CTLOG_STORE_new_ex, CTLOG_STORE_new, CTLOG_STORE_free, CTLOG_STORE_load_default_file, CTLOG_STORE_load_file - Create and populate a Certificate Transparency log list
#include <openssl/ct.h>
CTLOG_STORE *CTLOG_STORE_new_ex(OSSL_LIB_CTX *libctx, const char *propq);
CTLOG_STORE *CTLOG_STORE_new(void);
void CTLOG_STORE_free(CTLOG_STORE *store);
int CTLOG_STORE_load_default_file(CTLOG_STORE *store);
int CTLOG_STORE_load_file(CTLOG_STORE *store, const char *file);A CTLOG_STORE is a container for a list of CTLOGs (Certificate Transparency logs). The list can be loaded from one or more files and then searched by LogID (see RFC 6962, Section 3.2, for the definition of a LogID).
CTLOG_STORE_new_ex() creates an empty list of CT logs associated with the library context libctx and the property query string propq.
CTLOG_STORE_new() does the same thing as CTLOG_STORE_new_ex() but with the default library context and property query string.
The CTLOG_STORE is then populated by CTLOG_STORE_load_default_file() or CTLOG_STORE_load_file(). CTLOG_STORE_load_default_file() loads from the default file, which is named ct_log_list.cnf in OPENSSLDIR (see the output of openssl-version(1)). This can be overridden using an environment variable named CTLOG_FILE. CTLOG_STORE_load_file() loads from a caller-specified file path instead. Both of these functions append any loaded CT logs to the CTLOG_STORE.
The expected format of the file is:
enabled_logs=foo,bar
[foo]
description = Log 1
key = <base64-encoded DER SubjectPublicKeyInfo here>
[bar]
description = Log 2
key = <base64-encoded DER SubjectPublicKeyInfo here>Once a CTLOG_STORE is no longer required, it should be passed to CTLOG_STORE_free(). This will delete all of the CTLOGs stored within, along with the CTLOG_STORE itself. If the argument is NULL, nothing is done.
If there are any invalid CT logs in a file, they are skipped and the remaining valid logs will still be added to the CTLOG_STORE. A CT log will be considered invalid if it is missing a "key" or "description" field.
Both CTLOG_STORE_load_default_file and CTLOG_STORE_load_file return 1 if all CT logs in the file are successfully parsed and loaded, 0 otherwise.
ct(7), CTLOG_STORE_get0_log_by_id(3), SSL_CTX_set_ctlog_list_file(3)
CTLOG_STORE_new_ex was added in OpenSSL 3.0. All other functions were added in OpenSSL 1.1.0.
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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.