#==BEGIN Define script parameters==
## Logging Behavior parameters
-BUFFER_TTL="60"; # time between file writes
+BUFFER_TTL="300"; # time between file writes
SCRIPT_TTL="day"; # (day|hour)
#### TZ="UTC"; export TZ; # Default time zone; overridden by '--time-zone=[str]' option
DIR_TMP_DEFAULT="/dev/shm"; # Default parent of working directory
SCRIPT_TIME_START=$(date +%Y%m%dT%H%M%S.%N);
PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case apps saved there
SCRIPT_HOSTNAME=$(hostname); # Save hostname of system running this script.
-SCRIPT_VERSION="0.3.0"; # Define version of script.
+SCRIPT_VERSION="0.3.6"; # Define version of script.
SCRIPT_NAME="bkgpslog"; # Define basename of script file.
SCRIPT_URL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script.
AGE_VERSION="1.0.0-beta2"; # Define version of age (encryption program)
} # Report seconds until next hour
dateTimeShort(){
# Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
- # Usage: dateTimeShort
+ # Usage: dateTimeShort ([str date])
+ # Version 1.1.0
+ # Input: arg1: 'date'-parsable timestamp string (optional)
# Output: stdout: timestamp (ISO-8601, no separators)
+ # Depends: yell
local TIME_CURRENT TIME_CURRENT_SHORT
+
+ argTime="$1";
+ # Get Current Time
TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
- TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
+ # Decide to parse current or supplied date
+ ## Check if time argument empty
+ if [[ -z "$argTime" ]]; then
+ ## T: Time argument empty, use current time
+ TIME_INPUT="$TIME_CURRENT";
+ else
+ ## F: Time argument exists, validate time
+ if date --date="$argTime" 1>/dev/null 2>&1; then
+ ### T: Time argument is valid; use it
+ TIME_INPUT="$argTime";
+ else
+ ### F: Time argument not valid; exit
+ yell "ERROR:Invalid time argument supplied. Exiting."; exit 1;
+ fi
+ fi
+ # Construct and deliver separator-les date string
+ TIME_CURRENT_SHORT="$(date -d "$TIME_INPUT" +%Y%m%dT%H%M%S%z)";
echo "$TIME_CURRENT_SHORT";
} # Get YYYYmmddTHHMMSS±zzzz
dateShort(){
# Desc: Date without separators (YYYYmmdd)
- # Usage: dateShort
+ # Usage: dateShort ([str date])
+ # Version: 1.1.0
+ # Input: arg1: 'date'-parsable timestamp string (optional)
# Output: stdout: date (ISO-8601, no separators)
+ # Depends: yell
local TIME_CURRENT DATE_CURRENT_SHORT
+
+ argTime="$1";
+ # Get Current Time
TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
- DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)"; # Produce separator-less current date with resolution 1 day.
+ # Decide to parse current or supplied date
+ ## Check if time argument empty
+ if [[ -z "$argTime" ]]; then
+ ## T: Time argument empty, use current time
+ TIME_INPUT="$TIME_CURRENT";
+ else
+ ## F: Time argument exists, validate time
+ if date --date="$argTime" 1>/dev/null 2>&1; then
+ ### T: Time argument is valid; use it
+ TIME_INPUT="$argTime";
+ else
+ ### F: Time argument not valid; exit
+ yell "ERROR:Invalid time argument supplied. Exiting."; exit 1;
+ fi
+ fi
+ # Construct and deliver separator-les date string
+ DATE_CURRENT_SHORT="$(date -d "$TIME_INPUT" +%Y%m%d)"; # Produce separator-less current date with resolution 1 day.
echo "$DATE_CURRENT_SHORT";
} # Get YYYYmmdd
timeDuration(){
} # checks if arg1 is tar; creates one otherwise
appendArgTar(){
# Desc: Writes first argument to temporary file with arguments as options, then appends file to tar
- # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
- # Version: 1.0.0
+ # Usage: appendArgTar "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+ # Version: 1.0.2
# Input: arg1: data to be written
# arg2: file name of file to be inserted into tar
# arg3: tar archive path (must exist first)
try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
#yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
} # Append Bash var to file appended to Tar archive
+appendFileTar(){
+ # Desc: Processes first file and then appends to tar
+ # Usage: appendFileTar [file path] [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+ # Version: 1.0.1
+ # Input: arg1: path of file to be (processed and) written
+ # arg2: name to use for file 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
+ # appendFileTar /tmp/largefile1.gpg "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # appendFileTar /tmp/largefile2.gpg "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # appendFileTar /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 appendFileTar()."
+
+ # 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="$8"; else CMD4="tee /dev/null "; fi # command string 4
+ # # Debug
+ # yell "DEBUG:STATUS:$FN:CMD1:$CMD1"
+ # yell "DEBUG:STATUS:$FN:CMD2:$CMD2"
+ # yell "DEBUG:STATUS:$FN:CMD3:$CMD3"
+ # yell "DEBUG:STATUS:$FN:CMD4:$CMD4"
+ # yell "DEBUG:STATUS:$FN:FILENAME:$FILENAME"
+ # yell "DEBUG:STATUS:$FN:TAR_PATH:$TAR_PATH"
+ # yell "DEBUG:STATUS:$FN:TMP_DIR:$TMP_DIR"
+
+ # Write to temporary working dir
+ cat "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME";
+
+ # Append to tar
+ try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
+ #yell "DEBUG:STATUS:$FN:Finished appendFileTar()."
+} # Append file to Tar archive
magicWriteVersion() {
# Desc: Appends time-stamped VERSION to PATHOUT_TAR
# Usage: magicWriteVersion
appendArgTar "$CONTENT_VERSION" "$FILEOUT_VERSION" "$PATHOUT_TAR" "$DIR_TMP";
} # bkgpslog: write version data to PATHOUT_TAR via appendArgTar()
-magicWriteBuffer() {
+magicGatherWriteBuffer() {
# Desc: bkgpslog-specific meta function for writing data to DIR_TMP then appending each file to PATHOUT_TAR
- # Inputs: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP
+ # Inputs: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP,
+ # Inputs: BUFFER_TTL bufferTTL_STR SCRIPT_HOSTNAME CMD_COMPRESS_SUFFIX CMD_ENCRYPT_SUFFIX
# Depends: yell, try, vbm, appendArgTar, tar
local FN="${FUNCNAME[0]}";
wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
+ # Create buffer file with unique name
+ PATHOUT_BUFFER="$DIR_TMP/buffer$SECONDS";
+ # Fill buffer
+ timeout "$BUFFER_TTL"s gpspipe -r -o "$PATHOUT_BUFFER" ;
+ timeBufferStart="$(dateTimeShort "$(date --date="$BUFFER_TTL seconds ago")")"; # Note start time
vbm "DEBUG:STATUS:$FN:Started magicWriteBuffer().";
-
+ # Determine file paths (time is start of buffer period)
+ FILEOUT_BASENAME="$timeBufferStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" && vbm "STATUS:Set FILEOUT_BASENAME to:$FILEOUT_BASENAME";
+ ## Files saved to DIR_TMP
+ FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_NMEA to:$FILEOUT_NMEA";
+ FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_GPX to:$FILEOUT_GPX";
+ FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_KML to:$FILEOUT_KML";
+ PATHOUT_NMEA="$DIR_TMP"/"$FILEOUT_NMEA" && vbm "STATUS:Set PATHOUT_NMEA to:$PATHOUT_NMEA";
+ PATHOUT_GPX="$DIR_TMP"/"$FILEOUT_GPX" && vbm "STATUS:Set PATHOUT_GPX to:$PATHOUT_GPX";
+ PATHOUT_KML="$DIR_TMP"/"$FILEOUT_KML" && vbm "STATUS:Set PATHOUT_KML to:$PATHOUT_KML";
+ ## Files saved to disk (DIR_OUT)
+ ### one file per day (Ex: "20200731..hostname_location.[.gpx.gz].tar")
+ PATHOUT_TAR="$DIR_OUT"/"$(dateShort "$(date --date="$BUFFER_TTL seconds ago")")".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar && \
+ vbm "STATUS:Set PATHOUT_TAR to:$PATHOUT_TAR";
+ # DEBUG: check vars
+ vbm "STATUS:DIR_TMP :$DIR_TMP";
+ vbm "STATUS:PATHOUT_TAR :$PATHOUT_TAR";
+ vbm "STATUS:PATHOUT_NMEA:$PATHOUT_NMEA";
+ vbm "STATUS:PATHOUT_GPX:$PATHOUT_GPX";
+ vbm "STATUS:PATHOUT_KML:$PATHOUT_KML";
+
+
# Validate PATHOUT_TAR as tar.
checkMakeTar "$PATHOUT_TAR";
## Add VERSION file if checkMakeTar had to create a tar (exited 1) or replace one (exited 2)
if [[ $? -eq 1 ]] || [[ $? -eq 2 ]]; then magicWriteVersion; fi
# Write bufferBash to PATHOUT_TAR
- appendArgTar "$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
+ appendFileTar "$PATHOUT_BUFFER" "$FILEOUT_NMEA" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_NMEA" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write NMEA data
+ appendFileTar "$PATHOUT_BUFFER" "$FILEOUT_GPX" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_GPX" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write GPX file
+ appendFileTar "$PATHOUT_BUFFER" "$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:$FN:Finished magicWriteBuffer().";
-} # bkgpslog write function
+ rm "$PATHOUT_BUFFER" "$PATHOUT_NMEA" "$PATHOUT_GPX" "$PATHOUT_KML";
+ vbm "DEBUG:STATUS:$FN:Finished magicWriteBuffer().";
+} # write buffer to disk
main() {
processArguments "$@" # Process arguments.
if [[ "$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"
+ vbm "DEBUG:Testing pubkey string:$pubkey";
if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then
#### Form age recipient string
- recipients="$recipients""-r $pubkey ";
+ recipients="$recipients""-r \"$pubkey\" ";
vbm "STATUS:Added pubkey for forming age recipient string:""$pubkey";
vbm "DEBUG:recipients:""$recipients";
#### Add validated pubkey to recPubKeysValid array
checkMakeTar "$PATHOUT_TAR" && vbm "DEBUG:Confirmed or Created to be a tar:$PATHOUT_TAR";
## Append VERSION file to PATHOUT_TAR
magicWriteVersion;
-
- # Record gps data until script lifespan ends
- declare debugCounter; debugCounter="0"; # set debug counter
+
+ # Define GPS conversion commands
+ CMD_CONV_NMEA="tee /dev/null " && vbm "STATUS:Set CMD_CONV_NMEA to:$CMD_CONV_NMEA"; # tee as passthrough
+ CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " && vbm "STATUS:Set CMD_CONV_GPX to:$CMD_CONV_GPX"; # convert NMEA to GPX
+ CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " && vbm "STATUS:Set CMD_CONV_KML to:$CMD_CONV_KML"; # convert NMEA to KML
+
+ # MAIN LOOP:Record gps data until script lifespan ends
while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
- timeBufferStart="$(dateTimeShort)"; # Note start time
- # Determine file paths (time is start of buffer period)
- FILEOUT_BASENAME="$timeBufferStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" && vbm "STATUS:Set FILEOUT_BASENAME to:$FILEOUT_BASENAME";
- ## Files saved to DIR_TMP
- FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_NMEA to:$FILEOUT_NMEA";
- FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_GPX to:$FILEOUT_GPX";
- FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_KML to:$FILEOUT_KML";
- PATHOUT_NMEA="$DIR_TMP"/"$FILEOUT_NMEA" && vbm "STATUS:Set PATHOUT_NMEA to:$PATHOUT_NMEA";
- PATHOUT_GPX="$DIR_TMP"/"$FILEOUT_GPX" && vbm "STATUS:Set PATHOUT_GPX to:$PATHOUT_GPX";
- PATHOUT_KML="$DIR_TMP"/"$FILEOUT_KML" && vbm "STATUS:Set PATHOUT_KML to:$PATHOUT_KML";
- ## Files saved to disk (DIR_OUT)
- ### one file per day (Ex: "20200731..hostname_location.[.gpx.gz].tar")
- PATHOUT_TAR="$DIR_OUT"/"$(dateShort)".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar && \
- vbm "STATUS:Set PATHOUT_TAR to:$PATHOUT_TAR";
- # Define GPS conversion commands
- CMD_CONV_NMEA="tee /dev/null " && vbm "STATUS:Set CMD_CONV_NMEA to:$CMD_CONV_NMEA"; # tee as passthrough
- CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " && vbm "STATUS:Set CMD_CONV_GPX to:$CMD_CONV_GPX"; # convert NMEA to GPX
- CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " && vbm "STATUS:Set CMD_CONV_KML to:$CMD_CONV_KML"; # convert NMEA to KML
- # Fill Bash variable buffer
- bufferBash="$(timeout "$BUFFER_TTL""s" gpspipe -r)" && vbm "STATUS:Successfully filled bufferBash variable with gpspipe data."; # Record gpspipe nmea data to buffer for bufferTTL seconds
- # Process bufferBash, save secured chunk set to DIR_TMP
- vbm "STATUS:Beginning to save data to $DIR_TMP";
- magicWriteBuffer &
- # Append each secured chunk in memory dir (DIR_TMP) to file on disk (PATHOUT_TAR in DIR_OUT)
- vbm "STATUS:DIR_TMP :$DIR_TMP";
- vbm "STATUS:PATHOUT_TAR :$PATHOUT_TAR";
- vbm "STATUS:PATHOUT_NMEA:$PATHOUT_NMEA";
- vbm "STATUS:PATHOUT_GPX:$PATHOUT_GPX";
- vbm "STATUS:PATHOUT_KML:$PATHOUT_KML";
-
- # Reset buffer and filenames
- unset bufferBash FILEOUT_BASENAME PATHOUT_NMEA PATHOUT_GPX PATHOUT_KML PATHOUT_TAR timeBufferStart;
- vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
- ((debugCounter++))
- done
+ magicGatherWriteBuffer &
+ sleep "$BUFFER_TTL";
+ done
- # Remove DIR_TMP
+ # Cleanup
+ ## Remove DIR_TMP
try rm -r "$DIR_TMP";
vbm "STATUS:Main function finished.";
projects / EVA-2020-02.git / blobdiff