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https://gitlab.gnome.org/GNOME/libxml2.git
synced 2025-03-20 18:50:08 +03:00
entities: Report malloc failures
Fix places where malloc failures aren't reported. Introduce new API function xmlAddEntity that returns separate error codes. Don't invoke global error handler for low-level errors which should be handled by higher layers. Invalid redelcaration warnings will be fixed later.
This commit is contained in:
Nick Wellnhofer
parent
2e5d273beb
commit
a1f7ecaef8
337
entities.c
337
entities.c
@ -68,48 +68,6 @@ static xmlEntity xmlEntityApos = {
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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/**
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* xmlEntitiesErrMemory:
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* @extra: extra information
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*
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* Handle an out of memory condition
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*/
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static void
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xmlEntitiesErrMemory(const char *extra)
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{
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__xmlSimpleError(XML_FROM_TREE, XML_ERR_NO_MEMORY, NULL, NULL, extra);
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}
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/**
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* xmlEntitiesErr:
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* @code: the error code
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* @msg: the message
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*
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* Raise an error.
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*/
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static void LIBXML_ATTR_FORMAT(2,0)
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xmlEntitiesErr(xmlParserErrors code, const char *msg)
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{
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__xmlSimpleError(XML_FROM_TREE, code, NULL, msg, NULL);
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}
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/**
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* xmlEntitiesWarn:
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* @code: the error code
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* @msg: the message
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*
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* Raise a warning.
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*/
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static void LIBXML_ATTR_FORMAT(2,0)
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xmlEntitiesWarn(xmlParserErrors code, const char *msg, const xmlChar *str1)
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{
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__xmlRaiseError(NULL, NULL, NULL,
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NULL, NULL, XML_FROM_TREE, code,
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XML_ERR_WARNING, NULL, 0,
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(const char *)str1, NULL, NULL, 0, 0,
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msg, (const char *)str1, NULL);
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}
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/*
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* xmlFreeEntity : clean-up an entity record.
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*/
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@ -150,37 +108,43 @@ xmlFreeEntity(xmlEntityPtr entity)
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* internal routine doing the entity node structures allocations
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*/
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static xmlEntityPtr
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xmlCreateEntity(xmlDictPtr dict, const xmlChar *name, int type,
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xmlCreateEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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ret = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
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if (ret == NULL) {
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xmlEntitiesErrMemory("xmlCreateEntity: malloc failed");
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if (ret == NULL)
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return(NULL);
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}
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memset(ret, 0, sizeof(xmlEntity));
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ret->doc = doc;
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ret->type = XML_ENTITY_DECL;
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/*
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* fill the structure.
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*/
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ret->etype = (xmlEntityType) type;
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if (dict == NULL) {
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if ((doc == NULL) || (doc->dict == NULL))
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ret->name = xmlStrdup(name);
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if (ExternalID != NULL)
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ret->ExternalID = xmlStrdup(ExternalID);
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if (SystemID != NULL)
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ret->SystemID = xmlStrdup(SystemID);
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} else {
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ret->name = xmlDictLookup(dict, name, -1);
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ret->ExternalID = xmlStrdup(ExternalID);
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ret->SystemID = xmlStrdup(SystemID);
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else
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ret->name = xmlDictLookup(doc->dict, name, -1);
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if (ret->name == NULL)
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goto error;
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if (ExternalID != NULL) {
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ret->ExternalID = xmlStrdup(ExternalID);
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if (ret->ExternalID == NULL)
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goto error;
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}
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if (SystemID != NULL) {
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ret->SystemID = xmlStrdup(SystemID);
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if (ret->SystemID == NULL)
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goto error;
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}
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if (content != NULL) {
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ret->length = xmlStrlen(content);
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ret->content = xmlStrndup(content, ret->length);
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if (ret->content == NULL)
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goto error;
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} else {
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ret->length = 0;
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ret->content = NULL;
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@ -191,25 +155,49 @@ xmlCreateEntity(xmlDictPtr dict, const xmlChar *name, int type,
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ret->owner = 0;
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return(ret);
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error:
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xmlFreeEntity(ret);
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return(NULL);
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}
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/*
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* xmlAddEntity : register a new entity for an entities table.
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/**
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* xmlAddEntity:
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* @doc: the document
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* @extSubset: add to the external or internal subset
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* @name: the entity name
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* @type: the entity type XML_xxx_yyy_ENTITY
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* @ExternalID: the entity external ID if available
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* @SystemID: the entity system ID if available
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* @content: the entity content
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* @out: pointer to resulting entity (optional)
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*
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* Register a new entity for this document.
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*
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* Returns an xmlParserErrors error code.
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*/
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static xmlEntityPtr
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xmlAddEntity(xmlDtdPtr dtd, const xmlChar *name, int type,
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int
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xmlAddEntity(xmlDocPtr doc, int extSubset, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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const xmlChar *content, xmlEntityPtr *out) {
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xmlDtdPtr dtd;
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xmlDictPtr dict = NULL;
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xmlEntitiesTablePtr table = NULL;
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xmlEntityPtr ret, predef;
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int res;
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if (name == NULL)
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return(NULL);
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if (out != NULL)
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*out = NULL;
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if ((doc == NULL) || (name == NULL))
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return(XML_ERR_ARGUMENT);
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dict = doc->dict;
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if (extSubset)
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dtd = doc->extSubset;
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else
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dtd = doc->intSubset;
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if (dtd == NULL)
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return(NULL);
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if (dtd->doc != NULL)
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dict = dtd->doc->dict;
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return(XML_DTD_NO_DTD);
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switch (type) {
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case XML_INTERNAL_GENERAL_ENTITY:
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@ -246,41 +234,59 @@ xmlAddEntity(xmlDtdPtr dtd, const xmlChar *name, int type,
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}
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}
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}
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if (!valid) {
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xmlEntitiesWarn(XML_ERR_ENTITY_PROCESSING,
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"xmlAddEntity: invalid redeclaration of predefined"
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" entity '%s'", name);
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return(NULL);
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}
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if (!valid)
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return(XML_ERR_REDECL_PREDEF_ENTITY);
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}
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if (dtd->entities == NULL)
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if (dtd->entities == NULL) {
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dtd->entities = xmlHashCreateDict(0, dict);
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if (dtd->entities == NULL)
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return(XML_ERR_NO_MEMORY);
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}
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table = dtd->entities;
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break;
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case XML_INTERNAL_PARAMETER_ENTITY:
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case XML_EXTERNAL_PARAMETER_ENTITY:
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if (dtd->pentities == NULL)
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if (dtd->pentities == NULL) {
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dtd->pentities = xmlHashCreateDict(0, dict);
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if (dtd->pentities == NULL)
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return(XML_ERR_NO_MEMORY);
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}
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table = dtd->pentities;
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break;
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case XML_INTERNAL_PREDEFINED_ENTITY:
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return(NULL);
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return(XML_ERR_ARGUMENT);
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}
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if (table == NULL)
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return(NULL);
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ret = xmlCreateEntity(dict, name, type, ExternalID, SystemID, content);
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ret = xmlCreateEntity(dtd->doc, name, type, ExternalID, SystemID, content);
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if (ret == NULL)
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return(NULL);
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ret->doc = dtd->doc;
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return(XML_ERR_NO_MEMORY);
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if (xmlHashAddEntry(table, name, ret)) {
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res = xmlHashAdd(table, name, ret);
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if (res < 0) {
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xmlFreeEntity(ret);
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return(XML_ERR_NO_MEMORY);
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} else if (res == 0) {
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/*
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* entity was already defined at another level.
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*/
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xmlFreeEntity(ret);
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return(NULL);
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return(XML_WAR_ENTITY_REDEFINED);
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}
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return(ret);
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/*
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* Link it to the DTD
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*/
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ret->parent = dtd;
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ret->doc = dtd->doc;
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if (dtd->last == NULL) {
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dtd->children = dtd->last = (xmlNodePtr) ret;
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} else {
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dtd->last->next = (xmlNodePtr) ret;
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ret->prev = dtd->last;
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dtd->last = (xmlNodePtr) ret;
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}
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*out = ret;
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return(0);
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}
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/**
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@ -337,34 +343,8 @@ xmlAddDtdEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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xmlDtdPtr dtd;
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if (doc == NULL) {
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xmlEntitiesErr(XML_DTD_NO_DOC,
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"xmlAddDtdEntity: document is NULL");
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return(NULL);
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}
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if (doc->extSubset == NULL) {
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xmlEntitiesErr(XML_DTD_NO_DTD,
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"xmlAddDtdEntity: document without external subset");
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return(NULL);
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}
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dtd = doc->extSubset;
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ret = xmlAddEntity(dtd, name, type, ExternalID, SystemID, content);
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if (ret == NULL) return(NULL);
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/*
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* Link it to the DTD
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*/
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ret->parent = dtd;
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ret->doc = dtd->doc;
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if (dtd->last == NULL) {
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dtd->children = dtd->last = (xmlNodePtr) ret;
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} else {
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dtd->last->next = (xmlNodePtr) ret;
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ret->prev = dtd->last;
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dtd->last = (xmlNodePtr) ret;
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}
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xmlAddEntity(doc, 1, name, type, ExternalID, SystemID, content, &ret);
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return(ret);
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}
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@ -386,34 +366,8 @@ xmlAddDocEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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xmlDtdPtr dtd;
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if (doc == NULL) {
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xmlEntitiesErr(XML_DTD_NO_DOC,
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"xmlAddDocEntity: document is NULL");
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return(NULL);
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}
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if (doc->intSubset == NULL) {
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xmlEntitiesErr(XML_DTD_NO_DTD,
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"xmlAddDocEntity: document without internal subset");
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return(NULL);
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}
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dtd = doc->intSubset;
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ret = xmlAddEntity(dtd, name, type, ExternalID, SystemID, content);
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if (ret == NULL) return(NULL);
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/*
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* Link it to the DTD
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*/
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ret->parent = dtd;
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ret->doc = dtd->doc;
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if (dtd->last == NULL) {
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dtd->children = dtd->last = (xmlNodePtr) ret;
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} else {
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dtd->last->next = (xmlNodePtr) ret;
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ret->prev = dtd->last;
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dtd->last = (xmlNodePtr) ret;
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}
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xmlAddEntity(doc, 0, name, type, ExternalID, SystemID, content, &ret);
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return(ret);
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}
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@ -438,21 +392,10 @@ xmlEntityPtr
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xmlNewEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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xmlDictPtr dict;
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if ((doc != NULL) && (doc->intSubset != NULL)) {
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return(xmlAddDocEntity(doc, name, type, ExternalID, SystemID, content));
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}
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if (doc != NULL)
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dict = doc->dict;
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else
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dict = NULL;
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ret = xmlCreateEntity(dict, name, type, ExternalID, SystemID, content);
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if (ret == NULL)
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return(NULL);
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ret->doc = doc;
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return(ret);
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return(xmlCreateEntity(doc, name, type, ExternalID, SystemID, content));
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}
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/**
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@ -604,10 +547,8 @@ xmlEncodeEntitiesInternal(xmlDocPtr doc, const xmlChar *input, int attr) {
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*/
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buffer_size = 1000;
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buffer = (xmlChar *) xmlMalloc(buffer_size);
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if (buffer == NULL) {
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xmlEntitiesErrMemory("xmlEncodeEntities: malloc failed");
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if (buffer == NULL)
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return(NULL);
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}
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out = buffer;
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while (*cur != '\0') {
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@ -707,47 +648,12 @@ xmlEncodeEntitiesInternal(xmlDocPtr doc, const xmlChar *input, int attr) {
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* cur[3] is 10xxxxxx if cur[0] is 1111xxxx
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* cur[0] is not 11111xxx
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*/
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char buf[11], *ptr;
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int val = 0, l = 1;
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char buf[13], *ptr;
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int val, l;
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if (((cur[0] & 0xC0) != 0xC0) ||
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((cur[1] & 0xC0) != 0x80) ||
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(((cur[0] & 0xE0) == 0xE0) && ((cur[2] & 0xC0) != 0x80)) ||
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(((cur[0] & 0xF0) == 0xF0) && ((cur[3] & 0xC0) != 0x80)) ||
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(((cur[0] & 0xF8) == 0xF8))) {
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xmlEntitiesErr(XML_CHECK_NOT_UTF8,
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"xmlEncodeEntities: input not UTF-8");
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snprintf(buf, sizeof(buf), "&#%d;", *cur);
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buf[sizeof(buf) - 1] = 0;
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ptr = buf;
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while (*ptr != 0) *out++ = *ptr++;
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cur++;
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continue;
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} else if (*cur < 0xE0) {
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val = (cur[0]) & 0x1F;
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val <<= 6;
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val |= (cur[1]) & 0x3F;
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l = 2;
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} else if (*cur < 0xF0) {
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val = (cur[0]) & 0x0F;
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val <<= 6;
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val |= (cur[1]) & 0x3F;
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val <<= 6;
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val |= (cur[2]) & 0x3F;
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l = 3;
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} else if (*cur < 0xF8) {
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val = (cur[0]) & 0x07;
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val <<= 6;
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val |= (cur[1]) & 0x3F;
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val <<= 6;
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val |= (cur[2]) & 0x3F;
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val <<= 6;
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val |= (cur[3]) & 0x3F;
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l = 4;
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}
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if ((l == 1) || (!IS_CHAR(val))) {
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xmlEntitiesErr(XML_ERR_INVALID_CHAR,
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"xmlEncodeEntities: char out of range\n");
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l = 4;
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val = xmlGetUTF8Char(cur, &l);
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if ((val < 0) || (!IS_CHAR(val))) {
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snprintf(buf, sizeof(buf), "&#%d;", *cur);
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buf[sizeof(buf) - 1] = 0;
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ptr = buf;
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@ -779,7 +685,6 @@ xmlEncodeEntitiesInternal(xmlDocPtr doc, const xmlChar *input, int attr) {
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return(buffer);
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mem_error:
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xmlEntitiesErrMemory("xmlEncodeEntities: realloc failed");
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xmlFree(buffer);
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return(NULL);
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}
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@ -840,10 +745,8 @@ xmlEncodeSpecialChars(const xmlDoc *doc ATTRIBUTE_UNUSED, const xmlChar *input)
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*/
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buffer_size = 1000;
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buffer = (xmlChar *) xmlMalloc(buffer_size);
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if (buffer == NULL) {
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xmlEntitiesErrMemory("xmlEncodeSpecialChars: malloc failed");
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if (buffer == NULL)
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return(NULL);
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}
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out = buffer;
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while (*cur != '\0') {
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@ -899,7 +802,6 @@ xmlEncodeSpecialChars(const xmlDoc *doc ATTRIBUTE_UNUSED, const xmlChar *input)
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return(buffer);
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mem_error:
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xmlEntitiesErrMemory("xmlEncodeSpecialChars: realloc failed");
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xmlFree(buffer);
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return(NULL);
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}
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@ -956,27 +858,47 @@ xmlCopyEntity(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
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xmlEntityPtr cur;
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cur = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
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if (cur == NULL) {
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xmlEntitiesErrMemory("xmlCopyEntity:: malloc failed");
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if (cur == NULL)
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return(NULL);
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}
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memset(cur, 0, sizeof(xmlEntity));
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cur->type = XML_ENTITY_DECL;
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cur->etype = ent->etype;
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if (ent->name != NULL)
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if (ent->name != NULL) {
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cur->name = xmlStrdup(ent->name);
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if (ent->ExternalID != NULL)
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if (cur->name == NULL)
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goto error;
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}
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if (ent->ExternalID != NULL) {
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cur->ExternalID = xmlStrdup(ent->ExternalID);
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if (ent->SystemID != NULL)
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if (cur->ExternalID == NULL)
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goto error;
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}
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if (ent->SystemID != NULL) {
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cur->SystemID = xmlStrdup(ent->SystemID);
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if (ent->content != NULL)
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if (cur->SystemID == NULL)
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goto error;
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}
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if (ent->content != NULL) {
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cur->content = xmlStrdup(ent->content);
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if (ent->orig != NULL)
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if (cur->content == NULL)
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goto error;
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}
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if (ent->orig != NULL) {
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cur->orig = xmlStrdup(ent->orig);
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if (ent->URI != NULL)
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if (cur->orig == NULL)
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goto error;
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}
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if (ent->URI != NULL) {
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cur->URI = xmlStrdup(ent->URI);
|
||||
if (cur->URI == NULL)
|
||||
goto error;
|
||||
}
|
||||
return(cur);
|
||||
|
||||
error:
|
||||
xmlFreeEntity(cur);
|
||||
return(NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -989,7 +911,7 @@ xmlCopyEntity(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
|
||||
*/
|
||||
xmlEntitiesTablePtr
|
||||
xmlCopyEntitiesTable(xmlEntitiesTablePtr table) {
|
||||
return(xmlHashCopy(table, xmlCopyEntity));
|
||||
return(xmlHashCopySafe(table, xmlCopyEntity, xmlFreeEntityWrapper));
|
||||
}
|
||||
#endif /* LIBXML_TREE_ENABLED */
|
||||
|
||||
@ -1116,8 +1038,7 @@ xmlDumpEntityDecl(xmlBufferPtr buf, xmlEntityPtr ent) {
|
||||
xmlBufferWriteChar(buf, ">\n");
|
||||
break;
|
||||
default:
|
||||
xmlEntitiesErr(XML_DTD_UNKNOWN_ENTITY,
|
||||
"xmlDumpEntitiesDecl: internal: unknown type entity type");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -87,6 +87,15 @@ XMLPUBFUN xmlEntityPtr
|
||||
const xmlChar *content);
|
||||
XMLPUBFUN void
|
||||
xmlFreeEntity (xmlEntityPtr entity);
|
||||
XMLPUBFUN int
|
||||
xmlAddEntity (xmlDocPtr doc,
|
||||
int extSubset,
|
||||
const xmlChar *name,
|
||||
int type,
|
||||
const xmlChar *ExternalID,
|
||||
const xmlChar *SystemID,
|
||||
const xmlChar *content,
|
||||
xmlEntityPtr *out);
|
||||
XMLPUBFUN xmlEntityPtr
|
||||
xmlAddDocEntity (xmlDocPtr doc,
|
||||
const xmlChar *name,
|
||||
|
||||
@ -1 +0,0 @@
|
||||
warning : xmlAddEntity: invalid redeclaration of predefined entity 'lt'
|
||||
@ -1 +0,0 @@
|
||||
warning : xmlAddEntity: invalid redeclaration of predefined entity 'lt'
|
||||
@ -1 +0,0 @@
|
||||
warning : xmlAddEntity: invalid redeclaration of predefined entity 'lt'
|
||||
Loading…
x
Reference in New Issue
Block a user