You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1164 lines
31 KiB
1164 lines
31 KiB
/*
|
|
* entities.c : implementation for the XML entities handling
|
|
*
|
|
* See Copyright for the status of this software.
|
|
*
|
|
* daniel@veillard.com
|
|
*/
|
|
|
|
/* To avoid EBCDIC trouble when parsing on zOS */
|
|
#if defined(__MVS__)
|
|
#pragma convert("ISO8859-1")
|
|
#endif
|
|
|
|
#define IN_LIBXML
|
|
#include "libxml.h"
|
|
|
|
#include <string.h>
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#include <libxml/xmlmemory.h>
|
|
#include <libxml/hash.h>
|
|
#include <libxml/entities.h>
|
|
#include <libxml/parser.h>
|
|
#include <libxml/parserInternals.h>
|
|
#include <libxml/xmlerror.h>
|
|
#include <libxml/globals.h>
|
|
#include <libxml/dict.h>
|
|
|
|
#include "save.h"
|
|
|
|
/*
|
|
* The XML predefined entities.
|
|
*/
|
|
|
|
static xmlEntity xmlEntityLt = {
|
|
NULL, XML_ENTITY_DECL, BAD_CAST "lt",
|
|
NULL, NULL, NULL, NULL, NULL, NULL,
|
|
BAD_CAST "<", BAD_CAST "<", 1,
|
|
XML_INTERNAL_PREDEFINED_ENTITY,
|
|
NULL, NULL, NULL, NULL, 0, 1
|
|
};
|
|
static xmlEntity xmlEntityGt = {
|
|
NULL, XML_ENTITY_DECL, BAD_CAST "gt",
|
|
NULL, NULL, NULL, NULL, NULL, NULL,
|
|
BAD_CAST ">", BAD_CAST ">", 1,
|
|
XML_INTERNAL_PREDEFINED_ENTITY,
|
|
NULL, NULL, NULL, NULL, 0, 1
|
|
};
|
|
static xmlEntity xmlEntityAmp = {
|
|
NULL, XML_ENTITY_DECL, BAD_CAST "amp",
|
|
NULL, NULL, NULL, NULL, NULL, NULL,
|
|
BAD_CAST "&", BAD_CAST "&", 1,
|
|
XML_INTERNAL_PREDEFINED_ENTITY,
|
|
NULL, NULL, NULL, NULL, 0, 1
|
|
};
|
|
static xmlEntity xmlEntityQuot = {
|
|
NULL, XML_ENTITY_DECL, BAD_CAST "quot",
|
|
NULL, NULL, NULL, NULL, NULL, NULL,
|
|
BAD_CAST "\"", BAD_CAST "\"", 1,
|
|
XML_INTERNAL_PREDEFINED_ENTITY,
|
|
NULL, NULL, NULL, NULL, 0, 1
|
|
};
|
|
static xmlEntity xmlEntityApos = {
|
|
NULL, XML_ENTITY_DECL, BAD_CAST "apos",
|
|
NULL, NULL, NULL, NULL, NULL, NULL,
|
|
BAD_CAST "'", BAD_CAST "'", 1,
|
|
XML_INTERNAL_PREDEFINED_ENTITY,
|
|
NULL, NULL, NULL, NULL, 0, 1
|
|
};
|
|
|
|
/**
|
|
* xmlEntitiesErrMemory:
|
|
* @extra: extra information
|
|
*
|
|
* Handle an out of memory condition
|
|
*/
|
|
static void
|
|
xmlEntitiesErrMemory(const char *extra)
|
|
{
|
|
__xmlSimpleError(XML_FROM_TREE, XML_ERR_NO_MEMORY, NULL, NULL, extra);
|
|
}
|
|
|
|
/**
|
|
* xmlEntitiesErr:
|
|
* @code: the error code
|
|
* @msg: the message
|
|
*
|
|
* Handle an out of memory condition
|
|
*/
|
|
static void LIBXML_ATTR_FORMAT(2,0)
|
|
xmlEntitiesErr(xmlParserErrors code, const char *msg)
|
|
{
|
|
__xmlSimpleError(XML_FROM_TREE, code, NULL, msg, NULL);
|
|
}
|
|
|
|
/*
|
|
* xmlFreeEntity : clean-up an entity record.
|
|
*/
|
|
static void
|
|
xmlFreeEntity(xmlEntityPtr entity)
|
|
{
|
|
xmlDictPtr dict = NULL;
|
|
|
|
if (entity == NULL)
|
|
return;
|
|
|
|
if (entity->doc != NULL)
|
|
dict = entity->doc->dict;
|
|
|
|
|
|
if ((entity->children) && (entity->owner == 1) &&
|
|
(entity == (xmlEntityPtr) entity->children->parent))
|
|
xmlFreeNodeList(entity->children);
|
|
if (dict != NULL) {
|
|
if ((entity->name != NULL) && (!xmlDictOwns(dict, entity->name)))
|
|
xmlFree((char *) entity->name);
|
|
if ((entity->ExternalID != NULL) &&
|
|
(!xmlDictOwns(dict, entity->ExternalID)))
|
|
xmlFree((char *) entity->ExternalID);
|
|
if ((entity->SystemID != NULL) &&
|
|
(!xmlDictOwns(dict, entity->SystemID)))
|
|
xmlFree((char *) entity->SystemID);
|
|
if ((entity->URI != NULL) && (!xmlDictOwns(dict, entity->URI)))
|
|
xmlFree((char *) entity->URI);
|
|
if ((entity->content != NULL)
|
|
&& (!xmlDictOwns(dict, entity->content)))
|
|
xmlFree((char *) entity->content);
|
|
if ((entity->orig != NULL) && (!xmlDictOwns(dict, entity->orig)))
|
|
xmlFree((char *) entity->orig);
|
|
} else {
|
|
if (entity->name != NULL)
|
|
xmlFree((char *) entity->name);
|
|
if (entity->ExternalID != NULL)
|
|
xmlFree((char *) entity->ExternalID);
|
|
if (entity->SystemID != NULL)
|
|
xmlFree((char *) entity->SystemID);
|
|
if (entity->URI != NULL)
|
|
xmlFree((char *) entity->URI);
|
|
if (entity->content != NULL)
|
|
xmlFree((char *) entity->content);
|
|
if (entity->orig != NULL)
|
|
xmlFree((char *) entity->orig);
|
|
}
|
|
xmlFree(entity);
|
|
}
|
|
|
|
/*
|
|
* xmlCreateEntity:
|
|
*
|
|
* internal routine doing the entity node structures allocations
|
|
*/
|
|
static xmlEntityPtr
|
|
xmlCreateEntity(xmlDictPtr dict, const xmlChar *name, int type,
|
|
const xmlChar *ExternalID, const xmlChar *SystemID,
|
|
const xmlChar *content) {
|
|
xmlEntityPtr ret;
|
|
|
|
ret = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
|
|
if (ret == NULL) {
|
|
xmlEntitiesErrMemory("xmlCreateEntity: malloc failed");
|
|
return(NULL);
|
|
}
|
|
memset(ret, 0, sizeof(xmlEntity));
|
|
ret->type = XML_ENTITY_DECL;
|
|
ret->checked = 0;
|
|
|
|
/*
|
|
* fill the structure.
|
|
*/
|
|
ret->etype = (xmlEntityType) type;
|
|
if (dict == NULL) {
|
|
ret->name = xmlStrdup(name);
|
|
if (ExternalID != NULL)
|
|
ret->ExternalID = xmlStrdup(ExternalID);
|
|
if (SystemID != NULL)
|
|
ret->SystemID = xmlStrdup(SystemID);
|
|
} else {
|
|
ret->name = xmlDictLookup(dict, name, -1);
|
|
if (ExternalID != NULL)
|
|
ret->ExternalID = xmlDictLookup(dict, ExternalID, -1);
|
|
if (SystemID != NULL)
|
|
ret->SystemID = xmlDictLookup(dict, SystemID, -1);
|
|
}
|
|
if (content != NULL) {
|
|
ret->length = xmlStrlen(content);
|
|
if ((dict != NULL) && (ret->length < 5))
|
|
ret->content = (xmlChar *)
|
|
xmlDictLookup(dict, content, ret->length);
|
|
else
|
|
ret->content = xmlStrndup(content, ret->length);
|
|
} else {
|
|
ret->length = 0;
|
|
ret->content = NULL;
|
|
}
|
|
ret->URI = NULL; /* to be computed by the layer knowing
|
|
the defining entity */
|
|
ret->orig = NULL;
|
|
ret->owner = 0;
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/*
|
|
* xmlAddEntity : register a new entity for an entities table.
|
|
*/
|
|
static xmlEntityPtr
|
|
xmlAddEntity(xmlDtdPtr dtd, const xmlChar *name, int type,
|
|
const xmlChar *ExternalID, const xmlChar *SystemID,
|
|
const xmlChar *content) {
|
|
xmlDictPtr dict = NULL;
|
|
xmlEntitiesTablePtr table = NULL;
|
|
xmlEntityPtr ret, predef;
|
|
|
|
if (name == NULL)
|
|
return(NULL);
|
|
if (dtd == NULL)
|
|
return(NULL);
|
|
if (dtd->doc != NULL)
|
|
dict = dtd->doc->dict;
|
|
|
|
switch (type) {
|
|
case XML_INTERNAL_GENERAL_ENTITY:
|
|
case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
|
|
case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
|
|
predef = xmlGetPredefinedEntity(name);
|
|
if (predef != NULL) {
|
|
int valid = 0;
|
|
|
|
/* 4.6 Predefined Entities */
|
|
if ((type == XML_INTERNAL_GENERAL_ENTITY) &&
|
|
(content != NULL)) {
|
|
int c = predef->content[0];
|
|
|
|
if (((content[0] == c) && (content[1] == 0)) &&
|
|
((c == '>') || (c == '\'') || (c == '"'))) {
|
|
valid = 1;
|
|
} else if ((content[0] == '&') && (content[1] == '#')) {
|
|
if (content[2] == 'x') {
|
|
xmlChar *hex = BAD_CAST "0123456789ABCDEF";
|
|
xmlChar ref[] = "00;";
|
|
|
|
ref[0] = hex[c / 16 % 16];
|
|
ref[1] = hex[c % 16];
|
|
if (xmlStrcasecmp(&content[3], ref) == 0)
|
|
valid = 1;
|
|
} else {
|
|
xmlChar ref[] = "00;";
|
|
|
|
ref[0] = '0' + c / 10 % 10;
|
|
ref[1] = '0' + c % 10;
|
|
if (xmlStrEqual(&content[2], ref))
|
|
valid = 1;
|
|
}
|
|
}
|
|
}
|
|
if (!valid) {
|
|
xmlEntitiesErr(XML_ERR_ENTITY_PROCESSING,
|
|
"xmlAddEntity: invalid redeclaration of predefined"
|
|
" entity");
|
|
return(NULL);
|
|
}
|
|
}
|
|
if (dtd->entities == NULL)
|
|
dtd->entities = xmlHashCreateDict(0, dict);
|
|
table = dtd->entities;
|
|
break;
|
|
case XML_INTERNAL_PARAMETER_ENTITY:
|
|
case XML_EXTERNAL_PARAMETER_ENTITY:
|
|
if (dtd->pentities == NULL)
|
|
dtd->pentities = xmlHashCreateDict(0, dict);
|
|
table = dtd->pentities;
|
|
break;
|
|
case XML_INTERNAL_PREDEFINED_ENTITY:
|
|
return(NULL);
|
|
}
|
|
if (table == NULL)
|
|
return(NULL);
|
|
ret = xmlCreateEntity(dict, name, type, ExternalID, SystemID, content);
|
|
if (ret == NULL)
|
|
return(NULL);
|
|
ret->doc = dtd->doc;
|
|
|
|
if (xmlHashAddEntry(table, name, ret)) {
|
|
/*
|
|
* entity was already defined at another level.
|
|
*/
|
|
xmlFreeEntity(ret);
|
|
return(NULL);
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlGetPredefinedEntity:
|
|
* @name: the entity name
|
|
*
|
|
* Check whether this name is an predefined entity.
|
|
*
|
|
* Returns NULL if not, otherwise the entity
|
|
*/
|
|
xmlEntityPtr
|
|
xmlGetPredefinedEntity(const xmlChar *name) {
|
|
if (name == NULL) return(NULL);
|
|
switch (name[0]) {
|
|
case 'l':
|
|
if (xmlStrEqual(name, BAD_CAST "lt"))
|
|
return(&xmlEntityLt);
|
|
break;
|
|
case 'g':
|
|
if (xmlStrEqual(name, BAD_CAST "gt"))
|
|
return(&xmlEntityGt);
|
|
break;
|
|
case 'a':
|
|
if (xmlStrEqual(name, BAD_CAST "amp"))
|
|
return(&xmlEntityAmp);
|
|
if (xmlStrEqual(name, BAD_CAST "apos"))
|
|
return(&xmlEntityApos);
|
|
break;
|
|
case 'q':
|
|
if (xmlStrEqual(name, BAD_CAST "quot"))
|
|
return(&xmlEntityQuot);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlAddDtdEntity:
|
|
* @doc: the document
|
|
* @name: the entity name
|
|
* @type: the entity type XML_xxx_yyy_ENTITY
|
|
* @ExternalID: the entity external ID if available
|
|
* @SystemID: the entity system ID if available
|
|
* @content: the entity content
|
|
*
|
|
* Register a new entity for this document DTD external subset.
|
|
*
|
|
* Returns a pointer to the entity or NULL in case of error
|
|
*/
|
|
xmlEntityPtr
|
|
xmlAddDtdEntity(xmlDocPtr doc, const xmlChar *name, int type,
|
|
const xmlChar *ExternalID, const xmlChar *SystemID,
|
|
const xmlChar *content) {
|
|
xmlEntityPtr ret;
|
|
xmlDtdPtr dtd;
|
|
|
|
if (doc == NULL) {
|
|
xmlEntitiesErr(XML_DTD_NO_DOC,
|
|
"xmlAddDtdEntity: document is NULL");
|
|
return(NULL);
|
|
}
|
|
if (doc->extSubset == NULL) {
|
|
xmlEntitiesErr(XML_DTD_NO_DTD,
|
|
"xmlAddDtdEntity: document without external subset");
|
|
return(NULL);
|
|
}
|
|
dtd = doc->extSubset;
|
|
ret = xmlAddEntity(dtd, name, type, ExternalID, SystemID, content);
|
|
if (ret == NULL) return(NULL);
|
|
|
|
/*
|
|
* Link it to the DTD
|
|
*/
|
|
ret->parent = dtd;
|
|
ret->doc = dtd->doc;
|
|
if (dtd->last == NULL) {
|
|
dtd->children = dtd->last = (xmlNodePtr) ret;
|
|
} else {
|
|
dtd->last->next = (xmlNodePtr) ret;
|
|
ret->prev = dtd->last;
|
|
dtd->last = (xmlNodePtr) ret;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlAddDocEntity:
|
|
* @doc: the document
|
|
* @name: the entity name
|
|
* @type: the entity type XML_xxx_yyy_ENTITY
|
|
* @ExternalID: the entity external ID if available
|
|
* @SystemID: the entity system ID if available
|
|
* @content: the entity content
|
|
*
|
|
* Register a new entity for this document.
|
|
*
|
|
* Returns a pointer to the entity or NULL in case of error
|
|
*/
|
|
xmlEntityPtr
|
|
xmlAddDocEntity(xmlDocPtr doc, const xmlChar *name, int type,
|
|
const xmlChar *ExternalID, const xmlChar *SystemID,
|
|
const xmlChar *content) {
|
|
xmlEntityPtr ret;
|
|
xmlDtdPtr dtd;
|
|
|
|
if (doc == NULL) {
|
|
xmlEntitiesErr(XML_DTD_NO_DOC,
|
|
"xmlAddDocEntity: document is NULL");
|
|
return(NULL);
|
|
}
|
|
if (doc->intSubset == NULL) {
|
|
xmlEntitiesErr(XML_DTD_NO_DTD,
|
|
"xmlAddDocEntity: document without internal subset");
|
|
return(NULL);
|
|
}
|
|
dtd = doc->intSubset;
|
|
ret = xmlAddEntity(dtd, name, type, ExternalID, SystemID, content);
|
|
if (ret == NULL) return(NULL);
|
|
|
|
/*
|
|
* Link it to the DTD
|
|
*/
|
|
ret->parent = dtd;
|
|
ret->doc = dtd->doc;
|
|
if (dtd->last == NULL) {
|
|
dtd->children = dtd->last = (xmlNodePtr) ret;
|
|
} else {
|
|
dtd->last->next = (xmlNodePtr) ret;
|
|
ret->prev = dtd->last;
|
|
dtd->last = (xmlNodePtr) ret;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlNewEntity:
|
|
* @doc: the document
|
|
* @name: the entity name
|
|
* @type: the entity type XML_xxx_yyy_ENTITY
|
|
* @ExternalID: the entity external ID if available
|
|
* @SystemID: the entity system ID if available
|
|
* @content: the entity content
|
|
*
|
|
* Create a new entity, this differs from xmlAddDocEntity() that if
|
|
* the document is NULL or has no internal subset defined, then an
|
|
* unlinked entity structure will be returned, it is then the responsibility
|
|
* of the caller to link it to the document later or free it when not needed
|
|
* anymore.
|
|
*
|
|
* Returns a pointer to the entity or NULL in case of error
|
|
*/
|
|
xmlEntityPtr
|
|
xmlNewEntity(xmlDocPtr doc, const xmlChar *name, int type,
|
|
const xmlChar *ExternalID, const xmlChar *SystemID,
|
|
const xmlChar *content) {
|
|
xmlEntityPtr ret;
|
|
xmlDictPtr dict;
|
|
|
|
if ((doc != NULL) && (doc->intSubset != NULL)) {
|
|
return(xmlAddDocEntity(doc, name, type, ExternalID, SystemID, content));
|
|
}
|
|
if (doc != NULL)
|
|
dict = doc->dict;
|
|
else
|
|
dict = NULL;
|
|
ret = xmlCreateEntity(dict, name, type, ExternalID, SystemID, content);
|
|
if (ret == NULL)
|
|
return(NULL);
|
|
ret->doc = doc;
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlGetEntityFromTable:
|
|
* @table: an entity table
|
|
* @name: the entity name
|
|
* @parameter: look for parameter entities
|
|
*
|
|
* Do an entity lookup in the table.
|
|
* returns the corresponding parameter entity, if found.
|
|
*
|
|
* Returns A pointer to the entity structure or NULL if not found.
|
|
*/
|
|
static xmlEntityPtr
|
|
xmlGetEntityFromTable(xmlEntitiesTablePtr table, const xmlChar *name) {
|
|
return((xmlEntityPtr) xmlHashLookup(table, name));
|
|
}
|
|
|
|
/**
|
|
* xmlGetParameterEntity:
|
|
* @doc: the document referencing the entity
|
|
* @name: the entity name
|
|
*
|
|
* Do an entity lookup in the internal and external subsets and
|
|
* returns the corresponding parameter entity, if found.
|
|
*
|
|
* Returns A pointer to the entity structure or NULL if not found.
|
|
*/
|
|
xmlEntityPtr
|
|
xmlGetParameterEntity(xmlDocPtr doc, const xmlChar *name) {
|
|
xmlEntitiesTablePtr table;
|
|
xmlEntityPtr ret;
|
|
|
|
if (doc == NULL)
|
|
return(NULL);
|
|
if ((doc->intSubset != NULL) && (doc->intSubset->pentities != NULL)) {
|
|
table = (xmlEntitiesTablePtr) doc->intSubset->pentities;
|
|
ret = xmlGetEntityFromTable(table, name);
|
|
if (ret != NULL)
|
|
return(ret);
|
|
}
|
|
if ((doc->extSubset != NULL) && (doc->extSubset->pentities != NULL)) {
|
|
table = (xmlEntitiesTablePtr) doc->extSubset->pentities;
|
|
return(xmlGetEntityFromTable(table, name));
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlGetDtdEntity:
|
|
* @doc: the document referencing the entity
|
|
* @name: the entity name
|
|
*
|
|
* Do an entity lookup in the DTD entity hash table and
|
|
* returns the corresponding entity, if found.
|
|
* Note: the first argument is the document node, not the DTD node.
|
|
*
|
|
* Returns A pointer to the entity structure or NULL if not found.
|
|
*/
|
|
xmlEntityPtr
|
|
xmlGetDtdEntity(xmlDocPtr doc, const xmlChar *name) {
|
|
xmlEntitiesTablePtr table;
|
|
|
|
if (doc == NULL)
|
|
return(NULL);
|
|
if ((doc->extSubset != NULL) && (doc->extSubset->entities != NULL)) {
|
|
table = (xmlEntitiesTablePtr) doc->extSubset->entities;
|
|
return(xmlGetEntityFromTable(table, name));
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlGetDocEntity:
|
|
* @doc: the document referencing the entity
|
|
* @name: the entity name
|
|
*
|
|
* Do an entity lookup in the document entity hash table and
|
|
* returns the corresponding entity, otherwise a lookup is done
|
|
* in the predefined entities too.
|
|
*
|
|
* Returns A pointer to the entity structure or NULL if not found.
|
|
*/
|
|
xmlEntityPtr
|
|
xmlGetDocEntity(const xmlDoc *doc, const xmlChar *name) {
|
|
xmlEntityPtr cur;
|
|
xmlEntitiesTablePtr table;
|
|
|
|
if (doc != NULL) {
|
|
if ((doc->intSubset != NULL) && (doc->intSubset->entities != NULL)) {
|
|
table = (xmlEntitiesTablePtr) doc->intSubset->entities;
|
|
cur = xmlGetEntityFromTable(table, name);
|
|
if (cur != NULL)
|
|
return(cur);
|
|
}
|
|
if (doc->standalone != 1) {
|
|
if ((doc->extSubset != NULL) &&
|
|
(doc->extSubset->entities != NULL)) {
|
|
table = (xmlEntitiesTablePtr) doc->extSubset->entities;
|
|
cur = xmlGetEntityFromTable(table, name);
|
|
if (cur != NULL)
|
|
return(cur);
|
|
}
|
|
}
|
|
}
|
|
return(xmlGetPredefinedEntity(name));
|
|
}
|
|
|
|
/*
|
|
* Macro used to grow the current buffer.
|
|
*/
|
|
#define growBufferReentrant() { \
|
|
xmlChar *tmp; \
|
|
size_t new_size = buffer_size * 2; \
|
|
if (new_size < buffer_size) goto mem_error; \
|
|
tmp = (xmlChar *) xmlRealloc(buffer, new_size); \
|
|
if (tmp == NULL) goto mem_error; \
|
|
buffer = tmp; \
|
|
buffer_size = new_size; \
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeEntitiesInternal:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
* @attr: are we handling an attribute value
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts.
|
|
* Contrary to xmlEncodeEntities, this routine is reentrant, and result
|
|
* must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
static xmlChar *
|
|
xmlEncodeEntitiesInternal(xmlDocPtr doc, const xmlChar *input, int attr) {
|
|
const xmlChar *cur = input;
|
|
xmlChar *buffer = NULL;
|
|
xmlChar *out = NULL;
|
|
size_t buffer_size = 0;
|
|
int html = 0;
|
|
|
|
if (input == NULL) return(NULL);
|
|
if (doc != NULL)
|
|
html = (doc->type == XML_HTML_DOCUMENT_NODE);
|
|
|
|
/*
|
|
* allocate an translation buffer.
|
|
*/
|
|
buffer_size = 1000;
|
|
buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
|
|
if (buffer == NULL) {
|
|
xmlEntitiesErrMemory("xmlEncodeEntities: malloc failed");
|
|
return(NULL);
|
|
}
|
|
out = buffer;
|
|
|
|
while (*cur != '\0') {
|
|
size_t indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
|
|
/*
|
|
* By default one have to encode at least '<', '>', '"' and '&' !
|
|
*/
|
|
if (*cur == '<') {
|
|
const xmlChar *end;
|
|
|
|
/*
|
|
* Special handling of server side include in HTML attributes
|
|
*/
|
|
if (html && attr &&
|
|
(cur[1] == '!') && (cur[2] == '-') && (cur[3] == '-') &&
|
|
((end = xmlStrstr(cur, BAD_CAST "-->")) != NULL)) {
|
|
while (cur != end) {
|
|
*out++ = *cur++;
|
|
indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
}
|
|
*out++ = *cur++;
|
|
*out++ = *cur++;
|
|
*out++ = *cur++;
|
|
continue;
|
|
}
|
|
*out++ = '&';
|
|
*out++ = 'l';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '>') {
|
|
*out++ = '&';
|
|
*out++ = 'g';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '&') {
|
|
/*
|
|
* Special handling of &{...} construct from HTML 4, see
|
|
* http://www.w3.org/TR/html401/appendix/notes.html#h-B.7.1
|
|
*/
|
|
if (html && attr && (cur[1] == '{') &&
|
|
(strchr((const char *) cur, '}'))) {
|
|
while (*cur != '}') {
|
|
*out++ = *cur++;
|
|
indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
}
|
|
*out++ = *cur++;
|
|
continue;
|
|
}
|
|
*out++ = '&';
|
|
*out++ = 'a';
|
|
*out++ = 'm';
|
|
*out++ = 'p';
|
|
*out++ = ';';
|
|
} else if (((*cur >= 0x20) && (*cur < 0x80)) ||
|
|
(*cur == '\n') || (*cur == '\t') || ((html) && (*cur == '\r'))) {
|
|
/*
|
|
* default case, just copy !
|
|
*/
|
|
*out++ = *cur;
|
|
} else if (*cur >= 0x80) {
|
|
if (((doc != NULL) && (doc->encoding != NULL)) || (html)) {
|
|
/*
|
|
* Bjørn Reese <br@sseusa.com> provided the patch
|
|
xmlChar xc;
|
|
xc = (*cur & 0x3F) << 6;
|
|
if (cur[1] != 0) {
|
|
xc += *(++cur) & 0x3F;
|
|
*out++ = xc;
|
|
} else
|
|
*/
|
|
*out++ = *cur;
|
|
} else {
|
|
/*
|
|
* We assume we have UTF-8 input.
|
|
* It must match either:
|
|
* 110xxxxx 10xxxxxx
|
|
* 1110xxxx 10xxxxxx 10xxxxxx
|
|
* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
|
* That is:
|
|
* cur[0] is 11xxxxxx
|
|
* cur[1] is 10xxxxxx
|
|
* cur[2] is 10xxxxxx if cur[0] is 111xxxxx
|
|
* cur[3] is 10xxxxxx if cur[0] is 1111xxxx
|
|
* cur[0] is not 11111xxx
|
|
*/
|
|
char buf[11], *ptr;
|
|
int val = 0, l = 1;
|
|
|
|
if (((cur[0] & 0xC0) != 0xC0) ||
|
|
((cur[1] & 0xC0) != 0x80) ||
|
|
(((cur[0] & 0xE0) == 0xE0) && ((cur[2] & 0xC0) != 0x80)) ||
|
|
(((cur[0] & 0xF0) == 0xF0) && ((cur[3] & 0xC0) != 0x80)) ||
|
|
(((cur[0] & 0xF8) == 0xF8))) {
|
|
xmlEntitiesErr(XML_CHECK_NOT_UTF8,
|
|
"xmlEncodeEntities: input not UTF-8");
|
|
if (doc != NULL)
|
|
doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
|
|
snprintf(buf, sizeof(buf), "&#%d;", *cur);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
cur++;
|
|
continue;
|
|
} else if (*cur < 0xE0) {
|
|
val = (cur[0]) & 0x1F;
|
|
val <<= 6;
|
|
val |= (cur[1]) & 0x3F;
|
|
l = 2;
|
|
} else if (*cur < 0xF0) {
|
|
val = (cur[0]) & 0x0F;
|
|
val <<= 6;
|
|
val |= (cur[1]) & 0x3F;
|
|
val <<= 6;
|
|
val |= (cur[2]) & 0x3F;
|
|
l = 3;
|
|
} else if (*cur < 0xF8) {
|
|
val = (cur[0]) & 0x07;
|
|
val <<= 6;
|
|
val |= (cur[1]) & 0x3F;
|
|
val <<= 6;
|
|
val |= (cur[2]) & 0x3F;
|
|
val <<= 6;
|
|
val |= (cur[3]) & 0x3F;
|
|
l = 4;
|
|
}
|
|
if ((l == 1) || (!IS_CHAR(val))) {
|
|
xmlEntitiesErr(XML_ERR_INVALID_CHAR,
|
|
"xmlEncodeEntities: char out of range\n");
|
|
if (doc != NULL)
|
|
doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
|
|
snprintf(buf, sizeof(buf), "&#%d;", *cur);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
cur++;
|
|
continue;
|
|
}
|
|
/*
|
|
* We could do multiple things here. Just save as a char ref
|
|
*/
|
|
snprintf(buf, sizeof(buf), "&#x%X;", val);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
cur += l;
|
|
continue;
|
|
}
|
|
} else if (IS_BYTE_CHAR(*cur)) {
|
|
char buf[11], *ptr;
|
|
|
|
snprintf(buf, sizeof(buf), "&#%d;", *cur);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
}
|
|
cur++;
|
|
}
|
|
*out = 0;
|
|
return(buffer);
|
|
|
|
mem_error:
|
|
xmlEntitiesErrMemory("xmlEncodeEntities: realloc failed");
|
|
xmlFree(buffer);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeAttributeEntities:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts for
|
|
* attribute values.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeAttributeEntities(xmlDocPtr doc, const xmlChar *input) {
|
|
return xmlEncodeEntitiesInternal(doc, input, 1);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeEntitiesReentrant:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts.
|
|
* Contrary to xmlEncodeEntities, this routine is reentrant, and result
|
|
* must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeEntitiesReentrant(xmlDocPtr doc, const xmlChar *input) {
|
|
return xmlEncodeEntitiesInternal(doc, input, 0);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeSpecialChars:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* this routine is reentrant, and result must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeSpecialChars(const xmlDoc *doc ATTRIBUTE_UNUSED, const xmlChar *input) {
|
|
const xmlChar *cur = input;
|
|
xmlChar *buffer = NULL;
|
|
xmlChar *out = NULL;
|
|
size_t buffer_size = 0;
|
|
if (input == NULL) return(NULL);
|
|
|
|
/*
|
|
* allocate an translation buffer.
|
|
*/
|
|
buffer_size = 1000;
|
|
buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
|
|
if (buffer == NULL) {
|
|
xmlEntitiesErrMemory("xmlEncodeSpecialChars: malloc failed");
|
|
return(NULL);
|
|
}
|
|
out = buffer;
|
|
|
|
while (*cur != '\0') {
|
|
size_t indx = out - buffer;
|
|
if (indx + 10 > buffer_size) {
|
|
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
|
|
/*
|
|
* By default one have to encode at least '<', '>', '"' and '&' !
|
|
*/
|
|
if (*cur == '<') {
|
|
*out++ = '&';
|
|
*out++ = 'l';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '>') {
|
|
*out++ = '&';
|
|
*out++ = 'g';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '&') {
|
|
*out++ = '&';
|
|
*out++ = 'a';
|
|
*out++ = 'm';
|
|
*out++ = 'p';
|
|
*out++ = ';';
|
|
} else if (*cur == '"') {
|
|
*out++ = '&';
|
|
*out++ = 'q';
|
|
*out++ = 'u';
|
|
*out++ = 'o';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '\r') {
|
|
*out++ = '&';
|
|
*out++ = '#';
|
|
*out++ = '1';
|
|
*out++ = '3';
|
|
*out++ = ';';
|
|
} else {
|
|
/*
|
|
* Works because on UTF-8, all extended sequences cannot
|
|
* result in bytes in the ASCII range.
|
|
*/
|
|
*out++ = *cur;
|
|
}
|
|
cur++;
|
|
}
|
|
*out = 0;
|
|
return(buffer);
|
|
|
|
mem_error:
|
|
xmlEntitiesErrMemory("xmlEncodeSpecialChars: realloc failed");
|
|
xmlFree(buffer);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlCreateEntitiesTable:
|
|
*
|
|
* create and initialize an empty entities hash table.
|
|
* This really doesn't make sense and should be deprecated
|
|
*
|
|
* Returns the xmlEntitiesTablePtr just created or NULL in case of error.
|
|
*/
|
|
xmlEntitiesTablePtr
|
|
xmlCreateEntitiesTable(void) {
|
|
return((xmlEntitiesTablePtr) xmlHashCreate(0));
|
|
}
|
|
|
|
/**
|
|
* xmlFreeEntityWrapper:
|
|
* @entity: An entity
|
|
* @name: its name
|
|
*
|
|
* Deallocate the memory used by an entities in the hash table.
|
|
*/
|
|
static void
|
|
xmlFreeEntityWrapper(void *entity, const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
if (entity != NULL)
|
|
xmlFreeEntity((xmlEntityPtr) entity);
|
|
}
|
|
|
|
/**
|
|
* xmlFreeEntitiesTable:
|
|
* @table: An entity table
|
|
*
|
|
* Deallocate the memory used by an entities hash table.
|
|
*/
|
|
void
|
|
xmlFreeEntitiesTable(xmlEntitiesTablePtr table) {
|
|
xmlHashFree(table, xmlFreeEntityWrapper);
|
|
}
|
|
|
|
#ifdef LIBXML_TREE_ENABLED
|
|
/**
|
|
* xmlCopyEntity:
|
|
* @ent: An entity
|
|
*
|
|
* Build a copy of an entity
|
|
*
|
|
* Returns the new xmlEntitiesPtr or NULL in case of error.
|
|
*/
|
|
static void *
|
|
xmlCopyEntity(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
xmlEntityPtr ent = (xmlEntityPtr) payload;
|
|
xmlEntityPtr cur;
|
|
|
|
cur = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
|
|
if (cur == NULL) {
|
|
xmlEntitiesErrMemory("xmlCopyEntity:: malloc failed");
|
|
return(NULL);
|
|
}
|
|
memset(cur, 0, sizeof(xmlEntity));
|
|
cur->type = XML_ENTITY_DECL;
|
|
|
|
cur->etype = ent->etype;
|
|
if (ent->name != NULL)
|
|
cur->name = xmlStrdup(ent->name);
|
|
if (ent->ExternalID != NULL)
|
|
cur->ExternalID = xmlStrdup(ent->ExternalID);
|
|
if (ent->SystemID != NULL)
|
|
cur->SystemID = xmlStrdup(ent->SystemID);
|
|
if (ent->content != NULL)
|
|
cur->content = xmlStrdup(ent->content);
|
|
if (ent->orig != NULL)
|
|
cur->orig = xmlStrdup(ent->orig);
|
|
if (ent->URI != NULL)
|
|
cur->URI = xmlStrdup(ent->URI);
|
|
return(cur);
|
|
}
|
|
|
|
/**
|
|
* xmlCopyEntitiesTable:
|
|
* @table: An entity table
|
|
*
|
|
* Build a copy of an entity table.
|
|
*
|
|
* Returns the new xmlEntitiesTablePtr or NULL in case of error.
|
|
*/
|
|
xmlEntitiesTablePtr
|
|
xmlCopyEntitiesTable(xmlEntitiesTablePtr table) {
|
|
return(xmlHashCopy(table, xmlCopyEntity));
|
|
}
|
|
#endif /* LIBXML_TREE_ENABLED */
|
|
|
|
#ifdef LIBXML_OUTPUT_ENABLED
|
|
|
|
/**
|
|
* xmlDumpEntityContent:
|
|
* @buf: An XML buffer.
|
|
* @content: The entity content.
|
|
*
|
|
* This will dump the quoted string value, taking care of the special
|
|
* treatment required by %
|
|
*/
|
|
static void
|
|
xmlDumpEntityContent(xmlBufferPtr buf, const xmlChar *content) {
|
|
if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return;
|
|
if (xmlStrchr(content, '%')) {
|
|
const xmlChar * base, *cur;
|
|
|
|
xmlBufferCCat(buf, "\"");
|
|
base = cur = content;
|
|
while (*cur != 0) {
|
|
if (*cur == '"') {
|
|
if (base != cur)
|
|
xmlBufferAdd(buf, base, cur - base);
|
|
xmlBufferAdd(buf, BAD_CAST """, 6);
|
|
cur++;
|
|
base = cur;
|
|
} else if (*cur == '%') {
|
|
if (base != cur)
|
|
xmlBufferAdd(buf, base, cur - base);
|
|
xmlBufferAdd(buf, BAD_CAST "%", 6);
|
|
cur++;
|
|
base = cur;
|
|
} else {
|
|
cur++;
|
|
}
|
|
}
|
|
if (base != cur)
|
|
xmlBufferAdd(buf, base, cur - base);
|
|
xmlBufferCCat(buf, "\"");
|
|
} else {
|
|
xmlBufferWriteQuotedString(buf, content);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xmlDumpEntityDecl:
|
|
* @buf: An XML buffer.
|
|
* @ent: An entity table
|
|
*
|
|
* This will dump the content of the entity table as an XML DTD definition
|
|
*/
|
|
void
|
|
xmlDumpEntityDecl(xmlBufferPtr buf, xmlEntityPtr ent) {
|
|
if ((buf == NULL) || (ent == NULL)) return;
|
|
switch (ent->etype) {
|
|
case XML_INTERNAL_GENERAL_ENTITY:
|
|
xmlBufferWriteChar(buf, "<!ENTITY ");
|
|
xmlBufferWriteCHAR(buf, ent->name);
|
|
xmlBufferWriteChar(buf, " ");
|
|
if (ent->orig != NULL)
|
|
xmlBufferWriteQuotedString(buf, ent->orig);
|
|
else
|
|
xmlDumpEntityContent(buf, ent->content);
|
|
xmlBufferWriteChar(buf, ">\n");
|
|
break;
|
|
case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
|
|
xmlBufferWriteChar(buf, "<!ENTITY ");
|
|
xmlBufferWriteCHAR(buf, ent->name);
|
|
if (ent->ExternalID != NULL) {
|
|
xmlBufferWriteChar(buf, " PUBLIC ");
|
|
xmlBufferWriteQuotedString(buf, ent->ExternalID);
|
|
xmlBufferWriteChar(buf, " ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
} else {
|
|
xmlBufferWriteChar(buf, " SYSTEM ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
}
|
|
xmlBufferWriteChar(buf, ">\n");
|
|
break;
|
|
case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
|
|
xmlBufferWriteChar(buf, "<!ENTITY ");
|
|
xmlBufferWriteCHAR(buf, ent->name);
|
|
if (ent->ExternalID != NULL) {
|
|
xmlBufferWriteChar(buf, " PUBLIC ");
|
|
xmlBufferWriteQuotedString(buf, ent->ExternalID);
|
|
xmlBufferWriteChar(buf, " ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
} else {
|
|
xmlBufferWriteChar(buf, " SYSTEM ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
}
|
|
if (ent->content != NULL) { /* Should be true ! */
|
|
xmlBufferWriteChar(buf, " NDATA ");
|
|
if (ent->orig != NULL)
|
|
xmlBufferWriteCHAR(buf, ent->orig);
|
|
else
|
|
xmlBufferWriteCHAR(buf, ent->content);
|
|
}
|
|
xmlBufferWriteChar(buf, ">\n");
|
|
break;
|
|
case XML_INTERNAL_PARAMETER_ENTITY:
|
|
xmlBufferWriteChar(buf, "<!ENTITY % ");
|
|
xmlBufferWriteCHAR(buf, ent->name);
|
|
xmlBufferWriteChar(buf, " ");
|
|
if (ent->orig == NULL)
|
|
xmlDumpEntityContent(buf, ent->content);
|
|
else
|
|
xmlBufferWriteQuotedString(buf, ent->orig);
|
|
xmlBufferWriteChar(buf, ">\n");
|
|
break;
|
|
case XML_EXTERNAL_PARAMETER_ENTITY:
|
|
xmlBufferWriteChar(buf, "<!ENTITY % ");
|
|
xmlBufferWriteCHAR(buf, ent->name);
|
|
if (ent->ExternalID != NULL) {
|
|
xmlBufferWriteChar(buf, " PUBLIC ");
|
|
xmlBufferWriteQuotedString(buf, ent->ExternalID);
|
|
xmlBufferWriteChar(buf, " ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
} else {
|
|
xmlBufferWriteChar(buf, " SYSTEM ");
|
|
xmlBufferWriteQuotedString(buf, ent->SystemID);
|
|
}
|
|
xmlBufferWriteChar(buf, ">\n");
|
|
break;
|
|
default:
|
|
xmlEntitiesErr(XML_DTD_UNKNOWN_ENTITY,
|
|
"xmlDumpEntitiesDecl: internal: unknown type entity type");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xmlDumpEntityDeclScan:
|
|
* @ent: An entity table
|
|
* @buf: An XML buffer.
|
|
*
|
|
* When using the hash table scan function, arguments need to be reversed
|
|
*/
|
|
static void
|
|
xmlDumpEntityDeclScan(void *ent, void *buf,
|
|
const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
xmlDumpEntityDecl((xmlBufferPtr) buf, (xmlEntityPtr) ent);
|
|
}
|
|
|
|
/**
|
|
* xmlDumpEntitiesTable:
|
|
* @buf: An XML buffer.
|
|
* @table: An entity table
|
|
*
|
|
* This will dump the content of the entity table as an XML DTD definition
|
|
*/
|
|
void
|
|
xmlDumpEntitiesTable(xmlBufferPtr buf, xmlEntitiesTablePtr table) {
|
|
xmlHashScan(table, xmlDumpEntityDeclScan, buf);
|
|
}
|
|
#endif /* LIBXML_OUTPUT_ENABLED */
|
|
#define bottom_entities
|
|
#include "elfgcchack.h"
|