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d=redhat.com; s=mimecast20190719; t=1615463043; h=from:from:sender:sender: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:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=HyNnSGpWs1YcGmInWKR02o8cm01G1i69aVtutTTDYHY=; b=IqlNrKRG71nOTiDyb55v8IbbLiFr0Wtp8ql6oevJQus4I/xkHBncmohbs6jtWIUgAxTatc zHd537ehT+cznEgcbXWEfDbhmN64+/plEMsFbdTuIvmLNiQT0t8vXqQx0vY+gtfsOrdsVW //VTPmaxO3P+fvS5kL0EX+brpWYSxjg= X-MC-Unique: yXsKYhRbM5qf5jtFWSKH0g-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v2 1/3] ui: introduce "password-secret" option for VNC servers Date: Thu, 11 Mar 2021 11:43:41 +0000 Message-Id: <20210311114343.439820-2-berrange@redhat.com> In-Reply-To: <20210311114343.439820-1-berrange@redhat.com> References: <20210311114343.439820-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-loop: libvir-list@redhat.com Cc: libvir-list@redhat.com, Gerd Hoffmann , "Dr. David Alan Gilbert" X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=libvir-list-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) Currently when using VNC the "password" flag turns on password based authentication. The actual password has to be provided separately via the monitor. This introduces a "password-secret" option which lets the password be provided up front. $QEMU --object secret,id=3Dvncsec0,file=3Dpasswd.txt \ --vnc localhost:0,password-secret=3Dvncsec0 Signed-off-by: Daniel P. Berrang=C3=A9 --- qemu-options.hx | 5 +++++ ui/vnc.c | 23 ++++++++++++++++++++++- 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/qemu-options.hx b/qemu-options.hx index 90801286c6..722d56eab3 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2165,6 +2165,11 @@ SRST time to allow password to expire immediately or never expire. =20 + ``password-secret=3D`` + Require that password based authentication is used for client + connections, using the password provided by the ``secret`` + object identified by ``secret-id``. + ``tls-creds=3DID`` Provides the ID of a set of TLS credentials to use to secure the VNC server. They will apply to both the normal VNC server socket diff --git a/ui/vnc.c b/ui/vnc.c index 310abc9378..e8e3426a65 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -48,6 +48,7 @@ #include "crypto/tlscredsanon.h" #include "crypto/tlscredsx509.h" #include "crypto/random.h" +#include "crypto/secret_common.h" #include "qom/object_interfaces.h" #include "qemu/cutils.h" #include "qemu/help_option.h" @@ -3459,6 +3460,9 @@ static QemuOptsList qemu_vnc_opts =3D { },{ .name =3D "password", .type =3D QEMU_OPT_BOOL, + },{ + .name =3D "password-secret", + .type =3D QEMU_OPT_STRING, },{ .name =3D "reverse", .type =3D QEMU_OPT_BOOL, @@ -3931,6 +3935,7 @@ void vnc_display_open(const char *id, Error **errp) int lock_key_sync =3D 1; int key_delay_ms; const char *audiodev; + const char *passwordSecret; =20 if (!vd) { error_setg(errp, "VNC display not active"); @@ -3948,7 +3953,23 @@ void vnc_display_open(const char *id, Error **errp) goto fail; } =20 - password =3D qemu_opt_get_bool(opts, "password", false); + + passwordSecret =3D qemu_opt_get(opts, "password-secret"); + if (passwordSecret) { + if (qemu_opt_get(opts, "password")) { + error_setg(errp, + "'password' flag is redundant with 'password-secret= '"); + goto fail; + } + vd->password =3D qcrypto_secret_lookup_as_utf8(passwordSecret, + errp); + if (!vd->password) { + goto fail; + } + password =3D true; + } else { + password =3D qemu_opt_get_bool(opts, "password", false); + } if (password) { if (fips_get_state()) { error_setg(errp, --=20 2.29.2