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SAX2.c
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/*
* SAX2.c : Default SAX2 handler to build a tree.
*
* See Copyright for the status of this software.
*
* Daniel Veillard <daniel@veillard.com>
*/
#define IN_LIBXML
#include "libxml.h"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <stddef.h>
#include <libxml/SAX2.h>
#include <libxml/xmlmemory.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/valid.h>
#include <libxml/entities.h>
#include <libxml/xmlerror.h>
#include <libxml/debugXML.h>
#include <libxml/xmlIO.h>
#include <libxml/uri.h>
#include <libxml/valid.h>
#include <libxml/HTMLtree.h>
#include "private/error.h"
#include "private/parser.h"
#include "private/tree.h"
/*
* xmlSAX2ErrMemory:
* @ctxt: an XML validation parser context
* @msg: a string to accompany the error message
*/
static void
xmlSAX2ErrMemory(xmlParserCtxtPtr ctxt) {
xmlCtxtErrMemory(ctxt);
}
/**
* xmlValidError:
* @ctxt: an XML validation parser context
* @error: the error number
* @msg: the error message
* @str1: extra data
* @str2: extra data
*
* Handle a validation error
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlErrValid(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_DTD, error, XML_ERR_ERROR,
str1, str2, NULL, 0, msg, str1, str2);
if (ctxt != NULL)
ctxt->valid = 0;
}
/**
* xmlFatalErrMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an error string
* @str2: an error string
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
str1, str2, NULL, 0, msg, str1, str2);
}
/**
* xmlWarnMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an error string
* @str2: an error string
*
* Handle a parser warning
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlWarnMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_WARNING,
str1, NULL, NULL, 0, msg, str1);
}
/**
* xmlNsWarnMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an error string
*
* Handle a namespace warning
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsWarnMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_NAMESPACE, error, XML_ERR_WARNING,
str1, str2, NULL, 0, msg, str1, str2);
}
/**
* xmlSAX2GetPublicId:
* @ctx: the user data (XML parser context)
*
* Provides the public ID e.g. "-//SGMLSOURCE//DTD DEMO//EN"
*
* Returns a xmlChar *
*/
const xmlChar *
xmlSAX2GetPublicId(void *ctx ATTRIBUTE_UNUSED)
{
/* xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; */
return(NULL);
}
/**
* xmlSAX2GetSystemId:
* @ctx: the user data (XML parser context)
*
* Provides the system ID, basically URL or filename e.g.
* http://www.sgmlsource.com/dtds/memo.dtd
*
* Returns a xmlChar *
*/
const xmlChar *
xmlSAX2GetSystemId(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctx == NULL) || (ctxt->input == NULL)) return(NULL);
return((const xmlChar *) ctxt->input->filename);
}
/**
* xmlSAX2GetLineNumber:
* @ctx: the user data (XML parser context)
*
* Provide the line number of the current parsing point.
*
* Returns an int
*/
int
xmlSAX2GetLineNumber(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctx == NULL) || (ctxt->input == NULL)) return(0);
return(ctxt->input->line);
}
/**
* xmlSAX2GetColumnNumber:
* @ctx: the user data (XML parser context)
*
* Provide the column number of the current parsing point.
*
* Returns an int
*/
int
xmlSAX2GetColumnNumber(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctx == NULL) || (ctxt->input == NULL)) return(0);
return(ctxt->input->col);
}
/**
* xmlSAX2IsStandalone:
* @ctx: the user data (XML parser context)
*
* Is this document tagged standalone ?
*
* Returns 1 if true
*/
int
xmlSAX2IsStandalone(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctx == NULL) || (ctxt->myDoc == NULL)) return(0);
return(ctxt->myDoc->standalone == 1);
}
/**
* xmlSAX2HasInternalSubset:
* @ctx: the user data (XML parser context)
*
* Does this document has an internal subset
*
* Returns 1 if true
*/
int
xmlSAX2HasInternalSubset(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctxt == NULL) || (ctxt->myDoc == NULL)) return(0);
return(ctxt->myDoc->intSubset != NULL);
}
/**
* xmlSAX2HasExternalSubset:
* @ctx: the user data (XML parser context)
*
* Does this document has an external subset
*
* Returns 1 if true
*/
int
xmlSAX2HasExternalSubset(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if ((ctxt == NULL) || (ctxt->myDoc == NULL)) return(0);
return(ctxt->myDoc->extSubset != NULL);
}
/**
* xmlSAX2InternalSubset:
* @ctx: the user data (XML parser context)
* @name: the root element name
* @ExternalID: the external ID
* @SystemID: the SYSTEM ID (e.g. filename or URL)
*
* Callback on internal subset declaration.
*/
void
xmlSAX2InternalSubset(void *ctx, const xmlChar *name,
const xmlChar *ExternalID, const xmlChar *SystemID)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlDtdPtr dtd;
if (ctx == NULL) return;
if (ctxt->myDoc == NULL)
return;
if ((ctxt->html) && (ctxt->instate != XML_PARSER_MISC))
return;
dtd = xmlGetIntSubset(ctxt->myDoc);
if (dtd != NULL) {
xmlUnlinkNode((xmlNodePtr) dtd);
xmlFreeDtd(dtd);
ctxt->myDoc->intSubset = NULL;
}
ctxt->myDoc->intSubset =
xmlCreateIntSubset(ctxt->myDoc, name, ExternalID, SystemID);
if (ctxt->myDoc->intSubset == NULL)
xmlSAX2ErrMemory(ctxt);
}
/**
* xmlSAX2ExternalSubset:
* @ctx: the user data (XML parser context)
* @name: the root element name
* @ExternalID: the external ID
* @SystemID: the SYSTEM ID (e.g. filename or URL)
*
* Callback on external subset declaration.
*/
void
xmlSAX2ExternalSubset(void *ctx, const xmlChar *name,
const xmlChar *ExternalID, const xmlChar *SystemID)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
if (ctx == NULL) return;
if ((SystemID != NULL) &&
((ctxt->options & XML_PARSE_NO_XXE) == 0) &&
(((ctxt->validate) || (ctxt->loadsubset)) &&
(ctxt->wellFormed && ctxt->myDoc))) {
/*
* Try to fetch and parse the external subset.
*/
xmlParserInputPtr oldinput;
int oldinputNr;
int oldinputMax;
xmlParserInputPtr *oldinputTab;
xmlParserInputPtr input = NULL;
const xmlChar *oldencoding;
unsigned long consumed;
size_t buffered;
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
int inputMax = 1;
#else
int inputMax = 5;
#endif
/*
* Ask the Entity resolver to load the damn thing
*/
if ((ctxt->sax != NULL) && (ctxt->sax->resolveEntity != NULL))
input = ctxt->sax->resolveEntity(ctxt->userData, ExternalID,
SystemID);
if (input == NULL) {
return;
}
if (xmlNewDtd(ctxt->myDoc, name, ExternalID, SystemID) == NULL) {
xmlSAX2ErrMemory(ctxt);
xmlFreeInputStream(input);
return;
}
/*
* make sure we won't destroy the main document context
*/
oldinput = ctxt->input;
oldinputNr = ctxt->inputNr;
oldinputMax = ctxt->inputMax;
oldinputTab = ctxt->inputTab;
oldencoding = ctxt->encoding;
ctxt->encoding = NULL;
ctxt->inputTab = xmlMalloc(inputMax * sizeof(xmlParserInputPtr));
if (ctxt->inputTab == NULL) {
xmlSAX2ErrMemory(ctxt);
goto error;
}
ctxt->inputNr = 0;
ctxt->inputMax = inputMax;
ctxt->input = NULL;
if (xmlCtxtPushInput(ctxt, input) < 0)
goto error;
if (input->filename == NULL)
input->filename = (char *) xmlCanonicPath(SystemID);
input->line = 1;
input->col = 1;
input->base = ctxt->input->cur;
input->cur = ctxt->input->cur;
input->free = NULL;
/*
* let's parse that entity knowing it's an external subset.
*/
xmlParseExternalSubset(ctxt, ExternalID, SystemID);
/*
* Free up the external entities
*/
while (ctxt->inputNr > 1)
xmlFreeInputStream(xmlCtxtPopInput(ctxt));
consumed = ctxt->input->consumed;
buffered = ctxt->input->cur - ctxt->input->base;
if (buffered > ULONG_MAX - consumed)
consumed = ULONG_MAX;
else
consumed += buffered;
if (consumed > ULONG_MAX - ctxt->sizeentities)
ctxt->sizeentities = ULONG_MAX;
else
ctxt->sizeentities += consumed;
error:
xmlFreeInputStream(input);
xmlFree(ctxt->inputTab);
/*
* Restore the parsing context of the main entity
*/
ctxt->input = oldinput;
ctxt->inputNr = oldinputNr;
ctxt->inputMax = oldinputMax;
ctxt->inputTab = oldinputTab;
if ((ctxt->encoding != NULL) &&
((ctxt->dict == NULL) ||
(!xmlDictOwns(ctxt->dict, ctxt->encoding))))
xmlFree((xmlChar *) ctxt->encoding);
ctxt->encoding = oldencoding;
/* ctxt->wellFormed = oldwellFormed; */
}
}
/**
* xmlSAX2ResolveEntity:
* @ctx: the user data (XML parser context)
* @publicId: The public ID of the entity
* @systemId: The system ID of the entity
*
* This is only used to load DTDs. The preferred way to install
* custom resolvers is xmlCtxtSetResourceLoader.
*
* Returns a parser input.
*/
xmlParserInputPtr
xmlSAX2ResolveEntity(void *ctx, const xmlChar *publicId,
const xmlChar *systemId)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlParserInputPtr ret = NULL;
xmlChar *URI = NULL;
if (ctx == NULL) return(NULL);
if (systemId != NULL) {
const xmlChar *base = NULL;
int res;
if (ctxt->input != NULL)
base = BAD_CAST ctxt->input->filename;
/*
* We don't really need the 'directory' struct member, but some
* users set it manually to a base URI for memory streams.
*/
if (base == NULL)
base = BAD_CAST ctxt->directory;
if ((xmlStrlen(systemId) > XML_MAX_URI_LENGTH) ||
(xmlStrlen(base) > XML_MAX_URI_LENGTH)) {
xmlFatalErr(ctxt, XML_ERR_RESOURCE_LIMIT, "URI too long");
return(NULL);
}
res = xmlBuildURISafe(systemId, base, &URI);
if (URI == NULL) {
if (res < 0)
xmlSAX2ErrMemory(ctxt);
else
xmlWarnMsg(ctxt, XML_ERR_INVALID_URI,
"Can't resolve URI: %s\n", systemId);
return(NULL);
}
if (xmlStrlen(URI) > XML_MAX_URI_LENGTH) {
xmlFatalErr(ctxt, XML_ERR_RESOURCE_LIMIT, "URI too long");
xmlFree(URI);
return(NULL);
}
}
ret = xmlLoadResource(ctxt, (const char *) URI,
(const char *) publicId, XML_RESOURCE_DTD);
xmlFree(URI);
return(ret);
}
/**
* xmlSAX2GetEntity:
* @ctx: the user data (XML parser context)
* @name: The entity name
*
* Get an entity by name
*
* Returns the xmlEntityPtr if found.
*/
xmlEntityPtr
xmlSAX2GetEntity(void *ctx, const xmlChar *name)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlEntityPtr ret = NULL;
if (ctx == NULL) return(NULL);
if (ctxt->inSubset == 0) {
ret = xmlGetPredefinedEntity(name);
if (ret != NULL)
return(ret);
}
if ((ctxt->myDoc != NULL) && (ctxt->myDoc->standalone == 1)) {
if (ctxt->inSubset == 2) {
ctxt->myDoc->standalone = 0;
ret = xmlGetDocEntity(ctxt->myDoc, name);
ctxt->myDoc->standalone = 1;
} else {
ret = xmlGetDocEntity(ctxt->myDoc, name);
if (ret == NULL) {
ctxt->myDoc->standalone = 0;
ret = xmlGetDocEntity(ctxt->myDoc, name);
if (ret != NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NOT_STANDALONE,
"Entity(%s) document marked standalone but requires external subset\n",
name, NULL);
}
ctxt->myDoc->standalone = 1;
}
}
} else {
ret = xmlGetDocEntity(ctxt->myDoc, name);
}
return(ret);
}
/**
* xmlSAX2GetParameterEntity:
* @ctx: the user data (XML parser context)
* @name: The entity name
*
* Get a parameter entity by name
*
* Returns the xmlEntityPtr if found.
*/
xmlEntityPtr
xmlSAX2GetParameterEntity(void *ctx, const xmlChar *name)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlEntityPtr ret;
if (ctx == NULL) return(NULL);
ret = xmlGetParameterEntity(ctxt->myDoc, name);
return(ret);
}
/**
* xmlSAX2EntityDecl:
* @ctx: the user data (XML parser context)
* @name: the entity name
* @type: the entity type
* @publicId: The public ID of the entity
* @systemId: The system ID of the entity
* @content: the entity value (without processing).
*
* An entity definition has been parsed
*/
void
xmlSAX2EntityDecl(void *ctx, const xmlChar *name, int type,
const xmlChar *publicId, const xmlChar *systemId, xmlChar *content)
{
xmlEntityPtr ent;
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
int extSubset;
int res;
if ((ctxt == NULL) || (ctxt->myDoc == NULL))
return;
extSubset = ctxt->inSubset == 2;
res = xmlAddEntity(ctxt->myDoc, extSubset, name, type, publicId, systemId,
content, &ent);
switch (res) {
case XML_ERR_OK:
break;
case XML_ERR_NO_MEMORY:
xmlSAX2ErrMemory(ctxt);
return;
case XML_WAR_ENTITY_REDEFINED:
if (ctxt->pedantic) {
if (extSubset)
xmlWarnMsg(ctxt, res, "Entity(%s) already defined in the"
" external subset\n", name);
else
xmlWarnMsg(ctxt, res, "Entity(%s) already defined in the"
" internal subset\n", name);
}
return;
case XML_ERR_REDECL_PREDEF_ENTITY:
/*
* Technically an error but it's a common mistake to get double
* escaping according to "4.6 Predefined Entities" wrong.
*/
xmlWarnMsg(ctxt, res, "Invalid redeclaration of predefined"
" entity '%s'", name);
return;
default:
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
"Unexpected error code from xmlAddEntity\n",
NULL, NULL);
return;
}
if ((ent->URI == NULL) && (systemId != NULL)) {
xmlChar *URI;
const char *base = NULL;
int i;
for (i = ctxt->inputNr - 1; i >= 0; i--) {
if (ctxt->inputTab[i]->filename != NULL) {
base = ctxt->inputTab[i]->filename;
break;
}
}
/*
* We don't really need the 'directory' struct member, but some
* users set it manually to a base URI for memory streams.
*/
if (base == NULL)
base = ctxt->directory;
res = xmlBuildURISafe(systemId, (const xmlChar *) base, &URI);
if (URI == NULL) {
if (res < 0) {
xmlSAX2ErrMemory(ctxt);
} else {
xmlWarnMsg(ctxt, XML_ERR_INVALID_URI,
"Can't resolve URI: %s\n", systemId);
}
} else if (xmlStrlen(URI) > XML_MAX_URI_LENGTH) {
xmlFatalErr(ctxt, XML_ERR_RESOURCE_LIMIT, "URI too long");
xmlFree(URI);
} else {
ent->URI = URI;
}
}
}
/**
* xmlSAX2AttributeDecl:
* @ctx: the user data (XML parser context)
* @elem: the name of the element
* @fullname: the attribute name
* @type: the attribute type
* @def: the type of default value
* @defaultValue: the attribute default value
* @tree: the tree of enumerated value set
*
* An attribute definition has been parsed
*/
void
xmlSAX2AttributeDecl(void *ctx, const xmlChar *elem, const xmlChar *fullname,
int type, int def, const xmlChar *defaultValue,
xmlEnumerationPtr tree)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlAttributePtr attr;
const xmlChar *name = NULL;
xmlChar *prefix = NULL;
/* Avoid unused variable warning if features are disabled. */
(void) attr;
if ((ctxt == NULL) || (ctxt->myDoc == NULL))
return;
if ((xmlStrEqual(fullname, BAD_CAST "xml:id")) &&
(type != XML_ATTRIBUTE_ID)) {
/*
* Raise the error but keep the validity flag
*/
int tmp = ctxt->valid;
xmlErrValid(ctxt, XML_DTD_XMLID_TYPE,
"xml:id : attribute type should be ID\n", NULL, NULL);
ctxt->valid = tmp;
}
name = xmlSplitQName4(fullname, &prefix);
if (name == NULL)
xmlSAX2ErrMemory(ctxt);
ctxt->vctxt.valid = 1;
if (ctxt->inSubset == 1)
attr = xmlAddAttributeDecl(&ctxt->vctxt, ctxt->myDoc->intSubset, elem,
name, prefix, (xmlAttributeType) type,
(xmlAttributeDefault) def, defaultValue, tree);
else if (ctxt->inSubset == 2)
attr = xmlAddAttributeDecl(&ctxt->vctxt, ctxt->myDoc->extSubset, elem,
name, prefix, (xmlAttributeType) type,
(xmlAttributeDefault) def, defaultValue, tree);
else {
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
"SAX.xmlSAX2AttributeDecl(%s) called while not in subset\n",
name, NULL);
xmlFree(prefix);
xmlFreeEnumeration(tree);
return;
}
#ifdef LIBXML_VALID_ENABLED
if (ctxt->vctxt.valid == 0)
ctxt->valid = 0;
if ((attr != NULL) && (ctxt->validate) && (ctxt->wellFormed) &&
(ctxt->myDoc->intSubset != NULL))
ctxt->valid &= xmlValidateAttributeDecl(&ctxt->vctxt, ctxt->myDoc,
attr);
#endif /* LIBXML_VALID_ENABLED */
if (prefix != NULL)
xmlFree(prefix);
}
/**
* xmlSAX2ElementDecl:
* @ctx: the user data (XML parser context)
* @name: the element name
* @type: the element type
* @content: the element value tree
*
* An element definition has been parsed
*/
void
xmlSAX2ElementDecl(void *ctx, const xmlChar * name, int type,
xmlElementContentPtr content)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlElementPtr elem = NULL;
/* Avoid unused variable warning if features are disabled. */
(void) elem;
if ((ctxt == NULL) || (ctxt->myDoc == NULL))
return;
if (ctxt->inSubset == 1)
elem = xmlAddElementDecl(&ctxt->vctxt, ctxt->myDoc->intSubset,
name, (xmlElementTypeVal) type, content);
else if (ctxt->inSubset == 2)
elem = xmlAddElementDecl(&ctxt->vctxt, ctxt->myDoc->extSubset,
name, (xmlElementTypeVal) type, content);
else {
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
"SAX.xmlSAX2ElementDecl(%s) called while not in subset\n",
name, NULL);
return;
}
#ifdef LIBXML_VALID_ENABLED
if (elem == NULL)
ctxt->valid = 0;
if (ctxt->validate && ctxt->wellFormed &&
ctxt->myDoc && ctxt->myDoc->intSubset)
ctxt->valid &=
xmlValidateElementDecl(&ctxt->vctxt, ctxt->myDoc, elem);
#endif /* LIBXML_VALID_ENABLED */
}
/**
* xmlSAX2NotationDecl:
* @ctx: the user data (XML parser context)
* @name: The name of the notation
* @publicId: The public ID of the entity
* @systemId: The system ID of the entity
*
* What to do when a notation declaration has been parsed.
*/
void
xmlSAX2NotationDecl(void *ctx, const xmlChar *name,
const xmlChar *publicId, const xmlChar *systemId)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlNotationPtr nota = NULL;
/* Avoid unused variable warning if features are disabled. */
(void) nota;
if ((ctxt == NULL) || (ctxt->myDoc == NULL))
return;
if ((publicId == NULL) && (systemId == NULL)) {
xmlFatalErrMsg(ctxt, XML_ERR_NOTATION_PROCESSING,
"SAX.xmlSAX2NotationDecl(%s) externalID or PublicID missing\n",
name, NULL);
return;
} else if (ctxt->inSubset == 1)
nota = xmlAddNotationDecl(&ctxt->vctxt, ctxt->myDoc->intSubset, name,
publicId, systemId);
else if (ctxt->inSubset == 2)
nota = xmlAddNotationDecl(&ctxt->vctxt, ctxt->myDoc->extSubset, name,
publicId, systemId);
else {
xmlFatalErrMsg(ctxt, XML_ERR_NOTATION_PROCESSING,
"SAX.xmlSAX2NotationDecl(%s) called while not in subset\n",
name, NULL);
return;
}
#ifdef LIBXML_VALID_ENABLED
if (nota == NULL) ctxt->valid = 0;
if ((ctxt->validate) && (ctxt->wellFormed) &&
(ctxt->myDoc->intSubset != NULL))
ctxt->valid &= xmlValidateNotationDecl(&ctxt->vctxt, ctxt->myDoc,
nota);
#endif /* LIBXML_VALID_ENABLED */
}
/**
* xmlSAX2UnparsedEntityDecl:
* @ctx: the user data (XML parser context)
* @name: The name of the entity
* @publicId: The public ID of the entity
* @systemId: The system ID of the entity
* @notationName: the name of the notation
*
* What to do when an unparsed entity declaration is parsed
*/
void
xmlSAX2UnparsedEntityDecl(void *ctx, const xmlChar *name,
const xmlChar *publicId, const xmlChar *systemId,
const xmlChar *notationName)
{
xmlSAX2EntityDecl(ctx, name, XML_EXTERNAL_GENERAL_UNPARSED_ENTITY,
publicId, systemId, (xmlChar *) notationName);
}
/**
* xmlSAX2SetDocumentLocator:
* @ctx: the user data (XML parser context)
* @loc: A SAX Locator
*
* Receive the document locator at startup, actually xmlDefaultSAXLocator
* Everything is available on the context, so this is useless in our case.
*/
void
xmlSAX2SetDocumentLocator(void *ctx ATTRIBUTE_UNUSED, xmlSAXLocatorPtr loc ATTRIBUTE_UNUSED)
{
}
/**
* xmlSAX2StartDocument:
* @ctx: the user data (XML parser context)
*
* called when the document start being processed.
*/
void
xmlSAX2StartDocument(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlDocPtr doc;
if (ctx == NULL) return;
#ifdef LIBXML_HTML_ENABLED
if (ctxt->html) {
if (ctxt->myDoc == NULL)
ctxt->myDoc = htmlNewDocNoDtD(NULL, NULL);
if (ctxt->myDoc == NULL) {
xmlSAX2ErrMemory(ctxt);
return;
}
ctxt->myDoc->properties = XML_DOC_HTML;
ctxt->myDoc->parseFlags = ctxt->options;
} else
#endif
{
doc = ctxt->myDoc = xmlNewDoc(ctxt->version);
if (doc != NULL) {
doc->properties = 0;
if (ctxt->options & XML_PARSE_OLD10)
doc->properties |= XML_DOC_OLD10;
doc->parseFlags = ctxt->options;
doc->standalone = ctxt->standalone;
} else {
xmlSAX2ErrMemory(ctxt);
return;
}
if ((ctxt->dictNames) && (doc != NULL)) {
doc->dict = ctxt->dict;
xmlDictReference(doc->dict);
}
}
if ((ctxt->myDoc != NULL) && (ctxt->myDoc->URL == NULL) &&
(ctxt->input != NULL) && (ctxt->input->filename != NULL)) {
ctxt->myDoc->URL = xmlPathToURI((const xmlChar *)ctxt->input->filename);
if (ctxt->myDoc->URL == NULL)
xmlSAX2ErrMemory(ctxt);
}
}
/**
* xmlSAX2EndDocument:
* @ctx: the user data (XML parser context)
*
* called when the document end has been detected.
*/
void
xmlSAX2EndDocument(void *ctx)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlDocPtr doc;
if (ctx == NULL) return;
#ifdef LIBXML_VALID_ENABLED
if (ctxt->validate && ctxt->wellFormed &&
ctxt->myDoc && ctxt->myDoc->intSubset)
ctxt->valid &= xmlValidateDocumentFinal(&ctxt->vctxt, ctxt->myDoc);
#endif /* LIBXML_VALID_ENABLED */
doc = ctxt->myDoc;
if ((doc != NULL) && (doc->encoding == NULL)) {
const xmlChar *encoding = xmlGetActualEncoding(ctxt);
if (encoding != NULL) {
doc->encoding = xmlStrdup(encoding);
if (doc->encoding == NULL)
xmlSAX2ErrMemory(ctxt);
}
}
}
static void
xmlSAX2AppendChild(xmlParserCtxtPtr ctxt, xmlNodePtr node) {
xmlNodePtr parent;
xmlNodePtr last;
if (ctxt->inSubset == 1) {
parent = (xmlNodePtr) ctxt->myDoc->intSubset;
} else if (ctxt->inSubset == 2) {
parent = (xmlNodePtr) ctxt->myDoc->extSubset;
} else {
parent = ctxt->node;
if (parent == NULL)
parent = (xmlNodePtr) ctxt->myDoc;
}
last = parent->last;
if (last == NULL) {
parent->children = node;
} else {
last->next = node;
node->prev = last;
}
parent->last = node;
node->parent = parent;
if ((node->type != XML_TEXT_NODE) &&
(ctxt->linenumbers) &&
(ctxt->input != NULL)) {
if ((unsigned) ctxt->input->line < (unsigned) USHRT_MAX)
node->line = ctxt->input->line;
else
node->line = USHRT_MAX;
}
}
#if defined(LIBXML_SAX1_ENABLED)
/**
* xmlNsErrMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an error string
* @str2: an error string
*
* Handle a namespace error
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_NAMESPACE, error, XML_ERR_ERROR,
str1, str2, NULL, 0, msg, str1, str2);
}
/**
* xmlSAX1Attribute:
* @ctx: the user data (XML parser context)
* @fullname: The attribute name, including namespace prefix
* @value: The attribute value
*
* Handle an attribute that has been read by the parser.
*
* Deprecated SAX1 interface.
*/
static void
xmlSAX1Attribute(xmlParserCtxtPtr ctxt, const xmlChar *fullname,
const xmlChar *value, const xmlChar *prefix)
{
xmlAttrPtr ret;
const xmlChar *name;
xmlChar *ns;
xmlNsPtr namespace;
/*
* Split the full name into a namespace prefix and the tag name
*/
name = xmlSplitQName4(fullname, &ns);
if (name == NULL) {
xmlSAX2ErrMemory(ctxt);
return;
}
/*
* Check whether it's a namespace definition
*/
if ((ns == NULL) &&
(name[0] == 'x') && (name[1] == 'm') && (name[2] == 'l') &&
(name[3] == 'n') && (name[4] == 's') && (name[5] == 0)) {
xmlNsPtr nsret;
xmlChar *val;
/* Avoid unused variable warning if features are disabled. */
(void) nsret;
if (!ctxt->replaceEntities) {
/* TODO: normalize if needed */
val = xmlExpandEntitiesInAttValue(ctxt, value, /* normalize */ 0);
if (val == NULL) {
xmlSAX2ErrMemory(ctxt);
return;
}
} else {
val = (xmlChar *) value;
}
if (val[0] != 0) {
xmlURIPtr uri;
if (xmlParseURISafe((const char *)val, &uri) < 0)
xmlSAX2ErrMemory(ctxt);
if (uri == NULL) {
xmlNsWarnMsg(ctxt, XML_WAR_NS_URI,
"xmlns:%s: %s not a valid URI\n", name, value);