.swap(compressed);
deflateEnd(&strm);
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}
inline void decompress(std::string &content) {
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
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// 15 is the value of wbits, which should be at the maximum possible value to
// ensure that any gzip stream can be decoded. The offset of 16 specifies that
// the stream to decompress will be formatted with a gzip wrapper.
auto ret = inflateInit2(&strm, 16 + 15);
if (ret != Z_OK) { return; }
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strm.avail_in = content.size();
strm.next_in = (Bytef *)content.data();
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std::string decompressed;
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const auto bufsiz = 16384;
char buff[bufsiz];
do {
strm.avail_out = bufsiz;
strm.next_out = (Bytef *)buff;
inflate(&strm, Z_NO_FLUSH);
decompressed.append(buff, bufsiz - strm.avail_out);
} while (strm.avail_out == 0);
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content.swap(decompressed);
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inflateEnd(&strm);
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}
#endif
#ifdef _WIN32
class WSInit {
public:
WSInit() {
WSADATA wsaData;
WSAStartup(0x0002, &wsaData);
}
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~WSInit() { WSACleanup(); }
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};
static WSInit wsinit_;
#endif
} // namespace detail
// Header utilities
template <typename uint64_t, typename... Args>
inline std::pair<std::string, std::string> make_range_header(uint64_t value,
Args... args) {
std::string field;
detail::make_range_header_core(field, value, args...);
field.insert(0, "bytes=");
return std::make_pair("Range", field);
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}
// Request implementation
inline bool Request::has_header(const char *key) const {
return detail::has_header(headers, key);
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}
inline std::string Request::get_header_value(const char *key, size_t id) const {
return detail::get_header_value(headers, key, id, "");
}
inline size_t Request::get_header_value_count(const char *key) const {
auto r = headers.equal_range(key);
return std::distance(r.first, r.second);
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}
inline void Request::set_header(const char *key, const char *val) {
headers.emplace(key, val);
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}
inline bool Request::has_param(const char *key) const {
return params.find(key) != params.end();
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}
inline std::string Request::get_param_value(const char *key, size_t id) const {
auto it = params.find(key);
std::advance(it, id);
if (it != params.end()) { return it->second; }
return std::string();
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}
inline size_t Request::get_param_value_count(const char *key) const {
auto r = params.equal_range(key);
return std::distance(r.first, r.second);
}
inline bool Request::has_file(const char *key) const {
return files.find(key) != files.end();
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}
inline MultipartFile Request::get_file_value(const char *key) const {
auto it = files.find(key);
if (it != files.end()) { return it->second; }
return MultipartFile();
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}
// Response implementation
inline bool Response::has_header(const char *key) const {
return headers.find(key) != headers.end();
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}
inline std::string Response::get_header_value(const char *key,
size_t id) const {
return detail::get_header_value(headers, key, id, "");
}
inline size_t Response::get_header_value_count(const char *key) const {
auto r = headers.equal_range(key);
return std::distance(r.first, r.second);
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}
inline void Response::set_header(const char *key, const char *val) {
headers.emplace(key, val);
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}
inline void Response::set_redirect(const char *url) {
set_header("Location", url);
status = 302;
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}
inline void Response::set_content(const char *s, size_t n,
const char *content_type) {
body.assign(s, n);
set_header("Content-Type", content_type);
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}
inline void Response::set_content(const std::string &s,
const char *content_type) {
body = s;
set_header("Content-Type", content_type);
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}
// Rstream implementation
template <typename... Args>
inline void Stream::write_format(const char *fmt, const Args &... args) {
const auto bufsiz = 2048;
char buf[bufsiz];
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#if defined(_MSC_VER) && _MSC_VER < 1900
auto n = _snprintf_s(buf, bufsiz, bufsiz - 1, fmt, args...);
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#else
auto n = snprintf(buf, bufsiz - 1, fmt, args...);
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#endif
if (n > 0) {
if (n >= bufsiz - 1) {
std::vector<char> glowable_buf(bufsiz);
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while (n >= static_cast<int>(glowable_buf.size() - 1)) {
glowable_buf.resize(glowable_buf.size() * 2);
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#if defined(_MSC_VER) && _MSC_VER < 1900
n = _snprintf_s(&glowable_buf[0], glowable_buf.size(),
glowable_buf.size() - 1, fmt, args...);
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#else
n = snprintf(&glowable_buf[0], glowable_buf.size() - 1, fmt, args...);
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#endif
}
write(&glowable_buf[0], n);
} else {
write(buf, n);
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}
}
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}
// Socket stream implementation
inline SocketStream::SocketStream(socket_t sock) : sock_(sock) {}
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inline SocketStream::~SocketStream() {}
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inline int SocketStream::read(char *ptr, size_t size) {
return recv(sock_, ptr, static_cast<int>(size), 0);
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}
inline int SocketStream::write(const char *ptr, size_t size) {
return send(sock_, ptr, static_cast<int>(size), 0);
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}
inline int SocketStream::write(const char *ptr) {
return write(ptr, strlen(ptr));
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}
inline std::string SocketStream::get_remote_addr() const {
return detail::get_remote_addr(sock_);
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}
// Buffer stream implementation
inline int BufferStream::read(char *ptr, size_t size) {
#if defined(_MSC_VER) && _MSC_VER < 1900
return static_cast<int>(buffer._Copy_s(ptr, size, size));
#else
return static_cast<int>(buffer.copy(ptr, size));
#endif
}
inline int BufferStream::write(const char *ptr, size_t size) {
buffer.append(ptr, size);
return static_cast<int>(size);
}
inline int BufferStream::write(const char *ptr) {
size_t size = strlen(ptr);
buffer.append(ptr, size);
return static_cast<int>(size);
}
inline std::string BufferStream::get_remote_addr() const { return ""; }
inline const std::string &BufferStream::get_buffer() const { return buffer; }
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// HTTP server implementation
inline Server::Server()
: keep_alive_max_count_(CPPHTTPLIB_KEEPALIVE_MAX_COUNT),
payload_max_length_(CPPHTTPLIB_PAYLOAD_MAX_LENGTH), is_running_(false),
svr_sock_(INVALID_SOCKET), running_threads_(0) {
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#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
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#endif
}
inline Server::~Server() {}
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inline Server &Server::Get(const char *pattern, Handler handler) {
get_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline Server &Server::Post(const char *pattern, Handler handler) {
post_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline Server &Server::Put(const char *pattern, Handler handler) {
put_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline Server &Server::Patch(const char *pattern, Handler handler) {
patch_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline Server &Server::Delete(const char *pattern, Handler handler) {
delete_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline Server &Server::Options(const char *pattern, Handler handler) {
options_handlers_.push_back(std::make_pair(boost::regex(pattern), handler));
return *this;
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}
inline bool Server::set_base_dir(const char *path) {
if (detail::is_dir(path)) {
base_dir_ = path;
return true;
}
return false;
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}
inline void Server::set_error_handler(Handler handler) {
error_handler_ = handler;
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}
inline void Server::set_logger(Logger logger) { logger_ = logger; }
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inline void Server::set_keep_alive_max_count(size_t count) {
keep_alive_max_count_ = count;
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}
inline void Server::set_payload_max_length(uint64_t length) {
payload_max_length_ = length;
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}
inline int Server::bind_to_any_port(const char *host, int socket_flags) {
return bind_internal(host, 0, socket_flags);
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}
inline bool Server::listen_after_bind() { return listen_internal(); }
inline bool Server::listen(const char *host, int port, int socket_flags) {
if (bind_internal(host, port, socket_flags) < 0) return false;
return listen_internal();
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}
inline bool Server::is_running() const { return is_running_; }
inline void Server::stop() {
if (is_running_) {
assert(svr_sock_ != INVALID_SOCKET);
auto sock = svr_sock_;
svr_sock_ = INVALID_SOCKET;
detail::shutdown_socket(sock);
detail::close_socket(sock);
}
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}
inline bool Server::parse_request_line(const char *s, Request &req) {
static boost::regex re("(GET|HEAD|POST|PUT|PATCH|DELETE|OPTIONS) "
"(([^?]+)(?:\\?(.+?))?) (HTTP/1\\.[01])\r\n");
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boost::cmatch m;
if (boost::regex_match(s, m, re)) {
req.version = std::string(m[5]);
req.method = std::string(m[1]);
req.target = std::string(m[2]);
req.path = detail::decode_url(m[3]);
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// Parse query text
auto len = std::distance(m[4].first, m[4].second);
if (len > 0) { detail::parse_query_text(m[4], req.params); }
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return true;
}
return false;
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}
inline void Server::write_response(Stream &strm, bool last_connection,
const Request &req, Response &res) {
assert(res.status != -1);
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if (400 <= res.status && error_handler_) { error_handler_(req, res); }
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// Response line
strm.write_format("HTTP/1.1 %d %s\r\n", res.status,
detail::status_message(res.status));
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// Headers
if (last_connection || req.get_header_value("Connection") == "close") {
res.set_header("Connection", "close");
}
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if (!last_connection && req.get_header_value("Connection") == "Keep-Alive") {
res.set_header("Connection", "Keep-Alive");
}
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if (res.body.empty()) {
if (!res.has_header("Content-Length")) {
if (res.streamcb) {
// Streamed response
res.set_header("Transfer-Encoding", "chunked");
} else {
res.set_header("Content-Length", "0");
}
}
} else {
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#ifdef CPPHTTPLIB_ZLIB_SUPPORT
// TODO: 'Accpet-Encoding' has gzip, not gzip;q=0
const auto &encodings = req.get_header_value("Accept-Encoding");
if (encodings.find("gzip") != std::string::npos &&
detail::can_compress(res.get_header_value("Content-Type"))) {
detail::compress(res.body);
res.set_header("Content-Encoding", "gzip");
}
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#endif
if (!res.has_header("Content-Type")) {
res.set_header("Content-Type", "text/plain");
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}
auto length = std::to_string(res.body.size());
res.set_header("Content-Length", length.c_str());
}
detail::write_headers(strm, res);
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// Body
if (req.method != "HEAD") {
if (!res.body.empty()) {
strm.write(res.body.c_str(), res.body.size());
} else if (res.streamcb) {
bool chunked_response = !res.has_header("Content-Length");
uint64_t offset = 0;
bool data_available = true;
while (data_available) {
std::string chunk = res.streamcb(offset);
offset += chunk.size();
data_available = !chunk.empty();
// Emit chunked response header and footer for each chunk
if (chunked_response)
chunk = detail::from_i_to_hex(chunk.size()) + "\r\n" + chunk + "\r\n";
if (strm.write(chunk.c_str(), chunk.size()) < 0) break; // Stop on error
}
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}
}
// Log
if (logger_) { logger_(req, res); }
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}
inline bool Server::handle_file_request(Request &req, Response &res) {
if (!base_dir_.empty() && detail::is_valid_path(req.path)) {
std::string path = base_dir_ + req.path;
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if (!path.empty() && path.back() == '/') { path += "index.html"; }
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if (detail::is_file(path)) {
detail::read_file(path, res.body);
auto type = detail::find_content_type(path);
if (type) { res.set_header("Content-Type", type); }
res.status = 200;
return true;
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}
}
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return false;
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}
inline socket_t Server::create_server_socket(const char *host, int port,
int socket_flags) const {
return detail::create_socket(
host, port,
[](socket_t sock, struct addrinfo &ai) -> bool {
if (::bind(sock, ai.ai_addr, static_cast<int>(ai.ai_addrlen))) {
return false;
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}
if (::listen(sock, 5)) { // Listen through 5 channels
return false;
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}
return true;
},
socket_flags);
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}
inline int Server::bind_internal(const char *host, int port, int socket_flags) {
if (!is_valid()) { return -1; }
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svr_sock_ = create_server_socket(host, port, socket_flags);
if (svr_sock_ == INVALID_SOCKET) { return -1; }
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if (port == 0) {
struct sockaddr_storage address;
socklen_t len = sizeof(address);
if (getsockname(svr_sock_, reinterpret_cast<struct sockaddr *>(&address),
&len) == -1) {
return -1;
}
if (address.ss_family == AF_INET) {
return ntohs(reinterpret_cast<struct sockaddr_in *>(&address)->sin_port);
} else if (address.ss_family == AF_INET6) {
return ntohs(
reinterpret_cast<struct sockaddr_in6 *>(&address)->sin6_port);
} else {
return -1;
}
} else {
return port;
}
}
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inline bool Server::listen_internal() {
auto ret = true;
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is_running_ = true;
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for (;;) {
auto val = detail::select_read(svr_sock_, 0, 100000);
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if (val == 0) { // Timeout
if (svr_sock_ == INVALID_SOCKET) {
// The server socket was closed by 'stop' method.
break;
}
continue;
}
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socket_t sock = accept(svr_sock_, NULL, NULL);
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if (sock == INVALID_SOCKET) {
if (svr_sock_ != INVALID_SOCKET) {
detail::close_socket(svr_sock_);
ret = false;
} else {
; // The server socket was closed by user.
}
break;
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}
// TODO: Use thread pool...
std::thread([=]() {
{
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std::lock_guard<std::mutex> guard(running_threads_mutex_);
running_threads_++;
}
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read_and_close_socket(sock);
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{
std::lock_guard<std::mutex> guard(running_threads_mutex_);
running_threads_--;
}
}).detach();
}
// TODO: Use thread pool...
for (;;) {
std::this_thread::sleep_for(std::chrono::milliseconds(10));
std::lock_guard<std::mutex> guard(running_threads_mutex_);
if (!running_threads_) { break; }
}
is_running_ = false;
return ret;
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}
inline bool Server::routing(Request &req, Response &res) {
if (req.method == "GET" && handle_file_request(req, res)) { return true; }
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if (req.method == "GET" || req.method == "HEAD") {
return dispatch_request(req, res, get_handlers_);
} else if (req.method == "POST") {
return dispatch_request(req, res, post_handlers_);
} else if (req.method == "PUT") {
return dispatch_request(req, res, put_handlers_);
} else if (req.method == "PATCH") {
return dispatch_request(req, res, patch_handlers_);
} else if (req.method == "DELETE") {
return dispatch_request(req, res, delete_handlers_);
} else if (req.method == "OPTIONS") {
return dispatch_request(req, res, options_handlers_);
}
return false;
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}
inline bool Server::dispatch_request(Request &req, Response &res,
Handlers &handlers) {
for (const auto &x : handlers) {
const auto &pattern = x.first;
const auto &handler = x.second;
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if (boost::regex_match(req.path, req.matches, pattern)) {
handler(req, res);
return true;
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}
}
return false;
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}
inline bool Server::process_request(Stream &strm, bool last_connection,
bool &connection_close) {
const auto bufsiz = 2048;
char buf[bufsiz];
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detail::stream_line_reader reader(strm, buf, bufsiz);
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// Connection has been closed on client
if (!reader.getline()) { return false; }
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Request req;
Response res;
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res.version = "HTTP/1.1";
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// Check if the request URI doesn't exceed the limit
if (reader.size() > CPPHTTPLIB_REQUEST_URI_MAX_LENGTH) {
res.status = 414;
write_response(strm, last_connection, req, res);
return true;
}
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// Request line and headers
if (!parse_request_line(reader.ptr(), req) ||
!detail::read_headers(strm, req.headers)) {
res.status = 400;
write_response(strm, last_connection, req, res);
return true;
}
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if (req.get_header_value("Connection") == "close") {
connection_close = true;
}
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req.set_header("REMOTE_ADDR", strm.get_remote_addr().c_str());
// Body
if (req.method == "POST" || req.method == "PUT" || req.method == "PATCH") {
bool exceed_payload_max_length = false;
if (!detail::read_content(strm, req, payload_max_length_,
exceed_payload_max_length)) {
res.status = exceed_payload_max_length ? 413 : 400;
write_response(strm, last_connection, req, res);
return !exceed_payload_max_length;
}
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const auto &content_type = req.get_header_value("Content-Type");
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if (req.get_header_value("Content-Encoding") == "gzip") {
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#ifdef CPPHTTPLIB_ZLIB_SUPPORT
detail::decompress(req.body);
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#else
res.status = 415;
write_response(strm, last_connection, req, res);
return true;
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#endif
}
if (!content_type.find("application/x-www-form-urlencoded")) {
detail::parse_query_text(req.body, req.params);
} else if (!content_type.find("multipart/form-data")) {
std::string boundary;
if (!detail::parse_multipart_boundary(content_type, boundary) ||
!detail::parse_multipart_formdata(boundary, req.body, req.files)) {
res.status = 400;
write_response(strm, last_connection, req, res);
return true;
}
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}
}
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if (routing(req, res)) {
if (res.status == -1) { res.status = 200; }
} else {
res.status = 404;
}
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write_response(strm, last_connection, req, res);
return true;
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}
inline bool Server::is_valid() const { return true; }
inline bool Server::read_and_close_socket(socket_t sock) {
return detail::read_and_close_socket(
sock, keep_alive_max_count_,
[this](Stream &strm, bool last_connection, bool &connection_close) {
return process_request(strm, last_connection, connection_close);
});
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}
// HTTP client implementation
inline Client::Client(const char *host, int port, time_t timeout_sec)
: host_(host), port_(port), timeout_sec_(timeout_sec),
host_and_port_(host_ + ":" + std::to_string(port_)) {}
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inline Client::~Client() {}
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inline bool Client::is_valid() const { return true; }
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inline socket_t Client::create_client_socket() const {
return detail::create_socket(
host_.c_str(), port_, [=](socket_t sock, struct addrinfo &ai) -> bool {
detail::set_nonblocking(sock, true);
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auto ret = connect(sock, ai.ai_addr, static_cast<int>(ai.ai_addrlen));
if (ret < 0) {
if (detail::is_connection_error() ||
!detail::wait_until_socket_is_ready(sock, timeout_sec_, 0)) {
detail::close_socket(sock);
return false;
}
}
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detail::set_nonblocking(sock, false);
return true;
});
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}
inline bool Client::read_response_line(Stream &strm, Response &res) {
const auto bufsiz = 2048;
char buf[bufsiz];
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detail::stream_line_reader reader(strm, buf, bufsiz);
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if (!reader.getline()) { return false; }
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const static boost::regex re("(HTTP/1\\.[01]) (\\d+?) .*\r\n");
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boost::cmatch m;
if (boost::regex_match(reader.ptr(), m, re)) {
res.version = std::string(m[1]);
res.status = std::stoi(std::string(m[2]));
}
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return true;
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}
inline bool Client::send(Request &req, Response &res) {
if (req.path.empty()) { return false; }
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auto sock = create_client_socket();
if (sock == INVALID_SOCKET) { return false; }
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return read_and_close_socket(sock, req, res);
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}
inline void Client::write_request(Stream &strm, Request &req) {
BufferStream bstrm;
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// Request line
auto path = detail::encode_url(req.path);
bstrm.write_format("%s %s HTTP/1.1\r\n", req.method.c_str(), path.c_str());
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// Headers
if (!req.has_header("Host")) {
if (is_ssl()) {
if (port_ == 443) {
req.set_header("Host", host_.c_str());
} else {
req.set_header("Host", host_and_port_.c_str());
}
} else {
if (port_ == 80) {
req.set_header("Host", host_.c_str());
} else {
req.set_header("Host", host_and_port_.c_str());
}
}
}
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if (!req.has_header("Accept")) { req.set_header("Accept", "*/*"); }
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if (!req.has_header("User-Agent")) {
req.set_header("User-Agent", "cpp-httplib/0.2");
}
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// TODO: Support KeepAlive connection
// if (!req.has_header("Connection")) {
req.set_header("Connection", "close");
// }
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if (req.body.empty()) {
if (req.method == "POST" || req.method == "PUT" || req.method == "PATCH") {
req.set_header("Content-Length", "0");
}
} else {
if (!req.has_header("Content-Type")) {
req.set_header("Content-Type", "text/plain");
}
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if (!req.has_header("Content-Length")) {
auto length = std::to_string(req.body.size());
req.set_header("Content-Length", length.c_str());
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}
}
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detail::write_headers(bstrm, req);
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// Body
if (!req.body.empty()) { bstrm.write(req.body.c_str(), req.body.size()); }
// Flush buffer
auto &data = bstrm.get_buffer();
strm.write(data.data(), data.size());
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}
inline bool Client::process_request(Stream &strm, Request &req, Response &res,
bool &connection_close) {
// Send request
write_request(strm, req);
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// Receive response and headers
if (!read_response_line(strm, res) ||
!detail::read_headers(strm, res.headers)) {
return false;
}
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if (res.get_header_value("Connection") == "close" ||
res.version == "HTTP/1.0") {
connection_close = true;
}
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// Body
if (req.method != "HEAD") {
bool exceed_payload_max_length = false;
if (!detail::read_content(strm, res, std::numeric_limits<uint64_t>::max(),
exceed_payload_max_length, req.progress)) {
return false;
}
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if (res.get_header_value("Content-Encoding") == "gzip") {
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#ifdef CPPHTTPLIB_ZLIB_SUPPORT
detail::decompress(res.body);
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#else
return false;
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#endif
}
}
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return true;
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}
inline bool Client::read_and_close_socket(socket_t sock, Request &req,
Response &res) {
return detail::read_and_close_socket(
sock, 0,
[&](Stream &strm, bool /*last_connection*/, bool &connection_close) {
return process_request(strm, req, res, connection_close);
});
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}
inline bool Client::is_ssl() const { return false; }
inline std::shared_ptr<Response> Client::Get(const char *path,
Progress progress) {
return Get(path, Headers(), progress);
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}
inline std::shared_ptr<Response>
Client::Get(const char *path, const Headers &headers, Progress progress) {
Request req;
req.method = "GET";
req.path = path;
req.headers = headers;
req.progress = progress;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
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}
inline std::shared_ptr<Response> Client::Head(const char *path) {
return Head(path, Headers());
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}
inline std::shared_ptr<Response> Client::Head(const char *path,
const Headers &headers) {
Request req;
req.method = "HEAD";
req.headers = headers;
req.path = path;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
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}
inline std::shared_ptr<Response> Client::Post(const char *path,
const std::string &body,
const char *content_type) {
return Post(path, Headers(), body, content_type);
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}
inline std::shared_ptr<Response> Client::Post(const char *path,
const Headers &headers,
const std::string &body,
const char *content_type) {
Request req;
req.method = "POST";
req.headers = headers;
req.path = path;
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req.headers.emplace("Content-Type", content_type);
req.body = body;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
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}
inline std::shared_ptr<Response> Client::Post(const char *path,
const Params &params) {
return Post(path, Headers(), params);
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}
inline std::shared_ptr<Response>
Client::Post(const char *path, const Headers &headers, const Params &params) {
std::string query;
for (auto it = params.begin(); it != params.end(); ++it) {
if (it != params.begin()) { query += "&"; }
query += it->first;
query += "=";
query += it->second;
}
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return Post(path, headers, query, "application/x-www-form-urlencoded");
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}
inline std::shared_ptr<Response> Client::Put(const char *path,
const std::string &body,
const char *content_type) {
return Put(path, Headers(), body, content_type);
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}
inline std::shared_ptr<Response> Client::Put(const char *path,
const Headers &headers,
const std::string &body,
const char *content_type) {
Request req;
req.method = "PUT";
req.headers = headers;
req.path = path;
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req.headers.emplace("Content-Type", content_type);
req.body = body;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
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}
inline std::shared_ptr<Response> Client::Patch(const char *path,
const std::string &body,
const char *content_type) {
return Patch(path, Headers(), body, content_type);
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}
inline std::shared_ptr<Response> Client::Patch(const char *path,
const Headers &headers,
const std::string &body,
const char *content_type) {
Request req;
req.method = "PATCH";
req.headers = headers;
req.path = path;
req.headers.emplace("Content-Type", content_type);
req.body = body;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
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}
inline std::shared_ptr<Response> Client::Delete(const char *path) {
return Delete(path, Headers());
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}
inline std::shared_ptr<Response> Client::Delete(const char *path,
const Headers &headers) {
Request req;
req.method = "DELETE";
req.path = path;
req.headers = headers;
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auto res = std::make_shared<Response>();
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return send(req, *res) ? res : nullptr;
}
inline std::shared_ptr<Response> Client::Options(const char *path) {
return Options(path, Headers());
}
inline std::shared_ptr<Response> Client::Options(const char *path,
const Headers &headers) {
Request req;
req.method = "OPTIONS";
req.path = path;
req.headers = headers;
auto res = std::make_shared<Response>();
return send(req, *res) ? res : nullptr;
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}
/*
* SSL Implementation
*/
#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
namespace detail {
template <typename U, typename V, typename T>
inline bool
read_and_close_socket_ssl(socket_t sock, size_t keep_alive_max_count,
// TODO: OpenSSL 1.0.2 occasionally crashes...
// The upcoming 1.1.0 is going to be thread safe.
SSL_CTX *ctx, std::mutex &ctx_mutex,
U SSL_connect_or_accept, V setup, T callback) {
SSL *ssl = nullptr;
{
std::lock_guard<std::mutex> guard(ctx_mutex);
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ssl = SSL_new(ctx);
if (!ssl) { return false; }
}
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auto bio = BIO_new_socket(sock, BIO_NOCLOSE);
SSL_set_bio(ssl, bio, bio);
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setup(ssl);
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SSL_connect_or_accept(ssl);
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bool ret = false;
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if (keep_alive_max_count > 0) {
auto count = keep_alive_max_count;
while (count > 0 &&
detail::select_read(sock, CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND,
CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND) > 0) {
SSLSocketStream strm(sock, ssl);
auto last_connection = count == 1;
auto connection_close = false;
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ret = callback(strm, last_connection, connection_close);
if (!ret || connection_close) { break; }
count--;
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}
} else {
SSLSocketStream strm(sock, ssl);
auto dummy_connection_close = false;
ret = callback(strm, true, dummy_connection_close);
}
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SSL_shutdown(ssl);
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{
std::lock_guard<std::mutex> guard(ctx_mutex);
SSL_free(ssl);
}
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close_socket(sock);
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return ret;
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}
class SSLInit {
public:
SSLInit() {
SSL_load_error_strings();
SSL_library_init();
}
~SSLInit() { ERR_free_strings(); }
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};
static SSLInit sslinit_;
} // namespace detail
// SSL socket stream implementation
inline SSLSocketStream::SSLSocketStream(socket_t sock, SSL *ssl)
: sock_(sock), ssl_(ssl) {}
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inline SSLSocketStream::~SSLSocketStream() {}
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inline int SSLSocketStream::read(char *ptr, size_t size) {
return SSL_read(ssl_, ptr, size);
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}
inline int SSLSocketStream::write(const char *ptr, size_t size) {
return SSL_write(ssl_, ptr, size);
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}
inline int SSLSocketStream::write(const char *ptr) {
return write(ptr, strlen(ptr));
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}
inline std::string SSLSocketStream::get_remote_addr() const {
return detail::get_remote_addr(sock_);
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}
// SSL HTTP server implementation
inline SSLServer::SSLServer(const char *cert_path,
const char *private_key_path) {
ctx_ = SSL_CTX_new(SSLv23_server_method());
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if (ctx_) {
SSL_CTX_set_options(ctx_,
SSL_OP_ALL | SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
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SSL_OP_NO_COMPRESSION |
SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);
// auto ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
// SSL_CTX_set_tmp_ecdh(ctx_, ecdh);
// EC_KEY_free(ecdh);
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if (SSL_CTX_use_certificate_chain_file(ctx_, cert_path) != 1 ||
SSL_CTX_use_PrivateKey_file(ctx_, private_key_path, SSL_FILETYPE_PEM) !=
1) {
SSL_CTX_free(ctx_);
ctx_ = nullptr;
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}
}
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}
inline SSLServer::~SSLServer() {
if (ctx_) { SSL_CTX_free(ctx_); }
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}
inline bool SSLServer::is_valid() const { return ctx_; }
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inline bool SSLServer::read_and_close_socket(socket_t sock) {
return detail::read_and_close_socket_ssl(
sock, keep_alive_max_count_, ctx_, ctx_mutex_, SSL_accept,
[](SSL * /*ssl*/) {},
[this](Stream &strm, bool last_connection, bool &connection_close) {
return process_request(strm, last_connection, connection_close);
});
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}
// SSL HTTP client implementation
inline SSLClient::SSLClient(const char *host, int port, time_t timeout_sec)
: Client(host, port, timeout_sec) {
ctx_ = SSL_CTX_new(SSLv23_client_method());
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}
inline SSLClient::~SSLClient() {
if (ctx_) { SSL_CTX_free(ctx_); }
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}
inline bool SSLClient::is_valid() const { return ctx_; }
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inline bool SSLClient::read_and_close_socket(socket_t sock, Request &req,
Response &res) {
return is_valid() &&
detail::read_and_close_socket_ssl(
sock, 0, ctx_, ctx_mutex_, SSL_connect,
[&](SSL *ssl) { SSL_set_tlsext_host_name(ssl, host_.c_str()); },
[&](Stream &strm, bool /*last_connection*/,
bool &connection_close) {
return process_request(strm, req, res, connection_close);
});
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}
inline bool SSLClient::is_ssl() const { return true; }
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#endif
} // namespace httplib
#endif // CPPHTTPLIB_HTTPLIB_H
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// vim: et ts=4 sw=4 cin cino={1s ff=unix