From patchwork Tue Jan 22 04:03:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arne Schwabe X-Patchwork-Id: 675 Return-Path: Delivered-To: patchwork@openvpn.net Delivered-To: patchwork@openvpn.net Received: from director9.mail.ord1d.rsapps.net ([172.30.191.6]) by backend30.mail.ord1d.rsapps.net with LMTP id IPWAKBkxR1zYYAAAIUCqbw for ; Tue, 22 Jan 2019 10:04:57 -0500 Received: from proxy5.mail.ord1d.rsapps.net ([172.30.191.6]) by director9.mail.ord1d.rsapps.net with LMTP id APZeKBkxR1xfKgAAalYnBA ; Tue, 22 Jan 2019 10:04:57 -0500 Received: from smtp14.gate.ord1d ([172.30.191.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) by proxy5.mail.ord1d.rsapps.net with LMTP id qGEKKBkxR1wLTAAA8Zzt7w ; Tue, 22 Jan 2019 10:04:57 -0500 X-Spam-Threshold: 95 X-Spam-Score: 0 X-Spam-Flag: NO X-Virus-Scanned: OK X-Orig-To: openvpnslackdevel@openvpn.net X-Originating-Ip: [216.105.38.7] Authentication-Results: smtp14.gate.ord1d.rsapps.net; iprev=pass policy.iprev="216.105.38.7"; spf=pass smtp.mailfrom="openvpn-devel-bounces@lists.sourceforge.net" smtp.helo="lists.sourceforge.net"; dkim=fail (signature verification failed) header.d=sourceforge.net; dkim=fail (signature verification failed) header.d=sf.net; dmarc=none (p=nil; dis=none) header.from=rfc2549.org X-Suspicious-Flag: YES X-Classification-ID: 1440e3bc-1e57-11e9-b1ac-525400504bae-1-1 Received: from [216.105.38.7] ([216.105.38.7:7782] helo=lists.sourceforge.net) by smtp14.gate.ord1d.rsapps.net (envelope-from ) (ecelerity 4.2.38.62370 r(:)) with ESMTPS (cipher=DHE-RSA-AES256-GCM-SHA384) id E8/C4-28775-811374C5; Tue, 22 Jan 2019 10:04:56 -0500 Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.90_1) (envelope-from ) id 1glxao-0005Vc-1t; Tue, 22 Jan 2019 15:03:58 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1glxam-0005VQ-KY for openvpn-devel@lists.sourceforge.NET; Tue, 22 Jan 2019 15:03:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=MnHl3qQZzxrVGAujDex9mDPWExDeNHR0LctL+8NGcB8=; b=a9QuzTHi78HuBuI75bMoTNOpvS IcPmyTu/oJhQPEeyUb3dFDQkZJLoyJoHCI6Z9s6CLRM6JIN4cuZGQK2DWiDbwW+N2QflQvE3KQQNE D+qvVbfaQ957fn8g4zd9/iSEgmCn+ZiF8NG+Y5VGCbWIcZ2FKlgLXxMU1wCumy3DVFSo=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To :MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=MnHl3qQZzxrVGAujDex9mDPWExDeNHR0LctL+8NGcB8=; b=kIxZOiiymerfyuGUcOrfAzfusS NVPqN0FMR72M6JQdOZqStMUseoaTLWyf+is1Vrx4rcBC+NFeXV8AE+0SyfUfc6kiQs7TzL3jT9acz x8tJ2F/vrKOi9XeIy/ZWRejXzAI958SJFXk04y2E4WTB2obRUeh7+fSL+BEE1Ugb3p/E=; Received: from mail.blinkt.de ([192.26.174.232]) by sfi-mx-3.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) id 1glxaW-005NgS-J8 for openvpn-devel@lists.sourceforge.NET; Tue, 22 Jan 2019 15:03:56 +0000 Received: from kamera.blinkt.de ([2001:638:502:390:20c:29ff:fec8:535c]) by mail.blinkt.de with smtp (Exim 4.91 (FreeBSD)) (envelope-from ) id 1glxaP-000IMw-Td; Tue, 22 Jan 2019 16:03:33 +0100 Received: (nullmailer pid 1118 invoked by uid 10006); Tue, 22 Jan 2019 15:03:33 -0000 From: Arne Schwabe To: openvpn-devel@lists.sourceforge.net Date: Tue, 22 Jan 2019 16:03:32 +0100 Message-Id: <20190122150333.1061-5-arne@rfc2549.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190122150333.1061-1-arne@rfc2549.org> References: <20190122150333.1061-1-arne@rfc2549.org> X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different 0.0 TIME_LIMIT_EXCEEDED Exceeded time limit / deadline X-Headers-End: 1glxaW-005NgS-J8 Subject: [Openvpn-devel] [PATCH v2 5/6] Sent indication that a session is expired to clients X-BeenThere: openvpn-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Arne Schwabe MIME-Version: 1.0 Errors-To: openvpn-devel-bounces@lists.sourceforge.net X-getmail-retrieved-from-mailbox: Inbox From: Arne Schwabe This allows OpenVPN 3 core to fall back to the original authentication method. This commit changes man_def_auth_set_client_reason to auth_set_client_reason since it now used in more contexts. Also remove a FIXME about client_reason not being freed, as it is freed in tls_multi_free with auth_set_client_reason(multi, NULL); --- src/openvpn/auth_token.c | 3 +++ src/openvpn/ssl.c | 6 ++---- src/openvpn/ssl_common.h | 10 +++++----- src/openvpn/ssl_verify.c | 8 ++++---- src/openvpn/ssl_verify.h | 15 ++++++++++----- 5 files changed, 24 insertions(+), 18 deletions(-) diff --git a/src/openvpn/auth_token.c b/src/openvpn/auth_token.c index 12bb724a..74a76b72 100644 --- a/src/openvpn/auth_token.c +++ b/src/openvpn/auth_token.c @@ -15,6 +15,7 @@ #include "push.h" #include "integer.h" #include "ssl.h" +#include "ssl_verify.h" const char *auth_token_pem_name = "OpenVPN auth-token server key"; @@ -356,6 +357,8 @@ verify_auth_token(struct user_pass *up, struct tls_multi *multi, if (ret & AUTH_TOKEN_EXPIRED) { + /* Tell client that the session token is expired */ + auth_set_client_reason(multi, "SESSION: token expired"); msg(M_INFO, "--auth-token-gen: auth-token from client expired"); } return ret; diff --git a/src/openvpn/ssl.c b/src/openvpn/ssl.c index fb557e37..52af514f 100644 --- a/src/openvpn/ssl.c +++ b/src/openvpn/ssl.c @@ -1349,11 +1349,9 @@ tls_multi_free(struct tls_multi *multi, bool clear) ASSERT(multi); -#ifdef MANAGEMENT_DEF_AUTH - man_def_auth_set_client_reason(multi, NULL); - -#endif #if P2MP_SERVER + auth_set_client_reason(multi, NULL); + free(multi->peer_info); #endif diff --git a/src/openvpn/ssl_common.h b/src/openvpn/ssl_common.h index ccc01f15..be5a208f 100644 --- a/src/openvpn/ssl_common.h +++ b/src/openvpn/ssl_common.h @@ -525,16 +525,16 @@ struct tls_multi struct cert_hash_set *locked_cert_hash_set; #ifdef ENABLE_DEF_AUTH - /* - * An error message to send to client on AUTH_FAILED - */ - char *client_reason; - /* Time of last call to tls_authentication_status */ time_t tas_last; #endif #if P2MP_SERVER + /* + * An error message to send to client on AUTH_FAILED + */ + char *client_reason; + /* * A multi-line string of general-purpose info received from peer * over control channel. diff --git a/src/openvpn/ssl_verify.c b/src/openvpn/ssl_verify.c index 2ff99853..550dd653 100644 --- a/src/openvpn/ssl_verify.c +++ b/src/openvpn/ssl_verify.c @@ -803,9 +803,8 @@ cleanup: #define ACF_FAILED 3 #endif -#ifdef MANAGEMENT_DEF_AUTH void -man_def_auth_set_client_reason(struct tls_multi *multi, const char *client_reason) +auth_set_client_reason(struct tls_multi* multi, const char* client_reason) { if (multi->client_reason) { @@ -814,11 +813,12 @@ man_def_auth_set_client_reason(struct tls_multi *multi, const char *client_reaso } if (client_reason && strlen(client_reason)) { - /* FIXME: Last alloc will never be freed */ multi->client_reason = string_alloc(client_reason, NULL); } } +#ifdef MANAGEMENT_DEF_AUTH + static inline unsigned int man_def_auth_test(const struct key_state *ks) { @@ -1022,7 +1022,7 @@ tls_authenticate_key(struct tls_multi *multi, const unsigned int mda_key_id, con if (multi) { int i; - man_def_auth_set_client_reason(multi, client_reason); + auth_set_client_reason(multi, client_reason); for (i = 0; i < KEY_SCAN_SIZE; ++i) { struct key_state *ks = multi->key_scan[i]; diff --git a/src/openvpn/ssl_verify.h b/src/openvpn/ssl_verify.h index 64f27efb..c54b89a6 100644 --- a/src/openvpn/ssl_verify.h +++ b/src/openvpn/ssl_verify.h @@ -224,18 +224,23 @@ struct x509_track #ifdef MANAGEMENT_DEF_AUTH bool tls_authenticate_key(struct tls_multi *multi, const unsigned int mda_key_id, const bool auth, const char *client_reason); -void man_def_auth_set_client_reason(struct tls_multi *multi, const char *client_reason); +#endif +#ifdef P2MP_SERVER +/** + * Sets the reason why authentication of a client failed. This be will send to the client + * when the AUTH_FAILED message is sent + * An example would be "SESSION: Token expired" + * @param multi The multi tls struct + * @param client_reason The string to send to the client as part of AUTH_FAILED + */ +void auth_set_client_reason(struct tls_multi* multi, const char* client_reason); #endif static inline const char * tls_client_reason(struct tls_multi *multi) { -#ifdef ENABLE_DEF_AUTH return multi->client_reason; -#else - return NULL; -#endif } /** Remove any X509_ env variables from env_set es */