Certificate Transparency: Code for unpacking EV cert hashes whitelist

net/socket/ssl_client_socket_nss.cc

Index: net/socket/ssl_client_socket_nss.cc
diff --git a/net/socket/ssl_client_socket_nss.cc b/net/socket/ssl_client_socket_nss.cc
index 8ec932ae64779eac226def47dda25246f65a2c6f..6d1cd69b34810e0851583db58f4d7cdcad19f924 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -94,7 +94,7 @@
 #include "net/cert/asn1_util.h"
 #include "net/cert/cert_status_flags.h"
 #include "net/cert/cert_verifier.h"
-#include "net/cert/ct_objects_extractor.h"
+#include "net/cert/ct_ev_whitelist.h"
 #include "net/cert/ct_verifier.h"
 #include "net/cert/ct_verify_result.h"
 #include "net/cert/scoped_nss_types.h"
@@ -3463,6 +3463,21 @@ int SSLClientSocketNSS::DoVerifyCertComplete(int result) {
     result = ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN;
   }
 
+  scoped_refptr<ct::EVCertsWhitelist> ev_whitelist =
+      SSLConfigService::GetEVCertsWhitelist();
+  if (server_cert_verify_result_.cert_status & CERT_STATUS_IS_EV) {
+    if (ev_whitelist.get() && ev_whitelist->IsValid()) {
+      const SHA256HashValue fingerprint(
+          X509Certificate::CalculateFingerprint256(
+              server_cert_verify_result_.verified_cert->os_cert_handle()));
+
+      UMA_HISTOGRAM_BOOLEAN(
+          "Net.SSL_EVCertificateInWhitelist",
+          ev_whitelist->ContainsCertificateHash(
+              std::string(reinterpret_cast<const char*>(fingerprint.data), 8)));
+    }
+  }
+
   if (result == OK) {
     // Only check Certificate Transparency if there were no other errors with
     // the connection.