Index: chrome/common/safe_browsing/file_type_policies.cc |
diff --git a/chrome/common/safe_browsing/file_type_policies.cc b/chrome/common/safe_browsing/file_type_policies.cc |
index 09fa1fb15702a0cdacfddf3078c0c4c8da349ee3..01db9dab3876cab8e7002a03078d4df2e5a98000 100644 |
--- a/chrome/common/safe_browsing/file_type_policies.cc |
+++ b/chrome/common/safe_browsing/file_type_policies.cc |
@@ -2,17 +2,39 @@ |
// Use of this source code is governed by a BSD-style license that can be |
// found in the LICENSE file. |
+#include "chrome/common/safe_browsing/file_type_policies.h" |
+ |
#include "base/logging.h" |
+#include "base/memory/singleton.h" |
#include "base/metrics/sparse_histogram.h" |
#include "base/strings/string_util.h" |
-#include "chrome/common/safe_browsing/download_protection_util.h" |
-#include "chrome/common/safe_browsing/file_type_policies.h" |
#include "chrome/grit/browser_resources.h" |
#include "chrome/grit/generated_resources.h" |
#include "ui/base/resource/resource_bundle.h" |
namespace safe_browsing { |
+using base::AutoLock; |
+ |
+// Our Singleton needs to populate itself when first constructed. |
+// This is left out of the constructor to make testing simpler. |
+struct FileTypePoliciesSingletonTrait |
+ : public base::DefaultSingletonTraits<FileTypePolicies> { |
+ static FileTypePolicies* New() { |
+ FileTypePolicies* instance = new FileTypePolicies(); |
+ instance->PopulateFromResourceBundle(); |
+ return instance; |
+ } |
+}; |
+ |
+// --- FileTypePolicies methods --- |
+ |
+// static |
+FileTypePolicies* FileTypePolicies::GetInstance() { |
+ return base::Singleton<FileTypePolicies, |
+ FileTypePoliciesSingletonTrait>::get(); |
+} |
+ |
FileTypePolicies::FileTypePolicies() { |
// Setup a file-type policy to use if the ResourceBundle is unreadable. |
// This should normally never be used. |
@@ -23,7 +45,9 @@ FileTypePolicies::FileTypePolicies() { |
settings->set_auto_open_hint(DownloadFileType::DISALLOW_AUTO_OPEN); |
} |
-FileTypePolicies::~FileTypePolicies() {} |
+FileTypePolicies::~FileTypePolicies() { |
+ AutoLock lock(lock_); // DCHECK fail if the lock is held. |
+} |
void FileTypePolicies::ReadResourceBundle(std::string* binary_pb) { |
ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance(); |
@@ -32,6 +56,7 @@ void FileTypePolicies::ReadResourceBundle(std::string* binary_pb) { |
void FileTypePolicies::RecordUpdateMetrics(UpdateResult result, |
const std::string& src_name) { |
+ lock_.AssertAcquired(); |
// src_name should be "ResourceBundle" or "DynamicUpdate". |
UMA_HISTOGRAM_SPARSE_SLOWLY( |
"SafeBrowsing.FileTypeUpdate." + src_name + "Result", |
@@ -48,6 +73,7 @@ void FileTypePolicies::RecordUpdateMetrics(UpdateResult result, |
} |
void FileTypePolicies::PopulateFromResourceBundle() { |
+ AutoLock lock(lock_); |
std::string binary_pb; |
ReadResourceBundle(&binary_pb); |
UpdateResult result = PopulateFromBinaryPb(binary_pb); |
@@ -55,12 +81,15 @@ void FileTypePolicies::PopulateFromResourceBundle() { |
} |
void FileTypePolicies::PopulateFromDynamicUpdate(const std::string& binary_pb) { |
+ AutoLock lock(lock_); |
UpdateResult result = PopulateFromBinaryPb(binary_pb); |
RecordUpdateMetrics(result, "DynamicUpdate"); |
} |
FileTypePolicies::UpdateResult FileTypePolicies::PopulateFromBinaryPb( |
const std::string& binary_pb) { |
+ lock_.AssertAcquired(); |
+ |
// Parse the proto and do some validation on it. |
if (binary_pb.empty()) |
return UpdateResult::FAILED_EMPTY; |
@@ -106,15 +135,25 @@ FileTypePolicies::UpdateResult FileTypePolicies::PopulateFromBinaryPb( |
} |
float FileTypePolicies::SampledPingProbability() const { |
+ AutoLock lock(lock_); |
return config_ ? config_->sampled_ping_probability() : 0.0; |
} |
// static |
+base::FilePath::StringType FileTypePolicies::GetFileExtension( |
+ const base::FilePath& file) { |
+ // Remove trailing space and period characters from the extension. |
+ base::FilePath::StringType file_basename = file.BaseName().value(); |
+ base::FilePath::StringPieceType trimmed_filename = base::TrimString( |
+ file_basename, FILE_PATH_LITERAL(". "), base::TRIM_TRAILING); |
+ return base::FilePath(trimmed_filename).FinalExtension(); |
+} |
+ |
+// static |
std::string FileTypePolicies::CanonicalizedExtension( |
const base::FilePath& file) { |
// The policy list is all ASCII, so a non-ASCII extension won't be in it. |
- const base::FilePath::StringType ext = |
- download_protection_util::GetFileExtension(file); |
+ const base::FilePath::StringType ext = GetFileExtension(file); |
std::string ascii_ext = |
base::ToLowerASCII(base::FilePath(ext).MaybeAsASCII()); |
if (ascii_ext[0] == '.') |
@@ -122,15 +161,14 @@ std::string FileTypePolicies::CanonicalizedExtension( |
return ascii_ext; |
} |
-const DownloadFileType& FileTypePolicies::PolicyForFile( |
- const base::FilePath& file) { |
+const DownloadFileType& FileTypePolicies::PolicyForExtension( |
+ const std::string& ascii_ext) const { |
+ lock_.AssertAcquired(); |
// This could happen if the ResourceBundle is corrupted. |
if (!config_) { |
DCHECK(false); |
return last_resort_default_; |
} |
- |
- std::string ascii_ext = CanonicalizedExtension(file); |
auto itr = file_type_by_ext_.find(ascii_ext); |
if (itr != file_type_by_ext_.end()) |
return *itr->second; |
@@ -138,18 +176,37 @@ const DownloadFileType& FileTypePolicies::PolicyForFile( |
return config_->default_file_type(); |
} |
-const DownloadFileType::PlatformSettings& FileTypePolicies::SettingsForFile( |
- const base::FilePath& file) { |
- DCHECK_EQ(1, PolicyForFile(file).platform_settings().size()); |
- return PolicyForFile(file).platform_settings(0); |
+DownloadFileType FileTypePolicies::PolicyForFile( |
+ const base::FilePath& file) const { |
+ const std::string ext = CanonicalizedExtension(file); |
+ AutoLock lock(lock_); |
+ return PolicyForExtension(ext); |
+} |
+ |
+DownloadFileType::PlatformSettings FileTypePolicies::SettingsForFile( |
+ const base::FilePath& file) const { |
+ const std::string ext = CanonicalizedExtension(file); |
+ AutoLock lock(lock_); |
+ DCHECK_EQ(1, PolicyForExtension(ext).platform_settings().size()); |
+ return PolicyForExtension(ext).platform_settings(0); |
+} |
+ |
+int64_t FileTypePolicies::UmaValueForFile(const base::FilePath& file) const { |
+ const std::string ext = CanonicalizedExtension(file); |
+ AutoLock lock(lock_); |
+ return PolicyForExtension(ext).uma_value(); |
} |
-int64_t FileTypePolicies::UmaValueForFile(const base::FilePath& file) { |
- return PolicyForFile(file).uma_value(); |
+bool FileTypePolicies::IsArchiveFile(const base::FilePath& file) const { |
+ const std::string ext = CanonicalizedExtension(file); |
+ AutoLock lock(lock_); |
+ return PolicyForExtension(ext).is_archive(); |
} |
-bool FileTypePolicies::IsFileAnArchive(const base::FilePath& file) { |
- return PolicyForFile(file).is_archive(); |
+bool FileTypePolicies::IsCheckedBinaryFile(const base::FilePath& file) const { |
+ const std::string ext = CanonicalizedExtension(file); |
+ AutoLock lock(lock_); |
+ return PolicyForExtension(ext).ping_setting() == DownloadFileType::FULL_PING; |
} |
} // namespace safe_browsing |