+ else
+ yell "ERROR:Invalid argument for setScriptTTL function."; exit 1;
+ fi
+} # Seconds until next (day|hour).
+checkMakeTar() {
+ # Desc: Checks that a valid tar archive exists, creates one otherwise
+ # Usage: checkMakeTar [ path ]
+ # Input: arg1: path of tar archive
+ # Output: exit code 0 (even if tar had to be created)
+ # Depends: try, tar, date
+ local PATH_TAR="$1"
+
+ # Check if file is a valid tar archive
+ if tar --list --file="$PATH_TAR" 1>/dev/null 2>&1; then
+ ## T1: return success
+ return 0;
+ else
+ ## F1: Check if file exists
+ if [[ -f "$PATH_TAR" ]]; then
+ ### T: Rename file
+ try mv "$PATH_TAR" "$PATH_TAR""--broken--""$(date +%Y%m%dT%H%M%S)";
+ else
+ ### F: -
+ :
+ fi
+ ## F2: Create tar archive, return 0
+ try tar --create --file="$PATH_TAR" --files-from=/dev/null;
+ return 0;
+ fi
+} # checks if arg1 is tar; creates one otherwise
+appendArgTar(){
+ # Desc: Writes first argument to temporary file with arguments as options, then appends file to tar
+ # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+ # Input: arg1: data to be written
+ # arg2: file name of file to be inserted into tar
+ # arg3: tar archive path (must exist first)
+ # arg4: temporary working dir
+ # arg5+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ")
+ # Output: file written to disk
+ # Example: decrypt multiple large files in parallel
+ # appendArgTar "$(cat /tmp/largefile1.gpg)" "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # appendArgTar "$(cat /tmp/largefile2.gpg)" "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # appendArgTar "$(cat /tmp/largefile3.gpg)" "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # Depends: bash 5
+
+ # Save function name
+ local FN="${FUNCNAME[0]}"
+ yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
+
+ # Set file name
+ if ! [ -z "$2" ]; then FILENAME="$2"; else yell "ERROR:$FN:Not enough arguments."; exit 1; fi
+
+ # Check tar path is a file
+ if [ -f "$3" ]; then TAR_PATH="$3"; else yell "ERROR:$FN:Tar archive arg not a file."; exit 1; fi
+
+ # Check temp dir arg
+ if ! [ -z "$4" ]; then TMP_DIR="$4"; else yell "ERROR:$FN:No temporary working dir set."; exit 1; fi
+
+ # Set command strings
+ if ! [ -z "$5" ]; then CMD1="$5"; else CMD1="tee /dev/null "; fi # command string 1
+ if ! [ -z "$6" ]; then CMD2="$6"; else CMD2="tee /dev/null "; fi # command string 2
+ if ! [ -z "$7" ]; then CMD3="$7"; else CMD3="tee /dev/null "; fi # command string 3
+ if ! [ -z "$8" ]; then CMD4="$8"; else CMD4="tee /dev/null "; fi # command string 4
+
+ # Debug
+ yell "STATUS:$FN:CMD1:$CMD1"
+ yell "STATUS:$FN:CMD2:$CMD2"
+ yell "STATUS:$FN:CMD3:$CMD3"
+ yell "STATUS:$FN:CMD4:$CMD4"
+ yell "STATUS:$FN:FILENAME:$FILENAME"
+ yell "STATUS:$FN:TAR_PATH:$TAR_PATH"
+ yell "STATUS:$FN:TMP_DIR:$TMP_DIR"
+ # Write to temporary working dir
+ echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME";
+
+ # Append to tar
+ try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
+ yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
+} # Append Bash var to file appended to Tar archive
+magicWriteBuffer() {
+ # Desc: bkgpslog-specific meta function for writing data to DIR_TMP then appending each file to PATHOUT_TAR
+ # Inputs: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP
+ # Depends: yell, try, vbm, appendArgTar, tar
+ local FN="${FUNCNAME[0]}";
+ wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
+ vbm "DEBUG:STATUS:$FN:Started magicWriteBuffer().";
+
+ # Check that PATHOUT_TAR is a tar. Rename old and create empty one otherwise.
+ checkMakeTar "$PATHOUT_TAR"
+
+ # Write bufferBash to PATHOUT_TAR
+ appendArgTar "$bufferBash" "$FILEOUT_NMEA" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_NMEA" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write NMEA data
+ appendArgTar "$bufferBash" "$FILEOUT_GPX" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_GPX" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write GPX file
+ appendArgTar "$bufferBash" "$FILEOUT_KML" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_KML" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write KML file
+ # Remove secured chunks from DIR_TMP
+ try rm "$PATHOUT_NMEA" "$PATHOUT_GPX" "$PATHOUT_KML";
+ yell "DEBUG:STATUS:$FN:Finished magicWriteBuffer().";
+} # bkgpslog write function
+
+
+main() {
+ processArguments "$@" # Process arguments.
+
+ # Determine working directory
+ ## Set DIR_TMP_PARENT to user-specified value if specified
+ if [[ "$OPTION_TMPDIR" = "true" ]]; then
+ if [[ -d "$TMP_DIR_PRIORITY" ]]; then
+ DIR_TMP_PARENT="$OPTION_TMPDIR";
+ else
+ yell "WARNING:Specified temporary working directory not valid:$OPTION_TMPDIR";
+ exit 1;
+ fi
+ fi
+
+ ## Set DIR_TMP_PARENT to default or fallback otherwise
+ if [[ -d "$DIR_TMP_DEFAULT" ]]; then
+ DIR_TMP_PARENT="$DIR_TMP_DEFAULT";
+ elif [[ -d /tmp ]]; then
+ yell "WARNING:/dev/shm not available. Falling back to /tmp .";
+ DIR_TMP_PARENT="/tmp";
+ else
+ yell "ERROR:No valid working directory available. Exiting.";
+ exit 1;
+ fi
+
+ ## Set DIR_TMP using DIR_TMP_PARENT and nonce (SCRIPT_TIME_START)
+ DIR_TMP="$DIR_TMP_PARENT"/"$SCRIPT_TIME_START""..bkgpslog" && vbm "DEBUG:Set DIR_TMP to:$DIR_TMP"; # Note: removed at end of main().
+
+ # Set output encryption and compression option strings
+ if [[ "$OPTION_ENCRYPT" = "true" ]]; then # Check if encryption option active.
+ if checkapp age; then # Check that age is available.
+ for pubkey in "${recPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message
+ vbm "DEBUG:Testing pubkey string:$pubkey"
+ if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then
+ # Form age recipient string
+ recipients="$recipients""-r $pubkey ";
+ vbm "STATUS:Added pubkey for forming age recipient string:""$pubkey";
+ vbm "DEBUG:recipients:""$recipients";
+ else
+ yell "ERROR:Exit code ""$?"". Invalid recipient pubkey string. Exiting."; exit 1;
+ fi
+ done
+ vbm "DEBUG:Finished processing recPubKeys array";
+ # Form age command string
+ CMD_ENCRYPT="age ""$recipients ";
+ CMD_ENCRYPT_SUFFIX=".age";
+ else
+ yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1;
+ fi
+ else
+ CMD_ENCRYPT="tee /dev/null ";
+ CMD_ENCRYPT_SUFFIX="";
+ vbm "DEBUG:Encryption not enabled."
+ fi
+ if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active
+ if checkapp gzip; then # Check if gzip available
+ CMD_COMPRESS="gzip ";
+ CMD_COMPRESS_SUFFIX=".gz";
+ else
+ yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1;
+ fi
+ else
+ CMD_COMPRESS="tee /dev/null ";
+ CMD_COMPRESS_SUFFIX="";
+ vbm "DEBUG:Compression not enabled.";
projects / EVA-2020-02.git / blobdiff