X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02.git/blobdiff_plain/a96495d38f01cbb94cbe7f296bf7f59fe8297005..0b923d462ecb33b04d1fdd7e45ecbd4ed79c1509:/exec/bkgpslog

diff --git a/exec/bkgpslog b/exec/bkgpslog
index 639a7a5..84a74b0 100755
--- a/exec/bkgpslog
+++ b/exec/bkgpslog
@@ -6,7 +6,7 @@
 
 #==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
@@ -14,7 +14,7 @@ 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="0.3.8";          # 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)
@@ -334,20 +334,64 @@ timeUntilNextHour(){
 } # 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 "$DATE_CURRENT_SHORT";
 } # Get YYYYmmdd
 timeDuration(){
@@ -669,7 +713,8 @@ checkMakeTar() {
 } # checks if arg1 is tar; creates one otherwise
 appendArgTar(){
     # Desc: Writes first argument to temporary file with arguments as options, then appends file to tar
-    # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+    # Usage: appendArgTar "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
+    # Version: 1.0.3
     # Input: arg1: data to be written
     #        arg2: file name of file to be inserted into tar
     #        arg3: tar archive path (must exist first)
@@ -681,10 +726,11 @@ appendArgTar(){
     #          appendArgTar "$(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
+    # Ref/Attrib: Using 'eval' to construct command strings https://askubuntu.com/a/476533
 
     # Save function name
-    local FN="${FUNCNAME[0]}"
-    yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
+    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
@@ -701,21 +747,114 @@ appendArgTar(){
     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"
+    # Input command
+    CMD0="echo \"\$1\""
+
+    # # Debug
+    # yell "DEBUG:STATUS:$FN:CMD0:$CMD0"
+    # 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
-    echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME";
+    eval "$CMD0"" | ""$CMD1"" | ""$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()."
+    #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: 1.0.2
+    # 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="$8"; else CMD4="tee /dev/null "; fi # command string 4
+
+    # Input command string
+    CMD0="cat \"\$1\""
+    
+    # # Debug
+    # yell "DEBUG:STATUS:$FN:CMD0:$CMD0"
+    # yell "DEBUG:STATUS:$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:$TMP_DIR"
+    
+    # Write to temporary working dir
+    eval "$CMD0 | $CMD1 | $CMD2 | $CMD3 | $CMD4" > "$TMP_DIR"/"$FILENAME";
+
+    # Append to tar
+    try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
+    #yell "DEBUG:STATUS:$FN:Finished appendFileTar()."
+} # Append file to Tar archive
+validateInput() {
+    # Desc: Validates Input
+    # Usage: validateInput [str input] [str input type]
+    # Version: 0.2.1
+    # Input: arg1: string to validate
+    #        arg2: string specifying input type (ex:"ssh_pubkey")
+    # Output: return code 0: if input string matched specified string type
+    # Depends: bash 5, yell
+
+    # Save function name
+    local FN="${FUNCNAME[0]}";
+
+    # Process arguments
+    argInput="$1";
+    argType="$2";
+    if [[ $# -gt 2 ]]; then yell "ERROR:$0:$FN:Too many arguments."; exit 1; fi;
+
+    # Check for blank
+    if [[ -z "$argInput" ]]; then return 1; fi
+    
+    # Define input types
+    ## ssh_pubkey
+    ### Check for alnum/dash base64 (ex: "ssh-rsa AAAAB3NzaC1yc2EAAA")
+    if [[ "$argType" = "ssh_pubkey" ]]; then
+	if [[ "$argInput" =~ ^[[:alnum:]-]*[\ ]*[[:alnum:]+/=]*$ ]]; then
+	return 0; fi; fi;
+
+    ## age_pubkey
+    ### Check for age1[:bech32:]
+    if [[ "$argType" = "age_pubkey" ]]; then
+	if [[ "$argInput" =~ ^age1[qpzry9x8gf2tvdw0s3jn54khce6mua7l]*$ ]]; then
+	    return 0; fi; fi
+
+    # Return error if no condition matched.
+    return 1;
+} # Validates strings
 magicWriteVersion() {
     # Desc: Appends time-stamped VERSION to PATHOUT_TAR
     # Usage: magicWriteVersion
@@ -750,27 +889,54 @@ 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 "$@" # Process arguments.
@@ -804,10 +970,11 @@ main() {
     if [[ "$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 "$pubkey" 1>/dev/null; then
+		vbm "DEBUG:Testing pubkey string:$pubkey";
+		if echo "butts" | age -a -r "$pubkey" 1>/dev/null &&
+			( validateInput "$pubkey" "ssh_pubkey" || validateInput "$pubkey" "age_pubkey"); then
 		    #### Form age recipient string
-		    recipients="$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
@@ -819,26 +986,26 @@ main() {
 	    vbm "DEBUG:Finished processing recPubKeys array";
 
 	    ##  Form age command string
-	    CMD_ENCRYPT="age ""$recipients ";
-	    CMD_ENCRYPT_SUFFIX=".age";
+	    CMD_ENCRYPT="age ""$recipients " && vbm "CMD_ENCRYPT:$CMD_ENCRYPT";
+	    CMD_ENCRYPT_SUFFIX=".age" && vbm "CMD_ENCRYPT_SUFFIX:$CMD_ENCRYPT_SUFFIX";
 	else
 	    yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1;
 	fi
     else
-	CMD_ENCRYPT="tee /dev/null ";
-	CMD_ENCRYPT_SUFFIX="";
+	CMD_ENCRYPT="tee /dev/null " && vbm "CMD_ENCRYPT:$CMD_ENCRYPT";
+	CMD_ENCRYPT_SUFFIX="" && vbm "CMD_ENCRYPT_SUFFIX:$CMD_ENCRYPT_SUFFIX";
 	vbm "DEBUG:Encryption not enabled."
     fi
     if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active
 	if checkapp gzip; then # Check if gzip available
-	    CMD_COMPRESS="gzip ";
-	    CMD_COMPRESS_SUFFIX=".gz";
+	    CMD_COMPRESS="gzip " && vbm "CMD_COMPRESS:$CMD_COMPRESS";
+	    CMD_COMPRESS_SUFFIX=".gz" && vbm "CMD_COMPRESS_SUFFIX:$CMD_COMPRESS_SUFFIX";
 	else
 	    yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1;
 	fi
     else
-	CMD_COMPRESS="tee /dev/null ";
-	CMD_COMPRESS_SUFFIX="";
+	CMD_COMPRESS="tee /dev/null " && vbm "CMD_COMPRESS:$CMD_COMPRESS";
+	CMD_COMPRESS_SUFFIX="" && vbm "CMD_COMPRESS_SUFFIX:$CMD_COMPRESS_SUFFIX";
 	vbm "DEBUG:Compression not enabled.";
     fi
 
@@ -864,47 +1031,20 @@ main() {
     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.";