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https://github.com/Divested-Mobile/DivestOS-Build.git
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77 lines
3.4 KiB
Diff
77 lines
3.4 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jing Ji <jji@google.com>
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Date: Thu, 4 Aug 2022 11:36:26 -0700
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Subject: [PATCH] DO NOT MERGE: Context#startInstrumentation could be started
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from SHELL only now.
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Or, if an instrumentation starts another instrumentation and so on,
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and the original instrumentation is started from SHELL, allow all
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Context#startInstrumentation calls in this chain.
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Otherwise, it'll throw a SecurityException.
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Bug: 237766679
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Test: atest CtsAppTestCases:InstrumentationTest
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Merged-In: Ia08f225c21a3933067d066a578ea4af9c23e7d4c
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Merged-In: I1b76f61c5fd6c9f7e738978592260945a606f40c
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Merged-In: I3ea7aa27bd776fec546908a37f667f680da9c892
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Change-Id: I7ca7345b064e8e74f7037b8fa3ed45bb6423e406
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(cherry picked from commit 8c90891a38ecb5047e115e13baf700a8b486a5d1)
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Merged-In: I7ca7345b064e8e74f7037b8fa3ed45bb6423e406
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---
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.../server/am/ActivityManagerService.java | 34 +++++++++++++++++++
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1 file changed, 34 insertions(+)
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diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
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index bb78408617b8..efbccb3b8f94 100644
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--- a/services/core/java/com/android/server/am/ActivityManagerService.java
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+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
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@@ -15761,6 +15761,17 @@ public class ActivityManagerService extends IActivityManager.Stub
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reportStartInstrumentationFailureLocked(watcher, className, msg);
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throw new SecurityException(msg);
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}
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+ if (!Build.IS_DEBUGGABLE && callingUid != ROOT_UID && callingUid != SHELL_UID
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+ && callingUid != SYSTEM_UID && !hasActiveInstrumentationLocked(callingPid)) {
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+ // If it's not debug build and not called from root/shell/system uid, reject it.
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+ final String msg = "Permission Denial: instrumentation test "
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+ + className + " from pid=" + callingPid + ", uid=" + callingUid
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+ + ", pkgName=" + getPackageNameByPid(callingPid)
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+ + " not allowed because it's not started from SHELL";
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+ Slog.wtfQuiet(TAG, msg);
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+ reportStartInstrumentationFailureLocked(watcher, className, msg);
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+ throw new SecurityException(msg);
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+ }
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ActiveInstrumentation activeInstr = new ActiveInstrumentation(this);
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activeInstr.mClass = className;
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@@ -15817,6 +15828,29 @@ public class ActivityManagerService extends IActivityManager.Stub
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return true;
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}
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+ @GuardedBy("this")
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+ private boolean hasActiveInstrumentationLocked(int pid) {
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+ if (pid == 0) {
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+ return false;
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+ }
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+ synchronized (mPidsSelfLocked) {
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+ ProcessRecord process = mPidsSelfLocked.get(pid);
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+ return process != null && process.getActiveInstrumentation() != null;
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+ }
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+ }
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+
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+ private String getPackageNameByPid(int pid) {
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+ synchronized (mPidsSelfLocked) {
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+ final ProcessRecord app = mPidsSelfLocked.get(pid);
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+
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+ if (app != null && app.info != null) {
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+ return app.info.packageName;
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+ }
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+
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+ return null;
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+ }
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+ }
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+
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private boolean isCallerShell() {
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final int callingUid = Binder.getCallingUid();
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return callingUid == SHELL_UID || callingUid == ROOT_UID;
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