int p_get_xcap_doc(str* user, str* domain, int type, str** doc)
{
str *etag = NULL;
if (xcapDbGetDoc(user, domain, type, NULL, NULL, doc, &etag) < 0)
{
LM_ERR("whie fetching XCAP document from DB\n");
return -1;
}
if (*doc == NULL)
{
if(integrated_xcap_server)
return 0;
if (http_get_xcap_doc(user, domain, type, doc) < 0)
return 0;
}
pkg_free(etag->s);
pkg_free(etag);
return 0;
}
/*
* Function that searches a resource list document for the user and then
* looks in the document for the service uri
* returns:
* 0: success ( service uri found)
* -1: server error
* doc :
* NULL: document or service uri not found
* pointer to xmlDocPtr structure if service uri found
* */
int get_resource_list(str* service_uri, str owner_user, str owner_domain,
xmlNodePtr* service_node, xmlDocPtr* rl_doc)
{
str *doc = NULL;
str *etag = NULL;
xmlDocPtr xml_doc = NULL;
xmlNodePtr snode = NULL;
*rl_doc = NULL;
*service_node = NULL;
if (xcapDbGetDoc(&owner_user, &owner_domain, RLS_SERVICES, NULL, NULL, &doc, &etag) < 0)
{
LM_ERR("while getting RLS document from DB\n");
goto error;
}
if (doc == NULL)
{
LM_DBG("No rl document found in database\n");
if (rls_integrated_xcap_server)
goto done;
/* Use xcap_client to try to fetch the document */
if (http_get_resource_list(&owner_user, &owner_domain, &doc) < 0)
goto done;
}
/* Document is loaded in doc either via DB or HTTP */
LM_DBG("rls_services document:\n%.*s\n", doc->len, doc->s);
xml_doc = xmlParseMemory(doc->s, doc->len);
if(xml_doc == NULL)
{
LM_ERR("while parsing XML memory\n");
goto error;
}
snode = search_service_uri(xml_doc, service_uri);
if (snode == NULL)
{
LM_DBG("service uri %.*s not found in rl document for user"
" sip:%.*s@%.*s\n", service_uri->len, service_uri->s,
owner_user.len, owner_user.s, owner_domain.len, owner_domain.s);
xmlFreeDoc(xml_doc);
goto done;
}
*rl_doc = xml_doc;
*service_node = snode;
done:
if (doc != NULL)
{
if (doc->s != NULL)
pkg_free(doc->s);
pkg_free(doc);
}
if (etag != NULL)
{
if (etag->s != NULL)
pkg_free(etag->s);
pkg_free(etag);
}
return 0;
error:
if (doc != NULL)
{
if (doc->s != NULL)
pkg_free(doc->s);
pkg_free(doc);
}
if (etag != NULL)
{
if (etag->s != NULL)
pkg_free(etag->s);
pkg_free(etag);
}
if(xml_doc)
xmlFreeDoc(xml_doc);
return -1;
}
static inline int get_resource_list(str *username, str *domain, str *filename, str *selector,
xmlNodePtr *rl_node, xmlDocPtr *xmldoc)
{
static char path_buf[MAX_PATH_LEN+1];
int checked = 0;
str path;
str *doc = NULL;
str *etag = NULL;
xmlXPathContextPtr xpathCtx = NULL;
xmlXPathObjectPtr xpathObj = NULL;
if (filename==NULL || username==NULL || domain==NULL)
{
LM_ERR("invalid parameters\n");
return -1;
}
if (xcapDbGetDoc(username, domain, RESOURCE_LISTS, filename, NULL, &doc, &etag) < 0)
{
LM_DBG("No rl document found\n");
return -1;
}
LM_DBG("rl document:\n%.*s\n", doc->len, doc->s);
path.s = path_buf;
path.len = 0;
if (selector->s) {
while (checked < selector->len && path.len <= MAX_PATH_LEN)
{
if (selector->s[checked] == '/')
{
memcpy(path.s+path.len, "/xmlns:", 7);
path.len += 7;
}
else
{
path.s[path.len++] = selector->s[checked];
}
checked++;
}
path.s[path.len] = '\0';
LM_DBG("path: %.*s", path.len, path.s);
}
*xmldoc = xmlParseMemory(doc->s, doc->len);
if (*xmldoc == NULL)
{
LM_ERR("while parsing XML memory\n");
goto error;
}
if(path.len == 0)
{
LM_ERR("no path specified\n");
goto error;
}
/* TODO: move this to xcap module? */
xpathCtx = xmlXPathNewContext(*xmldoc);
if (xpathCtx == NULL)
{
LM_ERR("unable to create new XPath context");
goto error;
}
if (xmlXPathRegisterNs(xpathCtx, BAD_CAST "xmlns", BAD_CAST "urn:ietf:params:xml:ns:resource-lists") != 0)
{
LM_ERR("unable to register xmlns\n");
goto error;
}
xpathObj = xmlXPathEvalExpression(BAD_CAST path.s, xpathCtx);
if (xpathObj == NULL)
{
LM_ERR("unable to evaluate path\n");
goto error;
}
if (xpathObj->nodesetval == NULL || xpathObj->nodesetval->nodeNr <= 0)
{
LM_ERR("no nodes found\n");
goto error;
}
if (xpathObj->nodesetval->nodeTab[0] != NULL && xpathObj->nodesetval->nodeTab[0]->type != XML_ELEMENT_NODE)
{
LM_ERR("no nodes of the correct type found\n");
goto error;
}
*rl_node = xpathObj->nodesetval->nodeTab[0];
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
pkg_free(doc->s);
pkg_free(doc);
pkg_free(etag->s);
pkg_free(etag);
return 0;
error:
if (doc != NULL)
{
if (doc->s != NULL)
pkg_free(doc->s);
pkg_free(doc);
}
if (etag != NULL)
{
if (etag->s != NULL)
pkg_free(etag->s);
pkg_free(etag);
}
if (xpathObj)
xmlXPathFreeObject(xpathObj);
if (xpathCtx)
xmlXPathFreeContext(xpathCtx);
if (*xmldoc)
xmlFreeDoc(*xmldoc);
return -1;
}
