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main.py
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from http.server import BaseHTTPRequestHandler, HTTPServer
import requests
from requests.packages import urllib3
from urllib.parse import parse_qs
import os
import json
import pywasm
import datetime
import pytz
tz_NP = pytz.timezone('Asia/Kathmandu')
payld_id=0
payld_d=0
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
class TokenParser():
def __init__(self):
self.runtime = pywasm.load('css.wasm')
def parse_token_response(self, token_response):
n = self.runtime.exec('cdx', [token_response['salt1'], token_response['salt2'], token_response['salt3'], token_response['salt4'], token_response['salt5']]);
l = self.runtime.exec('rdx', [token_response['salt1'], token_response['salt2'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
o = self.runtime.exec('bdx', [token_response['salt1'], token_response['salt2'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
p = self.runtime.exec('ndx', [token_response['salt1'], token_response['salt2'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
q = self.runtime.exec('mdx', [token_response['salt1'], token_response['salt2'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
a = self.runtime.exec('cdx', [token_response['salt2'], token_response['salt1'], token_response['salt3'], token_response['salt5'], token_response['salt4']]);
b = self.runtime.exec('rdx', [token_response['salt2'], token_response['salt1'], token_response['salt3'], token_response['salt4'], token_response['salt5']]);
c = self.runtime.exec('bdx', [token_response['salt2'], token_response['salt1'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
d = self.runtime.exec('ndx', [token_response['salt2'], token_response['salt1'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
e = self.runtime.exec('mdx', [token_response['salt2'], token_response['salt1'], token_response['salt4'], token_response['salt3'], token_response['salt5']]);
access_token = token_response['accessToken']
refresh_token = token_response['refreshToken']
parsed_access_token = access_token[0:n] + access_token[n + 1: l] + access_token[l + 1: o] + access_token[o + 1: p] + access_token[p + 1:q] + access_token[q + 1:]
parsed_refresh_token = refresh_token[0:a] + refresh_token[a + 1: b] + refresh_token[b + 1: c] + refresh_token[c + 1: d] + refresh_token[d + 1: e ] + refresh_token[e + 1: ]
return (parsed_access_token, parsed_refresh_token)
class Nepse:
def __init__(self):
self.token_parser = TokenParser()
self.base_url = "https://www.nepalstock.com.np"
self.token_url = f"{self.base_url}/api/authenticate/prove"
self.refresh_url = f"{self.base_url}/api/authenticate/refresh-token"
self.post_payload_id = None
self.api_end_point_access_token = (False, False)
self.headers= {
'Host': self.base_url.replace('https://', ''),
'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0',
'Accept': 'application/json, text/plain, */*',
'Accept-Language': 'en-US,en;q=0.5',
'Accept-Encoding': 'gzip, deflate, br',
'Connection': 'keep-alive',
'Referer': f'{self.base_url}',
'Pragma': 'no-cache',
'Cache-Control': 'no-cache',
'TE': 'Trailers',
}
###############################################PRIVATE METHODS###############################################
def requestAPI(self, url,no=None):
headers = self.headers
if not no: # this is done so that get request to api/authenticate doesnt fail, since it doesnt require authorization headers
access_token, request_token = self.getToken()
headers = {'Authorization': f'Salter {access_token}', **self.headers}
response = requests.get(url, headers=headers, verify=False)
# if (response.status_code != 200):
# self.refreshToken()
# return self.requestAPI(url)
return (response.text,response.status_code)
def requestPOSTAPI(self, url,post_data=None):
access_token, request_token = self.getToken()
headers = {'Content-Type':'application/json', 'Authorization': f'Salter {access_token}', **self.headers, }
if post_data:
response = requests.post(url, headers=headers, data=json.dumps(post_data), verify=False)
else:
#response = requests.post(url, headers=headers, data=json.dumps({"id": self.getPOSTPayloadIDForNepseIndex() if '/graph/index/' in url else self.getPOSTPayloadID()}))
response = requests.post(url, headers=headers, data=json.dumps({"id": self.getPOSTPayloadIDForNepseIndex() if '/graph/index/' in url else (self.getPOSTPayloadIDForFloorSheet() if '/nepse-data/floorsheet' or ' /nepse-data/today-price' in url else self.getPOSTPayloadID())}), verify=False)
# if (response.status_code != 200):
# self.refreshToken()
# return self.requestPOSTAPI(url)
return (response.text,response.status_code)
#token is not unique for each url, when token is requested,
def getToken(self):
if self.api_end_point_access_token == (False, False):
token_response = self.getValidToken()
self.api_end_point_access_token = token_response
return self.api_end_point_access_token
def refreshToken(self):
access_token, refresh_token = self.api_end_point_access_token
if (access_token != False):# this is done to make first request to api/authenticate pass
data=json.dumps({'refreshToken':refresh_token})
headers= {**self.headers,
"Content-Type": "application/json",
"Content-Length": str(len(data)),
"Authorization": f"Salter {access_token}"
}
refresh_key = requests.post(self.refresh_url,
headers=headers,
data=data, verify=False)
if refresh_key.status_code != 200:
self.resetToken()
else:
self.api_end_point_access_token = self.getValidTokenFromJSON( refresh_key.json() )
else:
self.getToken()
def resetToken(self):
self.api_end_point_access_token = (False, False)
# self.api_end_point_access_token[url] = False
def getValidTokenFromJSON(self, token_response):
self.salts = []
for salt_index in range(1, 6):
val = int(token_response[f'salt{salt_index}'])
token_response[f'salt{salt_index}'] = val
self.salts.append(val)
#returns access_token only, refresh token is not used right now
return self.token_parser.parse_token_response(token_response)
def getValidToken(self):
token_response = json.loads(self.requestAPI(url=self.token_url,no='no')[0])
return self.getValidTokenFromJSON(token_response)
##################method to get post payload id#################################33
def getDummyID(self):
global payld_d, payld_id
now = datetime.datetime.now(tz_NP)
if payld_d== now.day:
return payld_id
payld_d = now.day
payld_id=json.loads(self.requestAPI(url='https://www.nepalstock.com.np/api/nots/nepse-data/market-open')[0])['id']
return payld_id
def getDummyData(self):
return [ 147, 117, 239, 143, 157, 312, 161, 612, 512, 804,
411, 527, 170, 511, 421, 667, 764, 621, 301, 106, 133, 793,
411, 511, 312, 423, 344, 346, 653, 758, 342, 222, 236, 811,
711, 611, 122, 447, 128, 199, 183, 135, 489, 703, 800, 745,
152, 863, 134, 211, 142, 564, 375, 793, 212, 153, 138, 153,
648, 611, 151, 649, 318, 143, 117, 756, 119, 141, 717, 113,
112, 146, 162, 660, 693, 261, 362, 354, 251, 641, 157, 178,
631, 192, 734, 445, 192, 883, 187, 122, 591, 731, 852, 384,
565, 596, 451, 772, 624, 691 ]
def getPOSTPayloadIDForNepseIndex(self):
dummy_id = self.getDummyID()
now = datetime.datetime.now(tz_NP)
e = self.getDummyData()[dummy_id] + dummy_id + 2*(now.day)
n = e + self.salts[ 3 if e % 10 < 5 else 1] * now.day - self.salts[ (3 if e%10 < 5 else 1) - 1];
self.post_payload_id = n
return self.post_payload_id
def getPOSTPayloadIDForFloorSheet(self):
dummy_id = self.getDummyID()
now = datetime.datetime.now(tz_NP)
e = self.getDummyData()[dummy_id] + dummy_id + 2*(now.day)
n = e + self.salts[1 if e%10 < 4 else 3] * now.day - self.salts[(1 if e%10<4 else 3) - 1]
self.post_payload_id = n
return self.post_payload_id
def getPOSTPayloadID(self):
dummy_id = self.getDummyID()
now = datetime.datetime.now(tz_NP)
self.post_payload_id = self.getDummyData()[dummy_id] + dummy_id + 2*(now.day)
return self.post_payload_id
class S(BaseHTTPRequestHandler):
def do_GET(self):
print(self.path)
if '.ico' in self.path: return
if(self.path)=='/info':
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
with open('info.html', 'rb') as file:
self.wfile.write(file.read())
return
nepse = Nepse()
url='https://nepalstock.com.np/api/nots'+str(self.path)
res=nepse.requestAPI(url=url)
self.write_response(res)
def do_POST(self):
try:
nepse = Nepse()
url='https://nepalstock.com.np/api/nots'+str(self.path)
content_len = int(self.headers.get('Content-Length'))
if content_len==0:
res=nepse.requestPOSTAPI(url=url)
else:
post_body = self.rfile.read(content_len).decode("utf-8")
if(post_body.strip()==''):
post_body='{}'
if not '{' in post_body:
post_body=dict(parse_qs(post_body))
post_body={k: v[0] for k, v in post_body.items()}
print(post_body)
res=nepse.requestPOSTAPI(url=url,post_data=json.loads(post_body))
self.write_response(res)
except Exception as e:
print(e)
self.send_error(500)
def write_response(self, content):
self.send_response(content[1])
self.end_headers()
self.wfile.write(str(content[0]).encode('utf-8'))
self.rfile.close()
port = int(os.environ.get("PORT", 5000))
def run(server_class=HTTPServer, handler_class=S, addr="0.0.0.0", port=port):
server_address = (addr, port)
httpd = server_class(server_address, handler_class)
print(f"Starting http server on http://localhost:{port}")
httpd.serve_forever()
run()