1/*
2 *  Copyright 2006 The WebRTC Project Authors. All rights reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "webrtc/base/win32.h"
12#include <shellapi.h>
13#include <shlobj.h>
14#include <tchar.h>
15
16#include <time.h>
17#include <algorithm>
18
19#include "webrtc/base/common.h"
20#include "webrtc/base/diskcache.h"
21#include "webrtc/base/pathutils.h"
22#include "webrtc/base/stream.h"
23#include "webrtc/base/stringencode.h"
24#include "webrtc/base/stringutils.h"
25
26#include "webrtc/base/diskcache_win32.h"
27
28namespace rtc {
29
30bool DiskCacheWin32::InitializeEntries() {
31  // Note: We could store the cache information in a separate file, for faster
32  // initialization.  Figuring it out empirically works, too.
33
34  std::wstring path16 = ToUtf16(folder_);
35  path16.append(1, '*');
36
37  WIN32_FIND_DATA find_data;
38  HANDLE find_handle = FindFirstFile(path16.c_str(), &find_data);
39  if (find_handle != INVALID_HANDLE_VALUE) {
40    do {
41      size_t index;
42      std::string id;
43      if (!FilenameToId(ToUtf8(find_data.cFileName), &id, &index))
44        continue;
45
46      Entry* entry = GetOrCreateEntry(id, true);
47      entry->size += find_data.nFileSizeLow;
48      total_size_ += find_data.nFileSizeLow;
49      entry->streams = std::max(entry->streams, index + 1);
50      FileTimeToUnixTime(find_data.ftLastWriteTime, &entry->last_modified);
51
52    } while (FindNextFile(find_handle, &find_data));
53
54    FindClose(find_handle);
55  }
56
57  return true;
58}
59
60bool DiskCacheWin32::PurgeFiles() {
61  std::wstring path16 = ToUtf16(folder_);
62  path16.append(1, '*');
63  path16.append(1, '\0');
64
65  SHFILEOPSTRUCT file_op = { 0 };
66  file_op.wFunc = FO_DELETE;
67  file_op.pFrom = path16.c_str();
68  file_op.fFlags = FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT
69                   | FOF_NORECURSION | FOF_FILESONLY;
70  if (0 != SHFileOperation(&file_op)) {
71    LOG_F(LS_ERROR) << "Couldn't delete cache files";
72    return false;
73  }
74
75  return true;
76}
77
78bool DiskCacheWin32::FileExists(const std::string& filename) const {
79  DWORD result = ::GetFileAttributes(ToUtf16(filename).c_str());
80  return (INVALID_FILE_ATTRIBUTES != result);
81}
82
83bool DiskCacheWin32::DeleteFile(const std::string& filename) const {
84  return ::DeleteFile(ToUtf16(filename).c_str()) != 0;
85}
86
87}
88