/*
* Copyright (c) 2008, 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.
*
* This file is part of the Contiki operating system.
*
* $Id: shell-text.c,v 1.3 2009/03/06 00:29:33 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "shell.h"
#include <ctype.h>
#include <stdio.h>
#ifndef HAVE_SNPRINTF
int snprintf(char *str, size_t size, const char *format, ...);
#endif /* HAVE_SNPRINTF */
#include <string.h>
/*---------------------------------------------------------------------------*/
PROCESS(shell_echo_process, "echo");
SHELL_COMMAND(echo_command,
"echo",
"echo <text>: print <text>",
&shell_echo_process);
PROCESS(shell_dec64_process, "dec64");
SHELL_COMMAND(dec64_command,
"dec64",
"dec64: decode base64 input",
&shell_dec64_process);
PROCESS(shell_binprint_process, "binprint");
SHELL_COMMAND(binprint_command,
"binprint",
"binprint: print binary data in decimal format",
&shell_binprint_process);
PROCESS(shell_hd_process, "hd");
SHELL_COMMAND(hd_command,
"hd",
"hd: print binary data in hexadecimal format",
&shell_hd_process);
PROCESS(shell_size_process, "size");
SHELL_COMMAND(size_command,
"size",
"size: print the size of the input",
&shell_size_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_echo_process, ev, data)
{
PROCESS_BEGIN();
shell_output(&echo_command, data, (int)strlen(data), "\n", 1);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
#define BASE64_MAX_LINELEN 76
struct base64_decoder_state {
uint8_t data[3 * BASE64_MAX_LINELEN / 4];
int dataptr;
unsigned long tmpdata;
int sextets;
int padding;
};
/*---------------------------------------------------------------------------*/
static int
base64_decode_char(char c)
{
if(c >= 'A' && c <= 'Z') {
return c - 'A';
} else if(c >= 'a' && c <= 'z') {
return c - 'a' + 26;
} else if(c >= '0' && c <= '9') {
return c - '0' + 52;
} else if(c == '+') {
return 62;
} else if(c == '/') {
return 63;
} else {
return 0;
}
}
/*---------------------------------------------------------------------------*/
static int
base64_add_char(struct base64_decoder_state *s, char c)
{
if(isspace(c)) {
return 0;
}
if(s->dataptr >= sizeof(s->data)) {
return 0;
}
if(c == '=') {
++s->padding;
}
s->tmpdata = (s->tmpdata << 6) | base64_decode_char(c);
++s->sextets;
if(s->sextets == 4) {
s->sextets = 0;
s->data[s->dataptr] = (uint8_t)(s->tmpdata >> 16);
s->data[s->dataptr + 1] = (uint8_t)(s->tmpdata >> 8);
s->data[s->dataptr + 2] = (uint8_t)(s->tmpdata);
s->dataptr += 3;
if(s->dataptr == sizeof(s->data)) {
return 0;
} else {
return 1;
}
}
return 1;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_dec64_process, ev, data)
{
PROCESS_BEGIN();
while(1) {
struct shell_input *input;
struct base64_decoder_state s;
int i;
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
s.sextets = s.dataptr = s.padding = 0;
for(i = 0; i < input->len1; ++i) {
base64_add_char(&s, input->data1[i]);
}
for(i = 0; i < input->len2; ++i) {
base64_add_char(&s, input->data2[i]);
}
shell_output(&dec64_command, s.data, s.dataptr - s.padding, "", 0);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_hd_process, ev, data)
{
struct shell_input *input;
uint16_t *ptr;
int i;
char buf[57], *bufptr;
PROCESS_BEGIN();
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
bufptr = buf;
ptr = (uint16_t *)input->data1;
for(i = 0; i < input->len1 && i < input->len1 - 1; i += 2) {
bufptr += sprintf(bufptr, "0x%04x ", *ptr);
if(bufptr - buf >= sizeof(buf) - 7) {
shell_output_str(&hd_command, buf, "");
bufptr = buf;
}
ptr++;
}
ptr = (uint16_t *)input->data2;
for(i = 0; i < input->len2 && i < input->len2 - 1; i += 2) {
bufptr += sprintf(bufptr, "0x%04x ", *ptr);
if(bufptr - buf >= sizeof(buf) - 7) {
shell_output_str(&hd_command, buf, "");
bufptr = buf;
}
ptr++;
}
if(bufptr != buf) {
shell_output_str(&hd_command, buf, "");
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_binprint_process, ev, data)
{
struct shell_input *input;
uint16_t *ptr;
int i;
char buf[2*64], *bufptr;
PROCESS_BEGIN();
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
bufptr = buf;
ptr = (uint16_t *)input->data1;
for(i = 0; i < input->len1 && i < input->len1 - 1; i += 2) {
bufptr += sprintf(bufptr, "%u ", *ptr);
if(bufptr - buf >= sizeof(buf) - 6) {
shell_output_str(&binprint_command, buf, "");
bufptr = buf;
}
ptr++;
}
/* XXX need to check if input->len1 == 1 here, and then shift this
byte into the sequence of 16-bitters below. */
ptr = (uint16_t *)input->data2;
for(i = 0; i < input->len2 && i < input->len2 - 1; i += 2) {
bufptr += sprintf(bufptr, "%u ", *ptr);
if(bufptr - buf >= sizeof(buf) - 6) {
shell_output_str(&binprint_command, buf, "");
bufptr = buf;
}
ptr++;
}
if(bufptr != buf) {
shell_output_str(&binprint_command, buf, "");
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_size_process, ev, data)
{
struct shell_input *input;
static unsigned long size;
PROCESS_BEGIN();
size = 0;
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == shell_event_input);
input = data;
size += input->len1 + input->len2;
if(input->len1 + input->len2 == 0) {
char buf[10];
snprintf(buf, sizeof(buf), "%lu", size);
shell_output_str(&size_command, buf, "");
PROCESS_EXIT();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
shell_text_init(void)
{
shell_register_command(&binprint_command);
shell_register_command(&hd_command);
shell_register_command(&echo_command);
shell_register_command(&dec64_command);
shell_register_command(&size_command);
}
/*---------------------------------------------------------------------------*/