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wrap_message: fall back to bufsize=510 on protocols declaring S2S_BUFSIZE to be 0 (unlimited)

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This commit is contained in:
James Lu 2018-05-18 19:09:06 -07:00
parent 559b262db8
commit 20bbf531e6
1 changed files with 12 additions and 3 deletions
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15
classes.py
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@ -1876,6 +1876,10 @@ class IRCNetwork(PyLinkNetworkCoreWithUtils):
For IRC, the maximum length of one message is calculated as S2S_BUFSIZE (default to 510)
minus the length of ":sender-nick!sender-user@sender-host PRIVMSG #target :"
"""
# We explicitly want wrapping (e.g. for messages eventually making its way to a user), so
# use the default bufsize of 510 even if the IRCd's S2S protocol allows infinitely long
# long messages.
bufsize = self.S2S_BUFSIZE or IRCNetwork.S2S_BUFSIZE
try:
target = self.get_friendly_name(target)
except KeyError:
@ -1883,10 +1887,15 @@ class IRCNetwork(PyLinkNetworkCoreWithUtils):
'(source=%s)', self.name, target, source, exc_info=True)
prefixstr = ":%s PRIVMSG %s :" % (self.get_hostmask(source), target)
maxlen = self.S2S_BUFSIZE - len(prefixstr)
maxlen = bufsize - len(prefixstr)
log.debug('(%s) wrap_message: length of prefix %r is %s, S2S_BUFSIZE=%s, maxlen=%s',
self.name, prefixstr, len(prefixstr), self.S2S_BUFSIZE, maxlen)
log.debug('(%s) wrap_message: length of prefix %r is %s, bufsize=%s, maxlen=%s',
self.name, prefixstr, len(prefixstr), bufsize, maxlen)
if maxlen <= 0:
log.error('(%s) Got invalid maxlen %s for wrap_message (%s -> %s)', self.name, maxlen,
source, target)
return [text]
return textwrap.wrap(text, width=maxlen)