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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/browser/media_galleries/win/mtp_device_operations_util.h" | 5 #include "chrome/browser/media_galleries/win/mtp_device_operations_util.h" |
| 6 | 6 |
| 7 #include <portabledevice.h> | 7 #include <portabledevice.h> |
| 8 #include <stdint.h> |
| 8 | 9 |
| 9 #include <algorithm> | 10 #include <algorithm> |
| 11 #include <limits> |
| 10 | 12 |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/files/file_path.h" | 13 #include "base/files/file_path.h" |
| 13 #include "base/files/file_util.h" | 14 #include "base/files/file_util.h" |
| 14 #include "base/logging.h" | 15 #include "base/logging.h" |
| 15 #include "base/numerics/safe_conversions.h" | 16 #include "base/numerics/safe_conversions.h" |
| 16 #include "base/strings/string_util.h" | 17 #include "base/strings/string_util.h" |
| 17 #include "base/threading/thread_restrictions.h" | 18 #include "base/threading/thread_restrictions.h" |
| 18 #include "base/time/time.h" | 19 #include "base/time/time.h" |
| 19 #include "base/win/scoped_co_mem.h" | 20 #include "base/win/scoped_co_mem.h" |
| 20 #include "base/win/scoped_propvariant.h" | 21 #include "base/win/scoped_propvariant.h" |
| 21 #include "chrome/common/chrome_constants.h" | 22 #include "chrome/common/chrome_constants.h" |
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| 143 FILETIME file_time; | 144 FILETIME file_time; |
| 144 if (last_modified_date.get().vt == VT_DATE && | 145 if (last_modified_date.get().vt == VT_DATE && |
| 145 VariantTimeToSystemTime(last_modified_date.get().date, &system_time) && | 146 VariantTimeToSystemTime(last_modified_date.get().date, &system_time) && |
| 146 SystemTimeToFileTime(&system_time, &file_time)) { | 147 SystemTimeToFileTime(&system_time, &file_time)) { |
| 147 *last_modified_time = base::Time::FromFileTime(file_time); | 148 *last_modified_time = base::Time::FromFileTime(file_time); |
| 148 } | 149 } |
| 149 } | 150 } |
| 150 | 151 |
| 151 // Gets the size of the file object in bytes from the property key values | 152 // Gets the size of the file object in bytes from the property key values |
| 152 // specified by the |properties_values|. On failure, return -1. | 153 // specified by the |properties_values|. On failure, return -1. |
| 153 int64 GetObjectSize(IPortableDeviceValues* properties_values) { | 154 int64_t GetObjectSize(IPortableDeviceValues* properties_values) { |
| 154 DCHECK(properties_values); | 155 DCHECK(properties_values); |
| 155 ULONGLONG actual_size; | 156 ULONGLONG actual_size; |
| 156 HRESULT hr = properties_values->GetUnsignedLargeIntegerValue(WPD_OBJECT_SIZE, | 157 HRESULT hr = properties_values->GetUnsignedLargeIntegerValue(WPD_OBJECT_SIZE, |
| 157 &actual_size); | 158 &actual_size); |
| 158 bool success = SUCCEEDED(hr) && (actual_size <= kint64max); | 159 bool success = SUCCEEDED(hr) && |
| 159 return success ? static_cast<int64>(actual_size) : -1; | 160 (actual_size <= |
| 161 static_cast<ULONGLONG>(std::numeric_limits<int64_t>::max())); |
| 162 return success ? static_cast<int64_t>(actual_size) : -1; |
| 160 } | 163 } |
| 161 | 164 |
| 162 // Gets the details of the object specified by the |object_id| given the media | 165 // Gets the details of the object specified by the |object_id| given the media |
| 163 // transfer protocol |device|. On success, returns true and fills in |name|, | 166 // transfer protocol |device|. On success, returns true and fills in |name|, |
| 164 // |is_directory|, |size|. |last_modified_time| will be filled in if possible, | 167 // |is_directory|, |size|. |last_modified_time| will be filled in if possible, |
| 165 // but failure to get it doesn't prevent success. | 168 // but failure to get it doesn't prevent success. |
| 166 bool GetObjectDetails(IPortableDevice* device, | 169 bool GetObjectDetails(IPortableDevice* device, |
| 167 const base::string16 object_id, | 170 const base::string16 object_id, |
| 168 base::string16* name, | 171 base::string16* name, |
| 169 bool* is_directory, | 172 bool* is_directory, |
| 170 int64* size, | 173 int64_t* size, |
| 171 base::Time* last_modified_time) { | 174 base::Time* last_modified_time) { |
| 172 base::ThreadRestrictions::AssertIOAllowed(); | 175 base::ThreadRestrictions::AssertIOAllowed(); |
| 173 DCHECK(device); | 176 DCHECK(device); |
| 174 DCHECK(!object_id.empty()); | 177 DCHECK(!object_id.empty()); |
| 175 DCHECK(name); | 178 DCHECK(name); |
| 176 DCHECK(is_directory); | 179 DCHECK(is_directory); |
| 177 DCHECK(size); | 180 DCHECK(size); |
| 178 DCHECK(last_modified_time); | 181 DCHECK(last_modified_time); |
| 179 base::win::ScopedComPtr<IPortableDeviceContent> content = | 182 base::win::ScopedComPtr<IPortableDeviceContent> content = |
| 180 GetDeviceContent(device); | 183 GetDeviceContent(device); |
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| 218 // Directory entry does not have size and last modified date property key | 221 // Directory entry does not have size and last modified date property key |
| 219 // values. | 222 // values. |
| 220 *size = 0; | 223 *size = 0; |
| 221 *last_modified_time = base::Time(); | 224 *last_modified_time = base::Time(); |
| 222 return true; | 225 return true; |
| 223 } | 226 } |
| 224 | 227 |
| 225 // Try to get the last modified time, but don't fail if we can't. | 228 // Try to get the last modified time, but don't fail if we can't. |
| 226 GetLastModifiedTime(properties_values.get(), last_modified_time); | 229 GetLastModifiedTime(properties_values.get(), last_modified_time); |
| 227 | 230 |
| 228 int64 object_size = GetObjectSize(properties_values.get()); | 231 int64_t object_size = GetObjectSize(properties_values.get()); |
| 229 if (object_size < 0) | 232 if (object_size < 0) |
| 230 return false; | 233 return false; |
| 231 *size = object_size; | 234 *size = object_size; |
| 232 return true; | 235 return true; |
| 233 } | 236 } |
| 234 | 237 |
| 235 // Creates an MTP device object entry for the given |device| and |object_id|. | 238 // Creates an MTP device object entry for the given |device| and |object_id|. |
| 236 // On success, returns true and fills in |entry|. | 239 // On success, returns true and fills in |entry|. |
| 237 MTPDeviceObjectEntry GetMTPDeviceObjectEntry(IPortableDevice* device, | 240 MTPDeviceObjectEntry GetMTPDeviceObjectEntry(IPortableDevice* device, |
| 238 const base::string16& object_id) { | 241 const base::string16& object_id) { |
| 239 base::ThreadRestrictions::AssertIOAllowed(); | 242 base::ThreadRestrictions::AssertIOAllowed(); |
| 240 DCHECK(device); | 243 DCHECK(device); |
| 241 DCHECK(!object_id.empty()); | 244 DCHECK(!object_id.empty()); |
| 242 base::string16 name; | 245 base::string16 name; |
| 243 bool is_directory; | 246 bool is_directory; |
| 244 int64 size; | 247 int64_t size; |
| 245 base::Time last_modified_time; | 248 base::Time last_modified_time; |
| 246 MTPDeviceObjectEntry entry; | 249 MTPDeviceObjectEntry entry; |
| 247 if (GetObjectDetails(device, object_id, &name, &is_directory, &size, | 250 if (GetObjectDetails(device, object_id, &name, &is_directory, &size, |
| 248 &last_modified_time)) { | 251 &last_modified_time)) { |
| 249 entry = MTPDeviceObjectEntry(object_id, name, is_directory, size, | 252 entry = MTPDeviceObjectEntry(object_id, name, is_directory, size, |
| 250 last_modified_time); | 253 last_modified_time); |
| 251 } | 254 } |
| 252 return entry; | 255 return entry; |
| 253 } | 256 } |
| 254 | 257 |
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| 405 object_entries.empty()) | 408 object_entries.empty()) |
| 406 return base::string16(); | 409 return base::string16(); |
| 407 // TODO(thestig): This DCHECK can fail. Multiple MTP objects can have | 410 // TODO(thestig): This DCHECK can fail. Multiple MTP objects can have |
| 408 // the same name. Handle the situation gracefully. Refer to crbug.com/169930 | 411 // the same name. Handle the situation gracefully. Refer to crbug.com/169930 |
| 409 // for more details. | 412 // for more details. |
| 410 DCHECK_EQ(1U, object_entries.size()); | 413 DCHECK_EQ(1U, object_entries.size()); |
| 411 return object_entries[0].object_id; | 414 return object_entries[0].object_id; |
| 412 } | 415 } |
| 413 | 416 |
| 414 } // namespace media_transfer_protocol | 417 } // namespace media_transfer_protocol |
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