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CFXMLParser.c
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/* CFXMLParser.c
Copyright (c) 1999-2018, Apple Inc. All rights reserved.
Responsibility: David Smith
*/
#include <CoreFoundation/CFXMLParser.h>
#include <CoreFoundation/CFNumber.h>
#include "CFXMLInputStream.h"
#include "CFUniChar.h"
#include "CFInternal.h"
#include "CFRuntime_Internal.h"
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
struct __CFXMLParser {
CFRuntimeBase _cfBase;
_CFXMLInputStream input;
void **stack;
void **top;
UInt32 capacity;
struct __CFXMLNode *node; // Our private node; we use it to report back information
CFMutableDictionaryRef argDict;
CFMutableArrayRef argArray;
UInt32 options;
CFXMLParserCallBacks callBacks;
CFXMLParserContext context;
CFXMLParserStatusCode status;
CFStringRef errorString;
};
static CFStringRef __CFXMLParserCopyDescription(CFTypeRef cf) {
const struct __CFXMLParser *parser = (const struct __CFXMLParser *)cf;
return CFStringCreateWithFormat(CFGetAllocator(cf), NULL, CFSTR("<CFXMLParser %p>"), parser);
}
static void __CFXMLParserDeallocate(CFTypeRef cf) {
struct __CFXMLParser *parser = (struct __CFXMLParser *)cf;
CFAllocatorRef alloc = CFGetAllocator(parser);
_freeInputStream(&(parser->input));
if (parser->argDict) CFRelease(parser->argDict);
if (parser->argArray) CFRelease(parser->argArray);
if (parser->errorString) CFRelease(parser->errorString);
if (parser->node) CFRelease(parser->node);
CFAllocatorDeallocate(alloc, parser->stack);
if (parser->context.info && parser->context.release) {
parser->context.release(parser->context.info);
}
}
const CFRuntimeClass __CFXMLParserClass = {
0,
"CFXMLParser",
NULL, // init
NULL, // copy
__CFXMLParserDeallocate,
NULL,
NULL,
NULL, //
__CFXMLParserCopyDescription
};
CFTypeID CFXMLParserGetTypeID(void) {
return _kCFRuntimeIDCFXMLParser;
}
void CFXMLParserGetContext(CFXMLParserRef parser, CFXMLParserContext *context) {
CFAssert1(parser != NULL, __kCFLogAssertion, "%s(): NULL parser not permitted", __PRETTY_FUNCTION__);
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
if (context) {
context->version = parser->context.version;
context->info = parser->context.info;
context->retain = parser->context.retain;
context->release = parser->context.release;
context->copyDescription = parser->context.copyDescription;
UNFAULT_CALLBACK(context->retain);
UNFAULT_CALLBACK(context->release);
UNFAULT_CALLBACK(context->copyDescription);
}
}
void CFXMLParserGetCallBacks(CFXMLParserRef parser, CFXMLParserCallBacks *callBacks) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
if (callBacks) {
callBacks->version = parser->callBacks.version;
callBacks->createXMLStructure = parser->callBacks.createXMLStructure;
callBacks->addChild = parser->callBacks.addChild;
callBacks->endXMLStructure = parser->callBacks.endXMLStructure;
callBacks->resolveExternalEntity = parser->callBacks.resolveExternalEntity;
callBacks->handleError = parser->callBacks.handleError;
UNFAULT_CALLBACK(callBacks->createXMLStructure);
UNFAULT_CALLBACK(callBacks->addChild);
UNFAULT_CALLBACK(callBacks->endXMLStructure);
UNFAULT_CALLBACK(callBacks->resolveExternalEntity);
UNFAULT_CALLBACK(callBacks->handleError);
}
}
CFURLRef CFXMLParserGetSourceURL(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
return parser->input.url;
}
/* Returns the character index or line number of the current parse location */
CFIndex CFXMLParserGetLocation(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
return _inputStreamCurrentLocation(&parser->input);
}
CFIndex CFXMLParserGetLineNumber(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
return _inputStreamCurrentLine(&parser->input);
}
/* Returns the top-most object returned by the createXMLStructure callback */
void *CFXMLParserGetDocument(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
if (parser->capacity > 0)
return parser->stack[0];
else
return NULL;
}
CFXMLParserStatusCode CFXMLParserGetStatusCode(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
return parser->status;
}
CFStringRef CFXMLParserCopyErrorDescription(CFXMLParserRef parser) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
return (CFStringRef)CFRetain(parser->errorString);
}
void CFXMLParserAbort(CFXMLParserRef parser, CFXMLParserStatusCode errorCode, CFStringRef errorDescription) {
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
CFAssert1(errorCode > 0, __kCFLogAssertion, "%s(): errorCode must be greater than zero", __PRETTY_FUNCTION__);
CFAssert1(errorDescription != NULL, __kCFLogAssertion, "%s(): errorDescription may not be NULL", __PRETTY_FUNCTION__);
__CFGenericValidateType(errorDescription, CFStringGetTypeID());
parser->status = errorCode;
if (parser->errorString) CFRelease(parser->errorString);
parser->errorString = (CFStringRef)CFStringCreateCopy(kCFAllocatorSystemDefault, errorDescription);
}
static Boolean parseXML(CFXMLParserRef parser);
static Boolean parseComment(CFXMLParserRef parser, Boolean report);
static Boolean parseProcessingInstruction(CFXMLParserRef parser, Boolean report);
static Boolean parseInlineDTD(CFXMLParserRef parser);
static Boolean parseDTD(CFXMLParserRef parser);
static Boolean parsePhysicalEntityReference(CFXMLParserRef parser);
static Boolean parseCDSect(CFXMLParserRef parser);
static Boolean parseEntityReference(CFXMLParserRef parser, Boolean report);
static Boolean parsePCData(CFXMLParserRef parser);
static Boolean parseWhitespace(CFXMLParserRef parser);
static Boolean parseAttributeListDeclaration(CFXMLParserRef parser);
static Boolean parseNotationDeclaration(CFXMLParserRef parser);
static Boolean parseElementDeclaration(CFXMLParserRef parser);
static Boolean parseEntityDeclaration(CFXMLParserRef parser);
static Boolean parseExternalID(CFXMLParserRef parser, Boolean alsoAcceptPublicID, CFXMLExternalID *extID);
static Boolean parseCloseTag(CFXMLParserRef parser, CFStringRef tag);
static Boolean parseTagContent(CFXMLParserRef parser);
static Boolean parseTag(CFXMLParserRef parser);
static Boolean parseAttributes(CFXMLParserRef parser);
static Boolean parseAttributeValue(CFXMLParserRef parser, CFMutableStringRef str);
// Utilities; may need to make these accessible to the property list parser to avoid code duplication
static void _CFReportError(CFXMLParserRef parser, CFXMLParserStatusCode errNum, const char *str);
static Boolean reportNewLeaf(CFXMLParserRef parser); // Assumes parser->node has been set and is ready to go
static void pushXMLNode(CFXMLParserRef parser, void *node);
static CFXMLParserRef __CFXMLParserInit(CFAllocatorRef alloc, CFURLRef dataSource, CFOptionFlags options, CFDataRef xmlData, CFIndex version, CFXMLParserCallBacks *callBacks, CFXMLParserContext *context) {
struct __CFXMLParser *parser = (struct __CFXMLParser *)_CFRuntimeCreateInstance(alloc, CFXMLParserGetTypeID(), sizeof(struct __CFXMLParser) - sizeof(CFRuntimeBase), NULL);
struct __CFXMLNode *node = (struct __CFXMLNode *)_CFRuntimeCreateInstance(alloc, CFXMLNodeGetTypeID(), sizeof(struct __CFXMLNode) - sizeof(CFRuntimeBase), NULL);
UniChar *buf;
if (parser && node) {
alloc = CFGetAllocator(parser);
_initializeInputStream(&(parser->input), alloc, dataSource, xmlData);
parser->top = parser->stack;
parser->stack = NULL;
parser->capacity = 0;
buf = (UniChar *)CFAllocatorAllocate(alloc, 128*sizeof(UniChar), 0);
parser->node = node;
parser->node->dataString = CFStringCreateMutableWithExternalCharactersNoCopy(alloc, buf, 0, 128, alloc);
parser->node->additionalData = NULL;
parser->node->version = version;
parser->argDict = NULL; // don't create these until necessary
parser->argArray = NULL;
parser->options = options;
parser->callBacks = *callBacks;
FAULT_CALLBACK((void **)&(parser->callBacks.createXMLStructure));
FAULT_CALLBACK((void **)&(parser->callBacks.addChild));
FAULT_CALLBACK((void **)&(parser->callBacks.endXMLStructure));
FAULT_CALLBACK((void **)&(parser->callBacks.resolveExternalEntity));
FAULT_CALLBACK((void **)&(parser->callBacks.handleError));
if (context) {
parser->context = *context;
if (parser->context.info && parser->context.retain) {
parser->context.retain(parser->context.info);
}
} else {
parser->context.version = 0;
parser->context.info = NULL;
parser->context.retain = NULL;
parser->context.release = NULL;
parser->context.copyDescription = NULL;
}
parser->status = kCFXMLStatusParseNotBegun;
parser->errorString = NULL;
} else {
if (parser) CFRelease(parser);
if (node) CFRelease(node);
parser = NULL;
}
return parser;
}
CFXMLParserRef CFXMLParserCreate(CFAllocatorRef allocator, CFDataRef xmlData, CFURLRef dataSource, CFOptionFlags parseOptions, CFIndex versionOfNodes, CFXMLParserCallBacks *callBacks, CFXMLParserContext *context) {
CFAssert1(xmlData != NULL, __kCFLogAssertion, "%s(): NULL data not permitted", __PRETTY_FUNCTION__);
__CFGenericValidateType(xmlData, CFDataGetTypeID());
CFAssert1(dataSource == NULL || CFGetTypeID(dataSource) == CFURLGetTypeID(), __kCFLogAssertion, "%s(): dataSource is not a valid CFURL", __PRETTY_FUNCTION__);
CFAssert1(callBacks != NULL && callBacks->createXMLStructure != NULL && callBacks->addChild != NULL && callBacks->endXMLStructure != NULL, __kCFLogAssertion, "%s(): callbacks createXMLStructure, addChild, and endXMLStructure must all be non-NULL", __PRETTY_FUNCTION__);
CFAssert2(versionOfNodes <= 1, __kCFLogAssertion, "%s(): version number %ld is higher than supported by CFXMLParser", __PRETTY_FUNCTION__, versionOfNodes);
CFAssert1(versionOfNodes != 0, __kCFLogAssertion, "%s(): version number 0 is no longer supported by CFXMLParser", __PRETTY_FUNCTION__);
return __CFXMLParserInit(allocator, dataSource, parseOptions, xmlData, versionOfNodes, callBacks, context);
}
CFXMLParserRef CFXMLParserCreateWithDataFromURL(CFAllocatorRef allocator, CFURLRef dataSource, CFOptionFlags parseOptions, CFIndex versionOfNodes, CFXMLParserCallBacks *callBacks, CFXMLParserContext *context) {
CFAssert1(dataSource == NULL || CFGetTypeID(dataSource) == CFURLGetTypeID(), __kCFLogAssertion, "%s(): dataSource is not a valid CFURL", __PRETTY_FUNCTION__);
CFAssert1(callBacks != NULL && callBacks->createXMLStructure != NULL && callBacks->addChild != NULL && callBacks->endXMLStructure != NULL, __kCFLogAssertion, "%s(): callbacks createXMLStructure, addChild, and endXMLStructure must all be non-NULL", __PRETTY_FUNCTION__);
CFAssert2(versionOfNodes <= 1, __kCFLogAssertion, "%s(): version number %ld is higher than supported by CFXMLParser", __PRETTY_FUNCTION__, versionOfNodes);
CFAssert1(versionOfNodes != 0, __kCFLogAssertion, "%s(): version number 0 is no longer supported by CFXMLParser", __PRETTY_FUNCTION__);
return __CFXMLParserInit(allocator, dataSource, parseOptions, NULL, versionOfNodes, callBacks, context);
}
Boolean CFXMLParserParse(CFXMLParserRef parser) {
CFXMLDocumentInfo docData;
__CFGenericValidateType(parser, CFXMLParserGetTypeID());
if (parser->status != kCFXMLStatusParseNotBegun) return false;
parser->status = kCFXMLStatusParseInProgress;
if (!_openInputStream(&parser->input)) {
if (!parser->input.data) {
// couldn't load URL
parser->status = kCFXMLErrorNoData;
parser->errorString = CFStringCreateWithFormat(CFGetAllocator(parser), NULL, CFSTR("No data found at %@"), CFURLGetString(parser->input.url));
} else {
// couldn't figure out the encoding
CFAssert(parser->input.encoding == kCFStringEncodingInvalidId, __kCFLogAssertion, "CFXMLParser internal error: input stream could not be opened");
parser->status = kCFXMLErrorUnknownEncoding;
parser->errorString = CFStringCreateWithCString(CFGetAllocator(parser), "Encountered unknown encoding", kCFStringEncodingASCII);
}
if (parser->callBacks.handleError) {
INVOKE_CALLBACK3(parser->callBacks.handleError, parser, parser->status, parser->context.info);
}
return false;
}
// Create the document
parser->stack = (void **)CFAllocatorAllocate(CFGetAllocator(parser), 16 * sizeof(void *), 0);
parser->capacity = 16;
parser->node->dataTypeID = kCFXMLNodeTypeDocument;
docData.encoding = _inputStreamGetEncoding(&parser->input);
docData.sourceURL = parser->input.url;
parser->node->additionalData = &docData;
parser->stack[0] = (void *)INVOKE_CALLBACK3(parser->callBacks.createXMLStructure, parser, parser->node, parser->context.info);
parser->top = parser->stack;
parser->node->additionalData = NULL;
// Client may have called CFXMLParserAbort() during any callback, so we must always check to see if we have an error status after a callback
if (parser->status != kCFXMLStatusParseInProgress) {
_CFReportError(parser, parser->status, NULL);
return false;
}
return parseXML(parser);
}
/* The next several functions are all intended to parse past a particular XML structure. They expect parser->curr to be set to the first content character of their structure (e.g. parseXMLComment expects parser->curr to be set just past "<!--"). They parse to the end of their structure, calling any necessary callbacks along the way, and advancing parser->curr as they go. They either return void (not possible for the parse to fail) or they return a Boolean (success/failure). The calling routines are expected to catch returned Booleans and fail immediately if false is returned. */
// [3] S ::= (#x20 | #x9 | #xD | #xA)+
static Boolean parseWhitespace(CFXMLParserRef parser) {
CFIndex len;
Boolean report = !(parser->options & kCFXMLParserSkipWhitespace);
len = _inputStreamSkipWhitespace(&parser->input, report ? (CFMutableStringRef)(parser->node->dataString) : NULL);
if (report && len) {
parser->node->dataTypeID = kCFXMLNodeTypeWhitespace;
parser->node->additionalData = NULL;
return reportNewLeaf(parser);
} else {
return true;
}
}
// parser should be just past "<!--"
static Boolean parseComment(CFXMLParserRef parser, Boolean report) {
const UniChar dashes[2] = {'-', '-'};
UniChar ch;
report = report && (!(parser->options & kCFXMLParserSkipMetaData));
if (!_inputStreamScanToCharacters(&parser->input, dashes, 2, report ? (CFMutableStringRef)(parser->node->dataString) : NULL) || !_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF,"Found unexpected EOF while parsing comment");
return false;
} else if (ch != '>') {
_CFReportError(parser, kCFXMLErrorMalformedComment, "Found \"--\" within a comment");
return false;
} else if (report) {
parser->node->dataTypeID = kCFXMLNodeTypeComment;
parser->node->additionalData = NULL;
return reportNewLeaf(parser);
} else {
return true;
}
}
/*
[16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
[17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
*/
// parser should be set to the first character after "<?"
static Boolean parseProcessingInstruction(CFXMLParserRef parser, Boolean report) {
const UniChar piTermination[2] = {'?', '>'};
CFMutableStringRef str;
CFStringRef name;
if (!_inputStreamScanXMLName(&parser->input, false, &name)) {
_CFReportError(parser, kCFXMLErrorMalformedProcessingInstruction, "Found malformed processing instruction");
return false;
}
_inputStreamSkipWhitespace(&parser->input, NULL);
str = (report && *parser->top) ? CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser)) : NULL;
if (!_inputStreamScanToCharacters(&parser->input, piTermination, 2, str)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing processing instruction");
if (str) CFRelease(str);
return false;
}
if (str) {
CFXMLProcessingInstructionInfo data;
Boolean result;
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeProcessingInstruction;
parser->node->dataString = name;
data.dataString = str;
parser->node->additionalData = &data;
result = reportNewLeaf(parser);
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
CFRelease(str);
return result;
} else {
return true;
}
}
/*
[28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
*/
static const UniChar _DoctypeOpening[7] = {'D', 'O', 'C', 'T', 'Y', 'P', 'E'};
// first character should be immediately after the "<!"
static Boolean parseDTD(CFXMLParserRef parser) {
UniChar ch;
Boolean success, hasExtID = false;
CFXMLDocumentTypeInfo docData = {{NULL, NULL}};
void *dtdStructure = NULL;
CFStringRef name;
// First pass "DOCTYPE"
success = _inputStreamMatchString(&parser->input, _DoctypeOpening, 7);
success = success && _inputStreamSkipWhitespace(&parser->input, NULL) != 0;
success = success && _inputStreamScanXMLName(&parser->input, false, &name);
if (success) {
_inputStreamSkipWhitespace(&parser->input, NULL);
success = _inputStreamPeekCharacter(&parser->input, &ch);
} else {
// didn't make it past "DOCTYPE" successfully.
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found malformed DTD");
return false;
}
if (success && ch != '[' && ch != '>') {
// ExternalID
hasExtID = true;
success = parseExternalID(parser, false, &(docData.externalID));
if (success) {
_inputStreamSkipWhitespace(&parser->input, NULL);
success = _inputStreamPeekCharacter(&parser->input, &ch);
}
}
if (!(parser->options & kCFXMLParserSkipMetaData) && *(parser->top)) {
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeDocumentType;
parser->node->dataString = name;
parser->node->additionalData = &docData;
dtdStructure = (void *)INVOKE_CALLBACK3(parser->callBacks.createXMLStructure, parser, parser->node, parser->context.info);
if (dtdStructure && parser->status == kCFXMLStatusParseInProgress) {
INVOKE_CALLBACK4(parser->callBacks.addChild, parser, *parser->top, dtdStructure, parser->context.info);
}
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
if (parser->status != kCFXMLStatusParseInProgress) {
// callback called CFXMLParserAbort()
_CFReportError(parser, parser->status, NULL);
return false;
}
} else {
dtdStructure = NULL;
}
if (docData.externalID.publicID) CFRelease(docData.externalID.publicID);
if (docData.externalID.systemID) CFRelease(docData.externalID.systemID);
pushXMLNode(parser, dtdStructure);
if (success && ch == '[') {
// inline DTD
_inputStreamGetCharacter(&parser->input, &ch);
if (!parseInlineDTD(parser)) return false;
_inputStreamSkipWhitespace(&parser->input, NULL);
success = _inputStreamGetCharacter(&parser->input, &ch) && ch == '>';
} else if (success && ch == '>') {
// End of the DTD
_inputStreamGetCharacter(&parser->input, &ch);
}
if (!success) {
if (_inputStreamAtEOF(&parser->input)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Encountered unexpected EOF while parsing DTD");
} else {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found malformed DTD");
}
return false;
}
parser->top --; // Remove dtdStructure from the stack
if (success && dtdStructure) {
INVOKE_CALLBACK3(parser->callBacks.endXMLStructure, parser, dtdStructure, parser->context.info);
if (parser->status != kCFXMLStatusParseInProgress) {
_CFReportError(parser, parser->status, NULL);
return false;
}
}
return true;
}
/*
[69] PEReference ::= '%' Name ';'
*/
static Boolean parsePhysicalEntityReference(CFXMLParserRef parser) {
UniChar ch;
CFStringRef name;
if (!_inputStreamScanXMLName(&parser->input, false, &name)) {
_CFReportError(parser, kCFXMLErrorMalformedName, "Found malformed name while parsing physical entity reference");
return false;
} else if (!_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing physical entity reference");
return false;
} else if (ch != ';') {
_CFReportError(parser, kCFXMLErrorMalformedName, "Found malformed name while parsing physical entity reference");
return false;
} else if (!(parser->options & kCFXMLParserSkipMetaData) && *(parser->top)) {
CFXMLEntityReferenceInfo myData;
Boolean result;
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeEntityReference;
parser->node->dataString = name;
myData.entityType = kCFXMLEntityTypeParameter;
parser->node->additionalData = &myData;
result = reportNewLeaf(parser);
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
return result;
} else {
return true;
}
}
/*
[54] AttType ::= StringType | TokenizedType | EnumeratedType
[55] StringType ::= 'CDATA'
[56] TokenizedType ::= 'ID' | 'IDREF'| 'IDREFS'| 'ENTITY'| 'ENTITIES'| 'NMTOKEN'| 'NMTOKENS'
[57] EnumeratedType ::= NotationType | Enumeration
[58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
[59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
*/
static Boolean parseEnumeration(CFXMLParserRef parser, Boolean useNMTokens) {
UniChar ch;
Boolean done = false;
if (!_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
return false;
} else if (ch != '(') {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
return false;
}
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamScanXMLName(&parser->input, useNMTokens, NULL)) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
return false;
}
while (!done) {
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
return false;
} else if (ch == ')') {
done = true;
} else if (ch == '|') {
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamScanXMLName(&parser->input, useNMTokens, NULL)) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
return false;
}
} else {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
return false;
}
}
return true;
}
static Boolean parseAttributeType(CFXMLParserRef parser, CFMutableStringRef str) {
Boolean success = false;
static const UniChar attTypeStrings[6][8] = {
{'C', 'D', 'A', 'T', 'A', '\0', '\0', '\0'},
{'I', 'D', 'R', 'E', 'F', 'S', '\0', '\0'},
{'E', 'N', 'T', 'I', 'T', 'Y', '\0', '\0'},
{'E', 'N', 'T', 'I', 'T', 'I', 'E', 'S'},
{'N', 'M', 'T', 'O', 'K', 'E', 'N', 'S'},
{'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N'} };
if (str) _inputStreamSetMark(&parser->input);
if (_inputStreamMatchString(&parser->input, attTypeStrings[0], 5) ||
_inputStreamMatchString(&parser->input, attTypeStrings[1], 6) ||
_inputStreamMatchString(&parser->input, attTypeStrings[1], 5) ||
_inputStreamMatchString(&parser->input, attTypeStrings[1], 2) ||
_inputStreamMatchString(&parser->input, attTypeStrings[2], 6) ||
_inputStreamMatchString(&parser->input, attTypeStrings[3], 8) ||
_inputStreamMatchString(&parser->input, attTypeStrings[4], 8) ||
_inputStreamMatchString(&parser->input, attTypeStrings[4], 7)) {
success = true;
} else if (_inputStreamMatchString(&parser->input, attTypeStrings[5], 8)) {
// Notation
if (_inputStreamSkipWhitespace(&parser->input, NULL) == 0) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
success = false;
} else {
success = parseEnumeration(parser, false);
}
} else {
success = parseEnumeration(parser, true);
}
if (str) {
if (success) {
_inputStreamGetCharactersFromMark(&parser->input, str);
}
_inputStreamClearMark(&parser->input);
}
return success;
}
/* [60] DefaultDecl ::= '#REQUIRED' | '#IMPLIED' | (('#FIXED' S)? AttValue) */
static Boolean parseAttributeDefaultDeclaration(CFXMLParserRef parser, CFMutableStringRef str) {
const UniChar strings[3][8] = {
{'R', 'E', 'Q', 'U', 'I', 'R', 'E', 'D'},
{'I', 'M', 'P', 'L', 'I', 'E', 'D', '\0'},
{'F', 'I', 'X', 'E', 'D', '\0', '\0', '\0'}};
UniChar ch;
Boolean success;
if (str) _inputStreamSetMark(&parser->input);
if (!_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
success = false;
} else if (ch == '#') {
if (_inputStreamMatchString(&parser->input, strings[0], 8) ||
_inputStreamMatchString(&parser->input, strings[1], 7)) {
success = true;
} else if (!_inputStreamMatchString(&parser->input, strings[2], 5) || _inputStreamSkipWhitespace(&parser->input, NULL) == 0) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
success = false;
} else {
// we fall through if "#FIXED" was matched, and at least one whitespace character was stripped.
success = parseAttributeValue(parser, NULL);
}
} else {
_inputStreamReturnCharacter(&parser->input, ch);
success = parseAttributeValue(parser, NULL);
}
if (str) {
if (success) {
_inputStreamGetCharactersFromMark(&parser->input, str);
}
_inputStreamClearMark(&parser->input);
}
return success;
}
/*
[52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
[53] AttDef ::= S Name S AttType S DefaultDecl
*/
static Boolean parseAttributeListDeclaration(CFXMLParserRef parser) {
const UniChar attList[7] = {'A', 'T', 'T', 'L', 'I', 'S', 'T'};
CFXMLAttributeListDeclarationInfo attListData;
CFXMLAttributeDeclarationInfo attributeArray[8], *attributes=attributeArray;
CFIndex capacity = 8;
UniChar ch;
Boolean success = true;
CFStringRef name;
if (!_inputStreamMatchString(&parser->input, attList, 7) ||
_inputStreamSkipWhitespace(&parser->input, NULL) == 0 ||
!_inputStreamScanXMLName(&parser->input, false, &name)) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
return false;
}
attListData.numberOfAttributes = 0;
if (!(*parser->top) || (parser->options & kCFXMLParserSkipMetaData)) {
// Use this to mark that we don't need to collect attribute information to report to the client. Ultimately, we may want to collect this for our own use (for validation, for instance), but for now, the only reason we would create it would be for the client. -- REW, 2/9/2000
attributes = NULL;
}
while (_inputStreamPeekCharacter(&parser->input, &ch) && ch != '>' && _inputStreamSkipWhitespace(&parser->input, NULL) != 0) {
CFXMLAttributeDeclarationInfo *attribute = NULL;
if (_inputStreamPeekCharacter(&parser->input, &ch) && ch == '>')
break;
if (attributes) {
if (capacity == attListData.numberOfAttributes) {
capacity = 2*capacity;
if (attributes != attributeArray) {
attributes = __CFSafelyReallocateWithAllocator(CFGetAllocator(parser), attributes, capacity * sizeof(CFXMLAttributeDeclarationInfo), 0, NULL);
} else {
attributes = (CFXMLAttributeDeclarationInfo *)CFAllocatorAllocate(CFGetAllocator(parser), capacity * sizeof(CFXMLAttributeDeclarationInfo), 0);
}
}
attribute = &(attributes[attListData.numberOfAttributes]);
// Much better if we can somehow create these strings immutable - then if the client (or we ourselves) has to copy them, they will end up multiply-retained, rather than having a new alloc and data copy performed. -- REW, 2/9/2000
attribute->typeString = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
attribute->defaultString = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
}
if (!_inputStreamScanXMLName(&parser->input, false, &(attribute->attributeName)) || (_inputStreamSkipWhitespace(&parser->input, NULL) == 0)) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
success = false;
break;
}
if (!parseAttributeType(parser, attribute ? (CFMutableStringRef)attribute->typeString : NULL)) {
success = false;
break;
}
if (_inputStreamSkipWhitespace(&parser->input, NULL) == 0) {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
success = false;
break;
}
if (!parseAttributeDefaultDeclaration(parser, attribute ? (CFMutableStringRef)attribute->defaultString : NULL)) {
success = false;
break;
}
attListData.numberOfAttributes ++;
}
if (success) {
if (!_inputStreamGetCharacter(&parser->input, &ch)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
success = false;
} else if (ch != '>') {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
success = false;
} else if (attributes) {
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeAttributeListDeclaration;
parser->node->dataString = name;
attListData.attributes = attributes;
parser->node->additionalData = (void *)&attListData;
success = reportNewLeaf(parser);
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
}
}
if (attributes) {
// Free up all that memory
CFIndex idx;
for (idx = 0; idx < attListData.numberOfAttributes; idx ++) {
// Do not release attributeName here; it's a uniqued string from scanXMLName
CFRelease(attributes[idx].typeString);
CFRelease(attributes[idx].defaultString);
}
if (attributes != attributeArray) {
CFAllocatorDeallocate(CFGetAllocator(parser), attributes);
}
}
return success;
}
CF_INLINE Boolean parseSystemLiteral(CFXMLParserRef parser, CFXMLExternalID *extID) {
Boolean success;
if (extID) {
CFMutableStringRef urlStr = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
if (_inputStreamScanQuotedString(&parser->input, urlStr)) {
success = true;
extID->systemID = CFURLCreateWithString(CFGetAllocator(parser), urlStr, parser->input.url);
} else {
extID->systemID = NULL;
success = false;
}
CFRelease(urlStr);
} else {
success = _inputStreamScanQuotedString(&parser->input, NULL);
}
return success;
}
/*
[75] ExternalID ::= 'SYSTEM' S SystemLiteral | 'PUBLIC' S PubidLiteral S SystemLiteral
[83] PublicID ::= 'PUBLIC' S PubidLiteral
[12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
[13] PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
[11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
*/
// This does NOT report errors itself; caller can check to see if parser->input is at EOF to determine whether the formatting failed or unexpected EOF occurred. -- REW, 2/2/2000
static Boolean parseExternalID(CFXMLParserRef parser, Boolean alsoAcceptPublicID, CFXMLExternalID *extID) {
const UniChar publicString[6] = {'P', 'U', 'B', 'L', 'I', 'C'};
const UniChar systemString[6] = {'S', 'Y', 'S', 'T', 'E', 'M'};
Boolean success;
if (extID) {
extID->systemID = NULL;
extID->publicID = NULL;
}
if (_inputStreamMatchString(&parser->input, publicString, 6)) {
success = _inputStreamSkipWhitespace(&parser->input, NULL) != 0;
if (extID) {
extID->publicID = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
success = success && _inputStreamScanQuotedString(&parser->input, (CFMutableStringRef)extID->publicID);
} else {
success = success && _inputStreamScanQuotedString(&parser->input, NULL);
}
if (success) {
UniChar ch;
if (alsoAcceptPublicID) {
_inputStreamSetMark(&parser->input); // In case we need to roll back the parser
}
if (_inputStreamSkipWhitespace(&parser->input, NULL) == 0
|| !_inputStreamPeekCharacter(&parser->input, &ch)
|| (ch != '\'' && ch != '\"')
|| !parseSystemLiteral(parser, extID)) {
success = alsoAcceptPublicID;
if (alsoAcceptPublicID) {
_inputStreamBackUpToMark(&parser->input);
}
} else {
success = true;
}
if (alsoAcceptPublicID) {
_inputStreamClearMark(&parser->input);
}
}
} else if (_inputStreamMatchString(&parser->input, systemString, 6)) {
success = _inputStreamSkipWhitespace(&parser->input, NULL) != 0 && parseSystemLiteral(parser, extID);
} else {
success = false;
}
return success;
}
/*
[82] NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
*/
static Boolean parseNotationDeclaration(CFXMLParserRef parser) {
static UniChar const notationString[8] = {'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N'};
Boolean report = *(parser->top) && !(parser->options & kCFXMLParserSkipMetaData);
CFXMLNotationInfo notationData = {{NULL, NULL}};
CFStringRef name;
Boolean success =
_inputStreamMatchString(&parser->input, notationString, 8) &&
_inputStreamSkipWhitespace(&parser->input, NULL) != 0 &&
_inputStreamScanXMLName(&parser->input, false, report ? &name : NULL) &&
_inputStreamSkipWhitespace(&parser->input, NULL) != 0 &&
parseExternalID(parser, true, report ? &(notationData.externalID) : NULL);
if (success) {
UniChar ch;
_inputStreamSkipWhitespace(&parser->input, NULL);
success = (_inputStreamGetCharacter(&parser->input, &ch) && ch == '>');
}
if (!success) {
if (_inputStreamAtEOF(&parser->input)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
} else {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
}
} else if (report) {
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeNotation;
parser->node->dataString = name;
parser->node->additionalData = ¬ationData;
success = reportNewLeaf(parser);
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
}
if (notationData.externalID.systemID) CFRelease(notationData.externalID.systemID);
if (notationData.externalID.publicID) CFRelease(notationData.externalID.publicID);
return success;
}
/*
[48] cp ::= (Name | choice | seq) ('?' | '*' | '+')?
[49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')'
[50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
*/
static Boolean parseChoiceOrSequence(CFXMLParserRef parser, Boolean pastParen) {
UniChar ch, separator;
if (!pastParen) {
if (!_inputStreamGetCharacter(&parser->input, &ch) || ch != '(') return false;
_inputStreamSkipWhitespace(&parser->input, NULL);
}
if (!_inputStreamPeekCharacter(&parser->input, &ch)) return false;
/* Now scanning cp, production [48] */
if (ch == '(') {
if (!parseChoiceOrSequence(parser, false)) return false;
} else {
if (!_inputStreamScanXMLName(&parser->input, false, NULL)) return false;
}
if (!_inputStreamPeekCharacter(&parser->input, &ch)) return false;
if (ch == '?' || ch == '*' || ch == '+') _inputStreamGetCharacter(&parser->input, &ch);
/* Now past cp */
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamGetCharacter(&parser->input, &ch)) return false;
if (ch == ')') return true;
if (ch != '|' && ch != ',') return false;
separator = ch;
while (ch == separator) {
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamPeekCharacter(&parser->input, &ch)) return false;
if (ch != '(') {
if (!_inputStreamScanXMLName(&parser->input, false, NULL)) return false;
} else if (!parseChoiceOrSequence(parser, false)) {
return false;
}
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamGetCharacter(&parser->input, &ch)) return false;
}
return ch == ')';
}
/*
[51] Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' | '(' S? '#PCDATA' S? ')'
*/
static Boolean parseMixedElementContent(CFXMLParserRef parser) {
static const UniChar pcdataString[7] = {'#', 'P', 'C', 'D', 'A', 'T', 'A'};
UniChar ch;
if (!_inputStreamMatchString(&parser->input, pcdataString, 7)) return false;
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamGetCharacter(&parser->input, &ch) && (ch == ')' || ch == '|')) return false;
if (ch == ')') return true;
while (ch == '|') {
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamScanXMLName(&parser->input, false, NULL)) return false;
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamGetCharacter(&parser->input, &ch)) return false;
}
if (ch != ')') return false;
if (!_inputStreamGetCharacter(&parser->input, &ch) || ch != '*') return false;
return true;
}
/*
[46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
[47] children ::= (choice | seq) ('?' | '*' | '+')?
*/
static Boolean parseElementContentSpec(CFXMLParserRef parser) {
static const UniChar eltContentEmpty[5] = {'E', 'M', 'P', 'T', 'Y'};
static const UniChar eltContentAny[3] = {'A', 'N', 'Y'};
UniChar ch;
if (_inputStreamMatchString(&parser->input, eltContentEmpty, 5) || _inputStreamMatchString(&parser->input, eltContentAny, 3)) {
return true;
} else if (!_inputStreamPeekCharacter(&parser->input, &ch) || ch != '(') {
return false;
} else {
// We want to know if we have a Mixed per production [51]. If we don't, we will need to back up and call the parseChoiceOrSequence function. So we set the mark now. -- REW, 2/10/2000
_inputStreamGetCharacter(&parser->input, &ch);
_inputStreamSkipWhitespace(&parser->input, NULL);
if (!_inputStreamPeekCharacter(&parser->input, &ch)) return false;
if (ch == '#') {
// Mixed
return parseMixedElementContent(parser);
} else {
if (parseChoiceOrSequence(parser, true)) {
if (_inputStreamPeekCharacter(&parser->input, &ch) && (ch == '*' || ch == '?' || ch == '+')) {
_inputStreamGetCharacter(&parser->input, &ch);
}
return true;
} else {
return false;
}
}
}
}
/*
[45] elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
*/
static Boolean parseElementDeclaration(CFXMLParserRef parser) {
Boolean report = *(parser->top) && !(parser->options & kCFXMLParserSkipMetaData);
Boolean success;
static const UniChar eltChars[7] = {'E', 'L', 'E', 'M', 'E', 'N', 'T'};
UniChar ch = '>';
CFMutableStringRef contentDesc = NULL;
CFStringRef name;
success = _inputStreamMatchString(&parser->input, eltChars, 7)
&& _inputStreamSkipWhitespace(&parser->input, NULL) != 0
&& _inputStreamScanXMLName(&parser->input, false, report ? &name : NULL)
&& _inputStreamSkipWhitespace(&parser->input, NULL) != 0;
if (success) {
if (report) _inputStreamSetMark(&parser->input);
success = parseElementContentSpec(parser);
if (success && report) {
contentDesc = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
_inputStreamGetCharactersFromMark(&parser->input, contentDesc);
}
if (report) _inputStreamClearMark(&parser->input);
if (success) _inputStreamSkipWhitespace(&parser->input, NULL);
success = success && _inputStreamMatchString(&parser->input, &ch, 1);
}
if (!success) {
if (_inputStreamAtEOF(&parser->input)) {
_CFReportError(parser, kCFXMLErrorUnexpectedEOF, "Found unexpected EOF while parsing inline DTD");
} else {
_CFReportError(parser, kCFXMLErrorMalformedDTD, "Found unexpected character while parsing inline DTD");
}
} else if (report) {
CFXMLElementTypeDeclarationInfo eltData;
CFStringRef tmp = parser->node->dataString;
parser->node->dataTypeID = kCFXMLNodeTypeElementTypeDeclaration;
parser->node->dataString = name;
eltData.contentDescription = contentDesc;
parser->node->additionalData = &eltData;
success = reportNewLeaf(parser);
parser->node->additionalData = NULL;
parser->node->dataString = tmp;
}
if (contentDesc) CFRelease(contentDesc);
return success;
}
/*
[70] EntityDecl ::= GEDecl | PEDecl
[71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'
[72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'
[73] EntityDef ::= EntityValue | (ExternalID NDataDecl?)
[74] PEDef ::= EntityValue | ExternalID
[76] NDataDecl ::= S 'NDATA' S Name
[9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | "'" ([^%&'] | PEReference | Reference)* "'"
*/
static Boolean parseEntityDeclaration(CFXMLParserRef parser) {
const UniChar entityStr[6] = {'E', 'N', 'T', 'I', 'T', 'Y'};
UniChar ch;
Boolean isPEDecl = false;
CFXMLEntityInfo entityData;
CFStringRef name = NULL;
Boolean report = *(parser->top) && !(parser->options & kCFXMLParserSkipMetaData);
Boolean success =
_inputStreamMatchString(&parser->input, entityStr, 6) &&
(_inputStreamSkipWhitespace(&parser->input, NULL) != 0) &&
_inputStreamPeekCharacter(&parser->input, &ch);
entityData.replacementText = NULL;
entityData.entityID.publicID = NULL;
entityData.entityID.systemID = NULL;
entityData.notationName = NULL;
// We will set entityType immediately before reporting
if (success && ch == '%') {
_inputStreamGetCharacter(&parser->input, &ch);
success = _inputStreamSkipWhitespace(&parser->input, NULL) != 0;
isPEDecl = true;
}
success = success && _inputStreamScanXMLName(&parser->input, false, report ? &name : NULL) && (_inputStreamSkipWhitespace(&parser->input, NULL) != 0) && _inputStreamPeekCharacter(&parser->input, &ch);
if (success && (ch == '\"' || ch == '\'')) {
// EntityValue
// This is not quite correct - the string scanned cannot contain '%' or '&' unless it's as part of a valid entity reference -- REW, 2/2/2000
if (report) {
entityData.replacementText = CFStringCreateMutableWithExternalCharactersNoCopy(CFGetAllocator(parser), NULL, 0, 0, CFGetAllocator(parser));
success = _inputStreamScanQuotedString(&parser->input, (CFMutableStringRef)entityData.replacementText);
} else {
success = _inputStreamScanQuotedString(&parser->input, NULL);
}
} else if (success) {
// ExternalID
success = parseExternalID(parser, false, report ? &(entityData.entityID) : NULL);
if (success && !isPEDecl && _inputStreamSkipWhitespace(&parser->input, NULL) != 0) {
// There could be an option NDataDecl
// Don't we need to set entityData.notationName? -- REW, 3/6/2000
const UniChar nDataStr[5] = {'N', 'D', 'A', 'T', 'A'};
if (_inputStreamMatchString(&parser->input, nDataStr, 5)) {
success = (_inputStreamSkipWhitespace(&parser->input, NULL) != 0) && _inputStreamScanXMLName(&parser->input, false, NULL);