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service_wmts.c
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service_wmts.c
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/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: MapCache tile caching support file: WMTS service
* Author: Thomas Bonfort and the MapServer team.
*
******************************************************************************
* Copyright (c) 1996-2011 Regents of the University of Minnesota.
*
* 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
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include "mapcache.h"
#include <apr_strings.h>
#include <math.h>
#include <apr_tables.h>
#include "mapcache_services.h"
/** \addtogroup services */
/** @{ */
static ezxml_t _wmts_capabilities(mapcache_context *ctx, mapcache_cfg *cfg)
{
char *schemaLocation = "http://www.opengis.net/wmts/1.0 http://schemas.opengis.net/wmts/1.0/wmtsGetCapabilities_response.xsd";
ezxml_t node = ezxml_new("Capabilities");
ezxml_set_attr(node,"xmlns","http://www.opengis.net/wmts/1.0");
ezxml_set_attr(node,"xmlns:ows","http://www.opengis.net/ows/1.1");
ezxml_set_attr(node,"xmlns:xlink","http://www.w3.org/1999/xlink");
ezxml_set_attr(node,"xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
ezxml_set_attr(node,"xmlns:gml","http://www.opengis.net/gml");
if( apr_table_get(cfg->metadata,"inspire_profile") ) {
ezxml_set_attr(node,"xmlns:inspire_common","http://inspire.ec.europa.eu/schemas/common/1.0");
ezxml_set_attr(node,"xmlns:inspire_vs","http://inspire.ec.europa.eu/schemas/inspire_vs_ows11/1.0");
schemaLocation = apr_pstrcat(ctx->pool,schemaLocation," http://inspire.ec.europa.eu/schemas/inspire_vs_ows11/1.0 http://inspire.ec.europa.eu/schemas/inspire_vs_ows11/1.0/inspire_vs_ows_11.xsd",NULL);
}
ezxml_set_attr(node,"xsi:schemaLocation",schemaLocation);
ezxml_set_attr(node,"version","1.0.0");
return node;
}
int _wmts_service_identification_keywords(void *in, const char *key, const char *value) {
ezxml_t node = (ezxml_t )in;
if (!strcasecmp(key,"keyword")) {
ezxml_set_txt(ezxml_add_child(node,"ows:Keyword",0),value);
} else {
ezxml_set_txt(ezxml_add_child(node,key,0),value);
}
return 1;
}
static ezxml_t _wmts_service_identification(mapcache_context *ctx, mapcache_cfg *cfg)
{
const char *value;
ezxml_t node = ezxml_new("ows:ServiceIdentification");
value = apr_table_get(cfg->metadata,"title");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:Title",0),value);
value = apr_table_get(cfg->metadata,"abstract");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:Abstract",0),value);
value = apr_table_get(cfg->metadata,"keyword");
if(value) {
ezxml_t nodeKeywords = ezxml_new("ows:Keywords");
apr_table_do(_wmts_service_identification_keywords, nodeKeywords, cfg->metadata, "keyword", NULL);
ezxml_insert(nodeKeywords, node, 0);
}
ezxml_set_txt(ezxml_add_child(node,"ows:ServiceType",0),"OGC WMTS");
ezxml_set_txt(ezxml_add_child(node,"ows:ServiceTypeVersion",0),"1.0.0");
value = apr_table_get(cfg->metadata,"fees");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:Fees",0),value);
value = apr_table_get(cfg->metadata,"accessconstraints");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:AccessConstraints",0),value);
return node;
}
int _wmts_inspire_metadata_responselanguages(void *in, const char *key, const char *value) {
ezxml_t node = (ezxml_t )in;
ezxml_set_txt(ezxml_add_child(node,"inspire_common:Language",0),value);
return 1;
}
static ezxml_t _wmts_inspire_metadata(mapcache_context *ctx, mapcache_cfg *cfg)
{
ezxml_t extended = ezxml_new("inspire_vs:ExtendedCapabilities");
ezxml_t metadata;
ezxml_t metadataurl;
ezxml_t metadatatype;
ezxml_t langsupported;
ezxml_t langsupporteddefault;
ezxml_t langsupporteddefaultlang;
ezxml_t langresponse;
const char *value;
metadata = ezxml_add_child(extended,"inspire_common:MetadataUrl",0);
ezxml_set_attr(metadata,"xsi:type","inspire_common:resourceLocatorType");
metadataurl = ezxml_add_child(metadata, "inspire_common:URL", 0);
value = apr_table_get(cfg->metadata, "inspire_metadataurl");
if(value)
ezxml_set_txt(metadataurl, value);
metadatatype = ezxml_add_child(metadata, "inspire_common:MediaType", 0);
ezxml_set_txt(metadatatype, "application/vnd.iso.19139+xml");
langsupported = ezxml_add_child(extended, "inspire_common:SupportedLanguages", 0);
langsupporteddefault = ezxml_add_child(langsupported, "inspire_common:DefaultLanguage", 0);
langsupporteddefaultlang = ezxml_add_child(langsupporteddefault, "inspire_common:Language", 0);
value = apr_table_get(cfg->metadata, "defaultlanguage");
if(value)
ezxml_set_txt(langsupporteddefaultlang, apr_table_get(cfg->metadata, "defaultlanguage"));
langresponse = ezxml_add_child(extended, "inspire_common:ResponseLanguage", 0);
apr_table_do(_wmts_inspire_metadata_responselanguages, langresponse, cfg->metadata, "language", NULL);
return extended;
}
static ezxml_t _wmts_operations_metadata(mapcache_context *ctx, const char *onlineresource, const char *operationstr)
{
ezxml_t http;
ezxml_t dcp;
ezxml_t get;
ezxml_t constraint;
ezxml_t allowedvalues;
ezxml_t operation = ezxml_new("ows:Operation");
ezxml_set_attr(operation,"name",operationstr);
dcp = ezxml_add_child(operation,"ows:DCP",0);
http = ezxml_add_child(dcp,"ows:HTTP",0);
get = ezxml_add_child(http,"ows:Get",0);
ezxml_set_attr(get,"xlink:href",apr_pstrcat(ctx->pool,onlineresource,"wmts?",NULL));
constraint = ezxml_add_child(get,"ows:Constraint",0);
ezxml_set_attr(constraint,"name","GetEncoding");
allowedvalues = ezxml_add_child(constraint,"ows:AllowedValues",0);
ezxml_set_txt(ezxml_add_child(allowedvalues,"ows:Value",0),"KVP");
return operation;
}
static ezxml_t _wmts_service_contactinfo(mapcache_context *ctx, mapcache_cfg *cfg)
{
const char *value;
int addNode = 0;
ezxml_t nodeAddress;
ezxml_t nodeInfo = ezxml_new("ows:ContactInfo");
ezxml_t nodePhone = ezxml_new("ows:Phone");
value = apr_table_get(cfg->metadata,"contactphone");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodePhone,"ows:Voice",0),value);
}
value = apr_table_get(cfg->metadata,"contactfacsimile");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodePhone,"ows:Facsimile",0),value);
}
if( addNode == 1 )
ezxml_insert(nodePhone, nodeInfo, 0);
addNode = 0;
nodeAddress = ezxml_new("ows:Address");
value = apr_table_get(cfg->metadata,"contactorganization");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:DeliveryPoint",0),value);
}
value = apr_table_get(cfg->metadata,"contactcity");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:City",0),value);
}
value = apr_table_get(cfg->metadata,"contactstateorprovince");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:AdministrativeArea",0),value);
}
value = apr_table_get(cfg->metadata,"contactpostcode");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:PostalCode",0),value);
}
value = apr_table_get(cfg->metadata,"contactcountry");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:Country",0),value);
}
value = apr_table_get(cfg->metadata,"contactelectronicmailaddress");
if(value) {
addNode = 1;
ezxml_set_txt(ezxml_add_child(nodeAddress,"ows:ElectronicMailAddress",0),value);
}
if( addNode == 1 )
ezxml_insert(nodeAddress, nodeInfo, 0);
return nodeInfo;
}
static ezxml_t _wmts_service_contact(mapcache_context *ctx, mapcache_cfg *cfg)
{
const char *value;
ezxml_t node = ezxml_new("ows:ServiceContact");
value = apr_table_get(cfg->metadata,"contactname");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:IndividualName",0),value);
value = apr_table_get(cfg->metadata,"contactposition");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:PositionName",0),value);
ezxml_insert(_wmts_service_contactinfo(ctx,cfg),node,0);
return node;
}
static ezxml_t _wmts_service_provider(mapcache_context *ctx, mapcache_cfg *cfg)
{
const char *value;
ezxml_t node = ezxml_new("ows:ServiceProvider");
value = apr_table_get(cfg->metadata,"providername");
if(value)
ezxml_set_txt(ezxml_add_child(node,"ows:ProviderName",0),value);
value = apr_table_get(cfg->metadata,"providerurl");
if(value)
ezxml_set_attr(ezxml_add_child(node,"ows:ProviderSite",0),"xlink:href",value);
ezxml_insert(_wmts_service_contact(ctx,cfg),node,0);
return node;
}
void _create_capabilities_wmts(mapcache_context *ctx, mapcache_request_get_capabilities *req, char *url, char *path_info, mapcache_cfg *cfg)
{
const char *onlineresource;
mapcache_request_get_capabilities_wmts *request = (mapcache_request_get_capabilities_wmts*)req;
ezxml_t caps;
ezxml_t contents;
ezxml_t operations_metadata;
apr_hash_index_t *layer_index;
apr_hash_index_t *grid_index;
char *tmpcaps;
apr_table_t *requiredGrids = apr_table_make(ctx->pool, apr_hash_count(cfg->grids));
#ifdef DEBUG
if(request->request.request.type != MAPCACHE_REQUEST_GET_CAPABILITIES) {
ctx->set_error(ctx,500,"wrong wmts capabilities request");
return;
}
#endif
onlineresource = apr_table_get(cfg->metadata,"url");
if(!onlineresource) {
onlineresource = url;
}
request->request.mime_type = apr_pstrdup(ctx->pool,"application/xml");
caps = _wmts_capabilities(ctx,cfg);
ezxml_insert(_wmts_service_identification(ctx,cfg),caps,0);
ezxml_insert(_wmts_service_provider(ctx,cfg),caps,0);
operations_metadata = ezxml_add_child(caps,"ows:OperationsMetadata",0);
ezxml_insert(_wmts_operations_metadata(ctx,onlineresource,"GetCapabilities"),operations_metadata,0);
ezxml_insert(_wmts_operations_metadata(ctx,onlineresource,"GetTile"),operations_metadata,0);
ezxml_insert(_wmts_operations_metadata(ctx,onlineresource,"GetFeatureInfo"),operations_metadata,0);
/* @todo: support both, url and embed profile */
if( apr_table_get(cfg->metadata,"inspire_profile") )
ezxml_insert(_wmts_inspire_metadata(ctx,cfg),operations_metadata,0);
contents = ezxml_add_child(caps,"Contents",0);
layer_index = apr_hash_first(ctx->pool,cfg->tilesets);
while(layer_index) {
int i;
mapcache_tileset *tileset;
const void *key;
apr_ssize_t keylen;
ezxml_t layer;
const char *title;
const char *abstract;
const char *keywords;
ezxml_t style;
char *dimensionstemplate="";
ezxml_t resourceurl;
apr_hash_this(layer_index,&key,&keylen,(void**)&tileset);
layer = ezxml_add_child(contents,"Layer",0);
/* optional layer title */
title = apr_table_get(tileset->metadata,"title");
if(title) {
ezxml_set_txt(ezxml_add_child(layer,"ows:Title",0),title);
} else {
ezxml_set_txt(ezxml_add_child(layer,"ows:Title",0),tileset->name);
/* optional layer abstract */
}
abstract = apr_table_get(tileset->metadata,"abstract");
if(abstract) {
ezxml_set_txt(ezxml_add_child(layer,"ows:Abstract",0),abstract);
}
// optional layer keywords
// `>` suffix in name indicates that a table is expected instead of a string
// (see `parseMetadata()` in `configuration_xml.c`)
keywords = apr_table_get(tileset->metadata,"keywords>");
if (keywords) {
apr_table_t * contents = (apr_table_t *)keywords;
keywords = apr_table_get(contents,"keyword");
if (keywords) {
ezxml_t nodeKeywords = ezxml_new("ows:Keywords");
apr_table_do(_wmts_service_identification_keywords, nodeKeywords, contents, "keyword", NULL);
ezxml_insert(nodeKeywords, layer, 0);
}
}
if(tileset->wgs84bbox.minx != tileset->wgs84bbox.maxx) {
ezxml_t bbox = ezxml_add_child(layer,"ows:WGS84BoundingBox",0);
ezxml_set_txt(ezxml_add_child(bbox,"ows:LowerCorner",0),
apr_psprintf(ctx->pool,"%f %f",tileset->wgs84bbox.minx, tileset->wgs84bbox.miny));
ezxml_set_txt(ezxml_add_child(bbox,"ows:UpperCorner",0),
apr_psprintf(ctx->pool,"%f %f",tileset->wgs84bbox.maxx, tileset->wgs84bbox.maxy));
}
ezxml_set_txt(ezxml_add_child(layer,"ows:Identifier",0),tileset->name);
style = ezxml_add_child(layer,"Style",0);
ezxml_set_attr(style,"isDefault","true");
ezxml_set_txt(ezxml_add_child(style,"ows:Identifier",0),"default");
if(tileset->format && tileset->format->mime_type)
ezxml_set_txt(ezxml_add_child(layer,"Format",0),tileset->format->mime_type);
else
ezxml_set_txt(ezxml_add_child(layer,"Format",0),"image/unknown");
if(tileset->dimensions) {
for(i=0; i<tileset->dimensions->nelts; i++) {
apr_array_header_t *values;
int value_idx;
mapcache_dimension *dimension = APR_ARRAY_IDX(tileset->dimensions,i,mapcache_dimension*);
ezxml_t dim = ezxml_add_child(layer,"Dimension",0);
ezxml_set_txt(ezxml_add_child(dim,"ows:Identifier",0),dimension->name);
ezxml_set_txt(ezxml_add_child(dim,"Default",0),dimension->default_value);
if(dimension->unit) {
ezxml_set_txt(ezxml_add_child(dim,"UOM",0),dimension->unit);
}
values = dimension->get_all_ogc_formatted_entries(ctx,dimension,tileset,NULL,NULL);
for(value_idx=0;value_idx<values->nelts;value_idx++) {
char *idval = APR_ARRAY_IDX(values,value_idx,char*);
ezxml_set_txt(ezxml_add_child(dim,"Value",0),idval);
}
dimensionstemplate = apr_pstrcat(ctx->pool,dimensionstemplate,"{",dimension->name,"}/",NULL);
}
}
if(tileset->source && tileset->source->info_formats) {
int i;
for(i=0; i<tileset->source->info_formats->nelts; i++) {
char *iformat = APR_ARRAY_IDX(tileset->source->info_formats,i,char*);
ezxml_set_txt(ezxml_add_child(layer,"InfoFormat",0),iformat);
}
}
for(i=0; i<tileset->grid_links->nelts; i++) {
mapcache_grid_link *grid_link = APR_ARRAY_IDX(tileset->grid_links,i,mapcache_grid_link*);
ezxml_t tmsetlnk = ezxml_add_child(layer,"TileMatrixSetLink",0);
ezxml_set_txt(ezxml_add_child(tmsetlnk,"TileMatrixSet",0),grid_link->grid->name);
/*
* remember TileMatrixSetLinks
*/
apr_table_setn(requiredGrids, grid_link->grid->name, "true");
if(grid_link->restricted_extent) {
ezxml_t limits = ezxml_add_child(tmsetlnk,"TileMatrixSetLimits",0);
int j;
for(j=0; j<grid_link->grid->nlevels; j++) {
ezxml_t matrixlimits = ezxml_add_child(limits,"TileMatrixLimits",0);
ezxml_set_txt(ezxml_add_child(matrixlimits,"TileMatrix",0),
apr_psprintf(ctx->pool,"%s:%d",grid_link->grid->name,j));
ezxml_set_txt(ezxml_add_child(matrixlimits,"MinTileRow",0),
apr_psprintf(ctx->pool,"%d",grid_link->grid_limits[j].miny));
ezxml_set_txt(ezxml_add_child(matrixlimits,"MaxTileRow",0),
apr_psprintf(ctx->pool,"%d",grid_link->grid_limits[j].maxy-1));
ezxml_set_txt(ezxml_add_child(matrixlimits,"MinTileCol",0),
apr_psprintf(ctx->pool,"%d",grid_link->grid_limits[j].minx));
ezxml_set_txt(ezxml_add_child(matrixlimits,"MaxTileCol",0),
apr_psprintf(ctx->pool,"%d",grid_link->grid_limits[j].maxx-1));
}
}
/*
* gaia gis chokes if this is added to the capabilities doc,
* so disable it for now
*
double *gbbox = grid_link->restricted_extent?grid_link->restricted_extent:grid_link->grid->extent;
ezxml_t bbox = ezxml_add_child(layer,"ows:BoundingBox",0);
ezxml_set_txt(ezxml_add_child(bbox,"ows:LowerCorner",0),
apr_psprintf(ctx->pool,"%f %f",gbbox[0], gbbox[1]));
ezxml_set_txt(ezxml_add_child(bbox,"ows:UpperCorner",0),
apr_psprintf(ctx->pool,"%f %f",gbbox[2], gbbox[3]));
ezxml_set_attr(bbox,"crs",mapcache_grid_get_crs(ctx,grid_link->grid));
*/
}
if(tileset->source && tileset->source->info_formats) {
int i;
for(i=0; i<tileset->source->info_formats->nelts; i++) {
char *iformat = APR_ARRAY_IDX(tileset->source->info_formats,i,char*);
ezxml_t resourceurl;
resourceurl = ezxml_add_child(layer,"ResourceURL",0);
ezxml_set_attr(resourceurl,"format",iformat);
ezxml_set_attr(resourceurl,"resourceType","FeatureInfo");
ezxml_set_attr(resourceurl,"template",
apr_pstrcat(ctx->pool,onlineresource,"wmts/1.0.0/",tileset->name,"/default/",
dimensionstemplate,"{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}/{J}/{I}.",apr_psprintf(ctx->pool,"%d",i),NULL));
}
}
resourceurl = ezxml_add_child(layer,"ResourceURL",0);
if(tileset->format && tileset->format->mime_type)
ezxml_set_attr(resourceurl,"format",tileset->format->mime_type);
else
ezxml_set_attr(resourceurl,"format","image/unknown");
ezxml_set_attr(resourceurl,"resourceType","tile");
ezxml_set_attr(resourceurl,"template",
apr_pstrcat(ctx->pool,onlineresource,"wmts/1.0.0/",tileset->name,"/default/",
dimensionstemplate,"{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.",
((tileset->format)?tileset->format->extension:"xxx"),NULL));
layer_index = apr_hash_next(layer_index);
}
grid_index = apr_hash_first(ctx->pool,cfg->grids);
while(grid_index) {
mapcache_grid *grid;
const void *key;
apr_ssize_t keylen;
int level;
const char *WellKnownScaleSet;
ezxml_t tmset;
ezxml_t bbox;
apr_hash_this(grid_index,&key,&keylen,(void**)&grid);
/*
* Skip grids which are not configures at tileset level
*/
if( !apr_table_get(requiredGrids, grid->name) ) {
grid_index = apr_hash_next(grid_index);
continue;
}
WellKnownScaleSet = apr_table_get(grid->metadata,"WellKnownScaleSet");
tmset = ezxml_add_child(contents,"TileMatrixSet",0);
ezxml_set_txt(ezxml_add_child(tmset,"ows:Identifier",0),grid->name);
bbox = ezxml_add_child(tmset,"ows:BoundingBox",0);
if(mapcache_is_axis_inverted(grid->srs)) {
ezxml_set_txt(ezxml_add_child(bbox,"ows:LowerCorner",0),apr_psprintf(ctx->pool,"%f %f",
grid->extent.miny, grid->extent.minx));
ezxml_set_txt(ezxml_add_child(bbox,"ows:UpperCorner",0),apr_psprintf(ctx->pool,"%f %f",
grid->extent.maxy, grid->extent.maxx));
} else {
ezxml_set_txt(ezxml_add_child(bbox,"ows:LowerCorner",0),apr_psprintf(ctx->pool,"%f %f",
grid->extent.minx, grid->extent.miny));
ezxml_set_txt(ezxml_add_child(bbox,"ows:UpperCorner",0),apr_psprintf(ctx->pool,"%f %f",
grid->extent.maxx, grid->extent.maxy));
}
ezxml_set_attr(bbox,"crs",mapcache_grid_get_crs(ctx,grid));
ezxml_set_txt(ezxml_add_child(tmset,"ows:SupportedCRS",0),mapcache_grid_get_crs(ctx,grid));
if(WellKnownScaleSet) {
ezxml_set_txt(ezxml_add_child(tmset,"WellKnownScaleSet",0),WellKnownScaleSet);
}
for(level=0; level<grid->nlevels; level++) {
double scaledenom,tlx,tly;
mapcache_grid_level *glevel = grid->levels[level];
ezxml_t tm = ezxml_add_child(tmset,"TileMatrix",0);
ezxml_set_txt(ezxml_add_child(tm,"ows:Identifier",0),apr_psprintf(ctx->pool,"%d",level));
scaledenom = glevel->resolution * mapcache_meters_per_unit[grid->unit] / 0.00028;
ezxml_set_txt(ezxml_add_child(tm,"ScaleDenominator",0),apr_psprintf(ctx->pool,"%.20f",scaledenom));
switch(grid->origin) {
case MAPCACHE_GRID_ORIGIN_TOP_LEFT:
tlx = grid->extent.minx;
tly = grid->extent.maxy;
break;
case MAPCACHE_GRID_ORIGIN_BOTTOM_LEFT:
tlx = grid->extent.minx;
tly = grid->extent.miny + glevel->maxy * glevel->resolution * grid->tile_sy;
break;
case MAPCACHE_GRID_ORIGIN_BOTTOM_RIGHT:
case MAPCACHE_GRID_ORIGIN_TOP_RIGHT:
default:
ctx->set_error(ctx,500,"origin not implemented");
return;
}
if(mapcache_is_axis_inverted(grid->srs)) {
ezxml_set_txt(ezxml_add_child(tm,"TopLeftCorner",0),apr_psprintf(ctx->pool,"%f %f",
tly,tlx));
} else {
ezxml_set_txt(ezxml_add_child(tm,"TopLeftCorner",0),apr_psprintf(ctx->pool,"%f %f",
tlx,tly));
}
ezxml_set_txt(ezxml_add_child(tm,"TileWidth",0),apr_psprintf(ctx->pool,"%d",grid->tile_sx));
ezxml_set_txt(ezxml_add_child(tm,"TileHeight",0),apr_psprintf(ctx->pool,"%d",grid->tile_sy));
ezxml_set_txt(ezxml_add_child(tm,"MatrixWidth",0),apr_psprintf(ctx->pool,"%d",glevel->maxx));
ezxml_set_txt(ezxml_add_child(tm,"MatrixHeight",0),apr_psprintf(ctx->pool,"%d",glevel->maxy));
}
grid_index = apr_hash_next(grid_index);
}
tmpcaps = ezxml_toxml(caps);
ezxml_free(caps);
request->request.capabilities = apr_pstrcat(ctx->pool,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",tmpcaps,NULL);
free(tmpcaps);
}
/**
* \brief parse a WMTS request
* \private \memberof mapcache_service_wmts
* \sa mapcache_service::parse_request()
*/
void _mapcache_service_wmts_parse_request(mapcache_context *ctx, mapcache_service *this, mapcache_request **request,
const char *pathinfo, apr_table_t *params, mapcache_cfg *config)
{
const char *str, *service = NULL, *style = NULL, *version = NULL, *layer = NULL, *matrixset = NULL,
#ifdef PEDANTIC_WMTS_FORMAT_CHECK
*format = NULL,
#endif
*matrix = NULL, *tilecol = NULL, *tilerow = NULL, *extension = NULL,
*infoformat = NULL, *fi_i = NULL, *fi_j = NULL;
apr_table_t *dimtable = NULL;
mapcache_extent *extent = NULL;
mapcache_tileset *tileset = NULL;
int row,col,level,x,y;
int kvp = 0;
mapcache_grid_link *grid_link;
char *endptr;
service = apr_table_get(params,"SERVICE");
if(service) {
/*KVP Parsing*/
kvp = 1;
if( strcasecmp(service,"wmts") ) {
ctx->set_error(ctx,400,"received wmts request with invalid service param %s", service);
ctx->set_exception(ctx,"InvalidParameterValue","service");
return;
}
str = apr_table_get(params,"REQUEST");
if(!str) {
ctx->set_error(ctx, 400, "received wmts request with no request");
ctx->set_exception(ctx,"MissingParameterValue","request");
return;
}
if( ! strcasecmp(str,"getcapabilities") ) {
mapcache_request_get_capabilities_wmts *req = (mapcache_request_get_capabilities_wmts*)
apr_pcalloc(ctx->pool,sizeof(mapcache_request_get_capabilities_wmts));
req->request.request.type = MAPCACHE_REQUEST_GET_CAPABILITIES;
*request = (mapcache_request*)req;
return;
} else if( ! strcasecmp(str,"gettile") || ! strcasecmp(str,"getfeatureinfo")) {
/* extract our wnated parameters, they will be validated later on */
tilerow = apr_table_get(params,"TILEROW");
style = apr_table_get(params,"STYLE");
if(!style || !*style) style = "default";
tilecol = apr_table_get(params,"TILECOL");
#ifdef PEDANTIC_WMTS_FORMAT_CHECK
format = apr_table_get(params,"FORMAT");
#endif
layer = apr_table_get(params,"LAYER");
if(!layer) { /*we have to validate this now in order to be able to extract dimensions*/
ctx->set_error(ctx, 400, "received wmts request with no layer");
ctx->set_exception(ctx,"MissingParameterValue","layer");
return;
} else {
tileset = mapcache_configuration_get_tileset(config,layer);
if(!tileset) {
ctx->set_error(ctx, 400, "received wmts request with invalid layer %s",layer);
ctx->set_exception(ctx,"InvalidParameterValue","layer");
return;
}
}
matrixset = apr_table_get(params,"TILEMATRIXSET");
matrix = apr_table_get(params,"TILEMATRIX");
if(tileset->dimensions) {
int i;
dimtable = apr_table_make(ctx->pool,tileset->dimensions->nelts);
for(i=0; i<tileset->dimensions->nelts; i++) {
mapcache_dimension *dimension = APR_ARRAY_IDX(tileset->dimensions,i,mapcache_dimension*);
const char *value;
if((value = apr_table_get(params,dimension->name)) != NULL) {
apr_table_set(dimtable,dimension->name,value);
}
}
}
if(!strcasecmp(str,"getfeatureinfo")) {
infoformat = apr_table_get(params,"INFOFORMAT");
fi_i = apr_table_get(params,"I");
fi_j = apr_table_get(params,"J");
if(!infoformat || !fi_i || !fi_j) {
ctx->set_error(ctx, 400, "received wmts featureinfo request with missing infoformat, i or j");
if(!infoformat)
ctx->set_exception(ctx,"MissingParameterValue","infoformat");
if(!fi_i)
ctx->set_exception(ctx,"MissingParameterValue","i");
if(!fi_j)
ctx->set_exception(ctx,"MissingParameterValue","j");
return;
}
}
} else {
ctx->set_error(ctx, 501, "received wmts request with invalid request %s",str);
ctx->set_exception(ctx,"InvalidParameterValue","request");
return;
}
} else {
char *key, *last;
for (key = apr_strtok(apr_pstrdup(ctx->pool,pathinfo), "/", &last); key != NULL;
key = apr_strtok(NULL, "/", &last)) {
if(!version) {
version = key;
if(strcmp(version,"1.0.0")) {
ctx->set_error(ctx,404, "received wmts request with invalid version \"%s\" (expecting \"1.0.0\")", version);
return;
}
continue;
}
if(!layer) {
if(!strcmp(key,"WMTSCapabilities.xml")) {
mapcache_request_get_capabilities_wmts *req = (mapcache_request_get_capabilities_wmts*)
apr_pcalloc(ctx->pool,sizeof(mapcache_request_get_capabilities_wmts));
req->request.request.type = MAPCACHE_REQUEST_GET_CAPABILITIES;
*request = (mapcache_request*)req;
return;
}
layer = key;
tileset = mapcache_configuration_get_tileset(config,layer);
if(!tileset) {
ctx->set_error(ctx, 404, "received wmts request with invalid layer %s",layer);
return;
}
continue;
}
if(!style) {
style = key;
continue;
}
if(tileset->dimensions) {
int i;
if(!dimtable)
dimtable = apr_table_make(ctx->pool,tileset->dimensions->nelts);
i = apr_table_elts(dimtable)->nelts;
if(i != tileset->dimensions->nelts) {
/*we still have some dimensions to parse*/
mapcache_dimension *dimension = APR_ARRAY_IDX(tileset->dimensions,i,mapcache_dimension*);
apr_table_set(dimtable,dimension->name,key);
continue;
}
}
if(!matrixset) {
matrixset = key;
continue;
}
if(!matrix) {
matrix=key;
continue;
}
if(!tilerow) {
tilerow = key;
continue;
}
if(!tilecol) {
/*if we have a get tile request this is the last element of the uri, and it will also contain the file extension*/
/*split the string at the first '.'*/
char *charptr = key;
while(*charptr && *charptr != '.') charptr++;
if(*charptr == '.') {
/*replace '.' with '\0' and advance*/
*charptr++ = '\0';
tilecol = key;
extension = charptr;
} else {
tilecol = key;
}
continue;
}
if(!fi_j) {
fi_j = key;
continue;
}
if(!fi_i) {
/*split the string at the first '.'*/
char *charptr = key;
while(*charptr && *charptr != '.') charptr++;
/*replace '.' with '\0' and advance*/
*charptr++ = '\0';
fi_i = key;
extension = charptr;
continue;
}
ctx->set_error(ctx,404,"received request with trailing data starting with %s",key);
return;
}
}
grid_link = NULL;
if(!style || strcmp(style,"default")) {
ctx->set_error(ctx,404, "received request with invalid style \"%s\" (expecting \"default\")",style);
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","style");
return;
}
if(!matrixset) {
ctx->set_error(ctx, 404, "received wmts request with no TILEMATRIXSET");
if(kvp) ctx->set_exception(ctx,"MissingParameterValue","TileMatrixSet");
return;
} else {
int i;
for(i=0; i<tileset->grid_links->nelts; i++) {
mapcache_grid_link *sgrid = APR_ARRAY_IDX(tileset->grid_links,i,mapcache_grid_link*);
if(strcmp(sgrid->grid->name,matrixset)) continue;
grid_link = sgrid;
break;
}
if(!grid_link) {
ctx->set_error(ctx, 404, "received wmts request with invalid TILEMATRIXSET %s",matrixset);
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","TileMatrixSet");
return;
}
}
if(!matrix) {
ctx->set_error(ctx, 404, "received wmts request with no TILEMATRIX");
if(kvp) ctx->set_exception(ctx,"MissingParameterValue","TileMatrix");
return;
} else {
char *endptr;
level = (int)strtol(matrix,&endptr,10);
if(*endptr != 0 || level < grid_link->minz || level >= grid_link->maxz) {
ctx->set_error(ctx, 404, "received wmts request with invalid TILEMATRIX %s", matrix);
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","TileMatrix");
return;
}
}
if(!tilerow) {
ctx->set_error(ctx, 404, "received wmts request with no TILEROW");
if(kvp) ctx->set_exception(ctx,"MissingParameterValue","TileRow");
return;
} else {
char *endptr;
row = (int)strtol(tilerow,&endptr,10);
if(*endptr != 0 || row < 0) {
ctx->set_error(ctx, 404, "received wmts request with invalid TILEROW %s",tilerow);
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","TileRow");
return;
}
}
if(!tilecol) {
ctx->set_error(ctx, 404, "received wmts request with no TILECOL");
if(kvp) ctx->set_exception(ctx,"MissingParameterValue","TileCol");
return;
} else {
char *endptr;
col = (int)strtol(tilecol,&endptr,10);
if(endptr == tilecol || col < 0) {
ctx->set_error(ctx, 404, "received wmts request with invalid TILECOL %s",tilecol);
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","TileCol");
return;
}
}
/* compute the x,y of the request depending on the grid origin */
switch(grid_link->grid->origin) {
case MAPCACHE_GRID_ORIGIN_BOTTOM_LEFT:
x = col;
y = grid_link->grid->levels[level]->maxy - row - 1;
break;
case MAPCACHE_GRID_ORIGIN_TOP_LEFT:
x = col;
y = row;
break;
case MAPCACHE_GRID_ORIGIN_BOTTOM_RIGHT:
x = grid_link->grid->levels[level]->maxx - col - 1;
y = grid_link->grid->levels[level]->maxy - row - 1;
break;
case MAPCACHE_GRID_ORIGIN_TOP_RIGHT:
x = grid_link->grid->levels[level]->maxx - col - 1;
y = row;
break;
default:
ctx->set_error(ctx,500,"BUG: invalid grid origin");
return;
}
if(fi_j) {
//we need the extent of the request, compute it here
extent = apr_pcalloc(ctx->pool, sizeof(mapcache_extent));
mapcache_grid_get_tile_extent(ctx,grid_link->grid,x,y,level,extent);
}
if(!fi_j) { /*we have a getTile request*/
#ifdef PEDANTIC_WMTS_FORMAT_CHECK
if(tileset->format) {
if(!format && !extension) {
ctx->set_error(ctx, 404, "received wmts request with no format");
return;
} else {
if(format && tileset->format && strcmp(format,tileset->format->mime_type)) {
ctx->set_error(ctx, 404, "received wmts request with invalid format \"%s\" (expecting %s)",
format,tileset->format->mime_type);
return;
}
if(extension && tileset->format && strcmp(extension,tileset->format->extension)) {
ctx->set_error(ctx, 404, "received wmts request with invalid extension \"%s\" (expecting %s)",
extension,tileset->format->extension);
return;
}
}
}
#endif
mapcache_request_get_tile *req = (mapcache_request_get_tile*)apr_pcalloc(
ctx->pool,sizeof(mapcache_request_get_tile));
((mapcache_request*)req)->type = MAPCACHE_REQUEST_GET_TILE;
req->ntiles = 1;
req->tiles = (mapcache_tile**)apr_pcalloc(ctx->pool,req->ntiles * sizeof(mapcache_tile*));
req->tiles[0] = mapcache_tileset_tile_create(ctx->pool, tileset, grid_link);
if(!req->tiles[0]) {
ctx->set_error(ctx, 500, "failed to allocate tile");
if(kvp) ctx->set_exception(ctx,"NoApplicableCode","%s","");
return;
}
/*populate dimensions*/
if(tileset->dimensions) {
int d;
for(d=0; d<tileset->dimensions->nelts; d++) {
mapcache_dimension *dimension = APR_ARRAY_IDX(tileset->dimensions,d,mapcache_dimension*);
const char *value = apr_table_get(dimtable,dimension->name);
if(value) {
mapcache_tile_set_requested_dimension(ctx,req->tiles[0],dimension->name,value);
}
}
}
req->tiles[0]->z = level;
req->tiles[0]->x = x;
req->tiles[0]->y = y;
/* no need to validate all the tiles as they all have the same x,y,z */
mapcache_tileset_tile_validate_z(ctx,req->tiles[0]);
if(GC_HAS_ERROR(ctx)) {
if(kvp) ctx->set_exception(ctx,"InvalidParameterValue","TileMatrix");
return;
}
mapcache_tileset_tile_validate_x(ctx,req->tiles[0]);
if(GC_HAS_ERROR(ctx)) {
if(kvp) ctx->set_exception(ctx,"TileOutOfRange","TileCol");
return;
}
mapcache_tileset_tile_validate_y(ctx,req->tiles[0]);
if(GC_HAS_ERROR(ctx)) {
if(kvp) ctx->set_exception(ctx,"TileOutOfRange","TileRow");
return;
}
*request = (mapcache_request*)req;
return;
} else { /* we have a featureinfo request */
mapcache_request_get_feature_info *req_fi;
mapcache_feature_info *fi;
if(!fi_i || (!infoformat && !extension)) {
ctx->set_error(ctx,400,"received wmts featureinfo request with missing i,j, or format");
return;
}
if(!tileset->source || !tileset->source->info_formats) {
ctx->set_error(ctx,400,"tileset %s does not support featureinfo requests", tileset->name);
if(kvp) ctx->set_exception(ctx,"OperationNotSupported","%s","");
return;
}
req_fi = (mapcache_request_get_feature_info*)apr_pcalloc(
ctx->pool, sizeof(mapcache_request_get_feature_info));
req_fi->request.type = MAPCACHE_REQUEST_GET_FEATUREINFO;
fi = mapcache_tileset_feature_info_create(ctx->pool, tileset, grid_link);
req_fi->fi = fi;
if(infoformat) {
fi->format = (char*)infoformat;
}
if(extension) {
int fi_index = (int)strtol(extension,&endptr,10);
if(endptr == extension || fi_index < 0 || fi_index >= tileset->source->info_formats->nelts) {
ctx->set_error(ctx, 404, "received wmts featureinfo request with invalid extension %s",extension);
return;
}
fi->format = APR_ARRAY_IDX(tileset->source->info_formats,fi_index,char*);
}
fi->i = (int)strtol(fi_i,&endptr,10);
if(*endptr != 0 || fi->i < 0 || fi->i >= grid_link->grid->tile_sx) {
ctx->set_error(ctx, 404, "received wmts featureinfo request with invalid I %s",fi_i);
if(kvp) ctx->set_exception(ctx,"PointIJOutOfRange","i");
return;
}
fi->j = (int)strtol(fi_j,&endptr,10);
if(*endptr != 0 || fi->j < 0 || fi->j >= grid_link->grid->tile_sy) {
ctx->set_error(ctx, 404, "received wmts featureinfo request with invalid J %s",fi_j);
if(kvp) ctx->set_exception(ctx,"PointIJOutOfRange","j");
return;
}
fi->map.width = grid_link->grid->tile_sx;
fi->map.height = grid_link->grid->tile_sy;
if(tileset->dimensions) {
int d;
for(d=0; d<tileset->dimensions->nelts; d++) {
mapcache_dimension *dimension = APR_ARRAY_IDX(tileset->dimensions,d,mapcache_dimension*);
const char *value = apr_table_get(dimtable,dimension->name);
if(value) {
mapcache_map_set_requested_dimension(ctx,&fi->map,dimension->name,value);
}
}