Dockerfile: remove confusing one-liner code

To avoid name collision with the built-in cgi lib

Dockerfile

@@ -5,4 +5,4 @@ RUN apk add python3 py3-lxml py3-gunicorn py3-pip git
 ADD . /app
 RUN pip3 install /app
 
-CMD gunicorn --bind 0.0.0.0:8080 -w 4 morss:cgi_standalone_app
+CMD gunicorn --bind 0.0.0.0:8080 -w 4 morss

README.md

@@ -73,35 +73,56 @@ morss accepts some arguments, to lightly alter the output of morss. Arguments
 may need to have a value (usually a string or a number). In the different "Use
 cases" below is detailed how to pass those arguments to morss.
 
-The arguments are:
+The list of arguments can be obtained by running `morss --help`
 
+```
+usage: morss [-h] [--format {rss,json,html,csv}] [--search STRING] [--clip] [--indent] [--cache] [--force] [--proxy] [--newest] [--firstlink] [--items XPATH] [--item_link XPATH]
+             [--item_title XPATH] [--item_content XPATH] [--item_time XPATH] [--nolink] [--noref] [--debug]
+             url
+
+Get full-text RSS feeds
+
+positional arguments:
+  url                   feed url
+
+optional arguments:
+  -h, --help            show this help message and exit
+
+output:
+  --format {rss,json,html,csv}
+                        output format
+  --search STRING       does a basic case-sensitive search in the feed
+  --clip                stick the full article content under the original feed content (useful for twitter)
+  --indent              returns indented XML or JSON, takes more place, but human-readable
+
+action:
+  --cache               only take articles from the cache (ie. don't grab new articles' content), so as to save time
+  --force               force refetch the rss feed and articles
+  --proxy               doesn't fill the articles
+  --newest              return the feed items in chronological order (morss ohterwise shows the items by appearing order)
+  --firstlink           pull the first article mentioned in the description instead of the default link
+
+custom feeds:
+  --items XPATH         (mandatory to activate the custom feeds function) xpath rule to match all the RSS entries
+  --item_link XPATH     xpath rule relative to items to point to the entry's link
+  --item_title XPATH    entry's title
+  --item_content XPATH  entry's content
+  --item_time XPATH     entry's date & time (accepts a wide range of time formats)
+
+misc:
+  --nolink              drop links, but keeps links' inner text
+  --noref               drop items' link
+  --silent              don't output the final RSS (useless on its own, but can be nice when debugging)
+
+GNU AGPLv3 code
+```
+
+Further options:
 - Change what morss does
-	- `json`: output as JSON
+- Environment variable `DEBUG=`: to have some feedback from the script execution. Useful for debugging. On Apache, can be set via the `SetEnv` instruction (see sample `.htaccess` provided).
-	- `html`: outpout as HTML
-	- `csv`: outpout as CSV
-	- `proxy`: doesn't fill the articles
-	- `clip`: stick the full article content under the original feed content (useful for twitter)
-	- `search=STRING`: does a basic case-sensitive search in the feed
-- Advanced
-	- `csv`: export to csv
-	- `indent`: returns indented XML or JSON, takes more place, but human-readable
-	- `nolink`: drop links, but keeps links' inner text
-	- `noref`: drop items' link
-	- `cache`: only take articles from the cache (ie. don't grab new articles' content), so as to save time
-	- `debug`: to have some feedback from the script execution. Useful for debugging
-	- `force`: force refetch the rss feed and articles
-	- `silent`: don't output the final RSS (useless on its own, but can be nice when debugging)
-	- `newest`: return the feed items in chronological order (morss ohterwise shows the items by appearing order)
-- http server only
 - `callback=NAME`: for JSONP calls
 - `cors`: allow Cross-origin resource sharing (allows XHR calls from other servers)
 - `txt`: changes the http content-type to txt (for faster "`view-source:`")
-- Custom feeds: you can turn any HTML page into a RSS feed using morss, using xpath rules. The article content will be fetched as usual (with readabilite). Please note that you will have to **replace** any `/` in your rule with a `|` when using morss as a webserver
-	- `items`: (**mandatory** to activate the custom feeds function) xpath rule to match all the RSS entries
-	- `item_link`: xpath rule relative to `items` to point to the entry's link
-	- `item_title`: entry's title
-	- `item_content`: entry's description
-	- `item_time`: entry's date & time (accepts a wide range of time formats)
 
 ## Use cases
 
@@ -150,7 +171,7 @@ uwsgi --http :8080 --plugin python --wsgi-file main.py
 #### Using Gunicorn
 
 ```shell
-gunicorn morss:cgi_standalone_app
+gunicorn morss
 ```
 
 #### Using docker
@@ -162,12 +183,6 @@ docker build https://git.pictuga.com/pictuga/morss.git -t morss
 docker run -p 8080:8080 morss
 ```
 
-In one line
-
-```shell
-docker run -p 8080:8080 $(docker build -q https://git.pictuga.com/pictuga/morss.git)
-```
-
 With docker-compose:
 
 ```yml
@@ -193,7 +208,7 @@ without any argument, on port 8080.
 morss
 ```
 
-You can change the port like this `morss 9000`.
+You can change the port using environment variables like this `PORT=9000 morss`.
 
 #### Passing arguments
 
@@ -213,9 +228,9 @@ Works like a charm with [Tiny Tiny RSS](http://tt-rss.org/redmine/projects/tt-rs
 
 Run:
 ```
-morss [argwithoutvalue] [argwithvalue=value] [...] FEEDURL
+morss [--argwithoutvalue] [--argwithvalue=value] [...] FEEDURL
 ```
-For example: `morss debug http://feeds.bbci.co.uk/news/rss.xml`
+For example: `morss --debug http://feeds.bbci.co.uk/news/rss.xml`
 
 *(Brackets indicate optional text)*
 
@@ -275,13 +290,15 @@ output = morss.FeedFormat(rss, options, 'unicode') # formats final feed
 
 ## Cache information
 
-morss uses caching to make loading faster. There are 3 possible cache backends
+morss uses caching to make loading faster. There are 3 possible cache backends,
-(visible in `morss/crawler.py`):
+which can be picked via environment variables:
 
-- `{}`: a simple python in-memory dict() object
+- `(nothing/default)`: a simple python in-memory dict() object.
-- `SQLiteCache`: sqlite3 cache. Default file location is in-memory (i.e. it will
+- `CACHE=sqlite`: sqlite3 cache. Default file location is in-memory (i.e. it
-be cleared every time the program is run
+will be cleared every time the program is run). Path can be defined with
-- `MySQLCacheHandler`
+`SQLITE_PATH`.
+- `CACHE=mysql`: MySQL cache. Connection can be defined with the following
+environment variables: `MYSQL_USER`, `MYSQL_PWD`, `MYSQL_DB`, `MYSQL_HOST`
 
 ## Configuration
 ### Length limitation
@@ -289,7 +306,7 @@ be cleared every time the program is run
 When parsing long feeds, with a lot of items (100+), morss might take a lot of
 time to parse it, or might even run into a memory overflow on some shared
 hosting plans (limits around 10Mb), in which case you might want to adjust the
-different values at the top of the script.
+below settings via environment variables.
 
 - `MAX_TIME` sets the maximum amount of time spent *fetching* articles, more time might be spent taking older articles from cache. `-1` for unlimited.
 - `MAX_ITEM` sets the maximum number of articles to fetch. `-1` for unlimited. More articles will be taken from cache following the nexts settings.

main.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
-from morss import main, cgi_standalone_app as application
+from morss.__main__ import main
+from morss.wsgi import application
 
 if __name__ == '__main__':
     main()

morss/__init__.py

@@ -1,2 +1,3 @@
 # ran on `import morss`
 from .morss import *
+from .wsgi import application

morss/__main__.py

@@ -1,5 +1,54 @@
 # ran on `python -m morss`
-from .morss import main
+
+import os
+import sys
+
+from . import wsgi
+from . import cli
+
+from .morss import MorssException
+
+import wsgiref.simple_server
+import wsgiref.handlers
+
+
+PORT = int(os.getenv('PORT', 8080))
+
+
+def main():
+    if 'REQUEST_URI' in os.environ:
+        # mod_cgi (w/o file handler)
+
+        app = wsgi.cgi_app
+        app = wsgi.cgi_dispatcher(app)
+        app = wsgi.cgi_error_handler(app)
+        app = wsgi.cgi_encode(app)
+
+        wsgiref.handlers.CGIHandler().run(app)
+
+    elif len(sys.argv) <= 1:
+        # start internal (basic) http server (w/ file handler)
+
+        app = wsgi.cgi_app
+        app = wsgi.cgi_file_handler(app)
+        app = wsgi.cgi_dispatcher(app)
+        app = wsgi.cgi_error_handler(app)
+        app = wsgi.cgi_encode(app)
+
+        print('Serving http://localhost:%s/' % port)
+        httpd = wsgiref.simple_server.make_server('', PORT, app)
+        httpd.serve_forever()
+
+    else:
+        # as a CLI app
+        try:
+            cli.cli_app()
+
+        except (KeyboardInterrupt, SystemExit):
+            raise
+
+        except Exception as e:
+            print('ERROR: %s' % e.message)
 
 if __name__ == '__main__':
     main()

morss/cli.py

@@ -0,0 +1,51 @@
+import sys
+import os.path
+import argparse
+
+from .morss import FeedFetch, FeedGather, FeedFormat
+from .morss import Options
+
+
+def cli_app():
+    parser = argparse.ArgumentParser(
+        prog='morss',
+        description='Get full-text RSS feeds',
+        epilog='GNU AGPLv3 code'
+        )
+
+    parser.add_argument('url', help='feed url')
+
+    group = parser.add_argument_group('output')
+    group.add_argument('--format', default='rss', choices=('rss', 'json', 'html', 'csv'), help='output format')
+    group.add_argument('--search', action='store', type=str, metavar='STRING', help='does a basic case-sensitive search in the feed')
+    group.add_argument('--clip', action='store_true', help='stick the full article content under the original feed content (useful for twitter)')
+    group.add_argument('--indent', action='store_true', help='returns indented XML or JSON, takes more place, but human-readable')
+
+    group = parser.add_argument_group('action')
+    group.add_argument('--cache', action='store_true', help='only take articles from the cache (ie. don\'t grab new articles\' content), so as to save time')
+    group.add_argument('--force', action='store_true', help='force refetch the rss feed and articles')
+    group.add_argument('--proxy', action='store_true', help='doesn\'t fill the articles')
+    group.add_argument('--newest', action='store_true', help='return the feed items in chronological order (morss ohterwise shows the items by appearing order)')
+    group.add_argument('--firstlink', action='store_true', help='pull the first article mentioned in the description instead of the default link')
+
+    group = parser.add_argument_group('custom feeds')
+    group.add_argument('--items', action='store', type=str, metavar='XPATH', help='(mandatory to activate the custom feeds function) xpath rule to match all the RSS entries')
+    group.add_argument('--item_link', action='store', type=str, metavar='XPATH', help='xpath rule relative to items to point to the entry\'s link')
+    group.add_argument('--item_title', action='store', type=str, metavar='XPATH', help='entry\'s title')
+    group.add_argument('--item_content', action='store', type=str, metavar='XPATH', help='entry\'s content')
+    group.add_argument('--item_time', action='store', type=str, metavar='XPATH', help='entry\'s date & time (accepts a wide range of time formats)')
+
+    group = parser.add_argument_group('misc')
+    group.add_argument('--nolink', action='store_true', help='drop links, but keeps links\' inner text')
+    group.add_argument('--noref', action='store_true', help='drop items\' link')
+    group.add_argument('--silent', action='store_true', help='don\'t output the final RSS (useless on its own, but can be nice when debugging)')
+
+    options = Options(vars(parser.parse_args()))
+    url = options.url
+
+    url, rss = FeedFetch(url, options)
+    rss = FeedGather(rss, url, options)
+    out = FeedFormat(rss, options, 'unicode')
+
+    if not options.silent:
+        print(out)

morss/crawler.py

@@ -1,3 +1,4 @@
+import os
 import sys
 
 import zlib
@@ -388,9 +389,6 @@ class HTTPRefreshHandler(BaseHandler):
     https_response = http_response
 
 
-default_cache = {}
-
-
 class CacheHandler(BaseHandler):
     " Cache based on etags/last-modified "
 
@@ -659,6 +657,22 @@ class MySQLCacheHandler(BaseCache):
                 (url,) + value + value)
 
 
+if 'CACHE' in os.environ:
+    if os.environ['CACHE'] == 'mysql':
+        default_cache = MySQLCacheHandler(
+            user = os.getenv('MYSQL_USER'),
+            password = os.getenv('MYSQL_PWD'),
+            database = os.getenv('MYSQL_DB'),
+            host = os.getenv('MYSQL_HOST')
+        )
+
+    elif os.environ['CACHE'] == 'sqlite':
+        default_cache = SQLiteCache(os.getenv('SQLITE_PATH', ':memory:'))
+
+else:
+        default_cache = {}
+
+
 if __name__ == '__main__':
     req = adv_get(sys.argv[1] if len(sys.argv) > 1 else 'https://morss.it')
 

morss/morss.py

@@ -1,6 +1,4 @@
-import sys
 import os
-import os.path
 
 import time
 from datetime import datetime
@@ -16,56 +14,39 @@ from . import feeds
 from . import crawler
 from . import readabilite
 
-import wsgiref.simple_server
-import wsgiref.handlers
-import cgitb
-
 
 try:
     # python 2
     from httplib import HTTPException
-    from urllib import unquote
     from urlparse import urlparse, urljoin, parse_qs
 except ImportError:
     # python 3
     from http.client import HTTPException
-    from urllib.parse import unquote
     from urllib.parse import urlparse, urljoin, parse_qs
 
-MAX_ITEM = 5  # cache-only beyond
-MAX_TIME = 2  # cache-only after (in sec)
 
-LIM_ITEM = 10  # deletes what's beyond
+MAX_ITEM = int(os.getenv('MAX_ITEM', 5)) # cache-only beyond
-LIM_TIME = 2.5  # deletes what's after
+MAX_TIME = int(os.getenv('MAX_TIME', 2)) # cache-only after (in sec)
 
-DELAY = 10 * 60  # xml cache & ETag cache (in sec)
+LIM_ITEM = int(os.getenv('LIM_ITEM', 10)) # deletes what's beyond
-TIMEOUT = 4  # http timeout (in sec)
+LIM_TIME = int(os.getenv('LIM_TIME', 2.5)) # deletes what's after
 
-DEBUG = False
+DELAY = int(os.getenv('DELAY', 10 * 60)) # xml cache & ETag cache (in sec)
-PORT = 8080
+TIMEOUT = int(os.getenv('TIMEOUT', 4)) # http timeout (in sec)
-
-
-def filterOptions(options):
-    return options
-
-    # example of filtering code below
-
-    #allowed = ['proxy', 'clip', 'cache', 'force', 'silent', 'pro', 'debug']
-    #filtered = dict([(key,value) for (key,value) in options.items() if key in allowed])
-
-    #return filtered
 
 
 class MorssException(Exception):
     pass
 
 
-def log(txt, force=False):
+def log(txt):
-    if DEBUG or force:
+    if 'DEBUG' in os.environ:
         if 'REQUEST_URI' in os.environ:
+            # when running on Apache
             open('morss.log', 'a').write("%s\n" % repr(txt))
 
         else:
+            # when using internal server or cli
             print(repr(txt))
 
 
@@ -107,29 +88,6 @@ class Options:
         return key in self.options
 
 
-def parseOptions(options):
-    """ Turns ['md=True'] into {'md':True} """
-    out = {}
-
-    for option in options:
-        split = option.split('=', 1)
-
-        if len(split) > 1:
-            if split[0].lower() == 'true':
-                out[split[0]] = True
-
-            elif split[0].lower() == 'false':
-                out[split[0]] = False
-
-            else:
-                out[split[0]] = split[1]
-
-        else:
-            out[split[0]] = True
-
-    return out
-
-
 def ItemFix(item, options, feedurl='/'):
     """ Improves feed items (absolute links, resolve feedburner links, etc) """
 
@@ -399,24 +357,24 @@ def FeedFormat(rss, options, encoding='utf-8'):
         else:
             raise MorssException('Invalid callback var name')
 
-    elif options.json:
+    elif options.format == 'json':
         if options.indent:
             return rss.tojson(encoding=encoding, indent=4)
 
         else:
             return rss.tojson(encoding=encoding)
 
-    elif options.csv:
+    elif options.format == 'csv':
         return rss.tocsv(encoding=encoding)
 
-    elif options.html:
+    elif options.format == 'html':
         if options.indent:
             return rss.tohtml(encoding=encoding, pretty_print=True)
 
         else:
             return rss.tohtml(encoding=encoding)
 
-    else:
+    else: # i.e. format == 'rss'
         if options.indent:
             return rss.torss(xml_declaration=(not encoding == 'unicode'), encoding=encoding, pretty_print=True)
 
@@ -437,299 +395,3 @@ def process(url, cache=None, options=None):
     rss = FeedGather(rss, url, options)
 
     return FeedFormat(rss, options, 'unicode')
-
-
-def cgi_parse_environ(environ):
-    # get options
-
-    if 'REQUEST_URI' in environ:
-        url = environ['REQUEST_URI'][1:]
-    else:
-        url = environ['PATH_INFO'][1:]
-
-        if environ['QUERY_STRING']:
-            url += '?' + environ['QUERY_STRING']
-
-    url = re.sub(r'^/?(cgi/)?(morss.py|main.py)/', '', url)
-
-    if url.startswith(':'):
-        split = url.split('/', 1)
-
-        raw_options = unquote(split[0]).replace('|', '/').replace('\\\'', '\'').split(':')[1:]
-
-        if len(split) > 1:
-            url = split[1]
-        else:
-            url = ''
-
-    else:
-        raw_options = []
-
-    # init
-    options = Options(filterOptions(parseOptions(raw_options)))
-
-    global DEBUG
-    DEBUG = options.debug
-
-    return (url, options)
-
-
-def cgi_app(environ, start_response):
-    url, options = cgi_parse_environ(environ)
-
-    headers = {}
-
-    # headers
-    headers['status'] = '200 OK'
-    headers['cache-control'] = 'max-age=%s' % DELAY
-    headers['x-content-type-options'] = 'nosniff' # safari work around
-
-    if options.cors:
-        headers['access-control-allow-origin'] = '*'
-
-    if options.html:
-        headers['content-type'] = 'text/html'
-    elif options.txt or options.silent:
-        headers['content-type'] = 'text/plain'
-    elif options.json:
-        headers['content-type'] = 'application/json'
-    elif options.callback:
-        headers['content-type'] = 'application/javascript'
-    elif options.csv:
-        headers['content-type'] = 'text/csv'
-        headers['content-disposition'] = 'attachment; filename="feed.csv"'
-    else:
-        headers['content-type'] = 'text/xml'
-
-    headers['content-type'] += '; charset=utf-8'
-
-    crawler.default_cache = crawler.SQLiteCache(os.path.join(os.getcwd(), 'morss-cache.db'))
-
-    # get the work done
-    url, rss = FeedFetch(url, options)
-
-    start_response(headers['status'], list(headers.items()))
-
-    rss = FeedGather(rss, url, options)
-    out = FeedFormat(rss, options)
-
-    if options.silent:
-        return ['']
-
-    else:
-        return [out]
-
-
-def middleware(func):
-    " Decorator to turn a function into a wsgi middleware "
-    # This is called when parsing the "@middleware" code
-
-    def app_builder(app):
-        # This is called when doing app = cgi_wrapper(app)
-
-        def app_wrap(environ, start_response):
-            # This is called when a http request is being processed
-
-            return func(environ, start_response, app)
-
-        return app_wrap
-
-    return app_builder
-
-
-@middleware
-def cgi_file_handler(environ, start_response, app):
-    " Simple HTTP server to serve static files (.html, .css, etc.) "
-
-    files = {
-        '': 'text/html',
-        'index.html': 'text/html',
-        'sheet.xsl': 'text/xsl'}
-
-    if 'REQUEST_URI' in environ:
-        url = environ['REQUEST_URI'][1:]
-
-    else:
-        url = environ['PATH_INFO'][1:]
-
-    if url in files:
-        headers = {}
-
-        if url == '':
-            url = 'index.html'
-
-        paths = [os.path.join(sys.prefix, 'share/morss/www', url),
-            os.path.join(os.path.dirname(__file__), '../www', url)]
-
-        for path in paths:
-            try:
-                body = open(path, 'rb').read()
-
-                headers['status'] = '200 OK'
-                headers['content-type'] = files[url]
-                start_response(headers['status'], list(headers.items()))
-                return [body]
-
-            except IOError:
-                continue
-
-        else:
-            # the for loop did not return, so here we are, i.e. no file found
-            headers['status'] = '404 Not found'
-            start_response(headers['status'], list(headers.items()))
-            return ['Error %s' % headers['status']]
-
-    else:
-        return app(environ, start_response)
-
-
-def cgi_get(environ, start_response):
-    url, options = cgi_parse_environ(environ)
-
-    # get page
-    req = crawler.adv_get(url=url, timeout=TIMEOUT)
-
-    if req['contenttype'] in ['text/html', 'application/xhtml+xml', 'application/xml']:
-        if options.get == 'page':
-            html = readabilite.parse(req['data'], encoding=req['encoding'])
-            html.make_links_absolute(req['url'])
-
-            kill_tags = ['script', 'iframe', 'noscript']
-
-            for tag in kill_tags:
-                for elem in html.xpath('//'+tag):
-                    elem.getparent().remove(elem)
-
-            output = lxml.etree.tostring(html.getroottree(), encoding='utf-8', method='html')
-
-        elif options.get == 'article':
-            output = readabilite.get_article(req['data'], url=req['url'], encoding_in=req['encoding'], encoding_out='utf-8', debug=options.debug)
-
-        else:
-            raise MorssException('no :get option passed')
-
-    else:
-        output = req['data']
-
-    # return html page
-    headers = {'status': '200 OK', 'content-type': 'text/html; charset=utf-8', 'X-Frame-Options': 'SAMEORIGIN'} # SAMEORIGIN to avoid potential abuse
-    start_response(headers['status'], list(headers.items()))
-    return [output]
-
-
-dispatch_table = {
-    'get': cgi_get,
-    }
-
-
-@middleware
-def cgi_dispatcher(environ, start_response, app):
-    url, options = cgi_parse_environ(environ)
-
-    for key in dispatch_table.keys():
-        if key in options:
-            return dispatch_table[key](environ, start_response)
-
-    return app(environ, start_response)
-
-
-@middleware
-def cgi_error_handler(environ, start_response, app):
-    try:
-        return app(environ, start_response)
-
-    except (KeyboardInterrupt, SystemExit):
-        raise
-
-    except Exception as e:
-        headers = {'status': '500 Oops', 'content-type': 'text/html'}
-        start_response(headers['status'], list(headers.items()), sys.exc_info())
-        log('ERROR: %s' % repr(e), force=True)
-        return [cgitb.html(sys.exc_info())]
-
-
-@middleware
-def cgi_encode(environ, start_response, app):
-    out = app(environ, start_response)
-    return [x if isinstance(x, bytes) else str(x).encode('utf-8') for x in out]
-
-
-cgi_standalone_app = cgi_encode(cgi_error_handler(cgi_dispatcher(cgi_file_handler(cgi_app))))
-
-
-def cli_app():
-    options = Options(filterOptions(parseOptions(sys.argv[1:-1])))
-    url = sys.argv[-1]
-
-    global DEBUG
-    DEBUG = options.debug
-
-    crawler.default_cache = crawler.SQLiteCache(os.path.expanduser('~/.cache/morss-cache.db'))
-
-    url, rss = FeedFetch(url, options)
-    rss = FeedGather(rss, url, options)
-    out = FeedFormat(rss, options, 'unicode')
-
-    if not options.silent:
-        print(out)
-
-    log('done')
-
-
-def isInt(string):
-    try:
-        int(string)
-        return True
-
-    except ValueError:
-        return False
-
-
-def main():
-    if 'REQUEST_URI' in os.environ:
-        # mod_cgi
-
-        app = cgi_app
-        app = cgi_dispatcher(app)
-        app = cgi_error_handler(app)
-        app = cgi_encode(app)
-
-        wsgiref.handlers.CGIHandler().run(app)
-
-    elif len(sys.argv) <= 1 or isInt(sys.argv[1]):
-        # start internal (basic) http server
-
-        if len(sys.argv) > 1 and isInt(sys.argv[1]):
-            argPort = int(sys.argv[1])
-            if argPort > 0:
-                port = argPort
-
-            else:
-                raise MorssException('Port must be positive integer')
-
-        else:
-            port = PORT
-
-        app = cgi_app
-        app = cgi_file_handler(app)
-        app = cgi_dispatcher(app)
-        app = cgi_error_handler(app)
-        app = cgi_encode(app)
-
-        print('Serving http://localhost:%s/' % port)
-        httpd = wsgiref.simple_server.make_server('', port, app)
-        httpd.serve_forever()
-
-    else:
-        # as a CLI app
-        try:
-            cli_app()
-
-        except (KeyboardInterrupt, SystemExit):
-            raise
-
-        except Exception as e:
-            print('ERROR: %s' % e.message)
-
-if __name__ == '__main__':
-    main()

morss/readabilite.py

@@ -125,7 +125,7 @@ def score_node(node):
 
     if wc != 0:
         wca = count_words(' '.join([x.text_content() for x in node.findall('.//a')]))
-        score = score * ( 1 - float(wca)/wc )
+        score = score * ( 1 - 2 * float(wca)/wc )
 
     return score
 

morss/wsgi.py

@@ -0,0 +1,257 @@
+import sys
+import os.path
+import re
+import lxml.etree
+
+import cgitb
+
+try:
+    # python 2
+    from urllib import unquote
+except ImportError:
+    # python 3
+    from urllib.parse import unquote
+
+from . import crawler
+from . import readabilite
+from .morss import FeedFetch, FeedGather, FeedFormat
+from .morss import Options, log, TIMEOUT, DELAY, MorssException
+
+from . import cred
+
+
+def parse_options(options):
+    """ Turns ['md=True'] into {'md':True} """
+    out = {}
+
+    for option in options:
+        split = option.split('=', 1)
+
+        if len(split) > 1:
+            out[split[0]] = split[1]
+
+        else:
+            out[split[0]] = True
+
+    return out
+
+
+def cgi_parse_environ(environ):
+    # get options
+
+    if 'REQUEST_URI' in environ:
+        # when running on Apache
+        url = environ['REQUEST_URI'][1:]
+
+    else:
+        # when using internal server
+        url = environ['PATH_INFO'][1:]
+
+        if environ['QUERY_STRING']:
+            url += '?' + environ['QUERY_STRING']
+
+    url = re.sub(r'^/?(cgi/)?(morss.py|main.py)/', '', url)
+
+    if url.startswith(':'):
+        split = url.split('/', 1)
+
+        raw_options = unquote(split[0]).replace('|', '/').replace('\\\'', '\'').split(':')[1:]
+
+        if len(split) > 1:
+            url = split[1]
+
+        else:
+            url = ''
+
+    else:
+        raw_options = []
+
+    # init
+    options = Options(parse_options(raw_options))
+
+    return (url, options)
+
+
+def cgi_app(environ, start_response):
+    url, options = cgi_parse_environ(environ)
+
+    headers = {}
+
+    # headers
+    headers['status'] = '200 OK'
+    headers['cache-control'] = 'max-age=%s' % DELAY
+    headers['x-content-type-options'] = 'nosniff' # safari work around
+
+    if options.cors:
+        headers['access-control-allow-origin'] = '*'
+
+    if options.format == 'html':
+        headers['content-type'] = 'text/html'
+    elif options.txt or options.silent:
+        headers['content-type'] = 'text/plain'
+    elif options.format == 'json':
+        headers['content-type'] = 'application/json'
+    elif options.callback:
+        headers['content-type'] = 'application/javascript'
+    elif options.format == 'csv':
+        headers['content-type'] = 'text/csv'
+        headers['content-disposition'] = 'attachment; filename="feed.csv"'
+    else:
+        headers['content-type'] = 'text/xml'
+
+    headers['content-type'] += '; charset=utf-8'
+
+    # get the work done
+    url, rss = FeedFetch(url, options)
+
+    start_response(headers['status'], list(headers.items()))
+
+    rss = FeedGather(rss, url, options)
+    out = FeedFormat(rss, options)
+
+    if options.silent:
+        return ['']
+
+    else:
+        return [out]
+
+
+def middleware(func):
+    " Decorator to turn a function into a wsgi middleware "
+    # This is called when parsing the "@middleware" code
+
+    def app_builder(app):
+        # This is called when doing app = cgi_wrapper(app)
+
+        def app_wrap(environ, start_response):
+            # This is called when a http request is being processed
+
+            return func(environ, start_response, app)
+
+        return app_wrap
+
+    return app_builder
+
+
+@middleware
+def cgi_file_handler(environ, start_response, app):
+    " Simple HTTP server to serve static files (.html, .css, etc.) "
+
+    files = {
+        '': 'text/html',
+        'index.html': 'text/html',
+        'sheet.xsl': 'text/xsl'}
+
+    if 'REQUEST_URI' in environ:
+        url = environ['REQUEST_URI'][1:]
+
+    else:
+        url = environ['PATH_INFO'][1:]
+
+    if url in files:
+        headers = {}
+
+        if url == '':
+            url = 'index.html'
+
+        paths = [os.path.join(sys.prefix, 'share/morss/www', url),
+            os.path.join(os.path.dirname(__file__), '../www', url)]
+
+        for path in paths:
+            try:
+                body = open(path, 'rb').read()
+
+                headers['status'] = '200 OK'
+                headers['content-type'] = files[url]
+                start_response(headers['status'], list(headers.items()))
+                return [body]
+
+            except IOError:
+                continue
+
+        else:
+            # the for loop did not return, so here we are, i.e. no file found
+            headers['status'] = '404 Not found'
+            start_response(headers['status'], list(headers.items()))
+            return ['Error %s' % headers['status']]
+
+    else:
+        return app(environ, start_response)
+
+
+def cgi_get(environ, start_response):
+    url, options = cgi_parse_environ(environ)
+
+    # get page
+    req = crawler.adv_get(url=url, timeout=TIMEOUT)
+
+    if req['contenttype'] in ['text/html', 'application/xhtml+xml', 'application/xml']:
+        if options.get == 'page':
+            html = readabilite.parse(req['data'], encoding=req['encoding'])
+            html.make_links_absolute(req['url'])
+
+            kill_tags = ['script', 'iframe', 'noscript']
+
+            for tag in kill_tags:
+                for elem in html.xpath('//'+tag):
+                    elem.getparent().remove(elem)
+
+            output = lxml.etree.tostring(html.getroottree(), encoding='utf-8', method='html')
+
+        elif options.get == 'article':
+            output = readabilite.get_article(req['data'], url=req['url'], encoding_in=req['encoding'], encoding_out='utf-8', debug=options.debug)
+
+        else:
+            raise MorssException('no :get option passed')
+
+    else:
+        output = req['data']
+
+    # return html page
+    headers = {'status': '200 OK', 'content-type': 'text/html; charset=utf-8', 'X-Frame-Options': 'SAMEORIGIN'} # SAMEORIGIN to avoid potential abuse
+    start_response(headers['status'], list(headers.items()))
+    return [output]
+
+
+dispatch_table = {
+    'get': cgi_get,
+    }
+
+
+@middleware
+def cgi_dispatcher(environ, start_response, app):
+    url, options = cgi_parse_environ(environ)
+
+    for key in dispatch_table.keys():
+        if key in options:
+            return dispatch_table[key](environ, start_response)
+
+    return app(environ, start_response)
+
+
+@middleware
+def cgi_error_handler(environ, start_response, app):
+    try:
+        return app(environ, start_response)
+
+    except (KeyboardInterrupt, SystemExit):
+        raise
+
+    except Exception as e:
+        headers = {'status': '500 Oops', 'content-type': 'text/html'}
+        start_response(headers['status'], list(headers.items()), sys.exc_info())
+        log('ERROR: %s' % repr(e), force=True)
+        return [cgitb.html(sys.exc_info())]
+
+
+@middleware
+def cgi_encode(environ, start_response, app):
+    out = app(environ, start_response)
+    return [x if isinstance(x, bytes) else str(x).encode('utf-8') for x in out]
+
+
+application = cgi_app
+application = cgi_file_handler(application)
+application = cgi_dispatcher(application)
+application = cgi_error_handler(application)
+application = cgi_encode(application)

www/.htaccess

@@ -4,6 +4,12 @@ ErrorDocument 403 "Access forbidden"
 ErrorDocument 404 /cgi/main.py
 ErrorDocument 500 "A very nasty bug found his way onto this very server"
 
+# Uncomment below line to turn debug on for all requests
+#SetEnv DEBUG 1
+
+# Uncomment below line to turn debug on for requests with :debug in the url
+#SetEnvIf Request_URI :debug DEBUG 1
+
 <Files ~ "\.(py|pyc|db|log)$">
 	deny from all
 </Files>

www/sheet.xsl

@@ -18,12 +18,18 @@
 			<meta name="robots" content="noindex" />
 
 			<style type="text/css">
+				body * {
+					box-sizing:  border-box;
+				}
+
 				body {
 					overflow-wrap: anywhere;
 					word-wrap: anywhere;
 					word-break: break-word;
 
 					font-family: sans-serif;
+
+					-webkit-tap-highlight-color: transparent; /* safari work around */
 				}
 
 				input, select {
@@ -133,6 +139,10 @@
 					padding: 1%;
 				}
 
+				.item > *:empty {
+					display: none;
+				}
+
 				.item > :not(:last-child) {
 					border-bottom: 1px solid silver;
 				}
@@ -221,7 +231,7 @@
 			<div id="content">
 				<xsl:for-each select="rdf:RDF/rssfake:channel/rssfake:item|rss/channel/item|atom:feed/atom:entry|atom03:feed/atom03:entry">
 					<div class="item" dir="auto">
-						<a href="/" target="_blank"><xsl:attribute name="href"><xsl:value-of select="rssfake:link|link|atom:link/@href|atom03:link/@href"/></xsl:attribute>
+						<a target="_blank"><xsl:attribute name="href"><xsl:value-of select="rssfake:link|link|atom:link/@href|atom03:link/@href"/></xsl:attribute>
 								<xsl:value-of select="rssfake:title|title|atom:title|atom03:title"/>
 						</a>
 
@@ -242,7 +252,7 @@
 
 				if (!/:html/.test(window.location.href))
 					for (var content of document.querySelectorAll(".desc,.content"))
-						content.innerHTML = (content.innerText.match(/>/g) || []).length > 10 ? content.innerText : content.innerHTML
+						content.innerHTML = (content.innerText.match(/>/g) || []).length > 3 ? content.innerText : content.innerHTML
 
 				var options = parse_location()[0]