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15 package org.mortbay.setuid;
16
17 import java.io.File;
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25
26 public class SetUID
27 {
28 public static final int OK = 0;
29 public static final int ERROR = -1;
30
31 public static native int setumask(int mask);
32 public static native int setuid(int uid);
33 public static native int setgid(int gid);
34
35 public static native Passwd getpwnam(String name) throws SecurityException;
36 public static native Passwd getpwuid(int uid) throws SecurityException;
37
38 public static native Group getgrnam(String name) throws SecurityException;
39 public static native Group getgrgid(int gid) throws SecurityException;
40
41 public static native RLimit getrlimitnofiles();
42 public static native int setrlimitnofiles(RLimit rlimit);
43
44 private static void loadLibrary()
45 {
46
47 try
48 {
49 if(System.getProperty("jetty.libsetuid.path") != null)
50 {
51 File lib = new File(System.getProperty("jetty.libsetuid.path"));
52 if(lib.exists())
53 {
54 System.load(lib.getCanonicalPath());
55 }
56 return;
57 }
58
59 }
60 catch (Throwable e)
61 {
62
63 if (Boolean.valueOf(System.getProperty("DEBUG")).booleanValue())
64 e.printStackTrace();
65 }
66
67 try
68 {
69 System.loadLibrary("setuid");
70 return;
71 }
72 catch (Throwable e)
73 {
74
75 if (Boolean.valueOf(System.getProperty("DEBUG")).booleanValue())
76 e.printStackTrace();
77 }
78
79
80 try
81 {
82 if(System.getProperty("jetty.home") != null)
83 {
84 File lib = new File(System.getProperty("jetty.home") + "/lib/ext/libsetuid.so");
85 if(lib.exists())
86 {
87 System.load(lib.getCanonicalPath());
88 }
89 return;
90 }
91
92 }
93 catch (Throwable e)
94 {
95 if (Boolean.valueOf(System.getProperty("DEBUG")).booleanValue())
96 e.printStackTrace();
97 }
98
99
100 try
101 {
102 if(System.getProperty("jetty.lib") != null)
103 {
104 File lib = new File(System.getProperty("jetty.lib") + "/libsetuid.so");
105 if(lib.exists())
106 {
107 System.load(lib.getCanonicalPath());
108 }
109 return;
110 }
111
112 }
113 catch (Throwable e)
114 {
115 if (Boolean.valueOf(System.getProperty("DEBUG")).booleanValue())
116 e.printStackTrace();
117 }
118
119 System.err.println("Error: libsetuid.so could not be found");
120 }
121
122
123 static
124 {
125 loadLibrary();
126 }
127
128 }