def process_request(self, request):
device_families = importlib.import_module(getattr(settings, 'DEVICE_FAMILIES', 'templateswitcher.device_families'))
device_obj = getattr(request, 'device', None)
# Use hash as the key since UA's can be quite llong, dont want to hit memcache 250 byte limit
device_cache_key = hash(request.META['HTTP_USER_AGENT'])
template_set = cache.get(device_cache_key)
full_path = request.get_full_path()
media_request = (full_path.startswith(settings.MEDIA_URL) or
full_path.startswith(settings.ADMIN_MEDIA_PREFIX) or full_path.startswith('/favicon'))
if not template_set:
# set the device switcher library according to the settings - defaults to wurfl
device_switch_libs = getattr(settings, 'DEVICE_SWITCH_LIB', ['WurlfSniffer'])
da_api = getattr(settings, 'DEVICE_ATLAS_API_FILE', None)
device_cache_timeout = getattr(settings, 'DEVICE_CACHE_TIMEOUT', 72000)
# import requied device library classes
if 'ApexVertexSniffer' in device_switch_libs:
from mobile.sniffer.apexvertex.sniffer import ApexVertexSniffer
if 'WAPProfileSniffer' in device_switch_libs:
from mobile.sniffer.wapprofile.sniffer import WAPProfileSniffer
if 'DeviceAtlasSniffer' in device_switch_libs:
if not os.path.exists(da_api):
raise Exception('DEVICE_ATLAS_API_FILE must be in your setting and contain a valid path to use Device Atlas.')
from mobile.sniffer.deviceatlas.sniffer import DeviceAtlasSniffer
if 'WurlfSniffer' in device_switch_libs:
from mobile.sniffer.wurlf.sniffer import WurlfSniffer
chained_libs = []
for device_lib in device_switch_libs:
chained_libs.append(eval(device_lib)())
# instantiate the sniffer and device object
sniffer = ChainedSniffer(chained_libs)
device_object = sniffer.sniff(request)
template_set = device_families.get_device_family(device_object)
# copy the device object to the request object
request.device = device_object
cache.set(device_cache_key, template_set, device_cache_timeout)
if not media_request:
# switch the template dir for the given device
settings.TEMPLATE_DIRS = (
settings.DEVICE_TEMPLATE_DIRS[template_set],
)
def run():
# Do imports here, because Django init order causes otherwise circular imports
from mobile.sniffer.apexvertex.sniffer import ApexVertexSniffer
from mobile.sniffer.wapprofile.sniffer import WAPProfileSniffer
from mobile.sniffer.deviceatlas.sniffer import DeviceAtlasSniffer
# Create all supported sniffers
da = DeviceAtlasSniffer(da_api_file)
apex = ApexVertexSniffer()
wap = WAPProfileSniffer()
# Preferred order of sniffers
sniffer = ChainedSniffer([apex, wap, da])
n95 = "Mozilla/5.0 (SymbianOS/9.2; U; Series60/3.1 NokiaN95/11.0.026; Profile MIDP-2.0 Configuration/CLDC-1.1) AppleWebKit/413 (KHTML, like Gecko) Safari/413"
req = create_test_request(n95)
multi_backend_ua = sniffer.sniff(req)
provider, val = multi_backend_ua.get_with_provider("stream.3gp.h263")
assert provider == apex
assert multi_backend_ua.get("mp4.h264.level11") == True
# This should come from deviceatlas - BlackBerry does not announce WAP profiles
blackberry = "BlackBerry7100i/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/103"
req = create_test_request(blackberry)
multi_backend_ua = sniffer.sniff(req)
provider, val = multi_backend_ua.get_with_provider("usableDisplayWidth")
assert provider == da
print "Got:" +str(provider) + " " + str(val)
# Then test something which is not user agent based -
# this very old Sony
sony = "http://wap.sonyericsson.com/UAprof/T68R502.xml"
req = create_test_request(profile_url = sony)
multi_backend_ua = sniffer.sniff(req)
provider, val = multi_backend_ua.get_with_provider("usableDisplayWidth")
assert provider == wap, "Got backend: " + str(provider)
assert val == 101, "Got " + str(val)