diff -r 000000000000 -r 3da2a79470a7 testexecmgmt/ucc/Source/PppdGateway/pppdgateway.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/testexecmgmt/ucc/Source/PppdGateway/pppdgateway.c Mon Mar 08 15:04:18 2010 +0800 @@ -0,0 +1,336 @@ +/* +* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: +* Switches +* +*/ + + + +//#define SYSTEM_TEST_MP5 + + +/******************************************************************************* + * + * System Includes + * + ******************************************************************************/ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/******************************************************************************* + * + * Local Includes + * + ******************************************************************************/ +#include "socket_helper.h" + + +/******************************************************************************* + * + * Definitions + * + ******************************************************************************/ +#define RECVBUFFSIZE (4096*4) +#define MAXIDSTR 64 + + +/******************************************************************************* + * + * Prototypes + * + ******************************************************************************/ +void *receive_ppp_frames( void *x ); +void *send_ppp_frames( void * ); +void closesocket( int sockfd ); +int do_client_server_protocol( int aMobsterDeviceID ); + + +/******************************************************************************* + * + * File-scope + * + ******************************************************************************/ +int sockfd; + + +/******************************************************************************* + * + * Signal Handler + * + ******************************************************************************/ +void sigterm( int signum ) +{ + pid_t mp = getpid(); + fprintf( stderr, "PG: pppdgateway(%d) received a SIGTERM -- ignoring\n", mp ); +} + + +/******************************************************************************* + * + * Main() + * + ******************************************************************************/ +int main( int argc, char *argv[] ) +{ + int err; + int mobster_device_id = 0; + pthread_t threadhandle_send, threadhandle_recv; + struct sockaddr_in mobster_addr; + __sighandler_t oh; + + // check args + if( argc != 4 ) { + fprintf( stderr, "usage: %s mobster_address mobster_port mobster_device_id\n", argv[0] ); + return -1; + } + mobster_device_id = atoi(argv[3]); + fprintf( stderr, "PG: pppdgateway starting\n" ); + + // setup the signal handler -- note that we ignore SIGTERM! This is because if we shutdown on a SIGTERM we don't + // output the TERMREQ -- or receive the TERMACK. Therefore, we rely on the fact that when pppd wants to stop + // it will close stdin -- this will cause the output thread to stop -- it will also close the socket which + // will cause the input thread to stop -- then the main thread will exit + oh = signal( SIGTERM, sigterm ); + if( oh == SIG_ERR ) { + fprintf( stderr, "PG: error registering signal handler (SIGTERM)\n" ); + return -1; + } + oh = signal( SIGHUP, sigterm ); + if( oh == SIG_ERR ) { + fprintf( stderr, "PG: error registering signal handler (SIGHUP)\n" ); + return -1; + } + + // create a TCP socket + sockfd = socket( AF_INET, SOCK_STREAM, 0 ); + if( sockfd == -1 ) { + fprintf( stderr, "PG: failed to create socket, exiting.\n" ); + return -1; + } + + // create the address + mobster_addr = getsockaddr( argv[1], argv[2] ); + if( mobster_addr.sin_addr.s_addr == 0 ) { + fprintf( stderr, "PG: invalid address (zero or couldn't resolve hostname), exiting.\n" ); + closesocket( sockfd ); + return -1; + } + + // connect to mobster + err = connect( sockfd, (struct sockaddr*)&mobster_addr, sizeof(mobster_addr) ); + if( err != 0 ) { + perror( "PG: connect() to server failed\n" ); + closesocket( sockfd ); + return -1; + } + + // do the client server protocol - if there is an error the exit + err = do_client_server_protocol( mobster_device_id ); + if( err != 0 ) { + fprintf( stderr, "PG: client/server protocol failed.\n" ); + closesocket( sockfd ); + return -1; + } + + // change the streams to unbuffered so that this exe doesn't add latency + err = setvbuf( stdout, NULL, _IONBF, 0 ); + if( err != 0 ) { + fprintf( stderr, "PG: failed to set buffering on stdout (%d)\n", err ); + closesocket( sockfd ); + return -1; + } + err = setvbuf( stdin, NULL, _IONBF, 0 ); + if( err != 0 ) { + fprintf( stderr, "PG: failed to set buffering on stdout (%d)\n", err ); + closesocket( sockfd ); + return -1; + } + err = setvbuf( stderr, NULL, _IONBF, 0 ); + if( err != 0 ) { + fprintf( stderr, "PG: failed to set buffering on stdout (%d)\n", err ); + closesocket( sockfd ); + return -1; + } + + // all the setup is done -- create the threads and let them do their stuff + err = pthread_create( &threadhandle_send, NULL, send_ppp_frames, 0 ); + assert( err == 0 ); + err = pthread_create( &threadhandle_recv, NULL, receive_ppp_frames, 0 ); + assert( err == 0 ); + + + // wait for them to exit + pthread_join( threadhandle_send, NULL ); + pthread_join( threadhandle_recv, NULL ); + + + // return + fprintf( stderr, "PG: pppdgateway has completed.\n" ); + return 0; +} + + +/******************************************************************************* + * + * receive_ppp_frames + * + ******************************************************************************/ +void *receive_ppp_frames( void *x ) +{ + int recvcount, writecount; + char recvbuff[RECVBUFFSIZE]; + + // listen on the udp socket and send anything received to stdout -- no framing is ever done on the input channel + while( 1 ) { + + // wait for some data -- on error print error, close the socket, and exit. Closing the socket means that the other thread will clean up and exit + recvcount = recv( sockfd, recvbuff, RECVBUFFSIZE, 0 ); + if( recvcount == -1 ) { + fprintf( stderr, "PG: error occured while reading socket.\n" ); + closesocket( sockfd ); + pthread_exit( NULL ); + } + // fprintf( stderr, "PG: %d bytes incoming\n", recvcount ); + + // send the data to the pppd server + writecount = fwrite( recvbuff, 1, recvcount, stdout ); + if( writecount != recvcount ) { + fprintf( stderr, "PG: error occured while writing to stdout.\n" ); + closesocket( sockfd ); + pthread_exit( NULL ); + } + } + + // done + return NULL; +} + + +/******************************************************************************* + * + * send_ppp_frames + * + ******************************************************************************/ +void *send_ppp_frames( void *x ) +{ + int err; + int sendcount; + int c = 0; + + // listen on stdin for data and write it to the socket -- on error print an error, closesocket, and exit. + while( 1 ) { + + // read the next char + err = fread( &c, 1, 1, stdin ); + if( err != 1 ) { + fprintf( stderr, "PG: error occured while reading from stdin.\n" ); + closesocket( sockfd ); + pthread_exit( NULL ); + } + // fprintf( stderr, "PG: %d bytes outgoing\n", err ); + + // write it to the socket + sendcount = send( sockfd, &c, 1, 0 ); + if( sendcount != 1 ) { + fprintf( stderr, "PG: error occured while writing to the socket.\n" ); + closesocket( sockfd ); + pthread_exit( NULL ); + } + } + + // done + return NULL; +} + + +/******************************************************************************* + * + * closesocket + * + ******************************************************************************/ +void closesocket( int sockfd ) +{ + shutdown( sockfd, SHUT_RDWR ); + close( sockfd ); +} + + +/******************************************************************************* + * + * do_client_server_protocol() + * + ******************************************************************************/ +int do_client_server_protocol( int aMobsterDeviceID ) +{ + char c; + int len, expected_length, i, err; + char idstr[MAXIDSTR]; + char rpstr[MAXIDSTR]; + + // construct the client string for the csprotocol + snprintf( idstr, MAXIDSTR, "ID=%d", aMobsterDeviceID ); + len = strlen(idstr); + idstr[len] = 0x0d; + idstr[len+1] = 0; + +#ifdef SYSTEM_TEST_MP5 + assert( !"TEST" ); +#endif + + // send the string + err = send( sockfd, idstr, len+1, 0 ); + if( err != (len+1) ) { + fprintf( stderr, "PG: failed to write id string, exiting.\n" ); + return -1; + } + + // construct the expected reply string to get the expected length + snprintf( rpstr, MAXIDSTR, "SERVER(%d)", aMobsterDeviceID ); + expected_length = strlen(rpstr); + + // now read until there + for( i = 0; ; i++ ) { + + // read a byte + err = recv( sockfd, &c, 1, 0 ); + if( err == -1 ) { + fprintf( stderr, "PG: failed to read reply string (%d, %d).\n", err, errno ); + return -1; + } + + // check for a mismatch + if( c != rpstr[i] ) { + fprintf( stderr, "PG: unexpected character from server.\n" ); + return -1; + } + + // see if we've matched all chars + if( (i+1) == expected_length ) { + break; + } + } + + // done - success + return 0; +}