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-rw-r--r--crypto/vold_decrypt/vdc_pie.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/crypto/vold_decrypt/vdc_pie.cpp b/crypto/vold_decrypt/vdc_pie.cpp
new file mode 100644
index 000000000..a84071213
--- /dev/null
+++ b/crypto/vold_decrypt/vdc_pie.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <poll.h>
+
+#include <cutils/properties.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+
+#include "android/os/IVold.h"
+
+#include <binder/IServiceManager.h>
+#include <binder/Status.h>
+
+#include <private/android_filesystem_config.h>
+
+static void usage();
+
+static android::sp<android::IBinder> getServiceAggressive() {
+ static char prop_value[PROPERTY_VALUE_MAX];
+ property_get("init.svc.sys_vold", prop_value, "error");
+ if (strncmp(prop_value, "running", strlen("running")) != 0) {
+ printf("vdc_pie: vold is not running, init.svc.sys_vold=%s\n", prop_value);
+ exit(EINVAL);
+ }
+
+ android::sp<android::IBinder> res;
+ auto sm = android::defaultServiceManager();
+ auto name = android::String16("vold");
+ for (int i = 0; i < 5000; i++) {
+ res = sm->checkService(name);
+ if (res) {
+ printf("vdc_pie: Got vold, waited %d ms\n", (i * 10));
+ break;
+ }
+ usleep(10000); // 10ms
+ }
+ return res;
+}
+
+static int checkStatus(android::binder::Status status) {
+ if (status.isOk()) return 0;
+ std::string ret = status.toString8().string();
+#ifdef TWRP_INCLUDE_LOGCAT
+ printf("vdc_pie: Decryption failed, vold service returned: %s,"
+ " see logcat for details\n", ret.c_str());
+#else
+ printf("vdc_pie: Decryption failed, vold service returned: %s\n", ret.c_str());
+#endif
+ return -1;
+}
+
+int main(int argc, char** argv) {
+ std::vector<std::string> args(argv + 1, argv + argc);
+
+ if (args.size() > 0 && args[0] == "--wait") {
+ // Just ignore the --wait flag
+ args.erase(args.begin());
+ }
+
+ if (args.size() < 2) {
+ usage();
+ exit(5);
+ }
+ android::sp<android::IBinder> binder = getServiceAggressive();
+ if (!binder) {
+ printf("vdc_pie: Failed to obtain vold Binder\n");
+ exit(EINVAL);
+ }
+ auto vold = android::interface_cast<android::os::IVold>(binder);
+
+ if (args[0] == "cryptfs" && args[1] == "checkpw" && args.size() == 3) {
+ return checkStatus(vold->fdeCheckPassword(args[2]));
+ } else {
+ usage();
+ exit(EINVAL);
+ }
+ return 0;
+}
+
+static void usage() {
+ printf("vdc_pie: Usage: vold_pie cryptfs checkpw <password>\n");
+}