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file_upload.cpp
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/*
This file is part of libhttpserver
Copyright (C) 2011, 2012, 2013, 2014, 2015 Sebastiano Merlino
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
*/
#include <iostream>
#include <httpserver.hpp>
class file_upload_resource : public httpserver::http_resource {
public:
std::shared_ptr<httpserver::http_response> render_GET(const httpserver::http_request&) {
std::string get_response = "<html>\n";
get_response += " <body>\n";
get_response += " <form method=\"POST\" enctype=\"multipart/form-data\">\n";
get_response += " <h1>Upload 1 (key is 'files', multiple files can be selected)</h1><br>\n";
get_response += " <input type=\"file\" name=\"files\" multiple>\n";
get_response += " <br><br>\n";
get_response += " <h1>Upload 2 (key is 'files2', multiple files can be selected)</h1><br>\n";
get_response += " <input type=\"file\" name=\"files2\" multiple><br><br>\n";
get_response += " <input type=\"submit\" value=\"Upload\">\n";
get_response += " </form>\n";
get_response += " </body>\n";
get_response += "</html>\n";
return std::shared_ptr<httpserver::http_response>(new httpserver::string_response(get_response, 200, "text/html"));
}
std::shared_ptr<httpserver::http_response> render_POST(const httpserver::http_request& req) {
std::string post_response = "<html>\n";
post_response += "<head>\n";
post_response += " <style>\n";
post_response += " table, th, td {\n";
post_response += " border: 1px solid black;\n";
post_response += " border-collapse: collapse;\n";
post_response += " }\n";
post_response += " </style>\n";
post_response += "</head>\n";
post_response += "<body>\n";
post_response += " Uploaded files:\n";
post_response += " <br><br>\n";
post_response += " <table>\n";
post_response += " <tr>\n";
post_response += " <th>Key</th>\n";
post_response += " <th>Uploaded filename</th>\n";
post_response += " <th>File system path</th>\n";
post_response += " <th>File size</th>\n";
post_response += " <th>Content type</th>\n";
post_response += " <th>Transfer encoding</th>\n";
post_response += " </tr>\n";
for (auto &file_key : req.get_files()) {
for (auto &files : file_key.second) {
post_response += " <tr><td>";
post_response += file_key.first;
post_response += "</td><td>";
post_response += files.first;
post_response += "</td><td>";
post_response += files.second.get_file_system_file_name();
post_response += "</td><td>";
post_response += std::to_string(files.second.get_file_size());
post_response += "</td><td>";
post_response += files.second.get_content_type();
post_response += "</td><td>";
post_response += files.second.get_transfer_encoding();
post_response += "</td></tr>\n";
}
}
post_response += " </table><br><br>\n";
post_response += " <a href=\"/\">back</a>\n";
post_response += "</body>\n</html>";
return std::shared_ptr<httpserver::http_response>(new httpserver::string_response(post_response, 201, "text/html"));
}
};
int main(int argc, char** argv) {
// this example needs a directory as parameter
if (2 != argc) {
std::cout << "Usage: file_upload <upload_dir>" << std::endl;
std::cout << std::endl;
std::cout << " file_upload: writeable directory where uploaded files will be stored" << std::endl;
return -1;
}
std::cout << "CAUTION: this example will create files in the directory " << std::string(argv[1]) << std::endl;
std::cout << "These files won't be deleted at termination" << std::endl;
std::cout << "Please make sure, that the given directory exists and is writeable" << std::endl;
httpserver::webserver ws = httpserver::create_webserver(8080)
.no_put_processed_data_to_content()
.file_upload_dir(std::string(argv[1]))
.generate_random_filename_on_upload()
.file_upload_target(httpserver::FILE_UPLOAD_DISK_ONLY);
file_upload_resource fur;
ws.register_resource("/", &fur);
ws.start(true);
return 0;
}