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Commit 8640d0c7 authored by Christopher Tate's avatar Christopher Tate
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Only autoVerify at install for new hosts

Re-run app link verification at update time only when the set of hosts
has expanded.  Intentionally revoke verify history when an app stops
using autoVerify, as a one-time measure to place it back into the
non-autoverify model for tracking the user's launch preferences.  If the
app starts using autoVerify again later, it behaves identically to an
app that has never done so before.

Bug: 151475497
Bug: 146204120
Test: described on master CL

Merged-In: I200d85085ce79842a3ed39377d1f75ec381c8991
Change-Id: Ibaf087946966ad82d60c7b255e3ee75990716b63
parent 5fe6635e
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+84 −35
Original line number Original line Diff line number Diff line
@@ -1142,13 +1142,6 @@ public class PackageManagerService extends IPackageManager.Stub
                    int updatedStatus = INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED;
                    int updatedStatus = INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED;
                    boolean needUpdate = false;
                    boolean needUpdate = false;
                    if (DEBUG_DOMAIN_VERIFICATION) {
                        Slog.d(TAG,
                                "Updating IntentFilterVerificationInfo for package " + packageName
                                + " verificationId:" + verificationId
                                + " verified=" + verified);
                    }
                    // In a success case, we promote from undefined or ASK to ALWAYS.  This
                    // In a success case, we promote from undefined or ASK to ALWAYS.  This
                    // supports a flow where the app fails validation but then ships an updated
                    // supports a flow where the app fails validation but then ships an updated
                    // APK that passes, and therefore deserves to be in ALWAYS.
                    // APK that passes, and therefore deserves to be in ALWAYS.
@@ -18121,72 +18114,126 @@ public class PackageManagerService extends IPackageManager.Stub
        int count = 0;
        int count = 0;
        final String packageName = pkg.packageName;
        final String packageName = pkg.packageName;
        boolean handlesWebUris = false;
        ArraySet<String> domains = new ArraySet<>();
        final boolean previouslyVerified;
        boolean hostSetExpanded = false;
        boolean needToRunVerify = false;
        synchronized (mPackages) {
        synchronized (mPackages) {
            // If this is a new install and we see that we've already run verification for this
            // If this is a new install and we see that we've already run verification for this
            // package, we have nothing to do: it means the state was restored from backup.
            // package, we have nothing to do: it means the state was restored from backup.
            if (!replacing) {
            IntentFilterVerificationInfo ivi =
            IntentFilterVerificationInfo ivi =
                    mSettings.getIntentFilterVerificationLPr(packageName);
                    mSettings.getIntentFilterVerificationLPr(packageName);
                if (ivi != null) {
            previouslyVerified = (ivi != null);
            if (!replacing && previouslyVerified) {
                if (DEBUG_DOMAIN_VERIFICATION) {
                if (DEBUG_DOMAIN_VERIFICATION) {
                    Slog.i(TAG, "Package " + packageName + " already verified: status="
                    Slog.i(TAG, "Package " + packageName + " already verified: status="
                            + ivi.getStatusString());
                            + ivi.getStatusString());
                }
                }
                return;
                return;
            }
            }
            if (DEBUG_DOMAIN_VERIFICATION) {
                Slog.i(TAG, "    Previous verified hosts: "
                        + (ivi == null ? "[none]" : ivi.getDomainsString()));
            }
            }
            // If any filters need to be verified, then all need to be.
            // If any filters need to be verified, then all need to be.  In addition, we need to
            boolean needToVerify = false;
            // know whether an updating app has any web navigation intent filters, to re-
            // examine handling policy even if not re-verifying.
            final boolean needsVerification = needsNetworkVerificationLPr(packageName);
            for (PackageParser.Activity a : pkg.activities) {
            for (PackageParser.Activity a : pkg.activities) {
                for (ActivityIntentInfo filter : a.intents) {
                for (ActivityIntentInfo filter : a.intents) {
                    if (filter.needsVerification() && needsNetworkVerificationLPr(filter)) {
                    if (filter.handlesWebUris(true)) {
                        handlesWebUris = true;
                    }
                    if (needsVerification && filter.needsVerification()) {
                        if (DEBUG_DOMAIN_VERIFICATION) {
                        if (DEBUG_DOMAIN_VERIFICATION) {
                            Slog.d(TAG,
                            Slog.d(TAG, "autoVerify requested, processing all filters");
                                    "Intent filter needs verification, so processing all filters");
                        }
                        }
                        needToVerify = true;
                        needToRunVerify = true;
                        // It's safe to break out here because filter.needsVerification()
                        // can only be true if filter.handlesWebUris(true) returned true, so
                        // we've already noted that.
                        break;
                        break;
                    }
                    }
                }
                }
            }
            }
            if (needToVerify) {
            // Compare the new set of recognized hosts if the app is either requesting
            // autoVerify or has previously used autoVerify but no longer does.
            if (needToRunVerify || previouslyVerified) {
                final int verificationId = mIntentFilterVerificationToken++;
                final int verificationId = mIntentFilterVerificationToken++;
                for (PackageParser.Activity a : pkg.activities) {
                for (PackageParser.Activity a : pkg.activities) {
                    for (ActivityIntentInfo filter : a.intents) {
                    for (ActivityIntentInfo filter : a.intents) {
                        // Run verification against hosts mentioned in any web-nav intent filter,
                        // Run verification against hosts mentioned in any web-nav intent filter,
                        // even if the filter matches non-web schemes as well
                        // even if the filter matches non-web schemes as well
                        if (filter.handlesWebUris(false) && needsNetworkVerificationLPr(filter)) {
                        if (filter.handlesWebUris(false /*onlyWebSchemes*/)) {
                            if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG,
                            if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG,
                                    "Verification needed for IntentFilter:" + filter.toString());
                                    "Verification needed for IntentFilter:" + filter.toString());
                            mIntentFilterVerifier.addOneIntentFilterVerification(
                            mIntentFilterVerifier.addOneIntentFilterVerification(
                                    verifierUid, userId, verificationId, filter, packageName);
                                    verifierUid, userId, verificationId, filter, packageName);
                            domains.addAll(filter.getHostsList());
                            count++;
                            count++;
                        }
                        }
                    }
                    }
                }
                }
            }
            }
            if (DEBUG_DOMAIN_VERIFICATION) {
                Slog.i(TAG, "    Update published hosts: " + domains.toString());
            }
            // If we've previously verified this same host set (or a subset), we can trust that
            // a current ALWAYS policy is still applicable.  If this is the case, we're done.
            // (If we aren't in ALWAYS, we want to reverify to allow for apps that had failing
            // hosts in their intent filters, then pushed a new apk that removed them and now
            // passes.)
            //
            // Cases:
            //   + still autoVerify (needToRunVerify):
            //      - preserve current state if all of: unexpanded, in always
            //      - otherwise rerun as usual (fall through)
            //   + no longer autoVerify (alreadyVerified && !needToRunVerify)
            //      - wipe verification history always
            //      - preserve current state if all of: unexpanded, in always
            hostSetExpanded = !previouslyVerified
                    || (ivi != null && !ivi.getDomains().containsAll(domains));
            final int currentPolicy =
                    mSettings.getIntentFilterVerificationStatusLPr(packageName, userId);
            final boolean keepCurState = !hostSetExpanded
                    && currentPolicy == INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS;
            if (needToRunVerify && keepCurState) {
                if (DEBUG_DOMAIN_VERIFICATION) {
                    Slog.i(TAG, "Host set not expanding + ALWAYS -> no need to reverify");
                }
                ivi.setDomains(domains);
                scheduleWriteSettingsLocked();
                return;
            } else if (previouslyVerified && !needToRunVerify) {
                // Prior autoVerify state but not requesting it now.  Clear autoVerify history,
                // and preserve the always policy iff the host set is not expanding.
                clearIntentFilterVerificationsLPw(packageName, userId, !keepCurState);
                return;
            }
        }
        }
        if (count > 0) {
        if (needToRunVerify && count > 0) {
            // app requested autoVerify and has at least one matching intent filter
            if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG, "Starting " + count
            if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG, "Starting " + count
                    + " IntentFilter verification" + (count > 1 ? "s" : "")
                    + " IntentFilter verification" + (count > 1 ? "s" : "")
                    +  " for userId:" + userId);
                    +  " for userId:" + userId);
            mIntentFilterVerifier.startVerifications(userId);
            mIntentFilterVerifier.startVerifications(userId);
        } else {
        } else {
            if (DEBUG_DOMAIN_VERIFICATION) {
            if (DEBUG_DOMAIN_VERIFICATION) {
                Slog.d(TAG, "No filters or not all autoVerify for " + packageName);
                Slog.d(TAG, "No web filters or no new host policy for " + packageName);
            }
            }
        }
        }
    }
    }
    @GuardedBy("mPackages")
    @GuardedBy("mPackages")
    private boolean needsNetworkVerificationLPr(ActivityIntentInfo filter) {
    private boolean needsNetworkVerificationLPr(String packageName) {
        final ComponentName cn  = filter.activity.getComponentName();
        final String packageName = cn.getPackageName();
        IntentFilterVerificationInfo ivi = mSettings.getIntentFilterVerificationLPr(
        IntentFilterVerificationInfo ivi = mSettings.getIntentFilterVerificationLPr(
                packageName);
                packageName);
        if (ivi == null) {
        if (ivi == null) {
@@ -18932,7 +18979,7 @@ public class PackageManagerService extends IPackageManager.Stub
            if ((flags & PackageManager.DELETE_KEEP_DATA) == 0) {
            if ((flags & PackageManager.DELETE_KEEP_DATA) == 0) {
                final SparseBooleanArray changedUsers = new SparseBooleanArray();
                final SparseBooleanArray changedUsers = new SparseBooleanArray();
                synchronized (mPackages) {
                synchronized (mPackages) {
                    clearIntentFilterVerificationsLPw(deletedPs.name, UserHandle.USER_ALL);
                    clearIntentFilterVerificationsLPw(deletedPs.name, UserHandle.USER_ALL, true);
                    clearDefaultBrowserIfNeeded(packageName);
                    clearDefaultBrowserIfNeeded(packageName);
                    mSettings.mKeySetManagerService.removeAppKeySetDataLPw(packageName);
                    mSettings.mKeySetManagerService.removeAppKeySetDataLPw(packageName);
                    removedAppId = mSettings.removePackageLPw(packageName);
                    removedAppId = mSettings.removePackageLPw(packageName);
@@ -20437,13 +20484,14 @@ public class PackageManagerService extends IPackageManager.Stub
        final int packageCount = mPackages.size();
        final int packageCount = mPackages.size();
        for (int i = 0; i < packageCount; i++) {
        for (int i = 0; i < packageCount; i++) {
            PackageParser.Package pkg = mPackages.valueAt(i);
            PackageParser.Package pkg = mPackages.valueAt(i);
            clearIntentFilterVerificationsLPw(pkg.packageName, userId);
            clearIntentFilterVerificationsLPw(pkg.packageName, userId, true);
        }
        }
    }
    }
    /** This method takes a specific user id as well as UserHandle.USER_ALL. */
    /** This method takes a specific user id as well as UserHandle.USER_ALL. */
    @GuardedBy("mPackages")
    @GuardedBy("mPackages")
    void clearIntentFilterVerificationsLPw(String packageName, int userId) {
    void clearIntentFilterVerificationsLPw(String packageName, int userId,
            boolean alsoResetStatus) {
        if (userId == UserHandle.USER_ALL) {
        if (userId == UserHandle.USER_ALL) {
            if (mSettings.removeIntentFilterVerificationLPw(packageName,
            if (mSettings.removeIntentFilterVerificationLPw(packageName,
                    sUserManager.getUserIds())) {
                    sUserManager.getUserIds())) {
@@ -20452,7 +20500,8 @@ public class PackageManagerService extends IPackageManager.Stub
                }
                }
            }
            }
        } else {
        } else {
            if (mSettings.removeIntentFilterVerificationLPw(packageName, userId)) {
            if (mSettings.removeIntentFilterVerificationLPw(packageName, userId,
                    alsoResetStatus)) {
                scheduleWritePackageRestrictionsLocked(userId);
                scheduleWritePackageRestrictionsLocked(userId);
            }
            }
        }
        }
+7 −3
Original line number Original line Diff line number Diff line
@@ -1243,7 +1243,8 @@ public final class Settings {
        return result;
        return result;
    }
    }


    boolean removeIntentFilterVerificationLPw(String packageName, int userId) {
    boolean removeIntentFilterVerificationLPw(String packageName, int userId,
            boolean alsoResetStatus) {
        PackageSetting ps = mPackages.get(packageName);
        PackageSetting ps = mPackages.get(packageName);
        if (ps == null) {
        if (ps == null) {
            if (DEBUG_DOMAIN_VERIFICATION) {
            if (DEBUG_DOMAIN_VERIFICATION) {
@@ -1251,14 +1252,17 @@ public final class Settings {
            }
            }
            return false;
            return false;
        }
        }
        if (alsoResetStatus) {
            ps.clearDomainVerificationStatusForUser(userId);
            ps.clearDomainVerificationStatusForUser(userId);
        }
        ps.setIntentFilterVerificationInfo(null);
        return true;
        return true;
    }
    }


    boolean removeIntentFilterVerificationLPw(String packageName, int[] userIds) {
    boolean removeIntentFilterVerificationLPw(String packageName, int[] userIds) {
        boolean result = false;
        boolean result = false;
        for (int userId : userIds) {
        for (int userId : userIds) {
            result |= removeIntentFilterVerificationLPw(packageName, userId);
            result |= removeIntentFilterVerificationLPw(packageName, userId, true);
        }
        }
        return result;
        return result;
    }
    }