539 lines
15 KiB
C
539 lines
15 KiB
C
/****************************************************************************
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* apps/nshlib/nsh_codeccmd.c
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*
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* This file is part of NuttX, contributed by Darcy Gong
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Darcy Gong 2012-10-30
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifdef CONFIG_NETUTILS_CODECS
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#include <sys/stat.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sched.h>
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#include <fcntl.h>
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#include <libgen.h>
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#include <errno.h>
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#include <debug.h>
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#if defined(CONFIG_NSH_DISABLE_URLENCODE) && defined(CONFIG_NSH_DISABLE_URLDECODE)
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# undef CONFIG_CODECS_URLCODE
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#endif
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#ifdef CONFIG_CODECS_URLCODE
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#include "netutils/urldecode.h"
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#endif
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#if defined(CONFIG_NSH_DISABLE_BASE64ENC) && defined(CONFIG_NSH_DISABLE_BASE64ENC)
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# undef CONFIG_CODECS_BASE64
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#endif
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#ifdef CONFIG_CODECS_BASE64
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#include "netutils/base64.h"
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#endif
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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#include "netutils/md5.h"
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#endif
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#include "nsh.h"
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#include "nsh_console.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_NSH_CODECS_BUFSIZE
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# define CONFIG_NSH_CODECS_BUFSIZE 128
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#endif
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#define CODEC_MODE_URLENCODE 1
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#define CODEC_MODE_URLDECODE 2
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#define CODEC_MODE_BASE64ENC 3
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#define CODEC_MODE_BASE64DEC 4
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#define CODEC_MODE_HASH_MD5 5
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/****************************************************************************
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* Private Types
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****************************************************************************/
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typedef void (*codec_callback_t)(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode);
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: urlencode_cb
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****************************************************************************/
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLENCODE)
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static void urlencode_cb(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode)
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{
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urlencode(src, srclen, dest, destlen);
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}
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#endif
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/****************************************************************************
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* Name: urldecode_cb
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****************************************************************************/
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)
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static void urldecode_cb(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode)
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{
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urldecode(src,srclen,dest,destlen);
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}
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#endif
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/****************************************************************************
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* Name: b64enc_cb
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****************************************************************************/
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)
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static void b64enc_cb(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode)
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{
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if (mode == 0)
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{
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base64_encode((unsigned char *)src, srclen,
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(unsigned char *)dest, (size_t *)destlen);
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}
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else
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{
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base64w_encode((unsigned char *)src, srclen,
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(unsigned char *)dest, (size_t *)destlen);
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}
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}
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#endif
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/****************************************************************************
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* Name: b64dec_cb
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****************************************************************************/
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64DEC)
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static void b64dec_cb(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode)
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{
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if (mode == 0)
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{
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base64_decode((unsigned char *)src, srclen,
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(unsigned char *)dest, (size_t *)destlen);
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}
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else
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{
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base64w_decode((unsigned char *)src, srclen,
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(unsigned char *)dest,(size_t *)destlen);
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}
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}
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#endif
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/****************************************************************************
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* Name: md5_cb
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****************************************************************************/
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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static void md5_cb(FAR char *src, int srclen, FAR char *dest,
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FAR int *destlen, int mode)
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{
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MD5Update((MD5_CTX *)dest, (unsigned char *)src, srclen);
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}
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#endif
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/****************************************************************************
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* Name: calc_codec_buffsize
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****************************************************************************/
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static int calc_codec_buffsize(int srclen, uint8_t mode)
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{
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switch (mode)
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{
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case CODEC_MODE_URLENCODE:
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return srclen * 3 + 1;
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case CODEC_MODE_URLDECODE:
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return srclen + 1;
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case CODEC_MODE_BASE64ENC:
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return ((srclen + 2) / 3 * 4) + 1;
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case CODEC_MODE_BASE64DEC:
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return (srclen / 4 * 3 + 2) + 1;
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case CODEC_MODE_HASH_MD5:
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return 32 + 1;
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default:
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return srclen + 1;
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}
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}
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/****************************************************************************
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* Name: cmd_codecs_proc
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****************************************************************************/
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static int cmd_codecs_proc(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv,
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uint8_t mode, codec_callback_t func)
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{
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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static const unsigned char hexchars[] = "0123456789abcdef";
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MD5_CTX ctx;
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unsigned char mac[16];
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FAR char *src;
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FAR char *dest;
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#endif
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FAR char *localfile = NULL;
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FAR char *srcbuf = NULL;
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FAR char *destbuf = NULL;
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FAR char *fullpath = NULL;
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FAR const char *fmt;
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FAR char *sdata;
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bool badarg = false;
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bool isfile = false;
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bool iswebsafe = false;
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int option;
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int fd = -1;
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int buflen = 0;
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int srclen = 0;
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int i = 0;
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int ret = OK;
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/* Get the command options */
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while ((option = getopt(argc, argv, ":fw")) != ERROR)
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{
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switch (option)
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{
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case 'f':
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isfile = true;
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break;
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#ifdef CONFIG_CODECS_BASE64
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case 'w':
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iswebsafe = true;
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if (!(mode == CODEC_MODE_BASE64ENC || mode == CODEC_MODE_BASE64DEC))
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{
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badarg = true;
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}
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break;
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#endif
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case ':':
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nsh_output(vtbl, g_fmtargrequired, argv[0]);
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badarg = true;
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break;
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case '?':
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default:
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nsh_output(vtbl, g_fmtarginvalid, argv[0]);
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badarg = true;
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break;
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}
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}
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/* If a bad argument was encountered, then return without processing the command */
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if (badarg)
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{
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return ERROR;
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}
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/* There should be exactly on parameter left on the command-line */
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if (optind == argc-1)
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{
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sdata = argv[optind];
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}
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else if (optind >= argc)
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{
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fmt = g_fmttoomanyargs;
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goto errout;
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}
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else
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{
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fmt = g_fmtargrequired;
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goto errout;
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}
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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if (mode == CODEC_MODE_HASH_MD5)
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{
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MD5Init(&ctx);
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}
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#endif
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if (isfile)
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{
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/* Get the local file name */
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localfile = sdata;
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/* Get the full path to the local file */
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fullpath = nsh_getfullpath(vtbl, localfile);
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/* Open the local file for reading */
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fd = open(fullpath, O_RDONLY);
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if (fd < 0)
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{
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nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
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ret = ERROR;
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goto exit;
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}
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srcbuf = malloc(CONFIG_NSH_CODECS_BUFSIZE+2);
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)
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if (mode == CODEC_MODE_BASE64ENC)
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{
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srclen = CONFIG_NSH_CODECS_BUFSIZE / 3 * 3;
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}
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else
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#endif
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{
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srclen = CONFIG_NSH_CODECS_BUFSIZE;
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}
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buflen = calc_codec_buffsize(srclen+2, mode);
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destbuf = malloc(buflen);
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while (true)
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{
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memset(srcbuf, 0, srclen+2);
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ret=read(fd, srcbuf, srclen);
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if (ret < 0)
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{
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nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);
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ret = ERROR;
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goto exit;
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}
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else if (ret==0)
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{
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break;
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}
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)
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if (mode == CODEC_MODE_URLDECODE)
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{
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if (srcbuf[srclen-1]=='%')
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{
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ret += read(fd,&srcbuf[srclen],2);
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}
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else if (srcbuf[srclen-2]=='%')
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{
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ret += read(fd,&srcbuf[srclen],1);
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}
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}
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#endif
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memset(destbuf, 0, buflen);
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if (func)
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{
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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if (mode == CODEC_MODE_HASH_MD5)
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{
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func(srcbuf, ret, (char *)&ctx, &buflen,0);
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}
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else
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#endif
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{
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func(srcbuf, ret, destbuf, &buflen,(iswebsafe)?1:0);
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nsh_output(vtbl, "%s", destbuf);
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}
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}
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buflen = calc_codec_buffsize(srclen+2, mode);
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}
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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if (mode == CODEC_MODE_HASH_MD5)
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{
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MD5Final(mac, &ctx);
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src = (FAR char *)&mac;
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dest = destbuf;
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for (i = 0; i < 16; i++, src++)
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{
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*dest++ = hexchars[(*src) >> 4];
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*dest++ = hexchars[(*src) & 0x0f];
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}
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*dest = '\0';
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nsh_output(vtbl, "%s\n", destbuf);
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}
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#endif
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ret = OK;
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goto exit;
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}
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else
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{
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srcbuf = sdata;
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srclen = strlen(sdata);
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buflen = calc_codec_buffsize(srclen, mode);
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destbuf = malloc(buflen);
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destbuf[0]=0;
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if (!destbuf)
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{
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fmt = g_fmtcmdoutofmemory;
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goto errout;
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}
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memset(destbuf, 0, buflen);
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if (func)
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{
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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if (mode == CODEC_MODE_HASH_MD5)
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{
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func(srcbuf, srclen, (char *)&ctx, &buflen, 0);
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MD5Final(mac, &ctx);
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src = (char *)&mac;
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dest = destbuf;
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for (i = 0; i < 16; i++, src++)
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{
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*dest++ = hexchars[(*src) >> 4];
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*dest++ = hexchars[(*src) & 0x0f];
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}
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*dest = '\0';
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}
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else
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#endif
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{
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func(srcbuf, srclen, destbuf, &buflen,(iswebsafe)?1:0);
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}
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}
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nsh_output(vtbl, "%s\n",destbuf);
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srcbuf = NULL;
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goto exit;
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}
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exit:
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if (fd >= 0)
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{
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close(fd);
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}
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if (fullpath)
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{
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free(fullpath);
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}
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if (srcbuf)
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{
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free(srcbuf);
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}
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if (destbuf)
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{
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free(destbuf);
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}
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return ret;
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errout:
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nsh_output(vtbl, fmt, argv[0]);
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ret = ERROR;
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goto exit;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: cmd_urlencode
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****************************************************************************/
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLENCODE)
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int cmd_urlencode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLENCODE, urlencode_cb);
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}
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#endif
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/****************************************************************************
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* Name: cmd_urldecode
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****************************************************************************/
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)
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int cmd_urldecode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLDECODE, urldecode_cb);
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}
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#endif
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/****************************************************************************
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* Name: cmd_base64encode
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****************************************************************************/
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)
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int cmd_base64encode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64ENC, b64enc_cb);
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}
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#endif
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/****************************************************************************
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* Name: cmd_base64decode
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****************************************************************************/
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64DEC)
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int cmd_base64decode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64DEC, b64dec_cb);
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}
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#endif
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/****************************************************************************
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* Name: cmd_md5
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****************************************************************************/
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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int cmd_md5(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_HASH_MD5, md5_cb);
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}
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#endif
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#endif /* CONFIG_NETUTILS_CODECS */
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