# Desc: Records gps data until midnight
# Author: Steven Baltakatei Sandoval; License: GPLv3+
-# Usage: bkgpslog --output [output dir]
+# Usage: bkgpslog -o [output dir]
#==BEGIN Define script parameters==
-PATH="/opt/bktei:$PATH" # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
-SCRIPT_HOSTNAME=$(hostname) # Save hostname of system running this script.
-SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
-SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
-SCRIPT_DATE_SHORT="$(date +%Y%m%d)" # Save current date in ISO-8601 format.
+## Logging Behavior parameters
+BUFFER_TTL="60"; # 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="bkgpslog 0.1.0"; # Define version of script.
declare -Ag appRollCall # Associative array for storing app status
declare -Ag fileRollCall # Associative array for storing file status
declare -a recPubKeys # for processArguments function
declare recipients # for main function
+## Initialize variables
+OPTION_VERBOSE=""; OPTION_ENCRYPT=""; OPTION_COMPRESS=""; OPTION_TMPDIR="";
+
#===BEGIN Declare local script functions===
checkapp() {
# Desc: If arg is a command, save result in assoc array 'appRollCall'
echoerr " Encrypt output."
echoerr
echoerr " -r, --recipient [ pubkey string ]"
- echoerr " Specify recipient."
+ echoerr " Specify recipient. May be age or ssh pubkey."
+ echoerr " See https://github.com/FiloSottile/age"
echoerr
echoerr " -o, --output [ directory ]"
echoerr " Specify output directory to save logs."
echoerr " -c, --compress"
echoerr " Compress output with gzip (before encryption if enabled)."
echoerr
+ echoerr " -z, --time-zone"
+ echoerr " Specify time zone. (ex: \"America/New_York\")"
+ echoerr
+ echoerr " -t, --temp-dir"
+ echoerr " Specify parent directory for temporary working directory."
+ echoerr " Default: \"/dev/shm\""
+ echoerr
echoerr "EXAMPLE: (bash script lines)"
echoerr "/bin/bash bkgpslog -e -c \\"
echoerr "-r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \\"
-h | --help) showUsage; exit 1;; # Display usage.
--version) showVersion; exit 1;; # Show version
-v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
- -o | --output) if [ -d "$2" ]; then DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; shift; fi ;; # Define output directory.
+ -o | --output) if [ -d "$2" ]; then DIR_OUT="$2"; vbm "DEBUG:DIR_OUT:$DIR_OUT"; shift; fi ;; # Define output directory.
-e | --encrypt) OPTION_ENCRYPT="true"; vbm "DEBUG:Encrypted output mode enabled.";;
-r | --recipient) # Add 'age' recipient via public key string
recPubKeys+=("$2"); vbm "pubkey added:""$2"; shift;;
-c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";;
- *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
+ -z | --time-zone) try setTimeZoneEV "$2"; shift;;
+ -t | --temp-dir) OPTION_TMPDIR="true" && TMP_DIR_PRIORITY="$2"; shift;;
+ *) echoerr "ERROR: Unrecognized argument: $1"; echoerr "STATUS:All arguments:$*"; exit 1;; # Handle unrecognized options.
esac
shift
done
} # Argument Processing
+setTimeZoneEV(){
+ # Desc: Set time zone environment variable TZ
+ # Usage: setTimeZoneEV arg1
+ # Input: arg1: 'date'-compatible timezone string (ex: "America/New_York")
+ # TZDIR env var (optional; default: "/usr/share/zoneinfo")
+ # Output: exports TZ
+ # exit code 0 on success
+ # exit code 1 on incorrect number of arguments
+ # exit code 2 if unable to validate arg1
+ # Depends: yell, printenv, bash 5
+ # Tested on: Debian 10
+ ARG1="$1"
+ local tzDir returnState
+ if ! [[ $# -eq 1 ]]; then
+ yell "ERROR:Invalid argument count.";
+ return 1;
+ fi
+
+ # Read TZDIR env var if available
+ if printenv TZDIR 1>/dev/null 2>&1; then
+ tzDir="$(printenv TZDIR)";
+ else
+ tzDir="/usr/share/zoneinfo";
+ fi
+
+ # Validate TZ string
+ if ! [[ -f "$tzDir"/"$ARG1" ]]; then
+ yell "ERROR:Invalid time zone argument.";
+ return 2;
+ else
+ # Export ARG1 as TZ environment variable
+ TZ="$ARG1" && export TZ && returnState="true";
+ fi
+
+ # Determine function return code
+ if [ "$returnState" = "true" ]; then
+ return 0;
+ fi
+} # Exports TZ environment variable
timeUntilNextDay(){
# Desc: Report seconds until next day.
# Output: stdout: integer seconds until next day
TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
echo "$TIME_CURRENT_SHORT";
-} # Get date&time without separators
+} # Get YYYYmmddTHHMMSS±zzzz
+dateShort(){
+ # Desc: Date without separators (YYYYmmdd)
+ # Usage: dateShort
+ # Output: stdout: date (ISO-8601, no separators)
+ local TIME_CURRENT DATE_CURRENT_SHORT
+ TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
+ DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)"; # Produce separator-less current date with resolution 1 day.
+ echo "$DATE_CURRENT_SHORT";
+} # Get YYYYmmdd
+timeDuration(){
+ # Desc: Output approximate time duration string before given time (default:current date)
+ # Ref/Attrib: ISO-8601:2004(E), §4.4.4.2 Representations of time intervals by duration and context information
+ # Note: "1 month" ("P1M") is assumed to be "30 days" (see ISO-8601:2004(E), §2.2.1.2)
+ # Usage: timeDuration [arg1] ([arg2])
+ # Input: arg1: seconds as base 10 integer >= 0 (ex: 3601)
+ # arg2: precision level (optional; default=2)
+ # Output: stdout: ISO-8601 duration string (ex: "P1H1S", "P2Y10M15DT10H30M20S")
+ # Example: 'timeDuration 111111 3' yields 'P1DT6H51M'
+ # Depends: date 8 (gnucoreutils)
+ local returnState fullHours fullMinutes fullSeconds;
+ ARG1="$1";
+ ARG2="$2";
+ precision=2; # set default precision
+ returnState="true"; # set default return state
+
+ # Check that between one and two arguments is supplied
+ if ! { [[ $# -ge 1 ]] && [[ $# -le 2 ]]; }; then
+ yell "ERROR:Invalid number of arguments:$# . Exiting.";
+ returnState="ERROR_INPUT"; fi
+
+ # Check that arg1 provided
+ if [[ $# -ge 1 ]]; then
+ # Check that arg1 is a positive integer
+ if [[ "$ARG1" =~ ^[[:digit:]]+$ ]]; then
+ arg1Valid="true";
+ else
+ yell "ERROR:ARG1 not a digit.";
+ returnState="ERROR_INPUT";
+ arg1Valid="false";
+ fi
+ else
+ yell "ERROR:No argument provided. Exiting.";
+ exit 1;
+ fi
+
+ # Consider whether arg2 was provided
+ if [[ $# -eq 2 ]]; then
+ # Check that the second arg is a positive integer
+ if [[ "$ARG2" =~ ^[[:digit:]]+$ ]] && [[ "ARG2" -gt 0 ]]; then
+ arg2Valid="true";
+ precision="$ARG2";
+ else
+ yell "ERROR:ARG2 not a positive integer. (is $ARG2 ). Leaving early.";
+ returnState="ERROR_INPUT";
+ arg2Valid="false";
+ fi;
+ else
+ arg2Valid="false";
+ fi;
+
+ remainder="$ARG1" ; # seconds
+ ## Calculate full years Y, update remainder
+ fullYears=$(( remainder / (365*24*60*60) ));
+ remainder=$(( remainder - (fullYears*365*24*60*60) ));
+ ## Calculate full months M, update remainder
+ fullMonths=$(( remainder / (30*24*60*60) ));
+ remainder=$(( remainder - (fullMonths*30*24*60*60) ));
+ ## Calculate full days D, update remainder
+ fullDays=$(( remainder / (24*60*60) ));
+ remainder=$(( remainder - (fullDays*24*60*60) ));
+ ## Calculate full hours H, update remainder
+ fullHours=$(( remainder / (60*60) ));
+ remainder=$(( remainder - (fullHours*60*60) ));
+ ## Calculate full minutes M, update remainder
+ fullMinutes=$(( remainder / (60) ));
+ remainder=$(( remainder - (fullMinutes*60) ));
+ ## Calculate full seconds S, update remainder
+ fullSeconds=$(( remainder / (1) ));
+ remainder=$(( remainder - (remainder*1) ));
+ ## Check which fields filled
+ if [[ $fullYears -gt 0 ]]; then hasYears="true"; else hasYears="false"; fi
+ if [[ $fullMonths -gt 0 ]]; then hasMonths="true"; else hasMonths="false"; fi
+ if [[ $fullDays -gt 0 ]]; then hasDays="true"; else hasDays="false"; fi
+ if [[ $fullHours -gt 0 ]]; then hasHours="true"; else hasHours="false"; fi
+ if [[ $fullMinutes -gt 0 ]]; then hasMinutes="true"; else hasMinutes="false"; fi
+ if [[ $fullSeconds -gt 0 ]]; then hasSeconds="true"; else hasSeconds="false"; fi
+
+ ## Determine which fields to display (see ISO-8601:2004 §4.4.3.2)
+ witherPrecision="false"
+
+ ### Years
+ if $hasYears && [[ $precision -gt 0 ]]; then
+ displayYears="true";
+ witherPrecision="true";
+ else
+ displayYears="false";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+ ### Months
+ if $hasMonths && [[ $precision -gt 0 ]]; then
+ displayMonths="true";
+ witherPrecision="true";
+ else
+ displayMonths="false";
+ fi;
+ if $witherPrecision && [[ $precision -gt 0 ]]; then
+ displayMonths="true";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+ ### Days
+ if $hasDays && [[ $precision -gt 0 ]]; then
+ displayDays="true";
+ witherPrecision="true";
+ else
+ displayDays="false";
+ fi;
+ if $witherPrecision && [[ $precision -gt 0 ]]; then
+ displayDays="true";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+ ### Hours
+ if $hasHours && [[ $precision -gt 0 ]]; then
+ displayHours="true";
+ witherPrecision="true";
+ else
+ displayHours="false";
+ fi;
+ if $witherPrecision && [[ $precision -gt 0 ]]; then
+ displayHours="true";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+ ### Minutes
+ if $hasMinutes && [[ $precision -gt 0 ]]; then
+ displayMinutes="true";
+ witherPrecision="true";
+ else
+ displayMinutes="false";
+ fi;
+ if $witherPrecision && [[ $precision -gt 0 ]]; then
+ displayMinutes="true";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+ ### Seconds
+
+ if $hasSeconds && [[ $precision -gt 0 ]]; then
+ displaySeconds="true";
+ witherPrecision="true";
+ else
+ displaySeconds="false";
+ fi;
+ if $witherPrecision && [[ $precision -gt 0 ]]; then
+ displaySeconds="true";
+ fi;
+ if $witherPrecision; then ((precision--)); fi;
+
+
+
+ ## Determine whether or not the "T" separator is needed to separate date and time elements
+ if ( $displayHours || $displayMinutes || $displaySeconds); then
+ displayDateTime="true"; else displayDateTime="false"; fi
+
+ ## Construct duration output string
+ OUTPUT="P"
+ if $displayYears; then
+ OUTPUT=$OUTPUT$fullYears"Y"; fi
+ if $displayMonths; then
+ OUTPUT=$OUTPUT$fullMonths"M"; fi
+ if $displayDays; then
+ OUTPUT=$OUTPUT$fullDays"D"; fi
+ if $displayDateTime; then
+ OUTPUT=$OUTPUT"T"; fi
+ if $displayHours; then
+ OUTPUT=$OUTPUT$fullHours"H"; fi
+ if $displayMinutes; then
+ OUTPUT=$OUTPUT$fullMinutes"M"; fi
+ if $displaySeconds; then
+ OUTPUT=$OUTPUT$fullSeconds"S"; fi
+
+ ## Output duration string to stdout
+ if [[ "$returnState" = "true" ]]; then echo "$OUTPUT"; fi
+
+ #===Determine function return code===
+ if [ "$returnState" = "true" ]; then
+ return 0;
+ else
+ echo "$returnState" 1>&2;
+ return 1;
+ fi
+
+} # Get duration (ex: PT10M4S )
+displayMissing() {
+ # Desc: Displays missing apps, files, and dirs
+ # Usage: displayMissing
+ # Input: associative arrays: appRollCall, fileRollCall, dirRollCall
+ # Output: stderr messages
+ #==BEGIN Display errors==
+ #===BEGIN Display Missing Apps===
+ missingApps="Missing apps :"
+ #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
+ for key in "${!appRollCall[@]}"; do
+ value="${appRollCall[$key]}"
+ if [ "$value" = "false" ]; then
+ #echo "DEBUG:Missing apps: $key => $value";
+ missingApps="$missingApps""$key "
+ appMissing="true"
+ fi
+ done
+ if [ "$appMissing" = "true" ]; then # Only indicate if an app is missing.
+ echo "$missingApps" 1>&2;
+ fi
+ #===END Display Missing Apps===
+
+ #===BEGIN Display Missing Files===
+ missingFiles="Missing files:"
+ #for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done
+ for key in "${!fileRollCall[@]}"; do
+ value="${fileRollCall[$key]}"
+ if [ "$value" = "false" ]; then
+ #echo "DEBUG:Missing files: $key => $value";
+ missingFiles="$missingFiles""$key "
+ fileMissing="true"
+ fi
+ done
+ if [ "$fileMissing" = "true" ]; then # Only indicate if an app is missing.
+ echo "$missingFiles" 1>&2;
+ fi
+ #===END Display Missing Files===
+
+ #===BEGIN Display Missing Directories===
+ missingDirs="Missing dirs:"
+ #for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done
+ for key in "${!dirRollCall[@]}"; do
+ value="${dirRollCall[$key]}"
+ if [ "$value" = "false" ]; then
+ #echo "DEBUG:Missing dirs: $key => $value";
+ missingDirs="$missingDirs""$key "
+ dirMissing="true"
+ fi
+ done
+ if [ "$dirMissing" = "true" ]; then # Only indicate if an dir is missing.
+ echo "$missingDirs" 1>&2;
+ fi
+ #===END Display Missing Directories===
+
+ #==END Display errors==
+} # Display missing apps, files, dirs
+setScriptTTL() {
+ #Desc: Sets script TTL
+ #Usage: setScriptTTL arg1
+ #Input: arg1: "day" or "hour"
+ #Output: scriptTTL
+ #Depends: timeUntilNextHour or timeUntilNextDay
+ local ARG1
+ ARG1="$1"
+ if [[ "$ARG1" = "day" ]]; then
+ # Set script lifespan to end at start of next day
+ if ! scriptTTL="$(timeUntilNextDay)"; then
+ if [[ "$scriptTTL" -eq 0 ]]; then
+ ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
+ else
+ yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
+ fi;
+ fi;
+ elif [[ "$ARG1" = "hour" ]]; then
+ # Set script lifespan to end at start of next hour
+ if ! scriptTTL="$(timeUntilNextHour)"; then
+ if [[ "$scriptTTL" -eq 0 ]]; then
+ ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
+ else
+ yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
+ fi;
+ fi;
+ else
+ yell "ERROR:Invalid argument for setScriptTTL function."; exit 1;
+ fi
+} # Seconds until next (day|hour).
main() {
processArguments "$@" # 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_TMP_DIR";
+ 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"; # 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
done
vbm "DEBUG:Finished processing recPubKeys array";
# Form age command string
- CMD_ENCRYPT=" | age ""$recipients ";
+ CMD_ENCRYPT="age ""$recipients ";
CMD_ENCRYPT_SUFFIX=".age";
else
yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1;
fi
else
- CMD_ENCRYPT="";
+ CMD_ENCRYPT="tee /dev/null ";
CMD_ENCRYPT_SUFFIX="";
vbm "DEBUG:Encryption not enabled."
fi
-
if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active
if checkapp gzip; then # Check if gzip available
- CMD_COMPRESS=" | gzip ";
+ CMD_COMPRESS="gzip ";
CMD_COMPRESS_SUFFIX=".gz";
else
yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1;
+ fi
else
- CMD_COMPRESS="";
+ CMD_COMPRESS="tee /dev/null ";
CMD_COMPRESS_SUFFIX="";
vbm "DEBUG:Compression not enabled."
fi
+
+ # Check that critical apps and dirs are available, displag missing ones.
+ if ! checkapp gpspipe tar && ! checkdir "$DIR_OUT" "/dev/shm"; then
+ yell "ERROR:Critical components missing.";
+ displayMissing; yell "Exiting."; exit 1; fi
+
+ # Set script lifespan
+ setScriptTTL "$SCRIPT_TTL";
+
+ # File name substring: encoded bufferTTL
+ bufferTTL_STR="$(timeDuration $BUFFER_TTL)";
+
+ # Init temp working dir
+ try mkdir "$DIR_TMP" && vbm "DEBUG:Working dir creatd at:$DIR_TMP"
+
+ # Initialize 'tar' archive
+ ## Define output tar path (note: each day gets *one* tar file (Ex: "20200731..hostname_location.[.gpx.gz].tar"))
+ PATHOUT_TAR="$DIR_OUT"/"$(dateShort)".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar
+ ## Write bkgpslog version to DIR_TMP/VERSION
+ echo "$0"" Version:""$SCRIPT_VERSION" >> "$DIR_TMP/VERSION" && vbm "DEBUG:VERSION created."
+ ## Check if PATHOUT_TAR already exists.
+ if [[ -f "$PATHOUT_TAR" ]]; then
+ ### Check if preexisting tar is appendable.
+ PATHOUT_APPENDTEST="$DIR_TMP"/"$(dateTimeShort)..append_test.txt"
+ echo "$(dateTimeShort)" >> "$PATHOUT_APPENDTEST"; && vbm "DEBUG:""$PATHOUT_APPENDTEST"" created."
+ if ! tar --append --directory="$DIR_TMP" --file="$PATHOUT_TAR" "$(basename "$PATHOUT_APPENDTEST")"; then
+ ### If not appendable, label tar broken, move tar, proceed.
+ mv "$PATHOUT_TAR" "${PATHOUT_TAR%.*}""-broken$(dateTimeShort)".tar
+ fi
+ else
+ ### If (no preexisting|appendable) tar found, create empty tar archive at PATHOUT_TAR
+ try tar --create --directory="$DIR_TMP" --file="$PATHOUT_TAR" --files-from=/dev/null && vbm "DEBUG:""$PATHOUT_TAR"" created."
+ fi
+ ## Append VERSION file to PATHOUT_TAR
+ try tar --append --directory="$DIR_TMP" --file="$PATHOUT_TAR" "VERSION" && vbm "DEBUG:VERSION added to $PATHOUT_TAR"
-
- if checkapp gpspipe && checkdir "$DIROUT"; then
-
- # # Set script lifespan to end at start of next day
- # if ! scriptTTL="$(timeUntilNextDay)"; then
- # if [[ "$scriptTTL" -eq 0 ]]; then
- # ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
- # else
- # yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
- # fi;
- # fi;
+ # Record gps data until script lifespan ends
+ declare debugCounter; debugCounter="0"; # set debug counter
+ timeStart=$(dateTimeShort); # Note start time
+ while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
+ # Determine file paths (time is start of buffer period)
+ FILEOUT_BASENAME="$timeStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S
+ ## Files saved to DIR_TMP
+ PATHOUT_NMEA="$DIR_TMP"/"$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
+ PATHOUT_GPX="$DIR_TMP"/"$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
+ PATHOUT_KML="$DIR_TMP"/"$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
+ ## 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""$CMD_ENCRYPT_SUFFIX".tar
+ # Define GPS conversion commands
+ CMD_CONV_NMEA="tee /dev/null " ; # tee as passthrough
+ CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " ; # convert NMEA to GPX
+ CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " ; # convert NMEA to KML
+ # Fill Bash variable buffer
+ bufferBash="$(timeout "$BUFFER_TTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds
+ # Process bufferBash, save secured chunk set to DIR_TMP
+ echo "$bufferBash" | $CMD_CONV_NMEA | $CMD_COMPRESS | $CMD_ENCRYPT > "$PATHOUT_NMEA" & # Create NMEA file (secured if requested)
+ echo "$bufferBash" | $CMD_CONV_GPX | $CMD_COMPRESS | $CMD_ENCRYPT > "$PATHOUT_GPX" & # Create GPX file (secured if requested)
+ echo "$bufferBash" | $CMD_CONV_KML | $CMD_COMPRESS | $CMD_ENCRYPT > "$PATHOUT_KML" & # Create KML file (secured if requested)
+ vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
+ # Append each secured chunk in memory dir (DIR_TMP) to file on disk (PATHOUT_TAR in DIR_OUT)
+ try tar --append --directory="$(dirname $"PATHOUT_NMEA")" --file="$PATHOUT_TAR" "$(basename "$PATHOUT_NMEA")" && \
+ vbm "DEBUG:Appended NMEA location data $PATHOUT_NMEA to $PATHOUT_TAR";
+ try tar --append --directory="$(dirname $"PATHOUT_GPX")" --file="$PATHOUT_TAR" "$(basename "$PATHOUT_GPX")" && \
+ vbm "DEBUG:Appended GPX location data $PATHOUT_GPX to $PATHOUT_TAR";
+ try tar --append --directory="$(dirname $"PATHOUT_KML")" --file="$PATHOUT_TAR" "$(basename "$PATHOUT_KML")" && \
+ vbm "DEBUG:Appended KML location $PATHOUT_KML to $PATHOUT_TAR";
+ # Remove secured chunks from DIR_TMP
+ try rm "$PATHOUT_NMEA" "$PATHOUT_NMEA" "$PATHOUT_NMEA";
+ # Reset buffer and filenames
+ unset bufferBash FILEOUT_BASENAME PATHOUT_NMEA PATHOUT_GPX PATHOUT_KML PATHOUT_TAR;
+ ((debugCounter++))
+ done
- # Set script lifespan to end at start of next hour
- if ! scriptTTL="$(timeUntilNextHour)"; then
- if [[ "$scriptTTL" -eq 0 ]]; then
- ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
- else
- yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
- fi;
- fi;
-
- # Determine buffer lifespan
- bufferTTL="60";
-
- # Record gps data until script lifespan ends
- declare debugCounter; debugCounter="0"
- while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
- ((debugCounter++))
- # Determine output file paths (time is start of buffer period)
- FILEOUT_BASENAME="$(dateTimeShort)""--P""$bufferTTL""S..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S
- FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
- FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
- FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ;
- # Fill buffer
- buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds
- # Process and save buffers
- echo "$buffer" "$CMD_COMPRESS" "$CMD_ENCRYPT" > "$DIROUT"/"$FILEOUT_NMEA" & # Save NMEA format
- echo "$buffer" | gpsbabel -i nmea -f - -o gpx -F - "$CMD_COMPRESS" "$CMD_ENCRYPT" > "$DIROUT"/"$FILEOUT_GPX" & # Save GPX format
- echo "$buffer" | gpsbabel -i nmea -f - -o kml -F - "$CMD_COMPRESS" "$CMD_ENCRYPT" > "$DIROUT"/"$FILEOUT_KML" & # Save KML format
- vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
- # Reset buffer and filenames
- unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML;
- done
- fi
+ # Remove DIR_TMP
+ try rm -r "$DIR_TMP";
} # Main function.
#===END Declare local script functions===
#==END Define script parameters==
main "$@" # Run main function.
exit 0;
#==END Perform work and exit==
-
-
-
- #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;
projects / EVA-2020-02.git / blobdiff