| 1 | #include <security/pam_appl.h> |
| 2 | #include <security/pam_misc.h> |
| 3 | #include <stdio.h> |
| 4 | |
| 5 | const struct pam_conv conv = { |
| 6 | misc_conv, |
| 7 | NULL |
| 8 | }; |
| 9 | |
| 10 | int main(int argc, char *argv[]) { |
| 11 | pam_handle_t* pamh = NULL; |
| 12 | int retval; |
| 13 | const char* user = "nobody"; |
| 14 | |
| 15 | if(argc != 2) { |
| 16 | printf("Usage: app [username]\n"); |
| 17 | exit(1); |
| 18 | } |
| 19 | |
| 20 | user = argv[1]; |
| 21 | |
| 22 | retval = pam_start("check_user", user, &conv, &pamh); |
| 23 | |
| 24 | // Are the credentials correct? |
| 25 | if (retval == PAM_SUCCESS) { |
| 26 | printf("Credentials accepted.\n"); |
| 27 | retval = pam_authenticate(pamh, 0); |
| 28 | } |
| 29 | |
| 30 | // Can the accound be used at this time? |
| 31 | if (retval == PAM_SUCCESS) { |
| 32 | printf("Account is valid.\n"); |
| 33 | retval = pam_acct_mgmt(pamh, 0); |
| 34 | } |
| 35 | |
| 36 | // Did everything work? |
| 37 | if (retval == PAM_SUCCESS) { |
| 38 | printf("Authenticated\n"); |
| 39 | } else { |
| 40 | printf("Not Authenticated\n"); |
| 41 | } |
| 42 | |
| 43 | // close PAM (end session) |
| 44 | if (pam_end(pamh, retval) != PAM_SUCCESS) { |
| 45 | pamh = NULL; |
| 46 | printf("check_user: failed to release authenticator\n"); |
| 47 | exit(1); |
| 48 | } |
| 49 | |
| 50 | return retval == PAM_SUCCESS ? 0 : 1; |
| 51 | } |