add xchat r1489

src/common/identd.c

@@ -0,0 +1,89 @@
+/* simple identd server for xchat under win32 */
+
+
+static int identd_is_running = FALSE;
+
+
+static int
+identd (char *username)
+{
+	int sok, read_sok, len;
+	char *p;
+	char buf[256];
+	char outbuf[256];
+	struct sockaddr_in addr;
+
+	sok = socket (AF_INET, SOCK_STREAM, 0);
+	if (sok == INVALID_SOCKET)
+	{
+		free (username);
+		return 0;
+	}
+
+	len = 1;
+	setsockopt (sok, SOL_SOCKET, SO_REUSEADDR, (char *) &len, sizeof (len));
+
+	memset (&addr, 0, sizeof (addr));
+	addr.sin_family = AF_INET;
+	addr.sin_port = htons (113);
+
+	if (bind (sok, (struct sockaddr *) &addr, sizeof (addr)) == SOCKET_ERROR)
+	{
+		closesocket (sok);
+		free (username);
+		return 0;
+	}
+
+	if (listen (sok, 1) == SOCKET_ERROR)
+	{
+		closesocket (sok);
+		free (username);
+		return 0;
+	}
+
+	len = sizeof (addr);
+	read_sok = accept (sok, (struct sockaddr *) &addr, &len);
+	closesocket (sok);
+	if (read_sok == INVALID_SOCKET)
+	{
+		free (username);
+		return 0;
+	}
+
+	identd_is_running = FALSE;
+
+	snprintf (outbuf, sizeof (outbuf), "%%\tServicing ident request from %s\n",
+				 inet_ntoa (addr.sin_addr));
+	PrintText (current_sess, outbuf);
+
+	recv (read_sok, buf, sizeof (buf) - 1, 0);
+	buf[sizeof (buf) - 1] = 0;	  /* ensure null termination */
+
+	p = strchr (buf, ',');
+	if (p)
+	{
+		snprintf (outbuf, sizeof (outbuf) - 1, "%d, %d : USERID : UNIX : %s\r\n",
+					 atoi (buf), atoi (p + 1), username);
+		outbuf[sizeof (outbuf) - 1] = 0;	/* ensure null termination */
+		send (read_sok, outbuf, strlen (outbuf), 0);
+	}
+
+	sleep (1);
+	closesocket (read_sok);
+	free (username);
+
+	return 0;
+}
+
+static void
+identd_start (char *username)
+{
+	DWORD tid;
+
+	if (identd_is_running == FALSE)
+	{
+		identd_is_running = TRUE;
+		CloseHandle (CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) identd,
+						 strdup (username), 0, &tid));
+	}
+}