Hello Paul,
> I got my dev environment working (limping) again.
> I built a pptpd with symbols and statically linked.
>
>
> It was crashing in libwrap.
> I added the line "pptpd: ALL" to /etc/hosts.allow and now it works.
>
>
> My libwrap hosts.deny is the default, libwrap should obviously not
> be crashing. Unfortunately I didn't compile uClibc and libwrap with
> symbols so I don't know what libwrap screwed up (or uClibc):
>
> Core was generated by `./pptpd --fg'.
> Program terminated with signal 11, Segmentation fault.
> #0 0x0805207d in inet_pton ()
> (gdb) where
> #0 0x0805207d in inet_pton ()
> #1 0x08052452 in getaddrinfo ()
> #2 0x0804bb70 in sock_hostname (host=0xbffff880) at socket.c:265
> #3 0x0804b560 in eval_hostname (host=0xbffff880) at eval.c:77
> #4 0x0804a402 in host_match (tok=0xbfffee85 "PARANOID", host=0xbffff880)
> at hosts_access.c:316 #5 0x0804a108 in list_match (list=0xbfffee84 "
> PARANOID", request=0xbffff770,
> match_fn=0x804a1e5 <client_match>) at hosts_access.c:217 #6 0x0804a005 in
> table_match (table=0xbfffee84 " PARANOID", request=0xbffff770) at
> hosts_access.c:173
> #7 0x08049f0a in hosts_access (request=0xbffff770) at hosts_access.c:133
> #8 0x0804968d in pptp_manager (argc=2, argv=0xbffffdf4) at
> pptpmanager.c:219
> #9 0x08048745 in main (argc=2, argv=0xbffffdf4) at pptpd.c:420
> (gdb) up
> #1 0x08052452 in getaddrinfo ()
> (gdb) up
> #2 0x0804bb70 in sock_hostname (host=0xbffff880) at socket.c:265
> 265 if (getaddrinfo(host->name, NULL, &hints, &res0) != 0) {
> (gdb) print host->name
> $1 = "protempore.shockwave.org", '\0' <repeats 103 times>
> (gdb) print hints
> $1 = {ai_flags = 3, ai_family = 2, ai_socktype = 1, ai_protocol = 0,
> ai_addrlen = 0, ai_addr = 0x0, ai_canonname = 0x0, ai_next = 0x0} (gdb)
> print res0 $2 = (struct addrinfo *) 0x0
> (gdb) quit
>
>
> The arguments being passed into getaddrinfo look, at first glance, to
> be reasonable. I looked over the hints getting passed in, they look good.
>
>
> There may be a generic problem dealing with ALL: PARANOID, this is the
> first time I've ever actually violated a libwrap directive since my
> firewall usually protects everything.
>
This is the first time I see a problem with libwrap.... Debian doesn't use
"ALL: PARANOID" by default anymore for a long time now, maybe we should do
the same:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=62372
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=55528
But this doesn't explain the problem ofcourse... This is a strange line
btw: "$1 = "protempore.shockwave.org", '\0' <repeats 103 times>" Why does
it repeats 103 times?
> Worst case, I'll need to rebuild uclibc with symbols, but I'm not looking
> forward to that, my dev environment is quite shakey thanks to compiler
> mismatches. I was hoping to not do any more leaf development until the
> upgrade to gcc-4.0 and a recent uclibc.
>
The next major version (3.0) of Bering-uClibc will have an uClibc update.
An update to gcc-4.0 is a different story, I only hear people complaining
about it ;-) but ofcourse we will test.
Eric
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