RE: Pam-list Digest, Vol 42, Issue 3

"Chu Qiu" <qiu.chu@xxxxxxxxxxx> · Sun, 5 Aug 2007 12:55:26 -0400

Thank you very much!

1. Yes, I have already defined the "service" 
"check_user"
2. Yes, I used the "misc_conv" which defined in the pam_misc.h

I changed 
my "check_user" service file is:
auth       
required     pam_stack.so 
service=system-auth
auth       
required     pam_nologin.so
account    
required     pam_stack.so 
service=system-auth

I 
get some new results , but i don't unterstand what's going 
on?

1. I 
login the system as root , and complied my code , then run it , everything is 
ok
2. I 
login the system as no-root , run the program complied by root , get this code 
"PAM_AUTHINFO_UNAVAIL"
3. I 
login the system as no-root , complied my code ,then run the program , get this 
code "PAM_AUTHINFO_UNAVAIL"
4. I login the system as no-root 
,then run "sudo chmod u+s check_user" on the program i just complied,  run 
it ,
 I get the code 
"PAM_AUTHINFO_UNAVAIL"

Please explain 
for me.
Thank you very 
much!

Chu 
Qiu

From: pam-list-bounces@xxxxxxxxxx 
[mailto:pam-list-bounces@xxxxxxxxxx] On Behalf Of Andreas 
Schindler
Sent: 2007年8月4日 15:56
To: 
pam-list@xxxxxxxxxx
Subject: Re: Pam-list Digest, Vol 42, Issue 
3

  I'm studying on pam library 
  , and I run the code given by "The Linux-PAM Application Developer's Guide" on 
  redhat linux.

  "retval = 
  pam_authenticate(pamh, 0);" is running successfully

  but the next "retval = 
  pam_acct_mgmt(pamh, 0);" return "PAM_AUTHINFO_UNAVAIL"

  I don't know what problem is 
  it? Please do me a favour.

  Thank you very 
  much

Chu,

there are 
several things in your program to be checked:

  have you already defined the 'service' 'check_user' in your pam.d 
  directory?
If not, the behaviour will fall back to service 'other', which 
  may be missing too. 

Does your conversation function 'conv' as defined in pam_start() work 
  well, i.e.
does it query for a password? If not, you must supply a password 
  via pam_set_item()
to make pam_authenticate work. 

I suggest, 
you go and start a debugger (gdb) to look for what your example program
is 
doing in detail.

Regards, 
Andreas

-- 
Dr.-Ing. Andreas Schindler

PDV Systeme 
AZ1 GmbH
Frankfurter Str. 141
63303 Dreieich

Telefon 
06103-57187-21
Telefax 06103-373245

schindler@xxxxxx
www.az1.de

PDV Systeme AZ1 GmbH, 
Brandeniusstr. 3, 44265 Dortmund
HRB 11089 Amtsgericht Dortmund, 
Geschäftsführer : Klaus-Jürgen Koke, Joachim Carle 
_______________________________________________
Pam-list mailing list
Pam-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/pam-list