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examples/check_user.c
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Thorsten Kukuk
check_user: use pam_unix.so as example config
20 авг 2025, 15:16
20 авг 2025, 15:16
ac3c4d1
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/* $Id$ This program was contributed by Shane Watts <shane@icarus.bofh.asn.au> slight modifications by AGM. You need to add the following (or equivalent) to the /etc/pam.conf file. # check authorization check auth required pam_unix.so check account required pam_unix.so */ #include <security/pam_appl.h> #include <security/pam_misc.h> #include <stdio.h> static struct pam_conv conv = { misc_conv, NULL }; int main(int argc, char *argv[]) { pam_handle_t *pamh=NULL; int retval; const char *user="nobody"; if(argc == 2) { user = argv[1]; } if(argc > 2) { fprintf(stderr, "Usage: check_user [username]\n"); exit(1); } retval = pam_start("check", user, &conv, &pamh); if (retval == PAM_SUCCESS) retval = pam_authenticate(pamh, 0); /* is user really user? */ if (retval == PAM_SUCCESS) retval = pam_acct_mgmt(pamh, 0); /* permitted access? */ /* This is where we have been authorized or not. */ if (retval == PAM_SUCCESS) { fprintf(stdout, "Authenticated\n"); } else { fprintf(stdout, "Not Authenticated\n"); } if (pam_end(pamh,retval) != PAM_SUCCESS) { /* close Linux-PAM */ pamh = NULL; fprintf(stderr, "check_user: failed to release authenticator\n"); exit(1); } return ( retval == PAM_SUCCESS ? 0:1 ); /* indicate success */ }