Reorganize third-party dependencies into `thirdparty` directory (#491)

* rename `include` to `thirdparty`
* remove duplicate minhook in wsock32
* move minhook into its own directory
* move openssl lib into separate directories

1 files changed, 573 insertions, 0 deletions

diff --git a/thirdparty/openssl/ct.h b/thirdparty/openssl/ct.h
new file mode 100644
index 00000000..06c41b70
--- /dev/null
+++ b/thirdparty/openssl/ct.h
@@ -0,0 +1,573 @@
+/*
+ * WARNING: do not edit!
+ * Generated by makefile from include\openssl\ct.h.in
+ *
+ * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+
+
+#ifndef OPENSSL_CT_H
+# define OPENSSL_CT_H
+# pragma once
+
+# include <openssl/macros.h>
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+#  define HEADER_CT_H
+# endif
+
+# include <openssl/opensslconf.h>
+
+# ifndef OPENSSL_NO_CT
+# include <openssl/types.h>
+# include <openssl/safestack.h>
+# include <openssl/x509.h>
+# include <openssl/cterr.h>
+# ifdef  __cplusplus
+extern "C" {
+# endif
+
+
+/* Minimum RSA key size, from RFC6962 */
+# define SCT_MIN_RSA_BITS 2048
+
+/* All hashes are SHA256 in v1 of Certificate Transparency */
+# define CT_V1_HASHLEN SHA256_DIGEST_LENGTH
+
+SKM_DEFINE_STACK_OF_INTERNAL(SCT, SCT, SCT)
+#define sk_SCT_num(sk) OPENSSL_sk_num(ossl_check_const_SCT_sk_type(sk))
+#define sk_SCT_value(sk, idx) ((SCT *)OPENSSL_sk_value(ossl_check_const_SCT_sk_type(sk), (idx)))
+#define sk_SCT_new(cmp) ((STACK_OF(SCT) *)OPENSSL_sk_new(ossl_check_SCT_compfunc_type(cmp)))
+#define sk_SCT_new_null() ((STACK_OF(SCT) *)OPENSSL_sk_new_null())
+#define sk_SCT_new_reserve(cmp, n) ((STACK_OF(SCT) *)OPENSSL_sk_new_reserve(ossl_check_SCT_compfunc_type(cmp), (n)))
+#define sk_SCT_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SCT_sk_type(sk), (n))
+#define sk_SCT_free(sk) OPENSSL_sk_free(ossl_check_SCT_sk_type(sk))
+#define sk_SCT_zero(sk) OPENSSL_sk_zero(ossl_check_SCT_sk_type(sk))
+#define sk_SCT_delete(sk, i) ((SCT *)OPENSSL_sk_delete(ossl_check_SCT_sk_type(sk), (i)))
+#define sk_SCT_delete_ptr(sk, ptr) ((SCT *)OPENSSL_sk_delete_ptr(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr)))
+#define sk_SCT_push(sk, ptr) OPENSSL_sk_push(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr))
+#define sk_SCT_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr))
+#define sk_SCT_pop(sk) ((SCT *)OPENSSL_sk_pop(ossl_check_SCT_sk_type(sk)))
+#define sk_SCT_shift(sk) ((SCT *)OPENSSL_sk_shift(ossl_check_SCT_sk_type(sk)))
+#define sk_SCT_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SCT_sk_type(sk),ossl_check_SCT_freefunc_type(freefunc))
+#define sk_SCT_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr), (idx))
+#define sk_SCT_set(sk, idx, ptr) ((SCT *)OPENSSL_sk_set(ossl_check_SCT_sk_type(sk), (idx), ossl_check_SCT_type(ptr)))
+#define sk_SCT_find(sk, ptr) OPENSSL_sk_find(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr))
+#define sk_SCT_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr))
+#define sk_SCT_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SCT_sk_type(sk), ossl_check_SCT_type(ptr), pnum)
+#define sk_SCT_sort(sk) OPENSSL_sk_sort(ossl_check_SCT_sk_type(sk))
+#define sk_SCT_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SCT_sk_type(sk))
+#define sk_SCT_dup(sk) ((STACK_OF(SCT) *)OPENSSL_sk_dup(ossl_check_const_SCT_sk_type(sk)))
+#define sk_SCT_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SCT) *)OPENSSL_sk_deep_copy(ossl_check_const_SCT_sk_type(sk), ossl_check_SCT_copyfunc_type(copyfunc), ossl_check_SCT_freefunc_type(freefunc)))
+#define sk_SCT_set_cmp_func(sk, cmp) ((sk_SCT_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SCT_sk_type(sk), ossl_check_SCT_compfunc_type(cmp)))
+SKM_DEFINE_STACK_OF_INTERNAL(CTLOG, CTLOG, CTLOG)
+#define sk_CTLOG_num(sk) OPENSSL_sk_num(ossl_check_const_CTLOG_sk_type(sk))
+#define sk_CTLOG_value(sk, idx) ((CTLOG *)OPENSSL_sk_value(ossl_check_const_CTLOG_sk_type(sk), (idx)))
+#define sk_CTLOG_new(cmp) ((STACK_OF(CTLOG) *)OPENSSL_sk_new(ossl_check_CTLOG_compfunc_type(cmp)))
+#define sk_CTLOG_new_null() ((STACK_OF(CTLOG) *)OPENSSL_sk_new_null())
+#define sk_CTLOG_new_reserve(cmp, n) ((STACK_OF(CTLOG) *)OPENSSL_sk_new_reserve(ossl_check_CTLOG_compfunc_type(cmp), (n)))
+#define sk_CTLOG_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_CTLOG_sk_type(sk), (n))
+#define sk_CTLOG_free(sk) OPENSSL_sk_free(ossl_check_CTLOG_sk_type(sk))
+#define sk_CTLOG_zero(sk) OPENSSL_sk_zero(ossl_check_CTLOG_sk_type(sk))
+#define sk_CTLOG_delete(sk, i) ((CTLOG *)OPENSSL_sk_delete(ossl_check_CTLOG_sk_type(sk), (i)))
+#define sk_CTLOG_delete_ptr(sk, ptr) ((CTLOG *)OPENSSL_sk_delete_ptr(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr)))
+#define sk_CTLOG_push(sk, ptr) OPENSSL_sk_push(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr))
+#define sk_CTLOG_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr))
+#define sk_CTLOG_pop(sk) ((CTLOG *)OPENSSL_sk_pop(ossl_check_CTLOG_sk_type(sk)))
+#define sk_CTLOG_shift(sk) ((CTLOG *)OPENSSL_sk_shift(ossl_check_CTLOG_sk_type(sk)))
+#define sk_CTLOG_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_CTLOG_sk_type(sk),ossl_check_CTLOG_freefunc_type(freefunc))
+#define sk_CTLOG_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr), (idx))
+#define sk_CTLOG_set(sk, idx, ptr) ((CTLOG *)OPENSSL_sk_set(ossl_check_CTLOG_sk_type(sk), (idx), ossl_check_CTLOG_type(ptr)))
+#define sk_CTLOG_find(sk, ptr) OPENSSL_sk_find(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr))
+#define sk_CTLOG_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr))
+#define sk_CTLOG_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_type(ptr), pnum)
+#define sk_CTLOG_sort(sk) OPENSSL_sk_sort(ossl_check_CTLOG_sk_type(sk))
+#define sk_CTLOG_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_CTLOG_sk_type(sk))
+#define sk_CTLOG_dup(sk) ((STACK_OF(CTLOG) *)OPENSSL_sk_dup(ossl_check_const_CTLOG_sk_type(sk)))
+#define sk_CTLOG_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(CTLOG) *)OPENSSL_sk_deep_copy(ossl_check_const_CTLOG_sk_type(sk), ossl_check_CTLOG_copyfunc_type(copyfunc), ossl_check_CTLOG_freefunc_type(freefunc)))
+#define sk_CTLOG_set_cmp_func(sk, cmp) ((sk_CTLOG_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_CTLOG_sk_type(sk), ossl_check_CTLOG_compfunc_type(cmp)))
+
+
+
+typedef enum {
+    CT_LOG_ENTRY_TYPE_NOT_SET = -1,
+    CT_LOG_ENTRY_TYPE_X509 = 0,
+    CT_LOG_ENTRY_TYPE_PRECERT = 1
+} ct_log_entry_type_t;
+
+typedef enum {
+    SCT_VERSION_NOT_SET = -1,
+    SCT_VERSION_V1 = 0
+} sct_version_t;
+
+typedef enum {
+    SCT_SOURCE_UNKNOWN,
+    SCT_SOURCE_TLS_EXTENSION,
+    SCT_SOURCE_X509V3_EXTENSION,
+    SCT_SOURCE_OCSP_STAPLED_RESPONSE
+} sct_source_t;
+
+typedef enum {
+    SCT_VALIDATION_STATUS_NOT_SET,
+    SCT_VALIDATION_STATUS_UNKNOWN_LOG,
+    SCT_VALIDATION_STATUS_VALID,
+    SCT_VALIDATION_STATUS_INVALID,
+    SCT_VALIDATION_STATUS_UNVERIFIED,
+    SCT_VALIDATION_STATUS_UNKNOWN_VERSION
+} sct_validation_status_t;
+
+/******************************************
+ * CT policy evaluation context functions *
+ ******************************************/
+
+/*
+ * Creates a new, empty policy evaluation context associated with the given
+ * library context and property query string.
+ * The caller is responsible for calling CT_POLICY_EVAL_CTX_free when finished
+ * with the CT_POLICY_EVAL_CTX.
+ */
+CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new_ex(OSSL_LIB_CTX *libctx,
+                                              const char *propq);
+                                                       
+/*
+ * The same as CT_POLICY_EVAL_CTX_new_ex() but the default library
+ * context and property query string is used.
+ */
+CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void);
+
+/* Deletes a policy evaluation context and anything it owns. */
+void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx);
+
+/* Gets the peer certificate that the SCTs are for */
+X509* CT_POLICY_EVAL_CTX_get0_cert(const CT_POLICY_EVAL_CTX *ctx);
+
+/*
+ * Sets the certificate associated with the received SCTs.
+ * Increments the reference count of cert.
+ * Returns 1 on success, 0 otherwise.
+ */
+int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert);
+
+/* Gets the issuer of the aforementioned certificate */
+X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx);
+
+/*
+ * Sets the issuer of the certificate associated with the received SCTs.
+ * Increments the reference count of issuer.
+ * Returns 1 on success, 0 otherwise.
+ */
+int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer);
+
+/* Gets the CT logs that are trusted sources of SCTs */
+const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx);
+
+/* Sets the log store that is in use. It must outlive the CT_POLICY_EVAL_CTX. */
+void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,
+                                               CTLOG_STORE *log_store);
+
+/*
+ * Gets the time, in milliseconds since the Unix epoch, that will be used as the
+ * current time when checking whether an SCT was issued in the future.
+ * Such SCTs will fail validation, as required by RFC6962.
+ */
+uint64_t CT_POLICY_EVAL_CTX_get_time(const CT_POLICY_EVAL_CTX *ctx);
+
+/*
+ * Sets the time to evaluate SCTs against, in milliseconds since the Unix epoch.
+ * If an SCT's timestamp is after this time, it will be interpreted as having
+ * been issued in the future. RFC6962 states that "TLS clients MUST reject SCTs
+ * whose timestamp is in the future", so an SCT will not validate in this case.
+ */
+void CT_POLICY_EVAL_CTX_set_time(CT_POLICY_EVAL_CTX *ctx, uint64_t time_in_ms);
+
+/*****************
+ * SCT functions *
+ *****************/
+
+/*
+ * Creates a new, blank SCT.
+ * The caller is responsible for calling SCT_free when finished with the SCT.
+ */
+SCT *SCT_new(void);
+
+/*
+ * Creates a new SCT from some base64-encoded strings.
+ * The caller is responsible for calling SCT_free when finished with the SCT.
+ */
+SCT *SCT_new_from_base64(unsigned char version,
+                         const char *logid_base64,
+                         ct_log_entry_type_t entry_type,
+                         uint64_t timestamp,
+                         const char *extensions_base64,
+                         const char *signature_base64);
+
+/*
+ * Frees the SCT and the underlying data structures.
+ */
+void SCT_free(SCT *sct);
+
+/*
+ * Free a stack of SCTs, and the underlying SCTs themselves.
+ * Intended to be compatible with X509V3_EXT_FREE.
+ */
+void SCT_LIST_free(STACK_OF(SCT) *a);
+
+/*
+ * Returns the version of the SCT.
+ */
+sct_version_t SCT_get_version(const SCT *sct);
+
+/*
+ * Set the version of an SCT.
+ * Returns 1 on success, 0 if the version is unrecognized.
+ */
+__owur int SCT_set_version(SCT *sct, sct_version_t version);
+
+/*
+ * Returns the log entry type of the SCT.
+ */
+ct_log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
+
+/*
+ * Set the log entry type of an SCT.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set_log_entry_type(SCT *sct, ct_log_entry_type_t entry_type);
+
+/*
+ * Gets the ID of the log that an SCT came from.
+ * Ownership of the log ID remains with the SCT.
+ * Returns the length of the log ID.
+ */
+size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
+
+/*
+ * Set the log ID of an SCT to point directly to the *log_id specified.
+ * The SCT takes ownership of the specified pointer.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
+
+/*
+ * Set the log ID of an SCT.
+ * This makes a copy of the log_id.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set1_log_id(SCT *sct, const unsigned char *log_id,
+                           size_t log_id_len);
+
+/*
+ * Returns the timestamp for the SCT (epoch time in milliseconds).
+ */
+uint64_t SCT_get_timestamp(const SCT *sct);
+
+/*
+ * Set the timestamp of an SCT (epoch time in milliseconds).
+ */
+void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
+
+/*
+ * Return the NID for the signature used by the SCT.
+ * For CT v1, this will be either NID_sha256WithRSAEncryption or
+ * NID_ecdsa_with_SHA256 (or NID_undef if incorrect/unset).
+ */
+int SCT_get_signature_nid(const SCT *sct);
+
+/*
+ * Set the signature type of an SCT
+ * For CT v1, this should be either NID_sha256WithRSAEncryption or
+ * NID_ecdsa_with_SHA256.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set_signature_nid(SCT *sct, int nid);
+
+/*
+ * Set *ext to point to the extension data for the SCT. ext must not be NULL.
+ * The SCT retains ownership of this pointer.
+ * Returns length of the data pointed to.
+ */
+size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
+
+/*
+ * Set the extensions of an SCT to point directly to the *ext specified.
+ * The SCT takes ownership of the specified pointer.
+ */
+void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
+
+/*
+ * Set the extensions of an SCT.
+ * This takes a copy of the ext.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set1_extensions(SCT *sct, const unsigned char *ext,
+                               size_t ext_len);
+
+/*
+ * Set *sig to point to the signature for the SCT. sig must not be NULL.
+ * The SCT retains ownership of this pointer.
+ * Returns length of the data pointed to.
+ */
+size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
+
+/*
+ * Set the signature of an SCT to point directly to the *sig specified.
+ * The SCT takes ownership of the specified pointer.
+ */
+void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
+
+/*
+ * Set the signature of an SCT to be a copy of the *sig specified.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set1_signature(SCT *sct, const unsigned char *sig,
+                              size_t sig_len);
+
+/*
+ * The origin of this SCT, e.g. TLS extension, OCSP response, etc.
+ */
+sct_source_t SCT_get_source(const SCT *sct);
+
+/*
+ * Set the origin of this SCT, e.g. TLS extension, OCSP response, etc.
+ * Returns 1 on success, 0 otherwise.
+ */
+__owur int SCT_set_source(SCT *sct, sct_source_t source);
+
+/*
+ * Returns a text string describing the validation status of |sct|.
+ */
+const char *SCT_validation_status_string(const SCT *sct);
+
+/*
+ * Pretty-prints an |sct| to |out|.
+ * It will be indented by the number of spaces specified by |indent|.
+ * If |logs| is not NULL, it will be used to lookup the CT log that the SCT came
+ * from, so that the log name can be printed.
+ */
+void SCT_print(const SCT *sct, BIO *out, int indent, const CTLOG_STORE *logs);
+
+/*
+ * Pretty-prints an |sct_list| to |out|.
+ * It will be indented by the number of spaces specified by |indent|.
+ * SCTs will be delimited by |separator|.
+ * If |logs| is not NULL, it will be used to lookup the CT log that each SCT
+ * came from, so that the log names can be printed.
+ */
+void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
+                    const char *separator, const CTLOG_STORE *logs);
+
+/*
+ * Gets the last result of validating this SCT.
+ * If it has not been validated yet, returns SCT_VALIDATION_STATUS_NOT_SET.
+ */
+sct_validation_status_t SCT_get_validation_status(const SCT *sct);
+
+/*
+ * Validates the given SCT with the provided context.
+ * Sets the "validation_status" field of the SCT.
+ * Returns 1 if the SCT is valid and the signature verifies.
+ * Returns 0 if the SCT is invalid or could not be verified.
+ * Returns -1 if an error occurs.
+ */
+__owur int SCT_validate(SCT *sct, const CT_POLICY_EVAL_CTX *ctx);
+
+/*
+ * Validates the given list of SCTs with the provided context.
+ * Sets the "validation_status" field of each SCT.
+ * Returns 1 if there are no invalid SCTs and all signatures verify.
+ * Returns 0 if at least one SCT is invalid or could not be verified.
+ * Returns a negative integer if an error occurs.
+ */
+__owur int SCT_LIST_validate(const STACK_OF(SCT) *scts,
+                             CT_POLICY_EVAL_CTX *ctx);
+
+
+/*********************************
+ * SCT parsing and serialization *
+ *********************************/
+
+/*
+ * Serialize (to TLS format) a stack of SCTs and return the length.
+ * "a" must not be NULL.
+ * If "pp" is NULL, just return the length of what would have been serialized.
+ * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
+ * for data that caller is responsible for freeing (only if function returns
+ * successfully).
+ * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
+ * that "*pp" is large enough to accept all of the serialized data.
+ * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
+ * on success.
+ */
+__owur int i2o_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp);
+
+/*
+ * Convert TLS format SCT list to a stack of SCTs.
+ * If "a" or "*a" is NULL, a new stack will be created that the caller is
+ * responsible for freeing (by calling SCT_LIST_free).
+ * "**pp" and "*pp" must not be NULL.
+ * Upon success, "*pp" will point to after the last bytes read, and a stack
+ * will be returned.
+ * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
+ * not defined.
+ */
+STACK_OF(SCT) *o2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
+                            size_t len);
+
+/*
+ * Serialize (to DER format) a stack of SCTs and return the length.
+ * "a" must not be NULL.
+ * If "pp" is NULL, just returns the length of what would have been serialized.
+ * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
+ * for data that caller is responsible for freeing (only if function returns
+ * successfully).
+ * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
+ * that "*pp" is large enough to accept all of the serialized data.
+ * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
+ * on success.
+ */
+__owur int i2d_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp);
+
+/*
+ * Parses an SCT list in DER format and returns it.
+ * If "a" or "*a" is NULL, a new stack will be created that the caller is
+ * responsible for freeing (by calling SCT_LIST_free).
+ * "**pp" and "*pp" must not be NULL.
+ * Upon success, "*pp" will point to after the last bytes read, and a stack
+ * will be returned.
+ * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
+ * not defined.
+ */
+STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
+                            long len);
+
+/*
+ * Serialize (to TLS format) an |sct| and write it to |out|.
+ * If |out| is null, no SCT will be output but the length will still be returned.
+ * If |out| points to a null pointer, a string will be allocated to hold the
+ * TLS-format SCT. It is the responsibility of the caller to free it.
+ * If |out| points to an allocated string, the TLS-format SCT will be written
+ * to it.
+ * The length of the SCT in TLS format will be returned.
+ */
+__owur int i2o_SCT(const SCT *sct, unsigned char **out);
+
+/*
+ * Parses an SCT in TLS format and returns it.
+ * If |psct| is not null, it will end up pointing to the parsed SCT. If it
+ * already points to a non-null pointer, the pointer will be free'd.
+ * |in| should be a pointer to a string containing the TLS-format SCT.
+ * |in| will be advanced to the end of the SCT if parsing succeeds.
+ * |len| should be the length of the SCT in |in|.
+ * Returns NULL if an error occurs.
+ * If the SCT is an unsupported version, only the SCT's 'sct' and 'sct_len'
+ * fields will be populated (with |in| and |len| respectively).
+ */
+SCT *o2i_SCT(SCT **psct, const unsigned char **in, size_t len);
+
+/********************
+ * CT log functions *
+ ********************/
+
+/*
+ * Creates a new CT log instance with the given |public_key| and |name| and
+ * associates it with the give library context |libctx| and property query
+ * string |propq|.
+ * Takes ownership of |public_key| but copies |name|.
+ * Returns NULL if malloc fails or if |public_key| cannot be converted to DER.
+ * Should be deleted by the caller using CTLOG_free when no longer needed.
+ */
+CTLOG *CTLOG_new_ex(EVP_PKEY *public_key, const char *name, OSSL_LIB_CTX *libctx,
+                    const char *propq);
+
+/*
+ * The same as CTLOG_new_ex except that the default library context and
+ * property query string are used.
+ */
+CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name);
+
+/*
+ * Creates a new CTLOG instance with the base64-encoded SubjectPublicKeyInfo DER
+ * in |pkey_base64| and associated with the given library context |libctx| and
+ * property query string |propq|. The |name| is a string to help users identify
+ * this log.
+ * Returns 1 on success, 0 on failure.
+ * Should be deleted by the caller using CTLOG_free when no longer needed.
+ */
+int CTLOG_new_from_base64_ex(CTLOG **ct_log, const char *pkey_base64,
+                             const char *name, OSSL_LIB_CTX *libctx,
+                             const char *propq);
+
+/*
+ * The same as CTLOG_new_from_base64_ex() except that the default
+ * library context and property query string are used.
+ * Returns 1 on success, 0 on failure.
+ */
+int CTLOG_new_from_base64(CTLOG ** ct_log,
+                          const char *pkey_base64, const char *name);
+
+/*
+ * Deletes a CT log instance and its fields.
+ */
+void CTLOG_free(CTLOG *log);
+
+/* Gets the name of the CT log */
+const char *CTLOG_get0_name(const CTLOG *log);
+/* Gets the ID of the CT log */
+void CTLOG_get0_log_id(const CTLOG *log, const uint8_t **log_id,
+                       size_t *log_id_len);
+/* Gets the public key of the CT log */
+EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log);
+
+/**************************
+ * CT log store functions *
+ **************************/
+
+/*
+ * Creates a new CT log store and associates it with the given libctx and
+ * property query string.
+ * Should be deleted by the caller using CTLOG_STORE_free when no longer needed.
+ */
+CTLOG_STORE *CTLOG_STORE_new_ex(OSSL_LIB_CTX *libctx, const char *propq);
+
+/*
+ * Same as CTLOG_STORE_new_ex except that the default libctx and
+ * property query string are used.
+ * Should be deleted by the caller using CTLOG_STORE_free when no longer needed.
+ */
+CTLOG_STORE *CTLOG_STORE_new(void);
+
+/*
+ * Deletes a CT log store and all of the CT log instances held within.
+ */
+void CTLOG_STORE_free(CTLOG_STORE *store);
+
+/*
+ * Finds a CT log in the store based on its log ID.
+ * Returns the CT log, or NULL if no match is found.
+ */
+const CTLOG *CTLOG_STORE_get0_log_by_id(const CTLOG_STORE *store,
+                                        const uint8_t *log_id,
+                                        size_t log_id_len);
+
+/*
+ * Loads a CT log list into a |store| from a |file|.
+ * Returns 1 if loading is successful, or 0 otherwise.
+ */
+__owur int CTLOG_STORE_load_file(CTLOG_STORE *store, const char *file);
+
+/*
+ * Loads the default CT log list into a |store|.
+ * Returns 1 if loading is successful, or 0 otherwise.
+ */
+__owur int CTLOG_STORE_load_default_file(CTLOG_STORE *store);
+
+#  ifdef  __cplusplus
+}
+#  endif
+# endif
+#endif