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/*
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* QEMU VNC display driver
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*
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* Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
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* Copyright (C) 2006 Fabrice Bellard
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* Copyright (C) 2009 Red Hat, Inc
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vnc.h" |
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#include "sysemu.h" |
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#include "qemu_socket.h" |
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#include "qemu-timer.h" |
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#include "acl.h" |
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#include "qemu-objects.h" |
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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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#include "vnc_keysym.h" |
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#include "d3des.h" |
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|
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#define count_bits(c, v) { \
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for (c = 0; v; v >>= 1) \ |
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{ \ |
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c += v & 1; \
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} \ |
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} |
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static VncDisplay *vnc_display; /* needed for info vnc */ |
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static DisplayChangeListener *dcl;
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static int vnc_cursor_define(VncState *vs); |
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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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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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/* Enough for the existing format + the 2 vars we're
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* substituting in. */
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addrlen = strlen(format) + strlen(host) + strlen(serv); |
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addr = qemu_malloc(addrlen + 1);
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snprintf(addr, addrlen, format, host, serv); |
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addr[addrlen] = '\0';
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return addr;
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} |
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char *vnc_socket_local_addr(const char *format, int fd) { |
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struct sockaddr_storage sa;
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socklen_t salen; |
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salen = sizeof(sa);
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if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) |
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return NULL; |
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return addr_to_string(format, &sa, salen);
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} |
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char *vnc_socket_remote_addr(const char *format, int fd) { |
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struct sockaddr_storage sa;
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socklen_t salen; |
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salen = sizeof(sa);
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if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) |
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return NULL; |
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return addr_to_string(format, &sa, salen);
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} |
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static 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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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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} |
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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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} |
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return put_addr_qdict(qdict, &sa, salen);
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} |
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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"; |
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case VNC_AUTH_ULTRA:
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return "ultra"; |
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case VNC_AUTH_TLS:
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return "tls"; |
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case VNC_AUTH_VENCRYPT:
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#ifdef CONFIG_VNC_TLS
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switch (vd->subauth) {
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case VNC_AUTH_VENCRYPT_PLAIN:
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return "vencrypt+plain"; |
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case VNC_AUTH_VENCRYPT_TLSNONE:
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return "vencrypt+tls+none"; |
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case VNC_AUTH_VENCRYPT_TLSVNC:
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return "vencrypt+tls+vnc"; |
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case VNC_AUTH_VENCRYPT_TLSPLAIN:
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return "vencrypt+tls+plain"; |
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case VNC_AUTH_VENCRYPT_X509NONE:
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return "vencrypt+x509+none"; |
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case VNC_AUTH_VENCRYPT_X509VNC:
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return "vencrypt+x509+vnc"; |
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case VNC_AUTH_VENCRYPT_X509PLAIN:
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return "vencrypt+x509+plain"; |
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case VNC_AUTH_VENCRYPT_TLSSASL:
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return "vencrypt+tls+sasl"; |
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case VNC_AUTH_VENCRYPT_X509SASL:
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return "vencrypt+x509+sasl"; |
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default:
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return "vencrypt"; |
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} |
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#else
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return "vencrypt"; |
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#endif
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case VNC_AUTH_SASL:
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return "sasl"; |
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} |
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return "unknown"; |
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} |
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static 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) |
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{ |
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QDict *qdict; |
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if (!client->info) {
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return;
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} |
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qdict = qobject_to_qdict(client->info); |
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#ifdef CONFIG_VNC_TLS
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if (client->tls.session &&
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client->tls.dname) { |
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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) { |
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qdict_put(qdict, "sasl_username",
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qstring_from_str(client->sasl.username)); |
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} |
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#endif
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} |
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static void vnc_client_cache_addr(VncState *client) |
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{ |
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QDict *qdict; |
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qdict = qdict_new(); |
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if (vnc_qdict_remote_addr(qdict, client->csock) < 0) { |
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QDECREF(qdict); |
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/* XXX: how to report the error? */
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return;
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} |
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client->info = QOBJECT(qdict); |
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} |
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static void vnc_qmp_event(VncState *vs, MonitorEvent event) |
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{ |
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QDict *server; |
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QObject *data; |
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if (!vs->info) {
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return;
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} |
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server = qdict_new(); |
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if (vnc_server_info_put(server) < 0) { |
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QDECREF(server); |
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return;
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} |
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data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
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vs->info, QOBJECT(server)); |
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monitor_protocol_event(event, data); |
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qobject_incref(vs->info); |
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qobject_decref(data); |
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} |
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static void info_vnc_iter(QObject *obj, void *opaque) |
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{ |
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QDict *client; |
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Monitor *mon = opaque; |
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client = qobject_to_qdict(obj); |
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monitor_printf(mon, "Client:\n");
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monitor_printf(mon, " address: %s:%s\n",
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qdict_get_str(client, "host"),
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qdict_get_str(client, "service"));
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#ifdef CONFIG_VNC_TLS
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monitor_printf(mon, " x509_dname: %s\n",
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qdict_haskey(client, "x509_dname") ?
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qdict_get_str(client, "x509_dname") : "none"); |
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#endif
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#ifdef CONFIG_VNC_SASL
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monitor_printf(mon, " username: %s\n",
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qdict_haskey(client, "sasl_username") ?
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qdict_get_str(client, "sasl_username") : "none"); |
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#endif
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} |
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void do_info_vnc_print(Monitor *mon, const QObject *data) |
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{ |
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QDict *server; |
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QList *clients; |
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server = qobject_to_qdict(data); |
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if (qdict_get_bool(server, "enabled") == 0) { |
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monitor_printf(mon, "Server: disabled\n");
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return;
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} |
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monitor_printf(mon, "Server:\n");
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monitor_printf(mon, " address: %s:%s\n",
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qdict_get_str(server, "host"),
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qdict_get_str(server, "service"));
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monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth")); |
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clients = qdict_get_qlist(server, "clients");
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if (qlist_empty(clients)) {
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monitor_printf(mon, "Client: none\n");
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} else {
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qlist_iter(clients, info_vnc_iter, mon); |
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} |
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} |
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void do_info_vnc(Monitor *mon, QObject **ret_data)
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{ |
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if (vnc_display == NULL || vnc_display->display == NULL) { |
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*ret_data = qobject_from_jsonf("{ 'enabled': false }");
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} else {
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QList *clist; |
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VncState *client; |
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clist = qlist_new(); |
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QTAILQ_FOREACH(client, &vnc_display->clients, next) { |
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if (client->info) {
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/* incref so that it's not freed by upper layers */
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qobject_incref(client->info); |
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qlist_append_obj(clist, client->info); |
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} |
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} |
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*ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
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QOBJECT(clist)); |
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assert(*ret_data != NULL);
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if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) { |
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qobject_decref(*ret_data); |
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*ret_data = NULL;
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} |
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} |
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} |
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static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
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return (vs->features & (1 << feature)); |
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} |
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|
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/* TODO
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1) Get the queue working for IO.
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2) there is some weirdness when using the -S option (the screen is grey
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and not totally invalidated
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3) resolutions > 1024
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*/
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static int vnc_update_client(VncState *vs, int has_dirty); |
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static void vnc_disconnect_start(VncState *vs); |
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static void vnc_disconnect_finish(VncState *vs); |
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static void vnc_init_timer(VncDisplay *vd); |
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static void vnc_remove_timer(VncDisplay *vd); |
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|
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static void vnc_colordepth(VncState *vs); |
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static void framebuffer_update_request(VncState *vs, int incremental, |
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int x_position, int y_position, |
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int w, int h); |
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static void vnc_refresh(void *opaque); |
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static int vnc_refresh_server_surface(VncDisplay *vd); |
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|
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static inline void vnc_set_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] |= 1 << (k & 0x1f); |
381 |
} |
382 |
|
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static inline void vnc_clear_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] &= ~(1 << (k & 0x1f)); |
386 |
} |
387 |
|
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static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) |
389 |
{ |
390 |
int j;
|
391 |
|
392 |
j = 0;
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while (n >= 32) { |
394 |
d[j++] = -1;
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395 |
n -= 32;
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} |
397 |
if (n > 0) |
398 |
d[j++] = (1 << n) - 1; |
399 |
while (j < nb_words)
|
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d[j++] = 0;
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} |
402 |
|
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static inline int vnc_get_bit(const uint32_t *d, int k) |
404 |
{ |
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return (d[k >> 5] >> (k & 0x1f)) & 1; |
406 |
} |
407 |
|
408 |
static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, |
409 |
int nb_words)
|
410 |
{ |
411 |
int i;
|
412 |
for(i = 0; i < nb_words; i++) { |
413 |
if ((d1[i] & d2[i]) != 0) |
414 |
return 1; |
415 |
} |
416 |
return 0; |
417 |
} |
418 |
|
419 |
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
420 |
{ |
421 |
int i;
|
422 |
VncDisplay *vd = ds->opaque; |
423 |
struct VncSurface *s = &vd->guest;
|
424 |
|
425 |
h += y; |
426 |
|
427 |
/* round x down to ensure the loop only spans one 16-pixel block per,
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428 |
iteration. otherwise, if (x % 16) != 0, the last iteration may span
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429 |
two 16-pixel blocks but we only mark the first as dirty
|
430 |
*/
|
431 |
w += (x % 16);
|
432 |
x -= (x % 16);
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433 |
|
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x = MIN(x, s->ds->width); |
435 |
y = MIN(y, s->ds->height); |
436 |
w = MIN(x + w, s->ds->width) - x; |
437 |
h = MIN(h, s->ds->height); |
438 |
|
439 |
for (; y < h; y++)
|
440 |
for (i = 0; i < w; i += 16) |
441 |
vnc_set_bit(s->dirty[y], (x + i) / 16);
|
442 |
} |
443 |
|
444 |
void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
445 |
int32_t encoding) |
446 |
{ |
447 |
vnc_write_u16(vs, x); |
448 |
vnc_write_u16(vs, y); |
449 |
vnc_write_u16(vs, w); |
450 |
vnc_write_u16(vs, h); |
451 |
|
452 |
vnc_write_s32(vs, encoding); |
453 |
} |
454 |
|
455 |
void buffer_reserve(Buffer *buffer, size_t len)
|
456 |
{ |
457 |
if ((buffer->capacity - buffer->offset) < len) {
|
458 |
buffer->capacity += (len + 1024);
|
459 |
buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity); |
460 |
if (buffer->buffer == NULL) { |
461 |
fprintf(stderr, "vnc: out of memory\n");
|
462 |
exit(1);
|
463 |
} |
464 |
} |
465 |
} |
466 |
|
467 |
int buffer_empty(Buffer *buffer)
|
468 |
{ |
469 |
return buffer->offset == 0; |
470 |
} |
471 |
|
472 |
uint8_t *buffer_end(Buffer *buffer) |
473 |
{ |
474 |
return buffer->buffer + buffer->offset;
|
475 |
} |
476 |
|
477 |
void buffer_reset(Buffer *buffer)
|
478 |
{ |
479 |
buffer->offset = 0;
|
480 |
} |
481 |
|
482 |
void buffer_free(Buffer *buffer)
|
483 |
{ |
484 |
qemu_free(buffer->buffer); |
485 |
buffer->offset = 0;
|
486 |
buffer->capacity = 0;
|
487 |
buffer->buffer = NULL;
|
488 |
} |
489 |
|
490 |
void buffer_append(Buffer *buffer, const void *data, size_t len) |
491 |
{ |
492 |
memcpy(buffer->buffer + buffer->offset, data, len); |
493 |
buffer->offset += len; |
494 |
} |
495 |
|
496 |
static void vnc_desktop_resize(VncState *vs) |
497 |
{ |
498 |
DisplayState *ds = vs->ds; |
499 |
|
500 |
if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
501 |
return;
|
502 |
} |
503 |
if (vs->client_width == ds_get_width(ds) &&
|
504 |
vs->client_height == ds_get_height(ds)) { |
505 |
return;
|
506 |
} |
507 |
vs->client_width = ds_get_width(ds); |
508 |
vs->client_height = ds_get_height(ds); |
509 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
510 |
vnc_write_u8(vs, 0);
|
511 |
vnc_write_u16(vs, 1); /* number of rects */ |
512 |
vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height, |
513 |
VNC_ENCODING_DESKTOPRESIZE); |
514 |
vnc_flush(vs); |
515 |
} |
516 |
|
517 |
static void vnc_dpy_resize(DisplayState *ds) |
518 |
{ |
519 |
VncDisplay *vd = ds->opaque; |
520 |
VncState *vs; |
521 |
|
522 |
/* server surface */
|
523 |
if (!vd->server)
|
524 |
vd->server = qemu_mallocz(sizeof(*vd->server));
|
525 |
if (vd->server->data)
|
526 |
qemu_free(vd->server->data); |
527 |
*(vd->server) = *(ds->surface); |
528 |
vd->server->data = qemu_mallocz(vd->server->linesize * |
529 |
vd->server->height); |
530 |
|
531 |
/* guest surface */
|
532 |
if (!vd->guest.ds)
|
533 |
vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
|
534 |
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
535 |
console_color_init(ds); |
536 |
*(vd->guest.ds) = *(ds->surface); |
537 |
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
538 |
|
539 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
540 |
vnc_colordepth(vs); |
541 |
vnc_desktop_resize(vs); |
542 |
if (vs->vd->cursor) {
|
543 |
vnc_cursor_define(vs); |
544 |
} |
545 |
memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
546 |
} |
547 |
} |
548 |
|
549 |
/* fastest code */
|
550 |
static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf, |
551 |
void *pixels, int size) |
552 |
{ |
553 |
vnc_write(vs, pixels, size); |
554 |
} |
555 |
|
556 |
/* slowest but generic code. */
|
557 |
void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
|
558 |
{ |
559 |
uint8_t r, g, b; |
560 |
VncDisplay *vd = vs->vd; |
561 |
|
562 |
r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >> |
563 |
vd->server->pf.rbits); |
564 |
g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >> |
565 |
vd->server->pf.gbits); |
566 |
b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >> |
567 |
vd->server->pf.bbits); |
568 |
v = (r << vs->clientds.pf.rshift) | |
569 |
(g << vs->clientds.pf.gshift) | |
570 |
(b << vs->clientds.pf.bshift); |
571 |
switch(vs->clientds.pf.bytes_per_pixel) {
|
572 |
case 1: |
573 |
buf[0] = v;
|
574 |
break;
|
575 |
case 2: |
576 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
577 |
buf[0] = v >> 8; |
578 |
buf[1] = v;
|
579 |
} else {
|
580 |
buf[1] = v >> 8; |
581 |
buf[0] = v;
|
582 |
} |
583 |
break;
|
584 |
default:
|
585 |
case 4: |
586 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
587 |
buf[0] = v >> 24; |
588 |
buf[1] = v >> 16; |
589 |
buf[2] = v >> 8; |
590 |
buf[3] = v;
|
591 |
} else {
|
592 |
buf[3] = v >> 24; |
593 |
buf[2] = v >> 16; |
594 |
buf[1] = v >> 8; |
595 |
buf[0] = v;
|
596 |
} |
597 |
break;
|
598 |
} |
599 |
} |
600 |
|
601 |
static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf, |
602 |
void *pixels1, int size) |
603 |
{ |
604 |
uint8_t buf[4];
|
605 |
|
606 |
if (pf->bytes_per_pixel == 4) { |
607 |
uint32_t *pixels = pixels1; |
608 |
int n, i;
|
609 |
n = size >> 2;
|
610 |
for(i = 0; i < n; i++) { |
611 |
vnc_convert_pixel(vs, buf, pixels[i]); |
612 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
613 |
} |
614 |
} else if (pf->bytes_per_pixel == 2) { |
615 |
uint16_t *pixels = pixels1; |
616 |
int n, i;
|
617 |
n = size >> 1;
|
618 |
for(i = 0; i < n; i++) { |
619 |
vnc_convert_pixel(vs, buf, pixels[i]); |
620 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
621 |
} |
622 |
} else if (pf->bytes_per_pixel == 1) { |
623 |
uint8_t *pixels = pixels1; |
624 |
int n, i;
|
625 |
n = size; |
626 |
for(i = 0; i < n; i++) { |
627 |
vnc_convert_pixel(vs, buf, pixels[i]); |
628 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
629 |
} |
630 |
} else {
|
631 |
fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
|
632 |
} |
633 |
} |
634 |
|
635 |
int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
636 |
{ |
637 |
int i;
|
638 |
uint8_t *row; |
639 |
VncDisplay *vd = vs->vd; |
640 |
|
641 |
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
642 |
for (i = 0; i < h; i++) { |
643 |
vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds)); |
644 |
row += ds_get_linesize(vs->ds); |
645 |
} |
646 |
return 1; |
647 |
} |
648 |
|
649 |
static int send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
650 |
{ |
651 |
int n = 0; |
652 |
|
653 |
switch(vs->vnc_encoding) {
|
654 |
case VNC_ENCODING_ZLIB:
|
655 |
n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h); |
656 |
break;
|
657 |
case VNC_ENCODING_HEXTILE:
|
658 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
659 |
n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h); |
660 |
break;
|
661 |
case VNC_ENCODING_TIGHT:
|
662 |
n = vnc_tight_send_framebuffer_update(vs, x, y, w, h); |
663 |
break;
|
664 |
default:
|
665 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
666 |
n = vnc_raw_send_framebuffer_update(vs, x, y, w, h); |
667 |
break;
|
668 |
} |
669 |
return n;
|
670 |
} |
671 |
|
672 |
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
673 |
{ |
674 |
/* send bitblit op to the vnc client */
|
675 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
676 |
vnc_write_u8(vs, 0);
|
677 |
vnc_write_u16(vs, 1); /* number of rects */ |
678 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
679 |
vnc_write_u16(vs, src_x); |
680 |
vnc_write_u16(vs, src_y); |
681 |
vnc_flush(vs); |
682 |
} |
683 |
|
684 |
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
685 |
{ |
686 |
VncDisplay *vd = ds->opaque; |
687 |
VncState *vs, *vn; |
688 |
uint8_t *src_row; |
689 |
uint8_t *dst_row; |
690 |
int i,x,y,pitch,depth,inc,w_lim,s;
|
691 |
int cmp_bytes;
|
692 |
|
693 |
vnc_refresh_server_surface(vd); |
694 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
695 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
696 |
vs->force_update = 1;
|
697 |
vnc_update_client(vs, 1);
|
698 |
/* vs might be free()ed here */
|
699 |
} |
700 |
} |
701 |
|
702 |
/* do bitblit op on the local surface too */
|
703 |
pitch = ds_get_linesize(vd->ds); |
704 |
depth = ds_get_bytes_per_pixel(vd->ds); |
705 |
src_row = vd->server->data + pitch * src_y + depth * src_x; |
706 |
dst_row = vd->server->data + pitch * dst_y + depth * dst_x; |
707 |
y = dst_y; |
708 |
inc = 1;
|
709 |
if (dst_y > src_y) {
|
710 |
/* copy backwards */
|
711 |
src_row += pitch * (h-1);
|
712 |
dst_row += pitch * (h-1);
|
713 |
pitch = -pitch; |
714 |
y = dst_y + h - 1;
|
715 |
inc = -1;
|
716 |
} |
717 |
w_lim = w - (16 - (dst_x % 16)); |
718 |
if (w_lim < 0) |
719 |
w_lim = w; |
720 |
else
|
721 |
w_lim = w - (w_lim % 16);
|
722 |
for (i = 0; i < h; i++) { |
723 |
for (x = 0; x <= w_lim; |
724 |
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) { |
725 |
if (x == w_lim) {
|
726 |
if ((s = w - w_lim) == 0) |
727 |
break;
|
728 |
} else if (!x) { |
729 |
s = (16 - (dst_x % 16)); |
730 |
s = MIN(s, w_lim); |
731 |
} else {
|
732 |
s = 16;
|
733 |
} |
734 |
cmp_bytes = s * depth; |
735 |
if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
736 |
continue;
|
737 |
memmove(dst_row, src_row, cmp_bytes); |
738 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
739 |
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
740 |
vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
|
741 |
} |
742 |
} |
743 |
} |
744 |
src_row += pitch - w * depth; |
745 |
dst_row += pitch - w * depth; |
746 |
y += inc; |
747 |
} |
748 |
|
749 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
750 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
751 |
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
752 |
} |
753 |
} |
754 |
} |
755 |
|
756 |
static void vnc_mouse_set(int x, int y, int visible) |
757 |
{ |
758 |
/* can we ask the client(s) to move the pointer ??? */
|
759 |
} |
760 |
|
761 |
static int vnc_cursor_define(VncState *vs) |
762 |
{ |
763 |
QEMUCursor *c = vs->vd->cursor; |
764 |
PixelFormat pf = qemu_default_pixelformat(32);
|
765 |
int isize;
|
766 |
|
767 |
if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
|
768 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
769 |
vnc_write_u8(vs, 0); /* padding */ |
770 |
vnc_write_u16(vs, 1); /* # of rects */ |
771 |
vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height, |
772 |
VNC_ENCODING_RICH_CURSOR); |
773 |
isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel; |
774 |
vnc_write_pixels_generic(vs, &pf, c->data, isize); |
775 |
vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize); |
776 |
return 0; |
777 |
} |
778 |
return -1; |
779 |
} |
780 |
|
781 |
static void vnc_dpy_cursor_define(QEMUCursor *c) |
782 |
{ |
783 |
VncDisplay *vd = vnc_display; |
784 |
VncState *vs; |
785 |
|
786 |
cursor_put(vd->cursor); |
787 |
qemu_free(vd->cursor_mask); |
788 |
|
789 |
vd->cursor = c; |
790 |
cursor_get(vd->cursor); |
791 |
vd->cursor_msize = cursor_get_mono_bpl(c) * c->height; |
792 |
vd->cursor_mask = qemu_mallocz(vd->cursor_msize); |
793 |
cursor_get_mono_mask(c, 0, vd->cursor_mask);
|
794 |
|
795 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
796 |
vnc_cursor_define(vs); |
797 |
} |
798 |
} |
799 |
|
800 |
static int find_and_clear_dirty_height(struct VncState *vs, |
801 |
int y, int last_x, int x) |
802 |
{ |
803 |
int h;
|
804 |
VncDisplay *vd = vs->vd; |
805 |
|
806 |
for (h = 1; h < (vd->server->height - y); h++) { |
807 |
int tmp_x;
|
808 |
if (!vnc_get_bit(vs->dirty[y + h], last_x))
|
809 |
break;
|
810 |
for (tmp_x = last_x; tmp_x < x; tmp_x++)
|
811 |
vnc_clear_bit(vs->dirty[y + h], tmp_x); |
812 |
} |
813 |
|
814 |
return h;
|
815 |
} |
816 |
|
817 |
static int vnc_update_client(VncState *vs, int has_dirty) |
818 |
{ |
819 |
if (vs->need_update && vs->csock != -1) { |
820 |
VncDisplay *vd = vs->vd; |
821 |
int y;
|
822 |
int n_rectangles;
|
823 |
int saved_offset;
|
824 |
int width, height;
|
825 |
int n;
|
826 |
|
827 |
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
828 |
/* kernel send buffers are full -> drop frames to throttle */
|
829 |
return 0; |
830 |
|
831 |
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
832 |
return 0; |
833 |
|
834 |
/*
|
835 |
* Send screen updates to the vnc client using the server
|
836 |
* surface and server dirty map. guest surface updates
|
837 |
* happening in parallel don't disturb us, the next pass will
|
838 |
* send them to the client.
|
839 |
*/
|
840 |
n_rectangles = 0;
|
841 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
842 |
vnc_write_u8(vs, 0);
|
843 |
saved_offset = vs->output.offset; |
844 |
vnc_write_u16(vs, 0);
|
845 |
|
846 |
width = MIN(vd->server->width, vs->client_width); |
847 |
height = MIN(vd->server->height, vs->client_height); |
848 |
|
849 |
for (y = 0; y < height; y++) { |
850 |
int x;
|
851 |
int last_x = -1; |
852 |
for (x = 0; x < width / 16; x++) { |
853 |
if (vnc_get_bit(vs->dirty[y], x)) {
|
854 |
if (last_x == -1) { |
855 |
last_x = x; |
856 |
} |
857 |
vnc_clear_bit(vs->dirty[y], x); |
858 |
} else {
|
859 |
if (last_x != -1) { |
860 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
861 |
n = send_framebuffer_update(vs, last_x * 16, y,
|
862 |
(x - last_x) * 16, h);
|
863 |
n_rectangles += n; |
864 |
} |
865 |
last_x = -1;
|
866 |
} |
867 |
} |
868 |
if (last_x != -1) { |
869 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
870 |
n = send_framebuffer_update(vs, last_x * 16, y,
|
871 |
(x - last_x) * 16, h);
|
872 |
n_rectangles += n; |
873 |
} |
874 |
} |
875 |
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; |
876 |
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; |
877 |
vnc_flush(vs); |
878 |
vs->force_update = 0;
|
879 |
return n_rectangles;
|
880 |
} |
881 |
|
882 |
if (vs->csock == -1) |
883 |
vnc_disconnect_finish(vs); |
884 |
|
885 |
return 0; |
886 |
} |
887 |
|
888 |
/* audio */
|
889 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
890 |
{ |
891 |
VncState *vs = opaque; |
892 |
|
893 |
switch (cmd) {
|
894 |
case AUD_CNOTIFY_DISABLE:
|
895 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
896 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
897 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END); |
898 |
vnc_flush(vs); |
899 |
break;
|
900 |
|
901 |
case AUD_CNOTIFY_ENABLE:
|
902 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
903 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
904 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN); |
905 |
vnc_flush(vs); |
906 |
break;
|
907 |
} |
908 |
} |
909 |
|
910 |
static void audio_capture_destroy(void *opaque) |
911 |
{ |
912 |
} |
913 |
|
914 |
static void audio_capture(void *opaque, void *buf, int size) |
915 |
{ |
916 |
VncState *vs = opaque; |
917 |
|
918 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
919 |
vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
920 |
vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA); |
921 |
vnc_write_u32(vs, size); |
922 |
vnc_write(vs, buf, size); |
923 |
vnc_flush(vs); |
924 |
} |
925 |
|
926 |
static void audio_add(VncState *vs) |
927 |
{ |
928 |
struct audio_capture_ops ops;
|
929 |
|
930 |
if (vs->audio_cap) {
|
931 |
monitor_printf(default_mon, "audio already running\n");
|
932 |
return;
|
933 |
} |
934 |
|
935 |
ops.notify = audio_capture_notify; |
936 |
ops.destroy = audio_capture_destroy; |
937 |
ops.capture = audio_capture; |
938 |
|
939 |
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
940 |
if (!vs->audio_cap) {
|
941 |
monitor_printf(default_mon, "Failed to add audio capture\n");
|
942 |
} |
943 |
} |
944 |
|
945 |
static void audio_del(VncState *vs) |
946 |
{ |
947 |
if (vs->audio_cap) {
|
948 |
AUD_del_capture(vs->audio_cap, vs); |
949 |
vs->audio_cap = NULL;
|
950 |
} |
951 |
} |
952 |
|
953 |
static void vnc_disconnect_start(VncState *vs) |
954 |
{ |
955 |
if (vs->csock == -1) |
956 |
return;
|
957 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
958 |
closesocket(vs->csock); |
959 |
vs->csock = -1;
|
960 |
} |
961 |
|
962 |
static void vnc_disconnect_finish(VncState *vs) |
963 |
{ |
964 |
vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED); |
965 |
|
966 |
buffer_free(&vs->input); |
967 |
buffer_free(&vs->output); |
968 |
|
969 |
qobject_decref(vs->info); |
970 |
|
971 |
vnc_zlib_clear(vs); |
972 |
vnc_tight_clear(vs); |
973 |
|
974 |
#ifdef CONFIG_VNC_TLS
|
975 |
vnc_tls_client_cleanup(vs); |
976 |
#endif /* CONFIG_VNC_TLS */ |
977 |
#ifdef CONFIG_VNC_SASL
|
978 |
vnc_sasl_client_cleanup(vs); |
979 |
#endif /* CONFIG_VNC_SASL */ |
980 |
audio_del(vs); |
981 |
|
982 |
QTAILQ_REMOVE(&vs->vd->clients, vs, next); |
983 |
|
984 |
if (QTAILQ_EMPTY(&vs->vd->clients)) {
|
985 |
dcl->idle = 1;
|
986 |
} |
987 |
|
988 |
qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
989 |
vnc_remove_timer(vs->vd); |
990 |
if (vs->vd->lock_key_sync)
|
991 |
qemu_remove_led_event_handler(vs->led); |
992 |
qemu_free(vs); |
993 |
} |
994 |
|
995 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
996 |
{ |
997 |
if (ret == 0 || ret == -1) { |
998 |
if (ret == -1) { |
999 |
switch (last_errno) {
|
1000 |
case EINTR:
|
1001 |
case EAGAIN:
|
1002 |
#ifdef _WIN32
|
1003 |
case WSAEWOULDBLOCK:
|
1004 |
#endif
|
1005 |
return 0; |
1006 |
default:
|
1007 |
break;
|
1008 |
} |
1009 |
} |
1010 |
|
1011 |
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
1012 |
ret, ret < 0 ? last_errno : 0); |
1013 |
vnc_disconnect_start(vs); |
1014 |
|
1015 |
return 0; |
1016 |
} |
1017 |
return ret;
|
1018 |
} |
1019 |
|
1020 |
|
1021 |
void vnc_client_error(VncState *vs)
|
1022 |
{ |
1023 |
VNC_DEBUG("Closing down client sock: protocol error\n");
|
1024 |
vnc_disconnect_start(vs); |
1025 |
} |
1026 |
|
1027 |
|
1028 |
/*
|
1029 |
* Called to write a chunk of data to the client socket. The data may
|
1030 |
* be the raw data, or may have already been encoded by SASL.
|
1031 |
* The data will be written either straight onto the socket, or
|
1032 |
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1033 |
*
|
1034 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1035 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1036 |
* though, since SASL encryption will typically be a no-op if TLS
|
1037 |
* is active
|
1038 |
*
|
1039 |
* Returns the number of bytes written, which may be less than
|
1040 |
* the requested 'datalen' if the socket would block. Returns
|
1041 |
* -1 on error, and disconnects the client socket.
|
1042 |
*/
|
1043 |
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
1044 |
{ |
1045 |
long ret;
|
1046 |
#ifdef CONFIG_VNC_TLS
|
1047 |
if (vs->tls.session) {
|
1048 |
ret = gnutls_write(vs->tls.session, data, datalen); |
1049 |
if (ret < 0) { |
1050 |
if (ret == GNUTLS_E_AGAIN)
|
1051 |
errno = EAGAIN; |
1052 |
else
|
1053 |
errno = EIO; |
1054 |
ret = -1;
|
1055 |
} |
1056 |
} else
|
1057 |
#endif /* CONFIG_VNC_TLS */ |
1058 |
ret = send(vs->csock, (const void *)data, datalen, 0); |
1059 |
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
1060 |
return vnc_client_io_error(vs, ret, socket_error());
|
1061 |
} |
1062 |
|
1063 |
|
1064 |
/*
|
1065 |
* Called to write buffered data to the client socket, when not
|
1066 |
* using any SASL SSF encryption layers. Will write as much data
|
1067 |
* as possible without blocking. If all buffered data is written,
|
1068 |
* will switch the FD poll() handler back to read monitoring.
|
1069 |
*
|
1070 |
* Returns the number of bytes written, which may be less than
|
1071 |
* the buffered output data if the socket would block. Returns
|
1072 |
* -1 on error, and disconnects the client socket.
|
1073 |
*/
|
1074 |
static long vnc_client_write_plain(VncState *vs) |
1075 |
{ |
1076 |
long ret;
|
1077 |
|
1078 |
#ifdef CONFIG_VNC_SASL
|
1079 |
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
1080 |
vs->output.buffer, vs->output.capacity, vs->output.offset, |
1081 |
vs->sasl.waitWriteSSF); |
1082 |
|
1083 |
if (vs->sasl.conn &&
|
1084 |
vs->sasl.runSSF && |
1085 |
vs->sasl.waitWriteSSF) { |
1086 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
1087 |
if (ret)
|
1088 |
vs->sasl.waitWriteSSF -= ret; |
1089 |
} else
|
1090 |
#endif /* CONFIG_VNC_SASL */ |
1091 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
1092 |
if (!ret)
|
1093 |
return 0; |
1094 |
|
1095 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
1096 |
vs->output.offset -= ret; |
1097 |
|
1098 |
if (vs->output.offset == 0) { |
1099 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
1100 |
} |
1101 |
|
1102 |
return ret;
|
1103 |
} |
1104 |
|
1105 |
|
1106 |
/*
|
1107 |
* First function called whenever there is data to be written to
|
1108 |
* the client socket. Will delegate actual work according to whether
|
1109 |
* SASL SSF layers are enabled (thus requiring encryption calls)
|
1110 |
*/
|
1111 |
void vnc_client_write(void *opaque) |
1112 |
{ |
1113 |
VncState *vs = opaque; |
1114 |
|
1115 |
#ifdef CONFIG_VNC_SASL
|
1116 |
if (vs->sasl.conn &&
|
1117 |
vs->sasl.runSSF && |
1118 |
!vs->sasl.waitWriteSSF) { |
1119 |
vnc_client_write_sasl(vs); |
1120 |
} else
|
1121 |
#endif /* CONFIG_VNC_SASL */ |
1122 |
vnc_client_write_plain(vs); |
1123 |
} |
1124 |
|
1125 |
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
1126 |
{ |
1127 |
vs->read_handler = func; |
1128 |
vs->read_handler_expect = expecting; |
1129 |
} |
1130 |
|
1131 |
|
1132 |
/*
|
1133 |
* Called to read a chunk of data from the client socket. The data may
|
1134 |
* be the raw data, or may need to be further decoded by SASL.
|
1135 |
* The data will be read either straight from to the socket, or
|
1136 |
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1137 |
*
|
1138 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1139 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1140 |
* though, since SASL encryption will typically be a no-op if TLS
|
1141 |
* is active
|
1142 |
*
|
1143 |
* Returns the number of bytes read, which may be less than
|
1144 |
* the requested 'datalen' if the socket would block. Returns
|
1145 |
* -1 on error, and disconnects the client socket.
|
1146 |
*/
|
1147 |
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
1148 |
{ |
1149 |
long ret;
|
1150 |
#ifdef CONFIG_VNC_TLS
|
1151 |
if (vs->tls.session) {
|
1152 |
ret = gnutls_read(vs->tls.session, data, datalen); |
1153 |
if (ret < 0) { |
1154 |
if (ret == GNUTLS_E_AGAIN)
|
1155 |
errno = EAGAIN; |
1156 |
else
|
1157 |
errno = EIO; |
1158 |
ret = -1;
|
1159 |
} |
1160 |
} else
|
1161 |
#endif /* CONFIG_VNC_TLS */ |
1162 |
ret = recv(vs->csock, (void *)data, datalen, 0); |
1163 |
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
1164 |
return vnc_client_io_error(vs, ret, socket_error());
|
1165 |
} |
1166 |
|
1167 |
|
1168 |
/*
|
1169 |
* Called to read data from the client socket to the input buffer,
|
1170 |
* when not using any SASL SSF encryption layers. Will read as much
|
1171 |
* data as possible without blocking.
|
1172 |
*
|
1173 |
* Returns the number of bytes read. Returns -1 on error, and
|
1174 |
* disconnects the client socket.
|
1175 |
*/
|
1176 |
static long vnc_client_read_plain(VncState *vs) |
1177 |
{ |
1178 |
int ret;
|
1179 |
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
1180 |
vs->input.buffer, vs->input.capacity, vs->input.offset); |
1181 |
buffer_reserve(&vs->input, 4096);
|
1182 |
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
1183 |
if (!ret)
|
1184 |
return 0; |
1185 |
vs->input.offset += ret; |
1186 |
return ret;
|
1187 |
} |
1188 |
|
1189 |
|
1190 |
/*
|
1191 |
* First function called whenever there is more data to be read from
|
1192 |
* the client socket. Will delegate actual work according to whether
|
1193 |
* SASL SSF layers are enabled (thus requiring decryption calls)
|
1194 |
*/
|
1195 |
void vnc_client_read(void *opaque) |
1196 |
{ |
1197 |
VncState *vs = opaque; |
1198 |
long ret;
|
1199 |
|
1200 |
#ifdef CONFIG_VNC_SASL
|
1201 |
if (vs->sasl.conn && vs->sasl.runSSF)
|
1202 |
ret = vnc_client_read_sasl(vs); |
1203 |
else
|
1204 |
#endif /* CONFIG_VNC_SASL */ |
1205 |
ret = vnc_client_read_plain(vs); |
1206 |
if (!ret) {
|
1207 |
if (vs->csock == -1) |
1208 |
vnc_disconnect_finish(vs); |
1209 |
return;
|
1210 |
} |
1211 |
|
1212 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
1213 |
size_t len = vs->read_handler_expect; |
1214 |
int ret;
|
1215 |
|
1216 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
1217 |
if (vs->csock == -1) { |
1218 |
vnc_disconnect_finish(vs); |
1219 |
return;
|
1220 |
} |
1221 |
|
1222 |
if (!ret) {
|
1223 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
1224 |
vs->input.offset -= len; |
1225 |
} else {
|
1226 |
vs->read_handler_expect = ret; |
1227 |
} |
1228 |
} |
1229 |
} |
1230 |
|
1231 |
void vnc_write(VncState *vs, const void *data, size_t len) |
1232 |
{ |
1233 |
buffer_reserve(&vs->output, len); |
1234 |
|
1235 |
if (vs->csock != -1 && buffer_empty(&vs->output)) { |
1236 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
1237 |
} |
1238 |
|
1239 |
buffer_append(&vs->output, data, len); |
1240 |
} |
1241 |
|
1242 |
void vnc_write_s32(VncState *vs, int32_t value)
|
1243 |
{ |
1244 |
vnc_write_u32(vs, *(uint32_t *)&value); |
1245 |
} |
1246 |
|
1247 |
void vnc_write_u32(VncState *vs, uint32_t value)
|
1248 |
{ |
1249 |
uint8_t buf[4];
|
1250 |
|
1251 |
buf[0] = (value >> 24) & 0xFF; |
1252 |
buf[1] = (value >> 16) & 0xFF; |
1253 |
buf[2] = (value >> 8) & 0xFF; |
1254 |
buf[3] = value & 0xFF; |
1255 |
|
1256 |
vnc_write(vs, buf, 4);
|
1257 |
} |
1258 |
|
1259 |
void vnc_write_u16(VncState *vs, uint16_t value)
|
1260 |
{ |
1261 |
uint8_t buf[2];
|
1262 |
|
1263 |
buf[0] = (value >> 8) & 0xFF; |
1264 |
buf[1] = value & 0xFF; |
1265 |
|
1266 |
vnc_write(vs, buf, 2);
|
1267 |
} |
1268 |
|
1269 |
void vnc_write_u8(VncState *vs, uint8_t value)
|
1270 |
{ |
1271 |
vnc_write(vs, (char *)&value, 1); |
1272 |
} |
1273 |
|
1274 |
void vnc_flush(VncState *vs)
|
1275 |
{ |
1276 |
if (vs->csock != -1 && vs->output.offset) |
1277 |
vnc_client_write(vs); |
1278 |
} |
1279 |
|
1280 |
uint8_t read_u8(uint8_t *data, size_t offset) |
1281 |
{ |
1282 |
return data[offset];
|
1283 |
} |
1284 |
|
1285 |
uint16_t read_u16(uint8_t *data, size_t offset) |
1286 |
{ |
1287 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
1288 |
} |
1289 |
|
1290 |
int32_t read_s32(uint8_t *data, size_t offset) |
1291 |
{ |
1292 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
1293 |
(data[offset + 2] << 8) | data[offset + 3]); |
1294 |
} |
1295 |
|
1296 |
uint32_t read_u32(uint8_t *data, size_t offset) |
1297 |
{ |
1298 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
1299 |
(data[offset + 2] << 8) | data[offset + 3]); |
1300 |
} |
1301 |
|
1302 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
1303 |
{ |
1304 |
} |
1305 |
|
1306 |
static void check_pointer_type_change(Notifier *notifier) |
1307 |
{ |
1308 |
VncState *vs = container_of(notifier, VncState, mouse_mode_notifier); |
1309 |
int absolute = kbd_mouse_is_absolute();
|
1310 |
|
1311 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
1312 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1313 |
vnc_write_u8(vs, 0);
|
1314 |
vnc_write_u16(vs, 1);
|
1315 |
vnc_framebuffer_update(vs, absolute, 0,
|
1316 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
1317 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
1318 |
vnc_flush(vs); |
1319 |
} |
1320 |
vs->absolute = absolute; |
1321 |
} |
1322 |
|
1323 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
1324 |
{ |
1325 |
int buttons = 0; |
1326 |
int dz = 0; |
1327 |
|
1328 |
if (button_mask & 0x01) |
1329 |
buttons |= MOUSE_EVENT_LBUTTON; |
1330 |
if (button_mask & 0x02) |
1331 |
buttons |= MOUSE_EVENT_MBUTTON; |
1332 |
if (button_mask & 0x04) |
1333 |
buttons |= MOUSE_EVENT_RBUTTON; |
1334 |
if (button_mask & 0x08) |
1335 |
dz = -1;
|
1336 |
if (button_mask & 0x10) |
1337 |
dz = 1;
|
1338 |
|
1339 |
if (vs->absolute) {
|
1340 |
kbd_mouse_event(ds_get_width(vs->ds) > 1 ?
|
1341 |
x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000, |
1342 |
ds_get_height(vs->ds) > 1 ?
|
1343 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000, |
1344 |
dz, buttons); |
1345 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
1346 |
x -= 0x7FFF;
|
1347 |
y -= 0x7FFF;
|
1348 |
|
1349 |
kbd_mouse_event(x, y, dz, buttons); |
1350 |
} else {
|
1351 |
if (vs->last_x != -1) |
1352 |
kbd_mouse_event(x - vs->last_x, |
1353 |
y - vs->last_y, |
1354 |
dz, buttons); |
1355 |
vs->last_x = x; |
1356 |
vs->last_y = y; |
1357 |
} |
1358 |
} |
1359 |
|
1360 |
static void reset_keys(VncState *vs) |
1361 |
{ |
1362 |
int i;
|
1363 |
for(i = 0; i < 256; i++) { |
1364 |
if (vs->modifiers_state[i]) {
|
1365 |
if (i & SCANCODE_GREY)
|
1366 |
kbd_put_keycode(SCANCODE_EMUL0); |
1367 |
kbd_put_keycode(i | SCANCODE_UP); |
1368 |
vs->modifiers_state[i] = 0;
|
1369 |
} |
1370 |
} |
1371 |
} |
1372 |
|
1373 |
static void press_key(VncState *vs, int keysym) |
1374 |
{ |
1375 |
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
|
1376 |
if (keycode & SCANCODE_GREY)
|
1377 |
kbd_put_keycode(SCANCODE_EMUL0); |
1378 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1379 |
if (keycode & SCANCODE_GREY)
|
1380 |
kbd_put_keycode(SCANCODE_EMUL0); |
1381 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1382 |
} |
1383 |
|
1384 |
static void kbd_leds(void *opaque, int ledstate) |
1385 |
{ |
1386 |
VncState *vs = opaque; |
1387 |
int caps, num;
|
1388 |
|
1389 |
caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0; |
1390 |
num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0; |
1391 |
|
1392 |
if (vs->modifiers_state[0x3a] != caps) { |
1393 |
vs->modifiers_state[0x3a] = caps;
|
1394 |
} |
1395 |
if (vs->modifiers_state[0x45] != num) { |
1396 |
vs->modifiers_state[0x45] = num;
|
1397 |
} |
1398 |
} |
1399 |
|
1400 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
1401 |
{ |
1402 |
/* QEMU console switch */
|
1403 |
switch(keycode) {
|
1404 |
case 0x2a: /* Left Shift */ |
1405 |
case 0x36: /* Right Shift */ |
1406 |
case 0x1d: /* Left CTRL */ |
1407 |
case 0x9d: /* Right CTRL */ |
1408 |
case 0x38: /* Left ALT */ |
1409 |
case 0xb8: /* Right ALT */ |
1410 |
if (down)
|
1411 |
vs->modifiers_state[keycode] = 1;
|
1412 |
else
|
1413 |
vs->modifiers_state[keycode] = 0;
|
1414 |
break;
|
1415 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
1416 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
1417 |
/* Reset the modifiers sent to the current console */
|
1418 |
reset_keys(vs); |
1419 |
console_select(keycode - 0x02);
|
1420 |
return;
|
1421 |
} |
1422 |
break;
|
1423 |
case 0x3a: /* CapsLock */ |
1424 |
case 0x45: /* NumLock */ |
1425 |
if (down)
|
1426 |
vs->modifiers_state[keycode] ^= 1;
|
1427 |
break;
|
1428 |
} |
1429 |
|
1430 |
if (vs->vd->lock_key_sync &&
|
1431 |
keycode_is_keypad(vs->vd->kbd_layout, keycode)) { |
1432 |
/* If the numlock state needs to change then simulate an additional
|
1433 |
keypress before sending this one. This will happen if the user
|
1434 |
toggles numlock away from the VNC window.
|
1435 |
*/
|
1436 |
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
1437 |
if (!vs->modifiers_state[0x45]) { |
1438 |
vs->modifiers_state[0x45] = 1; |
1439 |
press_key(vs, 0xff7f);
|
1440 |
} |
1441 |
} else {
|
1442 |
if (vs->modifiers_state[0x45]) { |
1443 |
vs->modifiers_state[0x45] = 0; |
1444 |
press_key(vs, 0xff7f);
|
1445 |
} |
1446 |
} |
1447 |
} |
1448 |
|
1449 |
if (vs->vd->lock_key_sync &&
|
1450 |
((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) { |
1451 |
/* If the capslock state needs to change then simulate an additional
|
1452 |
keypress before sending this one. This will happen if the user
|
1453 |
toggles capslock away from the VNC window.
|
1454 |
*/
|
1455 |
int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
1456 |
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
1457 |
int capslock = !!(vs->modifiers_state[0x3a]); |
1458 |
if (capslock) {
|
1459 |
if (uppercase == shift) {
|
1460 |
vs->modifiers_state[0x3a] = 0; |
1461 |
press_key(vs, 0xffe5);
|
1462 |
} |
1463 |
} else {
|
1464 |
if (uppercase != shift) {
|
1465 |
vs->modifiers_state[0x3a] = 1; |
1466 |
press_key(vs, 0xffe5);
|
1467 |
} |
1468 |
} |
1469 |
} |
1470 |
|
1471 |
if (is_graphic_console()) {
|
1472 |
if (keycode & SCANCODE_GREY)
|
1473 |
kbd_put_keycode(SCANCODE_EMUL0); |
1474 |
if (down)
|
1475 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1476 |
else
|
1477 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1478 |
} else {
|
1479 |
/* QEMU console emulation */
|
1480 |
if (down) {
|
1481 |
int numlock = vs->modifiers_state[0x45]; |
1482 |
switch (keycode) {
|
1483 |
case 0x2a: /* Left Shift */ |
1484 |
case 0x36: /* Right Shift */ |
1485 |
case 0x1d: /* Left CTRL */ |
1486 |
case 0x9d: /* Right CTRL */ |
1487 |
case 0x38: /* Left ALT */ |
1488 |
case 0xb8: /* Right ALT */ |
1489 |
break;
|
1490 |
case 0xc8: |
1491 |
kbd_put_keysym(QEMU_KEY_UP); |
1492 |
break;
|
1493 |
case 0xd0: |
1494 |
kbd_put_keysym(QEMU_KEY_DOWN); |
1495 |
break;
|
1496 |
case 0xcb: |
1497 |
kbd_put_keysym(QEMU_KEY_LEFT); |
1498 |
break;
|
1499 |
case 0xcd: |
1500 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
1501 |
break;
|
1502 |
case 0xd3: |
1503 |
kbd_put_keysym(QEMU_KEY_DELETE); |
1504 |
break;
|
1505 |
case 0xc7: |
1506 |
kbd_put_keysym(QEMU_KEY_HOME); |
1507 |
break;
|
1508 |
case 0xcf: |
1509 |
kbd_put_keysym(QEMU_KEY_END); |
1510 |
break;
|
1511 |
case 0xc9: |
1512 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
1513 |
break;
|
1514 |
case 0xd1: |
1515 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
1516 |
break;
|
1517 |
|
1518 |
case 0x47: |
1519 |
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
1520 |
break;
|
1521 |
case 0x48: |
1522 |
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
1523 |
break;
|
1524 |
case 0x49: |
1525 |
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
1526 |
break;
|
1527 |
case 0x4b: |
1528 |
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
1529 |
break;
|
1530 |
case 0x4c: |
1531 |
kbd_put_keysym('5');
|
1532 |
break;
|
1533 |
case 0x4d: |
1534 |
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
1535 |
break;
|
1536 |
case 0x4f: |
1537 |
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
1538 |
break;
|
1539 |
case 0x50: |
1540 |
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
1541 |
break;
|
1542 |
case 0x51: |
1543 |
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
1544 |
break;
|
1545 |
case 0x52: |
1546 |
kbd_put_keysym('0');
|
1547 |
break;
|
1548 |
case 0x53: |
1549 |
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
1550 |
break;
|
1551 |
|
1552 |
case 0xb5: |
1553 |
kbd_put_keysym('/');
|
1554 |
break;
|
1555 |
case 0x37: |
1556 |
kbd_put_keysym('*');
|
1557 |
break;
|
1558 |
case 0x4a: |
1559 |
kbd_put_keysym('-');
|
1560 |
break;
|
1561 |
case 0x4e: |
1562 |
kbd_put_keysym('+');
|
1563 |
break;
|
1564 |
case 0x9c: |
1565 |
kbd_put_keysym('\n');
|
1566 |
break;
|
1567 |
|
1568 |
default:
|
1569 |
kbd_put_keysym(sym); |
1570 |
break;
|
1571 |
} |
1572 |
} |
1573 |
} |
1574 |
} |
1575 |
|
1576 |
static void key_event(VncState *vs, int down, uint32_t sym) |
1577 |
{ |
1578 |
int keycode;
|
1579 |
int lsym = sym;
|
1580 |
|
1581 |
if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) { |
1582 |
lsym = lsym - 'A' + 'a'; |
1583 |
} |
1584 |
|
1585 |
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
|
1586 |
do_key_event(vs, down, keycode, sym); |
1587 |
} |
1588 |
|
1589 |
static void ext_key_event(VncState *vs, int down, |
1590 |
uint32_t sym, uint16_t keycode) |
1591 |
{ |
1592 |
/* if the user specifies a keyboard layout, always use it */
|
1593 |
if (keyboard_layout)
|
1594 |
key_event(vs, down, sym); |
1595 |
else
|
1596 |
do_key_event(vs, down, keycode, sym); |
1597 |
} |
1598 |
|
1599 |
static void framebuffer_update_request(VncState *vs, int incremental, |
1600 |
int x_position, int y_position, |
1601 |
int w, int h) |
1602 |
{ |
1603 |
if (y_position > ds_get_height(vs->ds))
|
1604 |
y_position = ds_get_height(vs->ds); |
1605 |
if (y_position + h >= ds_get_height(vs->ds))
|
1606 |
h = ds_get_height(vs->ds) - y_position; |
1607 |
|
1608 |
int i;
|
1609 |
vs->need_update = 1;
|
1610 |
if (!incremental) {
|
1611 |
vs->force_update = 1;
|
1612 |
for (i = 0; i < h; i++) { |
1613 |
vnc_set_bits(vs->dirty[y_position + i], |
1614 |
(ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
1615 |
} |
1616 |
} |
1617 |
} |
1618 |
|
1619 |
static void send_ext_key_event_ack(VncState *vs) |
1620 |
{ |
1621 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1622 |
vnc_write_u8(vs, 0);
|
1623 |
vnc_write_u16(vs, 1);
|
1624 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1625 |
VNC_ENCODING_EXT_KEY_EVENT); |
1626 |
vnc_flush(vs); |
1627 |
} |
1628 |
|
1629 |
static void send_ext_audio_ack(VncState *vs) |
1630 |
{ |
1631 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1632 |
vnc_write_u8(vs, 0);
|
1633 |
vnc_write_u16(vs, 1);
|
1634 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1635 |
VNC_ENCODING_AUDIO); |
1636 |
vnc_flush(vs); |
1637 |
} |
1638 |
|
1639 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
1640 |
{ |
1641 |
int i;
|
1642 |
unsigned int enc = 0; |
1643 |
|
1644 |
vs->features = 0;
|
1645 |
vs->vnc_encoding = 0;
|
1646 |
vs->tight_compression = 9;
|
1647 |
vs->tight_quality = -1; /* Lossless by default */ |
1648 |
vs->absolute = -1;
|
1649 |
|
1650 |
/*
|
1651 |
* Start from the end because the encodings are sent in order of preference.
|
1652 |
* This way the prefered encoding (first encoding defined in the array)
|
1653 |
* will be set at the end of the loop.
|
1654 |
*/
|
1655 |
for (i = n_encodings - 1; i >= 0; i--) { |
1656 |
enc = encodings[i]; |
1657 |
switch (enc) {
|
1658 |
case VNC_ENCODING_RAW:
|
1659 |
vs->vnc_encoding = enc; |
1660 |
break;
|
1661 |
case VNC_ENCODING_COPYRECT:
|
1662 |
vs->features |= VNC_FEATURE_COPYRECT_MASK; |
1663 |
break;
|
1664 |
case VNC_ENCODING_HEXTILE:
|
1665 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
1666 |
vs->vnc_encoding = enc; |
1667 |
break;
|
1668 |
case VNC_ENCODING_TIGHT:
|
1669 |
vs->features |= VNC_FEATURE_TIGHT_MASK; |
1670 |
vs->vnc_encoding = enc; |
1671 |
break;
|
1672 |
case VNC_ENCODING_ZLIB:
|
1673 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
1674 |
vs->vnc_encoding = enc; |
1675 |
break;
|
1676 |
case VNC_ENCODING_DESKTOPRESIZE:
|
1677 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
1678 |
break;
|
1679 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
1680 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
1681 |
break;
|
1682 |
case VNC_ENCODING_RICH_CURSOR:
|
1683 |
vs->features |= VNC_FEATURE_RICH_CURSOR_MASK; |
1684 |
break;
|
1685 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
1686 |
send_ext_key_event_ack(vs); |
1687 |
break;
|
1688 |
case VNC_ENCODING_AUDIO:
|
1689 |
send_ext_audio_ack(vs); |
1690 |
break;
|
1691 |
case VNC_ENCODING_WMVi:
|
1692 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
1693 |
break;
|
1694 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
1695 |
vs->tight_compression = (enc & 0x0F);
|
1696 |
break;
|
1697 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
1698 |
vs->tight_quality = (enc & 0x0F);
|
1699 |
break;
|
1700 |
default:
|
1701 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
1702 |
break;
|
1703 |
} |
1704 |
} |
1705 |
vnc_desktop_resize(vs); |
1706 |
check_pointer_type_change(&vs->mouse_mode_notifier); |
1707 |
} |
1708 |
|
1709 |
static void set_pixel_conversion(VncState *vs) |
1710 |
{ |
1711 |
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
1712 |
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
1713 |
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
1714 |
vs->write_pixels = vnc_write_pixels_copy; |
1715 |
vnc_hextile_set_pixel_conversion(vs, 0);
|
1716 |
} else {
|
1717 |
vs->write_pixels = vnc_write_pixels_generic; |
1718 |
vnc_hextile_set_pixel_conversion(vs, 1);
|
1719 |
} |
1720 |
} |
1721 |
|
1722 |
static void set_pixel_format(VncState *vs, |
1723 |
int bits_per_pixel, int depth, |
1724 |
int big_endian_flag, int true_color_flag, |
1725 |
int red_max, int green_max, int blue_max, |
1726 |
int red_shift, int green_shift, int blue_shift) |
1727 |
{ |
1728 |
if (!true_color_flag) {
|
1729 |
vnc_client_error(vs); |
1730 |
return;
|
1731 |
} |
1732 |
|
1733 |
vs->clientds = *(vs->vd->guest.ds); |
1734 |
vs->clientds.pf.rmax = red_max; |
1735 |
count_bits(vs->clientds.pf.rbits, red_max); |
1736 |
vs->clientds.pf.rshift = red_shift; |
1737 |
vs->clientds.pf.rmask = red_max << red_shift; |
1738 |
vs->clientds.pf.gmax = green_max; |
1739 |
count_bits(vs->clientds.pf.gbits, green_max); |
1740 |
vs->clientds.pf.gshift = green_shift; |
1741 |
vs->clientds.pf.gmask = green_max << green_shift; |
1742 |
vs->clientds.pf.bmax = blue_max; |
1743 |
count_bits(vs->clientds.pf.bbits, blue_max); |
1744 |
vs->clientds.pf.bshift = blue_shift; |
1745 |
vs->clientds.pf.bmask = blue_max << blue_shift; |
1746 |
vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
1747 |
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
1748 |
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
1749 |
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
1750 |
|
1751 |
set_pixel_conversion(vs); |
1752 |
|
1753 |
vga_hw_invalidate(); |
1754 |
vga_hw_update(); |
1755 |
} |
1756 |
|
1757 |
static void pixel_format_message (VncState *vs) { |
1758 |
char pad[3] = { 0, 0, 0 }; |
1759 |
|
1760 |
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
1761 |
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
1762 |
|
1763 |
#ifdef HOST_WORDS_BIGENDIAN
|
1764 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
1765 |
#else
|
1766 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
1767 |
#endif
|
1768 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
1769 |
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
1770 |
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
1771 |
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
1772 |
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
1773 |
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
1774 |
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
1775 |
|
1776 |
vnc_hextile_set_pixel_conversion(vs, 0);
|
1777 |
|
1778 |
vs->clientds = *(vs->ds->surface); |
1779 |
vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG; |
1780 |
vs->write_pixels = vnc_write_pixels_copy; |
1781 |
|
1782 |
vnc_write(vs, pad, 3); /* padding */ |
1783 |
} |
1784 |
|
1785 |
static void vnc_dpy_setdata(DisplayState *ds) |
1786 |
{ |
1787 |
/* We don't have to do anything */
|
1788 |
} |
1789 |
|
1790 |
static void vnc_colordepth(VncState *vs) |
1791 |
{ |
1792 |
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
1793 |
/* Sending a WMVi message to notify the client*/
|
1794 |
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
1795 |
vnc_write_u8(vs, 0);
|
1796 |
vnc_write_u16(vs, 1); /* number of rects */ |
1797 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
1798 |
ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
1799 |
pixel_format_message(vs); |
1800 |
vnc_flush(vs); |
1801 |
} else {
|
1802 |
set_pixel_conversion(vs); |
1803 |
} |
1804 |
} |
1805 |
|
1806 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
1807 |
{ |
1808 |
int i;
|
1809 |
uint16_t limit; |
1810 |
VncDisplay *vd = vs->vd; |
1811 |
|
1812 |
if (data[0] > 3) { |
1813 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
1814 |
if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
|
1815 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
1816 |
} |
1817 |
|
1818 |
switch (data[0]) { |
1819 |
case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
|
1820 |
if (len == 1) |
1821 |
return 20; |
1822 |
|
1823 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
1824 |
read_u8(data, 6), read_u8(data, 7), |
1825 |
read_u16(data, 8), read_u16(data, 10), |
1826 |
read_u16(data, 12), read_u8(data, 14), |
1827 |
read_u8(data, 15), read_u8(data, 16)); |
1828 |
break;
|
1829 |
case VNC_MSG_CLIENT_SET_ENCODINGS:
|
1830 |
if (len == 1) |
1831 |
return 4; |
1832 |
|
1833 |
if (len == 4) { |
1834 |
limit = read_u16(data, 2);
|
1835 |
if (limit > 0) |
1836 |
return 4 + (limit * 4); |
1837 |
} else
|
1838 |
limit = read_u16(data, 2);
|
1839 |
|
1840 |
for (i = 0; i < limit; i++) { |
1841 |
int32_t val = read_s32(data, 4 + (i * 4)); |
1842 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
1843 |
} |
1844 |
|
1845 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
1846 |
break;
|
1847 |
case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
|
1848 |
if (len == 1) |
1849 |
return 10; |
1850 |
|
1851 |
framebuffer_update_request(vs, |
1852 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
1853 |
read_u16(data, 6), read_u16(data, 8)); |
1854 |
break;
|
1855 |
case VNC_MSG_CLIENT_KEY_EVENT:
|
1856 |
if (len == 1) |
1857 |
return 8; |
1858 |
|
1859 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
1860 |
break;
|
1861 |
case VNC_MSG_CLIENT_POINTER_EVENT:
|
1862 |
if (len == 1) |
1863 |
return 6; |
1864 |
|
1865 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
1866 |
break;
|
1867 |
case VNC_MSG_CLIENT_CUT_TEXT:
|
1868 |
if (len == 1) |
1869 |
return 8; |
1870 |
|
1871 |
if (len == 8) { |
1872 |
uint32_t dlen = read_u32(data, 4);
|
1873 |
if (dlen > 0) |
1874 |
return 8 + dlen; |
1875 |
} |
1876 |
|
1877 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
1878 |
break;
|
1879 |
case VNC_MSG_CLIENT_QEMU:
|
1880 |
if (len == 1) |
1881 |
return 2; |
1882 |
|
1883 |
switch (read_u8(data, 1)) { |
1884 |
case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
|
1885 |
if (len == 2) |
1886 |
return 12; |
1887 |
|
1888 |
ext_key_event(vs, read_u16(data, 2),
|
1889 |
read_u32(data, 4), read_u32(data, 8)); |
1890 |
break;
|
1891 |
case VNC_MSG_CLIENT_QEMU_AUDIO:
|
1892 |
if (len == 2) |
1893 |
return 4; |
1894 |
|
1895 |
switch (read_u16 (data, 2)) { |
1896 |
case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
|
1897 |
audio_add(vs); |
1898 |
break;
|
1899 |
case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
|
1900 |
audio_del(vs); |
1901 |
break;
|
1902 |
case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
|
1903 |
if (len == 4) |
1904 |
return 10; |
1905 |
switch (read_u8(data, 4)) { |
1906 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
1907 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
1908 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
1909 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
1910 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
1911 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
1912 |
default:
|
1913 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
1914 |
vnc_client_error(vs); |
1915 |
break;
|
1916 |
} |
1917 |
vs->as.nchannels = read_u8(data, 5);
|
1918 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
1919 |
printf("Invalid audio channel coount %d\n",
|
1920 |
read_u8(data, 5));
|
1921 |
vnc_client_error(vs); |
1922 |
break;
|
1923 |
} |
1924 |
vs->as.freq = read_u32(data, 6);
|
1925 |
break;
|
1926 |
default:
|
1927 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
1928 |
vnc_client_error(vs); |
1929 |
break;
|
1930 |
} |
1931 |
break;
|
1932 |
|
1933 |
default:
|
1934 |
printf("Msg: %d\n", read_u16(data, 0)); |
1935 |
vnc_client_error(vs); |
1936 |
break;
|
1937 |
} |
1938 |
break;
|
1939 |
default:
|
1940 |
printf("Msg: %d\n", data[0]); |
1941 |
vnc_client_error(vs); |
1942 |
break;
|
1943 |
} |
1944 |
|
1945 |
vnc_read_when(vs, protocol_client_msg, 1);
|
1946 |
return 0; |
1947 |
} |
1948 |
|
1949 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
1950 |
{ |
1951 |
char buf[1024]; |
1952 |
int size;
|
1953 |
|
1954 |
vs->client_width = ds_get_width(vs->ds); |
1955 |
vs->client_height = ds_get_height(vs->ds); |
1956 |
vnc_write_u16(vs, vs->client_width); |
1957 |
vnc_write_u16(vs, vs->client_height); |
1958 |
|
1959 |
pixel_format_message(vs); |
1960 |
|
1961 |
if (qemu_name)
|
1962 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
1963 |
else
|
1964 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
1965 |
|
1966 |
vnc_write_u32(vs, size); |
1967 |
vnc_write(vs, buf, size); |
1968 |
vnc_flush(vs); |
1969 |
|
1970 |
vnc_client_cache_auth(vs); |
1971 |
vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED); |
1972 |
|
1973 |
vnc_read_when(vs, protocol_client_msg, 1);
|
1974 |
|
1975 |
return 0; |
1976 |
} |
1977 |
|
1978 |
void start_client_init(VncState *vs)
|
1979 |
{ |
1980 |
vnc_read_when(vs, protocol_client_init, 1);
|
1981 |
} |
1982 |
|
1983 |
static void make_challenge(VncState *vs) |
1984 |
{ |
1985 |
int i;
|
1986 |
|
1987 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
1988 |
|
1989 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
1990 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
1991 |
} |
1992 |
|
1993 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
1994 |
{ |
1995 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
1996 |
int i, j, pwlen;
|
1997 |
unsigned char key[8]; |
1998 |
|
1999 |
if (!vs->vd->password || !vs->vd->password[0]) { |
2000 |
VNC_DEBUG("No password configured on server");
|
2001 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2002 |
if (vs->minor >= 8) { |
2003 |
static const char err[] = "Authentication failed"; |
2004 |
vnc_write_u32(vs, sizeof(err));
|
2005 |
vnc_write(vs, err, sizeof(err));
|
2006 |
} |
2007 |
vnc_flush(vs); |
2008 |
vnc_client_error(vs); |
2009 |
return 0; |
2010 |
} |
2011 |
|
2012 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
2013 |
|
2014 |
/* Calculate the expected challenge response */
|
2015 |
pwlen = strlen(vs->vd->password); |
2016 |
for (i=0; i<sizeof(key); i++) |
2017 |
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
2018 |
deskey(key, EN0); |
2019 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
2020 |
des(response+j, response+j); |
2021 |
|
2022 |
/* Compare expected vs actual challenge response */
|
2023 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
2024 |
VNC_DEBUG("Client challenge reponse did not match\n");
|
2025 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2026 |
if (vs->minor >= 8) { |
2027 |
static const char err[] = "Authentication failed"; |
2028 |
vnc_write_u32(vs, sizeof(err));
|
2029 |
vnc_write(vs, err, sizeof(err));
|
2030 |
} |
2031 |
vnc_flush(vs); |
2032 |
vnc_client_error(vs); |
2033 |
} else {
|
2034 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
2035 |
vnc_write_u32(vs, 0); /* Accept auth */ |
2036 |
vnc_flush(vs); |
2037 |
|
2038 |
start_client_init(vs); |
2039 |
} |
2040 |
return 0; |
2041 |
} |
2042 |
|
2043 |
void start_auth_vnc(VncState *vs)
|
2044 |
{ |
2045 |
make_challenge(vs); |
2046 |
/* Send client a 'random' challenge */
|
2047 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
2048 |
vnc_flush(vs); |
2049 |
|
2050 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
2051 |
} |
2052 |
|
2053 |
|
2054 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
2055 |
{ |
2056 |
/* We only advertise 1 auth scheme at a time, so client
|
2057 |
* must pick the one we sent. Verify this */
|
2058 |
if (data[0] != vs->vd->auth) { /* Reject auth */ |
2059 |
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
2060 |
vnc_write_u32(vs, 1);
|
2061 |
if (vs->minor >= 8) { |
2062 |
static const char err[] = "Authentication failed"; |
2063 |
vnc_write_u32(vs, sizeof(err));
|
2064 |
vnc_write(vs, err, sizeof(err));
|
2065 |
} |
2066 |
vnc_client_error(vs); |
2067 |
} else { /* Accept requested auth */ |
2068 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
2069 |
switch (vs->vd->auth) {
|
2070 |
case VNC_AUTH_NONE:
|
2071 |
VNC_DEBUG("Accept auth none\n");
|
2072 |
if (vs->minor >= 8) { |
2073 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
2074 |
vnc_flush(vs); |
2075 |
} |
2076 |
start_client_init(vs); |
2077 |
break;
|
2078 |
|
2079 |
case VNC_AUTH_VNC:
|
2080 |
VNC_DEBUG("Start VNC auth\n");
|
2081 |
start_auth_vnc(vs); |
2082 |
break;
|
2083 |
|
2084 |
#ifdef CONFIG_VNC_TLS
|
2085 |
case VNC_AUTH_VENCRYPT:
|
2086 |
VNC_DEBUG("Accept VeNCrypt auth\n");;
|
2087 |
start_auth_vencrypt(vs); |
2088 |
break;
|
2089 |
#endif /* CONFIG_VNC_TLS */ |
2090 |
|
2091 |
#ifdef CONFIG_VNC_SASL
|
2092 |
case VNC_AUTH_SASL:
|
2093 |
VNC_DEBUG("Accept SASL auth\n");
|
2094 |
start_auth_sasl(vs); |
2095 |
break;
|
2096 |
#endif /* CONFIG_VNC_SASL */ |
2097 |
|
2098 |
default: /* Should not be possible, but just in case */ |
2099 |
VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
|
2100 |
vnc_write_u8(vs, 1);
|
2101 |
if (vs->minor >= 8) { |
2102 |
static const char err[] = "Authentication failed"; |
2103 |
vnc_write_u32(vs, sizeof(err));
|
2104 |
vnc_write(vs, err, sizeof(err));
|
2105 |
} |
2106 |
vnc_client_error(vs); |
2107 |
} |
2108 |
} |
2109 |
return 0; |
2110 |
} |
2111 |
|
2112 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
2113 |
{ |
2114 |
char local[13]; |
2115 |
|
2116 |
memcpy(local, version, 12);
|
2117 |
local[12] = 0; |
2118 |
|
2119 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
2120 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
2121 |
vnc_client_error(vs); |
2122 |
return 0; |
2123 |
} |
2124 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
2125 |
if (vs->major != 3 || |
2126 |
(vs->minor != 3 &&
|
2127 |
vs->minor != 4 &&
|
2128 |
vs->minor != 5 &&
|
2129 |
vs->minor != 7 &&
|
2130 |
vs->minor != 8)) {
|
2131 |
VNC_DEBUG("Unsupported client version\n");
|
2132 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2133 |
vnc_flush(vs); |
2134 |
vnc_client_error(vs); |
2135 |
return 0; |
2136 |
} |
2137 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
2138 |
* as equivalent to v3.3 by servers
|
2139 |
*/
|
2140 |
if (vs->minor == 4 || vs->minor == 5) |
2141 |
vs->minor = 3;
|
2142 |
|
2143 |
if (vs->minor == 3) { |
2144 |
if (vs->vd->auth == VNC_AUTH_NONE) {
|
2145 |
VNC_DEBUG("Tell client auth none\n");
|
2146 |
vnc_write_u32(vs, vs->vd->auth); |
2147 |
vnc_flush(vs); |
2148 |
start_client_init(vs); |
2149 |
} else if (vs->vd->auth == VNC_AUTH_VNC) { |
2150 |
VNC_DEBUG("Tell client VNC auth\n");
|
2151 |
vnc_write_u32(vs, vs->vd->auth); |
2152 |
vnc_flush(vs); |
2153 |
start_auth_vnc(vs); |
2154 |
} else {
|
2155 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
|
2156 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2157 |
vnc_flush(vs); |
2158 |
vnc_client_error(vs); |
2159 |
} |
2160 |
} else {
|
2161 |
VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
|
2162 |
vnc_write_u8(vs, 1); /* num auth */ |
2163 |
vnc_write_u8(vs, vs->vd->auth); |
2164 |
vnc_read_when(vs, protocol_client_auth, 1);
|
2165 |
vnc_flush(vs); |
2166 |
} |
2167 |
|
2168 |
return 0; |
2169 |
} |
2170 |
|
2171 |
static int vnc_refresh_server_surface(VncDisplay *vd) |
2172 |
{ |
2173 |
int y;
|
2174 |
uint8_t *guest_row; |
2175 |
uint8_t *server_row; |
2176 |
int cmp_bytes;
|
2177 |
uint32_t width_mask[VNC_DIRTY_WORDS]; |
2178 |
VncState *vs; |
2179 |
int has_dirty = 0; |
2180 |
|
2181 |
/*
|
2182 |
* Walk through the guest dirty map.
|
2183 |
* Check and copy modified bits from guest to server surface.
|
2184 |
* Update server dirty map.
|
2185 |
*/
|
2186 |
vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
|
2187 |
cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
|
2188 |
guest_row = vd->guest.ds->data; |
2189 |
server_row = vd->server->data; |
2190 |
for (y = 0; y < vd->guest.ds->height; y++) { |
2191 |
if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
|
2192 |
int x;
|
2193 |
uint8_t *guest_ptr; |
2194 |
uint8_t *server_ptr; |
2195 |
|
2196 |
guest_ptr = guest_row; |
2197 |
server_ptr = server_row; |
2198 |
|
2199 |
for (x = 0; x < vd->guest.ds->width; |
2200 |
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
2201 |
if (!vnc_get_bit(vd->guest.dirty[y], (x / 16))) |
2202 |
continue;
|
2203 |
vnc_clear_bit(vd->guest.dirty[y], (x / 16));
|
2204 |
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
2205 |
continue;
|
2206 |
memcpy(server_ptr, guest_ptr, cmp_bytes); |
2207 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
2208 |
vnc_set_bit(vs->dirty[y], (x / 16));
|
2209 |
} |
2210 |
has_dirty++; |
2211 |
} |
2212 |
} |
2213 |
guest_row += ds_get_linesize(vd->ds); |
2214 |
server_row += ds_get_linesize(vd->ds); |
2215 |
} |
2216 |
return has_dirty;
|
2217 |
} |
2218 |
|
2219 |
static void vnc_refresh(void *opaque) |
2220 |
{ |
2221 |
VncDisplay *vd = opaque; |
2222 |
VncState *vs, *vn; |
2223 |
int has_dirty, rects = 0; |
2224 |
|
2225 |
vga_hw_update(); |
2226 |
|
2227 |
has_dirty = vnc_refresh_server_surface(vd); |
2228 |
|
2229 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
2230 |
rects += vnc_update_client(vs, has_dirty); |
2231 |
/* vs might be free()ed here */
|
2232 |
} |
2233 |
/* vd->timer could be NULL now if the last client disconnected,
|
2234 |
* in this case don't update the timer */
|
2235 |
if (vd->timer == NULL) |
2236 |
return;
|
2237 |
|
2238 |
if (has_dirty && rects) {
|
2239 |
vd->timer_interval /= 2;
|
2240 |
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
2241 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2242 |
} else {
|
2243 |
vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
2244 |
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
2245 |
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
2246 |
} |
2247 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
2248 |
} |
2249 |
|
2250 |
static void vnc_init_timer(VncDisplay *vd) |
2251 |
{ |
2252 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2253 |
if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) { |
2254 |
vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd); |
2255 |
vnc_refresh(vd); |
2256 |
} |
2257 |
} |
2258 |
|
2259 |
static void vnc_remove_timer(VncDisplay *vd) |
2260 |
{ |
2261 |
if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) { |
2262 |
qemu_del_timer(vd->timer); |
2263 |
qemu_free_timer(vd->timer); |
2264 |
vd->timer = NULL;
|
2265 |
} |
2266 |
} |
2267 |
|
2268 |
static void vnc_connect(VncDisplay *vd, int csock) |
2269 |
{ |
2270 |
VncState *vs = qemu_mallocz(sizeof(VncState));
|
2271 |
vs->csock = csock; |
2272 |
|
2273 |
VNC_DEBUG("New client on socket %d\n", csock);
|
2274 |
dcl->idle = 0;
|
2275 |
socket_set_nonblock(vs->csock); |
2276 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
2277 |
|
2278 |
vnc_client_cache_addr(vs); |
2279 |
vnc_qmp_event(vs, QEVENT_VNC_CONNECTED); |
2280 |
|
2281 |
vs->vd = vd; |
2282 |
vs->ds = vd->ds; |
2283 |
vs->last_x = -1;
|
2284 |
vs->last_y = -1;
|
2285 |
|
2286 |
vs->as.freq = 44100;
|
2287 |
vs->as.nchannels = 2;
|
2288 |
vs->as.fmt = AUD_FMT_S16; |
2289 |
vs->as.endianness = 0;
|
2290 |
|
2291 |
QTAILQ_INSERT_HEAD(&vd->clients, vs, next); |
2292 |
|
2293 |
vga_hw_update(); |
2294 |
|
2295 |
vnc_write(vs, "RFB 003.008\n", 12); |
2296 |
vnc_flush(vs); |
2297 |
vnc_read_when(vs, protocol_version, 12);
|
2298 |
reset_keys(vs); |
2299 |
if (vs->vd->lock_key_sync)
|
2300 |
vs->led = qemu_add_led_event_handler(kbd_leds, vs); |
2301 |
|
2302 |
vs->mouse_mode_notifier.notify = check_pointer_type_change; |
2303 |
qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
2304 |
|
2305 |
vnc_init_timer(vd); |
2306 |
|
2307 |
/* vs might be free()ed here */
|
2308 |
} |
2309 |
|
2310 |
static void vnc_listen_read(void *opaque) |
2311 |
{ |
2312 |
VncDisplay *vs = opaque; |
2313 |
struct sockaddr_in addr;
|
2314 |
socklen_t addrlen = sizeof(addr);
|
2315 |
|
2316 |
/* Catch-up */
|
2317 |
vga_hw_update(); |
2318 |
|
2319 |
int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
2320 |
if (csock != -1) { |
2321 |
vnc_connect(vs, csock); |
2322 |
} |
2323 |
} |
2324 |
|
2325 |
void vnc_display_init(DisplayState *ds)
|
2326 |
{ |
2327 |
VncDisplay *vs = qemu_mallocz(sizeof(*vs));
|
2328 |
|
2329 |
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
|
2330 |
|
2331 |
ds->opaque = vs; |
2332 |
dcl->idle = 1;
|
2333 |
vnc_display = vs; |
2334 |
|
2335 |
vs->lsock = -1;
|
2336 |
|
2337 |
vs->ds = ds; |
2338 |
QTAILQ_INIT(&vs->clients); |
2339 |
|
2340 |
if (keyboard_layout)
|
2341 |
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
2342 |
else
|
2343 |
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
2344 |
|
2345 |
if (!vs->kbd_layout)
|
2346 |
exit(1);
|
2347 |
|
2348 |
dcl->dpy_copy = vnc_dpy_copy; |
2349 |
dcl->dpy_update = vnc_dpy_update; |
2350 |
dcl->dpy_resize = vnc_dpy_resize; |
2351 |
dcl->dpy_setdata = vnc_dpy_setdata; |
2352 |
register_displaychangelistener(ds, dcl); |
2353 |
ds->mouse_set = vnc_mouse_set; |
2354 |
ds->cursor_define = vnc_dpy_cursor_define; |
2355 |
} |
2356 |
|
2357 |
|
2358 |
void vnc_display_close(DisplayState *ds)
|
2359 |
{ |
2360 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2361 |
|
2362 |
if (!vs)
|
2363 |
return;
|
2364 |
if (vs->display) {
|
2365 |
qemu_free(vs->display); |
2366 |
vs->display = NULL;
|
2367 |
} |
2368 |
if (vs->lsock != -1) { |
2369 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
2370 |
close(vs->lsock); |
2371 |
vs->lsock = -1;
|
2372 |
} |
2373 |
vs->auth = VNC_AUTH_INVALID; |
2374 |
#ifdef CONFIG_VNC_TLS
|
2375 |
vs->subauth = VNC_AUTH_INVALID; |
2376 |
vs->tls.x509verify = 0;
|
2377 |
#endif
|
2378 |
} |
2379 |
|
2380 |
int vnc_display_password(DisplayState *ds, const char *password) |
2381 |
{ |
2382 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2383 |
|
2384 |
if (!vs) {
|
2385 |
return -1; |
2386 |
} |
2387 |
|
2388 |
if (vs->password) {
|
2389 |
qemu_free(vs->password); |
2390 |
vs->password = NULL;
|
2391 |
} |
2392 |
if (password && password[0]) { |
2393 |
if (!(vs->password = qemu_strdup(password)))
|
2394 |
return -1; |
2395 |
if (vs->auth == VNC_AUTH_NONE) {
|
2396 |
vs->auth = VNC_AUTH_VNC; |
2397 |
} |
2398 |
} else {
|
2399 |
vs->auth = VNC_AUTH_NONE; |
2400 |
} |
2401 |
|
2402 |
return 0; |
2403 |
} |
2404 |
|
2405 |
char *vnc_display_local_addr(DisplayState *ds)
|
2406 |
{ |
2407 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2408 |
|
2409 |
return vnc_socket_local_addr("%s:%s", vs->lsock); |
2410 |
} |
2411 |
|
2412 |
int vnc_display_open(DisplayState *ds, const char *display) |
2413 |
{ |
2414 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2415 |
const char *options; |
2416 |
int password = 0; |
2417 |
int reverse = 0; |
2418 |
#ifdef CONFIG_VNC_TLS
|
2419 |
int tls = 0, x509 = 0; |
2420 |
#endif
|
2421 |
#ifdef CONFIG_VNC_SASL
|
2422 |
int sasl = 0; |
2423 |
int saslErr;
|
2424 |
#endif
|
2425 |
int acl = 0; |
2426 |
int lock_key_sync = 1; |
2427 |
|
2428 |
if (!vnc_display)
|
2429 |
return -1; |
2430 |
vnc_display_close(ds); |
2431 |
if (strcmp(display, "none") == 0) |
2432 |
return 0; |
2433 |
|
2434 |
if (!(vs->display = strdup(display)))
|
2435 |
return -1; |
2436 |
|
2437 |
options = display; |
2438 |
while ((options = strchr(options, ','))) { |
2439 |
options++; |
2440 |
if (strncmp(options, "password", 8) == 0) { |
2441 |
password = 1; /* Require password auth */ |
2442 |
} else if (strncmp(options, "reverse", 7) == 0) { |
2443 |
reverse = 1;
|
2444 |
} else if (strncmp(options, "no-lock-key-sync", 9) == 0) { |
2445 |
lock_key_sync = 0;
|
2446 |
#ifdef CONFIG_VNC_SASL
|
2447 |
} else if (strncmp(options, "sasl", 4) == 0) { |
2448 |
sasl = 1; /* Require SASL auth */ |
2449 |
#endif
|
2450 |
#ifdef CONFIG_VNC_TLS
|
2451 |
} else if (strncmp(options, "tls", 3) == 0) { |
2452 |
tls = 1; /* Require TLS */ |
2453 |
} else if (strncmp(options, "x509", 4) == 0) { |
2454 |
char *start, *end;
|
2455 |
x509 = 1; /* Require x509 certificates */ |
2456 |
if (strncmp(options, "x509verify", 10) == 0) |
2457 |
vs->tls.x509verify = 1; /* ...and verify client certs */ |
2458 |
|
2459 |
/* Now check for 'x509=/some/path' postfix
|
2460 |
* and use that to setup x509 certificate/key paths */
|
2461 |
start = strchr(options, '=');
|
2462 |
end = strchr(options, ',');
|
2463 |
if (start && (!end || (start < end))) {
|
2464 |
int len = end ? end-(start+1) : strlen(start+1); |
2465 |
char *path = qemu_strndup(start + 1, len); |
2466 |
|
2467 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
2468 |
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
2469 |
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
2470 |
qemu_free(path); |
2471 |
qemu_free(vs->display); |
2472 |
vs->display = NULL;
|
2473 |
return -1; |
2474 |
} |
2475 |
qemu_free(path); |
2476 |
} else {
|
2477 |
fprintf(stderr, "No certificate path provided\n");
|
2478 |
qemu_free(vs->display); |
2479 |
vs->display = NULL;
|
2480 |
return -1; |
2481 |
} |
2482 |
#endif
|
2483 |
} else if (strncmp(options, "acl", 3) == 0) { |
2484 |
acl = 1;
|
2485 |
} else if (strncmp(options, "lossy", 5) == 0) { |
2486 |
vs->lossy = true;
|
2487 |
} |
2488 |
} |
2489 |
|
2490 |
#ifdef CONFIG_VNC_TLS
|
2491 |
if (acl && x509 && vs->tls.x509verify) {
|
2492 |
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
2493 |
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
2494 |
exit(1);
|
2495 |
} |
2496 |
} |
2497 |
#endif
|
2498 |
#ifdef CONFIG_VNC_SASL
|
2499 |
if (acl && sasl) {
|
2500 |
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
2501 |
fprintf(stderr, "Failed to create username ACL\n");
|
2502 |
exit(1);
|
2503 |
} |
2504 |
} |
2505 |
#endif
|
2506 |
|
2507 |
/*
|
2508 |
* Combinations we support here:
|
2509 |
*
|
2510 |
* - no-auth (clear text, no auth)
|
2511 |
* - password (clear text, weak auth)
|
2512 |
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
2513 |
* - tls (encrypt, weak anonymous creds, no auth)
|
2514 |
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
2515 |
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
2516 |
* - tls + x509 (encrypt, good x509 creds, no auth)
|
2517 |
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
2518 |
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
2519 |
*
|
2520 |
* NB1. TLS is a stackable auth scheme.
|
2521 |
* NB2. the x509 schemes have option to validate a client cert dname
|
2522 |
*/
|
2523 |
if (password) {
|
2524 |
#ifdef CONFIG_VNC_TLS
|
2525 |
if (tls) {
|
2526 |
vs->auth = VNC_AUTH_VENCRYPT; |
2527 |
if (x509) {
|
2528 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
2529 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
2530 |
} else {
|
2531 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
2532 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
2533 |
} |
2534 |
} else {
|
2535 |
#endif /* CONFIG_VNC_TLS */ |
2536 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
2537 |
vs->auth = VNC_AUTH_VNC; |
2538 |
#ifdef CONFIG_VNC_TLS
|
2539 |
vs->subauth = VNC_AUTH_INVALID; |
2540 |
} |
2541 |
#endif /* CONFIG_VNC_TLS */ |
2542 |
#ifdef CONFIG_VNC_SASL
|
2543 |
} else if (sasl) { |
2544 |
#ifdef CONFIG_VNC_TLS
|
2545 |
if (tls) {
|
2546 |
vs->auth = VNC_AUTH_VENCRYPT; |
2547 |
if (x509) {
|
2548 |
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
2549 |
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
2550 |
} else {
|
2551 |
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
2552 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
2553 |
} |
2554 |
} else {
|
2555 |
#endif /* CONFIG_VNC_TLS */ |
2556 |
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
2557 |
vs->auth = VNC_AUTH_SASL; |
2558 |
#ifdef CONFIG_VNC_TLS
|
2559 |
vs->subauth = VNC_AUTH_INVALID; |
2560 |
} |
2561 |
#endif /* CONFIG_VNC_TLS */ |
2562 |
#endif /* CONFIG_VNC_SASL */ |
2563 |
} else {
|
2564 |
#ifdef CONFIG_VNC_TLS
|
2565 |
if (tls) {
|
2566 |
vs->auth = VNC_AUTH_VENCRYPT; |
2567 |
if (x509) {
|
2568 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
2569 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
2570 |
} else {
|
2571 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
2572 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
2573 |
} |
2574 |
} else {
|
2575 |
#endif
|
2576 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
2577 |
vs->auth = VNC_AUTH_NONE; |
2578 |
#ifdef CONFIG_VNC_TLS
|
2579 |
vs->subauth = VNC_AUTH_INVALID; |
2580 |
} |
2581 |
#endif
|
2582 |
} |
2583 |
|
2584 |
#ifdef CONFIG_VNC_SASL
|
2585 |
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
2586 |
fprintf(stderr, "Failed to initialize SASL auth %s",
|
2587 |
sasl_errstring(saslErr, NULL, NULL)); |
2588 |
free(vs->display); |
2589 |
vs->display = NULL;
|
2590 |
return -1; |
2591 |
} |
2592 |
#endif
|
2593 |
vs->lock_key_sync = lock_key_sync; |
2594 |
|
2595 |
if (reverse) {
|
2596 |
/* connect to viewer */
|
2597 |
if (strncmp(display, "unix:", 5) == 0) |
2598 |
vs->lsock = unix_connect(display+5);
|
2599 |
else
|
2600 |
vs->lsock = inet_connect(display, SOCK_STREAM); |
2601 |
if (-1 == vs->lsock) { |
2602 |
free(vs->display); |
2603 |
vs->display = NULL;
|
2604 |
return -1; |
2605 |
} else {
|
2606 |
int csock = vs->lsock;
|
2607 |
vs->lsock = -1;
|
2608 |
vnc_connect(vs, csock); |
2609 |
} |
2610 |
return 0; |
2611 |
|
2612 |
} else {
|
2613 |
/* listen for connects */
|
2614 |
char *dpy;
|
2615 |
dpy = qemu_malloc(256);
|
2616 |
if (strncmp(display, "unix:", 5) == 0) { |
2617 |
pstrcpy(dpy, 256, "unix:"); |
2618 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
2619 |
} else {
|
2620 |
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900); |
2621 |
} |
2622 |
if (-1 == vs->lsock) { |
2623 |
free(dpy); |
2624 |
return -1; |
2625 |
} else {
|
2626 |
free(vs->display); |
2627 |
vs->display = dpy; |
2628 |
} |
2629 |
} |
2630 |
return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
2631 |
} |