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chg: [rssfind] added a brute-force mode -b
to discover potential feed source
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parent
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2 changed files with 79 additions and 7 deletions
11
README.md
11
README.md
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@ -17,7 +17,14 @@ As 2024 marks the resurgence of RSS and Atom[^1], I decided to update my rudimen
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### rssfind
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[rssfind.py](https://github.com/adulau/rss-tools/blob/master/bin/rsscluster.py) is a simple script for discovering RSS or Atom feeds from a URL. It returns an array in JSON format of all the potential feeds discovered.
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[rssfind.py](https://github.com/adulau/rss-tools/blob/master/bin/rsscluster.py) is a simple script designed to discover RSS or Atom feeds from a given URL.
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It employs two techniques:
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- The first involves searching for direct link references to the feed within the HTML page.
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- The second uses a brute-force approach, trying a series of known paths for feeds to determine if they are valid RSS or Atom feeds.
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The script returns an array in JSON format containing all the potential feeds it discovers.
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~~~shell
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Usage: Find RSS or Atom feeds from an URL
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@ -28,6 +35,8 @@ Options:
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-l LINK, --link=LINK http link where to find one or more feed source(s)
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-d, --disable-strict Include empty feeds in the list, default strict is
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enabled
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-b, --brute-force Search RSS/Atom feeds by brute-forcing url path
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(useful if the page is missing a link entry)
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~~~
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### rsscluster
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@ -1,14 +1,41 @@
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#!/usr/bin/python3
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# [rssfind.py](https://github.com/adulau/rss-tools/blob/master/bin/rsscluster.py) is a simple script designed to discover RSS or Atom feeds from a given URL.
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#
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# It employs two techniques:
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#
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# - The first involves searching for direct link references to the feed within the HTML page.
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# - The second uses a brute-force approach, trying a series of known paths for feeds to determine if they are valid RSS or Atom feeds.
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#
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# The script returns an array in JSON format containing all the potential feeds it discovers.
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import sys
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import urllib.parse
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from optparse import OptionParser
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import random
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import feedparser
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import orjson as json
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import requests
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from bs4 import BeautifulSoup as bs4
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brute_force_urls = [
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"index.xml",
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"feed/index.php",
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"feed.xml",
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"feed.atom",
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"feed.rss",
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"feed.json",
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"feed.php",
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"feed.asp",
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"posts.rss",
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"blog.xml",
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"atom.xml",
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"podcasts.xml",
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"main.atom",
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"main.xml",
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]
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random.shuffle(brute_force_urls)
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def findfeeds(url=None, disable_strict=False):
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if url is None:
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@ -50,13 +77,34 @@ def findfeeds(url=None, disable_strict=False):
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return results
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def brutefindfeeds(url=None, disable_strict=False):
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if url is None:
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return None
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found_urls = []
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found_valid_feeds = []
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parsed_url = urllib.parse.urlparse(url)
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for path in brute_force_urls:
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url = f"{parsed_url.scheme}://{parsed_url.hostname}/{path}"
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r = requests.get(url, headers=headers)
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if r.status_code == 200:
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found_urls.append(url)
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for url in list(set(found_urls)):
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f = feedparser.parse(url)
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if f.entries:
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if url not in found_valid_feeds:
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found_valid_feeds.append(url)
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if disable_strict:
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return list(set(found_urls))
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else:
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return found_valid_feeds
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version = "0.2"
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user_agent = f"rssfind.py {version} +https://github.com/adulau/rss-tools"
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feedparser.USER_AGENT = user_agent
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headers = {"User-Agent": user_agent}
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usage = "Find RSS or Atom feeds from an URL\nusage: %prog [options]"
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@ -78,15 +126,30 @@ parser.add_option(
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help="Include empty feeds in the list, default strict is enabled",
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)
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parser.add_option(
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"-b",
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"--brute-force",
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action="store_true",
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default=False,
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help="Search RSS/Atom feeds by brute-forcing url path (useful if the page is missing a link entry)",
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)
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(options, args) = parser.parse_args()
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if not options.link:
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print("URL missing")
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print("Link/url missing - -l option")
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parser.print_help()
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sys.exit(0)
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print(
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json.dumps(findfeeds(options.link, disable_strict=options.disable_strict)).decode(
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"utf-8"
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if not options.brute_force:
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print(
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json.dumps(
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findfeeds(url=options.link, disable_strict=options.disable_strict)
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).decode("utf-8")
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)
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else:
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print(
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json.dumps(
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brutefindfeeds(url=options.link, disable_strict=options.disable_strict)
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).decode("utf-8")
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)
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)
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