From d33fabf0c5e1ea9a4e3118836dc459fa971d7a1d Mon Sep 17 00:00:00 2001
From: Plex <thinkplex@riseup.net>
Date: Mon, 25 Oct 2021 03:41:36 +0200
Subject: socket connected

---
 mcping.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 52 insertions(+), 8 deletions(-)

(limited to 'mcping.c')

diff --git a/mcping.c b/mcping.c
index 24e979f..0f28346 100644
--- a/mcping.c
+++ b/mcping.c
@@ -3,30 +3,74 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <arpa/inet.h>
 #include "mctypes.h"
 
 int main(int argc, char *argv[])
 {
+	char *port_s, *address = argv[1];
+	unsigned short port;
+	int protocol_ver;
+	int p_flag = 0;
 	if (argc == 1) {
 		printf("Usage: mcping [ADDRESS[:PORT]]\nPings a Minecraft server using the PING protocol.\n");
 		exit(EXIT_SUCCESS);
 	}
 	int opt;
-	while ((opt = getopt(argc, argv, "h")) != -1) {
+	while ((opt = getopt(argc, argv, "hp:")) != -1) {
 		switch (opt) {
 			case 'h':
 				exit(EXIT_SUCCESS);
+			case 'p':
+				protocol_ver = atoi(optarg);
+				p_flag = 1;
+				break;
 			default:
 				break;
 		}
 	}
-	varint n, m;
-	m = n = writeVarInt(atoi(argv[1]));
-	while((*n & 0b10000000) != 0) {
-		printf("%02X ", *n);
-		n++;
+	if((port_s = strchr(address, ':')) != NULL) {
+		address[strlen(address)-strlen(port_s)] = '\0';
+		port_s++;
+	} else
+		port_s = "25565";
+	if(p_flag == 0) {
+		protocol_ver = 756;
 	}
-	printf("%02X\n", *n);
-	printf("%d\n", readVarInt(m));
+	port = atoi(port_s);
+
+	int s;
+	if((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+		perror("bad socket\n");
+
+	struct addrinfo *mc_info = malloc(sizeof(struct addrinfo));
+	memset(mc_info, 0, sizeof(struct addrinfo));
+	struct addrinfo hints;
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_family = AF_INET;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_protocol = IPPROTO_TCP;
+	if(getaddrinfo(address, "80", &hints, &mc_info) != 0)
+		perror("bad addrinfo\n");
+
+	struct sockaddr_in mc_sock;
+	mc_sock.sin_family = AF_INET;
+	mc_sock.sin_port = htons(port);
+	memcpy(&mc_sock.sin_addr, mc_info->ai_addr->sa_data+2, mc_info->ai_addrlen); // stupidity
+
+	if(connect(s, (struct sockaddr *)&mc_sock, sizeof(mc_sock)) < 0)
+		perror("connection failed\n");
+
+	handshake hs = {
+		writeVarInt(protocol_ver),
+		writeVarInt(strlen(address)),
+		address,
+		port,
+		writeVarInt(1)
+	};
+	// printf("%02X\n", );
 	return 0;
 }
-- 
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