mirror of https://gitlab.com/bashrc2/epicyon
1309 lines
47 KiB
Python
1309 lines
47 KiB
Python
__filename__ = "content.py"
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__author__ = "Bob Mottram"
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__license__ = "AGPL3+"
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__version__ = "1.2.0"
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__maintainer__ = "Bob Mottram"
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__email__ = "bob@libreserver.org"
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__status__ = "Production"
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__module_group__ = "Core"
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import os
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import email.parser
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import urllib.parse
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from shutil import copyfile
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from utils import dangerousSVG
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from utils import removeDomainPort
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from utils import isValidLanguage
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from utils import getImageExtensions
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from utils import loadJson
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from utils import saveJson
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from utils import fileLastModified
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from utils import getLinkPrefixes
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from utils import dangerousMarkup
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from utils import isPGPEncrypted
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from utils import containsPGPPublicKey
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from utils import acctDir
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from utils import isfloat
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from utils import getCurrencies
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from utils import removeHtml
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from petnames import getPetName
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from session import downloadImage
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def removeHtmlTag(htmlStr: str, tag: str) -> str:
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"""Removes a given tag from a html string
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"""
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tagFound = True
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while tagFound:
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matchStr = ' ' + tag + '="'
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if matchStr not in htmlStr:
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tagFound = False
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break
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sections = htmlStr.split(matchStr, 1)
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if '"' not in sections[1]:
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tagFound = False
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break
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htmlStr = sections[0] + sections[1].split('"', 1)[1]
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return htmlStr
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def _removeQuotesWithinQuotes(content: str) -> str:
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"""Removes any blockquote inside blockquote
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"""
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if '<blockquote>' not in content:
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return content
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if '</blockquote>' not in content:
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return content
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ctr = 1
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found = True
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while found:
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prefix = content.split('<blockquote>', ctr)[0] + '<blockquote>'
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quotedStr = content.split('<blockquote>', ctr)[1]
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if '</blockquote>' not in quotedStr:
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found = False
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else:
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endStr = quotedStr.split('</blockquote>')[1]
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quotedStr = quotedStr.split('</blockquote>')[0]
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if '<blockquote>' not in endStr:
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found = False
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if '<blockquote>' in quotedStr:
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quotedStr = quotedStr.replace('<blockquote>', '')
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content = prefix + quotedStr + '</blockquote>' + endStr
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ctr += 1
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return content
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def htmlReplaceEmailQuote(content: str) -> str:
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"""Replaces an email style quote "> Some quote" with html blockquote
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"""
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if isPGPEncrypted(content) or containsPGPPublicKey(content):
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return content
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# replace quote paragraph
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if '<p>"' in content:
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if '"</p>' in content:
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if content.count('<p>"') == content.count('"</p>'):
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content = content.replace('<p>"', '<p><blockquote>')
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content = content.replace('"</p>', '</blockquote></p>')
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if '>\u201c' in content:
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if '\u201d<' in content:
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if content.count('>\u201c') == content.count('\u201d<'):
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content = content.replace('>\u201c', '><blockquote>')
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content = content.replace('\u201d<', '</blockquote><')
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# replace email style quote
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if '>> ' not in content:
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return content
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contentStr = content.replace('<p>', '')
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contentLines = contentStr.split('</p>')
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newContent = ''
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for lineStr in contentLines:
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if not lineStr:
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continue
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if '>> ' not in lineStr:
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if lineStr.startswith('> '):
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lineStr = lineStr.replace('> ', '<blockquote>')
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lineStr = lineStr.replace('>', '<br>')
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newContent += '<p>' + lineStr + '</blockquote></p>'
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else:
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newContent += '<p>' + lineStr + '</p>'
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else:
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lineStr = lineStr.replace('>> ', '><blockquote>')
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if lineStr.startswith('>'):
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lineStr = lineStr.replace('>', '<blockquote>', 1)
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else:
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lineStr = lineStr.replace('>', '<br>')
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newContent += '<p>' + lineStr + '</blockquote></p>'
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return _removeQuotesWithinQuotes(newContent)
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def htmlReplaceQuoteMarks(content: str) -> str:
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"""Replaces quotes with html formatting
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"hello" becomes <q>hello</q>
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"""
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if isPGPEncrypted(content) or containsPGPPublicKey(content):
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return content
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if '"' not in content:
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if '"' not in content:
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return content
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# only if there are a few quote marks
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if content.count('"') > 4:
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return content
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if content.count('"') > 4:
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return content
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newContent = content
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if '"' in content:
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sections = content.split('"')
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if len(sections) > 1:
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newContent = ''
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openQuote = True
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markup = False
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for ch in content:
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currChar = ch
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if ch == '<':
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markup = True
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elif ch == '>':
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markup = False
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elif ch == '"' and not markup:
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if openQuote:
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currChar = '“'
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else:
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currChar = '”'
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openQuote = not openQuote
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newContent += currChar
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if '"' in newContent:
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openQuote = True
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content = newContent
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newContent = ''
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ctr = 0
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sections = content.split('"')
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noOfSections = len(sections)
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for s in sections:
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newContent += s
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if ctr < noOfSections - 1:
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if openQuote:
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newContent += '“'
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else:
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newContent += '”'
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openQuote = not openQuote
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ctr += 1
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return newContent
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def dangerousCSS(filename: str, allowLocalNetworkAccess: bool) -> bool:
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"""Returns true is the css file contains code which
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can create security problems
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"""
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if not os.path.isfile(filename):
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return False
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content = None
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try:
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with open(filename, 'r') as fp:
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content = fp.read().lower()
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except OSError:
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print('EX: unable to read css file ' + filename)
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if content:
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cssMatches = ('behavior:', ':expression', '?php', '.php',
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'google', 'regexp', 'localhost',
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'127.0.', '192.168', '10.0.', '@import')
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for cssmatch in cssMatches:
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if cssmatch in content:
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return True
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# search for non-local web links
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if 'url(' in content:
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urlList = content.split('url(')
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ctr = 0
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for urlStr in urlList:
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if ctr > 0:
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if ')' in urlStr:
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urlStr = urlStr.split(')')[0]
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if 'http' in urlStr:
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print('ERROR: non-local web link in CSS ' +
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filename)
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return True
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ctr += 1
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# an attacker can include html inside of the css
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# file as a comment and this may then be run from the html
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if dangerousMarkup(content, allowLocalNetworkAccess):
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return True
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return False
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def switchWords(baseDir: str, nickname: str, domain: str, content: str,
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rules: [] = []) -> str:
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"""Performs word replacements. eg. Trump -> The Orange Menace
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"""
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if isPGPEncrypted(content) or containsPGPPublicKey(content):
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return content
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if not rules:
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switchWordsFilename = \
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acctDir(baseDir, nickname, domain) + '/replacewords.txt'
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if not os.path.isfile(switchWordsFilename):
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return content
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try:
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with open(switchWordsFilename, 'r') as fp:
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rules = fp.readlines()
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except OSError:
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print('EX: unable to read switches ' + switchWordsFilename)
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for line in rules:
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replaceStr = line.replace('\n', '').replace('\r', '')
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splitters = ('->', ':', ',', ';', '-')
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wordTransform = None
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for splitStr in splitters:
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if splitStr in replaceStr:
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wordTransform = replaceStr.split(splitStr)
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break
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if not wordTransform:
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continue
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if len(wordTransform) == 2:
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replaceStr1 = wordTransform[0].strip().replace('"', '')
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replaceStr2 = wordTransform[1].strip().replace('"', '')
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content = content.replace(replaceStr1, replaceStr2)
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return content
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def _saveCustomEmoji(session, baseDir: str, emojiName: str, url: str,
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debug: bool) -> None:
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"""Saves custom emoji to file
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"""
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if not session:
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if debug:
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print('EX: _saveCustomEmoji no session')
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return
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if '.' not in url:
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return
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ext = url.split('.')[-1]
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if ext != 'png':
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if debug:
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print('EX: Custom emoji is wrong format ' + url)
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return
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emojiName = emojiName.replace(':', '').strip().lower()
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customEmojiDir = baseDir + '/emojicustom'
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if not os.path.isdir(customEmojiDir):
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os.mkdir(customEmojiDir)
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emojiImageFilename = customEmojiDir + '/' + emojiName + '.' + ext
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if not downloadImage(session, baseDir, url,
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emojiImageFilename, debug, False):
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if debug:
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print('EX: custom emoji not downloaded ' + url)
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return
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emojiJsonFilename = customEmojiDir + '/emoji.json'
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emojiJson = {}
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if os.path.isfile(emojiJsonFilename):
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emojiJson = loadJson(emojiJsonFilename, 0, 1)
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if not emojiJson:
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emojiJson = {}
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if not emojiJson.get(emojiName):
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emojiJson[emojiName] = emojiName
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saveJson(emojiJson, emojiJsonFilename)
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if debug:
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print('EX: Saved custom emoji ' + emojiJsonFilename)
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elif debug:
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print('EX: cusom emoji already saved')
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def replaceEmojiFromTags(session, baseDir: str,
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content: str, tag: [], messageType: str,
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debug: bool) -> str:
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"""Uses the tags to replace :emoji: with html image markup
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"""
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for tagItem in tag:
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if not tagItem.get('type'):
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continue
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if tagItem['type'] != 'Emoji':
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continue
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if not tagItem.get('name'):
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continue
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if not tagItem.get('icon'):
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continue
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if not tagItem['icon'].get('url'):
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continue
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if '/' not in tagItem['icon']['url']:
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continue
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if tagItem['name'] not in content:
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continue
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iconName = tagItem['icon']['url'].split('/')[-1]
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if iconName:
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if len(iconName) > 1:
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if iconName[0].isdigit():
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if '.' in iconName:
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iconName = iconName.split('.')[0]
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# see https://unicode.org/
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# emoji/charts/full-emoji-list.html
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if '-' not in iconName:
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# a single code
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replaced = False
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try:
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replaceChar = chr(int("0x" + iconName, 16))
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content = content.replace(tagItem['name'],
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replaceChar)
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replaced = True
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except BaseException:
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print('EX: replaceEmojiFromTags 1 ' +
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'no conversion of ' +
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str(iconName) + ' to chr ' +
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tagItem['name'] + ' ' +
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tagItem['icon']['url'])
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if not replaced:
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_saveCustomEmoji(session, baseDir,
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tagItem['name'],
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tagItem['icon']['url'],
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debug)
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else:
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# sequence of codes
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iconCodes = iconName.split('-')
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iconCodeSequence = ''
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for icode in iconCodes:
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replaced = False
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try:
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iconCodeSequence += chr(int("0x" +
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icode, 16))
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replaced = True
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except BaseException:
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iconCodeSequence = ''
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print('EX: replaceEmojiFromTags 2 ' +
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'no conversion of ' +
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str(icode) + ' to chr ' +
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tagItem['name'] + ' ' +
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tagItem['icon']['url'])
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if not replaced:
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_saveCustomEmoji(session, baseDir,
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tagItem['name'],
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tagItem['icon']['url'],
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debug)
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if iconCodeSequence:
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content = content.replace(tagItem['name'],
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iconCodeSequence)
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htmlClass = 'emoji'
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if messageType == 'post header':
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htmlClass = 'emojiheader'
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if messageType == 'profile':
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htmlClass = 'emojiprofile'
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emojiHtml = "<img src=\"" + tagItem['icon']['url'] + "\" alt=\"" + \
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tagItem['name'].replace(':', '') + \
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"\" align=\"middle\" class=\"" + htmlClass + "\"/>"
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content = content.replace(tagItem['name'], emojiHtml)
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return content
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def _addMusicTag(content: str, tag: str) -> str:
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"""If a music link is found then ensure that the post is
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tagged appropriately
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"""
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if '#podcast' in content or '#documentary' in content:
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return content
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if '#' not in tag:
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tag = '#' + tag
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if tag in content:
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return content
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musicSites = ('soundcloud.com', 'bandcamp.com')
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musicSiteFound = False
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for site in musicSites:
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if site + '/' in content:
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musicSiteFound = True
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break
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if not musicSiteFound:
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return content
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return ':music: ' + content + ' ' + tag + ' '
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def addWebLinks(content: str) -> str:
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"""Adds markup for web links
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"""
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if ':' not in content:
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return content
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prefixes = getLinkPrefixes()
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# do any of these prefixes exist within the content?
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prefixFound = False
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for prefix in prefixes:
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if prefix in content:
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prefixFound = True
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break
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# if there are no prefixes then just keep the content we have
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if not prefixFound:
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return content
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maxLinkLength = 40
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content = content.replace('\r', '')
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words = content.replace('\n', ' --linebreak-- ').split(' ')
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replaceDict = {}
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for w in words:
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if ':' not in w:
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continue
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# does the word begin with a prefix?
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prefixFound = False
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for prefix in prefixes:
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if w.startswith(prefix):
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prefixFound = True
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break
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if not prefixFound:
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continue
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# the word contains a prefix
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if w.endswith('.') or w.endswith(';'):
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w = w[:-1]
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markup = '<a href="' + w + \
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'" rel="nofollow noopener noreferrer" target="_blank">'
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for prefix in prefixes:
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if w.startswith(prefix):
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markup += '<span class="invisible">' + prefix + '</span>'
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break
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linkText = w
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for prefix in prefixes:
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linkText = linkText.replace(prefix, '')
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# prevent links from becoming too long
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if len(linkText) > maxLinkLength:
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markup += '<span class="ellipsis">' + \
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linkText[:maxLinkLength] + '</span>'
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markup += '<span class="invisible">' + \
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linkText[maxLinkLength:] + '</span></a>'
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else:
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markup += '<span class="ellipsis">' + linkText + '</span></a>'
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replaceDict[w] = markup
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# do the replacements
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for url, markup in replaceDict.items():
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content = content.replace(url, markup)
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# replace any line breaks
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content = content.replace(' --linebreak-- ', '<br>')
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return content
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|
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def validHashTag(hashtag: str) -> bool:
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"""Returns true if the give hashtag contains valid characters
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"""
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# long hashtags are not valid
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if len(hashtag) >= 32:
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return False
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validChars = set('0123456789' +
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'abcdefghijklmnopqrstuvwxyz' +
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'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
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'¡¿ÄäÀàÁáÂâÃãÅåǍǎĄąĂăÆæĀā' +
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'ÇçĆćĈĉČčĎđĐďðÈèÉéÊêËëĚěĘęĖėĒē' +
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'ĜĝĢģĞğĤĥÌìÍíÎîÏïıĪīĮįĴĵĶķ' +
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'ĹĺĻļŁłĽľĿŀÑñŃńŇňŅņÖöÒòÓóÔôÕõŐőØøŒœ' +
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'ŔŕŘřẞߌśŜŝŞşŠšȘșŤťŢţÞþȚțÜüÙùÚúÛûŰűŨũŲųŮůŪū' +
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'ŴŵÝýŸÿŶŷŹźŽžŻż')
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if set(hashtag).issubset(validChars):
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return True
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if isValidLanguage(hashtag):
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return True
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return False
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|
|
|
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def _addHashTags(wordStr: str, httpPrefix: str, domain: str,
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replaceHashTags: {}, postHashtags: {}) -> bool:
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"""Detects hashtags and adds them to the replacements dict
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Also updates the hashtags list to be added to the post
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"""
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if replaceHashTags.get(wordStr):
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return True
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hashtag = wordStr[1:]
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if not validHashTag(hashtag):
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return False
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hashtagUrl = httpPrefix + "://" + domain + "/tags/" + hashtag
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postHashtags[hashtag] = {
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'href': hashtagUrl,
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'name': '#' + hashtag,
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'type': 'Hashtag'
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}
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replaceHashTags[wordStr] = "<a href=\"" + hashtagUrl + \
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"\" class=\"mention hashtag\" rel=\"tag\">#<span>" + \
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hashtag + "</span></a>"
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return True
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|
|
|
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def _addEmoji(baseDir: str, wordStr: str,
|
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httpPrefix: str, domain: str,
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replaceEmoji: {}, postTags: {},
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emojiDict: {}) -> bool:
|
|
"""Detects Emoji and adds them to the replacements dict
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|
Also updates the tags list to be added to the post
|
|
"""
|
|
if not wordStr.startswith(':'):
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return False
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|
if not wordStr.endswith(':'):
|
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return False
|
|
if len(wordStr) < 3:
|
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return False
|
|
if replaceEmoji.get(wordStr):
|
|
return True
|
|
# remove leading and trailing : characters
|
|
emoji = wordStr[1:]
|
|
emoji = emoji[:-1]
|
|
# is the text of the emoji valid?
|
|
if not validHashTag(emoji):
|
|
return False
|
|
if not emojiDict.get(emoji):
|
|
return False
|
|
emojiFilename = baseDir + '/emoji/' + emojiDict[emoji] + '.png'
|
|
if not os.path.isfile(emojiFilename):
|
|
return False
|
|
emojiUrl = httpPrefix + "://" + domain + \
|
|
"/emoji/" + emojiDict[emoji] + '.png'
|
|
postTags[emoji] = {
|
|
'icon': {
|
|
'mediaType': 'image/png',
|
|
'type': 'Image',
|
|
'url': emojiUrl
|
|
},
|
|
'name': ':' + emoji + ':',
|
|
"updated": fileLastModified(emojiFilename),
|
|
"id": emojiUrl.replace('.png', ''),
|
|
'type': 'Emoji'
|
|
}
|
|
return True
|
|
|
|
|
|
def tagExists(tagType: str, tagName: str, tags: {}) -> bool:
|
|
"""Returns true if a tag exists in the given dict
|
|
"""
|
|
for tag in tags:
|
|
if tag['name'] == tagName and tag['type'] == tagType:
|
|
return True
|
|
return False
|
|
|
|
|
|
def _addMention(wordStr: str, httpPrefix: str, following: str, petnames: str,
|
|
replaceMentions: {}, recipients: [], tags: {}) -> bool:
|
|
"""Detects mentions and adds them to the replacements dict and
|
|
recipients list
|
|
"""
|
|
possibleHandle = wordStr[1:]
|
|
# @nick
|
|
if following and '@' not in possibleHandle:
|
|
# fall back to a best effort match against the following list
|
|
# if no domain was specified. eg. @nick
|
|
possibleNickname = possibleHandle
|
|
for follow in following:
|
|
if '@' not in follow:
|
|
continue
|
|
followNick = follow.split('@')[0]
|
|
if possibleNickname == followNick:
|
|
followStr = follow.replace('\n', '').replace('\r', '')
|
|
replaceDomain = followStr.split('@')[1]
|
|
recipientActor = httpPrefix + "://" + \
|
|
replaceDomain + "/@" + possibleNickname
|
|
if recipientActor not in recipients:
|
|
recipients.append(recipientActor)
|
|
tags[wordStr] = {
|
|
'href': recipientActor,
|
|
'name': wordStr,
|
|
'type': 'Mention'
|
|
}
|
|
replaceMentions[wordStr] = \
|
|
"<span class=\"h-card\"><a href=\"" + httpPrefix + \
|
|
"://" + replaceDomain + "/@" + possibleNickname + \
|
|
"\" class=\"u-url mention\">@<span>" + possibleNickname + \
|
|
"</span></a></span>"
|
|
return True
|
|
# try replacing petnames with mentions
|
|
followCtr = 0
|
|
for follow in following:
|
|
if '@' not in follow:
|
|
followCtr += 1
|
|
continue
|
|
pet = petnames[followCtr].replace('\n', '')
|
|
if pet:
|
|
if possibleNickname == pet:
|
|
followStr = follow.replace('\n', '').replace('\r', '')
|
|
replaceNickname = followStr.split('@')[0]
|
|
replaceDomain = followStr.split('@')[1]
|
|
recipientActor = httpPrefix + "://" + \
|
|
replaceDomain + "/@" + replaceNickname
|
|
if recipientActor not in recipients:
|
|
recipients.append(recipientActor)
|
|
tags[wordStr] = {
|
|
'href': recipientActor,
|
|
'name': wordStr,
|
|
'type': 'Mention'
|
|
}
|
|
replaceMentions[wordStr] = \
|
|
"<span class=\"h-card\"><a href=\"" + httpPrefix + \
|
|
"://" + replaceDomain + "/@" + replaceNickname + \
|
|
"\" class=\"u-url mention\">@<span>" + \
|
|
replaceNickname + "</span></a></span>"
|
|
return True
|
|
followCtr += 1
|
|
return False
|
|
possibleNickname = None
|
|
possibleDomain = None
|
|
if '@' not in possibleHandle:
|
|
return False
|
|
possibleNickname = possibleHandle.split('@')[0]
|
|
if not possibleNickname:
|
|
return False
|
|
possibleDomain = \
|
|
possibleHandle.split('@')[1].strip('\n').strip('\r')
|
|
if not possibleDomain:
|
|
return False
|
|
if following:
|
|
for follow in following:
|
|
if follow.replace('\n', '').replace('\r', '') != possibleHandle:
|
|
continue
|
|
recipientActor = httpPrefix + "://" + \
|
|
possibleDomain + "/@" + possibleNickname
|
|
if recipientActor not in recipients:
|
|
recipients.append(recipientActor)
|
|
tags[wordStr] = {
|
|
'href': recipientActor,
|
|
'name': wordStr,
|
|
'type': 'Mention'
|
|
}
|
|
replaceMentions[wordStr] = \
|
|
"<span class=\"h-card\"><a href=\"" + httpPrefix + \
|
|
"://" + possibleDomain + "/@" + possibleNickname + \
|
|
"\" class=\"u-url mention\">@<span>" + possibleNickname + \
|
|
"</span></a></span>"
|
|
return True
|
|
# @nick@domain
|
|
if not (possibleDomain == 'localhost' or '.' in possibleDomain):
|
|
return False
|
|
recipientActor = httpPrefix + "://" + \
|
|
possibleDomain + "/@" + possibleNickname
|
|
if recipientActor not in recipients:
|
|
recipients.append(recipientActor)
|
|
tags[wordStr] = {
|
|
'href': recipientActor,
|
|
'name': wordStr,
|
|
'type': 'Mention'
|
|
}
|
|
replaceMentions[wordStr] = \
|
|
"<span class=\"h-card\"><a href=\"" + httpPrefix + \
|
|
"://" + possibleDomain + "/@" + possibleNickname + \
|
|
"\" class=\"u-url mention\">@<span>" + possibleNickname + \
|
|
"</span></a></span>"
|
|
return True
|
|
|
|
|
|
def replaceContentDuplicates(content: str) -> str:
|
|
"""Replaces invalid duplicates within content
|
|
"""
|
|
if isPGPEncrypted(content) or containsPGPPublicKey(content):
|
|
return content
|
|
while '<<' in content:
|
|
content = content.replace('<<', '<')
|
|
while '>>' in content:
|
|
content = content.replace('>>', '>')
|
|
content = content.replace('<\\p>', '')
|
|
return content
|
|
|
|
|
|
def removeTextFormatting(content: str) -> str:
|
|
"""Removes markup for bold, italics, etc
|
|
"""
|
|
if isPGPEncrypted(content) or containsPGPPublicKey(content):
|
|
return content
|
|
if '<' not in content:
|
|
return content
|
|
removeMarkup = ('b', 'i', 'ul', 'ol', 'li', 'em', 'strong',
|
|
'blockquote', 'h1', 'h2', 'h3', 'h4', 'h5')
|
|
for markup in removeMarkup:
|
|
content = content.replace('<' + markup + '>', '')
|
|
content = content.replace('</' + markup + '>', '')
|
|
content = content.replace('<' + markup.upper() + '>', '')
|
|
content = content.replace('</' + markup.upper() + '>', '')
|
|
return content
|
|
|
|
|
|
def removeLongWords(content: str, maxWordLength: int,
|
|
longWordsList: []) -> str:
|
|
"""Breaks up long words so that on mobile screens this doesn't
|
|
disrupt the layout
|
|
"""
|
|
if isPGPEncrypted(content) or containsPGPPublicKey(content):
|
|
return content
|
|
content = replaceContentDuplicates(content)
|
|
if ' ' not in content:
|
|
# handle a single very long string with no spaces
|
|
contentStr = content.replace('<p>', '').replace(r'<\p>', '')
|
|
if '://' not in contentStr:
|
|
if len(contentStr) > maxWordLength:
|
|
if '<p>' in content:
|
|
content = '<p>' + contentStr[:maxWordLength] + r'<\p>'
|
|
else:
|
|
content = content[:maxWordLength]
|
|
return content
|
|
words = content.split(' ')
|
|
if not longWordsList:
|
|
longWordsList = []
|
|
for wordStr in words:
|
|
if len(wordStr) > maxWordLength:
|
|
if wordStr not in longWordsList:
|
|
longWordsList.append(wordStr)
|
|
for wordStr in longWordsList:
|
|
if wordStr.startswith('<p>'):
|
|
wordStr = wordStr.replace('<p>', '')
|
|
if wordStr.startswith('<'):
|
|
continue
|
|
if len(wordStr) == 76:
|
|
if wordStr.upper() == wordStr:
|
|
# tox address
|
|
continue
|
|
if '=\"' in wordStr:
|
|
continue
|
|
if '@' in wordStr:
|
|
if '@@' not in wordStr:
|
|
continue
|
|
if '=.ed25519' in wordStr:
|
|
continue
|
|
if '.onion' in wordStr:
|
|
continue
|
|
if '.i2p' in wordStr:
|
|
continue
|
|
if 'https:' in wordStr:
|
|
continue
|
|
elif 'http:' in wordStr:
|
|
continue
|
|
elif 'i2p:' in wordStr:
|
|
continue
|
|
elif 'gnunet:' in wordStr:
|
|
continue
|
|
elif 'dat:' in wordStr:
|
|
continue
|
|
elif 'rad:' in wordStr:
|
|
continue
|
|
elif 'hyper:' in wordStr:
|
|
continue
|
|
elif 'briar:' in wordStr:
|
|
continue
|
|
if '<' in wordStr:
|
|
replaceWord = wordStr.split('<', 1)[0]
|
|
# if len(replaceWord) > maxWordLength:
|
|
# replaceWord = replaceWord[:maxWordLength]
|
|
content = content.replace(wordStr, replaceWord)
|
|
wordStr = replaceWord
|
|
if '/' in wordStr:
|
|
continue
|
|
if len(wordStr[maxWordLength:]) < maxWordLength:
|
|
content = content.replace(wordStr,
|
|
wordStr[:maxWordLength] + '\n' +
|
|
wordStr[maxWordLength:])
|
|
else:
|
|
content = content.replace(wordStr,
|
|
wordStr[:maxWordLength])
|
|
if content.startswith('<p>'):
|
|
if not content.endswith('</p>'):
|
|
content = content.strip() + '</p>'
|
|
return content
|
|
|
|
|
|
def _loadAutoTags(baseDir: str, nickname: str, domain: str) -> []:
|
|
"""Loads automatic tags file and returns a list containing
|
|
the lines of the file
|
|
"""
|
|
filename = acctDir(baseDir, nickname, domain) + '/autotags.txt'
|
|
if not os.path.isfile(filename):
|
|
return []
|
|
try:
|
|
with open(filename, 'r') as f:
|
|
return f.readlines()
|
|
except OSError:
|
|
print('EX: unable to read auto tags ' + filename)
|
|
return []
|
|
|
|
|
|
def _autoTag(baseDir: str, nickname: str, domain: str,
|
|
wordStr: str, autoTagList: [],
|
|
appendTags: []):
|
|
"""Generates a list of tags to be automatically appended to the content
|
|
"""
|
|
for tagRule in autoTagList:
|
|
if wordStr not in tagRule:
|
|
continue
|
|
if '->' not in tagRule:
|
|
continue
|
|
rulematch = tagRule.split('->')[0].strip()
|
|
if rulematch != wordStr:
|
|
continue
|
|
tagName = tagRule.split('->')[1].strip()
|
|
if tagName.startswith('#'):
|
|
if tagName not in appendTags:
|
|
appendTags.append(tagName)
|
|
else:
|
|
if '#' + tagName not in appendTags:
|
|
appendTags.append('#' + tagName)
|
|
|
|
|
|
def addHtmlTags(baseDir: str, httpPrefix: str,
|
|
nickname: str, domain: str, content: str,
|
|
recipients: [], hashtags: {},
|
|
isJsonContent: bool = False) -> str:
|
|
""" Replaces plaintext mentions such as @nick@domain into html
|
|
by matching against known following accounts
|
|
"""
|
|
if content.startswith('<p>'):
|
|
content = htmlReplaceEmailQuote(content)
|
|
return htmlReplaceQuoteMarks(content)
|
|
maxWordLength = 40
|
|
content = content.replace('\r', '')
|
|
content = content.replace('\n', ' --linebreak-- ')
|
|
content = _addMusicTag(content, 'nowplaying')
|
|
contentSimplified = \
|
|
content.replace(',', ' ').replace(';', ' ').replace('- ', ' ')
|
|
contentSimplified = contentSimplified.replace('. ', ' ').strip()
|
|
if contentSimplified.endswith('.'):
|
|
contentSimplified = contentSimplified[:len(contentSimplified)-1]
|
|
words = contentSimplified.split(' ')
|
|
|
|
# remove . for words which are not mentions
|
|
newWords = []
|
|
for wordIndex in range(0, len(words)):
|
|
wordStr = words[wordIndex]
|
|
if wordStr.endswith('.'):
|
|
if not wordStr.startswith('@'):
|
|
wordStr = wordStr[:-1]
|
|
if wordStr.startswith('.'):
|
|
wordStr = wordStr[1:]
|
|
newWords.append(wordStr)
|
|
words = newWords
|
|
|
|
replaceMentions = {}
|
|
replaceHashTags = {}
|
|
replaceEmoji = {}
|
|
emojiDict = {}
|
|
originalDomain = domain
|
|
domain = removeDomainPort(domain)
|
|
followingFilename = acctDir(baseDir, nickname, domain) + '/following.txt'
|
|
|
|
# read the following list so that we can detect just @nick
|
|
# in addition to @nick@domain
|
|
following = None
|
|
petnames = None
|
|
if '@' in words:
|
|
if os.path.isfile(followingFilename):
|
|
following = []
|
|
try:
|
|
with open(followingFilename, 'r') as f:
|
|
following = f.readlines()
|
|
except OSError:
|
|
print('EX: unable to read ' + followingFilename)
|
|
for handle in following:
|
|
pet = getPetName(baseDir, nickname, domain, handle)
|
|
if pet:
|
|
petnames.append(pet + '\n')
|
|
|
|
# extract mentions and tags from words
|
|
longWordsList = []
|
|
prevWordStr = ''
|
|
autoTagsList = _loadAutoTags(baseDir, nickname, domain)
|
|
appendTags = []
|
|
for wordStr in words:
|
|
wordLen = len(wordStr)
|
|
if wordLen > 2:
|
|
if wordLen > maxWordLength:
|
|
longWordsList.append(wordStr)
|
|
firstChar = wordStr[0]
|
|
if firstChar == '@':
|
|
if _addMention(wordStr, httpPrefix, following, petnames,
|
|
replaceMentions, recipients, hashtags):
|
|
prevWordStr = ''
|
|
continue
|
|
elif firstChar == '#':
|
|
# remove any endings from the hashtag
|
|
hashTagEndings = ('.', ':', ';', '-', '\n')
|
|
for ending in hashTagEndings:
|
|
if wordStr.endswith(ending):
|
|
wordStr = wordStr[:len(wordStr) - 1]
|
|
break
|
|
|
|
if _addHashTags(wordStr, httpPrefix, originalDomain,
|
|
replaceHashTags, hashtags):
|
|
prevWordStr = ''
|
|
continue
|
|
elif ':' in wordStr:
|
|
wordStr2 = wordStr.split(':')[1]
|
|
# print('TAG: emoji located - ' + wordStr)
|
|
if not emojiDict:
|
|
# emoji.json is generated so that it can be customized and
|
|
# the changes will be retained even if default_emoji.json
|
|
# is subsequently updated
|
|
if not os.path.isfile(baseDir + '/emoji/emoji.json'):
|
|
copyfile(baseDir + '/emoji/default_emoji.json',
|
|
baseDir + '/emoji/emoji.json')
|
|
emojiDict = loadJson(baseDir + '/emoji/emoji.json')
|
|
|
|
# append custom emoji to the dict
|
|
if os.path.isfile(baseDir + '/emojicustom/emoji.json'):
|
|
customEmojiDict = \
|
|
loadJson(baseDir + '/emojicustom/emoji.json')
|
|
if customEmojiDict:
|
|
emojiDict = dict(emojiDict, **customEmojiDict)
|
|
|
|
# print('TAG: looking up emoji for :' + wordStr2 + ':')
|
|
_addEmoji(baseDir, ':' + wordStr2 + ':', httpPrefix,
|
|
originalDomain, replaceEmoji, hashtags,
|
|
emojiDict)
|
|
else:
|
|
if _autoTag(baseDir, nickname, domain, wordStr,
|
|
autoTagsList, appendTags):
|
|
prevWordStr = ''
|
|
continue
|
|
if prevWordStr:
|
|
if _autoTag(baseDir, nickname, domain,
|
|
prevWordStr + ' ' + wordStr,
|
|
autoTagsList, appendTags):
|
|
prevWordStr = ''
|
|
continue
|
|
prevWordStr = wordStr
|
|
|
|
# add any auto generated tags
|
|
for appended in appendTags:
|
|
content = content + ' ' + appended
|
|
_addHashTags(appended, httpPrefix, originalDomain,
|
|
replaceHashTags, hashtags)
|
|
|
|
# replace words with their html versions
|
|
for wordStr, replaceStr in replaceMentions.items():
|
|
content = content.replace(wordStr, replaceStr)
|
|
for wordStr, replaceStr in replaceHashTags.items():
|
|
content = content.replace(wordStr, replaceStr)
|
|
if not isJsonContent:
|
|
for wordStr, replaceStr in replaceEmoji.items():
|
|
content = content.replace(wordStr, replaceStr)
|
|
|
|
content = addWebLinks(content)
|
|
if longWordsList:
|
|
content = removeLongWords(content, maxWordLength, longWordsList)
|
|
content = limitRepeatedWords(content, 6)
|
|
content = content.replace(' --linebreak-- ', '</p><p>')
|
|
content = htmlReplaceEmailQuote(content)
|
|
return '<p>' + htmlReplaceQuoteMarks(content) + '</p>'
|
|
|
|
|
|
def getMentionsFromHtml(htmlText: str,
|
|
matchStr="<span class=\"h-card\"><a href=\"") -> []:
|
|
"""Extracts mentioned actors from the given html content string
|
|
"""
|
|
mentions = []
|
|
if matchStr not in htmlText:
|
|
return mentions
|
|
mentionsList = htmlText.split(matchStr)
|
|
for mentionStr in mentionsList:
|
|
if '"' not in mentionStr:
|
|
continue
|
|
actorStr = mentionStr.split('"')[0]
|
|
if actorStr.startswith('http') or \
|
|
actorStr.startswith('gnunet') or \
|
|
actorStr.startswith('i2p') or \
|
|
actorStr.startswith('hyper') or \
|
|
actorStr.startswith('dat:'):
|
|
if actorStr not in mentions:
|
|
mentions.append(actorStr)
|
|
return mentions
|
|
|
|
|
|
def extractMediaInFormPOST(postBytes, boundary, name: str):
|
|
"""Extracts the binary encoding for image/video/audio within a http
|
|
form POST
|
|
Returns the media bytes and the remaining bytes
|
|
"""
|
|
imageStartBoundary = b'Content-Disposition: form-data; name="' + \
|
|
name.encode('utf8', 'ignore') + b'";'
|
|
imageStartLocation = postBytes.find(imageStartBoundary)
|
|
if imageStartLocation == -1:
|
|
return None, postBytes
|
|
|
|
# bytes after the start boundary appears
|
|
mediaBytes = postBytes[imageStartLocation:]
|
|
|
|
# look for the next boundary
|
|
imageEndBoundary = boundary.encode('utf8', 'ignore')
|
|
imageEndLocation = mediaBytes.find(imageEndBoundary)
|
|
if imageEndLocation == -1:
|
|
# no ending boundary
|
|
return mediaBytes, postBytes[:imageStartLocation]
|
|
|
|
# remaining bytes after the end of the image
|
|
remainder = mediaBytes[imageEndLocation:]
|
|
|
|
# remove bytes after the end boundary
|
|
mediaBytes = mediaBytes[:imageEndLocation]
|
|
|
|
# return the media and the before+after bytes
|
|
return mediaBytes, postBytes[:imageStartLocation] + remainder
|
|
|
|
|
|
def saveMediaInFormPOST(mediaBytes, debug: bool,
|
|
filenameBase: str = None) -> (str, str):
|
|
"""Saves the given media bytes extracted from http form POST
|
|
Returns the filename and attachment type
|
|
"""
|
|
if not mediaBytes:
|
|
if filenameBase:
|
|
# remove any existing files
|
|
extensionTypes = getImageExtensions()
|
|
for ex in extensionTypes:
|
|
possibleOtherFormat = filenameBase + '.' + ex
|
|
if os.path.isfile(possibleOtherFormat):
|
|
try:
|
|
os.remove(possibleOtherFormat)
|
|
except OSError:
|
|
if debug:
|
|
print('EX: saveMediaInFormPOST ' +
|
|
'unable to delete other ' +
|
|
str(possibleOtherFormat))
|
|
if os.path.isfile(filenameBase):
|
|
try:
|
|
os.remove(filenameBase)
|
|
except OSError:
|
|
if debug:
|
|
print('EX: saveMediaInFormPOST ' +
|
|
'unable to delete ' +
|
|
str(filenameBase))
|
|
|
|
if debug:
|
|
print('DEBUG: No media found within POST')
|
|
return None, None
|
|
|
|
mediaLocation = -1
|
|
searchStr = ''
|
|
filename = None
|
|
|
|
# directly search the binary array for the beginning
|
|
# of an image
|
|
extensionList = {
|
|
'png': 'image/png',
|
|
'jpeg': 'image/jpeg',
|
|
'gif': 'image/gif',
|
|
'svg': 'image/svg+xml',
|
|
'webp': 'image/webp',
|
|
'avif': 'image/avif',
|
|
'mp4': 'video/mp4',
|
|
'ogv': 'video/ogv',
|
|
'mp3': 'audio/mpeg',
|
|
'ogg': 'audio/ogg',
|
|
'flac': 'audio/flac',
|
|
'zip': 'application/zip'
|
|
}
|
|
detectedExtension = None
|
|
for extension, contentType in extensionList.items():
|
|
searchStr = b'Content-Type: ' + contentType.encode('utf8', 'ignore')
|
|
mediaLocation = mediaBytes.find(searchStr)
|
|
if mediaLocation > -1:
|
|
# image/video/audio binaries
|
|
if extension == 'jpeg':
|
|
extension = 'jpg'
|
|
elif extension == 'mpeg':
|
|
extension = 'mp3'
|
|
if filenameBase:
|
|
filename = filenameBase + '.' + extension
|
|
attachmentMediaType = \
|
|
searchStr.decode().split('/')[0].replace('Content-Type: ', '')
|
|
detectedExtension = extension
|
|
break
|
|
|
|
if not filename:
|
|
return None, None
|
|
|
|
# locate the beginning of the image, after any
|
|
# carriage returns
|
|
startPos = mediaLocation + len(searchStr)
|
|
for offset in range(1, 8):
|
|
if mediaBytes[startPos+offset] != 10:
|
|
if mediaBytes[startPos+offset] != 13:
|
|
startPos += offset
|
|
break
|
|
|
|
# remove any existing image files with a different format
|
|
if detectedExtension != 'zip':
|
|
extensionTypes = getImageExtensions()
|
|
for ex in extensionTypes:
|
|
if ex == detectedExtension:
|
|
continue
|
|
possibleOtherFormat = \
|
|
filename.replace('.temp', '').replace('.' +
|
|
detectedExtension, '.' +
|
|
ex)
|
|
if os.path.isfile(possibleOtherFormat):
|
|
try:
|
|
os.remove(possibleOtherFormat)
|
|
except OSError:
|
|
if debug:
|
|
print('EX: saveMediaInFormPOST ' +
|
|
'unable to delete other 2 ' +
|
|
str(possibleOtherFormat))
|
|
|
|
# don't allow scripts within svg files
|
|
if detectedExtension == 'svg':
|
|
svgStr = mediaBytes[startPos:]
|
|
svgStr = svgStr.decode()
|
|
if dangerousSVG(svgStr, False):
|
|
return None, None
|
|
|
|
try:
|
|
with open(filename, 'wb') as fp:
|
|
fp.write(mediaBytes[startPos:])
|
|
except OSError:
|
|
print('EX: unable to write media')
|
|
|
|
if not os.path.isfile(filename):
|
|
print('WARN: Media file could not be written to file: ' + filename)
|
|
return None, None
|
|
print('Uploaded media file written: ' + filename)
|
|
|
|
return filename, attachmentMediaType
|
|
|
|
|
|
def extractTextFieldsInPOST(postBytes, boundary: str, debug: bool,
|
|
unitTestData: str = None) -> {}:
|
|
"""Returns a dictionary containing the text fields of a http form POST
|
|
The boundary argument comes from the http header
|
|
"""
|
|
if not unitTestData:
|
|
msgBytes = email.parser.BytesParser().parsebytes(postBytes)
|
|
messageFields = msgBytes.get_payload(decode=True).decode('utf-8')
|
|
else:
|
|
messageFields = unitTestData
|
|
|
|
if debug:
|
|
print('DEBUG: POST arriving ' + messageFields)
|
|
|
|
messageFields = messageFields.split(boundary)
|
|
fields = {}
|
|
fieldsWithSemicolonAllowed = (
|
|
'message', 'bio', 'autoCW', 'password', 'passwordconfirm',
|
|
'instanceDescription', 'instanceDescriptionShort',
|
|
'subject', 'location', 'imageDescription'
|
|
)
|
|
# examine each section of the POST, separated by the boundary
|
|
for f in messageFields:
|
|
if f == '--':
|
|
continue
|
|
if ' name="' not in f:
|
|
continue
|
|
postStr = f.split(' name="', 1)[1]
|
|
if '"' not in postStr:
|
|
continue
|
|
postKey = postStr.split('"', 1)[0]
|
|
postValueStr = postStr.split('"', 1)[1]
|
|
if ';' in postValueStr:
|
|
if postKey not in fieldsWithSemicolonAllowed and \
|
|
not postKey.startswith('edited'):
|
|
continue
|
|
if '\r\n' not in postValueStr:
|
|
continue
|
|
postLines = postValueStr.split('\r\n')
|
|
postValue = ''
|
|
if len(postLines) > 2:
|
|
for line in range(2, len(postLines)-1):
|
|
if line > 2:
|
|
postValue += '\n'
|
|
postValue += postLines[line]
|
|
fields[postKey] = urllib.parse.unquote(postValue)
|
|
return fields
|
|
|
|
|
|
def limitRepeatedWords(text: str, maxRepeats: int) -> str:
|
|
"""Removes words which are repeated many times
|
|
"""
|
|
words = text.replace('\n', ' ').split(' ')
|
|
repeatCtr = 0
|
|
repeatedText = ''
|
|
replacements = {}
|
|
prevWord = ''
|
|
for word in words:
|
|
if word == prevWord:
|
|
repeatCtr += 1
|
|
if repeatedText:
|
|
repeatedText += ' ' + word
|
|
else:
|
|
repeatedText = word + ' ' + word
|
|
else:
|
|
if repeatCtr > maxRepeats:
|
|
newText = ((prevWord + ' ') * maxRepeats).strip()
|
|
replacements[prevWord] = [repeatedText, newText]
|
|
repeatCtr = 0
|
|
repeatedText = ''
|
|
prevWord = word
|
|
|
|
if repeatCtr > maxRepeats:
|
|
newText = ((prevWord + ' ') * maxRepeats).strip()
|
|
replacements[prevWord] = [repeatedText, newText]
|
|
|
|
for word, item in replacements.items():
|
|
text = text.replace(item[0], item[1])
|
|
return text
|
|
|
|
|
|
def getPriceFromString(priceStr: str) -> (str, str):
|
|
"""Returns the item price and currency
|
|
"""
|
|
currencies = getCurrencies()
|
|
for symbol, name in currencies.items():
|
|
if symbol in priceStr:
|
|
price = priceStr.replace(symbol, '')
|
|
if isfloat(price):
|
|
return price, name
|
|
elif name in priceStr:
|
|
price = priceStr.replace(name, '')
|
|
if isfloat(price):
|
|
return price, name
|
|
if isfloat(priceStr):
|
|
return priceStr, "EUR"
|
|
return "0.00", "EUR"
|
|
|
|
|
|
def _wordsSimilarityHistogram(words: []) -> {}:
|
|
"""Returns a histogram for word combinations
|
|
"""
|
|
histogram = {}
|
|
for index in range(1, len(words)):
|
|
combinedWords = words[index - 1] + words[index]
|
|
if histogram.get(combinedWords):
|
|
histogram[combinedWords] += 1
|
|
else:
|
|
histogram[combinedWords] = 1
|
|
return histogram
|
|
|
|
|
|
def _wordsSimilarityWordsList(content: str) -> []:
|
|
"""Returns a list of words for the given content
|
|
"""
|
|
removePunctuation = ('.', ',', ';', '-', ':', '"')
|
|
content = removeHtml(content).lower()
|
|
for p in removePunctuation:
|
|
content = content.replace(p, ' ')
|
|
content = content.replace(' ', ' ')
|
|
return content.split(' ')
|
|
|
|
|
|
def wordsSimilarity(content1: str, content2: str, minWords: int) -> int:
|
|
"""Returns percentage similarity
|
|
"""
|
|
if content1 == content2:
|
|
return 100
|
|
|
|
words1 = _wordsSimilarityWordsList(content1)
|
|
if len(words1) < minWords:
|
|
return 0
|
|
|
|
words2 = _wordsSimilarityWordsList(content2)
|
|
if len(words2) < minWords:
|
|
return 0
|
|
|
|
histogram1 = _wordsSimilarityHistogram(words1)
|
|
histogram2 = _wordsSimilarityHistogram(words2)
|
|
|
|
diff = 0
|
|
for combinedWords, hits in histogram1.items():
|
|
if not histogram2.get(combinedWords):
|
|
diff += 1
|
|
else:
|
|
diff += abs(histogram2[combinedWords] - histogram1[combinedWords])
|
|
return 100 - int(diff * 100 / len(histogram1.items()))
|
|
|
|
|
|
def containsInvalidLocalLinks(content: str) -> bool:
|
|
"""Returns true if the given content has invalid links
|
|
"""
|
|
invalidStrings = (
|
|
'mute', 'unmute', 'editeventpost', 'notifypost',
|
|
'delete', 'options', 'page', 'repeat',
|
|
'bm', 'tl', 'actor', 'unrepeat', 'eventid',
|
|
'unannounce', 'like', 'unlike', 'bookmark',
|
|
'unbookmark', 'likedBy', 'time',
|
|
'year', 'month', 'day', 'editnewpost',
|
|
'graph', 'showshare', 'category', 'showwanted',
|
|
'rmshare', 'rmwanted', 'repeatprivate',
|
|
'unrepeatprivate', 'replyto',
|
|
'replyfollowers', 'replydm', 'editblogpost',
|
|
'handle', 'blockdomain'
|
|
)
|
|
for invStr in invalidStrings:
|
|
if '?' + invStr + '=' in content:
|
|
return True
|
|
return False
|