Allow regular expression to change single character in locations

Added ability in r12486.

yah, incorrectly encoded utf.
should be:

50 C3 A4 72 6E 75

instead

50 43 24 72 6E 75

Hello Mike,

Here it is:

.1.3.6.1.2.1.1.6.0 = Hex-STRING: 50 43 24 72 6E 75 

This not very usefull, I need to see snmp output.. Make please this minimum snmp walk:

snmpwalk -v2c -c <community> -t 3 -Cc --hexOutputLength=0 -ObentxU <hostname> .1.3.6.1.2.1.1.6

Device is cisco switch, I dont see any options to change encoding on cisco devices.

[sysContact]                => string(0) ""
  [version]                   => string(9) "15.2(7)E2"
  [hardware]                  => string(16) "WS-C2960CX-8TC-L"
  [vendor]                    => string(5) "Cisco"
  [features]                  => string(11) "UNIVERSALK9"
  [location]                  => string(1; UTF-8) "ä"
  [os]                        => string(3) "ios"
  [status]                    => string(1) "1"
  [status_type]               => string(2) "ok"
  [ignore]                    => string(1) "0"
  [ignore_until]              => null

location map ability is not for this.

It seems as incorrect UTF-8 encoding on device.
Can you attach poller debug:

./poller.php -d -m system -h <device>

General questions and device support can be discussed in our Discord channel, click here to join.

Please make and attach additional information about the device:

• full snmp dump from device:

  snmpwalk -v2c -c <community> -t 3 -Cc --hexOutputLength=0 -ObentxU <hostname> .1 > myagent.snmpwalk

  snmpwalk -v2c -c <community> -t 3 -Cc --hexOutputLength=0 -ObentxU <hostname> .1.3.6.1.4.1 >> myagent.snmpwalk

  If device not support SNMP version 2c, replace -v2c with -v1.

• If you have problems with discovery or poller processes, please do and attach these debugs:

  ./discovery.php -d -h <device>

  ./poller.php -d -h <device>

• additionally attach device and/or vendor specific MIB files

This comment is added automatically.