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mapwfs.c
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mapwfs.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: WFS server implementation
* Author: Daniel Morissette, DM Solutions Group (morissette@dmsolutions.ca)
*
**********************************************************************
* Copyright (c) 2002, Daniel Morissette, DM Solutions Group Inc
* Copyright (c) 2013, Even Rouault
*
* 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)
/* There is a dependency to GDAL/OGR for the GML driver and MiniXML parser */
#include "cpl_minixml.h"
#include "cpl_conv.h"
#include "cpl_string.h"
#include "mapogcfilter.h"
#include "mapowscommon.h"
#include "maptemplate.h"
#if defined(USE_LIBXML2)
#include "maplibxml2.h"
#endif
#ifdef USE_OGR
static int msWFSAnalyzeStoredQuery(mapObj* map,
wfsParamsObj *wfsparams,
const char* id,
const char* pszResolvedQuery);
#endif
static void msWFSSimplifyPropertyNameAndFilter(wfsParamsObj *wfsparams);
static void msWFSAnalyzeStartIndexAndFeatureCount(mapObj *map, const wfsParamsObj *paramsObj,
int *pmaxfeatures, int* pstartindex);
static int msWFSRunBasicGetFeature(mapObj* map,
layerObj* lp,
const wfsParamsObj *paramsObj,
int nWFSVersion);
/* Must be sorted from more recent to older one */
static const int wfsSupportedVersions[] = {OWS_2_0_0, OWS_1_1_0, OWS_1_0_0};
static const char* const wfsSupportedVersionsStr[] = { "2.0.0", "1.1.0", "1.0.0" };
static const int wfsNumSupportedVersions =
(int)(sizeof(wfsSupportedVersions)/sizeof(wfsSupportedVersions[0]));
static const char* const wfsUnsupportedOperations[] = { "GetFeatureWithLock",
"LockFeature",
"Transaction",
"CreateStoredQuery",
"DropStoredQuery" };
static const int wfsNumUnsupportedOperations =
(int)(sizeof(wfsUnsupportedOperations)/sizeof(wfsUnsupportedOperations[0]));
#define WFS_LATEST_VERSION wfsSupportedVersionsStr[0]
/* Supported DescribeFeature formats */
typedef enum
{
OWS_DEFAULT_SCHEMA, /* basically a GML 2.1 schema */
OWS_SFE_SCHEMA, /* GML for simple feature exchange (formerly GML3L0) */
OWS_GML32_SFE_SCHEMA /* GML 3.2 Simple Features Level 0 */
} WFSSchemaVersion;
/*
** msWFSGetIndexUnsupportedOperation()
**
** Return index of pszOp in wfsUnsupportedOperations, or -1 otherwise
*/
static int msWFSGetIndexUnsupportedOperation(const char* pszOp)
{
int i;
for(i = 0; i < wfsNumUnsupportedOperations; i++ )
{
if( strcasecmp(wfsUnsupportedOperations[i], pszOp) == 0 )
return i;
}
return -1;
}
static
const char *msWFSGetDefaultVersion(mapObj *map);
/*
** msWFSException()
**
** Report current MapServer error in XML exception format.
*/
static
int msWFSExceptionInternal(mapObj *map, const char *locator, const char *code,
const char *version, int locatorShouldBeNull )
{
char *schemalocation = NULL;
/* In WFS, exceptions are always XML.
*/
if( version == NULL )
version = msWFSGetDefaultVersion(map);
if( msOWSParseVersionString(version) >= OWS_2_0_0 )
return msWFSException20( map, (locatorShouldBeNull) ? NULL : locator, code );
if( msOWSParseVersionString(version) >= OWS_1_1_0 )
return msWFSException11( map, (locatorShouldBeNull) ? NULL : locator, code, version );
msIO_setHeader("Content-Type","text/xml; charset=UTF-8");
msIO_sendHeaders();
msIO_printf("<?xml version='1.0' encoding=\"UTF-8\" ?>\n");
msIO_printf("<ServiceExceptionReport ");
msIO_printf("version=\"1.2.0\" ");
msIO_printf("xmlns=\"http://www.opengis.net/ogc\" ");
msIO_printf("xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ");
schemalocation = msEncodeHTMLEntities(msOWSGetSchemasLocation(map));
msIO_printf("xsi:schemaLocation=\"http://www.opengis.net/ogc %s/wfs/1.0.0/OGC-exception.xsd\">\n", schemalocation);
free(schemalocation);
msIO_printf(" <ServiceException code=\"%s\" locator=\"%s\">\n", code, locator);
/* Optional <Locator> element currently unused. */
/* msIO_printf(" <Message>\n"); */
msWriteErrorXML(stdout);
/* msIO_printf(" </Message>\n"); */
msIO_printf(" </ServiceException>\n");
msIO_printf("</ServiceExceptionReport>\n");
return MS_FAILURE; /* so we can call 'return msWFSException();' anywhere */
}
int msWFSException(mapObj *map, const char *locator, const char *code,
const char *version )
{
return msWFSExceptionInternal(map, locator, code, version, FALSE);
}
/*
** msWFSExceptionNoLocator()
**
** Report current MapServer error in XML exception format.
** For WFS >= 1.1.0, the locator will be ignored. It will be just used
** for legacy WFS 1.0 exceptions.
*/
static
int msWFSExceptionNoLocator(mapObj *map, const char *locator, const char *code,
const char *version )
{
return msWFSExceptionInternal(map, locator, code, version, TRUE);
}
/*
** Helper function to build a list of output formats.
**
** Given a layer it will return all formats valid for that layer, otherwise
** all formats permitted on layers in the map are returned. The string
** returned should be freed by the caller.
*/
char *msWFSGetOutputFormatList(mapObj *map, layerObj *layer, int nWFSVersion )
{
int i, got_map_list = 0;
static const int out_list_size = 20000;
char *out_list = (char*) msSmallCalloc(1,out_list_size);
if( nWFSVersion == OWS_1_0_0 )
strcpy(out_list,"GML2");
else if( nWFSVersion == OWS_1_1_0 )
strcpy(out_list,"text/xml; subtype=gml/3.1.1");
else
strcpy(out_list,"application/gml+xml; version=3.2,"
"text/xml; subtype=gml/3.2.1,"
"text/xml; subtype=gml/3.1.1,"
"text/xml; subtype=gml/2.1.2");
for( i = 0; i < map->numlayers; i++ ) {
const char *format_list;
layerObj *lp;
int j, n;
char **tokens;
lp = GET_LAYER(map, i);
if( layer != NULL && layer != lp )
continue;
format_list = msOWSLookupMetadata(&(lp->metadata),
"F","getfeature_formatlist");
if( format_list == NULL && !got_map_list ) {
format_list = msOWSLookupMetadata(&(map->web.metadata),
"F","getfeature_formatlist");
got_map_list = 1;
}
if( format_list == NULL )
continue;
n = 0;
tokens = msStringSplit(format_list, ',', &n);
for( j = 0; j < n; j++ ) {
int iformat;
const char *fname, *hit;
outputFormatObj *format_obj;
msStringTrim( tokens[j] );
iformat = msGetOutputFormatIndex(map,tokens[j]);
if( iformat < 0 )
continue;
format_obj = map->outputformatlist[iformat];
fname = format_obj->name;
if( nWFSVersion >= OWS_1_1_0
&& format_obj->mimetype != NULL )
fname = format_obj->mimetype;
hit = strstr(out_list,fname);
if( hit != NULL
&& (hit[strlen(fname)] == '\0' || hit[strlen(fname)] == ','))
continue;
if( strlen(out_list) + strlen(fname)+3 < out_list_size ) {
strcat( out_list, "," );
strcat( out_list, fname );
} else
break;
}
msFreeCharArray( tokens, n );
}
return out_list;
}
/*
**
*/
static void msWFSPrintRequestCap(const char *wmtver, const char *request,
const char *script_url,
const char *format_tag,
const char *formats_list)
{
msIO_printf(" <%s>\n", request);
/* We expect to receive a NULL-terminated args list of formats */
if (format_tag != NULL) {
int i, n;
char **tokens;
n = 0;
tokens = msStringSplit(formats_list, ',', &n);
msIO_printf(" <%s>\n", format_tag);
for( i = 0; i < n; i++ ) {
msIO_printf(" <%s/>\n", tokens[i] );
}
msFreeCharArray( tokens, n );
msIO_printf(" </%s>\n", format_tag);
}
msIO_printf(" <DCPType>\n");
msIO_printf(" <HTTP>\n");
msIO_printf(" <Get onlineResource=\"%s\" />\n", script_url);
msIO_printf(" </HTTP>\n");
msIO_printf(" </DCPType>\n");
msIO_printf(" <DCPType>\n");
msIO_printf(" <HTTP>\n");
msIO_printf(" <Post onlineResource=\"%s\" />\n", script_url);
msIO_printf(" </HTTP>\n");
msIO_printf(" </DCPType>\n");
msIO_printf(" </%s>\n", request);
}
/* msWFSLocateSRSInList()
**
** Utility function to check if a space separated list contains the one passed in argument.
** The list comes normaly from ows_srs metadata, and is expected to use the simple EPSG notation
** (EPSG:4326 ESPG:42304 ...). The srs comes from the query string and can either
** be of simple EPSG format or using gc:def:crs:EPSG:xxx format
*/
int msWFSLocateSRSInList(const char *pszList, const char *srs)
{
int nTokens,i;
char **tokens = NULL;
int bFound = MS_FALSE;
char epsg_string[100];
const char *code;
if (!pszList || !srs)
return MS_FALSE;
if (strncasecmp(srs, "EPSG:",5) == 0)
code = srs+5;
else if (strncasecmp(srs, "urn:ogc:def:crs:EPSG:",21) == 0) {
if (srs[21] == ':')
code = srs+21;
else
code = srs+20;
while( *code != ':' && *code != '\0')
code++;
if( *code == ':' )
code++;
} else if (strncasecmp(srs, "urn:EPSG:geographicCRS:",23) == 0)
code = srs + 23;
else
return MS_FALSE;
snprintf( epsg_string, sizeof(epsg_string), "EPSG:%s", code );
tokens = msStringSplit(pszList, ' ', &nTokens );
if (tokens && nTokens > 0) {
for (i=0; i<nTokens; i++) {
if (strcasecmp(tokens[i], epsg_string) == 0) {
bFound = MS_TRUE;
break;
}
}
}
msFreeCharArray(tokens, nTokens);
return bFound;
}
/* msWFSGetFeatureApplySRS()
**
** Utility function called from msWFSGetFeature. It is assumed that at this point
** all queried layers are turned ON
*/
static int msWFSGetFeatureApplySRS(mapObj *map, const char *srs, int nWFSVersion)
{
const char *pszLayerSRS=NULL;
const char *pszMapSRS=NULL;
char *pszOutputSRS=NULL;
layerObj *lp;
int i;
/*validation of SRS
- wfs 1.0 does not have an srsname parameter so all queried layers should be advertized using the
same srs. For wfs 1.1.0 an srsName can be passed, we should validate that It is valid for all
queries layers
*/
/* Start by applying the default service SRS to the mapObj,
* make sure we reproject the map extent if a projection was
* already set
*/
pszMapSRS = msOWSGetEPSGProj(&(map->projection), &(map->web.metadata), "FO", MS_TRUE);
if(pszMapSRS && nWFSVersion > OWS_1_0_0){
projectionObj proj;
msInitProjection(&proj);
if (map->projection.numargs > 0 && msLoadProjectionStringEPSG(&proj, pszMapSRS) == 0) {
msProjectRect(&(map->projection), &proj, &map->extent);
}
msLoadProjectionStringEPSG(&(map->projection), pszMapSRS);
msFreeProjection(&proj);
}
if (srs == NULL || nWFSVersion == OWS_1_0_0) {
for (i=0; i<map->numlayers; i++) {
lp = GET_LAYER(map, i);
if (lp->status != MS_ON)
continue;
if (pszMapSRS)
pszLayerSRS = pszMapSRS;
else
pszLayerSRS = msOWSGetEPSGProj(&(lp->projection), &(lp->metadata), "FO", MS_TRUE);
if (pszLayerSRS == NULL) {
msSetError(MS_WFSERR,
"Server config error: SRS must be set at least at the map or at the layer level.",
"msWFSGetFeature()");
if (pszOutputSRS)
msFree(pszOutputSRS);
return MS_FAILURE;
}
if (pszOutputSRS == NULL)
pszOutputSRS = msStrdup(pszLayerSRS);
else if (strcasecmp(pszLayerSRS,pszOutputSRS) != 0) {
msSetError(MS_WFSERR,
"Invalid GetFeature Request: All TYPENAMES in a single GetFeature request must have been advertized in the same SRS. Please check the capabilities and reformulate your request.",
"msWFSGetFeature()");
if (pszOutputSRS)
msFree(pszOutputSRS);
return MS_FAILURE;
}
}
} else { /*srs is given so it should be valid for all layers*/
/*get all the srs defined at the map level and check them aginst the srsName passed
as argument*/
pszMapSRS = msOWSGetEPSGProj(&(map->projection), &(map->web.metadata), "FO", MS_FALSE);
if (pszMapSRS) {
if (!msWFSLocateSRSInList(pszMapSRS, srs)) {
msSetError(MS_WFSERR,
"Invalid GetFeature Request:Invalid SRS. Please check the capabilities and reformulate your request.",
"msWFSGetFeature()");
return MS_FAILURE;
}
pszOutputSRS = msStrdup(srs);
} else {
for (i=0; i<map->numlayers; i++) {
lp = GET_LAYER(map, i);
if (lp->status != MS_ON)
continue;
pszLayerSRS = msOWSGetEPSGProj(&(lp->projection), &(lp->metadata), "FO", MS_FALSE);
if (!pszLayerSRS) {
msSetError(MS_WFSERR,
"Server config error: SRS must be set at least at the map or at the layer level.",
"msWFSGetFeature()");
return MS_FAILURE;
}
if (!msWFSLocateSRSInList(pszLayerSRS, srs)) {
msSetError(MS_WFSERR,
"Invalid GetFeature Request:Invalid SRS. Please check the capabilities and reformulate your request.",
"msWFSGetFeature()");
return MS_FAILURE;
}
}
pszOutputSRS = msStrdup(srs);
}
}
if (pszOutputSRS) {
projectionObj sProjTmp;
int nTmp=0;
msInitProjection(&sProjTmp);
if( nWFSVersion >= OWS_1_1_0 ) {
nTmp = msLoadProjectionStringEPSG(&(sProjTmp), pszOutputSRS);
} else {
nTmp = msLoadProjectionString(&(sProjTmp), pszOutputSRS);
}
if (nTmp == 0) {
msProjectRect(&(map->projection), &(sProjTmp), &map->extent);
}
msFreeProjection(&(sProjTmp));
if (nTmp != 0) {
msSetError(MS_WFSERR, "msLoadProjectionString() failed", "msWFSGetFeature()");
return MS_FAILURE;
}
/*we load the projection sting in the map and possibly
set the axis order*/
if( nWFSVersion >= OWS_1_1_0 ) {
msLoadProjectionStringEPSG(&(map->projection), pszOutputSRS);
} else {
msLoadProjectionString(&(map->projection), pszOutputSRS);
}
}
if (pszOutputSRS)
msFree(pszOutputSRS);
return MS_SUCCESS;
}
/* msWFSIsLayerSupported()
**
** Returns true (1) is this layer meets the requirements to be served as
** a WFS feature type.
*/
int msWFSIsLayerSupported(layerObj *lp)
{
/* In order to be supported, lp->type must be specified, even for
** layers that are OGR, SDE, SDO, etc connections.
*/
if ((lp->type == MS_LAYER_POINT ||
lp->type == MS_LAYER_LINE ||
lp->type == MS_LAYER_POLYGON ) &&
lp->connectiontype != MS_WMS &&
lp->connectiontype != MS_GRATICULE) {
return 1; /* true */
}
return 0; /* false */
}
static int msWFSIsLayerAllowed(layerObj *lp, owsRequestObj *ows_request)
{
return msWFSIsLayerSupported(lp) &&
(msIntegerInArray(lp->index, ows_request->enabled_layers, ows_request->numlayers));
}
static layerObj* msWFSGetLayerByName(mapObj* map, owsRequestObj *ows_request, const char* name)
{
int j;
for (j=0; j<map->numlayers; j++) {
layerObj *lp;
lp = GET_LAYER(map, j);
if (msWFSIsLayerAllowed(lp, ows_request) && lp->name && (strcasecmp(lp->name, name) == 0)) {
return lp;
}
}
return NULL;
}
/*
** msWFSDumpLayer()
*/
int msWFSDumpLayer(mapObj *map, layerObj *lp)
{
rectObj ext;
const char *pszWfsSrs = NULL;
projectionObj poWfs;
msIO_printf(" <FeatureType>\n");
if (lp->name && strlen(lp->name) > 0 &&
(msIsXMLTagValid(lp->name) == MS_FALSE || isdigit(lp->name[0])))
msIO_fprintf(stdout, "<!-- WARNING: The layer name '%s' might contain spaces or "
"invalid characters or may start with a number. This could lead to potential problems. -->\n",lp->name);
msOWSPrintEncodeParam(stdout, "LAYER.NAME", lp->name, OWS_WARN,
" <Name>%s</Name>\n", NULL);
msOWSPrintEncodeMetadata(stdout, &(lp->metadata), "FO", "title",
OWS_WARN, " <Title>%s</Title>\n", lp->name);
msOWSPrintEncodeMetadata(stdout, &(lp->metadata), "FO", "abstract",
OWS_NOERR, " <Abstract>%s</Abstract>\n", NULL);
msOWSPrintEncodeMetadataList(stdout, &(lp->metadata), "FO",
"keywordlist",
" <Keywords>\n",
" </Keywords>\n",
" %s\n", NULL);
/* In WFS, every layer must have exactly one SRS and there is none at */
/* the top level contrary to WMS */
/* */
/* So here is the way we'll deal with SRS: */
/* 1- If a top-level map projection (or wfs_srs metadata) is set then */
/* all layers are advertized in the map's projection and they will */
/* be reprojected on the fly in the GetFeature request. */
/* 2- If there is no top-level map projection (or wfs_srs metadata) then */
/* each layer is advertized in its own projection as defined in the */
/* layer's projection object or wfs_srs metadata. */
/* */
if (msOWSGetEPSGProj(&(map->projection),&(map->web.metadata),"FO",MS_TRUE) != NULL) {
/* Map has a SRS. Use it for all layers. */
pszWfsSrs = msOWSGetEPSGProj(&(map->projection),&(map->web.metadata), "FO", MS_TRUE);
} else {
/* Map has no SRS. Use layer SRS or produce a warning. */
pszWfsSrs = msOWSGetEPSGProj(&(lp->projection),&(lp->metadata), "FO", MS_TRUE);
}
msOWSPrintEncodeParam(stdout, "(at least one of) MAP.PROJECTION, LAYER.PROJECTION or wfs_srs metadata",
pszWfsSrs, OWS_WARN, " <SRS>%s</SRS>\n", NULL);
/* If layer has no proj set then use map->proj for bounding box. */
if (msOWSGetLayerExtent(map, lp, "FO", &ext) == MS_SUCCESS) {
msInitProjection(&poWfs);
if (pszWfsSrs != NULL)
msLoadProjectionString(&(poWfs), pszWfsSrs);
if(lp->projection.numargs > 0) {
msOWSPrintLatLonBoundingBox(stdout, " ", &(ext),
&(lp->projection), &(poWfs), OWS_WFS);
} else {
msOWSPrintLatLonBoundingBox(stdout, " ", &(ext),
&(map->projection), &(poWfs), OWS_WFS);
}
msFreeProjection(&poWfs);
} else {
msIO_printf("<!-- WARNING: Optional LatLongBoundingBox 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 -->\n");
}
msOWSPrintURLType(stdout, &(lp->metadata), "FO", "metadataurl",
OWS_NOERR, NULL, "MetadataURL", " type=\"%s\"",
NULL, NULL, " format=\"%s\"", "%s",
MS_TRUE, MS_FALSE, MS_FALSE, MS_TRUE, MS_TRUE,
NULL, NULL, NULL, NULL, NULL, " ");
if (msOWSLookupMetadata(&(lp->metadata), "OFG", "featureid") == NULL) {
msIO_fprintf(stdout, "<!-- WARNING: Required Feature Id attribute (fid) not specified for this feature type. Make sure you set one of wfs_featureid, ows_featureid or gml_featureid metadata. -->\n");
}
msIO_printf(" </FeatureType>\n");
return MS_SUCCESS;
}
/*
** msWFSHandleUpdateSequence()
*/
int msWFSHandleUpdateSequence(mapObj *map, wfsParamsObj *params, const char* pszFunction)
{
/* -------------------------------------------------------------------- */
/* Handle updatesequence */
/* -------------------------------------------------------------------- */
const char* updatesequence = msOWSLookupMetadata(&(map->web.metadata), "FO", "updatesequence");
if (params->pszUpdateSequence != NULL) {
int i = msOWSNegotiateUpdateSequence(params->pszUpdateSequence, updatesequence);
if (i == 0) { /* current */
msSetError(MS_WFSERR, "UPDATESEQUENCE parameter (%s) is equal to server (%s)", pszFunction, params->pszUpdateSequence, updatesequence);
/* FIXME? : according to table 7 of OWS 1.1, we should return a service */
/* metadata document with only “version” and “updateSequence” parameters */
return msWFSException(map, "updatesequence", "CurrentUpdateSequence", params->pszVersion);
}
if (i > 0) { /* invalid */
msSetError(MS_WFSERR, "UPDATESEQUENCE parameter (%s) is higher than server (%s)", pszFunction, params->pszUpdateSequence, updatesequence);
/* locator must be NULL. See Table 25 of OWS 1.1 */
return msWFSExceptionNoLocator(map, "updatesequence", MS_OWS_ERROR_INVALID_UPDATE_SEQUENCE, params->pszVersion);
}
}
return MS_SUCCESS;
}
/*
** msWFSGetCapabilitiesNegotiateVersion()
*/
static int msWFSGetCapabilitiesNegotiateVersion(mapObj *map, wfsParamsObj *wfsparams)
{
int iVersion = -1;
char tmpString[OWS_VERSION_MAXLEN];
/* acceptversions: do OWS Common style of version negotiation */
if (wfsparams->pszAcceptVersions && strlen(wfsparams->pszAcceptVersions) > 0) {
char **tokens;
int i, j;
tokens = msStringSplit(wfsparams->pszAcceptVersions, ',', &j);
for (i=0; i<j; i++) {
iVersion = msOWSParseVersionString(tokens[i]);
if (iVersion < 0) {
msSetError(MS_WFSERR, "Invalid version format : %s.", "msWFSGetCapabilities()", tokens[i]);
msFreeCharArray(tokens, j);
return msWFSException(map, "acceptversions", MS_OWS_ERROR_INVALID_PARAMETER_VALUE,NULL);
}
/* negotiate version */
iVersion = msOWSCommonNegotiateVersion(iVersion, wfsSupportedVersions, wfsNumSupportedVersions);
if (iVersion != -1)
break;
}
msFreeCharArray(tokens, j);
if(iVersion == -1) {
msSetError(MS_WFSERR, "ACCEPTVERSIONS list (%s) does not match supported versions", "msWFSGetCapabilities()", wfsparams->pszAcceptVersions);
/* locator must be NULL. See Table 25 of OWS 1.1 */
return msWFSExceptionNoLocator(map, "acceptversions", MS_OWS_ERROR_VERSION_NEGOTIATION_FAILED,NULL);
}
} else {
/* negotiate version */
int tmpInt;
iVersion = msOWSParseVersionString(wfsparams->pszVersion);
if( iVersion < 0 )
{
return msWFSException(map, "version", MS_OWS_ERROR_INVALID_PARAMETER_VALUE, NULL);
}
tmpInt = msOWSCommonNegotiateVersion(iVersion, wfsSupportedVersions, wfsNumSupportedVersions);
/* Old style negociation : paragraph D.11 of OWS 1.1.0 spec */
if( tmpInt < 0 )
{
int i;
for( i = 0 ; i < wfsNumSupportedVersions; i++ )
{
if( iVersion >= wfsSupportedVersions[i] )
{
iVersion = wfsSupportedVersions[i];
break;
}
}
if( i == wfsNumSupportedVersions )
iVersion = wfsSupportedVersions[wfsNumSupportedVersions - 1];
}
}
/* set result as string and carry on */
if (wfsparams->pszVersion)
msFree(wfsparams->pszVersion);
wfsparams->pszVersion = msStrdup(msOWSGetVersionString(iVersion, tmpString));
return MS_SUCCESS;
}
/*
** msWFSGetCapabilities()
*/
int msWFSGetCapabilities(mapObj *map, wfsParamsObj *wfsparams, cgiRequestObj *req, owsRequestObj *ows_request)
{
char *script_url=NULL, *script_url_encoded;
const char *updatesequence=NULL;
const char *wmtver=NULL;
char *formats_list;
int ret;
int iVersion;
int i=0;
ret = msWFSGetCapabilitiesNegotiateVersion(map, wfsparams);
if( ret != MS_SUCCESS )
return ret;
iVersion = msOWSParseVersionString(wfsparams->pszVersion);
if( iVersion == OWS_2_0_0 )
return msWFSGetCapabilities20( map, wfsparams, req, ows_request);
if( iVersion == OWS_1_1_0 )
return msWFSGetCapabilities11( map, wfsparams, req, ows_request);
/* Decide which version we're going to return... only 1.0.0 for now */
wmtver = "1.0.0";
/* We need this server's onlineresource. */
if ((script_url=msOWSGetOnlineResource(map, "FO", "onlineresource", req)) == NULL ||
(script_url_encoded = msEncodeHTMLEntities(script_url)) == NULL) {
msSetError(MS_WFSERR, "Server URL not found", "msWFSGetCapabilities()");
return msWFSException(map, "mapserv", MS_OWS_ERROR_NO_APPLICABLE_CODE, wmtver);
}
free(script_url);
script_url = NULL;
ret = msWFSHandleUpdateSequence(map, wfsparams, "msWFSGetCapabilities()");
if( ret != MS_SUCCESS )
{
free(script_url_encoded);
return ret;
}
msIO_setHeader("Content-Type","text/xml; charset=UTF-8");
msIO_sendHeaders();
msIO_printf("<?xml version='1.0' encoding=\"UTF-8\" ?>\n");
updatesequence = msOWSLookupMetadata(&(map->web.metadata), "FO", "updatesequence");
msIO_printf("<WFS_Capabilities \n"
" version=\"%s\" \n"
" updateSequence=\"%s\" \n"
" xmlns=\"http://www.opengis.net/wfs\" \n"
" xmlns:ogc=\"http://www.opengis.net/ogc\" \n"
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
" xsi:schemaLocation=\"http://www.opengis.net/wfs %s/wfs/%s/WFS-capabilities.xsd\">\n",
wmtver, updatesequence ? updatesequence : "0",
msOWSGetSchemasLocation(map), wmtver);
/* Report MapServer Version Information */
msIO_printf("\n<!-- %s -->\n\n", msGetVersion());
/*
** SERVICE definition
*/
msIO_printf("<Service>\n");
msIO_printf(" <Name>MapServer WFS</Name>\n");
/* the majority of this section is dependent on appropriately named metadata in the WEB object */
msOWSPrintEncodeMetadata(stdout, &(map->web.metadata), "FO", "title",
OWS_WARN, " <Title>%s</Title>\n", map->name);
msOWSPrintEncodeMetadata(stdout, &(map->web.metadata), "FO", "abstract",
OWS_NOERR, " <Abstract>%s</Abstract>\n", NULL);
msOWSPrintEncodeMetadataList(stdout, &(map->web.metadata), "FO",
"keywordlist",
" <Keywords>\n", " </Keywords>\n",
" %s\n", NULL);
/* Service/onlineresource */
/* Defaults to same as request onlineresource if wfs_service_onlineresource */
/* is not set. */
msOWSPrintEncodeMetadata(stdout, &(map->web.metadata),
"FO", "service_onlineresource", OWS_NOERR,
" <OnlineResource>%s</OnlineResource>\n",
script_url_encoded);
msOWSPrintEncodeMetadata(stdout, &(map->web.metadata), "FO", "fees",
OWS_NOERR, " <Fees>%s</Fees>\n", NULL);
msOWSPrintEncodeMetadata(stdout, &(map->web.metadata), "FO",
"accessconstraints", OWS_NOERR,
" <AccessConstraints>%s</AccessConstraints>\n",
NULL);
msIO_printf("</Service>\n\n");
/*
** CAPABILITY definitions: list of supported requests
*/
msIO_printf("<Capability>\n");
msIO_printf(" <Request>\n");
msWFSPrintRequestCap(wmtver, "GetCapabilities", script_url_encoded,
NULL, NULL);
/* msWFSPrintRequestCap(wmtver, "DescribeFeatureType", script_url_encoded, "SchemaDescriptionLanguage", "XMLSCHEMA", "SFE_XMLSCHEMA", NULL); */
/* msWFSPrintRequestCap(wmtver, "GetFeature", script_url_encoded, "ResultFormat", "GML2", "GML3", NULL); */
/* don't advertise the GML3 or GML for SFE support */
if (msOWSRequestIsEnabled(map, NULL, "F", "DescribeFeatureType", MS_TRUE))
msWFSPrintRequestCap(wmtver, "DescribeFeatureType", script_url_encoded, "SchemaDescriptionLanguage", "XMLSCHEMA" );
if (msOWSRequestIsEnabled(map, NULL, "F", "GetFeature", MS_TRUE)) {
formats_list = msWFSGetOutputFormatList( map, NULL, OWS_1_0_0 );
msWFSPrintRequestCap(wmtver, "GetFeature", script_url_encoded, "ResultFormat", formats_list );
msFree( formats_list );
}
msIO_printf(" </Request>\n");
msIO_printf("</Capability>\n\n");
/*
** FeatureTypeList: layers
*/
msIO_printf("<FeatureTypeList>\n");
/* Operations supported... set default at top-level, and more operations */
/* can be added inside each layer... for MapServer only query is supported */
msIO_printf(" <Operations>\n");
msIO_printf(" <Query/>\n");
msIO_printf(" </Operations>\n");
for(i=0; i<map->numlayers; i++) {
layerObj *lp;
lp = GET_LAYER(map, i);
if (lp->status == MS_DELETE)
continue;
if (msWFSIsLayerAllowed(lp, ows_request)) {
msWFSDumpLayer(map, lp);
}
}
msIO_printf("</FeatureTypeList>\n\n");
/*
** OGC Filter Capabilities ... for now we support only BBOX
*/
msIO_printf("<ogc:Filter_Capabilities>\n");
msIO_printf(" <ogc:Spatial_Capabilities>\n");
msIO_printf(" <ogc:Spatial_Operators>\n");
#ifdef USE_GEOS
msIO_printf(" <ogc:Equals/>\n");
msIO_printf(" <ogc:Disjoint/>\n");
msIO_printf(" <ogc:Touches/>\n");
msIO_printf(" <ogc:Within/>\n");
msIO_printf(" <ogc:Overlaps/>\n");
msIO_printf(" <ogc:Crosses/>\n");
msIO_printf(" <ogc:Intersect/>\n");
msIO_printf(" <ogc:Contains/>\n");
msIO_printf(" <ogc:DWithin/>\n");
#endif
msIO_printf(" <ogc:BBOX/>\n");
msIO_printf(" </ogc:Spatial_Operators>\n");
msIO_printf(" </ogc:Spatial_Capabilities>\n");
msIO_printf(" <ogc:Scalar_Capabilities>\n");
msIO_printf(" <ogc:Logical_Operators />\n");
msIO_printf(" <ogc:Comparison_Operators>\n");
msIO_printf(" <ogc:Simple_Comparisons />\n");
msIO_printf(" <ogc:Like />\n");
msIO_printf(" <ogc:Between />\n");
msIO_printf(" </ogc:Comparison_Operators>\n");
msIO_printf(" </ogc:Scalar_Capabilities>\n");
msIO_printf("</ogc:Filter_Capabilities>\n\n");
/*
** Done!
*/
msIO_printf("</WFS_Capabilities>\n");
free(script_url_encoded);
return MS_SUCCESS;
}
/*
** Helper functions for producing XML schema.
*/
static const char *msWFSGetGeometryType(const char *type, OWSGMLVersion outputformat)
{
if(!type) return "GeometryPropertyType";
if(strcasecmp(type, "point") == 0) {
switch(outputformat) {
case OWS_GML2:
case OWS_GML3:
case OWS_GML32:
return "PointPropertyType";
}
} else if(strcasecmp(type, "multipoint") == 0) {
switch(outputformat) {
case OWS_GML2:
case OWS_GML3:
case OWS_GML32:
return "MultiPointPropertyType";
}
} else if(strcasecmp(type, "line") == 0) {
switch(outputformat) {
case OWS_GML2:
return "LineStringPropertyType";
case OWS_GML3:
case OWS_GML32:
return "CurvePropertyType";
}
} else if(strcasecmp(type, "multiline") == 0) {
switch(outputformat) {
case OWS_GML2:
return "MultiLineStringPropertyType";
case OWS_GML3:
case OWS_GML32:
return "MultiCurvePropertyType";
}
} else if(strcasecmp(type, "polygon") == 0) {
switch(outputformat) {
case OWS_GML2:
return "PolygonPropertyType";
case OWS_GML3:
case OWS_GML32:
return "SurfacePropertyType";
}
} else if(strcasecmp(type, "multipolygon") == 0) {
switch(outputformat) {
case OWS_GML2:
return "MultiPolygonPropertyType";
case OWS_GML3:
case OWS_GML32:
return "MultiSurfacePropertyType";
}
}
return "???unknown???";
}
static void msWFSWriteGeometryElement(FILE *stream, gmlGeometryListObj *geometryList, OWSGMLVersion outputformat, const char *tab)
{
int i;
gmlGeometryObj *geometry=NULL;
if(!stream || !tab) return;
if(geometryList && geometryList->numgeometries == 1 && strcasecmp(geometryList->geometries[0].name, "none") == 0) return;
if(geometryList->numgeometries == 1) {
geometry = &(geometryList->geometries[0]);
msIO_fprintf(stream, "%s<element name=\"%s\" type=\"gml:%s\" minOccurs=\"%d\"", tab, geometry->name, msWFSGetGeometryType(geometry->type, outputformat), geometry->occurmin);
if(geometry->occurmax == OWS_GML_OCCUR_UNBOUNDED)
msIO_fprintf(stream, " maxOccurs=\"unbounded\"/>\n");
else
msIO_fprintf(stream, " maxOccurs=\"%d\"/>\n", geometry->occurmax);
} else {
msIO_fprintf(stream, "%s<choice>\n", tab);
for(i=0; i<geometryList->numgeometries; i++) {
geometry = &(geometryList->geometries[i]);
msIO_fprintf(stream, " %s<element name=\"%s\" type=\"gml:%s\" minOccurs=\"%d\"", tab, geometry->name, msWFSGetGeometryType(geometry->type, outputformat), geometry->occurmin);
if(geometry->occurmax == OWS_GML_OCCUR_UNBOUNDED)
msIO_fprintf(stream, " maxOccurs=\"unbounded\"/>\n");
else
msIO_fprintf(stream, " maxOccurs=\"%d\"/>\n", geometry->occurmax);
}
msIO_fprintf(stream, "%s</choice>\n", tab);
}
return;
}
static OWSGMLVersion msWFSGetGMLVersionFromSchemaVersion(WFSSchemaVersion outputformat)