Snippets/ShioriFeed.py

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2023-02-13 13:46:26 +01:00
#!/usr/bin/env python3
import traceback
import json
from base64 import urlsafe_b64decode, urlsafe_b64encode
from html import escape as HTMLEscape
from http.server import HTTPServer, BaseHTTPRequestHandler
from socketserver import ThreadingMixIn
from urllib.request import urlopen, Request
from urllib.error import HTTPError, URLError
import threading
# Requirements: urllib3
# Usage: http[s]://<This Server>/http[s]://<Shiori Server>/<Shiori Username (in base64url)>/<Shiori Password (in base64url)>
Host = ('localhost', 8176)
HomeTemplate = '''
<!DOCTYPE html>
<html>
<head>
<title>ShioriFeed</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
body {
margin: 0px;
padding-top: 24px;
padding-bottom: 24px;
padding-left: 10%;
padding-right: 10%;
font-family: sans-serif;
ford-break: break-word;
user-select: none;
-ms-user-select: none;
-moz-user-select: none;
-khtml-user-select: none;
-webkit-user-select: none;
-webkit-touch-callout: none;
}
details {
background: lightgray;
padding: 8px;
}
label > span {
display: inline-block;
padding-bottom: 4px;
}
input {
width: 100%;
height: 2em;
}
input[type="submit"] {
width: calc(100% + 8px);
font-size: large;
}
textarea {
width: 100%;
height: 5em;
resize: none;
}
</style>
</head>
<body>
<h2>ShioriFeed</h2>
<p>
Enter details about your account on a
<a href="https://github.com/go-shiori/">Shiori</a>
server to get an RSS feed link.
</p>
<br />
{{PostResult}}
<p>
<form action="/" method="POST">
<label>
<span>
Server <small>(must start with protocol prefix)</small>:
</span>
<br />
<input type="text" name="Remote" placeholder="http[s]://..."/>
</label>
<br />
<label>
<span>
Username:
</span>
<br />
<input type="text" name="Username" placeholder="erre"/>
</label>
<br />
<label>
<span>
Password:
</span>
<br />
<input type="password" name="Password" placeholder="**********"/>
</label>
<br />
<input type="submit" value="Submit"/>
</form>
</p>
<br />
<p>
<details>
<summary>
Privacy Policy
</summary>
<ul>
<li>
</li>
</ul>
</details>
</p>
<p>
<a href="https://gitlab.com/octospacc/Snippets/-/blob/main/ShioriFeed.py">Source Code</a>
</p>
</body>
</html>
'''
def MkFeed(Data, Remote, Username):
Feed = ''
if not Data['bookmarks']:
return '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:media="http://search.yahoo.com/mrss/"></rss>'
Date = Data['bookmarks'][0]['modified']
for Mark in Data['bookmarks']:
Feed += f'''
<item>
<title>{HTMLEscape(Mark['title'])}</title>
<description>{HTMLEscape(Mark['excerpt'])}</description>
<link>{Remote}/bookmark/{Mark['id']}/content</link>
<pubDate>{Mark['modified']}</pubDate>
<guid isPermaLink="false">{Mark['id']}</guid>
</item>
'''
return f'''\
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:media="http://search.yahoo.com/mrss/">
<channel>
<title>ShioriFeed ({HTMLEscape(Username)})</title>
<pubDate>{Date}</pubDate>
<lastBuildDate>{Date}</lastBuildDate>
{Feed}
</channel>
</rss>
'''
def GetSession(Remote, Username, Password):
try:
Rq = urlopen(Request(f'{Remote}/api/login',
data=json.dumps({'username': Username, 'password': Password, 'remember': True, 'owner': True}).encode(),
headers={'User-Agent': f'ShioriFeed at {Host[0]}'}))
if Rq.code == 200:
Data = {f'{Remote}/{Username}/{Password}': json.loads(Rq.read().decode())['session']}
Sessions.update(Data)
return Data
except Exception as Ex: #(HTTPError, URLError) as Ex:
print(traceback.format_exc())
return False
def RqHandle(Path, Attempt=0):
Rs = {}
try:
RqItems = Path.strip().removeprefix('/').removesuffix('/').strip().split('/')
if RqItems[0] == '':
Rs['Code'] = 200
Rs['Body'] = HomeTemplate.replace('{{PostResult}}', '')
Rs['Content-Type'] = 'text/html'
else:
Remote = '/'.join(RqItems[:-2])
Username = urlsafe_b64decode(RqItems[-2]).decode()
Password = urlsafe_b64decode(RqItems[-1]).decode()
if not f'{Remote}/{Username}/{Password}' in Sessions:
GetSession(Remote, Username, Password)
Rq = urlopen(Request(f'{Remote}/api/bookmarks', headers={
'X-Session-Id': Sessions[f'{Remote}/{Username}/{Password}'],
'User-Agent': f'ShioriFeed at {Host[0]}'}))
Rs['Code'] = Rq.code
if Rq.code == 200:
Rs['Body'] = MkFeed(json.loads(Rq.read().decode()), Remote, Username)
Rs['Content-Type'] = 'application/xml'
elif Rq.code == 500 and Attempt < 1:
GetSession(Remote, Username, Password)
return ReqHandle(Path, Attempt+1)
else:
Rs['Body'] = f'[{Rq.code}] External Server Error\n\n{Rq.read().decode()}'
Rs['Content-Type'] = 'text/plain'
except Exception as Ex: #(HTTPError, URLError) as Ex:
print(traceback.format_exc())
Rs['Code'] = 500
#Rs['Body'] = f'[500] Internal Server Error\n\n{traceback.format_exc()}'
Rs['Body'] = f'[500] Internal Server Error'
Rs['Content-Type'] = 'text/plain'
return Rs
# https://stackoverflow.com/a/51559006
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
Rs = RqHandle(self.path)
self.send_response(Rs['Code'])
self.send_header('Content-Type', Rs['Content-Type'])
self.end_headers()
self.wfile.write(Rs['Body'].encode())
def do_POST(self):
if self.path == '/':
Params = self.rfile.read(int(self.headers['Content-Length']))
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
self.wfile.write(HomeTemplate.replace('{{PostResult}}', f'''
<p>
Here's your RSS feed:
<textarea readonly="true"> </textarea>
</p>
<br />
''').encode())
else:
self.send_response(400)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
self.wfile.write(b'[400] Bad Request')
def log_request(self, code='-', size='-'):
return
class ThreadedHTTPServer(ThreadingMixIn, HTTPServer):
pass
def Serve():
ThreadedHTTPServer(Host, Handler).serve_forever()
if __name__ == '__main__':
Sessions = {}
try:
Serve()
except KeyboardInterrupt:
pass