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-rw-r--r--PREUPLOAD.cfg1
-rw-r--r--cmds/uinput/Android.bp18
-rw-r--r--cmds/uinput/MODULE_LICENSE_APACHE20
-rw-r--r--cmds/uinput/NOTICE190
-rw-r--r--cmds/uinput/README.md166
-rw-r--r--cmds/uinput/jni/Android.bp23
-rw-r--r--cmds/uinput/jni/com_android_commands_uinput_Device.cpp351
-rw-r--r--cmds/uinput/jni/com_android_commands_uinput_Device.h67
-rw-r--r--cmds/uinput/src/com/android/commands/uinput/Device.java232
-rw-r--r--cmds/uinput/src/com/android/commands/uinput/Event.java454
-rw-r--r--cmds/uinput/src/com/android/commands/uinput/InputAbsInfo.aidl26
-rw-r--r--cmds/uinput/src/com/android/commands/uinput/Uinput.java140
-rwxr-xr-xcmds/uinput/uinput9
13 files changed, 1677 insertions, 0 deletions
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 2fd2e33bbc37..fc5efc6e03ac 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -6,6 +6,7 @@ clang_format = true
clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp
cmds/hid/
cmds/input/
+ cmds/uinput/
core/jni/
libs/input/
services/core/jni/
diff --git a/cmds/uinput/Android.bp b/cmds/uinput/Android.bp
new file mode 100644
index 000000000000..0d7fed2a15c7
--- /dev/null
+++ b/cmds/uinput/Android.bp
@@ -0,0 +1,18 @@
+// Copyright 2020 The Android Open Source Project
+//
+
+java_binary {
+ name: "uinput",
+ wrapper: "uinput",
+ srcs: ["**/*.java",
+ ":uinputcommand_aidl"
+ ],
+ required: ["libuinputcommand_jni"],
+}
+
+filegroup {
+ name: "uinputcommand_aidl",
+ srcs: [
+ "src/com/android/commands/uinput/InputAbsInfo.aidl",
+ ],
+} \ No newline at end of file
diff --git a/cmds/uinput/MODULE_LICENSE_APACHE2 b/cmds/uinput/MODULE_LICENSE_APACHE2
new file mode 100644
index 000000000000..e69de29bb2d1
--- /dev/null
+++ b/cmds/uinput/MODULE_LICENSE_APACHE2
diff --git a/cmds/uinput/NOTICE b/cmds/uinput/NOTICE
new file mode 100644
index 000000000000..c5b1efa7aac7
--- /dev/null
+++ b/cmds/uinput/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2005-2008, 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.
+
+ 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.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
diff --git a/cmds/uinput/README.md b/cmds/uinput/README.md
new file mode 100644
index 000000000000..47e1dad9ccd6
--- /dev/null
+++ b/cmds/uinput/README.md
@@ -0,0 +1,166 @@
+# Usage
+## Two options to use the uinput command:
+### 1. Interactive through stdin:
+type `uinput -` into the terminal, then type/paste commands to send to the binary.
+Use Ctrl+D to signal end of stream to the binary (EOF).
+
+This mode can be also used from an app to send uinput events.
+For an example, see the cts test case at: [InputTestCase.java][2]
+
+When using another program to control uinput in interactive mode, registering a
+new input device (for example, a bluetooth joystick) should be the first step.
+After the device is added, you need to wait for the _onInputDeviceAdded_
+(see [InputDeviceListener][1]) notification before issuing commands
+to the device.
+Failure to do so will cause missed events and inconsistent behavior.
+
+### 2. Using a file as an input:
+type `uinput <filename>`, and the file will be used an an input to the binary.
+You must add a sufficient delay after a "register" command to ensure device
+is ready. The interactive mode is the recommended method of communicating
+with the uinput binary.
+
+All of the input commands should be in pseudo-JSON format as documented below.
+See examples [here][3].
+
+The file can have multiple commands one after the other (which is not strictly
+legal JSON format, as this would imply multiple root elements).
+
+## Command description
+
+1. `register`
+Register a new uinput device
+
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| id | integer | Device id |
+| command | string | Must be set to "register" |
+| name | string | Device name |
+| vid | 16-bit integer| Vendor id |
+| pid | 16-bit integer| Product id |
+| bus | string | Bus that device should use |
+| configuration | int array | uinput device configuration|
+| ff_effects_max| integer | ff_effects_max value |
+| abs_info | array | ABS axes information |
+
+Device ID is used for matching the subsequent commands to a specific device
+to avoid ambiguity when multiple devices are registered.
+
+Device bus is used to determine how the uinput device is connected to the host.
+The options are "usb" and "bluetooth".
+
+Device configuration is used to configure uinput device. "type" field provides the UI_SET_*
+control code, and data is a vector of control values to be sent to uinput device, depends on
+the control code.
+
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| type | integer | UI_SET_ control type |
+| data | int array | control values |
+
+Device ff_effects_max must be provided if FFBIT is set.
+
+Device abs_info fields are provided to set the device axes information. It is an array of below
+objects:
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| code | integer | Axis code |
+| info | object | ABS information object |
+
+ABS information object is defined as below:
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| value | integer | Latest reported value |
+| minimum | integer | Minimum value for the axis |
+| maximum | integer | Maximum value for the axis |
+| fuzz | integer | fuzz value for noise filter|
+| flat | integer | values to be discarded |
+| resolution | integer | resolution of axis |
+
+See [struct input_absinfo][4]) definitions.
+
+Example:
+```json
+
+{
+ "id": 1,
+ "command": "register",
+ "name": "Keyboard (Test)",
+ "vid": 0x18d2,
+ "pid": 0x2c42,
+ "bus": "usb",
+ "configuration":[
+ {"type":100, "data":[1, 21]}, // UI_SET_EVBIT : EV_KEY and EV_FF
+ {"type":101, "data":[11, 2, 3, 4]}, // UI_SET_KEYBIT : KEY_0 KEY_1 KEY_2 KEY_3
+ {"type":107, "data":[80]} // UI_SET_FFBIT : FF_RUMBLE
+ ],
+ "ff_effects_max" : 1,
+ "abs_info": [
+ {"code":1, "info": {"value":20, "minimum":-255,
+ "maximum":255, "fuzz":0, "flat":0, "resolution":1}
+ },
+ {"code":8, "info": {"value":-50, "minimum":-255,
+ "maximum":255, "fuzz":0, "flat":0, "resolution":1}
+ }
+ ]
+}
+
+```
+2. `delay`
+Add a delay to command processing
+
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| id | integer | Device id |
+| command | string | Must be set to "delay" |
+| duration | integer | Delay in milliseconds |
+
+Example:
+```json
+{
+ "id": 1,
+ "command": "delay",
+ "duration": 10
+}
+```
+
+3. `inject`
+Send an array of uinput event packets [type, code, value] to the uinput device
+
+| Field | Type | Description |
+|:-------------:|:-------------:|:-------------------------- |
+| id | integer | Device id |
+| command | string | Must be set to "inject" |
+| events | integer array | events to inject |
+
+The "events" parameter is an array of integers, encapsulates evdev input_event type, code and value,
+see the example below.
+
+Example:
+```json
+{
+ "id": 1,
+ "command": "inject",
+ "events": [0x01, 0xb, 0x1, // EV_KEY, KEY_0, DOWN
+ 0x00, 0x00, 0x00, // EV_SYN, SYN_REPORT, 0
+ 0x01, 0x0b, 0x00, // EV_KEY, KEY_0, UP
+ 0x00, 0x00, 0x00, // EV_SYN, SYN_REPORT, 0
+ 0x01, 0x2, 0x1, // EV_KEY, KEY_1, DOWN
+ 0x00, 0x00, 0x01, // EV_SYN, SYN_REPORT, 0
+ 0x01, 0x02, 0x00, // EV_KEY, KEY_1, UP
+ 0x00, 0x00, 0x01 // EV_SYN, SYN_REPORT, 0
+ ]
+}
+```
+
+### Notes
+1. As soon as EOF is reached (either in interactive mode, or in file mode),
+the device that was created will be unregistered. There is no
+explicit command for unregistering a device.
+2. The `getevent` utility can used to print out the key events
+for debugging purposes.
+
+[1]: https://developer.android.com/reference/android/hardware/input/InputManager.InputDeviceListener.html
+[2]: ../../../../cts/tests/tests/hardware/src/android/hardware/input/cts/tests/InputTestCase.java
+[3]: ../../../../cts/tests/tests/hardware/res/raw/
+[4]: ../../../../bionic/libc/kernel/uapi/linux/input.h
diff --git a/cmds/uinput/jni/Android.bp b/cmds/uinput/jni/Android.bp
new file mode 100644
index 000000000000..199bbbd35274
--- /dev/null
+++ b/cmds/uinput/jni/Android.bp
@@ -0,0 +1,23 @@
+cc_library_shared {
+ name: "libuinputcommand_jni",
+
+ srcs: [
+ "com_android_commands_uinput_Device.cpp",
+ ":uinputcommand_aidl",
+ ],
+
+ shared_libs: [
+ "libandroid",
+ "libandroid_runtime_lazy",
+ "libbase",
+ "libbinder",
+ "liblog",
+ "libnativehelper",
+ ],
+
+ cflags: [
+ "-Wall",
+ "-Wextra",
+ "-Werror",
+ ],
+}
diff --git a/cmds/uinput/jni/com_android_commands_uinput_Device.cpp b/cmds/uinput/jni/com_android_commands_uinput_Device.cpp
new file mode 100644
index 000000000000..06fa2aac2c7e
--- /dev/null
+++ b/cmds/uinput/jni/com_android_commands_uinput_Device.cpp
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+#define LOG_TAG "UinputCommandDevice"
+
+#include <linux/uinput.h>
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <time.h>
+#include <unistd.h>
+#include <algorithm>
+#include <array>
+#include <cstdio>
+#include <cstring>
+#include <iterator>
+#include <memory>
+#include <vector>
+
+#include <android/looper.h>
+#include <android_os_Parcel.h>
+#include <jni.h>
+#include <log/log.h>
+#include <nativehelper/JNIHelp.h>
+#include <nativehelper/ScopedLocalRef.h>
+#include <nativehelper/ScopedPrimitiveArray.h>
+#include <nativehelper/ScopedUtfChars.h>
+
+#include <android-base/stringprintf.h>
+
+#include "com_android_commands_uinput_Device.h"
+
+namespace android {
+namespace uinput {
+
+using src::com::android::commands::uinput::InputAbsInfo;
+
+static constexpr const char* UINPUT_PATH = "/dev/uinput";
+
+static struct {
+ jmethodID onDeviceConfigure;
+ jmethodID onDeviceVibrating;
+ jmethodID onDeviceError;
+} gDeviceCallbackClassInfo;
+
+static void checkAndClearException(JNIEnv* env, const char* methodName) {
+ if (env->ExceptionCheck()) {
+ ALOGE("An exception was thrown by callback '%s'.", methodName);
+ env->ExceptionClear();
+ }
+}
+
+DeviceCallback::DeviceCallback(JNIEnv* env, jobject callback)
+ : mCallbackObject(env->NewGlobalRef(callback)) {
+ env->GetJavaVM(&mJavaVM);
+}
+
+DeviceCallback::~DeviceCallback() {
+ JNIEnv* env = getJNIEnv();
+ env->DeleteGlobalRef(mCallbackObject);
+}
+
+void DeviceCallback::onDeviceError() {
+ JNIEnv* env = getJNIEnv();
+ env->CallVoidMethod(mCallbackObject, gDeviceCallbackClassInfo.onDeviceError);
+ checkAndClearException(env, "onDeviceError");
+}
+
+void DeviceCallback::onDeviceConfigure(int handle) {
+ JNIEnv* env = getJNIEnv();
+ env->CallVoidMethod(mCallbackObject, gDeviceCallbackClassInfo.onDeviceConfigure, handle);
+ checkAndClearException(env, "onDeviceConfigure");
+}
+
+void DeviceCallback::onDeviceVibrating(int value) {
+ JNIEnv* env = getJNIEnv();
+ env->CallVoidMethod(mCallbackObject, gDeviceCallbackClassInfo.onDeviceVibrating, value);
+ checkAndClearException(env, "onDeviceVibrating");
+}
+
+JNIEnv* DeviceCallback::getJNIEnv() {
+ JNIEnv* env;
+ mJavaVM->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6);
+ return env;
+}
+
+std::unique_ptr<UinputDevice> UinputDevice::open(int32_t id, const char* name, int32_t vid,
+ int32_t pid, uint16_t bus, uint32_t ffEffectsMax,
+ std::unique_ptr<DeviceCallback> callback) {
+ android::base::unique_fd fd(::open(UINPUT_PATH, O_RDWR | O_NONBLOCK | O_CLOEXEC));
+ if (!fd.ok()) {
+ ALOGE("Failed to open uinput: %s", strerror(errno));
+ return nullptr;
+ }
+
+ int32_t version;
+ ::ioctl(fd, UI_GET_VERSION, &version);
+ if (version < 5) {
+ ALOGE("Kernel version %d older than 5 is not supported", version);
+ return nullptr;
+ }
+
+ struct uinput_setup setupDescriptor;
+ memset(&setupDescriptor, 0, sizeof(setupDescriptor));
+ strlcpy(setupDescriptor.name, name, UINPUT_MAX_NAME_SIZE);
+ setupDescriptor.id.version = 1;
+ setupDescriptor.id.bustype = bus;
+ setupDescriptor.id.vendor = vid;
+ setupDescriptor.id.product = pid;
+ setupDescriptor.ff_effects_max = ffEffectsMax;
+
+ // Request device configuration.
+ callback->onDeviceConfigure(fd.get());
+
+ // register the input device
+ if (::ioctl(fd, UI_DEV_SETUP, &setupDescriptor)) {
+ ALOGE("UI_DEV_SETUP ioctl failed on fd %d: %s.", fd.get(), strerror(errno));
+ return nullptr;
+ }
+
+ if (::ioctl(fd, UI_DEV_CREATE) != 0) {
+ ALOGE("Unable to create uinput device: %s.", strerror(errno));
+ return nullptr;
+ }
+
+ // using 'new' to access non-public constructor
+ return std::unique_ptr<UinputDevice>(new UinputDevice(id, std::move(fd), std::move(callback)));
+}
+
+UinputDevice::UinputDevice(int32_t id, android::base::unique_fd fd,
+ std::unique_ptr<DeviceCallback> callback)
+ : mId(id), mFd(std::move(fd)), mDeviceCallback(std::move(callback)) {
+ ALooper* aLooper = ALooper_forThread();
+ if (aLooper == nullptr) {
+ ALOGE("Could not get ALooper, ALooper_forThread returned NULL");
+ aLooper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS);
+ }
+ ALooper_addFd(
+ aLooper, mFd, 0, ALOOPER_EVENT_INPUT,
+ [](int, int events, void* data) {
+ UinputDevice* d = reinterpret_cast<UinputDevice*>(data);
+ return d->handleEvents(events);
+ },
+ reinterpret_cast<void*>(this));
+ ALOGI("uinput device %d created: version = %d, fd = %d", mId, UINPUT_VERSION, mFd.get());
+}
+
+UinputDevice::~UinputDevice() {
+ ::ioctl(mFd, UI_DEV_DESTROY);
+}
+
+void UinputDevice::injectEvent(uint16_t type, uint16_t code, int32_t value) {
+ struct input_event event = {};
+ event.type = type;
+ event.code = code;
+ event.value = value;
+ timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ TIMESPEC_TO_TIMEVAL(&event.time, &ts);
+
+ if (::write(mFd, &event, sizeof(input_event)) < 0) {
+ ALOGE("Could not write event %" PRIu16 " %" PRIu16 " with value %" PRId32 " : %s", type,
+ code, value, strerror(errno));
+ }
+}
+
+int UinputDevice::handleEvents(int events) {
+ if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) {
+ ALOGE("uinput node was closed or an error occurred. events=0x%x", events);
+ mDeviceCallback->onDeviceError();
+ return 0;
+ }
+ struct input_event ev;
+ ssize_t ret = ::read(mFd, &ev, sizeof(ev));
+ if (ret < 0) {
+ ALOGE("Failed to read from uinput node: %s", strerror(errno));
+ mDeviceCallback->onDeviceError();
+ return 0;
+ }
+
+ switch (ev.type) {
+ case EV_UINPUT: {
+ if (ev.code == UI_FF_UPLOAD) {
+ struct uinput_ff_upload ff_upload;
+ ff_upload.request_id = ev.value;
+ ::ioctl(mFd, UI_BEGIN_FF_UPLOAD, &ff_upload);
+ ff_upload.retval = 0;
+ ::ioctl(mFd, UI_END_FF_UPLOAD, &ff_upload);
+ } else if (ev.code == UI_FF_ERASE) {
+ struct uinput_ff_erase ff_erase;
+ ff_erase.request_id = ev.value;
+ ::ioctl(mFd, UI_BEGIN_FF_ERASE, &ff_erase);
+ ff_erase.retval = 0;
+ ::ioctl(mFd, UI_END_FF_ERASE, &ff_erase);
+ }
+ break;
+ }
+ case EV_FF: {
+ ALOGI("EV_FF effect = %d value = %d", ev.code, ev.value);
+ mDeviceCallback->onDeviceVibrating(ev.value);
+ break;
+ }
+ default: {
+ ALOGI("Unhandled event type: %" PRIu32, ev.type);
+ break;
+ }
+ }
+
+ return 1;
+}
+
+} // namespace uinput
+
+std::vector<int32_t> toVector(JNIEnv* env, jintArray javaArray) {
+ std::vector<int32_t> data;
+ if (javaArray == nullptr) {
+ return data;
+ }
+
+ ScopedIntArrayRO scopedArray(env, javaArray);
+ size_t size = scopedArray.size();
+ data.reserve(size);
+ for (size_t i = 0; i < size; i++) {
+ data.push_back(static_cast<int32_t>(scopedArray[i]));
+ }
+ return data;
+}
+
+static jlong openUinputDevice(JNIEnv* env, jclass /* clazz */, jstring rawName, jint id, jint vid,
+ jint pid, jint bus, jint ffEffectsMax, jobject callback) {
+ ScopedUtfChars name(env, rawName);
+ if (name.c_str() == nullptr) {
+ return 0;
+ }
+
+ std::unique_ptr<uinput::DeviceCallback> cb =
+ std::make_unique<uinput::DeviceCallback>(env, callback);
+
+ std::unique_ptr<uinput::UinputDevice> d =
+ uinput::UinputDevice::open(id, name.c_str(), vid, pid, bus, ffEffectsMax,
+ std::move(cb));
+ return reinterpret_cast<jlong>(d.release());
+}
+
+static void closeUinputDevice(JNIEnv* /* env */, jclass /* clazz */, jlong ptr) {
+ uinput::UinputDevice* d = reinterpret_cast<uinput::UinputDevice*>(ptr);
+ if (d != nullptr) {
+ delete d;
+ }
+}
+
+static void injectEvent(JNIEnv* /* env */, jclass /* clazz */, jlong ptr, jint type, jint code,
+ jint value) {
+ uinput::UinputDevice* d = reinterpret_cast<uinput::UinputDevice*>(ptr);
+ if (d != nullptr) {
+ d->injectEvent(static_cast<uint16_t>(type), static_cast<uint16_t>(code),
+ static_cast<int32_t>(value));
+ } else {
+ ALOGE("Could not inject event, Device* is null!");
+ }
+}
+
+static void configure(JNIEnv* env, jclass /* clazz */, jint handle, jint code,
+ jintArray rawConfigs) {
+ std::vector<int32_t> configs = toVector(env, rawConfigs);
+ // Configure uinput device, with user specified code and value.
+ for (auto& config : configs) {
+ ::ioctl(static_cast<int>(handle), _IOW(UINPUT_IOCTL_BASE, code, int), config);
+ }
+}
+
+static void setAbsInfo(JNIEnv* env, jclass /* clazz */, jint handle, jint axisCode,
+ jobject infoObj) {
+ Parcel* parcel = parcelForJavaObject(env, infoObj);
+ uinput::InputAbsInfo info;
+
+ info.readFromParcel(parcel);
+
+ struct uinput_abs_setup absSetup;
+ absSetup.code = axisCode;
+ absSetup.absinfo.maximum = info.maximum;
+ absSetup.absinfo.minimum = info.minimum;
+ absSetup.absinfo.value = info.value;
+ absSetup.absinfo.fuzz = info.fuzz;
+ absSetup.absinfo.flat = info.flat;
+ absSetup.absinfo.resolution = info.resolution;
+
+ ::ioctl(static_cast<int>(handle), UI_ABS_SETUP, &absSetup);
+}
+
+static JNINativeMethod sMethods[] = {
+ {"nativeOpenUinputDevice",
+ "(Ljava/lang/String;IIIII"
+ "Lcom/android/commands/uinput/Device$DeviceCallback;)J",
+ reinterpret_cast<void*>(openUinputDevice)},
+ {"nativeInjectEvent", "(JIII)V", reinterpret_cast<void*>(injectEvent)},
+ {"nativeConfigure", "(II[I)V", reinterpret_cast<void*>(configure)},
+ {"nativeSetAbsInfo", "(IILandroid/os/Parcel;)V", reinterpret_cast<void*>(setAbsInfo)},
+ {"nativeCloseUinputDevice", "(J)V", reinterpret_cast<void*>(closeUinputDevice)},
+};
+
+int register_com_android_commands_uinput_Device(JNIEnv* env) {
+ jclass clazz = env->FindClass("com/android/commands/uinput/Device$DeviceCallback");
+ if (clazz == nullptr) {
+ ALOGE("Unable to find class 'DeviceCallback'");
+ return JNI_ERR;
+ }
+
+ uinput::gDeviceCallbackClassInfo.onDeviceConfigure =
+ env->GetMethodID(clazz, "onDeviceConfigure", "(I)V");
+ uinput::gDeviceCallbackClassInfo.onDeviceVibrating =
+ env->GetMethodID(clazz, "onDeviceVibrating", "(I)V");
+ uinput::gDeviceCallbackClassInfo.onDeviceError =
+ env->GetMethodID(clazz, "onDeviceError", "()V");
+ if (uinput::gDeviceCallbackClassInfo.onDeviceConfigure == nullptr ||
+ uinput::gDeviceCallbackClassInfo.onDeviceError == nullptr ||
+ uinput::gDeviceCallbackClassInfo.onDeviceVibrating == nullptr) {
+ ALOGE("Unable to obtain onDeviceConfigure or onDeviceError or onDeviceVibrating methods");
+ return JNI_ERR;
+ }
+ return jniRegisterNativeMethods(env, "com/android/commands/uinput/Device", sMethods,
+ NELEM(sMethods));
+}
+
+} // namespace android
+
+jint JNI_OnLoad(JavaVM* jvm, void*) {
+ JNIEnv* env = nullptr;
+ if (jvm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6)) {
+ return JNI_ERR;
+ }
+
+ if (android::register_com_android_commands_uinput_Device(env) < 0) {
+ return JNI_ERR;
+ }
+
+ return JNI_VERSION_1_6;
+}
diff --git a/cmds/uinput/jni/com_android_commands_uinput_Device.h b/cmds/uinput/jni/com_android_commands_uinput_Device.h
new file mode 100644
index 000000000000..5a9a06cfb32e
--- /dev/null
+++ b/cmds/uinput/jni/com_android_commands_uinput_Device.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2020 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 <memory>
+#include <vector>
+
+#include <jni.h>
+#include <linux/input.h>
+
+#include <android-base/unique_fd.h>
+#include "src/com/android/commands/uinput/InputAbsInfo.h"
+
+namespace android {
+namespace uinput {
+
+class DeviceCallback {
+public:
+ DeviceCallback(JNIEnv* env, jobject callback);
+ ~DeviceCallback();
+
+ void onDeviceOpen();
+ void onDeviceGetReport(uint32_t requestId, uint8_t reportId);
+ void onDeviceOutput(const std::vector<uint8_t>& data);
+ void onDeviceConfigure(int handle);
+ void onDeviceVibrating(int value);
+ void onDeviceError();
+
+private:
+ JNIEnv* getJNIEnv();
+ jobject mCallbackObject;
+ JavaVM* mJavaVM;
+};
+
+class UinputDevice {
+public:
+ static std::unique_ptr<UinputDevice> open(int32_t id, const char* name, int32_t vid,
+ int32_t pid, uint16_t bus, uint32_t ff_effects_max,
+ std::unique_ptr<DeviceCallback> callback);
+
+ virtual ~UinputDevice();
+
+ void injectEvent(uint16_t type, uint16_t code, int32_t value);
+ int handleEvents(int events);
+
+private:
+ UinputDevice(int32_t id, android::base::unique_fd fd, std::unique_ptr<DeviceCallback> callback);
+
+ int32_t mId;
+ android::base::unique_fd mFd;
+ std::unique_ptr<DeviceCallback> mDeviceCallback;
+};
+
+} // namespace uinput
+} // namespace android
diff --git a/cmds/uinput/src/com/android/commands/uinput/Device.java b/cmds/uinput/src/com/android/commands/uinput/Device.java
new file mode 100644
index 000000000000..62bee7b964bd
--- /dev/null
+++ b/cmds/uinput/src/com/android/commands/uinput/Device.java
@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.commands.uinput;
+
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Parcel;
+import android.os.SystemClock;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.os.SomeArgs;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import src.com.android.commands.uinput.InputAbsInfo;
+
+/**
+ * Device class defines uinput device interfaces of device operations, for device open, close,
+ * configuration, events injection.
+ */
+public class Device {
+ private static final String TAG = "UinputDevice";
+
+ private static final int MSG_OPEN_UINPUT_DEVICE = 1;
+ private static final int MSG_CLOSE_UINPUT_DEVICE = 2;
+ private static final int MSG_INJECT_EVENT = 3;
+
+ private final int mId;
+ private final HandlerThread mThread;
+ private final DeviceHandler mHandler;
+ // mConfiguration is sparse array of ioctl code and array of values.
+ private final SparseArray<int[]> mConfiguration;
+ private final SparseArray<InputAbsInfo> mAbsInfo;
+ private final OutputStream mOutputStream;
+ private final Object mCond = new Object();
+ private long mTimeToSend;
+
+ static {
+ System.loadLibrary("uinputcommand_jni");
+ }
+
+ private static native long nativeOpenUinputDevice(String name, int id, int vid, int pid,
+ int bus, int ffEffectsMax, DeviceCallback callback);
+ private static native void nativeCloseUinputDevice(long ptr);
+ private static native void nativeInjectEvent(long ptr, int type, int code, int value);
+ private static native void nativeConfigure(int handle, int code, int[] configs);
+ private static native void nativeSetAbsInfo(int handle, int axisCode, Parcel axisParcel);
+
+ public Device(int id, String name, int vid, int pid, int bus,
+ SparseArray<int[]> configuration, int ffEffectsMax,
+ SparseArray<InputAbsInfo> absInfo) {
+ mId = id;
+ mThread = new HandlerThread("UinputDeviceHandler");
+ mThread.start();
+ mHandler = new DeviceHandler(mThread.getLooper());
+ mConfiguration = configuration;
+ mAbsInfo = absInfo;
+ mOutputStream = System.out;
+ SomeArgs args = SomeArgs.obtain();
+ args.argi1 = id;
+ args.argi2 = vid;
+ args.argi3 = pid;
+ args.argi4 = bus;
+ args.argi5 = ffEffectsMax;
+ if (name != null) {
+ args.arg1 = name;
+ } else {
+ args.arg1 = id + ":" + vid + ":" + pid;
+ }
+
+ mHandler.obtainMessage(MSG_OPEN_UINPUT_DEVICE, args).sendToTarget();
+ mTimeToSend = SystemClock.uptimeMillis();
+ }
+
+ /**
+ * Inject uinput events to device
+ *
+ * @param events Array of raw uinput events.
+ */
+ public void injectEvent(int[] events) {
+ // if two messages are sent at identical time, they will be processed in order received
+ Message msg = mHandler.obtainMessage(MSG_INJECT_EVENT, events);
+ mHandler.sendMessageAtTime(msg, mTimeToSend);
+ }
+
+ /**
+ * Impose a delay to the device for execution.
+ *
+ * @param delay Time to delay in unit of milliseconds.
+ */
+ public void addDelay(int delay) {
+ mTimeToSend = Math.max(SystemClock.uptimeMillis(), mTimeToSend) + delay;
+ }
+
+ /**
+ * Close an uinput device.
+ *
+ */
+ public void close() {
+ Message msg = mHandler.obtainMessage(MSG_CLOSE_UINPUT_DEVICE);
+ mHandler.sendMessageAtTime(msg, Math.max(SystemClock.uptimeMillis(), mTimeToSend) + 1);
+ try {
+ synchronized (mCond) {
+ mCond.wait();
+ }
+ } catch (InterruptedException ignore) {
+ }
+ }
+
+ private class DeviceHandler extends Handler {
+ private long mPtr;
+ private int mBarrierToken;
+
+ DeviceHandler(Looper looper) {
+ super(looper);
+ }
+
+ @Override
+ public void handleMessage(Message msg) {
+ switch (msg.what) {
+ case MSG_OPEN_UINPUT_DEVICE:
+ SomeArgs args = (SomeArgs) msg.obj;
+ mPtr = nativeOpenUinputDevice((String) args.arg1, args.argi1, args.argi2,
+ args.argi3, args.argi4, args.argi5,
+ new DeviceCallback());
+ break;
+ case MSG_INJECT_EVENT:
+ if (mPtr != 0) {
+ int[] events = (int[]) msg.obj;
+ for (int pos = 0; pos + 2 < events.length; pos += 3) {
+ nativeInjectEvent(mPtr, events[pos], events[pos + 1], events[pos + 2]);
+ }
+ }
+ break;
+ case MSG_CLOSE_UINPUT_DEVICE:
+ if (mPtr != 0) {
+ nativeCloseUinputDevice(mPtr);
+ getLooper().quitSafely();
+ mPtr = 0;
+ } else {
+ Log.e(TAG, "Tried to close already closed device.");
+ }
+ Log.i(TAG, "Device closed.");
+ synchronized (mCond) {
+ mCond.notify();
+ }
+ break;
+ default:
+ throw new IllegalArgumentException("Unknown device message");
+ }
+ }
+
+ public void pauseEvents() {
+ mBarrierToken = getLooper().myQueue().postSyncBarrier();
+ }
+
+ public void resumeEvents() {
+ getLooper().myQueue().removeSyncBarrier(mBarrierToken);
+ mBarrierToken = 0;
+ }
+ }
+
+ private class DeviceCallback {
+ public void onDeviceOpen() {
+ mHandler.resumeEvents();
+ }
+
+ public void onDeviceConfigure(int handle) {
+ for (int i = 0; i < mConfiguration.size(); i++) {
+ int key = mConfiguration.keyAt(i);
+ int[] data = mConfiguration.get(key);
+ nativeConfigure(handle, key, data);
+ }
+
+ if (mAbsInfo != null) {
+ for (int i = 0; i < mAbsInfo.size(); i++) {
+ int key = mAbsInfo.keyAt(i);
+ InputAbsInfo info = mAbsInfo.get(key);
+ Parcel parcel = Parcel.obtain();
+ info.writeToParcel(parcel, 0);
+ parcel.setDataPosition(0);
+ nativeSetAbsInfo(handle, key, parcel);
+ }
+ }
+ }
+
+ public void onDeviceVibrating(int value) {
+ JSONObject json = new JSONObject();
+ try {
+ json.put("reason", "vibrating");
+ json.put("id", mId);
+ json.put("status", value);
+ } catch (JSONException e) {
+ throw new RuntimeException("Could not create JSON object ", e);
+ }
+ try {
+ mOutputStream.write(json.toString().getBytes());
+ mOutputStream.flush();
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public void onDeviceError() {
+ Log.e(TAG, "Device error occurred, closing /dev/uinput");
+ Message msg = mHandler.obtainMessage(MSG_CLOSE_UINPUT_DEVICE);
+ msg.setAsynchronous(true);
+ msg.sendToTarget();
+ }
+ }
+}
diff --git a/cmds/uinput/src/com/android/commands/uinput/Event.java b/cmds/uinput/src/com/android/commands/uinput/Event.java
new file mode 100644
index 000000000000..c4ba05054eda
--- /dev/null
+++ b/cmds/uinput/src/com/android/commands/uinput/Event.java
@@ -0,0 +1,454 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.commands.uinput;
+
+import android.util.JsonReader;
+import android.util.JsonToken;
+import android.util.Log;
+import android.util.SparseArray;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import src.com.android.commands.uinput.InputAbsInfo;
+
+/**
+ * An event is a JSON file defined action event to instruct uinput to perform a command like
+ * device registration or uinput events injection.
+ */
+public class Event {
+ private static final String TAG = "UinputEvent";
+
+ public static final String COMMAND_REGISTER = "register";
+ public static final String COMMAND_DELAY = "delay";
+ public static final String COMMAND_INJECT = "inject";
+ private static final int ABS_CNT = 64;
+
+ // These constants come from "include/uapi/linux/input.h" in the kernel
+ enum Bus {
+ USB(0x03), BLUETOOTH(0x05);
+ private final int mValue;
+
+ Bus(int value) {
+ mValue = value;
+ }
+
+ int getValue() {
+ return mValue;
+ }
+ }
+
+ private int mId;
+ private String mCommand;
+ private String mName;
+ private int mVid;
+ private int mPid;
+ private Bus mBus;
+ private int[] mInjections;
+ private SparseArray<int[]> mConfiguration;
+ private int mDuration;
+ private int mFfEffectsMax = 0;
+ private SparseArray<InputAbsInfo> mAbsInfo;
+
+ public int getId() {
+ return mId;
+ }
+
+ public String getCommand() {
+ return mCommand;
+ }
+
+ public String getName() {
+ return mName;
+ }
+
+ public int getVendorId() {
+ return mVid;
+ }
+
+ public int getProductId() {
+ return mPid;
+ }
+
+ public int getBus() {
+ return mBus.getValue();
+ }
+
+ public int[] getInjections() {
+ return mInjections;
+ }
+
+ public SparseArray<int[]> getConfiguration() {
+ return mConfiguration;
+ }
+
+ public int getDuration() {
+ return mDuration;
+ }
+
+ public int getFfEffectsMax() {
+ return mFfEffectsMax;
+ }
+
+ public SparseArray<InputAbsInfo> getAbsInfo() {
+ return mAbsInfo;
+ }
+
+ /**
+ * Convert an event to String.
+ */
+ public String toString() {
+ return "Event{id=" + mId
+ + ", command=" + mCommand
+ + ", name=" + mName
+ + ", vid=" + mVid
+ + ", pid=" + mPid
+ + ", bus=" + mBus
+ + ", events=" + Arrays.toString(mInjections)
+ + ", configuration=" + mConfiguration
+ + ", duration=" + mDuration
+ + ", ff_effects_max=" + mFfEffectsMax
+ + "}";
+ }
+
+ private static class Builder {
+ private Event mEvent;
+
+ Builder() {
+ mEvent = new Event();
+ }
+
+ public void setId(int id) {
+ mEvent.mId = id;
+ }
+
+ private void setCommand(String command) {
+ mEvent.mCommand = command;
+ }
+
+ public void setName(String name) {
+ mEvent.mName = name;
+ }
+
+ public void setInjections(int[] events) {
+ mEvent.mInjections = events;
+ }
+
+ public void setConfiguration(SparseArray<int[]> configuration) {
+ mEvent.mConfiguration = configuration;
+ }
+
+ public void setVid(int vid) {
+ mEvent.mVid = vid;
+ }
+
+ public void setPid(int pid) {
+ mEvent.mPid = pid;
+ }
+
+ public void setBus(Bus bus) {
+ mEvent.mBus = bus;
+ }
+
+ public void setDuration(int duration) {
+ mEvent.mDuration = duration;
+ }
+
+ public void setFfEffectsMax(int ffEffectsMax) {
+ mEvent.mFfEffectsMax = ffEffectsMax;
+ }
+
+ public void setAbsInfo(SparseArray<InputAbsInfo> absInfo) {
+ mEvent.mAbsInfo = absInfo;
+ }
+
+ public Event build() {
+ if (mEvent.mId == -1) {
+ throw new IllegalStateException("No event id");
+ } else if (mEvent.mCommand == null) {
+ throw new IllegalStateException("Event does not contain a command");
+ }
+ if (COMMAND_REGISTER.equals(mEvent.mCommand)) {
+ if (mEvent.mConfiguration == null) {
+ throw new IllegalStateException(
+ "Device registration is missing configuration");
+ }
+ } else if (COMMAND_DELAY.equals(mEvent.mCommand)) {
+ if (mEvent.mDuration <= 0) {
+ throw new IllegalStateException("Delay has missing or invalid duration");
+ }
+ } else if (COMMAND_INJECT.equals(mEvent.mCommand)) {
+ if (mEvent.mInjections == null) {
+ throw new IllegalStateException("Inject command is missing injection data");
+ }
+ } else {
+ throw new IllegalStateException("Unknown command " + mEvent.mCommand);
+ }
+ return mEvent;
+ }
+ }
+
+ /**
+ * A class that parses the JSON event format from an input stream to build device events.
+ */
+ public static class Reader {
+ private JsonReader mReader;
+
+ public Reader(InputStreamReader in) {
+ mReader = new JsonReader(in);
+ mReader.setLenient(true);
+ }
+
+ /**
+ * Get next event entry from JSON file reader.
+ */
+ public Event getNextEvent() throws IOException {
+ Event e = null;
+ while (e == null && mReader.peek() != JsonToken.END_DOCUMENT) {
+ Event.Builder eb = new Event.Builder();
+ try {
+ mReader.beginObject();
+ while (mReader.hasNext()) {
+ String name = mReader.nextName();
+ switch (name) {
+ case "id":
+ eb.setId(readInt());
+ break;
+ case "command":
+ eb.setCommand(mReader.nextString());
+ break;
+ case "name":
+ eb.setName(mReader.nextString());
+ break;
+ case "vid":
+ eb.setVid(readInt());
+ break;
+ case "pid":
+ eb.setPid(readInt());
+ break;
+ case "bus":
+ eb.setBus(readBus());
+ break;
+ case "events":
+ int[] injections = readIntList().stream()
+ .mapToInt(Integer::intValue).toArray();
+ eb.setInjections(injections);
+ break;
+ case "configuration":
+ eb.setConfiguration(readConfiguration());
+ break;
+ case "ff_effects_max":
+ eb.setFfEffectsMax(readInt());
+ break;
+ case "abs_info":
+ eb.setAbsInfo(readAbsInfoArray());
+ break;
+ case "duration":
+ eb.setDuration(readInt());
+ break;
+ default:
+ mReader.skipValue();
+ }
+ }
+ mReader.endObject();
+ } catch (IllegalStateException ex) {
+ error("Error reading in object, ignoring.", ex);
+ consumeRemainingElements();
+ mReader.endObject();
+ continue;
+ }
+ e = eb.build();
+ }
+
+ return e;
+ }
+
+ private ArrayList<Integer> readIntList() throws IOException {
+ ArrayList<Integer> data = new ArrayList<Integer>();
+ try {
+ mReader.beginArray();
+ while (mReader.hasNext()) {
+ data.add(Integer.decode(mReader.nextString()));
+ }
+ mReader.endArray();
+ } catch (IllegalStateException | NumberFormatException e) {
+ consumeRemainingElements();
+ mReader.endArray();
+ throw new IllegalStateException("Encountered malformed data.", e);
+ }
+ return data;
+ }
+
+ private byte[] readData() throws IOException {
+ ArrayList<Integer> data = readIntList();
+ byte[] rawData = new byte[data.size()];
+ for (int i = 0; i < data.size(); i++) {
+ int d = data.get(i);
+ if ((d & 0xFF) != d) {
+ throw new IllegalStateException("Invalid data, all values must be byte-sized");
+ }
+ rawData[i] = (byte) d;
+ }
+ return rawData;
+ }
+
+ private int readInt() throws IOException {
+ String val = mReader.nextString();
+ return Integer.decode(val);
+ }
+
+ private Bus readBus() throws IOException {
+ String val = mReader.nextString();
+ return Bus.valueOf(val.toUpperCase());
+ }
+
+ private SparseArray<int[]> readConfiguration()
+ throws IllegalStateException, IOException {
+ SparseArray<int[]> configuration = new SparseArray<>();
+ try {
+ mReader.beginArray();
+ while (mReader.hasNext()) {
+ int type = 0;
+ int[] data = null;
+ mReader.beginObject();
+ while (mReader.hasNext()) {
+ String name = mReader.nextName();
+ switch (name) {
+ case "type":
+ type = readInt();
+ break;
+ case "data":
+ data = readIntList().stream()
+ .mapToInt(Integer::intValue).toArray();
+ break;
+ default:
+ consumeRemainingElements();
+ mReader.endObject();
+ throw new IllegalStateException(
+ "Invalid key in device configuration: " + name);
+ }
+ }
+ mReader.endObject();
+ if (data != null) {
+ configuration.put(type, data);
+ }
+ }
+ mReader.endArray();
+ } catch (IllegalStateException | NumberFormatException e) {
+ consumeRemainingElements();
+ mReader.endArray();
+ throw new IllegalStateException("Encountered malformed data.", e);
+ }
+ return configuration;
+ }
+
+ private InputAbsInfo readAbsInfo() throws IllegalStateException, IOException {
+ InputAbsInfo absInfo = new InputAbsInfo();
+ try {
+ mReader.beginObject();
+ while (mReader.hasNext()) {
+ String name = mReader.nextName();
+ switch (name) {
+ case "value":
+ absInfo.value = readInt();
+ break;
+ case "minimum":
+ absInfo.minimum = readInt();
+ break;
+ case "maximum":
+ absInfo.maximum = readInt();
+ break;
+ case "fuzz":
+ absInfo.fuzz = readInt();
+ break;
+ case "flat":
+ absInfo.flat = readInt();
+ break;
+ case "resolution":
+ absInfo.resolution = readInt();
+ break;
+ default:
+ consumeRemainingElements();
+ mReader.endObject();
+ throw new IllegalStateException("Invalid key in abs info: " + name);
+ }
+ }
+ mReader.endObject();
+ } catch (IllegalStateException | NumberFormatException e) {
+ consumeRemainingElements();
+ mReader.endObject();
+ throw new IllegalStateException("Encountered malformed data.", e);
+ }
+ return absInfo;
+ }
+
+ private SparseArray<InputAbsInfo> readAbsInfoArray()
+ throws IllegalStateException, IOException {
+ SparseArray<InputAbsInfo> infoArray = new SparseArray<>();
+ try {
+ mReader.beginArray();
+ while (mReader.hasNext()) {
+ int type = 0;
+ InputAbsInfo absInfo = null;
+ mReader.beginObject();
+ while (mReader.hasNext()) {
+ String name = mReader.nextName();
+ switch (name) {
+ case "code":
+ type = readInt();
+ break;
+ case "info":
+ absInfo = readAbsInfo();
+ break;
+ default:
+ consumeRemainingElements();
+ mReader.endObject();
+ throw new IllegalStateException("Invalid key in abs info array: "
+ + name);
+ }
+ }
+ mReader.endObject();
+ if (absInfo != null) {
+ infoArray.put(type, absInfo);
+ }
+ }
+ mReader.endArray();
+ } catch (IllegalStateException | NumberFormatException e) {
+ consumeRemainingElements();
+ mReader.endArray();
+ throw new IllegalStateException("Encountered malformed data.", e);
+ }
+ return infoArray;
+ }
+
+ private void consumeRemainingElements() throws IOException {
+ while (mReader.hasNext()) {
+ mReader.skipValue();
+ }
+ }
+ }
+
+ private static void error(String msg, Exception e) {
+ System.out.println(msg);
+ Log.e(TAG, msg);
+ if (e != null) {
+ Log.e(TAG, Log.getStackTraceString(e));
+ }
+ }
+}
diff --git a/cmds/uinput/src/com/android/commands/uinput/InputAbsInfo.aidl b/cmds/uinput/src/com/android/commands/uinput/InputAbsInfo.aidl
new file mode 100644
index 000000000000..88c57f2c8965
--- /dev/null
+++ b/cmds/uinput/src/com/android/commands/uinput/InputAbsInfo.aidl
@@ -0,0 +1,26 @@
+/*
+**
+** Copyright 2020, 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.
+*/
+package src.com.android.commands.uinput;
+
+parcelable InputAbsInfo {
+ int value;
+ int minimum;
+ int maximum;
+ int fuzz;
+ int flat;
+ int resolution;
+}
diff --git a/cmds/uinput/src/com/android/commands/uinput/Uinput.java b/cmds/uinput/src/com/android/commands/uinput/Uinput.java
new file mode 100644
index 000000000000..f7601a2f7c07
--- /dev/null
+++ b/cmds/uinput/src/com/android/commands/uinput/Uinput.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.commands.uinput;
+
+import android.util.Log;
+import android.util.SparseArray;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+
+/**
+ * Uinput class encapsulates execution of "uinput" command. It parses the provided input stream
+ * parameters as JSON file format, extract event entries and perform commands of event entries.
+ * Uinput device will be created when performing registration command and used to inject events.
+ */
+public class Uinput {
+ private static final String TAG = "UINPUT";
+
+ private final Event.Reader mReader;
+ private final SparseArray<Device> mDevices;
+
+ private static void usage() {
+ error("Usage: uinput [FILE]");
+ }
+
+ /**
+ * Commandline "uinput" binary main entry
+ */
+ public static void main(String[] args) {
+ if (args.length != 1) {
+ usage();
+ System.exit(1);
+ }
+
+ InputStream stream = null;
+ try {
+ if (args[0].equals("-")) {
+ stream = System.in;
+ } else {
+ File f = new File(args[0]);
+ stream = new FileInputStream(f);
+ }
+ (new Uinput(stream)).run();
+ } catch (Exception e) {
+ error("Uinput injection failed.", e);
+ System.exit(1);
+ } finally {
+ try {
+ stream.close();
+ } catch (IOException e) {
+ }
+ }
+ }
+
+ private Uinput(InputStream in) {
+ mDevices = new SparseArray<Device>();
+ try {
+ mReader = new Event.Reader(new InputStreamReader(in, "UTF-8"));
+ } catch (UnsupportedEncodingException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ private void run() {
+ try {
+ Event e = null;
+ while ((e = mReader.getNextEvent()) != null) {
+ process(e);
+ }
+ } catch (IOException ex) {
+ error("Error reading in events.", ex);
+ }
+
+ for (int i = 0; i < mDevices.size(); i++) {
+ mDevices.valueAt(i).close();
+ }
+ }
+
+ private void process(Event e) {
+ final int index = mDevices.indexOfKey(e.getId());
+ if (index >= 0) {
+ Device d = mDevices.valueAt(index);
+ if (Event.COMMAND_DELAY.equals(e.getCommand())) {
+ d.addDelay(e.getDuration());
+ } else if (Event.COMMAND_INJECT.equals(e.getCommand())) {
+ d.injectEvent(e.getInjections());
+ } else {
+ if (Event.COMMAND_REGISTER.equals(e.getCommand())) {
+ error("Device id=" + e.getId() + " is already registered. Ignoring event.");
+ } else {
+ error("Unknown command \"" + e.getCommand() + "\". Ignoring event.");
+ }
+ }
+ } else if (Event.COMMAND_REGISTER.equals(e.getCommand())) {
+ registerDevice(e);
+ } else {
+ Log.e(TAG, "Unknown device id specified. Ignoring event.");
+ }
+ }
+
+ private void registerDevice(Event e) {
+ if (!Event.COMMAND_REGISTER.equals(e.getCommand())) {
+ throw new IllegalStateException(
+ "Tried to send command \"" + e.getCommand() + "\" to an unregistered device!");
+ }
+ int id = e.getId();
+ Device d = new Device(id, e.getName(), e.getVendorId(), e.getProductId(), e.getBus(),
+ e.getConfiguration(), e.getFfEffectsMax(), e.getAbsInfo());
+ mDevices.append(id, d);
+ }
+
+ private static void error(String msg) {
+ error(msg, null);
+ }
+
+ private static void error(String msg, Exception e) {
+ Log.e(TAG, msg);
+ if (e != null) {
+ Log.e(TAG, Log.getStackTraceString(e));
+ }
+ }
+}
diff --git a/cmds/uinput/uinput b/cmds/uinput/uinput
new file mode 100755
index 000000000000..ab2770ee2043
--- /dev/null
+++ b/cmds/uinput/uinput
@@ -0,0 +1,9 @@
+#!/system/bin/sh
+
+# Preload the native portion libuinputcommand_jni.so to bypass the dependency
+# checks in the Java classloader, which prohibit dependencies that aren't
+# listed in system/core/rootdir/etc/public.libraries.android.txt.
+export LD_PRELOAD=libuinputcommand_jni.so
+
+export CLASSPATH=/system/framework/uinput.jar
+exec app_process /system/bin com.android.commands.uinput.Uinput "$@"
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-03 06:39:43 +0000