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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "media/cdm/json_web_key.h" | 5 #include "media/cdm/json_web_key.h" |
| 6 | 6 |
| 7 #include <stddef.h> | 7 #include <stddef.h> |
| 8 | 8 |
| 9 #include <memory> |
| 10 |
| 9 #include "base/base64url.h" | 11 #include "base/base64url.h" |
| 10 #include "base/json/json_reader.h" | 12 #include "base/json/json_reader.h" |
| 11 #include "base/json/json_string_value_serializer.h" | 13 #include "base/json/json_string_value_serializer.h" |
| 12 #include "base/json/string_escape.h" | 14 #include "base/json/string_escape.h" |
| 13 #include "base/logging.h" | 15 #include "base/logging.h" |
| 14 #include "base/macros.h" | 16 #include "base/macros.h" |
| 15 #include "base/memory/scoped_ptr.h" | |
| 16 #include "base/strings/string_number_conversions.h" | 17 #include "base/strings/string_number_conversions.h" |
| 17 #include "base/strings/string_piece.h" | 18 #include "base/strings/string_piece.h" |
| 18 #include "base/strings/string_util.h" | 19 #include "base/strings/string_util.h" |
| 19 #include "base/values.h" | 20 #include "base/values.h" |
| 20 | 21 |
| 21 namespace media { | 22 namespace media { |
| 22 | 23 |
| 23 const char kKeysTag[] = "keys"; | 24 const char kKeysTag[] = "keys"; |
| 24 const char kKeyTypeTag[] = "kty"; | 25 const char kKeyTypeTag[] = "kty"; |
| 25 const char kKeyTypeOct[] = "oct"; // Octet sequence. | 26 const char kKeyTypeOct[] = "oct"; // Octet sequence. |
| (...skipping 13 matching lines...) Expand all Loading... |
| 39 std::string escaped_str = | 40 std::string escaped_str = |
| 40 base::EscapeBytesAsInvalidJSONString(input.substr(0, 65), false); | 41 base::EscapeBytesAsInvalidJSONString(input.substr(0, 65), false); |
| 41 if (escaped_str.length() <= 64u) | 42 if (escaped_str.length() <= 64u) |
| 42 return escaped_str; | 43 return escaped_str; |
| 43 | 44 |
| 44 // This may end up truncating an escaped character, but the first part of | 45 // This may end up truncating an escaped character, but the first part of |
| 45 // the string should provide enough information. | 46 // the string should provide enough information. |
| 46 return escaped_str.substr(0, 61).append("..."); | 47 return escaped_str.substr(0, 61).append("..."); |
| 47 } | 48 } |
| 48 | 49 |
| 49 static scoped_ptr<base::DictionaryValue> CreateJSONDictionary( | 50 static std::unique_ptr<base::DictionaryValue> CreateJSONDictionary( |
| 50 const uint8_t* key, | 51 const uint8_t* key, |
| 51 int key_length, | 52 int key_length, |
| 52 const uint8_t* key_id, | 53 const uint8_t* key_id, |
| 53 int key_id_length) { | 54 int key_id_length) { |
| 54 std::string key_string, key_id_string; | 55 std::string key_string, key_id_string; |
| 55 base::Base64UrlEncode( | 56 base::Base64UrlEncode( |
| 56 base::StringPiece(reinterpret_cast<const char*>(key), key_length), | 57 base::StringPiece(reinterpret_cast<const char*>(key), key_length), |
| 57 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_string); | 58 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_string); |
| 58 base::Base64UrlEncode( | 59 base::Base64UrlEncode( |
| 59 base::StringPiece(reinterpret_cast<const char*>(key_id), key_id_length), | 60 base::StringPiece(reinterpret_cast<const char*>(key_id), key_id_length), |
| 60 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); | 61 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); |
| 61 | 62 |
| 62 scoped_ptr<base::DictionaryValue> jwk(new base::DictionaryValue()); | 63 std::unique_ptr<base::DictionaryValue> jwk(new base::DictionaryValue()); |
| 63 jwk->SetString(kKeyTypeTag, kKeyTypeOct); | 64 jwk->SetString(kKeyTypeTag, kKeyTypeOct); |
| 64 jwk->SetString(kKeyTag, key_string); | 65 jwk->SetString(kKeyTag, key_string); |
| 65 jwk->SetString(kKeyIdTag, key_id_string); | 66 jwk->SetString(kKeyIdTag, key_id_string); |
| 66 return jwk; | 67 return jwk; |
| 67 } | 68 } |
| 68 | 69 |
| 69 std::string GenerateJWKSet(const uint8_t* key, | 70 std::string GenerateJWKSet(const uint8_t* key, |
| 70 int key_length, | 71 int key_length, |
| 71 const uint8_t* key_id, | 72 const uint8_t* key_id, |
| 72 int key_id_length) { | 73 int key_id_length) { |
| 73 // Create the JWK, and wrap it into a JWK Set. | 74 // Create the JWK, and wrap it into a JWK Set. |
| 74 scoped_ptr<base::ListValue> list(new base::ListValue()); | 75 std::unique_ptr<base::ListValue> list(new base::ListValue()); |
| 75 list->Append( | 76 list->Append( |
| 76 CreateJSONDictionary(key, key_length, key_id, key_id_length).release()); | 77 CreateJSONDictionary(key, key_length, key_id, key_id_length).release()); |
| 77 base::DictionaryValue jwk_set; | 78 base::DictionaryValue jwk_set; |
| 78 jwk_set.Set(kKeysTag, list.release()); | 79 jwk_set.Set(kKeysTag, list.release()); |
| 79 | 80 |
| 80 // Finally serialize |jwk_set| into a string and return it. | 81 // Finally serialize |jwk_set| into a string and return it. |
| 81 std::string serialized_jwk; | 82 std::string serialized_jwk; |
| 82 JSONStringValueSerializer serializer(&serialized_jwk); | 83 JSONStringValueSerializer serializer(&serialized_jwk); |
| 83 serializer.Serialize(jwk_set); | 84 serializer.Serialize(jwk_set); |
| 84 return serialized_jwk; | 85 return serialized_jwk; |
| 85 } | 86 } |
| 86 | 87 |
| 87 std::string GenerateJWKSet(const KeyIdAndKeyPairs& keys, | 88 std::string GenerateJWKSet(const KeyIdAndKeyPairs& keys, |
| 88 MediaKeys::SessionType session_type) { | 89 MediaKeys::SessionType session_type) { |
| 89 scoped_ptr<base::ListValue> list(new base::ListValue()); | 90 std::unique_ptr<base::ListValue> list(new base::ListValue()); |
| 90 for (const auto& key_pair : keys) { | 91 for (const auto& key_pair : keys) { |
| 91 list->Append(CreateJSONDictionary( | 92 list->Append(CreateJSONDictionary( |
| 92 reinterpret_cast<const uint8_t*>(key_pair.second.data()), | 93 reinterpret_cast<const uint8_t*>(key_pair.second.data()), |
| 93 key_pair.second.length(), | 94 key_pair.second.length(), |
| 94 reinterpret_cast<const uint8_t*>(key_pair.first.data()), | 95 reinterpret_cast<const uint8_t*>(key_pair.first.data()), |
| 95 key_pair.first.length()) | 96 key_pair.first.length()) |
| 96 .release()); | 97 .release()); |
| 97 } | 98 } |
| 98 | 99 |
| 99 base::DictionaryValue jwk_set; | 100 base::DictionaryValue jwk_set; |
| (...skipping 64 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 164 } | 165 } |
| 165 | 166 |
| 166 bool ExtractKeysFromJWKSet(const std::string& jwk_set, | 167 bool ExtractKeysFromJWKSet(const std::string& jwk_set, |
| 167 KeyIdAndKeyPairs* keys, | 168 KeyIdAndKeyPairs* keys, |
| 168 MediaKeys::SessionType* session_type) { | 169 MediaKeys::SessionType* session_type) { |
| 169 if (!base::IsStringASCII(jwk_set)) { | 170 if (!base::IsStringASCII(jwk_set)) { |
| 170 DVLOG(1) << "Non ASCII JWK Set: " << jwk_set; | 171 DVLOG(1) << "Non ASCII JWK Set: " << jwk_set; |
| 171 return false; | 172 return false; |
| 172 } | 173 } |
| 173 | 174 |
| 174 scoped_ptr<base::Value> root(base::JSONReader().ReadToValue(jwk_set)); | 175 std::unique_ptr<base::Value> root(base::JSONReader().ReadToValue(jwk_set)); |
| 175 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { | 176 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { |
| 176 DVLOG(1) << "Not valid JSON: " << jwk_set << ", root: " << root.get(); | 177 DVLOG(1) << "Not valid JSON: " << jwk_set << ", root: " << root.get(); |
| 177 return false; | 178 return false; |
| 178 } | 179 } |
| 179 | 180 |
| 180 // Locate the set from the dictionary. | 181 // Locate the set from the dictionary. |
| 181 base::DictionaryValue* dictionary = | 182 base::DictionaryValue* dictionary = |
| 182 static_cast<base::DictionaryValue*>(root.get()); | 183 static_cast<base::DictionaryValue*>(root.get()); |
| 183 base::ListValue* list_val = NULL; | 184 base::ListValue* list_val = NULL; |
| 184 if (!dictionary->GetList(kKeysTag, &list_val)) { | 185 if (!dictionary->GetList(kKeysTag, &list_val)) { |
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| 233 | 234 |
| 234 bool ExtractKeyIdsFromKeyIdsInitData(const std::string& input, | 235 bool ExtractKeyIdsFromKeyIdsInitData(const std::string& input, |
| 235 KeyIdList* key_ids, | 236 KeyIdList* key_ids, |
| 236 std::string* error_message) { | 237 std::string* error_message) { |
| 237 if (!base::IsStringASCII(input)) { | 238 if (!base::IsStringASCII(input)) { |
| 238 error_message->assign("Non ASCII: "); | 239 error_message->assign("Non ASCII: "); |
| 239 error_message->append(ShortenTo64Characters(input)); | 240 error_message->append(ShortenTo64Characters(input)); |
| 240 return false; | 241 return false; |
| 241 } | 242 } |
| 242 | 243 |
| 243 scoped_ptr<base::Value> root(base::JSONReader().ReadToValue(input)); | 244 std::unique_ptr<base::Value> root(base::JSONReader().ReadToValue(input)); |
| 244 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { | 245 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { |
| 245 error_message->assign("Not valid JSON: "); | 246 error_message->assign("Not valid JSON: "); |
| 246 error_message->append(ShortenTo64Characters(input)); | 247 error_message->append(ShortenTo64Characters(input)); |
| 247 return false; | 248 return false; |
| 248 } | 249 } |
| 249 | 250 |
| 250 // Locate the set from the dictionary. | 251 // Locate the set from the dictionary. |
| 251 base::DictionaryValue* dictionary = | 252 base::DictionaryValue* dictionary = |
| 252 static_cast<base::DictionaryValue*>(root.get()); | 253 static_cast<base::DictionaryValue*>(root.get()); |
| 253 base::ListValue* list_val = NULL; | 254 base::ListValue* list_val = NULL; |
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| 295 // All done. | 296 // All done. |
| 296 key_ids->swap(local_key_ids); | 297 key_ids->swap(local_key_ids); |
| 297 error_message->clear(); | 298 error_message->clear(); |
| 298 return true; | 299 return true; |
| 299 } | 300 } |
| 300 | 301 |
| 301 void CreateLicenseRequest(const KeyIdList& key_ids, | 302 void CreateLicenseRequest(const KeyIdList& key_ids, |
| 302 MediaKeys::SessionType session_type, | 303 MediaKeys::SessionType session_type, |
| 303 std::vector<uint8_t>* license) { | 304 std::vector<uint8_t>* license) { |
| 304 // Create the license request. | 305 // Create the license request. |
| 305 scoped_ptr<base::DictionaryValue> request(new base::DictionaryValue()); | 306 std::unique_ptr<base::DictionaryValue> request(new base::DictionaryValue()); |
| 306 scoped_ptr<base::ListValue> list(new base::ListValue()); | 307 std::unique_ptr<base::ListValue> list(new base::ListValue()); |
| 307 for (const auto& key_id : key_ids) { | 308 for (const auto& key_id : key_ids) { |
| 308 std::string key_id_string; | 309 std::string key_id_string; |
| 309 base::Base64UrlEncode( | 310 base::Base64UrlEncode( |
| 310 base::StringPiece(reinterpret_cast<const char*>(key_id.data()), | 311 base::StringPiece(reinterpret_cast<const char*>(key_id.data()), |
| 311 key_id.size()), | 312 key_id.size()), |
| 312 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); | 313 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); |
| 313 | 314 |
| 314 list->AppendString(key_id_string); | 315 list->AppendString(key_id_string); |
| 315 } | 316 } |
| 316 request->Set(kKeyIdsTag, list.release()); | 317 request->Set(kKeyIdsTag, list.release()); |
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| 333 serializer.Serialize(*request); | 334 serializer.Serialize(*request); |
| 334 | 335 |
| 335 // Convert the serialized license request into std::vector and return it. | 336 // Convert the serialized license request into std::vector and return it. |
| 336 std::vector<uint8_t> result(json.begin(), json.end()); | 337 std::vector<uint8_t> result(json.begin(), json.end()); |
| 337 license->swap(result); | 338 license->swap(result); |
| 338 } | 339 } |
| 339 | 340 |
| 340 void CreateKeyIdsInitData(const KeyIdList& key_ids, | 341 void CreateKeyIdsInitData(const KeyIdList& key_ids, |
| 341 std::vector<uint8_t>* init_data) { | 342 std::vector<uint8_t>* init_data) { |
| 342 // Create the init_data. | 343 // Create the init_data. |
| 343 scoped_ptr<base::DictionaryValue> dictionary(new base::DictionaryValue()); | 344 std::unique_ptr<base::DictionaryValue> dictionary( |
| 344 scoped_ptr<base::ListValue> list(new base::ListValue()); | 345 new base::DictionaryValue()); |
| 346 std::unique_ptr<base::ListValue> list(new base::ListValue()); |
| 345 for (const auto& key_id : key_ids) { | 347 for (const auto& key_id : key_ids) { |
| 346 std::string key_id_string; | 348 std::string key_id_string; |
| 347 base::Base64UrlEncode( | 349 base::Base64UrlEncode( |
| 348 base::StringPiece(reinterpret_cast<const char*>(key_id.data()), | 350 base::StringPiece(reinterpret_cast<const char*>(key_id.data()), |
| 349 key_id.size()), | 351 key_id.size()), |
| 350 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); | 352 base::Base64UrlEncodePolicy::OMIT_PADDING, &key_id_string); |
| 351 | 353 |
| 352 list->AppendString(key_id_string); | 354 list->AppendString(key_id_string); |
| 353 } | 355 } |
| 354 dictionary->Set(kKeyIdsTag, list.release()); | 356 dictionary->Set(kKeyIdsTag, list.release()); |
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| 366 bool ExtractFirstKeyIdFromLicenseRequest(const std::vector<uint8_t>& license, | 368 bool ExtractFirstKeyIdFromLicenseRequest(const std::vector<uint8_t>& license, |
| 367 std::vector<uint8_t>* first_key) { | 369 std::vector<uint8_t>* first_key) { |
| 368 const std::string license_as_str( | 370 const std::string license_as_str( |
| 369 reinterpret_cast<const char*>(!license.empty() ? &license[0] : NULL), | 371 reinterpret_cast<const char*>(!license.empty() ? &license[0] : NULL), |
| 370 license.size()); | 372 license.size()); |
| 371 if (!base::IsStringASCII(license_as_str)) { | 373 if (!base::IsStringASCII(license_as_str)) { |
| 372 DVLOG(1) << "Non ASCII license: " << license_as_str; | 374 DVLOG(1) << "Non ASCII license: " << license_as_str; |
| 373 return false; | 375 return false; |
| 374 } | 376 } |
| 375 | 377 |
| 376 scoped_ptr<base::Value> root(base::JSONReader().ReadToValue(license_as_str)); | 378 std::unique_ptr<base::Value> root( |
| 379 base::JSONReader().ReadToValue(license_as_str)); |
| 377 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { | 380 if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY) { |
| 378 DVLOG(1) << "Not valid JSON: " << license_as_str; | 381 DVLOG(1) << "Not valid JSON: " << license_as_str; |
| 379 return false; | 382 return false; |
| 380 } | 383 } |
| 381 | 384 |
| 382 // Locate the set from the dictionary. | 385 // Locate the set from the dictionary. |
| 383 base::DictionaryValue* dictionary = | 386 base::DictionaryValue* dictionary = |
| 384 static_cast<base::DictionaryValue*>(root.get()); | 387 static_cast<base::DictionaryValue*>(root.get()); |
| 385 base::ListValue* list_val = NULL; | 388 base::ListValue* list_val = NULL; |
| 386 if (!dictionary->GetList(kKeyIdsTag, &list_val)) { | 389 if (!dictionary->GetList(kKeyIdsTag, &list_val)) { |
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| 408 DVLOG(1) << "Invalid '" << kKeyIdsTag << "' value: " << encoded_key; | 411 DVLOG(1) << "Invalid '" << kKeyIdsTag << "' value: " << encoded_key; |
| 409 return false; | 412 return false; |
| 410 } | 413 } |
| 411 | 414 |
| 412 std::vector<uint8_t> result(decoded_string.begin(), decoded_string.end()); | 415 std::vector<uint8_t> result(decoded_string.begin(), decoded_string.end()); |
| 413 first_key->swap(result); | 416 first_key->swap(result); |
| 414 return true; | 417 return true; |
| 415 } | 418 } |
| 416 | 419 |
| 417 } // namespace media | 420 } // namespace media |
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