osd-contiki/examples/z1/ipv6/z1-websense/wget.c
2011-03-16 17:41:03 +01:00

205 lines
5.7 KiB
C

/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: wget.c,v 1.2 2010/06/14 14:12:43 nifi Exp $
*/
/**
* \file
* A simple wget implementation
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#include "webclient.h"
#include "wget.h"
#include "dev/leds.h"
#define DEBUG DEBUG_NONE
#include "net/uip-debug.h"
#define DEBUG_LEDS 0
#undef LEDS_ON
#undef LEDS_OFF
#if DEBUG_LEDS
#define LEDS_ON(led) leds_on(led)
#define LEDS_OFF(led) leds_off(led)
#else
#define LEDS_ON(led)
#define LEDS_OFF(led)
#endif /* DEBUG */
static int fetch_running;
#define STATS ((DEBUG) & DEBUG_PRINT) && 1
#if STATS
static clock_time_t fetch_started;
static unsigned long fetch_counter;
#endif /* STATUS */
static const char *server;
static const char *file;
static uint16_t port;
static const struct wget_callbacks *callbacks;
PROCESS(wget_process, "wget");
/*---------------------------------------------------------------------------*/
static void
call_done(int status)
{
if(callbacks != NULL && callbacks->done != NULL) {
callbacks->done(status);
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(wget_process, ev, data)
{
PROCESS_BEGIN();
PRINTF("wget: fetching %s\n", file);
#if STATS
fetch_counter = 0;
fetch_started = clock_time();
#endif /* STATS */
LEDS_ON(LEDS_YELLOW);
if(webclient_get(server, port, file) == 0) {
PRINTF("wget: failed to connect\n");
LEDS_OFF(LEDS_YELLOW);
fetch_running = 0;
call_done(WGET_CONNECT_FAILED);
} else {
while(fetch_running) {
PROCESS_WAIT_EVENT();
if(ev == tcpip_event) {
webclient_appcall(data);
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
webclient_datahandler(char *data, u16_t len)
{
if(len == 0) {
#if STATS
clock_time_t elapsed;
elapsed = clock_time() - fetch_started;
PRINTF("wget: recv %lu bytes during %lu sec (",
fetch_counter, (elapsed / CLOCK_SECOND));
#if CLOCK_SECOND == 128
PRINTF("%lu.%02lus, ", (unsigned long) elapsed >> 7,
(unsigned long)((elapsed & 127) * 100) / 128);
PRINTF("%lu byte/sec ", (fetch_counter * 128L) / elapsed);
#endif
PRINTF("%lu tick): ", (unsigned long) elapsed);
if(elapsed > CLOCK_SECOND) {
PRINTF("%lu", fetch_counter / (elapsed / CLOCK_SECOND));
} else {
PRINTF("-");
}
PRINTF(" byte/sec\n");
#else /* STATS */
PRINTF("wget: complete\n");
#endif /* STATS */
fetch_running = 0;
call_done(WGET_OK);
LEDS_OFF(LEDS_RED|LEDS_YELLOW);
} else {
#if STATS
fetch_counter += len;
#endif /* STATS */
if(callbacks != NULL && callbacks->data != NULL) {
/* Assume the buffer is large enough for ending zero */
data[len] = '\0';
callbacks->data(data, len);
}
}
}
/*---------------------------------------------------------------------------*/
void
webclient_connected(void)
{
LEDS_OFF(LEDS_YELLOW);
LEDS_ON(LEDS_RED);
}
/*---------------------------------------------------------------------------*/
void
webclient_timedout(void)
{
PRINTF("wget: timedout\n");
LEDS_OFF(LEDS_RED|LEDS_YELLOW);
fetch_running = 0;
call_done(WGET_TIMEDOUT);
}
/*---------------------------------------------------------------------------*/
void
webclient_aborted(void)
{
PRINTF("wget: aborted\n");
LEDS_OFF(LEDS_RED|LEDS_YELLOW);
fetch_running = 0;
call_done(WGET_ABORTED);
}
/*---------------------------------------------------------------------------*/
void
webclient_closed(void)
{
PRINTF("wget: closed\n");
fetch_running = 0;
LEDS_OFF(LEDS_RED|LEDS_YELLOW);
call_done(WGET_CLOSED);
}
/*---------------------------------------------------------------------------*/
void
wget_init(void)
{
webclient_init();
}
/*---------------------------------------------------------------------------*/
int
wget_get(const char *s, uint16_t p, const char *f,
const struct wget_callbacks *c)
{
if(fetch_running) {
return WGET_ALREADY_RUNNING;
}
fetch_running = 1;
server = s;
port = p;
file = f;
callbacks = c;
process_start(&wget_process, NULL);
return WGET_OK;
}
/*---------------------------------------------------------------------------*/