1 /* 2 * libjingle 3 * Copyright 2006, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "talk/base/win32.h" 29 #include <shellapi.h> 30 #include <shlobj.h> 31 #include <tchar.h> 32 33 #include <time.h> 34 35 #include "talk/base/common.h" 36 #include "talk/base/diskcache.h" 37 #include "talk/base/pathutils.h" 38 #include "talk/base/stream.h" 39 #include "talk/base/stringencode.h" 40 #include "talk/base/stringutils.h" 41 42 #include "talk/base/diskcache_win32.h" 43 44 namespace talk_base { 45 46 bool DiskCacheWin32::InitializeEntries() { 47 // Note: We could store the cache information in a separate file, for faster 48 // initialization. Figuring it out empirically works, too. 49 50 std::wstring path16 = ToUtf16(folder_); 51 path16.append(1, '*'); 52 53 WIN32_FIND_DATA find_data; 54 HANDLE find_handle = FindFirstFile(path16.c_str(), &find_data); 55 if (find_handle != INVALID_HANDLE_VALUE) { 56 do { 57 size_t index; 58 std::string id; 59 if (!FilenameToId(ToUtf8(find_data.cFileName), &id, &index)) 60 continue; 61 62 Entry* entry = GetOrCreateEntry(id, true); 63 entry->size += find_data.nFileSizeLow; 64 total_size_ += find_data.nFileSizeLow; 65 entry->streams = _max(entry->streams, index + 1); 66 FileTimeToUnixTime(find_data.ftLastWriteTime, &entry->last_modified); 67 68 } while (FindNextFile(find_handle, &find_data)); 69 70 FindClose(find_handle); 71 } 72 73 return true; 74 } 75 76 bool DiskCacheWin32::PurgeFiles() { 77 std::wstring path16 = ToUtf16(folder_); 78 path16.append(1, '*'); 79 path16.append(1, '\0'); 80 81 SHFILEOPSTRUCT file_op = { 0 }; 82 file_op.wFunc = FO_DELETE; 83 file_op.pFrom = path16.c_str(); 84 file_op.fFlags = FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT 85 | FOF_NORECURSION | FOF_FILESONLY; 86 if (0 != SHFileOperation(&file_op)) { 87 LOG_F(LS_ERROR) << "Couldn't delete cache files"; 88 return false; 89 } 90 91 return true; 92 } 93 94 bool DiskCacheWin32::FileExists(const std::string& filename) const { 95 DWORD result = ::GetFileAttributes(ToUtf16(filename).c_str()); 96 return (INVALID_FILE_ATTRIBUTES != result); 97 } 98 99 bool DiskCacheWin32::DeleteFile(const std::string& filename) const { 100 return ::DeleteFile(ToUtf16(filename).c_str()) != 0; 101 } 102 103 } 104
