mirror of https://github.com/proxmox/mirror_qemu
3104 lines
89 KiB
C
3104 lines
89 KiB
C
/*
|
|
* QEMU VNC display driver
|
|
*
|
|
* 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 "vnc.h"
|
|
#include "vnc-jobs.h"
|
|
#include "sysemu.h"
|
|
#include "qemu_socket.h"
|
|
#include "qemu-timer.h"
|
|
#include "acl.h"
|
|
#include "qemu-objects.h"
|
|
#include "qmp-commands.h"
|
|
#include "osdep.h"
|
|
|
|
#define VNC_REFRESH_INTERVAL_BASE 30
|
|
#define VNC_REFRESH_INTERVAL_INC 50
|
|
#define VNC_REFRESH_INTERVAL_MAX 2000
|
|
static const struct timeval VNC_REFRESH_STATS = { 0, 500000 };
|
|
static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 };
|
|
|
|
#include "vnc_keysym.h"
|
|
#include "d3des.h"
|
|
|
|
static VncDisplay *vnc_display; /* needed for info vnc */
|
|
static DisplayChangeListener *dcl;
|
|
|
|
static int vnc_cursor_define(VncState *vs);
|
|
static void vnc_release_modifiers(VncState *vs);
|
|
|
|
static void vnc_set_share_mode(VncState *vs, VncShareMode mode)
|
|
{
|
|
#ifdef _VNC_DEBUG
|
|
static const char *mn[] = {
|
|
[0] = "undefined",
|
|
[VNC_SHARE_MODE_CONNECTING] = "connecting",
|
|
[VNC_SHARE_MODE_SHARED] = "shared",
|
|
[VNC_SHARE_MODE_EXCLUSIVE] = "exclusive",
|
|
[VNC_SHARE_MODE_DISCONNECTED] = "disconnected",
|
|
};
|
|
fprintf(stderr, "%s/%d: %s -> %s\n", __func__,
|
|
vs->csock, mn[vs->share_mode], mn[mode]);
|
|
#endif
|
|
|
|
if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
|
vs->vd->num_exclusive--;
|
|
}
|
|
vs->share_mode = mode;
|
|
if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
|
vs->vd->num_exclusive++;
|
|
}
|
|
}
|
|
|
|
static char *addr_to_string(const char *format,
|
|
struct sockaddr_storage *sa,
|
|
socklen_t salen) {
|
|
char *addr;
|
|
char host[NI_MAXHOST];
|
|
char serv[NI_MAXSERV];
|
|
int err;
|
|
size_t addrlen;
|
|
|
|
if ((err = getnameinfo((struct sockaddr *)sa, salen,
|
|
host, sizeof(host),
|
|
serv, sizeof(serv),
|
|
NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
|
|
VNC_DEBUG("Cannot resolve address %d: %s\n",
|
|
err, gai_strerror(err));
|
|
return NULL;
|
|
}
|
|
|
|
/* Enough for the existing format + the 2 vars we're
|
|
* substituting in. */
|
|
addrlen = strlen(format) + strlen(host) + strlen(serv);
|
|
addr = g_malloc(addrlen + 1);
|
|
snprintf(addr, addrlen, format, host, serv);
|
|
addr[addrlen] = '\0';
|
|
|
|
return addr;
|
|
}
|
|
|
|
|
|
char *vnc_socket_local_addr(const char *format, int fd) {
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen;
|
|
|
|
salen = sizeof(sa);
|
|
if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0)
|
|
return NULL;
|
|
|
|
return addr_to_string(format, &sa, salen);
|
|
}
|
|
|
|
char *vnc_socket_remote_addr(const char *format, int fd) {
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen;
|
|
|
|
salen = sizeof(sa);
|
|
if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0)
|
|
return NULL;
|
|
|
|
return addr_to_string(format, &sa, salen);
|
|
}
|
|
|
|
static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa,
|
|
socklen_t salen)
|
|
{
|
|
char host[NI_MAXHOST];
|
|
char serv[NI_MAXSERV];
|
|
int err;
|
|
|
|
if ((err = getnameinfo((struct sockaddr *)sa, salen,
|
|
host, sizeof(host),
|
|
serv, sizeof(serv),
|
|
NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
|
|
VNC_DEBUG("Cannot resolve address %d: %s\n",
|
|
err, gai_strerror(err));
|
|
return -1;
|
|
}
|
|
|
|
qdict_put(qdict, "host", qstring_from_str(host));
|
|
qdict_put(qdict, "service", qstring_from_str(serv));
|
|
qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vnc_server_addr_put(QDict *qdict, int fd)
|
|
{
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen;
|
|
|
|
salen = sizeof(sa);
|
|
if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return put_addr_qdict(qdict, &sa, salen);
|
|
}
|
|
|
|
static int vnc_qdict_remote_addr(QDict *qdict, int fd)
|
|
{
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen;
|
|
|
|
salen = sizeof(sa);
|
|
if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return put_addr_qdict(qdict, &sa, salen);
|
|
}
|
|
|
|
static const char *vnc_auth_name(VncDisplay *vd) {
|
|
switch (vd->auth) {
|
|
case VNC_AUTH_INVALID:
|
|
return "invalid";
|
|
case VNC_AUTH_NONE:
|
|
return "none";
|
|
case VNC_AUTH_VNC:
|
|
return "vnc";
|
|
case VNC_AUTH_RA2:
|
|
return "ra2";
|
|
case VNC_AUTH_RA2NE:
|
|
return "ra2ne";
|
|
case VNC_AUTH_TIGHT:
|
|
return "tight";
|
|
case VNC_AUTH_ULTRA:
|
|
return "ultra";
|
|
case VNC_AUTH_TLS:
|
|
return "tls";
|
|
case VNC_AUTH_VENCRYPT:
|
|
#ifdef CONFIG_VNC_TLS
|
|
switch (vd->subauth) {
|
|
case VNC_AUTH_VENCRYPT_PLAIN:
|
|
return "vencrypt+plain";
|
|
case VNC_AUTH_VENCRYPT_TLSNONE:
|
|
return "vencrypt+tls+none";
|
|
case VNC_AUTH_VENCRYPT_TLSVNC:
|
|
return "vencrypt+tls+vnc";
|
|
case VNC_AUTH_VENCRYPT_TLSPLAIN:
|
|
return "vencrypt+tls+plain";
|
|
case VNC_AUTH_VENCRYPT_X509NONE:
|
|
return "vencrypt+x509+none";
|
|
case VNC_AUTH_VENCRYPT_X509VNC:
|
|
return "vencrypt+x509+vnc";
|
|
case VNC_AUTH_VENCRYPT_X509PLAIN:
|
|
return "vencrypt+x509+plain";
|
|
case VNC_AUTH_VENCRYPT_TLSSASL:
|
|
return "vencrypt+tls+sasl";
|
|
case VNC_AUTH_VENCRYPT_X509SASL:
|
|
return "vencrypt+x509+sasl";
|
|
default:
|
|
return "vencrypt";
|
|
}
|
|
#else
|
|
return "vencrypt";
|
|
#endif
|
|
case VNC_AUTH_SASL:
|
|
return "sasl";
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
static int vnc_server_info_put(QDict *qdict)
|
|
{
|
|
if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
|
|
return 0;
|
|
}
|
|
|
|
static void vnc_client_cache_auth(VncState *client)
|
|
{
|
|
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
|
QDict *qdict;
|
|
#endif
|
|
|
|
if (!client->info) {
|
|
return;
|
|
}
|
|
|
|
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
|
qdict = qobject_to_qdict(client->info);
|
|
#endif
|
|
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (client->tls.session &&
|
|
client->tls.dname) {
|
|
qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_VNC_SASL
|
|
if (client->sasl.conn &&
|
|
client->sasl.username) {
|
|
qdict_put(qdict, "sasl_username",
|
|
qstring_from_str(client->sasl.username));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void vnc_client_cache_addr(VncState *client)
|
|
{
|
|
QDict *qdict;
|
|
|
|
qdict = qdict_new();
|
|
if (vnc_qdict_remote_addr(qdict, client->csock) < 0) {
|
|
QDECREF(qdict);
|
|
/* XXX: how to report the error? */
|
|
return;
|
|
}
|
|
|
|
client->info = QOBJECT(qdict);
|
|
}
|
|
|
|
static void vnc_qmp_event(VncState *vs, MonitorEvent event)
|
|
{
|
|
QDict *server;
|
|
QObject *data;
|
|
|
|
if (!vs->info) {
|
|
return;
|
|
}
|
|
|
|
server = qdict_new();
|
|
if (vnc_server_info_put(server) < 0) {
|
|
QDECREF(server);
|
|
return;
|
|
}
|
|
|
|
data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
|
|
vs->info, QOBJECT(server));
|
|
|
|
monitor_protocol_event(event, data);
|
|
|
|
qobject_incref(vs->info);
|
|
qobject_decref(data);
|
|
}
|
|
|
|
static VncClientInfo *qmp_query_vnc_client(const VncState *client)
|
|
{
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen = sizeof(sa);
|
|
char host[NI_MAXHOST];
|
|
char serv[NI_MAXSERV];
|
|
VncClientInfo *info;
|
|
|
|
if (getpeername(client->csock, (struct sockaddr *)&sa, &salen) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if (getnameinfo((struct sockaddr *)&sa, salen,
|
|
host, sizeof(host),
|
|
serv, sizeof(serv),
|
|
NI_NUMERICHOST | NI_NUMERICSERV) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
info = g_malloc0(sizeof(*info));
|
|
info->host = g_strdup(host);
|
|
info->service = g_strdup(serv);
|
|
info->family = g_strdup(inet_strfamily(sa.ss_family));
|
|
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (client->tls.session && client->tls.dname) {
|
|
info->has_x509_dname = true;
|
|
info->x509_dname = g_strdup(client->tls.dname);
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_VNC_SASL
|
|
if (client->sasl.conn && client->sasl.username) {
|
|
info->has_sasl_username = true;
|
|
info->sasl_username = g_strdup(client->sasl.username);
|
|
}
|
|
#endif
|
|
|
|
return info;
|
|
}
|
|
|
|
VncInfo *qmp_query_vnc(Error **errp)
|
|
{
|
|
VncInfo *info = g_malloc0(sizeof(*info));
|
|
|
|
if (vnc_display == NULL || vnc_display->display == NULL) {
|
|
info->enabled = false;
|
|
} else {
|
|
VncClientInfoList *cur_item = NULL;
|
|
struct sockaddr_storage sa;
|
|
socklen_t salen = sizeof(sa);
|
|
char host[NI_MAXHOST];
|
|
char serv[NI_MAXSERV];
|
|
VncState *client;
|
|
|
|
info->enabled = true;
|
|
|
|
/* for compatibility with the original command */
|
|
info->has_clients = true;
|
|
|
|
QTAILQ_FOREACH(client, &vnc_display->clients, next) {
|
|
VncClientInfoList *cinfo = g_malloc0(sizeof(*info));
|
|
cinfo->value = qmp_query_vnc_client(client);
|
|
|
|
/* XXX: waiting for the qapi to support GSList */
|
|
if (!cur_item) {
|
|
info->clients = cur_item = cinfo;
|
|
} else {
|
|
cur_item->next = cinfo;
|
|
cur_item = cinfo;
|
|
}
|
|
}
|
|
|
|
if (getsockname(vnc_display->lsock, (struct sockaddr *)&sa,
|
|
&salen) == -1) {
|
|
error_set(errp, QERR_UNDEFINED_ERROR);
|
|
goto out_error;
|
|
}
|
|
|
|
if (getnameinfo((struct sockaddr *)&sa, salen,
|
|
host, sizeof(host),
|
|
serv, sizeof(serv),
|
|
NI_NUMERICHOST | NI_NUMERICSERV) < 0) {
|
|
error_set(errp, QERR_UNDEFINED_ERROR);
|
|
goto out_error;
|
|
}
|
|
|
|
info->has_host = true;
|
|
info->host = g_strdup(host);
|
|
|
|
info->has_service = true;
|
|
info->service = g_strdup(serv);
|
|
|
|
info->has_family = true;
|
|
info->family = g_strdup(inet_strfamily(sa.ss_family));
|
|
|
|
info->has_auth = true;
|
|
info->auth = g_strdup(vnc_auth_name(vnc_display));
|
|
}
|
|
|
|
return info;
|
|
|
|
out_error:
|
|
qapi_free_VncInfo(info);
|
|
return NULL;
|
|
}
|
|
|
|
/* TODO
|
|
1) Get the queue working for IO.
|
|
2) there is some weirdness when using the -S option (the screen is grey
|
|
and not totally invalidated
|
|
3) resolutions > 1024
|
|
*/
|
|
|
|
static int vnc_update_client(VncState *vs, int has_dirty);
|
|
static int vnc_update_client_sync(VncState *vs, int has_dirty);
|
|
static void vnc_disconnect_start(VncState *vs);
|
|
static void vnc_disconnect_finish(VncState *vs);
|
|
static void vnc_init_timer(VncDisplay *vd);
|
|
static void vnc_remove_timer(VncDisplay *vd);
|
|
|
|
static void vnc_colordepth(VncState *vs);
|
|
static void framebuffer_update_request(VncState *vs, int incremental,
|
|
int x_position, int y_position,
|
|
int w, int h);
|
|
static void vnc_refresh(void *opaque);
|
|
static int vnc_refresh_server_surface(VncDisplay *vd);
|
|
|
|
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
|
|
{
|
|
int i;
|
|
VncDisplay *vd = ds->opaque;
|
|
struct VncSurface *s = &vd->guest;
|
|
|
|
h += y;
|
|
|
|
/* round x down to ensure the loop only spans one 16-pixel block per,
|
|
iteration. otherwise, if (x % 16) != 0, the last iteration may span
|
|
two 16-pixel blocks but we only mark the first as dirty
|
|
*/
|
|
w += (x % 16);
|
|
x -= (x % 16);
|
|
|
|
x = MIN(x, s->ds->width);
|
|
y = MIN(y, s->ds->height);
|
|
w = MIN(x + w, s->ds->width) - x;
|
|
h = MIN(h, s->ds->height);
|
|
|
|
for (; y < h; y++)
|
|
for (i = 0; i < w; i += 16)
|
|
set_bit((x + i) / 16, s->dirty[y]);
|
|
}
|
|
|
|
void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
|
|
int32_t encoding)
|
|
{
|
|
vnc_write_u16(vs, x);
|
|
vnc_write_u16(vs, y);
|
|
vnc_write_u16(vs, w);
|
|
vnc_write_u16(vs, h);
|
|
|
|
vnc_write_s32(vs, encoding);
|
|
}
|
|
|
|
void buffer_reserve(Buffer *buffer, size_t len)
|
|
{
|
|
if ((buffer->capacity - buffer->offset) < len) {
|
|
buffer->capacity += (len + 1024);
|
|
buffer->buffer = g_realloc(buffer->buffer, buffer->capacity);
|
|
if (buffer->buffer == NULL) {
|
|
fprintf(stderr, "vnc: out of memory\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
int buffer_empty(Buffer *buffer)
|
|
{
|
|
return buffer->offset == 0;
|
|
}
|
|
|
|
uint8_t *buffer_end(Buffer *buffer)
|
|
{
|
|
return buffer->buffer + buffer->offset;
|
|
}
|
|
|
|
void buffer_reset(Buffer *buffer)
|
|
{
|
|
buffer->offset = 0;
|
|
}
|
|
|
|
void buffer_free(Buffer *buffer)
|
|
{
|
|
g_free(buffer->buffer);
|
|
buffer->offset = 0;
|
|
buffer->capacity = 0;
|
|
buffer->buffer = NULL;
|
|
}
|
|
|
|
void buffer_append(Buffer *buffer, const void *data, size_t len)
|
|
{
|
|
memcpy(buffer->buffer + buffer->offset, data, len);
|
|
buffer->offset += len;
|
|
}
|
|
|
|
static void vnc_desktop_resize(VncState *vs)
|
|
{
|
|
DisplayState *ds = vs->ds;
|
|
|
|
if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
|
|
return;
|
|
}
|
|
if (vs->client_width == ds_get_width(ds) &&
|
|
vs->client_height == ds_get_height(ds)) {
|
|
return;
|
|
}
|
|
vs->client_width = ds_get_width(ds);
|
|
vs->client_height = ds_get_height(ds);
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1); /* number of rects */
|
|
vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height,
|
|
VNC_ENCODING_DESKTOPRESIZE);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
static void vnc_abort_display_jobs(VncDisplay *vd)
|
|
{
|
|
VncState *vs;
|
|
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
vnc_lock_output(vs);
|
|
vs->abort = true;
|
|
vnc_unlock_output(vs);
|
|
}
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
vnc_jobs_join(vs);
|
|
}
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
vnc_lock_output(vs);
|
|
vs->abort = false;
|
|
vnc_unlock_output(vs);
|
|
}
|
|
}
|
|
|
|
static void vnc_dpy_resize(DisplayState *ds)
|
|
{
|
|
VncDisplay *vd = ds->opaque;
|
|
VncState *vs;
|
|
|
|
vnc_abort_display_jobs(vd);
|
|
|
|
/* server surface */
|
|
if (!vd->server)
|
|
vd->server = g_malloc0(sizeof(*vd->server));
|
|
if (vd->server->data)
|
|
g_free(vd->server->data);
|
|
*(vd->server) = *(ds->surface);
|
|
vd->server->data = g_malloc0(vd->server->linesize *
|
|
vd->server->height);
|
|
|
|
/* guest surface */
|
|
if (!vd->guest.ds)
|
|
vd->guest.ds = g_malloc0(sizeof(*vd->guest.ds));
|
|
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
|
console_color_init(ds);
|
|
*(vd->guest.ds) = *(ds->surface);
|
|
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
|
|
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
vnc_colordepth(vs);
|
|
vnc_desktop_resize(vs);
|
|
if (vs->vd->cursor) {
|
|
vnc_cursor_define(vs);
|
|
}
|
|
memset(vs->dirty, 0xFF, sizeof(vs->dirty));
|
|
}
|
|
}
|
|
|
|
/* fastest code */
|
|
static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf,
|
|
void *pixels, int size)
|
|
{
|
|
vnc_write(vs, pixels, size);
|
|
}
|
|
|
|
/* slowest but generic code. */
|
|
void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
|
|
{
|
|
uint8_t r, g, b;
|
|
VncDisplay *vd = vs->vd;
|
|
|
|
r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >>
|
|
vd->server->pf.rbits);
|
|
g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >>
|
|
vd->server->pf.gbits);
|
|
b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >>
|
|
vd->server->pf.bbits);
|
|
v = (r << vs->clientds.pf.rshift) |
|
|
(g << vs->clientds.pf.gshift) |
|
|
(b << vs->clientds.pf.bshift);
|
|
switch(vs->clientds.pf.bytes_per_pixel) {
|
|
case 1:
|
|
buf[0] = v;
|
|
break;
|
|
case 2:
|
|
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
|
buf[0] = v >> 8;
|
|
buf[1] = v;
|
|
} else {
|
|
buf[1] = v >> 8;
|
|
buf[0] = v;
|
|
}
|
|
break;
|
|
default:
|
|
case 4:
|
|
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
|
buf[0] = v >> 24;
|
|
buf[1] = v >> 16;
|
|
buf[2] = v >> 8;
|
|
buf[3] = v;
|
|
} else {
|
|
buf[3] = v >> 24;
|
|
buf[2] = v >> 16;
|
|
buf[1] = v >> 8;
|
|
buf[0] = v;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf,
|
|
void *pixels1, int size)
|
|
{
|
|
uint8_t buf[4];
|
|
|
|
if (pf->bytes_per_pixel == 4) {
|
|
uint32_t *pixels = pixels1;
|
|
int n, i;
|
|
n = size >> 2;
|
|
for(i = 0; i < n; i++) {
|
|
vnc_convert_pixel(vs, buf, pixels[i]);
|
|
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
|
|
}
|
|
} else if (pf->bytes_per_pixel == 2) {
|
|
uint16_t *pixels = pixels1;
|
|
int n, i;
|
|
n = size >> 1;
|
|
for(i = 0; i < n; i++) {
|
|
vnc_convert_pixel(vs, buf, pixels[i]);
|
|
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
|
|
}
|
|
} else if (pf->bytes_per_pixel == 1) {
|
|
uint8_t *pixels = pixels1;
|
|
int n, i;
|
|
n = size;
|
|
for(i = 0; i < n; i++) {
|
|
vnc_convert_pixel(vs, buf, pixels[i]);
|
|
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
|
|
}
|
|
} else {
|
|
fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
|
|
}
|
|
}
|
|
|
|
int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
|
|
{
|
|
int i;
|
|
uint8_t *row;
|
|
VncDisplay *vd = vs->vd;
|
|
|
|
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
|
|
for (i = 0; i < h; i++) {
|
|
vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds));
|
|
row += ds_get_linesize(vs->ds);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
|
|
{
|
|
int n = 0;
|
|
|
|
switch(vs->vnc_encoding) {
|
|
case VNC_ENCODING_ZLIB:
|
|
n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
case VNC_ENCODING_HEXTILE:
|
|
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
|
|
n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
case VNC_ENCODING_TIGHT:
|
|
n = vnc_tight_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
case VNC_ENCODING_TIGHT_PNG:
|
|
n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
case VNC_ENCODING_ZRLE:
|
|
n = vnc_zrle_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
case VNC_ENCODING_ZYWRLE:
|
|
n = vnc_zywrle_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
default:
|
|
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
|
|
n = vnc_raw_send_framebuffer_update(vs, x, y, w, h);
|
|
break;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
|
|
{
|
|
/* send bitblit op to the vnc client */
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1); /* number of rects */
|
|
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
|
|
vnc_write_u16(vs, src_x);
|
|
vnc_write_u16(vs, src_y);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
|
|
{
|
|
VncDisplay *vd = ds->opaque;
|
|
VncState *vs, *vn;
|
|
uint8_t *src_row;
|
|
uint8_t *dst_row;
|
|
int i,x,y,pitch,depth,inc,w_lim,s;
|
|
int cmp_bytes;
|
|
|
|
vnc_refresh_server_surface(vd);
|
|
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
|
|
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
|
vs->force_update = 1;
|
|
vnc_update_client_sync(vs, 1);
|
|
/* vs might be free()ed here */
|
|
}
|
|
}
|
|
|
|
/* do bitblit op on the local surface too */
|
|
pitch = ds_get_linesize(vd->ds);
|
|
depth = ds_get_bytes_per_pixel(vd->ds);
|
|
src_row = vd->server->data + pitch * src_y + depth * src_x;
|
|
dst_row = vd->server->data + pitch * dst_y + depth * dst_x;
|
|
y = dst_y;
|
|
inc = 1;
|
|
if (dst_y > src_y) {
|
|
/* copy backwards */
|
|
src_row += pitch * (h-1);
|
|
dst_row += pitch * (h-1);
|
|
pitch = -pitch;
|
|
y = dst_y + h - 1;
|
|
inc = -1;
|
|
}
|
|
w_lim = w - (16 - (dst_x % 16));
|
|
if (w_lim < 0)
|
|
w_lim = w;
|
|
else
|
|
w_lim = w - (w_lim % 16);
|
|
for (i = 0; i < h; i++) {
|
|
for (x = 0; x <= w_lim;
|
|
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
|
|
if (x == w_lim) {
|
|
if ((s = w - w_lim) == 0)
|
|
break;
|
|
} else if (!x) {
|
|
s = (16 - (dst_x % 16));
|
|
s = MIN(s, w_lim);
|
|
} else {
|
|
s = 16;
|
|
}
|
|
cmp_bytes = s * depth;
|
|
if (memcmp(src_row, dst_row, cmp_bytes) == 0)
|
|
continue;
|
|
memmove(dst_row, src_row, cmp_bytes);
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
|
set_bit(((x + dst_x) / 16), vs->dirty[y]);
|
|
}
|
|
}
|
|
}
|
|
src_row += pitch - w * depth;
|
|
dst_row += pitch - w * depth;
|
|
y += inc;
|
|
}
|
|
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
|
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void vnc_mouse_set(int x, int y, int visible)
|
|
{
|
|
/* can we ask the client(s) to move the pointer ??? */
|
|
}
|
|
|
|
static int vnc_cursor_define(VncState *vs)
|
|
{
|
|
QEMUCursor *c = vs->vd->cursor;
|
|
PixelFormat pf = qemu_default_pixelformat(32);
|
|
int isize;
|
|
|
|
if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0); /* padding */
|
|
vnc_write_u16(vs, 1); /* # of rects */
|
|
vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
|
|
VNC_ENCODING_RICH_CURSOR);
|
|
isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel;
|
|
vnc_write_pixels_generic(vs, &pf, c->data, isize);
|
|
vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
|
|
vnc_unlock_output(vs);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void vnc_dpy_cursor_define(QEMUCursor *c)
|
|
{
|
|
VncDisplay *vd = vnc_display;
|
|
VncState *vs;
|
|
|
|
cursor_put(vd->cursor);
|
|
g_free(vd->cursor_mask);
|
|
|
|
vd->cursor = c;
|
|
cursor_get(vd->cursor);
|
|
vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
|
|
vd->cursor_mask = g_malloc0(vd->cursor_msize);
|
|
cursor_get_mono_mask(c, 0, vd->cursor_mask);
|
|
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
vnc_cursor_define(vs);
|
|
}
|
|
}
|
|
|
|
static int find_and_clear_dirty_height(struct VncState *vs,
|
|
int y, int last_x, int x, int height)
|
|
{
|
|
int h;
|
|
|
|
for (h = 1; h < (height - y); h++) {
|
|
int tmp_x;
|
|
if (!test_bit(last_x, vs->dirty[y + h])) {
|
|
break;
|
|
}
|
|
for (tmp_x = last_x; tmp_x < x; tmp_x++) {
|
|
clear_bit(tmp_x, vs->dirty[y + h]);
|
|
}
|
|
}
|
|
|
|
return h;
|
|
}
|
|
|
|
static int vnc_update_client_sync(VncState *vs, int has_dirty)
|
|
{
|
|
int ret = vnc_update_client(vs, has_dirty);
|
|
vnc_jobs_join(vs);
|
|
return ret;
|
|
}
|
|
|
|
static int vnc_update_client(VncState *vs, int has_dirty)
|
|
{
|
|
if (vs->need_update && vs->csock != -1) {
|
|
VncDisplay *vd = vs->vd;
|
|
VncJob *job;
|
|
int y;
|
|
int width, height;
|
|
int n = 0;
|
|
|
|
|
|
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
|
/* kernel send buffers are full -> drop frames to throttle */
|
|
return 0;
|
|
|
|
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
|
return 0;
|
|
|
|
/*
|
|
* Send screen updates to the vnc client using the server
|
|
* surface and server dirty map. guest surface updates
|
|
* happening in parallel don't disturb us, the next pass will
|
|
* send them to the client.
|
|
*/
|
|
job = vnc_job_new(vs);
|
|
|
|
width = MIN(vd->server->width, vs->client_width);
|
|
height = MIN(vd->server->height, vs->client_height);
|
|
|
|
for (y = 0; y < height; y++) {
|
|
int x;
|
|
int last_x = -1;
|
|
for (x = 0; x < width / 16; x++) {
|
|
if (test_and_clear_bit(x, vs->dirty[y])) {
|
|
if (last_x == -1) {
|
|
last_x = x;
|
|
}
|
|
} else {
|
|
if (last_x != -1) {
|
|
int h = find_and_clear_dirty_height(vs, y, last_x, x,
|
|
height);
|
|
|
|
n += vnc_job_add_rect(job, last_x * 16, y,
|
|
(x - last_x) * 16, h);
|
|
}
|
|
last_x = -1;
|
|
}
|
|
}
|
|
if (last_x != -1) {
|
|
int h = find_and_clear_dirty_height(vs, y, last_x, x, height);
|
|
n += vnc_job_add_rect(job, last_x * 16, y,
|
|
(x - last_x) * 16, h);
|
|
}
|
|
}
|
|
|
|
vnc_job_push(job);
|
|
vs->force_update = 0;
|
|
return n;
|
|
}
|
|
|
|
if (vs->csock == -1)
|
|
vnc_disconnect_finish(vs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* audio */
|
|
static void audio_capture_notify(void *opaque, audcnotification_e cmd)
|
|
{
|
|
VncState *vs = opaque;
|
|
|
|
switch (cmd) {
|
|
case AUD_CNOTIFY_DISABLE:
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
|
|
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
break;
|
|
|
|
case AUD_CNOTIFY_ENABLE:
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
|
|
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void audio_capture_destroy(void *opaque)
|
|
{
|
|
}
|
|
|
|
static void audio_capture(void *opaque, void *buf, int size)
|
|
{
|
|
VncState *vs = opaque;
|
|
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
|
|
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
|
|
vnc_write_u32(vs, size);
|
|
vnc_write(vs, buf, size);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
static void audio_add(VncState *vs)
|
|
{
|
|
struct audio_capture_ops ops;
|
|
|
|
if (vs->audio_cap) {
|
|
monitor_printf(default_mon, "audio already running\n");
|
|
return;
|
|
}
|
|
|
|
ops.notify = audio_capture_notify;
|
|
ops.destroy = audio_capture_destroy;
|
|
ops.capture = audio_capture;
|
|
|
|
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs);
|
|
if (!vs->audio_cap) {
|
|
monitor_printf(default_mon, "Failed to add audio capture\n");
|
|
}
|
|
}
|
|
|
|
static void audio_del(VncState *vs)
|
|
{
|
|
if (vs->audio_cap) {
|
|
AUD_del_capture(vs->audio_cap, vs);
|
|
vs->audio_cap = NULL;
|
|
}
|
|
}
|
|
|
|
static void vnc_disconnect_start(VncState *vs)
|
|
{
|
|
if (vs->csock == -1)
|
|
return;
|
|
vnc_set_share_mode(vs, VNC_SHARE_MODE_DISCONNECTED);
|
|
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
|
|
closesocket(vs->csock);
|
|
vs->csock = -1;
|
|
}
|
|
|
|
static void vnc_disconnect_finish(VncState *vs)
|
|
{
|
|
int i;
|
|
|
|
vnc_jobs_join(vs); /* Wait encoding jobs */
|
|
|
|
vnc_lock_output(vs);
|
|
vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED);
|
|
|
|
buffer_free(&vs->input);
|
|
buffer_free(&vs->output);
|
|
|
|
qobject_decref(vs->info);
|
|
|
|
vnc_zlib_clear(vs);
|
|
vnc_tight_clear(vs);
|
|
vnc_zrle_clear(vs);
|
|
|
|
#ifdef CONFIG_VNC_TLS
|
|
vnc_tls_client_cleanup(vs);
|
|
#endif /* CONFIG_VNC_TLS */
|
|
#ifdef CONFIG_VNC_SASL
|
|
vnc_sasl_client_cleanup(vs);
|
|
#endif /* CONFIG_VNC_SASL */
|
|
audio_del(vs);
|
|
vnc_release_modifiers(vs);
|
|
|
|
QTAILQ_REMOVE(&vs->vd->clients, vs, next);
|
|
|
|
if (QTAILQ_EMPTY(&vs->vd->clients)) {
|
|
dcl->idle = 1;
|
|
}
|
|
|
|
qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
|
|
vnc_remove_timer(vs->vd);
|
|
if (vs->vd->lock_key_sync)
|
|
qemu_remove_led_event_handler(vs->led);
|
|
vnc_unlock_output(vs);
|
|
|
|
qemu_mutex_destroy(&vs->output_mutex);
|
|
qemu_bh_delete(vs->bh);
|
|
buffer_free(&vs->jobs_buffer);
|
|
|
|
for (i = 0; i < VNC_STAT_ROWS; ++i) {
|
|
g_free(vs->lossy_rect[i]);
|
|
}
|
|
g_free(vs->lossy_rect);
|
|
g_free(vs);
|
|
}
|
|
|
|
int vnc_client_io_error(VncState *vs, int ret, int last_errno)
|
|
{
|
|
if (ret == 0 || ret == -1) {
|
|
if (ret == -1) {
|
|
switch (last_errno) {
|
|
case EINTR:
|
|
case EAGAIN:
|
|
#ifdef _WIN32
|
|
case WSAEWOULDBLOCK:
|
|
#endif
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
|
ret, ret < 0 ? last_errno : 0);
|
|
vnc_disconnect_start(vs);
|
|
|
|
return 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
void vnc_client_error(VncState *vs)
|
|
{
|
|
VNC_DEBUG("Closing down client sock: protocol error\n");
|
|
vnc_disconnect_start(vs);
|
|
}
|
|
|
|
|
|
/*
|
|
* Called to write a chunk of data to the client socket. The data may
|
|
* be the raw data, or may have already been encoded by SASL.
|
|
* The data will be written either straight onto the socket, or
|
|
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
|
*
|
|
* NB, it is theoretically possible to have 2 layers of encryption,
|
|
* both SASL, and this TLS layer. It is highly unlikely in practice
|
|
* though, since SASL encryption will typically be a no-op if TLS
|
|
* is active
|
|
*
|
|
* Returns the number of bytes written, which may be less than
|
|
* the requested 'datalen' if the socket would block. Returns
|
|
* -1 on error, and disconnects the client socket.
|
|
*/
|
|
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
|
|
{
|
|
long ret;
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (vs->tls.session) {
|
|
ret = gnutls_write(vs->tls.session, data, datalen);
|
|
if (ret < 0) {
|
|
if (ret == GNUTLS_E_AGAIN)
|
|
errno = EAGAIN;
|
|
else
|
|
errno = EIO;
|
|
ret = -1;
|
|
}
|
|
} else
|
|
#endif /* CONFIG_VNC_TLS */
|
|
ret = send(vs->csock, (const void *)data, datalen, 0);
|
|
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
|
return vnc_client_io_error(vs, ret, socket_error());
|
|
}
|
|
|
|
|
|
/*
|
|
* Called to write buffered data to the client socket, when not
|
|
* using any SASL SSF encryption layers. Will write as much data
|
|
* as possible without blocking. If all buffered data is written,
|
|
* will switch the FD poll() handler back to read monitoring.
|
|
*
|
|
* Returns the number of bytes written, which may be less than
|
|
* the buffered output data if the socket would block. Returns
|
|
* -1 on error, and disconnects the client socket.
|
|
*/
|
|
static long vnc_client_write_plain(VncState *vs)
|
|
{
|
|
long ret;
|
|
|
|
#ifdef CONFIG_VNC_SASL
|
|
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
|
vs->output.buffer, vs->output.capacity, vs->output.offset,
|
|
vs->sasl.waitWriteSSF);
|
|
|
|
if (vs->sasl.conn &&
|
|
vs->sasl.runSSF &&
|
|
vs->sasl.waitWriteSSF) {
|
|
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF);
|
|
if (ret)
|
|
vs->sasl.waitWriteSSF -= ret;
|
|
} else
|
|
#endif /* CONFIG_VNC_SASL */
|
|
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset);
|
|
if (!ret)
|
|
return 0;
|
|
|
|
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
|
|
vs->output.offset -= ret;
|
|
|
|
if (vs->output.offset == 0) {
|
|
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* First function called whenever there is data to be written to
|
|
* the client socket. Will delegate actual work according to whether
|
|
* SASL SSF layers are enabled (thus requiring encryption calls)
|
|
*/
|
|
static void vnc_client_write_locked(void *opaque)
|
|
{
|
|
VncState *vs = opaque;
|
|
|
|
#ifdef CONFIG_VNC_SASL
|
|
if (vs->sasl.conn &&
|
|
vs->sasl.runSSF &&
|
|
!vs->sasl.waitWriteSSF) {
|
|
vnc_client_write_sasl(vs);
|
|
} else
|
|
#endif /* CONFIG_VNC_SASL */
|
|
vnc_client_write_plain(vs);
|
|
}
|
|
|
|
void vnc_client_write(void *opaque)
|
|
{
|
|
VncState *vs = opaque;
|
|
|
|
vnc_lock_output(vs);
|
|
if (vs->output.offset) {
|
|
vnc_client_write_locked(opaque);
|
|
} else if (vs->csock != -1) {
|
|
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
|
|
}
|
|
vnc_unlock_output(vs);
|
|
}
|
|
|
|
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
|
{
|
|
vs->read_handler = func;
|
|
vs->read_handler_expect = expecting;
|
|
}
|
|
|
|
|
|
/*
|
|
* Called to read a chunk of data from the client socket. The data may
|
|
* be the raw data, or may need to be further decoded by SASL.
|
|
* The data will be read either straight from to the socket, or
|
|
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
|
*
|
|
* NB, it is theoretically possible to have 2 layers of encryption,
|
|
* both SASL, and this TLS layer. It is highly unlikely in practice
|
|
* though, since SASL encryption will typically be a no-op if TLS
|
|
* is active
|
|
*
|
|
* Returns the number of bytes read, which may be less than
|
|
* the requested 'datalen' if the socket would block. Returns
|
|
* -1 on error, and disconnects the client socket.
|
|
*/
|
|
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
|
{
|
|
long ret;
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (vs->tls.session) {
|
|
ret = gnutls_read(vs->tls.session, data, datalen);
|
|
if (ret < 0) {
|
|
if (ret == GNUTLS_E_AGAIN)
|
|
errno = EAGAIN;
|
|
else
|
|
errno = EIO;
|
|
ret = -1;
|
|
}
|
|
} else
|
|
#endif /* CONFIG_VNC_TLS */
|
|
ret = qemu_recv(vs->csock, data, datalen, 0);
|
|
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
|
return vnc_client_io_error(vs, ret, socket_error());
|
|
}
|
|
|
|
|
|
/*
|
|
* Called to read data from the client socket to the input buffer,
|
|
* when not using any SASL SSF encryption layers. Will read as much
|
|
* data as possible without blocking.
|
|
*
|
|
* Returns the number of bytes read. Returns -1 on error, and
|
|
* disconnects the client socket.
|
|
*/
|
|
static long vnc_client_read_plain(VncState *vs)
|
|
{
|
|
int ret;
|
|
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
|
vs->input.buffer, vs->input.capacity, vs->input.offset);
|
|
buffer_reserve(&vs->input, 4096);
|
|
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
|
if (!ret)
|
|
return 0;
|
|
vs->input.offset += ret;
|
|
return ret;
|
|
}
|
|
|
|
static void vnc_jobs_bh(void *opaque)
|
|
{
|
|
VncState *vs = opaque;
|
|
|
|
vnc_jobs_consume_buffer(vs);
|
|
}
|
|
|
|
/*
|
|
* First function called whenever there is more data to be read from
|
|
* the client socket. Will delegate actual work according to whether
|
|
* SASL SSF layers are enabled (thus requiring decryption calls)
|
|
*/
|
|
void vnc_client_read(void *opaque)
|
|
{
|
|
VncState *vs = opaque;
|
|
long ret;
|
|
|
|
#ifdef CONFIG_VNC_SASL
|
|
if (vs->sasl.conn && vs->sasl.runSSF)
|
|
ret = vnc_client_read_sasl(vs);
|
|
else
|
|
#endif /* CONFIG_VNC_SASL */
|
|
ret = vnc_client_read_plain(vs);
|
|
if (!ret) {
|
|
if (vs->csock == -1)
|
|
vnc_disconnect_finish(vs);
|
|
return;
|
|
}
|
|
|
|
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
|
size_t len = vs->read_handler_expect;
|
|
int ret;
|
|
|
|
ret = vs->read_handler(vs, vs->input.buffer, len);
|
|
if (vs->csock == -1) {
|
|
vnc_disconnect_finish(vs);
|
|
return;
|
|
}
|
|
|
|
if (!ret) {
|
|
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
|
|
vs->input.offset -= len;
|
|
} else {
|
|
vs->read_handler_expect = ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
void vnc_write(VncState *vs, const void *data, size_t len)
|
|
{
|
|
buffer_reserve(&vs->output, len);
|
|
|
|
if (vs->csock != -1 && buffer_empty(&vs->output)) {
|
|
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
|
}
|
|
|
|
buffer_append(&vs->output, data, len);
|
|
}
|
|
|
|
void vnc_write_s32(VncState *vs, int32_t value)
|
|
{
|
|
vnc_write_u32(vs, *(uint32_t *)&value);
|
|
}
|
|
|
|
void vnc_write_u32(VncState *vs, uint32_t value)
|
|
{
|
|
uint8_t buf[4];
|
|
|
|
buf[0] = (value >> 24) & 0xFF;
|
|
buf[1] = (value >> 16) & 0xFF;
|
|
buf[2] = (value >> 8) & 0xFF;
|
|
buf[3] = value & 0xFF;
|
|
|
|
vnc_write(vs, buf, 4);
|
|
}
|
|
|
|
void vnc_write_u16(VncState *vs, uint16_t value)
|
|
{
|
|
uint8_t buf[2];
|
|
|
|
buf[0] = (value >> 8) & 0xFF;
|
|
buf[1] = value & 0xFF;
|
|
|
|
vnc_write(vs, buf, 2);
|
|
}
|
|
|
|
void vnc_write_u8(VncState *vs, uint8_t value)
|
|
{
|
|
vnc_write(vs, (char *)&value, 1);
|
|
}
|
|
|
|
void vnc_flush(VncState *vs)
|
|
{
|
|
vnc_lock_output(vs);
|
|
if (vs->csock != -1 && vs->output.offset) {
|
|
vnc_client_write_locked(vs);
|
|
}
|
|
vnc_unlock_output(vs);
|
|
}
|
|
|
|
uint8_t read_u8(uint8_t *data, size_t offset)
|
|
{
|
|
return data[offset];
|
|
}
|
|
|
|
uint16_t read_u16(uint8_t *data, size_t offset)
|
|
{
|
|
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
|
|
}
|
|
|
|
int32_t read_s32(uint8_t *data, size_t offset)
|
|
{
|
|
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
|
|
(data[offset + 2] << 8) | data[offset + 3]);
|
|
}
|
|
|
|
uint32_t read_u32(uint8_t *data, size_t offset)
|
|
{
|
|
return ((data[offset] << 24) | (data[offset + 1] << 16) |
|
|
(data[offset + 2] << 8) | data[offset + 3]);
|
|
}
|
|
|
|
static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
|
|
{
|
|
}
|
|
|
|
static void check_pointer_type_change(Notifier *notifier, void *data)
|
|
{
|
|
VncState *vs = container_of(notifier, VncState, mouse_mode_notifier);
|
|
int absolute = kbd_mouse_is_absolute();
|
|
|
|
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1);
|
|
vnc_framebuffer_update(vs, absolute, 0,
|
|
ds_get_width(vs->ds), ds_get_height(vs->ds),
|
|
VNC_ENCODING_POINTER_TYPE_CHANGE);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
vs->absolute = absolute;
|
|
}
|
|
|
|
static void pointer_event(VncState *vs, int button_mask, int x, int y)
|
|
{
|
|
int buttons = 0;
|
|
int dz = 0;
|
|
|
|
if (button_mask & 0x01)
|
|
buttons |= MOUSE_EVENT_LBUTTON;
|
|
if (button_mask & 0x02)
|
|
buttons |= MOUSE_EVENT_MBUTTON;
|
|
if (button_mask & 0x04)
|
|
buttons |= MOUSE_EVENT_RBUTTON;
|
|
if (button_mask & 0x08)
|
|
dz = -1;
|
|
if (button_mask & 0x10)
|
|
dz = 1;
|
|
|
|
if (vs->absolute) {
|
|
kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
|
|
x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000,
|
|
ds_get_height(vs->ds) > 1 ?
|
|
y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000,
|
|
dz, buttons);
|
|
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
|
|
x -= 0x7FFF;
|
|
y -= 0x7FFF;
|
|
|
|
kbd_mouse_event(x, y, dz, buttons);
|
|
} else {
|
|
if (vs->last_x != -1)
|
|
kbd_mouse_event(x - vs->last_x,
|
|
y - vs->last_y,
|
|
dz, buttons);
|
|
vs->last_x = x;
|
|
vs->last_y = y;
|
|
}
|
|
}
|
|
|
|
static void reset_keys(VncState *vs)
|
|
{
|
|
int i;
|
|
for(i = 0; i < 256; i++) {
|
|
if (vs->modifiers_state[i]) {
|
|
if (i & SCANCODE_GREY)
|
|
kbd_put_keycode(SCANCODE_EMUL0);
|
|
kbd_put_keycode(i | SCANCODE_UP);
|
|
vs->modifiers_state[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void press_key(VncState *vs, int keysym)
|
|
{
|
|
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
|
|
if (keycode & SCANCODE_GREY)
|
|
kbd_put_keycode(SCANCODE_EMUL0);
|
|
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
|
|
if (keycode & SCANCODE_GREY)
|
|
kbd_put_keycode(SCANCODE_EMUL0);
|
|
kbd_put_keycode(keycode | SCANCODE_UP);
|
|
}
|
|
|
|
static void kbd_leds(void *opaque, int ledstate)
|
|
{
|
|
VncState *vs = opaque;
|
|
int caps, num;
|
|
|
|
caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0;
|
|
num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0;
|
|
|
|
if (vs->modifiers_state[0x3a] != caps) {
|
|
vs->modifiers_state[0x3a] = caps;
|
|
}
|
|
if (vs->modifiers_state[0x45] != num) {
|
|
vs->modifiers_state[0x45] = num;
|
|
}
|
|
}
|
|
|
|
static void do_key_event(VncState *vs, int down, int keycode, int sym)
|
|
{
|
|
/* QEMU console switch */
|
|
switch(keycode) {
|
|
case 0x2a: /* Left Shift */
|
|
case 0x36: /* Right Shift */
|
|
case 0x1d: /* Left CTRL */
|
|
case 0x9d: /* Right CTRL */
|
|
case 0x38: /* Left ALT */
|
|
case 0xb8: /* Right ALT */
|
|
if (down)
|
|
vs->modifiers_state[keycode] = 1;
|
|
else
|
|
vs->modifiers_state[keycode] = 0;
|
|
break;
|
|
case 0x02 ... 0x0a: /* '1' to '9' keys */
|
|
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
|
|
/* Reset the modifiers sent to the current console */
|
|
reset_keys(vs);
|
|
console_select(keycode - 0x02);
|
|
return;
|
|
}
|
|
break;
|
|
case 0x3a: /* CapsLock */
|
|
case 0x45: /* NumLock */
|
|
if (down)
|
|
vs->modifiers_state[keycode] ^= 1;
|
|
break;
|
|
}
|
|
|
|
if (down && vs->vd->lock_key_sync &&
|
|
keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
|
|
/* If the numlock state needs to change then simulate an additional
|
|
keypress before sending this one. This will happen if the user
|
|
toggles numlock away from the VNC window.
|
|
*/
|
|
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) {
|
|
if (!vs->modifiers_state[0x45]) {
|
|
vs->modifiers_state[0x45] = 1;
|
|
press_key(vs, 0xff7f);
|
|
}
|
|
} else {
|
|
if (vs->modifiers_state[0x45]) {
|
|
vs->modifiers_state[0x45] = 0;
|
|
press_key(vs, 0xff7f);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (down && vs->vd->lock_key_sync &&
|
|
((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) {
|
|
/* If the capslock state needs to change then simulate an additional
|
|
keypress before sending this one. This will happen if the user
|
|
toggles capslock away from the VNC window.
|
|
*/
|
|
int uppercase = !!(sym >= 'A' && sym <= 'Z');
|
|
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]);
|
|
int capslock = !!(vs->modifiers_state[0x3a]);
|
|
if (capslock) {
|
|
if (uppercase == shift) {
|
|
vs->modifiers_state[0x3a] = 0;
|
|
press_key(vs, 0xffe5);
|
|
}
|
|
} else {
|
|
if (uppercase != shift) {
|
|
vs->modifiers_state[0x3a] = 1;
|
|
press_key(vs, 0xffe5);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_graphic_console()) {
|
|
if (keycode & SCANCODE_GREY)
|
|
kbd_put_keycode(SCANCODE_EMUL0);
|
|
if (down)
|
|
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
|
|
else
|
|
kbd_put_keycode(keycode | SCANCODE_UP);
|
|
} else {
|
|
bool numlock = vs->modifiers_state[0x45];
|
|
bool control = (vs->modifiers_state[0x1d] ||
|
|
vs->modifiers_state[0x9d]);
|
|
/* QEMU console emulation */
|
|
if (down) {
|
|
switch (keycode) {
|
|
case 0x2a: /* Left Shift */
|
|
case 0x36: /* Right Shift */
|
|
case 0x1d: /* Left CTRL */
|
|
case 0x9d: /* Right CTRL */
|
|
case 0x38: /* Left ALT */
|
|
case 0xb8: /* Right ALT */
|
|
break;
|
|
case 0xc8:
|
|
kbd_put_keysym(QEMU_KEY_UP);
|
|
break;
|
|
case 0xd0:
|
|
kbd_put_keysym(QEMU_KEY_DOWN);
|
|
break;
|
|
case 0xcb:
|
|
kbd_put_keysym(QEMU_KEY_LEFT);
|
|
break;
|
|
case 0xcd:
|
|
kbd_put_keysym(QEMU_KEY_RIGHT);
|
|
break;
|
|
case 0xd3:
|
|
kbd_put_keysym(QEMU_KEY_DELETE);
|
|
break;
|
|
case 0xc7:
|
|
kbd_put_keysym(QEMU_KEY_HOME);
|
|
break;
|
|
case 0xcf:
|
|
kbd_put_keysym(QEMU_KEY_END);
|
|
break;
|
|
case 0xc9:
|
|
kbd_put_keysym(QEMU_KEY_PAGEUP);
|
|
break;
|
|
case 0xd1:
|
|
kbd_put_keysym(QEMU_KEY_PAGEDOWN);
|
|
break;
|
|
|
|
case 0x47:
|
|
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
|
break;
|
|
case 0x48:
|
|
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
|
break;
|
|
case 0x49:
|
|
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
|
break;
|
|
case 0x4b:
|
|
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
|
break;
|
|
case 0x4c:
|
|
kbd_put_keysym('5');
|
|
break;
|
|
case 0x4d:
|
|
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
|
break;
|
|
case 0x4f:
|
|
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
|
break;
|
|
case 0x50:
|
|
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
|
break;
|
|
case 0x51:
|
|
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
|
break;
|
|
case 0x52:
|
|
kbd_put_keysym('0');
|
|
break;
|
|
case 0x53:
|
|
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
|
break;
|
|
|
|
case 0xb5:
|
|
kbd_put_keysym('/');
|
|
break;
|
|
case 0x37:
|
|
kbd_put_keysym('*');
|
|
break;
|
|
case 0x4a:
|
|
kbd_put_keysym('-');
|
|
break;
|
|
case 0x4e:
|
|
kbd_put_keysym('+');
|
|
break;
|
|
case 0x9c:
|
|
kbd_put_keysym('\n');
|
|
break;
|
|
|
|
default:
|
|
if (control) {
|
|
kbd_put_keysym(sym & 0x1f);
|
|
} else {
|
|
kbd_put_keysym(sym);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void vnc_release_modifiers(VncState *vs)
|
|
{
|
|
static const int keycodes[] = {
|
|
/* shift, control, alt keys, both left & right */
|
|
0x2a, 0x36, 0x1d, 0x9d, 0x38, 0xb8,
|
|
};
|
|
int i, keycode;
|
|
|
|
if (!is_graphic_console()) {
|
|
return;
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(keycodes); i++) {
|
|
keycode = keycodes[i];
|
|
if (!vs->modifiers_state[keycode]) {
|
|
continue;
|
|
}
|
|
if (keycode & SCANCODE_GREY) {
|
|
kbd_put_keycode(SCANCODE_EMUL0);
|
|
}
|
|
kbd_put_keycode(keycode | SCANCODE_UP);
|
|
}
|
|
}
|
|
|
|
static void key_event(VncState *vs, int down, uint32_t sym)
|
|
{
|
|
int keycode;
|
|
int lsym = sym;
|
|
|
|
if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) {
|
|
lsym = lsym - 'A' + 'a';
|
|
}
|
|
|
|
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
|
|
do_key_event(vs, down, keycode, sym);
|
|
}
|
|
|
|
static void ext_key_event(VncState *vs, int down,
|
|
uint32_t sym, uint16_t keycode)
|
|
{
|
|
/* if the user specifies a keyboard layout, always use it */
|
|
if (keyboard_layout)
|
|
key_event(vs, down, sym);
|
|
else
|
|
do_key_event(vs, down, keycode, sym);
|
|
}
|
|
|
|
static void framebuffer_update_request(VncState *vs, int incremental,
|
|
int x_position, int y_position,
|
|
int w, int h)
|
|
{
|
|
int i;
|
|
const size_t width = ds_get_width(vs->ds) / 16;
|
|
|
|
if (y_position > ds_get_height(vs->ds))
|
|
y_position = ds_get_height(vs->ds);
|
|
if (y_position + h >= ds_get_height(vs->ds))
|
|
h = ds_get_height(vs->ds) - y_position;
|
|
|
|
vs->need_update = 1;
|
|
if (!incremental) {
|
|
vs->force_update = 1;
|
|
for (i = 0; i < h; i++) {
|
|
bitmap_set(vs->dirty[y_position + i], 0, width);
|
|
bitmap_clear(vs->dirty[y_position + i], width,
|
|
VNC_DIRTY_BITS - width);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void send_ext_key_event_ack(VncState *vs)
|
|
{
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1);
|
|
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
|
|
VNC_ENCODING_EXT_KEY_EVENT);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
static void send_ext_audio_ack(VncState *vs)
|
|
{
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1);
|
|
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds),
|
|
VNC_ENCODING_AUDIO);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
|
|
{
|
|
int i;
|
|
unsigned int enc = 0;
|
|
|
|
vs->features = 0;
|
|
vs->vnc_encoding = 0;
|
|
vs->tight.compression = 9;
|
|
vs->tight.quality = -1; /* Lossless by default */
|
|
vs->absolute = -1;
|
|
|
|
/*
|
|
* Start from the end because the encodings are sent in order of preference.
|
|
* This way the preferred encoding (first encoding defined in the array)
|
|
* will be set at the end of the loop.
|
|
*/
|
|
for (i = n_encodings - 1; i >= 0; i--) {
|
|
enc = encodings[i];
|
|
switch (enc) {
|
|
case VNC_ENCODING_RAW:
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_COPYRECT:
|
|
vs->features |= VNC_FEATURE_COPYRECT_MASK;
|
|
break;
|
|
case VNC_ENCODING_HEXTILE:
|
|
vs->features |= VNC_FEATURE_HEXTILE_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_TIGHT:
|
|
vs->features |= VNC_FEATURE_TIGHT_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_TIGHT_PNG:
|
|
vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_ZLIB:
|
|
vs->features |= VNC_FEATURE_ZLIB_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_ZRLE:
|
|
vs->features |= VNC_FEATURE_ZRLE_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_ZYWRLE:
|
|
vs->features |= VNC_FEATURE_ZYWRLE_MASK;
|
|
vs->vnc_encoding = enc;
|
|
break;
|
|
case VNC_ENCODING_DESKTOPRESIZE:
|
|
vs->features |= VNC_FEATURE_RESIZE_MASK;
|
|
break;
|
|
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
|
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
|
|
break;
|
|
case VNC_ENCODING_RICH_CURSOR:
|
|
vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
|
|
break;
|
|
case VNC_ENCODING_EXT_KEY_EVENT:
|
|
send_ext_key_event_ack(vs);
|
|
break;
|
|
case VNC_ENCODING_AUDIO:
|
|
send_ext_audio_ack(vs);
|
|
break;
|
|
case VNC_ENCODING_WMVi:
|
|
vs->features |= VNC_FEATURE_WMVI_MASK;
|
|
break;
|
|
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
|
|
vs->tight.compression = (enc & 0x0F);
|
|
break;
|
|
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
|
|
if (vs->vd->lossy) {
|
|
vs->tight.quality = (enc & 0x0F);
|
|
}
|
|
break;
|
|
default:
|
|
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
|
break;
|
|
}
|
|
}
|
|
vnc_desktop_resize(vs);
|
|
check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
|
|
}
|
|
|
|
static void set_pixel_conversion(VncState *vs)
|
|
{
|
|
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
|
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) &&
|
|
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
|
vs->write_pixels = vnc_write_pixels_copy;
|
|
vnc_hextile_set_pixel_conversion(vs, 0);
|
|
} else {
|
|
vs->write_pixels = vnc_write_pixels_generic;
|
|
vnc_hextile_set_pixel_conversion(vs, 1);
|
|
}
|
|
}
|
|
|
|
static void set_pixel_format(VncState *vs,
|
|
int bits_per_pixel, int depth,
|
|
int big_endian_flag, int true_color_flag,
|
|
int red_max, int green_max, int blue_max,
|
|
int red_shift, int green_shift, int blue_shift)
|
|
{
|
|
if (!true_color_flag) {
|
|
vnc_client_error(vs);
|
|
return;
|
|
}
|
|
|
|
vs->clientds = *(vs->vd->guest.ds);
|
|
vs->clientds.pf.rmax = red_max;
|
|
vs->clientds.pf.rbits = hweight_long(red_max);
|
|
vs->clientds.pf.rshift = red_shift;
|
|
vs->clientds.pf.rmask = red_max << red_shift;
|
|
vs->clientds.pf.gmax = green_max;
|
|
vs->clientds.pf.gbits = hweight_long(green_max);
|
|
vs->clientds.pf.gshift = green_shift;
|
|
vs->clientds.pf.gmask = green_max << green_shift;
|
|
vs->clientds.pf.bmax = blue_max;
|
|
vs->clientds.pf.bbits = hweight_long(blue_max);
|
|
vs->clientds.pf.bshift = blue_shift;
|
|
vs->clientds.pf.bmask = blue_max << blue_shift;
|
|
vs->clientds.pf.bits_per_pixel = bits_per_pixel;
|
|
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
|
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
|
|
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
|
|
|
set_pixel_conversion(vs);
|
|
|
|
vga_hw_invalidate();
|
|
vga_hw_update();
|
|
}
|
|
|
|
static void pixel_format_message (VncState *vs) {
|
|
char pad[3] = { 0, 0, 0 };
|
|
|
|
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
|
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
|
|
|
#ifdef HOST_WORDS_BIGENDIAN
|
|
vnc_write_u8(vs, 1); /* big-endian-flag */
|
|
#else
|
|
vnc_write_u8(vs, 0); /* big-endian-flag */
|
|
#endif
|
|
vnc_write_u8(vs, 1); /* true-color-flag */
|
|
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
|
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
|
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
|
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
|
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
|
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
|
|
|
vnc_hextile_set_pixel_conversion(vs, 0);
|
|
|
|
vs->clientds = *(vs->ds->surface);
|
|
vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
|
|
vs->write_pixels = vnc_write_pixels_copy;
|
|
|
|
vnc_write(vs, pad, 3); /* padding */
|
|
}
|
|
|
|
static void vnc_dpy_setdata(DisplayState *ds)
|
|
{
|
|
VncDisplay *vd = ds->opaque;
|
|
|
|
*(vd->guest.ds) = *(ds->surface);
|
|
vnc_dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds));
|
|
}
|
|
|
|
static void vnc_colordepth(VncState *vs)
|
|
{
|
|
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
|
/* Sending a WMVi message to notify the client*/
|
|
vnc_lock_output(vs);
|
|
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
|
|
vnc_write_u8(vs, 0);
|
|
vnc_write_u16(vs, 1); /* number of rects */
|
|
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
|
|
ds_get_height(vs->ds), VNC_ENCODING_WMVi);
|
|
pixel_format_message(vs);
|
|
vnc_unlock_output(vs);
|
|
vnc_flush(vs);
|
|
} else {
|
|
set_pixel_conversion(vs);
|
|
}
|
|
}
|
|
|
|
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len)
|
|
{
|
|
int i;
|
|
uint16_t limit;
|
|
VncDisplay *vd = vs->vd;
|
|
|
|
if (data[0] > 3) {
|
|
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
|
|
if (!qemu_timer_expired(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval))
|
|
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval);
|
|
}
|
|
|
|
switch (data[0]) {
|
|
case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
|
|
if (len == 1)
|
|
return 20;
|
|
|
|
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
|
|
read_u8(data, 6), read_u8(data, 7),
|
|
read_u16(data, 8), read_u16(data, 10),
|
|
read_u16(data, 12), read_u8(data, 14),
|
|
read_u8(data, 15), read_u8(data, 16));
|
|
break;
|
|
case VNC_MSG_CLIENT_SET_ENCODINGS:
|
|
if (len == 1)
|
|
return 4;
|
|
|
|
if (len == 4) {
|
|
limit = read_u16(data, 2);
|
|
if (limit > 0)
|
|
return 4 + (limit * 4);
|
|
} else
|
|
limit = read_u16(data, 2);
|
|
|
|
for (i = 0; i < limit; i++) {
|
|
int32_t val = read_s32(data, 4 + (i * 4));
|
|
memcpy(data + 4 + (i * 4), &val, sizeof(val));
|
|
}
|
|
|
|
set_encodings(vs, (int32_t *)(data + 4), limit);
|
|
break;
|
|
case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
|
|
if (len == 1)
|
|
return 10;
|
|
|
|
framebuffer_update_request(vs,
|
|
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
|
|
read_u16(data, 6), read_u16(data, 8));
|
|
break;
|
|
case VNC_MSG_CLIENT_KEY_EVENT:
|
|
if (len == 1)
|
|
return 8;
|
|
|
|
key_event(vs, read_u8(data, 1), read_u32(data, 4));
|
|
break;
|
|
case VNC_MSG_CLIENT_POINTER_EVENT:
|
|
if (len == 1)
|
|
return 6;
|
|
|
|
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
|
|
break;
|
|
case VNC_MSG_CLIENT_CUT_TEXT:
|
|
if (len == 1)
|
|
return 8;
|
|
|
|
if (len == 8) {
|
|
uint32_t dlen = read_u32(data, 4);
|
|
if (dlen > 0)
|
|
return 8 + dlen;
|
|
}
|
|
|
|
client_cut_text(vs, read_u32(data, 4), data + 8);
|
|
break;
|
|
case VNC_MSG_CLIENT_QEMU:
|
|
if (len == 1)
|
|
return 2;
|
|
|
|
switch (read_u8(data, 1)) {
|
|
case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
|
|
if (len == 2)
|
|
return 12;
|
|
|
|
ext_key_event(vs, read_u16(data, 2),
|
|
read_u32(data, 4), read_u32(data, 8));
|
|
break;
|
|
case VNC_MSG_CLIENT_QEMU_AUDIO:
|
|
if (len == 2)
|
|
return 4;
|
|
|
|
switch (read_u16 (data, 2)) {
|
|
case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
|
|
audio_add(vs);
|
|
break;
|
|
case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
|
|
audio_del(vs);
|
|
break;
|
|
case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
|
|
if (len == 4)
|
|
return 10;
|
|
switch (read_u8(data, 4)) {
|
|
case 0: vs->as.fmt = AUD_FMT_U8; break;
|
|
case 1: vs->as.fmt = AUD_FMT_S8; break;
|
|
case 2: vs->as.fmt = AUD_FMT_U16; break;
|
|
case 3: vs->as.fmt = AUD_FMT_S16; break;
|
|
case 4: vs->as.fmt = AUD_FMT_U32; break;
|
|
case 5: vs->as.fmt = AUD_FMT_S32; break;
|
|
default:
|
|
printf("Invalid audio format %d\n", read_u8(data, 4));
|
|
vnc_client_error(vs);
|
|
break;
|
|
}
|
|
vs->as.nchannels = read_u8(data, 5);
|
|
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) {
|
|
printf("Invalid audio channel coount %d\n",
|
|
read_u8(data, 5));
|
|
vnc_client_error(vs);
|
|
break;
|
|
}
|
|
vs->as.freq = read_u32(data, 6);
|
|
break;
|
|
default:
|
|
printf ("Invalid audio message %d\n", read_u8(data, 4));
|
|
vnc_client_error(vs);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
printf("Msg: %d\n", read_u16(data, 0));
|
|
vnc_client_error(vs);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
printf("Msg: %d\n", data[0]);
|
|
vnc_client_error(vs);
|
|
break;
|
|
}
|
|
|
|
vnc_read_when(vs, protocol_client_msg, 1);
|
|
return 0;
|
|
}
|
|
|
|
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
|
|
{
|
|
char buf[1024];
|
|
VncShareMode mode;
|
|
int size;
|
|
|
|
mode = data[0] ? VNC_SHARE_MODE_SHARED : VNC_SHARE_MODE_EXCLUSIVE;
|
|
switch (vs->vd->share_policy) {
|
|
case VNC_SHARE_POLICY_IGNORE:
|
|
/*
|
|
* Ignore the shared flag. Nothing to do here.
|
|
*
|
|
* Doesn't conform to the rfb spec but is traditional qemu
|
|
* behavior, thus left here as option for compatibility
|
|
* reasons.
|
|
*/
|
|
break;
|
|
case VNC_SHARE_POLICY_ALLOW_EXCLUSIVE:
|
|
/*
|
|
* Policy: Allow clients ask for exclusive access.
|
|
*
|
|
* Implementation: When a client asks for exclusive access,
|
|
* disconnect all others. Shared connects are allowed as long
|
|
* as no exclusive connection exists.
|
|
*
|
|
* This is how the rfb spec suggests to handle the shared flag.
|
|
*/
|
|
if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
|
VncState *client;
|
|
QTAILQ_FOREACH(client, &vs->vd->clients, next) {
|
|
if (vs == client) {
|
|
continue;
|
|
}
|
|
if (client->share_mode != VNC_SHARE_MODE_EXCLUSIVE &&
|
|
client->share_mode != VNC_SHARE_MODE_SHARED) {
|
|
continue;
|
|
}
|
|
vnc_disconnect_start(client);
|
|
}
|
|
}
|
|
if (mode == VNC_SHARE_MODE_SHARED) {
|
|
if (vs->vd->num_exclusive > 0) {
|
|
vnc_disconnect_start(vs);
|
|
return 0;
|
|
}
|
|
}
|
|
break;
|
|
case VNC_SHARE_POLICY_FORCE_SHARED:
|
|
/*
|
|
* Policy: Shared connects only.
|
|
* Implementation: Disallow clients asking for exclusive access.
|
|
*
|
|
* Useful for shared desktop sessions where you don't want
|
|
* someone forgetting to say -shared when running the vnc
|
|
* client disconnect everybody else.
|
|
*/
|
|
if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
|
vnc_disconnect_start(vs);
|
|
return 0;
|
|
}
|
|
break;
|
|
}
|
|
vnc_set_share_mode(vs, mode);
|
|
|
|
vs->client_width = ds_get_width(vs->ds);
|
|
vs->client_height = ds_get_height(vs->ds);
|
|
vnc_write_u16(vs, vs->client_width);
|
|
vnc_write_u16(vs, vs->client_height);
|
|
|
|
pixel_format_message(vs);
|
|
|
|
if (qemu_name)
|
|
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
|
|
else
|
|
size = snprintf(buf, sizeof(buf), "QEMU");
|
|
|
|
vnc_write_u32(vs, size);
|
|
vnc_write(vs, buf, size);
|
|
vnc_flush(vs);
|
|
|
|
vnc_client_cache_auth(vs);
|
|
vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED);
|
|
|
|
vnc_read_when(vs, protocol_client_msg, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void start_client_init(VncState *vs)
|
|
{
|
|
vnc_read_when(vs, protocol_client_init, 1);
|
|
}
|
|
|
|
static void make_challenge(VncState *vs)
|
|
{
|
|
int i;
|
|
|
|
srand(time(NULL)+getpid()+getpid()*987654+rand());
|
|
|
|
for (i = 0 ; i < sizeof(vs->challenge) ; i++)
|
|
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
|
|
}
|
|
|
|
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
|
|
{
|
|
unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
|
|
int i, j, pwlen;
|
|
unsigned char key[8];
|
|
time_t now = time(NULL);
|
|
|
|
if (!vs->vd->password) {
|
|
VNC_DEBUG("No password configured on server");
|
|
goto reject;
|
|
}
|
|
if (vs->vd->expires < now) {
|
|
VNC_DEBUG("Password is expired");
|
|
goto reject;
|
|
}
|
|
|
|
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
|
|
|
|
/* Calculate the expected challenge response */
|
|
pwlen = strlen(vs->vd->password);
|
|
for (i=0; i<sizeof(key); i++)
|
|
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
|
deskey(key, EN0);
|
|
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
|
|
des(response+j, response+j);
|
|
|
|
/* Compare expected vs actual challenge response */
|
|
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
|
|
VNC_DEBUG("Client challenge response did not match\n");
|
|
goto reject;
|
|
} else {
|
|
VNC_DEBUG("Accepting VNC challenge response\n");
|
|
vnc_write_u32(vs, 0); /* Accept auth */
|
|
vnc_flush(vs);
|
|
|
|
start_client_init(vs);
|
|
}
|
|
return 0;
|
|
|
|
reject:
|
|
vnc_write_u32(vs, 1); /* Reject auth */
|
|
if (vs->minor >= 8) {
|
|
static const char err[] = "Authentication failed";
|
|
vnc_write_u32(vs, sizeof(err));
|
|
vnc_write(vs, err, sizeof(err));
|
|
}
|
|
vnc_flush(vs);
|
|
vnc_client_error(vs);
|
|
return 0;
|
|
}
|
|
|
|
void start_auth_vnc(VncState *vs)
|
|
{
|
|
make_challenge(vs);
|
|
/* Send client a 'random' challenge */
|
|
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
|
vnc_flush(vs);
|
|
|
|
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
|
}
|
|
|
|
|
|
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len)
|
|
{
|
|
/* We only advertise 1 auth scheme at a time, so client
|
|
* must pick the one we sent. Verify this */
|
|
if (data[0] != vs->auth) { /* Reject auth */
|
|
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]);
|
|
vnc_write_u32(vs, 1);
|
|
if (vs->minor >= 8) {
|
|
static const char err[] = "Authentication failed";
|
|
vnc_write_u32(vs, sizeof(err));
|
|
vnc_write(vs, err, sizeof(err));
|
|
}
|
|
vnc_client_error(vs);
|
|
} else { /* Accept requested auth */
|
|
VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
|
|
switch (vs->auth) {
|
|
case VNC_AUTH_NONE:
|
|
VNC_DEBUG("Accept auth none\n");
|
|
if (vs->minor >= 8) {
|
|
vnc_write_u32(vs, 0); /* Accept auth completion */
|
|
vnc_flush(vs);
|
|
}
|
|
start_client_init(vs);
|
|
break;
|
|
|
|
case VNC_AUTH_VNC:
|
|
VNC_DEBUG("Start VNC auth\n");
|
|
start_auth_vnc(vs);
|
|
break;
|
|
|
|
#ifdef CONFIG_VNC_TLS
|
|
case VNC_AUTH_VENCRYPT:
|
|
VNC_DEBUG("Accept VeNCrypt auth\n");
|
|
start_auth_vencrypt(vs);
|
|
break;
|
|
#endif /* CONFIG_VNC_TLS */
|
|
|
|
#ifdef CONFIG_VNC_SASL
|
|
case VNC_AUTH_SASL:
|
|
VNC_DEBUG("Accept SASL auth\n");
|
|
start_auth_sasl(vs);
|
|
break;
|
|
#endif /* CONFIG_VNC_SASL */
|
|
|
|
default: /* Should not be possible, but just in case */
|
|
VNC_DEBUG("Reject auth %d server code bug\n", vs->auth);
|
|
vnc_write_u8(vs, 1);
|
|
if (vs->minor >= 8) {
|
|
static const char err[] = "Authentication failed";
|
|
vnc_write_u32(vs, sizeof(err));
|
|
vnc_write(vs, err, sizeof(err));
|
|
}
|
|
vnc_client_error(vs);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int protocol_version(VncState *vs, uint8_t *version, size_t len)
|
|
{
|
|
char local[13];
|
|
|
|
memcpy(local, version, 12);
|
|
local[12] = 0;
|
|
|
|
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
|
|
VNC_DEBUG("Malformed protocol version %s\n", local);
|
|
vnc_client_error(vs);
|
|
return 0;
|
|
}
|
|
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
|
if (vs->major != 3 ||
|
|
(vs->minor != 3 &&
|
|
vs->minor != 4 &&
|
|
vs->minor != 5 &&
|
|
vs->minor != 7 &&
|
|
vs->minor != 8)) {
|
|
VNC_DEBUG("Unsupported client version\n");
|
|
vnc_write_u32(vs, VNC_AUTH_INVALID);
|
|
vnc_flush(vs);
|
|
vnc_client_error(vs);
|
|
return 0;
|
|
}
|
|
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
|
* as equivalent to v3.3 by servers
|
|
*/
|
|
if (vs->minor == 4 || vs->minor == 5)
|
|
vs->minor = 3;
|
|
|
|
if (vs->minor == 3) {
|
|
if (vs->auth == VNC_AUTH_NONE) {
|
|
VNC_DEBUG("Tell client auth none\n");
|
|
vnc_write_u32(vs, vs->auth);
|
|
vnc_flush(vs);
|
|
start_client_init(vs);
|
|
} else if (vs->auth == VNC_AUTH_VNC) {
|
|
VNC_DEBUG("Tell client VNC auth\n");
|
|
vnc_write_u32(vs, vs->auth);
|
|
vnc_flush(vs);
|
|
start_auth_vnc(vs);
|
|
} else {
|
|
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
|
|
vnc_write_u32(vs, VNC_AUTH_INVALID);
|
|
vnc_flush(vs);
|
|
vnc_client_error(vs);
|
|
}
|
|
} else {
|
|
VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
|
|
vnc_write_u8(vs, 1); /* num auth */
|
|
vnc_write_u8(vs, vs->auth);
|
|
vnc_read_when(vs, protocol_client_auth, 1);
|
|
vnc_flush(vs);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static VncRectStat *vnc_stat_rect(VncDisplay *vd, int x, int y)
|
|
{
|
|
struct VncSurface *vs = &vd->guest;
|
|
|
|
return &vs->stats[y / VNC_STAT_RECT][x / VNC_STAT_RECT];
|
|
}
|
|
|
|
void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h)
|
|
{
|
|
int i, j;
|
|
|
|
w = (x + w) / VNC_STAT_RECT;
|
|
h = (y + h) / VNC_STAT_RECT;
|
|
x /= VNC_STAT_RECT;
|
|
y /= VNC_STAT_RECT;
|
|
|
|
for (j = y; j <= h; j++) {
|
|
for (i = x; i <= w; i++) {
|
|
vs->lossy_rect[j][i] = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y)
|
|
{
|
|
VncState *vs;
|
|
int sty = y / VNC_STAT_RECT;
|
|
int stx = x / VNC_STAT_RECT;
|
|
int has_dirty = 0;
|
|
|
|
y = y / VNC_STAT_RECT * VNC_STAT_RECT;
|
|
x = x / VNC_STAT_RECT * VNC_STAT_RECT;
|
|
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
int j;
|
|
|
|
/* kernel send buffers are full -> refresh later */
|
|
if (vs->output.offset) {
|
|
continue;
|
|
}
|
|
|
|
if (!vs->lossy_rect[sty][stx]) {
|
|
continue;
|
|
}
|
|
|
|
vs->lossy_rect[sty][stx] = 0;
|
|
for (j = 0; j < VNC_STAT_RECT; ++j) {
|
|
bitmap_set(vs->dirty[y + j], x / 16, VNC_STAT_RECT / 16);
|
|
}
|
|
has_dirty++;
|
|
}
|
|
|
|
return has_dirty;
|
|
}
|
|
|
|
static int vnc_update_stats(VncDisplay *vd, struct timeval * tv)
|
|
{
|
|
int x, y;
|
|
struct timeval res;
|
|
int has_dirty = 0;
|
|
|
|
for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) {
|
|
for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) {
|
|
VncRectStat *rect = vnc_stat_rect(vd, x, y);
|
|
|
|
rect->updated = false;
|
|
}
|
|
}
|
|
|
|
qemu_timersub(tv, &VNC_REFRESH_STATS, &res);
|
|
|
|
if (timercmp(&vd->guest.last_freq_check, &res, >)) {
|
|
return has_dirty;
|
|
}
|
|
vd->guest.last_freq_check = *tv;
|
|
|
|
for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) {
|
|
for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) {
|
|
VncRectStat *rect= vnc_stat_rect(vd, x, y);
|
|
int count = ARRAY_SIZE(rect->times);
|
|
struct timeval min, max;
|
|
|
|
if (!timerisset(&rect->times[count - 1])) {
|
|
continue ;
|
|
}
|
|
|
|
max = rect->times[(rect->idx + count - 1) % count];
|
|
qemu_timersub(tv, &max, &res);
|
|
|
|
if (timercmp(&res, &VNC_REFRESH_LOSSY, >)) {
|
|
rect->freq = 0;
|
|
has_dirty += vnc_refresh_lossy_rect(vd, x, y);
|
|
memset(rect->times, 0, sizeof (rect->times));
|
|
continue ;
|
|
}
|
|
|
|
min = rect->times[rect->idx];
|
|
max = rect->times[(rect->idx + count - 1) % count];
|
|
qemu_timersub(&max, &min, &res);
|
|
|
|
rect->freq = res.tv_sec + res.tv_usec / 1000000.;
|
|
rect->freq /= count;
|
|
rect->freq = 1. / rect->freq;
|
|
}
|
|
}
|
|
return has_dirty;
|
|
}
|
|
|
|
double vnc_update_freq(VncState *vs, int x, int y, int w, int h)
|
|
{
|
|
int i, j;
|
|
double total = 0;
|
|
int num = 0;
|
|
|
|
x = (x / VNC_STAT_RECT) * VNC_STAT_RECT;
|
|
y = (y / VNC_STAT_RECT) * VNC_STAT_RECT;
|
|
|
|
for (j = y; j <= y + h; j += VNC_STAT_RECT) {
|
|
for (i = x; i <= x + w; i += VNC_STAT_RECT) {
|
|
total += vnc_stat_rect(vs->vd, i, j)->freq;
|
|
num++;
|
|
}
|
|
}
|
|
|
|
if (num) {
|
|
return total / num;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void vnc_rect_updated(VncDisplay *vd, int x, int y, struct timeval * tv)
|
|
{
|
|
VncRectStat *rect;
|
|
|
|
rect = vnc_stat_rect(vd, x, y);
|
|
if (rect->updated) {
|
|
return ;
|
|
}
|
|
rect->times[rect->idx] = *tv;
|
|
rect->idx = (rect->idx + 1) % ARRAY_SIZE(rect->times);
|
|
rect->updated = true;
|
|
}
|
|
|
|
static int vnc_refresh_server_surface(VncDisplay *vd)
|
|
{
|
|
int y;
|
|
uint8_t *guest_row;
|
|
uint8_t *server_row;
|
|
int cmp_bytes;
|
|
VncState *vs;
|
|
int has_dirty = 0;
|
|
|
|
struct timeval tv = { 0, 0 };
|
|
|
|
if (!vd->non_adaptive) {
|
|
gettimeofday(&tv, NULL);
|
|
has_dirty = vnc_update_stats(vd, &tv);
|
|
}
|
|
|
|
/*
|
|
* Walk through the guest dirty map.
|
|
* Check and copy modified bits from guest to server surface.
|
|
* Update server dirty map.
|
|
*/
|
|
cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
|
|
if (cmp_bytes > vd->ds->surface->linesize) {
|
|
cmp_bytes = vd->ds->surface->linesize;
|
|
}
|
|
guest_row = vd->guest.ds->data;
|
|
server_row = vd->server->data;
|
|
for (y = 0; y < vd->guest.ds->height; y++) {
|
|
if (!bitmap_empty(vd->guest.dirty[y], VNC_DIRTY_BITS)) {
|
|
int x;
|
|
uint8_t *guest_ptr;
|
|
uint8_t *server_ptr;
|
|
|
|
guest_ptr = guest_row;
|
|
server_ptr = server_row;
|
|
|
|
for (x = 0; x + 15 < vd->guest.ds->width;
|
|
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
|
if (!test_and_clear_bit((x / 16), vd->guest.dirty[y]))
|
|
continue;
|
|
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
|
|
continue;
|
|
memcpy(server_ptr, guest_ptr, cmp_bytes);
|
|
if (!vd->non_adaptive)
|
|
vnc_rect_updated(vd, x, y, &tv);
|
|
QTAILQ_FOREACH(vs, &vd->clients, next) {
|
|
set_bit((x / 16), vs->dirty[y]);
|
|
}
|
|
has_dirty++;
|
|
}
|
|
}
|
|
guest_row += ds_get_linesize(vd->ds);
|
|
server_row += ds_get_linesize(vd->ds);
|
|
}
|
|
return has_dirty;
|
|
}
|
|
|
|
static void vnc_refresh(void *opaque)
|
|
{
|
|
VncDisplay *vd = opaque;
|
|
VncState *vs, *vn;
|
|
int has_dirty, rects = 0;
|
|
|
|
vga_hw_update();
|
|
|
|
if (vnc_trylock_display(vd)) {
|
|
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
|
|
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) +
|
|
vd->timer_interval);
|
|
return;
|
|
}
|
|
|
|
has_dirty = vnc_refresh_server_surface(vd);
|
|
vnc_unlock_display(vd);
|
|
|
|
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) {
|
|
rects += vnc_update_client(vs, has_dirty);
|
|
/* vs might be free()ed here */
|
|
}
|
|
|
|
/* vd->timer could be NULL now if the last client disconnected,
|
|
* in this case don't update the timer */
|
|
if (vd->timer == NULL)
|
|
return;
|
|
|
|
if (has_dirty && rects) {
|
|
vd->timer_interval /= 2;
|
|
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
|
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
|
|
} else {
|
|
vd->timer_interval += VNC_REFRESH_INTERVAL_INC;
|
|
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
|
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX;
|
|
}
|
|
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval);
|
|
}
|
|
|
|
static void vnc_init_timer(VncDisplay *vd)
|
|
{
|
|
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
|
|
if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) {
|
|
vd->timer = qemu_new_timer_ms(rt_clock, vnc_refresh, vd);
|
|
vnc_dpy_resize(vd->ds);
|
|
vnc_refresh(vd);
|
|
}
|
|
}
|
|
|
|
static void vnc_remove_timer(VncDisplay *vd)
|
|
{
|
|
if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) {
|
|
qemu_del_timer(vd->timer);
|
|
qemu_free_timer(vd->timer);
|
|
vd->timer = NULL;
|
|
}
|
|
}
|
|
|
|
static void vnc_connect(VncDisplay *vd, int csock, int skipauth)
|
|
{
|
|
VncState *vs = g_malloc0(sizeof(VncState));
|
|
int i;
|
|
|
|
vs->csock = csock;
|
|
|
|
if (skipauth) {
|
|
vs->auth = VNC_AUTH_NONE;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = VNC_AUTH_INVALID;
|
|
#endif
|
|
} else {
|
|
vs->auth = vd->auth;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = vd->subauth;
|
|
#endif
|
|
}
|
|
|
|
vs->lossy_rect = g_malloc0(VNC_STAT_ROWS * sizeof (*vs->lossy_rect));
|
|
for (i = 0; i < VNC_STAT_ROWS; ++i) {
|
|
vs->lossy_rect[i] = g_malloc0(VNC_STAT_COLS * sizeof (uint8_t));
|
|
}
|
|
|
|
VNC_DEBUG("New client on socket %d\n", csock);
|
|
dcl->idle = 0;
|
|
socket_set_nonblock(vs->csock);
|
|
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
|
|
|
|
vnc_client_cache_addr(vs);
|
|
vnc_qmp_event(vs, QEVENT_VNC_CONNECTED);
|
|
vnc_set_share_mode(vs, VNC_SHARE_MODE_CONNECTING);
|
|
|
|
vs->vd = vd;
|
|
vs->ds = vd->ds;
|
|
vs->last_x = -1;
|
|
vs->last_y = -1;
|
|
|
|
vs->as.freq = 44100;
|
|
vs->as.nchannels = 2;
|
|
vs->as.fmt = AUD_FMT_S16;
|
|
vs->as.endianness = 0;
|
|
|
|
qemu_mutex_init(&vs->output_mutex);
|
|
vs->bh = qemu_bh_new(vnc_jobs_bh, vs);
|
|
|
|
QTAILQ_INSERT_HEAD(&vd->clients, vs, next);
|
|
|
|
vga_hw_update();
|
|
|
|
vnc_write(vs, "RFB 003.008\n", 12);
|
|
vnc_flush(vs);
|
|
vnc_read_when(vs, protocol_version, 12);
|
|
reset_keys(vs);
|
|
if (vs->vd->lock_key_sync)
|
|
vs->led = qemu_add_led_event_handler(kbd_leds, vs);
|
|
|
|
vs->mouse_mode_notifier.notify = check_pointer_type_change;
|
|
qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
|
|
|
|
vnc_init_timer(vd);
|
|
|
|
/* vs might be free()ed here */
|
|
}
|
|
|
|
static void vnc_listen_read(void *opaque)
|
|
{
|
|
VncDisplay *vs = opaque;
|
|
struct sockaddr_in addr;
|
|
socklen_t addrlen = sizeof(addr);
|
|
|
|
/* Catch-up */
|
|
vga_hw_update();
|
|
|
|
int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
|
|
if (csock != -1) {
|
|
vnc_connect(vs, csock, 0);
|
|
}
|
|
}
|
|
|
|
void vnc_display_init(DisplayState *ds)
|
|
{
|
|
VncDisplay *vs = g_malloc0(sizeof(*vs));
|
|
|
|
dcl = g_malloc0(sizeof(DisplayChangeListener));
|
|
|
|
ds->opaque = vs;
|
|
dcl->idle = 1;
|
|
vnc_display = vs;
|
|
|
|
vs->lsock = -1;
|
|
|
|
vs->ds = ds;
|
|
QTAILQ_INIT(&vs->clients);
|
|
vs->expires = TIME_MAX;
|
|
|
|
if (keyboard_layout)
|
|
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
|
|
else
|
|
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
|
|
|
if (!vs->kbd_layout)
|
|
exit(1);
|
|
|
|
qemu_mutex_init(&vs->mutex);
|
|
vnc_start_worker_thread();
|
|
|
|
dcl->dpy_copy = vnc_dpy_copy;
|
|
dcl->dpy_update = vnc_dpy_update;
|
|
dcl->dpy_resize = vnc_dpy_resize;
|
|
dcl->dpy_setdata = vnc_dpy_setdata;
|
|
register_displaychangelistener(ds, dcl);
|
|
ds->mouse_set = vnc_mouse_set;
|
|
ds->cursor_define = vnc_dpy_cursor_define;
|
|
}
|
|
|
|
|
|
void vnc_display_close(DisplayState *ds)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
if (!vs)
|
|
return;
|
|
if (vs->display) {
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
}
|
|
if (vs->lsock != -1) {
|
|
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
|
|
close(vs->lsock);
|
|
vs->lsock = -1;
|
|
}
|
|
vs->auth = VNC_AUTH_INVALID;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = VNC_AUTH_INVALID;
|
|
vs->tls.x509verify = 0;
|
|
#endif
|
|
}
|
|
|
|
int vnc_display_disable_login(DisplayState *ds)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
if (!vs) {
|
|
return -1;
|
|
}
|
|
|
|
if (vs->password) {
|
|
g_free(vs->password);
|
|
}
|
|
|
|
vs->password = NULL;
|
|
if (vs->auth == VNC_AUTH_NONE) {
|
|
vs->auth = VNC_AUTH_VNC;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int vnc_display_password(DisplayState *ds, const char *password)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
if (!vs) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!password) {
|
|
/* This is not the intention of this interface but err on the side
|
|
of being safe */
|
|
return vnc_display_disable_login(ds);
|
|
}
|
|
|
|
if (vs->password) {
|
|
g_free(vs->password);
|
|
vs->password = NULL;
|
|
}
|
|
vs->password = g_strdup(password);
|
|
if (vs->auth == VNC_AUTH_NONE) {
|
|
vs->auth = VNC_AUTH_VNC;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int vnc_display_pw_expire(DisplayState *ds, time_t expires)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
if (!vs) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
vs->expires = expires;
|
|
return 0;
|
|
}
|
|
|
|
char *vnc_display_local_addr(DisplayState *ds)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
return vnc_socket_local_addr("%s:%s", vs->lsock);
|
|
}
|
|
|
|
int vnc_display_open(DisplayState *ds, const char *display)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
const char *options;
|
|
int password = 0;
|
|
int reverse = 0;
|
|
#ifdef CONFIG_VNC_TLS
|
|
int tls = 0, x509 = 0;
|
|
#endif
|
|
#ifdef CONFIG_VNC_SASL
|
|
int sasl = 0;
|
|
int saslErr;
|
|
#endif
|
|
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
|
int acl = 0;
|
|
#endif
|
|
int lock_key_sync = 1;
|
|
|
|
if (!vnc_display)
|
|
return -1;
|
|
vnc_display_close(ds);
|
|
if (strcmp(display, "none") == 0)
|
|
return 0;
|
|
|
|
if (!(vs->display = strdup(display)))
|
|
return -1;
|
|
vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
|
|
|
|
options = display;
|
|
while ((options = strchr(options, ','))) {
|
|
options++;
|
|
if (strncmp(options, "password", 8) == 0) {
|
|
if (fips_get_state()) {
|
|
fprintf(stderr,
|
|
"VNC password auth disabled due to FIPS mode, "
|
|
"consider using the VeNCrypt or SASL authentication "
|
|
"methods as an alternative\n");
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
}
|
|
password = 1; /* Require password auth */
|
|
} else if (strncmp(options, "reverse", 7) == 0) {
|
|
reverse = 1;
|
|
} else if (strncmp(options, "no-lock-key-sync", 16) == 0) {
|
|
lock_key_sync = 0;
|
|
#ifdef CONFIG_VNC_SASL
|
|
} else if (strncmp(options, "sasl", 4) == 0) {
|
|
sasl = 1; /* Require SASL auth */
|
|
#endif
|
|
#ifdef CONFIG_VNC_TLS
|
|
} else if (strncmp(options, "tls", 3) == 0) {
|
|
tls = 1; /* Require TLS */
|
|
} else if (strncmp(options, "x509", 4) == 0) {
|
|
char *start, *end;
|
|
x509 = 1; /* Require x509 certificates */
|
|
if (strncmp(options, "x509verify", 10) == 0)
|
|
vs->tls.x509verify = 1; /* ...and verify client certs */
|
|
|
|
/* Now check for 'x509=/some/path' postfix
|
|
* and use that to setup x509 certificate/key paths */
|
|
start = strchr(options, '=');
|
|
end = strchr(options, ',');
|
|
if (start && (!end || (start < end))) {
|
|
int len = end ? end-(start+1) : strlen(start+1);
|
|
char *path = g_strndup(start + 1, len);
|
|
|
|
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
|
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) {
|
|
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
|
g_free(path);
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
}
|
|
g_free(path);
|
|
} else {
|
|
fprintf(stderr, "No certificate path provided\n");
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
}
|
|
#endif
|
|
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
|
} else if (strncmp(options, "acl", 3) == 0) {
|
|
acl = 1;
|
|
#endif
|
|
} else if (strncmp(options, "lossy", 5) == 0) {
|
|
vs->lossy = true;
|
|
} else if (strncmp(options, "non-adapative", 13) == 0) {
|
|
vs->non_adaptive = true;
|
|
} else if (strncmp(options, "share=", 6) == 0) {
|
|
if (strncmp(options+6, "ignore", 6) == 0) {
|
|
vs->share_policy = VNC_SHARE_POLICY_IGNORE;
|
|
} else if (strncmp(options+6, "allow-exclusive", 15) == 0) {
|
|
vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE;
|
|
} else if (strncmp(options+6, "force-shared", 12) == 0) {
|
|
vs->share_policy = VNC_SHARE_POLICY_FORCE_SHARED;
|
|
} else {
|
|
fprintf(stderr, "unknown vnc share= option\n");
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (acl && x509 && vs->tls.x509verify) {
|
|
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) {
|
|
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_VNC_SASL
|
|
if (acl && sasl) {
|
|
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) {
|
|
fprintf(stderr, "Failed to create username ACL\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Combinations we support here:
|
|
*
|
|
* - no-auth (clear text, no auth)
|
|
* - password (clear text, weak auth)
|
|
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
|
* - tls (encrypt, weak anonymous creds, no auth)
|
|
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
|
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
|
* - tls + x509 (encrypt, good x509 creds, no auth)
|
|
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
|
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
|
*
|
|
* NB1. TLS is a stackable auth scheme.
|
|
* NB2. the x509 schemes have option to validate a client cert dname
|
|
*/
|
|
if (password) {
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (tls) {
|
|
vs->auth = VNC_AUTH_VENCRYPT;
|
|
if (x509) {
|
|
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
|
|
} else {
|
|
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
|
|
}
|
|
} else {
|
|
#endif /* CONFIG_VNC_TLS */
|
|
VNC_DEBUG("Initializing VNC server with password auth\n");
|
|
vs->auth = VNC_AUTH_VNC;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = VNC_AUTH_INVALID;
|
|
}
|
|
#endif /* CONFIG_VNC_TLS */
|
|
#ifdef CONFIG_VNC_SASL
|
|
} else if (sasl) {
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (tls) {
|
|
vs->auth = VNC_AUTH_VENCRYPT;
|
|
if (x509) {
|
|
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL;
|
|
} else {
|
|
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL;
|
|
}
|
|
} else {
|
|
#endif /* CONFIG_VNC_TLS */
|
|
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
|
vs->auth = VNC_AUTH_SASL;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = VNC_AUTH_INVALID;
|
|
}
|
|
#endif /* CONFIG_VNC_TLS */
|
|
#endif /* CONFIG_VNC_SASL */
|
|
} else {
|
|
#ifdef CONFIG_VNC_TLS
|
|
if (tls) {
|
|
vs->auth = VNC_AUTH_VENCRYPT;
|
|
if (x509) {
|
|
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
|
|
} else {
|
|
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
|
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
|
|
}
|
|
} else {
|
|
#endif
|
|
VNC_DEBUG("Initializing VNC server with no auth\n");
|
|
vs->auth = VNC_AUTH_NONE;
|
|
#ifdef CONFIG_VNC_TLS
|
|
vs->subauth = VNC_AUTH_INVALID;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_VNC_SASL
|
|
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) {
|
|
fprintf(stderr, "Failed to initialize SASL auth %s",
|
|
sasl_errstring(saslErr, NULL, NULL));
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
}
|
|
#endif
|
|
vs->lock_key_sync = lock_key_sync;
|
|
|
|
if (reverse) {
|
|
/* connect to viewer */
|
|
if (strncmp(display, "unix:", 5) == 0)
|
|
vs->lsock = unix_connect(display+5);
|
|
else
|
|
vs->lsock = inet_connect(display, true, NULL);
|
|
if (-1 == vs->lsock) {
|
|
g_free(vs->display);
|
|
vs->display = NULL;
|
|
return -1;
|
|
} else {
|
|
int csock = vs->lsock;
|
|
vs->lsock = -1;
|
|
vnc_connect(vs, csock, 0);
|
|
}
|
|
return 0;
|
|
|
|
} else {
|
|
/* listen for connects */
|
|
char *dpy;
|
|
dpy = g_malloc(256);
|
|
if (strncmp(display, "unix:", 5) == 0) {
|
|
pstrcpy(dpy, 256, "unix:");
|
|
vs->lsock = unix_listen(display+5, dpy+5, 256-5);
|
|
} else {
|
|
vs->lsock = inet_listen(display, dpy, 256,
|
|
SOCK_STREAM, 5900, NULL);
|
|
}
|
|
if (-1 == vs->lsock) {
|
|
g_free(dpy);
|
|
return -1;
|
|
} else {
|
|
g_free(vs->display);
|
|
vs->display = dpy;
|
|
}
|
|
}
|
|
return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
|
|
}
|
|
|
|
void vnc_display_add_client(DisplayState *ds, int csock, int skipauth)
|
|
{
|
|
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
|
|
|
|
vnc_connect(vs, csock, skipauth);
|
|
}
|