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qemu/ui/spice-core.c

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/*
* Copyright (C) 2010 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <spice.h>
#include <spice-experimental.h>
#include <netdb.h>
#include "sysemu.h"
#include "qemu-common.h"
#include "qemu-spice.h"
#include "qemu-thread.h"
#include "qemu-timer.h"
#include "qemu-queue.h"
#include "qemu-x509.h"
#include "qemu_socket.h"
#include "qmp-commands.h"
#include "qint.h"
#include "qbool.h"
#include "qstring.h"
#include "qjson.h"
#include "notify.h"
#include "migration.h"
#include "monitor.h"
#include "hw/hw.h"
#include "spice-display.h"
/* core bits */
static SpiceServer *spice_server;
static Notifier migration_state;
static const char *auth = "spice";
static char *auth_passwd;
static time_t auth_expires = TIME_MAX;
static int spice_migration_completed;
int using_spice = 0;
static QemuThread me;
struct SpiceTimer {
QEMUTimer *timer;
QTAILQ_ENTRY(SpiceTimer) next;
};
static QTAILQ_HEAD(, SpiceTimer) timers = QTAILQ_HEAD_INITIALIZER(timers);
static SpiceTimer *timer_add(SpiceTimerFunc func, void *opaque)
{
SpiceTimer *timer;
timer = g_malloc0(sizeof(*timer));
timer->timer = qemu_new_timer_ms(rt_clock, func, opaque);
QTAILQ_INSERT_TAIL(&timers, timer, next);
return timer;
}
static void timer_start(SpiceTimer *timer, uint32_t ms)
{
qemu_mod_timer(timer->timer, qemu_get_clock_ms(rt_clock) + ms);
}
static void timer_cancel(SpiceTimer *timer)
{
qemu_del_timer(timer->timer);
}
static void timer_remove(SpiceTimer *timer)
{
qemu_del_timer(timer->timer);
qemu_free_timer(timer->timer);
QTAILQ_REMOVE(&timers, timer, next);
g_free(timer);
}
struct SpiceWatch {
int fd;
int event_mask;
SpiceWatchFunc func;
void *opaque;
QTAILQ_ENTRY(SpiceWatch) next;
};
static QTAILQ_HEAD(, SpiceWatch) watches = QTAILQ_HEAD_INITIALIZER(watches);
static void watch_read(void *opaque)
{
SpiceWatch *watch = opaque;
watch->func(watch->fd, SPICE_WATCH_EVENT_READ, watch->opaque);
}
static void watch_write(void *opaque)
{
SpiceWatch *watch = opaque;
watch->func(watch->fd, SPICE_WATCH_EVENT_WRITE, watch->opaque);
}
static void watch_update_mask(SpiceWatch *watch, int event_mask)
{
IOHandler *on_read = NULL;
IOHandler *on_write = NULL;
watch->event_mask = event_mask;
if (watch->event_mask & SPICE_WATCH_EVENT_READ) {
on_read = watch_read;
}
if (watch->event_mask & SPICE_WATCH_EVENT_WRITE) {
on_write = watch_write;
}
qemu_set_fd_handler(watch->fd, on_read, on_write, watch);
}
static SpiceWatch *watch_add(int fd, int event_mask, SpiceWatchFunc func, void *opaque)
{
SpiceWatch *watch;
watch = g_malloc0(sizeof(*watch));
watch->fd = fd;
watch->func = func;
watch->opaque = opaque;
QTAILQ_INSERT_TAIL(&watches, watch, next);
watch_update_mask(watch, event_mask);
return watch;
}
static void watch_remove(SpiceWatch *watch)
{
qemu_set_fd_handler(watch->fd, NULL, NULL, NULL);
QTAILQ_REMOVE(&watches, watch, next);
g_free(watch);
}
typedef struct ChannelList ChannelList;
struct ChannelList {
SpiceChannelEventInfo *info;
QTAILQ_ENTRY(ChannelList) link;
};
static QTAILQ_HEAD(, ChannelList) channel_list = QTAILQ_HEAD_INITIALIZER(channel_list);
static void channel_list_add(SpiceChannelEventInfo *info)
{
ChannelList *item;
item = g_malloc0(sizeof(*item));
item->info = info;
QTAILQ_INSERT_TAIL(&channel_list, item, link);
}
static void channel_list_del(SpiceChannelEventInfo *info)
{
ChannelList *item;
QTAILQ_FOREACH(item, &channel_list, link) {
if (item->info != info) {
continue;
}
QTAILQ_REMOVE(&channel_list, item, link);
g_free(item);
return;
}
}
static void add_addr_info(QDict *dict, struct sockaddr *addr, int len)
{
char host[NI_MAXHOST], port[NI_MAXSERV];
const char *family;
getnameinfo(addr, len, host, sizeof(host), port, sizeof(port),
NI_NUMERICHOST | NI_NUMERICSERV);
family = inet_strfamily(addr->sa_family);
qdict_put(dict, "host", qstring_from_str(host));
qdict_put(dict, "port", qstring_from_str(port));
qdict_put(dict, "family", qstring_from_str(family));
}
static void add_channel_info(QDict *dict, SpiceChannelEventInfo *info)
{
int tls = info->flags & SPICE_CHANNEL_EVENT_FLAG_TLS;
qdict_put(dict, "connection-id", qint_from_int(info->connection_id));
qdict_put(dict, "channel-type", qint_from_int(info->type));
qdict_put(dict, "channel-id", qint_from_int(info->id));
qdict_put(dict, "tls", qbool_from_int(tls));
}
static void channel_event(int event, SpiceChannelEventInfo *info)
{
static const int qevent[] = {
[ SPICE_CHANNEL_EVENT_CONNECTED ] = QEVENT_SPICE_CONNECTED,
[ SPICE_CHANNEL_EVENT_INITIALIZED ] = QEVENT_SPICE_INITIALIZED,
[ SPICE_CHANNEL_EVENT_DISCONNECTED ] = QEVENT_SPICE_DISCONNECTED,
};
QDict *server, *client;
QObject *data;
/*
* Spice server might have called us from spice worker thread
* context (happens on display channel disconnects). Spice should
* not do that. It isn't that easy to fix it in spice and even
* when it is fixed we still should cover the already released
* spice versions. So detect that we've been called from another
* thread and grab the iothread lock if so before calling qemu
* functions.
*/
bool need_lock = !qemu_thread_is_self(&me);
if (need_lock) {
qemu_mutex_lock_iothread();
}
client = qdict_new();
server = qdict_new();
if (info->flags & SPICE_CHANNEL_EVENT_FLAG_ADDR_EXT) {
add_addr_info(client, (struct sockaddr *)&info->paddr_ext,
info->plen_ext);
add_addr_info(server, (struct sockaddr *)&info->laddr_ext,
info->llen_ext);
} else {
error_report("spice: %s, extended address is expected",
__func__);
}
if (event == SPICE_CHANNEL_EVENT_INITIALIZED) {
qdict_put(server, "auth", qstring_from_str(auth));
add_channel_info(client, info);
channel_list_add(info);
}
if (event == SPICE_CHANNEL_EVENT_DISCONNECTED) {
channel_list_del(info);
}
data = qobject_from_jsonf("{ 'client': %p, 'server': %p }",
QOBJECT(client), QOBJECT(server));
monitor_protocol_event(qevent[event], data);
qobject_decref(data);
if (need_lock) {
qemu_mutex_unlock_iothread();
}
}
static SpiceCoreInterface core_interface = {
.base.type = SPICE_INTERFACE_CORE,
.base.description = "qemu core services",
.base.major_version = SPICE_INTERFACE_CORE_MAJOR,
.base.minor_version = SPICE_INTERFACE_CORE_MINOR,
.timer_add = timer_add,
.timer_start = timer_start,
.timer_cancel = timer_cancel,
.timer_remove = timer_remove,
.watch_add = watch_add,
.watch_update_mask = watch_update_mask,
.watch_remove = watch_remove,
.channel_event = channel_event,
};
typedef struct SpiceMigration {
SpiceMigrateInstance sin;
struct {
MonitorCompletion *cb;
void *opaque;
} connect_complete;
} SpiceMigration;
static void migrate_connect_complete_cb(SpiceMigrateInstance *sin);
static void migrate_end_complete_cb(SpiceMigrateInstance *sin);
static const SpiceMigrateInterface migrate_interface = {
.base.type = SPICE_INTERFACE_MIGRATION,
.base.description = "migration",
.base.major_version = SPICE_INTERFACE_MIGRATION_MAJOR,
.base.minor_version = SPICE_INTERFACE_MIGRATION_MINOR,
.migrate_connect_complete = migrate_connect_complete_cb,
.migrate_end_complete = migrate_end_complete_cb,
};
static SpiceMigration spice_migrate;
static void migrate_connect_complete_cb(SpiceMigrateInstance *sin)
{
SpiceMigration *sm = container_of(sin, SpiceMigration, sin);
if (sm->connect_complete.cb) {
sm->connect_complete.cb(sm->connect_complete.opaque, NULL);
}
sm->connect_complete.cb = NULL;
}
static void migrate_end_complete_cb(SpiceMigrateInstance *sin)
{
monitor_protocol_event(QEVENT_SPICE_MIGRATE_COMPLETED, NULL);
spice_migration_completed = true;
}
/* config string parsing */
static int name2enum(const char *string, const char *table[], int entries)
{
int i;
if (string) {
for (i = 0; i < entries; i++) {
if (!table[i]) {
continue;
}
if (strcmp(string, table[i]) != 0) {
continue;
}
return i;
}
}
return -1;
}
static int parse_name(const char *string, const char *optname,
const char *table[], int entries)
{
int value = name2enum(string, table, entries);
if (value != -1) {
return value;
}
error_report("spice: invalid %s: %s", optname, string);
exit(1);
}
static const char *stream_video_names[] = {
[ SPICE_STREAM_VIDEO_OFF ] = "off",
[ SPICE_STREAM_VIDEO_ALL ] = "all",
[ SPICE_STREAM_VIDEO_FILTER ] = "filter",
};
#define parse_stream_video(_name) \
parse_name(_name, "stream video control", \
stream_video_names, ARRAY_SIZE(stream_video_names))
static const char *compression_names[] = {
[ SPICE_IMAGE_COMPRESS_OFF ] = "off",
[ SPICE_IMAGE_COMPRESS_AUTO_GLZ ] = "auto_glz",
[ SPICE_IMAGE_COMPRESS_AUTO_LZ ] = "auto_lz",
[ SPICE_IMAGE_COMPRESS_QUIC ] = "quic",
[ SPICE_IMAGE_COMPRESS_GLZ ] = "glz",
[ SPICE_IMAGE_COMPRESS_LZ ] = "lz",
};
#define parse_compression(_name) \
parse_name(_name, "image compression", \
compression_names, ARRAY_SIZE(compression_names))
static const char *wan_compression_names[] = {
[ SPICE_WAN_COMPRESSION_AUTO ] = "auto",
[ SPICE_WAN_COMPRESSION_NEVER ] = "never",
[ SPICE_WAN_COMPRESSION_ALWAYS ] = "always",
};
#define parse_wan_compression(_name) \
parse_name(_name, "wan compression", \
wan_compression_names, ARRAY_SIZE(wan_compression_names))
/* functions for the rest of qemu */
static SpiceChannelList *qmp_query_spice_channels(void)
{
SpiceChannelList *cur_item = NULL, *head = NULL;
ChannelList *item;
QTAILQ_FOREACH(item, &channel_list, link) {
SpiceChannelList *chan;
char host[NI_MAXHOST], port[NI_MAXSERV];
struct sockaddr *paddr;
socklen_t plen;
chan = g_malloc0(sizeof(*chan));
chan->value = g_malloc0(sizeof(*chan->value));
if (item->info->flags & SPICE_CHANNEL_EVENT_FLAG_ADDR_EXT) {
paddr = (struct sockaddr *)&item->info->paddr_ext;
plen = item->info->plen_ext;
} else {
paddr = &item->info->paddr;
plen = item->info->plen;
}
getnameinfo(paddr, plen,
host, sizeof(host), port, sizeof(port),
NI_NUMERICHOST | NI_NUMERICSERV);
chan->value->host = g_strdup(host);
chan->value->port = g_strdup(port);
chan->value->family = g_strdup(inet_strfamily(paddr->sa_family));
chan->value->connection_id = item->info->connection_id;
chan->value->channel_type = item->info->type;
chan->value->channel_id = item->info->id;
chan->value->tls = item->info->flags & SPICE_CHANNEL_EVENT_FLAG_TLS;
/* XXX: waiting for the qapi to support GSList */
if (!cur_item) {
head = cur_item = chan;
} else {
cur_item->next = chan;
cur_item = chan;
}
}
return head;
}
SpiceInfo *qmp_query_spice(Error **errp)
{
QemuOpts *opts = QTAILQ_FIRST(&qemu_spice_opts.head);
int port, tls_port;
const char *addr;
SpiceInfo *info;
char version_string[20]; /* 12 = |255.255.255\0| is the max */
info = g_malloc0(sizeof(*info));
if (!spice_server || !opts) {
info->enabled = false;
return info;
}
info->enabled = true;
info->migrated = spice_migration_completed;
addr = qemu_opt_get(opts, "addr");
port = qemu_opt_get_number(opts, "port", 0);
tls_port = qemu_opt_get_number(opts, "tls-port", 0);
info->has_auth = true;
info->auth = g_strdup(auth);
info->has_host = true;
info->host = g_strdup(addr ? addr : "0.0.0.0");
info->has_compiled_version = true;
snprintf(version_string, sizeof(version_string), "%d.%d.%d",
(SPICE_SERVER_VERSION & 0xff0000) >> 16,
(SPICE_SERVER_VERSION & 0xff00) >> 8,
SPICE_SERVER_VERSION & 0xff);
info->compiled_version = g_strdup(version_string);
if (port) {
info->has_port = true;
info->port = port;
}
if (tls_port) {
info->has_tls_port = true;
info->tls_port = tls_port;
}
info->mouse_mode = spice_server_is_server_mouse(spice_server) ?
SPICE_QUERY_MOUSE_MODE_SERVER :
SPICE_QUERY_MOUSE_MODE_CLIENT;
/* for compatibility with the original command */
info->has_channels = true;
info->channels = qmp_query_spice_channels();
return info;
}
static void migration_state_notifier(Notifier *notifier, void *data)
{
MigrationState *s = data;
if (migration_is_active(s)) {
spice_server_migrate_start(spice_server);
} else if (migration_has_finished(s)) {
spice_server_migrate_end(spice_server, true);
} else if (migration_has_failed(s)) {
spice_server_migrate_end(spice_server, false);
}
}
int qemu_spice_migrate_info(const char *hostname, int port, int tls_port,
const char *subject,
MonitorCompletion *cb, void *opaque)
{
int ret;
spice_migrate.connect_complete.cb = cb;
spice_migrate.connect_complete.opaque = opaque;
ret = spice_server_migrate_connect(spice_server, hostname,
port, tls_port, subject);
return ret;
}
static int add_channel(const char *name, const char *value, void *opaque)
{
int security = 0;
int rc;
if (strcmp(name, "tls-channel") == 0) {
int *tls_port = opaque;
if (!*tls_port) {
error_report("spice: tried to setup tls-channel"
" without specifying a TLS port");
exit(1);
}
security = SPICE_CHANNEL_SECURITY_SSL;
}
if (strcmp(name, "plaintext-channel") == 0) {
security = SPICE_CHANNEL_SECURITY_NONE;
}
if (security == 0) {
return 0;
}
if (strcmp(value, "default") == 0) {
rc = spice_server_set_channel_security(spice_server, NULL, security);
} else {
rc = spice_server_set_channel_security(spice_server, value, security);
}
if (rc != 0) {
error_report("spice: failed to set channel security for %s", value);
exit(1);
}
return 0;
}
static void vm_change_state_handler(void *opaque, int running,
RunState state)
{
if (running) {
qemu_spice_display_start();
spice_server_vm_start(spice_server);
} else {
spice_server_vm_stop(spice_server);
qemu_spice_display_stop();
}
}
void qemu_spice_init(void)
{
QemuOpts *opts = QTAILQ_FIRST(&qemu_spice_opts.head);
const char *password, *str, *x509_dir, *addr,
*x509_key_password = NULL,
*x509_dh_file = NULL,
*tls_ciphers = NULL;
char *x509_key_file = NULL,
*x509_cert_file = NULL,
*x509_cacert_file = NULL;
int port, tls_port, len, addr_flags;
spice_image_compression_t compression;
spice_wan_compression_t wan_compr;
bool seamless_migration;
qemu_thread_get_self(&me);
if (!opts) {
return;
}
port = qemu_opt_get_number(opts, "port", 0);
tls_port = qemu_opt_get_number(opts, "tls-port", 0);
if (!port && !tls_port) {
error_report("neither port nor tls-port specified for spice");
exit(1);
}
if (port < 0 || port > 65535) {
error_report("spice port is out of range");
exit(1);
}
if (tls_port < 0 || tls_port > 65535) {
error_report("spice tls-port is out of range");
exit(1);
}
password = qemu_opt_get(opts, "password");
if (tls_port) {
x509_dir = qemu_opt_get(opts, "x509-dir");
if (NULL == x509_dir) {
x509_dir = ".";
}
len = strlen(x509_dir) + 32;
str = qemu_opt_get(opts, "x509-key-file");
if (str) {
x509_key_file = g_strdup(str);
} else {
x509_key_file = g_malloc(len);
snprintf(x509_key_file, len, "%s/%s", x509_dir, X509_SERVER_KEY_FILE);
}
str = qemu_opt_get(opts, "x509-cert-file");
if (str) {
x509_cert_file = g_strdup(str);
} else {
x509_cert_file = g_malloc(len);
snprintf(x509_cert_file, len, "%s/%s", x509_dir, X509_SERVER_CERT_FILE);
}
str = qemu_opt_get(opts, "x509-cacert-file");
if (str) {
x509_cacert_file = g_strdup(str);
} else {
x509_cacert_file = g_malloc(len);
snprintf(x509_cacert_file, len, "%s/%s", x509_dir, X509_CA_CERT_FILE);
}
x509_key_password = qemu_opt_get(opts, "x509-key-password");
x509_dh_file = qemu_opt_get(opts, "x509-dh-file");
tls_ciphers = qemu_opt_get(opts, "tls-ciphers");
}
addr = qemu_opt_get(opts, "addr");
addr_flags = 0;
if (qemu_opt_get_bool(opts, "ipv4", 0)) {
addr_flags |= SPICE_ADDR_FLAG_IPV4_ONLY;
} else if (qemu_opt_get_bool(opts, "ipv6", 0)) {
addr_flags |= SPICE_ADDR_FLAG_IPV6_ONLY;
}
spice_server = spice_server_new();
spice_server_set_addr(spice_server, addr ? addr : "", addr_flags);
if (port) {
spice_server_set_port(spice_server, port);
}
if (tls_port) {
spice_server_set_tls(spice_server, tls_port,
x509_cacert_file,
x509_cert_file,
x509_key_file,
x509_key_password,
x509_dh_file,
tls_ciphers);
}
if (password) {
spice_server_set_ticket(spice_server, password, 0, 0, 0);
}
if (qemu_opt_get_bool(opts, "sasl", 0)) {
if (spice_server_set_sasl_appname(spice_server, "qemu") == -1 ||
spice_server_set_sasl(spice_server, 1) == -1) {
error_report("spice: failed to enable sasl");
exit(1);
}
}
if (qemu_opt_get_bool(opts, "disable-ticketing", 0)) {
auth = "none";
spice_server_set_noauth(spice_server);
}
if (qemu_opt_get_bool(opts, "disable-copy-paste", 0)) {
spice_server_set_agent_copypaste(spice_server, false);
}
compression = SPICE_IMAGE_COMPRESS_AUTO_GLZ;
str = qemu_opt_get(opts, "image-compression");
if (str) {
compression = parse_compression(str);
}
spice_server_set_image_compression(spice_server, compression);
wan_compr = SPICE_WAN_COMPRESSION_AUTO;
str = qemu_opt_get(opts, "jpeg-wan-compression");
if (str) {
wan_compr = parse_wan_compression(str);
}
spice_server_set_jpeg_compression(spice_server, wan_compr);
wan_compr = SPICE_WAN_COMPRESSION_AUTO;
str = qemu_opt_get(opts, "zlib-glz-wan-compression");
if (str) {
wan_compr = parse_wan_compression(str);
}
spice_server_set_zlib_glz_compression(spice_server, wan_compr);
str = qemu_opt_get(opts, "streaming-video");
if (str) {
int streaming_video = parse_stream_video(str);
spice_server_set_streaming_video(spice_server, streaming_video);
}
spice_server_set_agent_mouse
(spice_server, qemu_opt_get_bool(opts, "agent-mouse", 1));
spice_server_set_playback_compression
(spice_server, qemu_opt_get_bool(opts, "playback-compression", 1));
qemu_opt_foreach(opts, add_channel, &tls_port, 0);
spice_server_set_name(spice_server, qemu_name);
spice_server_set_uuid(spice_server, qemu_uuid);
seamless_migration = qemu_opt_get_bool(opts, "seamless-migration", 0);
spice_server_set_seamless_migration(spice_server, seamless_migration);
if (0 != spice_server_init(spice_server, &core_interface)) {
error_report("failed to initialize spice server");
exit(1);
};
using_spice = 1;
migration_state.notify = migration_state_notifier;
add_migration_state_change_notifier(&migration_state);
spice_migrate.sin.base.sif = &migrate_interface.base;
spice_migrate.connect_complete.cb = NULL;
qemu_spice_add_interface(&spice_migrate.sin.base);
qemu_spice_input_init();
qemu_spice_audio_init();
qemu_add_vm_change_state_handler(vm_change_state_handler, &spice_server);
g_free(x509_key_file);
g_free(x509_cert_file);
g_free(x509_cacert_file);
}
int qemu_spice_add_interface(SpiceBaseInstance *sin)
{
if (!spice_server) {
if (QTAILQ_FIRST(&qemu_spice_opts.head) != NULL) {
error_report("Oops: spice configured but not active");
exit(1);
}
/*
* Create a spice server instance.
* It does *not* listen on the network.
* It handles QXL local rendering only.
*
* With a command line like '-vnc :0 -vga qxl' you'll end up here.
*/
spice_server = spice_server_new();
spice_server_init(spice_server, &core_interface);
}
return spice_server_add_interface(spice_server, sin);
}
static int qemu_spice_set_ticket(bool fail_if_conn, bool disconnect_if_conn)
{
time_t lifetime, now = time(NULL);
char *passwd;
if (now < auth_expires) {
passwd = auth_passwd;
lifetime = (auth_expires - now);
if (lifetime > INT_MAX) {
lifetime = INT_MAX;
}
} else {
passwd = NULL;
lifetime = 1;
}
return spice_server_set_ticket(spice_server, passwd, lifetime,
fail_if_conn, disconnect_if_conn);
}
int qemu_spice_set_passwd(const char *passwd,
bool fail_if_conn, bool disconnect_if_conn)
{
free(auth_passwd);
auth_passwd = strdup(passwd);
return qemu_spice_set_ticket(fail_if_conn, disconnect_if_conn);
}
int qemu_spice_set_pw_expire(time_t expires)
{
auth_expires = expires;
return qemu_spice_set_ticket(false, false);
}
int qemu_spice_display_add_client(int csock, int skipauth, int tls)
{
if (tls) {
return spice_server_add_ssl_client(spice_server, csock, skipauth);
} else {
return spice_server_add_client(spice_server, csock, skipauth);
}
}
static void spice_register_config(void)
{
qemu_add_opts(&qemu_spice_opts);
}
machine_init(spice_register_config);
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