diff options
Diffstat (limited to 'ui/vnc.c')
| -rw-r--r-- | ui/vnc.c | 2631 |
1 files changed, 2631 insertions, 0 deletions
diff --git a/ui/vnc.c b/ui/vnc.c new file mode 100644 index 000000000..ccd7aad86 --- /dev/null +++ b/ui/vnc.c @@ -0,0 +1,2631 @@ +/* + * 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 "sysemu.h" +#include "qemu_socket.h" +#include "qemu-timer.h" +#include "acl.h" +#include "qemu-objects.h" + +#define VNC_REFRESH_INTERVAL_BASE 30 +#define VNC_REFRESH_INTERVAL_INC 50 +#define VNC_REFRESH_INTERVAL_MAX 2000 + +#include "vnc_keysym.h" +#include "d3des.h" + +#define count_bits(c, v) { \ + for (c = 0; v; v >>= 1) \ + { \ + c += v & 1; \ + } \ +} + + +static VncDisplay *vnc_display; /* needed for info vnc */ +static DisplayChangeListener *dcl; + +static int vnc_cursor_define(VncState *vs); + +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 = qemu_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) +{ + QDict *qdict; + + if (!client->info) { + return; + } + + qdict = qobject_to_qdict(client->info); + +#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 void info_vnc_iter(QObject *obj, void *opaque) +{ + QDict *client; + Monitor *mon = opaque; + + client = qobject_to_qdict(obj); + monitor_printf(mon, "Client:\n"); + monitor_printf(mon, " address: %s:%s\n", + qdict_get_str(client, "host"), + qdict_get_str(client, "service")); + +#ifdef CONFIG_VNC_TLS + monitor_printf(mon, " x509_dname: %s\n", + qdict_haskey(client, "x509_dname") ? + qdict_get_str(client, "x509_dname") : "none"); +#endif +#ifdef CONFIG_VNC_SASL + monitor_printf(mon, " username: %s\n", + qdict_haskey(client, "sasl_username") ? + qdict_get_str(client, "sasl_username") : "none"); +#endif +} + +void do_info_vnc_print(Monitor *mon, const QObject *data) +{ + QDict *server; + QList *clients; + + server = qobject_to_qdict(data); + if (qdict_get_bool(server, "enabled") == 0) { + monitor_printf(mon, "Server: disabled\n"); + return; + } + + monitor_printf(mon, "Server:\n"); + monitor_printf(mon, " address: %s:%s\n", + qdict_get_str(server, "host"), + qdict_get_str(server, "service")); + monitor_printf(mon, " auth: %s\n", qdict_get_str(server, "auth")); + + clients = qdict_get_qlist(server, "clients"); + if (qlist_empty(clients)) { + monitor_printf(mon, "Client: none\n"); + } else { + qlist_iter(clients, info_vnc_iter, mon); + } +} + +void do_info_vnc(Monitor *mon, QObject **ret_data) +{ + if (vnc_display == NULL || vnc_display->display == NULL) { + *ret_data = qobject_from_jsonf("{ 'enabled': false }"); + } else { + QList *clist; + VncState *client; + + clist = qlist_new(); + QTAILQ_FOREACH(client, &vnc_display->clients, next) { + if (client->info) { + /* incref so that it's not freed by upper layers */ + qobject_incref(client->info); + qlist_append_obj(clist, client->info); + } + } + + *ret_data = qobject_from_jsonf("{ 'enabled': true, 'clients': %p }", + QOBJECT(clist)); + assert(*ret_data != NULL); + + if (vnc_server_info_put(qobject_to_qdict(*ret_data)) < 0) { + qobject_decref(*ret_data); + *ret_data = NULL; + } + } +} + +static inline uint32_t vnc_has_feature(VncState *vs, int feature) { + return (vs->features & (1 << feature)); +} + +/* 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 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 inline void vnc_set_bit(uint32_t *d, int k) +{ + d[k >> 5] |= 1 << (k & 0x1f); +} + +static inline void vnc_clear_bit(uint32_t *d, int k) +{ + d[k >> 5] &= ~(1 << (k & 0x1f)); +} + +static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) +{ + int j; + + j = 0; + while (n >= 32) { + d[j++] = -1; + n -= 32; + } + if (n > 0) + d[j++] = (1 << n) - 1; + while (j < nb_words) + d[j++] = 0; +} + +static inline int vnc_get_bit(const uint32_t *d, int k) +{ + return (d[k >> 5] >> (k & 0x1f)) & 1; +} + +static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, + int nb_words) +{ + int i; + for(i = 0; i < nb_words; i++) { + if ((d1[i] & d2[i]) != 0) + return 1; + } + return 0; +} + +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) + vnc_set_bit(s->dirty[y], (x + i) / 16); +} + +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 = qemu_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) +{ + qemu_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_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_flush(vs); +} + +static void vnc_dpy_resize(DisplayState *ds) +{ + VncDisplay *vd = ds->opaque; + VncState *vs; + + /* server surface */ + if (!vd->server) + vd->server = qemu_mallocz(sizeof(*vd->server)); + if (vd->server->data) + qemu_free(vd->server->data); + *(vd->server) = *(ds->surface); + vd->server->data = qemu_mallocz(vd->server->linesize * + vd->server->height); + + /* guest surface */ + if (!vd->guest.ds) + vd->guest.ds = qemu_mallocz(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; +} + +static int 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; + 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_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_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(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)) { + vnc_set_bit(vs->dirty[y], ((x + dst_x) / 16)); + } + } + } + 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_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); + return 0; + } + return -1; +} + +static void vnc_dpy_cursor_define(QEMUCursor *c) +{ + VncDisplay *vd = vnc_display; + VncState *vs; + + cursor_put(vd->cursor); + qemu_free(vd->cursor_mask); + + vd->cursor = c; + cursor_get(vd->cursor); + vd->cursor_msize = cursor_get_mono_bpl(c) * c->height; + vd->cursor_mask = qemu_mallocz(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 h; + VncDisplay *vd = vs->vd; + + for (h = 1; h < (vd->server->height - y); h++) { + int tmp_x; + if (!vnc_get_bit(vs->dirty[y + h], last_x)) + break; + for (tmp_x = last_x; tmp_x < x; tmp_x++) + vnc_clear_bit(vs->dirty[y + h], tmp_x); + } + + return h; +} + +static int vnc_update_client(VncState *vs, int has_dirty) +{ + if (vs->need_update && vs->csock != -1) { + VncDisplay *vd = vs->vd; + int y; + int n_rectangles; + int saved_offset; + int width, height; + int n; + + 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. + */ + n_rectangles = 0; + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); + vnc_write_u8(vs, 0); + saved_offset = vs->output.offset; + vnc_write_u16(vs, 0); + + 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 (vnc_get_bit(vs->dirty[y], x)) { + if (last_x == -1) { + last_x = x; + } + vnc_clear_bit(vs->dirty[y], x); + } else { + if (last_x != -1) { + int h = find_and_clear_dirty_height(vs, y, last_x, x); + n = send_framebuffer_update(vs, last_x * 16, y, + (x - last_x) * 16, h); + n_rectangles += n; + } + last_x = -1; + } + } + if (last_x != -1) { + int h = find_and_clear_dirty_height(vs, y, last_x, x); + n = send_framebuffer_update(vs, last_x * 16, y, + (x - last_x) * 16, h); + n_rectangles += n; + } + } + vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; + vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; + vnc_flush(vs); + vs->force_update = 0; + return n_rectangles; + } + + 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_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_flush(vs); + break; + + case AUD_CNOTIFY_ENABLE: + 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_flush(vs); + break; + } +} + +static void audio_capture_destroy(void *opaque) +{ +} + +static void audio_capture(void *opaque, void *buf, int size) +{ + VncState *vs = opaque; + + 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_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; + qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); + closesocket(vs->csock); + vs->csock = -1; +} + +static void vnc_disconnect_finish(VncState *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); + +#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); + + 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); + qemu_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) + */ +void vnc_client_write(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_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 = recv(vs->csock, (void *)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; +} + + +/* + * 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) +{ + if (vs->csock != -1 && vs->output.offset) + vnc_client_write(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) +{ + 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_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_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 (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 (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 { + /* QEMU console emulation */ + if (down) { + int numlock = vs->modifiers_state[0x45]; + 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: + kbd_put_keysym(sym); + break; + } + } + } +} + +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) +{ + 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; + + int i; + vs->need_update = 1; + if (!incremental) { + vs->force_update = 1; + for (i = 0; i < h; i++) { + vnc_set_bits(vs->dirty[y_position + i], + (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS); + } + } +} + +static void send_ext_key_event_ack(VncState *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_flush(vs); +} + +static void send_ext_audio_ack(VncState *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_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 prefered 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_ZLIB: + vs->features |= VNC_FEATURE_ZLIB_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: + 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); +} + +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; + count_bits(vs->clientds.pf.rbits, red_max); + vs->clientds.pf.rshift = red_shift; + vs->clientds.pf.rmask = red_max << red_shift; + vs->clientds.pf.gmax = green_max; + count_bits(vs->clientds.pf.gbits, green_max); + vs->clientds.pf.gshift = green_shift; + vs->clientds.pf.gmask = green_max << green_shift; + vs->clientds.pf.bmax = blue_max; + count_bits(vs->clientds.pf.bbits, 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) +{ + /* We don't have to do anything */ +} + +static void vnc_colordepth(VncState *vs) +{ + if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) { + /* Sending a WMVi message to notify the client*/ + 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_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(rt_clock) + vd->timer_interval)) + qemu_mod_timer(vd->timer, qemu_get_clock(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]; + int size; + + 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]; + + if (!vs->vd->password || !vs->vd->password[0]) { + VNC_DEBUG("No password configured on server"); + 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; + } + + 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 reponse did not match\n"); + 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); + } else { + VNC_DEBUG("Accepting VNC challenge response\n"); + vnc_write_u32(vs, 0); /* Accept auth */ + vnc_flush(vs); + + start_client_init(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->vd->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->vd->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->vd->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->vd->auth == VNC_AUTH_NONE) { + VNC_DEBUG("Tell client auth none\n"); + vnc_write_u32(vs, vs->vd->auth); + vnc_flush(vs); + start_client_init(vs); + } else if (vs->vd->auth == VNC_AUTH_VNC) { + VNC_DEBUG("Tell client VNC auth\n"); + vnc_write_u32(vs, vs->vd->auth); + vnc_flush(vs); + start_auth_vnc(vs); + } else { + VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->vd->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->vd->auth); + vnc_write_u8(vs, 1); /* num auth */ + vnc_write_u8(vs, vs->vd->auth); + vnc_read_when(vs, protocol_client_auth, 1); + vnc_flush(vs); + } + + return 0; +} + +static int vnc_refresh_server_surface(VncDisplay *vd) +{ + int y; + uint8_t *guest_row; + uint8_t *server_row; + int cmp_bytes; + uint32_t width_mask[VNC_DIRTY_WORDS]; + VncState *vs; + int has_dirty = 0; + + /* + * Walk through the guest dirty map. + * Check and copy modified bits from guest to server surface. + * Update server dirty map. + */ + vnc_set_bits(width_mask, (ds_get_width(vd->ds) / 16), VNC_DIRTY_WORDS); + cmp_bytes = 16 * ds_get_bytes_per_pixel(vd->ds); + guest_row = vd->guest.ds->data; + server_row = vd->server->data; + for (y = 0; y < vd->guest.ds->height; y++) { + if (vnc_and_bits(vd->guest.dirty[y], width_mask, VNC_DIRTY_WORDS)) { + int x; + uint8_t *guest_ptr; + uint8_t *server_ptr; + + guest_ptr = guest_row; + server_ptr = server_row; + + for (x = 0; x < vd->guest.ds->width; + x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) { + if (!vnc_get_bit(vd->guest.dirty[y], (x / 16))) + continue; + vnc_clear_bit(vd->guest.dirty[y], (x / 16)); + if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) + continue; + memcpy(server_ptr, guest_ptr, cmp_bytes); + QTAILQ_FOREACH(vs, &vd->clients, next) { + vnc_set_bit(vs->dirty[y], (x / 16)); + } + 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(); + + has_dirty = vnc_refresh_server_surface(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(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(rt_clock, vnc_refresh, vd); + 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) +{ + VncState *vs = qemu_mallocz(sizeof(VncState)); + vs->csock = csock; + + 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); + + 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; + + 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); + } +} + +void vnc_display_init(DisplayState *ds) +{ + VncDisplay *vs = qemu_mallocz(sizeof(*vs)); + + dcl = qemu_mallocz(sizeof(DisplayChangeListener)); + + ds->opaque = vs; + dcl->idle = 1; + vnc_display = vs; + + vs->lsock = -1; + + vs->ds = ds; + QTAILQ_INIT(&vs->clients); + + 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); + + 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) { + qemu_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_password(DisplayState *ds, const char *password) +{ + VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display; + + if (!vs) { + return -1; + } + + if (vs->password) { + qemu_free(vs->password); + vs->password = NULL; + } + if (password && password[0]) { + if (!(vs->password = qemu_strdup(password))) + return -1; + if (vs->auth == VNC_AUTH_NONE) { + vs->auth = VNC_AUTH_VNC; + } + } else { + vs->auth = VNC_AUTH_NONE; + } + + 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 + int acl = 0; + 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; + + 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", 9) == 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 = qemu_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); + qemu_free(path); + qemu_free(vs->display); + vs->display = NULL; + return -1; + } + qemu_free(path); + } else { + fprintf(stderr, "No certificate path provided\n"); + qemu_free(vs->display); + vs->display = NULL; + return -1; + } +#endif + } else if (strncmp(options, "acl", 3) == 0) { + acl = 1; + } else if (strncmp(options, "lossy", 5) == 0) { + vs->lossy = true; + } + } + +#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)); + 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, SOCK_STREAM); + if (-1 == vs->lsock) { + free(vs->display); + vs->display = NULL; + return -1; + } else { + int csock = vs->lsock; + vs->lsock = -1; + vnc_connect(vs, csock); + } + return 0; + + } else { + /* listen for connects */ + char *dpy; + dpy = qemu_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); + } + if (-1 == vs->lsock) { + free(dpy); + return -1; + } else { + free(vs->display); + vs->display = dpy; + } + } + return qemu_set_fd_handler2(vs->lsock, NULL, vnc_listen_read, NULL, vs); +} |