libhttpserver/examples/file_upload.cpp at master · ianymchen/libhttpserver · GitHub

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This file is part of libhttpserver

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:

const 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"));

}

const 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;

}

libhttpserver/examples/file_upload.cpp at master · ianymchen/libhttpserver · GitHub

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