void parseTileset(mapcache_context *ctx, ezxml_t node, mapcache_cfg *config)
{
char *name = NULL;
mapcache_tileset *tileset = NULL;
ezxml_t cur_node;
char* value;
int havewgs84bbox=0;
if(config->mode == MAPCACHE_MODE_NORMAL) {
name = (char*)ezxml_attr(node,"name");
} else {
name = "mirror";
}
if(!name || !strlen(name)) {
ctx->set_error(ctx, 400, "mandatory attribute \"name\" not found in <tileset>");
return;
} else {
name = apr_pstrdup(ctx->pool, name);
/* check we don't already have a cache defined with this name */
if(mapcache_configuration_get_tileset(config, name)) {
ctx->set_error(ctx, 400, "duplicate tileset with name \"%s\"",name);
return;
}
}
tileset = mapcache_tileset_create(ctx);
tileset->name = name;
if ((cur_node = ezxml_child(node,"read-only")) != NULL) {
if(cur_node->txt && !strcmp(cur_node->txt,"true"))
tileset->read_only = 1;
}
if ((cur_node = ezxml_child(node,"metadata")) != NULL) {
parseMetadata(ctx, cur_node, tileset->metadata);
GC_CHECK_ERROR(ctx);
}
if ((value = (char*)apr_table_get(tileset->metadata,"wgs84boundingbox")) != NULL) {
double *values;
int nvalues;
value = apr_pstrdup(ctx->pool,value);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, value, NULL, &values, &nvalues) ||
nvalues != 4) {
ctx->set_error(ctx, 400, "failed to parse extent array %s."
"(expecting 4 space separated numbers, got %d (%f %f %f %f)"
"eg <wgs84bbox>-180 -90 180 90</wgs84bbox>",
value,nvalues,values[0],values[1],values[2],values[3]);
return;
}
tileset->wgs84bbox.minx = values[0];
tileset->wgs84bbox.miny = values[1];
tileset->wgs84bbox.maxx = values[2];
tileset->wgs84bbox.maxy = values[3];
havewgs84bbox = 1;
}
for(cur_node = ezxml_child(node,"grid"); cur_node; cur_node = cur_node->next) {
mapcache_grid *grid;
mapcache_grid_link *gridlink;
char *restrictedExtent = NULL, *sTolerance = NULL;
mapcache_extent *extent;
int tolerance;
if (tileset->grid_links == NULL) {
tileset->grid_links = apr_array_make(ctx->pool,1,sizeof(mapcache_grid_link*));
}
grid = mapcache_configuration_get_grid(config, cur_node->txt);
if(!grid) {
ctx->set_error(ctx, 400, "tileset \"%s\" references grid \"%s\","
" but it is not configured", name, cur_node->txt);
return;
}
gridlink = apr_pcalloc(ctx->pool,sizeof(mapcache_grid_link));
gridlink->grid = grid;
gridlink->minz = 0;
gridlink->maxz = grid->nlevels;
gridlink->grid_limits = (mapcache_extent_i*)apr_pcalloc(ctx->pool,grid->nlevels*sizeof(mapcache_extent_i));
gridlink->outofzoom_strategy = MAPCACHE_OUTOFZOOM_NOTCONFIGURED;
gridlink->intermediate_grids = apr_array_make(ctx->pool,1,sizeof(mapcache_grid_link*));
restrictedExtent = (char*)ezxml_attr(cur_node,"restricted_extent");
if(restrictedExtent) {
int nvalues;
double *values;
restrictedExtent = apr_pstrdup(ctx->pool,restrictedExtent);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, restrictedExtent, NULL, &values, &nvalues) ||
nvalues != 4) {
ctx->set_error(ctx, 400, "failed to parse extent array %s."
"(expecting 4 space separated numbers, "
"eg <grid restricted_extent=\"-180 -90 180 90\">foo</grid>",
restrictedExtent);
return;
}
gridlink->restricted_extent = (mapcache_extent*) apr_pcalloc(ctx->pool, sizeof(mapcache_extent));
gridlink->restricted_extent->minx = values[0];
gridlink->restricted_extent->miny = values[1];
gridlink->restricted_extent->maxx = values[2];
gridlink->restricted_extent->maxy = values[3];
extent = gridlink->restricted_extent;
} else {
extent = &grid->extent;
}
tolerance = 5;
sTolerance = (char*)ezxml_attr(cur_node,"tolerance");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid tolerance %s (expecting a positive integer)",
sTolerance);
return;
}
}
sTolerance = (char*)ezxml_attr(cur_node,"use_wms_intermediate_resolutions");
if(sTolerance && !strcmp(sTolerance,"true")) {
mapcache_grid_link *intermediate_gridlink = apr_pcalloc(ctx->pool,sizeof(mapcache_grid_link));
APR_ARRAY_PUSH(gridlink->intermediate_grids,mapcache_grid_link*) = intermediate_gridlink;
}
mapcache_grid_compute_limits(grid,extent,gridlink->grid_limits,tolerance);
sTolerance = (char*)ezxml_attr(cur_node,"minzoom");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid minzoom %s (expecting a positive integer)",
sTolerance);
return;
}
gridlink->minz = tolerance;
}
sTolerance = (char*)ezxml_attr(cur_node,"maxzoom");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid maxzoom %s (expecting a positive integer)",
sTolerance);
return;
}
gridlink->maxz = tolerance + 1;
}
if(gridlink->minz<0 || gridlink->maxz>grid->nlevels || gridlink->minz>=gridlink->maxz) {
ctx->set_error(ctx, 400, "invalid grid maxzoom/minzoom %d/%d", gridlink->minz,gridlink->maxz);
return;
}
sTolerance = (char*)ezxml_attr(cur_node,"max-cached-zoom");
/* RFC97 implementation: check for a maximum zoomlevel to cache */
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid max-cached-zoom %s (expecting a positive integer)",
sTolerance);
return;
}
if(tolerance > gridlink->maxz) {
ctx->set_error(ctx, 400, "failed to parse grid max-cached-zoom %s (max cached zoom is greater than grid's max zoom)",
sTolerance);
return;
}
gridlink->max_cached_zoom = tolerance;
/* default to reassembling */
gridlink->outofzoom_strategy = MAPCACHE_OUTOFZOOM_REASSEMBLE;
sTolerance = (char*)ezxml_attr(cur_node,"out-of-zoom-strategy");
if(sTolerance) {
if(!strcasecmp(sTolerance,"reassemble")) {
gridlink->outofzoom_strategy = MAPCACHE_OUTOFZOOM_REASSEMBLE;
}
else if(!strcasecmp(sTolerance,"proxy")) {
gridlink->outofzoom_strategy = MAPCACHE_OUTOFZOOM_PROXY;
} else {
ctx->set_error(ctx, 400, "failed to parse grid out-of-zoom-strategy %s (expecting \"reassemble\" or \"proxy\")",
sTolerance);
return;
}
}
}
/* compute wgs84 bbox if it wasn't supplied already */
if(!havewgs84bbox && !strcasecmp(grid->srs,"EPSG:4326")) {
tileset->wgs84bbox = *extent;
}
if(gridlink->intermediate_grids->nelts > 0) {
double factor = 0.5, unitheight,unitwidth;
int i;
mapcache_grid_link *igl = APR_ARRAY_IDX(gridlink->intermediate_grids, 0, mapcache_grid_link*);
igl->restricted_extent = gridlink->restricted_extent;
igl->minz = gridlink->minz;
igl->max_cached_zoom = gridlink->max_cached_zoom - 1;
igl->maxz = gridlink->maxz - 1;
igl->outofzoom_strategy = gridlink->outofzoom_strategy;
igl->grid = mapcache_grid_create(ctx->pool);
igl->grid->extent = gridlink->grid->extent;
igl->grid->name = apr_psprintf(ctx->pool,"%s_intermediate_%g",gridlink->grid->name,factor);
igl->grid->nlevels = gridlink->grid->nlevels - 1;
igl->grid->origin = gridlink->grid->origin;
igl->grid->srs = gridlink->grid->srs;
igl->grid->srs_aliases = gridlink->grid->srs_aliases;
igl->grid->unit = gridlink->grid->unit;
igl->grid->tile_sx = gridlink->grid->tile_sx + gridlink->grid->tile_sx * factor;
igl->grid->tile_sy = gridlink->grid->tile_sy + gridlink->grid->tile_sy * factor;
igl->grid->levels = (mapcache_grid_level**)apr_pcalloc(ctx->pool, igl->grid->nlevels*sizeof(mapcache_grid_level*));
for(i=0; i<igl->grid->nlevels; i++) {
mapcache_grid_level *level = (mapcache_grid_level*)apr_pcalloc(ctx->pool,sizeof(mapcache_grid_level));
level->resolution = gridlink->grid->levels[i]->resolution + (gridlink->grid->levels[i+1]->resolution - gridlink->grid->levels[i]->resolution) * factor;
unitheight = igl->grid->tile_sy * level->resolution;
unitwidth = igl->grid->tile_sx * level->resolution;
level->maxy = ceil((igl->grid->extent.maxy-igl->grid->extent.miny - 0.01* unitheight)/unitheight);
level->maxx = ceil((igl->grid->extent.maxx-igl->grid->extent.minx - 0.01* unitwidth)/unitwidth);
igl->grid->levels[i] = level;
}
igl->grid_limits = (mapcache_extent_i*)apr_pcalloc(ctx->pool,igl->grid->nlevels*sizeof(mapcache_extent_i));
mapcache_grid_compute_limits(igl->grid,extent,igl->grid_limits,tolerance);
}
void parseTileset(mapcache_context *ctx, ezxml_t node, mapcache_cfg *config) {
char *name = NULL;
mapcache_tileset *tileset = NULL;
ezxml_t cur_node;
char* value;
int havewgs84bbox=0;
if(config->mode == MAPCACHE_MODE_NORMAL) {
name = (char*)ezxml_attr(node,"name");
} else {
name = "mirror";
}
if(!name || !strlen(name)) {
ctx->set_error(ctx, 400, "mandatory attribute \"name\" not found in <tileset>");
return;
}
else {
name = apr_pstrdup(ctx->pool, name);
/* check we don't already have a cache defined with this name */
if(mapcache_configuration_get_tileset(config, name)) {
ctx->set_error(ctx, 400, "duplicate tileset with name \"%s\"",name);
return;
}
}
tileset = mapcache_tileset_create(ctx);
tileset->name = name;
if ((cur_node = ezxml_child(node,"metadata")) != NULL) {
parseMetadata(ctx, cur_node, tileset->metadata);
GC_CHECK_ERROR(ctx);
}
if ((value = (char*)apr_table_get(tileset->metadata,"wgs84boundingbox")) != NULL) {
double *values;
int nvalues;
value = apr_pstrdup(ctx->pool,value);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, value, NULL, &values, &nvalues) ||
nvalues != 4) {
ctx->set_error(ctx, 400, "failed to parse extent array %s."
"(expecting 4 space separated numbers, got %d (%f %f %f %f)"
"eg <wgs84bbox>-180 -90 180 90</wgs84bbox>",
value,nvalues,values[0],values[1],values[2],values[3]);
return;
}
tileset->wgs84bbox[0] = values[0];
tileset->wgs84bbox[1] = values[1];
tileset->wgs84bbox[2] = values[2];
tileset->wgs84bbox[3] = values[3];
havewgs84bbox = 1;
}
for(cur_node = ezxml_child(node,"grid"); cur_node; cur_node = cur_node->next) {
int i;
mapcache_grid *grid;
mapcache_grid_link *gridlink;
char *restrictedExtent = NULL, *sTolerance = NULL;
double *extent;
int tolerance;
if (tileset->grid_links == NULL) {
tileset->grid_links = apr_array_make(ctx->pool,1,sizeof(mapcache_grid_link*));
}
grid = mapcache_configuration_get_grid(config, cur_node->txt);
if(!grid) {
ctx->set_error(ctx, 400, "tileset \"%s\" references grid \"%s\","
" but it is not configured", name, cur_node->txt);
return;
}
gridlink = apr_pcalloc(ctx->pool,sizeof(mapcache_grid_link));
gridlink->grid = grid;
gridlink->minz = 0;
gridlink->maxz = grid->nlevels;
gridlink->grid_limits = apr_pcalloc(ctx->pool,grid->nlevels*sizeof(int*));
for(i=0;i<grid->nlevels;i++) {
gridlink->grid_limits[i] = apr_pcalloc(ctx->pool,4*sizeof(int));
}
restrictedExtent = (char*)ezxml_attr(cur_node,"restricted_extent");
if(restrictedExtent) {
int nvalues;
restrictedExtent = apr_pstrdup(ctx->pool,restrictedExtent);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, restrictedExtent, NULL, &gridlink->restricted_extent, &nvalues) ||
nvalues != 4) {
ctx->set_error(ctx, 400, "failed to parse extent array %s."
"(expecting 4 space separated numbers, "
"eg <grid restricted_extent=\"-180 -90 180 90\">foo</grid>",
restrictedExtent);
return;
}
extent = gridlink->restricted_extent;
} else {
extent = grid->extent;
}
tolerance = 5;
sTolerance = (char*)ezxml_attr(cur_node,"tolerance");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid tolerance %s (expecting a positive integer)",
sTolerance);
return;
}
}
mapcache_grid_compute_limits(grid,extent,gridlink->grid_limits,tolerance);
sTolerance = (char*)ezxml_attr(cur_node,"minzoom");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid minzoom %s (expecting a positive integer)",
sTolerance);
return;
}
gridlink->minz = tolerance;
}
sTolerance = (char*)ezxml_attr(cur_node,"maxzoom");
if(sTolerance) {
char *endptr;
tolerance = (int)strtol(sTolerance,&endptr,10);
if(*endptr != 0 || tolerance < 0) {
ctx->set_error(ctx, 400, "failed to parse grid maxzoom %s (expecting a positive integer)",
sTolerance);
return;
}
gridlink->maxz = tolerance + 1;
}
if(gridlink->minz<0 || gridlink->maxz>grid->nlevels || gridlink->minz>=gridlink->maxz) {
ctx->set_error(ctx, 400, "invalid grid maxzoom/minzoom %d/%d", gridlink->minz,gridlink->maxz);
return;
}
/* compute wgs84 bbox if it wasn't supplied already */
if(!havewgs84bbox && !strcasecmp(grid->srs,"EPSG:4326")) {
tileset->wgs84bbox[0] = extent[0];
tileset->wgs84bbox[1] = extent[1];
tileset->wgs84bbox[2] = extent[2];
tileset->wgs84bbox[3] = extent[3];
}
APR_ARRAY_PUSH(tileset->grid_links,mapcache_grid_link*) = gridlink;
}
if ((cur_node = ezxml_child(node,"dimensions")) != NULL) {
parseDimensions(ctx, cur_node, tileset);
GC_CHECK_ERROR(ctx);
}
if ((cur_node = ezxml_child(node,"cache")) != NULL) {
mapcache_cache *cache = mapcache_configuration_get_cache(config, cur_node->txt);
if(!cache) {
ctx->set_error(ctx, 400, "tileset \"%s\" references cache \"%s\","
" but it is not configured", name, cur_node->txt);
return;
}
tileset->cache = cache;
}
if ((cur_node = ezxml_child(node,"source")) != NULL) {
mapcache_source *source = mapcache_configuration_get_source(config, cur_node->txt);
if(!source) {
ctx->set_error(ctx, 400, "tileset \"%s\" references source \"%s\","
" but it is not configured", name, cur_node->txt);
return;
}
tileset->source = source;
}
if ((cur_node = ezxml_child(node,"metatile")) != NULL) {
int *values, nvalues;
value = apr_pstrdup(ctx->pool,cur_node->txt);
if(MAPCACHE_SUCCESS != mapcache_util_extract_int_list(ctx, cur_node->txt, NULL,
&values, &nvalues) ||
nvalues != 2) {
ctx->set_error(ctx, 400, "failed to parse metatile dimension %s."
"(expecting 2 space separated integers, "
"eg <metatile>5 5</metatile>",
cur_node->txt);
return;
}
tileset->metasize_x = values[0];
tileset->metasize_y = values[1];
}
if ((cur_node = ezxml_child(node,"watermark")) != NULL) {
if(!*cur_node->txt) {
ctx->set_error(ctx,400, "watermark config entry empty");
return;
}
mapcache_tileset_add_watermark(ctx,tileset,cur_node->txt);
GC_CHECK_ERROR(ctx);
}
if ((cur_node = ezxml_child(node,"expires")) != NULL) {
char *endptr;
tileset->expires = (int)strtol(cur_node->txt,&endptr,10);
if(*endptr != 0) {
ctx->set_error(ctx, 400, "failed to parse expires %s."
"(expecting an integer, "
"eg <expires>3600</expires>",
cur_node->txt);
return;
}
}
if ((cur_node = ezxml_child(node,"auto_expire")) != NULL) {
char *endptr;
tileset->auto_expire = (int)strtol(cur_node->txt,&endptr,10);
if(*endptr != 0) {
ctx->set_error(ctx, 400, "failed to parse auto_expire %s."
"(expecting an integer, "
"eg <auto_expire>3600</auto_expire>",
cur_node->txt);
return;
}
}
if ((cur_node = ezxml_child(node,"metabuffer")) != NULL) {
char *endptr;
tileset->metabuffer = (int)strtol(cur_node->txt,&endptr,10);
if(*endptr != 0) {
ctx->set_error(ctx, 400, "failed to parse metabuffer %s."
"(expecting an integer, "
"eg <metabuffer>1</metabuffer>",
cur_node->txt);
return;
}
}
if ((cur_node = ezxml_child(node,"format")) != NULL) {
mapcache_image_format *format = mapcache_configuration_get_image_format(config,cur_node->txt);
if(!format) {
ctx->set_error(ctx, 400, "tileset \"%s\" references format \"%s\","
" but it is not configured",name,cur_node->txt);
return;
}
tileset->format = format;
}
mapcache_tileset_configuration_check(ctx,tileset);
GC_CHECK_ERROR(ctx);
mapcache_configuration_add_tileset(config,tileset,name);
return;
}
