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CFPropertyList.c
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CFPropertyList.c
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/*
* Copyright (c) 2008-2012 Brent Fulgham <[email protected]>. 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) 2011 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@
*/
/* CFPropertyList.c
Copyright (c) 1999-2011, Apple Inc. All rights reserved.
Responsibility: Tony Parker
*/
#include <CoreFoundation/CFPropertyList.h>
#include <CoreFoundation/CFDate.h>
#include <CoreFoundation/CFNumber.h>
#include <CoreFoundation/CFSet.h>
#include <CoreFoundation/CFError.h>
#include <CoreFoundation/CFError_Private.h>
#include <CoreFoundation/CFPriv.h>
#include <CoreFoundation/CFStringEncodingConverter.h>
#include <CoreFoundation/CoreFoundation_Prefix.h>
#include <CoreFoundation/CFInternal.h>
#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED || DEPLOYMENT_TARGET_WINDOWS || DEPLOYMENT_TARGET_LINUX
#include <CoreFoundation/CFStream.h>
#endif
#include <CoreFoundation/CFCalendar.h>
#include "CFLocaleInternal.h"
#include <limits.h>
#include <float.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#define PLIST_IX 0
#define ARRAY_IX 1
#define DICT_IX 2
#define KEY_IX 3
#define STRING_IX 4
#define DATA_IX 5
#define DATE_IX 6
#define REAL_IX 7
#define INTEGER_IX 8
#define TRUE_IX 9
#define FALSE_IX 10
#define DOCTYPE_IX 11
#define CDSECT_IX 12
#define PLIST_TAG_LENGTH 5
#define ARRAY_TAG_LENGTH 5
#define DICT_TAG_LENGTH 4
#define KEY_TAG_LENGTH 3
#define STRING_TAG_LENGTH 6
#define DATA_TAG_LENGTH 4
#define DATE_TAG_LENGTH 4
#define REAL_TAG_LENGTH 4
#define INTEGER_TAG_LENGTH 7
#define TRUE_TAG_LENGTH 4
#define FALSE_TAG_LENGTH 5
#define DOCTYPE_TAG_LENGTH 7
#define CDSECT_TAG_LENGTH 9
#if DEPLOYMENT_TARGET_MACOSX
// Set for some exceptional circumstances, like running out of memory
extern char * __crashreporter_info__;
#define out_of_memory_warning() \
do { \
__crashreporter_info__ = "CFPropertyList ran out of memory while attempting to allocate temporary storage."; \
} while (0)
#else
#define out_of_memory_warning() do {} while (0)
#endif
#if !defined(new_cftype_array)
#define new_cftype_array(N, C) \
size_t N ## _count__ = (C); \
if (N ## _count__ > LONG_MAX / sizeof(CFTypeRef)) { \
out_of_memory_warning(); \
HALT; \
} \
Boolean N ## _is_stack__ = (N ## _count__ <= 256); \
if (N ## _count__ == 0) N ## _count__ = 1; \
STACK_BUFFER_DECL(CFTypeRef, N ## _buffer__, N ## _is_stack__ ? N ## _count__ : 1); \
if (N ## _is_stack__) memset(N ## _buffer__, 0, N ## _count__ * sizeof(CFTypeRef)); \
CFTypeRef * N = N ## _is_stack__ ? N ## _buffer__ : (CFTypeRef *)CFAllocatorAllocate(kCFAllocatorSystemDefaultGCRefZero, (N ## _count__) * sizeof(CFTypeRef), __kCFAllocatorGCScannedMemory); \
if (! N) { \
out_of_memory_warning(); \
HALT; \
} \
do {} while (0)
#endif
#if !defined(free_cftype_array)
#define free_cftype_array(N) \
if (! N ## _is_stack__) { \
if (!_CFAllocatorIsGCRefZero(kCFAllocatorSystemDefaultGCRefZero)) CFAllocatorDeallocate(kCFAllocatorSystemDefault, N); \
} \
do {} while (0)
#endif
// Used to reference an old-style plist parser error inside of a more general XML error
#define CFPropertyListOldStyleParserErrorKey CFSTR("kCFPropertyListOldStyleParsingError")
// don't allow _CFKeyedArchiverUID here
#define __CFAssertIsPList(cf) CFAssert2(CFGetTypeID(cf) == CFStringGetTypeID() || CFGetTypeID(cf) == CFArrayGetTypeID() || CFGetTypeID(cf) == CFBooleanGetTypeID() || CFGetTypeID(cf) == CFNumberGetTypeID() || CFGetTypeID(cf) == CFDictionaryGetTypeID() || CFGetTypeID(cf) == CFDateGetTypeID() || CFGetTypeID(cf) == CFDataGetTypeID(), __kCFLogAssertion, "%s(): %p not of a property list type", __PRETTY_FUNCTION__, cf);
static bool __CFPropertyListIsValidAux(CFPropertyListRef plist, bool recursive, CFMutableSetRef set, CFPropertyListFormat format, CFStringRef *error);
static CFTypeID stringtype = -1, datatype = -1, numbertype = -1, datetype = -1;
static CFTypeID booltype = -1, nulltype = -1, dicttype = -1, arraytype = -1, settype = -1;
static void initStatics() {
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();
}
}
__private_extern__ CFErrorRef __CFPropertyListCreateError(CFIndex code, CFStringRef debugString, ...) {
va_list argList;
CFErrorRef error = NULL;
if (debugString != NULL) {
CFStringRef debugMessage = NULL;
va_start(argList, debugString);
debugMessage = CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, NULL, debugString, argList);
va_end(argList);
CFMutableDictionaryRef userInfo = CFDictionaryCreateMutable(kCFAllocatorSystemDefault, 0, &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(userInfo, kCFErrorDebugDescriptionKey, debugMessage);
error = CFErrorCreate(kCFAllocatorSystemDefault, kCFErrorDomainCocoa, code, userInfo);
CFRelease(debugMessage);
CFRelease(userInfo);
} else {
error = CFErrorCreate(kCFAllocatorSystemDefault, kCFErrorDomainCocoa, code, NULL);
}
return error;
}
CFStringRef __CFPropertyListCopyErrorDebugDescription(CFErrorRef error) {
CFStringRef result = NULL;
if (error) {
CFDictionaryRef userInfo = CFErrorCopyUserInfo(error);
result = CFStringCreateCopy(kCFAllocatorSystemDefault, (CFStringRef)CFDictionaryGetValue(userInfo, kCFErrorDebugDescriptionKey));
CFRelease(userInfo);
}
return result;
}
struct context {
bool answer;
CFMutableSetRef set;
CFPropertyListFormat format;
CFStringRef *error;
};
static void __CFPropertyListIsArrayPlistAux(const void *value, void *context) {
struct context *ctx = (struct context *)context;
if (!ctx->answer) return;
if (!value && !*(ctx->error)) {
*(ctx->error) = (CFStringRef)CFRetain(CFSTR("property list arrays cannot contain NULL"));
}
ctx->answer = value && __CFPropertyListIsValidAux(value, true, ctx->set, ctx->format, ctx->error);
}
static void __CFPropertyListIsDictPlistAux(const void *key, const void *value, void *context) {
struct context *ctx = (struct context *)context;
if (!ctx->answer) return;
if (!key && !*(ctx->error)) *(ctx->error) = (CFStringRef)CFRetain(CFSTR("property list dictionaries cannot contain NULL keys"));
if (!value && !*(ctx->error)) *(ctx->error) = (CFStringRef)CFRetain(CFSTR("property list dictionaries cannot contain NULL values"));
if (stringtype != CFGetTypeID(key) && !*(ctx->error)) {
CFStringRef desc = CFCopyTypeIDDescription(CFGetTypeID(key));
*(ctx->error) = CFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("property list dictionaries may only have keys which are CFStrings, not '%@'"), desc);
CFRelease(desc);
}
ctx->answer = key && value && (stringtype == CFGetTypeID(key)) && __CFPropertyListIsValidAux(value, true, ctx->set, ctx->format, ctx->error);
}
static bool __CFPropertyListIsValidAux(CFPropertyListRef plist, bool recursive, CFMutableSetRef set, CFPropertyListFormat format, CFStringRef *error) {
CFTypeID type;
if (!plist) {
*error = (CFStringRef)CFRetain(CFSTR("property lists cannot contain NULL"));
return false;
}
type = CFGetTypeID(plist);
if (stringtype == type) return true;
if (datatype == type) return true;
if (kCFPropertyListOpenStepFormat != format) {
if (booltype == type) return true;
if (numbertype == type) return true;
if (datetype == type) return true;
if (_CFKeyedArchiverUIDGetTypeID() == type) return true;
}
if (!recursive && arraytype == type) return true;
if (!recursive && dicttype == type) return true;
// at any one invocation of this function, set should contain the objects in the "path" down to this object
if (CFSetContainsValue(set, plist)) {
*error = (CFStringRef)CFRetain(CFSTR("property lists cannot contain recursive container references"));
return false;
}
if (arraytype == type) {
struct context ctx = {true, set, format, error};
CFSetAddValue(set, plist);
CFArrayApplyFunction((CFArrayRef)plist, CFRangeMake(0, CFArrayGetCount((CFArrayRef)plist)), __CFPropertyListIsArrayPlistAux, &ctx);
CFSetRemoveValue(set, plist);
return ctx.answer;
}
if (dicttype == type) {
struct context ctx = {true, set, format, error};
CFSetAddValue(set, plist);
CFDictionaryApplyFunction((CFDictionaryRef)plist, __CFPropertyListIsDictPlistAux, &ctx);
CFSetRemoveValue(set, plist);
return ctx.answer;
}
CFStringRef desc = CFCopyTypeIDDescription(type);
*error = CFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("property lists cannot contain objects of type '%@'"), desc);
CFRelease(desc);
return false;
}
Boolean CFPropertyListIsValid(CFPropertyListRef plist, CFPropertyListFormat format) {
initStatics();
CFAssert1(plist != NULL, __kCFLogAssertion, "%s(): NULL is not a property list", __PRETTY_FUNCTION__);
CFMutableSetRef set = CFSetCreateMutable(kCFAllocatorSystemDefaultGCRefZero, 0, NULL);
CFStringRef error = NULL;
bool result = __CFPropertyListIsValidAux(plist, true, set, format, &error);
if (error) {
#if defined(DEBUG)
CFLog(kCFLogLevelWarning, CFSTR("CFPropertyListIsValid(): %@"), error);
#endif
CFRelease(error);
}
if (!_CFAllocatorIsGCRefZero(kCFAllocatorSystemDefaultGCRefZero)) CFRelease(set);
return result;
}
static Boolean _CFPropertyListIsValidWithErrorString(CFPropertyListRef plist, CFPropertyListFormat format, CFStringRef *error) {
initStatics();
CFAssert1(plist != NULL, __kCFLogAssertion, "%s(): NULL is not a property list", __PRETTY_FUNCTION__);
CFMutableSetRef set = CFSetCreateMutable(kCFAllocatorSystemDefaultGCRefZero, 0, NULL);
bool result = __CFPropertyListIsValidAux(plist, true, set, format, error);
if (!_CFAllocatorIsGCRefZero(kCFAllocatorSystemDefaultGCRefZero)) CFRelease(set);
return result;
}
static const UniChar CFXMLPlistTags[13][10]= {
{'p', 'l', 'i', 's', 't', '\0', '\0', '\0', '\0', '\0'},
{'a', 'r', 'r', 'a', 'y', '\0', '\0', '\0', '\0', '\0'},
{'d', 'i', 'c', 't', '\0', '\0', '\0', '\0', '\0', '\0'},
{'k', 'e', 'y', '\0', '\0', '\0', '\0', '\0', '\0', '\0'},
{'s', 't', 'r', 'i', 'n', 'g', '\0', '\0', '\0', '\0'},
{'d', 'a', 't', 'a', '\0', '\0', '\0', '\0', '\0', '\0'},
{'d', 'a', 't', 'e', '\0', '\0', '\0', '\0', '\0', '\0'},
{'r', 'e', 'a', 'l', '\0', '\0', '\0', '\0', '\0', '\0'},
{'i', 'n', 't', 'e', 'g', 'e', 'r', '\0', '\0', '\0'},
{'t', 'r', 'u', 'e', '\0', '\0', '\0', '\0', '\0', '\0'},
{'f', 'a', 'l', 's', 'e', '\0', '\0', '\0', '\0', '\0'},
{'D', 'O', 'C', 'T', 'Y', 'P', 'E', '\0', '\0', '\0'},
{'<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[', '\0'}
};
typedef struct {
const UniChar *begin; // first character of the XML to be parsed
const UniChar *curr; // current parse location
const UniChar *end; // the first character _after_ the end of the XML
CFErrorRef error;
CFAllocatorRef allocator;
UInt32 mutabilityOption;
CFMutableSetRef stringSet; // set of all strings involved in this parse; allows us to share non-mutable strings in the returned plist
Boolean allowNewTypes; // Whether to allow the new types supported by XML property lists, but not by the old, OPENSTEP ASCII property lists (CFNumber, CFBoolean, CFDate)
char _padding[3];
} _CFXMLPlistParseInfo;
static CFTypeRef parseOldStylePropertyListOrStringsFile(_CFXMLPlistParseInfo *pInfo);
CF_INLINE void __CFPListRelease(CFTypeRef cf, _CFXMLPlistParseInfo *pInfo) {
if (cf && !_CFAllocatorIsGCRefZero(pInfo->allocator)) CFRelease(cf);
}
// The following set of _plist... functions append various things to a mutable data which is in UTF8 encoding. These are pretty general. Assumption is call characters and CFStrings can be converted to UTF8 and appeneded.
// Null-terminated, ASCII or UTF8 string
//
static void _plistAppendUTF8CString(CFMutableDataRef mData, const char *cString) {
CFDataAppendBytes (mData, (const UInt8 *)cString, strlen(cString));
}
// UniChars
//
static void _plistAppendCharacters(CFMutableDataRef mData, const UniChar *chars, CFIndex length) {
CFIndex curLoc = 0;
do { // Flush out ASCII chars, BUFLEN at a time
#define BUFLEN 400
UInt8 buf[BUFLEN], *bufPtr = buf;
CFIndex cnt = 0;
while (cnt < length && (cnt - curLoc < BUFLEN) && (chars[cnt] < 128)) *bufPtr++ = (UInt8)(chars[cnt++]);
if (cnt > curLoc) { // Flush any ASCII bytes
CFDataAppendBytes(mData, buf, cnt - curLoc);
curLoc = cnt;
}
} while (curLoc < length && (chars[curLoc] < 128)); // We will exit out of here when we run out of chars or hit a non-ASCII char
if (curLoc < length) { // Now deal with non-ASCII chars
CFDataRef data = NULL;
CFStringRef str = NULL;
if ((str = CFStringCreateWithCharactersNoCopy(kCFAllocatorSystemDefault, chars + curLoc, length - curLoc, kCFAllocatorNull))) {
if ((data = CFStringCreateExternalRepresentation(kCFAllocatorSystemDefault, str, kCFStringEncodingUTF8, 0))) {
CFDataAppendBytes (mData, CFDataGetBytePtr(data), CFDataGetLength(data));
CFRelease(data);
}
CFRelease(str);
}
CFAssert1(str && data, __kCFLogAssertion, "%s(): Error writing plist", __PRETTY_FUNCTION__);
}
}
// Append CFString
//
static void _plistAppendString(CFMutableDataRef mData, CFStringRef str) {
const UniChar *chars;
const char *cStr;
CFDataRef data;
if ((chars = CFStringGetCharactersPtr(str))) {
_plistAppendCharacters(mData, chars, CFStringGetLength(str));
} else if ((cStr = CFStringGetCStringPtr(str, kCFStringEncodingASCII)) || (cStr = CFStringGetCStringPtr(str, kCFStringEncodingUTF8))) {
_plistAppendUTF8CString(mData, cStr);
} else if ((data = CFStringCreateExternalRepresentation(kCFAllocatorSystemDefault, str, kCFStringEncodingUTF8, 0))) {
CFDataAppendBytes (mData, CFDataGetBytePtr(data), CFDataGetLength(data));
CFRelease(data);
} else {
CFAssert1(TRUE, __kCFLogAssertion, "%s(): Error in plist writing", __PRETTY_FUNCTION__);
}
}
// Append CFString-style format + arguments
//
static void _plistAppendFormat(CFMutableDataRef mData, CFStringRef format, ...) {
CFStringRef fStr;
va_list argList;
va_start(argList, format);
fStr = CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, NULL, format, argList);
va_end(argList);
CFAssert1(fStr, __kCFLogAssertion, "%s(): Error writing plist", __PRETTY_FUNCTION__);
_plistAppendString(mData, fStr);
CFRelease(fStr);
}
static void _appendIndents(CFIndex numIndents, CFMutableDataRef str) {
#define NUMTABS 4
static const UniChar tabs[NUMTABS] = {'\t','\t','\t','\t'};
for (; numIndents > 0; numIndents -= NUMTABS) _plistAppendCharacters(str, tabs, (numIndents >= NUMTABS) ? NUMTABS : numIndents);
}
/* Append the escaped version of origStr to mStr.
*/
static void _appendEscapedString(CFStringRef origStr, CFMutableDataRef mStr) {
#define BUFSIZE 64
CFIndex i, length = CFStringGetLength(origStr);
CFIndex bufCnt = 0;
UniChar buf[BUFSIZE];
CFStringInlineBuffer inlineBuffer;
CFStringInitInlineBuffer(origStr, &inlineBuffer, CFRangeMake(0, length));
for (i = 0; i < length; i ++) {
UniChar ch = __CFStringGetCharacterFromInlineBufferQuick(&inlineBuffer, i);
if (CFStringIsSurrogateHighCharacter(ch) && (bufCnt + 2 >= BUFSIZE)) {
// flush the buffer first so we have room for a low/high pair and do not split them
_plistAppendCharacters(mStr, buf, bufCnt);
bufCnt = 0;
}
switch(ch) {
case '<':
if (bufCnt) _plistAppendCharacters(mStr, buf, bufCnt);
bufCnt = 0;
_plistAppendUTF8CString(mStr, "<");
break;
case '>':
if (bufCnt) _plistAppendCharacters(mStr, buf, bufCnt);
bufCnt = 0;
_plistAppendUTF8CString(mStr, ">");
break;
case '&':
if (bufCnt) _plistAppendCharacters(mStr, buf, bufCnt);
bufCnt = 0;
_plistAppendUTF8CString(mStr, "&");
break;
default:
buf[bufCnt++] = ch;
if (bufCnt == BUFSIZE) {
_plistAppendCharacters(mStr, buf, bufCnt);
bufCnt = 0;
}
break;
}
}
if (bufCnt) _plistAppendCharacters(mStr, buf, bufCnt);
}
/* Base-64 encoding/decoding */
/* The base-64 encoding packs three 8-bit bytes into four 7-bit ASCII
* characters. If the number of bytes in the original data isn't divisable
* by three, "=" characters are used to pad the encoded data. The complete
* set of characters used in base-64 are:
*
* 'A'..'Z' => 00..25
* 'a'..'z' => 26..51
* '0'..'9' => 52..61
* '+' => 62
* '/' => 63
* '=' => pad
*/
// Write the inputData to the mData using Base 64 encoding
static void _XMLPlistAppendDataUsingBase64(CFMutableDataRef mData, CFDataRef inputData, CFIndex indent) {
static const char __CFPLDataEncodeTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
#define MAXLINELEN 76
char buf[MAXLINELEN + 4 + 2]; // For the slop and carriage return and terminating NULL
const uint8_t *bytes = CFDataGetBytePtr(inputData);
CFIndex length = CFDataGetLength(inputData);
CFIndex i, pos;
const uint8_t *p;
if (indent > 8) indent = 8; // refuse to indent more than 64 characters
pos = 0; // position within buf
for (i = 0, p = bytes; i < length; i++, p++) {
/* 3 bytes are encoded as 4 */
switch (i % 3) {
case 0:
buf[pos++] = __CFPLDataEncodeTable [ ((p[0] >> 2) & 0x3f)];
break;
case 1:
buf[pos++] = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 4) & 0x3f)];
break;
case 2:
buf[pos++] = __CFPLDataEncodeTable [ ((((p[-1] << 8) | p[0]) >> 6) & 0x3f)];
buf[pos++] = __CFPLDataEncodeTable [ (p[0] & 0x3f)];
break;
}
/* Flush the line out every 76 (or fewer) chars --- indents count against the line length*/
if (pos >= MAXLINELEN - 8 * indent) {
buf[pos++] = '\n';
buf[pos++] = 0;
_appendIndents(indent, mData);
_plistAppendUTF8CString(mData, buf);
pos = 0;
}
}
switch (i % 3) {
case 0:
break;
case 1:
buf[pos++] = __CFPLDataEncodeTable [ ((p[-1] << 4) & 0x30)];
buf[pos++] = '=';
buf[pos++] = '=';
break;
case 2:
buf[pos++] = __CFPLDataEncodeTable [ ((p[-1] << 2) & 0x3c)];
buf[pos++] = '=';
break;
}
if (pos > 0) {
buf[pos++] = '\n';
buf[pos++] = 0;
_appendIndents(indent, mData);
_plistAppendUTF8CString(mData, buf);
}
}
extern CFStringRef __CFNumberCopyFormattingDescriptionAsFloat64(CFTypeRef cf);
static void _CFAppendXML0(CFTypeRef object, UInt32 indentation, CFMutableDataRef xmlString) {
UInt32 typeID = CFGetTypeID(object);
_appendIndents(indentation, xmlString);
if (typeID == stringtype) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[STRING_IX], STRING_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">");
_appendEscapedString((CFStringRef)object, xmlString);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[STRING_IX], STRING_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else if (typeID == arraytype) {
UInt32 i, count = CFArrayGetCount((CFArrayRef)object);
if (count == 0) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[ARRAY_IX], ARRAY_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, "/>\n");
return;
}
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[ARRAY_IX], ARRAY_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
for (i = 0; i < count; i ++) {
_CFAppendXML0(CFArrayGetValueAtIndex((CFArrayRef)object, i), indentation+1, xmlString);
}
_appendIndents(indentation, xmlString);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[ARRAY_IX], ARRAY_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else if (typeID == dicttype) {
UInt32 i, count = CFDictionaryGetCount((CFDictionaryRef)object);
CFMutableArrayRef keyArray;
if (count == 0) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DICT_IX], DICT_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, "/>\n");
return;
}
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DICT_IX], DICT_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
new_cftype_array(keys, count);
CFDictionaryGetKeysAndValues((CFDictionaryRef)object, keys, NULL);
keyArray = CFArrayCreateMutable(kCFAllocatorSystemDefault, count, &kCFTypeArrayCallBacks);
CFArrayReplaceValues(keyArray, CFRangeMake(0, 0), keys, count);
CFArraySortValues(keyArray, CFRangeMake(0, count), (CFComparatorFunction)CFStringCompare, NULL);
CFArrayGetValues(keyArray, CFRangeMake(0, count), keys);
CFRelease(keyArray);
for (i = 0; i < count; i ++) {
CFTypeRef key = keys[i];
_appendIndents(indentation+1, xmlString);
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[KEY_IX], KEY_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">");
_appendEscapedString((CFStringRef)key, xmlString);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[KEY_IX], KEY_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
_CFAppendXML0(CFDictionaryGetValue((CFDictionaryRef)object, key), indentation+1, xmlString);
}
free_cftype_array(keys);
_appendIndents(indentation, xmlString);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DICT_IX], DICT_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else if (typeID == datatype) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DATA_IX], DATA_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
_XMLPlistAppendDataUsingBase64(xmlString, (CFDataRef)object, indentation);
_appendIndents(indentation, xmlString);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DATA_IX], DATA_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else if (typeID == datetype) {
// YYYY '-' MM '-' DD 'T' hh ':' mm ':' ss 'Z'
int32_t y = 0, M = 0, d = 0, H = 0, m = 0, s = 0;
#if 1
CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(CFDateGetAbsoluteTime((CFDateRef)object), NULL);
y = date.year;
M = date.month;
d = date.day;
H = date.hour;
m = date.minute;
s = (int32_t)date.second;
#else
CFCalendarRef calendar = CFCalendarCreateWithIdentifier(kCFAllocatorSystemDefault, kCFCalendarIdentifierGregorian);
CFTimeZoneRef tz = CFTimeZoneCreateWithName(kCFAllocatorSystemDefault, CFSTR("GMT"), true);
CFCalendarSetTimeZone(calendar, tz);
CFCalendarDecomposeAbsoluteTime(calendar, CFDateGetAbsoluteTime((CFDateRef)object), (const uint8_t *)"yMdHms", &y, &M, &d, &H, &m, &s);
CFRelease(calendar);
CFRelease(tz);
#endif
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DATE_IX], DATE_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">");
_plistAppendFormat(xmlString, CFSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), y, M, d, H, m, s);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[DATE_IX], DATE_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else if (typeID == numbertype) {
if (CFNumberIsFloatType((CFNumberRef)object)) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[REAL_IX], REAL_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">");
CFStringRef s = __CFNumberCopyFormattingDescriptionAsFloat64(object);
_plistAppendString(xmlString, s);
CFRelease(s);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[REAL_IX], REAL_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
} else {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[INTEGER_IX], INTEGER_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">");
_plistAppendFormat(xmlString, CFSTR("%@"), object);
_plistAppendUTF8CString(xmlString, "</");
_plistAppendCharacters(xmlString, CFXMLPlistTags[INTEGER_IX], INTEGER_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, ">\n");
}
} else if (typeID == booltype) {
if (CFBooleanGetValue((CFBooleanRef)object)) {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[TRUE_IX], TRUE_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, "/>\n");
} else {
_plistAppendUTF8CString(xmlString, "<");
_plistAppendCharacters(xmlString, CFXMLPlistTags[FALSE_IX], FALSE_TAG_LENGTH);
_plistAppendUTF8CString(xmlString, "/>\n");
}
}
}
static void _CFGenerateXMLPropertyListToData(CFMutableDataRef xml, CFTypeRef propertyList) {
_plistAppendUTF8CString(xml, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE ");
_plistAppendCharacters(xml, CFXMLPlistTags[PLIST_IX], PLIST_TAG_LENGTH);
_plistAppendUTF8CString(xml, " PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n<");
_plistAppendCharacters(xml, CFXMLPlistTags[PLIST_IX], PLIST_TAG_LENGTH);
_plistAppendUTF8CString(xml, " version=\"1.0\">\n");
_CFAppendXML0(propertyList, 0, xml);
_plistAppendUTF8CString(xml, "</");
_plistAppendCharacters(xml, CFXMLPlistTags[PLIST_IX], PLIST_TAG_LENGTH);
_plistAppendUTF8CString(xml, ">\n");
}
CFDataRef _CFPropertyListCreateXMLData(CFAllocatorRef allocator, CFPropertyListRef propertyList, Boolean checkValidPlist) {
initStatics();
CFMutableDataRef xml;
CFAssert1(propertyList != NULL, __kCFLogAssertion, "%s(): Cannot be called with a NULL property list", __PRETTY_FUNCTION__);
if (checkValidPlist && !CFPropertyListIsValid(propertyList, kCFPropertyListXMLFormat_v1_0)) {
__CFAssertIsPList(propertyList);
return NULL;
}
xml = CFDataCreateMutable(allocator, 0);
_CFGenerateXMLPropertyListToData(xml, propertyList);
return xml;
}
CFDataRef CFPropertyListCreateXMLData(CFAllocatorRef allocator, CFPropertyListRef propertyList) {
return _CFPropertyListCreateXMLData(allocator, propertyList, true);
}
CF_EXPORT CFDataRef _CFPropertyListCreateXMLDataWithExtras(CFAllocatorRef allocator, CFPropertyListRef propertyList) {
return _CFPropertyListCreateXMLData(allocator, propertyList, false);
}
// ========================================================================
//
// ------------------------- Reading plists ------------------
//
static void skipInlineDTD(_CFXMLPlistParseInfo *pInfo);
static CFTypeRef parseXMLElement(_CFXMLPlistParseInfo *pInfo, Boolean *isKey);
// warning: doesn't have a good idea of Unicode line separators
static UInt32 lineNumber(_CFXMLPlistParseInfo *pInfo) {
const UniChar *p = pInfo->begin;
UInt32 count = 1;
while (p < pInfo->curr) {
if (*p == '\r') {
count ++;
if (*(p + 1) == '\n')
p ++;
} else if (*p == '\n') {
count ++;
}
p ++;
}
return count;
}
// warning: doesn't have a good idea of Unicode white space
CF_INLINE void skipWhitespace(_CFXMLPlistParseInfo *pInfo) {
while (pInfo->curr < pInfo->end) {
switch (*(pInfo->curr)) {
case ' ':
case '\t':
case '\n':
case '\r':
pInfo->curr ++;
continue;
default:
return;
}
}
}
/* All of these advance to the end of the given construct and return a pointer to the first character beyond the construct. If the construct doesn't parse properly, NULL is returned. */
// pInfo should be just past "<!--"
static void skipXMLComment(_CFXMLPlistParseInfo *pInfo) {
const UniChar *p = pInfo->curr;
const UniChar *end = pInfo->end - 3; // Need at least 3 characters to compare against
while (p < end) {
if (*p == '-' && *(p+1) == '-' && *(p+2) == '>') {
pInfo->curr = p+3;
return;
}
p ++;
}
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Unterminated comment started on line %d"), lineNumber(pInfo));
}
// stringToMatch and buf must both be of at least len
static Boolean matchString(const UniChar *buf, const UniChar *stringToMatch, UInt32 len) {
switch (len) {
case 10: if (buf[9] != stringToMatch[9]) return false;
case 9: if (buf[8] != stringToMatch[8]) return false;
case 8: if (buf[7] != stringToMatch[7]) return false;
case 7: if (buf[6] != stringToMatch[6]) return false;
case 6: if (buf[5] != stringToMatch[5]) return false;
case 5: if (buf[4] != stringToMatch[4]) return false;
case 4: if (buf[3] != stringToMatch[3]) return false;
case 3: if (buf[2] != stringToMatch[2]) return false;
case 2: if (buf[1] != stringToMatch[1]) return false;
case 1: if (buf[0] != stringToMatch[0]) return false;
case 0: return true;
}
return false; // internal error
}
// pInfo should be set to the first character after "<?"
static void skipXMLProcessingInstruction(_CFXMLPlistParseInfo *pInfo) {
const UniChar *begin = pInfo->curr, *end = pInfo->end - 2; // Looking for "?>" so we need at least 2 characters
while (pInfo->curr < end) {
if (*(pInfo->curr) == '?' && *(pInfo->curr+1) == '>') {
pInfo->curr += 2;
return;
}
pInfo->curr ++;
}
pInfo->curr = begin;
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing the processing instruction begun on line %d"), lineNumber(pInfo));
}
// first character should be immediately after the "<!"
static void skipDTD(_CFXMLPlistParseInfo *pInfo) {
// First pass "DOCTYPE"
if (pInfo->end - pInfo->curr < DOCTYPE_TAG_LENGTH || !matchString(pInfo->curr, CFXMLPlistTags[DOCTYPE_IX], DOCTYPE_TAG_LENGTH)) {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Malformed DTD on line %d"), lineNumber(pInfo));
return;
}
pInfo->curr += DOCTYPE_TAG_LENGTH;
skipWhitespace(pInfo);
// Look for either the beginning of a complex DTD or the end of the DOCTYPE structure
while (pInfo->curr < pInfo->end) {
UniChar ch = *(pInfo->curr);
if (ch == '[') break; // inline DTD
if (ch == '>') { // End of the DTD
pInfo->curr ++;
return;
}
pInfo->curr ++;
}
if (pInfo->curr == pInfo->end) {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing DTD"));
return;
}
// *Sigh* Must parse in-line DTD
skipInlineDTD(pInfo);
if (pInfo->error) return;
skipWhitespace(pInfo);
if (pInfo->error) return;
if (pInfo->curr < pInfo->end) {
if (*(pInfo->curr) == '>') {
pInfo->curr ++;
} else {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected character %c on line %d while parsing DTD"), *(pInfo->curr), lineNumber(pInfo));
}
} else {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing DTD"));
}
}
static void skipPERef(_CFXMLPlistParseInfo *pInfo) {
const UniChar *p = pInfo->curr;
while (p < pInfo->end) {
if (*p == ';') {
pInfo->curr = p+1;
return;
}
p ++;
}
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing percent-escape sequence begun on line %d"), lineNumber(pInfo));
}
// First character should be just past '['
static void skipInlineDTD(_CFXMLPlistParseInfo *pInfo) {
while (!pInfo->error && pInfo->curr < pInfo->end) {
UniChar ch;
skipWhitespace(pInfo);
ch = *pInfo->curr;
if (ch == '%') {
pInfo->curr ++;
skipPERef(pInfo);
} else if (ch == '<') {
pInfo->curr ++;
if (pInfo->curr >= pInfo->end) {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing inline DTD"));
return;
}
ch = *(pInfo->curr);
if (ch == '?') {
pInfo->curr ++;
skipXMLProcessingInstruction(pInfo);
} else if (ch == '!') {
if (pInfo->curr + 2 < pInfo->end && (*(pInfo->curr+1) == '-' && *(pInfo->curr+2) == '-')) {
pInfo->curr += 3;
skipXMLComment(pInfo);
} else {
// Skip the myriad of DTD declarations of the form "<!string" ... ">"
pInfo->curr ++; // Past both '<' and '!'
while (pInfo->curr < pInfo->end) {
if (*(pInfo->curr) == '>') break;
pInfo->curr ++;
}
if (*(pInfo->curr) != '>') {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing inline DTD"));
return;
}
pInfo->curr ++;
}
} else {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected character %c on line %d while parsing inline DTD"), ch, lineNumber(pInfo));
return;
}
} else if (ch == ']') {
pInfo->curr ++;
return;
} else {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected character %c on line %d while parsing inline DTD"), ch, lineNumber(pInfo));
return;
}
}
if (!pInfo->error) {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF while parsing inline DTD"));
}
}
/* A bit wasteful to do everything with unichars (since we know all the characters we're going to see are 7-bit ASCII), but since our data is coming from or going to a CFString, this prevents the extra cost of converting formats. */
static const signed char __CFPLDataDecodeTable[128] = {
/* 000 */ -1, -1, -1, -1, -1, -1, -1, -1,
/* 010 */ -1, -1, -1, -1, -1, -1, -1, -1,
/* 020 */ -1, -1, -1, -1, -1, -1, -1, -1,
/* 030 */ -1, -1, -1, -1, -1, -1, -1, -1,
/* ' ' */ -1, -1, -1, -1, -1, -1, -1, -1,
/* '(' */ -1, -1, -1, 62, -1, -1, -1, 63,
/* '0' */ 52, 53, 54, 55, 56, 57, 58, 59,
/* '8' */ 60, 61, -1, -1, -1, 0, -1, -1,
/* '@' */ -1, 0, 1, 2, 3, 4, 5, 6,
/* 'H' */ 7, 8, 9, 10, 11, 12, 13, 14,
/* 'P' */ 15, 16, 17, 18, 19, 20, 21, 22,
/* 'X' */ 23, 24, 25, -1, -1, -1, -1, -1,
/* '`' */ -1, 26, 27, 28, 29, 30, 31, 32,
/* 'h' */ 33, 34, 35, 36, 37, 38, 39, 40,
/* 'p' */ 41, 42, 43, 44, 45, 46, 47, 48,
/* 'x' */ 49, 50, 51, -1, -1, -1, -1, -1
};
static CFDataRef __CFPLDataDecode(_CFXMLPlistParseInfo *pInfo, Boolean isMutable) {
int tmpbufpos = 0;
int tmpbuflen = 256;
uint8_t *tmpbuf;
int numeq = 0;
int acc = 0;
int cntr = 0;
tmpbuf = (uint8_t *)CFAllocatorAllocate(pInfo->allocator, tmpbuflen, 0);
for (; pInfo->curr < pInfo->end; pInfo->curr++) {
UniChar c = *(pInfo->curr);
if (c == '<') {
break;
}
if ('=' == c) {
numeq++;
} else if (!isspace(c)) {
numeq = 0;
}
if (__CFPLDataDecodeTable[c] < 0)
continue;
cntr++;
acc <<= 6;
acc += __CFPLDataDecodeTable[c];
if (0 == (cntr & 0x3)) {
if (tmpbuflen <= tmpbufpos + 2) {
if (tmpbuflen < 256 * 1024) {
tmpbuflen *= 4;
} else if (tmpbuflen < 16 * 1024 * 1024) {
tmpbuflen *= 2;
} else {
// once in this stage, this will be really slow
// and really potentially fragment memory
tmpbuflen += 256 * 1024;
}
tmpbuf = (uint8_t *)CFAllocatorReallocate(pInfo->allocator, tmpbuf, tmpbuflen, 0);
if (!tmpbuf) HALT;
}
tmpbuf[tmpbufpos++] = (acc >> 16) & 0xff;
if (numeq < 2)
tmpbuf[tmpbufpos++] = (acc >> 8) & 0xff;
if (numeq < 1)
tmpbuf[tmpbufpos++] = acc & 0xff;
}
}
if (isMutable) {
CFMutableDataRef result = CFDataCreateMutable(pInfo->allocator, 0);
CFDataAppendBytes(result, tmpbuf, tmpbufpos);
CFAllocatorDeallocate(pInfo->allocator, tmpbuf);
return result;
} else {
return CFDataCreateWithBytesNoCopy(pInfo->allocator, tmpbuf, tmpbufpos, pInfo->allocator);
}
}
// content ::== (element | CharData | Reference | CDSect | PI | Comment)*
// In the context of a plist, CharData, Reference and CDSect are not legal (they all resolve to strings). Skipping whitespace, then, the next character should be '<'. From there, we figure out which of the three remaining cases we have (element, PI, or Comment).
static CFTypeRef getContentObject(_CFXMLPlistParseInfo *pInfo, Boolean *isKey) {
if (isKey) *isKey = false;
while (!pInfo->error && pInfo->curr < pInfo->end) {
skipWhitespace(pInfo);
if (pInfo->curr >= pInfo->end) {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected EOF"));
return NULL;
}
if (*(pInfo->curr) != '<') {
pInfo->error = __CFPropertyListCreateError(kCFPropertyListReadCorruptError, CFSTR("Encountered unexpected character %c on line %d"), *(pInfo->curr), lineNumber(pInfo));
return NULL;
}