1 /*
2 * Copyright (c) 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 "cert_manager_file.h"
17
18 #include "securec.h"
19
20 #include "cert_manager_file_operator.h"
21 #include "cert_manager_mem.h"
22 #include "cert_manager_storage.h"
23 #include "cert_manager_updateflag.h"
24 #include "cm_cert_property_rdb.h"
25 #include "cm_log.h"
26 #include "cm_type.h"
27
CertManagerFileSize(const char * path,const char * fileName)28 inline uint32_t CertManagerFileSize(const char *path, const char *fileName)
29 {
30 return CmFileSize(path, fileName);
31 }
32
CertManagerFileRead(const char * path,const char * fileName,uint32_t offset,uint8_t * buf,uint32_t len)33 inline uint32_t CertManagerFileRead(const char *path, const char *fileName, uint32_t offset, uint8_t *buf, uint32_t len)
34 {
35 return CmFileRead(path, fileName, offset, buf, len);
36 }
37
CertManagerFileWrite(const char * path,const char * fileName,uint32_t offset,const uint8_t * buf,uint32_t len)38 inline int32_t CertManagerFileWrite(const char *path, const char *fileName,
39 uint32_t offset, const uint8_t *buf, uint32_t len)
40 {
41 return CmFileWrite(path, fileName, offset, buf, len);
42 }
43
CertManagerFileRemove(const char * path,const char * fileName)44 inline int32_t CertManagerFileRemove(const char *path, const char *fileName)
45 {
46 return CmFileRemove(path, fileName);
47 }
48
GetNumberOfFiles(const char * path)49 static int32_t GetNumberOfFiles(const char *path)
50 {
51 void *dir = CmOpenDir(path);
52 if (dir == NULL) {
53 CM_LOG_W("can't open directory");
54 return -1;
55 }
56
57 int32_t count = 0;
58 struct CmFileDirentInfo dire = {{0}};
59 while (CmGetDirFile(dir, &dire) == CMR_OK) {
60 count++;
61 }
62 (void)CmCloseDir(dir);
63 return count;
64 }
65
FreeFileNames(struct CmMutableBlob * fNames,uint32_t fileCount)66 void FreeFileNames(struct CmMutableBlob *fNames, uint32_t fileCount)
67 {
68 if (fNames == NULL) {
69 return ;
70 }
71
72 for (uint32_t i = 0; i < fileCount; i++) {
73 fNames[i].size = 0;
74 CM_FREE_PTR(fNames[i].data);
75 }
76 CMFree(fNames);
77 }
78
MallocFileNames(struct CmMutableBlob ** fNames,const char * path,uint32_t * fileCount)79 static int32_t MallocFileNames(struct CmMutableBlob **fNames, const char *path, uint32_t *fileCount)
80 {
81 int32_t fileNums = GetNumberOfFiles(path);
82 if (fileNums == 0) {
83 return CM_SUCCESS;
84 }
85
86 if (fileNums < 0) {
87 CM_LOG_E("Failed to obtain number of files from: path");
88 return CM_FAILURE;
89 }
90
91 if (fileNums > MAX_COUNT_CERTIFICATE) {
92 CM_LOG_E("cert count %d beyond MAX", fileNums);
93 return CMR_ERROR_INVALID_ARGUMENT;
94 }
95
96 uint32_t bufSize = sizeof(struct CmMutableBlob) * (uint32_t)fileNums;
97 struct CmMutableBlob *temp = (struct CmMutableBlob *)CMMalloc(bufSize);
98 if (temp == NULL) {
99 CM_LOG_E("Failed to allocate memory for file names");
100 return CMR_ERROR_MALLOC_FAIL;
101 }
102 (void)memset_s(temp, bufSize, 0, bufSize);
103
104 *fNames = temp;
105 *fileCount = (uint32_t)fileNums;
106
107 return CM_SUCCESS;
108 }
109
GetFileNames(const char * path,struct CmMutableBlob * fNames,uint32_t fileCount)110 static int32_t GetFileNames(const char *path, struct CmMutableBlob *fNames, uint32_t fileCount)
111 {
112 void *d = CmOpenDir(path);
113 if (d == NULL) {
114 CM_LOG_E("Failed to open directory");
115 return CM_FAILURE;
116 }
117
118 int32_t ret = CM_SUCCESS;
119 uint32_t i = 0;
120 struct CmFileDirentInfo dire = {0};
121 while (CmGetDirFile(d, &dire) == CMR_OK) {
122 /* get fileCount files first, verify in follow-up process, no need return err code */
123 if (i >= fileCount) {
124 CM_LOG_D("only get %u certfiles", fileCount);
125 break;
126 }
127
128 uint32_t nameSize = strlen(dire.fileName) + 1; /* include '\0' at end */
129 fNames[i].data = (uint8_t *)CMMalloc(nameSize); /* uniformly free memory by caller */
130 if (fNames[i].data == NULL) {
131 CM_LOG_E("malloc file name data failed");
132 ret = CMR_ERROR_MALLOC_FAIL;
133 break;
134 }
135
136 fNames[i].size = nameSize;
137 (void)memset_s(fNames[i].data, nameSize, 0, nameSize);
138 if (sprintf_s((char *)fNames[i].data, nameSize, "%s", dire.fileName) < 0) {
139 CM_LOG_E("copy file name failed");
140 ret = CM_FAILURE;
141 break;
142 }
143
144 i++;
145 }
146
147 (void) CmCloseDir(d);
148 if (i != fileCount) {
149 CM_LOG_E("get certfiles no enough");
150 ret = CM_FAILURE;
151 }
152
153 return ret;
154 }
155
CertManagerGetFilenames(struct CmMutableBlob * fileNames,const char * path)156 int32_t CertManagerGetFilenames(struct CmMutableBlob *fileNames, const char *path)
157 {
158 if ((fileNames == NULL) || (path == NULL)) {
159 CM_LOG_E("invalid parameters");
160 return CMR_ERROR_INVALID_ARGUMENT;
161 }
162
163 uint32_t fileCount = 0;
164 struct CmMutableBlob *fNames = NULL;
165 int32_t ret = MallocFileNames(&fNames, path, &fileCount);
166 if (ret != CM_SUCCESS) {
167 CM_LOG_E("Failed to malloc memory for files name");
168 return ret;
169 }
170
171 ret = GetFileNames(path, fNames, fileCount);
172 if (ret != CM_SUCCESS) {
173 CM_LOG_E("get file name failed");
174 FreeFileNames(fNames, fileCount);
175 return ret;
176 }
177
178 fileNames->data = (uint8_t *)fNames;
179 fileNames->size = fileCount;
180 return ret;
181 }
182
GetNumberOfDirs(const char * userIdPath)183 int32_t GetNumberOfDirs(const char *userIdPath)
184 {
185 void *dir = CmOpenDir(userIdPath);
186 if (dir == NULL) {
187 CM_LOG_W("can't open directory");
188 return CM_FAILURE;
189 }
190
191 int32_t fileCount = 0;
192 struct CmFileDirentInfo dire = {{0}};
193 while (CmGetSubDir(dir, &dire) == CMR_OK) {
194 fileCount++;
195 }
196 (void)CmCloseDir(dir);
197 return fileCount;
198 }
199
GetCertCount(const char * path)200 int32_t GetCertCount(const char *path)
201 {
202 return GetNumberOfFiles(path);
203 }