1 files changed, 83 insertions, 0 deletions
diff --git a/chromium/chrome/renderer/safe_browsing/features.cc b/chromium/chrome/renderer/safe_browsing/features.cc
new file mode 100644
index 00000000000..a40462cf960
--- /dev/null
+++ b/chromium/chrome/renderer/safe_browsing/features.cc
@@ -0,0 +1,83 @@
+// Copyright (c) 2010 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 "chrome/renderer/safe_browsing/features.h"
+
+#include "base/metrics/histogram_macros.h"
+
+namespace safe_browsing {
+
+const size_t FeatureMap::kMaxFeatureMapSize = 10000;
+
+FeatureMap::FeatureMap() {}
+FeatureMap::~FeatureMap() {}
+
+bool FeatureMap::AddBooleanFeature(const std::string& name) {
+  return AddRealFeature(name, 1.0);
+}
+
+bool FeatureMap::AddRealFeature(const std::string& name, double value) {
+  if (features_.size() >= kMaxFeatureMapSize) {
+    // If we hit this case, it indicates that either kMaxFeatureMapSize is
+    // too small, or there is a bug causing too many features to be added.
+    // In this case, we'll log to a histogram so we can see that this is
+    // happening, and make phishing classification fail silently.
+    UMA_HISTOGRAM_COUNTS_1M("SBClientPhishing.TooManyFeatures", 1);
+    return false;
+  }
+  // We only expect features in the range [0.0, 1.0], so fail if the feature is
+  // outside this range.
+  if (value < 0.0 || value > 1.0) {
+    UMA_HISTOGRAM_COUNTS_1M("SBClientPhishing.IllegalFeatureValue", 1);
+    return false;
+  }
+
+  features_[name] = value;
+  return true;
+}
+
+void FeatureMap::Clear() {
+  features_.clear();
+}
+
+namespace features {
+// URL host features
+const char kUrlHostIsIpAddress[] = "UrlHostIsIpAddress";
+const char kUrlTldToken[] = "UrlTld=";
+const char kUrlDomainToken[] = "UrlDomain=";
+const char kUrlOtherHostToken[] = "UrlOtherHostToken=";
+
+// URL host aggregate features
+const char kUrlNumOtherHostTokensGTOne[] = "UrlNumOtherHostTokens>1";
+const char kUrlNumOtherHostTokensGTThree[] = "UrlNumOtherHostTokens>3";
+
+// URL path features
+const char kUrlPathToken[] = "UrlPathToken=";
+
+// DOM HTML form features
+const char kPageHasForms[] = "PageHasForms";
+const char kPageActionOtherDomainFreq[] = "PageActionOtherDomainFreq";
+const char kPageActionURL[] = "PageActionURL=";
+const char kPageHasTextInputs[] = "PageHasTextInputs";
+const char kPageHasPswdInputs[] = "PageHasPswdInputs";
+const char kPageHasRadioInputs[] = "PageHasRadioInputs";
+const char kPageHasCheckInputs[] = "PageHasCheckInputs";
+
+// DOM HTML link features
+const char kPageExternalLinksFreq[] = "PageExternalLinksFreq";
+const char kPageLinkDomain[] = "PageLinkDomain=";
+const char kPageSecureLinksFreq[] = "PageSecureLinksFreq";
+
+// DOM HTML script features
+const char kPageNumScriptTagsGTOne[] = "PageNumScriptTags>1";
+const char kPageNumScriptTagsGTSix[] = "PageNumScriptTags>6";
+
+// Other DOM HTML features
+const char kPageImgOtherDomainFreq[] = "PageImgOtherDomainFreq";
+
+// Page term features
+const char kPageTerm[] = "PageTerm=";
+
+}  // namespace features
+}  // namespace safe_browsing