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// Copyright 2013 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 "media/cdm/json_web_key.h"
#include "base/logging.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
class JSONWebKeyTest : public testing::Test {
public:
JSONWebKeyTest() {}
protected:
void ExtractJWKKeysAndExpect(const std::string& jwk,
bool expected_result,
size_t expected_number_of_keys) {
DCHECK(!jwk.empty());
KeyIdAndKeyPairs keys;
MediaKeys::SessionType session_type;
EXPECT_EQ(expected_result,
ExtractKeysFromJWKSet(jwk, &keys, &session_type));
EXPECT_EQ(expected_number_of_keys, keys.size());
}
void ExtractSessionTypeAndExpect(const std::string& jwk,
bool expected_result,
MediaKeys::SessionType expected_type) {
DCHECK(!jwk.empty());
KeyIdAndKeyPairs keys;
MediaKeys::SessionType session_type;
EXPECT_EQ(expected_result,
ExtractKeysFromJWKSet(jwk, &keys, &session_type));
if (expected_result) {
// Only check if successful.
EXPECT_EQ(expected_type, session_type);
}
}
void CreateLicenseAndExpect(const uint8* key_id,
int key_id_length,
MediaKeys::SessionType session_type,
const std::string& expected_result) {
std::vector<uint8> result;
CreateLicenseRequest(key_id, key_id_length, session_type, &result);
std::string s(result.begin(), result.end());
EXPECT_EQ(expected_result, s);
}
void ExtractKeyFromLicenseAndExpect(const std::string& license,
bool expected_result,
const uint8* expected_key,
int expected_key_length) {
std::vector<uint8> license_vector(license.begin(), license.end());
std::vector<uint8> key;
EXPECT_EQ(expected_result,
ExtractFirstKeyIdFromLicenseRequest(license_vector, &key));
if (expected_result) {
std::vector<uint8> key_result(expected_key,
expected_key + expected_key_length);
EXPECT_EQ(key_result, key);
}
}
};
TEST_F(JSONWebKeyTest, GenerateJWKSet) {
const uint8 data1[] = { 0x01, 0x02 };
const uint8 data2[] = { 0x01, 0x02, 0x03, 0x04 };
const uint8 data3[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10 };
EXPECT_EQ("{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}]}",
GenerateJWKSet(data1, arraysize(data1), data1, arraysize(data1)));
EXPECT_EQ(
"{\"keys\":[{\"k\":\"AQIDBA\",\"kid\":\"AQIDBA\",\"kty\":\"oct\"}]}",
GenerateJWKSet(data2, arraysize(data2), data2, arraysize(data2)));
EXPECT_EQ("{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQIDBA\",\"kty\":\"oct\"}]}",
GenerateJWKSet(data1, arraysize(data1), data2, arraysize(data2)));
EXPECT_EQ("{\"keys\":[{\"k\":\"AQIDBA\",\"kid\":\"AQI\",\"kty\":\"oct\"}]}",
GenerateJWKSet(data2, arraysize(data2), data1, arraysize(data1)));
EXPECT_EQ(
"{\"keys\":[{\"k\":\"AQIDBAUGBwgJCgsMDQ4PEA\",\"kid\":"
"\"AQIDBAUGBwgJCgsMDQ4PEA\",\"kty\":\"oct\"}]}",
GenerateJWKSet(data3, arraysize(data3), data3, arraysize(data3)));
}
TEST_F(JSONWebKeyTest, ExtractJWKKeys) {
// Try a simple JWK key (i.e. not in a set)
const std::string kJwkSimple =
"{"
" \"kty\": \"oct\","
" \"kid\": \"AAECAwQFBgcICQoLDA0ODxAREhM\","
" \"k\": \"FBUWFxgZGhscHR4fICEiIw\""
"}";
ExtractJWKKeysAndExpect(kJwkSimple, false, 0);
// Try a key list with multiple entries.
const std::string kJwksMultipleEntries =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"AAECAwQFBgcICQoLDA0ODxAREhM\","
" \"k\": \"FBUWFxgZGhscHR4fICEiIw\""
" },"
" {"
" \"kty\": \"oct\","
" \"kid\": \"JCUmJygpKissLS4vMA\","
" \"k\":\"MTIzNDU2Nzg5Ojs8PT4/QA\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksMultipleEntries, true, 2);
// Try a key with no spaces and some \n plus additional fields.
const std::string kJwksNoSpaces =
"\n\n{\"something\":1,\"keys\":[{\n\n\"kty\":\"oct\",\"alg\":\"A128KW\","
"\"kid\":\"AAECAwQFBgcICQoLDA0ODxAREhM\",\"k\":\"GawgguFyGrWKav7AX4VKUg"
"\",\"foo\":\"bar\"}]}\n\n";
ExtractJWKKeysAndExpect(kJwksNoSpaces, true, 1);
// Try some non-ASCII characters.
ExtractJWKKeysAndExpect(
"This is not ASCII due to \xff\xfe\xfd in it.", false, 0);
// Try some non-ASCII characters in an otherwise valid JWK.
const std::string kJwksInvalidCharacters =
"\n\n{\"something\":1,\"keys\":[{\n\n\"kty\":\"oct\",\"alg\":\"A128KW\","
"\"kid\":\"AAECAwQFBgcICQoLDA0ODxAREhM\",\"k\":\"\xff\xfe\xfd"
"\",\"foo\":\"bar\"}]}\n\n";
ExtractJWKKeysAndExpect(kJwksInvalidCharacters, false, 0);
// Try a badly formatted key. Assume that the JSON parser is fully tested,
// so we won't try a lot of combinations. However, need a test to ensure
// that the code doesn't crash if invalid JSON received.
ExtractJWKKeysAndExpect("This is not a JSON key.", false, 0);
// Try passing some valid JSON that is not a dictionary at the top level.
ExtractJWKKeysAndExpect("40", false, 0);
// Try an empty dictionary.
ExtractJWKKeysAndExpect("{ }", false, 0);
// Try an empty 'keys' dictionary.
ExtractJWKKeysAndExpect("{ \"keys\": [] }", true, 0);
// Try with 'keys' not a dictionary.
ExtractJWKKeysAndExpect("{ \"keys\":\"1\" }", false, 0);
// Try with 'keys' a list of integers.
ExtractJWKKeysAndExpect("{ \"keys\": [ 1, 2, 3 ] }", false, 0);
// Try padding(=) at end of 'k' base64 string.
const std::string kJwksWithPaddedKey =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"AAECAw\","
" \"k\": \"BAUGBwgJCgsMDQ4PEBESEw==\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksWithPaddedKey, false, 0);
// Try padding(=) at end of 'kid' base64 string.
const std::string kJwksWithPaddedKeyId =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"AAECAw==\","
" \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksWithPaddedKeyId, false, 0);
// Try a key with invalid base64 encoding.
const std::string kJwksWithInvalidBase64 =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"!@#$%^&*()\","
" \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksWithInvalidBase64, false, 0);
// Empty key id.
const std::string kJwksWithEmptyKeyId =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"\","
" \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksWithEmptyKeyId, false, 0);
// Try a list with multiple keys with the same kid.
const std::string kJwksDuplicateKids =
"{"
" \"keys\": ["
" {"
" \"kty\": \"oct\","
" \"kid\": \"JCUmJygpKissLS4vMA\","
" \"k\": \"FBUWFxgZGhscHR4fICEiIw\""
" },"
" {"
" \"kty\": \"oct\","
" \"kid\": \"JCUmJygpKissLS4vMA\","
" \"k\":\"MTIzNDU2Nzg5Ojs8PT4/QA\""
" }"
" ]"
"}";
ExtractJWKKeysAndExpect(kJwksDuplicateKids, true, 2);
}
TEST_F(JSONWebKeyTest, SessionType) {
ExtractSessionTypeAndExpect(
"{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}]}",
true,
MediaKeys::TEMPORARY_SESSION);
ExtractSessionTypeAndExpect(
"{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}],\"type\":"
"\"temporary\"}",
true,
MediaKeys::TEMPORARY_SESSION);
ExtractSessionTypeAndExpect(
"{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}],\"type\":"
"\"persistent\"}",
true,
MediaKeys::PERSISTENT_SESSION);
ExtractSessionTypeAndExpect(
"{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}],\"type\":"
"\"unknown\"}",
false,
MediaKeys::TEMPORARY_SESSION);
ExtractSessionTypeAndExpect(
"{\"keys\":[{\"k\":\"AQI\",\"kid\":\"AQI\",\"kty\":\"oct\"}],\"type\":3}",
false,
MediaKeys::TEMPORARY_SESSION);
}
TEST_F(JSONWebKeyTest, CreateLicense) {
const uint8 data1[] = { 0x01, 0x02 };
const uint8 data2[] = { 0x01, 0x02, 0x03, 0x04 };
const uint8 data3[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10 };
CreateLicenseAndExpect(data1,
arraysize(data1),
MediaKeys::TEMPORARY_SESSION,
"{\"kids\":[\"AQI\"],\"type\":\"temporary\"}");
CreateLicenseAndExpect(data1,
arraysize(data1),
MediaKeys::PERSISTENT_SESSION,
"{\"kids\":[\"AQI\"],\"type\":\"persistent\"}");
CreateLicenseAndExpect(data2,
arraysize(data2),
MediaKeys::TEMPORARY_SESSION,
"{\"kids\":[\"AQIDBA\"],\"type\":\"temporary\"}");
CreateLicenseAndExpect(
data3,
arraysize(data3),
MediaKeys::PERSISTENT_SESSION,
"{\"kids\":[\"AQIDBAUGBwgJCgsMDQ4PEA\"],\"type\":\"persistent\"}");
}
TEST_F(JSONWebKeyTest, ExtractLicense) {
const uint8 data1[] = { 0x01, 0x02 };
const uint8 data2[] = { 0x01, 0x02, 0x03, 0x04 };
const uint8 data3[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10 };
ExtractKeyFromLicenseAndExpect(
"{\"kids\":[\"AQI\"],\"type\":\"temporary\"}",
true,
data1,
arraysize(data1));
ExtractKeyFromLicenseAndExpect(
"{\"kids\":[\"AQIDBA\"],\"type\":\"temporary\"}",
true,
data2,
arraysize(data2));
ExtractKeyFromLicenseAndExpect(
"{\"kids\":[\"AQIDBAUGBwgJCgsMDQ4PEA\"],\"type\":\"persistent\"}",
true,
data3,
arraysize(data3));
// Try some incorrect JSON.
ExtractKeyFromLicenseAndExpect("", false, NULL, 0);
ExtractKeyFromLicenseAndExpect("!@#$%^&*()", false, NULL, 0);
// Valid JSON, but not a dictionary.
ExtractKeyFromLicenseAndExpect("6", false, NULL, 0);
ExtractKeyFromLicenseAndExpect("[\"AQI\"]", false, NULL, 0);
// Dictionary, but missing expected tag.
ExtractKeyFromLicenseAndExpect("{\"kid\":[\"AQI\"]}", false, NULL, 0);
// Correct tag, but empty list.
ExtractKeyFromLicenseAndExpect("{\"kids\":[]}", false, NULL, 0);
// Correct tag, but list doesn't contain a string.
ExtractKeyFromLicenseAndExpect("{\"kids\":[[\"AQI\"]]}", false, NULL, 0);
// Correct tag, but invalid base64 encoding.
ExtractKeyFromLicenseAndExpect("{\"kids\":[\"!@#$%^&*()\"]}", false, NULL, 0);
}
} // namespace media
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