forked from indymedia/epicyon
314 lines
12 KiB
Python
314 lines
12 KiB
Python
__filename__ = "newsdaemon.py"
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__author__ = "Bob Mottram"
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__license__ = "AGPL3+"
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__version__ = "1.1.0"
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__maintainer__ = "Bob Mottram"
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__email__ = "bob@freedombone.net"
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__status__ = "Production"
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import os
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import time
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import datetime
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from collections import OrderedDict
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from newswire import getDictFromNewswire
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# from posts import sendSignedJson
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from posts import createNewsPost
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from content import removeHtmlTag
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from content import dangerousMarkup
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from utils import loadJson
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from utils import saveJson
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from utils import getStatusNumber
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def updateFeedsOutboxIndex(baseDir: str, domain: str, postId: str) -> None:
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"""Updates the index used for imported RSS feeds
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"""
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basePath = baseDir + '/accounts/news@' + domain
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indexFilename = basePath + '/outbox.index'
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if os.path.isfile(indexFilename):
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if postId not in open(indexFilename).read():
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try:
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with open(indexFilename, 'r+') as feedsFile:
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content = feedsFile.read()
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feedsFile.seek(0, 0)
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feedsFile.write(postId + '\n' + content)
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print('DEBUG: feeds post added to index')
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except Exception as e:
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print('WARN: Failed to write entry to feeds posts index ' +
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indexFilename + ' ' + str(e))
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else:
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feedsFile = open(indexFilename, 'w+')
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if feedsFile:
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feedsFile.write(postId + '\n')
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feedsFile.close()
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def saveArrivedTime(baseDir: str, postFilename: str, arrived: str) -> None:
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"""Saves the time when an rss post arrived to a file
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"""
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arrivedFile = open(postFilename + '.arrived', 'w+')
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if arrivedFile:
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arrivedFile.write(arrived)
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arrivedFile.close()
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def removeControlCharacters(content: str) -> str:
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"""TODO this is hacky and a better solution is needed
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the unicode is messing up somehow
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"""
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lookups = {
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"8211": "-",
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"8230": "...",
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"8216": "'",
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"8217": "'",
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"8220": '"',
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"8221": '"'
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}
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for code, ch in lookups.items():
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content = content.replace('&' + code + ';', ch)
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content = content.replace('&#' + code + ';', ch)
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return content
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def newswireHashtagProcessing(session, baseDir: str, postJsonObject: {},
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hashtags: str, httpPrefix: str,
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domain: str, port: int,
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personCache: {},
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cachedWebfingers: {},
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federationList: [],
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sendThreads: [], postLog: []) -> bool:
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"""Applies hashtag rules to a news post.
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Returns true if the post should be saved to the news timeline
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of this instance
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"""
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# TODO
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# If routing to another instance
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# sendSignedJson(postJsonObject: {}, session, baseDir: str,
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# nickname: str, domain: str, port: int,
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# toNickname: str, toDomain: str, toPort: int, cc: str,
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# httpPrefix: str, False, False,
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# federationList: [],
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# sendThreads: [], postLog: [], cachedWebfingers: {},
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# personCache: {}, False, __version__) -> int:
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return True
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def convertRSStoActivityPub(baseDir: str, httpPrefix: str,
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domain: str, port: int,
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newswire: {},
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translate: {},
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recentPostsCache: {}, maxRecentPosts: int,
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session, cachedWebfingers: {},
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personCache: {},
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federationList: [],
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sendThreads: [], postLog: []) -> None:
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"""Converts rss items in a newswire into posts
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"""
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basePath = baseDir + '/accounts/news@' + domain + '/outbox'
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if not os.path.isdir(basePath):
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os.mkdir(basePath)
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# oldest items first
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newswireReverse = \
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OrderedDict(sorted(newswire.items(), reverse=False))
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for dateStr, item in newswireReverse.items():
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originalDateStr = dateStr
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# convert the date to the format used by ActivityPub
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dateStr = dateStr.replace(' ', 'T')
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dateStr = dateStr.replace('+00:00', 'Z')
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statusNumber, published = getStatusNumber(dateStr)
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newPostId = \
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httpPrefix + '://' + domain + \
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'/users/news/statuses/' + statusNumber
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# file where the post is stored
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filename = basePath + '/' + newPostId.replace('/', '#') + '.json'
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if os.path.isfile(filename):
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# don't create the post if it already exists
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# set the url
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newswire[originalDateStr][1] = \
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'/users/news/statuses/' + statusNumber
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# set the filename
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newswire[originalDateStr][3] = filename
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continue
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rssTitle = removeControlCharacters(item[0])
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url = item[1]
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if dangerousMarkup(url) or dangerousMarkup(rssTitle):
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continue
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rssDescription = ''
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# get the rss description if it exists
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rssDescription = removeControlCharacters(item[4])
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if rssDescription.startswith('<![CDATA['):
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rssDescription = rssDescription.replace('<![CDATA[', '')
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rssDescription = rssDescription.replace(']]>', '')
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rssDescription = '<p>' + rssDescription + '<p>'
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# add the off-site link to the description
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if rssDescription and not dangerousMarkup(rssDescription):
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rssDescription += \
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'<br><a href="' + url + '">' + \
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translate['Read more...'] + '</a>'
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else:
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rssDescription = \
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'<a href="' + url + '">' + \
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translate['Read more...'] + '</a>'
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# remove image dimensions
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if '<img' in rssDescription:
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rssDescription = removeHtmlTag(rssDescription, 'width')
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rssDescription = removeHtmlTag(rssDescription, 'height')
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followersOnly = False
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useBlurhash = False
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# NOTE: the id when the post is created will not be
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# consistent (it's based on the current time, not the
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# published time), so we change that later
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blog = createNewsPost(baseDir,
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domain, port, httpPrefix,
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rssDescription,
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followersOnly, False,
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None, None, None, useBlurhash,
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rssTitle)
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if not blog:
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continue
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idStr = \
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httpPrefix + '://' + domain + '/users/news' + \
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'/statuses/' + statusNumber + '/replies'
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blog['news'] = True
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# note the time of arrival
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currTime = datetime.datetime.utcnow()
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blog['object']['arrived'] = currTime.strftime("%Y-%m-%dT%H:%M:%SZ")
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# change the id, based upon the published time
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blog['object']['replies']['id'] = idStr
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blog['object']['replies']['first']['partOf'] = idStr
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blog['id'] = newPostId + '/activity'
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blog['object']['id'] = newPostId
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blog['object']['atomUri'] = newPostId
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blog['object']['url'] = \
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httpPrefix + '://' + domain + '/@news/' + statusNumber
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blog['object']['published'] = dateStr
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postId = newPostId.replace('/', '#')
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moderated = item[5]
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hashtags = item[6]
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savePost = newswireHashtagProcessing(session, baseDir, blog, hashtags,
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httpPrefix, domain, port,
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personCache, cachedWebfingers,
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federationList,
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sendThreads, postLog)
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# save the post and update the index
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if savePost:
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if saveJson(blog, filename):
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updateFeedsOutboxIndex(baseDir, domain, postId + '.json')
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# Save a file containing the time when the post arrived
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# this can then later be used to construct the news timeline
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# excluding items during the voting period
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if moderated:
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saveArrivedTime(baseDir, filename,
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blog['object']['arrived'])
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else:
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if os.path.isfile(filename + '.arrived'):
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os.remove(filename + '.arrived')
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# set the url
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newswire[originalDateStr][1] = \
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'/users/news/statuses/' + statusNumber
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# set the filename
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newswire[originalDateStr][3] = filename
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def mergeWithPreviousNewswire(oldNewswire: {}, newNewswire: {}) -> None:
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"""Preserve any votes or generated activitypub post filename
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as rss feeds are updated
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"""
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for published, fields in oldNewswire.items():
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if not newNewswire.get(published):
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continue
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for i in range(1, 5):
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newNewswire[published][i] = fields[i]
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def runNewswireDaemon(baseDir: str, httpd,
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httpPrefix: str, domain: str, port: int,
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translate: {}) -> None:
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"""Periodically updates RSS feeds
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"""
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newswireStateFilename = baseDir + '/accounts/.newswirestate.json'
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# initial sleep to allow the system to start up
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time.sleep(50)
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while True:
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# has the session been created yet?
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if not httpd.session:
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print('Newswire daemon waiting for session')
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time.sleep(60)
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continue
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# try to update the feeds
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newNewswire = None
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try:
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newNewswire = \
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getDictFromNewswire(httpd.session, baseDir,
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httpd.maxNewswirePostsPerSource,
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httpd.maxNewswireFeedSizeKb)
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except Exception as e:
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print('WARN: unable to update newswire ' + str(e))
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time.sleep(120)
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continue
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if not httpd.newswire:
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if os.path.isfile(newswireStateFilename):
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httpd.newswire = loadJson(newswireStateFilename)
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mergeWithPreviousNewswire(httpd.newswire, newNewswire)
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httpd.newswire = newNewswire
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saveJson(httpd.newswire, newswireStateFilename)
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print('Newswire updated')
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convertRSStoActivityPub(baseDir,
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httpPrefix, domain, port,
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newNewswire, translate,
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httpd.recentPostsCache,
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httpd.maxRecentPosts,
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httpd.session,
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httpd.cachedWebfingers,
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httpd.personCache,
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httpd.federationList,
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httpd.sendThreads,
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httpd.postLog)
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print('Newswire feed converted to ActivityPub')
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# wait a while before the next feeds update
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time.sleep(1200)
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def runNewswireWatchdog(projectVersion: str, httpd) -> None:
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"""This tries to keep the newswire update thread running even if it dies
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"""
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print('Starting newswire watchdog')
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newswireOriginal = \
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httpd.thrPostSchedule.clone(runNewswireDaemon)
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httpd.thrNewswireDaemon.start()
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while True:
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time.sleep(50)
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if not httpd.thrNewswireDaemon.isAlive():
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httpd.thrNewswireDaemon.kill()
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httpd.thrNewswireDaemon = \
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newswireOriginal.clone(runNewswireDaemon)
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httpd.thrNewswireDaemon.start()
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print('Restarting newswire daemon...')
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