That error code means "check errno". A few users got it and we never
figured out what happened - it usually fixed itself after restarting
something - so hopefully with this we'll have more information the next
time.
This way net_gethostbyaddr will fail when the system is unable to
resolve the address to a valid host name.
Without this flag in case of failure the function would return the ip
address instead of failing.
Have a ignore_find_full method that is the one that all the new code
should be using and provide some working stubs for ignore_find and
ignore_find_noact.
This way we prevent the creation of duplicate ignores since the old code
skipped the ignore_find call when a pattern was specified.
It should also cover all the cases where the ignores would be wrongly
overwritten, such as the case outlined in #78.
Issue #340 brought to our attention the fact that under certain
circumstances irssi would go on a wild rampage and carelessly overwrite
some saved channel records in the configuration file.
This happened because the code didn't take into account the case where
the channel index in setupchannels wouldn't match the one in the
configuration; this actually happens when the user removes a chatnet
without removing the associated channels.
The symptom for this one is randomly getting lines split before the last
word, even if there's no need for splitting. Also, this function is only
reached if recode is on, and iconv failed (for example, due to an
incorrect source charset). Thanks to vague for finding this and
providing valgrind logs.
The loop that looks for spaces tried to read backwards from the end of
the current line, with the end being determined by len. Assuming
strsplit_len() with len=400, this meant accessing str[399] in the first
iteration. For strings that don't need splitting, this means an invalid
read always.
If that invalid read happens to hit garbage that has a space character,
(len - offset) points after the end of string, which isn't a problem for
g_strndup() since it stops at the first null, and no splitting happens.
If the garbage doesn't have any spaces, it splits by the last word.
This commit avoids that loop entirely if (remaining_len > len). It also
changes the way it iterates over the string to be much less confusing.
