From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1207BC76196 for ; Fri, 31 Mar 2023 16:33:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230254AbjCaQdy (ORCPT ); Fri, 31 Mar 2023 12:33:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232474AbjCaQdd (ORCPT ); Fri, 31 Mar 2023 12:33:33 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F9862368B for ; Fri, 31 Mar 2023 09:29:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680280144; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+ZSAJKtt/ag5B+38eGABocjAtCkqVzXfR0mPd/YeFX8=; b=f0CVYwAalpfnq/L+j3MZQ8ndUVLkKzbsIQhAAkAD7wsewjHOwnh7Y5MGfLr9/LdnwkbESU hMleCC49+YNOnoIQswdt2snX8+PataUVHJDYNWgKYhxKl1cRup7UNljpVGHnbEsCtZhJAo CUA+pIom4vd3V3KnTkdkkA+UqAwUJdw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-410-FhZ9Z2msPdG2BL3PnIP12g-1; Fri, 31 Mar 2023 12:28:59 -0400 X-MC-Unique: FhZ9Z2msPdG2BL3PnIP12g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7E639885624; Fri, 31 Mar 2023 16:28:58 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8342C40BC797; Fri, 31 Mar 2023 16:28:56 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20230331160914.1608208-30-dhowells@redhat.com> References: <20230331160914.1608208-30-dhowells@redhat.com> <20230331160914.1608208-1-dhowells@redhat.com> To: Chuck Lever III Cc: dhowells@redhat.com, Matthew Wilcox , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Al Viro , Christoph Hellwig , Jens Axboe , Jeff Layton , Christian Brauner , Linus Torvalds , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Boris Pismenny , John Fastabend Subject: Trivial TLS client MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1610448.1680280135.1@warthog.procyon.org.uk> Content-Transfer-Encoding: quoted-printable Date: Fri, 31 Mar 2023 17:28:55 +0100 Message-ID: <1610449.1680280135@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Here's a trivial TLS client program for testing this. David --- /* * TLS-over-TCP send client */ #include #include #include #include #include #include #include #include #include #include #include #define OSERROR(X, Y) do { if ((long)(X) =3D=3D -1) { perror(Y); exit(1); = } } while(0) static unsigned char buffer[4096] __attribute__((aligned(4096))); static void set_tls(int sock) { struct tls12_crypto_info_aes_gcm_128 crypto_info; crypto_info.info.version =3D TLS_1_2_VERSION; crypto_info.info.cipher_type =3D TLS_CIPHER_AES_GCM_128; memset(crypto_info.iv, 0, TLS_CIPHER_AES_GCM_128_IV_SIZE); memset(crypto_info.rec_seq, 0, TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); memset(crypto_info.key, 0, TLS_CIPHER_AES_GCM_128_KEY_SIZE); memset(crypto_info.salt, 0, TLS_CIPHER_AES_GCM_128_SALT_SIZE); OSERROR(setsockopt(sock, SOL_TCP, TCP_ULP, "tls", sizeof("tls")), "TCP_ULP"); OSERROR(setsockopt(sock, SOL_TLS, TLS_TX, &crypto_info, sizeof(crypto_inf= o)), "TLS_TX"); OSERROR(setsockopt(sock, SOL_TLS, TLS_RX, &crypto_info, sizeof(crypto_inf= o)), "TLS_RX"); } int main(int argc, char *argv[]) { struct sockaddr_in sin =3D { .sin_family =3D AF_INET, .sin_port =3D htons= (5556) }; struct hostent *h; struct stat st; ssize_t r, o; int sf =3D 0; int cfd, fd; if (argc > 1 && strcmp(argv[1], "-s") =3D=3D 0) { sf =3D 1; argc--; argv++; } = if (argc !=3D 3) { fprintf(stderr, "tcp-send [-s] \n"); exit(2); } h =3D gethostbyname(argv[1]); if (!h) { fprintf(stderr, "%s: %s\n", argv[1], hstrerror(h_errno)); exit(3); } if (!h->h_addr_list[0]) { fprintf(stderr, "%s: No addresses\n", argv[1]); exit(3); } memcpy(&sin.sin_addr, h->h_addr_list[0], h->h_length); = cfd =3D socket(AF_INET, SOCK_STREAM, 0); OSERROR(cfd, "socket"); OSERROR(connect(cfd, (struct sockaddr *)&sin, sizeof(sin)), "connect"); set_tls(cfd); fd =3D open(argv[2], O_RDONLY); OSERROR(fd, argv[2]); OSERROR(fstat(fd, &st), argv[2]); if (!sf) { for (;;) { r =3D read(fd, buffer, sizeof(buffer)); OSERROR(r, argv[2]); if (r =3D=3D 0) break; o =3D 0; do { ssize_t w =3D write(cfd, buffer + o, r - o); OSERROR(w, "write"); o +=3D w; } while (o < r); } } else { off_t off =3D 0; r =3D sendfile(cfd, fd, &off, st.st_size); OSERROR(r, "sendfile"); if (r !=3D st.st_size) { fprintf(stderr, "Short sendfile\n"); exit(1); } } OSERROR(close(cfd), "close/c"); OSERROR(close(fd), "close/f"); return 0; }