mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-10-08 07:15:46 +00:00
Introduce generic RPC server objects
To facilitate creation of new daemons providing XDR RPC services, pull a lot of the libvirtd daemon code into a set of reusable objects. * virNetServer: A server contains one or more services which accept incoming clients. It maintains the list of active clients. It has a list of RPC programs which can be used by clients. When clients produce a complete RPC message, the server passes this onto the corresponding program for handling, and queues any response back with the client. * virNetServerClient: Encapsulates a single client connection. All I/O for the client is handled, reading & writing RPC messages. * virNetServerProgram: Handles processing and dispatch of RPC method calls for a single RPC (program,version). Multiple programs can be registered with the server. * virNetServerService: Encapsulates socket(s) listening for new connections. Each service listens on a single host/port, but may have multiple sockets if on a dual IPv4/6 host. Each new daemon now merely has to define the list of RPC procedures & their handlers. It does not need to deal with any network related functionality at all.
This commit is contained in:
Daniel P. Berrange
parent
f5fa167e8d
commit
4e00b1da8a
4
cfg.mk
4
cfg.mk
@ -126,6 +126,10 @@ useless_free_options = \
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--name=virJSONValueFree \
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--name=virLastErrFreeData \
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--name=virNetMessageFree \
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--name=virNetServerFree \
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--name=virNetServerClientFree \
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--name=virNetServerProgramFree \
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--name=virNetServerServiceFree \
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--name=virNetSocketFree \
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--name=virNetSASLContextFree \
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--name=virNetSASLSessionFree \
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@ -72,6 +72,9 @@ src/remote/remote_driver.c
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src/rpc/virnetmessage.c
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src/rpc/virnetsaslcontext.c
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src/rpc/virnetsocket.c
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src/rpc/virnetserver.c
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src/rpc/virnetserverclient.c
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src/rpc/virnetserverprogram.c
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src/rpc/virnettlscontext.c
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src/secret/secret_driver.c
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src/security/security_apparmor.c
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@ -1188,7 +1188,7 @@ else
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EXTRA_DIST += $(LOCK_DRIVER_SANLOCK_SOURCES)
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endif
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noinst_LTLIBRARIES += libvirt-net-rpc.la
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noinst_LTLIBRARIES += libvirt-net-rpc.la libvirt-net-rpc-server.la
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libvirt_net_rpc_la_SOURCES = \
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rpc/virnetmessage.h rpc/virnetmessage.c \
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@ -1215,6 +1215,21 @@ libvirt_net_rpc_la_LDFLAGS = \
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libvirt_net_rpc_la_LIBADD = \
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$(CYGWIN_EXTRA_LIBADD)
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libvirt_net_rpc_server_la_SOURCES = \
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rpc/virnetserverprogram.h rpc/virnetserverprogram.c \
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rpc/virnetserverservice.h rpc/virnetserverservice.c \
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rpc/virnetserverclient.h rpc/virnetserverclient.c \
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rpc/virnetserver.h rpc/virnetserver.c
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libvirt_net_rpc_server_la_CFLAGS = \
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$(AM_CFLAGS)
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libvirt_net_rpc_server_la_LDFLAGS = \
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$(AM_LDFLAGS) \
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$(CYGWIN_EXTRA_LDFLAGS) \
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$(MINGW_EXTRA_LDFLAGS)
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libvirt_net_rpc_server_la_LIBADD = \
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$(CYGWIN_EXTRA_LIBADD)
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libexec_PROGRAMS =
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if WITH_LIBVIRTD
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706
src/rpc/virnetserver.c
Normal file
706
src/rpc/virnetserver.c
Normal file
@ -0,0 +1,706 @@
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/*
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* virnetserver.c: generic network RPC server
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*
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* Copyright (C) 2006-2011 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#include <config.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include "virnetserver.h"
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#include "logging.h"
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#include "memory.h"
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#include "virterror_internal.h"
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#include "threads.h"
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#include "threadpool.h"
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#include "util.h"
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#include "files.h"
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#include "event.h"
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#define VIR_FROM_THIS VIR_FROM_RPC
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#define virNetError(code, ...) \
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virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
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__FUNCTION__, __LINE__, __VA_ARGS__)
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typedef struct _virNetServerSignal virNetServerSignal;
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typedef virNetServerSignal *virNetServerSignalPtr;
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struct _virNetServerSignal {
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struct sigaction oldaction;
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int signum;
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virNetServerSignalFunc func;
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void *opaque;
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};
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typedef struct _virNetServerJob virNetServerJob;
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typedef virNetServerJob *virNetServerJobPtr;
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struct _virNetServerJob {
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virNetServerClientPtr client;
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virNetMessagePtr msg;
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};
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struct _virNetServer {
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int refs;
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virMutex lock;
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virThreadPoolPtr workers;
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bool privileged;
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size_t nsignals;
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virNetServerSignalPtr *signals;
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int sigread;
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int sigwrite;
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int sigwatch;
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size_t nservices;
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virNetServerServicePtr *services;
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size_t nprograms;
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virNetServerProgramPtr *programs;
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size_t nclients;
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size_t nclients_max;
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virNetServerClientPtr *clients;
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unsigned int quit :1;
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virNetTLSContextPtr tls;
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unsigned int autoShutdownTimeout;
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virNetServerAutoShutdownFunc autoShutdownFunc;
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void *autoShutdownOpaque;
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virNetServerClientInitHook clientInitHook;
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};
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static void virNetServerLock(virNetServerPtr srv)
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{
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virMutexLock(&srv->lock);
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}
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static void virNetServerUnlock(virNetServerPtr srv)
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{
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virMutexUnlock(&srv->lock);
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}
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static void virNetServerHandleJob(void *jobOpaque, void *opaque)
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{
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virNetServerPtr srv = opaque;
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virNetServerJobPtr job = jobOpaque;
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virNetServerProgramPtr prog = NULL;
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size_t i;
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virNetServerClientRef(job->client);
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virNetServerLock(srv);
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VIR_DEBUG("server=%p client=%p message=%p",
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srv, job->client, job->msg);
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for (i = 0 ; i < srv->nprograms ; i++) {
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if (virNetServerProgramMatches(srv->programs[i], job->msg)) {
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prog = srv->programs[i];
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break;
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}
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}
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if (!prog) {
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VIR_DEBUG("Cannot find program %d version %d",
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job->msg->header.prog,
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job->msg->header.vers);
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goto error;
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}
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virNetServerProgramRef(prog);
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virNetServerUnlock(srv);
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if (virNetServerProgramDispatch(prog,
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srv,
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job->client,
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job->msg) < 0)
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goto error;
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virNetServerLock(srv);
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virNetServerProgramFree(prog);
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virNetServerUnlock(srv);
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virNetServerClientFree(job->client);
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VIR_FREE(job);
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return;
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error:
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virNetServerUnlock(srv);
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virNetServerProgramFree(prog);
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virNetMessageFree(job->msg);
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virNetServerClientClose(job->client);
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virNetServerClientFree(job->client);
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VIR_FREE(job);
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}
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static int virNetServerDispatchNewMessage(virNetServerClientPtr client,
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virNetMessagePtr msg,
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void *opaque)
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{
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virNetServerPtr srv = opaque;
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virNetServerJobPtr job;
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int ret;
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VIR_DEBUG("server=%p client=%p message=%p",
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srv, client, msg);
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if (VIR_ALLOC(job) < 0) {
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virReportOOMError();
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return -1;
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}
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job->client = client;
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job->msg = msg;
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virNetServerLock(srv);
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if ((ret = virThreadPoolSendJob(srv->workers, job)) < 0)
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VIR_FREE(job);
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virNetServerUnlock(srv);
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return ret;
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}
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static int virNetServerDispatchNewClient(virNetServerServicePtr svc ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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void *opaque)
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{
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virNetServerPtr srv = opaque;
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virNetServerLock(srv);
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if (srv->nclients >= srv->nclients_max) {
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virNetError(VIR_ERR_RPC,
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_("Too many active clients (%zu), dropping connection from %s"),
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srv->nclients_max, virNetServerClientRemoteAddrString(client));
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goto error;
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}
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if (virNetServerClientInit(client) < 0)
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goto error;
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if (srv->clientInitHook &&
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srv->clientInitHook(srv, client) < 0)
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goto error;
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if (VIR_EXPAND_N(srv->clients, srv->nclients, 1) < 0) {
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virReportOOMError();
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goto error;
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}
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srv->clients[srv->nclients-1] = client;
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virNetServerClientRef(client);
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virNetServerClientSetDispatcher(client,
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virNetServerDispatchNewMessage,
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srv);
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virNetServerUnlock(srv);
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return 0;
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error:
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virNetServerUnlock(srv);
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return -1;
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}
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static void virNetServerFatalSignal(int sig, siginfo_t *siginfo ATTRIBUTE_UNUSED,
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void *context ATTRIBUTE_UNUSED)
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{
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struct sigaction sig_action;
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int origerrno;
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origerrno = errno;
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virLogEmergencyDumpAll(sig);
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/*
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* If the signal is fatal, avoid looping over this handler
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* by deactivating it
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*/
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#ifdef SIGUSR2
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if (sig != SIGUSR2) {
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#endif
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sig_action.sa_handler = SIG_IGN;
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sigaction(sig, &sig_action, NULL);
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#ifdef SIGUSR2
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}
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#endif
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errno = origerrno;
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}
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virNetServerPtr virNetServerNew(size_t min_workers,
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size_t max_workers,
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size_t max_clients,
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virNetServerClientInitHook clientInitHook)
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{
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virNetServerPtr srv;
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struct sigaction sig_action;
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if (VIR_ALLOC(srv) < 0) {
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virReportOOMError();
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return NULL;
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}
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srv->refs = 1;
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if (!(srv->workers = virThreadPoolNew(min_workers, max_workers,
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virNetServerHandleJob,
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srv)))
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goto error;
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srv->nclients_max = max_clients;
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srv->sigwrite = srv->sigread = -1;
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srv->clientInitHook = clientInitHook;
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srv->privileged = geteuid() == 0 ? true : false;
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if (virMutexInit(&srv->lock) < 0) {
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virNetError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("cannot initialize mutex"));
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goto error;
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}
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if (virEventRegisterDefaultImpl() < 0)
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goto error;
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memset(&sig_action, 0, sizeof(sig_action));
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sig_action.sa_handler = SIG_IGN;
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sigaction(SIGPIPE, &sig_action, NULL);
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/*
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* catch fatal errors to dump a log, also hook to USR2 for dynamic
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* debugging purposes or testing
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*/
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sig_action.sa_sigaction = virNetServerFatalSignal;
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sigaction(SIGFPE, &sig_action, NULL);
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sigaction(SIGSEGV, &sig_action, NULL);
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sigaction(SIGILL, &sig_action, NULL);
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sigaction(SIGABRT, &sig_action, NULL);
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#ifdef SIGBUS
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sigaction(SIGBUS, &sig_action, NULL);
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#endif
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#ifdef SIGUSR2
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sigaction(SIGUSR2, &sig_action, NULL);
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#endif
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VIR_DEBUG("srv=%p refs=%d", srv, srv->refs);
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return srv;
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error:
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virNetServerFree(srv);
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return NULL;
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}
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void virNetServerRef(virNetServerPtr srv)
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{
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virNetServerLock(srv);
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srv->refs++;
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VIR_DEBUG("srv=%p refs=%d", srv, srv->refs);
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virNetServerUnlock(srv);
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}
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bool virNetServerIsPrivileged(virNetServerPtr srv)
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{
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bool priv;
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virNetServerLock(srv);
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priv = srv->privileged;
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virNetServerUnlock(srv);
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return priv;
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}
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void virNetServerAutoShutdown(virNetServerPtr srv,
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unsigned int timeout,
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virNetServerAutoShutdownFunc func,
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void *opaque)
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{
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virNetServerLock(srv);
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srv->autoShutdownTimeout = timeout;
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srv->autoShutdownFunc = func;
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srv->autoShutdownOpaque = opaque;
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virNetServerUnlock(srv);
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}
|
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|
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|
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static sig_atomic_t sigErrors = 0;
|
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static int sigLastErrno = 0;
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static int sigWrite = -1;
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|
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static void virNetServerSignalHandler(int sig, siginfo_t * siginfo,
|
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void* context ATTRIBUTE_UNUSED)
|
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{
|
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int origerrno;
|
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int r;
|
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|
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/* set the sig num in the struct */
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siginfo->si_signo = sig;
|
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|
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origerrno = errno;
|
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r = safewrite(sigWrite, siginfo, sizeof(*siginfo));
|
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if (r == -1) {
|
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sigErrors++;
|
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sigLastErrno = errno;
|
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}
|
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errno = origerrno;
|
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}
|
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|
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static void
|
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virNetServerSignalEvent(int watch,
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int fd ATTRIBUTE_UNUSED,
|
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int events ATTRIBUTE_UNUSED,
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void *opaque) {
|
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virNetServerPtr srv = opaque;
|
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siginfo_t siginfo;
|
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int i;
|
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|
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virNetServerLock(srv);
|
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|
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if (saferead(srv->sigread, &siginfo, sizeof(siginfo)) != sizeof(siginfo)) {
|
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virReportSystemError(errno, "%s",
|
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_("Failed to read from signal pipe"));
|
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virEventRemoveHandle(watch);
|
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srv->sigwatch = -1;
|
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goto cleanup;
|
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}
|
||||
|
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for (i = 0 ; i < srv->nsignals ; i++) {
|
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if (siginfo.si_signo == srv->signals[i]->signum) {
|
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virNetServerSignalFunc func = srv->signals[i]->func;
|
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void *funcopaque = srv->signals[i]->opaque;
|
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virNetServerUnlock(srv);
|
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func(srv, &siginfo, funcopaque);
|
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return;
|
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}
|
||||
}
|
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|
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virNetError(VIR_ERR_INTERNAL_ERROR,
|
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_("Unexpected signal received: %d"), siginfo.si_signo);
|
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|
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cleanup:
|
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virNetServerUnlock(srv);
|
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}
|
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|
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static int virNetServerSignalSetup(virNetServerPtr srv)
|
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{
|
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int fds[2];
|
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|
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if (srv->sigwrite != -1)
|
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return 0;
|
||||
|
||||
if (pipe2(fds, O_CLOEXEC|O_NONBLOCK) < 0) {
|
||||
virReportSystemError(errno, "%s",
|
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_("Unable to create signal pipe"));
|
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return -1;
|
||||
}
|
||||
|
||||
if ((srv->sigwatch = virEventAddHandle(fds[0],
|
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VIR_EVENT_HANDLE_READABLE,
|
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virNetServerSignalEvent,
|
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srv, NULL)) < 0) {
|
||||
virNetError(VIR_ERR_INTERNAL_ERROR, "%s",
|
||||
_("Failed to add signal handle watch"));
|
||||
goto error;
|
||||
}
|
||||
|
||||
srv->sigread = fds[0];
|
||||
srv->sigwrite = fds[1];
|
||||
sigWrite = fds[1];
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
VIR_FORCE_CLOSE(fds[0]);
|
||||
VIR_FORCE_CLOSE(fds[1]);
|
||||
return -1;
|
||||
}
|
||||
|
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int virNetServerAddSignalHandler(virNetServerPtr srv,
|
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int signum,
|
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virNetServerSignalFunc func,
|
||||
void *opaque)
|
||||
{
|
||||
virNetServerSignalPtr sigdata;
|
||||
struct sigaction sig_action;
|
||||
|
||||
virNetServerLock(srv);
|
||||
|
||||
if (virNetServerSignalSetup(srv) < 0)
|
||||
goto error;
|
||||
|
||||
if (VIR_EXPAND_N(srv->signals, srv->nsignals, 1) < 0)
|
||||
goto no_memory;
|
||||
|
||||
if (VIR_ALLOC(sigdata) < 0)
|
||||
goto no_memory;
|
||||
|
||||
sigdata->signum = signum;
|
||||
sigdata->func = func;
|
||||
sigdata->opaque = opaque;
|
||||
|
||||
memset(&sig_action, 0, sizeof(sig_action));
|
||||
sig_action.sa_sigaction = virNetServerSignalHandler;
|
||||
#ifdef SA_SIGINFO
|
||||
sig_action.sa_flags = SA_SIGINFO;
|
||||
#endif
|
||||
sigemptyset(&sig_action.sa_mask);
|
||||
|
||||
sigaction(signum, &sig_action, &sigdata->oldaction);
|
||||
|
||||
srv->signals[srv->nsignals-1] = sigdata;
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
return 0;
|
||||
|
||||
no_memory:
|
||||
virReportOOMError();
|
||||
error:
|
||||
VIR_FREE(sigdata);
|
||||
virNetServerUnlock(srv);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
int virNetServerAddService(virNetServerPtr srv,
|
||||
virNetServerServicePtr svc)
|
||||
{
|
||||
virNetServerLock(srv);
|
||||
|
||||
if (VIR_EXPAND_N(srv->services, srv->nservices, 1) < 0)
|
||||
goto no_memory;
|
||||
|
||||
srv->services[srv->nservices-1] = svc;
|
||||
virNetServerServiceRef(svc);
|
||||
|
||||
virNetServerServiceSetDispatcher(svc,
|
||||
virNetServerDispatchNewClient,
|
||||
srv);
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
return 0;
|
||||
|
||||
no_memory:
|
||||
virReportOOMError();
|
||||
virNetServerUnlock(srv);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int virNetServerAddProgram(virNetServerPtr srv,
|
||||
virNetServerProgramPtr prog)
|
||||
{
|
||||
virNetServerLock(srv);
|
||||
|
||||
if (VIR_EXPAND_N(srv->programs, srv->nprograms, 1) < 0)
|
||||
goto no_memory;
|
||||
|
||||
srv->programs[srv->nprograms-1] = prog;
|
||||
virNetServerProgramRef(prog);
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
return 0;
|
||||
|
||||
no_memory:
|
||||
virReportOOMError();
|
||||
virNetServerUnlock(srv);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int virNetServerSetTLSContext(virNetServerPtr srv,
|
||||
virNetTLSContextPtr tls)
|
||||
{
|
||||
srv->tls = tls;
|
||||
virNetTLSContextRef(tls);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void virNetServerAutoShutdownTimer(int timerid ATTRIBUTE_UNUSED,
|
||||
void *opaque) {
|
||||
virNetServerPtr srv = opaque;
|
||||
|
||||
virNetServerLock(srv);
|
||||
|
||||
if (srv->autoShutdownFunc(srv, srv->autoShutdownOpaque)) {
|
||||
VIR_DEBUG("Automatic shutdown triggered");
|
||||
srv->quit = 1;
|
||||
}
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
}
|
||||
|
||||
|
||||
void virNetServerUpdateServices(virNetServerPtr srv,
|
||||
bool enabled)
|
||||
{
|
||||
int i;
|
||||
|
||||
virNetServerLock(srv);
|
||||
for (i = 0 ; i < srv->nservices ; i++)
|
||||
virNetServerServiceToggle(srv->services[i], enabled);
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
}
|
||||
|
||||
|
||||
void virNetServerRun(virNetServerPtr srv)
|
||||
{
|
||||
int timerid = -1;
|
||||
int timerActive = 0;
|
||||
int i;
|
||||
|
||||
virNetServerLock(srv);
|
||||
|
||||
if (srv->autoShutdownTimeout &&
|
||||
(timerid = virEventAddTimeout(-1,
|
||||
virNetServerAutoShutdownTimer,
|
||||
srv, NULL)) < 0) {
|
||||
virNetError(VIR_ERR_INTERNAL_ERROR, "%s",
|
||||
_("Failed to register shutdown timeout"));
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
while (!srv->quit) {
|
||||
/* A shutdown timeout is specified, so check
|
||||
* if any drivers have active state, if not
|
||||
* shutdown after timeout seconds
|
||||
*/
|
||||
if (srv->autoShutdownTimeout) {
|
||||
if (timerActive) {
|
||||
if (srv->clients) {
|
||||
VIR_DEBUG("Deactivating shutdown timer %d", timerid);
|
||||
virEventUpdateTimeout(timerid, -1);
|
||||
timerActive = 0;
|
||||
}
|
||||
} else {
|
||||
if (!srv->clients) {
|
||||
VIR_DEBUG("Activating shutdown timer %d", timerid);
|
||||
virEventUpdateTimeout(timerid,
|
||||
srv->autoShutdownTimeout * 1000);
|
||||
timerActive = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
if (virEventRunDefaultImpl() < 0) {
|
||||
virNetServerLock(srv);
|
||||
VIR_DEBUG("Loop iteration error, exiting");
|
||||
break;
|
||||
}
|
||||
virNetServerLock(srv);
|
||||
|
||||
reprocess:
|
||||
for (i = 0 ; i < srv->nclients ; i++) {
|
||||
if (virNetServerClientWantClose(srv->clients[i]))
|
||||
virNetServerClientClose(srv->clients[i]);
|
||||
if (virNetServerClientIsClosed(srv->clients[i])) {
|
||||
virNetServerClientFree(srv->clients[i]);
|
||||
if (srv->nclients > 1) {
|
||||
memmove(srv->clients + i,
|
||||
srv->clients + i + 1,
|
||||
sizeof(*srv->clients) * (srv->nclients - (i + 1)));
|
||||
VIR_SHRINK_N(srv->clients, srv->nclients, 1);
|
||||
} else {
|
||||
VIR_FREE(srv->clients);
|
||||
srv->nclients = 0;
|
||||
}
|
||||
|
||||
goto reprocess;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cleanup:
|
||||
virNetServerUnlock(srv);
|
||||
}
|
||||
|
||||
|
||||
void virNetServerQuit(virNetServerPtr srv)
|
||||
{
|
||||
virNetServerLock(srv);
|
||||
|
||||
srv->quit = 1;
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
}
|
||||
|
||||
void virNetServerFree(virNetServerPtr srv)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!srv)
|
||||
return;
|
||||
|
||||
virNetServerLock(srv);
|
||||
VIR_DEBUG("srv=%p refs=%d", srv, srv->refs);
|
||||
srv->refs--;
|
||||
if (srv->refs > 0) {
|
||||
virNetServerUnlock(srv);
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = 0 ; i < srv->nservices ; i++)
|
||||
virNetServerServiceToggle(srv->services[i], false);
|
||||
|
||||
virThreadPoolFree(srv->workers);
|
||||
|
||||
for (i = 0 ; i < srv->nsignals ; i++) {
|
||||
sigaction(srv->signals[i]->signum, &srv->signals[i]->oldaction, NULL);
|
||||
VIR_FREE(srv->signals[i]);
|
||||
}
|
||||
VIR_FREE(srv->signals);
|
||||
VIR_FORCE_CLOSE(srv->sigread);
|
||||
VIR_FORCE_CLOSE(srv->sigwrite);
|
||||
if (srv->sigwatch > 0)
|
||||
virEventRemoveHandle(srv->sigwatch);
|
||||
|
||||
for (i = 0 ; i < srv->nservices ; i++)
|
||||
virNetServerServiceFree(srv->services[i]);
|
||||
VIR_FREE(srv->services);
|
||||
|
||||
for (i = 0 ; i < srv->nprograms ; i++)
|
||||
virNetServerProgramFree(srv->programs[i]);
|
||||
VIR_FREE(srv->programs);
|
||||
|
||||
for (i = 0 ; i < srv->nclients ; i++) {
|
||||
virNetServerClientClose(srv->clients[i]);
|
||||
virNetServerClientFree(srv->clients[i]);
|
||||
}
|
||||
VIR_FREE(srv->clients);
|
||||
|
||||
virNetServerUnlock(srv);
|
||||
virMutexDestroy(&srv->lock);
|
||||
VIR_FREE(srv);
|
||||
}
|
||||
79
src/rpc/virnetserver.h
Normal file
79
src/rpc/virnetserver.h
Normal file
@ -0,0 +1,79 @@
|
||||
/*
|
||||
* virnetserver.h: generic network RPC server
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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_H__
|
||||
# define __VIR_NET_SERVER_H__
|
||||
|
||||
# include <signal.h>
|
||||
|
||||
# include "virnettlscontext.h"
|
||||
# include "virnetserverprogram.h"
|
||||
# include "virnetserverclient.h"
|
||||
# include "virnetserverservice.h"
|
||||
|
||||
typedef int (*virNetServerClientInitHook)(virNetServerPtr srv,
|
||||
virNetServerClientPtr client);
|
||||
|
||||
virNetServerPtr virNetServerNew(size_t min_workers,
|
||||
size_t max_workers,
|
||||
size_t max_clients,
|
||||
virNetServerClientInitHook clientInitHook);
|
||||
|
||||
typedef int (*virNetServerAutoShutdownFunc)(virNetServerPtr srv, void *opaque);
|
||||
|
||||
void virNetServerRef(virNetServerPtr srv);
|
||||
|
||||
bool virNetServerIsPrivileged(virNetServerPtr srv);
|
||||
|
||||
void virNetServerAutoShutdown(virNetServerPtr srv,
|
||||
unsigned int timeout,
|
||||
virNetServerAutoShutdownFunc func,
|
||||
void *opaque);
|
||||
|
||||
typedef void (*virNetServerSignalFunc)(virNetServerPtr srv, siginfo_t *info, void *opaque);
|
||||
|
||||
int virNetServerAddSignalHandler(virNetServerPtr srv,
|
||||
int signum,
|
||||
virNetServerSignalFunc func,
|
||||
void *opaque);
|
||||
|
||||
int virNetServerAddService(virNetServerPtr srv,
|
||||
virNetServerServicePtr svc);
|
||||
|
||||
int virNetServerAddProgram(virNetServerPtr srv,
|
||||
virNetServerProgramPtr prog);
|
||||
|
||||
int virNetServerSetTLSContext(virNetServerPtr srv,
|
||||
virNetTLSContextPtr tls);
|
||||
|
||||
void virNetServerUpdateServices(virNetServerPtr srv,
|
||||
bool enabled);
|
||||
|
||||
void virNetServerRun(virNetServerPtr srv);
|
||||
|
||||
void virNetServerQuit(virNetServerPtr srv);
|
||||
|
||||
void virNetServerFree(virNetServerPtr srv);
|
||||
|
||||
|
||||
#endif
|
||||
937
src/rpc/virnetserverclient.c
Normal file
937
src/rpc/virnetserverclient.c
Normal file
@ -0,0 +1,937 @@
|
||||
/*
|
||||
* virnetserverclient.c: generic network RPC server client
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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>
|
||||
|
||||
#if HAVE_SASL
|
||||
# include <sasl/sasl.h>
|
||||
#endif
|
||||
|
||||
#include "virnetserverclient.h"
|
||||
|
||||
#include "logging.h"
|
||||
#include "virterror_internal.h"
|
||||
#include "memory.h"
|
||||
#include "threads.h"
|
||||
|
||||
#define VIR_FROM_THIS VIR_FROM_RPC
|
||||
#define virNetError(code, ...) \
|
||||
virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
|
||||
__FUNCTION__, __LINE__, __VA_ARGS__)
|
||||
|
||||
/* Allow for filtering of incoming messages to a custom
|
||||
* dispatch processing queue, instead of the workers.
|
||||
* This allows for certain types of messages to be handled
|
||||
* strictly "in order"
|
||||
*/
|
||||
|
||||
typedef struct _virNetServerClientFilter virNetServerClientFilter;
|
||||
typedef virNetServerClientFilter *virNetServerClientFilterPtr;
|
||||
|
||||
struct _virNetServerClientFilter {
|
||||
int id;
|
||||
virNetServerClientFilterFunc func;
|
||||
void *opaque;
|
||||
|
||||
virNetServerClientFilterPtr next;
|
||||
};
|
||||
|
||||
|
||||
struct _virNetServerClient
|
||||
{
|
||||
int refs;
|
||||
bool wantClose;
|
||||
virMutex lock;
|
||||
virNetSocketPtr sock;
|
||||
int auth;
|
||||
bool readonly;
|
||||
char *identity;
|
||||
virNetTLSContextPtr tlsCtxt;
|
||||
virNetTLSSessionPtr tls;
|
||||
#if HAVE_SASL
|
||||
virNetSASLSessionPtr sasl;
|
||||
#endif
|
||||
|
||||
/* Count of messages in the 'tx' queue,
|
||||
* and the server worker pool queue
|
||||
* ie RPC calls in progress. Does not count
|
||||
* async events which are not used for
|
||||
* throttling calculations */
|
||||
size_t nrequests;
|
||||
size_t nrequests_max;
|
||||
/* Zero or one messages being received. Zero if
|
||||
* nrequests >= max_clients and throttling */
|
||||
virNetMessagePtr rx;
|
||||
/* Zero or many messages waiting for transmit
|
||||
* back to client, including async events */
|
||||
virNetMessagePtr tx;
|
||||
|
||||
/* Filters to capture messages that would otherwise
|
||||
* end up on the 'dx' queue */
|
||||
virNetServerClientFilterPtr filters;
|
||||
int nextFilterID;
|
||||
|
||||
virNetServerClientDispatchFunc dispatchFunc;
|
||||
void *dispatchOpaque;
|
||||
|
||||
void *privateData;
|
||||
virNetServerClientFreeFunc privateDataFreeFunc;
|
||||
};
|
||||
|
||||
|
||||
static void virNetServerClientDispatchEvent(virNetSocketPtr sock, int events, void *opaque);
|
||||
static void virNetServerClientUpdateEvent(virNetServerClientPtr client);
|
||||
|
||||
static void virNetServerClientLock(virNetServerClientPtr client)
|
||||
{
|
||||
virMutexLock(&client->lock);
|
||||
}
|
||||
|
||||
static void virNetServerClientUnlock(virNetServerClientPtr client)
|
||||
{
|
||||
virMutexUnlock(&client->lock);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @client: a locked client object
|
||||
*/
|
||||
static int
|
||||
virNetServerClientCalculateHandleMode(virNetServerClientPtr client) {
|
||||
int mode = 0;
|
||||
|
||||
|
||||
VIR_DEBUG("tls=%p hs=%d, rx=%p tx=%p",
|
||||
client->tls,
|
||||
client->tls ? virNetTLSSessionGetHandshakeStatus(client->tls) : -1,
|
||||
client->rx,
|
||||
client->tx);
|
||||
if (!client->sock || client->wantClose)
|
||||
return 0;
|
||||
|
||||
if (client->tls) {
|
||||
switch (virNetTLSSessionGetHandshakeStatus(client->tls)) {
|
||||
case VIR_NET_TLS_HANDSHAKE_RECVING:
|
||||
mode |= VIR_EVENT_HANDLE_READABLE;
|
||||
break;
|
||||
case VIR_NET_TLS_HANDSHAKE_SENDING:
|
||||
mode |= VIR_EVENT_HANDLE_WRITABLE;
|
||||
break;
|
||||
default:
|
||||
case VIR_NET_TLS_HANDSHAKE_COMPLETE:
|
||||
if (client->rx)
|
||||
mode |= VIR_EVENT_HANDLE_READABLE;
|
||||
if (client->tx)
|
||||
mode |= VIR_EVENT_HANDLE_WRITABLE;
|
||||
}
|
||||
} else {
|
||||
/* If there is a message on the rx queue then
|
||||
* we're wanting more input */
|
||||
if (client->rx)
|
||||
mode |= VIR_EVENT_HANDLE_READABLE;
|
||||
|
||||
/* If there are one or more messages to send back to client,
|
||||
then monitor for writability on socket */
|
||||
if (client->tx)
|
||||
mode |= VIR_EVENT_HANDLE_WRITABLE;
|
||||
}
|
||||
VIR_DEBUG("mode=%d", mode);
|
||||
return mode;
|
||||
}
|
||||
|
||||
/*
|
||||
* @server: a locked or unlocked server object
|
||||
* @client: a locked client object
|
||||
*/
|
||||
static int virNetServerClientRegisterEvent(virNetServerClientPtr client)
|
||||
{
|
||||
int mode = virNetServerClientCalculateHandleMode(client);
|
||||
|
||||
VIR_DEBUG("Registering client event callback %d", mode);
|
||||
if (virNetSocketAddIOCallback(client->sock,
|
||||
mode,
|
||||
virNetServerClientDispatchEvent,
|
||||
client) < 0)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* @client: a locked client object
|
||||
*/
|
||||
static void virNetServerClientUpdateEvent(virNetServerClientPtr client)
|
||||
{
|
||||
int mode;
|
||||
|
||||
if (!client->sock)
|
||||
return;
|
||||
|
||||
mode = virNetServerClientCalculateHandleMode(client);
|
||||
|
||||
virNetSocketUpdateIOCallback(client->sock, mode);
|
||||
}
|
||||
|
||||
|
||||
int virNetServerClientAddFilter(virNetServerClientPtr client,
|
||||
virNetServerClientFilterFunc func,
|
||||
void *opaque)
|
||||
{
|
||||
virNetServerClientFilterPtr filter;
|
||||
int ret = -1;
|
||||
|
||||
virNetServerClientLock(client);
|
||||
|
||||
if (VIR_ALLOC(filter) < 0) {
|
||||
virReportOOMError();
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
filter->id = client->nextFilterID++;
|
||||
filter->func = func;
|
||||
filter->opaque = opaque;
|
||||
|
||||
filter->next = client->filters;
|
||||
client->filters = filter;
|
||||
|
||||
ret = filter->id;
|
||||
|
||||
cleanup:
|
||||
virNetServerClientUnlock(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerClientRemoveFilter(virNetServerClientPtr client,
|
||||
int filterID)
|
||||
{
|
||||
virNetServerClientFilterPtr tmp, prev;
|
||||
virNetServerClientLock(client);
|
||||
|
||||
prev = NULL;
|
||||
tmp = client->filters;
|
||||
while (tmp) {
|
||||
if (tmp->id == filterID) {
|
||||
if (prev)
|
||||
prev->next = tmp->next;
|
||||
else
|
||||
client->filters = tmp->next;
|
||||
|
||||
VIR_FREE(tmp);
|
||||
break;
|
||||
}
|
||||
tmp = tmp->next;
|
||||
}
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
/* Check the client's access. */
|
||||
static int
|
||||
virNetServerClientCheckAccess(virNetServerClientPtr client)
|
||||
{
|
||||
virNetMessagePtr confirm;
|
||||
|
||||
/* Verify client certificate. */
|
||||
if (virNetTLSContextCheckCertificate(client->tlsCtxt, client->tls) < 0)
|
||||
return -1;
|
||||
|
||||
if (client->tx) {
|
||||
VIR_DEBUG("client had unexpected data pending tx after access check");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!(confirm = virNetMessageNew()))
|
||||
return -1;
|
||||
|
||||
/* Checks have succeeded. Write a '\1' byte back to the client to
|
||||
* indicate this (otherwise the socket is abruptly closed).
|
||||
* (NB. The '\1' byte is sent in an encrypted record).
|
||||
*/
|
||||
confirm->bufferLength = 1;
|
||||
confirm->bufferOffset = 0;
|
||||
confirm->buffer[0] = '\1';
|
||||
|
||||
client->tx = confirm;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
virNetServerClientPtr virNetServerClientNew(virNetSocketPtr sock,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls)
|
||||
{
|
||||
virNetServerClientPtr client;
|
||||
|
||||
VIR_DEBUG("sock=%p auth=%d tls=%p", sock, auth, tls);
|
||||
|
||||
if (VIR_ALLOC(client) < 0) {
|
||||
virReportOOMError();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (virMutexInit(&client->lock) < 0)
|
||||
goto error;
|
||||
|
||||
client->refs = 1;
|
||||
client->sock = sock;
|
||||
client->auth = auth;
|
||||
client->readonly = readonly;
|
||||
client->tlsCtxt = tls;
|
||||
client->nrequests_max = 10; /* XXX */
|
||||
|
||||
if (tls)
|
||||
virNetTLSContextRef(tls);
|
||||
|
||||
/* Prepare one for packet receive */
|
||||
if (!(client->rx = virNetMessageNew()))
|
||||
goto error;
|
||||
client->rx->bufferLength = VIR_NET_MESSAGE_LEN_MAX;
|
||||
client->nrequests = 1;
|
||||
|
||||
VIR_DEBUG("client=%p refs=%d", client, client->refs);
|
||||
|
||||
return client;
|
||||
|
||||
error:
|
||||
/* XXX ref counting is better than this */
|
||||
client->sock = NULL; /* Caller owns 'sock' upon failure */
|
||||
virNetServerClientFree(client);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void virNetServerClientRef(virNetServerClientPtr client)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
client->refs++;
|
||||
VIR_DEBUG("client=%p refs=%d", client, client->refs);
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
int virNetServerClientGetAuth(virNetServerClientPtr client)
|
||||
{
|
||||
int auth;
|
||||
virNetServerClientLock(client);
|
||||
auth = client->auth;
|
||||
virNetServerClientUnlock(client);
|
||||
return auth;
|
||||
}
|
||||
|
||||
bool virNetServerClientGetReadonly(virNetServerClientPtr client)
|
||||
{
|
||||
bool readonly;
|
||||
virNetServerClientLock(client);
|
||||
readonly = client->readonly;
|
||||
virNetServerClientUnlock(client);
|
||||
return readonly;
|
||||
}
|
||||
|
||||
|
||||
bool virNetServerClientHasTLSSession(virNetServerClientPtr client)
|
||||
{
|
||||
bool has;
|
||||
virNetServerClientLock(client);
|
||||
has = client->tls ? true : false;
|
||||
virNetServerClientUnlock(client);
|
||||
return has;
|
||||
}
|
||||
|
||||
int virNetServerClientGetTLSKeySize(virNetServerClientPtr client)
|
||||
{
|
||||
int size = 0;
|
||||
virNetServerClientLock(client);
|
||||
if (client->tls)
|
||||
size = virNetTLSSessionGetKeySize(client->tls);
|
||||
virNetServerClientUnlock(client);
|
||||
return size;
|
||||
}
|
||||
|
||||
int virNetServerClientGetFD(virNetServerClientPtr client)
|
||||
{
|
||||
int fd = 0;
|
||||
virNetServerClientLock(client);
|
||||
fd = virNetSocketGetFD(client->sock);
|
||||
virNetServerClientUnlock(client);
|
||||
return fd;
|
||||
}
|
||||
|
||||
int virNetServerClientGetLocalIdentity(virNetServerClientPtr client,
|
||||
uid_t *uid, pid_t *pid)
|
||||
{
|
||||
int ret;
|
||||
virNetServerClientLock(client);
|
||||
ret = virNetSocketGetLocalIdentity(client->sock, uid, pid);
|
||||
virNetServerClientUnlock(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool virNetServerClientIsSecure(virNetServerClientPtr client)
|
||||
{
|
||||
bool secure = false;
|
||||
virNetServerClientLock(client);
|
||||
if (client->tls)
|
||||
secure = true;
|
||||
#if HAVE_SASL
|
||||
if (client->sasl)
|
||||
secure = true;
|
||||
#endif
|
||||
if (virNetSocketIsLocal(client->sock))
|
||||
secure = true;
|
||||
virNetServerClientUnlock(client);
|
||||
return secure;
|
||||
}
|
||||
|
||||
|
||||
#if HAVE_SASL
|
||||
void virNetServerClientSetSASLSession(virNetServerClientPtr client,
|
||||
virNetSASLSessionPtr sasl)
|
||||
{
|
||||
/* We don't set the sasl session on the socket here
|
||||
* because we need to send out the auth confirmation
|
||||
* in the clear. Only once we complete the next 'tx'
|
||||
* operation do we switch to SASL mode
|
||||
*/
|
||||
virNetServerClientLock(client);
|
||||
client->sasl = sasl;
|
||||
virNetSASLSessionRef(sasl);
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
int virNetServerClientSetIdentity(virNetServerClientPtr client,
|
||||
const char *identity)
|
||||
{
|
||||
int ret = -1;
|
||||
virNetServerClientLock(client);
|
||||
if (!(client->identity = strdup(identity))) {
|
||||
virReportOOMError();
|
||||
goto error;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
error:
|
||||
virNetServerClientUnlock(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
const char *virNetServerClientGetIdentity(virNetServerClientPtr client)
|
||||
{
|
||||
const char *identity;
|
||||
virNetServerClientLock(client);
|
||||
identity = client->identity;
|
||||
virNetServerClientLock(client);
|
||||
return identity;
|
||||
}
|
||||
|
||||
void virNetServerClientSetPrivateData(virNetServerClientPtr client,
|
||||
void *opaque,
|
||||
virNetServerClientFreeFunc ff)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
|
||||
if (client->privateData &&
|
||||
client->privateDataFreeFunc)
|
||||
client->privateDataFreeFunc(client->privateData);
|
||||
|
||||
client->privateData = opaque;
|
||||
client->privateDataFreeFunc = ff;
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
void *virNetServerClientGetPrivateData(virNetServerClientPtr client)
|
||||
{
|
||||
void *data;
|
||||
virNetServerClientLock(client);
|
||||
data = client->privateData;
|
||||
virNetServerClientUnlock(client);
|
||||
return data;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerClientSetDispatcher(virNetServerClientPtr client,
|
||||
virNetServerClientDispatchFunc func,
|
||||
void *opaque)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
client->dispatchFunc = func;
|
||||
client->dispatchOpaque = opaque;
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
const char *virNetServerClientLocalAddrString(virNetServerClientPtr client)
|
||||
{
|
||||
return virNetSocketLocalAddrString(client->sock);
|
||||
}
|
||||
|
||||
|
||||
const char *virNetServerClientRemoteAddrString(virNetServerClientPtr client)
|
||||
{
|
||||
return virNetSocketRemoteAddrString(client->sock);
|
||||
}
|
||||
|
||||
|
||||
void virNetServerClientFree(virNetServerClientPtr client)
|
||||
{
|
||||
if (!client)
|
||||
return;
|
||||
|
||||
virNetServerClientLock(client);
|
||||
VIR_DEBUG("client=%p refs=%d", client, client->refs);
|
||||
|
||||
client->refs--;
|
||||
if (client->refs > 0) {
|
||||
virNetServerClientUnlock(client);
|
||||
return;
|
||||
}
|
||||
|
||||
if (client->privateData &&
|
||||
client->privateDataFreeFunc)
|
||||
client->privateDataFreeFunc(client->privateData);
|
||||
|
||||
VIR_FREE(client->identity);
|
||||
#if HAVE_SASL
|
||||
virNetSASLSessionFree(client->sasl);
|
||||
#endif
|
||||
virNetTLSSessionFree(client->tls);
|
||||
virNetTLSContextFree(client->tlsCtxt);
|
||||
virNetSocketFree(client->sock);
|
||||
virNetServerClientUnlock(client);
|
||||
virMutexDestroy(&client->lock);
|
||||
VIR_FREE(client);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
*
|
||||
* We don't free stuff here, merely disconnect the client's
|
||||
* network socket & resources.
|
||||
*
|
||||
* Full free of the client is done later in a safe point
|
||||
* where it can be guaranteed it is no longer in use
|
||||
*/
|
||||
void virNetServerClientClose(virNetServerClientPtr client)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
VIR_DEBUG("client=%p refs=%d", client, client->refs);
|
||||
if (!client->sock) {
|
||||
virNetServerClientUnlock(client);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Do now, even though we don't close the socket
|
||||
* until end, to ensure we don't get invoked
|
||||
* again due to tls shutdown */
|
||||
if (client->sock)
|
||||
virNetSocketRemoveIOCallback(client->sock);
|
||||
|
||||
if (client->tls) {
|
||||
virNetTLSSessionFree(client->tls);
|
||||
client->tls = NULL;
|
||||
}
|
||||
if (client->sock) {
|
||||
virNetSocketFree(client->sock);
|
||||
client->sock = NULL;
|
||||
}
|
||||
|
||||
while (client->rx) {
|
||||
virNetMessagePtr msg
|
||||
= virNetMessageQueueServe(&client->rx);
|
||||
virNetMessageFree(msg);
|
||||
}
|
||||
while (client->tx) {
|
||||
virNetMessagePtr msg
|
||||
= virNetMessageQueueServe(&client->tx);
|
||||
virNetMessageFree(msg);
|
||||
}
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
bool virNetServerClientIsClosed(virNetServerClientPtr client)
|
||||
{
|
||||
bool closed;
|
||||
virNetServerClientLock(client);
|
||||
closed = client->sock == NULL ? true : false;
|
||||
virNetServerClientUnlock(client);
|
||||
return closed;
|
||||
}
|
||||
|
||||
void virNetServerClientMarkClose(virNetServerClientPtr client)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
client->wantClose = true;
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
bool virNetServerClientWantClose(virNetServerClientPtr client)
|
||||
{
|
||||
bool wantClose;
|
||||
virNetServerClientLock(client);
|
||||
wantClose = client->wantClose;
|
||||
virNetServerClientUnlock(client);
|
||||
return wantClose;
|
||||
}
|
||||
|
||||
|
||||
int virNetServerClientInit(virNetServerClientPtr client)
|
||||
{
|
||||
virNetServerClientLock(client);
|
||||
|
||||
if (!client->tlsCtxt) {
|
||||
/* Plain socket, so prepare to read first message */
|
||||
if (virNetServerClientRegisterEvent(client) < 0)
|
||||
goto error;
|
||||
} else {
|
||||
int ret;
|
||||
|
||||
if (!(client->tls = virNetTLSSessionNew(client->tlsCtxt,
|
||||
NULL)))
|
||||
goto error;
|
||||
|
||||
virNetSocketSetTLSSession(client->sock,
|
||||
client->tls);
|
||||
|
||||
/* Begin the TLS handshake. */
|
||||
ret = virNetTLSSessionHandshake(client->tls);
|
||||
if (ret == 0) {
|
||||
/* Unlikely, but ... Next step is to check the certificate. */
|
||||
if (virNetServerClientCheckAccess(client) < 0)
|
||||
goto error;
|
||||
|
||||
/* Handshake & cert check OK, so prepare to read first message */
|
||||
if (virNetServerClientRegisterEvent(client) < 0)
|
||||
goto error;
|
||||
} else if (ret > 0) {
|
||||
/* Most likely, need to do more handshake data */
|
||||
if (virNetServerClientRegisterEvent(client) < 0)
|
||||
goto error;
|
||||
} else {
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
return 0;
|
||||
|
||||
error:
|
||||
client->wantClose = true;
|
||||
virNetServerClientUnlock(client);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* Read data into buffer using wire decoding (plain or TLS)
|
||||
*
|
||||
* Returns:
|
||||
* -1 on error or EOF
|
||||
* 0 on EAGAIN
|
||||
* n number of bytes
|
||||
*/
|
||||
static ssize_t virNetServerClientRead(virNetServerClientPtr client)
|
||||
{
|
||||
ssize_t ret;
|
||||
|
||||
if (client->rx->bufferLength <= client->rx->bufferOffset) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("unexpected zero/negative length request %lld"),
|
||||
(long long int)(client->rx->bufferLength - client->rx->bufferOffset));
|
||||
client->wantClose = true;
|
||||
return -1;
|
||||
}
|
||||
|
||||
ret = virNetSocketRead(client->sock,
|
||||
client->rx->buffer + client->rx->bufferOffset,
|
||||
client->rx->bufferLength - client->rx->bufferOffset);
|
||||
|
||||
if (ret <= 0)
|
||||
return ret;
|
||||
|
||||
client->rx->bufferOffset += ret;
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Read data until we get a complete message to process
|
||||
*/
|
||||
static void virNetServerClientDispatchRead(virNetServerClientPtr client)
|
||||
{
|
||||
readmore:
|
||||
if (virNetServerClientRead(client) < 0) {
|
||||
client->wantClose = true;
|
||||
return; /* Error */
|
||||
}
|
||||
|
||||
if (client->rx->bufferOffset < client->rx->bufferLength)
|
||||
return; /* Still not read enough */
|
||||
|
||||
/* Either done with length word header */
|
||||
if (client->rx->bufferLength == VIR_NET_MESSAGE_LEN_MAX) {
|
||||
if (virNetMessageDecodeLength(client->rx) < 0)
|
||||
return;
|
||||
|
||||
virNetServerClientUpdateEvent(client);
|
||||
|
||||
/* Try and read payload immediately instead of going back
|
||||
into poll() because chances are the data is already
|
||||
waiting for us */
|
||||
goto readmore;
|
||||
} else {
|
||||
/* Grab the completed message */
|
||||
virNetMessagePtr msg = virNetMessageQueueServe(&client->rx);
|
||||
virNetServerClientFilterPtr filter;
|
||||
|
||||
/* Decode the header so we can use it for routing decisions */
|
||||
if (virNetMessageDecodeHeader(msg) < 0) {
|
||||
virNetMessageFree(msg);
|
||||
client->wantClose = true;
|
||||
return;
|
||||
}
|
||||
|
||||
/* Maybe send off for queue against a filter */
|
||||
filter = client->filters;
|
||||
while (filter) {
|
||||
int ret = filter->func(client, msg, filter->opaque);
|
||||
if (ret < 0 || ret > 0) {
|
||||
virNetMessageFree(msg);
|
||||
msg = NULL;
|
||||
if (ret < 0)
|
||||
client->wantClose = true;
|
||||
break;
|
||||
}
|
||||
|
||||
filter = filter->next;
|
||||
}
|
||||
|
||||
/* Send off to for normal dispatch to workers */
|
||||
if (msg) {
|
||||
if (!client->dispatchFunc ||
|
||||
client->dispatchFunc(client, msg, client->dispatchOpaque) < 0) {
|
||||
virNetMessageFree(msg);
|
||||
client->wantClose = true;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* Possibly need to create another receive buffer */
|
||||
if (client->nrequests < client->nrequests_max) {
|
||||
if (!(client->rx = virNetMessageNew())) {
|
||||
client->wantClose = true;
|
||||
}
|
||||
client->rx->bufferLength = VIR_NET_MESSAGE_LEN_MAX;
|
||||
client->nrequests++;
|
||||
}
|
||||
virNetServerClientUpdateEvent(client);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Send client->tx using no encoding
|
||||
*
|
||||
* Returns:
|
||||
* -1 on error or EOF
|
||||
* 0 on EAGAIN
|
||||
* n number of bytes
|
||||
*/
|
||||
static ssize_t virNetServerClientWrite(virNetServerClientPtr client)
|
||||
{
|
||||
ssize_t ret;
|
||||
|
||||
if (client->tx->bufferLength < client->tx->bufferOffset) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("unexpected zero/negative length request %lld"),
|
||||
(long long int)(client->tx->bufferLength - client->tx->bufferOffset));
|
||||
client->wantClose = true;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (client->tx->bufferLength == client->tx->bufferOffset)
|
||||
return 1;
|
||||
|
||||
ret = virNetSocketWrite(client->sock,
|
||||
client->tx->buffer + client->tx->bufferOffset,
|
||||
client->tx->bufferLength - client->tx->bufferOffset);
|
||||
if (ret <= 0)
|
||||
return ret; /* -1 error, 0 = egain */
|
||||
|
||||
client->tx->bufferOffset += ret;
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Process all queued client->tx messages until
|
||||
* we would block on I/O
|
||||
*/
|
||||
static void
|
||||
virNetServerClientDispatchWrite(virNetServerClientPtr client)
|
||||
{
|
||||
while (client->tx) {
|
||||
ssize_t ret;
|
||||
|
||||
ret = virNetServerClientWrite(client);
|
||||
if (ret < 0) {
|
||||
client->wantClose = true;
|
||||
return;
|
||||
}
|
||||
if (ret == 0)
|
||||
return; /* Would block on write EAGAIN */
|
||||
|
||||
if (client->tx->bufferOffset == client->tx->bufferLength) {
|
||||
virNetMessagePtr msg;
|
||||
#if HAVE_SASL
|
||||
/* Completed this 'tx' operation, so now read for all
|
||||
* future rx/tx to be under a SASL SSF layer
|
||||
*/
|
||||
if (client->sasl) {
|
||||
virNetSocketSetSASLSession(client->sock, client->sasl);
|
||||
virNetSASLSessionFree(client->sasl);
|
||||
client->sasl = NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Get finished msg from head of tx queue */
|
||||
msg = virNetMessageQueueServe(&client->tx);
|
||||
|
||||
if (msg->header.type == VIR_NET_REPLY) {
|
||||
client->nrequests--;
|
||||
/* See if the recv queue is currently throttled */
|
||||
if (!client->rx &&
|
||||
client->nrequests < client->nrequests_max) {
|
||||
/* Ready to recv more messages */
|
||||
client->rx = msg;
|
||||
client->rx->bufferLength = VIR_NET_MESSAGE_LEN_MAX;
|
||||
msg = NULL;
|
||||
client->nrequests++;
|
||||
}
|
||||
}
|
||||
|
||||
virNetMessageFree(msg);
|
||||
|
||||
virNetServerClientUpdateEvent(client);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
virNetServerClientDispatchHandshake(virNetServerClientPtr client)
|
||||
{
|
||||
int ret;
|
||||
/* Continue the handshake. */
|
||||
ret = virNetTLSSessionHandshake(client->tls);
|
||||
if (ret == 0) {
|
||||
/* Finished. Next step is to check the certificate. */
|
||||
if (virNetServerClientCheckAccess(client) < 0)
|
||||
client->wantClose = true;
|
||||
else
|
||||
virNetServerClientUpdateEvent(client);
|
||||
} else if (ret > 0) {
|
||||
/* Carry on waiting for more handshake. Update
|
||||
the events just in case handshake data flow
|
||||
direction has changed */
|
||||
virNetServerClientUpdateEvent (client);
|
||||
} else {
|
||||
/* Fatal error in handshake */
|
||||
client->wantClose = true;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
virNetServerClientDispatchEvent(virNetSocketPtr sock, int events, void *opaque)
|
||||
{
|
||||
virNetServerClientPtr client = opaque;
|
||||
|
||||
virNetServerClientLock(client);
|
||||
|
||||
if (client->sock != sock) {
|
||||
virNetSocketRemoveIOCallback(sock);
|
||||
virNetServerClientUnlock(client);
|
||||
return;
|
||||
}
|
||||
|
||||
if (events & (VIR_EVENT_HANDLE_WRITABLE |
|
||||
VIR_EVENT_HANDLE_READABLE)) {
|
||||
if (client->tls &&
|
||||
virNetTLSSessionGetHandshakeStatus(client->tls) !=
|
||||
VIR_NET_TLS_HANDSHAKE_COMPLETE) {
|
||||
virNetServerClientDispatchHandshake(client);
|
||||
} else {
|
||||
if (events & VIR_EVENT_HANDLE_WRITABLE)
|
||||
virNetServerClientDispatchWrite(client);
|
||||
if (events & VIR_EVENT_HANDLE_READABLE)
|
||||
virNetServerClientDispatchRead(client);
|
||||
}
|
||||
}
|
||||
|
||||
/* NB, will get HANGUP + READABLE at same time upon
|
||||
* disconnect */
|
||||
if (events & (VIR_EVENT_HANDLE_ERROR |
|
||||
VIR_EVENT_HANDLE_HANGUP))
|
||||
client->wantClose = true;
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
}
|
||||
|
||||
|
||||
int virNetServerClientSendMessage(virNetServerClientPtr client,
|
||||
virNetMessagePtr msg)
|
||||
{
|
||||
int ret = -1;
|
||||
VIR_DEBUG("msg=%p proc=%d len=%zu offset=%zu",
|
||||
msg, msg->header.proc,
|
||||
msg->bufferLength, msg->bufferOffset);
|
||||
virNetServerClientLock(client);
|
||||
|
||||
if (client->sock && !client->wantClose) {
|
||||
virNetMessageQueuePush(&client->tx, msg);
|
||||
|
||||
virNetServerClientUpdateEvent(client);
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
virNetServerClientUnlock(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
bool virNetServerClientNeedAuth(virNetServerClientPtr client)
|
||||
{
|
||||
bool need = false;
|
||||
virNetServerClientLock(client);
|
||||
if (client->auth && !client->identity)
|
||||
need = true;
|
||||
virNetServerClientUnlock(client);
|
||||
return need;
|
||||
}
|
||||
106
src/rpc/virnetserverclient.h
Normal file
106
src/rpc/virnetserverclient.h
Normal file
@ -0,0 +1,106 @@
|
||||
/*
|
||||
* virnetserverclient.h: generic network RPC server client
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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_CLIENT_H__
|
||||
# define __VIR_NET_SERVER_CLIENT_H__
|
||||
|
||||
# include "virnetsocket.h"
|
||||
# include "virnetmessage.h"
|
||||
|
||||
typedef struct _virNetServerClient virNetServerClient;
|
||||
typedef virNetServerClient *virNetServerClientPtr;
|
||||
|
||||
typedef int (*virNetServerClientDispatchFunc)(virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
void *opaque);
|
||||
|
||||
typedef int (*virNetServerClientFilterFunc)(virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
void *opaque);
|
||||
|
||||
virNetServerClientPtr virNetServerClientNew(virNetSocketPtr sock,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls);
|
||||
|
||||
int virNetServerClientAddFilter(virNetServerClientPtr client,
|
||||
virNetServerClientFilterFunc func,
|
||||
void *opaque);
|
||||
|
||||
void virNetServerClientRemoveFilter(virNetServerClientPtr client,
|
||||
int filterID);
|
||||
|
||||
int virNetServerClientGetAuth(virNetServerClientPtr client);
|
||||
bool virNetServerClientGetReadonly(virNetServerClientPtr client);
|
||||
|
||||
bool virNetServerClientHasTLSSession(virNetServerClientPtr client);
|
||||
int virNetServerClientGetTLSKeySize(virNetServerClientPtr client);
|
||||
|
||||
# ifdef HAVE_SASL
|
||||
void virNetServerClientSetSASLSession(virNetServerClientPtr client,
|
||||
virNetSASLSessionPtr sasl);
|
||||
# endif
|
||||
|
||||
int virNetServerClientGetFD(virNetServerClientPtr client);
|
||||
|
||||
bool virNetServerClientIsSecure(virNetServerClientPtr client);
|
||||
|
||||
int virNetServerClientSetIdentity(virNetServerClientPtr client,
|
||||
const char *identity);
|
||||
const char *virNetServerClientGetIdentity(virNetServerClientPtr client);
|
||||
|
||||
int virNetServerClientGetLocalIdentity(virNetServerClientPtr client,
|
||||
uid_t *uid, pid_t *pid);
|
||||
|
||||
void virNetServerClientRef(virNetServerClientPtr client);
|
||||
|
||||
typedef void (*virNetServerClientFreeFunc)(void *data);
|
||||
|
||||
void virNetServerClientSetPrivateData(virNetServerClientPtr client,
|
||||
void *opaque,
|
||||
virNetServerClientFreeFunc ff);
|
||||
void *virNetServerClientGetPrivateData(virNetServerClientPtr client);
|
||||
|
||||
void virNetServerClientSetDispatcher(virNetServerClientPtr client,
|
||||
virNetServerClientDispatchFunc func,
|
||||
void *opaque);
|
||||
void virNetServerClientClose(virNetServerClientPtr client);
|
||||
|
||||
bool virNetServerClientIsClosed(virNetServerClientPtr client);
|
||||
void virNetServerClientMarkClose(virNetServerClientPtr client);
|
||||
bool virNetServerClientWantClose(virNetServerClientPtr client);
|
||||
|
||||
int virNetServerClientInit(virNetServerClientPtr client);
|
||||
|
||||
const char *virNetServerClientLocalAddrString(virNetServerClientPtr client);
|
||||
const char *virNetServerClientRemoteAddrString(virNetServerClientPtr client);
|
||||
|
||||
int virNetServerClientSendMessage(virNetServerClientPtr client,
|
||||
virNetMessagePtr msg);
|
||||
|
||||
bool virNetServerClientNeedAuth(virNetServerClientPtr client);
|
||||
|
||||
void virNetServerClientFree(virNetServerClientPtr client);
|
||||
|
||||
|
||||
#endif /* __VIR_NET_SERVER_CLIENT_H__ */
|
||||
455
src/rpc/virnetserverprogram.c
Normal file
455
src/rpc/virnetserverprogram.c
Normal file
@ -0,0 +1,455 @@
|
||||
/*
|
||||
* virnetserverprogram.c: generic network RPC server program
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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 "virnetserverprogram.h"
|
||||
#include "virnetserverclient.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 _virNetServerProgram {
|
||||
int refs;
|
||||
|
||||
unsigned program;
|
||||
unsigned version;
|
||||
virNetServerProgramProcPtr procs;
|
||||
size_t nprocs;
|
||||
};
|
||||
|
||||
virNetServerProgramPtr virNetServerProgramNew(unsigned program,
|
||||
unsigned version,
|
||||
virNetServerProgramProcPtr procs,
|
||||
size_t nprocs)
|
||||
{
|
||||
virNetServerProgramPtr prog;
|
||||
|
||||
if (VIR_ALLOC(prog) < 0) {
|
||||
virReportOOMError();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
prog->refs = 1;
|
||||
prog->program = program;
|
||||
prog->version = version;
|
||||
prog->procs = procs;
|
||||
prog->nprocs = nprocs;
|
||||
|
||||
VIR_DEBUG("prog=%p refs=%d", prog, prog->refs);
|
||||
|
||||
return prog;
|
||||
}
|
||||
|
||||
|
||||
int virNetServerProgramGetID(virNetServerProgramPtr prog)
|
||||
{
|
||||
return prog->program;
|
||||
}
|
||||
|
||||
|
||||
int virNetServerProgramGetVersion(virNetServerProgramPtr prog)
|
||||
{
|
||||
return prog->version;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerProgramRef(virNetServerProgramPtr prog)
|
||||
{
|
||||
prog->refs++;
|
||||
VIR_DEBUG("prog=%p refs=%d", prog, prog->refs);
|
||||
}
|
||||
|
||||
|
||||
int virNetServerProgramMatches(virNetServerProgramPtr prog,
|
||||
virNetMessagePtr msg)
|
||||
{
|
||||
if (prog->program == msg->header.prog &&
|
||||
prog->version == msg->header.vers)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static virNetServerProgramProcPtr virNetServerProgramGetProc(virNetServerProgramPtr prog,
|
||||
int procedure)
|
||||
{
|
||||
if (procedure < 0)
|
||||
return NULL;
|
||||
if (procedure >= prog->nprocs)
|
||||
return NULL;
|
||||
|
||||
return &prog->procs[procedure];
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
virNetServerProgramSendError(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
virNetMessageErrorPtr rerr,
|
||||
int procedure,
|
||||
int type,
|
||||
int serial)
|
||||
{
|
||||
VIR_DEBUG("prog=%d ver=%d proc=%d type=%d serial=%d msg=%p rerr=%p",
|
||||
prog->program, prog->version, procedure, type, serial, msg, rerr);
|
||||
|
||||
virNetMessageSaveError(rerr);
|
||||
|
||||
/* Return header. */
|
||||
msg->header.prog = prog->program;
|
||||
msg->header.vers = prog->version;
|
||||
msg->header.proc = procedure;
|
||||
msg->header.type = type;
|
||||
msg->header.serial = serial;
|
||||
msg->header.status = VIR_NET_ERROR;
|
||||
|
||||
if (virNetMessageEncodeHeader(msg) < 0)
|
||||
goto error;
|
||||
|
||||
if (virNetMessageEncodePayload(msg, (xdrproc_t)xdr_virNetMessageError, rerr) < 0)
|
||||
goto error;
|
||||
xdr_free((xdrproc_t)xdr_virNetMessageError, (void*)rerr);
|
||||
|
||||
/* Put reply on end of tx queue to send out */
|
||||
if (virNetServerClientSendMessage(client, msg) < 0)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
VIR_WARN("Failed to serialize remote error '%p'", rerr);
|
||||
xdr_free((xdrproc_t)xdr_virNetMessageError, (void*)rerr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @client: the client to send the error to
|
||||
* @req: the message this error is in reply to
|
||||
*
|
||||
* Send an error message to the client
|
||||
*
|
||||
* Returns 0 if the error was sent, -1 upon fatal error
|
||||
*/
|
||||
int
|
||||
virNetServerProgramSendReplyError(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
virNetMessageErrorPtr rerr,
|
||||
virNetMessageHeaderPtr req)
|
||||
{
|
||||
/*
|
||||
* For data streams, errors are sent back as data streams
|
||||
* For method calls, errors are sent back as method replies
|
||||
*/
|
||||
return virNetServerProgramSendError(prog,
|
||||
client,
|
||||
msg,
|
||||
rerr,
|
||||
req->proc,
|
||||
req->type == VIR_NET_STREAM ? VIR_NET_STREAM : VIR_NET_REPLY,
|
||||
req->serial);
|
||||
}
|
||||
|
||||
|
||||
int virNetServerProgramSendStreamError(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
virNetMessageErrorPtr rerr,
|
||||
int procedure,
|
||||
int serial)
|
||||
{
|
||||
return virNetServerProgramSendError(prog,
|
||||
client,
|
||||
msg,
|
||||
rerr,
|
||||
procedure,
|
||||
VIR_NET_STREAM,
|
||||
serial);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
virNetServerProgramDispatchCall(virNetServerProgramPtr prog,
|
||||
virNetServerPtr server,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg);
|
||||
|
||||
/*
|
||||
* @server: the unlocked server object
|
||||
* @client: the unlocked client object
|
||||
* @msg: the complete incoming message packet, with header already decoded
|
||||
*
|
||||
* This function is intended to be called from worker threads
|
||||
* when an incoming message is ready to be dispatched for
|
||||
* execution.
|
||||
*
|
||||
* Upon successful return the '@msg' instance will be released
|
||||
* by this function (or more often, reused to send a reply).
|
||||
* Upon failure, the '@msg' must be freed by the caller.
|
||||
*
|
||||
* Returns 0 if the message was dispatched, -1 upon fatal error
|
||||
*/
|
||||
int virNetServerProgramDispatch(virNetServerProgramPtr prog,
|
||||
virNetServerPtr server,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg)
|
||||
{
|
||||
int ret = -1;
|
||||
virNetMessageError rerr;
|
||||
|
||||
memset(&rerr, 0, sizeof(rerr));
|
||||
|
||||
VIR_DEBUG("prog=%d ver=%d type=%d status=%d serial=%d proc=%d",
|
||||
msg->header.prog, msg->header.vers, msg->header.type,
|
||||
msg->header.status, msg->header.serial, msg->header.proc);
|
||||
|
||||
/* Check version, etc. */
|
||||
if (msg->header.prog != prog->program) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("program mismatch (actual %x, expected %x)"),
|
||||
msg->header.prog, prog->program);
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (msg->header.vers != prog->version) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("version mismatch (actual %x, expected %x)"),
|
||||
msg->header.vers, prog->version);
|
||||
goto error;
|
||||
}
|
||||
|
||||
switch (msg->header.type) {
|
||||
case VIR_NET_CALL:
|
||||
ret = virNetServerProgramDispatchCall(prog, server, client, msg);
|
||||
break;
|
||||
|
||||
case VIR_NET_STREAM:
|
||||
/* Since stream data is non-acked, async, we may continue to receive
|
||||
* stream packets after we closed down a stream. Just drop & ignore
|
||||
* these.
|
||||
*/
|
||||
VIR_INFO("Ignoring unexpected stream data serial=%d proc=%d status=%d",
|
||||
msg->header.serial, msg->header.proc, msg->header.status);
|
||||
virNetMessageFree(msg);
|
||||
ret = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("Unexpected message type %u"),
|
||||
msg->header.type);
|
||||
goto error;
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
||||
error:
|
||||
ret = virNetServerProgramSendReplyError(prog, client, msg, &rerr, &msg->header);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* @server: the unlocked server object
|
||||
* @client: the unlocked client object
|
||||
* @msg: the complete incoming method call, with header already decoded
|
||||
*
|
||||
* This method is used to dispatch an message representing an
|
||||
* incoming method call from a client. It decodes the payload
|
||||
* to obtain method call arguments, invokves the method and
|
||||
* then sends a reply packet with the return values
|
||||
*
|
||||
* Returns 0 if the reply was sent, or -1 upon fatal error
|
||||
*/
|
||||
static int
|
||||
virNetServerProgramDispatchCall(virNetServerProgramPtr prog,
|
||||
virNetServerPtr server,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg)
|
||||
{
|
||||
char *arg = NULL;
|
||||
char *ret = NULL;
|
||||
int rv = -1;
|
||||
virNetServerProgramProcPtr dispatcher;
|
||||
virNetMessageError rerr;
|
||||
|
||||
memset(&rerr, 0, sizeof(rerr));
|
||||
|
||||
if (msg->header.status != VIR_NET_OK) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("Unexpected message status %u"),
|
||||
msg->header.status);
|
||||
goto error;
|
||||
}
|
||||
|
||||
dispatcher = virNetServerProgramGetProc(prog, msg->header.proc);
|
||||
|
||||
if (!dispatcher) {
|
||||
virNetError(VIR_ERR_RPC,
|
||||
_("unknown procedure: %d"),
|
||||
msg->header.proc);
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* If client is marked as needing auth, don't allow any RPC ops
|
||||
* which are except for authentication ones
|
||||
*/
|
||||
if (virNetServerClientNeedAuth(client) &&
|
||||
dispatcher->needAuth) {
|
||||
/* Explicitly *NOT* calling remoteDispatchAuthError() because
|
||||
we want back-compatability with libvirt clients which don't
|
||||
support the VIR_ERR_AUTH_FAILED error code */
|
||||
virNetError(VIR_ERR_RPC,
|
||||
"%s", _("authentication required"));
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (VIR_ALLOC_N(arg, dispatcher->arg_len) < 0) {
|
||||
virReportOOMError();
|
||||
goto error;
|
||||
}
|
||||
if (VIR_ALLOC_N(ret, dispatcher->ret_len) < 0) {
|
||||
virReportOOMError();
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (virNetMessageDecodePayload(msg, dispatcher->arg_filter, arg) < 0)
|
||||
goto error;
|
||||
|
||||
/*
|
||||
* When the RPC handler is called:
|
||||
*
|
||||
* - Server object is unlocked
|
||||
* - Client object is unlocked
|
||||
*
|
||||
* Without locking, it is safe to use:
|
||||
*
|
||||
* 'args and 'ret'
|
||||
*/
|
||||
rv = (dispatcher->func)(server, client, &msg->header, &rerr, arg, ret);
|
||||
|
||||
xdr_free(dispatcher->arg_filter, arg);
|
||||
|
||||
if (rv < 0)
|
||||
goto error;
|
||||
|
||||
/* Return header. We're re-using same message object, so
|
||||
* only need to tweak type/status fields */
|
||||
/*msg->header.prog = msg->header.prog;*/
|
||||
/*msg->header.vers = msg->header.vers;*/
|
||||
/*msg->header.proc = msg->header.proc;*/
|
||||
msg->header.type = VIR_NET_REPLY;
|
||||
/*msg->header.serial = msg->header.serial;*/
|
||||
msg->header.status = VIR_NET_OK;
|
||||
|
||||
if (virNetMessageEncodeHeader(msg) < 0) {
|
||||
xdr_free(dispatcher->ret_filter, ret);
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (virNetMessageEncodePayload(msg, dispatcher->ret_filter, ret) < 0) {
|
||||
xdr_free(dispatcher->ret_filter, ret);
|
||||
goto error;
|
||||
}
|
||||
|
||||
xdr_free(dispatcher->ret_filter, ret);
|
||||
VIR_FREE(arg);
|
||||
VIR_FREE(ret);
|
||||
|
||||
/* Put reply on end of tx queue to send out */
|
||||
return virNetServerClientSendMessage(client, msg);
|
||||
|
||||
error:
|
||||
/* Bad stuff (de-)serializing message, but we have an
|
||||
* RPC error message we can send back to the client */
|
||||
rv = virNetServerProgramSendReplyError(prog, client, msg, &rerr, &msg->header);
|
||||
|
||||
VIR_FREE(arg);
|
||||
VIR_FREE(ret);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
int virNetServerProgramSendStreamData(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
int procedure,
|
||||
int serial,
|
||||
const char *data,
|
||||
size_t len)
|
||||
{
|
||||
VIR_DEBUG("client=%p msg=%p data=%p len=%zu", client, msg, data, len);
|
||||
|
||||
/* Return header. We're reusing same message object, so
|
||||
* only need to tweak type/status fields */
|
||||
msg->header.prog = prog->program;
|
||||
msg->header.vers = prog->version;
|
||||
msg->header.proc = procedure;
|
||||
msg->header.type = VIR_NET_STREAM;
|
||||
msg->header.serial = serial;
|
||||
/*
|
||||
* NB
|
||||
* data != NULL + len > 0 => REMOTE_CONTINUE (Sending back data)
|
||||
* data != NULL + len == 0 => REMOTE_CONTINUE (Sending read EOF)
|
||||
* data == NULL => REMOTE_OK (Sending finish handshake confirmation)
|
||||
*/
|
||||
msg->header.status = data ? VIR_NET_CONTINUE : VIR_NET_OK;
|
||||
|
||||
if (virNetMessageEncodeHeader(msg) < 0)
|
||||
return -1;
|
||||
|
||||
if (data && len) {
|
||||
if (virNetMessageEncodePayloadRaw(msg, data, len) < 0)
|
||||
return -1;
|
||||
|
||||
VIR_DEBUG("Total %zu", msg->bufferOffset);
|
||||
}
|
||||
|
||||
return virNetServerClientSendMessage(client, msg);
|
||||
}
|
||||
|
||||
|
||||
void virNetServerProgramFree(virNetServerProgramPtr prog)
|
||||
{
|
||||
if (!prog)
|
||||
return;
|
||||
|
||||
VIR_DEBUG("prog=%p refs=%d", prog, prog->refs);
|
||||
|
||||
prog->refs--;
|
||||
if (prog->refs > 0)
|
||||
return;
|
||||
|
||||
VIR_FREE(prog);
|
||||
}
|
||||
105
src/rpc/virnetserverprogram.h
Normal file
105
src/rpc/virnetserverprogram.h
Normal file
@ -0,0 +1,105 @@
|
||||
/*
|
||||
* virnetserverprogram.h: generic network RPC server program
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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_PROGRAM_H__
|
||||
# define __VIR_NET_PROGRAM_H__
|
||||
|
||||
# include "virnetmessage.h"
|
||||
# include "virnetserverclient.h"
|
||||
|
||||
typedef struct _virNetServer virNetServer;
|
||||
typedef virNetServer *virNetServerPtr;
|
||||
|
||||
typedef struct _virNetServerService virNetServerService;
|
||||
typedef virNetServerService *virNetServerServicePtr;
|
||||
|
||||
typedef struct _virNetServerProgram virNetServerProgram;
|
||||
typedef virNetServerProgram *virNetServerProgramPtr;
|
||||
|
||||
typedef struct _virNetServerProgramProc virNetServerProgramProc;
|
||||
typedef virNetServerProgramProc *virNetServerProgramProcPtr;
|
||||
|
||||
typedef struct _virNetServerProgramErrorHandler virNetServerProgramErrorHander;
|
||||
typedef virNetServerProgramErrorHander *virNetServerProgramErrorHanderPtr;
|
||||
|
||||
typedef int (*virNetServerProgramDispatchFunc)(virNetServerPtr server,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessageHeaderPtr hdr,
|
||||
virNetMessageErrorPtr rerr,
|
||||
void *args,
|
||||
void *ret);
|
||||
|
||||
struct _virNetServerProgramProc {
|
||||
virNetServerProgramDispatchFunc func;
|
||||
size_t arg_len;
|
||||
xdrproc_t arg_filter;
|
||||
size_t ret_len;
|
||||
xdrproc_t ret_filter;
|
||||
bool needAuth;
|
||||
};
|
||||
|
||||
virNetServerProgramPtr virNetServerProgramNew(unsigned program,
|
||||
unsigned version,
|
||||
virNetServerProgramProcPtr procs,
|
||||
size_t nprocs);
|
||||
|
||||
int virNetServerProgramGetID(virNetServerProgramPtr prog);
|
||||
int virNetServerProgramGetVersion(virNetServerProgramPtr prog);
|
||||
|
||||
void virNetServerProgramRef(virNetServerProgramPtr prog);
|
||||
|
||||
int virNetServerProgramMatches(virNetServerProgramPtr prog,
|
||||
virNetMessagePtr msg);
|
||||
|
||||
int virNetServerProgramDispatch(virNetServerProgramPtr prog,
|
||||
virNetServerPtr server,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg);
|
||||
|
||||
int virNetServerProgramSendReplyError(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
virNetMessageErrorPtr rerr,
|
||||
virNetMessageHeaderPtr req);
|
||||
|
||||
int virNetServerProgramSendStreamError(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
virNetMessageErrorPtr rerr,
|
||||
int procedure,
|
||||
int serial);
|
||||
|
||||
int virNetServerProgramSendStreamData(virNetServerProgramPtr prog,
|
||||
virNetServerClientPtr client,
|
||||
virNetMessagePtr msg,
|
||||
int procedure,
|
||||
int serial,
|
||||
const char *data,
|
||||
size_t len);
|
||||
|
||||
void virNetServerProgramFree(virNetServerProgramPtr prog);
|
||||
|
||||
|
||||
|
||||
|
||||
#endif /* __VIR_NET_SERVER_PROGRAM_H__ */
|
||||
247
src/rpc/virnetserverservice.c
Normal file
247
src/rpc/virnetserverservice.c
Normal file
@ -0,0 +1,247 @@
|
||||
/*
|
||||
* virnetserverservice.c: generic network RPC server service
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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 "virnetserverservice.h"
|
||||
|
||||
#include "memory.h"
|
||||
#include "virterror_internal.h"
|
||||
|
||||
|
||||
#define VIR_FROM_THIS VIR_FROM_RPC
|
||||
|
||||
struct _virNetServerService {
|
||||
int refs;
|
||||
|
||||
size_t nsocks;
|
||||
virNetSocketPtr *socks;
|
||||
|
||||
int auth;
|
||||
bool readonly;
|
||||
|
||||
virNetTLSContextPtr tls;
|
||||
|
||||
virNetServerServiceDispatchFunc dispatchFunc;
|
||||
void *dispatchOpaque;
|
||||
};
|
||||
|
||||
|
||||
|
||||
static void virNetServerServiceAccept(virNetSocketPtr sock,
|
||||
int events ATTRIBUTE_UNUSED,
|
||||
void *opaque)
|
||||
{
|
||||
virNetServerServicePtr svc = opaque;
|
||||
virNetServerClientPtr client = NULL;
|
||||
virNetSocketPtr clientsock = NULL;
|
||||
|
||||
if (virNetSocketAccept(sock, &clientsock) < 0)
|
||||
goto error;
|
||||
|
||||
if (!clientsock) /* Connection already went away */
|
||||
goto cleanup;
|
||||
|
||||
if (!(client = virNetServerClientNew(clientsock,
|
||||
svc->auth,
|
||||
svc->readonly,
|
||||
svc->tls)))
|
||||
goto error;
|
||||
|
||||
if (!svc->dispatchFunc)
|
||||
goto error;
|
||||
|
||||
if (svc->dispatchFunc(svc, client, svc->dispatchOpaque) < 0)
|
||||
virNetServerClientClose(client);
|
||||
|
||||
virNetServerClientFree(client);
|
||||
|
||||
cleanup:
|
||||
return;
|
||||
|
||||
error:
|
||||
virNetSocketFree(clientsock);
|
||||
}
|
||||
|
||||
|
||||
virNetServerServicePtr virNetServerServiceNewTCP(const char *nodename,
|
||||
const char *service,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls)
|
||||
{
|
||||
virNetServerServicePtr svc;
|
||||
size_t i;
|
||||
|
||||
if (VIR_ALLOC(svc) < 0)
|
||||
goto no_memory;
|
||||
|
||||
svc->refs = 1;
|
||||
svc->auth = auth;
|
||||
svc->readonly = readonly;
|
||||
svc->tls = tls;
|
||||
if (tls)
|
||||
virNetTLSContextRef(tls);
|
||||
|
||||
if (virNetSocketNewListenTCP(nodename,
|
||||
service,
|
||||
&svc->socks,
|
||||
&svc->nsocks) < 0)
|
||||
goto error;
|
||||
|
||||
for (i = 0 ; i < svc->nsocks ; i++) {
|
||||
if (virNetSocketListen(svc->socks[i]) < 0)
|
||||
goto error;
|
||||
|
||||
/* IO callback is initially disabled, until we're ready
|
||||
* to deal with incoming clients */
|
||||
if (virNetSocketAddIOCallback(svc->socks[i],
|
||||
0,
|
||||
virNetServerServiceAccept,
|
||||
svc) < 0)
|
||||
goto error;
|
||||
}
|
||||
|
||||
|
||||
return svc;
|
||||
|
||||
no_memory:
|
||||
virReportOOMError();
|
||||
error:
|
||||
virNetServerServiceFree(svc);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
|
||||
mode_t mask,
|
||||
gid_t grp,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls)
|
||||
{
|
||||
virNetServerServicePtr svc;
|
||||
int i;
|
||||
|
||||
if (VIR_ALLOC(svc) < 0)
|
||||
goto no_memory;
|
||||
|
||||
svc->refs = 1;
|
||||
svc->auth = auth;
|
||||
svc->readonly = readonly;
|
||||
svc->tls = tls;
|
||||
if (tls)
|
||||
virNetTLSContextRef(tls);
|
||||
|
||||
svc->nsocks = 1;
|
||||
if (VIR_ALLOC_N(svc->socks, svc->nsocks) < 0)
|
||||
goto no_memory;
|
||||
|
||||
if (virNetSocketNewListenUNIX(path,
|
||||
mask,
|
||||
grp,
|
||||
&svc->socks[0]) < 0)
|
||||
goto error;
|
||||
|
||||
for (i = 0 ; i < svc->nsocks ; i++) {
|
||||
if (virNetSocketListen(svc->socks[i]) < 0)
|
||||
goto error;
|
||||
|
||||
/* IO callback is initially disabled, until we're ready
|
||||
* to deal with incoming clients */
|
||||
if (virNetSocketAddIOCallback(svc->socks[i],
|
||||
0,
|
||||
virNetServerServiceAccept,
|
||||
svc) < 0)
|
||||
goto error;
|
||||
}
|
||||
|
||||
|
||||
return svc;
|
||||
|
||||
no_memory:
|
||||
virReportOOMError();
|
||||
error:
|
||||
virNetServerServiceFree(svc);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
int virNetServerServiceGetAuth(virNetServerServicePtr svc)
|
||||
{
|
||||
return svc->auth;
|
||||
}
|
||||
|
||||
|
||||
bool virNetServerServiceIsReadonly(virNetServerServicePtr svc)
|
||||
{
|
||||
return svc->readonly;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerServiceRef(virNetServerServicePtr svc)
|
||||
{
|
||||
svc->refs++;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerServiceSetDispatcher(virNetServerServicePtr svc,
|
||||
virNetServerServiceDispatchFunc func,
|
||||
void *opaque)
|
||||
{
|
||||
svc->dispatchFunc = func;
|
||||
svc->dispatchOpaque = opaque;
|
||||
}
|
||||
|
||||
|
||||
void virNetServerServiceFree(virNetServerServicePtr svc)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!svc)
|
||||
return;
|
||||
|
||||
svc->refs--;
|
||||
if (svc->refs > 0)
|
||||
return;
|
||||
|
||||
for (i = 0 ; i < svc->nsocks ; i++)
|
||||
virNetSocketFree(svc->socks[i]);
|
||||
VIR_FREE(svc->socks);
|
||||
|
||||
virNetTLSContextFree(svc->tls);
|
||||
|
||||
VIR_FREE(svc);
|
||||
}
|
||||
|
||||
void virNetServerServiceToggle(virNetServerServicePtr svc,
|
||||
bool enabled)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0 ; i < svc->nsocks ; i++)
|
||||
virNetSocketUpdateIOCallback(svc->socks[i],
|
||||
enabled ?
|
||||
VIR_EVENT_HANDLE_READABLE :
|
||||
0);
|
||||
}
|
||||
65
src/rpc/virnetserverservice.h
Normal file
65
src/rpc/virnetserverservice.h
Normal file
@ -0,0 +1,65 @@
|
||||
/*
|
||||
* virnetserverservice.h: generic network RPC server service
|
||||
*
|
||||
* Copyright (C) 2006-2011 Red Hat, Inc.
|
||||
* Copyright (C) 2006 Daniel P. Berrange
|
||||
*
|
||||
* 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_SERVICE_H__
|
||||
# define __VIR_NET_SERVER_SERVICE_H__
|
||||
|
||||
# include "virnetserverprogram.h"
|
||||
|
||||
enum {
|
||||
VIR_NET_SERVER_SERVICE_AUTH_NONE = 0,
|
||||
VIR_NET_SERVER_SERVICE_AUTH_SASL,
|
||||
VIR_NET_SERVER_SERVICE_AUTH_POLKIT,
|
||||
};
|
||||
|
||||
typedef int (*virNetServerServiceDispatchFunc)(virNetServerServicePtr svc,
|
||||
virNetServerClientPtr client,
|
||||
void *opaque);
|
||||
|
||||
virNetServerServicePtr virNetServerServiceNewTCP(const char *nodename,
|
||||
const char *service,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls);
|
||||
virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
|
||||
mode_t mask,
|
||||
gid_t grp,
|
||||
int auth,
|
||||
bool readonly,
|
||||
virNetTLSContextPtr tls);
|
||||
|
||||
int virNetServerServiceGetAuth(virNetServerServicePtr svc);
|
||||
bool virNetServerServiceIsReadonly(virNetServerServicePtr svc);
|
||||
|
||||
void virNetServerServiceRef(virNetServerServicePtr svc);
|
||||
|
||||
void virNetServerServiceSetDispatcher(virNetServerServicePtr svc,
|
||||
virNetServerServiceDispatchFunc func,
|
||||
void *opaque);
|
||||
|
||||
void virNetServerServiceFree(virNetServerServicePtr svc);
|
||||
|
||||
void virNetServerServiceToggle(virNetServerServicePtr svc,
|
||||
bool enabled);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user