Initial Commit
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Jon-William Lewis
316
sns.sh
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316
sns.sh
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#!/bin/bash
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#==========================================================
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# Simple Note System, v1.1
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# Copyright 2014, Xenese Labs/Sicron-Perion XNF
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#==========================================================
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PROD_STR="Simple Note System"
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VER_STR=v1.1
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#==============================================================================
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# Section: Helper Functions
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#==============================================================================
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function writeconf {
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cat > $HOME/.sns << EOF
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#==========================================================
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# Simple Note System Config, v1.1
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# Copyright 2014, Xenese Labs/Sicron-Perion XNF
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#==========================================================
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#Directory where notes will be stored
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BASEDIR=$HOME/notes
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#File extension to use (for listing notes)
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EXT=note
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#Preferred Editor
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EDITOR=vim
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#Encryption
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#WARNING: ANY PREVIOUSLY UNENCRYPTED NOTES WILL BE LOST
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ENCRYPTION="FALSE"
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ENC_KEY=""
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EOF
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chmod 600 $HOME/.sns
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}
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function help {
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echo ""
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echo "usage: sns [-ce] NAME NOTEBOOK SECTION"
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echo " sns [-d ] NAME NOTEBOOK SECTION"
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echo " sns [-l ] NOTEBOOK"
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echo " sns [-w ]"
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echo ""
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echo " -c | --create : Create note"
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echo " -d | --delete : Delete note"
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echo " -e | --edit : Open note for editing"
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echo " -p | --print : Print note to console"
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echo " -l | --list : List all notes in NOTEBOOK"
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echo " -w | --wconf : Write default configuration to ~/.sns (useful for Encryption)"
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echo ""
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}
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function pause {
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read -p " Press [Enter] to continue."
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echo ""
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}
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#==============================================================================
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# End Section: Helper Functions
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#==============================================================================
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#==============================================================================
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# Section: Configuration
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#==============================================================================
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if [ -r $HOME/.sns ]; then
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source $HOME/.sns
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else
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BASEDIR=$HOME/notes
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EDITOR=vim
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EXT=note
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fi
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if [ "$ENCRYPTION" == "TRUE" ]; then
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if [ -z "$ENC_KEY" ]; then
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ERR_NO_KEY="TRUE"
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ENCRYPTION="FALSE"
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pause
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fi
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command -v openssl >/dev/null 2>&1 || { ERR_NO_SSL="TRUE"; ENCRYPTION="FALSE"; }
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fi
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if [ "$ENCRYPTION" == "TRUE" ]; then
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PROD_STR="Simple Note System (Encryption Enabled)"
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EXT="$EXT.enc"
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if [ ! -d ~/.tmp ]; then
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mkdir -p ~/.tmp
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fi
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fi
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echo "$PROD_STR, $VER_STR"
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if [ -n "$ERR_NO_SSL" ]; then
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echo >&2 " Warning: OpenSSL not installed. Encryption disabled."
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fi
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if [ -n "$ERR_NO_KEY" ]; then
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echo " Warning: No encryption key was provided. Encryption disabled."
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fi
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if [ -n "$ERR_NO_SSL" -o -n "$ERR_NO_KEY" ]; then
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pause
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fi
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#==============================================================================
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# End Section: Read Configuration
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#==============================================================================
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#==============================================================================
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# Section: Argument Parsing
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#==============================================================================
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NAME=""
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NOTEBOOK=""
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SECTION=""
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if [ -z "$1" ]; then #If no input was given, print help
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help
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exit
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else #Assume the user wants to do something.
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ARGS=( "$@" )
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for ARG in ${ARGS[@]};do
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if [ "$ARG" = "-c" -o "$ARG" = "--create" ]; then CREATE="TRUE"
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elif [ "$ARG" = "-d" -o "$ARG" = "--delete" ]; then DELETE="TRUE"
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elif [ "$ARG" = "-e" -o "$ARG" = "--edit" ]; then EDIT="TRUE"
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elif [ "$ARG" = "-ce" -o "$ARG" = "-ec" ]; then EDIT="TRUE";CREATE="TRUE"
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elif [ "$ARG" = "-p" -o "$ARG" = "--print" ]; then PRINT="TRUE"
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elif [ "$ARG" = "-l" -o "$ARG" = "--list" ]; then LIST="TRUE"
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elif [ "$ARG" = "-h" -o "$ARG" == "--help" ]; then help; exit 0
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elif [ "$ARG" = "-w" -o "$ARG" == "--wconf" ]; then writeconf; exit
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else
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if [ -z "$NAME" -a -n $ARG ]; then
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NAME=$ARG
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echo "Name: $NAME"
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elif [ -z "$NOTEBOOK" -a -n $ARG ]; then
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NOTEBOOK=$ARG
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echo "Notebook: $NOTEBOOK"
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elif [ -z "$SECTION" -a -n $ARG ]; then
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SECTION=$ARG
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echo "Section: $SECTION"
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fi
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fi
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done
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fi
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#==============================================================================
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# End Section: Argument Parsing
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#==============================================================================
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#==============================================================================
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# Section: Main
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#==============================================================================
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NOTEDIR=$BASEDIR/$NOTEBOOK/$SECTION/
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NOTE=$NOTEDIR$NAME.$EXT
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if [ "$ENCRYPTION" == "TRUE" ]; then
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NOTE=$NOTE.tmp
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fi
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#==========================================================================
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# Subection: List
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#==========================================================================
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if [ -n "$LIST" ]; then
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NOTEBOOK="$NAME" #In case of a list command, arg parsing fails.
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if [ -z "$NOTEBOOK" ]; then
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echo " ERROR: Insufficient arguments"
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help
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exit
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else
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if [ -d "$BASEDIR"/"$NOTEBOOK" ]; then
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echo ""
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printf "Notes in $(basename $NOTEBOOK):"
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echo ""
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NOTES=( $(find $BASEDIR/$NOTEBOOK -name "*.$EXT" -print0 | sed s:$BASEDIR/$NOTEBOOK/:" ":g | sed -e s:".$EXT"::g | tr "/" " ") )
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let i=0
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for NOTE in ${NOTES[@]}; do
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if [ -d $BASEDIR/$NOTEBOOK/$NOTE ]; then
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if [ "$LAST_SECTION" != "$NOTE" ]; then
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printf " Section: $NOTE\n"
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fi
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LAST_SECTION=$NOTE
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else
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#if [ $(($i % 1)) -eq 0 ]; then
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# printf "\n "
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#fi
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printf " $NOTE\n"
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fi
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let i++
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done
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printf "\n"
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else
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echo ""
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echo "ERROR: Notebook $NOTEBOOK does not exist."
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echo ""
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fi
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fi
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exit
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fi
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#======================================================================
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# Sanity Check - Actions below require a valid $NAME and $NOTEBOOK
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#======================================================================
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if [ -z "$NAME" -o -z "$NOTEBOOK" ]; then
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echo " ERROR: Insufficient arguments"
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help
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exit 10
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fi
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#==========================================================================
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# Subection: Delete
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#==========================================================================
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if [ "$DELETE" == "TRUE" ]; then
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if [ -e $NOTE -o -e ${NOTE%.*} ]; then
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if [ "$ENCRYPTION" == "TRUE" ]; then
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rm ${NOTE%.*}
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else
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rm $NOTE
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fi
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echo ""
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echo "Deleted note: $NOTEBOOK/$SECTION$NAME."
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exit
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else
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echo ""
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echo "ERROR: Note $NOTEBOOK/$SECTION$NAME does not exist."
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exit
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fi
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fi
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#==========================================================================
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# Subection: Create
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#==========================================================================
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if [ -z "$CREATE" -a -z "$EDIT" -a -z "$PRINT" ]; then #If no action specified, print help and exit
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help
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exit
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else
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if [ "$CREATE" == "TRUE" ]; then
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if [ -e $NOTE -o -e ${NOTE%.*} ]; then
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echo ""
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echo "ERROR: Note already exists"
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echo "Hint: use -e to edit the note."
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echo ""
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exit
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else
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#Create any necessary folders
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mkdir -p $NOTEDIR
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#Fill in title
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echo "TITLE: $NAME" > $NOTE
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#Fill the second line with the date
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echo "DATE: $(date)" >> $NOTE
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if [ "$ENCRYPTION" == "TRUE" ]; then
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if [ $EDIT == "FALSE" ]; then
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openssl enc -aes-256-cbc -salt -in $NOTE -out ${NOTE%.*} -pass pass:$ENC_KEY
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fi
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fi
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fi
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fi
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#==========================================================================
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# Subection: Edit
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#==========================================================================
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if [ "$EDIT" == "TRUE" ]; then
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if [ -r "$NOTE" -o -r ${NOTE%.*} ]; then
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if [ -z "$CREATE" ]; then
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if [ "$ENCRYPTION" == "TRUE" ]; then
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openssl enc -d -aes-256-cbc -in ${NOTE%.*} -pass pass:$ENC_KEY > $NOTE
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fi
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echo "" >> $NOTE
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echo "EDIT $(date)" >> $NOTE
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fi
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$EDITOR $NOTE
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if [ "$ENCRYPTION" == "TRUE" ]; then
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openssl enc -aes-256-cbc -salt -in $NOTE -out ${NOTE%.*} -pass pass:$ENC_KEY
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rm $NOTE
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fi
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else
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echo ""
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echo "ERROR: Note cannot be opened for editting."
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echo ""
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fi
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fi
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fi
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#==========================================================================
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# Subection: Print
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#==========================================================================
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if [ "$PRINT" == "TRUE" ]; then
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if [ -r "$NOTE" -o -r ${NOTE%.*} ]; then
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if [ -z "$CREATE" ]; then
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if [ "$ENCRYPTION" == "TRUE" ]; then
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openssl enc -d -aes-256-cbc -in ${NOTE%.*} -pass pass:$ENC_KEY
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else
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cat $NOTE
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echo "" >> $NOTE
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fi
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else
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echo ""
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echo "ERROR: Note cannot be found."
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echo ""
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fi
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fi
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fi
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exit
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