+STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x);
+STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x);
+void X509_email_free(STACK_OF(OPENSSL_STRING) *sk);
+STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x);
+/* Flags for X509_check_* functions */
+
+/*
+ * Always check subject name for host match even if subject alt names present
+ */
+# define X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT 0x1
+/* Disable wildcard matching for dnsName fields and common name. */
+# define X509_CHECK_FLAG_NO_WILDCARDS 0x2
+/* Wildcards must not match a partial label. */
+# define X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS 0x4
+/* Allow (non-partial) wildcards to match multiple labels. */
+# define X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS 0x8
+/* Constraint verifier subdomain patterns to match a single labels. */
+# define X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS 0x10
+/*
+ * Match reference identifiers starting with "." to any sub-domain.
+ * This is a non-public flag, turned on implicitly when the subject
+ * reference identity is a DNS name.
+ */
+# define _X509_CHECK_FLAG_DOT_SUBDOMAINS 0x8000
+
+int X509_check_host(X509 *x, const char *chk, size_t chklen,
+ unsigned int flags, char **peername);
+int X509_check_email(X509 *x, const char *chk, size_t chklen,
+ unsigned int flags);
+int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+ unsigned int flags);
+int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags);
+
+ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc);
+ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc);
+int a2i_ipadd(unsigned char *ipout, const char *ipasc);
+int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE) *dn_sk,
+ unsigned long chtype);
+
+void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent);
+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);