# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"\s(?<filter>PFE_FW_SYSLOG_ETH.*:)\sFW:\s(?<src_interface>[^ ]+)\s+(?<action>\w+).*(?<transport>tcp|udp|icmp)\s(?<src>(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$)\s(?<dst>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$)\s+(?<src_port>[^ ]+)\s+(?<dest_port>[^ ]+)\s+"
test_str = ("Aug 2 09:16:37 10.10.10.10 Aug 2 09:16:37 externals-cl fpc1 PFE_FW_SYSLOG_ETH_IP: FW: xe-1/0/0.0 D 0800 34:62:5a:74:8f:c3 -> 64:b2:9a:7e:1b:4a tcp 184.154.189.91 10.1.1.1 41860 465 (1 packets)\n"
" \n"
" Aug 2 09:23:13 10.10.10.10 Aug 2 09:23:13 externals-fq fpc0 PFE_FW_SYSLOG_ETH_IP: FW: xe-0/0/0.447 D 03af:0700 a6:e7:f2:2e:13:c7 -> 72:a3:9c:3a:22:00 icmp 185.176.27.46 10.1.1.1 44927 53389 (1 packets)\n"
" \n"
" Aug 2 10:00:42 10.10.10.10 Aug 2 10:00:42 externals-fq fpc2 PFE_FW_SYSLOG_ETH_IP: FW: et-2/1/0.716 D 02cc:0800 52:a2:2f:7a:1d:5a -> 84:c9:2b:9e:24:e6 icmp 10.1.1.2 10.1.1.1 3 3 (1 packets)")
matches = re.finditer(regex, test_str, re.MULTILINE)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
# Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html