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suyu/externals/httplib/httplib.h
fearlessTobi 5f30f95e94 Add submodules
2018-10-02 15:30:48 +02:00

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//
// httplib.h
//
// Copyright (c) 2017 Yuji Hirose. All rights reserved.
// MIT License
//
#ifndef _CPPHTTPLIB_HTTPLIB_H_
#define _CPPHTTPLIB_HTTPLIB_H_
#ifdef _WIN32
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif
#ifndef _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_NONSTDC_NO_DEPRECATE
#endif
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf_s
#endif
#ifndef S_ISREG
#define S_ISREG(m) (((m)&S_IFREG)==S_IFREG)
#endif
#ifndef S_ISDIR
#define S_ISDIR(m) (((m)&S_IFDIR)==S_IFDIR)
#endif
#include <io.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#undef min
#undef max
#ifndef strcasecmp
#define strcasecmp _stricmp
#endif
typedef SOCKET socket_t;
#else
#include <pthread.h>
#include <unistd.h>
#include <netdb.h>
#include <cstring>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/select.h>
typedef int socket_t;
#define INVALID_SOCKET (-1)
#endif
#include <fstream>
#include <functional>
#include <map>
#include <memory>
#include <mutex>
#include <regex>
#include <string>
#include <thread>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>
#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
#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
namespace httplib
{
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);
});
}
};
} // namespace detail
enum class HttpVersion { v1_0 = 0, v1_1 };
typedef std::multimap<std::string, std::string, detail::ci> Headers;
template<typename uint64_t, typename... Args>
std::pair<std::string, std::string> make_range_header(uint64_t value, Args... args);
typedef std::multimap<std::string, std::string> Params;
typedef std::smatch Match;
typedef std::function<void (uint64_t current, uint64_t total)> Progress;
struct MultipartFile {
std::string filename;
std::string content_type;
size_t offset = 0;
size_t length = 0;
};
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) 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) const;
bool has_file(const char* key) const;
MultipartFile get_file_value(const char* key) const;
};
struct Response {
std::string version;
int status;
Headers headers;
std::string body;
bool has_header(const char* key) const;
std::string get_header_value(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) {}
};
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() = 0;
template <typename ...Args>
void write_format(const char* fmt, const Args& ...args);
};
class SocketStream : public Stream {
public:
SocketStream(socket_t sock);
virtual ~SocketStream();
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();
private:
socket_t sock_;
};
class Server {
public:
typedef std::function<void (const Request&, Response&)> Handler;
typedef std::function<void (const Request&, const Response&)> Logger;
Server();
virtual ~Server();
virtual bool is_valid() const;
Server& Get(const char* pattern, Handler handler);
Server& Post(const char* pattern, Handler handler);
Server& Put(const char* pattern, Handler handler);
Server& Delete(const char* pattern, Handler handler);
Server& Options(const char* pattern, Handler handler);
bool set_base_dir(const char* path);
void set_error_handler(Handler handler);
void set_logger(Logger logger);
void set_keep_alive_max_count(size_t count);
int bind_to_any_port(const char* host, int socket_flags = 0);
bool listen_after_bind();
bool listen(const char* host, int port, int socket_flags = 0);
bool is_running() const;
void stop();
protected:
bool process_request(Stream& strm, bool last_connection, bool& connection_close);
size_t keep_alive_max_count_;
private:
typedef std::vector<std::pair<std::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 delete_handlers_;
Handlers options_handlers_;
Handler error_handler_;
Logger logger_;
// TODO: Use thread pool...
std::mutex running_threads_mutex_;
int running_threads_;
};
class Client {
public:
Client(
const char* host,
int port = 80,
size_t timeout_sec = 300);
virtual ~Client();
virtual bool is_valid() const;
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);
std::shared_ptr<Response> Head(const char* path);
std::shared_ptr<Response> Head(const char* path, const Headers& headers);
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);
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);
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);
std::shared_ptr<Response> Delete(const char* path);
std::shared_ptr<Response> Delete(const char* path, const Headers& headers);
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);
protected:
bool process_request(Stream& strm, Request& req, Response& res, bool& connection_close);
const std::string host_;
const int port_;
size_t timeout_sec_;
const std::string host_and_port_;
private:
socket_t create_client_socket() const;
bool read_response_line(Stream& strm, Response& res);
void write_request(Stream& strm, Request& req);
virtual bool read_and_close_socket(socket_t sock, Request& req, Response& res);
};
#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
class SSLSocketStream : public Stream {
public:
SSLSocketStream(socket_t sock, SSL* ssl);
virtual ~SSLSocketStream();
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();
private:
socket_t sock_;
SSL* ssl_;
};
class SSLServer : public Server {
public:
SSLServer(
const char* cert_path, const char* private_key_path);
virtual ~SSLServer();
virtual bool is_valid() const;
private:
virtual bool read_and_close_socket(socket_t sock);
SSL_CTX* ctx_;
std::mutex ctx_mutex_;
};
class SSLClient : public Client {
public:
SSLClient(
const char* host,
int port = 80,
size_t timeout_sec = 300);
virtual ~SSLClient();
virtual bool is_valid() const;
private:
virtual bool read_and_close_socket(socket_t sock, Request& req, Response& res);
SSL_CTX* ctx_;
std::mutex ctx_mutex_;
};
#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;
while (e ? (b + i != e) : (b[i] != '\0')) {
if (b[i] == d) {
fn(&b[beg], &b[i]);
beg = i + 1;
}
i++;
}
if (i) {
fn(&b[beg], &b[i]);
}
}
// 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();
}
}
bool getline() {
fixed_buffer_used_size_ = 0;
glowable_buffer_.clear();
for (size_t i = 0; ; i++) {
char byte;
auto n = strm_.read(&byte, 1);
if (n < 0) {
return false;
} else if (n == 0) {
if (i == 0) {
return false;
} else {
break;
}
}
append(byte);
if (byte == '\n') {
break;
}
}
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_;
};
inline int close_socket(socket_t sock)
{
#ifdef _WIN32
return closesocket(sock);
#else
return close(sock);
#endif
}
inline int select_read(socket_t sock, size_t sec, size_t usec)
{
fd_set fds;
FD_ZERO(&fds);
FD_SET(sock, &fds);
timeval tv;
tv.tv_sec = sec;
tv.tv_usec = usec;
return select(sock + 1, &fds, NULL, NULL, &tv);
}
inline bool wait_until_socket_is_ready(socket_t sock, size_t sec, size_t usec)
{
fd_set fdsr;
FD_ZERO(&fdsr);
FD_SET(sock, &fdsr);
auto fdsw = fdsr;
auto fdse = fdsr;
timeval tv;
tv.tv_sec = sec;
tv.tv_usec = usec;
if (select(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;
}
return true;
}
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--;
}
} else {
SocketStream strm(sock);
auto dummy_connection_close = false;
ret = callback(strm, true, dummy_connection_close);
}
close_socket(sock);
return ret;
}
inline int shutdown_socket(socket_t sock)
{
#ifdef _WIN32
return shutdown(sock, SD_BOTH);
#else
return shutdown(sock, SHUT_RDWR);
#endif
}
template <typename Fn>
socket_t create_socket(const char* host, int port, Fn fn, int socket_flags = 0)
{
#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));
#endif
// Get address info
struct addrinfo hints;
struct addrinfo *result;
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;
auto service = std::to_string(port);
if (getaddrinfo(host, service.c_str(), &hints, &result)) {
return INVALID_SOCKET;
}
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;
}
// Make 'reuse address' option available
int yes = 1;
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&yes, sizeof(yes));
// bind or connect
if (fn(sock, *rp)) {
freeaddrinfo(result);
return sock;
}
close_socket(sock);
}
freeaddrinfo(result);
return INVALID_SOCKET;
}
inline void set_nonblocking(socket_t sock, bool nonblocking)
{
#ifdef _WIN32
auto flags = nonblocking ? 1UL : 0UL;
ioctlsocket(sock, FIONBIO, &flags);
#else
auto flags = fcntl(sock, F_GETFL, 0);
fcntl(sock, F_SETFL, nonblocking ? (flags | O_NONBLOCK) : (flags & (~O_NONBLOCK)));
#endif
}
inline bool is_connection_error()
{
#ifdef _WIN32
return WSAGetLastError() != WSAEWOULDBLOCK;
#else
return errno != EINPROGRESS;
#endif
}
inline std::string get_remote_addr(socket_t sock) {
struct sockaddr_storage addr;
socklen_t len = sizeof(addr);
if (!getpeername(sock, (struct sockaddr*)&addr, &len)) {
char ipstr[NI_MAXHOST];
if (!getnameinfo((struct sockaddr*)&addr, len,
ipstr, sizeof(ipstr), nullptr, 0, NI_NUMERICHOST)) {
return ipstr;
}
}
return std::string();
}
inline bool is_file(const std::string& path)
{
struct stat st;
return stat(path.c_str(), &st) >= 0 && S_ISREG(st.st_mode);
}
inline bool is_dir(const std::string& path)
{
struct stat st;
return stat(path.c_str(), &st) >= 0 && S_ISDIR(st.st_mode);
}
inline bool is_valid_path(const std::string& path) {
size_t level = 0;
size_t i = 0;
// Skip slash
while (i < path.size() && path[i] == '/') {
i++;
}
while (i < path.size()) {
// Read component
auto beg = i;
while (i < path.size() && path[i] != '/') {
i++;
}
auto len = i - beg;
assert(len > 0);
if (!path.compare(beg, len, ".")) {
;
} else if (!path.compare(beg, len, "..")) {
if (level == 0) {
return false;
}
level--;
} else {
level++;
}
// 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)
{
std::smatch m;
auto pat = std::regex("\\.([a-zA-Z0-9]+)$");
if (std::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 415: return "Unsupported Media Type";
default:
case 500: return "Internal Server Error";
}
}
inline const char* get_header_value(const Headers& headers, const char* key, const char* def)
{
auto it = headers.find(key);
if (it != headers.end()) {
return it->second.c_str();
}
return def;
}
inline int get_header_value_int(const Headers& headers, const char* key, int def)
{
auto it = headers.find(key);
if (it != headers.end()) {
return std::stoi(it->second);
}
return def;
}
inline bool read_headers(Stream& strm, Headers& headers)
{
static std::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;
}
std::cmatch m;
if (std::regex_match(reader.ptr(), m, re)) {
auto key = std::string(m[1]);
auto val = std::string(m[2]);
headers.emplace(key, val);
}
}
return true;
}
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;
}
r += n;
if (progress) {
progress(r, len);
}
}
return true;
}
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;
}
out += byte;
}
return true;
}
inline bool read_content_chunked(Stream& strm, std::string& out)
{
const auto bufsiz = 16;
char buf[bufsiz];
stream_line_reader reader(strm, buf, bufsiz);
if (!reader.getline()) {
return false;
}
auto chunk_len = std::stoi(reader.ptr(), 0, 16);
while (chunk_len > 0){
std::string chunk;
if (!read_content_with_length(strm, chunk, chunk_len, nullptr)) {
return false;
}
if (!reader.getline()) {
return false;
}
if (strcmp(reader.ptr(), "\r\n")) {
break;
}
out += chunk;
if (!reader.getline()) {
return false;
}
chunk_len = std::stoi(reader.ptr(), 0, 16);
}
if (chunk_len == 0) {
// Reader terminator after chunks
if (!reader.getline() || strcmp(reader.ptr(), "\r\n"))
return false;
}
return true;
}
template <typename T>
bool read_content(Stream& strm, T& x, Progress progress = Progress())
{
auto len = get_header_value_int(x.headers, "Content-Length", 0);
if (len) {
return read_content_with_length(strm, x.body, len, progress);
} else {
const auto& encoding = get_header_value(x.headers, "Transfer-Encoding", "");
if (!strcasecmp(encoding, "chunked")) {
return read_content_chunked(strm, x.body);
} else {
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 += "+"; break;
case '\'': result += "%27"; break;
case ',': result += "%2C"; break;
case ':': result += "%3A"; break;
case ';': result += "%3B"; break;
default:
if (s[i] < 0) {
result += '%';
char hex[4];
size_t len = snprintf(hex, sizeof(hex) - 1, "%02X", (unsigned char)s[i]);
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';
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;
}
inline bool from_hex_to_i(const std::string& s, size_t i, size_t cnt, int& val)
{
if (i >= s.size()) {
return false;
}
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 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];
}
} else {
int val = 0;
if (from_hex_to_i(s, i + 1, 2, val)) {
// 2 digits hex codes
result += val;
i += 2; // '00'
} else {
result += s[i];
}
}
} else if (s[i] == '+') {
result += ' ';
} else {
result += s[i];
}
}
return result;
}
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);
}
});
params.emplace(key, decode_url(val));
});
}
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;
}
boundary = content_type.substr(pos + 9);
return true;
}
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";
static std::regex re_content_type(
"Content-Type: (.*?)", std::regex_constants::icase);
static std::regex re_content_disposition(
"Content-Disposition: form-data; name=\"(.*?)\"(?:; filename=\"(.*?)\")?",
std::regex_constants::icase);
auto dash_boundary = dash + boundary;
auto pos = body.find(dash_boundary);
if (pos != 0) {
return false;
}
pos += dash_boundary.size();
auto next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) {
return false;
}
pos = next_pos + crlf.size();
while (pos < body.size()) {
next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) {
return false;
}
std::string name;
MultipartFile file;
auto header = body.substr(pos, (next_pos - pos));
while (pos != next_pos) {
std::smatch m;
if (std::regex_match(header, m, re_content_type)) {
file.content_type = m[1];
} else if (std::regex_match(header, m, re_content_disposition)) {
name = m[1];
file.filename = m[2];
}
pos = next_pos + crlf.size();
next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) {
return false;
}
header = body.substr(pos, (next_pos - pos));
}
pos = next_pos + crlf.size();
next_pos = body.find(crlf + dash_boundary, pos);
if (next_pos == std::string::npos) {
return false;
}
file.offset = pos;
file.length = next_pos - pos;
pos = next_pos + crlf.size() + dash_boundary.size();
next_pos = body.find(crlf, pos);
if (next_pos == std::string::npos) {
return false;
}
files.emplace(name, file);
pos = next_pos + crlf.size();
}
return true;
}
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;
}
inline void make_range_header_core(std::string&) {}
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) + "-";
}
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...);
}
#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";
}
inline void compress(std::string& content)
{
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
auto ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 31, 8, Z_DEFAULT_STRATEGY);
if (ret != Z_OK) {
return;
}
strm.avail_in = content.size();
strm.next_in = (Bytef *)content.data();
std::string compressed;
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);
}
inline void decompress(std::string& content)
{
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
// 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;
}
strm.avail_in = content.size();
strm.next_in = (Bytef *)content.data();
std::string decompressed;
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);
content.swap(decompressed);
inflateEnd(&strm);
}
#endif
#ifdef _WIN32
class WSInit {
public:
WSInit() {
WSADATA wsaData;
WSAStartup(0x0002, &wsaData);
}
~WSInit() {
WSACleanup();
}
};
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);
}
// Request implementation
inline bool Request::has_header(const char* key) const
{
return headers.find(key) != headers.end();
}
inline std::string Request::get_header_value(const char* key) const
{
return detail::get_header_value(headers, key, "");
}
inline void Request::set_header(const char* key, const char* val)
{
headers.emplace(key, val);
}
inline bool Request::has_param(const char* key) const
{
return params.find(key) != params.end();
}
inline std::string Request::get_param_value(const char* key) const
{
auto it = params.find(key);
if (it != params.end()) {
return it->second;
}
return std::string();
}
inline bool Request::has_file(const char* key) const
{
return files.find(key) != files.end();
}
inline MultipartFile Request::get_file_value(const char* key) const
{
auto it = files.find(key);
if (it != files.end()) {
return it->second;
}
return MultipartFile();
}
// Response implementation
inline bool Response::has_header(const char* key) const
{
return headers.find(key) != headers.end();
}
inline std::string Response::get_header_value(const char* key) const
{
return detail::get_header_value(headers, key, "");
}
inline void Response::set_header(const char* key, const char* val)
{
headers.emplace(key, val);
}
inline void Response::set_redirect(const char* url)
{
set_header("Location", url);
status = 302;
}
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);
}
inline void Response::set_content(const std::string& s, const char* content_type)
{
body = s;
set_header("Content-Type", content_type);
}
// Rstream implementation
template <typename ...Args>
inline void Stream::write_format(const char* fmt, const Args& ...args)
{
const auto bufsiz = 2048;
char buf[bufsiz];
#if defined(_MSC_VER) && _MSC_VER < 1900
auto n = _snprintf_s(buf, bufsiz, bufsiz - 1, fmt, args...);
#else
auto n = snprintf(buf, bufsiz - 1, fmt, args...);
#endif
if (n > 0) {
if (n >= bufsiz - 1) {
std::vector<char> glowable_buf(bufsiz);
while (n >= static_cast<int>(glowable_buf.size() - 1)) {
glowable_buf.resize(glowable_buf.size() * 2);
#if defined(_MSC_VER) && _MSC_VER < 1900
n = _snprintf_s(&glowable_buf[0], glowable_buf.size(), glowable_buf.size() - 1, fmt, args...);
#else
n = snprintf(&glowable_buf[0], glowable_buf.size() - 1, fmt, args...);
#endif
}
write(&glowable_buf[0], n);
} else {
write(buf, n);
}
}
}
// Socket stream implementation
inline SocketStream::SocketStream(socket_t sock): sock_(sock)
{
}
inline SocketStream::~SocketStream()
{
}
inline int SocketStream::read(char* ptr, size_t size)
{
return recv(sock_, ptr, size, 0);
}
inline int SocketStream::write(const char* ptr, size_t size)
{
return send(sock_, ptr, size, 0);
}
inline int SocketStream::write(const char* ptr)
{
return write(ptr, strlen(ptr));
}
inline std::string SocketStream::get_remote_addr() {
return detail::get_remote_addr(sock_);
}
// HTTP server implementation
inline Server::Server()
: keep_alive_max_count_(5)
, is_running_(false)
, svr_sock_(INVALID_SOCKET)
, running_threads_(0)
{
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
}
inline Server::~Server()
{
}
inline Server& Server::Get(const char* pattern, Handler handler)
{
get_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
return *this;
}
inline Server& Server::Post(const char* pattern, Handler handler)
{
post_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
return *this;
}
inline Server& Server::Put(const char* pattern, Handler handler)
{
put_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
return *this;
}
inline Server& Server::Delete(const char* pattern, Handler handler)
{
delete_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
return *this;
}
inline Server& Server::Options(const char* pattern, Handler handler)
{
options_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
return *this;
}
inline bool Server::set_base_dir(const char* path)
{
if (detail::is_dir(path)) {
base_dir_ = path;
return true;
}
return false;
}
inline void Server::set_error_handler(Handler handler)
{
error_handler_ = handler;
}
inline void Server::set_logger(Logger logger)
{
logger_ = logger;
}
inline void Server::set_keep_alive_max_count(size_t count)
{
keep_alive_max_count_ = count;
}
inline int Server::bind_to_any_port(const char* host, int socket_flags)
{
return bind_internal(host, 0, socket_flags);
}
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();
}
inline bool Server::is_running() const
{
return is_running_;
}
inline void Server::stop()
{
if (is_running_) {
assert(svr_sock_ != INVALID_SOCKET);
detail::shutdown_socket(svr_sock_);
detail::close_socket(svr_sock_);
svr_sock_ = INVALID_SOCKET;
}
}
inline bool Server::parse_request_line(const char* s, Request& req)
{
static std::regex re("(GET|HEAD|POST|PUT|DELETE|OPTIONS) (([^?]+)(?:\\?(.+?))?) (HTTP/1\\.[01])\r\n");
std::cmatch m;
if (std::regex_match(s, m, re)) {
req.version = std::string(m[4]);
req.method = std::string(m[1]);
req.target = std::string(m[2]);
req.path = detail::decode_url(m[3]);
// Parse query text
auto len = std::distance(m[4].first, m[4].second);
if (len > 0) {
detail::parse_query_text(m[4], req.params);
}
return true;
}
return false;
}
inline void Server::write_response(Stream& strm, bool last_connection, const Request& req, Response& res)
{
assert(res.status != -1);
if (400 <= res.status && error_handler_) {
error_handler_(req, res);
}
// Response line
strm.write_format("HTTP/1.1 %d %s\r\n",
res.status,
detail::status_message(res.status));
// Headers
if (last_connection ||
req.version == "HTTP/1.0" ||
req.get_header_value("Connection") == "close") {
res.set_header("Connection", "close");
}
if (!res.body.empty()) {
#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");
}
#endif
if (!res.has_header("Content-Type")) {
res.set_header("Content-Type", "text/plain");
}
auto length = std::to_string(res.body.size());
res.set_header("Content-Length", length.c_str());
}
detail::write_headers(strm, res);
// Body
if (!res.body.empty() && req.method != "HEAD") {
strm.write(res.body.c_str(), res.body.size());
}
// Log
if (logger_) {
logger_(req, res);
}
}
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;
if (!path.empty() && path.back() == '/') {
path += "index.html";
}
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;
}
}
return false;
}
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, ai.ai_addrlen)) {
return false;
}
if (::listen(sock, 5)) { // Listen through 5 channels
return false;
}
return true;
}, socket_flags);
}
inline int Server::bind_internal(const char* host, int port, int socket_flags)
{
if (!is_valid()) {
return -1;
}
svr_sock_ = create_server_socket(host, port, socket_flags);
if (svr_sock_ == INVALID_SOCKET) {
return -1;
}
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;
}
}
inline bool Server::listen_internal()
{
auto ret = true;
is_running_ = true;
for (;;) {
auto val = detail::select_read(svr_sock_, 0, 100000);
if (val == 0) { // Timeout
if (svr_sock_ == INVALID_SOCKET) {
// The server socket was closed by 'stop' method.
break;
}
continue;
}
socket_t sock = accept(svr_sock_, NULL, NULL);
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;
}
// TODO: Use thread pool...
std::thread([=]() {
{
std::lock_guard<std::mutex> guard(running_threads_mutex_);
running_threads_++;
}
read_and_close_socket(sock);
{
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;
}
inline bool Server::routing(Request& req, Response& res)
{
if (req.method == "GET" && handle_file_request(req, res)) {
return true;
}
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 == "DELETE") {
return dispatch_request(req, res, delete_handlers_);
} else if (req.method == "OPTIONS") {
return dispatch_request(req, res, options_handlers_);
}
return false;
}
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;
if (std::regex_match(req.path, req.matches, pattern)) {
handler(req, res);
return true;
}
}
return false;
}
inline bool Server::process_request(Stream& strm, bool last_connection, bool& connection_close)
{
const auto bufsiz = 2048;
char buf[bufsiz];
detail::stream_line_reader reader(strm, buf, bufsiz);
// Connection has been closed on client
if (!reader.getline()) {
return false;
}
Request req;
Response res;
res.version = "HTTP/1.1";
// 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;
}
auto ret = true;
if (req.get_header_value("Connection") == "close") {
// ret = false;
connection_close = true;
}
req.set_header("REMOTE_ADDR", strm.get_remote_addr().c_str());
// Body
if (req.method == "POST" || req.method == "PUT") {
if (!detail::read_content(strm, req)) {
res.status = 400;
write_response(strm, last_connection, req, res);
return ret;
}
const auto& content_type = req.get_header_value("Content-Type");
if (req.get_header_value("Content-Encoding") == "gzip") {
#ifdef CPPHTTPLIB_ZLIB_SUPPORT
detail::decompress(req.body);
#else
res.status = 415;
write_response(strm, last_connection, req, res);
return ret;
#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 ret;
}
}
}
if (routing(req, res)) {
if (res.status == -1) {
res.status = 200;
}
} else {
res.status = 404;
}
write_response(strm, last_connection, req, res);
return ret;
}
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);
});
}
// HTTP client implementation
inline Client::Client(
const char* host, int port, size_t timeout_sec)
: host_(host)
, port_(port)
, timeout_sec_(timeout_sec)
, host_and_port_(host_ + ":" + std::to_string(port_))
{
}
inline Client::~Client()
{
}
inline bool Client::is_valid() const
{
return true;
}
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);
auto ret = connect(sock, ai.ai_addr, 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;
}
}
detail::set_nonblocking(sock, false);
return true;
});
}
inline bool Client::read_response_line(Stream& strm, Response& res)
{
const auto bufsiz = 2048;
char buf[bufsiz];
detail::stream_line_reader reader(strm, buf, bufsiz);
if (!reader.getline()) {
return false;
}
const static std::regex re("(HTTP/1\\.[01]) (\\d+?) .+\r\n");
std::cmatch m;
if (std::regex_match(reader.ptr(), m, re)) {
res.version = std::string(m[1]);
res.status = std::stoi(std::string(m[2]));
}
return true;
}
inline bool Client::send(Request& req, Response& res)
{
if (req.path.empty()) {
return false;
}
auto sock = create_client_socket();
if (sock == INVALID_SOCKET) {
return false;
}
return read_and_close_socket(sock, req, res);
}
inline void Client::write_request(Stream& strm, Request& req)
{
auto path = detail::encode_url(req.path);
// Request line
strm.write_format("%s %s HTTP/1.1\r\n",
req.method.c_str(),
path.c_str());
// Headers
req.set_header("Host", host_and_port_.c_str());
if (!req.has_header("Accept")) {
req.set_header("Accept", "*/*");
}
if (!req.has_header("User-Agent")) {
req.set_header("User-Agent", "cpp-httplib/0.2");
}
// TODO: Support KeepAlive connection
// if (!req.has_header("Connection")) {
req.set_header("Connection", "close");
// }
if (!req.body.empty()) {
if (!req.has_header("Content-Type")) {
req.set_header("Content-Type", "text/plain");
}
auto length = std::to_string(req.body.size());
req.set_header("Content-Length", length.c_str());
}
detail::write_headers(strm, req);
// Body
if (!req.body.empty()) {
if (req.get_header_value("Content-Type") == "application/x-www-form-urlencoded") {
auto str = detail::encode_url(req.body);
strm.write(str.c_str(), str.size());
} else {
strm.write(req.body.c_str(), req.body.size());
}
}
}
inline bool Client::process_request(Stream& strm, Request& req, Response& res, bool& connection_close)
{
// Send request
write_request(strm, req);
// Receive response and headers
if (!read_response_line(strm, res) || !detail::read_headers(strm, res.headers)) {
return false;
}
if (res.get_header_value("Connection") == "close" || res.version == "HTTP/1.0") {
connection_close = true;
}
// Body
if (req.method != "HEAD") {
if (!detail::read_content(strm, res, req.progress)) {
return false;
}
if (res.get_header_value("Content-Encoding") == "gzip") {
#ifdef CPPHTTPLIB_ZLIB_SUPPORT
detail::decompress(res.body);
#else
return false;
#endif
}
}
return true;
}
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);
});
}
inline std::shared_ptr<Response> Client::Get(const char* path, Progress progress)
{
return Get(path, Headers(), progress);
}
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;
auto res = std::make_shared<Response>();
return send(req, *res) ? res : nullptr;
}
inline std::shared_ptr<Response> Client::Head(const char* path)
{
return Head(path, Headers());
}
inline std::shared_ptr<Response> Client::Head(const char* path, const Headers& headers)
{
Request req;
req.method = "HEAD";
req.headers = headers;
req.path = path;
auto res = std::make_shared<Response>();
return send(req, *res) ? res : nullptr;
}
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);
}
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;
req.headers.emplace("Content-Type", content_type);
req.body = body;
auto res = std::make_shared<Response>();
return send(req, *res) ? res : nullptr;
}
inline std::shared_ptr<Response> Client::Post(const char* path, const Params& params)
{
return Post(path, Headers(), params);
}
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;
}
return Post(path, headers, query, "application/x-www-form-urlencoded");
}
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);
}
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;
req.headers.emplace("Content-Type", content_type);
req.body = body;
auto res = std::make_shared<Response>();
return send(req, *res) ? res : nullptr;
}
inline std::shared_ptr<Response> Client::Delete(const char* path)
{
return Delete(path, Headers());
}
inline std::shared_ptr<Response> Client::Delete(const char* path, const Headers& headers)
{
Request req;
req.method = "DELETE";
req.path = path;
req.headers = headers;
auto res = std::make_shared<Response>();
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;
}
/*
* 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);
ssl = SSL_new(ctx);
if (!ssl) {
return false;
}
}
auto bio = BIO_new_socket(sock, BIO_NOCLOSE);
SSL_set_bio(ssl, bio, bio);
setup(ssl);
SSL_connect_or_accept(ssl);
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) {
SSLSocketStream strm(sock, ssl);
auto last_connection = count == 1;
auto connection_close = false;
ret = callback(strm, last_connection, connection_close);
if (!ret || connection_close) {
break;
}
count--;
}
} else {
SSLSocketStream strm(sock, ssl);
auto dummy_connection_close = false;
ret = callback(strm, true, dummy_connection_close);
}
SSL_shutdown(ssl);
{
std::lock_guard<std::mutex> guard(ctx_mutex);
SSL_free(ssl);
}
close_socket(sock);
return ret;
}
class SSLInit {
public:
SSLInit() {
SSL_load_error_strings();
SSL_library_init();
}
};
static SSLInit sslinit_;
} // namespace detail
// SSL socket stream implementation
inline SSLSocketStream::SSLSocketStream(socket_t sock, SSL* ssl)
: sock_(sock), ssl_(ssl)
{
}
inline SSLSocketStream::~SSLSocketStream()
{
}
inline int SSLSocketStream::read(char* ptr, size_t size)
{
return SSL_read(ssl_, ptr, size);
}
inline int SSLSocketStream::write(const char* ptr, size_t size)
{
return SSL_write(ssl_, ptr, size);
}
inline int SSLSocketStream::write(const char* ptr)
{
return write(ptr, strlen(ptr));
}
inline std::string SSLSocketStream::get_remote_addr() {
return detail::get_remote_addr(sock_);
}
// SSL HTTP server implementation
inline SSLServer::SSLServer(const char* cert_path, const char* private_key_path)
{
ctx_ = SSL_CTX_new(SSLv23_server_method());
if (ctx_) {
SSL_CTX_set_options(ctx_,
SSL_OP_ALL | SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
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);
if (SSL_CTX_use_certificate_file(ctx_, cert_path, SSL_FILETYPE_PEM) != 1 ||
SSL_CTX_use_PrivateKey_file(ctx_, private_key_path, SSL_FILETYPE_PEM) != 1) {
SSL_CTX_free(ctx_);
ctx_ = nullptr;
}
}
}
inline SSLServer::~SSLServer()
{
if (ctx_) {
SSL_CTX_free(ctx_);
}
}
inline bool SSLServer::is_valid() const
{
return ctx_;
}
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);
});
}
// SSL HTTP client implementation
inline SSLClient::SSLClient(const char* host, int port, size_t timeout_sec)
: Client(host, port, timeout_sec)
{
ctx_ = SSL_CTX_new(SSLv23_client_method());
}
inline SSLClient::~SSLClient()
{
if (ctx_) {
SSL_CTX_free(ctx_);
}
}
inline bool SSLClient::is_valid() const
{
return ctx_;
}
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);
});
}
#endif
} // namespace httplib
#endif
// vim: et ts=4 sw=4 cin cino={1s ff=unix
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