Squashed 'lib/lufa/' content from commit 385d40300

git-subtree-dir: lib/lufa
git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b

1 files changed, 163 insertions, 0 deletions

diff --git a/Projects/Webserver/Lib/TELNETServerApp.c b/Projects/Webserver/Lib/TELNETServerApp.c
new file mode 100644
index 000000000..4500a4b78
--- /dev/null
+++ b/Projects/Webserver/Lib/TELNETServerApp.c
@@ -0,0 +1,163 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  TELNET Webserver Application. When connected to the uIP stack,
+ *  this will serve out raw TELNET to the client on port 23.
+ */
+
+#define  INCLUDE_FROM_TELNETSERVERAPP_C
+#include "TELNETServerApp.h"
+
+#if defined(ENABLE_TELNET_SERVER) || defined(__DOXYGEN__)
+
+/** Welcome message to send to a TELNET client when a connection is first made. */
+const char PROGMEM WelcomeHeader[] = "********************************************\r\n"
+                                     "*       LUFA uIP Webserver (TELNET)        *\r\n"
+                                     "********************************************\r\n";
+
+/** Main TELNET menu, giving the user the list of available commands they may issue */
+const char PROGMEM TELNETMenu[] = "\r\n"
+                                  "  == Available Commands: ==\r\n"
+                                  "     c) List Active TCP Connections\r\n"
+                                  "  =========================\r\n"
+                                  "\r\n>";
+
+/** Header to print before the current connections are printed to the client */
+const char PROGMEM CurrentConnectionsHeader[] = "\r\n* Current TCP Connections: *\r\n";
+
+/** Initialization function for the simple TELNET webserver. */
+void TELNETServerApp_Init(void)
+{
+	/* Listen on port 23 for TELNET connections from hosts */
+	uip_listen(HTONS(TELNET_SERVER_PORT));
+}
+
+/** uIP stack application callback for the TELNET server. This function must be called each time the
+ *  TCP/IP stack needs a TCP packet to be processed.
+ */
+void TELNETServerApp_Callback(void)
+{
+	uip_tcp_appstate_t* const AppState   = &uip_conn->appstate;
+	char*               const AppData    = (char*)uip_appdata;
+
+	if (uip_connected())
+	{
+		/* New connection - initialize connection state values */
+		AppState->TELNETServer.CurrentState = TELNET_STATE_SendHeader;
+	}
+
+	if (uip_acked())
+	{
+		/* Progress to the next state once the current state's data has been ACKed */
+		AppState->TELNETServer.CurrentState = AppState->TELNETServer.NextState;
+	}
+
+	if (uip_rexmit() || uip_acked() || uip_newdata() || uip_connected() || uip_poll())
+	{
+		switch (AppState->TELNETServer.CurrentState)
+		{
+			case TELNET_STATE_SendHeader:
+				/* Copy over and send the TELNET welcome message upon first connection */
+				strcpy_P(AppData, WelcomeHeader);
+				uip_send(AppData, strlen(AppData));
+
+				AppState->TELNETServer.NextState = TELNET_STATE_SendMenu;
+				break;
+			case TELNET_STATE_SendMenu:
+				/* Copy over and send the TELNET menu to the client */
+				strcpy_P(AppData, TELNETMenu);
+				uip_send(AppData, strlen(AppData));
+
+				AppState->TELNETServer.NextState = TELNET_STATE_GetCommand;
+				break;
+			case TELNET_STATE_GetCommand:
+				if (!(uip_datalen()))
+				  break;
+
+				/* Save the issued command for later processing */
+				AppState->TELNETServer.IssuedCommand = AppData[0];
+
+				AppState->TELNETServer.CurrentState  = TELNET_STATE_SendResponse;
+				break;
+			case TELNET_STATE_SendResponse:
+				/* Determine which command was issued, perform command processing */
+				switch (AppState->TELNETServer.IssuedCommand)
+				{
+					case 'c':
+						TELNETServerApp_DisplayTCPConnections();
+						break;
+					default:
+						strcpy_P(AppData, PSTR("Invalid Command.\r\n"));
+						uip_send(AppData, strlen(AppData));
+						break;
+				}
+
+				AppState->TELNETServer.NextState = TELNET_STATE_SendMenu;
+				break;
+		}
+	}
+}
+
+/** Sends a list of active TCP connections to the TELNET client. */
+static void TELNETServerApp_DisplayTCPConnections(void)
+{
+	char* const AppData    = (char*)uip_appdata;
+
+	strcpy_P(AppData, CurrentConnectionsHeader);
+
+	uint16_t ResponseLen     = strlen(AppData);
+	uint8_t  ActiveConnCount = 0;
+
+	/* Loop through the complete uIP TCP connections list, looking for active connections */
+	for (uint8_t i = 0; i < UIP_CONNS; i++)
+	{
+		struct uip_conn* CurrConnection = &uip_conns[i];
+
+		/* If the connection is not closed, it is active and must be added to the out buffer */
+		if (CurrConnection->tcpstateflags != UIP_CLOSED)
+		{
+			/* Add the current connection's details to the out buffer */
+			ResponseLen += sprintf_P(&AppData[ResponseLen], PSTR("%u) %d.%d.%d.%d (Local Port %u <=> Remote Port %u)\r\n"),
+			                         ++ActiveConnCount,
+			                         CurrConnection->ripaddr.u8[0],
+			                         CurrConnection->ripaddr.u8[1],
+			                         CurrConnection->ripaddr.u8[2],
+			                         CurrConnection->ripaddr.u8[3],
+			                         HTONS(CurrConnection->lport), HTONS(CurrConnection->rport));
+		}
+	}
+
+	uip_send(AppData, ResponseLen);
+}
+
+#endif
+