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/*
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* QEMU VNC display driver
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*
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* Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
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* Copyright (C) 2006 Fabrice Bellard
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* Copyright (C) 2009 Red Hat, Inc
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vnc.h" |
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#include "sysemu.h" |
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#include "qemu_socket.h" |
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#include "qemu-timer.h" |
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#include "acl.h" |
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|
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#define VNC_REFRESH_INTERVAL_BASE 30 |
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#define VNC_REFRESH_INTERVAL_INC 50 |
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#define VNC_REFRESH_INTERVAL_MAX 2000 |
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|
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#include "vnc_keysym.h" |
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#include "d3des.h" |
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|
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#define count_bits(c, v) { \
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for (c = 0; v; v >>= 1) \ |
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{ \
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c += v & 1; \
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} \ |
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} |
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static VncDisplay *vnc_display; /* needed for info vnc */ |
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static DisplayChangeListener *dcl;
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|
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static char *addr_to_string(const char *format, |
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struct sockaddr_storage *sa,
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socklen_t salen) {
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char *addr;
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char host[NI_MAXHOST];
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char serv[NI_MAXSERV];
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int err;
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size_t addrlen; |
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|
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if ((err = getnameinfo((struct sockaddr *)sa, salen, |
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host, sizeof(host),
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serv, sizeof(serv),
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NI_NUMERICHOST | NI_NUMERICSERV)) != 0) {
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VNC_DEBUG("Cannot resolve address %d: %s\n",
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err, gai_strerror(err)); |
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return NULL; |
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} |
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|
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/* Enough for the existing format + the 2 vars we're
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* substituting in. */
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addrlen = strlen(format) + strlen(host) + strlen(serv); |
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addr = qemu_malloc(addrlen + 1);
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snprintf(addr, addrlen, format, host, serv); |
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addr[addrlen] = '\0';
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return addr;
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} |
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char *vnc_socket_local_addr(const char *format, int fd) { |
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struct sockaddr_storage sa;
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socklen_t salen; |
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salen = sizeof(sa);
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if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) |
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return NULL; |
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return addr_to_string(format, &sa, salen);
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} |
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|
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char *vnc_socket_remote_addr(const char *format, int fd) { |
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struct sockaddr_storage sa;
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socklen_t salen; |
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salen = sizeof(sa);
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if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) |
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return NULL; |
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return addr_to_string(format, &sa, salen);
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} |
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static const char *vnc_auth_name(VncDisplay *vd) { |
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switch (vd->auth) {
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case VNC_AUTH_INVALID:
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return "invalid"; |
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case VNC_AUTH_NONE:
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return "none"; |
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case VNC_AUTH_VNC:
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return "vnc"; |
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case VNC_AUTH_RA2:
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return "ra2"; |
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case VNC_AUTH_RA2NE:
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return "ra2ne"; |
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case VNC_AUTH_TIGHT:
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return "tight"; |
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case VNC_AUTH_ULTRA:
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return "ultra"; |
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case VNC_AUTH_TLS:
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return "tls"; |
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case VNC_AUTH_VENCRYPT:
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#ifdef CONFIG_VNC_TLS
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switch (vd->subauth) {
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case VNC_AUTH_VENCRYPT_PLAIN:
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return "vencrypt+plain"; |
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case VNC_AUTH_VENCRYPT_TLSNONE:
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return "vencrypt+tls+none"; |
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case VNC_AUTH_VENCRYPT_TLSVNC:
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return "vencrypt+tls+vnc"; |
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case VNC_AUTH_VENCRYPT_TLSPLAIN:
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return "vencrypt+tls+plain"; |
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case VNC_AUTH_VENCRYPT_X509NONE:
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return "vencrypt+x509+none"; |
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case VNC_AUTH_VENCRYPT_X509VNC:
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return "vencrypt+x509+vnc"; |
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case VNC_AUTH_VENCRYPT_X509PLAIN:
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return "vencrypt+x509+plain"; |
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case VNC_AUTH_VENCRYPT_TLSSASL:
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return "vencrypt+tls+sasl"; |
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case VNC_AUTH_VENCRYPT_X509SASL:
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return "vencrypt+x509+sasl"; |
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default:
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return "vencrypt"; |
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} |
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#else
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return "vencrypt"; |
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#endif
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case VNC_AUTH_SASL:
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return "sasl"; |
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} |
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return "unknown"; |
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} |
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static void do_info_vnc_client(Monitor *mon, VncState *client) |
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{
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char *clientAddr =
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vnc_socket_remote_addr(" address: %s:%s\n",
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client->csock); |
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if (!clientAddr)
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return;
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monitor_printf(mon, "Client:\n");
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monitor_printf(mon, "%s", clientAddr);
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free(clientAddr); |
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#ifdef CONFIG_VNC_TLS
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if (client->tls.session &&
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client->tls.dname) |
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monitor_printf(mon, " x509 dname: %s\n", client->tls.dname);
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else
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monitor_printf(mon, " x509 dname: none\n");
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#endif
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#ifdef CONFIG_VNC_SASL
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if (client->sasl.conn &&
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client->sasl.username) |
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monitor_printf(mon, " username: %s\n", client->sasl.username);
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else
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monitor_printf(mon, " username: none\n");
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#endif
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} |
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void do_info_vnc(Monitor *mon)
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{
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if (vnc_display == NULL || vnc_display->display == NULL) { |
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monitor_printf(mon, "Server: disabled\n");
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} else {
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char *serverAddr = vnc_socket_local_addr(" address: %s:%s\n", |
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vnc_display->lsock); |
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if (!serverAddr)
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return;
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monitor_printf(mon, "Server:\n");
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monitor_printf(mon, "%s", serverAddr);
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free(serverAddr); |
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monitor_printf(mon, " auth: %s\n", vnc_auth_name(vnc_display));
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if (vnc_display->clients) {
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VncState *client = vnc_display->clients; |
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while (client) {
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do_info_vnc_client(mon, client); |
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client = client->next; |
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} |
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} else {
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monitor_printf(mon, "Client: none\n");
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} |
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} |
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} |
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static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
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return (vs->features & (1 << feature)); |
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} |
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|
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/* TODO
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1) Get the queue working for IO.
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2) there is some weirdness when using the -S option (the screen is grey
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and not totally invalidated
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3) resolutions > 1024
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*/
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static int vnc_update_client(VncState *vs, int has_dirty); |
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static void vnc_disconnect_start(VncState *vs); |
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static void vnc_disconnect_finish(VncState *vs); |
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static void vnc_init_timer(VncDisplay *vd); |
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static void vnc_remove_timer(VncDisplay *vd); |
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|
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static void vnc_colordepth(VncState *vs); |
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static void framebuffer_update_request(VncState *vs, int incremental, |
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int x_position, int y_position, |
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int w, int h); |
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static void vnc_refresh(void *opaque); |
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static int vnc_refresh_server_surface(VncDisplay *vd); |
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|
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static inline void vnc_set_bit(uint32_t *d, int k) |
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{
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d[k >> 5] |= 1 << (k & 0x1f); |
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} |
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|
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static inline void vnc_clear_bit(uint32_t *d, int k) |
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{
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d[k >> 5] &= ~(1 << (k & 0x1f)); |
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} |
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|
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static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) |
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{
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int j;
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j = 0;
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while (n >= 32) { |
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d[j++] = -1;
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n -= 32;
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} |
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if (n > 0) |
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d[j++] = (1 << n) - 1; |
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while (j < nb_words)
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d[j++] = 0;
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} |
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|
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static inline int vnc_get_bit(const uint32_t *d, int k) |
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{
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return (d[k >> 5] >> (k & 0x1f)) & 1; |
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} |
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|
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static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, |
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int nb_words)
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{
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int i;
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for(i = 0; i < nb_words; i++) { |
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if ((d1[i] & d2[i]) != 0) |
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return 1; |
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} |
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return 0; |
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} |
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|
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static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
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{
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int i;
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VncDisplay *vd = ds->opaque; |
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struct VncSurface *s = &vd->guest;
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h += y; |
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|
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/* round x down to ensure the loop only spans one 16-pixel block per,
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iteration. otherwise, if (x % 16) != 0, the last iteration may span
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two 16-pixel blocks but we only mark the first as dirty
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*/
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w += (x % 16);
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x -= (x % 16);
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x = MIN(x, s->ds->width); |
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y = MIN(y, s->ds->height); |
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w = MIN(x + w, s->ds->width) - x; |
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h = MIN(h, s->ds->height); |
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|
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for (; y < h; y++)
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for (i = 0; i < w; i += 16) |
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vnc_set_bit(s->dirty[y], (x + i) / 16);
|
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} |
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|
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static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
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int32_t encoding) |
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{
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vnc_write_u16(vs, x); |
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vnc_write_u16(vs, y); |
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vnc_write_u16(vs, w); |
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vnc_write_u16(vs, h); |
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|
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vnc_write_s32(vs, encoding); |
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} |
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|
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void buffer_reserve(Buffer *buffer, size_t len)
|
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{
|
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if ((buffer->capacity - buffer->offset) < len) {
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buffer->capacity += (len + 1024);
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buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity); |
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if (buffer->buffer == NULL) { |
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fprintf(stderr, "vnc: out of memory\n");
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exit(1);
|
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} |
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} |
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} |
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|
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int buffer_empty(Buffer *buffer)
|
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{
|
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return buffer->offset == 0; |
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} |
| 326 |
|
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uint8_t *buffer_end(Buffer *buffer) |
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{
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return buffer->buffer + buffer->offset;
|
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} |
| 331 |
|
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void buffer_reset(Buffer *buffer)
|
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{
|
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buffer->offset = 0;
|
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} |
| 336 |
|
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void buffer_append(Buffer *buffer, const void *data, size_t len) |
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{
|
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memcpy(buffer->buffer + buffer->offset, data, len); |
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buffer->offset += len; |
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} |
| 342 |
|
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static void vnc_dpy_resize(DisplayState *ds) |
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{
|
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int size_changed;
|
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VncDisplay *vd = ds->opaque; |
| 347 |
VncState *vs = vd->clients; |
| 348 |
|
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/* server surface */
|
| 350 |
if (!vd->server)
|
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vd->server = qemu_mallocz(sizeof(*vd->server));
|
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if (vd->server->data)
|
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qemu_free(vd->server->data); |
| 354 |
*(vd->server) = *(ds->surface); |
| 355 |
vd->server->data = qemu_mallocz(vd->server->linesize * |
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vd->server->height); |
| 357 |
|
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/* guest surface */
|
| 359 |
if (!vd->guest.ds)
|
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vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
|
| 361 |
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
| 362 |
console_color_init(ds); |
| 363 |
size_changed = ds_get_width(ds) != vd->guest.ds->width || |
| 364 |
ds_get_height(ds) != vd->guest.ds->height; |
| 365 |
*(vd->guest.ds) = *(ds->surface); |
| 366 |
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
| 367 |
|
| 368 |
while (vs != NULL) { |
| 369 |
vnc_colordepth(vs); |
| 370 |
if (size_changed) {
|
| 371 |
if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
| 372 |
vnc_write_u8(vs, 0); /* msg id */ |
| 373 |
vnc_write_u8(vs, 0);
|
| 374 |
vnc_write_u16(vs, 1); /* number of rects */ |
| 375 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds), |
| 376 |
VNC_ENCODING_DESKTOPRESIZE); |
| 377 |
vnc_flush(vs); |
| 378 |
} |
| 379 |
} |
| 380 |
memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
| 381 |
vs = vs->next; |
| 382 |
} |
| 383 |
} |
| 384 |
|
| 385 |
/* fastest code */
|
| 386 |
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size) |
| 387 |
{
|
| 388 |
vnc_write(vs, pixels, size); |
| 389 |
} |
| 390 |
|
| 391 |
/* slowest but generic code. */
|
| 392 |
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) |
| 393 |
{
|
| 394 |
uint8_t r, g, b; |
| 395 |
VncDisplay *vd = vs->vd; |
| 396 |
|
| 397 |
r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >> |
| 398 |
vd->server->pf.rbits); |
| 399 |
g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >> |
| 400 |
vd->server->pf.gbits); |
| 401 |
b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >> |
| 402 |
vd->server->pf.bbits); |
| 403 |
v = (r << vs->clientds.pf.rshift) | |
| 404 |
(g << vs->clientds.pf.gshift) | |
| 405 |
(b << vs->clientds.pf.bshift); |
| 406 |
switch(vs->clientds.pf.bytes_per_pixel) {
|
| 407 |
case 1: |
| 408 |
buf[0] = v;
|
| 409 |
break;
|
| 410 |
case 2: |
| 411 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
| 412 |
buf[0] = v >> 8; |
| 413 |
buf[1] = v;
|
| 414 |
} else {
|
| 415 |
buf[1] = v >> 8; |
| 416 |
buf[0] = v;
|
| 417 |
} |
| 418 |
break;
|
| 419 |
default:
|
| 420 |
case 4: |
| 421 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
| 422 |
buf[0] = v >> 24; |
| 423 |
buf[1] = v >> 16; |
| 424 |
buf[2] = v >> 8; |
| 425 |
buf[3] = v;
|
| 426 |
} else {
|
| 427 |
buf[3] = v >> 24; |
| 428 |
buf[2] = v >> 16; |
| 429 |
buf[1] = v >> 8; |
| 430 |
buf[0] = v;
|
| 431 |
} |
| 432 |
break;
|
| 433 |
} |
| 434 |
} |
| 435 |
|
| 436 |
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size) |
| 437 |
{
|
| 438 |
uint8_t buf[4];
|
| 439 |
VncDisplay *vd = vs->vd; |
| 440 |
|
| 441 |
if (vd->server->pf.bytes_per_pixel == 4) { |
| 442 |
uint32_t *pixels = pixels1; |
| 443 |
int n, i;
|
| 444 |
n = size >> 2;
|
| 445 |
for(i = 0; i < n; i++) { |
| 446 |
vnc_convert_pixel(vs, buf, pixels[i]); |
| 447 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| 448 |
} |
| 449 |
} else if (vd->server->pf.bytes_per_pixel == 2) { |
| 450 |
uint16_t *pixels = pixels1; |
| 451 |
int n, i;
|
| 452 |
n = size >> 1;
|
| 453 |
for(i = 0; i < n; i++) { |
| 454 |
vnc_convert_pixel(vs, buf, pixels[i]); |
| 455 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| 456 |
} |
| 457 |
} else if (vd->server->pf.bytes_per_pixel == 1) { |
| 458 |
uint8_t *pixels = pixels1; |
| 459 |
int n, i;
|
| 460 |
n = size; |
| 461 |
for(i = 0; i < n; i++) { |
| 462 |
vnc_convert_pixel(vs, buf, pixels[i]); |
| 463 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| 464 |
} |
| 465 |
} else {
|
| 466 |
fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
|
| 467 |
} |
| 468 |
} |
| 469 |
|
| 470 |
static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h) |
| 471 |
{
|
| 472 |
int i;
|
| 473 |
uint8_t *row; |
| 474 |
VncDisplay *vd = vs->vd; |
| 475 |
|
| 476 |
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
| 477 |
for (i = 0; i < h; i++) { |
| 478 |
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds)); |
| 479 |
row += ds_get_linesize(vs->ds); |
| 480 |
} |
| 481 |
} |
| 482 |
|
| 483 |
static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h) |
| 484 |
{
|
| 485 |
ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F); |
| 486 |
ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F); |
| 487 |
} |
| 488 |
|
| 489 |
#define BPP 8 |
| 490 |
#include "vnchextile.h" |
| 491 |
#undef BPP
|
| 492 |
|
| 493 |
#define BPP 16 |
| 494 |
#include "vnchextile.h" |
| 495 |
#undef BPP
|
| 496 |
|
| 497 |
#define BPP 32 |
| 498 |
#include "vnchextile.h" |
| 499 |
#undef BPP
|
| 500 |
|
| 501 |
#define GENERIC
|
| 502 |
#define BPP 8 |
| 503 |
#include "vnchextile.h" |
| 504 |
#undef BPP
|
| 505 |
#undef GENERIC
|
| 506 |
|
| 507 |
#define GENERIC
|
| 508 |
#define BPP 16 |
| 509 |
#include "vnchextile.h" |
| 510 |
#undef BPP
|
| 511 |
#undef GENERIC
|
| 512 |
|
| 513 |
#define GENERIC
|
| 514 |
#define BPP 32 |
| 515 |
#include "vnchextile.h" |
| 516 |
#undef BPP
|
| 517 |
#undef GENERIC
|
| 518 |
|
| 519 |
static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h) |
| 520 |
{
|
| 521 |
int i, j;
|
| 522 |
int has_fg, has_bg;
|
| 523 |
uint8_t *last_fg, *last_bg; |
| 524 |
VncDisplay *vd = vs->vd; |
| 525 |
|
| 526 |
last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
| 527 |
last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
| 528 |
has_fg = has_bg = 0;
|
| 529 |
for (j = y; j < (y + h); j += 16) { |
| 530 |
for (i = x; i < (x + w); i += 16) { |
| 531 |
vs->send_hextile_tile(vs, i, j, |
| 532 |
MIN(16, x + w - i), MIN(16, y + h - j), |
| 533 |
last_bg, last_fg, &has_bg, &has_fg); |
| 534 |
} |
| 535 |
} |
| 536 |
free(last_fg); |
| 537 |
free(last_bg); |
| 538 |
|
| 539 |
} |
| 540 |
|
| 541 |
#define ZALLOC_ALIGNMENT 16 |
| 542 |
|
| 543 |
static void *zalloc(void *x, unsigned items, unsigned size) |
| 544 |
{
|
| 545 |
void *p;
|
| 546 |
|
| 547 |
size *= items; |
| 548 |
size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
| 549 |
|
| 550 |
p = qemu_mallocz(size); |
| 551 |
|
| 552 |
return (p);
|
| 553 |
} |
| 554 |
|
| 555 |
static void zfree(void *x, void *addr) |
| 556 |
{
|
| 557 |
qemu_free(addr); |
| 558 |
} |
| 559 |
|
| 560 |
static void vnc_zlib_init(VncState *vs) |
| 561 |
{
|
| 562 |
int i;
|
| 563 |
for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++) |
| 564 |
vs->zlib_stream[i].opaque = NULL;
|
| 565 |
} |
| 566 |
|
| 567 |
static void vnc_zlib_start(VncState *vs) |
| 568 |
{
|
| 569 |
buffer_reset(&vs->zlib); |
| 570 |
|
| 571 |
// make the output buffer be the zlib buffer, so we can compress it later
|
| 572 |
vs->zlib_tmp = vs->output; |
| 573 |
vs->output = vs->zlib; |
| 574 |
} |
| 575 |
|
| 576 |
static int vnc_zlib_stop(VncState *vs, int stream_id) |
| 577 |
{
|
| 578 |
z_streamp zstream = &vs->zlib_stream[stream_id]; |
| 579 |
int previous_out;
|
| 580 |
|
| 581 |
// switch back to normal output/zlib buffers
|
| 582 |
vs->zlib = vs->output; |
| 583 |
vs->output = vs->zlib_tmp; |
| 584 |
|
| 585 |
// compress the zlib buffer
|
| 586 |
|
| 587 |
// initialize the stream
|
| 588 |
// XXX need one stream per session
|
| 589 |
if (zstream->opaque != vs) {
|
| 590 |
int err;
|
| 591 |
|
| 592 |
VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
|
| 593 |
VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
|
| 594 |
zstream->zalloc = zalloc; |
| 595 |
zstream->zfree = zfree; |
| 596 |
|
| 597 |
err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS, |
| 598 |
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY); |
| 599 |
|
| 600 |
if (err != Z_OK) {
|
| 601 |
fprintf(stderr, "VNC: error initializing zlib\n");
|
| 602 |
return -1; |
| 603 |
} |
| 604 |
|
| 605 |
zstream->opaque = vs; |
| 606 |
} |
| 607 |
|
| 608 |
// XXX what to do if tight_compression changed in between?
|
| 609 |
|
| 610 |
// reserve memory in output buffer
|
| 611 |
buffer_reserve(&vs->output, vs->zlib.offset + 64);
|
| 612 |
|
| 613 |
// set pointers
|
| 614 |
zstream->next_in = vs->zlib.buffer; |
| 615 |
zstream->avail_in = vs->zlib.offset; |
| 616 |
zstream->next_out = vs->output.buffer + vs->output.offset; |
| 617 |
zstream->avail_out = vs->output.capacity - vs->output.offset; |
| 618 |
zstream->data_type = Z_BINARY; |
| 619 |
previous_out = zstream->total_out; |
| 620 |
|
| 621 |
// start encoding
|
| 622 |
if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
|
| 623 |
fprintf(stderr, "VNC: error during zlib compression\n");
|
| 624 |
return -1; |
| 625 |
} |
| 626 |
|
| 627 |
vs->output.offset = vs->output.capacity - zstream->avail_out; |
| 628 |
return zstream->total_out - previous_out;
|
| 629 |
} |
| 630 |
|
| 631 |
static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h) |
| 632 |
{
|
| 633 |
int old_offset, new_offset, bytes_written;
|
| 634 |
|
| 635 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB); |
| 636 |
|
| 637 |
// remember where we put in the follow-up size
|
| 638 |
old_offset = vs->output.offset; |
| 639 |
vnc_write_s32(vs, 0);
|
| 640 |
|
| 641 |
// compress the stream
|
| 642 |
vnc_zlib_start(vs); |
| 643 |
send_framebuffer_update_raw(vs, x, y, w, h); |
| 644 |
bytes_written = vnc_zlib_stop(vs, 0);
|
| 645 |
|
| 646 |
if (bytes_written == -1) |
| 647 |
return;
|
| 648 |
|
| 649 |
// hack in the size
|
| 650 |
new_offset = vs->output.offset; |
| 651 |
vs->output.offset = old_offset; |
| 652 |
vnc_write_u32(vs, bytes_written); |
| 653 |
vs->output.offset = new_offset; |
| 654 |
} |
| 655 |
|
| 656 |
static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
| 657 |
{
|
| 658 |
switch(vs->vnc_encoding) {
|
| 659 |
case VNC_ENCODING_ZLIB:
|
| 660 |
send_framebuffer_update_zlib(vs, x, y, w, h); |
| 661 |
break;
|
| 662 |
case VNC_ENCODING_HEXTILE:
|
| 663 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
| 664 |
send_framebuffer_update_hextile(vs, x, y, w, h); |
| 665 |
break;
|
| 666 |
default:
|
| 667 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
| 668 |
send_framebuffer_update_raw(vs, x, y, w, h); |
| 669 |
break;
|
| 670 |
} |
| 671 |
} |
| 672 |
|
| 673 |
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
| 674 |
{
|
| 675 |
/* send bitblit op to the vnc client */
|
| 676 |
vnc_write_u8(vs, 0); /* msg id */ |
| 677 |
vnc_write_u8(vs, 0);
|
| 678 |
vnc_write_u16(vs, 1); /* number of rects */ |
| 679 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
| 680 |
vnc_write_u16(vs, src_x); |
| 681 |
vnc_write_u16(vs, src_y); |
| 682 |
vnc_flush(vs); |
| 683 |
} |
| 684 |
|
| 685 |
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
| 686 |
{
|
| 687 |
VncDisplay *vd = ds->opaque; |
| 688 |
VncState *vs, *vn; |
| 689 |
uint8_t *src_row; |
| 690 |
uint8_t *dst_row; |
| 691 |
int i,x,y,pitch,depth,inc,w_lim,s;
|
| 692 |
int cmp_bytes;
|
| 693 |
|
| 694 |
vnc_refresh_server_surface(vd); |
| 695 |
for (vs = vd->clients; vs != NULL; vs = vn) { |
| 696 |
vn = vs->next; |
| 697 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
| 698 |
vs->force_update = 1;
|
| 699 |
vnc_update_client(vs, 1);
|
| 700 |
/* vs might be free()ed here */
|
| 701 |
} |
| 702 |
} |
| 703 |
|
| 704 |
/* do bitblit op on the local surface too */
|
| 705 |
pitch = ds_get_linesize(vd->ds); |
| 706 |
depth = ds_get_bytes_per_pixel(vd->ds); |
| 707 |
src_row = vd->server->data + pitch * src_y + depth * src_x; |
| 708 |
dst_row = vd->server->data + pitch * dst_y + depth * dst_x; |
| 709 |
y = dst_y; |
| 710 |
inc = 1;
|
| 711 |
if (dst_y > src_y) {
|
| 712 |
/* copy backwards */
|
| 713 |
src_row += pitch * (h-1);
|
| 714 |
dst_row += pitch * (h-1);
|
| 715 |
pitch = -pitch; |
| 716 |
y = dst_y + h - 1;
|
| 717 |
inc = -1;
|
| 718 |
} |
| 719 |
w_lim = w - (16 - (dst_x % 16)); |
| 720 |
if (w_lim < 0) |
| 721 |
w_lim = w; |
| 722 |
else
|
| 723 |
w_lim = w - (w_lim % 16);
|
| 724 |
for (i = 0; i < h; i++) { |
| 725 |
for (x = 0; x <= w_lim; |
| 726 |
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
|
| 727 |
if (x == w_lim) {
|
| 728 |
if ((s = w - w_lim) == 0) |
| 729 |
break;
|
| 730 |
} else if (!x) { |
| 731 |
s = (16 - (dst_x % 16)); |
| 732 |
s = MIN(s, w_lim); |
| 733 |
} else {
|
| 734 |
s = 16;
|
| 735 |
} |
| 736 |
cmp_bytes = s * depth; |
| 737 |
if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
| 738 |
continue;
|
| 739 |
memmove(dst_row, src_row, cmp_bytes); |
| 740 |
vs = vd->clients; |
| 741 |
while (vs != NULL) { |
| 742 |
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
|
| 743 |
vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
|
| 744 |
vs = vs->next; |
| 745 |
} |
| 746 |
} |
| 747 |
src_row += pitch - w * depth; |
| 748 |
dst_row += pitch - w * depth; |
| 749 |
y += inc; |
| 750 |
} |
| 751 |
|
| 752 |
for (vs = vd->clients; vs != NULL; vs = vs->next) { |
| 753 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
|
| 754 |
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
| 755 |
} |
| 756 |
} |
| 757 |
|
| 758 |
static int find_and_clear_dirty_height(struct VncState *vs, |
| 759 |
int y, int last_x, int x) |
| 760 |
{
|
| 761 |
int h;
|
| 762 |
VncDisplay *vd = vs->vd; |
| 763 |
|
| 764 |
for (h = 1; h < (vd->server->height - y); h++) { |
| 765 |
int tmp_x;
|
| 766 |
if (!vnc_get_bit(vs->dirty[y + h], last_x))
|
| 767 |
break;
|
| 768 |
for (tmp_x = last_x; tmp_x < x; tmp_x++)
|
| 769 |
vnc_clear_bit(vs->dirty[y + h], tmp_x); |
| 770 |
} |
| 771 |
|
| 772 |
return h;
|
| 773 |
} |
| 774 |
|
| 775 |
static int vnc_update_client(VncState *vs, int has_dirty) |
| 776 |
{
|
| 777 |
if (vs->need_update && vs->csock != -1) { |
| 778 |
VncDisplay *vd = vs->vd; |
| 779 |
int y;
|
| 780 |
int n_rectangles;
|
| 781 |
int saved_offset;
|
| 782 |
|
| 783 |
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
| 784 |
/* kernel send buffers are full -> drop frames to throttle */
|
| 785 |
return 0; |
| 786 |
|
| 787 |
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
| 788 |
return 0; |
| 789 |
|
| 790 |
/*
|
| 791 |
* Send screen updates to the vnc client using the server
|
| 792 |
* surface and server dirty map. guest surface updates
|
| 793 |
* happening in parallel don't disturb us, the next pass will
|
| 794 |
* send them to the client.
|
| 795 |
*/
|
| 796 |
n_rectangles = 0;
|
| 797 |
vnc_write_u8(vs, 0); /* msg id */ |
| 798 |
vnc_write_u8(vs, 0);
|
| 799 |
saved_offset = vs->output.offset; |
| 800 |
vnc_write_u16(vs, 0);
|
| 801 |
|
| 802 |
for (y = 0; y < vd->server->height; y++) { |
| 803 |
int x;
|
| 804 |
int last_x = -1; |
| 805 |
for (x = 0; x < vd->server->width / 16; x++) { |
| 806 |
if (vnc_get_bit(vs->dirty[y], x)) {
|
| 807 |
if (last_x == -1) { |
| 808 |
last_x = x; |
| 809 |
} |
| 810 |
vnc_clear_bit(vs->dirty[y], x); |
| 811 |
} else {
|
| 812 |
if (last_x != -1) { |
| 813 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
| 814 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
| 815 |
n_rectangles++; |
| 816 |
} |
| 817 |
last_x = -1;
|
| 818 |
} |
| 819 |
} |
| 820 |
if (last_x != -1) { |
| 821 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
| 822 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
| 823 |
n_rectangles++; |
| 824 |
} |
| 825 |
} |
| 826 |
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; |
| 827 |
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; |
| 828 |
vnc_flush(vs); |
| 829 |
vs->force_update = 0;
|
| 830 |
return n_rectangles;
|
| 831 |
} |
| 832 |
|
| 833 |
if (vs->csock == -1) |
| 834 |
vnc_disconnect_finish(vs); |
| 835 |
|
| 836 |
return 0; |
| 837 |
} |
| 838 |
|
| 839 |
/* audio */
|
| 840 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
| 841 |
{
|
| 842 |
VncState *vs = opaque; |
| 843 |
|
| 844 |
switch (cmd) {
|
| 845 |
case AUD_CNOTIFY_DISABLE:
|
| 846 |
vnc_write_u8(vs, 255);
|
| 847 |
vnc_write_u8(vs, 1);
|
| 848 |
vnc_write_u16(vs, 0);
|
| 849 |
vnc_flush(vs); |
| 850 |
break;
|
| 851 |
|
| 852 |
case AUD_CNOTIFY_ENABLE:
|
| 853 |
vnc_write_u8(vs, 255);
|
| 854 |
vnc_write_u8(vs, 1);
|
| 855 |
vnc_write_u16(vs, 1);
|
| 856 |
vnc_flush(vs); |
| 857 |
break;
|
| 858 |
} |
| 859 |
} |
| 860 |
|
| 861 |
static void audio_capture_destroy(void *opaque) |
| 862 |
{
|
| 863 |
} |
| 864 |
|
| 865 |
static void audio_capture(void *opaque, void *buf, int size) |
| 866 |
{
|
| 867 |
VncState *vs = opaque; |
| 868 |
|
| 869 |
vnc_write_u8(vs, 255);
|
| 870 |
vnc_write_u8(vs, 1);
|
| 871 |
vnc_write_u16(vs, 2);
|
| 872 |
vnc_write_u32(vs, size); |
| 873 |
vnc_write(vs, buf, size); |
| 874 |
vnc_flush(vs); |
| 875 |
} |
| 876 |
|
| 877 |
static void audio_add(VncState *vs) |
| 878 |
{
|
| 879 |
Monitor *mon = cur_mon; |
| 880 |
struct audio_capture_ops ops;
|
| 881 |
|
| 882 |
if (vs->audio_cap) {
|
| 883 |
monitor_printf(mon, "audio already running\n");
|
| 884 |
return;
|
| 885 |
} |
| 886 |
|
| 887 |
ops.notify = audio_capture_notify; |
| 888 |
ops.destroy = audio_capture_destroy; |
| 889 |
ops.capture = audio_capture; |
| 890 |
|
| 891 |
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
| 892 |
if (!vs->audio_cap) {
|
| 893 |
monitor_printf(mon, "Failed to add audio capture\n");
|
| 894 |
} |
| 895 |
} |
| 896 |
|
| 897 |
static void audio_del(VncState *vs) |
| 898 |
{
|
| 899 |
if (vs->audio_cap) {
|
| 900 |
AUD_del_capture(vs->audio_cap, vs); |
| 901 |
vs->audio_cap = NULL;
|
| 902 |
} |
| 903 |
} |
| 904 |
|
| 905 |
static void vnc_disconnect_start(VncState *vs) |
| 906 |
{
|
| 907 |
if (vs->csock == -1) |
| 908 |
return;
|
| 909 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
| 910 |
closesocket(vs->csock); |
| 911 |
vs->csock = -1;
|
| 912 |
} |
| 913 |
|
| 914 |
static void vnc_disconnect_finish(VncState *vs) |
| 915 |
{
|
| 916 |
if (vs->input.buffer) {
|
| 917 |
qemu_free(vs->input.buffer); |
| 918 |
vs->input.buffer = NULL;
|
| 919 |
} |
| 920 |
if (vs->output.buffer) {
|
| 921 |
qemu_free(vs->output.buffer); |
| 922 |
vs->output.buffer = NULL;
|
| 923 |
} |
| 924 |
#ifdef CONFIG_VNC_TLS
|
| 925 |
vnc_tls_client_cleanup(vs); |
| 926 |
#endif /* CONFIG_VNC_TLS */ |
| 927 |
#ifdef CONFIG_VNC_SASL
|
| 928 |
vnc_sasl_client_cleanup(vs); |
| 929 |
#endif /* CONFIG_VNC_SASL */ |
| 930 |
audio_del(vs); |
| 931 |
|
| 932 |
VncState *p, *parent = NULL;
|
| 933 |
for (p = vs->vd->clients; p != NULL; p = p->next) { |
| 934 |
if (p == vs) {
|
| 935 |
if (parent)
|
| 936 |
parent->next = p->next; |
| 937 |
else
|
| 938 |
vs->vd->clients = p->next; |
| 939 |
break;
|
| 940 |
} |
| 941 |
parent = p; |
| 942 |
} |
| 943 |
if (!vs->vd->clients)
|
| 944 |
dcl->idle = 1;
|
| 945 |
|
| 946 |
vnc_remove_timer(vs->vd); |
| 947 |
qemu_free(vs); |
| 948 |
} |
| 949 |
|
| 950 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
| 951 |
{
|
| 952 |
if (ret == 0 || ret == -1) { |
| 953 |
if (ret == -1) { |
| 954 |
switch (last_errno) {
|
| 955 |
case EINTR:
|
| 956 |
case EAGAIN:
|
| 957 |
#ifdef _WIN32
|
| 958 |
case WSAEWOULDBLOCK:
|
| 959 |
#endif
|
| 960 |
return 0; |
| 961 |
default:
|
| 962 |
break;
|
| 963 |
} |
| 964 |
} |
| 965 |
|
| 966 |
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
| 967 |
ret, ret < 0 ? last_errno : 0); |
| 968 |
vnc_disconnect_start(vs); |
| 969 |
|
| 970 |
return 0; |
| 971 |
} |
| 972 |
return ret;
|
| 973 |
} |
| 974 |
|
| 975 |
|
| 976 |
void vnc_client_error(VncState *vs)
|
| 977 |
{
|
| 978 |
VNC_DEBUG("Closing down client sock: protocol error\n");
|
| 979 |
vnc_disconnect_start(vs); |
| 980 |
} |
| 981 |
|
| 982 |
|
| 983 |
/*
|
| 984 |
* Called to write a chunk of data to the client socket. The data may
|
| 985 |
* be the raw data, or may have already been encoded by SASL.
|
| 986 |
* The data will be written either straight onto the socket, or
|
| 987 |
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
| 988 |
*
|
| 989 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
| 990 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
| 991 |
* though, since SASL encryption will typically be a no-op if TLS
|
| 992 |
* is active
|
| 993 |
*
|
| 994 |
* Returns the number of bytes written, which may be less than
|
| 995 |
* the requested 'datalen' if the socket would block. Returns
|
| 996 |
* -1 on error, and disconnects the client socket.
|
| 997 |
*/
|
| 998 |
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
| 999 |
{
|
| 1000 |
long ret;
|
| 1001 |
#ifdef CONFIG_VNC_TLS
|
| 1002 |
if (vs->tls.session) {
|
| 1003 |
ret = gnutls_write(vs->tls.session, data, datalen); |
| 1004 |
if (ret < 0) { |
| 1005 |
if (ret == GNUTLS_E_AGAIN)
|
| 1006 |
errno = EAGAIN; |
| 1007 |
else
|
| 1008 |
errno = EIO; |
| 1009 |
ret = -1;
|
| 1010 |
} |
| 1011 |
} else
|
| 1012 |
#endif /* CONFIG_VNC_TLS */ |
| 1013 |
ret = send(vs->csock, (const void *)data, datalen, 0); |
| 1014 |
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
| 1015 |
return vnc_client_io_error(vs, ret, socket_error());
|
| 1016 |
} |
| 1017 |
|
| 1018 |
|
| 1019 |
/*
|
| 1020 |
* Called to write buffered data to the client socket, when not
|
| 1021 |
* using any SASL SSF encryption layers. Will write as much data
|
| 1022 |
* as possible without blocking. If all buffered data is written,
|
| 1023 |
* will switch the FD poll() handler back to read monitoring.
|
| 1024 |
*
|
| 1025 |
* Returns the number of bytes written, which may be less than
|
| 1026 |
* the buffered output data if the socket would block. Returns
|
| 1027 |
* -1 on error, and disconnects the client socket.
|
| 1028 |
*/
|
| 1029 |
static long vnc_client_write_plain(VncState *vs) |
| 1030 |
{
|
| 1031 |
long ret;
|
| 1032 |
|
| 1033 |
#ifdef CONFIG_VNC_SASL
|
| 1034 |
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
| 1035 |
vs->output.buffer, vs->output.capacity, vs->output.offset, |
| 1036 |
vs->sasl.waitWriteSSF); |
| 1037 |
|
| 1038 |
if (vs->sasl.conn &&
|
| 1039 |
vs->sasl.runSSF && |
| 1040 |
vs->sasl.waitWriteSSF) {
|
| 1041 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
| 1042 |
if (ret)
|
| 1043 |
vs->sasl.waitWriteSSF -= ret; |
| 1044 |
} else
|
| 1045 |
#endif /* CONFIG_VNC_SASL */ |
| 1046 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
| 1047 |
if (!ret)
|
| 1048 |
return 0; |
| 1049 |
|
| 1050 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
| 1051 |
vs->output.offset -= ret; |
| 1052 |
|
| 1053 |
if (vs->output.offset == 0) { |
| 1054 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
| 1055 |
} |
| 1056 |
|
| 1057 |
return ret;
|
| 1058 |
} |
| 1059 |
|
| 1060 |
|
| 1061 |
/*
|
| 1062 |
* First function called whenever there is data to be written to
|
| 1063 |
* the client socket. Will delegate actual work according to whether
|
| 1064 |
* SASL SSF layers are enabled (thus requiring encryption calls)
|
| 1065 |
*/
|
| 1066 |
void vnc_client_write(void *opaque) |
| 1067 |
{
|
| 1068 |
long ret;
|
| 1069 |
VncState *vs = opaque; |
| 1070 |
|
| 1071 |
#ifdef CONFIG_VNC_SASL
|
| 1072 |
if (vs->sasl.conn &&
|
| 1073 |
vs->sasl.runSSF && |
| 1074 |
!vs->sasl.waitWriteSSF) |
| 1075 |
ret = vnc_client_write_sasl(vs); |
| 1076 |
else
|
| 1077 |
#endif /* CONFIG_VNC_SASL */ |
| 1078 |
ret = vnc_client_write_plain(vs); |
| 1079 |
} |
| 1080 |
|
| 1081 |
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
| 1082 |
{
|
| 1083 |
vs->read_handler = func; |
| 1084 |
vs->read_handler_expect = expecting; |
| 1085 |
} |
| 1086 |
|
| 1087 |
|
| 1088 |
/*
|
| 1089 |
* Called to read a chunk of data from the client socket. The data may
|
| 1090 |
* be the raw data, or may need to be further decoded by SASL.
|
| 1091 |
* The data will be read either straight from to the socket, or
|
| 1092 |
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
| 1093 |
*
|
| 1094 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
| 1095 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
| 1096 |
* though, since SASL encryption will typically be a no-op if TLS
|
| 1097 |
* is active
|
| 1098 |
*
|
| 1099 |
* Returns the number of bytes read, which may be less than
|
| 1100 |
* the requested 'datalen' if the socket would block. Returns
|
| 1101 |
* -1 on error, and disconnects the client socket.
|
| 1102 |
*/
|
| 1103 |
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
| 1104 |
{
|
| 1105 |
long ret;
|
| 1106 |
#ifdef CONFIG_VNC_TLS
|
| 1107 |
if (vs->tls.session) {
|
| 1108 |
ret = gnutls_read(vs->tls.session, data, datalen); |
| 1109 |
if (ret < 0) { |
| 1110 |
if (ret == GNUTLS_E_AGAIN)
|
| 1111 |
errno = EAGAIN; |
| 1112 |
else
|
| 1113 |
errno = EIO; |
| 1114 |
ret = -1;
|
| 1115 |
} |
| 1116 |
} else
|
| 1117 |
#endif /* CONFIG_VNC_TLS */ |
| 1118 |
ret = recv(vs->csock, (void *)data, datalen, 0); |
| 1119 |
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
| 1120 |
return vnc_client_io_error(vs, ret, socket_error());
|
| 1121 |
} |
| 1122 |
|
| 1123 |
|
| 1124 |
/*
|
| 1125 |
* Called to read data from the client socket to the input buffer,
|
| 1126 |
* when not using any SASL SSF encryption layers. Will read as much
|
| 1127 |
* data as possible without blocking.
|
| 1128 |
*
|
| 1129 |
* Returns the number of bytes read. Returns -1 on error, and
|
| 1130 |
* disconnects the client socket.
|
| 1131 |
*/
|
| 1132 |
static long vnc_client_read_plain(VncState *vs) |
| 1133 |
{
|
| 1134 |
int ret;
|
| 1135 |
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
| 1136 |
vs->input.buffer, vs->input.capacity, vs->input.offset); |
| 1137 |
buffer_reserve(&vs->input, 4096);
|
| 1138 |
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
| 1139 |
if (!ret)
|
| 1140 |
return 0; |
| 1141 |
vs->input.offset += ret; |
| 1142 |
return ret;
|
| 1143 |
} |
| 1144 |
|
| 1145 |
|
| 1146 |
/*
|
| 1147 |
* First function called whenever there is more data to be read from
|
| 1148 |
* the client socket. Will delegate actual work according to whether
|
| 1149 |
* SASL SSF layers are enabled (thus requiring decryption calls)
|
| 1150 |
*/
|
| 1151 |
void vnc_client_read(void *opaque) |
| 1152 |
{
|
| 1153 |
VncState *vs = opaque; |
| 1154 |
long ret;
|
| 1155 |
|
| 1156 |
#ifdef CONFIG_VNC_SASL
|
| 1157 |
if (vs->sasl.conn && vs->sasl.runSSF)
|
| 1158 |
ret = vnc_client_read_sasl(vs); |
| 1159 |
else
|
| 1160 |
#endif /* CONFIG_VNC_SASL */ |
| 1161 |
ret = vnc_client_read_plain(vs); |
| 1162 |
if (!ret) {
|
| 1163 |
if (vs->csock == -1) |
| 1164 |
vnc_disconnect_finish(vs); |
| 1165 |
return;
|
| 1166 |
} |
| 1167 |
|
| 1168 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
| 1169 |
size_t len = vs->read_handler_expect; |
| 1170 |
int ret;
|
| 1171 |
|
| 1172 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
| 1173 |
if (vs->csock == -1) { |
| 1174 |
vnc_disconnect_finish(vs); |
| 1175 |
return;
|
| 1176 |
} |
| 1177 |
|
| 1178 |
if (!ret) {
|
| 1179 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
| 1180 |
vs->input.offset -= len; |
| 1181 |
} else {
|
| 1182 |
vs->read_handler_expect = ret; |
| 1183 |
} |
| 1184 |
} |
| 1185 |
} |
| 1186 |
|
| 1187 |
void vnc_write(VncState *vs, const void *data, size_t len) |
| 1188 |
{
|
| 1189 |
buffer_reserve(&vs->output, len); |
| 1190 |
|
| 1191 |
if (vs->csock != -1 && buffer_empty(&vs->output)) { |
| 1192 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
| 1193 |
} |
| 1194 |
|
| 1195 |
buffer_append(&vs->output, data, len); |
| 1196 |
} |
| 1197 |
|
| 1198 |
void vnc_write_s32(VncState *vs, int32_t value)
|
| 1199 |
{
|
| 1200 |
vnc_write_u32(vs, *(uint32_t *)&value); |
| 1201 |
} |
| 1202 |
|
| 1203 |
void vnc_write_u32(VncState *vs, uint32_t value)
|
| 1204 |
{
|
| 1205 |
uint8_t buf[4];
|
| 1206 |
|
| 1207 |
buf[0] = (value >> 24) & 0xFF; |
| 1208 |
buf[1] = (value >> 16) & 0xFF; |
| 1209 |
buf[2] = (value >> 8) & 0xFF; |
| 1210 |
buf[3] = value & 0xFF; |
| 1211 |
|
| 1212 |
vnc_write(vs, buf, 4);
|
| 1213 |
} |
| 1214 |
|
| 1215 |
void vnc_write_u16(VncState *vs, uint16_t value)
|
| 1216 |
{
|
| 1217 |
uint8_t buf[2];
|
| 1218 |
|
| 1219 |
buf[0] = (value >> 8) & 0xFF; |
| 1220 |
buf[1] = value & 0xFF; |
| 1221 |
|
| 1222 |
vnc_write(vs, buf, 2);
|
| 1223 |
} |
| 1224 |
|
| 1225 |
void vnc_write_u8(VncState *vs, uint8_t value)
|
| 1226 |
{
|
| 1227 |
vnc_write(vs, (char *)&value, 1); |
| 1228 |
} |
| 1229 |
|
| 1230 |
void vnc_flush(VncState *vs)
|
| 1231 |
{
|
| 1232 |
if (vs->csock != -1 && vs->output.offset) |
| 1233 |
vnc_client_write(vs); |
| 1234 |
} |
| 1235 |
|
| 1236 |
uint8_t read_u8(uint8_t *data, size_t offset) |
| 1237 |
{
|
| 1238 |
return data[offset];
|
| 1239 |
} |
| 1240 |
|
| 1241 |
uint16_t read_u16(uint8_t *data, size_t offset) |
| 1242 |
{
|
| 1243 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
| 1244 |
} |
| 1245 |
|
| 1246 |
int32_t read_s32(uint8_t *data, size_t offset) |
| 1247 |
{
|
| 1248 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
| 1249 |
(data[offset + 2] << 8) | data[offset + 3]); |
| 1250 |
} |
| 1251 |
|
| 1252 |
uint32_t read_u32(uint8_t *data, size_t offset) |
| 1253 |
{
|
| 1254 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
| 1255 |
(data[offset + 2] << 8) | data[offset + 3]); |
| 1256 |
} |
| 1257 |
|
| 1258 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
| 1259 |
{
|
| 1260 |
} |
| 1261 |
|
| 1262 |
static void check_pointer_type_change(VncState *vs, int absolute) |
| 1263 |
{
|
| 1264 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
| 1265 |
vnc_write_u8(vs, 0);
|
| 1266 |
vnc_write_u8(vs, 0);
|
| 1267 |
vnc_write_u16(vs, 1);
|
| 1268 |
vnc_framebuffer_update(vs, absolute, 0,
|
| 1269 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
| 1270 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
| 1271 |
vnc_flush(vs); |
| 1272 |
} |
| 1273 |
vs->absolute = absolute; |
| 1274 |
} |
| 1275 |
|
| 1276 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
| 1277 |
{
|
| 1278 |
int buttons = 0; |
| 1279 |
int dz = 0; |
| 1280 |
|
| 1281 |
if (button_mask & 0x01) |
| 1282 |
buttons |= MOUSE_EVENT_LBUTTON; |
| 1283 |
if (button_mask & 0x02) |
| 1284 |
buttons |= MOUSE_EVENT_MBUTTON; |
| 1285 |
if (button_mask & 0x04) |
| 1286 |
buttons |= MOUSE_EVENT_RBUTTON; |
| 1287 |
if (button_mask & 0x08) |
| 1288 |
dz = -1;
|
| 1289 |
if (button_mask & 0x10) |
| 1290 |
dz = 1;
|
| 1291 |
|
| 1292 |
if (vs->absolute) {
|
| 1293 |
kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1), |
| 1294 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1), |
| 1295 |
dz, buttons); |
| 1296 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
| 1297 |
x -= 0x7FFF;
|
| 1298 |
y -= 0x7FFF;
|
| 1299 |
|
| 1300 |
kbd_mouse_event(x, y, dz, buttons); |
| 1301 |
} else {
|
| 1302 |
if (vs->last_x != -1) |
| 1303 |
kbd_mouse_event(x - vs->last_x, |
| 1304 |
y - vs->last_y, |
| 1305 |
dz, buttons); |
| 1306 |
vs->last_x = x; |
| 1307 |
vs->last_y = y; |
| 1308 |
} |
| 1309 |
|
| 1310 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
| 1311 |
} |
| 1312 |
|
| 1313 |
static void reset_keys(VncState *vs) |
| 1314 |
{
|
| 1315 |
int i;
|
| 1316 |
for(i = 0; i < 256; i++) { |
| 1317 |
if (vs->modifiers_state[i]) {
|
| 1318 |
if (i & 0x80) |
| 1319 |
kbd_put_keycode(0xe0);
|
| 1320 |
kbd_put_keycode(i | 0x80);
|
| 1321 |
vs->modifiers_state[i] = 0;
|
| 1322 |
} |
| 1323 |
} |
| 1324 |
} |
| 1325 |
|
| 1326 |
static void press_key(VncState *vs, int keysym) |
| 1327 |
{
|
| 1328 |
kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) & 0x7f);
|
| 1329 |
kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) | 0x80);
|
| 1330 |
} |
| 1331 |
|
| 1332 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
| 1333 |
{
|
| 1334 |
/* QEMU console switch */
|
| 1335 |
switch(keycode) {
|
| 1336 |
case 0x2a: /* Left Shift */ |
| 1337 |
case 0x36: /* Right Shift */ |
| 1338 |
case 0x1d: /* Left CTRL */ |
| 1339 |
case 0x9d: /* Right CTRL */ |
| 1340 |
case 0x38: /* Left ALT */ |
| 1341 |
case 0xb8: /* Right ALT */ |
| 1342 |
if (down)
|
| 1343 |
vs->modifiers_state[keycode] = 1;
|
| 1344 |
else
|
| 1345 |
vs->modifiers_state[keycode] = 0;
|
| 1346 |
break;
|
| 1347 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
| 1348 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
| 1349 |
/* Reset the modifiers sent to the current console */
|
| 1350 |
reset_keys(vs); |
| 1351 |
console_select(keycode - 0x02);
|
| 1352 |
return;
|
| 1353 |
} |
| 1354 |
break;
|
| 1355 |
case 0x3a: /* CapsLock */ |
| 1356 |
case 0x45: /* NumLock */ |
| 1357 |
if (!down)
|
| 1358 |
vs->modifiers_state[keycode] ^= 1;
|
| 1359 |
break;
|
| 1360 |
} |
| 1361 |
|
| 1362 |
if (keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
|
| 1363 |
/* If the numlock state needs to change then simulate an additional
|
| 1364 |
keypress before sending this one. This will happen if the user
|
| 1365 |
toggles numlock away from the VNC window.
|
| 1366 |
*/
|
| 1367 |
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
| 1368 |
if (!vs->modifiers_state[0x45]) { |
| 1369 |
vs->modifiers_state[0x45] = 1; |
| 1370 |
press_key(vs, 0xff7f);
|
| 1371 |
} |
| 1372 |
} else {
|
| 1373 |
if (vs->modifiers_state[0x45]) { |
| 1374 |
vs->modifiers_state[0x45] = 0; |
| 1375 |
press_key(vs, 0xff7f);
|
| 1376 |
} |
| 1377 |
} |
| 1378 |
} |
| 1379 |
|
| 1380 |
if ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z')) { |
| 1381 |
/* If the capslock state needs to change then simulate an additional
|
| 1382 |
keypress before sending this one. This will happen if the user
|
| 1383 |
toggles capslock away from the VNC window.
|
| 1384 |
*/
|
| 1385 |
int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
| 1386 |
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
| 1387 |
int capslock = !!(vs->modifiers_state[0x3a]); |
| 1388 |
if (capslock) {
|
| 1389 |
if (uppercase == shift) {
|
| 1390 |
vs->modifiers_state[0x3a] = 0; |
| 1391 |
press_key(vs, 0xffe5);
|
| 1392 |
} |
| 1393 |
} else {
|
| 1394 |
if (uppercase != shift) {
|
| 1395 |
vs->modifiers_state[0x3a] = 1; |
| 1396 |
press_key(vs, 0xffe5);
|
| 1397 |
} |
| 1398 |
} |
| 1399 |
} |
| 1400 |
|
| 1401 |
if (is_graphic_console()) {
|
| 1402 |
if (keycode & 0x80) |
| 1403 |
kbd_put_keycode(0xe0);
|
| 1404 |
if (down)
|
| 1405 |
kbd_put_keycode(keycode & 0x7f);
|
| 1406 |
else
|
| 1407 |
kbd_put_keycode(keycode | 0x80);
|
| 1408 |
} else {
|
| 1409 |
/* QEMU console emulation */
|
| 1410 |
if (down) {
|
| 1411 |
int numlock = vs->modifiers_state[0x45]; |
| 1412 |
switch (keycode) {
|
| 1413 |
case 0x2a: /* Left Shift */ |
| 1414 |
case 0x36: /* Right Shift */ |
| 1415 |
case 0x1d: /* Left CTRL */ |
| 1416 |
case 0x9d: /* Right CTRL */ |
| 1417 |
case 0x38: /* Left ALT */ |
| 1418 |
case 0xb8: /* Right ALT */ |
| 1419 |
break;
|
| 1420 |
case 0xc8: |
| 1421 |
kbd_put_keysym(QEMU_KEY_UP); |
| 1422 |
break;
|
| 1423 |
case 0xd0: |
| 1424 |
kbd_put_keysym(QEMU_KEY_DOWN); |
| 1425 |
break;
|
| 1426 |
case 0xcb: |
| 1427 |
kbd_put_keysym(QEMU_KEY_LEFT); |
| 1428 |
break;
|
| 1429 |
case 0xcd: |
| 1430 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
| 1431 |
break;
|
| 1432 |
case 0xd3: |
| 1433 |
kbd_put_keysym(QEMU_KEY_DELETE); |
| 1434 |
break;
|
| 1435 |
case 0xc7: |
| 1436 |
kbd_put_keysym(QEMU_KEY_HOME); |
| 1437 |
break;
|
| 1438 |
case 0xcf: |
| 1439 |
kbd_put_keysym(QEMU_KEY_END); |
| 1440 |
break;
|
| 1441 |
case 0xc9: |
| 1442 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
| 1443 |
break;
|
| 1444 |
case 0xd1: |
| 1445 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
| 1446 |
break;
|
| 1447 |
|
| 1448 |
case 0x47: |
| 1449 |
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
| 1450 |
break;
|
| 1451 |
case 0x48: |
| 1452 |
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
| 1453 |
break;
|
| 1454 |
case 0x49: |
| 1455 |
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
| 1456 |
break;
|
| 1457 |
case 0x4b: |
| 1458 |
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
| 1459 |
break;
|
| 1460 |
case 0x4c: |
| 1461 |
kbd_put_keysym('5');
|
| 1462 |
break;
|
| 1463 |
case 0x4d: |
| 1464 |
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
| 1465 |
break;
|
| 1466 |
case 0x4f: |
| 1467 |
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
| 1468 |
break;
|
| 1469 |
case 0x50: |
| 1470 |
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
| 1471 |
break;
|
| 1472 |
case 0x51: |
| 1473 |
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
| 1474 |
break;
|
| 1475 |
case 0x52: |
| 1476 |
kbd_put_keysym('0');
|
| 1477 |
break;
|
| 1478 |
case 0x53: |
| 1479 |
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
| 1480 |
break;
|
| 1481 |
|
| 1482 |
case 0xb5: |
| 1483 |
kbd_put_keysym('/');
|
| 1484 |
break;
|
| 1485 |
case 0x37: |
| 1486 |
kbd_put_keysym('*');
|
| 1487 |
break;
|
| 1488 |
case 0x4a: |
| 1489 |
kbd_put_keysym('-');
|
| 1490 |
break;
|
| 1491 |
case 0x4e: |
| 1492 |
kbd_put_keysym('+');
|
| 1493 |
break;
|
| 1494 |
case 0x9c: |
| 1495 |
kbd_put_keysym('\n');
|
| 1496 |
break;
|
| 1497 |
|
| 1498 |
default:
|
| 1499 |
kbd_put_keysym(sym); |
| 1500 |
break;
|
| 1501 |
} |
| 1502 |
} |
| 1503 |
} |
| 1504 |
} |
| 1505 |
|
| 1506 |
static void key_event(VncState *vs, int down, uint32_t sym) |
| 1507 |
{
|
| 1508 |
int keycode;
|
| 1509 |
|
| 1510 |
if (sym >= 'A' && sym <= 'Z' && is_graphic_console()) |
| 1511 |
sym = sym - 'A' + 'a'; |
| 1512 |
|
| 1513 |
keycode = keysym2scancode(vs->vd->kbd_layout, sym & 0xFFFF);
|
| 1514 |
do_key_event(vs, down, keycode, sym); |
| 1515 |
} |
| 1516 |
|
| 1517 |
static void ext_key_event(VncState *vs, int down, |
| 1518 |
uint32_t sym, uint16_t keycode) |
| 1519 |
{
|
| 1520 |
/* if the user specifies a keyboard layout, always use it */
|
| 1521 |
if (keyboard_layout)
|
| 1522 |
key_event(vs, down, sym); |
| 1523 |
else
|
| 1524 |
do_key_event(vs, down, keycode, sym); |
| 1525 |
} |
| 1526 |
|
| 1527 |
static void framebuffer_update_request(VncState *vs, int incremental, |
| 1528 |
int x_position, int y_position, |
| 1529 |
int w, int h) |
| 1530 |
{
|
| 1531 |
if (x_position > ds_get_width(vs->ds))
|
| 1532 |
x_position = ds_get_width(vs->ds); |
| 1533 |
if (y_position > ds_get_height(vs->ds))
|
| 1534 |
y_position = ds_get_height(vs->ds); |
| 1535 |
if (x_position + w >= ds_get_width(vs->ds))
|
| 1536 |
w = ds_get_width(vs->ds) - x_position; |
| 1537 |
if (y_position + h >= ds_get_height(vs->ds))
|
| 1538 |
h = ds_get_height(vs->ds) - y_position; |
| 1539 |
|
| 1540 |
int i;
|
| 1541 |
vs->need_update = 1;
|
| 1542 |
if (!incremental) {
|
| 1543 |
vs->force_update = 1;
|
| 1544 |
for (i = 0; i < h; i++) { |
| 1545 |
vnc_set_bits(vs->dirty[y_position + i], |
| 1546 |
(ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
| 1547 |
} |
| 1548 |
} |
| 1549 |
} |
| 1550 |
|
| 1551 |
static void send_ext_key_event_ack(VncState *vs) |
| 1552 |
{
|
| 1553 |
vnc_write_u8(vs, 0);
|
| 1554 |
vnc_write_u8(vs, 0);
|
| 1555 |
vnc_write_u16(vs, 1);
|
| 1556 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
| 1557 |
VNC_ENCODING_EXT_KEY_EVENT); |
| 1558 |
vnc_flush(vs); |
| 1559 |
} |
| 1560 |
|
| 1561 |
static void send_ext_audio_ack(VncState *vs) |
| 1562 |
{
|
| 1563 |
vnc_write_u8(vs, 0);
|
| 1564 |
vnc_write_u8(vs, 0);
|
| 1565 |
vnc_write_u16(vs, 1);
|
| 1566 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
| 1567 |
VNC_ENCODING_AUDIO); |
| 1568 |
vnc_flush(vs); |
| 1569 |
} |
| 1570 |
|
| 1571 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
| 1572 |
{
|
| 1573 |
int i;
|
| 1574 |
unsigned int enc = 0; |
| 1575 |
|
| 1576 |
vnc_zlib_init(vs); |
| 1577 |
vs->features = 0;
|
| 1578 |
vs->vnc_encoding = 0;
|
| 1579 |
vs->tight_compression = 9;
|
| 1580 |
vs->tight_quality = 9;
|
| 1581 |
vs->absolute = -1;
|
| 1582 |
|
| 1583 |
for (i = n_encodings - 1; i >= 0; i--) { |
| 1584 |
enc = encodings[i]; |
| 1585 |
switch (enc) {
|
| 1586 |
case VNC_ENCODING_RAW:
|
| 1587 |
vs->vnc_encoding = enc; |
| 1588 |
break;
|
| 1589 |
case VNC_ENCODING_COPYRECT:
|
| 1590 |
vs->features |= VNC_FEATURE_COPYRECT_MASK; |
| 1591 |
break;
|
| 1592 |
case VNC_ENCODING_HEXTILE:
|
| 1593 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
| 1594 |
vs->vnc_encoding = enc; |
| 1595 |
break;
|
| 1596 |
case VNC_ENCODING_ZLIB:
|
| 1597 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
| 1598 |
vs->vnc_encoding = enc; |
| 1599 |
break;
|
| 1600 |
case VNC_ENCODING_DESKTOPRESIZE:
|
| 1601 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
| 1602 |
break;
|
| 1603 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
| 1604 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
| 1605 |
break;
|
| 1606 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
| 1607 |
send_ext_key_event_ack(vs); |
| 1608 |
break;
|
| 1609 |
case VNC_ENCODING_AUDIO:
|
| 1610 |
send_ext_audio_ack(vs); |
| 1611 |
break;
|
| 1612 |
case VNC_ENCODING_WMVi:
|
| 1613 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
| 1614 |
break;
|
| 1615 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
| 1616 |
vs->tight_compression = (enc & 0x0F);
|
| 1617 |
break;
|
| 1618 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
| 1619 |
vs->tight_quality = (enc & 0x0F);
|
| 1620 |
break;
|
| 1621 |
default:
|
| 1622 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
| 1623 |
break;
|
| 1624 |
} |
| 1625 |
} |
| 1626 |
|
| 1627 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
| 1628 |
} |
| 1629 |
|
| 1630 |
static void set_pixel_conversion(VncState *vs) |
| 1631 |
{
|
| 1632 |
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
| 1633 |
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
| 1634 |
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
| 1635 |
vs->write_pixels = vnc_write_pixels_copy; |
| 1636 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
| 1637 |
case 8: |
| 1638 |
vs->send_hextile_tile = send_hextile_tile_8; |
| 1639 |
break;
|
| 1640 |
case 16: |
| 1641 |
vs->send_hextile_tile = send_hextile_tile_16; |
| 1642 |
break;
|
| 1643 |
case 32: |
| 1644 |
vs->send_hextile_tile = send_hextile_tile_32; |
| 1645 |
break;
|
| 1646 |
} |
| 1647 |
} else {
|
| 1648 |
vs->write_pixels = vnc_write_pixels_generic; |
| 1649 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
| 1650 |
case 8: |
| 1651 |
vs->send_hextile_tile = send_hextile_tile_generic_8; |
| 1652 |
break;
|
| 1653 |
case 16: |
| 1654 |
vs->send_hextile_tile = send_hextile_tile_generic_16; |
| 1655 |
break;
|
| 1656 |
case 32: |
| 1657 |
vs->send_hextile_tile = send_hextile_tile_generic_32; |
| 1658 |
break;
|
| 1659 |
} |
| 1660 |
} |
| 1661 |
} |
| 1662 |
|
| 1663 |
static void set_pixel_format(VncState *vs, |
| 1664 |
int bits_per_pixel, int depth, |
| 1665 |
int big_endian_flag, int true_color_flag, |
| 1666 |
int red_max, int green_max, int blue_max, |
| 1667 |
int red_shift, int green_shift, int blue_shift) |
| 1668 |
{
|
| 1669 |
if (!true_color_flag) {
|
| 1670 |
vnc_client_error(vs); |
| 1671 |
return;
|
| 1672 |
} |
| 1673 |
|
| 1674 |
vs->clientds = *(vs->vd->guest.ds); |
| 1675 |
vs->clientds.pf.rmax = red_max; |
| 1676 |
count_bits(vs->clientds.pf.rbits, red_max); |
| 1677 |
vs->clientds.pf.rshift = red_shift; |
| 1678 |
vs->clientds.pf.rmask = red_max << red_shift; |
| 1679 |
vs->clientds.pf.gmax = green_max; |
| 1680 |
count_bits(vs->clientds.pf.gbits, green_max); |
| 1681 |
vs->clientds.pf.gshift = green_shift; |
| 1682 |
vs->clientds.pf.gmask = green_max << green_shift; |
| 1683 |
vs->clientds.pf.bmax = blue_max; |
| 1684 |
count_bits(vs->clientds.pf.bbits, blue_max); |
| 1685 |
vs->clientds.pf.bshift = blue_shift; |
| 1686 |
vs->clientds.pf.bmask = blue_max << blue_shift; |
| 1687 |
vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
| 1688 |
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
| 1689 |
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
| 1690 |
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
| 1691 |
|
| 1692 |
set_pixel_conversion(vs); |
| 1693 |
|
| 1694 |
vga_hw_invalidate(); |
| 1695 |
vga_hw_update(); |
| 1696 |
} |
| 1697 |
|
| 1698 |
static void pixel_format_message (VncState *vs) { |
| 1699 |
char pad[3] = { 0, 0, 0 }; |
| 1700 |
|
| 1701 |
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
| 1702 |
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
| 1703 |
|
| 1704 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 1705 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
| 1706 |
#else
|
| 1707 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
| 1708 |
#endif
|
| 1709 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
| 1710 |
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
| 1711 |
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
| 1712 |
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
| 1713 |
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
| 1714 |
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
| 1715 |
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
| 1716 |
if (vs->ds->surface->pf.bits_per_pixel == 32) |
| 1717 |
vs->send_hextile_tile = send_hextile_tile_32; |
| 1718 |
else if (vs->ds->surface->pf.bits_per_pixel == 16) |
| 1719 |
vs->send_hextile_tile = send_hextile_tile_16; |
| 1720 |
else if (vs->ds->surface->pf.bits_per_pixel == 8) |
| 1721 |
vs->send_hextile_tile = send_hextile_tile_8; |
| 1722 |
vs->clientds = *(vs->ds->surface); |
| 1723 |
vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG; |
| 1724 |
vs->write_pixels = vnc_write_pixels_copy; |
| 1725 |
|
| 1726 |
vnc_write(vs, pad, 3); /* padding */ |
| 1727 |
} |
| 1728 |
|
| 1729 |
static void vnc_dpy_setdata(DisplayState *ds) |
| 1730 |
{
|
| 1731 |
/* We don't have to do anything */
|
| 1732 |
} |
| 1733 |
|
| 1734 |
static void vnc_colordepth(VncState *vs) |
| 1735 |
{
|
| 1736 |
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
| 1737 |
/* Sending a WMVi message to notify the client*/
|
| 1738 |
vnc_write_u8(vs, 0); /* msg id */ |
| 1739 |
vnc_write_u8(vs, 0);
|
| 1740 |
vnc_write_u16(vs, 1); /* number of rects */ |
| 1741 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
| 1742 |
ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
| 1743 |
pixel_format_message(vs); |
| 1744 |
vnc_flush(vs); |
| 1745 |
} else {
|
| 1746 |
set_pixel_conversion(vs); |
| 1747 |
} |
| 1748 |
} |
| 1749 |
|
| 1750 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
| 1751 |
{
|
| 1752 |
int i;
|
| 1753 |
uint16_t limit; |
| 1754 |
VncDisplay *vd = vs->vd; |
| 1755 |
|
| 1756 |
if (data[0] > 3) { |
| 1757 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| 1758 |
if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
|
| 1759 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
| 1760 |
} |
| 1761 |
|
| 1762 |
switch (data[0]) { |
| 1763 |
case 0: |
| 1764 |
if (len == 1) |
| 1765 |
return 20; |
| 1766 |
|
| 1767 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
| 1768 |
read_u8(data, 6), read_u8(data, 7), |
| 1769 |
read_u16(data, 8), read_u16(data, 10), |
| 1770 |
read_u16(data, 12), read_u8(data, 14), |
| 1771 |
read_u8(data, 15), read_u8(data, 16)); |
| 1772 |
break;
|
| 1773 |
case 2: |
| 1774 |
if (len == 1) |
| 1775 |
return 4; |
| 1776 |
|
| 1777 |
if (len == 4) { |
| 1778 |
limit = read_u16(data, 2);
|
| 1779 |
if (limit > 0) |
| 1780 |
return 4 + (limit * 4); |
| 1781 |
} else
|
| 1782 |
limit = read_u16(data, 2);
|
| 1783 |
|
| 1784 |
for (i = 0; i < limit; i++) { |
| 1785 |
int32_t val = read_s32(data, 4 + (i * 4)); |
| 1786 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
| 1787 |
} |
| 1788 |
|
| 1789 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
| 1790 |
break;
|
| 1791 |
case 3: |
| 1792 |
if (len == 1) |
| 1793 |
return 10; |
| 1794 |
|
| 1795 |
framebuffer_update_request(vs, |
| 1796 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
| 1797 |
read_u16(data, 6), read_u16(data, 8)); |
| 1798 |
break;
|
| 1799 |
case 4: |
| 1800 |
if (len == 1) |
| 1801 |
return 8; |
| 1802 |
|
| 1803 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
| 1804 |
break;
|
| 1805 |
case 5: |
| 1806 |
if (len == 1) |
| 1807 |
return 6; |
| 1808 |
|
| 1809 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
| 1810 |
break;
|
| 1811 |
case 6: |
| 1812 |
if (len == 1) |
| 1813 |
return 8; |
| 1814 |
|
| 1815 |
if (len == 8) { |
| 1816 |
uint32_t dlen = read_u32(data, 4);
|
| 1817 |
if (dlen > 0) |
| 1818 |
return 8 + dlen; |
| 1819 |
} |
| 1820 |
|
| 1821 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
| 1822 |
break;
|
| 1823 |
case 255: |
| 1824 |
if (len == 1) |
| 1825 |
return 2; |
| 1826 |
|
| 1827 |
switch (read_u8(data, 1)) { |
| 1828 |
case 0: |
| 1829 |
if (len == 2) |
| 1830 |
return 12; |
| 1831 |
|
| 1832 |
ext_key_event(vs, read_u16(data, 2),
|
| 1833 |
read_u32(data, 4), read_u32(data, 8)); |
| 1834 |
break;
|
| 1835 |
case 1: |
| 1836 |
if (len == 2) |
| 1837 |
return 4; |
| 1838 |
|
| 1839 |
switch (read_u16 (data, 2)) { |
| 1840 |
case 0: |
| 1841 |
audio_add(vs); |
| 1842 |
break;
|
| 1843 |
case 1: |
| 1844 |
audio_del(vs); |
| 1845 |
break;
|
| 1846 |
case 2: |
| 1847 |
if (len == 4) |
| 1848 |
return 10; |
| 1849 |
switch (read_u8(data, 4)) { |
| 1850 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
| 1851 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
| 1852 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
| 1853 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
| 1854 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
| 1855 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
| 1856 |
default:
|
| 1857 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
| 1858 |
vnc_client_error(vs); |
| 1859 |
break;
|
| 1860 |
} |
| 1861 |
vs->as.nchannels = read_u8(data, 5);
|
| 1862 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
| 1863 |
printf("Invalid audio channel coount %d\n",
|
| 1864 |
read_u8(data, 5));
|
| 1865 |
vnc_client_error(vs); |
| 1866 |
break;
|
| 1867 |
} |
| 1868 |
vs->as.freq = read_u32(data, 6);
|
| 1869 |
break;
|
| 1870 |
default:
|
| 1871 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
| 1872 |
vnc_client_error(vs); |
| 1873 |
break;
|
| 1874 |
} |
| 1875 |
break;
|
| 1876 |
|
| 1877 |
default:
|
| 1878 |
printf("Msg: %d\n", read_u16(data, 0)); |
| 1879 |
vnc_client_error(vs); |
| 1880 |
break;
|
| 1881 |
} |
| 1882 |
break;
|
| 1883 |
default:
|
| 1884 |
printf("Msg: %d\n", data[0]); |
| 1885 |
vnc_client_error(vs); |
| 1886 |
break;
|
| 1887 |
} |
| 1888 |
|
| 1889 |
vnc_read_when(vs, protocol_client_msg, 1);
|
| 1890 |
return 0; |
| 1891 |
} |
| 1892 |
|
| 1893 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
| 1894 |
{
|
| 1895 |
char buf[1024]; |
| 1896 |
int size;
|
| 1897 |
|
| 1898 |
vnc_write_u16(vs, ds_get_width(vs->ds)); |
| 1899 |
vnc_write_u16(vs, ds_get_height(vs->ds)); |
| 1900 |
|
| 1901 |
pixel_format_message(vs); |
| 1902 |
|
| 1903 |
if (qemu_name)
|
| 1904 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
| 1905 |
else
|
| 1906 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
| 1907 |
|
| 1908 |
vnc_write_u32(vs, size); |
| 1909 |
vnc_write(vs, buf, size); |
| 1910 |
vnc_flush(vs); |
| 1911 |
|
| 1912 |
vnc_read_when(vs, protocol_client_msg, 1);
|
| 1913 |
|
| 1914 |
return 0; |
| 1915 |
} |
| 1916 |
|
| 1917 |
void start_client_init(VncState *vs)
|
| 1918 |
{
|
| 1919 |
vnc_read_when(vs, protocol_client_init, 1);
|
| 1920 |
} |
| 1921 |
|
| 1922 |
static void make_challenge(VncState *vs) |
| 1923 |
{
|
| 1924 |
int i;
|
| 1925 |
|
| 1926 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
| 1927 |
|
| 1928 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
| 1929 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
| 1930 |
} |
| 1931 |
|
| 1932 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
| 1933 |
{
|
| 1934 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
| 1935 |
int i, j, pwlen;
|
| 1936 |
unsigned char key[8]; |
| 1937 |
|
| 1938 |
if (!vs->vd->password || !vs->vd->password[0]) { |
| 1939 |
VNC_DEBUG("No password configured on server");
|
| 1940 |
vnc_write_u32(vs, 1); /* Reject auth */ |
| 1941 |
if (vs->minor >= 8) { |
| 1942 |
static const char err[] = "Authentication failed"; |
| 1943 |
vnc_write_u32(vs, sizeof(err));
|
| 1944 |
vnc_write(vs, err, sizeof(err));
|
| 1945 |
} |
| 1946 |
vnc_flush(vs); |
| 1947 |
vnc_client_error(vs); |
| 1948 |
return 0; |
| 1949 |
} |
| 1950 |
|
| 1951 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
| 1952 |
|
| 1953 |
/* Calculate the expected challenge response */
|
| 1954 |
pwlen = strlen(vs->vd->password); |
| 1955 |
for (i=0; i<sizeof(key); i++) |
| 1956 |
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
| 1957 |
deskey(key, EN0); |
| 1958 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
| 1959 |
des(response+j, response+j); |
| 1960 |
|
| 1961 |
/* Compare expected vs actual challenge response */
|
| 1962 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
| 1963 |
VNC_DEBUG("Client challenge reponse did not match\n");
|
| 1964 |
vnc_write_u32(vs, 1); /* Reject auth */ |
| 1965 |
if (vs->minor >= 8) { |
| 1966 |
static const char err[] = "Authentication failed"; |
| 1967 |
vnc_write_u32(vs, sizeof(err));
|
| 1968 |
vnc_write(vs, err, sizeof(err));
|
| 1969 |
} |
| 1970 |
vnc_flush(vs); |
| 1971 |
vnc_client_error(vs); |
| 1972 |
} else {
|
| 1973 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
| 1974 |
vnc_write_u32(vs, 0); /* Accept auth */ |
| 1975 |
vnc_flush(vs); |
| 1976 |
|
| 1977 |
start_client_init(vs); |
| 1978 |
} |
| 1979 |
return 0; |
| 1980 |
} |
| 1981 |
|
| 1982 |
void start_auth_vnc(VncState *vs)
|
| 1983 |
{
|
| 1984 |
make_challenge(vs); |
| 1985 |
/* Send client a 'random' challenge */
|
| 1986 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
| 1987 |
vnc_flush(vs); |
| 1988 |
|
| 1989 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
| 1990 |
} |
| 1991 |
|
| 1992 |
|
| 1993 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
| 1994 |
{
|
| 1995 |
/* We only advertise 1 auth scheme at a time, so client
|
| 1996 |
* must pick the one we sent. Verify this */
|
| 1997 |
if (data[0] != vs->vd->auth) { /* Reject auth */ |
| 1998 |
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
| 1999 |
vnc_write_u32(vs, 1);
|
| 2000 |
if (vs->minor >= 8) { |
| 2001 |
static const char err[] = "Authentication failed"; |
| 2002 |
vnc_write_u32(vs, sizeof(err));
|
| 2003 |
vnc_write(vs, err, sizeof(err));
|
| 2004 |
} |
| 2005 |
vnc_client_error(vs); |
| 2006 |
} else { /* Accept requested auth */ |
| 2007 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
| 2008 |
switch (vs->vd->auth) {
|
| 2009 |
case VNC_AUTH_NONE:
|
| 2010 |
VNC_DEBUG("Accept auth none\n");
|
| 2011 |
if (vs->minor >= 8) { |
| 2012 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
| 2013 |
vnc_flush(vs); |
| 2014 |
} |
| 2015 |
start_client_init(vs); |
| 2016 |
break;
|
| 2017 |
|
| 2018 |
case VNC_AUTH_VNC:
|
| 2019 |
VNC_DEBUG("Start VNC auth\n");
|
| 2020 |
start_auth_vnc(vs); |
| 2021 |
break;
|
| 2022 |
|
| 2023 |
#ifdef CONFIG_VNC_TLS
|
| 2024 |
case VNC_AUTH_VENCRYPT:
|
| 2025 |
VNC_DEBUG("Accept VeNCrypt auth\n");;
|
| 2026 |
start_auth_vencrypt(vs); |
| 2027 |
break;
|
| 2028 |
#endif /* CONFIG_VNC_TLS */ |
| 2029 |
|
| 2030 |
#ifdef CONFIG_VNC_SASL
|
| 2031 |
case VNC_AUTH_SASL:
|
| 2032 |
VNC_DEBUG("Accept SASL auth\n");
|
| 2033 |
start_auth_sasl(vs); |
| 2034 |
break;
|
| 2035 |
#endif /* CONFIG_VNC_SASL */ |
| 2036 |
|
| 2037 |
default: /* Should not be possible, but just in case */ |
| 2038 |
VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
|
| 2039 |
vnc_write_u8(vs, 1);
|
| 2040 |
if (vs->minor >= 8) { |
| 2041 |
static const char err[] = "Authentication failed"; |
| 2042 |
vnc_write_u32(vs, sizeof(err));
|
| 2043 |
vnc_write(vs, err, sizeof(err));
|
| 2044 |
} |
| 2045 |
vnc_client_error(vs); |
| 2046 |
} |
| 2047 |
} |
| 2048 |
return 0; |
| 2049 |
} |
| 2050 |
|
| 2051 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
| 2052 |
{
|
| 2053 |
char local[13]; |
| 2054 |
|
| 2055 |
memcpy(local, version, 12);
|
| 2056 |
local[12] = 0; |
| 2057 |
|
| 2058 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
| 2059 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
| 2060 |
vnc_client_error(vs); |
| 2061 |
return 0; |
| 2062 |
} |
| 2063 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
| 2064 |
if (vs->major != 3 || |
| 2065 |
(vs->minor != 3 &&
|
| 2066 |
vs->minor != 4 &&
|
| 2067 |
vs->minor != 5 &&
|
| 2068 |
vs->minor != 7 &&
|
| 2069 |
vs->minor != 8)) {
|
| 2070 |
VNC_DEBUG("Unsupported client version\n");
|
| 2071 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
| 2072 |
vnc_flush(vs); |
| 2073 |
vnc_client_error(vs); |
| 2074 |
return 0; |
| 2075 |
} |
| 2076 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
| 2077 |
* as equivalent to v3.3 by servers
|
| 2078 |
*/
|
| 2079 |
if (vs->minor == 4 || vs->minor == 5) |
| 2080 |
vs->minor = 3;
|
| 2081 |
|
| 2082 |
if (vs->minor == 3) { |
| 2083 |
if (vs->vd->auth == VNC_AUTH_NONE) {
|
| 2084 |
VNC_DEBUG("Tell client auth none\n");
|
| 2085 |
vnc_write_u32(vs, vs->vd->auth); |
| 2086 |
vnc_flush(vs); |
| 2087 |
start_client_init(vs); |
| 2088 |
} else if (vs->vd->auth == VNC_AUTH_VNC) { |
| 2089 |
VNC_DEBUG("Tell client VNC auth\n");
|
| 2090 |
vnc_write_u32(vs, vs->vd->auth); |
| 2091 |
vnc_flush(vs); |
| 2092 |
start_auth_vnc(vs); |
| 2093 |
} else {
|
| 2094 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
|
| 2095 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
| 2096 |
vnc_flush(vs); |
| 2097 |
vnc_client_error(vs); |
| 2098 |
} |
| 2099 |
} else {
|
| 2100 |
VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
|
| 2101 |
vnc_write_u8(vs, 1); /* num auth */ |
| 2102 |
vnc_write_u8(vs, vs->vd->auth); |
| 2103 |
vnc_read_when(vs, protocol_client_auth, 1);
|
| 2104 |
vnc_flush(vs); |
| 2105 |
} |
| 2106 |
|
| 2107 |
return 0; |
| 2108 |
} |
| 2109 |
|
| 2110 |
static int vnc_refresh_server_surface(VncDisplay *vd) |
| 2111 |
{
|
| 2112 |
int y;
|
| 2113 |
uint8_t *guest_row; |
| 2114 |
uint8_t *server_row; |
| 2115 |
int cmp_bytes;
|
| 2116 |
uint32_t width_mask[VNC_DIRTY_WORDS]; |
| 2117 |
VncState *vs = NULL;
|
| 2118 |
int has_dirty = 0; |
| 2119 |
|
| 2120 |
/*
|
| 2121 |
* Walk through the guest dirty map.
|
| 2122 |
* Check and copy modified bits from guest to server surface.
|
| 2123 |
* Update server dirty map.
|
| 2124 |
*/
|
| 2125 |
vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
|
| 2126 |
cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
|
| 2127 |
guest_row = vd->guest.ds->data; |
| 2128 |
server_row = vd->server->data; |
| 2129 |
for (y = 0; y < vd->guest.ds->height; y++) { |
| 2130 |
if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
|
| 2131 |
int x;
|
| 2132 |
uint8_t *guest_ptr; |
| 2133 |
uint8_t *server_ptr; |
| 2134 |
|
| 2135 |
guest_ptr = guest_row; |
| 2136 |
server_ptr = server_row; |
| 2137 |
|
| 2138 |
for (x = 0; x < vd->guest.ds->width; |
| 2139 |
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
| 2140 |
if (!vnc_get_bit(vd->guest.dirty[y], (x / 16))) |
| 2141 |
continue;
|
| 2142 |
vnc_clear_bit(vd->guest.dirty[y], (x / 16));
|
| 2143 |
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
| 2144 |
continue;
|
| 2145 |
memcpy(server_ptr, guest_ptr, cmp_bytes); |
| 2146 |
vs = vd->clients; |
| 2147 |
while (vs != NULL) { |
| 2148 |
vnc_set_bit(vs->dirty[y], (x / 16));
|
| 2149 |
vs = vs->next; |
| 2150 |
} |
| 2151 |
has_dirty++; |
| 2152 |
} |
| 2153 |
} |
| 2154 |
guest_row += ds_get_linesize(vd->ds); |
| 2155 |
server_row += ds_get_linesize(vd->ds); |
| 2156 |
} |
| 2157 |
return has_dirty;
|
| 2158 |
} |
| 2159 |
|
| 2160 |
static void vnc_refresh(void *opaque) |
| 2161 |
{
|
| 2162 |
VncDisplay *vd = opaque; |
| 2163 |
VncState *vs = NULL;
|
| 2164 |
int has_dirty = 0, rects = 0; |
| 2165 |
|
| 2166 |
vga_hw_update(); |
| 2167 |
|
| 2168 |
has_dirty = vnc_refresh_server_surface(vd); |
| 2169 |
|
| 2170 |
vs = vd->clients; |
| 2171 |
while (vs != NULL) { |
| 2172 |
rects += vnc_update_client(vs, has_dirty); |
| 2173 |
vs = vs->next; |
| 2174 |
} |
| 2175 |
|
| 2176 |
if (has_dirty && rects) {
|
| 2177 |
vd->timer_interval /= 2;
|
| 2178 |
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
| 2179 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| 2180 |
} else {
|
| 2181 |
vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
| 2182 |
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
| 2183 |
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
| 2184 |
} |
| 2185 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
| 2186 |
} |
| 2187 |
|
| 2188 |
static void vnc_init_timer(VncDisplay *vd) |
| 2189 |
{
|
| 2190 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| 2191 |
if (vd->timer == NULL && vd->clients != NULL) { |
| 2192 |
vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd); |
| 2193 |
vnc_refresh(vd); |
| 2194 |
} |
| 2195 |
} |
| 2196 |
|
| 2197 |
static void vnc_remove_timer(VncDisplay *vd) |
| 2198 |
{
|
| 2199 |
if (vd->timer != NULL && vd->clients == NULL) { |
| 2200 |
qemu_del_timer(vd->timer); |
| 2201 |
qemu_free_timer(vd->timer); |
| 2202 |
vd->timer = NULL;
|
| 2203 |
} |
| 2204 |
} |
| 2205 |
|
| 2206 |
static void vnc_connect(VncDisplay *vd, int csock) |
| 2207 |
{
|
| 2208 |
VncState *vs = qemu_mallocz(sizeof(VncState));
|
| 2209 |
vs->csock = csock; |
| 2210 |
|
| 2211 |
VNC_DEBUG("New client on socket %d\n", csock);
|
| 2212 |
dcl->idle = 0;
|
| 2213 |
socket_set_nonblock(vs->csock); |
| 2214 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
| 2215 |
|
| 2216 |
vs->vd = vd; |
| 2217 |
vs->ds = vd->ds; |
| 2218 |
vs->last_x = -1;
|
| 2219 |
vs->last_y = -1;
|
| 2220 |
|
| 2221 |
vs->as.freq = 44100;
|
| 2222 |
vs->as.nchannels = 2;
|
| 2223 |
vs->as.fmt = AUD_FMT_S16; |
| 2224 |
vs->as.endianness = 0;
|
| 2225 |
|
| 2226 |
vs->next = vd->clients; |
| 2227 |
vd->clients = vs; |
| 2228 |
|
| 2229 |
vga_hw_update(); |
| 2230 |
|
| 2231 |
vnc_write(vs, "RFB 003.008\n", 12); |
| 2232 |
vnc_flush(vs); |
| 2233 |
vnc_read_when(vs, protocol_version, 12);
|
| 2234 |
reset_keys(vs); |
| 2235 |
|
| 2236 |
vnc_init_timer(vd); |
| 2237 |
|
| 2238 |
/* vs might be free()ed here */
|
| 2239 |
} |
| 2240 |
|
| 2241 |
static void vnc_listen_read(void *opaque) |
| 2242 |
{
|
| 2243 |
VncDisplay *vs = opaque; |
| 2244 |
struct sockaddr_in addr;
|
| 2245 |
socklen_t addrlen = sizeof(addr);
|
| 2246 |
|
| 2247 |
/* Catch-up */
|
| 2248 |
vga_hw_update(); |
| 2249 |
|
| 2250 |
int csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
| 2251 |
if (csock != -1) { |
| 2252 |
vnc_connect(vs, csock); |
| 2253 |
} |
| 2254 |
} |
| 2255 |
|
| 2256 |
void vnc_display_init(DisplayState *ds)
|
| 2257 |
{
|
| 2258 |
VncDisplay *vs = qemu_mallocz(sizeof(*vs));
|
| 2259 |
|
| 2260 |
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
|
| 2261 |
|
| 2262 |
ds->opaque = vs; |
| 2263 |
dcl->idle = 1;
|
| 2264 |
vnc_display = vs; |
| 2265 |
|
| 2266 |
vs->lsock = -1;
|
| 2267 |
|
| 2268 |
vs->ds = ds; |
| 2269 |
|
| 2270 |
if (keyboard_layout)
|
| 2271 |
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
| 2272 |
else
|
| 2273 |
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
| 2274 |
|
| 2275 |
if (!vs->kbd_layout)
|
| 2276 |
exit(1);
|
| 2277 |
|
| 2278 |
dcl->dpy_copy = vnc_dpy_copy; |
| 2279 |
dcl->dpy_update = vnc_dpy_update; |
| 2280 |
dcl->dpy_resize = vnc_dpy_resize; |
| 2281 |
dcl->dpy_setdata = vnc_dpy_setdata; |
| 2282 |
register_displaychangelistener(ds, dcl); |
| 2283 |
} |
| 2284 |
|
| 2285 |
|
| 2286 |
void vnc_display_close(DisplayState *ds)
|
| 2287 |
{
|
| 2288 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| 2289 |
|
| 2290 |
if (!vs)
|
| 2291 |
return;
|
| 2292 |
if (vs->display) {
|
| 2293 |
qemu_free(vs->display); |
| 2294 |
vs->display = NULL;
|
| 2295 |
} |
| 2296 |
if (vs->lsock != -1) { |
| 2297 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
| 2298 |
close(vs->lsock); |
| 2299 |
vs->lsock = -1;
|
| 2300 |
} |
| 2301 |
vs->auth = VNC_AUTH_INVALID; |
| 2302 |
#ifdef CONFIG_VNC_TLS
|
| 2303 |
vs->subauth = VNC_AUTH_INVALID; |
| 2304 |
vs->tls.x509verify = 0;
|
| 2305 |
#endif
|
| 2306 |
} |
| 2307 |
|
| 2308 |
int vnc_display_password(DisplayState *ds, const char *password) |
| 2309 |
{
|
| 2310 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| 2311 |
|
| 2312 |
if (!vs) {
|
| 2313 |
return -1; |
| 2314 |
} |
| 2315 |
|
| 2316 |
if (vs->password) {
|
| 2317 |
qemu_free(vs->password); |
| 2318 |
vs->password = NULL;
|
| 2319 |
} |
| 2320 |
if (password && password[0]) { |
| 2321 |
if (!(vs->password = qemu_strdup(password)))
|
| 2322 |
return -1; |
| 2323 |
if (vs->auth == VNC_AUTH_NONE) {
|
| 2324 |
vs->auth = VNC_AUTH_VNC; |
| 2325 |
} |
| 2326 |
} else {
|
| 2327 |
vs->auth = VNC_AUTH_NONE; |
| 2328 |
} |
| 2329 |
|
| 2330 |
return 0; |
| 2331 |
} |
| 2332 |
|
| 2333 |
char *vnc_display_local_addr(DisplayState *ds)
|
| 2334 |
{
|
| 2335 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| 2336 |
|
| 2337 |
return vnc_socket_local_addr("%s:%s", vs->lsock); |
| 2338 |
} |
| 2339 |
|
| 2340 |
int vnc_display_open(DisplayState *ds, const char *display) |
| 2341 |
{
|
| 2342 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| 2343 |
const char *options; |
| 2344 |
int password = 0; |
| 2345 |
int reverse = 0; |
| 2346 |
int to_port = 0; |
| 2347 |
#ifdef CONFIG_VNC_TLS
|
| 2348 |
int tls = 0, x509 = 0; |
| 2349 |
#endif
|
| 2350 |
#ifdef CONFIG_VNC_SASL
|
| 2351 |
int sasl = 0; |
| 2352 |
int saslErr;
|
| 2353 |
#endif
|
| 2354 |
int acl = 0; |
| 2355 |
|
| 2356 |
if (!vnc_display)
|
| 2357 |
return -1; |
| 2358 |
vnc_display_close(ds); |
| 2359 |
if (strcmp(display, "none") == 0) |
| 2360 |
return 0; |
| 2361 |
|
| 2362 |
if (!(vs->display = strdup(display)))
|
| 2363 |
return -1; |
| 2364 |
|
| 2365 |
options = display; |
| 2366 |
while ((options = strchr(options, ','))) { |
| 2367 |
options++; |
| 2368 |
if (strncmp(options, "password", 8) == 0) { |
| 2369 |
password = 1; /* Require password auth */ |
| 2370 |
} else if (strncmp(options, "reverse", 7) == 0) { |
| 2371 |
reverse = 1;
|
| 2372 |
} else if (strncmp(options, "to=", 3) == 0) { |
| 2373 |
to_port = atoi(options+3) + 5900; |
| 2374 |
#ifdef CONFIG_VNC_SASL
|
| 2375 |
} else if (strncmp(options, "sasl", 4) == 0) { |
| 2376 |
sasl = 1; /* Require SASL auth */ |
| 2377 |
#endif
|
| 2378 |
#ifdef CONFIG_VNC_TLS
|
| 2379 |
} else if (strncmp(options, "tls", 3) == 0) { |
| 2380 |
tls = 1; /* Require TLS */ |
| 2381 |
} else if (strncmp(options, "x509", 4) == 0) { |
| 2382 |
char *start, *end;
|
| 2383 |
x509 = 1; /* Require x509 certificates */ |
| 2384 |
if (strncmp(options, "x509verify", 10) == 0) |
| 2385 |
vs->tls.x509verify = 1; /* ...and verify client certs */ |
| 2386 |
|
| 2387 |
/* Now check for 'x509=/some/path' postfix
|
| 2388 |
* and use that to setup x509 certificate/key paths */
|
| 2389 |
start = strchr(options, '=');
|
| 2390 |
end = strchr(options, ',');
|
| 2391 |
if (start && (!end || (start < end))) {
|
| 2392 |
int len = end ? end-(start+1) : strlen(start+1); |
| 2393 |
char *path = qemu_strndup(start + 1, len); |
| 2394 |
|
| 2395 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
| 2396 |
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
| 2397 |
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
| 2398 |
qemu_free(path); |
| 2399 |
qemu_free(vs->display); |
| 2400 |
vs->display = NULL;
|
| 2401 |
return -1; |
| 2402 |
} |
| 2403 |
qemu_free(path); |
| 2404 |
} else {
|
| 2405 |
fprintf(stderr, "No certificate path provided\n");
|
| 2406 |
qemu_free(vs->display); |
| 2407 |
vs->display = NULL;
|
| 2408 |
return -1; |
| 2409 |
} |
| 2410 |
#endif
|
| 2411 |
} else if (strncmp(options, "acl", 3) == 0) { |
| 2412 |
acl = 1;
|
| 2413 |
} |
| 2414 |
} |
| 2415 |
|
| 2416 |
#ifdef CONFIG_VNC_TLS
|
| 2417 |
if (acl && x509 && vs->tls.x509verify) {
|
| 2418 |
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
| 2419 |
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
| 2420 |
exit(1);
|
| 2421 |
} |
| 2422 |
} |
| 2423 |
#endif
|
| 2424 |
#ifdef CONFIG_VNC_SASL
|
| 2425 |
if (acl && sasl) {
|
| 2426 |
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
| 2427 |
fprintf(stderr, "Failed to create username ACL\n");
|
| 2428 |
exit(1);
|
| 2429 |
} |
| 2430 |
} |
| 2431 |
#endif
|
| 2432 |
|
| 2433 |
/*
|
| 2434 |
* Combinations we support here:
|
| 2435 |
*
|
| 2436 |
* - no-auth (clear text, no auth)
|
| 2437 |
* - password (clear text, weak auth)
|
| 2438 |
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
| 2439 |
* - tls (encrypt, weak anonymous creds, no auth)
|
| 2440 |
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
| 2441 |
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
| 2442 |
* - tls + x509 (encrypt, good x509 creds, no auth)
|
| 2443 |
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
| 2444 |
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
| 2445 |
*
|
| 2446 |
* NB1. TLS is a stackable auth scheme.
|
| 2447 |
* NB2. the x509 schemes have option to validate a client cert dname
|
| 2448 |
*/
|
| 2449 |
if (password) {
|
| 2450 |
#ifdef CONFIG_VNC_TLS
|
| 2451 |
if (tls) {
|
| 2452 |
vs->auth = VNC_AUTH_VENCRYPT; |
| 2453 |
if (x509) {
|
| 2454 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
| 2455 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
| 2456 |
} else {
|
| 2457 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
| 2458 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
| 2459 |
} |
| 2460 |
} else {
|
| 2461 |
#endif /* CONFIG_VNC_TLS */ |
| 2462 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
| 2463 |
vs->auth = VNC_AUTH_VNC; |
| 2464 |
#ifdef CONFIG_VNC_TLS
|
| 2465 |
vs->subauth = VNC_AUTH_INVALID; |
| 2466 |
} |
| 2467 |
#endif /* CONFIG_VNC_TLS */ |
| 2468 |
#ifdef CONFIG_VNC_SASL
|
| 2469 |
} else if (sasl) { |
| 2470 |
#ifdef CONFIG_VNC_TLS
|
| 2471 |
if (tls) {
|
| 2472 |
vs->auth = VNC_AUTH_VENCRYPT; |
| 2473 |
if (x509) {
|
| 2474 |
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
| 2475 |
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
| 2476 |
} else {
|
| 2477 |
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
| 2478 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
| 2479 |
} |
| 2480 |
} else {
|
| 2481 |
#endif /* CONFIG_VNC_TLS */ |
| 2482 |
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
| 2483 |
vs->auth = VNC_AUTH_SASL; |
| 2484 |
#ifdef CONFIG_VNC_TLS
|
| 2485 |
vs->subauth = VNC_AUTH_INVALID; |
| 2486 |
} |
| 2487 |
#endif /* CONFIG_VNC_TLS */ |
| 2488 |
#endif /* CONFIG_VNC_SASL */ |
| 2489 |
} else {
|
| 2490 |
#ifdef CONFIG_VNC_TLS
|
| 2491 |
if (tls) {
|
| 2492 |
vs->auth = VNC_AUTH_VENCRYPT; |
| 2493 |
if (x509) {
|
| 2494 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
| 2495 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
| 2496 |
} else {
|
| 2497 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
| 2498 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
| 2499 |
} |
| 2500 |
} else {
|
| 2501 |
#endif
|
| 2502 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
| 2503 |
vs->auth = VNC_AUTH_NONE; |
| 2504 |
#ifdef CONFIG_VNC_TLS
|
| 2505 |
vs->subauth = VNC_AUTH_INVALID; |
| 2506 |
} |
| 2507 |
#endif
|
| 2508 |
} |
| 2509 |
|
| 2510 |
#ifdef CONFIG_VNC_SASL
|
| 2511 |
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
| 2512 |
fprintf(stderr, "Failed to initialize SASL auth %s",
|
| 2513 |
sasl_errstring(saslErr, NULL, NULL)); |
| 2514 |
free(vs->display); |
| 2515 |
vs->display = NULL;
|
| 2516 |
return -1; |
| 2517 |
} |
| 2518 |
#endif
|
| 2519 |
|
| 2520 |
if (reverse) {
|
| 2521 |
/* connect to viewer */
|
| 2522 |
if (strncmp(display, "unix:", 5) == 0) |
| 2523 |
vs->lsock = unix_connect(display+5);
|
| 2524 |
else
|
| 2525 |
vs->lsock = inet_connect(display, SOCK_STREAM); |
| 2526 |
if (-1 == vs->lsock) { |
| 2527 |
free(vs->display); |
| 2528 |
vs->display = NULL;
|
| 2529 |
return -1; |
| 2530 |
} else {
|
| 2531 |
int csock = vs->lsock;
|
| 2532 |
vs->lsock = -1;
|
| 2533 |
vnc_connect(vs, csock); |
| 2534 |
} |
| 2535 |
return 0; |
| 2536 |
|
| 2537 |
} else {
|
| 2538 |
/* listen for connects */
|
| 2539 |
char *dpy;
|
| 2540 |
dpy = qemu_malloc(256);
|
| 2541 |
if (strncmp(display, "unix:", 5) == 0) { |
| 2542 |
pstrcpy(dpy, 256, "unix:"); |
| 2543 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
| 2544 |
} else {
|
| 2545 |
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900); |
| 2546 |
} |
| 2547 |
if (-1 == vs->lsock) { |
| 2548 |
free(dpy); |
| 2549 |
return -1; |
| 2550 |
} else {
|
| 2551 |
free(vs->display); |
| 2552 |
vs->display = dpy; |
| 2553 |
} |
| 2554 |
} |
| 2555 |
return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
| 2556 |
} |