581 lines
15 KiB
C
581 lines
15 KiB
C
/****************************************************************************
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* apps/nshlib/nsh_codeccmd.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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_BASE64DEC)
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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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#undef NEED_CMD_CODECS_PROC
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#undef HAVE_CODECS_URLENCODE
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#undef HAVE_CODECS_URLDECODE
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#undef HAVE_CODECS_BASE64ENC
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#undef HAVE_CODECS_BASE64DEC
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#undef HAVE_CODECS_HASH_MD5
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLENCODE)
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# define HAVE_CODECS_URLENCODE 1
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#endif
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#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)
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# define HAVE_CODECS_URLDECODE 1
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#endif
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)
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# define HAVE_CODECS_BASE64ENC 1
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#endif
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#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64DEC)
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# define HAVE_CODECS_BASE64DEC 1
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#endif
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#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)
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# define HAVE_CODECS_HASH_MD5 1
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#endif
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#if defined(HAVE_CODECS_URLENCODE) || defined(HAVE_CODECS_URLDECODE) || \
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defined(HAVE_CODECS_BASE64ENC) || defined(HAVE_CODECS_BASE64DEC) || \
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defined(HAVE_CODECS_HASH_MD5)
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# define NEED_CMD_CODECS_PROC 1
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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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#ifdef HAVE_CODECS_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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#ifdef HAVE_CODECS_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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#ifdef HAVE_CODECS_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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#ifdef HAVE_CODECS_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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#ifdef HAVE_CODECS_HASH_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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md5_update((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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#ifdef NEED_CMD_CODECS_PROC
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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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#endif
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/****************************************************************************
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* Name: cmd_codecs_proc
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****************************************************************************/
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#ifdef NEED_CMD_CODECS_PROC
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static int cmd_codecs_proc(FAR struct nsh_vtbl_s *vtbl, int argc,
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FAR char **argv, uint8_t mode,
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codec_callback_t func)
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{
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#ifdef HAVE_CODECS_HASH_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 unsigned 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 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 ||
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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_error(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_error(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
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* the command
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*/
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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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#ifdef HAVE_CODECS_HASH_MD5
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if (mode == CODEC_MODE_HASH_MD5)
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{
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md5_init(&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_error(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 (!srcbuf)
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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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#ifdef HAVE_CODECS_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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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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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_error(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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#ifdef HAVE_CODECS_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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#ifdef HAVE_CODECS_HASH_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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|
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#ifdef HAVE_CODECS_HASH_MD5
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if (mode == CODEC_MODE_HASH_MD5)
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{
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int i;
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md5_final(mac, &ctx);
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src = 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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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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|
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memset(destbuf, 0, buflen);
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if (func)
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{
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#ifdef HAVE_CODECS_HASH_MD5
|
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if (mode == CODEC_MODE_HASH_MD5)
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{
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int i;
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func(srcbuf, srclen, (char *)&ctx, &buflen, 0);
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md5_final(mac, &ctx);
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src = 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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|
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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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|
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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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}
|
|
|
|
if (fullpath)
|
|
{
|
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free(fullpath);
|
|
}
|
|
|
|
if (srcbuf)
|
|
{
|
|
free(srcbuf);
|
|
}
|
|
|
|
if (destbuf)
|
|
{
|
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free(destbuf);
|
|
}
|
|
|
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return ret;
|
|
|
|
errout:
|
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nsh_output(vtbl, fmt, argv[0]);
|
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ret = ERROR;
|
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goto exit;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: cmd_urlencode
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_CODECS_URLENCODE
|
|
int cmd_urlencode(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv)
|
|
{
|
|
return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLENCODE,
|
|
urlencode_cb);
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: cmd_urldecode
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_CODECS_URLDECODE
|
|
int cmd_urldecode(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv)
|
|
{
|
|
return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLDECODE,
|
|
urldecode_cb);
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: cmd_base64encode
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_CODECS_BASE64ENC
|
|
int cmd_base64encode(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv)
|
|
{
|
|
return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64ENC, b64enc_cb);
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: cmd_base64decode
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_CODECS_BASE64DEC
|
|
int cmd_base64decode(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv)
|
|
{
|
|
return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64DEC, b64dec_cb);
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: cmd_md5
|
|
****************************************************************************/
|
|
|
|
#ifdef HAVE_CODECS_HASH_MD5
|
|
int cmd_md5(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv)
|
|
{
|
|
return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_HASH_MD5, md5_cb);
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_NETUTILS_CODECS */
|