| /* |
| * QEMU VNC display driver |
| * |
| * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws> |
| * Copyright (C) 2006 Fabrice Bellard |
| * Copyright (C) 2009 Red Hat, Inc |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include "vnc.h" |
| #include "vnc-jobs.h" |
| #include "sysemu.h" |
| #include "qemu_socket.h" |
| #include "qemu-timer.h" |
| #include "acl.h" |
| #include "qemu-objects.h" |
| #include "qmp-commands.h" |
| |
| #define VNC_REFRESH_INTERVAL_BASE 30 |
| #define VNC_REFRESH_INTERVAL_INC 50 |
| #define VNC_REFRESH_INTERVAL_MAX 2000 |
| static const struct timeval VNC_REFRESH_STATS = { 0, 500000 }; |
| static const struct timeval VNC_REFRESH_LOSSY = { 2, 0 }; |
| |
| #include "vnc_keysym.h" |
| #include "d3des.h" |
| |
| static VncDisplay *vnc_display; /* needed for info vnc */ |
| static DisplayChangeListener *dcl; |
| |
| static int vnc_cursor_define(VncState *vs); |
| static void vnc_release_modifiers(VncState *vs); |
| |
| static void vnc_set_share_mode(VncState *vs, VncShareMode mode) |
| { |
| #ifdef _VNC_DEBUG |
| static const char *mn[] = { |
| [0] = "undefined", |
| [VNC_SHARE_MODE_CONNECTING] = "connecting", |
| [VNC_SHARE_MODE_SHARED] = "shared", |
| [VNC_SHARE_MODE_EXCLUSIVE] = "exclusive", |
| [VNC_SHARE_MODE_DISCONNECTED] = "disconnected", |
| }; |
| fprintf(stderr, "%s/%d: %s -> %s\n", __func__, |
| vs->csock, mn[vs->share_mode], mn[mode]); |
| #endif |
| |
| if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) { |
| vs->vd->num_exclusive--; |
| } |
| vs->share_mode = mode; |
| if (vs->share_mode == VNC_SHARE_MODE_EXCLUSIVE) { |
| vs->vd->num_exclusive++; |
| } |
| } |
| |
| static char *addr_to_string(const char *format, |
| struct sockaddr_storage *sa, |
| socklen_t salen) { |
| char *addr; |
| char host[NI_MAXHOST]; |
| char serv[NI_MAXSERV]; |
| int err; |
| size_t addrlen; |
| |
| if ((err = getnameinfo((struct sockaddr *)sa, salen, |
| host, sizeof(host), |
| serv, sizeof(serv), |
| NI_NUMERICHOST | NI_NUMERICSERV)) != 0) { |
| VNC_DEBUG("Cannot resolve address %d: %s\n", |
| err, gai_strerror(err)); |
| return NULL; |
| } |
| |
| /* Enough for the existing format + the 2 vars we're |
| * substituting in. */ |
| addrlen = strlen(format) + strlen(host) + strlen(serv); |
| addr = g_malloc(addrlen + 1); |
| snprintf(addr, addrlen, format, host, serv); |
| addr[addrlen] = '\0'; |
| |
| return addr; |
| } |
| |
| |
| char *vnc_socket_local_addr(const char *format, int fd) { |
| struct sockaddr_storage sa; |
| socklen_t salen; |
| |
| salen = sizeof(sa); |
| if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) |
| return NULL; |
| |
| return addr_to_string(format, &sa, salen); |
| } |
| |
| char *vnc_socket_remote_addr(const char *format, int fd) { |
| struct sockaddr_storage sa; |
| socklen_t salen; |
| |
| salen = sizeof(sa); |
| if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) |
| return NULL; |
| |
| return addr_to_string(format, &sa, salen); |
| } |
| |
| static int put_addr_qdict(QDict *qdict, struct sockaddr_storage *sa, |
| socklen_t salen) |
| { |
| char host[NI_MAXHOST]; |
| char serv[NI_MAXSERV]; |
| int err; |
| |
| if ((err = getnameinfo((struct sockaddr *)sa, salen, |
| host, sizeof(host), |
| serv, sizeof(serv), |
| NI_NUMERICHOST | NI_NUMERICSERV)) != 0) { |
| VNC_DEBUG("Cannot resolve address %d: %s\n", |
| err, gai_strerror(err)); |
| return -1; |
| } |
| |
| qdict_put(qdict, "host", qstring_from_str(host)); |
| qdict_put(qdict, "service", qstring_from_str(serv)); |
| qdict_put(qdict, "family",qstring_from_str(inet_strfamily(sa->ss_family))); |
| |
| return 0; |
| } |
| |
| static int vnc_server_addr_put(QDict *qdict, int fd) |
| { |
| struct sockaddr_storage sa; |
| socklen_t salen; |
| |
| salen = sizeof(sa); |
| if (getsockname(fd, (struct sockaddr*)&sa, &salen) < 0) { |
| return -1; |
| } |
| |
| return put_addr_qdict(qdict, &sa, salen); |
| } |
| |
| static int vnc_qdict_remote_addr(QDict *qdict, int fd) |
| { |
| struct sockaddr_storage sa; |
| socklen_t salen; |
| |
| salen = sizeof(sa); |
| if (getpeername(fd, (struct sockaddr*)&sa, &salen) < 0) { |
| return -1; |
| } |
| |
| return put_addr_qdict(qdict, &sa, salen); |
| } |
| |
| static const char *vnc_auth_name(VncDisplay *vd) { |
| switch (vd->auth) { |
| case VNC_AUTH_INVALID: |
| return "invalid"; |
| case VNC_AUTH_NONE: |
| return "none"; |
| case VNC_AUTH_VNC: |
| return "vnc"; |
| case VNC_AUTH_RA2: |
| return "ra2"; |
| case VNC_AUTH_RA2NE: |
| return "ra2ne"; |
| case VNC_AUTH_TIGHT: |
| return "tight"; |
| case VNC_AUTH_ULTRA: |
| return "ultra"; |
| case VNC_AUTH_TLS: |
| return "tls"; |
| case VNC_AUTH_VENCRYPT: |
| #ifdef CONFIG_VNC_TLS |
| switch (vd->subauth) { |
| case VNC_AUTH_VENCRYPT_PLAIN: |
| return "vencrypt+plain"; |
| case VNC_AUTH_VENCRYPT_TLSNONE: |
| return "vencrypt+tls+none"; |
| case VNC_AUTH_VENCRYPT_TLSVNC: |
| return "vencrypt+tls+vnc"; |
| case VNC_AUTH_VENCRYPT_TLSPLAIN: |
| return "vencrypt+tls+plain"; |
| case VNC_AUTH_VENCRYPT_X509NONE: |
| return "vencrypt+x509+none"; |
| case VNC_AUTH_VENCRYPT_X509VNC: |
| return "vencrypt+x509+vnc"; |
| case VNC_AUTH_VENCRYPT_X509PLAIN: |
| return "vencrypt+x509+plain"; |
| case VNC_AUTH_VENCRYPT_TLSSASL: |
| return "vencrypt+tls+sasl"; |
| case VNC_AUTH_VENCRYPT_X509SASL: |
| return "vencrypt+x509+sasl"; |
| default: |
| return "vencrypt"; |
| } |
| #else |
| return "vencrypt"; |
| #endif |
| case VNC_AUTH_SASL: |
| return "sasl"; |
| } |
| return "unknown"; |
| } |
| |
| static int vnc_server_info_put(QDict *qdict) |
| { |
| if (vnc_server_addr_put(qdict, vnc_display->lsock) < 0) { |
| return -1; |
| } |
| |
| qdict_put(qdict, "auth", qstring_from_str(vnc_auth_name(vnc_display))); |
| return 0; |
| } |
| |
| static void vnc_client_cache_auth(VncState *client) |
| { |
| #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL) |
| QDict *qdict; |
| #endif |
| |
| if (!client->info) { |
| return; |
| } |
| |
| #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL) |
| qdict = qobject_to_qdict(client->info); |
| #endif |
| |
| #ifdef CONFIG_VNC_TLS |
| if (client->tls.session && |
| client->tls.dname) { |
| qdict_put(qdict, "x509_dname", qstring_from_str(client->tls.dname)); |
| } |
| #endif |
| #ifdef CONFIG_VNC_SASL |
| if (client->sasl.conn && |
| client->sasl.username) { |
| qdict_put(qdict, "sasl_username", |
| qstring_from_str(client->sasl.username)); |
| } |
| #endif |
| } |
| |
| static void vnc_client_cache_addr(VncState *client) |
| { |
| QDict *qdict; |
| |
| qdict = qdict_new(); |
| if (vnc_qdict_remote_addr(qdict, client->csock) < 0) { |
| QDECREF(qdict); |
| /* XXX: how to report the error? */ |
| return; |
| } |
| |
| client->info = QOBJECT(qdict); |
| } |
| |
| static void vnc_qmp_event(VncState *vs, MonitorEvent event) |
| { |
| QDict *server; |
| QObject *data; |
| |
| if (!vs->info) { |
| return; |
| } |
| |
| server = qdict_new(); |
| if (vnc_server_info_put(server) < 0) { |
| QDECREF(server); |
| return; |
| } |
| |
| data = qobject_from_jsonf("{ 'client': %p, 'server': %p }", |
| vs->info, QOBJECT(server)); |
| |
| monitor_protocol_event(event, data); |
| |
| qobject_incref(vs->info); |
| qobject_decref(data); |
| } |
| |
| static VncClientInfo *qmp_query_vnc_client(const VncState *client) |
| { |
| struct sockaddr_storage sa; |
| socklen_t salen = sizeof(sa); |
| char host[NI_MAXHOST]; |
| char serv[NI_MAXSERV]; |
| VncClientInfo *info; |
| |
| if (getpeername(client->csock, (struct sockaddr *)&sa, &salen) < 0) { |
| return NULL; |
| } |
| |
| if (getnameinfo((struct sockaddr *)&sa, salen, |
| host, sizeof(host), |
| serv, sizeof(serv), |
| NI_NUMERICHOST | NI_NUMERICSERV) < 0) { |
| return NULL; |
| } |
| |
| info = g_malloc0(sizeof(*info)); |
| info->host = g_strdup(host); |
| info->service = g_strdup(serv); |
| info->family = g_strdup(inet_strfamily(sa.ss_family)); |
| |
| #ifdef CONFIG_VNC_TLS |
| if (client->tls.session && client->tls.dname) { |
| info->has_x509_dname = true; |
| info->x509_dname = g_strdup(client->tls.dname); |
| } |
| #endif |
| #ifdef CONFIG_VNC_SASL |
| if (client->sasl.conn && client->sasl.username) { |
| info->has_sasl_username = true; |
| info->sasl_username = g_strdup(client->sasl.username); |
| } |
| #endif |
| |
| return info; |
| } |
| |
| VncInfo *qmp_query_vnc(Error **errp) |
| { |
| VncInfo *info = g_malloc0(sizeof(*info)); |
| |
| if (vnc_display == NULL || vnc_display->display == NULL) { |
| info->enabled = false; |
| } else { |
| VncClientInfoList *cur_item = NULL; |
| struct sockaddr_storage sa; |
| socklen_t salen = sizeof(sa); |
| char host[NI_MAXHOST]; |
| char serv[NI_MAXSERV]; |
| VncState *client; |
| |
| info->enabled = true; |
| |
| /* for compatibility with the original command */ |
| info->has_clients = true; |
| |
| QTAILQ_FOREACH(client, &vnc_display->clients, next) { |
| VncClientInfoList *cinfo = g_malloc0(sizeof(*info)); |
| cinfo->value = qmp_query_vnc_client(client); |
| |
| /* XXX: waiting for the qapi to support GSList */ |
| if (!cur_item) { |
| info->clients = cur_item = cinfo; |
| } else { |
| cur_item->next = cinfo; |
| cur_item = cinfo; |
| } |
| } |
| |
| if (getsockname(vnc_display->lsock, (struct sockaddr *)&sa, |
| &salen) == -1) { |
| error_set(errp, QERR_UNDEFINED_ERROR); |
| goto out_error; |
| } |
| |
| if (getnameinfo((struct sockaddr *)&sa, salen, |
| host, sizeof(host), |
| serv, sizeof(serv), |
| NI_NUMERICHOST | NI_NUMERICSERV) < 0) { |
| error_set(errp, QERR_UNDEFINED_ERROR); |
| goto out_error; |
| } |
| |
| info->has_host = true; |
| info->host = g_strdup(host); |
| |
| info->has_service = true; |
| info->service = g_strdup(serv); |
| |
| info->has_family = true; |
| info->family = g_strdup(inet_strfamily(sa.ss_family)); |
| |
| info->has_auth = true; |
| info->auth = g_strdup(vnc_auth_name(vnc_display)); |
| } |
| |
| return info; |
| |
| out_error: |
| qapi_free_VncInfo(info); |
| return NULL; |
| } |
| |
| /* TODO |
| 1) Get the queue working for IO. |
| 2) there is some weirdness when using the -S option (the screen is grey |
| and not totally invalidated |
| 3) resolutions > 1024 |
| */ |
| |
| static int vnc_update_client(VncState *vs, int has_dirty); |
| static int vnc_update_client_sync(VncState *vs, int has_dirty); |
| static void vnc_disconnect_start(VncState *vs); |
| static void vnc_disconnect_finish(VncState *vs); |
| static void vnc_init_timer(VncDisplay *vd); |
| static void vnc_remove_timer(VncDisplay *vd); |
| |
| static void vnc_colordepth(VncState *vs); |
| static void framebuffer_update_request(VncState *vs, int incremental, |
| int x_position, int y_position, |
| int w, int h); |
| static void vnc_refresh(void *opaque); |
| static int vnc_refresh_server_surface(VncDisplay *vd); |
| |
| static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
| { |
| int i; |
| VncDisplay *vd = ds->opaque; |
| struct VncSurface *s = &vd->guest; |
| |
| h += y; |
| |
| /* round x down to ensure the loop only spans one 16-pixel block per, |
| iteration. otherwise, if (x % 16) != 0, the last iteration may span |
| two 16-pixel blocks but we only mark the first as dirty |
| */ |
| w += (x % 16); |
| x -= (x % 16); |
| |
| x = MIN(x, s->ds->width); |
| y = MIN(y, s->ds->height); |
| w = MIN(x + w, s->ds->width) - x; |
| h = MIN(h, s->ds->height); |
| |
| for (; y < h; y++) |
| for (i = 0; i < w; i += 16) |
| set_bit((x + i) / 16, s->dirty[y]); |
| } |
| |
| void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
| int32_t encoding) |
| { |
| vnc_write_u16(vs, x); |
| vnc_write_u16(vs, y); |
| vnc_write_u16(vs, w); |
| vnc_write_u16(vs, h); |
| |
| vnc_write_s32(vs, encoding); |
| } |
| |
| void buffer_reserve(Buffer *buffer, size_t len) |
| { |
| if ((buffer->capacity - buffer->offset) < len) { |
| buffer->capacity += (len + 1024); |
| buffer->buffer = g_realloc(buffer->buffer, buffer->capacity); |
| if (buffer->buffer == NULL) { |
| fprintf(stderr, "vnc: out of memory\n"); |
| exit(1); |
| } |
| } |
| } |
| |
| int buffer_empty(Buffer *buffer) |
| { |
| return buffer->offset == 0; |
| } |
| |
| uint8_t *buffer_end(Buffer *buffer) |
| { |
| return buffer->buffer + buffer->offset; |
| } |
| |
| void buffer_reset(Buffer *buffer) |
| { |
| buffer->offset = 0; |
| } |
| |
| void buffer_free(Buffer *buffer) |
| { |
| g_free(buffer->buffer); |
| buffer->offset = 0; |
| buffer->capacity = 0; |
| buffer->buffer = NULL; |
| } |
| |
| void buffer_append(Buffer *buffer, const void *data, size_t len) |
| { |
| memcpy(buffer->buffer + buffer->offset, data, len); |
| buffer->offset += len; |
| } |
| |
| static void vnc_desktop_resize(VncState *vs) |
| { |
| DisplayState *ds = vs->ds; |
| |
| if (vs->csock == -1 || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
| return; |
| } |
| if (vs->client_width == ds_get_width(ds) && |
| vs->client_height == ds_get_height(ds)) { |
| return; |
| } |
| vs->client_width = ds_get_width(ds); |
| vs->client_height = ds_get_height(ds); |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); /* number of rects */ |
| vnc_framebuffer_update(vs, 0, 0, vs->client_width, vs->client_height, |
| VNC_ENCODING_DESKTOPRESIZE); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| |
| static void vnc_abort_display_jobs(VncDisplay *vd) |
| { |
| VncState *vs; |
| |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| vnc_lock_output(vs); |
| vs->abort = true; |
| vnc_unlock_output(vs); |
| } |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| vnc_jobs_join(vs); |
| } |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| vnc_lock_output(vs); |
| vs->abort = false; |
| vnc_unlock_output(vs); |
| } |
| } |
| |
| static void vnc_dpy_resize(DisplayState *ds) |
| { |
| VncDisplay *vd = ds->opaque; |
| VncState *vs; |
| |
| vnc_abort_display_jobs(vd); |
| |
| /* server surface */ |
| if (!vd->server) |
| vd->server = g_malloc0(sizeof(*vd->server)); |
| if (vd->server->data) |
| g_free(vd->server->data); |
| *(vd->server) = *(ds->surface); |
| vd->server->data = g_malloc0(vd->server->linesize * |
| vd->server->height); |
| |
| /* guest surface */ |
| if (!vd->guest.ds) |
| vd->guest.ds = g_malloc0(sizeof(*vd->guest.ds)); |
| if (ds_get_bytes_per_pixel(ds) != vd->guest.ds->pf.bytes_per_pixel) |
| console_color_init(ds); |
| *(vd->guest.ds) = *(ds->surface); |
| memset(vd->guest.dirty, 0xFF, sizeof(vd->guest.dirty)); |
| |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| vnc_colordepth(vs); |
| vnc_desktop_resize(vs); |
| if (vs->vd->cursor) { |
| vnc_cursor_define(vs); |
| } |
| memset(vs->dirty, 0xFF, sizeof(vs->dirty)); |
| } |
| } |
| |
| /* fastest code */ |
| static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf, |
| void *pixels, int size) |
| { |
| vnc_write(vs, pixels, size); |
| } |
| |
| /* slowest but generic code. */ |
| void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) |
| { |
| uint8_t r, g, b; |
| VncDisplay *vd = vs->vd; |
| |
| r = ((((v & vd->server->pf.rmask) >> vd->server->pf.rshift) << vs->clientds.pf.rbits) >> |
| vd->server->pf.rbits); |
| g = ((((v & vd->server->pf.gmask) >> vd->server->pf.gshift) << vs->clientds.pf.gbits) >> |
| vd->server->pf.gbits); |
| b = ((((v & vd->server->pf.bmask) >> vd->server->pf.bshift) << vs->clientds.pf.bbits) >> |
| vd->server->pf.bbits); |
| v = (r << vs->clientds.pf.rshift) | |
| (g << vs->clientds.pf.gshift) | |
| (b << vs->clientds.pf.bshift); |
| switch(vs->clientds.pf.bytes_per_pixel) { |
| case 1: |
| buf[0] = v; |
| break; |
| case 2: |
| if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) { |
| buf[0] = v >> 8; |
| buf[1] = v; |
| } else { |
| buf[1] = v >> 8; |
| buf[0] = v; |
| } |
| break; |
| default: |
| case 4: |
| if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) { |
| buf[0] = v >> 24; |
| buf[1] = v >> 16; |
| buf[2] = v >> 8; |
| buf[3] = v; |
| } else { |
| buf[3] = v >> 24; |
| buf[2] = v >> 16; |
| buf[1] = v >> 8; |
| buf[0] = v; |
| } |
| break; |
| } |
| } |
| |
| static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf, |
| void *pixels1, int size) |
| { |
| uint8_t buf[4]; |
| |
| if (pf->bytes_per_pixel == 4) { |
| uint32_t *pixels = pixels1; |
| int n, i; |
| n = size >> 2; |
| for(i = 0; i < n; i++) { |
| vnc_convert_pixel(vs, buf, pixels[i]); |
| vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| } |
| } else if (pf->bytes_per_pixel == 2) { |
| uint16_t *pixels = pixels1; |
| int n, i; |
| n = size >> 1; |
| for(i = 0; i < n; i++) { |
| vnc_convert_pixel(vs, buf, pixels[i]); |
| vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| } |
| } else if (pf->bytes_per_pixel == 1) { |
| uint8_t *pixels = pixels1; |
| int n, i; |
| n = size; |
| for(i = 0; i < n; i++) { |
| vnc_convert_pixel(vs, buf, pixels[i]); |
| vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
| } |
| } else { |
| fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n"); |
| } |
| } |
| |
| int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
| { |
| int i; |
| uint8_t *row; |
| VncDisplay *vd = vs->vd; |
| |
| row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
| for (i = 0; i < h; i++) { |
| vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds)); |
| row += ds_get_linesize(vs->ds); |
| } |
| return 1; |
| } |
| |
| int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
| { |
| int n = 0; |
| |
| switch(vs->vnc_encoding) { |
| case VNC_ENCODING_ZLIB: |
| n = vnc_zlib_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| case VNC_ENCODING_HEXTILE: |
| vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
| n = vnc_hextile_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| case VNC_ENCODING_TIGHT: |
| n = vnc_tight_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| case VNC_ENCODING_TIGHT_PNG: |
| n = vnc_tight_png_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| case VNC_ENCODING_ZRLE: |
| n = vnc_zrle_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| case VNC_ENCODING_ZYWRLE: |
| n = vnc_zywrle_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| default: |
| vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
| n = vnc_raw_send_framebuffer_update(vs, x, y, w, h); |
| break; |
| } |
| return n; |
| } |
| |
| static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
| { |
| /* send bitblit op to the vnc client */ |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); /* number of rects */ |
| vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
| vnc_write_u16(vs, src_x); |
| vnc_write_u16(vs, src_y); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| |
| static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
| { |
| VncDisplay *vd = ds->opaque; |
| VncState *vs, *vn; |
| uint8_t *src_row; |
| uint8_t *dst_row; |
| int i,x,y,pitch,depth,inc,w_lim,s; |
| int cmp_bytes; |
| |
| vnc_refresh_server_surface(vd); |
| QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
| if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) { |
| vs->force_update = 1; |
| vnc_update_client_sync(vs, 1); |
| /* vs might be free()ed here */ |
| } |
| } |
| |
| /* do bitblit op on the local surface too */ |
| pitch = ds_get_linesize(vd->ds); |
| depth = ds_get_bytes_per_pixel(vd->ds); |
| src_row = vd->server->data + pitch * src_y + depth * src_x; |
| dst_row = vd->server->data + pitch * dst_y + depth * dst_x; |
| y = dst_y; |
| inc = 1; |
| if (dst_y > src_y) { |
| /* copy backwards */ |
| src_row += pitch * (h-1); |
| dst_row += pitch * (h-1); |
| pitch = -pitch; |
| y = dst_y + h - 1; |
| inc = -1; |
| } |
| w_lim = w - (16 - (dst_x % 16)); |
| if (w_lim < 0) |
| w_lim = w; |
| else |
| w_lim = w - (w_lim % 16); |
| for (i = 0; i < h; i++) { |
| for (x = 0; x <= w_lim; |
| x += s, src_row += cmp_bytes, dst_row += cmp_bytes) { |
| if (x == w_lim) { |
| if ((s = w - w_lim) == 0) |
| break; |
| } else if (!x) { |
| s = (16 - (dst_x % 16)); |
| s = MIN(s, w_lim); |
| } else { |
| s = 16; |
| } |
| cmp_bytes = s * depth; |
| if (memcmp(src_row, dst_row, cmp_bytes) == 0) |
| continue; |
| memmove(dst_row, src_row, cmp_bytes); |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) { |
| set_bit(((x + dst_x) / 16), vs->dirty[y]); |
| } |
| } |
| } |
| src_row += pitch - w * depth; |
| dst_row += pitch - w * depth; |
| y += inc; |
| } |
| |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) { |
| vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h); |
| } |
| } |
| } |
| |
| static void vnc_mouse_set(int x, int y, int visible) |
| { |
| /* can we ask the client(s) to move the pointer ??? */ |
| } |
| |
| static int vnc_cursor_define(VncState *vs) |
| { |
| QEMUCursor *c = vs->vd->cursor; |
| PixelFormat pf = qemu_default_pixelformat(32); |
| int isize; |
| |
| if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) { |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); /* padding */ |
| vnc_write_u16(vs, 1); /* # of rects */ |
| vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height, |
| VNC_ENCODING_RICH_CURSOR); |
| isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel; |
| vnc_write_pixels_generic(vs, &pf, c->data, isize); |
| vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize); |
| vnc_unlock_output(vs); |
| return 0; |
| } |
| return -1; |
| } |
| |
| static void vnc_dpy_cursor_define(QEMUCursor *c) |
| { |
| VncDisplay *vd = vnc_display; |
| VncState *vs; |
| |
| cursor_put(vd->cursor); |
| g_free(vd->cursor_mask); |
| |
| vd->cursor = c; |
| cursor_get(vd->cursor); |
| vd->cursor_msize = cursor_get_mono_bpl(c) * c->height; |
| vd->cursor_mask = g_malloc0(vd->cursor_msize); |
| cursor_get_mono_mask(c, 0, vd->cursor_mask); |
| |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| vnc_cursor_define(vs); |
| } |
| } |
| |
| static int find_and_clear_dirty_height(struct VncState *vs, |
| int y, int last_x, int x, int height) |
| { |
| int h; |
| |
| for (h = 1; h < (height - y); h++) { |
| int tmp_x; |
| if (!test_bit(last_x, vs->dirty[y + h])) { |
| break; |
| } |
| for (tmp_x = last_x; tmp_x < x; tmp_x++) { |
| clear_bit(tmp_x, vs->dirty[y + h]); |
| } |
| } |
| |
| return h; |
| } |
| |
| static int vnc_update_client_sync(VncState *vs, int has_dirty) |
| { |
| int ret = vnc_update_client(vs, has_dirty); |
| vnc_jobs_join(vs); |
| return ret; |
| } |
| |
| static int vnc_update_client(VncState *vs, int has_dirty) |
| { |
| if (vs->need_update && vs->csock != -1) { |
| VncDisplay *vd = vs->vd; |
| VncJob *job; |
| int y; |
| int width, height; |
| int n = 0; |
| |
| |
| if (vs->output.offset && !vs->audio_cap && !vs->force_update) |
| /* kernel send buffers are full -> drop frames to throttle */ |
| return 0; |
| |
| if (!has_dirty && !vs->audio_cap && !vs->force_update) |
| return 0; |
| |
| /* |
| * Send screen updates to the vnc client using the server |
| * surface and server dirty map. guest surface updates |
| * happening in parallel don't disturb us, the next pass will |
| * send them to the client. |
| */ |
| job = vnc_job_new(vs); |
| |
| width = MIN(vd->server->width, vs->client_width); |
| height = MIN(vd->server->height, vs->client_height); |
| |
| for (y = 0; y < height; y++) { |
| int x; |
| int last_x = -1; |
| for (x = 0; x < width / 16; x++) { |
| if (test_and_clear_bit(x, vs->dirty[y])) { |
| if (last_x == -1) { |
| last_x = x; |
| } |
| } else { |
| if (last_x != -1) { |
| int h = find_and_clear_dirty_height(vs, y, last_x, x, |
| height); |
| |
| n += vnc_job_add_rect(job, last_x * 16, y, |
| (x - last_x) * 16, h); |
| } |
| last_x = -1; |
| } |
| } |
| if (last_x != -1) { |
| int h = find_and_clear_dirty_height(vs, y, last_x, x, height); |
| n += vnc_job_add_rect(job, last_x * 16, y, |
| (x - last_x) * 16, h); |
| } |
| } |
| |
| vnc_job_push(job); |
| vs->force_update = 0; |
| return n; |
| } |
| |
| if (vs->csock == -1) |
| vnc_disconnect_finish(vs); |
| |
| return 0; |
| } |
| |
| /* audio */ |
| static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
| { |
| VncState *vs = opaque; |
| |
| switch (cmd) { |
| case AUD_CNOTIFY_DISABLE: |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
| vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| break; |
| |
| case AUD_CNOTIFY_ENABLE: |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
| vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| break; |
| } |
| } |
| |
| static void audio_capture_destroy(void *opaque) |
| { |
| } |
| |
| static void audio_capture(void *opaque, void *buf, int size) |
| { |
| VncState *vs = opaque; |
| |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU); |
| vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO); |
| vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA); |
| vnc_write_u32(vs, size); |
| vnc_write(vs, buf, size); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| |
| static void audio_add(VncState *vs) |
| { |
| struct audio_capture_ops ops; |
| |
| if (vs->audio_cap) { |
| monitor_printf(default_mon, "audio already running\n"); |
| return; |
| } |
| |
| ops.notify = audio_capture_notify; |
| ops.destroy = audio_capture_destroy; |
| ops.capture = audio_capture; |
| |
| vs->audio_cap = AUD_add_capture(&vs->as, &ops, vs); |
| if (!vs->audio_cap) { |
| monitor_printf(default_mon, "Failed to add audio capture\n"); |
| } |
| } |
| |
| static void audio_del(VncState *vs) |
| { |
| if (vs->audio_cap) { |
| AUD_del_capture(vs->audio_cap, vs); |
| vs->audio_cap = NULL; |
| } |
| } |
| |
| static void vnc_disconnect_start(VncState *vs) |
| { |
| if (vs->csock == -1) |
| return; |
| vnc_set_share_mode(vs, VNC_SHARE_MODE_DISCONNECTED); |
| qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
| closesocket(vs->csock); |
| vs->csock = -1; |
| } |
| |
| static void vnc_disconnect_finish(VncState *vs) |
| { |
| int i; |
| |
| vnc_jobs_join(vs); /* Wait encoding jobs */ |
| |
| vnc_lock_output(vs); |
| vnc_qmp_event(vs, QEVENT_VNC_DISCONNECTED); |
| |
| buffer_free(&vs->input); |
| buffer_free(&vs->output); |
| |
| qobject_decref(vs->info); |
| |
| vnc_zlib_clear(vs); |
| vnc_tight_clear(vs); |
| vnc_zrle_clear(vs); |
| |
| #ifdef CONFIG_VNC_TLS |
| vnc_tls_client_cleanup(vs); |
| #endif /* CONFIG_VNC_TLS */ |
| #ifdef CONFIG_VNC_SASL |
| vnc_sasl_client_cleanup(vs); |
| #endif /* CONFIG_VNC_SASL */ |
| audio_del(vs); |
| vnc_release_modifiers(vs); |
| |
| QTAILQ_REMOVE(&vs->vd->clients, vs, next); |
| |
| if (QTAILQ_EMPTY(&vs->vd->clients)) { |
| dcl->idle = 1; |
| } |
| |
| qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
| vnc_remove_timer(vs->vd); |
| if (vs->vd->lock_key_sync) |
| qemu_remove_led_event_handler(vs->led); |
| vnc_unlock_output(vs); |
| |
| qemu_mutex_destroy(&vs->output_mutex); |
| qemu_bh_delete(vs->bh); |
| buffer_free(&vs->jobs_buffer); |
| |
| for (i = 0; i < VNC_STAT_ROWS; ++i) { |
| g_free(vs->lossy_rect[i]); |
| } |
| g_free(vs->lossy_rect); |
| g_free(vs); |
| } |
| |
| int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
| { |
| if (ret == 0 || ret == -1) { |
| if (ret == -1) { |
| switch (last_errno) { |
| case EINTR: |
| case EAGAIN: |
| #ifdef _WIN32 |
| case WSAEWOULDBLOCK: |
| #endif |
| return 0; |
| default: |
| break; |
| } |
| } |
| |
| VNC_DEBUG("Closing down client sock: ret %d, errno %d\n", |
| ret, ret < 0 ? last_errno : 0); |
| vnc_disconnect_start(vs); |
| |
| return 0; |
| } |
| return ret; |
| } |
| |
| |
| void vnc_client_error(VncState *vs) |
| { |
| VNC_DEBUG("Closing down client sock: protocol error\n"); |
| vnc_disconnect_start(vs); |
| } |
| |
| |
| /* |
| * Called to write a chunk of data to the client socket. The data may |
| * be the raw data, or may have already been encoded by SASL. |
| * The data will be written either straight onto the socket, or |
| * written via the GNUTLS wrappers, if TLS/SSL encryption is enabled |
| * |
| * NB, it is theoretically possible to have 2 layers of encryption, |
| * both SASL, and this TLS layer. It is highly unlikely in practice |
| * though, since SASL encryption will typically be a no-op if TLS |
| * is active |
| * |
| * Returns the number of bytes written, which may be less than |
| * the requested 'datalen' if the socket would block. Returns |
| * -1 on error, and disconnects the client socket. |
| */ |
| long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen) |
| { |
| long ret; |
| #ifdef CONFIG_VNC_TLS |
| if (vs->tls.session) { |
| ret = gnutls_write(vs->tls.session, data, datalen); |
| if (ret < 0) { |
| if (ret == GNUTLS_E_AGAIN) |
| errno = EAGAIN; |
| else |
| errno = EIO; |
| ret = -1; |
| } |
| } else |
| #endif /* CONFIG_VNC_TLS */ |
| ret = send(vs->csock, (const void *)data, datalen, 0); |
| VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret); |
| return vnc_client_io_error(vs, ret, socket_error()); |
| } |
| |
| |
| /* |
| * Called to write buffered data to the client socket, when not |
| * using any SASL SSF encryption layers. Will write as much data |
| * as possible without blocking. If all buffered data is written, |
| * will switch the FD poll() handler back to read monitoring. |
| * |
| * Returns the number of bytes written, which may be less than |
| * the buffered output data if the socket would block. Returns |
| * -1 on error, and disconnects the client socket. |
| */ |
| static long vnc_client_write_plain(VncState *vs) |
| { |
| long ret; |
| |
| #ifdef CONFIG_VNC_SASL |
| VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n", |
| vs->output.buffer, vs->output.capacity, vs->output.offset, |
| vs->sasl.waitWriteSSF); |
| |
| if (vs->sasl.conn && |
| vs->sasl.runSSF && |
| vs->sasl.waitWriteSSF) { |
| ret = vnc_client_write_buf(vs, vs->output.buffer, vs->sasl.waitWriteSSF); |
| if (ret) |
| vs->sasl.waitWriteSSF -= ret; |
| } else |
| #endif /* CONFIG_VNC_SASL */ |
| ret = vnc_client_write_buf(vs, vs->output.buffer, vs->output.offset); |
| if (!ret) |
| return 0; |
| |
| memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
| vs->output.offset -= ret; |
| |
| if (vs->output.offset == 0) { |
| qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
| } |
| |
| return ret; |
| } |
| |
| |
| /* |
| * First function called whenever there is data to be written to |
| * the client socket. Will delegate actual work according to whether |
| * SASL SSF layers are enabled (thus requiring encryption calls) |
| */ |
| static void vnc_client_write_locked(void *opaque) |
| { |
| VncState *vs = opaque; |
| |
| #ifdef CONFIG_VNC_SASL |
| if (vs->sasl.conn && |
| vs->sasl.runSSF && |
| !vs->sasl.waitWriteSSF) { |
| vnc_client_write_sasl(vs); |
| } else |
| #endif /* CONFIG_VNC_SASL */ |
| vnc_client_write_plain(vs); |
| } |
| |
| void vnc_client_write(void *opaque) |
| { |
| VncState *vs = opaque; |
| |
| vnc_lock_output(vs); |
| if (vs->output.offset) { |
| vnc_client_write_locked(opaque); |
| } else if (vs->csock != -1) { |
| qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
| } |
| vnc_unlock_output(vs); |
| } |
| |
| void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting) |
| { |
| vs->read_handler = func; |
| vs->read_handler_expect = expecting; |
| } |
| |
| |
| /* |
| * Called to read a chunk of data from the client socket. The data may |
| * be the raw data, or may need to be further decoded by SASL. |
| * The data will be read either straight from to the socket, or |
| * read via the GNUTLS wrappers, if TLS/SSL encryption is enabled |
| * |
| * NB, it is theoretically possible to have 2 layers of encryption, |
| * both SASL, and this TLS layer. It is highly unlikely in practice |
| * though, since SASL encryption will typically be a no-op if TLS |
| * is active |
| * |
| * Returns the number of bytes read, which may be less than |
| * the requested 'datalen' if the socket would block. Returns |
| * -1 on error, and disconnects the client socket. |
| */ |
| long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen) |
| { |
| long ret; |
| #ifdef CONFIG_VNC_TLS |
| if (vs->tls.session) { |
| ret = gnutls_read(vs->tls.session, data, datalen); |
| if (ret < 0) { |
| if (ret == GNUTLS_E_AGAIN) |
| errno = EAGAIN; |
| else |
| errno = EIO; |
| ret = -1; |
| } |
| } else |
| #endif /* CONFIG_VNC_TLS */ |
| ret = qemu_recv(vs->csock, data, datalen, 0); |
| VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret); |
| return vnc_client_io_error(vs, ret, socket_error()); |
| } |
| |
| |
| /* |
| * Called to read data from the client socket to the input buffer, |
| * when not using any SASL SSF encryption layers. Will read as much |
| * data as possible without blocking. |
| * |
| * Returns the number of bytes read. Returns -1 on error, and |
| * disconnects the client socket. |
| */ |
| static long vnc_client_read_plain(VncState *vs) |
| { |
| int ret; |
| VNC_DEBUG("Read plain %p size %zd offset %zd\n", |
| vs->input.buffer, vs->input.capacity, vs->input.offset); |
| buffer_reserve(&vs->input, 4096); |
| ret = vnc_client_read_buf(vs, buffer_end(&vs->input), 4096); |
| if (!ret) |
| return 0; |
| vs->input.offset += ret; |
| return ret; |
| } |
| |
| static void vnc_jobs_bh(void *opaque) |
| { |
| VncState *vs = opaque; |
| |
| vnc_jobs_consume_buffer(vs); |
| } |
| |
| /* |
| * First function called whenever there is more data to be read from |
| * the client socket. Will delegate actual work according to whether |
| * SASL SSF layers are enabled (thus requiring decryption calls) |
| */ |
| void vnc_client_read(void *opaque) |
| { |
| VncState *vs = opaque; |
| long ret; |
| |
| #ifdef CONFIG_VNC_SASL |
| if (vs->sasl.conn && vs->sasl.runSSF) |
| ret = vnc_client_read_sasl(vs); |
| else |
| #endif /* CONFIG_VNC_SASL */ |
| ret = vnc_client_read_plain(vs); |
| if (!ret) { |
| if (vs->csock == -1) |
| vnc_disconnect_finish(vs); |
| return; |
| } |
| |
| while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) { |
| size_t len = vs->read_handler_expect; |
| int ret; |
| |
| ret = vs->read_handler(vs, vs->input.buffer, len); |
| if (vs->csock == -1) { |
| vnc_disconnect_finish(vs); |
| return; |
| } |
| |
| if (!ret) { |
| memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
| vs->input.offset -= len; |
| } else { |
| vs->read_handler_expect = ret; |
| } |
| } |
| } |
| |
| void vnc_write(VncState *vs, const void *data, size_t len) |
| { |
| buffer_reserve(&vs->output, len); |
| |
| if (vs->csock != -1 && buffer_empty(&vs->output)) { |
| qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs); |
| } |
| |
| buffer_append(&vs->output, data, len); |
| } |
| |
| void vnc_write_s32(VncState *vs, int32_t value) |
| { |
| vnc_write_u32(vs, *(uint32_t *)&value); |
| } |
| |
| void vnc_write_u32(VncState *vs, uint32_t value) |
| { |
| uint8_t buf[4]; |
| |
| buf[0] = (value >> 24) & 0xFF; |
| buf[1] = (value >> 16) & 0xFF; |
| buf[2] = (value >> 8) & 0xFF; |
| buf[3] = value & 0xFF; |
| |
| vnc_write(vs, buf, 4); |
| } |
| |
| void vnc_write_u16(VncState *vs, uint16_t value) |
| { |
| uint8_t buf[2]; |
| |
| buf[0] = (value >> 8) & 0xFF; |
| buf[1] = value & 0xFF; |
| |
| vnc_write(vs, buf, 2); |
| } |
| |
| void vnc_write_u8(VncState *vs, uint8_t value) |
| { |
| vnc_write(vs, (char *)&value, 1); |
| } |
| |
| void vnc_flush(VncState *vs) |
| { |
| vnc_lock_output(vs); |
| if (vs->csock != -1 && vs->output.offset) { |
| vnc_client_write_locked(vs); |
| } |
| vnc_unlock_output(vs); |
| } |
| |
| uint8_t read_u8(uint8_t *data, size_t offset) |
| { |
| return data[offset]; |
| } |
| |
| uint16_t read_u16(uint8_t *data, size_t offset) |
| { |
| return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
| } |
| |
| int32_t read_s32(uint8_t *data, size_t offset) |
| { |
| return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
| (data[offset + 2] << 8) | data[offset + 3]); |
| } |
| |
| uint32_t read_u32(uint8_t *data, size_t offset) |
| { |
| return ((data[offset] << 24) | (data[offset + 1] << 16) | |
| (data[offset + 2] << 8) | data[offset + 3]); |
| } |
| |
| static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
| { |
| } |
| |
| static void check_pointer_type_change(Notifier *notifier, void *data) |
| { |
| VncState *vs = container_of(notifier, VncState, mouse_mode_notifier); |
| int absolute = kbd_mouse_is_absolute(); |
| |
| if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) { |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); |
| vnc_framebuffer_update(vs, absolute, 0, |
| ds_get_width(vs->ds), ds_get_height(vs->ds), |
| VNC_ENCODING_POINTER_TYPE_CHANGE); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| vs->absolute = absolute; |
| } |
| |
| static void pointer_event(VncState *vs, int button_mask, int x, int y) |
| { |
| int buttons = 0; |
| int dz = 0; |
| |
| if (button_mask & 0x01) |
| buttons |= MOUSE_EVENT_LBUTTON; |
| if (button_mask & 0x02) |
| buttons |= MOUSE_EVENT_MBUTTON; |
| if (button_mask & 0x04) |
| buttons |= MOUSE_EVENT_RBUTTON; |
| if (button_mask & 0x08) |
| dz = -1; |
| if (button_mask & 0x10) |
| dz = 1; |
| |
| if (vs->absolute) { |
| kbd_mouse_event(ds_get_width(vs->ds) > 1 ? |
| x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000, |
| ds_get_height(vs->ds) > 1 ? |
| y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000, |
| dz, buttons); |
| } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
| x -= 0x7FFF; |
| y -= 0x7FFF; |
| |
| kbd_mouse_event(x, y, dz, buttons); |
| } else { |
| if (vs->last_x != -1) |
| kbd_mouse_event(x - vs->last_x, |
| y - vs->last_y, |
| dz, buttons); |
| vs->last_x = x; |
| vs->last_y = y; |
| } |
| } |
| |
| static void reset_keys(VncState *vs) |
| { |
| int i; |
| for(i = 0; i < 256; i++) { |
| if (vs->modifiers_state[i]) { |
| if (i & SCANCODE_GREY) |
| kbd_put_keycode(SCANCODE_EMUL0); |
| kbd_put_keycode(i | SCANCODE_UP); |
| vs->modifiers_state[i] = 0; |
| } |
| } |
| } |
| |
| static void press_key(VncState *vs, int keysym) |
| { |
| int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK; |
| if (keycode & SCANCODE_GREY) |
| kbd_put_keycode(SCANCODE_EMUL0); |
| kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
| if (keycode & SCANCODE_GREY) |
| kbd_put_keycode(SCANCODE_EMUL0); |
| kbd_put_keycode(keycode | SCANCODE_UP); |
| } |
| |
| static void kbd_leds(void *opaque, int ledstate) |
| { |
| VncState *vs = opaque; |
| int caps, num; |
| |
| caps = ledstate & QEMU_CAPS_LOCK_LED ? 1 : 0; |
| num = ledstate & QEMU_NUM_LOCK_LED ? 1 : 0; |
| |
| if (vs->modifiers_state[0x3a] != caps) { |
| vs->modifiers_state[0x3a] = caps; |
| } |
| if (vs->modifiers_state[0x45] != num) { |
| vs->modifiers_state[0x45] = num; |
| } |
| } |
| |
| static void do_key_event(VncState *vs, int down, int keycode, int sym) |
| { |
| /* QEMU console switch */ |
| switch(keycode) { |
| case 0x2a: /* Left Shift */ |
| case 0x36: /* Right Shift */ |
| case 0x1d: /* Left CTRL */ |
| case 0x9d: /* Right CTRL */ |
| case 0x38: /* Left ALT */ |
| case 0xb8: /* Right ALT */ |
| if (down) |
| vs->modifiers_state[keycode] = 1; |
| else |
| vs->modifiers_state[keycode] = 0; |
| break; |
| case 0x02 ... 0x0a: /* '1' to '9' keys */ |
| if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
| /* Reset the modifiers sent to the current console */ |
| reset_keys(vs); |
| console_select(keycode - 0x02); |
| return; |
| } |
| break; |
| case 0x3a: /* CapsLock */ |
| case 0x45: /* NumLock */ |
| if (down) |
| vs->modifiers_state[keycode] ^= 1; |
| break; |
| } |
| |
| if (down && vs->vd->lock_key_sync && |
| keycode_is_keypad(vs->vd->kbd_layout, keycode)) { |
| /* If the numlock state needs to change then simulate an additional |
| keypress before sending this one. This will happen if the user |
| toggles numlock away from the VNC window. |
| */ |
| if (keysym_is_numlock(vs->vd->kbd_layout, sym & 0xFFFF)) { |
| if (!vs->modifiers_state[0x45]) { |
| vs->modifiers_state[0x45] = 1; |
| press_key(vs, 0xff7f); |
| } |
| } else { |
| if (vs->modifiers_state[0x45]) { |
| vs->modifiers_state[0x45] = 0; |
| press_key(vs, 0xff7f); |
| } |
| } |
| } |
| |
| if (down && vs->vd->lock_key_sync && |
| ((sym >= 'A' && sym <= 'Z') || (sym >= 'a' && sym <= 'z'))) { |
| /* If the capslock state needs to change then simulate an additional |
| keypress before sending this one. This will happen if the user |
| toggles capslock away from the VNC window. |
| */ |
| int uppercase = !!(sym >= 'A' && sym <= 'Z'); |
| int shift = !!(vs->modifiers_state[0x2a] | vs->modifiers_state[0x36]); |
| int capslock = !!(vs->modifiers_state[0x3a]); |
| if (capslock) { |
| if (uppercase == shift) { |
| vs->modifiers_state[0x3a] = 0; |
| press_key(vs, 0xffe5); |
| } |
| } else { |
| if (uppercase != shift) { |
| vs->modifiers_state[0x3a] = 1; |
| press_key(vs, 0xffe5); |
| } |
| } |
| } |
| |
| if (is_graphic_console()) { |
| if (keycode & SCANCODE_GREY) |
| kbd_put_keycode(SCANCODE_EMUL0); |
| if (down) |
| kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK); |
| else |
| kbd_put_keycode(keycode | SCANCODE_UP); |
| } else { |
| bool numlock = vs->modifiers_state[0x45]; |
| bool control = (vs->modifiers_state[0x1d] || |
| vs->modifiers_state[0x9d]); |
| /* QEMU console emulation */ |
| if (down) { |
| switch (keycode) { |
| case 0x2a: /* Left Shift */ |
| case 0x36: /* Right Shift */ |
| case 0x1d: /* Left CTRL */ |
| case 0x9d: /* Right CTRL */ |
| case 0x38: /* Left ALT */ |
| case 0xb8: /* Right ALT */ |
| break; |
| case 0xc8: |
| kbd_put_keysym(QEMU_KEY_UP); |
| break; |
| case 0xd0: |
| kbd_put_keysym(QEMU_KEY_DOWN); |
| break; |
| case 0xcb: |
| kbd_put_keysym(QEMU_KEY_LEFT); |
| break; |
| case 0xcd: |
| kbd_put_keysym(QEMU_KEY_RIGHT); |
| break; |
| case 0xd3: |
| kbd_put_keysym(QEMU_KEY_DELETE); |
| break; |
| case 0xc7: |
| kbd_put_keysym(QEMU_KEY_HOME); |
| break; |
| case 0xcf: |
| kbd_put_keysym(QEMU_KEY_END); |
| break; |
| case 0xc9: |
| kbd_put_keysym(QEMU_KEY_PAGEUP); |
| break; |
| case 0xd1: |
| kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
| break; |
| |
| case 0x47: |
| kbd_put_keysym(numlock ? '7' : QEMU_KEY_HOME); |
| break; |
| case 0x48: |
| kbd_put_keysym(numlock ? '8' : QEMU_KEY_UP); |
| break; |
| case 0x49: |
| kbd_put_keysym(numlock ? '9' : QEMU_KEY_PAGEUP); |
| break; |
| case 0x4b: |
| kbd_put_keysym(numlock ? '4' : QEMU_KEY_LEFT); |
| break; |
| case 0x4c: |
| kbd_put_keysym('5'); |
| break; |
| case 0x4d: |
| kbd_put_keysym(numlock ? '6' : QEMU_KEY_RIGHT); |
| break; |
| case 0x4f: |
| kbd_put_keysym(numlock ? '1' : QEMU_KEY_END); |
| break; |
| case 0x50: |
| kbd_put_keysym(numlock ? '2' : QEMU_KEY_DOWN); |
| break; |
| case 0x51: |
| kbd_put_keysym(numlock ? '3' : QEMU_KEY_PAGEDOWN); |
| break; |
| case 0x52: |
| kbd_put_keysym('0'); |
| break; |
| case 0x53: |
| kbd_put_keysym(numlock ? '.' : QEMU_KEY_DELETE); |
| break; |
| |
| case 0xb5: |
| kbd_put_keysym('/'); |
| break; |
| case 0x37: |
| kbd_put_keysym('*'); |
| break; |
| case 0x4a: |
| kbd_put_keysym('-'); |
| break; |
| case 0x4e: |
| kbd_put_keysym('+'); |
| break; |
| case 0x9c: |
| kbd_put_keysym('\n'); |
| break; |
| |
| default: |
| if (control) { |
| kbd_put_keysym(sym & 0x1f); |
| } else { |
| kbd_put_keysym(sym); |
| } |
| break; |
| } |
| } |
| } |
| } |
| |
| static void vnc_release_modifiers(VncState *vs) |
| { |
| static const int keycodes[] = { |
| /* shift, control, alt keys, both left & right */ |
| 0x2a, 0x36, 0x1d, 0x9d, 0x38, 0xb8, |
| }; |
| int i, keycode; |
| |
| if (!is_graphic_console()) { |
| return; |
| } |
| for (i = 0; i < ARRAY_SIZE(keycodes); i++) { |
| keycode = keycodes[i]; |
| if (!vs->modifiers_state[keycode]) { |
| continue; |
| } |
| if (keycode & SCANCODE_GREY) { |
| kbd_put_keycode(SCANCODE_EMUL0); |
| } |
| kbd_put_keycode(keycode | SCANCODE_UP); |
| } |
| } |
| |
| static void key_event(VncState *vs, int down, uint32_t sym) |
| { |
| int keycode; |
| int lsym = sym; |
| |
| if (lsym >= 'A' && lsym <= 'Z' && is_graphic_console()) { |
| lsym = lsym - 'A' + 'a'; |
| } |
| |
| keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK; |
| do_key_event(vs, down, keycode, sym); |
| } |
| |
| static void ext_key_event(VncState *vs, int down, |
| uint32_t sym, uint16_t keycode) |
| { |
| /* if the user specifies a keyboard layout, always use it */ |
| if (keyboard_layout) |
| key_event(vs, down, sym); |
| else |
| do_key_event(vs, down, keycode, sym); |
| } |
| |
| static void framebuffer_update_request(VncState *vs, int incremental, |
| int x_position, int y_position, |
| int w, int h) |
| { |
| int i; |
| const size_t width = ds_get_width(vs->ds) / 16; |
| |
| if (y_position > ds_get_height(vs->ds)) |
| y_position = ds_get_height(vs->ds); |
| if (y_position + h >= ds_get_height(vs->ds)) |
| h = ds_get_height(vs->ds) - y_position; |
| |
| vs->need_update = 1; |
| if (!incremental) { |
| vs->force_update = 1; |
| for (i = 0; i < h; i++) { |
| bitmap_set(vs->dirty[y_position + i], 0, width); |
| bitmap_clear(vs->dirty[y_position + i], width, |
| VNC_DIRTY_BITS - width); |
| } |
| } |
| } |
| |
| static void send_ext_key_event_ack(VncState *vs) |
| { |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); |
| vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
| VNC_ENCODING_EXT_KEY_EVENT); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| |
| static void send_ext_audio_ack(VncState *vs) |
| { |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); |
| vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
| VNC_ENCODING_AUDIO); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } |
| |
| static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
| { |
| int i; |
| unsigned int enc = 0; |
| |
| vs->features = 0; |
| vs->vnc_encoding = 0; |
| vs->tight.compression = 9; |
| vs->tight.quality = -1; /* Lossless by default */ |
| vs->absolute = -1; |
| |
| /* |
| * Start from the end because the encodings are sent in order of preference. |
| * This way the preferred encoding (first encoding defined in the array) |
| * will be set at the end of the loop. |
| */ |
| for (i = n_encodings - 1; i >= 0; i--) { |
| enc = encodings[i]; |
| switch (enc) { |
| case VNC_ENCODING_RAW: |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_COPYRECT: |
| vs->features |= VNC_FEATURE_COPYRECT_MASK; |
| break; |
| case VNC_ENCODING_HEXTILE: |
| vs->features |= VNC_FEATURE_HEXTILE_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_TIGHT: |
| vs->features |= VNC_FEATURE_TIGHT_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_TIGHT_PNG: |
| vs->features |= VNC_FEATURE_TIGHT_PNG_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_ZLIB: |
| vs->features |= VNC_FEATURE_ZLIB_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_ZRLE: |
| vs->features |= VNC_FEATURE_ZRLE_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_ZYWRLE: |
| vs->features |= VNC_FEATURE_ZYWRLE_MASK; |
| vs->vnc_encoding = enc; |
| break; |
| case VNC_ENCODING_DESKTOPRESIZE: |
| vs->features |= VNC_FEATURE_RESIZE_MASK; |
| break; |
| case VNC_ENCODING_POINTER_TYPE_CHANGE: |
| vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
| break; |
| case VNC_ENCODING_RICH_CURSOR: |
| vs->features |= VNC_FEATURE_RICH_CURSOR_MASK; |
| break; |
| case VNC_ENCODING_EXT_KEY_EVENT: |
| send_ext_key_event_ack(vs); |
| break; |
| case VNC_ENCODING_AUDIO: |
| send_ext_audio_ack(vs); |
| break; |
| case VNC_ENCODING_WMVi: |
| vs->features |= VNC_FEATURE_WMVI_MASK; |
| break; |
| case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
| vs->tight.compression = (enc & 0x0F); |
| break; |
| case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
| if (vs->vd->lossy) { |
| vs->tight.quality = (enc & 0x0F); |
| } |
| break; |
| default: |
| VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc); |
| break; |
| } |
| } |
| vnc_desktop_resize(vs); |
| check_pointer_type_change(&vs->mouse_mode_notifier, NULL); |
| } |
| |
| static void set_pixel_conversion(VncState *vs) |
| { |
| if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) == |
| (vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
| !memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) { |
| vs->write_pixels = vnc_write_pixels_copy; |
| vnc_hextile_set_pixel_conversion(vs, 0); |
| } else { |
| vs->write_pixels = vnc_write_pixels_generic; |
| vnc_hextile_set_pixel_conversion(vs, 1); |
| } |
| } |
| |
| static void set_pixel_format(VncState *vs, |
| int bits_per_pixel, int depth, |
| int big_endian_flag, int true_color_flag, |
| int red_max, int green_max, int blue_max, |
| int red_shift, int green_shift, int blue_shift) |
| { |
| if (!true_color_flag) { |
| vnc_client_error(vs); |
| return; |
| } |
| |
| vs->clientds = *(vs->vd->guest.ds); |
| vs->clientds.pf.rmax = red_max; |
| vs->clientds.pf.rbits = hweight_long(red_max); |
| vs->clientds.pf.rshift = red_shift; |
| vs->clientds.pf.rmask = red_max << red_shift; |
| vs->clientds.pf.gmax = green_max; |
| vs->clientds.pf.gbits = hweight_long(green_max); |
| vs->clientds.pf.gshift = green_shift; |
| vs->clientds.pf.gmask = green_max << green_shift; |
| vs->clientds.pf.bmax = blue_max; |
| vs->clientds.pf.bbits = hweight_long(blue_max); |
| vs->clientds.pf.bshift = blue_shift; |
| vs->clientds.pf.bmask = blue_max << blue_shift; |
| vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
| vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8; |
| vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
| vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00; |
| |
| set_pixel_conversion(vs); |
| |
| vga_hw_invalidate(); |
| vga_hw_update(); |
| } |
| |
| static void pixel_format_message (VncState *vs) { |
| char pad[3] = { 0, 0, 0 }; |
| |
| vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */ |
| vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */ |
| |
| #ifdef HOST_WORDS_BIGENDIAN |
| vnc_write_u8(vs, 1); /* big-endian-flag */ |
| #else |
| vnc_write_u8(vs, 0); /* big-endian-flag */ |
| #endif |
| vnc_write_u8(vs, 1); /* true-color-flag */ |
| vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */ |
| vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */ |
| vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */ |
| vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */ |
| vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */ |
| vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */ |
| |
| vnc_hextile_set_pixel_conversion(vs, 0); |
| |
| vs->clientds = *(vs->ds->surface); |
| vs->clientds.flags &= ~QEMU_ALLOCATED_FLAG; |
| vs->write_pixels = vnc_write_pixels_copy; |
| |
| vnc_write(vs, pad, 3); /* padding */ |
| } |
| |
| static void vnc_dpy_setdata(DisplayState *ds) |
| { |
| VncDisplay *vd = ds->opaque; |
| |
| *(vd->guest.ds) = *(ds->surface); |
| vnc_dpy_update(ds, 0, 0, ds_get_width(ds), ds_get_height(ds)); |
| } |
| |
| static void vnc_colordepth(VncState *vs) |
| { |
| if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) { |
| /* Sending a WMVi message to notify the client*/ |
| vnc_lock_output(vs); |
| vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); |
| vnc_write_u8(vs, 0); |
| vnc_write_u16(vs, 1); /* number of rects */ |
| vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), |
| ds_get_height(vs->ds), VNC_ENCODING_WMVi); |
| pixel_format_message(vs); |
| vnc_unlock_output(vs); |
| vnc_flush(vs); |
| } else { |
| set_pixel_conversion(vs); |
| } |
| } |
| |
| static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
| { |
| int i; |
| uint16_t limit; |
| VncDisplay *vd = vs->vd; |
| |
| if (data[0] > 3) { |
| vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| if (!qemu_timer_expired(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval)) |
| qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval); |
| } |
| |
| switch (data[0]) { |
| case VNC_MSG_CLIENT_SET_PIXEL_FORMAT: |
| if (len == 1) |
| return 20; |
| |
| set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
| read_u8(data, 6), read_u8(data, 7), |
| read_u16(data, 8), read_u16(data, 10), |
| read_u16(data, 12), read_u8(data, 14), |
| read_u8(data, 15), read_u8(data, 16)); |
| break; |
| case VNC_MSG_CLIENT_SET_ENCODINGS: |
| if (len == 1) |
| return 4; |
| |
| if (len == 4) { |
| limit = read_u16(data, 2); |
| if (limit > 0) |
| return 4 + (limit * 4); |
| } else |
| limit = read_u16(data, 2); |
| |
| for (i = 0; i < limit; i++) { |
| int32_t val = read_s32(data, 4 + (i * 4)); |
| memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
| } |
| |
| set_encodings(vs, (int32_t *)(data + 4), limit); |
| break; |
| case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST: |
| if (len == 1) |
| return 10; |
| |
| framebuffer_update_request(vs, |
| read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
| read_u16(data, 6), read_u16(data, 8)); |
| break; |
| case VNC_MSG_CLIENT_KEY_EVENT: |
| if (len == 1) |
| return 8; |
| |
| key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
| break; |
| case VNC_MSG_CLIENT_POINTER_EVENT: |
| if (len == 1) |
| return 6; |
| |
| pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
| break; |
| case VNC_MSG_CLIENT_CUT_TEXT: |
| if (len == 1) |
| return 8; |
| |
| if (len == 8) { |
| uint32_t dlen = read_u32(data, 4); |
| if (dlen > 0) |
| return 8 + dlen; |
| } |
| |
| client_cut_text(vs, read_u32(data, 4), data + 8); |
| break; |
| case VNC_MSG_CLIENT_QEMU: |
| if (len == 1) |
| return 2; |
| |
| switch (read_u8(data, 1)) { |
| case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT: |
| if (len == 2) |
| return 12; |
| |
| ext_key_event(vs, read_u16(data, 2), |
| read_u32(data, 4), read_u32(data, 8)); |
| break; |
| case VNC_MSG_CLIENT_QEMU_AUDIO: |
| if (len == 2) |
| return 4; |
| |
| switch (read_u16 (data, 2)) { |
| case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE: |
| audio_add(vs); |
| break; |
| case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE: |
| audio_del(vs); |
| break; |
| case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT: |
| if (len == 4) |
| return 10; |
| switch (read_u8(data, 4)) { |
| case 0: vs->as.fmt = AUD_FMT_U8; break; |
| case 1: vs->as.fmt = AUD_FMT_S8; break; |
| case 2: vs->as.fmt = AUD_FMT_U16; break; |
| case 3: vs->as.fmt = AUD_FMT_S16; break; |
| case 4: vs->as.fmt = AUD_FMT_U32; break; |
| case 5: vs->as.fmt = AUD_FMT_S32; break; |
| default: |
| printf("Invalid audio format %d\n", read_u8(data, 4)); |
| vnc_client_error(vs); |
| break; |
| } |
| vs->as.nchannels = read_u8(data, 5); |
| if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
| printf("Invalid audio channel coount %d\n", |
| read_u8(data, 5)); |
| vnc_client_error(vs); |
| break; |
| } |
| vs->as.freq = read_u32(data, 6); |
| break; |
| default: |
| printf ("Invalid audio message %d\n", read_u8(data, 4)); |
| vnc_client_error(vs); |
| break; |
| } |
| break; |
| |
| default: |
| printf("Msg: %d\n", read_u16(data, 0)); |
| vnc_client_error(vs); |
| break; |
| } |
| break; |
| default: |
| printf("Msg: %d\n", data[0]); |
| vnc_client_error(vs); |
| break; |
| } |
| |
| vnc_read_when(vs, protocol_client_msg, 1); |
| return 0; |
| } |
| |
| static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
| { |
| char buf[1024]; |
| VncShareMode mode; |
| int size; |
| |
| mode = data[0] ? VNC_SHARE_MODE_SHARED : VNC_SHARE_MODE_EXCLUSIVE; |
| switch (vs->vd->share_policy) { |
| case VNC_SHARE_POLICY_IGNORE: |
| /* |
| * Ignore the shared flag. Nothing to do here. |
| * |
| * Doesn't conform to the rfb spec but is traditional qemu |
| * behavior, thus left here as option for compatibility |
| * reasons. |
| */ |
| break; |
| case VNC_SHARE_POLICY_ALLOW_EXCLUSIVE: |
| /* |
| * Policy: Allow clients ask for exclusive access. |
| * |
| * Implementation: When a client asks for exclusive access, |
| * disconnect all others. Shared connects are allowed as long |
| * as no exclusive connection exists. |
| * |
| * This is how the rfb spec suggests to handle the shared flag. |
| */ |
| if (mode == VNC_SHARE_MODE_EXCLUSIVE) { |
| VncState *client; |
| QTAILQ_FOREACH(client, &vs->vd->clients, next) { |
| if (vs == client) { |
| continue; |
| } |
| if (client->share_mode != VNC_SHARE_MODE_EXCLUSIVE && |
| client->share_mode != VNC_SHARE_MODE_SHARED) { |
| continue; |
| } |
| vnc_disconnect_start(client); |
| } |
| } |
| if (mode == VNC_SHARE_MODE_SHARED) { |
| if (vs->vd->num_exclusive > 0) { |
| vnc_disconnect_start(vs); |
| return 0; |
| } |
| } |
| break; |
| case VNC_SHARE_POLICY_FORCE_SHARED: |
| /* |
| * Policy: Shared connects only. |
| * Implementation: Disallow clients asking for exclusive access. |
| * |
| * Useful for shared desktop sessions where you don't want |
| * someone forgetting to say -shared when running the vnc |
| * client disconnect everybody else. |
| */ |
| if (mode == VNC_SHARE_MODE_EXCLUSIVE) { |
| vnc_disconnect_start(vs); |
| return 0; |
| } |
| break; |
| } |
| vnc_set_share_mode(vs, mode); |
| |
| vs->client_width = ds_get_width(vs->ds); |
| vs->client_height = ds_get_height(vs->ds); |
| vnc_write_u16(vs, vs->client_width); |
| vnc_write_u16(vs, vs->client_height); |
| |
| pixel_format_message(vs); |
| |
| if (qemu_name) |
| size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
| else |
| size = snprintf(buf, sizeof(buf), "QEMU"); |
| |
| vnc_write_u32(vs, size); |
| vnc_write(vs, buf, size); |
| vnc_flush(vs); |
| |
| vnc_client_cache_auth(vs); |
| vnc_qmp_event(vs, QEVENT_VNC_INITIALIZED); |
| |
| vnc_read_when(vs, protocol_client_msg, 1); |
| |
| return 0; |
| } |
| |
| void start_client_init(VncState *vs) |
| { |
| vnc_read_when(vs, protocol_client_init, 1); |
| } |
| |
| static void make_challenge(VncState *vs) |
| { |
| int i; |
| |
| srand(time(NULL)+getpid()+getpid()*987654+rand()); |
| |
| for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
| vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
| } |
| |
| static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
| { |
| unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
| int i, j, pwlen; |
| unsigned char key[8]; |
| time_t now = time(NULL); |
| |
| if (!vs->vd->password) { |
| VNC_DEBUG("No password configured on server"); |
| goto reject; |
| } |
| if (vs->vd->expires < now) { |
| VNC_DEBUG("Password is expired"); |
| goto reject; |
| } |
| |
| memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
| |
| /* Calculate the expected challenge response */ |
| pwlen = strlen(vs->vd->password); |
| for (i=0; i<sizeof(key); i++) |
| key[i] = i<pwlen ? vs->vd->password[i] : 0; |
| deskey(key, EN0); |
| for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
| des(response+j, response+j); |
| |
| /* Compare expected vs actual challenge response */ |
| if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
| VNC_DEBUG("Client challenge response did not match\n"); |
| goto reject; |
| } else { |
| VNC_DEBUG("Accepting VNC challenge response\n"); |
| vnc_write_u32(vs, 0); /* Accept auth */ |
| vnc_flush(vs); |
| |
| start_client_init(vs); |
| } |
| return 0; |
| |
| reject: |
| vnc_write_u32(vs, 1); /* Reject auth */ |
| if (vs->minor >= 8) { |
| static const char err[] = "Authentication failed"; |
| vnc_write_u32(vs, sizeof(err)); |
| vnc_write(vs, err, sizeof(err)); |
| } |
| vnc_flush(vs); |
| vnc_client_error(vs); |
| return 0; |
| } |
| |
| void start_auth_vnc(VncState *vs) |
| { |
| make_challenge(vs); |
| /* Send client a 'random' challenge */ |
| vnc_write(vs, vs->challenge, sizeof(vs->challenge)); |
| vnc_flush(vs); |
| |
| vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge)); |
| } |
| |
| |
| static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
| { |
| /* We only advertise 1 auth scheme at a time, so client |
| * must pick the one we sent. Verify this */ |
| if (data[0] != vs->auth) { /* Reject auth */ |
| VNC_DEBUG("Reject auth %d because it didn't match advertized\n", (int)data[0]); |
| vnc_write_u32(vs, 1); |
| if (vs->minor >= 8) { |
| static const char err[] = "Authentication failed"; |
| vnc_write_u32(vs, sizeof(err)); |
| vnc_write(vs, err, sizeof(err)); |
| } |
| vnc_client_error(vs); |
| } else { /* Accept requested auth */ |
| VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
| switch (vs->auth) { |
| case VNC_AUTH_NONE: |
| VNC_DEBUG("Accept auth none\n"); |
| if (vs->minor >= 8) { |
| vnc_write_u32(vs, 0); /* Accept auth completion */ |
| vnc_flush(vs); |
| } |
| start_client_init(vs); |
| break; |
| |
| case VNC_AUTH_VNC: |
| VNC_DEBUG("Start VNC auth\n"); |
| start_auth_vnc(vs); |
| break; |
| |
| #ifdef CONFIG_VNC_TLS |
| case VNC_AUTH_VENCRYPT: |
| VNC_DEBUG("Accept VeNCrypt auth\n"); |
| start_auth_vencrypt(vs); |
| break; |
| #endif /* CONFIG_VNC_TLS */ |
| |
| #ifdef CONFIG_VNC_SASL |
| case VNC_AUTH_SASL: |
| VNC_DEBUG("Accept SASL auth\n"); |
| start_auth_sasl(vs); |
| break; |
| #endif /* CONFIG_VNC_SASL */ |
| |
| default: /* Should not be possible, but just in case */ |
| VNC_DEBUG("Reject auth %d server code bug\n", vs->auth); |
| vnc_write_u8(vs, 1); |
| if (vs->minor >= 8) { |
| static const char err[] = "Authentication failed"; |
| vnc_write_u32(vs, sizeof(err)); |
| vnc_write(vs, err, sizeof(err)); |
| } |
| vnc_client_error(vs); |
| } |
| } |
| return 0; |
| } |
| |
| static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
| { |
| char local[13]; |
| |
| memcpy(local, version, 12); |
| local[12] = 0; |
| |
| if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
| VNC_DEBUG("Malformed protocol version %s\n", local); |
| vnc_client_error(vs); |
| return 0; |
| } |
| VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor); |
| if (vs->major != 3 || |
| (vs->minor != 3 && |
| vs->minor != 4 && |
| vs->minor != 5 && |
| vs->minor != 7 && |
| vs->minor != 8)) { |
| VNC_DEBUG("Unsupported client version\n"); |
| vnc_write_u32(vs, VNC_AUTH_INVALID); |
| vnc_flush(vs); |
| vnc_client_error(vs); |
| return 0; |
| } |
| /* Some broken clients report v3.4 or v3.5, which spec requires to be treated |
| * as equivalent to v3.3 by servers |
| */ |
| if (vs->minor == 4 || vs->minor == 5) |
| vs->minor = 3; |
| |
| if (vs->minor == 3) { |
| if (vs->auth == VNC_AUTH_NONE) { |
| VNC_DEBUG("Tell client auth none\n"); |
| vnc_write_u32(vs, vs->auth); |
| vnc_flush(vs); |
| start_client_init(vs); |
| } else if (vs->auth == VNC_AUTH_VNC) { |
| VNC_DEBUG("Tell client VNC auth\n"); |
| vnc_write_u32(vs, vs->auth); |
| vnc_flush(vs); |
| start_auth_vnc(vs); |
| } else { |
| VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth); |
| vnc_write_u32(vs, VNC_AUTH_INVALID); |
| vnc_flush(vs); |
| vnc_client_error(vs); |
| } |
| } else { |
| VNC_DEBUG("Telling client we support auth %d\n", vs->auth); |
| vnc_write_u8(vs, 1); /* num auth */ |
| vnc_write_u8(vs, vs->auth); |
| vnc_read_when(vs, protocol_client_auth, 1); |
| vnc_flush(vs); |
| } |
| |
| return 0; |
| } |
| |
| static VncRectStat *vnc_stat_rect(VncDisplay *vd, int x, int y) |
| { |
| struct VncSurface *vs = &vd->guest; |
| |
| return &vs->stats[y / VNC_STAT_RECT][x / VNC_STAT_RECT]; |
| } |
| |
| void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h) |
| { |
| int i, j; |
| |
| w = (x + w) / VNC_STAT_RECT; |
| h = (y + h) / VNC_STAT_RECT; |
| x /= VNC_STAT_RECT; |
| y /= VNC_STAT_RECT; |
| |
| for (j = y; j <= h; j++) { |
| for (i = x; i <= w; i++) { |
| vs->lossy_rect[j][i] = 1; |
| } |
| } |
| } |
| |
| static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y) |
| { |
| VncState *vs; |
| int sty = y / VNC_STAT_RECT; |
| int stx = x / VNC_STAT_RECT; |
| int has_dirty = 0; |
| |
| y = y / VNC_STAT_RECT * VNC_STAT_RECT; |
| x = x / VNC_STAT_RECT * VNC_STAT_RECT; |
| |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| int j; |
| |
| /* kernel send buffers are full -> refresh later */ |
| if (vs->output.offset) { |
| continue; |
| } |
| |
| if (!vs->lossy_rect[sty][stx]) { |
| continue; |
| } |
| |
| vs->lossy_rect[sty][stx] = 0; |
| for (j = 0; j < VNC_STAT_RECT; ++j) { |
| bitmap_set(vs->dirty[y + j], x / 16, VNC_STAT_RECT / 16); |
| } |
| has_dirty++; |
| } |
| |
| return has_dirty; |
| } |
| |
| static int vnc_update_stats(VncDisplay *vd, struct timeval * tv) |
| { |
| int x, y; |
| struct timeval res; |
| int has_dirty = 0; |
| |
| for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) { |
| for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) { |
| VncRectStat *rect = vnc_stat_rect(vd, x, y); |
| |
| rect->updated = false; |
| } |
| } |
| |
| qemu_timersub(tv, &VNC_REFRESH_STATS, &res); |
| |
| if (timercmp(&vd->guest.last_freq_check, &res, >)) { |
| return has_dirty; |
| } |
| vd->guest.last_freq_check = *tv; |
| |
| for (y = 0; y < vd->guest.ds->height; y += VNC_STAT_RECT) { |
| for (x = 0; x < vd->guest.ds->width; x += VNC_STAT_RECT) { |
| VncRectStat *rect= vnc_stat_rect(vd, x, y); |
| int count = ARRAY_SIZE(rect->times); |
| struct timeval min, max; |
| |
| if (!timerisset(&rect->times[count - 1])) { |
| continue ; |
| } |
| |
| max = rect->times[(rect->idx + count - 1) % count]; |
| qemu_timersub(tv, &max, &res); |
| |
| if (timercmp(&res, &VNC_REFRESH_LOSSY, >)) { |
| rect->freq = 0; |
| has_dirty += vnc_refresh_lossy_rect(vd, x, y); |
| memset(rect->times, 0, sizeof (rect->times)); |
| continue ; |
| } |
| |
| min = rect->times[rect->idx]; |
| max = rect->times[(rect->idx + count - 1) % count]; |
| qemu_timersub(&max, &min, &res); |
| |
| rect->freq = res.tv_sec + res.tv_usec / 1000000.; |
| rect->freq /= count; |
| rect->freq = 1. / rect->freq; |
| } |
| } |
| return has_dirty; |
| } |
| |
| double vnc_update_freq(VncState *vs, int x, int y, int w, int h) |
| { |
| int i, j; |
| double total = 0; |
| int num = 0; |
| |
| x = (x / VNC_STAT_RECT) * VNC_STAT_RECT; |
| y = (y / VNC_STAT_RECT) * VNC_STAT_RECT; |
| |
| for (j = y; j <= y + h; j += VNC_STAT_RECT) { |
| for (i = x; i <= x + w; i += VNC_STAT_RECT) { |
| total += vnc_stat_rect(vs->vd, i, j)->freq; |
| num++; |
| } |
| } |
| |
| if (num) { |
| return total / num; |
| } else { |
| return 0; |
| } |
| } |
| |
| static void vnc_rect_updated(VncDisplay *vd, int x, int y, struct timeval * tv) |
| { |
| VncRectStat *rect; |
| |
| rect = vnc_stat_rect(vd, x, y); |
| if (rect->updated) { |
| return ; |
| } |
| rect->times[rect->idx] = *tv; |
| rect->idx = (rect->idx + 1) % ARRAY_SIZE(rect->times); |
| rect->updated = true; |
| } |
| |
| static int vnc_refresh_server_surface(VncDisplay *vd) |
| { |
| int y; |
| uint8_t *guest_row; |
| uint8_t *server_row; |
| int cmp_bytes; |
| VncState *vs; |
| int has_dirty = 0; |
| |
| struct timeval tv = { 0, 0 }; |
| |
| if (!vd->non_adaptive) { |
| gettimeofday(&tv, NULL); |
| has_dirty = vnc_update_stats(vd, &tv); |
| } |
| |
| /* |
| * Walk through the guest dirty map. |
| * Check and copy modified bits from guest to server surface. |
| * Update server dirty map. |
| */ |
| cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds); |
| if (cmp_bytes > vd->ds->surface->linesize) { |
| cmp_bytes = vd->ds->surface->linesize; |
| } |
| guest_row = vd->guest.ds->data; |
| server_row = vd->server->data; |
| for (y = 0; y < vd->guest.ds->height; y++) { |
| if (!bitmap_empty(vd->guest.dirty[y], VNC_DIRTY_BITS)) { |
| int x; |
| uint8_t *guest_ptr; |
| uint8_t *server_ptr; |
| |
| guest_ptr = guest_row; |
| server_ptr = server_row; |
| |
| for (x = 0; x + 15 < vd->guest.ds->width; |
| x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) { |
| if (!test_and_clear_bit((x / 16), vd->guest.dirty[y])) |
| continue; |
| if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) |
| continue; |
| memcpy(server_ptr, guest_ptr, cmp_bytes); |
| if (!vd->non_adaptive) |
| vnc_rect_updated(vd, x, y, &tv); |
| QTAILQ_FOREACH(vs, &vd->clients, next) { |
| set_bit((x / 16), vs->dirty[y]); |
| } |
| has_dirty++; |
| } |
| } |
| guest_row += ds_get_linesize(vd->ds); |
| server_row += ds_get_linesize(vd->ds); |
| } |
| return has_dirty; |
| } |
| |
| static void vnc_refresh(void *opaque) |
| { |
| VncDisplay *vd = opaque; |
| VncState *vs, *vn; |
| int has_dirty, rects = 0; |
| |
| vga_hw_update(); |
| |
| if (vnc_trylock_display(vd)) { |
| vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + |
| vd->timer_interval); |
| return; |
| } |
| |
| has_dirty = vnc_refresh_server_surface(vd); |
| vnc_unlock_display(vd); |
| |
| QTAILQ_FOREACH_SAFE(vs, &vd->clients, next, vn) { |
| rects += vnc_update_client(vs, has_dirty); |
| /* vs might be free()ed here */ |
| } |
| |
| /* vd->timer could be NULL now if the last client disconnected, |
| * in this case don't update the timer */ |
| if (vd->timer == NULL) |
| return; |
| |
| if (has_dirty && rects) { |
| vd->timer_interval /= 2; |
| if (vd->timer_interval < VNC_REFRESH_INTERVAL_BASE) |
| vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| } else { |
| vd->timer_interval += VNC_REFRESH_INTERVAL_INC; |
| if (vd->timer_interval > VNC_REFRESH_INTERVAL_MAX) |
| vd->timer_interval = VNC_REFRESH_INTERVAL_MAX; |
| } |
| qemu_mod_timer(vd->timer, qemu_get_clock_ms(rt_clock) + vd->timer_interval); |
| } |
| |
| static void vnc_init_timer(VncDisplay *vd) |
| { |
| vd->timer_interval = VNC_REFRESH_INTERVAL_BASE; |
| if (vd->timer == NULL && !QTAILQ_EMPTY(&vd->clients)) { |
| vd->timer = qemu_new_timer_ms(rt_clock, vnc_refresh, vd); |
| vnc_dpy_resize(vd->ds); |
| vnc_refresh(vd); |
| } |
| } |
| |
| static void vnc_remove_timer(VncDisplay *vd) |
| { |
| if (vd->timer != NULL && QTAILQ_EMPTY(&vd->clients)) { |
| qemu_del_timer(vd->timer); |
| qemu_free_timer(vd->timer); |
| vd->timer = NULL; |
| } |
| } |
| |
| static void vnc_connect(VncDisplay *vd, int csock, int skipauth) |
| { |
| VncState *vs = g_malloc0(sizeof(VncState)); |
| int i; |
| |
| vs->csock = csock; |
| |
| if (skipauth) { |
| vs->auth = VNC_AUTH_NONE; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = VNC_AUTH_INVALID; |
| #endif |
| } else { |
| vs->auth = vd->auth; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = vd->subauth; |
| #endif |
| } |
| |
| vs->lossy_rect = g_malloc0(VNC_STAT_ROWS * sizeof (*vs->lossy_rect)); |
| for (i = 0; i < VNC_STAT_ROWS; ++i) { |
| vs->lossy_rect[i] = g_malloc0(VNC_STAT_COLS * sizeof (uint8_t)); |
| } |
| |
| VNC_DEBUG("New client on socket %d\n", csock); |
| dcl->idle = 0; |
| socket_set_nonblock(vs->csock); |
| qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
| |
| vnc_client_cache_addr(vs); |
| vnc_qmp_event(vs, QEVENT_VNC_CONNECTED); |
| vnc_set_share_mode(vs, VNC_SHARE_MODE_CONNECTING); |
| |
| vs->vd = vd; |
| vs->ds = vd->ds; |
| vs->last_x = -1; |
| vs->last_y = -1; |
| |
| vs->as.freq = 44100; |
| vs->as.nchannels = 2; |
| vs->as.fmt = AUD_FMT_S16; |
| vs->as.endianness = 0; |
| |
| qemu_mutex_init(&vs->output_mutex); |
| vs->bh = qemu_bh_new(vnc_jobs_bh, vs); |
| |
| QTAILQ_INSERT_HEAD(&vd->clients, vs, next); |
| |
| vga_hw_update(); |
| |
| vnc_write(vs, "RFB 003.008\n", 12); |
| vnc_flush(vs); |
| vnc_read_when(vs, protocol_version, 12); |
| reset_keys(vs); |
| if (vs->vd->lock_key_sync) |
| vs->led = qemu_add_led_event_handler(kbd_leds, vs); |
| |
| vs->mouse_mode_notifier.notify = check_pointer_type_change; |
| qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier); |
| |
| vnc_init_timer(vd); |
| |
| /* vs might be free()ed here */ |
| } |
| |
| static void vnc_listen_read(void *opaque) |
| { |
| VncDisplay *vs = opaque; |
| struct sockaddr_in addr; |
| socklen_t addrlen = sizeof(addr); |
| |
| /* Catch-up */ |
| vga_hw_update(); |
| |
| int csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); |
| if (csock != -1) { |
| vnc_connect(vs, csock, 0); |
| } |
| } |
| |
| void vnc_display_init(DisplayState *ds) |
| { |
| VncDisplay *vs = g_malloc0(sizeof(*vs)); |
| |
| dcl = g_malloc0(sizeof(DisplayChangeListener)); |
| |
| ds->opaque = vs; |
| dcl->idle = 1; |
| vnc_display = vs; |
| |
| vs->lsock = -1; |
| |
| vs->ds = ds; |
| QTAILQ_INIT(&vs->clients); |
| vs->expires = TIME_MAX; |
| |
| if (keyboard_layout) |
| vs->kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); |
| else |
| vs->kbd_layout = init_keyboard_layout(name2keysym, "en-us"); |
| |
| if (!vs->kbd_layout) |
| exit(1); |
| |
| qemu_mutex_init(&vs->mutex); |
| vnc_start_worker_thread(); |
| |
| dcl->dpy_copy = vnc_dpy_copy; |
| dcl->dpy_update = vnc_dpy_update; |
| dcl->dpy_resize = vnc_dpy_resize; |
| dcl->dpy_setdata = vnc_dpy_setdata; |
| register_displaychangelistener(ds, dcl); |
| ds->mouse_set = vnc_mouse_set; |
| ds->cursor_define = vnc_dpy_cursor_define; |
| } |
| |
| |
| void vnc_display_close(DisplayState *ds) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| if (!vs) |
| return; |
| if (vs->display) { |
| g_free(vs->display); |
| vs->display = NULL; |
| } |
| if (vs->lsock != -1) { |
| qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
| close(vs->lsock); |
| vs->lsock = -1; |
| } |
| vs->auth = VNC_AUTH_INVALID; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = VNC_AUTH_INVALID; |
| vs->tls.x509verify = 0; |
| #endif |
| } |
| |
| int vnc_display_disable_login(DisplayState *ds) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| if (!vs) { |
| return -1; |
| } |
| |
| if (vs->password) { |
| g_free(vs->password); |
| } |
| |
| vs->password = NULL; |
| if (vs->auth == VNC_AUTH_NONE) { |
| vs->auth = VNC_AUTH_VNC; |
| } |
| |
| return 0; |
| } |
| |
| int vnc_display_password(DisplayState *ds, const char *password) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| if (!vs) { |
| return -EINVAL; |
| } |
| |
| if (!password) { |
| /* This is not the intention of this interface but err on the side |
| of being safe */ |
| return vnc_display_disable_login(ds); |
| } |
| |
| if (vs->password) { |
| g_free(vs->password); |
| vs->password = NULL; |
| } |
| vs->password = g_strdup(password); |
| if (vs->auth == VNC_AUTH_NONE) { |
| vs->auth = VNC_AUTH_VNC; |
| } |
| |
| return 0; |
| } |
| |
| int vnc_display_pw_expire(DisplayState *ds, time_t expires) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| if (!vs) { |
| return -EINVAL; |
| } |
| |
| vs->expires = expires; |
| return 0; |
| } |
| |
| char *vnc_display_local_addr(DisplayState *ds) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| return vnc_socket_local_addr("%s:%s", vs->lsock); |
| } |
| |
| int vnc_display_open(DisplayState *ds, const char *display) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| const char *options; |
| int password = 0; |
| int reverse = 0; |
| #ifdef CONFIG_VNC_TLS |
| int tls = 0, x509 = 0; |
| #endif |
| #ifdef CONFIG_VNC_SASL |
| int sasl = 0; |
| int saslErr; |
| #endif |
| #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL) |
| int acl = 0; |
| #endif |
| int lock_key_sync = 1; |
| |
| if (!vnc_display) |
| return -1; |
| vnc_display_close(ds); |
| if (strcmp(display, "none") == 0) |
| return 0; |
| |
| if (!(vs->display = strdup(display))) |
| return -1; |
| vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE; |
| |
| options = display; |
| while ((options = strchr(options, ','))) { |
| options++; |
| if (strncmp(options, "password", 8) == 0) { |
| password = 1; /* Require password auth */ |
| } else if (strncmp(options, "reverse", 7) == 0) { |
| reverse = 1; |
| } else if (strncmp(options, "no-lock-key-sync", 16) == 0) { |
| lock_key_sync = 0; |
| #ifdef CONFIG_VNC_SASL |
| } else if (strncmp(options, "sasl", 4) == 0) { |
| sasl = 1; /* Require SASL auth */ |
| #endif |
| #ifdef CONFIG_VNC_TLS |
| } else if (strncmp(options, "tls", 3) == 0) { |
| tls = 1; /* Require TLS */ |
| } else if (strncmp(options, "x509", 4) == 0) { |
| char *start, *end; |
| x509 = 1; /* Require x509 certificates */ |
| if (strncmp(options, "x509verify", 10) == 0) |
| vs->tls.x509verify = 1; /* ...and verify client certs */ |
| |
| /* Now check for 'x509=/some/path' postfix |
| * and use that to setup x509 certificate/key paths */ |
| start = strchr(options, '='); |
| end = strchr(options, ','); |
| if (start && (!end || (start < end))) { |
| int len = end ? end-(start+1) : strlen(start+1); |
| char *path = g_strndup(start + 1, len); |
| |
| VNC_DEBUG("Trying certificate path '%s'\n", path); |
| if (vnc_tls_set_x509_creds_dir(vs, path) < 0) { |
| fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path); |
| g_free(path); |
| g_free(vs->display); |
| vs->display = NULL; |
| return -1; |
| } |
| g_free(path); |
| } else { |
| fprintf(stderr, "No certificate path provided\n"); |
| g_free(vs->display); |
| vs->display = NULL; |
| return -1; |
| } |
| #endif |
| #if defined(CONFIG_VNC_TLS) || defined(CONFIG_VNC_SASL) |
| } else if (strncmp(options, "acl", 3) == 0) { |
| acl = 1; |
| #endif |
| } else if (strncmp(options, "lossy", 5) == 0) { |
| vs->lossy = true; |
| } else if (strncmp(options, "non-adapative", 13) == 0) { |
| vs->non_adaptive = true; |
| } else if (strncmp(options, "share=", 6) == 0) { |
| if (strncmp(options+6, "ignore", 6) == 0) { |
| vs->share_policy = VNC_SHARE_POLICY_IGNORE; |
| } else if (strncmp(options+6, "allow-exclusive", 15) == 0) { |
| vs->share_policy = VNC_SHARE_POLICY_ALLOW_EXCLUSIVE; |
| } else if (strncmp(options+6, "force-shared", 12) == 0) { |
| vs->share_policy = VNC_SHARE_POLICY_FORCE_SHARED; |
| } else { |
| fprintf(stderr, "unknown vnc share= option\n"); |
| g_free(vs->display); |
| vs->display = NULL; |
| return -1; |
| } |
| } |
| } |
| |
| #ifdef CONFIG_VNC_TLS |
| if (acl && x509 && vs->tls.x509verify) { |
| if (!(vs->tls.acl = qemu_acl_init("vnc.x509dname"))) { |
| fprintf(stderr, "Failed to create x509 dname ACL\n"); |
| exit(1); |
| } |
| } |
| #endif |
| #ifdef CONFIG_VNC_SASL |
| if (acl && sasl) { |
| if (!(vs->sasl.acl = qemu_acl_init("vnc.username"))) { |
| fprintf(stderr, "Failed to create username ACL\n"); |
| exit(1); |
| } |
| } |
| #endif |
| |
| /* |
| * Combinations we support here: |
| * |
| * - no-auth (clear text, no auth) |
| * - password (clear text, weak auth) |
| * - sasl (encrypt, good auth *IF* using Kerberos via GSSAPI) |
| * - tls (encrypt, weak anonymous creds, no auth) |
| * - tls + password (encrypt, weak anonymous creds, weak auth) |
| * - tls + sasl (encrypt, weak anonymous creds, good auth) |
| * - tls + x509 (encrypt, good x509 creds, no auth) |
| * - tls + x509 + password (encrypt, good x509 creds, weak auth) |
| * - tls + x509 + sasl (encrypt, good x509 creds, good auth) |
| * |
| * NB1. TLS is a stackable auth scheme. |
| * NB2. the x509 schemes have option to validate a client cert dname |
| */ |
| if (password) { |
| #ifdef CONFIG_VNC_TLS |
| if (tls) { |
| vs->auth = VNC_AUTH_VENCRYPT; |
| if (x509) { |
| VNC_DEBUG("Initializing VNC server with x509 password auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
| } else { |
| VNC_DEBUG("Initializing VNC server with TLS password auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
| } |
| } else { |
| #endif /* CONFIG_VNC_TLS */ |
| VNC_DEBUG("Initializing VNC server with password auth\n"); |
| vs->auth = VNC_AUTH_VNC; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = VNC_AUTH_INVALID; |
| } |
| #endif /* CONFIG_VNC_TLS */ |
| #ifdef CONFIG_VNC_SASL |
| } else if (sasl) { |
| #ifdef CONFIG_VNC_TLS |
| if (tls) { |
| vs->auth = VNC_AUTH_VENCRYPT; |
| if (x509) { |
| VNC_DEBUG("Initializing VNC server with x509 SASL auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_X509SASL; |
| } else { |
| VNC_DEBUG("Initializing VNC server with TLS SASL auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_TLSSASL; |
| } |
| } else { |
| #endif /* CONFIG_VNC_TLS */ |
| VNC_DEBUG("Initializing VNC server with SASL auth\n"); |
| vs->auth = VNC_AUTH_SASL; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = VNC_AUTH_INVALID; |
| } |
| #endif /* CONFIG_VNC_TLS */ |
| #endif /* CONFIG_VNC_SASL */ |
| } else { |
| #ifdef CONFIG_VNC_TLS |
| if (tls) { |
| vs->auth = VNC_AUTH_VENCRYPT; |
| if (x509) { |
| VNC_DEBUG("Initializing VNC server with x509 no auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
| } else { |
| VNC_DEBUG("Initializing VNC server with TLS no auth\n"); |
| vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
| } |
| } else { |
| #endif |
| VNC_DEBUG("Initializing VNC server with no auth\n"); |
| vs->auth = VNC_AUTH_NONE; |
| #ifdef CONFIG_VNC_TLS |
| vs->subauth = VNC_AUTH_INVALID; |
| } |
| #endif |
| } |
| |
| #ifdef CONFIG_VNC_SASL |
| if ((saslErr = sasl_server_init(NULL, "qemu")) != SASL_OK) { |
| fprintf(stderr, "Failed to initialize SASL auth %s", |
| sasl_errstring(saslErr, NULL, NULL)); |
| g_free(vs->display); |
| vs->display = NULL; |
| return -1; |
| } |
| #endif |
| vs->lock_key_sync = lock_key_sync; |
| |
| if (reverse) { |
| /* connect to viewer */ |
| if (strncmp(display, "unix:", 5) == 0) |
| vs->lsock = unix_connect(display+5); |
| else |
| vs->lsock = inet_connect(display, true, NULL); |
| if (-1 == vs->lsock) { |
| g_free(vs->display); |
| vs->display = NULL; |
| return -1; |
| } else { |
| int csock = vs->lsock; |
| vs->lsock = -1; |
| vnc_connect(vs, csock, 0); |
| } |
| return 0; |
| |
| } else { |
| /* listen for connects */ |
| char *dpy; |
| dpy = g_malloc(256); |
| if (strncmp(display, "unix:", 5) == 0) { |
| pstrcpy(dpy, 256, "unix:"); |
| vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
| } else { |
| vs->lsock = inet_listen(display, dpy, 256, |
| SOCK_STREAM, 5900, NULL); |
| } |
| if (-1 == vs->lsock) { |
| g_free(dpy); |
| return -1; |
| } else { |
| g_free(vs->display); |
| vs->display = dpy; |
| } |
| } |
| return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); |
| } |
| |
| void vnc_display_add_client(DisplayState *ds, int csock, int skipauth) |
| { |
| VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; |
| |
| return vnc_connect(vs, csock, skipauth); |
| } |