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  14    <H1>[IRCServices Coding] The case of the non-existant user</H1>
  15     <B>Mark Hetherington</B>
  16     <A HREF="mailto:ircservices-coding%40ircservices.za.net?Subject=%5BIRCServices%20Coding%5D%20The%20case%20of%20the%20non-existant%20user&In-Reply-To="
  17        TITLE="[IRCServices Coding] The case of the non-existant user">mark at ctcp.net
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  19     <I>Sat Mar  2 18:31:16 PST 2002</I>
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  34 <PRE>Odd scenario, and I am not sure whether services should/could support it,
  35 but since it seems to be the cause of a particular chain of log messages,
  36 it could well be something for the FAQ if it is not something that
  37 should/could be supported.
  38
  39 A user logs on to IRC, identifies to NickServ then joins a channel that he
  40 has auto-op rights on. He then immediately changes nickname to another
  41 nickname (registered or not). Services logs the fact that a mode change was
  42 requested for a nonexistant user. The nicknames in the example are not
  43 linked.
  44
  45 &gt;<i>From logs:
  46 </I>
  47 [channel]
  48 [14:38] Damon (<A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices-coding">damon at xxxx</A>) joined #channel.
  49 [14:38] Nick change: Damon -&gt; Memphis
  50
  51 [Services.log]
  52 [Mar 02 14:38:59 2002] nickserv/main: Damon!<A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices-coding">damon at xxxx</A> identified for nick
  53 Damon
  54 [Mar 02 14:38:59 2002] channel: MODE #channel +o for nonexistent user Damon
  55 [Mar 02 14:39:13 2002] nickserv/main: Memphis!<A HREF="http://www.ircservices.za.net/mailman/listinfo/ircservices-coding">damon at xxxx</A> identified for
  56 nick Memphis
  57
  58 I have not managed to be quick enough to reproduce this 100% hence my lack
  59 of knowledge on whether this affects linked nicknames, but in my defence it
  60 is kinda late here and the timing is somewhat critical :). I suspect that
  61 it may apply to linked nicknames as well but assuming that services logs an
  62 error returned by the attempt to set a mode, I imagine the linked nick
  63 would trigger another test which may make mitigate the problem from a
  64 user's perspective.
  65
  66 I guess it would quite complex for services to track the user and supress
  67 the error as well as leading to potential circular lockup, so maybe just
  68 one for the FAQ.
  69
  70
  71 --
  72 Mark.
  73
  74
  75
  76 </PRE>
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