Examples of java.net.SocketPermission

java.net.SocketPermission
etf.org/rfc/rfc2732.txt">RFC 2732: Format for Literal IPv6 Addresses in URLs:
```
 ipv6reference = "[" IPv6address "]" 
```
For example, you can construct a SocketPermission instance as the following:
```
 String hostAddress = inetaddress.getHostAddress(); if (inetaddress instanceof Inet6Address) { sp = new SocketPermission("[" + hostAddress + "]:" + port, action); } else { sp = new SocketPermission(hostAddress + ":" + port, action); } 
```
or
```
 String host = url.getHost(); sp = new SocketPermission(host + ":" + port, action); 
```
The full uncompressed form of an IPv6 literal address is also valid.
The port or portrange is optional. A port specification of the form "N-", where N is a port number, signifies all ports numbered N and above, while a specification of the form "-N" indicates all ports numbered N and below.
The possible ways to connect to the host are
```
 accept connect listen resolve 
```
The "listen" action is only meaningful when used with "localhost". The "resolve" action is implied when any of the other actions are present. The action "resolve" refers to host/ip name service lookups.
As an example of the creation and meaning of SocketPermissions, note that if the following permission:
```
 p1 = new SocketPermission("puffin.eng.sun.com:7777", "connect,accept"); 
```
is granted to some code, it allows that code to connect to port 7777 on puffin.eng.sun.com, and to accept connections on that port.
Similarly, if the following permission:
```
 p1 = new SocketPermission("puffin.eng.sun.com:7777", "connect,accept"); p2 = new SocketPermission("localhost:1024-", "accept,connect,listen"); 
```
is granted to some code, it allows that code to accept connections on, connect to, or listen on any port between 1024 and 65535 on the local host.
Note: Granting code permission to accept or make connections to remote hosts may be dangerous because malevolent code can then more easily transfer and share confidential data among parties who may not otherwise have access to the data. @see java.security.Permissions @see SocketPermission @version 1.67 09/02/24 @author Marianne Mueller @author Roland Schemers @serial exclude

        }
        if (!host.startsWith("[") && host.indexOf(':') != -1) {
            host = "[" + host + "]";
        }
        if (port == -1)
            checkPermission(new SocketPermission(host,
                SecurityConstants.SOCKET_RESOLVE_ACTION),
                context);
        else
            checkPermission(new SocketPermission(host+":"+port,
                SecurityConstants.SOCKET_CONNECT_ACTION),
                context);
    }

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     * @exception  SecurityException  if the calling thread does not have
     *             permission to listen on the specified port.
     * @see        #checkPermission(java.security.Permission) checkPermission
     */
    public void checkListen(int port) {
        checkPermission(new SocketPermission("localhost:"+port,
            SecurityConstants.SOCKET_LISTEN_ACTION));
    }

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            throw new NullPointerException("host can't be null");
        }
        if (!host.startsWith("[") && host.indexOf(':') != -1) {
            host = "[" + host + "]";
        }
        checkPermission(new SocketPermission(host+":"+port,
            SecurityConstants.SOCKET_ACCEPT_ACTION));
    }

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    public void checkMulticast(InetAddress maddr) {
        String host = maddr.getHostAddress();
        if (!host.startsWith("[") && host.indexOf(':') != -1) {
            host = "[" + host + "]";
        }
        checkPermission(new SocketPermission(host,
            SecurityConstants.SOCKET_CONNECT_ACCEPT_ACTION));
    }

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    public void checkMulticast(InetAddress maddr, byte ttl) {
        String host = maddr.getHostAddress();
        if (!host.startsWith("[") && host.indexOf(':') != -1) {
            host = "[" + host + "]";
        }
        checkPermission(new SocketPermission(host,
            SecurityConstants.SOCKET_CONNECT_ACCEPT_ACTION));
    }

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            if (docURL.getPort() != -1) {
                docHost += ":" + docURL.getPort();
            }


            permissions[0][0] = "SocketPermission accept " + docHost;
            permissions[0][1] = new SocketPermission(docHost, "accept");
            permissions[1][0] = "SocketPermission connect " + docHost;
            permissions[1][1] = new SocketPermission(docHost, "connect");
            permissions[2][0] = "SocketPermission resolve " + docHost;
            permissions[2][1] = new SocketPermission(docHost, "resolve");
            nGrantedTmp = 3;
        } else {
            permissions = basePermissions;
        }

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     */
    public void test_ConstructorLjava_lang_StringLjava_lang_String() {
        assertEquals("Incorrect name", starName, star_Resolve.getName());
        assertEquals("Incorrect actions", "resolve", star_Resolve.getActions());


        SocketPermission sp1 = new SocketPermission("", "connect");
        assertEquals("Wrong name1", "localhost", sp1.getName());
        SocketPermission sp2 = new SocketPermission(":80", "connect");
        assertEquals("Wrong name2", ":80", sp2.getName());


        // Regression for HARMONY-1462
        SocketPermission sp3 = new SocketPermission("localhost:*", "listen");
        assertEquals("Wrong name3", "localhost:*", sp3.getName());
        // For all ports
        SocketPermission spAllPorts = new SocketPermission("localhost:0-65535",
                "listen");
        assertTrue("Port range error", sp3.implies(spAllPorts));
        assertTrue("Port range error", spAllPorts.implies(sp3));
    }

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                .equals(star_All));
        assertTrue("Same but returned unequal", www_All.equals(copyOfWww_All));
        assertTrue("Returned true when compared to a String", !www_All
                .equals(www_All.toString()));


        SocketPermission sp1 = new SocketPermission("TEST1.com",
                "resolve,connect");
        SocketPermission sp2 = new SocketPermission("test1.com",
                "resolve,connect");
        assertTrue("Different cases should be equal", sp1.equals(sp2));


        // Regression for HARMONY-1524
        assertFalse(sp1.equals(null));


        // Regression for HARMONY-3333
        sp1 = new SocketPermission("TEST1.com:333", "resolve");
        sp2 = new SocketPermission("test1.com:444", "resolve");
        assertTrue("Different cases should be equal", sp1.equals(sp2));


        sp1 = new SocketPermission(Support_Configuration.InetTestAddress,
                "resolve,connect");
        sp2 = new SocketPermission(Support_Configuration.InetTestIP,
                "resolve,connect");
        assertEquals("Same IP address should be equal", sp1, sp2);
    }

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        assertTrue("Wild should imply normal", star_All.implies(www_All));
        assertTrue("Normal shouldn't imply wildcard", !www_All
                .implies(star_Resolve));
        assertTrue("Resolve shouldn't imply all", !star_Resolve
                .implies(star_All));
        SocketPermission p1 = new SocketPermission(wwwName + ":80-81",
                "connect");
        SocketPermission p2 = new SocketPermission(wwwName + ":80", "connect");
        assertTrue("Port 80 is implied by 80-81", p1.implies(p2));
        p1 = new SocketPermission(wwwName + ":79-80", "connect");
        assertTrue("Port 80 is implied by 79-80", p1.implies(p2));
        p1 = new SocketPermission(wwwName + ":79-81", "connect");
        assertTrue("Port 80 is implied by 79-81", p1.implies(p2));
        p2 = new SocketPermission(wwwName + ":79-80", "connect");
        assertTrue("Port 79-80 is implied by 79-81", p1.implies(p2));
        p2 = new SocketPermission(wwwName, "resolve");
        assertTrue(
                "Any identical host should imply resolve regardless of the ports",
                p1.implies(p2));


        SocketPermission sp1 = new SocketPermission("www.Ibm.com", "resolve");
        SocketPermission sp2 = new SocketPermission("www.IBM.com", "resolve");
        assertTrue("SocketPermission is case sensitive", sp1.implies(sp2));


        SocketPermission sp3 = new SocketPermission("*.ibm.com", "resolve");
        assertTrue("SocketPermission wildcard is case sensitive", sp3
                .implies(sp2));


        InetAddress host = null;
        try {
            host = InetAddress.getByName(Support_Configuration.UnresolvedIP);
        } catch (UnknownHostException e) {
        }


        SocketPermission perm1 = new SocketPermission(
                Support_Configuration.UnresolvedIP, "connect");
        SocketPermission perm2 = new SocketPermission(
                Support_Configuration.UnresolvedIP + ":80", "connect");
        assertTrue("should imply port 80", perm1.implies(perm2));
        PermissionCollection col = perm1.newPermissionCollection();
        col.add(perm1);
        assertTrue("collection should imply port 80", col.implies(perm2));

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        assertTrue("Should imply resolve on " + starName, pc
                .implies(star_Resolve));
        assertTrue("Should imply all on " + wwwName, pc.implies(www_All));


        pc = star_Resolve.newPermissionCollection();
        SocketPermission p1 = new SocketPermission(wwwName + ":79-80",
                "connect");
        pc.add(p1);
        SocketPermission p2 = new SocketPermission(wwwName, "resolve");
        assertTrue(
                "Any identical host should imply resolve regardless of the ports",
                pc.implies(p2));
        assertTrue("A different host should not imply resolve", !pc
                .implies(star_Resolve));

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