Remove unused needsadmin attribute

The needsadmin attribute is not used by Flatcar and it also wouldn't
have a use case in the future.
Remove it from the code base to focus on what makes sense.

src/update_engine/omaha_request_action.cc

@@ -42,7 +42,7 @@ static const char* kTagMaxFailureCountPerUrl = "MaxFailureCountPerUrl";
 // Deprecated: "MoreInfo"; See https://github.com/google/omaha/blob/main/doc/ServerProtocolV2.md
 // "And on the Mac, the Google Software Update Agent supports the following optional attributes": Prompt, MoreInfo
 // Deprecated: "Prompt"
-static const char* kTagNeedsAdmin = "needsadmin";
+// Deprecated: "needsadmin"; Not used by Flatcar
 static const char* kTagSha256 = "sha256";
 
 namespace {
@@ -591,8 +591,6 @@ bool OmahaRequestAction::ParseParams(xmlDoc* doc,
   }
 
   // Get the optional properties one by one.
-  output_object->needs_admin =
-      XmlGetProperty(pie_action_node, kTagNeedsAdmin) == "true";
 
   string max = XmlGetProperty(pie_action_node, kTagMaxFailureCountPerUrl);
   if (!strings::StringToUint(max, &output_object->max_failure_count_per_url))

src/update_engine/omaha_request_action_unittest.cc

@@ -72,7 +72,6 @@ string GetUpdateResponse2(const string& app_id,
                           const string& codebase,
                           const string& filename,
                           const string& hash,
-                          const string& needsadmin,
                           const string& size) {
   string response =
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?><response "
@@ -88,7 +87,6 @@ string GetUpdateResponse2(const string& app_id,
       "IsDelta=\"true\" "
       "IsDeltaPayload=\"true\" "
       "sha256=\"" + hash + "\" "
-      "needsadmin=\"" + needsadmin + "\" " +
       "/></actions></manifest></updatecheck></app></response>";
   LOG(INFO) << "Response = " << response;
   return response;
@@ -99,14 +97,12 @@ string GetUpdateResponse(const string& app_id,
                          const string& codebase,
                          const string& filename,
                          const string& hash,
-                         const string& needsadmin,
                          const string& size) {
   return GetUpdateResponse2(app_id,
                             display_version,
                             codebase,
                             filename,
                             hash,
-                            needsadmin,
                             size);
 }
 }  // namespace {}
@@ -207,7 +203,6 @@ TEST(OmahaRequestActionTest, ValidUpdateTest) {
                                         "http://code/base/",  // dl url
                                         "file.signed", // file name
                                         "HASH1234=",  // checksum
-                                        "false",  // needs admin
                                         "123"),  // size
                       -1,
                       false,  // ping_only
@@ -220,7 +215,6 @@ TEST(OmahaRequestActionTest, ValidUpdateTest) {
   EXPECT_EQ("http://code/base/file.signed", response.payload_urls[0]);
   EXPECT_EQ("HASH1234=", response.hash);
   EXPECT_EQ(123, response.size);
-  EXPECT_FALSE(response.needs_admin);
 }
 
 TEST(OmahaRequestActionTest, NoOutputPipeTest) {
@@ -340,7 +334,6 @@ TEST(OmahaRequestActionTest, MissingFieldTest) {
       "IsDelta=\"true\" "
       "IsDeltaPayload=\"false\" "
       "sha256=\"lkq34j5345\" "
-      "needsadmin=\"true\" "
       "/></actions></manifest></updatecheck></app></response>";
   LOG(INFO) << "Input Response = " << input_response;
 
@@ -358,7 +351,6 @@ TEST(OmahaRequestActionTest, MissingFieldTest) {
   EXPECT_EQ("http://missing/field/test/f", response.payload_urls[0]);
   EXPECT_EQ("lkq34j5345", response.hash);
   EXPECT_EQ(587, response.size);
-  EXPECT_TRUE(response.needs_admin);
 }
 
 TEST(OmahaRequestActionTest, ConcatUrlSlashTest) {
@@ -376,7 +368,6 @@ TEST(OmahaRequestActionTest, ConcatUrlSlashTest) {
       "IsDelta=\"true\" "
       "IsDeltaPayload=\"false\" "
       "sha256=\"lkq34j5345\" "
-      "needsadmin=\"true\" "
       "/></actions></manifest></updatecheck></app></response>";
   LOG(INFO) << "Input Response = " << input_response;
 
@@ -490,7 +481,6 @@ TEST(OmahaRequestActionTest, XmlDecodeTest) {
                                         "testthe&amp;codebase/",  // dl url
                                         "file.signed", // file name
                                         "HASH1234=", // checksum
-                                        "false",  // needs admin
                                         "123"),  // size
                       -1,
                       false,  // ping_only
@@ -511,7 +501,6 @@ TEST(OmahaRequestActionTest, ParseIntTest) {
                                         "thecodebase/",  // dl url
                                         "file.signed", // file name
                                         "HASH1234=", // checksum
-                                        "false",  // needs admin
                                         // overflows int32:
                                         "123123123123123"),  // size
                       -1,

src/update_engine/omaha_response.h

@@ -22,7 +22,6 @@ struct OmahaResponse {
         poll_interval(0),
         size(0),
         max_failure_count_per_url(0),
-        needs_admin(false),
         is_delta_payload(false),
         disable_payload_backoff(false) {}
 
@@ -45,7 +44,6 @@ struct OmahaResponse {
   // next URL in the current pass. This is a configurable value from the
   // Omaha Response attribute, if ever we need to fine tune the behavior.
   uint32_t max_failure_count_per_url;
-  bool needs_admin;
 
   // True if the payload described in this response is a delta payload.
   // False if it's a full payload.

src/update_engine/omaha_response_handler_action_unittest.cc

@@ -87,7 +87,6 @@ TEST_F(OmahaResponseHandlerActionTest, SimpleTest) {
     in.payload_urls.push_back("http://foo/the_update_a.b.c.d.tgz");
     in.hash = "HASH+";
     in.size = 12;
-    in.needs_admin = true;
     InstallPlan install_plan;
     EXPECT_TRUE(DoTest(in, "/dev/sda3", &install_plan));
     EXPECT_EQ(in.payload_urls[0], install_plan.download_url);
@@ -102,7 +101,6 @@ TEST_F(OmahaResponseHandlerActionTest, SimpleTest) {
     in.payload_urls.push_back("http://foo/the_update_a.b.c.d.tgz");
     in.hash = "HASHj+";
     in.size = 12;
-    in.needs_admin = true;
     InstallPlan install_plan;
     EXPECT_TRUE(DoTest(in, "/dev/sda4", &install_plan));
     EXPECT_EQ(in.payload_urls[0], install_plan.download_url);
@@ -117,7 +115,6 @@ TEST_F(OmahaResponseHandlerActionTest, SimpleTest) {
     in.payload_urls.push_back(kLongName);
     in.hash = "HASHj+";
     in.size = 12;
-    in.needs_admin = true;
     InstallPlan install_plan;
     EXPECT_TRUE(DoTest(in, "/dev/sda3", &install_plan));
     EXPECT_EQ(in.payload_urls[0], install_plan.download_url);