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Prevents pam_lastlog from segfaulting on session close when tty is null.

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MFC after:	1 month
This commit is contained in:
Jonathan Chen 2009-08-30 05:12:37 +00:00
parent 42cb3aa492
commit 43b4dc3625
1 changed files with 5 additions and 0 deletions
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5
lib/libpam/modules/pam_lastlog/pam_lastlog.c
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@ -183,6 +183,11 @@ pam_sm_close_session(pam_handle_t *pamh __unused, int flags __unused,
pam_err = pam_get_item(pamh, PAM_TTY, (const void **)&tty);
if (pam_err != PAM_SUCCESS)
goto err;
if (tty == NULL) {
PAM_LOG("No PAM_TTY");
pam_err = PAM_SERVICE_ERR;
goto err;
}
if (strncmp(tty, _PATH_DEV, strlen(_PATH_DEV)) == 0)
tty = (const char *)tty + strlen(_PATH_DEV);
if (*(const char *)tty == '\0')