1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "datashare_adapter_impl.h"
17
18 #include <string>
19 #include <fcntl.h>
20 #include <sys/ioctl.h>
21 #include <sys/stat.h>
22 #include <sys/types.h>
23 #include <unistd.h>
24 #include <climits>
25
26 #include "nweb_log.h"
27 #include "foundation/ability/ability_base/interfaces/kits/native/uri/include/uri.h"
28 #include "foundation/distributeddatamgr/data_share/interfaces/inner_api/consumer/include/datashare_helper.h"
29 #include "foundation/systemabilitymgr/samgr/interfaces/innerkits/samgr_proxy/include/system_ability_definition.h"
30 #include "foundation/systemabilitymgr/samgr/interfaces/innerkits/samgr_proxy/include/iservice_registry.h"
31
32 namespace OHOS::NWeb {
33
34 constexpr char MEDIALIBRARY_DATA_URI[] = "datashare:///media";
35 // static
GetInstance()36 DatashareAdapterImpl& DatashareAdapterImpl::GetInstance()
37 {
38 static DatashareAdapterImpl instance;
39 return instance;
40 }
41
OpenDataShareUriForRead(const std::string & uriStr) const42 int DatashareAdapterImpl::OpenDataShareUriForRead(const std::string& uriStr) const
43 {
44 auto sam = OHOS::SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
45 if (sam == nullptr) {
46 WVLOG_E("open datashare uri read, system ability manager is null");
47 return -1;
48 }
49 auto remoteObj = sam->GetSystemAbility(OHOS::STORAGE_MANAGER_MANAGER_ID);
50 if (remoteObj == nullptr) {
51 WVLOG_E("open datashare uri read, remoteObj is null");
52 return -1;
53 }
54 auto dataShareHelper = DataShare::DataShareHelper::Creator(remoteObj, MEDIALIBRARY_DATA_URI);
55 if (dataShareHelper == nullptr) {
56 WVLOG_E("open datashare uri read, dataShareHelper is null");
57 return -1;
58 }
59 Uri uri = Uri(uriStr);
60 return dataShareHelper->OpenFile(uri, "r");
61 }
62
GetFileDisplayName(const std::string & uriStr)63 std::string DatashareAdapterImpl::GetFileDisplayName(const std::string& uriStr)
64 {
65 int fd = OpenDataShareUriForRead(uriStr);
66 if (fd < 0) {
67 WVLOG_E("fd is invaild ,return null");
68 return "";
69 }
70
71 char buf[PATH_MAX] = {'\0'};
72 char filePath[PATH_MAX] = {'\0'};
73
74 int ret = snprintf_s(buf, sizeof(buf), sizeof(buf), "/proc/self/fd/%d", fd);
75 if (ret < 0) {
76 close(fd);
77 WVLOG_E("GetFileDisplayName, snprintf failed with %{public}d", errno);
78 return "";
79 }
80
81 ret = readlink(buf, filePath, PATH_MAX - 1);
82 if (ret < 0) {
83 close(fd);
84 WVLOG_E("GetFileDisplayName, readlink failed with %{public}d", errno);
85 return "";
86 }
87
88 close(fd);
89 std::string fileName = filePath;
90 std::size_t firstSlash = fileName.rfind("/");
91 if (firstSlash == fileName.npos) {
92 WVLOG_E("GetFileDisplayName, get error path with %{public}s", fileName.c_str());
93 return "";
94 }
95 fileName = fileName.substr(firstSlash + 1, fileName.size() - firstSlash);
96 return fileName;
97 }
98 } // namespace OHOS::NWeb
99