- /* We have authenticated the user using .rhosts or /etc/hosts.equiv, and
- the host using RSA. We accept the authentication. */
-
- log("Rhosts with RSA host authentication accepted for %.100s, %.100s on %.700s.",
- pw->pw_name, client_user, canonical_hostname);
- packet_send_debug("Rhosts with RSA host authentication accepted.");
- return 1;
+/*
+ * Tries to authenticate the user using the .rhosts file and the host using
+ * its host key. Returns true if authentication succeeds.
+ */
+int
+auth_rhosts_rsa(struct passwd *pw, char *cuser, Key *client_host_key)
+{
+ char *chost;
+
+ debug("Trying rhosts with RSA host authentication for client user %.100s",
+ cuser);
+
+ if (pw == NULL || client_host_key == NULL ||
+ client_host_key->rsa == NULL)
+ return 0;
+
+ chost = (char *)get_canonical_hostname(options.verify_reverse_mapping);
+ debug("Rhosts RSA authentication: canonical host %.900s", chost);
+
+ if (!PRIVSEP(auth_rhosts_rsa_key_allowed(pw, cuser, chost, client_host_key))) {
+ debug("Rhosts with RSA host authentication denied: unknown or invalid host key");
+ packet_send_debug("Your host key cannot be verified: unknown or invalid host key.");
+ return 0;
+ }
+ /* A matching host key was found and is known. */
+
+ /* Perform the challenge-response dialog with the client for the host key. */
+ if (!auth_rsa_challenge_dialog(client_host_key)) {
+ log("Client on %.800s failed to respond correctly to host authentication.",
+ chost);
+ return 0;
+ }
+ /*
+ * We have authenticated the user using .rhosts or /etc/hosts.equiv,
+ * and the host using RSA. We accept the authentication.
+ */
+
+ verbose("Rhosts with RSA host authentication accepted for %.100s, %.100s on %.700s.",
+ pw->pw_name, cuser, chost);
+ packet_send_debug("Rhosts with RSA host authentication accepted.");
+ return 1;