1 files changed, 86 insertions, 0 deletions
diff --git a/sandbox/src/named_pipe_policy.cc b/sandbox/src/named_pipe_policy.cc
new file mode 100644
index 0000000..00182cf
--- /dev/null
+++ b/sandbox/src/named_pipe_policy.cc
@@ -0,0 +1,86 @@
+// Copyright (c) 2006-2008 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 "sandbox/src/named_pipe_policy.h"
+
+#include <string>
+
+#include "sandbox/src/ipc_tags.h"
+#include "sandbox/src/policy_engine_opcodes.h"
+#include "sandbox/src/policy_params.h"
+#include "sandbox/src/sandbox_types.h"
+
+namespace {
+
+// Creates a named pipe and duplicates the handle to 'target_process'. The
+// remaining parameters are the same as CreateNamedPipeW().
+HANDLE CreateNamedPipeHelper(HANDLE target_process, LPCWSTR pipe_name,
+                              DWORD open_mode, DWORD pipe_mode,
+                              DWORD max_instances, DWORD out_buffer_size,
+                              DWORD in_buffer_size, DWORD default_timeout,
+                              LPSECURITY_ATTRIBUTES security_attributes) {
+  HANDLE pipe = ::CreateNamedPipeW(pipe_name, open_mode, pipe_mode,
+                                   max_instances, out_buffer_size,
+                                   in_buffer_size, default_timeout,
+                                   security_attributes);
+  if (INVALID_HANDLE_VALUE == pipe)
+    return pipe;
+
+  HANDLE new_pipe;
+  if (!::DuplicateHandle(::GetCurrentProcess(), pipe, target_process, &new_pipe,
+                         0, FALSE, DUPLICATE_CLOSE_SOURCE |
+                             DUPLICATE_SAME_ACCESS)) {
+    ::CloseHandle(pipe);
+    return INVALID_HANDLE_VALUE;
+  }
+
+  return new_pipe;
+}
+
+}  // namespace
+
+namespace sandbox {
+
+bool NamedPipePolicy::GenerateRules(const wchar_t* name,
+                                    TargetPolicy::Semantics semantics,
+                                    LowLevelPolicy* policy) {
+  if (TargetPolicy::NAMEDPIPES_ALLOW_ANY != semantics) {
+    return false;
+  }
+  PolicyRule pipe(ASK_BROKER);
+  if (!pipe.AddStringMatch(IF, NameBased::NAME, name, CASE_INSENSITIVE)) {
+    return false;
+  }
+  if (!policy->AddRule(IPC_CREATENAMEDPIPEW_TAG, &pipe)) {
+    return false;
+  }
+  return true;
+}
+
+DWORD NamedPipePolicy::CreateNamedPipeAction(EvalResult eval_result,
+                                             const ClientInfo& client_info,
+                                             const std::wstring &name,
+                                             DWORD open_mode, DWORD pipe_mode,
+                                             DWORD max_instances,
+                                             DWORD out_buffer_size,
+                                             DWORD in_buffer_size,
+                                             DWORD default_timeout,
+                                             HANDLE* pipe) {
+  // The only action supported is ASK_BROKER which means create the pipe.
+  if (ASK_BROKER != eval_result) {
+    return ERROR_ACCESS_DENIED;
+  }
+
+  *pipe = CreateNamedPipeHelper(client_info.process, name.c_str(),
+                                open_mode, pipe_mode, max_instances,
+                                out_buffer_size, in_buffer_size,
+                                default_timeout, NULL);
+
+  if (INVALID_HANDLE_VALUE == *pipe)
+    return ERROR_ACCESS_DENIED;
+
+  return ERROR_SUCCESS;
+}
+
+}  // namespace sandbox