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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:18:31 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:42:15 +0300
commit437fd90c0250dee670290f9b714253671a990160 (patch)
treeb871786c360704244a07411c69fb58da9ead4a06 /qemu/ui/vnc-tls.c
parent5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff)
These changes are the raw update to qemu-2.6.
Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/ui/vnc-tls.c')
-rw-r--r--qemu/ui/vnc-tls.c474
1 files changed, 0 insertions, 474 deletions
diff --git a/qemu/ui/vnc-tls.c b/qemu/ui/vnc-tls.c
deleted file mode 100644
index 028fc4db1..000000000
--- a/qemu/ui/vnc-tls.c
+++ /dev/null
@@ -1,474 +0,0 @@
-/*
- * QEMU VNC display driver: TLS helpers
- *
- * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
- * Copyright (C) 2006 Fabrice Bellard
- * Copyright (C) 2009 Red Hat, Inc
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu-x509.h"
-#include "vnc.h"
-#include "qemu/sockets.h"
-
-#if defined(_VNC_DEBUG) && _VNC_DEBUG >= 2
-/* Very verbose, so only enabled for _VNC_DEBUG >= 2 */
-static void vnc_debug_gnutls_log(int level, const char* str) {
- VNC_DEBUG("%d %s", level, str);
-}
-#endif /* defined(_VNC_DEBUG) && _VNC_DEBUG >= 2 */
-
-
-#define DH_BITS 1024
-static gnutls_dh_params_t dh_params;
-
-static int vnc_tls_initialize(void)
-{
- static int tlsinitialized = 0;
-
- if (tlsinitialized)
- return 1;
-
- if (gnutls_global_init () < 0)
- return 0;
-
- /* XXX ought to re-generate diffie-hellman params periodically */
- if (gnutls_dh_params_init (&dh_params) < 0)
- return 0;
- if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0)
- return 0;
-
-#if defined(_VNC_DEBUG) && _VNC_DEBUG >= 2
- gnutls_global_set_log_level(10);
- gnutls_global_set_log_function(vnc_debug_gnutls_log);
-#endif
-
- tlsinitialized = 1;
-
- return 1;
-}
-
-static ssize_t vnc_tls_push(gnutls_transport_ptr_t transport,
- const void *data,
- size_t len) {
- VncState *vs = (VncState *)transport;
- int ret;
-
- retry:
- ret = send(vs->csock, data, len, 0);
- if (ret < 0) {
- if (errno == EINTR)
- goto retry;
- return -1;
- }
- return ret;
-}
-
-
-static ssize_t vnc_tls_pull(gnutls_transport_ptr_t transport,
- void *data,
- size_t len) {
- VncState *vs = (VncState *)transport;
- int ret;
-
- retry:
- ret = qemu_recv(vs->csock, data, len, 0);
- if (ret < 0) {
- if (errno == EINTR)
- goto retry;
- return -1;
- }
- return ret;
-}
-
-
-static gnutls_anon_server_credentials_t vnc_tls_initialize_anon_cred(void)
-{
- gnutls_anon_server_credentials_t anon_cred;
- int ret;
-
- if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) {
- VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
- return NULL;
- }
-
- gnutls_anon_set_server_dh_params(anon_cred, dh_params);
-
- return anon_cred;
-}
-
-
-static gnutls_certificate_credentials_t vnc_tls_initialize_x509_cred(VncDisplay *vd)
-{
- gnutls_certificate_credentials_t x509_cred;
- int ret;
-
- if (!vd->tls.x509cacert) {
- VNC_DEBUG("No CA x509 certificate specified\n");
- return NULL;
- }
- if (!vd->tls.x509cert) {
- VNC_DEBUG("No server x509 certificate specified\n");
- return NULL;
- }
- if (!vd->tls.x509key) {
- VNC_DEBUG("No server private key specified\n");
- return NULL;
- }
-
- if ((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0) {
- VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
- return NULL;
- }
- if ((ret = gnutls_certificate_set_x509_trust_file(x509_cred,
- vd->tls.x509cacert,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load CA certificate %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
-
- if ((ret = gnutls_certificate_set_x509_key_file (x509_cred,
- vd->tls.x509cert,
- vd->tls.x509key,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load certificate & key %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
-
- if (vd->tls.x509cacrl) {
- if ((ret = gnutls_certificate_set_x509_crl_file(x509_cred,
- vd->tls.x509cacrl,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load CRL %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
- }
-
- gnutls_certificate_set_dh_params (x509_cred, dh_params);
-
- return x509_cred;
-}
-
-
-int vnc_tls_validate_certificate(VncState *vs)
-{
- int ret;
- unsigned int status;
- const gnutls_datum_t *certs;
- unsigned int nCerts, i;
- time_t now;
-
- VNC_DEBUG("Validating client certificate\n");
- if ((ret = gnutls_certificate_verify_peers2 (vs->tls.session, &status)) < 0) {
- VNC_DEBUG("Verify failed %s\n", gnutls_strerror(ret));
- return -1;
- }
-
- if ((now = time(NULL)) == ((time_t)-1)) {
- return -1;
- }
-
- if (status != 0) {
- if (status & GNUTLS_CERT_INVALID)
- VNC_DEBUG("The certificate is not trusted.\n");
-
- if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
- VNC_DEBUG("The certificate hasn't got a known issuer.\n");
-
- if (status & GNUTLS_CERT_REVOKED)
- VNC_DEBUG("The certificate has been revoked.\n");
-
- if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
- VNC_DEBUG("The certificate uses an insecure algorithm\n");
-
- return -1;
- } else {
- VNC_DEBUG("Certificate is valid!\n");
- }
-
- /* Only support x509 for now */
- if (gnutls_certificate_type_get(vs->tls.session) != GNUTLS_CRT_X509)
- return -1;
-
- if (!(certs = gnutls_certificate_get_peers(vs->tls.session, &nCerts)))
- return -1;
-
- for (i = 0 ; i < nCerts ; i++) {
- gnutls_x509_crt_t cert;
- VNC_DEBUG ("Checking certificate chain %d\n", i);
- if (gnutls_x509_crt_init (&cert) < 0)
- return -1;
-
- if (gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER) < 0) {
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_expiration_time (cert) < now) {
- VNC_DEBUG("The certificate has expired\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_activation_time (cert) > now) {
- VNC_DEBUG("The certificate is not yet activated\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_activation_time (cert) > now) {
- VNC_DEBUG("The certificate is not yet activated\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (i == 0) {
- size_t dnameSize = 1024;
- vs->tls.dname = g_malloc(dnameSize);
- requery:
- if ((ret = gnutls_x509_crt_get_dn (cert, vs->tls.dname, &dnameSize)) != 0) {
- if (ret == GNUTLS_E_SHORT_MEMORY_BUFFER) {
- vs->tls.dname = g_realloc(vs->tls.dname, dnameSize);
- goto requery;
- }
- gnutls_x509_crt_deinit (cert);
- VNC_DEBUG("Cannot get client distinguished name: %s",
- gnutls_strerror (ret));
- return -1;
- }
-
- if (vs->vd->tls.x509verify) {
- int allow;
- if (!vs->vd->tls.acl) {
- VNC_DEBUG("no ACL activated, allowing access");
- gnutls_x509_crt_deinit (cert);
- continue;
- }
-
- allow = qemu_acl_party_is_allowed(vs->vd->tls.acl,
- vs->tls.dname);
-
- VNC_DEBUG("TLS x509 ACL check for %s is %s\n",
- vs->tls.dname, allow ? "allowed" : "denied");
- if (!allow) {
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
- }
- }
-
- gnutls_x509_crt_deinit (cert);
- }
-
- return 0;
-}
-
-#if defined(GNUTLS_VERSION_NUMBER) && \
- GNUTLS_VERSION_NUMBER >= 0x020200 /* 2.2.0 */
-
-static int vnc_set_gnutls_priority(gnutls_session_t s, int x509)
-{
- const char *priority = x509 ? "NORMAL" : "NORMAL:+ANON-DH";
- int rc;
-
- rc = gnutls_priority_set_direct(s, priority, NULL);
- if (rc != GNUTLS_E_SUCCESS) {
- return -1;
- }
- return 0;
-}
-
-#else
-
-static int vnc_set_gnutls_priority(gnutls_session_t s, int x509)
-{
- static const int cert_types[] = { GNUTLS_CRT_X509, 0 };
- static const int protocols[] = {
- GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0
- };
- static const int kx_anon[] = { GNUTLS_KX_ANON_DH, 0 };
- static const int kx_x509[] = {
- GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA,
- GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0
- };
- int rc;
-
- rc = gnutls_kx_set_priority(s, x509 ? kx_x509 : kx_anon);
- if (rc != GNUTLS_E_SUCCESS) {
- return -1;
- }
-
- rc = gnutls_certificate_type_set_priority(s, cert_types);
- if (rc != GNUTLS_E_SUCCESS) {
- return -1;
- }
-
- rc = gnutls_protocol_set_priority(s, protocols);
- if (rc != GNUTLS_E_SUCCESS) {
- return -1;
- }
- return 0;
-}
-
-#endif
-
-int vnc_tls_client_setup(VncState *vs,
- int needX509Creds) {
- VNC_DEBUG("Do TLS setup\n");
- if (vnc_tls_initialize() < 0) {
- VNC_DEBUG("Failed to init TLS\n");
- vnc_client_error(vs);
- return -1;
- }
- if (vs->tls.session == NULL) {
- if (gnutls_init(&vs->tls.session, GNUTLS_SERVER) < 0) {
- vnc_client_error(vs);
- return -1;
- }
-
- if (gnutls_set_default_priority(vs->tls.session) < 0) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (vnc_set_gnutls_priority(vs->tls.session, needX509Creds) < 0) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (needX509Creds) {
- gnutls_certificate_server_credentials x509_cred =
- vnc_tls_initialize_x509_cred(vs->vd);
- if (!x509_cred) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- vnc_client_error(vs);
- return -1;
- }
- if (gnutls_credentials_set(vs->tls.session,
- GNUTLS_CRD_CERTIFICATE, x509_cred) < 0) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- gnutls_certificate_free_credentials(x509_cred);
- vnc_client_error(vs);
- return -1;
- }
- if (vs->vd->tls.x509verify) {
- VNC_DEBUG("Requesting a client certificate\n");
- gnutls_certificate_server_set_request(vs->tls.session,
- GNUTLS_CERT_REQUEST);
- }
-
- } else {
- gnutls_anon_server_credentials_t anon_cred =
- vnc_tls_initialize_anon_cred();
- if (!anon_cred) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- vnc_client_error(vs);
- return -1;
- }
- if (gnutls_credentials_set(vs->tls.session,
- GNUTLS_CRD_ANON, anon_cred) < 0) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- gnutls_anon_free_server_credentials(anon_cred);
- vnc_client_error(vs);
- return -1;
- }
- }
-
- gnutls_transport_set_ptr(vs->tls.session, (gnutls_transport_ptr_t)vs);
- gnutls_transport_set_push_function(vs->tls.session, vnc_tls_push);
- gnutls_transport_set_pull_function(vs->tls.session, vnc_tls_pull);
- }
- return 0;
-}
-
-
-void vnc_tls_client_cleanup(VncState *vs)
-{
- if (vs->tls.session) {
- gnutls_deinit(vs->tls.session);
- vs->tls.session = NULL;
- }
- g_free(vs->tls.dname);
-}
-
-
-
-static int vnc_set_x509_credential(VncDisplay *vd,
- const char *certdir,
- const char *filename,
- char **cred,
- int ignoreMissing)
-{
- struct stat sb;
-
- g_free(*cred);
- *cred = g_malloc(strlen(certdir) + strlen(filename) + 2);
-
- strcpy(*cred, certdir);
- strcat(*cred, "/");
- strcat(*cred, filename);
-
- VNC_DEBUG("Check %s\n", *cred);
- if (stat(*cred, &sb) < 0) {
- g_free(*cred);
- *cred = NULL;
- if (ignoreMissing && errno == ENOENT)
- return 0;
- return -1;
- }
-
- return 0;
-}
-
-
-int vnc_tls_set_x509_creds_dir(VncDisplay *vd,
- const char *certdir)
-{
- if (vnc_set_x509_credential(vd, certdir, X509_CA_CERT_FILE, &vd->tls.x509cacert, 0) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vd, certdir, X509_CA_CRL_FILE, &vd->tls.x509cacrl, 1) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vd, certdir, X509_SERVER_CERT_FILE, &vd->tls.x509cert, 0) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vd, certdir, X509_SERVER_KEY_FILE, &vd->tls.x509key, 0) < 0)
- goto cleanup;
-
- return 0;
-
- cleanup:
- g_free(vd->tls.x509cacert);
- g_free(vd->tls.x509cacrl);
- g_free(vd->tls.x509cert);
- g_free(vd->tls.x509key);
- vd->tls.x509cacert = vd->tls.x509cacrl = vd->tls.x509cert = vd->tls.x509key = NULL;
- return -1;
-}
-