This introduces usage of an additional libxslt cleanup function, xsltCleanupGlobals, when the configure script detects that it is available. Early versions of the library did not include this function. (closes issue ASTERISK-22570) Reported by: Corey Farrell Patches: xsltCleanupGlobals.patch uploaded by Corey Farrell (License 5909) ........ Merged revisions 400384 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400385 65c4cc65-6c06-0410-ace0-fbb531ad65f3
387 lines
8 KiB
C
387 lines
8 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 2008, Eliel C. Sardanons (LU1ALY) <eliels@gmail.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
*
|
|
* \brief XML abstraction layer
|
|
*
|
|
* \author Eliel C. Sardanons (LU1ALY) <eliels@gmail.com>
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
#include "asterisk/xml.h"
|
|
#include "asterisk/logger.h"
|
|
#include "asterisk/utils.h"
|
|
#include "asterisk/autoconfig.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#if defined(HAVE_LIBXML2)
|
|
#include <libxml/parser.h>
|
|
#include <libxml/tree.h>
|
|
#include <libxml/xinclude.h>
|
|
#include <libxml/xpath.h>
|
|
/* libxml2 ast_xml implementation. */
|
|
#ifdef HAVE_LIBXSLT
|
|
#include <libxslt/xsltInternals.h>
|
|
#include <libxslt/transform.h>
|
|
#endif /* HAVE_LIBXSLT */
|
|
|
|
|
|
int ast_xml_init(void)
|
|
{
|
|
LIBXML_TEST_VERSION
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ast_xml_finish(void)
|
|
{
|
|
xmlCleanupParser();
|
|
#ifdef HAVE_LIBXSLT_CLEANUP
|
|
xsltCleanupGlobals();
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct ast_xml_doc *ast_xml_open(char *filename)
|
|
{
|
|
xmlDoc *doc;
|
|
|
|
if (!filename) {
|
|
return NULL;
|
|
}
|
|
|
|
doc = xmlReadFile(filename, NULL, XML_PARSE_RECOVER);
|
|
if (!doc) {
|
|
return NULL;
|
|
}
|
|
|
|
/* process xinclude elements. */
|
|
if (xmlXIncludeProcess(doc) < 0) {
|
|
xmlFreeDoc(doc);
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef HAVE_LIBXSLT
|
|
{
|
|
xsltStylesheetPtr xslt = xsltLoadStylesheetPI(doc);
|
|
if (xslt) {
|
|
xmlDocPtr tmpdoc = xsltApplyStylesheet(xslt, doc, NULL);
|
|
xsltFreeStylesheet(xslt);
|
|
xmlFreeDoc(doc);
|
|
if (!tmpdoc) {
|
|
return NULL;
|
|
}
|
|
doc = tmpdoc;
|
|
}
|
|
}
|
|
#else /* no HAVE_LIBXSLT */
|
|
ast_log(LOG_NOTICE, "XSLT support not found. XML documentation may be incomplete.\n");
|
|
#endif /* HAVE_LIBXSLT */
|
|
|
|
return (struct ast_xml_doc *) doc;
|
|
}
|
|
|
|
struct ast_xml_doc *ast_xml_new(void)
|
|
{
|
|
xmlDoc *doc;
|
|
|
|
doc = xmlNewDoc((const xmlChar *) "1.0");
|
|
return (struct ast_xml_doc *) doc;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_new_node(const char *name)
|
|
{
|
|
xmlNode *node;
|
|
if (!name) {
|
|
return NULL;
|
|
}
|
|
|
|
node = xmlNewNode(NULL, (const xmlChar *) name);
|
|
|
|
return (struct ast_xml_node *) node;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_new_child(struct ast_xml_node *parent, const char *child_name)
|
|
{
|
|
xmlNode *child;
|
|
|
|
if (!parent || !child_name) {
|
|
return NULL;
|
|
}
|
|
|
|
child = xmlNewChild((xmlNode *) parent, NULL, (const xmlChar *) child_name, NULL);
|
|
return (struct ast_xml_node *) child;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_add_child(struct ast_xml_node *parent, struct ast_xml_node *child)
|
|
{
|
|
if (!parent || !child) {
|
|
return NULL;
|
|
}
|
|
return (struct ast_xml_node *) xmlAddChild((xmlNode *) parent, (xmlNode *) child);
|
|
}
|
|
|
|
struct ast_xml_doc *ast_xml_read_memory(char *buffer, size_t size)
|
|
{
|
|
xmlDoc *doc;
|
|
|
|
if (!buffer) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!(doc = xmlParseMemory(buffer, (int) size))) {
|
|
/* process xinclude elements. */
|
|
if (xmlXIncludeProcess(doc) < 0) {
|
|
xmlFreeDoc(doc);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return (struct ast_xml_doc *) doc;
|
|
}
|
|
|
|
void ast_xml_close(struct ast_xml_doc *doc)
|
|
{
|
|
if (!doc) {
|
|
return;
|
|
}
|
|
|
|
xmlFreeDoc((xmlDoc *) doc);
|
|
doc = NULL;
|
|
}
|
|
|
|
void ast_xml_set_root(struct ast_xml_doc *doc, struct ast_xml_node *node)
|
|
{
|
|
if (!doc || !node) {
|
|
return;
|
|
}
|
|
|
|
xmlDocSetRootElement((xmlDoc *) doc, (xmlNode *) node);
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_get_root(struct ast_xml_doc *doc)
|
|
{
|
|
xmlNode *root_node;
|
|
|
|
if (!doc) {
|
|
return NULL;
|
|
}
|
|
|
|
root_node = xmlDocGetRootElement((xmlDoc *) doc);
|
|
|
|
return (struct ast_xml_node *) root_node;
|
|
}
|
|
|
|
void ast_xml_free_node(struct ast_xml_node *node)
|
|
{
|
|
if (!node) {
|
|
return;
|
|
}
|
|
|
|
xmlFreeNode((xmlNode *) node);
|
|
node = NULL;
|
|
}
|
|
|
|
void ast_xml_free_attr(const char *attribute)
|
|
{
|
|
if (attribute) {
|
|
xmlFree((char *) attribute);
|
|
}
|
|
}
|
|
|
|
void ast_xml_free_text(const char *text)
|
|
{
|
|
if (text) {
|
|
xmlFree((char *) text);
|
|
}
|
|
}
|
|
|
|
const char *ast_xml_get_attribute(struct ast_xml_node *node, const char *attrname)
|
|
{
|
|
xmlChar *attrvalue;
|
|
|
|
if (!node) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!attrname) {
|
|
return NULL;
|
|
}
|
|
|
|
attrvalue = xmlGetProp((xmlNode *) node, (xmlChar *) attrname);
|
|
|
|
return (const char *) attrvalue;
|
|
}
|
|
|
|
int ast_xml_set_attribute(struct ast_xml_node *node, const char *name, const char *value)
|
|
{
|
|
if (!name || !value) {
|
|
return -1;
|
|
}
|
|
|
|
if (!xmlSetProp((xmlNode *) node, (xmlChar *) name, (xmlChar *) value)) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_find_element(struct ast_xml_node *root_node, const char *name, const char *attrname, const char *attrvalue)
|
|
{
|
|
struct ast_xml_node *cur;
|
|
const char *attr;
|
|
|
|
if (!root_node) {
|
|
return NULL;
|
|
}
|
|
|
|
for (cur = root_node; cur; cur = ast_xml_node_get_next(cur)) {
|
|
/* Check if the name matchs */
|
|
if (strcmp(ast_xml_node_get_name(cur), name)) {
|
|
continue;
|
|
}
|
|
/* We need to check for a specific attribute name? */
|
|
if (!attrname || !attrvalue) {
|
|
return cur;
|
|
}
|
|
/* Get the attribute, we need to compare it. */
|
|
if ((attr = ast_xml_get_attribute(cur, attrname))) {
|
|
/* does attribute name/value matches? */
|
|
if (!strcmp(attr, attrvalue)) {
|
|
ast_xml_free_attr(attr);
|
|
return cur;
|
|
}
|
|
ast_xml_free_attr(attr);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct ast_xml_doc *ast_xml_get_doc(struct ast_xml_node *node)
|
|
{
|
|
if (!node) {
|
|
return NULL;
|
|
}
|
|
|
|
return (struct ast_xml_doc *) ((xmlNode *)node)->doc;
|
|
}
|
|
|
|
struct ast_xml_ns *ast_xml_find_namespace(struct ast_xml_doc *doc, struct ast_xml_node *node, const char *ns_name) {
|
|
xmlNsPtr ns = xmlSearchNs((xmlDocPtr) doc, (xmlNodePtr) node, (xmlChar *) ns_name);
|
|
return (struct ast_xml_ns *) ns;
|
|
}
|
|
|
|
const char *ast_xml_get_ns_href(struct ast_xml_ns *ns)
|
|
{
|
|
return (const char *) ((xmlNsPtr) ns)->href;
|
|
}
|
|
|
|
const char *ast_xml_get_text(struct ast_xml_node *node)
|
|
{
|
|
if (!node) {
|
|
return NULL;
|
|
}
|
|
|
|
return (const char *) xmlNodeGetContent((xmlNode *) node);
|
|
}
|
|
|
|
void ast_xml_set_text(struct ast_xml_node *node, const char *content)
|
|
{
|
|
if (!node || !content) {
|
|
return;
|
|
}
|
|
|
|
xmlNodeSetContent((xmlNode *) node, (const xmlChar *) content);
|
|
}
|
|
|
|
int ast_xml_doc_dump_file(FILE *output, struct ast_xml_doc *doc)
|
|
{
|
|
return xmlDocDump(output, (xmlDocPtr)doc);
|
|
}
|
|
|
|
const char *ast_xml_node_get_name(struct ast_xml_node *node)
|
|
{
|
|
return (const char *) ((xmlNode *) node)->name;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_node_get_children(struct ast_xml_node *node)
|
|
{
|
|
return (struct ast_xml_node *) ((xmlNode *) node)->children;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_node_get_next(struct ast_xml_node *node)
|
|
{
|
|
return (struct ast_xml_node *) ((xmlNode *) node)->next;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_node_get_prev(struct ast_xml_node *node)
|
|
{
|
|
return (struct ast_xml_node *) ((xmlNode *) node)->prev;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_node_get_parent(struct ast_xml_node *node)
|
|
{
|
|
return (struct ast_xml_node *) ((xmlNode *) node)->parent;
|
|
}
|
|
|
|
struct ast_xml_node *ast_xml_xpath_get_first_result(struct ast_xml_xpath_results *results)
|
|
{
|
|
return (struct ast_xml_node *) ((xmlXPathObjectPtr) results)->nodesetval->nodeTab[0];
|
|
}
|
|
|
|
void ast_xml_xpath_results_free(struct ast_xml_xpath_results *results)
|
|
{
|
|
xmlXPathFreeObject((xmlXPathObjectPtr) results);
|
|
}
|
|
|
|
int ast_xml_xpath_num_results(struct ast_xml_xpath_results *results)
|
|
{
|
|
return ((xmlXPathObjectPtr) results)->nodesetval->nodeNr;
|
|
}
|
|
|
|
struct ast_xml_xpath_results *ast_xml_query(struct ast_xml_doc *doc, const char *xpath_str)
|
|
{
|
|
xmlXPathContextPtr context;
|
|
xmlXPathObjectPtr result;
|
|
if (!(context = xmlXPathNewContext((xmlDoc *) doc))) {
|
|
ast_log(LOG_ERROR, "Could not create XPath context!\n");
|
|
return NULL;
|
|
}
|
|
result = xmlXPathEvalExpression((xmlChar *) xpath_str, context);
|
|
xmlXPathFreeContext(context);
|
|
if (!result) {
|
|
ast_log(LOG_WARNING, "Error for query: %s\n", xpath_str);
|
|
return NULL;
|
|
}
|
|
if (xmlXPathNodeSetIsEmpty(result->nodesetval)) {
|
|
xmlXPathFreeObject(result);
|
|
ast_debug(5, "No results for query: %s\n", xpath_str);
|
|
return NULL;
|
|
}
|
|
return (struct ast_xml_xpath_results *) result;
|
|
}
|
|
|
|
#endif /* defined(HAVE_LIBXML2) */
|
|
|