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