def processParameters(self, requestname, params):
finalparams = {}
for paramname, paramdef in self.SERVICE_PARAMS[requestname].items():
if paramname not in params.keys() and paramdef.mandatory:
raise OGCException(
'Mandatory parameter "%s" missing from request.' %
paramname)
elif paramname in params.keys():
try:
params[paramname] = paramdef.cast(params[paramname])
except OGCException:
raise
except:
raise OGCException(
'Invalid value "%s" for parameter "%s".' %
(params[paramname], paramname))
if paramdef.allowedvalues and params[
paramname] not in paramdef.allowedvalues:
if not paramdef.fallback:
raise OGCException(
'Parameter "%s" has an illegal value.' % paramname)
else:
finalparams[paramname] = paramdef.default
else:
finalparams[paramname] = params[paramname]
elif not paramdef.mandatory and paramdef.default:
finalparams[paramname] = paramdef.default
return finalparams
def __init__(self, version="1.1.1"):
version = version.split('.')
if len(version) != 3:
raise OGCException('Badly formatted version number.')
try:
version = map(int, version)
except:
raise OGCException('Badly formatted version number.')
self.version = version
def __call__(self, apacheReq):
try:
reqparams = util.FieldStorage(apacheReq, keep_blank_values=1)
if not reqparams:
eh = ExceptionHandler130(self.debug)
response = eh.getresponse(reqparams)
apacheReq.content_type = response.content_type
else:
reqparams = lowerparams(reqparams)
port = apacheReq.connection.local_addr[1]
onlineresource = 'http://%s:%s%s?' % (
apacheReq.hostname, port,
apacheReq.subprocess_env['SCRIPT_NAME'])
if not reqparams.has_key('request'):
raise OGCException('Missing Request parameter.')
request = reqparams['request']
del reqparams['request']
if request == 'GetCapabilities' and not reqparams.has_key(
'service'):
raise OGCException('Missing service parameter.')
if request in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
service = reqparams['service']
if reqparams.has_key('service'):
del reqparams['service']
try:
ogcserver = __import__('ogcserver.' + service)
except:
raise OGCException('Unsupported service "%s".' % service)
ServiceHandlerFactory = getattr(ogcserver,
service).ServiceHandlerFactory
servicehandler = ServiceHandlerFactory(
self.conf, self.mapfactory, onlineresource,
reqparams.get('version', None))
if reqparams.has_key('version'):
del reqparams['version']
if request not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException(
'Operation "%s" not supported.' % request,
'OperationNotSupported')
# Get parameters and pass to WMSFactory in custom "setup" method
ogcparams = servicehandler.processParameters(
request, reqparams)
try:
requesthandler = getattr(servicehandler, request)
except:
raise OGCException(
'Operation "%s" not supported.' % request,
'OperationNotSupported')
response = requesthandler(ogcparams)
apacheReq.content_type = response.content_type
apacheReq.status = apache.HTTP_OK
except Exception, E:
return self.traceback(apacheReq, E)
def ogc_response(request, mapfactory):
conf = SafeConfigParser()
conf.readfp(open(base_path + "/ogcserver.conf"))
reqparams = lowerparams(request.GET)
if 'srs' in reqparams:
reqparams['srs'] = str(reqparams['srs'])
if 'styles' not in reqparams:
reqparams['styles'] = ''
onlineresource = 'http://%s%s?' % (request.META['HTTP_HOST'],
request.META['PATH_INFO'])
if not reqparams.has_key('request'):
raise OGCException('Missing request parameter.')
req = reqparams['request']
del reqparams['request']
if req == 'GetCapabilities' and not reqparams.has_key('service'):
raise OGCException('Missing service parameter.')
if req in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
service = reqparams['service']
if reqparams.has_key('service'):
del reqparams['service']
try:
ogcserver = __import__('ogcserver.' + service)
except:
raise OGCException('Unsupported service "%s".' % service)
ServiceHandlerFactory = getattr(ogcserver, service).ServiceHandlerFactory
servicehandler = ServiceHandlerFactory(conf, mapfactory, onlineresource,
reqparams.get('version', None))
if reqparams.has_key('version'):
del reqparams['version']
if req not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException('Operation "%s" not supported.' % request,
'OperationNotSupported')
ogcparams = servicehandler.processParameters(req, reqparams)
try:
requesthandler = getattr(servicehandler, req)
except:
raise OGCException('Operation "%s" not supported.' % req,
'OperationNotSupported')
# stick the user agent in the request params
# so that we can add ugly hacks for specific buggy clients
ogcparams['HTTP_USER_AGENT'] = request.META['HTTP_USER_AGENT']
wms_resp = requesthandler(ogcparams)
response = HttpResponse()
response['Content-length'] = str(len(wms_resp.content))
response['Content-Type'] = wms_resp.content_type
response.write(wms_resp.content)
return response
def __call__(self, crsstring):
if not re.match('^[A-Z]{3,5}:\d+$', crsstring):
raise OGCException(
'Invalid format for the CRS parameter: %s' % crsstring,
'InvalidCRS')
crsparts = crsstring.split(':')
if crsparts[0] in self.allowednamespaces:
return CRS(crsparts[0], crsparts[1])
else:
raise OGCException('Invalid CRS Namespace: %s' % crsparts[0],
'InvalidCRS')
def GetFeatureInfo(self, params, querymethodname='query_point'):
m = self._buildMap(params)
if params['info_format'] == 'text/plain':
writer = TextFeatureInfo()
elif params['info_format'] == 'text/xml':
writer = XMLFeatureInfo()
if params['query_layers'] and params['query_layers'][0] == '__all__':
for layerindex, layer in enumerate(m.layers):
featureset = getattr(m,
querymethodname)(layerindex, params['i'],
params['j'])
features = featureset.features
if features:
writer.addlayer(layer.name)
for feat in features:
writer.addfeature()
if mapnik_version() >= 800:
for prop, value in feat.attributes.iteritems():
writer.addattribute(prop, value)
else:
for prop in feat.properties:
writer.addattribute(prop[0], prop[1])
else:
for layerindex, layername in enumerate(params['query_layers']):
if layername in params['layers']:
# TODO - pretty sure this is bogus, we can't pull from m.layers by the layerindex of the
# 'query_layers' subset, need to pull from:
# self.mapfactory.layers[layername]
if m.layers[layerindex].queryable:
featureset = getattr(m, querymethodname)(layerindex,
params['i'],
params['j'])
features = featureset.features
if features:
writer.addlayer(m.layers[layerindex].name)
for feat in features:
writer.addfeature()
if mapnik_version() >= 800:
for prop, value in feat.attributes.iteritems(
):
writer.addattribute(prop, value)
else:
for prop in feat.properties:
writer.addattribute(prop[0], prop[1])
else:
raise OGCException(
'Requested query layer "%s" is not marked queryable.'
% layername, 'LayerNotQueryable')
else:
raise OGCException(
'Requested query layer "%s" not in the LAYERS parameter.'
% layername)
return Response(params['info_format'], str(writer))
def process(self, request):
"""Process request."""
reqparams = {}
for key, value in request.GET.items():
reqparams[key.lower()] = str(value)
# create dynamic styles and layers
self.process_trip(request, reqparams)
self.mapfactory.finalize()
# process request
onlineresource = 'http://%s:%s%s?' % (request.META['SERVER_NAME'],
request.META['SERVER_PORT'], request.META['SCRIPT_NAME'])
if not reqparams.has_key('request'):
raise OGCException('Missing request parameter.')
request = reqparams['request']
del reqparams['request']
if request == 'GetCapabilities' and not reqparams.has_key('service'):
raise OGCException('Missing service parameter.')
if request in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
service = reqparams['service']
if reqparams.has_key('service'):
del reqparams['service']
try:
try:
mapnikmodule = __import__('ogcserver.' + service)
except Exception, e:
print "service: %s could not be imported" % service
except:
raise OGCException('Unsupported service "%s".' % service)
servicehandlerfactory = getattr(mapnikmodule, service).ServiceHandlerFactory
servicehandler = servicehandlerfactory(self.conf, self.mapfactory,
onlineresource, reqparams.get('version', None))
if reqparams.has_key('version'):
del reqparams['version']
if request not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException('Operation "%s" not supported.' % request,
'OperationNotSupported')
ogcparams = servicehandler.processParameters(request, reqparams)
try:
requesthandler = getattr(servicehandler, request)
except:
raise OGCException('Operation "%s" not supported.' % request,
'OperationNotSupported')
resp = requesthandler(ogcparams)
data = resp.content
response = HttpResponse(data, content_type=resp.content_type)
return response
def GetMap(self, params):
if params['width'] > int(self.conf.get(
'service', 'maxwidth')) or params['height'] > int(
self.conf.get('service', 'maxheight')):
raise OGCException(
'Requested map size exceeds limits set by this server.')
return WMSBaseServiceHandler.GetMap(self, params)
def ColorFactory(colorstring):
if re.match('^0x[a-fA-F0-9]{6}$', colorstring):
return Color(eval('0x' + colorstring[2:4]),
eval('0x' + colorstring[4:6]),
eval('0x' + colorstring[6:8]))
else:
try:
return Color(colorstring)
except:
raise OGCException(
'Invalid color value. Must be of format "0xFFFFFF", or any format acceptable my mapnik.Color()'
)
def __call__(self, environ, start_response):
reqparams = {}
base = True
for key, value in parse_qs(environ['QUERY_STRING'], True).items():
reqparams[key.lower()] = value[0]
base = False
if self.conf.has_option_with_value('service', 'baseurl'):
onlineresource = '%s' % self.conf.get('service', 'baseurl')
else:
# if there is no baseurl in the config file try to guess a valid one
onlineresource = 'http://%s%s%s?' % (environ['HTTP_HOST'], environ['SCRIPT_NAME'], environ['PATH_INFO'])
try:
if not reqparams.has_key('request'):
raise OGCException('Missing request parameter.')
request = reqparams['request']
del reqparams['request']
if request == 'GetCapabilities' and not reqparams.has_key('service'):
raise OGCException('Missing service parameter.')
if request in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
try:
service = reqparams['service']
except:
service = 'WMS'
request = 'GetCapabilities'
if reqparams.has_key('service'):
del reqparams['service']
try:
ogcserver = do_import('ogcserver')
except:
raise OGCException('Unsupported service "%s".' % service)
ServiceHandlerFactory = getattr(ogcserver, service).ServiceHandlerFactory
servicehandler = ServiceHandlerFactory(self.conf, self.mapfactory, onlineresource, reqparams.get('version', None))
if reqparams.has_key('version'):
del reqparams['version']
if request not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException('Operation "%s" not supported.' % request, 'OperationNotSupported')
ogcparams = servicehandler.processParameters(request, reqparams)
try:
requesthandler = getattr(servicehandler, request)
except:
raise OGCException('Operation "%s" not supported.' % request, 'OperationNotSupported')
# stick the user agent in the request params
# so that we can add ugly hacks for specific buggy clients
ogcparams['HTTP_USER_AGENT'] = environ.get('HTTP_USER_AGENT', '')
response = requesthandler(ogcparams)
except:
version = reqparams.get('version', None)
if not version:
version = Version()
else:
version = Version(version)
if version >= '1.3.0':
eh = ExceptionHandler130(self.debug,base,self.home_html)
else:
eh = ExceptionHandler111(self.debug,base,self.home_html)
response = eh.getresponse(reqparams)
response_headers = [('Content-Type', response.content_type),('Content-Length', str(len(response.content)))]
if self.max_age:
response_headers.append(('Cache-Control', self.max_age))
start_response('200 OK', response_headers)
yield response.content
def _buildMap(self, params):
if str(params['crs']) not in self.allowedepsgcodes:
raise OGCException(
'Unsupported CRS "%s" requested.' % str(params['crs']).upper(),
'InvalidCRS')
if params['bbox'][0] >= params['bbox'][2]:
raise OGCException(
"BBOX values don't make sense. minx is greater than maxx.")
if params['bbox'][1] >= params['bbox'][3]:
raise OGCException(
"BBOX values don't make sense. miny is greater than maxy.")
# relax this for now to allow for a set of specific layers (meta layers even)
# to be used without known their styles or putting the right # of commas...
#if params.has_key('styles') and len(params['styles']) != len(params['layers']):
# raise OGCException('STYLES length does not match LAYERS length.')
m = Map(params['width'], params['height'], '+init=%s' % params['crs'])
if params.has_key('transparent') and params['transparent'] in (
'FALSE', 'False', 'false'):
if params['bgcolor']:
m.background = params['bgcolor']
elif not params.has_key(
'transparent') and self.mapfactory.map_attributes.get(
'bgcolor'):
m.background = self.mapfactory.map_attributes['bgcolor']
else:
m.background = Color(0, 0, 0, 0)
if params.has_key('buffer_size'):
if params['buffer_size']:
m.buffer_size = params['buffer_size']
else:
buffer_ = self.mapfactory.map_attributes.get('buffer_size')
if buffer_:
m.buffer_size = self.mapfactory.map_attributes['buffer_size']
# haiti spec tmp hack! show meta layers without having
# to request huge string to avoid some client truncating it!
if params['layers'] and params['layers'][0] in (
'osm_haiti_overlay', 'osm_haiti_overlay_900913'):
for layer_obj in self.mapfactory.ordered_layers:
layer = copy_layer(layer_obj)
if not hasattr(layer, 'meta_style'):
pass
else:
layer.styles.append(layer.meta_style)
m.append_style(
layer.meta_style,
self.mapfactory.meta_styles[layer.meta_style])
m.layers.append(layer)
# a non WMS spec way of requesting all layers
# uses orderedlayers that preserves original ordering in XML mapfile
elif params['layers'] and params['layers'][0] == '__all__':
for layer_obj in self.mapfactory.ordered_layers:
# if we don't copy the layer here we get
# duplicate layers added to the map because the
# layer is kept around and the styles "pile up"...
layer = copy_layer(layer_obj)
if hasattr(layer, 'meta_style'):
continue
reqstyle = layer.wmsdefaultstyle
if reqstyle in self.mapfactory.aggregatestyles.keys():
for stylename in self.mapfactory.aggregatestyles[reqstyle]:
layer.styles.append(stylename)
else:
layer.styles.append(reqstyle)
for stylename in layer.styles:
if stylename in self.mapfactory.styles.keys():
m.append_style(stylename,
self.mapfactory.styles[stylename])
m.layers.append(layer)
else:
for layerindex, layername in enumerate(params['layers']):
if layername in self.mapfactory.meta_layers:
layer = copy_layer(self.mapfactory.meta_layers[layername])
layer.styles.append(layername)
m.append_style(layername,
self.mapfactory.meta_styles[layername])
else:
try:
# uses unordered dict of layers
# order based on params['layers'] request which
# should be originally informed by order of GetCaps response
layer = copy_layer(self.mapfactory.layers[layername])
except KeyError:
raise OGCException(
'Layer "%s" not defined.' % layername,
'LayerNotDefined')
try:
reqstyle = params['styles'][layerindex]
except IndexError:
reqstyle = ''
if reqstyle and reqstyle not in layer.wmsextrastyles:
raise OGCException(
'Invalid style "%s" requested for layer "%s".' %
(reqstyle, layername), 'StyleNotDefined')
if not reqstyle:
reqstyle = layer.wmsdefaultstyle
if reqstyle in self.mapfactory.aggregatestyles.keys():
for stylename in self.mapfactory.aggregatestyles[
reqstyle]:
layer.styles.append(stylename)
else:
layer.styles.append(reqstyle)
for stylename in layer.styles:
if stylename in self.mapfactory.styles.keys():
m.append_style(stylename,
self.mapfactory.styles[stylename])
else:
raise ServerConfigurationError(
'Layer "%s" refers to non-existent style "%s".'
% (layername, stylename))
m.layers.append(layer)
m.zoom_to_box(
Envelope(params['bbox'][0], params['bbox'][1], params['bbox'][2],
params['bbox'][3]))
return m
def process(self, req):
base = False
if not req.params:
base = True
reqparams = lowerparams(req.params)
if self.conf.has_option_with_value('service', 'baseurl'):
onlineresource = '%s' % self.conf.get('service', 'baseurl')
else:
# if there is no baseurl in the config file try to guess a valid one
onlineresource = 'http://%s%s?' % (req.environ['HTTP_HOST'],
req.environ['SCRIPT_NAME'])
try:
if not reqparams.has_key('request'):
raise OGCException('Missing request parameter.')
request = reqparams['request']
del reqparams['request']
if request == 'GetCapabilities' and not reqparams.has_key(
'service'):
raise OGCException('Missing service parameter.')
if request in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
service = reqparams['service']
if reqparams.has_key('service'):
del reqparams['service']
try:
ogcserver = __import__('ogcserver.' + service)
except:
raise OGCException('Unsupported service "%s".' % service)
ServiceHandlerFactory = getattr(ogcserver,
service).ServiceHandlerFactory
servicehandler = ServiceHandlerFactory(
self.conf, self.mapfactory, onlineresource,
reqparams.get('version', None))
if reqparams.has_key('version'):
del reqparams['version']
if request not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException('Operation "%s" not supported.' % request,
'OperationNotSupported')
ogcparams = servicehandler.processParameters(request, reqparams)
try:
requesthandler = getattr(servicehandler, request)
except:
raise OGCException('Operation "%s" not supported.' % request,
'OperationNotSupported')
# stick the user agent in the request params
# so that we can add ugly hacks for specific buggy clients
ogcparams['HTTP_USER_AGENT'] = req.environ['HTTP_USER_AGENT']
response = requesthandler(ogcparams)
except:
version = reqparams.get('version', None)
if not version:
version = Version()
else:
version = Version(version)
if version >= '1.3.0':
eh = ExceptionHandler130(self.debug, base, self.home_html)
else:
eh = ExceptionHandler111(self.debug, base, self.home_html)
response = eh.getresponse(reqparams)
req.set_header('Content-Type', response.content_type)
req.set_header('Content-Length', str(len(response.content)))
req.write(response.content)
def _buildMap(self, params):
"""This variant of buildmap just serves up the map as defined in the
xml file, plus some customizations from the params. Style and SRS are
ignored."""
if str(params['crs']) not in self.allowedepsgcodes:
raise OGCException(
'Unsupported CRS "%s" requested.' % str(params['crs']).upper(),
'InvalidCRS')
if params['bbox'][0] >= params['bbox'][2]:
raise OGCException(
"BBOX values don't make sense. minx is greater than maxx.")
if params['bbox'][1] >= params['bbox'][3]:
raise OGCException(
"BBOX values don't make sense. miny is greater than maxy.")
# There should be only one layer requested.
if len(params['layers']) <> 1:
raise OGCException(
"When specifying a pre-rendered map, only one layer is allowed."
)
# retrieve the map object and set width and height.
# leave srs alone.
m = self.mapfactory.layers[params['layers'][0]]
m.width = params['width']
m.height = params['height']
transparent = params.get('transparent', '').lower() == 'true'
# disable transparent on incompatible formats
if transparent and params.get('format', '') == 'image/jpeg':
transparent = False
if transparent:
# transparent has highest priority
pass
elif params.has_key('bgcolor'):
# if not transparent use bgcolor in url
m.background = params['bgcolor']
else:
# if not bgcolor in url use map background
if mapnik_version() >= 200000:
bgcolor = self.mapfactory.map_attributes.get('bgcolor', None)
else:
bgcolor = self.mapfactory.map_attributes.get(
'background-color', None)
if bgcolor:
m.background = bgcolor
else:
# if not map background defined use white color
m.background = Color(255, 255, 255, 255)
if params.has_key('buffer_size'):
if params['buffer_size']:
m.buffer_size = params['buffer_size']
else:
buffer_ = self.mapfactory.map_attributes.get('buffer_size')
if buffer_:
m.buffer_size = self.mapfactory.map_attributes['buffer_size']
m.zoom_to_box(
Box2d(params['bbox'][0], params['bbox'][1], params['bbox'][2],
params['bbox'][3]))
return m
def request_mapnik(self, env, mapdata, que=None):
"""
render on mapnik request
"""
if self.mapnik_ver >= 300000:
map_obj = mapdata
else:
map_obj = self.ogcserver_constructor(mapdata)
reqparams = {}
base = True
for key, value in parse_qs(env['QUERY_STRING'], True).items():
reqparams[key.lower()] = value[0]
base = False
if self.ogcconf.has_option_with_value('service', 'baseurl'):
onlineresource = '%s' % self.ogcconf.get('service', 'baseurl')
else:
onlineresource = 'http://%s%s%s?' % (
env['HTTP_HOST'],
env['SCRIPT_NAME'],
env['PATH_INFO']
)
try:
if not reqparams.has_key('request'):
raise OGCException('Missing request parameter.')
request = reqparams['request']
del reqparams['request']
if request == 'GetCapabilities' and not reqparams.has_key('service'):
raise OGCException('Missing service parameter.')
if request in ['GetMap', 'GetFeatureInfo']:
service = 'WMS'
else:
try:
service = reqparams['service']
except:
service = 'WMS'
request = 'GetCapabilities'
if reqparams.has_key('service'):
del reqparams['service']
ServiceHandlerFactory = getattr(self.ogcserver, service).ServiceHandlerFactory
servicehandler = ServiceHandlerFactory(
self.ogcconf,
map_obj,
onlineresource,
reqparams.get('version', None)
)
if reqparams.has_key('version'):
del reqparams['version']
if request not in servicehandler.SERVICE_PARAMS.keys():
raise OGCException(
'Operation "%s" not supported.' % request,
'OperationNotSupported'
)
ogcparams = servicehandler.processParameters(request, reqparams)
try:
requesthandler = getattr(servicehandler, request)
except:
raise OGCException(
'Operation "%s" not supported.' % request,
'OperationNotSupported'
)
ogcparams['HTTP_USER_AGENT'] = env.get('HTTP_USER_AGENT', '')
response = requesthandler(ogcparams)
except:
version = reqparams.get('version', None)
if not version:
version = Version()
else:
version = Version(version)
if version >= '1.3.0':
eh = ExceptionHandler130(self.debug,base,self.home_html)
else:
eh = ExceptionHandler111(self.debug,base,self.home_html)
response = eh.getresponse(reqparams)
out_response = (response.content_type, response.content)
if que is None:
return out_response
else:
que.put(out_response)