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catalog.c
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catalog.c
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/**
* catalog.c: set of generic Catalog related routines
*
* Reference: SGML Open Technical Resolution TR9401:1997.
* http://www.jclark.com/sp/catalog.htm
*
* XML Catalogs Working Draft 06 August 2001
* http://www.oasis-open.org/committees/entity/spec-2001-08-06.html
*
* See Copyright for the status of this software.
*
* Daniel.Veillard@imag.fr
*/
#define IN_LIBXML
#include "libxml.h"
#ifdef LIBXML_CATALOG_ENABLED
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#elif defined (_WIN32)
#include <io.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <libxml/xmlmemory.h>
#include <libxml/hash.h>
#include <libxml/uri.h>
#include <libxml/parserInternals.h>
#include <libxml/catalog.h>
#include <libxml/xmlerror.h>
#include <libxml/threads.h>
#include "private/buf.h"
#include "private/error.h"
#define MAX_DELEGATE 50
#define MAX_CATAL_DEPTH 50
#ifdef _WIN32
# define PATH_SEPARATOR ';'
#else
# define PATH_SEPARATOR ':'
#endif
#define XML_URN_PUBID "urn:publicid:"
#define XML_CATAL_BREAK ((xmlChar *) -1)
#ifndef XML_XML_DEFAULT_CATALOG
#define XML_XML_DEFAULT_CATALOG "file://" SYSCONFDIR "/xml/catalog"
#endif
#ifndef XML_SGML_DEFAULT_CATALOG
#define XML_SGML_DEFAULT_CATALOG "file://" SYSCONFDIR "/sgml/catalog"
#endif
/************************************************************************
* *
* Types, all private *
* *
************************************************************************/
typedef enum {
XML_CATA_REMOVED = -1,
XML_CATA_NONE = 0,
XML_CATA_CATALOG,
XML_CATA_BROKEN_CATALOG,
XML_CATA_NEXT_CATALOG,
XML_CATA_GROUP,
XML_CATA_PUBLIC,
XML_CATA_SYSTEM,
XML_CATA_REWRITE_SYSTEM,
XML_CATA_DELEGATE_PUBLIC,
XML_CATA_DELEGATE_SYSTEM,
XML_CATA_URI,
XML_CATA_REWRITE_URI,
XML_CATA_DELEGATE_URI,
SGML_CATA_SYSTEM,
SGML_CATA_PUBLIC,
SGML_CATA_ENTITY,
SGML_CATA_PENTITY,
SGML_CATA_DOCTYPE,
SGML_CATA_LINKTYPE,
SGML_CATA_NOTATION,
SGML_CATA_DELEGATE,
SGML_CATA_BASE,
SGML_CATA_CATALOG,
SGML_CATA_DOCUMENT,
SGML_CATA_SGMLDECL
} xmlCatalogEntryType;
typedef struct _xmlCatalogEntry xmlCatalogEntry;
typedef xmlCatalogEntry *xmlCatalogEntryPtr;
struct _xmlCatalogEntry {
struct _xmlCatalogEntry *next;
struct _xmlCatalogEntry *parent;
struct _xmlCatalogEntry *children;
xmlCatalogEntryType type;
xmlChar *name;
xmlChar *value;
xmlChar *URL; /* The expanded URL using the base */
xmlCatalogPrefer prefer;
int dealloc;
int depth;
struct _xmlCatalogEntry *group;
};
typedef enum {
XML_XML_CATALOG_TYPE = 1,
XML_SGML_CATALOG_TYPE
} xmlCatalogType;
#define XML_MAX_SGML_CATA_DEPTH 10
struct _xmlCatalog {
xmlCatalogType type; /* either XML or SGML */
/*
* SGML Catalogs are stored as a simple hash table of catalog entries
* Catalog stack to check against overflows when building the
* SGML catalog
*/
char *catalTab[XML_MAX_SGML_CATA_DEPTH]; /* stack of catals */
int catalNr; /* Number of current catal streams */
int catalMax; /* Max number of catal streams */
xmlHashTablePtr sgml;
/*
* XML Catalogs are stored as a tree of Catalog entries
*/
xmlCatalogPrefer prefer;
xmlCatalogEntryPtr xml;
};
/************************************************************************
* *
* Global variables *
* *
************************************************************************/
/*
* Those are preferences
*/
static int xmlDebugCatalogs = 0; /* used for debugging */
static xmlCatalogAllow xmlCatalogDefaultAllow = XML_CATA_ALLOW_ALL;
static xmlCatalogPrefer xmlCatalogDefaultPrefer = XML_CATA_PREFER_PUBLIC;
/*
* Hash table containing all the trees of XML catalogs parsed by
* the application.
*/
static xmlHashTablePtr xmlCatalogXMLFiles = NULL;
/*
* The default catalog in use by the application
*/
static xmlCatalogPtr xmlDefaultCatalog = NULL;
/*
* A mutex for modifying the shared global catalog(s)
* xmlDefaultCatalog tree.
* It also protects xmlCatalogXMLFiles
* The core of this readers/writer scheme is in xmlFetchXMLCatalogFile()
*/
static xmlRMutexPtr xmlCatalogMutex = NULL;
/*
* Whether the catalog support was initialized.
*/
static int xmlCatalogInitialized = 0;
/************************************************************************
* *
* Forward declarations *
* *
************************************************************************/
static xmlChar *
xmlCatalogNormalizePublic(const xmlChar *pubID);
static int
xmlExpandCatalog(xmlCatalogPtr catal, const char *filename);
static int
xmlFetchXMLCatalogFile(xmlCatalogEntryPtr catal);
/************************************************************************
* *
* Catalog error handlers *
* *
************************************************************************/
/**
* xmlCatalogErrMemory:
* @extra: extra information
*
* Handle an out of memory condition
*/
static void
xmlCatalogErrMemory(void)
{
xmlRaiseMemoryError(NULL, NULL, NULL, XML_FROM_CATALOG, NULL);
}
/**
* xmlCatalogErr:
* @catal: the Catalog entry
* @node: the context node
* @msg: the error message
* @extra: extra information
*
* Handle a catalog error
*/
static void LIBXML_ATTR_FORMAT(4,0)
xmlCatalogErr(xmlCatalogEntryPtr catal, xmlNodePtr node, int error,
const char *msg, const xmlChar *str1, const xmlChar *str2,
const xmlChar *str3)
{
int res;
res = __xmlRaiseError(NULL, NULL, NULL, catal, node,
XML_FROM_CATALOG, error, XML_ERR_ERROR, NULL, 0,
(const char *) str1, (const char *) str2,
(const char *) str3, 0, 0,
msg, str1, str2, str3);
if (res < 0)
xmlCatalogErrMemory();
}
/************************************************************************
* *
* Allocation and Freeing *
* *
************************************************************************/
/**
* xmlNewCatalogEntry:
* @type: type of entry
* @name: name of the entry
* @value: value of the entry
* @prefer: the PUBLIC vs. SYSTEM current preference value
* @group: for members of a group, the group entry
*
* create a new Catalog entry, this type is shared both by XML and
* SGML catalogs, but the acceptable types values differs.
*
* Returns the xmlCatalogEntryPtr or NULL in case of error
*/
static xmlCatalogEntryPtr
xmlNewCatalogEntry(xmlCatalogEntryType type, const xmlChar *name,
const xmlChar *value, const xmlChar *URL, xmlCatalogPrefer prefer,
xmlCatalogEntryPtr group) {
xmlCatalogEntryPtr ret;
xmlChar *normid = NULL;
ret = (xmlCatalogEntryPtr) xmlMalloc(sizeof(xmlCatalogEntry));
if (ret == NULL) {
xmlCatalogErrMemory();
return(NULL);
}
ret->next = NULL;
ret->parent = NULL;
ret->children = NULL;
ret->type = type;
if (type == XML_CATA_PUBLIC || type == XML_CATA_DELEGATE_PUBLIC) {
normid = xmlCatalogNormalizePublic(name);
if (normid != NULL)
name = (*normid != 0 ? normid : NULL);
}
if (name != NULL)
ret->name = xmlStrdup(name);
else
ret->name = NULL;
if (normid != NULL)
xmlFree(normid);
if (value != NULL)
ret->value = xmlStrdup(value);
else
ret->value = NULL;
if (URL == NULL)
URL = value;
if (URL != NULL)
ret->URL = xmlStrdup(URL);
else
ret->URL = NULL;
ret->prefer = prefer;
ret->dealloc = 0;
ret->depth = 0;
ret->group = group;
return(ret);
}
static void
xmlFreeCatalogEntryList(xmlCatalogEntryPtr ret);
/**
* xmlFreeCatalogEntry:
* @payload: a Catalog entry
*
* Free the memory allocated to a Catalog entry
*/
static void
xmlFreeCatalogEntry(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
xmlCatalogEntryPtr ret = (xmlCatalogEntryPtr) payload;
if (ret == NULL)
return;
/*
* Entries stored in the file hash must be deallocated
* only by the file hash cleaner !
*/
if (ret->dealloc == 1)
return;
if (xmlDebugCatalogs) {
if (ret->name != NULL)
fprintf(stderr,
"Free catalog entry %s\n", ret->name);
else if (ret->value != NULL)
fprintf(stderr,
"Free catalog entry %s\n", ret->value);
else
fprintf(stderr,
"Free catalog entry\n");
}
if (ret->name != NULL)
xmlFree(ret->name);
if (ret->value != NULL)
xmlFree(ret->value);
if (ret->URL != NULL)
xmlFree(ret->URL);
xmlFree(ret);
}
/**
* xmlFreeCatalogEntryList:
* @ret: a Catalog entry list
*
* Free the memory allocated to a full chained list of Catalog entries
*/
static void
xmlFreeCatalogEntryList(xmlCatalogEntryPtr ret) {
xmlCatalogEntryPtr next;
while (ret != NULL) {
next = ret->next;
xmlFreeCatalogEntry(ret, NULL);
ret = next;
}
}
/**
* xmlFreeCatalogHashEntryList:
* @payload: a Catalog entry list
*
* Free the memory allocated to list of Catalog entries from the
* catalog file hash.
*/
static void
xmlFreeCatalogHashEntryList(void *payload,
const xmlChar *name ATTRIBUTE_UNUSED) {
xmlCatalogEntryPtr catal = (xmlCatalogEntryPtr) payload;
xmlCatalogEntryPtr children, next;
if (catal == NULL)
return;
children = catal->children;
while (children != NULL) {
next = children->next;
children->dealloc = 0;
children->children = NULL;
xmlFreeCatalogEntry(children, NULL);
children = next;
}
catal->dealloc = 0;
xmlFreeCatalogEntry(catal, NULL);
}
/**
* xmlCreateNewCatalog:
* @type: type of catalog
* @prefer: the PUBLIC vs. SYSTEM current preference value
*
* create a new Catalog, this type is shared both by XML and
* SGML catalogs, but the acceptable types values differs.
*
* Returns the xmlCatalogPtr or NULL in case of error
*/
static xmlCatalogPtr
xmlCreateNewCatalog(xmlCatalogType type, xmlCatalogPrefer prefer) {
xmlCatalogPtr ret;
ret = (xmlCatalogPtr) xmlMalloc(sizeof(xmlCatalog));
if (ret == NULL) {
xmlCatalogErrMemory();
return(NULL);
}
memset(ret, 0, sizeof(xmlCatalog));
ret->type = type;
ret->catalNr = 0;
ret->catalMax = XML_MAX_SGML_CATA_DEPTH;
ret->prefer = prefer;
if (ret->type == XML_SGML_CATALOG_TYPE)
ret->sgml = xmlHashCreate(10);
return(ret);
}
/**
* xmlFreeCatalog:
* @catal: a Catalog
*
* Free the memory allocated to a Catalog
*/
void
xmlFreeCatalog(xmlCatalogPtr catal) {
if (catal == NULL)
return;
if (catal->xml != NULL)
xmlFreeCatalogEntryList(catal->xml);
if (catal->sgml != NULL)
xmlHashFree(catal->sgml, xmlFreeCatalogEntry);
xmlFree(catal);
}
/************************************************************************
* *
* Serializing Catalogs *
* *
************************************************************************/
#ifdef LIBXML_OUTPUT_ENABLED
/**
* xmlCatalogDumpEntry:
* @entry: the catalog entry
* @out: the file.
*
* Serialize an SGML Catalog entry
*/
static void
xmlCatalogDumpEntry(void *payload, void *data,
const xmlChar *name ATTRIBUTE_UNUSED) {
xmlCatalogEntryPtr entry = (xmlCatalogEntryPtr) payload;
FILE *out = (FILE *) data;
if ((entry == NULL) || (out == NULL))
return;
switch (entry->type) {
case SGML_CATA_ENTITY:
fprintf(out, "ENTITY "); break;
case SGML_CATA_PENTITY:
fprintf(out, "ENTITY %%"); break;
case SGML_CATA_DOCTYPE:
fprintf(out, "DOCTYPE "); break;
case SGML_CATA_LINKTYPE:
fprintf(out, "LINKTYPE "); break;
case SGML_CATA_NOTATION:
fprintf(out, "NOTATION "); break;
case SGML_CATA_PUBLIC:
fprintf(out, "PUBLIC "); break;
case SGML_CATA_SYSTEM:
fprintf(out, "SYSTEM "); break;
case SGML_CATA_DELEGATE:
fprintf(out, "DELEGATE "); break;
case SGML_CATA_BASE:
fprintf(out, "BASE "); break;
case SGML_CATA_CATALOG:
fprintf(out, "CATALOG "); break;
case SGML_CATA_DOCUMENT:
fprintf(out, "DOCUMENT "); break;
case SGML_CATA_SGMLDECL:
fprintf(out, "SGMLDECL "); break;
default:
return;
}
switch (entry->type) {
case SGML_CATA_ENTITY:
case SGML_CATA_PENTITY:
case SGML_CATA_DOCTYPE:
case SGML_CATA_LINKTYPE:
case SGML_CATA_NOTATION:
fprintf(out, "%s", (const char *) entry->name); break;
case SGML_CATA_PUBLIC:
case SGML_CATA_SYSTEM:
case SGML_CATA_SGMLDECL:
case SGML_CATA_DOCUMENT:
case SGML_CATA_CATALOG:
case SGML_CATA_BASE:
case SGML_CATA_DELEGATE:
fprintf(out, "\"%s\"", entry->name); break;
default:
break;
}
switch (entry->type) {
case SGML_CATA_ENTITY:
case SGML_CATA_PENTITY:
case SGML_CATA_DOCTYPE:
case SGML_CATA_LINKTYPE:
case SGML_CATA_NOTATION:
case SGML_CATA_PUBLIC:
case SGML_CATA_SYSTEM:
case SGML_CATA_DELEGATE:
fprintf(out, " \"%s\"", entry->value); break;
default:
break;
}
fprintf(out, "\n");
}
/**
* xmlDumpXMLCatalogNode:
* @catal: top catalog entry
* @catalog: pointer to the xml tree
* @doc: the containing document
* @ns: the current namespace
* @cgroup: group node for group members
*
* Serializes a Catalog entry, called by xmlDumpXMLCatalog and recursively
* for group entries
*/
static void xmlDumpXMLCatalogNode(xmlCatalogEntryPtr catal, xmlNodePtr catalog,
xmlDocPtr doc, xmlNsPtr ns, xmlCatalogEntryPtr cgroup) {
xmlNodePtr node;
xmlCatalogEntryPtr cur;
/*
* add all the catalog entries
*/
cur = catal;
while (cur != NULL) {
if (cur->group == cgroup) {
switch (cur->type) {
case XML_CATA_REMOVED:
break;
case XML_CATA_BROKEN_CATALOG:
case XML_CATA_CATALOG:
if (cur == catal) {
if (cur->children == NULL) {
xmlFetchXMLCatalogFile(cur);
}
cur = cur->children;
continue;
}
break;
case XML_CATA_NEXT_CATALOG:
node = xmlNewDocNode(doc, ns, BAD_CAST "nextCatalog", NULL);
xmlSetProp(node, BAD_CAST "catalog", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_NONE:
break;
case XML_CATA_GROUP:
node = xmlNewDocNode(doc, ns, BAD_CAST "group", NULL);
xmlSetProp(node, BAD_CAST "id", cur->name);
if (cur->value != NULL) {
xmlNsPtr xns;
xns = xmlSearchNsByHref(doc, node, XML_XML_NAMESPACE);
if (xns != NULL)
xmlSetNsProp(node, xns, BAD_CAST "base",
cur->value);
}
switch (cur->prefer) {
case XML_CATA_PREFER_NONE:
break;
case XML_CATA_PREFER_PUBLIC:
xmlSetProp(node, BAD_CAST "prefer", BAD_CAST "public");
break;
case XML_CATA_PREFER_SYSTEM:
xmlSetProp(node, BAD_CAST "prefer", BAD_CAST "system");
break;
}
xmlDumpXMLCatalogNode(cur->next, node, doc, ns, cur);
xmlAddChild(catalog, node);
break;
case XML_CATA_PUBLIC:
node = xmlNewDocNode(doc, ns, BAD_CAST "public", NULL);
xmlSetProp(node, BAD_CAST "publicId", cur->name);
xmlSetProp(node, BAD_CAST "uri", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_SYSTEM:
node = xmlNewDocNode(doc, ns, BAD_CAST "system", NULL);
xmlSetProp(node, BAD_CAST "systemId", cur->name);
xmlSetProp(node, BAD_CAST "uri", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_REWRITE_SYSTEM:
node = xmlNewDocNode(doc, ns, BAD_CAST "rewriteSystem", NULL);
xmlSetProp(node, BAD_CAST "systemIdStartString", cur->name);
xmlSetProp(node, BAD_CAST "rewritePrefix", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_DELEGATE_PUBLIC:
node = xmlNewDocNode(doc, ns, BAD_CAST "delegatePublic", NULL);
xmlSetProp(node, BAD_CAST "publicIdStartString", cur->name);
xmlSetProp(node, BAD_CAST "catalog", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_DELEGATE_SYSTEM:
node = xmlNewDocNode(doc, ns, BAD_CAST "delegateSystem", NULL);
xmlSetProp(node, BAD_CAST "systemIdStartString", cur->name);
xmlSetProp(node, BAD_CAST "catalog", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_URI:
node = xmlNewDocNode(doc, ns, BAD_CAST "uri", NULL);
xmlSetProp(node, BAD_CAST "name", cur->name);
xmlSetProp(node, BAD_CAST "uri", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_REWRITE_URI:
node = xmlNewDocNode(doc, ns, BAD_CAST "rewriteURI", NULL);
xmlSetProp(node, BAD_CAST "uriStartString", cur->name);
xmlSetProp(node, BAD_CAST "rewritePrefix", cur->value);
xmlAddChild(catalog, node);
break;
case XML_CATA_DELEGATE_URI:
node = xmlNewDocNode(doc, ns, BAD_CAST "delegateURI", NULL);
xmlSetProp(node, BAD_CAST "uriStartString", cur->name);
xmlSetProp(node, BAD_CAST "catalog", cur->value);
xmlAddChild(catalog, node);
break;
case SGML_CATA_SYSTEM:
case SGML_CATA_PUBLIC:
case SGML_CATA_ENTITY:
case SGML_CATA_PENTITY:
case SGML_CATA_DOCTYPE:
case SGML_CATA_LINKTYPE:
case SGML_CATA_NOTATION:
case SGML_CATA_DELEGATE:
case SGML_CATA_BASE:
case SGML_CATA_CATALOG:
case SGML_CATA_DOCUMENT:
case SGML_CATA_SGMLDECL:
break;
}
}
cur = cur->next;
}
}
static int
xmlDumpXMLCatalog(FILE *out, xmlCatalogEntryPtr catal) {
int ret;
xmlDocPtr doc;
xmlNsPtr ns;
xmlDtdPtr dtd;
xmlNodePtr catalog;
xmlOutputBufferPtr buf;
/*
* Rebuild a catalog
*/
doc = xmlNewDoc(NULL);
if (doc == NULL)
return(-1);
dtd = xmlNewDtd(doc, BAD_CAST "catalog",
BAD_CAST "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN",
BAD_CAST "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd");
xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd);
ns = xmlNewNs(NULL, XML_CATALOGS_NAMESPACE, NULL);
if (ns == NULL) {
xmlFreeDoc(doc);
return(-1);
}
catalog = xmlNewDocNode(doc, ns, BAD_CAST "catalog", NULL);
if (catalog == NULL) {
xmlFreeNs(ns);
xmlFreeDoc(doc);
return(-1);
}
catalog->nsDef = ns;
xmlAddChild((xmlNodePtr) doc, catalog);
xmlDumpXMLCatalogNode(catal, catalog, doc, ns, NULL);
/*
* reserialize it
*/
buf = xmlOutputBufferCreateFile(out, NULL);
if (buf == NULL) {
xmlFreeDoc(doc);
return(-1);
}
ret = xmlSaveFormatFileTo(buf, doc, NULL, 1);
/*
* Free it
*/
xmlFreeDoc(doc);
return(ret);
}
#endif /* LIBXML_OUTPUT_ENABLED */
/************************************************************************
* *
* Converting SGML Catalogs to XML *
* *
************************************************************************/
/**
* xmlCatalogConvertEntry:
* @entry: the entry
* @catal: pointer to the catalog being converted
*
* Convert one entry from the catalog
*/
static void
xmlCatalogConvertEntry(void *payload, void *data,
const xmlChar *name ATTRIBUTE_UNUSED) {
xmlCatalogEntryPtr entry = (xmlCatalogEntryPtr) payload;
xmlCatalogPtr catal = (xmlCatalogPtr) data;
if ((entry == NULL) || (catal == NULL) || (catal->sgml == NULL) ||
(catal->xml == NULL))
return;
switch (entry->type) {
case SGML_CATA_ENTITY:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_PENTITY:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_DOCTYPE:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_LINKTYPE:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_NOTATION:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_PUBLIC:
entry->type = XML_CATA_PUBLIC;
break;
case SGML_CATA_SYSTEM:
entry->type = XML_CATA_SYSTEM;
break;
case SGML_CATA_DELEGATE:
entry->type = XML_CATA_DELEGATE_PUBLIC;
break;
case SGML_CATA_CATALOG:
entry->type = XML_CATA_CATALOG;
break;
default:
xmlHashRemoveEntry(catal->sgml, entry->name, xmlFreeCatalogEntry);
return;
}
/*
* Conversion successful, remove from the SGML catalog
* and add it to the default XML one
*/
xmlHashRemoveEntry(catal->sgml, entry->name, NULL);
entry->parent = catal->xml;
entry->next = NULL;
if (catal->xml->children == NULL)
catal->xml->children = entry;
else {
xmlCatalogEntryPtr prev;
prev = catal->xml->children;
while (prev->next != NULL)
prev = prev->next;
prev->next = entry;
}
}
/**
* xmlConvertSGMLCatalog:
* @catal: the catalog
*
* Convert all the SGML catalog entries as XML ones
*
* Returns the number of entries converted if successful, -1 otherwise
*/
int
xmlConvertSGMLCatalog(xmlCatalogPtr catal) {
if ((catal == NULL) || (catal->type != XML_SGML_CATALOG_TYPE))
return(-1);
if (xmlDebugCatalogs) {
fprintf(stderr,
"Converting SGML catalog to XML\n");
}
xmlHashScan(catal->sgml, xmlCatalogConvertEntry, &catal);
return(0);
}
/************************************************************************
* *
* Helper function *
* *
************************************************************************/
/**
* xmlCatalogUnWrapURN:
* @urn: an "urn:publicid:" to unwrap
*
* Expand the URN into the equivalent Public Identifier
*
* Returns the new identifier or NULL, the string must be deallocated
* by the caller.
*/
static xmlChar *
xmlCatalogUnWrapURN(const xmlChar *urn) {
xmlChar result[2000];
unsigned int i = 0;
if (xmlStrncmp(urn, BAD_CAST XML_URN_PUBID, sizeof(XML_URN_PUBID) - 1))
return(NULL);
urn += sizeof(XML_URN_PUBID) - 1;
while (*urn != 0) {
if (i > sizeof(result) - 4)
break;
if (*urn == '+') {
result[i++] = ' ';
urn++;
} else if (*urn == ':') {
result[i++] = '/';
result[i++] = '/';
urn++;
} else if (*urn == ';') {
result[i++] = ':';
result[i++] = ':';
urn++;
} else if (*urn == '%') {
if ((urn[1] == '2') && (urn[2] == 'B'))
result[i++] = '+';
else if ((urn[1] == '3') && (urn[2] == 'A'))
result[i++] = ':';
else if ((urn[1] == '2') && (urn[2] == 'F'))
result[i++] = '/';
else if ((urn[1] == '3') && (urn[2] == 'B'))
result[i++] = ';';
else if ((urn[1] == '2') && (urn[2] == '7'))
result[i++] = '\'';
else if ((urn[1] == '3') && (urn[2] == 'F'))
result[i++] = '?';
else if ((urn[1] == '2') && (urn[2] == '3'))
result[i++] = '#';
else if ((urn[1] == '2') && (urn[2] == '5'))
result[i++] = '%';
else {
result[i++] = *urn;
urn++;
continue;
}
urn += 3;
} else {
result[i++] = *urn;
urn++;
}
}
result[i] = 0;
return(xmlStrdup(result));
}
/**
* xmlParseCatalogFile:
* @filename: the filename
*
* parse an XML file and build a tree. It's like xmlParseFile()
* except it bypass all catalog lookups.
*
* Returns the resulting document tree or NULL in case of error
*/
xmlDocPtr
xmlParseCatalogFile(const char *filename) {
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
xmlParserInputPtr inputStream;
xmlParserInputBufferPtr buf;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL) {
xmlCatalogErrMemory();
return(NULL);
}
buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE);
if (buf == NULL) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputStream = xmlNewInputStream(ctxt);
if (inputStream == NULL) {
xmlFreeParserInputBuffer(buf);
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputStream->filename = (char *) xmlCanonicPath((const xmlChar *)filename);
inputStream->buf = buf;
xmlBufResetInput(buf->buffer, inputStream);
inputPush(ctxt, inputStream);
ctxt->valid = 0;
ctxt->validate = 0;
ctxt->loadsubset = 0;
ctxt->pedantic = 0;
ctxt->dictNames = 1;
xmlParseDocument(ctxt);
if (ctxt->wellFormed)
ret = ctxt->myDoc;
else {
ret = NULL;
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlLoadFileContent:
* @filename: a file path
*
* Load a file content into memory.
*
* Returns a pointer to the 0 terminated string or NULL in case of error
*/
static xmlChar *
xmlLoadFileContent(const char *filename)
{
#ifdef HAVE_STAT
int fd;
#else
FILE *fd;
#endif
int len;
long size;
#ifdef HAVE_STAT
struct stat info;
#endif
xmlChar *content;
if (filename == NULL)
return (NULL);
#ifdef HAVE_STAT
if (stat(filename, &info) < 0)
return (NULL);
#endif
#ifdef HAVE_STAT
if ((fd = open(filename, O_RDONLY)) < 0)
#else
if ((fd = fopen(filename, "rb")) == NULL)
#endif
{
return (NULL);
}
#ifdef HAVE_STAT
size = info.st_size;
#else
if (fseek(fd, 0, SEEK_END) || (size = ftell(fd)) == EOF || fseek(fd, 0, SEEK_SET)) { /* File operations denied? ok, just close and return failure */
fclose(fd);
return (NULL);
}
#endif
content = (xmlChar*)xmlMallocAtomic(size + 10);
if (content == NULL) {
xmlCatalogErrMemory();
#ifdef HAVE_STAT
close(fd);
#else
fclose(fd);
#endif
return (NULL);
}
#ifdef HAVE_STAT
len = read(fd, content, size);
close(fd);
#else
len = fread(content, 1, size, fd);
fclose(fd);
#endif
if (len < 0) {
xmlFree(content);
return (NULL);
}
content[len] = 0;
return(content);
}