Hi, I'm searching for a possibility to have the rawlog feature in lua, which would be much easier for processing. Currently Dovecot, when activating rawlog for a user, writes everything to disk (which creates I/O), and I have to somehow read it from there. That's a bit complicated, because I have to get notified via inotify or similar when there are new files created, and then I have to start a "tail" or "epoll" mechanism on the files to get the contents in more or less real time (IMAP sessions can be multiple hours or days). It would be much easier to hook to the "raw request and response events" inside Dovecot and have the rawlog-data in a lua script, where I can prepare it and send it to another maschine for monitoring/collection/analysis/statistics or similar, for example via HTTP. Having the rawlog data available in lua would make things a lot easier. Is there any possibility at the moment to create a lua script and "hook" to those "request and response events"? If not, would it be possible to add that feature in the future? Kind regards Michael -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20220728/5da8109c/attachment-0001.htm>
Paul Kudla (SCOM.CA Internet Services Inc.)
2022-Jul-28 11:01 UTC
rawlog data in a lua script
Hi - I use this python script to capture a socket (ie the log file) and
then send it to syslog, i use this for all the systems that do not
really support syslogging (apache etc)
basic useage
/usr/bin/nohup /programs/common/capture -s
/usr/local/apache2/logs/httpd-access.log -l httpd -d 10.228.0.6:514 -p
httpd & > /dev/null
i typically run this at startup in rc.local
hope this helps :
----------------------------------------------------------------------
## cat capture
#!/usr/local/bin/python3
# -*- coding: UTF-8 -*-
import os,sys,socket
import datetime,time
from optparse import OptionParser
from lib import *
USAGE_TEXT = '''\
usage: %%prog %s[options]
'''
parser = OptionParser(usage=USAGE_TEXT % '', version='0.4')
parser.add_option("-s", "--socket",
dest="socket_file", help="Socket
File to Capture")
parser.add_option("-l", "--label", dest="label",
help="Syslog Label to
Insert")
parser.add_option("-d", "--destination",
dest="destination",
help="Syslog Destibnation Server:Port")
parser.add_option("-p", "--pid", dest="pid",
help="PID Process Name")
#parser.add_option("-e", "--email", dest="email",
help="Additional Email
To")
#parser.add_option("-t", "--temp", dest="tempdir",
help="Local Temp
Directory")
options, args = parser.parse_args()
print (options.socket_file)
print (options.label)
print (options.destination)
print (options.pid)
if options.socket_file == None :
print ('Missing Socket File Information')
sys.exit()
if options.label == None :
print ('Missing Syslog Label Information')
sys.exit()
if options.destination == None :
print ('Missing Syslog Destination host:[port]')
sys.exit()
if options.pid == None :
print ('Missing Syslog Pid Process Name')
sys.exit()
#try local syslog (/var/run/log)
UDP_IP = options.destination.split(':')
if len(UDP_IP) == 2 : #Set Port
UDP_PORT = int(UDP_IP[1])
else :
UDP_PORT = 514 #Default
UDP_IP = UDP_IP[0] #Server
#MESSAGE = str("<22>Mar 27 04:16:16 es-scom[12345] offsite.scom.ca
su:
Hello, World!")
#MESSAGE = str("<183>Mar 27 16:17:41 scom-live[72178]: Hello
World")
print("UDP target IP: %s" % UDP_IP)
print("UDP target port: %s" % UDP_PORT)
#print("message: %s" % MESSAGE)
count = 10
#sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
#sock.sendto(MESSAGE, (UDP_IP, UDP_PORT))
#sock.sendto(bytes(MESSAGE, "utf-8"), (UDP_IP, UDP_PORT))
#sock.close()
#sys.exit()
#def read_commands():
try:
print ("Creating read pipe... %s" %options.socket_file )
os.mkfifo(options.socket_file) # Create pipe
print ("Pipe %s created!" %options.socket_file )
except:
print ("Pipe %s already exists" %options.socket_file )
#chmod 777 the file so everyone can talk to it
os.system('/bin/chmod 777 %s' %options.socket_file)
with open(options.socket_file, "r") as pipecmd:
while True:
time.sleep(.001)
try:
line = pipecmd.readline()
if line != '' : #New Data
if line == '\n' :
continue
print ('Raw Text : %s' %line)
encoded_string = line.encode("ascii",
"ignore")
line = encoded_string.decode()
line = create_ascii(line)
line = line.ascii
print ('Line after ASCII : %s' %line)
print ( 'Line Count : %s' %len(line) )
#line = data
#go get my pid
pid_process = '0'
if options.pid == 'postfix' : #its a
diverted postfix process get the actual pid from raw text
pid_process =
line.split('[',1)[1].split(']',1)[0]
else :
command = commands('/bin/ps
-axww | /usr/bin/grep %s' %options.pid)
print ()
#print (command.output)
for n in range
(0,len(command.output)) :
if '/bin/ps -axww |
/usr/bin/grep' not in command.output[n] and '/usr/bin/grep' not in
command.output[n] and '/usr/local/bin/python3' not in command.output[n]
:
pid_process =
( command.output.split(' ')[0] ) #whats left should be my process ?
break
print ('PID Process : %s ' %pid_process
)
if options.destination == 'local' :
#Send to log here
print ('Sending to Local
Syslog')
log = open
('/var/run/log','w')
log.write ('hello')
log.close()
sys.exit()
else : #Send via socket
#Make the line in freebsd
syslog format
MESSAGE = '<' + str(count) +
'>' + str( time.strftime("%b %d %H:%M:%S ") ) +
str(options.label) +
'[' + str(pid_process) + ']: ' + str(line)
print ('Sent : %s' %MESSAGE )
count = count + 1
if count > 255 :
count = 10
# send to udp logger port specified
sock =
socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(bytes(MESSAGE,
"utf-8"), (UDP_IP, UDP_PORT))
sock.close()
else : #No data
pass
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname =
os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
e = str(e) + '\n\n' + str(exc_type) +
'\n' +
str(fname) + '\n' + str(exc_tb.tb_lineno)
print ('\n\nCaught Exception : %s' %e )
print ("Could not read cmd pipe, skipping
...")
sys.exit()
-----------------------------------------------------------------------
and lib.py
----------------------------------------------------------------------
## cat lib3.py
#Python Library written by paul kudla (c) 2011
#Load the librarys for the system
import os,sys,time,socket
import string
from ftplib import FTP
from decimal import *
from datetime import date
import datetime
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
from email import encoders
import subprocess
getcontext().prec = 20
class commands:
def __init__(self,command) :
self.command = command
#print (self.command)
self.output = 'Error'
self.status = '255'
#sample
#rc, gopath = subprocess.getstatusoutput('ls -a')
self.status, self.output =
subprocess.getstatusoutput(self.command)
try:
self.cr = self.output.split('\n')
except :
self.cr = []
try:
self.count = len(self.cr)
except :
self.count = 0
self.status = int(self.status)
#return count=number of lines, cr = lines split,
getoutput = actual output returned, status = return code
return
#Email with attachment
class sendmail:
def __init__(self, send_from, send_to, send_subject, send_text,
send_files):
#send_from, send_to, send_subject, send_text, send_files):
#print ('lib.py sending email')
assert type(send_to)==list
assert type(send_files)==list
msg = MIMEMultipart()
msg['From'] = send_from
msg['To'] = COMMASPACE.join(send_to)
msg['Date'] = formatdate(localtime=True)
msg['Subject'] = send_subject
msg.attach( MIMEText(send_text) )
for f in send_files:
part = MIMEBase('application',
"octet-stream")
part.set_payload( open(f,"rb").read() )
Encoders.encode_base64(part)
part.add_header('Content-Disposition',
'attachment; filename="%s"' % os.path.basename(f))
msg.attach(part)
try : #Send Local?
smtp = smtplib.SMTP('mail.local.scom.ca')
#smtp.login('backup at
scom.ca','522577')
#print ('Sending Email to : %s' %send_to)
smtp.sendmail(send_from, send_to, msg.as_string())
smtp.close()
except :
smtp = smtplib.SMTP('mail.scom.ca')
smtp.login('backup at
scom.ca','522577')
#print ('Sending Email to : %s' %send_to)
smtp.sendmail(send_from, send_to, msg.as_string())
smtp.close()
class getdatetime:
def __init__(self):
self.datetime = datetime.date.today()
self.datetime_now = datetime.datetime.now()
self.date = str( time.strftime("%Y-%m-%d %H:%M:%S") )
self.date_long = str( time.strftime("%Y-%m-%d
%H:%M:%S") )
self.date_short = str( time.strftime("%Y-%m-%d") )
self.time = str( time.strftime("%H:%M:%S") )
self.date_time_sec = self.datetime_now.strftime
("%Y-%m-%d %H:%M:%S.%f")
#Return edi senddate string (short) 2011-10-31 into 111031
class create_ascii :
def __init__(self,string_data) :
self.string_data = str(string_data)
import string
self.printable = set(string.printable)
self.list = list(filter(lambda x: x in self.printable,
self.string_data))
#print (self.list)
self.ascii = ''
for n in range (0,len(self.list)) :
self.ascii = self.ascii + self.list[n]
self.ascii = str(self.ascii)
return
class edi_send_date_short:
def __init__(self, senddate):
self.date = senddate
self.result = self.date[2] + self.date[3] +
self.date[5] + self.date[6] + self.date[8] + self.date[9]
def __str__(self):
return '%s' % self.result
##Return edi senddate string (long) 2011-10-31 into 20111031
class edi_send_date_long:
def __init__(self, senddate):
self.date = senddate
self.result1 = self.date[0] + self.date[1] +
self.date[2] + self.date[3] + self.date[5] + self.date[6] + self.date[8]
+ self.date[9]
self.result2 = self.date[2] + self.date[3] +
self.date[5] + self.date[6] + self.date[8] + self.date[9]
def __str__(self):
return '%s' % (self.result1,self.result2)
class gpsdeg:
def __init__(self, dms):
self.dms = dms
self.is_positive = self.dms >= 0
self.dms = abs(self.dms)
self.minutes,self.seconds = divmod(self.dms*3600,60)
self.degrees,self.minutes = divmod(self.minutes,60)
self.degrees = self.degrees if self.is_positive else
-self.degrees
def __str__(self):
return '%s' % (self.degrees,self.minutes,self.seconds)
class degdir:
def __init__(self, degrees):
self.direction_data =
['N','348.75','11.25','NNE',
'11.25','33.75','NE','33.75','56.25','ENE',
'56.25','78.75','E','78.75','101.25','ESE','101.25','123.75','SE','123.75','146.25','SSE','146.25','168.75','S','168.75','191.25','SSW','191.25','213.75','SW','213.75','236.25','WSW','236.25','258.75','W','258.75','281.25','WNW','281.25','303.75','NW','303.75','326.25','NNW','326.25','348.75']
def __str__(self):
return '%s' % (self.direction)
class gettime:
def __init__(self):
self.uu = time.localtime()
self.todaystime = str(self.uu[3]) #get the hr
if int(self.uu[3]) < 10: #add a zero
self.todaystime = '0' + self.todaystime
if int(self.uu[4]) < 10: #add a zero in front
self.todaystime = self.todaystime
+":0"+str(self.uu[4])
else:
self.todaystime = self.todaystime
+":"+str(self.uu[4])
def __str__(self):
return self.todaystime
class array2dbstring:
def __init__(self,array):
self.data = array
for self.nn in range(0,len(self.data)):
print ('Data %s \t\t %s' %
(str(self.data[self.nn]),str( type(self.data[self.nn])) ) ) #change all
data into strings
self.a = type(self.data[self.nn])
self.a = str(self.a)
if 'Decimal' in self.a :
self.n = str(self.data[self.nn])
#self.n = self.n.lstrip("'")
#self.n = self.n.rstrip("'")
#self.data[self.nn] =
float(self.data[self.nn])
self.data[self.nn] = str('0.00')
print (self.n)
if 'NoneType' in self.a :
self.data[self.nn] = ''
if 'datetime.datetime' in self.a :
#self.data[self.nn] =
str(self.data[self.nn])
#self.data[self.nn].replace
self.data[self.nn] = '2012-01-25
00:00:00'
self.data = str(self.data)
self.data = self.data.lstrip('[')
self.data = self.data.rstrip(']')
self.data =
self.data.replace("'NULL'","NULL")
#self.data = self.data.replace(" '',",
",")
#self.data = self.data.replace("
'0.00'","'100'")
def __str__(self):
return self.data
class get_hostname:
def __init__(self):
self.hostname = socket.gethostname()
----------------------------------------------------------------------------
Happy Thursday !!!
Thanks - paul
Paul Kudla
Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3
Toronto 416.642.7266
Main?1.866.411.7266
Fax?1.888.892.7266
Email?paul at scom.ca
On 7/28/2022 6:17 AM, dovecot-bounces at dovecot.org
wrote:> Hi,
> I'm searching for a possibility to have the rawlog feature in lua,
which
> would be much easier for processing. Currently Dovecot, when activating
> rawlog for a user, writes everything to disk (which creates I/O), and I
> have to somehow read it from there. That's a bit complicated, because I
> have to get notified via inotify or similar when there are new files
> created, and then I have to start a "tail" or "epoll"
mechanism on the
> files to get the contents in more or less real time (IMAP sessions can
> be multiple hours or days).
> It would be much easier to hook to the "raw request and response
events"
> inside Dovecot and have the rawlog-data in a lua script, where I can
> prepare it and send it to another maschine for
> monitoring/collection/analysis/statistics or similar, for example via HTTP.
> Having the rawlog data available in lua would make things a lot easier.
> Is there any possibility at the moment to create a lua script and
"hook"
> to those "request and response events"? If not, would it be
possible to
> add that feature in the future?
> Kind regards
> Michael
> I'm searching for a possibility to have the rawlog feature in lua, which would be much easier for processing. > > It would be much easier to hook to the "raw request and response events" inside Dovecot and have the rawlog-data in a lua script, > where I can prepare it and send it to another maschine for monitoring/collection/analysis/statistics or similar, for example via HTTP.rsyslog has this feature (omprog) allowing you to setup any script/program for it to pipe logs to in real time. https://www.rsyslog.com/doc/master/configuration/modules/omprog.html https://github.com/rsyslog/rsyslog/blob/master/plugins/external/INTERFACE.md Works similar in concept to postfix policy servers if you are familiar with them.