/
vnc-android.c
2402 lines (2110 loc) · 69.1 KB
/
vnc-android.c
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/*
* 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 "sysemu.h"
#include "qemu_socket.h"
#include "qemu-timer.h"
#include "acl.h"
#define VNC_REFRESH_INTERVAL (1000 / 30)
#include "vnc_keysym.h"
#include "d3des.h"
#define count_bits(c, v) { \
for (c = 0; v; v >>= 1) \
{ \
c += v & 1; \
} \
}
static VncDisplay *vnc_display; /* needed for info vnc */
static DisplayChangeListener *dcl;
static char *addr_to_string(const char *format, SockAddress* sa)
{
char *addr;
char host[256];
char serv[32];
int err;
size_t addrlen;
#if 1 /* ANDROID */
err = sock_address_get_numeric_info (sa, host, sizeof(host),
serv, sizeof(serv));
if (err != 0) {
VNC_DEBUG("Cannot resolve address '%s': %s\n",
sock_address_to_string(sa), errno_str);
return NULL;
}
#else
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;
}
#endif
/* Enough for the existing format + the 2 vars we're
* substituting in. */
addrlen = strlen(format) + strlen(host) + strlen(serv);
addr = qemu_malloc(addrlen + 1);
snprintf(addr, addrlen, format, host, serv);
addr[addrlen] = '\0';
return addr;
}
char *vnc_socket_local_addr(const char *format, int fd) {
SockAddress sa;
if (socket_get_address(fd, &sa) < 0)
return NULL;
return addr_to_string(format, &sa);
}
char *vnc_socket_remote_addr(const char *format, int fd) {
SockAddress sa;
if (socket_get_peer_address(fd, &sa) < 0)
return NULL;
return addr_to_string(format, &sa);
}
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 void do_info_vnc_client(Monitor *mon, VncState *client)
{
char *clientAddr =
vnc_socket_remote_addr(" address: %s:%s\n",
client->csock);
if (!clientAddr)
return;
monitor_printf(mon, "Client:\n");
monitor_printf(mon, "%s", clientAddr);
free(clientAddr);
#ifdef CONFIG_VNC_TLS
if (client->tls.session &&
client->tls.dname)
monitor_printf(mon, " x509 dname: %s\n", client->tls.dname);
else
monitor_printf(mon, " x509 dname: none\n");
#endif
#ifdef CONFIG_VNC_SASL
if (client->sasl.conn &&
client->sasl.username)
monitor_printf(mon, " username: %s\n", client->sasl.username);
else
monitor_printf(mon, " username: none\n");
#endif
}
void do_info_vnc(Monitor *mon)
{
if (vnc_display == NULL || vnc_display->display == NULL) {
monitor_printf(mon, "Server: disabled\n");
} else {
char *serverAddr = vnc_socket_local_addr(" address: %s:%s\n",
vnc_display->lsock);
if (!serverAddr)
return;
monitor_printf(mon, "Server:\n");
monitor_printf(mon, "%s", serverAddr);
free(serverAddr);
monitor_printf(mon, " auth: %s\n", vnc_auth_name(vnc_display));
if (vnc_display->clients) {
VncState *client = vnc_display->clients;
while (client) {
do_info_vnc_client(mon, client);
client = client->next;
}
} else {
monitor_printf(mon, "Client: none\n");
}
}
}
static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
return (vs->features & (1 << feature));
}
/* 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 void vnc_update_client(void *opaque);
static void vnc_disconnect_start(VncState *vs);
static void vnc_disconnect_finish(VncState *vs);
static void vnc_colordepth(VncState *vs);
static inline void vnc_set_bit(uint32_t *d, int k)
{
d[k >> 5] |= 1 << (k & 0x1f);
}
static inline void vnc_clear_bit(uint32_t *d, int k)
{
d[k >> 5] &= ~(1 << (k & 0x1f));
}
static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
{
int j;
j = 0;
while (n >= 32) {
d[j++] = -1;
n -= 32;
}
if (n > 0)
d[j++] = (1 << n) - 1;
while (j < nb_words)
d[j++] = 0;
}
static inline int vnc_get_bit(const uint32_t *d, int k)
{
return (d[k >> 5] >> (k & 0x1f)) & 1;
}
static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
int nb_words)
{
int i;
for(i = 0; i < nb_words; i++) {
if ((d1[i] & d2[i]) != 0)
return 1;
}
return 0;
}
static void vnc_update(VncState *vs, int x, int y, int w, int h)
{
struct VncSurface *s = &vs->guest;
int i;
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)
vnc_set_bit(s->dirty[y], (x + i) / 16);
}
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
{
VncDisplay *vd = ds->opaque;
VncState *vs = vd->clients;
while (vs != NULL) {
vnc_update(vs, x, y, w, h);
vs = vs->next;
}
}
static 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 = qemu_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_append(Buffer *buffer, const void *data, size_t len)
{
memcpy(buffer->buffer + buffer->offset, data, len);
buffer->offset += len;
}
static void vnc_resize(VncState *vs)
{
DisplayState *ds = vs->ds;
int size_changed;
/* guest surface */
if (!vs->guest.ds)
vs->guest.ds = qemu_mallocz(sizeof(*vs->guest.ds));
if (ds_get_bytes_per_pixel(ds) != vs->guest.ds->pf.bytes_per_pixel)
console_color_init(ds);
vnc_colordepth(vs);
size_changed = ds_get_width(ds) != vs->guest.ds->width ||
ds_get_height(ds) != vs->guest.ds->height;
*(vs->guest.ds) = *(ds->surface);
if (size_changed) {
if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
vnc_write_u8(vs, 0); /* msg id */
vnc_write_u8(vs, 0);
vnc_write_u16(vs, 1); /* number of rects */
vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds),
VNC_ENCODING_DESKTOPRESIZE);
vnc_flush(vs);
}
}
memset(vs->guest.dirty, 0xFF, sizeof(vs->guest.dirty));
/* server surface */
if (!vs->server.ds)
vs->server.ds = qemu_mallocz(sizeof(*vs->server.ds));
if (vs->server.ds->data)
qemu_free(vs->server.ds->data);
*(vs->server.ds) = *(ds->surface);
vs->server.ds->data = qemu_mallocz(vs->server.ds->linesize *
vs->server.ds->height);
memset(vs->server.dirty, 0xFF, sizeof(vs->guest.dirty));
}
static void vnc_dpy_resize(DisplayState *ds)
{
VncDisplay *vd = ds->opaque;
VncState *vs = vd->clients;
while (vs != NULL) {
vnc_resize(vs);
vs = vs->next;
}
}
/* fastest code */
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
{
vnc_write(vs, pixels, size);
}
/* slowest but generic code. */
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
{
uint8_t r, g, b;
r = ((((v & vs->server.ds->pf.rmask) >> vs->server.ds->pf.rshift) << vs->clientds.pf.rbits) >>
vs->server.ds->pf.rbits);
g = ((((v & vs->server.ds->pf.gmask) >> vs->server.ds->pf.gshift) << vs->clientds.pf.gbits) >>
vs->server.ds->pf.gbits);
b = ((((v & vs->server.ds->pf.bmask) >> vs->server.ds->pf.bshift) << vs->clientds.pf.bbits) >>
vs->server.ds->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, void *pixels1, int size)
{
uint8_t buf[4];
if (vs->server.ds->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 (vs->server.ds->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 (vs->server.ds->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");
}
}
static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
{
int i;
uint8_t *row;
row = vs->server.ds->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, row, w * ds_get_bytes_per_pixel(vs->ds));
row += ds_get_linesize(vs->ds);
}
}
static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
{
ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
}
#define BPP 8
#include "vnchextile.h"
#undef BPP
#define BPP 16
#include "vnchextile.h"
#undef BPP
#define BPP 32
#include "vnchextile.h"
#undef BPP
#define GENERIC
#define BPP 8
#include "vnchextile.h"
#undef BPP
#undef GENERIC
#define GENERIC
#define BPP 16
#include "vnchextile.h"
#undef BPP
#undef GENERIC
#define GENERIC
#define BPP 32
#include "vnchextile.h"
#undef BPP
#undef GENERIC
static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
{
int i, j;
int has_fg, has_bg;
uint8_t *last_fg, *last_bg;
last_fg = (uint8_t *) qemu_malloc(vs->server.ds->pf.bytes_per_pixel);
last_bg = (uint8_t *) qemu_malloc(vs->server.ds->pf.bytes_per_pixel);
has_fg = has_bg = 0;
for (j = y; j < (y + h); j += 16) {
for (i = x; i < (x + w); i += 16) {
vs->send_hextile_tile(vs, i, j,
MIN(16, x + w - i), MIN(16, y + h - j),
last_bg, last_fg, &has_bg, &has_fg);
}
}
free(last_fg);
free(last_bg);
}
static void vnc_zlib_init(VncState *vs)
{
int i;
for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++)
vs->zlib_stream[i].opaque = NULL;
}
static void vnc_zlib_start(VncState *vs)
{
buffer_reset(&vs->zlib);
// make the output buffer be the zlib buffer, so we can compress it later
vs->zlib_tmp = vs->output;
vs->output = vs->zlib;
}
static int vnc_zlib_stop(VncState *vs, int stream_id)
{
z_streamp zstream = &vs->zlib_stream[stream_id];
int previous_out;
// switch back to normal output/zlib buffers
vs->zlib = vs->output;
vs->output = vs->zlib_tmp;
// compress the zlib buffer
// initialize the stream
// XXX need one stream per session
if (zstream->opaque != vs) {
int err;
VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
zstream->zalloc = Z_NULL;
zstream->zfree = Z_NULL;
err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS,
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY);
if (err != Z_OK) {
fprintf(stderr, "VNC: error initializing zlib\n");
return -1;
}
zstream->opaque = vs;
}
// XXX what to do if tight_compression changed in between?
// reserve memory in output buffer
buffer_reserve(&vs->output, vs->zlib.offset + 64);
// set pointers
zstream->next_in = vs->zlib.buffer;
zstream->avail_in = vs->zlib.offset;
zstream->next_out = vs->output.buffer + vs->output.offset;
zstream->avail_out = vs->output.capacity - vs->output.offset;
zstream->data_type = Z_BINARY;
previous_out = zstream->total_out;
// start encoding
if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
fprintf(stderr, "VNC: error during zlib compression\n");
return -1;
}
vs->output.offset = vs->output.capacity - zstream->avail_out;
return zstream->total_out - previous_out;
}
static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h)
{
int old_offset, new_offset, bytes_written;
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB);
// remember where we put in the follow-up size
old_offset = vs->output.offset;
vnc_write_s32(vs, 0);
// compress the stream
vnc_zlib_start(vs);
send_framebuffer_update_raw(vs, x, y, w, h);
bytes_written = vnc_zlib_stop(vs, 0);
if (bytes_written == -1)
return;
// hack in the size
new_offset = vs->output.offset;
vs->output.offset = old_offset;
vnc_write_u32(vs, bytes_written);
vs->output.offset = new_offset;
}
static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
{
switch(vs->vnc_encoding) {
case VNC_ENCODING_ZLIB:
send_framebuffer_update_zlib(vs, x, y, w, h);
break;
case VNC_ENCODING_HEXTILE:
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE);
send_framebuffer_update_hextile(vs, x, y, w, h);
break;
default:
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW);
send_framebuffer_update_raw(vs, x, y, w, h);
break;
}
}
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
{
vnc_write_u8(vs, 0); /* msg id */
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_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;
for (vs = vd->clients; vs != NULL; vs = vn) {
vn = vs->next;
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
vs->force_update = 1;
vnc_update_client(vs);
/* vs might be free()ed here */
}
}
for (vs = vd->clients; vs != NULL; vs = vs->next) {
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
else /* TODO */
vnc_update(vs, dst_x, dst_y, w, h);
}
}
static int find_and_clear_dirty_height(struct VncSurface *s,
int y, int last_x, int x)
{
int h;
for (h = 1; h < (s->ds->height - y); h++) {
int tmp_x;
if (!vnc_get_bit(s->dirty[y + h], last_x))
break;
for (tmp_x = last_x; tmp_x < x; tmp_x++)
vnc_clear_bit(s->dirty[y + h], tmp_x);
}
return h;
}
static void vnc_update_client(void *opaque)
{
VncState *vs = opaque;
if (vs->need_update && vs->csock != -1) {
int y;
uint8_t *guest_row;
uint8_t *server_row;
int cmp_bytes;
uint32_t width_mask[VNC_DIRTY_WORDS];
int n_rectangles;
int saved_offset;
int has_dirty = 0;
if (vs->output.offset && !vs->audio_cap && !vs->force_update) {
/* kernel send buffers are full -> drop frames to throttle */
qemu_mod_timer(vs->timer, qemu_get_clock_ms(rt_clock) + VNC_REFRESH_INTERVAL);
return;
}
vga_hw_update();
/*
* Walk through the guest dirty map.
* Check and copy modified bits from guest to server surface.
* Update server dirty map.
*/
vnc_set_bits(width_mask, (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
cmp_bytes = 16 * ds_get_bytes_per_pixel(vs->ds);
guest_row = vs->guest.ds->data;
server_row = vs->server.ds->data;
for (y = 0; y < vs->guest.ds->height; y++) {
if (vnc_and_bits(vs->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
int x;
uint8_t *guest_ptr;
uint8_t *server_ptr;
guest_ptr = guest_row;
server_ptr = server_row;
for (x = 0; x < vs->guest.ds->width;
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
if (!vnc_get_bit(vs->guest.dirty[y], (x / 16)))
continue;
vnc_clear_bit(vs->guest.dirty[y], (x / 16));
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
continue;
memcpy(server_ptr, guest_ptr, cmp_bytes);
vnc_set_bit(vs->server.dirty[y], (x / 16));
has_dirty++;
}
}
guest_row += ds_get_linesize(vs->ds);
server_row += ds_get_linesize(vs->ds);
}
if (!has_dirty && !vs->audio_cap && !vs->force_update) {
qemu_mod_timer(vs->timer, qemu_get_clock_ms(rt_clock) + VNC_REFRESH_INTERVAL);
return;
}
/*
* 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.
*/
n_rectangles = 0;
vnc_write_u8(vs, 0); /* msg id */
vnc_write_u8(vs, 0);
saved_offset = vs->output.offset;
vnc_write_u16(vs, 0);
for (y = 0; y < vs->server.ds->height; y++) {
int x;
int last_x = -1;
for (x = 0; x < vs->server.ds->width / 16; x++) {
if (vnc_get_bit(vs->server.dirty[y], x)) {
if (last_x == -1) {
last_x = x;
}
vnc_clear_bit(vs->server.dirty[y], x);
} else {
if (last_x != -1) {
int h = find_and_clear_dirty_height(&vs->server, y, last_x, x);
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
n_rectangles++;
}
last_x = -1;
}
}
if (last_x != -1) {
int h = find_and_clear_dirty_height(&vs->server, y, last_x, x);
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
n_rectangles++;
}
}
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
vnc_flush(vs);
vs->force_update = 0;
}
if (vs->csock != -1) {
qemu_mod_timer(vs->timer, qemu_get_clock_ms(rt_clock) + VNC_REFRESH_INTERVAL);
} else {
vnc_disconnect_finish(vs);
}
}
/* audio */
static void audio_capture_notify(void *opaque, audcnotification_e cmd)
{
VncState *vs = opaque;
switch (cmd) {
case AUD_CNOTIFY_DISABLE:
vnc_write_u8(vs, 255);
vnc_write_u8(vs, 1);
vnc_write_u16(vs, 0);
vnc_flush(vs);
break;
case AUD_CNOTIFY_ENABLE:
vnc_write_u8(vs, 255);
vnc_write_u8(vs, 1);
vnc_write_u16(vs, 1);
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_write_u8(vs, 255);
vnc_write_u8(vs, 1);
vnc_write_u16(vs, 2);
vnc_write_u32(vs, size);
vnc_write(vs, buf, size);
vnc_flush(vs);
}
static void audio_add(VncState *vs)
{
Monitor *mon = cur_mon;
struct audio_capture_ops ops;
if (vs->audio_cap) {
monitor_printf(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(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;
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
closesocket(vs->csock);
vs->csock = -1;
}
static void vnc_disconnect_finish(VncState *vs)
{
qemu_del_timer(vs->timer);
qemu_free_timer(vs->timer);
if (vs->input.buffer) qemu_free(vs->input.buffer);
if (vs->output.buffer) qemu_free(vs->output.buffer);
#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);
VncState *p, *parent = NULL;
for (p = vs->vd->clients; p != NULL; p = p->next) {
if (p == vs) {
if (parent)
parent->next = p->next;
else
vs->vd->clients = p->next;
break;
}
parent = p;
}
if (!vs->vd->clients)
dcl->idle = 1;
qemu_free(vs->server.ds->data);
qemu_free(vs->server.ds);
qemu_free(vs->guest.ds);
qemu_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 = socket_send(vs->csock, data, datalen);
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