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lookup.exec
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lookup.exec
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/* LOOKUP EXEC */
/* */
/* A BITNET/HNET name server */
/* for z/VM, VM/ESA and VM/SP */
/* Moshix */
/* */
/* copyright 2021 by moshix */
/* Apache 2.0 license */
/***************************************/
/* execute this from RELAY VM before starting RELAY CHAT: */
/* defaults set tell msgcmd msgnoh to remove host(user) in output */
/* CHANGE HISTORY */
/* V0.1 : Humble beginnings */
/* V0.2 : Add command history /history */
/* V0.3 : Changed HELP and all main versioning commands */
/* V0.4 : Created logo for HELP and start messages */
/* V0.5 : Removed BCAST and unncessary functions like STORE */
/* V0.6 : Removed wakup */
/* V0.7 : Added /WHO handling general function */
/* V0.8 : Added /ROUTE handling general function */
/* configuraiton parameters - IMPORTANT */
lookupversion="0.8" /* needed */
timezone="CDT" /* adjust for your server IMPORTANT */
localnode="" /* localnode is now autodetected as 2.7.1 */
osversion="z/VM 7.2" /* OS version for enquries and stats */
typehost="IBM 1090" /* what kind of machine */
hostloc ="Houston, TX " /* where is this machine */
sysopname="Moshix " /* who is the sysop for this chat server */
sysopemail="moshix " /* where to contact this systop */
postpswd="125" /* password needed to store bcast msgs */
compatibility=3 /* 1 VM/SP 6, 2=VM/ESA 3=z/VM and up */
sysopuser='MAINT' /* sysop user who can force users out */
sysopnode=translate(localnode) /* sysop node automatically set */
raterwatermark=18000 /* max msgs per minute set for this server */
log2file=1 /* log also to lookup log file */
/* global variables */
isincluded=0 /* is keyword found ?? */
eStarttime=1 /* used for logged on users to start countdown to asleep */
LastSessionStart=3000000 /* last user session started at... */
InSessionUser="" /* which user is currently in session */
BIGLOCK=0 /* RESET LOCK FOR MULTITENANT */
returnNJEmsg="HCPMSG045E" /* messages returning for users not logged on */
returnNJEmsg2="DMTRGX334I"/* looping error message flushed */
returnNJEmsg3="HCPMFS057I"/* looping error message flushed */
returnNJEmsg4="HCPMSG045E"/* user not logged on */
returnNJEmsg5="DMSWTL648E"/* userid not found, no message sent */
loggedonusers = 0 /* online user at any given moment */
highestusers = 0 /* most users online at any given moment */
totmessages = 0 /* total number of msgs sent */
otime = 0 /* overtime to log off users after n minutes */
starttime=mytime() /* for /SYSTEM */
starttimeSEC=ExTime() /* for msg rate calculation */
logline = " " /* initialize log line */
receivedmsgs=0 /* number of messages received for stats and loop*/
err1="currently NOT"
err2="to logon on"
err3="Weclome to Relay chat"
err4="logged off now"
illegaluser1="RSCS" /* we should never receive a message from these users */
illegaluser2="ROOT" /* we should never receive a message from these users */
historypointer=1
history.0=20 /* max 20 entries for user command history */
sysperf=0 /* /benchmark system performance (in sec) holder */
TRUE=1
FALSE=0
WGET=FALSE /* is Charlot and WW2GET installed TRUE=yes */
call initlookup /* initalize lookup and do all the fancy stuff to start */
/* Invoke WAKEUP first so it will be ready to receive msgs */
/* This call also issues a 'SET MSG IUCV' command. */
'SET MSG IUCV'
'MAKEBUF'
Do forever;
'wakeup +1 (iucvmsg QUIET' /* wake up every minute anyway */
/* parse pull text */ /* get what was send */
select
when Rc = 2 then do
/* timer has expired */
call scheduler /* check if any scheduled slots */
end
when Rc = 5 then do; /* we have a message */
/* parse it */
parse pull text
if pos('From', text) > 0 then do /* from RSCS */
parse var text type sender . nodeuser msg
parse var nodeuser node '(' userid '):'
CALL LOG('from '||userid||' @ '||node||' '||msg)
receivedmsgs= receivedmsgs + 1
/* below line checks if high rate watermark is exceeded */
/* and if so.... exits! */
call highrate (receivedmsgs)
uppuserid=TRANSLATE(userid)
/* below line eliminates service messages from other relay nodes and eliminates loops */
if pos(err1,msg) > 0 | pos(err2,msg) > 0 | pos(err3,msg) > 0 | pos(err4,msg) > 0 then do
end
else do
if detector(msg) > 0 then call handlemsg userid,node,msg
end
end
else do; /* simple msg from local user */
/* format is like this: */
/* *MSG MAINT hello */
parse var text type userid msg
node = localnode
call handlemsg userid,node,msg
end
end
when Rc = 6 then
signal xit
otherwise
end
end; /* of do forever loop */
xit:
/* when its time to quit, come here */
'WAKEUP RESET'; /* turn messages from IUCV to ON */
'SET MSG ON'
'DROPBUF'
exit;
handlemsg:
/* handle all incoming messages and send to proper method */
parse ARG userid,node,msg
smsg=SUBSTR(msg,2)
smsg=STRIP(smsg)
/* call immulog userid,node,smsg */
userid=strip(userid)
node=strip(node)
if userid = illegaluser1 | userid = illegaluser2 then do
call log ('Message arrived from illegal user: '||userid)
return
end
CurrentTime=Extime()
umsg = translate(msg) /* make upper case */
umsg=strip(umsg)
/* below few lines: loop detector */
loopmsg=SUBSTR(umsg,1,11) /* extract RSCS error msg */
if (loopmsg = returnNJEmsg | loopmsg = returnNJEmsg2 | loopmsg = returnNJEmsg3 loopmsg = returnNJEmsg5 ) then do
call log('Loop detector triggered for user: '||userid||'@'||node)
return
end
commandumsg=SUBSTR(umsg,2,5)
updbuff=1
SELECT /* HANDLE MESSAGE TYPES */
when (umsg = "/CPU") then
call sendcpu userid,node
when (umsg = "/SYSTEM") then
call systeminfo userid,node
when (umsg = "/STATS") then
call sendstats userid,node
when (umsg = "/HISTORY") then
call users userid,node
when (umsg = "/NEWS") then
call news userid,node
when (umsg = "/FOREX") then
call forex userid,node
when (umsg = "/MOON") then
call moon userid,node
when (LEFT(umsg,9) = "/FORECAST") then
call forecast userid,node,msg
when (umsg = "/HELP") then
call helpuser userid,node
when (LEFT(umsg,4) = "/WHO") then
call whois userid,node,msg
when (LEFT(umsg,6) = "/ROUTE") then
call route userid,node,msg
when (umsg = "/BENCHMARK") then
call usrbenchmark userid,node
when (umsg = "/TIME") then
call sendtime userid,node
otherwise
call helpuser userid,node,msg
end
return
whois:
/* who is user or node main handling function */
parse arg userid,node,msg
rec.0=100
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : /WHO "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
Parse Value msg With . srchword
fileid='LOOKUP TABL A'
'EXECIO * DISKR' fileid '(STEM REC. FINIS'
if rc<>0 then call log ('Problems reading file' || fileid)
do i=1 by 1 to rec.0
if left(rec.i,1)='*' then iterate
/* process record */
if WORDPOS(srchword,rec.i) > 0 then call respond userid,node,rec.i
end
return 0
ROUTE:
/* dispay routes for a node */
parse arg userid,node,msg
rec.0=100
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : /ROUTE "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
Parse Value msg With . srchword
fileid='ROUTES TABL A'
'EXECIO * DISKR' fileid '(STEM REC. FINIS'
if rc<>0 then call log ('Problems reading file' || fileid)
do i=1 by 1 to rec.0
if left(rec.i,1)='*' then iterate
/* process record */
if WORDPOS(srchword,rec.i) > 0 then call respond userid,node,rec.i
end
return 0
scheduler:
/* called every n minutes by WAKEUP function for housekeeping jobs */
return 0
news:
/* send bbc and npr news */
parse arg userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : NEWS "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
/*
'ERASE WGET OUT A'
'WW2GET http://relayserv.dynu.net/cleanreq?arg=NEWS WGET OUT A'
do forever
'EXECIO 1 DISKR WGET OUT A (VAR LINEIN'
if rc<>0 then leave
call respond userid,node,LINEIN
end
'FINIS' 'WGET OUT A'*/
return 0
forecast:
/* send forecast for city */
parse ARG userid,node,msg
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : FORECAST"
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
parse VALUE msg with . city
request='http://relayserv.dynu.net/cleanreq?arg=FORECAST%20'||city||' WGET OUT A'
'ERASE WGET OUT A'
'WW2GET' request
do forever
'EXECIO 1 DISKR WGET OUT A (VAR LINEIN'
if rc<>0 then leave
call respond userid,node,LINEIN
end
'FINIS' 'WGET OUT A'
return 0
forex:
/* get forex infro from relayserv.bitnet.systems/cleanforex */
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : FOREX "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
'ERASE FOREX OUT A'
'WW2GET http://relayserver.dynu.net/cleanforex FOREX OUT A'
do forever
'EXECIO 1 DISKR FOREX OUT A (VAR LINEIN'
if rc<>0 then leave
call respond userid,node,LINEIN
end
'FINIS' 'FOREX OUT A'
return 0
moon:
/* get moon phase from relayserver.bitnet.systems */
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : MOON "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
'ERASE MOON OUT A'
'WW2GET http://relayserv.dynu.net/cleanmoon MOON OUT A'
do forever
'EXECIO 1 DISKR MOON OUT A (VAR LINEIN'
if rc<>0 then leave
call respond userid,node,LINEIN
end
'FINIS' 'MOON OUT A'
return 0
systeminfo:
/* send /SYSTEM info about this host */
parse ARG userid,node
listuser = userid"@"node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : SYSINFO "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
parse value translate(diag(8,"INDICATE LOAD"), " ", "15"x) ,
with 1 "AVGPROC-" cpu "%" 1 "PAGING-" page "/"
cpu = right( cpu+0, 3)
'TELL' userid 'AT' node '-> NJE node name : 'localnode
'TELL' userid 'AT' node '-> Lookup version : 'lookupversion
'TELL' userid 'AT' node '-> OS for this host : 'osversion
'TELL' userid 'AT' node '-> Type of host : 'typehost
'TELL' userid 'AT' node '-> Location of this host: 'hostloc
'TELL' userid 'AT' node '-> Time Zone of : 'timezone
'TELL' userid 'AT' node '-> SysOp for this server: 'sysopname
'TELL' userid 'AT' node '-> SysOp email addr : 'sysopemail
'TELL' userid 'AT' node '-> System Load :'cpu'%'
if compatibility > 2 then do
page=paging()
rstor=rstorage()
cfg=configuration()
lcpus=numcpus()
/* parse var mcpu mpage mcf mrstor mlcpus */
'TELL' userid 'AT' node '-> Pages/Sec : 'page
'TELL' userid 'AT' node '-> IBM Machine Type : 'cfg
'TELL' userid 'AT' node '-> Memory in LPAR or VM : 'rstor
'TELL' userid 'AT' node '-> Number of CPUs : 'lcpus
end
if compatibility > 2 then do
totmessages = totmessages + 13
end
else do
totmessages = totmessages + 9
end
return
sendstats:
/* send usage statistics to whoever asks, even if not logged on */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : STATS "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
parse value translate(diag(8,"INDICATE LOAD"), " ", "15"x) ,
with 1 "AVGPROC-" cpu "%" 1 "PAGING-" page "/"
cpu = right( cpu+0, 3)
actualtime=Extime()
elapsedsec=(actualtime-starttimeSEC)
if elapsedsec = 0 then elapsedsec = 1 /* avoid division by zero on Jan 1 at 00:00 */
msgsrate = (receivedmsgs + totmessages) / elapsedsec
msgsratef= FORMAT(msgsrate,4,2) /* rounding */
msgsratef = STRIP(msgsratef)
listuser = userid"@"node
'TELL' userid 'AT' node '-> Total number of msgs : 'totmessages
'TELL' userid 'AT' node '-> Messages rate /minute: 'msgsratef
'TELL' userid 'AT' node '-> Server up since : 'starttime' 'timezone
'TELL' userid 'AT' node '-> System CPU load : 'STRIP(cpu)'%'
'TELL' userid 'AT' node '-> LOOKUP version : v'lookupversion
totmessages = totmessages+ 5
return
helpuser:
/* send help menu */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : HELP "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
listuser = userid"@"node
'TELL' userid 'AT' node '._ ____ ____ _ __ _ ____ '
'TELL' userid 'AT' node ' / \ / _ \/ _ \/ |/ // \ /\/ __\ '
'TELL' userid 'AT' node ' | | | / \|| / \|| / | | ||| \/| '
'TELL' userid 'AT' node ' | |_/\| \_/|| \_/|| \ | \_/|| __/ '
'TELL' userid 'AT' node ' \____/\____/\____/\_|\_\\____/\_/ '
'TELL' userid 'AT' node ' '
'TELL' userid 'AT' node ' for VM/SP, VM/ESA and z/VM '
'TELL' userid 'AT' node '/HELP for this help'
'TELL' userid 'AT' node '/STATS for ... you guessed it ...statistics!'
'TELL' userid 'AT' node '/SYSTEM for info about this host'
'TELL' userid 'AT' node '/BENCHMARK to see the performance of this machien'
'TELL' userid 'AT' node '/TIME to get time zone and time of this server'
'TELL' userid 'AT' node '/WHO Lokup a user name '
'TELL' userid 'AT' node '/ROUTE Lokup a route to a node'
if WGET=TRUE then do
'TELL' userid 'AT' node '/FOREX gets your updated foreign exchange prices from web '
'TELL' userid 'AT' node '/MOON check out the current moon phase!'
'TELL' userid 'AT' node '/NEWS to get latest BBC and NPR news '
'TELL' userid 'AT' node '/FORECAST CITY to get graphic weather forecast'
'TELL' userid 'AT' node '/LOOKUP to look up a node routing'
'TELL' userid 'AT' node '/CALENDAR YEAR MON for a UNIX-style calendar'
'TELL' userid 'AT' node '/OIL to get current WTI oil prices'
'TELL' userid 'AT' node '/MAZE to have a little fun break from work'
'TELL' userid 'AT' node '/WINE BRAND POINTS to get reviews of the wine in front of you'
'TELL' userid 'AT' node '/STOCK IBM to get your favorite stock price'
end
'TELL' userid 'AT' node ' '
'TELL' userid 'AT' node ' messages with -> are dialogues from Lookup '
totmessages = totmessages + 20
if WGET = TRUE then totmessages = totmessages + 12
return
users:
/* show history of last 20 chat messages to /users */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : USERS "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
i=0
found=0
z=history.0
say 'history queue length: 'z
'TELL 'userid' AT 'node '> Previous 'history.0' messages:'
totmessages = totmessages + 1
do i = 1 to z by 1
if history.i /= "" then do
'TELL 'userid' AT 'node '> 'history.i
totmessages = totmessages + 1
found=found+1
end
end
if found < 1 then 'TELL 'userid' AT 'node '> ...bummer... no chat history so far...'
totmessages = totmessages + 1
return
usrbenchmark:
/* send to user a fuller benchmark suite */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : BENCHMARK"
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
'TELL' userid 'AT' node '-> Benchmark Overiew (smaller number is better)'
'TELL' userid 'AT' node '-> --------------------------------------------'
'TELL' userid 'AT' node '-> '
'TELL' userid 'AT' node '-> This system : 'sysperf
'TELL' userid 'AT' node '-> IBM z114 : 0.225'
'TELL' userid 'AT' node '-> IBM zEC12 : 0.230'
'TELL' userid 'AT' node '-> IBM z/PDT on Xeon 3.5Ghz : 0.850'
'TELL' userid 'AT' node '-> IBM z/PDT on Xeon 2.4Ghz : 1.250'
'TELL' userid 'AT' node '-> Hyperion 4.4 on Xeon 3.5Ghz : 8.800'
'TELL' userid 'AT' node '-> Hyperion 4.4 on Xeon 2.1Ghz : 12.200'
totmessages = totmessages + 9
return 0
sendtime:
/* send time and time zone to user */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : TIME"
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
Parse Value Diag(8,'QUERY TIME') With . . timenow tz tday tdate
CALL RESPOND userid,node,"It is: "||timenow||" "||tday||" "||tdate
CALL RESPOND userid,node,"time zone: "||tz
return 0
sendcpu:
/* send cpu busy of this machine */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : CPU "
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
CALL RESPOND userid,node,"CPU busy average for this machine: "cpubusy()||" %"
return 0
forecast:
/* send weather forecast thru RELAY service */
parse ARG userid,node
htime=mytime()
histuser=htime||" : "userid||" @ "||node||" : FORECAST"
call inserthistory histuser,historypointer
if historypointer < history.0 then historypointer=historypointer +1
/* extract city from /forecast xxx and send to RELAY as following:
smsg rscs cmd relay forecast CITY
*/
return 0
refreshTime:
/* Refresh last transaction time */
arg ctime,userid,node
listuser=userid'@'node
ppos=pos('/'listuser,$.@)
if ppos=0 then return /* user not logged on */
ppos=pos('(',$.@,ppos+1) /* find timestamp */
if ppos=0 then return /* not found, let it be */
rpos=pos(')',$.@,ppos+1)+1 /* find end of timestamp */
if rpos=0 then return /* ) not found, let it be */
rlen=rpos-ppos
$.@=overlay('('ctime')',$.@,ppos,rlen)
return
exTime:
/* Calculate Seconds in this year */
dd=(date('d')-1)*86400
parse value time() with hh':'mm':'ss
tt=hh*3600+mm*60+ss
return right(dd+tt,8,'0')
epochtime: procedure
/*return date and time of now since jan 1 2021 */
today = Date('Base')
days = today - Date('Base', '20210101', 'Standard')
/* TIME IS 00:09:05 EDT WEDNESDAY 03/03/21 */
qtime=time()
parse var qtime hh':'mm':'ss
tt=hh*3600+mm*60+ss
dd=days*86400
sincepoch=tt+dd
return sincepoch
epochat: procedure
/*return future epoch time based on date */
parse arg futuretime
today = Date('Base')
days = today - Date('Base', '20210101', 'Standard')
/* TIME IS 00:09:05 EDT WEDNESDAY 03/03/21 */
qtime=futuretime
parse var qtime hh':'mm':'ss
tt=hh*3600+mm*60+ss
dd=days*86400
sincepoch=tt+dd
return sincepoch
mytime: procedure
timenow = left(time(),5)
hr = left(timenow,2)
min = right(timenow,2)
if hr > 12 then timenow = (hr - 12)'.'min' pm'
else if hr = 12 then timenow = hr'.'min' pm'
else timenow = hr'.'min' am'
if left(timenow,1) = '0' then timenow = substr(timenow,2)
dow = left(date('weekday'),3)
day = right(date('sorted'),2)
if left(day,1) = '0' then day = substr(day,2)
month = left(date('month'),3)
year = left(date('sorted'),4)
return timenow',' dow day month year
log:
/* general logger function */
/* log a line to console and LOOKUP LOG A */
parse ARG logline
say mytime()' :: 'logline
if log2file = 1 & compatibility > 0 then do
address command
/* 'PIPE (name logit)',
'| spec /'mytime()'/ 1 /::/ n /'logLine'/ n',
'| >> LOOKUP LOG A'*/
logline=mytime()||' :: '||logline
'EXECIO 1 DISKW RELAY LOG A (STRING '||logline
'FINIS LOOKUP LOG A'
end
return
cpubusy:
/* how busy are the CPU(s) on this LPAR */
/* extract CPU buy information for stats etc. */
cplevel = space(cp_id) sl
strlen = length(cplevel)
parse value translate(diag(8,"INDICATE LOAD"), " ", "15"x) ,
with 1 "AVGPROC-" cpu "%" 1 "PAGING-" page "/"
cpu = right( cpu+0, 3)
return cpu
paging:
/* how many pages per second is this LPAR doing? */
/* extra currenct OS paging activity */
sl = c2d(right(diag(0), 2))
cplevel = space(cp_id) sl
strlen = length(cplevel)
parse value translate(diag(8,"INDICATE LOAD"), " ", "15"x) ,
with 1 "AVGPROC-" cpu "%" 1 "PAGING-" page "/"
return page
rstorage:
parse value diag(8,"QUERY STORAGE") with . . rstor rstor? . "15"x
return rstor
configuration:
/* return machine configuration */
/* extract machine type etc. */
if compatibility > 2 then do
Parse Value Diag(8,'QUERY CPLEVEL') With ProdName .
Parse Value Diag(8,'QUERY CPLEVEL') With uptime , . . . . . . . ipltime
Parse Value Diag(8,'QUERY CPLEVEL') With ProdName .
Parse Value Diag(8,'QUERY CPLEVEL') With uptime , . . . . . . . ipltime
parse value stsi(1,1,1) with 49 type +4 ,
81 seq +16 ,
101 model +16 .
parse value stsi(2,2,2) with 33 lnum +2 , /* Partition number */
39 lcpus +2 , /* # of CPUs in the LPAR */
45 lname +8 /* partition name */
parse value stsi(3,2,2) with 39 vcpus +2 , /* # of CPUs in the v.m. */
57 cp_id +16
parse value c2d(lnum) c2d(lcpus) c2d(vcpus) right(seq,5) lname model ,
with lnum lcpus vcpus ser lname model .
blist = "- 2097 z10-EC 2098 z10-BC 2817 z196 2818 z114",
" 2827 zEC12 2828 zBC12 2964 z13 2965 z13s"
brand = strip(translate( word(blist, wordpos(type, blist)+1), " ", "-"))
end
return type
numcpus:
/* return number of CPUs in this LPAR */
parse value stsi(1,1,1) with 49 type +4 ,
81 seq +16 ,
101 model +16 .
parse value stsi(2,2,2) with 33 lnum +2 , /* Partition number */
39 lcpus +2 , /* # of CPUs in the LPAR */
45 lname +8 /* partition name */
parse value stsi(3,2,2) with 39 vcpus +2 , /* # of CPUs in the v.m. */
57 cp_id +16
parse value c2d(lnum) c2d(lcpus) c2d(vcpus) right(seq,5) lname model ,
with lnum lcpus vcpus ser lname model .
blist = "- 2097 z10-EC 2098 z10-BC 2817 z196 2818 z114",
" 2827 zEC12 2828 zBC12 2964 z13 2965 z13s 1090 zPDT 3096 z14"
brand = strip(translate( word(blist, wordpos(type, blist)+1), " ", "-"))
return lcpus
highrate:
/* when too many incoming messages per second exit server to avoid CPU overloading */
/* this function detects high msg rate for loop detection purposes
or for system load abatement purposes */
RATE = 0
parse ARG receivedmsg
currentime=Extime()
elapsedtime=currentime-starttimeSEC
if elapsedtime = 0 then elapsedtime = 3 /* some machines too fast */
rate = receivedmsg/elapsedtime
if rate > raterwatermark then do
call log ('Rate high watermark exceeded, rate: '||rate)
signal xit;
end
else do
return 0
end
return
detector:
/* detect if a message is looping by extracting middle of an incoming message-> comparing*/
parse ARG msg /* last message in */
Middle=center(prevmsg.1,20)
Middle=strip(middle) /* in case message <50 we will
have leading/trailing blanks, drop them */
Opos=pos(middle,msg) /* middle part in new message */
If opos>0 then do
prevmsg.1=msg
say "message looping detected.."
return -1
end
prevmsg.1=msg
return 1
whoami:
"id (stack"
pull whoamiuser . whoaminode . whoamistack
whoamistack=LEFT(whoamistack,5)
return
respond:
/* general TELL command for lookup */
parse ARG userid,node,response
'TELL' userid 'AT' node '-> 'response
totmessages=totmessages+1
return 0
inithistory:
history.1=""
history.2=""
history.3=""
history.4=""
history.5=""
history.6=""
history.7=""
history.8=""
history.9=""
history.10=""
history.11=""
history.12=""
history.13=""
history.14=""
history.15=""
history.16=""
history.17=""
history.18=""
history.19=""
history.20=""
history.21=""
history.22=""
history.23=""
history.24=""
history.25=""
history.26=""
history.27=""
history.28=""
history.29=""
history.30=""
history.31=""
history.32=""
history.33=""
history.34=""
history.35=""
RETURN 0
inserthistory:
/* insert history item and scroll */
parse ARG hmsg,pointer
if pointer < history.0 then do
history.pointer = hmsg
end
if pointer >= history.0 then do
/* ok, we need to scroll up */
do i = 1 to history.0
d = i + 1
history.i =history.d
end
history.z = hmsg/* insert msg at the bottom */
end
return 0
benchmark:
/* benchmark relative system speed with nqueen problem 8x8 */
elp=time('E')
bsolution=queen(8,1)
elp=Trunc(time('e')-elp,3) /* number of seconds */
return elp
QUEEN: PROCEDURE expose count
parse arg n,noprint
chess.0=copies('. + ',n%2)
chess.1=copies('+ . ',n%2)
chessAl='a b c d e f g h i j k l m n o p q r s t u v x y z'
count = 0
k = 1
a.k = 0
do while k>0
a.k = a.k + 1
do while a.k<= n & place(k) =0
a.k = a.k +1
end
if a.k > n then k=k-1
else do /* a.k <= n */
if k=n then do
count=count+1
end
else do
k=k+1
a.k=0
end
end
end
return count
place: procedure expose a. count
/* place queens on chess board for /benchmark command */
parse arg ps
do i=1 to ps-1
if a.i = a.ps then return 0
if abs(a.i-a.ps)=(ps-i) then return 0
end
return 1
authlog:
/* immutably log all new /bcast users (e.q logins) to immudb on RELAY server */
parse ARG auserid,anode
authuser=auserid||"@"||anode||":"
request='http://relayserv.dynu.net/cleanreq?arg=AUTHLOG%20'||authuser||' AUTH LOG A'
'WW2GET' request
'ERASE AUTH LOG A'
return 0
immulog:
/* immutably log all commands arriving from users */
parse ARG iuserid,inode,imsg
iuthuser=iuserid||"@"||inode||"_"||imsg||"-"
request='http://relayserv.dynu.net/cleanreq?arg=LOG%20'||iuthuser||' AUTH LOG A'
'WW2GET' request
'ERASE AUTH LOG A'
return 0
initlookup:
/* lookup initialization routimes */
whoamiuser="" /* for autoconfigure */
whoaminode=""
whomistack=""
call whoami /* who the fahma am I?? */
say 'Hello, I am: '||whoamiuser||' at '||whoaminode||' with '||whoamistack
localnode=whoaminode /* set localnode */
if compatibility > 2 then do /* must be z/VM , ie min requirement VM level*/
say 'All CPU avg: 'cpu '% Paging: 'paging()
say 'Machine type: 'configuration()' RAM: 'rstorage()
say 'Number of CPU: in LPAR: 'numcpus()
END
say ' '
say '****** LOG BELOW *******'
/* some simple logging for stats etc */
CALL log('LOOKUP '||lookupversion||' started. ')
Parse Value Diag(8,'QUERY TIME') With . . timenow tz tday tdate
/*-------------------------------------------*/
call inithistory
call log ('History initalized...')
call log ('Exact time in seconds: '||epochtime())
/* init double linked list of online users */
call @init
CALL log('List has been initialized.')
CALL log('List size: '||@size())
if @size() /= 0 then do
CALL log('Linked list init has failed! Abort ')
signal xit;
end
sysperf=benchmark()
CALL log('Benchmark performed. This machine speeed: '||sysperf)
CALL log('********** LOOKUP START **********')
say ' _ ____ ____ _ __ _ ____ '
say ' / \ / _ \/ _ \/ |/ // \ /\/ __\ '
say ' | | | / \|| / \|| / | | ||| \/| '
say ' | |_/\| \_/|| \_/|| \ | \_/|| __/ '
say ' \____/\____/\____/\_|\_\\____/\_/ '
say ' for VM/SP, VM/ESA and z/VM by Moshix '
say ' '
say ' Lookup now listening for requests... '
say ' '
say ' '
say ' Feel free to #CP DISC.... '
return
p: return word(arg(1), 1) /*pick the first word out of many items*/
sy: say;
say left('', 30) " " arg(1) ' ';
return
@init: $.@=;
@adjust: $.@=space($.@);
$.#=words($.@);
return
@hasopt: arg o;
return pos(o, opt)\==0
@size: return $.#
/* */
@del: procedure expose $.;
arg k,m;
call @parms 'km'
_=subword($.@, k, k-1) subword($.@, k+m)
$.@=_;
call @adjust;
return
@get: procedure expose $.; arg k,m,dir,_
call @parms 'kmd'
do j=k for m by dir while j>0 & j<=$.#
_=_ subword($.@, j, 1)
end /*j*/
return strip(_)
@parms: arg opt /*define a variable based on an option.*/
if @hasopt('k') then k=min($.#+1, max(1, p(k 1)))
if @hasopt('m') then m=p(m 1)
if @hasopt('d') then dir=p(dir 1);
return
@put: procedure expose $.;
parse arg x,k;
k=p(k $.#+1);
call @parms 'k'
$.@=subword($.@, 1, max(0, k-1)) x subword($.@, k);
call @adjust
return
@show: procedure expose $.;
parse arg k,m,dir;
if dir==-1 & k=='' then k=$.#
m=p(m $.#);
call @parms 'kmd';
say @get(k,m, dir);
return
list:
/* this is only as examples how to use the double linked list
for future expanesion of this program */
call sy 'initializing the list.' ; call @init
call sy 'building list: blue' ; call @put "blue"
call sy 'displaying list size.' ; say "list size="@size()
call sy 'forward list' ; call @show
call sy 'backward list' ; call @show ,,-1
call sy 'showing 4th item' ; call @show 4,1
call sy 'showing 5th & 6th items' ; call @show 5,2
call sy 'adding item before item 4: black' ; call @put "black",4
call sy 'showing list' ; call @show
call sy 'adding to tail: white' ; call @put "white"
call sy 'showing list' ; call @show
call sy 'adding to head: red' ; call @put "red",0
call sy 'showing list' ; call @show
return