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#!/usr/bin/env python3
# File: libraries/polaris.py
# Author: bgstack15
# Startdate: 2024-07-06-7 19:11
# SPDX-License-Identifier: GPL-3.0-only
# Title: Library Plugin for Polaris
# Purpose: plugin for polaris-based library websites
# History:
# Usage:
# Reference:
# Improve:
# Dependencies:
# dep-devuan: python3-bs4
from .base import *
import requests, dateutil, base64, os, urllib, sys
# for python3.6 on AlmaLinux 8:
try:
import dateutil.parser
except:
pass
from bs4 import BeautifulSoup
class Library(BaseLibrary):
def __init__(self, config_obj = None, alias = None, username = None, password = None, baseurl = None, session = None):
if config_obj and "username" in config_obj:
self.username = config_obj["username"]
else:
self.username = username
if config_obj and "password" in config_obj:
self.password = config_obj["password"]
else:
self.password = password
if config_obj and "baseurl" in config_obj:
self.baseurl = config_obj["baseurl"]
else:
self.baseurl = baseurl if baseurl else "https://catalog.example.org/polaris"
#/logon.aspx?src=http%3a%2f%2fcatalog.example.org%2fpolaris%2fpatronaccount%2fdefault.aspx%3fctx%3d1.1033.0.0.3&ctx=1.1033.0.0.3"
self.baseurl = self.baseurl.rstrip("/")
if session and type(session) == requests.sessions.Session:
self.session = session
else:
self.session = requests.Session()
if config_obj and "alias" in config_obj:
self.alias = config_obj["alias"]
else:
self.alias = alias if alias else "Polaris-based library"
# asp/M$ components
self.language_code = "1.1033.0.0.3"
self.baseurl_http = self.baseurl.replace("https://","http://")
self.src = f"{self.baseurl_http}/patronaccount/default.aspx?ctx={self.language_code}&ctx={self.language_code}"
self.src2 = urllib.parse.unquote_plus(self.src)
# log in now. Why would we not?
self.login()
def get_checkouts(self, verbose=False):
checked_out_objects = []
b = self.baseurl
s = self.session
# step 1: visit the checked out webpage
# curl 'https://catalog.example.org/polaris/patronaccount/itemsout.aspx' -H 'Referer: https://catalog.example.org/polaris/patronaccount/default.aspx?ctx=1.1033.0.0.3' -H 'Cookie: ASP.NET_SessionId=f4gn4iqzma4ftv3i3x3qo4k3; OrgID=1'
headers = {
"Referer": self.src2,
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
"Priority": "u=1",
}
output = s.get(f"{b}/patronaccount/itemsout.aspx", headers=headers).content.decode()
soup = BeautifulSoup(output, "html.parser")
all_checkouts = soup.find_all("tr",class_=["patron-account__grid-alternating-row","patron-account__grid-row"])
for item in all_checkouts:
images_hrefs = [i["src"] for i in item.find_all("img",attrs={"aria-label":"Cover Image"})]
titles = [i.text for i in item.find_all("span",id="labelTitle")]
renewals_lefts = [i.text for i in item.find_all("span",id="labelRenewalsLeft")]
due_dates = [i.text for i in item.find_all("span",id="labelDueDate")]
formats = item.find_all("img")
formats2 = []
for i in formats:
try:
i["title"]
formats2.append(i["alt"])
except:
pass
#formats = formats2
# for each item we must run the info link:
# curl 'https://catalog.example.org/polaris/patronaccount/components/ajaxiteminfo.aspx?RecID=1296014&VendorObjID=&VendorID=0' -H 'Referer: https://catalog.example.org/polaris/patronaccount/itemsout.aspx' -H 'Cookie: ASP.NET_SessionId=b0ssctcysdrbcfy3jlwwdvr0; OrgID=1'
info_links = [i["href"].replace("javascript:showModalBasic('","").replace("')","") for i in item.find_all("a",title="Item Details")]
# obj MUST HAVE patron, title, format, barcode, due, img
# obj SHOULD HAVE img50, img_href
if verbose:
print(f"DEBUG: got images_hrefs {images_hrefs}",file=sys.stderr)
print(f"DEBUG: got titles {titles}",file=sys.stderr)
print(f"DEBUG: got renewals_lefts {renewals_lefts}",file=sys.stderr)
print(f"DEBUG: got due_dates {due_dates}",file=sys.stderr)
print(f"DEBUG: got formats {formats}",file=sys.stderr)
print(f"DEBUG: got formats2 {formats2}",file=sys.stderr)
x = -1
for i in titles:
x += 1
img_response = s.get(images_hrefs[x])
img_b64 = base64.b64encode(img_response.content).decode()
img_type = img_response.headers["Content-Type"]
details_response = s.get(info_links[x]).content.decode().replace(" ","")
soup2 = BeautifulSoup(details_response,"html.parser")
#details_labels = [i.text for i in soup2.find_all("td",class_="nsm-label") if i.text]
#details_texts = [i.text for i in soup2.find_all("td",class_="") if i.text]
#details_texts = [i.text for i in soup2.find_all("td") if ("class" in i and "nsm-label" not in i["class"]) or ("class" not in i)]
details = [i.text for i in soup2.find_all("td")]
details_labels = details[::3]
details_texts = details[2::3]
details_dict = dict(zip(details_labels,details_texts))
if verbose:
print(f"DEBUG: labels {details_labels}",file=sys.stderr)
print(f"DEBUG: texts {details_texts}",file=sys.stderr)
print(f"DEBUG: details_dict {details_dict}",file=sys.stderr)
obj = {
"patron": self.alias,
"title": i,
"format": formats2[x],
"barcode": details_dict["Item Barcode"],
"due": dateutil.parser.parse(due_dates[x]),
"img_href": images_hrefs[x],
"renewals_left": renewals_lefts[x],
"img_type": img_type,
"img50": img_b64[:50],
"img": img_b64,
"checkout_date": dateutil.parser.parse(details_dict["Date of Checkout"]),
"renewals_left": details_dict["Renewals Permitted"],
}
checked_out_objects.append(obj)
return checked_out_objects
# Boilerplate
def get_class_name(self):
return os.path.basename(__file__).replace(".py","")
def login(self):
b = self.baseurl
s = self.session
# step 1: visit logon page
response = s.get(f"{b}/logon.aspx?src={self.src2}").content
# probably will need to get the __VIEWSTATE, VIEWSTATEGENERATOR, and Eventvalidation
soup = BeautifulSoup(response, "html.parser")
form = soup.find("form", id = "formMain")
viewstate = form.find("input", id = "__VIEWSTATE")["value"]
viewstategenerator = form.find("input", id = "__VIEWSTATEGENERATOR")["value"]
eventvalidation = form.find("input", id = "__EVENTVALIDATION")["value"]
# step 2: submit logon
# curl 'https://catalog.example.org/polaris/logon.aspx?src=http%3a%2f%2fcatalog.example.org%2fpolaris%2fpatronaccount%2fdefault.aspx%3fctx%3d1.1033.0.0.3&ctx=1.1033.0.0.3' -X POST -H 'Content-Type: application/x-www-form-urlencoded' -H 'Referer: https://catalog.example.org/polaris/logon.aspx?src=http%3a%2f%2fcatalog.example.org%2fpolaris%2fpatronaccount%2fdefault.aspx%3fctx%3d1.1033.0.0.3&ctx=1.1033.0.0.3' -H 'Cookie: ASP.NET_SessionId=vxcsdp1cj0hx4pw5xzyvjzmv; OrgID=1' --data-raw '__VIEWSTATE=%2FwEPDwUTRUNCATED_TRUNCATEDAFFNraXAgdG8gbWFpbiBjb250ZW50EVNraXAgdG8gbWFpbiBtZW51ZGR1k%2BAxg5Y9OX3bD7t2P%2FT5kMtk3%2F5W7qyJnA%2B8VzrtGg%3D%3D&__VIEWSTATEGENERATOR=ADF38500&__EVENTVALIDATION=%2FwEdAAR9XqzqHC%2FBfgLuDOYb7iPsH5Q20m6JqSZMIYtkRxbfSedJDH80kUkzbS%2FLyzKWHn1t7yJCbczH%2Bwz7aZL%2F8kJqv109lw0hamEH0qk8Qgc0RXgof%2BWcR4FnrI1R3xMIkD4%3D&ctl00%24BodyMainContent%24textboxBarcodeUsername=userNameHere&ctl00%24BodyMainContent%24textboxPassword=12Pass34&ctl00%24BodyMainContent%24buttonSubmit=Log+In'
headers = {
"Content-Type": "application/x-www-form-urlencoded",
"Referer": f"{b}/logon.aspx?src={self.src2}",
#"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:127.0) Gecko/20100101 Firefox/127.0",
}
data = {
"__VIEWSTATE": viewstate,
"__VIEWSTATEGENERATOR": viewstategenerator,
"__EVENTVALIDATION": eventvalidation,
"ctl00$BodyMainContent$textboxBarcodeUsername": self.username,
"ctl00$BodyMainContent$textboxPassword": self.password,
"ctl00$BodyMainContent$buttonSubmit": "Log In",
}
# this always returns a 200, even if the user login failed
url = f"{b}/logon.aspx?src={self.src2}"
response = s.post(url, headers=headers, data=data).content.decode()
# success is determined by absence of "invalid Library Card" or "Please try again"
for msg in ["invalid Library Card", "Please enter your Library", "Please try again"]:
if msg in response:
raise Exception(f"Failed to log in to {self.alias}")
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