# 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==
## 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
+#### TZ="UTC"; export TZ; # Default time zone; overridden by '--time-zone=[str]' option
+DIR_TMP_DEFAULT="/dev/shm"; # Default parent of working directory
-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.
-DIR_TMP="/dev/shm/$(timeStart)..bkgpslog" # Define working directory for temproary files
+SCRIPT_TIME_START=$(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 \\"
-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.";;
- -z | --time-zone) try setTimeZoneEV "$1";;
- *) 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
} # 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.
bufferTTL_STR="$(timeDuration $BUFFER_TTL)";
# Init temp working dir
- try mkdir "$DIR_TMP" && vbm "DEBUG:Working dir creatd at:$DIR_TMP"
+ try mkdir "$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
+ 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" >> "$DIR_TMP/VERSION" && vbm "DEBUG:VERSION created."
- ## Create empty tar archive at PATHOUT_TAR
- try tar --create --directory="$DIR_TMP" --file="$PATHOUT_TAR" --files-from=/dev/null && vbm "DEBUG:bufferRam.tar created."
+ 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 $PATHOUT_TAR"
+ try tar --append --directory="$DIR_TMP" --file="$PATHOUT_TAR" "VERSION" && vbm "DEBUG:VERSION added to $PATHOUT_TAR";
# Record gps data until script lifespan ends
declare debugCounter; debugCounter="0"; # set debug counter
timeStart=$(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 tmpfs memory (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" ;
+ FILEOUT_BASENAME="$timeStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" && vbm "Set FILEOUT_BASENAME to:$FILEOUT_BASENAME";
+ ## Files saved to DIR_TMP
+ PATHOUT_NMEA="$DIR_TMP"/"$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "Set PATHOUT_NMEA to:$PATHOUT_NMEA";
+ PATHOUT_GPX="$DIR_TMP"/"$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "Set PATHOUT_GPX to:$PATHOUT_GPX";
+ PATHOUT_KML="$DIR_TMP"/"$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "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
+ PATHOUT_TAR="$DIR_OUT"/"$(dateShort)".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar && \
+ vbm "Set PATHOUT_TAR to:$PATHOUT_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
unset bufferBash FILEOUT_BASENAME PATHOUT_NMEA PATHOUT_GPX PATHOUT_KML PATHOUT_TAR;
((debugCounter++))
done
+
+ # Remove DIR_TMP
+ try rm -r "$DIR_TMP";
} # Main function.
#===END Declare local script functions===
#==END Define script parameters==
projects / EVA-2020-02.git / blobdiff