rawhttps/src/server.c at master · felipeek/rawhttps · GitHub

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/***

* _____

* / ____|

* | (___ ___ _ ____ _____ _ __

* \___ \ / _ \ '__\ \ / / _ \ '__|

* ____) | __/ | \ V / __/ |

* |_____/ \___|_| \_/ \___|_|

#include "server.h"

#include "tls/tls.h"

#include "tls/tls_parser.h"

#include "common.h"

#include <netinet/tcp.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <pthread.h>

#include <errno.h>

#include <memory.h>

#include <unistd.h>

#include <stdio.h>

#include <stdlib.h>

#include "logger.h"

#include "http/http_parser.h"

#define RAWHTTPS_SERVER_MAX_QUEUE_SERVER_PENDING_CONNECTIONS 5

typedef struct {

rawhttps_server* server;

struct sockaddr_in client_address;

int connected_socket;

} rawhttps_connection;

int rawhttps_server_init(rawhttps_server* server, int port, const char* certificate_path, const char* private_key_path)

{

if (rawhttps_handler_tree_create(&server->handlers, 16 /* change me */)) return -1;

server->sockfd = socket(AF_INET, SOCK_STREAM, 0);

if (server->sockfd == -1)

{

rawhttps_logger_log_error("Error creating server socket: %s", strerror(errno));

return -1;

}

// workaround for dev purposes (avoiding error binding socket: Address already in use)

int option = 1;

setsockopt(server->sockfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));

option = 1;

setsockopt(server->sockfd, IPPROTO_TCP, TCP_NODELAY, &option, sizeof(option));

int keepalive = 1;

setsockopt(server->sockfd, SOL_SOCKET, SO_KEEPALIVE, &keepalive , sizeof(keepalive ));

struct sockaddr_in server_address;

memset(&server_address, 0, sizeof(struct sockaddr_in));

server_address.sin_family = AF_INET;

server_address.sin_addr.s_addr = INADDR_ANY;

server_address.sin_port = htons(port);

if (bind(server->sockfd, (struct sockaddr*)&server_address, sizeof(server_address)) == -1)

{

rawhttps_logger_log_error("Error binding server socket: %s", strerror(errno));

return -1;

}

server->port = port;

server->initialized = true;

int err = 0;

server->certificate = asn1_parse_pem_certificate_from_file(certificate_path, 0);

if (err) {

rawhttps_logger_log_error("Error parsing PEM certificate from file (path: %s)", certificate_path);

return -1;

}

server->private_key = asn1_parse_pem_private_certificate_key_from_file(private_key_path, &err);

if (err) {

rawhttps_logger_log_error("Error parsing PEM private key from file (path: %s)", private_key_path);

asn1_pem_certificate_free(server->certificate);

return -1;

}

return 0;

}

int rawhttps_server_destroy(rawhttps_server* server)

{

// Note: Calling this function will not kill running threads

// The server socket will be released, causing the listen thread to eventually stop

// But there may be other threads running with opened connections

// @TODO: This should be fixed asap. Then the log mutex can also be destroyed.

if (server->initialized)

{

asn1_pem_certificate_free(server->certificate);

private_key_free(server->private_key);

shutdown(server->sockfd, SHUT_RDWR);

close(server->sockfd);

rawhttps_handler_tree_destroy(&server->handlers);

}

return 0;

}

static void* rawhttps_server_new_connection_callback(void* arg)

{

rawhttps_connection* connection = (rawhttps_connection*)arg;

char* client_ip_ascii = inet_ntoa(connection->client_address.sin_addr);

rawhttps_logger_log_info("Connection established with client %s.", client_ip_ascii);

rawhttps_tls_state ts;

if (rawhttps_tls_state_create(&ts, connection->server->certificate, connection->server->private_key))

{

rawhttps_logger_log_error("Error creating tls state");

return NULL;

}

if (rawhttps_tls_handshake(&ts, connection->connected_socket))

{

rawhttps_logger_log_error("Error in TLS handshake. Connection with client %s will be destroyed.", client_ip_ascii);

rawhttps_tls_state_destroy(&ts);

return NULL;

}

// In the future, if we want to support keep-alive, we need to add a loop here.

// We would need to differ between a CLOSE_NOTIFY and a real error

rawhttps_http_parser_state hps;

rawhttps_request request;

rawhttps_http_parser_state_create(&hps, &ts);

if (rawhttps_parser_parse(&hps, &request, connection->connected_socket))

{

rawhttps_logger_log_error("Error parsing HTTP packet. Connection was dropped or syntax was invalid. Connection with client %s will be destroyed.", client_ip_ascii);

return NULL;

}

const rawhttps_server_handler* handler = rawhttps_handler_tree_get(&connection->server->handlers, request.uri, request.uri_size);

if (handler)

{

rawhttps_response response;

if (rawhttps_response_new(&response))

{

rawhttps_header_destroy(&request.header);

rawhttps_http_parser_state_destroy(&hps);

rawhttps_tls_state_destroy(&ts);

rawhttps_logger_log_error("Error creating new HTTP response");

return NULL;

}

rawhttps_response_connection_information rci;

rci.connected_socket = connection->connected_socket;

rci.ts = &ts;

handler->handle(&rci, &request, &response);

if (rawhttps_response_destroy(&response))

{

rawhttps_header_destroy(&request.header);

rawhttps_http_parser_state_destroy(&hps);

rawhttps_tls_state_destroy(&ts);

rawhttps_logger_log_error("Error destroying HTTP response");

return NULL;

}

else

{

char buf[] = "HTTP/1.0 404 Not Found\n"

"Connection: Keep-Alive\n"

"Content-Length: 9\n"

"\n"

"404 Error";

write(request.connected_socket, buf, sizeof(buf) - 1);

}

if (rawhttps_tls_close(&ts, connection->connected_socket))

rawhttps_logger_log_error("Error closing TLS connection");

rawhttps_header_destroy(&request.header);

rawhttps_http_parser_state_destroy(&hps);

rawhttps_tls_state_destroy(&ts);

close(connection->connected_socket);

free(connection);

rawhttps_logger_log_info("Connection with client %s was closed successfully.", client_ip_ascii);

return NULL;

}

int rawhttps_server_listen(rawhttps_server* server)

{

if (listen(server->sockfd, RAWHTTPS_SERVER_MAX_QUEUE_SERVER_PENDING_CONNECTIONS) == -1)

{

rawhttps_logger_log_error("Error listening to server socket: %s", strerror(errno));

return -1;

}

struct sockaddr_in client_address;

//long number_of_processors = sysconf(_SC_NPROCESSORS_ONLN);

//if (number_of_processors == -1) number_of_processors = 1;

//rawhttps_logger_log_info("Processors available: %d", number_of_processors);

while (1)

{

socklen_t client_address_length = sizeof(client_address);

int connected_socket = accept(server->sockfd, (struct sockaddr*)&client_address, &client_address_length);

if (connected_socket == -1)

{

if (errno == EBADF)

return 0; // Server socket was closed. Exiting gracefully..

rawhttps_logger_log_error("Error accepting connected socket: %s", strerror(errno));

return -1;

}

pthread_t connection_thread;

rawhttps_connection* connection = malloc(sizeof(rawhttps_connection));

connection->server = server;

connection->connected_socket = connected_socket;

connection->client_address = client_address;

if (pthread_create(&connection_thread, NULL, rawhttps_server_new_connection_callback, connection))

{

rawhttps_logger_log_error("Error creating thread for new connection: %s", strerror(errno));

return -1;

}

return 0;

}

int rawhttps_server_register_handle(rawhttps_server* server, const char* pattern, long long pattern_size, rawhttps_server_handle_func handle)

{

return rawhttps_handler_tree_put(&server->handlers, pattern, pattern_size, handle);

}

rawhttps/src/server.c at master · felipeek/rawhttps · GitHub

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