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 "dlp_zip.h"
17
18 #include <cstdlib>
19 #include <cstdio>
20 #include <fcntl.h>
21 #include <memory>
22 #include <string>
23 #include <sys/stat.h>
24 #include <sys/types.h>
25 #include <unistd.h>
26 #include "dlp_permission_log.h"
27
28 #include "securec.h"
29
30 namespace OHOS {
31 namespace Security {
32 namespace DlpPermission {
33 using Defer = std::shared_ptr<void>;
34 namespace {
35 static constexpr OHOS::HiviewDFX::HiLogLabel LABEL = {LOG_CORE, SECURITY_DOMAIN_DLP_PERMISSION, "DlpFileZip"};
36 const uint32_t ZIP_BUFF_SIZE = 1024;
37 const int32_t DLP_ZIP_FAIL = -1;
38 const int32_t DLP_ZIP_OK = 0;
39 const std::string DLP_GENERAL_INFO = "dlp_general_info";
40 }
41
AddBuffToZip(const void * buf,uint32_t size,const char * nameInZip,const char * zipName)42 int32_t AddBuffToZip(const void *buf, uint32_t size, const char *nameInZip, const char *zipName)
43 {
44 zipFile zf = zipOpen64(zipName, APPEND_STATUS_ADDINZIP);
45 if (zf == nullptr) {
46 DLP_LOG_ERROR(LABEL, "AddBuffToZip fail err %{public}d, zipName %{public}s",
47 errno, zipName);
48 return DLP_ZIP_FAIL;
49 }
50 int opt_compress_level = 0;
51 zip_fileinfo zi = {};
52
53 int32_t err = zipOpenNewFileInZip3_64(zf, nameInZip, &zi,
54 NULL, 0, NULL, 0, NULL /* comment */,
55 (opt_compress_level != 0) ? Z_DEFLATED : 0,
56 opt_compress_level, 0,
57 /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
58 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
59 NULL, 0, 0);
60 if (err != ZIP_OK) {
61 DLP_LOG_ERROR(LABEL, "AddBuffToZip fail err %{public}d, nameInZip %{public}s", err, nameInZip);
62 (void)zipClose(zf, NULL);
63 return DLP_ZIP_FAIL;
64 }
65
66 err = zipWriteInFileInZip (zf, buf, (unsigned)size);
67 if (err != ZIP_OK) {
68 DLP_LOG_ERROR(LABEL, "zipWriteInFileInZip fail err %{public}d, %{public}s", err, nameInZip);
69 }
70
71 if (zipCloseFileInZip(zf) != ZIP_OK) {
72 DLP_LOG_ERROR(LABEL, "zipCloseFileInZip fail nameInZip %{public}s", nameInZip);
73 }
74
75 if (zipClose(zf, NULL) != ZIP_OK) {
76 DLP_LOG_ERROR(LABEL, "zipClose fail nameInZip %{public}s", nameInZip);
77 return DLP_ZIP_FAIL;
78 }
79
80 return DLP_ZIP_OK;
81 }
82
AddFileContextToZip(int32_t fd,const char * nameInZip,const char * zipName)83 int32_t AddFileContextToZip(int32_t fd, const char *nameInZip, const char *zipName)
84 {
85 zipFile zf = zipOpen64(zipName, APPEND_STATUS_ADDINZIP);
86 if (zf == nullptr) {
87 DLP_LOG_ERROR(LABEL, "AddFileContextToZip fail err %{public}d, zipName %{public}s",
88 errno, zipName);
89 return DLP_ZIP_FAIL;
90 }
91 int32_t opt_compress_level = 0;
92 zip_fileinfo zi = {};
93
94 int32_t err = zipOpenNewFileInZip3_64(zf, nameInZip, &zi,
95 NULL, 0, NULL, 0, NULL /* comment */,
96 (opt_compress_level != 0) ? Z_DEFLATED : 0,
97 opt_compress_level, 0,
98 /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
99 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
100 NULL, 0, 0);
101 if (err != ZIP_OK) {
102 DLP_LOG_ERROR(LABEL, "create zip file fail err %{public}d, nameInZip %{public}s", err, nameInZip);
103 zipClose(zf, NULL);
104 return DLP_ZIP_FAIL;
105 }
106
107 int32_t size_read;
108 auto buf = std::make_unique<char[]>(ZIP_BUFF_SIZE);
109 while ((size_read = read(fd, buf.get(), ZIP_BUFF_SIZE)) > 0) {
110 err = zipWriteInFileInZip (zf, buf.get(), (unsigned)size_read);
111 if (err != ZIP_OK) {
112 DLP_LOG_ERROR(LABEL, "zipWriteInFileInZip fail err %{public}d, %{public}s", err, nameInZip);
113 break;
114 }
115 }
116
117 if (size_read == -1) {
118 DLP_LOG_ERROR(LABEL, "read errno %{public}s", strerror(errno));
119 }
120
121 if (zipCloseFileInZip(zf) != ZIP_OK) {
122 DLP_LOG_ERROR(LABEL, "zipCloseFileInZip fail nameInZip %{public}s", nameInZip);
123 }
124
125 if (zipClose(zf, NULL) != ZIP_OK) {
126 DLP_LOG_ERROR(LABEL, "zipClose fail nameInZip %{public}s", nameInZip);
127 return DLP_ZIP_FAIL;
128 }
129
130 return DLP_ZIP_OK;
131 }
132
OpenZipFile(int fd)133 static zipFile OpenZipFile(int fd)
134 {
135 zipFile uf;
136 int32_t fd2 = dup(fd);
137 if (fd2 == -1) {
138 DLP_LOG_ERROR(LABEL, "dup fail errno %{public}d", errno);
139 return nullptr;
140 }
141
142 FILE *ff = fdopen(fd2, "rb");
143 if (ff == nullptr) {
144 DLP_LOG_ERROR(LABEL, "fdopen fail errno %{public}d", errno);
145 (void)close(fd2);
146 return nullptr;
147 }
148
149 uf = unzOpenFile(ff);
150 if (uf == nullptr) {
151 DLP_LOG_ERROR(LABEL, "unzOpenFile fail errno %{public}d", errno);
152 return nullptr;
153 }
154 return uf;
155 }
156
UnzipSpecificFile(int32_t fd,const char * nameInZip,const char * unZipName)157 int32_t UnzipSpecificFile(int32_t fd, const char*nameInZip, const char *unZipName)
158 {
159 zipFile uf;
160 int32_t outFd = open(unZipName, O_RDWR | O_CREAT | O_TRUNC, S_IRWXU);
161 if (outFd == -1) {
162 DLP_LOG_ERROR(LABEL, "open fail %{public}s errno %{public}d", unZipName, errno);
163 return DLP_ZIP_FAIL;
164 }
165 Defer p(nullptr, [&](...) {
166 close(outFd);
167 });
168
169 uf = OpenZipFile(fd);
170 if (uf == nullptr) {
171 return DLP_ZIP_FAIL;
172 }
173
174 if (unzLocateFile(uf, nameInZip, 0) != UNZ_OK) {
175 DLP_LOG_ERROR(LABEL, "unzLocateFile fail %{public}s errno %{public}d", nameInZip, errno);
176 (void)unzClose(uf);
177 return DLP_ZIP_FAIL;
178 }
179
180 int32_t err = unzOpenCurrentFile(uf);
181 if (err != UNZ_OK) {
182 DLP_LOG_ERROR(LABEL, "unzOpenCurrentFile fail %{public}s errno %{public}d", nameInZip, err);
183 (void)unzClose(uf);
184 return DLP_ZIP_FAIL;
185 }
186
187 int32_t readSize;
188 auto buf = std::make_unique<char[]>(ZIP_BUFF_SIZE);
189 do {
190 readSize = unzReadCurrentFile(uf, buf.get(), ZIP_BUFF_SIZE);
191 int32_t writeSize = write(outFd, buf.get(), readSize);
192 if (writeSize != readSize) {
193 err = DLP_ZIP_FAIL;
194 DLP_LOG_ERROR(LABEL, "write zip fail %{public}s errno %{public}d write %{public}d read %{public}d",
195 nameInZip, errno, writeSize, readSize);
196 break;
197 }
198 } while (readSize > 0);
199
200 if (readSize < 0) {
201 DLP_LOG_ERROR(LABEL, "unzReadCurrentFile fail %{public}s errno %{public}d", nameInZip, errno);
202 }
203
204 if (unzCloseCurrentFile(uf) != ZIP_OK) {
205 DLP_LOG_ERROR(LABEL, "unzCloseCurrentFile fail nameInZip %{public}s", nameInZip);
206 }
207
208 if (unzClose(uf) != ZIP_OK) {
209 DLP_LOG_ERROR(LABEL, "zipClose fail nameInZip %{public}s", nameInZip);
210 return DLP_ZIP_FAIL;
211 }
212
213 return err;
214 }
215
IsZipFile(int32_t fd)216 bool IsZipFile(int32_t fd)
217 {
218 int32_t fd2 = dup(fd);
219 if (fd2 == -1) {
220 DLP_LOG_ERROR(LABEL, "dup fail %{public}d, %{public}d", fd2, errno);
221 return false;
222 }
223 FILE *ff = fdopen(fd2, "rb");
224 if (ff == nullptr) {
225 DLP_LOG_ERROR(LABEL, "fdopen fail %{public}d", errno);
226 (void)close(fd2);
227 return false;
228 }
229 unzFile uz = unzOpenFile(ff);
230 if (uz == nullptr) {
231 DLP_LOG_ERROR(LABEL, "unzOpenFile fail, %{public}d", errno);
232 return false;
233 }
234
235 if (unzLocateFile(uz, DLP_GENERAL_INFO.c_str(), 0) != UNZ_OK) {
236 DLP_LOG_ERROR(LABEL, "unzLocateFile fail %{public}s errno %{public}d", DLP_GENERAL_INFO.c_str(), errno);
237 (void)unzClose(uz);
238 return false;
239 }
240
241 (void)unzClose(uz);
242 return true;
243 }
244 } // namespace DlpPermission
245 } // namespace Security
246 } // namespace OHOS
247