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Old 04-02-2005, 07:52 PM   #1
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Registered: Jan 2005
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PAM obtain user id

I am writing a file transfer server app that uses PAM modules to authenticates users on our network (NIS). What I need to do is somehow obtain the newly authenicated user's userid. The code is to run on a SunOS.

uname -a
SunOS gandalf 5.9 Generic_118558-04 sun4u sparc SUNW,Sun-Fire-88

The only thing that I do with PAM, is to make sure that the user has a valid account on the network. Here is some of the relevant code (no need to show the login_conv() function, it just gets the username/pass over a socket)...
  pam_handle_t *pamh = NULL;
  int retval;
  char *service = "other";

  /* start / authenticate */
  retval = pam_start(service, user, &conv, &pamh);
  if (retval == PAM_SUCCESS) {
    retval = pam_authenticate(pamh, 0);
  } else {
     // failure code

  /* begin processing */
  if (retval == PAM_SUCCESS) {
  } else {
     // failure code

  /* end */
  if (pam_end(pamh, retval) != PAM_SUCCESS) {
    // failure code
I have two questions:
1) Is it possible to obtain a user's id given their username with C?
2) Is it possible for PAM to obtain a user's id once they are authenticated?

I have checked the man pages, and have checked google, but to no avail. Thanks for any help.


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