/* ** ** Copyright 2008, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** ** http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ #include <stdint.h> #include <sys/types.h> #define LOG_TAG "KeystoreService" #include <utils/Log.h> #include <binder/Parcel.h> #include <binder/IPCThreadState.h> #include <binder/IServiceManager.h> #include <keystore/IKeystoreService.h> namespace android { class BpKeystoreService: public BpInterface<IKeystoreService> { public: BpKeystoreService(const sp<IBinder>& impl) : BpInterface<IKeystoreService>(impl) { } // test ping virtual int32_t test() { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); status_t status = remote()->transact(BnKeystoreService::TEST, data, &reply); if (status != NO_ERROR) { ALOGD("test() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("test() caught exception %d\n", err); return -1; } return ret; } virtual int32_t get(const String16& name, uint8_t** item, size_t* itemLength) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); status_t status = remote()->transact(BnKeystoreService::GET, data, &reply); if (status != NO_ERROR) { ALOGD("get() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); ssize_t len = reply.readInt32(); if (len >= 0 && (size_t) len <= reply.dataAvail()) { size_t ulen = (size_t) len; const void* buf = reply.readInplace(ulen); *item = (uint8_t*) malloc(ulen); if (*item != NULL) { memcpy(*item, buf, ulen); *itemLength = ulen; } else { ALOGE("out of memory allocating output array in get"); *itemLength = 0; } } else { *itemLength = 0; } if (err < 0) { ALOGD("get() caught exception %d\n", err); return -1; } return 0; } virtual int32_t insert(const String16& name, const uint8_t* item, size_t itemLength, int uid, int32_t flags) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(itemLength); void* buf = data.writeInplace(itemLength); memcpy(buf, item, itemLength); data.writeInt32(uid); data.writeInt32(flags); status_t status = remote()->transact(BnKeystoreService::INSERT, data, &reply); if (status != NO_ERROR) { ALOGD("import() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("import() caught exception %d\n", err); return -1; } return ret; } virtual int32_t del(const String16& name, int uid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(uid); status_t status = remote()->transact(BnKeystoreService::DEL, data, &reply); if (status != NO_ERROR) { ALOGD("del() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("del() caught exception %d\n", err); return -1; } return ret; } virtual int32_t exist(const String16& name, int uid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(uid); status_t status = remote()->transact(BnKeystoreService::EXIST, data, &reply); if (status != NO_ERROR) { ALOGD("exist() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("exist() caught exception %d\n", err); return -1; } return ret; } virtual int32_t saw(const String16& name, int uid, Vector<String16>* matches) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(uid); status_t status = remote()->transact(BnKeystoreService::SAW, data, &reply); if (status != NO_ERROR) { ALOGD("saw() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t numMatches = reply.readInt32(); for (int32_t i = 0; i < numMatches; i++) { matches->push(reply.readString16()); } int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("saw() caught exception %d\n", err); return -1; } return ret; } virtual int32_t reset() { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); status_t status = remote()->transact(BnKeystoreService::RESET, data, &reply); if (status != NO_ERROR) { ALOGD("reset() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("reset() caught exception %d\n", err); return -1; } return ret; } virtual int32_t password(const String16& password) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(password); status_t status = remote()->transact(BnKeystoreService::PASSWORD, data, &reply); if (status != NO_ERROR) { ALOGD("password() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("password() caught exception %d\n", err); return -1; } return ret; } virtual int32_t lock() { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); status_t status = remote()->transact(BnKeystoreService::LOCK, data, &reply); if (status != NO_ERROR) { ALOGD("lock() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("lock() caught exception %d\n", err); return -1; } return ret; } virtual int32_t unlock(const String16& password) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(password); status_t status = remote()->transact(BnKeystoreService::UNLOCK, data, &reply); if (status != NO_ERROR) { ALOGD("unlock() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("unlock() caught exception %d\n", err); return -1; } return ret; } virtual int32_t zero() { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); status_t status = remote()->transact(BnKeystoreService::ZERO, data, &reply); if (status != NO_ERROR) { ALOGD("zero() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("zero() caught exception %d\n", err); return -1; } return ret; } virtual int32_t generate(const String16& name, int uid, int32_t flags) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(uid); data.writeInt32(flags); status_t status = remote()->transact(BnKeystoreService::GENERATE, data, &reply); if (status != NO_ERROR) { ALOGD("generate() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("generate() caught exception %d\n", err); return -1; } return ret; } virtual int32_t import(const String16& name, const uint8_t* key, size_t keyLength, int uid, int flags) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(keyLength); void* buf = data.writeInplace(keyLength); memcpy(buf, key, keyLength); data.writeInt32(uid); data.writeInt32(flags); status_t status = remote()->transact(BnKeystoreService::IMPORT, data, &reply); if (status != NO_ERROR) { ALOGD("import() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("import() caught exception %d\n", err); return -1; } return ret; } virtual int32_t sign(const String16& name, const uint8_t* in, size_t inLength, uint8_t** out, size_t* outLength) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(inLength); void* buf = data.writeInplace(inLength); memcpy(buf, in, inLength); status_t status = remote()->transact(BnKeystoreService::SIGN, data, &reply); if (status != NO_ERROR) { ALOGD("import() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); ssize_t len = reply.readInt32(); if (len >= 0 && (size_t) len <= reply.dataAvail()) { size_t ulen = (size_t) len; const void* outBuf = reply.readInplace(ulen); *out = (uint8_t*) malloc(ulen); if (*out != NULL) { memcpy((void*) *out, outBuf, ulen); *outLength = ulen; } else { ALOGE("out of memory allocating output array in sign"); *outLength = 0; } } else { *outLength = 0; } if (err < 0) { ALOGD("import() caught exception %d\n", err); return -1; } return 0; } virtual int32_t verify(const String16& name, const uint8_t* in, size_t inLength, const uint8_t* signature, size_t signatureLength) { Parcel data, reply; void* buf; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(inLength); buf = data.writeInplace(inLength); memcpy(buf, in, inLength); data.writeInt32(signatureLength); buf = data.writeInplace(signatureLength); memcpy(buf, signature, signatureLength); status_t status = remote()->transact(BnKeystoreService::VERIFY, data, &reply); if (status != NO_ERROR) { ALOGD("verify() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("verify() caught exception %d\n", err); return -1; } return ret; } virtual int32_t get_pubkey(const String16& name, uint8_t** pubkey, size_t* pubkeyLength) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); status_t status = remote()->transact(BnKeystoreService::GET_PUBKEY, data, &reply); if (status != NO_ERROR) { ALOGD("get_pubkey() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); ssize_t len = reply.readInt32(); if (len >= 0 && (size_t) len <= reply.dataAvail()) { size_t ulen = (size_t) len; const void* buf = reply.readInplace(ulen); *pubkey = (uint8_t*) malloc(ulen); if (*pubkey != NULL) { memcpy(*pubkey, buf, ulen); *pubkeyLength = ulen; } else { ALOGE("out of memory allocating output array in get_pubkey"); *pubkeyLength = 0; } } else { *pubkeyLength = 0; } if (err < 0) { ALOGD("get_pubkey() caught exception %d\n", err); return -1; } return 0; } virtual int32_t del_key(const String16& name, int uid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(uid); status_t status = remote()->transact(BnKeystoreService::DEL_KEY, data, &reply); if (status != NO_ERROR) { ALOGD("del_key() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("del_key() caught exception %d\n", err); return -1; } return ret; } virtual int32_t grant(const String16& name, int32_t granteeUid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(granteeUid); status_t status = remote()->transact(BnKeystoreService::GRANT, data, &reply); if (status != NO_ERROR) { ALOGD("grant() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("grant() caught exception %d\n", err); return -1; } return ret; } virtual int32_t ungrant(const String16& name, int32_t granteeUid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); data.writeInt32(granteeUid); status_t status = remote()->transact(BnKeystoreService::UNGRANT, data, &reply); if (status != NO_ERROR) { ALOGD("ungrant() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("ungrant() caught exception %d\n", err); return -1; } return ret; } int64_t getmtime(const String16& name) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(name); status_t status = remote()->transact(BnKeystoreService::GETMTIME, data, &reply); if (status != NO_ERROR) { ALOGD("getmtime() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int64_t ret = reply.readInt64(); if (err < 0) { ALOGD("getmtime() caught exception %d\n", err); return -1; } return ret; } virtual int32_t duplicate(const String16& srcKey, int32_t srcUid, const String16& destKey, int32_t destUid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeString16(srcKey); data.writeInt32(srcUid); data.writeString16(destKey); data.writeInt32(destUid); status_t status = remote()->transact(BnKeystoreService::DUPLICATE, data, &reply); if (status != NO_ERROR) { ALOGD("duplicate() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("duplicate() caught exception %d\n", err); return -1; } return ret; } virtual int32_t is_hardware_backed() { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); status_t status = remote()->transact(BnKeystoreService::IS_HARDWARE_BACKED, data, &reply); if (status != NO_ERROR) { ALOGD("is_hardware_backed() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("is_hardware_backed() caught exception %d\n", err); return -1; } return ret; } virtual int32_t clear_uid(int64_t uid) { Parcel data, reply; data.writeInterfaceToken(IKeystoreService::getInterfaceDescriptor()); data.writeInt64(uid); status_t status = remote()->transact(BnKeystoreService::CLEAR_UID, data, &reply); if (status != NO_ERROR) { ALOGD("clear_uid() could not contact remote: %d\n", status); return -1; } int32_t err = reply.readExceptionCode(); int32_t ret = reply.readInt32(); if (err < 0) { ALOGD("clear_uid() caught exception %d\n", err); return -1; } return ret; } }; IMPLEMENT_META_INTERFACE(KeystoreService, "android.security.keystore"); // ---------------------------------------------------------------------- status_t BnKeystoreService::onTransact( uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { switch(code) { case TEST: { CHECK_INTERFACE(IKeystoreService, data, reply); int32_t ret = test(); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case GET: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); void* out = NULL; size_t outSize = 0; int32_t ret = get(name, (uint8_t**) &out, &outSize); reply->writeNoException(); if (ret == 1) { reply->writeInt32(outSize); void* buf = reply->writeInplace(outSize); memcpy(buf, out, outSize); free(out); } else { reply->writeInt32(-1); } return NO_ERROR; } break; case INSERT: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); ssize_t inSize = data.readInt32(); const void* in; if (inSize >= 0 && (size_t) inSize <= data.dataAvail()) { in = data.readInplace(inSize); } else { in = NULL; inSize = 0; } int uid = data.readInt32(); int32_t flags = data.readInt32(); int32_t ret = insert(name, (const uint8_t*) in, (size_t) inSize, uid, flags); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case DEL: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int uid = data.readInt32(); int32_t ret = del(name, uid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case EXIST: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int uid = data.readInt32(); int32_t ret = exist(name, uid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case SAW: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int uid = data.readInt32(); Vector<String16> matches; int32_t ret = saw(name, uid, &matches); reply->writeNoException(); reply->writeInt32(matches.size()); Vector<String16>::const_iterator it = matches.begin(); for (; it != matches.end(); ++it) { reply->writeString16(*it); } reply->writeInt32(ret); return NO_ERROR; } break; case RESET: { CHECK_INTERFACE(IKeystoreService, data, reply); int32_t ret = reset(); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case PASSWORD: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 pass = data.readString16(); int32_t ret = password(pass); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case LOCK: { CHECK_INTERFACE(IKeystoreService, data, reply); int32_t ret = lock(); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case UNLOCK: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 pass = data.readString16(); int32_t ret = unlock(pass); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case ZERO: { CHECK_INTERFACE(IKeystoreService, data, reply); int32_t ret = zero(); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case GENERATE: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int uid = data.readInt32(); int32_t flags = data.readInt32(); int32_t ret = generate(name, uid, flags); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case IMPORT: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); ssize_t inSize = data.readInt32(); const void* in; if (inSize >= 0 && (size_t) inSize <= data.dataAvail()) { in = data.readInplace(inSize); } else { in = NULL; inSize = 0; } int uid = data.readInt32(); int32_t flags = data.readInt32(); int32_t ret = import(name, (const uint8_t*) in, (size_t) inSize, uid, flags); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case SIGN: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); ssize_t inSize = data.readInt32(); const void* in; if (inSize >= 0 && (size_t) inSize <= data.dataAvail()) { in = data.readInplace(inSize); } else { in = NULL; inSize = 0; } void* out = NULL; size_t outSize = 0; int32_t ret = sign(name, (const uint8_t*) in, (size_t) inSize, (uint8_t**) &out, &outSize); reply->writeNoException(); if (outSize > 0 && out != NULL) { reply->writeInt32(outSize); void* buf = reply->writeInplace(outSize); memcpy(buf, out, outSize); free(out); } else { reply->writeInt32(-1); } reply->writeInt32(ret); return NO_ERROR; } break; case VERIFY: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); ssize_t inSize = data.readInt32(); const void* in; if (inSize >= 0 && (size_t) inSize <= data.dataAvail()) { in = data.readInplace(inSize); } else { in = NULL; inSize = 0; } ssize_t sigSize = data.readInt32(); const void* sig; if (sigSize >= 0 && (size_t) sigSize <= data.dataAvail()) { sig = data.readInplace(sigSize); } else { sig = NULL; sigSize = 0; } bool ret = verify(name, (const uint8_t*) in, (size_t) inSize, (const uint8_t*) sig, (size_t) sigSize); reply->writeNoException(); reply->writeInt32(ret ? 1 : 0); return NO_ERROR; } break; case GET_PUBKEY: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); void* out = NULL; size_t outSize = 0; int32_t ret = get_pubkey(name, (unsigned char**) &out, &outSize); reply->writeNoException(); if (outSize > 0 && out != NULL) { reply->writeInt32(outSize); void* buf = reply->writeInplace(outSize); memcpy(buf, out, outSize); free(out); } else { reply->writeInt32(-1); } reply->writeInt32(ret); return NO_ERROR; } break; case DEL_KEY: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int uid = data.readInt32(); int32_t ret = del_key(name, uid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case GRANT: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int32_t granteeUid = data.readInt32(); int32_t ret = grant(name, granteeUid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case UNGRANT: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int32_t granteeUid = data.readInt32(); int32_t ret = ungrant(name, granteeUid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case GETMTIME: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 name = data.readString16(); int64_t ret = getmtime(name); reply->writeNoException(); reply->writeInt64(ret); return NO_ERROR; } break; case DUPLICATE: { CHECK_INTERFACE(IKeystoreService, data, reply); String16 srcKey = data.readString16(); int32_t srcUid = data.readInt32(); String16 destKey = data.readString16(); int32_t destUid = data.readInt32(); int32_t ret = duplicate(srcKey, srcUid, destKey, destUid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } break; case IS_HARDWARE_BACKED: { CHECK_INTERFACE(IKeystoreService, data, reply); int32_t ret = is_hardware_backed(); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } case CLEAR_UID: { CHECK_INTERFACE(IKeystoreService, data, reply); int64_t uid = data.readInt64(); int32_t ret = clear_uid(uid); reply->writeNoException(); reply->writeInt32(ret); return NO_ERROR; } default: return BBinder::onTransact(code, data, reply, flags); } } // ---------------------------------------------------------------------------- }; // namespace android