Added wget command for downloading files over HTTP
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adamdunkels
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214
apps/shell/shell-wget.c
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214
apps/shell/shell-wget.c
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/*
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* Copyright (c) 2008, 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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* This file is part of the Contiki operating system.
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*
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* $Id: shell-wget.c,v 1.1 2008/11/09 12:36:23 adamdunkels Exp $
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*/
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/**
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* \file
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* Wget Contiki shell command
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "contiki.h"
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#include "shell.h"
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#include "dev/leds.h"
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#include "dev/watchdog.h"
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#include "webclient.h"
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#include <stdio.h>
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#include <string.h>
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#define MAX_URLLEN 128
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static char url[MAX_URLLEN];
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static uint8_t running;
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/*---------------------------------------------------------------------------*/
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PROCESS(shell_wget_process, "wget");
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SHELL_COMMAND(wget_command,
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"wget",
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"wget [URL]: download a file with HTTP",
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&shell_wget_process);
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/*---------------------------------------------------------------------------*/
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static void
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open_url(char *url)
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{
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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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static u16_t addr[2];
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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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/* 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 statusbar. */
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if(uiplib_ipaddrconv(host, (unsigned char *)addr) == 0) {
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shell_output_str(&wget_command, "Not an IP address", "");
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if(resolv_lookup(host) == NULL) {
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shell_output_str(&wget_command, "Not resolved", "");
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resolv_query(host);
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return;
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}
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}
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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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shell_output_str(&wget_command, "Host ", host);
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shell_output_str(&wget_command, "File ", file);
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if(webclient_get(host, 80, file) == 0) {
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shell_output_str(&wget_command, "Out of memory", "");
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} else {
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shell_output_str(&wget_command, "Connecting...", "");
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}
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_wget_process, ev, data)
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{
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PROCESS_BEGIN();
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strncpy(url, data, sizeof(url));
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open_url(url);
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running = 1;
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while(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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} 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) {
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open_url(url);
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} else {
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shell_output_str(&wget_command, "Host not found.", "");
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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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shell_wget_init(void)
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{
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shell_register_command(&wget_command);
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}
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/*---------------------------------------------------------------------------*/
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void
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webclient_datahandler(char *data, u16_t len)
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{
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if(len == 0) {
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running = 0;
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} else {
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shell_output(&wget_command, data, len, NULL, 0);
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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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shell_output_str(&wget_command, "connected", "");
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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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shell_output_str(&wget_command, "timedout", "");
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running = 0;
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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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shell_output_str(&wget_command, "aborted", "");
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running = 0;
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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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shell_output_str(&wget_command, "closed", "");
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running = 0;
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}
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/*---------------------------------------------------------------------------*/
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48
apps/shell/shell-wget.h
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48
apps/shell/shell-wget.h
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@ -0,0 +1,48 @@
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/*
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* Copyright (c) 2008, 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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* This file is part of the Contiki operating system.
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*
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* $Id: shell-wget.h,v 1.1 2008/11/09 12:36:23 adamdunkels Exp $
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*/
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/**
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* \file
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* Header file for Contik shell command wget
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#ifndef __SHELL_WGET_H__
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#define __SHELL_WGET_H__
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#include "shell.h"
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void shell_wget_init(void);
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#endif /* __SHELL_WGET_H__ */
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