keygen

#!/bin/bash
[[ -z "$INFO_LEVEL" ]] && source ./bits/bootstrap/logging

#-----------
# Configurations
#-----------

OWNER=${OWNER-$USER}
SSH_TYPE=${SSH_TYPE-dsa}
TARGET_DIR=${TARGET_DIR-$HOME/.ssh}

#-----------
# Install Script
#-----------

SOURCE_PRIVATE_KEY=./assets/keys/$OWNER/id_${SSH_TYPE}
SOURCE_PUBLIC_KEY=./assets/keys/$OWNER/id_${SSH_TYPE}.pub
TARGET_PRIVATE_KEY=$TARGET_DIR/id_${SSH_TYPE}
TARGET_PUBLIC_KEY=$TARGET_DIR/id_${SSH_TYPE}.pub

KEYGEN_OUTPUT=/tmp/keygen.log

if [[ -e $TARGET_PUBLIC_KEY ]]; then
  debug "  -- SSH keys already setup in $TARGET_PUBLIC_KEY"

elif [[ -e $SOURCE_PUBLIC_KEY ]] && [[ -e $SOURCE_PRIVATE_KEY ]]; then
  notify "  -- Using keys from $SOURCE_PUBLIC_KEY ($OWNER)"
  OWNER=$OWNER ./bits/bootstrap/mkdir $TARGET_DIR
  OWNER=$OWNER ./bits/bootstrap/cp $SOURCE_PRIVATE_KEY $TARGET_PRIVATE_KEY
  OWNER=$OWNER ./bits/bootstrap/cp $SOURCE_PUBLIC_KEY $TARGET_PUBLIC_KEY
  chmod 600 $TARGET_PRIVATE_KEY
  chmod 644 $TARGET_PUBLIC_KEY

else
  notify "  -- Creating ssh keys $TARGET_PUBLIC_KEY"
  mkdir -p ${HOME}/.ssh
  SCRIPT_OUTPUT=$(ssh-keygen -t $SSH_TYPE -N "" -f $TARGET_PRIVATE_KEY > $KEYGEN_OUTPUT 2>&1)
  ERROR="Unable create ssh keys for $OWNER ..." ./bits/bootstrap/failonerrors $? $KEYGEN_OUTPUT
  [ $? -ne 0 ] && exit 1
fi