Add code to deal with serial device disconnection

detection on Windows.

This patch added code to deal with serial device
disconnection detection problem on Windows. It gets the
COM port information from the device path and compare
the COM port information with the port information that
serial io handler holds. If they match, cancel read for
that port.

BUG=361606

Review URL: https://codereview.chromium.org/1439443002

Cr-Commit-Position: refs/heads/master@{#360193}

4 files changed, 119 insertions, 0 deletions

diff --git a/device/core/BUILD.gn b/device/core/BUILD.gn
index e85acb6..6f55190 100644
--- a/device/core/BUILD.gn
+++ b/device/core/BUILD.gn
@@ -8,6 +8,8 @@ component("core") {
   sources = [
     "device_client.cc",
     "device_client.h",
+    "device_info_query_win.cc",
+    "device_info_query_win.h",
     "device_monitor_win.cc",
     "device_monitor_win.h",
   ]
diff --git a/device/core/core.gyp b/device/core/core.gyp
index d27073d..6002a5f 100644
--- a/device/core/core.gyp
+++ b/device/core/core.gyp
@@ -19,6 +19,8 @@
       'sources': [
         'device_client.cc',
         'device_client.h',
+        'device_info_query_win.cc',
+        'device_info_query_win.h',
         'device_monitor_win.cc',
         'device_monitor_win.h',
       ],
diff --git a/device/core/device_info_query_win.cc b/device/core/device_info_query_win.cc
new file mode 100644
index 0000000..4d62b32
--- /dev/null
+++ b/device/core/device_info_query_win.cc
@@ -0,0 +1,66 @@
+// Copyright 2015 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 "device/core/device_info_query_win.h"
+
+#include <string.h>
+
+#include "base/strings/string_util.h"
+
+namespace device {
+
+DeviceInfoQueryWin::DeviceInfoQueryWin()
+    : device_info_list_(SetupDiCreateDeviceInfoList(nullptr, nullptr)) {
+  memset(&device_info_data_, 0, sizeof(device_info_data_));
+}
+
+DeviceInfoQueryWin::~DeviceInfoQueryWin() {
+  if (device_info_list_valid()) {
+    // Release |device_info_data_| only when it is valid.
+    if (device_info_data_.cbSize != 0)
+      SetupDiDeleteDeviceInfo(device_info_list_, &device_info_data_);
+    SetupDiDestroyDeviceInfoList(device_info_list_);
+  }
+}
+
+bool DeviceInfoQueryWin::AddDevice(const char* device_path) {
+  return SetupDiOpenDeviceInterfaceA(device_info_list_, device_path, 0,
+                                     nullptr) != FALSE;
+}
+
+bool DeviceInfoQueryWin::GetDeviceInfo() {
+  DCHECK_EQ(0U, device_info_data_.cbSize);
+  device_info_data_.cbSize = sizeof(device_info_data_);
+  if (!SetupDiEnumDeviceInfo(device_info_list_, 0, &device_info_data_)) {
+    // Clear cbSize to maintain the invariant.
+    device_info_data_.cbSize = 0;
+    return false;
+  }
+  return true;
+}
+
+bool DeviceInfoQueryWin::GetDeviceStringProperty(DWORD property,
+                                                 std::string* property_buffer) {
+  DWORD property_reg_data_type;
+  const size_t property_buffer_length = 512;
+  if (!SetupDiGetDeviceRegistryPropertyA(
+          device_info_list_, &device_info_data_, property,
+          &property_reg_data_type,
+          reinterpret_cast<PBYTE>(
+              base::WriteInto(property_buffer, property_buffer_length)),
+          static_cast<DWORD>(property_buffer_length), nullptr))
+    return false;
+
+  if (property_reg_data_type != REG_SZ)
+    return false;
+
+  // Shrink |property_buffer| down to its correct size.
+  size_t eos = property_buffer->find('\0');
+  if (eos != std::string::npos)
+    property_buffer->resize(eos);
+
+  return true;
+}
+
+}  // namespace device
diff --git a/device/core/device_info_query_win.h b/device/core/device_info_query_win.h
new file mode 100644
index 0000000..2e399e4
--- /dev/null
+++ b/device/core/device_info_query_win.h
@@ -0,0 +1,49 @@
+// Copyright 2015 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.
+
+#ifndef DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_
+#define DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_
+
+#include <windows.h>
+#include <setupapi.h>
+
+#include <string>
+
+#include "base/macros.h"
+#include "device/core/device_core_export.h"
+
+namespace device {
+
+// Wraps HDEVINFO and SP_DEVINFO_DATA into a class that can automatically
+// release them. Provides interfaces that can add a device using its
+// device path, get device info and get device string property.
+class DEVICE_CORE_EXPORT DeviceInfoQueryWin {
+ public:
+  DeviceInfoQueryWin();
+  ~DeviceInfoQueryWin();
+
+  // Add a device to |device_info_list_| using its |device_path| so that
+  // its device info can be retrieved.
+  bool AddDevice(const char* device_path);
+  // Get the device info and store it into |device_info_data_|, this function
+  // should be called at most once.
+  bool GetDeviceInfo();
+  // Get device string property and store it into |property_buffer|.
+  bool GetDeviceStringProperty(DWORD property, std::string* property_buffer);
+
+  bool device_info_list_valid() {
+    return device_info_list_ != INVALID_HANDLE_VALUE;
+  }
+
+ private:
+  HDEVINFO device_info_list_ = INVALID_HANDLE_VALUE;
+  // When device_info_data_.cbSize != 0, |device_info_data_| is valid.
+  SP_DEVINFO_DATA device_info_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceInfoQueryWin);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_CORE_DEVICE_INFO_QUERY_WIN_H_