--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/libxml2libs/src/libxml2/libxml2_valid.c Thu Dec 17 09:29:21 2009 +0200
@@ -0,0 +1,6946 @@
+/*
+ * libxml2_valid.c : part of the code use to do the DTD handling and the validity
+ * checking
+ *
+ * See Copyright for the status of this software.
+ *
+ * daniel@veillard.com
+ * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
+ */
+
+#define IN_LIBXML
+
+#include "xmlenglibxml.h"
+
+#include <string.h>
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include <stdapis/libxml2/libxml2_globals.h>
+#include <stdapis/libxml2/libxml2_parserinternals.h>
+#include "libxml2_xmlerror2.h"
+
+static xmlElementPtr xmlGetDtdElementDesc2(xmlDtdPtr dtd, const xmlChar *name,
+ int create);
+/* #define DEBUG_VALID_ALGO */
+/* #define DEBUG_REGEXP_ALGO */
+
+
+
+
+
+
+/************************************************************************
+ * *
+ * Error handling routines *
+ * *
+ ************************************************************************/
+
+/**
+ * xmlVErrMemory:
+ * @param ctxt an XML validation parser context
+ * @param extra extra informations
+ *
+ * Handle an out of memory error
+ */
+static void
+xmlVErrMemory(xmlValidCtxtPtr ctxt, const char *extra)
+{
+ xmlGenericErrorFunc channel;
+ xmlParserCtxtPtr pctxt;
+ void* data;
+
+ if (ctxt) {
+ channel = ctxt->error;
+ data = ctxt->userData;
+ pctxt = (xmlParserCtxtPtr)ctxt->userData;
+ } else {
+ channel = NULL;
+ pctxt = NULL;
+ data = NULL;
+ }
+ if (extra)
+ __xmlRaiseError(NULL, channel, data,
+ pctxt, NULL, XML_FROM_VALID, XML_ERR_NO_MEMORY,
+ XML_ERR_FATAL, NULL, 0, extra, NULL, NULL, 0, 0,
+ EMBED_ERRTXT("Memory allocation failed : %s\n"), extra);
+ else
+ __xmlRaiseError(NULL, channel, data,
+ pctxt, NULL, XML_FROM_VALID, XML_ERR_NO_MEMORY,
+ XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0,
+ EMBED_ERRTXT("Memory allocation failed\n"));
+}
+
+/**
+ * xmlErrValid:
+ * @param ctxt an XML validation parser context
+ * @param error the error number
+ * @param extra extra informations
+ *
+ * Handle a validation error
+ */
+static void
+xmlErrValid(xmlValidCtxtPtr ctxt, xmlParserErrors error,
+ const char *msg, const char *extra)
+{
+ xmlGenericErrorFunc channel = NULL;
+ xmlParserCtxtPtr pctxt = NULL;
+ void *data = NULL;
+
+ if (ctxt != NULL) {
+ channel = ctxt->error;
+ data = ctxt->userData;
+ pctxt = (xmlParserCtxtPtr)ctxt->userData;
+ }
+ if (extra)
+ __xmlRaiseError(NULL, channel, data,
+ pctxt, NULL, XML_FROM_VALID, error,
+ XML_ERR_ERROR, NULL, 0, extra, NULL, NULL, 0, 0,
+ msg, extra);
+ else
+ __xmlRaiseError(NULL, channel, data,
+ pctxt, NULL, XML_FROM_VALID, error,
+ XML_ERR_ERROR, NULL, 0, NULL, NULL, NULL, 0, 0,
+ msg);
+}
+
+#if defined(LIBXML_VALID_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED) || defined(XMLENGINE_XMLSCHEMA_DATATYPES)
+/**
+ * xmlErrValidNode:
+ * @param ctxt an XML validation parser context
+ * @param node the node raising the error
+ * @param error the error number
+ * @param str1 extra informations
+ * @param str2 extra informations
+ * @param str3 extra informations
+ *
+ * Handle a validation error, provide contextual informations
+ */
+static void
+xmlErrValidNode(xmlValidCtxtPtr ctxt,
+ xmlNodePtr node, xmlParserErrors error,
+ const char *msg, const xmlChar * str1,
+ const xmlChar * str2, const xmlChar * str3)
+{
+ xmlStructuredErrorFunc schannel = NULL;
+ xmlGenericErrorFunc channel = NULL;
+ xmlParserCtxtPtr pctxt = NULL;
+ void *data = NULL;
+
+ if (ctxt != NULL) {
+ channel = ctxt->error;
+ data = ctxt->userData;
+ pctxt = (xmlParserCtxtPtr)ctxt->userData;
+ }
+ __xmlRaiseError(schannel, channel, data, pctxt, node, XML_FROM_VALID, error,
+ XML_ERR_ERROR, NULL, 0,
+ (const char *) str1,
+ (const char *) str1,
+ (const char *) str3, 0, 0, msg, str1, str2, str3);
+}
+#endif /* LIBXML_VALID_ENABLED or LIBXML_SCHEMAS_ENABLED */
+
+#ifdef LIBXML_VALID_ENABLED
+/**
+ * xmlErrValidNodeNr:
+ * @param ctxt an XML validation parser context
+ * @param node the node raising the error
+ * @param error the error number
+ * @param str1 extra informations
+ * @param int2 extra informations
+ * @param str3 extra informations
+ *
+ * Handle a validation error, provide contextual informations
+ */
+static void
+xmlErrValidNodeNr(xmlValidCtxtPtr ctxt,
+ xmlNodePtr node, xmlParserErrors error,
+ const char *msg, const xmlChar * str1,
+ int int2, const xmlChar * str3)
+{
+ xmlStructuredErrorFunc schannel = NULL;
+ xmlGenericErrorFunc channel = NULL;
+ xmlParserCtxtPtr pctxt = NULL;
+ void *data = NULL;
+
+ if (ctxt != NULL) {
+ channel = ctxt->error;
+ data = ctxt->userData;
+ pctxt = ctxt->userData;
+ }
+ __xmlRaiseError(schannel, channel, data, pctxt, node, XML_FROM_VALID, error,
+ XML_ERR_ERROR, NULL, 0,
+ (const char *) str1,
+ (const char *) str3,
+ NULL, int2, 0, msg, str1, int2, str3);
+}
+
+/**
+ * xmlErrValidWarning:
+ * @param ctxt an XML validation parser context
+ * @param node the node raising the error
+ * @param error the error number
+ * @param str1 extra information
+ * @param str2 extra information
+ * @param str3 extra information
+ *
+ * Handle a validation error, provide contextual information
+ */
+static void
+xmlErrValidWarning(xmlValidCtxtPtr ctxt,
+ xmlNodePtr node, xmlParserErrors error,
+ const char *msg, const xmlChar * str1,
+ const xmlChar * str2, const xmlChar * str3)
+{
+ xmlStructuredErrorFunc schannel = NULL;
+ xmlGenericErrorFunc channel = NULL;
+ xmlParserCtxtPtr pctxt = NULL;
+ void *data = NULL;
+
+ if (ctxt != NULL) {
+ channel = ctxt->error;
+ data = ctxt->userData;
+ pctxt = ctxt->userData;
+ }
+ __xmlRaiseError(schannel, channel, data, pctxt, node, XML_FROM_VALID, error,
+ XML_ERR_WARNING, NULL, 0,
+ (const char *) str1,
+ (const char *) str1,
+ (const char *) str3, 0, 0, msg, str1, str2, str3);
+}
+
+
+
+#ifdef LIBXML_REGEXP_ENABLED
+/*
+ * If regexp are enabled we can do continuous validation without the
+ * need of a tree to validate the content model. this is done in each
+ * callbacks.
+ * Each xmlValidState represent the validation state associated to the
+ * set of nodes currently open from the document root to the current element.
+ */
+
+
+typedef struct _xmlValidState {
+ xmlElementPtr elemDecl; /* pointer to the content model */
+ xmlNodePtr node; /* pointer to the current node */
+ xmlRegExecCtxtPtr exec; /* regexp runtime */
+} _xmlValidState;
+
+
+static int
+vstateVPush(xmlValidCtxtPtr ctxt, xmlElementPtr elemDecl, xmlNodePtr node) {
+ if ((ctxt->vstateMax == 0) || (ctxt->vstateTab == NULL)) {
+ ctxt->vstateMax = 10;
+ ctxt->vstateTab = (xmlValidState *) xmlMalloc(ctxt->vstateMax *
+ sizeof(ctxt->vstateTab[0]));
+ if (ctxt->vstateTab == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(-1);
+ }
+ }
+
+ if (ctxt->vstateNr >= ctxt->vstateMax) {
+ xmlValidState *tmp;
+
+ tmp = (xmlValidState *) xmlRealloc(ctxt->vstateTab,
+ 2 * ctxt->vstateMax * sizeof(ctxt->vstateTab[0]));
+ if (tmp == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("realloc failed"));
+ return(-1);
+ }
+ ctxt->vstateMax *= 2;
+ ctxt->vstateTab = tmp;
+ }
+ ctxt->vstate = &ctxt->vstateTab[ctxt->vstateNr];
+ ctxt->vstateTab[ctxt->vstateNr].elemDecl = elemDecl;
+ ctxt->vstateTab[ctxt->vstateNr].node = node;
+ if ((elemDecl != NULL) && (elemDecl->etype == XML_ELEMENT_TYPE_ELEMENT)) {
+ if (elemDecl->contModel == NULL)
+ xmlValidBuildContentModel(ctxt, elemDecl);
+ if (elemDecl->contModel != NULL) {
+ ctxt->vstateTab[ctxt->vstateNr].exec =
+ xmlRegNewExecCtxt(elemDecl->contModel, NULL, NULL);
+ } else {
+ ctxt->vstateTab[ctxt->vstateNr].exec = NULL;
+ xmlErrValidNode(ctxt, (xmlNodePtr) elemDecl,
+ XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Failed to build content model regexp for %s\n"),
+ node->name, NULL, NULL);
+ }
+ }
+ return(ctxt->vstateNr++);
+}
+
+static int
+vstateVPop(xmlValidCtxtPtr ctxt) {
+ xmlElementPtr elemDecl;
+
+ if (ctxt->vstateNr < 1) return(-1);
+ ctxt->vstateNr--;
+ elemDecl = ctxt->vstateTab[ctxt->vstateNr].elemDecl;
+ ctxt->vstateTab[ctxt->vstateNr].elemDecl = NULL;
+ ctxt->vstateTab[ctxt->vstateNr].node = NULL;
+ if ((elemDecl != NULL) && (elemDecl->etype == XML_ELEMENT_TYPE_ELEMENT)) {
+ xmlRegFreeExecCtxt(ctxt->vstateTab[ctxt->vstateNr].exec);
+ }
+ ctxt->vstateTab[ctxt->vstateNr].exec = NULL;
+ if (ctxt->vstateNr >= 1)
+ ctxt->vstate = &ctxt->vstateTab[ctxt->vstateNr - 1];
+ else
+ ctxt->vstate = NULL;
+ return(ctxt->vstateNr);
+}
+
+#else /* not LIBXML_REGEXP_ENABLED */
+/*
+ * If regexp are not enabled, it uses a home made algorithm less
+ * complex and easier to
+ * debug/maintain than a generic NFA -> DFA state based algo. The
+ * only restriction is on the deepness of the tree limited by the
+ * size of the occurs bitfield
+ *
+ * this is the content of a saved state for rollbacks
+ */
+
+#define ROLLBACK_OR 0
+#define ROLLBACK_PARENT 1
+
+typedef struct _xmlValidState {
+ xmlElementContentPtr cont; /* pointer to the content model subtree */
+ xmlNodePtr node; /* pointer to the current node in the list */
+ long occurs;/* bitfield for multiple occurrences */
+ unsigned char depth; /* current depth in the overall tree */
+ unsigned char state; /* ROLLBACK_XXX */
+} _xmlValidState;
+
+#define MAX_RECURSE 25000
+#define MAX_DEPTH ((sizeof(_xmlValidState.occurs)) * 8)
+#define CONT ctxt->vstate->cont
+#define NODE ctxt->vstate->node
+#define DEPTH ctxt->vstate->depth
+#define OCCURS ctxt->vstate->occurs
+#define STATE ctxt->vstate->state
+
+#define OCCURRENCE (ctxt->vstate->occurs & (1 << DEPTH))
+#define PARENT_OCCURRENCE (ctxt->vstate->occurs & ((1 << DEPTH) - 1))
+
+#define SET_OCCURRENCE ctxt->vstate->occurs |= (1 << DEPTH)
+#define RESET_OCCURRENCE ctxt->vstate->occurs &= ((1 << DEPTH) - 1)
+
+static int
+vstateVPush(xmlValidCtxtPtr ctxt, xmlElementContentPtr cont,
+ xmlNodePtr node, unsigned char depth, long occurs,
+ unsigned char state) {
+ int i = ctxt->vstateNr - 1;
+
+ if (ctxt->vstateNr > MAX_RECURSE) {
+ return(-1);
+ }
+ if (ctxt->vstateTab == NULL) {
+ ctxt->vstateMax = 8;
+ ctxt->vstateTab = (xmlValidState *) xmlMalloc(
+ ctxt->vstateMax * sizeof(ctxt->vstateTab[0]));
+ if (ctxt->vstateTab == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(-1);
+ }
+ }
+ if (ctxt->vstateNr >= ctxt->vstateMax) {
+ xmlValidState *tmp;
+
+ tmp = (xmlValidState *) xmlRealloc(ctxt->vstateTab,
+ 2 * ctxt->vstateMax * sizeof(ctxt->vstateTab[0]));
+ if (tmp == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(-1);
+ }
+ ctxt->vstateMax *= 2;
+ ctxt->vstateTab = tmp;
+ ctxt->vstate = &ctxt->vstateTab[0];
+ }
+ /*
+ * Don't push on the stack a state already here
+ */
+ if ((i >= 0) && (ctxt->vstateTab[i].cont == cont) &&
+ (ctxt->vstateTab[i].node == node) &&
+ (ctxt->vstateTab[i].depth == depth) &&
+ (ctxt->vstateTab[i].occurs == occurs) &&
+ (ctxt->vstateTab[i].state == state))
+ return(ctxt->vstateNr);
+ ctxt->vstateTab[ctxt->vstateNr].cont = cont;
+ ctxt->vstateTab[ctxt->vstateNr].node = node;
+ ctxt->vstateTab[ctxt->vstateNr].depth = depth;
+ ctxt->vstateTab[ctxt->vstateNr].occurs = occurs;
+ ctxt->vstateTab[ctxt->vstateNr].state = state;
+ return(ctxt->vstateNr++);
+}
+
+static int
+vstateVPop(xmlValidCtxtPtr ctxt) {
+ if (ctxt->vstateNr <= 1) return(-1);
+ ctxt->vstateNr--;
+ ctxt->vstate = &ctxt->vstateTab[0];
+ ctxt->vstate->cont = ctxt->vstateTab[ctxt->vstateNr].cont;
+ ctxt->vstate->node = ctxt->vstateTab[ctxt->vstateNr].node;
+ ctxt->vstate->depth = ctxt->vstateTab[ctxt->vstateNr].depth;
+ ctxt->vstate->occurs = ctxt->vstateTab[ctxt->vstateNr].occurs;
+ ctxt->vstate->state = ctxt->vstateTab[ctxt->vstateNr].state;
+ return(ctxt->vstateNr);
+}
+
+#endif /* ! LIBXML_REGEXP_ENABLED */
+
+static int
+nodeVPush(xmlValidCtxtPtr ctxt, xmlNodePtr value)
+{
+ if (ctxt->nodeMax <= 0) {
+ ctxt->nodeMax = 4;
+ ctxt->nodeTab =
+ (xmlNodePtr *) xmlMalloc(ctxt->nodeMax *
+ sizeof(ctxt->nodeTab[0]));
+ if (ctxt->nodeTab == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ ctxt->nodeMax = 0;
+ return (0);
+ }
+ }
+ if (ctxt->nodeNr >= ctxt->nodeMax) {
+ xmlNodePtr *tmp;
+ tmp = (xmlNodePtr *) xmlRealloc(ctxt->nodeTab,
+ ctxt->nodeMax * 2 * sizeof(ctxt->nodeTab[0]));
+ if (tmp == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("realloc failed"));
+ return (0);
+ }
+ ctxt->nodeMax *= 2;
+ ctxt->nodeTab = tmp;
+ }
+ ctxt->nodeTab[ctxt->nodeNr] = value;
+ ctxt->node = value;
+ return (ctxt->nodeNr++);
+}
+static xmlNodePtr
+nodeVPop(xmlValidCtxtPtr ctxt)
+{
+ xmlNodePtr ret;
+
+ if (ctxt->nodeNr <= 0)
+ return (0);
+ ctxt->nodeNr--;
+ if (ctxt->nodeNr > 0)
+ ctxt->node = ctxt->nodeTab[ctxt->nodeNr - 1];
+ else
+ ctxt->node = NULL;
+ ret = ctxt->nodeTab[ctxt->nodeNr];
+ ctxt->nodeTab[ctxt->nodeNr] = 0;
+ return (ret);
+}
+
+#ifdef DEBUG_VALID_ALGO
+static void
+xmlValidPrintNode(xmlNodePtr cur) {
+ if (cur == NULL) {
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("null"));
+ return;
+ }
+
+ switch (cur->type) {
+ case XML_ELEMENT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("%s "), cur->name);
+ break;
+ case XML_TEXT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("text "));
+ break;
+ case XML_CDATA_SECTION_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("cdata "));
+ break;
+ case XML_ENTITY_REF_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("&%s; "), cur->name);
+ break;
+ case XML_PI_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("pi(%s) "), cur->name);
+ break;
+ case XML_COMMENT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("comment "));
+ break;
+ case XML_ATTRIBUTE_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?attr? "));
+ break;
+ case XML_ENTITY_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?ent? "));
+ break;
+ case XML_DOCUMENT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?doc? "));
+ break;
+ case XML_DOCUMENT_TYPE_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?doctype? "));
+ break;
+ case XML_DOCUMENT_FRAG_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?frag? "));
+ break;
+ case XML_NOTATION_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?nota? "));
+ break;
+ case XML_HTML_DOCUMENT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?html? "));
+ break;
+#ifdef LIBXML_DOCB_ENABLED
+ case XML_DOCB_DOCUMENT_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?docb? "));
+ break;
+#endif
+ case XML_DTD_NODE:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?dtd? "));
+ break;
+ case XML_ELEMENT_DECL:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?edecl? "));
+ break;
+ case XML_ATTRIBUTE_DECL:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?adecl? "));
+ break;
+ case XML_ENTITY_DECL:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?entdecl? "));
+ break;
+ case XML_NAMESPACE_DECL:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("?nsdecl? "));
+ break;
+ case XML_XINCLUDE_START:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("incstart "));
+ break;
+ case XML_XINCLUDE_END:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("incend "));
+ break;
+ }
+}
+
+static void
+xmlValidPrintNodeList(xmlNodePtr cur) {
+ if (cur == NULL)
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("null "));
+ while (cur != NULL) {
+ xmlValidPrintNode(cur);
+ cur = cur->next;
+ }
+}
+
+static void
+xmlValidDebug(xmlNodePtr cur, xmlElementContentPtr cont) {
+ char expr[5000];
+
+ expr[0] = 0;
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("valid: "));
+ xmlValidPrintNodeList(cur);
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("against "));
+ xmlSnprintfElementContent(expr, 5000, cont, 1);
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("%s\n"), expr);
+}
+
+static void
+xmlValidDebugState(xmlValidStatePtr state) {
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("("));
+ if (state->cont == NULL)
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("null,"));
+ else
+ switch (state->cont->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("pcdata,"));
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("%s,"),
+ state->cont->name);
+ break;
+ case XML_ELEMENT_CONTENT_SEQ:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("seq,"));
+ break;
+ case XML_ELEMENT_CONTENT_OR:
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("or,"));
+ break;
+ }
+ xmlValidPrintNode(state->node);
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT(",%d,%X,%d)"),
+ state->depth, state->occurs, state->state);
+}
+
+static void
+xmlValidStateDebug(xmlValidCtxtPtr ctxt) {
+ int i, j;
+
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("state: "));
+ xmlValidDebugState(ctxt->vstate);
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT(" stack: %d "),
+ ctxt->vstateNr - 1);
+ for (i = 0, j = ctxt->vstateNr - 1;(i < 3) && (j > 0);i++,j--)
+ xmlValidDebugState(&ctxt->vstateTab[j]);
+ xmlGenericError(xmlGenericErrorContext, EMBED_ERRTXT("\n"));
+}
+
+/*****
+#define DEBUG_VALID_STATE(n,c) xmlValidDebug(n,c);
+ *****/
+
+#define DEBUG_VALID_STATE(n,c) xmlValidStateDebug(ctxt);
+#define DEBUG_VALID_MSG(m) \
+ xmlGenericError(xmlGenericErrorContext, "%s\n", m);
+
+#else
+#define DEBUG_VALID_STATE(n,c)
+#define DEBUG_VALID_MSG(m)
+#endif
+
+
+
+
+#define CHECK_DTD \
+ if (doc == NULL) return(0); \
+ else if ((doc->intSubset == NULL) && \
+ (doc->extSubset == NULL)) return(0)
+
+xmlAttributePtr xmlScanAttributeDecl(xmlDtdPtr dtd, const xmlChar *elem);
+
+#ifdef LIBXML_REGEXP_ENABLED
+
+/************************************************************************
+ * *
+ * Content model validation based on the regexps *
+ * *
+ ************************************************************************/
+
+/**
+ * xmlValidBuildAContentModel:
+ * @param content the content model
+ * @param ctxt the schema parser context
+ * @param name the element name whose content is being built
+ *
+ * Generate the automata sequence needed for that type
+ *
+ * Returns 1 if successful or 0 in case of error.
+ */
+static int
+xmlValidBuildAContentModel(xmlElementContentPtr content,
+ xmlValidCtxtPtr ctxt,
+ const xmlChar *name) {
+ if (content == NULL) {
+ xmlErrValidNode(ctxt, NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Found NULL content in content model of %s\n"),
+ name, NULL, NULL);
+ return(0);
+ }
+ switch (content->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ xmlErrValidNode(ctxt, NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Found PCDATA in content model of %s\n"),
+ name, NULL, NULL);
+ return(0);
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT: {
+ xmlAutomataStatePtr oldstate = ctxt->state;
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(content->name, content->prefix, fn, 50);
+ if (fullname == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("Building content model"));
+ return(0);
+ }
+
+ switch (content->ocur) {
+ case XML_ELEMENT_CONTENT_ONCE:
+ ctxt->state = xmlAutomataNewTransition(ctxt->am,
+ ctxt->state, NULL, fullname, NULL);
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ ctxt->state = xmlAutomataNewTransition(ctxt->am,
+ ctxt->state, NULL, fullname, NULL);
+ xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state);
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ ctxt->state = xmlAutomataNewTransition(ctxt->am,
+ ctxt->state, NULL, fullname, NULL);
+ xmlAutomataNewTransition(ctxt->am, ctxt->state,
+ ctxt->state, fullname, NULL);
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+ ctxt->state = xmlAutomataNewEpsilon(ctxt->am,
+ ctxt->state, NULL);
+ xmlAutomataNewTransition(ctxt->am,
+ ctxt->state, ctxt->state, fullname, NULL);
+ break;
+ }
+ if ((fullname != fn) && (fullname != content->name))
+ xmlFree(fullname);
+ break;
+ }
+ case XML_ELEMENT_CONTENT_SEQ: {
+ xmlAutomataStatePtr oldstate, oldend;
+ xmlElementContentOccur ocur;
+
+ /*
+ * Simply iterate over the content
+ */
+ oldstate = ctxt->state;
+ ocur = content->ocur;
+ if (ocur != XML_ELEMENT_CONTENT_ONCE) {
+ ctxt->state = xmlAutomataNewEpsilon(ctxt->am, oldstate, NULL);
+ oldstate = ctxt->state;
+ }
+ do {
+ xmlValidBuildAContentModel(content->c1, ctxt, name);
+ content = content->c2;
+ } while ((content->type == XML_ELEMENT_CONTENT_SEQ) &&
+ (content->ocur == XML_ELEMENT_CONTENT_ONCE));
+ xmlValidBuildAContentModel(content, ctxt, name);
+ oldend = ctxt->state;
+ ctxt->state = xmlAutomataNewEpsilon(ctxt->am, oldend, NULL);
+ switch (ocur) {
+ case XML_ELEMENT_CONTENT_ONCE:
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state);
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+ xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state);
+ xmlAutomataNewEpsilon(ctxt->am, oldend, oldstate);
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ xmlAutomataNewEpsilon(ctxt->am, oldend, oldstate);
+ break;
+ }
+ break;
+ }
+ case XML_ELEMENT_CONTENT_OR: {
+ xmlAutomataStatePtr oldstate, oldend;
+ xmlElementContentOccur ocur;
+
+ ocur = content->ocur;
+ if ((ocur == XML_ELEMENT_CONTENT_PLUS) ||
+ (ocur == XML_ELEMENT_CONTENT_MULT)) {
+ ctxt->state = xmlAutomataNewEpsilon(ctxt->am,
+ ctxt->state, NULL);
+ }
+ oldstate = ctxt->state;
+ oldend = xmlAutomataNewState(ctxt->am);
+
+ /*
+ * iterate over the subtypes and remerge the end with an
+ * epsilon transition
+ */
+ do {
+ ctxt->state = oldstate;
+ xmlValidBuildAContentModel(content->c1, ctxt, name);
+ xmlAutomataNewEpsilon(ctxt->am, ctxt->state, oldend);
+ content = content->c2;
+ } while ((content->type == XML_ELEMENT_CONTENT_OR) &&
+ (content->ocur == XML_ELEMENT_CONTENT_ONCE));
+ ctxt->state = oldstate;
+ xmlValidBuildAContentModel(content, ctxt, name);
+ xmlAutomataNewEpsilon(ctxt->am, ctxt->state, oldend);
+ ctxt->state = xmlAutomataNewEpsilon(ctxt->am, oldend, NULL);
+ switch (ocur) {
+ case XML_ELEMENT_CONTENT_ONCE:
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state);
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+ xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state);
+ xmlAutomataNewEpsilon(ctxt->am, oldend, oldstate);
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ xmlAutomataNewEpsilon(ctxt->am, oldend, oldstate);
+ break;
+ }
+ break;
+ }
+ default:
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("ContentModel broken for element %s\n"),
+ (const char *) name);
+ return(0);
+ }
+ return(1);
+}
+/**
+ * xmlValidBuildContentModel:
+ * @param ctxt a validation context
+ * @param elem an element declaration node
+ *
+ * (Re)Build the automata associated to the content model of this
+ * element
+ *
+ * Returns 1 in case of success, 0 in case of error
+ */
+int
+xmlValidBuildContentModel(xmlValidCtxtPtr ctxt, xmlElementPtr elem) {
+
+ if ((ctxt == NULL) || (elem == NULL))
+ return(0);
+ if (elem->type != XML_ELEMENT_DECL)
+ return(0);
+ if (elem->etype != XML_ELEMENT_TYPE_ELEMENT)
+ return(1);
+
+ if (elem->contModel != NULL) {
+ if (!xmlRegexpIsDeterminist(elem->contModel)) {
+ ctxt->valid = 0;
+ return(0);
+ }
+ return(1);
+ }
+
+ ctxt->am = xmlNewAutomata();
+ if (ctxt->am == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem,
+ XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Cannot create automata for element %s\n"),
+ elem->name, NULL, NULL);
+ return(0);
+ }
+ ctxt->state = xmlAutomataGetInitState(ctxt->am);
+ xmlValidBuildAContentModel(elem->content, ctxt, elem->name);
+ xmlAutomataSetFinalState(ctxt->am, ctxt->state);
+ elem->contModel = xmlAutomataCompile(ctxt->am);
+ if (xmlRegexpIsDeterminist(elem->contModel) != 1) {
+
+#if 0
+ char expr[5000];
+ expr[0] = 0;
+ xmlSnprintfElementContent(expr, 5000, elem->content, 1);
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem,
+ XML_DTD_CONTENT_NOT_DETERMINIST,
+ EMBED_ERRTXT("Content model of %s is not determinist: %s\n"),
+ elem->name, BAD_CAST expr, NULL);
+#endif
+ char *expr = (char *) malloc(5000);
+ expr[0] = 0;
+ xmlSnprintfElementContent(expr, 5000, elem->content, 1);
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem,
+ XML_DTD_CONTENT_NOT_DETERMINIST,
+ EMBED_ERRTXT("Content model of %s is not determinist: %s\n"),
+ elem->name, BAD_CAST expr, NULL);
+ free(expr);
+
+#ifdef DEBUG_REGEXP_ALGO
+ xmlRegexpPrint(stderr, elem->contModel);
+#endif
+ ctxt->valid = 0;
+ ctxt->state = NULL;
+ xmlFreeAutomata(ctxt->am);
+ ctxt->am = NULL;
+ return(0);
+ }
+ ctxt->state = NULL;
+ xmlFreeAutomata(ctxt->am);
+ ctxt->am = NULL;
+ return(1);
+}
+
+#endif /* LIBXML_REGEXP_ENABLED */
+
+/****************************************************************
+ * *
+ * Util functions for data allocation/deallocation *
+ * *
+ ****************************************************************/
+
+/**
+ * xmlNewValidCtxt:
+ *
+ * Allocate a validation context structure.
+ *
+ * Returns NULL if not, otherwise the new validation context structure
+ */
+xmlValidCtxtPtr xmlNewValidCtxt(void) {
+ xmlValidCtxtPtr ret;
+
+ if ((ret = xmlMalloc(sizeof (xmlValidCtxt))) == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return (NULL);
+ }
+
+ (void) memset(ret, 0, sizeof (xmlValidCtxt));
+
+ return (ret);
+}
+
+/**
+ * xmlFreeValidCtxt:
+ * @param cur the validation context to free
+ *
+ * Free a validation context structure.
+ */
+void
+xmlFreeValidCtxt(xmlValidCtxtPtr cur) {
+ xmlFree(cur);
+}
+
+#endif /* LIBXML_VALID_ENABLED */
+
+/**
+ * xmlNewElementContent:
+ * @param name the subelement name or NULL
+ * @param type the type of element content decl
+ *
+ * Allocate an element content structure.
+ *
+ * Returns NULL if not, otherwise the new element content structure
+ *
+ * OOM: possible --> returns NULL for valid arguments
+ */
+XMLPUBFUNEXPORT xmlElementContentPtr
+xmlNewElementContent(const xmlChar* name, xmlElementContentType type)
+{
+ LOAD_GS_DIRECT
+ xmlElementContentPtr ret;
+
+ switch(type)
+ {
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ if (!name) {
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlNewElementContent : name == NULL !\n"),
+ NULL);
+ }
+ break;
+
+ case XML_ELEMENT_CONTENT_PCDATA:
+ case XML_ELEMENT_CONTENT_SEQ:
+ case XML_ELEMENT_CONTENT_OR:
+ if (name) {
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlNewElementContent : name != NULL !\n"),
+ NULL);
+ }
+ break;
+
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ELEMENT content corrupted invalid type\n"),
+ NULL);
+ return(NULL);
+ }
+
+ ret = (xmlElementContentPtr) xmlMalloc(sizeof(xmlElementContent));
+ if (!ret) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlElementContent));
+ ret->type = type;
+ ret->ocur = XML_ELEMENT_CONTENT_ONCE;
+
+ if (name) {
+ xmlChar* prefix = NULL;
+ ret->name = xmlSplitQName2(name, &prefix);
+ if (!ret->name)
+ {
+ ret->name = xmlStrdup(name);
+ if(OOM_FLAG)
+ {
+ xmlFree(ret);
+ return(NULL);
+ }
+ }
+ ret->prefix = prefix;
+ }
+ /* Unneded code: these fields are NULL after memset()
+ else {
+ ret->name = NULL;
+ ret->prefix = NULL;
+ }
+
+ ret->c1 = ret->c2 = ret->parent = NULL;
+ */
+ return(ret);
+}
+
+/**
+ * xmlCopyElementContent:
+ * @param cur An element content pointer.
+ *
+ * Build a copy of an element content description.
+ *
+ * Returns the new xmlElementContentPtr or NULL in case of error.
+ */
+XMLPUBFUNEXPORT xmlElementContentPtr
+xmlCopyElementContent(xmlElementContentPtr cur) {
+ xmlElementContentPtr ret;
+
+ if (cur == NULL) return(NULL);
+ ret = xmlNewElementContent((xmlChar *) cur->name, cur->type);
+ if (ret == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ if (cur->prefix != NULL)
+ ret->prefix = xmlStrdup(cur->prefix);
+ ret->ocur = cur->ocur;
+ if (cur->c1 != NULL) ret->c1 = xmlCopyElementContent(cur->c1);
+ if (ret->c1 != NULL)
+ ret->c1->parent = ret;
+ if (cur->c2 != NULL) ret->c2 = xmlCopyElementContent(cur->c2);
+ if (ret->c2 != NULL)
+ ret->c2->parent = ret;
+ return(ret);
+}
+
+/**
+ * xmlFreeElementContent:
+ * @param cur the element content tree to free
+ *
+ * Free an element content structure. This is a recursive call !
+ */
+XMLPUBFUNEXPORT void
+xmlFreeElementContent(xmlElementContentPtr cur) {
+ if (cur == NULL) return;
+ switch (cur->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ case XML_ELEMENT_CONTENT_SEQ:
+ case XML_ELEMENT_CONTENT_OR:
+ break;
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ELEMENT content corrupted invalid type\n"),
+ NULL);
+ return;
+ }
+ if (cur->c1 != NULL) xmlFreeElementContent(cur->c1);
+ if (cur->c2 != NULL) xmlFreeElementContent(cur->c2);
+ if (cur->name != NULL) xmlFree((xmlChar *) cur->name);
+ if (cur->prefix != NULL) xmlFree((xmlChar *) cur->prefix);
+ xmlFree(cur);
+}
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/**
+ * xmlDumpElementContent:
+ * @param buf An XML buffer
+ * @param content An element table
+ * @param glob 1 if one must print the englobing parenthesis, 0 otherwise
+ *
+ * This will dump the content of the element table as an XML DTD definition
+ */
+static void
+xmlDumpElementContent(xmlBufferPtr buf, xmlElementContentPtr content, int glob) {
+ if (content == NULL) return;
+
+ if (glob) xmlBufferWriteChar(buf, "(");
+ switch (content->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ xmlBufferWriteChar(buf, "#PCDATA");
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ if (content->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, content->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, content->name);
+ break;
+ case XML_ELEMENT_CONTENT_SEQ:
+ if ((content->c1->type == XML_ELEMENT_CONTENT_OR) ||
+ (content->c1->type == XML_ELEMENT_CONTENT_SEQ))
+ xmlDumpElementContent(buf, content->c1, 1);
+ else
+ xmlDumpElementContent(buf, content->c1, 0);
+ xmlBufferWriteChar(buf, " , ");
+ if (content->c2->type == XML_ELEMENT_CONTENT_OR)
+ xmlDumpElementContent(buf, content->c2, 1);
+ else
+ xmlDumpElementContent(buf, content->c2, 0);
+ break;
+ case XML_ELEMENT_CONTENT_OR:
+ if ((content->c1->type == XML_ELEMENT_CONTENT_OR) ||
+ (content->c1->type == XML_ELEMENT_CONTENT_SEQ))
+ xmlDumpElementContent(buf, content->c1, 1);
+ else
+ xmlDumpElementContent(buf, content->c1, 0);
+ xmlBufferWriteChar(buf, " | ");
+ if (content->c2->type == XML_ELEMENT_CONTENT_SEQ)
+ xmlDumpElementContent(buf, content->c2, 1);
+ else
+ xmlDumpElementContent(buf, content->c2, 0);
+ break;
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ELEMENT content corrupted invalid type\n"),
+ NULL);
+ }
+ if (glob)
+ xmlBufferWriteChar(buf, ")");
+ switch (content->ocur) {
+ case XML_ELEMENT_CONTENT_ONCE:
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ xmlBufferWriteChar(buf, "?");
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+ xmlBufferWriteChar(buf, "*");
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ xmlBufferWriteChar(buf, "+");
+ break;
+ }
+}
+
+
+/**
+ * xmlSprintfElementContent:
+ * @param buf an output buffer
+ * @param content An element table
+ * @param glob 1 if one must print the enclosing parenthesis, 0 otherwise
+ *
+ * Deprecated, unsafe, use xmlSnprintfElementContent
+ */
+XMLPUBFUNEXPORT void
+xmlSprintfElementContent(char *buf ATTRIBUTE_UNUSED,
+ xmlElementContentPtr content ATTRIBUTE_UNUSED,
+ int glob ATTRIBUTE_UNUSED) {
+}
+
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/**
+ * xmlSnprintfElementContent:
+ * @param buf an output buffer
+ * @param size the buffer size
+ * @param content An element table
+ * @param glob 1 if one must print the enclobing parenthesis, 0 otherwise
+ *
+ * This will dump the content of the element content definition
+ * Intended just for the debug routine
+ */
+XMLPUBFUNEXPORT void
+xmlSnprintfElementContent(char *buf, int size, xmlElementContentPtr content, int glob) {
+ int len;
+
+ if (content == NULL) return;
+ len = strlen(buf);
+ if (size - len < 50) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ if (glob) strcat(buf, "(");
+ switch (content->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ strcat(buf, "#PCDATA");
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ if (content->prefix != NULL) {
+ if (size - len < xmlStrlen(content->prefix) + 10) {
+ strcat(buf, " ...");
+ return;
+ }
+ strcat(buf, (char *) content->prefix);
+ strcat(buf, ":");
+ }
+ if (size - len < xmlStrlen(content->name) + 10) {
+ strcat(buf, " ...");
+ return;
+ }
+ if (content->name != NULL)
+ strcat(buf, (char *) content->name);
+ break;
+ case XML_ELEMENT_CONTENT_SEQ:
+ if ((content->c1->type == XML_ELEMENT_CONTENT_OR) ||
+ (content->c1->type == XML_ELEMENT_CONTENT_SEQ))
+ xmlSnprintfElementContent(buf, size, content->c1, 1);
+ else
+ xmlSnprintfElementContent(buf, size, content->c1, 0);
+ len = strlen(buf);
+ if (size - len < 50) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ strcat(buf, " , ");
+ if (((content->c2->type == XML_ELEMENT_CONTENT_OR) ||
+ (content->c2->ocur != XML_ELEMENT_CONTENT_ONCE)) &&
+ (content->c2->type != XML_ELEMENT_CONTENT_ELEMENT))
+ xmlSnprintfElementContent(buf, size, content->c2, 1);
+ else
+ xmlSnprintfElementContent(buf, size, content->c2, 0);
+ break;
+ case XML_ELEMENT_CONTENT_OR:
+ if ((content->c1->type == XML_ELEMENT_CONTENT_OR) ||
+ (content->c1->type == XML_ELEMENT_CONTENT_SEQ))
+ xmlSnprintfElementContent(buf, size, content->c1, 1);
+ else
+ xmlSnprintfElementContent(buf, size, content->c1, 0);
+ len = strlen(buf);
+ if (size - len < 50) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ strcat(buf, " | ");
+ if (((content->c2->type == XML_ELEMENT_CONTENT_SEQ) ||
+ (content->c2->ocur != XML_ELEMENT_CONTENT_ONCE)) &&
+ (content->c2->type != XML_ELEMENT_CONTENT_ELEMENT))
+ xmlSnprintfElementContent(buf, size, content->c2, 1);
+ else
+ xmlSnprintfElementContent(buf, size, content->c2, 0);
+ break;
+ }
+ if (glob)
+ strcat(buf, ")");
+ switch (content->ocur) {
+ case XML_ELEMENT_CONTENT_ONCE:
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ strcat(buf, "?");
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+ strcat(buf, "*");
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ strcat(buf, "+");
+ break;
+ }
+}
+
+/****************************************************************
+ * *
+ * Registration of DTD declarations *
+ * *
+ ****************************************************************/
+
+/**
+ * xmlCreateElementTable:
+ *
+ * create and initialize an empty element hash table.
+ *
+ * Returns the xmlElementTablePtr just created or NULL in case of error.
+ */
+static xmlElementTablePtr
+xmlCreateElementTable(void) {
+ return(xmlHashCreate(0));
+}
+
+/**
+ * xmlFreeElement:
+ * @param elem An element
+ *
+ * Deallocate the memory used by an element definition
+ */
+static void
+xmlFreeElement(xmlElementPtr elem) {
+ if (elem == NULL) return;
+ xmlUnlinkNode((xmlNodePtr) elem);
+ xmlFreeElementContent(elem->content);
+ if (elem->name != NULL)
+ xmlFree((xmlChar *) elem->name);
+ if (elem->prefix != NULL)
+ xmlFree((xmlChar *) elem->prefix);
+#ifdef LIBXML_REGEXP_ENABLED
+ if (elem->contModel != NULL)
+ xmlRegFreeRegexp(elem->contModel);
+#endif
+ xmlFree(elem);
+}
+
+
+/**
+ * xmlAddElementDecl:
+ * @param ctxt the validation context
+ * @param dtd pointer to the DTD
+ * @param name the entity name
+ * @param type the element type
+ * @param content the element content tree or NULL
+ *
+ * Register a new element declaration
+ *
+ * Returns NULL if not, otherwise the entity
+ */
+XMLPUBFUNEXPORT xmlElementPtr
+xmlAddElementDecl(xmlValidCtxtPtr ctxt,
+ xmlDtdPtr dtd, const xmlChar *name,
+ xmlElementTypeVal type,
+ xmlElementContentPtr content) {
+ xmlElementPtr ret;
+ xmlElementTablePtr table;
+ xmlAttributePtr oldAttributes = NULL;
+ xmlChar *ns, *uqname;
+
+ if (dtd == NULL) {
+ return(NULL);
+ }
+ if (name == NULL) {
+ return(NULL);
+ }
+ switch (type) {
+ case XML_ELEMENT_TYPE_EMPTY:
+ if (content != NULL) {
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddElementDecl: content != NULL for EMPTY\n"),
+ NULL);
+ return(NULL);
+ }
+ break;
+ case XML_ELEMENT_TYPE_ANY:
+ if (content != NULL) {
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddElementDecl: content != NULL for ANY\n"),
+ NULL);
+ return(NULL);
+ }
+ break;
+ case XML_ELEMENT_TYPE_MIXED:
+ if (content == NULL) {
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddElementDecl: content == NULL for MIXED\n"),
+ NULL);
+ return(NULL);
+ }
+ break;
+ case XML_ELEMENT_TYPE_ELEMENT:
+ if (content == NULL) {
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddElementDecl: content == NULL for ELEMENT\n"),
+ NULL);
+ return(NULL);
+ }
+ break;
+ default:
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ELEMENT decl corrupted invalid type\n"),
+ NULL);
+ return(NULL);
+ }
+
+ /*
+ * check if name is a QName
+ */
+ uqname = xmlSplitQName2(name, &ns);
+ if (uqname != NULL)
+ name = uqname;
+
+ /*
+ * Create the Element table if needed.
+ */
+ table = (xmlElementTablePtr) dtd->elements;
+ if (table == NULL) {
+ table = xmlCreateElementTable();
+ dtd->elements = (void *) table;
+ }
+ if (table == NULL) {
+ xmlVErrMemory(ctxt,
+ EMBED_ERRTXT("xmlAddElementDecl: Table creation failed!\n"));
+ if (uqname != NULL)
+ xmlFree(uqname);
+ if (ns != NULL)
+ xmlFree(ns);
+ return(NULL);
+ }
+
+ /*
+ * lookup old attributes inserted on an undefined element in the
+ * internal subset.
+ */
+ if ((dtd->doc != NULL) && (dtd->doc->intSubset != NULL)) {
+ ret = (xmlElementPtr)xmlHashLookup2((xmlHashTablePtr)dtd->doc->intSubset->elements, name, ns);
+ if ((ret != NULL) && (ret->etype == XML_ELEMENT_TYPE_UNDEFINED)) {
+ oldAttributes = ret->attributes;
+ ret->attributes = NULL;
+ xmlHashRemoveEntry2((xmlHashTablePtr)dtd->doc->intSubset->elements, name, ns, NULL);
+ xmlFreeElement(ret);
+ }
+ }
+
+ /*
+ * The element may already be present if one of its attribute
+ * was registered first
+ */
+ ret = (xmlElementPtr)xmlHashLookup2(table, name, ns);
+ if (ret != NULL) {
+ if (ret->etype != XML_ELEMENT_TYPE_UNDEFINED) {
+#ifdef LIBXML_VALID_ENABLED
+ /*
+ * The element is already defined in this DTD.
+ */
+ xmlErrValidNode(ctxt, (xmlNodePtr) dtd, XML_DTD_ELEM_REDEFINED,
+ EMBED_ERRTXT("Redefinition of element %s\n"),
+ name, NULL, NULL);
+#endif /* LIBXML_VALID_ENABLED */
+ if (uqname != NULL)
+ xmlFree(uqname);
+ if (ns != NULL)
+ xmlFree(ns);
+ return(NULL);
+ }
+ } else {
+ ret = (xmlElementPtr) xmlMalloc(sizeof(xmlElement));
+ if (ret == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ if (uqname != NULL)
+ xmlFree(uqname);
+ if (ns != NULL)
+ xmlFree(ns);
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlElement));
+ ret->type = XML_ELEMENT_DECL;
+
+ /*
+ * fill the structure.
+ */
+ ret->name = xmlStrdup(name);
+ if (ret->name == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ if (uqname != NULL)
+ xmlFree(uqname);
+ if (ns != NULL)
+ xmlFree(ns);
+ xmlFree(ret);
+ return(NULL);
+ }
+ ret->prefix = ns;
+
+ /*
+ * Validity Check:
+ * Insertion must not fail
+ */
+ if (xmlHashAddEntry2(table, name, ns, ret)) {
+#ifdef LIBXML_VALID_ENABLED
+ /*
+ * The element is already defined in this DTD.
+ */
+ xmlErrValidNode(ctxt, (xmlNodePtr) dtd, XML_DTD_ELEM_REDEFINED,
+ EMBED_ERRTXT("Redefinition of element %s\n"),
+ name, NULL, NULL);
+#endif /* LIBXML_VALID_ENABLED */
+ xmlFreeElement(ret);
+ if (uqname != NULL)
+ xmlFree(uqname);
+ return(NULL);
+ }
+ /*
+ * For new element, may have attributes from earlier
+ * definition in internal subset
+ */
+ ret->attributes = oldAttributes;
+ }
+
+ /*
+ * Finish to fill the structure.
+ */
+ ret->etype = type;
+ ret->content = xmlCopyElementContent(content);
+
+ /*
+ * Link it to the DTD
+ */
+ ret->parent = dtd;
+ ret->doc = dtd->doc;
+ if (dtd->last == NULL) {
+ dtd->children = dtd->last = (xmlNodePtr) ret;
+ } else {
+ dtd->last->next = (xmlNodePtr) ret;
+ ret->prev = dtd->last;
+ dtd->last = (xmlNodePtr) ret;
+ }
+ if (uqname != NULL)
+ xmlFree(uqname);
+ return(ret);
+}
+
+/**
+ * xmlFreeElementTable:
+ * @param table An element table
+ *
+ * Deallocate the memory used by an element hash table.
+ */
+XMLPUBFUNEXPORT void
+xmlFreeElementTable(xmlElementTablePtr table) {
+ xmlHashFree(table, (xmlHashDeallocator) xmlFreeElement);
+}
+
+#ifdef LIBXML_TREE_ENABLED
+/**
+ * xmlCopyElement:
+ * @param elem An element
+ *
+ * Build a copy of an element.
+ *
+ * Returns the new xmlElementPtr or NULL in case of error.
+ */
+static xmlElementPtr
+xmlCopyElement(xmlElementPtr elem) {
+ xmlElementPtr cur;
+
+ cur = (xmlElementPtr) xmlMalloc(sizeof(xmlElement));
+ if (cur == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(cur, 0, sizeof(xmlElement));
+ cur->type = XML_ELEMENT_DECL;
+ cur->etype = elem->etype;
+ if (elem->name != NULL)
+ cur->name = xmlStrdup(elem->name);
+ else
+ cur->name = NULL;
+ if (elem->prefix != NULL)
+ cur->prefix = xmlStrdup(elem->prefix);
+ else
+ cur->prefix = NULL;
+ cur->content = xmlCopyElementContent(elem->content);
+
+ cur->attributes = NULL;
+ return(cur);
+}
+
+/**
+ * xmlCopyElementTable:
+ * @param table An element table
+ *
+ * Build a copy of an element table.
+ *
+ * Returns the new xmlElementTablePtr or NULL in case of error.
+ *
+ * OOM: possible --> OOM flag is set when returns NULL
+ */
+XMLPUBFUNEXPORT xmlElementTablePtr
+xmlCopyElementTable(xmlElementTablePtr table) {
+
+ return((xmlElementTablePtr) xmlHashCopy(table,
+ (xmlHashCopier) xmlCopyElement));
+}
+#endif /* LIBXML_TREE_ENABLED */
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/**
+ * xmlDumpElementDecl:
+ * @param buf the XML buffer output
+ * @param elem An element table
+ *
+ * This will dump the content of the element declaration as an XML
+ * DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpElementDecl(xmlBufferPtr buf, xmlElementPtr elem) {
+ switch (elem->etype) {
+ case XML_ELEMENT_TYPE_EMPTY:
+ xmlBufferWriteChar(buf, "<!ELEMENT ");
+ if (elem->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, elem->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, elem->name);
+ xmlBufferWriteChar(buf, " EMPTY>\n");
+ break;
+ case XML_ELEMENT_TYPE_ANY:
+ xmlBufferWriteChar(buf, "<!ELEMENT ");
+ if (elem->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, elem->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, elem->name);
+ xmlBufferWriteChar(buf, " ANY>\n");
+ break;
+ case XML_ELEMENT_TYPE_MIXED:
+ xmlBufferWriteChar(buf, "<!ELEMENT ");
+ if (elem->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, elem->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, elem->name);
+ xmlBufferWriteChar(buf, " ");
+ xmlDumpElementContent(buf, elem->content, 1);
+ xmlBufferWriteChar(buf, ">\n");
+ break;
+ case XML_ELEMENT_TYPE_ELEMENT:
+ xmlBufferWriteChar(buf, "<!ELEMENT ");
+ if (elem->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, elem->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, elem->name);
+ xmlBufferWriteChar(buf, " ");
+ xmlDumpElementContent(buf, elem->content, 1);
+ xmlBufferWriteChar(buf, ">\n");
+ break;
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ELEMENT struct corrupted invalid type\n"),
+ NULL);
+ }
+}
+
+/**
+ * xmlDumpElementDeclScan:
+ * @param elem An element table
+ * @param buf the XML buffer output
+ *
+ * This routine is used by the hash scan function. It just reverses
+ * the arguments.
+ */
+static void
+xmlDumpElementDeclScan(xmlElementPtr elem, xmlBufferPtr buf) {
+ xmlDumpElementDecl(buf, elem);
+}
+
+/**
+ * xmlDumpElementTable:
+ * @param buf the XML buffer output
+ * @param table An element table
+ *
+ * This will dump the content of the element table as an XML DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpElementTable(xmlBufferPtr buf, xmlElementTablePtr table) {
+ xmlHashScan(table, (xmlHashScanner) xmlDumpElementDeclScan, buf);
+}
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/**
+ * xmlCreateEnumeration:
+ * @param name the enumeration name or NULL
+ *
+ * create and initialize an enumeration attribute node.
+ *
+ * Returns the xmlEnumerationPtr just created or NULL in case
+ * of error.
+ */
+XMLPUBFUNEXPORT xmlEnumerationPtr
+xmlCreateEnumeration(const xmlChar *name) {
+ xmlEnumerationPtr ret;
+
+ ret = (xmlEnumerationPtr) xmlMalloc(sizeof(xmlEnumeration));
+ if (ret == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlEnumeration));
+
+ if (name != NULL)
+ ret->name = xmlStrdup(name);
+ return(ret);
+}
+
+/**
+ * xmlFreeEnumeration:
+ * @param cur the tree to free.
+ *
+ * free an enumeration attribute node (recursive).
+ */
+XMLPUBFUNEXPORT void
+xmlFreeEnumeration(xmlEnumerationPtr cur) {
+ if (cur == NULL) return;
+
+ if (cur->next != NULL) xmlFreeEnumeration(cur->next);
+
+ if (cur->name != NULL) xmlFree((xmlChar *) cur->name);
+ xmlFree(cur);
+}
+
+#ifdef LIBXML_TREE_ENABLED
+/**
+ * xmlCopyEnumeration:
+ * @param cur the tree to copy.
+ *
+ * Copy an enumeration attribute node (recursive).
+ *
+ * Returns the xmlEnumerationPtr just created or NULL in case
+ * of error.
+ */
+XMLPUBFUNEXPORT xmlEnumerationPtr
+xmlCopyEnumeration(xmlEnumerationPtr cur) {
+ xmlEnumerationPtr ret;
+
+ if (cur == NULL) return(NULL);
+ ret = xmlCreateEnumeration((xmlChar *) cur->name);
+
+ if (cur->next != NULL) ret->next = xmlCopyEnumeration(cur->next);
+ else ret->next = NULL;
+
+ return(ret);
+}
+#endif /* LIBXML_TREE_ENABLED */
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/**
+ * xmlDumpEnumeration:
+ * @param buf the XML buffer output
+ * @param enum An enumeration
+ *
+ * This will dump the content of the enumeration
+ */
+static void
+xmlDumpEnumeration(xmlBufferPtr buf, xmlEnumerationPtr cur) {
+ if (cur == NULL) return;
+
+ xmlBufferWriteCHAR(buf, cur->name);
+ if (cur->next == NULL)
+ xmlBufferWriteChar(buf, ")");
+ else {
+ xmlBufferWriteChar(buf, " | ");
+ xmlDumpEnumeration(buf, cur->next);
+ }
+}
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/**
+ * xmlCreateAttributeTable:
+ *
+ * create and initialize an empty attribute hash table.
+ *
+ * Returns the xmlAttributeTablePtr just created or NULL in case
+ * of error.
+ */
+static xmlAttributeTablePtr
+xmlCreateAttributeTable(void) {
+ return(xmlHashCreate(0));
+}
+
+#ifdef LIBXML_VALID_ENABLED
+/**
+ * xmlScanAttributeDeclCallback:
+ * @param attr the attribute decl
+ * @param list the list to update
+ *
+ * Callback called by xmlScanAttributeDecl when a new attribute
+ * has to be entered in the list.
+ */
+static void
+xmlScanAttributeDeclCallback(xmlAttributePtr attr, xmlAttributePtr *list,
+ const xmlChar* name ATTRIBUTE_UNUSED) {
+ attr->nexth = *list;
+ *list = attr;
+}
+
+/**
+ * xmlScanAttributeDecl:
+ * @param dtd pointer to the DTD
+ * @param elem the element name
+ *
+ * When inserting a new element scan the DtD for existing attributes
+ * for that element and initialize the Attribute chain
+ *
+ * Returns the pointer to the first attribute decl in the chain,
+ * possibly NULL.
+ */
+xmlAttributePtr
+xmlScanAttributeDecl(xmlDtdPtr dtd, const xmlChar *elem) {
+ xmlAttributePtr ret = NULL;
+ xmlAttributeTablePtr table;
+
+ if (dtd == NULL) {
+ return(NULL);
+ }
+ if (elem == NULL) {
+ return(NULL);
+ }
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ if (table == NULL)
+ return(NULL);
+
+ /* WRONG !!! */
+ xmlHashScan3(table, NULL, NULL, elem,
+ (xmlHashScanner) xmlScanAttributeDeclCallback, &ret);
+ return(ret);
+}
+
+/**
+ * xmlScanIDAttributeDecl:
+ * @param ctxt the validation context
+ * @param elem the element name
+ *
+ * Verify that the element don't have too many ID attributes
+ * declared.
+ *
+ * Returns the number of ID attributes found.
+ */
+static int
+xmlScanIDAttributeDecl(xmlValidCtxtPtr ctxt, xmlElementPtr elem) {
+ xmlAttributePtr cur;
+ int ret = 0;
+
+ if (elem == NULL) return(0);
+ cur = elem->attributes;
+ while (cur != NULL) {
+ if (cur->atype == XML_ATTRIBUTE_ID) {
+ ret ++;
+ if (ret > 1)
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_MULTIPLE_ID,
+ EMBED_ERRTXT("Element %s has too many ID attributes defined : %s\n"),
+ elem->name, cur->name, NULL);
+ }
+ cur = cur->nexth;
+ }
+ return(ret);
+}
+#endif /* LIBXML_VALID_ENABLED */
+
+/**
+ * xmlFreeAttribute:
+ * @param elem An attribute
+ *
+ * Deallocate the memory used by an attribute definition
+ */
+static void
+xmlFreeAttribute(xmlAttributePtr attr) {
+ if (attr == NULL) return;
+ xmlUnlinkNode((xmlNodePtr) attr);
+ if (attr->tree != NULL)
+ xmlFreeEnumeration(attr->tree);
+ if (attr->elem != NULL)
+ xmlFree((xmlChar *) attr->elem);
+ if (attr->name != NULL)
+ xmlFree((xmlChar *) attr->name);
+ if (attr->defaultValue != NULL)
+ xmlFree((xmlChar *) attr->defaultValue);
+ if (attr->prefix != NULL)
+ xmlFree((xmlChar *) attr->prefix);
+ xmlFree(attr);
+}
+
+
+/**
+ * xmlAddAttributeDecl:
+ * @param ctxt the validation context
+ * @param dtd pointer to the DTD
+ * @param elem the element name
+ * @param name the attribute name
+ * @param ns the attribute namespace prefix
+ * @param type the attribute type
+ * @param def the attribute default type
+ * @param defaultValue the attribute default value
+ * @param tree if it's an enumeration, the associated list
+ *
+ * Register a new attribute declaration
+ * Note that tree becomes the ownership of the DTD
+ *
+ * Returns NULL if not new, otherwise the attribute decl
+ */
+XMLPUBFUNEXPORT xmlAttributePtr
+xmlAddAttributeDecl(xmlValidCtxtPtr ctxt,
+ xmlDtdPtr dtd, const xmlChar *elem,
+ const xmlChar *name, const xmlChar *ns,
+ xmlAttributeType type, xmlAttributeDefault def,
+ const xmlChar *defaultValue, xmlEnumerationPtr tree) {
+ xmlAttributePtr ret;
+ xmlAttributeTablePtr table;
+ xmlElementPtr elemDef;
+ LOAD_GS_SAFE_DTD(dtd)
+
+ if (dtd == NULL) {
+ xmlFreeEnumeration(tree);
+ return(NULL);
+ }
+ if (name == NULL) {
+ xmlFreeEnumeration(tree);
+ return(NULL);
+ }
+ if (elem == NULL) {
+ xmlFreeEnumeration(tree);
+ return(NULL);
+ }
+
+#ifdef LIBXML_VALID_ENABLED
+ /*
+ * Check the type and possibly the default value.
+ */
+ switch (type) {
+ case XML_ATTRIBUTE_CDATA:
+ break;
+ case XML_ATTRIBUTE_ID:
+ break;
+ case XML_ATTRIBUTE_IDREF:
+ break;
+ case XML_ATTRIBUTE_IDREFS:
+ break;
+ case XML_ATTRIBUTE_ENTITY:
+ break;
+ case XML_ATTRIBUTE_ENTITIES:
+ break;
+ case XML_ATTRIBUTE_NMTOKEN:
+ break;
+ case XML_ATTRIBUTE_NMTOKENS:
+ break;
+ case XML_ATTRIBUTE_ENUMERATION:
+ break;
+ case XML_ATTRIBUTE_NOTATION:
+ break;
+ default:
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ATTRIBUTE struct corrupted invalid type\n"),
+ NULL);
+ xmlFreeEnumeration(tree);
+ return(NULL);
+ }
+ if ((defaultValue != NULL) &&
+ (!xmlValidateAttributeValue(type, defaultValue))) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) dtd, XML_DTD_ATTRIBUTE_DEFAULT,
+ EMBED_ERRTXT("Attribute %s of %s: invalid default value\n"),
+ elem, name, defaultValue);
+ defaultValue = NULL;
+ ctxt->valid = 0;
+ }
+#endif /* LIBXML_VALID_ENABLED */
+
+ /*
+ * Check first that an attribute defined in the external subset wasn't
+ * already defined in the internal subset
+ */
+ if ((dtd->doc != NULL) && (dtd->doc->extSubset == dtd) &&
+ (dtd->doc->intSubset != NULL) &&
+ (dtd->doc->intSubset->attributes != NULL)) {
+ ret = (xmlAttributePtr)xmlHashLookup3((xmlHashTablePtr)dtd->doc->intSubset->attributes, name, ns, elem);
+ if (ret != NULL)
+ return(NULL);
+ }
+
+ /*
+ * Create the Attribute table if needed.
+ */
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ if (table == NULL) {
+ table = xmlCreateAttributeTable();
+ dtd->attributes = (void *) table;
+ }
+ if (table == NULL) {
+ xmlVErrMemory(ctxt,
+ EMBED_ERRTXT("xmlAddAttributeDecl: Table creation failed!\n"));
+ return(NULL);
+ }
+
+
+ ret = (xmlAttributePtr) xmlMalloc(sizeof(xmlAttribute));
+ if (ret == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlAttribute));
+ ret->type = XML_ATTRIBUTE_DECL;
+
+ /*
+ * fill the structure.
+ */
+ ret->atype = type;
+ ret->name = xmlStrdup(name);
+ ret->prefix = xmlStrdup(ns);
+ ret->elem = xmlStrdup(elem);
+ ret->def = def;
+ ret->tree = tree;
+ if (defaultValue)
+ ret->defaultValue = xmlStrdup(defaultValue);
+
+ if(OOM_FLAG) {
+ xmlFreeAttribute(ret);
+ return(NULL);
+ }
+
+ /*
+ * Validity Check:
+ * Search the DTD for previous declarations of the ATTLIST
+ */
+ if (xmlHashAddEntry3(table, name, ns, elem, ret) < 0) {
+#ifdef LIBXML_VALID_ENABLED
+ /*
+ * The attribute is already defined in this DTD.
+ */
+ xmlErrValidWarning(ctxt, (xmlNodePtr) dtd, XML_DTD_ATTRIBUTE_REDEFINED,
+ EMBED_ERRTXT("Attribute %s of element %s: already defined\n"),
+ name, elem, NULL);
+#endif /* LIBXML_VALID_ENABLED */
+ xmlFreeAttribute(ret);
+ return(NULL);
+ }
+
+ /*
+ * Validity Check:
+ * Multiple ID per element
+ */
+ elemDef = xmlGetDtdElementDesc2(dtd, elem, 1);
+ if (elemDef != NULL) {
+
+#ifdef LIBXML_VALID_ENABLED
+ if ((type == XML_ATTRIBUTE_ID) &&
+ (xmlScanIDAttributeDecl(NULL, elemDef) != 0)) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) dtd, XML_DTD_MULTIPLE_ID,
+ EMBED_ERRTXT("Element %s has too may ID attributes defined : %s\n"),
+ elem, name, NULL);
+ ctxt->valid = 0;
+ }
+#endif /* LIBXML_VALID_ENABLED */
+
+ /*
+ * Insert namespace default def first they need to be
+ * processed first.
+ */
+ if ((xmlStrEqual(ret->name, BAD_CAST "xmlns")) ||
+ ((ret->prefix != NULL &&
+ (xmlStrEqual(ret->prefix, BAD_CAST "xmlns"))))) {
+ ret->nexth = elemDef->attributes;
+ elemDef->attributes = ret;
+ } else {
+ xmlAttributePtr tmp = elemDef->attributes;
+
+ while ((tmp != NULL) &&
+ ((xmlStrEqual(tmp->name, BAD_CAST "xmlns")) ||
+ ((ret->prefix != NULL &&
+ (xmlStrEqual(ret->prefix, BAD_CAST "xmlns")))))) {
+ if (tmp->nexth == NULL)
+ break;
+ tmp = tmp->nexth;
+ }
+ if (tmp != NULL) {
+ ret->nexth = tmp->nexth;
+ tmp->nexth = ret;
+ } else {
+ ret->nexth = elemDef->attributes;
+ elemDef->attributes = ret;
+ }
+ }
+ }
+
+ /*
+ * Link it to the DTD
+ */
+ ret->parent = dtd;
+ ret->doc = dtd->doc;
+ if (dtd->last == NULL) {
+ dtd->children = dtd->last = (xmlNodePtr) ret;
+ } else {
+ dtd->last->next = (xmlNodePtr) ret;
+ ret->prev = dtd->last;
+ dtd->last = (xmlNodePtr) ret;
+ }
+ return(ret);
+}
+
+/**
+ * xmlFreeAttributeTable:
+ * @param table An attribute table
+ *
+ * Deallocate the memory used by an entities hash table.
+ */
+XMLPUBFUNEXPORT void
+xmlFreeAttributeTable(xmlAttributeTablePtr table) {
+ xmlHashFree(table, (xmlHashDeallocator) xmlFreeAttribute);
+}
+
+#ifdef LIBXML_TREE_ENABLED
+/**
+ * xmlCopyAttribute:
+ * @param attr An attribute
+ *
+ * Build a copy of an attribute.
+ *
+ * Returns the new xmlAttributePtr or NULL in case of error.
+ */
+static xmlAttributePtr
+xmlCopyAttribute(xmlAttributePtr attr) {
+ xmlAttributePtr cur;
+
+ cur = (xmlAttributePtr) xmlMalloc(sizeof(xmlAttribute));
+ if (cur == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(cur, 0, sizeof(xmlAttribute));
+ cur->type = XML_ATTRIBUTE_DECL;
+ cur->atype = attr->atype;
+ cur->def = attr->def;
+ cur->tree = xmlCopyEnumeration(attr->tree);
+ if (attr->elem != NULL)
+ cur->elem = xmlStrdup(attr->elem);
+ if (attr->name != NULL)
+ cur->name = xmlStrdup(attr->name);
+ if (attr->prefix != NULL)
+ cur->prefix = xmlStrdup(attr->prefix);
+ if (attr->defaultValue != NULL)
+ cur->defaultValue = xmlStrdup(attr->defaultValue);
+ return(cur);
+}
+
+/**
+ * xmlCopyAttributeTable:
+ * @param table An attribute table
+ *
+ * Build a copy of an attribute table.
+ *
+ * Returns the new xmlAttributeTablePtr or NULL in case of error.
+ *
+ * OOM: possible --> returns NULL with OOM flag set
+ */
+XMLPUBFUNEXPORT xmlAttributeTablePtr
+xmlCopyAttributeTable(xmlAttributeTablePtr table) {
+
+ return((xmlAttributeTablePtr) xmlHashCopy(table,
+ (xmlHashCopier) xmlCopyAttribute));
+}
+#endif /* LIBXML_TREE_ENABLED */
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/**
+ * xmlDumpAttributeDecl:
+ * @param buf the XML buffer output
+ * @param attr An attribute declaration
+ *
+ * This will dump the content of the attribute declaration as an XML
+ * DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpAttributeDecl(xmlBufferPtr buf, xmlAttributePtr attr) {
+ xmlBufferWriteChar(buf, "<!ATTLIST ");
+ xmlBufferWriteCHAR(buf, attr->elem);
+ xmlBufferWriteChar(buf, " ");
+ if (attr->prefix != NULL) {
+ xmlBufferWriteCHAR(buf, attr->prefix);
+ xmlBufferWriteChar(buf, ":");
+ }
+ xmlBufferWriteCHAR(buf, attr->name);
+ switch (attr->atype) {
+ case XML_ATTRIBUTE_CDATA:
+ xmlBufferWriteChar(buf, " CDATA");
+ break;
+ case XML_ATTRIBUTE_ID:
+ xmlBufferWriteChar(buf, " ID");
+ break;
+ case XML_ATTRIBUTE_IDREF:
+ xmlBufferWriteChar(buf, " IDREF");
+ break;
+ case XML_ATTRIBUTE_IDREFS:
+ xmlBufferWriteChar(buf, " IDREFS");
+ break;
+ case XML_ATTRIBUTE_ENTITY:
+ xmlBufferWriteChar(buf, " ENTITY");
+ break;
+ case XML_ATTRIBUTE_ENTITIES:
+ xmlBufferWriteChar(buf, " ENTITIES");
+ break;
+ case XML_ATTRIBUTE_NMTOKEN:
+ xmlBufferWriteChar(buf, " NMTOKEN");
+ break;
+ case XML_ATTRIBUTE_NMTOKENS:
+ xmlBufferWriteChar(buf, " NMTOKENS");
+ break;
+ case XML_ATTRIBUTE_ENUMERATION:
+ xmlBufferWriteChar(buf, " (");
+ xmlDumpEnumeration(buf, attr->tree);
+ break;
+ case XML_ATTRIBUTE_NOTATION:
+ xmlBufferWriteChar(buf, " NOTATION (");
+ xmlDumpEnumeration(buf, attr->tree);
+ break;
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ATTRIBUTE struct corrupted invalid type\n"),
+ NULL);
+ }
+ switch (attr->def) {
+ case XML_ATTRIBUTE_NONE:
+ break;
+ case XML_ATTRIBUTE_REQUIRED:
+ xmlBufferWriteChar(buf, " #REQUIRED");
+ break;
+ case XML_ATTRIBUTE_IMPLIED:
+ xmlBufferWriteChar(buf, " #IMPLIED");
+ break;
+ case XML_ATTRIBUTE_FIXED:
+ xmlBufferWriteChar(buf, " #FIXED");
+ break;
+ default:
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Internal: ATTRIBUTE struct corrupted invalid def\n"),
+ NULL);
+ }
+ if (attr->defaultValue != NULL) {
+ xmlBufferWriteChar(buf, " ");
+ xmlBufferWriteQuotedString(buf, attr->defaultValue);
+ }
+ xmlBufferWriteChar(buf, ">\n");
+}
+
+/**
+ * xmlDumpAttributeDeclScan:
+ * @param attr An attribute declaration
+ * @param buf the XML buffer output
+ *
+ * This is used with the hash scan function - just reverses arguments
+ */
+static void
+xmlDumpAttributeDeclScan(xmlAttributePtr attr, xmlBufferPtr buf) {
+ xmlDumpAttributeDecl(buf, attr);
+}
+
+/**
+ * xmlDumpAttributeTable:
+ * @param buf the XML buffer output
+ * @param table An attribute table
+ *
+ * This will dump the content of the attribute table as an XML DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpAttributeTable(xmlBufferPtr buf, xmlAttributeTablePtr table) {
+ xmlHashScan(table, (xmlHashScanner) xmlDumpAttributeDeclScan, buf);
+}
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/************************************************************************
+ * *
+ * NOTATIONs *
+ * *
+ ************************************************************************/
+/**
+ * xmlCreateNotationTable:
+ *
+ * create and initialize an empty notation hash table.
+ *
+ * Returns the xmlNotationTablePtr just created or NULL in case
+ * of error.
+ */
+static xmlNotationTablePtr
+xmlCreateNotationTable(void) {
+ return(xmlHashCreate(0));
+}
+
+/**
+ * xmlFreeNotation:
+ * @param not A notation
+ *
+ * Deallocate the memory used by an notation definition
+ */
+static void
+xmlFreeNotation(xmlNotationPtr nota) {
+ if (nota == NULL) return;
+ if (nota->name != NULL)
+ xmlFree((xmlChar *) nota->name);
+ if (nota->PublicID != NULL)
+ xmlFree((xmlChar *) nota->PublicID);
+ if (nota->SystemID != NULL)
+ xmlFree((xmlChar *) nota->SystemID);
+ xmlFree(nota);
+}
+
+
+/**
+ * xmlAddNotationDecl:
+ * @param dtd pointer to the DTD
+ * @param ctxt the validation context
+ * @param name the entity name
+ * @param PublicID the public identifier or NULL
+ * @param SystemID the system identifier or NULL
+ *
+ * Register a new notation declaration
+ *
+ * Returns NULL if not, otherwise the entity
+ */
+XMLPUBFUNEXPORT xmlNotationPtr
+xmlAddNotationDecl(xmlValidCtxtPtr ctxt, xmlDtdPtr dtd,
+ const xmlChar *name,
+ const xmlChar *PublicID, const xmlChar *SystemID) {
+ xmlNotationPtr ret;
+ xmlNotationTablePtr table;
+
+ if (dtd == NULL) {
+ return(NULL);
+ }
+ if (name == NULL) {
+ return(NULL);
+ }
+ if ((PublicID == NULL) && (SystemID == NULL)) {
+ return(NULL);
+ }
+
+ /*
+ * Create the Notation table if needed.
+ */
+ table = (xmlNotationTablePtr) dtd->notations;
+ if (table == NULL)
+ dtd->notations = table = xmlCreateNotationTable();
+ if (table == NULL) {
+ xmlVErrMemory(ctxt,
+ EMBED_ERRTXT("xmlAddNotationDecl: Table creation failed!\n"));
+ return(NULL);
+ }
+
+ ret = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation));
+ if (ret == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlNotation));
+
+ /*
+ * fill the structure.
+ */
+ ret->name = xmlStrdup(name);
+ if (SystemID != NULL)
+ ret->SystemID = xmlStrdup(SystemID);
+ if (PublicID != NULL)
+ ret->PublicID = xmlStrdup(PublicID);
+
+ /*
+ * Validity Check:
+ * Check the DTD for previous declarations of the ATTLIST
+ */
+ if (xmlHashAddEntry(table, name, ret)) {
+#ifdef LIBXML_VALID_ENABLED
+ xmlErrValid(NULL, XML_DTD_NOTATION_REDEFINED,
+ EMBED_ERRTXT("xmlAddNotationDecl: %s already defined\n"),
+ (const char *) name);
+#endif /* LIBXML_VALID_ENABLED */
+ xmlFreeNotation(ret);
+ return(NULL);
+ }
+ return(ret);
+}
+
+/**
+ * xmlFreeNotationTable:
+ * @param table An notation table
+ *
+ * Deallocate the memory used by an entities hash table.
+ */
+XMLPUBFUNEXPORT void
+xmlFreeNotationTable(xmlNotationTablePtr table) {
+ xmlHashFree(table, (xmlHashDeallocator) xmlFreeNotation);
+}
+
+#ifdef LIBXML_TREE_ENABLED
+/**
+ * xmlCopyNotation:
+ * @param nota A notation
+ *
+ * Build a copy of a notation.
+ *
+ * Returns the new xmlNotationPtr or NULL in case of error.
+ */
+static xmlNotationPtr
+xmlCopyNotation(xmlNotationPtr nota) {
+ xmlNotationPtr cur;
+
+ cur = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation));
+ if (cur == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ if (nota->name != NULL)
+ cur->name = xmlStrdup(nota->name);
+ else
+ cur->name = NULL;
+ if (nota->PublicID != NULL)
+ cur->PublicID = xmlStrdup(nota->PublicID);
+ else
+ cur->PublicID = NULL;
+ if (nota->SystemID != NULL)
+ cur->SystemID = xmlStrdup(nota->SystemID);
+ else
+ cur->SystemID = NULL;
+ return(cur);
+}
+
+/**
+ * xmlCopyNotationTable:
+ * @param table A notation table
+ *
+ * Build a copy of a notation table.
+ *
+ * Returns the new xmlNotationTablePtr or NULL in case of error.
+ *
+ * OOM: possible --> returns NULL and OOM flag is set
+ */
+XMLPUBFUNEXPORT xmlNotationTablePtr
+xmlCopyNotationTable(xmlNotationTablePtr table) {
+
+ return((xmlNotationTablePtr) xmlHashCopy(table,
+ (xmlHashCopier) xmlCopyNotation));
+}
+#endif /* LIBXML_TREE_ENABLED */
+
+#ifdef LIBXML_OUTPUT_ENABLED
+/**
+ * xmlDumpNotationDecl:
+ * @param buf the XML buffer output
+ * @param nota A notation declaration
+ *
+ * This will dump the content the notation declaration as an XML DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpNotationDecl(xmlBufferPtr buf, xmlNotationPtr nota) {
+ xmlBufferWriteChar(buf, "<!NOTATION ");
+ xmlBufferWriteCHAR(buf, nota->name);
+ if (nota->PublicID != NULL) {
+ xmlBufferWriteChar(buf, " PUBLIC ");
+ xmlBufferWriteQuotedString(buf, nota->PublicID);
+ if (nota->SystemID != NULL) {
+ xmlBufferWriteChar(buf, " ");
+ xmlBufferWriteCHAR(buf, nota->SystemID);
+ }
+ } else {
+ xmlBufferWriteChar(buf, " SYSTEM ");
+ xmlBufferWriteCHAR(buf, nota->SystemID);
+ }
+ xmlBufferWriteChar(buf, " >\n");
+}
+
+/**
+ * xmlDumpNotationDeclScan:
+ * @param nota A notation declaration
+ * @param buf the XML buffer output
+ *
+ * This is called with the hash scan function, and just reverses args
+ */
+static void
+xmlDumpNotationDeclScan(xmlNotationPtr nota, xmlBufferPtr buf) {
+ xmlDumpNotationDecl(buf, nota);
+}
+
+/**
+ * xmlDumpNotationTable:
+ * @param buf the XML buffer output
+ * @param table A notation table
+ *
+ * This will dump the content of the notation table as an XML DTD definition
+ */
+XMLPUBFUNEXPORT void
+xmlDumpNotationTable(xmlBufferPtr buf, xmlNotationTablePtr table) {
+ xmlHashScan(table, (xmlHashScanner) xmlDumpNotationDeclScan, buf);
+}
+#endif /* LIBXML_OUTPUT_ENABLED */
+
+/************************************************************************
+ * *
+ * IDs *
+ * *
+ ************************************************************************/
+/**
+ * DICT_FREE:
+ * @param str a string
+ *
+ * Free a string if it is not owned by the "dict" dictionnary in the
+ * current scope
+ */
+#define DICT_FREE(str) \
+ if ((str) && ((!dict) || \
+ (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
+ xmlFree((char *)(str));
+
+/**
+ * xmlCreateIDTable:
+ *
+ * create and initialize an empty id hash table.
+ *
+ * Returns the xmlIDTablePtr just created or NULL in case
+ * of error.
+ */
+static xmlIDTablePtr
+xmlCreateIDTable(void) {
+ return(xmlHashCreate(0));
+}
+
+/**
+ * xmlFreeID:
+ * @param not A id
+ *
+ * Deallocate the memory used by an id definition
+ */
+static void
+xmlFreeID(xmlIDPtr id) {
+ xmlDictPtr dict = NULL;
+
+ if (id == NULL) return;
+
+ if (id->doc)
+ dict = id->doc->dict;
+
+ if (id->value)
+ DICT_FREE(id->value)
+ if (id->name)
+ DICT_FREE(id->name)
+ xmlFree(id);
+}
+
+
+/**
+ * xmlAddID:
+ * @param ctxt the validation context
+ * @param doc pointer to the document
+ * @param value the value name
+ * @param attr the attribute holding the ID
+ *
+ * Register a new id declaration
+ *
+ * Returns NULL if not, otherwise the new xmlIDPtr
+ *
+ * OOM: possible --> check OOM flag if returns NULL
+ */
+XMLPUBFUNEXPORT xmlIDPtr
+xmlAddID(xmlValidCtxtPtr ctxt, xmlDocPtr doc, const xmlChar* value, xmlAttrPtr attr)
+{
+ xmlIDPtr ret;
+ xmlIDTablePtr table;
+
+ if (!doc || !value || !attr)
+ return(NULL);
+
+ /*
+ * Create the ID table if needed.
+ */
+ table = (xmlIDTablePtr) doc->ids;
+ if (table == NULL)
+ doc->ids = table = xmlCreateIDTable();
+ if (!table) {
+ xmlVErrMemory(ctxt,
+ EMBED_ERRTXT("xmlAddID: Table creation failed!\n"));
+ return(NULL);
+ }
+
+ ret = (xmlIDPtr) xmlMalloc(sizeof(xmlID));
+ if (!ret) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(ret, 0, sizeof(xmlID));
+
+ /*
+ * fill the structure.
+ */
+ ret->value = xmlStrdup(value);
+ if(!ret->value)
+ goto OOM; // note: value is not NULL for sure!
+
+ ret->doc = doc;
+ if (ctxt && (ctxt->vstateNr != 0))
+ {
+ /*
+ * Operating in streaming mode, attr is gonna disapear
+ */
+ if (doc->dict)
+ ret->name = xmlDictLookup(doc->dict, attr->name, -1);
+ else
+ {
+ ret->name = xmlStrdup(attr->name);
+ if(!ret->name)
+ goto OOM; // attr->name may not be NULL
+ }
+ ret->attr = NULL;
+ } else {
+ ret->attr = attr;
+ ret->name = NULL;
+ }
+
+#ifdef LIBXML_ENABLE_NODE_LINEINFO
+ ret->lineno = xmlGetLineNo(attr->parent);
+#endif
+
+ if (xmlHashAddEntry(table, value, ret) < 0) {
+#ifdef LIBXML_VALID_ENABLED
+ /*
+ * The id is already defined in this DTD.
+ */
+ if ((ctxt != NULL) && (ctxt->error != NULL)) {
+ xmlErrValidNode(ctxt, attr->parent, XML_DTD_ID_REDEFINED,
+ EMBED_ERRTXT("ID %s already defined\n"),
+ value, NULL, NULL);
+ }
+#endif /* LIBXML_VALID_ENABLED */
+OOM:
+ xmlFreeID(ret);
+ return(NULL);
+ }
+ // DONE: removed redundant check: // if (attr)
+ attr->atype = XML_ATTRIBUTE_ID;
+ return(ret);
+}
+
+/**
+ * xmlFreeIDTable:
+ * @param table An id table
+ *
+ * Deallocate the memory used by an ID hash table.
+ */
+XMLPUBFUNEXPORT void
+xmlFreeIDTable(xmlIDTablePtr table) {
+ xmlHashFree(table, (xmlHashDeallocator) xmlFreeID);
+}
+
+/**
+ * xmlIsID:
+ * @param doc the document
+ * @param elem the element carrying the attribute
+ * @param attr the attribute
+ *
+ * Determine whether an attribute is of type ID. In case we have DTD(s)
+ * then this is done if DTD loading has been requested. In the case
+ * of HTML documents parsed with the HTML parser, then ID detection is
+ * done systematically.
+ *
+ * Returns 0 or 1 depending on the lookup result
+ *
+ * OOM: possible --> set OOM flag when returns 0
+ */
+XMLPUBFUNEXPORT int
+xmlIsID(xmlDocPtr doc, xmlNodePtr elem, xmlAttrPtr attr)
+{
+ LOAD_GS_SAFE_DOC(doc)
+ // DONE: Optimized: if elem is NULL it always returs 0 (in all branches)
+ if (!doc || !attr || !elem ||
+ (!doc->intSubset && !doc->extSubset))
+ {
+ return(0);
+ }
+ if (doc->type == XML_HTML_DOCUMENT_NODE)
+ {
+ if ((xmlStrEqual(BAD_CAST "id", attr->name) ||
+ xmlStrEqual(BAD_CAST "name", attr->name))
+ &&
+ !xmlStrEqual(elem->name, BAD_CAST "input"))
+ {
+ return(1);
+ }
+ return(0);
+ }
+ else
+ { // we have XML document
+ xmlAttributePtr attrDecl;
+
+ //DONE: 'elem' is check before; REMOVED: if (!elem) return(0);
+ if (elem->ns && elem->ns->prefix)
+ {
+ xmlChar fn[50];
+ xmlChar* fullname;
+
+ fullname = xmlBuildQName(elem->name, elem->ns->prefix, fn, 50); // may set OOM flag
+ if (!fullname)
+ return(0);
+
+ attrDecl = xmlGetDtdAttrDesc(
+ doc->intSubset,
+ fullname,
+ attr->name);
+ //-
+ if(OOM_FLAG)
+ goto end;
+ //-
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ {
+ attrDecl = xmlGetDtdAttrDesc(
+ doc->extSubset,
+ fullname,
+ attr->name);
+ //-
+ if(OOM_FLAG)
+ goto end;
+ //-
+ }
+ if ((fullname != fn) && (fullname != elem->name))
+ xmlFree(fullname);
+ } else {
+ attrDecl = xmlGetDtdAttrDesc(
+ doc->intSubset,
+ elem->name,
+ attr->name);
+ //-
+ if(OOM_FLAG)
+ goto end;
+ //-
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ {
+ attrDecl = xmlGetDtdAttrDesc(
+ doc->extSubset,
+ elem->name,
+ attr->name);
+ //-
+ if(OOM_FLAG)
+ goto end;
+ //-
+ }
+ }
+
+ if ((attrDecl != NULL) && (attrDecl->atype == XML_ATTRIBUTE_ID))
+ return(1);
+ }
+end:
+ return(0);
+}
+
+/**
+ * xmlRemoveID:
+ * @param doc the document
+ * @param attr the attribute
+ *
+ * Remove the given attribute from the ID table maintained internally.
+ *
+ * Returns -1 if the lookup failed and 0 otherwise
+ */
+XMLPUBFUNEXPORT int
+xmlRemoveID(xmlDocPtr doc, xmlAttrPtr attr)
+{
+ xmlIDTablePtr table;
+ xmlIDPtr id;
+ xmlChar* ID;
+
+ if (!doc || !attr || !doc->ids)
+ return(-1);
+ table = (xmlIDTablePtr) doc->ids;
+
+ ID = xmlNodeListGetString(doc, attr->children, 1);
+ if (!ID)
+ return(-1);
+
+ id = (xmlIDPtr)xmlHashLookup(table, ID);
+ if (!id || id->attr != attr) {
+ xmlFree(ID);
+ return(-1);
+ }
+ xmlHashUpdateEntry(table, ID, NULL, (xmlHashDeallocator) xmlFreeID);
+ xmlFree(ID);
+ return(0);
+}
+
+/**
+ * xmlGetID:
+ * @param doc pointer to the document
+ * @param ID the ID value
+ *
+ * Search the attribute declaring the given ID
+ *
+ * Returns NULL if not found, otherwise the xmlAttrPtr defining the ID
+ */
+XMLPUBFUNEXPORT xmlAttrPtr
+xmlGetID(xmlDocPtr doc, const xmlChar* ID)
+{
+ xmlIDTablePtr table;
+ xmlIDPtr id;
+
+ if (!doc || !doc->ids || !ID)
+ return(NULL);
+
+ table = (xmlIDTablePtr) doc->ids;
+
+ id = (xmlIDPtr)xmlHashLookup(table, ID);
+ if (id == NULL)
+ return(NULL);
+ if (!id->attr) {
+ /*
+ * We are operating on a stream, return a well known reference
+ * since the attribute node doesn't exist anymore
+ */
+ return((xmlAttrPtr) doc);
+ }
+ return(id->attr);
+}
+
+// forward declaration
+int xmlAddIDsInternal(xmlDocPtr doc, xmlNodePtr cur, const xmlChar** ids);
+
+/**
+ * xmlAddIDs:
+ * @param root: the pointer to an XML node.
+ * @param ids: the pointer to a NULL terminated list of pairs {name, uri}
+ for looked up ID attributes.
+ * @return result code:
+ 0 if OK;
+ -1 if duplication of ID happend;
+ -2 if OOM;
+ -3 if invalid arguments
+ *
+ * Recursively walks through all children of the root node and adds all attributes
+ * from the ids list to the root's document's IDs attributes hash.
+ *
+ *
+ *
+ *
+ * Prerequisites: TRUE == root && root->docs
+ * OOM: possible
+ */
+XMLPUBFUNEXPORT int
+xmlAddIDs(xmlNodePtr root, const xmlChar** ids)
+{
+ int ret;
+ LOAD_GS_SAFE_NODE(root)
+
+ if(!root || !root->doc)
+ return -3;
+
+ ret = xmlAddIDsInternal(root->doc, root, ids);
+ if(OOM_FLAG)
+ ret = -2;
+
+ return ret;
+}
+
+int
+xmlAddIDsInternal(xmlDocPtr doc, xmlNodePtr cur, const xmlChar** ids)
+{
+ int ret = 0;
+ xmlNodePtr children = NULL;
+
+ if(cur && cur->type == XML_ELEMENT_NODE)
+ {
+ int i;
+ xmlAttrPtr attr;
+ const xmlChar* idAttrName;
+ //const xmlChar* idAttrUri;
+
+ for(attr = cur->properties; attr; attr = attr->next)
+ {
+ for(i = 0; (idAttrName = ids[i]); i += 2)
+ {
+ if (xmlStrEqual(attr->name, idAttrName) &&
+ ((attr->ns && xmlStrEqual(attr->ns->href,ids[i+1])) || (!attr->ns && !ids[i+1])))
+ {
+ // Matching attribute found, get value (into 'name')
+ // and create ID info in the document
+ xmlChar* name = xmlNodeListGetString(doc, attr->children, 1);
+ if(name)
+ {
+ xmlAttrPtr tmp = xmlGetID(doc, name);
+ if(!tmp)
+ { // No such ID yet, try to add it
+ if(!xmlAddID(NULL, doc, name, attr))
+ {
+ ret = -2; // OOM
+ }
+ }
+ else if(tmp != attr)
+ {
+ ret = -1; // already defined
+ }
+ xmlFree(name);
+ if(ret < 0)
+ return ret;
+ }
+ }
+ }
+ }
+
+ children = cur->children;
+ }
+ else if(!cur)
+ {
+ children = doc->children;
+ }
+
+ while(children) {
+ if(children->type == XML_ELEMENT_NODE) {
+ ret = xmlAddIDsInternal(doc, children, ids);
+ if(ret != 0)
+ return ret;
+ }
+ children = children->next;
+ }
+ return ret;
+}
+
+
+/************************************************************************
+ * *
+ * Refs *
+ * *
+ ************************************************************************/
+typedef struct xmlRemoveMemo_t
+{
+ xmlListPtr l;
+ xmlAttrPtr ap;
+} xmlRemoveMemo;
+
+typedef xmlRemoveMemo *xmlRemoveMemoPtr;
+
+typedef struct xmlValidateMemo_t
+{
+ xmlValidCtxtPtr ctxt;
+ const xmlChar *name;
+} xmlValidateMemo;
+
+typedef xmlValidateMemo *xmlValidateMemoPtr;
+
+/**
+ * xmlCreateRefTable:
+ *
+ * create and initialize an empty ref hash table.
+ *
+ * Returns the xmlRefTablePtr just created or NULL in case
+ * of error.
+ */
+static xmlRefTablePtr
+xmlCreateRefTable(void) {
+ return(xmlHashCreate(0));
+}
+
+/**
+ * xmlFreeRef:
+ * @param lk A list link
+ *
+ * Deallocate the memory used by a ref definition
+ */
+static void
+xmlFreeRef(xmlLinkPtr lk) {
+ xmlRefPtr ref = (xmlRefPtr)xmlLinkGetData(lk);
+ if (ref == NULL) return;
+ if (ref->value != NULL)
+ xmlFree((xmlChar *)ref->value);
+ if (ref->name != NULL)
+ xmlFree((xmlChar *)ref->name);
+ xmlFree(ref);
+}
+
+/**
+ * xmlFreeRefList:
+ * @param list_ref A list of references.
+ *
+ * Deallocate the memory used by a list of references
+ */
+static void
+xmlFreeRefList(xmlListPtr list_ref) {
+ if (list_ref == NULL) return;
+ xmlListDelete(list_ref);
+}
+
+/**
+ * xmlWalkRemoveRef:
+ * @param data Contents of current link
+ * @param user Value supplied by the user
+ *
+ * Returns 0 to abort the walk or 1 to continue
+ */
+static int
+xmlWalkRemoveRef(const void *data, const void *user)
+{
+ xmlAttrPtr attr0 = ((xmlRefPtr)data)->attr;
+ xmlAttrPtr attr1 = ((xmlRemoveMemoPtr)user)->ap;
+ xmlListPtr ref_list = ((xmlRemoveMemoPtr)user)->l;
+
+ if (attr0 == attr1) { /* Matched: remove and terminate walk */
+ xmlListRemoveFirst(ref_list, (void *)data);
+ return 0;
+ }
+ return 1;
+}
+
+/**
+ * xmlDummyCompare
+ * @param data0 Value supplied by the user
+ * @param data1 Value supplied by the user
+ *
+ * Do nothing, return 0. Used to create unordered lists.
+ */
+static int
+xmlDummyCompare(const void *data0 ATTRIBUTE_UNUSED,
+ const void *data1 ATTRIBUTE_UNUSED)
+{
+ return (0);
+}
+
+/**
+ * xmlAddRef:
+ * @param ctxt the validation context
+ * @param doc pointer to the document
+ * @param value the value name
+ * @param attr the attribute holding the Ref
+ *
+ * Register a new ref declaration
+ *
+ * Returns NULL if not, otherwise the new xmlRefPtr
+ */
+XMLPUBFUNEXPORT xmlRefPtr
+xmlAddRef(xmlValidCtxtPtr ctxt, xmlDocPtr doc, const xmlChar *value,
+ xmlAttrPtr attr) {
+ xmlRefPtr ret;
+ xmlRefTablePtr table;
+ xmlListPtr ref_list;
+
+ if (doc == NULL) {
+ return(NULL);
+ }
+ if (value == NULL) {
+ return(NULL);
+ }
+ if (attr == NULL) {
+ return(NULL);
+ }
+
+ /*
+ * Create the Ref table if needed.
+ */
+ table = (xmlRefTablePtr) doc->refs;
+ if (table == NULL)
+ doc->refs = table = xmlCreateRefTable();
+ if (table == NULL) {
+ xmlVErrMemory(ctxt,
+ EMBED_ERRTXT("xmlAddRef: Table creation failed!\n"));
+ return(NULL);
+ }
+
+ ret = (xmlRefPtr) xmlMalloc(sizeof(xmlRef));
+ if (ret == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+
+ /*
+ * fill the structure.
+ */
+ ret->value = xmlStrdup(value);
+ if ((ctxt != NULL) && (ctxt->vstateNr != 0))
+ {
+ /*
+ * Operating in streaming mode, attr is gonna disapear
+ */
+ ret->name = xmlStrdup(attr->name);
+ ret->attr = NULL;
+ } else {
+ ret->name = NULL;
+ ret->attr = attr;
+ }
+
+#ifdef LIBXML_ENABLE_NODE_LINEINFO
+ ret->lineno = xmlGetLineNo(attr->parent);
+#endif
+
+ /* To add a reference :-
+ * References are maintained as a list of references,
+ * Lookup the entry, if no entry create new nodelist
+ * Add the owning node to the NodeList
+ * Return the ref
+ */
+
+ if (NULL == (ref_list = (xmlListPtr)xmlHashLookup(table, value))) {
+ if (NULL == (ref_list = xmlListCreate(xmlFreeRef, xmlDummyCompare))) {
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddRef: Reference list creation failed!\n"),
+ NULL);
+ return(NULL);
+ }
+ if (xmlHashAddEntry(table, value, ref_list) < 0) {
+ xmlListDelete(ref_list);
+ xmlErrValid(NULL, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlAddRef: Reference list insertion failed!\n"),
+ NULL);
+ return(NULL);
+ }
+ }
+/* xmlListInsert(ref_list, ret); */
+ xmlListAppend(ref_list, ret);
+ return(ret);
+}
+
+/**
+ * xmlFreeRefTable:
+ * @param table An ref table
+ *
+ * Deallocate the memory used by an Ref hash table.
+ */
+XMLPUBFUNEXPORT void
+xmlFreeRefTable(xmlRefTablePtr table) {
+ xmlHashFree(table, (xmlHashDeallocator) xmlFreeRefList);
+}
+
+/**
+ * xmlIsRef:
+ * @param doc the document
+ * @param elem the element carrying the attribute
+ * @param attr the attribute
+ *
+ * Determine whether an attribute is of type Ref. In case we have DTD(s)
+ * then this is simple, otherwise we use an heuristic: name Ref (upper
+ * or lowercase).
+ *
+ * Returns 0 or 1 depending on the lookup result
+ */
+XMLPUBFUNEXPORT int
+xmlIsRef(xmlDocPtr doc, xmlNodePtr elem, xmlAttrPtr attr) {
+ if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) {
+ return(0);
+ } else if (doc->type == XML_HTML_DOCUMENT_NODE) {
+
+ return(0);
+ } else {
+ xmlAttributePtr attrDecl;
+
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, attr->name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset,
+ elem->name, attr->name);
+
+ if ((attrDecl != NULL) &&
+ (attrDecl->atype == XML_ATTRIBUTE_IDREF ||
+ attrDecl->atype == XML_ATTRIBUTE_IDREFS))
+ return(1);
+ }
+ return(0);
+}
+
+/**
+ * xmlRemoveRef:
+ * @param doc the document
+ * @param attr the attribute
+ *
+ * Remove the given attribute from the Ref table maintained internally.
+ *
+ * Returns -1 if the lookup failed and 0 otherwise
+ */
+XMLPUBFUNEXPORT int
+xmlRemoveRef(xmlDocPtr doc, xmlAttrPtr attr) {
+ xmlListPtr ref_list;
+ xmlRefTablePtr table;
+ xmlChar *ID;
+ xmlRemoveMemo target;
+
+ if (doc == NULL) return(-1);
+ if (attr == NULL) return(-1);
+ table = (xmlRefTablePtr) doc->refs;
+ if (table == NULL)
+ return(-1);
+
+ if (attr == NULL)
+ return(-1);
+ ID = xmlNodeListGetString(doc, attr->children, 1);
+ if (ID == NULL)
+ return(-1);
+ ref_list = (xmlListPtr)xmlHashLookup(table, ID);
+
+ if(ref_list == NULL) {
+ xmlFree(ID);
+ return (-1);
+ }
+ /* At this point, ref_list refers to a list of references which
+ * have the same key as the supplied attr. Our list of references
+ * is ordered by reference address and we don't have that information
+ * here to use when removing. We'll have to walk the list and
+ * check for a matching attribute, when we find one stop the walk
+ * and remove the entry.
+ * The list is ordered by reference, so that means we don't have the
+ * key. Passing the list and the reference to the walker means we
+ * will have enough data to be able to remove the entry.
+ */
+ target.l = ref_list;
+ target.ap = attr;
+
+ /* Remove the supplied attr from our list */
+ xmlListWalk(ref_list, xmlWalkRemoveRef, &target);
+
+ /*If the list is empty then remove the list entry in the hash */
+ if (xmlListEmpty(ref_list))
+ xmlHashUpdateEntry(table, ID, NULL, (xmlHashDeallocator)
+ xmlFreeRefList);
+ xmlFree(ID);
+ return(0);
+}
+
+#ifndef XMLENGINE_EXCLUDE_UNUSED
+/**
+ * xmlGetRefs:
+ * @param doc pointer to the document
+ * @param ID the ID value
+ *
+ * Find the set of references for the supplied ID.
+ *
+ * Returns NULL if not found, otherwise node set for the ID.
+ */
+xmlListPtr
+xmlGetRefs(xmlDocPtr doc, const xmlChar *ID) {
+ xmlRefTablePtr table;
+
+ if (doc == NULL) {
+ return(NULL);
+ }
+
+ if (ID == NULL) {
+ return(NULL);
+ }
+
+ table = (xmlRefTablePtr) doc->refs;
+ if (table == NULL)
+ return(NULL);
+
+ return (xmlHashLookup(table, ID));
+}
+#endif /* ifndef XMLENGINE_EXCLUDE_UNUSED */
+
+/************************************************************************
+ * *
+ * Routines for validity checking *
+ * *
+ ************************************************************************/
+
+/**
+ * xmlGetDtdElementDesc:
+ * @param dtd a pointer to the DtD to search
+ * @param name the element name
+ *
+ * Search the DTD for the description of this element
+ *
+ * returns the xmlElementPtr if found or NULL
+ */
+
+XMLPUBFUNEXPORT xmlElementPtr
+xmlGetDtdElementDesc(xmlDtdPtr dtd, const xmlChar *name) {
+ xmlElementTablePtr table;
+ xmlElementPtr cur;
+ xmlChar *uqname = NULL, *prefix = NULL;
+
+ if ((dtd == NULL) || (name == NULL)) return(NULL);
+ if (dtd->elements == NULL)
+ return(NULL);
+ table = (xmlElementTablePtr) dtd->elements;
+
+ uqname = xmlSplitQName2(name, &prefix);
+ if (uqname != NULL)
+ name = uqname;
+ cur = (xmlElementPtr)xmlHashLookup2(table, name, prefix);
+ if (prefix != NULL) xmlFree(prefix);
+ if (uqname != NULL) xmlFree(uqname);
+ return(cur);
+}
+/**
+ * xmlGetDtdElementDesc2:
+ * @param dtd a pointer to the DtD to search
+ * @param name the element name
+ * @param create create an empty description if not found
+ *
+ * Search the DTD for the description of this element
+ *
+ * returns the xmlElementPtr if found or NULL
+ */
+
+static xmlElementPtr
+xmlGetDtdElementDesc2(xmlDtdPtr dtd, const xmlChar *name, int create) {
+ xmlElementTablePtr table;
+ xmlElementPtr cur;
+ xmlChar *uqname = NULL, *prefix = NULL;
+
+ if (dtd == NULL) return(NULL);
+ if (dtd->elements == NULL) {
+ if (!create)
+ return(NULL);
+ /*
+ * Create the Element table if needed.
+ */
+ table = (xmlElementTablePtr) dtd->elements;
+ if (table == NULL) {
+ table = xmlCreateElementTable();
+ dtd->elements = (void *) table;
+ }
+ if (table == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("element table allocation failed"));
+ return(NULL);
+ }
+ }
+ table = (xmlElementTablePtr) dtd->elements;
+
+ uqname = xmlSplitQName2(name, &prefix);
+ if (uqname != NULL)
+ name = uqname;
+ cur = (xmlElementPtr)xmlHashLookup2(table, name, prefix);
+ if ((cur == NULL) && (create)) {
+ cur = (xmlElementPtr) xmlMalloc(sizeof(xmlElement));
+ if (cur == NULL) {
+ xmlVErrMemory(NULL, EMBED_ERRTXT("malloc failed"));
+ return(NULL);
+ }
+ memset(cur, 0, sizeof(xmlElement));
+ cur->type = XML_ELEMENT_DECL;
+
+ /*
+ * fill the structure.
+ */
+ cur->name = xmlStrdup(name);
+ cur->prefix = xmlStrdup(prefix);
+ cur->etype = XML_ELEMENT_TYPE_UNDEFINED;
+
+ xmlHashAddEntry2(table, name, prefix, cur);
+ }
+ if (prefix != NULL) xmlFree(prefix);
+ if (uqname != NULL) xmlFree(uqname);
+ return(cur);
+}
+
+/**
+ * xmlGetDtdQElementDesc:
+ * @param dtd a pointer to the DtD to search
+ * @param name the element name
+ * @param prefix the element namespace prefix
+ *
+ * Search the DTD for the description of this element
+ *
+ * returns the xmlElementPtr if found or NULL
+ *
+ * OOM: never
+ */
+
+XMLPUBFUNEXPORT xmlElementPtr
+xmlGetDtdQElementDesc(xmlDtdPtr dtd, const xmlChar *name,
+ const xmlChar *prefix) {
+ xmlElementTablePtr table;
+
+ if (dtd == NULL)
+ return(NULL);
+ if (dtd->elements == NULL)
+ return(NULL);
+
+ table = (xmlElementTablePtr) dtd->elements;
+
+ return (xmlElementPtr)(xmlHashLookup2(table, name, prefix));
+}
+
+/**
+ * xmlGetDtdAttrDesc:
+ * @param dtd a pointer to the DtD to search
+ * @param elem the element name
+ * @param name the attribute name
+ *
+ * Search the DTD for the description of this attribute on
+ * this element.
+ *
+ * returns the xmlAttributePtr if found or NULL
+ *
+ * OOM: iif returns NULL and OOM flag is set
+ */
+
+XMLPUBFUNEXPORT xmlAttributePtr
+xmlGetDtdAttrDesc(xmlDtdPtr dtd, const xmlChar *elem, const xmlChar *name)
+{
+ xmlAttributeTablePtr table;
+ xmlAttributePtr cur;
+ xmlChar* uqname; // DONE: removed unneeded initialization // = NULL;
+ xmlChar* prefix; // = NULL; // xmlSplitQName2 sets it NULL as the first thing
+ LOAD_GS_SAFE_DTD(dtd)
+
+ if (!dtd || !dtd->attributes)
+ return(NULL);
+
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ // DONE: removed redundant check
+ //if (table == NULL)
+ // return(NULL);
+
+ uqname = xmlSplitQName2(name, &prefix);
+
+ if (uqname) {
+ cur = (xmlAttributePtr)xmlHashLookup3(table, uqname, prefix, elem);
+ if (prefix) xmlFree(prefix);
+ if (uqname) xmlFree(uqname);
+ } else {
+ // Check OOM
+ if(OOM_FLAG)
+ return NULL;
+ cur = (xmlAttributePtr)xmlHashLookup3(table, name, NULL, elem);
+ }
+ return(cur);
+}
+
+/**
+ * xmlGetDtdQAttrDesc:
+ * @param dtd a pointer to the DtD to search
+ * @param elem the element name
+ * @param name the attribute name
+ * @param prefix the attribute namespace prefix
+ *
+ * Search the DTD for the description of this qualified attribute on
+ * this element.
+ *
+ * returns the xmlAttributePtr if found or NULL
+ *
+ * OOM: never
+ */
+
+XMLPUBFUNEXPORT xmlAttributePtr
+xmlGetDtdQAttrDesc(xmlDtdPtr dtd, const xmlChar* elem, const xmlChar* name, const xmlChar* prefix)
+{
+ xmlAttributeTablePtr table;
+
+ if (!dtd)
+ return(NULL);
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ // For NULL table result is NULL
+ return (xmlAttributePtr)(xmlHashLookup3(table, name, prefix, elem));
+}
+
+/**
+ * xmlGetDtdNotationDesc:
+ * @param dtd a pointer to the DtD to search
+ * @param name the notation name
+ *
+ * Search the DTD for the description of this notation
+ *
+ * returns the xmlNotationPtr if found or NULL
+ */
+
+XMLPUBFUNEXPORT xmlNotationPtr
+xmlGetDtdNotationDesc(xmlDtdPtr dtd, const xmlChar *name) {
+ xmlNotationTablePtr table;
+
+ if (dtd == NULL) return(NULL);
+ if (dtd->notations == NULL) return(NULL);
+ table = (xmlNotationTablePtr) dtd->notations;
+
+ return (xmlNotationPtr)(xmlHashLookup(table, name));
+}
+
+#if defined(LIBXML_VALID_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED) || defined (XMLENGINE_XMLSCHEMA_DATATYPES)
+/**
+ * xmlValidateNotationUse:
+ * @param ctxt the validation context
+ * @param doc the document
+ * @param notationName the notation name to check
+ *
+ * Validate that the given name match a notation declaration.
+ * - [ VC: Notation Declared ]
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+XMLPUBFUNEXPORT int
+xmlValidateNotationUse(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ const xmlChar *notationName) {
+ xmlNotationPtr notaDecl;
+ if ((doc == NULL) || (doc->intSubset == NULL)) return(-1);
+
+ notaDecl = xmlGetDtdNotationDesc(doc->intSubset, notationName);
+ if ((notaDecl == NULL) && (doc->extSubset != NULL))
+ notaDecl = xmlGetDtdNotationDesc(doc->extSubset, notationName);
+
+ if ((notaDecl == NULL) && (ctxt != NULL)) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc, XML_DTD_UNKNOWN_NOTATION,
+ EMBED_ERRTXT("NOTATION %s is not declared\n"),
+ notationName, NULL, NULL);
+ return(0);
+ }
+ return(1);
+}
+#endif /* LIBXML_VALID_ENABLED or LIBXML_SCHEMAS_ENABLED */
+
+/**
+ * xmlIsMixedElement:
+ * @param doc the document
+ * @param name the element name
+ *
+ * Search in the DtDs whether an element accept Mixed content (or ANY)
+ * basically if it is supposed to accept text childs
+ *
+ * returns 0 if no, 1 if yes, and -1 if no element description is available
+ */
+
+XMLPUBFUNEXPORT int
+xmlIsMixedElement(xmlDocPtr doc, const xmlChar *name) {
+ xmlElementPtr elemDecl;
+
+ if ((doc == NULL) || (doc->intSubset == NULL)) return(-1);
+
+ elemDecl = xmlGetDtdElementDesc(doc->intSubset, name);
+ if ((elemDecl == NULL) && (doc->extSubset != NULL))
+ elemDecl = xmlGetDtdElementDesc(doc->extSubset, name);
+ if (elemDecl == NULL) return(-1);
+ switch (elemDecl->etype) {
+ case XML_ELEMENT_TYPE_UNDEFINED:
+ return(-1);
+ case XML_ELEMENT_TYPE_ELEMENT:
+ return(0);
+ case XML_ELEMENT_TYPE_EMPTY:
+ /*
+ * return 1 for EMPTY since we want VC error to pop up
+ * on <empty> </empty> for example
+ */
+ case XML_ELEMENT_TYPE_ANY:
+ case XML_ELEMENT_TYPE_MIXED:
+ return(1);
+ }
+ return(1);
+}
+
+#ifdef LIBXML_VALID_ENABLED
+/**
+ * xmlValidateNameValue:
+ * @param value an Name value
+ *
+ * Validate that the given value match Name production
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateNameValue(const xmlChar *value) {
+ const xmlChar *cur;
+ int val, len;
+
+ if (value == NULL) return(0);
+ cur = value;
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ if (!IS_LETTER(val) && (val != '_') &&
+ (val != ':')) {
+ return(0);
+ }
+
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ if (val != 0) return(0);
+
+ return(1);
+}
+
+/**
+ * xmlValidateNamesValue:
+ * @param value an Names value
+ *
+ * Validate that the given value match Names production
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateNamesValue(const xmlChar *value) {
+ const xmlChar *cur;
+ int val, len;
+
+ if (value == NULL) return(0);
+ cur = value;
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+
+ if (!IS_LETTER(val) && (val != '_') &&
+ (val != ':')) {
+ return(0);
+ }
+
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ while (IS_BLANK(val)) {
+ while (IS_BLANK(val)) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ if (!IS_LETTER(val) && (val != '_') &&
+ (val != ':')) {
+ return(0);
+ }
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+ }
+
+ if (val != 0) return(0);
+
+ return(1);
+}
+
+/**
+ * xmlValidateNmtokenValue:
+ * @param value an Nmtoken value
+ *
+ * Validate that the given value match Nmtoken production
+ *
+ * [ VC: Name Token ]
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateNmtokenValue(const xmlChar *value) {
+ const xmlChar *cur;
+ int val, len;
+
+ if (value == NULL) return(0);
+ cur = value;
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+
+ if (!IS_LETTER(val) && !IS_DIGIT(val) &&
+ (val != '.') && (val != '-') &&
+ (val != '_') && (val != ':') &&
+ (!IS_COMBINING(val)) &&
+ (!IS_EXTENDER(val)))
+ return(0);
+
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ if (val != 0) return(0);
+
+ return(1);
+}
+
+/**
+ * xmlValidateNmtokensValue:
+ * @param value an Nmtokens value
+ *
+ * Validate that the given value match Nmtokens production
+ *
+ * [ VC: Name Token ]
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateNmtokensValue(const xmlChar *value) {
+ const xmlChar *cur;
+ int val, len;
+
+ if (value == NULL) return(0);
+ cur = value;
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+
+ while (IS_BLANK(val)) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ if (!IS_LETTER(val) && !IS_DIGIT(val) &&
+ (val != '.') && (val != '-') &&
+ (val != '_') && (val != ':') &&
+ (!IS_COMBINING(val)) &&
+ (!IS_EXTENDER(val)))
+ return(0);
+
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+
+ while (IS_BLANK(val)) {
+ while (IS_BLANK(val)) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+ if (val == 0) return(1);
+
+ if (!IS_LETTER(val) && !IS_DIGIT(val) &&
+ (val != '.') && (val != '-') &&
+ (val != '_') && (val != ':') &&
+ (!IS_COMBINING(val)) &&
+ (!IS_EXTENDER(val)))
+ return(0);
+
+ while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+ (val == '.') || (val == '-') ||
+ (val == '_') || (val == ':') ||
+ (IS_COMBINING(val)) ||
+ (IS_EXTENDER(val))) {
+ val = xmlStringCurrentChar(NULL, cur, &len);
+ cur += len;
+ }
+ }
+
+ if (val != 0) return(0);
+
+ return(1);
+}
+
+/**
+ * xmlValidateNotationDecl:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param nota a notation definition
+ *
+ * Try to validate a single notation definition
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - it seems that no validity constraint exists on notation declarations
+ * But this function get called anyway ...
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateNotationDecl(xmlValidCtxtPtr ctxt ATTRIBUTE_UNUSED, xmlDocPtr doc ATTRIBUTE_UNUSED,
+ xmlNotationPtr nota ATTRIBUTE_UNUSED) {
+ int ret = 1;
+
+ return(ret);
+}
+
+/**
+ * xmlValidateAttributeValue:
+ * @param type an attribute type
+ * @param value an attribute value
+ *
+ * Validate that the given attribute value match the proper production
+ *
+ * [ VC: ID ]
+ * Values of type ID must match the Name production....
+ *
+ * [ VC: IDREF ]
+ * Values of type IDREF must match the Name production, and values
+ * of type IDREFS must match Names ...
+ *
+ * [ VC: Entity Name ]
+ * Values of type ENTITY must match the Name production, values
+ * of type ENTITIES must match Names ...
+ *
+ * [ VC: Name Token ]
+ * Values of type NMTOKEN must match the Nmtoken production; values
+ * of type NMTOKENS must match Nmtokens.
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateAttributeValue(xmlAttributeType type, const xmlChar *value) {
+ switch (type) {
+ case XML_ATTRIBUTE_ENTITIES:
+ case XML_ATTRIBUTE_IDREFS:
+ return(xmlValidateNamesValue(value));
+ case XML_ATTRIBUTE_ENTITY:
+ case XML_ATTRIBUTE_IDREF:
+ case XML_ATTRIBUTE_ID:
+ case XML_ATTRIBUTE_NOTATION:
+ return(xmlValidateNameValue(value));
+ case XML_ATTRIBUTE_NMTOKENS:
+ case XML_ATTRIBUTE_ENUMERATION:
+ return(xmlValidateNmtokensValue(value));
+ case XML_ATTRIBUTE_NMTOKEN:
+ return(xmlValidateNmtokenValue(value));
+ case XML_ATTRIBUTE_CDATA:
+ break;
+ }
+ return(1);
+}
+
+/**
+ * xmlValidateAttributeValue2:
+ * @param ctxt the validation context
+ * @param doc the document
+ * @param name the attribute name (used for error reporting only)
+ * @param type the attribute type
+ * @param value the attribute value
+ *
+ * Validate that the given attribute value match a given type.
+ * This typically cannot be done before having finished parsing
+ * the subsets.
+ *
+ * [ VC: IDREF ]
+ * Values of type IDREF must match one of the declared IDs
+ * Values of type IDREFS must match a sequence of the declared IDs
+ * each Name must match the value of an ID attribute on some element
+ * in the XML document; i.e. IDREF values must match the value of
+ * some ID attribute
+ *
+ * [ VC: Entity Name ]
+ * Values of type ENTITY must match one declared entity
+ * Values of type ENTITIES must match a sequence of declared entities
+ *
+ * [ VC: Notation Attributes ]
+ * all notation names in the declaration must be declared.
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+static int
+xmlValidateAttributeValue2(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ const xmlChar *name, xmlAttributeType type, const xmlChar *value) {
+ int ret = 1;
+ switch (type) {
+ case XML_ATTRIBUTE_IDREFS:
+ case XML_ATTRIBUTE_IDREF:
+ case XML_ATTRIBUTE_ID:
+ case XML_ATTRIBUTE_NMTOKENS:
+ case XML_ATTRIBUTE_ENUMERATION:
+ case XML_ATTRIBUTE_NMTOKEN:
+ case XML_ATTRIBUTE_CDATA:
+ break;
+ case XML_ATTRIBUTE_ENTITY: {
+ xmlEntityPtr ent;
+
+ ent = xmlGetDocEntity(doc, value);
+ /* yeah it's a bit messy... */
+ if ((ent == NULL) && (doc->standalone == 1)) {
+ doc->standalone = 0;
+ ent = xmlGetDocEntity(doc, value);
+ }
+ if (ent == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc,
+ XML_DTD_UNKNOWN_ENTITY,
+ EMBED_ERRTXT("ENTITY attribute %s reference an unknown entity \"%s\"\n"),
+ name, value, NULL);
+ ret = 0;
+ } else if (ent->etype != XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc,
+ XML_DTD_ENTITY_TYPE,
+ EMBED_ERRTXT("ENTITY attribute %s reference an entity \"%s\" of wrong type\n"),
+ name, value, NULL);
+ ret = 0;
+ }
+ break;
+ }
+ case XML_ATTRIBUTE_ENTITIES: {
+ xmlChar *dup, *nam = NULL, *cur, save;
+ xmlEntityPtr ent;
+
+ dup = xmlStrdup(value);
+ if (dup == NULL)
+ return(0);
+ cur = dup;
+ while (*cur != 0) {
+ nam = cur;
+ while ((*cur != 0) && (!IS_BLANK_CH(*cur))) cur++;
+ save = *cur;
+ *cur = 0;
+ ent = xmlGetDocEntity(doc, nam);
+ if (ent == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc,
+ XML_DTD_UNKNOWN_ENTITY,
+ EMBED_ERRTXT("ENTITIES attribute %s reference an unknown entity \"%s\"\n"),
+ name, nam, NULL);
+ ret = 0;
+ } else if (ent->etype != XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc,
+ XML_DTD_ENTITY_TYPE,
+ EMBED_ERRTXT("ENTITIES attribute %s reference an entity \"%s\" of wrong type\n"),
+ name, nam, NULL);
+ ret = 0;
+ }
+ if (save == 0)
+ break;
+ *cur = save;
+ while (IS_BLANK_CH(*cur)) cur++;
+ }
+ xmlFree(dup);
+ break;
+ }
+ case XML_ATTRIBUTE_NOTATION: {
+ xmlNotationPtr nota;
+
+ nota = xmlGetDtdNotationDesc(doc->intSubset, value);
+ if ((nota == NULL) && (doc->extSubset != NULL))
+ nota = xmlGetDtdNotationDesc(doc->extSubset, value);
+
+ if (nota == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) doc,
+ XML_DTD_UNKNOWN_NOTATION,
+ EMBED_ERRTXT("NOTATION attribute %s reference an unknown notation \"%s\"\n"),
+ name, value, NULL);
+ ret = 0;
+ }
+ break;
+ }
+ }
+ return(ret);
+}
+
+/**
+ * xmlValidCtxtNormalizeAttributeValue:
+ * @param ctxt the validation context
+ * @param doc the document
+ * @param elem the parent
+ * @param name the attribute name
+ * @param value the attribute value
+ * @param ctxt the validation context or NULL
+ *
+ * Does the validation related extra step of the normalization of attribute
+ * values:
+ *
+ * If the declared value is not CDATA, then the XML processor must further
+ * process the normalized attribute value by discarding any leading and
+ * trailing space (#x20) characters, and by replacing sequences of space
+ * (#x20) characters by single space (#x20) character.
+ *
+ * Also check VC: Standalone Document Declaration in P32, and update
+ * ctxt->valid accordingly
+ *
+ * returns a new normalized string if normalization is needed, NULL otherwise
+ * the caller must free the returned value.
+ */
+
+xmlChar *
+xmlValidCtxtNormalizeAttributeValue(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem, const xmlChar *name, const xmlChar *value) {
+ xmlChar *ret, *dst;
+ const xmlChar *src;
+ xmlAttributePtr attrDecl = NULL;
+ int extsubset = 0;
+
+ if (doc == NULL) return(NULL);
+ if (elem == NULL) return(NULL);
+ if (name == NULL) return(NULL);
+ if (value == NULL) return(NULL);
+
+ if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(elem->name, elem->ns->prefix, fn, 50);
+ if (fullname == NULL)
+ return(0);
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, fullname, name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL)) {
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset, fullname, name);
+ if (attrDecl != NULL)
+ extsubset = 1;
+ }
+ if ((fullname != fn) && (fullname != elem->name))
+ xmlFree(fullname);
+ }
+ if ((attrDecl == NULL) && (doc->intSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL)) {
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset, elem->name, name);
+ if (attrDecl != NULL)
+ extsubset = 1;
+ }
+
+ if (attrDecl == NULL)
+ return(NULL);
+ if (attrDecl->atype == XML_ATTRIBUTE_CDATA)
+ return(NULL);
+
+ ret = xmlStrdup(value);
+ if (ret == NULL)
+ return(NULL);
+ src = value;
+ dst = ret;
+ while (*src == 0x20) src++;
+ while (*src != 0) {
+ if (*src == 0x20) {
+ while (*src == 0x20) src++;
+ if (*src != 0)
+ *dst++ = 0x20;
+ } else {
+ *dst++ = *src++;
+ }
+ }
+ *dst = 0;
+ if ((doc->standalone) && (extsubset == 1) && (!xmlStrEqual(value, ret))) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOT_STANDALONE,
+EMBED_ERRTXT("standalone: %s on %s value had to be normalized based on external subset declaration\n"),
+ name, elem->name, NULL);
+ ctxt->valid = 0;
+ }
+ return(ret);
+}
+
+/**
+ * xmlValidNormalizeAttributeValue:
+ * @param doc the document
+ * @param elem the parent
+ * @param name the attribute name
+ * @param value the attribute value
+ *
+ * Does the validation related extra step of the normalization of attribute
+ * values:
+ *
+ * If the declared value is not CDATA, then the XML processor must further
+ * process the normalized attribute value by discarding any leading and
+ * trailing space (#x20) characters, and by replacing sequences of space
+ * (#x20) characters by single space (#x20) character.
+ *
+ * Returns a new normalized string if normalization is needed, NULL otherwise
+ * the caller must free the returned value.
+ */
+
+xmlChar *
+xmlValidNormalizeAttributeValue(xmlDocPtr doc, xmlNodePtr elem,
+ const xmlChar *name, const xmlChar *value) {
+ xmlChar *ret, *dst;
+ const xmlChar *src;
+ xmlAttributePtr attrDecl = NULL;
+
+ if (doc == NULL) return(NULL);
+ if (elem == NULL) return(NULL);
+ if (name == NULL) return(NULL);
+ if (value == NULL) return(NULL);
+
+ if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(elem->name, elem->ns->prefix, fn, 50);
+ if (fullname == NULL)
+ return(0);
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, fullname, name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset, fullname, name);
+ if ((fullname != fn) && (fullname != elem->name))
+ xmlFree(fullname);
+ }
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset, elem->name, name);
+
+ if (attrDecl == NULL)
+ return(NULL);
+ if (attrDecl->atype == XML_ATTRIBUTE_CDATA)
+ return(NULL);
+
+ ret = xmlStrdup(value);
+ if (ret == NULL)
+ return(NULL);
+ src = value;
+ dst = ret;
+ while (*src == 0x20) src++;
+ while (*src != 0) {
+ if (*src == 0x20) {
+ while (*src == 0x20) src++;
+ if (*src != 0)
+ *dst++ = 0x20;
+ } else {
+ *dst++ = *src++;
+ }
+ }
+ *dst = 0;
+ return(ret);
+}
+
+static void
+xmlValidateAttributeIdCallback(xmlAttributePtr attr, int *count,
+ const xmlChar* name ATTRIBUTE_UNUSED) {
+ if (attr->atype == XML_ATTRIBUTE_ID) (*count)++;
+}
+
+/**
+ * xmlValidateAttributeDecl:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param attr an attribute definition
+ *
+ * Try to validate a single attribute definition
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: Attribute Default Legal ]
+ * - [ VC: Enumeration ]
+ * - [ VC: ID Attribute Default ]
+ *
+ * The ID/IDREF uniqueness and matching are done separately
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateAttributeDecl(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlAttributePtr attr) {
+ int ret = 1;
+ int val;
+ CHECK_DTD;
+ if(attr == NULL) return(1);
+
+ /* Attribute Default Legal */
+ /* Enumeration */
+ if (attr->defaultValue != NULL) {
+ val = xmlValidateAttributeValue(attr->atype, attr->defaultValue);
+ if (val == 0) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) attr, XML_DTD_ATTRIBUTE_DEFAULT,
+ EMBED_ERRTXT("Syntax of default value for attribute %s of %s is not valid\n"),
+ attr->name, attr->elem, NULL);
+ }
+ ret &= val;
+ }
+
+ /* ID Attribute Default */
+ if ((attr->atype == XML_ATTRIBUTE_ID)&&
+ (attr->def != XML_ATTRIBUTE_IMPLIED) &&
+ (attr->def != XML_ATTRIBUTE_REQUIRED)) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) attr, XML_DTD_ID_FIXED,
+ EMBED_ERRTXT("ID attribute %s of %s is not valid must be #IMPLIED or #REQUIRED\n"),
+ attr->name, attr->elem, NULL);
+ ret = 0;
+ }
+
+ /* One ID per Element Type */
+ if (attr->atype == XML_ATTRIBUTE_ID) {
+ int nbId;
+
+ /* the trick is that we parse DtD as their own internal subset */
+ xmlElementPtr elem = xmlGetDtdElementDesc(doc->intSubset,
+ attr->elem);
+ if (elem != NULL) {
+ nbId = xmlScanIDAttributeDecl(NULL, elem);
+ } else {
+ xmlAttributeTablePtr table;
+
+ /*
+ * The attribute may be declared in the internal subset and the
+ * element in the external subset.
+ */
+ nbId = 0;
+ table = (xmlAttributeTablePtr) doc->intSubset->attributes;
+ xmlHashScan3(table, NULL, NULL, attr->elem, (xmlHashScanner)
+ xmlValidateAttributeIdCallback, &nbId);
+ }
+ if (nbId > 1) {
+
+ xmlErrValidNodeNr(ctxt, (xmlNodePtr) attr, XML_DTD_ID_SUBSET,
+ EMBED_ERRTXT("Element %s has %d ID attribute defined in the internal subset : %s\n"),
+ attr->elem, nbId, attr->name);
+ } else if (doc->extSubset != NULL) {
+ int extId = 0;
+ elem = xmlGetDtdElementDesc(doc->extSubset, attr->elem);
+ if (elem != NULL) {
+ extId = xmlScanIDAttributeDecl(NULL, elem);
+ }
+ if (extId > 1) {
+ xmlErrValidNodeNr(ctxt, (xmlNodePtr) attr, XML_DTD_ID_SUBSET,
+ EMBED_ERRTXT("Element %s has %d ID attribute defined in the external subset : %s\n"),
+ attr->elem, extId, attr->name);
+ } else if (extId + nbId > 1) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) attr, XML_DTD_ID_SUBSET,
+EMBED_ERRTXT("Element %s has ID attributes defined in the internal and external subset : %s\n"),
+ attr->elem, attr->name, NULL);
+ }
+ }
+ }
+
+ /* Validity Constraint: Enumeration */
+ if ((attr->defaultValue != NULL) && (attr->tree != NULL)) {
+ xmlEnumerationPtr tree = attr->tree;
+ while (tree != NULL) {
+ if (xmlStrEqual(tree->name, attr->defaultValue)) break;
+ tree = tree->next;
+ }
+ if (tree == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) attr, XML_DTD_ATTRIBUTE_VALUE,
+EMBED_ERRTXT("Default value \"%s\" for attribute %s of %s is not among the enumerated set\n"),
+ attr->defaultValue, attr->name, attr->elem);
+ ret = 0;
+ }
+ }
+
+ return(ret);
+}
+
+/**
+ * xmlValidateElementDecl:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element definition
+ *
+ * Try to validate a single element definition
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: One ID per Element Type ]
+ * - [ VC: No Duplicate Types ]
+ * - [ VC: Unique Element Type Declaration ]
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateElementDecl(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlElementPtr elem) {
+ int ret = 1;
+ xmlElementPtr tst;
+
+ CHECK_DTD;
+
+ if (elem == NULL) return(1);
+
+#if 0
+#ifdef LIBXML_REGEXP_ENABLED
+ /* Build the regexp associated to the content model */
+ ret = xmlValidBuildContentModel(ctxt, elem);
+#endif
+#endif
+
+ /* No Duplicate Types */
+ if (elem->etype == XML_ELEMENT_TYPE_MIXED) {
+ xmlElementContentPtr cur, next;
+ const xmlChar *name;
+
+ cur = elem->content;
+ while (cur != NULL) {
+ if (cur->type != XML_ELEMENT_CONTENT_OR) break;
+ if (cur->c1 == NULL) break;
+ if (cur->c1->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ name = cur->c1->name;
+ next = cur->c2;
+ while (next != NULL) {
+ if (next->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if ((xmlStrEqual(next->name, name)) &&
+ (xmlStrEqual(next->prefix, cur->prefix))) {
+ if (cur->prefix == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_CONTENT_ERROR,
+ EMBED_ERRTXT("Definition of %s has duplicate references of %s\n"),
+ elem->name, name, NULL);
+ } else {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_CONTENT_ERROR,
+ EMBED_ERRTXT("Definition of %s has duplicate references of %s:%s\n"),
+ elem->name, cur->prefix, name);
+ }
+ ret = 0;
+ }
+ break;
+ }
+ if (next->c1 == NULL) break;
+ if (next->c1->type != XML_ELEMENT_CONTENT_ELEMENT) break;
+ if ((xmlStrEqual(next->c1->name, name)) &&
+ (xmlStrEqual(next->c1->prefix, cur->prefix))) {
+ if (cur->prefix == NULL) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_CONTENT_ERROR,
+ EMBED_ERRTXT("Definition of %s has duplicate references to %s\n"),
+ elem->name, name, NULL);
+ } else {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_CONTENT_ERROR,
+ EMBED_ERRTXT("Definition of %s has duplicate references to %s:%s\n"),
+ elem->name, cur->prefix, name);
+ }
+ ret = 0;
+ }
+ next = next->c2;
+ }
+ }
+ cur = cur->c2;
+ }
+ }
+
+ /* VC: Unique Element Type Declaration */
+ tst = xmlGetDtdElementDesc(doc->intSubset, elem->name);
+ if ((tst != NULL ) && (tst != elem) &&
+ ((tst->prefix == elem->prefix) ||
+ (xmlStrEqual(tst->prefix, elem->prefix))) &&
+ (tst->etype != XML_ELEMENT_TYPE_UNDEFINED)) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_ELEM_REDEFINED,
+ EMBED_ERRTXT("Redefinition of element %s\n"),
+ elem->name, NULL, NULL);
+ ret = 0;
+ }
+ tst = xmlGetDtdElementDesc(doc->extSubset, elem->name);
+ if ((tst != NULL ) && (tst != elem) &&
+ ((tst->prefix == elem->prefix) ||
+ (xmlStrEqual(tst->prefix, elem->prefix))) &&
+ (tst->etype != XML_ELEMENT_TYPE_UNDEFINED)) {
+ xmlErrValidNode(ctxt, (xmlNodePtr) elem, XML_DTD_ELEM_REDEFINED,
+ EMBED_ERRTXT("Redefinition of element %s\n"),
+ elem->name, NULL, NULL);
+ ret = 0;
+ }
+ /* One ID per Element Type
+ * already done when registering the attribute
+ if (xmlScanIDAttributeDecl(ctxt, elem) > 1) {
+ ret = 0;
+ } */
+ return(ret);
+}
+
+/**
+ * xmlValidateOneAttribute:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ * @param attr an attribute instance
+ * @param value the attribute value (without entities processing)
+ *
+ * Try to validate a single attribute for an element
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: Attribute Value Type ]
+ * - [ VC: Fixed Attribute Default ]
+ * - [ VC: Entity Name ]
+ * - [ VC: Name Token ]
+ * - [ VC: ID ]
+ * - [ VC: IDREF ]
+ * - [ VC: Entity Name ]
+ * - [ VC: Notation Attributes ]
+ *
+ * The ID/IDREF uniqueness and matching are done separately
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateOneAttribute(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem, xmlAttrPtr attr, const xmlChar *value)
+{
+ xmlAttributePtr attrDecl = NULL;
+ int val;
+ int ret = 1;
+
+ CHECK_DTD;
+ if ((elem == NULL) || (elem->name == NULL)) return(0);
+ if ((attr == NULL) || (attr->name == NULL)) return(0);
+
+ if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(elem->name, elem->ns->prefix, fn, 50);
+ if (fullname == NULL)
+ return(0);
+ if (attr->ns != NULL) {
+ attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, fullname,
+ attr->name, attr->ns->prefix);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, fullname,
+ attr->name, attr->ns->prefix);
+ } else {
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, fullname, attr->name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset,
+ fullname, attr->name);
+ }
+ if ((fullname != fn) && (fullname != elem->name))
+ xmlFree(fullname);
+ }
+ if (attrDecl == NULL) {
+ if (attr->ns != NULL) {
+ attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, elem->name,
+ attr->name, attr->ns->prefix);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elem->name,
+ attr->name, attr->ns->prefix);
+ } else {
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset,
+ elem->name, attr->name);
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset,
+ elem->name, attr->name);
+ }
+ }
+
+
+ /* Validity Constraint: Attribute Value Type */
+ if (attrDecl == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_ATTRIBUTE,
+ EMBED_ERRTXT("No declaration for attribute %s of element %s\n"),
+ attr->name, elem->name, NULL);
+ return(0);
+ }
+ attr->atype = attrDecl->atype;
+
+ val = xmlValidateAttributeValue(attrDecl->atype, value);
+ if (val == 0) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_VALUE,
+ EMBED_ERRTXT("Syntax of value for attribute %s of %s is not valid\n"),
+ attr->name, elem->name, NULL);
+ ret = 0;
+ }
+
+ /* Validity constraint: Fixed Attribute Default */
+ if (attrDecl->def == XML_ATTRIBUTE_FIXED) {
+ if (!xmlStrEqual(value, attrDecl->defaultValue)) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_DEFAULT,
+ EMBED_ERRTXT("Value for attribute %s of %s is different from default \"%s\"\n"),
+ attr->name, elem->name, attrDecl->defaultValue);
+ ret = 0;
+ }
+ }
+
+ /* Validity Constraint: ID uniqueness */
+ if (attrDecl->atype == XML_ATTRIBUTE_ID) {
+ if (xmlAddID(ctxt, doc, value, attr) == NULL)
+ ret = 0;
+ }
+
+ if ((attrDecl->atype == XML_ATTRIBUTE_IDREF) ||
+ (attrDecl->atype == XML_ATTRIBUTE_IDREFS)) {
+ if (xmlAddRef(ctxt, doc, value, attr) == NULL)
+ ret = 0;
+ }
+
+ /* Validity Constraint: Notation Attributes */
+ if (attrDecl->atype == XML_ATTRIBUTE_NOTATION) {
+ xmlEnumerationPtr tree = attrDecl->tree;
+ xmlNotationPtr nota;
+
+ /* First check that the given NOTATION was declared */
+ nota = xmlGetDtdNotationDesc(doc->intSubset, value);
+ if (nota == NULL)
+ nota = xmlGetDtdNotationDesc(doc->extSubset, value);
+
+ if (nota == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_NOTATION,
+ EMBED_ERRTXT("Value \"%s\" for attribute %s of %s is not a declared Notation\n"),
+ value, attr->name, elem->name);
+ ret = 0;
+ }
+
+ /* Second, verify that it's among the list */
+ while (tree != NULL) {
+ if (xmlStrEqual(tree->name, value)) break;
+ tree = tree->next;
+ }
+ if (tree == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOTATION_VALUE,
+EMBED_ERRTXT("Value \"%s\" for attribute %s of %s is not among the enumerated notations\n"),
+ value, attr->name, elem->name);
+ ret = 0;
+ }
+ }
+
+ /* Validity Constraint: Enumeration */
+ if (attrDecl->atype == XML_ATTRIBUTE_ENUMERATION) {
+ xmlEnumerationPtr tree = attrDecl->tree;
+ while (tree != NULL) {
+ if (xmlStrEqual(tree->name, value)) break;
+ tree = tree->next;
+ }
+ if (tree == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_VALUE,
+ EMBED_ERRTXT("Value \"%s\" for attribute %s of %s is not among the enumerated set\n"),
+ value, attr->name, elem->name);
+ ret = 0;
+ }
+ }
+
+ /* Fixed Attribute Default */
+ if ((attrDecl->def == XML_ATTRIBUTE_FIXED) &&
+ (!xmlStrEqual(attrDecl->defaultValue, value))) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_VALUE,
+ EMBED_ERRTXT("Value for attribute %s of %s must be \"%s\"\n"),
+ attr->name, elem->name, attrDecl->defaultValue);
+ ret = 0;
+ }
+
+ /* Extra check for the attribute value */
+ ret &= xmlValidateAttributeValue2(ctxt, doc, attr->name,
+ attrDecl->atype, value);
+
+ return(ret);
+}
+
+/**
+ * xmlValidateOneNamespace:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ * @param prefix the namespace prefix
+ * @param ns an namespace declaration instance
+ * @param value the attribute value (without entities processing)
+ *
+ * Try to validate a single namespace declaration for an element
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: Attribute Value Type ]
+ * - [ VC: Fixed Attribute Default ]
+ * - [ VC: Entity Name ]
+ * - [ VC: Name Token ]
+ * - [ VC: ID ]
+ * - [ VC: IDREF ]
+ * - [ VC: Entity Name ]
+ * - [ VC: Notation Attributes ]
+ *
+ * The ID/IDREF uniqueness and matching are done separately
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateOneNamespace(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+xmlNodePtr elem, const xmlChar *prefix, xmlNsPtr ns, const xmlChar *value) {
+ /* xmlElementPtr elemDecl; */
+ xmlAttributePtr attrDecl = NULL;
+ int val;
+ int ret = 1;
+
+ CHECK_DTD;
+ if ((elem == NULL) || (elem->name == NULL)) return(0);
+ if ((ns == NULL) || (ns->href == NULL)) return(0);
+
+ if (prefix != NULL) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(elem->name, prefix, fn, 50);
+ if (fullname == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("Validating namespace"));
+ return(0);
+ }
+ if (ns->prefix != NULL) {
+ attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, fullname,
+ ns->prefix, BAD_CAST "xmlns");
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, fullname,
+ ns->prefix, BAD_CAST "xmlns");
+ } else {
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset, fullname,
+ BAD_CAST "xmlns");
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset, fullname,
+ BAD_CAST "xmlns");
+ }
+ if ((fullname != fn) && (fullname != elem->name))
+ xmlFree(fullname);
+ }
+ if (attrDecl == NULL) {
+ if (ns->prefix != NULL) {
+ attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, elem->name,
+ ns->prefix, BAD_CAST "xmlns");
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elem->name,
+ ns->prefix, BAD_CAST "xmlns");
+ } else {
+ attrDecl = xmlGetDtdAttrDesc(doc->intSubset,
+ elem->name, BAD_CAST "xmlns");
+ if ((attrDecl == NULL) && (doc->extSubset != NULL))
+ attrDecl = xmlGetDtdAttrDesc(doc->extSubset,
+ elem->name, BAD_CAST "xmlns");
+ }
+ }
+
+
+ /* Validity Constraint: Attribute Value Type */
+ if (attrDecl == NULL) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_ATTRIBUTE,
+ EMBED_ERRTXT("No declaration for attribute xmlns:%s of element %s\n"),
+ ns->prefix, elem->name, NULL);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_ATTRIBUTE,
+ EMBED_ERRTXT("No declaration for attribute xmlns of element %s\n"),
+ elem->name, NULL, NULL);
+ }
+ return(0);
+ }
+
+ val = xmlValidateAttributeValue(attrDecl->atype, value);
+ if (val == 0) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_INVALID_DEFAULT,
+ EMBED_ERRTXT("Syntax of value for attribute xmlns:%s of %s is not valid\n"),
+ ns->prefix, elem->name, NULL);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_INVALID_DEFAULT,
+ EMBED_ERRTXT("Syntax of value for attribute xmlns of %s is not valid\n"),
+ elem->name, NULL, NULL);
+ }
+ ret = 0;
+ }
+
+ /* Validity constraint: Fixed Attribute Default */
+ if (attrDecl->def == XML_ATTRIBUTE_FIXED) {
+ if (!xmlStrEqual(value, attrDecl->defaultValue)) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_DEFAULT,
+ EMBED_ERRTXT("Value for attribute xmlns:%s of %s is different from default \"%s\"\n"),
+ ns->prefix, elem->name, attrDecl->defaultValue);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_DEFAULT,
+ EMBED_ERRTXT("Value for attribute xmlns of %s is different from default \"%s\"\n"),
+ elem->name, attrDecl->defaultValue, NULL);
+ }
+ ret = 0;
+ }
+ }
+
+ /* Validity Constraint: ID uniqueness */
+ if (attrDecl->atype == XML_ATTRIBUTE_ID) {
+ if (xmlAddID(ctxt, doc, value, (xmlAttrPtr) ns) == NULL)
+ ret = 0;
+ }
+
+ if ((attrDecl->atype == XML_ATTRIBUTE_IDREF) ||
+ (attrDecl->atype == XML_ATTRIBUTE_IDREFS)) {
+ if (xmlAddRef(ctxt, doc, value, (xmlAttrPtr) ns) == NULL)
+ ret = 0;
+ }
+
+ /* Validity Constraint: Notation Attributes */
+ if (attrDecl->atype == XML_ATTRIBUTE_NOTATION) {
+ xmlEnumerationPtr tree = attrDecl->tree;
+ xmlNotationPtr nota;
+
+ /* First check that the given NOTATION was declared */
+ nota = xmlGetDtdNotationDesc(doc->intSubset, value);
+ if (nota == NULL)
+ nota = xmlGetDtdNotationDesc(doc->extSubset, value);
+
+ if (nota == NULL) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_NOTATION,
+ EMBED_ERRTXT("Value \"%s\" for attribute xmlns:%s of %s is not a declared Notation\n"),
+ value, ns->prefix, elem->name);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_NOTATION,
+ EMBED_ERRTXT("Value \"%s\" for attribute xmlns of %s is not a declared Notation\n"),
+ value, elem->name, NULL);
+ }
+ ret = 0;
+ }
+
+ /* Second, verify that it's among the list */
+ while (tree != NULL) {
+ if (xmlStrEqual(tree->name, value)) break;
+ tree = tree->next;
+ }
+ if (tree == NULL) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOTATION_VALUE,
+EMBED_ERRTXT("Value \"%s\" for attribute xmlns:%s of %s is not among the enumerated notations\n"),
+ value, ns->prefix, elem->name);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOTATION_VALUE,
+EMBED_ERRTXT("Value \"%s\" for attribute xmlns of %s is not among the enumerated notations\n"),
+ value, elem->name, NULL);
+ }
+ ret = 0;
+ }
+ }
+
+ /* Validity Constraint: Enumeration */
+ if (attrDecl->atype == XML_ATTRIBUTE_ENUMERATION) {
+ xmlEnumerationPtr tree = attrDecl->tree;
+ while (tree != NULL) {
+ if (xmlStrEqual(tree->name, value)) break;
+ tree = tree->next;
+ }
+ if (tree == NULL) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_VALUE,
+EMBED_ERRTXT("Value \"%s\" for attribute xmlns:%s of %s is not among the enumerated set\n"),
+ value, ns->prefix, elem->name);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ATTRIBUTE_VALUE,
+EMBED_ERRTXT("Value \"%s\" for attribute xmlns of %s is not among the enumerated set\n"),
+ value, elem->name, NULL);
+ }
+ ret = 0;
+ }
+ }
+
+ /* Fixed Attribute Default */
+ if ((attrDecl->def == XML_ATTRIBUTE_FIXED) &&
+ (!xmlStrEqual(attrDecl->defaultValue, value))) {
+ if (ns->prefix != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ELEM_NAMESPACE,
+ EMBED_ERRTXT("Value for attribute xmlns:%s of %s must be \"%s\"\n"),
+ ns->prefix, elem->name, attrDecl->defaultValue);
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ELEM_NAMESPACE,
+ EMBED_ERRTXT("Value for attribute xmlns of %s must be \"%s\"\n"),
+ elem->name, attrDecl->defaultValue, NULL);
+ }
+ ret = 0;
+ }
+
+ /* Extra check for the attribute value */
+ if (ns->prefix != NULL) {
+ ret &= xmlValidateAttributeValue2(ctxt, doc, ns->prefix,
+ attrDecl->atype, value);
+ } else {
+ ret &= xmlValidateAttributeValue2(ctxt, doc, BAD_CAST "xmlns",
+ attrDecl->atype, value);
+ }
+
+ return(ret);
+}
+
+#ifndef LIBXML_REGEXP_ENABLED
+/**
+ * xmlValidateSkipIgnorable:
+ * @param ctxt the validation context
+ * @param child the child list
+ *
+ * Skip ignorable elements w.r.t. the validation process
+ *
+ * returns the first element to consider for validation of the content model
+ */
+
+static xmlNodePtr
+xmlValidateSkipIgnorable(xmlNodePtr child) {
+ while (child != NULL) {
+ switch (child->type) {
+ /* These things are ignored (skipped) during validation. */
+ case XML_PI_NODE:
+ case XML_COMMENT_NODE:
+ case XML_XINCLUDE_START:
+ case XML_XINCLUDE_END:
+ child = child->next;
+ break;
+ case XML_TEXT_NODE:
+ if (xmlIsBlankNode(child))
+ child = child->next;
+ else
+ return(child);
+ break;
+ /* keep current node */
+ default:
+ return(child);
+ }
+ }
+ return(child);
+}
+
+/**
+ * xmlValidateElementType:
+ * @param ctxt the validation context
+ *
+ * Try to validate the content model of an element internal function
+ *
+ * returns 1 if valid or 0 ,-1 in case of error, -2 if an entity
+ * reference is found and -3 if the validation succeeded but
+ * the content model is not determinist.
+ */
+
+static int
+xmlValidateElementType(xmlValidCtxtPtr ctxt) {
+ int ret = -1;
+ int determinist = 1;
+
+ NODE = xmlValidateSkipIgnorable(NODE);
+ if ((NODE == NULL) && (CONT == NULL))
+ return(1);
+ if ((NODE == NULL) &&
+ ((CONT->ocur == XML_ELEMENT_CONTENT_MULT) ||
+ (CONT->ocur == XML_ELEMENT_CONTENT_OPT))) {
+ return(1);
+ }
+ if (CONT == NULL) return(-1);
+ if ((NODE != NULL) && (NODE->type == XML_ENTITY_REF_NODE))
+ return(-2);
+
+ /*
+ * We arrive here when more states need to be examined
+ */
+cont:
+
+ /*
+ * We just recovered from a rollback generated by a possible
+ * epsilon transition, go directly to the analysis phase
+ */
+ if (STATE == ROLLBACK_PARENT) {
+
+ DEBUG_VALID_MSG("restored parent branch");
+ DEBUG_VALID_STATE(NODE, CONT)
+ ret = 1;
+ goto analyze;
+ }
+
+ DEBUG_VALID_STATE(NODE, CONT)
+ /*
+ * we may have to save a backup state here. This is the equivalent
+ * of handling epsilon transition in NFAs.
+ */
+ if ((CONT != NULL) &&
+ ((CONT->parent == NULL) ||
+ (CONT->parent->type != XML_ELEMENT_CONTENT_OR)) &&
+ ((CONT->ocur == XML_ELEMENT_CONTENT_MULT) ||
+ (CONT->ocur == XML_ELEMENT_CONTENT_OPT) ||
+ ((CONT->ocur == XML_ELEMENT_CONTENT_PLUS) && (OCCURRENCE)))) {
+ DEBUG_VALID_MSG("saving parent branch");
+ if (vstateVPush(ctxt, CONT, NODE, DEPTH, OCCURS, ROLLBACK_PARENT) < 0)
+ return(0);
+ }
+
+
+ /*
+ * Check first if the content matches
+ */
+ switch (CONT->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ if (NODE == NULL) {
+ DEBUG_VALID_MSG("pcdata failed no node");
+ ret = 0;
+ break;
+ }
+ if (NODE->type == XML_TEXT_NODE) {
+ DEBUG_VALID_MSG("pcdata found, skip to next");
+ /*
+ * go to next element in the content model
+ * skipping ignorable elems
+ */
+ do {
+ NODE = NODE->next;
+ NODE = xmlValidateSkipIgnorable(NODE);
+ if ((NODE != NULL) &&
+ (NODE->type == XML_ENTITY_REF_NODE))
+ return(-2);
+ } while ((NODE != NULL) &&
+ ((NODE->type != XML_ELEMENT_NODE) &&
+ (NODE->type != XML_TEXT_NODE) &&
+ (NODE->type != XML_CDATA_SECTION_NODE)));
+ ret = 1;
+ break;
+ } else {
+ DEBUG_VALID_MSG("pcdata failed");
+ ret = 0;
+ break;
+ }
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ if (NODE == NULL) {
+ DEBUG_VALID_MSG("element failed no node");
+ ret = 0;
+ break;
+ }
+ ret = ((NODE->type == XML_ELEMENT_NODE) &&
+ (xmlStrEqual(NODE->name, CONT->name)));
+ if (ret == 1) {
+ if ((NODE->ns == NULL) || (NODE->ns->prefix == NULL)) {
+ ret = (CONT->prefix == NULL);
+ } else if (CONT->prefix == NULL) {
+ ret = 0;
+ } else {
+ ret = xmlStrEqual(NODE->ns->prefix, CONT->prefix);
+ }
+ }
+ if (ret == 1) {
+ DEBUG_VALID_MSG("element found, skip to next");
+ /*
+ * go to next element in the content model
+ * skipping ignorable elems
+ */
+ do {
+ NODE = NODE->next;
+ NODE = xmlValidateSkipIgnorable(NODE);
+ if ((NODE != NULL) &&
+ (NODE->type == XML_ENTITY_REF_NODE))
+ return(-2);
+ } while ((NODE != NULL) &&
+ ((NODE->type != XML_ELEMENT_NODE) &&
+ (NODE->type != XML_TEXT_NODE) &&
+ (NODE->type != XML_CDATA_SECTION_NODE)));
+ } else {
+ DEBUG_VALID_MSG("element failed");
+ ret = 0;
+ break;
+ }
+ break;
+ case XML_ELEMENT_CONTENT_OR:
+ /*
+ * Small optimization.
+ */
+ if (CONT->c1->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if ((NODE == NULL) ||
+ (!xmlStrEqual(NODE->name, CONT->c1->name))) {
+ DEPTH++;
+ CONT = CONT->c2;
+ goto cont;
+ }
+ if ((NODE->ns == NULL) || (NODE->ns->prefix == NULL)) {
+ ret = (CONT->c1->prefix == NULL);
+ } else if (CONT->c1->prefix == NULL) {
+ ret = 0;
+ } else {
+ ret = xmlStrEqual(NODE->ns->prefix, CONT->c1->prefix);
+ }
+ if (ret == 0) {
+ DEPTH++;
+ CONT = CONT->c2;
+ goto cont;
+ }
+ }
+
+ /*
+ * save the second branch 'or' branch
+ */
+ DEBUG_VALID_MSG("saving 'or' branch");
+ if (vstateVPush(ctxt, CONT->c2, NODE, (unsigned char)(DEPTH + 1),
+ OCCURS, ROLLBACK_OR) < 0)
+ return(-1);
+ DEPTH++;
+ CONT = CONT->c1;
+ goto cont;
+ case XML_ELEMENT_CONTENT_SEQ:
+ /*
+ * Small optimization.
+ */
+ if ((CONT->c1->type == XML_ELEMENT_CONTENT_ELEMENT) &&
+ ((CONT->c1->ocur == XML_ELEMENT_CONTENT_OPT) ||
+ (CONT->c1->ocur == XML_ELEMENT_CONTENT_MULT))) {
+ if ((NODE == NULL) ||
+ (!xmlStrEqual(NODE->name, CONT->c1->name))) {
+ DEPTH++;
+ CONT = CONT->c2;
+ goto cont;
+ }
+ if ((NODE->ns == NULL) || (NODE->ns->prefix == NULL)) {
+ ret = (CONT->c1->prefix == NULL);
+ } else if (CONT->c1->prefix == NULL) {
+ ret = 0;
+ } else {
+ ret = xmlStrEqual(NODE->ns->prefix, CONT->c1->prefix);
+ }
+ if (ret == 0) {
+ DEPTH++;
+ CONT = CONT->c2;
+ goto cont;
+ }
+ }
+ DEPTH++;
+ CONT = CONT->c1;
+ goto cont;
+ }
+
+ /*
+ * At this point handle going up in the tree
+ */
+ if (ret == -1) {
+ DEBUG_VALID_MSG("error found returning");
+ return(ret);
+ }
+analyze:
+ while (CONT != NULL) {
+ /*
+ * First do the analysis depending on the occurrence model at
+ * this level.
+ */
+ if (ret == 0) {
+ switch (CONT->ocur) {
+ xmlNodePtr cur;
+
+ case XML_ELEMENT_CONTENT_ONCE:
+ cur = ctxt->vstate->node;
+ DEBUG_VALID_MSG("Once branch failed, rollback");
+ if (vstateVPop(ctxt) < 0 ) {
+ DEBUG_VALID_MSG("exhaustion, failed");
+ return(0);
+ }
+ if (cur != ctxt->vstate->node)
+ determinist = -3;
+ goto cont;
+ case XML_ELEMENT_CONTENT_PLUS:
+ if (OCCURRENCE == 0) {
+ cur = ctxt->vstate->node;
+ DEBUG_VALID_MSG("Plus branch failed, rollback");
+ if (vstateVPop(ctxt) < 0 ) {
+ DEBUG_VALID_MSG("exhaustion, failed");
+ return(0);
+ }
+ if (cur != ctxt->vstate->node)
+ determinist = -3;
+ goto cont;
+ }
+ DEBUG_VALID_MSG("Plus branch found");
+ ret = 1;
+ break;
+ case XML_ELEMENT_CONTENT_MULT:
+#ifdef DEBUG_VALID_ALGO
+ if (OCCURRENCE == 0) {
+ DEBUG_VALID_MSG("Mult branch failed");
+ } else {
+ DEBUG_VALID_MSG("Mult branch found");
+ }
+#endif
+ ret = 1;
+ break;
+ case XML_ELEMENT_CONTENT_OPT:
+ DEBUG_VALID_MSG("Option branch failed");
+ ret = 1;
+ break;
+ }
+ } else {
+ switch (CONT->ocur) {
+ case XML_ELEMENT_CONTENT_OPT:
+ DEBUG_VALID_MSG("Option branch succeeded");
+ ret = 1;
+ break;
+ case XML_ELEMENT_CONTENT_ONCE:
+ DEBUG_VALID_MSG("Once branch succeeded");
+ ret = 1;
+ break;
+ case XML_ELEMENT_CONTENT_PLUS:
+ if (STATE == ROLLBACK_PARENT) {
+ DEBUG_VALID_MSG("Plus branch rollback");
+ ret = 1;
+ break;
+ }
+ if (NODE == NULL) {
+ DEBUG_VALID_MSG("Plus branch exhausted");
+ ret = 1;
+ break;
+ }
+ DEBUG_VALID_MSG("Plus branch succeeded, continuing");
+ SET_OCCURRENCE;
+ goto cont;
+ case XML_ELEMENT_CONTENT_MULT:
+ if (STATE == ROLLBACK_PARENT) {
+ DEBUG_VALID_MSG("Mult branch rollback");
+ ret = 1;
+ break;
+ }
+ if (NODE == NULL) {
+ DEBUG_VALID_MSG("Mult branch exhausted");
+ ret = 1;
+ break;
+ }
+ DEBUG_VALID_MSG("Mult branch succeeded, continuing");
+ /* SET_OCCURRENCE; */
+ goto cont;
+ }
+ }
+ STATE = 0;
+
+ /*
+ * Then act accordingly at the parent level
+ */
+ RESET_OCCURRENCE;
+ if (CONT->parent == NULL)
+ break;
+
+ switch (CONT->parent->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ DEBUG_VALID_MSG("Error: parent pcdata");
+ return(-1);
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ DEBUG_VALID_MSG("Error: parent element");
+ return(-1);
+ case XML_ELEMENT_CONTENT_OR:
+ if (ret == 1) {
+ DEBUG_VALID_MSG("Or succeeded");
+ CONT = CONT->parent;
+ DEPTH--;
+ } else {
+ DEBUG_VALID_MSG("Or failed");
+ CONT = CONT->parent;
+ DEPTH--;
+ }
+ break;
+ case XML_ELEMENT_CONTENT_SEQ:
+ if (ret == 0) {
+ DEBUG_VALID_MSG("Sequence failed");
+ CONT = CONT->parent;
+ DEPTH--;
+ } else if (CONT == CONT->parent->c1) {
+ DEBUG_VALID_MSG("Sequence testing 2nd branch");
+ CONT = CONT->parent->c2;
+ goto cont;
+ } else {
+ DEBUG_VALID_MSG("Sequence succeeded");
+ CONT = CONT->parent;
+ DEPTH--;
+ }
+ }
+ }
+ if (NODE != NULL) {
+ xmlNodePtr cur;
+
+ cur = ctxt->vstate->node;
+ DEBUG_VALID_MSG("Failed, remaining input, rollback");
+ if (vstateVPop(ctxt) < 0 ) {
+ DEBUG_VALID_MSG("exhaustion, failed");
+ return(0);
+ }
+ if (cur != ctxt->vstate->node)
+ determinist = -3;
+ goto cont;
+ }
+ if (ret == 0) {
+ xmlNodePtr cur;
+
+ cur = ctxt->vstate->node;
+ DEBUG_VALID_MSG("Failure, rollback");
+ if (vstateVPop(ctxt) < 0 ) {
+ DEBUG_VALID_MSG("exhaustion, failed");
+ return(0);
+ }
+ if (cur != ctxt->vstate->node)
+ determinist = -3;
+ goto cont;
+ }
+ return(determinist);
+}
+#endif
+
+/**
+ * xmlSnprintfElements:
+ * @param buf an output buffer
+ * @param size the size of the buffer
+ * @param content An element
+ * @param glob 1 if one must print the englobing parenthesis, 0 otherwise
+ *
+ * This will dump the list of elements to the buffer
+ * Intended just for the debug routine
+ */
+static void
+xmlSnprintfElements(char *buf, int size, xmlNodePtr node, int glob) {
+ xmlNodePtr cur;
+ int len;
+
+ if (node == NULL) return;
+ if (glob) strcat(buf, "(");
+ cur = node;
+ while (cur != NULL) {
+ len = strlen(buf);
+ if (size - len < 50) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ switch (cur->type) {
+ case XML_ELEMENT_NODE:
+ if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
+ if (size - len < xmlStrlen(cur->ns->prefix) + 10) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ strcat(buf, (char *) cur->ns->prefix);
+ strcat(buf, ":");
+ }
+ if (size - len < xmlStrlen(cur->name) + 10) {
+ if ((size - len > 4) && (buf[len - 1] != '.'))
+ strcat(buf, " ...");
+ return;
+ }
+ strcat(buf, (char *) cur->name);
+ if (cur->next != NULL)
+ strcat(buf, " ");
+ break;
+ case XML_TEXT_NODE:
+ if (xmlIsBlankNode(cur))
+ break;
+ case XML_CDATA_SECTION_NODE:
+ case XML_ENTITY_REF_NODE:
+ strcat(buf, "CDATA");
+ if (cur->next != NULL)
+ strcat(buf, " ");
+ break;
+ case XML_ATTRIBUTE_NODE:
+ case XML_DOCUMENT_NODE:
+#ifdef LIBXML_DOCB_ENABLED
+ case XML_DOCB_DOCUMENT_NODE:
+#endif
+ case XML_HTML_DOCUMENT_NODE:
+ case XML_DOCUMENT_TYPE_NODE:
+ case XML_DOCUMENT_FRAG_NODE:
+ case XML_NOTATION_NODE:
+ case XML_NAMESPACE_DECL:
+ strcat(buf, "???");
+ if (cur->next != NULL)
+ strcat(buf, " ");
+ break;
+ case XML_ENTITY_NODE:
+ case XML_PI_NODE:
+ case XML_DTD_NODE:
+ case XML_COMMENT_NODE:
+ case XML_ELEMENT_DECL:
+ case XML_ATTRIBUTE_DECL:
+ case XML_ENTITY_DECL:
+ case XML_XINCLUDE_START:
+ case XML_XINCLUDE_END:
+ break;
+ }
+ cur = cur->next;
+ }
+ if (glob) strcat(buf, ")");
+}
+
+/**
+ * xmlValidateElementContent:
+ * @param ctxt the validation context
+ * @param child the child list
+ * @param elemDecl pointer to the element declaration
+ * @param warn emit the error message
+ * @param parent the parent element (for error reporting)
+ *
+ * Try to validate the content model of an element
+ *
+ * returns 1 if valid or 0 if not and -1 in case of error
+ */
+
+static int
+xmlValidateElementContent(xmlValidCtxtPtr ctxt, xmlNodePtr child,
+ xmlElementPtr elemDecl, int warn, xmlNodePtr parent) {
+ int ret = 1;
+#ifndef LIBXML_REGEXP_ENABLED
+ xmlNodePtr repl = NULL, last = NULL, tmp;
+#endif
+ xmlNodePtr cur;
+ xmlElementContentPtr cont;
+ const xmlChar *name;
+
+ if (elemDecl == NULL)
+ return(-1);
+ cont = elemDecl->content;
+ name = elemDecl->name;
+
+#ifdef LIBXML_REGEXP_ENABLED
+ /* Build the regexp associated to the content model */
+ if (elemDecl->contModel == NULL)
+ ret = xmlValidBuildContentModel(ctxt, elemDecl);
+ if (elemDecl->contModel == NULL) {
+ return(-1);
+ } else {
+ xmlRegExecCtxtPtr exec;
+
+ if (!xmlRegexpIsDeterminist(elemDecl->contModel)) {
+ return(-1);
+ }
+ ctxt->nodeMax = 0;
+ ctxt->nodeNr = 0;
+ ctxt->nodeTab = NULL;
+ exec = xmlRegNewExecCtxt(elemDecl->contModel, NULL, NULL);
+ if (exec != NULL) {
+ cur = child;
+ while (cur != NULL) {
+ switch (cur->type) {
+ case XML_ENTITY_REF_NODE:
+ /*
+ * Push the current node to be able to roll back
+ * and process within the entity
+ */
+ if ((cur->children != NULL) &&
+ (cur->children->children != NULL)) {
+ nodeVPush(ctxt, cur);
+ cur = cur->children->children;
+ continue;
+ }
+ break;
+ case XML_TEXT_NODE:
+ if (xmlIsBlankNode(cur))
+ break;
+ ret = 0;
+ goto fail;
+ case XML_CDATA_SECTION_NODE:
+
+ ret = 0;
+ goto fail;
+ case XML_ELEMENT_NODE:
+ if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(cur->name,
+ cur->ns->prefix, fn, 50);
+ if (fullname == NULL) {
+ ret = -1;
+ goto fail;
+ }
+ ret = xmlRegExecPushString(exec, fullname, NULL);
+ if ((fullname != fn) && (fullname != cur->name))
+ xmlFree(fullname);
+ } else {
+ ret = xmlRegExecPushString(exec, cur->name, NULL);
+ }
+ break;
+ default:
+ break;
+ }
+ /*
+ * Switch to next element
+ */
+ cur = cur->next;
+ while (cur == NULL) {
+ cur = nodeVPop(ctxt);
+ if (cur == NULL)
+ break;
+ cur = cur->next;
+ }
+ }
+ ret = xmlRegExecPushString(exec, NULL, NULL);
+fail:
+ xmlRegFreeExecCtxt(exec);
+ }
+ }
+#else /* LIBXML_REGEXP_ENABLED */
+ /*
+ * Allocate the stack
+ */
+ ctxt->vstateMax = 8;
+ ctxt->vstateTab = (xmlValidState *) xmlMalloc(
+ ctxt->vstateMax * sizeof(ctxt->vstateTab[0]));
+ if (ctxt->vstateTab == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ return(-1);
+ }
+ /*
+ * The first entry in the stack is reserved to the current state
+ */
+ ctxt->nodeMax = 0;
+ ctxt->nodeNr = 0;
+ ctxt->nodeTab = NULL;
+ ctxt->vstate = &ctxt->vstateTab[0];
+ ctxt->vstateNr = 1;
+ CONT = cont;
+ NODE = child;
+ DEPTH = 0;
+ OCCURS = 0;
+ STATE = 0;
+ ret = xmlValidateElementType(ctxt);
+ if ((ret == -3) && (warn)) {
+ xmlErrValidWarning(ctxt, child, XML_DTD_CONTENT_NOT_DETERMINIST,
+ EMBED_ERRTXT("Content model for Element %s is ambiguous\n"),
+ name, NULL, NULL);
+ } else if (ret == -2) {
+ /*
+ * An entities reference appeared at this level.
+ * Buid a minimal representation of this node content
+ * sufficient to run the validation process on it
+ */
+ DEBUG_VALID_MSG("Found an entity reference, linearizing");
+ cur = child;
+ while (cur != NULL) {
+ switch (cur->type) {
+ case XML_ENTITY_REF_NODE:
+ /*
+ * Push the current node to be able to roll back
+ * and process within the entity
+ */
+ if ((cur->children != NULL) &&
+ (cur->children->children != NULL)) {
+ nodeVPush(ctxt, cur);
+ cur = cur->children->children;
+ continue;
+ }
+ break;
+ case XML_TEXT_NODE:
+ if (xmlIsBlankNode(cur))
+ break;
+ /* no break on purpose */
+ case XML_CDATA_SECTION_NODE:
+ /* no break on purpose */
+ case XML_ELEMENT_NODE:
+ /*
+ * Allocate a new node and minimally fills in
+ * what's required
+ */
+ tmp = (xmlNodePtr) xmlMalloc(sizeof(xmlNode));
+ if (tmp == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("malloc failed"));
+ xmlFreeNodeList(repl);
+ ret = -1;
+ goto done;
+ }
+ tmp->type = cur->type;
+ tmp->name = cur->name;
+ tmp->ns = cur->ns;
+ tmp->next = NULL;
+ tmp->content = NULL;
+ if (repl == NULL)
+ repl = last = tmp;
+ else {
+ last->next = tmp;
+ last = tmp;
+ }
+ if (cur->type == XML_CDATA_SECTION_NODE) {
+ /*
+ * E59 spaces in CDATA does not match the
+ * nonterminal S
+ */
+ tmp->content = xmlStrdup(BAD_CAST "CDATA");
+ }
+ break;
+ default:
+ break;
+ }
+ /*
+ * Switch to next element
+ */
+ cur = cur->next;
+ while (cur == NULL) {
+ cur = nodeVPop(ctxt);
+ if (cur == NULL)
+ break;
+ cur = cur->next;
+ }
+ }
+
+ /*
+ * Relaunch the validation
+ */
+ ctxt->vstate = &ctxt->vstateTab[0];
+ ctxt->vstateNr = 1;
+ CONT = cont;
+ NODE = repl;
+ DEPTH = 0;
+ OCCURS = 0;
+ STATE = 0;
+ ret = xmlValidateElementType(ctxt);
+ }
+#endif /* LIBXML_REGEXP_ENABLED */
+ if ((warn) && ((ret != 1) && (ret != -3))) {
+ if ((ctxt != NULL) && (ctxt->warning != NULL)) {
+#if 0
+ char expr[5000];
+ char list[5000];
+#endif
+ char *expr, *list;
+ expr = (char *)malloc(5000);
+ list = (char *)malloc(5000);
+
+ expr[0] = 0;
+ xmlSnprintfElementContent(&expr[0], 5000, cont, 1);
+ list[0] = 0;
+#ifndef LIBXML_REGEXP_ENABLED
+ if (repl != NULL)
+ xmlSnprintfElements(&list[0], 5000, repl, 1);
+ else
+#endif /* LIBXML_REGEXP_ENABLED */
+ xmlSnprintfElements(&list[0], 5000, child, 1);
+
+ if (name != NULL) {
+ xmlErrValidNode(ctxt, parent, XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element %s content does not follow the DTD, expecting %s, got %s\n"),
+ name, BAD_CAST expr, BAD_CAST list);
+ } else {
+ xmlErrValidNode(ctxt, parent, XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element content does not follow the DTD, expecting %s, got %s\n"),
+ BAD_CAST expr, BAD_CAST list, NULL);
+ }
+ free(expr), free(list);
+ } else {
+ if (name != NULL) {
+ xmlErrValidNode(ctxt, parent, XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element %s content does not follow the DTD\n"),
+ name, NULL, NULL);
+ } else {
+ xmlErrValidNode(ctxt, parent, XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element content does not follow the DTD\n"),
+ NULL, NULL, NULL);
+ }
+ }
+ ret = 0;
+ }
+ if (ret == -3)
+ ret = 1;
+
+#ifndef LIBXML_REGEXP_ENABLED
+done:
+ /*
+ * Deallocate the copy if done, and free up the validation stack
+ */
+ while (repl != NULL) {
+ tmp = repl->next;
+ xmlFree(repl);
+ repl = tmp;
+ }
+ ctxt->vstateMax = 0;
+ if (ctxt->vstateTab != NULL) {
+ xmlFree(ctxt->vstateTab);
+ ctxt->vstateTab = NULL;
+ }
+#endif
+ ctxt->nodeMax = 0;
+ ctxt->nodeNr = 0;
+ if (ctxt->nodeTab != NULL) {
+ xmlFree(ctxt->nodeTab);
+ ctxt->nodeTab = NULL;
+ }
+ return(ret);
+
+}
+
+/**
+ * xmlValidateCdataElement:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ *
+ * Check that an element follows #CDATA
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+static int
+xmlValidateOneCdataElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem) {
+ int ret = 1;
+ xmlNodePtr cur, child;
+
+ if ((ctxt == NULL) || (doc == NULL) || (elem == NULL))
+ return(0);
+
+ child = elem->children;
+
+ cur = child;
+ while (cur != NULL) {
+ switch (cur->type) {
+ case XML_ENTITY_REF_NODE:
+ /*
+ * Push the current node to be able to roll back
+ * and process within the entity
+ */
+ if ((cur->children != NULL) &&
+ (cur->children->children != NULL)) {
+ nodeVPush(ctxt, cur);
+ cur = cur->children->children;
+ continue;
+ }
+ break;
+ case XML_COMMENT_NODE:
+ case XML_PI_NODE:
+ case XML_TEXT_NODE:
+ case XML_CDATA_SECTION_NODE:
+ break;
+ default:
+ ret = 0;
+ goto done;
+ }
+ /*
+ * Switch to next element
+ */
+ cur = cur->next;
+ while (cur == NULL) {
+ cur = nodeVPop(ctxt);
+ if (cur == NULL)
+ break;
+ cur = cur->next;
+ }
+ }
+done:
+ ctxt->nodeMax = 0;
+ ctxt->nodeNr = 0;
+ if (ctxt->nodeTab != NULL) {
+ xmlFree(ctxt->nodeTab);
+ ctxt->nodeTab = NULL;
+ }
+ return(ret);
+}
+
+/**
+ * xmlValidateCheckMixed:
+ * @param ctxt the validation context
+ * @param cont the mixed content model
+ * @param qname the qualified name as appearing in the serialization
+ *
+ * Check if the given node is part of the content model.
+ *
+ * Returns 1 if yes, 0 if no, -1 in case of error
+ */
+static int
+xmlValidateCheckMixed(xmlValidCtxtPtr ctxt,
+ xmlElementContentPtr cont, const xmlChar *qname) {
+ const xmlChar *name;
+ int plen;
+ name = xmlSplitQName3(qname, &plen);
+
+ if (name == NULL) {
+ while (cont != NULL) {
+ if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if ((cont->prefix == NULL) && (xmlStrEqual(cont->name, qname)))
+ return(1);
+ } else if ((cont->type == XML_ELEMENT_CONTENT_OR) &&
+ (cont->c1 != NULL) &&
+ (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)){
+ if ((cont->c1->prefix == NULL) &&
+ (xmlStrEqual(cont->c1->name, qname)))
+ return(1);
+ } else if ((cont->type != XML_ELEMENT_CONTENT_OR) ||
+ (cont->c1 == NULL) ||
+ (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)){
+ xmlErrValid(NULL, XML_DTD_MIXED_CORRUPT,
+ EMBED_ERRTXT("Internal: MIXED struct corrupted\n"),
+ NULL);
+ break;
+ }
+ cont = cont->c2;
+ }
+ } else {
+ while (cont != NULL) {
+ if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if ((cont->prefix != NULL) &&
+ (xmlStrncmp(cont->prefix, qname, plen) == 0) &&
+ (xmlStrEqual(cont->name, name)))
+ return(1);
+ } else if ((cont->type == XML_ELEMENT_CONTENT_OR) &&
+ (cont->c1 != NULL) &&
+ (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)){
+ if ((cont->c1->prefix != NULL) &&
+ (xmlStrncmp(cont->c1->prefix, qname, plen) == 0) &&
+ (xmlStrEqual(cont->c1->name, name)))
+ return(1);
+ } else if ((cont->type != XML_ELEMENT_CONTENT_OR) ||
+ (cont->c1 == NULL) ||
+ (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)){
+ xmlErrValid(ctxt, XML_DTD_MIXED_CORRUPT,
+ EMBED_ERRTXT("Internal: MIXED struct corrupted\n"),
+ NULL);
+ break;
+ }
+ cont = cont->c2;
+ }
+ }
+ return(0);
+}
+
+/**
+ * xmlValidGetElemDecl:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ * @param extsubset pointer, (out) indicate if the declaration was found
+ * in the external subset.
+ *
+ * Finds a declaration associated to an element in the document.
+ *
+ * returns the pointer to the declaration or NULL if not found.
+ */
+static xmlElementPtr
+xmlValidGetElemDecl(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem, int *extsubset) {
+ xmlElementPtr elemDecl = NULL;
+ const xmlChar *prefix = NULL;
+
+ if ((elem == NULL) || (elem->name == NULL)) return(NULL);
+ if (extsubset != NULL)
+ *extsubset = 0;
+
+ /*
+ * Fetch the declaration for the qualified name
+ */
+ if ((elem->ns != NULL) && (elem->ns->prefix != NULL))
+ prefix = elem->ns->prefix;
+
+ if (prefix != NULL) {
+ elemDecl = xmlGetDtdQElementDesc(doc->intSubset,
+ elem->name, prefix);
+ if ((elemDecl == NULL) && (doc->extSubset != NULL)) {
+ elemDecl = xmlGetDtdQElementDesc(doc->extSubset,
+ elem->name, prefix);
+ if ((elemDecl != NULL) && (extsubset != NULL))
+ *extsubset = 1;
+ }
+ }
+
+ /*
+ * Fetch the declaration for the non qualified name
+ * This is "non-strict" validation should be done on the
+ * full QName but in that case being flexible makes sense.
+ */
+ if (elemDecl == NULL) {
+ elemDecl = xmlGetDtdElementDesc(doc->intSubset, elem->name);
+ if ((elemDecl == NULL) && (doc->extSubset != NULL)) {
+ elemDecl = xmlGetDtdElementDesc(doc->extSubset, elem->name);
+ if ((elemDecl != NULL) && (extsubset != NULL))
+ *extsubset = 1;
+ }
+ }
+ if (elemDecl == NULL) {
+ xmlErrValidNode(ctxt, elem,
+ XML_DTD_UNKNOWN_ELEM,
+ EMBED_ERRTXT("No declaration for element %s\n"),
+ elem->name, NULL, NULL);
+ }
+ return(elemDecl);
+}
+
+#ifdef LIBXML_REGEXP_ENABLED
+/**
+ * xmlValidatePushElement:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ * @param qname the qualified name as appearing in the serialization
+ *
+ * Push a new element start on the validation stack.
+ *
+ * returns 1 if no validation problem was found or 0 otherwise
+ */
+int
+xmlValidatePushElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem, const xmlChar *qname) {
+ int ret = 1;
+ xmlElementPtr eDecl;
+ int extsubset = 0;
+
+/* printf("PushElem %s\n", qname); */
+ if ((ctxt->vstateNr > 0) && (ctxt->vstate != NULL)) {
+ xmlValidStatePtr state = ctxt->vstate;
+ xmlElementPtr elemDecl;
+
+ /*
+ * Check the new element agaisnt the content model of the new elem.
+ */
+ if (state->elemDecl != NULL) {
+ elemDecl = state->elemDecl;
+
+ switch(elemDecl->etype) {
+ case XML_ELEMENT_TYPE_UNDEFINED:
+ ret = 0;
+ break;
+ case XML_ELEMENT_TYPE_EMPTY:
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_NOT_EMPTY,
+ EMBED_ERRTXT("Element %s was declared EMPTY this one has content\n"),
+ state->node->name, NULL, NULL);
+ ret = 0;
+ break;
+ case XML_ELEMENT_TYPE_ANY:
+ /* I don't think anything is required then */
+ break;
+ case XML_ELEMENT_TYPE_MIXED:
+ /* simple case of declared as #PCDATA */
+ if ((elemDecl->content != NULL) &&
+ (elemDecl->content->type ==
+ XML_ELEMENT_CONTENT_PCDATA)) {
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_NOT_PCDATA,
+ EMBED_ERRTXT("Element %s was declared #PCDATA but contains non text nodes\n"),
+ state->node->name, NULL, NULL);
+ ret = 0;
+ } else {
+ ret = xmlValidateCheckMixed(ctxt, elemDecl->content,
+ qname);
+ if (ret != 1) {
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_INVALID_CHILD,
+ EMBED_ERRTXT("Element %s is not declared in %s list of possible children\n"),
+ qname, state->node->name, NULL);
+ }
+ }
+ break;
+ case XML_ELEMENT_TYPE_ELEMENT:
+ /*
+ *
+ * VC: Standalone Document Declaration
+ * - element types with element content, if white space
+ * occurs directly within any instance of those types.
+ */
+ if (state->exec != NULL) {
+ ret = xmlRegExecPushString(state->exec, qname, NULL);
+ if (ret < 0) {
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element %s content does not follow the DTD, Misplaced %s\n"),
+ state->node->name, qname, NULL);
+ ret = 0;
+ } else {
+ ret = 1;
+ }
+ }
+ break;
+ }
+ }
+ }
+ eDecl = xmlValidGetElemDecl(ctxt, doc, elem, &extsubset);
+ vstateVPush(ctxt, eDecl, elem);
+ return(ret);
+}
+
+/**
+ * xmlValidatePushCData:
+ * @param ctxt the validation context
+ * @param data some character data read
+ * @param len the lenght of the data
+ *
+ * check the CData parsed for validation in the current stack
+ *
+ * returns 1 if no validation problem was found or 0 otherwise
+ */
+int
+xmlValidatePushCData(xmlValidCtxtPtr ctxt, const xmlChar *data, int len) {
+ int ret = 1;
+
+/* printf("CDATA %s %d\n", data, len); */
+ if (len <= 0)
+ return(ret);
+ if ((ctxt->vstateNr > 0) && (ctxt->vstate != NULL)) {
+ xmlValidStatePtr state = ctxt->vstate;
+ xmlElementPtr elemDecl;
+
+ /*
+ * Check the new element agaisnt the content model of the new elem.
+ */
+ if (state->elemDecl != NULL) {
+ elemDecl = state->elemDecl;
+
+ switch(elemDecl->etype) {
+ case XML_ELEMENT_TYPE_UNDEFINED:
+ ret = 0;
+ break;
+ case XML_ELEMENT_TYPE_EMPTY:
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_NOT_EMPTY,
+ EMBED_ERRTXT("Element %s was declared EMPTY this one has content\n"),
+ state->node->name, NULL, NULL);
+ ret = 0;
+ break;
+ case XML_ELEMENT_TYPE_ANY:
+ break;
+ case XML_ELEMENT_TYPE_MIXED:
+ break;
+ case XML_ELEMENT_TYPE_ELEMENT:
+ if (len > 0) {
+ int i;
+
+ for (i = 0;i < len;i++) {
+ if (!IS_BLANK_CH(data[i])) {
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element %s content does not follow the DTD, Text not allowed\n"),
+ state->node->name, NULL, NULL);
+ ret = 0;
+ goto done;
+ }
+ }
+ /*
+ *
+ * VC: Standalone Document Declaration
+ * element types with element content, if white space
+ * occurs directly within any instance of those types.
+ */
+ }
+ break;
+ }
+ }
+ }
+done:
+ return(ret);
+}
+
+/**
+ * xmlValidatePopElement:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ * @param qname the qualified name as appearing in the serialization
+ *
+ * Pop the element end from the validation stack.
+ *
+ * returns 1 if no validation problem was found or 0 otherwise
+ */
+int
+xmlValidatePopElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc ATTRIBUTE_UNUSED,
+ xmlNodePtr elem ATTRIBUTE_UNUSED,
+ const xmlChar *qname ATTRIBUTE_UNUSED) {
+ int ret = 1;
+
+/* printf("PopElem %s\n", qname); */
+ if ((ctxt->vstateNr > 0) && (ctxt->vstate != NULL)) {
+ xmlValidStatePtr state = ctxt->vstate;
+ xmlElementPtr elemDecl;
+
+ /*
+ * Check the new element agaisnt the content model of the new elem.
+ */
+ if (state->elemDecl != NULL) {
+ elemDecl = state->elemDecl;
+
+ if (elemDecl->etype == XML_ELEMENT_TYPE_ELEMENT) {
+ if (state->exec != NULL) {
+ ret = xmlRegExecPushString(state->exec, NULL, NULL);
+ if (ret == 0) {
+ xmlErrValidNode(ctxt, state->node,
+ XML_DTD_CONTENT_MODEL,
+ EMBED_ERRTXT("Element %s content does not follow the DTD, Expecting more child\n"),
+ state->node->name, NULL,NULL);
+ } else {
+ /*
+ * previous validation errors should not generate
+ * a new one here
+ */
+ ret = 1;
+ }
+ }
+ }
+ }
+ vstateVPop(ctxt);
+ }
+ return(ret);
+}
+#endif /* LIBXML_REGEXP_ENABLED */
+
+/**
+ * xmlValidateOneElement:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ *
+ * Try to validate a single element and it's attributes,
+ * basically it does the following checks as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: Element Valid ]
+ * - [ VC: Required Attribute ]
+ * Then call xmlValidateOneAttribute() for each attribute present.
+ *
+ * The ID/IDREF checkings are done separately
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateOneElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc,
+ xmlNodePtr elem) {
+ xmlElementPtr elemDecl = NULL;
+ xmlElementContentPtr cont;
+ xmlAttributePtr attr;
+ xmlNodePtr child;
+ int ret = 1, tmp;
+ const xmlChar *name;
+ int extsubset = 0;
+
+ CHECK_DTD;
+
+ if (elem == NULL) return(0);
+ switch (elem->type) {
+ case XML_ATTRIBUTE_NODE:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Attribute element not expected\n"), NULL, NULL ,NULL);
+ return(0);
+ case XML_TEXT_NODE:
+ if (elem->children != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Text element has children !\n"),
+ NULL,NULL,NULL);
+ return(0);
+ }
+ if (elem->properties != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Text element has attribute !\n"),
+ NULL,NULL,NULL);
+ return(0);
+ }
+ if (elem->ns != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Text element has namespace !\n"),
+ NULL,NULL,NULL);
+ return(0);
+ }
+ if (elem->nsDef != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Text element has namespace !\n"),
+ NULL,NULL,NULL);
+ return(0);
+ }
+ if (elem->content == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Text element has no content !\n"),
+ NULL,NULL,NULL);
+ return(0);
+ }
+ return(1);
+ case XML_XINCLUDE_START:
+ case XML_XINCLUDE_END:
+ return(1);
+ case XML_CDATA_SECTION_NODE:
+ case XML_ENTITY_REF_NODE:
+ case XML_PI_NODE:
+ case XML_COMMENT_NODE:
+ return(1);
+ case XML_ENTITY_NODE:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Entity element not expected\n"), NULL, NULL ,NULL);
+ return(0);
+ case XML_NOTATION_NODE:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Notation element not expected\n"), NULL, NULL ,NULL);
+ return(0);
+ case XML_DOCUMENT_NODE:
+ case XML_DOCUMENT_TYPE_NODE:
+ case XML_DOCUMENT_FRAG_NODE:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("Document element not expected\n"), NULL, NULL ,NULL);
+ return(0);
+
+ case XML_HTML_DOCUMENT_NODE:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("HTML Document not expected\n"), NULL, NULL ,NULL);
+ return(0);
+ case XML_ELEMENT_NODE:
+ break;
+ default:
+ xmlErrValidNode(ctxt, elem, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("unknown element type\n"), NULL, NULL ,NULL);
+ return(0);
+ }
+
+ /*
+ * Fetch the declaration
+ */
+ elemDecl = xmlValidGetElemDecl(ctxt, doc, elem, &extsubset);
+ if (elemDecl == NULL)
+ return(0);
+
+ /*
+ * If vstateNr is not zero that means continuous validation is
+ * activated, do not try to check the content model at that level.
+ */
+ if (ctxt->vstateNr == 0) {
+ /* Check that the element content matches the definition */
+ switch (elemDecl->etype) {
+ case XML_ELEMENT_TYPE_UNDEFINED:
+ xmlErrValidNode(ctxt, elem, XML_DTD_UNKNOWN_ELEM,
+ EMBED_ERRTXT("No declaration for element %s\n"),
+ elem->name, NULL, NULL);
+ return(0);
+ case XML_ELEMENT_TYPE_EMPTY:
+ if (elem->children != NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOT_EMPTY,
+ EMBED_ERRTXT("Element %s was declared EMPTY this one has content\n"),
+ elem->name, NULL, NULL);
+ ret = 0;
+ }
+ break;
+ case XML_ELEMENT_TYPE_ANY:
+ /* I don't think anything is required then */
+ break;
+ case XML_ELEMENT_TYPE_MIXED:
+
+ /* simple case of declared as #PCDATA */
+ if ((elemDecl->content != NULL) &&
+ (elemDecl->content->type == XML_ELEMENT_CONTENT_PCDATA)) {
+ ret = xmlValidateOneCdataElement(ctxt, doc, elem);
+ if (!ret) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_NOT_PCDATA,
+ EMBED_ERRTXT("Element %s was declared #PCDATA but contains non text nodes\n"),
+ elem->name, NULL, NULL);
+ }
+ break;
+ }
+ child = elem->children;
+ /* Hum, this start to get messy */
+ while (child != NULL) {
+ if (child->type == XML_ELEMENT_NODE) {
+ name = child->name;
+ if ((child->ns != NULL) && (child->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(child->name, child->ns->prefix,
+ fn, 50);
+ if (fullname == NULL)
+ return(0);
+ cont = elemDecl->content;
+ while (cont != NULL) {
+ if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if (xmlStrEqual(cont->name, fullname))
+ break;
+ } else if ((cont->type == XML_ELEMENT_CONTENT_OR) &&
+ (cont->c1 != NULL) &&
+ (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)){
+ if (xmlStrEqual(cont->c1->name, fullname))
+ break;
+ } else if ((cont->type != XML_ELEMENT_CONTENT_OR) ||
+ (cont->c1 == NULL) ||
+ (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)){
+ xmlErrValid(NULL, XML_DTD_MIXED_CORRUPT,
+ EMBED_ERRTXT("Internal: MIXED struct corrupted\n"),
+ NULL);
+ break;
+ }
+ cont = cont->c2;
+ }
+ if ((fullname != fn) && (fullname != child->name))
+ xmlFree(fullname);
+ if (cont != NULL)
+ goto child_ok;
+ }
+ cont = elemDecl->content;
+ while (cont != NULL) {
+ if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) {
+ if (xmlStrEqual(cont->name, name)) break;
+ } else if ((cont->type == XML_ELEMENT_CONTENT_OR) &&
+ (cont->c1 != NULL) &&
+ (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)) {
+ if (xmlStrEqual(cont->c1->name, name)) break;
+ } else if ((cont->type != XML_ELEMENT_CONTENT_OR) ||
+ (cont->c1 == NULL) ||
+ (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)) {
+ xmlErrValid(ctxt, XML_DTD_MIXED_CORRUPT,
+ EMBED_ERRTXT("Internal: MIXED struct corrupted\n"),
+ NULL);
+ break;
+ }
+ cont = cont->c2;
+ }
+ if (cont == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_INVALID_CHILD,
+ EMBED_ERRTXT("Element %s is not declared in %s list of possible children\n"),
+ name, elem->name, NULL);
+ ret = 0;
+ }
+ }
+child_ok:
+ child = child->next;
+ }
+ break;
+ case XML_ELEMENT_TYPE_ELEMENT:
+ if ((doc->standalone == 1) && (extsubset == 1)) {
+ /*
+ * VC: Standalone Document Declaration
+ * - element types with element content, if white space
+ * occurs directly within any instance of those types.
+ */
+ child = elem->children;
+ while (child != NULL) {
+ if (child->type == XML_TEXT_NODE) {
+ const xmlChar *content = child->content;
+
+ while (IS_BLANK_CH(*content))
+ content++;
+ if (*content == 0) {
+ xmlErrValidNode(ctxt, elem,
+ XML_DTD_STANDALONE_WHITE_SPACE,
+EMBED_ERRTXT("standalone: %s declared in the external subset contains white spaces nodes\n"),
+ elem->name, NULL, NULL);
+ ret = 0;
+ break;
+ }
+ }
+ child =child->next;
+ }
+ }
+ child = elem->children;
+ cont = elemDecl->content;
+ tmp = xmlValidateElementContent(ctxt, child, elemDecl, 1, elem);
+ if (tmp <= 0)
+ ret = tmp;
+ break;
+ }
+ } /* not continuous */
+
+ /* [ VC: Required Attribute ] */
+ attr = elemDecl->attributes;
+ while (attr != NULL) {
+ if (attr->def == XML_ATTRIBUTE_REQUIRED) {
+ int qualified = -1;
+
+ if ((attr->prefix == NULL) &&
+ (xmlStrEqual(attr->name, BAD_CAST "xmlns"))) {
+ xmlNsPtr ns;
+
+ ns = elem->nsDef;
+ while (ns != NULL) {
+ if (ns->prefix == NULL)
+ goto found;
+ ns = ns->next;
+ }
+ } else if (xmlStrEqual(attr->prefix, BAD_CAST "xmlns")) {
+ xmlNsPtr ns;
+
+ ns = elem->nsDef;
+ while (ns != NULL) {
+ if (xmlStrEqual(attr->name, ns->prefix))
+ goto found;
+ ns = ns->next;
+ }
+ } else {
+ xmlAttrPtr attrib;
+
+ attrib = elem->properties;
+ while (attrib != NULL) {
+ if (xmlStrEqual(attrib->name, attr->name)) {
+ if (attr->prefix != NULL) {
+ xmlNsPtr nameSpace = attrib->ns;
+
+ if (nameSpace == NULL)
+ nameSpace = elem->ns;
+ /*
+ * qualified names handling is problematic, having a
+ * different prefix should be possible but DTDs don't
+ * allow to define the URI instead of the prefix :-(
+ */
+ if (nameSpace == NULL) {
+ if (qualified < 0)
+ qualified = 0;
+ } else if (!xmlStrEqual(nameSpace->prefix,
+ attr->prefix)) {
+ if (qualified < 1)
+ qualified = 1;
+ } else
+ goto found;
+ } else {
+ /*
+ * We should allow applications to define namespaces
+ * for their application even if the DTD doesn't
+ * carry one, otherwise, basically we would always
+ * break.
+ */
+ goto found;
+ }
+ }
+ attrib = attrib->next;
+ }
+ }
+ if (qualified == -1) {
+ if (attr->prefix == NULL) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_MISSING_ATTRIBUTE,
+ EMBED_ERRTXT("Element %s does not carry attribute %s\n"),
+ elem->name, attr->name, NULL);
+ ret = 0;
+ } else {
+ xmlErrValidNode(ctxt, elem, XML_DTD_MISSING_ATTRIBUTE,
+ EMBED_ERRTXT("Element %s does not carry attribute %s:%s\n"),
+ elem->name, attr->prefix,attr->name);
+ ret = 0;
+ }
+ } else if (qualified == 0) {
+ xmlErrValidWarning(ctxt, elem, XML_DTD_NO_PREFIX,
+ EMBED_ERRTXT("Element %s required attribute %s:%s has no prefix\n"),
+ elem->name, attr->prefix, attr->name);
+ } else if (qualified == 1) {
+ xmlErrValidWarning(ctxt, elem, XML_DTD_DIFFERENT_PREFIX,
+ EMBED_ERRTXT("Element %s required attribute %s:%s has different prefix\n"),
+ elem->name, attr->prefix, attr->name);
+ }
+ } else if (attr->def == XML_ATTRIBUTE_FIXED) {
+ /*
+ * Special tests checking #FIXED namespace declarations
+ * have the right value since this is not done as an
+ * attribute checking
+ */
+ if ((attr->prefix == NULL) &&
+ (xmlStrEqual(attr->name, BAD_CAST "xmlns"))) {
+ xmlNsPtr ns;
+
+ ns = elem->nsDef;
+ while (ns != NULL) {
+ if (ns->prefix == NULL) {
+ if (!xmlStrEqual(attr->defaultValue, ns->href)) {
+ xmlErrValidNode(ctxt, elem,
+ XML_DTD_ELEM_DEFAULT_NAMESPACE,
+ EMBED_ERRTXT("Element %s namespace name for default namespace does not match the DTD\n"),
+ elem->name, NULL, NULL);
+ ret = 0;
+ }
+ goto found;
+ }
+ ns = ns->next;
+ }
+ } else if (xmlStrEqual(attr->prefix, BAD_CAST "xmlns")) {
+ xmlNsPtr ns;
+
+ ns = elem->nsDef;
+ while (ns != NULL) {
+ if (xmlStrEqual(attr->name, ns->prefix)) {
+ if (!xmlStrEqual(attr->defaultValue, ns->href)) {
+ xmlErrValidNode(ctxt, elem, XML_DTD_ELEM_NAMESPACE,
+ EMBED_ERRTXT("Element %s namespace name for %s does not match the DTD\n"),
+ elem->name, ns->prefix, NULL);
+ ret = 0;
+ }
+ goto found;
+ }
+ ns = ns->next;
+ }
+ }
+ }
+found:
+ attr = attr->nexth;
+ }
+ return(ret);
+}
+
+/**
+ * xmlValidateRoot:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ *
+ * Try to validate a the root element
+ * basically it does the following check as described by the
+ * XML-1.0 recommendation:
+ * - [ VC: Root Element Type ]
+ * it doesn't try to recurse or apply other check to the element
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateRoot(xmlValidCtxtPtr ctxt, xmlDocPtr doc) {
+ xmlNodePtr root;
+ int ret;
+
+ if (doc == NULL) return(0);
+
+ root = xmlDocGetRootElement(doc);
+ if ((root == NULL) || (root->name == NULL)) {
+ xmlErrValid(ctxt, XML_DTD_NO_ROOT,
+ EMBED_ERRTXT("no root element\n"), NULL);
+ return(0);
+ }
+
+ /*
+ * When doing post validation against a separate DTD, those may
+ * no internal subset has been generated
+ */
+ if ((doc->intSubset != NULL) &&
+ (doc->intSubset->name != NULL)) {
+ /*
+ * Check first the document root against the NQName
+ */
+ if (!xmlStrEqual(doc->intSubset->name, root->name)) {
+ if ((root->ns != NULL) && (root->ns->prefix != NULL)) {
+ xmlChar fn[50];
+ xmlChar *fullname;
+
+ fullname = xmlBuildQName(root->name, root->ns->prefix, fn, 50);
+ if (fullname == NULL) {
+ xmlVErrMemory(ctxt, NULL);
+ return(0);
+ }
+ ret = xmlStrEqual(doc->intSubset->name, fullname);
+ if ((fullname != fn) && (fullname != root->name))
+ xmlFree(fullname);
+ if (ret == 1)
+ goto name_ok;
+ }
+ if ((xmlStrEqual(doc->intSubset->name, BAD_CAST "HTML")) &&
+ (xmlStrEqual(root->name, BAD_CAST "html")))
+ goto name_ok;
+ xmlErrValidNode(ctxt, root, XML_DTD_ROOT_NAME,
+ EMBED_ERRTXT("root and DTD name do not match '%s' and '%s'\n"),
+ root->name, doc->intSubset->name, NULL);
+ return(0);
+ }
+ }
+name_ok:
+ return(1);
+}
+
+
+/**
+ * xmlValidateElement:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param elem an element instance
+ *
+ * Try to validate the subtree under an element
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr elem) {
+ xmlNodePtr child;
+ xmlAttrPtr attr;
+ xmlNsPtr ns;
+ const xmlChar *value;
+ int ret = 1;
+
+ if (elem == NULL) return(0);
+
+ /*
+ * XInclude elements were added after parsing in the infoset,
+ * they don't really mean anything validation wise.
+ */
+ if ((elem->type == XML_XINCLUDE_START) ||
+ (elem->type == XML_XINCLUDE_END))
+ return(1);
+
+ CHECK_DTD;
+
+ /*
+ * Entities references have to be handled separately
+ */
+ if (elem->type == XML_ENTITY_REF_NODE) {
+ return(1);
+ }
+
+ ret &= xmlValidateOneElement(ctxt, doc, elem);
+ attr = elem->properties;
+ while (attr != NULL) {
+ value = xmlNodeListGetString(doc, attr->children, 0);
+ ret &= xmlValidateOneAttribute(ctxt, doc, elem, attr, value);
+ if (value != NULL)
+ xmlFree((char *)value);
+ attr= attr->next;
+ }
+ ns = elem->nsDef;
+ while (ns != NULL) {
+ if (elem->ns == NULL)
+ ret &= xmlValidateOneNamespace(ctxt, doc, elem, NULL,
+ ns, ns->href);
+ else
+ ret &= xmlValidateOneNamespace(ctxt, doc, elem, elem->ns->prefix,
+ ns, ns->href);
+ ns = ns->next;
+ }
+ child = elem->children;
+ while (child != NULL) {
+ ret &= xmlValidateElement(ctxt, doc, child);
+ child = child->next;
+ }
+
+ return(ret);
+}
+
+/**
+ * xmlValidateRef:
+ * @param ref A reference to be validated
+ * @param ctxt Validation context
+ * @param name Name of ID we are searching for
+ *
+ */
+static void
+xmlValidateRef(xmlRefPtr ref, xmlValidCtxtPtr ctxt,
+ const xmlChar *name) {
+ xmlAttrPtr id;
+ xmlAttrPtr attr;
+
+ if (ref == NULL)
+ return;
+ if ((ref->attr == NULL) && (ref->name == NULL))
+ return;
+ attr = ref->attr;
+ if (attr == NULL) {
+ xmlChar *dup, *str = NULL, *cur, save;
+
+ dup = xmlStrdup(name);
+ if (dup == NULL) {
+ ctxt->valid = 0;
+ return;
+ }
+ cur = dup;
+ while (*cur != 0) {
+ str = cur;
+ while ((*cur != 0) && (!IS_BLANK_CH(*cur))) cur++;
+ save = *cur;
+ *cur = 0;
+ id = xmlGetID(ctxt->doc, str);
+ if (id == NULL) {
+ xmlErrValidNodeNr(ctxt, NULL, XML_DTD_UNKNOWN_ID,
+ EMBED_ERRTXT("attribute %s line %d references an unknown ID \"%s\"\n"),
+ ref->name,
+#ifdef LIBXML_ENABLE_NODE_LINEINFO
+ ref->lineno,
+#else
+ 0, // line numbers are not stored
+#endif
+ str);
+ ctxt->valid = 0;
+ }
+ if (save == 0)
+ break;
+ *cur = save;
+ while (IS_BLANK_CH(*cur)) cur++;
+ }
+ xmlFree(dup);
+ } else if (attr->atype == XML_ATTRIBUTE_IDREF) {
+ id = xmlGetID(ctxt->doc, name);
+ if (id == NULL) {
+ xmlErrValidNode(ctxt, attr->parent, XML_DTD_UNKNOWN_ID,
+ EMBED_ERRTXT("IDREF attribute %s references an unknown ID \"%s\"\n"),
+ attr->name, name, NULL);
+ ctxt->valid = 0;
+ }
+ } else if (attr->atype == XML_ATTRIBUTE_IDREFS) {
+ xmlChar *dup, *str = NULL, *cur, save;
+
+ dup = xmlStrdup(name);
+ if (dup == NULL) {
+ xmlVErrMemory(ctxt, EMBED_ERRTXT("IDREFS split"));
+ ctxt->valid = 0;
+ return;
+ }
+ cur = dup;
+ while (*cur != 0) {
+ str = cur;
+ while ((*cur != 0) && (!IS_BLANK_CH(*cur))) cur++;
+ save = *cur;
+ *cur = 0;
+ id = xmlGetID(ctxt->doc, str);
+ if (id == NULL) {
+ xmlErrValidNode(ctxt, attr->parent, XML_DTD_UNKNOWN_ID,
+ EMBED_ERRTXT("IDREFS attribute %s references an unknown ID \"%s\"\n"),
+ attr->name, str, NULL);
+ ctxt->valid = 0;
+ }
+ if (save == 0)
+ break;
+ *cur = save;
+ while (IS_BLANK_CH(*cur)) cur++;
+ }
+ xmlFree(dup);
+ }
+}
+
+/**
+ * xmlWalkValidateList:
+ * @param data Contents of current link
+ * @param user Value supplied by the user
+ *
+ * Returns 0 to abort the walk or 1 to continue
+ */
+static int
+xmlWalkValidateList(const void *data, const void *user)
+{
+ xmlValidateMemoPtr memo = (xmlValidateMemoPtr)user;
+ xmlValidateRef((xmlRefPtr)data, memo->ctxt, memo->name);
+ return 1;
+}
+
+/**
+ * xmlValidateCheckRefCallback:
+ * @param ref_list List of references
+ * @param ctxt Validation context
+ * @param name Name of ID we are searching for
+ *
+ */
+static void
+xmlValidateCheckRefCallback(xmlListPtr ref_list, xmlValidCtxtPtr ctxt,
+ const xmlChar *name) {
+ xmlValidateMemo memo;
+
+ if (ref_list == NULL)
+ return;
+ memo.ctxt = ctxt;
+ memo.name = name;
+
+ xmlListWalk(ref_list, xmlWalkValidateList, &memo);
+
+}
+
+/**
+ * xmlValidateDocumentFinal:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ *
+ * Does the final step for the document validation once all the
+ * incremental validation steps have been completed
+ *
+ * basically it does the following checks described by the XML Rec
+ *
+ * Check all the IDREF/IDREFS attributes definition for validity
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateDocumentFinal(xmlValidCtxtPtr ctxt, xmlDocPtr doc) {
+ xmlRefTablePtr table;
+
+ if (doc == NULL) {
+ xmlErrValid(ctxt, XML_DTD_NO_DOC,
+ EMBED_ERRTXT("xmlValidateDocumentFinal: doc == NULL\n"), NULL);
+ return(0);
+ }
+
+ /*
+ * Check all the NOTATION/NOTATIONS attributes
+ */
+ /*
+ * Check all the ENTITY/ENTITIES attributes definition for validity
+ */
+ /*
+ * Check all the IDREF/IDREFS attributes definition for validity
+ */
+ table = (xmlRefTablePtr) doc->refs;
+ ctxt->doc = doc;
+ ctxt->valid = 1;
+ xmlHashScan(table, (xmlHashScanner) xmlValidateCheckRefCallback, ctxt);
+ return(ctxt->valid);
+}
+
+/**
+ * xmlValidateDtd:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ * @param dtd a dtd instance
+ *
+ * Try to validate the document against the dtd instance
+ *
+ * basically it does check all the definitions in the DtD.
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateDtd(xmlValidCtxtPtr ctxt, xmlDocPtr doc, xmlDtdPtr dtd) {
+ int ret;
+ xmlDtdPtr oldExt;
+ xmlNodePtr root;
+
+ if (dtd == NULL) return(0);
+ if (doc == NULL) return(0);
+ oldExt = doc->extSubset;
+ doc->extSubset = dtd;
+ ret = xmlValidateRoot(ctxt, doc);
+ if (ret == 0) {
+ doc->extSubset = oldExt;
+ return(ret);
+ }
+ if (doc->ids != NULL) {
+ xmlFreeIDTable(doc->ids);
+ doc->ids = NULL;
+ }
+ if (doc->refs != NULL) {
+ xmlFreeRefTable(doc->refs);
+ doc->refs = NULL;
+ }
+ root = xmlDocGetRootElement(doc);
+ ret = xmlValidateElement(ctxt, doc, root);
+ ret &= xmlValidateDocumentFinal(ctxt, doc);
+ doc->extSubset = oldExt;
+ return(ret);
+}
+
+static void
+xmlValidateNotationCallback(xmlEntityPtr cur, xmlValidCtxtPtr ctxt,
+ const xmlChar *name ATTRIBUTE_UNUSED) {
+ if (cur == NULL)
+ return;
+ if (cur->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
+ xmlChar *notation = cur->content;
+
+ if (notation != NULL) {
+ int ret;
+
+ ret = xmlValidateNotationUse(ctxt, cur->doc, notation);
+ if (ret != 1) {
+ ctxt->valid = 0;
+ }
+ }
+ }
+}
+
+static void
+xmlValidateAttributeCallback(xmlAttributePtr cur, xmlValidCtxtPtr ctxt,
+ const xmlChar *name ATTRIBUTE_UNUSED) {
+ int ret;
+ xmlDocPtr doc;
+ xmlElementPtr elem = NULL;
+
+ if (cur == NULL)
+ return;
+ switch (cur->atype) {
+ case XML_ATTRIBUTE_CDATA:
+ case XML_ATTRIBUTE_ID:
+ case XML_ATTRIBUTE_IDREF :
+ case XML_ATTRIBUTE_IDREFS:
+ case XML_ATTRIBUTE_NMTOKEN:
+ case XML_ATTRIBUTE_NMTOKENS:
+ case XML_ATTRIBUTE_ENUMERATION:
+ break;
+ case XML_ATTRIBUTE_ENTITY:
+ case XML_ATTRIBUTE_ENTITIES:
+ case XML_ATTRIBUTE_NOTATION:
+ if (cur->defaultValue != NULL) {
+
+ ret = xmlValidateAttributeValue2(ctxt, ctxt->doc, cur->name,
+ cur->atype, cur->defaultValue);
+ if ((ret == 0) && (ctxt->valid == 1))
+ ctxt->valid = 0;
+ }
+ if (cur->tree != NULL) {
+ xmlEnumerationPtr tree = cur->tree;
+ while (tree != NULL) {
+ ret = xmlValidateAttributeValue2(ctxt, ctxt->doc,
+ cur->name, cur->atype, tree->name);
+ if ((ret == 0) && (ctxt->valid == 1))
+ ctxt->valid = 0;
+ tree = tree->next;
+ }
+ }
+ }
+ if (cur->atype == XML_ATTRIBUTE_NOTATION) {
+ doc = cur->doc;
+ if (cur->elem == NULL) {
+ xmlErrValid(ctxt, XML_ERR_INTERNAL_ERROR,
+ EMBED_ERRTXT("xmlValidateAttributeCallback(%s): internal error\n"),
+ (const char *) cur->name);
+ return;
+ }
+
+ if (doc != NULL)
+ elem = xmlGetDtdElementDesc(doc->intSubset, cur->elem);
+ if ((elem == NULL) && (doc != NULL))
+ elem = xmlGetDtdElementDesc(doc->extSubset, cur->elem);
+ if ((elem == NULL) && (cur->parent != NULL) &&
+ (cur->parent->type == XML_DTD_NODE))
+ elem = xmlGetDtdElementDesc((xmlDtdPtr) cur->parent, cur->elem);
+ if (elem == NULL) {
+ xmlErrValidNode(ctxt, NULL, XML_DTD_UNKNOWN_ELEM,
+ EMBED_ERRTXT("attribute %s: could not find decl for element %s\n"),
+ cur->name, cur->elem, NULL);
+ return;
+ }
+ if (elem->etype == XML_ELEMENT_TYPE_EMPTY) {
+ xmlErrValidNode(ctxt, NULL, XML_DTD_EMPTY_NOTATION,
+ EMBED_ERRTXT("NOTATION attribute %s declared for EMPTY element %s\n"),
+ cur->name, cur->elem, NULL);
+ ctxt->valid = 0;
+ }
+ }
+}
+
+/**
+ * xmlValidateDtdFinal:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ *
+ * Does the final step for the dtds validation once all the
+ * subsets have been parsed
+ *
+ * basically it does the following checks described by the XML Rec
+ * - check that ENTITY and ENTITIES type attributes default or
+ * possible values matches one of the defined entities.
+ * - check that NOTATION type attributes default or
+ * possible values matches one of the defined notations.
+ *
+ * returns 1 if valid or 0 if invalid and -1 if not well-formed
+ */
+
+int
+xmlValidateDtdFinal(xmlValidCtxtPtr ctxt, xmlDocPtr doc) {
+ xmlDtdPtr dtd;
+ xmlAttributeTablePtr table;
+ xmlEntitiesTablePtr entities;
+
+ if (doc == NULL) return(0);
+ if ((doc->intSubset == NULL) && (doc->extSubset == NULL))
+ return(0);
+ ctxt->doc = doc;
+ ctxt->valid = 1;
+ dtd = doc->intSubset;
+ if ((dtd != NULL) && (dtd->attributes != NULL)) {
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ xmlHashScan(table, (xmlHashScanner) xmlValidateAttributeCallback, ctxt);
+ }
+ if ((dtd != NULL) && (dtd->entities != NULL)) {
+ entities = (xmlEntitiesTablePtr) dtd->entities;
+ xmlHashScan(entities, (xmlHashScanner) xmlValidateNotationCallback,
+ ctxt);
+ }
+ dtd = doc->extSubset;
+ if ((dtd != NULL) && (dtd->attributes != NULL)) {
+ table = (xmlAttributeTablePtr) dtd->attributes;
+ xmlHashScan(table, (xmlHashScanner) xmlValidateAttributeCallback, ctxt);
+ }
+ if ((dtd != NULL) && (dtd->entities != NULL)) {
+ entities = (xmlEntitiesTablePtr) dtd->entities;
+ xmlHashScan(entities, (xmlHashScanner) xmlValidateNotationCallback,
+ ctxt);
+ }
+ return(ctxt->valid);
+}
+
+/**
+ * xmlValidateDocument:
+ * @param ctxt the validation context
+ * @param doc a document instance
+ *
+ * Try to validate the document instance
+ *
+ * basically it does the all the checks described by the XML Rec
+ * i.e. validates the internal and external subset (if present)
+ * and validate the document tree.
+ *
+ * returns 1 if valid or 0 otherwise
+ */
+
+int
+xmlValidateDocument(xmlValidCtxtPtr ctxt, xmlDocPtr doc) {
+ int ret;
+ xmlNodePtr root;
+
+ if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) {
+ xmlErrValid(ctxt, XML_DTD_NO_DTD,
+ EMBED_ERRTXT("no DTD found!\n"), NULL);
+ return(0);
+ }
+ if ((doc->intSubset != NULL) && ((doc->intSubset->SystemID != NULL) ||
+ (doc->intSubset->ExternalID != NULL)) && (doc->extSubset == NULL)) {
+ doc->extSubset = xmlParseDTD(doc->intSubset->ExternalID,
+ doc->intSubset->SystemID);
+ if (doc->extSubset == NULL) {
+ if (doc->intSubset->SystemID != NULL) {
+ xmlErrValid(ctxt, XML_DTD_LOAD_ERROR,
+ EMBED_ERRTXT("Could not load the external subset \"%s\"\n"),
+ (const char *) doc->intSubset->SystemID);
+ } else {
+ xmlErrValid(ctxt, XML_DTD_LOAD_ERROR,
+ EMBED_ERRTXT("Could not load the external subset \"%s\"\n"),
+ (const char *) doc->intSubset->ExternalID);
+ }
+ return(0);
+ }
+ }
+
+ if (doc->ids != NULL) {
+ xmlFreeIDTable(doc->ids);
+ doc->ids = NULL;
+ }
+ if (doc->refs != NULL) {
+ xmlFreeRefTable(doc->refs);
+ doc->refs = NULL;
+ }
+ ret = xmlValidateDtdFinal(ctxt, doc);
+ if (!xmlValidateRoot(ctxt, doc)) return(0);
+
+ root = xmlDocGetRootElement(doc);
+ ret &= xmlValidateElement(ctxt, doc, root);
+ ret &= xmlValidateDocumentFinal(ctxt, doc);
+ return(ret);
+}
+
+/************************************************************************
+ * *
+ * Routines for dynamic validation editing *
+ * *
+ ************************************************************************/
+
+/**
+ * xmlValidGetPotentialChildren:
+ * @param ctree an element content tree
+ * @param list an array to store the list of child names
+ * @param len a pointer to the number of element in the list
+ * @param max the size of the array
+ *
+ * Build/extend a list of potential children allowed by the content tree
+ *
+ * returns the number of element in the list, or -1 in case of error.
+ */
+
+int
+xmlValidGetPotentialChildren(xmlElementContent *ctree, const xmlChar **list,
+ int *len, int max) {
+ int i;
+
+ if ((ctree == NULL) || (list == NULL) || (len == NULL))
+ return(-1);
+ if (*len >= max) return(*len);
+
+ switch (ctree->type) {
+ case XML_ELEMENT_CONTENT_PCDATA:
+ for (i = 0; i < *len;i++)
+ if (xmlStrEqual(BAD_CAST "#PCDATA", list[i])) return(*len);
+ list[(*len)++] = BAD_CAST "#PCDATA";
+ break;
+ case XML_ELEMENT_CONTENT_ELEMENT:
+ for (i = 0; i < *len;i++)
+ if (xmlStrEqual(ctree->name, list[i])) return(*len);
+ list[(*len)++] = ctree->name;
+ break;
+ case XML_ELEMENT_CONTENT_SEQ:
+ xmlValidGetPotentialChildren(ctree->c1, list, len, max);
+ xmlValidGetPotentialChildren(ctree->c2, list, len, max);
+ break;
+ case XML_ELEMENT_CONTENT_OR:
+ xmlValidGetPotentialChildren(ctree->c1, list, len, max);
+ xmlValidGetPotentialChildren(ctree->c2, list, len, max);
+ break;
+ }
+
+ return(*len);
+}
+
+/**
+ * xmlValidGetValidElements:
+ * @param prev an element to insert after
+ * @param next an element to insert next
+ * @param names an array to store the list of child names
+ * @param max the size of the array
+ *
+ * This function returns the list of authorized children to insert
+ * within an existing tree while respecting the validity constraints
+ * forced by the Dtd. The insertion point is defined using prev and
+ * next in the following ways:
+ * to insert before 'node': xmlValidGetValidElements(node->prev, node, ...
+ * to insert next 'node': xmlValidGetValidElements(node, node->next, ...
+ * to replace 'node': xmlValidGetValidElements(node->prev, node->next, ...
+ * to prepend a child to 'node': xmlValidGetValidElements(NULL, node->childs,
+ * to append a child to 'node': xmlValidGetValidElements(node->last, NULL, ...
+ *
+ * pointers to the element names are inserted at the beginning of the array
+ * and do not need to be freed.
+ *
+ * returns the number of element in the list, or -1 in case of error. If
+ * the function returns the value max the caller is invited to grow the
+ * receiving array and retry.
+ */
+
+int
+xmlValidGetValidElements(xmlNode *prev, xmlNode *next, const xmlChar **names,
+ int max) {
+ xmlValidCtxt vctxt;
+ int nb_valid_elements = 0;
+ const xmlChar *elements[256];
+ int nb_elements = 0, i;
+ const xmlChar *name;
+
+ xmlNode *ref_node;
+ xmlNode *parent;
+ xmlNode *test_node;
+
+ xmlNode *prev_next;
+ xmlNode *next_prev;
+ xmlNode *parent_childs;
+ xmlNode *parent_last;
+
+ xmlElement *element_desc;
+
+ memset(&vctxt, 0, sizeof (xmlValidCtxt));
+
+ if (prev == NULL && next == NULL)
+ return(-1);
+
+ if (names == NULL) return(-1);
+ if (max <= 0) return(-1);
+
+ nb_valid_elements = 0;
+ ref_node = prev ? prev : next;
+ parent = ref_node->parent;
+
+ /*
+ * Retrieves the parent element declaration
+ */
+ element_desc = xmlGetDtdElementDesc(parent->doc->intSubset,
+ parent->name);
+ if ((element_desc == NULL) && (parent->doc->extSubset != NULL))
+ element_desc = xmlGetDtdElementDesc(parent->doc->extSubset,
+ parent->name);
+ if (element_desc == NULL) return(-1);
+
+ /*
+ * Do a backup of the current tree structure
+ */
+ prev_next = prev ? prev->next : NULL;
+ next_prev = next ? next->prev : NULL;
+ parent_childs = parent->children;
+ parent_last = parent->last;
+
+ /*
+ * Creates a dummy node and insert it into the tree
+ */
+ test_node = xmlNewNode (NULL, BAD_CAST "<!dummy?>");
+ test_node->doc = ref_node->doc;
+ test_node->parent = parent;
+ test_node->prev = prev;
+ test_node->next = next;
+ name = test_node->name;
+
+ if (prev) prev->next = test_node;
+ else parent->children = test_node;
+
+ if (next) next->prev = test_node;
+ else parent->last = test_node;
+
+ /*
+ * Insert each potential child node and check if the parent is
+ * still valid
+ */
+ nb_elements = xmlValidGetPotentialChildren(element_desc->content,
+ elements, &nb_elements, 256);
+
+ for (i = 0;i < nb_elements;i++) {
+ test_node->name = elements[i];
+ if (xmlValidateOneElement(&vctxt, parent->doc, parent)) {
+ int j;
+
+ for (j = 0; j < nb_valid_elements;j++)
+ if (xmlStrEqual(elements[i], names[j])) break;
+ names[nb_valid_elements++] = elements[i];
+ if (nb_valid_elements >= max) break;
+ }
+ }
+
+ /*
+ * Restore the tree structure
+ */
+ if (prev) prev->next = prev_next;
+ if (next) next->prev = next_prev;
+ parent->children = parent_childs;
+ parent->last = parent_last;
+
+ /*
+ * Free up the dummy node
+ */
+ test_node->name = name;
+ xmlFreeNode(test_node);
+
+ return(nb_valid_elements);
+}
+#endif /* LIBXML_VALID_ENABLED */
+