forked from indymedia/epicyon
693 lines
26 KiB
Python
693 lines
26 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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# Example hashtag logic:
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#
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# if moderated and not #imcoxford then block
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# if #pol and contains "westminster" then add #britpol
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# if #unwantedtag then block
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import os
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import time
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import datetime
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from shutil import rmtree
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from subprocess import Popen
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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 content import validHashTag
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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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from utils import clearFromPostCaches
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from inbox import storeHashTags
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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 hashtagRuleResolve(tree: [], hashtags: [], moderated: bool,
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content: str) -> bool:
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"""Returns whether the tree for a hashtag rule evaluates to true or false
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"""
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if not tree:
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return False
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if tree[0] == 'not':
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if len(tree) == 2:
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if isinstance(tree[1], str):
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return tree[1] not in hashtags
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elif isinstance(tree[1], list):
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return not hashtagRuleResolve(tree[1], hashtags, moderated,
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content)
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elif tree[0] == 'contains':
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if len(tree) == 2:
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if isinstance(tree[1], str):
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matchStr = tree[1]
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if matchStr.startswith('"') and matchStr.endswith('"'):
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matchStr = matchStr[1:]
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matchStr = matchStr[:len(matchStr) - 1]
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return matchStr.lower() in content
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elif isinstance(tree[1], list):
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matchStr = tree[1][0]
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if matchStr.startswith('"') and matchStr.endswith('"'):
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matchStr = matchStr[1:]
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matchStr = matchStr[:len(matchStr) - 1]
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return matchStr.lower() in content
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elif tree[0] == 'and':
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if len(tree) >= 3:
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for argIndex in range(1, len(tree)):
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argValue = False
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if isinstance(tree[argIndex], str):
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argValue = (tree[argIndex] in hashtags)
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elif isinstance(tree[argIndex], list):
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argValue = hashtagRuleResolve(tree[argIndex],
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hashtags, moderated,
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content)
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if not argValue:
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return False
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return True
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elif tree[0] == 'or':
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if len(tree) >= 3:
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for argIndex in range(1, len(tree)):
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argValue = False
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if isinstance(tree[argIndex], str):
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argValue = (tree[argIndex] in hashtags)
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elif isinstance(tree[argIndex], list):
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argValue = hashtagRuleResolve(tree[argIndex],
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hashtags, moderated,
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content)
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if argValue:
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return True
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return False
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elif tree[0].startswith('#') and len(tree) == 1:
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return tree[0] in hashtags
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elif tree[0].startswith('moderated'):
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return moderated
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elif tree[0].startswith('"') and tree[0].endswith('"'):
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return True
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return False
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def hashtagRuleTree(operators: [],
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conditionsStr: str,
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tagsInConditions: [],
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moderated: bool) -> []:
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"""Walks the tree
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"""
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if not operators and conditionsStr:
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conditionsStr = conditionsStr.strip()
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isStr = conditionsStr.startswith('"') and conditionsStr.endswith('"')
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if conditionsStr.startswith('#') or isStr or \
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conditionsStr in operators or \
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conditionsStr == 'moderated' or \
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conditionsStr == 'contains':
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if conditionsStr.startswith('#'):
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if conditionsStr not in tagsInConditions:
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if ' ' not in conditionsStr or \
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conditionsStr.startswith('"'):
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tagsInConditions.append(conditionsStr)
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return [conditionsStr.strip()]
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else:
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return None
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if not operators or not conditionsStr:
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return None
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tree = None
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conditionsStr = conditionsStr.strip()
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isStr = conditionsStr.startswith('"') and conditionsStr.endswith('"')
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if conditionsStr.startswith('#') or isStr or \
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conditionsStr in operators or \
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conditionsStr == 'moderated' or \
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conditionsStr == 'contains':
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if conditionsStr.startswith('#'):
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if conditionsStr not in tagsInConditions:
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if ' ' not in conditionsStr or \
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conditionsStr.startswith('"'):
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tagsInConditions.append(conditionsStr)
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tree = [conditionsStr.strip()]
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ctr = 0
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while ctr < len(operators):
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op = operators[ctr]
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opMatch = ' ' + op + ' '
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if opMatch not in conditionsStr and \
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not conditionsStr.startswith(op + ' '):
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ctr += 1
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continue
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else:
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tree = [op]
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if opMatch in conditionsStr:
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sections = conditionsStr.split(opMatch)
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else:
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sections = conditionsStr.split(op + ' ', 1)
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for subConditionStr in sections:
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result = hashtagRuleTree(operators[ctr + 1:],
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subConditionStr,
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tagsInConditions, moderated)
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if result:
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tree.append(result)
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break
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return tree
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def newswireHashtagProcessing(session, baseDir: str, postJsonObject: {},
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hashtags: [], 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: [],
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moderated: bool) -> 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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rulesFilename = baseDir + '/accounts/hashtagrules.txt'
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if not os.path.isfile(rulesFilename):
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return True
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rules = []
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with open(rulesFilename, "r") as f:
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rules = f.readlines()
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domainFull = domain
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if port:
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if port != 80 and port != 443:
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domainFull = domain + ':' + str(port)
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# get the full text content of the post
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content = ''
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if postJsonObject['object'].get('content'):
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content += postJsonObject['object']['content']
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if postJsonObject['object'].get('summary'):
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content += ' ' + postJsonObject['object']['summary']
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content = content.lower()
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# actionOccurred = False
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operators = ('not', 'and', 'or', 'contains')
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for ruleStr in rules:
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if not ruleStr:
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continue
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if not ruleStr.startswith('if '):
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continue
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if ' then ' not in ruleStr:
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continue
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conditionsStr = ruleStr.split('if ', 1)[1]
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conditionsStr = conditionsStr.split(' then ')[0]
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tagsInConditions = []
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tree = hashtagRuleTree(operators, conditionsStr,
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tagsInConditions, moderated)
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if not hashtagRuleResolve(tree, hashtags, moderated, content):
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continue
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# the condition matches, so do something
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actionStr = ruleStr.split(' then ')[1].strip()
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# add a hashtag
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if actionStr.startswith('add '):
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addHashtag = actionStr.split('add ', 1)[1].strip()
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if addHashtag.startswith('#'):
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if addHashtag not in hashtags:
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hashtags.append(addHashtag)
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htId = addHashtag.replace('#', '')
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if validHashTag(htId):
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hashtagUrl = \
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httpPrefix + "://" + domainFull + "/tags/" + htId
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newTag = {
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'href': hashtagUrl,
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'name': addHashtag,
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'type': 'Hashtag'
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}
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# does the tag already exist?
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addTagObject = None
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for t in postJsonObject['object']['tag']:
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if t.get('type') and t.get('name'):
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if t['type'] == 'Hashtag' and \
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t['name'] == addHashtag:
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addTagObject = t
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break
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# append the tag if it wasn't found
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if not addTagObject:
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postJsonObject['object']['tag'].append(newTag)
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# add corresponding html to the post content
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hashtagHtml = \
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" <a href=\"" + hashtagUrl + \
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"\" class=\"mention hashtag\" " + \
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"rel=\"tag\">#<span>" + \
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htId + "</span></a>"
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content = postJsonObject['object']['content']
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if hashtagHtml not in content:
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if content.endswith('</p>'):
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content = \
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content[:len(content) - len('</p>')] + \
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hashtagHtml + '</p>'
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else:
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content += hashtagHtml
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postJsonObject['object']['content'] = content
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storeHashTags(baseDir, 'news', postJsonObject)
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# actionOccurred = True
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# remove a hashtag
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if actionStr.startswith('remove '):
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rmHashtag = actionStr.split('remove ', 1)[1].strip()
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if rmHashtag.startswith('#'):
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if rmHashtag in hashtags:
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hashtags.remove(rmHashtag)
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htId = rmHashtag.replace('#', '')
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hashtagUrl = \
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httpPrefix + "://" + domainFull + "/tags/" + htId
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# remove tag html from the post content
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hashtagHtml = \
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"<a href=\"" + hashtagUrl + \
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"\" class=\"mention hashtag\" " + \
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"rel=\"tag\">#<span>" + \
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htId + "</span></a>"
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content = postJsonObject['object']['content']
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if hashtagHtml in content:
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content = \
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content.replace(hashtagHtml, '').replace(' ', ' ')
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postJsonObject['object']['content'] = content
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rmTagObject = None
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for t in postJsonObject['object']['tag']:
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if t.get('type') and t.get('name'):
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if t['type'] == 'Hashtag' and \
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t['name'] == rmHashtag:
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rmTagObject = t
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break
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if rmTagObject:
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postJsonObject['object']['tag'].remove(rmTagObject)
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# actionOccurred = True
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# Block this item
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if actionStr.startswith('block') or actionStr.startswith('drop'):
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return False
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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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# if actionOccurred:
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# return True
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return True
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def createNewsMirror(baseDir: str, postIdNumber: str, url: str,
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maxMirroredArticles: int) -> bool:
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"""Creates a local mirror of a news article
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"""
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if '|' in url or '>' in url:
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return True
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mirrorDir = baseDir + '/accounts/newsmirror'
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if not os.path.isdir(mirrorDir):
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os.mkdir(mirrorDir)
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# count the directories
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noOfDirs = 0
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for subdir, dirs, files in os.walk(mirrorDir):
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noOfDirs = len(dirs)
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mirrorIndexFilename = baseDir + '/accounts/newsmirror.txt'
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if maxMirroredArticles > 0 and noOfDirs > maxMirroredArticles:
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if not os.path.isfile(mirrorIndexFilename):
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# no index for mirrors found
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return True
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removals = []
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with open(mirrorIndexFilename, 'r') as indexFile:
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# remove the oldest directories
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ctr = 0
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while noOfDirs > maxMirroredArticles:
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ctr += 1
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if ctr > 5000:
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# escape valve
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break
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postId = indexFile.readline()
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if not postId:
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continue
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postId = postId.strip()
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mirrorArticleDir = mirrorDir + '/' + postId
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if os.path.isdir(mirrorArticleDir):
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rmtree(mirrorArticleDir)
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removals.append(postId)
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noOfDirs -= 1
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# remove the corresponding index entries
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if removals:
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indexContent = ''
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with open(mirrorIndexFilename, 'r') as indexFile:
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indexContent = indexFile.read()
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for removePostId in removals:
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indexContent = \
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indexContent.replace(removePostId + '\n', '')
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with open(mirrorIndexFilename, "w+") as indexFile:
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indexFile.write(indexContent)
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mirrorArticleDir = mirrorDir + '/' + postIdNumber
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if os.path.isdir(mirrorArticleDir):
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# already mirrored
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return True
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# download the files
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commandStr = \
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'/usr/bin/wget -mkEpnp -e robots=off ' + url + \
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' -P ' + mirrorArticleDir
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p = Popen(commandStr, shell=True)
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os.waitpid(p.pid, 0)
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if not os.path.isdir(mirrorArticleDir):
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return True
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# append the post Id number to the index file
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if os.path.isfile(mirrorIndexFilename):
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indexFile = open(mirrorIndexFilename, "a+")
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if indexFile:
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indexFile.write(postIdNumber + '\n')
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indexFile.close()
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else:
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indexFile = open(mirrorIndexFilename, "w+")
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if indexFile:
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indexFile.write(postIdNumber + '\n')
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indexFile.close()
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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: [],
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maxMirroredArticles: int) -> 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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mirrored = item[7]
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postUrl = url
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if mirrored and '://' in url:
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postUrl = '/newsmirror/' + url.split('://')[1]
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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="' + postUrl + '">' + \
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translate['Read more...'] + '</a>'
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else:
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rssDescription = \
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'<a href="' + postUrl + '">' + \
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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,
|
|
None, None, None, useBlurhash,
|
|
rssTitle)
|
|
if not blog:
|
|
continue
|
|
|
|
if mirrored:
|
|
if not createNewsMirror(baseDir, statusNumber,
|
|
url, maxMirroredArticles):
|
|
continue
|
|
|
|
idStr = \
|
|
httpPrefix + '://' + domain + '/users/news' + \
|
|
'/statuses/' + statusNumber + '/replies'
|
|
blog['news'] = True
|
|
|
|
# note the time of arrival
|
|
currTime = datetime.datetime.utcnow()
|
|
blog['object']['arrived'] = currTime.strftime("%Y-%m-%dT%H:%M:%SZ")
|
|
|
|
# change the id, based upon the published time
|
|
blog['object']['replies']['id'] = idStr
|
|
blog['object']['replies']['first']['partOf'] = idStr
|
|
|
|
blog['id'] = newPostId + '/activity'
|
|
blog['object']['id'] = newPostId
|
|
blog['object']['atomUri'] = newPostId
|
|
blog['object']['url'] = \
|
|
httpPrefix + '://' + domain + '/@news/' + statusNumber
|
|
blog['object']['published'] = dateStr
|
|
|
|
domainFull = domain
|
|
if port:
|
|
if port != 80 and port != 443:
|
|
domainFull = domain + ':' + str(port)
|
|
|
|
hashtags = item[6]
|
|
for tagName in hashtags:
|
|
htId = tagName.replace('#', '')
|
|
hashtagUrl = \
|
|
httpPrefix + "://" + domainFull + "/tags/" + htId
|
|
newTag = {
|
|
'href': hashtagUrl,
|
|
'name': tagName,
|
|
'type': 'Hashtag'
|
|
}
|
|
blog['object']['tag'].append(newTag)
|
|
if tagName in blog['object']['content']:
|
|
hashtagHtml = \
|
|
"<a href=\"" + hashtagUrl + \
|
|
"\" class=\"mention hashtag\" " + \
|
|
"rel=\"tag\">#<span>" + \
|
|
htId + "</span></a>"
|
|
blog['object']['content'].replace(tagName, hashtagHtml)
|
|
|
|
postId = newPostId.replace('/', '#')
|
|
|
|
moderated = item[5]
|
|
|
|
savePost = newswireHashtagProcessing(session, baseDir, blog, hashtags,
|
|
httpPrefix, domain, port,
|
|
personCache, cachedWebfingers,
|
|
federationList,
|
|
sendThreads, postLog, moderated)
|
|
|
|
# save the post and update the index
|
|
if savePost:
|
|
newswire[originalDateStr][6] = hashtags
|
|
|
|
storeHashTags(baseDir, 'news', blog)
|
|
|
|
clearFromPostCaches(baseDir, recentPostsCache, postId)
|
|
if saveJson(blog, filename):
|
|
updateFeedsOutboxIndex(baseDir, domain, postId + '.json')
|
|
|
|
# Save a file containing the time when the post arrived
|
|
# this can then later be used to construct the news timeline
|
|
# excluding items during the voting period
|
|
if moderated:
|
|
saveArrivedTime(baseDir, filename,
|
|
blog['object']['arrived'])
|
|
else:
|
|
if os.path.isfile(filename + '.arrived'):
|
|
os.remove(filename + '.arrived')
|
|
|
|
# set the url
|
|
newswire[originalDateStr][1] = \
|
|
'/users/news/statuses/' + statusNumber
|
|
# set the filename
|
|
newswire[originalDateStr][3] = filename
|
|
|
|
|
|
def mergeWithPreviousNewswire(oldNewswire: {}, newNewswire: {}) -> None:
|
|
"""Preserve any votes or generated activitypub post filename
|
|
as rss feeds are updated
|
|
"""
|
|
for published, fields in oldNewswire.items():
|
|
if not newNewswire.get(published):
|
|
continue
|
|
for i in range(1, 5):
|
|
newNewswire[published][i] = fields[i]
|
|
|
|
|
|
def runNewswireDaemon(baseDir: str, httpd,
|
|
httpPrefix: str, domain: str, port: int,
|
|
translate: {}) -> None:
|
|
"""Periodically updates RSS feeds
|
|
"""
|
|
newswireStateFilename = baseDir + '/accounts/.newswirestate.json'
|
|
|
|
# initial sleep to allow the system to start up
|
|
time.sleep(50)
|
|
while True:
|
|
# has the session been created yet?
|
|
if not httpd.session:
|
|
print('Newswire daemon waiting for session')
|
|
time.sleep(60)
|
|
continue
|
|
|
|
# try to update the feeds
|
|
newNewswire = None
|
|
try:
|
|
newNewswire = \
|
|
getDictFromNewswire(httpd.session, baseDir, domain,
|
|
httpd.maxNewswirePostsPerSource,
|
|
httpd.maxNewswireFeedSizeKb)
|
|
except Exception as e:
|
|
print('WARN: unable to update newswire ' + str(e))
|
|
time.sleep(120)
|
|
continue
|
|
|
|
if not httpd.newswire:
|
|
if os.path.isfile(newswireStateFilename):
|
|
httpd.newswire = loadJson(newswireStateFilename)
|
|
|
|
mergeWithPreviousNewswire(httpd.newswire, newNewswire)
|
|
|
|
httpd.newswire = newNewswire
|
|
saveJson(httpd.newswire, newswireStateFilename)
|
|
print('Newswire updated')
|
|
|
|
convertRSStoActivityPub(baseDir,
|
|
httpPrefix, domain, port,
|
|
newNewswire, translate,
|
|
httpd.recentPostsCache,
|
|
httpd.maxRecentPosts,
|
|
httpd.session,
|
|
httpd.cachedWebfingers,
|
|
httpd.personCache,
|
|
httpd.federationList,
|
|
httpd.sendThreads,
|
|
httpd.postLog,
|
|
httpd.maxMirroredArticles)
|
|
print('Newswire feed converted to ActivityPub')
|
|
|
|
# wait a while before the next feeds update
|
|
time.sleep(1200)
|
|
|
|
|
|
def runNewswireWatchdog(projectVersion: str, httpd) -> None:
|
|
"""This tries to keep the newswire update thread running even if it dies
|
|
"""
|
|
print('Starting newswire watchdog')
|
|
newswireOriginal = \
|
|
httpd.thrPostSchedule.clone(runNewswireDaemon)
|
|
httpd.thrNewswireDaemon.start()
|
|
while True:
|
|
time.sleep(50)
|
|
if not httpd.thrNewswireDaemon.isAlive():
|
|
httpd.thrNewswireDaemon.kill()
|
|
httpd.thrNewswireDaemon = \
|
|
newswireOriginal.clone(runNewswireDaemon)
|
|
httpd.thrNewswireDaemon.start()
|
|
print('Restarting newswire daemon...')
|