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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/test_helpers.h"
#include <openssl/pem.h>
#include <stdio.h>
#include <string.h>
#include "util/logging.h"
namespace cast {
namespace certificate {
namespace testing {
std::string ReadEntireFileToString(const std::string& filename) {
FILE* file = fopen(filename.c_str(), "r");
if (file == nullptr) {
return {};
}
fseek(file, 0, SEEK_END);
long file_size = ftell(file);
fseek(file, 0, SEEK_SET);
std::string contents(file_size, 0);
int bytes_read = 0;
while (bytes_read < file_size) {
size_t ret = fread(&contents[bytes_read], 1, file_size - bytes_read, file);
if (ret == 0 && ferror(file)) {
return {};
} else {
bytes_read += ret;
}
}
fclose(file);
return contents;
}
std::vector<std::string> ReadCertificatesFromPemFile(
const std::string& filename) {
FILE* fp = fopen(filename.c_str(), "r");
if (!fp) {
return {};
}
std::vector<std::string> certs;
#define STRCMP_LITERAL(s, l) strncmp(s, l, sizeof(l))
for (;;) {
char* name;
char* header;
unsigned char* data;
long length;
if (PEM_read(fp, &name, &header, &data, &length) == 1) {
if (STRCMP_LITERAL(name, "CERTIFICATE") == 0) {
certs.emplace_back((char*)data, length);
}
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(data);
} else {
break;
}
}
fclose(fp);
return certs;
}
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(const std::string& filename) {
FILE* fp = fopen(filename.c_str(), "r");
OSP_DCHECK(fp);
SignatureTestData result = {};
for (;;) {
char* name;
char* header;
unsigned char* data;
long length;
if (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);
} else {
break;
}
}
OSP_DCHECK(result.message.data);
OSP_DCHECK(result.sha1.data);
OSP_DCHECK(result.sha256.data);
return result;
}
std::unique_ptr<TrustStore> CreateTrustStoreFromPemFile(
const std::string& 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 certificate
} // namespace cast
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