| // Copyright 2015 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "test_helpers.h" |
| |
| #include <sstream> |
| #include <string_view> |
| |
| #include "fillins/path_service.h" |
| #include "fillins/file_util.h" |
| |
| #include "pem.h" |
| #include "cert_error_params.h" |
| #include "cert_errors.h" |
| #include "simple_path_builder_delegate.h" |
| #include "string_util.h" |
| #include "trust_store.h" |
| #include "parser.h" |
| #include <gtest/gtest.h> |
| #include <openssl/bytestring.h> |
| #include <openssl/mem.h> |
| #include <openssl/pool.h> |
| |
| namespace bssl { |
| |
| namespace { |
| |
| bool GetValue(std::string_view prefix, |
| std::string_view line, |
| std::string* value, |
| bool* has_value) { |
| if (!bssl::string_util::StartsWith(line, prefix)) |
| return false; |
| |
| if (*has_value) { |
| ADD_FAILURE() << "Duplicated " << prefix; |
| return false; |
| } |
| |
| *has_value = true; |
| *value = std::string(line.substr(prefix.size())); |
| return true; |
| } |
| |
| // Returns a string containing the dotted numeric form of |oid|, or a |
| // hex-encoded string on error. |
| std::string OidToString(der::Input oid) { |
| CBS cbs; |
| CBS_init(&cbs, oid.UnsafeData(), oid.Length()); |
| bssl::UniquePtr<char> text(CBS_asn1_oid_to_text(&cbs)); |
| if (!text) { |
| return "invalid:" + |
| bssl::string_util::HexEncode(oid.UnsafeData(), oid.Length()); |
| } |
| return text.get(); |
| } |
| |
| std::string StrSetToString(const std::set<std::string>& str_set) { |
| std::string out; |
| for (const auto& s : str_set) { |
| EXPECT_FALSE(s.empty()); |
| if (!out.empty()) { |
| out += ", "; |
| } |
| out += s; |
| } |
| return out; |
| } |
| |
| std::string StripString(std::string_view str) { |
| size_t start = str.find_first_not_of(' '); |
| if (start == str.npos) { |
| return std::string(); |
| } |
| str = str.substr(start); |
| size_t end = str.find_last_not_of(' '); |
| if (end != str.npos) { |
| ++end; |
| } |
| return std::string(str.substr(0, end)); |
| } |
| |
| std::vector<std::string> SplitString(std::string_view str) { |
| std::vector<std::string_view> split = string_util::SplitString(str, ','); |
| |
| std::vector<std::string> out; |
| for (const auto& s : split) { |
| out.push_back(StripString(s)); |
| } |
| return out; |
| } |
| |
| } // namespace |
| |
| namespace der { |
| |
| void PrintTo(const Input& data, ::std::ostream* os) { |
| size_t len; |
| if (!EVP_EncodedLength(&len, data.Length())) { |
| *os << "[]"; |
| return; |
| } |
| std::vector<uint8_t> encoded(len); |
| len = EVP_EncodeBlock(encoded.data(), data.UnsafeData(), data.Length()); |
| // Skip the trailing \0. |
| std::string b64_encoded(encoded.begin(), encoded.begin() + len); |
| *os << "[" << b64_encoded << "]"; |
| } |
| |
| } // namespace der |
| |
| der::Input SequenceValueFromString(std::string_view s) { |
| der::Parser parser((der::Input(s))); |
| der::Input data; |
| if (!parser.ReadTag(der::kSequence, &data)) { |
| ADD_FAILURE(); |
| return der::Input(); |
| } |
| if (parser.HasMore()) { |
| ADD_FAILURE(); |
| return der::Input(); |
| } |
| return data; |
| } |
| |
| ::testing::AssertionResult ReadTestDataFromPemFile( |
| const std::string& file_path_ascii, |
| const PemBlockMapping* mappings, |
| size_t mappings_length) { |
| std::string file_data = ReadTestFileToString(file_path_ascii); |
| |
| // mappings_copy is used to keep track of which mappings have already been |
| // satisfied (by nulling the |value| field). This is used to track when |
| // blocks are mulitply defined. |
| std::vector<PemBlockMapping> mappings_copy(mappings, |
| mappings + mappings_length); |
| |
| // Build the |pem_headers| vector needed for PEMTokenzier. |
| std::vector<std::string> pem_headers; |
| for (const auto& mapping : mappings_copy) { |
| pem_headers.push_back(mapping.block_name); |
| } |
| |
| PEMTokenizer pem_tokenizer(file_data, pem_headers); |
| while (pem_tokenizer.GetNext()) { |
| for (auto& mapping : mappings_copy) { |
| // Find the mapping for this block type. |
| if (pem_tokenizer.block_type() == mapping.block_name) { |
| if (!mapping.value) { |
| return ::testing::AssertionFailure() |
| << "PEM block defined multiple times: " << mapping.block_name; |
| } |
| |
| // Copy the data to the result. |
| mapping.value->assign(pem_tokenizer.data()); |
| |
| // Mark the mapping as having been satisfied. |
| mapping.value = nullptr; |
| } |
| } |
| } |
| |
| // Ensure that all specified blocks were found. |
| for (const auto& mapping : mappings_copy) { |
| if (mapping.value && !mapping.optional) { |
| return ::testing::AssertionFailure() |
| << "PEM block missing: " << mapping.block_name; |
| } |
| } |
| |
| return ::testing::AssertionSuccess(); |
| } |
| |
| VerifyCertChainTest::VerifyCertChainTest() |
| : user_initial_policy_set{der::Input(kAnyPolicyOid)} {} |
| VerifyCertChainTest::~VerifyCertChainTest() = default; |
| |
| bool VerifyCertChainTest::HasHighSeverityErrors() const { |
| // This function assumes that high severity warnings are prefixed with |
| // "ERROR: " and warnings are prefixed with "WARNING: ". This is an |
| // implementation detail of CertError::ToDebugString). |
| // |
| // Do a quick sanity-check to confirm this. |
| CertError error(CertError::SEVERITY_HIGH, "unused", nullptr); |
| EXPECT_EQ("ERROR: unused\n", error.ToDebugString()); |
| CertError warning(CertError::SEVERITY_WARNING, "unused", nullptr); |
| EXPECT_EQ("WARNING: unused\n", warning.ToDebugString()); |
| |
| // Do a simple substring test (not perfect, but good enough for our test |
| // corpus). |
| return expected_errors.find("ERROR: ") != std::string::npos; |
| } |
| |
| bool ReadCertChainFromFile(const std::string& file_path_ascii, |
| ParsedCertificateList* chain) { |
| // Reset all the out parameters to their defaults. |
| *chain = ParsedCertificateList(); |
| |
| std::string file_data = ReadTestFileToString(file_path_ascii); |
| if (file_data.empty()) |
| return false; |
| |
| std::vector<std::string> pem_headers = {"CERTIFICATE"}; |
| |
| PEMTokenizer pem_tokenizer(file_data, pem_headers); |
| while (pem_tokenizer.GetNext()) { |
| const std::string& block_data = pem_tokenizer.data(); |
| |
| CertErrors errors; |
| if (!ParsedCertificate::CreateAndAddToVector( |
| bssl::UniquePtr<CRYPTO_BUFFER>(CRYPTO_BUFFER_new( |
| reinterpret_cast<const uint8_t*>(block_data.data()), |
| block_data.size(), nullptr)), |
| {}, chain, &errors)) { |
| ADD_FAILURE() << errors.ToDebugString(); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| std::shared_ptr<const ParsedCertificate> ReadCertFromFile( |
| const std::string& file_path_ascii) { |
| ParsedCertificateList chain; |
| if (!ReadCertChainFromFile(file_path_ascii, &chain)) |
| return nullptr; |
| if (chain.size() != 1) |
| return nullptr; |
| return chain[0]; |
| } |
| |
| bool ReadVerifyCertChainTestFromFile(const std::string& file_path_ascii, |
| VerifyCertChainTest* test) { |
| // Reset all the out parameters to their defaults. |
| *test = {}; |
| |
| std::string file_data = ReadTestFileToString(file_path_ascii); |
| if (file_data.empty()) |
| return false; |
| |
| bool has_chain = false; |
| bool has_trust = false; |
| bool has_time = false; |
| bool has_errors = false; |
| bool has_key_purpose = false; |
| bool has_digest_policy = false; |
| bool has_user_constrained_policy_set = false; |
| |
| std::string kExpectedErrors = "expected_errors:"; |
| |
| std::istringstream stream(file_data); |
| for (std::string line; std::getline(stream, line, '\n');) { |
| size_t start = line.find_first_not_of(" \n\t\r\f\v"); |
| if (start == std::string::npos) { |
| continue; |
| } |
| size_t end = line.find_last_not_of(" \n\t\r\f\v"); |
| if (end == std::string::npos) { |
| continue; |
| } |
| line = line.substr(start, end + 1); |
| if (line.empty()) { |
| continue; |
| } |
| std::string_view line_piece(line); |
| |
| std::string value; |
| |
| // For details on the file format refer to: |
| // net/data/verify_certificate_chain_unittest/README. |
| if (GetValue("chain: ", line_piece, &value, &has_chain)) { |
| // Interpret the |chain| path as being relative to the .test file. |
| size_t slash = file_path_ascii.rfind('/'); |
| if (slash == std::string::npos) { |
| ADD_FAILURE() << "Bad path - expecting slashes"; |
| return false; |
| } |
| std::string chain_path = file_path_ascii.substr(0, slash) + "/" + value; |
| |
| ReadCertChainFromFile(chain_path, &test->chain); |
| } else if (GetValue("utc_time: ", line_piece, &value, &has_time)) { |
| if (value == "DEFAULT") { |
| value = "211005120000Z"; |
| } |
| if (!der::ParseUTCTime(der::Input(value), &test->time)) { |
| ADD_FAILURE() << "Failed parsing UTC time"; |
| return false; |
| } |
| } else if (GetValue("key_purpose: ", line_piece, &value, |
| &has_key_purpose)) { |
| if (value == "ANY_EKU") { |
| test->key_purpose = KeyPurpose::ANY_EKU; |
| } else if (value == "SERVER_AUTH") { |
| test->key_purpose = KeyPurpose::SERVER_AUTH; |
| } else if (value == "CLIENT_AUTH") { |
| test->key_purpose = KeyPurpose::CLIENT_AUTH; |
| } else if (value == "SERVER_AUTH_STRICT") { |
| test->key_purpose = KeyPurpose::SERVER_AUTH_STRICT; |
| } else if (value == "CLIENT_AUTH_STRICT") { |
| test->key_purpose = KeyPurpose::CLIENT_AUTH_STRICT; |
| } else { |
| ADD_FAILURE() << "Unrecognized key_purpose: " << value; |
| return false; |
| } |
| } else if (GetValue("last_cert_trust: ", line_piece, &value, &has_trust)) { |
| // TODO(mattm): convert test files to use |
| // CertificateTrust::FromDebugString strings. |
| if (value == "TRUSTED_ANCHOR") { |
| test->last_cert_trust = CertificateTrust::ForTrustAnchor(); |
| } else if (value == "TRUSTED_ANCHOR_WITH_EXPIRATION") { |
| test->last_cert_trust = |
| CertificateTrust::ForTrustAnchor().WithEnforceAnchorExpiry(); |
| } else if (value == "TRUSTED_ANCHOR_WITH_CONSTRAINTS") { |
| test->last_cert_trust = |
| CertificateTrust::ForTrustAnchor().WithEnforceAnchorConstraints(); |
| } else if (value == "TRUSTED_ANCHOR_WITH_REQUIRE_BASIC_CONSTRAINTS") { |
| test->last_cert_trust = CertificateTrust::ForTrustAnchor() |
| .WithRequireAnchorBasicConstraints(); |
| } else if (value == |
| "TRUSTED_ANCHOR_WITH_CONSTRAINTS_REQUIRE_BASIC_CONSTRAINTS") { |
| test->last_cert_trust = CertificateTrust::ForTrustAnchor() |
| .WithEnforceAnchorConstraints() |
| .WithRequireAnchorBasicConstraints(); |
| } else if (value == "TRUSTED_ANCHOR_WITH_EXPIRATION_AND_CONSTRAINTS") { |
| test->last_cert_trust = CertificateTrust::ForTrustAnchor() |
| .WithEnforceAnchorExpiry() |
| .WithEnforceAnchorConstraints(); |
| } else if (value == "TRUSTED_ANCHOR_OR_LEAF") { |
| test->last_cert_trust = CertificateTrust::ForTrustAnchorOrLeaf(); |
| } else if (value == "TRUSTED_LEAF") { |
| test->last_cert_trust = CertificateTrust::ForTrustedLeaf(); |
| } else if (value == "TRUSTED_LEAF_REQUIRE_SELF_SIGNED") { |
| test->last_cert_trust = |
| CertificateTrust::ForTrustedLeaf().WithRequireLeafSelfSigned(); |
| } else if (value == "DISTRUSTED") { |
| test->last_cert_trust = CertificateTrust::ForDistrusted(); |
| } else if (value == "UNSPECIFIED") { |
| test->last_cert_trust = CertificateTrust::ForUnspecified(); |
| } else { |
| ADD_FAILURE() << "Unrecognized last_cert_trust: " << value; |
| return false; |
| } |
| } else if (GetValue("digest_policy: ", line_piece, &value, |
| &has_digest_policy)) { |
| if (value == "STRONG") { |
| test->digest_policy = SimplePathBuilderDelegate::DigestPolicy::kStrong; |
| } else if (value == "ALLOW_SHA_1") { |
| test->digest_policy = |
| SimplePathBuilderDelegate::DigestPolicy::kWeakAllowSha1; |
| } else { |
| ADD_FAILURE() << "Unrecognized digest_policy: " << value; |
| return false; |
| } |
| } else if (GetValue("expected_user_constrained_policy_set: ", line_piece, |
| &value, &has_user_constrained_policy_set)) { |
| std::vector<std::string> split_value(SplitString(value)); |
| test->expected_user_constrained_policy_set = |
| std::set<std::string>(split_value.begin(), split_value.end()); |
| } else if (bssl::string_util::StartsWith(line_piece, "#")) { |
| // Skip comments. |
| continue; |
| } else if (line_piece == kExpectedErrors) { |
| has_errors = true; |
| // The errors start on the next line, and extend until the end of the |
| // file. |
| std::string prefix = |
| std::string("\n") + kExpectedErrors + std::string("\n"); |
| size_t errors_start = file_data.find(prefix); |
| if (errors_start == std::string::npos) { |
| ADD_FAILURE() << "expected_errors not found"; |
| return false; |
| } |
| test->expected_errors = file_data.substr(errors_start + prefix.size()); |
| break; |
| } else { |
| ADD_FAILURE() << "Unknown line: " << line_piece; |
| return false; |
| } |
| } |
| |
| if (!has_chain) { |
| ADD_FAILURE() << "Missing chain: "; |
| return false; |
| } |
| |
| if (!has_trust) { |
| ADD_FAILURE() << "Missing last_cert_trust: "; |
| return false; |
| } |
| |
| if (!has_time) { |
| ADD_FAILURE() << "Missing time: "; |
| return false; |
| } |
| |
| if (!has_key_purpose) { |
| ADD_FAILURE() << "Missing key_purpose: "; |
| return false; |
| } |
| |
| if (!has_errors) { |
| ADD_FAILURE() << "Missing errors:"; |
| return false; |
| } |
| |
| // `has_user_constrained_policy_set` is intentionally not checked here. Not |
| // specifying expected_user_constrained_policy_set means the expected policy |
| // set is empty. |
| |
| return true; |
| } |
| |
| std::string ReadTestFileToString(const std::string& file_path_ascii) { |
| // Compute the full path, relative to the src/ directory. |
| fillins::FilePath src_root; |
| bssl::fillins::PathService::Get(fillins::BSSL_TEST_DATA_ROOT, &src_root); |
| fillins::FilePath filepath = src_root.AppendASCII(file_path_ascii); |
| |
| // Read the full contents of the file. |
| std::string file_data; |
| if (!fillins::ReadFileToString(filepath, &file_data)) { |
| ADD_FAILURE() << "Couldn't read file: " << filepath.value(); |
| return std::string(); |
| } |
| |
| return file_data; |
| } |
| |
| void VerifyCertPathErrors(const std::string& expected_errors_str, |
| const CertPathErrors& actual_errors, |
| const ParsedCertificateList& chain, |
| const std::string& errors_file_path) { |
| std::string actual_errors_str = actual_errors.ToDebugString(chain); |
| |
| if (expected_errors_str != actual_errors_str) { |
| ADD_FAILURE() << "Cert path errors don't match expectations (" |
| << errors_file_path << ")\n\n" |
| << "EXPECTED:\n\n" |
| << expected_errors_str << "\n" |
| << "ACTUAL:\n\n" |
| << actual_errors_str << "\n" |
| << "===> Use " |
| "testdata/verify_certificate_chain_unittest/" |
| "rebase-errors.py to rebaseline.\n"; |
| } |
| } |
| |
| void VerifyCertErrors(const std::string& expected_errors_str, |
| const CertErrors& actual_errors, |
| const std::string& errors_file_path) { |
| std::string actual_errors_str = actual_errors.ToDebugString(); |
| |
| if (expected_errors_str != actual_errors_str) { |
| ADD_FAILURE() << "Cert errors don't match expectations (" |
| << errors_file_path << ")\n\n" |
| << "EXPECTED:\n\n" |
| << expected_errors_str << "\n" |
| << "ACTUAL:\n\n" |
| << actual_errors_str << "\n" |
| << "===> Use " |
| "testdata/parse_certificate_unittest/" |
| "rebase-errors.py to rebaseline.\n"; |
| } |
| } |
| |
| void VerifyUserConstrainedPolicySet( |
| const std::set<std::string>& expected_user_constrained_policy_str_set, |
| const std::set<der::Input>& actual_user_constrained_policy_set, |
| const std::string& errors_file_path) { |
| std::set<std::string> actual_user_constrained_policy_str_set; |
| for (const der::Input& der_oid : actual_user_constrained_policy_set) { |
| actual_user_constrained_policy_str_set.insert(OidToString(der_oid)); |
| } |
| if (expected_user_constrained_policy_str_set != |
| actual_user_constrained_policy_str_set) { |
| ADD_FAILURE() << "user_constrained_policy_set doesn't match expectations (" |
| << errors_file_path << ")\n\n" |
| << "EXPECTED: " |
| << StrSetToString(expected_user_constrained_policy_str_set) |
| << "\n" |
| << "ACTUAL: " |
| << StrSetToString(actual_user_constrained_policy_str_set) |
| << "\n"; |
| } |
| } |
| |
| } // namespace net |
