Source release 17.1.0

cdm/test/level3_file_system_ce_test.cpp

@@ -1,3 +1,13 @@
+// Copyright 2022 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine License
+// Agreement.
+
+/**
+   The test file system for the Level 3 OEMCrypto sits on top of the host file
+   system. A real production version may either use the host file system or it
+   may write files directly to the file system.
+ */
+
 #include <algorithm>
 #include <cstring>
 #include <map>
@@ -5,14 +15,17 @@
 
 #include "level3_file_system_ce_test.h"
 
-namespace wvoec3 {
+#include "test_host.h"
 
-std::map<std::string, std::string> OEMCrypto_Level3CETestFileSystem::files_;
+namespace wvoec3 {
 
 ssize_t OEMCrypto_Level3CETestFileSystem::Read(const char* filename,
                                                void* buffer, size_t size) {
-  if (!Exists(filename)) return 0;
-  std::string data = files_[std::string(filename)];
+  if (!g_host) return 0;
+  const std::string name(filename);
+  if (!g_host->global_storage().exists(name)) return 0;
+  std::string data;
+  if (!g_host->global_storage().read(name, &data)) return 0;
   size_t bytes_read = std::min(size, data.size());
   memcpy(buffer, data.data(), bytes_read);
   return bytes_read;
@@ -21,24 +34,31 @@ ssize_t OEMCrypto_Level3CETestFileSystem::Read(const char* filename,
 ssize_t OEMCrypto_Level3CETestFileSystem::Write(const char* filename,
                                                 const void* buffer,
                                                 size_t size) {
+  if (!g_host) return 0;
   std::string data(static_cast<const char*>(buffer), size);
-  files_[std::string(filename)] = data;
+  const std::string name(filename);
+  if (!g_host->global_storage().write(name, data)) return 0;
   return size;
 }
 
 bool OEMCrypto_Level3CETestFileSystem::Exists(const char* filename) {
-  return files_.find(std::string(filename)) != files_.end();
+  if (!g_host) return false;
+  const std::string name(filename);
+  return g_host->global_storage().exists(name);
 }
 
 ssize_t OEMCrypto_Level3CETestFileSystem::FileSize(const char* filename) {
-  if (!Exists(filename)) return -1;
-  return files_[std::string(filename)].size();
+  if (!g_host) return 0;
+  const std::string name(filename);
+  if (!g_host->global_storage().exists(name)) return 0;
+  return static_cast<ssize_t>(g_host->global_storage().size(name));
 }
 
 bool OEMCrypto_Level3CETestFileSystem::Remove(const char* filename) {
-  if (!Exists(filename)) return false;
-  files_.erase(std::string(filename));
-  return true;
+  if (!g_host) return false;
+  const std::string name(filename);
+  if (!g_host->global_storage().exists(name)) return false;
+  return g_host->global_storage().remove(name);
 }
 
 }  // namespace wvoec3