- (dtucker) [auth.c openbsd-compat/port-aix.c openbsd-compat/port-aix.h]

[openssh.git] / openbsd-compat / port-aix.c

diff --git a/openbsd-compat/port-aix.c b/openbsd-compat/port-aix.c
index 5ba6819ded44cdc46e8aaf92c7de3c2010977e8e..bf7e986523f85476f83b3d3bdf6f8c227e1b1845 100644 (file)
--- a/openbsd-compat/port-aix.c
+++ b/openbsd-compat/port-aix.c
@@ -163,7 +163,51 @@ sys_auth_passwd(Authctxt *ctxt, const char *password)
 
        return authsuccess;
 }
-  
+
+/*
+ * Check if specified account is permitted to log in.
+ * Returns 1 if login is allowed, 0 if not allowed.
+ */
+int
+sys_auth_allowed_user(struct passwd *pw)
+{
+       char *msg = NULL;
+       int result, permitted = 0;
+       struct stat st;
+
+       /*
+        * Don't perform checks for root account (PermitRootLogin controls
+        * logins via * ssh) or if running as non-root user (since
+        * loginrestrictions will always fail due to insufficient privilege).
+        */
+       if (pw->pw_uid == 0 || geteuid() != 0) {
+               debug3("%s: not checking");
+               return 1;
+       }
+
+       result = loginrestrictions(pw->pw_name, S_RLOGIN, NULL, &msg);
+       if (result == 0)
+               permitted = 1;
+       /*
+        * If restricted because /etc/nologin exists, the login will be denied
+        * in session.c after the nologin message is sent, so allow for now
+        * and do not append the returned message.
+        */
+       if (result == -1 && errno == EPERM && stat(_PATH_NOLOGIN, &st) == 0)
+               permitted = 1;
+       else if (msg != NULL)
+               buffer_append(&loginmsg, msg, strlen(msg));
+       if (msg == NULL)
+               msg = xstrdup("(none)");
+       aix_remove_embedded_newlines(msg);
+       debug3("AIX/loginrestrictions returned %d msg %.100s", result, msg);
+
+       if (!permitted)
+               logit("Login restricted for %s: %.100s", pw->pw_name, msg);
+       xfree(msg);
+       return permitted;
+}
+
 #  ifdef CUSTOM_FAILED_LOGIN
 /*
  * record_failed_login: generic "login failed" interface function