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mapwfs11.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: OGC WFS 1.1.0 implementation. This file holds some WFS 1.1.0
* specific functions but other parts are still implemented in mapwfs.c.
* Author: Y. Assefa, DM Solutions Group ([email protected])
*
**********************************************************************
* Copyright (c) 2008, Y. Assefa, DM Solutions Group Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
****************************************************************************/
#include "mapserver.h"
#include "mapows.h"
#if defined(USE_WFS_SVR) && defined(USE_LIBXML2)
#include "maplibxml2.h"
#include "mapowscommon.h"
#include "mapogcfilter.h"
/************************************************************************/
/* msWFSException11() */
/************************************************************************/
int msWFSException11(mapObj *map, const char *locator,
const char *exceptionCode, const char *version)
{
int size = 0;
char *errorString = NULL;
char *errorMessage = NULL;
char *schemasLocation = NULL;
const char *encoding;
xmlDocPtr psDoc = NULL;
xmlNodePtr psRootNode = NULL;
xmlNsPtr psNsOws = NULL;
xmlChar *buffer = NULL;
if (version == NULL)
version = "1.1.0";
psNsOws = xmlNewNs(NULL, BAD_CAST "http://www.opengis.net/ows", BAD_CAST "ows");
encoding = msOWSLookupMetadata(&(map->web.metadata), "FO", "encoding");
errorString = msGetErrorString("\n");
errorMessage = msEncodeHTMLEntities(errorString);
schemasLocation = msEncodeHTMLEntities(msOWSGetSchemasLocation(map));
psDoc = xmlNewDoc(BAD_CAST "1.0");
psRootNode = msOWSCommonExceptionReport(psNsOws, OWS_1_0_0, schemasLocation, version, msOWSGetLanguage(map, "exception"), exceptionCode, locator, errorMessage);
xmlDocSetRootElement(psDoc, psRootNode);
xmlNewNs(psRootNode, BAD_CAST "http://www.opengis.net/ows", BAD_CAST "ows");
if (encoding)
msIO_setHeader("Content-Type","text/xml; charset=%s", encoding);
else
msIO_setHeader("Content-Type","text/xml");
msIO_sendHeaders();
xmlDocDumpFormatMemoryEnc(psDoc, &buffer, &size, (encoding ? encoding : "ISO-8859-1"), 1);
msIO_printf("%s", buffer);
/*free buffer and the document */
free(errorString);
free(errorMessage);
free(schemasLocation);
xmlFree(buffer);
xmlFreeDoc(psDoc);
xmlFreeNs(psNsOws);
/* clear error since we have already reported it */
msResetErrorList();
return MS_FAILURE;
}
/************************************************************************/
/* msWFSDumpLayer11 */
/************************************************************************/
static xmlNodePtr msWFSDumpLayer11(mapObj *map, layerObj *lp, xmlNsPtr psNsOws)
{
rectObj ext;
xmlNodePtr psRootNode, psNode;
const char *value = NULL;
const char *encoding = NULL;
char *encoded=NULL;
char *valueToFree;
char **tokens;
int n=0,i=0;
encoding = msOWSLookupMetadata(&(map->web.metadata), "FO", "encoding");
if (!encoding)
encoding = "ISO-8859-1";
psRootNode = xmlNewNode(NULL, BAD_CAST "FeatureType");
/* add namespace to layer name */
value = msOWSLookupMetadata(&(map->web.metadata), "FO", "namespace_prefix");
if(value) {
n = strlen(value)+strlen(lp->name)+1+1;
valueToFree = (char *) msSmallMalloc(sizeof(char*)*n);
snprintf(valueToFree, n, "%s%s%s", (value ? value : ""), (value ? ":" : ""), lp->name);
/*if there is an encoding using it on some of the items*/
psNode = msOWSCommonxmlNewChildEncoded(psRootNode, NULL, "Name", valueToFree, encoding);
msFree(valueToFree);
} else {
psNode = msOWSCommonxmlNewChildEncoded(psRootNode, NULL, "Name", lp->name, encoding);
}
if (lp->name && strlen(lp->name) > 0 &&
(msIsXMLTagValid(lp->name) == MS_FALSE || isdigit(lp->name[0])))
xmlAddSibling(psNode,
xmlNewComment(BAD_CAST "WARNING: The layer name '%s' might contain spaces or "
"invalid characters or may start with a number. This could lead to potential problems"));
value = msOWSLookupMetadata(&(lp->metadata), "FO", "title");
if (!value)
value =(const char*)lp->name;
psNode = msOWSCommonxmlNewChildEncoded(psRootNode, NULL, "Title", value, encoding);
value = msOWSLookupMetadata(&(lp->metadata), "FO", "abstract");
if (value)
psNode = msOWSCommonxmlNewChildEncoded(psRootNode, NULL, "Abstract", value, encoding);
value = msOWSLookupMetadata(&(lp->metadata), "FO", "keywordlist");
if (value) {
if (encoding)
encoded = msGetEncodedString(value, encoding);
else
encoded = msGetEncodedString(value, "ISO-8859-1");
msLibXml2GenerateList(
xmlNewChild(psRootNode, psNsOws, BAD_CAST "Keywords", NULL),
NULL, "Keyword", encoded, ',' );
msFree(encoded);
}
/*support DefaultSRS and OtherSRS*/
valueToFree = msOWSGetProjURN(&(map->projection),&(map->web.metadata),"FO",MS_FALSE);
if (!valueToFree)
valueToFree = msOWSGetProjURN(&(lp->projection), &(lp->metadata), "FO", MS_FALSE);
if (valueToFree) {
tokens = msStringSplit(valueToFree, ' ', &n);
if (tokens && n > 0) {
psNode = xmlNewChild(psRootNode, NULL, BAD_CAST "DefaultSRS", BAD_CAST tokens[0]);
for (i=1; i<n; i++)
psNode = xmlNewChild(psRootNode, NULL, BAD_CAST "OtherSRS", BAD_CAST tokens[i]);
msFreeCharArray(tokens, n);
}
} else
xmlAddSibling(psNode,
xmlNewComment(BAD_CAST "WARNING: Mandatory mapfile parameter: (at least one of) MAP.PROJECTION, LAYER.PROJECTION or wfs/ows_srs metadata was missing in this context."));
free(valueToFree);
valueToFree = NULL;
/*TODO: adevertize only gml3?*/
psNode = xmlNewNode(NULL, BAD_CAST "OutputFormats");
xmlAddChild(psRootNode, psNode);
{
char *formats_list = msWFSGetOutputFormatList( map, lp, "1.1.0" );
int iformat, n;
char **tokens;
n = 0;
tokens = msStringSplit(formats_list, ',', &n);
for( iformat = 0; iformat < n; iformat++ )
xmlNewChild(psNode, NULL, BAD_CAST "Format",
BAD_CAST tokens[iformat] );
msFree( formats_list );
msFreeCharArray( tokens, n );
}
/*bbox*/
if (msOWSGetLayerExtent(map, lp, "FO", &ext) == MS_SUCCESS) {
/*convert to latlong*/
if (lp->projection.numargs > 0)
msOWSProjectToWGS84(&lp->projection, &ext);
else
msOWSProjectToWGS84(&map->projection, &ext);
xmlAddChild(psRootNode,
msOWSCommonWGS84BoundingBox( psNsOws, 2,
ext.minx, ext.miny,
ext.maxx, ext.maxy));
} else {
xmlNewChild(psRootNode, psNsOws, BAD_CAST "WGS84BoundingBox", NULL);
xmlAddSibling(psNode,
xmlNewComment(BAD_CAST "WARNING: Optional WGS84BoundingBox could not be established for this layer. Consider setting the EXTENT in the LAYER object, or wfs_extent metadata. Also check that your data exists in the DATA statement"));
}
value = msOWSLookupMetadata(&(lp->metadata), "FO", "metadataurl_href");
if (value) {
psNode = xmlNewChild(psRootNode, NULL, BAD_CAST "MetadataURL", BAD_CAST value);
value = msOWSLookupMetadata(&(lp->metadata), "FO", "metadataurl_format");
if (!value)
value = msStrdup("text/html"); /* default */
xmlNewProp(psNode, BAD_CAST "format", BAD_CAST value);
value = msOWSLookupMetadata(&(lp->metadata), "FO", "metadataurl_type");
if (!value)
value = msStrdup("FGDC"); /* default */
xmlNewProp(psNode, BAD_CAST "type", BAD_CAST value);
}
return psRootNode;
}
/************************************************************************/
/* msWFSGetCapabilities11 */
/* */
/* Return the capabilities document for wfs 1.1.0 */
/************************************************************************/
int msWFSGetCapabilities11(mapObj *map, wfsParamsObj *params,
cgiRequestObj *req, owsRequestObj *ows_request)
{
xmlDocPtr psDoc = NULL; /* document pointer */
xmlNodePtr psRootNode, psMainNode, psNode, psFtNode;
const char *updatesequence=NULL;
xmlNsPtr psNsOws, psNsXLink, psNsOgc;
char *schemalocation = NULL;
char *xsi_schemaLocation = NULL;
const char *user_namespace_prefix = NULL;
const char *user_namespace_uri = NULL;
gmlNamespaceListObj *namespaceList=NULL; /* for external application schema support */
char *script_url=NULL, *formats_list;
const char *value = NULL;
const char *encoding;
xmlChar *buffer = NULL;
int size = 0, i;
msIOContext *context = NULL;
int ows_version = OWS_1_0_0;
/* -------------------------------------------------------------------- */
/* Handle updatesequence */
/* -------------------------------------------------------------------- */
updatesequence = msOWSLookupMetadata(&(map->web.metadata), "FO", "updatesequence");
encoding = msOWSLookupMetadata(&(map->web.metadata), "FO", "encoding");
if (params->pszUpdateSequence != NULL) {
i = msOWSNegotiateUpdateSequence(params->pszUpdateSequence, updatesequence);
if (i == 0) { /* current */
msSetError(MS_WFSERR, "UPDATESEQUENCE parameter (%s) is equal to server (%s)", "msWFSGetCapabilities11()", params->pszUpdateSequence, updatesequence);
return msWFSException11(map, "updatesequence", "CurrentUpdateSequence", params->pszVersion);
}
if (i > 0) { /* invalid */
msSetError(MS_WFSERR, "UPDATESEQUENCE parameter (%s) is higher than server (%s)", "msWFSGetCapabilities11()", params->pszUpdateSequence, updatesequence);
return msWFSException11(map, "updatesequence", "InvalidUpdateSequence", params->pszVersion);
}
}
/* -------------------------------------------------------------------- */
/* Create document. */
/* -------------------------------------------------------------------- */
psDoc = xmlNewDoc(BAD_CAST "1.0");
psRootNode = xmlNewNode(NULL, BAD_CAST "WFS_Capabilities");
xmlDocSetRootElement(psDoc, psRootNode);
/* -------------------------------------------------------------------- */
/* Name spaces */
/* -------------------------------------------------------------------- */
/*default name space*/
xmlNewProp(psRootNode, BAD_CAST "xmlns", BAD_CAST "http://www.opengis.net/wfs");
xmlSetNs(psRootNode, xmlNewNs(psRootNode, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml"));
xmlSetNs(psRootNode, xmlNewNs(psRootNode, BAD_CAST "http://www.opengis.net/wfs", BAD_CAST "wfs"));
psNsOws = xmlNewNs(psRootNode, BAD_CAST MS_OWSCOMMON_OWS_NAMESPACE_URI, BAD_CAST MS_OWSCOMMON_OWS_NAMESPACE_PREFIX);
psNsXLink = xmlNewNs(psRootNode, BAD_CAST MS_OWSCOMMON_W3C_XLINK_NAMESPACE_URI, BAD_CAST MS_OWSCOMMON_W3C_XLINK_NAMESPACE_PREFIX);
xmlNewNs(psRootNode, BAD_CAST MS_OWSCOMMON_W3C_XSI_NAMESPACE_URI, BAD_CAST MS_OWSCOMMON_W3C_XSI_NAMESPACE_PREFIX);
xmlNewNs(psRootNode, BAD_CAST MS_OWSCOMMON_OGC_NAMESPACE_URI, BAD_CAST MS_OWSCOMMON_OGC_NAMESPACE_PREFIX );
value = msOWSLookupMetadata(&(map->web.metadata), "FO", "namespace_uri");
if(value) user_namespace_uri = value;
value = msOWSLookupMetadata(&(map->web.metadata), "FO", "namespace_prefix");
if(value) user_namespace_prefix = value;
if(user_namespace_prefix != NULL && msIsXMLTagValid(user_namespace_prefix) == MS_FALSE)
msIO_printf("<!-- WARNING: The value '%s' is not valid XML namespace. -->\n", user_namespace_prefix);
else
xmlNewNs(psRootNode, BAD_CAST user_namespace_uri, BAD_CAST user_namespace_prefix);
/* any additional namespaces */
namespaceList = msGMLGetNamespaces(&(map->web), "G");
for(i=0; i<namespaceList->numnamespaces; i++) {
if(namespaceList->namespaces[i].uri) {
xmlNewNs(psRootNode, BAD_CAST namespaceList->namespaces[i].uri, BAD_CAST namespaceList->namespaces[i].prefix);
}
}
msGMLFreeNamespaces(namespaceList);
xmlNewProp(psRootNode, BAD_CAST "version", BAD_CAST params->pszVersion );
updatesequence = msOWSLookupMetadata(&(map->web.metadata), "FO", "updatesequence");
if (updatesequence)
xmlNewProp(psRootNode, BAD_CAST "updateSequence", BAD_CAST updatesequence);
/*schema*/
schemalocation = msEncodeHTMLEntities( msOWSGetSchemasLocation(map) );
xsi_schemaLocation = msStrdup("http://www.opengis.net/wfs");
xsi_schemaLocation = msStringConcatenate(xsi_schemaLocation, " ");
xsi_schemaLocation = msStringConcatenate(xsi_schemaLocation, schemalocation);
xsi_schemaLocation = msStringConcatenate(xsi_schemaLocation, "/wfs/1.1.0/wfs.xsd");
xmlNewNsProp(psRootNode, NULL, BAD_CAST "xsi:schemaLocation", BAD_CAST xsi_schemaLocation);
/* -------------------------------------------------------------------- */
/* Service metadata. */
/* -------------------------------------------------------------------- */
xmlAddChild(psRootNode,
msOWSCommonServiceIdentification(psNsOws, map, "OGC WFS", params->pszVersion, "FO"));
/*service provider*/
xmlAddChild(psRootNode, msOWSCommonServiceProvider(
psNsOws, psNsXLink, map, "FO"));
/*operation metadata */
if ((script_url=msOWSGetOnlineResource(map, "FO", "onlineresource", req)) == NULL) {
msSetError(MS_WFSERR, "Server URL not found", "msWFSGetCapabilities11()");
return msWFSException11(map, "mapserv", "NoApplicableCode", params->pszVersion);
}
/* -------------------------------------------------------------------- */
/* Operations metadata. */
/* -------------------------------------------------------------------- */
psMainNode= xmlAddChild(psRootNode,msOWSCommonOperationsMetadata(psNsOws));
/* -------------------------------------------------------------------- */
/* GetCapabilities */
/* -------------------------------------------------------------------- */
psNode = xmlAddChild(psMainNode,
msOWSCommonOperationsMetadataOperation(psNsOws,psNsXLink,"GetCapabilities",
OWS_METHOD_GETPOST, script_url));
xmlAddChild(psMainNode, psNode);
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(
ows_version, psNsOws, "Parameter", "service", "WFS"));
/*accept version*/
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Parameter", "AcceptVersions",
"1.0.0,1.1.0"));
/*format*/
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Parameter", "AcceptFormats",
"text/xml"));
/* -------------------------------------------------------------------- */
/* DescribeFeatureType */
/* -------------------------------------------------------------------- */
if (msOWSRequestIsEnabled(map, NULL, "F", "DescribeFeatureType", MS_TRUE)) {
psNode = xmlAddChild(psMainNode,
msOWSCommonOperationsMetadataOperation(psNsOws,psNsXLink,"DescribeFeatureType",
OWS_METHOD_GETPOST, script_url));
xmlAddChild(psMainNode, psNode);
/*output format*/
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Parameter", "outputFormat",
"XMLSCHEMA,text/xml; subtype=gml/2.1.2,text/xml; subtype=gml/3.1.1"));
}
/* -------------------------------------------------------------------- */
/* GetFeature */
/* -------------------------------------------------------------------- */
if (msOWSRequestIsEnabled(map, NULL, "F", "GetFeature", MS_TRUE)) {
psNode = xmlAddChild(psMainNode,
msOWSCommonOperationsMetadataOperation(psNsOws,psNsXLink,"GetFeature",
OWS_METHOD_GETPOST, script_url));
xmlAddChild(psMainNode, psNode);
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Parameter", "resultType",
"results,hits"));
formats_list = msWFSGetOutputFormatList( map, NULL, "1.1.0" );
xmlAddChild(psNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Parameter", "outputFormat",
formats_list));
msFree( formats_list );
value = msOWSLookupMetadata(&(map->web.metadata), "FO", "maxfeatures");
if (value) {
xmlAddChild(psMainNode, msOWSCommonOperationsMetadataDomainType(ows_version, psNsOws,
"Constraint", "DefaultMaxFeatures",
(char *)value));
}
}
/* -------------------------------------------------------------------- */
/* FeatureTypeList */
/* -------------------------------------------------------------------- */
psFtNode = xmlNewNode(NULL, BAD_CAST "FeatureTypeList");
xmlAddChild(psRootNode, psFtNode);
psNode = xmlNewChild(psFtNode, NULL, BAD_CAST "Operations", NULL);
xmlNewChild(psNode, NULL, BAD_CAST "Operation", BAD_CAST "Query");
for(i=0; i<map->numlayers; i++) {
layerObj *lp;
lp = GET_LAYER(map, i);
if (!msIntegerInArray(lp->index, ows_request->enabled_layers, ows_request->numlayers))
continue;
/* List only vector layers in which DUMP=TRUE */
if (msWFSIsLayerSupported(lp))
xmlAddChild(psFtNode, msWFSDumpLayer11(map, lp, psNsOws));
}
/* -------------------------------------------------------------------- */
/* Filter capabilities. */
/* -------------------------------------------------------------------- */
psNsOgc = xmlNewNs(NULL, BAD_CAST MS_OWSCOMMON_OGC_NAMESPACE_URI, BAD_CAST MS_OWSCOMMON_OGC_NAMESPACE_PREFIX);
xmlAddChild(psRootNode, FLTGetCapabilities(psNsOgc, psNsOgc, MS_FALSE));
/* -------------------------------------------------------------------- */
/* Write out the document. */
/* -------------------------------------------------------------------- */
if( msIO_needBinaryStdout() == MS_FAILURE )
return MS_FAILURE;
if (encoding)
msIO_setHeader("Content-Type","text/xml; charset=%s", encoding);
else
msIO_setHeader("Content-Type","text/xml");
msIO_sendHeaders();
context = msIO_getHandler(stdout);
xmlDocDumpFormatMemoryEnc(psDoc, &buffer, &size, (encoding ? encoding : "ISO-8859-1"), 1);
msIO_contextWrite(context, buffer, size);
xmlFree(buffer);
/*free buffer and the document */
/*xmlFree(buffer);*/
xmlFreeDoc(psDoc);
xmlFreeNs(psNsOgc);
free(script_url);
free(xsi_schemaLocation);
free(schemalocation);
xmlCleanupParser();
return(MS_SUCCESS);
}
#endif /*defined(USE_WFS_SVR) && defined(USE_LIBXML2)*/
#if defined(USE_WFS_SVR) && !defined(USE_LIBXML2)
int msWFSGetCapabilities11(mapObj *map, wfsParamsObj *params,
cgiRequestObj *req, owsRequestObj *ows_request)
{
msSetError( MS_WFSERR,
"WFS 1.1 request made, but mapserver requires libxml2 for WFS 1.1 services and this is not configured.",
"msWFSGetCapabilities11()", "NoApplicableCode" );
return msWFSException11(map, "mapserv", "NoApplicableCode", params->pszVersion);
}
int msWFSException11(mapObj *map, const char *locator, const char *exceptionCode, const char *version)
{
/* fallback to reporting using 1.0 style exceptions. */
return msWFSException( map, locator, exceptionCode, "1.0.0" );
}
#endif /* defined(USE_WFS_SVR) && !defined(USE_LIBXML2) */