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 <unistd.h>
17 #include <securec.h>
18 #include "codec_hcb_util.h"
19 #include "hdf_log.h"
20 
21 #ifdef __OHOS_STANDARD_SYS__
22 #define HOST_CONFIG_PATH HDF_CONFIG_DIR
23 #define HOST_CHIP_PROD_CONFIG_PATH HDF_CHIP_PROD_CONFIG_DIR
24 #else
25 #define HOST_CONFIG_PATH "/system/etc/hdfconfig"
26 #endif
27 #define PRODUCT_PROPERTY "ro.build.product"
28 #define PRODUCT_NAME_MAX 128
29 
GetConfigFilePath(const char * productName,char * configPath,size_t configPathLen)30 static bool GetConfigFilePath(const char *productName, char *configPath, size_t configPathLen)
31 {
32     static const char *adapterConfigPath[] = {
33         HOST_CONFIG_PATH,
34         HOST_CHIP_PROD_CONFIG_PATH,
35     };
36 
37     size_t pathNum = sizeof(adapterConfigPath) / sizeof(adapterConfigPath[0]);
38     for (size_t i = 0; i < pathNum; ++i) {
39         if (sprintf_s(configPath, configPathLen - 1, "%s/hdf_%s.hcb", adapterConfigPath[i], productName) < 0) {
40             HDF_LOGE("failed to generate file path");
41             continue;
42         }
43 
44         if (access(configPath, F_OK | R_OK) == 0) {
45             return true;
46         }
47         HDF_LOGD("invalid config file path or permission:%{public}s", configPath);
48     }
49     return false;
50 }
51 
HdfGetHcsRootNode(void)52 const struct DeviceResourceNode *HdfGetHcsRootNode(void)
53 {
54     char productName[PRODUCT_NAME_MAX] = { 0 };
55     char configPath[PATH_MAX] = { 0 };
56 
57     int ret = strcpy_s(productName, PRODUCT_NAME_MAX, "default");
58     if (ret != HDF_SUCCESS) {
59         return NULL;
60     }
61 
62     if (!GetConfigFilePath(productName, configPath, PATH_MAX)) {
63         HDF_LOGE("failed to get config file path");
64         return NULL;
65     }
66 
67     SetHcsBlobPath(configPath);
68     const struct DeviceResourceNode *mgrRoot = HcsGetRootNode();
69     return mgrRoot;
70 }
71