pull/1469/head
Dean Camera
15 years ago
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77e86e7d82
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16ea5aa7a2
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* TELNET Webserver Application. When connected to the uIP stack,
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* this will serve out connection information to the client.
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*/
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#define INCLUDE_FROM_TELNETSERVERAPP_C
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#include "TELNETServerApp.h"
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/** Welcome message to send to a TELNET client when a connection is first made. */
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char PROGMEM WelcomeHeader[] = "********************************************\r\n"
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"* LUFA uIP Webserver (TELNET) *\r\n"
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"********************************************\r\n";
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/** Main TELNET menu, giving the user the list of available commands they may issue */
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char PROGMEM TELNETMenu[] = "\r\n"
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" Available Commands:\r\n"
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" c) List Active TCP Connections\r\n"
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"\r\nCommand>";
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/** Initialization function for the simple HTTP webserver. */
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void TELNETServerApp_Init(void)
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{
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/* Listen on port 23 for TELNET connections from hosts */
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uip_listen(HTONS(TELNET_SERVER_PORT));
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}
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/** uIP stack application callback for the TELNET server. This function must be called each time the
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* TCP/IP stack needs a TCP packet to be processed.
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*/
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void TELNETServerApp_Callback(void)
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{
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uip_tcp_appstate_t* const AppState = &uip_conn->appstate;
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char* const AppData = (char*)uip_appdata;
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if (uip_connected())
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{
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AppState->TELNETServer.CurrentState = TELNET_STATE_SendHeader;
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}
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if (uip_acked())
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{
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AppState->TELNETServer.CurrentState = AppState->TELNETServer.NextState;
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}
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if (uip_rexmit() || uip_acked() || uip_newdata() || uip_connected() || uip_poll())
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{
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switch (AppState->TELNETServer.CurrentState)
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{
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case TELNET_STATE_SendHeader:
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/* Copy over and send the TELNET welcome message upon first connection */
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strncpy_P(AppData, WelcomeHeader, strlen_P(WelcomeHeader));
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uip_send(AppData, strlen_P(WelcomeHeader));
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AppState->TELNETServer.NextState = TELNET_STATE_SendMenu;
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break;
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case TELNET_STATE_SendMenu:
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/* Copy over and send the TELNET menu to the client */
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strncpy_P(AppData, TELNETMenu, strlen_P(TELNETMenu));
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uip_send(AppData, strlen_P(TELNETMenu));
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AppState->TELNETServer.NextState = TELNET_STATE_GetCommand;
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break;
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case TELNET_STATE_GetCommand:
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if (!(uip_datalen()))
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break;
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/* Save the issued command for later processing */
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AppState->TELNETServer.IssuedCommand = AppData[0];
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AppState->TELNETServer.CurrentState = TELNET_STATE_SendResponse;
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break;
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case TELNET_STATE_SendResponse:
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/* Determine which command was issued, perform command processing */
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switch (AppState->TELNETServer.IssuedCommand)
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{
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case 'c':
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TELNETServerApp_DisplayTCPConnections();
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break;
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}
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AppState->TELNETServer.NextState = TELNET_STATE_SendMenu;
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break;
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}
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}
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}
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/** Sends a list of active TCP connections to the TELNET client. */
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static void TELNETServerApp_DisplayTCPConnections(void)
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{
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char* const AppData = (char*)uip_appdata;
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strcpy(AppData, "\r\n* Current TCP Connections: *\r\n");
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uint16_t ResponseLen = strlen(AppData);
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uint8_t ActiveConnCount = 0;
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/* Loop through the complete uIP TCP connections list, looking for active connections */
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for (uint8_t i = 0; i < UIP_CONNS; i++)
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{
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struct uip_conn* CurrConnection = &uip_conns[i];
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/* If the connection is not closed, it is active and must be added to the out buffer */
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if (CurrConnection->tcpstateflags != UIP_CLOSED)
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{
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/* Add the current connection's details to the out buffer */
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ResponseLen += sprintf(&AppData[ResponseLen], "%u) %02d.%02d.%02d.%02d (Local %u, Remote %u)\r\n",
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++ActiveConnCount, CurrConnection->ripaddr.u8[0],
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CurrConnection->ripaddr.u8[1],
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CurrConnection->ripaddr.u8[2],
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CurrConnection->ripaddr.u8[3],
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HTONS(CurrConnection->lport), HTONS(CurrConnection->rport));
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}
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}
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uip_send(AppData, ResponseLen);
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}
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@ -0,0 +1,68 @@
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
|
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Header file for TELNETServerApp.c.
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*/
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#ifndef _TELNETSERVER_APP_H_
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#define _TELNETSERVER_APP_H_
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/* Includes: */
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#include <avr/pgmspace.h>
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#include <string.h>
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#include <stdio.h>
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#include <uip.h>
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/* Macros: */
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/** TCP listen port for incomming TELNET traffic */
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#define TELNET_SERVER_PORT 23
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/* Enums: */
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/** States for each TELNET connection to the server. */
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enum TELNET_States_t
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{
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TELNET_STATE_SendHeader, /**< Currently sending welcome header to the client */
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TELNET_STATE_SendMenu, /**< Currently sending the command list menu to the client */
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TELNET_STATE_GetCommand, /**< Currently waiting for a command from the client */
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TELNET_STATE_SendResponse, /**< Processing the issued command and sending a response */
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};
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/* Function Prototypes: */
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void TELNETServerApp_Init(void);
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void TELNETServerApp_Callback(void);
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#if defined(INCLUDE_FROM_TELNETSERVERAPP_C)
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static void TELNETServerApp_DisplayTCPConnections(void);
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#endif
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#endif
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