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Introduce generic RPC module for advertising via MDNS

Browse Source 
Allow RPC servers to advertise themselves using MDNS,
via Avahi

* src/rpc/virnetserver.c, src/rpc/virnetserver.h: Allow
  registration of MDNS services via avahi
* src/rpc/virnetserverservice.c, src/rpc/virnetserverservice.h: Add
  API to fetch the listen port number
* src/rpc/virnetsocket.c, src/rpc/virnetsocket.h: Add API to
  fetch the local port number
* src/rpc/virnetservermdns.c, src/rpc/virnetservermdns.h: Represent
  an MDNS advertisement
This commit is contained in:
Daniel P. Berrange 2011-03-02 17:11:42 +00:00
parent 4e00b1da8a
commit e23ec81db6
11 changed files with 804 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
cfg.mk
View File

@ -128,6 +128,9 @@ useless_free_options = \
--name=virNetMessageFree \
--name=virNetServerFree \
--name=virNetServerClientFree \
--name=virNetServerMDNSFree \
--name=virNetServerMDNSEntryFree \
--name=virNetServerMDNSGroupFree \
--name=virNetServerProgramFree \
--name=virNetServerServiceFree \
--name=virNetSocketFree \

1
po/POTFILES.in
View File

@ -74,6 +74,7 @@ src/rpc/virnetsaslcontext.c
src/rpc/virnetsocket.c
src/rpc/virnetserver.c
src/rpc/virnetserverclient.c
src/rpc/virnetservermdns.c
src/rpc/virnetserverprogram.c
src/rpc/virnettlscontext.c
src/secret/secret_driver.c

9
src/Makefile.am
View File

@ -1220,10 +1220,19 @@ libvirt_net_rpc_server_la_SOURCES = \
rpc/virnetserverservice.h rpc/virnetserverservice.c \
rpc/virnetserverclient.h rpc/virnetserverclient.c \
rpc/virnetserver.h rpc/virnetserver.c
if HAVE_AVAHI
libvirt_net_rpc_server_la_SOURCES += \
rpc/virnetservermdns.h rpc/virnetservermdns.c
else
EXTRA_DIST += \
rpc/virnetservermdns.h rpc/virnetservermdns.c
endif
libvirt_net_rpc_server_la_CFLAGS = \
$(AVAHI_CFLAGS) \
$(AM_CFLAGS)
libvirt_net_rpc_server_la_LDFLAGS = \
$(AM_LDFLAGS) \
$(AVAHI_LIBS) \
$(CYGWIN_EXTRA_LDFLAGS) \
$(MINGW_EXTRA_LDFLAGS)
libvirt_net_rpc_server_la_LIBADD = \

48
src/rpc/virnetserver.c
View File

@ -36,6 +36,9 @@
#include "util.h"
#include "files.h"
#include "event.h"
#if HAVE_AVAHI
# include "virnetservermdns.h"
#endif
#define VIR_FROM_THIS VIR_FROM_RPC
#define virNetError(code, ...) \
@ -75,6 +78,12 @@ struct _virNetServer {
int sigwrite;
int sigwatch;
char *mdnsGroupName;
#if HAVE_AVAHI
virNetServerMDNSPtr mdns;
virNetServerMDNSGroupPtr mdnsGroup;
#endif
size_t nservices;
virNetServerServicePtr *services;
@ -260,6 +269,7 @@ static void virNetServerFatalSignal(int sig, siginfo_t *siginfo ATTRIBUTE_UNUSED
virNetServerPtr virNetServerNew(size_t min_workers,
size_t max_workers,
size_t max_clients,
const char *mdnsGroupName,
virNetServerClientInitHook clientInitHook)
{
virNetServerPtr srv;
@ -282,6 +292,20 @@ virNetServerPtr virNetServerNew(size_t min_workers,
srv->clientInitHook = clientInitHook;
srv->privileged = geteuid() == 0 ? true : false;
if (mdnsGroupName &&
!(srv->mdnsGroupName = strdup(mdnsGroupName))) {
virReportOOMError();
goto error;
}
#if HAVE_AVAHI
if (srv->mdnsGroupName) {
if (!(srv->mdns = virNetServerMDNSNew()))
goto error;
if (!(srv->mdnsGroup = virNetServerMDNSAddGroup(srv->mdns, mdnsGroupName)))
goto error;
}
#endif
if (virMutexInit(&srv->lock) < 0) {
virNetError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot initialize mutex"));
@ -494,13 +518,26 @@ error:
int virNetServerAddService(virNetServerPtr srv,
virNetServerServicePtr svc)
virNetServerServicePtr svc,
const char *mdnsEntryName ATTRIBUTE_UNUSED)
{
virNetServerLock(srv);
if (VIR_EXPAND_N(srv->services, srv->nservices, 1) < 0)
goto no_memory;
#if HAVE_AVAHI
if (mdnsEntryName) {
int port = virNetServerServiceGetPort(svc);
virNetServerMDNSEntryPtr entry;
if (!(entry = virNetServerMDNSAddEntry(srv->mdnsGroup,
mdnsEntryName,
port)))
goto error;
}
#endif
srv->services[srv->nservices-1] = svc;
virNetServerServiceRef(svc);
@ -513,6 +550,9 @@ int virNetServerAddService(virNetServerPtr srv,
no_memory:
virReportOOMError();
#if HAVE_AVAHI
error:
#endif
virNetServerUnlock(srv);
return -1;
}
@ -582,6 +622,12 @@ void virNetServerRun(virNetServerPtr srv)
virNetServerLock(srv);
#if HAVE_AVAHI
if (srv->mdns &&
virNetServerMDNSStart(srv->mdns) < 0)
goto cleanup;
#endif
if (srv->autoShutdownTimeout &&
(timerid = virEventAddTimeout(-1,
virNetServerAutoShutdownTimer,

4
src/rpc/virnetserver.h
View File

@ -37,6 +37,7 @@ typedef int (*virNetServerClientInitHook)(virNetServerPtr srv,
virNetServerPtr virNetServerNew(size_t min_workers,
size_t max_workers,
size_t max_clients,
const char *mdnsGroupName,
virNetServerClientInitHook clientInitHook);
typedef int (*virNetServerAutoShutdownFunc)(virNetServerPtr srv, void *opaque);
@ -58,7 +59,8 @@ int virNetServerAddSignalHandler(virNetServerPtr srv,
void *opaque);
int virNetServerAddService(virNetServerPtr srv,
virNetServerServicePtr svc);
virNetServerServicePtr svc,
const char *mdnsEntryName);
int virNetServerAddProgram(virNetServerPtr srv,
virNetServerProgramPtr prog);

614
src/rpc/virnetservermdns.c Normal file
View File

@ -0,0 +1,614 @@
/*
* virnetservermdns.c: advertise server sockets
*
* Copyright (C) 2011 Red Hat, Inc.
* Copyright (C) 2007 Daniel P. Berrange
*
* Derived from Avahi example service provider code.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <avahi-client/client.h>
#include <avahi-client/publish.h>
#include <avahi-common/alternative.h>
#include <avahi-common/simple-watch.h>
#include <avahi-common/malloc.h>
#include <avahi-common/error.h>
#include <avahi-common/timeval.h>
#include "virnetservermdns.h"
#include "event.h"
#include "event_poll.h"
#include "memory.h"
#include "virterror_internal.h"
#include "logging.h"
#define VIR_FROM_THIS VIR_FROM_RPC
#define virNetError(code, ...) \
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
struct _virNetServerMDNSEntry {
char *type;
int port;
virNetServerMDNSEntryPtr next;
};
struct _virNetServerMDNSGroup {
virNetServerMDNSPtr mdns;
AvahiEntryGroup *handle;
char *name;
virNetServerMDNSEntryPtr entry;
virNetServerMDNSGroupPtr next;
};
struct _virNetServerMDNS {
AvahiClient *client;
AvahiPoll *poller;
virNetServerMDNSGroupPtr group;
};
/* Avahi API requires this struct name in the app :-( */
struct AvahiWatch {
int watch;
int fd;
int revents;
AvahiWatchCallback callback;
void *userdata;
};
/* Avahi API requires this struct name in the app :-( */
struct AvahiTimeout {
int timer;
AvahiTimeoutCallback callback;
void *userdata;
};
static void virNetServerMDNSCreateServices(virNetServerMDNSGroupPtr group);
/* Called whenever the entry group state changes */
static void virNetServerMDNSGroupCallback(AvahiEntryGroup *g ATTRIBUTE_UNUSED,
AvahiEntryGroupState state,
void *data)
{
virNetServerMDNSGroupPtr group = data;
switch (state) {
case AVAHI_ENTRY_GROUP_ESTABLISHED:
/* The entry group has been established successfully */
VIR_DEBUG("Group '%s' established", group->name);
break;
case AVAHI_ENTRY_GROUP_COLLISION:
{
char *n;
/* A service name collision happened. Let's pick a new name */
n = avahi_alternative_service_name(group->name);
VIR_FREE(group->name);
group->name = n;
VIR_DEBUG("Group name collision, renaming service to '%s'", group->name);
/* And recreate the services */
virNetServerMDNSCreateServices(group);
}
break;
case AVAHI_ENTRY_GROUP_FAILURE :
VIR_DEBUG("Group failure: %s",
avahi_strerror(avahi_client_errno(group->mdns->client)));
/* Some kind of failure happened while we were registering our services */
//avahi_simple_poll_quit(simple_poll);
break;
case AVAHI_ENTRY_GROUP_UNCOMMITED:
case AVAHI_ENTRY_GROUP_REGISTERING:
;
}
}
static void virNetServerMDNSCreateServices(virNetServerMDNSGroupPtr group)
{
virNetServerMDNSPtr mdns = group->mdns;
virNetServerMDNSEntryPtr entry;
int ret;
VIR_DEBUG("Adding services to '%s'", group->name);
/* If we've no services to advertise, just reset the group to make
* sure it is emptied of any previously advertised services */
if (!group->entry) {
if (group->handle)
avahi_entry_group_reset(group->handle);
return;
}
/* If this is the first time we're called, let's create a new entry group */
if (!group->handle) {
VIR_DEBUG("Creating initial group %s", group->name);
if (!(group->handle =
avahi_entry_group_new(mdns->client,
virNetServerMDNSGroupCallback,
group))) {
VIR_DEBUG("avahi_entry_group_new() failed: %s",
avahi_strerror(avahi_client_errno(mdns->client)));
return;
}
}
entry = group->entry;
while (entry) {
if ((ret = avahi_entry_group_add_service(group->handle,
AVAHI_IF_UNSPEC,
AVAHI_PROTO_UNSPEC,
0,
group->name,
entry->type,
NULL,
NULL,
entry->port,
NULL)) < 0) {
VIR_DEBUG("Failed to add %s service on port %d: %s",
entry->type, entry->port, avahi_strerror(ret));
avahi_entry_group_reset(group->handle);
return;
}
entry = entry->next;
}
/* Tell the server to register the service */
if ((ret = avahi_entry_group_commit(group->handle)) < 0) {
avahi_entry_group_reset(group->handle);
VIR_DEBUG("Failed to commit entry_group: %s",
avahi_strerror(ret));
return;
}
}
static void virNetServerMDNSClientCallback(AvahiClient *c,
AvahiClientState state,
void *data)
{
virNetServerMDNSPtr mdns = data;
virNetServerMDNSGroupPtr group;
if (!mdns->client)
mdns->client = c;
VIR_DEBUG("Callback state=%d", state);
/* Called whenever the client or server state changes */
switch (state) {
case AVAHI_CLIENT_S_RUNNING:
/* The server has startup successfully and registered its host
* name on the network, so it's time to create our services */
VIR_DEBUG("Client running %p", mdns->client);
group = mdns->group;
while (group) {
virNetServerMDNSCreateServices(group);
group = group->next;
}
break;
case AVAHI_CLIENT_FAILURE:
VIR_DEBUG("Client failure: %s",
avahi_strerror(avahi_client_errno(c)));
virNetServerMDNSStop(mdns);
virNetServerMDNSStart(mdns);
break;
case AVAHI_CLIENT_S_COLLISION:
/* Let's drop our registered services. When the server is back
* in AVAHI_SERVER_RUNNING state we will register them
* again with the new host name. */
/* Fallthrough */
case AVAHI_CLIENT_S_REGISTERING:
/* The server records are now being established. This
* might be caused by a host name change. We need to wait
* for our own records to register until the host name is
* properly established. */
VIR_DEBUG("Client collision/connecting %p", mdns->client);
group = mdns->group;
while (group) {
if (group->handle)
avahi_entry_group_reset(group->handle);
group = group->next;
}
break;
case AVAHI_CLIENT_CONNECTING:
VIR_DEBUG("Client connecting.... %p", mdns->client);
;
}
}
static void virNetServerMDNSWatchDispatch(int watch, int fd, int events, void *opaque)
{
AvahiWatch *w = opaque;
int fd_events = virEventPollToNativeEvents(events);
VIR_DEBUG("Dispatch watch %d FD %d Event %d", watch, fd, fd_events);
w->revents = fd_events;
w->callback(w, fd, fd_events, w->userdata);
}
static void virNetServerMDNSWatchDofree(void *w)
{
VIR_FREE(w);
}
static AvahiWatch *virNetServerMDNSWatchNew(const AvahiPoll *api ATTRIBUTE_UNUSED,
int fd, AvahiWatchEvent event,
AvahiWatchCallback cb, void *userdata)
{
AvahiWatch *w;
virEventHandleType hEvents;
if (VIR_ALLOC(w) < 0) {
virReportOOMError();
return NULL;
}
w->fd = fd;
w->revents = 0;
w->callback = cb;
w->userdata = userdata;
VIR_DEBUG("New handle %p FD %d Event %d", w, w->fd, event);
hEvents = virEventPollFromNativeEvents(event);
if ((w->watch = virEventAddHandle(fd, hEvents,
virNetServerMDNSWatchDispatch,
w,
virNetServerMDNSWatchDofree)) < 0) {
virNetError(VIR_ERR_INTERNAL_ERROR,
_("Failed to add watch for fd %d events %d"), fd, hEvents);
VIR_FREE(w);
return NULL;
}
return w;
}
static void virNetServerMDNSWatchUpdate(AvahiWatch *w, AvahiWatchEvent event)
{
VIR_DEBUG("Update handle %p FD %d Event %d", w, w->fd, event);
virEventUpdateHandle(w->watch, event);
}
static AvahiWatchEvent virNetServerMDNSWatchGetEvents(AvahiWatch *w)
{
VIR_DEBUG("Get handle events %p %d", w, w->fd);
return w->revents;
}
static void virNetServerMDNSWatchFree(AvahiWatch *w)
{
VIR_DEBUG("Free handle %p %d", w, w->fd);
virEventRemoveHandle(w->watch);
}
static void virNetServerMDNSTimeoutDispatch(int timer ATTRIBUTE_UNUSED, void *opaque)
{
AvahiTimeout *t = (AvahiTimeout*)opaque;
VIR_DEBUG("Dispatch timeout %p %d", t, timer);
virEventUpdateTimeout(t->timer, -1);
t->callback(t, t->userdata);
}
static void virNetServerMDNSTimeoutDofree(void *t)
{
VIR_FREE(t);
}
static AvahiTimeout *virNetServerMDNSTimeoutNew(const AvahiPoll *api ATTRIBUTE_UNUSED,
const struct timeval *tv,
AvahiTimeoutCallback cb,
void *userdata)
{
AvahiTimeout *t;
struct timeval now;
long long nowms, thenms, timeout;
VIR_DEBUG("Add timeout TV %p", tv);
if (VIR_ALLOC(t) < 0) {
virReportOOMError();
return NULL;
}
if (gettimeofday(&now, NULL) < 0) {
virReportSystemError(errno, "%s",
_("Unable to get current time"));
VIR_FREE(t);
return NULL;
}
VIR_DEBUG("Trigger timed for %d %d %d %d",
(int)now.tv_sec, (int)now.tv_usec,
(int)(tv ? tv->tv_sec : 0), (int)(tv ? tv->tv_usec : 0));
nowms = (now.tv_sec * 1000ll) + (now.tv_usec / 1000ll);
if (tv) {
thenms = (tv->tv_sec * 1000ll) + (tv->tv_usec/1000ll);
timeout = thenms > nowms ? nowms - thenms : 0;
if (timeout < 0)
timeout = 0;
} else {
timeout = -1;
}
t->timer = virEventAddTimeout(timeout,
virNetServerMDNSTimeoutDispatch,
t,
virNetServerMDNSTimeoutDofree);
t->callback = cb;
t->userdata = userdata;
if (t->timer < 0) {
virNetError(VIR_ERR_INTERNAL_ERROR,
_("Failed to add timer with timeout %d"), (int)timeout);
VIR_FREE(t);
return NULL;
}
return t;
}
static void virNetServerMDNSTimeoutUpdate(AvahiTimeout *t, const struct timeval *tv)
{
struct timeval now;
long long nowms, thenms, timeout;
VIR_DEBUG("Update timeout %p TV %p", t, tv);
if (gettimeofday(&now, NULL) < 0) {
VIR_FREE(t);
return;
}
nowms = (now.tv_sec * 1000ll) + (now.tv_usec / 1000ll);
if (tv) {
thenms = ((tv->tv_sec * 1000ll) + (tv->tv_usec/1000ll));
timeout = thenms > nowms ? nowms - thenms : 0;
if (timeout < 0)
timeout = 0;
} else {
timeout = -1;
}
virEventUpdateTimeout(t->timer, timeout);
}
static void virNetServerMDNSTimeoutFree(AvahiTimeout *t)
{
VIR_DEBUG("Free timeout %p", t);
virEventRemoveTimeout(t->timer);
}
static AvahiPoll *virNetServerMDNSCreatePoll(void)
{
AvahiPoll *p;
if (VIR_ALLOC(p) < 0) {
virReportOOMError();
return NULL;
}
p->userdata = NULL;
p->watch_new = virNetServerMDNSWatchNew;
p->watch_update = virNetServerMDNSWatchUpdate;
p->watch_get_events = virNetServerMDNSWatchGetEvents;
p->watch_free = virNetServerMDNSWatchFree;
p->timeout_new = virNetServerMDNSTimeoutNew;
p->timeout_update = virNetServerMDNSTimeoutUpdate;
p->timeout_free = virNetServerMDNSTimeoutFree;
return p;
}
virNetServerMDNS *virNetServerMDNSNew(void)
{
virNetServerMDNS *mdns;
if (VIR_ALLOC(mdns) < 0)
return NULL;
/* Allocate main loop object */
if (!(mdns->poller = virNetServerMDNSCreatePoll())) {
VIR_FREE(mdns);
return NULL;
}
return mdns;
}
int virNetServerMDNSStart(virNetServerMDNS *mdns)
{
int error;
VIR_DEBUG("Starting client %p", mdns);
mdns->client = avahi_client_new(mdns->poller,
AVAHI_CLIENT_NO_FAIL,
virNetServerMDNSClientCallback,
mdns, &error);
if (!mdns->client) {
virNetError(VIR_ERR_INTERNAL_ERROR,
_("Failed to create mDNS client: %s"),
avahi_strerror(error));
return -1;
}
return 0;
}
virNetServerMDNSGroupPtr virNetServerMDNSAddGroup(virNetServerMDNS *mdns,
const char *name)
{
virNetServerMDNSGroupPtr group;
VIR_DEBUG("Adding group '%s'", name);
if (VIR_ALLOC(group) < 0) {
virReportOOMError();
return NULL;
}
if (!(group->name = strdup(name))) {
VIR_FREE(group);
virReportOOMError();
return NULL;
}
group->mdns = mdns;
group->next = mdns->group;
mdns->group = group;
return group;
}
void virNetServerMDNSRemoveGroup(virNetServerMDNSPtr mdns,
virNetServerMDNSGroupPtr group)
{
virNetServerMDNSGroupPtr tmp = mdns->group, prev = NULL;
while (tmp) {
if (tmp == group) {
VIR_FREE(group->name);
if (prev)
prev->next = group->next;
else
group->mdns->group = group->next;
VIR_FREE(group);
return;
}
prev = tmp;
tmp = tmp->next;
}
}
virNetServerMDNSEntryPtr virNetServerMDNSAddEntry(virNetServerMDNSGroupPtr group,
const char *type,
int port)
{
virNetServerMDNSEntryPtr entry;
VIR_DEBUG("Adding entry %s %d to group %s", type, port, group->name);
if (VIR_ALLOC(entry) < 0) {
virReportOOMError();
return NULL;
}
entry->port = port;
if (!(entry->type = strdup(type))) {
VIR_FREE(entry);
virReportOOMError();
return NULL;
}
entry->next = group->entry;
group->entry = entry;
return entry;
}
void virNetServerMDNSRemoveEntry(virNetServerMDNSGroupPtr group,
virNetServerMDNSEntryPtr entry)
{
virNetServerMDNSEntryPtr tmp = group->entry, prev = NULL;
while (tmp) {
if (tmp == entry) {
VIR_FREE(entry->type);
if (prev)
prev->next = entry->next;
else
group->entry = entry->next;
return;
}
prev = tmp;
tmp = tmp->next;
}
}
void virNetServerMDNSStop(virNetServerMDNSPtr mdns)
{
virNetServerMDNSGroupPtr group = mdns->group;
while (group) {
if (group->handle) {
avahi_entry_group_free(group->handle);
group->handle = NULL;
}
group = group->next;
}
if (mdns->client)
avahi_client_free(mdns->client);
mdns->client = NULL;
}
void virNetServerMDNSFree(virNetServerMDNSPtr mdns)
{
virNetServerMDNSGroupPtr group, tmp;
if (!mdns)
return;
group = mdns->group;
while (group) {
tmp = group->next;
virNetServerMDNSGroupFree(group);
group = tmp;
}
VIR_FREE(mdns);
}
void virNetServerMDNSGroupFree(virNetServerMDNSGroupPtr grp)
{
virNetServerMDNSEntryPtr entry, tmp;
if (!grp)
return;
entry = grp->entry;
while (entry) {
tmp = entry->next;
virNetServerMDNSEntryFree(entry);
entry = tmp;
}
VIR_FREE(grp);
}
void virNetServerMDNSEntryFree(virNetServerMDNSEntryPtr entry)
{
if (!entry)
return;
VIR_FREE(entry);
}

109
src/rpc/virnetservermdns.h Normal file
View File

@ -0,0 +1,109 @@
/*
* virnetservermdns.c: advertise server sockets
*
* Copyright (C) 2011 Red Hat, Inc.
* Copyright (C) 2007 Daniel P. Berrange
*
* Derived from Avahi example service provider code.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef __VIR_NET_SERVER_MDNS_H__
# define __VIR_NET_SERVER_MDNS_H__
# include "internal.h"
typedef struct _virNetServerMDNS virNetServerMDNS;
typedef virNetServerMDNS *virNetServerMDNSPtr;
typedef struct _virNetServerMDNSGroup virNetServerMDNSGroup;
typedef virNetServerMDNSGroup *virNetServerMDNSGroupPtr;
typedef struct _virNetServerMDNSEntry virNetServerMDNSEntry;
typedef virNetServerMDNSEntry *virNetServerMDNSEntryPtr;
/**
* Prepares a new mdns manager object for use
*/
virNetServerMDNSPtr virNetServerMDNSNew(void);
/**
* Starts the mdns client, advertising any groups/entries currently registered
*
* @mdns: manager to start advertising
*
* Starts the mdns client. Services may not be immediately visible, since
* it may asynchronously wait for the mdns service to startup
*
* returns -1 upon failure, 0 upon success.
*/
int virNetServerMDNSStart(virNetServerMDNSPtr mdns);
/**
* Stops the mdns client, removing any advertisements
*
* @mdns: manager to start advertising
*
*/
void virNetServerMDNSStop(virNetServerMDNSPtr mdns);
/**
* Adds a group container for advertisement
*
* @mdns manager to attach the group to
* @name unique human readable service name
*
* returns the group record, or NULL upon failure
*/
virNetServerMDNSGroupPtr virNetServerMDNSAddGroup(virNetServerMDNSPtr mdns,
const char *name);
/**
* Removes a group container from advertisement
*
* @mdns amanger to detach group from
* @group group to remove
*/
void virNetServerMDNSRemoveGroup(virNetServerMDNSPtr mdns,
virNetServerMDNSGroupPtr group);
/**
* Adds a service entry in a group
*
* @group group to attach the entry to
* @type service type string
* @port tcp port number
*
* returns the service record, or NULL upon failure
*/
virNetServerMDNSEntryPtr virNetServerMDNSAddEntry(virNetServerMDNSGroupPtr group,
const char *type, int port);
/**
* Removes a service entry from a group
*
* @group group to detach service entry from
* @entry service entry to remove
*/
void virNetServerMDNSRemoveEntry(virNetServerMDNSGroupPtr group,
virNetServerMDNSEntryPtr entry);
void virNetServerMDNSFree(virNetServerMDNSPtr ptr);
void virNetServerMDNSGroupFree(virNetServerMDNSGroupPtr ptr);
void virNetServerMDNSEntryFree(virNetServerMDNSEntryPtr ptr);
#endif /* __VIR_NET_SERVER_MDNS_H__ */

8
src/rpc/virnetserverservice.c
View File

@ -187,6 +187,14 @@ error:
}
int virNetServerServiceGetPort(virNetServerServicePtr svc)
{
/* We're assuming if there are multiple sockets
* for IPv4 & 6, then they are all on same port */
return virNetSocketGetPort(svc->socks[0]);
}
int virNetServerServiceGetAuth(virNetServerServicePtr svc)
{
return svc->auth;

2
src/rpc/virnetserverservice.h
View File

@ -48,6 +48,8 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
bool readonly,
virNetTLSContextPtr tls);
int virNetServerServiceGetPort(virNetServerServicePtr svc);
int virNetServerServiceGetAuth(virNetServerServicePtr svc);
bool virNetServerServiceIsReadonly(virNetServerServicePtr svc);

6
src/rpc/virnetsocket.c
View File

@ -682,6 +682,12 @@ bool virNetSocketIsLocal(virNetSocketPtr sock)
}
int virNetSocketGetPort(virNetSocketPtr sock)
{
return virSocketGetPort(&sock->localAddr);
}
#ifdef SO_PEERCRED
int virNetSocketGetLocalIdentity(virNetSocketPtr sock,
uid_t *uid,

2
src/rpc/virnetsocket.h
View File

@ -77,6 +77,8 @@ int virNetSocketNewConnectExternal(const char **cmdargv,
int virNetSocketGetFD(virNetSocketPtr sock);
bool virNetSocketIsLocal(virNetSocketPtr sock);
int virNetSocketGetPort(virNetSocketPtr sock);
int virNetSocketGetLocalIdentity(virNetSocketPtr sock,
uid_t *uid,
pid_t *pid);