sandbox: extract SetuidSandboxHost code from SetuidSandboxClient

sandbox/linux/suid/client/setuid_sandbox_host_unittest.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "sandbox/linux/suid/client/setuid_sandbox_host.h"
+
+#include <string>
+
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
-#include "sandbox/linux/suid/client/setuid_sandbox_client.h"
 #include "sandbox/linux/suid/common/sandbox.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace sandbox {
 
-TEST(SetuidSandboxClient, SetupLaunchEnvironment) {
+TEST(SetuidSandboxHost, SetupLaunchEnvironment) {
   const char kTestValue[] = "This is a test";
   scoped_ptr<base::Environment> env(base::Environment::Create());
   EXPECT_TRUE(env != NULL);
 
   std::string saved_ld_preload;
   bool environment_had_ld_preload;
   // First, back-up the real LD_PRELOAD if any.
   environment_had_ld_preload = env->GetVar("LD_PRELOAD", &saved_ld_preload);
   // Setup environment variables to save or not save.
   EXPECT_TRUE(env->SetVar("LD_PRELOAD", kTestValue));
   EXPECT_TRUE(env->UnSetVar("LD_ORIGIN_PATH"));
 
-  scoped_ptr<SetuidSandboxClient>
-      sandbox_client(SetuidSandboxClient::Create());
-  EXPECT_TRUE(sandbox_client != NULL);
+  scoped_ptr<SetuidSandboxHost> sandbox_host(SetuidSandboxHost::Create());
+  EXPECT_TRUE(sandbox_host != NULL);
 
   // Make sure the environment is clean.
   EXPECT_TRUE(env->UnSetVar(kSandboxEnvironmentApiRequest));
   EXPECT_TRUE(env->UnSetVar(kSandboxEnvironmentApiProvides));
 
-  sandbox_client->SetupLaunchEnvironment();
+  sandbox_host->SetupLaunchEnvironment();
 
   // Check if the requested API environment was set.
   std::string api_request;
   EXPECT_TRUE(env->GetVar(kSandboxEnvironmentApiRequest, &api_request));
   int api_request_num;
   EXPECT_TRUE(base::StringToInt(api_request, &api_request_num));
   EXPECT_EQ(api_request_num, kSUIDSandboxApiNumber);
 
   // Now check if LD_PRELOAD was saved to SANDBOX_LD_PRELOAD.
   std::string sandbox_ld_preload;
   EXPECT_TRUE(env->GetVar("SANDBOX_LD_PRELOAD", &sandbox_ld_preload));
   EXPECT_EQ(sandbox_ld_preload, kTestValue);
 
   // Check that LD_ORIGIN_PATH was not saved.
   EXPECT_FALSE(env->HasVar("SANDBOX_LD_ORIGIN_PATH"));
 
   // We should not forget to restore LD_PRELOAD at the end, or this environment
   // variable will affect the next running tests!
   if (environment_had_ld_preload) {
     EXPECT_TRUE(env->SetVar("LD_PRELOAD", saved_ld_preload));
   } else {
     EXPECT_TRUE(env->UnSetVar("LD_PRELOAD"));
   }
 }
 
-TEST(SetuidSandboxClient, SandboxedClientAPI) {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  EXPECT_TRUE(env != NULL);
-
-  scoped_ptr<SetuidSandboxClient>
-      sandbox_client(SetuidSandboxClient::Create());
-  EXPECT_TRUE(sandbox_client != NULL);
-
-  // Set-up a fake environment as if we went through the setuid sandbox.
-  EXPECT_TRUE(env->SetVar(kSandboxEnvironmentApiProvides,
-              base::IntToString(kSUIDSandboxApiNumber)));
-  EXPECT_TRUE(env->SetVar(kSandboxDescriptorEnvironmentVarName, "1"));
-  EXPECT_TRUE(env->SetVar(kSandboxPIDNSEnvironmentVarName, "1"));
-  EXPECT_TRUE(env->UnSetVar(kSandboxNETNSEnvironmentVarName));
-
-  // Check the API.
-  EXPECT_TRUE(sandbox_client->IsSuidSandboxUpToDate());
-  EXPECT_TRUE(sandbox_client->IsSuidSandboxChild());
-  EXPECT_TRUE(sandbox_client->IsInNewPIDNamespace());
-  EXPECT_FALSE(sandbox_client->IsInNewNETNamespace());
-
-  // Forge an incorrect API version and check.
-  EXPECT_TRUE(env->SetVar(kSandboxEnvironmentApiProvides,
-              base::IntToString(kSUIDSandboxApiNumber + 1)));
-  EXPECT_FALSE(sandbox_client->IsSuidSandboxUpToDate());
-  // We didn't go through the actual sandboxing mechanism as it is
-  // very hard in a unit test.
-  EXPECT_FALSE(sandbox_client->IsSandboxed());
-}
-
 // This test doesn't accomplish much, but will make sure that analysis tools
 // will run this codepath.
-TEST(SetuidSandboxClient, GetSandboxBinaryPath) {
-  scoped_ptr<SetuidSandboxClient> setuid_sandbox_client(
-      SetuidSandboxClient::Create());
-  ignore_result(setuid_sandbox_client->GetSandboxBinaryPath());
+TEST(SetuidSandboxHost, GetSandboxBinaryPath) {
+  scoped_ptr<SetuidSandboxHost> setuid_sandbox_host(
+      SetuidSandboxHost::Create());
+  ignore_result(setuid_sandbox_host->GetSandboxBinaryPath());
 }
 
 }  // namespace sandbox
-