From 0e1ebd84e27f5d4fa8bc6577705293251bcbac4f Mon Sep 17 00:00:00 2001 From: Hai Zhang Date: Wed, 17 May 2023 01:30:20 -0700 Subject: [PATCH] Preserve flags for non-runtime permissions upon package update. PermissionManagerServiceImpl.restorePermissionState() creates a new UID permission state for non-shared-UID packages that have been updated (i.e. replaced), however the existing logic for non-runtime permission never carried over the flags from the old state. This wasn't an issue for much older platforms because permission flags weren't used for non-runtime permissions, however since we are starting to use them for role protected permissions (ROLE_GRANTED) and app op permissions (USER_SET), we do need to preserver the permission flags. This change merges the logic for granting and revoking a non-runtime permission in restorePermissionState() into a single if branch, and appends the logic to copy the flag from the old state in that branch. Bug: 283006437 Test: PermissionFlagsTest#nonRuntimePermissionFlagsPreservedAfterReinstall Change-Id: Iea3c66710e7d28c6fc730b1939da64f1172b08db Merged-In: Iea3c66710e7d28c6fc730b1939da64f1172b08db --- .../permission/PermissionManagerService.java | 88 +++++++++++-------- 1 file changed, 50 insertions(+), 38 deletions(-) diff --git a/services/core/java/com/android/server/pm/permission/PermissionManagerService.java b/services/core/java/com/android/server/pm/permission/PermissionManagerService.java index 9d0b2543e5efc..dd8b96eab3d7f 100644 --- a/services/core/java/com/android/server/pm/permission/PermissionManagerService.java +++ b/services/core/java/com/android/server/pm/permission/PermissionManagerService.java @@ -2882,29 +2882,55 @@ public class PermissionManagerService extends IPermissionManager.Stub { + pkg.getPackageName()); } - if ((bp.isNormal() && shouldGrantNormalPermission) - || (bp.isSignature() - && (!bp.isPrivileged() || CollectionUtils.contains( - isPrivilegedPermissionAllowlisted, permName)) - && (CollectionUtils.contains(shouldGrantSignaturePermission, - permName) - || (((bp.isPrivileged() && CollectionUtils.contains( - shouldGrantPrivilegedPermissionIfWasGranted, - permName)) || bp.isDevelopment() || bp.isRole()) - && origState.isPermissionGranted(permName)))) - || (bp.isInternal() - && (!bp.isPrivileged() || CollectionUtils.contains( - isPrivilegedPermissionAllowlisted, permName)) - && (CollectionUtils.contains(shouldGrantInternalPermission, - permName) - || (((bp.isPrivileged() && CollectionUtils.contains( - shouldGrantPrivilegedPermissionIfWasGranted, - permName)) || bp.isDevelopment() || bp.isRole()) - && origState.isPermissionGranted(permName))))) { - // Grant an install permission. - if (uidState.grantPermission(bp)) { - changedInstallPermission = true; + if (bp.isNormal() || bp.isSignature() || bp.isInternal()) { + if ((bp.isNormal() && shouldGrantNormalPermission) + || (bp.isSignature() + && (!bp.isPrivileged() || CollectionUtils.contains( + isPrivilegedPermissionAllowlisted, permName)) + && (CollectionUtils.contains(shouldGrantSignaturePermission, + permName) + || (((bp.isPrivileged() && CollectionUtils.contains( + shouldGrantPrivilegedPermissionIfWasGranted, + permName)) || bp.isDevelopment() + || bp.isRole()) + && origState.isPermissionGranted( + permName)))) + || (bp.isInternal() + && (!bp.isPrivileged() || CollectionUtils.contains( + isPrivilegedPermissionAllowlisted, permName)) + && (CollectionUtils.contains(shouldGrantInternalPermission, + permName) + || (((bp.isPrivileged() && CollectionUtils.contains( + shouldGrantPrivilegedPermissionIfWasGranted, + permName)) || bp.isDevelopment() + || bp.isRole()) + && origState.isPermissionGranted( + permName))))) { + // Grant an install permission. + if (uidState.grantPermission(bp)) { + changedInstallPermission = true; + } + } else { + if (DEBUG_PERMISSIONS) { + boolean wasGranted = uidState.isPermissionGranted(bp.getName()); + if (wasGranted || bp.isAppOp()) { + Slog.i(TAG, (wasGranted ? "Un-granting" : "Not granting") + + " permission " + perm + + " from package " + friendlyName + + " (protectionLevel=" + bp.getProtectionLevel() + + " flags=0x" + + Integer.toHexString(PackageInfoUtils.appInfoFlags(pkg, + ps)) + + ")"); + } + } + if (uidState.revokePermission(bp)) { + changedInstallPermission = true; + } } + PermissionState origPermState = origState.getPermissionState(perm); + int flags = origPermState != null ? origPermState.getFlags() : 0; + uidState.updatePermissionFlags(bp, MASK_PERMISSION_FLAGS_ALL, flags); } else if (bp.isRuntime()) { boolean hardRestricted = bp.isHardRestricted(); boolean softRestricted = bp.isSoftRestricted(); @@ -3018,22 +3044,8 @@ public class PermissionManagerService extends IPermissionManager.Stub { uidState.updatePermissionFlags(bp, MASK_PERMISSION_FLAGS_ALL, flags); } else { - if (DEBUG_PERMISSIONS) { - boolean wasGranted = uidState.isPermissionGranted(bp.getName()); - if (wasGranted || bp.isAppOp()) { - Slog.i(TAG, (wasGranted ? "Un-granting" : "Not granting") - + " permission " + perm - + " from package " + friendlyName - + " (protectionLevel=" + bp.getProtectionLevel() - + " flags=0x" - + Integer.toHexString(PackageInfoUtils.appInfoFlags(pkg, - ps)) - + ")"); - } - } - if (uidState.removePermissionState(bp.getName())) { - changedInstallPermission = true; - } + Slog.wtf(LOG_TAG, "Unknown permission protection " + bp.getProtection() + + " for permission " + bp.getName()); } }