Add policies and enforce overlayable to header

If the fulfilled policies change without the contents of the target
and overlay APKs changing, the idmap for the overlay should be
regenerated. This change adds fulfilled policies and enforce
overlayable to the idmap header so that idmap2d can determine if the
polices or enforce overlayable changed from what was used to generate
the idmap.

Bug: 119328308
Test: idmap2_tests
Test: atest RegenerateIdmapTest

Change-Id: I96f970e82b5243be01b205ac2cb6ab249c6100bc
diff --git a/cmds/idmap2/tests/RawPrintVisitorTests.cpp b/cmds/idmap2/tests/RawPrintVisitorTests.cpp
index 5c5c81e..b268d5a 100644
--- a/cmds/idmap2/tests/RawPrintVisitorTests.cpp
+++ b/cmds/idmap2/tests/RawPrintVisitorTests.cpp
@@ -43,6 +43,8 @@
         << str << "--------";                                     \
   } while (0)
 
+#define ADDRESS "[0-9a-f]{8}: "
+
 TEST(RawPrintVisitorTests, CreateRawPrintVisitor) {
   fclose(stderr);  // silence expected warnings
 
@@ -62,15 +64,16 @@
   RawPrintVisitor visitor(stream);
   (*idmap)->accept(&visitor);
 
-#define ADDRESS "[0-9a-f]{8}: "
   ASSERT_CONTAINS_REGEX(ADDRESS "504d4449  magic\n", stream.str());
-  ASSERT_CONTAINS_REGEX(ADDRESS "00000003  version\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000004  version\n", stream.str());
   ASSERT_CONTAINS_REGEX(
       StringPrintf(ADDRESS "%s  target crc\n", android::idmap2::TestConstants::TARGET_CRC_STRING),
       stream.str());
   ASSERT_CONTAINS_REGEX(
       StringPrintf(ADDRESS "%s  overlay crc\n", android::idmap2::TestConstants::OVERLAY_CRC_STRING),
       stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000001  fulfilled policies: public\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "      01  enforce overlayable\n", stream.str());
   ASSERT_CONTAINS_REGEX(ADDRESS "      7f  target package id\n", stream.str());
   ASSERT_CONTAINS_REGEX(ADDRESS "      7f  overlay package id\n", stream.str());
   ASSERT_CONTAINS_REGEX(ADDRESS "00000004  target entry count\n", stream.str());
@@ -83,7 +86,6 @@
   ASSERT_CONTAINS_REGEX(ADDRESS "7f010000  value: integer/int1\n", stream.str());
   ASSERT_CONTAINS_REGEX(ADDRESS "7f010000  overlay id: integer/int1\n", stream.str());
   ASSERT_CONTAINS_REGEX(ADDRESS "7f010000  target id: integer/int1\n", stream.str());
-#undef ADDRESS
 }
 
 TEST(RawPrintVisitorTests, CreateRawPrintVisitorWithoutAccessToApks) {
@@ -99,22 +101,23 @@
   RawPrintVisitor visitor(stream);
   (*idmap)->accept(&visitor);
 
-  ASSERT_NE(stream.str().find("00000000: 504d4449  magic\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000004: 00000003  version\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000008: 00001234  target crc\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000000c: 00005678  overlay crc\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000021c:       7f  target package id\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000021d:       7f  overlay package id\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000021e: 00000003  target entry count\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000222: 00000003  overlay entry count\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000226: 00000000  string pool index offset\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000022a: 00000000  string pool byte length\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000022e: 7f020000  target id\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000232:       01  type: reference\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("00000233: 7f020000  value\n"), std::string::npos);
-
-  ASSERT_NE(stream.str().find("00000249: 7f020000  overlay id\n"), std::string::npos);
-  ASSERT_NE(stream.str().find("0000024d: 7f020000  target id\n"), std::string::npos);
+  ASSERT_CONTAINS_REGEX(ADDRESS "504d4449  magic\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000004  version\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00001234  target crc\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00005678  overlay crc\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000011  fulfilled policies: public|signature\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "      01  enforce overlayable\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "      7f  target package id\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "      7f  overlay package id\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000003  target entry count\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000003  overlay entry count\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000000  string pool index offset\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "00000000  string pool byte length\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "7f020000  target id\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "      01  type: reference\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "7f020000  value\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "7f020000  overlay id\n", stream.str());
+  ASSERT_CONTAINS_REGEX(ADDRESS "7f020000  target id\n", stream.str());
 }
 
 }  // namespace android::idmap2