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qapi: Convert query-vnc

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There are three important remarks in relation to the non-qapi command:

 1. This commit also fixes the behavior of the 'query-vnc' and 'info vnc'
    commands to return an error when qemu is built without VNC support
    (ie. --disable-vnc). The non-qapi command would return the OK
    response in QMP and no response in HMP

 2. The qapi version explicitly marks the fields 'host', 'family',
    'service' and 'auth' as optional. Their are not documented as optional
    in the non-qapi command doc, but they would not be returned if
    vnc support is disabled. The qapi version maintains the same
    semantics, but documents those fields correctly

 3. The 'clients' field, which is a list, is marked as optional but is
    always returned. If there are no clients connected an empty list
    is returned. This is not the Right Way to this in the qapi but it's
    how the non-qapi command used to work

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Luiz Capitulino 2011-10-17 16:41:22 -02:00
parent bf82632841
commit 2b54aa879e
8 changed files with 229 additions and 72 deletions
Download patch file Download diff file Expand all files Collapse all files

137
ui/vnc.c
View file

@ -31,6 +31,7 @@
#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
@ -274,80 +275,110 @@ static void vnc_qmp_event(VncState *vs, MonitorEvent event)
qobject_decref(data);
}
static void info_vnc_iter(QObject *obj, void *opaque)
static VncClientInfo *qmp_query_vnc_client(const VncState *client)
{
QDict *client;
Monitor *mon = opaque;
struct sockaddr_storage sa;
socklen_t salen = sizeof(sa);
char host[NI_MAXHOST];
char serv[NI_MAXSERV];
VncClientInfo *info;
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"));
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
monitor_printf(mon, " x509_dname: %s\n",
qdict_haskey(client, "x509_dname") ?
qdict_get_str(client, "x509_dname") : "none");
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
monitor_printf(mon, " username: %s\n",
qdict_haskey(client, "sasl_username") ?
qdict_get_str(client, "sasl_username") : "none");
if (client->sasl.conn && client->sasl.username) {
info->has_sasl_username = true;
info->sasl_username = g_strdup(client->sasl.username);
}
#endif
return info;
}
void do_info_vnc_print(Monitor *mon, const QObject *data)
VncInfo *qmp_query_vnc(Error **errp)
{
QDict *server;
QList *clients;
VncInfo *info = g_malloc0(sizeof(*info));
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 }");
info->enabled = false;
} else {
QList *clist;
VncClientInfoList *cur_item = NULL;
struct sockaddr_storage sa;
socklen_t salen = sizeof(sa);
char host[NI_MAXHOST];
char serv[NI_MAXSERV];
VncState *client;
clist = qlist_new();
info->enabled = true;
/* for compatibility with the original command */
info->has_clients = true;
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);
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;
}
}
*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;
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