svn merge ^/branches/released .

1 files changed, 843 insertions, 844 deletions

diff --git a/openssl/crypto/x509v3/v3_asid.c b/openssl/crypto/x509v3/v3_asid.c
index 56702f86b..fb7bc147c 100644
--- a/openssl/crypto/x509v3/v3_asid.c
+++ b/openssl/crypto/x509v3/v3_asid.c
@@ -1,844 +1,843 @@
-/*
- * Contributed to the OpenSSL Project by the American Registry for
- * Internet Numbers ("ARIN").
- */
-/* ====================================================================
- * Copyright (c) 2006 The OpenSSL Project.  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.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- */
-
-/*
- * Implementation of RFC 3779 section 3.2.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <assert.h>
-#include "cryptlib.h"
-#include <openssl/conf.h>
-#include <openssl/asn1.h>
-#include <openssl/asn1t.h>
-#include <openssl/x509v3.h>
-#include <openssl/x509.h>
-#include <openssl/bn.h>
-
-#ifndef OPENSSL_NO_RFC3779
-
-/*
- * OpenSSL ASN.1 template translation of RFC 3779 3.2.3.
- */
-
-ASN1_SEQUENCE(ASRange) = {
-  ASN1_SIMPLE(ASRange, min, ASN1_INTEGER),
-  ASN1_SIMPLE(ASRange, max, ASN1_INTEGER)
-} ASN1_SEQUENCE_END(ASRange)
-
-ASN1_CHOICE(ASIdOrRange) = {
-  ASN1_SIMPLE(ASIdOrRange, u.id,    ASN1_INTEGER),
-  ASN1_SIMPLE(ASIdOrRange, u.range, ASRange)
-} ASN1_CHOICE_END(ASIdOrRange)
-
-ASN1_CHOICE(ASIdentifierChoice) = {
-  ASN1_SIMPLE(ASIdentifierChoice,      u.inherit,       ASN1_NULL),
-  ASN1_SEQUENCE_OF(ASIdentifierChoice, u.asIdsOrRanges, ASIdOrRange)
-} ASN1_CHOICE_END(ASIdentifierChoice)
-
-ASN1_SEQUENCE(ASIdentifiers) = {
-  ASN1_EXP_OPT(ASIdentifiers, asnum, ASIdentifierChoice, 0),
-  ASN1_EXP_OPT(ASIdentifiers, rdi,   ASIdentifierChoice, 1)
-} ASN1_SEQUENCE_END(ASIdentifiers)
-
-IMPLEMENT_ASN1_FUNCTIONS(ASRange)
-IMPLEMENT_ASN1_FUNCTIONS(ASIdOrRange)
-IMPLEMENT_ASN1_FUNCTIONS(ASIdentifierChoice)
-IMPLEMENT_ASN1_FUNCTIONS(ASIdentifiers)
-
-/*
- * i2r method for an ASIdentifierChoice.
- */
-static int i2r_ASIdentifierChoice(BIO *out,
-				  ASIdentifierChoice *choice,
-				  int indent,
-				  const char *msg)
-{
-  int i;
-  char *s;
-  if (choice == NULL)
-    return 1;
-  BIO_printf(out, "%*s%s:\n", indent, "", msg);
-  switch (choice->type) {
-  case ASIdentifierChoice_inherit:
-    BIO_printf(out, "%*sinherit\n", indent + 2, "");
-    break;
-  case ASIdentifierChoice_asIdsOrRanges:
-    for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges); i++) {
-      ASIdOrRange *aor = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);
-      switch (aor->type) {
-      case ASIdOrRange_id:
-	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.id)) == NULL)
-	  return 0;
-	BIO_printf(out, "%*s%s\n", indent + 2, "", s);
-	OPENSSL_free(s);
-	break;
-      case ASIdOrRange_range:
-	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->min)) == NULL)
-	  return 0;
-	BIO_printf(out, "%*s%s-", indent + 2, "", s);
-	OPENSSL_free(s);
-	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->max)) == NULL)
-	  return 0;
-	BIO_printf(out, "%s\n", s);
-	OPENSSL_free(s);
-	break;
-      default:
-	return 0;
-      }
-    }
-    break;
-  default:
-    return 0;
-  }
-  return 1;
-}
-
-/*
- * i2r method for an ASIdentifier extension.
- */
-static int i2r_ASIdentifiers(const X509V3_EXT_METHOD *method,
-			     void *ext,
-			     BIO *out,
-			     int indent)
-{
-  ASIdentifiers *asid = ext;
-  return (i2r_ASIdentifierChoice(out, asid->asnum, indent,
-				 "Autonomous System Numbers") &&
-	  i2r_ASIdentifierChoice(out, asid->rdi, indent,
-				 "Routing Domain Identifiers"));
-}
-
-/*
- * Sort comparision function for a sequence of ASIdOrRange elements.
- */
-static int ASIdOrRange_cmp(const ASIdOrRange * const *a_,
-			   const ASIdOrRange * const *b_)
-{
-  const ASIdOrRange *a = *a_, *b = *b_;
-
-  assert((a->type == ASIdOrRange_id && a->u.id != NULL) ||
-	 (a->type == ASIdOrRange_range && a->u.range != NULL &&
-	  a->u.range->min != NULL && a->u.range->max != NULL));
-
-  assert((b->type == ASIdOrRange_id && b->u.id != NULL) ||
-	 (b->type == ASIdOrRange_range && b->u.range != NULL &&
-	  b->u.range->min != NULL && b->u.range->max != NULL));
-
-  if (a->type == ASIdOrRange_id && b->type == ASIdOrRange_id)
-    return ASN1_INTEGER_cmp(a->u.id, b->u.id);
-
-  if (a->type == ASIdOrRange_range && b->type == ASIdOrRange_range) {
-    int r = ASN1_INTEGER_cmp(a->u.range->min, b->u.range->min);
-    return r != 0 ? r : ASN1_INTEGER_cmp(a->u.range->max, b->u.range->max);
-  }
-
-  if (a->type == ASIdOrRange_id)
-    return ASN1_INTEGER_cmp(a->u.id, b->u.range->min);
-  else
-    return ASN1_INTEGER_cmp(a->u.range->min, b->u.id);
-}
-
-/*
- * Add an inherit element.
- */
-int v3_asid_add_inherit(ASIdentifiers *asid, int which)
-{
-  ASIdentifierChoice **choice;
-  if (asid == NULL)
-    return 0;
-  switch (which) {
-  case V3_ASID_ASNUM:
-    choice = &asid->asnum;
-    break;
-  case V3_ASID_RDI:
-    choice = &asid->rdi;
-    break;
-  default:
-    return 0;
-  }
-  if (*choice == NULL) {
-    if ((*choice = ASIdentifierChoice_new()) == NULL)
-      return 0;
-    assert((*choice)->u.inherit == NULL);
-    if (((*choice)->u.inherit = ASN1_NULL_new()) == NULL)
-      return 0;
-    (*choice)->type = ASIdentifierChoice_inherit;
-  }
-  return (*choice)->type == ASIdentifierChoice_inherit;
-}
-
-/*
- * Add an ID or range to an ASIdentifierChoice.
- */
-int v3_asid_add_id_or_range(ASIdentifiers *asid,
-			    int which,
-			    ASN1_INTEGER *min,
-			    ASN1_INTEGER *max)
-{
-  ASIdentifierChoice **choice;
-  ASIdOrRange *aor;
-  if (asid == NULL)
-    return 0;
-  switch (which) {
-  case V3_ASID_ASNUM:
-    choice = &asid->asnum;
-    break;
-  case V3_ASID_RDI:
-    choice = &asid->rdi;
-    break;
-  default:
-    return 0;
-  }
-  if (*choice != NULL && (*choice)->type == ASIdentifierChoice_inherit)
-    return 0;
-  if (*choice == NULL) {
-    if ((*choice = ASIdentifierChoice_new()) == NULL)
-      return 0;
-    assert((*choice)->u.asIdsOrRanges == NULL);
-    (*choice)->u.asIdsOrRanges = sk_ASIdOrRange_new(ASIdOrRange_cmp);
-    if ((*choice)->u.asIdsOrRanges == NULL)
-      return 0;
-    (*choice)->type = ASIdentifierChoice_asIdsOrRanges;
-  }
-  if ((aor = ASIdOrRange_new()) == NULL)
-    return 0;
-  if (max == NULL) {
-    aor->type = ASIdOrRange_id;
-    aor->u.id = min;
-  } else {
-    aor->type = ASIdOrRange_range;
-    if ((aor->u.range = ASRange_new()) == NULL)
-      goto err;
-    ASN1_INTEGER_free(aor->u.range->min);
-    aor->u.range->min = min;
-    ASN1_INTEGER_free(aor->u.range->max);
-    aor->u.range->max = max;
-  }
-  if (!(sk_ASIdOrRange_push((*choice)->u.asIdsOrRanges, aor)))
-    goto err;
-  return 1;
-
- err:
-  ASIdOrRange_free(aor);
-  return 0;
-}
-
-/*
- * Extract min and max values from an ASIdOrRange.
- */
-static void extract_min_max(ASIdOrRange *aor,
-			    ASN1_INTEGER **min,
-			    ASN1_INTEGER **max)
-{
-  assert(aor != NULL && min != NULL && max != NULL);
-  switch (aor->type) {
-  case ASIdOrRange_id:
-    *min = aor->u.id;
-    *max = aor->u.id;
-    return;
-  case ASIdOrRange_range:
-    *min = aor->u.range->min;
-    *max = aor->u.range->max;
-    return;
-  }
-}
-
-/*
- * Check whether an ASIdentifierChoice is in canonical form.
- */
-static int ASIdentifierChoice_is_canonical(ASIdentifierChoice *choice)
-{
-  ASN1_INTEGER *a_max_plus_one = NULL;
-  BIGNUM *bn = NULL;
-  int i, ret = 0;
-
-  /*
-   * Empty element or inheritance is canonical.
-   */
-  if (choice == NULL || choice->type == ASIdentifierChoice_inherit)
-    return 1;
-
-  /*
-   * If not a list, or if empty list, it's broken.
-   */
-  if (choice->type != ASIdentifierChoice_asIdsOrRanges ||
-      sk_ASIdOrRange_num(choice->u.asIdsOrRanges) == 0)
-    return 0;
-
-  /*
-   * It's a list, check it.
-   */
-  for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {
-    ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);
-    ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);
-    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;
-
-    extract_min_max(a, &a_min, &a_max);
-    extract_min_max(b, &b_min, &b_max);
-
-    /*
-     * Punt misordered list, overlapping start, or inverted range.
-     */
-    if (ASN1_INTEGER_cmp(a_min, b_min) >= 0 ||
-	ASN1_INTEGER_cmp(a_min, a_max) > 0 ||
-	ASN1_INTEGER_cmp(b_min, b_max) > 0)
-      goto done;
-
-    /*
-     * Calculate a_max + 1 to check for adjacency.
-     */
-    if ((bn == NULL && (bn = BN_new()) == NULL) ||
-	ASN1_INTEGER_to_BN(a_max, bn) == NULL ||
-	!BN_add_word(bn, 1) ||
-	(a_max_plus_one = BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) {
-      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_IS_CANONICAL,
-		ERR_R_MALLOC_FAILURE);
-      goto done;
-    }
-    
-    /*
-     * Punt if adjacent or overlapping.
-     */
-    if (ASN1_INTEGER_cmp(a_max_plus_one, b_min) >= 0)
-      goto done;
-  }
-
-  ret = 1;
-
- done:
-  ASN1_INTEGER_free(a_max_plus_one);
-  BN_free(bn);
-  return ret;
-}
-
-/*
- * Check whether an ASIdentifier extension is in canonical form.
- */
-int v3_asid_is_canonical(ASIdentifiers *asid)
-{
-  return (asid == NULL ||
-	  (ASIdentifierChoice_is_canonical(asid->asnum) ||
-	   ASIdentifierChoice_is_canonical(asid->rdi)));
-}
-
-/*
- * Whack an ASIdentifierChoice into canonical form.
- */
-static int ASIdentifierChoice_canonize(ASIdentifierChoice *choice)
-{
-  ASN1_INTEGER *a_max_plus_one = NULL;
-  BIGNUM *bn = NULL;
-  int i, ret = 0;
-
-  /*
-   * Nothing to do for empty element or inheritance.
-   */
-  if (choice == NULL || choice->type == ASIdentifierChoice_inherit)
-    return 1;
-
-  /*
-   * We have a list.  Sort it.
-   */
-  assert(choice->type == ASIdentifierChoice_asIdsOrRanges);
-  sk_ASIdOrRange_sort(choice->u.asIdsOrRanges);
-
-  /*
-   * Now check for errors and suboptimal encoding, rejecting the
-   * former and fixing the latter.
-   */
-  for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {
-    ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);
-    ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);
-    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;
-
-    extract_min_max(a, &a_min, &a_max);
-    extract_min_max(b, &b_min, &b_max);
-
-    /*
-     * Make sure we're properly sorted (paranoia).
-     */
-    assert(ASN1_INTEGER_cmp(a_min, b_min) <= 0);
-
-    /*
-     * Check for overlaps.
-     */
-    if (ASN1_INTEGER_cmp(a_max, b_min) >= 0) {
-      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE,
-		X509V3_R_EXTENSION_VALUE_ERROR);
-      goto done;
-    }
-
-    /*
-     * Calculate a_max + 1 to check for adjacency.
-     */
-    if ((bn == NULL && (bn = BN_new()) == NULL) ||
-	ASN1_INTEGER_to_BN(a_max, bn) == NULL ||
-	!BN_add_word(bn, 1) ||
-	(a_max_plus_one = BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) {
-      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE, ERR_R_MALLOC_FAILURE);
-      goto done;
-    }
-    
-    /*
-     * If a and b are adjacent, merge them.
-     */
-    if (ASN1_INTEGER_cmp(a_max_plus_one, b_min) == 0) {
-      ASRange *r;
-      switch (a->type) {
-      case ASIdOrRange_id:
-	if ((r = OPENSSL_malloc(sizeof(ASRange))) == NULL) {
-	  X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE,
-		    ERR_R_MALLOC_FAILURE);
-	  goto done;
-	}
-	r->min = a_min;
-	r->max = b_max;
-	a->type = ASIdOrRange_range;
-	a->u.range = r;
-	break;
-      case ASIdOrRange_range:
-	ASN1_INTEGER_free(a->u.range->max);
-	a->u.range->max = b_max;
-	break;
-      }
-      switch (b->type) {
-      case ASIdOrRange_id:
-	b->u.id = NULL;
-	break;
-      case ASIdOrRange_range:
-	b->u.range->max = NULL;
-	break;
-      }
-      ASIdOrRange_free(b);
-      sk_ASIdOrRange_delete(choice->u.asIdsOrRanges, i + 1);
-      i--;
-      continue;
-    }
-  }
-
-  assert(ASIdentifierChoice_is_canonical(choice)); /* Paranoia */
-
-  ret = 1;
-
- done:
-  ASN1_INTEGER_free(a_max_plus_one);
-  BN_free(bn);
-  return ret;
-}
-
-/*
- * Whack an ASIdentifier extension into canonical form.
- */
-int v3_asid_canonize(ASIdentifiers *asid)
-{
-  return (asid == NULL ||
-	  (ASIdentifierChoice_canonize(asid->asnum) &&
-	   ASIdentifierChoice_canonize(asid->rdi)));
-}
-
-/*
- * v2i method for an ASIdentifier extension.
- */
-static void *v2i_ASIdentifiers(const struct v3_ext_method *method,
-			       struct v3_ext_ctx *ctx,
-			       STACK_OF(CONF_VALUE) *values)
-{
-  ASIdentifiers *asid = NULL;
-  int i;
-
-  if ((asid = ASIdentifiers_new()) == NULL) {
-    X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);
-    return NULL;
-  }
-
-  for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
-    CONF_VALUE *val = sk_CONF_VALUE_value(values, i);
-    ASN1_INTEGER *min = NULL, *max = NULL;
-    int i1, i2, i3, is_range, which;
-
-    /*
-     * Figure out whether this is an AS or an RDI.
-     */
-    if (       !name_cmp(val->name, "AS")) {
-      which = V3_ASID_ASNUM;
-    } else if (!name_cmp(val->name, "RDI")) {
-      which = V3_ASID_RDI;
-    } else {
-      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_EXTENSION_NAME_ERROR);
-      X509V3_conf_err(val);
-      goto err;
-    }
-
-    /*
-     * Handle inheritance.
-     */
-    if (!strcmp(val->value, "inherit")) {
-      if (v3_asid_add_inherit(asid, which))
-	continue;
-      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_INHERITANCE);
-      X509V3_conf_err(val);
-      goto err;
-    }
-
-    /*
-     * Number, range, or mistake, pick it apart and figure out which.
-     */
-    i1 = strspn(val->value, "0123456789");
-    if (val->value[i1] == '\0') {
-      is_range = 0;
-    } else {
-      is_range = 1;
-      i2 = i1 + strspn(val->value + i1, " \t");
-      if (val->value[i2] != '-') {
-	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_ASNUMBER);
-	X509V3_conf_err(val);
-	goto err;
-      }
-      i2++;
-      i2 = i2 + strspn(val->value + i2, " \t");
-      i3 = i2 + strspn(val->value + i2, "0123456789");
-      if (val->value[i3] != '\0') {
-	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_ASRANGE);
-	X509V3_conf_err(val);
-	goto err;
-      }
-    }
-
-    /*
-     * Syntax is ok, read and add it.
-     */
-    if (!is_range) {
-      if (!X509V3_get_value_int(val, &min)) {
-	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);
-	goto err;
-      }
-    } else {
-      char *s = BUF_strdup(val->value);
-      if (s == NULL) {
-	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);
-	goto err;
-      }
-      s[i1] = '\0';
-      min = s2i_ASN1_INTEGER(NULL, s);
-      max = s2i_ASN1_INTEGER(NULL, s + i2);
-      OPENSSL_free(s);
-      if (min == NULL || max == NULL) {
-	ASN1_INTEGER_free(min);
-	ASN1_INTEGER_free(max);
-	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);
-	goto err;
-      }
-    }
-    if (!v3_asid_add_id_or_range(asid, which, min, max)) {
-      ASN1_INTEGER_free(min);
-      ASN1_INTEGER_free(max);
-      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);
-      goto err;
-    }
-  }
-
-  /*
-   * Canonize the result, then we're done.
-   */
-  if (!v3_asid_canonize(asid))
-    goto err;
-  return asid;
-
- err:
-  ASIdentifiers_free(asid);
-  return NULL;
-}
-
-/*
- * OpenSSL dispatch.
- */
-const X509V3_EXT_METHOD v3_asid = {
-  NID_sbgp_autonomousSysNum,	/* nid */
-  0,				/* flags */
-  ASN1_ITEM_ref(ASIdentifiers),	/* template */
-  0, 0, 0, 0,			/* old functions, ignored */
-  0,				/* i2s */
-  0,				/* s2i */
-  0,				/* i2v */
-  v2i_ASIdentifiers,		/* v2i */
-  i2r_ASIdentifiers,		/* i2r */
-  0,				/* r2i */
-  NULL				/* extension-specific data */
-};
-
-/*
- * Figure out whether extension uses inheritance.
- */
-int v3_asid_inherits(ASIdentifiers *asid)
-{
-  return (asid != NULL &&
-	  ((asid->asnum != NULL &&
-	    asid->asnum->type == ASIdentifierChoice_inherit) ||
-	   (asid->rdi != NULL &&
-	    asid->rdi->type == ASIdentifierChoice_inherit)));
-}
-
-/*
- * Figure out whether parent contains child.
- */
-static int asid_contains(ASIdOrRanges *parent, ASIdOrRanges *child)
-{
-  ASN1_INTEGER *p_min, *p_max, *c_min, *c_max;
-  int p, c;
-
-  if (child == NULL || parent == child)
-    return 1;
-  if (parent == NULL)
-    return 0;
-
-  p = 0;
-  for (c = 0; c < sk_ASIdOrRange_num(child); c++) {
-    extract_min_max(sk_ASIdOrRange_value(child, c), &c_min, &c_max);
-    for (;; p++) {
-      if (p >= sk_ASIdOrRange_num(parent))
-	return 0;
-      extract_min_max(sk_ASIdOrRange_value(parent, p), &p_min, &p_max);
-      if (ASN1_INTEGER_cmp(p_max, c_max) < 0)
-	continue;
-      if (ASN1_INTEGER_cmp(p_min, c_min) > 0)
-	return 0;
-      break;
-    }
-  }
-
-  return 1;
-}
-
-/*
- * Test whether a is a subet of b.
- */
-int v3_asid_subset(ASIdentifiers *a, ASIdentifiers *b)
-{
-  return (a == NULL ||
-	  a == b ||
-	  (b != NULL &&
-	   !v3_asid_inherits(a) &&
-	   !v3_asid_inherits(b) &&
-	   asid_contains(b->asnum->u.asIdsOrRanges,
-			 a->asnum->u.asIdsOrRanges) &&
-	   asid_contains(b->rdi->u.asIdsOrRanges,
-			 a->rdi->u.asIdsOrRanges)));
-}
-
-/*
- * Validation error handling via callback.
- */
-#define validation_err(_err_)		\
-  do {					\
-    if (ctx != NULL) {			\
-      ctx->error = _err_;		\
-      ctx->error_depth = i;		\
-      ctx->current_cert = x;		\
-      ret = ctx->verify_cb(0, ctx);	\
-    } else {				\
-      ret = 0;				\
-    }					\
-    if (!ret)				\
-      goto done;			\
-  } while (0)
-
-/*
- * Core code for RFC 3779 3.3 path validation.
- */
-static int v3_asid_validate_path_internal(X509_STORE_CTX *ctx,
-					  STACK_OF(X509) *chain,
-					  ASIdentifiers *ext)
-{
-  ASIdOrRanges *child_as = NULL, *child_rdi = NULL;
-  int i, ret = 1, inherit_as = 0, inherit_rdi = 0;
-  X509 *x;
-
-  assert(chain != NULL && sk_X509_num(chain) > 0);
-  assert(ctx != NULL || ext != NULL);
-  assert(ctx == NULL || ctx->verify_cb != NULL);
-
-  /*
-   * Figure out where to start.  If we don't have an extension to
-   * check, we're done.  Otherwise, check canonical form and
-   * set up for walking up the chain.
-   */
-  if (ext != NULL) {
-    i = -1;
-    x = NULL;
-  } else {
-    i = 0;
-    x = sk_X509_value(chain, i);
-    assert(x != NULL);
-    if ((ext = x->rfc3779_asid) == NULL)
-      goto done;
-  }
-  if (!v3_asid_is_canonical(ext))
-    validation_err(X509_V_ERR_INVALID_EXTENSION);
-  if (ext->asnum != NULL)  {
-    switch (ext->asnum->type) {
-    case ASIdentifierChoice_inherit:
-      inherit_as = 1;
-      break;
-    case ASIdentifierChoice_asIdsOrRanges:
-      child_as = ext->asnum->u.asIdsOrRanges;
-      break;
-    }
-  }
-  if (ext->rdi != NULL) {
-    switch (ext->rdi->type) {
-    case ASIdentifierChoice_inherit:
-      inherit_rdi = 1;
-      break;
-    case ASIdentifierChoice_asIdsOrRanges:
-      child_rdi = ext->rdi->u.asIdsOrRanges;
-      break;
-    }
-  }
-
-  /*
-   * Now walk up the chain.  Extensions must be in canonical form, no
-   * cert may list resources that its parent doesn't list.
-   */
-  for (i++; i < sk_X509_num(chain); i++) {
-    x = sk_X509_value(chain, i);
-    assert(x != NULL);
-    if (x->rfc3779_asid == NULL) {
-      if (child_as != NULL || child_rdi != NULL)
-	validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-      continue;
-    }
-    if (!v3_asid_is_canonical(x->rfc3779_asid))
-      validation_err(X509_V_ERR_INVALID_EXTENSION);
-    if (x->rfc3779_asid->asnum == NULL && child_as != NULL) {
-      validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-      child_as = NULL;
-      inherit_as = 0;
-    }
-    if (x->rfc3779_asid->asnum != NULL &&
-	x->rfc3779_asid->asnum->type == ASIdentifierChoice_asIdsOrRanges) {
-      if (inherit_as ||
-	  asid_contains(x->rfc3779_asid->asnum->u.asIdsOrRanges, child_as)) {
-	child_as = x->rfc3779_asid->asnum->u.asIdsOrRanges;
-	inherit_as = 0;
-      } else {
-	validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-      }
-    }
-    if (x->rfc3779_asid->rdi == NULL && child_rdi != NULL) {
-      validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-      child_rdi = NULL;
-      inherit_rdi = 0;
-    }
-    if (x->rfc3779_asid->rdi != NULL &&
-	x->rfc3779_asid->rdi->type == ASIdentifierChoice_asIdsOrRanges) {
-      if (inherit_rdi ||
-	  asid_contains(x->rfc3779_asid->rdi->u.asIdsOrRanges, child_rdi)) {
-	child_rdi = x->rfc3779_asid->rdi->u.asIdsOrRanges;
-	inherit_rdi = 0;
-      } else {
-	validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-      }
-    }
-  }
-
-  /*
-   * Trust anchor can't inherit.
-   */
-  assert(x != NULL);
-  if (x->rfc3779_asid != NULL) {
-    if (x->rfc3779_asid->asnum != NULL &&
-	x->rfc3779_asid->asnum->type == ASIdentifierChoice_inherit)
-      validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-    if (x->rfc3779_asid->rdi != NULL &&
-	x->rfc3779_asid->rdi->type == ASIdentifierChoice_inherit)
-      validation_err(X509_V_ERR_UNNESTED_RESOURCE);
-  }
-
- done:
-  return ret;
-}
-
-#undef validation_err
-
-/*
- * RFC 3779 3.3 path validation -- called from X509_verify_cert().
- */
-int v3_asid_validate_path(X509_STORE_CTX *ctx)
-{
-  return v3_asid_validate_path_internal(ctx, ctx->chain, NULL);
-}
-
-/*
- * RFC 3779 3.3 path validation of an extension.
- * Test whether chain covers extension.
- */
-int v3_asid_validate_resource_set(STACK_OF(X509) *chain,
-				  ASIdentifiers *ext,
-				  int allow_inheritance)
-{
-  if (ext == NULL)
-    return 1;
-  if (chain == NULL || sk_X509_num(chain) == 0)
-    return 0;
-  if (!allow_inheritance && v3_asid_inherits(ext))
-    return 0;
-  return v3_asid_validate_path_internal(NULL, chain, ext);
-}
-
-#endif /* OPENSSL_NO_RFC3779 */
+/*

+ * Contributed to the OpenSSL Project by the American Registry for

+ * Internet Numbers ("ARIN").

+ */

+/* ====================================================================

+ * Copyright (c) 2006 The OpenSSL Project.  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.

+ *

+ * 3. All advertising materials mentioning features or use of this

+ *    software must display the following acknowledgment:

+ *    "This product includes software developed by the OpenSSL Project

+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

+ *

+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

+ *    endorse or promote products derived from this software without

+ *    prior written permission. For written permission, please contact

+ *    licensing@OpenSSL.org.

+ *

+ * 5. Products derived from this software may not be called "OpenSSL"

+ *    nor may "OpenSSL" appear in their names without prior written

+ *    permission of the OpenSSL Project.

+ *

+ * 6. Redistributions of any form whatsoever must retain the following

+ *    acknowledgment:

+ *    "This product includes software developed by the OpenSSL Project

+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

+ * EXPRESSED 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 OpenSSL PROJECT OR

+ * ITS 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.

+ * ====================================================================

+ *

+ * This product includes cryptographic software written by Eric Young

+ * (eay@cryptsoft.com).  This product includes software written by Tim

+ * Hudson (tjh@cryptsoft.com).

+ */

+

+/*

+ * Implementation of RFC 3779 section 3.2.

+ */

+

+#include <stdio.h>

+#include <string.h>

+#include "cryptlib.h"

+#include <openssl/conf.h>

+#include <openssl/asn1.h>

+#include <openssl/asn1t.h>

+#include <openssl/x509v3.h>

+#include <openssl/x509.h>

+#include <openssl/bn.h>

+

+#ifndef OPENSSL_NO_RFC3779

+

+/*

+ * OpenSSL ASN.1 template translation of RFC 3779 3.2.3.

+ */

+

+ASN1_SEQUENCE(ASRange) = {

+  ASN1_SIMPLE(ASRange, min, ASN1_INTEGER),

+  ASN1_SIMPLE(ASRange, max, ASN1_INTEGER)

+} ASN1_SEQUENCE_END(ASRange)

+

+ASN1_CHOICE(ASIdOrRange) = {

+  ASN1_SIMPLE(ASIdOrRange, u.id,    ASN1_INTEGER),

+  ASN1_SIMPLE(ASIdOrRange, u.range, ASRange)

+} ASN1_CHOICE_END(ASIdOrRange)

+

+ASN1_CHOICE(ASIdentifierChoice) = {

+  ASN1_SIMPLE(ASIdentifierChoice,      u.inherit,       ASN1_NULL),

+  ASN1_SEQUENCE_OF(ASIdentifierChoice, u.asIdsOrRanges, ASIdOrRange)

+} ASN1_CHOICE_END(ASIdentifierChoice)

+

+ASN1_SEQUENCE(ASIdentifiers) = {

+  ASN1_EXP_OPT(ASIdentifiers, asnum, ASIdentifierChoice, 0),

+  ASN1_EXP_OPT(ASIdentifiers, rdi,   ASIdentifierChoice, 1)

+} ASN1_SEQUENCE_END(ASIdentifiers)

+

+IMPLEMENT_ASN1_FUNCTIONS(ASRange)

+IMPLEMENT_ASN1_FUNCTIONS(ASIdOrRange)

+IMPLEMENT_ASN1_FUNCTIONS(ASIdentifierChoice)

+IMPLEMENT_ASN1_FUNCTIONS(ASIdentifiers)

+

+/*

+ * i2r method for an ASIdentifierChoice.

+ */

+static int i2r_ASIdentifierChoice(BIO *out,

+				  ASIdentifierChoice *choice,

+				  int indent,

+				  const char *msg)

+{

+  int i;

+  char *s;

+  if (choice == NULL)

+    return 1;

+  BIO_printf(out, "%*s%s:\n", indent, "", msg);

+  switch (choice->type) {

+  case ASIdentifierChoice_inherit:

+    BIO_printf(out, "%*sinherit\n", indent + 2, "");

+    break;

+  case ASIdentifierChoice_asIdsOrRanges:

+    for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges); i++) {

+      ASIdOrRange *aor = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);

+      switch (aor->type) {

+      case ASIdOrRange_id:

+	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.id)) == NULL)

+	  return 0;

+	BIO_printf(out, "%*s%s\n", indent + 2, "", s);

+	OPENSSL_free(s);

+	break;

+      case ASIdOrRange_range:

+	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->min)) == NULL)

+	  return 0;

+	BIO_printf(out, "%*s%s-", indent + 2, "", s);

+	OPENSSL_free(s);

+	if ((s = i2s_ASN1_INTEGER(NULL, aor->u.range->max)) == NULL)

+	  return 0;

+	BIO_printf(out, "%s\n", s);

+	OPENSSL_free(s);

+	break;

+      default:

+	return 0;

+      }

+    }

+    break;

+  default:

+    return 0;

+  }

+  return 1;

+}

+

+/*

+ * i2r method for an ASIdentifier extension.

+ */

+static int i2r_ASIdentifiers(const X509V3_EXT_METHOD *method,

+			     void *ext,

+			     BIO *out,

+			     int indent)

+{

+  ASIdentifiers *asid = ext;

+  return (i2r_ASIdentifierChoice(out, asid->asnum, indent,

+				 "Autonomous System Numbers") &&

+	  i2r_ASIdentifierChoice(out, asid->rdi, indent,

+				 "Routing Domain Identifiers"));

+}

+

+/*

+ * Sort comparision function for a sequence of ASIdOrRange elements.

+ */

+static int ASIdOrRange_cmp(const ASIdOrRange * const *a_,

+			   const ASIdOrRange * const *b_)

+{

+  const ASIdOrRange *a = *a_, *b = *b_;

+

+  OPENSSL_assert((a->type == ASIdOrRange_id && a->u.id != NULL) ||

+	 (a->type == ASIdOrRange_range && a->u.range != NULL &&

+	  a->u.range->min != NULL && a->u.range->max != NULL));

+

+  OPENSSL_assert((b->type == ASIdOrRange_id && b->u.id != NULL) ||

+	 (b->type == ASIdOrRange_range && b->u.range != NULL &&

+	  b->u.range->min != NULL && b->u.range->max != NULL));

+

+  if (a->type == ASIdOrRange_id && b->type == ASIdOrRange_id)

+    return ASN1_INTEGER_cmp(a->u.id, b->u.id);

+

+  if (a->type == ASIdOrRange_range && b->type == ASIdOrRange_range) {

+    int r = ASN1_INTEGER_cmp(a->u.range->min, b->u.range->min);

+    return r != 0 ? r : ASN1_INTEGER_cmp(a->u.range->max, b->u.range->max);

+  }

+

+  if (a->type == ASIdOrRange_id)

+    return ASN1_INTEGER_cmp(a->u.id, b->u.range->min);

+  else

+    return ASN1_INTEGER_cmp(a->u.range->min, b->u.id);

+}

+

+/*

+ * Add an inherit element.

+ */

+int v3_asid_add_inherit(ASIdentifiers *asid, int which)

+{

+  ASIdentifierChoice **choice;

+  if (asid == NULL)

+    return 0;

+  switch (which) {

+  case V3_ASID_ASNUM:

+    choice = &asid->asnum;

+    break;

+  case V3_ASID_RDI:

+    choice = &asid->rdi;

+    break;

+  default:

+    return 0;

+  }

+  if (*choice == NULL) {

+    if ((*choice = ASIdentifierChoice_new()) == NULL)

+      return 0;

+    OPENSSL_assert((*choice)->u.inherit == NULL);

+    if (((*choice)->u.inherit = ASN1_NULL_new()) == NULL)

+      return 0;

+    (*choice)->type = ASIdentifierChoice_inherit;

+  }

+  return (*choice)->type == ASIdentifierChoice_inherit;

+}

+

+/*

+ * Add an ID or range to an ASIdentifierChoice.

+ */

+int v3_asid_add_id_or_range(ASIdentifiers *asid,

+			    int which,

+			    ASN1_INTEGER *min,

+			    ASN1_INTEGER *max)

+{

+  ASIdentifierChoice **choice;

+  ASIdOrRange *aor;

+  if (asid == NULL)

+    return 0;

+  switch (which) {

+  case V3_ASID_ASNUM:

+    choice = &asid->asnum;

+    break;

+  case V3_ASID_RDI:

+    choice = &asid->rdi;

+    break;

+  default:

+    return 0;

+  }

+  if (*choice != NULL && (*choice)->type == ASIdentifierChoice_inherit)

+    return 0;

+  if (*choice == NULL) {

+    if ((*choice = ASIdentifierChoice_new()) == NULL)

+      return 0;

+    OPENSSL_assert((*choice)->u.asIdsOrRanges == NULL);

+    (*choice)->u.asIdsOrRanges = sk_ASIdOrRange_new(ASIdOrRange_cmp);

+    if ((*choice)->u.asIdsOrRanges == NULL)

+      return 0;

+    (*choice)->type = ASIdentifierChoice_asIdsOrRanges;

+  }

+  if ((aor = ASIdOrRange_new()) == NULL)

+    return 0;

+  if (max == NULL) {

+    aor->type = ASIdOrRange_id;

+    aor->u.id = min;

+  } else {

+    aor->type = ASIdOrRange_range;

+    if ((aor->u.range = ASRange_new()) == NULL)

+      goto err;

+    ASN1_INTEGER_free(aor->u.range->min);

+    aor->u.range->min = min;

+    ASN1_INTEGER_free(aor->u.range->max);

+    aor->u.range->max = max;

+  }

+  if (!(sk_ASIdOrRange_push((*choice)->u.asIdsOrRanges, aor)))

+    goto err;

+  return 1;

+

+ err:

+  ASIdOrRange_free(aor);

+  return 0;

+}

+

+/*

+ * Extract min and max values from an ASIdOrRange.

+ */

+static void extract_min_max(ASIdOrRange *aor,

+			    ASN1_INTEGER **min,

+			    ASN1_INTEGER **max)

+{

+  OPENSSL_assert(aor != NULL && min != NULL && max != NULL);

+  switch (aor->type) {

+  case ASIdOrRange_id:

+    *min = aor->u.id;

+    *max = aor->u.id;

+    return;

+  case ASIdOrRange_range:

+    *min = aor->u.range->min;

+    *max = aor->u.range->max;

+    return;

+  }

+}

+

+/*

+ * Check whether an ASIdentifierChoice is in canonical form.

+ */

+static int ASIdentifierChoice_is_canonical(ASIdentifierChoice *choice)

+{

+  ASN1_INTEGER *a_max_plus_one = NULL;

+  BIGNUM *bn = NULL;

+  int i, ret = 0;

+

+  /*

+   * Empty element or inheritance is canonical.

+   */

+  if (choice == NULL || choice->type == ASIdentifierChoice_inherit)

+    return 1;

+

+  /*

+   * If not a list, or if empty list, it's broken.

+   */

+  if (choice->type != ASIdentifierChoice_asIdsOrRanges ||

+      sk_ASIdOrRange_num(choice->u.asIdsOrRanges) == 0)

+    return 0;

+

+  /*

+   * It's a list, check it.

+   */

+  for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {

+    ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);

+    ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);

+    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;

+

+    extract_min_max(a, &a_min, &a_max);

+    extract_min_max(b, &b_min, &b_max);

+

+    /*

+     * Punt misordered list, overlapping start, or inverted range.

+     */

+    if (ASN1_INTEGER_cmp(a_min, b_min) >= 0 ||

+	ASN1_INTEGER_cmp(a_min, a_max) > 0 ||

+	ASN1_INTEGER_cmp(b_min, b_max) > 0)

+      goto done;

+

+    /*

+     * Calculate a_max + 1 to check for adjacency.

+     */

+    if ((bn == NULL && (bn = BN_new()) == NULL) ||

+	ASN1_INTEGER_to_BN(a_max, bn) == NULL ||

+	!BN_add_word(bn, 1) ||

+	(a_max_plus_one = BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) {

+      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_IS_CANONICAL,

+		ERR_R_MALLOC_FAILURE);

+      goto done;

+    }

+    

+    /*

+     * Punt if adjacent or overlapping.

+     */

+    if (ASN1_INTEGER_cmp(a_max_plus_one, b_min) >= 0)

+      goto done;

+  }

+

+  ret = 1;

+

+ done:

+  ASN1_INTEGER_free(a_max_plus_one);

+  BN_free(bn);

+  return ret;

+}

+

+/*

+ * Check whether an ASIdentifier extension is in canonical form.

+ */

+int v3_asid_is_canonical(ASIdentifiers *asid)

+{

+  return (asid == NULL ||

+	  (ASIdentifierChoice_is_canonical(asid->asnum) &&

+	   ASIdentifierChoice_is_canonical(asid->rdi)));

+}

+

+/*

+ * Whack an ASIdentifierChoice into canonical form.

+ */

+static int ASIdentifierChoice_canonize(ASIdentifierChoice *choice)

+{

+  ASN1_INTEGER *a_max_plus_one = NULL;

+  BIGNUM *bn = NULL;

+  int i, ret = 0;

+

+  /*

+   * Nothing to do for empty element or inheritance.

+   */

+  if (choice == NULL || choice->type == ASIdentifierChoice_inherit)

+    return 1;

+

+  /*

+   * We have a list.  Sort it.

+   */

+  OPENSSL_assert(choice->type == ASIdentifierChoice_asIdsOrRanges);

+  sk_ASIdOrRange_sort(choice->u.asIdsOrRanges);

+

+  /*

+   * Now check for errors and suboptimal encoding, rejecting the

+   * former and fixing the latter.

+   */

+  for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {

+    ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);

+    ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);

+    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;

+

+    extract_min_max(a, &a_min, &a_max);

+    extract_min_max(b, &b_min, &b_max);

+

+    /*

+     * Make sure we're properly sorted (paranoia).

+     */

+    OPENSSL_assert(ASN1_INTEGER_cmp(a_min, b_min) <= 0);

+

+    /*

+     * Check for overlaps.

+     */

+    if (ASN1_INTEGER_cmp(a_max, b_min) >= 0) {

+      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE,

+		X509V3_R_EXTENSION_VALUE_ERROR);

+      goto done;

+    }

+

+    /*

+     * Calculate a_max + 1 to check for adjacency.

+     */

+    if ((bn == NULL && (bn = BN_new()) == NULL) ||

+	ASN1_INTEGER_to_BN(a_max, bn) == NULL ||

+	!BN_add_word(bn, 1) ||

+	(a_max_plus_one = BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) {

+      X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE, ERR_R_MALLOC_FAILURE);

+      goto done;

+    }

+    

+    /*

+     * If a and b are adjacent, merge them.

+     */

+    if (ASN1_INTEGER_cmp(a_max_plus_one, b_min) == 0) {

+      ASRange *r;

+      switch (a->type) {

+      case ASIdOrRange_id:

+	if ((r = OPENSSL_malloc(sizeof(ASRange))) == NULL) {

+	  X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE,

+		    ERR_R_MALLOC_FAILURE);

+	  goto done;

+	}

+	r->min = a_min;

+	r->max = b_max;

+	a->type = ASIdOrRange_range;

+	a->u.range = r;

+	break;

+      case ASIdOrRange_range:

+	ASN1_INTEGER_free(a->u.range->max);

+	a->u.range->max = b_max;

+	break;

+      }

+      switch (b->type) {

+      case ASIdOrRange_id:

+	b->u.id = NULL;

+	break;

+      case ASIdOrRange_range:

+	b->u.range->max = NULL;

+	break;

+      }

+      ASIdOrRange_free(b);

+      sk_ASIdOrRange_delete(choice->u.asIdsOrRanges, i + 1);

+      i--;

+      continue;

+    }

+  }

+

+  OPENSSL_assert(ASIdentifierChoice_is_canonical(choice)); /* Paranoia */

+

+  ret = 1;

+

+ done:

+  ASN1_INTEGER_free(a_max_plus_one);

+  BN_free(bn);

+  return ret;

+}

+

+/*

+ * Whack an ASIdentifier extension into canonical form.

+ */

+int v3_asid_canonize(ASIdentifiers *asid)

+{

+  return (asid == NULL ||

+	  (ASIdentifierChoice_canonize(asid->asnum) &&

+	   ASIdentifierChoice_canonize(asid->rdi)));

+}

+

+/*

+ * v2i method for an ASIdentifier extension.

+ */

+static void *v2i_ASIdentifiers(const struct v3_ext_method *method,

+			       struct v3_ext_ctx *ctx,

+			       STACK_OF(CONF_VALUE) *values)

+{

+  ASIdentifiers *asid = NULL;

+  int i;

+

+  if ((asid = ASIdentifiers_new()) == NULL) {

+    X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);

+    return NULL;

+  }

+

+  for (i = 0; i < sk_CONF_VALUE_num(values); i++) {

+    CONF_VALUE *val = sk_CONF_VALUE_value(values, i);

+    ASN1_INTEGER *min = NULL, *max = NULL;

+    int i1, i2, i3, is_range, which;

+

+    /*

+     * Figure out whether this is an AS or an RDI.

+     */

+    if (       !name_cmp(val->name, "AS")) {

+      which = V3_ASID_ASNUM;

+    } else if (!name_cmp(val->name, "RDI")) {

+      which = V3_ASID_RDI;

+    } else {

+      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_EXTENSION_NAME_ERROR);

+      X509V3_conf_err(val);

+      goto err;

+    }

+

+    /*

+     * Handle inheritance.

+     */

+    if (!strcmp(val->value, "inherit")) {

+      if (v3_asid_add_inherit(asid, which))

+	continue;

+      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_INHERITANCE);

+      X509V3_conf_err(val);

+      goto err;

+    }

+

+    /*

+     * Number, range, or mistake, pick it apart and figure out which.

+     */

+    i1 = strspn(val->value, "0123456789");

+    if (val->value[i1] == '\0') {

+      is_range = 0;

+    } else {

+      is_range = 1;

+      i2 = i1 + strspn(val->value + i1, " \t");

+      if (val->value[i2] != '-') {

+	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_ASNUMBER);

+	X509V3_conf_err(val);

+	goto err;

+      }

+      i2++;

+      i2 = i2 + strspn(val->value + i2, " \t");

+      i3 = i2 + strspn(val->value + i2, "0123456789");

+      if (val->value[i3] != '\0') {

+	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, X509V3_R_INVALID_ASRANGE);

+	X509V3_conf_err(val);

+	goto err;

+      }

+    }

+

+    /*

+     * Syntax is ok, read and add it.

+     */

+    if (!is_range) {

+      if (!X509V3_get_value_int(val, &min)) {

+	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);

+	goto err;

+      }

+    } else {

+      char *s = BUF_strdup(val->value);

+      if (s == NULL) {

+	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);

+	goto err;

+      }

+      s[i1] = '\0';

+      min = s2i_ASN1_INTEGER(NULL, s);

+      max = s2i_ASN1_INTEGER(NULL, s + i2);

+      OPENSSL_free(s);

+      if (min == NULL || max == NULL) {

+	ASN1_INTEGER_free(min);

+	ASN1_INTEGER_free(max);

+	X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);

+	goto err;

+      }

+    }

+    if (!v3_asid_add_id_or_range(asid, which, min, max)) {

+      ASN1_INTEGER_free(min);

+      ASN1_INTEGER_free(max);

+      X509V3err(X509V3_F_V2I_ASIDENTIFIERS, ERR_R_MALLOC_FAILURE);

+      goto err;

+    }

+  }

+

+  /*

+   * Canonize the result, then we're done.

+   */

+  if (!v3_asid_canonize(asid))

+    goto err;

+  return asid;

+

+ err:

+  ASIdentifiers_free(asid);

+  return NULL;

+}

+

+/*

+ * OpenSSL dispatch.

+ */

+const X509V3_EXT_METHOD v3_asid = {

+  NID_sbgp_autonomousSysNum,	/* nid */

+  0,				/* flags */

+  ASN1_ITEM_ref(ASIdentifiers),	/* template */

+  0, 0, 0, 0,			/* old functions, ignored */

+  0,				/* i2s */

+  0,				/* s2i */

+  0,				/* i2v */

+  v2i_ASIdentifiers,		/* v2i */

+  i2r_ASIdentifiers,		/* i2r */

+  0,				/* r2i */

+  NULL				/* extension-specific data */

+};

+

+/*

+ * Figure out whether extension uses inheritance.

+ */

+int v3_asid_inherits(ASIdentifiers *asid)

+{

+  return (asid != NULL &&

+	  ((asid->asnum != NULL &&

+	    asid->asnum->type == ASIdentifierChoice_inherit) ||

+	   (asid->rdi != NULL &&

+	    asid->rdi->type == ASIdentifierChoice_inherit)));

+}

+

+/*

+ * Figure out whether parent contains child.

+ */

+static int asid_contains(ASIdOrRanges *parent, ASIdOrRanges *child)

+{

+  ASN1_INTEGER *p_min, *p_max, *c_min, *c_max;

+  int p, c;

+

+  if (child == NULL || parent == child)

+    return 1;

+  if (parent == NULL)

+    return 0;

+

+  p = 0;

+  for (c = 0; c < sk_ASIdOrRange_num(child); c++) {

+    extract_min_max(sk_ASIdOrRange_value(child, c), &c_min, &c_max);

+    for (;; p++) {

+      if (p >= sk_ASIdOrRange_num(parent))

+	return 0;

+      extract_min_max(sk_ASIdOrRange_value(parent, p), &p_min, &p_max);

+      if (ASN1_INTEGER_cmp(p_max, c_max) < 0)

+	continue;

+      if (ASN1_INTEGER_cmp(p_min, c_min) > 0)

+	return 0;

+      break;

+    }

+  }

+

+  return 1;

+}

+

+/*

+ * Test whether a is a subet of b.

+ */

+int v3_asid_subset(ASIdentifiers *a, ASIdentifiers *b)

+{

+  return (a == NULL ||

+	  a == b ||

+	  (b != NULL &&

+	   !v3_asid_inherits(a) &&

+	   !v3_asid_inherits(b) &&

+	   asid_contains(b->asnum->u.asIdsOrRanges,

+			 a->asnum->u.asIdsOrRanges) &&

+	   asid_contains(b->rdi->u.asIdsOrRanges,

+			 a->rdi->u.asIdsOrRanges)));

+}

+

+/*

+ * Validation error handling via callback.

+ */

+#define validation_err(_err_)		\

+  do {					\

+    if (ctx != NULL) {			\

+      ctx->error = _err_;		\

+      ctx->error_depth = i;		\

+      ctx->current_cert = x;		\

+      ret = ctx->verify_cb(0, ctx);	\

+    } else {				\

+      ret = 0;				\

+    }					\

+    if (!ret)				\

+      goto done;			\

+  } while (0)

+

+/*

+ * Core code for RFC 3779 3.3 path validation.

+ */

+static int v3_asid_validate_path_internal(X509_STORE_CTX *ctx,

+					  STACK_OF(X509) *chain,

+					  ASIdentifiers *ext)

+{

+  ASIdOrRanges *child_as = NULL, *child_rdi = NULL;

+  int i, ret = 1, inherit_as = 0, inherit_rdi = 0;

+  X509 *x;

+

+  OPENSSL_assert(chain != NULL && sk_X509_num(chain) > 0);

+  OPENSSL_assert(ctx != NULL || ext != NULL);

+  OPENSSL_assert(ctx == NULL || ctx->verify_cb != NULL);

+

+  /*

+   * Figure out where to start.  If we don't have an extension to

+   * check, we're done.  Otherwise, check canonical form and

+   * set up for walking up the chain.

+   */

+  if (ext != NULL) {

+    i = -1;

+    x = NULL;

+  } else {

+    i = 0;

+    x = sk_X509_value(chain, i);

+    OPENSSL_assert(x != NULL);

+    if ((ext = x->rfc3779_asid) == NULL)

+      goto done;

+  }

+  if (!v3_asid_is_canonical(ext))

+    validation_err(X509_V_ERR_INVALID_EXTENSION);

+  if (ext->asnum != NULL)  {

+    switch (ext->asnum->type) {

+    case ASIdentifierChoice_inherit:

+      inherit_as = 1;

+      break;

+    case ASIdentifierChoice_asIdsOrRanges:

+      child_as = ext->asnum->u.asIdsOrRanges;

+      break;

+    }

+  }

+  if (ext->rdi != NULL) {

+    switch (ext->rdi->type) {

+    case ASIdentifierChoice_inherit:

+      inherit_rdi = 1;

+      break;

+    case ASIdentifierChoice_asIdsOrRanges:

+      child_rdi = ext->rdi->u.asIdsOrRanges;

+      break;

+    }

+  }

+

+  /*

+   * Now walk up the chain.  Extensions must be in canonical form, no

+   * cert may list resources that its parent doesn't list.

+   */

+  for (i++; i < sk_X509_num(chain); i++) {

+    x = sk_X509_value(chain, i);

+    OPENSSL_assert(x != NULL);

+    if (x->rfc3779_asid == NULL) {

+      if (child_as != NULL || child_rdi != NULL)

+	validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+      continue;

+    }

+    if (!v3_asid_is_canonical(x->rfc3779_asid))

+      validation_err(X509_V_ERR_INVALID_EXTENSION);

+    if (x->rfc3779_asid->asnum == NULL && child_as != NULL) {

+      validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+      child_as = NULL;

+      inherit_as = 0;

+    }

+    if (x->rfc3779_asid->asnum != NULL &&

+	x->rfc3779_asid->asnum->type == ASIdentifierChoice_asIdsOrRanges) {

+      if (inherit_as ||

+	  asid_contains(x->rfc3779_asid->asnum->u.asIdsOrRanges, child_as)) {

+	child_as = x->rfc3779_asid->asnum->u.asIdsOrRanges;

+	inherit_as = 0;

+      } else {

+	validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+      }

+    }

+    if (x->rfc3779_asid->rdi == NULL && child_rdi != NULL) {

+      validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+      child_rdi = NULL;

+      inherit_rdi = 0;

+    }

+    if (x->rfc3779_asid->rdi != NULL &&

+	x->rfc3779_asid->rdi->type == ASIdentifierChoice_asIdsOrRanges) {

+      if (inherit_rdi ||

+	  asid_contains(x->rfc3779_asid->rdi->u.asIdsOrRanges, child_rdi)) {

+	child_rdi = x->rfc3779_asid->rdi->u.asIdsOrRanges;

+	inherit_rdi = 0;

+      } else {

+	validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+      }

+    }

+  }

+

+  /*

+   * Trust anchor can't inherit.

+   */

+  OPENSSL_assert(x != NULL);

+  if (x->rfc3779_asid != NULL) {

+    if (x->rfc3779_asid->asnum != NULL &&

+	x->rfc3779_asid->asnum->type == ASIdentifierChoice_inherit)

+      validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+    if (x->rfc3779_asid->rdi != NULL &&

+	x->rfc3779_asid->rdi->type == ASIdentifierChoice_inherit)

+      validation_err(X509_V_ERR_UNNESTED_RESOURCE);

+  }

+

+ done:

+  return ret;

+}

+

+#undef validation_err

+

+/*

+ * RFC 3779 3.3 path validation -- called from X509_verify_cert().

+ */

+int v3_asid_validate_path(X509_STORE_CTX *ctx)

+{

+  return v3_asid_validate_path_internal(ctx, ctx->chain, NULL);

+}

+

+/*

+ * RFC 3779 3.3 path validation of an extension.

+ * Test whether chain covers extension.

+ */

+int v3_asid_validate_resource_set(STACK_OF(X509) *chain,

+				  ASIdentifiers *ext,

+				  int allow_inheritance)

+{

+  if (ext == NULL)

+    return 1;

+  if (chain == NULL || sk_X509_num(chain) == 0)

+    return 0;

+  if (!allow_inheritance && v3_asid_inherits(ext))

+    return 0;

+  return v3_asid_validate_path_internal(NULL, chain, ext);

+}

+

+#endif /* OPENSSL_NO_RFC3779 */