Files
ladybird/Libraries/LibTLS/DefaultRootCACertificates.cpp
2025-02-17 19:52:43 +01:00

94 lines
3.3 KiB
C++

/*
* Copyright (c) 2020, Ali Mohammad Pur <mpfard@serenityos.org>
* Copyright (c) 2025, Altomani Gianluca <altomanigianluca@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteBuffer.h>
#include <LibCore/StandardPaths.h>
#include <LibCrypto/ASN1/PEM.h>
#include <LibFileSystem/FileSystem.h>
#include <LibTLS/DefaultRootCACertificates.h>
namespace TLS {
static Vector<ByteString> s_default_ca_certificate_paths;
void DefaultRootCACertificates::set_default_certificate_paths(Span<ByteString> paths)
{
s_default_ca_certificate_paths.clear();
s_default_ca_certificate_paths.ensure_capacity(paths.size());
for (auto& path : paths)
s_default_ca_certificate_paths.unchecked_append(path);
}
DefaultRootCACertificates::DefaultRootCACertificates()
{
auto load_result = load_certificates(s_default_ca_certificate_paths);
if (load_result.is_error()) {
dbgln("Failed to load CA Certificates: {}", load_result.error());
return;
}
m_ca_certificates = load_result.release_value();
}
DefaultRootCACertificates& DefaultRootCACertificates::the()
{
static thread_local DefaultRootCACertificates s_the;
return s_the;
}
ErrorOr<Vector<Certificate>> DefaultRootCACertificates::load_certificates(Span<ByteString> custom_cert_paths)
{
auto cacert_file_or_error = Core::File::open("/etc/cacert.pem"sv, Core::File::OpenMode::Read);
ByteBuffer data;
if (!cacert_file_or_error.is_error())
data = TRY(cacert_file_or_error.value()->read_until_eof());
auto user_cert_path = TRY(String::formatted("{}/.config/certs.pem", Core::StandardPaths::home_directory()));
if (FileSystem::exists(user_cert_path)) {
auto user_cert_file = TRY(Core::File::open(user_cert_path, Core::File::OpenMode::Read));
TRY(data.try_append(TRY(user_cert_file->read_until_eof())));
}
for (auto& custom_cert_path : custom_cert_paths) {
if (FileSystem::exists(custom_cert_path)) {
auto custom_cert_file = TRY(Core::File::open(custom_cert_path, Core::File::OpenMode::Read));
TRY(data.try_append(TRY(custom_cert_file->read_until_eof())));
}
}
return TRY(parse_pem_root_certificate_authorities(data));
}
ErrorOr<Vector<Certificate>> DefaultRootCACertificates::parse_pem_root_certificate_authorities(ByteBuffer& data)
{
Vector<Certificate> certificates;
auto certs = TRY(Crypto::decode_pems(data));
for (auto& cert : certs) {
auto certificate_result = Certificate::parse_certificate(cert.data);
if (certificate_result.is_error()) {
// FIXME: It would be nice to have more informations about the certificate we failed to parse.
// Like: Issuer, Algorithm, CN, etc
dbgln("Failed to load certificate: {}", certificate_result.error());
continue;
}
auto certificate = certificate_result.release_value();
if (certificate.is_certificate_authority && certificate.is_self_signed()) {
TRY(certificates.try_append(move(certificate)));
} else {
dbgln("Skipped '{}' because it is not a valid root CA", TRY(certificate.subject.to_string()));
}
}
dbgln_if(TLS_DEBUG, "Loaded {} of {} ({:.2}%) provided CA Certificates", certificates.size(), certs.size(), (certificates.size() * 100.0) / certs.size());
return certificates;
}
}