Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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_TAG "MtpServerJNI" |
| 18 | #include "utils/Log.h" |
| 19 | |
| 20 | #include <stdio.h> |
| 21 | #include <assert.h> |
| 22 | #include <limits.h> |
| 23 | #include <unistd.h> |
| 24 | #include <fcntl.h> |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 25 | #include <sys/ioctl.h> |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 26 | #include <utils/threads.h> |
| 27 | |
Mike Lockwood | 602bebd | 2010-09-02 09:58:48 -0400 | [diff] [blame] | 28 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 29 | #include <linux/usb/f_mtp.h> |
Mike Lockwood | 602bebd | 2010-09-02 09:58:48 -0400 | [diff] [blame] | 30 | #endif |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 31 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 32 | #include "jni.h" |
| 33 | #include "JNIHelp.h" |
| 34 | #include "android_runtime/AndroidRuntime.h" |
Mike Lockwood | dad6927 | 2010-07-02 15:15:07 -0400 | [diff] [blame] | 35 | #include "private/android_filesystem_config.h" |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 36 | |
| 37 | #include "MtpServer.h" |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 38 | #include "MtpStorage.h" |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 39 | |
Mike Lockwood | 81ea83d | 2010-06-30 17:49:41 -0400 | [diff] [blame] | 40 | using namespace android; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 41 | |
| 42 | // ---------------------------------------------------------------------------- |
| 43 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 44 | // in android_mtp_MtpDatabase.cpp |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 45 | extern MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 46 | |
| 47 | // ---------------------------------------------------------------------------- |
| 48 | |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 49 | #ifdef HAVE_ANDROID_OS |
| 50 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 51 | static bool ExceptionCheck(void* env) |
| 52 | { |
| 53 | return ((JNIEnv *)env)->ExceptionCheck(); |
| 54 | } |
| 55 | |
| 56 | class MtpThread : public Thread { |
| 57 | private: |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 58 | MtpDatabase* mDatabase; |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 59 | MtpServer* mServer; |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 60 | MtpStorage* mStorage; |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 61 | Mutex mMutex; |
| 62 | bool mUsePtp; |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 63 | bool mLocked; |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 64 | int mFd; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 65 | |
| 66 | public: |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 67 | MtpThread(MtpDatabase* database, MtpStorage* storage) |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 68 | : mDatabase(database), |
Mike Lockwood | 23ee42f | 2010-08-03 15:17:55 -0400 | [diff] [blame] | 69 | mServer(NULL), |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 70 | mStorage(storage), |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 71 | mUsePtp(false), |
| 72 | mLocked(false), |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 73 | mFd(-1) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 74 | { |
| 75 | } |
| 76 | |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 77 | virtual ~MtpThread() { |
| 78 | delete mStorage; |
| 79 | } |
| 80 | |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 81 | void setPtpMode(bool usePtp) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 82 | mMutex.lock(); |
| 83 | mUsePtp = usePtp; |
| 84 | mMutex.unlock(); |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 85 | } |
| 86 | |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 87 | void setLocked(bool locked) { |
| 88 | mMutex.lock(); |
| 89 | if (locked != mLocked) { |
| 90 | if (mServer) { |
| 91 | if (locked) |
| 92 | mServer->removeStorage(mStorage); |
| 93 | else |
| 94 | mServer->addStorage(mStorage); |
| 95 | } |
| 96 | mLocked = locked; |
| 97 | } |
| 98 | mMutex.unlock(); |
| 99 | } |
| 100 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 101 | virtual bool threadLoop() { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 102 | mMutex.lock(); |
| 103 | mFd = open("/dev/mtp_usb", O_RDWR); |
| 104 | if (mFd >= 0) { |
| 105 | ioctl(mFd, MTP_SET_INTERFACE_MODE, |
| 106 | (mUsePtp ? MTP_INTERFACE_MODE_PTP : MTP_INTERFACE_MODE_MTP)); |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 107 | |
| 108 | mServer = new MtpServer(mFd, mDatabase, AID_MEDIA_RW, 0664, 0775); |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 109 | if (!mLocked) |
| 110 | mServer->addStorage(mStorage); |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 111 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 112 | mMutex.unlock(); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 113 | mServer->run(); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 114 | mMutex.lock(); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 115 | |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 116 | close(mFd); |
| 117 | mFd = -1; |
| 118 | delete mServer; |
| 119 | mServer = NULL; |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 120 | } else { |
| 121 | LOGE("could not open MTP driver, errno: %d", errno); |
| 122 | } |
| 123 | mMutex.unlock(); |
| 124 | // delay a bit before retrying to avoid excessive spin |
| 125 | if (!exitPending()) { |
| 126 | sleep(1); |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 127 | } |
Mike Lockwood | 2b2bff5 | 2010-08-18 12:32:26 -0400 | [diff] [blame] | 128 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 129 | return true; |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 130 | } |
| 131 | |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 132 | void sendObjectAdded(MtpObjectHandle handle) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 133 | mMutex.lock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 134 | if (mServer) |
| 135 | mServer->sendObjectAdded(handle); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 136 | mMutex.unlock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | void sendObjectRemoved(MtpObjectHandle handle) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 140 | mMutex.lock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 141 | if (mServer) |
| 142 | mServer->sendObjectRemoved(handle); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 143 | mMutex.unlock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 144 | } |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 145 | }; |
| 146 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 147 | // This smart pointer is necessary for preventing MtpThread from exiting too early |
| 148 | static sp<MtpThread> sThread; |
| 149 | |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 150 | #endif // HAVE_ANDROID_OS |
| 151 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 152 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 153 | android_mtp_MtpServer_setup(JNIEnv *env, jobject thiz, jobject javaDatabase, |
Mike Lockwood | 7f36b19 | 2010-12-12 12:17:43 -0800 | [diff] [blame] | 154 | jstring storagePath, jlong reserveSpace) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 155 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 156 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 157 | MtpDatabase* database = getMtpDatabase(env, javaDatabase); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 158 | const char *storagePathStr = env->GetStringUTFChars(storagePath, NULL); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 159 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 160 | // create the thread and assign it to the smart pointer |
Mike Lockwood | 467ca0d | 2011-02-18 09:07:14 -0500 | [diff] [blame] | 161 | MtpStorage* storage = new MtpStorage(MTP_FIRST_STORAGE_ID, storagePathStr, reserveSpace); |
| 162 | sThread = new MtpThread(database, storage); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 163 | |
| 164 | env->ReleaseStringUTFChars(storagePath, storagePathStr); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 165 | #endif |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 169 | android_mtp_MtpServer_start(JNIEnv *env, jobject thiz) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 170 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 171 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 172 | MtpThread *thread = sThread.get(); |
| 173 | if (thread) |
| 174 | thread->run("MtpThread"); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 175 | #endif // HAVE_ANDROID_OS |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 179 | android_mtp_MtpServer_stop(JNIEnv *env, jobject thiz) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 180 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 181 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 182 | MtpThread *thread = sThread.get(); |
| 183 | if (thread) { |
| 184 | thread->requestExitAndWait(); |
| 185 | sThread = NULL; |
| 186 | } |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 187 | #endif |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 188 | } |
| 189 | |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 190 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 191 | android_mtp_MtpServer_send_object_added(JNIEnv *env, jobject thiz, jint handle) |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 192 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 193 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 194 | MtpThread *thread = sThread.get(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 195 | if (thread) |
| 196 | thread->sendObjectAdded(handle); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 197 | #endif |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 201 | android_mtp_MtpServer_send_object_removed(JNIEnv *env, jobject thiz, jint handle) |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 202 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 203 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 204 | MtpThread *thread = sThread.get(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 205 | if (thread) |
| 206 | thread->sendObjectRemoved(handle); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 207 | #endif |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 208 | } |
| 209 | |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 210 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 211 | android_mtp_MtpServer_set_ptp_mode(JNIEnv *env, jobject thiz, jboolean usePtp) |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 212 | { |
| 213 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 214 | MtpThread *thread = sThread.get(); |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 215 | if (thread) |
| 216 | thread->setPtpMode(usePtp); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 217 | #endif |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 218 | } |
| 219 | |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 220 | static void |
| 221 | android_mtp_MtpServer_set_locked(JNIEnv *env, jobject thiz, jboolean locked) |
| 222 | { |
| 223 | #ifdef HAVE_ANDROID_OS |
| 224 | MtpThread *thread = sThread.get(); |
| 225 | if (thread) |
| 226 | thread->setLocked(locked); |
| 227 | #endif |
| 228 | } |
| 229 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 230 | // ---------------------------------------------------------------------------- |
| 231 | |
| 232 | static JNINativeMethod gMethods[] = { |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 233 | {"native_setup", "(Landroid/mtp/MtpDatabase;Ljava/lang/String;J)V", |
| 234 | (void *)android_mtp_MtpServer_setup}, |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 235 | {"native_start", "()V", (void *)android_mtp_MtpServer_start}, |
| 236 | {"native_stop", "()V", (void *)android_mtp_MtpServer_stop}, |
| 237 | {"native_send_object_added", "(I)V", (void *)android_mtp_MtpServer_send_object_added}, |
| 238 | {"native_send_object_removed", "(I)V", (void *)android_mtp_MtpServer_send_object_removed}, |
| 239 | {"native_set_ptp_mode", "(Z)V", (void *)android_mtp_MtpServer_set_ptp_mode}, |
Mike Lockwood | 66e57f6 | 2011-02-18 13:24:01 -0500 | [diff] [blame^] | 240 | {"native_set_locked", "(Z)V", (void *)android_mtp_MtpServer_set_locked}, |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 241 | }; |
| 242 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 243 | static const char* const kClassPathName = "android/mtp/MtpServer"; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 244 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 245 | int register_android_mtp_MtpServer(JNIEnv *env) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 246 | { |
| 247 | jclass clazz; |
| 248 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 249 | clazz = env->FindClass("android/mtp/MtpServer"); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 250 | if (clazz == NULL) { |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 251 | LOGE("Can't find android/mtp/MtpServer"); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 252 | return -1; |
| 253 | } |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 254 | |
| 255 | return AndroidRuntime::registerNativeMethods(env, |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 256 | "android/mtp/MtpServer", gMethods, NELEM(gMethods)); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 257 | } |