/*
* QEMU VNC display driver
- *
+ *
* 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
* THE SOFTWARE.
*/
-#include "vl.h"
+#include "vnc.h"
+#include "sysemu.h"
#include "qemu_socket.h"
+#include "qemu-timer.h"
+#include "acl.h"
-#define VNC_REFRESH_INTERVAL (1000 / 30)
+#define VNC_REFRESH_INTERVAL_BASE 30
+#define VNC_REFRESH_INTERVAL_INC 50
+#define VNC_REFRESH_INTERVAL_MAX 2000
#include "vnc_keysym.h"
-#include "keymaps.c"
#include "d3des.h"
-#if CONFIG_VNC_TLS
-#include <gnutls/gnutls.h>
-#include <gnutls/x509.h>
-#endif /* CONFIG_VNC_TLS */
-
-// #define _VNC_DEBUG 1
-
-#if _VNC_DEBUG
-#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
-
-#if CONFIG_VNC_TLS && _VNC_DEBUG >= 2
-/* Very verbose, so only enabled for _VNC_DEBUG >= 2 */
-static void vnc_debug_gnutls_log(int level, const char* str) {
- VNC_DEBUG("%d %s", level, str);
-}
-#endif /* CONFIG_VNC_TLS && _VNC_DEBUG */
+#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,
+ 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 = 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) {
+ 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 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
-#define VNC_DEBUG(fmt, ...) do { } while (0)
+ 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;
-typedef struct Buffer
-{
- size_t capacity;
- size_t offset;
- char *buffer;
-} Buffer;
-
-typedef struct VncState VncState;
-
-typedef int VncReadEvent(VncState *vs, char *data, size_t len);
-
-typedef void VncWritePixels(VncState *vs, void *data, int size);
-
-typedef void VncSendHextileTile(VncState *vs,
- int x, int y, int w, int h,
- uint32_t *last_bg,
- uint32_t *last_fg,
- int *has_bg, int *has_fg);
-
-#define VNC_MAX_WIDTH 2048
-#define VNC_MAX_HEIGHT 2048
-#define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
-
-#define VNC_AUTH_CHALLENGE_SIZE 16
-
-enum {
- VNC_AUTH_INVALID = 0,
- VNC_AUTH_NONE = 1,
- VNC_AUTH_VNC = 2,
- VNC_AUTH_RA2 = 5,
- VNC_AUTH_RA2NE = 6,
- VNC_AUTH_TIGHT = 16,
- VNC_AUTH_ULTRA = 17,
- VNC_AUTH_TLS = 18,
- VNC_AUTH_VENCRYPT = 19
-};
-
-#if CONFIG_VNC_TLS
-enum {
- VNC_WIREMODE_CLEAR,
- VNC_WIREMODE_TLS,
-};
-
-enum {
- VNC_AUTH_VENCRYPT_PLAIN = 256,
- VNC_AUTH_VENCRYPT_TLSNONE = 257,
- VNC_AUTH_VENCRYPT_TLSVNC = 258,
- VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
- VNC_AUTH_VENCRYPT_X509NONE = 260,
- VNC_AUTH_VENCRYPT_X509VNC = 261,
- VNC_AUTH_VENCRYPT_X509PLAIN = 262,
-};
-
-#if CONFIG_VNC_TLS
-#define X509_CA_CERT_FILE "ca-cert.pem"
-#define X509_CA_CRL_FILE "ca-crl.pem"
-#define X509_SERVER_KEY_FILE "server-key.pem"
-#define X509_SERVER_CERT_FILE "server-cert.pem"
-#endif
-
-#endif /* CONFIG_VNC_TLS */
+ monitor_printf(mon, "Client:\n");
+ monitor_printf(mon, "%s", clientAddr);
+ free(clientAddr);
-struct VncState
-{
- QEMUTimer *timer;
- int lsock;
- int csock;
- DisplayState *ds;
- int need_update;
- int width;
- int height;
- uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
- char *old_data;
- int depth; /* internal VNC frame buffer byte per pixel */
- int has_resize;
- int has_hextile;
- int has_pointer_type_change;
- int absolute;
- int last_x;
- int last_y;
-
- int major;
- int minor;
-
- char *display;
- char *password;
- int auth;
-#if CONFIG_VNC_TLS
- int subauth;
- int x509verify;
-
- char *x509cacert;
- char *x509cacrl;
- char *x509cert;
- char *x509key;
+#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
- char challenge[VNC_AUTH_CHALLENGE_SIZE];
-
-#if CONFIG_VNC_TLS
- int wiremode;
- gnutls_session_t tls_session;
+#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
+}
- Buffer output;
- Buffer input;
- kbd_layout_t *kbd_layout;
- /* current output mode information */
- VncWritePixels *write_pixels;
- VncSendHextileTile *send_hextile_tile;
- int pix_bpp, pix_big_endian;
- int red_shift, red_max, red_shift1;
- int green_shift, green_max, green_shift1;
- int blue_shift, blue_max, blue_shift1;
-
- VncReadEvent *read_handler;
- size_t read_handler_expect;
- /* input */
- uint8_t modifiers_state[256];
-};
+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);
-static VncState *vnc_state; /* needed for info vnc */
+ if (!serverAddr)
+ return;
-void do_info_vnc(void)
-{
- if (vnc_state == NULL)
- term_printf("VNC server disabled\n");
- else {
- term_printf("VNC server active on: ");
- term_print_filename(vnc_state->display);
- term_printf("\n");
+ 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_state->csock == -1)
- term_printf("No client connected\n");
- else
- term_printf("Client connected\n");
+ 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
3) resolutions > 1024
*/
-static void vnc_write(VncState *vs, const void *data, size_t len);
-static void vnc_write_u32(VncState *vs, uint32_t value);
-static void vnc_write_s32(VncState *vs, int32_t value);
-static void vnc_write_u16(VncState *vs, uint16_t value);
-static void vnc_write_u8(VncState *vs, uint8_t value);
-static void vnc_flush(VncState *vs);
-static void vnc_update_client(void *opaque);
-static void vnc_client_read(void *opaque);
+static int vnc_update_client(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 inline void vnc_set_bit(uint32_t *d, int k)
{
d[j++] = -1;
n -= 32;
}
- if (n > 0)
+ if (n > 0)
d[j++] = (1 << n) - 1;
while (j < nb_words)
d[j++] = 0;
return (d[k >> 5] >> (k & 0x1f)) & 1;
}
-static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
+static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
int nb_words)
{
int i;
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
{
- VncState *vs = ds->opaque;
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)
- vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
+ for (i = 0; i < w; i += 16)
+ vnc_set_bit(s->dirty[y], (x + i) / 16);
}
static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
- int32_t encoding)
+ int32_t encoding)
{
vnc_write_u16(vs, x);
vnc_write_u16(vs, y);
vnc_write_s32(vs, encoding);
}
-static void vnc_dpy_resize(DisplayState *ds, int w, int h)
+void buffer_reserve(Buffer *buffer, size_t len)
{
- int size_changed;
- VncState *vs = ds->opaque;
+ 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;
+}
- ds->data = realloc(ds->data, w * h * vs->depth);
- vs->old_data = realloc(vs->old_data, w * h * vs->depth);
+uint8_t *buffer_end(Buffer *buffer)
+{
+ return buffer->buffer + buffer->offset;
+}
- if (ds->data == NULL || vs->old_data == NULL) {
- fprintf(stderr, "vnc: memory allocation failed\n");
- exit(1);
- }
+void buffer_reset(Buffer *buffer)
+{
+ buffer->offset = 0;
+}
- ds->depth = vs->depth * 8;
- size_changed = ds->width != w || ds->height != h;
- ds->width = w;
- ds->height = h;
- ds->linesize = w * vs->depth;
- if (vs->csock != -1 && vs->has_resize && size_changed) {
- 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->width, ds->height, -223);
- vnc_flush(vs);
- vs->width = ds->width;
- vs->height = ds->height;
+void buffer_append(Buffer *buffer, const void *data, size_t len)
+{
+ memcpy(buffer->buffer + buffer->offset, data, len);
+ buffer->offset += len;
+}
+
+static void vnc_dpy_resize(DisplayState *ds)
+{
+ int size_changed;
+ VncDisplay *vd = ds->opaque;
+ VncState *vs = vd->clients;
+
+ /* server surface */
+ if (!vd->server)
+ vd->server = qemu_mallocz(sizeof(*vd->server));
+ if (vd->server->data)
+ qemu_free(vd->server->data);
+ *(vd->server) = *(ds->surface);
+ vd->server->data = qemu_mallocz(vd->server->linesize *
+ vd->server->height);
+
+ /* guest surface */
+ if (!vd->guest.ds)
+ vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
+ if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
+ console_color_init(ds);
+ size_changed = ds_get_width(ds) != vd->guest.ds->width ||
+ ds_get_height(ds) != vd->guest.ds->height;
+ *(vd->guest.ds) = *(ds->surface);
+ memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty));
+
+ while (vs != NULL) {
+ vnc_colordepth(vs);
+ 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->dirty, 0xFF, sizeof(vs->dirty));
+ vs = vs->next;
}
}
/* slowest but generic code. */
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
{
- unsigned int r, g, b;
-
- r = (v >> vs->red_shift1) & vs->red_max;
- g = (v >> vs->green_shift1) & vs->green_max;
- b = (v >> vs->blue_shift1) & vs->blue_max;
- v = (r << vs->red_shift) |
- (g << vs->green_shift) |
- (b << vs->blue_shift);
- switch(vs->pix_bpp) {
+ 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->pix_big_endian) {
+ if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
buf[0] = v >> 8;
buf[1] = v;
} else {
break;
default:
case 4:
- if (vs->pix_big_endian) {
+ if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
buf[0] = v >> 24;
buf[1] = v >> 16;
buf[2] = v >> 8;
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
{
- uint32_t *pixels = pixels1;
uint8_t buf[4];
- int n, i;
-
- n = size >> 2;
- for(i = 0; i < n; i++) {
- vnc_convert_pixel(vs, buf, pixels[i]);
- vnc_write(vs, buf, vs->pix_bpp);
+ VncDisplay *vd = vs->vd;
+
+ if (vd->server->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 (vd->server->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 (vd->server->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;
- char *row;
-
- vnc_framebuffer_update(vs, x, y, w, h, 0);
+ uint8_t *row;
+ VncDisplay *vd = vs->vd;
- row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
+ 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, row, w * vs->depth);
- row += vs->ds->linesize;
+ vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds));
+ row += ds_get_linesize(vs->ds);
}
}
#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"
{
int i, j;
int has_fg, has_bg;
- uint32_t last_fg32, last_bg32;
-
- vnc_framebuffer_update(vs, x, y, w, h, 5);
+ uint8_t *last_fg, *last_bg;
+ VncDisplay *vd = vs->vd;
+ last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);
+ last_bg = (uint8_t *) qemu_malloc(vd->server->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,
+ 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_bg32, &last_fg32, &has_bg, &has_fg);
- }
+ last_bg, last_fg, &has_bg, &has_fg);
+ }
}
+ free(last_fg);
+ free(last_bg);
+
}
-static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
+static void vnc_zlib_init(VncState *vs)
{
- if (vs->has_hextile)
- send_framebuffer_update_hextile(vs, x, y, w, h);
- else
- send_framebuffer_update_raw(vs, x, y, w, h);
+ int i;
+ for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++)
+ vs->zlib_stream[i].opaque = NULL;
}
-static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
+static void vnc_zlib_start(VncState *vs)
{
- int src, dst;
- char *src_row;
- char *dst_row;
- char *old_row;
- int y = 0;
- int pitch = ds->linesize;
- VncState *vs = ds->opaque;
+ buffer_reset(&vs->zlib);
- vnc_update_client(vs);
+ // make the output buffer be the zlib buffer, so we can compress it later
+ vs->zlib_tmp = vs->output;
+ vs->output = vs->zlib;
+}
- if (dst_y > src_y) {
- y = h - 1;
- pitch = -pitch;
+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;
}
- src = (ds->linesize * (src_y + y) + vs->depth * src_x);
- dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
+ 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;
- src_row = ds->data + src;
- dst_row = ds->data + dst;
- old_row = vs->old_data + dst;
+ // 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;
+}
- for (y = 0; y < h; y++) {
- memmove(old_row, src_row, w * vs->depth);
- memmove(dst_row, src_row, w * vs->depth);
- src_row += pitch;
- dst_row += pitch;
- old_row += pitch;
+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)
+{
+ /* send bitblit op to the vnc client */
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, 1);
+ 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 int find_dirty_height(VncState *vs, int y, int last_x, int x)
+static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
{
- 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);
+ 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, 1);
+ /* vs might be free()ed here */
+ }
+ }
- for (h = 1; h < (vs->height - y); h++) {
- int tmp_x;
- if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
- break;
- for (tmp_x = last_x; tmp_x < x; tmp_x++)
- vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
+ /* 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);
+ vs = vd->clients;
+ while (vs != NULL) {
+ if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
+ vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
+ vs = vs->next;
+ }
+ }
+ src_row += pitch - w * depth;
+ dst_row += pitch - w * depth;
+ y += inc;
}
- return h;
+ 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);
+ }
}
-static void vnc_update_client(void *opaque)
+static int find_and_clear_dirty_height(struct VncState *vs,
+ int y, int last_x, int x)
{
- VncState *vs = opaque;
+ int h;
+ VncDisplay *vd = vs->vd;
- if (vs->need_update && vs->csock != -1) {
- int y;
- char *row;
- char *old_row;
- uint32_t width_mask[VNC_DIRTY_WORDS];
- int n_rectangles;
- int saved_offset;
- int has_dirty = 0;
-
- vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
-
- /* Walk through the dirty map and eliminate tiles that
- really aren't dirty */
- row = vs->ds->data;
- old_row = vs->old_data;
-
- for (y = 0; y < vs->height; y++) {
- if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
- int x;
- char *ptr, *old_ptr;
-
- ptr = row;
- old_ptr = old_row;
-
- for (x = 0; x < vs->ds->width; x += 16) {
- if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
- vnc_clear_bit(vs->dirty_row[y], (x / 16));
- } else {
- has_dirty = 1;
- memcpy(old_ptr, ptr, 16 * vs->depth);
- }
-
- ptr += 16 * vs->depth;
- old_ptr += 16 * vs->depth;
- }
- }
-
- row += vs->ds->linesize;
- old_row += vs->ds->linesize;
- }
-
- if (!has_dirty) {
- qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
- return;
- }
-
- /* Count rectangles */
- 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->height; y++) {
- int x;
- int last_x = -1;
- for (x = 0; x < vs->width / 16; x++) {
- if (vnc_get_bit(vs->dirty_row[y], x)) {
- if (last_x == -1) {
- last_x = x;
- }
- vnc_clear_bit(vs->dirty_row[y], x);
- } else {
- if (last_x != -1) {
- int h = find_dirty_height(vs, 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_dirty_height(vs, 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);
-
- }
- qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
-}
-
-static void vnc_timer_init(VncState *vs)
-{
- if (vs->timer == NULL) {
- vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
- qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
- }
-}
-
-static void vnc_dpy_refresh(DisplayState *ds)
-{
- VncState *vs = ds->opaque;
- vnc_timer_init(vs);
- vga_hw_update();
+ for (h = 1; h < (vd->server->height - y); h++) {
+ int tmp_x;
+ if (!vnc_get_bit(vs->dirty[y + h], last_x))
+ break;
+ for (tmp_x = last_x; tmp_x < x; tmp_x++)
+ vnc_clear_bit(vs->dirty[y + h], tmp_x);
+ }
+
+ return h;
}
-static int vnc_listen_poll(void *opaque)
+static int vnc_update_client(VncState *vs, int has_dirty)
{
- VncState *vs = opaque;
+ if (vs->need_update && vs->csock != -1) {
+ VncDisplay *vd = vs->vd;
+ int y;
+ int n_rectangles;
+ int saved_offset;
+
+ 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.
+ */
+ 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 < vd->server->height; y++) {
+ int x;
+ int last_x = -1;
+ for (x = 0; x < vd->server->width / 16; x++) {
+ if (vnc_get_bit(vs->dirty[y], x)) {
+ if (last_x == -1) {
+ last_x = x;
+ }
+ vnc_clear_bit(vs->dirty[y], x);
+ } else {
+ if (last_x != -1) {
+ int h = find_and_clear_dirty_height(vs, 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, 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;
+ return n_rectangles;
+ }
+
if (vs->csock == -1)
- return 1;
+ vnc_disconnect_finish(vs);
+
return 0;
}
-static void buffer_reserve(Buffer *buffer, size_t len)
+/* audio */
+static void audio_capture_notify(void *opaque, audcnotification_e cmd)
{
- if ((buffer->capacity - buffer->offset) < len) {
- buffer->capacity += (len + 1024);
- buffer->buffer = realloc(buffer->buffer, buffer->capacity);
- if (buffer->buffer == NULL) {
- fprintf(stderr, "vnc: out of memory\n");
- exit(1);
- }
+ 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 int buffer_empty(Buffer *buffer)
+static void audio_capture_destroy(void *opaque)
{
- return buffer->offset == 0;
}
-static char *buffer_end(Buffer *buffer)
+static void audio_capture(void *opaque, void *buf, int size)
{
- return buffer->buffer + buffer->offset;
+ 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 buffer_reset(Buffer *buffer)
+static void audio_add(VncState *vs)
{
- buffer->offset = 0;
+ 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 buffer_append(Buffer *buffer, const void *data, size_t len)
+static void audio_del(VncState *vs)
{
- memcpy(buffer->buffer + buffer->offset, data, len);
- buffer->offset += len;
+ if (vs->audio_cap) {
+ AUD_del_capture(vs->audio_cap, vs);
+ vs->audio_cap = NULL;
+ }
}
-static int vnc_client_io_error(VncState *vs, int ret, int last_errno)
+static void vnc_disconnect_start(VncState *vs)
{
- if (ret == 0 || ret == -1) {
- if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN))
- return 0;
-
- VNC_DEBUG("Closing down client sock %d %d\n", ret, ret < 0 ? last_errno : 0);
- qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
- closesocket(vs->csock);
- vs->csock = -1;
- buffer_reset(&vs->input);
- buffer_reset(&vs->output);
- vs->need_update = 0;
-#if CONFIG_VNC_TLS
- if (vs->tls_session) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- }
- vs->wiremode = VNC_WIREMODE_CLEAR;
+ 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)
+{
+ 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 */
- return 0;
+#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);
+ vnc_remove_timer(vs->vd);
+}
+
+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;
}
-static void vnc_client_error(VncState *vs)
+
+void vnc_client_error(VncState *vs)
{
- vnc_client_io_error(vs, -1, EINVAL);
+ VNC_DEBUG("Closing down client sock: protocol error\n");
+ vnc_disconnect_start(vs);
}
-static void vnc_client_write(void *opaque)
+
+/*
+ * 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;
- VncState *vs = opaque;
-
-#if CONFIG_VNC_TLS
- if (vs->tls_session) {
- ret = gnutls_write(vs->tls_session, vs->output.buffer, vs->output.offset);
- if (ret < 0) {
- if (ret == GNUTLS_E_AGAIN)
- errno = EAGAIN;
- else
- errno = EIO;
- ret = -1;
- }
+#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, vs->output.buffer, vs->output.offset, 0);
- ret = vnc_client_io_error(vs, ret, socket_error());
+ 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;
+ 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);
+ 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)
+ */
+void vnc_client_write(void *opaque)
+{
+ long ret;
+ VncState *vs = opaque;
+
+#ifdef CONFIG_VNC_SASL
+ if (vs->sasl.conn &&
+ vs->sasl.runSSF &&
+ !vs->sasl.waitWriteSSF)
+ ret = vnc_client_write_sasl(vs);
+ else
+#endif /* CONFIG_VNC_SASL */
+ ret = vnc_client_write_plain(vs);
}
-static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
+void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
{
vs->read_handler = func;
vs->read_handler_expect = expecting;
}
-static void vnc_client_read(void *opaque)
+
+/*
+ * 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)
{
- VncState *vs = opaque;
long ret;
-
- buffer_reserve(&vs->input, 4096);
-
-#if CONFIG_VNC_TLS
- if (vs->tls_session) {
- ret = gnutls_read(vs->tls_session, buffer_end(&vs->input), 4096);
- if (ret < 0) {
- if (ret == GNUTLS_E_AGAIN)
- errno = EAGAIN;
- else
- errno = EIO;
- ret = -1;
- }
+#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 = recv(vs->csock, buffer_end(&vs->input), 4096, 0);
- ret = vnc_client_io_error(vs, ret, socket_error());
- if (!ret)
- return;
+ ret = recv(vs->csock, (void *)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;
+}
+
+
+/*
+ * 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;
+ size_t len = vs->read_handler_expect;
+ int ret;
- ret = vs->read_handler(vs, vs->input.buffer, len);
- if (vs->csock == -1)
- return;
+ 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;
- }
+ if (!ret) {
+ memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
+ vs->input.offset -= len;
+ } else {
+ vs->read_handler_expect = ret;
+ }
}
}
-static void vnc_write(VncState *vs, const void *data, size_t len)
+void vnc_write(VncState *vs, const void *data, size_t len)
{
buffer_reserve(&vs->output, len);
- if (buffer_empty(&vs->output)) {
- qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
+ 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);
}
-static void vnc_write_s32(VncState *vs, int32_t value)
+void vnc_write_s32(VncState *vs, int32_t value)
{
vnc_write_u32(vs, *(uint32_t *)&value);
}
-static void vnc_write_u32(VncState *vs, uint32_t value)
+void vnc_write_u32(VncState *vs, uint32_t value)
{
uint8_t buf[4];
vnc_write(vs, buf, 4);
}
-static void vnc_write_u16(VncState *vs, uint16_t value)
+void vnc_write_u16(VncState *vs, uint16_t value)
{
uint8_t buf[2];
vnc_write(vs, buf, 2);
}
-static void vnc_write_u8(VncState *vs, uint8_t value)
+void vnc_write_u8(VncState *vs, uint8_t value)
{
vnc_write(vs, (char *)&value, 1);
}
-static void vnc_flush(VncState *vs)
+void vnc_flush(VncState *vs)
{
- if (vs->output.offset)
- vnc_client_write(vs);
+ if (vs->csock != -1 && vs->output.offset)
+ vnc_client_write(vs);
}
-static uint8_t read_u8(uint8_t *data, size_t offset)
+uint8_t read_u8(uint8_t *data, size_t offset)
{
return data[offset];
}
-static uint16_t read_u16(uint8_t *data, size_t offset)
+uint16_t read_u16(uint8_t *data, size_t offset)
{
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
}
-static int32_t read_s32(uint8_t *data, size_t offset)
+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]);
+ (data[offset + 2] << 8) | data[offset + 3]);
}
-static uint32_t read_u32(uint8_t *data, size_t offset)
+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]);
+ (data[offset + 2] << 8) | data[offset + 3]);
}
-#if CONFIG_VNC_TLS
-ssize_t vnc_tls_push(gnutls_transport_ptr_t transport,
- const void *data,
- size_t len) {
- struct VncState *vs = (struct VncState *)transport;
- int ret;
+static void client_cut_text(VncState *vs, size_t len, uint8_t *text)
+{
+}
- retry:
- ret = send(vs->csock, data, len, 0);
- if (ret < 0) {
- if (errno == EINTR)
- goto retry;
- return -1;
+static void check_pointer_type_change(VncState *vs, int absolute)
+{
+ if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
+ vnc_write_u8(vs, 0);
+ 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_flush(vs);
}
- return ret;
-}
-
-
-ssize_t vnc_tls_pull(gnutls_transport_ptr_t transport,
- void *data,
- size_t len) {
- struct VncState *vs = (struct VncState *)transport;
- int ret;
-
- retry:
- ret = recv(vs->csock, data, len, 0);
- if (ret < 0) {
- if (errno == EINTR)
- goto retry;
- return -1;
- }
- return ret;
-}
-#endif /* CONFIG_VNC_TLS */
-
-static void client_cut_text(VncState *vs, size_t len, char *text)
-{
-}
-
-static void check_pointer_type_change(VncState *vs, int absolute)
-{
- if (vs->has_pointer_type_change && vs->absolute != absolute) {
- vnc_write_u8(vs, 0);
- vnc_write_u8(vs, 0);
- vnc_write_u16(vs, 1);
- vnc_framebuffer_update(vs, absolute, 0,
- vs->ds->width, vs->ds->height, -257);
- vnc_flush(vs);
- }
- vs->absolute = absolute;
+ vs->absolute = absolute;
}
static void pointer_event(VncState *vs, int button_mask, int x, int y)
int dz = 0;
if (button_mask & 0x01)
- buttons |= MOUSE_EVENT_LBUTTON;
+ buttons |= MOUSE_EVENT_LBUTTON;
if (button_mask & 0x02)
- buttons |= MOUSE_EVENT_MBUTTON;
+ buttons |= MOUSE_EVENT_MBUTTON;
if (button_mask & 0x04)
- buttons |= MOUSE_EVENT_RBUTTON;
+ buttons |= MOUSE_EVENT_RBUTTON;
if (button_mask & 0x08)
- dz = -1;
+ dz = -1;
if (button_mask & 0x10)
- dz = 1;
+ dz = 1;
if (vs->absolute) {
- kbd_mouse_event(x * 0x7FFF / vs->ds->width,
- y * 0x7FFF / vs->ds->height,
- dz, buttons);
- } else if (vs->has_pointer_type_change) {
- x -= 0x7FFF;
- y -= 0x7FFF;
-
- kbd_mouse_event(x, y, dz, buttons);
+ kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1),
+ y * 0x7FFF / (ds_get_height(vs->ds) - 1),
+ 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;
+ 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;
}
check_pointer_type_change(vs, kbd_mouse_is_absolute());
}
}
-static void do_key_event(VncState *vs, int down, uint32_t sym)
+static void press_key(VncState *vs, int keysym)
{
- int keycode;
+ kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) & 0x7f);
+ kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) | 0x80);
+}
- keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
-
+static void do_key_event(VncState *vs, int down, int keycode, int sym)
+{
/* QEMU console switch */
switch(keycode) {
case 0x2a: /* Left Shift */
else
vs->modifiers_state[keycode] = 0;
break;
- case 0x02 ... 0x0a: /* '1' to '9' keys */
+ 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);
return;
}
break;
+ case 0x3a: /* CapsLock */
+ case 0x45: /* NumLock */
+ if (!down)
+ vs->modifiers_state[keycode] ^= 1;
+ break;
+ }
+
+ if (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 (is_graphic_console()) {
} else {
/* QEMU console emulation */
if (down) {
+ int numlock = vs->modifiers_state[0x45];
switch (keycode) {
case 0x2a: /* Left Shift */
case 0x36: /* Right Shift */
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:
kbd_put_keysym(sym);
break;
static void key_event(VncState *vs, int down, uint32_t sym)
{
- if (sym >= 'A' && sym <= 'Z')
- sym = sym - 'A' + 'a';
- do_key_event(vs, down, sym);
+ int keycode;
+
+ if (sym >= 'A' && sym <= 'Z' && is_graphic_console())
+ sym = sym - 'A' + 'a';
+
+ keycode = keysym2scancode(vs->vd->kbd_layout, sym & 0xFFFF);
+ 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)
-{
- if (x_position > vs->ds->width)
- x_position = vs->ds->width;
- if (y_position > vs->ds->height)
- y_position = vs->ds->height;
- if (x_position + w >= vs->ds->width)
- w = vs->ds->width - x_position;
- if (y_position + h >= vs->ds->height)
- h = vs->ds->height - y_position;
+ int x_position, int y_position,
+ int w, int h)
+{
+ if (x_position > ds_get_width(vs->ds))
+ x_position = ds_get_width(vs->ds);
+ if (y_position > ds_get_height(vs->ds))
+ y_position = ds_get_height(vs->ds);
+ if (x_position + w >= ds_get_width(vs->ds))
+ w = ds_get_width(vs->ds) - x_position;
+ if (y_position + h >= ds_get_height(vs->ds))
+ h = ds_get_height(vs->ds) - y_position;
int i;
vs->need_update = 1;
if (!incremental) {
- char *old_row = vs->old_data + y_position * vs->ds->linesize;
-
- for (i = 0; i < h; i++) {
- vnc_set_bits(vs->dirty_row[y_position + i],
- (vs->ds->width / 16), VNC_DIRTY_WORDS);
- memset(old_row, 42, vs->ds->width * vs->depth);
- old_row += vs->ds->linesize;
- }
+ vs->force_update = 1;
+ for (i = 0; i < h; i++) {
+ vnc_set_bits(vs->dirty[y_position + i],
+ (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
+ }
}
}
+static void send_ext_key_event_ack(VncState *vs)
+{
+ vnc_write_u8(vs, 0);
+ 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_flush(vs);
+}
+
+static void send_ext_audio_ack(VncState *vs)
+{
+ vnc_write_u8(vs, 0);
+ 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_flush(vs);
+}
+
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
{
int i;
+ unsigned int enc = 0;
- vs->has_hextile = 0;
- vs->has_resize = 0;
- vs->has_pointer_type_change = 0;
+ vnc_zlib_init(vs);
+ vs->features = 0;
+ vs->vnc_encoding = 0;
+ vs->tight_compression = 9;
+ vs->tight_quality = 9;
vs->absolute = -1;
- vs->ds->dpy_copy = NULL;
for (i = n_encodings - 1; i >= 0; i--) {
- switch (encodings[i]) {
- case 0: /* Raw */
- vs->has_hextile = 0;
- break;
- case 1: /* CopyRect */
- vs->ds->dpy_copy = vnc_copy;
- break;
- case 5: /* Hextile */
- vs->has_hextile = 1;
- break;
- case -223: /* DesktopResize */
- vs->has_resize = 1;
- break;
- case -257:
- vs->has_pointer_type_change = 1;
- break;
- default:
- break;
- }
+ 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_ZLIB:
+ vs->features |= VNC_FEATURE_ZLIB_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_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:
+ vs->tight_quality = (enc & 0x0F);
+ break;
+ default:
+ VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
+ break;
+ }
}
check_pointer_type_change(vs, kbd_mouse_is_absolute());
}
-static int compute_nbits(unsigned int val)
+static void set_pixel_conversion(VncState *vs)
{
- int n;
- n = 0;
- while (val != 0) {
- n++;
- val >>= 1;
+ 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;
+ switch (vs->ds->surface->pf.bits_per_pixel) {
+ case 8:
+ vs->send_hextile_tile = send_hextile_tile_8;
+ break;
+ case 16:
+ vs->send_hextile_tile = send_hextile_tile_16;
+ break;
+ case 32:
+ vs->send_hextile_tile = send_hextile_tile_32;
+ break;
+ }
+ } else {
+ vs->write_pixels = vnc_write_pixels_generic;
+ switch (vs->ds->surface->pf.bits_per_pixel) {
+ case 8:
+ vs->send_hextile_tile = send_hextile_tile_generic_8;
+ break;
+ case 16:
+ vs->send_hextile_tile = send_hextile_tile_generic_16;
+ break;
+ case 32:
+ vs->send_hextile_tile = send_hextile_tile_generic_32;
+ break;
+ }
}
- return n;
}
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)
+ 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)
{
- int host_big_endian_flag;
-
-#ifdef WORDS_BIGENDIAN
- host_big_endian_flag = 1;
-#else
- host_big_endian_flag = 0;
-#endif
if (!true_color_flag) {
- fail:
- vnc_client_error(vs);
+ vnc_client_error(vs);
return;
}
- if (bits_per_pixel == 32 &&
- host_big_endian_flag == big_endian_flag &&
- red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
- red_shift == 16 && green_shift == 8 && blue_shift == 0) {
- vs->depth = 4;
- vs->write_pixels = vnc_write_pixels_copy;
+
+ vs->clientds = *(vs->vd->guest.ds);
+ vs->clientds.pf.rmax = red_max;
+ count_bits(vs->clientds.pf.rbits, red_max);
+ vs->clientds.pf.rshift = red_shift;
+ vs->clientds.pf.rmask = red_max << red_shift;
+ vs->clientds.pf.gmax = green_max;
+ count_bits(vs->clientds.pf.gbits, green_max);
+ vs->clientds.pf.gshift = green_shift;
+ vs->clientds.pf.gmask = green_max << green_shift;
+ vs->clientds.pf.bmax = blue_max;
+ count_bits(vs->clientds.pf.bbits, 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 */
+ if (vs->ds->surface->pf.bits_per_pixel == 32)
vs->send_hextile_tile = send_hextile_tile_32;
- } else
- if (bits_per_pixel == 16 &&
- host_big_endian_flag == big_endian_flag &&
- red_max == 31 && green_max == 63 && blue_max == 31 &&
- red_shift == 11 && green_shift == 5 && blue_shift == 0) {
- vs->depth = 2;
- vs->write_pixels = vnc_write_pixels_copy;
+ else if (vs->ds->surface->pf.bits_per_pixel == 16)
vs->send_hextile_tile = send_hextile_tile_16;
- } else
- if (bits_per_pixel == 8 &&
- red_max == 7 && green_max == 7 && blue_max == 3 &&
- red_shift == 5 && green_shift == 2 && blue_shift == 0) {
- vs->depth = 1;
- vs->write_pixels = vnc_write_pixels_copy;
+ else if (vs->ds->surface->pf.bits_per_pixel == 8)
vs->send_hextile_tile = send_hextile_tile_8;
- } else
- {
- /* generic and slower case */
- if (bits_per_pixel != 8 &&
- bits_per_pixel != 16 &&
- bits_per_pixel != 32)
- goto fail;
- vs->depth = 4;
- vs->red_shift = red_shift;
- vs->red_max = red_max;
- vs->red_shift1 = 24 - compute_nbits(red_max);
- vs->green_shift = green_shift;
- vs->green_max = green_max;
- vs->green_shift1 = 16 - compute_nbits(green_max);
- vs->blue_shift = blue_shift;
- vs->blue_max = blue_max;
- vs->blue_shift1 = 8 - compute_nbits(blue_max);
- vs->pix_bpp = bits_per_pixel / 8;
- vs->pix_big_endian = big_endian_flag;
- vs->write_pixels = vnc_write_pixels_generic;
- vs->send_hextile_tile = send_hextile_tile_generic;
- }
+ vs->clientds = *(vs->ds->surface);
+ vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG;
+ vs->write_pixels = vnc_write_pixels_copy;
- vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
- memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
- memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
+ vnc_write(vs, pad, 3); /* padding */
+}
- vga_hw_invalidate();
- vga_hw_update();
+static void vnc_dpy_setdata(DisplayState *ds)
+{
+ /* We don't have to do anything */
}
-static int protocol_client_msg(VncState *vs, char *data, size_t len)
+static void vnc_colordepth(VncState *vs)
+{
+ if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
+ /* Sending a WMVi message to notify the client*/
+ 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(vs->ds),
+ ds_get_height(vs->ds), VNC_ENCODING_WMVi);
+ pixel_format_message(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(rt_clock) + vd->timer_interval))
+ qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval);
+ }
switch (data[0]) {
case 0:
- 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;
+ 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 2:
- if (len == 1)
- return 4;
-
- if (len == 4)
- return 4 + (read_u16(data, 2) * 4);
-
- 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));
- }
+ 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;
+ set_encodings(vs, (int32_t *)(data + 4), limit);
+ break;
case 3:
- if (len == 1)
- return 10;
+ 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;
+ 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 4:
- if (len == 1)
- return 8;
+ if (len == 1)
+ return 8;
- key_event(vs, read_u8(data, 1), read_u32(data, 4));
- break;
+ key_event(vs, read_u8(data, 1), read_u32(data, 4));
+ break;
case 5:
- if (len == 1)
- return 6;
+ if (len == 1)
+ return 6;
- pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
- break;
+ pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
+ break;
case 6:
- if (len == 1)
- return 8;
+ if (len == 1)
+ return 8;
- if (len == 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;
+ client_cut_text(vs, read_u32(data, 4), data + 8);
+ break;
+ case 255:
+ if (len == 1)
+ return 2;
+
+ switch (read_u8(data, 1)) {
+ case 0:
+ if (len == 2)
+ return 12;
+
+ ext_key_event(vs, read_u16(data, 2),
+ read_u32(data, 4), read_u32(data, 8));
+ break;
+ case 1:
+ if (len == 2)
+ return 4;
+
+ switch (read_u16 (data, 2)) {
+ case 0:
+ audio_add(vs);
+ break;
+ case 1:
+ audio_del(vs);
+ break;
+ case 2:
+ 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;
+ 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, char *data, size_t len)
+static int protocol_client_init(VncState *vs, uint8_t *data, size_t len)
{
- char pad[3] = { 0, 0, 0 };
char buf[1024];
int size;
- vs->width = vs->ds->width;
- vs->height = vs->ds->height;
- vnc_write_u16(vs, vs->ds->width);
- vnc_write_u16(vs, vs->ds->height);
+ vnc_write_u16(vs, ds_get_width(vs->ds));
+ vnc_write_u16(vs, ds_get_height(vs->ds));
- vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
- vnc_write_u8(vs, vs->depth * 8); /* depth */
-#ifdef 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 */
- if (vs->depth == 4) {
- vnc_write_u16(vs, 0xFF); /* red-max */
- vnc_write_u16(vs, 0xFF); /* green-max */
- vnc_write_u16(vs, 0xFF); /* blue-max */
- vnc_write_u8(vs, 16); /* red-shift */
- vnc_write_u8(vs, 8); /* green-shift */
- vnc_write_u8(vs, 0); /* blue-shift */
- vs->send_hextile_tile = send_hextile_tile_32;
- } else if (vs->depth == 2) {
- vnc_write_u16(vs, 31); /* red-max */
- vnc_write_u16(vs, 63); /* green-max */
- vnc_write_u16(vs, 31); /* blue-max */
- vnc_write_u8(vs, 11); /* red-shift */
- vnc_write_u8(vs, 5); /* green-shift */
- vnc_write_u8(vs, 0); /* blue-shift */
- vs->send_hextile_tile = send_hextile_tile_16;
- } else if (vs->depth == 1) {
- /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
- vnc_write_u16(vs, 7); /* red-max */
- vnc_write_u16(vs, 7); /* green-max */
- vnc_write_u16(vs, 3); /* blue-max */
- vnc_write_u8(vs, 5); /* red-shift */
- vnc_write_u8(vs, 2); /* green-shift */
- vnc_write_u8(vs, 0); /* blue-shift */
- vs->send_hextile_tile = send_hextile_tile_8;
- }
- vs->write_pixels = vnc_write_pixels_copy;
-
- vnc_write(vs, pad, 3); /* padding */
+ pixel_format_message(vs);
if (qemu_name)
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
return 0;
}
+void start_client_init(VncState *vs)
+{
+ vnc_read_when(vs, protocol_client_init, 1);
+}
+
static void make_challenge(VncState *vs)
{
int i;
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
}
-static int protocol_client_auth_vnc(VncState *vs, char *data, size_t len)
+static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len)
{
- char response[VNC_AUTH_CHALLENGE_SIZE];
+ unsigned char response[VNC_AUTH_CHALLENGE_SIZE];
int i, j, pwlen;
- char key[8];
-
- if (!vs->password || !vs->password[0]) {
- VNC_DEBUG("No password configured on server");
- 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;
+ unsigned char key[8];
+
+ if (!vs->vd->password || !vs->vd->password[0]) {
+ VNC_DEBUG("No password configured on server");
+ 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;
}
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
/* Calculate the expected challenge response */
- pwlen = strlen(vs->password);
+ pwlen = strlen(vs->vd->password);
for (i=0; i<sizeof(key); i++)
- key[i] = i<pwlen ? vs->password[i] : 0;
+ 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 reponse did not match\n");
- 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);
+ VNC_DEBUG("Client challenge reponse did not match\n");
+ 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);
} else {
- VNC_DEBUG("Accepting VNC challenge response\n");
- vnc_write_u32(vs, 0); /* Accept auth */
- vnc_flush(vs);
+ VNC_DEBUG("Accepting VNC challenge response\n");
+ vnc_write_u32(vs, 0); /* Accept auth */
+ vnc_flush(vs);
- vnc_read_when(vs, protocol_client_init, 1);
+ start_client_init(vs);
}
return 0;
}
-static int start_auth_vnc(VncState *vs)
+void start_auth_vnc(VncState *vs)
{
make_challenge(vs);
/* Send client a 'random' challenge */
vnc_flush(vs);
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
- return 0;
-}
-
-
-#if CONFIG_VNC_TLS
-#define DH_BITS 1024
-static gnutls_dh_params_t dh_params;
-
-static int vnc_tls_initialize(void)
-{
- static int tlsinitialized = 0;
-
- if (tlsinitialized)
- return 1;
-
- if (gnutls_global_init () < 0)
- return 0;
-
- /* XXX ought to re-generate diffie-hellmen params periodically */
- if (gnutls_dh_params_init (&dh_params) < 0)
- return 0;
- if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0)
- return 0;
-
-#if _VNC_DEBUG == 2
- gnutls_global_set_log_level(10);
- gnutls_global_set_log_function(vnc_debug_gnutls_log);
-#endif
-
- tlsinitialized = 1;
-
- return 1;
-}
-
-static gnutls_anon_server_credentials vnc_tls_initialize_anon_cred(void)
-{
- gnutls_anon_server_credentials anon_cred;
- int ret;
-
- if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) {
- VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
- return NULL;
- }
-
- gnutls_anon_set_server_dh_params(anon_cred, dh_params);
-
- return anon_cred;
-}
-
-
-static gnutls_certificate_credentials_t vnc_tls_initialize_x509_cred(VncState *vs)
-{
- gnutls_certificate_credentials_t x509_cred;
- int ret;
-
- if (!vs->x509cacert) {
- VNC_DEBUG("No CA x509 certificate specified\n");
- return NULL;
- }
- if (!vs->x509cert) {
- VNC_DEBUG("No server x509 certificate specified\n");
- return NULL;
- }
- if (!vs->x509key) {
- VNC_DEBUG("No server private key specified\n");
- return NULL;
- }
-
- if ((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0) {
- VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
- return NULL;
- }
- if ((ret = gnutls_certificate_set_x509_trust_file(x509_cred,
- vs->x509cacert,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load CA certificate %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
-
- if ((ret = gnutls_certificate_set_x509_key_file (x509_cred,
- vs->x509cert,
- vs->x509key,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load certificate & key %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
-
- if (vs->x509cacrl) {
- if ((ret = gnutls_certificate_set_x509_crl_file(x509_cred,
- vs->x509cacrl,
- GNUTLS_X509_FMT_PEM)) < 0) {
- VNC_DEBUG("Cannot load CRL %s\n", gnutls_strerror(ret));
- gnutls_certificate_free_credentials(x509_cred);
- return NULL;
- }
- }
-
- gnutls_certificate_set_dh_params (x509_cred, dh_params);
-
- return x509_cred;
-}
-
-static int vnc_validate_certificate(struct VncState *vs)
-{
- int ret;
- unsigned int status;
- const gnutls_datum_t *certs;
- unsigned int nCerts, i;
- time_t now;
-
- VNC_DEBUG("Validating client certificate\n");
- if ((ret = gnutls_certificate_verify_peers2 (vs->tls_session, &status)) < 0) {
- VNC_DEBUG("Verify failed %s\n", gnutls_strerror(ret));
- return -1;
- }
-
- if ((now = time(NULL)) == ((time_t)-1)) {
- return -1;
- }
-
- if (status != 0) {
- if (status & GNUTLS_CERT_INVALID)
- VNC_DEBUG("The certificate is not trusted.\n");
-
- if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
- VNC_DEBUG("The certificate hasn't got a known issuer.\n");
-
- if (status & GNUTLS_CERT_REVOKED)
- VNC_DEBUG("The certificate has been revoked.\n");
-
- if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
- VNC_DEBUG("The certificate uses an insecure algorithm\n");
-
- return -1;
- } else {
- VNC_DEBUG("Certificate is valid!\n");
- }
-
- /* Only support x509 for now */
- if (gnutls_certificate_type_get(vs->tls_session) != GNUTLS_CRT_X509)
- return -1;
-
- if (!(certs = gnutls_certificate_get_peers(vs->tls_session, &nCerts)))
- return -1;
-
- for (i = 0 ; i < nCerts ; i++) {
- gnutls_x509_crt_t cert;
- VNC_DEBUG ("Checking certificate chain %d\n", i);
- if (gnutls_x509_crt_init (&cert) < 0)
- return -1;
-
- if (gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER) < 0) {
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_expiration_time (cert) < now) {
- VNC_DEBUG("The certificate has expired\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_activation_time (cert) > now) {
- VNC_DEBUG("The certificate is not yet activated\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- if (gnutls_x509_crt_get_activation_time (cert) > now) {
- VNC_DEBUG("The certificate is not yet activated\n");
- gnutls_x509_crt_deinit (cert);
- return -1;
- }
-
- gnutls_x509_crt_deinit (cert);
- }
-
- return 0;
-}
-
-
-static int start_auth_vencrypt_subauth(VncState *vs)
-{
- switch (vs->subauth) {
- case VNC_AUTH_VENCRYPT_TLSNONE:
- case VNC_AUTH_VENCRYPT_X509NONE:
- VNC_DEBUG("Accept TLS auth none\n");
- vnc_write_u32(vs, 0); /* Accept auth completion */
- vnc_read_when(vs, protocol_client_init, 1);
- break;
-
- case VNC_AUTH_VENCRYPT_TLSVNC:
- case VNC_AUTH_VENCRYPT_X509VNC:
- VNC_DEBUG("Start TLS auth VNC\n");
- return start_auth_vnc(vs);
-
- default: /* Should not be possible, but just in case */
- VNC_DEBUG("Reject auth %d\n", vs->auth);
- vnc_write_u8(vs, 1);
- if (vs->minor >= 8) {
- static const char err[] = "Unsupported authentication type";
- vnc_write_u32(vs, sizeof(err));
- vnc_write(vs, err, sizeof(err));
- }
- vnc_client_error(vs);
- }
-
- return 0;
}
-static void vnc_handshake_io(void *opaque);
-static int vnc_continue_handshake(struct VncState *vs) {
- int ret;
-
- if ((ret = gnutls_handshake(vs->tls_session)) < 0) {
- if (!gnutls_error_is_fatal(ret)) {
- VNC_DEBUG("Handshake interrupted (blocking)\n");
- if (!gnutls_record_get_direction(vs->tls_session))
- qemu_set_fd_handler(vs->csock, vnc_handshake_io, NULL, vs);
- else
- qemu_set_fd_handler(vs->csock, NULL, vnc_handshake_io, vs);
- return 0;
- }
- VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret));
- vnc_client_error(vs);
- return -1;
- }
-
- if (vs->x509verify) {
- if (vnc_validate_certificate(vs) < 0) {
- VNC_DEBUG("Client verification failed\n");
- vnc_client_error(vs);
- return -1;
- } else {
- VNC_DEBUG("Client verification passed\n");
- }
- }
-
- VNC_DEBUG("Handshake done, switching to TLS data mode\n");
- vs->wiremode = VNC_WIREMODE_TLS;
- qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
-
- return start_auth_vencrypt_subauth(vs);
-}
-
-static void vnc_handshake_io(void *opaque) {
- struct VncState *vs = (struct VncState *)opaque;
-
- VNC_DEBUG("Handshake IO continue\n");
- vnc_continue_handshake(vs);
-}
-
-#define NEED_X509_AUTH(vs) \
- ((vs)->subauth == VNC_AUTH_VENCRYPT_X509NONE || \
- (vs)->subauth == VNC_AUTH_VENCRYPT_X509VNC || \
- (vs)->subauth == VNC_AUTH_VENCRYPT_X509PLAIN)
-
-
-static int vnc_start_tls(struct VncState *vs) {
- static const int cert_type_priority[] = { GNUTLS_CRT_X509, 0 };
- static const int protocol_priority[]= { GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0 };
- static const int kx_anon[] = {GNUTLS_KX_ANON_DH, 0};
- static const int kx_x509[] = {GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA, GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0};
-
- VNC_DEBUG("Do TLS setup\n");
- if (vnc_tls_initialize() < 0) {
- VNC_DEBUG("Failed to init TLS\n");
- vnc_client_error(vs);
- return -1;
- }
- if (vs->tls_session == NULL) {
- if (gnutls_init(&vs->tls_session, GNUTLS_SERVER) < 0) {
- vnc_client_error(vs);
- return -1;
- }
-
- if (gnutls_set_default_priority(vs->tls_session) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (gnutls_kx_set_priority(vs->tls_session, NEED_X509_AUTH(vs) ? kx_x509 : kx_anon) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (gnutls_certificate_type_set_priority(vs->tls_session, cert_type_priority) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (gnutls_protocol_set_priority(vs->tls_session, protocol_priority) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
-
- if (NEED_X509_AUTH(vs)) {
- gnutls_certificate_server_credentials x509_cred = vnc_tls_initialize_x509_cred(vs);
- if (!x509_cred) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
- if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_CERTIFICATE, x509_cred) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- gnutls_certificate_free_credentials(x509_cred);
- vnc_client_error(vs);
- return -1;
- }
- if (vs->x509verify) {
- VNC_DEBUG("Requesting a client certificate\n");
- gnutls_certificate_server_set_request (vs->tls_session, GNUTLS_CERT_REQUEST);
- }
-
- } else {
- gnutls_anon_server_credentials anon_cred = vnc_tls_initialize_anon_cred();
- if (!anon_cred) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- vnc_client_error(vs);
- return -1;
- }
- if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_ANON, anon_cred) < 0) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- gnutls_anon_free_server_credentials(anon_cred);
- vnc_client_error(vs);
- return -1;
- }
- }
-
- gnutls_transport_set_ptr(vs->tls_session, (gnutls_transport_ptr_t)vs);
- gnutls_transport_set_push_function(vs->tls_session, vnc_tls_push);
- gnutls_transport_set_pull_function(vs->tls_session, vnc_tls_pull);
- }
-
- VNC_DEBUG("Start TLS handshake process\n");
- return vnc_continue_handshake(vs);
-}
-
-static int protocol_client_vencrypt_auth(VncState *vs, char *data, size_t len)
-{
- int auth = read_u32(data, 0);
-
- if (auth != vs->subauth) {
- VNC_DEBUG("Rejecting auth %d\n", auth);
- vnc_write_u8(vs, 0); /* Reject auth */
- vnc_flush(vs);
- vnc_client_error(vs);
- } else {
- VNC_DEBUG("Accepting auth %d, starting handshake\n", auth);
- vnc_write_u8(vs, 1); /* Accept auth */
- vnc_flush(vs);
-
- if (vnc_start_tls(vs) < 0) {
- VNC_DEBUG("Failed to complete TLS\n");
- return 0;
- }
-
- if (vs->wiremode == VNC_WIREMODE_TLS) {
- VNC_DEBUG("Starting VeNCrypt subauth\n");
- return start_auth_vencrypt_subauth(vs);
- } else {
- VNC_DEBUG("TLS handshake blocked\n");
- return 0;
- }
- }
- return 0;
-}
-
-static int protocol_client_vencrypt_init(VncState *vs, char *data, size_t len)
-{
- if (data[0] != 0 ||
- data[1] != 2) {
- VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]);
- vnc_write_u8(vs, 1); /* Reject version */
- vnc_flush(vs);
- vnc_client_error(vs);
- } else {
- VNC_DEBUG("Sending allowed auth %d\n", vs->subauth);
- vnc_write_u8(vs, 0); /* Accept version */
- vnc_write_u8(vs, 1); /* Number of sub-auths */
- vnc_write_u32(vs, vs->subauth); /* The supported auth */
- vnc_flush(vs);
- vnc_read_when(vs, protocol_client_vencrypt_auth, 4);
- }
- return 0;
-}
-
-static int start_auth_vencrypt(VncState *vs)
-{
- /* Send VeNCrypt version 0.2 */
- vnc_write_u8(vs, 0);
- vnc_write_u8(vs, 2);
-
- vnc_read_when(vs, protocol_client_vencrypt_init, 2);
- return 0;
-}
-#endif /* CONFIG_VNC_TLS */
-
-static int protocol_client_auth(VncState *vs, char *data, size_t len)
+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\n", (int)data[0]);
+ if (data[0] != vs->vd->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_client_error(vs);
} else { /* Accept requested auth */
VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
- switch (vs->auth) {
+ switch (vs->vd->auth) {
case VNC_AUTH_NONE:
VNC_DEBUG("Accept auth none\n");
- vnc_write_u32(vs, 0); /* Accept auth completion */
- vnc_read_when(vs, protocol_client_init, 1);
+ 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");
- return start_auth_vnc(vs);
+ start_auth_vnc(vs);
+ break;
-#if CONFIG_VNC_TLS
+#ifdef CONFIG_VNC_TLS
case VNC_AUTH_VENCRYPT:
VNC_DEBUG("Accept VeNCrypt auth\n");;
- return start_auth_vencrypt(vs);
+ 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\n", vs->auth);
+ VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
vnc_write_u8(vs, 1);
if (vs->minor >= 8) {
static const char err[] = "Authentication failed";
return 0;
}
-static int protocol_version(VncState *vs, char *version, size_t len)
+static int protocol_version(VncState *vs, uint8_t *version, size_t len)
{
char local[13];
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("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 != 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 client report v3.5 which spec requires to be treated
+ (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 == 5)
- vs->minor = 3;
+ if (vs->minor == 4 || vs->minor == 5)
+ vs->minor = 3;
if (vs->minor == 3) {
- if (vs->auth == VNC_AUTH_NONE) {
+ if (vs->vd->auth == VNC_AUTH_NONE) {
VNC_DEBUG("Tell client auth none\n");
- vnc_write_u32(vs, vs->auth);
+ vnc_write_u32(vs, vs->vd->auth);
vnc_flush(vs);
- vnc_read_when(vs, protocol_client_init, 1);
- } else if (vs->auth == VNC_AUTH_VNC) {
+ start_client_init(vs);
+ } else if (vs->vd->auth == VNC_AUTH_VNC) {
VNC_DEBUG("Tell client VNC auth\n");
- vnc_write_u32(vs, vs->auth);
+ vnc_write_u32(vs, vs->vd->auth);
vnc_flush(vs);
start_auth_vnc(vs);
} else {
- VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
+ VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->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);
+ VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
+ vnc_write_u8(vs, 1); /* num auth */
+ vnc_write_u8(vs, vs->vd->auth);
+ vnc_read_when(vs, protocol_client_auth, 1);
+ vnc_flush(vs);
}
return 0;
}
-static void vnc_listen_read(void *opaque)
+static int vnc_refresh_server_surface(VncDisplay *vd)
{
- VncState *vs = opaque;
- struct sockaddr_in addr;
- socklen_t addrlen = sizeof(addr);
+ int y;
+ uint8_t *guest_row;
+ uint8_t *server_row;
+ int cmp_bytes;
+ uint32_t width_mask[VNC_DIRTY_WORDS];
+ VncState *vs = NULL;
+ int has_dirty = 0;
- vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
- if (vs->csock != -1) {
- VNC_DEBUG("New client on socket %d\n", vs->csock);
- socket_set_nonblock(vs->csock);
- qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
- vnc_write(vs, "RFB 003.008\n", 12);
- vnc_flush(vs);
- vnc_read_when(vs, protocol_version, 12);
- memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
- memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
- vs->has_resize = 0;
- vs->has_hextile = 0;
- vs->ds->dpy_copy = NULL;
+ /*
+ * 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(vd->ds) / 16), VNC_DIRTY_WORDS);
+ cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
+ guest_row = vd->guest.ds->data;
+ server_row = vd->server->data;
+ for (y = 0; y < vd->guest.ds->height; y++) {
+ if (vnc_and_bits(vd->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 < vd->guest.ds->width;
+ x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
+ if (!vnc_get_bit(vd->guest.dirty[y], (x / 16)))
+ continue;
+ vnc_clear_bit(vd->guest.dirty[y], (x / 16));
+ if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
+ continue;
+ memcpy(server_ptr, guest_ptr, cmp_bytes);
+ vs = vd->clients;
+ while (vs != NULL) {
+ vnc_set_bit(vs->dirty[y], (x / 16));
+ vs = vs->next;
+ }
+ has_dirty++;
+ }
+ }
+ guest_row += ds_get_linesize(vd->ds);
+ server_row += ds_get_linesize(vd->ds);
}
+ return has_dirty;
}
-extern int parse_host_port(struct sockaddr_in *saddr, const char *str);
+static void vnc_refresh(void *opaque)
+{
+ VncDisplay *vd = opaque;
+ VncState *vs = NULL;
+ int has_dirty = 0, rects = 0;
-void vnc_display_init(DisplayState *ds)
+ vga_hw_update();
+
+ has_dirty = vnc_refresh_server_surface(vd);
+
+ vs = vd->clients;
+ while (vs != NULL) {
+ rects += vnc_update_client(vs, has_dirty);
+ vs = vs->next;
+ }
+
+ 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(rt_clock) + vd->timer_interval);
+}
+
+static void vnc_init_timer(VncDisplay *vd)
{
- VncState *vs;
+ vd->timer_interval = VNC_REFRESH_INTERVAL_BASE;
+ if (vd->timer == NULL && vd->clients != NULL) {
+ vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd);
+ vnc_refresh(vd);
+ }
+}
- vs = qemu_mallocz(sizeof(VncState));
- if (!vs)
- exit(1);
+static void vnc_remove_timer(VncDisplay *vd)
+{
+ if (vd->timer != NULL && vd->clients == NULL) {
+ qemu_del_timer(vd->timer);
+ qemu_free_timer(vd->timer);
+ vd->timer = NULL;
+ }
+}
- ds->opaque = vs;
- vnc_state = vs;
- vs->display = NULL;
- vs->password = NULL;
+static void vnc_connect(VncDisplay *vd, int csock)
+{
+ VncState *vs = qemu_mallocz(sizeof(VncState));
+ vs->csock = csock;
- vs->lsock = -1;
- vs->csock = -1;
- vs->depth = 4;
+ 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);
+
+ vs->vd = vd;
+ vs->ds = vd->ds;
vs->last_x = -1;
vs->last_y = -1;
- vs->ds = ds;
+ vs->as.freq = 44100;
+ vs->as.nchannels = 2;
+ vs->as.fmt = AUD_FMT_S16;
+ vs->as.endianness = 0;
- if (!keyboard_layout)
- keyboard_layout = "en-us";
+ vs->next = vd->clients;
+ vd->clients = vs;
- vs->kbd_layout = init_keyboard_layout(keyboard_layout);
- if (!vs->kbd_layout)
- exit(1);
+ vga_hw_update();
- vs->ds->data = NULL;
- vs->ds->dpy_update = vnc_dpy_update;
- vs->ds->dpy_resize = vnc_dpy_resize;
- vs->ds->dpy_refresh = vnc_dpy_refresh;
+ vnc_write(vs, "RFB 003.008\n", 12);
+ vnc_flush(vs);
+ vnc_read_when(vs, protocol_version, 12);
+ reset_keys(vs);
- memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
+ vnc_init_timer(vd);
- vnc_dpy_resize(vs->ds, 640, 400);
+ /* vs might be free()ed here */
}
-#if CONFIG_VNC_TLS
-static int vnc_set_x509_credential(VncState *vs,
- const char *certdir,
- const char *filename,
- char **cred,
- int ignoreMissing)
+static void vnc_listen_read(void *opaque)
{
- struct stat sb;
+ VncDisplay *vs = opaque;
+ struct sockaddr_in addr;
+ socklen_t addrlen = sizeof(addr);
+
+ /* Catch-up */
+ vga_hw_update();
- if (*cred) {
- qemu_free(*cred);
- *cred = NULL;
+ int csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
+ if (csock != -1) {
+ vnc_connect(vs, csock);
}
+}
- if (!(*cred = qemu_malloc(strlen(certdir) + strlen(filename) + 2)))
- return -1;
+void vnc_display_init(DisplayState *ds)
+{
+ VncDisplay *vs = qemu_mallocz(sizeof(*vs));
- strcpy(*cred, certdir);
- strcat(*cred, "/");
- strcat(*cred, filename);
+ dcl = qemu_mallocz(sizeof(DisplayChangeListener));
- VNC_DEBUG("Check %s\n", *cred);
- if (stat(*cred, &sb) < 0) {
- qemu_free(*cred);
- *cred = NULL;
- if (ignoreMissing && errno == ENOENT)
- return 0;
- return -1;
- }
+ ds->opaque = vs;
+ dcl->idle = 1;
+ vnc_display = vs;
- return 0;
-}
+ vs->lsock = -1;
-static int vnc_set_x509_credential_dir(VncState *vs,
- const char *certdir)
-{
- if (vnc_set_x509_credential(vs, certdir, X509_CA_CERT_FILE, &vs->x509cacert, 0) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vs, certdir, X509_CA_CRL_FILE, &vs->x509cacrl, 1) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vs, certdir, X509_SERVER_CERT_FILE, &vs->x509cert, 0) < 0)
- goto cleanup;
- if (vnc_set_x509_credential(vs, certdir, X509_SERVER_KEY_FILE, &vs->x509key, 0) < 0)
- goto cleanup;
+ vs->ds = ds;
- return 0;
+ if (keyboard_layout)
+ vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
+ else
+ vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
- cleanup:
- qemu_free(vs->x509cacert);
- qemu_free(vs->x509cacrl);
- qemu_free(vs->x509cert);
- qemu_free(vs->x509key);
- vs->x509cacert = vs->x509cacrl = vs->x509cert = vs->x509key = NULL;
- return -1;
+ if (!vs->kbd_layout)
+ exit(1);
+
+ 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);
}
-#endif /* CONFIG_VNC_TLS */
+
void vnc_display_close(DisplayState *ds)
{
- VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
+ VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
+ if (!vs)
+ return;
if (vs->display) {
- qemu_free(vs->display);
- vs->display = NULL;
+ qemu_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;
- }
- if (vs->csock != -1) {
- qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
- closesocket(vs->csock);
- vs->csock = -1;
- buffer_reset(&vs->input);
- buffer_reset(&vs->output);
- vs->need_update = 0;
-#if CONFIG_VNC_TLS
- if (vs->tls_session) {
- gnutls_deinit(vs->tls_session);
- vs->tls_session = NULL;
- }
- vs->wiremode = VNC_WIREMODE_CLEAR;
-#endif /* CONFIG_VNC_TLS */
+ qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
+ close(vs->lsock);
+ vs->lsock = -1;
}
vs->auth = VNC_AUTH_INVALID;
-#if CONFIG_VNC_TLS
+#ifdef CONFIG_VNC_TLS
vs->subauth = VNC_AUTH_INVALID;
- vs->x509verify = 0;
+ vs->tls.x509verify = 0;
#endif
}
int vnc_display_password(DisplayState *ds, const char *password)
{
- VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
+ VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
if (vs->password) {
- qemu_free(vs->password);
- vs->password = NULL;
+ qemu_free(vs->password);
+ vs->password = NULL;
}
if (password && password[0]) {
- if (!(vs->password = qemu_strdup(password)))
- return -1;
+ if (!(vs->password = qemu_strdup(password)))
+ return -1;
}
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)
{
- struct sockaddr *addr;
- struct sockaddr_in iaddr;
-#ifndef _WIN32
- struct sockaddr_un uaddr;
-#endif
- int reuse_addr, ret;
- socklen_t addrlen;
- const char *p;
- VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
+ VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
const char *options;
int password = 0;
-#if CONFIG_VNC_TLS
+ int reverse = 0;
+ int to_port = 0;
+#ifdef CONFIG_VNC_TLS
int tls = 0, x509 = 0;
#endif
+#ifdef CONFIG_VNC_SASL
+ int sasl = 0;
+ int saslErr;
+#endif
+ int acl = 0;
+ if (!vnc_display)
+ return -1;
vnc_display_close(ds);
if (strcmp(display, "none") == 0)
- return 0;
+ return 0;
if (!(vs->display = strdup(display)))
- return -1;
+ return -1;
options = display;
while ((options = strchr(options, ','))) {
- options++;
- if (strncmp(options, "password", 8) == 0) {
- password = 1; /* Require password auth */
-#if 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->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 = qemu_malloc(len+1);
- strncpy(path, start+1, len);
- path[len] = '\0';
- VNC_DEBUG("Trying certificate path '%s'\n", path);
- if (vnc_set_x509_credential_dir(vs, path) < 0) {
- fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
- qemu_free(path);
- qemu_free(vs->display);
- vs->display = NULL;
- return -1;
- }
- qemu_free(path);
- } else {
- fprintf(stderr, "No certificate path provided\n");
- qemu_free(vs->display);
- vs->display = NULL;
- return -1;
- }
+ options++;
+ if (strncmp(options, "password", 8) == 0) {
+ password = 1; /* Require password auth */
+ } else if (strncmp(options, "reverse", 7) == 0) {
+ reverse = 1;
+ } else if (strncmp(options, "to=", 3) == 0) {
+ to_port = atoi(options+3) + 5900;
+#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 = qemu_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);
+ qemu_free(path);
+ qemu_free(vs->display);
+ vs->display = NULL;
+ return -1;
+ }
+ qemu_free(path);
+ } else {
+ fprintf(stderr, "No certificate path provided\n");
+ qemu_free(vs->display);
+ vs->display = NULL;
+ return -1;
+ }
#endif
- }
+ } else if (strncmp(options, "acl", 3) == 0) {
+ acl = 1;
+ }
}
- if (password) {
-#if 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 {
+#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
- VNC_DEBUG("Initializing VNC server with password auth\n");
- vs->auth = VNC_AUTH_VNC;
-#if CONFIG_VNC_TLS
- vs->subauth = VNC_AUTH_INVALID;
- }
+#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 {
-#if 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 {
+#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;
-#if CONFIG_VNC_TLS
- vs->subauth = VNC_AUTH_INVALID;
- }
+ VNC_DEBUG("Initializing VNC server with no auth\n");
+ vs->auth = VNC_AUTH_NONE;
+#ifdef CONFIG_VNC_TLS
+ vs->subauth = VNC_AUTH_INVALID;
+ }
#endif
}
-#ifndef _WIN32
- if (strstart(display, "unix:", &p)) {
- addr = (struct sockaddr *)&uaddr;
- addrlen = sizeof(uaddr);
- vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0);
- if (vs->lsock == -1) {
- fprintf(stderr, "Could not create socket\n");
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
+#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));
+ free(vs->display);
+ vs->display = NULL;
+ return -1;
+ }
+#endif
- uaddr.sun_family = AF_UNIX;
- memset(uaddr.sun_path, 0, 108);
- snprintf(uaddr.sun_path, 108, "%s", p);
+ if (reverse) {
+ /* connect to viewer */
+ if (strncmp(display, "unix:", 5) == 0)
+ vs->lsock = unix_connect(display+5);
+ else
+ vs->lsock = inet_connect(display, SOCK_STREAM);
+ if (-1 == vs->lsock) {
+ free(vs->display);
+ vs->display = NULL;
+ return -1;
+ } else {
+ int csock = vs->lsock;
+ vs->lsock = -1;
+ vnc_connect(vs, csock);
+ }
+ return 0;
- unlink(uaddr.sun_path);
- } else
-#endif
- {
- addr = (struct sockaddr *)&iaddr;
- addrlen = sizeof(iaddr);
-
- if (parse_host_port(&iaddr, display) < 0) {
- fprintf(stderr, "Could not parse VNC address\n");
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
-
- iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900);
-
- vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
- if (vs->lsock == -1) {
- fprintf(stderr, "Could not create socket\n");
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
-
- reuse_addr = 1;
- ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
- (const char *)&reuse_addr, sizeof(reuse_addr));
- if (ret == -1) {
- fprintf(stderr, "setsockopt() failed\n");
- close(vs->lsock);
- vs->lsock = -1;
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
- }
-
- if (bind(vs->lsock, addr, addrlen) == -1) {
- fprintf(stderr, "bind() failed\n");
- close(vs->lsock);
- vs->lsock = -1;
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
-
- if (listen(vs->lsock, 1) == -1) {
- fprintf(stderr, "listen() failed\n");
- close(vs->lsock);
- vs->lsock = -1;
- free(vs->display);
- vs->display = NULL;
- return -1;
- }
-
- return qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);
+ } else {
+ /* listen for connects */
+ char *dpy;
+ dpy = qemu_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);
+ }
+ if (-1 == vs->lsock) {
+ free(dpy);
+ return -1;
+ } else {
+ free(vs->display);
+ vs->display = dpy;
+ }
+ }
+ return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs);
}
projects / qemu.git / blobdiff