Commits

Lars Viklund committed 695dd5c

Include all the things

Comments (0)

Files changed (5)

 {
 	"listen_port": 24042,
-	"upstream_port": 443,
+	"upstream_protocol" : "http",
+	"upstream_port": 80,
 	"upstream_host": "webdav.swestore.se"
 }
 //    (See accompanying file LICENSE_1_0.txt or copy at
 //          http://www.boost.org/LICENSE_1_0.txt)
 
+#if defined(_MSC_VER)
+#pragma warning(disable: 4996)
+#endif
+
 #include "asio.h"
 #include <json/json.h>
 #include <cstdint>
 #include <fstream>
 #include <iostream>
 
-#include "bnc_server.h"
 #include "upstream_dispatcher.h"
-#include <boost/thread.hpp>
+#include "curl/curl.h"
+#include "mongoose.h"
+
+struct Options
+{
+	Options()
+	{
+		terminate();
+	}
+
+	void add_option(std::string name, std::string value)
+	{
+		_options.emplace_back(name, value);
+		auto& pair = _options.back();
+		_layout.back() = pair.first.c_str();
+		_layout.push_back(pair.second.c_str());
+		terminate();
+	}
+
+	char const** options()
+	{
+		return _layout.data();
+	}
 
-char const* const CONFIG_FILE_NAME = "davbnc.conf";
+private:
+	void terminate()
+	{
+		_layout.push_back(nullptr);
+	}
+
+private:
+	std::list<std::pair<std::string, std::string>> _options;
+	std::vector<char const*> _layout;
+};
+
+namespace upstream
+{
+struct RequestContext
+{
+	mg_connection* conn;
+};
+
+static size_t send_payload_function(char* buf, size_t size, size_t nmemb, void* d)
+{
+	auto* ctx = (RequestContext*)d;
+	auto* info = mg_get_request_info(ctx->conn);
+	auto num_bytes = mg_read(ctx->conn, buf, size*nmemb);
+	MessageBoxA(nullptr, std::string(buf, buf+num_bytes).c_str(), "send_payload", MB_OK);
+	return num_bytes;
+}
+
+static size_t receive_header_function(char* buf, size_t size, size_t nmemb, void* d)
+{
+	auto* ctx = (RequestContext*)d;
+	auto* info = mg_get_request_info(ctx->conn);
+	auto num_bytes = mg_write(ctx->conn, buf, size*nmemb);
+	MessageBoxA(nullptr, std::string(buf, buf+num_bytes).c_str(), "recv_header", MB_OK);
+	return num_bytes;
+}
+
+static size_t receive_payload_function(char* buf, size_t size, size_t nmemb, void* d)
+{
+	auto* ctx = (RequestContext*)d;
+	auto* info = mg_get_request_info(ctx->conn);
+	auto num_bytes = mg_write(ctx->conn, buf, size*nmemb);
+	MessageBoxA(nullptr, std::string(buf, buf+num_bytes).c_str(), "recv_payload", MB_OK);
+	return num_bytes;
+}
+}
+
+enum class Protocol { HTTP, HTTPS };
+static std::string assemble_url(Protocol protocol, std::string hostname, uint16_t port, std::string uri, char const* query)
+{
+	std::ostringstream url_os;
+	if (protocol == Protocol::HTTP) {
+		url_os << "http://" << hostname;
+		if (port != 80) url_os << ":" << port;
+	}
+	else if (protocol == Protocol::HTTPS) {
+		url_os << "https://" << hostname;
+		if (port != 443) url_os << ":" << port;
+	}
+#if 0
+	auto escaped_uri = curl_escape(decoded_uri.c_str(), decoded_uri.size());
+	url_os << escaped_uri;
+	curl_free(escaped_uri);
+#else
+	url_os << uri;
+#endif
+	if (query) {
+		url_os << "?" << query;
+	}
+	return url_os.str();
+}
+
+struct Config
+{
+	uint16_t listen_port;
+	std::string upstream_host;
+	uint16_t upstream_port;
+	Protocol upstream_protocol;
+};
+
+int begin_request_handler(mg_connection* conn)
+{
+	upstream::RequestContext ctx = {conn};
+	auto* info = mg_get_request_info(conn);
+	auto* config = (Config*)info->user_data;
+	auto full_url = assemble_url(config->upstream_protocol, config->upstream_host, config->upstream_port, info->uri, info->query_string);
+
+	CURLcode hr = CURLE_OK;
+	CURL* easy = curl_easy_init();
+	curl_slist* headers = nullptr;
+	for (int i = 0; i < info->num_headers; ++i) {
+		auto& h = info->http_headers[i];
+		std::ostringstream oss;
+		oss << h.name << ": " << h.value;
+		headers = curl_slist_append(headers, oss.str().c_str());
+	}
+	hr = curl_easy_setopt(easy, CURLOPT_READFUNCTION, &upstream::send_payload_function);
+	hr = curl_easy_setopt(easy, CURLOPT_HEADERFUNCTION, &upstream::receive_header_function);
+	hr = curl_easy_setopt(easy, CURLOPT_WRITEFUNCTION, &upstream::receive_payload_function);
+	hr = curl_easy_setopt(easy, CURLOPT_READDATA, &ctx);
+	hr = curl_easy_setopt(easy, CURLOPT_HEADERDATA, &ctx);
+	hr = curl_easy_setopt(easy, CURLOPT_WRITEDATA, &ctx);
+	hr = curl_easy_setopt(easy, CURLOPT_URL, full_url.c_str());
+	hr = curl_easy_setopt(easy, CURLOPT_PROTOCOLS, CURLPROTO_HTTP|CURLPROTO_HTTPS);
+	hr = curl_easy_setopt(easy, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP|CURLPROTO_HTTPS);
+	hr = curl_easy_setopt(easy, CURLOPT_FOLLOWLOCATION, 1);
+	hr = curl_easy_setopt(easy, CURLOPT_SSLVERSION, CURL_SSLVERSION_SSLv3);
+	hr = curl_easy_perform(easy);
+	curl_easy_cleanup(easy);
+	curl_slist_free_all(headers);
+	return 1;
+}
+
+void end_request_handler(mg_connection const* conn, int reply_status_code)
+{
+}
+
+static Protocol guess_protocol(std::string name, uint16_t port)
+{
+	if (stricmp(name.c_str(), "http") == 0) {
+		return Protocol::HTTP;
+	}
+	if (stricmp(name.c_str(), "https") == 0) {
+		return Protocol::HTTPS;
+	}
+	if (name.empty()) {
+		switch(port) {
+		case 80:
+		case 1080:
+		case 8080:
+			return Protocol::HTTP;
+		case 443:
+		case 1443:
+			return Protocol::HTTPS;
+		}
+	}
+	return Protocol::HTTPS;
+}
 
 int main()
 {
+	char const* const CONFIG_FILE_NAME = "davbnc.conf";
 	Json::Value root;
 	Json::Reader reader;
 	std::ifstream config_stream(CONFIG_FILE_NAME);
 		std::cerr << "Invalid configuration file \"davbnc.conf\"\n";
 		return EXIT_FAILURE;
 	}
-	auto listen_port = (uint16_t)root["listen_port"].asUInt();
-	auto upstream_host = root["upstream_host"].asString();
-	auto upstream_port = (uint16_t)root["upstream_port"].asUInt();
+	Config config = {};
+	config.listen_port = (uint16_t)root["listen_port"].asUInt();
+	config.upstream_host = root["upstream_host"].asString();
+	config.upstream_port = (uint16_t)root.get("upstream_port", 443).asUInt();
+	auto proto_string = root["upstream_protocol"].asString();
+	config.upstream_protocol = guess_protocol(proto_string, config.upstream_port);
+
+	Options options;
+	options.add_option("listening_ports", "127.0.0.1:" + std::to_string(config.listen_port));
+
+	mg_callbacks callbacks = {};
+	callbacks.begin_request = &begin_request_handler;
+	callbacks.end_request = &end_request_handler;
 
 	upstream::start_dispatcher();
-	upstream::make_test_request();
-	ba::io_service io;
-	auto* work = new ba::io_service::work(io);
-	boost::thread io_thread(boost::bind(&ba::io_service::run, &io));
-	{
-		auto server = boost::shared_ptr<BNCServer>(new BNCServer(io, listen_port, upstream_host, upstream_port));
-		server->start();
-	}
-	delete work;
-	io_thread.join();
+	auto* ctx = mg_start(&callbacks, &config, options.options());
+	MessageBoxA(nullptr, "Listening.", "davbnc", MB_OK);
+	mg_stop(ctx);
 	upstream::stop_dispatcher();
 }
+// Copyright (c) 2004-2013 Sergey Lyubka
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if defined(_WIN32)
+#if !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005
+#endif
+#else
+#ifdef __linux__
+#define _XOPEN_SOURCE 600     // For flockfile() on Linux
+#endif
+#define _LARGEFILE_SOURCE     // Enable 64-bit file offsets
+#define __STDC_FORMAT_MACROS  // <inttypes.h> wants this for C++
+#define __STDC_LIMIT_MACROS   // C++ wants that for INT64_MAX
+#endif
+
+#if defined (_MSC_VER)
+// conditional expression is constant: introduced by FD_SET(..)
+#pragma warning (disable : 4127)
+// non-constant aggregate initializer: issued due to missing C99 support
+#pragma warning (disable : 4204)
+#endif
+
+// Disable WIN32_LEAN_AND_MEAN.
+// This makes windows.h always include winsock2.h
+#ifdef WIN32_LEAN_AND_MEAN
+#undef WIN32_LEAN_AND_MEAN
+#endif
+
+#if defined(__SYMBIAN32__)
+#define NO_SSL // SSL is not supported
+#define NO_CGI // CGI is not supported
+#define PATH_MAX FILENAME_MAX
+#endif // __SYMBIAN32__
+
+#ifndef _WIN32_WCE // Some ANSI #includes are not available on Windows CE
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <signal.h>
+#include <fcntl.h>
+#endif // !_WIN32_WCE
+
+#include <time.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#if defined(_WIN32) && !defined(__SYMBIAN32__) // Windows specific
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x0400 // To make it link in VS2005
+#include <windows.h>
+
+#ifndef PATH_MAX
+#define PATH_MAX MAX_PATH
+#endif
+
+#ifndef _WIN32_WCE
+#include <process.h>
+#include <direct.h>
+#include <io.h>
+#else // _WIN32_WCE
+#define NO_CGI // WinCE has no pipes
+
+typedef long off_t;
+
+#define errno   GetLastError()
+#define strerror(x)  _ultoa(x, (char *) _alloca(sizeof(x) *3 ), 10)
+#endif // _WIN32_WCE
+
+#define MAKEUQUAD(lo, hi) ((uint64_t)(((uint32_t)(lo)) | \
+      ((uint64_t)((uint32_t)(hi))) << 32))
+#define RATE_DIFF 10000000 // 100 nsecs
+#define EPOCH_DIFF MAKEUQUAD(0xd53e8000, 0x019db1de)
+#define SYS2UNIX_TIME(lo, hi) \
+  (time_t) ((MAKEUQUAD((lo), (hi)) - EPOCH_DIFF) / RATE_DIFF)
+
+// Visual Studio 6 does not know __func__ or __FUNCTION__
+// The rest of MS compilers use __FUNCTION__, not C99 __func__
+// Also use _strtoui64 on modern M$ compilers
+#if defined(_MSC_VER) && _MSC_VER < 1300
+#define STRX(x) #x
+#define STR(x) STRX(x)
+#define __func__ __FILE__ ":" STR(__LINE__)
+#define strtoull(x, y, z) strtoul(x, y, z)
+#define strtoll(x, y, z) strtol(x, y, z)
+#else
+#define __func__  __FUNCTION__
+#define strtoull(x, y, z) _strtoui64(x, y, z)
+#define strtoll(x, y, z) _strtoi64(x, y, z)
+#endif // _MSC_VER
+
+#define ERRNO   GetLastError()
+#define NO_SOCKLEN_T
+#define SSL_LIB   "ssleay32.dll"
+#define CRYPTO_LIB  "libeay32.dll"
+#define O_NONBLOCK  0
+#if !defined(EWOULDBLOCK)
+#define EWOULDBLOCK  WSAEWOULDBLOCK
+#endif // !EWOULDBLOCK
+#define _POSIX_
+#define INT64_FMT  "I64d"
+
+#define WINCDECL __cdecl
+#define SHUT_WR 1
+#define snprintf _snprintf
+#define vsnprintf _vsnprintf
+#define mg_sleep(x) Sleep(x)
+
+#define pipe(x) _pipe(x, MG_BUF_LEN, _O_BINARY)
+#ifndef popen
+#define popen(x, y) _popen(x, y)
+#endif
+#ifndef pclose
+#define pclose(x) _pclose(x)
+#endif
+#define close(x) _close(x)
+#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y))
+#define RTLD_LAZY  0
+#define fseeko(x, y, z) _lseeki64(_fileno(x), (y), (z))
+#define fdopen(x, y) _fdopen((x), (y))
+#define write(x, y, z) _write((x), (y), (unsigned) z)
+#define read(x, y, z) _read((x), (y), (unsigned) z)
+#define flockfile(x) EnterCriticalSection(&global_log_file_lock)
+#define funlockfile(x) LeaveCriticalSection(&global_log_file_lock)
+#define sleep(x) Sleep((x) * 1000)
+
+#if !defined(va_copy)
+#define va_copy(x, y) x = y
+#endif // !va_copy MINGW #defines va_copy
+
+#if !defined(fileno)
+#define fileno(x) _fileno(x)
+#endif // !fileno MINGW #defines fileno
+
+typedef HANDLE pthread_mutex_t;
+typedef struct {HANDLE signal, broadcast;} pthread_cond_t;
+typedef DWORD pthread_t;
+#define pid_t HANDLE // MINGW typedefs pid_t to int. Using #define here.
+
+static int pthread_mutex_lock(pthread_mutex_t *);
+static int pthread_mutex_unlock(pthread_mutex_t *);
+static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len);
+struct file;
+static char *mg_fgets(char *buf, size_t size, struct file *filep, char **p);
+
+#if defined(HAVE_STDINT)
+#include <stdint.h>
+#else
+typedef unsigned int  uint32_t;
+typedef unsigned short  uint16_t;
+typedef unsigned __int64 uint64_t;
+typedef __int64   int64_t;
+#define INT64_MAX  9223372036854775807
+#endif // HAVE_STDINT
+
+// POSIX dirent interface
+struct dirent {
+  char d_name[PATH_MAX];
+};
+
+typedef struct DIR {
+  HANDLE   handle;
+  WIN32_FIND_DATAW info;
+  struct dirent  result;
+} DIR;
+
+#ifndef HAVE_POLL
+struct pollfd {
+  int fd;
+  short events;
+  short revents;
+};
+#define POLLIN 1
+#endif
+
+
+// Mark required libraries
+#ifdef _MSC_VER
+#pragma comment(lib, "Ws2_32.lib")
+#endif
+
+#else    // UNIX  specific
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <sys/poll.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/time.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <netdb.h>
+
+#include <pwd.h>
+#include <unistd.h>
+#include <dirent.h>
+#if !defined(NO_SSL_DL) && !defined(NO_SSL)
+#include <dlfcn.h>
+#endif
+#include <pthread.h>
+#if defined(__MACH__)
+#define SSL_LIB   "libssl.dylib"
+#define CRYPTO_LIB  "libcrypto.dylib"
+#else
+#if !defined(SSL_LIB)
+#define SSL_LIB   "libssl.so"
+#endif
+#if !defined(CRYPTO_LIB)
+#define CRYPTO_LIB  "libcrypto.so"
+#endif
+#endif
+#ifndef O_BINARY
+#define O_BINARY  0
+#endif // O_BINARY
+#define closesocket(a) close(a)
+#define mg_mkdir(x, y) mkdir(x, y)
+#define mg_remove(x) remove(x)
+#define mg_sleep(x) usleep((x) * 1000)
+#define ERRNO errno
+#define INVALID_SOCKET (-1)
+#define INT64_FMT PRId64
+typedef int SOCKET;
+#define WINCDECL
+
+#endif // End of Windows and UNIX specific includes
+
+#include "mongoose.h"
+
+#define MONGOOSE_VERSION "3.8"
+#define PASSWORDS_FILE_NAME ".htpasswd"
+#define CGI_ENVIRONMENT_SIZE 4096
+#define MAX_CGI_ENVIR_VARS 64
+#define MG_BUF_LEN 8192
+#define MAX_REQUEST_SIZE 16384
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
+
+#ifdef _WIN32
+static CRITICAL_SECTION global_log_file_lock;
+static pthread_t pthread_self(void) {
+  return GetCurrentThreadId();
+}
+#endif // _WIN32
+
+#ifdef DEBUG_TRACE
+#undef DEBUG_TRACE
+#define DEBUG_TRACE(x)
+#else
+#if defined(DEBUG)
+#define DEBUG_TRACE(x) do { \
+  flockfile(stdout); \
+  printf("*** %lu.%p.%s.%d: ", \
+         (unsigned long) time(NULL), (void *) pthread_self(), \
+         __func__, __LINE__); \
+  printf x; \
+  putchar('\n'); \
+  fflush(stdout); \
+  funlockfile(stdout); \
+} while (0)
+#else
+#define DEBUG_TRACE(x)
+#endif // DEBUG
+#endif // DEBUG_TRACE
+
+// Darwin prior to 7.0 and Win32 do not have socklen_t
+#ifdef NO_SOCKLEN_T
+typedef int socklen_t;
+#endif // NO_SOCKLEN_T
+#define _DARWIN_UNLIMITED_SELECT
+
+#if !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
+
+#if !defined(SOMAXCONN)
+#define SOMAXCONN 100
+#endif
+
+#if !defined(PATH_MAX)
+#define PATH_MAX 4096
+#endif
+
+static const char *http_500_error = "Internal Server Error";
+
+#if defined(NO_SSL_DL)
+#include <openssl/ssl.h>
+#else
+// SSL loaded dynamically from DLL.
+// I put the prototypes here to be independent from OpenSSL source installation.
+typedef struct ssl_st SSL;
+typedef struct ssl_method_st SSL_METHOD;
+typedef struct ssl_ctx_st SSL_CTX;
+
+struct ssl_func {
+  const char *name;   // SSL function name
+  void  (*ptr)(void); // Function pointer
+};
+
+#define SSL_free (* (void (*)(SSL *)) ssl_sw[0].ptr)
+#define SSL_accept (* (int (*)(SSL *)) ssl_sw[1].ptr)
+#define SSL_connect (* (int (*)(SSL *)) ssl_sw[2].ptr)
+#define SSL_read (* (int (*)(SSL *, void *, int)) ssl_sw[3].ptr)
+#define SSL_write (* (int (*)(SSL *, const void *,int)) ssl_sw[4].ptr)
+#define SSL_get_error (* (int (*)(SSL *, int)) ssl_sw[5].ptr)
+#define SSL_set_fd (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)
+#define SSL_new (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)
+#define SSL_CTX_new (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)
+#define SSLv23_server_method (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)
+#define SSL_library_init (* (int (*)(void)) ssl_sw[10].ptr)
+#define SSL_CTX_use_PrivateKey_file (* (int (*)(SSL_CTX *, \
+        const char *, int)) ssl_sw[11].ptr)
+#define SSL_CTX_use_certificate_file (* (int (*)(SSL_CTX *, \
+        const char *, int)) ssl_sw[12].ptr)
+#define SSL_CTX_set_default_passwd_cb \
+  (* (void (*)(SSL_CTX *, mg_callback_t)) ssl_sw[13].ptr)
+#define SSL_CTX_free (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)
+#define SSL_load_error_strings (* (void (*)(void)) ssl_sw[15].ptr)
+#define SSL_CTX_use_certificate_chain_file \
+  (* (int (*)(SSL_CTX *, const char *)) ssl_sw[16].ptr)
+#define SSLv23_client_method (* (SSL_METHOD * (*)(void)) ssl_sw[17].ptr)
+#define SSL_pending (* (int (*)(SSL *)) ssl_sw[18].ptr)
+#define SSL_CTX_set_verify (* (void (*)(SSL_CTX *, int, int)) ssl_sw[19].ptr)
+#define SSL_shutdown (* (int (*)(SSL *)) ssl_sw[20].ptr)
+
+#define CRYPTO_num_locks (* (int (*)(void)) crypto_sw[0].ptr)
+#define CRYPTO_set_locking_callback \
+  (* (void (*)(void (*)(int, int, const char *, int))) crypto_sw[1].ptr)
+#define CRYPTO_set_id_callback \
+  (* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)
+#define ERR_get_error (* (unsigned long (*)(void)) crypto_sw[3].ptr)
+#define ERR_error_string (* (char * (*)(unsigned long,char *)) crypto_sw[4].ptr)
+
+// set_ssl_option() function updates this array.
+// It loads SSL library dynamically and changes NULLs to the actual addresses
+// of respective functions. The macros above (like SSL_connect()) are really
+// just calling these functions indirectly via the pointer.
+static struct ssl_func ssl_sw[] = {
+  {"SSL_free",   NULL},
+  {"SSL_accept",   NULL},
+  {"SSL_connect",   NULL},
+  {"SSL_read",   NULL},
+  {"SSL_write",   NULL},
+  {"SSL_get_error",  NULL},
+  {"SSL_set_fd",   NULL},
+  {"SSL_new",   NULL},
+  {"SSL_CTX_new",   NULL},
+  {"SSLv23_server_method", NULL},
+  {"SSL_library_init",  NULL},
+  {"SSL_CTX_use_PrivateKey_file", NULL},
+  {"SSL_CTX_use_certificate_file",NULL},
+  {"SSL_CTX_set_default_passwd_cb",NULL},
+  {"SSL_CTX_free",  NULL},
+  {"SSL_load_error_strings", NULL},
+  {"SSL_CTX_use_certificate_chain_file", NULL},
+  {"SSLv23_client_method", NULL},
+  {"SSL_pending", NULL},
+  {"SSL_CTX_set_verify", NULL},
+  {"SSL_shutdown",   NULL},
+  {NULL,    NULL}
+};
+
+// Similar array as ssl_sw. These functions could be located in different lib.
+#if !defined(NO_SSL)
+static struct ssl_func crypto_sw[] = {
+  {"CRYPTO_num_locks",  NULL},
+  {"CRYPTO_set_locking_callback", NULL},
+  {"CRYPTO_set_id_callback", NULL},
+  {"ERR_get_error",  NULL},
+  {"ERR_error_string", NULL},
+  {NULL,    NULL}
+};
+#endif // NO_SSL
+#endif // NO_SSL_DL
+
+static const char *month_names[] = {
+  "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+// Unified socket address. For IPv6 support, add IPv6 address structure
+// in the union u.
+union usa {
+  struct sockaddr sa;
+  struct sockaddr_in sin;
+#if defined(USE_IPV6)
+  struct sockaddr_in6 sin6;
+#endif
+};
+
+// Describes a string (chunk of memory).
+struct vec {
+  const char *ptr;
+  size_t len;
+};
+
+struct file {
+  int is_directory;
+  time_t modification_time;
+  int64_t size;
+  FILE *fp;
+  const char *membuf;   // Non-NULL if file data is in memory
+  // set to 1 if the content is gzipped
+  // in which case we need a content-encoding: gzip header
+  int gzipped;
+};
+#define STRUCT_FILE_INITIALIZER {0, 0, 0, NULL, NULL, 0}
+
+// Describes listening socket, or socket which was accept()-ed by the master
+// thread and queued for future handling by the worker thread.
+struct socket {
+  SOCKET sock;          // Listening socket
+  union usa lsa;        // Local socket address
+  union usa rsa;        // Remote socket address
+  unsigned is_ssl:1;    // Is port SSL-ed
+  unsigned ssl_redir:1; // Is port supposed to redirect everything to SSL port
+};
+
+// NOTE(lsm): this enum shoulds be in sync with the config_options below.
+enum {
+  CGI_EXTENSIONS, CGI_ENVIRONMENT, PUT_DELETE_PASSWORDS_FILE, CGI_INTERPRETER,
+  PROTECT_URI, AUTHENTICATION_DOMAIN, SSI_EXTENSIONS, THROTTLE,
+  ACCESS_LOG_FILE, ENABLE_DIRECTORY_LISTING, ERROR_LOG_FILE,
+  GLOBAL_PASSWORDS_FILE, INDEX_FILES, ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST,
+  EXTRA_MIME_TYPES, LISTENING_PORTS, DOCUMENT_ROOT, SSL_CERTIFICATE,
+  NUM_THREADS, RUN_AS_USER, REWRITE, HIDE_FILES, REQUEST_TIMEOUT,
+  NUM_OPTIONS
+};
+
+static const char *config_options[] = {
+  "cgi_pattern", "**.cgi$|**.pl$|**.php$",
+  "cgi_environment", NULL,
+  "put_delete_auth_file", NULL,
+  "cgi_interpreter", NULL,
+  "protect_uri", NULL,
+  "authentication_domain", "mydomain.com",
+  "ssi_pattern", "**.shtml$|**.shtm$",
+  "throttle", NULL,
+  "access_log_file", NULL,
+  "enable_directory_listing", "yes",
+  "error_log_file", NULL,
+  "global_auth_file", NULL,
+  "index_files",
+    "index.html,index.htm,index.cgi,index.shtml,index.php,index.lp",
+  "enable_keep_alive", "no",
+  "access_control_list", NULL,
+  "extra_mime_types", NULL,
+  "listening_ports", "8080",
+  "document_root",  ".",
+  "ssl_certificate", NULL,
+  "num_threads", "50",
+  "run_as_user", NULL,
+  "url_rewrite_patterns", NULL,
+  "hide_files_patterns", NULL,
+  "request_timeout_ms", "30000",
+  NULL
+};
+
+struct mg_context {
+  volatile int stop_flag;         // Should we stop event loop
+  SSL_CTX *ssl_ctx;               // SSL context
+  char *config[NUM_OPTIONS];      // Mongoose configuration parameters
+  struct mg_callbacks callbacks;  // User-defined callback function
+  void *user_data;                // User-defined data
+
+  struct socket *listening_sockets;
+  int num_listening_sockets;
+
+  volatile int num_threads;  // Number of threads
+  pthread_mutex_t mutex;     // Protects (max|num)_threads
+  pthread_cond_t  cond;      // Condvar for tracking workers terminations
+
+  struct socket queue[20];   // Accepted sockets
+  volatile int sq_head;      // Head of the socket queue
+  volatile int sq_tail;      // Tail of the socket queue
+  pthread_cond_t sq_full;    // Signaled when socket is produced
+  pthread_cond_t sq_empty;   // Signaled when socket is consumed
+};
+
+struct mg_connection {
+  struct mg_request_info request_info;
+  struct mg_context *ctx;
+  SSL *ssl;                   // SSL descriptor
+  SSL_CTX *client_ssl_ctx;    // SSL context for client connections
+  struct socket client;       // Connected client
+  time_t birth_time;          // Time when request was received
+  int64_t num_bytes_sent;     // Total bytes sent to client
+  int64_t content_len;        // Content-Length header value
+  int64_t consumed_content;   // How many bytes of content have been read
+  char *buf;                  // Buffer for received data
+  char *path_info;            // PATH_INFO part of the URL
+  int must_close;             // 1 if connection must be closed
+  int buf_size;               // Buffer size
+  int request_len;            // Size of the request + headers in a buffer
+  int data_len;               // Total size of data in a buffer
+  int status_code;            // HTTP reply status code, e.g. 200
+  int throttle;               // Throttling, bytes/sec. <= 0 means no throttle
+  time_t last_throttle_time;  // Last time throttled data was sent
+  int64_t last_throttle_bytes;// Bytes sent this second
+};
+
+// Directory entry
+struct de {
+  struct mg_connection *conn;
+  char *file_name;
+  struct file file;
+};
+
+const char **mg_get_valid_option_names(void) {
+  return config_options;
+}
+
+static int is_file_in_memory(struct mg_connection *conn, const char *path,
+                             struct file *filep) {
+  size_t size = 0;
+  if ((filep->membuf = conn->ctx->callbacks.open_file == NULL ? NULL :
+       conn->ctx->callbacks.open_file(conn, path, &size)) != NULL) {
+    // NOTE: override filep->size only on success. Otherwise, it might break
+    // constructs like if (!mg_stat() || !mg_fopen()) ...
+    filep->size = size;
+  }
+  return filep->membuf != NULL;
+}
+
+static int is_file_opened(const struct file *filep) {
+  return filep->membuf != NULL || filep->fp != NULL;
+}
+
+static int mg_fopen(struct mg_connection *conn, const char *path,
+                    const char *mode, struct file *filep) {
+  if (!is_file_in_memory(conn, path, filep)) {
+#ifdef _WIN32
+    wchar_t wbuf[PATH_MAX], wmode[20];
+    to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
+    MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode));
+    filep->fp = _wfopen(wbuf, wmode);
+#else
+    filep->fp = fopen(path, mode);
+#endif
+  }
+
+  return is_file_opened(filep);
+}
+
+static void mg_fclose(struct file *filep) {
+  if (filep != NULL && filep->fp != NULL) {
+    fclose(filep->fp);
+  }
+}
+
+static int get_option_index(const char *name) {
+  int i;
+
+  for (i = 0; config_options[i * 2] != NULL; i++) {
+    if (strcmp(config_options[i * 2], name) == 0) {
+      return i;
+    }
+  }
+  return -1;
+}
+
+const char *mg_get_option(const struct mg_context *ctx, const char *name) {
+  int i;
+  if ((i = get_option_index(name)) == -1) {
+    return NULL;
+  } else if (ctx->config[i] == NULL) {
+    return "";
+  } else {
+    return ctx->config[i];
+  }
+}
+
+static void sockaddr_to_string(char *buf, size_t len,
+                                     const union usa *usa) {
+  buf[0] = '\0';
+#if defined(USE_IPV6)
+  inet_ntop(usa->sa.sa_family, usa->sa.sa_family == AF_INET ?
+            (void *) &usa->sin.sin_addr :
+            (void *) &usa->sin6.sin6_addr, buf, len);
+#elif defined(_WIN32)
+  // Only Windoze Vista (and newer) have inet_ntop()
+  strncpy(buf, inet_ntoa(usa->sin.sin_addr), len);
+#else
+  inet_ntop(usa->sa.sa_family, (void *) &usa->sin.sin_addr, buf, len);
+#endif
+}
+
+static void cry(struct mg_connection *conn,
+                PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);
+
+// Print error message to the opened error log stream.
+static void cry(struct mg_connection *conn, const char *fmt, ...) {
+  char buf[MG_BUF_LEN], src_addr[20];
+  va_list ap;
+  FILE *fp;
+  time_t timestamp;
+
+  va_start(ap, fmt);
+  (void) vsnprintf(buf, sizeof(buf), fmt, ap);
+  va_end(ap);
+
+  // Do not lock when getting the callback value, here and below.
+  // I suppose this is fine, since function cannot disappear in the
+  // same way string option can.
+  if (conn->ctx->callbacks.log_message == NULL ||
+      conn->ctx->callbacks.log_message(conn, buf) == 0) {
+    fp = conn->ctx == NULL || conn->ctx->config[ERROR_LOG_FILE] == NULL ? NULL :
+      fopen(conn->ctx->config[ERROR_LOG_FILE], "a+");
+
+    if (fp != NULL) {
+      flockfile(fp);
+      timestamp = time(NULL);
+
+      sockaddr_to_string(src_addr, sizeof(src_addr), &conn->client.rsa);
+      fprintf(fp, "[%010lu] [error] [client %s] ", (unsigned long) timestamp,
+              src_addr);
+
+      if (conn->request_info.request_method != NULL) {
+        fprintf(fp, "%s %s: ", conn->request_info.request_method,
+                conn->request_info.uri);
+      }
+
+      fprintf(fp, "%s", buf);
+      fputc('\n', fp);
+      funlockfile(fp);
+      fclose(fp);
+    }
+  }
+}
+
+// Return fake connection structure. Used for logging, if connection
+// is not applicable at the moment of logging.
+static struct mg_connection *fc(struct mg_context *ctx) {
+  static struct mg_connection fake_connection;
+  fake_connection.ctx = ctx;
+  return &fake_connection;
+}
+
+const char *mg_version(void) {
+  return MONGOOSE_VERSION;
+}
+
+struct mg_request_info *mg_get_request_info(struct mg_connection *conn) {
+  return &conn->request_info;
+}
+
+static void mg_strlcpy(register char *dst, register const char *src, size_t n) {
+  for (; *src != '\0' && n > 1; n--) {
+    *dst++ = *src++;
+  }
+  *dst = '\0';
+}
+
+static int lowercase(const char *s) {
+  return tolower(* (const unsigned char *) s);
+}
+
+static int mg_strncasecmp(const char *s1, const char *s2, size_t len) {
+  int diff = 0;
+
+  if (len > 0)
+    do {
+      diff = lowercase(s1++) - lowercase(s2++);
+    } while (diff == 0 && s1[-1] != '\0' && --len > 0);
+
+  return diff;
+}
+
+static int mg_strcasecmp(const char *s1, const char *s2) {
+  int diff;
+
+  do {
+    diff = lowercase(s1++) - lowercase(s2++);
+  } while (diff == 0 && s1[-1] != '\0');
+
+  return diff;
+}
+
+static char * mg_strndup(const char *ptr, size_t len) {
+  char *p;
+
+  if ((p = (char *) malloc(len + 1)) != NULL) {
+    mg_strlcpy(p, ptr, len + 1);
+  }
+
+  return p;
+}
+
+static char * mg_strdup(const char *str) {
+  return mg_strndup(str, strlen(str));
+}
+
+static const char *mg_strcasestr(const char *big_str, const char *small_str) {
+  int i, big_len = strlen(big_str), small_len = strlen(small_str);
+
+  for (i = 0; i <= big_len - small_len; i++) {
+    if (mg_strncasecmp(big_str + i, small_str, small_len) == 0) {
+      return big_str + i;
+    }
+  }
+
+  return NULL;
+}
+
+// Like snprintf(), but never returns negative value, or a value
+// that is larger than a supplied buffer.
+// Thanks to Adam Zeldis to pointing snprintf()-caused vulnerability
+// in his audit report.
+static int mg_vsnprintf(struct mg_connection *conn, char *buf, size_t buflen,
+                        const char *fmt, va_list ap) {
+  int n;
+
+  if (buflen == 0)
+    return 0;
+
+  n = vsnprintf(buf, buflen, fmt, ap);
+
+  if (n < 0) {
+    cry(conn, "vsnprintf error");
+    n = 0;
+  } else if (n >= (int) buflen) {
+    cry(conn, "truncating vsnprintf buffer: [%.*s]",
+        n > 200 ? 200 : n, buf);
+    n = (int) buflen - 1;
+  }
+  buf[n] = '\0';
+
+  return n;
+}
+
+static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen,
+                       PRINTF_FORMAT_STRING(const char *fmt), ...)
+  PRINTF_ARGS(4, 5);
+
+static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen,
+                       const char *fmt, ...) {
+  va_list ap;
+  int n;
+
+  va_start(ap, fmt);
+  n = mg_vsnprintf(conn, buf, buflen, fmt, ap);
+  va_end(ap);
+
+  return n;
+}
+
+// Skip the characters until one of the delimiters characters found.
+// 0-terminate resulting word. Skip the delimiter and following whitespaces.
+// Advance pointer to buffer to the next word. Return found 0-terminated word.
+// Delimiters can be quoted with quotechar.
+static char *skip_quoted(char **buf, const char *delimiters,
+                         const char *whitespace, char quotechar) {
+  char *p, *begin_word, *end_word, *end_whitespace;
+
+  begin_word = *buf;
+  end_word = begin_word + strcspn(begin_word, delimiters);
+
+  // Check for quotechar
+  if (end_word > begin_word) {
+    p = end_word - 1;
+    while (*p == quotechar) {
+      // If there is anything beyond end_word, copy it
+      if (*end_word == '\0') {
+        *p = '\0';
+        break;
+      } else {
+        size_t end_off = strcspn(end_word + 1, delimiters);
+        memmove (p, end_word, end_off + 1);
+        p += end_off; // p must correspond to end_word - 1
+        end_word += end_off + 1;
+      }
+    }
+    for (p++; p < end_word; p++) {
+      *p = '\0';
+    }
+  }
+
+  if (*end_word == '\0') {
+    *buf = end_word;
+  } else {
+    end_whitespace = end_word + 1 + strspn(end_word + 1, whitespace);
+
+    for (p = end_word; p < end_whitespace; p++) {
+      *p = '\0';
+    }
+
+    *buf = end_whitespace;
+  }
+
+  return begin_word;
+}
+
+// Simplified version of skip_quoted without quote char
+// and whitespace == delimiters
+static char *skip(char **buf, const char *delimiters) {
+  return skip_quoted(buf, delimiters, delimiters, 0);
+}
+
+
+// Return HTTP header value, or NULL if not found.
+static const char *get_header(const struct mg_request_info *ri,
+                              const char *name) {
+  int i;
+
+  for (i = 0; i < ri->num_headers; i++)
+    if (!mg_strcasecmp(name, ri->http_headers[i].name))
+      return ri->http_headers[i].value;
+
+  return NULL;
+}
+
+const char *mg_get_header(const struct mg_connection *conn, const char *name) {
+  return get_header(&conn->request_info, name);
+}
+
+// A helper function for traversing a comma separated list of values.
+// It returns a list pointer shifted to the next value, or NULL if the end
+// of the list found.
+// Value is stored in val vector. If value has form "x=y", then eq_val
+// vector is initialized to point to the "y" part, and val vector length
+// is adjusted to point only to "x".
+static const char *next_option(const char *list, struct vec *val,
+                               struct vec *eq_val) {
+  if (list == NULL || *list == '\0') {
+    // End of the list
+    list = NULL;
+  } else {
+    val->ptr = list;
+    if ((list = strchr(val->ptr, ',')) != NULL) {
+      // Comma found. Store length and shift the list ptr
+      val->len = list - val->ptr;
+      list++;
+    } else {
+      // This value is the last one
+      list = val->ptr + strlen(val->ptr);
+      val->len = list - val->ptr;
+    }
+
+    if (eq_val != NULL) {
+      // Value has form "x=y", adjust pointers and lengths
+      // so that val points to "x", and eq_val points to "y".
+      eq_val->len = 0;
+      eq_val->ptr = (const char *) memchr(val->ptr, '=', val->len);
+      if (eq_val->ptr != NULL) {
+        eq_val->ptr++;  // Skip over '=' character
+        eq_val->len = val->ptr + val->len - eq_val->ptr;
+        val->len = (eq_val->ptr - val->ptr) - 1;
+      }
+    }
+  }
+
+  return list;
+}
+
+static int match_prefix(const char *pattern, int pattern_len, const char *str) {
+  const char *or_str;
+  int i, j, len, res;
+
+  if ((or_str = (const char *) memchr(pattern, '|', pattern_len)) != NULL) {
+    res = match_prefix(pattern, or_str - pattern, str);
+    return res > 0 ? res :
+        match_prefix(or_str + 1, (pattern + pattern_len) - (or_str + 1), str);
+  }
+
+  i = j = 0;
+  res = -1;
+  for (; i < pattern_len; i++, j++) {
+    if (pattern[i] == '?' && str[j] != '\0') {
+      continue;
+    } else if (pattern[i] == '$') {
+      return str[j] == '\0' ? j : -1;
+    } else if (pattern[i] == '*') {
+      i++;
+      if (pattern[i] == '*') {
+        i++;
+        len = (int) strlen(str + j);
+      } else {
+        len = (int) strcspn(str + j, "/");
+      }
+      if (i == pattern_len) {
+        return j + len;
+      }
+      do {
+        res = match_prefix(pattern + i, pattern_len - i, str + j + len);
+      } while (res == -1 && len-- > 0);
+      return res == -1 ? -1 : j + res + len;
+    } else if (pattern[i] != str[j]) {
+      return -1;
+    }
+  }
+  return j;
+}
+
+// HTTP 1.1 assumes keep alive if "Connection:" header is not set
+// This function must tolerate situations when connection info is not
+// set up, for example if request parsing failed.
+static int should_keep_alive(const struct mg_connection *conn) {
+  const char *http_version = conn->request_info.http_version;
+  const char *header = mg_get_header(conn, "Connection");
+  if (conn->must_close ||
+      conn->status_code == 401 ||
+      mg_strcasecmp(conn->ctx->config[ENABLE_KEEP_ALIVE], "yes") != 0 ||
+      (header != NULL && mg_strcasecmp(header, "keep-alive") != 0) ||
+      (header == NULL && http_version && strcmp(http_version, "1.1"))) {
+    return 0;
+  }
+  return 1;
+}
+
+static const char *suggest_connection_header(const struct mg_connection *conn) {
+  return should_keep_alive(conn) ? "keep-alive" : "close";
+}
+
+static void send_http_error(struct mg_connection *, int, const char *,
+                            PRINTF_FORMAT_STRING(const char *fmt), ...)
+  PRINTF_ARGS(4, 5);
+
+
+static void send_http_error(struct mg_connection *conn, int status,
+                            const char *reason, const char *fmt, ...) {
+  char buf[MG_BUF_LEN];
+  va_list ap;
+  int len = 0;
+
+  conn->status_code = status;
+  if (conn->ctx->callbacks.http_error == NULL ||
+      conn->ctx->callbacks.http_error(conn, status)) {
+    buf[0] = '\0';
+
+    // Errors 1xx, 204 and 304 MUST NOT send a body
+    if (status > 199 && status != 204 && status != 304) {
+      len = mg_snprintf(conn, buf, sizeof(buf), "Error %d: %s", status, reason);
+      buf[len++] = '\n';
+
+      va_start(ap, fmt);
+      len += mg_vsnprintf(conn, buf + len, sizeof(buf) - len, fmt, ap);
+      va_end(ap);
+    }
+    DEBUG_TRACE(("[%s]", buf));
+
+    mg_printf(conn, "HTTP/1.1 %d %s\r\n"
+              "Content-Length: %d\r\n"
+              "Connection: %s\r\n\r\n", status, reason, len,
+              suggest_connection_header(conn));
+    conn->num_bytes_sent += mg_printf(conn, "%s", buf);
+  }
+}
+
+#if defined(_WIN32) && !defined(__SYMBIAN32__)
+static int pthread_mutex_init(pthread_mutex_t *mutex, void *unused) {
+  (void) unused;
+  *mutex = CreateMutex(NULL, FALSE, NULL);
+  return *mutex == NULL ? -1 : 0;
+}
+
+static int pthread_mutex_destroy(pthread_mutex_t *mutex) {
+  return CloseHandle(*mutex) == 0 ? -1 : 0;
+}
+
+static int pthread_mutex_lock(pthread_mutex_t *mutex) {
+  return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;
+}
+
+static int pthread_mutex_unlock(pthread_mutex_t *mutex) {
+  return ReleaseMutex(*mutex) == 0 ? -1 : 0;
+}
+
+static int pthread_cond_init(pthread_cond_t *cv, const void *unused) {
+  (void) unused;
+  cv->signal = CreateEvent(NULL, FALSE, FALSE, NULL);
+  cv->broadcast = CreateEvent(NULL, TRUE, FALSE, NULL);
+  return cv->signal != NULL && cv->broadcast != NULL ? 0 : -1;
+}
+
+static int pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) {
+  HANDLE handles[] = {cv->signal, cv->broadcast};
+  ReleaseMutex(*mutex);
+  WaitForMultipleObjects(2, handles, FALSE, INFINITE);
+  return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;
+}
+
+static int pthread_cond_signal(pthread_cond_t *cv) {
+  return SetEvent(cv->signal) == 0 ? -1 : 0;
+}
+
+static int pthread_cond_broadcast(pthread_cond_t *cv) {
+  // Implementation with PulseEvent() has race condition, see
+  // http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
+  return PulseEvent(cv->broadcast) == 0 ? -1 : 0;
+}
+
+static int pthread_cond_destroy(pthread_cond_t *cv) {
+  return CloseHandle(cv->signal) && CloseHandle(cv->broadcast) ? 0 : -1;
+}
+
+// For Windows, change all slashes to backslashes in path names.
+static void change_slashes_to_backslashes(char *path) {
+  int i;
+
+  for (i = 0; path[i] != '\0'; i++) {
+    if (path[i] == '/')
+      path[i] = '\\';
+    // i > 0 check is to preserve UNC paths, like \\server\file.txt
+    if (path[i] == '\\' && i > 0)
+      while (path[i + 1] == '\\' || path[i + 1] == '/')
+        (void) memmove(path + i + 1,
+            path + i + 2, strlen(path + i + 1));
+  }
+}
+
+// Encode 'path' which is assumed UTF-8 string, into UNICODE string.
+// wbuf and wbuf_len is a target buffer and its length.
+static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len) {
+  char buf[PATH_MAX], buf2[PATH_MAX];
+
+  mg_strlcpy(buf, path, sizeof(buf));
+  change_slashes_to_backslashes(buf);
+
+  // Convert to Unicode and back. If doubly-converted string does not
+  // match the original, something is fishy, reject.
+  memset(wbuf, 0, wbuf_len * sizeof(wchar_t));
+  MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len);
+  WideCharToMultiByte(CP_UTF8, 0, wbuf, (int) wbuf_len, buf2, sizeof(buf2),
+                      NULL, NULL);
+  if (strcmp(buf, buf2) != 0) {
+    wbuf[0] = L'\0';
+  }
+}
+
+#if defined(_WIN32_WCE)
+static time_t time(time_t *ptime) {
+  time_t t;
+  SYSTEMTIME st;
+  FILETIME ft;
+
+  GetSystemTime(&st);
+  SystemTimeToFileTime(&st, &ft);
+  t = SYS2UNIX_TIME(ft.dwLowDateTime, ft.dwHighDateTime);
+
+  if (ptime != NULL) {
+    *ptime = t;
+  }
+
+  return t;
+}
+
+static struct tm *localtime(const time_t *ptime, struct tm *ptm) {
+  int64_t t = ((int64_t) *ptime) * RATE_DIFF + EPOCH_DIFF;
+  FILETIME ft, lft;
+  SYSTEMTIME st;
+  TIME_ZONE_INFORMATION tzinfo;
+
+  if (ptm == NULL) {
+    return NULL;
+  }
+
+  * (int64_t *) &ft = t;
+  FileTimeToLocalFileTime(&ft, &lft);
+  FileTimeToSystemTime(&lft, &st);
+  ptm->tm_year = st.wYear - 1900;
+  ptm->tm_mon = st.wMonth - 1;
+  ptm->tm_wday = st.wDayOfWeek;
+  ptm->tm_mday = st.wDay;
+  ptm->tm_hour = st.wHour;
+  ptm->tm_min = st.wMinute;
+  ptm->tm_sec = st.wSecond;
+  ptm->tm_yday = 0; // hope nobody uses this
+  ptm->tm_isdst =
+    GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_DAYLIGHT ? 1 : 0;
+
+  return ptm;
+}
+
+static struct tm *gmtime(const time_t *ptime, struct tm *ptm) {
+  // FIXME(lsm): fix this.
+  return localtime(ptime, ptm);
+}
+
+static size_t strftime(char *dst, size_t dst_size, const char *fmt,
+                       const struct tm *tm) {
+  (void) snprintf(dst, dst_size, "implement strftime() for WinCE");
+  return 0;
+}
+#endif
+
+// Windows happily opens files with some garbage at the end of file name.
+// For example, fopen("a.cgi    ", "r") on Windows successfully opens
+// "a.cgi", despite one would expect an error back.
+// This function returns non-0 if path ends with some garbage.
+static int path_cannot_disclose_cgi(const char *path) {
+  static const char *allowed_last_characters = "_-";
+  int last = path[strlen(path) - 1];
+  return isalnum(last) || strchr(allowed_last_characters, last) != NULL;
+}
+
+static int mg_stat(struct mg_connection *conn, const char *path,
+                   struct file *filep) {
+  wchar_t wbuf[PATH_MAX];
+  WIN32_FILE_ATTRIBUTE_DATA info;
+
+  if (!is_file_in_memory(conn, path, filep)) {
+    to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
+    if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) {
+      filep->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh);
+      filep->modification_time = SYS2UNIX_TIME(
+          info.ftLastWriteTime.dwLowDateTime,
+          info.ftLastWriteTime.dwHighDateTime);
+      filep->is_directory = info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
+      // If file name is fishy, reset the file structure and return error.
+      // Note it is important to reset, not just return the error, cause
+      // functions like is_file_opened() check the struct.
+      if (!filep->is_directory && !path_cannot_disclose_cgi(path)) {
+        memset(filep, 0, sizeof(*filep));
+      }
+    }
+  }
+
+  return filep->membuf != NULL || filep->modification_time != 0;
+}
+
+static int mg_remove(const char *path) {
+  wchar_t wbuf[PATH_MAX];
+  to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
+  return DeleteFileW(wbuf) ? 0 : -1;
+}
+
+static int mg_mkdir(const char *path, int mode) {
+  char buf[PATH_MAX];
+  wchar_t wbuf[PATH_MAX];
+
+  (void) mode;
+  mg_strlcpy(buf, path, sizeof(buf));
+  change_slashes_to_backslashes(buf);
+
+  (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, ARRAY_SIZE(wbuf));
+
+  return CreateDirectoryW(wbuf, NULL) ? 0 : -1;
+}
+
+// Implementation of POSIX opendir/closedir/readdir for Windows.
+static DIR * opendir(const char *name) {
+  DIR *dir = NULL;
+  wchar_t wpath[PATH_MAX];
+  DWORD attrs;
+
+  if (name == NULL) {
+    SetLastError(ERROR_BAD_ARGUMENTS);
+  } else if ((dir = (DIR *) malloc(sizeof(*dir))) == NULL) {
+    SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+  } else {
+    to_unicode(name, wpath, ARRAY_SIZE(wpath));
+    attrs = GetFileAttributesW(wpath);
+    if (attrs != 0xFFFFFFFF &&
+        ((attrs & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY)) {
+      (void) wcscat(wpath, L"\\*");
+      dir->handle = FindFirstFileW(wpath, &dir->info);
+      dir->result.d_name[0] = '\0';
+    } else {
+      free(dir);
+      dir = NULL;
+    }
+  }
+
+  return dir;
+}
+
+static int closedir(DIR *dir) {
+  int result = 0;
+
+  if (dir != NULL) {
+    if (dir->handle != INVALID_HANDLE_VALUE)
+      result = FindClose(dir->handle) ? 0 : -1;
+
+    free(dir);
+  } else {
+    result = -1;
+    SetLastError(ERROR_BAD_ARGUMENTS);
+  }
+
+  return result;
+}
+
+static struct dirent *readdir(DIR *dir) {
+  struct dirent *result = 0;
+
+  if (dir) {
+    if (dir->handle != INVALID_HANDLE_VALUE) {
+      result = &dir->result;
+      (void) WideCharToMultiByte(CP_UTF8, 0,
+          dir->info.cFileName, -1, result->d_name,
+          sizeof(result->d_name), NULL, NULL);
+
+      if (!FindNextFileW(dir->handle, &dir->info)) {
+        (void) FindClose(dir->handle);
+        dir->handle = INVALID_HANDLE_VALUE;
+      }
+
+    } else {
+      SetLastError(ERROR_FILE_NOT_FOUND);
+    }
+  } else {
+    SetLastError(ERROR_BAD_ARGUMENTS);
+  }
+
+  return result;
+}
+
+#ifndef HAVE_POLL
+static int poll(struct pollfd *pfd, int n, int milliseconds) {
+  struct timeval tv;
+  fd_set set;
+  int i, result, maxfd = 0;
+
+  tv.tv_sec = milliseconds / 1000;
+  tv.tv_usec = (milliseconds % 1000) * 1000;
+  FD_ZERO(&set);
+
+  for (i = 0; i < n; i++) {
+    FD_SET((SOCKET) pfd[i].fd, &set);
+    pfd[i].revents = 0;
+
+    if (pfd[i].fd > maxfd) {
+        maxfd = pfd[i].fd;
+    }
+  }
+
+  if ((result = select(maxfd + 1, &set, NULL, NULL, &tv)) > 0) {
+    for (i = 0; i < n; i++) {
+      if (FD_ISSET(pfd[i].fd, &set)) {
+        pfd[i].revents = POLLIN;
+      }
+    }
+  }
+
+  return result;
+}
+#endif // HAVE_POLL
+
+#define set_close_on_exec(x) // No FD_CLOEXEC on Windows
+
+int mg_start_thread(mg_thread_func_t f, void *p) {
+  return (long)_beginthread((void (__cdecl *)(void *)) f, 0, p) == -1L ? -1 : 0;
+}
+
+static HANDLE dlopen(const char *dll_name, int flags) {
+  wchar_t wbuf[PATH_MAX];
+  (void) flags;
+  to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf));
+  return LoadLibraryW(wbuf);
+}
+
+#if !defined(NO_CGI)
+#define SIGKILL 0
+static int kill(pid_t pid, int sig_num) {
+  (void) TerminateProcess(pid, sig_num);
+  (void) CloseHandle(pid);
+  return 0;
+}
+
+static void trim_trailing_whitespaces(char *s) {
+  char *e = s + strlen(s) - 1;
+  while (e > s && isspace(* (unsigned char *) e)) {
+    *e-- = '\0';
+  }
+}
+
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,
+                           char *envblk, char *envp[], int fd_stdin,
+                           int fd_stdout, const char *dir) {
+  HANDLE me;
+  char *p, *interp, full_interp[PATH_MAX], full_dir[PATH_MAX],
+       cmdline[PATH_MAX], buf[PATH_MAX];
+  struct file file = STRUCT_FILE_INITIALIZER;
+  STARTUPINFOA si;
+  PROCESS_INFORMATION pi = { 0 };
+
+  (void) envp;
+
+  memset(&si, 0, sizeof(si));
+  si.cb = sizeof(si);
+
+  // TODO(lsm): redirect CGI errors to the error log file
+  si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
+  si.wShowWindow = SW_HIDE;
+
+  me = GetCurrentProcess();
+  DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdin), me,
+                  &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);
+  DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdout), me,
+                  &si.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
+
+  // If CGI file is a script, try to read the interpreter line
+  interp = conn->ctx->config[CGI_INTERPRETER];
+  if (interp == NULL) {
+    buf[0] = buf[1] = '\0';
+
+    // Read the first line of the script into the buffer
+    snprintf(cmdline, sizeof(cmdline), "%s%c%s", dir, '/', prog);
+    if (mg_fopen(conn, cmdline, "r", &file)) {
+      p = (char *) file.membuf;
+      mg_fgets(buf, sizeof(buf), &file, &p);
+      mg_fclose(&file);
+      buf[sizeof(buf) - 1] = '\0';
+    }
+
+    if (buf[0] == '#' && buf[1] == '!') {
+      trim_trailing_whitespaces(buf + 2);
+    } else {
+      buf[2] = '\0';
+    }
+    interp = buf + 2;
+  }
+
+  if (interp[0] != '\0') {
+    GetFullPathNameA(interp, sizeof(full_interp), full_interp, NULL);
+    interp = full_interp;
+  }
+  GetFullPathNameA(dir, sizeof(full_dir), full_dir, NULL);
+
+  mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s%s\\%s",
+              interp, interp[0] == '\0' ? "" : " ", full_dir, prog);
+
+  DEBUG_TRACE(("Running [%s]", cmdline));
+  if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE,
+        CREATE_NEW_PROCESS_GROUP, envblk, NULL, &si, &pi) == 0) {
+    cry(conn, "%s: CreateProcess(%s): %ld",
+        __func__, cmdline, ERRNO);
+    pi.hProcess = (pid_t) -1;
+  }
+
+  // Always close these to prevent handle leakage.
+  (void) close(fd_stdin);
+  (void) close(fd_stdout);
+
+  (void) CloseHandle(si.hStdOutput);
+  (void) CloseHandle(si.hStdInput);
+  (void) CloseHandle(pi.hThread);
+
+  return (pid_t) pi.hProcess;
+}
+#endif // !NO_CGI
+
+static int set_non_blocking_mode(SOCKET sock) {
+  unsigned long on = 1;
+  return ioctlsocket(sock, FIONBIO, &on);
+}
+
+#else
+static int mg_stat(struct mg_connection *conn, const char *path,
+                   struct file *filep) {
+  struct stat st;
+
+  if (!is_file_in_memory(conn, path, filep) && !stat(path, &st)) {
+    filep->size = st.st_size;
+    filep->modification_time = st.st_mtime;
+    filep->is_directory = S_ISDIR(st.st_mode);
+  } else {
+    filep->modification_time = (time_t) 0;
+  }
+
+  return filep->membuf != NULL || filep->modification_time != (time_t) 0;
+}
+
+static void set_close_on_exec(int fd) {
+  fcntl(fd, F_SETFD, FD_CLOEXEC);
+}
+
+int mg_start_thread(mg_thread_func_t func, void *param) {
+  pthread_t thread_id;
+  pthread_attr_t attr;
+  int result;
+
+  (void) pthread_attr_init(&attr);
+  (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+  // TODO(lsm): figure out why mongoose dies on Linux if next line is enabled
+  // (void) pthread_attr_setstacksize(&attr, sizeof(struct mg_connection) * 5);
+
+  result = pthread_create(&thread_id, &attr, func, param);
+  pthread_attr_destroy(&attr);
+
+  return result;
+}
+
+#ifndef NO_CGI
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,
+                           char *envblk, char *envp[], int fd_stdin,
+                           int fd_stdout, const char *dir) {
+  pid_t pid;
+  const char *interp;
+
+  (void) envblk;
+
+  if ((pid = fork()) == -1) {
+    // Parent
+    send_http_error(conn, 500, http_500_error, "fork(): %s", strerror(ERRNO));
+  } else if (pid == 0) {
+    // Child
+    if (chdir(dir) != 0) {
+      cry(conn, "%s: chdir(%s): %s", __func__, dir, strerror(ERRNO));
+    } else if (dup2(fd_stdin, 0) == -1) {
+      cry(conn, "%s: dup2(%d, 0): %s", __func__, fd_stdin, strerror(ERRNO));
+    } else if (dup2(fd_stdout, 1) == -1) {
+      cry(conn, "%s: dup2(%d, 1): %s", __func__, fd_stdout, strerror(ERRNO));
+    } else {
+      (void) dup2(fd_stdout, 2);
+      (void) close(fd_stdin);
+      (void) close(fd_stdout);
+
+      // After exec, all signal handlers are restored to their default values,
+      // with one exception of SIGCHLD. According to POSIX.1-2001 and Linux's
+      // implementation, SIGCHLD's handler will leave unchanged after exec
+      // if it was set to be ignored. Restore it to default action.
+      signal(SIGCHLD, SIG_DFL);
+
+      interp = conn->ctx->config[CGI_INTERPRETER];
+      if (interp == NULL) {
+        (void) execle(prog, prog, NULL, envp);
+        cry(conn, "%s: execle(%s): %s", __func__, prog, strerror(ERRNO));
+      } else {
+        (void) execle(interp, interp, prog, NULL, envp);
+        cry(conn, "%s: execle(%s %s): %s", __func__, interp, prog,
+            strerror(ERRNO));
+      }
+    }
+    exit(EXIT_FAILURE);
+  }
+
+  // Parent. Close stdio descriptors
+  (void) close(fd_stdin);
+  (void) close(fd_stdout);
+
+  return pid;
+}
+#endif // !NO_CGI
+
+static int set_non_blocking_mode(SOCKET sock) {
+  int flags;
+
+  flags = fcntl(sock, F_GETFL, 0);
+  (void) fcntl(sock, F_SETFL, flags | O_NONBLOCK);
+
+  return 0;
+}
+#endif // _WIN32
+
+// Write data to the IO channel - opened file descriptor, socket or SSL
+// descriptor. Return number of bytes written.
+static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
+                    int64_t len) {
+  int64_t sent;
+  int n, k;
+
+  (void) ssl;  // Get rid of warning
+  sent = 0;
+  while (sent < len) {
+
+    // How many bytes we send in this iteration
+    k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);
+
+#ifndef NO_SSL
+    if (ssl != NULL) {
+      n = SSL_write(ssl, buf + sent, k);
+    } else
+#endif
+      if (fp != NULL) {
+      n = (int) fwrite(buf + sent, 1, (size_t) k, fp);
+      if (ferror(fp))
+        n = -1;
+    } else {
+      n = send(sock, buf + sent, (size_t) k, MSG_NOSIGNAL);
+    }
+
+    if (n <= 0)
+      break;
+
+    sent += n;
+  }
+
+  return sent;
+}
+
+// Read from IO channel - opened file descriptor, socket, or SSL descriptor.
+// Return negative value on error, or number of bytes read on success.
+static int pull(FILE *fp, struct mg_connection *conn, char *buf, int len) {
+  int nread;
+
+  if (fp != NULL) {
+    // Use read() instead of fread(), because if we're reading from the CGI
+    // pipe, fread() may block until IO buffer is filled up. We cannot afford
+    // to block and must pass all read bytes immediately to the client.
+    nread = read(fileno(fp), buf, (size_t) len);
+#ifndef NO_SSL
+  } else if (conn->ssl != NULL) {
+    nread = SSL_read(conn->ssl, buf, len);
+#endif
+  } else {
+    nread = recv(conn->client.sock, buf, (size_t) len, 0);
+  }
+
+  return conn->ctx->stop_flag ? -1 : nread;
+}
+
+static int pull_all(FILE *fp, struct mg_connection *conn, char *buf, int len) {
+  int n, nread = 0;
+
+  while (len > 0) {
+    n = pull(fp, conn, buf + nread, len);
+    if (n < 0) {
+      nread = n;  // Propagate the error
+      break;
+    } else if (n == 0) {
+      break;  // No more data to read
+    } else {
+      conn->consumed_content += n;
+      nread += n;
+      len -= n;
+    }
+  }
+
+  return nread;
+}
+
+int mg_read(struct mg_connection *conn, void *buf, size_t len) {
+  int n, buffered_len, nread;
+  const char *body;
+
+  nread = 0;
+  if (conn->consumed_content < conn->content_len) {
+    // Adjust number of bytes to read.
+    int64_t to_read = conn->content_len - conn->consumed_content;
+    if (to_read < (int64_t) len) {
+      len = (size_t) to_read;
+    }
+
+    // Return buffered data
+    body = conn->buf + conn->request_len + conn->consumed_content;
+    buffered_len = &conn->buf[conn->data_len] - body;
+    if (buffered_len > 0) {
+      if (len < (size_t) buffered_len) {
+        buffered_len = (int) len;
+      }
+      memcpy(buf, body, (size_t) buffered_len);
+      len -= buffered_len;
+      conn->consumed_content += buffered_len;
+      nread += buffered_len;
+      buf = (char *) buf + buffered_len;
+    }
+
+    // We have returned all buffered data. Read new data from the remote socket.
+    n = pull_all(NULL, conn, (char *) buf, (int) len);
+    nread = n >= 0 ? nread + n : n;
+  }
+  return nread;
+}
+
+int mg_write(struct mg_connection *conn, const void *buf, size_t len) {
+  time_t now;
+  int64_t n, total, allowed;
+
+  if (conn->throttle > 0) {
+    if ((now = time(NULL)) != conn->last_throttle_time) {
+      conn->last_throttle_time = now;
+      conn->last_throttle_bytes = 0;
+    }
+    allowed = conn->throttle - conn->last_throttle_bytes;
+    if (allowed > (int64_t) len) {
+      allowed = len;
+    }
+    if ((total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+                      (int64_t) allowed)) == allowed) {
+      buf = (char *) buf + total;
+      conn->last_throttle_bytes += total;
+      while (total < (int64_t) len && conn->ctx->stop_flag == 0) {
+        allowed = conn->throttle > (int64_t) len - total ?
+          (int64_t) len - total : conn->throttle;
+        if ((n = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+                      (int64_t) allowed)) != allowed) {
+          break;
+        }
+        sleep(1);
+        conn->last_throttle_bytes = allowed;
+        conn->last_throttle_time = time(NULL);
+        buf = (char *) buf + n;
+        total += n;
+      }
+    }
+  } else {
+    total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+                 (int64_t) len);
+  }
+  return (int) total;
+}
+
+// Print message to buffer. If buffer is large enough to hold the message,
+// return buffer. If buffer is to small, allocate large enough buffer on heap,
+// and return allocated buffer.
+static int alloc_vprintf(char **buf, size_t size, const char *fmt, va_list ap) {
+  va_list ap_copy;
+  int len;
+
+  // Windows is not standard-compliant, and vsnprintf() returns -1 if
+  // buffer is too small. Also, older versions of msvcrt.dll do not have
+  // _vscprintf().  However, if size is 0, vsnprintf() behaves correctly.
+  // Therefore, we make two passes: on first pass, get required message length.
+  // On second pass, actually print the message.
+  va_copy(ap_copy, ap);
+  len = vsnprintf(NULL, 0, fmt, ap_copy);
+
+  if (len > (int) size &&
+      (size = len + 1) > 0 &&
+      (*buf = (char *) malloc(size)) == NULL) {
+    len = -1;  // Allocation failed, mark failure
+  } else {
+    va_copy(ap_copy, ap);
+    vsnprintf(*buf, size, fmt, ap_copy);
+  }
+
+  return len;
+}
+
+int mg_vprintf(struct mg_connection *conn, const char *fmt, va_list ap) {
+  char mem[MG_BUF_LEN], *buf = mem;
+  int len;
+
+  if ((len = alloc_vprintf(&buf, sizeof(mem), fmt, ap)) > 0) {
+    len = mg_write(conn, buf, (size_t) len);
+  }
+  if (buf != mem && buf != NULL) {
+    free(buf);
+  }
+
+  return len;
+}
+
+int mg_printf(struct mg_connection *conn, const char *fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  return mg_vprintf(conn, fmt, ap);
+}
+
+int mg_url_decode(const char *src, int src_len, char *dst,
+                  int dst_len, int is_form_url_encoded) {
+  int i, j, a, b;
+#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')
+
+  for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) {
+    if (src[i] == '%' && i < src_len - 2 &&
+        isxdigit(* (const unsigned char *) (src + i + 1)) &&
+        isxdigit(* (const unsigned char *) (src + i + 2))) {
+      a = tolower(* (const unsigned char *) (src + i + 1));
+      b = tolower(* (const unsigned char *) (src + i + 2));
+      dst[j] = (char) ((HEXTOI(a) << 4) | HEXTOI(b));
+      i += 2;
+    } else if (is_form_url_encoded && src[i] == '+') {
+      dst[j] = ' ';
+    } else {
+      dst[j] = src[i];
+    }
+  }
+
+  dst[j] = '\0'; // Null-terminate the destination
+
+  return i >= src_len ? j : -1;
+}
+
+int mg_get_var(const char *data, size_t data_len, const char *name,
+               char *dst, size_t dst_len) {
+  const char *p, *e, *s;
+  size_t name_len;
+  int len;
+
+  if (dst == NULL || dst_len == 0) {
+    len = -2;
+  } else if (data == NULL || name == NULL || data_len == 0) {
+    len = -1;
+    dst[0] = '\0';
+  } else {
+    name_len = strlen(name);
+    e = data + data_len;
+    len = -1;
+    dst[0] = '\0';
+
+    // data is "var1=val1&var2=val2...". Find variable first
+    for (p = data; p + name_len < e; p++) {
+      if ((p == data || p[-1] == '&') && p[name_len] == '=' &&
+          !mg_strncasecmp(name, p, name_len)) {
+
+        // Point p to variable value
+        p += name_len + 1;
+
+        // Point s to the end of the value
+        s = (const char *) memchr(p, '&', (size_t)(e - p));
+        if (s == NULL) {
+          s = e;
+        }
+        assert(s >= p);
+
+        // Decode variable into destination buffer
+        len = mg_url_decode(p, (size_t)(s - p), dst, dst_len, 1);
+
+        // Redirect error code from -1 to -2 (destination buffer too small).
+        if (len == -1) {
+          len = -2;
+        }
+        break;
+      }
+    }
+  }
+
+  return len;
+}
+
+int mg_get_cookie(const char *cookie_header, const char *var_name,
+                  char *dst, size_t dst_size) {
+  const char *s, *p, *end;
+  int name_len, len = -1;
+
+  if (dst == NULL || dst_size == 0) {
+    len = -2;
+  } else if (var_name == NULL || (s = cookie_header) == NULL) {
+    len = -1;
+    dst[0] = '\0';
+  } else {
+    name_len = (int) strlen(var_name);
+    end = s + strlen(s);
+    dst[0] = '\0';
+
+    for (; (s = mg_strcasestr(s, var_name)) != NULL; s += name_len) {
+      if (s[name_len] == '=') {
+        s += name_len + 1;
+        if ((p = strchr(s, ' ')) == NULL)
+          p = end;
+        if (p[-1] == ';')
+          p--;
+        if (*s == '"' && p[-1] == '"' && p > s + 1) {
+          s++;
+          p--;
+        }
+        if ((size_t) (p - s) < dst_size) {
+          len = p - s;
+          mg_strlcpy(dst, s, (size_t) len + 1);
+        } else {
+          len = -3;
+        }
+        break;
+      }
+    }
+  }
+  return len;
+}
+
+static void convert_uri_to_file_name(struct mg_connection *conn, char *buf,
+                                     size_t buf_len, struct file *filep) {
+  struct vec a, b;
+  const char *rewrite, *uri = conn->request_info.uri;
+  char *p;
+  int match_len;
+  char gz_path[PATH_MAX];
+  char const* accept_encoding;
+
+  // Using buf_len - 1 because memmove() for PATH_INFO may shift part
+  // of the path one byte on the right.
+  mg_snprintf(conn, buf, buf_len - 1, "%s%s", conn->ctx->config[DOCUMENT_ROOT],
+              uri);
+
+  rewrite = conn->ctx->config[REWRITE];
+  while ((rewrite = next_option(rewrite, &a, &b)) != NULL) {
+    if ((match_len = match_prefix(a.ptr, a.len, uri)) > 0) {
+      mg_snprintf(conn, buf, buf_len - 1, "%.*s%s", (int) b.len, b.ptr,
+                  uri + match_len);
+      break;
+    }
+  }
+
+  if (mg_stat(conn, buf, filep)) return;
+
+  // if we can't find the actual file, look for the file
+  // with the same name but a .gz extension. If we find it,
+  // use that and set the gzipped flag in the file struct
+  // to indicate that the response need to have the content-
+  // encoding: gzip header
+  // we can only do this if the browser declares support
+  if ((accept_encoding = mg_get_header(conn, "Accept-Encoding")) != NULL) {
+    if (strstr(accept_encoding,"gzip") != NULL) {
+      snprintf(gz_path, sizeof(gz_path), "%s.gz", buf);
+      if (mg_stat(conn, gz_path, filep)) {
+        filep->gzipped = 1;
+        return;
+      }
+    }
+  }
+
+  // Support PATH_INFO for CGI scripts.
+  for (p = buf + strlen(buf); p > buf + 1; p--) {
+    if (*p == '/') {
+      *p = '\0';
+      if (match_prefix(conn->ctx->config[CGI_EXTENSIONS],
+                       strlen(conn->ctx->config[CGI_EXTENSIONS]), buf) > 0 &&
+          mg_stat(conn, buf, filep)) {
+        // Shift PATH_INFO block one character right, e.g.
+        //  "/x.cgi/foo/bar\x00" => "/x.cgi\x00/foo/bar\x00"
+        // conn->path_info is pointing to the local variable "path" declared
+        // in handle_request(), so PATH_INFO is not valid after
+        // handle_request returns.
+        conn->path_info = p + 1;
+        memmove(p + 2, p + 1, strlen(p + 1) + 1);  // +1 is for trailing \0
+        p[1] = '/';
+        break;
+      } else {
+        *p = '/';
+      }
+    }
+  }
+}
+
+// Check whether full request is buffered. Return:
+//   -1  if request is malformed
+//    0  if request is not yet fully buffered
+//   >0  actual request length, including last \r\n\r\n
+static int get_request_len(const char *buf, int buflen) {
+  const char *s, *e;
+  int len = 0;
+
+  for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++)
+    // Control characters are not allowed but >=128 is.
+    if (!isprint(* (const unsigned char *) s) && *s != '\r' &&
+        *s != '\n' && * (const unsigned char *) s < 128) {
+      len = -1;
+      break;  // [i_a] abort scan as soon as one malformed character is found;
+              // don't let subsequent \r\n\r\n win us over anyhow
+    } else if (s[0] == '\n' && s[1] == '\n') {
+      len = (int) (s - buf) + 2;
+    } else if (s[0] == '\n' && &s[1] < e &&
+        s[1] == '\r' && s[2] == '\n') {
+      len = (int) (s - buf) + 3;
+    }
+
+  return len;
+}
+
+// Convert month to the month number. Return -1 on error, or month number
+static int get_month_index(const char *s) {
+  size_t i;
+
+  for (i = 0; i < ARRAY_SIZE(month_names); i++)
+    if (!strcmp(s, month_names[i]))
+      return (int) i;
+
+  return -1;
+}
+
+static int num_leap_years(int year) {
+  return year / 4 - year / 100 + year / 400;
+}
+
+// Parse UTC date-time string, and return the corresponding time_t value.
+static time_t parse_date_string(const char *datetime) {
+  static const unsigned short days_before_month[] = {
+    0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
+  };
+  char month_str[32];
+  int second, minute, hour, day, month, year, leap_days, days;
+  time_t result = (time_t) 0;
+
+  if (((sscanf(datetime, "%d/%3s/%d %d:%d:%d",
+               &day, month_str, &year, &hour, &minute, &second) == 6) ||
+       (sscanf(datetime, "%d %3s %d %d:%d:%d",
+               &day, month_str, &year, &hour, &minute, &second) == 6) ||
+       (sscanf(datetime, "%*3s, %d %3s %d %d:%d:%d",
+               &day, month_str, &year, &hour, &minute, &second) == 6) ||
+       (sscanf(datetime, "%d-%3s-%d %d:%d:%d",
+               &day, month_str, &year, &hour, &minute, &second) == 6)) &&
+      year > 1970 &&
+      (month = get_month_index(month_str)) != -1) {
+    leap_days = num_leap_years(year) - num_leap_years(1970);
+    year -= 1970;
+    days = year * 365 + days_before_month[month] + (day - 1) + leap_days;
+    result = days * 24 * 3600 + hour * 3600 + minute * 60 + second;
+  }
+
+  return result;
+}
+
+// Protect against directory disclosure attack by removing '..',
+// excessive '/' and '\' characters
+static void remove_double_dots_and_double_slashes(char *s) {
+  char *p = s;
+
+  while (*s != '\0') {
+    *p++ = *s++;
+    if (s[-1] == '/' || s[-1] == '\\') {
+      // Skip all following slashes, backslashes and double-dots
+      while (s[0] != '\0') {
+        if (s[0] == '/' || s[0] == '\\') {
+          s++;
+        } else if (s[0] == '.' && s[1] == '.') {
+          s += 2;
+        } else {
+          break;
+        }
+      }
+    }
+  }
+  *p = '\0';
+}
+
+static const struct {
+  const char *extension;
+  size_t ext_len;
+  const char *mime_type;
+} builtin_mime_types[] = {
+  {".html", 5, "text/html"},
+  {".htm", 4, "text/html"},
+  {".shtm", 5, "text/html"},
+  {".shtml", 6, "text/html"},
+  {".css", 4, "text/css"},
+  {".js",  3, "application/x-javascript"},
+  {".ico", 4, "image/x-icon"},
+  {".gif", 4, "image/gif"},
+  {".jpg", 4, "image/jpeg"},
+  {".jpeg", 5, "image/jpeg"},
+  {".png", 4, "image/png"},
+  {".svg", 4, "image/svg+xml"},
+  {".txt", 4, "text/plain"},
+  {".torrent", 8, "application/x-bittorrent"},
+  {".wav", 4, "audio/x-wav"},
+  {".mp3", 4, "audio/x-mp3"},
+  {".mid", 4, "audio/mid"},
+  {".m3u", 4, "audio/x-mpegurl"},
+  {".ogg", 4, "audio/ogg"},
+  {".ram", 4, "audio/x-pn-realaudio"},
+  {".xml", 4, "text/xml"},
+  {".json",  5, "text/json"},
+  {".xslt", 5, "application/xml"},
+  {".xsl", 4, "application/xml"},
+  {".ra",  3, "audio/x-pn-realaudio"},
+  {".doc", 4, "application/msword"},
+  {".exe", 4, "application/octet-stream"},
+  {".zip", 4, "application/x-zip-compressed"},
+  {".xls", 4, "application/excel"},
+  {".tgz", 4, "application/x-tar-gz"},
+  {".tar", 4, "application/x-tar"},
+  {".gz",  3, "application/x-gunzip"},
+  {".arj", 4, "application/x-arj-compressed"},
+  {".rar", 4, "application/x-arj-compressed"},
+  {".rtf", 4, "application/rtf"},
+  {".pdf", 4, "application/pdf"},
+  {".swf", 4, "application/x-shockwave-flash"},
+  {".mpg", 4, "video/mpeg"},
+  {".webm", 5, "video/webm"},
+  {".mpeg", 5, "video/mpeg"},
+  {".mov", 4, "video/quicktime"},
+  {".mp4", 4, "video/mp4"},
+  {".m4v", 4, "video/x-m4v"},
+  {".asf", 4, "video/x-ms-asf"},
+  {".avi", 4, "video/x-msvideo"},
+  {".bmp", 4, "image/bmp"},
+  {".ttf", 4, "application/x-font-ttf"},
+  {NULL,  0, NULL}
+};
+
+const char *mg_get_builtin_mime_type(const char *path) {
+  const char *ext;
+  size_t i, path_len;
+
+  path_len = strlen(path);
+
+  for (i = 0; builtin_mime_types[i].extension != NULL; i++) {
+    ext = path + (path_len - builtin_mime_types[i].ext_len);
+    if (path_len > builtin_mime_types[i].ext_len &&
+        mg_strcasecmp(ext, builtin_mime_types[i].extension) == 0) {
+      return builtin_mime_types[i].mime_type;
+    }
+  }
+
+  return "text/plain";
+}
+
+// Look at the "path" extension and figure what mime type it has.
+// Store mime type in the vector.
+static void get_mime_type(struct mg_context *ctx, const char *path,
+                          struct vec *vec) {
+  struct vec ext_vec, mime_vec;
+  const char *list, *ext;
+  size_t path_len;
+
+  path_len = strlen(path);
+
+  // Scan user-defined mime types first, in case user wants to
+  // override default mime types.
+  list = ctx->config[EXTRA_MIME_TYPES];
+  while ((list = next_option(list, &ext_vec, &mime_vec)) != NULL) {
+    // ext now points to the path suffix
+    ext = path + path_len - ext_vec.len;
+    if (mg_strncasecmp(ext, ext_vec.ptr, ext_vec.len) == 0) {
+      *vec = mime_vec;
+      return;
+    }
+  }
+
+  vec->ptr = mg_get_builtin_mime_type(path);
+  vec->len = strlen(vec->ptr);
+}
+
+static int is_big_endian(void) {
+  static const int n = 1;
+  return ((char *) &n)[0] == 0;
+}
+
+#ifndef HAVE_MD5
+typedef struct MD5Context {
+  uint32_t buf[4];
+  uint32_t bits[2];
+  unsigned char in[64];
+} MD5_CTX;
+
+static void byteReverse(unsigned char *buf, unsigned longs) {
+  uint32_t t;
+
+  // Forrest: MD5 expect LITTLE_ENDIAN, swap if BIG_ENDIAN
+  if (is_big_endian()) {
+    do {
+      t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+        ((unsigned) buf[1] << 8 | buf[0]);
+      * (uint32_t *) buf = t;
+      buf += 4;
+    } while (--longs);
+  }
+}
+
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+#define MD5STEP(f, w, x, y, z, data, s) \
+  ( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+
+// Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
+// initialization constants.
+static void MD5Init(MD5_CTX *ctx) {
+  ctx->buf[0] = 0x67452301;
+  ctx->buf[1] = 0xefcdab89;
+  ctx->buf[2] = 0x98badcfe;
+  ctx->buf[3] = 0x10325476;
+
+  ctx->bits[0] = 0;
+  ctx->bits[1] = 0;
+}
+
+static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) {
+  register uint32_t a, b, c, d;
+
+  a = buf[0];
+  b = buf[1];
+  c = buf[2];
+  d = buf[3];
+
+  MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+  MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+  MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+  MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+  MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+  MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+  MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+  MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+  MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+  MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+  MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+  MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+  MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+  MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+  MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+  MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+  MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+  MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+  MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+  MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+  MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+  MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+  MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+  MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+  MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+  MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+  MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+  MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+  MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+  MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+  MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+  MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+  MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+  MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+  MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+  MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+  MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+  MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+  MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+  MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+  MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+  MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+  MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+  MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+  MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+  MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+  MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+  MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+  MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+  MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+  MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+  MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+  MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+  MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+  MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+  MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+  MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+  MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+  MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+  MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+  MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+  MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+  MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+  MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+  buf[0] += a;
+  buf[1] += b;
+  buf[2] += c;
+  buf[3] += d;
+}
+
+static void MD5Update(MD5_CTX *ctx, unsigned char const *buf, unsigned len) {
+  uint32_t t;