Update To 11.40.268.0

[platform/framework/web/crosswalk.git] / src / third_party / boringssl / src / include / openssl / bytestring.h

diff --git a/src/third_party/boringssl/src/include/openssl/bytestring.h b/src/third_party/boringssl/src/include/openssl/bytestring.h
index 1af20e8..d5e6cf9 100644 (file)
--- a/src/third_party/boringssl/src/include/openssl/bytestring.h
+++ b/src/third_party/boringssl/src/include/openssl/bytestring.h
@@ -141,6 +141,13 @@ OPENSSL_EXPORT int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value);
  * ASN.1 header bytes too. */
 OPENSSL_EXPORT int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value);
 
+/* CBS_peek_asn1_tag looks ahead at the next ASN.1 tag and returns one
+ * if the next ASN.1 element on |cbs| would have tag |tag_value|. If
+ * |cbs| is empty or the tag does not match, it returns zero. Note: if
+ * it returns one, CBS_get_asn1 may still fail if the rest of the
+ * element is malformed. */
+OPENSSL_EXPORT int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value);
+
 /* CBS_get_any_asn1_element sets |*out| to contain the next ASN.1 element from
  * |*cbs| (including header bytes) and advances |*cbs|. It sets |*out_tag| to
  * the tag number and |*out_header_len| to the length of the ASN.1 header. If
@@ -159,6 +166,41 @@ OPENSSL_EXPORT int CBS_get_any_asn1_element(CBS *cbs, CBS *out,
  * in 64 bits. */
 OPENSSL_EXPORT int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out);
 
+/* CBS_get_optional_asn1 gets an optional explicitly-tagged element
+ * from |cbs| tagged with |tag| and sets |*out| to its contents. If
+ * present, it sets |*out_present| to one, otherwise zero. It returns
+ * one on success, whether or not the element was present, and zero on
+ * decode failure. */
+OPENSSL_EXPORT int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present,
+                                         unsigned tag);
+
+/* CBS_get_optional_asn1_octet_string gets an optional
+ * explicitly-tagged OCTET STRING from |cbs|. If present, it sets
+ * |*out| to the string and |*out_present| to one. Otherwise, it sets
+ * |*out| to empty and |*out_present| to zero. |out_present| may be
+ * NULL. It returns one on success, whether or not the element was
+ * present, and zero on decode failure. */
+OPENSSL_EXPORT int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out,
+                                                      int *out_present,
+                                                      unsigned tag);
+
+/* CBS_get_optional_asn1_uint64 gets an optional explicitly-tagged
+ * INTEGER from |cbs|. If present, it sets |*out| to the
+ * value. Otherwise, it sets |*out| to |default_value|. It returns one
+ * on success, whether or not the element was present, and zero on
+ * decode failure. */
+OPENSSL_EXPORT int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out,
+                                                unsigned tag,
+                                                uint64_t default_value);
+
+/* CBS_get_optional_asn1_bool gets an optional, explicitly-tagged BOOLEAN from
+ * |cbs|. If present, it sets |*out| to either zero or one, based on the
+ * boolean. Otherwise, it sets |*out| to |default_value|. It returns one on
+ * success, whether or not the element was present, and zero on decode
+ * failure. */
+OPENSSL_EXPORT int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                                              int default_value);
+
 
 /* CRYPTO ByteBuilder.
  *
@@ -270,6 +312,10 @@ OPENSSL_EXPORT int CBB_add_u16(CBB *cbb, uint16_t value);
  * returns one on success and zero otherwise. */
 OPENSSL_EXPORT int CBB_add_u24(CBB *cbb, uint32_t value);
 
+/* CBB_add_asn1_uint64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+ * and writes |value| in its contents. It returns one on success and zero on
+ * error. */
+OPENSSL_EXPORT int CBB_add_asn1_uint64(CBB *cbb, uint64_t value);
 
 #if defined(__cplusplus)
 }  /* extern C */