ndb_dump_frm_data.cpp

/* Copyright (c) 2003, 2021, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */

#include <ndb_global.h>
#include <ndb_opts.h>

#include <NdbOut.hpp>
#include <NdbApi.hpp>
#include <NDBT.hpp>

static struct my_option
my_long_options[] =
{
  { "help", '?',
    "Display this help and exit.",
    0, 0, 0,
    GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0 },
  { 0, 0,
    0,
    0, 0, 0,
    GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0 }
};

const char*
load_default_groups[]= { 0 };

static void
short_usage_sub(void)
{
  ndb_short_usage_sub("*.frm ...");
}

static void
usage()
{
  printf("%s: pack and dump *.frm as C arrays\n", my_progname);
  ndb_usage(short_usage_sub, load_default_groups, my_long_options);
}

static void
dodump(const char* name, const uchar* frm_data, uint frm_len)
{
  printf("const uint g_%s_frm_len = %u;\n\n", name, frm_len);
  printf("const uint8 g_%s_frm_data[%u] =\n{\n", name, frm_len);
  uint n = 0;
  while (n < frm_len) {
    if (n % 8 == 0) {
      if (n != 0) {
        printf("\n");
      }
      printf("  ");
    }
    printf("0x%02x", frm_data[n]);
    if (n + 1 < frm_len) {
            printf(",");
    }
    n++;
  }
  if (n % 8 != 0) {
    printf("\n");
  }
  printf("};\n");
}

static int
dofile(const char* file)
{
  struct stat st;
  size_t size = 0;
  uchar* data = 0;
  int fd = -1;
  uchar* pack_data = 0;
  size_t pack_len = 0;
  char* namebuf = 0;
  int ret = -1;
  do
  {
    if (stat(file, &st) == -1)
    {
      fprintf(stderr, "%s: stat: %s\n", file, strerror(errno));
      break;
    }
    size = st.st_size;
    if ((data = (uchar*)malloc(size)) == 0)
    {
      fprintf(stderr, "%s: malloc %u: %s\n", file, (uint)size, strerror(errno));
      break;
    }
    if ((fd = open(file, O_RDONLY)) == -1)
    {
      fprintf(stderr, "%s: open: %s\n", file, strerror(errno));
      break;
    }
    ssize_t size2;
    if ((size2 = read(fd, data, (unsigned)size)) == -1)
    {
      fprintf(stderr, "%s: read: %s\n", file, strerror(errno));
      break;
    }
    if ((size_t)size2 != size)
    {
      fprintf(stderr, "%s: short read: %u != %u\n", file, (uint)size2, (uint)size);
      break;
    }
    int error;
    if ((error = packfrm(data, size, &pack_data, &pack_len)) != 0)
    {
      fprintf(stderr, "%s: packfrm: error %d\n", file, error);
      break;
    }
    namebuf = strdup(file);
    if (namebuf == 0)
    {
      fprintf(stderr, "%s: strdup: %s\n", file, strerror(errno));
      break;
    }
    char* name = namebuf;
    if (strchr(name, '/') != 0)
      name = strrchr(name, '/') + 1;
    char* dot;
    if ((dot = strchr(name, '.')) != 0)
      *dot = 0;
    printf("\n/*\n");
    printf("  name: %s\n", name);
    printf("  orig: %u\n", (uint)size);
    printf("  pack: %u\n", (uint)pack_len);
    printf("*/\n\n");
    dodump(name, pack_data, (uint)pack_len);
    ret = 0;
  }
  while (0);
  if (namebuf != 0)
    free(namebuf);
  if (pack_data != 0)
    my_free(pack_data); // Free data returned from packfrm with my_free
  if (fd != -1)
    (void)close(fd);
  if (data != 0)
    free(data);
  return ret;
}

int
main(int argc, char** argv)
{
  my_progname = "ndb_pack_frm";
  int ret;

  ndb_init();
  ndb_opt_set_usage_funcs(short_usage_sub, usage);
  ret = handle_options(&argc, &argv, my_long_options, ndb_std_get_one_option);
 if (ret != 0)
    return NDBT_WRONGARGS;

  for (int i = 0; i < argc; i++)
  {
    ret = dofile(argv[i]);
    if (ret != 0)
      return NDBT_FAILED;
  }

  return NDBT_OK;
}