More info on -i flag
This commit is contained in:
Clemens Schwaighofer
257
user_create.sh
Executable file
257
user_create.sh
Executable file
@@ -0,0 +1,257 @@
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#!/bin/bash
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# * input file
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# user_list.txt
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# <ignored id>;<user name>;<group>[,sub group,sub group];[override password];[override hostname];[override ssh key type]
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# lines with # are skipped
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# already created users are skipped
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# Mandatory: <ignored id>;<user name>;<group>
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# * output file
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# <date>;<target connect host name>;<hostname>;<username>;<password>
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# If already existing PEM key is used then <password> is [ALREADY SET]
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#
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# * PEM KEY
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# <hostname>#<group>#<user>#<ssh key type>.pem
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# * PUBLIC KEY
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# <hostname>#<group>#<user>#<ssh key type>.pem.pub
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# stored as zip in
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# zip/
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#
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# If a previously exsting PEM key should be used, put the public pem file
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# into the ssh-keygen/ folder
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# They pem pub key must follow the set rules above
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# SET TO 1 to TEST [will no create user/group/folder]
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TEST=0; # no creation except ssh keys
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INFO=0; # no creation of anything, just print info strings
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while getopts ":ti" opt; do
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case "${opt}" in
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t|test)
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TEST=1;
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;;
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i|info)
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INFO=1;
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;;
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esac;
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done;
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# hostname for output file only
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host=$(hostname);
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timesamp=$(date +%Y%m%d-%H%M%S)
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# character to set getween info blocks
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separator="#";
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# base folder for all data
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root_folder=$(pwd)'/';
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input_file='user_list.txt';
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output_file="user_password.${timesamp}.txt";
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output_zip_folder='zip/';
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output_zip="users.${timesamp}.zip"
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ssh_keygen_folder='ssh-keygen/';
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ssh_keygen_folder_created_pub='ssh-keygen-created-pub/';
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ssh_keytype='ed25519';
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# check if ssh key folder exists
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if [ ! -d "${root_folder}${ssh_keygen_folder}" ]; then
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mkdir "${root_folder}${ssh_keygen_folder}";
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fi;
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# check if zip folder is missing
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if [ ! -d "${root_folder}${output_zip_folder}" ]; then
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mkdir "${root_folder}${output_zip_folder}";
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fi;
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# check if password generate software is installed
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if [ ! command -v pwgen &> /dev/null ]; then
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echo "Missing pwgen application, aborting";
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exit;
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fi;
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# check for zip
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if [ ! command -v zip &> /dev/null ]; then
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echo "Missing zip application, aborting";
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exit;
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fi;
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# check if user list file exists
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if [ ! -f "${root_folder}${input_file}" ]; then
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echo "Missing ${root_folder}${input_file}";
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exit;
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fi;
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# make sure my own folder is owned by root and 600 (except for testing)
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if [ $(stat -c %a .) != "600" ]; then
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echo "!!!! RECOMMENDED TO HAVE BASE FOLDER SET TO '600' AND USER 'root' !!!!"
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fi;
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if [ $(whoami) != "root" ]; then
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if [ ${TEST} -eq 0 ] && [ ${INFO} -eq 0 ]; then
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echo "Script must be run as root user";
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exit;
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else
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echo "!!!! Script must be run as root user !!!!";
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fi;
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fi;
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# create users
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cat "${root_folder}${input_file}" |
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while read i; do
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# skip rows start with # (comment)
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if [[ "${i}" =~ ^\# ]]; then
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continue;
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fi;
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# make lower case, remove spaces
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user=$(echo "${i}" | cut -d ";" -f 2 | tr A-Z a-z | tr -d ' ');
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_group=$(echo "${i}" | cut -d ";" -f 3 | tr A-Z a-z | tr -d ' ');
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group=$(echo "${_group}" | cut -d "," -f 1);
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sub_group="";
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sub_group_opt="";
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# check if "," inside and extract sub groups
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if [ -z "${_group##*,*}" ]; then
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sub_group=$(echo "${_group}" | cut -d "," -f 2-);
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sub_group_opt=" -G ${sub_group}";
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fi;
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# override host name, lowercase and spaces removed
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_hostname=$(echo "${i}" | cut -d ";" -f 5 | tr A-Z a-z | tr -d ' ');
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if [ -z "${_hostname}" ]; then
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hostname=${host};
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else
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hostname=${_hostname};
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fi;
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# do we have a password preset
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_password=$(echo "${i}" | cut -d ";" -f 4);
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_ssh_keytype=$(echo "${i}" | cut -d ";" -f 6 | tr A-Z a-z | tr -d ' ');
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if [ "${_ssh_keytype}" = "rsa" ]; then
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ssh_keytype="${_ssh_keytype}";
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#echo "[!!] BACKWARDS COMPATIBLE RSA TYPE SELECTION [!!]";
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fi;
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# user & group not set
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if [ -z "${user}" ] || [ -z "${_group}" ]; then
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echo "[!!!!!] Missing user or group entry for ${user}/${_group}";
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echo "[*** ABORT RUN ***]"
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break;
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fi;
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# SSH file name part without folder
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ssh_keygen_id="${hostname}${separator}${group}${separator}${user}${separator}${ssh_keytype}.pem";
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# the full file including folder name
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ssh_keyfile="${root_folder}${ssh_keygen_folder}${ssh_keygen_id}";
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# publ file if new
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ssh_keyfile_pub="${ssh_keyfile}.pub";
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# check existing pub file
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ssh_keyfile_check_pub="${root_folder}${ssh_keygen_folder_created_pub}${ssh_keygen_id}.pub";
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if [ ${INFO} -eq 1 ]; then
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# test if pub file exists or not, test if user exists
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echo -n "User: '${user}:${group}(${sub_group})', SSH: ${ssh_keygen_id}";
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if getent passwd ${user} > /dev/null 2>&1; then
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echo -n ", User exists";
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fi;
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if [ -f "${ssh_keyfile_pub}" ]; then
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echo -n ", SSH Pub key OK";
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fi;
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# line break
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echo "";
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continue;
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fi;
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# add group for each entry in _group
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for create_group in ${_group//,/ }; do
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if [ ${TEST} -eq 0 ]; then
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groupadd -f ${create_group};
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else
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echo "$> groupadd -f ${create_group}";
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fi;
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done;
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# check if user is not already created
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if getent passwd ${user} > /dev/null 2>&1; then
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echo "-- Skip '${user}:${group}(${sub_group})'";
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else
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echo "++ Create '${user}:${group}(${sub_group})'";
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if [ ${TEST} -eq 0 ]; then
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useradd -s /bin/bash -g ${group}${sub_group_opt} -m ${user};
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else
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echo "$> useradd -s /bin/bash -g ${group}${sub_group_opt} -m ${user}";
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fi;
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fi;
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skip_ssh=0;
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# if public pem already exists skip creation
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if [ ! -f "${ssh_keyfile_check_pub}" ]; then
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# Note we only create a password if we need it
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# password + store pwgen 10 1 -1
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if [ -z "${_password}" ]; then
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password=$(printf "%s" $(pwgen 10 1));
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else
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echo "! Override password set";
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password=${_password};
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fi;
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# create SSH key
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echo " > Create ssh key-pair '${ssh_keyfile}'";
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if [ ${TEST} -eq 0 ]; then
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ssh-keygen \
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-t ${ssh_keytype} \
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-f "${ssh_keyfile}" \
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-C "${hostname}: ${user}@${group}" \
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-a 100 -N "${password}"
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else
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echo "$> ssh-keygen -t ${ssh_keytype} -f ${ssh_keyfile} -C ${hostname}: ${user}@${group} -a 100 -N ${password}";
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fi;
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else
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found=$(grep "$(cat ${ssh_keyfile_check_pub})" /home/${user}/.ssh/authorized_keys);
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if [ ! -z "${found}" ]; then
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skip_ssh=1;
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# override previously set with stored one
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ssh_keyfile_pub=${ssh_keyfile_check_pub};
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echo "-- Skip SSH Key creation: ${ssh_keygen_id}.pub";
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else
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echo " < Use existing public ssh key '${ssh_keygen_id}.pub'";
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# Password already set notification
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fi;
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password="[ALREADY SET]";
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fi;
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if [ ${skip_ssh} -eq 0 ]; then
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# write login info to output file
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if [ ${TEST} -eq 0 ]; then
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echo $(date +"%F %T")";"${host}";"${_hostname}";"${user}";"${password} >> ${root_folder}${output_file};
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else
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echo $(date +"%F %T")";"${host}";"${_hostname}";"${user}";"${password} >> ${root_folder}${output_file}".TEST";
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fi;
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# create the SSH foler and authorized access file with correct permissions
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echo " > Create .ssh folder";
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if [ ${TEST} -eq 0 ]; then
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mkdir /home/${user}/.ssh/;
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else
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echo "$> mkdir /home/${user}/.ssh/";
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fi;
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echo " > Add public into authorized_keys";
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if [ ${TEST} -eq 0 ]; then
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cat "${ssh_keyfile_pub}" > /home/${user}/.ssh/authorized_keys;
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else
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echo "$> cat ${ssh_keyfile_pub} > /home/${user}/.ssh/authorized_keys";
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fi;
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echo " > Secure folder .ssh and authorized_keys file";
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if [ ${TEST} -eq 0 ]; then
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chown -R ${user}:${group} /home/${user}/.ssh/;
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chmod 700 /home/${user}/.ssh/;
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chmod 600 /home/${user}/.ssh/authorized_keys;
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else
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echo "$> chown -R ${user}:${group} /home/${user}/.ssh/";
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echo "$> chmod 700 /home/${user}/.ssh/";
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echo "$> chmod 600 /home/${user}/.ssh/authorized_keys";
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fi;
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fi;
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done;
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# End before anything because this is just info run
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if [ ${INFO} -eq 1 ]; then
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exit;
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fi;
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# zip everything and remove data in ssh key folder, delete output file with passwords
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zip -r \
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"${root_folder}${output_zip_folder}${output_zip}" \
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"${input_file}" \
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"${output_file}" \
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"${ssh_keygen_folder}" \
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-x\*.gitignore;
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echo "Download: ${root_folder}${output_zip_folder}${output_zip}";
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# cleam up user log file and ssh keys
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if [ ${TEST} -eq 0 ]; then
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# move pub to created folders
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mv "${root_folder}${ssh_keygen_folder}"*.pub "${root_folder}${ssh_keygen_folder_created_pub}";
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# delete the rest
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rm "${root_folder}${output_file}";
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rm "${root_folder}${ssh_keygen_folder}"*;
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else
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echo "$> mv ${root_folder}${ssh_keygen_folder}*.pub ${root_folder}${ssh_keygen_folder_created_pub};";
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echo "$> rm ${root_folder}${output_file}";
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echo "$> rm ${root_folder}${ssh_keygen_folder}*";
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fi;
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