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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cast/common/certificate/testing/test_helpers.h"
#include <openssl/bytestring.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <stdio.h>
#include <string.h>
#include "absl/strings/match.h"
#include "util/osp_logging.h"
namespace openscreen {
namespace cast {
namespace testing {
std::vector<std::string> ReadCertificatesFromPemFile(
absl::string_view filename) {
FILE* fp = fopen(filename.data(), "r");
if (!fp) {
return {};
}
std::vector<std::string> certs;
char* name;
char* header;
unsigned char* data;
long length;
while (PEM_read(fp, &name, &header, &data, &length) == 1) {
if (absl::StartsWith(name, "CERTIFICATE")) {
certs.emplace_back((char*)data, length);
}
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(data);
}
fclose(fp);
return certs;
}
bssl::UniquePtr<EVP_PKEY> ReadKeyFromPemFile(absl::string_view filename) {
FILE* fp = fopen(filename.data(), "r");
if (!fp) {
return nullptr;
}
bssl::UniquePtr<EVP_PKEY> pkey;
char* name;
char* header;
unsigned char* data;
long length;
while (PEM_read(fp, &name, &header, &data, &length) == 1) {
if (absl::StartsWith(name, "RSA PRIVATE KEY")) {
OSP_DCHECK(!pkey);
CBS cbs;
CBS_init(&cbs, data, length);
RSA* rsa = RSA_parse_private_key(&cbs);
if (rsa) {
pkey.reset(EVP_PKEY_new());
EVP_PKEY_assign_RSA(pkey.get(), rsa);
}
}
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(data);
}
fclose(fp);
return pkey;
}
SignatureTestData::SignatureTestData()
: message{nullptr, 0}, sha1{nullptr, 0}, sha256{nullptr, 0} {}
SignatureTestData::~SignatureTestData() {
OPENSSL_free(const_cast<uint8_t*>(message.data));
OPENSSL_free(const_cast<uint8_t*>(sha1.data));
OPENSSL_free(const_cast<uint8_t*>(sha256.data));
}
SignatureTestData ReadSignatureTestData(absl::string_view filename) {
FILE* fp = fopen(filename.data(), "r");
OSP_DCHECK(fp);
SignatureTestData result = {};
char* name;
char* header;
unsigned char* data;
long length;
while (PEM_read(fp, &name, &header, &data, &length) == 1) {
if (strcmp(name, "MESSAGE") == 0) {
OSP_DCHECK(!result.message.data);
result.message.data = data;
result.message.length = length;
} else if (strcmp(name, "SIGNATURE SHA1") == 0) {
OSP_DCHECK(!result.sha1.data);
result.sha1.data = data;
result.sha1.length = length;
} else if (strcmp(name, "SIGNATURE SHA256") == 0) {
OSP_DCHECK(!result.sha256.data);
result.sha256.data = data;
result.sha256.length = length;
} else {
OPENSSL_free(data);
}
OPENSSL_free(name);
OPENSSL_free(header);
}
OSP_DCHECK(result.message.data);
OSP_DCHECK(result.sha1.data);
OSP_DCHECK(result.sha256.data);
return result;
}
std::unique_ptr<TrustStore> CreateTrustStoreFromPemFile(
absl::string_view filename) {
std::unique_ptr<TrustStore> store = std::make_unique<TrustStore>();
std::vector<std::string> certs =
testing::ReadCertificatesFromPemFile(filename);
for (const auto& der_cert : certs) {
const uint8_t* data = (const uint8_t*)der_cert.data();
store->certs.emplace_back(d2i_X509(nullptr, &data, der_cert.size()));
}
return store;
}
} // namespace testing
} // namespace cast
} // namespace openscreen
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