Addition of login authentication for telnet debug CLI - currently username and password

are fixed as admin/skysql

modules/include/telnetd.h

@@ -0,0 +1,61 @@
+#ifndef _TELNETD_H
+#define _TELNETD_H
+/*
+ * This file is distributed as part of the SkySQL Gateway.  It is free
+ * software: you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation,
+ * version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright SkySQL Ab 2013
+ */
+
+/**
+ * @file telentd.h The telnetd protocol module header file
+ *
+ * @verbatim
+ * Revision History
+ *
+ * Date		Who		Description
+ * 17/07/13	Mark Riddoch	Initial implementation
+ *
+ * @endverbatim
+ */
+
+typedef struct	telnetd {
+	int	state;		/**< The connection state */
+	char	*username;	/**< The login name of the user */
+} TELNETD;
+
+#define	TELNETD_STATE_LOGIN	1	/**< Issued login prompt */
+#define TELNETD_STATE_PASSWD	2	/**< Issued password prompt */
+#define TELNETD_STATE_DATA	3	/**< User logged in */
+
+#define TELNET_SE               240 
+#define TELNET_NOP              241 
+#define TELNET_DATA_MARK        242 
+#define TELNET_BRK              243 
+#define TELNET_IP               244 
+#define TELNET_AO               245 
+#define TELNET_AYT              246 
+#define TELNET_EC               247 
+#define TELNET_EL               248 
+#define TELNET_GA               249 
+#define TELNET_SB               250 
+#define TELNET_WILL             251 
+#define TELNET_WONT             252 
+#define TELNET_DO               253 
+#define TELNET_DONT             254 
+#define TELNET_IAC              255 
+#define TELNET_ECHO               1 
+#define TELNET_SUPPRESS_GO_AHEAD  3 
+
+#endif

modules/protocol/telnetd.c

@@ -31,6 +31,7 @@
 #include <poll.h>
 #include <atomic.h>
 #include <gw.h>
+#include <telnetd.h>
 
 /**
  * @file telnetd.c - telnet daemon protocol module
@@ -48,12 +49,12 @@
  * Revision History
  * Date		Who			Description
  * 17/06/2013	Mark Riddoch		Initial version
+ * 17/07/2013	Mark Riddoch		Addition of login phase
  *
  * @endverbatim
  */
-#define	TELNET_IAC	255
 
-static char *version_str = "V1.0.0";
+static char *version_str = "V1.0.1";
 
 static int telnetd_read_event(DCB* dcb);
 static int telnetd_write_event(DCB *dcb);
@@ -81,8 +82,9 @@ static GWPROTOCOL MyObject = {
 	NULL					/**< Session			 */
 	};
 
-static void
+static void telnetd_command(DCB *, unsigned char *cmd);
-telnetd_command(DCB *, char *cmd);
+static void telnetd_echo(DCB *dcb, int enable);
+static int  password_verify(char *, char *);
 
 /**
  * Implementation of the mandatory version entry point
@@ -134,20 +136,52 @@ SESSION		*session = dcb->session;
 ROUTER_OBJECT	*router = session->service->router;
 ROUTER		*router_instance = session->service->router_instance;
 void		*rsession = session->router_session;
+TELNETD		*telnetd = (TELNETD *)dcb->protocol;
+char		*password;
 
 	if ((n = dcb_read(dcb, &head)) != -1)
 	{
 		dcb->state = DCB_STATE_PROCESSING;
 		if (head)
 		{
-			char *ptr = GWBUF_DATA(head);
+			unsigned char *ptr = GWBUF_DATA(head);
 			ptr = GWBUF_DATA(head);
-			if (*ptr == TELNET_IAC)
+			while (*ptr == TELNET_IAC)
 			{
 				telnetd_command(dcb, ptr + 1);
-				GWBUF_CONSUME(head, 2);
+				GWBUF_CONSUME(head, 3);
+				ptr = GWBUF_DATA(head);
 			}
+			if (GWBUF_LENGTH(head))
+			{
+				switch (telnetd->state)
+				{
+				case TELNETD_STATE_LOGIN:
+					telnetd->username = strndup(GWBUF_DATA(head), GWBUF_LENGTH(head));
+					telnetd->state = TELNETD_STATE_PASSWD;
+					dcb_printf(dcb, "Password: ");
+					telnetd_echo(dcb, 0);
+					break;
+				case TELNETD_STATE_PASSWD:
+					password = strndup(GWBUF_DATA(head), GWBUF_LENGTH(head));
+					if (password_verify(telnetd->username, password))
+					{
+						telnetd_echo(dcb, 1);
+						telnetd->state = TELNETD_STATE_DATA;
+						dcb_printf(dcb, "\n\nMaxScale> ");
+					}
+					else
+					{
+						dcb_printf(dcb, "\n\rLogin incorrect\n\rLogin: ");
+						telnetd_echo(dcb, 1);
+						telnetd->state = TELNETD_STATE_LOGIN;
+					}
+					break;
+				case TELNETD_STATE_DATA:
 					router->routeQuery(router_instance, rsession, head);
+					break;
+				}
+			}
 		}
 	}
 	dcb->state = DCB_STATE_POLLING;
@@ -234,6 +268,7 @@ int	n_connect = 0;
 			client->session = session_alloc(dcb->session->service, client);
 
 			client->state = DCB_STATE_IDLE;
+			client->protocol = malloc(sizeof(TELNETD));
 
 			if (poll_add_dcb(client) == -1)
 			{
@@ -241,7 +276,8 @@ int	n_connect = 0;
 			}
 			n_connect++;
 
-			dcb_printf(client, "Gateway> ");
+			((TELNETD *)(client->protocol))->state = TELNETD_STATE_LOGIN;
+			dcb_printf(client, "MaxScale login: ");
 			client->state = DCB_STATE_POLLING;
 		}
 	}
@@ -325,6 +361,51 @@ short			pnum;
  * @param	cmd	The command stream
  */
 static void
-telnetd_command(DCB *dcb, char *cmd)
+telnetd_command(DCB *dcb, unsigned char *cmd)
 {
 }
+
+/**
+ * Enable or disable telnet protocol echo
+ *
+ * @param dcb		DCB of the telnet connection
+ * @param enable	Enable or disable echo functionality
+ */
+static void
+telnetd_echo(DCB *dcb, int enable)
+{
+GWBUF	*gwbuf;
+char	*buf;
+
+	if ((gwbuf = gwbuf_alloc(3)) == NULL)
+		return;
+	buf = GWBUF_DATA(gwbuf);
+	buf[0] = TELNET_IAC;
+	buf[1] = enable ? TELNET_WONT : TELNET_WILL;
+	buf[2] = TELNET_ECHO;
+	dcb_write(dcb, gwbuf);
+}
+
+/**
+ * Verify a username and password
+ *
+ * @param username	Username to verify
+ * @param password	Password to verify
+ * @return Non-zero if the username/password combination is valid
+ */
+static int
+password_verify(char *username, char *password)
+{
+char	*t;
+
+	/* Strip the cr/lf from the username and password */
+	t = strstr(username, "\r\n");
+	if (t)
+		*t = 0;
+	t = strstr(password, "\r\n");
+	if (t)
+		*t = 0;
+	if (strcmp(username, "admin") == 0 && strcmp(password, "skysql") == 0)
+		return 1;
+	return 0;
+}

modules/routing/readwritesplit/readwritesplit.c

@@ -23,10 +23,8 @@
 
 #include <stdlib.h>
 #include <mysql.h>
-#if defined(SS_DEBUG)
 #include <skygw_utils.h>
 #include <log_manager.h>
-#endif
 #include <query_classifier.h>
 #include <dcb.h>
 #include <spinlock.h>