Jeff Tinker | 497ca09 | 2014-05-13 09:31:15 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_NDEBUG 0 |
| 18 | #define LOG_TAG "NdkMediaDrm" |
| 19 | |
| 20 | #include "NdkMediaDrm.h" |
| 21 | |
| 22 | #include <utils/Log.h> |
| 23 | #include <utils/StrongPointer.h> |
| 24 | #include <gui/Surface.h> |
| 25 | |
| 26 | #include <media/IDrm.h> |
| 27 | #include <media/IDrmClient.h> |
| 28 | #include <media/stagefright/MediaErrors.h> |
| 29 | #include <binder/IServiceManager.h> |
| 30 | #include <media/IMediaPlayerService.h> |
| 31 | #include <ndk/NdkMediaCrypto.h> |
| 32 | |
| 33 | |
| 34 | using namespace android; |
| 35 | |
| 36 | typedef Vector<uint8_t> idvec_t; |
| 37 | |
| 38 | struct AMediaDrm { |
| 39 | sp<IDrm> mDrm; |
| 40 | sp<IDrmClient> mDrmClient; |
| 41 | AMediaDrmEventListener mListener; |
| 42 | List<idvec_t> mIds; |
| 43 | KeyedVector<String8, String8> mQueryResults; |
| 44 | Vector<uint8_t> mKeyRequest; |
| 45 | Vector<uint8_t> mProvisionRequest; |
| 46 | String8 mProvisionUrl; |
| 47 | String8 mPropertyString; |
| 48 | Vector<uint8_t> mPropertyByteArray; |
| 49 | List<Vector<uint8_t> > mSecureStops; |
| 50 | }; |
| 51 | |
| 52 | extern "C" { |
| 53 | |
| 54 | static mediadrm_status_t translateStatus(status_t status) { |
| 55 | mediadrm_status_t result = MEDIADRM_UNKNOWN_ERROR; |
| 56 | switch (status) { |
| 57 | case OK: |
| 58 | result = MEDIADRM_OK; |
| 59 | break; |
| 60 | case android::ERROR_DRM_NOT_PROVISIONED: |
| 61 | result = MEDIADRM_NOT_PROVISIONED_ERROR; |
| 62 | break; |
| 63 | case android::ERROR_DRM_RESOURCE_BUSY: |
| 64 | result = MEDIADRM_RESOURCE_BUSY_ERROR; |
| 65 | break; |
| 66 | case android::ERROR_DRM_DEVICE_REVOKED: |
| 67 | result = MEDIADRM_DEVICE_REVOKED_ERROR; |
| 68 | break; |
| 69 | case android::ERROR_DRM_CANNOT_HANDLE: |
| 70 | result = MEDIADRM_INVALID_PARAMETER_ERROR; |
| 71 | break; |
| 72 | case android::ERROR_DRM_TAMPER_DETECTED: |
| 73 | result = MEDIADRM_TAMPER_DETECTED_ERROR; |
| 74 | break; |
| 75 | case android::ERROR_DRM_SESSION_NOT_OPENED: |
| 76 | result = MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 77 | break; |
| 78 | case android::ERROR_DRM_NO_LICENSE: |
| 79 | result = MEDIADRM_NEED_KEY_ERROR; |
| 80 | break; |
| 81 | case android::ERROR_DRM_LICENSE_EXPIRED: |
| 82 | result = MEDIADRM_LICENSE_EXPIRED_ERROR; |
| 83 | break; |
| 84 | default: |
| 85 | result = MEDIADRM_UNKNOWN_ERROR; |
| 86 | break; |
| 87 | } |
| 88 | return result; |
| 89 | } |
| 90 | |
| 91 | static sp<IDrm> CreateDrm() { |
| 92 | sp<IServiceManager> sm = defaultServiceManager(); |
| 93 | |
| 94 | sp<IBinder> binder = |
| 95 | sm->getService(String16("media.player")); |
| 96 | |
| 97 | sp<IMediaPlayerService> service = |
| 98 | interface_cast<IMediaPlayerService>(binder); |
| 99 | |
| 100 | if (service == NULL) { |
| 101 | return NULL; |
| 102 | } |
| 103 | |
| 104 | sp<IDrm> drm = service->makeDrm(); |
| 105 | |
| 106 | if (drm == NULL || (drm->initCheck() != OK && drm->initCheck() != NO_INIT)) { |
| 107 | return NULL; |
| 108 | } |
| 109 | |
| 110 | return drm; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | static sp<IDrm> CreateDrmFromUUID(const AMediaUUID uuid) { |
| 115 | sp<IDrm> drm = CreateDrm(); |
| 116 | |
| 117 | if (drm == NULL) { |
| 118 | return NULL; |
| 119 | } |
| 120 | |
| 121 | status_t err = drm->createPlugin(uuid); |
| 122 | |
| 123 | if (err != OK) { |
| 124 | return NULL; |
| 125 | } |
| 126 | |
| 127 | return drm; |
| 128 | } |
| 129 | |
| 130 | bool AMediaDrm_isCryptoSchemeSupported(const AMediaUUID uuid, const char *mimeType) { |
| 131 | sp<IDrm> drm = CreateDrm(); |
| 132 | |
| 133 | if (drm == NULL) { |
| 134 | return false; |
| 135 | } |
| 136 | |
| 137 | String8 mimeStr = mimeType ? String8(mimeType) : String8(""); |
| 138 | return drm->isCryptoSchemeSupported(uuid, mimeStr); |
| 139 | } |
| 140 | |
| 141 | AMediaDrm* AMediaDrm_createByUUID(const AMediaUUID uuid) { |
| 142 | AMediaDrm *mObj = new AMediaDrm(); |
| 143 | mObj->mDrm = CreateDrmFromUUID(uuid); |
| 144 | return mObj; |
| 145 | } |
| 146 | |
| 147 | void AMediaDrm_release(AMediaDrm *mObj) { |
| 148 | if (mObj->mDrm != NULL) { |
| 149 | mObj->mDrm->setListener(NULL); |
| 150 | mObj->mDrm->destroyPlugin(); |
| 151 | mObj->mDrm.clear(); |
| 152 | } |
| 153 | delete mObj; |
| 154 | } |
| 155 | |
| 156 | #if 0 |
| 157 | void AMediaDrm_setOnEventListener(AMediaDrm *mObj, AMediaDrmEventListener listener) { |
| 158 | mObj->mListener = listener; |
| 159 | } |
| 160 | #endif |
| 161 | |
| 162 | |
| 163 | static bool findId(AMediaDrm *mObj, const AMediaDrmByteArray &id, List<idvec_t>::iterator &iter) { |
| 164 | iter = mObj->mIds.begin(); |
| 165 | while (iter != mObj->mIds.end()) { |
| 166 | if (iter->array() == id.ptr && iter->size() == id.length) { |
| 167 | return true; |
| 168 | } |
| 169 | } |
| 170 | return false; |
| 171 | } |
| 172 | |
| 173 | mediadrm_status_t AMediaDrm_openSession(AMediaDrm *mObj, AMediaDrmSessionId &sessionId) { |
| 174 | if (!mObj || mObj->mDrm == NULL) { |
| 175 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 176 | } |
| 177 | Vector<uint8_t> session; |
| 178 | status_t status = mObj->mDrm->openSession(session); |
| 179 | if (status == OK) { |
| 180 | mObj->mIds.push_front(session); |
| 181 | List<idvec_t>::iterator iter = mObj->mIds.begin(); |
| 182 | sessionId.ptr = iter->array(); |
| 183 | sessionId.length = iter->size(); |
| 184 | } |
| 185 | return MEDIADRM_OK; |
| 186 | } |
| 187 | |
| 188 | mediadrm_status_t AMediaDrm_closeSession(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId) { |
| 189 | if (!mObj || mObj->mDrm == NULL) { |
| 190 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 191 | } |
| 192 | |
| 193 | List<idvec_t>::iterator iter; |
| 194 | if (!findId(mObj, sessionId, iter)) { |
| 195 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 196 | } |
| 197 | mObj->mDrm->closeSession(*iter); |
| 198 | mObj->mIds.erase(iter); |
| 199 | return MEDIADRM_OK; |
| 200 | } |
| 201 | |
| 202 | mediadrm_status_t AMediaDrm_getKeyRequest(AMediaDrm *mObj, const AMediaDrmScope &scope, |
| 203 | const uint8_t *init, size_t initSize, const char *mimeType, AMediaDrmKeyType keyType, |
| 204 | const AMediaDrmKeyValue *optionalParameters, size_t numOptionalParameters, |
| 205 | const uint8_t *&keyRequest, size_t &keyRequestSize) { |
| 206 | |
| 207 | if (!mObj || mObj->mDrm == NULL) { |
| 208 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 209 | } |
| 210 | if (!mimeType) { |
| 211 | return MEDIADRM_INVALID_PARAMETER_ERROR; |
| 212 | } |
| 213 | |
| 214 | List<idvec_t>::iterator iter; |
| 215 | if (!findId(mObj, scope, iter)) { |
| 216 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 217 | } |
| 218 | |
| 219 | Vector<uint8_t> mdInit; |
| 220 | mdInit.appendArray(init, initSize); |
| 221 | DrmPlugin::KeyType mdKeyType; |
| 222 | switch (keyType) { |
| 223 | case KEY_TYPE_STREAMING: |
| 224 | mdKeyType = DrmPlugin::kKeyType_Streaming; |
| 225 | break; |
| 226 | case KEY_TYPE_OFFLINE: |
| 227 | mdKeyType = DrmPlugin::kKeyType_Offline; |
| 228 | break; |
| 229 | case KEY_TYPE_RELEASE: |
| 230 | mdKeyType = DrmPlugin::kKeyType_Release; |
| 231 | break; |
| 232 | default: |
| 233 | return MEDIADRM_INVALID_PARAMETER_ERROR; |
| 234 | } |
| 235 | KeyedVector<String8, String8> mdOptionalParameters; |
| 236 | for (size_t i = 0; i < numOptionalParameters; i++) { |
| 237 | mdOptionalParameters.add(String8(optionalParameters[i].mKey), |
| 238 | String8(optionalParameters[i].mValue)); |
| 239 | } |
| 240 | String8 defaultUrl; |
| 241 | status_t status = mObj->mDrm->getKeyRequest(*iter, mdInit, String8(mimeType), |
| 242 | mdKeyType, mdOptionalParameters, mObj->mKeyRequest, defaultUrl); |
| 243 | if (status != OK) { |
| 244 | return translateStatus(status); |
| 245 | } else { |
| 246 | keyRequest = mObj->mKeyRequest.array(); |
| 247 | keyRequestSize = mObj->mKeyRequest.size(); |
| 248 | } |
| 249 | return MEDIADRM_OK; |
| 250 | } |
| 251 | |
| 252 | mediadrm_status_t AMediaDrm_provideKeyResponse(AMediaDrm *mObj, const AMediaDrmScope &scope, |
| 253 | const uint8_t *response, size_t responseSize, AMediaDrmKeySetId &keySetId) { |
| 254 | |
| 255 | if (!mObj || mObj->mDrm == NULL) { |
| 256 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 257 | } |
| 258 | if (!response || !responseSize) { |
| 259 | return MEDIADRM_INVALID_PARAMETER_ERROR; |
| 260 | } |
| 261 | |
| 262 | List<idvec_t>::iterator iter; |
| 263 | if (!findId(mObj, scope, iter)) { |
| 264 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 265 | } |
| 266 | Vector<uint8_t> mdResponse; |
| 267 | mdResponse.appendArray(response, responseSize); |
| 268 | |
| 269 | Vector<uint8_t> mdKeySetId; |
| 270 | status_t status = mObj->mDrm->provideKeyResponse(*iter, mdResponse, mdKeySetId); |
| 271 | if (status == OK) { |
| 272 | mObj->mIds.push_front(mdKeySetId); |
| 273 | List<idvec_t>::iterator iter = mObj->mIds.begin(); |
| 274 | keySetId.ptr = iter->array(); |
| 275 | keySetId.length = iter->size(); |
| 276 | } else { |
| 277 | keySetId.ptr = NULL; |
| 278 | keySetId.length = 0; |
| 279 | } |
| 280 | return MEDIADRM_OK; |
| 281 | } |
| 282 | |
| 283 | mediadrm_status_t AMediaDrm_restoreKeys(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 284 | const AMediaDrmKeySetId &keySetId) { |
| 285 | |
| 286 | if (!mObj || mObj->mDrm == NULL) { |
| 287 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 288 | } |
| 289 | List<idvec_t>::iterator iter; |
| 290 | if (!findId(mObj, sessionId, iter)) { |
| 291 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 292 | } |
| 293 | Vector<uint8_t> keySet; |
| 294 | keySet.appendArray(keySetId.ptr, keySetId.length); |
| 295 | return translateStatus(mObj->mDrm->restoreKeys(*iter, keySet)); |
| 296 | } |
| 297 | |
| 298 | mediadrm_status_t AMediaDrm_removeKeys(AMediaDrm *mObj, const AMediaDrmSessionId &keySetId) { |
| 299 | if (!mObj || mObj->mDrm == NULL) { |
| 300 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 301 | } |
| 302 | List<idvec_t>::iterator iter; |
| 303 | status_t status; |
| 304 | if (!findId(mObj, keySetId, iter)) { |
| 305 | Vector<uint8_t> keySet; |
| 306 | keySet.appendArray(keySetId.ptr, keySetId.length); |
| 307 | status = mObj->mDrm->removeKeys(keySet); |
| 308 | } else { |
| 309 | status = mObj->mDrm->removeKeys(*iter); |
| 310 | mObj->mIds.erase(iter); |
| 311 | } |
| 312 | return translateStatus(status); |
| 313 | } |
| 314 | |
| 315 | mediadrm_status_t AMediaDrm_queryKeyStatus(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 316 | AMediaDrmKeyValue *keyValuePairs, size_t &numPairs) { |
| 317 | |
| 318 | if (!mObj || mObj->mDrm == NULL) { |
| 319 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 320 | } |
| 321 | List<idvec_t>::iterator iter; |
| 322 | if (!findId(mObj, sessionId, iter)) { |
| 323 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 324 | } |
| 325 | |
| 326 | status_t status = mObj->mDrm->queryKeyStatus(*iter, mObj->mQueryResults); |
| 327 | if (status != OK) { |
| 328 | numPairs = 0; |
| 329 | return translateStatus(status); |
| 330 | } |
| 331 | |
| 332 | if (mObj->mQueryResults.size() > numPairs) { |
| 333 | numPairs = mObj->mQueryResults.size(); |
| 334 | return MEDIADRM_SHORT_BUFFER; |
| 335 | } |
| 336 | |
| 337 | for (size_t i = 0; i < mObj->mQueryResults.size(); i++) { |
| 338 | keyValuePairs[i].mKey = mObj->mQueryResults.keyAt(i).string(); |
| 339 | keyValuePairs[i].mValue = mObj->mQueryResults.keyAt(i).string(); |
| 340 | } |
| 341 | numPairs = mObj->mQueryResults.size(); |
| 342 | return MEDIADRM_OK; |
| 343 | } |
| 344 | |
| 345 | mediadrm_status_t AMediaDrm_getProvisionRequest(AMediaDrm *mObj, const uint8_t *&provisionRequest, |
| 346 | size_t &provisionRequestSize, const char *&serverUrl) { |
| 347 | if (!mObj || mObj->mDrm == NULL) { |
| 348 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 349 | } |
| 350 | if (!provisionRequestSize || !serverUrl) { |
| 351 | return MEDIADRM_INVALID_PARAMETER_ERROR; |
| 352 | } |
| 353 | |
| 354 | status_t status = mObj->mDrm->getProvisionRequest(String8(""), String8(""), |
| 355 | mObj->mProvisionRequest, mObj->mProvisionUrl); |
| 356 | if (status != OK) { |
| 357 | return translateStatus(status); |
| 358 | } else { |
| 359 | provisionRequest = mObj->mProvisionRequest.array(); |
| 360 | provisionRequestSize = mObj->mProvisionRequest.size(); |
| 361 | serverUrl = mObj->mProvisionUrl.string(); |
| 362 | } |
| 363 | return MEDIADRM_OK; |
| 364 | } |
| 365 | |
| 366 | mediadrm_status_t AMediaDrm_provideProvisionResponse(AMediaDrm *mObj, |
| 367 | const uint8_t *response, size_t responseSize) { |
| 368 | if (!mObj || mObj->mDrm == NULL) { |
| 369 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 370 | } |
| 371 | if (!response || !responseSize) { |
| 372 | return MEDIADRM_INVALID_PARAMETER_ERROR; |
| 373 | } |
| 374 | |
| 375 | Vector<uint8_t> mdResponse; |
| 376 | mdResponse.appendArray(response, responseSize); |
| 377 | |
| 378 | Vector<uint8_t> unused; |
| 379 | return translateStatus(mObj->mDrm->provideProvisionResponse(mdResponse, unused, unused)); |
| 380 | } |
| 381 | |
| 382 | mediadrm_status_t AMediaDrm_getSecureStops(AMediaDrm *mObj, |
| 383 | AMediaDrmSecureStop *secureStops, size_t &numSecureStops) { |
| 384 | |
| 385 | if (!mObj || mObj->mDrm == NULL) { |
| 386 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 387 | } |
| 388 | status_t status = mObj->mDrm->getSecureStops(mObj->mSecureStops); |
| 389 | if (status != OK) { |
| 390 | numSecureStops = 0; |
| 391 | return translateStatus(status); |
| 392 | } |
| 393 | if (numSecureStops < mObj->mSecureStops.size()) { |
| 394 | return MEDIADRM_SHORT_BUFFER; |
| 395 | } |
| 396 | List<Vector<uint8_t> >::iterator iter = mObj->mSecureStops.begin(); |
| 397 | size_t i = 0; |
| 398 | while (iter != mObj->mSecureStops.end()) { |
| 399 | secureStops[i].ptr = iter->array(); |
| 400 | secureStops[i].length = iter->size(); |
| 401 | ++iter; |
| 402 | ++i; |
| 403 | } |
| 404 | numSecureStops = mObj->mSecureStops.size(); |
| 405 | return MEDIADRM_OK; |
| 406 | } |
| 407 | |
| 408 | mediadrm_status_t AMediaDrm_releaseSecureStops(AMediaDrm *mObj, |
| 409 | const AMediaDrmSecureStop &ssRelease) { |
| 410 | |
| 411 | if (!mObj || mObj->mDrm == NULL) { |
| 412 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 413 | } |
| 414 | |
| 415 | Vector<uint8_t> release; |
| 416 | release.appendArray(ssRelease.ptr, ssRelease.length); |
| 417 | return translateStatus(mObj->mDrm->releaseSecureStops(release)); |
| 418 | } |
| 419 | |
| 420 | |
| 421 | mediadrm_status_t AMediaDrm_getPropertyString(AMediaDrm *mObj, const char *propertyName, |
| 422 | const char *&propertyValue) { |
| 423 | |
| 424 | if (!mObj || mObj->mDrm == NULL) { |
| 425 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 426 | } |
| 427 | |
| 428 | status_t status = mObj->mDrm->getPropertyString(String8(propertyName), |
| 429 | mObj->mPropertyString); |
| 430 | |
| 431 | if (status == OK) { |
| 432 | propertyValue = mObj->mPropertyString.string(); |
| 433 | } else { |
| 434 | propertyValue = NULL; |
| 435 | } |
| 436 | return translateStatus(status); |
| 437 | } |
| 438 | |
| 439 | mediadrm_status_t AMediaDrm_getPropertyByteArray(AMediaDrm *mObj, |
| 440 | const char *propertyName, AMediaDrmByteArray &propertyValue) { |
| 441 | if (!mObj || mObj->mDrm == NULL) { |
| 442 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 443 | } |
| 444 | |
| 445 | status_t status = mObj->mDrm->getPropertyByteArray(String8(propertyName), |
| 446 | mObj->mPropertyByteArray); |
| 447 | |
| 448 | if (status == OK) { |
| 449 | propertyValue.ptr = mObj->mPropertyByteArray.array(); |
| 450 | propertyValue.length = mObj->mPropertyByteArray.size(); |
| 451 | } else { |
| 452 | propertyValue.ptr = NULL; |
| 453 | propertyValue.length = 0; |
| 454 | } |
| 455 | return translateStatus(status); |
| 456 | } |
| 457 | |
| 458 | mediadrm_status_t AMediaDrm_setPropertyString(AMediaDrm *mObj, |
| 459 | const char *propertyName, const char *value) { |
| 460 | if (!mObj || mObj->mDrm == NULL) { |
| 461 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 462 | } |
| 463 | |
| 464 | return translateStatus(mObj->mDrm->setPropertyString(String8(propertyName), |
| 465 | String8(value))); |
| 466 | } |
| 467 | |
| 468 | mediadrm_status_t AMediaDrm_setPropertyByteArray(AMediaDrm *mObj, |
| 469 | const char *propertyName, const uint8_t *value, size_t valueSize) { |
| 470 | |
| 471 | Vector<uint8_t> byteArray; |
| 472 | byteArray.appendArray(value, valueSize); |
| 473 | |
| 474 | return translateStatus(mObj->mDrm->getPropertyByteArray(String8(propertyName), |
| 475 | byteArray)); |
| 476 | } |
| 477 | |
| 478 | |
| 479 | static mediadrm_status_t encrypt_decrypt_common(AMediaDrm *mObj, |
| 480 | const AMediaDrmSessionId &sessionId, |
| 481 | const char *cipherAlgorithm, uint8_t *keyId, uint8_t *iv, |
| 482 | const uint8_t *input, uint8_t *output, size_t dataSize, bool encrypt) { |
| 483 | |
| 484 | if (!mObj || mObj->mDrm == NULL) { |
| 485 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 486 | } |
| 487 | List<idvec_t>::iterator iter; |
| 488 | if (!findId(mObj, sessionId, iter)) { |
| 489 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 490 | } |
| 491 | |
| 492 | status_t status = mObj->mDrm->setCipherAlgorithm(*iter, String8(cipherAlgorithm)); |
| 493 | if (status != OK) { |
| 494 | return translateStatus(status); |
| 495 | } |
| 496 | |
| 497 | Vector<uint8_t> keyIdVec; |
| 498 | const size_t kKeyIdSize = 16; |
| 499 | keyIdVec.appendArray(keyId, kKeyIdSize); |
| 500 | |
| 501 | Vector<uint8_t> inputVec; |
| 502 | inputVec.appendArray(input, dataSize); |
| 503 | |
| 504 | Vector<uint8_t> ivVec; |
| 505 | const size_t kIvSize = 16; |
| 506 | ivVec.appendArray(iv, kIvSize); |
| 507 | |
| 508 | Vector<uint8_t> outputVec; |
| 509 | if (encrypt) { |
| 510 | status_t status = mObj->mDrm->encrypt(*iter, keyIdVec, inputVec, ivVec, outputVec); |
| 511 | } else { |
| 512 | status_t status = mObj->mDrm->decrypt(*iter, keyIdVec, inputVec, ivVec, outputVec); |
| 513 | } |
| 514 | if (status == OK) { |
| 515 | memcpy(output, outputVec.array(), outputVec.size()); |
| 516 | } |
| 517 | return translateStatus(status); |
| 518 | } |
| 519 | |
| 520 | mediadrm_status_t AMediaDrm_encrypt(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 521 | const char *cipherAlgorithm, uint8_t *keyId, uint8_t *iv, |
| 522 | const uint8_t *input, uint8_t *output, size_t dataSize) { |
| 523 | return encrypt_decrypt_common(mObj, sessionId, cipherAlgorithm, keyId, iv, |
| 524 | input, output, dataSize, true); |
| 525 | } |
| 526 | |
| 527 | mediadrm_status_t AMediaDrm_decrypt(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 528 | const char *cipherAlgorithm, uint8_t *keyId, uint8_t *iv, |
| 529 | const uint8_t *input, uint8_t *output, size_t dataSize) { |
| 530 | return encrypt_decrypt_common(mObj, sessionId, cipherAlgorithm, keyId, iv, |
| 531 | input, output, dataSize, false); |
| 532 | } |
| 533 | |
| 534 | mediadrm_status_t AMediaDrm_sign(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 535 | const char *macAlgorithm, uint8_t *keyId, uint8_t *message, size_t messageSize, |
| 536 | uint8_t *signature, size_t *signatureSize) { |
| 537 | |
| 538 | if (!mObj || mObj->mDrm == NULL) { |
| 539 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 540 | } |
| 541 | List<idvec_t>::iterator iter; |
| 542 | if (!findId(mObj, sessionId, iter)) { |
| 543 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 544 | } |
| 545 | |
| 546 | status_t status = mObj->mDrm->setMacAlgorithm(*iter, String8(macAlgorithm)); |
| 547 | if (status != OK) { |
| 548 | return translateStatus(status); |
| 549 | } |
| 550 | |
| 551 | Vector<uint8_t> keyIdVec; |
| 552 | const size_t kKeyIdSize = 16; |
| 553 | keyIdVec.appendArray(keyId, kKeyIdSize); |
| 554 | |
| 555 | Vector<uint8_t> messageVec; |
| 556 | messageVec.appendArray(message, messageSize); |
| 557 | |
| 558 | Vector<uint8_t> signatureVec; |
| 559 | status = mObj->mDrm->sign(*iter, keyIdVec, messageVec, signatureVec); |
| 560 | if (signatureVec.size() > *signatureSize) { |
| 561 | return MEDIADRM_SHORT_BUFFER; |
| 562 | } |
| 563 | if (status == OK) { |
| 564 | memcpy(signature, signatureVec.array(), signatureVec.size()); |
| 565 | } |
| 566 | return translateStatus(status); |
| 567 | } |
| 568 | |
| 569 | mediadrm_status_t AMediaDrm_verify(AMediaDrm *mObj, const AMediaDrmSessionId &sessionId, |
| 570 | const char *macAlgorithm, uint8_t *keyId, const uint8_t *message, size_t messageSize, |
| 571 | const uint8_t *signature, size_t signatureSize) { |
| 572 | |
| 573 | if (!mObj || mObj->mDrm == NULL) { |
| 574 | return MEDIADRM_INVALID_OBJECT_ERROR; |
| 575 | } |
| 576 | List<idvec_t>::iterator iter; |
| 577 | if (!findId(mObj, sessionId, iter)) { |
| 578 | return MEDIADRM_SESSION_NOT_OPENED_ERROR; |
| 579 | } |
| 580 | |
| 581 | status_t status = mObj->mDrm->setMacAlgorithm(*iter, String8(macAlgorithm)); |
| 582 | if (status != OK) { |
| 583 | return translateStatus(status); |
| 584 | } |
| 585 | |
| 586 | Vector<uint8_t> keyIdVec; |
| 587 | const size_t kKeyIdSize = 16; |
| 588 | keyIdVec.appendArray(keyId, kKeyIdSize); |
| 589 | |
| 590 | Vector<uint8_t> messageVec; |
| 591 | messageVec.appendArray(message, messageSize); |
| 592 | |
| 593 | Vector<uint8_t> signatureVec; |
| 594 | signatureVec.appendArray(signature, signatureSize); |
| 595 | |
| 596 | bool match; |
| 597 | status = mObj->mDrm->verify(*iter, keyIdVec, messageVec, signatureVec, match); |
| 598 | if (status == OK) { |
| 599 | return match ? MEDIADRM_OK : MEDIADRM_VERIFY_FAILED; |
| 600 | } |
| 601 | return translateStatus(status); |
| 602 | } |
| 603 | |
| 604 | } // extern "C" |
| 605 | |