Comment 2 for bug 212711

this is true, I have chosen always to append the log, however the problem
disappears when I chose always overwrite, so I can't append ?

On Mon, Apr 7, 2008 at 10:34 PM, Jacob Nevins <
<email address hidden>> wrote:

> > putty suddenly exit with the following error message when trying to
> > connect over http proxy :
> >
> > putty: ../unix/uxmisc.c:144: f_open: Assertion `mode[0] == 'w'' failed.
> > Aborted (core dumped)
>
> This can happen if you've enabled PuTTY's logging and it tries to append
> to a file ('What to do if the log file already exists' either set to
> 'Always append to the end of it', or 'Ask the user every time' and the
> user hit 'Append').
>
> I don't think it's got anything to do with use of an HTTP proxy.
>
> Can you confirm that this is what you're doing?
>
> The bug I describe was introduced in 0.59 (r7084). It's happening
> because PuTTY sets the 'is_private' flag to uxmisc.c:f_open() when
> opening a log file, in an attempt to keep session logs private (because
> that seemed like a good idea at the time; r7084 was mainly about
> permissions on puttygen-generated keypairs). However, f_open() as
> currently written fails the assertion above when presented with a file
> mode of 'a' (append).
>
> It's not clear to me what f_open() _should_ do in this situation
> (although we shouldn't die, of course). The options are:
>
> - explicitly chmod the existing file to make it private (prevents users
> sharing a growing logfile);
>
> - carry on regardless of the existing file's permissions (risks
> disclosing sensitive data);
>
> Or we could change our mind about session logs being private, and revert
> to that being the user's responsibility.
>
> > I am using hardy heron beta, and I am very up to date
> >
> > my kernel is 2.6.24-15-generic #1 SMP Fri Apr 4 03:48:31 UTC 2008 i686
> > GNU/Linux, but the problem happened even at the previous kernel version
> > (before I've updated)
>
> I don't think any of those things is significant.
>
> > --
> > putty shutdown when trying to connect over http proxy
> > https://bugs.launchpad.net/bugs/212711
> > You received this bug notification because you are subscribed to putty
> > in ubuntu.
>
> --
> putty shutdown when trying to connect over http proxy
> https://bugs.launchpad.net/bugs/212711
> You received this bug notification because you are a direct subscriber
> of the bug.
>