diff options
Diffstat (limited to 'java/com/android/dialer/oem/CequintPackageUtils.java')
| -rw-r--r-- | java/com/android/dialer/oem/CequintPackageUtils.java | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/java/com/android/dialer/oem/CequintPackageUtils.java b/java/com/android/dialer/oem/CequintPackageUtils.java new file mode 100644 index 000000000..66c900e8b --- /dev/null +++ b/java/com/android/dialer/oem/CequintPackageUtils.java @@ -0,0 +1,286 @@ +/* + * 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. + */ +package com.android.dialer.oem; + +import android.annotation.SuppressLint; +import android.content.pm.PackageInfo; +import android.content.pm.PackageManager; +import android.content.pm.ProviderInfo; +import android.content.pm.Signature; +import android.support.annotation.Nullable; +import com.android.dialer.common.LogUtil; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.security.NoSuchProviderException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +/** Utility class to verify Cequint package information. */ +final class CequintPackageUtils { + + private static final int SIGNED_1024 = 0; + private static final int SIGNED_2048 = 1; + private static final int SIGNED_VZW = 2; + private static final int SIGNED_SPRINT = 3; + + // Known Caller Name ID fingerprints + private static final List<byte[]> callerIdFingerprints = new ArrayList<>(); + + static { + // 1024 signed + callerIdFingerprints.add( + SIGNED_1024, + new byte[] { + 0x1A, + 0x0C, + (byte) 0xF8, + (byte) 0x8D, + 0x5B, + (byte) 0xE2, + 0x6A, + (byte) 0xED, + 0x50, + (byte) 0x85, + (byte) 0xFE, + (byte) 0x88, + (byte) 0xA0, + (byte) 0x9E, + (byte) 0xEC, + 0x25, + 0x1E, + (byte) 0xCA, + 0x16, + (byte) 0x97, + 0x50, + (byte) 0xDA, + 0x21, + (byte) 0xCC, + 0x18, + (byte) 0xC9, + (byte) 0x98, + (byte) 0xAF, + 0x26, + (byte) 0xCD, + 0x06, + 0x71 + }); + // 2048 signed + callerIdFingerprints.add( + SIGNED_2048, + new byte[] { + (byte) 0xCA, + 0x2F, + (byte) 0xAE, + (byte) 0xF4, + 0x09, + (byte) 0xEF, + 0x4C, + 0x79, + (byte) 0xF8, + 0x4C, + (byte) 0xD8, + (byte) 0x97, + (byte) 0xBF, + 0x1A, + 0x15, + 0x0F, + (byte) 0xF0, + 0x5E, + 0x54, + 0x74, + (byte) 0xB6, + 0x4A, + (byte) 0xCA, + (byte) 0xCD, + 0x05, + 0x7E, + 0x1E, + (byte) 0x98, + (byte) 0xC6, + 0x1F, + 0x5C, + 0x45 + }); + // VZW Package + callerIdFingerprints.add( + SIGNED_VZW, + new byte[] { + (byte) 0xE6, + 0x7A, + 0x0E, + (byte) 0xB0, + 0x76, + 0x4E, + (byte) 0xC3, + 0x28, + (byte) 0xB7, + (byte) 0xC1, + 0x1B, + 0x1B, + (byte) 0xD0, + (byte) 0x84, + 0x28, + (byte) 0xA6, + 0x16, + (byte) 0xD9, + (byte) 0xF3, + (byte) 0xEB, + (byte) 0xB0, + 0x20, + (byte) 0xA7, + (byte) 0xD8, + (byte) 0xDF, + 0x14, + 0x72, + (byte) 0x81, + 0x4C, + 0x13, + (byte) 0xF3, + (byte) 0xC9 + }); + + // Sprint Package + callerIdFingerprints.add( + SIGNED_SPRINT, + new byte[] { + 0x1A, + (byte) 0xBA, + (byte) 0xA2, + (byte) 0x84, + 0x0C, + 0x61, + (byte) 0x96, + 0x09, + (byte) 0x91, + 0x5E, + (byte) 0x91, + (byte) 0x95, + 0x3D, + 0x29, + 0x3C, + (byte) 0x90, + (byte) 0xEC, + (byte) 0xB4, + (byte) 0x89, + 0x1D, + (byte) 0xC0, + (byte) 0xB1, + 0x23, + 0x58, + (byte) 0x98, + (byte) 0xEB, + (byte) 0xE6, + (byte) 0xD4, + 0x09, + (byte) 0xE5, + (byte) 0x8E, + (byte) 0x9D + }); + } + + @SuppressLint("PackageManagerGetSignatures") + static boolean isCallerIdInstalled( + @Nullable PackageManager packageManager, @Nullable String authority) { + if (packageManager == null) { + LogUtil.i("CequintPackageUtils.isCallerIdInstalled", "failed to get PackageManager!"); + return false; + } + + ProviderInfo providerInfo = + packageManager.resolveContentProvider(authority, PackageManager.GET_META_DATA); + if (providerInfo == null) { + LogUtil.d( + "CequintPackageUtils.isCallerIdInstalled", + "no content provider with '%s' authority", + authority); + return false; + } + + String packageName = providerInfo.packageName; + if (packageName == null) { + LogUtil.w("CequintPackageUtils.isCallerIdInstalled", "can't get valid package name."); + return false; + } + + LogUtil.i( + "CequintPackageUtils.isCallerIdInstalled", + "content provider package name : " + packageName); + + try { + PackageInfo packageInfo = + packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES); + + Signature[] signatures = packageInfo.signatures; + if (signatures.length > 1) { + LogUtil.w( + "CequintPackageUtils.isCallerIdInstalled", "package has more than one signature."); + return false; + } + byte[] sha256Bytes = getSHA256(signatures[0].toByteArray()); + + for (int i = 0; i < callerIdFingerprints.size(); i++) { + if (Arrays.equals(callerIdFingerprints.get(i), sha256Bytes)) { + LogUtil.i( + "CequintPackageUtils.isCallerIdInstalled", + "this is %s Caller Name ID APK.", + getApkTypeString(i)); + return true; + } + } + } catch (PackageManager.NameNotFoundException e) { + LogUtil.e( + "CequintPackageUtils.isCallerIdInstalled", + "couldn't find package info for the package: %s", + packageName, + e); + } + LogUtil.w( + "CequintPackageUtils.isCallerIdInstalled", + "signature check failed for package: %s", + packageName); + return false; + } + + // Returns sha256 hash of the signature + @Nullable + private static byte[] getSHA256(byte[] sig) { + MessageDigest digest; + try { + digest = MessageDigest.getInstance("SHA256", "BC"); + } catch (NoSuchAlgorithmException | NoSuchProviderException e) { + LogUtil.e("CequintPackageUtils.getSHA256", "", e); + return null; + } + + digest.update(sig); + return digest.digest(); + } + + private static String getApkTypeString(int index) { + switch (index) { + case SIGNED_1024: + return "1024-signed"; + case SIGNED_2048: + return "2048-signed"; + case SIGNED_VZW: + return "VZWPackage"; + case SIGNED_SPRINT: + default: + return "SprintPackage"; + } + } +} |