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Extract code into methods from recordMeasurementsForAllPackages

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Bug: 265244016
Test: Manual
Change-Id: I993686a614624a6eca2fe71942ffd9a26594f9b7
This commit is contained in:
Victor Hsieh
2023-01-13 15:33:55 -08:00
parent 5c85be467c
commit ad47630408
1 changed files with 91 additions and 62 deletions
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153
services/core/java/com/android/server/BinaryTransparencyService.java
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@@ -278,16 +278,54 @@ public class BinaryTransparencyService extends SystemService {
+ " and is now updated to: " + currentTimeMs);
mMeasurementsLastRecordedMs = currentTimeMs;
PackageManager pm = mContext.getPackageManager();
Set<String> packagesMeasured = new HashSet<>();
// measure all APEXs first
if (DEBUG) {
Slog.d(TAG, "Measuring APEXs...");
}
for (PackageInfo packageInfo : getCurrentInstalledApexs()) {
packagesMeasured.add(packageInfo.packageName);
List<IBinaryTransparencyService.ApexInfo> allApexInfo = collectAllApexInfo();
for (IBinaryTransparencyService.ApexInfo apexInfo : allApexInfo) {
packagesMeasured.add(apexInfo.packageName);
recordApexInfo(apexInfo);
}
if (DEBUG) {
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages after considering APEXs.");
}
// proceed with all preloaded apps
List<IBinaryTransparencyService.AppInfo> allUpdatedPreloadInfo =
collectAllUpdatedPreloadInfo(packagesMeasured);
for (IBinaryTransparencyService.AppInfo appInfo : allUpdatedPreloadInfo) {
packagesMeasured.add(appInfo.packageName);
writeAppInfoToLog(appInfo);
}
if (DEBUG) {
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages after considering preloads");
}
if (CompatChanges.isChangeEnabled(LOG_MBA_INFO)) {
// lastly measure all newly installed MBAs
List<IBinaryTransparencyService.AppInfo> allMbaInfo =
collectAllMbaInfo(packagesMeasured);
for (IBinaryTransparencyService.AppInfo appInfo : allUpdatedPreloadInfo) {
packagesMeasured.add(appInfo.packageName);
writeAppInfoToLog(appInfo);
}
}
if (DEBUG) {
long timeSpentMeasuring = System.currentTimeMillis() - currentTimeMs;
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages altogether in " + timeSpentMeasuring + "ms");
}
}
private List<IBinaryTransparencyService.ApexInfo> collectAllApexInfo() {
var results = new ArrayList<IBinaryTransparencyService.ApexInfo>();
for (PackageInfo packageInfo : getCurrentInstalledApexs()) {
Bundle apexMeasurement = measurePackage(packageInfo);
var apexInfo = new IBinaryTransparencyService.ApexInfo();
@@ -299,22 +337,21 @@ public class BinaryTransparencyService extends SystemService {
apexInfo.signerDigests =
computePackageSignerSha256Digests(packageInfo.signingInfo);
recordApexInfo(apexInfo);
}
if (DEBUG) {
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages after considering APEXs.");
results.add(apexInfo);
}
return results;
}
// proceed with all preloaded apps
private List<IBinaryTransparencyService.AppInfo> collectAllUpdatedPreloadInfo(
Set<String> packagesToSkip) {
var results = new ArrayList<IBinaryTransparencyService.AppInfo>();
PackageManager pm = mContext.getPackageManager();
for (PackageInfo packageInfo : pm.getInstalledPackages(
PackageManager.PackageInfoFlags.of(PackageManager.MATCH_FACTORY_ONLY
| PackageManager.GET_SIGNING_CERTIFICATES))) {
if (packagesMeasured.contains(packageInfo.packageName)) {
if (packagesToSkip.contains(packageInfo.packageName)) {
continue;
}
packagesMeasured.add(packageInfo.packageName);
int mbaStatus = MBA_STATUS_PRELOADED;
if (packageInfo.signingInfo == null) {
Slog.d(TAG, "Preload " + packageInfo.packageName + " at "
@@ -347,61 +384,53 @@ public class BinaryTransparencyService extends SystemService {
computePackageSignerSha256Digests(packageInfo.signingInfo);
appInfo.mbaStatus = mbaStatus;
writeAppInfoToLog(appInfo);
results.add(appInfo);
}
}
if (DEBUG) {
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages after considering preloads");
}
return results;
}
if (CompatChanges.isChangeEnabled(LOG_MBA_INFO)) {
// lastly measure all newly installed MBAs
for (PackageInfo packageInfo : getNewlyInstalledMbas()) {
if (packagesMeasured.contains(packageInfo.packageName)) {
continue;
}
packagesMeasured.add(packageInfo.packageName);
Bundle packageMeasurement = measurePackage(packageInfo);
if (DEBUG) {
Slog.d(TAG,
"Extracting InstallSourceInfo for " + packageInfo.packageName);
}
var appInfo = new IBinaryTransparencyService.AppInfo();
appInfo.packageName = packageInfo.packageName;
appInfo.longVersion = packageInfo.getLongVersionCode();
appInfo.digest = packageMeasurement.getByteArray(BUNDLE_CONTENT_DIGEST);
appInfo.digestAlgorithm =
packageMeasurement.getInt(BUNDLE_CONTENT_DIGEST_ALGORITHM);
appInfo.signerDigests =
computePackageSignerSha256Digests(packageInfo.signingInfo);
appInfo.mbaStatus = MBA_STATUS_NEW_INSTALL;
// extract package's InstallSourceInfo
InstallSourceInfo installSourceInfo = getInstallSourceInfo(
packageInfo.packageName);
if (installSourceInfo != null) {
appInfo.initiator = installSourceInfo.getInitiatingPackageName();
SigningInfo initiatorSignerInfo =
installSourceInfo.getInitiatingPackageSigningInfo();
if (initiatorSignerInfo != null) {
appInfo.initiatorSignerDigests =
computePackageSignerSha256Digests(initiatorSignerInfo);
}
appInfo.installer = installSourceInfo.getInstallingPackageName();
appInfo.originator = installSourceInfo.getOriginatingPackageName();
}
writeAppInfoToLog(appInfo);
private List<IBinaryTransparencyService.AppInfo> collectAllMbaInfo(
Set<String> packagesToSkip) {
var results = new ArrayList<IBinaryTransparencyService.AppInfo>();
for (PackageInfo packageInfo : getNewlyInstalledMbas()) {
if (packagesToSkip.contains(packageInfo.packageName)) {
continue;
}
Bundle packageMeasurement = measurePackage(packageInfo);
if (DEBUG) {
Slog.d(TAG,
"Extracting InstallSourceInfo for " + packageInfo.packageName);
}
var appInfo = new IBinaryTransparencyService.AppInfo();
appInfo.packageName = packageInfo.packageName;
appInfo.longVersion = packageInfo.getLongVersionCode();
appInfo.digest = packageMeasurement.getByteArray(BUNDLE_CONTENT_DIGEST);
appInfo.digestAlgorithm =
packageMeasurement.getInt(BUNDLE_CONTENT_DIGEST_ALGORITHM);
appInfo.signerDigests =
computePackageSignerSha256Digests(packageInfo.signingInfo);
appInfo.mbaStatus = MBA_STATUS_NEW_INSTALL;
// extract package's InstallSourceInfo
InstallSourceInfo installSourceInfo = getInstallSourceInfo(
packageInfo.packageName);
if (installSourceInfo != null) {
appInfo.initiator = installSourceInfo.getInitiatingPackageName();
SigningInfo initiatorSignerInfo =
installSourceInfo.getInitiatingPackageSigningInfo();
if (initiatorSignerInfo != null) {
appInfo.initiatorSignerDigests =
computePackageSignerSha256Digests(initiatorSignerInfo);
}
appInfo.installer = installSourceInfo.getInstallingPackageName();
appInfo.originator = installSourceInfo.getOriginatingPackageName();
}
results.add(appInfo);
}
if (DEBUG) {
long timeSpentMeasuring = System.currentTimeMillis() - currentTimeMs;
Slog.d(TAG, "Measured " + packagesMeasured.size()
+ " packages altogether in " + timeSpentMeasuring + "ms");
}
return results;
}
private void recordApexInfo(IBinaryTransparencyService.ApexInfo apexInfo) {