Fix skip naming for zip/move creation

Avoid "file not found" zip file creation and remove if there are no
PEM files created, eg if we have a pre defined pub file

.shellcheckrc

@@ -0,0 +1,2 @@
+shell=bash
+external-sources=true

Readme.md

@@ -26,6 +26,31 @@ Inside the base folder there are
 - ssh-keygen for temporary holding the PEM/PUB files
 - zip file which holds the created user list, password and PEM/PUB files
 
+## Config
+
+### create_user.sh: create_user.cfg
+
+A `create_user.cfg` can be created to set a differen HOME_LOCATION and PASSWORD_LENGTH values
+
+eg:
+
+```ini
+HOME_LOCATION="/storage"
+PASSWORD_LENGTH=14
+```
+
+### authorized_key_location_change.sh: authorized_key_location_change.ignore
+
+For this script a `authorized_key_location_change.ignore` with a list of user names to ignore for the
+move
+
+eg:
+
+```ini
+foo_user
+bar_user
+```
+
 ## Options
 
 ### -g (go)

bin/create_user.sh

@@ -87,6 +87,13 @@ if [ ! -d "${HOME_FOLDER}" ]; then
 	echo "Home folder location not found: ${HOME_FOLDER}";
 	error=1;
 fi;
+# allow 10 to 39 length for password
+if [ ! -z "${PASSWORD_LENGTH}" ] && ! [[ "${PASSWORD_LENGTH}" =~ ^[13][0-9]$ ]]; then
+	echo "Password length set error, can only be a value between 10 and 39";
+	error=1;
+elif [ -z ${PASSWORD_LENGTH} ]; then
+	PASSWORD_LENGTH=14;
+fi;
 # home dir error abort
 if [ $error -eq 1 ]; then
 	exit;
@@ -309,7 +316,11 @@ while read i; do
 		# Note we only create a password if we need it
 		# password + store pwgen 10 1 -1
 		if [ -z "${_password}" ]; then
-			password=$(printf "%s" $(pwgen 14 1));
+			password=$(printf "%s" $(pwgen ${PASSWORD_LENGTH} 1));
+		elif [ "${_password}" = "SET_NO_PASSWORD" ]; then
+			# set empty
+			echo "* No password set";
+			password="";
 		else
 			echo "! Override password set";
 			password=${_password};
@@ -410,14 +421,24 @@ done;
 if [ ${INFO} -eq 1 ]; then
 	exit;
 fi;
+# check if there are any files in the SSH_KEYGEN_FOLDER, else skip zip file creation and file move
+has_pem_files=0;
+if (shopt -s nullglob dotglob; f=("${SSH_KEYGEN_FOLDER}"*".pem"*); ((${#f[@]}))); then
+	has_pem_files=1;
+fi;
 # zip everything and remove data in ssh key folder, delete output file with passwords
 if [ ${TEST} -eq 0 ]; then
+	if [ "${has_pem_files}" -eq 1 ]; then
 		zip -r \
 			"${ROOT_FOLDER}${output_zip_folder}${output_zip}" \
 			"${input_file}" \
 			"${output_file}" \
 			"${SSH_KEYGEN_FOLDER}" \
 			-x\*.gitignore;
+		echo "Download: ${ROOT_FOLDER}${output_zip_folder}${output_zip}";
+	else
+		echo "Skip ZIP file creation, no pem files";
+	fi;
 else
 	echo "zip -r \\"
 	echo "${ROOT_FOLDER}${output_zip_folder}${output_zip} \\"
@@ -425,15 +446,19 @@ else
 	echo "${output_file} \\"
 	echo "${SSH_KEYGEN_FOLDER} \\"
 	echo "-x\*.gitignore;"
-fi;
 	echo "Download: ${ROOT_FOLDER}${output_zip_folder}${output_zip}";
+fi;
 # cleam up user log file and ssh keys
 if [ ${TEST} -eq 0 ]; then
+	if [ "${has_pem_files}" -eq 1 ]; then
 		# move pub to created folders
 		mv "${ROOT_FOLDER}${SSH_KEYGEN_FOLDER}"*.pub "${ROOT_FOLDER}${SSH_KEYGEN_FOLDER_CREATED_PUB}";
 		# delete the rest
 		rm "${ROOT_FOLDER}${output_file}";
 		rm "${ROOT_FOLDER}${SSH_KEYGEN_FOLDER}"*;
+	else
+		echo "Skip pub file move and cleanup, no pem files";
+	fi;
 else
 	echo "$> mv ${ROOT_FOLDER}${SSH_KEYGEN_FOLDER}*.pub ${ROOT_FOLDER}${SSH_KEYGEN_FOLDER_CREATED_PUB};";
 	echo "$> rm ${ROOT_FOLDER}${output_file}";