/* ObjectInputStream.java -- Class used to read serialized objects
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GNU Classpath.
}
/**
+ * This method makes a partial check of types for the fields
+ * contained given in arguments. It checks primitive types of
+ * fields1 against non primitive types of fields2. This method
+ * assumes the two lists has already been sorted according to
+ * the Java specification.
+ *
+ * @param name Name of the class owning the given fields.
+ * @param fields1 First list to check.
+ * @param fields2 Second list to check.
+ * @throws InvalidClassException if a field in fields1, which has a primitive type, is a present
+ * in the non primitive part in fields2.
+ */
+ private void checkTypeConsistency(String name, ObjectStreamField[] fields1, ObjectStreamField[] fields2)
+ throws InvalidClassException
+ int nonPrimitive = 0;
+
+ for (nonPrimitive = 0;
+ nonPrimitive < fields1.length
+ && fields1[nonPrimitive].isPrimitive(); nonPrimitive++)
+ {
+ }
+
+ if (nonPrimitive == fields1.length)
+ return;
+
+ int i = 0;
+ ObjectStreamField f1;
+ ObjectStreamField f2;
+
+ while (i < fields2.length
+ && nonPrimitive < fields1.length)
+ {
+ f1 = fields1[nonPrimitive];
+ f2 = fields2[i];
+
+ if (!f2.isPrimitive())
+ break;
+
+ int compVal = f1.getName().compareTo (f2.getName());
+
+ if (compVal < 0)
+ {
+ nonPrimitive++;
+ }
+ else if (compVal > 0)
+ {
+ i++;
+ }
+ else
+ {
+ throw new InvalidClassException
+ ("invalid field type for " + f2.getName() +
+ " in class " + name);
+ }
+ }
+ }
+
+ /**
* This method reads a class descriptor from the real input stream
* and use these data to create a new instance of ObjectStreamClass.
* Fields are sorted and ordered for the real read which occurs for
int real_idx = 0;
int map_idx = 0;
+ /*
+ * Check that there is no type inconsistencies between the lists.
+ * A special checking must be done for the two groups: primitive types and
+ * not primitive types.
+ */
+ checkTypeConsistency(name, real_fields, stream_fields);
+ checkTypeConsistency(name, stream_fields, real_fields);
+
+
while (stream_idx < stream_fields.length
|| real_idx < real_fields.length)
{
else
{
int comp_val =
- real_fields[real_idx].compareTo (stream_fields[stream_idx]);
+ real_fields[real_idx].compareTo (stream_fields[stream_idx]);
if (comp_val < 0)
{
{
stream_field = stream_fields[stream_idx++];
real_field = real_fields[real_idx++];
- if(stream_field.getType() != real_field.getType())
- throw new InvalidClassException
- ("invalid field type for " + real_field.getName() +
- " in class " + name);
+ if (stream_field.getType() != real_field.getType())
+ throw new InvalidClassException
+ ("invalid field type for " + real_field.getName() +
+ " in class " + name);
}
}
- if (stream_field != null)
- {
- if (stream_field.getOffset() < 0)
- stream_field = null;
- else if (!stream_field.isToSet())
- real_field = null;
- }
- if (real_field != null && !real_field.isToSet())
- real_field = null;
+
/* If some of stream_fields does not correspond to any of real_fields,
* or the opposite, then fieldmapping will go short.
*/
ObjectStreamField[] newfieldmapping =
new ObjectStreamField[fieldmapping.length + 2];
System.arraycopy(fieldmapping, 0,
- newfieldmapping, 0, fieldmapping.length);
+ newfieldmapping, 0, fieldmapping.length);
fieldmapping = newfieldmapping;
}
fieldmapping[map_idx++] = stream_field;
{
ObjectStreamField stream_field = fields[i];
ObjectStreamField real_field = fields[i + 1];
- if(stream_field != null || real_field != null)
- {
- boolean read_value = stream_field != null;
- boolean set_value = real_field != null;
- String field_name;
- char type;
- if (stream_field != null)
- {
- field_name = stream_field.getName();
- type = stream_field.getTypeCode();
- }
- else
- {
- field_name = real_field.getName();
- type = real_field.getTypeCode();
- }
+ boolean read_value = (stream_field != null && stream_field.getOffset() >= 0 && stream_field.isToSet());
+ boolean set_value = (real_field != null && real_field.isToSet());
+ String field_name;
+ char type;
- switch(type)
- {
- case 'Z':
- {
- boolean value =
- read_value ? this.realInputStream.readBoolean() : false;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setBooleanField(obj, value);
- break;
- }
- case 'B':
- {
- byte value =
- read_value ? this.realInputStream.readByte() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setByteField(obj, value);
- break;
- }
- case 'C':
- {
- char value =
- read_value ? this.realInputStream.readChar(): 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setCharField(obj, value);
- break;
- }
- case 'D':
- {
- double value =
- read_value ? this.realInputStream.readDouble() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setDoubleField(obj, value);
- break;
- }
- case 'F':
- {
- float value =
- read_value ? this.realInputStream.readFloat() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setFloatField(obj, value);
- break;
- }
- case 'I':
- {
- int value =
- read_value ? this.realInputStream.readInt() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setIntField(obj, value);
- break;
- }
- case 'J':
- {
- long value =
- read_value ? this.realInputStream.readLong() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setLongField(obj, value);
- break;
- }
- case 'S':
- {
- short value =
- read_value ? this.realInputStream.readShort() : 0;
- if (dump && read_value && set_value)
- dumpElementln(" " + field_name + ": " + value);
- if (set_value)
- real_field.setShortField(obj, value);
- break;
- }
- case 'L':
- case '[':
- {
- Object value =
- read_value ? readObject() : null;
- if (set_value)
- real_field.setObjectField(obj, value);
- break;
- }
- default:
- throw new InternalError("Invalid type code: " + type);
- }
+ if (stream_field != null)
+ {
+ field_name = stream_field.getName();
+ type = stream_field.getTypeCode();
+ }
+ else
+ {
+ field_name = real_field.getName();
+ type = real_field.getTypeCode();
+ }
+
+ switch(type)
+ {
+ case 'Z':
+ {
+ boolean value =
+ read_value ? this.realInputStream.readBoolean() : false;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setBooleanField(obj, value);
+ break;
+ }
+ case 'B':
+ {
+ byte value =
+ read_value ? this.realInputStream.readByte() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setByteField(obj, value);
+ break;
+ }
+ case 'C':
+ {
+ char value =
+ read_value ? this.realInputStream.readChar(): 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setCharField(obj, value);
+ break;
+ }
+ case 'D':
+ {
+ double value =
+ read_value ? this.realInputStream.readDouble() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setDoubleField(obj, value);
+ break;
+ }
+ case 'F':
+ {
+ float value =
+ read_value ? this.realInputStream.readFloat() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setFloatField(obj, value);
+ break;
+ }
+ case 'I':
+ {
+ int value =
+ read_value ? this.realInputStream.readInt() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setIntField(obj, value);
+ break;
+ }
+ case 'J':
+ {
+ long value =
+ read_value ? this.realInputStream.readLong() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setLongField(obj, value);
+ break;
+ }
+ case 'S':
+ {
+ short value =
+ read_value ? this.realInputStream.readShort() : 0;
+ if (dump && read_value && set_value)
+ dumpElementln(" " + field_name + ": " + value);
+ if (set_value)
+ real_field.setShortField(obj, value);
+ break;
+ }
+ case 'L':
+ case '[':
+ {
+ Object value =
+ read_value ? readObject() : null;
+ if (set_value)
+ real_field.setObjectField(obj, value);
+ break;
+ }
+ default:
+ throw new InternalError("Invalid type code: " + type);
}
}
}
-
+
// Toggles writing primitive data to block-data buffer.
private boolean setBlockDataMode (boolean on)
{
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import gnu.java.lang.reflect.TypeSignature;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
/**
* This class intends to describe the field of a class for the serialization
/**
* There are many cases you can not get java.lang.Class from typename
- * if your context class loader cann not load it, then use typename to
+ * if your context class loader cannot load it, then use typename to
* construct the field.
*
* @param name Name of the field to export.
}
/**
- * This methods returns true if the field is marked as to be
+ * This method returns true if the field is marked as to be
* set.
*
* @return True if it is to be set, false in the other cases.
return toset;
}
+ /**
+ * This method searches for its field reference in the specified class
+ * object. It requests privileges. If an error occurs the internal field
+ * reference is not modified.
+ *
+ * @throws NoSuchFieldException if the field name does not exist in this class.
+ * @throws SecurityException if there was an error requesting the privileges.
+ */
+ void lookupField(Class clazz) throws NoSuchFieldException, SecurityException
+ {
+ final Field f = clazz.getDeclaredField(name);
+
+ AccessController.doPrivileged(new PrivilegedAction()
+ {
+ public Object run()
+ {
+ f.setAccessible(true);
+ return null;
+ }
+ });
+
+ this.field = f;
+ }
+
+ /**
+ * This method check whether the field described by this
+ * instance of ObjectStreamField is compatible with the
+ * actual implementation of this field.
+ *
+ * @throws NullPointerException if this field does not exist
+ * in the real class.
+ * @throws InvalidClassException if the types are incompatible.
+ */
+ void checkFieldType() throws InvalidClassException
+ {
+ Class ftype = field.getType();
+
+ if (!ftype.isAssignableFrom(type))
+ throw new InvalidClassException
+ ("invalid field type for " + name +
+ " in class " + field.getDeclaringClass());
+ }
+
public String toString ()
{
return "ObjectStreamField< " + type + " " + name + " >";
final void setBooleanField(Object obj, boolean val)
{
- try
+ try
{
- field.setBoolean(obj, val);
+ field.setBoolean(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setByteField(Object obj, byte val)
{
- try
+ try
{
- field.setByte(obj, val);
+ field.setByte(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setCharField(Object obj, char val)
{
- try
+ try
{
- field.setChar(obj, val);
+ field.setChar(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setShortField(Object obj, short val)
{
- try
+ try
{
- field.setShort(obj, val);
+ field.setShort(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setIntField(Object obj, int val)
{
- try
+ try
{
- field.setInt(obj, val);
+ field.setInt(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setLongField(Object obj, long val)
{
- try
+ try
{
- field.setLong(obj, val);
+ field.setLong(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setFloatField(Object obj, float val)
{
- try
+ try
{
- field.setFloat(obj, val);
+ field.setFloat(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setDoubleField(Object obj, double val)
{
- try
+ try
{
- field.setDouble(obj, val);
+ field.setDouble(obj, val);
}
- catch(IllegalAccessException x)
+ catch(IllegalAccessException x)
{
- throw new InternalError(x.getMessage());
+ throw new InternalError(x.getMessage());
}
}
-
+
final void setObjectField(Object obj, Object val)
- {
+ {
try
{
field.set(obj, val);
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