And improved script to check Mattermost LDAP config

improved-ldap-check.sh

#!/bin/bash

jq_cmd=jq
[[ $(type -P "$jq_cmd") ]] || { 
	echo "'$jq_cmd' command line JSON processor not found";
	echo "Please install on linux with 'sudo apt-get install jq'"
	echo "Please install on mac with 'brew install jq'"
	exit 1; 
}

ldapsearch_cmd=ldapsearch
[[ $(type -P "$ldapsearch_cmd") ]] || { 
	echo "'$ldapsearch_cmd' shell accessible interface to ldap not found";
	echo "Please install on linux with 'sudo apt-get install ldap-utils'"
	exit 1; 
}

if [[ -z ${1} ]]; then
	echo "We could not find a username";
	echo "usage: ./ldap-check.sh -u/-i/-g [username/ID attribute/groupname]"
	echo "example: ./ldap-check.sh -u john"
	echo "example: ./ldap-check.sh -i 77a65590-16b9-103b-86e5-bf7e5461059d"
	echo "example: ./ldap-check.sh -g admin-staff"
	exit 1;
fi

echo "Looking for config.json"

config_file=
if [[ -e "./config.json" ]]; then
	config_file="./config.json"
	echo "Found config at $config_file";
fi

if [[ -z ${config_file} && -e "./config/config.json" ]]; then
	config_file="./config/config.json"
	echo "Found config at $config_file";
fi

if [[ -z ${config_file} && -e "../config/config.json" ]]; then
	config_file="../config/config.json"
	echo "Found config at $config_file";
fi

if [[ -z ${config_file} ]]; then
	echo "We could not find config.json";
	exit 1;
fi

LdapServer=`cat $config_file | jq -r .LdapSettings.LdapServer`
LdapPort=`cat $config_file | jq -r .LdapSettings.LdapPort`
BindUsername=`cat $config_file | jq -r .LdapSettings.BindUsername`
BindPassword=`cat $config_file | jq -r .LdapSettings.BindPassword`

BaseDN=`cat $config_file | jq -r .LdapSettings.BaseDN`
UserFilter=`cat $config_file | jq -r .LdapSettings.UserFilter`
GroupFilter=`cat $config_file | jq -r .LdapSettings.GroupFilter`

IdAttribute=`cat $config_file | jq -r .LdapSettings.IdAttribute`
EmailAttribute=`cat $config_file | jq -r .LdapSettings.EmailAttribute`
LoginIdAttribute=`cat $config_file | jq -r .LdapSettings.LoginIdAttribute`
UsernameAttribute=`cat $config_file | jq -r .LdapSettings.UsernameAttribute`
FirstNameAttribute=`cat $config_file | jq -r .LdapSettings.FirstNameAttribute`
LastNameAttribute=`cat $config_file | jq -r .LdapSettings.LastNameAttribute`
PositionAttribute=`cat $config_file | jq -r .LdapSettings.PositionAttribute`

GroupDisplayNameAttribute==`cat $config_file | jq -r .LdapSettings.GroupDisplayNameAttribute`
GroupIdAttribute=`cat $config_file | jq -r .LdapSettings.GroupIdAttribute`

cat << HERE
Configuration Report:

Server:
 - LDAP Connection: $LdapServer:$LdapPort
 - LDAP Username: $BindUsername
 - LDAP Password: $BindPassword

LDAP:
 - Base DN: $BaseDN
 - User Filter: $UserFilter
 - Group Filter: $GroupFilter

User Attributes:
 - User ID: $IdAttribute
 - Email: $EmailAttribute
 - Username: $UsernameAttribute
 - Login: $LoginIdAttribute
 - First Name: $FirstNameAttribute
 - Last Name: $LastNameAttribute
 - Position: $PositionAttribute

Group Attributes:
 - Group ID: $GroupIdAttribute
 - Group Name: $GroupDisplayNameAttribute

HERE
echo "-------------------------"

SearchAttribute="$IdAttribute"
if [[ $1 == '-u' ]]; then
	SearchAttribute="$UsernameAttribute"
fi

if [[ -z ${UserFilter} ]]; then
	UserFilter="($SearchAttribute=$2)"
else
	UserFilter="(&($SearchAttribute=$2)$UserFilter)"
fi

if [[ -z ${GroupFilter} ]]; then
	GroupFilter="($GroupIdAttribute=$2)"
else
	GroupFilter="(&($GroupIdAttribute=$2)$GroupFilter)"
fi

if [[ $1 == '-u' ]]; then

	cmd_to_run="$ldapsearch_cmd -LLL -x -h $LdapServer -p $LdapPort -D \"$BindUsername\" -w \"$BindPassword\" -b \"$BaseDN\" \"$UserFilter\" $IdAttribute $UsernameAttribute $EmailAttribute $LoginIdAttribute $FirstNameAttribtue $LastNameAttribute $PositionAttribute"
	echo $cmd_to_run
	echo "-------------------------"
	eval $cmd_to_run

elif [[ $1 == '-g' ]]; then

	cmd_to_run="$ldapsearch_cmd -LLL -x -h $LdapServer -p $LdapPort -D \"$BindUsername\" -w \"$BindPassword\" -b \"$BaseDN\" \"$GroupFilter\""
	echo $cmd_to_run
	echo "-------------------------"
	eval $cmd_to_run

else 
	echo "User or Group not specified"
fi