+DECLARE_STACK_OF(X509_POLICY_NODE)
+
+typedef struct ASRange_st {
+ ASN1_INTEGER *min, *max;
+} ASRange;
+
+# define ASIdOrRange_id 0
+# define ASIdOrRange_range 1
+
+typedef struct ASIdOrRange_st {
+ int type;
+ union {
+ ASN1_INTEGER *id;
+ ASRange *range;
+ } u;
+} ASIdOrRange;
+
+typedef STACK_OF(ASIdOrRange) ASIdOrRanges;
+DECLARE_STACK_OF(ASIdOrRange)
+
+# define ASIdentifierChoice_inherit 0
+# define ASIdentifierChoice_asIdsOrRanges 1
+
+typedef struct ASIdentifierChoice_st {
+ int type;
+ union {
+ ASN1_NULL *inherit;
+ ASIdOrRanges *asIdsOrRanges;
+ } u;
+} ASIdentifierChoice;
+
+typedef struct ASIdentifiers_st {
+ ASIdentifierChoice *asnum, *rdi;
+} ASIdentifiers;
+
+DECLARE_ASN1_FUNCTIONS(ASRange)
+DECLARE_ASN1_FUNCTIONS(ASIdOrRange)
+DECLARE_ASN1_FUNCTIONS(ASIdentifierChoice)
+DECLARE_ASN1_FUNCTIONS(ASIdentifiers)
+
+typedef struct IPAddressRange_st {
+ ASN1_BIT_STRING *min, *max;
+} IPAddressRange;
+
+# define IPAddressOrRange_addressPrefix 0
+# define IPAddressOrRange_addressRange 1
+
+typedef struct IPAddressOrRange_st {
+ int type;
+ union {
+ ASN1_BIT_STRING *addressPrefix;
+ IPAddressRange *addressRange;
+ } u;
+} IPAddressOrRange;
+
+typedef STACK_OF(IPAddressOrRange) IPAddressOrRanges;
+DECLARE_STACK_OF(IPAddressOrRange)
+
+# define IPAddressChoice_inherit 0
+# define IPAddressChoice_addressesOrRanges 1
+
+typedef struct IPAddressChoice_st {
+ int type;
+ union {
+ ASN1_NULL *inherit;
+ IPAddressOrRanges *addressesOrRanges;
+ } u;
+} IPAddressChoice;
+
+typedef struct IPAddressFamily_st {
+ ASN1_OCTET_STRING *addressFamily;
+ IPAddressChoice *ipAddressChoice;
+} IPAddressFamily;
+
+typedef STACK_OF(IPAddressFamily) IPAddrBlocks;
+DECLARE_STACK_OF(IPAddressFamily)
+
+DECLARE_ASN1_FUNCTIONS(IPAddressRange)
+DECLARE_ASN1_FUNCTIONS(IPAddressOrRange)
+DECLARE_ASN1_FUNCTIONS(IPAddressChoice)
+DECLARE_ASN1_FUNCTIONS(IPAddressFamily)
+
+/*
+ * API tag for elements of the ASIdentifer SEQUENCE.
+ */
+# define V3_ASID_ASNUM 0
+# define V3_ASID_RDI 1
+
+/*
+ * AFI values, assigned by IANA. It'd be nice to make the AFI
+ * handling code totally generic, but there are too many little things
+ * that would need to be defined for other address families for it to
+ * be worth the trouble.
+ */
+# define IANA_AFI_IPV4 1
+# define IANA_AFI_IPV6 2
+
+/*
+ * Utilities to construct and extract values from RFC3779 extensions,
+ * since some of the encodings (particularly for IP address prefixes
+ * and ranges) are a bit tedious to work with directly.
+ */
+int v3_asid_add_inherit(ASIdentifiers *asid, int which);
+int v3_asid_add_id_or_range(ASIdentifiers *asid, int which,
+ ASN1_INTEGER *min, ASN1_INTEGER *max);
+int v3_addr_add_inherit(IPAddrBlocks *addr,
+ const unsigned afi, const unsigned *safi);
+int v3_addr_add_prefix(IPAddrBlocks *addr,
+ const unsigned afi, const unsigned *safi,
+ unsigned char *a, const int prefixlen);
+int v3_addr_add_range(IPAddrBlocks *addr,
+ const unsigned afi, const unsigned *safi,
+ unsigned char *min, unsigned char *max);
+unsigned v3_addr_get_afi(const IPAddressFamily *f);
+int v3_addr_get_range(IPAddressOrRange *aor, const unsigned afi,
+ unsigned char *min, unsigned char *max,
+ const int length);
+
+/*
+ * Canonical forms.
+ */
+int v3_asid_is_canonical(ASIdentifiers *asid);
+int v3_addr_is_canonical(IPAddrBlocks *addr);
+int v3_asid_canonize(ASIdentifiers *asid);
+int v3_addr_canonize(IPAddrBlocks *addr);
+
+/*
+ * Tests for inheritance and containment.
+ */
+int v3_asid_inherits(ASIdentifiers *asid);
+int v3_addr_inherits(IPAddrBlocks *addr);
+int v3_asid_subset(ASIdentifiers *a, ASIdentifiers *b);
+int v3_addr_subset(IPAddrBlocks *a, IPAddrBlocks *b);
+
+/*
+ * Check whether RFC 3779 extensions nest properly in chains.
+ */
+int v3_asid_validate_path(X509_STORE_CTX *);
+int v3_addr_validate_path(X509_STORE_CTX *);
+int v3_asid_validate_resource_set(STACK_OF(X509) *chain,
+ ASIdentifiers *ext, int allow_inheritance);
+int v3_addr_validate_resource_set(STACK_OF(X509) *chain,
+ IPAddrBlocks *ext, int allow_inheritance);