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/******************************************************************************
* Copyright (c) 2000-2021 Ericsson Telecom AB
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
*
* Contributors:
* Balasko, Jeno
* Baranyi, Botond
* Ormandi, Matyas
* Raduly, Csaba
* Szabo, Bence Janos
*
******************************************************************************/
#define DEFINE_XER_STRUCT
#include "XER.hh"
//#include <libxml/xmlreader.h>
#include "XmlReader.hh"
#include "Module_list.hh"
// FIXME: there ought to be a better way than this
static const char indent_buffer[] =
// --------------------------- 32 ----------------------------- ||
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //1
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //2
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //3
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //4
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //5
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //6
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //7
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //8
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //9
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //10
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //11
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //12
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //13
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //14
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" //15
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";//16
// FIXME do_indent's level should be size_t, but there were plans of passing negative values
int do_indent(TTCN_Buffer& buf, int level)
{
if (level > 0 && level < (int)sizeof(indent_buffer)) {
buf.put_s((size_t)level, (const unsigned char*)indent_buffer);
}
return level;
}
const char* verify_name(XmlReaderWrap& reader, const XERdescriptor_t& p_td, boolean exer)
{
const char *name = (const char*)reader.LocalName();
const namespace_t *expected_ns = 0;
if (p_td.my_module != 0 && p_td.ns_index != -1) {
expected_ns = p_td.my_module->get_ns((size_t)p_td.ns_index);
}
if (0 == name) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"NULL XML name instead of `%.*s'",
p_td.namelens[exer]-2, p_td.names[exer]);
}
if (!check_name(name, p_td, exer)) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Bad XML tag `%s' instead of `%.*s'",
name, p_td.namelens[exer]-2, p_td.names[exer]);
}
if (exer) { // XML namespaces only apply to EXER
const char *prefix = (const char*)reader.Prefix(); // may be NULL
const char *nsuri = (const char*)reader.NamespaceUri(); // NULL if no ns
if (expected_ns == 0) { // get_ns was not called
if (nsuri != 0) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Unexpected namespace '%s' (%s)", nsuri, prefix ? prefix : "");
}
}
else { // a namespace was expected
if (p_td.xer_bits & FORM_UNQUALIFIED) {
if (prefix && *prefix) TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Unexpected prefix '%s'", prefix);
}
else {
if (nsuri == 0) { // XML node has no namespace
if (p_td.my_module->get_ns((size_t)p_td.ns_index)->px[0] != 0) { // and module has namespace prefix
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Missing namespace '%s'", expected_ns->ns);
}
}
else { // and there is one, but is it the right one ?
if (strcmp(nsuri, expected_ns->ns)) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Bad XML namespace `%s' instead of `%s'", nsuri, expected_ns->ns);
}
}
}
}
} // if exer
return name;
}
void verify_end(XmlReaderWrap& reader, const XERdescriptor_t& p_td, const int depth, boolean exer)
{
TTCN_EncDec_ErrorContext endcontext("While checking end tag: ");
verify_name(reader, p_td, exer);
const int currdepth = reader.Depth();
if (currdepth!=depth) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_TAG,
"Bad depth in XML, %d instead of %d", currdepth, depth);
}
}
// This should be called for EXER only
boolean check_namespace(const char *ns_uri, const XERdescriptor_t& p_td)
{
if (p_td.my_module==0 || p_td.ns_index==-1) {// no namespace in XER descriptor
return ns_uri==0 || *ns_uri=='\0'; // there should be no ns
}
else {
const namespace_t *expected_ns = p_td.my_module->get_ns((size_t)p_td.ns_index);
if (ns_uri!=0) return strcmp(ns_uri, expected_ns->ns)==0;
else return TRUE; // if no namespace we presume it's the expected one
}
}
void write_ns_prefix(const XERdescriptor_t& p_td, TTCN_Buffer& p_buf)
{
if (p_td.my_module != 0 && p_td.ns_index != -1
&& !(p_td.xer_bits & FORM_UNQUALIFIED)) {
const namespace_t *my_ns = p_td.my_module->get_ns((size_t)p_td.ns_index);
if (my_ns->px[0] != 0) { // not an empty prefix
p_buf.put_s(strlen(my_ns->px), (cbyte*)my_ns->px);
p_buf.put_c(':');
}
}
}
const char* get_ns_uri_from_prefix(const char *prefix, const XERdescriptor_t& p_td)
{
if (p_td.my_module != 0 && prefix != NULL && prefix[0] != 0) {
for (size_t i = 0; i < p_td.my_module->get_num_ns(); ++i) {
const namespace_t *ns = p_td.my_module->get_ns(i);
if (ns->px != NULL && strcmp(ns->px, prefix) == 0) {
return ns->ns;
}
}
}
return NULL;
}
void check_namespace_restrictions(const XERdescriptor_t& p_td, const char* p_xmlns)
{
// In case of "anyElement from ..." matching namespaces is good
// in case of "anyElement except ..." matching namespaces is bad
boolean ns_match_allowed = (p_td.xer_bits & ANY_FROM) ? TRUE : FALSE;
boolean ns_error = ns_match_allowed;
for (unsigned short idx = 0; idx < p_td.nof_ns_uris; ++idx) {
if ((p_xmlns == 0 && strlen(p_td.ns_uris[idx]) == 0) ||
(p_xmlns != 0 && strcmp(p_td.ns_uris[idx], p_xmlns) == 0))
{
ns_error = !ns_match_allowed;
break;
}
}
if (ns_error) {
if (p_xmlns) {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_INVAL_MSG,
"XML namespace \"%s\" is %s namespace list.", p_xmlns, ns_match_allowed ? "not in the allowed" : "in the excluded");
}
else {
TTCN_EncDec_ErrorContext::error(TTCN_EncDec::ET_INVAL_MSG,
"The unqualified XML namespace is %s namespace list.", ns_match_allowed ? "not in the allowed" : "in the excluded");
}
}
}
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