Reland - Create a database for NaCl validation caching that is shared between processes.

Originally reverted in 129077 due to perf regression. Followup commit will fix up expectations.
http://chromegw.corp.google.com/i/chromium/builders/Linux%20x64/builds/25780

This change primarily entails creating a SyncChannel between sel_ldr and the
browser.  Queries to the database could be made from any thread inside sel_ldr,
so the query mechanism needs to be thread safe.

This feature is currently disabled by default, and requires an environment
variable to enable.  A few changes need to be made before this features is safe
and can be enabled, such as making sure each installation has a unique,
crypographically secure key.

BUG= http://code.google.com/p/nativeclient/issues/detail?id=2515
TEST= Run NaCl w/ NACL_VALIDATION_CACHE=1


Review URL: http://codereview.chromium.org/9796006

TBR=ncbray@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9808113

TBR=nduca@google.com
Review URL: https://chromiumcodereview.appspot.com/9860020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@129082 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 70 insertions, 21 deletions

diff --git a/crypto/crypto.gyp b/crypto/crypto.gyp
index 405ad0b..f095719 100644
--- a/crypto/crypto.gyp
+++ b/crypto/crypto.gyp
@@ -5,6 +5,19 @@
 {
   'variables': {
     'chromium_code': 1,
+    # Put all transitive dependencies for Windows HMAC here.
+    # This is required so that we can build them for nacl win64.
+    'hmac_win64_related_sources': [
+      'hmac.cc',
+      'hmac.h',
+      'hmac_win.cc',
+      'secure_util.cc',
+      'secure_util.h',
+      'symmetric_key.h',
+      'symmetric_key_win.cc',
+      'third_party/nss/chromium-sha256.h',
+      'third_party/nss/sha512.cc',
+    ],
   },
   'targets': [
     {
@@ -131,6 +144,9 @@
         },],
       ],
       'sources': [
+        # NOTE: all transitive dependencies of HMAC on windows need
+        #     to be placed in the source list above.
+        '<@(hmac_win64_related_sources)',
         'capi_util.cc',
         'capi_util.h',
         'crypto_export.h',
@@ -151,12 +167,9 @@
         'encryptor_nss.cc',
         'encryptor_openssl.cc',
         'encryptor_win.cc',
-        'hmac.cc',
-        'hmac.h',
         'hmac_mac.cc',
         'hmac_nss.cc',
         'hmac_openssl.cc',
-        'hmac_win.cc',
         'keychain_mac.cc',
         'keychain_mac.h',
         'mac_security_services_lock.cc',
@@ -185,8 +198,6 @@
         'secure_hash.h',
         'secure_hash_default.cc',
         'secure_hash_openssl.cc',
-        'secure_util.cc',
-        'secure_util.h',
         'sha2.cc',
         'sha2.h',
         'signature_creator.h',
@@ -197,18 +208,14 @@
         'signature_verifier.h',
         'signature_verifier_nss.cc',
         'signature_verifier_openssl.cc',
-        'symmetric_key.h',
         'symmetric_key_mac.cc',
         'symmetric_key_nss.cc',
         'symmetric_key_openssl.cc',
-        'symmetric_key_win.cc',
         'third_party/nss/chromium-blapi.h',
         'third_party/nss/chromium-blapit.h',
         'third_party/nss/chromium-nss.h',
-        'third_party/nss/chromium-sha256.h',
         'third_party/nss/pk11akey.cc',
         'third_party/nss/secsign.cc',
-        'third_party/nss/sha512.cc',
       ],
     },
     {
@@ -281,4 +288,32 @@
       ],
     },
   ],
+  'conditions': [
+    [ 'OS == "win"', {
+      'targets': [
+        {
+          'target_name': 'crypto_nacl_win64',
+          'type': '<(component)',
+          'dependencies': [
+            '../base/base.gyp:base_nacl_win64',
+            '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations_win64',
+          ],
+          'sources': [
+            '<@(hmac_win64_related_sources)',
+          ],
+          'defines': [
+           'CRYPTO_IMPLEMENTATION',
+          ],
+          'msvs_disabled_warnings': [
+            4018,
+          ],
+          'configurations': {
+            'Common_Base': {
+              'msvs_target_platform': 'x64',
+            },
+          },
+        },
+      ],
+    }],
+  ],
 }
diff --git a/crypto/hmac_win.cc b/crypto/hmac_win.cc
index ffd08ce8..ef3e261 100644
--- a/crypto/hmac_win.cc
+++ b/crypto/hmac_win.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -28,6 +28,19 @@ enum {
   SHA256_BLOCK_SIZE = 64  // Block size (in bytes) of the input to SHA-256.
 };
 
+// NSS doesn't accept size_t for text size, divide the data into smaller
+// chunks as needed.
+void Wrapped_SHA256_Update(SHA256Context* ctx, const unsigned char* text,
+                           size_t text_len) {
+  const unsigned int kChunkSize = 1 << 30;
+  while (text_len > kChunkSize) {
+    SHA256_Update(ctx, text, kChunkSize);
+    text += kChunkSize;
+    text_len -= kChunkSize;
+  }
+  SHA256_Update(ctx, text, (unsigned int)text_len);
+}
+
 // See FIPS 198: The Keyed-Hash Message Authentication Code (HMAC).
 void ComputeHMACSHA256(const unsigned char* key, size_t key_len,
                        const unsigned char* text, size_t text_len,
@@ -38,7 +51,7 @@ void ComputeHMACSHA256(const unsigned char* key, size_t key_len,
   unsigned char key0[SHA256_BLOCK_SIZE];
   if (key_len > SHA256_BLOCK_SIZE) {
     SHA256_Begin(&ctx);
-    SHA256_Update(&ctx, key, key_len);
+    Wrapped_SHA256_Update(&ctx, key, key_len);
     SHA256_End(&ctx, key0, NULL, SHA256_LENGTH);
     memset(key0 + SHA256_LENGTH, 0, SHA256_BLOCK_SIZE - SHA256_LENGTH);
   } else {
@@ -57,7 +70,7 @@ void ComputeHMACSHA256(const unsigned char* key, size_t key_len,
   // Compute the inner hash.
   SHA256_Begin(&ctx);
   SHA256_Update(&ctx, padded_key, SHA256_BLOCK_SIZE);
-  SHA256_Update(&ctx, text, text_len);
+  Wrapped_SHA256_Update(&ctx, text, text_len);
   SHA256_End(&ctx, inner_hash, NULL, SHA256_LENGTH);
 
   // XOR key0 with opad.
@@ -68,7 +81,7 @@ void ComputeHMACSHA256(const unsigned char* key, size_t key_len,
   SHA256_Begin(&ctx);
   SHA256_Update(&ctx, padded_key, SHA256_BLOCK_SIZE);
   SHA256_Update(&ctx, inner_hash, SHA256_LENGTH);
-  SHA256_End(&ctx, output, NULL, output_len);
+  SHA256_End(&ctx, output, NULL, (unsigned int) output_len);
 }
 
 }  // namespace
@@ -138,8 +151,8 @@ bool HMAC::Init(const unsigned char* key, int key_length) {
   memcpy(key_blob->key_data, key, key_length);
 
   if (!CryptImportKey(plat_->provider_, &key_blob_storage[0],
-                      key_blob_storage.size(), 0, CRYPT_IPSEC_HMAC_KEY,
-                      plat_->key_.receive())) {
+                      (DWORD)key_blob_storage.size(), 0,
+                      CRYPT_IPSEC_HMAC_KEY, plat_->key_.receive())) {
     NOTREACHED();
     return false;
   }
diff --git a/crypto/symmetric_key_win.cc b/crypto/symmetric_key_win.cc
index d2034e0..87e0bc3 100644
--- a/crypto/symmetric_key_win.cc
+++ b/crypto/symmetric_key_win.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -50,11 +50,12 @@ ALG_ID GetAESAlgIDForKeySize(size_t key_size_in_bits) {
 // TODO(wtc): use this function in hmac_win.cc.
 bool ImportRawKey(HCRYPTPROV provider,
                   ALG_ID alg,
-                  const void* key_data, DWORD key_size,
+                  const void* key_data, size_t key_size,
                   ScopedHCRYPTKEY* key) {
   DCHECK_GT(key_size, 0);
 
-  DWORD actual_size = sizeof(PlaintextBlobHeader) + key_size;
+  DWORD actual_size =
+      static_cast<DWORD>(sizeof(PlaintextBlobHeader) + key_size);
   std::vector<BYTE> tmp_data(actual_size);
   BYTE* actual_key = &tmp_data[0];
   memcpy(actual_key + sizeof(PlaintextBlobHeader), key_data, key_size);
@@ -66,7 +67,7 @@ bool ImportRawKey(HCRYPTPROV provider,
   key_header->hdr.bVersion = CUR_BLOB_VERSION;
   key_header->hdr.aiKeyAlg = alg;
 
-  key_header->cbKeySize = key_size;
+  key_header->cbKeySize = static_cast<DWORD>(key_size);
 
   HCRYPTKEY unsafe_key = NULL;
   DWORD flags = CRYPT_EXPORTABLE;
@@ -184,7 +185,7 @@ bool GenerateHMACKey(size_t key_size_in_bits,
   if (!ok)
     return false;
 
-  DWORD key_size_in_bytes = key_size_in_bits / 8;
+  DWORD key_size_in_bytes = static_cast<DWORD>(key_size_in_bits / 8);
   scoped_array<BYTE> random(new BYTE[key_size_in_bytes]);
   ok = CryptGenRandom(safe_provider, key_size_in_bytes, random.get());
   if (!ok)
@@ -258,7 +259,7 @@ bool ComputePBKDF2Block(HCRYPTHASH hash,
 
   // Iteration U_1: Compute PRF for S.
   ok = CryptHashData(safe_hash, reinterpret_cast<const BYTE*>(salt.data()),
-                     salt.size(), 0);
+                     static_cast<DWORD>(salt.size()), 0);
   if (!ok)
     return false;