#include <string.h>
__BEGIN_DECLS
#include <vm/vm_kern.h>
__END_DECLS
#include <libkern/c++/OSData.h>
#include <libkern/c++/OSSerialize.h>
#include <libkern/c++/OSLib.h>
#include <libkern/c++/OSString.h>
#include <IOKit/IOLib.h>
#define super OSObject
OSDefineMetaClassAndStructors(OSData, OSObject)
OSMetaClassDefineReservedUsed(OSData, 0); OSMetaClassDefineReservedUnused(OSData, 1);
OSMetaClassDefineReservedUnused(OSData, 2);
OSMetaClassDefineReservedUnused(OSData, 3);
OSMetaClassDefineReservedUnused(OSData, 4);
OSMetaClassDefineReservedUnused(OSData, 5);
OSMetaClassDefineReservedUnused(OSData, 6);
OSMetaClassDefineReservedUnused(OSData, 7);
#define EXTERNAL ((unsigned int) -1)
bool OSData::initWithCapacity(unsigned int inCapacity)
{
if (data)
{
OSCONTAINER_ACCUMSIZE(-((size_t)capacity));
if (!inCapacity || (capacity < inCapacity))
{
if (capacity < page_size) kfree(data, capacity);
else kmem_free(kernel_map, (vm_offset_t)data, capacity);
data = 0;
capacity = 0;
}
}
if (!super::init())
return false;
if (inCapacity && !data) {
if (inCapacity < page_size) data = (void *) kalloc_container(inCapacity);
else {
kern_return_t kr;
inCapacity = round_page_32(inCapacity);
kr = kmem_alloc(kernel_map, (vm_offset_t *)&data, inCapacity, IOMemoryTag(kernel_map));
if (KERN_SUCCESS != kr) data = NULL;
}
if (!data)
return false;
capacity = inCapacity;
}
OSCONTAINER_ACCUMSIZE(capacity);
length = 0;
if (inCapacity < 16)
capacityIncrement = 16;
else
capacityIncrement = inCapacity;
return true;
}
bool OSData::initWithBytes(const void *bytes, unsigned int inLength)
{
if ((inLength && !bytes) || !initWithCapacity(inLength))
return false;
if (bytes != data)
bcopy(bytes, data, inLength);
length = inLength;
return true;
}
bool OSData::initWithBytesNoCopy(void *bytes, unsigned int inLength)
{
if (!super::init())
return false;
length = inLength;
capacity = EXTERNAL;
data = bytes;
return true;
}
bool OSData::initWithData(const OSData *inData)
{
return initWithBytes(inData->data, inData->length);
}
bool OSData::initWithData(const OSData *inData,
unsigned int start, unsigned int inLength)
{
const void *localData = inData->getBytesNoCopy(start, inLength);
if (localData)
return initWithBytes(localData, inLength);
else
return false;
}
OSData *OSData::withCapacity(unsigned int inCapacity)
{
OSData *me = new OSData;
if (me && !me->initWithCapacity(inCapacity)) {
me->release();
return 0;
}
return me;
}
OSData *OSData::withBytes(const void *bytes, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithBytes(bytes, inLength)) {
me->release();
return 0;
}
return me;
}
OSData *OSData::withBytesNoCopy(void *bytes, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithBytesNoCopy(bytes, inLength)) {
me->release();
return 0;
}
return me;
}
OSData *OSData::withData(const OSData *inData)
{
OSData *me = new OSData;
if (me && !me->initWithData(inData)) {
me->release();
return 0;
}
return me;
}
OSData *OSData::withData(const OSData *inData,
unsigned int start, unsigned int inLength)
{
OSData *me = new OSData;
if (me && !me->initWithData(inData, start, inLength)) {
me->release();
return 0;
}
return me;
}
void OSData::free()
{
if ((capacity != EXTERNAL) && data && capacity) {
if (capacity < page_size) kfree(data, capacity);
else kmem_free(kernel_map, (vm_offset_t)data, capacity);
OSCONTAINER_ACCUMSIZE( -((size_t)capacity) );
} else if (capacity == EXTERNAL) {
DeallocFunction freemem = reserved ? reserved->deallocFunction : NULL;
if (freemem && data && length) {
freemem(data, length);
}
}
if (reserved) kfree(reserved, sizeof(ExpansionData));
super::free();
}
unsigned int OSData::getLength() const { return length; }
unsigned int OSData::getCapacity() const { return capacity; }
unsigned int OSData::getCapacityIncrement() const
{
return capacityIncrement;
}
unsigned int OSData::setCapacityIncrement(unsigned increment)
{
return capacityIncrement = increment;
}
unsigned int OSData::ensureCapacity(unsigned int newCapacity)
{
unsigned char * newData;
unsigned int finalCapacity;
void * copydata;
kern_return_t kr;
if (newCapacity <= capacity)
return capacity;
finalCapacity = (((newCapacity - 1) / capacityIncrement) + 1)
* capacityIncrement;
if (finalCapacity < newCapacity) return capacity;
copydata = data;
if (finalCapacity >= page_size) {
finalCapacity = round_page_32(finalCapacity);
if (finalCapacity < newCapacity) return capacity;
if (capacity >= page_size) {
copydata = NULL;
kr = kmem_realloc(kernel_map,
(vm_offset_t)data,
capacity,
(vm_offset_t *)&newData,
finalCapacity,
IOMemoryTag(kernel_map));
} else {
kr = kmem_alloc(kernel_map, (vm_offset_t *)&newData, finalCapacity, IOMemoryTag(kernel_map));
}
if (KERN_SUCCESS != kr) newData = NULL;
}
else newData = (unsigned char *) kalloc_container(finalCapacity);
if ( newData ) {
bzero(newData + capacity, finalCapacity - capacity);
if (copydata) bcopy(copydata, newData, capacity);
if (data) {
if (capacity < page_size) kfree(data, capacity);
else kmem_free(kernel_map, (vm_offset_t)data, capacity);
}
OSCONTAINER_ACCUMSIZE( ((size_t)finalCapacity) - ((size_t)capacity) );
data = (void *) newData;
capacity = finalCapacity;
}
return capacity;
}
bool OSData::appendBytes(const void *bytes, unsigned int inLength)
{
unsigned int newSize;
if (!inLength)
return true;
if (capacity == EXTERNAL)
return false;
newSize = length + inLength;
if ( (newSize > capacity) && newSize > ensureCapacity(newSize) )
return false;
if (bytes)
bcopy(bytes, &((unsigned char *)data)[length], inLength);
else
bzero(&((unsigned char *)data)[length], inLength);
length = newSize;
return true;
}
bool OSData::appendByte(unsigned char byte, unsigned int inLength)
{
unsigned int newSize;
if (!inLength)
return true;
if (capacity == EXTERNAL)
return false;
newSize = length + inLength;
if ( (newSize > capacity) && newSize > ensureCapacity(newSize) )
return false;
memset(&((unsigned char *)data)[length], byte, inLength);
length = newSize;
return true;
}
bool OSData::appendBytes(const OSData *other)
{
return appendBytes(other->data, other->length);
}
const void *OSData::getBytesNoCopy() const
{
if (!length)
return 0;
else
return data;
}
const void *OSData::getBytesNoCopy(unsigned int start,
unsigned int inLength) const
{
const void *outData = 0;
if (length
&& start < length
&& (start + inLength) >= inLength && (start + inLength) <= length)
outData = (const void *) ((char *) data + start);
return outData;
}
bool OSData::isEqualTo(const OSData *aData) const
{
unsigned int len;
len = aData->length;
if ( length != len )
return false;
return isEqualTo(aData->data, len);
}
bool OSData::isEqualTo(const void *someData, unsigned int inLength) const
{
return (length >= inLength) && (bcmp(data, someData, inLength) == 0);
}
bool OSData::isEqualTo(const OSMetaClassBase *obj) const
{
OSData * otherData;
OSString * str;
if ((otherData = OSDynamicCast(OSData, obj)))
return isEqualTo(otherData);
else if ((str = OSDynamicCast (OSString, obj)))
return isEqualTo(str);
else
return false;
}
bool OSData::isEqualTo(const OSString *obj) const
{
const char * aCString;
char * dataPtr;
unsigned int checkLen = length;
unsigned int stringLen;
if (!obj)
return false;
stringLen = obj->getLength ();
dataPtr = (char *)data;
if (stringLen != checkLen) {
if ( (checkLen - stringLen) == 1) {
if (dataPtr[checkLen-1] != 0) return false;
checkLen--;
}
else
return false;
}
aCString = obj->getCStringNoCopy ();
for ( unsigned int i=0; i < checkLen; i++ ) {
if ( *dataPtr++ != aCString[i] )
return false;
}
return true;
}
static const char __CFPLDataEncodeTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
bool OSData::serialize(OSSerialize *s) const
{
unsigned int i;
const unsigned char *p;
unsigned char c;
unsigned int serializeLength;
if (s->previouslySerialized(this)) return true;
if (!s->addXMLStartTag(this, "data")) return false;
serializeLength = length;
if (reserved && reserved->disableSerialization) serializeLength = 0;
for (i = 0, p = (unsigned char *)data; i < serializeLength; i++, p++) {
switch (i % 3) {
case 0:
c = __CFPLDataEncodeTable [ ((p[0] >> 2) & 0x3f)];
if (!s->addChar(c)) return false;
break;
case 1:
c = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 4) & 0x3f)];
if (!s->addChar(c)) return false;
break;
case 2:
c = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 6) & 0x3f)];
if (!s->addChar(c)) return false;
c = __CFPLDataEncodeTable [ (p[0] & 0x3f)];
if (!s->addChar(c)) return false;
break;
}
}
switch (i % 3) {
case 0:
break;
case 1:
c = __CFPLDataEncodeTable [ ((p[-1] << 4) & 0x30)];
if (!s->addChar(c)) return false;
if (!s->addChar('=')) return false;
if (!s->addChar('=')) return false;
break;
case 2:
c = __CFPLDataEncodeTable [ ((p[-1] << 2) & 0x3c)];
if (!s->addChar(c)) return false;
if (!s->addChar('=')) return false;
break;
}
return s->addXMLEndTag("data");
}
void OSData::setDeallocFunction(DeallocFunction func)
{
if (!reserved)
{
reserved = (typeof(reserved)) kalloc_container(sizeof(ExpansionData));
if (!reserved) return;
bzero(reserved, sizeof(ExpansionData));
}
reserved->deallocFunction = func;
}
void OSData::setSerializable(bool serializable)
{
if (!reserved)
{
reserved = (typeof(reserved)) kalloc_container(sizeof(ExpansionData));
if (!reserved) return;
bzero(reserved, sizeof(ExpansionData));
}
reserved->disableSerialization = (!serializable);
}
bool OSData::isSerializable(void)
{
return (!reserved || !reserved->disableSerialization);
}