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yate/modules/zapchan.cpp

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/**
* zapchan.cpp
* This file is part of the YATE Project http://YATE.null.ro
*
* Zapata telephony driver
*
* Yet Another Telephony Engine - a fully featured software PBX and IVR
* Copyright (C) 2004 Null Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
extern "C" {
#include <libpri.h>
#include <linux/zaptel.h>
extern int q931_setup(struct pri *pri, q931_call *c, struct pri_sr *req);
};
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <telengine.h>
#include <telephony.h>
#include <stdio.h>
using namespace TelEngine;
#define SIG_EM ZT_SIG_EM
#define SIG_EMWINK (0x10000 | ZT_SIG_EM)
#define SIG_FEATD (0x20000 | ZT_SIG_EM)
#define SIG_FEATDMF (0x40000 | ZT_SIG_EM)
#define SIG_FEATB (0x80000 | ZT_SIG_EM)
#define SIG_FXSLS ZT_SIG_FXSLS
#define SIG_FXSGS ZT_SIG_FXSGS
#define SIG_FXSKS ZT_SIG_FXSKS
#define SIG_FXOLS ZT_SIG_FXOLS
#define SIG_FXOGS ZT_SIG_FXOGS
#define SIG_FXOKS ZT_SIG_FXOKS
#define SIG_PRI ZT_SIG_CLEAR
#define SIG_R2 ZT_SIG_CAS
#define SIG_SF ZT_SIG_SF
#define SIG_SFWINK (0x10000 | ZT_SIG_SF)
#define SIG_SF_FEATD (0x20000 | ZT_SIG_SF)
#define SIG_SF_FEATDMF (0x40000 | ZT_SIG_SF)
#define SIG_SF_FEATB (0x80000 | ZT_SIG_SF)
static int s_buflen = 480;
static int zt_get_event(int fd)
{
/* Avoid the silly zt_getevent which ignores a bunch of events */
int j = 0;
if (::ioctl(fd, ZT_GETEVENT, &j) == -1)
return -1;
return j;
}
#if 0
static int zt_wait_event(int fd)
{
/* Avoid the silly zt_waitevent which ignores a bunch of events */
int i = ZT_IOMUX_SIGEVENT, j = 0;
if (::ioctl(fd, ZT_IOMUX, &i) == -1)
return -1;
if (::ioctl(fd, ZT_GETEVENT, &j) == -1)
return -1;
return j;
}
#endif
static int zt_open(int channo, bool subchan,unsigned int blksize)
{
Debug("ZapChan",DebugInfo,"Open zap channel=%d with block size=%d",channo,blksize);
int fd = ::open(subchan ? "/dev/zap/pseudo" : "/dev/zap/channel",O_RDWR|O_NONBLOCK);
if (fd < 0) {
Debug("ZapChan",DebugGoOn,"Failed to open zap device: error %d: %s",errno,::strerror(errno));
return -1;
}
if (channo) {
if (::ioctl(fd, subchan ? ZT_CHANNO : ZT_SPECIFY, &channo)) {
Debug("ZapChan",DebugGoOn,"Failed to specify chan %d: error %d: %s",channo,errno,::strerror(errno));
::close(fd);
return -1;
}
}
if (blksize) {
if (::ioctl(fd, ZT_SET_BLOCKSIZE, &blksize) == -1) {
Debug("ZapChan",DebugGoOn,"Failed to set block size %d: error %d: %s",blksize,errno,::strerror(errno));
::close(fd);
return -1;
}
}
return fd;
}
static bool zt_set_law(int fd, int law)
{
if (law < 0) {
int linear = 1;
if (::ioctl(fd, ZT_SETLINEAR, &linear) != -1)
return true;
}
if (::ioctl(fd, ZT_SETLAW, &law) != -1)
return true;
DDebug("ZapChan",DebugInfo,"Failed to set law %d: error %d: %s",law,errno,::strerror(errno));
return false;
}
static void zt_close(int fd)
{
if (fd != -1)
::close(fd);
}
#if 0
static const char *pri_alarm(int alarm)
{
if (!alarm)
return "No alarm";
if (alarm & ZT_ALARM_RED)
return "Red Alarm";
if (alarm & ZT_ALARM_YELLOW)
return "Yellow Alarm";
if (alarm & ZT_ALARM_BLUE)
return "Blue Alarm";
if (alarm & ZT_ALARM_RECOVER)
return "Recovering";
if (alarm & ZT_ALARM_LOOPBACK)
return "Loopback";
if (alarm & ZT_ALARM_NOTOPEN)
return "Not Open";
return "Unknown status";
}
static const char *sig_names(int sig)
{
switch (sig) {
case SIG_EM:
return "E & M Immediate";
case SIG_EMWINK:
return "E & M Wink";
case SIG_FEATD:
return "Feature Group D (DTMF)";
case SIG_FEATDMF:
return "Feature Group D (MF)";
case SIG_FEATB:
return "Feature Group B (MF)";
case SIG_FXSLS:
return "FXS Loopstart";
case SIG_FXSGS:
return "FXS Groundstart";
case SIG_FXSKS:
return "FXS Kewlstart";
case SIG_FXOLS:
return "FXO Loopstart";
case SIG_FXOGS:
return "FXO Groundstart";
case SIG_FXOKS:
return "FXO Kewlstart";
case SIG_PRI:
return "PRI Signalling";
case SIG_R2:
return "R2 Signalling";
case SIG_SF:
return "SF (Tone) Signalling Immediate";
case SIG_SFWINK:
return "SF (Tone) Signalling Wink";
case SIG_SF_FEATD:
return "SF (Tone) Signalling with Feature Group D (DTMF)";
case SIG_SF_FEATDMF:
return "SF (Tone) Signallong with Feature Group D (MF)";
case SIG_SF_FEATB:
return "SF (Tone) Signalling with Feature Group B (MF)";
case 0:
return "Pseudo Signalling";
default:
static char buf[64];
::sprintf(buf,"Unknown signalling %d",sig);
return buf;
}
}
#endif
static void pri_err_cb(char *s)
{
Debug("PRI",DebugWarn,"%s",s);
}
static void pri_msg_cb(char *s)
{
Debug("PRI",DebugInfo,"%s",s);
}
/* Switch types */
static TokenDict dict_str2switch[] = {
{ "unknown", PRI_SWITCH_UNKNOWN },
{ "ni2", PRI_SWITCH_NI2 },
{ "dms100", PRI_SWITCH_DMS100 },
{ "lucent5e", PRI_SWITCH_LUCENT5E },
{ "at&t4ess", PRI_SWITCH_ATT4ESS },
{ "euroisdn_e1", PRI_SWITCH_EUROISDN_E1 },
{ "euroisdn_t1", PRI_SWITCH_EUROISDN_T1 },
{ "ni1", PRI_SWITCH_NI1 },
{ 0, -1 }
};
#if 0
/* Numbering plan identifier */
static TokenDict dict_str2nplan[] = {
{ "unknown", PRI_NPI_UNKNOWN },
{ "e164", PRI_NPI_E163_E164 },
{ "x121", PRI_NPI_X121 },
{ "f69", PRI_NPI_F69 },
{ "national", PRI_NPI_NATIONAL },
{ "private", PRI_NPI_PRIVATE },
{ "reserved", PRI_NPI_RESERVED },
{ 0, -1 }
};
/* Type of number */
static TokenDict dict_str2ntype[] = {
{ "unknown", PRI_TON_UNKNOWN },
{ "international", PRI_TON_INTERNATIONAL },
{ "national", PRI_TON_NATIONAL },
{ "net_specific", PRI_TON_NET_SPECIFIC },
{ "subscriber", PRI_TON_SUBSCRIBER },
{ "abbreviated", PRI_TON_ABBREVIATED },
{ "reserved", PRI_TON_RESERVED },
{ 0, -1 }
};
#endif
/* Dialing plan */
static TokenDict dict_str2dplan[] = {
{ "unknown", PRI_UNKNOWN },
{ "international", PRI_INTERNATIONAL_ISDN },
{ "national", PRI_NATIONAL_ISDN },
{ "local", PRI_LOCAL_ISDN },
{ "private", PRI_PRIVATE },
{ 0, -1 }
};
/* Presentation */
static TokenDict dict_str2pres[] = {
{ "allow_user_not_screened", PRES_ALLOWED_USER_NUMBER_NOT_SCREENED },
{ "allow_user_passed", PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN },
{ "allow_user_failed", PRES_ALLOWED_USER_NUMBER_FAILED_SCREEN },
{ "allow_network", PRES_ALLOWED_NETWORK_NUMBER },
{ "prohibit_user_not_screened", PRES_PROHIB_USER_NUMBER_NOT_SCREENED },
{ "prohibit_user_passed", PRES_PROHIB_USER_NUMBER_PASSED_SCREEN },
{ "prohibit_user_failed", PRES_PROHIB_USER_NUMBER_FAILED_SCREEN },
{ "prohibit_network", PRES_PROHIB_NETWORK_NUMBER },
{ "not_available", PRES_NUMBER_NOT_AVAILABLE },
{ 0, -1 }
};
#ifdef PRI_NSF_NONE
#define YATE_NSF_DEFAULT PRI_NSF_NONE
#else
#define YATE_NSF_DEFAULT -1
#endif
/* Network Specific Facilities (AT&T) */
static TokenDict dict_str2nsf[] = {
#ifdef PRI_NSF_NONE
{ "none", PRI_NSF_NONE },
{ "sid_preferred", PRI_NSF_SID_PREFERRED },
{ "ani_preferred", PRI_NSF_ANI_PREFERRED },
{ "sid_only", PRI_NSF_SID_ONLY },
{ "ani_only", PRI_NSF_ANI_ONLY },
{ "call_assoc_tsc", PRI_NSF_CALL_ASSOC_TSC },
{ "notif_catsc_clearing", PRI_NSF_NOTIF_CATSC_CLEARING },
{ "operator", PRI_NSF_OPERATOR },
{ "pcco", PRI_NSF_PCCO },
{ "sdn", PRI_NSF_SDN },
{ "toll_free_megacom", PRI_NSF_TOLL_FREE_MEGACOM },
{ "megacom", PRI_NSF_MEGACOM },
{ "accunet", PRI_NSF_ACCUNET },
{ "long_distance", PRI_NSF_LONG_DISTANCE_SERVICE },
{ "international_toll_free", PRI_NSF_INTERNATIONAL_TOLL_FREE },
{ "at&t_multiquest", PRI_NSF_ATT_MULTIQUEST },
{ "call_redirection", PRI_NSF_CALL_REDIRECTION_SERVICE },
#endif
{ 0, -1 }
};
/* Layer 1 formats */
static TokenDict dict_str2law[] = {
{ "mulaw", PRI_LAYER_1_ULAW },
{ "alaw", PRI_LAYER_1_ALAW },
{ "g721", PRI_LAYER_1_G721 },
{ 0, -1 }
};
/* Zaptel formats */
static TokenDict dict_str2ztlaw[] = {
{ "slin", -1 },
{ "default", ZT_LAW_DEFAULT },
{ "mulaw", ZT_LAW_MULAW },
{ "alaw", ZT_LAW_ALAW },
{ 0, -2 }
};
class ZapChan;
class PriSpan : public GenObject, public Thread
{
public:
static PriSpan *create(int span, int chan1, int nChans, int dChan, bool isNet,
int switchType, int dialPlan, int presentation,
bool overlapDial, int nsf = YATE_NSF_DEFAULT);
virtual ~PriSpan();
virtual void run();
inline struct pri *pri()
{ return m_pri; }
inline int span() const
{ return m_span; }
inline bool belongs(int chan) const
{ return (chan >= m_offs) && (chan < m_offs+m_nchans); }
inline int chan1() const
{ return m_offs; }
inline int chans() const
{ return m_nchans; }
inline int dplan() const
{ return m_dplan; }
inline int pres() const
{ return m_pres; }
inline bool outOfOrder() const
{ return !m_ok; }
int findEmptyChan(int first = 0, int last = 65535) const;
ZapChan *getChan(int chan) const;
void idle();
static unsigned long long restartPeriod;
static bool dumpEvents;
private:
PriSpan(struct pri *_pri, int span, int first, int chans, int dchan, int fd, int dplan, int pres);
static struct pri *makePri(int fd, int dchan, int nettype, int swtype, bool overlapDial, int nsf);
void handleEvent(pri_event &ev);
bool validChan(int chan) const;
void restartChan(int chan, bool outgoing, bool force = false);
void ringChan(int chan, pri_event_ring &ev);
void infoChan(int chan, pri_event_ring &ev);
void hangupChan(int chan,pri_event_hangup &ev);
void ackChan(int chan);
void answerChan(int chan);
void proceedingChan(int chan);
int m_span;
int m_offs;
int m_nchans;
int m_fd;
int m_dplan;
int m_pres;
struct pri *m_pri;
unsigned long long m_restart;
ZapChan **m_chans;
bool m_ok;
};
class ZapChan : public DataEndpoint
{
public:
ZapChan(PriSpan *parent, int chan, unsigned int bufsize);
virtual ~ZapChan();
virtual void disconnected(bool final, const char *reason);
virtual bool nativeConnect(DataEndpoint *peer);
inline PriSpan *span() const
{ return m_span; }
inline int chan() const
{ return m_chan; }
inline int absChan() const
{ return m_abschan; }
inline bool inUse() const
{ return (m_ring || m_call); }
void ring(q931_call *call = 0);
void hangup(int cause = PRI_CAUSE_INVALID_MSG_UNSPECIFIED);
void sendDigit(char digit);
void gotDigits(const char *digits);
bool call(Message &msg, const char *called = 0);
bool answer();
void answered();
void idle();
void restart(bool outgoing = false);
bool open(int defLaw = -1);
void close();
inline void setTimeout(unsigned long long tout)
{ m_timeout = tout ? Time::now()+tout : 0; }
const char *status() const;
inline int fd() const
{ return m_fd; }
inline int law() const
{ return m_law; }
const String& id() const
{ return m_id; }
inline void setTarget(const char *target = 0)
{ m_targetid = target; }
private:
PriSpan *m_span;
int m_chan;
bool m_ring;
unsigned long long m_timeout;
q931_call *m_call;
unsigned int m_bufsize;
int m_abschan;
int m_fd;
int m_law;
bool m_isdn;
String m_id;
String m_targetid;
};
class ZapSource : public ThreadedSource
{
public:
ZapSource(ZapChan *owner,unsigned int bufsize)
: m_owner(owner), m_bufsize(bufsize), m_buf(0,bufsize)
{
Debug(DebugAll,"ZapSource::ZapSource(%p) [%p]",owner,this);
start("ZapSource");
}
~ZapSource()
{ Debug(DebugAll,"ZapSource::~ZapSource() [%p]",this); }
virtual void run();
private:
ZapChan *m_owner;
unsigned int m_bufsize;
DataBlock m_buf;
DataBlock m_data;
};
class ZapConsumer : public DataConsumer
{
public:
ZapConsumer(ZapChan *owner,unsigned int bufsize)
: m_owner(owner), m_bufsize(bufsize)
{ Debug(DebugAll,"ZapConsumer::ZapConsumer(%p) [%p]",owner,this); }
~ZapConsumer()
{ Debug(DebugAll,"ZapConsumer::~ZapConsumer() [%p]",this); }
virtual void Consume(const DataBlock &data, unsigned long timeDelta);
private:
ZapChan *m_owner;
unsigned int m_bufsize;
DataBlock m_buffer;
};
class ZapHandler : public MessageHandler
{
public:
ZapHandler() : MessageHandler("call.execute") { }
virtual bool received(Message &msg);
};
class ZapDropper : public MessageHandler
{
public:
ZapDropper() : MessageHandler("call.drop") { }
virtual bool received(Message &msg);
};
class ZapDTMF : public MessageHandler
{
public:
ZapDTMF() : MessageHandler("chan.dtmf") { }
virtual bool received(Message &msg);
};
class StatusHandler : public MessageHandler
{
public:
StatusHandler() : MessageHandler("engine.status") { }
virtual bool received(Message &msg);
};
class ZaptelPlugin : public Plugin
{
friend class PriSpan;
friend class ZapHandler;
public:
ZaptelPlugin();
virtual ~ZaptelPlugin();
virtual void initialize();
virtual bool isBusy() const;
PriSpan *findSpan(int chan);
ZapChan *findChan(const char *id);
ZapChan *findChan(int first = -1, int last = -1);
ObjList m_spans;
Mutex mutex;
};
ZaptelPlugin zplugin;
unsigned long long PriSpan::restartPeriod = 0;
bool PriSpan::dumpEvents = false;
PriSpan *PriSpan::create(int span, int chan1, int nChans, int dChan, bool isNet,
int switchType, int dialPlan, int presentation,
bool overlapDial, int nsf)
{
int fd = ::open("/dev/zap/channel", O_RDWR, 0600);
if (fd < 0)
return 0;
struct pri *p = makePri(fd,
(dChan >= 0) ? dChan+chan1-1 : -1,
(isNet ? PRI_NETWORK : PRI_CPE),
switchType, overlapDial, nsf);
if (!p) {
::close(fd);
return 0;
}
PriSpan *ps = new PriSpan(p,span,chan1,nChans,dChan,fd,dialPlan,presentation);
ps->startup();
return ps;
}
struct pri *PriSpan::makePri(int fd, int dchan, int nettype, int swtype,
bool overlapDial, int nsf)
{
if (dchan >= 0) {
// Set up the D channel if we have one
if (::ioctl(fd,ZT_SPECIFY,&dchan) == -1) {
Debug("PriSpan",DebugGoOn,"Failed to open D-channel %d: error %d: %s",
dchan,errno,::strerror(errno));
return 0;
}
ZT_PARAMS par;
if (::ioctl(fd, ZT_GET_PARAMS, &par) == -1) {
Debug("PriSpan",DebugWarn,"Failed to get parameters of D-channel %d: error %d: %s",
dchan,errno,::strerror(errno));
return 0;
}
if (par.sigtype != ZT_SIG_HDLCFCS) {
Debug("PriSpan",DebugWarn,"D-channel %d is not in HDLC/FCS mode",dchan);
return 0;
}
ZT_BUFFERINFO bi;
bi.txbufpolicy = ZT_POLICY_IMMEDIATE;
bi.rxbufpolicy = ZT_POLICY_IMMEDIATE;
bi.numbufs = 16;
bi.bufsize = 1024;
if (::ioctl(fd, ZT_SET_BUFINFO, &bi) == -1) {
Debug("PriSpan",DebugWarn,"Could not set buffering on D-channel %d",dchan);
return 0;
}
}
struct pri *ret = ::pri_new(fd, nettype, swtype);
#ifdef PRI_NSF_NONE
if (ret)
::pri_set_nsf(ret, nsf);
#endif
#ifdef PRI_SET_OVERLAPDIAL
if (ret)
::pri_set_overlapdial(ret, overlapDial);
#endif
return ret;
}
PriSpan::PriSpan(struct pri *_pri, int span, int first, int chans, int dchan, int fd, int dplan, int pres)
: Thread("PriSpan"), m_span(span), m_offs(first), m_nchans(chans),
m_fd(fd), m_dplan(dplan), m_pres(pres), m_pri(_pri),
m_restart(0), m_chans(0), m_ok(false)
{
Debug(DebugAll,"PriSpan::PriSpan(%p,%d,%d,%d) [%p]",_pri,span,chans,fd,this);
ZapChan **ch = new (ZapChan *)[chans];
for (int i = 1; i <= chans; i++)
ch[i-1] = (i == dchan) ? 0 : new ZapChan(this,i,s_buflen);
m_chans = ch;
zplugin.m_spans.append(this);
}
PriSpan::~PriSpan()
{
Debug(DebugAll,"PriSpan::~PriSpan() [%p]",this);
zplugin.m_spans.remove(this,false);
m_ok = false;
for (int i = 0; i < m_nchans; i++) {
ZapChan *c = m_chans[i];
m_chans[i] = 0;
if (c) {
c->hangup(PRI_CAUSE_NORMAL_UNSPECIFIED);
c->destruct();
}
}
delete[] m_chans;
::close(m_fd);
}
void PriSpan::run()
{
Debug(DebugAll,"PriSpan::run() [%p]",this);
m_restart = Time::now() + restartPeriod;
fd_set rdfds;
fd_set errfds;
for (;;) {
FD_ZERO(&rdfds);
FD_SET(m_fd, &rdfds);
FD_ZERO(&errfds);
FD_SET(m_fd, &errfds);
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 100;
int sel = ::select(m_fd+1, &rdfds, NULL, &errfds, &tv);
pri_event *ev = 0;
Lock lock(zplugin.mutex);
if (!sel) {
ev = ::pri_schedule_run(m_pri);
idle();
}
else if (sel > 0)
ev = ::pri_check_event(m_pri);
else if (errno != EINTR)
Debug("PriSpan",DebugGoOn,"select() error %d: %s",
errno,::strerror(errno));
if (ev) {
if (dumpEvents && debugAt(DebugAll))
::pri_dump_event(m_pri, ev);
handleEvent(*ev);
}
else {
int zev = zt_get_event(m_fd);
if (zev)
Debug("PriSpan",DebugInfo,"Zapata event %d",zev);
}
}
}
void PriSpan::idle()
{
if (!m_chans)
return;
if (restartPeriod && (Time::now() > m_restart)) {
m_restart = Time::now() + restartPeriod;
Debug("PriSpan",DebugInfo,"Restarting idle channels on span %d",m_span);
for (int i=0; i<m_nchans; i++)
if (m_chans[i])
restartChan(i+1,true);
}
for (int i=0; i<m_nchans; i++)
if (m_chans[i])
m_chans[i]->idle();
}
void PriSpan::handleEvent(pri_event &ev)
{
switch (ev.e) {
case PRI_EVENT_DCHAN_UP:
Debug(DebugInfo,"D-channel up on span %d",m_span);
m_ok = true;
m_restart = Time::now() + 1000000;
break;
case PRI_EVENT_DCHAN_DOWN:
Debug(DebugWarn,"D-channel down on span %d",m_span);
m_ok = false;
for (int i=0; i<m_nchans; i++)
if (m_chans[i])
m_chans[i]->hangup(PRI_CAUSE_NETWORK_OUT_OF_ORDER);
break;
case PRI_EVENT_RESTART:
restartChan(ev.restart.channel,false,true);
break;
case PRI_EVENT_CONFIG_ERR:
Debug(DebugWarn,"Error on span %d: %s",m_span,ev.err.err);
break;
case PRI_EVENT_RING:
ringChan(ev.ring.channel,ev.ring);
break;
case PRI_EVENT_INFO_RECEIVED:
infoChan(ev.ring.channel,ev.ring);
break;
case PRI_EVENT_RINGING:
Debug(DebugInfo,"Ringing our call on channel %d on span %d",ev.ringing.channel,m_span);
break;
case PRI_EVENT_HANGUP:
Debug(DebugInfo,"Hangup detected on channel %d on span %d",ev.hangup.channel,m_span);
hangupChan(ev.hangup.channel,ev.hangup);
break;
case PRI_EVENT_ANSWER:
Debug(DebugInfo,"Answered channel %d on span %d",ev.answer.channel,m_span);
answerChan(ev.setup_ack.channel);
break;
case PRI_EVENT_HANGUP_ACK:
Debug(DebugInfo,"Hangup ACK on channel %d on span %d",ev.hangup.channel,m_span);
break;
case PRI_EVENT_RESTART_ACK:
Debug(DebugInfo,"Restart ACK on channel %d on span %d",ev.restartack.channel,m_span);
break;
case PRI_EVENT_SETUP_ACK:
Debug(DebugInfo,"Setup ACK on channel %d on span %d",ev.setup_ack.channel,m_span);
ackChan(ev.setup_ack.channel);
break;
case PRI_EVENT_HANGUP_REQ:
Debug(DebugInfo,"Hangup REQ on channel %d on span %d",ev.hangup.channel,m_span);
hangupChan(ev.hangup.channel,ev.hangup);
break;
case PRI_EVENT_PROCEEDING:
Debug(DebugInfo,"Call proceeding on channel %d on span %d",ev.proceeding.channel,m_span);
proceedingChan(ev.proceeding.channel);
break;
#ifdef PRI_EVENT_PROGRESS
case PRI_EVENT_PROGRESS:
Debug(DebugInfo,"Call progressing on channel %d on span %d",ev.proceeding.channel,m_span);
proceedingChan(ev.proceeding.channel);
break;
#endif
default:
Debug(DebugInfo,"Received PRI event %d",ev.e);
}
}
bool PriSpan::validChan(int chan) const
{
return (chan > 0) && (chan <= m_nchans) && m_chans && m_chans[chan-1];
}
int PriSpan::findEmptyChan(int first, int last) const
{
if (!m_ok)
return -1;
first -= m_offs;
last -= m_offs;
if (first < 0)
first = 0;
if (last > m_nchans-1)
last = m_nchans-1;
for (int i=first; i<=last; i++)
if (m_chans[i] && !m_chans[i]->inUse())
return i+1;
return -1;
}
ZapChan *PriSpan::getChan(int chan) const
{
return validChan(chan) ? m_chans[chan-1] : 0;
}
void PriSpan::restartChan(int chan, bool outgoing, bool force)
{
if (chan < 0) {
Debug(DebugInfo,"Restart request on entire span %d",m_span);
return;
}
if (!validChan(chan)) {
Debug(DebugInfo,"Restart request on invalid channel %d on span %d",chan,m_span);
return;
}
if (force || !getChan(chan)->inUse()) {
Debug(DebugAll,"Restarting B-channel %d on span %d",chan,m_span);
getChan(chan)->restart(outgoing);
}
}
void PriSpan::ringChan(int chan, pri_event_ring &ev)
{
if (chan == -1)
chan = findEmptyChan();
if (!validChan(chan)) {
Debug(DebugInfo,"Ring on invalid channel %d on span %d",chan,m_span);
::pri_hangup(pri(),ev.call,PRI_CAUSE_CHANNEL_UNACCEPTABLE);
::pri_destroycall(pri(),ev.call);
return;
}
Debug(DebugInfo,"Ring on channel %d on span %d",chan,m_span);
getChan(chan)->ring(ev.call);
Debug(DebugInfo,"caller='%s' callerno='%s' callingplan=%d",
ev.callingname,ev.callingnum,ev.callingplan);
Debug(DebugInfo,"callednum='%s' redirectnum='%s' calledplan=%d",
ev.callednum,ev.redirectingnum,ev.calledplan);
Debug(DebugInfo,"type=%d complete=%d format='%s'",
ev.ctype,ev.complete,lookup(ev.layer1,dict_str2law,"unknown"));
Message *m = new Message("call.preroute");
m->addParam("driver","zap");
m->addParam("id",getChan(chan)->id());
m->addParam("span",String(m_span));
m->addParam("channel",String(chan));
if (ev.callingnum[0])
m->addParam("caller",ev.callingnum);
if (ev.callednum[0])
m->addParam("called",ev.callednum);
Engine::dispatch(m);
*m = "call.route";
if (Engine::dispatch(m)) {
*m = "call.execute";
m->addParam("callto",m->retValue());
m->retValue() = 0;
int dataLaw = -1;
switch (ev.layer1) {
case PRI_LAYER_1_ALAW:
dataLaw = ZT_LAW_ALAW;
break;
case PRI_LAYER_1_ULAW:
dataLaw = ZT_LAW_MULAW;
break;
}
getChan(chan)->open(dataLaw);
m->userData(getChan(chan));
if (Engine::dispatch(m)) {
getChan(chan)->setTarget(m->getValue("targetid"));
getChan(chan)->answer();
}
else
getChan(chan)->hangup(PRI_CAUSE_REQUESTED_CHAN_UNAVAIL);
}
else
getChan(chan)->hangup(PRI_CAUSE_NO_ROUTE_DESTINATION);
delete m;
}
void PriSpan::infoChan(int chan, pri_event_ring &ev)
{
if (!validChan(chan)) {
Debug(DebugInfo,"Info on invalid channel %d on span %d",chan,m_span);
return;
}
Debug(DebugInfo,"info on channel %d on span %d",chan,m_span);
Debug(DebugInfo,"caller='%s' callerno='%s' callingplan=%d",
ev.callingname,ev.callingnum,ev.callingplan);
Debug(DebugInfo,"callednum='%s' redirectnum='%s' calledplan=%d",
ev.callednum,ev.redirectingnum,ev.calledplan);
getChan(chan)->gotDigits(ev.callednum);
}
void PriSpan::hangupChan(int chan,pri_event_hangup &ev)
{
if (!validChan(chan)) {
Debug(DebugInfo,"Hangup on invalid channel %d on span %d",chan,m_span);
return;
}
Debug(DebugInfo,"Hanging up channel %d on span %d",chan,m_span);
getChan(chan)->hangup(ev.cause);
}
void PriSpan::ackChan(int chan)
{
if (!validChan(chan)) {
Debug(DebugInfo,"ACK on invalid channel %d on span %d",chan,m_span);
return;
}
Debug(DebugInfo,"ACKnowledging channel %d on span %d",chan,m_span);
getChan(chan)->setTimeout(0);
}
void PriSpan::answerChan(int chan)
{
if (!validChan(chan)) {
Debug(DebugInfo,"ANSWER on invalid channel %d on span %d",chan,m_span);
return;
}
Debug(DebugInfo,"ANSWERing channel %d on span %d",chan,m_span);
getChan(chan)->answered();
}
void PriSpan::proceedingChan(int chan)
{
if (!validChan(chan)) {
Debug(DebugInfo,"Proceeding on invalid channel %d on span %d",chan,m_span);
return;
}
Debug(DebugInfo,"Extending timeout on channel %d on span %d",chan,m_span);
getChan(chan)->setTimeout(60000000);
}
void ZapSource::run()
{
int rd = 0;
for (;;) {
Thread::yield();
int fd = m_owner->fd();
if (fd != -1) {
rd = ::read(fd,m_buf.data(),m_buf.length());
DDebug(DebugAll,"ZapSource read %d bytes",rd);
if (rd > 0) {
switch (m_owner->law()) {
case -1:
m_data.assign(m_buf.data(),rd);
Forward(m_data,rd/2);
break;
case ZT_LAW_MULAW:
m_data.convert(m_buf,"mulaw","slin",rd);
Forward(m_data,rd);
break;
case ZT_LAW_ALAW:
m_data.convert(m_buf,"alaw","slin",rd);
Forward(m_data,rd);
break;
}
}
else if (rd < 0) {
if ((errno != EAGAIN) && (errno != EINTR))
break;
}
else
break;
}
}
Debug(DebugAll,"ZapSource at EOF (read %d)",rd);
}
void ZapConsumer::Consume(const DataBlock &data, unsigned long timeDelta)
{
int fd = m_owner->fd();
DDebug(DebugAll,"ZapConsumer fd=%d datalen=%u",fd,data.length());
if ((fd != -1) && !data.null()) {
DataBlock blk;
switch (m_owner->law()) {
case -1:
blk = data;
break;
case ZT_LAW_MULAW:
blk.convert(data,"slin","mulaw");
break;
case ZT_LAW_ALAW:
blk.convert(data,"slin","alaw");
break;
default:
return;
}
if (m_buffer.length()+blk.length() <= m_bufsize*4)
m_buffer += blk;
#ifdef DEBUG
else
Debug("ZapConsumer",DebugAll,"Skipped %u bytes, buffer is full",blk.length());
#endif
if (m_buffer.null())
return;
if (m_buffer.length() >= m_bufsize) {
int wr = ::write(fd,m_buffer.data(),m_bufsize);
if (wr < 0) {
if ((errno != EAGAIN) && (errno != EINTR))
Debug(DebugGoOn,"ZapConsumer write error %d: %s",
errno,::strerror(errno));
}
else {
if ((unsigned)wr != m_bufsize)
Debug("ZapConsumer",DebugInfo,"Short write, %d of %u bytes",wr,m_bufsize);
m_buffer.cut(-wr);
}
}
}
}
ZapChan::ZapChan(PriSpan *parent, int chan, unsigned int bufsize)
: DataEndpoint("zaptel"), m_span(parent), m_chan(chan), m_ring(false),
m_timeout(0), m_call(0), m_bufsize(bufsize), m_fd(-1), m_law(-1)
{
Debug(DebugAll,"ZapChan::ZapChan(%p,%d) [%p]",parent,chan,this);
// I hate counting from one...
m_abschan = m_chan+m_span->chan1()-1;
m_isdn = true;
m_id << "zap/" << m_abschan;
}
ZapChan::~ZapChan()
{
Debug(DebugAll,"ZapChan::~ZapChan() [%p] %d",this,m_chan);
hangup(PRI_CAUSE_NORMAL_UNSPECIFIED);
}
void ZapChan::disconnected(bool final, const char *reason)
{
Debugger debug("ZapChan::disconnected()", " '%s' [%p]",reason,this);
if (!final) {
Message m("chan.disconnected");
m.addParam("driver","zap");
m.addParam("id",id());
m.addParam("span",String(m_span->span()));
m.addParam("channel",String(m_chan));
if (m_targetid) {
m.addParam("targetid",m_targetid);
setTarget();
}
m.addParam("reason",reason);
Engine::enqueue(m);
}
// FIXME: we can't know from which thread we got disconnected
bool gotLock = zplugin.mutex.lock(1000);
hangup(PRI_CAUSE_NORMAL_CLEARING);
if (gotLock)
zplugin.mutex.unlock();
}
bool ZapChan::nativeConnect(DataEndpoint *peer)
{
#if 0
ZapChan *zap = static_cast<ZapChan *>(peer);
if ((m_fd < 0) || !zap || (zap->fd() < 0))
return false;
ZT_CONFINFO conf;
conf.confmode = ZT_CONF_DIGITALMON;
conf.confno = zap->absChan();
if (ioctl(m_fd, ZT_SETCONF, &conf))
return false;
conf.confno = zap->absChan();
if (ioctl(m_fd, ZT_SETCONF, &conf))
return false;
#endif
return false;
}
const char *ZapChan::status() const
{
if (m_ring)
return "ringing";
if (m_call)
return m_timeout ? "calling" : "connected";
return "idle";
}
void ZapChan::idle()
{
if (m_timeout && (Time::now() > m_timeout)) {
Debug("ZapChan",DebugWarn,"Timeout %s channel %d on span %d",
status(),m_chan,m_span->span());
m_timeout = 0;
hangup(PRI_CAUSE_RECOVERY_ON_TIMER_EXPIRE);
}
}
void ZapChan::restart(bool outgoing)
{
disconnect("restart");
close();
if (outgoing)
::pri_reset(m_span->pri(),m_chan);
}
void ZapChan::close()
{
setSource();
setConsumer();
zt_close(m_fd);
m_fd = -1;
}
bool ZapChan::open(int defLaw)
{
m_fd = zt_open(m_abschan,false,m_bufsize);
if (m_fd == -1)
return false;
setSource(new ZapSource(this,m_bufsize));
getSource()->deref();
setConsumer(new ZapConsumer(this,m_bufsize));
getConsumer()->deref();
if (zt_set_law(m_fd,defLaw)) {
m_law = defLaw;
Debug(DebugInfo,"Opened Zap channel %d, law is: %s (desired)",m_abschan,lookup(m_law,dict_str2ztlaw,"unknown"));
return true;
}
int laws[3];
laws[0] = -1;
if (m_span->chans() > 24) {
laws[1] = ZT_LAW_ALAW;
laws[2] = ZT_LAW_MULAW;
}
else {
laws[1] = ZT_LAW_MULAW;
laws[2] = ZT_LAW_ALAW;
}
for (int l=0; l<3;l++)
if ((laws[l] != defLaw) && zt_set_law(m_fd,laws[l])) {
m_law = laws[l];
Debug(DebugInfo,"Opened Zap channel %d, law is: %s (fallback)",m_abschan,lookup(m_law,dict_str2ztlaw,"unknown"));
return true;
}
close();
Debug(DebugWarn,"Unable to set zap to any known format");
return false;
}
bool ZapChan::answer()
{
if (!m_ring) {
Debug("ZapChan",DebugWarn,"Answer request on %s channel %d on span %d",
status(),m_chan,m_span->span());
return false;
}
m_ring = false;
m_timeout = 0;
Output("Answering on zap/%d (%d/%d)",m_abschan,m_span->span(),m_chan);
::pri_answer(m_span->pri(),m_call,m_chan,!m_isdn);
return true;
}
void ZapChan::hangup(int cause)
{
const char *reason = pri_cause2str(cause);
if (inUse())
Debug(DebugInfo,"Hanging up zap/%d in state %s: %s (%d)",
m_abschan,status(),reason,cause);
m_timeout = 0;
setTarget();
disconnect(reason);
close();
m_ring = false;
if (m_call) {
::pri_hangup(m_span->pri(),m_call,cause);
::pri_destroycall(m_span->pri(),m_call);
m_call = 0;
Message *m = new Message("call.hangup");
m->addParam("driver","zap");
m->addParam("id",id());
m->addParam("span",String(m_span->span()));
m->addParam("channel",String(m_chan));
m->addParam("reason",pri_cause2str(cause));
Engine::enqueue(m);
}
}
void ZapChan::answered()
{
if (!m_call) {
Debug("ZapChan",DebugWarn,"Answer detected on %s channel %d on span %d",
status(),m_chan,m_span->span());
return;
}
m_timeout = 0;
Output("Remote answered on zap/%d (%d/%d)",m_abschan,m_span->span(),m_chan);
Message *m = new Message("call.answered");
m->addParam("driver","zap");
m->addParam("id",id());
m->addParam("span",String(m_span->span()));
m->addParam("channel",String(m_chan));
if (m_targetid)
m->addParam("targetid",m_targetid);
m->addParam("status","answered");
Engine::enqueue(m);
}
void ZapChan::gotDigits(const char *digits)
{
Message *m = new Message("chan.dtmf");
m->addParam("driver","zap");
m->addParam("id",id());
m->addParam("span",String(m_span->span()));
m->addParam("channel",String(m_chan));
if (m_targetid)
m->addParam("targetid",m_targetid);
m->addParam("text",digits);
Engine::enqueue(m);
}
void ZapChan::sendDigit(char digit)
{
if (m_call)
::pri_information(m_span->pri(),m_call,digit);
}
bool ZapChan::call(Message &msg, const char *called)
{
if (m_span->outOfOrder()) {
Debug("ZapChan",DebugInfo,"Span %d is out of order, failing call",m_span->span());
return false;
}
if (!called)
called = msg.getValue("called");
Debug("ZapChan",DebugInfo,"Calling '%s' on channel %d span %d",
called, m_chan,m_span->span());
int layer1 = lookup(msg.getValue("format"),dict_str2law,-1);
hangup(PRI_CAUSE_PRE_EMPTED);
DataEndpoint *dd = static_cast<DataEndpoint *>(msg.userData());
if (dd) {
int dataLaw = -1;
switch (layer1) {
case PRI_LAYER_1_ALAW:
dataLaw = ZT_LAW_ALAW;
break;
case PRI_LAYER_1_ULAW:
dataLaw = ZT_LAW_MULAW;
break;
}
open(dataLaw);
switch (m_law) {
case ZT_LAW_ALAW:
layer1 = PRI_LAYER_1_ALAW;
break;
case ZT_LAW_MULAW:
layer1 = PRI_LAYER_1_ULAW;
break;
}
connect(dd);
msg.addParam("targetid",id());
}
else
msg.userData(this);
Output("Calling '%s' on zap/%d (%d/%d)",called,m_abschan,m_span->span(),m_chan);
char *caller = (char *)msg.getValue("caller");
int callerplan = lookup(msg.getValue("callerplan"),dict_str2dplan,m_span->dplan());
char *callername = (char *)msg.getValue("callername");
int callerpres = lookup(msg.getValue("callerpres"),dict_str2pres,m_span->pres());
int calledplan = lookup(msg.getValue("calledplan"),dict_str2dplan,m_span->dplan());
Debug(DebugAll,"Caller='%s' name='%s' plan=%s pres=%s, Called plan=%s",
caller,callername,lookup(callerplan,dict_str2dplan),
lookup(callerpres,dict_str2pres),lookup(calledplan,dict_str2dplan));
m_call =::pri_new_call(span()->pri());
#ifdef PRI_DUMP_INFO
struct pri_sr *req = ::pri_sr_new();
::pri_sr_set_bearer(req,0/*transmode*/,layer1);
::pri_sr_set_channel(req,m_chan,1/*exclusive*/,!m_isdn);
::pri_sr_set_caller(req,caller,callername,callerplan,callerpres);
::pri_sr_set_called(req,(char *)called,calledplan,1/*complete*/);
::q931_setup(span()->pri(),m_call,req);
#else
::pri_call(m_span->pri(),m_call,0/*transmode*/,m_chan,1/*exclusive*/,!m_isdn,
caller,callerplan,callername,callerpres,(char *)called,calledplan,layer1
);
#endif
setTimeout(10000000);
return true;
}
void ZapChan::ring(q931_call *call)
{
if (call) {
setTimeout(10000000);
m_call = call;
m_ring = true;
::pri_acknowledge(m_span->pri(),m_call,m_chan,0);
}
else
hangup(PRI_CAUSE_WRONG_CALL_STATE);
}
bool ZapHandler::received(Message &msg)
{
String dest(msg.getValue("callto"));
if (dest.null())
return false;
Regexp r("^zap/\\([^/]*\\)/\\?\\(.*\\)$");
if (!dest.matches(r))
return false;
if (!msg.userData()) {
Debug(DebugWarn,"Zaptel call found but no data channel!");
return false;
}
String chan = dest.matchString(1);
String num = dest.matchString(2);
DDebug(DebugInfo,"Found call to Zaptel chan='%s' name='%s'",
chan.c_str(),num.c_str());
ZapChan *c = 0;
r = "^\\([0-9]\\+\\)-\\([0-9]*\\)$";
Lock lock(zplugin.mutex);
if (chan.matches(r))
c = zplugin.findChan(chan.matchString(1).toInteger(),
chan.matchString(2).toInteger(65535));
else
c = zplugin.findChan(chan.toInteger(-1));
if (c) {
Debug(DebugInfo,"Will call '%s' on chan zap/%d (%d/%d)",
num.c_str(),c->absChan(),c->span()->span(),c->chan());
return c->call(msg,num);
}
else
Debug(DebugWarn,"No free Zaptel channel '%s'",chan.c_str());
return false;
}
bool ZapDropper::received(Message &msg)
{
String id(msg.getValue("id"));
if (id.null()) {
Debug("ZapDropper",DebugInfo,"Dropping all calls");
zplugin.mutex.lock();
const ObjList *l = &zplugin.m_spans;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s) {
for (int n=1; n<=s->chans(); n++) {
ZapChan *c = s->getChan(n);
if (c)
c->hangup(PRI_CAUSE_INTERWORKING);
}
}
}
zplugin.mutex.unlock();
return false;
}
if (!id.startsWith("zap/"))
return false;
ZapChan *c = 0;
id >> "zap/";
int n = id.toInteger();
if ((n > 0) && (c = zplugin.findChan(n))) {
Debug("ZapDropper",DebugInfo,"Dropping zap/%d (%d/%d)",
n,c->span()->span(),c->chan());
zplugin.mutex.lock();
c->hangup(PRI_CAUSE_INTERWORKING);
zplugin.mutex.unlock();
return true;
}
Debug("ZapDropper",DebugInfo,"Could not find zap/%s",id.c_str());
return false;
}
bool ZapDTMF::received(Message &msg)
{
String id(msg.getValue("targetid"));
if (!id.startsWith("zap/"))
return false;
String text(msg.getValue("text"));
ZapChan *c = 0;
id >> "zap/";
int n = id.toInteger();
if ((n > 0) && (c = zplugin.findChan(n))) {
Debug("ZapDTMF",DebugInfo,"Sending to zap/%d (%d/%d)",
n,c->span()->span(),c->chan());
zplugin.mutex.lock();
for (unsigned int i = 0; i < text.length(); i++)
c->sendDigit(text[i]);
zplugin.mutex.unlock();
return true;
}
Debug("ZapDTMF",DebugInfo,"Could not find zap/%s",id.c_str());
return false;
}
bool StatusHandler::received(Message &msg)
{
const char *sel = msg.getValue("module");
if (sel && ::strcmp(sel,"zapchan") && ::strcmp(sel,"fixchans"))
return false;
String st("name=zapchan,type=fixchans,format=Span|Chan|Status");
zplugin.mutex.lock();
const ObjList *l = &zplugin.m_spans;
st << ",spans=" << l->count() << ",spanlen=";
bool first = true;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s) {
if (first)
first = false;
else
st << "|";
st << s->chans();
}
}
st << ";buflen=" << s_buflen << ";";
l = &zplugin.m_spans;
first = true;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s) {
for (int n=1; n<=s->chans(); n++) {
ZapChan *c = s->getChan(n);
if (c) {
if (first)
first = false;
else
st << ",";
st << c->id() << "=";
st << s->span() << "|" << n << "|" << c->status();
}
}
}
}
zplugin.mutex.unlock();
msg.retValue() << st << "\n";
return false;
}
ZaptelPlugin::ZaptelPlugin()
{
Output("Loaded module Zaptel");
::pri_set_error(pri_err_cb);
::pri_set_message(pri_msg_cb);
}
ZaptelPlugin::~ZaptelPlugin()
{
Output("Unloading module Zaptel");
}
PriSpan *ZaptelPlugin::findSpan(int chan)
{
const ObjList *l = &m_spans;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s && s->belongs(chan))
return s;
}
return 0;
}
ZapChan *ZaptelPlugin::findChan(const char *id)
{
String s(id);
if (!s.startsWith("zap/"))
return 0;
s >> "zap/";
int n = s.toInteger();
return (n > 0) ? findChan(n) : 0;
}
ZapChan *ZaptelPlugin::findChan(int first, int last)
{
DDebug(DebugAll,"ZaptelPlugin::findChan(%d,%d)",first,last);
// see first if we have an exact request
if (first > 0 && last < 0) {
PriSpan *s = findSpan(first);
return s ? s->getChan(first - s->chan1() + 1) : 0;
}
if (last < 0)
last = 65535;
const ObjList *l = &m_spans;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s) {
Debug(DebugAll,"Searching for free chan in span %d [%p]",
s->span(),s);
int c = s->findEmptyChan(first,last);
if (c > 0)
return s->getChan(c);
if (s->belongs(last))
break;
}
}
return 0;
}
bool ZaptelPlugin::isBusy() const
{
const ObjList *l = &m_spans;
for (; l; l=l->next()) {
PriSpan *s = static_cast<PriSpan *>(l->get());
if (s) {
for (int n=1; n<=s->chans(); n++) {
ZapChan *c = s->getChan(n);
if (c && c->inUse())
return true;
}
}
}
return false;
}
void ZaptelPlugin::initialize()
{
Output("Initializing module Zaptel");
Configuration cfg(Engine::configFile("zapchan"));
PriSpan::restartPeriod = cfg.getIntValue("general","restart") * 1000000ULL;
PriSpan::dumpEvents = cfg.getBoolValue("general","dumpevents");
if (!m_spans.count()) {
s_buflen = cfg.getIntValue("general","buflen",480);
int chan1 = 1;
for (int span = 1;;span++) {
String sect("span ");
sect += String(span);
int num = cfg.getIntValue(sect,"chans",-1);
if (num < 0)
break;
if (num) {
chan1 = cfg.getIntValue(sect,"first",chan1);
PriSpan::create(span,chan1,num,
cfg.getIntValue(sect,"dchan", num > 24 ? 16 : -1),
cfg.getBoolValue(sect,"isnet",true),
cfg.getIntValue(sect,"swtype",dict_str2switch,
PRI_SWITCH_UNKNOWN),
cfg.getIntValue(sect,"dialplan",dict_str2dplan,
PRI_UNKNOWN),
cfg.getIntValue(sect,"presentation",dict_str2pres,
PRES_ALLOWED_USER_NUMBER_NOT_SCREENED),
cfg.getBoolValue(sect,"overlapdial",false),
cfg.getIntValue(sect,"facilities",dict_str2nsf,
YATE_NSF_DEFAULT)
);
chan1 += num;
}
}
if (m_spans.count()) {
Output("Created %d spans",m_spans.count());
Engine::install(new ZapHandler);
Engine::install(new ZapDropper);
Engine::install(new ZapDTMF);
Engine::install(new StatusHandler);
}
else
Output("No spans created, module not activated");
}
}
/* vi: set ts=8 sw=4 sts=4 noet: */
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