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cleanup cleanup too added xmlNoNetExternalEntityLoader() from xsltproc

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* Makefile.am: cleanup
* threads.c: cleanup too
* xmlIO.c include/libxml/xmlIO.h: added xmlNoNetExternalEntityLoader()
  from xsltproc
* include/libxml/tree.h include/libxml/parser.h: trying to break a
  dependancy loop.
Daniel
This commit is contained in:
Daniel Veillard
2001-10-31 17:52:43 +00:00
parent 91c0040ace
commit 8bdb91dd5c
7 changed files with 166 additions and 8 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
Wed Oct 31 18:50:08 CET 2001 Daniel Veillard <daniel@veillard.com>
* Makefile.am: cleanup
* threads.c: cleanup too
* xmlIO.c include/libxml/xmlIO.h: added xmlNoNetExternalEntityLoader()
from xsltproc
* include/libxml/tree.h include/libxml/parser.h: trying to break a
dependancy loop.
Tue Oct 30 18:38:53 CET 2001 Daniel Veillard <daniel@veillard.com>
* catalog.c: Justin Fletcher pointed out that xmlParseXMLCatalog

2
Makefile.am
View File

@ -443,7 +443,7 @@ Threadtests : testThreads
@echo "##"
@echo "## Threaded regression tests"
@echo "##"
testThreads
$(top_builddir)/testThreads
SAXtests : testSAX
@(echo > .memdump)

7
include/libxml/parser.h
View File

@ -11,8 +11,9 @@
#include <libxml/tree.h>
#include <libxml/valid.h>
#include <libxml/xmlIO.h>
#include <libxml/entities.h>
#include <libxml/encoding.h>
#include <libxml/xmlIO.h>
#ifdef __cplusplus
extern "C" {
@ -38,8 +39,6 @@ extern "C" {
typedef void (* xmlParserInputDeallocate)(xmlChar *);
typedef struct _xmlParserInput xmlParserInput;
typedef xmlParserInput *xmlParserInputPtr;
struct _xmlParserInput {
/* Input buffer */
xmlParserInputBufferPtr buf; /* UTF-8 encoded buffer */
@ -141,8 +140,6 @@ typedef enum {
* takes as the only argument the parser context pointer, so migrating
* to a state based parser for progressive parsing shouldn't be too hard.
*/
typedef struct _xmlParserCtxt xmlParserCtxt;
typedef xmlParserCtxt *xmlParserCtxtPtr;
struct _xmlParserCtxt {
struct _xmlSAXHandler *sax; /* The SAX handler */
void *userData; /* For SAX interface only, used by DOM build */

14
include/libxml/tree.h
View File

@ -25,6 +25,20 @@
extern "C" {
#endif
/*
* Some of the basic types pointer to structures:
*/
/* xmlIO.h */
typedef struct _xmlParserInputBuffer xmlParserInputBuffer;
typedef xmlParserInputBuffer *xmlParserInputBufferPtr;
/* parser.h */
typedef struct _xmlParserInput xmlParserInput;
typedef xmlParserInput *xmlParserInputPtr;
typedef struct _xmlParserCtxt xmlParserCtxt;
typedef xmlParserCtxt *xmlParserCtxtPtr;
#define BASE_BUFFER_SIZE 4000
/**

9
include/libxml/xmlIO.h
View File

@ -35,8 +35,6 @@ typedef void * (*xmlInputOpenCallback) (char const *filename);
typedef int (*xmlInputReadCallback) (void * context, char * buffer, int len);
typedef int (*xmlInputCloseCallback) (void * context);
typedef struct _xmlParserInputBuffer xmlParserInputBuffer;
typedef xmlParserInputBuffer *xmlParserInputBufferPtr;
struct _xmlParserInputBuffer {
void* context;
xmlInputReadCallback readcallback;
@ -189,6 +187,13 @@ void xmlNodeDumpOutput (xmlOutputBufferPtr buf,
void htmlDocContentDumpOutput(xmlOutputBufferPtr buf,
xmlDocPtr cur,
const char *encoding);
/*
* A predefined entity loader disabling network accesses
*/
xmlParserInputPtr xmlNoNetExternalEntityLoader(const char *URL,
const char *ID,
xmlParserCtxtPtr ctxt);
#ifdef __cplusplus
}
#endif

2
threads.c
View File

@ -248,6 +248,7 @@ xmlRMutexUnlock(xmlRMutexPtr tok)
* *
************************************************************************/
#ifdef LIBXML_THREAD_ENABLED
/**
* xmlFreeGlobalState:
* @state: a thread global state
@ -283,6 +284,7 @@ xmlNewGlobalState(void)
xmlInitializeGlobalState(gs);
return (gs);
}
#endif /* LIBXML_THREAD_ENABLED */
/**

131
xmlIO.c
View File

@ -2596,3 +2596,134 @@ xmlLoadExternalEntity(const char *URL, const char *ID,
return(xmlCurrentExternalEntityLoader(URL, ID, ctxt));
}
/************************************************************************
* *
* Disabling Network access *
* *
************************************************************************/
#ifdef LIBXML_CATALOG_ENABLED
static int
xmlNoNetExists(const char *URL)
{
#ifdef HAVE_STAT
int ret;
struct stat info;
const char *path;
if (URL == NULL)
return (0);
if (!xmlStrncmp(BAD_CAST URL, BAD_CAST "file://localhost", 16))
path = &URL[16];
else if (!xmlStrncmp(BAD_CAST URL, BAD_CAST "file:///", 8)) {
#ifdef _WIN32
path = &URL[8];
#else
path = &URL[7];
#endif
} else
path = URL;
ret = stat(path, &info);
if (ret == 0)
return (1);
#endif
return (0);
}
#endif
/**
* xmlNoNetExternalEntityLoader:
* @URL: the URL for the entity to load
* @ID: the System ID for the entity to load
* @ctxt: the context in which the entity is called or NULL
*
* A specific entity loader disabling network accesses, though still
* allowing local catalog accesses for resolution.
*
* Returns a new allocated xmlParserInputPtr, or NULL.
*/
xmlParserInputPtr
xmlNoNetExternalEntityLoader(const char *URL, const char *ID,
xmlParserCtxtPtr ctxt) {
xmlParserInputPtr input = NULL;
xmlChar *resource = NULL;
#ifdef LIBXML_CATALOG_ENABLED
xmlCatalogAllow pref;
/*
* If the resource doesn't exists as a file,
* try to load it from the resource pointed in the catalogs
*/
pref = xmlCatalogGetDefaults();
if ((pref != XML_CATA_ALLOW_NONE) && (!xmlNoNetExists(URL))) {
/*
* Do a local lookup
*/
if ((ctxt->catalogs != NULL) &&
((pref == XML_CATA_ALLOW_ALL) ||
(pref == XML_CATA_ALLOW_DOCUMENT))) {
resource = xmlCatalogLocalResolve(ctxt->catalogs,
(const xmlChar *)ID,
(const xmlChar *)URL);
}
/*
* Try a global lookup
*/
if ((resource == NULL) &&
((pref == XML_CATA_ALLOW_ALL) ||
(pref == XML_CATA_ALLOW_GLOBAL))) {
resource = xmlCatalogResolve((const xmlChar *)ID,
(const xmlChar *)URL);
}
if ((resource == NULL) && (URL != NULL))
resource = xmlStrdup((const xmlChar *) URL);
/*
* TODO: do an URI lookup on the reference
*/
if ((resource != NULL) && (!xmlNoNetExists((const char *)resource))) {
xmlChar *tmp = NULL;
if ((ctxt->catalogs != NULL) &&
((pref == XML_CATA_ALLOW_ALL) ||
(pref == XML_CATA_ALLOW_DOCUMENT))) {
tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource);
}
if ((tmp == NULL) &&
((pref == XML_CATA_ALLOW_ALL) ||
(pref == XML_CATA_ALLOW_GLOBAL))) {
tmp = xmlCatalogResolveURI(resource);
}
if (tmp != NULL) {
xmlFree(resource);
resource = tmp;
}
}
}
#endif
if (resource == NULL)
resource = (xmlChar *) URL;
if (resource != NULL) {
if ((!xmlStrncasecmp((const xmlChar *) resource,
(const xmlChar *) "ftp://", 6)) ||
(!xmlStrncasecmp((const xmlChar *) resource,
(const xmlChar *) "http://", 7))) {
xmlGenericError(xmlGenericErrorContext,
"Attempt to load network entity %s \n", resource);
if (resource != (xmlChar *) URL)
xmlFree(resource);
return(NULL);
}
}
input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt);
if (resource != (xmlChar *) URL)
xmlFree(resource);
return(input);
}