static struct cntr *setup_cntr(void)
{
struct cntr *cntr;
fail_unless((cntr=cntr_alloc())!=NULL);
fail_unless(!cntr_init(cntr, "testclient"));
return cntr;
}
int cstat_init_with_cntr(struct cstat *cstat,
const char *name, const char *clientconfdir)
{
if(cstat_init(cstat, name, clientconfdir)
|| !(cstat->cntr=cntr_alloc())
|| cntr_init(cstat->cntr, name))
return -1;
return 0;
}
static int run_child(int *cfd, SSL_CTX *ctx, struct sockaddr_storage *addr,
int status_wfd, int status_rfd, const char *conffile, int forking)
{
int ret=-1;
int ca_ret=0;
SSL *ssl=NULL;
BIO *sbio=NULL;
struct conf **confs=NULL;
struct conf **cconfs=NULL;
struct cntr *cntr=NULL;
struct async *as=NULL;
const char *cname=NULL;
struct asfd *asfd=NULL;
int is_status_server=0;
if(!(confs=confs_alloc())
|| !(cconfs=confs_alloc()))
goto end;
set_peer_env_vars(addr);
// Reload global config, in case things have changed. This means that
// the server does not need to be restarted for most conf changes.
confs_init(confs);
confs_init(cconfs);
if(conf_load_global_only(conffile, confs)) goto end;
// Hack to keep forking turned off if it was specified as off on the
// command line.
if(!forking) set_int(confs[OPT_FORK], 0);
if(!(sbio=BIO_new_socket(*cfd, BIO_NOCLOSE))
|| !(ssl=SSL_new(ctx)))
{
logp("There was a problem joining ssl to the socket\n");
goto end;
}
SSL_set_bio(ssl, sbio, sbio);
/* Do not try to check peer certificate straight away.
Clients can send a certificate signing request when they have
no certificate. */
SSL_set_verify(ssl, SSL_VERIFY_PEER
/* | SSL_VERIFY_FAIL_IF_NO_PEER_CERT */, 0);
if(ssl_do_accept(ssl))
goto end;
if(!(as=async_alloc())
|| as->init(as, 0)
|| !(asfd=setup_asfd_ssl(as, "main socket", cfd, ssl)))
goto end;
asfd->set_timeout(asfd, get_int(confs[OPT_NETWORK_TIMEOUT]));
asfd->ratelimit=get_float(confs[OPT_RATELIMIT]);
if(authorise_server(as->asfd, confs, cconfs)
|| !(cname=get_string(cconfs[OPT_CNAME])) || !*cname)
{
// Add an annoying delay in case they are tempted to
// try repeatedly.
log_and_send(as->asfd, "unable to authorise on server");
sleep(1);
goto end;
}
if(!get_int(cconfs[OPT_ENABLED]))
{
log_and_send(as->asfd, "client not enabled on server");
sleep(1);
goto end;
}
// Set up counters. Have to wait until here to get cname.
if(!(cntr=cntr_alloc())
|| cntr_init(cntr, cname))
goto end;
set_cntr(confs[OPT_CNTR], cntr);
set_cntr(cconfs[OPT_CNTR], cntr);
/* At this point, the client might want to get a new certificate
signed. Clients on 1.3.2 or newer can do this. */
if((ca_ret=ca_server_maybe_sign_client_cert(as->asfd, confs, cconfs))<0)
{
logp("Error signing client certificate request for %s\n",
cname);
goto end;
}
else if(ca_ret>0)
{
// Certificate signed and sent back.
// Everything is OK, but we will close this instance
// so that the client can start again with a new
// connection and its new certificates.
logp("Signed and returned client certificate request for %s\n",
cname);
ret=0;
goto end;
}
/* Now it is time to check the certificate. */
if(ssl_check_cert(ssl, confs, cconfs))
{
log_and_send(as->asfd, "check cert failed on server");
goto end;
}
if(status_rfd>=0)
{
is_status_server=1;
if(!setup_asfd(as, "status server parent socket", &status_rfd))
goto end;
}
ret=child(as, is_status_server, status_wfd, confs, cconfs);
end:
*cfd=-1;
if(as && asfd_flush_asio(as->asfd))
ret=-1;
async_asfd_free_all(&as); // This closes cfd for us.
logp("exit child\n");
if(cntr) cntr_free(&cntr);
if(confs)
{
set_cntr(confs[OPT_CNTR], NULL);
confs_free(&confs);
}
if(cconfs)
{
set_cntr(cconfs[OPT_CNTR], NULL);
confs_free(&cconfs);
}
return ret;
}
static enum cliret do_client(struct conf *conf,
enum action action, int vss_restore, int json)
{
enum cliret ret=CLIENT_OK;
int rfd=-1;
int resume=0;
SSL *ssl=NULL;
SSL_CTX *ctx=NULL;
struct cntr *cntr=NULL;
char *incexc=NULL;
long name_max=0;
enum action act=action;
struct async *as=NULL;
struct asfd *asfd=NULL;
// as->settimers(0, 100);
logp("begin client\n");
if(!(cntr=cntr_alloc()) || cntr_init(cntr, conf->cname)) goto error;
conf->cntr=cntr;
if(act!=ACTION_ESTIMATE
&& ssl_setup(&rfd, &ssl, &ctx, conf))
goto error;
if(!(as=async_alloc())
|| !(asfd=asfd_alloc())
|| as->init(as, act==ACTION_ESTIMATE)
|| asfd->init(asfd, as, rfd, ssl, conf))
goto end;
as->add_asfd(as, asfd);
// Set quality of service bits on backup packets.
if(act==ACTION_BACKUP
|| act==ACTION_BACKUP_TIMED
|| act==ACTION_TIMER_CHECK)
as->asfd->set_bulk_packets(as->asfd);
if(act!=ACTION_ESTIMATE)
{
if((ret=initial_comms(as, &act, &incexc, &name_max, conf)))
goto end;
}
rfd=-1;
switch(act)
{
case ACTION_BACKUP:
ret=backup_wrapper(asfd, act, "backupphase1",
incexc, resume, name_max, conf);
break;
case ACTION_BACKUP_TIMED:
ret=backup_wrapper(asfd, act, "backupphase1timed",
incexc, resume, name_max, conf);
break;
case ACTION_TIMER_CHECK:
ret=backup_wrapper(asfd, act, "backupphase1timedcheck",
incexc, resume, name_max, conf);
break;
case ACTION_RESTORE:
case ACTION_VERIFY:
ret=restore_wrapper(asfd, act, vss_restore, conf);
break;
case ACTION_ESTIMATE:
if(do_backup_client(asfd, conf, act, name_max, 0))
goto error;
break;
case ACTION_DELETE:
if(do_delete_client(asfd, conf)) goto error;
break;
case ACTION_LIST:
case ACTION_LONG_LIST:
default:
if(do_list_client(asfd, conf, act, json)) goto error;
break;
}
goto end;
error:
ret=CLIENT_ERROR;
end:
close_fd(&rfd);
async_free(&as);
asfd_free(&asfd);
if(ctx) ssl_destroy_ctx(ctx);
if(incexc) free(incexc);
conf->cntr=NULL;
if(cntr) cntr_free(&cntr);
//logp("end client\n");
return ret;
}
static enum cliret do_client(struct conf **confs,
enum action action, int vss_restore)
{
enum cliret ret=CLIENT_OK;
int rfd=-1;
SSL *ssl=NULL;
SSL_CTX *ctx=NULL;
struct cntr *cntr=NULL;
char *incexc=NULL;
enum action act=action;
struct async *as=NULL;
struct asfd *asfd=NULL;
// as->settimers(0, 100);
// logp("begin client\n");
// logp("action %d\n", action);
// Status monitor forks a child process instead of connecting to
// the server directly.
if(action==ACTION_STATUS
|| action==ACTION_STATUS_SNAPSHOT)
{
#ifdef HAVE_WIN32
logp("Status mode not implemented on Windows.\n");
goto error;
#endif
if(status_client_ncurses_init(act)
|| status_client_ncurses(confs)) ret=CLIENT_ERROR;
goto end;
}
if(!(cntr=cntr_alloc())
|| cntr_init(cntr, get_string(confs[OPT_CNAME]))) goto error;
set_cntr(confs[OPT_CNTR], cntr);
if(act!=ACTION_ESTIMATE
&& ssl_setup(&rfd, &ssl, &ctx, action, confs))
goto could_not_connect;
if(!(as=async_alloc())
|| !(asfd=asfd_alloc())
|| as->init(as, act==ACTION_ESTIMATE)
|| asfd->init(asfd, "main socket", as, rfd, ssl,
ASFD_STREAM_STANDARD, confs))
goto end;
as->asfd_add(as, asfd);
// Set quality of service bits on backup packets.
if(act==ACTION_BACKUP
|| act==ACTION_BACKUP_TIMED
|| act==ACTION_TIMER_CHECK)
as->asfd->set_bulk_packets(as->asfd);
if(act!=ACTION_ESTIMATE)
{
if((ret=initial_comms(as, &act, &incexc, confs)))
goto end;
}
rfd=-1;
switch(act)
{
case ACTION_BACKUP:
ret=backup_wrapper(asfd, act, "backupphase1",
incexc, confs);
break;
case ACTION_BACKUP_TIMED:
ret=backup_wrapper(asfd, act, "backupphase1timed",
incexc, confs);
break;
case ACTION_TIMER_CHECK:
ret=backup_wrapper(asfd, act, "backupphase1timedcheck",
incexc, confs);
break;
case ACTION_RESTORE:
case ACTION_VERIFY:
ret=restore_wrapper(asfd, act, vss_restore, confs);
break;
case ACTION_ESTIMATE:
if(do_backup_client(asfd, confs, act, 0))
goto error;
break;
case ACTION_DELETE:
if(do_delete_client(asfd, confs)) goto error;
break;
case ACTION_MONITOR:
if(do_monitor_client(asfd, confs)) goto error;
break;
case ACTION_DIFF:
case ACTION_DIFF_LONG:
/*
if(!strcmp(get_string(confs[OPT_BACKUP2]), "n"))
// Do a phase1 scan and diff that.
ret=backup_wrapper(asfd, act,
"backupphase1diff", incexc, confs);
else
*/
// Diff two backups that already exist.
// Fall through, the list code is all we need
// for simple diffs on the client side.
case ACTION_LIST:
case ACTION_LIST_LONG:
default:
if(do_list_client(asfd, act, confs)) goto error;
break;
}
if(asfd_flush_asio(asfd))
ret=CLIENT_ERROR;
goto end;
error:
ret=CLIENT_ERROR; goto end;
could_not_connect:
ret=CLIENT_COULD_NOT_CONNECT;
end:
close_fd(&rfd);
async_free(&as);
asfd_free(&asfd);
if(ctx) ssl_destroy_ctx(ctx);
free_w(&incexc);
set_cntr(confs[OPT_CNTR], NULL);
cntr_free(&cntr);
//logp("end client\n");
return ret;
}
static int run_child(int *rfd, int *cfd, SSL_CTX *ctx,
const char *conffile, int forking)
{
int ret=-1;
int ca_ret=0;
SSL *ssl=NULL;
BIO *sbio=NULL;
struct conf *conf=NULL;
struct conf *cconf=NULL;
struct cntr *cntr=NULL;
struct async *as=NULL;
struct asfd *asfd=NULL;
if(!(conf=conf_alloc())
|| !(cconf=conf_alloc()))
goto end;
if(forking) close_fd(rfd);
// Reload global config, in case things have changed. This means that
// the server does not need to be restarted for most conf changes.
conf_init(conf);
conf_init(cconf);
if(conf_load(conffile, conf, 1)) goto end;
// Hack to keep forking turned off if it was specified as off on the
// command line.
if(!forking) conf->forking=0;
if(!(sbio=BIO_new_socket(*cfd, BIO_NOCLOSE))
|| !(ssl=SSL_new(ctx)))
{
logp("There was a problem joining ssl to the socket\n");
goto end;
}
SSL_set_bio(ssl, sbio, sbio);
/* Do not try to check peer certificate straight away.
Clients can send a certificate signing request when they have
no certificate. */
SSL_set_verify(ssl, SSL_VERIFY_PEER
/* | SSL_VERIFY_FAIL_IF_NO_PEER_CERT */, 0);
if(SSL_accept(ssl)<=0)
{
char buf[256]="";
ERR_error_string_n(ERR_get_error(), buf, sizeof(buf));
logp("SSL_accept: %s\n", buf);
goto end;
}
if(!(as=async_alloc())
|| !(asfd=asfd_alloc())
|| as->init(as, 0)
|| asfd->init(asfd, "main socket", as, *cfd, ssl, conf))
goto end;
as->asfd_add(as, asfd);
if(authorise_server(asfd, conf, cconf)
|| !cconf->cname || !*(cconf->cname))
{
// Add an annoying delay in case they are tempted to
// try repeatedly.
log_and_send(asfd, "unable to authorise on server");
sleep(1);
goto end;
}
// Set up counters. Have to wait until here to get cname.
if(!(cntr=cntr_alloc())
|| cntr_init(cntr, cconf->cname))
goto end;
conf->cntr=cntr;
cconf->cntr=cntr;
/* At this point, the client might want to get a new certificate
signed. Clients on 1.3.2 or newer can do this. */
if((ca_ret=ca_server_maybe_sign_client_cert(asfd, conf, cconf))<0)
{
logp("Error signing client certificate request for %s\n",
cconf->cname);
goto end;
}
else if(ca_ret>0)
{
// Certificate signed and sent back.
// Everything is OK, but we will close this instance
// so that the client can start again with a new
// connection and its new certificates.
logp("Signed and returned client certificate request for %s\n",
cconf->cname);
ret=0;
goto end;
}
/* Now it is time to check the certificate. */
if(ssl_check_cert(ssl, cconf))
{
log_and_send(asfd, "check cert failed on server");
goto end;
}
set_non_blocking(*cfd);
ret=child(as, conf, cconf);
end:
*cfd=-1;
async_free(&as);
asfd_free(&asfd); // This closes cfd for us.
logp("exit child\n");
if(cntr) cntr_free(&cntr);
if(conf) conf_free(conf);
if(cconf) conf_free(cconf);
return ret;
}
