MapServer/src/mapmetadata.c at main · MapServer/MapServer · GitHub

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/**********************************************************************

* $Id$

* Project: MapServer

* Purpose: Metadata implementation

* Author: Tom Kralidis (tomkralidis@gmail.com)

**********************************************************************

* 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"

#if defined(USE_WMS_SVR) || defined(USE_WFS_SVR) || defined(USE_WCS_SVR) || \

defined(USE_SOS_SVR) || defined(USE_WMS_LYR) || defined(USE_WFS_LYR)

#ifdef USE_LIBXML2

static int msMetadataParseRequest(cgiRequestObj *request,

metadataParamsObj *metadataparams);

/************************************************************************/

/* _msMetadataGetCharacterString */

/* */

/* Create a gmd:name/gmd:CharacterString element pattern */

/************************************************************************/

static xmlNodePtr _msMetadataGetCharacterString(xmlNsPtr namespace,

const char *name,

const char *value,

xmlNsPtr *ppsNsGco) {

if (*ppsNsGco == NULL)

*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd",

BAD_CAST "gco");

xmlNodePtr 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) {

if (*ppsNsGco == NULL)

*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd",

BAD_CAST "gco");

xmlNodePtr 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;

const char *link_protocol = "unknown protocol";

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST "onLine");

xmlNodePtr psORNode =

xmlNewChild(psNode, namespace, BAD_CAST "CI_OnlineResource", NULL);

char *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";

rectObj rect;

status = msLayerGetExtent(layer, &rect);

if (status == 0) {

char buffer[32];

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];

sprintf(buffer, "%d", value);

if (*ppsNsGco == NULL)

*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd",

BAD_CAST "gco");

xmlNodePtr 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];

snprintf(buffer, sizeof(buffer), "%.6f", value);

if (*ppsNsGco == NULL)

*ppsNsGco = xmlNewNs(NULL, BAD_CAST "http://www.isotc211.org/2005/gmd",

BAD_CAST "gco");

xmlNodePtr 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;

codelist = msStrdup(

"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#");

codelist = msStringConcatenate(codelist, name);

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST parent_element);

xmlNodePtr 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;

}

/************************************************************************/

/* _msMetadataGetGMLTimePeriod */

/* */

/* Create a gml:TimePeriod element pattern */

/************************************************************************/

static xmlNodePtr _msMetadataGetGMLTimePeriod(char **temporal) {

xmlNsPtr psNsGml =

xmlNewNs(NULL, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml");

xmlNodePtr 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 **temporal = NULL;

rectObj rect;

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST "extent");

xmlNodePtr 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);

xmlNodePtr psGNode =

xmlNewChild(psEXNode, namespace, BAD_CAST "geographicElement", NULL);

xmlNodePtr 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 */

const char *value =

msOWSLookupMetadata(&(layer->metadata), "MO", "timeextent");

if (value) { /* WMS */

temporal = msStringSplit(value, '/', &n);

} else { /* WCS */

value = msOWSLookupMetadata(&(layer->metadata), "CO", "timeposition");

if (value) {

/* split extent */

temporal = msStringSplit(value, ',', &n);

}

if (!value) { /* SOS */

value =

msOWSLookupMetadata(&(layer->metadata), "SO", "offering_timeextent");

if (value)

temporal = msStringSplit(value, '/', &n);

}

if (value) {

if (temporal && n > 0) {

xmlNodePtr psTNode =

xmlNewChild(psEXNode, namespace, BAD_CAST "temporalElement", NULL);

xmlNodePtr psTNode2 =

xmlNewChild(psTNode, namespace, BAD_CAST "EX_TemporalExtent", NULL);

xmlNodePtr 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) {

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST "referenceSystemInfo");

xmlNodePtr psRSNode =

xmlNewChild(psNode, namespace, BAD_CAST "MD_ReferenceSystem", NULL);

xmlNodePtr psRSINode = xmlNewChild(

psRSNode, namespace, BAD_CAST "referenceSystemIdentifier", NULL);

xmlNodePtr psRSINode2 =

xmlNewChild(psRSINode, namespace, BAD_CAST "RS_Identifier", NULL);

char *epsg_str = 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) {

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST contact_element);

xmlNodePtr psCNode =

xmlNewChild(psNode, namespace, BAD_CAST "CI_ResponsibleParty", NULL);

xmlNewProp(psCNode, BAD_CAST "id", BAD_CAST contact_element);

const char *value =

msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactperson");

if (value)

xmlAddChild(psCNode, _msMetadataGetCharacterString(

namespace, "individualName", value, ppsNsGco));

value =

msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactorganization");

if (value)

xmlAddChild(psCNode, _msMetadataGetCharacterString(

namespace, "organisationName", value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "contactposition");

if (value)

xmlAddChild(psCNode, _msMetadataGetCharacterString(

namespace, "positionName", value, ppsNsGco));

xmlNodePtr psCINode =

xmlNewChild(psCNode, namespace, BAD_CAST "contactInfo", NULL);

xmlNodePtr psCINode2 =

xmlNewChild(psCINode, namespace, BAD_CAST "CI_Contact", NULL);

xmlNodePtr psPhoneNode =

xmlNewChild(psCINode2, namespace, BAD_CAST "phone", NULL);

xmlNodePtr psCIPhoneNode =

xmlNewChild(psPhoneNode, namespace, BAD_CAST "CI_Telephone", NULL);

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO",

"contactvoicetelephone");

if (value)

xmlAddChild(psCIPhoneNode, _msMetadataGetCharacterString(namespace, "voice",

value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO",

"contactfacsimiletelephone");

if (value)

xmlAddChild(psCIPhoneNode, _msMetadataGetCharacterString(

namespace, "facsimile", value, ppsNsGco));

xmlNodePtr psAddressNode =

xmlNewChild(psCINode2, namespace, BAD_CAST "address", NULL);

xmlNodePtr psCIAddressNode =

xmlNewChild(psAddressNode, namespace, BAD_CAST "CI_Address", NULL);

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "address");

if (value)

xmlAddChild(psCIAddressNode,

_msMetadataGetCharacterString(namespace, "deliveryPoint", value,

ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "city");

if (value)

xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(

namespace, "city", value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "stateorprovince");

if (value)

xmlAddChild(psCIAddressNode,

_msMetadataGetCharacterString(namespace, "administrativeArea",

value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "postcode");

if (value)

xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(

namespace, "postalCode", value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "country");

if (value)

xmlAddChild(psCIAddressNode, _msMetadataGetCharacterString(

namespace, "country", value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO",

"contactelectronicmailaddress");

if (value)

xmlAddChild(psCIAddressNode,

_msMetadataGetCharacterString(

namespace, "electronicMailAddress", value, ppsNsGco));

value = msOWSLookupMetadata(&(map->web.metadata), "MCFO", "onlineresource");

if (value) {

xmlNodePtr psORNode =

xmlNewChild(psCINode2, namespace, BAD_CAST "onlineResource", NULL);

xmlNodePtr 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) {

xmlNodePtr psNode = xmlNewNode(namespace, BAD_CAST "identificationInfo");

xmlNodePtr psDINode =

xmlNewChild(psNode, namespace, BAD_CAST "MD_DataIdentification", NULL);

xmlNewProp(psDINode, BAD_CAST "id", BAD_CAST layer->name);

xmlNodePtr psCNode =

xmlNewChild(psDINode, namespace, BAD_CAST "citation", NULL);

xmlNodePtr psCINode =

xmlNewChild(psCNode, namespace, BAD_CAST "CI_Citation", NULL);

const char *value = msOWSLookupMetadata(&(layer->metadata), "MCFGO", "title");

if (!value)

value = msOWSLookupMetadata(&(layer->metadata), "S", "offering_name");

xmlAddChild(psCINode, _msMetadataGetCharacterString(namespace, "title", value,

ppsNsGco));

xmlNodePtr psDNode = xmlNewChild(psCINode, namespace, BAD_CAST "date", NULL);

xmlNewNsProp(psDNode, *ppsNsGco, BAD_CAST "nilReason", BAD_CAST "missing");

value = msOWSLookupMetadata(&(layer->metadata), "MCFGO", "attribution_title");

if (value) {

xmlAddChild(psCINode,

_msMetadataGetCharacterString(namespace, "otherCitationDetails",

value, ppsNsGco));

}

value = msOWSLookupMetadata(&(layer->metadata), "MCFGO", "abstract");

if (!value)

value =

msOWSLookupMetadata(&(layer->metadata), "S", "offering_description");

xmlAddChild(psDINode, _msMetadataGetCharacterString(namespace, "abstract",

value, ppsNsGco));

value = msOWSLookupMetadata(&(layer->metadata), "MCFSGO", "keywordlist");

if (value) {

xmlNodePtr psKWNode =

xmlNewChild(psDINode, namespace, BAD_CAST "descriptiveKeywords", NULL);

xmlNodePtr psMDKNode =

xmlNewChild(psKWNode, namespace, BAD_CAST "MD_Keywords", NULL);

int n = 0;

char **tokens = msStringSplit(value, ',', &n);

if (tokens && n > 0) {

for (int 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) {

xmlNodePtr psNode =

xmlNewNode(namespace, BAD_CAST "spatialRepresentationInfo");

if (layer->type == MS_LAYER_RASTER) {

xmlNodePtr 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 {

xmlNodePtr psSRNode = xmlNewChild(

psNode, namespace, BAD_CAST "MD_VectorSpatialRepresentation", NULL);

xmlAddChild(psSRNode,

_msMetadataGetCodeList(namespace, "topologyLevel",

"MD_TopologyLevelCode", "geometryOnly"));

xmlNodePtr psGONode =

xmlNewChild(psSRNode, namespace, BAD_CAST "geometricObjects", NULL);

xmlNodePtr psGONode2 =

xmlNewChild(psGONode, namespace, BAD_CAST "MD_GeometricObjects", NULL);

const char *value;

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 = xmlNewNode(namespace, BAD_CAST "distributionInfo");

xmlNodePtr psMDNode =

xmlNewChild(psNode, namespace, BAD_CAST "MD_Distribution", NULL);

{

char *pszTmp =

msOWSGetOnlineResource(map, "MFCSGO", "onlineresource", cgi_request);

url = msEncodeHTMLEntities(pszTmp);

msFree(pszTmp);

}

/* gmd:distributor */

xmlNodePtr psDNode =

xmlNewChild(psMDNode, namespace, BAD_CAST "distributor", NULL);

xmlNodePtr psDNode2 =

xmlNewChild(psDNode, namespace, BAD_CAST "MD_Distributor", NULL);

xmlAddChild(psDNode2, _msMetadataGetContact(namespace, "distributorContact",

map, ppsNsGco));

/* gmd:transferOptions */

xmlNodePtr psTONode =

xmlNewChild(psMDNode, namespace, BAD_CAST "transferOptions", NULL);

xmlNodePtr 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 19139-1:2019 representation of layer metadata */

/************************************************************************/

static xmlNodePtr

msMetadataGetLayerMetadata(mapObj *map, metadataParamsObj *paramsObj,

cgiRequestObj *cgi_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);

// when checking a layer with clustering msLayerGetExtent does not have

// access to the source layer, so remove clustering first

if (layer->cluster.region) {

layer->cluster.region = NULL;

}

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) {

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(cgi_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, &psNsOws, &psNsXsi, &psNsGmd, &psNsGco);

}

if (psRootNode != NULL) {

xmlChar *xml_buffer = NULL;

int buffersize = 0;

xmlDocSetRootElement(xml_document, psRootNode);

msIO_setHeader("Content-type", "text/xml; charset=UTF-8");

msIO_sendHeaders();

msIOContext *context = NULL;

context = msIO_getHandler(stdout);

xmlDocDumpFormatMemoryEnc(xml_document, &xml_buffer, &buffersize, "UTF-8",

1);

msIO_contextWrite(context, xml_buffer, buffersize);

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;

}

#endif /* USE_LIBXML2 */

/************************************************************************/

/* 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);

}

/************************************************************************/

/* msMetadataSetParam */

/* */

/* Keep the first value supplied and ignore later duplicates. */

/* Consistent with msWFSSetParam() */

/************************************************************************/

int msMetadataSetParam(char **ppszOut, cgiRequestObj *request, int i,

const char *pszExpectedParamName) {

if (strcasecmp(request->ParamNames[i], pszExpectedParamName) == 0) {

if (*ppszOut == NULL)

*ppszOut = msStrdup(request->ParamValues[i]);

return 1;

}

return 0;

}

/************************************************************************/

/* msMetadataParseRequest */

/* */

/* Parse request into the params object. */

/************************************************************************/

static int msMetadataParseRequest(cgiRequestObj *request,

metadataParamsObj *metadataparams) {

if (!request || !metadataparams)

return MS_FAILURE;

if (request->NumParams > 0) {

for (int i = 0; i < request->NumParams; i++) {

if (request->ParamNames[i] && request->ParamValues[i]) {

if (msMetadataSetParam(&metadataparams->pszLayer, request, i,

"LAYER")) {

} else if (msMetadataSetParam(&metadataparams->pszOutputSchema, request,

i, "OUTPUTSCHEMA")) {

}

return MS_SUCCESS;

}

/************************************************************************/

/* msMetadataSetGetMetadataURL */

/* */

/* Parse request into the params object. */

/************************************************************************/

void msMetadataSetGetMetadataURL(layerObj *lp, const char *url) {

char *pszMetadataURL = NULL;

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