1 files changed, 175 insertions, 0 deletions
diff --git a/cmds/bootanimation/iot/BootAction.cpp b/cmds/bootanimation/iot/BootAction.cpp
new file mode 100644
index 000000000000..8fda87e99099
--- /dev/null
+++ b/cmds/bootanimation/iot/BootAction.cpp
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2017 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 "BootAction.h"
+
+#define LOG_TAG "BootAction"
+
+#include <android-base/strings.h>
+#include <cpu-features.h>
+#include <dlfcn.h>
+#include <pio/peripheral_manager_client.h>
+#include <utils/Log.h>
+
+using android::base::Split;
+using android::base::Join;
+using android::base::StartsWith;
+using android::base::EndsWith;
+
+namespace android {
+
+BootAction::~BootAction() {
+    if (mLibHandle != nullptr) {
+        dlclose(mLibHandle);
+    }
+}
+
+bool BootAction::init(const std::string& libraryPath, const std::string& config) {
+    APeripheralManagerClient* client = nullptr;
+    ALOGD("Connecting to peripheralmanager");
+    // Wait for peripheral manager to come up.
+    while (client == nullptr) {
+        client = APeripheralManagerClient_new();
+        if (client == nullptr) {
+          ALOGV("peripheralmanager is not up, sleeping before we check again.");
+          usleep(250000);
+        }
+    }
+    ALOGD("Peripheralmanager is up.");
+    APeripheralManagerClient_delete(client);
+
+    std::string path_to_lib = libraryPath;
+    if (!parseConfig(config, &path_to_lib)) {
+        return false;
+    }
+
+    ALOGI("Loading boot action %s", path_to_lib.c_str());
+    mLibHandle = dlopen(path_to_lib.c_str(), RTLD_NOW);
+    if (mLibHandle == nullptr) {
+        ALOGE("Unable to load library at %s :: %s",
+              path_to_lib.c_str(), dlerror());
+        return false;
+    }
+
+    void* loaded = nullptr;
+    if (!loadSymbol("boot_action_init", &loaded) || loaded == nullptr) {
+        return false;
+    }
+    mLibInit = reinterpret_cast<libInit>(loaded);
+
+    loaded = nullptr;
+    if (!loadSymbol("boot_action_shutdown", &loaded) || loaded == nullptr) {
+        return false;
+    }
+    mLibShutdown = reinterpret_cast<libShutdown>(loaded);
+
+    // StartPart is considered optional, if it isn't exported by the library
+    // we will still call init and shutdown.
+    loaded = nullptr;
+    if (!loadSymbol("boot_action_start_part", &loaded) || loaded == nullptr) {
+        ALOGI("No boot_action_start_part found, action will not be told when "
+              "Animation parts change.");
+    } else {
+        mLibStartPart = reinterpret_cast<libStartPart>(loaded);
+    }
+
+    ALOGD("Entering boot_action_init");
+    bool result = mLibInit();
+    ALOGD("Returned from boot_action_init");
+    return result;
+}
+
+void BootAction::startPart(int partNumber, int playNumber) {
+    if (mLibStartPart == nullptr) return;
+
+    ALOGD("Entering boot_action_start_part");
+    mLibStartPart(partNumber, playNumber);
+    ALOGD("Returned from boot_action_start_part");
+}
+
+void BootAction::shutdown() {
+    ALOGD("Entering boot_action_shutdown");
+    mLibShutdown();
+    ALOGD("Returned from boot_action_shutdown");
+}
+
+bool BootAction::loadSymbol(const char* symbol, void** loaded) {
+    *loaded = dlsym(mLibHandle, symbol);
+    if (loaded == nullptr) {
+        ALOGE("Unable to load symbol : %s :: %s", symbol, dlerror());
+        return false;
+    }
+    return true;
+}
+
+
+bool BootAction::parseConfig(const std::string& config, std::string* path) {
+    auto lines = Split(config, "\n");
+
+    if (lines.size() < 1) {
+        ALOGE("Config format invalid, expected one line, found %d",
+              lines.size());
+        return false;
+    }
+
+    size_t lineNumber = 0;
+    auto& line1 = lines.at(lineNumber);
+    while (StartsWith(line1, "#")) {
+      if (lines.size() < ++lineNumber) {
+        ALOGE("Config file contains no non-comment lines.");
+        return false;
+      }
+      line1 = lines.at(lineNumber);
+    }
+
+    const std::string libraryNameToken("LIBRARY_NAME=");
+    if (!StartsWith(line1, libraryNameToken.c_str())) {
+        ALOGE("Invalid config format, expected second line to start  with %s "
+              "Instead found: %s", libraryNameToken.c_str(), line1.c_str());
+        return false;
+    }
+
+    std::string libraryName = line1.substr(libraryNameToken.length());
+
+    *path += "/";
+    *path += architectureDirectory();
+    *path += "/";
+    *path += libraryName;
+
+    return true;
+}
+
+const char* BootAction::architectureDirectory() {
+  switch(android_getCpuFamily()) {
+      case ANDROID_CPU_FAMILY_ARM:
+          return "arm";
+      case ANDROID_CPU_FAMILY_X86:
+          return "x86";
+      case ANDROID_CPU_FAMILY_MIPS:
+          return "mips";
+      case ANDROID_CPU_FAMILY_ARM64:
+          return "arm64";
+      case ANDROID_CPU_FAMILY_X86_64:
+          return "x86_64";
+      case ANDROID_CPU_FAMILY_MIPS64:
+          return "mips64";
+      default:
+          ALOGE("Unsupported cpu family: %d", android_getCpuFamily());
+          return "";
+  }
+}
+
+}  // namespace android