#!/bin/bash # Desc: Records gps data until midnight # Author: Steven Baltakatei Sandoval; License: GPLv3+ # 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 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=$(hostname); # Save hostname of system running this script. SCRIPT_VERSION="0.2.2"; # Define version of script. SCRIPT_NAME="bkgpslog"; # Define basename of script file. SCRIPT_URL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script. AGE_VERSION="1.0.0-beta2"; # Define version of age (encryption program) AGE_URL="https://github.com/FiloSottile/age/releases/tag/v1.0.0-beta2"; # Define website hosting age. declare -Ag appRollCall # Associative array for storing app status declare -Ag fileRollCall # Associative array for storing file status declare -Ag dirRollCall # Associative array for storing dir status declare -a recPubKeys # for processArguments function declare recipients # for main function ## Initialize variables OPTION_VERBOSE=""; OPTION_ENCRYPT=""; OPTION_COMPRESS=""; OPTION_TMPDIR=""; #===BEGIN Declare local script functions=== checkapp() { # Desc: If arg is a command, save result in assoc array 'appRollCall' # Usage: checkapp arg1 arg2 arg3 ... # Input: global assoc. array 'appRollCall' # Output: adds/updates key(value) to global assoc array 'appRollCall' local returnState #echo "DEBUG:$(date +%S.%N)..Starting checkapp function." #echo "DEBUG:args: $@" #echo "DEBUG:returnState:$returnState" #===Process Args=== for arg in "$@"; do #echo "DEBUG:processing arg:$arg" if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command appRollCall[$arg]="true"; #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]} if ! [ "$returnState" = "false" ]; then returnState="true"; fi else appRollCall[$arg]="false"; returnState="false"; fi done #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done #echo "DEBUG:evaluating returnstate. returnState:"$returnState #===Determine function return code=== if [ "$returnState" = "true" ]; then #echo "DEBUG:checkapp returns true for $arg"; return 0; else #echo "DEBUG:checkapp returns false for $arg"; return 1; fi } # Check that app exists checkfile() { # Desc: If arg is a file path, save result in assoc array 'fileRollCall' # Usage: checkfile arg1 arg2 arg3 ... # Input: global assoc. array 'fileRollCall' # Output: adds/updates key(value) to global assoc array 'fileRollCall'; # Output: returns 0 if app found, 1 otherwise local returnState #===Process Args=== for arg in "$@"; do #echo "DEBUG:processing arg:$arg" if [ -f "$arg" ]; then fileRollCall["$arg"]="true"; #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]} if ! [ "$returnState" = "false" ]; then returnState="true"; fi else fileRollCall["$arg"]="false"; returnState="false"; fi done #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done #echo "DEBUG:evaluating returnstate. returnState:"$returnState #===Determine function return code=== if [ "$returnState" = "true" ]; then #echo "DEBUG:checkapp returns true for $arg"; return 0; else #echo "DEBUG:checkapp returns false for $arg"; return 1; fi } # Check that file exists checkdir() { # Desc: If arg is a dir path, save result in assoc array 'dirRollCall' # Usage: checkdir arg1 arg2 arg3 ... # Input: global assoc. array 'dirRollCall' # Output: adds/updates key(value) to global assoc array 'dirRollCall'; # Output: returns 0 if app found, 1 otherwise local returnState #===Process Args=== for arg in "$@"; do #echo "DEBUG:processing arg:$arg" if [ -d "$arg" ]; then dirRollCall["$arg"]="true"; #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]} if ! [ "$returnState" = "false" ]; then returnState="true"; fi elif [ "$arg" = "" ]; then dirRollCall["$arg"]="false"; returnState="false"; else returnState="false"; fi done #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done #echo "DEBUG:evaluating returnstate. returnState:"$returnState #===Determine function return code=== if [ "$returnState" = "true" ]; then #echo "DEBUG:checkapp returns true for $arg"; return 0; else #echo "DEBUG:checkapp returns false for $arg"; return 1; fi } # Check that dir exists # Yell, Die, Try Three-Fingered Claw technique # Ref/Attrib: https://stackoverflow.com/a/25515370 yell() { echo "$0: $*" >&2; } die() { yell "$*"; exit 111; } try() { "$@" || die "cannot $*"; } echoerr() { echo "$@" 1>&2; # Define stderr echo function. } # Define stderr message function. showUsage() { echoerr "USAGE:" echoerr " bkgpslog [ options ]" echoerr echoerr "OPTIONS:" echoerr " -h, --help" echoerr " Display help information." echoerr echoerr " --version" echoerr " Display script version." echoerr echoerr " -v, --verbose" echoerr " Display debugging info." echoerr echoerr " -e, --encrypt" echoerr " Encrypt output." echoerr echoerr " -r, --recipient [ pubkey string ]" 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 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 \\" echoerr "-r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \\" echoerr "-o ~/Sync/Location" } # Display information on how to use this script. showVersion() { echoerr "$SCRIPT_VERSION" } # Display script version. vbm() { # Usage: vbm "DEBUG:verbose message here" # Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true". # Input: # - OPTION_VERBOSE variable set by processArguments function. (ex: "true", "false") # - "$@" positional arguments fed to this function. # Output: stderr # Script function dependencies: echoerr # External function dependencies: echo # Last modified: 2020-04-11T23:57Z # Last modified by: Steven Baltakatei Sandoval # License: GPLv3+ # Ref./Attrib: if [ "$OPTION_VERBOSE" = "true" ]; then FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds. echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text. fi # End function return 0; # Function finished. } # Verbose message display function. processArguments() { while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0). #echoerr "DEBUG:Starting processArguments while loop." #echoerr "DEBUG:Provided arguments are:""$*" case "$1" in -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 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 "STATUS:pubkey added:""$2"; shift;; -c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";; -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. # Version: 1.0.0 # Output: stdout: integer seconds until next day # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 # Usage: timeUntilNextDay # Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi # Depends: date 8, echo 8, yell, try local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second. SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second). if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then returnState="true"; elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then returnState="warning_zero"; yell "WARNING:Reported time until next day exactly zero."; elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then returnState="warning_negative"; yell "WARNING:Reported time until next day is negative."; fi try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report # Determine function return code if [[ "$returnState" = "true" ]]; then return 0; elif [[ "$returnState" = "warning_zero" ]]; then return 1; elif [[ "$returnState" = "warning_negative" ]]; then return 2; fi } # Report seconds until next day timeUntilNextHour(){ # Desc: Report seconds until next hour # Version 1.0.0 # Output: stdout: integer seconds until next hour # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 # Usage: timeUntilNextHour # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second. TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second. SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second). if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then returnState="true"; elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then returnState="warning_zero"; yell "WARNING:Reported time until next hour exactly zero."; elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then returnState="warning_negative"; yell "WARNING:Reported time until next hour is negative."; fi try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report # Determine function return code if [[ "$returnState" = "true" ]]; then return 0; elif [[ "$returnState" = "warning_zero" ]]; then return 1; elif [[ "$returnState" = "warning_negative" ]]; then return 2; fi } # Report seconds until next hour dateTimeShort(){ # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz) # Usage: dateTimeShort # Output: stdout: timestamp (ISO-8601, no separators) local TIME_CURRENT TIME_CURRENT_SHORT TIME_CURRENT="$(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 "$TIME_CURRENT_SHORT"; } # Get YYYYmmddTHHMMSS±zzzz dateShort(){ # Desc: Date without separators (YYYYmmdd) # Usage: dateShort # Output: stdout: date (ISO-8601, no separators) local TIME_CURRENT DATE_CURRENT_SHORT TIME_CURRENT="$(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: Given seconds, output ISO-8601 duration string # 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 [1:seconds] ([2:precision]) # Version: 1.0.3 # 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") # exit code 0: success # exit code 1: error_input # exit code 2: error_unknown # Example: 'timeDuration 111111 3' yields 'P1DT6H51M' # Depends: date 8 (gnucoreutils), yell, local returnState argSeconds argPrecision remainder precision witherPrecision local fullYears fullMonths fullDays fullHours fullMinutes fullSeconds local displayYears displayMonths displayDays displayHours displayMinutes displaySeconds local hasYears hasMonths hasDays hasHours hasMinutes hasSeconds argSeconds="$1"; # read arg1 (seconds) argPrecision="$2"; # read arg2 (precision) precision=2; # set default precision # 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 argSeconds provided if [[ $# -ge 1 ]]; then ## Check that argSeconds is a positive integer if [[ "$argSeconds" =~ ^[[:digit:]]+$ ]]; then : else yell "ERROR:argSeconds not a digit."; returnState="error_input"; fi else yell "ERROR:No argument provided. Exiting."; exit 1; fi # Consider whether argPrecision was provided if [[ $# -eq 2 ]]; then # Check that argPrecision is a positive integer if [[ "$argPrecision" =~ ^[[:digit:]]+$ ]] && [[ "$argPrecision" -gt 0 ]]; then precision="$argPrecision"; else yell "ERROR:argPrecision not a positive integer. (is $argPrecision ). Leaving early."; returnState="error_input"; fi; else : fi; remainder="$argSeconds" ; # 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$fullSeconds"S"; fi ## Output duration string to stdout echo "$OUTPUT" && returnState="true"; #===Determine function return code=== if [ "$returnState" = "true" ]; then return 0; elif [ "$returnState" = "error_input" ]; then yell "ERROR:input"; return 1; else yell "ERROR:Unknown"; return 2; 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). checkMakeTar() { # Desc: Checks that a valid tar archive exists, creates one otherwise # Usage: checkMakeTar [ path ] # Version: 1.0.1 # Input: arg1: path of tar archive # Output: exit code 0 : tar readable # exit code 1 : tar missing; created # exit code 2 : tar not readable; moved; replaced # Depends: try, tar, date local PATH_TAR returnFlag0 returnFlag1 returnFlag2 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 returnFlag0="tar valid"; 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)" && \ returnFlag1="tar moved"; else ### F: - : fi ## F2: Create tar archive, return 0 try tar --create --file="$PATH_TAR" --files-from=/dev/null && \ returnFlag2="tar created"; fi # Determine function return code if [[ "$returnFlag0" = "tar valid" ]]; then return 0; elif [[ "$returnFlag2" = "tar created" ]] && ! [[ "$returnFlag1" = "tar moved" ]]; then return 1; # tar missing so created elif [[ "$returnFlag2" = "tar created" ]] && [[ "$returnFlag1" = "tar moved" ]]; then return 2; # tar not readable so moved; replaced 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:$FN:Finished appendArgTar()." } # Append Bash var to file appended to Tar archive magicWriteVersion() { # Desc: Appends time-stamped VERSION to PATHOUT_TAR # Usage: magicWriteVersion # Version: 0.1.0 # Input: CONTENT_VERSION, FILEOUT_VERSION, PATHOUT_TAR, DIR_TMP # Input: SCRIPT_VERSION, SCRIPT_URL, AGE_VERSION, AGE_URL, SCRIPT_HOSTNAME # Output: appends tar PATHOUT_TAR # Depends: dateTimeShort, appendArgTar local CONTENT_VERSION pubKeyIndex # Set VERSION file name FILEOUT_VERSION="$(dateTimeShort)..VERSION"; # Gather VERSION data in CONTENT_VERSION CONTENT_VERSION="SCRIPT_VERSION=$SCRIPT_VERSION"; #CONTENT_VERSION="$CONTENT_VERSION""\n"; CONTENT_VERSION="$CONTENT_VERSION""\n""SCRIPT_NAME=$SCRIPT_NAME"; CONTENT_VERSION="$CONTENT_VERSION""\n""SCRIPT_URL=$SCRIPT_URL"; CONTENT_VERSION="$CONTENT_VERSION""\n""AGE_VERSION=$AGE_VERSION"; CONTENT_VERSION="$CONTENT_VERSION""\n""AGE_URL=$AGE_URL"; CONTENT_VERSION="$CONTENT_VERSION""\n""DATE=$(date --iso-8601=seconds)"; CONTENT_VERSION="$CONTENT_VERSION""\n""HOSTNAME=$SCRIPT_HOSTNAME"; ## Add list of recipient pubkeys for pubkey in "${recPubKeysValid[@]}"; do ((pubKeyIndex++)) CONTENT_VERSION="$CONTENT_VERSION""\n""PUBKEY_$pubKeyIndex=$pubkey"; done ## Process newline escapes CONTENT_VERSION="$(echo -e "$CONTENT_VERSION")" # Write CONTENT_VERSION as file FILEOUT_VERSION and write-append to PATHOUT_TAR appendArgTar "$CONTENT_VERSION" "$FILEOUT_VERSION" "$PATHOUT_TAR" "$DIR_TMP"; } # bkgpslog: write version data to PATHOUT_TAR via appendArgTar() 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()."; # 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 # 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:""$recipients"; #### Add validated pubkey to recPubKeysValid array recPubKeysValid+=("$pubkey") && vbm "DEBUG:recPubkeysValid:pubkey added:$pubkey"; else yell "ERROR:Exit code ""$?"". 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."; 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"; # seconds until next new SCRIPT_TTL (ex: "day" or "hour") # 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 && \ vbm "STATUS:Set PATHOUT_TAR to:$PATHOUT_TAR"; ## Check that PATHOUT_TAR is a tar. Rename old and create empty one otherwise. checkMakeTar "$PATHOUT_TAR" && vbm "DEBUG:Confirmed or Created to be a tar:$PATHOUT_TAR"; ## Append VERSION file to PATHOUT_TAR magicWriteVersion; # Record gps data until script lifespan ends declare debugCounter; debugCounter="0"; # set debug counter while [[ "$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 $debugCounter ." 1>&2; ((debugCounter++)) done # Remove DIR_TMP try rm -r "$DIR_TMP"; vbm "STATUS:Main function finished."; } # Main function. #===END Declare local script functions=== #==END Define script parameters== #==BEGIN Perform work and exit== main "$@" # Run main function. exit 0; #==END Perform work and exit==