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EnmodalMap.py
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EnmodalMap.py
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from flask import Flask, Blueprint, request, url_for, send_from_directory
from werkzeug.utils import secure_filename
import sys
import os
import string
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__))))
from EnmodalSessions import *
from lzstring import LZString
import json
import psycopg2
import psycopg2.extras
import configparser
config = configparser.RawConfigParser()
config.read(os.path.abspath(os.path.join(os.path.dirname(__file__), 'settings.cfg')))
SESSIONS_HOST = config.get('sessions', 'host')
SESSIONS_PORT = config.get('sessions', 'port')
SESSIONS_DBNAME = config.get('sessions', 'dbname')
SESSIONS_USER = config.get('sessions', 'user')
SESSIONS_PASSWORD = config.get('sessions', 'password')
SESSIONS_CONN_STRING = "host='"+SESSIONS_HOST+"' port='"+SESSIONS_PORT+"' dbname='"+SESSIONS_DBNAME+"' user='"+SESSIONS_USER+"' password='"+SESSIONS_PASSWORD+"'"
SESSIONS_SECRET_KEY_PUBLIC = int(config.get('sessions', 'secret_key_public'), 16)
SESSIONS_SECRET_KEY_PRIVATE = int(config.get('sessions', 'secret_key_private'), 16)
SESSION_EXPIRATION_TIME = int(config.get('sessions', 'expiration_time'))
UPLOAD_FOLDER = config.get('flask', 'upload_folder')
enmodal_map = Blueprint('enmodal_map', __name__)
def allowed_file(filename):
return '.' in filename and filename.rsplit('.', 1)[1].lower() in ['json']
@enmodal_map.route('/uploads/<filename>')
def uploaded_file(filename):
return send_from_directory(UPLOAD_FOLDER, filename)
def save_session(s, user_id, take_snapshot):
sid = s.sid
print("saving with sid "+str(sid))
sdata = str(s.map.to_json())
sdt = datetime.datetime.now()
conn = psycopg2.connect(SESSIONS_CONN_STRING)
cursor = conn.cursor()
cursor.execute("SELECT id FROM sessions WHERE id = '%s' LIMIT 1", [sid])
if (cursor.rowcount > 0):
cursor.execute("UPDATE sessions SET data = %s, updated = %s WHERE id = %s", (sdata, sdt, sid))
else:
cursor.execute("INSERT INTO sessions (id, data, updated) VALUES (%s, %s, %s)", (sid, sdata, sdt))
if user_id != None:
cursor.execute("UPDATE sessions SET owner_id = %s WHERE id = %s", (user_id, sid))
conn.commit()
@enmodal_map.route('/session_save')
def route_session_save():
h = int(request.args.get('i'), 16)
e = check_for_session_errors(h)
if e:
return e
a = session_manager.auth_by_key(h)
if a.editable:
save_session(a.session, 0, True)
del a
return json.dumps({"result": "OK"})
else:
del a
return json.dumps({"result": "FAIL", "message": "Non-editable session"})
@enmodal_map.route('/session_load')
def route_session_load():
h = int(request.args.get('i'), 16)
conn = psycopg2.connect(SESSIONS_CONN_STRING)
cursor = conn.cursor()
is_private = False
sid = session_manager.get_sid_from_public_key(h)
#print "public guess: "+str(sid)
cursor.execute("SELECT data, title FROM sessions WHERE id = '%s' LIMIT 1", [sid])
if (cursor.rowcount == 0):
sid = session_manager.get_sid_from_private_key(h)
#print "private guess: "+str(sid)
cursor.execute("SELECT data, title FROM sessions WHERE id = '%s' LIMIT 1", [sid])
is_private = True
if (cursor.rowcount == 0):
return json.dumps({"error": "Invalid ID"})
print(sid)
row = cursor.fetchone()
sdata = row[0]
title = row[1]
m = Transit.Map(0)
m.from_json(sdata)
m.sidf_state = 0
m.regenerate_all_ids()
if not is_private:
s = EnmodalSession()
session_manager.add(s)
s.map = m
else:
s = session_manager.get_by_sid(sid)
if s is None:
s = EnmodalSession()
s.sid = sid
s.map = m
session_manager.add(s)
else:
s.map = m
a = session_manager.auth_by_key(s.private_key())
return_obj = {"public_key": '{:16x}'.format(a.session.public_key()), "is_private": a.editable, "title": title, "data": m.to_json()}
if a.editable:
return_obj["private_key"] = '{:16x}'.format(a.session.private_key())
del a
return json.dumps(return_obj)
@enmodal_map.route('/session_push', methods=['GET', 'POST'])
def route_session_push():
h = int(request.args.get('i'), 16)
e = check_for_session_errors(h)
if e:
return e
print('received session push')
data = request.get_data(as_text=True)
jd = LZString().decompressFromBase64(data)
print('decompressed session push')
jdl = json.loads(jd)
d = jdl['map']
#print d
d['sidf_state'] = 0
m = Transit.Map(0)
m.from_json(d)
m.sidf_state = 0
# Copy old map
om = session_manager.auth_by_key(h).session.map
# Save new map
session_manager.auth_by_key(h).session.map = m
# Save gids
for service in om.services:
for station in service.stations:
if station.hexagons_known:
for service_n in m.services:
for station_n in service_n.stations:
if station.location == station_n.location:
station_n.set_hexagons(station.hexagons)
# Copy user settings
# TODO clean this up!
settings = jdl['settings']
m.settings.from_json(settings)
return json.dumps({"result": "OK"})
@enmodal_map.route('/session_import_json', methods=['POST'])
def route_session_import_json():
h = int(request.args.get('i'), 16)
e = check_for_session_errors(h)
if e:
return e
print(request.files)
# check if the post request has the file part
if 'json' not in request.files:
return json.dumps({"result": "error", "message": "No file."})
file = request.files['json']
# if user does not select file, browser also
# submit a empty part without filename
if file.filename == '':
return json.dumps({"result": "error", "message": "No file."})
if file and allowed_file(file.filename):
filename = secure_filename(request.args.get('i') + ".json")
if not os.path.isdir(UPLOAD_FOLDER):
os.mkdir(UPLOAD_FOLDER)
file.save(os.path.join(UPLOAD_FOLDER, filename))
print(os.path.join(UPLOAD_FOLDER, filename))
with open(os.path.join(UPLOAD_FOLDER, filename), "r") as f:
r = f.read()
print(r)
printable = set(string.printable)
r = filter(lambda x: x in printable, r)
jdl = json.loads(r)
d = jdl['map']
d['sidf_state'] = 0
m = Transit.Map(0)
m.from_json(d)
m.sidf_state = 0
# Copy old map
om = session_manager.auth_by_key(h).session.map
# Save new map
session_manager.auth_by_key(h).session.map = m
# Save gids
for service in om.services:
for station in service.stations:
if station.hexagons_known:
for service_n in m.services:
for station_n in service_n.stations:
if station.location == station_n.location:
station_n.set_hexagons(station.hexagons)
# Copy user settings
# TODO clean this up!
settings = jdl['settings']
m.settings.from_json(settings)
return json.dumps({"result": "OK", "data": m.to_json()})
else:
return json.dumps({"result": "error", "message": "Bad file."})