Extract external file systems handling from isolated context.

webkit/chromeos/fileapi/cros_mount_point_provider_unittest.cc

+// Copyright (c) 2012 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 "base/file_path.h"
+#include "googleurl/src/url_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/chromeos/fileapi/cros_mount_point_provider.h"
+#include "webkit/fileapi/external_mount_points.h"
+#include "webkit/fileapi/file_system_url.h"
+#include "webkit/fileapi/isolated_context.h"
+#include "webkit/quota/mock_special_storage_policy.h"
+
+#define FPL(x) FILE_PATH_LITERAL(x)
+
+#if defined(FILE_PATH_USES_DRIVE_LETTERS)
+#define DRIVE FPL("C:")
+#else
+#define DRIVE
+#endif
+
+namespace {
+
+FilePath GetFilePath(const std::string& path_str) {
+  return FilePath(DRIVE FPL(path_str));
+}
+
+fileapi::FileSystemURL CreateFileSystemURL(const std::string& extension,
+                                           const std::string& path) {
+  return fileapi::FileSystemURL(GURL("chrome-extension://" + extension + "/"),
+                                fileapi::kFileSystemTypeNativeLocal,
+                                GetFilePath(path));
+}
+
+bool VectorHasPath(const std::vector<FilePath>& path_vector,
+                   const FilePath& path) {
+  for (size_t i = 0; i < path_vector.size(); ++i) {
+    if (path_vector[i] == path) {
+      return true;
+    }
+  }
+  return false;
+}
+
+TEST(CrosMountPointProviderTest, DefaultMountPoints) {
+  scoped_refptr<quota::SpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  chromeos::CrosMountPointProvider provider(
+      storage_policy,
+      mount_points.get(),
+      fileapi::ExternalMountPoints::GetSystemInstance());
+  // By default there should be 4 mount points.
+  std::vector<FilePath> root_dirs = provider.GetRootDirectories(true);
+  EXPECT_EQ(4u, root_dirs.size());
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/media/removable")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/media/archive")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/usr/share/oem")));
+  // Fourth mount point is Downloads, but it's local path is device specific.
+}
+
+TEST(CrosMountPointProviderTest, GetRootDirectories) {
+  scoped_refptr<quota::SpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+
+  scoped_refptr<fileapi::ExternalMountPoints> system_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+
+  chromeos::CrosMountPointProvider provider(
+      storage_policy,
+      mount_points.get(),
+      system_mount_points.get());
+
+  // Register 'local' test mount points.
+  mount_points->RegisterFileSystem("c",
+                                   fileapi::kFileSystemTypeNativeLocal,
+                                   GetFilePath("/a/b/c"));
+  mount_points->RegisterFileSystem("d",
+                                   fileapi::kFileSystemTypeNativeLocal,
+                                   GetFilePath("/b/c/d"));
+
+  // Register system test mount points.
+  system_mount_points->RegisterFileSystem("d",
+                                          fileapi::kFileSystemTypeNativeLocal,
+                                          GetFilePath("/g/c/d"));
+  system_mount_points->RegisterFileSystem("e",
+                                          fileapi::kFileSystemTypeNativeLocal,
+                                          GetFilePath("/g/d/e"));
+
+  std::vector<FilePath> root_dirs =
+      provider.GetRootDirectories(true /* include system points */);
+  EXPECT_EQ(4u, root_dirs.size());
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/a/b/c")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/b/c/d")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/g/c/d")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/g/d/e")));
+
+  root_dirs = provider.GetRootDirectories(false /* include system points */);
+  EXPECT_EQ(2u, root_dirs.size());
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/a/b/c")));
+  EXPECT_TRUE(VectorHasPath(root_dirs, GetFilePath("/b/c/d")));
+}
+
+TEST(CrosMountPointProviderTest, MountPointsVisibility) {
+  scoped_refptr<quota::SpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  scoped_refptr<fileapi::ExternalMountPoints> sibling_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+
+  scoped_refptr<fileapi::ExternalMountPoints> system_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+
+  chromeos::CrosMountPointProvider provider(
+      storage_policy,
+      mount_points.get(),
+      system_mount_points.get());
+
+  // A provider that shares system_mount_points with |provider|.
+  chromeos::CrosMountPointProvider sibling_provider(
+      storage_policy,
+      sibling_mount_points.get(),
+      system_mount_points.get());
+
+  FilePath ignored;
+
+  // Add mount point to the provider.
+  EXPECT_TRUE(provider.AddLocalMountPoint(GetFilePath("/a/b/c")));
+
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/a/b/c")));
+  EXPECT_FALSE(sibling_provider.HasMountPoint(GetFilePath("/a/b/c")));
+  EXPECT_TRUE(mount_points->GetRegisteredPath("c", &ignored));
+  EXPECT_FALSE(system_mount_points->GetRegisteredPath("c", &ignored));
+
+  // Add mount point directly to |mount_points|. It should be seen by
+  // |provider|.
+  EXPECT_TRUE(mount_points->RegisterFileSystem(
+      "d", fileapi::kFileSystemTypeNativeLocal, GetFilePath("/b/c/d")));
+
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/b/c/d")));
+  EXPECT_FALSE(sibling_provider.HasMountPoint(GetFilePath("/b/c/d")));
+
+  // Add mount point to system mount points.
+  EXPECT_TRUE(system_mount_points->RegisterFileSystem(
+      "e", fileapi::kFileSystemTypeNativeLocal, GetFilePath("/g/c/d/e")));
+
+  EXPECT_FALSE(provider.HasMountPoint(GetFilePath("/g/c/d/e")));
+  EXPECT_FALSE(sibling_provider.HasMountPoint(GetFilePath("/g/c/d/e")));
+
+  // Can't remove system nount point.
+  provider.RemoveMountPoint(GetFilePath("/g/c/d/e"));
+  EXPECT_TRUE(system_mount_points->GetRegisteredPath("e", &ignored));
+
+  // Add a mount points whose paths overlap with the system one's.
+  // The same path
+  EXPECT_TRUE(provider.AddLocalMountPoint(GetFilePath("/g/c/d/e")));
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/g/c/d/e")));
+  provider.RemoveMountPoint(GetFilePath("/g/c/d/e"));
+  // Parent path.
+  EXPECT_TRUE(provider.AddLocalMountPoint(GetFilePath("/g")));
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/g")));
+  provider.RemoveMountPoint(GetFilePath("/g"));
+  // Child path.
+  EXPECT_TRUE(provider.AddLocalMountPoint(GetFilePath("/g/c/d/e/f/g")));
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/g/c/d/e/f/g")));
+  provider.RemoveMountPoint(GetFilePath("/g/c/d/e/f/g"));
+
+  // Add mount point with the same name as a global one. Should succeed.
+  EXPECT_TRUE(provider.AddLocalMountPoint(GetFilePath("/d/e")));
+
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/d/e")));
+
+  // Remove system mount point with the same name as the added one.
+  // Should fail.
+  provider.RemoveMountPoint(GetFilePath("/g/c/d/e"));
+
+  EXPECT_TRUE(provider.HasMountPoint(GetFilePath("/d/e")));
+  EXPECT_TRUE(system_mount_points->GetRegisteredPath("e", &ignored));
+
+  // Remove mount point.
+  provider.RemoveMountPoint(GetFilePath("/d/e"));
+
+  EXPECT_FALSE(provider.HasMountPoint(GetFilePath("/d/e")));
+}
+
+TEST(CrosMountPointProviderTest, AddMountPoint) {
+  scoped_refptr<quota::SpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  scoped_refptr<fileapi::ExternalMountPoints> ignored_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  chromeos::CrosMountPointProvider provider(storage_policy,
+      mount_points.get(),
+      ignored_mount_points);
+
+  struct TestCase {
+    const char* const mount_point;
+    bool success;
+    bool should_exist_after_adding;
+  };
+
+  const TestCase kTestCases[] = {
+    // Valid mount point.
+    { "/foo/test", true, true },
+    // Valid mount point with only one path component.
+    { "/bbb/", true, true },
+    // Existing mount point path is substring of the mount points path.
+    { "/foo/test11", true, true },
+    // Path substring of an existing path.
+    { "/foo/test1", true, true },
+    // Empty mount point path.
+    { "", false, false },
+    // Empty mount point name.
+    { "/", false, false },
+    // References parent.
+    { "../foo/invalid", false, false },
+    // Relative path.
+    { "foo/relative", false, false },
+    // Existing mount point.
+    { "/foo/test", false, true },
+    // Existing mount point with trailing /.
+    { "/foo/test/", false, false },
+    // Mount point with the same name exists.
+    { "/foo/a/test", false, false },
+    // Child of an existing mount point.
+    { "/foo/test/a", false, false },
+    // Parent of an existing mount point.
+    { "/foo", false, false },
+    // Bit bigger depth.
+    { "/foo/a/b/c/d/e/f/g", true, true },
+    // Sibling mount point (with similar name) exists.
+    { "/foo/a/b/c/d/e/ff", true, true },
+    // Lexicographically last among existing mount points.
+    { "/zzz/yyy", true, true },
+    // Parent of the lexicographically last mount point.
+    { "/zzz/", false, false },
+    // Child of the lexicographically last mount point.
+    { "/zzz/yyy/xxx", false, false },
+    // Lexicographically first among existing mount points.
+    { "/a/b", true, true },
+    // Parent of lexicographically first mount point.
+    { "/a", false, false },
+    // Child of lexicographically last mount point.
+    { "/a/b/c", false, false },
+  };
+
+  // Test adding mount points.
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestCases); ++i) {
+    FilePath mount_point = GetFilePath(kTestCases[i].mount_point);
+    EXPECT_EQ(kTestCases[i].success,
+              provider.AddLocalMountPoint(mount_point))
+        << "Adding mount point: " << kTestCases[i].mount_point;
+  }
+
+  // Test that final mount point presence state is as expected.
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestCases); ++i) {
+    FilePath mount_point = GetFilePath(kTestCases[i].mount_point);
+    EXPECT_EQ(kTestCases[i].should_exist_after_adding,
+              provider.HasMountPoint(mount_point))
+        << "Has mount point: " << kTestCases[i].mount_point;
+  }
+}
+
+TEST(CrosMountPointProviderTest, AccessPermissions) {
+  url_util::AddStandardScheme("chrome-extension");
+
+  scoped_refptr<quota::MockSpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  scoped_refptr<fileapi::ExternalMountPoints> system_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  chromeos::CrosMountPointProvider provider(
+      storage_policy,
+      mount_points.get(),
+      system_mount_points.get());
+
+  std::string extension("ddammdhioacbehjngdmkjcjbnfginlla");
+
+  storage_policy->AddFileHandler(extension);
+
+  // Initialize mount points.
+  system_mount_points->RegisterFileSystem("system",
+                                          fileapi::kFileSystemTypeNativeLocal,
+                                          GetFilePath("/g/system"));
+  ASSERT_TRUE(provider.AddLocalMountPoint(GetFilePath("/media/removable")));
+  ASSERT_TRUE(provider.AddRestrictedLocalMountPoint(
+      GetFilePath("/usr/share/oem")));
+
+  // Provider specific mount point access.
+  EXPECT_FALSE(provider.IsAccessAllowed(CreateFileSystemURL(extension,
+                                                            "removable/foo")));
+
+  provider.GrantFileAccessToExtension(extension, GetFilePath("removable/foo"));
+  EXPECT_TRUE(provider.IsAccessAllowed(CreateFileSystemURL(extension,
+                                                           "removable/foo")));
+  EXPECT_FALSE(provider.IsAccessAllowed(CreateFileSystemURL(extension,
+                                                            "removable/foo1")));
+
+  // System mount point access.
+  EXPECT_FALSE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "system/foo")));
+
+  provider.GrantFileAccessToExtension(extension, GetFilePath("system/foo"));
+  EXPECT_TRUE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "system/foo")));
+  EXPECT_FALSE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "system/foo1")));
+
+  // oem is restricted file system.
+  provider.GrantFileAccessToExtension(extension, GetFilePath("oem/foo"));
+  // The extension should not be able to access the file even if
+  // GrantFileAccessToExtension was called.
+  EXPECT_FALSE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "oem/foo")));
+
+  provider.GrantFullAccessToExtension(extension);
+  // The extension should be able to access restricted file system after it was
+  // granted full access.
+  EXPECT_TRUE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "oem/foo")));
+  // The extension which was granted fulle access  should be able to access any
+  // path on curent file systems.
+  EXPECT_TRUE(provider.IsAccessAllowed(
+      CreateFileSystemURL(extension, "removable/foo1")));
+  EXPECT_TRUE(provider.IsAccessAllowed(
+      CreateFileSystemURL(extension, "system/foo1")));
+
+  // The extension still cannot access new mount points.
+  ASSERT_TRUE(provider.AddLocalMountPoint(GetFilePath("/foo/test")));
+  EXPECT_FALSE(
+      provider.IsAccessAllowed(CreateFileSystemURL(extension, "test_/foo")));
+
+  provider.RevokeAccessForExtension(extension);
+  EXPECT_FALSE(provider.IsAccessAllowed(
+      CreateFileSystemURL(extension,"removable/foo")));
+
+  fileapi::FileSystemURL internal_url(GURL("chrome://foo"),
+                                     fileapi::kFileSystemTypeExternal,
+                                     GetFilePath("removable/"));
+  // Internal WebUI should have full access.
+  EXPECT_TRUE(provider.IsAccessAllowed(internal_url));
+}
+
+// TODO(tbarzic): This could be moved to external_mount_points tests.
+TEST(CrosMountPointProvider, GetVirtualPath) {
+  scoped_refptr<quota::MockSpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  scoped_refptr<fileapi::ExternalMountPoints> system_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  chromeos::CrosMountPointProvider provider(storage_policy,
+      system_mount_points.get(),
+      mount_points.get());
+
+  ASSERT_TRUE(provider.AddLocalMountPoint(GetFilePath("/a/b/c")));
+  ASSERT_TRUE(provider.AddLocalMountPoint(GetFilePath("/z/y/x")));
+  ASSERT_TRUE(provider.AddLocalMountPoint(GetFilePath("/m/n/o")));
+
+  // Register mount point whose name does not match its path base name.
+  ASSERT_TRUE(
+      mount_points->RegisterFileSystem("mount",
+                                       fileapi::kFileSystemTypeNativeLocal,
+                                       FilePath(DRIVE FPL("/root/foo"))));
+
+  struct TestCase {
+    const char* const local_path;
+    bool success;
+    const char* const virtual_path;
+  };
+
+  const TestCase kTestCases[] = {
+    // Empty path.
+    { "", false, "" },
+    // No registered mount point (but is parent to a mount point).
+    { "/a/b", false, ""},
+    // No registered mount point (but is parent to a mount point).
+    { "/z/y", false, ""},
+    // No registered mount point (but is parent to a mount point).
+    { "/m/n", false, ""},
+    // No registered mount point.
+    { "/foo/mount", false, ""},
+    // An existing mount point path is substring.
+    { "/a/b/c1", false, "" },
+    // No leading /.
+    { "a/b/c", false, "" },
+    // Sibling to a root path.
+    { "/a/b/d/e", false, ""},
+    // Sibling to a root path.
+    { "/z/y/v/u", false, ""},
+    // Sibling to a root path.
+    { "/m/n/p/q", false, ""},
+    // Mount point root path.
+    { "/a/b/c", true, "c"},
+    // Mount point root path.
+    { "/z/y/x", true, "x"},
+    // Mount point root path.
+    { "/m/n/o", true, "o"},
+    // Mount point child path.
+    { "/a/b/c/d/e", true, "c/d/e"},
+    // Mount point child path.
+    { "/z/y/x/v/u", true, "x/v/u"},
+    // Mount point child path.
+    { "/m/n/o/p/q", true, "o/p/q"},
+    // Name doesn't match mount point path base name.
+    { "/root/foo/a/b/c", true, "mount/a/b/c" },
+    { "/root/foo", true, "mount" },
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestCases); ++i) {
+    // Init virtual path with a value.
+    FilePath virtual_path(DRIVE FPL("/mount"));
+    FilePath local_path(DRIVE FPL(kTestCases[i].local_path));
+    EXPECT_EQ(kTestCases[i].success,
+              provider.GetVirtualPath(local_path, &virtual_path))
+        << "Resolving " << kTestCases[i].local_path;
+
+    // There are no guaranties for |virtual_path| value if |GetVirtualPath|
+    // fails.
+    if (!kTestCases[i].success)
+      continue;
+
+    FilePath expected_virtual_path(DRIVE FPL(kTestCases[i].virtual_path));
+    EXPECT_EQ(expected_virtual_path, virtual_path)
+        << "Resolving " << kTestCases[i].local_path;
+  }
+}
+
+TEST(CrosMountPointProvider, GetVirtualPathConflictWithSystemPoints) {
+  scoped_refptr<quota::MockSpecialStoragePolicy> storage_policy =
+      new quota::MockSpecialStoragePolicy();
+  scoped_refptr<fileapi::ExternalMountPoints> mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  scoped_refptr<fileapi::ExternalMountPoints> system_mount_points(
+      fileapi::ExternalMountPoints::CreateRefCounted());
+  chromeos::CrosMountPointProvider provider(storage_policy,
+      mount_points.get(),
+      system_mount_points.get());
+
+  const fileapi::FileSystemType type = fileapi::kFileSystemTypeNativeLocal;
+
+  // Provider specific mount points.
+  ASSERT_TRUE(
+      mount_points->RegisterFileSystem("b", type, GetFilePath("/a/b")));
+  ASSERT_TRUE(
+      mount_points->RegisterFileSystem("y", type, GetFilePath("/z/y")));
+  ASSERT_TRUE(
+      mount_points->RegisterFileSystem("n", type, GetFilePath("/m/n")));
+
+  // System mount points
+  ASSERT_TRUE(
+      system_mount_points->RegisterFileSystem("gb", type, GetFilePath("/a/b")));
+  ASSERT_TRUE(
+      system_mount_points->RegisterFileSystem("gz", type, GetFilePath("/z")));
+  ASSERT_TRUE(system_mount_points->RegisterFileSystem("gp", type,
+                                                      GetFilePath("/m/n/o/p")));
+  struct TestCase {
+    const char* const local_path;
+    bool success;
+    const char* const virtual_path;
+  };
+
+  const TestCase kTestCases[] = {
+    // Same paths in both mount points.
+    { "/a/b/c/d", true, "b/c/d" },
+    // System mount points path more specific.
+    { "/m/n/o/p/r/s", true, "n/o/p/r/s" },
+    // System mount points path less specific.
+    { "/z/y/x", true, "y/x"},
+    // Only system mount points path matches.
+    { "/z/q/r/s", true, "gz/q/r/s"},
+    // No match.
+    { "/foo/xxx", false, "" },
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestCases); ++i) {
+    // Init virtual path with a value.
+    FilePath virtual_path(DRIVE FPL("/mount"));
+    FilePath local_path(DRIVE FPL(kTestCases[i].local_path));
+    EXPECT_EQ(kTestCases[i].success,
+              provider.GetVirtualPath(local_path, &virtual_path))
+        << "Resolving " << kTestCases[i].local_path;
+
+    // There are no guaranties for |virtual_path| value if |GetVirtualPath|
+    // fails.
+    if (!kTestCases[i].success)
+      continue;
+
+    FilePath expected_virtual_path(DRIVE FPL(kTestCases[i].virtual_path));
+    EXPECT_EQ(expected_virtual_path, virtual_path)
+        << "Resolving " << kTestCases[i].local_path;
+  }
+}
+
+}  // namespace