/*
* Returns the service with the specified {@code type} implementing the
* specified {@code algorithm}, or {@code null} if no such implementation
* exists.
* <p/>
* If two services match the requested type and algorithm, the one added
* with the {@link #putService(Service)} is returned (as opposed to the one
* added via {@link #put(Object, Object)}.
*
* @param type
* the type of the service (for example {@code KeyPairGenerator})
* @param algorithm
* the algorithm name (case insensitive)
* @return the requested service, or {@code null} if no such implementation
* exists
*/
public Provider.Service getService(String type,
String algorithm)
{
lock (this)
{
if (type == null || algorithm == null)
{
throw new java.lang.NullPointerException();
}
if (type.equals(lastServiceName) &&
algorithm.equalsIgnoreCase(lastAlgorithm))
{
return(returnedService);
}
String alg = algorithm.toUpperCase();
Object o = null;
if (serviceTable != null)
{
o = serviceTable.get(type, alg);
}
if (o == null && aliasTable != null)
{
o = aliasTable.get(type, alg);
}
if (o == null)
{
updatePropertyServiceTable();
}
if (o == null && propertyServiceTable != null)
{
o = propertyServiceTable.get(type, alg);
}
if (o == null && propertyAliasTable != null)
{
o = propertyAliasTable.get(type, alg);
}
if (o != null)
{
lastServiceName = type;
lastAlgorithm = algorithm;
returnedService = (Provider.Service)o;
return(returnedService);
}
return(null);
}
}
/**
* Returns a {@code Set} of all registered algorithms for the specified
* cryptographic service. {@code "Signature"}, {@code "Cipher"} and {@code
* "KeyStore"} are examples for such kind of services.
*
* @param serviceName
* the case-insensitive name of the service.
* @return a {@code Set} of all registered algorithms for the specified
* cryptographic service, or an empty {@code Set} if {@code
* serviceName} is {@code null} or if no registered provider
* provides the requested service.
*/
public static java.util.Set <String> getAlgorithms(String serviceName)
{
java.util.HashSet <String> result = new java.util.HashSet <String>();
Provider[] p = getProviders();
for (int i = 0; i < p.Length; i++)
{
for (java.util.Iterator <Provider.Service> it = p[i].getServices().iterator(); it.hasNext();)
{
Provider.Service s = (Provider.Service)it.next();
if (Util.equalsIgnoreCase(s.getType(), serviceName))
{
result.add(s.getAlgorithm());
}
}
}
return(result);
}
/*
* Constructs a new instance of {@code SecureRandom}. An implementation for
* the highest-priority provider is returned. The constructed instance will
* not have been seeded.
*/
public SecureRandom() : base(0)
{
Provider.Service service = findService();
if (service == null)
{
this.provider = null;
this.secureRandomSpi = new SHA1PRNG_SecureRandomImpl();
this.algorithm = "SHA1PRNG"; //$NON-NLS-1$
}
else
{
try {
this.provider = service.getProvider();
this.secureRandomSpi = (SecureRandomSpi)service.newInstance(null);
this.algorithm = service.getAlgorithm();
} catch (java.lang.Exception e) {
throw new RuntimeException(e);
}
}
}
/*
* Get the service of the specified type
*
*/
internal Provider.Service getService(String type)
{
lock (this)
{
updatePropertyServiceTable();
if (lastServicesByType != null && type.equals(lastType))
{
return(lastServicesByType);
}
Provider.Service service;
for (java.util.Iterator <Service> it = getServices().iterator(); it.hasNext();)
{
service = it.next();
if (type.equals(service.type))
{
lastType = type;
lastServicesByType = service;
return(service);
}
}
return(null);
}
}
// Update provider Services if the properties was changed
private void updatePropertyServiceTable()
{
Object _key;
Object _value;
Provider.Service s;
String serviceName;
String algorithm;
if (changedProperties == null || changedProperties.isEmpty())
{
return;
}
java.util.Iterator<java.util.MapNS.Entry<String, String>> it = changedProperties.entrySet().iterator();
for (; it.hasNext(); )
{
java.util.MapNS.Entry<String, String> entry = it.next();
_key = entry.getKey();
_value = entry.getValue();
if (_key == null || _value == null || !(_key is String)
|| !(_value is String))
{
continue;
}
String key = (String)_key;
String value = (String)_value;
if (key.startsWith("Provider"))
{ // Provider service type is reserved //$NON-NLS-1$
continue;
}
int i;
if (key.startsWith("Alg.Alias."))
{ // Alg.Alias.<crypto_service>.<aliasName>=<stanbdardName> //$NON-NLS-1$
String aliasName;
String service_alias = key.substring(10);
i = service_alias.indexOf('.');
serviceName = service_alias.substring(0, i);
aliasName = service_alias.substring(i + 1);
algorithm = value;
String algUp = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap<String, String, Service>(128);
}
else
{
o = propertyServiceTable.get(serviceName, algUp);
}
if (o != null)
{
s = (Provider.Service)o;
s.aliases.add(aliasName);
if (propertyAliasTable == null)
{
propertyAliasTable = new TwoKeyHashMap<String, String, Service>(256);
}
propertyAliasTable.put(serviceName,
aliasName.toUpperCase(), s);
}
else
{
String className = (String)changedProperties
.get(serviceName + "." + algorithm); //$NON-NLS-1$
if (className != null)
{
java.util.ArrayList<String> l = new java.util.ArrayList<String>();
l.add(aliasName);
s = new Provider.Service(this, serviceName, algorithm,
className, l, new java.util.HashMap<String, String>());
propertyServiceTable.put(serviceName, algUp, s);
if (propertyAliasTable == null)
{
propertyAliasTable = new TwoKeyHashMap<String, String, Service>(256);
}
propertyAliasTable.put(serviceName, aliasName
.toUpperCase(), s);
}
}
continue;
}
int j = key.indexOf('.');
if (j == -1)
{ // unknown format
continue;
}
i = key.indexOf(' ');
if (i == -1)
{ // <crypto_service>.<algorithm_or_type>=<className>
serviceName = key.substring(0, j);
algorithm = key.substring(j + 1);
String alg = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable != null)
{
o = propertyServiceTable.get(serviceName, alg);
}
if (o != null)
{
s = (Provider.Service)o;
s.className = value;
}
else
{
s = new Provider.Service(this, serviceName, algorithm,
value, new java.util.ArrayList<String>(), new java.util.HashMap<String, String>());
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap<String, String, Service>(128);
}
propertyServiceTable.put(serviceName, alg, s);
}
}
else
{ // <crypto_service>.<algorithm_or_type>
// <attribute_name>=<attrValue>
serviceName = key.substring(0, j);
algorithm = key.substring(j + 1, i);
String attribute = key.substring(i + 1);
String alg = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable != null)
{
o = propertyServiceTable.get(serviceName, alg);
}
if (o != null)
{
s = (Provider.Service)o;
s.attributes.put(attribute, value);
}
else
{
String className = (String)changedProperties
.get(serviceName + "." + algorithm); //$NON-NLS-1$
if (className != null)
{
java.util.HashMap<String, String> m = new java.util.HashMap<String, String>();
m.put(attribute, value);
s = new Provider.Service(this, serviceName, algorithm,
className, new java.util.ArrayList<String>(), m);
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap<String, String, Service>(128);
}
propertyServiceTable.put(serviceName, alg, s);
}
}
}
}
servicesChanged();
changedProperties.clear();
}
private void servicesChanged()
{
lastServicesByType = null;
lastServiceName = null;
lastServicesSet = null;
}
/**
* Get the service of the specified type
*
*/
internal Provider.Service getService(String type)
{
lock (this)
{
updatePropertyServiceTable();
if (lastServicesByType != null && type.equals(lastType))
{
return lastServicesByType;
}
Provider.Service service;
for (java.util.Iterator<Service> it = getServices().iterator(); it.hasNext(); )
{
service = it.next();
if (type.equals(service.type))
{
lastType = type;
lastServicesByType = service;
return service;
}
}
return null;
}
}
/**
* Returns the service with the specified {@code type} implementing the
* specified {@code algorithm}, or {@code null} if no such implementation
* exists.
* <p/>
* If two services match the requested type and algorithm, the one added
* with the {@link #putService(Service)} is returned (as opposed to the one
* added via {@link #put(Object, Object)}.
*
* @param type
* the type of the service (for example {@code KeyPairGenerator})
* @param algorithm
* the algorithm name (case insensitive)
* @return the requested service, or {@code null} if no such implementation
* exists
*/
public Provider.Service getService(String type,
String algorithm)
{
lock (this)
{
if (type == null || algorithm == null)
{
throw new java.lang.NullPointerException();
}
if (type.equals(lastServiceName)
&& algorithm.equalsIgnoreCase(lastAlgorithm))
{
return returnedService;
}
String alg = algorithm.toUpperCase();
Object o = null;
if (serviceTable != null)
{
o = serviceTable.get(type, alg);
}
if (o == null && aliasTable != null)
{
o = aliasTable.get(type, alg);
}
if (o == null)
{
updatePropertyServiceTable();
}
if (o == null && propertyServiceTable != null)
{
o = propertyServiceTable.get(type, alg);
}
if (o == null && propertyAliasTable != null)
{
o = propertyAliasTable.get(type, alg);
}
if (o != null)
{
lastServiceName = type;
lastAlgorithm = algorithm;
returnedService = (Provider.Service)o;
return returnedService;
}
return null;
}
}
private void servicesChanged()
{
lastServicesByType = null;
lastServiceName = null;
lastServicesSet = null;
}
// Update provider Services if the properties was changed
private void updatePropertyServiceTable()
{
Object _key;
Object _value;
Provider.Service s;
String serviceName;
String algorithm;
if (changedProperties == null || changedProperties.isEmpty())
{
return;
}
java.util.Iterator <java.util.MapNS.Entry <String, String> > it = changedProperties.entrySet().iterator();
for (; it.hasNext();)
{
java.util.MapNS.Entry <String, String> entry = it.next();
_key = entry.getKey();
_value = entry.getValue();
if (_key == null || _value == null || !(_key is String) ||
!(_value is String))
{
continue;
}
String key = (String)_key;
String value = (String)_value;
if (key.startsWith("Provider"))
{ // Provider service type is reserved //$NON-NLS-1$
continue;
}
int i;
if (key.startsWith("Alg.Alias."))
{ // Alg.Alias.<crypto_service>.<aliasName>=<stanbdardName> //$NON-NLS-1$
String aliasName;
String service_alias = key.substring(10);
i = service_alias.indexOf('.');
serviceName = service_alias.substring(0, i);
aliasName = service_alias.substring(i + 1);
algorithm = value;
String algUp = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap <String, String, Service>(128);
}
else
{
o = propertyServiceTable.get(serviceName, algUp);
}
if (o != null)
{
s = (Provider.Service)o;
s.aliases.add(aliasName);
if (propertyAliasTable == null)
{
propertyAliasTable = new TwoKeyHashMap <String, String, Service>(256);
}
propertyAliasTable.put(serviceName,
aliasName.toUpperCase(), s);
}
else
{
String className = (String)changedProperties
.get(serviceName + "." + algorithm); //$NON-NLS-1$
if (className != null)
{
java.util.ArrayList <String> l = new java.util.ArrayList <String>();
l.add(aliasName);
s = new Provider.Service(this, serviceName, algorithm,
className, l, new java.util.HashMap <String, String>());
propertyServiceTable.put(serviceName, algUp, s);
if (propertyAliasTable == null)
{
propertyAliasTable = new TwoKeyHashMap <String, String, Service>(256);
}
propertyAliasTable.put(serviceName, aliasName
.toUpperCase(), s);
}
}
continue;
}
int j = key.indexOf('.');
if (j == -1)
{ // unknown format
continue;
}
i = key.indexOf(' ');
if (i == -1)
{ // <crypto_service>.<algorithm_or_type>=<className>
serviceName = key.substring(0, j);
algorithm = key.substring(j + 1);
String alg = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable != null)
{
o = propertyServiceTable.get(serviceName, alg);
}
if (o != null)
{
s = (Provider.Service)o;
s.className = value;
}
else
{
s = new Provider.Service(this, serviceName, algorithm,
value, new java.util.ArrayList <String>(), new java.util.HashMap <String, String>());
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap <String, String, Service>(128);
}
propertyServiceTable.put(serviceName, alg, s);
}
}
else
{ // <crypto_service>.<algorithm_or_type>
// <attribute_name>=<attrValue>
serviceName = key.substring(0, j);
algorithm = key.substring(j + 1, i);
String attribute = key.substring(i + 1);
String alg = algorithm.toUpperCase();
Object o = null;
if (propertyServiceTable != null)
{
o = propertyServiceTable.get(serviceName, alg);
}
if (o != null)
{
s = (Provider.Service)o;
s.attributes.put(attribute, value);
}
else
{
String className = (String)changedProperties
.get(serviceName + "." + algorithm); //$NON-NLS-1$
if (className != null)
{
java.util.HashMap <String, String> m = new java.util.HashMap <String, String>();
m.put(attribute, value);
s = new Provider.Service(this, serviceName, algorithm,
className, new java.util.ArrayList <String>(), m);
if (propertyServiceTable == null)
{
propertyServiceTable = new TwoKeyHashMap <String, String, Service>(128);
}
propertyServiceTable.put(serviceName, alg, s);
}
}
}
}
servicesChanged();
changedProperties.clear();
}
// Access to Security.getAliases()
public java.util.Iterator <String> getAliases(Provider.Service s)
{
return(s.getAliases());
}