Commit e90ea9c2 authored by James Allenby's avatar James Allenby
Browse files

Initial commit

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# This file is used to ignore files which are generated
# ----------------------------------------------------------------------------
*~
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*.a
*.core
*.moc
*.o
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*.rej
*.so
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*_pch.h.cpp
*_resource.rc
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.#*
*.*#
core
!core/
tags
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*.debug
Makefile*
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*.app
moc_*.cpp
ui_*.h
qrc_*.cpp
Thumbs.db
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# qtcreator generated files
*.pro.user*
# xemacs temporary files
*.flc
# Vim temporary files
.*.swp
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*.ib_pdb_index
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# MinGW generated files
*.Debug
*.Release
# Python byte code
*.pyc
# Binaries
# --------
*.dll
*.exe
cmake_minimum_required(VERSION 2.8)
project(SimpleSocket)
set(CMAKE_CXX_STANDARD "17")
add_executable(${PROJECT_NAME} "main.cc" "httpresponse.cc")
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE QtCreatorProject>
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#include "httpresponse.h"
namespace HTTPResponse
{
}
#ifndef HTTPRESPONSE_H
#define HTTPRESPONSE_H
#include <string>
namespace HTTPResponse
{
struct HTTPResponse
{
std::string http_version;
std::string status_code;
std::string reason_phrase;
};
}
#endif // HTTPRESPONSE_H
// This code conforms to RFC7230 HTTP/1.1
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <array>
#include <map>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
enum class HTTPMethod {
GET,
HEAD,
POST,
PUT,
DELETE,
CONNECT,
OPTIONS,
TRACE
};
struct HTTPRequest
{
HTTPMethod method;
std::string uri;
std::string http_version;
std::vector<std::string> fields;
std::string payload;
};
int ConvertToHTTPRequest(std::string input, HTTPRequest* output = nullptr)
{
// Store the position of request header end
// Complies with RFC7230 Section 3
size_t header_end_position = input.find("\r\n\r\n");
// Fail if unable to find request header end
if (header_end_position == std::string::npos)
{
std::cerr << "Could not find end of request header" << std::endl;
return -1;
}
// Store the start_line of the HTTP request
size_t start_line_end = input.find("\r\n", 0);
std::string start_line = input.substr(0, start_line_end);
// Store vector of other header fields and set the current position correctly
// Set current_position to (start_line_end + 2), accounting for CRLF sequence
std::vector<std::string> header_fields;
size_t current_position = start_line_end + 2;
// Process the header fields and store them into an array while we are not
// past the header end position.
while (current_position < header_end_position)
{
// Find the next line break sequence and store
size_t header_field_length = input.find("\r\n", current_position);
header_fields.push_back(input.substr(current_position, header_field_length - current_position));
// Set current position to field length + 2 to account for CRLF sequence
current_position = header_field_length + 2;
}
if (output)
{
// Process method
size_t method_end_position = start_line.find(" ", 0);
if (method_end_position == std::string::npos)
{
std::cerr << "Malformed start line" << std::endl;
return -1;
}
size_t uri_end_position = start_line.find(" ", method_end_position + 1);
if (uri_end_position == std::string::npos)
{
std::cerr << "Malformed start line" << std::endl;
return -1;
}
std::string method_string = start_line.substr(0, method_end_position);
if (method_string == "GET")
output->method = HTTPMethod::GET;
else if (method_string == "HEAD")
output->method = HTTPMethod::HEAD;
else if (method_string == "POST")
output->method = HTTPMethod::POST;
else if (method_string == "PUT")
output->method = HTTPMethod::PUT;
else if (method_string == "DELETE")
output->method = HTTPMethod::DELETE;
else if (method_string == "CONNECT")
output->method = HTTPMethod::CONNECT;
else if (method_string == "OPTIONS")
output->method = HTTPMethod::OPTIONS;
else if (method_string == "TRACE")
output->method = HTTPMethod::TRACE;
else
{
std::cerr << "Unknown request method" << std::endl;
return -1;
}
// Process URI
std::string uri_string = start_line.substr(method_end_position + 1, start_line.size() - 9 - method_end_position);
// Process HTTP version
std::string http_version_string = start_line.substr(uri_end_position + 1, start_line.size() - uri_end_position);
output->uri = uri_string;
output->http_version = http_version_string;
output->fields = header_fields;
}
return 0;
}
void SendIndexPage(int connectionfd)
{
std::ifstream index_page("index.html");
std::string index_page_source((std::istreambuf_iterator<char>(index_page)),
std::istreambuf_iterator<char>());
write(connectionfd, index_page_source.c_str(), index_page_source.size());
}
int main()
{
// std::string payload_test = "GET /fucked/dsfdsiuhfsd/sdfsd/sdfsd%20 HTTP/1.1\r\n"
// "Host: CurlSomething\r\n"
// "\r\n"
// "dsfsdiojfiodsjsdfojsdoif_dspijfids";
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
{
std::cerr << "Error creating socket" << std::endl;
std::exit(EXIT_FAILURE);
}
sockaddr_in server_options = {};
server_options.sin_family = AF_INET;
server_options.sin_addr.s_addr = INADDR_ANY;
server_options.sin_port = htons(10000);
if (bind(sockfd, reinterpret_cast<sockaddr*>(&server_options), sizeof(server_options)) < 0)
{
std::cerr << "Unable to bind address to socket" << std::endl;
std::exit(EXIT_FAILURE);
}
if (listen(sockfd, SOMAXCONN))
{
std::cerr << "Unable to listen on socket" << std::endl;
std::exit(EXIT_FAILURE);
}
while (true)
{
sockaddr_in client_address = {};
socklen_t client_length = 0;
int connectionfd = accept(sockfd, reinterpret_cast<sockaddr*>(&client_address), &client_length);
char incoming_data_buffer[8192];
ssize_t buffer_len = read(connectionfd, &incoming_data_buffer, 8192);
std::string incoming_request(incoming_data_buffer, buffer_len);
HTTPRequest req;
ConvertToHTTPRequest(incoming_request, &req);
std::cout << "Client requested URI: " << req.uri << std::endl;
std::for_each(req.fields.begin(), req.fields.end(), [](std::string field){
std::cout << field << std::endl;
});
SendIndexPage(connectionfd);
usleep(100000);
close(connectionfd);
}
close(sockfd);
return 0;
}
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