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mapmetadata.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: Metadata implementation
* Author: Tom Kralidis ([email protected])
*
**********************************************************************
* Copyright (c) 2017, Tom Kralidis
*
* 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"
#include "mapowscommon.h"
#include "maplibxml2.h"
/************************************************************************/
/* _msMetadataGetCharacterString */
/* */
/* Create a gmd:name/gmd:CharacterString element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetCharacterString(xmlNsPtr namespace, const char *name, const char *value, xmlNsPtr* ppsNsGco) {
xmlNodePtr psNode = NULL;
if( *ppsNsGco == NULL )
*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gco");
psNode = xmlNewNode(namespace, BAD_CAST name);
if (!value)
xmlNewNsProp(psNode, *ppsNsGco, BAD_CAST "nilReason", BAD_CAST "missing");
else
xmlNewChild(psNode, *ppsNsGco, BAD_CAST "CharacterString", BAD_CAST value);
return psNode;
}
/************************************************************************/
/* _msMetadataGetURL */
/* */
/* Create a gmd:name/gmd:URL element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetURL(xmlNsPtr namespace, const char *name, const char *value, xmlNsPtr* ppsNsGco) {
xmlNodePtr psNode = NULL;
if( *ppsNsGco == NULL )
*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gco");
psNode = xmlNewNode(namespace, BAD_CAST name);
if (!value)
xmlNewNsProp(psNode, *ppsNsGco, BAD_CAST "nilReason", BAD_CAST "missing");
else
xmlNewChild(psNode, namespace, BAD_CAST "URL", BAD_CAST value);
return psNode;
}
/************************************************************************/
/* _msMetadataGetOnline */
/* */
/* Create a gmd:onLine element pattern */
/************************************************************************/
static char* _stringConcatenateAndEncodeHTML(char* str, const char* appendStr)
{
char* pszTmp = msEncodeHTMLEntities(appendStr);
str = msStringConcatenate(str, pszTmp);
msFree(pszTmp);
return str;
}
static
xmlNodePtr _msMetadataGetOnline(xmlNsPtr namespace, layerObj *layer, const char *service, const char *format, const char *desc, const char *url_in, xmlNsPtr* ppsNsGco) {
int status;
char *url = NULL;
char buffer[32];
const char *link_protocol = "unknown protocol";
xmlNodePtr psNode = NULL;
xmlNodePtr psORNode = NULL;
rectObj rect;
psNode = xmlNewNode(namespace, BAD_CAST "onLine");
psORNode = xmlNewChild(psNode, namespace, BAD_CAST "CI_OnlineResource", NULL);
url = msStrdup(url_in);
if (strcasecmp(service, "M") == 0) {
url = _stringConcatenateAndEncodeHTML(url, "service=WMS&version=1.3.0&request=GetMap&width=500&height=300&styles=&layers=");
url = _stringConcatenateAndEncodeHTML(url, layer->name);
url = _stringConcatenateAndEncodeHTML(url, "&format=");
url = _stringConcatenateAndEncodeHTML(url, format);
url = _stringConcatenateAndEncodeHTML(url, "&crs=");
{
char* epsg_str = NULL;
msOWSGetEPSGProj(&(layer->projection), &(layer->metadata), "MFCSGO", MS_TRUE, &epsg_str);
url = _stringConcatenateAndEncodeHTML(url, epsg_str);
msFree(epsg_str);
}
link_protocol = "WWW:DOWNLOAD-1.0-http-get-map";
status = msLayerGetExtent(layer, &rect);
if (status == 0) {
url = _stringConcatenateAndEncodeHTML(url, "&bbox=");
sprintf(buffer, "%f", rect.miny);
url = msStringConcatenate(url, buffer);
url = msStringConcatenate(url, ",");
sprintf(buffer, "%f", rect.minx);
url = msStringConcatenate(url, buffer);
url = msStringConcatenate(url, ",");
sprintf(buffer, "%f", rect.maxy);
url = msStringConcatenate(url, buffer);
url = msStringConcatenate(url, ",");
sprintf(buffer, "%f", rect.maxx);
url = msStringConcatenate(url, buffer);
}
}
else if (strcasecmp(service, "F") == 0) {
link_protocol = "WWW:DOWNLOAD-1.0-http--download";
url = _stringConcatenateAndEncodeHTML(url, "service=WFS&version=1.1.0&request=GetFeature&typename=");
url = _stringConcatenateAndEncodeHTML(url, layer->name);
url = _stringConcatenateAndEncodeHTML(url, "&outputformat=");
url = _stringConcatenateAndEncodeHTML(url, format);
}
else if (strcasecmp(service, "C") == 0) {
link_protocol = "WWW:DOWNLOAD-1.0-http--download";
url = _stringConcatenateAndEncodeHTML(url, "service=WCS&version=2.0.1&request=GetCoverage&coverageid=");
url = _stringConcatenateAndEncodeHTML(url, layer->name);
url = _stringConcatenateAndEncodeHTML(url, "&format=");
url = _stringConcatenateAndEncodeHTML(url, format);
}
xmlAddChild(psORNode, _msMetadataGetURL(namespace, "linkage", url, ppsNsGco));
msFree(url);
xmlAddChild(psORNode, _msMetadataGetCharacterString(namespace, "protocol", link_protocol, ppsNsGco));
xmlAddChild(psORNode, _msMetadataGetCharacterString(namespace, "name", layer->name, ppsNsGco));
xmlAddChild(psORNode, _msMetadataGetCharacterString(namespace, "description", desc, ppsNsGco));
return psNode;
}
/************************************************************************/
/* _msMetadataGetInteger */
/* */
/* Create a gmd:name/gmd:Integer element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetInteger(xmlNsPtr namespace, const char *name, int value, xmlNsPtr* ppsNsGco) {
char buffer[8];
xmlNodePtr psNode = NULL;
sprintf(buffer, "%d", value);
if( *ppsNsGco == NULL )
*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gco");
psNode = xmlNewNode(namespace, BAD_CAST name);
if (!value)
xmlNewNsProp(psNode, *ppsNsGco, BAD_CAST "nilReason", BAD_CAST "missing");
else
xmlNewChild(psNode, *ppsNsGco, BAD_CAST "Integer", BAD_CAST buffer);
return psNode;
}
/************************************************************************/
/* _msMetadataGetDecimal */
/* */
/* Create a gmd:name/gmd:Decimal element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetDecimal(xmlNsPtr namespace, const char *name, double value, xmlNsPtr* ppsNsGco) {
char buffer[32];
xmlNodePtr psNode = NULL;
sprintf(buffer, "%f", value);
if( *ppsNsGco == NULL )
*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gco");
psNode = xmlNewNode(namespace, BAD_CAST name);
if (!value)
xmlNewNsProp(psNode, *ppsNsGco, BAD_CAST "nilReason", BAD_CAST "missing");
else
xmlNewChild(psNode, *ppsNsGco, BAD_CAST "Decimal", BAD_CAST buffer);
return psNode;
}
/************************************************************************/
/* _msMetadataGetCodeList */
/* */
/* Create a gmd:name/gmd:* code list element pattern */
/************************************************************************/
xmlNodePtr _msMetadataGetCodeList(xmlNsPtr namespace, const char *parent_element, const char *name, const char *value) {
char *codelist = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psCodeNode = NULL;
codelist = msStrdup("http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#");
codelist = msStringConcatenate(codelist, name);
psNode = xmlNewNode(namespace, BAD_CAST parent_element);
psCodeNode = xmlNewChild(psNode, namespace, BAD_CAST name, BAD_CAST value);
xmlNewProp(psCodeNode, BAD_CAST "codeSpace", BAD_CAST "ISOTC211/19115");
xmlNewProp(psCodeNode, BAD_CAST "codeList", BAD_CAST codelist);
xmlNewProp(psCodeNode, BAD_CAST "codeListValue", BAD_CAST value);
msFree(codelist);
return psNode;
}
/************************************************************************/
/* _msMetadataGetDate */
/* */
/* Create a gmd:date or gmd:dateStamp element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetDate(xmlNsPtr namespace, const char *parent_element, const char *date_type, const char *value, xmlNsPtr* ppsNsGco) {
xmlNodePtr psNode = NULL;
xmlNodePtr psNode2 = NULL;
if( *ppsNsGco == NULL )
*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gco");
psNode = xmlNewNode(namespace, BAD_CAST parent_element);
if (date_type == NULL) { /* it's a gmd:dateStamp */
xmlNewChild(psNode, *ppsNsGco, BAD_CAST "Date", BAD_CAST value);
return psNode;
}
psNode2 = xmlNewChild(psNode, namespace, BAD_CAST "date", NULL);
xmlNewChild(psNode2, *ppsNsGco, BAD_CAST "Date", BAD_CAST value);
xmlAddChild(psNode, _msMetadataGetCodeList(namespace, "dateType", "CI_DateTypeCode", date_type));
return psNode;
}
/************************************************************************/
/* _msMetadataGetGMLTimePeriod */
/* */
/* Create a gml:TimePeriod element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetGMLTimePeriod(char **temporal)
{
xmlNsPtr psNsGml = NULL;
xmlNodePtr psNode = NULL;
psNsGml = xmlNewNs(NULL, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml");
psNode = xmlNewNode(psNsGml, BAD_CAST "TimePeriod");
xmlNewNsProp(psNode, psNsGml, BAD_CAST "id", BAD_CAST "T001");
xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml");
xmlSetNs(psNode, psNsGml);
xmlNewChild(psNode, psNsGml, BAD_CAST "beginPosition", BAD_CAST temporal[0]);
xmlNewChild(psNode, psNsGml, BAD_CAST "endPosition", BAD_CAST temporal[1]);
return psNode;
}
/************************************************************************/
/* _msMetadataGetExtent */
/* */
/* Create a gmd:extent element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetExtent(xmlNsPtr namespace, layerObj *layer, xmlNsPtr *ppsNsGco)
{
int n = 0;
int status;
char *value = NULL;
char **temporal = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psEXNode = NULL;
xmlNodePtr psGNode = NULL;
xmlNodePtr psGNode2 = NULL;
xmlNodePtr psTNode = NULL;
xmlNodePtr psTNode2 = NULL;
xmlNodePtr psENode = NULL;
rectObj rect;
psNode = xmlNewNode(namespace, BAD_CAST "extent");
psEXNode = xmlNewChild(psNode, namespace, BAD_CAST "EX_Extent", NULL);
/* scan for geospatial extent */
status = msLayerGetExtent(layer, &rect);
if (status == 0) {
/* always project to lat long */
msOWSProjectToWGS84(&layer->projection, &rect);
psGNode = xmlNewChild(psEXNode, namespace, BAD_CAST "geographicElement", NULL);
psGNode2 = xmlNewChild(psGNode, namespace, BAD_CAST "EX_GeographicBoundingBox", NULL);
xmlAddChild(psGNode2, _msMetadataGetDecimal(namespace, "westBoundLongitude", rect.minx, ppsNsGco));
xmlAddChild(psGNode2, _msMetadataGetDecimal(namespace, "eastBoundLongitude", rect.maxx, ppsNsGco));
xmlAddChild(psGNode2, _msMetadataGetDecimal(namespace, "southBoundLatitude", rect.miny, ppsNsGco));
xmlAddChild(psGNode2, _msMetadataGetDecimal(namespace, "northBoundLatitude", rect.maxy, ppsNsGco));
}
/* scan for temporal extent */
value = (char *)msOWSLookupMetadata(&(layer->metadata), "MO", "timeextent");
if (value) { /* WMS */
temporal = msStringSplit(value, '/', &n);
}
else { /* WCS */
value = (char *)msOWSLookupMetadata(&(layer->metadata), "CO", "timeposition");
if (value) {
/* split extent */
temporal = msStringSplit(value, ',', &n);
}
}
if (!value) { /* SOS */
value = (char *)msOWSLookupMetadata(&(layer->metadata), "SO", "offering_timeextent");
if (value)
temporal = msStringSplit(value, '/', &n);
}
if (value) {
if (temporal && n > 0) {
psTNode = xmlNewChild(psEXNode, namespace, BAD_CAST "temporalElement", NULL);
psTNode2 = xmlNewChild(psTNode, namespace, BAD_CAST "EX_TemporalExtent", NULL);
psENode = xmlNewChild(psTNode2, namespace, BAD_CAST "extent", NULL);
xmlAddChild(psENode, _msMetadataGetGMLTimePeriod(temporal));
msFreeCharArray(temporal, n);
}
}
return psNode;
}
/************************************************************************/
/* _msMetadataGetReferenceSystemInfo */
/* */
/* Create a gmd:referenceSystemInfo element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetReferenceSystemInfo(xmlNsPtr namespace, layerObj *layer, xmlNsPtr* ppsNsGco)
{
char *epsg_str = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psRSNode = NULL;
xmlNodePtr psRSINode = NULL;
xmlNodePtr psRSINode2 = NULL;
psNode = xmlNewNode(namespace, BAD_CAST "referenceSystemInfo");
psRSNode = xmlNewChild(psNode, namespace, BAD_CAST "MD_ReferenceSystem", NULL);
psRSINode = xmlNewChild(psRSNode, namespace, BAD_CAST "referenceSystemIdentifier", NULL);
psRSINode2 = xmlNewChild(psRSINode, namespace, BAD_CAST "RS_Identifier", NULL);
msOWSGetEPSGProj(&(layer->projection), &(layer->metadata), "MFCSGO", MS_TRUE, &epsg_str);
xmlAddChild(psRSINode2, _msMetadataGetCharacterString(namespace, "code", epsg_str, ppsNsGco));
xmlAddChild(psRSINode2, _msMetadataGetCharacterString(namespace, "codeSpace", "http://www.epsg-registry.org", ppsNsGco));
xmlAddChild(psRSINode2, _msMetadataGetCharacterString(namespace, "version", "6.14", ppsNsGco));
msFree(epsg_str);
return psNode;
}
/************************************************************************/
/* _msMetadataGetContact */
/* */
/* Create a gmd:contact element pattern */
/************************************************************************/
xmlNodePtr _msMetadataGetContact(xmlNsPtr namespace, char *contact_element, mapObj *map, xmlNsPtr* ppsNsGco)
{
char *value = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psCNode = NULL;
xmlNodePtr psCINode = NULL;
xmlNodePtr psCINode2 = NULL;
xmlNodePtr psPhoneNode = NULL;
xmlNodePtr psCIPhoneNode = NULL;
xmlNodePtr psAddressNode = NULL;
xmlNodePtr psCIAddressNode = NULL;
xmlNodePtr psORNode = NULL;
xmlNodePtr psORNode2 = NULL;
psNode = xmlNewNode(namespace, BAD_CAST contact_element);
psCNode = xmlNewChild(psNode, namespace, BAD_CAST "CI_ResponsibleParty", NULL);
xmlNewProp(psCNode, BAD_CAST "id", BAD_CAST contact_element);
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactperson");
if (value)
xmlAddChild(psCNode, _msMetadataGetCharacterString(namespace, "individualName", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactorganization");
if (value)
xmlAddChild(psCNode, _msMetadataGetCharacterString(namespace, "organisationName", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactposition");
if (value)
xmlAddChild(psCNode, _msMetadataGetCharacterString(namespace, "positionName", value, ppsNsGco));
psCINode = xmlNewChild(psCNode, namespace, BAD_CAST "contactInfo", NULL);
psCINode2 = xmlNewChild(psCINode, namespace, BAD_CAST "CI_Contact", NULL);
psPhoneNode = xmlNewChild(psCINode2, namespace, BAD_CAST "phone", NULL);
psCIPhoneNode = xmlNewChild(psPhoneNode, namespace, BAD_CAST "CI_Telephone", NULL);
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactvoicetelephone");
if (value)
xmlAddChild(psCIPhoneNode, _msMetadataGetCharacterString(namespace, "voice", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactfacsimiletelephone");
if (value)
xmlAddChild(psCIPhoneNode, _msMetadataGetCharacterString(namespace, "facsimile", value, ppsNsGco));
psAddressNode = xmlNewChild(psCINode2, namespace, BAD_CAST "address", NULL);
psCIAddressNode = xmlNewChild(psAddressNode, namespace, BAD_CAST "CI_Address", NULL);
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "address");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "deliveryPoint", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "city");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "city", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "stateorprovince");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "administrativeArea", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "postcode");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "postalCode", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "country");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "country", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactelectronicmailaddress");
if (value)
xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(namespace, "electronicMailAddress", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(map->web.metadata), "MCFO", "onlineresource");
if (value) {
psORNode = xmlNewChild(psCINode2, namespace, BAD_CAST "onlineResource", NULL);
psORNode2 = xmlNewChild(psORNode, namespace, BAD_CAST "CI_OnlineResource", NULL);
xmlAddChild(psORNode2, _msMetadataGetURL(namespace, "linkage", value, ppsNsGco));
}
xmlAddChild(psCNode, _msMetadataGetCodeList(namespace, "role", "CI_RoleCode", "pointOfContact"));
return psNode;
}
/************************************************************************/
/* _msMetadataGetIdentificationInfo */
/* */
/* Create a gmd:identificationInfo element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetIdentificationInfo(xmlNsPtr namespace, mapObj *map, layerObj *layer, xmlNsPtr *ppsNsGco)
{
int i = 0;
int n;
char *value;
char **tokens = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psDINode = NULL;
xmlNodePtr psCNode = NULL;
xmlNodePtr psCINode = NULL;
xmlNodePtr psDNode = NULL;
xmlNodePtr psKWNode = NULL;
xmlNodePtr psMDKNode = NULL;
psNode = xmlNewNode(namespace, BAD_CAST "identificationInfo");
psDINode = xmlNewChild(psNode, namespace, BAD_CAST "MD_DataIdentification", NULL);
xmlNewProp(psDINode, BAD_CAST "id", BAD_CAST layer->name);
psCNode = xmlNewChild(psDINode, namespace, BAD_CAST "citation", NULL);
psCINode = xmlNewChild(psCNode, namespace, BAD_CAST "CI_Citation", NULL);
value = (char *)msOWSLookupMetadata(&(layer->metadata), "MCFGO", "title");
if (!value)
value = (char *)msOWSLookupMetadata(&(layer->metadata), "S", "offering_name");
xmlAddChild(psCINode, _msMetadataGetCharacterString(namespace, "title", value, ppsNsGco));
psDNode = xmlNewChild(psCINode, namespace, BAD_CAST "date", NULL);
xmlAddChild(psDNode, _msMetadataGetDate(namespace, "CI_Date", "publication", "2011", ppsNsGco));
value = (char *)msOWSLookupMetadata(&(layer->metadata), "MCFGO", "abstract");
if (!value)
value = (char *)msOWSLookupMetadata(&(layer->metadata), "S", "offering_description");
xmlAddChild(psDINode, _msMetadataGetCharacterString(namespace, "abstract", value, ppsNsGco));
value = (char *)msOWSLookupMetadata(&(layer->metadata), "MCFSGO", "keywordlist");
if (value) {
psKWNode = xmlNewChild(psDINode, namespace, BAD_CAST "descriptiveKeywords", NULL);
psMDKNode = xmlNewChild(psKWNode, namespace, BAD_CAST "MD_Keywords", NULL);
tokens = msStringSplit(value, ',', &n);
if (tokens && n > 0) {
for (i=0; i<n; i++) {
xmlAddChild(psMDKNode, _msMetadataGetCharacterString(namespace, "keyword", tokens[i], ppsNsGco));
}
msFreeCharArray(tokens, n);
}
}
xmlAddChild(psDINode, _msMetadataGetCharacterString(namespace, "language", (char *)msOWSGetLanguage(map, "exception"), ppsNsGco));
xmlAddChild(psDINode, _msMetadataGetExtent(namespace, layer, ppsNsGco));
return psNode;
}
/************************************************************************/
/* _msMetadataGetSpatialRepresentationInfo */
/* */
/* Create a gmd:spatialRepresentationInfo element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetSpatialRepresentationInfo(xmlNsPtr namespace, layerObj *layer, xmlNsPtr* ppsNsGco)
{
char *value;
xmlNodePtr psNode = NULL;
xmlNodePtr psSRNode = NULL;
xmlNodePtr psGONode = NULL;
xmlNodePtr psGONode2 = NULL;
psNode = xmlNewNode(namespace, BAD_CAST "spatialRepresentationInfo");
if (layer->type == MS_LAYER_RASTER) {
psSRNode = xmlNewChild(psNode, namespace, BAD_CAST "MD_GridSpatialRepresentation", NULL);
xmlAddChild(psSRNode, _msMetadataGetInteger(namespace, "numberOfDimensions", 2, ppsNsGco));
xmlAddChild(psSRNode, _msMetadataGetCodeList(namespace, "cellGeometry", "MD_CellGeometryCode", "area"));
}
else {
psSRNode = xmlNewChild(psNode, namespace, BAD_CAST "MD_VectorSpatialRepresentation", NULL);
xmlAddChild(psSRNode, _msMetadataGetCodeList(namespace, "topologyLevel", "MD_TopologyLevelCode", "geometryOnly"));
psGONode = xmlNewChild(psSRNode, namespace, BAD_CAST "geometricObjects", NULL);
psGONode2 = xmlNewChild(psGONode, namespace, BAD_CAST "MD_GeometricObjects", NULL);
if (layer->type == MS_LAYER_POINT)
value = "point";
else if (layer->type == MS_LAYER_LINE)
value = "curve";
else if (layer->type == MS_LAYER_POLYGON)
value = "surface";
else
value = "complex";
xmlAddChild(psGONode2, _msMetadataGetCodeList(namespace, "geometricObjectType", "MD_GeometricObjectTypeCode", value));
// TODO: find way to get feature count in a fast way
/* xmlAddChild(psGONode2, _msMetadataGetInteger(namespace, "geometricObjectCount", msLayerGetNumFeatures(layer))); */
}
return psNode;
}
/************************************************************************/
/* _msMetadataGetDistributionInfo */
/* */
/* Create a gmd:identificationInfo element pattern */
/************************************************************************/
static
xmlNodePtr _msMetadataGetDistributionInfo(xmlNsPtr namespace, mapObj *map, layerObj *layer, cgiRequestObj *cgi_request, xmlNsPtr* ppsNsGco)
{
char *url = NULL;
xmlNodePtr psNode = NULL;
xmlNodePtr psMDNode = NULL;
xmlNodePtr psTONode = NULL;
xmlNodePtr psDTONode = NULL;
xmlNodePtr psDNode = NULL;
xmlNodePtr psDNode2 = NULL;
psNode = xmlNewNode(namespace, BAD_CAST "distributionInfo");
psMDNode = xmlNewChild(psNode, namespace, BAD_CAST "MD_Distribution", NULL);
{
char* pszTmp = msOWSGetOnlineResource(map, "MFCSGO", "onlineresource", cgi_request);
url = msEncodeHTMLEntities(pszTmp);
msFree(pszTmp);
}
/* gmd:distributor */
psDNode = xmlNewChild(psMDNode, namespace, BAD_CAST "distributor", NULL);
psDNode2 = xmlNewChild(psDNode, namespace, BAD_CAST "MD_Distributor", NULL);
xmlAddChild(psDNode2, _msMetadataGetContact(namespace, "distributorContact", map, ppsNsGco));
/* gmd:transferOptions */
psTONode = xmlNewChild(psMDNode, namespace, BAD_CAST "transferOptions", NULL);
psDTONode = xmlNewChild(psTONode, namespace, BAD_CAST "MD_DigitalTransferOptions", NULL);
xmlAddChild(psDTONode, _msMetadataGetCharacterString(namespace, "unitsOfDistribution", "KB", ppsNsGco));
/* links */
/* WMS */
xmlAddChild(psDTONode, _msMetadataGetOnline(namespace, layer, "M", "image/png", "PNG Format", url, ppsNsGco));
xmlAddChild(psDTONode, _msMetadataGetOnline(namespace, layer, "M", "image/jpeg", "JPEG Format", url, ppsNsGco));
/* WCS */
if (layer->type == MS_LAYER_RASTER) {
xmlAddChild(psDTONode, _msMetadataGetOnline(namespace, layer, "C", "image/tiff", "GeoTIFF Format", url, ppsNsGco));
}
/* WFS */
else {
xmlAddChild(psDTONode, _msMetadataGetOnline(namespace, layer, "F", "GML2", "GML2 Format", url, ppsNsGco));
xmlAddChild(psDTONode, _msMetadataGetOnline(namespace, layer, "F", "GML3", "GML3 Format", url, ppsNsGco));
}
msFree(url);
return psNode;
}
/************************************************************************/
/* msMetadataGetExceptionReport */
/* */
/* Generate an OWS Common Exception Report */
/************************************************************************/
static
xmlNodePtr msMetadataGetExceptionReport(mapObj *map, char *code, char *locator, char *message, xmlNsPtr* ppsNsOws)
{
char *schemas_location = NULL;
xmlNodePtr psRootNode = NULL;
schemas_location = msEncodeHTMLEntities(msOWSGetSchemasLocation(map));
*ppsNsOws = xmlNewNs(NULL, BAD_CAST "http://www.opengis.net/ows/1.1", BAD_CAST "ows");
psRootNode = msOWSCommonExceptionReport(*ppsNsOws,
OWS_1_1_0,
schemas_location,
"1.1.0",
msOWSGetLanguage(map, "exception"),
code, locator, message);
msFree(schemas_location);
xmlNewNs(psRootNode, BAD_CAST "http://www.opengis.net/ows/1.1", BAD_CAST "ows");
return psRootNode;
}
/************************************************************************/
/* msMetadataGetLayerMetadata */
/* */
/* Generate an ISO 19139:2007 representation of layer metadata */
/************************************************************************/
static
xmlNodePtr msMetadataGetLayerMetadata(mapObj *map, metadataParamsObj *paramsObj, cgiRequestObj *cgi_request, owsRequestObj *ows_request, xmlNsPtr* ppsNsOws, xmlNsPtr* ppsNsXsi, xmlNsPtr* ppsNsGmd, xmlNsPtr* ppsNsGco)
{
int i;
int layer_found = MS_FALSE;
xmlNodePtr psRootNode = NULL;
layerObj *layer = NULL;
/* Check that layer requested exists in mapfile */
for (i=0; i<map->numlayers; i++) {
if(strcasecmp(GET_LAYER(map, i)->name, paramsObj->pszLayer) == 0) {
layer_found = MS_TRUE;
layer = GET_LAYER(map, i);
break;
}
}
if (layer_found == MS_FALSE) {
psRootNode = msMetadataGetExceptionReport(map, "InvalidParameterValue", "layer", "Layer not found", ppsNsOws);
}
/* Check that outputschema is valid */
else if (paramsObj->pszOutputSchema && strcasecmp(paramsObj->pszOutputSchema, "http://www.isotc211.org/2005/gmd") != 0) {
psRootNode = msMetadataGetExceptionReport(map, "InvalidParameterValue", "outputschema", "OUTPUTSCHEMA must be \"http://www.isotc211.org/2005/gmd\"", ppsNsOws);
}
else {
*ppsNsXsi = xmlNewNs(NULL, BAD_CAST "http://www.w3.org/2001/XMLSchema-instance", BAD_CAST "xsi");
*ppsNsGmd = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gmd");
/* root element */
psRootNode = xmlNewNode(NULL, BAD_CAST "MD_Metadata");
xmlNewNs(psRootNode, BAD_CAST "http://www.isotc211.org/2005/gmd", BAD_CAST "gmd");
xmlNewNs(psRootNode, BAD_CAST "http://www.isotc211.org/2005/gco", BAD_CAST "gco");
xmlNewNs(psRootNode, BAD_CAST "http://www.w3.org/2001/XMLSchema-instance", BAD_CAST "xsi");
xmlSetNs(psRootNode, *ppsNsGmd);
xmlNewNsProp(psRootNode, *ppsNsXsi, BAD_CAST "schemaLocation", BAD_CAST "http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmd/gmd.xsd");
/* gmd:identifier */
xmlAddChild(psRootNode, _msMetadataGetCharacterString(*ppsNsGmd, "fileIdentifier", layer->name, ppsNsGco));
/* gmd:language */
xmlAddChild(psRootNode, _msMetadataGetCharacterString(*ppsNsGmd, "language", (char *)msOWSGetLanguage(map, "exception"), ppsNsGco));
/* gmd:hierarchyLevel */
xmlAddChild(psRootNode, _msMetadataGetCodeList(*ppsNsGmd, "hierarchyLevel", "MD_ScopeCode", "dataset"));
/* gmd:contact */
xmlAddChild(psRootNode, _msMetadataGetContact(*ppsNsGmd, "contact", map, ppsNsGco));
/* gmd:dateStamp */
/* TODO: nil for now, find way to derive this automagically */
xmlAddChild(psRootNode, _msMetadataGetCharacterString(*ppsNsGmd, "dateStamp", NULL, ppsNsGco));
/* gmd:metadataStandardName */
xmlAddChild(psRootNode, _msMetadataGetCharacterString(*ppsNsGmd, "metadataStandardName", "ISO 19115:2003 - Geographic information - Metadata", ppsNsGco));
/* gmd:metadataStandardVersion */
xmlAddChild(psRootNode, _msMetadataGetCharacterString(*ppsNsGmd, "metadataStandardVersion", "ISO 19115:2003", ppsNsGco));
/* gmd:spatialRepresentationInfo */
xmlAddChild(psRootNode, _msMetadataGetSpatialRepresentationInfo(*ppsNsGmd, layer, ppsNsGco));
/* gmd:referenceSystemInfo */
xmlAddChild(psRootNode, _msMetadataGetReferenceSystemInfo(*ppsNsGmd, layer, ppsNsGco));
/* gmd:identificationInfo */
xmlAddChild(psRootNode, _msMetadataGetIdentificationInfo(*ppsNsGmd, map, layer, ppsNsGco));
/* gmd:distributionInfo */
xmlAddChild(psRootNode, _msMetadataGetDistributionInfo(*ppsNsGmd, map, layer, cgi_request, ppsNsGco));
}
return psRootNode;
}
/************************************************************************/
/* msMetadataDispatch */
/* */
/* Entry point for metadata requests. */
/* */
/* - If this is a valid request then it is processed and MS_SUCCESS */
/* is returned on success, or MS_FAILURE on failure. */
/* */
/* - If this does not appear to be a valid WFS request then MS_DONE */
/* is returned and MapServer is expected to process this as a regular */
/* MapServer request. */
/************************************************************************/
int msMetadataDispatch(mapObj *map, cgiRequestObj *cgi_request, owsRequestObj *ows_request)
{
int i;
int status = MS_SUCCESS;
xmlNodePtr psRootNode = NULL;
xmlDocPtr xml_document;
metadataParamsObj *paramsObj;
layerObj *layer = NULL;
xmlNsPtr psNsOws = NULL;
xmlNsPtr psNsXsi = NULL;
xmlNsPtr psNsGmd = NULL;
xmlNsPtr psNsGco = NULL;
/* Populate the Params object based on the request */
paramsObj = msMetadataCreateParamsObj();
xml_document = xmlNewDoc(BAD_CAST "1.0");
if (msMetadataParseRequest(map, cgi_request, ows_request, paramsObj) == MS_FAILURE) {
psRootNode = msMetadataGetExceptionReport(map, "InvalidRequest", "layer", "Request parsing failed", &psNsOws);
status = MS_FAILURE;
}
/* if layer= is not specified, */
if (paramsObj->pszLayer==NULL || strlen(paramsObj->pszLayer)<=0) {
psRootNode = msMetadataGetExceptionReport(map, "MissingParameterValue", "layer", "Missing layer parameter", &psNsOws);
status = MS_FAILURE;
}
if (status == MS_SUCCESS) { /* Start dispatching request */
/* Check that layer requested exists in mapfile */
for (i=0; i<map->numlayers; i++) {
if(strcasecmp(GET_LAYER(map, i)->name, paramsObj->pszLayer) == 0) {
layer = GET_LAYER(map, i);
break;
}
}
if (layer != NULL && msOWSLookupMetadata(&(layer->metadata), "MFCO", "metadataurl_href")) {
msIO_setHeader("Status", "301 Moved Permanently");
msIO_setHeader("Location", "%s", msOWSLookupMetadata(&(layer->metadata), "MFCO", "metadataurl_href"));
msIO_sendHeaders();
}
else {
psRootNode = msMetadataGetLayerMetadata(map, paramsObj, cgi_request, ows_request, &psNsOws, &psNsXsi, &psNsGmd, &psNsGco);
}
}
if (psRootNode != NULL) {
xmlChar *xml_buffer = NULL;
int buffersize = 0;
xmlDocSetRootElement(xml_document, psRootNode);
msIO_setHeader("Content-type", "text/xml");
msIO_sendHeaders();
xmlDocDumpFormatMemory(xml_document, &xml_buffer, &buffersize, 1);
msIO_printf("%s", (char *) xml_buffer);
xmlFree(xml_buffer);
}
xmlFreeDoc(xml_document);
if( psNsOws )
xmlFreeNs(psNsOws);
if( psNsXsi )
xmlFreeNs(psNsXsi);
if( psNsGmd )
xmlFreeNs(psNsGmd);
if( psNsGco )
xmlFreeNs(psNsGco);
msMetadataFreeParamsObj(paramsObj);
return status;
}
/************************************************************************/
/* msMetadataCreateParamsObj */
/* */
/* Create a parameter object, initialize it. */
/* The caller should free the object using msMetadataFreeParamsObj. */
/************************************************************************/
metadataParamsObj *msMetadataCreateParamsObj()
{
metadataParamsObj *paramsObj = (metadataParamsObj *)calloc(1, sizeof(metadataParamsObj));
MS_CHECK_ALLOC(paramsObj, sizeof(metadataParamsObj), NULL);
paramsObj->pszLayer = NULL;
paramsObj->pszOutputSchema = NULL;
return paramsObj;
}
/************************************************************************/
/* msMetadataFreeParmsObj */
/* */
/* Free params object. */
/************************************************************************/
void msMetadataFreeParamsObj(metadataParamsObj *metadataparams)
{
if (metadataparams) {
free(metadataparams->pszRequest);
free(metadataparams->pszLayer);
free(metadataparams->pszOutputSchema);
free(metadataparams);
}
}
/************************************************************************/
/* msMetadataParseRequest */
/* */
/* Parse request into the params object. */
/************************************************************************/
int msMetadataParseRequest(mapObj *map, cgiRequestObj *request, owsRequestObj *ows_request,
metadataParamsObj *metadataparams)
{
int i = 0;
if (!request || !metadataparams)
return MS_FAILURE;
if (request->NumParams > 0) {
for(i=0; i<request->NumParams; i++) {
if (request->ParamNames[i] && request->ParamValues[i]) {
if (strcasecmp(request->ParamNames[i], "LAYER") == 0)
metadataparams->pszLayer = msStrdup(request->ParamValues[i]);
if (strcasecmp(request->ParamNames[i], "OUTPUTSCHEMA") == 0)
metadataparams->pszOutputSchema = msStrdup(request->ParamValues[i]);
}
}
}
return MS_SUCCESS;
}
/************************************************************************/
/* msMetadataSetGetMetadataURL */
/* */
/* Parse request into the params object. */
/************************************************************************/
void msMetadataSetGetMetadataURL(layerObj *lp, const char *url)
{
char *pszMetadataURL=NULL;
pszMetadataURL = msStrdup(url);
msDecodeHTMLEntities(pszMetadataURL);
pszMetadataURL = msStringConcatenate(pszMetadataURL, "request=GetMetadata&layer=");
pszMetadataURL = msStringConcatenate(pszMetadataURL, lp->name);
msInsertHashTable(&(lp->metadata), "ows_metadataurl_href", pszMetadataURL);
msInsertHashTable(&(lp->metadata), "ows_metadataurl_type", "TC211");
msInsertHashTable(&(lp->metadata), "ows_metadataurl_format", "text/xml");
msInsertHashTable(&(lp->metadata), "ows_metadatalink_href", pszMetadataURL);
msInsertHashTable(&(lp->metadata), "ows_metadatalink_type", "TC211");
msInsertHashTable(&(lp->metadata), "ows_metadatalink_format", "text/xml");
msFree(pszMetadataURL);
}