#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/sendfile.h>

int main() {
	int port = 8080;

	int server_soc = socket(AF_INET, SOCK_STREAM, 0);
	if (server_soc == -1) {
		printf("ERROR: Failed to open socket: %s", strerror(errno));
		return -1;
	}

	struct sockaddr_in addr = {
		.sin_family = AF_INET,
		.sin_port = htons(port),
		.sin_addr = 0
	};
	if (bind(server_soc, (struct sockaddr*)&addr, sizeof(addr))) {
		printf("ERROR: Failed to bind: %s", strerror(errno));
		return -1;
	}

	if (listen(server_soc, 10)) {
		printf("ERROR: Failed to listen: %s", strerror(errno));
		return -1;
	}

	int client_soc = accept(server_soc, NULL, NULL);

	char buffer[256];
	int byte_count = recv(client_soc, buffer, sizeof(buffer), 0);

	char *filename = buffer + 5;
	char *space = strchr(filename, ' ');
	space[0] = 0;

	int file_fd = open(filename, O_RDONLY);
	sendfile(client_soc, file_fd, 0, 256);
	close(file_fd);

	close(client_soc);
	close(server_soc);
	return 0;
}