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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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22  */
23 
24 /* @test
25  * @bug 6237956
26  * @summary We must be able to read zip files created by Unix Info-Zip
27  * @author Martin Buchholz
28  */
29 
30 import java.util.*;
31 import java.util.zip.*;
32 import java.io.*;
33 
34 public class InfoZip {
35     static int passed = 0, failed = 0;
36 
fail(String msg)37     static void fail(String msg) {
38         failed++;
39         new Exception(msg).printStackTrace();
40     }
41 
unexpected(Throwable t)42     static void unexpected(Throwable t) {
43         failed++;
44         t.printStackTrace();
45     }
46 
check(boolean condition, String msg)47     static void check(boolean condition, String msg) {
48         if (! condition)
49             fail(msg);
50     }
51 
check(boolean condition)52     static void check(boolean condition) {
53         check(condition, "Something's wrong");
54     }
55 
contents(ZipFile zf, ZipEntry ze)56     private static String contents(ZipFile zf, ZipEntry ze) throws Exception {
57         InputStream is = zf.getInputStream(ze);
58         String result = contents(is);
59         is.close();
60         return result;
61     }
62 
contents(InputStream is)63     private static String contents(InputStream is) throws Exception {
64         StringBuilder sb = new StringBuilder();
65         int c;
66         while ((c = is.read()) != -1)
67             sb.append((char)c);
68         return sb.toString();
69     }
70 
checkZipEntry(ZipEntry ze, String contents)71     private static void checkZipEntry(ZipEntry ze, String contents) {
72         check(ze.getName().equals("someFile"), "filename");
73         check(ze.getExtra() != null, "extra");
74         check(contents.equals("Message in a Bottle\n"), "contents");
75         check(ze.getSize() == "Message in a Bottle\n".length());
76     }
77 
78 
main(String[] args)79     public static void main(String[] args) throws Exception {
80         //----------------------------------------------------------------
81         // The file InfoZip.zip was created using Unix Info-Zip's zip, thus:
82         // echo Message in a Bottle > someFile; zip InfoZip.zip someFile
83         // Such a file has a LOC extra different from the CEN extra,
84         // which cannot happen using JDK APIs.
85         //----------------------------------------------------------------
86         File f = new File("InfoZip.zip");
87 
88         try (OutputStream os = new FileOutputStream(f)) {
89             os.write(new byte[]
90                 {'P', 'K', 3, 4, 10, 0, 0, 0, 0, 0, -68, 8, 'k',
91                  '2', 'V', -7, 'm', 9, 20, 0, 0, 0, 20, 0, 0, 0,
92                  8, 0, 21, 0, 's', 'o', 'm', 'e', 'F', 'i', 'l', 'e', 'U',
93                  'T', 9, 0, 3, 't', '_', '1', 'B', 't', '_', '1', 'B', 'U',
94                  'x', 4, 0, -14, 'v', 26, 4, 'M', 'e', 's', 's', 'a', 'g',
95                  'e', ' ', 'i', 'n', ' ', 'a', ' ', 'B', 'o', 't', 't', 'l', 'e',
96                  10, 'P', 'K', 1, 2, 23, 3, 10, 0, 0, 0, 0, 0,
97                  -68, 8, 'k', '2', 'V', -7, 'm', 9, 20, 0, 0, 0, 20,
98                  0, 0, 0, 8, 0, 13, 0, 0, 0, 0, 0, 1, 0,
99                  0, 0, -92, -127, 0, 0, 0, 0, 's', 'o', 'm', 'e', 'F',
100                  'i', 'l', 'e', 'U', 'T', 5, 0, 3, 't', '_', '1', 'B', 'U',
101                  'x', 0, 0, 'P', 'K', 5, 6, 0, 0, 0, 0, 1, 0,
102                  1, 0, 'C', 0, 0, 0, 'O', 0, 0, 0, 0, 0, });
103         }
104 
105         ZipEntry ze = null;
106         try (ZipFile zf = new ZipFile(f)) {
107             Enumeration<? extends ZipEntry> entries = zf.entries();
108             ze = entries.nextElement();
109             check(! entries.hasMoreElements());
110             checkZipEntry(ze, contents(zf, ze));
111         }
112 
113         try (FileInputStream fis = new FileInputStream(f);
114              ZipInputStream is = new ZipInputStream(fis))
115         {
116             ze = is.getNextEntry();
117             checkZipEntry(ze, contents(is));
118             check(is.getNextEntry() == null);
119         }
120         f.delete();
121         System.out.printf("passed = %d, failed = %d%n", passed, failed);
122         if (failed > 0) throw new Exception("Some tests failed");
123     }
124 }
125