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How to make the in-game shop (web browser) automatically login a player on your website

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This is a little tutorial on how to connect the game to the item shop of your website.

By clicking on the coin in the game client the web browser will be opened and connected to your website.

I'll explain how to automatically login the player to the item shop :)


First of all open cmd_general.cpp and look for do_in_game_mall and replace the whole function with this


		char buf[512+1];
		char sas[33];
		MD5_CTX ctx;

		const char secretKey[] = "my secret key"; // <<--- EDIT THIS!!!
		const char websiteUrl[] = "http://mywebsite/shop"; // <<--- EDIT THIS!!!

		snprintf(buf, sizeof(buf), "%u%s", ch->GetAID(), secretKey);

		MD5Update(&ctx, (const unsigned char *) buf, strlen(buf));
#ifdef __FreeBSD__
		MD5End(&ctx, sas);
		static const char hex[] = "0123456789abcdef";
		unsigned char digest[16];
		MD5Final(digest, &ctx);
		int i;
		for (i = 0; i < 16; ++i) {
			sas[i+i] = hex[digest[i] >> 4];
			sas[i+i+1] = hex[digest[i] & 0x0f];
		sas[i+i] = '\0';

		snprintf(buf, sizeof(buf), "mall %s?aid=%u&secret=%s", websiteUrl, ch->GetAID(), sas);

		ch->ChatPacket(CHAT_TYPE_COMMAND, buf);


Edit secretKey and websiteUrl with your information. The key can be a random string.


What happens is the following:

  • aid = account id
  • secret = md5( account id + your secret key )


So your website you can check if the secret is corrent and then login the player. You can do something like this:



$secretKey = $_GET['secret'];
$accountId = $_GET['aid'];

$generatedSecret = md5($accountId . $secretKey);

if ($generatedSecret == $secretKey) {
    // ok, proceed with login
} else {
    // invalid secret


Edited by Cappuccino
  • Good 2
Link to post
  • Cappuccino changed the title to How to make the in-game shop (web browser) automatically login a player on your website

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