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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 "vnc-jobs.h" |
29 |
#include "sysemu.h" |
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#include "qemu/sockets.h" |
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#include "qemu/timer.h" |
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#include "qemu/acl.h" |
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#include "qapi/qmp/types.h" |
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#include "qmp-commands.h" |
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#include "qemu/osdep.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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static const struct timeval VNC_REFRESH_STATS = { 0, 500000 }; |
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static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 }; |
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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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static VncDisplay *vnc_display; /* needed for info vnc */ |
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static DisplayChangeListener *dcl;
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|
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static int vnc_cursor_define(VncState *vs); |
50 |
static void vnc_release_modifiers(VncState *vs); |
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|
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static void vnc_set_share_mode(VncState *vs, VncShareMode mode) |
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{ |
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#ifdef _VNC_DEBUG
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static const char *mn[] = { |
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[0] = "undefined", |
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[VNC_SHARE_MODE_CONNECTING] = "connecting",
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[VNC_SHARE_MODE_SHARED] = "shared",
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[VNC_SHARE_MODE_EXCLUSIVE] = "exclusive",
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[VNC_SHARE_MODE_DISCONNECTED] = "disconnected",
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}; |
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fprintf(stderr, "%s/%d: %s -> %s\n", __func__,
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vs->csock, mn[vs->share_mode], mn[mode]); |
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#endif
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|
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if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) {
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vs->vd->num_exclusive--; |
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} |
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vs->share_mode = mode; |
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if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) {
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vs->vd->num_exclusive++; |
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} |
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} |
74 |
|
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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 = g_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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|
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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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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; |
122 |
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return addr_to_string(format, &sa, salen);
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} |
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|
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static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa, |
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socklen_t salen) |
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{ |
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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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|
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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 -1; |
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} |
141 |
|
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qdict_put(qdict, "host", qstring_from_str(host));
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qdict_put(qdict, "service", qstring_from_str(serv));
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qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family)));
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return 0; |
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} |
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static int vnc_server_addr_put(QDict *qdict, int fd) |
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{ |
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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 -1; |
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} |
158 |
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return put_addr_qdict(qdict, &sa, salen);
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} |
161 |
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static int vnc_qdict_remote_addr(QDict *qdict, int fd) |
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{ |
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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 -1; |
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} |
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return put_addr_qdict(qdict, &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"; |
189 |
case VNC_AUTH_ULTRA:
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return "ultra"; |
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case VNC_AUTH_TLS:
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return "tls"; |
193 |
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"; |
200 |
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"; |
216 |
} |
217 |
#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 int vnc_server_info_put(QDict *qdict) |
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{ |
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if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) { |
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return -1; |
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} |
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qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display)));
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return 0; |
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} |
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static void vnc_client_cache_auth(VncState *client) |
237 |
{ |
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#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
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QDict *qdict; |
240 |
#endif
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242 |
if (!client->info) {
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return;
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} |
245 |
|
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#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
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qdict = qobject_to_qdict(client->info); |
248 |
#endif
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|
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#ifdef CONFIG_VNC_TLS
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if (client->tls.session &&
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client->tls.dname) { |
253 |
qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname));
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} |
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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) { |
259 |
qdict_put(qdict, "sasl_username",
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qstring_from_str(client->sasl.username)); |
261 |
} |
262 |
#endif
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} |
264 |
|
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static void vnc_client_cache_addr(VncState *client) |
266 |
{ |
267 |
QDict *qdict; |
268 |
|
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qdict = qdict_new(); |
270 |
if (vnc_qdict_remote_addr(qdict, client->csock) < 0) { |
271 |
QDECREF(qdict); |
272 |
/* XXX: how to report the error? */
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return;
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274 |
} |
275 |
|
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client->info = QOBJECT(qdict); |
277 |
} |
278 |
|
279 |
static void vnc_qmp_event(VncState *vs, MonitorEvent event) |
280 |
{ |
281 |
QDict *server; |
282 |
QObject *data; |
283 |
|
284 |
if (!vs->info) {
|
285 |
return;
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286 |
} |
287 |
|
288 |
server = qdict_new(); |
289 |
if (vnc_server_info_put(server) < 0) { |
290 |
QDECREF(server); |
291 |
return;
|
292 |
} |
293 |
|
294 |
data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
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295 |
vs->info, QOBJECT(server)); |
296 |
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297 |
monitor_protocol_event(event, data); |
298 |
|
299 |
qobject_incref(vs->info); |
300 |
qobject_decref(data); |
301 |
} |
302 |
|
303 |
static VncClientInfo *qmp_query_vnc_client(const VncState *client) |
304 |
{ |
305 |
struct sockaddr_storage sa;
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306 |
socklen_t salen = sizeof(sa);
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307 |
char host[NI_MAXHOST];
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308 |
char serv[NI_MAXSERV];
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VncClientInfo *info; |
310 |
|
311 |
if (getpeername(client->csock, (struct sockaddr *)&sa, &salen) < 0) { |
312 |
return NULL; |
313 |
} |
314 |
|
315 |
if (getnameinfo((struct sockaddr *)&sa, salen, |
316 |
host, sizeof(host),
|
317 |
serv, sizeof(serv),
|
318 |
NI_NUMERICHOST | NI_NUMERICSERV) < 0) {
|
319 |
return NULL; |
320 |
} |
321 |
|
322 |
info = g_malloc0(sizeof(*info));
|
323 |
info->host = g_strdup(host); |
324 |
info->service = g_strdup(serv); |
325 |
info->family = g_strdup(inet_strfamily(sa.ss_family)); |
326 |
|
327 |
#ifdef CONFIG_VNC_TLS
|
328 |
if (client->tls.session && client->tls.dname) {
|
329 |
info->has_x509_dname = true;
|
330 |
info->x509_dname = g_strdup(client->tls.dname); |
331 |
} |
332 |
#endif
|
333 |
#ifdef CONFIG_VNC_SASL
|
334 |
if (client->sasl.conn && client->sasl.username) {
|
335 |
info->has_sasl_username = true;
|
336 |
info->sasl_username = g_strdup(client->sasl.username); |
337 |
} |
338 |
#endif
|
339 |
|
340 |
return info;
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341 |
} |
342 |
|
343 |
VncInfo *qmp_query_vnc(Error **errp) |
344 |
{ |
345 |
VncInfo *info = g_malloc0(sizeof(*info));
|
346 |
|
347 |
if (vnc_display == NULL || vnc_display->display == NULL) { |
348 |
info->enabled = false;
|
349 |
} else {
|
350 |
VncClientInfoList *cur_item = NULL;
|
351 |
struct sockaddr_storage sa;
|
352 |
socklen_t salen = sizeof(sa);
|
353 |
char host[NI_MAXHOST];
|
354 |
char serv[NI_MAXSERV];
|
355 |
VncState *client; |
356 |
|
357 |
info->enabled = true;
|
358 |
|
359 |
/* for compatibility with the original command */
|
360 |
info->has_clients = true;
|
361 |
|
362 |
QTAILQ_FOREACH(client, &vnc_display->clients, next) { |
363 |
VncClientInfoList *cinfo = g_malloc0(sizeof(*info));
|
364 |
cinfo->value = qmp_query_vnc_client(client); |
365 |
|
366 |
/* XXX: waiting for the qapi to support GSList */
|
367 |
if (!cur_item) {
|
368 |
info->clients = cur_item = cinfo; |
369 |
} else {
|
370 |
cur_item->next = cinfo; |
371 |
cur_item = cinfo; |
372 |
} |
373 |
} |
374 |
|
375 |
if (vnc_display->lsock == -1) { |
376 |
return info;
|
377 |
} |
378 |
|
379 |
if (getsockname(vnc_display->lsock, (struct sockaddr *)&sa, |
380 |
&salen) == -1) {
|
381 |
error_set(errp, QERR_UNDEFINED_ERROR); |
382 |
goto out_error;
|
383 |
} |
384 |
|
385 |
if (getnameinfo((struct sockaddr *)&sa, salen, |
386 |
host, sizeof(host),
|
387 |
serv, sizeof(serv),
|
388 |
NI_NUMERICHOST | NI_NUMERICSERV) < 0) {
|
389 |
error_set(errp, QERR_UNDEFINED_ERROR); |
390 |
goto out_error;
|
391 |
} |
392 |
|
393 |
info->has_host = true;
|
394 |
info->host = g_strdup(host); |
395 |
|
396 |
info->has_service = true;
|
397 |
info->service = g_strdup(serv); |
398 |
|
399 |
info->has_family = true;
|
400 |
info->family = g_strdup(inet_strfamily(sa.ss_family)); |
401 |
|
402 |
info->has_auth = true;
|
403 |
info->auth = g_strdup(vnc_auth_name(vnc_display)); |
404 |
} |
405 |
|
406 |
return info;
|
407 |
|
408 |
out_error:
|
409 |
qapi_free_VncInfo(info); |
410 |
return NULL; |
411 |
} |
412 |
|
413 |
/* TODO
|
414 |
1) Get the queue working for IO.
|
415 |
2) there is some weirdness when using the -S option (the screen is grey
|
416 |
and not totally invalidated
|
417 |
3) resolutions > 1024
|
418 |
*/
|
419 |
|
420 |
static int vnc_update_client(VncState *vs, int has_dirty); |
421 |
static int vnc_update_client_sync(VncState *vs, int has_dirty); |
422 |
static void vnc_disconnect_start(VncState *vs); |
423 |
static void vnc_disconnect_finish(VncState *vs); |
424 |
static void vnc_init_timer(VncDisplay *vd); |
425 |
static void vnc_remove_timer(VncDisplay *vd); |
426 |
|
427 |
static void vnc_colordepth(VncState *vs); |
428 |
static void framebuffer_update_request(VncState *vs, int incremental, |
429 |
int x_position, int y_position, |
430 |
int w, int h); |
431 |
static void vnc_refresh(void *opaque); |
432 |
static int vnc_refresh_server_surface(VncDisplay *vd); |
433 |
|
434 |
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
435 |
{ |
436 |
int i;
|
437 |
VncDisplay *vd = ds->opaque; |
438 |
struct VncSurface *s = &vd->guest;
|
439 |
int width = ds_get_width(ds);
|
440 |
int height = ds_get_height(ds);
|
441 |
|
442 |
h += y; |
443 |
|
444 |
/* round x down to ensure the loop only spans one 16-pixel block per,
|
445 |
iteration. otherwise, if (x % 16) != 0, the last iteration may span
|
446 |
two 16-pixel blocks but we only mark the first as dirty
|
447 |
*/
|
448 |
w += (x % 16);
|
449 |
x -= (x % 16);
|
450 |
|
451 |
x = MIN(x, width); |
452 |
y = MIN(y, height); |
453 |
w = MIN(x + w, width) - x; |
454 |
h = MIN(h, height); |
455 |
|
456 |
for (; y < h; y++)
|
457 |
for (i = 0; i < w; i += 16) |
458 |
set_bit((x + i) / 16, s->dirty[y]);
|
459 |
} |
460 |
|
461 |
void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
462 |
int32_t encoding) |
463 |
{ |
464 |
vnc_write_u16(vs, x); |
465 |
vnc_write_u16(vs, y); |
466 |
vnc_write_u16(vs, w); |
467 |
vnc_write_u16(vs, h); |
468 |
|
469 |
vnc_write_s32(vs, encoding); |
470 |
} |
471 |
|
472 |
void buffer_reserve(Buffer *buffer, size_t len)
|
473 |
{ |
474 |
if ((buffer->capacity - buffer->offset) < len) {
|
475 |
buffer->capacity += (len + 1024);
|
476 |
buffer->buffer = g_realloc(buffer->buffer, buffer->capacity); |
477 |
if (buffer->buffer == NULL) { |
478 |
fprintf(stderr, "vnc: out of memory\n");
|
479 |
exit(1);
|
480 |
} |
481 |
} |
482 |
} |
483 |
|
484 |
static int buffer_empty(Buffer *buffer) |
485 |
{ |
486 |
return buffer->offset == 0; |
487 |
} |
488 |
|
489 |
static uint8_t *buffer_end(Buffer *buffer)
|
490 |
{ |
491 |
return buffer->buffer + buffer->offset;
|
492 |
} |
493 |
|
494 |
void buffer_reset(Buffer *buffer)
|
495 |
{ |
496 |
buffer->offset = 0;
|
497 |
} |
498 |
|
499 |
void buffer_free(Buffer *buffer)
|
500 |
{ |
501 |
g_free(buffer->buffer); |
502 |
buffer->offset = 0;
|
503 |
buffer->capacity = 0;
|
504 |
buffer->buffer = NULL;
|
505 |
} |
506 |
|
507 |
void buffer_append(Buffer *buffer, const void *data, size_t len) |
508 |
{ |
509 |
memcpy(buffer->buffer + buffer->offset, data, len); |
510 |
buffer->offset += len; |
511 |
} |
512 |
|
513 |
static void vnc_desktop_resize(VncState *vs) |
514 |
{ |
515 |
DisplayState *ds = vs->ds; |
516 |
|
517 |
if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
518 |
return;
|
519 |
} |
520 |
if (vs->client_width == ds_get_width(ds) &&
|
521 |
vs->client_height == ds_get_height(ds)) { |
522 |
return;
|
523 |
} |
524 |
vs->client_width = ds_get_width(ds); |
525 |
vs->client_height = ds_get_height(ds); |
526 |
vnc_lock_output(vs); |
527 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
528 |
vnc_write_u8(vs, 0);
|
529 |
vnc_write_u16(vs, 1); /* number of rects */ |
530 |
vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height, |
531 |
VNC_ENCODING_DESKTOPRESIZE); |
532 |
vnc_unlock_output(vs); |
533 |
vnc_flush(vs); |
534 |
} |
535 |
|
536 |
static void vnc_abort_display_jobs(VncDisplay *vd) |
537 |
{ |
538 |
VncState *vs; |
539 |
|
540 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
541 |
vnc_lock_output(vs); |
542 |
vs->abort = true;
|
543 |
vnc_unlock_output(vs); |
544 |
} |
545 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
546 |
vnc_jobs_join(vs); |
547 |
} |
548 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
549 |
vnc_lock_output(vs); |
550 |
vs->abort = false;
|
551 |
vnc_unlock_output(vs); |
552 |
} |
553 |
} |
554 |
|
555 |
int vnc_server_fb_stride(VncDisplay *vd)
|
556 |
{ |
557 |
return pixman_image_get_stride(vd->server);
|
558 |
} |
559 |
|
560 |
void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y) |
561 |
{ |
562 |
uint8_t *ptr; |
563 |
|
564 |
ptr = (uint8_t *)pixman_image_get_data(vd->server); |
565 |
ptr += y * vnc_server_fb_stride(vd); |
566 |
ptr += x * VNC_SERVER_FB_BYTES; |
567 |
return ptr;
|
568 |
} |
569 |
|
570 |
static void vnc_dpy_resize(DisplayState *ds) |
571 |
{ |
572 |
VncDisplay *vd = ds->opaque; |
573 |
VncState *vs; |
574 |
|
575 |
vnc_abort_display_jobs(vd); |
576 |
|
577 |
/* server surface */
|
578 |
qemu_pixman_image_unref(vd->server); |
579 |
vd->server = pixman_image_create_bits(VNC_SERVER_FB_FORMAT, |
580 |
ds_get_width(ds), |
581 |
ds_get_height(ds), |
582 |
NULL, 0); |
583 |
|
584 |
/* guest surface */
|
585 |
#if 0 /* FIXME */
|
586 |
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
587 |
console_color_init(ds);
|
588 |
#endif
|
589 |
qemu_pixman_image_unref(vd->guest.fb); |
590 |
vd->guest.fb = pixman_image_ref(ds->surface->image); |
591 |
vd->guest.format = ds->surface->format; |
592 |
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
593 |
|
594 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
595 |
vnc_colordepth(vs); |
596 |
vnc_desktop_resize(vs); |
597 |
if (vs->vd->cursor) {
|
598 |
vnc_cursor_define(vs); |
599 |
} |
600 |
memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
601 |
} |
602 |
} |
603 |
|
604 |
/* fastest code */
|
605 |
static void vnc_write_pixels_copy(VncState *vs, |
606 |
void *pixels, int size) |
607 |
{ |
608 |
vnc_write(vs, pixels, size); |
609 |
} |
610 |
|
611 |
/* slowest but generic code. */
|
612 |
void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
|
613 |
{ |
614 |
uint8_t r, g, b; |
615 |
|
616 |
#if VNC_SERVER_FB_FORMAT == PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8) |
617 |
r = (((v & 0x00ff0000) >> 16) << vs->client_pf.rbits) >> 8; |
618 |
g = (((v & 0x0000ff00) >> 8) << vs->client_pf.gbits) >> 8; |
619 |
b = (((v & 0x000000ff) >> 0) << vs->client_pf.bbits) >> 8; |
620 |
#else
|
621 |
# error need some bits here if you change VNC_SERVER_FB_FORMAT |
622 |
#endif
|
623 |
v = (r << vs->client_pf.rshift) | |
624 |
(g << vs->client_pf.gshift) | |
625 |
(b << vs->client_pf.bshift); |
626 |
switch (vs->client_pf.bytes_per_pixel) {
|
627 |
case 1: |
628 |
buf[0] = v;
|
629 |
break;
|
630 |
case 2: |
631 |
if (vs->client_be) {
|
632 |
buf[0] = v >> 8; |
633 |
buf[1] = v;
|
634 |
} else {
|
635 |
buf[1] = v >> 8; |
636 |
buf[0] = v;
|
637 |
} |
638 |
break;
|
639 |
default:
|
640 |
case 4: |
641 |
if (vs->client_be) {
|
642 |
buf[0] = v >> 24; |
643 |
buf[1] = v >> 16; |
644 |
buf[2] = v >> 8; |
645 |
buf[3] = v;
|
646 |
} else {
|
647 |
buf[3] = v >> 24; |
648 |
buf[2] = v >> 16; |
649 |
buf[1] = v >> 8; |
650 |
buf[0] = v;
|
651 |
} |
652 |
break;
|
653 |
} |
654 |
} |
655 |
|
656 |
static void vnc_write_pixels_generic(VncState *vs, |
657 |
void *pixels1, int size) |
658 |
{ |
659 |
uint8_t buf[4];
|
660 |
|
661 |
if (VNC_SERVER_FB_BYTES == 4) { |
662 |
uint32_t *pixels = pixels1; |
663 |
int n, i;
|
664 |
n = size >> 2;
|
665 |
for (i = 0; i < n; i++) { |
666 |
vnc_convert_pixel(vs, buf, pixels[i]); |
667 |
vnc_write(vs, buf, vs->client_pf.bytes_per_pixel); |
668 |
} |
669 |
} |
670 |
} |
671 |
|
672 |
int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
673 |
{ |
674 |
int i;
|
675 |
uint8_t *row; |
676 |
VncDisplay *vd = vs->vd; |
677 |
|
678 |
row = vnc_server_fb_ptr(vd, x, y); |
679 |
for (i = 0; i < h; i++) { |
680 |
vs->write_pixels(vs, row, w * VNC_SERVER_FB_BYTES); |
681 |
row += vnc_server_fb_stride(vd); |
682 |
} |
683 |
return 1; |
684 |
} |
685 |
|
686 |
int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
687 |
{ |
688 |
int n = 0; |
689 |
|
690 |
switch(vs->vnc_encoding) {
|
691 |
case VNC_ENCODING_ZLIB:
|
692 |
n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h); |
693 |
break;
|
694 |
case VNC_ENCODING_HEXTILE:
|
695 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
696 |
n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h); |
697 |
break;
|
698 |
case VNC_ENCODING_TIGHT:
|
699 |
n = vnc_tight_send_framebuffer_update(vs, x, y, w, h); |
700 |
break;
|
701 |
case VNC_ENCODING_TIGHT_PNG:
|
702 |
n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h); |
703 |
break;
|
704 |
case VNC_ENCODING_ZRLE:
|
705 |
n = vnc_zrle_send_framebuffer_update(vs, x, y, w, h); |
706 |
break;
|
707 |
case VNC_ENCODING_ZYWRLE:
|
708 |
n = vnc_zywrle_send_framebuffer_update(vs, x, y, w, h); |
709 |
break;
|
710 |
default:
|
711 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
712 |
n = vnc_raw_send_framebuffer_update(vs, x, y, w, h); |
713 |
break;
|
714 |
} |
715 |
return n;
|
716 |
} |
717 |
|
718 |
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
719 |
{ |
720 |
/* send bitblit op to the vnc client */
|
721 |
vnc_lock_output(vs); |
722 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
723 |
vnc_write_u8(vs, 0);
|
724 |
vnc_write_u16(vs, 1); /* number of rects */ |
725 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
726 |
vnc_write_u16(vs, src_x); |
727 |
vnc_write_u16(vs, src_y); |
728 |
vnc_unlock_output(vs); |
729 |
vnc_flush(vs); |
730 |
} |
731 |
|
732 |
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
733 |
{ |
734 |
VncDisplay *vd = ds->opaque; |
735 |
VncState *vs, *vn; |
736 |
uint8_t *src_row; |
737 |
uint8_t *dst_row; |
738 |
int i, x, y, pitch, inc, w_lim, s;
|
739 |
int cmp_bytes;
|
740 |
|
741 |
vnc_refresh_server_surface(vd); |
742 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
743 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
744 |
vs->force_update = 1;
|
745 |
vnc_update_client_sync(vs, 1);
|
746 |
/* vs might be free()ed here */
|
747 |
} |
748 |
} |
749 |
|
750 |
/* do bitblit op on the local surface too */
|
751 |
pitch = vnc_server_fb_stride(vd); |
752 |
src_row = vnc_server_fb_ptr(vd, src_x, src_y); |
753 |
dst_row = vnc_server_fb_ptr(vd, dst_x, dst_y); |
754 |
y = dst_y; |
755 |
inc = 1;
|
756 |
if (dst_y > src_y) {
|
757 |
/* copy backwards */
|
758 |
src_row += pitch * (h-1);
|
759 |
dst_row += pitch * (h-1);
|
760 |
pitch = -pitch; |
761 |
y = dst_y + h - 1;
|
762 |
inc = -1;
|
763 |
} |
764 |
w_lim = w - (16 - (dst_x % 16)); |
765 |
if (w_lim < 0) |
766 |
w_lim = w; |
767 |
else
|
768 |
w_lim = w - (w_lim % 16);
|
769 |
for (i = 0; i < h; i++) { |
770 |
for (x = 0; x <= w_lim; |
771 |
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) { |
772 |
if (x == w_lim) {
|
773 |
if ((s = w - w_lim) == 0) |
774 |
break;
|
775 |
} else if (!x) { |
776 |
s = (16 - (dst_x % 16)); |
777 |
s = MIN(s, w_lim); |
778 |
} else {
|
779 |
s = 16;
|
780 |
} |
781 |
cmp_bytes = s * VNC_SERVER_FB_BYTES; |
782 |
if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
783 |
continue;
|
784 |
memmove(dst_row, src_row, cmp_bytes); |
785 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
786 |
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
787 |
set_bit(((x + dst_x) / 16), vs->dirty[y]);
|
788 |
} |
789 |
} |
790 |
} |
791 |
src_row += pitch - w * VNC_SERVER_FB_BYTES; |
792 |
dst_row += pitch - w * VNC_SERVER_FB_BYTES; |
793 |
y += inc; |
794 |
} |
795 |
|
796 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
797 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
798 |
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
799 |
} |
800 |
} |
801 |
} |
802 |
|
803 |
static void vnc_mouse_set(DisplayState *ds, int x, int y, int visible) |
804 |
{ |
805 |
/* can we ask the client(s) to move the pointer ??? */
|
806 |
} |
807 |
|
808 |
static int vnc_cursor_define(VncState *vs) |
809 |
{ |
810 |
QEMUCursor *c = vs->vd->cursor; |
811 |
int isize;
|
812 |
|
813 |
if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
|
814 |
vnc_lock_output(vs); |
815 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
816 |
vnc_write_u8(vs, 0); /* padding */ |
817 |
vnc_write_u16(vs, 1); /* # of rects */ |
818 |
vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height, |
819 |
VNC_ENCODING_RICH_CURSOR); |
820 |
isize = c->width * c->height * vs->client_pf.bytes_per_pixel; |
821 |
vnc_write_pixels_generic(vs, c->data, isize); |
822 |
vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize); |
823 |
vnc_unlock_output(vs); |
824 |
return 0; |
825 |
} |
826 |
return -1; |
827 |
} |
828 |
|
829 |
static void vnc_dpy_cursor_define(DisplayState *ds, QEMUCursor *c) |
830 |
{ |
831 |
VncDisplay *vd = vnc_display; |
832 |
VncState *vs; |
833 |
|
834 |
cursor_put(vd->cursor); |
835 |
g_free(vd->cursor_mask); |
836 |
|
837 |
vd->cursor = c; |
838 |
cursor_get(vd->cursor); |
839 |
vd->cursor_msize = cursor_get_mono_bpl(c) * c->height; |
840 |
vd->cursor_mask = g_malloc0(vd->cursor_msize); |
841 |
cursor_get_mono_mask(c, 0, vd->cursor_mask);
|
842 |
|
843 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
844 |
vnc_cursor_define(vs); |
845 |
} |
846 |
} |
847 |
|
848 |
static int find_and_clear_dirty_height(struct VncState *vs, |
849 |
int y, int last_x, int x, int height) |
850 |
{ |
851 |
int h;
|
852 |
|
853 |
for (h = 1; h < (height - y); h++) { |
854 |
int tmp_x;
|
855 |
if (!test_bit(last_x, vs->dirty[y + h])) {
|
856 |
break;
|
857 |
} |
858 |
for (tmp_x = last_x; tmp_x < x; tmp_x++) {
|
859 |
clear_bit(tmp_x, vs->dirty[y + h]); |
860 |
} |
861 |
} |
862 |
|
863 |
return h;
|
864 |
} |
865 |
|
866 |
static int vnc_update_client_sync(VncState *vs, int has_dirty) |
867 |
{ |
868 |
int ret = vnc_update_client(vs, has_dirty);
|
869 |
vnc_jobs_join(vs); |
870 |
return ret;
|
871 |
} |
872 |
|
873 |
static int vnc_update_client(VncState *vs, int has_dirty) |
874 |
{ |
875 |
if (vs->need_update && vs->csock != -1) { |
876 |
VncDisplay *vd = vs->vd; |
877 |
VncJob *job; |
878 |
int y;
|
879 |
int width, height;
|
880 |
int n = 0; |
881 |
|
882 |
|
883 |
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
884 |
/* kernel send buffers are full -> drop frames to throttle */
|
885 |
return 0; |
886 |
|
887 |
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
888 |
return 0; |
889 |
|
890 |
/*
|
891 |
* Send screen updates to the vnc client using the server
|
892 |
* surface and server dirty map. guest surface updates
|
893 |
* happening in parallel don't disturb us, the next pass will
|
894 |
* send them to the client.
|
895 |
*/
|
896 |
job = vnc_job_new(vs); |
897 |
|
898 |
width = MIN(pixman_image_get_width(vd->server), vs->client_width); |
899 |
height = MIN(pixman_image_get_height(vd->server), vs->client_height); |
900 |
|
901 |
for (y = 0; y < height; y++) { |
902 |
int x;
|
903 |
int last_x = -1; |
904 |
for (x = 0; x < width / 16; x++) { |
905 |
if (test_and_clear_bit(x, vs->dirty[y])) {
|
906 |
if (last_x == -1) { |
907 |
last_x = x; |
908 |
} |
909 |
} else {
|
910 |
if (last_x != -1) { |
911 |
int h = find_and_clear_dirty_height(vs, y, last_x, x,
|
912 |
height); |
913 |
|
914 |
n += vnc_job_add_rect(job, last_x * 16, y,
|
915 |
(x - last_x) * 16, h);
|
916 |
} |
917 |
last_x = -1;
|
918 |
} |
919 |
} |
920 |
if (last_x != -1) { |
921 |
int h = find_and_clear_dirty_height(vs, y, last_x, x, height);
|
922 |
n += vnc_job_add_rect(job, last_x * 16, y,
|
923 |
(x - last_x) * 16, h);
|
924 |
} |
925 |
} |
926 |
|
927 |
vnc_job_push(job); |
928 |
vs->force_update = 0;
|
929 |
return n;
|
930 |
} |
931 |
|
932 |
if (vs->csock == -1) |
933 |
vnc_disconnect_finish(vs); |
934 |
|
935 |
return 0; |
936 |
} |
937 |
|
938 |
/* audio */
|
939 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
940 |
{ |
941 |
VncState *vs = opaque; |
942 |
|
943 |
switch (cmd) {
|
944 |
case AUD_CNOTIFY_DISABLE:
|
945 |
vnc_lock_output(vs); |
946 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
947 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
948 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END); |
949 |
vnc_unlock_output(vs); |
950 |
vnc_flush(vs); |
951 |
break;
|
952 |
|
953 |
case AUD_CNOTIFY_ENABLE:
|
954 |
vnc_lock_output(vs); |
955 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
956 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
957 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN); |
958 |
vnc_unlock_output(vs); |
959 |
vnc_flush(vs); |
960 |
break;
|
961 |
} |
962 |
} |
963 |
|
964 |
static void audio_capture_destroy(void *opaque) |
965 |
{ |
966 |
} |
967 |
|
968 |
static void audio_capture(void *opaque, void *buf, int size) |
969 |
{ |
970 |
VncState *vs = opaque; |
971 |
|
972 |
vnc_lock_output(vs); |
973 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
974 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
975 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA); |
976 |
vnc_write_u32(vs, size); |
977 |
vnc_write(vs, buf, size); |
978 |
vnc_unlock_output(vs); |
979 |
vnc_flush(vs); |
980 |
} |
981 |
|
982 |
static void audio_add(VncState *vs) |
983 |
{ |
984 |
struct audio_capture_ops ops;
|
985 |
|
986 |
if (vs->audio_cap) {
|
987 |
monitor_printf(default_mon, "audio already running\n");
|
988 |
return;
|
989 |
} |
990 |
|
991 |
ops.notify = audio_capture_notify; |
992 |
ops.destroy = audio_capture_destroy; |
993 |
ops.capture = audio_capture; |
994 |
|
995 |
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
996 |
if (!vs->audio_cap) {
|
997 |
monitor_printf(default_mon, "Failed to add audio capture\n");
|
998 |
} |
999 |
} |
1000 |
|
1001 |
static void audio_del(VncState *vs) |
1002 |
{ |
1003 |
if (vs->audio_cap) {
|
1004 |
AUD_del_capture(vs->audio_cap, vs); |
1005 |
vs->audio_cap = NULL;
|
1006 |
} |
1007 |
} |
1008 |
|
1009 |
static void vnc_disconnect_start(VncState *vs) |
1010 |
{ |
1011 |
if (vs->csock == -1) |
1012 |
return;
|
1013 |
vnc_set_share_mode(vs, VNC_SHARE_MODE_DISCONNECTED); |
1014 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
1015 |
closesocket(vs->csock); |
1016 |
vs->csock = -1;
|
1017 |
} |
1018 |
|
1019 |
static void vnc_disconnect_finish(VncState *vs) |
1020 |
{ |
1021 |
int i;
|
1022 |
|
1023 |
vnc_jobs_join(vs); /* Wait encoding jobs */
|
1024 |
|
1025 |
vnc_lock_output(vs); |
1026 |
vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED); |
1027 |
|
1028 |
buffer_free(&vs->input); |
1029 |
buffer_free(&vs->output); |
1030 |
|
1031 |
qobject_decref(vs->info); |
1032 |
|
1033 |
vnc_zlib_clear(vs); |
1034 |
vnc_tight_clear(vs); |
1035 |
vnc_zrle_clear(vs); |
1036 |
|
1037 |
#ifdef CONFIG_VNC_TLS
|
1038 |
vnc_tls_client_cleanup(vs); |
1039 |
#endif /* CONFIG_VNC_TLS */ |
1040 |
#ifdef CONFIG_VNC_SASL
|
1041 |
vnc_sasl_client_cleanup(vs); |
1042 |
#endif /* CONFIG_VNC_SASL */ |
1043 |
audio_del(vs); |
1044 |
vnc_release_modifiers(vs); |
1045 |
|
1046 |
QTAILQ_REMOVE(&vs->vd->clients, vs, next); |
1047 |
|
1048 |
if (QTAILQ_EMPTY(&vs->vd->clients)) {
|
1049 |
dcl->idle = 1;
|
1050 |
} |
1051 |
|
1052 |
qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
1053 |
vnc_remove_timer(vs->vd); |
1054 |
if (vs->vd->lock_key_sync)
|
1055 |
qemu_remove_led_event_handler(vs->led); |
1056 |
vnc_unlock_output(vs); |
1057 |
|
1058 |
qemu_mutex_destroy(&vs->output_mutex); |
1059 |
qemu_bh_delete(vs->bh); |
1060 |
buffer_free(&vs->jobs_buffer); |
1061 |
|
1062 |
for (i = 0; i < VNC_STAT_ROWS; ++i) { |
1063 |
g_free(vs->lossy_rect[i]); |
1064 |
} |
1065 |
g_free(vs->lossy_rect); |
1066 |
g_free(vs); |
1067 |
} |
1068 |
|
1069 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
1070 |
{ |
1071 |
if (ret == 0 || ret == -1) { |
1072 |
if (ret == -1) { |
1073 |
switch (last_errno) {
|
1074 |
case EINTR:
|
1075 |
case EAGAIN:
|
1076 |
#ifdef _WIN32
|
1077 |
case WSAEWOULDBLOCK:
|
1078 |
#endif
|
1079 |
return 0; |
1080 |
default:
|
1081 |
break;
|
1082 |
} |
1083 |
} |
1084 |
|
1085 |
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
1086 |
ret, ret < 0 ? last_errno : 0); |
1087 |
vnc_disconnect_start(vs); |
1088 |
|
1089 |
return 0; |
1090 |
} |
1091 |
return ret;
|
1092 |
} |
1093 |
|
1094 |
|
1095 |
void vnc_client_error(VncState *vs)
|
1096 |
{ |
1097 |
VNC_DEBUG("Closing down client sock: protocol error\n");
|
1098 |
vnc_disconnect_start(vs); |
1099 |
} |
1100 |
|
1101 |
|
1102 |
/*
|
1103 |
* Called to write a chunk of data to the client socket. The data may
|
1104 |
* be the raw data, or may have already been encoded by SASL.
|
1105 |
* The data will be written either straight onto the socket, or
|
1106 |
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1107 |
*
|
1108 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1109 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1110 |
* though, since SASL encryption will typically be a no-op if TLS
|
1111 |
* is active
|
1112 |
*
|
1113 |
* Returns the number of bytes written, which may be less than
|
1114 |
* the requested 'datalen' if the socket would block. Returns
|
1115 |
* -1 on error, and disconnects the client socket.
|
1116 |
*/
|
1117 |
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
1118 |
{ |
1119 |
long ret;
|
1120 |
#ifdef CONFIG_VNC_TLS
|
1121 |
if (vs->tls.session) {
|
1122 |
ret = gnutls_write(vs->tls.session, data, datalen); |
1123 |
if (ret < 0) { |
1124 |
if (ret == GNUTLS_E_AGAIN)
|
1125 |
errno = EAGAIN; |
1126 |
else
|
1127 |
errno = EIO; |
1128 |
ret = -1;
|
1129 |
} |
1130 |
} else
|
1131 |
#endif /* CONFIG_VNC_TLS */ |
1132 |
ret = send(vs->csock, (const void *)data, datalen, 0); |
1133 |
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
1134 |
return vnc_client_io_error(vs, ret, socket_error());
|
1135 |
} |
1136 |
|
1137 |
|
1138 |
/*
|
1139 |
* Called to write buffered data to the client socket, when not
|
1140 |
* using any SASL SSF encryption layers. Will write as much data
|
1141 |
* as possible without blocking. If all buffered data is written,
|
1142 |
* will switch the FD poll() handler back to read monitoring.
|
1143 |
*
|
1144 |
* Returns the number of bytes written, which may be less than
|
1145 |
* the buffered output data if the socket would block. Returns
|
1146 |
* -1 on error, and disconnects the client socket.
|
1147 |
*/
|
1148 |
static long vnc_client_write_plain(VncState *vs) |
1149 |
{ |
1150 |
long ret;
|
1151 |
|
1152 |
#ifdef CONFIG_VNC_SASL
|
1153 |
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
1154 |
vs->output.buffer, vs->output.capacity, vs->output.offset, |
1155 |
vs->sasl.waitWriteSSF); |
1156 |
|
1157 |
if (vs->sasl.conn &&
|
1158 |
vs->sasl.runSSF && |
1159 |
vs->sasl.waitWriteSSF) { |
1160 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
1161 |
if (ret)
|
1162 |
vs->sasl.waitWriteSSF -= ret; |
1163 |
} else
|
1164 |
#endif /* CONFIG_VNC_SASL */ |
1165 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
1166 |
if (!ret)
|
1167 |
return 0; |
1168 |
|
1169 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
1170 |
vs->output.offset -= ret; |
1171 |
|
1172 |
if (vs->output.offset == 0) { |
1173 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
1174 |
} |
1175 |
|
1176 |
return ret;
|
1177 |
} |
1178 |
|
1179 |
|
1180 |
/*
|
1181 |
* First function called whenever there is data to be written to
|
1182 |
* the client socket. Will delegate actual work according to whether
|
1183 |
* SASL SSF layers are enabled (thus requiring encryption calls)
|
1184 |
*/
|
1185 |
static void vnc_client_write_locked(void *opaque) |
1186 |
{ |
1187 |
VncState *vs = opaque; |
1188 |
|
1189 |
#ifdef CONFIG_VNC_SASL
|
1190 |
if (vs->sasl.conn &&
|
1191 |
vs->sasl.runSSF && |
1192 |
!vs->sasl.waitWriteSSF) { |
1193 |
vnc_client_write_sasl(vs); |
1194 |
} else
|
1195 |
#endif /* CONFIG_VNC_SASL */ |
1196 |
vnc_client_write_plain(vs); |
1197 |
} |
1198 |
|
1199 |
void vnc_client_write(void *opaque) |
1200 |
{ |
1201 |
VncState *vs = opaque; |
1202 |
|
1203 |
vnc_lock_output(vs); |
1204 |
if (vs->output.offset) {
|
1205 |
vnc_client_write_locked(opaque); |
1206 |
} else if (vs->csock != -1) { |
1207 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
1208 |
} |
1209 |
vnc_unlock_output(vs); |
1210 |
} |
1211 |
|
1212 |
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
1213 |
{ |
1214 |
vs->read_handler = func; |
1215 |
vs->read_handler_expect = expecting; |
1216 |
} |
1217 |
|
1218 |
|
1219 |
/*
|
1220 |
* Called to read a chunk of data from the client socket. The data may
|
1221 |
* be the raw data, or may need to be further decoded by SASL.
|
1222 |
* The data will be read either straight from to the socket, or
|
1223 |
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1224 |
*
|
1225 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1226 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1227 |
* though, since SASL encryption will typically be a no-op if TLS
|
1228 |
* is active
|
1229 |
*
|
1230 |
* Returns the number of bytes read, which may be less than
|
1231 |
* the requested 'datalen' if the socket would block. Returns
|
1232 |
* -1 on error, and disconnects the client socket.
|
1233 |
*/
|
1234 |
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
1235 |
{ |
1236 |
long ret;
|
1237 |
#ifdef CONFIG_VNC_TLS
|
1238 |
if (vs->tls.session) {
|
1239 |
ret = gnutls_read(vs->tls.session, data, datalen); |
1240 |
if (ret < 0) { |
1241 |
if (ret == GNUTLS_E_AGAIN)
|
1242 |
errno = EAGAIN; |
1243 |
else
|
1244 |
errno = EIO; |
1245 |
ret = -1;
|
1246 |
} |
1247 |
} else
|
1248 |
#endif /* CONFIG_VNC_TLS */ |
1249 |
ret = qemu_recv(vs->csock, data, datalen, 0);
|
1250 |
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
1251 |
return vnc_client_io_error(vs, ret, socket_error());
|
1252 |
} |
1253 |
|
1254 |
|
1255 |
/*
|
1256 |
* Called to read data from the client socket to the input buffer,
|
1257 |
* when not using any SASL SSF encryption layers. Will read as much
|
1258 |
* data as possible without blocking.
|
1259 |
*
|
1260 |
* Returns the number of bytes read. Returns -1 on error, and
|
1261 |
* disconnects the client socket.
|
1262 |
*/
|
1263 |
static long vnc_client_read_plain(VncState *vs) |
1264 |
{ |
1265 |
int ret;
|
1266 |
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
1267 |
vs->input.buffer, vs->input.capacity, vs->input.offset); |
1268 |
buffer_reserve(&vs->input, 4096);
|
1269 |
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
1270 |
if (!ret)
|
1271 |
return 0; |
1272 |
vs->input.offset += ret; |
1273 |
return ret;
|
1274 |
} |
1275 |
|
1276 |
static void vnc_jobs_bh(void *opaque) |
1277 |
{ |
1278 |
VncState *vs = opaque; |
1279 |
|
1280 |
vnc_jobs_consume_buffer(vs); |
1281 |
} |
1282 |
|
1283 |
/*
|
1284 |
* First function called whenever there is more data to be read from
|
1285 |
* the client socket. Will delegate actual work according to whether
|
1286 |
* SASL SSF layers are enabled (thus requiring decryption calls)
|
1287 |
*/
|
1288 |
void vnc_client_read(void *opaque) |
1289 |
{ |
1290 |
VncState *vs = opaque; |
1291 |
long ret;
|
1292 |
|
1293 |
#ifdef CONFIG_VNC_SASL
|
1294 |
if (vs->sasl.conn && vs->sasl.runSSF)
|
1295 |
ret = vnc_client_read_sasl(vs); |
1296 |
else
|
1297 |
#endif /* CONFIG_VNC_SASL */ |
1298 |
ret = vnc_client_read_plain(vs); |
1299 |
if (!ret) {
|
1300 |
if (vs->csock == -1) |
1301 |
vnc_disconnect_finish(vs); |
1302 |
return;
|
1303 |
} |
1304 |
|
1305 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
1306 |
size_t len = vs->read_handler_expect; |
1307 |
int ret;
|
1308 |
|
1309 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
1310 |
if (vs->csock == -1) { |
1311 |
vnc_disconnect_finish(vs); |
1312 |
return;
|
1313 |
} |
1314 |
|
1315 |
if (!ret) {
|
1316 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
1317 |
vs->input.offset -= len; |
1318 |
} else {
|
1319 |
vs->read_handler_expect = ret; |
1320 |
} |
1321 |
} |
1322 |
} |
1323 |
|
1324 |
void vnc_write(VncState *vs, const void *data, size_t len) |
1325 |
{ |
1326 |
buffer_reserve(&vs->output, len); |
1327 |
|
1328 |
if (vs->csock != -1 && buffer_empty(&vs->output)) { |
1329 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
1330 |
} |
1331 |
|
1332 |
buffer_append(&vs->output, data, len); |
1333 |
} |
1334 |
|
1335 |
void vnc_write_s32(VncState *vs, int32_t value)
|
1336 |
{ |
1337 |
vnc_write_u32(vs, *(uint32_t *)&value); |
1338 |
} |
1339 |
|
1340 |
void vnc_write_u32(VncState *vs, uint32_t value)
|
1341 |
{ |
1342 |
uint8_t buf[4];
|
1343 |
|
1344 |
buf[0] = (value >> 24) & 0xFF; |
1345 |
buf[1] = (value >> 16) & 0xFF; |
1346 |
buf[2] = (value >> 8) & 0xFF; |
1347 |
buf[3] = value & 0xFF; |
1348 |
|
1349 |
vnc_write(vs, buf, 4);
|
1350 |
} |
1351 |
|
1352 |
void vnc_write_u16(VncState *vs, uint16_t value)
|
1353 |
{ |
1354 |
uint8_t buf[2];
|
1355 |
|
1356 |
buf[0] = (value >> 8) & 0xFF; |
1357 |
buf[1] = value & 0xFF; |
1358 |
|
1359 |
vnc_write(vs, buf, 2);
|
1360 |
} |
1361 |
|
1362 |
void vnc_write_u8(VncState *vs, uint8_t value)
|
1363 |
{ |
1364 |
vnc_write(vs, (char *)&value, 1); |
1365 |
} |
1366 |
|
1367 |
void vnc_flush(VncState *vs)
|
1368 |
{ |
1369 |
vnc_lock_output(vs); |
1370 |
if (vs->csock != -1 && vs->output.offset) { |
1371 |
vnc_client_write_locked(vs); |
1372 |
} |
1373 |
vnc_unlock_output(vs); |
1374 |
} |
1375 |
|
1376 |
static uint8_t read_u8(uint8_t *data, size_t offset)
|
1377 |
{ |
1378 |
return data[offset];
|
1379 |
} |
1380 |
|
1381 |
static uint16_t read_u16(uint8_t *data, size_t offset)
|
1382 |
{ |
1383 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
1384 |
} |
1385 |
|
1386 |
static int32_t read_s32(uint8_t *data, size_t offset)
|
1387 |
{ |
1388 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
1389 |
(data[offset + 2] << 8) | data[offset + 3]); |
1390 |
} |
1391 |
|
1392 |
uint32_t read_u32(uint8_t *data, size_t offset) |
1393 |
{ |
1394 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
1395 |
(data[offset + 2] << 8) | data[offset + 3]); |
1396 |
} |
1397 |
|
1398 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
1399 |
{ |
1400 |
} |
1401 |
|
1402 |
static void check_pointer_type_change(Notifier *notifier, void *data) |
1403 |
{ |
1404 |
VncState *vs = container_of(notifier, VncState, mouse_mode_notifier); |
1405 |
int absolute = kbd_mouse_is_absolute();
|
1406 |
|
1407 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
1408 |
vnc_lock_output(vs); |
1409 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1410 |
vnc_write_u8(vs, 0);
|
1411 |
vnc_write_u16(vs, 1);
|
1412 |
vnc_framebuffer_update(vs, absolute, 0,
|
1413 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
1414 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
1415 |
vnc_unlock_output(vs); |
1416 |
vnc_flush(vs); |
1417 |
} |
1418 |
vs->absolute = absolute; |
1419 |
} |
1420 |
|
1421 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
1422 |
{ |
1423 |
int buttons = 0; |
1424 |
int dz = 0; |
1425 |
|
1426 |
if (button_mask & 0x01) |
1427 |
buttons |= MOUSE_EVENT_LBUTTON; |
1428 |
if (button_mask & 0x02) |
1429 |
buttons |= MOUSE_EVENT_MBUTTON; |
1430 |
if (button_mask & 0x04) |
1431 |
buttons |= MOUSE_EVENT_RBUTTON; |
1432 |
if (button_mask & 0x08) |
1433 |
dz = -1;
|
1434 |
if (button_mask & 0x10) |
1435 |
dz = 1;
|
1436 |
|
1437 |
if (vs->absolute) {
|
1438 |
kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
|
1439 |
x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000, |
1440 |
ds_get_height(vs->ds) > 1 ?
|
1441 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000, |
1442 |
dz, buttons); |
1443 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
1444 |
x -= 0x7FFF;
|
1445 |
y -= 0x7FFF;
|
1446 |
|
1447 |
kbd_mouse_event(x, y, dz, buttons); |
1448 |
} else {
|
1449 |
if (vs->last_x != -1) |
1450 |
kbd_mouse_event(x - vs->last_x, |
1451 |
y - vs->last_y, |
1452 |
dz, buttons); |
1453 |
vs->last_x = x; |
1454 |
vs->last_y = y; |
1455 |
} |
1456 |
} |
1457 |
|
1458 |
static void reset_keys(VncState *vs) |
1459 |
{ |
1460 |
int i;
|
1461 |
for(i = 0; i < 256; i++) { |
1462 |
if (vs->modifiers_state[i]) {
|
1463 |
if (i & SCANCODE_GREY)
|
1464 |
kbd_put_keycode(SCANCODE_EMUL0); |
1465 |
kbd_put_keycode(i | SCANCODE_UP); |
1466 |
vs->modifiers_state[i] = 0;
|
1467 |
} |
1468 |
} |
1469 |
} |
1470 |
|
1471 |
static void press_key(VncState *vs, int keysym) |
1472 |
{ |
1473 |
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
|
1474 |
if (keycode & SCANCODE_GREY)
|
1475 |
kbd_put_keycode(SCANCODE_EMUL0); |
1476 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1477 |
if (keycode & SCANCODE_GREY)
|
1478 |
kbd_put_keycode(SCANCODE_EMUL0); |
1479 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1480 |
} |
1481 |
|
1482 |
static void kbd_leds(void *opaque, int ledstate) |
1483 |
{ |
1484 |
VncState *vs = opaque; |
1485 |
int caps, num;
|
1486 |
|
1487 |
caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0; |
1488 |
num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0; |
1489 |
|
1490 |
if (vs->modifiers_state[0x3a] != caps) { |
1491 |
vs->modifiers_state[0x3a] = caps;
|
1492 |
} |
1493 |
if (vs->modifiers_state[0x45] != num) { |
1494 |
vs->modifiers_state[0x45] = num;
|
1495 |
} |
1496 |
} |
1497 |
|
1498 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
1499 |
{ |
1500 |
/* QEMU console switch */
|
1501 |
switch(keycode) {
|
1502 |
case 0x2a: /* Left Shift */ |
1503 |
case 0x36: /* Right Shift */ |
1504 |
case 0x1d: /* Left CTRL */ |
1505 |
case 0x9d: /* Right CTRL */ |
1506 |
case 0x38: /* Left ALT */ |
1507 |
case 0xb8: /* Right ALT */ |
1508 |
if (down)
|
1509 |
vs->modifiers_state[keycode] = 1;
|
1510 |
else
|
1511 |
vs->modifiers_state[keycode] = 0;
|
1512 |
break;
|
1513 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
1514 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
1515 |
/* Reset the modifiers sent to the current console */
|
1516 |
reset_keys(vs); |
1517 |
console_select(keycode - 0x02);
|
1518 |
return;
|
1519 |
} |
1520 |
break;
|
1521 |
case 0x3a: /* CapsLock */ |
1522 |
case 0x45: /* NumLock */ |
1523 |
if (down)
|
1524 |
vs->modifiers_state[keycode] ^= 1;
|
1525 |
break;
|
1526 |
} |
1527 |
|
1528 |
if (down && vs->vd->lock_key_sync &&
|
1529 |
keycode_is_keypad(vs->vd->kbd_layout, keycode)) { |
1530 |
/* If the numlock state needs to change then simulate an additional
|
1531 |
keypress before sending this one. This will happen if the user
|
1532 |
toggles numlock away from the VNC window.
|
1533 |
*/
|
1534 |
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
1535 |
if (!vs->modifiers_state[0x45]) { |
1536 |
vs->modifiers_state[0x45] = 1; |
1537 |
press_key(vs, 0xff7f);
|
1538 |
} |
1539 |
} else {
|
1540 |
if (vs->modifiers_state[0x45]) { |
1541 |
vs->modifiers_state[0x45] = 0; |
1542 |
press_key(vs, 0xff7f);
|
1543 |
} |
1544 |
} |
1545 |
} |
1546 |
|
1547 |
if (down && vs->vd->lock_key_sync &&
|
1548 |
((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) { |
1549 |
/* If the capslock state needs to change then simulate an additional
|
1550 |
keypress before sending this one. This will happen if the user
|
1551 |
toggles capslock away from the VNC window.
|
1552 |
*/
|
1553 |
int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
1554 |
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
1555 |
int capslock = !!(vs->modifiers_state[0x3a]); |
1556 |
if (capslock) {
|
1557 |
if (uppercase == shift) {
|
1558 |
vs->modifiers_state[0x3a] = 0; |
1559 |
press_key(vs, 0xffe5);
|
1560 |
} |
1561 |
} else {
|
1562 |
if (uppercase != shift) {
|
1563 |
vs->modifiers_state[0x3a] = 1; |
1564 |
press_key(vs, 0xffe5);
|
1565 |
} |
1566 |
} |
1567 |
} |
1568 |
|
1569 |
if (is_graphic_console()) {
|
1570 |
if (keycode & SCANCODE_GREY)
|
1571 |
kbd_put_keycode(SCANCODE_EMUL0); |
1572 |
if (down)
|
1573 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1574 |
else
|
1575 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1576 |
} else {
|
1577 |
bool numlock = vs->modifiers_state[0x45]; |
1578 |
bool control = (vs->modifiers_state[0x1d] || |
1579 |
vs->modifiers_state[0x9d]);
|
1580 |
/* QEMU console emulation */
|
1581 |
if (down) {
|
1582 |
switch (keycode) {
|
1583 |
case 0x2a: /* Left Shift */ |
1584 |
case 0x36: /* Right Shift */ |
1585 |
case 0x1d: /* Left CTRL */ |
1586 |
case 0x9d: /* Right CTRL */ |
1587 |
case 0x38: /* Left ALT */ |
1588 |
case 0xb8: /* Right ALT */ |
1589 |
break;
|
1590 |
case 0xc8: |
1591 |
kbd_put_keysym(QEMU_KEY_UP); |
1592 |
break;
|
1593 |
case 0xd0: |
1594 |
kbd_put_keysym(QEMU_KEY_DOWN); |
1595 |
break;
|
1596 |
case 0xcb: |
1597 |
kbd_put_keysym(QEMU_KEY_LEFT); |
1598 |
break;
|
1599 |
case 0xcd: |
1600 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
1601 |
break;
|
1602 |
case 0xd3: |
1603 |
kbd_put_keysym(QEMU_KEY_DELETE); |
1604 |
break;
|
1605 |
case 0xc7: |
1606 |
kbd_put_keysym(QEMU_KEY_HOME); |
1607 |
break;
|
1608 |
case 0xcf: |
1609 |
kbd_put_keysym(QEMU_KEY_END); |
1610 |
break;
|
1611 |
case 0xc9: |
1612 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
1613 |
break;
|
1614 |
case 0xd1: |
1615 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
1616 |
break;
|
1617 |
|
1618 |
case 0x47: |
1619 |
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
1620 |
break;
|
1621 |
case 0x48: |
1622 |
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
1623 |
break;
|
1624 |
case 0x49: |
1625 |
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
1626 |
break;
|
1627 |
case 0x4b: |
1628 |
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
1629 |
break;
|
1630 |
case 0x4c: |
1631 |
kbd_put_keysym('5');
|
1632 |
break;
|
1633 |
case 0x4d: |
1634 |
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
1635 |
break;
|
1636 |
case 0x4f: |
1637 |
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
1638 |
break;
|
1639 |
case 0x50: |
1640 |
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
1641 |
break;
|
1642 |
case 0x51: |
1643 |
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
1644 |
break;
|
1645 |
case 0x52: |
1646 |
kbd_put_keysym('0');
|
1647 |
break;
|
1648 |
case 0x53: |
1649 |
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
1650 |
break;
|
1651 |
|
1652 |
case 0xb5: |
1653 |
kbd_put_keysym('/');
|
1654 |
break;
|
1655 |
case 0x37: |
1656 |
kbd_put_keysym('*');
|
1657 |
break;
|
1658 |
case 0x4a: |
1659 |
kbd_put_keysym('-');
|
1660 |
break;
|
1661 |
case 0x4e: |
1662 |
kbd_put_keysym('+');
|
1663 |
break;
|
1664 |
case 0x9c: |
1665 |
kbd_put_keysym('\n');
|
1666 |
break;
|
1667 |
|
1668 |
default:
|
1669 |
if (control) {
|
1670 |
kbd_put_keysym(sym & 0x1f);
|
1671 |
} else {
|
1672 |
kbd_put_keysym(sym); |
1673 |
} |
1674 |
break;
|
1675 |
} |
1676 |
} |
1677 |
} |
1678 |
} |
1679 |
|
1680 |
static void vnc_release_modifiers(VncState *vs) |
1681 |
{ |
1682 |
static const int keycodes[] = { |
1683 |
/* shift, control, alt keys, both left & right */
|
1684 |
0x2a, 0x36, 0x1d, 0x9d, 0x38, 0xb8, |
1685 |
}; |
1686 |
int i, keycode;
|
1687 |
|
1688 |
if (!is_graphic_console()) {
|
1689 |
return;
|
1690 |
} |
1691 |
for (i = 0; i < ARRAY_SIZE(keycodes); i++) { |
1692 |
keycode = keycodes[i]; |
1693 |
if (!vs->modifiers_state[keycode]) {
|
1694 |
continue;
|
1695 |
} |
1696 |
if (keycode & SCANCODE_GREY) {
|
1697 |
kbd_put_keycode(SCANCODE_EMUL0); |
1698 |
} |
1699 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1700 |
} |
1701 |
} |
1702 |
|
1703 |
static void key_event(VncState *vs, int down, uint32_t sym) |
1704 |
{ |
1705 |
int keycode;
|
1706 |
int lsym = sym;
|
1707 |
|
1708 |
if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) { |
1709 |
lsym = lsym - 'A' + 'a'; |
1710 |
} |
1711 |
|
1712 |
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
|
1713 |
do_key_event(vs, down, keycode, sym); |
1714 |
} |
1715 |
|
1716 |
static void ext_key_event(VncState *vs, int down, |
1717 |
uint32_t sym, uint16_t keycode) |
1718 |
{ |
1719 |
/* if the user specifies a keyboard layout, always use it */
|
1720 |
if (keyboard_layout)
|
1721 |
key_event(vs, down, sym); |
1722 |
else
|
1723 |
do_key_event(vs, down, keycode, sym); |
1724 |
} |
1725 |
|
1726 |
static void framebuffer_update_request(VncState *vs, int incremental, |
1727 |
int x_position, int y_position, |
1728 |
int w, int h) |
1729 |
{ |
1730 |
int i;
|
1731 |
const size_t width = ds_get_width(vs->ds) / 16; |
1732 |
|
1733 |
if (y_position > ds_get_height(vs->ds))
|
1734 |
y_position = ds_get_height(vs->ds); |
1735 |
if (y_position + h >= ds_get_height(vs->ds))
|
1736 |
h = ds_get_height(vs->ds) - y_position; |
1737 |
|
1738 |
vs->need_update = 1;
|
1739 |
if (!incremental) {
|
1740 |
vs->force_update = 1;
|
1741 |
for (i = 0; i < h; i++) { |
1742 |
bitmap_set(vs->dirty[y_position + i], 0, width);
|
1743 |
bitmap_clear(vs->dirty[y_position + i], width, |
1744 |
VNC_DIRTY_BITS - width); |
1745 |
} |
1746 |
} |
1747 |
} |
1748 |
|
1749 |
static void send_ext_key_event_ack(VncState *vs) |
1750 |
{ |
1751 |
vnc_lock_output(vs); |
1752 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1753 |
vnc_write_u8(vs, 0);
|
1754 |
vnc_write_u16(vs, 1);
|
1755 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1756 |
VNC_ENCODING_EXT_KEY_EVENT); |
1757 |
vnc_unlock_output(vs); |
1758 |
vnc_flush(vs); |
1759 |
} |
1760 |
|
1761 |
static void send_ext_audio_ack(VncState *vs) |
1762 |
{ |
1763 |
vnc_lock_output(vs); |
1764 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1765 |
vnc_write_u8(vs, 0);
|
1766 |
vnc_write_u16(vs, 1);
|
1767 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1768 |
VNC_ENCODING_AUDIO); |
1769 |
vnc_unlock_output(vs); |
1770 |
vnc_flush(vs); |
1771 |
} |
1772 |
|
1773 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
1774 |
{ |
1775 |
int i;
|
1776 |
unsigned int enc = 0; |
1777 |
|
1778 |
vs->features = 0;
|
1779 |
vs->vnc_encoding = 0;
|
1780 |
vs->tight.compression = 9;
|
1781 |
vs->tight.quality = -1; /* Lossless by default */ |
1782 |
vs->absolute = -1;
|
1783 |
|
1784 |
/*
|
1785 |
* Start from the end because the encodings are sent in order of preference.
|
1786 |
* This way the preferred encoding (first encoding defined in the array)
|
1787 |
* will be set at the end of the loop.
|
1788 |
*/
|
1789 |
for (i = n_encodings - 1; i >= 0; i--) { |
1790 |
enc = encodings[i]; |
1791 |
switch (enc) {
|
1792 |
case VNC_ENCODING_RAW:
|
1793 |
vs->vnc_encoding = enc; |
1794 |
break;
|
1795 |
case VNC_ENCODING_COPYRECT:
|
1796 |
vs->features |= VNC_FEATURE_COPYRECT_MASK; |
1797 |
break;
|
1798 |
case VNC_ENCODING_HEXTILE:
|
1799 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
1800 |
vs->vnc_encoding = enc; |
1801 |
break;
|
1802 |
case VNC_ENCODING_TIGHT:
|
1803 |
vs->features |= VNC_FEATURE_TIGHT_MASK; |
1804 |
vs->vnc_encoding = enc; |
1805 |
break;
|
1806 |
#ifdef CONFIG_VNC_PNG
|
1807 |
case VNC_ENCODING_TIGHT_PNG:
|
1808 |
vs->features |= VNC_FEATURE_TIGHT_PNG_MASK; |
1809 |
vs->vnc_encoding = enc; |
1810 |
break;
|
1811 |
#endif
|
1812 |
case VNC_ENCODING_ZLIB:
|
1813 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
1814 |
vs->vnc_encoding = enc; |
1815 |
break;
|
1816 |
case VNC_ENCODING_ZRLE:
|
1817 |
vs->features |= VNC_FEATURE_ZRLE_MASK; |
1818 |
vs->vnc_encoding = enc; |
1819 |
break;
|
1820 |
case VNC_ENCODING_ZYWRLE:
|
1821 |
vs->features |= VNC_FEATURE_ZYWRLE_MASK; |
1822 |
vs->vnc_encoding = enc; |
1823 |
break;
|
1824 |
case VNC_ENCODING_DESKTOPRESIZE:
|
1825 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
1826 |
break;
|
1827 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
1828 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
1829 |
break;
|
1830 |
case VNC_ENCODING_RICH_CURSOR:
|
1831 |
vs->features |= VNC_FEATURE_RICH_CURSOR_MASK; |
1832 |
break;
|
1833 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
1834 |
send_ext_key_event_ack(vs); |
1835 |
break;
|
1836 |
case VNC_ENCODING_AUDIO:
|
1837 |
send_ext_audio_ack(vs); |
1838 |
break;
|
1839 |
case VNC_ENCODING_WMVi:
|
1840 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
1841 |
break;
|
1842 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
1843 |
vs->tight.compression = (enc & 0x0F);
|
1844 |
break;
|
1845 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
1846 |
if (vs->vd->lossy) {
|
1847 |
vs->tight.quality = (enc & 0x0F);
|
1848 |
} |
1849 |
break;
|
1850 |
default:
|
1851 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
1852 |
break;
|
1853 |
} |
1854 |
} |
1855 |
vnc_desktop_resize(vs); |
1856 |
check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
|
1857 |
} |
1858 |
|
1859 |
static void set_pixel_conversion(VncState *vs) |
1860 |
{ |
1861 |
pixman_format_code_t fmt = qemu_pixman_get_format(&vs->client_pf); |
1862 |
|
1863 |
if (fmt == VNC_SERVER_FB_FORMAT) {
|
1864 |
vs->write_pixels = vnc_write_pixels_copy; |
1865 |
vnc_hextile_set_pixel_conversion(vs, 0);
|
1866 |
} else {
|
1867 |
vs->write_pixels = vnc_write_pixels_generic; |
1868 |
vnc_hextile_set_pixel_conversion(vs, 1);
|
1869 |
} |
1870 |
} |
1871 |
|
1872 |
static void set_pixel_format(VncState *vs, |
1873 |
int bits_per_pixel, int depth, |
1874 |
int big_endian_flag, int true_color_flag, |
1875 |
int red_max, int green_max, int blue_max, |
1876 |
int red_shift, int green_shift, int blue_shift) |
1877 |
{ |
1878 |
if (!true_color_flag) {
|
1879 |
vnc_client_error(vs); |
1880 |
return;
|
1881 |
} |
1882 |
|
1883 |
vs->client_pf.rmax = red_max; |
1884 |
vs->client_pf.rbits = hweight_long(red_max); |
1885 |
vs->client_pf.rshift = red_shift; |
1886 |
vs->client_pf.rmask = red_max << red_shift; |
1887 |
vs->client_pf.gmax = green_max; |
1888 |
vs->client_pf.gbits = hweight_long(green_max); |
1889 |
vs->client_pf.gshift = green_shift; |
1890 |
vs->client_pf.gmask = green_max << green_shift; |
1891 |
vs->client_pf.bmax = blue_max; |
1892 |
vs->client_pf.bbits = hweight_long(blue_max); |
1893 |
vs->client_pf.bshift = blue_shift; |
1894 |
vs->client_pf.bmask = blue_max << blue_shift; |
1895 |
vs->client_pf.bits_per_pixel = bits_per_pixel; |
1896 |
vs->client_pf.bytes_per_pixel = bits_per_pixel / 8;
|
1897 |
vs->client_pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
1898 |
vs->client_be = big_endian_flag; |
1899 |
|
1900 |
set_pixel_conversion(vs); |
1901 |
|
1902 |
vga_hw_invalidate(); |
1903 |
vga_hw_update(); |
1904 |
} |
1905 |
|
1906 |
static void pixel_format_message (VncState *vs) { |
1907 |
char pad[3] = { 0, 0, 0 }; |
1908 |
|
1909 |
vs->client_pf = qemu_default_pixelformat(32);
|
1910 |
|
1911 |
vnc_write_u8(vs, vs->client_pf.bits_per_pixel); /* bits-per-pixel */
|
1912 |
vnc_write_u8(vs, vs->client_pf.depth); /* depth */
|
1913 |
|
1914 |
#ifdef HOST_WORDS_BIGENDIAN
|
1915 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
1916 |
#else
|
1917 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
1918 |
#endif
|
1919 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
1920 |
vnc_write_u16(vs, vs->client_pf.rmax); /* red-max */
|
1921 |
vnc_write_u16(vs, vs->client_pf.gmax); /* green-max */
|
1922 |
vnc_write_u16(vs, vs->client_pf.bmax); /* blue-max */
|
1923 |
vnc_write_u8(vs, vs->client_pf.rshift); /* red-shift */
|
1924 |
vnc_write_u8(vs, vs->client_pf.gshift); /* green-shift */
|
1925 |
vnc_write_u8(vs, vs->client_pf.bshift); /* blue-shift */
|
1926 |
vnc_write(vs, pad, 3); /* padding */ |
1927 |
|
1928 |
vnc_hextile_set_pixel_conversion(vs, 0);
|
1929 |
vs->write_pixels = vnc_write_pixels_copy; |
1930 |
} |
1931 |
|
1932 |
static void vnc_dpy_setdata(DisplayState *ds) |
1933 |
{ |
1934 |
VncDisplay *vd = ds->opaque; |
1935 |
|
1936 |
qemu_pixman_image_unref(vd->guest.fb); |
1937 |
vd->guest.fb = pixman_image_ref(ds->surface->image); |
1938 |
vd->guest.format = ds->surface->format; |
1939 |
vnc_dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds)); |
1940 |
} |
1941 |
|
1942 |
static void vnc_colordepth(VncState *vs) |
1943 |
{ |
1944 |
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
1945 |
/* Sending a WMVi message to notify the client*/
|
1946 |
vnc_lock_output(vs); |
1947 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1948 |
vnc_write_u8(vs, 0);
|
1949 |
vnc_write_u16(vs, 1); /* number of rects */ |
1950 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
1951 |
ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
1952 |
pixel_format_message(vs); |
1953 |
vnc_unlock_output(vs); |
1954 |
vnc_flush(vs); |
1955 |
} else {
|
1956 |
set_pixel_conversion(vs); |
1957 |
} |
1958 |
} |
1959 |
|
1960 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
1961 |
{ |
1962 |
int i;
|
1963 |
uint16_t limit; |
1964 |
VncDisplay *vd = vs->vd; |
1965 |
|
1966 |
if (data[0] > 3) { |
1967 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
1968 |
if (!qemu_timer_expired(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval))
|
1969 |
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval); |
1970 |
} |
1971 |
|
1972 |
switch (data[0]) { |
1973 |
case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
|
1974 |
if (len == 1) |
1975 |
return 20; |
1976 |
|
1977 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
1978 |
read_u8(data, 6), read_u8(data, 7), |
1979 |
read_u16(data, 8), read_u16(data, 10), |
1980 |
read_u16(data, 12), read_u8(data, 14), |
1981 |
read_u8(data, 15), read_u8(data, 16)); |
1982 |
break;
|
1983 |
case VNC_MSG_CLIENT_SET_ENCODINGS:
|
1984 |
if (len == 1) |
1985 |
return 4; |
1986 |
|
1987 |
if (len == 4) { |
1988 |
limit = read_u16(data, 2);
|
1989 |
if (limit > 0) |
1990 |
return 4 + (limit * 4); |
1991 |
} else
|
1992 |
limit = read_u16(data, 2);
|
1993 |
|
1994 |
for (i = 0; i < limit; i++) { |
1995 |
int32_t val = read_s32(data, 4 + (i * 4)); |
1996 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
1997 |
} |
1998 |
|
1999 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
2000 |
break;
|
2001 |
case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
|
2002 |
if (len == 1) |
2003 |
return 10; |
2004 |
|
2005 |
framebuffer_update_request(vs, |
2006 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
2007 |
read_u16(data, 6), read_u16(data, 8)); |
2008 |
break;
|
2009 |
case VNC_MSG_CLIENT_KEY_EVENT:
|
2010 |
if (len == 1) |
2011 |
return 8; |
2012 |
|
2013 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
2014 |
break;
|
2015 |
case VNC_MSG_CLIENT_POINTER_EVENT:
|
2016 |
if (len == 1) |
2017 |
return 6; |
2018 |
|
2019 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
2020 |
break;
|
2021 |
case VNC_MSG_CLIENT_CUT_TEXT:
|
2022 |
if (len == 1) |
2023 |
return 8; |
2024 |
|
2025 |
if (len == 8) { |
2026 |
uint32_t dlen = read_u32(data, 4);
|
2027 |
if (dlen > 0) |
2028 |
return 8 + dlen; |
2029 |
} |
2030 |
|
2031 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
2032 |
break;
|
2033 |
case VNC_MSG_CLIENT_QEMU:
|
2034 |
if (len == 1) |
2035 |
return 2; |
2036 |
|
2037 |
switch (read_u8(data, 1)) { |
2038 |
case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
|
2039 |
if (len == 2) |
2040 |
return 12; |
2041 |
|
2042 |
ext_key_event(vs, read_u16(data, 2),
|
2043 |
read_u32(data, 4), read_u32(data, 8)); |
2044 |
break;
|
2045 |
case VNC_MSG_CLIENT_QEMU_AUDIO:
|
2046 |
if (len == 2) |
2047 |
return 4; |
2048 |
|
2049 |
switch (read_u16 (data, 2)) { |
2050 |
case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
|
2051 |
audio_add(vs); |
2052 |
break;
|
2053 |
case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
|
2054 |
audio_del(vs); |
2055 |
break;
|
2056 |
case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
|
2057 |
if (len == 4) |
2058 |
return 10; |
2059 |
switch (read_u8(data, 4)) { |
2060 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
2061 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
2062 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
2063 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
2064 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
2065 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
2066 |
default:
|
2067 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
2068 |
vnc_client_error(vs); |
2069 |
break;
|
2070 |
} |
2071 |
vs->as.nchannels = read_u8(data, 5);
|
2072 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
2073 |
printf("Invalid audio channel coount %d\n",
|
2074 |
read_u8(data, 5));
|
2075 |
vnc_client_error(vs); |
2076 |
break;
|
2077 |
} |
2078 |
vs->as.freq = read_u32(data, 6);
|
2079 |
break;
|
2080 |
default:
|
2081 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
2082 |
vnc_client_error(vs); |
2083 |
break;
|
2084 |
} |
2085 |
break;
|
2086 |
|
2087 |
default:
|
2088 |
printf("Msg: %d\n", read_u16(data, 0)); |
2089 |
vnc_client_error(vs); |
2090 |
break;
|
2091 |
} |
2092 |
break;
|
2093 |
default:
|
2094 |
printf("Msg: %d\n", data[0]); |
2095 |
vnc_client_error(vs); |
2096 |
break;
|
2097 |
} |
2098 |
|
2099 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2100 |
return 0; |
2101 |
} |
2102 |
|
2103 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
2104 |
{ |
2105 |
char buf[1024]; |
2106 |
VncShareMode mode; |
2107 |
int size;
|
2108 |
|
2109 |
mode = data[0] ? VNC_SHARE_MODE_SHARED : VNC_SHARE_MODE_EXCLUSIVE;
|
2110 |
switch (vs->vd->share_policy) {
|
2111 |
case VNC_SHARE_POLICY_IGNORE:
|
2112 |
/*
|
2113 |
* Ignore the shared flag. Nothing to do here.
|
2114 |
*
|
2115 |
* Doesn't conform to the rfb spec but is traditional qemu
|
2116 |
* behavior, thus left here as option for compatibility
|
2117 |
* reasons.
|
2118 |
*/
|
2119 |
break;
|
2120 |
case VNC_SHARE_POLICY_ALLOW_EXCLUSIVE:
|
2121 |
/*
|
2122 |
* Policy: Allow clients ask for exclusive access.
|
2123 |
*
|
2124 |
* Implementation: When a client asks for exclusive access,
|
2125 |
* disconnect all others. Shared connects are allowed as long
|
2126 |
* as no exclusive connection exists.
|
2127 |
*
|
2128 |
* This is how the rfb spec suggests to handle the shared flag.
|
2129 |
*/
|
2130 |
if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
2131 |
VncState *client; |
2132 |
QTAILQ_FOREACH(client, &vs->vd->clients, next) { |
2133 |
if (vs == client) {
|
2134 |
continue;
|
2135 |
} |
2136 |
if (client->share_mode != VNC_SHARE_MODE_EXCLUSIVE &&
|
2137 |
client->share_mode != VNC_SHARE_MODE_SHARED) { |
2138 |
continue;
|
2139 |
} |
2140 |
vnc_disconnect_start(client); |
2141 |
} |
2142 |
} |
2143 |
if (mode == VNC_SHARE_MODE_SHARED) {
|
2144 |
if (vs->vd->num_exclusive > 0) { |
2145 |
vnc_disconnect_start(vs); |
2146 |
return 0; |
2147 |
} |
2148 |
} |
2149 |
break;
|
2150 |
case VNC_SHARE_POLICY_FORCE_SHARED:
|
2151 |
/*
|
2152 |
* Policy: Shared connects only.
|
2153 |
* Implementation: Disallow clients asking for exclusive access.
|
2154 |
*
|
2155 |
* Useful for shared desktop sessions where you don't want
|
2156 |
* someone forgetting to say -shared when running the vnc
|
2157 |
* client disconnect everybody else.
|
2158 |
*/
|
2159 |
if (mode == VNC_SHARE_MODE_EXCLUSIVE) {
|
2160 |
vnc_disconnect_start(vs); |
2161 |
return 0; |
2162 |
} |
2163 |
break;
|
2164 |
} |
2165 |
vnc_set_share_mode(vs, mode); |
2166 |
|
2167 |
vs->client_width = ds_get_width(vs->ds); |
2168 |
vs->client_height = ds_get_height(vs->ds); |
2169 |
vnc_write_u16(vs, vs->client_width); |
2170 |
vnc_write_u16(vs, vs->client_height); |
2171 |
|
2172 |
pixel_format_message(vs); |
2173 |
|
2174 |
if (qemu_name)
|
2175 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
2176 |
else
|
2177 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
2178 |
|
2179 |
vnc_write_u32(vs, size); |
2180 |
vnc_write(vs, buf, size); |
2181 |
vnc_flush(vs); |
2182 |
|
2183 |
vnc_client_cache_auth(vs); |
2184 |
vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED); |
2185 |
|
2186 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2187 |
|
2188 |
return 0; |
2189 |
} |
2190 |
|
2191 |
void start_client_init(VncState *vs)
|
2192 |
{ |
2193 |
vnc_read_when(vs, protocol_client_init, 1);
|
2194 |
} |
2195 |
|
2196 |
static void make_challenge(VncState *vs) |
2197 |
{ |
2198 |
int i;
|
2199 |
|
2200 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
2201 |
|
2202 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
2203 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
2204 |
} |
2205 |
|
2206 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
2207 |
{ |
2208 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
2209 |
int i, j, pwlen;
|
2210 |
unsigned char key[8]; |
2211 |
time_t now = time(NULL);
|
2212 |
|
2213 |
if (!vs->vd->password) {
|
2214 |
VNC_DEBUG("No password configured on server");
|
2215 |
goto reject;
|
2216 |
} |
2217 |
if (vs->vd->expires < now) {
|
2218 |
VNC_DEBUG("Password is expired");
|
2219 |
goto reject;
|
2220 |
} |
2221 |
|
2222 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
2223 |
|
2224 |
/* Calculate the expected challenge response */
|
2225 |
pwlen = strlen(vs->vd->password); |
2226 |
for (i=0; i<sizeof(key); i++) |
2227 |
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
2228 |
deskey(key, EN0); |
2229 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
2230 |
des(response+j, response+j); |
2231 |
|
2232 |
/* Compare expected vs actual challenge response */
|
2233 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
2234 |
VNC_DEBUG("Client challenge response did not match\n");
|
2235 |
goto reject;
|
2236 |
} else {
|
2237 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
2238 |
vnc_write_u32(vs, 0); /* Accept auth */ |
2239 |
vnc_flush(vs); |
2240 |
|
2241 |
start_client_init(vs); |
2242 |
} |
2243 |
return 0; |
2244 |
|
2245 |
reject:
|
2246 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2247 |
if (vs->minor >= 8) { |
2248 |
static const char err[] = "Authentication failed"; |
2249 |
vnc_write_u32(vs, sizeof(err));
|
2250 |
vnc_write(vs, err, sizeof(err));
|
2251 |
} |
2252 |
vnc_flush(vs); |
2253 |
vnc_client_error(vs); |
2254 |
return 0; |
2255 |
} |
2256 |
|
2257 |
void start_auth_vnc(VncState *vs)
|
2258 |
{ |
2259 |
make_challenge(vs); |
2260 |
/* Send client a 'random' challenge */
|
2261 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
2262 |
vnc_flush(vs); |
2263 |
|
2264 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
2265 |
} |
2266 |
|
2267 |
|
2268 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
2269 |
{ |
2270 |
/* We only advertise 1 auth scheme at a time, so client
|
2271 |
* must pick the one we sent. Verify this */
|
2272 |
if (data[0] != vs->auth) { /* Reject auth */ |
2273 |
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
2274 |
vnc_write_u32(vs, 1);
|
2275 |
if (vs->minor >= 8) { |
2276 |
static const char err[] = "Authentication failed"; |
2277 |
vnc_write_u32(vs, sizeof(err));
|
2278 |
vnc_write(vs, err, sizeof(err));
|
2279 |
} |
2280 |
vnc_client_error(vs); |
2281 |
} else { /* Accept requested auth */ |
2282 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
2283 |
switch (vs->auth) {
|
2284 |
case VNC_AUTH_NONE:
|
2285 |
VNC_DEBUG("Accept auth none\n");
|
2286 |
if (vs->minor >= 8) { |
2287 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
2288 |
vnc_flush(vs); |
2289 |
} |
2290 |
start_client_init(vs); |
2291 |
break;
|
2292 |
|
2293 |
case VNC_AUTH_VNC:
|
2294 |
VNC_DEBUG("Start VNC auth\n");
|
2295 |
start_auth_vnc(vs); |
2296 |
break;
|
2297 |
|
2298 |
#ifdef CONFIG_VNC_TLS
|
2299 |
case VNC_AUTH_VENCRYPT:
|
2300 |
VNC_DEBUG("Accept VeNCrypt auth\n");
|
2301 |
start_auth_vencrypt(vs); |
2302 |
break;
|
2303 |
#endif /* CONFIG_VNC_TLS */ |
2304 |
|
2305 |
#ifdef CONFIG_VNC_SASL
|
2306 |
case VNC_AUTH_SASL:
|
2307 |
VNC_DEBUG("Accept SASL auth\n");
|
2308 |
start_auth_sasl(vs); |
2309 |
break;
|
2310 |
#endif /* CONFIG_VNC_SASL */ |
2311 |
|
2312 |
default: /* Should not be possible, but just in case */ |
2313 |
VNC_DEBUG("Reject auth %d server code bug\n", vs->auth);
|
2314 |
vnc_write_u8(vs, 1);
|
2315 |
if (vs->minor >= 8) { |
2316 |
static const char err[] = "Authentication failed"; |
2317 |
vnc_write_u32(vs, sizeof(err));
|
2318 |
vnc_write(vs, err, sizeof(err));
|
2319 |
} |
2320 |
vnc_client_error(vs); |
2321 |
} |
2322 |
} |
2323 |
return 0; |
2324 |
} |
2325 |
|
2326 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
2327 |
{ |
2328 |
char local[13]; |
2329 |
|
2330 |
memcpy(local, version, 12);
|
2331 |
local[12] = 0; |
2332 |
|
2333 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
2334 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
2335 |
vnc_client_error(vs); |
2336 |
return 0; |
2337 |
} |
2338 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
2339 |
if (vs->major != 3 || |
2340 |
(vs->minor != 3 &&
|
2341 |
vs->minor != 4 &&
|
2342 |
vs->minor != 5 &&
|
2343 |
vs->minor != 7 &&
|
2344 |
vs->minor != 8)) {
|
2345 |
VNC_DEBUG("Unsupported client version\n");
|
2346 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2347 |
vnc_flush(vs); |
2348 |
vnc_client_error(vs); |
2349 |
return 0; |
2350 |
} |
2351 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
2352 |
* as equivalent to v3.3 by servers
|
2353 |
*/
|
2354 |
if (vs->minor == 4 || vs->minor == 5) |
2355 |
vs->minor = 3;
|
2356 |
|
2357 |
if (vs->minor == 3) { |
2358 |
if (vs->auth == VNC_AUTH_NONE) {
|
2359 |
VNC_DEBUG("Tell client auth none\n");
|
2360 |
vnc_write_u32(vs, vs->auth); |
2361 |
vnc_flush(vs); |
2362 |
start_client_init(vs); |
2363 |
} else if (vs->auth == VNC_AUTH_VNC) { |
2364 |
VNC_DEBUG("Tell client VNC auth\n");
|
2365 |
vnc_write_u32(vs, vs->auth); |
2366 |
vnc_flush(vs); |
2367 |
start_auth_vnc(vs); |
2368 |
} else {
|
2369 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
|
2370 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2371 |
vnc_flush(vs); |
2372 |
vnc_client_error(vs); |
2373 |
} |
2374 |
} else {
|
2375 |
VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
|
2376 |
vnc_write_u8(vs, 1); /* num auth */ |
2377 |
vnc_write_u8(vs, vs->auth); |
2378 |
vnc_read_when(vs, protocol_client_auth, 1);
|
2379 |
vnc_flush(vs); |
2380 |
} |
2381 |
|
2382 |
return 0; |
2383 |
} |
2384 |
|
2385 |
static VncRectStat *vnc_stat_rect(VncDisplay *vd, int x, int y) |
2386 |
{ |
2387 |
struct VncSurface *vs = &vd->guest;
|
2388 |
|
2389 |
return &vs->stats[y / VNC_STAT_RECT][x / VNC_STAT_RECT];
|
2390 |
} |
2391 |
|
2392 |
void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h) |
2393 |
{ |
2394 |
int i, j;
|
2395 |
|
2396 |
w = (x + w) / VNC_STAT_RECT; |
2397 |
h = (y + h) / VNC_STAT_RECT; |
2398 |
x /= VNC_STAT_RECT; |
2399 |
y /= VNC_STAT_RECT; |
2400 |
|
2401 |
for (j = y; j <= h; j++) {
|
2402 |
for (i = x; i <= w; i++) {
|
2403 |
vs->lossy_rect[j][i] = 1;
|
2404 |
} |
2405 |
} |
2406 |
} |
2407 |
|
2408 |
static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y) |
2409 |
{ |
2410 |
VncState *vs; |
2411 |
int sty = y / VNC_STAT_RECT;
|
2412 |
int stx = x / VNC_STAT_RECT;
|
2413 |
int has_dirty = 0; |
2414 |
|
2415 |
y = y / VNC_STAT_RECT * VNC_STAT_RECT; |
2416 |
x = x / VNC_STAT_RECT * VNC_STAT_RECT; |
2417 |
|
2418 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
2419 |
int j;
|
2420 |
|
2421 |
/* kernel send buffers are full -> refresh later */
|
2422 |
if (vs->output.offset) {
|
2423 |
continue;
|
2424 |
} |
2425 |
|
2426 |
if (!vs->lossy_rect[sty][stx]) {
|
2427 |
continue;
|
2428 |
} |
2429 |
|
2430 |
vs->lossy_rect[sty][stx] = 0;
|
2431 |
for (j = 0; j < VNC_STAT_RECT; ++j) { |
2432 |
bitmap_set(vs->dirty[y + j], x / 16, VNC_STAT_RECT / 16); |
2433 |
} |
2434 |
has_dirty++; |
2435 |
} |
2436 |
|
2437 |
return has_dirty;
|
2438 |
} |
2439 |
|
2440 |
static int vnc_update_stats(VncDisplay *vd, struct timeval * tv) |
2441 |
{ |
2442 |
int width = pixman_image_get_width(vd->guest.fb);
|
2443 |
int height = pixman_image_get_height(vd->guest.fb);
|
2444 |
int x, y;
|
2445 |
struct timeval res;
|
2446 |
int has_dirty = 0; |
2447 |
|
2448 |
for (y = 0; y < height; y += VNC_STAT_RECT) { |
2449 |
for (x = 0; x < width; x += VNC_STAT_RECT) { |
2450 |
VncRectStat *rect = vnc_stat_rect(vd, x, y); |
2451 |
|
2452 |
rect->updated = false;
|
2453 |
} |
2454 |
} |
2455 |
|
2456 |
qemu_timersub(tv, &VNC_REFRESH_STATS, &res); |
2457 |
|
2458 |
if (timercmp(&vd->guest.last_freq_check, &res, >)) {
|
2459 |
return has_dirty;
|
2460 |
} |
2461 |
vd->guest.last_freq_check = *tv; |
2462 |
|
2463 |
for (y = 0; y < height; y += VNC_STAT_RECT) { |
2464 |
for (x = 0; x < width; x += VNC_STAT_RECT) { |
2465 |
VncRectStat *rect= vnc_stat_rect(vd, x, y); |
2466 |
int count = ARRAY_SIZE(rect->times);
|
2467 |
struct timeval min, max;
|
2468 |
|
2469 |
if (!timerisset(&rect->times[count - 1])) { |
2470 |
continue ;
|
2471 |
} |
2472 |
|
2473 |
max = rect->times[(rect->idx + count - 1) % count];
|
2474 |
qemu_timersub(tv, &max, &res); |
2475 |
|
2476 |
if (timercmp(&res, &VNC_REFRESH_LOSSY, >)) {
|
2477 |
rect->freq = 0;
|
2478 |
has_dirty += vnc_refresh_lossy_rect(vd, x, y); |
2479 |
memset(rect->times, 0, sizeof (rect->times)); |
2480 |
continue ;
|
2481 |
} |
2482 |
|
2483 |
min = rect->times[rect->idx]; |
2484 |
max = rect->times[(rect->idx + count - 1) % count];
|
2485 |
qemu_timersub(&max, &min, &res); |
2486 |
|
2487 |
rect->freq = res.tv_sec + res.tv_usec / 1000000.; |
2488 |
rect->freq /= count; |
2489 |
rect->freq = 1. / rect->freq;
|
2490 |
} |
2491 |
} |
2492 |
return has_dirty;
|
2493 |
} |
2494 |
|
2495 |
double vnc_update_freq(VncState *vs, int x, int y, int w, int h) |
2496 |
{ |
2497 |
int i, j;
|
2498 |
double total = 0; |
2499 |
int num = 0; |
2500 |
|
2501 |
x = (x / VNC_STAT_RECT) * VNC_STAT_RECT; |
2502 |
y = (y / VNC_STAT_RECT) * VNC_STAT_RECT; |
2503 |
|
2504 |
for (j = y; j <= y + h; j += VNC_STAT_RECT) {
|
2505 |
for (i = x; i <= x + w; i += VNC_STAT_RECT) {
|
2506 |
total += vnc_stat_rect(vs->vd, i, j)->freq; |
2507 |
num++; |
2508 |
} |
2509 |
} |
2510 |
|
2511 |
if (num) {
|
2512 |
return total / num;
|
2513 |
} else {
|
2514 |
return 0; |
2515 |
} |
2516 |
} |
2517 |
|
2518 |
static void vnc_rect_updated(VncDisplay *vd, int x, int y, struct timeval * tv) |
2519 |
{ |
2520 |
VncRectStat *rect; |
2521 |
|
2522 |
rect = vnc_stat_rect(vd, x, y); |
2523 |
if (rect->updated) {
|
2524 |
return ;
|
2525 |
} |
2526 |
rect->times[rect->idx] = *tv; |
2527 |
rect->idx = (rect->idx + 1) % ARRAY_SIZE(rect->times);
|
2528 |
rect->updated = true;
|
2529 |
} |
2530 |
|
2531 |
static int vnc_refresh_server_surface(VncDisplay *vd) |
2532 |
{ |
2533 |
int width = pixman_image_get_width(vd->guest.fb);
|
2534 |
int height = pixman_image_get_height(vd->guest.fb);
|
2535 |
int y;
|
2536 |
uint8_t *guest_row; |
2537 |
uint8_t *server_row; |
2538 |
int cmp_bytes;
|
2539 |
VncState *vs; |
2540 |
int has_dirty = 0; |
2541 |
pixman_image_t *tmpbuf = NULL;
|
2542 |
|
2543 |
struct timeval tv = { 0, 0 }; |
2544 |
|
2545 |
if (!vd->non_adaptive) {
|
2546 |
gettimeofday(&tv, NULL);
|
2547 |
has_dirty = vnc_update_stats(vd, &tv); |
2548 |
} |
2549 |
|
2550 |
/*
|
2551 |
* Walk through the guest dirty map.
|
2552 |
* Check and copy modified bits from guest to server surface.
|
2553 |
* Update server dirty map.
|
2554 |
*/
|
2555 |
cmp_bytes = 64;
|
2556 |
if (cmp_bytes > vnc_server_fb_stride(vd)) {
|
2557 |
cmp_bytes = vnc_server_fb_stride(vd); |
2558 |
} |
2559 |
if (vd->guest.format != VNC_SERVER_FB_FORMAT) {
|
2560 |
int width = pixman_image_get_width(vd->server);
|
2561 |
tmpbuf = qemu_pixman_linebuf_create(VNC_SERVER_FB_FORMAT, width); |
2562 |
} |
2563 |
guest_row = (uint8_t *)pixman_image_get_data(vd->guest.fb); |
2564 |
server_row = (uint8_t *)pixman_image_get_data(vd->server); |
2565 |
for (y = 0; y < height; y++) { |
2566 |
if (!bitmap_empty(vd->guest.dirty[y], VNC_DIRTY_BITS)) {
|
2567 |
int x;
|
2568 |
uint8_t *guest_ptr; |
2569 |
uint8_t *server_ptr; |
2570 |
|
2571 |
if (vd->guest.format != VNC_SERVER_FB_FORMAT) {
|
2572 |
qemu_pixman_linebuf_fill(tmpbuf, vd->guest.fb, width, 0, y);
|
2573 |
guest_ptr = (uint8_t *)pixman_image_get_data(tmpbuf); |
2574 |
} else {
|
2575 |
guest_ptr = guest_row; |
2576 |
} |
2577 |
server_ptr = server_row; |
2578 |
|
2579 |
for (x = 0; x + 15 < width; |
2580 |
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
2581 |
if (!test_and_clear_bit((x / 16), vd->guest.dirty[y])) |
2582 |
continue;
|
2583 |
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
2584 |
continue;
|
2585 |
memcpy(server_ptr, guest_ptr, cmp_bytes); |
2586 |
if (!vd->non_adaptive)
|
2587 |
vnc_rect_updated(vd, x, y, &tv); |
2588 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
2589 |
set_bit((x / 16), vs->dirty[y]);
|
2590 |
} |
2591 |
has_dirty++; |
2592 |
} |
2593 |
} |
2594 |
guest_row += pixman_image_get_stride(vd->guest.fb); |
2595 |
server_row += pixman_image_get_stride(vd->server); |
2596 |
} |
2597 |
qemu_pixman_image_unref(tmpbuf); |
2598 |
return has_dirty;
|
2599 |
} |
2600 |
|
2601 |
static void vnc_refresh(void *opaque) |
2602 |
{ |
2603 |
VncDisplay *vd = opaque; |
2604 |
VncState *vs, *vn; |
2605 |
int has_dirty, rects = 0; |
2606 |
|
2607 |
vga_hw_update(); |
2608 |
|
2609 |
if (vnc_trylock_display(vd)) {
|
2610 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2611 |
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + |
2612 |
vd->timer_interval); |
2613 |
return;
|
2614 |
} |
2615 |
|
2616 |
has_dirty = vnc_refresh_server_surface(vd); |
2617 |
vnc_unlock_display(vd); |
2618 |
|
2619 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
2620 |
rects += vnc_update_client(vs, has_dirty); |
2621 |
/* vs might be free()ed here */
|
2622 |
} |
2623 |
|
2624 |
/* vd->timer could be NULL now if the last client disconnected,
|
2625 |
* in this case don't update the timer */
|
2626 |
if (vd->timer == NULL) |
2627 |
return;
|
2628 |
|
2629 |
if (has_dirty && rects) {
|
2630 |
vd->timer_interval /= 2;
|
2631 |
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
2632 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2633 |
} else {
|
2634 |
vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
2635 |
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
2636 |
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
2637 |
} |
2638 |
qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval); |
2639 |
} |
2640 |
|
2641 |
static void vnc_init_timer(VncDisplay *vd) |
2642 |
{ |
2643 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2644 |
if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) { |
2645 |
vd->timer = qemu_new_timer_ms(rt_clock, vnc_refresh, vd); |
2646 |
vnc_dpy_resize(vd->ds); |
2647 |
vnc_refresh(vd); |
2648 |
} |
2649 |
} |
2650 |
|
2651 |
static void vnc_remove_timer(VncDisplay *vd) |
2652 |
{ |
2653 |
if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) { |
2654 |
qemu_del_timer(vd->timer); |
2655 |
qemu_free_timer(vd->timer); |
2656 |
vd->timer = NULL;
|
2657 |
} |
2658 |
} |
2659 |
|
2660 |
static void vnc_connect(VncDisplay *vd, int csock, int skipauth) |
2661 |
{ |
2662 |
VncState *vs = g_malloc0(sizeof(VncState));
|
2663 |
int i;
|
2664 |
|
2665 |
vs->csock = csock; |
2666 |
|
2667 |
if (skipauth) {
|
2668 |
vs->auth = VNC_AUTH_NONE; |
2669 |
#ifdef CONFIG_VNC_TLS
|
2670 |
vs->subauth = VNC_AUTH_INVALID; |
2671 |
#endif
|
2672 |
} else {
|
2673 |
vs->auth = vd->auth; |
2674 |
#ifdef CONFIG_VNC_TLS
|
2675 |
vs->subauth = vd->subauth; |
2676 |
#endif
|
2677 |
} |
2678 |
|
2679 |
vs->lossy_rect = g_malloc0(VNC_STAT_ROWS * sizeof (*vs->lossy_rect));
|
2680 |
for (i = 0; i < VNC_STAT_ROWS; ++i) { |
2681 |
vs->lossy_rect[i] = g_malloc0(VNC_STAT_COLS * sizeof (uint8_t));
|
2682 |
} |
2683 |
|
2684 |
VNC_DEBUG("New client on socket %d\n", csock);
|
2685 |
dcl->idle = 0;
|
2686 |
socket_set_nonblock(vs->csock); |
2687 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
2688 |
|
2689 |
vnc_client_cache_addr(vs); |
2690 |
vnc_qmp_event(vs, QEVENT_VNC_CONNECTED); |
2691 |
vnc_set_share_mode(vs, VNC_SHARE_MODE_CONNECTING); |
2692 |
|
2693 |
vs->vd = vd; |
2694 |
vs->ds = vd->ds; |
2695 |
vs->last_x = -1;
|
2696 |
vs->last_y = -1;
|
2697 |
|
2698 |
vs->as.freq = 44100;
|
2699 |
vs->as.nchannels = 2;
|
2700 |
vs->as.fmt = AUD_FMT_S16; |
2701 |
vs->as.endianness = 0;
|
2702 |
|
2703 |
qemu_mutex_init(&vs->output_mutex); |
2704 |
vs->bh = qemu_bh_new(vnc_jobs_bh, vs); |
2705 |
|
2706 |
QTAILQ_INSERT_HEAD(&vd->clients, vs, next); |
2707 |
|
2708 |
vga_hw_update(); |
2709 |
|
2710 |
vnc_write(vs, "RFB 003.008\n", 12); |
2711 |
vnc_flush(vs); |
2712 |
vnc_read_when(vs, protocol_version, 12);
|
2713 |
reset_keys(vs); |
2714 |
if (vs->vd->lock_key_sync)
|
2715 |
vs->led = qemu_add_led_event_handler(kbd_leds, vs); |
2716 |
|
2717 |
vs->mouse_mode_notifier.notify = check_pointer_type_change; |
2718 |
qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
2719 |
|
2720 |
vnc_init_timer(vd); |
2721 |
|
2722 |
/* vs might be free()ed here */
|
2723 |
} |
2724 |
|
2725 |
static void vnc_listen_read(void *opaque) |
2726 |
{ |
2727 |
VncDisplay *vs = opaque; |
2728 |
struct sockaddr_in addr;
|
2729 |
socklen_t addrlen = sizeof(addr);
|
2730 |
|
2731 |
/* Catch-up */
|
2732 |
vga_hw_update(); |
2733 |
|
2734 |
int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
2735 |
if (csock != -1) { |
2736 |
vnc_connect(vs, csock, 0);
|
2737 |
} |
2738 |
} |
2739 |
|
2740 |
void vnc_display_init(DisplayState *ds)
|
2741 |
{ |
2742 |
VncDisplay *vs = g_malloc0(sizeof(*vs));
|
2743 |
|
2744 |
dcl = g_malloc0(sizeof(DisplayChangeListener));
|
2745 |
|
2746 |
ds->opaque = vs; |
2747 |
dcl->idle = 1;
|
2748 |
vnc_display = vs; |
2749 |
|
2750 |
vs->lsock = -1;
|
2751 |
|
2752 |
vs->ds = ds; |
2753 |
QTAILQ_INIT(&vs->clients); |
2754 |
vs->expires = TIME_MAX; |
2755 |
|
2756 |
if (keyboard_layout)
|
2757 |
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
2758 |
else
|
2759 |
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
2760 |
|
2761 |
if (!vs->kbd_layout)
|
2762 |
exit(1);
|
2763 |
|
2764 |
qemu_mutex_init(&vs->mutex); |
2765 |
vnc_start_worker_thread(); |
2766 |
|
2767 |
dcl->dpy_gfx_copy = vnc_dpy_copy; |
2768 |
dcl->dpy_gfx_update = vnc_dpy_update; |
2769 |
dcl->dpy_gfx_resize = vnc_dpy_resize; |
2770 |
dcl->dpy_gfx_setdata = vnc_dpy_setdata; |
2771 |
dcl->dpy_mouse_set = vnc_mouse_set; |
2772 |
dcl->dpy_cursor_define = vnc_dpy_cursor_define; |
2773 |
register_displaychangelistener(ds, dcl); |
2774 |
} |
2775 |
|
2776 |
|
2777 |
static void vnc_display_close(DisplayState *ds) |
2778 |
{ |
2779 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2780 |
|
2781 |
if (!vs)
|
2782 |
return;
|
2783 |
if (vs->display) {
|
2784 |
g_free(vs->display); |
2785 |
vs->display = NULL;
|
2786 |
} |
2787 |
if (vs->lsock != -1) { |
2788 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
2789 |
close(vs->lsock); |
2790 |
vs->lsock = -1;
|
2791 |
} |
2792 |
vs->auth = VNC_AUTH_INVALID; |
2793 |
#ifdef CONFIG_VNC_TLS
|
2794 |
vs->subauth = VNC_AUTH_INVALID; |
2795 |
vs->tls.x509verify = 0;
|
2796 |
#endif
|
2797 |
} |
2798 |
|
2799 |
static int vnc_display_disable_login(DisplayState *ds) |
2800 |
{ |
2801 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2802 |
|
2803 |
if (!vs) {
|
2804 |
return -1; |
2805 |
} |
2806 |
|
2807 |
if (vs->password) {
|
2808 |
g_free(vs->password); |
2809 |
} |
2810 |
|
2811 |
vs->password = NULL;
|
2812 |
if (vs->auth == VNC_AUTH_NONE) {
|
2813 |
vs->auth = VNC_AUTH_VNC; |
2814 |
} |
2815 |
|
2816 |
return 0; |
2817 |
} |
2818 |
|
2819 |
int vnc_display_password(DisplayState *ds, const char *password) |
2820 |
{ |
2821 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2822 |
|
2823 |
if (!vs) {
|
2824 |
return -EINVAL;
|
2825 |
} |
2826 |
|
2827 |
if (!password) {
|
2828 |
/* This is not the intention of this interface but err on the side
|
2829 |
of being safe */
|
2830 |
return vnc_display_disable_login(ds);
|
2831 |
} |
2832 |
|
2833 |
if (vs->password) {
|
2834 |
g_free(vs->password); |
2835 |
vs->password = NULL;
|
2836 |
} |
2837 |
vs->password = g_strdup(password); |
2838 |
if (vs->auth == VNC_AUTH_NONE) {
|
2839 |
vs->auth = VNC_AUTH_VNC; |
2840 |
} |
2841 |
|
2842 |
return 0; |
2843 |
} |
2844 |
|
2845 |
int vnc_display_pw_expire(DisplayState *ds, time_t expires)
|
2846 |
{ |
2847 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2848 |
|
2849 |
if (!vs) {
|
2850 |
return -EINVAL;
|
2851 |
} |
2852 |
|
2853 |
vs->expires = expires; |
2854 |
return 0; |
2855 |
} |
2856 |
|
2857 |
char *vnc_display_local_addr(DisplayState *ds)
|
2858 |
{ |
2859 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2860 |
|
2861 |
return vnc_socket_local_addr("%s:%s", vs->lsock); |
2862 |
} |
2863 |
|
2864 |
void vnc_display_open(DisplayState *ds, const char *display, Error **errp) |
2865 |
{ |
2866 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2867 |
const char *options; |
2868 |
int password = 0; |
2869 |
int reverse = 0; |
2870 |
#ifdef CONFIG_VNC_TLS
|
2871 |
int tls = 0, x509 = 0; |
2872 |
#endif
|
2873 |
#ifdef CONFIG_VNC_SASL
|
2874 |
int sasl = 0; |
2875 |
int saslErr;
|
2876 |
#endif
|
2877 |
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
2878 |
int acl = 0; |
2879 |
#endif
|
2880 |
int lock_key_sync = 1; |
2881 |
|
2882 |
if (!vnc_display) {
|
2883 |
error_setg(errp, "VNC display not active");
|
2884 |
return;
|
2885 |
} |
2886 |
vnc_display_close(ds); |
2887 |
if (strcmp(display, "none") == 0) |
2888 |
return;
|
2889 |
|
2890 |
vs->display = g_strdup(display); |
2891 |
vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE; |
2892 |
|
2893 |
options = display; |
2894 |
while ((options = strchr(options, ','))) { |
2895 |
options++; |
2896 |
if (strncmp(options, "password", 8) == 0) { |
2897 |
if (fips_get_state()) {
|
2898 |
error_setg(errp, |
2899 |
"VNC password auth disabled due to FIPS mode, "
|
2900 |
"consider using the VeNCrypt or SASL authentication "
|
2901 |
"methods as an alternative");
|
2902 |
goto fail;
|
2903 |
} |
2904 |
password = 1; /* Require password auth */ |
2905 |
} else if (strncmp(options, "reverse", 7) == 0) { |
2906 |
reverse = 1;
|
2907 |
} else if (strncmp(options, "no-lock-key-sync", 16) == 0) { |
2908 |
lock_key_sync = 0;
|
2909 |
#ifdef CONFIG_VNC_SASL
|
2910 |
} else if (strncmp(options, "sasl", 4) == 0) { |
2911 |
sasl = 1; /* Require SASL auth */ |
2912 |
#endif
|
2913 |
#ifdef CONFIG_VNC_TLS
|
2914 |
} else if (strncmp(options, "tls", 3) == 0) { |
2915 |
tls = 1; /* Require TLS */ |
2916 |
} else if (strncmp(options, "x509", 4) == 0) { |
2917 |
char *start, *end;
|
2918 |
x509 = 1; /* Require x509 certificates */ |
2919 |
if (strncmp(options, "x509verify", 10) == 0) |
2920 |
vs->tls.x509verify = 1; /* ...and verify client certs */ |
2921 |
|
2922 |
/* Now check for 'x509=/some/path' postfix
|
2923 |
* and use that to setup x509 certificate/key paths */
|
2924 |
start = strchr(options, '=');
|
2925 |
end = strchr(options, ',');
|
2926 |
if (start && (!end || (start < end))) {
|
2927 |
int len = end ? end-(start+1) : strlen(start+1); |
2928 |
char *path = g_strndup(start + 1, len); |
2929 |
|
2930 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
2931 |
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
2932 |
error_setg(errp, "Failed to find x509 certificates/keys in %s", path);
|
2933 |
g_free(path); |
2934 |
goto fail;
|
2935 |
} |
2936 |
g_free(path); |
2937 |
} else {
|
2938 |
error_setg(errp, "No certificate path provided");
|
2939 |
goto fail;
|
2940 |
} |
2941 |
#endif
|
2942 |
#if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL)
|
2943 |
} else if (strncmp(options, "acl", 3) == 0) { |
2944 |
acl = 1;
|
2945 |
#endif
|
2946 |
} else if (strncmp(options, "lossy", 5) == 0) { |
2947 |
vs->lossy = true;
|
2948 |
} else if (strncmp(options, "non-adaptive", 12) == 0) { |
2949 |
vs->non_adaptive = true;
|
2950 |
} else if (strncmp(options, "share=", 6) == 0) { |
2951 |
if (strncmp(options+6, "ignore", 6) == 0) { |
2952 |
vs->share_policy = VNC_SHARE_POLICY_IGNORE; |
2953 |
} else if (strncmp(options+6, "allow-exclusive", 15) == 0) { |
2954 |
vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE; |
2955 |
} else if (strncmp(options+6, "force-shared", 12) == 0) { |
2956 |
vs->share_policy = VNC_SHARE_POLICY_FORCE_SHARED; |
2957 |
} else {
|
2958 |
error_setg(errp, "unknown vnc share= option");
|
2959 |
goto fail;
|
2960 |
} |
2961 |
} |
2962 |
} |
2963 |
|
2964 |
#ifdef CONFIG_VNC_TLS
|
2965 |
if (acl && x509 && vs->tls.x509verify) {
|
2966 |
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
2967 |
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
2968 |
exit(1);
|
2969 |
} |
2970 |
} |
2971 |
#endif
|
2972 |
#ifdef CONFIG_VNC_SASL
|
2973 |
if (acl && sasl) {
|
2974 |
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
2975 |
fprintf(stderr, "Failed to create username ACL\n");
|
2976 |
exit(1);
|
2977 |
} |
2978 |
} |
2979 |
#endif
|
2980 |
|
2981 |
/*
|
2982 |
* Combinations we support here:
|
2983 |
*
|
2984 |
* - no-auth (clear text, no auth)
|
2985 |
* - password (clear text, weak auth)
|
2986 |
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
2987 |
* - tls (encrypt, weak anonymous creds, no auth)
|
2988 |
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
2989 |
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
2990 |
* - tls + x509 (encrypt, good x509 creds, no auth)
|
2991 |
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
2992 |
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
2993 |
*
|
2994 |
* NB1. TLS is a stackable auth scheme.
|
2995 |
* NB2. the x509 schemes have option to validate a client cert dname
|
2996 |
*/
|
2997 |
if (password) {
|
2998 |
#ifdef CONFIG_VNC_TLS
|
2999 |
if (tls) {
|
3000 |
vs->auth = VNC_AUTH_VENCRYPT; |
3001 |
if (x509) {
|
3002 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
3003 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
3004 |
} else {
|
3005 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
3006 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
3007 |
} |
3008 |
} else {
|
3009 |
#endif /* CONFIG_VNC_TLS */ |
3010 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
3011 |
vs->auth = VNC_AUTH_VNC; |
3012 |
#ifdef CONFIG_VNC_TLS
|
3013 |
vs->subauth = VNC_AUTH_INVALID; |
3014 |
} |
3015 |
#endif /* CONFIG_VNC_TLS */ |
3016 |
#ifdef CONFIG_VNC_SASL
|
3017 |
} else if (sasl) { |
3018 |
#ifdef CONFIG_VNC_TLS
|
3019 |
if (tls) {
|
3020 |
vs->auth = VNC_AUTH_VENCRYPT; |
3021 |
if (x509) {
|
3022 |
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
3023 |
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
3024 |
} else {
|
3025 |
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
3026 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
3027 |
} |
3028 |
} else {
|
3029 |
#endif /* CONFIG_VNC_TLS */ |
3030 |
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
3031 |
vs->auth = VNC_AUTH_SASL; |
3032 |
#ifdef CONFIG_VNC_TLS
|
3033 |
vs->subauth = VNC_AUTH_INVALID; |
3034 |
} |
3035 |
#endif /* CONFIG_VNC_TLS */ |
3036 |
#endif /* CONFIG_VNC_SASL */ |
3037 |
} else {
|
3038 |
#ifdef CONFIG_VNC_TLS
|
3039 |
if (tls) {
|
3040 |
vs->auth = VNC_AUTH_VENCRYPT; |
3041 |
if (x509) {
|
3042 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
3043 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
3044 |
} else {
|
3045 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
3046 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
3047 |
} |
3048 |
} else {
|
3049 |
#endif
|
3050 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
3051 |
vs->auth = VNC_AUTH_NONE; |
3052 |
#ifdef CONFIG_VNC_TLS
|
3053 |
vs->subauth = VNC_AUTH_INVALID; |
3054 |
} |
3055 |
#endif
|
3056 |
} |
3057 |
|
3058 |
#ifdef CONFIG_VNC_SASL
|
3059 |
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
3060 |
error_setg(errp, "Failed to initialize SASL auth: %s",
|
3061 |
sasl_errstring(saslErr, NULL, NULL)); |
3062 |
goto fail;
|
3063 |
} |
3064 |
#endif
|
3065 |
vs->lock_key_sync = lock_key_sync; |
3066 |
|
3067 |
if (reverse) {
|
3068 |
/* connect to viewer */
|
3069 |
int csock;
|
3070 |
vs->lsock = -1;
|
3071 |
if (strncmp(display, "unix:", 5) == 0) { |
3072 |
csock = unix_connect(display+5, errp);
|
3073 |
} else {
|
3074 |
csock = inet_connect(display, errp); |
3075 |
} |
3076 |
if (csock < 0) { |
3077 |
goto fail;
|
3078 |
} |
3079 |
vnc_connect(vs, csock, 0);
|
3080 |
} else {
|
3081 |
/* listen for connects */
|
3082 |
char *dpy;
|
3083 |
dpy = g_malloc(256);
|
3084 |
if (strncmp(display, "unix:", 5) == 0) { |
3085 |
pstrcpy(dpy, 256, "unix:"); |
3086 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5, errp); |
3087 |
} else {
|
3088 |
vs->lsock = inet_listen(display, dpy, 256,
|
3089 |
SOCK_STREAM, 5900, errp);
|
3090 |
} |
3091 |
if (vs->lsock < 0) { |
3092 |
g_free(dpy); |
3093 |
goto fail;
|
3094 |
} |
3095 |
g_free(vs->display); |
3096 |
vs->display = dpy; |
3097 |
qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
3098 |
} |
3099 |
return;
|
3100 |
|
3101 |
fail:
|
3102 |
g_free(vs->display); |
3103 |
vs->display = NULL;
|
3104 |
} |
3105 |
|
3106 |
void vnc_display_add_client(DisplayState *ds, int csock, int skipauth) |
3107 |
{ |
3108 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
3109 |
|
3110 |
vnc_connect(vs, csock, skipauth); |
3111 |
} |