/*-

 * Copyright (c) 2011 Tim Kientzle

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.

 */

#include "archive_platform.h"

#ifdef HAVE_ERRNO_H

#include <errno.h>

#endif

#include "archive_options_private.h"

static const char *

parse_option(const char **str,

    const char **mod, const char **opt, const char **val);

int

_archive_set_option(struct archive *a,

    const char *m, const char *o, const char *v,

    unsigned int magic, const char *fn, option_handler use_option)

{

  const char *mp, *op, *vp;

  int r;

  archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn);

  mp = (m != NULL && m[0] != '\0') ? m : NULL;

  op = (o != NULL && o[0] != '\0') ? o : NULL;

  vp = (v != NULL && v[0] != '\0') ? v : NULL;

  if (op == NULL && vp == NULL)

    return (ARCHIVE_OK);

  if (op == NULL) {

    archive_set_error(a, ARCHIVE_ERRNO_MISC, "Empty option");

    return (ARCHIVE_FAILED);

  }

  r = use_option(a, mp, op, vp);

  if (r == ARCHIVE_WARN - 1) {

    archive_set_error(a, ARCHIVE_ERRNO_MISC,

        "Unknown module name: `%s'", mp);

    return (ARCHIVE_FAILED);

  }

  if (r == ARCHIVE_WARN) {

    archive_set_error(a, ARCHIVE_ERRNO_MISC,

        "Undefined option: `%s%s%s%s%s%s'",

        vp?"":"!", mp?mp:"", mp?":":"", op, vp?"=":"", vp?vp:"");

    return (ARCHIVE_FAILED);

  }

  return (r);

}

int

_archive_set_either_option(struct archive *a, const char *m, const char *o, const char *v,

    option_handler use_format_option, option_handler use_filter_option)

{

  int r1, r2;

  if (o == NULL && v == NULL)

    return (ARCHIVE_OK);

  if (o == NULL)

    return (ARCHIVE_FAILED);

  r1 = use_format_option(a, m, o, v);

  if (r1 == ARCHIVE_FATAL)

    return (ARCHIVE_FATAL);

  r2 = use_filter_option(a, m, o, v);

  if (r2 == ARCHIVE_FATAL)

    return (ARCHIVE_FATAL);

  if (r2 == ARCHIVE_WARN - 1)

    return r1;

  return r1 > r2 ? r1 : r2;

}

int

_archive_set_options(struct archive *a, const char *options,

    unsigned int magic, const char *fn, option_handler use_option)

{

  int allok = 1, anyok = 0, ignore_mod_err = 0, r;

  char *data;

  const char *s, *mod, *opt, *val;

  archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn);

  if (options == NULL || options[0] == '\0')

    return ARCHIVE_OK;

  if ((data = strdup(options)) == NULL) {

    archive_set_error(a,

        ENOMEM, "Out of memory adding file to list");

    return (ARCHIVE_FATAL);

  }

  s = (const char *)data;

  do {

    mod = opt = val = NULL;

    parse_option(&s, &mod, &opt, &val);

    if (mod == NULL && opt != NULL &&

        strcmp("__ignore_wrong_module_name__", opt) == 0) {

      /* Ignore module name error */

      if (val != NULL) {

        ignore_mod_err = 1;

        anyok = 1;

      }

      continue;

    }

    r = use_option(a, mod, opt, val);

    if (r == ARCHIVE_FATAL) {

      free(data);

      return (ARCHIVE_FATAL);

    }

    if (r == ARCHIVE_FAILED && mod != NULL) {

      free(data);

      return (ARCHIVE_FAILED);

    }

    if (r == ARCHIVE_WARN - 1) {

      if (ignore_mod_err)

        continue;

      /* The module name is wrong. */

      archive_set_error(a, ARCHIVE_ERRNO_MISC,

          "Unknown module name: `%s'", mod);

      free(data);

      return (ARCHIVE_FAILED);

    }

    if (r == ARCHIVE_WARN) {

      /* The option name is wrong. No-one used this. */

      archive_set_error(a, ARCHIVE_ERRNO_MISC,

          "Undefined option: `%s%s%s'",

          mod?mod:"", mod?":":"", opt);

      free(data);

      return (ARCHIVE_FAILED);

    }

    if (r == ARCHIVE_OK)

      anyok = 1;

    else

      allok = 0;

  } while (s != NULL);

  free(data);

  return allok ? ARCHIVE_OK : anyok ? ARCHIVE_WARN : ARCHIVE_FAILED;

}

static const char *

parse_option(const char **s, const char **m, const char **o, const char **v)

{

  const char *end, *mod, *opt, *val;

  char *p;

  end = NULL;

  mod = NULL;

  opt = *s;

  val = "1";

  p = strchr(opt, ',');

  if (p != NULL) {

    *p = '\0';

    end = ((const char *)p) + 1;

  }

  if (0 == strlen(opt)) {

    *s = end;

    *m = NULL;

    *o = NULL;

    *v = NULL;

    return end;

  }

  p = strchr(opt, ':');

  if (p != NULL) {

    *p = '\0';

    mod = opt;

    opt = ++p;

  }

  p = strchr(opt, '=');

  if (p != NULL) {

    *p = '\0';

    val = ++p;

  } else if (opt[0] == '!') {

    ++opt;

    val = NULL;

  }

  *s = end;

  *m = mod;

  *o = opt;

  *v = val;

  return end;

}