234 lines
6.5 KiB
C
234 lines
6.5 KiB
C
/*
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* Copyright (c) 2010, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* A simple wget implementation
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* \author
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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*/
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#include "webclient.h"
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#include "wget.h"
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#include "dev/leds.h"
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#define DEBUG DEBUG_NONE
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#include "net/ip/uip-debug.h"
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#define DEBUG_LEDS 0
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#undef LEDS_ON
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#undef LEDS_OFF
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#if DEBUG_LEDS
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#define LEDS_ON(led) leds_on(led)
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#define LEDS_OFF(led) leds_off(led)
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#else
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#define LEDS_ON(led)
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#define LEDS_OFF(led)
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#endif /* DEBUG */
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static int fetch_running;
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#define STATS ((DEBUG) & DEBUG_PRINT) && 1
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#if STATS
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static clock_time_t fetch_started;
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static unsigned long fetch_counter;
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#endif /* STATUS */
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static const char *server;
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static const char *file;
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static uint16_t port;
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static const struct wget_callbacks *callbacks;
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const char http_10[9] =
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/* "HTTP/1.0" */
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{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, };
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const char http_11[9] =
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/* "HTTP/1.1" */
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{0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, };
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const char http_200[5] =
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/* "200 " */
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{0x32, 0x30, 0x30, 0x20, };
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const char http_301[5] =
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/* "301 " */
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{0x33, 0x30, 0x31, 0x20, };
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const char http_302[5] =
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/* "302 " */
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{0x33, 0x30, 0x32, 0x20, };
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const char http_crnl[3] =
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/* "\r\n" */
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{0xd, 0xa, };
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const char http_host[7] =
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/* "host: " */
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{0x68, 0x6f, 0x73, 0x74, 0x3a, 0x20, };
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const char http_content_type[15] =
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/* "content-type: " */
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{0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, };
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const char http_location[11] =
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/* "location: " */
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{0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, };
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const char http_http[8] =
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/* "http://" */
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{0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, };
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PROCESS(wget_process, "wget");
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/*---------------------------------------------------------------------------*/
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static void
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call_done(int status)
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{
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if(callbacks != NULL && callbacks->done != NULL) {
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callbacks->done(status);
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}
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(wget_process, ev, data)
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{
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PROCESS_BEGIN();
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PRINTF("wget: fetching %s\n", file);
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#if STATS
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fetch_counter = 0;
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fetch_started = clock_time();
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#endif /* STATS */
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LEDS_ON(LEDS_YELLOW);
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if(webclient_get(server, port, file) == 0) {
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PRINTF("wget: failed to connect\n");
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LEDS_OFF(LEDS_YELLOW);
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fetch_running = 0;
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call_done(WGET_CONNECT_FAILED);
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} else {
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while(fetch_running) {
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PROCESS_WAIT_EVENT();
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if(ev == tcpip_event) {
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webclient_appcall(data);
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_datahandler(char *data, uint16_t len)
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{
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if(len == 0) {
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#if STATS
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clock_time_t elapsed;
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elapsed = clock_time() - fetch_started;
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PRINTF("wget: recv %lu bytes during %lu sec (",
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fetch_counter, (elapsed / CLOCK_SECOND));
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#if CLOCK_SECOND == 128
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PRINTF("%lu.%02lus, ", (unsigned long) elapsed >> 7,
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(unsigned long)((elapsed & 127) * 100) / 128);
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PRINTF("%lu byte/sec ", (fetch_counter * 128L) / elapsed);
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#endif
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PRINTF("%lu tick): ", (unsigned long) elapsed);
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if(elapsed > CLOCK_SECOND) {
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PRINTF("%lu", fetch_counter / (elapsed / CLOCK_SECOND));
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} else {
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PRINTF("-");
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}
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PRINTF(" byte/sec\n");
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#else /* STATS */
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PRINTF("wget: complete\n");
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#endif /* STATS */
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fetch_running = 0;
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call_done(WGET_OK);
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LEDS_OFF(LEDS_RED|LEDS_YELLOW);
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} else {
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#if STATS
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fetch_counter += len;
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#endif /* STATS */
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if(callbacks != NULL && callbacks->data != NULL) {
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/* Assume the buffer is large enough for ending zero */
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data[len] = '\0';
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callbacks->data(data, len);
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_connected(void)
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{
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LEDS_OFF(LEDS_YELLOW);
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LEDS_ON(LEDS_RED);
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_timedout(void)
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{
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PRINTF("wget: timedout\n");
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LEDS_OFF(LEDS_RED|LEDS_YELLOW);
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fetch_running = 0;
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call_done(WGET_TIMEDOUT);
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_aborted(void)
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{
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PRINTF("wget: aborted\n");
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LEDS_OFF(LEDS_RED|LEDS_YELLOW);
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fetch_running = 0;
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call_done(WGET_ABORTED);
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_closed(void)
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{
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PRINTF("wget: closed\n");
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fetch_running = 0;
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LEDS_OFF(LEDS_RED|LEDS_YELLOW);
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call_done(WGET_CLOSED);
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}
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/*---------------------------------------------------------------------------*/
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void
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wget_init(void)
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{
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webclient_init();
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}
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/*---------------------------------------------------------------------------*/
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int
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wget_get(const char *s, uint16_t p, const char *f,
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const struct wget_callbacks *c)
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{
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if(fetch_running) {
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return WGET_ALREADY_RUNNING;
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}
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fetch_running = 1;
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server = s;
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port = p;
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file = f;
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callbacks = c;
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process_start(&wget_process, NULL);
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return WGET_OK;
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}
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/*---------------------------------------------------------------------------*/
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