/**
* Checks for all the permissions that need to be present to open a list
*
* @param pimListType CONTACT_LIST, EVENT_LIST or TODO_LIST
* @param mode READ_ONLY, WRITE_ONLY or READ_WRITE
* @throws IllegalArgumentException if one of the parameters is out of bounds
* @throws SecurityException if the application does not have the required permissions
*/
private void checkPermissions(int pimListType, int mode) {
int[] permissions = getPermissions(pimListType, mode);
MIDletSuite suite = Scheduler.getScheduler().getMIDletSuite();
/*
* Do a first pass on the permissions to make sure that none is
* automatically denied. This is for the case when both read permission
* and write permission are required. It is possible that, for example,
* read permission is granted only after asking the user, but write
* permission is automatically denied. In this case, the user should
* not be asked a question at all.
*/
for (int i = 0; i < permissions.length; i++) {
String name = Permissions.getName(permissions[i]);
int status = suite.checkPermission(name);
if (status == 0) {
// throw an exception
suite.checkIfPermissionAllowed(permissions[i]);
} else if (status == 1) {
// don't check this permission again
permissions[i] = -1;
}
}
for (int i = 0; i < permissions.length; i++) {
if (permissions[i] != -1) {
try {
suite.checkForPermission(permissions[i], null);
} catch (InterruptedException e) {
throw new SecurityException("Security check interrupted: " + e.getMessage());
}
}
}
}
/** Reads the suite settings from storage. */
private void readSettings() {
byte[] maximums = Permissions.getEmptySet();
byte[] currentLevels = Permissions.getEmptySet();
RandomAccessStream storage = new RandomAccessStream(classSecurityToken);
DataInputStream storageStream;
int version;
int count;
permissions = new byte[2][];
permissions[Permissions.MAX_LEVELS] = maximums;
permissions[Permissions.CUR_LEVELS] = currentLevels;
try {
storage.connect(getStorageRoot() + Installer.SETTINGS_FILENAME, Connector.READ);
try {
storageStream = storage.openDataInputStream();
version = storageStream.readByte();
/*
* only version 1 are handled by the method
* 0 means that this is a beta version that are not handled
* by the method. Note that version number only has to
* increase if data has been removed, not if new data has been
* added to the end of the file.
*/
if (version != 1) {
System.out.println("Corrupt application settings file.");
return;
}
trusted = storageStream.readBoolean();
pushInterruptSetting = storageStream.readByte();
count = storageStream.readByte();
storageStream.readFully(currentLevels, 0, count);
count = storageStream.readByte();
storageStream.readFully(maximums, 0, count);
} finally {
storage.disconnect();
}
} catch (IOException e) {
// ignore, old settings files are shorter
}
}
/**
* Checks for permission and throw an exception if not allowed. May block to ask the user a
* question.
*
* @param permission ID of the permission to check for, the ID must be from {@link Permissions}
* @param name name of the suite
* @param resource string to insert into the question, can be null
* @exception SecurityException if the permission is not allowed by this token
* @exception InterruptedException if another thread interrupts the calling thread while this
* method is waiting to preempt the display.
*/
protected void checkForPermission(int permission, String name, String resource)
throws InterruptedException {
String protocolName = null;
try {
int colon = resource.indexOf(':');
if (colon != -1) {
protocolName = resource.substring(0, colon);
}
} catch (Exception e) {
// ignore
}
securityToken.checkForPermission(
permission,
Permissions.getTitle(permission),
Permissions.getQuestion(permission),
name,
resource,
protocolName);
}
