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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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#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 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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/**
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* do_info_vnc(): Show VNC server information
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*
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* Return a QDict with server information. Connected clients are returned
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* as a QList of QDicts.
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*
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* The main QDict contains the following:
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*
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* - "enabled": true or false
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* - "host": server's IP address
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* - "family": address family ("ipv4" or "ipv6")
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* - "service": server's port number
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* - "auth": authentication method
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* - "clients": a QList of all connected clients
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*
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* Clients are described by a QDict, with the following information:
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*
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* - "host": client's IP address
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* - "family": address family ("ipv4" or "ipv6")
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* - "service": client's port number
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* - "x509_dname": TLS dname (optional)
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* - "sasl_username": SASL username (optional)
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*
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* Example:
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*
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* { "enabled": true, "host": "0.0.0.0", "service": "50402", "auth": "vnc",
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* "family": "ipv4",
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* "clients": [{ "host": "127.0.0.1", "service": "50401", "family": "ipv4" }]}
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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; |
360 |
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clist = qlist_new(); |
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QTAILQ_FOREACH(client, &vnc_display->clients, next) { |
363 |
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); |
366 |
qlist_append_obj(clist, client->info); |
367 |
} |
368 |
} |
369 |
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*ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }",
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QOBJECT(clist)); |
372 |
assert(*ret_data != NULL);
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|
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if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) { |
375 |
qobject_decref(*ret_data); |
376 |
*ret_data = NULL;
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} |
378 |
} |
379 |
} |
380 |
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381 |
static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
382 |
return (vs->features & (1 << feature)); |
383 |
} |
384 |
|
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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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*/
|
391 |
|
392 |
static int vnc_update_client(VncState *vs, int has_dirty); |
393 |
static void vnc_disconnect_start(VncState *vs); |
394 |
static void vnc_disconnect_finish(VncState *vs); |
395 |
static void vnc_init_timer(VncDisplay *vd); |
396 |
static void vnc_remove_timer(VncDisplay *vd); |
397 |
|
398 |
static void vnc_colordepth(VncState *vs); |
399 |
static void framebuffer_update_request(VncState *vs, int incremental, |
400 |
int x_position, int y_position, |
401 |
int w, int h); |
402 |
static void vnc_refresh(void *opaque); |
403 |
static int vnc_refresh_server_surface(VncDisplay *vd); |
404 |
|
405 |
static inline void vnc_set_bit(uint32_t *d, int k) |
406 |
{ |
407 |
d[k >> 5] |= 1 << (k & 0x1f); |
408 |
} |
409 |
|
410 |
static inline void vnc_clear_bit(uint32_t *d, int k) |
411 |
{ |
412 |
d[k >> 5] &= ~(1 << (k & 0x1f)); |
413 |
} |
414 |
|
415 |
static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) |
416 |
{ |
417 |
int j;
|
418 |
|
419 |
j = 0;
|
420 |
while (n >= 32) { |
421 |
d[j++] = -1;
|
422 |
n -= 32;
|
423 |
} |
424 |
if (n > 0) |
425 |
d[j++] = (1 << n) - 1; |
426 |
while (j < nb_words)
|
427 |
d[j++] = 0;
|
428 |
} |
429 |
|
430 |
static inline int vnc_get_bit(const uint32_t *d, int k) |
431 |
{ |
432 |
return (d[k >> 5] >> (k & 0x1f)) & 1; |
433 |
} |
434 |
|
435 |
static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, |
436 |
int nb_words)
|
437 |
{ |
438 |
int i;
|
439 |
for(i = 0; i < nb_words; i++) { |
440 |
if ((d1[i] & d2[i]) != 0) |
441 |
return 1; |
442 |
} |
443 |
return 0; |
444 |
} |
445 |
|
446 |
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
447 |
{ |
448 |
int i;
|
449 |
VncDisplay *vd = ds->opaque; |
450 |
struct VncSurface *s = &vd->guest;
|
451 |
|
452 |
h += y; |
453 |
|
454 |
/* round x down to ensure the loop only spans one 16-pixel block per,
|
455 |
iteration. otherwise, if (x % 16) != 0, the last iteration may span
|
456 |
two 16-pixel blocks but we only mark the first as dirty
|
457 |
*/
|
458 |
w += (x % 16);
|
459 |
x -= (x % 16);
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460 |
|
461 |
x = MIN(x, s->ds->width); |
462 |
y = MIN(y, s->ds->height); |
463 |
w = MIN(x + w, s->ds->width) - x; |
464 |
h = MIN(h, s->ds->height); |
465 |
|
466 |
for (; y < h; y++)
|
467 |
for (i = 0; i < w; i += 16) |
468 |
vnc_set_bit(s->dirty[y], (x + i) / 16);
|
469 |
} |
470 |
|
471 |
static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
472 |
int32_t encoding) |
473 |
{ |
474 |
vnc_write_u16(vs, x); |
475 |
vnc_write_u16(vs, y); |
476 |
vnc_write_u16(vs, w); |
477 |
vnc_write_u16(vs, h); |
478 |
|
479 |
vnc_write_s32(vs, encoding); |
480 |
} |
481 |
|
482 |
void buffer_reserve(Buffer *buffer, size_t len)
|
483 |
{ |
484 |
if ((buffer->capacity - buffer->offset) < len) {
|
485 |
buffer->capacity += (len + 1024);
|
486 |
buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity); |
487 |
if (buffer->buffer == NULL) { |
488 |
fprintf(stderr, "vnc: out of memory\n");
|
489 |
exit(1);
|
490 |
} |
491 |
} |
492 |
} |
493 |
|
494 |
int buffer_empty(Buffer *buffer)
|
495 |
{ |
496 |
return buffer->offset == 0; |
497 |
} |
498 |
|
499 |
uint8_t *buffer_end(Buffer *buffer) |
500 |
{ |
501 |
return buffer->buffer + buffer->offset;
|
502 |
} |
503 |
|
504 |
void buffer_reset(Buffer *buffer)
|
505 |
{ |
506 |
buffer->offset = 0;
|
507 |
} |
508 |
|
509 |
void buffer_append(Buffer *buffer, const void *data, size_t len) |
510 |
{ |
511 |
memcpy(buffer->buffer + buffer->offset, data, len); |
512 |
buffer->offset += len; |
513 |
} |
514 |
|
515 |
static void vnc_dpy_resize(DisplayState *ds) |
516 |
{ |
517 |
int size_changed;
|
518 |
VncDisplay *vd = ds->opaque; |
519 |
VncState *vs; |
520 |
|
521 |
/* server surface */
|
522 |
if (!vd->server)
|
523 |
vd->server = qemu_mallocz(sizeof(*vd->server));
|
524 |
if (vd->server->data)
|
525 |
qemu_free(vd->server->data); |
526 |
*(vd->server) = *(ds->surface); |
527 |
vd->server->data = qemu_mallocz(vd->server->linesize * |
528 |
vd->server->height); |
529 |
|
530 |
/* guest surface */
|
531 |
if (!vd->guest.ds)
|
532 |
vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
|
533 |
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
534 |
console_color_init(ds); |
535 |
size_changed = ds_get_width(ds) != vd->guest.ds->width || |
536 |
ds_get_height(ds) != vd->guest.ds->height; |
537 |
*(vd->guest.ds) = *(ds->surface); |
538 |
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
539 |
|
540 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
541 |
vnc_colordepth(vs); |
542 |
if (size_changed) {
|
543 |
if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
544 |
vnc_write_u8(vs, 0); /* msg id */ |
545 |
vnc_write_u8(vs, 0);
|
546 |
vnc_write_u16(vs, 1); /* number of rects */ |
547 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds), |
548 |
VNC_ENCODING_DESKTOPRESIZE); |
549 |
vnc_flush(vs); |
550 |
} |
551 |
} |
552 |
memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
553 |
} |
554 |
} |
555 |
|
556 |
/* fastest code */
|
557 |
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size) |
558 |
{ |
559 |
vnc_write(vs, pixels, size); |
560 |
} |
561 |
|
562 |
/* slowest but generic code. */
|
563 |
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) |
564 |
{ |
565 |
uint8_t r, g, b; |
566 |
VncDisplay *vd = vs->vd; |
567 |
|
568 |
r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >> |
569 |
vd->server->pf.rbits); |
570 |
g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >> |
571 |
vd->server->pf.gbits); |
572 |
b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >> |
573 |
vd->server->pf.bbits); |
574 |
v = (r << vs->clientds.pf.rshift) | |
575 |
(g << vs->clientds.pf.gshift) | |
576 |
(b << vs->clientds.pf.bshift); |
577 |
switch(vs->clientds.pf.bytes_per_pixel) {
|
578 |
case 1: |
579 |
buf[0] = v;
|
580 |
break;
|
581 |
case 2: |
582 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
583 |
buf[0] = v >> 8; |
584 |
buf[1] = v;
|
585 |
} else {
|
586 |
buf[1] = v >> 8; |
587 |
buf[0] = v;
|
588 |
} |
589 |
break;
|
590 |
default:
|
591 |
case 4: |
592 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
593 |
buf[0] = v >> 24; |
594 |
buf[1] = v >> 16; |
595 |
buf[2] = v >> 8; |
596 |
buf[3] = v;
|
597 |
} else {
|
598 |
buf[3] = v >> 24; |
599 |
buf[2] = v >> 16; |
600 |
buf[1] = v >> 8; |
601 |
buf[0] = v;
|
602 |
} |
603 |
break;
|
604 |
} |
605 |
} |
606 |
|
607 |
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size) |
608 |
{ |
609 |
uint8_t buf[4];
|
610 |
VncDisplay *vd = vs->vd; |
611 |
|
612 |
if (vd->server->pf.bytes_per_pixel == 4) { |
613 |
uint32_t *pixels = pixels1; |
614 |
int n, i;
|
615 |
n = size >> 2;
|
616 |
for(i = 0; i < n; i++) { |
617 |
vnc_convert_pixel(vs, buf, pixels[i]); |
618 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
619 |
} |
620 |
} else if (vd->server->pf.bytes_per_pixel == 2) { |
621 |
uint16_t *pixels = pixels1; |
622 |
int n, i;
|
623 |
n = size >> 1;
|
624 |
for(i = 0; i < n; i++) { |
625 |
vnc_convert_pixel(vs, buf, pixels[i]); |
626 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
627 |
} |
628 |
} else if (vd->server->pf.bytes_per_pixel == 1) { |
629 |
uint8_t *pixels = pixels1; |
630 |
int n, i;
|
631 |
n = size; |
632 |
for(i = 0; i < n; i++) { |
633 |
vnc_convert_pixel(vs, buf, pixels[i]); |
634 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
635 |
} |
636 |
} else {
|
637 |
fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
|
638 |
} |
639 |
} |
640 |
|
641 |
static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h) |
642 |
{ |
643 |
int i;
|
644 |
uint8_t *row; |
645 |
VncDisplay *vd = vs->vd; |
646 |
|
647 |
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
648 |
for (i = 0; i < h; i++) { |
649 |
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds)); |
650 |
row += ds_get_linesize(vs->ds); |
651 |
} |
652 |
} |
653 |
|
654 |
static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h) |
655 |
{ |
656 |
ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F); |
657 |
ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F); |
658 |
} |
659 |
|
660 |
#define BPP 8 |
661 |
#include "vnchextile.h" |
662 |
#undef BPP
|
663 |
|
664 |
#define BPP 16 |
665 |
#include "vnchextile.h" |
666 |
#undef BPP
|
667 |
|
668 |
#define BPP 32 |
669 |
#include "vnchextile.h" |
670 |
#undef BPP
|
671 |
|
672 |
#define GENERIC
|
673 |
#define BPP 8 |
674 |
#include "vnchextile.h" |
675 |
#undef BPP
|
676 |
#undef GENERIC
|
677 |
|
678 |
#define GENERIC
|
679 |
#define BPP 16 |
680 |
#include "vnchextile.h" |
681 |
#undef BPP
|
682 |
#undef GENERIC
|
683 |
|
684 |
#define GENERIC
|
685 |
#define BPP 32 |
686 |
#include "vnchextile.h" |
687 |
#undef BPP
|
688 |
#undef GENERIC
|
689 |
|
690 |
static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h) |
691 |
{ |
692 |
int i, j;
|
693 |
int has_fg, has_bg;
|
694 |
uint8_t *last_fg, *last_bg; |
695 |
VncDisplay *vd = vs->vd; |
696 |
|
697 |
last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
698 |
last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
699 |
has_fg = has_bg = 0;
|
700 |
for (j = y; j < (y + h); j += 16) { |
701 |
for (i = x; i < (x + w); i += 16) { |
702 |
vs->send_hextile_tile(vs, i, j, |
703 |
MIN(16, x + w - i), MIN(16, y + h - j), |
704 |
last_bg, last_fg, &has_bg, &has_fg); |
705 |
} |
706 |
} |
707 |
free(last_fg); |
708 |
free(last_bg); |
709 |
|
710 |
} |
711 |
|
712 |
#define ZALLOC_ALIGNMENT 16 |
713 |
|
714 |
static void *zalloc(void *x, unsigned items, unsigned size) |
715 |
{ |
716 |
void *p;
|
717 |
|
718 |
size *= items; |
719 |
size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
720 |
|
721 |
p = qemu_mallocz(size); |
722 |
|
723 |
return (p);
|
724 |
} |
725 |
|
726 |
static void zfree(void *x, void *addr) |
727 |
{ |
728 |
qemu_free(addr); |
729 |
} |
730 |
|
731 |
static void vnc_zlib_init(VncState *vs) |
732 |
{ |
733 |
int i;
|
734 |
for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++) |
735 |
vs->zlib_stream[i].opaque = NULL;
|
736 |
} |
737 |
|
738 |
static void vnc_zlib_start(VncState *vs) |
739 |
{ |
740 |
buffer_reset(&vs->zlib); |
741 |
|
742 |
// make the output buffer be the zlib buffer, so we can compress it later
|
743 |
vs->zlib_tmp = vs->output; |
744 |
vs->output = vs->zlib; |
745 |
} |
746 |
|
747 |
static int vnc_zlib_stop(VncState *vs, int stream_id) |
748 |
{ |
749 |
z_streamp zstream = &vs->zlib_stream[stream_id]; |
750 |
int previous_out;
|
751 |
|
752 |
// switch back to normal output/zlib buffers
|
753 |
vs->zlib = vs->output; |
754 |
vs->output = vs->zlib_tmp; |
755 |
|
756 |
// compress the zlib buffer
|
757 |
|
758 |
// initialize the stream
|
759 |
// XXX need one stream per session
|
760 |
if (zstream->opaque != vs) {
|
761 |
int err;
|
762 |
|
763 |
VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
|
764 |
VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
|
765 |
zstream->zalloc = zalloc; |
766 |
zstream->zfree = zfree; |
767 |
|
768 |
err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS, |
769 |
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY); |
770 |
|
771 |
if (err != Z_OK) {
|
772 |
fprintf(stderr, "VNC: error initializing zlib\n");
|
773 |
return -1; |
774 |
} |
775 |
|
776 |
zstream->opaque = vs; |
777 |
} |
778 |
|
779 |
// XXX what to do if tight_compression changed in between?
|
780 |
|
781 |
// reserve memory in output buffer
|
782 |
buffer_reserve(&vs->output, vs->zlib.offset + 64);
|
783 |
|
784 |
// set pointers
|
785 |
zstream->next_in = vs->zlib.buffer; |
786 |
zstream->avail_in = vs->zlib.offset; |
787 |
zstream->next_out = vs->output.buffer + vs->output.offset; |
788 |
zstream->avail_out = vs->output.capacity - vs->output.offset; |
789 |
zstream->data_type = Z_BINARY; |
790 |
previous_out = zstream->total_out; |
791 |
|
792 |
// start encoding
|
793 |
if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
|
794 |
fprintf(stderr, "VNC: error during zlib compression\n");
|
795 |
return -1; |
796 |
} |
797 |
|
798 |
vs->output.offset = vs->output.capacity - zstream->avail_out; |
799 |
return zstream->total_out - previous_out;
|
800 |
} |
801 |
|
802 |
static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h) |
803 |
{ |
804 |
int old_offset, new_offset, bytes_written;
|
805 |
|
806 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB); |
807 |
|
808 |
// remember where we put in the follow-up size
|
809 |
old_offset = vs->output.offset; |
810 |
vnc_write_s32(vs, 0);
|
811 |
|
812 |
// compress the stream
|
813 |
vnc_zlib_start(vs); |
814 |
send_framebuffer_update_raw(vs, x, y, w, h); |
815 |
bytes_written = vnc_zlib_stop(vs, 0);
|
816 |
|
817 |
if (bytes_written == -1) |
818 |
return;
|
819 |
|
820 |
// hack in the size
|
821 |
new_offset = vs->output.offset; |
822 |
vs->output.offset = old_offset; |
823 |
vnc_write_u32(vs, bytes_written); |
824 |
vs->output.offset = new_offset; |
825 |
} |
826 |
|
827 |
static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
828 |
{ |
829 |
switch(vs->vnc_encoding) {
|
830 |
case VNC_ENCODING_ZLIB:
|
831 |
send_framebuffer_update_zlib(vs, x, y, w, h); |
832 |
break;
|
833 |
case VNC_ENCODING_HEXTILE:
|
834 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
835 |
send_framebuffer_update_hextile(vs, x, y, w, h); |
836 |
break;
|
837 |
default:
|
838 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
839 |
send_framebuffer_update_raw(vs, x, y, w, h); |
840 |
break;
|
841 |
} |
842 |
} |
843 |
|
844 |
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
845 |
{ |
846 |
/* send bitblit op to the vnc client */
|
847 |
vnc_write_u8(vs, 0); /* msg id */ |
848 |
vnc_write_u8(vs, 0);
|
849 |
vnc_write_u16(vs, 1); /* number of rects */ |
850 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
851 |
vnc_write_u16(vs, src_x); |
852 |
vnc_write_u16(vs, src_y); |
853 |
vnc_flush(vs); |
854 |
} |
855 |
|
856 |
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
857 |
{ |
858 |
VncDisplay *vd = ds->opaque; |
859 |
VncState *vs, *vn; |
860 |
uint8_t *src_row; |
861 |
uint8_t *dst_row; |
862 |
int i,x,y,pitch,depth,inc,w_lim,s;
|
863 |
int cmp_bytes;
|
864 |
|
865 |
vnc_refresh_server_surface(vd); |
866 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
867 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
868 |
vs->force_update = 1;
|
869 |
vnc_update_client(vs, 1);
|
870 |
/* vs might be free()ed here */
|
871 |
} |
872 |
} |
873 |
|
874 |
/* do bitblit op on the local surface too */
|
875 |
pitch = ds_get_linesize(vd->ds); |
876 |
depth = ds_get_bytes_per_pixel(vd->ds); |
877 |
src_row = vd->server->data + pitch * src_y + depth * src_x; |
878 |
dst_row = vd->server->data + pitch * dst_y + depth * dst_x; |
879 |
y = dst_y; |
880 |
inc = 1;
|
881 |
if (dst_y > src_y) {
|
882 |
/* copy backwards */
|
883 |
src_row += pitch * (h-1);
|
884 |
dst_row += pitch * (h-1);
|
885 |
pitch = -pitch; |
886 |
y = dst_y + h - 1;
|
887 |
inc = -1;
|
888 |
} |
889 |
w_lim = w - (16 - (dst_x % 16)); |
890 |
if (w_lim < 0) |
891 |
w_lim = w; |
892 |
else
|
893 |
w_lim = w - (w_lim % 16);
|
894 |
for (i = 0; i < h; i++) { |
895 |
for (x = 0; x <= w_lim; |
896 |
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) { |
897 |
if (x == w_lim) {
|
898 |
if ((s = w - w_lim) == 0) |
899 |
break;
|
900 |
} else if (!x) { |
901 |
s = (16 - (dst_x % 16)); |
902 |
s = MIN(s, w_lim); |
903 |
} else {
|
904 |
s = 16;
|
905 |
} |
906 |
cmp_bytes = s * depth; |
907 |
if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
908 |
continue;
|
909 |
memmove(dst_row, src_row, cmp_bytes); |
910 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
911 |
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
912 |
vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
|
913 |
} |
914 |
} |
915 |
} |
916 |
src_row += pitch - w * depth; |
917 |
dst_row += pitch - w * depth; |
918 |
y += inc; |
919 |
} |
920 |
|
921 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
922 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
923 |
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
924 |
} |
925 |
} |
926 |
} |
927 |
|
928 |
static int find_and_clear_dirty_height(struct VncState *vs, |
929 |
int y, int last_x, int x) |
930 |
{ |
931 |
int h;
|
932 |
VncDisplay *vd = vs->vd; |
933 |
|
934 |
for (h = 1; h < (vd->server->height - y); h++) { |
935 |
int tmp_x;
|
936 |
if (!vnc_get_bit(vs->dirty[y + h], last_x))
|
937 |
break;
|
938 |
for (tmp_x = last_x; tmp_x < x; tmp_x++)
|
939 |
vnc_clear_bit(vs->dirty[y + h], tmp_x); |
940 |
} |
941 |
|
942 |
return h;
|
943 |
} |
944 |
|
945 |
static int vnc_update_client(VncState *vs, int has_dirty) |
946 |
{ |
947 |
if (vs->need_update && vs->csock != -1) { |
948 |
VncDisplay *vd = vs->vd; |
949 |
int y;
|
950 |
int n_rectangles;
|
951 |
int saved_offset;
|
952 |
|
953 |
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
954 |
/* kernel send buffers are full -> drop frames to throttle */
|
955 |
return 0; |
956 |
|
957 |
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
958 |
return 0; |
959 |
|
960 |
/*
|
961 |
* Send screen updates to the vnc client using the server
|
962 |
* surface and server dirty map. guest surface updates
|
963 |
* happening in parallel don't disturb us, the next pass will
|
964 |
* send them to the client.
|
965 |
*/
|
966 |
n_rectangles = 0;
|
967 |
vnc_write_u8(vs, 0); /* msg id */ |
968 |
vnc_write_u8(vs, 0);
|
969 |
saved_offset = vs->output.offset; |
970 |
vnc_write_u16(vs, 0);
|
971 |
|
972 |
for (y = 0; y < vd->server->height; y++) { |
973 |
int x;
|
974 |
int last_x = -1; |
975 |
for (x = 0; x < vd->server->width / 16; x++) { |
976 |
if (vnc_get_bit(vs->dirty[y], x)) {
|
977 |
if (last_x == -1) { |
978 |
last_x = x; |
979 |
} |
980 |
vnc_clear_bit(vs->dirty[y], x); |
981 |
} else {
|
982 |
if (last_x != -1) { |
983 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
984 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
985 |
n_rectangles++; |
986 |
} |
987 |
last_x = -1;
|
988 |
} |
989 |
} |
990 |
if (last_x != -1) { |
991 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
992 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
993 |
n_rectangles++; |
994 |
} |
995 |
} |
996 |
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; |
997 |
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; |
998 |
vnc_flush(vs); |
999 |
vs->force_update = 0;
|
1000 |
return n_rectangles;
|
1001 |
} |
1002 |
|
1003 |
if (vs->csock == -1) |
1004 |
vnc_disconnect_finish(vs); |
1005 |
|
1006 |
return 0; |
1007 |
} |
1008 |
|
1009 |
/* audio */
|
1010 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
1011 |
{ |
1012 |
VncState *vs = opaque; |
1013 |
|
1014 |
switch (cmd) {
|
1015 |
case AUD_CNOTIFY_DISABLE:
|
1016 |
vnc_write_u8(vs, 255);
|
1017 |
vnc_write_u8(vs, 1);
|
1018 |
vnc_write_u16(vs, 0);
|
1019 |
vnc_flush(vs); |
1020 |
break;
|
1021 |
|
1022 |
case AUD_CNOTIFY_ENABLE:
|
1023 |
vnc_write_u8(vs, 255);
|
1024 |
vnc_write_u8(vs, 1);
|
1025 |
vnc_write_u16(vs, 1);
|
1026 |
vnc_flush(vs); |
1027 |
break;
|
1028 |
} |
1029 |
} |
1030 |
|
1031 |
static void audio_capture_destroy(void *opaque) |
1032 |
{ |
1033 |
} |
1034 |
|
1035 |
static void audio_capture(void *opaque, void *buf, int size) |
1036 |
{ |
1037 |
VncState *vs = opaque; |
1038 |
|
1039 |
vnc_write_u8(vs, 255);
|
1040 |
vnc_write_u8(vs, 1);
|
1041 |
vnc_write_u16(vs, 2);
|
1042 |
vnc_write_u32(vs, size); |
1043 |
vnc_write(vs, buf, size); |
1044 |
vnc_flush(vs); |
1045 |
} |
1046 |
|
1047 |
static void audio_add(VncState *vs) |
1048 |
{ |
1049 |
Monitor *mon = cur_mon; |
1050 |
struct audio_capture_ops ops;
|
1051 |
|
1052 |
if (vs->audio_cap) {
|
1053 |
monitor_printf(mon, "audio already running\n");
|
1054 |
return;
|
1055 |
} |
1056 |
|
1057 |
ops.notify = audio_capture_notify; |
1058 |
ops.destroy = audio_capture_destroy; |
1059 |
ops.capture = audio_capture; |
1060 |
|
1061 |
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
1062 |
if (!vs->audio_cap) {
|
1063 |
monitor_printf(mon, "Failed to add audio capture\n");
|
1064 |
} |
1065 |
} |
1066 |
|
1067 |
static void audio_del(VncState *vs) |
1068 |
{ |
1069 |
if (vs->audio_cap) {
|
1070 |
AUD_del_capture(vs->audio_cap, vs); |
1071 |
vs->audio_cap = NULL;
|
1072 |
} |
1073 |
} |
1074 |
|
1075 |
static void vnc_disconnect_start(VncState *vs) |
1076 |
{ |
1077 |
if (vs->csock == -1) |
1078 |
return;
|
1079 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
1080 |
closesocket(vs->csock); |
1081 |
vs->csock = -1;
|
1082 |
} |
1083 |
|
1084 |
static void vnc_disconnect_finish(VncState *vs) |
1085 |
{ |
1086 |
vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED); |
1087 |
|
1088 |
if (vs->input.buffer) {
|
1089 |
qemu_free(vs->input.buffer); |
1090 |
vs->input.buffer = NULL;
|
1091 |
} |
1092 |
if (vs->output.buffer) {
|
1093 |
qemu_free(vs->output.buffer); |
1094 |
vs->output.buffer = NULL;
|
1095 |
} |
1096 |
|
1097 |
qobject_decref(vs->info); |
1098 |
|
1099 |
#ifdef CONFIG_VNC_TLS
|
1100 |
vnc_tls_client_cleanup(vs); |
1101 |
#endif /* CONFIG_VNC_TLS */ |
1102 |
#ifdef CONFIG_VNC_SASL
|
1103 |
vnc_sasl_client_cleanup(vs); |
1104 |
#endif /* CONFIG_VNC_SASL */ |
1105 |
audio_del(vs); |
1106 |
|
1107 |
QTAILQ_REMOVE(&vs->vd->clients, vs, next); |
1108 |
|
1109 |
if (QTAILQ_EMPTY(&vs->vd->clients)) {
|
1110 |
dcl->idle = 1;
|
1111 |
} |
1112 |
|
1113 |
vnc_remove_timer(vs->vd); |
1114 |
qemu_remove_led_event_handler(vs->led); |
1115 |
qemu_free(vs); |
1116 |
} |
1117 |
|
1118 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
1119 |
{ |
1120 |
if (ret == 0 || ret == -1) { |
1121 |
if (ret == -1) { |
1122 |
switch (last_errno) {
|
1123 |
case EINTR:
|
1124 |
case EAGAIN:
|
1125 |
#ifdef _WIN32
|
1126 |
case WSAEWOULDBLOCK:
|
1127 |
#endif
|
1128 |
return 0; |
1129 |
default:
|
1130 |
break;
|
1131 |
} |
1132 |
} |
1133 |
|
1134 |
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
1135 |
ret, ret < 0 ? last_errno : 0); |
1136 |
vnc_disconnect_start(vs); |
1137 |
|
1138 |
return 0; |
1139 |
} |
1140 |
return ret;
|
1141 |
} |
1142 |
|
1143 |
|
1144 |
void vnc_client_error(VncState *vs)
|
1145 |
{ |
1146 |
VNC_DEBUG("Closing down client sock: protocol error\n");
|
1147 |
vnc_disconnect_start(vs); |
1148 |
} |
1149 |
|
1150 |
|
1151 |
/*
|
1152 |
* Called to write a chunk of data to the client socket. The data may
|
1153 |
* be the raw data, or may have already been encoded by SASL.
|
1154 |
* The data will be written either straight onto the socket, or
|
1155 |
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1156 |
*
|
1157 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1158 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1159 |
* though, since SASL encryption will typically be a no-op if TLS
|
1160 |
* is active
|
1161 |
*
|
1162 |
* Returns the number of bytes written, which may be less than
|
1163 |
* the requested 'datalen' if the socket would block. Returns
|
1164 |
* -1 on error, and disconnects the client socket.
|
1165 |
*/
|
1166 |
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
1167 |
{ |
1168 |
long ret;
|
1169 |
#ifdef CONFIG_VNC_TLS
|
1170 |
if (vs->tls.session) {
|
1171 |
ret = gnutls_write(vs->tls.session, data, datalen); |
1172 |
if (ret < 0) { |
1173 |
if (ret == GNUTLS_E_AGAIN)
|
1174 |
errno = EAGAIN; |
1175 |
else
|
1176 |
errno = EIO; |
1177 |
ret = -1;
|
1178 |
} |
1179 |
} else
|
1180 |
#endif /* CONFIG_VNC_TLS */ |
1181 |
ret = send(vs->csock, (const void *)data, datalen, 0); |
1182 |
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
1183 |
return vnc_client_io_error(vs, ret, socket_error());
|
1184 |
} |
1185 |
|
1186 |
|
1187 |
/*
|
1188 |
* Called to write buffered data to the client socket, when not
|
1189 |
* using any SASL SSF encryption layers. Will write as much data
|
1190 |
* as possible without blocking. If all buffered data is written,
|
1191 |
* will switch the FD poll() handler back to read monitoring.
|
1192 |
*
|
1193 |
* Returns the number of bytes written, which may be less than
|
1194 |
* the buffered output data if the socket would block. Returns
|
1195 |
* -1 on error, and disconnects the client socket.
|
1196 |
*/
|
1197 |
static long vnc_client_write_plain(VncState *vs) |
1198 |
{ |
1199 |
long ret;
|
1200 |
|
1201 |
#ifdef CONFIG_VNC_SASL
|
1202 |
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
1203 |
vs->output.buffer, vs->output.capacity, vs->output.offset, |
1204 |
vs->sasl.waitWriteSSF); |
1205 |
|
1206 |
if (vs->sasl.conn &&
|
1207 |
vs->sasl.runSSF && |
1208 |
vs->sasl.waitWriteSSF) { |
1209 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
1210 |
if (ret)
|
1211 |
vs->sasl.waitWriteSSF -= ret; |
1212 |
} else
|
1213 |
#endif /* CONFIG_VNC_SASL */ |
1214 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
1215 |
if (!ret)
|
1216 |
return 0; |
1217 |
|
1218 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
1219 |
vs->output.offset -= ret; |
1220 |
|
1221 |
if (vs->output.offset == 0) { |
1222 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
1223 |
} |
1224 |
|
1225 |
return ret;
|
1226 |
} |
1227 |
|
1228 |
|
1229 |
/*
|
1230 |
* First function called whenever there is data to be written to
|
1231 |
* the client socket. Will delegate actual work according to whether
|
1232 |
* SASL SSF layers are enabled (thus requiring encryption calls)
|
1233 |
*/
|
1234 |
void vnc_client_write(void *opaque) |
1235 |
{ |
1236 |
long ret;
|
1237 |
VncState *vs = opaque; |
1238 |
|
1239 |
#ifdef CONFIG_VNC_SASL
|
1240 |
if (vs->sasl.conn &&
|
1241 |
vs->sasl.runSSF && |
1242 |
!vs->sasl.waitWriteSSF) |
1243 |
ret = vnc_client_write_sasl(vs); |
1244 |
else
|
1245 |
#endif /* CONFIG_VNC_SASL */ |
1246 |
ret = vnc_client_write_plain(vs); |
1247 |
} |
1248 |
|
1249 |
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
1250 |
{ |
1251 |
vs->read_handler = func; |
1252 |
vs->read_handler_expect = expecting; |
1253 |
} |
1254 |
|
1255 |
|
1256 |
/*
|
1257 |
* Called to read a chunk of data from the client socket. The data may
|
1258 |
* be the raw data, or may need to be further decoded by SASL.
|
1259 |
* The data will be read either straight from to the socket, or
|
1260 |
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1261 |
*
|
1262 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1263 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1264 |
* though, since SASL encryption will typically be a no-op if TLS
|
1265 |
* is active
|
1266 |
*
|
1267 |
* Returns the number of bytes read, which may be less than
|
1268 |
* the requested 'datalen' if the socket would block. Returns
|
1269 |
* -1 on error, and disconnects the client socket.
|
1270 |
*/
|
1271 |
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
1272 |
{ |
1273 |
long ret;
|
1274 |
#ifdef CONFIG_VNC_TLS
|
1275 |
if (vs->tls.session) {
|
1276 |
ret = gnutls_read(vs->tls.session, data, datalen); |
1277 |
if (ret < 0) { |
1278 |
if (ret == GNUTLS_E_AGAIN)
|
1279 |
errno = EAGAIN; |
1280 |
else
|
1281 |
errno = EIO; |
1282 |
ret = -1;
|
1283 |
} |
1284 |
} else
|
1285 |
#endif /* CONFIG_VNC_TLS */ |
1286 |
ret = recv(vs->csock, (void *)data, datalen, 0); |
1287 |
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
1288 |
return vnc_client_io_error(vs, ret, socket_error());
|
1289 |
} |
1290 |
|
1291 |
|
1292 |
/*
|
1293 |
* Called to read data from the client socket to the input buffer,
|
1294 |
* when not using any SASL SSF encryption layers. Will read as much
|
1295 |
* data as possible without blocking.
|
1296 |
*
|
1297 |
* Returns the number of bytes read. Returns -1 on error, and
|
1298 |
* disconnects the client socket.
|
1299 |
*/
|
1300 |
static long vnc_client_read_plain(VncState *vs) |
1301 |
{ |
1302 |
int ret;
|
1303 |
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
1304 |
vs->input.buffer, vs->input.capacity, vs->input.offset); |
1305 |
buffer_reserve(&vs->input, 4096);
|
1306 |
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
1307 |
if (!ret)
|
1308 |
return 0; |
1309 |
vs->input.offset += ret; |
1310 |
return ret;
|
1311 |
} |
1312 |
|
1313 |
|
1314 |
/*
|
1315 |
* First function called whenever there is more data to be read from
|
1316 |
* the client socket. Will delegate actual work according to whether
|
1317 |
* SASL SSF layers are enabled (thus requiring decryption calls)
|
1318 |
*/
|
1319 |
void vnc_client_read(void *opaque) |
1320 |
{ |
1321 |
VncState *vs = opaque; |
1322 |
long ret;
|
1323 |
|
1324 |
#ifdef CONFIG_VNC_SASL
|
1325 |
if (vs->sasl.conn && vs->sasl.runSSF)
|
1326 |
ret = vnc_client_read_sasl(vs); |
1327 |
else
|
1328 |
#endif /* CONFIG_VNC_SASL */ |
1329 |
ret = vnc_client_read_plain(vs); |
1330 |
if (!ret) {
|
1331 |
if (vs->csock == -1) |
1332 |
vnc_disconnect_finish(vs); |
1333 |
return;
|
1334 |
} |
1335 |
|
1336 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
1337 |
size_t len = vs->read_handler_expect; |
1338 |
int ret;
|
1339 |
|
1340 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
1341 |
if (vs->csock == -1) { |
1342 |
vnc_disconnect_finish(vs); |
1343 |
return;
|
1344 |
} |
1345 |
|
1346 |
if (!ret) {
|
1347 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
1348 |
vs->input.offset -= len; |
1349 |
} else {
|
1350 |
vs->read_handler_expect = ret; |
1351 |
} |
1352 |
} |
1353 |
} |
1354 |
|
1355 |
void vnc_write(VncState *vs, const void *data, size_t len) |
1356 |
{ |
1357 |
buffer_reserve(&vs->output, len); |
1358 |
|
1359 |
if (vs->csock != -1 && buffer_empty(&vs->output)) { |
1360 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
1361 |
} |
1362 |
|
1363 |
buffer_append(&vs->output, data, len); |
1364 |
} |
1365 |
|
1366 |
void vnc_write_s32(VncState *vs, int32_t value)
|
1367 |
{ |
1368 |
vnc_write_u32(vs, *(uint32_t *)&value); |
1369 |
} |
1370 |
|
1371 |
void vnc_write_u32(VncState *vs, uint32_t value)
|
1372 |
{ |
1373 |
uint8_t buf[4];
|
1374 |
|
1375 |
buf[0] = (value >> 24) & 0xFF; |
1376 |
buf[1] = (value >> 16) & 0xFF; |
1377 |
buf[2] = (value >> 8) & 0xFF; |
1378 |
buf[3] = value & 0xFF; |
1379 |
|
1380 |
vnc_write(vs, buf, 4);
|
1381 |
} |
1382 |
|
1383 |
void vnc_write_u16(VncState *vs, uint16_t value)
|
1384 |
{ |
1385 |
uint8_t buf[2];
|
1386 |
|
1387 |
buf[0] = (value >> 8) & 0xFF; |
1388 |
buf[1] = value & 0xFF; |
1389 |
|
1390 |
vnc_write(vs, buf, 2);
|
1391 |
} |
1392 |
|
1393 |
void vnc_write_u8(VncState *vs, uint8_t value)
|
1394 |
{ |
1395 |
vnc_write(vs, (char *)&value, 1); |
1396 |
} |
1397 |
|
1398 |
void vnc_flush(VncState *vs)
|
1399 |
{ |
1400 |
if (vs->csock != -1 && vs->output.offset) |
1401 |
vnc_client_write(vs); |
1402 |
} |
1403 |
|
1404 |
uint8_t read_u8(uint8_t *data, size_t offset) |
1405 |
{ |
1406 |
return data[offset];
|
1407 |
} |
1408 |
|
1409 |
uint16_t read_u16(uint8_t *data, size_t offset) |
1410 |
{ |
1411 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
1412 |
} |
1413 |
|
1414 |
int32_t read_s32(uint8_t *data, size_t offset) |
1415 |
{ |
1416 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
1417 |
(data[offset + 2] << 8) | data[offset + 3]); |
1418 |
} |
1419 |
|
1420 |
uint32_t read_u32(uint8_t *data, size_t offset) |
1421 |
{ |
1422 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
1423 |
(data[offset + 2] << 8) | data[offset + 3]); |
1424 |
} |
1425 |
|
1426 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
1427 |
{ |
1428 |
} |
1429 |
|
1430 |
static void check_pointer_type_change(VncState *vs, int absolute) |
1431 |
{ |
1432 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
1433 |
vnc_write_u8(vs, 0);
|
1434 |
vnc_write_u8(vs, 0);
|
1435 |
vnc_write_u16(vs, 1);
|
1436 |
vnc_framebuffer_update(vs, absolute, 0,
|
1437 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
1438 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
1439 |
vnc_flush(vs); |
1440 |
} |
1441 |
vs->absolute = absolute; |
1442 |
} |
1443 |
|
1444 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
1445 |
{ |
1446 |
int buttons = 0; |
1447 |
int dz = 0; |
1448 |
|
1449 |
if (button_mask & 0x01) |
1450 |
buttons |= MOUSE_EVENT_LBUTTON; |
1451 |
if (button_mask & 0x02) |
1452 |
buttons |= MOUSE_EVENT_MBUTTON; |
1453 |
if (button_mask & 0x04) |
1454 |
buttons |= MOUSE_EVENT_RBUTTON; |
1455 |
if (button_mask & 0x08) |
1456 |
dz = -1;
|
1457 |
if (button_mask & 0x10) |
1458 |
dz = 1;
|
1459 |
|
1460 |
if (vs->absolute) {
|
1461 |
kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1), |
1462 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1), |
1463 |
dz, buttons); |
1464 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
1465 |
x -= 0x7FFF;
|
1466 |
y -= 0x7FFF;
|
1467 |
|
1468 |
kbd_mouse_event(x, y, dz, buttons); |
1469 |
} else {
|
1470 |
if (vs->last_x != -1) |
1471 |
kbd_mouse_event(x - vs->last_x, |
1472 |
y - vs->last_y, |
1473 |
dz, buttons); |
1474 |
vs->last_x = x; |
1475 |
vs->last_y = y; |
1476 |
} |
1477 |
|
1478 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1479 |
} |
1480 |
|
1481 |
static void reset_keys(VncState *vs) |
1482 |
{ |
1483 |
int i;
|
1484 |
for(i = 0; i < 256; i++) { |
1485 |
if (vs->modifiers_state[i]) {
|
1486 |
if (i & SCANCODE_GREY)
|
1487 |
kbd_put_keycode(SCANCODE_EMUL0); |
1488 |
kbd_put_keycode(i | SCANCODE_UP); |
1489 |
vs->modifiers_state[i] = 0;
|
1490 |
} |
1491 |
} |
1492 |
} |
1493 |
|
1494 |
static void press_key(VncState *vs, int keysym) |
1495 |
{ |
1496 |
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
|
1497 |
if (keycode & SCANCODE_GREY)
|
1498 |
kbd_put_keycode(SCANCODE_EMUL0); |
1499 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1500 |
if (keycode & SCANCODE_GREY)
|
1501 |
kbd_put_keycode(SCANCODE_EMUL0); |
1502 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1503 |
} |
1504 |
|
1505 |
static void kbd_leds(void *opaque, int ledstate) |
1506 |
{ |
1507 |
VncState *vs = opaque; |
1508 |
int caps, num;
|
1509 |
|
1510 |
caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0; |
1511 |
num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0; |
1512 |
|
1513 |
if (vs->modifiers_state[0x3a] != caps) { |
1514 |
vs->modifiers_state[0x3a] = caps;
|
1515 |
} |
1516 |
if (vs->modifiers_state[0x45] != num) { |
1517 |
vs->modifiers_state[0x45] = num;
|
1518 |
} |
1519 |
} |
1520 |
|
1521 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
1522 |
{ |
1523 |
/* QEMU console switch */
|
1524 |
switch(keycode) {
|
1525 |
case 0x2a: /* Left Shift */ |
1526 |
case 0x36: /* Right Shift */ |
1527 |
case 0x1d: /* Left CTRL */ |
1528 |
case 0x9d: /* Right CTRL */ |
1529 |
case 0x38: /* Left ALT */ |
1530 |
case 0xb8: /* Right ALT */ |
1531 |
if (down)
|
1532 |
vs->modifiers_state[keycode] = 1;
|
1533 |
else
|
1534 |
vs->modifiers_state[keycode] = 0;
|
1535 |
break;
|
1536 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
1537 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
1538 |
/* Reset the modifiers sent to the current console */
|
1539 |
reset_keys(vs); |
1540 |
console_select(keycode - 0x02);
|
1541 |
return;
|
1542 |
} |
1543 |
break;
|
1544 |
case 0x3a: /* CapsLock */ |
1545 |
case 0x45: /* NumLock */ |
1546 |
if (down)
|
1547 |
vs->modifiers_state[keycode] ^= 1;
|
1548 |
break;
|
1549 |
} |
1550 |
|
1551 |
if (keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
|
1552 |
/* If the numlock state needs to change then simulate an additional
|
1553 |
keypress before sending this one. This will happen if the user
|
1554 |
toggles numlock away from the VNC window.
|
1555 |
*/
|
1556 |
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
1557 |
if (!vs->modifiers_state[0x45]) { |
1558 |
vs->modifiers_state[0x45] = 1; |
1559 |
press_key(vs, 0xff7f);
|
1560 |
} |
1561 |
} else {
|
1562 |
if (vs->modifiers_state[0x45]) { |
1563 |
vs->modifiers_state[0x45] = 0; |
1564 |
press_key(vs, 0xff7f);
|
1565 |
} |
1566 |
} |
1567 |
} |
1568 |
|
1569 |
if ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z')) { |
1570 |
/* If the capslock state needs to change then simulate an additional
|
1571 |
keypress before sending this one. This will happen if the user
|
1572 |
toggles capslock away from the VNC window.
|
1573 |
*/
|
1574 |
int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
1575 |
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
1576 |
int capslock = !!(vs->modifiers_state[0x3a]); |
1577 |
if (capslock) {
|
1578 |
if (uppercase == shift) {
|
1579 |
vs->modifiers_state[0x3a] = 0; |
1580 |
press_key(vs, 0xffe5);
|
1581 |
} |
1582 |
} else {
|
1583 |
if (uppercase != shift) {
|
1584 |
vs->modifiers_state[0x3a] = 1; |
1585 |
press_key(vs, 0xffe5);
|
1586 |
} |
1587 |
} |
1588 |
} |
1589 |
|
1590 |
if (is_graphic_console()) {
|
1591 |
if (keycode & SCANCODE_GREY)
|
1592 |
kbd_put_keycode(SCANCODE_EMUL0); |
1593 |
if (down)
|
1594 |
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
1595 |
else
|
1596 |
kbd_put_keycode(keycode | SCANCODE_UP); |
1597 |
} else {
|
1598 |
/* QEMU console emulation */
|
1599 |
if (down) {
|
1600 |
int numlock = vs->modifiers_state[0x45]; |
1601 |
switch (keycode) {
|
1602 |
case 0x2a: /* Left Shift */ |
1603 |
case 0x36: /* Right Shift */ |
1604 |
case 0x1d: /* Left CTRL */ |
1605 |
case 0x9d: /* Right CTRL */ |
1606 |
case 0x38: /* Left ALT */ |
1607 |
case 0xb8: /* Right ALT */ |
1608 |
break;
|
1609 |
case 0xc8: |
1610 |
kbd_put_keysym(QEMU_KEY_UP); |
1611 |
break;
|
1612 |
case 0xd0: |
1613 |
kbd_put_keysym(QEMU_KEY_DOWN); |
1614 |
break;
|
1615 |
case 0xcb: |
1616 |
kbd_put_keysym(QEMU_KEY_LEFT); |
1617 |
break;
|
1618 |
case 0xcd: |
1619 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
1620 |
break;
|
1621 |
case 0xd3: |
1622 |
kbd_put_keysym(QEMU_KEY_DELETE); |
1623 |
break;
|
1624 |
case 0xc7: |
1625 |
kbd_put_keysym(QEMU_KEY_HOME); |
1626 |
break;
|
1627 |
case 0xcf: |
1628 |
kbd_put_keysym(QEMU_KEY_END); |
1629 |
break;
|
1630 |
case 0xc9: |
1631 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
1632 |
break;
|
1633 |
case 0xd1: |
1634 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
1635 |
break;
|
1636 |
|
1637 |
case 0x47: |
1638 |
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
1639 |
break;
|
1640 |
case 0x48: |
1641 |
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
1642 |
break;
|
1643 |
case 0x49: |
1644 |
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
1645 |
break;
|
1646 |
case 0x4b: |
1647 |
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
1648 |
break;
|
1649 |
case 0x4c: |
1650 |
kbd_put_keysym('5');
|
1651 |
break;
|
1652 |
case 0x4d: |
1653 |
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
1654 |
break;
|
1655 |
case 0x4f: |
1656 |
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
1657 |
break;
|
1658 |
case 0x50: |
1659 |
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
1660 |
break;
|
1661 |
case 0x51: |
1662 |
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
1663 |
break;
|
1664 |
case 0x52: |
1665 |
kbd_put_keysym('0');
|
1666 |
break;
|
1667 |
case 0x53: |
1668 |
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
1669 |
break;
|
1670 |
|
1671 |
case 0xb5: |
1672 |
kbd_put_keysym('/');
|
1673 |
break;
|
1674 |
case 0x37: |
1675 |
kbd_put_keysym('*');
|
1676 |
break;
|
1677 |
case 0x4a: |
1678 |
kbd_put_keysym('-');
|
1679 |
break;
|
1680 |
case 0x4e: |
1681 |
kbd_put_keysym('+');
|
1682 |
break;
|
1683 |
case 0x9c: |
1684 |
kbd_put_keysym('\n');
|
1685 |
break;
|
1686 |
|
1687 |
default:
|
1688 |
kbd_put_keysym(sym); |
1689 |
break;
|
1690 |
} |
1691 |
} |
1692 |
} |
1693 |
} |
1694 |
|
1695 |
static void key_event(VncState *vs, int down, uint32_t sym) |
1696 |
{ |
1697 |
int keycode;
|
1698 |
int lsym = sym;
|
1699 |
|
1700 |
if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) { |
1701 |
lsym = lsym - 'A' + 'a'; |
1702 |
} |
1703 |
|
1704 |
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
|
1705 |
do_key_event(vs, down, keycode, sym); |
1706 |
} |
1707 |
|
1708 |
static void ext_key_event(VncState *vs, int down, |
1709 |
uint32_t sym, uint16_t keycode) |
1710 |
{ |
1711 |
/* if the user specifies a keyboard layout, always use it */
|
1712 |
if (keyboard_layout)
|
1713 |
key_event(vs, down, sym); |
1714 |
else
|
1715 |
do_key_event(vs, down, keycode, sym); |
1716 |
} |
1717 |
|
1718 |
static void framebuffer_update_request(VncState *vs, int incremental, |
1719 |
int x_position, int y_position, |
1720 |
int w, int h) |
1721 |
{ |
1722 |
if (x_position > ds_get_width(vs->ds))
|
1723 |
x_position = ds_get_width(vs->ds); |
1724 |
if (y_position > ds_get_height(vs->ds))
|
1725 |
y_position = ds_get_height(vs->ds); |
1726 |
if (x_position + w >= ds_get_width(vs->ds))
|
1727 |
w = ds_get_width(vs->ds) - x_position; |
1728 |
if (y_position + h >= ds_get_height(vs->ds))
|
1729 |
h = ds_get_height(vs->ds) - y_position; |
1730 |
|
1731 |
int i;
|
1732 |
vs->need_update = 1;
|
1733 |
if (!incremental) {
|
1734 |
vs->force_update = 1;
|
1735 |
for (i = 0; i < h; i++) { |
1736 |
vnc_set_bits(vs->dirty[y_position + i], |
1737 |
(ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
1738 |
} |
1739 |
} |
1740 |
} |
1741 |
|
1742 |
static void send_ext_key_event_ack(VncState *vs) |
1743 |
{ |
1744 |
vnc_write_u8(vs, 0);
|
1745 |
vnc_write_u8(vs, 0);
|
1746 |
vnc_write_u16(vs, 1);
|
1747 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1748 |
VNC_ENCODING_EXT_KEY_EVENT); |
1749 |
vnc_flush(vs); |
1750 |
} |
1751 |
|
1752 |
static void send_ext_audio_ack(VncState *vs) |
1753 |
{ |
1754 |
vnc_write_u8(vs, 0);
|
1755 |
vnc_write_u8(vs, 0);
|
1756 |
vnc_write_u16(vs, 1);
|
1757 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1758 |
VNC_ENCODING_AUDIO); |
1759 |
vnc_flush(vs); |
1760 |
} |
1761 |
|
1762 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
1763 |
{ |
1764 |
int i;
|
1765 |
unsigned int enc = 0; |
1766 |
|
1767 |
vnc_zlib_init(vs); |
1768 |
vs->features = 0;
|
1769 |
vs->vnc_encoding = 0;
|
1770 |
vs->tight_compression = 9;
|
1771 |
vs->tight_quality = 9;
|
1772 |
vs->absolute = -1;
|
1773 |
|
1774 |
for (i = n_encodings - 1; i >= 0; i--) { |
1775 |
enc = encodings[i]; |
1776 |
switch (enc) {
|
1777 |
case VNC_ENCODING_RAW:
|
1778 |
vs->vnc_encoding = enc; |
1779 |
break;
|
1780 |
case VNC_ENCODING_COPYRECT:
|
1781 |
vs->features |= VNC_FEATURE_COPYRECT_MASK; |
1782 |
break;
|
1783 |
case VNC_ENCODING_HEXTILE:
|
1784 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
1785 |
vs->vnc_encoding = enc; |
1786 |
break;
|
1787 |
case VNC_ENCODING_ZLIB:
|
1788 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
1789 |
vs->vnc_encoding = enc; |
1790 |
break;
|
1791 |
case VNC_ENCODING_DESKTOPRESIZE:
|
1792 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
1793 |
break;
|
1794 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
1795 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
1796 |
break;
|
1797 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
1798 |
send_ext_key_event_ack(vs); |
1799 |
break;
|
1800 |
case VNC_ENCODING_AUDIO:
|
1801 |
send_ext_audio_ack(vs); |
1802 |
break;
|
1803 |
case VNC_ENCODING_WMVi:
|
1804 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
1805 |
break;
|
1806 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
1807 |
vs->tight_compression = (enc & 0x0F);
|
1808 |
break;
|
1809 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
1810 |
vs->tight_quality = (enc & 0x0F);
|
1811 |
break;
|
1812 |
default:
|
1813 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
1814 |
break;
|
1815 |
} |
1816 |
} |
1817 |
|
1818 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1819 |
} |
1820 |
|
1821 |
static void set_pixel_conversion(VncState *vs) |
1822 |
{ |
1823 |
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
1824 |
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
1825 |
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
1826 |
vs->write_pixels = vnc_write_pixels_copy; |
1827 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1828 |
case 8: |
1829 |
vs->send_hextile_tile = send_hextile_tile_8; |
1830 |
break;
|
1831 |
case 16: |
1832 |
vs->send_hextile_tile = send_hextile_tile_16; |
1833 |
break;
|
1834 |
case 32: |
1835 |
vs->send_hextile_tile = send_hextile_tile_32; |
1836 |
break;
|
1837 |
} |
1838 |
} else {
|
1839 |
vs->write_pixels = vnc_write_pixels_generic; |
1840 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1841 |
case 8: |
1842 |
vs->send_hextile_tile = send_hextile_tile_generic_8; |
1843 |
break;
|
1844 |
case 16: |
1845 |
vs->send_hextile_tile = send_hextile_tile_generic_16; |
1846 |
break;
|
1847 |
case 32: |
1848 |
vs->send_hextile_tile = send_hextile_tile_generic_32; |
1849 |
break;
|
1850 |
} |
1851 |
} |
1852 |
} |
1853 |
|
1854 |
static void set_pixel_format(VncState *vs, |
1855 |
int bits_per_pixel, int depth, |
1856 |
int big_endian_flag, int true_color_flag, |
1857 |
int red_max, int green_max, int blue_max, |
1858 |
int red_shift, int green_shift, int blue_shift) |
1859 |
{ |
1860 |
if (!true_color_flag) {
|
1861 |
vnc_client_error(vs); |
1862 |
return;
|
1863 |
} |
1864 |
|
1865 |
vs->clientds = *(vs->vd->guest.ds); |
1866 |
vs->clientds.pf.rmax = red_max; |
1867 |
count_bits(vs->clientds.pf.rbits, red_max); |
1868 |
vs->clientds.pf.rshift = red_shift; |
1869 |
vs->clientds.pf.rmask = red_max << red_shift; |
1870 |
vs->clientds.pf.gmax = green_max; |
1871 |
count_bits(vs->clientds.pf.gbits, green_max); |
1872 |
vs->clientds.pf.gshift = green_shift; |
1873 |
vs->clientds.pf.gmask = green_max << green_shift; |
1874 |
vs->clientds.pf.bmax = blue_max; |
1875 |
count_bits(vs->clientds.pf.bbits, blue_max); |
1876 |
vs->clientds.pf.bshift = blue_shift; |
1877 |
vs->clientds.pf.bmask = blue_max << blue_shift; |
1878 |
vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
1879 |
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
1880 |
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
1881 |
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
1882 |
|
1883 |
set_pixel_conversion(vs); |
1884 |
|
1885 |
vga_hw_invalidate(); |
1886 |
vga_hw_update(); |
1887 |
} |
1888 |
|
1889 |
static void pixel_format_message (VncState *vs) { |
1890 |
char pad[3] = { 0, 0, 0 }; |
1891 |
|
1892 |
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
1893 |
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
1894 |
|
1895 |
#ifdef HOST_WORDS_BIGENDIAN
|
1896 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
1897 |
#else
|
1898 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
1899 |
#endif
|
1900 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
1901 |
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
1902 |
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
1903 |
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
1904 |
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
1905 |
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
1906 |
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
1907 |
if (vs->ds->surface->pf.bits_per_pixel == 32) |
1908 |
vs->send_hextile_tile = send_hextile_tile_32; |
1909 |
else if (vs->ds->surface->pf.bits_per_pixel == 16) |
1910 |
vs->send_hextile_tile = send_hextile_tile_16; |
1911 |
else if (vs->ds->surface->pf.bits_per_pixel == 8) |
1912 |
vs->send_hextile_tile = send_hextile_tile_8; |
1913 |
vs->clientds = *(vs->ds->surface); |
1914 |
vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG; |
1915 |
vs->write_pixels = vnc_write_pixels_copy; |
1916 |
|
1917 |
vnc_write(vs, pad, 3); /* padding */ |
1918 |
} |
1919 |
|
1920 |
static void vnc_dpy_setdata(DisplayState *ds) |
1921 |
{ |
1922 |
/* We don't have to do anything */
|
1923 |
} |
1924 |
|
1925 |
static void vnc_colordepth(VncState *vs) |
1926 |
{ |
1927 |
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
1928 |
/* Sending a WMVi message to notify the client*/
|
1929 |
vnc_write_u8(vs, 0); /* msg id */ |
1930 |
vnc_write_u8(vs, 0);
|
1931 |
vnc_write_u16(vs, 1); /* number of rects */ |
1932 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
1933 |
ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
1934 |
pixel_format_message(vs); |
1935 |
vnc_flush(vs); |
1936 |
} else {
|
1937 |
set_pixel_conversion(vs); |
1938 |
} |
1939 |
} |
1940 |
|
1941 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
1942 |
{ |
1943 |
int i;
|
1944 |
uint16_t limit; |
1945 |
VncDisplay *vd = vs->vd; |
1946 |
|
1947 |
if (data[0] > 3) { |
1948 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
1949 |
if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
|
1950 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
1951 |
} |
1952 |
|
1953 |
switch (data[0]) { |
1954 |
case 0: |
1955 |
if (len == 1) |
1956 |
return 20; |
1957 |
|
1958 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
1959 |
read_u8(data, 6), read_u8(data, 7), |
1960 |
read_u16(data, 8), read_u16(data, 10), |
1961 |
read_u16(data, 12), read_u8(data, 14), |
1962 |
read_u8(data, 15), read_u8(data, 16)); |
1963 |
break;
|
1964 |
case 2: |
1965 |
if (len == 1) |
1966 |
return 4; |
1967 |
|
1968 |
if (len == 4) { |
1969 |
limit = read_u16(data, 2);
|
1970 |
if (limit > 0) |
1971 |
return 4 + (limit * 4); |
1972 |
} else
|
1973 |
limit = read_u16(data, 2);
|
1974 |
|
1975 |
for (i = 0; i < limit; i++) { |
1976 |
int32_t val = read_s32(data, 4 + (i * 4)); |
1977 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
1978 |
} |
1979 |
|
1980 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
1981 |
break;
|
1982 |
case 3: |
1983 |
if (len == 1) |
1984 |
return 10; |
1985 |
|
1986 |
framebuffer_update_request(vs, |
1987 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
1988 |
read_u16(data, 6), read_u16(data, 8)); |
1989 |
break;
|
1990 |
case 4: |
1991 |
if (len == 1) |
1992 |
return 8; |
1993 |
|
1994 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
1995 |
break;
|
1996 |
case 5: |
1997 |
if (len == 1) |
1998 |
return 6; |
1999 |
|
2000 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
2001 |
break;
|
2002 |
case 6: |
2003 |
if (len == 1) |
2004 |
return 8; |
2005 |
|
2006 |
if (len == 8) { |
2007 |
uint32_t dlen = read_u32(data, 4);
|
2008 |
if (dlen > 0) |
2009 |
return 8 + dlen; |
2010 |
} |
2011 |
|
2012 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
2013 |
break;
|
2014 |
case 255: |
2015 |
if (len == 1) |
2016 |
return 2; |
2017 |
|
2018 |
switch (read_u8(data, 1)) { |
2019 |
case 0: |
2020 |
if (len == 2) |
2021 |
return 12; |
2022 |
|
2023 |
ext_key_event(vs, read_u16(data, 2),
|
2024 |
read_u32(data, 4), read_u32(data, 8)); |
2025 |
break;
|
2026 |
case 1: |
2027 |
if (len == 2) |
2028 |
return 4; |
2029 |
|
2030 |
switch (read_u16 (data, 2)) { |
2031 |
case 0: |
2032 |
audio_add(vs); |
2033 |
break;
|
2034 |
case 1: |
2035 |
audio_del(vs); |
2036 |
break;
|
2037 |
case 2: |
2038 |
if (len == 4) |
2039 |
return 10; |
2040 |
switch (read_u8(data, 4)) { |
2041 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
2042 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
2043 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
2044 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
2045 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
2046 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
2047 |
default:
|
2048 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
2049 |
vnc_client_error(vs); |
2050 |
break;
|
2051 |
} |
2052 |
vs->as.nchannels = read_u8(data, 5);
|
2053 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
2054 |
printf("Invalid audio channel coount %d\n",
|
2055 |
read_u8(data, 5));
|
2056 |
vnc_client_error(vs); |
2057 |
break;
|
2058 |
} |
2059 |
vs->as.freq = read_u32(data, 6);
|
2060 |
break;
|
2061 |
default:
|
2062 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
2063 |
vnc_client_error(vs); |
2064 |
break;
|
2065 |
} |
2066 |
break;
|
2067 |
|
2068 |
default:
|
2069 |
printf("Msg: %d\n", read_u16(data, 0)); |
2070 |
vnc_client_error(vs); |
2071 |
break;
|
2072 |
} |
2073 |
break;
|
2074 |
default:
|
2075 |
printf("Msg: %d\n", data[0]); |
2076 |
vnc_client_error(vs); |
2077 |
break;
|
2078 |
} |
2079 |
|
2080 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2081 |
return 0; |
2082 |
} |
2083 |
|
2084 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
2085 |
{ |
2086 |
char buf[1024]; |
2087 |
int size;
|
2088 |
|
2089 |
vnc_write_u16(vs, ds_get_width(vs->ds)); |
2090 |
vnc_write_u16(vs, ds_get_height(vs->ds)); |
2091 |
|
2092 |
pixel_format_message(vs); |
2093 |
|
2094 |
if (qemu_name)
|
2095 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
2096 |
else
|
2097 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
2098 |
|
2099 |
vnc_write_u32(vs, size); |
2100 |
vnc_write(vs, buf, size); |
2101 |
vnc_flush(vs); |
2102 |
|
2103 |
vnc_client_cache_auth(vs); |
2104 |
vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED); |
2105 |
|
2106 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2107 |
|
2108 |
return 0; |
2109 |
} |
2110 |
|
2111 |
void start_client_init(VncState *vs)
|
2112 |
{ |
2113 |
vnc_read_when(vs, protocol_client_init, 1);
|
2114 |
} |
2115 |
|
2116 |
static void make_challenge(VncState *vs) |
2117 |
{ |
2118 |
int i;
|
2119 |
|
2120 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
2121 |
|
2122 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
2123 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
2124 |
} |
2125 |
|
2126 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
2127 |
{ |
2128 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
2129 |
int i, j, pwlen;
|
2130 |
unsigned char key[8]; |
2131 |
|
2132 |
if (!vs->vd->password || !vs->vd->password[0]) { |
2133 |
VNC_DEBUG("No password configured on server");
|
2134 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2135 |
if (vs->minor >= 8) { |
2136 |
static const char err[] = "Authentication failed"; |
2137 |
vnc_write_u32(vs, sizeof(err));
|
2138 |
vnc_write(vs, err, sizeof(err));
|
2139 |
} |
2140 |
vnc_flush(vs); |
2141 |
vnc_client_error(vs); |
2142 |
return 0; |
2143 |
} |
2144 |
|
2145 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
2146 |
|
2147 |
/* Calculate the expected challenge response */
|
2148 |
pwlen = strlen(vs->vd->password); |
2149 |
for (i=0; i<sizeof(key); i++) |
2150 |
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
2151 |
deskey(key, EN0); |
2152 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
2153 |
des(response+j, response+j); |
2154 |
|
2155 |
/* Compare expected vs actual challenge response */
|
2156 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
2157 |
VNC_DEBUG("Client challenge reponse did not match\n");
|
2158 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2159 |
if (vs->minor >= 8) { |
2160 |
static const char err[] = "Authentication failed"; |
2161 |
vnc_write_u32(vs, sizeof(err));
|
2162 |
vnc_write(vs, err, sizeof(err));
|
2163 |
} |
2164 |
vnc_flush(vs); |
2165 |
vnc_client_error(vs); |
2166 |
} else {
|
2167 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
2168 |
vnc_write_u32(vs, 0); /* Accept auth */ |
2169 |
vnc_flush(vs); |
2170 |
|
2171 |
start_client_init(vs); |
2172 |
} |
2173 |
return 0; |
2174 |
} |
2175 |
|
2176 |
void start_auth_vnc(VncState *vs)
|
2177 |
{ |
2178 |
make_challenge(vs); |
2179 |
/* Send client a 'random' challenge */
|
2180 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
2181 |
vnc_flush(vs); |
2182 |
|
2183 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
2184 |
} |
2185 |
|
2186 |
|
2187 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
2188 |
{ |
2189 |
/* We only advertise 1 auth scheme at a time, so client
|
2190 |
* must pick the one we sent. Verify this */
|
2191 |
if (data[0] != vs->vd->auth) { /* Reject auth */ |
2192 |
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
2193 |
vnc_write_u32(vs, 1);
|
2194 |
if (vs->minor >= 8) { |
2195 |
static const char err[] = "Authentication failed"; |
2196 |
vnc_write_u32(vs, sizeof(err));
|
2197 |
vnc_write(vs, err, sizeof(err));
|
2198 |
} |
2199 |
vnc_client_error(vs); |
2200 |
} else { /* Accept requested auth */ |
2201 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
2202 |
switch (vs->vd->auth) {
|
2203 |
case VNC_AUTH_NONE:
|
2204 |
VNC_DEBUG("Accept auth none\n");
|
2205 |
if (vs->minor >= 8) { |
2206 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
2207 |
vnc_flush(vs); |
2208 |
} |
2209 |
start_client_init(vs); |
2210 |
break;
|
2211 |
|
2212 |
case VNC_AUTH_VNC:
|
2213 |
VNC_DEBUG("Start VNC auth\n");
|
2214 |
start_auth_vnc(vs); |
2215 |
break;
|
2216 |
|
2217 |
#ifdef CONFIG_VNC_TLS
|
2218 |
case VNC_AUTH_VENCRYPT:
|
2219 |
VNC_DEBUG("Accept VeNCrypt auth\n");;
|
2220 |
start_auth_vencrypt(vs); |
2221 |
break;
|
2222 |
#endif /* CONFIG_VNC_TLS */ |
2223 |
|
2224 |
#ifdef CONFIG_VNC_SASL
|
2225 |
case VNC_AUTH_SASL:
|
2226 |
VNC_DEBUG("Accept SASL auth\n");
|
2227 |
start_auth_sasl(vs); |
2228 |
break;
|
2229 |
#endif /* CONFIG_VNC_SASL */ |
2230 |
|
2231 |
default: /* Should not be possible, but just in case */ |
2232 |
VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
|
2233 |
vnc_write_u8(vs, 1);
|
2234 |
if (vs->minor >= 8) { |
2235 |
static const char err[] = "Authentication failed"; |
2236 |
vnc_write_u32(vs, sizeof(err));
|
2237 |
vnc_write(vs, err, sizeof(err));
|
2238 |
} |
2239 |
vnc_client_error(vs); |
2240 |
} |
2241 |
} |
2242 |
return 0; |
2243 |
} |
2244 |
|
2245 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
2246 |
{ |
2247 |
char local[13]; |
2248 |
|
2249 |
memcpy(local, version, 12);
|
2250 |
local[12] = 0; |
2251 |
|
2252 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
2253 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
2254 |
vnc_client_error(vs); |
2255 |
return 0; |
2256 |
} |
2257 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
2258 |
if (vs->major != 3 || |
2259 |
(vs->minor != 3 &&
|
2260 |
vs->minor != 4 &&
|
2261 |
vs->minor != 5 &&
|
2262 |
vs->minor != 7 &&
|
2263 |
vs->minor != 8)) {
|
2264 |
VNC_DEBUG("Unsupported client version\n");
|
2265 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2266 |
vnc_flush(vs); |
2267 |
vnc_client_error(vs); |
2268 |
return 0; |
2269 |
} |
2270 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
2271 |
* as equivalent to v3.3 by servers
|
2272 |
*/
|
2273 |
if (vs->minor == 4 || vs->minor == 5) |
2274 |
vs->minor = 3;
|
2275 |
|
2276 |
if (vs->minor == 3) { |
2277 |
if (vs->vd->auth == VNC_AUTH_NONE) {
|
2278 |
VNC_DEBUG("Tell client auth none\n");
|
2279 |
vnc_write_u32(vs, vs->vd->auth); |
2280 |
vnc_flush(vs); |
2281 |
start_client_init(vs); |
2282 |
} else if (vs->vd->auth == VNC_AUTH_VNC) { |
2283 |
VNC_DEBUG("Tell client VNC auth\n");
|
2284 |
vnc_write_u32(vs, vs->vd->auth); |
2285 |
vnc_flush(vs); |
2286 |
start_auth_vnc(vs); |
2287 |
} else {
|
2288 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
|
2289 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2290 |
vnc_flush(vs); |
2291 |
vnc_client_error(vs); |
2292 |
} |
2293 |
} else {
|
2294 |
VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
|
2295 |
vnc_write_u8(vs, 1); /* num auth */ |
2296 |
vnc_write_u8(vs, vs->vd->auth); |
2297 |
vnc_read_when(vs, protocol_client_auth, 1);
|
2298 |
vnc_flush(vs); |
2299 |
} |
2300 |
|
2301 |
return 0; |
2302 |
} |
2303 |
|
2304 |
static int vnc_refresh_server_surface(VncDisplay *vd) |
2305 |
{ |
2306 |
int y;
|
2307 |
uint8_t *guest_row; |
2308 |
uint8_t *server_row; |
2309 |
int cmp_bytes;
|
2310 |
uint32_t width_mask[VNC_DIRTY_WORDS]; |
2311 |
VncState *vs; |
2312 |
int has_dirty = 0; |
2313 |
|
2314 |
/*
|
2315 |
* Walk through the guest dirty map.
|
2316 |
* Check and copy modified bits from guest to server surface.
|
2317 |
* Update server dirty map.
|
2318 |
*/
|
2319 |
vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
|
2320 |
cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
|
2321 |
guest_row = vd->guest.ds->data; |
2322 |
server_row = vd->server->data; |
2323 |
for (y = 0; y < vd->guest.ds->height; y++) { |
2324 |
if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
|
2325 |
int x;
|
2326 |
uint8_t *guest_ptr; |
2327 |
uint8_t *server_ptr; |
2328 |
|
2329 |
guest_ptr = guest_row; |
2330 |
server_ptr = server_row; |
2331 |
|
2332 |
for (x = 0; x < vd->guest.ds->width; |
2333 |
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
2334 |
if (!vnc_get_bit(vd->guest.dirty[y], (x / 16))) |
2335 |
continue;
|
2336 |
vnc_clear_bit(vd->guest.dirty[y], (x / 16));
|
2337 |
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
2338 |
continue;
|
2339 |
memcpy(server_ptr, guest_ptr, cmp_bytes); |
2340 |
QTAILQ_FOREACH(vs, &vd->clients, next) { |
2341 |
vnc_set_bit(vs->dirty[y], (x / 16));
|
2342 |
} |
2343 |
has_dirty++; |
2344 |
} |
2345 |
} |
2346 |
guest_row += ds_get_linesize(vd->ds); |
2347 |
server_row += ds_get_linesize(vd->ds); |
2348 |
} |
2349 |
return has_dirty;
|
2350 |
} |
2351 |
|
2352 |
static void vnc_refresh(void *opaque) |
2353 |
{ |
2354 |
VncDisplay *vd = opaque; |
2355 |
VncState *vs, *vn; |
2356 |
int has_dirty, rects = 0; |
2357 |
|
2358 |
vga_hw_update(); |
2359 |
|
2360 |
has_dirty = vnc_refresh_server_surface(vd); |
2361 |
|
2362 |
QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
2363 |
rects += vnc_update_client(vs, has_dirty); |
2364 |
/* vs might be free()ed here */
|
2365 |
} |
2366 |
/* vd->timer could be NULL now if the last client disconnected,
|
2367 |
* in this case don't update the timer */
|
2368 |
if (vd->timer == NULL) |
2369 |
return;
|
2370 |
|
2371 |
if (has_dirty && rects) {
|
2372 |
vd->timer_interval /= 2;
|
2373 |
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
2374 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2375 |
} else {
|
2376 |
vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
2377 |
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
2378 |
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
2379 |
} |
2380 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
2381 |
} |
2382 |
|
2383 |
static void vnc_init_timer(VncDisplay *vd) |
2384 |
{ |
2385 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2386 |
if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) { |
2387 |
vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd); |
2388 |
vnc_refresh(vd); |
2389 |
} |
2390 |
} |
2391 |
|
2392 |
static void vnc_remove_timer(VncDisplay *vd) |
2393 |
{ |
2394 |
if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) { |
2395 |
qemu_del_timer(vd->timer); |
2396 |
qemu_free_timer(vd->timer); |
2397 |
vd->timer = NULL;
|
2398 |
} |
2399 |
} |
2400 |
|
2401 |
static void vnc_connect(VncDisplay *vd, int csock) |
2402 |
{ |
2403 |
VncState *vs = qemu_mallocz(sizeof(VncState));
|
2404 |
vs->csock = csock; |
2405 |
|
2406 |
VNC_DEBUG("New client on socket %d\n", csock);
|
2407 |
dcl->idle = 0;
|
2408 |
socket_set_nonblock(vs->csock); |
2409 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
2410 |
|
2411 |
vnc_client_cache_addr(vs); |
2412 |
vnc_qmp_event(vs, QEVENT_VNC_CONNECTED); |
2413 |
|
2414 |
vs->vd = vd; |
2415 |
vs->ds = vd->ds; |
2416 |
vs->last_x = -1;
|
2417 |
vs->last_y = -1;
|
2418 |
|
2419 |
vs->as.freq = 44100;
|
2420 |
vs->as.nchannels = 2;
|
2421 |
vs->as.fmt = AUD_FMT_S16; |
2422 |
vs->as.endianness = 0;
|
2423 |
|
2424 |
QTAILQ_INSERT_HEAD(&vd->clients, vs, next); |
2425 |
|
2426 |
vga_hw_update(); |
2427 |
|
2428 |
vnc_write(vs, "RFB 003.008\n", 12); |
2429 |
vnc_flush(vs); |
2430 |
vnc_read_when(vs, protocol_version, 12);
|
2431 |
reset_keys(vs); |
2432 |
vs->led = qemu_add_led_event_handler(kbd_leds, vs); |
2433 |
|
2434 |
vnc_init_timer(vd); |
2435 |
|
2436 |
/* vs might be free()ed here */
|
2437 |
} |
2438 |
|
2439 |
static void vnc_listen_read(void *opaque) |
2440 |
{ |
2441 |
VncDisplay *vs = opaque; |
2442 |
struct sockaddr_in addr;
|
2443 |
socklen_t addrlen = sizeof(addr);
|
2444 |
|
2445 |
/* Catch-up */
|
2446 |
vga_hw_update(); |
2447 |
|
2448 |
int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
2449 |
if (csock != -1) { |
2450 |
vnc_connect(vs, csock); |
2451 |
} |
2452 |
} |
2453 |
|
2454 |
void vnc_display_init(DisplayState *ds)
|
2455 |
{ |
2456 |
VncDisplay *vs = qemu_mallocz(sizeof(*vs));
|
2457 |
|
2458 |
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
|
2459 |
|
2460 |
ds->opaque = vs; |
2461 |
dcl->idle = 1;
|
2462 |
vnc_display = vs; |
2463 |
|
2464 |
vs->lsock = -1;
|
2465 |
|
2466 |
vs->ds = ds; |
2467 |
QTAILQ_INIT(&vs->clients); |
2468 |
|
2469 |
if (keyboard_layout)
|
2470 |
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
2471 |
else
|
2472 |
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
2473 |
|
2474 |
if (!vs->kbd_layout)
|
2475 |
exit(1);
|
2476 |
|
2477 |
dcl->dpy_copy = vnc_dpy_copy; |
2478 |
dcl->dpy_update = vnc_dpy_update; |
2479 |
dcl->dpy_resize = vnc_dpy_resize; |
2480 |
dcl->dpy_setdata = vnc_dpy_setdata; |
2481 |
register_displaychangelistener(ds, dcl); |
2482 |
} |
2483 |
|
2484 |
|
2485 |
void vnc_display_close(DisplayState *ds)
|
2486 |
{ |
2487 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2488 |
|
2489 |
if (!vs)
|
2490 |
return;
|
2491 |
if (vs->display) {
|
2492 |
qemu_free(vs->display); |
2493 |
vs->display = NULL;
|
2494 |
} |
2495 |
if (vs->lsock != -1) { |
2496 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
2497 |
close(vs->lsock); |
2498 |
vs->lsock = -1;
|
2499 |
} |
2500 |
vs->auth = VNC_AUTH_INVALID; |
2501 |
#ifdef CONFIG_VNC_TLS
|
2502 |
vs->subauth = VNC_AUTH_INVALID; |
2503 |
vs->tls.x509verify = 0;
|
2504 |
#endif
|
2505 |
} |
2506 |
|
2507 |
int vnc_display_password(DisplayState *ds, const char *password) |
2508 |
{ |
2509 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2510 |
|
2511 |
if (!vs) {
|
2512 |
return -1; |
2513 |
} |
2514 |
|
2515 |
if (vs->password) {
|
2516 |
qemu_free(vs->password); |
2517 |
vs->password = NULL;
|
2518 |
} |
2519 |
if (password && password[0]) { |
2520 |
if (!(vs->password = qemu_strdup(password)))
|
2521 |
return -1; |
2522 |
if (vs->auth == VNC_AUTH_NONE) {
|
2523 |
vs->auth = VNC_AUTH_VNC; |
2524 |
} |
2525 |
} else {
|
2526 |
vs->auth = VNC_AUTH_NONE; |
2527 |
} |
2528 |
|
2529 |
return 0; |
2530 |
} |
2531 |
|
2532 |
char *vnc_display_local_addr(DisplayState *ds)
|
2533 |
{ |
2534 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2535 |
|
2536 |
return vnc_socket_local_addr("%s:%s", vs->lsock); |
2537 |
} |
2538 |
|
2539 |
int vnc_display_open(DisplayState *ds, const char *display) |
2540 |
{ |
2541 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2542 |
const char *options; |
2543 |
int password = 0; |
2544 |
int reverse = 0; |
2545 |
#ifdef CONFIG_VNC_TLS
|
2546 |
int tls = 0, x509 = 0; |
2547 |
#endif
|
2548 |
#ifdef CONFIG_VNC_SASL
|
2549 |
int sasl = 0; |
2550 |
int saslErr;
|
2551 |
#endif
|
2552 |
int acl = 0; |
2553 |
|
2554 |
if (!vnc_display)
|
2555 |
return -1; |
2556 |
vnc_display_close(ds); |
2557 |
if (strcmp(display, "none") == 0) |
2558 |
return 0; |
2559 |
|
2560 |
if (!(vs->display = strdup(display)))
|
2561 |
return -1; |
2562 |
|
2563 |
options = display; |
2564 |
while ((options = strchr(options, ','))) { |
2565 |
options++; |
2566 |
if (strncmp(options, "password", 8) == 0) { |
2567 |
password = 1; /* Require password auth */ |
2568 |
} else if (strncmp(options, "reverse", 7) == 0) { |
2569 |
reverse = 1;
|
2570 |
#ifdef CONFIG_VNC_SASL
|
2571 |
} else if (strncmp(options, "sasl", 4) == 0) { |
2572 |
sasl = 1; /* Require SASL auth */ |
2573 |
#endif
|
2574 |
#ifdef CONFIG_VNC_TLS
|
2575 |
} else if (strncmp(options, "tls", 3) == 0) { |
2576 |
tls = 1; /* Require TLS */ |
2577 |
} else if (strncmp(options, "x509", 4) == 0) { |
2578 |
char *start, *end;
|
2579 |
x509 = 1; /* Require x509 certificates */ |
2580 |
if (strncmp(options, "x509verify", 10) == 0) |
2581 |
vs->tls.x509verify = 1; /* ...and verify client certs */ |
2582 |
|
2583 |
/* Now check for 'x509=/some/path' postfix
|
2584 |
* and use that to setup x509 certificate/key paths */
|
2585 |
start = strchr(options, '=');
|
2586 |
end = strchr(options, ',');
|
2587 |
if (start && (!end || (start < end))) {
|
2588 |
int len = end ? end-(start+1) : strlen(start+1); |
2589 |
char *path = qemu_strndup(start + 1, len); |
2590 |
|
2591 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
2592 |
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
2593 |
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
2594 |
qemu_free(path); |
2595 |
qemu_free(vs->display); |
2596 |
vs->display = NULL;
|
2597 |
return -1; |
2598 |
} |
2599 |
qemu_free(path); |
2600 |
} else {
|
2601 |
fprintf(stderr, "No certificate path provided\n");
|
2602 |
qemu_free(vs->display); |
2603 |
vs->display = NULL;
|
2604 |
return -1; |
2605 |
} |
2606 |
#endif
|
2607 |
} else if (strncmp(options, "acl", 3) == 0) { |
2608 |
acl = 1;
|
2609 |
} |
2610 |
} |
2611 |
|
2612 |
#ifdef CONFIG_VNC_TLS
|
2613 |
if (acl && x509 && vs->tls.x509verify) {
|
2614 |
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
2615 |
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
2616 |
exit(1);
|
2617 |
} |
2618 |
} |
2619 |
#endif
|
2620 |
#ifdef CONFIG_VNC_SASL
|
2621 |
if (acl && sasl) {
|
2622 |
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
2623 |
fprintf(stderr, "Failed to create username ACL\n");
|
2624 |
exit(1);
|
2625 |
} |
2626 |
} |
2627 |
#endif
|
2628 |
|
2629 |
/*
|
2630 |
* Combinations we support here:
|
2631 |
*
|
2632 |
* - no-auth (clear text, no auth)
|
2633 |
* - password (clear text, weak auth)
|
2634 |
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
2635 |
* - tls (encrypt, weak anonymous creds, no auth)
|
2636 |
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
2637 |
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
2638 |
* - tls + x509 (encrypt, good x509 creds, no auth)
|
2639 |
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
2640 |
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
2641 |
*
|
2642 |
* NB1. TLS is a stackable auth scheme.
|
2643 |
* NB2. the x509 schemes have option to validate a client cert dname
|
2644 |
*/
|
2645 |
if (password) {
|
2646 |
#ifdef CONFIG_VNC_TLS
|
2647 |
if (tls) {
|
2648 |
vs->auth = VNC_AUTH_VENCRYPT; |
2649 |
if (x509) {
|
2650 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
2651 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
2652 |
} else {
|
2653 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
2654 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
2655 |
} |
2656 |
} else {
|
2657 |
#endif /* CONFIG_VNC_TLS */ |
2658 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
2659 |
vs->auth = VNC_AUTH_VNC; |
2660 |
#ifdef CONFIG_VNC_TLS
|
2661 |
vs->subauth = VNC_AUTH_INVALID; |
2662 |
} |
2663 |
#endif /* CONFIG_VNC_TLS */ |
2664 |
#ifdef CONFIG_VNC_SASL
|
2665 |
} else if (sasl) { |
2666 |
#ifdef CONFIG_VNC_TLS
|
2667 |
if (tls) {
|
2668 |
vs->auth = VNC_AUTH_VENCRYPT; |
2669 |
if (x509) {
|
2670 |
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
2671 |
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
2672 |
} else {
|
2673 |
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
2674 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
2675 |
} |
2676 |
} else {
|
2677 |
#endif /* CONFIG_VNC_TLS */ |
2678 |
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
2679 |
vs->auth = VNC_AUTH_SASL; |
2680 |
#ifdef CONFIG_VNC_TLS
|
2681 |
vs->subauth = VNC_AUTH_INVALID; |
2682 |
} |
2683 |
#endif /* CONFIG_VNC_TLS */ |
2684 |
#endif /* CONFIG_VNC_SASL */ |
2685 |
} else {
|
2686 |
#ifdef CONFIG_VNC_TLS
|
2687 |
if (tls) {
|
2688 |
vs->auth = VNC_AUTH_VENCRYPT; |
2689 |
if (x509) {
|
2690 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
2691 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
2692 |
} else {
|
2693 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
2694 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
2695 |
} |
2696 |
} else {
|
2697 |
#endif
|
2698 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
2699 |
vs->auth = VNC_AUTH_NONE; |
2700 |
#ifdef CONFIG_VNC_TLS
|
2701 |
vs->subauth = VNC_AUTH_INVALID; |
2702 |
} |
2703 |
#endif
|
2704 |
} |
2705 |
|
2706 |
#ifdef CONFIG_VNC_SASL
|
2707 |
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
2708 |
fprintf(stderr, "Failed to initialize SASL auth %s",
|
2709 |
sasl_errstring(saslErr, NULL, NULL)); |
2710 |
free(vs->display); |
2711 |
vs->display = NULL;
|
2712 |
return -1; |
2713 |
} |
2714 |
#endif
|
2715 |
|
2716 |
if (reverse) {
|
2717 |
/* connect to viewer */
|
2718 |
if (strncmp(display, "unix:", 5) == 0) |
2719 |
vs->lsock = unix_connect(display+5);
|
2720 |
else
|
2721 |
vs->lsock = inet_connect(display, SOCK_STREAM); |
2722 |
if (-1 == vs->lsock) { |
2723 |
free(vs->display); |
2724 |
vs->display = NULL;
|
2725 |
return -1; |
2726 |
} else {
|
2727 |
int csock = vs->lsock;
|
2728 |
vs->lsock = -1;
|
2729 |
vnc_connect(vs, csock); |
2730 |
} |
2731 |
return 0; |
2732 |
|
2733 |
} else {
|
2734 |
/* listen for connects */
|
2735 |
char *dpy;
|
2736 |
dpy = qemu_malloc(256);
|
2737 |
if (strncmp(display, "unix:", 5) == 0) { |
2738 |
pstrcpy(dpy, 256, "unix:"); |
2739 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
2740 |
} else {
|
2741 |
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900); |
2742 |
} |
2743 |
if (-1 == vs->lsock) { |
2744 |
free(dpy); |
2745 |
return -1; |
2746 |
} else {
|
2747 |
free(vs->display); |
2748 |
vs->display = dpy; |
2749 |
} |
2750 |
} |
2751 |
return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
2752 |
} |