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); }