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Check bootimage build fingerprint against vendor

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Prevents image mismatch issues

Change-Id: Ibd972cbcedf1000bfe2a8ceed7696a229365dc25
This commit is contained in:
Andres Morales
2015-01-14 10:07:55 -08:00
parent dbf22ccd92
commit cb3fd69458
1 changed files with 26 additions and 17 deletions
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43
core/java/android/os/Build.java
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@@ -91,7 +91,7 @@ public class Build {
/** The name of the hardware (from the kernel command line or /proc). */
public static final String HARDWARE = getString("ro.hardware");
/** A hardware serial number, if available. Alphanumeric only, case-insensitive. */
/** A hardware serial number, if available. Alphanumeric only, case-insensitive. */
public static final String SERIAL = getString("ro.serialno");
/**
@@ -159,7 +159,7 @@ public class Build {
/**
* The user-visible SDK version of the framework in its raw String
* representation; use {@link #SDK_INT} instead.
*
*
* @deprecated Use {@link #SDK_INT} to easily get this as an integer.
*/
@Deprecated
@@ -207,25 +207,25 @@ public class Build {
* not yet turned into an official release.
*/
public static final int CUR_DEVELOPMENT = 10000;
/**
* October 2008: The original, first, version of Android. Yay!
*/
public static final int BASE = 1;
/**
* February 2009: First Android update, officially called 1.1.
*/
public static final int BASE_1_1 = 2;
/**
* May 2009: Android 1.5.
*/
public static final int CUPCAKE = 3;
/**
* September 2009: Android 1.6.
*
*
* <p>Applications targeting this or a later release will get these
* new changes in behavior:</p>
* <ul>
@@ -247,10 +247,10 @@ public class Build {
* </ul>
*/
public static final int DONUT = 4;
/**
* November 2009: Android 2.0
*
*
* <p>Applications targeting this or a later release will get these
* new changes in behavior:</p>
* <ul>
@@ -267,22 +267,22 @@ public class Build {
* </ul>
*/
public static final int ECLAIR = 5;
/**
* December 2009: Android 2.0.1
*/
public static final int ECLAIR_0_1 = 6;
/**
* January 2010: Android 2.1
*/
public static final int ECLAIR_MR1 = 7;
/**
* June 2010: Android 2.2
*/
public static final int FROYO = 8;
/**
* November 2010: Android 2.3
*
@@ -294,7 +294,7 @@ public class Build {
* </ul>
*/
public static final int GINGERBREAD = 9;
/**
* February 2011: Android 2.3.3.
*/
@@ -339,12 +339,12 @@ public class Build {
* </ul>
*/
public static final int HONEYCOMB = 11;
/**
* May 2011: Android 3.1.
*/
public static final int HONEYCOMB_MR1 = 12;
/**
* June 2011: Android 3.2.
*
@@ -598,7 +598,7 @@ public class Build {
*/
public static final int LOLLIPOP_MR1 = 22;
}
/** The type of build, like "user" or "eng". */
public static final String TYPE = getString("ro.build.type");
@@ -653,6 +653,7 @@ public class Build {
public static boolean isFingerprintConsistent() {
final String system = SystemProperties.get("ro.build.fingerprint");
final String vendor = SystemProperties.get("ro.vendor.build.fingerprint");
final String bootimage = SystemProperties.get("ro.bootimage.build.fingerprint");
if (TextUtils.isEmpty(system)) {
Slog.e(TAG, "Required ro.build.fingerprint is empty!");
@@ -667,6 +668,14 @@ public class Build {
}
}
if (!TextUtils.isEmpty(bootimage)) {
if (!Objects.equals(vendor, bootimage)) {
Slog.e(TAG, "Mismatched fingerprints; system and vendor reported " + system
+ " but bootimage reported " + bootimage);
return false;
}
}
return true;
}