266 lines
7 KiB
C
266 lines
7 KiB
C
/*
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* Copyright (c) 2002, Adam Dunkels.
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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
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the Contiki desktop environment
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*
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki-net.h"
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#include "webclient.h"
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#include "cfs/cfs.h"
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#include "lib/petsciiconv.h"
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PROCESS(wget_process, "Wget");
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AUTOSTART_PROCESSES(&wget_process);
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static int file = -1;
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static char url[128];
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/*-----------------------------------------------------------------------------------*/
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/* Called when the URL present in the global "url" variable should be
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* opened. It will call the hostname resolver as well as the HTTP
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* client requester.
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*/
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static void
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start_get(void)
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{
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uip_ipaddr_t addr;
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unsigned char i;
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static char host[32];
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char *file;
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register char *urlptr;
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/* Trim off any spaces in the end of the url. */
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urlptr = url + strlen(url) - 1;
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while(*urlptr == ' ' && urlptr > url) {
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*urlptr = 0;
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--urlptr;
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}
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/* Don't even try to go further if the URL is empty. */
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if(urlptr == url) {
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return;
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}
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/* See if the URL starts with http://, otherwise prepend it. */
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if(strncmp(url, http_http, 7) != 0) {
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while(urlptr >= url) {
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*(urlptr + 7) = *urlptr;
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--urlptr;
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}
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strncpy(url, http_http, 7);
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}
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/* Find host part of the URL. */
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urlptr = &url[7];
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for(i = 0; i < sizeof(host); ++i) {
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if(*urlptr == 0 ||
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*urlptr == '/' ||
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*urlptr == ' ' ||
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*urlptr == ':') {
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host[i] = 0;
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break;
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}
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host[i] = *urlptr;
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++urlptr;
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}
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/* XXX: Here we should find the port part of the URL, but this isn't
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currently done because of laziness from the programmer's side
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:-) */
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/* Find file part of the URL. */
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while(*urlptr != '/' && *urlptr != 0) {
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++urlptr;
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}
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if(*urlptr == '/') {
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file = urlptr;
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} else {
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file = "/";
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}
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#if UIP_UDP
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/* First check if the host is an IP address. */
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if(uiplib_ipaddrconv(host, &addr) == 0) {
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uip_ipaddr_t *addrptr;
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/* Try to lookup the hostname. If it fails, we initiate a hostname
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lookup and print out an informative message on the
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statusbar. */
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if(resolv_lookup(host, &addrptr) != RESOLV_STATUS_CACHED) {
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resolv_query(host);
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puts("Resolving host...");
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return;
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}
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uip_ipaddr_copy(&addr, addrptr);
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}
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#else /* UIP_UDP */
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uiplib_ipaddrconv(host, &addr);
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#endif /* UIP_UDP */
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/* The hostname we present in the hostname table, so we send out the
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initial GET request. */
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if(webclient_get(host, 80, file) == 0) {
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puts("Out of memory error");
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} else {
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puts("Connecting...");
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}
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}
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/*-----------------------------------------------------------------------------------*/
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static void
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app_quit(void)
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{
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if(file != -1) {
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cfs_close(file);
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}
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puts("Press any key to continue...");
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getchar();
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process_exit(&wget_process);
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LOADER_UNLOAD();
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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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static char name[32];
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static unsigned char i;
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PROCESS_BEGIN();
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/* Allow other processes to initialize properly. */
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for(i = 0; i < 10; ++i) {
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PROCESS_PAUSE();
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}
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fputs("Get url:", stdout);
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gets(url);
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fputs("Save as:", stdout);
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gets(name);
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file = cfs_open(name, CFS_WRITE);
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if(file == -1) {
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printf("Open error with '%s'\n", name);
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app_quit();
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} else {
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petsciiconv_toascii(url, sizeof(url));
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start_get();
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}
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while(1) {
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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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#if UIP_UDP
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} else if(ev == resolv_event_found) {
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/* Either found a hostname, or not. */
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if((char *)data != NULL &&
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resolv_lookup((char *)data, NULL) == RESOLV_STATUS_CACHED) {
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start_get();
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} else {
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puts("Host not found");
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app_quit();
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}
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#endif /* UIP_UDP */
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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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/* Callback function. Called from the webclient when the HTTP
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* connection was abruptly aborted.
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*/
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void
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webclient_aborted(void)
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{
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puts("Connection reset by peer");
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app_quit();
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}
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/*-----------------------------------------------------------------------------------*/
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/* Callback function. Called from the webclient when the HTTP
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* connection timed out.
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*/
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void
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webclient_timedout(void)
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{
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puts("Connection timed out");
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app_quit();
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}
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/*-----------------------------------------------------------------------------------*/
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/* Callback function. Called from the webclient when the HTTP
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* connection was closed after a request from the "webclient_close()"
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* function. .
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*/
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void
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webclient_closed(void)
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{
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puts("Done.");
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app_quit();
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}
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/*-----------------------------------------------------------------------------------*/
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/* Callback function. Called from the webclient when the HTTP
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* connection is connected.
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*/
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void
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webclient_connected(void)
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{
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puts("Request sent...");
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}
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/*-----------------------------------------------------------------------------------*/
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/* Callback function. Called from the webclient module when HTTP data
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* has arrived.
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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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static unsigned long dload_bytes;
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int ret;
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if(len > 0) {
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dload_bytes += len;
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printf("Downloading (%lu bytes)\n", dload_bytes);
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if(file != -1) {
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ret = cfs_write(file, data, len);
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if(ret != len) {
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printf("Wrote only %d bytes\n", ret);
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}
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}
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}
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if(data == NULL) {
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printf("Finished downloading %lu bytes.\n", dload_bytes);
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app_quit();
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}
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}
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/*-----------------------------------------------------------------------------------*/
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