Examples of java.security.Permissions.implies()

java.security.Permissions.implies()
Checks to see if this object's PermissionCollection for permissions of the specified permission's class implies the permissions expressed in the permission object. Returns true if the combination of permissions in the appropriate PermissionCollection (e.g., a FilePermissionCollection for a FilePermission) together imply the specified permission.
For example, suppose there is a FilePermissionCollection in this Permissions object, and it contains one FilePermission that specifies "read" access for all files in all subdirectories of the "/tmp" directory, and another FilePermission that specifies "write" access for all files in the "/tmp/scratch/foo" directory. Then if the implies method is called with a permission specifying both "read" and "write" access to files in the "/tmp/scratch/foo" directory, true is returned.
Additionally, if this PermissionCollection contains the AllPermission, this method will always return true.
@param permission the Permission object to check. @return true if "permission" is implied by the permissions in thePermissionCollection it belongs to, false if not.

                    Set<String> roles = roleResolver.getLogicalRoles(principals, rolePermissionsMap.keySet());


                    for (String role : roles) {
                        Permissions permissions = rolePermissionsMap.get(role);


                        if (permissions != null && permissions.implies(permission)) {
                            actual.set(role);
                            return true;
                        }
                    }

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      uncheckedPC.add(new WebResourcePermission("/restricted/post-only/*", "GET"));
      uncheckedPC.add(new WebResourcePermission("/restricted/not/*", ""));
      uncheckedPC.add(new WebResourcePermission("/unchecked/*:/restricted/not/*:/restricted/*:/restricted/put-only/excluded/*:/restricted/get-only/excluded/*:/restricted/any/*:/restricted/post-only/*:/restricted/get-only/*:/excluded/*", ""));


      assertTrue("unchecked is in excludedPC", excludedPC.implies(unchecked));
      assertTrue("excluded is NOT in uncheckedPC", uncheckedPC.implies(excluded) == false);
      
   }


   public void testQualifiedMatch()
   {

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      perms.add(p);
      p = new WebUserDataPermission("/protected/exact/get/roleA", "GET");
      perms.add(p);


      p = new WebUserDataPermission("/protected/exact/get/roleA", null);
      assertFalse("/protected/exact/get/roleA null is implied", perms.implies(p));
   }


   public void testQualifiedPatterns()
   {
      try

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      {  
         try
         {
            Permissions perms = this.getPermissionsForRole("*");
            if(perms != null)
               implied = perms.implies(new WebResourcePermission("/*",(String)null)); 
         }
         catch (PolicyContextException e)
         {
            throw new RuntimeException(e);
         }

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                    // avoiding duplicates
                    synchronized (newPerms) {
                        e = newPerms.elements();
                        while (e.hasMoreElements()) {
                            Permission newPerm = e.nextElement();
                            if (!perms.implies(newPerm)) {
                                perms.add(newPerm);
                                if (debug != null)
                                    debug.println (
                                        "Adding perm " + newPerm + "\n");
                            }

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        // avoiding duplicates
        synchronized (newPerms) {
      e = newPerms.elements();
      while (e.hasMoreElements()) {
          Permission newPerm = (Permission)e.nextElement();
          if (!perms.implies(newPerm)) {
        perms.add(newPerm);
        if (debug != null) 
            debug.println (
          "Adding perm " + newPerm + "\n");
          }

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    perm[6] = new FilePermission("hello.file", "write");
    Permissions perms = new Permissions();
    for (int i = 0; i < perm.length; i++) {
      perms.add(perm[i]);
    }
    assertTrue("Returned true for non-subset of files", !perms
        .implies(new FilePermission("<<ALL FILES>>", "execute")));
    assertTrue("Returned true for non-subset of action", !perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s + "*",
            "execute")));
    assertTrue("Returned false for subset of actions", perms

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    for (int i = 0; i < perm.length; i++) {
      perms.add(perm[i]);
    }
    assertTrue("Returned true for non-subset of files", !perms
        .implies(new FilePermission("<<ALL FILES>>", "execute")));
    assertTrue("Returned true for non-subset of action", !perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s + "*",
            "execute")));
    assertTrue("Returned false for subset of actions", perms
        .implies(new FilePermission("*", "write")));
    assertTrue("Returned false for subset of files", perms

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    assertTrue("Returned true for non-subset of files", !perms
        .implies(new FilePermission("<<ALL FILES>>", "execute")));
    assertTrue("Returned true for non-subset of action", !perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s + "*",
            "execute")));
    assertTrue("Returned false for subset of actions", perms
        .implies(new FilePermission("*", "write")));
    assertTrue("Returned false for subset of files", perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s
            + "test.file", "read")));
    assertTrue("Returned false for subset of files and actions", perms

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    assertTrue("Returned true for non-subset of action", !perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s + "*",
            "execute")));
    assertTrue("Returned false for subset of actions", perms
        .implies(new FilePermission("*", "write")));
    assertTrue("Returned false for subset of files", perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s
            + "test.file", "read")));
    assertTrue("Returned false for subset of files and actions", perms
        .implies(new FilePermission(s + "tmp" + s + "test" + s
            + "test2.file", "write")));

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