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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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return 0; |
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} |
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static int vnc_qdict_local_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 (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 QDict *do_info_vnc_client(Monitor *mon, 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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return NULL; |
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} |
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#ifdef CONFIG_VNC_TLS
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if (client->tls.session &&
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client->tls.dname) { |
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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, "username", qstring_from_str(client->sasl.username));
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} |
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#endif
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return qdict;
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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, "username") ?
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qdict_get_str(client, "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 (strcmp(qdict_get_str(server, "status"), "disabled") == 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",
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qdict_haskey(server, "auth") ? qdict_get_str(server, "auth") : "none"); |
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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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* - "status": "disabled" or "enabled"
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* - "host": server's IP address
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* - "service": server's port number
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* - "auth": authentication method (optional)
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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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* - "service": client's port number
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* - "x509_dname": TLS dname (optional)
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* - "username": SASL username (optional)
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*
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* Example:
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*
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* { "status": "enabled", "host": "0.0.0.0", "service": "50402", "auth": "vnc",
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* "clients": [ { "host": "127.0.0.1", "service": "50401" } ] }
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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("{ 'status': 'disabled' }");
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} else {
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QDict *qdict; |
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QList *clist; |
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clist = qlist_new(); |
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if (vnc_display->clients) {
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VncState *client = vnc_display->clients; |
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while (client) {
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qdict = do_info_vnc_client(mon, client); |
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if (qdict)
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qlist_append(clist, qdict); |
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client = client->next; |
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} |
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} |
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*ret_data = qobject_from_jsonf("{ 'status': 'enabled', 'clients': %p }",
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QOBJECT(clist)); |
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assert(*ret_data != NULL);
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qdict = qobject_to_qdict(*ret_data); |
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if (vnc_display->auth != VNC_AUTH_NONE) {
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qdict_put(qdict, "auth",
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qstring_from_str(vnc_auth_name(vnc_display))); |
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} |
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if (vnc_qdict_local_addr(qdict, vnc_display->lsock) < 0) { |
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qobject_decref(*ret_data); |
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*ret_data = NULL;
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} |
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} |
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} |
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static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
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return (vs->features & (1 << feature)); |
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} |
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/* TODO
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1) Get the queue working for IO.
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2) there is some weirdness when using the -S option (the screen is grey
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and not totally invalidated
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3) resolutions > 1024
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*/
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static int vnc_update_client(VncState *vs, int has_dirty); |
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static void vnc_disconnect_start(VncState *vs); |
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static void vnc_disconnect_finish(VncState *vs); |
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static void vnc_init_timer(VncDisplay *vd); |
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static void vnc_remove_timer(VncDisplay *vd); |
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static void vnc_colordepth(VncState *vs); |
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static void framebuffer_update_request(VncState *vs, int incremental, |
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int x_position, int y_position, |
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int w, int h); |
361 |
static void vnc_refresh(void *opaque); |
362 |
static int vnc_refresh_server_surface(VncDisplay *vd); |
363 |
|
364 |
static inline void vnc_set_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] |= 1 << (k & 0x1f); |
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} |
368 |
|
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static inline void vnc_clear_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] &= ~(1 << (k & 0x1f)); |
372 |
} |
373 |
|
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static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) |
375 |
{ |
376 |
int j;
|
377 |
|
378 |
j = 0;
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379 |
while (n >= 32) { |
380 |
d[j++] = -1;
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381 |
n -= 32;
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382 |
} |
383 |
if (n > 0) |
384 |
d[j++] = (1 << n) - 1; |
385 |
while (j < nb_words)
|
386 |
d[j++] = 0;
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387 |
} |
388 |
|
389 |
static inline int vnc_get_bit(const uint32_t *d, int k) |
390 |
{ |
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return (d[k >> 5] >> (k & 0x1f)) & 1; |
392 |
} |
393 |
|
394 |
static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, |
395 |
int nb_words)
|
396 |
{ |
397 |
int i;
|
398 |
for(i = 0; i < nb_words; i++) { |
399 |
if ((d1[i] & d2[i]) != 0) |
400 |
return 1; |
401 |
} |
402 |
return 0; |
403 |
} |
404 |
|
405 |
static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
406 |
{ |
407 |
int i;
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408 |
VncDisplay *vd = ds->opaque; |
409 |
struct VncSurface *s = &vd->guest;
|
410 |
|
411 |
h += y; |
412 |
|
413 |
/* round x down to ensure the loop only spans one 16-pixel block per,
|
414 |
iteration. otherwise, if (x % 16) != 0, the last iteration may span
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415 |
two 16-pixel blocks but we only mark the first as dirty
|
416 |
*/
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417 |
w += (x % 16);
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418 |
x -= (x % 16);
|
419 |
|
420 |
x = MIN(x, s->ds->width); |
421 |
y = MIN(y, s->ds->height); |
422 |
w = MIN(x + w, s->ds->width) - x; |
423 |
h = MIN(h, s->ds->height); |
424 |
|
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for (; y < h; y++)
|
426 |
for (i = 0; i < w; i += 16) |
427 |
vnc_set_bit(s->dirty[y], (x + i) / 16);
|
428 |
} |
429 |
|
430 |
static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
431 |
int32_t encoding) |
432 |
{ |
433 |
vnc_write_u16(vs, x); |
434 |
vnc_write_u16(vs, y); |
435 |
vnc_write_u16(vs, w); |
436 |
vnc_write_u16(vs, h); |
437 |
|
438 |
vnc_write_s32(vs, encoding); |
439 |
} |
440 |
|
441 |
void buffer_reserve(Buffer *buffer, size_t len)
|
442 |
{ |
443 |
if ((buffer->capacity - buffer->offset) < len) {
|
444 |
buffer->capacity += (len + 1024);
|
445 |
buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity); |
446 |
if (buffer->buffer == NULL) { |
447 |
fprintf(stderr, "vnc: out of memory\n");
|
448 |
exit(1);
|
449 |
} |
450 |
} |
451 |
} |
452 |
|
453 |
int buffer_empty(Buffer *buffer)
|
454 |
{ |
455 |
return buffer->offset == 0; |
456 |
} |
457 |
|
458 |
uint8_t *buffer_end(Buffer *buffer) |
459 |
{ |
460 |
return buffer->buffer + buffer->offset;
|
461 |
} |
462 |
|
463 |
void buffer_reset(Buffer *buffer)
|
464 |
{ |
465 |
buffer->offset = 0;
|
466 |
} |
467 |
|
468 |
void buffer_append(Buffer *buffer, const void *data, size_t len) |
469 |
{ |
470 |
memcpy(buffer->buffer + buffer->offset, data, len); |
471 |
buffer->offset += len; |
472 |
} |
473 |
|
474 |
static void vnc_dpy_resize(DisplayState *ds) |
475 |
{ |
476 |
int size_changed;
|
477 |
VncDisplay *vd = ds->opaque; |
478 |
VncState *vs = vd->clients; |
479 |
|
480 |
/* server surface */
|
481 |
if (!vd->server)
|
482 |
vd->server = qemu_mallocz(sizeof(*vd->server));
|
483 |
if (vd->server->data)
|
484 |
qemu_free(vd->server->data); |
485 |
*(vd->server) = *(ds->surface); |
486 |
vd->server->data = qemu_mallocz(vd->server->linesize * |
487 |
vd->server->height); |
488 |
|
489 |
/* guest surface */
|
490 |
if (!vd->guest.ds)
|
491 |
vd->guest.ds = qemu_mallocz(sizeof(*vd->guest.ds));
|
492 |
if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel)
|
493 |
console_color_init(ds); |
494 |
size_changed = ds_get_width(ds) != vd->guest.ds->width || |
495 |
ds_get_height(ds) != vd->guest.ds->height; |
496 |
*(vd->guest.ds) = *(ds->surface); |
497 |
memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
498 |
|
499 |
while (vs != NULL) { |
500 |
vnc_colordepth(vs); |
501 |
if (size_changed) {
|
502 |
if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
503 |
vnc_write_u8(vs, 0); /* msg id */ |
504 |
vnc_write_u8(vs, 0);
|
505 |
vnc_write_u16(vs, 1); /* number of rects */ |
506 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds), |
507 |
VNC_ENCODING_DESKTOPRESIZE); |
508 |
vnc_flush(vs); |
509 |
} |
510 |
} |
511 |
memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
512 |
vs = vs->next; |
513 |
} |
514 |
} |
515 |
|
516 |
/* fastest code */
|
517 |
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size) |
518 |
{ |
519 |
vnc_write(vs, pixels, size); |
520 |
} |
521 |
|
522 |
/* slowest but generic code. */
|
523 |
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) |
524 |
{ |
525 |
uint8_t r, g, b; |
526 |
VncDisplay *vd = vs->vd; |
527 |
|
528 |
r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >> |
529 |
vd->server->pf.rbits); |
530 |
g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >> |
531 |
vd->server->pf.gbits); |
532 |
b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >> |
533 |
vd->server->pf.bbits); |
534 |
v = (r << vs->clientds.pf.rshift) | |
535 |
(g << vs->clientds.pf.gshift) | |
536 |
(b << vs->clientds.pf.bshift); |
537 |
switch(vs->clientds.pf.bytes_per_pixel) {
|
538 |
case 1: |
539 |
buf[0] = v;
|
540 |
break;
|
541 |
case 2: |
542 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
543 |
buf[0] = v >> 8; |
544 |
buf[1] = v;
|
545 |
} else {
|
546 |
buf[1] = v >> 8; |
547 |
buf[0] = v;
|
548 |
} |
549 |
break;
|
550 |
default:
|
551 |
case 4: |
552 |
if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
|
553 |
buf[0] = v >> 24; |
554 |
buf[1] = v >> 16; |
555 |
buf[2] = v >> 8; |
556 |
buf[3] = v;
|
557 |
} else {
|
558 |
buf[3] = v >> 24; |
559 |
buf[2] = v >> 16; |
560 |
buf[1] = v >> 8; |
561 |
buf[0] = v;
|
562 |
} |
563 |
break;
|
564 |
} |
565 |
} |
566 |
|
567 |
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size) |
568 |
{ |
569 |
uint8_t buf[4];
|
570 |
VncDisplay *vd = vs->vd; |
571 |
|
572 |
if (vd->server->pf.bytes_per_pixel == 4) { |
573 |
uint32_t *pixels = pixels1; |
574 |
int n, i;
|
575 |
n = size >> 2;
|
576 |
for(i = 0; i < n; i++) { |
577 |
vnc_convert_pixel(vs, buf, pixels[i]); |
578 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
579 |
} |
580 |
} else if (vd->server->pf.bytes_per_pixel == 2) { |
581 |
uint16_t *pixels = pixels1; |
582 |
int n, i;
|
583 |
n = size >> 1;
|
584 |
for(i = 0; i < n; i++) { |
585 |
vnc_convert_pixel(vs, buf, pixels[i]); |
586 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
587 |
} |
588 |
} else if (vd->server->pf.bytes_per_pixel == 1) { |
589 |
uint8_t *pixels = pixels1; |
590 |
int n, i;
|
591 |
n = size; |
592 |
for(i = 0; i < n; i++) { |
593 |
vnc_convert_pixel(vs, buf, pixels[i]); |
594 |
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
595 |
} |
596 |
} else {
|
597 |
fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
|
598 |
} |
599 |
} |
600 |
|
601 |
static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h) |
602 |
{ |
603 |
int i;
|
604 |
uint8_t *row; |
605 |
VncDisplay *vd = vs->vd; |
606 |
|
607 |
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
608 |
for (i = 0; i < h; i++) { |
609 |
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds)); |
610 |
row += ds_get_linesize(vs->ds); |
611 |
} |
612 |
} |
613 |
|
614 |
static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h) |
615 |
{ |
616 |
ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F); |
617 |
ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F); |
618 |
} |
619 |
|
620 |
#define BPP 8 |
621 |
#include "vnchextile.h" |
622 |
#undef BPP
|
623 |
|
624 |
#define BPP 16 |
625 |
#include "vnchextile.h" |
626 |
#undef BPP
|
627 |
|
628 |
#define BPP 32 |
629 |
#include "vnchextile.h" |
630 |
#undef BPP
|
631 |
|
632 |
#define GENERIC
|
633 |
#define BPP 8 |
634 |
#include "vnchextile.h" |
635 |
#undef BPP
|
636 |
#undef GENERIC
|
637 |
|
638 |
#define GENERIC
|
639 |
#define BPP 16 |
640 |
#include "vnchextile.h" |
641 |
#undef BPP
|
642 |
#undef GENERIC
|
643 |
|
644 |
#define GENERIC
|
645 |
#define BPP 32 |
646 |
#include "vnchextile.h" |
647 |
#undef BPP
|
648 |
#undef GENERIC
|
649 |
|
650 |
static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h) |
651 |
{ |
652 |
int i, j;
|
653 |
int has_fg, has_bg;
|
654 |
uint8_t *last_fg, *last_bg; |
655 |
VncDisplay *vd = vs->vd; |
656 |
|
657 |
last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
658 |
last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel); |
659 |
has_fg = has_bg = 0;
|
660 |
for (j = y; j < (y + h); j += 16) { |
661 |
for (i = x; i < (x + w); i += 16) { |
662 |
vs->send_hextile_tile(vs, i, j, |
663 |
MIN(16, x + w - i), MIN(16, y + h - j), |
664 |
last_bg, last_fg, &has_bg, &has_fg); |
665 |
} |
666 |
} |
667 |
free(last_fg); |
668 |
free(last_bg); |
669 |
|
670 |
} |
671 |
|
672 |
#define ZALLOC_ALIGNMENT 16 |
673 |
|
674 |
static void *zalloc(void *x, unsigned items, unsigned size) |
675 |
{ |
676 |
void *p;
|
677 |
|
678 |
size *= items; |
679 |
size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
680 |
|
681 |
p = qemu_mallocz(size); |
682 |
|
683 |
return (p);
|
684 |
} |
685 |
|
686 |
static void zfree(void *x, void *addr) |
687 |
{ |
688 |
qemu_free(addr); |
689 |
} |
690 |
|
691 |
static void vnc_zlib_init(VncState *vs) |
692 |
{ |
693 |
int i;
|
694 |
for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++) |
695 |
vs->zlib_stream[i].opaque = NULL;
|
696 |
} |
697 |
|
698 |
static void vnc_zlib_start(VncState *vs) |
699 |
{ |
700 |
buffer_reset(&vs->zlib); |
701 |
|
702 |
// make the output buffer be the zlib buffer, so we can compress it later
|
703 |
vs->zlib_tmp = vs->output; |
704 |
vs->output = vs->zlib; |
705 |
} |
706 |
|
707 |
static int vnc_zlib_stop(VncState *vs, int stream_id) |
708 |
{ |
709 |
z_streamp zstream = &vs->zlib_stream[stream_id]; |
710 |
int previous_out;
|
711 |
|
712 |
// switch back to normal output/zlib buffers
|
713 |
vs->zlib = vs->output; |
714 |
vs->output = vs->zlib_tmp; |
715 |
|
716 |
// compress the zlib buffer
|
717 |
|
718 |
// initialize the stream
|
719 |
// XXX need one stream per session
|
720 |
if (zstream->opaque != vs) {
|
721 |
int err;
|
722 |
|
723 |
VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
|
724 |
VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
|
725 |
zstream->zalloc = zalloc; |
726 |
zstream->zfree = zfree; |
727 |
|
728 |
err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS, |
729 |
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY); |
730 |
|
731 |
if (err != Z_OK) {
|
732 |
fprintf(stderr, "VNC: error initializing zlib\n");
|
733 |
return -1; |
734 |
} |
735 |
|
736 |
zstream->opaque = vs; |
737 |
} |
738 |
|
739 |
// XXX what to do if tight_compression changed in between?
|
740 |
|
741 |
// reserve memory in output buffer
|
742 |
buffer_reserve(&vs->output, vs->zlib.offset + 64);
|
743 |
|
744 |
// set pointers
|
745 |
zstream->next_in = vs->zlib.buffer; |
746 |
zstream->avail_in = vs->zlib.offset; |
747 |
zstream->next_out = vs->output.buffer + vs->output.offset; |
748 |
zstream->avail_out = vs->output.capacity - vs->output.offset; |
749 |
zstream->data_type = Z_BINARY; |
750 |
previous_out = zstream->total_out; |
751 |
|
752 |
// start encoding
|
753 |
if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
|
754 |
fprintf(stderr, "VNC: error during zlib compression\n");
|
755 |
return -1; |
756 |
} |
757 |
|
758 |
vs->output.offset = vs->output.capacity - zstream->avail_out; |
759 |
return zstream->total_out - previous_out;
|
760 |
} |
761 |
|
762 |
static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h) |
763 |
{ |
764 |
int old_offset, new_offset, bytes_written;
|
765 |
|
766 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB); |
767 |
|
768 |
// remember where we put in the follow-up size
|
769 |
old_offset = vs->output.offset; |
770 |
vnc_write_s32(vs, 0);
|
771 |
|
772 |
// compress the stream
|
773 |
vnc_zlib_start(vs); |
774 |
send_framebuffer_update_raw(vs, x, y, w, h); |
775 |
bytes_written = vnc_zlib_stop(vs, 0);
|
776 |
|
777 |
if (bytes_written == -1) |
778 |
return;
|
779 |
|
780 |
// hack in the size
|
781 |
new_offset = vs->output.offset; |
782 |
vs->output.offset = old_offset; |
783 |
vnc_write_u32(vs, bytes_written); |
784 |
vs->output.offset = new_offset; |
785 |
} |
786 |
|
787 |
static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
788 |
{ |
789 |
switch(vs->vnc_encoding) {
|
790 |
case VNC_ENCODING_ZLIB:
|
791 |
send_framebuffer_update_zlib(vs, x, y, w, h); |
792 |
break;
|
793 |
case VNC_ENCODING_HEXTILE:
|
794 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
795 |
send_framebuffer_update_hextile(vs, x, y, w, h); |
796 |
break;
|
797 |
default:
|
798 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
799 |
send_framebuffer_update_raw(vs, x, y, w, h); |
800 |
break;
|
801 |
} |
802 |
} |
803 |
|
804 |
static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
805 |
{ |
806 |
/* send bitblit op to the vnc client */
|
807 |
vnc_write_u8(vs, 0); /* msg id */ |
808 |
vnc_write_u8(vs, 0);
|
809 |
vnc_write_u16(vs, 1); /* number of rects */ |
810 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
811 |
vnc_write_u16(vs, src_x); |
812 |
vnc_write_u16(vs, src_y); |
813 |
vnc_flush(vs); |
814 |
} |
815 |
|
816 |
static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
817 |
{ |
818 |
VncDisplay *vd = ds->opaque; |
819 |
VncState *vs, *vn; |
820 |
uint8_t *src_row; |
821 |
uint8_t *dst_row; |
822 |
int i,x,y,pitch,depth,inc,w_lim,s;
|
823 |
int cmp_bytes;
|
824 |
|
825 |
vnc_refresh_server_surface(vd); |
826 |
for (vs = vd->clients; vs != NULL; vs = vn) { |
827 |
vn = vs->next; |
828 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
|
829 |
vs->force_update = 1;
|
830 |
vnc_update_client(vs, 1);
|
831 |
/* vs might be free()ed here */
|
832 |
} |
833 |
} |
834 |
|
835 |
/* do bitblit op on the local surface too */
|
836 |
pitch = ds_get_linesize(vd->ds); |
837 |
depth = ds_get_bytes_per_pixel(vd->ds); |
838 |
src_row = vd->server->data + pitch * src_y + depth * src_x; |
839 |
dst_row = vd->server->data + pitch * dst_y + depth * dst_x; |
840 |
y = dst_y; |
841 |
inc = 1;
|
842 |
if (dst_y > src_y) {
|
843 |
/* copy backwards */
|
844 |
src_row += pitch * (h-1);
|
845 |
dst_row += pitch * (h-1);
|
846 |
pitch = -pitch; |
847 |
y = dst_y + h - 1;
|
848 |
inc = -1;
|
849 |
} |
850 |
w_lim = w - (16 - (dst_x % 16)); |
851 |
if (w_lim < 0) |
852 |
w_lim = w; |
853 |
else
|
854 |
w_lim = w - (w_lim % 16);
|
855 |
for (i = 0; i < h; i++) { |
856 |
for (x = 0; x <= w_lim; |
857 |
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) { |
858 |
if (x == w_lim) {
|
859 |
if ((s = w - w_lim) == 0) |
860 |
break;
|
861 |
} else if (!x) { |
862 |
s = (16 - (dst_x % 16)); |
863 |
s = MIN(s, w_lim); |
864 |
} else {
|
865 |
s = 16;
|
866 |
} |
867 |
cmp_bytes = s * depth; |
868 |
if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
869 |
continue;
|
870 |
memmove(dst_row, src_row, cmp_bytes); |
871 |
vs = vd->clients; |
872 |
while (vs != NULL) { |
873 |
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
|
874 |
vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16));
|
875 |
vs = vs->next; |
876 |
} |
877 |
} |
878 |
src_row += pitch - w * depth; |
879 |
dst_row += pitch - w * depth; |
880 |
y += inc; |
881 |
} |
882 |
|
883 |
for (vs = vd->clients; vs != NULL; vs = vs->next) { |
884 |
if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
|
885 |
vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
886 |
} |
887 |
} |
888 |
|
889 |
static int find_and_clear_dirty_height(struct VncState *vs, |
890 |
int y, int last_x, int x) |
891 |
{ |
892 |
int h;
|
893 |
VncDisplay *vd = vs->vd; |
894 |
|
895 |
for (h = 1; h < (vd->server->height - y); h++) { |
896 |
int tmp_x;
|
897 |
if (!vnc_get_bit(vs->dirty[y + h], last_x))
|
898 |
break;
|
899 |
for (tmp_x = last_x; tmp_x < x; tmp_x++)
|
900 |
vnc_clear_bit(vs->dirty[y + h], tmp_x); |
901 |
} |
902 |
|
903 |
return h;
|
904 |
} |
905 |
|
906 |
static int vnc_update_client(VncState *vs, int has_dirty) |
907 |
{ |
908 |
if (vs->need_update && vs->csock != -1) { |
909 |
VncDisplay *vd = vs->vd; |
910 |
int y;
|
911 |
int n_rectangles;
|
912 |
int saved_offset;
|
913 |
|
914 |
if (vs->output.offset && !vs->audio_cap && !vs->force_update)
|
915 |
/* kernel send buffers are full -> drop frames to throttle */
|
916 |
return 0; |
917 |
|
918 |
if (!has_dirty && !vs->audio_cap && !vs->force_update)
|
919 |
return 0; |
920 |
|
921 |
/*
|
922 |
* Send screen updates to the vnc client using the server
|
923 |
* surface and server dirty map. guest surface updates
|
924 |
* happening in parallel don't disturb us, the next pass will
|
925 |
* send them to the client.
|
926 |
*/
|
927 |
n_rectangles = 0;
|
928 |
vnc_write_u8(vs, 0); /* msg id */ |
929 |
vnc_write_u8(vs, 0);
|
930 |
saved_offset = vs->output.offset; |
931 |
vnc_write_u16(vs, 0);
|
932 |
|
933 |
for (y = 0; y < vd->server->height; y++) { |
934 |
int x;
|
935 |
int last_x = -1; |
936 |
for (x = 0; x < vd->server->width / 16; x++) { |
937 |
if (vnc_get_bit(vs->dirty[y], x)) {
|
938 |
if (last_x == -1) { |
939 |
last_x = x; |
940 |
} |
941 |
vnc_clear_bit(vs->dirty[y], x); |
942 |
} else {
|
943 |
if (last_x != -1) { |
944 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
945 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
946 |
n_rectangles++; |
947 |
} |
948 |
last_x = -1;
|
949 |
} |
950 |
} |
951 |
if (last_x != -1) { |
952 |
int h = find_and_clear_dirty_height(vs, y, last_x, x);
|
953 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
954 |
n_rectangles++; |
955 |
} |
956 |
} |
957 |
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; |
958 |
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; |
959 |
vnc_flush(vs); |
960 |
vs->force_update = 0;
|
961 |
return n_rectangles;
|
962 |
} |
963 |
|
964 |
if (vs->csock == -1) |
965 |
vnc_disconnect_finish(vs); |
966 |
|
967 |
return 0; |
968 |
} |
969 |
|
970 |
/* audio */
|
971 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
972 |
{ |
973 |
VncState *vs = opaque; |
974 |
|
975 |
switch (cmd) {
|
976 |
case AUD_CNOTIFY_DISABLE:
|
977 |
vnc_write_u8(vs, 255);
|
978 |
vnc_write_u8(vs, 1);
|
979 |
vnc_write_u16(vs, 0);
|
980 |
vnc_flush(vs); |
981 |
break;
|
982 |
|
983 |
case AUD_CNOTIFY_ENABLE:
|
984 |
vnc_write_u8(vs, 255);
|
985 |
vnc_write_u8(vs, 1);
|
986 |
vnc_write_u16(vs, 1);
|
987 |
vnc_flush(vs); |
988 |
break;
|
989 |
} |
990 |
} |
991 |
|
992 |
static void audio_capture_destroy(void *opaque) |
993 |
{ |
994 |
} |
995 |
|
996 |
static void audio_capture(void *opaque, void *buf, int size) |
997 |
{ |
998 |
VncState *vs = opaque; |
999 |
|
1000 |
vnc_write_u8(vs, 255);
|
1001 |
vnc_write_u8(vs, 1);
|
1002 |
vnc_write_u16(vs, 2);
|
1003 |
vnc_write_u32(vs, size); |
1004 |
vnc_write(vs, buf, size); |
1005 |
vnc_flush(vs); |
1006 |
} |
1007 |
|
1008 |
static void audio_add(VncState *vs) |
1009 |
{ |
1010 |
Monitor *mon = cur_mon; |
1011 |
struct audio_capture_ops ops;
|
1012 |
|
1013 |
if (vs->audio_cap) {
|
1014 |
monitor_printf(mon, "audio already running\n");
|
1015 |
return;
|
1016 |
} |
1017 |
|
1018 |
ops.notify = audio_capture_notify; |
1019 |
ops.destroy = audio_capture_destroy; |
1020 |
ops.capture = audio_capture; |
1021 |
|
1022 |
vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
1023 |
if (!vs->audio_cap) {
|
1024 |
monitor_printf(mon, "Failed to add audio capture\n");
|
1025 |
} |
1026 |
} |
1027 |
|
1028 |
static void audio_del(VncState *vs) |
1029 |
{ |
1030 |
if (vs->audio_cap) {
|
1031 |
AUD_del_capture(vs->audio_cap, vs); |
1032 |
vs->audio_cap = NULL;
|
1033 |
} |
1034 |
} |
1035 |
|
1036 |
static void vnc_disconnect_start(VncState *vs) |
1037 |
{ |
1038 |
if (vs->csock == -1) |
1039 |
return;
|
1040 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
1041 |
closesocket(vs->csock); |
1042 |
vs->csock = -1;
|
1043 |
} |
1044 |
|
1045 |
static void vnc_disconnect_finish(VncState *vs) |
1046 |
{ |
1047 |
if (vs->input.buffer) {
|
1048 |
qemu_free(vs->input.buffer); |
1049 |
vs->input.buffer = NULL;
|
1050 |
} |
1051 |
if (vs->output.buffer) {
|
1052 |
qemu_free(vs->output.buffer); |
1053 |
vs->output.buffer = NULL;
|
1054 |
} |
1055 |
#ifdef CONFIG_VNC_TLS
|
1056 |
vnc_tls_client_cleanup(vs); |
1057 |
#endif /* CONFIG_VNC_TLS */ |
1058 |
#ifdef CONFIG_VNC_SASL
|
1059 |
vnc_sasl_client_cleanup(vs); |
1060 |
#endif /* CONFIG_VNC_SASL */ |
1061 |
audio_del(vs); |
1062 |
|
1063 |
VncState *p, *parent = NULL;
|
1064 |
for (p = vs->vd->clients; p != NULL; p = p->next) { |
1065 |
if (p == vs) {
|
1066 |
if (parent)
|
1067 |
parent->next = p->next; |
1068 |
else
|
1069 |
vs->vd->clients = p->next; |
1070 |
break;
|
1071 |
} |
1072 |
parent = p; |
1073 |
} |
1074 |
if (!vs->vd->clients)
|
1075 |
dcl->idle = 1;
|
1076 |
|
1077 |
vnc_remove_timer(vs->vd); |
1078 |
qemu_free(vs); |
1079 |
} |
1080 |
|
1081 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
1082 |
{ |
1083 |
if (ret == 0 || ret == -1) { |
1084 |
if (ret == -1) { |
1085 |
switch (last_errno) {
|
1086 |
case EINTR:
|
1087 |
case EAGAIN:
|
1088 |
#ifdef _WIN32
|
1089 |
case WSAEWOULDBLOCK:
|
1090 |
#endif
|
1091 |
return 0; |
1092 |
default:
|
1093 |
break;
|
1094 |
} |
1095 |
} |
1096 |
|
1097 |
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
|
1098 |
ret, ret < 0 ? last_errno : 0); |
1099 |
vnc_disconnect_start(vs); |
1100 |
|
1101 |
return 0; |
1102 |
} |
1103 |
return ret;
|
1104 |
} |
1105 |
|
1106 |
|
1107 |
void vnc_client_error(VncState *vs)
|
1108 |
{ |
1109 |
VNC_DEBUG("Closing down client sock: protocol error\n");
|
1110 |
vnc_disconnect_start(vs); |
1111 |
} |
1112 |
|
1113 |
|
1114 |
/*
|
1115 |
* Called to write a chunk of data to the client socket. The data may
|
1116 |
* be the raw data, or may have already been encoded by SASL.
|
1117 |
* The data will be written either straight onto the socket, or
|
1118 |
* written via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1119 |
*
|
1120 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1121 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1122 |
* though, since SASL encryption will typically be a no-op if TLS
|
1123 |
* is active
|
1124 |
*
|
1125 |
* Returns the number of bytes written, which may be less than
|
1126 |
* the requested 'datalen' if the socket would block. Returns
|
1127 |
* -1 on error, and disconnects the client socket.
|
1128 |
*/
|
1129 |
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
1130 |
{ |
1131 |
long ret;
|
1132 |
#ifdef CONFIG_VNC_TLS
|
1133 |
if (vs->tls.session) {
|
1134 |
ret = gnutls_write(vs->tls.session, data, datalen); |
1135 |
if (ret < 0) { |
1136 |
if (ret == GNUTLS_E_AGAIN)
|
1137 |
errno = EAGAIN; |
1138 |
else
|
1139 |
errno = EIO; |
1140 |
ret = -1;
|
1141 |
} |
1142 |
} else
|
1143 |
#endif /* CONFIG_VNC_TLS */ |
1144 |
ret = send(vs->csock, (const void *)data, datalen, 0); |
1145 |
VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
|
1146 |
return vnc_client_io_error(vs, ret, socket_error());
|
1147 |
} |
1148 |
|
1149 |
|
1150 |
/*
|
1151 |
* Called to write buffered data to the client socket, when not
|
1152 |
* using any SASL SSF encryption layers. Will write as much data
|
1153 |
* as possible without blocking. If all buffered data is written,
|
1154 |
* will switch the FD poll() handler back to read monitoring.
|
1155 |
*
|
1156 |
* Returns the number of bytes written, which may be less than
|
1157 |
* the buffered output data if the socket would block. Returns
|
1158 |
* -1 on error, and disconnects the client socket.
|
1159 |
*/
|
1160 |
static long vnc_client_write_plain(VncState *vs) |
1161 |
{ |
1162 |
long ret;
|
1163 |
|
1164 |
#ifdef CONFIG_VNC_SASL
|
1165 |
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
|
1166 |
vs->output.buffer, vs->output.capacity, vs->output.offset, |
1167 |
vs->sasl.waitWriteSSF); |
1168 |
|
1169 |
if (vs->sasl.conn &&
|
1170 |
vs->sasl.runSSF && |
1171 |
vs->sasl.waitWriteSSF) { |
1172 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
1173 |
if (ret)
|
1174 |
vs->sasl.waitWriteSSF -= ret; |
1175 |
} else
|
1176 |
#endif /* CONFIG_VNC_SASL */ |
1177 |
ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
1178 |
if (!ret)
|
1179 |
return 0; |
1180 |
|
1181 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
1182 |
vs->output.offset -= ret; |
1183 |
|
1184 |
if (vs->output.offset == 0) { |
1185 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
1186 |
} |
1187 |
|
1188 |
return ret;
|
1189 |
} |
1190 |
|
1191 |
|
1192 |
/*
|
1193 |
* First function called whenever there is data to be written to
|
1194 |
* the client socket. Will delegate actual work according to whether
|
1195 |
* SASL SSF layers are enabled (thus requiring encryption calls)
|
1196 |
*/
|
1197 |
void vnc_client_write(void *opaque) |
1198 |
{ |
1199 |
long ret;
|
1200 |
VncState *vs = opaque; |
1201 |
|
1202 |
#ifdef CONFIG_VNC_SASL
|
1203 |
if (vs->sasl.conn &&
|
1204 |
vs->sasl.runSSF && |
1205 |
!vs->sasl.waitWriteSSF) |
1206 |
ret = vnc_client_write_sasl(vs); |
1207 |
else
|
1208 |
#endif /* CONFIG_VNC_SASL */ |
1209 |
ret = vnc_client_write_plain(vs); |
1210 |
} |
1211 |
|
1212 |
void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
|
1213 |
{ |
1214 |
vs->read_handler = func; |
1215 |
vs->read_handler_expect = expecting; |
1216 |
} |
1217 |
|
1218 |
|
1219 |
/*
|
1220 |
* Called to read a chunk of data from the client socket. The data may
|
1221 |
* be the raw data, or may need to be further decoded by SASL.
|
1222 |
* The data will be read either straight from to the socket, or
|
1223 |
* read via the GNUTLS wrappers, if TLS/SSL encryption is enabled
|
1224 |
*
|
1225 |
* NB, it is theoretically possible to have 2 layers of encryption,
|
1226 |
* both SASL, and this TLS layer. It is highly unlikely in practice
|
1227 |
* though, since SASL encryption will typically be a no-op if TLS
|
1228 |
* is active
|
1229 |
*
|
1230 |
* Returns the number of bytes read, which may be less than
|
1231 |
* the requested 'datalen' if the socket would block. Returns
|
1232 |
* -1 on error, and disconnects the client socket.
|
1233 |
*/
|
1234 |
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
|
1235 |
{ |
1236 |
long ret;
|
1237 |
#ifdef CONFIG_VNC_TLS
|
1238 |
if (vs->tls.session) {
|
1239 |
ret = gnutls_read(vs->tls.session, data, datalen); |
1240 |
if (ret < 0) { |
1241 |
if (ret == GNUTLS_E_AGAIN)
|
1242 |
errno = EAGAIN; |
1243 |
else
|
1244 |
errno = EIO; |
1245 |
ret = -1;
|
1246 |
} |
1247 |
} else
|
1248 |
#endif /* CONFIG_VNC_TLS */ |
1249 |
ret = recv(vs->csock, (void *)data, datalen, 0); |
1250 |
VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
|
1251 |
return vnc_client_io_error(vs, ret, socket_error());
|
1252 |
} |
1253 |
|
1254 |
|
1255 |
/*
|
1256 |
* Called to read data from the client socket to the input buffer,
|
1257 |
* when not using any SASL SSF encryption layers. Will read as much
|
1258 |
* data as possible without blocking.
|
1259 |
*
|
1260 |
* Returns the number of bytes read. Returns -1 on error, and
|
1261 |
* disconnects the client socket.
|
1262 |
*/
|
1263 |
static long vnc_client_read_plain(VncState *vs) |
1264 |
{ |
1265 |
int ret;
|
1266 |
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
|
1267 |
vs->input.buffer, vs->input.capacity, vs->input.offset); |
1268 |
buffer_reserve(&vs->input, 4096);
|
1269 |
ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096);
|
1270 |
if (!ret)
|
1271 |
return 0; |
1272 |
vs->input.offset += ret; |
1273 |
return ret;
|
1274 |
} |
1275 |
|
1276 |
|
1277 |
/*
|
1278 |
* First function called whenever there is more data to be read from
|
1279 |
* the client socket. Will delegate actual work according to whether
|
1280 |
* SASL SSF layers are enabled (thus requiring decryption calls)
|
1281 |
*/
|
1282 |
void vnc_client_read(void *opaque) |
1283 |
{ |
1284 |
VncState *vs = opaque; |
1285 |
long ret;
|
1286 |
|
1287 |
#ifdef CONFIG_VNC_SASL
|
1288 |
if (vs->sasl.conn && vs->sasl.runSSF)
|
1289 |
ret = vnc_client_read_sasl(vs); |
1290 |
else
|
1291 |
#endif /* CONFIG_VNC_SASL */ |
1292 |
ret = vnc_client_read_plain(vs); |
1293 |
if (!ret) {
|
1294 |
if (vs->csock == -1) |
1295 |
vnc_disconnect_finish(vs); |
1296 |
return;
|
1297 |
} |
1298 |
|
1299 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
1300 |
size_t len = vs->read_handler_expect; |
1301 |
int ret;
|
1302 |
|
1303 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
1304 |
if (vs->csock == -1) { |
1305 |
vnc_disconnect_finish(vs); |
1306 |
return;
|
1307 |
} |
1308 |
|
1309 |
if (!ret) {
|
1310 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
1311 |
vs->input.offset -= len; |
1312 |
} else {
|
1313 |
vs->read_handler_expect = ret; |
1314 |
} |
1315 |
} |
1316 |
} |
1317 |
|
1318 |
void vnc_write(VncState *vs, const void *data, size_t len) |
1319 |
{ |
1320 |
buffer_reserve(&vs->output, len); |
1321 |
|
1322 |
if (vs->csock != -1 && buffer_empty(&vs->output)) { |
1323 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
1324 |
} |
1325 |
|
1326 |
buffer_append(&vs->output, data, len); |
1327 |
} |
1328 |
|
1329 |
void vnc_write_s32(VncState *vs, int32_t value)
|
1330 |
{ |
1331 |
vnc_write_u32(vs, *(uint32_t *)&value); |
1332 |
} |
1333 |
|
1334 |
void vnc_write_u32(VncState *vs, uint32_t value)
|
1335 |
{ |
1336 |
uint8_t buf[4];
|
1337 |
|
1338 |
buf[0] = (value >> 24) & 0xFF; |
1339 |
buf[1] = (value >> 16) & 0xFF; |
1340 |
buf[2] = (value >> 8) & 0xFF; |
1341 |
buf[3] = value & 0xFF; |
1342 |
|
1343 |
vnc_write(vs, buf, 4);
|
1344 |
} |
1345 |
|
1346 |
void vnc_write_u16(VncState *vs, uint16_t value)
|
1347 |
{ |
1348 |
uint8_t buf[2];
|
1349 |
|
1350 |
buf[0] = (value >> 8) & 0xFF; |
1351 |
buf[1] = value & 0xFF; |
1352 |
|
1353 |
vnc_write(vs, buf, 2);
|
1354 |
} |
1355 |
|
1356 |
void vnc_write_u8(VncState *vs, uint8_t value)
|
1357 |
{ |
1358 |
vnc_write(vs, (char *)&value, 1); |
1359 |
} |
1360 |
|
1361 |
void vnc_flush(VncState *vs)
|
1362 |
{ |
1363 |
if (vs->csock != -1 && vs->output.offset) |
1364 |
vnc_client_write(vs); |
1365 |
} |
1366 |
|
1367 |
uint8_t read_u8(uint8_t *data, size_t offset) |
1368 |
{ |
1369 |
return data[offset];
|
1370 |
} |
1371 |
|
1372 |
uint16_t read_u16(uint8_t *data, size_t offset) |
1373 |
{ |
1374 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
1375 |
} |
1376 |
|
1377 |
int32_t read_s32(uint8_t *data, size_t offset) |
1378 |
{ |
1379 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
1380 |
(data[offset + 2] << 8) | data[offset + 3]); |
1381 |
} |
1382 |
|
1383 |
uint32_t read_u32(uint8_t *data, size_t offset) |
1384 |
{ |
1385 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
1386 |
(data[offset + 2] << 8) | data[offset + 3]); |
1387 |
} |
1388 |
|
1389 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
1390 |
{ |
1391 |
} |
1392 |
|
1393 |
static void check_pointer_type_change(VncState *vs, int absolute) |
1394 |
{ |
1395 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
1396 |
vnc_write_u8(vs, 0);
|
1397 |
vnc_write_u8(vs, 0);
|
1398 |
vnc_write_u16(vs, 1);
|
1399 |
vnc_framebuffer_update(vs, absolute, 0,
|
1400 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
1401 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
1402 |
vnc_flush(vs); |
1403 |
} |
1404 |
vs->absolute = absolute; |
1405 |
} |
1406 |
|
1407 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
1408 |
{ |
1409 |
int buttons = 0; |
1410 |
int dz = 0; |
1411 |
|
1412 |
if (button_mask & 0x01) |
1413 |
buttons |= MOUSE_EVENT_LBUTTON; |
1414 |
if (button_mask & 0x02) |
1415 |
buttons |= MOUSE_EVENT_MBUTTON; |
1416 |
if (button_mask & 0x04) |
1417 |
buttons |= MOUSE_EVENT_RBUTTON; |
1418 |
if (button_mask & 0x08) |
1419 |
dz = -1;
|
1420 |
if (button_mask & 0x10) |
1421 |
dz = 1;
|
1422 |
|
1423 |
if (vs->absolute) {
|
1424 |
kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1), |
1425 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1), |
1426 |
dz, buttons); |
1427 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
1428 |
x -= 0x7FFF;
|
1429 |
y -= 0x7FFF;
|
1430 |
|
1431 |
kbd_mouse_event(x, y, dz, buttons); |
1432 |
} else {
|
1433 |
if (vs->last_x != -1) |
1434 |
kbd_mouse_event(x - vs->last_x, |
1435 |
y - vs->last_y, |
1436 |
dz, buttons); |
1437 |
vs->last_x = x; |
1438 |
vs->last_y = y; |
1439 |
} |
1440 |
|
1441 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1442 |
} |
1443 |
|
1444 |
static void reset_keys(VncState *vs) |
1445 |
{ |
1446 |
int i;
|
1447 |
for(i = 0; i < 256; i++) { |
1448 |
if (vs->modifiers_state[i]) {
|
1449 |
if (i & 0x80) |
1450 |
kbd_put_keycode(0xe0);
|
1451 |
kbd_put_keycode(i | 0x80);
|
1452 |
vs->modifiers_state[i] = 0;
|
1453 |
} |
1454 |
} |
1455 |
} |
1456 |
|
1457 |
static void press_key(VncState *vs, int keysym) |
1458 |
{ |
1459 |
kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) & 0x7f);
|
1460 |
kbd_put_keycode(keysym2scancode(vs->vd->kbd_layout, keysym) | 0x80);
|
1461 |
} |
1462 |
|
1463 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
1464 |
{ |
1465 |
/* QEMU console switch */
|
1466 |
switch(keycode) {
|
1467 |
case 0x2a: /* Left Shift */ |
1468 |
case 0x36: /* Right Shift */ |
1469 |
case 0x1d: /* Left CTRL */ |
1470 |
case 0x9d: /* Right CTRL */ |
1471 |
case 0x38: /* Left ALT */ |
1472 |
case 0xb8: /* Right ALT */ |
1473 |
if (down)
|
1474 |
vs->modifiers_state[keycode] = 1;
|
1475 |
else
|
1476 |
vs->modifiers_state[keycode] = 0;
|
1477 |
break;
|
1478 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
1479 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
1480 |
/* Reset the modifiers sent to the current console */
|
1481 |
reset_keys(vs); |
1482 |
console_select(keycode - 0x02);
|
1483 |
return;
|
1484 |
} |
1485 |
break;
|
1486 |
case 0x3a: /* CapsLock */ |
1487 |
case 0x45: /* NumLock */ |
1488 |
if (!down)
|
1489 |
vs->modifiers_state[keycode] ^= 1;
|
1490 |
break;
|
1491 |
} |
1492 |
|
1493 |
if (keycode_is_keypad(vs->vd->kbd_layout, keycode)) {
|
1494 |
/* If the numlock state needs to change then simulate an additional
|
1495 |
keypress before sending this one. This will happen if the user
|
1496 |
toggles numlock away from the VNC window.
|
1497 |
*/
|
1498 |
if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
1499 |
if (!vs->modifiers_state[0x45]) { |
1500 |
vs->modifiers_state[0x45] = 1; |
1501 |
press_key(vs, 0xff7f);
|
1502 |
} |
1503 |
} else {
|
1504 |
if (vs->modifiers_state[0x45]) { |
1505 |
vs->modifiers_state[0x45] = 0; |
1506 |
press_key(vs, 0xff7f);
|
1507 |
} |
1508 |
} |
1509 |
} |
1510 |
|
1511 |
if ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z')) { |
1512 |
/* If the capslock state needs to change then simulate an additional
|
1513 |
keypress before sending this one. This will happen if the user
|
1514 |
toggles capslock away from the VNC window.
|
1515 |
*/
|
1516 |
int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
1517 |
int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
1518 |
int capslock = !!(vs->modifiers_state[0x3a]); |
1519 |
if (capslock) {
|
1520 |
if (uppercase == shift) {
|
1521 |
vs->modifiers_state[0x3a] = 0; |
1522 |
press_key(vs, 0xffe5);
|
1523 |
} |
1524 |
} else {
|
1525 |
if (uppercase != shift) {
|
1526 |
vs->modifiers_state[0x3a] = 1; |
1527 |
press_key(vs, 0xffe5);
|
1528 |
} |
1529 |
} |
1530 |
} |
1531 |
|
1532 |
if (is_graphic_console()) {
|
1533 |
if (keycode & 0x80) |
1534 |
kbd_put_keycode(0xe0);
|
1535 |
if (down)
|
1536 |
kbd_put_keycode(keycode & 0x7f);
|
1537 |
else
|
1538 |
kbd_put_keycode(keycode | 0x80);
|
1539 |
} else {
|
1540 |
/* QEMU console emulation */
|
1541 |
if (down) {
|
1542 |
int numlock = vs->modifiers_state[0x45]; |
1543 |
switch (keycode) {
|
1544 |
case 0x2a: /* Left Shift */ |
1545 |
case 0x36: /* Right Shift */ |
1546 |
case 0x1d: /* Left CTRL */ |
1547 |
case 0x9d: /* Right CTRL */ |
1548 |
case 0x38: /* Left ALT */ |
1549 |
case 0xb8: /* Right ALT */ |
1550 |
break;
|
1551 |
case 0xc8: |
1552 |
kbd_put_keysym(QEMU_KEY_UP); |
1553 |
break;
|
1554 |
case 0xd0: |
1555 |
kbd_put_keysym(QEMU_KEY_DOWN); |
1556 |
break;
|
1557 |
case 0xcb: |
1558 |
kbd_put_keysym(QEMU_KEY_LEFT); |
1559 |
break;
|
1560 |
case 0xcd: |
1561 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
1562 |
break;
|
1563 |
case 0xd3: |
1564 |
kbd_put_keysym(QEMU_KEY_DELETE); |
1565 |
break;
|
1566 |
case 0xc7: |
1567 |
kbd_put_keysym(QEMU_KEY_HOME); |
1568 |
break;
|
1569 |
case 0xcf: |
1570 |
kbd_put_keysym(QEMU_KEY_END); |
1571 |
break;
|
1572 |
case 0xc9: |
1573 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
1574 |
break;
|
1575 |
case 0xd1: |
1576 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
1577 |
break;
|
1578 |
|
1579 |
case 0x47: |
1580 |
kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME);
|
1581 |
break;
|
1582 |
case 0x48: |
1583 |
kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP);
|
1584 |
break;
|
1585 |
case 0x49: |
1586 |
kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP);
|
1587 |
break;
|
1588 |
case 0x4b: |
1589 |
kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT);
|
1590 |
break;
|
1591 |
case 0x4c: |
1592 |
kbd_put_keysym('5');
|
1593 |
break;
|
1594 |
case 0x4d: |
1595 |
kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT);
|
1596 |
break;
|
1597 |
case 0x4f: |
1598 |
kbd_put_keysym(numlock ? '1' : QEMU_KEY_END);
|
1599 |
break;
|
1600 |
case 0x50: |
1601 |
kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN);
|
1602 |
break;
|
1603 |
case 0x51: |
1604 |
kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN);
|
1605 |
break;
|
1606 |
case 0x52: |
1607 |
kbd_put_keysym('0');
|
1608 |
break;
|
1609 |
case 0x53: |
1610 |
kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE);
|
1611 |
break;
|
1612 |
|
1613 |
case 0xb5: |
1614 |
kbd_put_keysym('/');
|
1615 |
break;
|
1616 |
case 0x37: |
1617 |
kbd_put_keysym('*');
|
1618 |
break;
|
1619 |
case 0x4a: |
1620 |
kbd_put_keysym('-');
|
1621 |
break;
|
1622 |
case 0x4e: |
1623 |
kbd_put_keysym('+');
|
1624 |
break;
|
1625 |
case 0x9c: |
1626 |
kbd_put_keysym('\n');
|
1627 |
break;
|
1628 |
|
1629 |
default:
|
1630 |
kbd_put_keysym(sym); |
1631 |
break;
|
1632 |
} |
1633 |
} |
1634 |
} |
1635 |
} |
1636 |
|
1637 |
static void key_event(VncState *vs, int down, uint32_t sym) |
1638 |
{ |
1639 |
int keycode;
|
1640 |
int lsym = sym;
|
1641 |
|
1642 |
if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) { |
1643 |
lsym = lsym - 'A' + 'a'; |
1644 |
} |
1645 |
|
1646 |
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF);
|
1647 |
do_key_event(vs, down, keycode, sym); |
1648 |
} |
1649 |
|
1650 |
static void ext_key_event(VncState *vs, int down, |
1651 |
uint32_t sym, uint16_t keycode) |
1652 |
{ |
1653 |
/* if the user specifies a keyboard layout, always use it */
|
1654 |
if (keyboard_layout)
|
1655 |
key_event(vs, down, sym); |
1656 |
else
|
1657 |
do_key_event(vs, down, keycode, sym); |
1658 |
} |
1659 |
|
1660 |
static void framebuffer_update_request(VncState *vs, int incremental, |
1661 |
int x_position, int y_position, |
1662 |
int w, int h) |
1663 |
{ |
1664 |
if (x_position > ds_get_width(vs->ds))
|
1665 |
x_position = ds_get_width(vs->ds); |
1666 |
if (y_position > ds_get_height(vs->ds))
|
1667 |
y_position = ds_get_height(vs->ds); |
1668 |
if (x_position + w >= ds_get_width(vs->ds))
|
1669 |
w = ds_get_width(vs->ds) - x_position; |
1670 |
if (y_position + h >= ds_get_height(vs->ds))
|
1671 |
h = ds_get_height(vs->ds) - y_position; |
1672 |
|
1673 |
int i;
|
1674 |
vs->need_update = 1;
|
1675 |
if (!incremental) {
|
1676 |
vs->force_update = 1;
|
1677 |
for (i = 0; i < h; i++) { |
1678 |
vnc_set_bits(vs->dirty[y_position + i], |
1679 |
(ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
1680 |
} |
1681 |
} |
1682 |
} |
1683 |
|
1684 |
static void send_ext_key_event_ack(VncState *vs) |
1685 |
{ |
1686 |
vnc_write_u8(vs, 0);
|
1687 |
vnc_write_u8(vs, 0);
|
1688 |
vnc_write_u16(vs, 1);
|
1689 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1690 |
VNC_ENCODING_EXT_KEY_EVENT); |
1691 |
vnc_flush(vs); |
1692 |
} |
1693 |
|
1694 |
static void send_ext_audio_ack(VncState *vs) |
1695 |
{ |
1696 |
vnc_write_u8(vs, 0);
|
1697 |
vnc_write_u8(vs, 0);
|
1698 |
vnc_write_u16(vs, 1);
|
1699 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1700 |
VNC_ENCODING_AUDIO); |
1701 |
vnc_flush(vs); |
1702 |
} |
1703 |
|
1704 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
1705 |
{ |
1706 |
int i;
|
1707 |
unsigned int enc = 0; |
1708 |
|
1709 |
vnc_zlib_init(vs); |
1710 |
vs->features = 0;
|
1711 |
vs->vnc_encoding = 0;
|
1712 |
vs->tight_compression = 9;
|
1713 |
vs->tight_quality = 9;
|
1714 |
vs->absolute = -1;
|
1715 |
|
1716 |
for (i = n_encodings - 1; i >= 0; i--) { |
1717 |
enc = encodings[i]; |
1718 |
switch (enc) {
|
1719 |
case VNC_ENCODING_RAW:
|
1720 |
vs->vnc_encoding = enc; |
1721 |
break;
|
1722 |
case VNC_ENCODING_COPYRECT:
|
1723 |
vs->features |= VNC_FEATURE_COPYRECT_MASK; |
1724 |
break;
|
1725 |
case VNC_ENCODING_HEXTILE:
|
1726 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
1727 |
vs->vnc_encoding = enc; |
1728 |
break;
|
1729 |
case VNC_ENCODING_ZLIB:
|
1730 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
1731 |
vs->vnc_encoding = enc; |
1732 |
break;
|
1733 |
case VNC_ENCODING_DESKTOPRESIZE:
|
1734 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
1735 |
break;
|
1736 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
1737 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
1738 |
break;
|
1739 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
1740 |
send_ext_key_event_ack(vs); |
1741 |
break;
|
1742 |
case VNC_ENCODING_AUDIO:
|
1743 |
send_ext_audio_ack(vs); |
1744 |
break;
|
1745 |
case VNC_ENCODING_WMVi:
|
1746 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
1747 |
break;
|
1748 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
1749 |
vs->tight_compression = (enc & 0x0F);
|
1750 |
break;
|
1751 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
1752 |
vs->tight_quality = (enc & 0x0F);
|
1753 |
break;
|
1754 |
default:
|
1755 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
1756 |
break;
|
1757 |
} |
1758 |
} |
1759 |
|
1760 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1761 |
} |
1762 |
|
1763 |
static void set_pixel_conversion(VncState *vs) |
1764 |
{ |
1765 |
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
1766 |
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
1767 |
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
1768 |
vs->write_pixels = vnc_write_pixels_copy; |
1769 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1770 |
case 8: |
1771 |
vs->send_hextile_tile = send_hextile_tile_8; |
1772 |
break;
|
1773 |
case 16: |
1774 |
vs->send_hextile_tile = send_hextile_tile_16; |
1775 |
break;
|
1776 |
case 32: |
1777 |
vs->send_hextile_tile = send_hextile_tile_32; |
1778 |
break;
|
1779 |
} |
1780 |
} else {
|
1781 |
vs->write_pixels = vnc_write_pixels_generic; |
1782 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1783 |
case 8: |
1784 |
vs->send_hextile_tile = send_hextile_tile_generic_8; |
1785 |
break;
|
1786 |
case 16: |
1787 |
vs->send_hextile_tile = send_hextile_tile_generic_16; |
1788 |
break;
|
1789 |
case 32: |
1790 |
vs->send_hextile_tile = send_hextile_tile_generic_32; |
1791 |
break;
|
1792 |
} |
1793 |
} |
1794 |
} |
1795 |
|
1796 |
static void set_pixel_format(VncState *vs, |
1797 |
int bits_per_pixel, int depth, |
1798 |
int big_endian_flag, int true_color_flag, |
1799 |
int red_max, int green_max, int blue_max, |
1800 |
int red_shift, int green_shift, int blue_shift) |
1801 |
{ |
1802 |
if (!true_color_flag) {
|
1803 |
vnc_client_error(vs); |
1804 |
return;
|
1805 |
} |
1806 |
|
1807 |
vs->clientds = *(vs->vd->guest.ds); |
1808 |
vs->clientds.pf.rmax = red_max; |
1809 |
count_bits(vs->clientds.pf.rbits, red_max); |
1810 |
vs->clientds.pf.rshift = red_shift; |
1811 |
vs->clientds.pf.rmask = red_max << red_shift; |
1812 |
vs->clientds.pf.gmax = green_max; |
1813 |
count_bits(vs->clientds.pf.gbits, green_max); |
1814 |
vs->clientds.pf.gshift = green_shift; |
1815 |
vs->clientds.pf.gmask = green_max << green_shift; |
1816 |
vs->clientds.pf.bmax = blue_max; |
1817 |
count_bits(vs->clientds.pf.bbits, blue_max); |
1818 |
vs->clientds.pf.bshift = blue_shift; |
1819 |
vs->clientds.pf.bmask = blue_max << blue_shift; |
1820 |
vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
1821 |
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
1822 |
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
1823 |
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
1824 |
|
1825 |
set_pixel_conversion(vs); |
1826 |
|
1827 |
vga_hw_invalidate(); |
1828 |
vga_hw_update(); |
1829 |
} |
1830 |
|
1831 |
static void pixel_format_message (VncState *vs) { |
1832 |
char pad[3] = { 0, 0, 0 }; |
1833 |
|
1834 |
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
1835 |
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
1836 |
|
1837 |
#ifdef HOST_WORDS_BIGENDIAN
|
1838 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
1839 |
#else
|
1840 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
1841 |
#endif
|
1842 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
1843 |
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
1844 |
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
1845 |
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
1846 |
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
1847 |
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
1848 |
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
1849 |
if (vs->ds->surface->pf.bits_per_pixel == 32) |
1850 |
vs->send_hextile_tile = send_hextile_tile_32; |
1851 |
else if (vs->ds->surface->pf.bits_per_pixel == 16) |
1852 |
vs->send_hextile_tile = send_hextile_tile_16; |
1853 |
else if (vs->ds->surface->pf.bits_per_pixel == 8) |
1854 |
vs->send_hextile_tile = send_hextile_tile_8; |
1855 |
vs->clientds = *(vs->ds->surface); |
1856 |
vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG; |
1857 |
vs->write_pixels = vnc_write_pixels_copy; |
1858 |
|
1859 |
vnc_write(vs, pad, 3); /* padding */ |
1860 |
} |
1861 |
|
1862 |
static void vnc_dpy_setdata(DisplayState *ds) |
1863 |
{ |
1864 |
/* We don't have to do anything */
|
1865 |
} |
1866 |
|
1867 |
static void vnc_colordepth(VncState *vs) |
1868 |
{ |
1869 |
if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
|
1870 |
/* Sending a WMVi message to notify the client*/
|
1871 |
vnc_write_u8(vs, 0); /* msg id */ |
1872 |
vnc_write_u8(vs, 0);
|
1873 |
vnc_write_u16(vs, 1); /* number of rects */ |
1874 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
1875 |
ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
1876 |
pixel_format_message(vs); |
1877 |
vnc_flush(vs); |
1878 |
} else {
|
1879 |
set_pixel_conversion(vs); |
1880 |
} |
1881 |
} |
1882 |
|
1883 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
1884 |
{ |
1885 |
int i;
|
1886 |
uint16_t limit; |
1887 |
VncDisplay *vd = vs->vd; |
1888 |
|
1889 |
if (data[0] > 3) { |
1890 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
1891 |
if (!qemu_timer_expired(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval))
|
1892 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
1893 |
} |
1894 |
|
1895 |
switch (data[0]) { |
1896 |
case 0: |
1897 |
if (len == 1) |
1898 |
return 20; |
1899 |
|
1900 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
1901 |
read_u8(data, 6), read_u8(data, 7), |
1902 |
read_u16(data, 8), read_u16(data, 10), |
1903 |
read_u16(data, 12), read_u8(data, 14), |
1904 |
read_u8(data, 15), read_u8(data, 16)); |
1905 |
break;
|
1906 |
case 2: |
1907 |
if (len == 1) |
1908 |
return 4; |
1909 |
|
1910 |
if (len == 4) { |
1911 |
limit = read_u16(data, 2);
|
1912 |
if (limit > 0) |
1913 |
return 4 + (limit * 4); |
1914 |
} else
|
1915 |
limit = read_u16(data, 2);
|
1916 |
|
1917 |
for (i = 0; i < limit; i++) { |
1918 |
int32_t val = read_s32(data, 4 + (i * 4)); |
1919 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
1920 |
} |
1921 |
|
1922 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
1923 |
break;
|
1924 |
case 3: |
1925 |
if (len == 1) |
1926 |
return 10; |
1927 |
|
1928 |
framebuffer_update_request(vs, |
1929 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
1930 |
read_u16(data, 6), read_u16(data, 8)); |
1931 |
break;
|
1932 |
case 4: |
1933 |
if (len == 1) |
1934 |
return 8; |
1935 |
|
1936 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
1937 |
break;
|
1938 |
case 5: |
1939 |
if (len == 1) |
1940 |
return 6; |
1941 |
|
1942 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
1943 |
break;
|
1944 |
case 6: |
1945 |
if (len == 1) |
1946 |
return 8; |
1947 |
|
1948 |
if (len == 8) { |
1949 |
uint32_t dlen = read_u32(data, 4);
|
1950 |
if (dlen > 0) |
1951 |
return 8 + dlen; |
1952 |
} |
1953 |
|
1954 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
1955 |
break;
|
1956 |
case 255: |
1957 |
if (len == 1) |
1958 |
return 2; |
1959 |
|
1960 |
switch (read_u8(data, 1)) { |
1961 |
case 0: |
1962 |
if (len == 2) |
1963 |
return 12; |
1964 |
|
1965 |
ext_key_event(vs, read_u16(data, 2),
|
1966 |
read_u32(data, 4), read_u32(data, 8)); |
1967 |
break;
|
1968 |
case 1: |
1969 |
if (len == 2) |
1970 |
return 4; |
1971 |
|
1972 |
switch (read_u16 (data, 2)) { |
1973 |
case 0: |
1974 |
audio_add(vs); |
1975 |
break;
|
1976 |
case 1: |
1977 |
audio_del(vs); |
1978 |
break;
|
1979 |
case 2: |
1980 |
if (len == 4) |
1981 |
return 10; |
1982 |
switch (read_u8(data, 4)) { |
1983 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
1984 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
1985 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
1986 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
1987 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
1988 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
1989 |
default:
|
1990 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
1991 |
vnc_client_error(vs); |
1992 |
break;
|
1993 |
} |
1994 |
vs->as.nchannels = read_u8(data, 5);
|
1995 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
1996 |
printf("Invalid audio channel coount %d\n",
|
1997 |
read_u8(data, 5));
|
1998 |
vnc_client_error(vs); |
1999 |
break;
|
2000 |
} |
2001 |
vs->as.freq = read_u32(data, 6);
|
2002 |
break;
|
2003 |
default:
|
2004 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
2005 |
vnc_client_error(vs); |
2006 |
break;
|
2007 |
} |
2008 |
break;
|
2009 |
|
2010 |
default:
|
2011 |
printf("Msg: %d\n", read_u16(data, 0)); |
2012 |
vnc_client_error(vs); |
2013 |
break;
|
2014 |
} |
2015 |
break;
|
2016 |
default:
|
2017 |
printf("Msg: %d\n", data[0]); |
2018 |
vnc_client_error(vs); |
2019 |
break;
|
2020 |
} |
2021 |
|
2022 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2023 |
return 0; |
2024 |
} |
2025 |
|
2026 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
2027 |
{ |
2028 |
char buf[1024]; |
2029 |
int size;
|
2030 |
|
2031 |
vnc_write_u16(vs, ds_get_width(vs->ds)); |
2032 |
vnc_write_u16(vs, ds_get_height(vs->ds)); |
2033 |
|
2034 |
pixel_format_message(vs); |
2035 |
|
2036 |
if (qemu_name)
|
2037 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
2038 |
else
|
2039 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
2040 |
|
2041 |
vnc_write_u32(vs, size); |
2042 |
vnc_write(vs, buf, size); |
2043 |
vnc_flush(vs); |
2044 |
|
2045 |
vnc_read_when(vs, protocol_client_msg, 1);
|
2046 |
|
2047 |
return 0; |
2048 |
} |
2049 |
|
2050 |
void start_client_init(VncState *vs)
|
2051 |
{ |
2052 |
vnc_read_when(vs, protocol_client_init, 1);
|
2053 |
} |
2054 |
|
2055 |
static void make_challenge(VncState *vs) |
2056 |
{ |
2057 |
int i;
|
2058 |
|
2059 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
2060 |
|
2061 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
2062 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
2063 |
} |
2064 |
|
2065 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
2066 |
{ |
2067 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
2068 |
int i, j, pwlen;
|
2069 |
unsigned char key[8]; |
2070 |
|
2071 |
if (!vs->vd->password || !vs->vd->password[0]) { |
2072 |
VNC_DEBUG("No password configured on server");
|
2073 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2074 |
if (vs->minor >= 8) { |
2075 |
static const char err[] = "Authentication failed"; |
2076 |
vnc_write_u32(vs, sizeof(err));
|
2077 |
vnc_write(vs, err, sizeof(err));
|
2078 |
} |
2079 |
vnc_flush(vs); |
2080 |
vnc_client_error(vs); |
2081 |
return 0; |
2082 |
} |
2083 |
|
2084 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
2085 |
|
2086 |
/* Calculate the expected challenge response */
|
2087 |
pwlen = strlen(vs->vd->password); |
2088 |
for (i=0; i<sizeof(key); i++) |
2089 |
key[i] = i<pwlen ? vs->vd->password[i] : 0;
|
2090 |
deskey(key, EN0); |
2091 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
2092 |
des(response+j, response+j); |
2093 |
|
2094 |
/* Compare expected vs actual challenge response */
|
2095 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
2096 |
VNC_DEBUG("Client challenge reponse did not match\n");
|
2097 |
vnc_write_u32(vs, 1); /* Reject auth */ |
2098 |
if (vs->minor >= 8) { |
2099 |
static const char err[] = "Authentication failed"; |
2100 |
vnc_write_u32(vs, sizeof(err));
|
2101 |
vnc_write(vs, err, sizeof(err));
|
2102 |
} |
2103 |
vnc_flush(vs); |
2104 |
vnc_client_error(vs); |
2105 |
} else {
|
2106 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
2107 |
vnc_write_u32(vs, 0); /* Accept auth */ |
2108 |
vnc_flush(vs); |
2109 |
|
2110 |
start_client_init(vs); |
2111 |
} |
2112 |
return 0; |
2113 |
} |
2114 |
|
2115 |
void start_auth_vnc(VncState *vs)
|
2116 |
{ |
2117 |
make_challenge(vs); |
2118 |
/* Send client a 'random' challenge */
|
2119 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
2120 |
vnc_flush(vs); |
2121 |
|
2122 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
2123 |
} |
2124 |
|
2125 |
|
2126 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
2127 |
{ |
2128 |
/* We only advertise 1 auth scheme at a time, so client
|
2129 |
* must pick the one we sent. Verify this */
|
2130 |
if (data[0] != vs->vd->auth) { /* Reject auth */ |
2131 |
VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
2132 |
vnc_write_u32(vs, 1);
|
2133 |
if (vs->minor >= 8) { |
2134 |
static const char err[] = "Authentication failed"; |
2135 |
vnc_write_u32(vs, sizeof(err));
|
2136 |
vnc_write(vs, err, sizeof(err));
|
2137 |
} |
2138 |
vnc_client_error(vs); |
2139 |
} else { /* Accept requested auth */ |
2140 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
2141 |
switch (vs->vd->auth) {
|
2142 |
case VNC_AUTH_NONE:
|
2143 |
VNC_DEBUG("Accept auth none\n");
|
2144 |
if (vs->minor >= 8) { |
2145 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
2146 |
vnc_flush(vs); |
2147 |
} |
2148 |
start_client_init(vs); |
2149 |
break;
|
2150 |
|
2151 |
case VNC_AUTH_VNC:
|
2152 |
VNC_DEBUG("Start VNC auth\n");
|
2153 |
start_auth_vnc(vs); |
2154 |
break;
|
2155 |
|
2156 |
#ifdef CONFIG_VNC_TLS
|
2157 |
case VNC_AUTH_VENCRYPT:
|
2158 |
VNC_DEBUG("Accept VeNCrypt auth\n");;
|
2159 |
start_auth_vencrypt(vs); |
2160 |
break;
|
2161 |
#endif /* CONFIG_VNC_TLS */ |
2162 |
|
2163 |
#ifdef CONFIG_VNC_SASL
|
2164 |
case VNC_AUTH_SASL:
|
2165 |
VNC_DEBUG("Accept SASL auth\n");
|
2166 |
start_auth_sasl(vs); |
2167 |
break;
|
2168 |
#endif /* CONFIG_VNC_SASL */ |
2169 |
|
2170 |
default: /* Should not be possible, but just in case */ |
2171 |
VNC_DEBUG("Reject auth %d server code bug\n", vs->vd->auth);
|
2172 |
vnc_write_u8(vs, 1);
|
2173 |
if (vs->minor >= 8) { |
2174 |
static const char err[] = "Authentication failed"; |
2175 |
vnc_write_u32(vs, sizeof(err));
|
2176 |
vnc_write(vs, err, sizeof(err));
|
2177 |
} |
2178 |
vnc_client_error(vs); |
2179 |
} |
2180 |
} |
2181 |
return 0; |
2182 |
} |
2183 |
|
2184 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
2185 |
{ |
2186 |
char local[13]; |
2187 |
|
2188 |
memcpy(local, version, 12);
|
2189 |
local[12] = 0; |
2190 |
|
2191 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
2192 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
2193 |
vnc_client_error(vs); |
2194 |
return 0; |
2195 |
} |
2196 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
2197 |
if (vs->major != 3 || |
2198 |
(vs->minor != 3 &&
|
2199 |
vs->minor != 4 &&
|
2200 |
vs->minor != 5 &&
|
2201 |
vs->minor != 7 &&
|
2202 |
vs->minor != 8)) {
|
2203 |
VNC_DEBUG("Unsupported client version\n");
|
2204 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2205 |
vnc_flush(vs); |
2206 |
vnc_client_error(vs); |
2207 |
return 0; |
2208 |
} |
2209 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
2210 |
* as equivalent to v3.3 by servers
|
2211 |
*/
|
2212 |
if (vs->minor == 4 || vs->minor == 5) |
2213 |
vs->minor = 3;
|
2214 |
|
2215 |
if (vs->minor == 3) { |
2216 |
if (vs->vd->auth == VNC_AUTH_NONE) {
|
2217 |
VNC_DEBUG("Tell client auth none\n");
|
2218 |
vnc_write_u32(vs, vs->vd->auth); |
2219 |
vnc_flush(vs); |
2220 |
start_client_init(vs); |
2221 |
} else if (vs->vd->auth == VNC_AUTH_VNC) { |
2222 |
VNC_DEBUG("Tell client VNC auth\n");
|
2223 |
vnc_write_u32(vs, vs->vd->auth); |
2224 |
vnc_flush(vs); |
2225 |
start_auth_vnc(vs); |
2226 |
} else {
|
2227 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->auth);
|
2228 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2229 |
vnc_flush(vs); |
2230 |
vnc_client_error(vs); |
2231 |
} |
2232 |
} else {
|
2233 |
VNC_DEBUG("Telling client we support auth %d\n", vs->vd->auth);
|
2234 |
vnc_write_u8(vs, 1); /* num auth */ |
2235 |
vnc_write_u8(vs, vs->vd->auth); |
2236 |
vnc_read_when(vs, protocol_client_auth, 1);
|
2237 |
vnc_flush(vs); |
2238 |
} |
2239 |
|
2240 |
return 0; |
2241 |
} |
2242 |
|
2243 |
static int vnc_refresh_server_surface(VncDisplay *vd) |
2244 |
{ |
2245 |
int y;
|
2246 |
uint8_t *guest_row; |
2247 |
uint8_t *server_row; |
2248 |
int cmp_bytes;
|
2249 |
uint32_t width_mask[VNC_DIRTY_WORDS]; |
2250 |
VncState *vs = NULL;
|
2251 |
int has_dirty = 0; |
2252 |
|
2253 |
/*
|
2254 |
* Walk through the guest dirty map.
|
2255 |
* Check and copy modified bits from guest to server surface.
|
2256 |
* Update server dirty map.
|
2257 |
*/
|
2258 |
vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS);
|
2259 |
cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds);
|
2260 |
guest_row = vd->guest.ds->data; |
2261 |
server_row = vd->server->data; |
2262 |
for (y = 0; y < vd->guest.ds->height; y++) { |
2263 |
if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) {
|
2264 |
int x;
|
2265 |
uint8_t *guest_ptr; |
2266 |
uint8_t *server_ptr; |
2267 |
|
2268 |
guest_ptr = guest_row; |
2269 |
server_ptr = server_row; |
2270 |
|
2271 |
for (x = 0; x < vd->guest.ds->width; |
2272 |
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
|
2273 |
if (!vnc_get_bit(vd->guest.dirty[y], (x / 16))) |
2274 |
continue;
|
2275 |
vnc_clear_bit(vd->guest.dirty[y], (x / 16));
|
2276 |
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
2277 |
continue;
|
2278 |
memcpy(server_ptr, guest_ptr, cmp_bytes); |
2279 |
vs = vd->clients; |
2280 |
while (vs != NULL) { |
2281 |
vnc_set_bit(vs->dirty[y], (x / 16));
|
2282 |
vs = vs->next; |
2283 |
} |
2284 |
has_dirty++; |
2285 |
} |
2286 |
} |
2287 |
guest_row += ds_get_linesize(vd->ds); |
2288 |
server_row += ds_get_linesize(vd->ds); |
2289 |
} |
2290 |
return has_dirty;
|
2291 |
} |
2292 |
|
2293 |
static void vnc_refresh(void *opaque) |
2294 |
{ |
2295 |
VncDisplay *vd = opaque; |
2296 |
VncState *vs = NULL;
|
2297 |
int has_dirty = 0, rects = 0; |
2298 |
|
2299 |
vga_hw_update(); |
2300 |
|
2301 |
has_dirty = vnc_refresh_server_surface(vd); |
2302 |
|
2303 |
vs = vd->clients; |
2304 |
while (vs != NULL) { |
2305 |
rects += vnc_update_client(vs, has_dirty); |
2306 |
vs = vs->next; |
2307 |
} |
2308 |
/* vd->timer could be NULL now if the last client disconnected,
|
2309 |
* in this case don't update the timer */
|
2310 |
if (vd->timer == NULL) |
2311 |
return;
|
2312 |
|
2313 |
if (has_dirty && rects) {
|
2314 |
vd->timer_interval /= 2;
|
2315 |
if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE)
|
2316 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2317 |
} else {
|
2318 |
vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
2319 |
if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX)
|
2320 |
vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
2321 |
} |
2322 |
qemu_mod_timer(vd->timer, qemu_get_clock(rt_clock) + vd->timer_interval); |
2323 |
} |
2324 |
|
2325 |
static void vnc_init_timer(VncDisplay *vd) |
2326 |
{ |
2327 |
vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
2328 |
if (vd->timer == NULL && vd->clients != NULL) { |
2329 |
vd->timer = qemu_new_timer(rt_clock, vnc_refresh, vd); |
2330 |
vnc_refresh(vd); |
2331 |
} |
2332 |
} |
2333 |
|
2334 |
static void vnc_remove_timer(VncDisplay *vd) |
2335 |
{ |
2336 |
if (vd->timer != NULL && vd->clients == NULL) { |
2337 |
qemu_del_timer(vd->timer); |
2338 |
qemu_free_timer(vd->timer); |
2339 |
vd->timer = NULL;
|
2340 |
} |
2341 |
} |
2342 |
|
2343 |
static void vnc_connect(VncDisplay *vd, int csock) |
2344 |
{ |
2345 |
VncState *vs = qemu_mallocz(sizeof(VncState));
|
2346 |
vs->csock = csock; |
2347 |
|
2348 |
VNC_DEBUG("New client on socket %d\n", csock);
|
2349 |
dcl->idle = 0;
|
2350 |
socket_set_nonblock(vs->csock); |
2351 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
2352 |
|
2353 |
vs->vd = vd; |
2354 |
vs->ds = vd->ds; |
2355 |
vs->last_x = -1;
|
2356 |
vs->last_y = -1;
|
2357 |
|
2358 |
vs->as.freq = 44100;
|
2359 |
vs->as.nchannels = 2;
|
2360 |
vs->as.fmt = AUD_FMT_S16; |
2361 |
vs->as.endianness = 0;
|
2362 |
|
2363 |
vs->next = vd->clients; |
2364 |
vd->clients = vs; |
2365 |
|
2366 |
vga_hw_update(); |
2367 |
|
2368 |
vnc_write(vs, "RFB 003.008\n", 12); |
2369 |
vnc_flush(vs); |
2370 |
vnc_read_when(vs, protocol_version, 12);
|
2371 |
reset_keys(vs); |
2372 |
|
2373 |
vnc_init_timer(vd); |
2374 |
|
2375 |
/* vs might be free()ed here */
|
2376 |
} |
2377 |
|
2378 |
static void vnc_listen_read(void *opaque) |
2379 |
{ |
2380 |
VncDisplay *vs = opaque; |
2381 |
struct sockaddr_in addr;
|
2382 |
socklen_t addrlen = sizeof(addr);
|
2383 |
|
2384 |
/* Catch-up */
|
2385 |
vga_hw_update(); |
2386 |
|
2387 |
int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
2388 |
if (csock != -1) { |
2389 |
vnc_connect(vs, csock); |
2390 |
} |
2391 |
} |
2392 |
|
2393 |
void vnc_display_init(DisplayState *ds)
|
2394 |
{ |
2395 |
VncDisplay *vs = qemu_mallocz(sizeof(*vs));
|
2396 |
|
2397 |
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
|
2398 |
|
2399 |
ds->opaque = vs; |
2400 |
dcl->idle = 1;
|
2401 |
vnc_display = vs; |
2402 |
|
2403 |
vs->lsock = -1;
|
2404 |
|
2405 |
vs->ds = ds; |
2406 |
|
2407 |
if (keyboard_layout)
|
2408 |
vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
2409 |
else
|
2410 |
vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us");
|
2411 |
|
2412 |
if (!vs->kbd_layout)
|
2413 |
exit(1);
|
2414 |
|
2415 |
dcl->dpy_copy = vnc_dpy_copy; |
2416 |
dcl->dpy_update = vnc_dpy_update; |
2417 |
dcl->dpy_resize = vnc_dpy_resize; |
2418 |
dcl->dpy_setdata = vnc_dpy_setdata; |
2419 |
register_displaychangelistener(ds, dcl); |
2420 |
} |
2421 |
|
2422 |
|
2423 |
void vnc_display_close(DisplayState *ds)
|
2424 |
{ |
2425 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2426 |
|
2427 |
if (!vs)
|
2428 |
return;
|
2429 |
if (vs->display) {
|
2430 |
qemu_free(vs->display); |
2431 |
vs->display = NULL;
|
2432 |
} |
2433 |
if (vs->lsock != -1) { |
2434 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
2435 |
close(vs->lsock); |
2436 |
vs->lsock = -1;
|
2437 |
} |
2438 |
vs->auth = VNC_AUTH_INVALID; |
2439 |
#ifdef CONFIG_VNC_TLS
|
2440 |
vs->subauth = VNC_AUTH_INVALID; |
2441 |
vs->tls.x509verify = 0;
|
2442 |
#endif
|
2443 |
} |
2444 |
|
2445 |
int vnc_display_password(DisplayState *ds, const char *password) |
2446 |
{ |
2447 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2448 |
|
2449 |
if (!vs) {
|
2450 |
return -1; |
2451 |
} |
2452 |
|
2453 |
if (vs->password) {
|
2454 |
qemu_free(vs->password); |
2455 |
vs->password = NULL;
|
2456 |
} |
2457 |
if (password && password[0]) { |
2458 |
if (!(vs->password = qemu_strdup(password)))
|
2459 |
return -1; |
2460 |
if (vs->auth == VNC_AUTH_NONE) {
|
2461 |
vs->auth = VNC_AUTH_VNC; |
2462 |
} |
2463 |
} else {
|
2464 |
vs->auth = VNC_AUTH_NONE; |
2465 |
} |
2466 |
|
2467 |
return 0; |
2468 |
} |
2469 |
|
2470 |
char *vnc_display_local_addr(DisplayState *ds)
|
2471 |
{ |
2472 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2473 |
|
2474 |
return vnc_socket_local_addr("%s:%s", vs->lsock); |
2475 |
} |
2476 |
|
2477 |
int vnc_display_open(DisplayState *ds, const char *display) |
2478 |
{ |
2479 |
VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
2480 |
const char *options; |
2481 |
int password = 0; |
2482 |
int reverse = 0; |
2483 |
int to_port = 0; |
2484 |
#ifdef CONFIG_VNC_TLS
|
2485 |
int tls = 0, x509 = 0; |
2486 |
#endif
|
2487 |
#ifdef CONFIG_VNC_SASL
|
2488 |
int sasl = 0; |
2489 |
int saslErr;
|
2490 |
#endif
|
2491 |
int acl = 0; |
2492 |
|
2493 |
if (!vnc_display)
|
2494 |
return -1; |
2495 |
vnc_display_close(ds); |
2496 |
if (strcmp(display, "none") == 0) |
2497 |
return 0; |
2498 |
|
2499 |
if (!(vs->display = strdup(display)))
|
2500 |
return -1; |
2501 |
|
2502 |
options = display; |
2503 |
while ((options = strchr(options, ','))) { |
2504 |
options++; |
2505 |
if (strncmp(options, "password", 8) == 0) { |
2506 |
password = 1; /* Require password auth */ |
2507 |
} else if (strncmp(options, "reverse", 7) == 0) { |
2508 |
reverse = 1;
|
2509 |
} else if (strncmp(options, "to=", 3) == 0) { |
2510 |
to_port = atoi(options+3) + 5900; |
2511 |
#ifdef CONFIG_VNC_SASL
|
2512 |
} else if (strncmp(options, "sasl", 4) == 0) { |
2513 |
sasl = 1; /* Require SASL auth */ |
2514 |
#endif
|
2515 |
#ifdef CONFIG_VNC_TLS
|
2516 |
} else if (strncmp(options, "tls", 3) == 0) { |
2517 |
tls = 1; /* Require TLS */ |
2518 |
} else if (strncmp(options, "x509", 4) == 0) { |
2519 |
char *start, *end;
|
2520 |
x509 = 1; /* Require x509 certificates */ |
2521 |
if (strncmp(options, "x509verify", 10) == 0) |
2522 |
vs->tls.x509verify = 1; /* ...and verify client certs */ |
2523 |
|
2524 |
/* Now check for 'x509=/some/path' postfix
|
2525 |
* and use that to setup x509 certificate/key paths */
|
2526 |
start = strchr(options, '=');
|
2527 |
end = strchr(options, ',');
|
2528 |
if (start && (!end || (start < end))) {
|
2529 |
int len = end ? end-(start+1) : strlen(start+1); |
2530 |
char *path = qemu_strndup(start + 1, len); |
2531 |
|
2532 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
2533 |
if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
2534 |
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
2535 |
qemu_free(path); |
2536 |
qemu_free(vs->display); |
2537 |
vs->display = NULL;
|
2538 |
return -1; |
2539 |
} |
2540 |
qemu_free(path); |
2541 |
} else {
|
2542 |
fprintf(stderr, "No certificate path provided\n");
|
2543 |
qemu_free(vs->display); |
2544 |
vs->display = NULL;
|
2545 |
return -1; |
2546 |
} |
2547 |
#endif
|
2548 |
} else if (strncmp(options, "acl", 3) == 0) { |
2549 |
acl = 1;
|
2550 |
} |
2551 |
} |
2552 |
|
2553 |
#ifdef CONFIG_VNC_TLS
|
2554 |
if (acl && x509 && vs->tls.x509verify) {
|
2555 |
if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
2556 |
fprintf(stderr, "Failed to create x509 dname ACL\n");
|
2557 |
exit(1);
|
2558 |
} |
2559 |
} |
2560 |
#endif
|
2561 |
#ifdef CONFIG_VNC_SASL
|
2562 |
if (acl && sasl) {
|
2563 |
if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
2564 |
fprintf(stderr, "Failed to create username ACL\n");
|
2565 |
exit(1);
|
2566 |
} |
2567 |
} |
2568 |
#endif
|
2569 |
|
2570 |
/*
|
2571 |
* Combinations we support here:
|
2572 |
*
|
2573 |
* - no-auth (clear text, no auth)
|
2574 |
* - password (clear text, weak auth)
|
2575 |
* - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI)
|
2576 |
* - tls (encrypt, weak anonymous creds, no auth)
|
2577 |
* - tls + password (encrypt, weak anonymous creds, weak auth)
|
2578 |
* - tls + sasl (encrypt, weak anonymous creds, good auth)
|
2579 |
* - tls + x509 (encrypt, good x509 creds, no auth)
|
2580 |
* - tls + x509 + password (encrypt, good x509 creds, weak auth)
|
2581 |
* - tls + x509 + sasl (encrypt, good x509 creds, good auth)
|
2582 |
*
|
2583 |
* NB1. TLS is a stackable auth scheme.
|
2584 |
* NB2. the x509 schemes have option to validate a client cert dname
|
2585 |
*/
|
2586 |
if (password) {
|
2587 |
#ifdef CONFIG_VNC_TLS
|
2588 |
if (tls) {
|
2589 |
vs->auth = VNC_AUTH_VENCRYPT; |
2590 |
if (x509) {
|
2591 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
2592 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
2593 |
} else {
|
2594 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
2595 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
2596 |
} |
2597 |
} else {
|
2598 |
#endif /* CONFIG_VNC_TLS */ |
2599 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
2600 |
vs->auth = VNC_AUTH_VNC; |
2601 |
#ifdef CONFIG_VNC_TLS
|
2602 |
vs->subauth = VNC_AUTH_INVALID; |
2603 |
} |
2604 |
#endif /* CONFIG_VNC_TLS */ |
2605 |
#ifdef CONFIG_VNC_SASL
|
2606 |
} else if (sasl) { |
2607 |
#ifdef CONFIG_VNC_TLS
|
2608 |
if (tls) {
|
2609 |
vs->auth = VNC_AUTH_VENCRYPT; |
2610 |
if (x509) {
|
2611 |
VNC_DEBUG("Initializing VNC server with x509 SASL auth\n");
|
2612 |
vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
2613 |
} else {
|
2614 |
VNC_DEBUG("Initializing VNC server with TLS SASL auth\n");
|
2615 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
2616 |
} |
2617 |
} else {
|
2618 |
#endif /* CONFIG_VNC_TLS */ |
2619 |
VNC_DEBUG("Initializing VNC server with SASL auth\n");
|
2620 |
vs->auth = VNC_AUTH_SASL; |
2621 |
#ifdef CONFIG_VNC_TLS
|
2622 |
vs->subauth = VNC_AUTH_INVALID; |
2623 |
} |
2624 |
#endif /* CONFIG_VNC_TLS */ |
2625 |
#endif /* CONFIG_VNC_SASL */ |
2626 |
} else {
|
2627 |
#ifdef CONFIG_VNC_TLS
|
2628 |
if (tls) {
|
2629 |
vs->auth = VNC_AUTH_VENCRYPT; |
2630 |
if (x509) {
|
2631 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
2632 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
2633 |
} else {
|
2634 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
2635 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
2636 |
} |
2637 |
} else {
|
2638 |
#endif
|
2639 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
2640 |
vs->auth = VNC_AUTH_NONE; |
2641 |
#ifdef CONFIG_VNC_TLS
|
2642 |
vs->subauth = VNC_AUTH_INVALID; |
2643 |
} |
2644 |
#endif
|
2645 |
} |
2646 |
|
2647 |
#ifdef CONFIG_VNC_SASL
|
2648 |
if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
2649 |
fprintf(stderr, "Failed to initialize SASL auth %s",
|
2650 |
sasl_errstring(saslErr, NULL, NULL)); |
2651 |
free(vs->display); |
2652 |
vs->display = NULL;
|
2653 |
return -1; |
2654 |
} |
2655 |
#endif
|
2656 |
|
2657 |
if (reverse) {
|
2658 |
/* connect to viewer */
|
2659 |
if (strncmp(display, "unix:", 5) == 0) |
2660 |
vs->lsock = unix_connect(display+5);
|
2661 |
else
|
2662 |
vs->lsock = inet_connect(display, SOCK_STREAM); |
2663 |
if (-1 == vs->lsock) { |
2664 |
free(vs->display); |
2665 |
vs->display = NULL;
|
2666 |
return -1; |
2667 |
} else {
|
2668 |
int csock = vs->lsock;
|
2669 |
vs->lsock = -1;
|
2670 |
vnc_connect(vs, csock); |
2671 |
} |
2672 |
return 0; |
2673 |
|
2674 |
} else {
|
2675 |
/* listen for connects */
|
2676 |
char *dpy;
|
2677 |
dpy = qemu_malloc(256);
|
2678 |
if (strncmp(display, "unix:", 5) == 0) { |
2679 |
pstrcpy(dpy, 256, "unix:"); |
2680 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
2681 |
} else {
|
2682 |
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900); |
2683 |
} |
2684 |
if (-1 == vs->lsock) { |
2685 |
free(dpy); |
2686 |
return -1; |
2687 |
} else {
|
2688 |
free(vs->display); |
2689 |
vs->display = dpy; |
2690 |
} |
2691 |
} |
2692 |
return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
2693 |
} |