NaCl: enable meta-based validation for shared libraries.

chrome/nacl/nacl_validation_query.cc

Index: chrome/nacl/nacl_validation_query.cc
diff --git a/chrome/nacl/nacl_validation_query.cc b/chrome/nacl/nacl_validation_query.cc
index 37d9b7866e51fa0c356e4a4871b1a7f95f926b2e..c62c3653aa846f5a0dc95827ad46a1c1fc91d91c 100644
--- a/chrome/nacl/nacl_validation_query.cc
+++ b/chrome/nacl/nacl_validation_query.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "crypto/nss_util.h"
 #include "chrome/nacl/nacl_validation_db.h"
+#include "native_client/src/trusted/validator/nacl_file_info.h"
 #include "native_client/src/trusted/validator/validation_cache.h"
 
 NaClValidationQueryContext::NaClValidationQueryContext(
@@ -29,6 +30,13 @@ NaClValidationQuery* NaClValidationQueryContext::CreateQuery() {
   return query;
 }
 
+bool NaClValidationQueryContext::ResolveFileToken(
+    struct NaClFileToken *file_token,
+    int32* fd,
+    std::string* path) {
+  return db_->ResolveFileToken(file_token, fd, path);
+}
+
 NaClValidationQuery::NaClValidationQuery(NaClValidationDB* db,
                                          const std::string& profile_key)
     : state_(READY),
@@ -127,6 +135,24 @@ static void DestroyQuery(void* query) {
   delete static_cast<NaClValidationQuery*>(query);
 }
 
+static int ResolveFileToken(void* handle, struct NaClFileToken* file_token,
+                            int32* fd, char** file_path,
+                            uint32 *file_path_length) {
+  std::string path;
+  *file_path = NULL;
+  *file_path_length = 0;
+  bool ok = static_cast<NaClValidationQueryContext*>(handle)->
+      ResolveFileToken(file_token, fd, &path);
+  if (ok) {
+    *file_path = static_cast<char *>(malloc(path.length() + 1));
+    CHECK(*file_path);
+    memcpy(*file_path, path.data(), path.length());
+    (*file_path)[path.length()] = 0;
+    *file_path_length = static_cast<uint32>(path.length());
+  }
+  return ok;
+}
+
 struct NaClValidationCache* CreateValidationCache(
     NaClValidationDB* db, const std::string& profile_key,
     const std::string& nacl_version) {
@@ -140,5 +166,6 @@ struct NaClValidationCache* CreateValidationCache(
   cache->QueryKnownToValidate = QueryKnownToValidate;
   cache->SetKnownToValidate = SetKnownToValidate;
   cache->DestroyQuery = DestroyQuery;
+  cache->ResolveFileToken = ResolveFileToken;
   return cache;
 }