Hi,
I have compiled Qpopper-4.0.9 with --with-pam option on hpux11iv1
where it is not working properly,but Qpopper-4.0.5 is not giving issues if I
give this option.You can find details of the problem below.
Thanks & Regards,
Ravindranath
-----Original Message-----
From: Ravindranath, Chavalam
Sent: Wednesday, April 09, 2008 2:38 PM
To: 'Randall Gellens'
Cc: [email protected]
Subject: RE: Qpopper failure while using with pam option enabled
Hi Randell,
Thanks a lot for the quick response.
I have taken the qoppper source from this location
ftp://ftp.qualcomm.com/eudora/servers/unix/popper/ .Also I did'nt get any
mismatched libraries issues while compiling.
This is the configraion script I used for compiling qpopper
./configure --prefix=/opt/iexpress/qpopper --with-openssl=/opt/openssl
--with-pam=pop3 --enable-low-debug --enable-debugging
(/opt is standard location in hpux)
And I debugged qpopper with -t option and TUSC(Trace Unix System Calls.. hope
it is similar to ktrace in linux)
But these results are similar to the result when I compiled qoppper with
gdb(gnudebugger).
I am attaching the corresponding logs.
trace.hp is the log for popper when debugged with -t option kerneltrace.hp is
the log for popper when debugged with tusc (These logs can be better viewed in
wordpad)
Can you suggest solution if any.
Thanks & Regards,
Ravindranath
________________________________
From: Randall Gellens [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 09, 2008 6:54 AM
To: Ravindranath, Chavalam
Cc: [email protected]
Subject: Re: Qpopper failure while using with pam option enabled
At 9:21 AM +0000 4/8/08, Chavalam Ravindranath wrote:
Hi,
I have built qpopper(4.0.9) on hpux 11.11 using --with-pam
option.
But when I try to test this I am getting the following o/p.
# telnet localhost 110
Trying...
Connected to localhost.
Escape character is '^]'.
+OK Qpopper (version 4.0.9) at skoda.ind.hp.com starting.
user test
+OK Password required for test.
pass test
Connection closed by foreign host.
when I debugged with gdb backtrace looks like this
#0 0x1bf50 in PAM_qpopper_conv (num_msg=3, msg=0x7f7f6598,
resp=0x7f7f6520,
appdata_ptr=0x7f7f0bb8) at pop_pass.c:442
#1 0x7aeb5f10 in __pam_input_output+0x128 () from /usr/lib/libpam.1
#2 0x7aeb5d90 in __pam_display_msg+0x24 () from /usr/lib/libpam.1
#3 0x7ad89fb8 in pam_sm_setcred+0x2e8 () from
/usr/lib/security/libpam_unix.1
#4 0x7aeb3a90 in pam_setcred+0xec () from /usr/lib/libpam.1
#5 0x1c754 in auth_user (p=0x7f7f0bb8, pw=0x7f7f1d24) at pop_pass.c:564
#6 0x1ca68 in pop_pass (p=0x7f7f0bb8) at pop_pass.c:1261
#7 0x237f0 in qpopper (argc=1, argv=0x7f7f09ec) at popper.c:349
#8 0x30d1c in main (argc=1, argv=0x7f7f09ec) at main.c:168
the msg structure(second argument for PAM_qpopper_conv) is generated
within __pam_input_output with num_msg=3 .msg[1] is showing bad address
(gdb) p (char *) msg[0]->msg
$26 = 0x7f7f2498 "Removing root credentials would break the rpc
services that"
(gdb) p (char *) msg[1]->msg
Error accessing memory address 0x4: Bad address.
In libpam library,msg structure is created properly but
PAM_qpopper_conv is unable to access the msg memory structure
When I gave wrong password I am getting this error
# telnet localhost 110
Trying...
Connected to localhost.
Escape character is '^]'.
+OK Qpopper (version 4.0.9) at skoda.ind.hp.com starting.
user test
+OK Password required for test.
pass test1
-ERR [AUTH] PAM authentication failed for user "test": Authentication
failed (9)
+OK Pop server at skoda.ind.hp.com signing off.
Connection closed by foreign host.
Seems it is authenticating but not able to read the msg structure
Hope you can help me to fix this issue or do I need to send any
additional information regard this issue.
Thanks & Regards,
Ravindranath
I'm puzzled. Did you build from the original 4.0.9 sources or from a package?
I'm wondering if perhaps there is a problem with a library mismatch from a
precompiled or intermediate file?
You could try building 4.0.11 to see if it is better.
I'd also suggest getting a Qpopper trace just to see what it shows.
To enable tracing in Qpopper:
1. Do a 'make clean'
2. Re-run ./configure, adding '--enable-debugging'.
3. Edit the inetd.conf line for Qpopper, adding '-d' or '-t <tracefile-path>'.
4. Send inetd (or xinetd) a HUP signal.
(Steps 3 and 4 are only needed if you use inetd (or xinetd). In standalone
mode, you can add '-d' or '-t <tracefile-path>' to the command line directly.)
(In either standalone or inetd mode, if you use a configuration file you can
add 'set debug' or 'set tracefile = <tracefile>' to either a global or
user-specific configuration file instead of steps 3 and 4.)
This causes detailed tracing to be written to the syslog or to the file
specified as 'tracefile'.
If you're still getting a crash, I'd suggest a kernel trace using ktrace(1) or
whatever is the HPUX tool. Normally, the way to do this is to modify the inetd
or xinetd line to run qpopper via ktrace, usually on a different port so as to
not affect production users (unless this is on a test system). For standalone
on a test system, also run qpopper from ktrace.
