CFBinaryPList.c

/*
 * Copyright (c) 2008-2012 Brent Fulgham <bfulgham@gmail.org>. All rights reserved.
 * Copyright (c) 2009 Stuart Crook <stuart@echus.demon.co.uk>. All rights reserved.
 *
 * This source code is a modified version of the CoreFoundation sources released by Apple Inc. under
 * the terms of the APSL version 2.0 (see below).
 *
 * For information about changes from the original Apple source release can be found by reviewing the
 * source control system for the project at https://sourceforge.net/svn/?group_id=246198.
 *
 * The original license information is as follows:
 * 
 * Copyright (c) 2012 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/* CFBinaryPList.c
 Copyright (c) 2000-2011, Apple Inc. All rights reserved.
 Responsibility: Tony Parker
*/


#include<CoreFoundation/CFString.h>
#include<CoreFoundation/CFNumber.h>
#include<CoreFoundation/CFDate.h>
#include<CoreFoundation/CFData.h>
#include<CoreFoundation/CFError.h>
#include<CoreFoundation/CFArray.h>
#include<CoreFoundation/CFDictionary.h>
#include<CoreFoundation/CFSet.h>
#include<CoreFoundation/CFPropertyList.h>
#include<CoreFoundation/CFByteOrder.h>
#include<CoreFoundation/CFRuntime.h>
#include<stdio.h>
#include<limits.h>
#include<string.h>
#include<CoreFoundation/CoreFoundation_Prefix.h>
#include"CFInternal.h"
#ifDEPLOYMENT_TARGET_MACOSX||DEPLOYMENT_TARGET_EMBEDDED||DEPLOYMENT_TARGET_WINDOWS||DEPLOYMENT_TARGET_LINUX||DEPLOYMENT_TARGET_FREEBSD
#include<CoreFoundation/CFStream.h>
#endif

typedefstruct {
int64_thigh;
uint64_tlow;
} CFSInt128Struct;

enum {
kCFNumberSInt128Type=17
};

CF_EXPORTCFNumberType_CFNumberGetType2(CFNumberRefnumber);
__private_extern__CFErrorRef__CFPropertyListCreateError(CFIndexcode, CFStringRefdebugString, ...);

enum {
CF_NO_ERROR=0,
CF_OVERFLOW_ERROR= (1 << 0),
};

CF_INLINEuint32_t__check_uint32_add_unsigned_unsigned(uint32_tx, uint32_ty, int32_t*err) {
if((UINT_MAX-y) <x)
*err=*err | CF_OVERFLOW_ERROR;
returnx+y;
};

CF_INLINEuint64_t__check_uint64_add_unsigned_unsigned(uint64_tx, uint64_ty, int32_t*err) {
if((ULLONG_MAX-y) <x)
*err=*err | CF_OVERFLOW_ERROR;
returnx+y;
};

CF_INLINEuint32_t__check_uint32_mul_unsigned_unsigned(uint32_tx, uint32_ty, int32_t*err) {
uint64_ttmp= (uint64_t) x* (uint64_t) y;
/* If any of the upper 32 bits touched, overflow */
if(tmp&0xffffffff00000000ULL)
*err=*err | CF_OVERFLOW_ERROR;
return (uint32_t) tmp;
};

CF_INLINEuint64_t__check_uint64_mul_unsigned_unsigned(uint64_tx, uint64_ty, int32_t*err) {
if(x==0) return0;
if(ULLONG_MAX/x<y)
*err=*err | CF_OVERFLOW_ERROR;
returnx*y;
};

#if__LP64__
#definecheck_ptr_add(p, a, err) (const uint8_t *)__check_uint64_add_unsigned_unsigned((uintptr_t)p, (uintptr_t)a, err)
#definecheck_size_t_mul(b, a, err) (size_t)__check_uint64_mul_unsigned_unsigned((size_t)b, (size_t)a, err)
#else
#definecheck_ptr_add(p, a, err) (const uint8_t *)__check_uint32_add_unsigned_unsigned((uintptr_t)p, (uintptr_t)a, err)
#definecheck_size_t_mul(b, a, err) (size_t)__check_uint32_mul_unsigned_unsigned((size_t)b, (size_t)a, err)
#endif


struct__CFKeyedArchiverUID {
CFRuntimeBase_base;
uint32_t_value;
};

staticCFStringRef__CFKeyedArchiverUIDCopyDescription(CFTypeRefcf) {
CFKeyedArchiverUIDRefuid= (CFKeyedArchiverUIDRef)cf;
returnCFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("<CFKeyedArchiverUID %p [%p]>{value = %u}"), cf, CFGetAllocator(cf), uid->_value);
}

staticCFStringRef__CFKeyedArchiverUIDCopyFormattingDescription(CFTypeRefcf, CFDictionaryRefformatOptions) {
CFKeyedArchiverUIDRefuid= (CFKeyedArchiverUIDRef)cf;
returnCFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("@%u@"), uid->_value);
}

staticCFTypeID__kCFKeyedArchiverUIDTypeID=_kCFRuntimeNotATypeID;

staticconstCFRuntimeClass__CFKeyedArchiverUIDClass= {
0,
"CFKeyedArchiverUID",
NULL, // init
NULL, // copy
NULL, // finalize
NULL, // equal -- pointer equality only
NULL, // hash -- pointer hashing only
__CFKeyedArchiverUIDCopyFormattingDescription,
__CFKeyedArchiverUIDCopyDescription
};

__private_extern__void__CFKeyedArchiverUIDInitialize(void) {
__kCFKeyedArchiverUIDTypeID=_CFRuntimeRegisterClass(&__CFKeyedArchiverUIDClass);
}

CFTypeID_CFKeyedArchiverUIDGetTypeID(void) {
return__kCFKeyedArchiverUIDTypeID;
}

CFKeyedArchiverUIDRef_CFKeyedArchiverUIDCreate(CFAllocatorRefallocator, uint32_tvalue) {
CFKeyedArchiverUIDRefuid;
uid= (CFKeyedArchiverUIDRef)_CFRuntimeCreateInstance(allocator, __kCFKeyedArchiverUIDTypeID, sizeof(struct__CFKeyedArchiverUID) -sizeof(CFRuntimeBase), NULL);
if (NULL==uid) {
returnNULL;
 }
 ((struct__CFKeyedArchiverUID*)uid)->_value=value;
returnuid;
}


uint32_t_CFKeyedArchiverUIDGetValue(CFKeyedArchiverUIDRefuid) {
returnuid->_value;
}


typedefstruct {
CFTypeRefstream;
CFErrorReferror;
uint64_twritten;
int32_tused;
boolstreamIsData;
uint8_tbuffer[8192-32];
} __CFBinaryPlistWriteBuffer;

staticvoidwriteBytes(__CFBinaryPlistWriteBuffer*buf, constUInt8*bytes, CFIndexlength) {
if (0==length) return;
if (buf->error) return;
if (buf->streamIsData) {
CFDataAppendBytes((CFMutableDataRef)buf->stream, bytes, length);
buf->written+=length;
 } else {
#ifDEPLOYMENT_TARGET_MACOSX||DEPLOYMENT_TARGET_EMBEDDED||DEPLOYMENT_TARGET_WINDOWS||DEPLOYMENT_TARGET_LINUX||DEPLOYMENT_TARGET_FREEBSD
while (0<length) {
CFIndexret=CFWriteStreamWrite((CFWriteStreamRef)buf->stream, bytes, length);
if (ret==0) {
buf->error=__CFPropertyListCreateError(kCFPropertyListWriteStreamError, CFSTR("Binary property list writing could not be completed because stream is full."));
return;
 }
if (ret<0) {
CFErrorReferr=CFWriteStreamCopyError((CFWriteStreamRef)buf->stream);
buf->error=err ? err : __CFPropertyListCreateError(kCFPropertyListWriteStreamError, CFSTR("Binary property list writing could not be completed because the stream had an unknown error."));
return;
 }
buf->written+=ret;
length-=ret;
bytes+=ret;
 }
#else
CFAssert(false, __kCFLogAssertion, "Streams are not supported on this platform");
#endif
 }
}

staticvoidbufferWrite(__CFBinaryPlistWriteBuffer*buf, constuint8_t*buffer, CFIndexcount) {
if (0==count) return;
if ((CFIndex)sizeof(buf->buffer) <= count) {
writeBytes(buf, buf->buffer, buf->used);
buf->used=0;
writeBytes(buf, buffer, count);
return;
 }
CFIndexcopyLen=__CFMin(count, (CFIndex)sizeof(buf->buffer) -buf->used);
memmove(buf->buffer+buf->used, buffer, copyLen);
buf->used+=copyLen;
if (sizeof(buf->buffer) ==buf->used) {
writeBytes(buf, buf->buffer, sizeof(buf->buffer));
memmove(buf->buffer, buffer+copyLen, count-copyLen);
buf->used=count-copyLen;
 }
}

staticvoidbufferFlush(__CFBinaryPlistWriteBuffer*buf) {
writeBytes(buf, buf->buffer, buf->used);
buf->used=0;
}

/*
HEADER
 magic number ("bplist")
 file format version

OBJECT TABLE
 variable-sized objects

 Object Formats (marker byte followed by additional info in some cases)
 null 0000 0000
 bool 0000 1000 // false
 bool 0000 1001 // true
 fill 0000 1111 // fill byte
 int 0001 nnnn ... // # of bytes is 2^nnnn, big-endian bytes
 real 0010 nnnn ... // # of bytes is 2^nnnn, big-endian bytes
 date 0011 0011 ... // 8 byte float follows, big-endian bytes
 data 0100 nnnn [int] ... // nnnn is number of bytes unless 1111 then int count follows, followed by bytes
 string 0101 nnnn [int] ... // ASCII string, nnnn is # of chars, else 1111 then int count, then bytes
 string 0110 nnnn [int] ... // Unicode string, nnnn is # of chars, else 1111 then int count, then big-endian 2-byte uint16_t
 0111 xxxx // unused
 uid 1000 nnnn ... // nnnn+1 is # of bytes
 1001 xxxx // unused
 array 1010 nnnn [int] objref* // nnnn is count, unless '1111', then int count follows
 1011 xxxx // unused
 set 1100 nnnn [int] objref* // nnnn is count, unless '1111', then int count follows
 dict 1101 nnnn [int] keyref* objref* // nnnn is count, unless '1111', then int count follows
 1110 xxxx // unused
 1111 xxxx // unused

OFFSET TABLE
 list of ints, byte size of which is given in trailer
 -- these are the byte offsets into the file
 -- number of these is in the trailer

TRAILER
 byte size of offset ints in offset table
 byte size of object refs in arrays and dicts
 number of offsets in offset table (also is number of objects)
 element # in offset table which is top level object
 offset table offset

*/


staticCFTypeIDstringtype=-1, datatype=-1, numbertype=-1, datetype=-1;
staticCFTypeIDbooltype=-1, nulltype=-1, dicttype=-1, arraytype=-1, settype=-1;

staticvoidinitStatics() {
if ((CFTypeID)-1==stringtype) {
stringtype=CFStringGetTypeID();
 }
if ((CFTypeID)-1==datatype) {
datatype=CFDataGetTypeID();
 }
if ((CFTypeID)-1==numbertype) {
numbertype=CFNumberGetTypeID();
 }
if ((CFTypeID)-1==booltype) {
booltype=CFBooleanGetTypeID();
 }
if ((CFTypeID)-1==datetype) {
datetype=CFDateGetTypeID();
 }
if ((CFTypeID)-1==dicttype) {
dicttype=CFDictionaryGetTypeID();
 }
if ((CFTypeID)-1==arraytype) {
arraytype=CFArrayGetTypeID();
 }
if ((CFTypeID)-1==settype) {
settype=CFSetGetTypeID();
 }
if ((CFTypeID)-1==nulltype) {
nulltype=CFNullGetTypeID();
 }
}

staticvoid_appendInt(__CFBinaryPlistWriteBuffer*buf, uint64_tbigint) {
uint8_tmarker;
uint8_t*bytes;
CFIndexnbytes;
if (bigint <= (uint64_t)0xff) {
nbytes=1;
marker=kCFBinaryPlistMarkerInt | 0;
 } elseif (bigint <= (uint64_t)0xffff) {
nbytes=2;
marker=kCFBinaryPlistMarkerInt | 1;
 } elseif (bigint <= (uint64_t)0xffffffff) {
nbytes=4;
marker=kCFBinaryPlistMarkerInt | 2;
 } else {
nbytes=8;
marker=kCFBinaryPlistMarkerInt | 3;
 }
bigint=CFSwapInt64HostToBig(bigint);
bytes= (uint8_t*)&bigint+sizeof(bigint) -nbytes;
bufferWrite(buf, &marker, 1);
bufferWrite(buf, bytes, nbytes);
}

staticvoid_appendUID(__CFBinaryPlistWriteBuffer*buf, CFKeyedArchiverUIDRefuid) {
uint8_tmarker;
uint8_t*bytes;
CFIndexnbytes;
uint64_tbigint=_CFKeyedArchiverUIDGetValue(uid);
if (bigint <= (uint64_t)0xff) {
nbytes=1;
 } elseif (bigint <= (uint64_t)0xffff) {
nbytes=2;
 } elseif (bigint <= (uint64_t)0xffffffff) {
nbytes=4;
 } else {
nbytes=8;
 }
marker=kCFBinaryPlistMarkerUID | (uint8_t)(nbytes-1);
bigint=CFSwapInt64HostToBig(bigint);
bytes= (uint8_t*)&bigint+sizeof(bigint) -nbytes;
bufferWrite(buf, &marker, 1);
bufferWrite(buf, bytes, nbytes);
}

staticvoid_flattenPlist(CFPropertyListRefplist, CFMutableArrayRefobjlist, CFMutableDictionaryRefobjtable, CFMutableSetRefuniquingset) {
CFPropertyListRefunique;
uint32_trefnum;
CFTypeIDtype=CFGetTypeID(plist);
CFIndexidx;
CFPropertyListRef*list, buffer[256];

// Do not unique dictionaries or arrays, because: they
// are slow to compare, and have poor hash codes.
// Uniquing bools is unnecessary.
if (stringtype==type||numbertype==type||datetype==type||datatype==type) {
CFIndexbefore=CFSetGetCount(uniquingset);
CFSetAddValue(uniquingset, plist);
CFIndexafter=CFSetGetCount(uniquingset);
if (after==before) { // already in set
unique=CFSetGetValue(uniquingset, plist);
if (unique!=plist) {
refnum= (uint32_t)(uintptr_t)CFDictionaryGetValue(objtable, unique);
CFDictionaryAddValue(objtable, plist, (constvoid*)(uintptr_t)refnum);
 }
return;
 }
 }
refnum=CFArrayGetCount(objlist);
CFArrayAppendValue(objlist, plist);
CFDictionaryAddValue(objtable, plist, (constvoid*)(uintptr_t)refnum);
if (dicttype==type) {
CFIndexcount=CFDictionaryGetCount((CFDictionaryRef)plist);
list= (count <= 128) ? buffer : (CFPropertyListRef*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, 2*count*sizeof(CFTypeRef), __kCFAllocatorGCScannedMemory);
CFDictionaryGetKeysAndValues((CFDictionaryRef)plist, list, list+count);
for (idx=0; idx<2*count; idx++) {
_flattenPlist(list[idx], objlist, objtable, uniquingset);
 }
if (list!=buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, list);
 } elseif (arraytype==type) {
CFIndexcount=CFArrayGetCount((CFArrayRef)plist);
list= (count <= 256) ? buffer : (CFPropertyListRef*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, count*sizeof(CFTypeRef), __kCFAllocatorGCScannedMemory);
CFArrayGetValues((CFArrayRef)plist, CFRangeMake(0, count), list);
for (idx=0; idx<count; idx++) {
_flattenPlist(list[idx], objlist, objtable, uniquingset);
 }
if (list!=buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, list);
 }
}

/* Get the number of bytes required to hold the value in 'count'. Will return a power of 2 value big enough to hold 'count'.
 */
CF_INLINEuint8_t_byteCount(uint64_tcount) {
uint64_tmask= ~(uint64_t)0;
uint8_tsize=0;

// Find something big enough to hold 'count'
while (count&mask) {
size++;
mask=mask << 8;
 }

// Ensure that 'count' is a power of 2
// For sizes bigger than 8, just use the required count
while ((size!=1&&size!=2&&size!=4&&size!=8) &&size <= 8) {
size++;
 }

returnsize;
}


// stream can be a CFWriteStreamRef (on supported platforms) or a CFMutableDataRef
/* Write a property list to a stream, in binary format. plist is the property list to write (one of the basic property list types), stream is the destination of the property list, and estimate is a best-guess at the total number of objects in the property list. The estimate parameter is for efficiency in pre-allocating memory for the uniquing step. Pass in a 0 if no estimate is available. The options flag specifies sort options. If the error parameter is non-NULL and an error occurs, it will be used to return a CFError explaining the problem. It is the callers responsibility to release the error. */
CFIndex__CFBinaryPlistWrite(CFPropertyListRefplist, CFTypeRefstream, uint64_testimate, CFOptionFlagsoptions, CFErrorRef*error) {
CFMutableDictionaryRefobjtable;
CFMutableArrayRefobjlist;
CFMutableSetRefuniquingset;
CFBinaryPlistTrailertrailer;
uint64_t*offsets, length_so_far;
uint64_trefnum;
int64_tidx, idx2, cnt;
__CFBinaryPlistWriteBuffer*buf;

initStatics();

constCFDictionaryKeyCallBacksdictKeyCallbacks= {0, __CFTypeCollectionRetain, __CFTypeCollectionRelease, 0, 0, 0};
objtable=CFDictionaryCreateMutable(kCFAllocatorSystemDefault, 0, &dictKeyCallbacks, NULL);

constCFArrayCallBacksarrayCallbacks= {0, __CFTypeCollectionRetain, __CFTypeCollectionRelease, 0, 0};
objlist=CFArrayCreateMutable(kCFAllocatorSystemDefault, 0, &arrayCallbacks);


constCFSetCallBackssetCallbacks= {0, __CFTypeCollectionRetain, __CFTypeCollectionRelease, 0, 0, 0};
uniquingset=CFSetCreateMutable(kCFAllocatorSystemDefault, 0, &setCallbacks);

#ifDEPLOYMENT_TARGET_MACOSX
_CFDictionarySetCapacity(objtable, estimate ? estimate : 650);
_CFArraySetCapacity(objlist, estimate ? estimate : 650);
_CFSetSetCapacity(uniquingset, estimate ? estimate : 1000);
#endif

_flattenPlist(plist, objlist, objtable, uniquingset);

CFRelease(uniquingset);

cnt=CFArrayGetCount(objlist);
offsets= (uint64_t*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, (CFIndex)(cnt*sizeof(*offsets)), 0);

buf= (__CFBinaryPlistWriteBuffer*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, sizeof(__CFBinaryPlistWriteBuffer), 0);
buf->stream=stream;
buf->error=NULL;
buf->streamIsData= (CFGetTypeID(stream) ==CFDataGetTypeID());
buf->written=0;
buf->used=0;
bufferWrite(buf, (uint8_t*)"bplist00", 8); // header

memset(&trailer, 0, sizeof(trailer));
trailer._numObjects=CFSwapInt64HostToBig(cnt);
trailer._topObject=0; // true for this implementation
trailer._objectRefSize=_byteCount(cnt); 
for (idx=0; idx<cnt; idx++) {
CFPropertyListRefobj=CFArrayGetValueAtIndex(objlist, (CFIndex)idx);
CFTypeIDtype=CFGetTypeID(obj);
offsets[idx] =buf->written+buf->used;
if (stringtype==type) {
CFIndexret, count=CFStringGetLength((CFStringRef)obj);
CFIndexneeded;
uint8_t*bytes, buffer[1024];
bytes= (count <= 1024) ? buffer : (uint8_t*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, count, 0);
// presumption, believed to be true, is that ASCII encoding may need
// less bytes, but will not need greater, than the # of unichars
ret=CFStringGetBytes((CFStringRef)obj, CFRangeMake(0, count), kCFStringEncodingASCII, 0, false, bytes, count, &needed);
if (ret==count) {
uint8_tmarker= (uint8_t)(kCFBinaryPlistMarkerASCIIString | (needed<15 ? needed : 0xf));
bufferWrite(buf, &marker, 1);
if (15 <= needed) {
_appendInt(buf, (uint64_t)needed);
 }
bufferWrite(buf, bytes, needed);
 } else {
UniChar*chars;
uint8_tmarker= (uint8_t)(kCFBinaryPlistMarkerUnicode16String | (count<15 ? count : 0xf));
bufferWrite(buf, &marker, 1);
if (15 <= count) {
_appendInt(buf, (uint64_t)count);
 }
chars= (UniChar*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, count*sizeof(UniChar), 0);
CFStringGetCharacters((CFStringRef)obj, CFRangeMake(0, count), chars);
for (idx2=0; idx2<count; idx2++) {
chars[idx2] =CFSwapInt16HostToBig(chars[idx2]);
 }
bufferWrite(buf, (uint8_t*)chars, count*sizeof(UniChar));
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, chars);
 }
if (bytes!=buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, bytes);
 } elseif (numbertype==type) {
uint8_tmarker;
uint64_tbigint;
uint8_t*bytes;
CFIndexnbytes;
if (CFNumberIsFloatType((CFNumberRef)obj)) {
CFSwappedFloat64swapped64;
CFSwappedFloat32swapped32;
if (CFNumberGetByteSize((CFNumberRef)obj) <= (CFIndex)sizeof(float)) {
floatv;
CFNumberGetValue((CFNumberRef)obj, kCFNumberFloat32Type, &v);
swapped32=CFConvertFloat32HostToSwapped(v);
bytes= (uint8_t*)&swapped32;
nbytes=sizeof(float);
marker=kCFBinaryPlistMarkerReal | 2;
 } else {
doublev;
CFNumberGetValue((CFNumberRef)obj, kCFNumberFloat64Type, &v);
swapped64=CFConvertFloat64HostToSwapped(v);
bytes= (uint8_t*)&swapped64;
nbytes=sizeof(double);
marker=kCFBinaryPlistMarkerReal | 3;
 }
bufferWrite(buf, &marker, 1);
bufferWrite(buf, bytes, nbytes);
 } else {
CFNumberTypetype=_CFNumberGetType2((CFNumberRef)obj);
if (kCFNumberSInt128Type==type) {
CFSInt128Structs;
CFNumberGetValue((CFNumberRef)obj, kCFNumberSInt128Type, &s);
struct {
int64_thigh;
uint64_tlow;
 } storage;
storage.high=CFSwapInt64HostToBig(s.high);
storage.low=CFSwapInt64HostToBig(s.low);
uint8_t*bytes= (uint8_t*)&storage;
uint8_tmarker=kCFBinaryPlistMarkerInt | 4;
CFIndexnbytes=16;
bufferWrite(buf, &marker, 1);
bufferWrite(buf, bytes, nbytes);
 } else {
CFNumberGetValue((CFNumberRef)obj, kCFNumberSInt64Type, &bigint);
_appendInt(buf, bigint);
 }
 }
 } elseif (_CFKeyedArchiverUIDGetTypeID() ==type) {
_appendUID(buf, (CFKeyedArchiverUIDRef)obj);
 } elseif (booltype==type) {
uint8_tmarker=CFBooleanGetValue((CFBooleanRef)obj) ? kCFBinaryPlistMarkerTrue : kCFBinaryPlistMarkerFalse;
bufferWrite(buf, &marker, 1);
 } elseif (datatype==type) {
CFIndexcount=CFDataGetLength((CFDataRef)obj);
uint8_tmarker= (uint8_t)(kCFBinaryPlistMarkerData | (count<15 ? count : 0xf));
bufferWrite(buf, &marker, 1);
if (15 <= count) {
_appendInt(buf, (uint64_t)count);
 }
bufferWrite(buf, CFDataGetBytePtr((CFDataRef)obj), count);
 } elseif (datetype==type) {
CFSwappedFloat64swapped;
uint8_tmarker=kCFBinaryPlistMarkerDate;
bufferWrite(buf, &marker, 1);
swapped=CFConvertFloat64HostToSwapped(CFDateGetAbsoluteTime((CFDateRef)obj));
bufferWrite(buf, (uint8_t*)&swapped, sizeof(swapped));
 } elseif (dicttype==type) {
CFIndexcount=CFDictionaryGetCount((CFDictionaryRef)obj);

uint8_tmarker= (uint8_t)(kCFBinaryPlistMarkerDict | (count<15 ? count : 0xf));
bufferWrite(buf, &marker, 1);
if (15 <= count) {
_appendInt(buf, (uint64_t)count);
 }

CFPropertyListRef*list, buffer[512];

list= (count <= 256) ? buffer : (CFPropertyListRef*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, 2*count*sizeof(CFTypeRef), __kCFAllocatorGCScannedMemory);
CFDictionaryGetKeysAndValues((CFDictionaryRef)obj, list, list+count);
for (idx2=0; idx2<2*count; idx2++) {
CFPropertyListRefvalue=list[idx2];
uint32_tswapped=0;
uint8_t*source= (uint8_t*)&swapped;
refnum= (uint32_t)(uintptr_t)CFDictionaryGetValue(objtable, value);
swapped=CFSwapInt32HostToBig((uint32_t)refnum);
bufferWrite(buf, source+sizeof(swapped) -trailer._objectRefSize, trailer._objectRefSize);
 }
if (list!=buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, list);
 } elseif (arraytype==type) {
CFIndexcount=CFArrayGetCount((CFArrayRef)obj);
CFPropertyListRef*list, buffer[256];
uint8_tmarker= (uint8_t)(kCFBinaryPlistMarkerArray | (count<15 ? count : 0xf));
bufferWrite(buf, &marker, 1);
if (15 <= count) {
_appendInt(buf, (uint64_t)count);
 }
list= (count <= 256) ? buffer : (CFPropertyListRef*)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, count*sizeof(CFTypeRef), __kCFAllocatorGCScannedMemory);
CFArrayGetValues((CFArrayRef)obj, CFRangeMake(0, count), list);
for (idx2=0; idx2<count; idx2++) {
CFPropertyListRefvalue=list[idx2];
uint32_tswapped=0;
uint8_t*source= (uint8_t*)&swapped;
refnum= (uint32_t)(uintptr_t)CFDictionaryGetValue(objtable, value);
swapped=CFSwapInt32HostToBig((uint32_t)refnum);
bufferWrite(buf, source+sizeof(swapped) -trailer._objectRefSize, trailer._objectRefSize);
 }
if (list!=buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, list);
 } else {
CFRelease(objtable);
CFRelease(objlist);
if (error&&buf->error) {
// caller will release error
*error=buf->error;
 } elseif (buf->error) {
// caller is not interested in error, release it here
CFRelease(buf->error);
 }
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, buf);
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, offsets);
return0;
 }
 }
CFRelease(objtable);
CFRelease(objlist);

length_so_far=buf->written+buf->used;
trailer._offsetTableOffset=CFSwapInt64HostToBig(length_so_far);
trailer._offsetIntSize=_byteCount(length_so_far);

for (idx=0; idx<cnt; idx++) {
uint64_tswapped=CFSwapInt64HostToBig(offsets[idx]);
uint8_t*source= (uint8_t*)&swapped;
bufferWrite(buf, source+sizeof(*offsets) -trailer._offsetIntSize, trailer._offsetIntSize);
 }
length_so_far+=cnt*trailer._offsetIntSize;
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, offsets);

bufferWrite(buf, (uint8_t*)&trailer, sizeof(trailer));
bufferFlush(buf);
length_so_far+=sizeof(trailer);
if (buf->error) {
if (error) {
// caller will release error
*error=buf->error;
 } else {
CFRelease(buf->error);
 }
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, buf);
return0;
 }
CFAllocatorDeallocate(kCFAllocatorSystemDefaultGCRefZero, buf);
return (CFIndex)length_so_far;
}


CFIndex__CFBinaryPlistWriteToStream(CFPropertyListRefplist, CFTypeRefstream) {
return__CFBinaryPlistWrite(plist, stream, 0, 0, NULL);
}

// to be removed soon
CFIndex__CFBinaryPlistWriteToStreamWithEstimate(CFPropertyListRefplist, CFTypeRefstream, uint64_testimate) {
return__CFBinaryPlistWrite(plist, stream, estimate, 0, NULL);
}

// to be removed soon
CFIndex__CFBinaryPlistWriteToStreamWithOptions(CFPropertyListRefplist, CFTypeRefstream, uint64_testimate, CFOptionFlagsoptions) {
return__CFBinaryPlistWrite(plist, stream, estimate, options, NULL);
}

#defineFAIL_FALSE do { return false; } while (0)
#defineFAIL_MAXOFFSET do { return UINT64_MAX; } while (0)

/* Grab a valSize-bytes integer out of the buffer pointed at by data and return it.
 */
CF_INLINEuint64_t_getSizedInt(constuint8_t*data, uint8_tvalSize) {
#if defined(__i386__) || defined(__x86_64__)
if (valSize==1) {
return (uint64_t)*data;
 } elseif (valSize==2) {
uint16_tval=*(uint16_t*)data;
return (uint64_t)CFSwapInt16BigToHost(val);
 } elseif (valSize==4) {
uint32_tval=*(uint32_t*)data;
return (uint64_t)CFSwapInt32BigToHost(val);
 } elseif (valSize==8) {
uint64_tval=*(uint64_t*)data;
returnCFSwapInt64BigToHost(val);
 }
#endif
// Compatability with existing archives, including anything with a non-power-of-2 
// size and 16-byte values, and architectures that don't support unaligned access
uint64_tres=0;
for (CFIndexidx=0; idx<valSize; idx++) {
res= (res << 8) +data[idx];
 }
returnres;
}

bool__CFBinaryPlistGetTopLevelInfo(constuint8_t*databytes, uint64_tdatalen, uint8_t*marker, uint64_t*offset, CFBinaryPlistTrailer*trailer) {
CFBinaryPlistTrailertrail;

initStatics();

if (!databytes||datalen<sizeof(trail) +8+1) FAIL_FALSE;
// Tiger and earlier will parse "bplist00"
// Leopard will parse "bplist00" or "bplist01"
// SnowLeopard will parse "bplist0?" where ? is any one character
if (0!=memcmp("bplist0", databytes, 7)) {
return false;
 }
memmove(&trail, databytes+datalen-sizeof(trail), sizeof(trail));
// In Leopard, the unused bytes in the trailer must be 0 or the parse will fail
// This check is not present in Tiger and earlier or after Leopard
trail._numObjects=CFSwapInt64BigToHost(trail._numObjects);
trail._topObject=CFSwapInt64BigToHost(trail._topObject);
trail._offsetTableOffset=CFSwapInt64BigToHost(trail._offsetTableOffset);

// Don't overflow on the number of objects or offset of the table
if (LONG_MAX<trail._numObjects) FAIL_FALSE;
if (LONG_MAX<trail._offsetTableOffset) FAIL_FALSE;

// Must be a minimum of 1 object
if (trail._numObjects<1) FAIL_FALSE;

// The ref to the top object must be a value in the range of 1 to the total number of objects
if (trail._numObjects <= trail._topObject) FAIL_FALSE;

// The offset table must be after at least 9 bytes of other data ('bplist??' + 1 byte of object table data).
if (trail._offsetTableOffset<9) FAIL_FALSE;

// The trailer must point to a value before itself in the data.
if (datalen-sizeof(trail) <= trail._offsetTableOffset) FAIL_FALSE;

// Minimum of 1 byte for the size of integers and references in the data
if (trail._offsetIntSize<1) FAIL_FALSE;
if (trail._objectRefSize<1) FAIL_FALSE;

int32_terr=CF_NO_ERROR;

// The total size of the offset table (number of objects * size of each int in the table) must not overflow
uint64_toffsetIntSize=trail._offsetIntSize;
uint64_toffsetTableSize=__check_uint64_mul_unsigned_unsigned(trail._numObjects, offsetIntSize, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

// The offset table must have at least 1 entry
if (offsetTableSize<1) FAIL_FALSE;

// Make sure the size of the offset table and data sections do not overflow
uint64_tobjectDataSize=trail._offsetTableOffset-8;
uint64_ttmpSum=__check_uint64_add_unsigned_unsigned(8, objectDataSize, &err);
tmpSum=__check_uint64_add_unsigned_unsigned(tmpSum, offsetTableSize, &err);
tmpSum=__check_uint64_add_unsigned_unsigned(tmpSum, sizeof(trail), &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

// The total size of the data should be equal to the sum of offsetTableOffset + sizeof(trailer)
if (datalen!=tmpSum) FAIL_FALSE;

// The object refs must be the right size to point into the offset table. That is, if the count of objects is 260, but only 1 byte is used to store references (max value 255), something is wrong.
if (trail._objectRefSize<8&& (1ULL << (8*trail._objectRefSize)) <= trail._numObjects) FAIL_FALSE;

// The integers used for pointers in the offset table must be able to reach as far as the start of the offset table.
if (trail._offsetIntSize<8&& (1ULL << (8*trail._offsetIntSize)) <= trail._offsetTableOffset) FAIL_FALSE;


constuint8_t*objectsFirstByte;
objectsFirstByte=check_ptr_add(databytes, 8, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
constuint8_t*offsetsFirstByte=check_ptr_add(databytes, trail._offsetTableOffset, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
constuint8_t*offsetsLastByte;
offsetsLastByte=check_ptr_add(offsetsFirstByte, offsetTableSize-1, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

constuint8_t*bytesptr=databytes+trail._offsetTableOffset;
uint64_tmaxOffset=trail._offsetTableOffset-1;
for (CFIndexidx=0; idx<trail._numObjects; idx++) {
uint64_toff=_getSizedInt(bytesptr, trail._offsetIntSize);
if (maxOffset<off) FAIL_FALSE;
bytesptr+=trail._offsetIntSize;
 }

bytesptr=databytes+trail._offsetTableOffset+trail._topObject*trail._offsetIntSize;
uint64_toff=_getSizedInt(bytesptr, trail._offsetIntSize);
if (off<8||trail._offsetTableOffset <= off) FAIL_FALSE;
if (trailer) *trailer=trail;
if (offset) *offset=off;
if (marker) *marker=*(databytes+off);
return true;
}

CF_INLINEBoolean_plistIsPrimitive(CFPropertyListRefpl) {
CFTypeIDtype=CFGetTypeID(pl);
if (dicttype==type||arraytype==type||settype==type) FAIL_FALSE;
return true;
}

CF_INLINEbool_readInt(constuint8_t*ptr, constuint8_t*end_byte_ptr, uint64_t*bigint, constuint8_t**newptr) {
if (end_byte_ptr<ptr) FAIL_FALSE;
uint8_tmarker=*ptr++;
if ((marker&0xf0) !=kCFBinaryPlistMarkerInt) FAIL_FALSE;
uint64_tcnt=1 << (marker&0x0f);
int32_terr=CF_NO_ERROR;
constuint8_t*extent=check_ptr_add(ptr, cnt, &err) -1;
if (CF_NO_ERROR!=err) FAIL_FALSE;
if (end_byte_ptr<extent) FAIL_FALSE;
// integers are not required to be in the most compact possible representation, but only the last 64 bits are significant currently
*bigint=_getSizedInt(ptr, cnt);
ptr+=cnt;
if (newptr) *newptr=ptr;
return true;
}

// bytesptr points at a ref
CF_INLINEuint64_t_getOffsetOfRefAt(constuint8_t*databytes, constuint8_t*bytesptr, constCFBinaryPlistTrailer*trailer) {
// *trailer contents are trusted, even for overflows -- was checked when the trailer was parsed;
// this pointer arithmetic and the multiplication was also already done once and checked,
// and the offsetTable was already validated.
constuint8_t*objectsFirstByte=databytes+8;
constuint8_t*offsetsFirstByte=databytes+trailer->_offsetTableOffset;
if (bytesptr<objectsFirstByte||offsetsFirstByte-trailer->_objectRefSize<bytesptr) FAIL_MAXOFFSET;

uint64_tref=_getSizedInt(bytesptr, trailer->_objectRefSize);
if (trailer->_numObjects <= ref) FAIL_MAXOFFSET;

bytesptr=databytes+trailer->_offsetTableOffset+ref*trailer->_offsetIntSize;
uint64_toff=_getSizedInt(bytesptr, trailer->_offsetIntSize);
returnoff;
}

bool__CFBinaryPlistGetOffsetForValueFromArray2(constuint8_t*databytes, uint64_tdatalen, uint64_tstartOffset, constCFBinaryPlistTrailer*trailer, CFIndexidx, uint64_t*offset, CFMutableDictionaryRefobjects) {
uint64_tobjectsRangeStart=8, objectsRangeEnd=trailer->_offsetTableOffset-1;
if (startOffset<objectsRangeStart||objectsRangeEnd<startOffset) FAIL_FALSE;
constuint8_t*ptr=databytes+startOffset;
uint8_tmarker=*ptr;
if ((marker&0xf0) !=kCFBinaryPlistMarkerArray) FAIL_FALSE;
int32_terr=CF_NO_ERROR;
ptr=check_ptr_add(ptr, 1, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
uint64_tcnt= (marker&0x0f);
if (0xf==cnt) {
uint64_tbigint;
if (!_readInt(ptr, databytes+objectsRangeEnd, &bigint, &ptr)) FAIL_FALSE;
if (LONG_MAX<bigint) FAIL_FALSE;
cnt=bigint;
 }
if (cnt <= idx) FAIL_FALSE;
size_tbyte_cnt=check_size_t_mul(cnt, trailer->_objectRefSize, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
constuint8_t*extent=check_ptr_add(ptr, byte_cnt, &err) -1;
if (CF_NO_ERROR!=err) FAIL_FALSE;
if (databytes+objectsRangeEnd<extent) FAIL_FALSE;
uint64_toff=_getOffsetOfRefAt(databytes, ptr+idx*trailer->_objectRefSize, trailer);
if (offset) *offset=off;
return true;
}

// Compatibility method, to be removed soon
CF_EXPORTbool__CFBinaryPlistGetOffsetForValueFromDictionary2(constuint8_t*databytes, uint64_tdatalen, uint64_tstartOffset, constCFBinaryPlistTrailer*trailer, CFTypeRefkey, uint64_t*koffset, uint64_t*voffset, CFMutableDictionaryRefobjects) {
return__CFBinaryPlistGetOffsetForValueFromDictionary3(databytes, datalen, startOffset, trailer, key, koffset, voffset, false, objects);
}

/* Get the offset for a value in a dictionary in a binary property list.
 @param databytes A pointer to the start of the binary property list data.
 @param datalen The length of the data.
 @param startOffset The offset at which the dictionary starts.
 @param trailer A pointer to a filled out trailer structure (use __CFBinaryPlistGetTopLevelInfo).
 @param key A string key in the dictionary that should be searched for.
 @param koffset Will be filled out with the offset to the key in the data bytes.
 @param voffset Will be filled out with the offset to the value in the data bytes.
 @param unused Unused parameter.
 @param objects Used for caching objects. Should be a valid CFMutableDictionaryRef.
 @return True if the key was found, false otherwise.
*/
bool__CFBinaryPlistGetOffsetForValueFromDictionary3(constuint8_t*databytes, uint64_tdatalen, uint64_tstartOffset, constCFBinaryPlistTrailer*trailer, CFTypeRefkey, uint64_t*koffset, uint64_t*voffset, Booleanunused, CFMutableDictionaryRefobjects) {

// Require a key that is a plist primitive
if (!key|| !_plistIsPrimitive(key)) FAIL_FALSE;

// Require that startOffset is in the range of the object table
uint64_tobjectsRangeStart=8, objectsRangeEnd=trailer->_offsetTableOffset-1;
if (startOffset<objectsRangeStart||objectsRangeEnd<startOffset) FAIL_FALSE;

// ptr is the start of the dictionary we are reading
constuint8_t*ptr=databytes+startOffset;

// Check that the data pointer actually points to a dictionary
uint8_tmarker=*ptr;
if ((marker&0xf0) !=kCFBinaryPlistMarkerDict) FAIL_FALSE;

// Get the number of objects in this dictionary
int32_terr=CF_NO_ERROR;
ptr=check_ptr_add(ptr, 1, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
uint64_tcnt= (marker&0x0f);
if (0xf==cnt) {
uint64_tbigint=0;
if (!_readInt(ptr, databytes+objectsRangeEnd, &bigint, &ptr)) FAIL_FALSE;
if (LONG_MAX<bigint) FAIL_FALSE;
cnt=bigint;
 }

// Total number of objects (keys + values) is cnt * 2
cnt=check_size_t_mul(cnt, 2, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;
size_tbyte_cnt=check_size_t_mul(cnt, trailer->_objectRefSize, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

// Find the end of the dictionary
constuint8_t*extent=check_ptr_add(ptr, byte_cnt, &err) -1;
if (CF_NO_ERROR!=err) FAIL_FALSE;

// Check that we didn't overflow the size of the dictionary
if (databytes+objectsRangeEnd<extent) FAIL_FALSE;

// For short keys (15 bytes or less) in ASCII form, we can do a quick comparison check
// We get the pointer or copy the buffer here, outside of the loop
CFIndexstringKeyLen=-1;
if (CFGetTypeID(key) ==stringtype) {
stringKeyLen=CFStringGetLength((CFStringRef)key);
 }

// Find the object in the dictionary with this key
cnt=cnt / 2;
uint64_ttotalKeySize=cnt*trailer->_objectRefSize;
uint64_toff;
Booleanmatch= false;
CFPropertyListRefkeyInData=NULL;

#defineKEY_BUFF_SIZE 16 
charkeyBuffer[KEY_BUFF_SIZE];
constchar*keyBufferPtr=NULL;

// If we have a string for the key, then we will grab the ASCII encoded version of it, if possible, and do a memcmp on it
if (stringKeyLen!=-1) {
// Since we will only be comparing ASCII strings, we can attempt to get a pointer using MacRoman encoding
// (this is cheaper than a copy)
if (!(keyBufferPtr=CFStringGetCStringPtr((CFStringRef)key, kCFStringEncodingMacRoman)) &&stringKeyLen<KEY_BUFF_SIZE) {
CFStringGetCString((CFStringRef)key, keyBuffer, KEY_BUFF_SIZE, kCFStringEncodingMacRoman);
// The pointer should now point to our keyBuffer instead of the original string buffer, since we've copied it
keyBufferPtr=keyBuffer;
 }
 }

// Perform linear search of the keys
for (CFIndexidx=0; idx<cnt; idx++) {
off=_getOffsetOfRefAt(databytes, ptr, trailer);
marker=*(databytes+off);
// if it is an ASCII string in the data, then we do a memcmp. If the key isn't ASCII, then it won't pass the compare, unless it hits some odd edge case of the ASCII string actually containing the unicode escape sequence.
if (keyBufferPtr&& (marker&0xf0) ==kCFBinaryPlistMarkerASCIIString) {
CFIndexlen=marker&0x0f;
// move past the marker
constuint8_t*ptr2=databytes+off;
err=CF_NO_ERROR;
ptr2=check_ptr_add(ptr2, 1, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

// If the key's length is large, and the length we are querying is also large, then we have to read it in. If stringKeyLen is less than 0xf, then len will never be equal to it if it was encoded as large.
if (0xf==len&&stringKeyLen >= 0xf) {
uint64_tbigint=0;
if (!_readInt(ptr2, databytes+objectsRangeEnd, &bigint, &ptr2)) FAIL_FALSE;
if (LONG_MAX<bigint) FAIL_FALSE;
len= (CFIndex)bigint;
 }

if (len==stringKeyLen) { 
err=CF_NO_ERROR;
extent=check_ptr_add(ptr2, len, &err);
if (CF_NO_ERROR!=err) FAIL_FALSE;

if (databytes+trailer->_offsetTableOffset <= extent) FAIL_FALSE;

// Compare the key to this potential match
if (memcmp(ptr2, keyBufferPtr, stringKeyLen) ==0) {
match= true;
 }
 }
 } else {
// temp object not saved in 'objects', because we don't know what allocator to use
// (what allocator __CFBinaryPlistCreateObject2() or __CFBinaryPlistCreateObject()
// will eventually be called with which results in that object)
keyInData=NULL;
if (!__CFBinaryPlistCreateObject2(databytes, datalen, off, trailer, kCFAllocatorSystemDefault, kCFPropertyListImmutable, NULL/*objects*/, NULL, 0, &keyInData) || !_plistIsPrimitive(keyInData)) {
if (keyInData) CFRelease(keyInData);
return false;
 }

match=CFEqual(key, keyInData); 
CFRelease(keyInData);
 } 

if (match) {
if (koffset) *koffset=off;
if (voffset) *voffset=_getOffsetOfRefAt(databytes, ptr+totalKeySize, trailer);
return true;
 }

ptr+=trailer->_objectRefSize;
 }

return false;
}