1 /*
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13  * accompanied this code).
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23 
24 /**
25  * @test
26  * @bug 4615343
27  * @summary Check that ZipError is thrown instead of InternalError when
28  * iterating entries of an invalid zip file
29  */
30 
31 import java.io.*;
32 import java.util.*;
33 import java.util.zip.*;
34 
35 public class TestZipError {
realMain(String[] args)36     public static void realMain(String[] args) throws Throwable {
37         // Causing a ZipError is hard, especially on non-Windows systems.  See
38         // comments below.
39         String osName = System.getProperty("os.name");
40         if (!System.getProperty("os.name").startsWith("Windows")) {
41             return;
42         }
43 
44         String fileName = "error4615343.zip";
45         File f = new File(fileName);
46         f.delete();
47         ZipOutputStream zos;
48         ZipEntry ze;
49 
50         // Create a zip file with two entries.
51         zos = new ZipOutputStream(new FileOutputStream(f));
52         ze = new ZipEntry("one");
53         zos.putNextEntry(ze);
54         zos.write("hello".getBytes());
55         zos.closeEntry();
56         ze = new ZipEntry("two");
57         zos.putNextEntry(ze);
58         zos.write("world".getBytes());
59         zos.closeEntry();
60         zos.close();
61 
62         // Open the ZipFile.  This will read the zip file's central
63         // directory into in-memory data structures.
64         ZipFile zf = new ZipFile(fileName);
65 
66         // Delete the file; of course this does not change the in-memory data
67         // structures that represent the central directory!
68         f.delete();
69 
70         // Re-create zip file, with different entries than earlier.  However,
71         // recall that we have in-memory information about the central
72         // directory of the file at its previous state.
73         zos = new ZipOutputStream(new FileOutputStream(f));
74         ze = new ZipEntry("uno");
75         zos.putNextEntry(ze);
76         zos.write("hola".getBytes());
77         zos.closeEntry();
78         zos.close();
79 
80         // Iterate zip file's contents.  On Windows, this will result in a
81         // ZipError, because the data in the file differs from the in-memory
82         // central directory information we read earlier.
83         Enumeration<? extends ZipEntry> entries = zf.entries();
84         try {
85             while (entries.hasMoreElements()) {
86                 ze = entries.nextElement();
87             }
88             fail("Did not get expected exception");
89         } catch (ZipError e) {
90             pass();
91         } catch (InternalError e) {
92             fail("Caught InternalError instead of expected ZipError");
93         } catch (Throwable t) {
94             unexpected(t);
95         } finally {
96             zf.close();
97             f.delete();
98         }
99     }
100 
101     //--------------------- Infrastructure ---------------------------
102     static volatile int passed = 0, failed = 0;
pass()103     static void pass() {passed++;}
fail()104     static void fail() {failed++; Thread.dumpStack();}
fail(String msg)105     static void fail(String msg) {System.out.println(msg); fail();}
unexpected(Throwable t)106     static void unexpected(Throwable t) {failed++; t.printStackTrace();}
check(boolean cond)107     static void check(boolean cond) {if (cond) pass(); else fail();}
equal(Object x, Object y)108     static void equal(Object x, Object y) {
109         if (x == null ? y == null : x.equals(y)) pass();
110         else fail(x + " not equal to " + y);}
main(String[] args)111     public static void main(String[] args) throws Throwable {
112         try {realMain(args);} catch (Throwable t) {unexpected(t);}
113         System.out.println("\nPassed = " + passed + " failed = " + failed);
114         if (failed > 0) throw new AssertionError("Some tests failed");}
115 }
116