1 /*
2 * Copyright (c) 2020-2022 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 <ohos_errno.h>
17 #include <ohos_init.h>
18 #include <pthread.h>
19 #include <string.h>
20
21 #include "feature.h"
22 #include "iproxy_client.h"
23 #include "iproxy_server.h"
24 #include "iunknown.h"
25 #include "liteipc_adapter.h"
26 #include "log.h"
27
28 #include "pms.h"
29 #include "pms_common.h"
30 #include "pms_types.h"
31 #include "samgr_lite.h"
32 #include "service.h"
33
34 typedef struct PermLiteApi {
35 INHERIT_SERVER_IPROXY;
36 int (*CheckPermission)(int uid, const char *permissionName);
37 int (*QueryPermission)(const char *identifier, PermissionSaved **permissions, int *permNum);
38 } PermLiteApi;
39
40 typedef struct PermLite {
41 INHERIT_FEATURE;
42 INHERIT_IUNKNOWNENTRY(PermLiteApi);
43 Identity identity;
44 } PermLite;
45
46 enum FUNCID {
47 ID_CHECK_SELF = 0,
48 ID_QUERY,
49 };
50
51 static void Init(void);
52 static const char *GetName(Feature *feature);
53 static void OnInitialize(Feature *feature, Service *parent, Identity identity);
54 static void OnStop(Feature *feature, Identity identity);
55 static BOOL OnMessage(Feature *feature, Request *request);
56 static int32 Invoke(IServerProxy *iProxy, int funcId, void *origin, IpcIo *req, IpcIo *reply);
57
58 static PermLite g_permlite = {
59 .GetName = GetName,
60 .OnInitialize = OnInitialize,
61 .OnStop = OnStop,
62 .OnMessage = OnMessage,
63 SERVER_IPROXY_IMPL_BEGIN,
64 .Invoke = Invoke,
65 .CheckPermission = CheckPermissionStat,
66 .QueryPermission = QueryPermission,
67 IPROXY_END,
68 .identity = {-1, -1, NULL},
69 };
70
Init(void)71 static void Init(void)
72 {
73 SAMGR_GetInstance()->RegisterFeature(PERMISSION_SERVICE, (Feature *)&g_permlite);
74 SAMGR_GetInstance()->RegisterFeatureApi(PERMISSION_SERVICE, PERM_FEATURE, GET_IUNKNOWN(g_permlite));
75 HILOG_INFO(HILOG_MODULE_APP, "Init pms lite feature success");
76 }
77 APP_FEATURE_INIT(Init);
78
GetName(Feature * feature)79 static const char *GetName(Feature *feature)
80 {
81 (void)feature;
82 return PERM_FEATURE;
83 }
84
OnInitialize(Feature * feature,Service * parent,Identity identity)85 static void OnInitialize(Feature *feature, Service *parent, Identity identity)
86 {
87 (void)parent;
88 if (feature == NULL) {
89 return;
90 }
91 PermLite *permlite = (PermLite *)feature;
92 permlite->identity = identity;
93 HILOG_INFO(HILOG_MODULE_APP, "onInitialize pms lite feature");
94 }
95
OnStop(Feature * feature,Identity identity)96 static void OnStop(Feature *feature, Identity identity)
97 {
98 (void)feature;
99 (void)identity;
100 }
101
OnMessage(Feature * feature,Request * request)102 static BOOL OnMessage(Feature *feature, Request *request)
103 {
104 if (feature == NULL || request == NULL) {
105 return FALSE;
106 }
107 // call func
108 return TRUE;
109 }
110
InnerFreeDataBuff(void * ptr)111 void static InnerFreeDataBuff(void *ptr)
112 {
113 if (ptr != NULL) {
114 free(ptr);
115 }
116 }
117
ReplyCheckSelfPermission(const void * origin,IpcIo * req,IpcIo * reply,PermLiteApi * api)118 static void ReplyCheckSelfPermission(const void *origin, IpcIo *req, IpcIo *reply, PermLiteApi* api)
119 {
120 pid_t callingPid = GetCallingPid(origin);
121 uid_t callingUid = GetCallingUid(origin);
122 HILOG_INFO(HILOG_MODULE_APP, "Enter ID_CHECKSELF, [callerPid: %d][callerUid: %u]", callingPid, callingUid);
123
124 size_t permLen = 0;
125 char *permName = (char *)IpcIoPopString(req, &permLen);
126 int32_t ret = api->CheckPermission(callingUid, permName);
127 HILOG_INFO(HILOG_MODULE_APP, "check self permission, [uid: %u][perm: %s][ret: %d]", callingUid, permName, ret);
128 IpcIoPushInt32(reply, ret);
129 }
130
ReplyQueryPermission(const void * origin,IpcIo * req,IpcIo * reply)131 static void ReplyQueryPermission(const void *origin, IpcIo *req, IpcIo *reply)
132 {
133 pid_t callingPid = GetCallingPid(origin);
134 uid_t callingUid = GetCallingUid(origin);
135 HILOG_INFO(HILOG_MODULE_APP, "Enter ID_Query, [callerPid: %d][callerUid: %u]", callingPid, callingUid);
136 size_t idLen = 0;
137 int ret = 0;
138 char *identifier = (char *)IpcIoPopString(req, &idLen);
139 char *jsonStr = QueryPermissionString(identifier, &ret);
140 if (jsonStr == NULL) {
141 return;
142 }
143
144 IpcIoPushInt32(reply, ret);
145 if (ret != PERM_ERRORCODE_SUCCESS) {
146 free(jsonStr);
147 return;
148 }
149 #ifndef __LINUX__
150 BuffPtr dataBuff = {
151 .buffSz = strlen(jsonStr) + 1,
152 .buff = (char *)jsonStr,
153 };
154 IpcIoPushDataBuffWithFree(reply, &dataBuff, InnerFreeDataBuff);
155 #else
156 IpcIoPushString(reply, jsonStr);
157 free(jsonStr);
158 #endif
159 }
160
Invoke(IServerProxy * iProxy,int funcId,void * origin,IpcIo * req,IpcIo * reply)161 static int32 Invoke(IServerProxy *iProxy, int funcId, void *origin, IpcIo *req, IpcIo *reply)
162 {
163 PermLiteApi *api = (PermLiteApi *)iProxy;
164 switch (funcId) {
165 case ID_CHECK_SELF:
166 ReplyCheckSelfPermission(origin, req, reply, api);
167 break;
168 case ID_QUERY:
169 ReplyQueryPermission(origin, req, reply);
170 break;
171 default:
172 break;
173 }
174 return EC_SUCCESS;
175 }
176