1 /*
2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "config.h"
27 #include "NotImplemented.h"
28 #include "FileSystem.h"
29 #include "FileMetadata.h"
30 #include <wtf/java/JavaEnv.h>
31 #include <wtf/text/CString.h>
32
33
34 namespace WebCore {
35
36 namespace FileSystem {
37
38 static jclass GetFileSystemClass(JNIEnv* env)
39 {
40 static JGClass clazz(env->FindClass("com/sun/webkit/FileSystem"));
41 ASSERT(clazz);
42 return clazz;
43 }
44
45 bool fileExists(const String& path)
46 {
47 JNIEnv* env = WebCore_GetJavaEnv();
48
49 static jmethodID mid = env->GetStaticMethodID(
50 GetFileSystemClass(env),
51 "fwkFileExists",
52 "(Ljava/lang/String;)Z");
53 ASSERT(mid);
54
55 jboolean result = env->CallStaticBooleanMethod(
56 GetFileSystemClass(env),
57 mid,
58 (jstring)path.toJavaString(env));
59 CheckAndClearException(env);
60
61 return jbool_to_bool(result);
62 }
63
64 bool deleteFile(const String&)
65 {
66 notImplemented();
67 return false;
68 }
69
70 bool deleteEmptyDirectory(String const &)
71 {
72 notImplemented();
73 return false;
74 }
75
76 bool getFileSize(const String& path, long long& result)
77 {
78 JNIEnv* env = WebCore_GetJavaEnv();
79
80 static jmethodID mid = env->GetStaticMethodID(
81 GetFileSystemClass(env),
82 "fwkGetFileSize",
83 "(Ljava/lang/String;)J");
84 ASSERT(mid);
85
86 jlong size = env->CallStaticLongMethod(
87 GetFileSystemClass(env),
88 mid,
89 (jstring) path.toJavaString(env));
90 CheckAndClearException(env);
91
92 if (size >= 0) {
93 result = size;
94 return true;
95 } else {
96 return false;
97 }
98 }
99
100 bool getFileModificationTime(const String& path, time_t& result)
101 {
102 std::optional<FileMetadata> metadata = fileMetadata(path);
103 if (metadata) {
104 result = metadata->modificationTime;
105 return true;
106 } else {
107 return false;
108 }
109 }
110
111 bool getFileCreationTime(const String&, time_t&)
112 {
113 notImplemented(); // todo tav
114 return false;
115 }
116
117 String pathByAppendingComponents(StringView path, const Vector<StringView>& components)
118 {
119 String result = path.toString();
120 // FIXME-java: Use nio.file.Paths.get(...)
121 for (const auto& component : components) {
122 result = pathByAppendingComponent(result, component.toString());
123 }
124
125 return result;
126 }
127
128 String pathByAppendingComponent(const String& path, const String& component)
129 {
130 JNIEnv* env = WebCore_GetJavaEnv();
131
132 static jmethodID mid = env->GetStaticMethodID(
133 GetFileSystemClass(env),
134 "fwkPathByAppendingComponent",
135 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;");
136 ASSERT(mid);
137
138 JLString result = static_cast<jstring>(env->CallStaticObjectMethod(
139 GetFileSystemClass(env),
140 mid,
141 (jstring)path.toJavaString(env),
142 (jstring)component.toJavaString(env)));
143 CheckAndClearException(env);
144
145 return String(env, result);
146 }
147
148 bool makeAllDirectories(const String& path)
149 {
150 JNIEnv* env = WebCore_GetJavaEnv();
151
152 static jmethodID mid = env->GetStaticMethodID(
153 GetFileSystemClass(env),
154 "fwkMakeAllDirectories",
155 "(Ljava/lang/String;)Z");
156 ASSERT(mid);
157
158 jboolean result = env->CallStaticBooleanMethod(
159 GetFileSystemClass(env),
160 mid,
161 (jstring)path.toJavaString(env));
162 CheckAndClearException(env);
163
164 return jbool_to_bool(result);
165 }
166
167 String homeDirectoryPath()
168 {
169 notImplemented();
170 return "";
171 }
172
173 String directoryName(String const &)
174 {
175 notImplemented();
176 return String();
177 }
178
179 std::optional<FileMetadata> fileMetadata(const String& path)
180 {
181 JNIEnv* env = WebCore_GetJavaEnv();
182
183 static jmethodID mid = env->GetStaticMethodID(
184 GetFileSystemClass(env),
185 "fwkGetFileMetadata",
186 "(Ljava/lang/String;[J)Z");
187 ASSERT(mid);
188
189 JLocalRef<jlongArray> lArray(env->NewLongArray(3));
190
191 jboolean result = env->CallStaticBooleanMethod(
192 GetFileSystemClass(env),
193 mid,
194 (jstring)path.toJavaString(env), (jlongArray)lArray);
195 CheckAndClearException(env);
196
197 if (result) {
198 jlong* metadataResults = env->GetLongArrayElements(lArray, 0);
199 FileMetadata metadata {};
200 metadata.modificationTime = metadataResults[0] / 1000.0;
201 metadata.length = metadataResults[1];
202 metadata.type = static_cast<FileMetadata::Type>(metadataResults[2]);
203 env->ReleaseLongArrayElements(lArray, metadataResults, 0);
204 return metadata;
205 }
206 return {};
207 }
208
209 std::optional<FileMetadata> fileMetadataFollowingSymlinks(const String& path)
210 {
211 // TODO-java: Use nio Files to avoid sym link traversal
212 return fileMetadata(path);
213 }
214
215 Vector<String> listDirectory(const String&, const String&)
216 {
217 Vector<String> entities;
218 notImplemented();
219 return entities;
220 }
221
222 CString fileSystemRepresentation(const String& s)
223 {
224 notImplemented();
225 return CString(s.latin1().data());
226 }
227
228 String openTemporaryFile(const String&, PlatformFileHandle& handle)
229 {
230 notImplemented();
231 handle = invalidPlatformFileHandle;
232 return String();
233 }
234
235 PlatformFileHandle openFile(const String&, FileOpenMode)
236 {
237 notImplemented();
238 return invalidPlatformFileHandle;
239 }
240
241 void closeFile(PlatformFileHandle&)
242 {
243 notImplemented();
244 }
245
246 int readFromFile(PlatformFileHandle, char*, int)
247 {
248 notImplemented();
249 return -1;
250 }
251
252 int writeToFile(PlatformFileHandle, const char*, int)
253 {
254 notImplemented();
255 return -1;
256 }
257
258 String pathGetFileName(const String& path)
259 {
260 JNIEnv* env = WebCore_GetJavaEnv();
261
262 static jmethodID mid = env->GetStaticMethodID(
263 GetFileSystemClass(env),
264 "fwkPathGetFileName",
265 "(Ljava/lang/String;)Ljava/lang/String;");
266 ASSERT(mid);
267
268 JLString result = static_cast<jstring>(env->CallStaticObjectMethod(
269 GetFileSystemClass(env),
270 mid,
271 (jstring) path.toJavaString(env)));
272 CheckAndClearException(env);
273
274 return String(env, result);
275 }
276
277 long long seekFile(PlatformFileHandle, long long, FileSeekOrigin)
278 {
279 notImplemented();
280 return (long long)(-1);
281 }
282
283 std::optional<int32_t> getFileDeviceId(const CString&)
284 {
285 notImplemented();
286 return {};
287 }
288
289 } // namespace FileSystem
290
291 } // namespace WebCore