void mapcache_http_do_request_with_params(mapcache_context *ctx, mapcache_http *req, apr_table_t *params,
mapcache_buffer *data, apr_table_t *headers, long *http_code)
{
mapcache_http *request = mapcache_http_clone(ctx,req);
request->url = mapcache_http_build_url(ctx,req->url,params);
mapcache_http_do_request(ctx,request,data,headers, http_code);
}
/**
* \private \memberof mapcache_source_wms
* \sa mapcache_source::render_map()
*/
void _mapcache_source_wms_render_map(mapcache_context *ctx, mapcache_map *map)
{
mapcache_source_wms *wms = (mapcache_source_wms*)map->tileset->source;
mapcache_http *http;
apr_table_t *params = apr_table_clone(ctx->pool,wms->wms_default_params);
apr_table_setn(params,"BBOX",apr_psprintf(ctx->pool,"%f,%f,%f,%f",
map->extent.minx,map->extent.miny,map->extent.maxx,map->extent.maxy));
apr_table_setn(params,"WIDTH",apr_psprintf(ctx->pool,"%d",map->width));
apr_table_setn(params,"HEIGHT",apr_psprintf(ctx->pool,"%d",map->height));
apr_table_setn(params,"FORMAT","image/png");
apr_table_setn(params,"SRS",map->grid_link->grid->srs);
apr_table_overlap(params,wms->getmap_params,APR_OVERLAP_TABLES_SET);
if(map->dimensions && !apr_is_empty_table(map->dimensions)) {
const apr_array_header_t *elts = apr_table_elts(map->dimensions);
int i;
for(i=0; i<elts->nelts; i++) {
apr_table_entry_t entry = APR_ARRAY_IDX(elts,i,apr_table_entry_t);
/* set both DIM_key=val and key=val KVP params */
apr_table_setn(params,entry.key,entry.val);
if(strcasecmp(entry.key,"TIME") && strcasecmp(entry.key,"ELEVATION")) {
char *dim_name = apr_pstrcat(ctx->pool,"DIM_",entry.key,NULL);
apr_table_setn(params,dim_name,entry.val);
}
}
}
/* if the source has no LAYERS parameter defined, then use the tileset name
* as the LAYERS to request. When using mirror-mode, the source has no layers
* defined, it is added based on the incoming request
*/
if(!apr_table_get(params,"layers")) {
apr_table_set(params,"LAYERS",map->tileset->name);
}
map->encoded_data = mapcache_buffer_create(30000,ctx->pool);
http = mapcache_http_clone(ctx, wms->http);
http->url = mapcache_http_build_url(ctx,http->url,params);
mapcache_http_do_request(ctx,http,map->encoded_data,NULL,NULL);
GC_CHECK_ERROR(ctx);
if(!mapcache_imageio_is_valid_format(ctx,map->encoded_data)) {
char *returned_data = apr_pstrndup(ctx->pool,(char*)map->encoded_data->buf,map->encoded_data->size);
ctx->set_error(ctx, 502, "wms request for tileset %s returned an unsupported format:\n%s",
map->tileset->name, returned_data);
}
}
mapcache_http_response *mapcache_core_proxy_request(mapcache_context *ctx, mapcache_request_proxy *req_proxy)
{
mapcache_http *http;
mapcache_http_response *response = mapcache_http_response_create(ctx->pool);
response->data = mapcache_buffer_create(30000,ctx->pool);
http = req_proxy->http;
if(req_proxy->pathinfo) {
http = mapcache_http_clone(ctx,http);
if( (*(req_proxy->pathinfo)) == '/' ||
http->url[strlen(http->url)-1] == '/')
http->url = apr_pstrcat(ctx->pool,http->url,req_proxy->pathinfo,NULL);
else
http->url = apr_pstrcat(ctx->pool,http->url,"/",req_proxy->pathinfo,NULL);
}
mapcache_http_do_request_with_params(ctx,http,req_proxy->params,response->data,response->headers,&response->code);
if(response->code !=0 && GC_HAS_ERROR(ctx)) {
/* the http request was successful, but the server returned an error */
ctx->clear_errors(ctx);
}
/*remove some headers that should not be sent back to the client*/
apr_table_unset(response->headers,"Transfer-Encoding");
apr_table_unset(response->headers,"Connection");
return response;
}
void _mapcache_source_wms_query(mapcache_context *ctx, mapcache_feature_info *fi)
{
mapcache_map *map = (mapcache_map*)fi;
mapcache_http *http;
mapcache_source_wms *wms = (mapcache_source_wms*)map->tileset->source;
apr_table_t *params = apr_table_clone(ctx->pool,wms->wms_default_params);
apr_table_overlap(params,wms->getmap_params,0);
apr_table_setn(params,"BBOX",apr_psprintf(ctx->pool,"%f,%f,%f,%f",
map->extent.minx,map->extent.miny,map->extent.maxx,map->extent.maxy));
apr_table_setn(params,"REQUEST","GetFeatureInfo");
apr_table_setn(params,"WIDTH",apr_psprintf(ctx->pool,"%d",map->width));
apr_table_setn(params,"HEIGHT",apr_psprintf(ctx->pool,"%d",map->height));
apr_table_setn(params,"SRS",map->grid_link->grid->srs);
apr_table_setn(params,"X",apr_psprintf(ctx->pool,"%d",fi->i));
apr_table_setn(params,"Y",apr_psprintf(ctx->pool,"%d",fi->j));
apr_table_setn(params,"INFO_FORMAT",fi->format);
apr_table_overlap(params,wms->getfeatureinfo_params,0);
if(map->dimensions && !apr_is_empty_table(map->dimensions)) {
const apr_array_header_t *elts = apr_table_elts(map->dimensions);
int i;
for(i=0; i<elts->nelts; i++) {
apr_table_entry_t entry = APR_ARRAY_IDX(elts,i,apr_table_entry_t);
apr_table_setn(params,entry.key,entry.val);
}
}
fi->data = mapcache_buffer_create(30000,ctx->pool);
http = mapcache_http_clone(ctx, wms->http);
http->url = mapcache_http_build_url(ctx,http->url,params);
mapcache_http_do_request(ctx,http,fi->data,NULL,NULL);
GC_CHECK_ERROR(ctx);
}
