/src/p11-kit/common/attrs.c

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/*
 * Copyright (C) 2012, Redhat Inc.
 * Copyright (c) 2011, Collabora Ltd.
 *
 * 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@collabora.co.uk>
 */

#include "config.h"

#include "attrs.h"
#include "buffer.h"
#include "compat.h"
#include "constants.h"
#include "debug.h"
#include "hash.h"
#include "pkcs11.h"
#include "pkcs11i.h"
#include "pkcs11x.h"

#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#define ELEMS(x) (sizeof (x) / sizeof (x[0]))

bool
p11_attrs_terminator (const CK_ATTRIBUTE *attrs)
{
  return (attrs == NULL || attrs->type == CKA_INVALID);
}

CK_ULONG
p11_attrs_count (const CK_ATTRIBUTE *attrs)
{
  CK_ULONG count;

  if (attrs == NULL)
    return 0UL;

  for (count = 0; !p11_attrs_terminator (attrs); count++, attrs++);

  return count;
}

void
p11_attrs_free (void *attrs)
{
  CK_ATTRIBUTE *ats = attrs;
  int i;

  if (!attrs)
    return;

  for (i = 0; !p11_attrs_terminator (ats + i); i++) {
    p11_attr_clear (&ats[i]);
  }
  free (ats);
}

static CK_ATTRIBUTE *
attrs_build (CK_ATTRIBUTE *attrs,
             CK_ULONG count_to_add,
             bool take_values,
             bool override,
             CK_ATTRIBUTE * (*generator) (void *),
             void *state)
{
  CK_ATTRIBUTE *attr;
  CK_ATTRIBUTE *add;
  CK_ULONG current;
  CK_ULONG at;
  CK_ULONG j;
  CK_ULONG i;
  size_t length;
  void *new_memory;

  /* How many attributes we already have */
  current = p11_attrs_count (attrs);

  /* Reallocate for how many we need */
  length = current + count_to_add;
  return_val_if_fail (current <= length && length < SIZE_MAX, NULL);
  new_memory = reallocarray (attrs, length + 1, sizeof (CK_ATTRIBUTE));
  return_val_if_fail (new_memory != NULL, NULL);
  attrs = new_memory;

  at = current;
  for (i = 0; i < count_to_add; i++) {
    add = (generator) (state);

    /* Skip with invalid type */
    if (!add || add->type == CKA_INVALID)
      continue;

    attr = NULL;

    /* Do we have this attribute? */
    for (j = 0; attr == NULL && j < current; j++) {
      if (attrs[j].type == add->type) {
        attr = attrs + j;
        break;
      }
    }

    /* The attribute doesn't exist */
    if (attr == NULL) {
      attr = attrs + at;
      at++;

    /* The attribute exists and we're not overriding */
    } else if (!override) {
      if (take_values)
        free (add->pValue);
      continue;

    /* The attribute exists but we're overriding */
    } else {
      free (attr->pValue);
    }

    if (take_values) {
      memcpy (attr, add, sizeof (CK_ATTRIBUTE));
    } else {
      if (!p11_attr_copy (attr, add)) {
        return_val_if_reached (NULL);
      }
    }
  }

  /* Mark this as the end */
  (attrs + at)->type = CKA_INVALID;
  assert (p11_attrs_terminator (attrs + at));
  return attrs;
}

static CK_ATTRIBUTE *
vararg_generator (void *state)
{
  va_list *va = state;
  return va_arg (*va, CK_ATTRIBUTE *);
}

CK_ATTRIBUTE *
p11_attrs_build (CK_ATTRIBUTE *attrs,
                 ...)
{
  CK_ULONG count;
  va_list va;

  count = 0UL;
  va_start (va, attrs);
  while (va_arg (va, CK_ATTRIBUTE *))
    count++;
  va_end (va);

  va_start (va, attrs);
  attrs = attrs_build (attrs, count, false, true,
                       vararg_generator, &va);
  va_end (va);

  return attrs;
}

static CK_ATTRIBUTE *
template_generator (void *state)
{
  CK_ATTRIBUTE **template = state;
  return (*template)++;
}

CK_ATTRIBUTE *
p11_attrs_buildn (CK_ATTRIBUTE *attrs,
                  const CK_ATTRIBUTE *add,
                  CK_ULONG count)
{
  return attrs_build (attrs, count, false, true,
                      template_generator, &add);
}

CK_ATTRIBUTE *
p11_attrs_take (CK_ATTRIBUTE *attrs,
                CK_ATTRIBUTE_TYPE type,
                CK_VOID_PTR value,
                CK_ULONG length)
{
  CK_ATTRIBUTE attr = { type, value, length };
  CK_ATTRIBUTE *add = &attr;
  return attrs_build (attrs, 1, true, true,
                      template_generator, &add);
}

CK_ATTRIBUTE *
p11_attrs_merge (CK_ATTRIBUTE *attrs,
                 CK_ATTRIBUTE *merge,
                 bool replace)
{
  CK_ATTRIBUTE *ptr;
  CK_ULONG count;

  if (attrs == NULL)
    return merge;

  ptr = merge;
  count = p11_attrs_count (merge);

  attrs = attrs_build (attrs, count, true, replace,
                       template_generator, &ptr);

  /*
   * Since we're supposed to own the merge attributes,
   * free the container array.
   */
  free (merge);

  return attrs;
}

CK_ATTRIBUTE *
p11_attrs_dup (const CK_ATTRIBUTE *attrs)
{
  CK_ULONG count;

  count = p11_attrs_count (attrs);
  return p11_attrs_buildn (NULL, attrs, count);
}

CK_ATTRIBUTE *
p11_attrs_find (CK_ATTRIBUTE *attrs,
                CK_ATTRIBUTE_TYPE type)
{
  CK_ULONG i;

  for (i = 0; !p11_attrs_terminator (attrs + i); i++) {
    if (attrs[i].type == type)
      return attrs + i;
  }

  return NULL;
}

CK_ATTRIBUTE *
p11_attrs_findn (CK_ATTRIBUTE *attrs,
                 CK_ULONG count,
                 CK_ATTRIBUTE_TYPE type)
{
  CK_ULONG i;

  for (i = 0; i < count; i++) {
    if (attrs[i].type == type)
      return attrs + i;
  }

  return NULL;
}

bool
p11_attrs_find_bool (const CK_ATTRIBUTE *attrs,
                     CK_ATTRIBUTE_TYPE type,
                     CK_BBOOL *value)
{
  CK_ULONG i;

  for (i = 0; !p11_attrs_terminator (attrs + i); i++) {
    if (attrs[i].type == type &&
        attrs[i].ulValueLen == sizeof (CK_BBOOL) &&
        attrs[i].pValue != NULL) {
      *value = *((CK_BBOOL *)attrs[i].pValue);
      return true;
    }
  }

  return false;
}

bool
p11_attrs_findn_bool (const CK_ATTRIBUTE *attrs,
                      CK_ULONG count,
                      CK_ATTRIBUTE_TYPE type,
                      CK_BBOOL *value)
{
  CK_ULONG i;

  for (i = 0; i < count; i++) {
    if (attrs[i].type == type &&
        attrs[i].ulValueLen == sizeof (CK_BBOOL) &&
        attrs[i].pValue != NULL) {
      *value = *((CK_BBOOL *)attrs[i].pValue);
      return true;
    }
  }

  return false;
}

bool
p11_attrs_find_ulong (const CK_ATTRIBUTE *attrs,
                      CK_ATTRIBUTE_TYPE type,
                      CK_ULONG *value)
{
  CK_ULONG i;

  for (i = 0; !p11_attrs_terminator (attrs + i); i++) {
    if (attrs[i].type == type &&
        attrs[i].ulValueLen == sizeof (CK_ULONG) &&
        attrs[i].pValue != NULL) {
      *value = *((CK_ULONG *)attrs[i].pValue);
      return true;
    }
  }

  return false;
}

bool
p11_attrs_findn_ulong (const CK_ATTRIBUTE *attrs,
                       CK_ULONG count,
                       CK_ATTRIBUTE_TYPE type,
                       CK_ULONG *value)
{
  CK_ULONG i;

  for (i = 0; i < count; i++) {
    if (attrs[i].type == type &&
        attrs[i].ulValueLen == sizeof (CK_ULONG) &&
        attrs[i].pValue != NULL) {
      *value = *((CK_ULONG *)attrs[i].pValue);
      return true;
    }
  }

  return false;
}

void *
p11_attrs_find_value (CK_ATTRIBUTE *attrs,
                      CK_ATTRIBUTE_TYPE type,
                      size_t *length)
{
  CK_ULONG i;

  for (i = 0; !p11_attrs_terminator (attrs + i); i++) {
    if (attrs[i].type == type &&
        attrs[i].ulValueLen != 0 &&
        attrs[i].ulValueLen != (CK_ULONG)-1 &&
        attrs[i].pValue != NULL) {
      if (length)
        *length = attrs[i].ulValueLen;
      return attrs[i].pValue;
    }
  }

  return NULL;
}

CK_ATTRIBUTE *
p11_attrs_find_valid (CK_ATTRIBUTE *attrs,
                      CK_ATTRIBUTE_TYPE type)
{
  CK_ULONG i;

  for (i = 0; !p11_attrs_terminator (attrs + i); i++) {
    if (attrs[i].type == type &&
        attrs[i].pValue != NULL &&
        attrs[i].ulValueLen != 0 &&
        attrs[i].ulValueLen != (CK_ULONG)-1)
      return attrs + i;
  }

  return NULL;
}

bool
p11_attrs_remove (CK_ATTRIBUTE *attrs,
                  CK_ATTRIBUTE_TYPE type)
{
  CK_ULONG count;
  CK_ULONG i;

  count = p11_attrs_count (attrs);
  for (i = 0; i < count; i++) {
    if (attrs[i].type == type)
      break;
  }

  if (i == count)
    return false;

  if (attrs[i].pValue) {
    p11_attr_clear (&attrs[i]);
  }

  memmove (attrs + i, attrs + i + 1, (count - (i + 1)) * sizeof (CK_ATTRIBUTE));
  attrs[count - 1].type = CKA_INVALID;
  return true;
}

void
p11_attrs_purge (CK_ATTRIBUTE *attrs)
{
  int in, out;

  for (in = 0, out = 0; !p11_attrs_terminator (attrs + in); in++) {
    if (attrs[in].ulValueLen == (CK_ULONG)-1) {
      free (attrs[in].pValue);
      attrs[in].pValue = NULL;
      attrs[in].ulValueLen = 0;
    } else {
      if (in != out)
        memcpy (attrs + out, attrs + in, sizeof (CK_ATTRIBUTE));
      out++;
    }
  }

  attrs[out].type = CKA_INVALID;
  assert (p11_attrs_terminator (attrs + out));

}

bool
p11_attrs_match (const CK_ATTRIBUTE *attrs,
                 const CK_ATTRIBUTE *match)
{
  CK_ATTRIBUTE *attr;

  for (; !p11_attrs_terminator (match); match++) {
    attr = p11_attrs_find ((CK_ATTRIBUTE *)attrs, match->type);
    if (!attr)
      return false;
    if (!p11_attr_equal (attr, match))
      return false;
  }

  return true;
}

bool
p11_attrs_matchn (const CK_ATTRIBUTE *attrs,
                  const CK_ATTRIBUTE *match,
                  CK_ULONG count)
{
  CK_ATTRIBUTE *attr;
  CK_ULONG i;

  for (i = 0; i < count; i++) {
    attr = p11_attrs_find ((CK_ATTRIBUTE *)attrs, match[i].type);
    if (!attr)
      return false;
    if (!p11_attr_equal (attr, match + i))
      return false;
  }

  return true;

}


bool
p11_attr_match_value (const CK_ATTRIBUTE *attr,
                      const void *value,
                      ssize_t length)
{
  if (length < 0)
    length = strlen (value);
  return (attr != NULL &&
          attr->ulValueLen == length &&
          (attr->pValue == value ||
           (attr->pValue && value &&
            memcmp (attr->pValue, value, attr->ulValueLen) == 0)));
}

bool
p11_attr_equal (const void *v1,
                const void *v2)
{
  const CK_ATTRIBUTE *one = v1;
  const CK_ATTRIBUTE *two = v2;

  return (one == two ||
    (one && two && one->type == two->type &&
     p11_attr_match_value (one, two->pValue, two->ulValueLen)));
}

unsigned int
p11_attr_hash (const void *data)
{
  const CK_ATTRIBUTE *attr = data;
  uint32_t hash = 0;

  if (attr != NULL) {
    p11_hash_murmur3 (&hash,
                      &attr->type, sizeof (attr->type),
                      attr->pValue, (size_t)attr->ulValueLen,
                      NULL);
  }

  return hash;
}

bool
p11_attr_copy (CK_ATTRIBUTE *dst, const CK_ATTRIBUTE *src)
{
  memcpy (dst, src, sizeof (CK_ATTRIBUTE));

  if (!src->pValue) {
    return true;
  }

  if (src->ulValueLen == 0) {
    dst->pValue = malloc (1);
  } else {
    dst->pValue = malloc (src->ulValueLen);
  }
  if (!dst->pValue) {
    return_val_if_reached (false);
  }

  assert (dst->ulValueLen >= src->ulValueLen);

  if (!IS_ATTRIBUTE_ARRAY (src)) {
    memcpy (dst->pValue, src->pValue, src->ulValueLen);
  } else {
    CK_ATTRIBUTE *child_dst;
    const CK_ATTRIBUTE *child_src;
    size_t i;

    for (i = 0, child_dst = dst->pValue, child_src = src->pValue;
         i < src->ulValueLen / sizeof (CK_ATTRIBUTE);
         i++, child_dst++, child_src++) {
      if (!p11_attr_copy (child_dst, child_src)) {
        return_val_if_reached (false);
      }
    }
  }

  return true;
}

void
p11_attr_clear (CK_ATTRIBUTE *attr)
{
  if (IS_ATTRIBUTE_ARRAY (attr) && attr->pValue) {
    CK_ATTRIBUTE *child;
    size_t i;

    for (i = 0, child = attr->pValue;
         i < attr->ulValueLen / sizeof (CK_ATTRIBUTE);
         i++, child++) {
      p11_attr_clear (child);
    }
  }
  free (attr->pValue);
}

static void
buffer_append_printf (p11_buffer *buffer,
                      const char *format,
                      ...) GNUC_PRINTF(2, 3);

static void
buffer_append_printf (p11_buffer *buffer,
                      const char *format,
                      ...)
{
  char *string;
  va_list va;

  va_start (va, format);
  if (vasprintf (&string, format, va) < 0) {
    va_end (va);
    return_if_reached ();
  }
  va_end (va);

  p11_buffer_add (buffer, string, -1);
  free (string);
}

static bool
attribute_is_ulong_of_type (const CK_ATTRIBUTE *attr,
                            CK_ULONG type)
{
  if (attr->type != type)
    return false;
  if (attr->ulValueLen != sizeof (CK_ULONG))
    return false;
  if (!attr->pValue)
    return false;
  return true;
}

static bool
attribute_is_trust_value (const CK_ATTRIBUTE *attr)
{
  switch (attr->type) {
  case CKA_TRUST_DIGITAL_SIGNATURE:
  case CKA_TRUST_NON_REPUDIATION:
  case CKA_TRUST_KEY_ENCIPHERMENT:
  case CKA_TRUST_DATA_ENCIPHERMENT:
  case CKA_TRUST_KEY_AGREEMENT:
  case CKA_TRUST_KEY_CERT_SIGN:
  case CKA_TRUST_CRL_SIGN:
  case CKA_TRUST_SERVER_AUTH:
  case CKA_TRUST_CLIENT_AUTH:
  case CKA_TRUST_CODE_SIGNING:
  case CKA_TRUST_EMAIL_PROTECTION:
  case CKA_TRUST_IPSEC_END_SYSTEM:
  case CKA_TRUST_IPSEC_TUNNEL:
  case CKA_TRUST_IPSEC_USER:
  case CKA_TRUST_TIME_STAMPING:
    break;
  default:
    return false;
  }

  return attribute_is_ulong_of_type (attr, attr->type);
}

static bool
attribute_is_sensitive (const CK_ATTRIBUTE *attr,
                        CK_OBJECT_CLASS klass)
{
  /*
   * Don't print any just attribute, since they may contain
   * sensitive data
   */

  switch (attr->type) {
  #define X(x) case x: return false;
  X (CKA_CLASS)
  X (CKA_TOKEN)
  X (CKA_PRIVATE)
  X (CKA_LABEL)
  X (CKA_APPLICATION)
  X (CKA_OBJECT_ID)
  X (CKA_CERTIFICATE_TYPE)
  X (CKA_ISSUER)
  X (CKA_SERIAL_NUMBER)
  X (CKA_AC_ISSUER)
  X (CKA_OWNER)
  X (CKA_ATTR_TYPES)
  X (CKA_TRUSTED)
  X (CKA_CERTIFICATE_CATEGORY)
  X (CKA_JAVA_MIDP_SECURITY_DOMAIN)
  X (CKA_URL)
  X (CKA_HASH_OF_SUBJECT_PUBLIC_KEY)
  X (CKA_HASH_OF_ISSUER_PUBLIC_KEY)
  X (CKA_CHECK_VALUE)
  X (CKA_KEY_TYPE)
  X (CKA_SUBJECT)
  X (CKA_ID)
  X (CKA_SENSITIVE)
  X (CKA_ENCRYPT)
  X (CKA_DECRYPT)
  X (CKA_WRAP)
  X (CKA_UNWRAP)
  X (CKA_SIGN)
  X (CKA_SIGN_RECOVER)
  X (CKA_VERIFY)
  X (CKA_VERIFY_RECOVER)
  X (CKA_DERIVE)
  X (CKA_START_DATE)
  X (CKA_END_DATE)
  X (CKA_MODULUS_BITS)
  X (CKA_PRIME_BITS)
  /* X (CKA_SUBPRIME_BITS) */
  /* X (CKA_SUB_PRIME_BITS) */
  X (CKA_VALUE_BITS)
  X (CKA_VALUE_LEN)
  X (CKA_EXTRACTABLE)
  X (CKA_LOCAL)
  X (CKA_NEVER_EXTRACTABLE)
  X (CKA_ALWAYS_SENSITIVE)
  X (CKA_KEY_GEN_MECHANISM)
  X (CKA_MODIFIABLE)
  X (CKA_SECONDARY_AUTH)
  X (CKA_AUTH_PIN_FLAGS)
  X (CKA_ALWAYS_AUTHENTICATE)
  X (CKA_WRAP_WITH_TRUSTED)
  X (CKA_WRAP_TEMPLATE)
  X (CKA_UNWRAP_TEMPLATE)
  X (CKA_HW_FEATURE_TYPE)
  X (CKA_RESET_ON_INIT)
  X (CKA_HAS_RESET)
  X (CKA_PIXEL_X)
  X (CKA_PIXEL_Y)
  X (CKA_RESOLUTION)
  X (CKA_CHAR_ROWS)
  X (CKA_CHAR_COLUMNS)
  X (CKA_COLOR)
  X (CKA_BITS_PER_PIXEL)
  X (CKA_CHAR_SETS)
  X (CKA_ENCODING_METHODS)
  X (CKA_MIME_TYPES)
  X (CKA_MECHANISM_TYPE)
  X (CKA_REQUIRED_CMS_ATTRIBUTES)
  X (CKA_DEFAULT_CMS_ATTRIBUTES)
  X (CKA_SUPPORTED_CMS_ATTRIBUTES)
  X (CKA_ALLOWED_MECHANISMS)
  X (CKA_X_ASSERTION_TYPE)
  X (CKA_X_CERTIFICATE_VALUE)
  X (CKA_X_PURPOSE)
  X (CKA_X_PEER)
  X (CKA_X_DISTRUSTED)
  X (CKA_X_CRITICAL)
  X (CKA_PUBLIC_KEY_INFO)
  X (CKA_NSS_URL)
  X (CKA_NSS_EMAIL)
  X (CKA_NSS_SMIME_INFO)
  X (CKA_NSS_SMIME_TIMESTAMP)
  X (CKA_NSS_PKCS8_SALT)
  X (CKA_NSS_PASSWORD_CHECK)
  X (CKA_NSS_EXPIRES)
  X (CKA_NSS_KRL)
  X (CKA_NSS_PQG_COUNTER)
  X (CKA_NSS_PQG_SEED)
  X (CKA_NSS_PQG_H)
  X (CKA_NSS_PQG_SEED_BITS)
  X (CKA_NSS_MODULE_SPEC)
  X (CKA_TRUST_DIGITAL_SIGNATURE)
  X (CKA_TRUST_NON_REPUDIATION)
  X (CKA_TRUST_KEY_ENCIPHERMENT)
  X (CKA_TRUST_DATA_ENCIPHERMENT)
  X (CKA_TRUST_KEY_AGREEMENT)
  X (CKA_TRUST_KEY_CERT_SIGN)
  X (CKA_TRUST_CRL_SIGN)
  X (CKA_TRUST_SERVER_AUTH)
  X (CKA_TRUST_CLIENT_AUTH)
  X (CKA_TRUST_CODE_SIGNING)
  X (CKA_TRUST_EMAIL_PROTECTION)
  X (CKA_TRUST_IPSEC_END_SYSTEM)
  X (CKA_TRUST_IPSEC_TUNNEL)
  X (CKA_TRUST_IPSEC_USER)
  X (CKA_TRUST_TIME_STAMPING)
  X (CKA_TRUST_STEP_UP_APPROVED)
  X (CKA_CERT_SHA1_HASH)
  X (CKA_CERT_MD5_HASH)
  X (CKA_IBM_OPAQUE)
  X (CKA_IBM_RESTRICTABLE)
  X (CKA_IBM_NEVER_MODIFIABLE)
  X (CKA_IBM_RETAINKEY)
  X (CKA_IBM_ATTRBOUND)
  X (CKA_IBM_KEYTYPE)
  X (CKA_IBM_CV)
  X (CKA_IBM_MACKEY)
  X (CKA_IBM_USE_AS_DATA)
  X (CKA_IBM_STRUCT_PARAMS)
  X (CKA_IBM_STD_COMPLIANCE1)
  X (CKA_IBM_PROTKEY_EXTRACTABLE)
  X (CKA_IBM_PROTKEY_NEVER_EXTRACTABLE)
  X (CKA_IBM_OPAQUE_PKEY)
  X (CKA_IBM_DILITHIUM_KEYFORM)
  X (CKA_IBM_DILITHIUM_RHO)
  X (CKA_IBM_DILITHIUM_T1)
  case CKA_VALUE:
    return (klass != CKO_CERTIFICATE &&
      klass != CKO_X_CERTIFICATE_EXTENSION);
  #undef X
  }

  return true;
}

static void
format_class (p11_buffer *buffer,
              CK_OBJECT_CLASS klass)
{
  const char *string = p11_constant_name (p11_constant_classes, klass);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "0x%08lX", klass);
}

static void
format_assertion_type (p11_buffer *buffer,
                       CK_X_ASSERTION_TYPE type)
{
  const char *string = p11_constant_name (p11_constant_asserts, type);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "0x%08lX", type);
}

static void
format_key_type (p11_buffer *buffer,
                 CK_KEY_TYPE type)
{
  const char *string = p11_constant_name (p11_constant_keys, type);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "0x%08lX", type);
}

static void
format_certificate_type (p11_buffer *buffer,
                         CK_CERTIFICATE_TYPE type)
{
  const char *string = p11_constant_name (p11_constant_certs, type);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "0x%08lX", type);
}

static void
format_trust_value (p11_buffer *buffer,
                    CK_TRUST trust)
{
  const char *string = p11_constant_name (p11_constant_trusts, trust);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "0x%08lX", trust);
}

static void
format_certificate_category (p11_buffer *buffer,
                             CK_ULONG category)
{
  const char *string = p11_constant_name (p11_constant_categories, category);
  if (string != NULL)
    buffer_append_printf (buffer, "%lu (%s)", category, string);
  else
    buffer_append_printf (buffer, "%lu", category);
}

static void
format_attribute_type (p11_buffer *buffer,
                       CK_ULONG type)
{
  const char *string = p11_constant_name (p11_constant_types, type);
  if (string != NULL)
    p11_buffer_add (buffer, string, -1);
  else
    buffer_append_printf (buffer, "CKA_0x%08lX", type);
}

static void
format_some_bytes (p11_buffer *buffer,
                   void *bytes,
                   CK_ULONG length)
{
  unsigned char ch;
  const unsigned char *data = bytes;
  CK_ULONG i;

  if (bytes == NULL) {
    p11_buffer_add (buffer, "NULL", -1);
    return;
  }

  p11_buffer_add (buffer, "\"", 1);
  for (i = 0; i < length && i < 128; i++) {
    ch = data[i];
    if (ch == '\t')
      p11_buffer_add (buffer, "\\t", -1);
    else if (ch == '\n')
      p11_buffer_add (buffer, "\\n", -1);
    else if (ch == '\r')
      p11_buffer_add (buffer, "\\r", -1);
    else if (ch >= 32 && ch < 127)
      p11_buffer_add (buffer, &ch, 1);
    else
      buffer_append_printf (buffer, "\\x%02x", ch);
  }

  if (i < length)
    buffer_append_printf (buffer, "...");
  p11_buffer_add (buffer, "\"", 1);
}

void
p11_attr_format (p11_buffer *buffer,
                 const CK_ATTRIBUTE *attr,
                 CK_OBJECT_CLASS klass)
{
  p11_buffer_add (buffer, "{ ", -1);
  format_attribute_type (buffer, attr->type);
  p11_buffer_add (buffer, " = ", -1);
  if (attr->ulValueLen == CKA_INVALID) {
    buffer_append_printf (buffer, "(-1) INVALID");
  } else if (attribute_is_ulong_of_type (attr, CKA_CLASS)) {
    format_class (buffer, *((CK_OBJECT_CLASS *)attr->pValue));
  } else if (attribute_is_ulong_of_type (attr, CKA_X_ASSERTION_TYPE)) {
    format_assertion_type (buffer, *((CK_X_ASSERTION_TYPE *)attr->pValue));
  } else if (attribute_is_ulong_of_type (attr, CKA_CERTIFICATE_TYPE)) {
    format_certificate_type (buffer, *((CK_CERTIFICATE_TYPE *)attr->pValue));
  } else if (attribute_is_ulong_of_type (attr, CKA_CERTIFICATE_CATEGORY)) {
    format_certificate_category (buffer, *((CK_ULONG *)attr->pValue));
  } else if (attribute_is_ulong_of_type (attr, CKA_KEY_TYPE)) {
    format_key_type (buffer, *((CK_KEY_TYPE *)attr->pValue));
  } else if (attribute_is_trust_value (attr)) {
    format_trust_value (buffer, *((CK_TRUST *)attr->pValue));
  } else if (attribute_is_sensitive (attr, klass)) {
    buffer_append_printf (buffer, "(%lu) NOT-PRINTED", attr->ulValueLen);
  } else {
    buffer_append_printf (buffer, "(%lu) ", attr->ulValueLen);
    format_some_bytes (buffer, attr->pValue, attr->ulValueLen);
  }
  p11_buffer_add (buffer, " }", -1);
}

void
p11_attrs_format (p11_buffer *buffer,
                  const CK_ATTRIBUTE *attrs,
                  int count)
{
  CK_BBOOL first = CK_TRUE;
  CK_OBJECT_CLASS klass;
  int i;

  if (count < 0)
    count = p11_attrs_count (attrs);

  if (!p11_attrs_findn_ulong (attrs, CKA_CLASS, count, &klass))
    klass = CKA_INVALID;

  buffer_append_printf (buffer, "(%d) [", count);
  for (i = 0; i < count; i++) {
    if (first)
      p11_buffer_add (buffer, " ", 1);
    else
      p11_buffer_add (buffer, ", ", 2);
    first = CK_FALSE;
    p11_attr_format (buffer, attrs + i, klass);
  }
  p11_buffer_add (buffer, " ]", -1);
}

char *
p11_attrs_to_string (const CK_ATTRIBUTE *attrs,
                     int count)
{
  p11_buffer buffer;
  if (!p11_buffer_init_null (&buffer, 128))
    return_val_if_reached (NULL);
  p11_attrs_format (&buffer, attrs, count);
  return p11_buffer_steal (&buffer, NULL);
}

char *
p11_attr_to_string (const CK_ATTRIBUTE *attr,
                    CK_OBJECT_CLASS klass)
{
  p11_buffer buffer;
  if (!p11_buffer_init_null (&buffer, 32))
    return_val_if_reached (NULL);
  p11_attr_format (&buffer, attr, klass);
  return p11_buffer_steal (&buffer, NULL);
}

Coverage Report

Created: 2023-08-07 06:59