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vnc: fix memory leak when vnc disconnect

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Currently when qemu receives a vnc connect, it creates a 'VncState' to
represent this connection. In 'vnc_worker_thread_loop' it creates a
local 'VncState'. The connection 'VcnState' and local 'VncState' exchange
data in 'vnc_async_encoding_start' and 'vnc_async_encoding_end'.
In 'zrle_compress_data' it calls 'deflateInit2' to allocate the libz library
opaque data. The 'VncState' used in 'zrle_compress_data' is the local
'VncState'. In 'vnc_zrle_clear' it calls 'deflateEnd' to free the libz
library opaque data. The 'VncState' used in 'vnc_zrle_clear' is the connection
'VncState'. In currently implementation there will be a memory leak when the
vnc disconnect. Following is the asan output backtrack:

Direct leak of 29760 byte(s) in 5 object(s) allocated from:
    0 0xffffa67ef3c3 in __interceptor_calloc (/lib64/libasan.so.4+0xd33c3)
    1 0xffffa65071cb in g_malloc0 (/lib64/libglib-2.0.so.0+0x571cb)
    2 0xffffa5e968f7 in deflateInit2_ (/lib64/libz.so.1+0x78f7)
    3 0xaaaacec58613 in zrle_compress_data ui/vnc-enc-zrle.c:87
    4 0xaaaacec58613 in zrle_send_framebuffer_update ui/vnc-enc-zrle.c:344
    5 0xaaaacec34e77 in vnc_send_framebuffer_update ui/vnc.c:919
    6 0xaaaacec5e023 in vnc_worker_thread_loop ui/vnc-jobs.c:271
    7 0xaaaacec5e5e7 in vnc_worker_thread ui/vnc-jobs.c:340
    8 0xaaaacee4d3c3 in qemu_thread_start util/qemu-thread-posix.c:502
    9 0xffffa544e8bb in start_thread (/lib64/libpthread.so.0+0x78bb)
    10 0xffffa53965cb in thread_start (/lib64/libc.so.6+0xd55cb)

This is because the opaque allocated in 'deflateInit2' is not freed in
'deflateEnd'. The reason is that the 'deflateEnd' calls 'deflateStateCheck'
and in the latter will check whether 's->strm != strm'(libz's data structure).
This check will be true so in 'deflateEnd' it just return 'Z_STREAM_ERROR' and
not free the data allocated in 'deflateInit2'.

The reason this happens is that the 'VncState' contains the whole 'VncZrle',
so when calling 'deflateInit2', the 's->strm' will be the local address.
So 's->strm != strm' will be true.

To fix this issue, we need to make 'zrle' of 'VncState' to be a pointer.
Then the connection 'VncState' and local 'VncState' exchange mechanism will
work as expection. The 'tight' of 'VncState' has the same issue, let's also turn
it to a pointer.

Reported-by: Ying Fang <fangying1@huawei.com>
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-id: 20190831153922.121308-1-liq3ea@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Li Qiang 2019-08-31 08:39:22 -07:00 committed by Gerd Hoffmann
parent 6105683da3
commit 6bf21f3d83
6 changed files with 170 additions and 162 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

219
ui/vnc-enc-tight.c
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@ -116,7 +116,7 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
static bool tight_can_send_png_rect(VncState *vs, int w, int h)
{
if (vs->tight.type != VNC_ENCODING_TIGHT_PNG) {
if (vs->tight->type != VNC_ENCODING_TIGHT_PNG) {
return false;
}
@ -144,7 +144,7 @@ tight_detect_smooth_image24(VncState *vs, int w, int h)
int pixels = 0;
int pix, left[3];
unsigned int errors;
unsigned char *buf = vs->tight.tight.buffer;
unsigned char *buf = vs->tight->tight.buffer;
/*
* If client is big-endian, color samples begin from the second
@ -215,7 +215,7 @@ tight_detect_smooth_image24(VncState *vs, int w, int h)
int pixels = 0; \
int sample, sum, left[3]; \
unsigned int errors; \
unsigned char *buf = vs->tight.tight.buffer; \
unsigned char *buf = vs->tight->tight.buffer; \
\
endian = 0; /* FIXME */ \
\
@ -296,8 +296,8 @@ static int
tight_detect_smooth_image(VncState *vs, int w, int h)
{
unsigned int errors;
int compression = vs->tight.compression;
int quality = vs->tight.quality;
int compression = vs->tight->compression;
int quality = vs->tight->quality;
if (!vs->vd->lossy) {
return 0;
@ -309,7 +309,7 @@ tight_detect_smooth_image(VncState *vs, int w, int h)
return 0;
}
if (vs->tight.quality != (uint8_t)-1) {
if (vs->tight->quality != (uint8_t)-1) {
if (w * h < VNC_TIGHT_JPEG_MIN_RECT_SIZE) {
return 0;
}
@ -320,9 +320,9 @@ tight_detect_smooth_image(VncState *vs, int w, int h)
}
if (vs->client_pf.bytes_per_pixel == 4) {
if (vs->tight.pixel24) {
if (vs->tight->pixel24) {
errors = tight_detect_smooth_image24(vs, w, h);
if (vs->tight.quality != (uint8_t)-1) {
if (vs->tight->quality != (uint8_t)-1) {
return (errors < tight_conf[quality].jpeg_threshold24);
}
return (errors < tight_conf[compression].gradient_threshold24);
@ -352,7 +352,7 @@ tight_detect_smooth_image(VncState *vs, int w, int h)
uint##bpp##_t c0, c1, ci; \
int i, n0, n1; \
\
data = (uint##bpp##_t *)vs->tight.tight.buffer; \
data = (uint##bpp##_t *)vs->tight->tight.buffer; \
\
c0 = data[0]; \
i = 1; \
@ -423,9 +423,9 @@ static int tight_fill_palette(VncState *vs, int x, int y,
{
int max;
max = count / tight_conf[vs->tight.compression].idx_max_colors_divisor;
max = count / tight_conf[vs->tight->compression].idx_max_colors_divisor;
if (max < 2 &&
count >= tight_conf[vs->tight.compression].mono_min_rect_size) {
count >= tight_conf[vs->tight->compression].mono_min_rect_size) {
max = 2;
}
if (max >= 256) {
@ -558,7 +558,7 @@ tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h)
int x, y, c;
buf32 = (uint32_t *)buf;
memset(vs->tight.gradient.buffer, 0, w * 3 * sizeof(int));
memset(vs->tight->gradient.buffer, 0, w * 3 * sizeof(int));
if (1 /* FIXME */) {
shift[0] = vs->client_pf.rshift;
@ -575,7 +575,7 @@ tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h)
upper[c] = 0;
here[c] = 0;
}
prev = (int *)vs->tight.gradient.buffer;
prev = (int *)vs->tight->gradient.buffer;
for (x = 0; x < w; x++) {
pix32 = *buf32++;
for (c = 0; c < 3; c++) {
@ -615,7 +615,7 @@ tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h)
int prediction; \
int x, y, c; \
\
memset (vs->tight.gradient.buffer, 0, w * 3 * sizeof(int)); \
memset(vs->tight->gradient.buffer, 0, w * 3 * sizeof(int)); \
\
endian = 0; /* FIXME */ \
\
@ -631,7 +631,7 @@ tight_filter_gradient24(VncState *vs, uint8_t *buf, int w, int h)
upper[c] = 0; \
here[c] = 0; \
} \
prev = (int *)vs->tight.gradient.buffer; \
prev = (int *)vs->tight->gradient.buffer; \
for (x = 0; x < w; x++) { \
pix = *buf; \
if (endian) { \
@ -785,7 +785,7 @@ static void extend_solid_area(VncState *vs, int x, int y, int w, int h,
static int tight_init_stream(VncState *vs, int stream_id,
int level, int strategy)
{
z_streamp zstream = &vs->tight.stream[stream_id];
z_streamp zstream = &vs->tight->stream[stream_id];
if (zstream->opaque == NULL) {
int err;
@ -803,15 +803,15 @@ static int tight_init_stream(VncState *vs, int stream_id,
return -1;
}
vs->tight.levels[stream_id] = level;
vs->tight->levels[stream_id] = level;
zstream->opaque = vs;
}
if (vs->tight.levels[stream_id] != level) {
if (vs->tight->levels[stream_id] != level) {
if (deflateParams(zstream, level, strategy) != Z_OK) {
return -1;
}
vs->tight.levels[stream_id] = level;
vs->tight->levels[stream_id] = level;
}
return 0;
}
@ -839,11 +839,11 @@ static void tight_send_compact_size(VncState *vs, size_t len)
static int tight_compress_data(VncState *vs, int stream_id, size_t bytes,
int level, int strategy)
{
z_streamp zstream = &vs->tight.stream[stream_id];
z_streamp zstream = &vs->tight->stream[stream_id];
int previous_out;
if (bytes < VNC_TIGHT_MIN_TO_COMPRESS) {
vnc_write(vs, vs->tight.tight.buffer, vs->tight.tight.offset);
vnc_write(vs, vs->tight->tight.buffer, vs->tight->tight.offset);
return bytes;
}
@ -852,13 +852,13 @@ static int tight_compress_data(VncState *vs, int stream_id, size_t bytes,
}
/* reserve memory in output buffer */
buffer_reserve(&vs->tight.zlib, bytes + 64);
buffer_reserve(&vs->tight->zlib, bytes + 64);
/* set pointers */
zstream->next_in = vs->tight.tight.buffer;
zstream->avail_in = vs->tight.tight.offset;
zstream->next_out = vs->tight.zlib.buffer + vs->tight.zlib.offset;
zstream->avail_out = vs->tight.zlib.capacity - vs->tight.zlib.offset;
zstream->next_in = vs->tight->tight.buffer;
zstream->avail_in = vs->tight->tight.offset;
zstream->next_out = vs->tight->zlib.buffer + vs->tight->zlib.offset;
zstream->avail_out = vs->tight->zlib.capacity - vs->tight->zlib.offset;
previous_out = zstream->avail_out;
zstream->data_type = Z_BINARY;
@ -868,14 +868,14 @@ static int tight_compress_data(VncState *vs, int stream_id, size_t bytes,
return -1;
}
vs->tight.zlib.offset = vs->tight.zlib.capacity - zstream->avail_out;
vs->tight->zlib.offset = vs->tight->zlib.capacity - zstream->avail_out;
/* ...how much data has actually been produced by deflate() */
bytes = previous_out - zstream->avail_out;
tight_send_compact_size(vs, bytes);
vnc_write(vs, vs->tight.zlib.buffer, bytes);
vnc_write(vs, vs->tight->zlib.buffer, bytes);
buffer_reset(&vs->tight.zlib);
buffer_reset(&vs->tight->zlib);
return bytes;
}
@ -927,16 +927,17 @@ static int send_full_color_rect(VncState *vs, int x, int y, int w, int h)
vnc_write_u8(vs, stream << 4); /* no flushing, no filter */
if (vs->tight.pixel24) {
tight_pack24(vs, vs->tight.tight.buffer, w * h, &vs->tight.tight.offset);
if (vs->tight->pixel24) {
tight_pack24(vs, vs->tight->tight.buffer, w * h,
&vs->tight->tight.offset);
bytes = 3;
} else {
bytes = vs->client_pf.bytes_per_pixel;
}
bytes = tight_compress_data(vs, stream, w * h * bytes,
tight_conf[vs->tight.compression].raw_zlib_level,
Z_DEFAULT_STRATEGY);
tight_conf[vs->tight->compression].raw_zlib_level,
Z_DEFAULT_STRATEGY);
return (bytes >= 0);
}
@ -947,14 +948,14 @@ static int send_solid_rect(VncState *vs)
vnc_write_u8(vs, VNC_TIGHT_FILL << 4); /* no flushing, no filter */
if (vs->tight.pixel24) {
tight_pack24(vs, vs->tight.tight.buffer, 1, &vs->tight.tight.offset);
if (vs->tight->pixel24) {
tight_pack24(vs, vs->tight->tight.buffer, 1, &vs->tight->tight.offset);
bytes = 3;
} else {
bytes = vs->client_pf.bytes_per_pixel;
}
vnc_write(vs, vs->tight.tight.buffer, bytes);
vnc_write(vs, vs->tight->tight.buffer, bytes);
return 1;
}
@ -963,7 +964,7 @@ static int send_mono_rect(VncState *vs, int x, int y,
{
ssize_t bytes;
int stream = 1;
int level = tight_conf[vs->tight.compression].mono_zlib_level;
int level = tight_conf[vs->tight->compression].mono_zlib_level;
#ifdef CONFIG_VNC_PNG
if (tight_can_send_png_rect(vs, w, h)) {
@ -991,26 +992,26 @@ static int send_mono_rect(VncState *vs, int x, int y,
uint32_t buf[2] = {bg, fg};
size_t ret = sizeof (buf);
if (vs->tight.pixel24) {
if (vs->tight->pixel24) {
tight_pack24(vs, (unsigned char*)buf, 2, &ret);
}
vnc_write(vs, buf, ret);
tight_encode_mono_rect32(vs->tight.tight.buffer, w, h, bg, fg);
tight_encode_mono_rect32(vs->tight->tight.buffer, w, h, bg, fg);
break;
}
case 2:
vnc_write(vs, &bg, 2);
vnc_write(vs, &fg, 2);
tight_encode_mono_rect16(vs->tight.tight.buffer, w, h, bg, fg);
tight_encode_mono_rect16(vs->tight->tight.buffer, w, h, bg, fg);
break;
default:
vnc_write_u8(vs, bg);
vnc_write_u8(vs, fg);
tight_encode_mono_rect8(vs->tight.tight.buffer, w, h, bg, fg);
tight_encode_mono_rect8(vs->tight->tight.buffer, w, h, bg, fg);
break;
}
vs->tight.tight.offset = bytes;
vs->tight->tight.offset = bytes;
bytes = tight_compress_data(vs, stream, bytes, level, Z_DEFAULT_STRATEGY);
return (bytes >= 0);
@ -1040,7 +1041,7 @@ static void write_palette(int idx, uint32_t color, void *opaque)
static bool send_gradient_rect(VncState *vs, int x, int y, int w, int h)
{
int stream = 3;
int level = tight_conf[vs->tight.compression].gradient_zlib_level;
int level = tight_conf[vs->tight->compression].gradient_zlib_level;
ssize_t bytes;
if (vs->client_pf.bytes_per_pixel == 1) {
@ -1050,23 +1051,23 @@ static bool send_gradient_rect(VncState *vs, int x, int y, int w, int h)
vnc_write_u8(vs, (stream | VNC_TIGHT_EXPLICIT_FILTER) << 4);
vnc_write_u8(vs, VNC_TIGHT_FILTER_GRADIENT);
buffer_reserve(&vs->tight.gradient, w * 3 * sizeof (int));
buffer_reserve(&vs->tight->gradient, w * 3 * sizeof(int));
if (vs->tight.pixel24) {
tight_filter_gradient24(vs, vs->tight.tight.buffer, w, h);
if (vs->tight->pixel24) {
tight_filter_gradient24(vs, vs->tight->tight.buffer, w, h);
bytes = 3;
} else if (vs->client_pf.bytes_per_pixel == 4) {
tight_filter_gradient32(vs, (uint32_t *)vs->tight.tight.buffer, w, h);
tight_filter_gradient32(vs, (uint32_t *)vs->tight->tight.buffer, w, h);
bytes = 4;
} else {
tight_filter_gradient16(vs, (uint16_t *)vs->tight.tight.buffer, w, h);
tight_filter_gradient16(vs, (uint16_t *)vs->tight->tight.buffer, w, h);
bytes = 2;
}
buffer_reset(&vs->tight.gradient);
buffer_reset(&vs->tight->gradient);
bytes = w * h * bytes;
vs->tight.tight.offset = bytes;
vs->tight->tight.offset = bytes;
bytes = tight_compress_data(vs, stream, bytes,
level, Z_FILTERED);
@ -1077,7 +1078,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
int w, int h, VncPalette *palette)
{
int stream = 2;
int level = tight_conf[vs->tight.compression].idx_zlib_level;
int level = tight_conf[vs->tight->compression].idx_zlib_level;
int colors;
ssize_t bytes;
@ -1104,12 +1105,12 @@ static int send_palette_rect(VncState *vs, int x, int y,
palette_iter(palette, write_palette, &priv);
vnc_write(vs, header, sizeof(header));
if (vs->tight.pixel24) {
if (vs->tight->pixel24) {
tight_pack24(vs, vs->output.buffer + old_offset, colors, &offset);
vs->output.offset = old_offset + offset;
}
tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette);
tight_encode_indexed_rect32(vs->tight->tight.buffer, w * h, palette);
break;
}
case 2:
@ -1119,7 +1120,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
palette_iter(palette, write_palette, &priv);
vnc_write(vs, header, sizeof(header));
tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette);
tight_encode_indexed_rect16(vs->tight->tight.buffer, w * h, palette);
break;
}
default:
@ -1127,7 +1128,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
break;
}
bytes = w * h;
vs->tight.tight.offset = bytes;
vs->tight->tight.offset = bytes;
bytes = tight_compress_data(vs, stream, bytes,
level, Z_DEFAULT_STRATEGY);
@ -1146,7 +1147,7 @@ static int send_palette_rect(VncState *vs, int x, int y,
static void jpeg_init_destination(j_compress_ptr cinfo)
{
VncState *vs = cinfo->client_data;
Buffer *buffer = &vs->tight.jpeg;
Buffer *buffer = &vs->tight->jpeg;
cinfo->dest->next_output_byte = (JOCTET *)buffer->buffer + buffer->offset;
cinfo->dest->free_in_buffer = (size_t)(buffer->capacity - buffer->offset);
@ -1156,7 +1157,7 @@ static void jpeg_init_destination(j_compress_ptr cinfo)
static boolean jpeg_empty_output_buffer(j_compress_ptr cinfo)
{
VncState *vs = cinfo->client_data;
Buffer *buffer = &vs->tight.jpeg;
Buffer *buffer = &vs->tight->jpeg;
buffer->offset = buffer->capacity;
buffer_reserve(buffer, 2048);
@ -1168,7 +1169,7 @@ static boolean jpeg_empty_output_buffer(j_compress_ptr cinfo)
static void jpeg_term_destination(j_compress_ptr cinfo)
{
VncState *vs = cinfo->client_data;
Buffer *buffer = &vs->tight.jpeg;
Buffer *buffer = &vs->tight->jpeg;
buffer->offset = buffer->capacity - cinfo->dest->free_in_buffer;
}
@ -1187,7 +1188,7 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
return send_full_color_rect(vs, x, y, w, h);
}
buffer_reserve(&vs->tight.jpeg, 2048);
buffer_reserve(&vs->tight->jpeg, 2048);
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
@ -1222,9 +1223,9 @@ static int send_jpeg_rect(VncState *vs, int x, int y, int w, int h, int quality)
vnc_write_u8(vs, VNC_TIGHT_JPEG << 4);
tight_send_compact_size(vs, vs->tight.jpeg.offset);
vnc_write(vs, vs->tight.jpeg.buffer, vs->tight.jpeg.offset);
buffer_reset(&vs->tight.jpeg);
tight_send_compact_size(vs, vs->tight->jpeg.offset);
vnc_write(vs, vs->tight->jpeg.buffer, vs->tight->jpeg.offset);
buffer_reset(&vs->tight->jpeg);
return 1;
}
@ -1240,7 +1241,7 @@ static void write_png_palette(int idx, uint32_t pix, void *opaque)
VncState *vs = priv->vs;
png_colorp color = &priv->png_palette[idx];
if (vs->tight.pixel24)
if (vs->tight->pixel24)
{
color->red = (pix >> vs->client_pf.rshift) & vs->client_pf.rmax;
color->green = (pix >> vs->client_pf.gshift) & vs->client_pf.gmax;
@ -1267,10 +1268,10 @@ static void png_write_data(png_structp png_ptr, png_bytep data,
{
VncState *vs = png_get_io_ptr(png_ptr);
buffer_reserve(&vs->tight.png, vs->tight.png.offset + length);
memcpy(vs->tight.png.buffer + vs->tight.png.offset, data, length);
buffer_reserve(&vs->tight->png, vs->tight->png.offset + length);
memcpy(vs->tight->png.buffer + vs->tight->png.offset, data, length);
vs->tight.png.offset += length;
vs->tight->png.offset += length;
}
static void png_flush_data(png_structp png_ptr)
@ -1295,8 +1296,8 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
png_infop info_ptr;
png_colorp png_palette = NULL;
pixman_image_t *linebuf;
int level = tight_png_conf[vs->tight.compression].png_zlib_level;
int filters = tight_png_conf[vs->tight.compression].png_filters;
int level = tight_png_conf[vs->tight->compression].png_zlib_level;
int filters = tight_png_conf[vs->tight->compression].png_filters;
uint8_t *buf;
int dy;
@ -1340,21 +1341,23 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
png_set_PLTE(png_ptr, info_ptr, png_palette, palette_size(palette));
if (vs->client_pf.bytes_per_pixel == 4) {
tight_encode_indexed_rect32(vs->tight.tight.buffer, w * h, palette);
tight_encode_indexed_rect32(vs->tight->tight.buffer, w * h,
palette);
} else {
tight_encode_indexed_rect16(vs->tight.tight.buffer, w * h, palette);
tight_encode_indexed_rect16(vs->tight->tight.buffer, w * h,
palette);
}
}
png_write_info(png_ptr, info_ptr);
buffer_reserve(&vs->tight.png, 2048);
buffer_reserve(&vs->tight->png, 2048);
linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, w);
buf = (uint8_t *)pixman_image_get_data(linebuf);
for (dy = 0; dy < h; dy++)
{
if (color_type == PNG_COLOR_TYPE_PALETTE) {
memcpy(buf, vs->tight.tight.buffer + (dy * w), w);
memcpy(buf, vs->tight->tight.buffer + (dy * w), w);
} else {
qemu_pixman_linebuf_fill(linebuf, vs->vd->server, w, x, y + dy);
}
@ -1372,27 +1375,27 @@ static int send_png_rect(VncState *vs, int x, int y, int w, int h,
vnc_write_u8(vs, VNC_TIGHT_PNG << 4);
tight_send_compact_size(vs, vs->tight.png.offset);
vnc_write(vs, vs->tight.png.buffer, vs->tight.png.offset);
buffer_reset(&vs->tight.png);
tight_send_compact_size(vs, vs->tight->png.offset);
vnc_write(vs, vs->tight->png.buffer, vs->tight->png.offset);
buffer_reset(&vs->tight->png);
return 1;
}
#endif /* CONFIG_VNC_PNG */
static void vnc_tight_start(VncState *vs)
{
buffer_reset(&vs->tight.tight);
buffer_reset(&vs->tight->tight);
// make the output buffer be the zlib buffer, so we can compress it later
vs->tight.tmp = vs->output;
vs->output = vs->tight.tight;
vs->tight->tmp = vs->output;
vs->output = vs->tight->tight;
}
static void vnc_tight_stop(VncState *vs)
{
// switch back to normal output/zlib buffers
vs->tight.tight = vs->output;
vs->output = vs->tight.tmp;
vs->tight->tight = vs->output;
vs->output = vs->tight->tmp;
}
static int send_sub_rect_nojpeg(VncState *vs, int x, int y, int w, int h,
@ -1426,9 +1429,9 @@ static int send_sub_rect_jpeg(VncState *vs, int x, int y, int w, int h,
int ret;
if (colors == 0) {
if (force || (tight_jpeg_conf[vs->tight.quality].jpeg_full &&
if (force || (tight_jpeg_conf[vs->tight->quality].jpeg_full &&
tight_detect_smooth_image(vs, w, h))) {
int quality = tight_conf[vs->tight.quality].jpeg_quality;
int quality = tight_conf[vs->tight->quality].jpeg_quality;
ret = send_jpeg_rect(vs, x, y, w, h, quality);
} else {
@ -1440,9 +1443,9 @@ static int send_sub_rect_jpeg(VncState *vs, int x, int y, int w, int h,
ret = send_mono_rect(vs, x, y, w, h, bg, fg);
} else if (colors <= 256) {
if (force || (colors > 96 &&
tight_jpeg_conf[vs->tight.quality].jpeg_idx &&
tight_jpeg_conf[vs->tight->quality].jpeg_idx &&
tight_detect_smooth_image(vs, w, h))) {
int quality = tight_conf[vs->tight.quality].jpeg_quality;
int quality = tight_conf[vs->tight->quality].jpeg_quality;
ret = send_jpeg_rect(vs, x, y, w, h, quality);
} else {
@ -1480,20 +1483,20 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
qemu_thread_atexit_add(&vnc_tight_cleanup_notifier);
}
vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type);
vnc_framebuffer_update(vs, x, y, w, h, vs->tight->type);
vnc_tight_start(vs);
vnc_raw_send_framebuffer_update(vs, x, y, w, h);
vnc_tight_stop(vs);
#ifdef CONFIG_VNC_JPEG
if (!vs->vd->non_adaptive && vs->tight.quality != (uint8_t)-1) {
if (!vs->vd->non_adaptive && vs->tight->quality != (uint8_t)-1) {
double freq = vnc_update_freq(vs, x, y, w, h);
if (freq < tight_jpeg_conf[vs->tight.quality].jpeg_freq_min) {
if (freq < tight_jpeg_conf[vs->tight->quality].jpeg_freq_min) {
allow_jpeg = false;
}
if (freq >= tight_jpeg_conf[vs->tight.quality].jpeg_freq_threshold) {
if (freq >= tight_jpeg_conf[vs->tight->quality].jpeg_freq_threshold) {
force_jpeg = true;
vnc_sent_lossy_rect(vs, x, y, w, h);
}
@ -1503,7 +1506,7 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
colors = tight_fill_palette(vs, x, y, w * h, &bg, &fg, color_count_palette);
#ifdef CONFIG_VNC_JPEG
if (allow_jpeg && vs->tight.quality != (uint8_t)-1) {
if (allow_jpeg && vs->tight->quality != (uint8_t)-1) {
ret = send_sub_rect_jpeg(vs, x, y, w, h, bg, fg, colors,
color_count_palette, force_jpeg);
} else {
@ -1520,7 +1523,7 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
static int send_sub_rect_solid(VncState *vs, int x, int y, int w, int h)
{
vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type);
vnc_framebuffer_update(vs, x, y, w, h, vs->tight->type);
vnc_tight_start(vs);
vnc_raw_send_framebuffer_update(vs, x, y, w, h);
@ -1538,8 +1541,8 @@ static int send_rect_simple(VncState *vs, int x, int y, int w, int h,
int rw, rh;
int n = 0;
max_size = tight_conf[vs->tight.compression].max_rect_size;
max_width = tight_conf[vs->tight.compression].max_rect_width;
max_size = tight_conf[vs->tight->compression].max_rect_size;
max_width = tight_conf[vs->tight->compression].max_rect_width;
if (split && (w > max_width || w * h > max_size)) {
max_sub_width = (w > max_width) ? max_width : w;
@ -1648,16 +1651,16 @@ static int tight_send_framebuffer_update(VncState *vs, int x, int y,
if (vs->client_pf.bytes_per_pixel == 4 && vs->client_pf.rmax == 0xFF &&
vs->client_pf.bmax == 0xFF && vs->client_pf.gmax == 0xFF) {
vs->tight.pixel24 = true;
vs->tight->pixel24 = true;
} else {
vs->tight.pixel24 = false;
vs->tight->pixel24 = false;
}
#ifdef CONFIG_VNC_JPEG
if (vs->tight.quality != (uint8_t)-1) {
if (vs->tight->quality != (uint8_t)-1) {
double freq = vnc_update_freq(vs, x, y, w, h);
if (freq > tight_jpeg_conf[vs->tight.quality].jpeg_freq_threshold) {
if (freq > tight_jpeg_conf[vs->tight->quality].jpeg_freq_threshold) {
return send_rect_simple(vs, x, y, w, h, false);
}
}
@ -1669,8 +1672,8 @@ static int tight_send_framebuffer_update(VncState *vs, int x, int y,
/* Calculate maximum number of rows in one non-solid rectangle. */
max_rows = tight_conf[vs->tight.compression].max_rect_size;
max_rows /= MIN(tight_conf[vs->tight.compression].max_rect_width, w);
max_rows = tight_conf[vs->tight->compression].max_rect_size;
max_rows /= MIN(tight_conf[vs->tight->compression].max_rect_width, w);
return find_large_solid_color_rect(vs, x, y, w, h, max_rows);
}
@ -1678,33 +1681,33 @@ static int tight_send_framebuffer_update(VncState *vs, int x, int y,
int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y,
int w, int h)
{
vs->tight.type = VNC_ENCODING_TIGHT;
vs->tight->type = VNC_ENCODING_TIGHT;
return tight_send_framebuffer_update(vs, x, y, w, h);
}
int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y,
int w, int h)
{
vs->tight.type = VNC_ENCODING_TIGHT_PNG;
vs->tight->type = VNC_ENCODING_TIGHT_PNG;
return tight_send_framebuffer_update(vs, x, y, w, h);
}
void vnc_tight_clear(VncState *vs)
{
int i;
for (i=0; i<ARRAY_SIZE(vs->tight.stream); i++) {
if (vs->tight.stream[i].opaque) {
deflateEnd(&vs->tight.stream[i]);
for (i = 0; i < ARRAY_SIZE(vs->tight->stream); i++) {
if (vs->tight->stream[i].opaque) {
deflateEnd(&vs->tight->stream[i]);
}
}
buffer_free(&vs->tight.tight);
buffer_free(&vs->tight.zlib);
buffer_free(&vs->tight.gradient);
buffer_free(&vs->tight->tight);
buffer_free(&vs->tight->zlib);
buffer_free(&vs->tight->gradient);
#ifdef CONFIG_VNC_JPEG
buffer_free(&vs->tight.jpeg);
buffer_free(&vs->tight->jpeg);
#endif
#ifdef CONFIG_VNC_PNG
buffer_free(&vs->tight.png);
buffer_free(&vs->tight->png);
#endif
}

11
ui/vnc-enc-zlib.c
View File

@ -76,7 +76,8 @@ static int vnc_zlib_stop(VncState *vs)
zstream->zalloc = vnc_zlib_zalloc;
zstream->zfree = vnc_zlib_zfree;
err = deflateInit2(zstream, vs->tight.compression, Z_DEFLATED, MAX_WBITS,
err = deflateInit2(zstream, vs->tight->compression, Z_DEFLATED,
MAX_WBITS,
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY);
if (err != Z_OK) {
@ -84,16 +85,16 @@ static int vnc_zlib_stop(VncState *vs)
return -1;
}
vs->zlib.level = vs->tight.compression;
vs->zlib.level = vs->tight->compression;
zstream->opaque = vs;
}
if (vs->tight.compression != vs->zlib.level) {
if (deflateParams(zstream, vs->tight.compression,
if (vs->tight->compression != vs->zlib.level) {
if (deflateParams(zstream, vs->tight->compression,
Z_DEFAULT_STRATEGY) != Z_OK) {
return -1;
}
vs->zlib.level = vs->tight.compression;
vs->zlib.level = vs->tight->compression;
}
// reserve memory in output buffer

68
ui/vnc-enc-zrle.c
View File

@ -37,18 +37,18 @@ static const int bits_per_packed_pixel[] = {
static void vnc_zrle_start(VncState *vs)
{
buffer_reset(&vs->zrle.zrle);
buffer_reset(&vs->zrle->zrle);
/* make the output buffer be the zlib buffer, so we can compress it later */
vs->zrle.tmp = vs->output;
vs->output = vs->zrle.zrle;
vs->zrle->tmp = vs->output;
vs->output = vs->zrle->zrle;
}
static void vnc_zrle_stop(VncState *vs)
{
/* switch back to normal output/zlib buffers */
vs->zrle.zrle = vs->output;
vs->output = vs->zrle.tmp;
vs->zrle->zrle = vs->output;
vs->output = vs->zrle->tmp;
}
static void *zrle_convert_fb(VncState *vs, int x, int y, int w, int h,
@ -56,24 +56,24 @@ static void *zrle_convert_fb(VncState *vs, int x, int y, int w, int h,
{
Buffer tmp;
buffer_reset(&vs->zrle.fb);
buffer_reserve(&vs->zrle.fb, w * h * bpp + bpp);
buffer_reset(&vs->zrle->fb);
buffer_reserve(&vs->zrle->fb, w * h * bpp + bpp);
tmp = vs->output;
vs->output = vs->zrle.fb;
vs->output = vs->zrle->fb;
vnc_raw_send_framebuffer_update(vs, x, y, w, h);
vs->zrle.fb = vs->output;
vs->zrle->fb = vs->output;
vs->output = tmp;
return vs->zrle.fb.buffer;
return vs->zrle->fb.buffer;
}
static int zrle_compress_data(VncState *vs, int level)
{
z_streamp zstream = &vs->zrle.stream;
z_streamp zstream = &vs->zrle->stream;
buffer_reset(&vs->zrle.zlib);
buffer_reset(&vs->zrle->zlib);
if (zstream->opaque != vs) {
int err;
@ -93,13 +93,13 @@ static int zrle_compress_data(VncState *vs, int level)
}
/* reserve memory in output buffer */
buffer_reserve(&vs->zrle.zlib, vs->zrle.zrle.offset + 64);
buffer_reserve(&vs->zrle->zlib, vs->zrle->zrle.offset + 64);
/* set pointers */
zstream->next_in = vs->zrle.zrle.buffer;
zstream->avail_in = vs->zrle.zrle.offset;
zstream->next_out = vs->zrle.zlib.buffer + vs->zrle.zlib.offset;
zstream->avail_out = vs->zrle.zlib.capacity - vs->zrle.zlib.offset;
zstream->next_in = vs->zrle->zrle.buffer;
zstream->avail_in = vs->zrle->zrle.offset;
zstream->next_out = vs->zrle->zlib.buffer + vs->zrle->zlib.offset;
zstream->avail_out = vs->zrle->zlib.capacity - vs->zrle->zlib.offset;
zstream->data_type = Z_BINARY;
/* start encoding */
@ -108,8 +108,8 @@ static int zrle_compress_data(VncState *vs, int level)
return -1;
}
vs->zrle.zlib.offset = vs->zrle.zlib.capacity - zstream->avail_out;
return vs->zrle.zlib.offset;
vs->zrle->zlib.offset = vs->zrle->zlib.capacity - zstream->avail_out;
return vs->zrle->zlib.offset;
}
/* Try to work out whether to use RLE and/or a palette. We do this by
@ -259,14 +259,14 @@ static int zrle_send_framebuffer_update(VncState *vs, int x, int y,
size_t bytes;
int zywrle_level;
if (vs->zrle.type == VNC_ENCODING_ZYWRLE) {
if (!vs->vd->lossy || vs->tight.quality == (uint8_t)-1
|| vs->tight.quality == 9) {
if (vs->zrle->type == VNC_ENCODING_ZYWRLE) {
if (!vs->vd->lossy || vs->tight->quality == (uint8_t)-1
|| vs->tight->quality == 9) {
zywrle_level = 0;
vs->zrle.type = VNC_ENCODING_ZRLE;
} else if (vs->tight.quality < 3) {
vs->zrle->type = VNC_ENCODING_ZRLE;
} else if (vs->tight->quality < 3) {
zywrle_level = 3;
} else if (vs->tight.quality < 6) {
} else if (vs->tight->quality < 6) {
zywrle_level = 2;
} else {
zywrle_level = 1;
@ -337,30 +337,30 @@ static int zrle_send_framebuffer_update(VncState *vs, int x, int y,
vnc_zrle_stop(vs);
bytes = zrle_compress_data(vs, Z_DEFAULT_COMPRESSION);
vnc_framebuffer_update(vs, x, y, w, h, vs->zrle.type);
vnc_framebuffer_update(vs, x, y, w, h, vs->zrle->type);
vnc_write_u32(vs, bytes);
vnc_write(vs, vs->zrle.zlib.buffer, vs->zrle.zlib.offset);
vnc_write(vs, vs->zrle->zlib.buffer, vs->zrle->zlib.offset);
return 1;
}
int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
{
vs->zrle.type = VNC_ENCODING_ZRLE;
vs->zrle->type = VNC_ENCODING_ZRLE;
return zrle_send_framebuffer_update(vs, x, y, w, h);
}
int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
{
vs->zrle.type = VNC_ENCODING_ZYWRLE;
vs->zrle->type = VNC_ENCODING_ZYWRLE;
return zrle_send_framebuffer_update(vs, x, y, w, h);
}
void vnc_zrle_clear(VncState *vs)
{
if (vs->zrle.stream.opaque) {
deflateEnd(&vs->zrle.stream);
if (vs->zrle->stream.opaque) {
deflateEnd(&vs->zrle->stream);
}
buffer_free(&vs->zrle.zrle);
buffer_free(&vs->zrle.fb);
buffer_free(&vs->zrle.zlib);
buffer_free(&vs->zrle->zrle);
buffer_free(&vs->zrle->fb);
buffer_free(&vs->zrle->zlib);
}

2
ui/vnc-enc-zrle.inc.c
View File

@ -96,7 +96,7 @@ static void ZRLE_ENCODE(VncState *vs, int x, int y, int w, int h,
static void ZRLE_ENCODE_TILE(VncState *vs, ZRLE_PIXEL *data, int w, int h,
int zywrle_level)
{
VncPalette *palette = &vs->zrle.palette;
VncPalette *palette = &vs->zrle->palette;
int runs = 0;
int single_pixels = 0;

28
ui/vnc.c
View File

@ -1307,6 +1307,8 @@ void vnc_disconnect_finish(VncState *vs)
object_unref(OBJECT(vs->sioc));
vs->sioc = NULL;
vs->magic = 0;
g_free(vs->zrle);
g_free(vs->tight);
g_free(vs);
}
@ -2058,8 +2060,8 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
vs->features = 0;
vs->vnc_encoding = 0;
vs->tight.compression = 9;
vs->tight.quality = -1; /* Lossless by default */
vs->tight->compression = 9;
vs->tight->quality = -1; /* Lossless by default */
vs->absolute = -1;
/*
@ -2127,11 +2129,11 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
vs->features |= VNC_FEATURE_LED_STATE_MASK;
break;
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9:
vs->tight.compression = (enc & 0x0F);
vs->tight->compression = (enc & 0x0F);
break;
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
if (vs->vd->lossy) {
vs->tight.quality = (enc & 0x0F);
vs->tight->quality = (enc & 0x0F);
}
break;
default:
@ -3034,6 +3036,8 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
int i;
trace_vnc_client_connect(vs, sioc);
vs->zrle = g_new0(VncZrle, 1);
vs->tight = g_new0(VncTight, 1);
vs->magic = VNC_MAGIC;
vs->sioc = sioc;
object_ref(OBJECT(vs->sioc));
@ -3045,19 +3049,19 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
buffer_init(&vs->output, "vnc-output/%p", sioc);
buffer_init(&vs->jobs_buffer, "vnc-jobs_buffer/%p", sioc);
buffer_init(&vs->tight.tight, "vnc-tight/%p", sioc);
buffer_init(&vs->tight.zlib, "vnc-tight-zlib/%p", sioc);
buffer_init(&vs->tight.gradient, "vnc-tight-gradient/%p", sioc);
buffer_init(&vs->tight->tight, "vnc-tight/%p", sioc);
buffer_init(&vs->tight->zlib, "vnc-tight-zlib/%p", sioc);
buffer_init(&vs->tight->gradient, "vnc-tight-gradient/%p", sioc);
#ifdef CONFIG_VNC_JPEG
buffer_init(&vs->tight.jpeg, "vnc-tight-jpeg/%p", sioc);
buffer_init(&vs->tight->jpeg, "vnc-tight-jpeg/%p", sioc);
#endif
#ifdef CONFIG_VNC_PNG
buffer_init(&vs->tight.png, "vnc-tight-png/%p", sioc);
buffer_init(&vs->tight->png, "vnc-tight-png/%p", sioc);
#endif
buffer_init(&vs->zlib.zlib, "vnc-zlib/%p", sioc);
buffer_init(&vs->zrle.zrle, "vnc-zrle/%p", sioc);
buffer_init(&vs->zrle.fb, "vnc-zrle-fb/%p", sioc);
buffer_init(&vs->zrle.zlib, "vnc-zrle-zlib/%p", sioc);
buffer_init(&vs->zrle->zrle, "vnc-zrle/%p", sioc);
buffer_init(&vs->zrle->fb, "vnc-zrle-fb/%p", sioc);
buffer_init(&vs->zrle->zlib, "vnc-zrle-zlib/%p", sioc);
if (skipauth) {
vs->auth = VNC_AUTH_NONE;

4
ui/vnc.h
View File

@ -338,10 +338,10 @@ struct VncState
/* Encoding specific, if you add something here, don't forget to
* update vnc_async_encoding_start()
*/
VncTight tight;
VncTight *tight;
VncZlib zlib;
VncHextile hextile;
VncZrle zrle;
VncZrle *zrle;
VncZywrle zywrle;
Notifier mouse_mode_notifier;