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/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2016 Ole Christian Eidheim
*
* 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.
*/
#include <iostream>
#include <fstream>
#include <boost/filesystem.hpp>
#include "http-server/http_server.h"
typedef icn_httpserver::HttpServer HttpServer;
typedef icn_httpserver::Response Response;
typedef icn_httpserver::Request Request;
namespace std {
void default_resource_send(const HttpServer &server,
shared_ptr<Response> response,
shared_ptr<ifstream> ifs,
shared_ptr<vector<char>> buffer,
std::size_t bytes_to_read) {
streamsize read_length;
if ((read_length = ifs->read(&(*buffer)[0], buffer->size()).gcount()) > 0) {
response->write(&(*buffer)[0], read_length);
if (bytes_to_read <= static_cast<streamsize>(buffer->size())) {
// If this is the last part of the response, send it at the pointer deletion!
return;
}
std::size_t to_read = bytes_to_read - read_length;
server.send(response, [&server, response, ifs, buffer, to_read](const boost::system::error_code &ec) {
if (!ec) {
default_resource_send(server, response, ifs, buffer, to_read);
} else {
cerr << "Connection interrupted" << endl;
}
});
}
}
void afterSignal(HttpServer *webServer, const boost::system::error_code &errorCode) {
cout << "\nGracefully terminating http-server... wait." << endl;
webServer->stop();
}
void usage(const char *programName) {
cerr << programName << " [-p PATH_TO_ROOT_FOOT_FOLDER] [-l WEBSERVER_PREFIX]\n"
<< "Web server able to publish content and generate http responses over TCP/ICN\n" << endl;
exit(1);
}
int main(int argc, char **argv) {
// Parse command line arguments
string root_folder = "/var/www/html";
string webserver_prefix = "ccnx:/webserver";
int opt = 0;
while ((opt = getopt(argc, argv, "p:l:h")) != -1) {
switch (opt) {
case 'p':
root_folder = optarg;
break;
case 'l':
webserver_prefix = optarg;
break;
case 'h':
usage(argv[0]);
break;
}
}
if (!boost::filesystem::exists(boost::filesystem::path(root_folder))) {
// Try to create it
try {
if (!boost::filesystem::create_directories(boost::filesystem::path(root_folder))) {
throw boost::filesystem::filesystem_error("", boost::system::error_code());
}
} catch (boost::filesystem::filesystem_error) {
std::cerr << "The web root folder " << root_folder << " does not exist and its creation failed. Exiting.."
<< std::endl;
return (EXIT_FAILURE);
}
}
std::cout << "Using web root folder: [" << root_folder << "]" << std::endl;
std::cout << "Using locator: [" << webserver_prefix << "]" << std::endl;
boost::asio::io_service io_service;
HttpServer server(8080, webserver_prefix, 50, 5, 300, io_service);
// GET for the path /info
// Responds with some server info
server.resource["^/info$"]["GET"] = [](shared_ptr<Response> response, shared_ptr<Request> request) {
stringstream content_stream;
content_stream << "<h1>This webserver is able to reply to HTTP over TCP/ICN</h1>";
content_stream << request->getMethod() << " " << request->getPath() << " HTTP/" << request->getHttp_version()
<< "<br>";
for (auto &header: request->getHeader()) {
content_stream << header.first << ": " << header.second << "<br>";
}
//find length of content_stream (length received using content_stream.tellp())
content_stream.seekp(0, ios::end);
*response << "HTTP/1.1 200 OK\r\nContent-Length: " << content_stream.tellp() << "\r\n\r\n"
<< content_stream.rdbuf();
};
// Default GET-example. If no other matches, this anonymous function will be called.
// Will respond with content in the web/-directory, and its subdirectories.
// Default file: index.html
// Can for instance be used to retrieve an HTML 5 client that uses REST-resources on this server
server.default_resource["GET"] = [&server, &root_folder](shared_ptr<Response> response, shared_ptr<Request> request) {
const auto web_root_path = boost::filesystem::canonical(root_folder);
boost::filesystem::path path = web_root_path;
path /= request->getPath();
if (boost::filesystem::exists(path)) {
path = boost::filesystem::canonical(path);
//Check if path is within web_root_path
if (distance(web_root_path.begin(), web_root_path.end()) <= distance(path.begin(), path.end())
&& equal(web_root_path.begin(), web_root_path.end(), path.begin())) {
if (boost::filesystem::is_directory(path)) {
path /= "index.html";
} // default path
if (boost::filesystem::exists(path) && boost::filesystem::is_regular_file(path)) {
auto ifs = make_shared<ifstream>();
ifs->open(path.string(), ifstream::in | ios::binary);
if (*ifs) {
//read and send 1 MB at a time
streamsize buffer_size = 15 * 1024 * 1024;
auto buffer = make_shared < vector < char > > (buffer_size);
ifs->seekg(0, ios::end);
auto length = ifs->tellg();
ifs->seekg(0, ios::beg);
response->setResponseLength(length);
icn_httpserver::SocketRequest
*socket_request = dynamic_cast<icn_httpserver::SocketRequest *>(request.get());
if (socket_request) {
*response << "HTTP/1.0 200 OK\r\nContent-Length: " << length << "\r\n\r\n";
}
default_resource_send(server, response, ifs, buffer, length);
return;
}
}
}
}
string content = "Could not open path " + request->getPath();
*response << "HTTP/1.1 404 Not found\r\nContent-Length: " << content.length() << "\r\n\r\n" << content;
};
// Let the main thread to catch SIGINT and SIGQUIT
boost::asio::signal_set signals(io_service, SIGINT, SIGQUIT);
signals.async_wait(bind(afterSignal, &server, placeholders::_1));
thread server_thread([&server]() {
//Start server
server.start();
});
server_thread.join();
return 0;
}
} // end namespace std
int main(int argc, char **argv) {
return std::main(argc, argv);
}
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