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# coding=utf-8
import base64, copy, json, os, random, sys, warnings
from StringIO import StringIO
from mod_python import apache, Session
OLDPATH = copy.copy(sys.path)
sys.path.append(
os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
sys.path.append(
os.path.abspath(os.path.join(os.path.dirname(__file__), '../../pybcdd')))
from dealconvert import DealConverter
sys.path = OLDPATH
CACHEPATH = os.path.abspath(
os.path.join(
os.path.dirname(__file__),
'../../cache'))
def _get_rand_string(length=30):
return ('%0' + str(length) + 'x') % (random.randrange(16**length))
def _get_file_id():
while True:
output_id = _get_rand_string()
output_path = os.path.join(CACHEPATH, output_id)
if not os.path.exists(output_path):
return output_id, output_path
def _print_response(response, obj):
response.write(json.dumps(obj))
def handle_upload(response, request):
if request.method != 'POST':
response.status = apache.HTTP_METHOD_NOT_ALLOWED
return
try:
params = json.load(request)
except ValueError as e:
response.write(str(e))
response.status = apache.HTTP_BAD_REQUEST
return
session = Session.Session(response)
if 'tokens' not in session:
session['tokens'] = {}
response.content_type = 'application/json'
return_obj = {
'name': None,
'warnings': [],
'error': None,
'files': []
}
warnings.simplefilter('always')
warnings.showwarning = lambda msg, *args: return_obj['warnings'].append(
unicode(msg))
try:
return_obj['name'] = params['name']
converter = DealConverter()
parser = converter.detect_format(params['name'])
input_file = StringIO(base64.b64decode(params['content']))
dealset = parser.parse_content(input_file)
input_file.close()
if not len(dealset):
raise RuntimeError('Dealset is empty')
if params['display_deals']:
preview_obj = []
for board in dealset:
deal_preview = {
'number': board.number,
'conditions': 'nesw'[board.dealer],
'hands': []
}
for pair in ['ns', 'ew']:
if board.vulnerable[pair.upper()]:
deal_preview['conditions'] += '-' + pair
deal_preview['hands'] = board.hands
preview_obj.append(deal_preview)
return_obj['preview'] = preview_obj
else:
return_obj['preview'] = None
except RuntimeError as e:
return_obj['error'] = unicode(e)
return _print_response(response, return_obj)
for output_type in params['output']:
output_return = {
'name': None,
'link': None,
'warnings': [],
'error': None
}
warnings.showwarning = lambda msg, *args: output_return['warnings'].append(
unicode(msg))
try:
output_name = '.'.join(params['name'].split('.')[:-1] + [output_type])
output_return['name'] = output_name
output = converter.detect_format(output_name, False)
output_id, output_path = _get_file_id()
token = _get_rand_string(16)
output_buffer = StringIO()
output.output_content(output_buffer, dealset)
with file(output_path, 'w') as output_file:
json.dump({
'token': token,
'name': output_name,
'content': base64.b64encode(output_buffer.getvalue())
}, output_file)
output_buffer.close()
session['tokens'][output_id] = token
output_return['link'] = 'download/%s' % (output_id)
except RuntimeError as e:
output_return['error'] = unicode(e)
return_obj['files'].append(output_return)
session.save()
_print_response(response, return_obj)
def handle_download(response, request, uri_parts=[]):
if not len(uri_parts):
response.status = apache.HTTP_BAD_REQUEST
return
if request.method != 'GET':
response.status = apache.HTTP_METHOD_NOT_ALLOWED
return
session = Session.Session(response)
if 'tokens' not in session:
response.status = apache.HTTP_NOT_FOUND
return
output_id = uri_parts[0]
output_path = os.path.join(CACHEPATH, output_id)
if not os.path.exists(output_path):
response.status = apache.HTTP_NOT_FOUND
return
if output_id not in session['tokens']:
response.status = apache.HTTP_NOT_FOUND
return
with file(output_path) as output_file:
output = json.load(output_file)
if output['token'] != session['tokens'][output_id]:
response.status = apache.HTTP_NOT_FOUND
return
content = base64.b64decode(output['content'])
response.content_type = 'application/octet-stream'
response.headers_out.add(
'Content-Disposition', 'attachment; filename=%s' % (output['name']))
response.write(content)
def handler(req):
# MIME type fix for error messages
req.content_type = 'text/plain'
# we need to recover original request path, from before rewrite
orig_req = req
while True:
if orig_req.prev:
orig_req = orig_req.prev
else:
break
uri_parts = [part for part in orig_req.uri.split('/') if part.strip()]
uri_parts = uri_parts[uri_parts.index('api')+1:]
if not len(uri_parts):
req.status = apache.HTTP_BAD_REQUEST
else:
try:
if uri_parts[0] == 'upload':
handle_upload(req, orig_req)
elif uri_parts[0] == 'download':
handle_download(req, orig_req, uri_parts[1:])
else:
req.status = apache.HTTP_BAD_REQUEST
except Exception as e:
req.status = apache.HTTP_INTERNAL_SERVER_ERROR
req.write(str(e))
return apache.OK
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