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I do not know what the correct way is here to publish/suggest patches.
I implemented pjsip for this plugin:

--- check_asterisk_peers 2025-04-10 08:45:57.319369355 +0200
+++ check_asterisk_peers_pjsip 2025-04-10 09:11:59.703011415 +0200
@@ -3,6 +3,8 @@
# Check asterisk peers plugin for Nagios.
# Written by Chad Phillips (chad@apartmentlines.com)
# Last Modified: 2009-05-02
+# modified by Paul Neuwirth (mail@paul-neuwirth.nl) to include pjsip
+# 2025-04-10

ASTERISK=/usr/sbin/asterisk

@@ -13,7 +15,7 @@

print_usage() {
echo "
-Usage: check_asterisk_peers [--type | -t ] [--peers | -p ] [--registrations | -r ] [--verify-peers] [--verify-registrations] [--config-file ]
+Usage: check_asterisk_peers [--type | -t ] [--peers | -p ] [--registrations | -r ] [--verify-peers] [--verify-registrations] [--config-file ]
Usage: check_asterisk_peers --help | -h

Description:
@@ -62,6 +64,7 @@
Default value is based on the --type setting:

sip: /etc/asterisk/sip.conf
+ pjsip: /etc/asterisk/pjsip.conf
iax: /etc/asterisk/iax.conf

--help | -h Print this help and exit.
@@ -227,12 +230,14 @@
done

# Make sure we have a valid peer type.
-if [ "$peer_type" != "" ] && [ "$peer_type" != "sip" ] && [ "$peer_type" != "iax" ]; then
- echo "Peer type must be one of: sip, iax."
+if [ "$peer_type" != "" ] && [ "$peer_type" != "sip" ] && [ "$peer_type" != "pjsip" ] && [ "$peer_type" != "iax" ]; then
+ echo "Peer type must be one of: sip, iax, pjsip."
exit $STATE_UNKNOWN
# Convert iax type into internal iax2 type for the Asterisk executable.
elif [ "$peer_type" = "iax" ]; then
peer_type=iax2
+elif [ "$peer_type" = "pjsip" ]; then
+ peer_type=pjsip
# Default type is SIP.
else
peer_type=sip
@@ -247,6 +252,8 @@
if [ "$conf_file" = "" ]; then
if [ "$peer_type" = "iax2" ]; then
conf_file=/etc/asterisk/iax.conf
+ elif [ "$peer_type" = "pjsip" ]; then
+ conf_file=/etc/asterisk/pjsip.conf
else
conf_file=/etc/asterisk/sip.conf
fi
@@ -258,10 +265,15 @@
if [ "$registrations" ]; then
for r in $registrations
do
- REGISTRATION_FORMAT_CORRECT=`echo "$r" | grep ".\+@.\+"`
- if [ ! "$REGISTRATION_FORMAT_CORRECT" ]; then
- echo "Registration $r is not in the valid username@uri format."
- exit $STATE_UNKNOWN
+ if [ "$peer_type" != "pjsip" ]; then
+ REGISTRATION_FORMAT_CORRECT=`echo "$r" | grep ".\+@.\+"`
+ if [ ! "$REGISTRATION_FORMAT_CORRECT" ]; then
+ echo "Registration $r is not in the valid username@uri format."
+ exit $STATE_UNKNOWN
+ fi
+ else
+ #no limitations for pjsip registrations, afaik
+ REGISTRATION_FORMAT_CORRECT=1
fi
done
fi
@@ -277,31 +289,55 @@
for p in $peers
do
if [ "$verify_peers" ]; then
- peer_verified=`echo "$all_config" | grep "^\[${p}\]$"`
+ peer_verified=`echo "$all_config" | grep "^\[${p}\].*$"`
else
peer_verified=1
fi
if [ "$peer_verified" ]; then
# Fetch the data from asterisk.
- command_output=`$ASTERISK -rx "$peer_type show peer $p" 2>&1`
- check_asterisk_result $? "$command_output"
- status=`echo "$command_output" | grep "^[[:space:]]*Status[[:space:]]*:" | awk '{print $3;}'`
- if [ "$status" = "OK" ]; then
- if [ "$test_ok" ]; then
- test_ok="${test_ok}, $p"
+ if [ "$peer_type" = "pjsip" ]; then
+ command_output=`$ASTERISK -rx "$peer_type show endpoint $p" 2>&1`
+ check_asterisk_result $? "$command_output"
+ status=`echo "$command_output" | grep "^\sEndpoint:\s*$p.*" | awk -F' +' '{print $3;}'`
+ if [ "$status" = "Not in use" ] || [ "$status" = "In use" ]; then
+ if [ "$test_ok" ]; then
+ test_ok="${test_ok}, $p"
+ else
+ test_ok="$p"
+ fi
else
- test_ok="$p"
+ if [ "$status" ]; then
+ status_error="$status"
+ else
+ status_error="Not found"
+ fi
+ if [ "$test_errors" ]; then
+ test_errors="${test_errors}, ${p}: $status_error"
+ else
+ test_errors="${p}: $status_error"
+ fi
fi
else
- if [ "$status" ]; then
- status_error="$status"
- else
- status_error="Not found"
- fi
- if [ "$test_errors" ]; then
- test_errors="${test_errors}, ${p}: $status_error"
+ command_output=`$ASTERISK -rx "$peer_type show peer $p" 2>&1`
+ check_asterisk_result $? "$command_output"
+ status=`echo "$command_output" | grep "^[[:space:]]*Status[[:space:]]*:" | awk '{print $3;}'`
+ if [ "$status" = "OK" ]; then
+ if [ "$test_ok" ]; then
+ test_ok="${test_ok}, $p"
+ else
+ test_ok="$p"
+ fi
else
- test_errors="${p}: $status_error"
+ if [ "$status" ]; then
+ status_error="$status"
+ else
+ status_error="Not found"
+ fi
+ if [ "$test_errors" ]; then
+ test_errors="${test_errors}, ${p}: $status_error"
+ else
+ test_errors="${p}: $status_error"
+ fi
fi
fi
else
@@ -314,8 +350,8 @@
done
fi

-# Check registrations.
-if [ "$registrations" ]; then
+# Check registrations. not pjsip
+if [ "$peer_type" != "pjsip" ] && [ "$registrations" ]; then
# Fetch the data from asterisk.
command_output=`$ASTERISK -rx "$peer_type show registry" 2>&1`
check_asterisk_result $? "$command_output"
@@ -364,6 +400,50 @@
done
fi

+# Check registrations. pjsip
+if [ "$peer_type" = "pjsip" ] && [ "$registrations" ]; then
+ # Fetch the data from asterisk.
+ command_output=`$ASTERISK -rx "$peer_type show registrations" 2>&1`
+ check_asterisk_result $? "$command_output"
+ for r in $registrations
+ do
+ if [ "$verify_registrations" ]; then
+ # best what can be done without getting too deep into config file (type=registration might be part of a template...)
+ registration_verified=`echo "$all_config" | grep "^\[${r}\].*$"`
+ else
+ registration_verified=1
+ fi
+ if [ "$registration_verified" ]; then
+ # This regex isn't perfect, but it does the trick ok.
+ status=`echo "$command_output" | grep "^\s$r\/.*" | awk -F' +' '{ print $3;}'`
+ if [ "$status" = "Registered" ]; then
+ if [ "$test_ok" ]; then
+ test_ok="${test_ok}, $r"
+ else
+ test_ok="$r"
+ fi
+ else
+ if [ "$status" ]; then
+ status_error="$status"
+ else
+ status_error="Not found"
+ fi
+ if [ "$test_errors" ]; then
+ test_errors="${test_errors}, ${r}: $status_error"
+ else
+ test_errors="${r}: $status_error"
+ fi
+ fi
+ else
+ if [ "$test_ok" ]; then
+ test_ok="${test_ok}, $r (not active)"
+ else
+ test_ok="$r (not active)"
+ fi
+ fi
+ done
+fi
+
if [ "$test_errors" ]; then
output="$output ERROR: $test_errors"
set_exit_status $STATE_CRITICAL
@@ -379,4 +459,4 @@
fi

echo "$output"
-exit $exitstatus
\ No newline at end of file
+exit $exitstatus