Add apps/netutils/codecs and associated NSH commands from Darcy Gong

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5280 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 538 insertions, 0 deletions

diff --git a/apps/nshlib/nsh_codeccmd.c b/apps/nshlib/nsh_codeccmd.c
new file mode 100644
index 000000000..8c1f5adbd
--- /dev/null
+++ b/apps/nshlib/nsh_codeccmd.c
@@ -0,0 +1,538 @@
+/****************************************************************************

+ * apps/nshlib/nsh_apps.c

+ *

+ * This file is part of NuttX, contributed by Darcy Gong

+ *

+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.

+ *   Author: Darcy Gong 2012-10-30

+ *

+ * 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 NuttX 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 COPYRIGHT HOLDERS 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

+ * COPYRIGHT OWNER 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.

+ *

+ ****************************************************************************/

+

+/****************************************************************************

+ * Included Files

+ ****************************************************************************/

+

+#include <nuttx/config.h>

+#ifdef CONFIG_NETUTILS_CODECS

+

+#include <sys/stat.h>

+#include <stdint.h>

+#include <stdbool.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <unistd.h>

+#include <string.h>

+#include <sched.h>

+#include <fcntl.h>

+#include <libgen.h>

+#include <errno.h>

+#include <debug.h>

+

+#if defined(CONFIG_NSH_DISABLE_URLENCODE) && defined(CONFIG_NSH_DISABLE_URLDECODE)

+#  undef CONFIG_CODECS_URLCODE

+#endif

+

+#ifdef CONFIG_CODECS_URLCODE

+#include <apps/netutils/urldecode.h>

+#endif

+

+#if defined(CONFIG_NSH_DISABLE_BASE64ENC) && defined(CONFIG_NSH_DISABLE_BASE64ENC)

+#  undef CONFIG_CODECS_BASE64

+#endif

+

+#ifdef CONFIG_CODECS_BASE64

+#include <apps/netutils/base64.h>

+#endif

+

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+#include <apps/netutils/md5.h>

+#endif

+

+#include "nsh.h"

+#include "nsh_console.h"

+

+/****************************************************************************

+ * Pre-processor Definitions

+ ****************************************************************************/

+

+#ifndef CONFIG_NSH_CODECS_BUFSIZE

+#  define CONFIG_NSH_CODECS_BUFSIZE    128

+#endif

+

+#define CODEC_MODE_URLENCODE  1

+#define CODEC_MODE_URLDECODE  2

+#define CODEC_MODE_BASE64ENC  3

+#define CODEC_MODE_BASE64DEC  4

+#define CODEC_MODE_HASH_MD5   5

+

+/****************************************************************************

+ * Private Types

+ ****************************************************************************/

+

+typedef void (*codec_callback_t)(FAR char *src_buff, int src_buff_len,

+                                 FAR char *dst_buff, FAR int *dst_buff_len,

+                                 int mode);

+

+/****************************************************************************

+ * Private Functions

+ ****************************************************************************/

+

+/****************************************************************************

+ * Name: urlencode_cb

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLENCODE)

+static void urlencode_cb(FAR char *src_buff, int src_buff_len,

+                         FAR char *dst_buff, FAR int *dst_buff_len, int mode)

+{

+  urlencode(src_buff,src_buff_len,dst_buff,dst_buff_len);

+}

+#endif

+

+/****************************************************************************

+ * Name: urldecode_cb

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)

+static void urldecode_cb(FAR char *src_buff, int src_buff_len, FAR char *dst_buff,

+                         FAR int *dst_buff_len, int mode)

+{

+  urldecode(src_buff,src_buff_len,dst_buff,dst_buff_len);

+}

+#endif

+

+/****************************************************************************

+ * Name: b64enc_cb

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)

+static void b64enc_cb(FAR char *src_buff, int src_buff_len, FAR char *dst_buff,

+                      FAR int *dst_buff_len, int mode)

+{

+  if (mode == 0)

+    {

+      //dst_buff =

+      base64_encode((unsigned char *)src_buff, src_buff_len,

+                    (unsigned char *)dst_buff, (size_t *)dst_buff_len);

+    }

+  else

+    {

+      //dst_buff =

+      base64w_encode((unsigned char *)src_buff, src_buff_len,

+                     (unsigned char *)dst_buff, (size_t *)dst_buff_len);

+    }

+}

+#endif

+

+/****************************************************************************

+ * Name: b64dec_cb

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64DEC)

+static void b64dec_cb(FAR char *src_buff, int src_buff_len, FAR char *dst_buff,

+                      FAR int *dst_buff_len, int mode)

+{

+  if (mode == 0)

+    {

+      //dst_buff =

+      base64_decode((unsigned char *)src_buff, src_buff_len,

+                    (unsigned char *)dst_buff, (size_t *)dst_buff_len);

+    }

+  else

+    {

+      //dst_buff =

+      base64w_decode((unsigned char *)src_buff, src_buff_len,

+                     (unsigned char *)dst_buff,(size_t *)dst_buff_len);

+    }

+}

+#endif

+

+/****************************************************************************

+ * Name: md5_cb

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+static void md5_cb(FAR char *src_buff, int src_buff_len, FAR char *dst_buff,

+                   FAR int *dst_buff_len, int mode)

+{

+  MD5Update((MD5_CTX *)dst_buff, (unsigned char *)src_buff, src_buff_len);

+}

+#endif

+

+/****************************************************************************

+ * Name: calc_codec_buffsize

+ ****************************************************************************/

+

+static int calc_codec_buffsize(int src_buffsize, uint8_t mode)

+{

+  switch (mode)

+  {

+  case CODEC_MODE_URLENCODE:

+    return src_buffsize*3+1;

+  case CODEC_MODE_URLDECODE:

+    return src_buffsize+1;

+  case CODEC_MODE_BASE64ENC:

+    return ((src_buffsize + 2)/ 3 * 4)+1;

+  case CODEC_MODE_BASE64DEC:

+    return (src_buffsize / 4 * 3 + 2)+1;

+  case CODEC_MODE_HASH_MD5:

+    return 32+1;

+  default:

+    return src_buffsize+1;

+  }

+}

+

+/****************************************************************************

+ * Name: cmd_codecs_proc

+ ****************************************************************************/

+

+static int cmd_codecs_proc(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv,

+                           uint8_t mode, codec_callback_t func)

+{

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+  static const unsigned char hex_chars[] = "0123456789abcdef";

+  MD5_CTX ctx;

+  unsigned char mac[16];

+  char *pSrc;

+  char *pDest;

+#endif

+

+  char *localfile = NULL;

+  char *src_buffer = NULL;

+  char *buffer = NULL;

+  char *fullpath = NULL;

+  const char *fmt;

+  char *s_data;

+  bool badarg = false;

+  bool is_file = false;

+  bool is_websafe=false;

+  int option;

+  int fd = -1;

+  int buff_len = 0;

+  int src_buff_len = 0;

+  int i = 0;

+  int ret = OK;

+

+  /* Get the command options */

+

+  while ((option = getopt(argc, argv, ":fw")) != ERROR)

+    {

+      switch (option)

+        {

+          case 'f':

+            is_file = true;

+            break;

+

+#ifdef CONFIG_CODECS_BASE64

+          case 'w':

+            is_websafe = true;

+

+            if (!(mode == CODEC_MODE_BASE64ENC || mode == CODEC_MODE_BASE64DEC))

+              {

+                badarg = true;

+              }

+            break;

+#endif

+          case ':':

+            nsh_output(vtbl, g_fmtargrequired, argv[0]);

+            badarg = true;

+            break;

+

+          case '?':

+          default:

+            nsh_output(vtbl, g_fmtarginvalid, argv[0]);

+            badarg = true;

+            break;

+        }

+    }

+

+  /* If a bad argument was encountered, then return without processing the command */

+

+  if (badarg)

+    {

+      return ERROR;

+    }

+

+  /* There should be exactly on parameter left on the command-line */

+

+  if (optind == argc-1)

+    {

+      s_data = argv[optind];

+    }

+  else if (optind >= argc)

+    {

+      fmt = g_fmttoomanyargs;

+      goto errout;

+    }

+  else

+    {

+      fmt = g_fmtargrequired;

+      goto errout;

+    }

+

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+  if (mode == CODEC_MODE_HASH_MD5)

+    {

+      MD5Init(&ctx);

+    }

+#endif

+

+  if (is_file)

+    {

+      /* Get the local file name */

+

+      localfile = s_data;

+

+      /* Get the full path to the local file */

+

+      fullpath = nsh_getfullpath(vtbl, localfile);

+

+      /* Open the local file for writing */

+

+      fd = open(fullpath, O_RDONLY|O_TRUNC, 0644);

+      if (fd < 0)

+        {

+          nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);

+          ret = ERROR;

+          goto exit;

+        }

+

+      src_buffer = malloc(CONFIG_NSH_CODECS_BUFSIZE+2);

+#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)

+      if (mode == CODEC_MODE_BASE64ENC)

+        {

+          src_buff_len = CONFIG_NSH_CODECS_BUFSIZE / 3 * 3;

+        }

+      else

+#endif

+        {

+          src_buff_len = CONFIG_NSH_CODECS_BUFSIZE;

+        }

+

+      buff_len = calc_codec_buffsize(src_buff_len+2, mode);

+      buffer = malloc(buff_len);

+      while(true)

+        {

+          memset(src_buffer, 0, src_buff_len+2);

+          ret=read(fd, src_buffer, src_buff_len);

+          if (ret < 0)

+            {

+              nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);

+              ret = ERROR;

+              goto exit;

+            }

+          else if(ret==0)

+            {

+              break;

+            }

+

+#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)

+          if (mode == CODEC_MODE_URLDECODE)

+            {

+              if (src_buffer[src_buff_len-1]=='%')

+                {

+                  ret += read(fd,&src_buffer[src_buff_len],2);

+                }

+              else if (src_buffer[src_buff_len-2]=='%')

+                {

+                  ret += read(fd,&src_buffer[src_buff_len],1);

+                }

+            }

+#endif

+          memset(buffer, 0, buff_len);

+          if (func)

+            {

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+              if (mode == CODEC_MODE_HASH_MD5)

+                {

+                  func(src_buffer, ret, (char *)&ctx, &buff_len,0);

+                }

+              else

+#endif

+                {

+                  func(src_buffer, ret, buffer, &buff_len,(is_websafe)?1:0);

+                  nsh_output(vtbl, "%s", buffer);

+                }

+            }

+

+          buff_len = calc_codec_buffsize(src_buff_len+2, mode);

+        }

+

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+      if (mode == CODEC_MODE_HASH_MD5)

+        {

+          MD5Final(mac, &ctx);

+          pSrc = (char *)&mac;

+          pDest = buffer;

+          for(i=0;i<16;i++,pSrc++)

+            {

+              *pDest++ = hex_chars[(*pSrc) >> 4];

+              *pDest++ = hex_chars[(*pSrc) & 0x0f];

+            }

+

+          *pDest='\0';

+          nsh_output(vtbl, "%s\n", buffer);

+        }

+#endif

+      ret = OK;

+      goto exit;

+    }

+  else

+    {

+      src_buffer = s_data;

+      src_buff_len = strlen(s_data);

+      buff_len = calc_codec_buffsize(src_buff_len, mode);

+      buffer = malloc(buff_len);

+      buffer[0]=0;

+      if (!buffer)

+        {

+          fmt = g_fmtcmdoutofmemory;

+          goto errout;

+        }

+

+      memset(buffer, 0, buff_len);

+      if (func)

+        {

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+          if (mode == CODEC_MODE_HASH_MD5)

+            {

+              func(src_buffer, src_buff_len, (char *)&ctx, &buff_len, 0);

+              MD5Final(mac, &ctx);

+              pSrc = (char *)&mac;

+              pDest = buffer;

+              for(i=0;i<16;i++,pSrc++)

+                {

+                  *pDest++ = hex_chars[(*pSrc) >> 4];

+                  *pDest++ = hex_chars[(*pSrc) & 0x0f];

+                }

+

+              *pDest='\0';

+            }

+          else

+#endif

+            {

+              func(src_buffer, src_buff_len, buffer, &buff_len,(is_websafe)?1:0);

+            }

+        }

+

+      nsh_output(vtbl, "%s\n",buffer);

+      src_buffer = NULL;

+      goto exit;

+    }

+

+exit:

+  if (fd >= 0)

+    {

+      close(fd);

+    }

+

+  if (fullpath)

+    {

+      free(fullpath);

+    }

+

+  if (src_buffer)

+    {

+      free(src_buffer);

+    }

+

+  if (buffer)

+    {

+      free(buffer);

+    }

+

+  return ret;

+

+errout:

+  nsh_output(vtbl, fmt, argv[0]);

+  ret = ERROR;

+  goto exit;

+}

+

+/****************************************************************************

+ * Public Functions

+ ****************************************************************************/

+

+/****************************************************************************

+ * Name: cmd_urlencode

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLENCODE)

+int cmd_urlencode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)

+{

+  return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLENCODE, urlencode_cb);

+}

+#endif

+

+/****************************************************************************

+ * Name: cmd_urldecode

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_URLCODE) && !defined(CONFIG_NSH_DISABLE_URLDECODE)

+int cmd_urldecode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)

+{

+  return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_URLDECODE, urldecode_cb);

+}

+#endif

+

+/****************************************************************************

+ * Name: cmd_base64encode

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64ENC)

+int cmd_base64encode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)

+{

+  return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64ENC, b64enc_cb);

+}

+#endif

+

+/****************************************************************************

+ * Name: cmd_base64decode

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_BASE64) && !defined(CONFIG_NSH_DISABLE_BASE64DEC)

+int cmd_base64decode(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)

+{

+  return cmd_codecs_proc(vtbl, argc, argv, CODEC_MODE_BASE64DEC, b64dec_cb);

+}

+#endif

+

+/****************************************************************************

+ * Name: cmd_md5

+ ****************************************************************************/

+

+#if defined(CONFIG_CODECS_HASH_MD5) && !defined(CONFIG_NSH_DISABLE_MD5)

+int cmd_md5(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)

+{

+  return cmd_codecs_proc(vtbl,argc,argv,CODEC_MODE_HASH_MD5,md5_cb);

+}

+#endif

+

+#endif /* CONFIG_NETUTILS_CODECS */