Example usage for java.lang SecurityManager checkWrite

Introduction

In this page you can find the example usage for java.lang SecurityManager checkWrite.

Prototype

public void checkWrite(String file) 

Source Link

Document

Throws a SecurityException if the calling thread is not allowed to write to the file specified by the string argument.

Usage

From source file:Main.java

public static void main(String[] args) {

    System.setProperty("java.security.policy", "file:/C:/java.policy");

    SecurityManager sm = new Main();

    System.setSecurityManager(sm);

    sm.checkWrite("test.txt");

    System.out.println("Allowed!");
}

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From source file:Main.java

public static void main(String[] args) {

    System.setProperty("java.security.policy", "file:/C:/java.policy");

    SecurityManager sm = new Main();

    System.setSecurityManager(sm);

    FileDescriptor fd = new FileDescriptor();
    sm.checkWrite(fd);

    System.out.println("Allowed!");
}

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From source file:com.google.ratel.util.RatelUtils.java

/**
 * Returns true if Click resources (JavaScript, CSS, images etc) packaged in jars can be deployed to the root directory of the webapp,
 * false otherwise./*  w  w  w .  j  av  a  2  s . c om*/
 * <p/>
 * This method will return false in restricted environments where write access to the underlying file system is disallowed. Examples
 * where write access is not allowed include the WebLogic JEE server (this can be changed though) and Google App Engine.
 *
 * @param servletContext the application servlet context
 * @return true if writes are allowed, false otherwise
 */
public static boolean isResourcesDeployable(ServletContext servletContext) {
    try {
        boolean canWrite = (servletContext.getRealPath("/") != null);
        if (!canWrite) {
            return false;
        }

        // Since Google App Engine returns a value for getRealPath, check
        // SecurityManager if writes are allowed
        SecurityManager security = System.getSecurityManager();
        if (security != null) {
            security.checkWrite("/");
        }
        return true;
    } catch (Throwable e) {
        return false;
    }
}

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From source file:org.apache.click.util.ClickUtils.java

/**
 * Returns true if Click resources (JavaScript, CSS, images etc) packaged
 * in jars can be deployed to the root directory of the webapp, false
 * otherwise.//from w w w .j  a  v a2 s  .  c om
 * <p/>
 * This method will return false in restricted environments where write
 * access to the underlying file system is disallowed. Examples where
 * write access is not allowed include the WebLogic JEE server (this can be
 * changed though) and Google App Engine.
 *
 * @param servletContext the application servlet context
 * @return true if writes are allowed, false otherwise
 */
public static boolean isResourcesDeployable(ServletContext servletContext) {
    try {
        boolean canWrite = (servletContext.getRealPath("/") != null);
        if (!canWrite) {
            return false;
        }

        // Since Google App Engine returns a value for getRealPath, check
        // SecurityManager if writes are allowed
        SecurityManager security = System.getSecurityManager();
        if (security != null) {
            security.checkWrite("/click");
        }
        return true;
    } catch (Throwable e) {
        return false;
    }
}

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From source file:org.apache.fop.render.afp.AFPForeignAttributeReader.java

/**
 * Returns the resource level/* w ww  .java  2s . c o m*/
 *
 * @param foreignAttributes the foreign attributes
 * @return the resource level
 */
public AFPResourceLevel getResourceLevel(Map/*<QName, String>*/ foreignAttributes) {
    AFPResourceLevel resourceLevel = null;
    if (foreignAttributes != null && !foreignAttributes.isEmpty()) {
        if (foreignAttributes.containsKey(RESOURCE_LEVEL)) {
            String levelString = (String) foreignAttributes.get(RESOURCE_LEVEL);
            resourceLevel = AFPResourceLevel.valueOf(levelString);
            // if external get resource group file attributes
            if (resourceLevel != null && resourceLevel.isExternal()) {
                String resourceGroupFile = (String) foreignAttributes.get(RESOURCE_GROUP_FILE);
                if (resourceGroupFile == null) {
                    String msg = RESOURCE_GROUP_FILE + " not specified";
                    LOG.error(msg);
                    throw new UnsupportedOperationException(msg);
                }
                File resourceExternalGroupFile = new File(resourceGroupFile);
                SecurityManager security = System.getSecurityManager();
                try {
                    if (security != null) {
                        security.checkWrite(resourceExternalGroupFile.getPath());
                    }
                } catch (SecurityException ex) {
                    String msg = "unable to gain write access to external resource file: " + resourceGroupFile;
                    LOG.error(msg);
                }

                try {
                    boolean exists = resourceExternalGroupFile.exists();
                    if (exists) {
                        LOG.warn("overwriting external resource file: " + resourceGroupFile);
                    }
                    resourceLevel.setExternalFilePath(resourceGroupFile);
                } catch (SecurityException ex) {
                    String msg = "unable to gain read access to external resource file: " + resourceGroupFile;
                    LOG.error(msg);
                }
            }
        }
    }
    return resourceLevel;
}

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