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authorDaniel P. Berrange <berrange@redhat.com>2017-02-03 12:06:49 +0000
committerGerd Hoffmann <kraxel@redhat.com>2017-02-09 17:28:49 +0100
commit396f935a9aff3cefd288bdb2b20024fb9dcfa062 (patch)
treee3c0468716027935641540daa71fd4bb389e02fd /ui
parente998e2090fffe8083af381e41dc30a25e22fc28b (diff)
ui: add ability to specify multiple VNC listen addresses
This change allows the listen address and websocket address options for -vnc to be repeated. This causes the VNC server to listen on multiple addresses. e.g. $ $QEMU -vnc vnc=localhost:1,vnc=unix:/tmp/vnc,\ websocket=127.0.0.1:8080,websocket=[::]:8081 results in listening on 127.0.0.1:5901, 127.0.0.1:8080, ::1:5901, :::8081 & /tmp/vnc Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170203120649.15637-9-berrange@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui')
-rw-r--r--ui/vnc.c195
1 files changed, 133 insertions, 62 deletions
diff --git a/ui/vnc.c b/ui/vnc.c
index 5c11c2dbd3..62e85edf5d 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3563,6 +3563,10 @@ static int vnc_display_get_address(const char *addrstr,
if (websocket) {
if (g_str_equal(addrstr, "") ||
g_str_equal(addrstr, "on")) {
+ if (displaynum == -1) {
+ error_setg(errp, "explicit websocket port is required");
+ goto cleanup;
+ }
inet->port = g_strdup_printf(
"%d", displaynum + 5700);
if (to) {
@@ -3609,80 +3613,133 @@ static int vnc_display_get_address(const char *addrstr,
}
static int vnc_display_get_addresses(QemuOpts *opts,
- SocketAddress **retsaddr,
- SocketAddress **retwsaddr,
+ SocketAddress ***retsaddr,
+ size_t *retnsaddr,
+ SocketAddress ***retwsaddr,
+ size_t *retnwsaddr,
Error **errp)
{
SocketAddress *saddr = NULL;
SocketAddress *wsaddr = NULL;
- const char *saddrstr = qemu_opt_get(opts, "vnc");
- const char *wsaddrstr = qemu_opt_get(opts, "websocket");
+ QemuOptsIter addriter;
+ const char *addr;
int to = qemu_opt_get_number(opts, "to", 0);
bool has_ipv4 = qemu_opt_get(opts, "ipv4");
bool has_ipv6 = qemu_opt_get(opts, "ipv6");
bool ipv4 = qemu_opt_get_bool(opts, "ipv4", false);
bool ipv6 = qemu_opt_get_bool(opts, "ipv6", false);
+ size_t i;
+ int displaynum = -1;
+ int ret = -1;
- if (!saddrstr || strcmp(saddrstr, "none") == 0) {
- *retsaddr = NULL;
- *retwsaddr = NULL;
- return 0;
- }
+ *retsaddr = NULL;
+ *retnsaddr = 0;
+ *retwsaddr = NULL;
+ *retnwsaddr = 0;
- if (wsaddrstr &&
+ addr = qemu_opt_get(opts, "vnc");
+ if (addr == NULL || g_str_equal(addr, "none")) {
+ ret = 0;
+ goto cleanup;
+ }
+ if (qemu_opt_get(opts, "websocket") &&
!qcrypto_hash_supports(QCRYPTO_HASH_ALG_SHA1)) {
error_setg(errp,
"SHA1 hash support is required for websockets");
- goto error;
+ goto cleanup;
+ }
+
+ qemu_opt_iter_init(&addriter, opts, "vnc");
+ while ((addr = qemu_opt_iter_next(&addriter)) != NULL) {
+ int rv;
+ rv = vnc_display_get_address(addr, false, 0, to,
+ has_ipv4, has_ipv6,
+ ipv4, ipv6,
+ &saddr, errp);
+ if (rv < 0) {
+ goto cleanup;
+ }
+ /* Historical compat - first listen address can be used
+ * to set the default websocket port
+ */
+ if (displaynum == -1) {
+ displaynum = rv;
+ }
+ *retsaddr = g_renew(SocketAddress *, *retsaddr, *retnsaddr + 1);
+ (*retsaddr)[(*retnsaddr)++] = saddr;
}
- int displaynum = vnc_display_get_address(saddrstr, false, 0, to,
- has_ipv4, has_ipv6,
- ipv4, ipv6,
- &saddr, errp);
- if (displaynum < 0) {
- goto error;
+ /* If we had multiple primary displays, we don't do defaults
+ * for websocket, and require explicit config instead. */
+ if (*retnsaddr > 1) {
+ displaynum = -1;
}
- if (wsaddrstr) {
- if (vnc_display_get_address(wsaddrstr, true, displaynum, to,
+
+ qemu_opt_iter_init(&addriter, opts, "websocket");
+ while ((addr = qemu_opt_iter_next(&addriter)) != NULL) {
+ if (vnc_display_get_address(addr, true, displaynum, to,
has_ipv4, has_ipv6,
ipv4, ipv6,
&wsaddr, errp) < 0) {
- goto error;
+ goto cleanup;
}
- if (saddr->type == SOCKET_ADDRESS_KIND_INET &&
+
+ /* Historical compat - if only a single listen address was
+ * provided, then this is used to set the default listen
+ * address for websocket too
+ */
+ if (*retnsaddr == 1 &&
+ (*retsaddr)[0]->type == SOCKET_ADDRESS_KIND_INET &&
wsaddr->type == SOCKET_ADDRESS_KIND_INET &&
g_str_equal(wsaddr->u.inet.data->host, "") &&
- !g_str_equal(saddr->u.inet.data->host, "")) {
+ !g_str_equal((*retsaddr)[0]->u.inet.data->host, "")) {
g_free(wsaddr->u.inet.data->host);
- wsaddr->u.inet.data->host = g_strdup(saddr->u.inet.data->host);
+ wsaddr->u.inet.data->host =
+ g_strdup((*retsaddr)[0]->u.inet.data->host);
}
+
+ *retwsaddr = g_renew(SocketAddress *, *retwsaddr, *retnwsaddr + 1);
+ (*retwsaddr)[(*retnwsaddr)++] = wsaddr;
}
- *retsaddr = saddr;
- *retwsaddr = wsaddr;
- return 0;
- error:
- qapi_free_SocketAddress(saddr);
- qapi_free_SocketAddress(wsaddr);
- return -1;
+ ret = 0;
+ cleanup:
+ if (ret < 0) {
+ for (i = 0; i < *retnsaddr; i++) {
+ qapi_free_SocketAddress((*retsaddr)[i]);
+ }
+ g_free(*retsaddr);
+ for (i = 0; i < *retnwsaddr; i++) {
+ qapi_free_SocketAddress((*retwsaddr)[i]);
+ }
+ g_free(*retwsaddr);
+ *retsaddr = *retwsaddr = NULL;
+ *retnsaddr = *retnwsaddr = 0;
+ }
+ return ret;
}
static int vnc_display_connect(VncDisplay *vd,
- SocketAddress *saddr,
- SocketAddress *wsaddr,
+ SocketAddress **saddr,
+ size_t nsaddr,
+ SocketAddress **wsaddr,
+ size_t nwsaddr,
Error **errp)
{
/* connect to viewer */
QIOChannelSocket *sioc = NULL;
- if (wsaddr) {
+ if (nwsaddr != 0) {
error_setg(errp, "Cannot use websockets in reverse mode");
return -1;
}
- vd->is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX;
+ if (nsaddr != 1) {
+ error_setg(errp, "Expected a single address in reverse mode");
+ return -1;
+ }
+ vd->is_unix = saddr[0]->type == SOCKET_ADDRESS_KIND_UNIX;
sioc = qio_channel_socket_new();
qio_channel_set_name(QIO_CHANNEL(sioc), "vnc-reverse");
- if (qio_channel_socket_connect_sync(sioc, saddr, errp) < 0) {
+ if (qio_channel_socket_connect_sync(sioc, saddr[0], errp) < 0) {
return -1;
}
vnc_connect(vd, sioc, false, false);
@@ -3703,6 +3760,7 @@ static int vnc_display_listen_addr(VncDisplay *vd,
SocketAddress **rawaddrs = NULL;
size_t nrawaddrs = 0;
Error *listenerr = NULL;
+ bool listening = false;
size_t i;
if (qio_dns_resolver_lookup_sync(resolver, addr, &nrawaddrs,
@@ -3718,6 +3776,7 @@ static int vnc_display_listen_addr(VncDisplay *vd,
sioc, rawaddrs[i], listenerr == NULL ? &listenerr : NULL) < 0) {
continue;
}
+ listening = true;
(*nlsock)++;
*lsock = g_renew(QIOChannelSocket *, *lsock, *nlsock);
*lsock_tag = g_renew(guint, *lsock_tag, *nlsock);
@@ -3732,7 +3791,7 @@ static int vnc_display_listen_addr(VncDisplay *vd,
g_free(rawaddrs);
if (listenerr) {
- if (*nlsock == 0) {
+ if (!listening) {
error_propagate(errp, listenerr);
return -1;
} else {
@@ -3751,28 +3810,33 @@ static int vnc_display_listen_addr(VncDisplay *vd,
static int vnc_display_listen(VncDisplay *vd,
- SocketAddress *saddr,
- SocketAddress *wsaddr,
+ SocketAddress **saddr,
+ size_t nsaddr,
+ SocketAddress **wsaddr,
+ size_t nwsaddr,
Error **errp)
{
- vd->is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX;
+ size_t i;
- if (vnc_display_listen_addr(vd, saddr,
- "vnc-listen",
- &vd->lsock,
- &vd->lsock_tag,
- &vd->nlsock,
- errp) < 0) {
- return -1;
+ for (i = 0; i < nsaddr; i++) {
+ if (vnc_display_listen_addr(vd, saddr[i],
+ "vnc-listen",
+ &vd->lsock,
+ &vd->lsock_tag,
+ &vd->nlsock,
+ errp) < 0) {
+ return -1;
+ }
}
- if (wsaddr &&
- vnc_display_listen_addr(vd, wsaddr,
- "vnc-ws-listen",
- &vd->lwebsock,
- &vd->lwebsock_tag,
- &vd->nlwebsock,
- errp) < 0) {
- return -1;
+ for (i = 0; i < nwsaddr; i++) {
+ if (vnc_display_listen_addr(vd, wsaddr[i],
+ "vnc-ws-listen",
+ &vd->lwebsock,
+ &vd->lwebsock_tag,
+ &vd->nlwebsock,
+ errp) < 0) {
+ return -1;
+ }
}
return 0;
@@ -3783,7 +3847,8 @@ void vnc_display_open(const char *id, Error **errp)
{
VncDisplay *vd = vnc_display_find(id);
QemuOpts *opts = qemu_opts_find(&qemu_vnc_opts, id);
- SocketAddress *saddr = NULL, *wsaddr = NULL;
+ SocketAddress **saddr = NULL, **wsaddr = NULL;
+ size_t nsaddr, nwsaddr;
const char *share, *device_id;
QemuConsole *con;
bool password = false;
@@ -3796,6 +3861,7 @@ void vnc_display_open(const char *id, Error **errp)
int acl = 0;
int lock_key_sync = 1;
int key_delay_ms;
+ size_t i;
if (!vd) {
error_setg(errp, "VNC display not active");
@@ -3807,7 +3873,8 @@ void vnc_display_open(const char *id, Error **errp)
return;
}
- if (vnc_display_get_addresses(opts, &saddr, &wsaddr, errp) < 0) {
+ if (vnc_display_get_addresses(opts, &saddr, &nsaddr,
+ &wsaddr, &nwsaddr, errp) < 0) {
goto fail;
}
@@ -4001,11 +4068,11 @@ void vnc_display_open(const char *id, Error **errp)
}
if (reverse) {
- if (vnc_display_connect(vd, saddr, wsaddr, errp) < 0) {
+ if (vnc_display_connect(vd, saddr, nsaddr, wsaddr, nwsaddr, errp) < 0) {
goto fail;
}
} else {
- if (vnc_display_listen(vd, saddr, wsaddr, errp) < 0) {
+ if (vnc_display_listen(vd, saddr, nsaddr, wsaddr, nwsaddr, errp) < 0) {
goto fail;
}
}
@@ -4014,14 +4081,18 @@ void vnc_display_open(const char *id, Error **errp)
vnc_display_print_local_addr(vd);
}
- qapi_free_SocketAddress(saddr);
- qapi_free_SocketAddress(wsaddr);
+ cleanup:
+ for (i = 0; i < nsaddr; i++) {
+ qapi_free_SocketAddress(saddr[i]);
+ }
+ for (i = 0; i < nwsaddr; i++) {
+ qapi_free_SocketAddress(wsaddr[i]);
+ }
return;
fail:
vnc_display_close(vd);
- qapi_free_SocketAddress(saddr);
- qapi_free_SocketAddress(wsaddr);
+ goto cleanup;
}
void vnc_display_add_client(const char *id, int csock, bool skipauth)