From 0d506a5c6a4488b4b4a18b6bc6a4896a334a815b Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Thu, 23 Mar 2006 12:25:28 +0000 Subject: [PATCH] Now capable of sending "Hello world!" via TCP. --- src/util/prototester.c | 261 +++++++++++++++++++++++++++++++++-------- 1 file changed, 212 insertions(+), 49 deletions(-) diff --git a/src/util/prototester.c b/src/util/prototester.c index c68a095d..88a21638 100644 --- a/src/util/prototester.c +++ b/src/util/prototester.c @@ -11,6 +11,7 @@ #include #include #include +#include typedef int irq_action_t; @@ -253,11 +254,80 @@ static void hijack_disable ( struct hijack_device *hijack_dev ) { #include "../proto/uip/uip.h" #include "../proto/uip/uip_arp.h" -void UIP_APPCALL ( void ) { - printf ( "appcall\n" ); +struct tcp_connection; + +struct tcp_operations { + void ( * aborted ) ( struct tcp_connection *conn ); + void ( * timedout ) ( struct tcp_connection *conn ); + void ( * closed ) ( struct tcp_connection *conn ); + void ( * connected ) ( struct tcp_connection *conn ); + void ( * acked ) ( struct tcp_connection *conn, size_t len ); + void ( * newdata ) ( struct tcp_connection *conn ); + void ( * senddata ) ( struct tcp_connection *conn ); +}; + +struct tcp_connection { + struct sockaddr_in sin; + struct tcp_operations *tcp_op; +}; + +static int tcp_connect ( struct tcp_connection *conn ) { + struct uip_conn *uip_conn; + u16_t ipaddr[2]; + + assert ( conn->sin.sin_addr.s_addr != 0 ); + assert ( conn->sin.sin_port != 0 ); + assert ( conn->tcp_op != NULL ); + assert ( sizeof ( uip_conn->appstate ) == sizeof ( conn ) ); + + * ( ( uint32_t * ) ipaddr ) = conn->sin.sin_addr.s_addr; + uip_conn = uip_connect ( ipaddr, conn->sin.sin_port ); + if ( ! uip_conn ) + return -1; + + *( ( void ** ) uip_conn->appstate ) = conn; + return 0; } -void udp_appcall ( void ) { +static void tcp_send ( struct tcp_connection *conn, const void *data, + size_t len ) { + assert ( conn = *( ( void ** ) uip_conn->appstate ) ); + uip_send ( ( void * ) data, len ); +} + +static void tcp_close ( struct tcp_connection *conn ) { + assert ( conn = *( ( void ** ) uip_conn->appstate ) ); + uip_close(); +} + +void uip_tcp_appcall ( void ) { + struct tcp_connection *conn = *( ( void ** ) uip_conn->appstate ); + struct tcp_operations *op = conn->tcp_op; + + assert ( conn->tcp_op->closed != NULL ); + assert ( conn->tcp_op->connected != NULL ); + assert ( conn->tcp_op->acked != NULL ); + assert ( conn->tcp_op->newdata != NULL ); + assert ( conn->tcp_op->senddata != NULL ); + + if ( uip_aborted() && op->aborted ) /* optional method */ + op->aborted ( conn ); + if ( uip_timedout() && op->timedout ) /* optional method */ + op->timedout ( conn ); + if ( uip_closed() && op->closed ) /* optional method */ + op->closed ( conn ); + if ( uip_connected() ) + op->connected ( conn ); + if ( uip_acked() ) + op->acked ( conn, uip_conn->len ); + if ( uip_newdata() ) + op->newdata ( conn ); + if ( uip_rexmit() || uip_newdata() || uip_acked() || + uip_connected() || uip_poll() ) + op->senddata ( conn ); +} + +void uip_udp_appcall ( void ) { } static void init_tcpip ( void ) { @@ -265,19 +335,18 @@ static void init_tcpip ( void ) { uip_arp_init(); } +#define UIP_HLEN ( 40 + UIP_LLH_LEN ) + static void uip_transmit ( void ) { uip_arp_out(); + if ( uip_len > UIP_HLEN ) { + memcpy ( uip_buf + UIP_HLEN, ( void * ) uip_appdata, + uip_len - UIP_HLEN ); + } netdev_transmit ( uip_buf, uip_len ); uip_len = 0; } -static int tcp_connect ( struct sockaddr_in *sin ) { - u16_t ipaddr[2]; - - * ( ( uint32_t * ) ipaddr ) = sin->sin_addr.s_addr; - return uip_connect ( ipaddr, sin->sin_port ) ? 1 : 0; -} - static void run_tcpip ( void ) { void *data; size_t len; @@ -308,59 +377,143 @@ static void run_tcpip ( void ) { /***************************************************************************** * - * HTTP protocol tester + * "Hello world" protocol tester * */ -struct http_request { - struct sockaddr_in sin; - const char *filename; - void ( *callback ) ( struct http_request *http ); +#include +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) + +enum hello_state { + HELLO_SENDING_MESSAGE = 0, + HELLO_SENDING_ENDL, +}; + +struct hello_request { + struct tcp_connection tcp; + const char *message; + enum hello_state state; + int remaining; + void ( *callback ) ( struct hello_request *hello ); int complete; }; -static int http_get ( struct http_request *http ) { - return tcp_connect ( &http->sin ); +static inline struct hello_request * +tcp_to_hello ( struct tcp_connection *conn ) { + return container_of ( conn, struct hello_request, tcp ); } +static void hello_aborted ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); + printf ( "Connection aborted\n" ); + hello->complete = 1; +} +static void hello_timedout ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); -struct http_options { - struct sockaddr_in server; - char *filename; + printf ( "Connection timed out\n" ); + hello->complete = 1; +} + +static void hello_closed ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); + + hello->complete = 1; +} + +static void hello_connected ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); +} + +static void hello_acked ( struct tcp_connection *conn, size_t len ) { + struct hello_request *hello = tcp_to_hello ( conn ); + + hello->message += len; + hello->remaining -= len; + if ( hello->remaining <= 0 ) { + switch ( hello->state ) { + case HELLO_SENDING_MESSAGE: + hello->state = HELLO_SENDING_ENDL; + hello->message = "\r\n"; + hello->remaining = 2; + break; + case HELLO_SENDING_ENDL: + tcp_close ( conn ); + break; + default: + assert ( 0 ); + } + } +} + +static void hello_newdata ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); +} + +static void hello_senddata ( struct tcp_connection *conn ) { + struct hello_request *hello = tcp_to_hello ( conn ); + + tcp_send ( conn, hello->message, hello->remaining ); +} + +static struct tcp_operations hello_tcp_operations = { + .aborted = hello_aborted, + .timedout = hello_timedout, + .closed = hello_closed, + .connected = hello_connected, + .acked = hello_acked, + .newdata = hello_newdata, + .senddata = hello_senddata, }; -static void http_usage ( char **argv ) { +static int hello_connect ( struct hello_request *hello ) { + hello->tcp.tcp_op = &hello_tcp_operations; + hello->remaining = strlen ( hello->message ); + return tcp_connect ( &hello->tcp ); +} + +struct hello_options { + struct sockaddr_in server; + const char *message; +}; + +static void hello_usage ( char **argv ) { fprintf ( stderr, - "Usage: %s [global options] http [http-specific options]\n" + "Usage: %s [global options] hello [hello-specific options]\n" "\n" - "http-specific options:\n" + "hello-specific options:\n" " -h|--host Host IP address\n" - " -f|--file Filename\n", + " -p|--port Port number\n" + " -m|--message Message to send\n", argv[0] ); } -static int http_parse_options ( int argc, char **argv, - struct http_options *options ) { +static int hello_parse_options ( int argc, char **argv, + struct hello_options *options ) { static struct option long_options[] = { { "host", 1, NULL, 'h' }, - { "file", 1, NULL, 'f' }, + { "port", 1, NULL, 'p' }, + { "message", 1, NULL, 'm' }, { }, }; int c; + char *endptr; /* Set default options */ memset ( options, 0, sizeof ( *options ) ); inet_aton ( "192.168.0.1", &options->server.sin_addr ); options->server.sin_port = htons ( 80 ); - options->filename = "index.html"; + options->message = "Hello world!"; /* Parse command-line options */ while ( 1 ) { int option_index = 0; - c = getopt_long ( argc, argv, "h:f:", long_options, + c = getopt_long ( argc, argv, "h:p:", long_options, &option_index ); if ( c < 0 ) break; @@ -374,8 +527,17 @@ static int http_parse_options ( int argc, char **argv, return -1; } break; - case 'f': - options->filename = optarg; + case 'p': + options->server.sin_port = + htons ( strtoul ( optarg, &endptr, 0 ) ); + if ( *endptr != '\0' ) { + fprintf ( stderr, "Invalid port %s\n", + optarg ); + return -1; + } + break; + case 'm': + options->message = optarg; break; case '?': /* Unrecognised option */ @@ -388,36 +550,37 @@ static int http_parse_options ( int argc, char **argv, /* Check there are no remaining arguments */ if ( optind != argc ) { - http_usage ( argv ); + hello_usage ( argv ); return -1; } return optind; } -static void test_http_callback ( struct http_request *http ) { +static void test_hello_callback ( struct hello_request *hello ) { } -static int test_http ( int argc, char **argv ) { - struct http_options options; - struct http_request http; +static int test_hello ( int argc, char **argv ) { + struct hello_options options; + struct hello_request hello; - /* Parse http-specific options */ - if ( http_parse_options ( argc, argv, &options ) < 0 ) + /* Parse hello-specific options */ + if ( hello_parse_options ( argc, argv, &options ) < 0 ) return -1; - /* Construct http request */ - memset ( &http, 0, sizeof ( http ) ); - http.filename = options.filename; - http.sin = options.server; - http.callback = test_http_callback; - fprintf ( stderr, "http fetching http://%s/%s\n", - inet_ntoa ( http.sin.sin_addr ), http.filename ); + /* Construct hello request */ + memset ( &hello, 0, sizeof ( hello ) ); + hello.tcp.sin = options.server; + hello.message = options.message; + hello.callback = test_hello_callback; + fprintf ( stderr, "Saying \"%s\" to %s:%d\n", hello.message, + inet_ntoa ( hello.tcp.sin.sin_addr ), + ntohs ( hello.tcp.sin.sin_port ) ); - /* Issue http request and run to completion */ - http_get ( &http ); - while ( ! http.complete ) { + /* Issue hello request and run to completion */ + hello_connect ( &hello ); + while ( ! hello.complete ) { run_tcpip (); } @@ -436,7 +599,7 @@ struct protocol_test { }; static struct protocol_test tests[] = { - { "http", test_http }, + { "hello", test_hello }, }; #define NUM_TESTS ( sizeof ( tests ) / sizeof ( tests[0] ) )