/*

 * Copyright (C) 2012 Red Hat Inc.

 *

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

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *     * Redistributions of source code must retain the above

 *       copyright notice, this list of conditions and the

 *       following disclaimer.

 *     * 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.

 *     * The names of contributors to this software may not 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.

 *

 * Author: Stef Walter <stefw@redhat.com>

 */

#include "config.h"

#include "array.h"

#include "asn1.h"

#include "attrs.h"

#define P11_DEBUG_FLAG P11_DEBUG_TRUST

#include "debug.h"

#include "dict.h"

#include "digest.h"

#include "message.h"

#include "module.h"

#include "oid.h"

#include "parser.h"

#include "path.h"

#include "pem.h"

#include "pkcs11x.h"

#include "persist.h"

#include "types.h"

#include "x509.h"

#include <libtasn1.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <assert.h>

#include <errno.h>

#include <fcntl.h>

#include <stdarg.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#ifdef ENABLE_NLS

#include <libintl.h>

#define _(x) dgettext(PACKAGE_NAME, x)

#else

#define _(x) (x)

#endif

struct _p11_parser {

  p11_asn1_cache *asn1_cache;

  p11_dict *asn1_defs;

  bool asn1_owned;

  p11_persist *persist;

  char *basename;

  p11_array *parsed;

  p11_array *formats;

  int flags;

};

#define ID_LENGTH P11_DIGEST_SHA1_LEN

typedef int (* parser_func)   (p11_parser *parser,

                               const unsigned char *data,

                               size_t length);

static CK_ATTRIBUTE *

populate_trust (p11_parser *parser,

                CK_ATTRIBUTE *attrs)

{

  CK_BBOOL trustedv;

  CK_BBOOL distrustv;

  CK_ATTRIBUTE trusted = { CKA_TRUSTED, &trustedv, sizeof (trustedv) };

  CK_ATTRIBUTE distrust = { CKA_X_DISTRUSTED, &distrustv, sizeof (distrustv) };

  /*

   * If we're are parsing an anchor location, then warn about any ditsrusted

   * certificates there, but don't go ahead and automatically make them

   * trusted anchors.

   */

  if (parser->flags & P11_PARSE_FLAG_ANCHOR) {

    if (p11_attrs_find_bool (attrs, CKA_X_DISTRUSTED, &distrustv) && distrustv) {

      p11_message (_("certificate with distrust in location for anchors: %s"), parser->basename);

      return attrs;

    }

    trustedv = CK_TRUE;

    distrustv = CK_FALSE;

  /*

   * If we're parsing a blocklist location, then force all certificates to

   * be distrusted, regardless of whether they contain anchor information.

   */

  } else if (parser->flags & P11_PARSE_FLAG_BLOCKLIST) {

    if (p11_attrs_find_bool (attrs, CKA_TRUSTED, &trustedv) && trustedv)

      p11_message (_("overriding trust for anchor in blocklist: %s"), parser->basename);

    trustedv = CK_FALSE;

    distrustv = CK_TRUE;

  /*

   * If the location doesn't have a flag, then fill in trust attributes

   * if they are missing: neither an anchor or blocklist.

   */

  } else {

    trustedv = CK_FALSE;

    distrustv = CK_FALSE;

    if (p11_attrs_find_valid (attrs, CKA_TRUSTED))

      trusted.type = CKA_INVALID;

    if (p11_attrs_find_valid (attrs, CKA_X_DISTRUSTED))

      distrust.type = CKA_INVALID;

  }

  return p11_attrs_build (attrs, &trusted, &distrust, NULL);

}

static void

sink_object (p11_parser *parser,

             CK_ATTRIBUTE *attrs)

{

  CK_OBJECT_CLASS klass;

  if (p11_attrs_find_ulong (attrs, CKA_CLASS, &klass) &&

      klass == CKO_CERTIFICATE) {

    attrs = populate_trust (parser, attrs);

    return_if_fail (attrs != NULL);

  }

  if (!p11_array_push (parser->parsed, attrs))

    return_if_reached ();

}

static CK_ATTRIBUTE *

certificate_attrs (p11_parser *parser,

                   const unsigned char *der,

                   size_t der_len)

{

  CK_OBJECT_CLASS klassv = CKO_CERTIFICATE;

  CK_CERTIFICATE_TYPE x509 = CKC_X_509;

  CK_BBOOL modifiablev = CK_FALSE;

  CK_ATTRIBUTE modifiable = { CKA_MODIFIABLE, &modifiablev, sizeof (modifiablev) };

  CK_ATTRIBUTE klass = { CKA_CLASS, &klassv, sizeof (klassv) };

  CK_ATTRIBUTE certificate_type = { CKA_CERTIFICATE_TYPE, &x509, sizeof (x509) };

  CK_ATTRIBUTE value = { CKA_VALUE, (void *)der, der_len };

  return p11_attrs_build (NULL, &klass, &modifiable, &certificate_type, &value, NULL);

}

int

p11_parser_format_x509 (p11_parser *parser,

                        const unsigned char *data,

                        size_t length)

{

  char message[ASN1_MAX_ERROR_DESCRIPTION_SIZE];

  CK_ATTRIBUTE *attrs;

  CK_ATTRIBUTE *value;

  asn1_node cert;

  cert = p11_asn1_decode (parser->asn1_defs, "PKIX1.Certificate", data, length, message);

  if (cert == NULL)

    return P11_PARSE_UNRECOGNIZED;

  attrs = certificate_attrs (parser, data, length);

  return_val_if_fail (attrs != NULL, P11_PARSE_FAILURE);

  value = p11_attrs_find_valid (attrs, CKA_VALUE);

  return_val_if_fail (value != NULL, P11_PARSE_FAILURE);

  p11_asn1_cache_take (parser->asn1_cache, cert, "PKIX1.Certificate",

                       value->pValue, value->ulValueLen);

  sink_object (parser, attrs);

  return P11_PARSE_SUCCESS;

}

static CK_ATTRIBUTE *

extension_attrs (p11_parser *parser,

                 CK_ATTRIBUTE *public_key_info,

                 const char *oid_str,

                 const unsigned char *oid_der,

                 bool critical,

                 const unsigned char *value,

                 int length)

{

  CK_OBJECT_CLASS klassv = CKO_X_CERTIFICATE_EXTENSION;

  CK_BBOOL modifiablev = CK_FALSE;

  CK_ATTRIBUTE klass = { CKA_CLASS, &klassv, sizeof (klassv) };

  CK_ATTRIBUTE modifiable = { CKA_MODIFIABLE, &modifiablev, sizeof (modifiablev) };

  CK_ATTRIBUTE oid = { CKA_OBJECT_ID, (void *)oid_der, p11_oid_length (oid_der) };

  CK_ATTRIBUTE *attrs;

  asn1_node dest;

  unsigned char *der;

  size_t len;

  int ret;

  attrs = p11_attrs_build (NULL, public_key_info, &klass, &modifiable, &oid, NULL);

  return_val_if_fail (attrs != NULL, NULL);

  dest = p11_asn1_create (parser->asn1_defs, "PKIX1.Extension");

  return_val_if_fail (dest != NULL, NULL);

  ret = asn1_write_value (dest, "extnID", oid_str, 1);

  return_val_if_fail (ret == ASN1_SUCCESS, NULL);

  if (critical)

    ret = asn1_write_value (dest, "critical", "TRUE", 1);

  return_val_if_fail (ret == ASN1_SUCCESS, NULL);

  ret = asn1_write_value (dest, "extnValue", value, length);

  return_val_if_fail (ret == ASN1_SUCCESS, NULL);

  der = p11_asn1_encode (dest, &len);

  return_val_if_fail (der != NULL, NULL);

  attrs = p11_attrs_take (attrs, CKA_VALUE, der, len);

  return_val_if_fail (attrs != NULL, NULL);

  /* An opmitization so that the builder can get at this without parsing */

  p11_asn1_cache_take (parser->asn1_cache, dest, "PKIX1.Extension", der, len);

  return attrs;

}

static CK_ATTRIBUTE *

attached_attrs (p11_parser *parser,

                CK_ATTRIBUTE *public_key_info,

                const char *oid_str,

                const unsigned char *oid_der,

                bool critical,

                asn1_node ext)

{

  CK_ATTRIBUTE *attrs;

  unsigned char *der;

  size_t len;

  der = p11_asn1_encode (ext, &len);

  return_val_if_fail (der != NULL, NULL);

  attrs = extension_attrs (parser, public_key_info, oid_str, oid_der,

                           critical, der, len);

  return_val_if_fail (attrs != NULL, NULL);

  free (der);

  return attrs;

}

static p11_dict *

load_seq_of_oid_str (asn1_node node,

                     const char *seqof)

{

  p11_dict *oids;

  char field[128];

  char *oid;

  size_t len;

  int i;

  oids = p11_dict_new (p11_dict_str_hash, p11_dict_str_equal, free, NULL);

  for (i = 1; ; i++) {

    if (snprintf (field, sizeof (field), "%s.?%u", seqof, i) < 0)

      return_val_if_reached (NULL);

    oid = p11_asn1_read (node, field, &len);

    if (oid == NULL)

      break;

    if (!p11_dict_set (oids, oid, oid))

      return_val_if_reached (NULL);

  }

  return oids;

}

static CK_ATTRIBUTE *

attached_eku_attrs (p11_parser *parser,

                    CK_ATTRIBUTE *public_key_info,

                    const char *oid_str,

                    const unsigned char *oid_der,

                    bool critical,

                    p11_dict *oid_strs)

{

  CK_ATTRIBUTE *attrs;

  p11_dictiter iter;

  asn1_node dest;

  int count = 0;

  void *value;

  int ret;

  dest = p11_asn1_create (parser->asn1_defs, "PKIX1.ExtKeyUsageSyntax");

  return_val_if_fail (dest != NULL, NULL);

  p11_dict_iterate (oid_strs, &iter);

  while (p11_dict_next (&iter, NULL, &value)) {

    ret = asn1_write_value (dest, "", "NEW", 1);

    return_val_if_fail (ret == ASN1_SUCCESS, NULL);

    ret = asn1_write_value (dest, "?LAST", value, -1);

    return_val_if_fail (ret == ASN1_SUCCESS, NULL);

    count++;

  }

  /*

   * If no oids have been written, then we have to put in a reserved

   * value, due to the way that ExtendedKeyUsage is defined in RFC 5280.

   * There must be at least one purpose. This is important since *not*

   * having an ExtendedKeyUsage is very different than having one without

   * certain usages.

   *

   * We account for this in p11_parse_extended_key_usage(). However for

   * most callers this should not matter, as they only check whether a

   * given purpose is present, and don't make assumptions about ones

   * that they don't know about.

   */

  if (count == 0) {

    ret = asn1_write_value (dest, "", "NEW", 1);

    return_val_if_fail (ret == ASN1_SUCCESS, NULL);

    ret = asn1_write_value (dest, "?LAST", P11_OID_RESERVED_PURPOSE_STR, -1);

    return_val_if_fail (ret == ASN1_SUCCESS, NULL);

  }

  attrs = attached_attrs (parser, public_key_info, oid_str, oid_der, critical, dest);

  asn1_delete_structure (&dest);

  return attrs;

}

static CK_ATTRIBUTE *

build_openssl_extensions (p11_parser *parser,

                          CK_ATTRIBUTE *cert,

                          CK_ATTRIBUTE *public_key_info,

                          asn1_node aux,

                          const unsigned char *aux_der,

                          size_t aux_len)

{

  CK_BBOOL trusted = CK_FALSE;

  CK_BBOOL distrust = CK_FALSE;

  CK_ATTRIBUTE trust_attrs[] = {

    { CKA_TRUSTED, &trusted, sizeof (trusted) },

    { CKA_X_DISTRUSTED, &distrust, sizeof (distrust) },

    { CKA_INVALID },

  };

  CK_ATTRIBUTE *attrs;

  p11_dict *trust = NULL;

  p11_dict *reject = NULL;

  p11_dictiter iter;

  void *key;

  int start;

  int end;

  int ret;

  int num;

  /*

   * This will load an empty list if there is no OPTIONAL trust field.

   * OpenSSL assumes that for a TRUSTED CERTIFICATE a missing trust field

   * is identical to untrusted for all purposes.

   *

   * This is different from ExtendedKeyUsage, where a missing certificate

   * extension means that it is trusted for all purposes.

   */

  trust = load_seq_of_oid_str (aux, "trust");

  ret = asn1_number_of_elements (aux, "reject", &num);

  return_val_if_fail (ret == ASN1_SUCCESS || ret == ASN1_ELEMENT_NOT_FOUND, NULL);

  if (ret == ASN1_SUCCESS)

    reject = load_seq_of_oid_str (aux, "reject");

  /* Remove all rejected oids from the trust set */

  if (trust && reject) {

    p11_dict_iterate (reject, &iter);

    while (p11_dict_next (&iter, &key, NULL))

      p11_dict_remove (trust, key);

  }

  /*

   * The trust field (or lack of it) becomes a standard ExtKeyUsageSyntax.

   *

   * critical: require that this is enforced

   */

  if (trust) {

    attrs = attached_eku_attrs (parser, public_key_info,

                                P11_OID_EXTENDED_KEY_USAGE_STR,

                                P11_OID_EXTENDED_KEY_USAGE,

                                true, trust);

    return_val_if_fail (attrs != NULL, NULL);

    sink_object (parser, attrs);

  }

  /*

   * For the reject field we use a custom defined extension. We track this

   * for completeness, although the above ExtendedKeyUsage extension handles

   * this data fine. See oid.h for more details. It uses ExtKeyUsageSyntax structure.

   *

   * non-critical: non-standard, and also covered by trusts

   */

  if (reject && p11_dict_size (reject) > 0) {

    attrs = attached_eku_attrs (parser, public_key_info,

                                P11_OID_OPENSSL_REJECT_STR,

                                P11_OID_OPENSSL_REJECT,

                                false, reject);

    return_val_if_fail (attrs != NULL, NULL);

    sink_object (parser, attrs);

  }

  /*

   * OpenSSL model blocklists as anchors with all purposes being removed/rejected,

   * we account for that here. If there is an ExtendedKeyUsage without any

   * useful purposes, then treat like a blocklist.

   */

  if (trust && p11_dict_size (trust) == 0) {

    trusted = CK_FALSE;

    distrust = CK_TRUE;

  /*

   * Otherwise a 'TRUSTED CERTIFICATE' in an input directory is enough to

   * mark this as a trusted certificate.

   */

  } else if (trust && p11_dict_size (trust) > 0) {

    trusted = CK_TRUE;

    distrust = CK_FALSE;

  }

  /*

   * OpenSSL model blocklists as anchors with all purposes being removed/rejected,

   * we account for that here. If there is an ExtendedKeyUsage without any

   * useful purposes, then treat like a blocklist.

   */

  cert = p11_attrs_merge (cert, p11_attrs_dup (trust_attrs), true);

  return_val_if_fail (cert != NULL, NULL);

  p11_dict_free (trust);

  p11_dict_free (reject);

  /*

   * For the keyid field we use the SubjectKeyIdentifier extension. It

   * is already in the correct form, an OCTET STRING.

   *

   * non-critical: as recommended in RFC 5280

   */

  ret = asn1_der_decoding_startEnd (aux, aux_der, aux_len, "keyid", &start, &end);

  return_val_if_fail (ret == ASN1_SUCCESS || ret == ASN1_ELEMENT_NOT_FOUND, NULL);

  if (ret == ASN1_SUCCESS) {

    attrs = extension_attrs (parser, public_key_info,

                             P11_OID_SUBJECT_KEY_IDENTIFIER_STR,

                             P11_OID_SUBJECT_KEY_IDENTIFIER,

                             false, aux_der + start, (end - start) + 1);

    return_val_if_fail (attrs != NULL, NULL);

    sink_object (parser, attrs);

  }

  return cert;

}

static int

parse_openssl_trusted_certificate (p11_parser *parser,

                                   const unsigned char *data,

                                   size_t length)

{

  char message[ASN1_MAX_ERROR_DESCRIPTION_SIZE];

  CK_ATTRIBUTE *attrs;

  CK_ATTRIBUTE public_key_info = { CKA_PUBLIC_KEY_INFO };

  CK_ATTRIBUTE *value;

  char *label = NULL;

  asn1_node cert;

  asn1_node aux = NULL;

  ssize_t cert_len;

  size_t len;

  int start;

  int end;

  int ret;

  /*

   * This OpenSSL format is weird. It's just two DER structures

   * placed end to end without any wrapping SEQ. So calculate the

   * length of the first DER TLV we see and try to parse that as

   * the X.509 certificate.

   */

  cert_len = p11_asn1_tlv_length (data, length);

  if (cert_len <= 0)

    return P11_PARSE_UNRECOGNIZED;

  cert = p11_asn1_decode (parser->asn1_defs, "PKIX1.Certificate", data, cert_len, message);

  if (cert == NULL)

    return P11_PARSE_UNRECOGNIZED;

  /* OpenSSL sometimes outputs TRUSTED CERTIFICATE format without the CertAux supplement */

  if (cert_len < length) {

    aux = p11_asn1_decode (parser->asn1_defs, "OPENSSL.CertAux", data + cert_len,

                           length - cert_len, message);

    if (aux == NULL) {

      asn1_delete_structure (&cert);

      return P11_PARSE_UNRECOGNIZED;

    }

  }

  attrs = certificate_attrs (parser, data, cert_len);

  return_val_if_fail (attrs != NULL, P11_PARSE_FAILURE);

  /* Cache the parsed certificate ASN.1 for later use by the builder */

  value = p11_attrs_find_valid (attrs, CKA_VALUE);

  return_val_if_fail (value != NULL, P11_PARSE_FAILURE);

  /* Pull out the subject public key info */

  ret = asn1_der_decoding_startEnd (cert, data, cert_len,

                                    "tbsCertificate.subjectPublicKeyInfo", &start, &end);

  return_val_if_fail (ret == ASN1_SUCCESS, P11_PARSE_FAILURE);

  public_key_info.pValue = (char *)data + start;

  public_key_info.ulValueLen = (end - start) + 1;

  p11_asn1_cache_take (parser->asn1_cache, cert, "PKIX1.Certificate",

                       value->pValue, value->ulValueLen);

  /* Pull the label out of the CertAux */

  if (aux) {

    len = 0;

    label = p11_asn1_read (aux, "alias", &len);

    if (label != NULL) {

      attrs = p11_attrs_take (attrs, CKA_LABEL, label, strlen (label));

      return_val_if_fail (attrs != NULL, P11_PARSE_FAILURE);

    }

    attrs = build_openssl_extensions (parser, attrs, &public_key_info, aux,

                                      data + cert_len, length - cert_len);

    return_val_if_fail (attrs != NULL, P11_PARSE_FAILURE);

  }

  sink_object (parser, attrs);

  asn1_delete_structure (&aux);

  return P11_PARSE_SUCCESS;

}

static void

on_pem_block (const char *type,

              const unsigned char *contents,

              size_t length,

              void *user_data)

{

  p11_parser *parser = user_data;

  int ret;

  if (strcmp (type, "CERTIFICATE") == 0) {

    ret = p11_parser_format_x509 (parser, contents, length);

  } else if (strcmp (type, "TRUSTED CERTIFICATE") == 0) {

    ret = parse_openssl_trusted_certificate (parser, contents, length);

  } else {

    p11_debug ("Saw unsupported or unrecognized PEM block of type %s", type);

    ret = P11_PARSE_SUCCESS;

  }

  if (ret != P11_PARSE_SUCCESS)

    p11_message (_("Couldn't parse PEM block of type %s"), type);

}

int

p11_parser_format_pem (p11_parser *parser,

                       const unsigned char *data,

                       size_t length)

{

  int num;

  num = p11_pem_parse ((const char *)data, length, on_pem_block, parser);

  if (num == 0)

    return P11_PARSE_UNRECOGNIZED;

  return P11_PARSE_SUCCESS;

}

int

p11_parser_format_persist (p11_parser *parser,

                           const unsigned char *data,

                           size_t length)

{

  CK_BBOOL modifiablev = CK_TRUE;

  CK_ATTRIBUTE *attrs;

  p11_array *objects;

  bool ret;

  int i;

  CK_ATTRIBUTE modifiable = { CKA_MODIFIABLE, &modifiablev, sizeof (modifiablev) };

  if (!p11_persist_magic (data, length))

    return P11_PARSE_UNRECOGNIZED;

  if (!parser->persist) {

    parser->persist = p11_persist_new ();

    return_val_if_fail (parser->persist != NULL, P11_PARSE_UNRECOGNIZED);

  }

  objects = p11_array_new (NULL);

  return_val_if_fail (objects != NULL, P11_PARSE_FAILURE);

  ret = p11_persist_read (parser->persist, parser->basename, data, length, objects);

  if (ret) {

    if (!p11_persist_is_generated (data, length))

      modifiablev = CK_FALSE;

    for (i = 0; i < objects->num; i++) {

      attrs = p11_attrs_build (objects->elem[i], &modifiable, NULL);

      sink_object (parser, attrs);

    }

  }

  p11_array_free (objects);

  return ret ? P11_PARSE_SUCCESS : P11_PARSE_UNRECOGNIZED;

}

p11_parser *

p11_parser_new (p11_asn1_cache *asn1_cache)

{

  p11_parser parser = { 0, };

  if (asn1_cache == NULL) {

    parser.asn1_owned = true;

    parser.asn1_defs = p11_asn1_defs_load ();

  } else {

    parser.asn1_defs = p11_asn1_cache_defs (asn1_cache);

    parser.asn1_cache = asn1_cache;

    parser.asn1_owned = false;

  }

  parser.parsed = p11_array_new (p11_attrs_free);

  return_val_if_fail (parser.parsed != NULL, NULL);

  return memdup (&parser, sizeof (parser));

}

void

p11_parser_free (p11_parser *parser)

{

  return_if_fail (parser != NULL);

  p11_persist_free (parser->persist);

  p11_array_free (parser->parsed);

  p11_array_free (parser->formats);

  if (parser->asn1_owned)

    p11_dict_free (parser->asn1_defs);

  free (parser);

}

p11_array *

p11_parser_parsed (p11_parser *parser)

{

  return_val_if_fail (parser != NULL, NULL);

  return parser->parsed;

}

void

p11_parser_formats (p11_parser *parser,

                    ...)

{

  p11_array *formats;

  parser_func func;

  va_list va;

  formats = p11_array_new (NULL);

  return_if_fail (formats != NULL);

  va_start (va, parser);

  for (;;) {

    func = va_arg (va, parser_func);

    if (func == NULL)

      break;

    if (!p11_array_push (formats, func)) {

      va_end (va);

      return_if_reached ();

    }

  }

  va_end (va);

  p11_array_free (parser->formats);

  parser->formats = formats;

}

int

p11_parse_memory (p11_parser *parser,

                  const char *filename,

                  int flags,

                  const unsigned char *data,

                  size_t length)

{

  int ret = P11_PARSE_UNRECOGNIZED;

  char *base;

  int i;

  return_val_if_fail (parser != NULL, P11_PARSE_FAILURE);

  return_val_if_fail (filename != NULL, P11_PARSE_FAILURE);

  return_val_if_fail (parser->formats != NULL, P11_PARSE_FAILURE);

  p11_array_clear (parser->parsed);

  base = p11_path_base (filename);

  parser->basename = base;

  parser->flags = flags;

  for (i = 0; ret == P11_PARSE_UNRECOGNIZED && i < parser->formats->num; i++)

    ret = ((parser_func)parser->formats->elem[i]) (parser, data, length);

  p11_asn1_cache_flush (parser->asn1_cache);

  free (base);

  parser->basename = NULL;

  parser->flags = 0;

  return ret;

}

int

p11_parse_file (p11_parser *parser,

                const char *filename,

                struct stat *sb,

                int flags)

{

  p11_mmap *map;

  void *data;

  size_t size;

  int ret;

  return_val_if_fail (parser != NULL, P11_PARSE_FAILURE);

  return_val_if_fail (filename != NULL, P11_PARSE_FAILURE);

  map = p11_mmap_open (filename, sb, &data, &size);

  if (map == NULL) {

    p11_message_err (errno, _("couldn't open and map file: %s"), filename);

    return P11_PARSE_FAILURE;

  }

  ret = p11_parse_memory (parser, filename, flags, data, size);

  p11_mmap_close (map);

  return ret;

}