X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02.git/blobdiff_plain/c97313bf00a1ec2d865f3c24ea52903d95160312..43897f67873890790cf5ede80a5af22650bbc400:/exec/bkgpslog diff --git a/exec/bkgpslog b/exec/bkgpslog index 7973f05..d8eeff7 100755 --- a/exec/bkgpslog +++ b/exec/bkgpslog @@ -1,23 +1,36 @@ #!/bin/bash - -# Desc: Records gps data until midnight -# Author: Steven Baltakatei Sandoval; License: GPLv3+ -# Usage: bkgpslog --output [output dir] +# Desc: Records gps data #==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 +bufferTTL="300"; # time between file writes +scriptTTL_TE="day"; # (day|hour) +#### TZ="UTC"; export TZ; # Default time zone; overridden by '--time-zone=[str]' option +dirTmpDefault="/dev/shm"; # Default parent of working directory + +scriptTimeStart=$(date +%Y%m%dT%H%M%S.%N); +PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case apps saved there +scriptHostname=$(hostname); # Save hostname of system running this script. +scriptVersion="0.5.8"; # Define version of script. +scriptName="bkgpslog"; # Define basename of script file. +scriptURL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script. +ageVersion="1.0.0-beta2"; # Define version of age (encryption program) +ageURL="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 +declare -a argRecPubKeys # for processArguments function +# declare -a errorHistory # for correcting buffer lag + +## Initialize variables +optionVerbose=""; optionEncrypt=""; optionCompress=""; optionTmpDir=""; +errReset=0; bufferTTL_AdjFloat=""; scriptTTL=""; #===BEGIN Declare local script functions=== +yell() { echo "$0: $*" >&2; } #o Yell, Die, Try Three-Fingered Claw technique +die() { yell "$*"; exit 111; } #o Ref/Attrib: https://stackoverflow.com/a/25515370 +try() { "$@" || die "cannot $*"; } #o checkapp() { # Desc: If arg is a command, save result in assoc array 'appRollCall' # Usage: checkapp arg1 arg2 arg3 ... @@ -118,13 +131,6 @@ checkdir() { 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. @@ -135,56 +141,60 @@ showUsage() { 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." - echoerr - echoerr " -o, --output [ directory ]" + echoerr " -r, --recipient [ string pubkey ]" + echoerr " Specify recipient. May be age or ssh pubkey." + echoerr " May be specified multiple times for multiple pubkeys." + echoerr " See https://github.com/FiloSottile/age" + echoerr " -o, --output [ path dir ]" echoerr " Specify output directory to save logs." - echoerr echoerr " -c, --compress" echoerr " Compress output with gzip (before encryption if enabled)." + echoerr " -z, --time-zone" + echoerr " Specify time zone. (ex: \"America/New_York\")" + echoerr " -t, --temp-dir [path dir]" + echoerr " Specify parent directory for temporary working directory." + echoerr " Default: \"/dev/shm\"" + echoerr " -R, --recipient-dir [path dir]" + echoerr " Specify directory containing files whose first lines are" + echoerr " to be interpreted as pubkey strings (see \\'-r\\' option)." + echoerr " -b, --buffer-ttl [integer]" + echoerr " Specify custom buffer period in seconds (default: 300 seconds)" + echoerr " -B, --script-ttl [integer]" + echoerr " Specify custom script time-to-live in seconds (default: \"day\")" echoerr echoerr "EXAMPLE: (bash script lines)" - echoerr "/bin/bash bkgpslog -e -c \\" + echoerr "/bin/bash bkgpslog -v -e -c \\" + echoerr "-z \"UTC\" -t \"/dev/shm\" \\" echoerr "-r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \\" echoerr "-r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \\" echoerr "-o ~/Sync/Location" } # Display information on how to use this script. showVersion() { - echoerr "$SCRIPT_VERSION" + echoerr "$scriptVersion" } # Display script version. vbm() { + # Description: Prints verbose message ("vbm") to stderr if optionVerbose is set to "true". # 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") - # - "$@" positional arguments fed to this function. + # Version 0.1.1 + # Input: arg1: string + # vars: optionVerbose # Output: stderr - # Script function dependencies: echoerr - # External function dependencies: echo - # Last modified: 2020-04-11T23:57Z - # Last modified by: Steven Baltakatei Sandoval - # License: GPLv3+ - # Ref./Attrib: - - if [ "$OPTION_VERBOSE" = "true" ]; then - FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds. - echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text. + # Depends: echo 8, date 8 + + if [ "$optionVerbose" = "true" ]; then + functionTime=$(date --iso-8601=ns); # Save current time in nano seconds. + echo "[$functionTime] ""$*" 1>&2; # Display argument text. fi # End function return 0; # Function finished. -} # Verbose message display function. +} # Displays message if optionVerbose true processArguments() { while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0). #echoerr "DEBUG:Starting processArguments while loop." @@ -192,141 +202,459 @@ processArguments() { 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 DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; 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. + -v | --verbose) optionVerbose="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. + -e | --encrypt) optionEncrypt="true"; vbm "DEBUG:Encrypted output mode enabled.";; # Enable encryption + -r | --recipient) optionRecipients="true"; argRecPubKeys+=("$2"); vbm "STATUS:pubkey added:""$2"; shift;; # Add recipients + -c | --compress) optionCompress="true"; vbm "DEBUG:Compressed output mode enabled.";; # Enable compression + -z | --time-zone) try setTimeZoneEV "$2"; shift;; # Set timestamp timezone + -t | --temp-dir) optionTmpDir="true" && argTempDirPriority="$2"; shift;; # Set time zone + -R | --recipient-dir) optionRecipients="true"; optionRecDir="true" && argRecDir="$2"; shift;; # Add recipient watch dir + -b | --buffer-ttl) optionCustomBufferTTL="true" && argCustomBufferTTL="$2"; shift;; # Set custom buffer period (default: 300 seconds) + -B | --script-ttl) optionCustomScriptTTL_TE="true" && argCustomScriptTTL="$2"; shift;; # Set custom script TTL (default: "day") + *) 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 + # Version 0.1.1 + # 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 + local tzDir returnState argTimeZone + + argTimeZone="$1" + 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 "$tzDir"/"$argTimeZone" ]]; then + yell "ERROR:Invalid time zone argument."; + return 2; + else + # Export ARG1 as TZ environment variable + TZ="$argTimeZone" && export TZ && returnState="true"; + fi + + # Determine function return code + if [ "$returnState" = "true" ]; then + return 0; + fi +} # Exports TZ environment variable timeUntilNextDay(){ # Desc: Report seconds until next day. + # Version: 1.0.2 # 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="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi - local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY - TIME_CURRENT="$(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 [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then + # Depends: date 8, echo 8, yell, try + + local returnState timeCurrent timeNextDay secondsUntilNextDay returnState + timeCurrent="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. + timeNextDay="$(date -d "$timeCurrent next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second. + secondsUntilNextDay="$(( $(date +%s -d "$timeNextDay") - $(date +%s -d "$timeCurrent") ))" ; # Calculate seconds until closest future midnight (res. 1 second). + if [[ "$secondsUntilNextDay" -gt 0 ]]; then returnState="true"; - elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then - returnState="WARNING_ZERO"; + elif [[ "$secondsUntilNextDay" -eq 0 ]]; then + returnState="warning_zero"; yell "WARNING:Reported time until next day exactly zero."; - elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then - returnState="WARNING_NEGATIVE"; + elif [[ "$secondsUntilNextDay" -lt 0 ]]; then + returnState="warning_negative"; yell "WARNING:Reported time until next day is negative."; fi - try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report + try echo "$secondsUntilNextDay"; # Report - #===Determine function return code=== + # Determine function return code if [[ "$returnState" = "true" ]]; then return 0; - elif [[ "$returnState" = "WARNING_ZERO" ]]; then + elif [[ "$returnState" = "warning_zero" ]]; then return 1; - elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then + elif [[ "$returnState" = "warning_negative" ]]; then return 2; fi } # Report seconds until next day timeUntilNextHour(){ # Desc: Report seconds until next hour + # Version 1.0.1 # 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 [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then + + local returnState timeCurrent timeNextHour secondsUntilNextHour + timeCurrent="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second. + timeNextHour="$(date -d "$timeCurrent next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second. + secondsUntilNextHour="$(( $(date +%s -d "$timeNextHour") - $(date +%s -d "$timeCurrent") ))"; # Calculate seconds until next hour (res. 1 second). + if [[ "$secondsUntilNextHour" -gt 0 ]]; then returnState="true"; - elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then - returnState="WARNING_ZERO"; + elif [[ "$secondsUntilNextHour" -eq 0 ]]; then + returnState="warning_zero"; yell "WARNING:Reported time until next hour exactly zero."; - elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then - returnState="WARNING_NEGATIVE"; + elif [[ "$secondsUntilNextHour" -lt 0 ]]; then + returnState="warning_negative"; yell "WARNING:Reported time until next hour is negative."; - fi + fi; - try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report + try echo "$secondsUntilNextHour"; # Report - #===Determine function return code=== + # Determine function return code if [[ "$returnState" = "true" ]]; then return 0; - elif [[ "$returnState" = "WARNING_ZERO" ]]; then + elif [[ "$returnState" = "warning_zero" ]]; then return 1; - elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then + elif [[ "$returnState" = "warning_negative" ]]; then return 2; - fi + fi; } # Report seconds until next hour dateTimeShort(){ # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz) - # Usage: dateTimeShort + # Usage: dateTimeShort ([str date]) + # Version 1.1.1 + # Input: arg1: 'date'-parsable timestamp string (optional) # 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 date&time without separators -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" - if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then - # Form age recipient string - recipients="$recipients""-r $pubkey "; - vbm "Added pubkey for forming age recipient string:""$pubkey"; - vbm "DEBUG:recipients:""$recipients"; - else - yell "ERROR:Exit code ""$?"". 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"; + # Depends: yell + local argTime timeCurrent timeInput timeCurrentShort + + argTime="$1"; + # Get Current Time + timeCurrent="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. + # Decide to parse current or supplied date + ## Check if time argument empty + if [[ -z "$argTime" ]]; then + ## T: Time argument empty, use current time + timeInput="$timeCurrent"; + else + ## F: Time argument exists, validate time + if date --date="$argTime" 1>/dev/null 2>&1; then + ### T: Time argument is valid; use it + timeInput="$argTime"; else - yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1; + ### F: Time argument not valid; exit + yell "ERROR:Invalid time argument supplied. Exiting."; exit 1; fi + fi + # Construct and deliver separator-les date string + timeCurrentShort="$(date -d "$timeInput" +%Y%m%dT%H%M%S%z)"; + echo "$timeCurrentShort"; +} # Get YYYYmmddTHHMMSS±zzzz +dateShort(){ + # Desc: Date without separators (YYYYmmdd) + # Usage: dateShort ([str date]) + # Version: 1.1.1 + # Input: arg1: 'date'-parsable timestamp string (optional) + # Output: stdout: date (ISO-8601, no separators) + # Depends: yell + local argTime timeCurrent timeInput dateCurrentShort + + argTime="$1"; + # Get Current Time + timeCurrent="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. + # Decide to parse current or supplied date + ## Check if time argument empty + if [[ -z "$argTime" ]]; then + ## T: Time argument empty, use current time + timeInput="$timeCurrent"; else - CMD_ENCRYPT="tee /dev/null "; - CMD_ENCRYPT_SUFFIX=""; - vbm "DEBUG:Encryption not enabled." + ## F: Time argument exists, validate time + if date --date="$argTime" 1>/dev/null 2>&1; then + ### T: Time argument is valid; use it + timeInput="$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 + dateCurrentShort="$(date -d "$timeInput" +%Y%m%d)"; # Produce separator-less current date with resolution 1 day. + echo "$dateCurrentShort"; +} # 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: 1.0.4 + # 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, bash 5, yell, + local argSeconds argPrecision precision returnState remainder + local fullYears fullMonths fullDays fullHours fullMinutes fullSeconds + local hasYears hasMonths hasDays hasHours hasMinutes hasSeconds + local witherPrecision output + local displayYears displayMonths displayDays displayHours displayMinutes displaySeconds + + argSeconds="$1"; # read arg1 (seconds) + argPrecision="$2"; # read arg2 (precision) + precision=2; # set default precision - if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active - if checkapp gzip; then # Check if gzip available - CMD_COMPRESS="gzip "; - CMD_COMPRESS_SUFFIX=".gz"; + # 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:Compression enabled but \"gzip\" not found. Exiting."; exit 1; + yell "ERROR:argSeconds not a digit."; + returnState="error_input"; fi else - CMD_COMPRESS="tee /dev/null "; - CMD_COMPRESS_SUFFIX=""; - vbm "DEBUG:Compression not enabled." + 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 [[ $fullSeconds -gt 0 ]]; then hasSeconds="true"; else hasSeconds="false"; fi - if checkapp gpspipe && checkdir "$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; + ## 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 + # Version 0.1.0 + # Input: associative arrays: appRollCall, fileRollCall, dirRollCall + # Output: stderr: messages indicating missing apps, file, or dirs + # Depends: bash 5, checkAppFileDir() + #==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 +magicSetScriptTTL() { + #Desc: Sets script_TTL seconds from provided time_element string argument + #Usage: magicSetScriptTTL [str time_element] + #Input: arg1: string (Ex: scriptTTL_TE; "day" or "hour") + #Output: var: scriptTTL (integer seconds) + #Depends: timeUntilNextHour, timeUntilNextDay + local argTimeElement + argTimeElement="$1" + if [[ "$argTimeElement" = "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 $?"; exit 1; + fi; + fi; + elif [[ "$argTimeElement" = "hour" ]]; then # Set script lifespan to end at start of next hour if ! scriptTTL="$(timeUntilNextHour)"; then if [[ "$scriptTTL" -eq 0 ]]; then @@ -335,34 +663,692 @@ main() { 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" ; - # Define GPS conversion commands - CMD_CONV_NMEA="tee /dev/null " - CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " - CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " - # Fill buffer - buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds - # Execute processing and save command string - echo "$buffer" | $CMD_CONV_NMEA | $CMD_COMPRESS | $CMD_ENCRYPT > $DIROUT/$FILEOUT_NMEA & # Save NMEA format - echo "$buffer" | $CMD_CONV_GPX | $CMD_COMPRESS | $CMD_ENCRYPT > $DIROUT/$FILEOUT_GPX & # Save GPX format - echo "$buffer" | $CMD_CONV_KML | $CMD_COMPRESS | $CMD_ENCRYPT > $DIROUT/$FILEOUT_KML & # Save KML format - vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2; - # Reset buffer and filenames - unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML; - done + else + yell "ERROR:Invalid argument for setScriptTTL function:$argTimeElement"; exit 1; fi +} # Seconds until next (day|hour). +checkMakeTar() { + # Desc: Checks that a valid tar archive exists, creates one otherwise + # Usage: checkMakeTar [ path ] + # Version: 1.0.2 + # 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: bash 5, date 8, tar 1, try() + local pathTar returnFlag0 returnFlag1 returnFlag2 + pathTar="$1"; + + # Check if file is a valid tar archive + if tar --list --file="$pathTar" 1>/dev/null 2>&1; then + ## T1: return success + returnFlag0="tar valid"; + else + ## F1: Check if file exists + if [[ -f "$pathTar" ]]; then + ### T: Rename file + try mv "$pathTar" "$pathTar""--broken--""$(date +%Y%m%dT%H%M%S)" && \ + returnFlag1="tar moved"; + else + ### F: - + : + fi; + ## F2: Create tar archive, return 0 + try tar --create --file="$pathTar" --files-from=/dev/null && \ + returnFlag2="tar created"; + fi; + + # Determine function return code + if [[ "$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: appendArgTar "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...) + # Version: 1.0.6 + # Input: arg1: data to be written + # arg2: file name of file to be inserted into tar + # arg3: tar archive path (must exist first) + # arg4: temporary working dir + # arg5+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ") + # Output: file written to disk + # Example: decrypt multiple large files in parallel + # appendArgTar "$(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" $HOME/archive.tar /tmp "gpg --decrypt" & + # Depends: bash 5, tar 1, yell() + # Ref/Attrib: Using 'eval' to construct command strings https://askubuntu.com/a/476533 + + local fn fileName tarPath tmpDir cmd0 cmd1 cmd2 cmd3 cmd4 + + # Save function name + fn="${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 tarPath="$3"; else yell "ERROR:$fn:Tar archive arg not a file."; exit 1; fi + + # Check temp dir arg + if ! [ -z "$4" ]; then tmpDir="$4"; else yell "ERROR:$fn:No temporary working dir set."; exit 1; fi + + # Set command strings + if ! [ -z "$5" ]; then cmd1="$5"; else cmd1="cat "; fi # command string 1 + if ! [ -z "$6" ]; then cmd2="$6"; else cmd2="cat "; fi # command string 2 + if ! [ -z "$7" ]; then cmd3="$7"; else cmd3="cat "; fi # command string 3 + if ! [ -z "$8" ]; then cmd4="$8"; else cmd4="cat "; fi # command string 4 + + # Input command + cmd0="echo \"\$1\"" + + # # Debug + # yell "DEBUG:STATUS:$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:tarPath:$tarPath" + # yell "DEBUG:STATUS:$fn:tmpDir:$tmpDir" + + # Write to temporary working dir + eval "$cmd0 | $cmd1 | $cmd2 | $cmd3 | $cmd4" > "$tmpDir"/"$fileName"; + + # Append to tar + try tar --append --directory="$tmpDir" --file="$tarPath" "$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: 1.0.3 + # 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" $HOME/archive.tar /tmp "gpg --decrypt" & + # Depends: bash 5, tar 1, yell() + + local fn fileName tarPath tmpDir + + # Save function name + fn="${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 tarPath="$3"; else yell "ERROR:$fn:Tar archive arg not a file:$3"; exit 1; fi + # Check temp dir arg + if ! [ -z "$4" ]; then tmpDir="$4"; else yell "ERROR:$fn:No temporary working dir set."; exit 1; fi + # Set command strings + if ! [ -z "$5" ]; then cmd1="$5"; else cmd1="cat "; fi # command string 1 + if ! [ -z "$6" ]; then cmd2="$6"; else cmd2="cat "; fi # command string 2 + if ! [ -z "$7" ]; then cmd3="$7"; else cmd3="cat "; fi # command string 3 + if ! [ -z "$8" ]; then cmd4="$8"; else cmd4="cat "; fi # command string 4 + + # Input command string + cmd0="cat \"\$1\"" + + # # Debug + # yell "DEBUG:STATUS:$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:tarPath:$tarPath" + # yell "DEBUG:STATUS:$fn:tmpDir:$tmpDir" + + # Write to temporary working dir + eval "$cmd0 | $cmd1 | $cmd2 | $cmd3 | $cmd4" > "$tmpDir"/"$fileName"; + + # Append to tar + try tar --append --directory="$tmpDir" --file="$tarPath" "$fileName"; + #yell "DEBUG:STATUS:$fn:Finished appendFileTar()." +} # Append file to Tar archive +checkAgePubkey() { + # Desc: Checks if string is an age-compatible pubkey + # Usage: checkAgePubkey [str pubkey] + # Version: 0.1.2 + # Input: arg1: string + # Output: return code 0: string is age-compatible pubkey + # return code 1: string is NOT an age-compatible pubkey + # age stderr (ex: there is stderr if invalid string provided) + # Depends: age (v0.1.0-beta2; https://github.com/FiloSottile/age/releases/tag/v1.0.0-beta2 ) + + argPubkey="$1"; + + if echo "test" | age -a -r "$argPubkey" 1>/dev/null; then + return 0; + else + return 1; + fi; +} # Check age pubkey +validateInput() { + # Desc: Validates Input + # Usage: validateInput [str input] [str input type] + # Version: 0.3.1 + # 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() + + local fn argInput argType + + # Save function name + 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 + + ## integer + if [[ "$argType" = "integer" ]]; then + if [[ "$argInput" =~ ^[[:digit:]]*$ ]]; then + return 0; fi; fi; + + ## time element (year, month, week, day, hour, minute, second) + if [[ "$argType" = "time_element" ]]; then + if [[ "$argInput" = "year" ]] || \ + [[ "$argInput" = "month" ]] || \ + [[ "$argInput" = "week" ]] || \ + [[ "$argInput" = "day" ]] || \ + [[ "$argInput" = "hour" ]] || \ + [[ "$argInput" = "minute" ]] || \ + [[ "$argInput" = "second" ]]; then + return 0; fi; fi; + + # Return error if no condition matched. + return 1; +} # Validates strings +timeEpochNS() { + # Desc: Get epoch nanoseconds + # Usage: timeEpochNS + # Version 0.2.3 + # Input: arg1: 'date'-parsable timestamp string (optional) + # Output: Nanoseconds since 1970-01-01 + # Depends: date 8, cut 8, yell() + # Ref/Attrib: Force base 10 Bash arith with '10#'. https://stackoverflow.com/a/24777667 + local argTime timeCurrent timeInput timeEpochFloat timeEpochInt + local timeEpochNsFrac timeEpochNs + + argTime="$1"; + + # Get Current Time + timeCurrent="$(date --iso-8601=ns)"; # Produce `date`-parsable current timestamp with resolution of 1 nanosecond. + + # Decide to parse current or supplied time + ## Check if time argument empty + if [[ -z "$argTime" ]]; then + ## T: Time argument empty, use current time + timeInput="$timeCurrent"; + else + ## F: Time argument exists, validate time + if date --date="$argTime" 1>/dev/null 2>&1; then + ### T: Time argument is valid; use it + timeInput="$argTime"; + else + ### F: Time argument not valid; exit + yell "ERROR:Invalid time argument supplied. Exiting."; exit 1; + fi; + fi; + # Construct and deliver nanoseconds since 1970-01-01 + timeEpochFloat="$(date --date="$timeInput" +%s.%N)"; # Save ssss.NNNNNNNNN + timeEpochInt="$(echo "$timeEpochFloat" | cut -d. -f1)"; # Get ssss + timeEpochNsFrac="$(echo "$timeEpochFloat" | cut -d. -f2)"; # Get NNNNNNNNN + timeEpochNs="$(( (10#"$timeEpochInt" * 10**9) + (10#"$timeEpochNsFrac") ))"; + echo "$timeEpochNs"; +} # Nanoseconds since 1970-01-01 +magicBufferSleepPID() { + # Desc: Compensates for lag so buffer rounds start every bufferTTL seconds + # Input: vars: bufferTTL, errReset + # # Input: array: errorHistory errResetx10e3 + # Output: vars: bufferTTL_AdjFloat + # Re/Attrib: https://en.wikipedia.org/wiki/PID_controller#Standard_versus_parallel_(ideal)_form + local buffer_ttl_ns k_p t_i t_d + local timeBufferStartNS timeBufferStartNSExp errNS errReset errRate + local adj buffer_ttl_adj_ns buffer_ttl_adj_int buffer_ttl_adj_floatfrac + # local errNSx10e3 errResetx10e3 errRatex10e3 + # local errorHistorySize + + # ## Define errorHistorySize + # errorHistorySize=100; + ## Define bufferTTL in nanoseconds + buffer_ttl_ns=$((bufferTTL * 10**9)) && vbm "buffer_ttl_ns:$buffer_ttl_ns"; + + ### PID Control factors + k_p=1; # Gain for compensating buffer round lag + t_i="$(((4)*buffer_ttl_ns/(1)))"; # Consider this number of past nanoseconds to eliminate error + t_d="$(((1)*buffer_ttl_ns/(1)))"; # Predict value this number of nanoseconds into the future + + # Calculate Error, errNS, in nanoseconds + ## Get current time + timeBufferStartNS="$(timeEpochNS)" && vbm "timeBufferStartNS :$timeBufferStartNS"; + ## Calculate expected time (from start time, current buffer round number, nominal bufferTTL) + timeBufferStartNSExp="$(( (timeBufferFirstNS) + (buffer_ttl_ns * bufferRound) ))" && vbm "timeBufferStartNSExp:$timeBufferStartNSExp"; + ## Calculate error (diff between timeBufferStartNSExp and timeBufferStartNS; usually negative) + errNS="$(( timeBufferStartNSExp - timeBufferStartNS ))" && vbm "errNS:$errNS"; +# errNSx10e3="$((errNS*10**3))" && vbm "errNSx10e3:$errNSx10e3"; + # ## Append error to errorHistory + # errorHistory+=("errNS"); + # ### Trim errorHistory array if over errorHistorySize + # while [[ "${#errorHistory[@]}" -gt "errorHistorySize" ]]; then do + # unset "errorHistory[0]"; # remove oldest entry, creating sparse array + # errorHistory=("${errorHistory[@]}"); # reindex sparse array + # vbm "STATUS:Trimmed errorHistory array. Entry count:${#errorHistory[@]}"; + # done; + + # Calculate errReset in nanoseconds^2 + ## errReset = int(errHistory(t),wrt(delta_buffer_ttl)) + ## Integrate errorHistory with respect to time + # for value in "${errorHistory[@]}"; do + # errReset=$(( errReset + ( value*buffer_ttl_ns ) )); + # done; + vbm "errReset(orig):$errReset" + errReset="$(( (errReset + (errNS*buffer_ttl_ns)) ))" && vbm "errReset(post):$errReset"; +# errResetx10e3="$(( ( errResetx10e3 + ( errNSx10e3 * buffer_ttl_ns ) )*10**3 ))" && vbm "errResetx10e3:$errResetx10e3"; + + # Calculate errRate in nanoseconds per nanosecond + errRate="$(( errNS / buffer_ttl_ns ))" && vbm "errRate:$errRate"; +# errRatex10e3="$(( ( errNSx10e3 ) / buffer_ttl_ns ))" && vbm "errRatex10e3:$errRatex10e3"; + + # Debug + vbm "errNS :$errNS"; + vbm "errResetTerm:$((errReset/t_i))"; + vbm "errRateTerm :$((errRate*t_d))"; + + # Calculate PID control signal + ## adj = k_p * (errNS + errReset/t_i + errRate*t_d) + adj="$(( k_p*(errNS + errReset/t_i + errRate*t_d) ))" && vbm "adj:$adj"; +# adj="$((k_p*(errNSx10e3 + (errResetx10e3/t_i) + (errRatex10e3*t_d) )/(10**3)))" && vbm "adj:$adj"; + + # Calculate bufferTTL_AdjFloat from adj (ns) + ## Calculate buffer_ttl_adj in nanoseconds (buffer_ttl_adj_ns = buffer_ttl_ns + adj) + buffer_ttl_adj_ns="$((buffer_ttl_ns + adj))" && vbm "buffer_ttl_adj_ns:$buffer_ttl_adj_ns"; + ## Calculate integer seconds + buffer_ttl_adj_int="$((buffer_ttl_adj_ns/(10**9)))" && vbm "buffer_ttl_adj_int:$buffer_ttl_adj_int"; + ### Catch negative integer seconds, set minimum of bufferTTL/10 seconds + if [[ "$buffer_ttl_adj_int" -le "$((bufferTTL/10))" ]]; then + buffer_ttl_adj_int="$((bufferTTL/10))"; + yell "WARNING:Buffer lag adjustment yielded negative seconds."; + fi; + ## Calculate nanosecond remainder + ### Remove integer + buffer_ttl_adj_floatfrac="$((buffer_ttl_adj_ns - (buffer_ttl_adj_int*(10**9)) ))" && vbm "buffer_ttl_adj_floatfrac:$buffer_ttl_adj_floatfrac"; + ### Calc absolute value of fraction (by removing '-' if present; see https://stackoverflow.com/a/47240327 + buffer_ttl_adj_floatfrac="${buffer_ttl_adj_floatfrac#-}" && vbm "buffer_ttl_adj_floatfrac:$buffer_ttl_adj_floatfrac"; + ## Form float bufferTTL_AdjFloat (function output) + bufferTTL_AdjFloat="$buffer_ttl_adj_int"."$buffer_ttl_adj_floatfrac" && vbm "bufferTTL_AdjFloat:$bufferTTL_AdjFloat"; + vbm "STATUS:Calculated adjusted bufferTTL (seconds):$bufferTTL_AdjFloat"; +} # Calc bufferTTL_AdjFloat so buffer starts every bufferTTL seconds +magicWriteVersion() { + # Desc: Appends time-stamped VERSION to pathout_tar + # Usage: magicWriteVersion + # Input: vars: pathout_tar, dir_tmp + # Input: array: recPubKeysValid + # Input: scriptVersion, scriptURL, ageVersion, ageURL, scriptHostname + # Output: appends tar (pathout_tar) + # Depends: dateTimeShort, appendArgTar + local fileoutVersion contentVersion pubKeyIndex + + # Set VERSION file name + fileoutVersion="$(dateTimeShort)..VERSION"; + + # Gather VERSION data in contentVersion + contentVersion="scriptVersion=$scriptVersion"; + #contentVersion="$contentVersion""\\n"; + contentVersion="$contentVersion""\\n""scriptName=$scriptName"; + contentVersion="$contentVersion""\\n""scriptURL=$scriptURL"; + contentVersion="$contentVersion""\\n""ageVersion=$ageVersion"; + contentVersion="$contentVersion""\\n""ageURL=$ageURL"; + contentVersion="$contentVersion""\\n""date=$(date --iso-8601=seconds)"; + contentVersion="$contentVersion""\\n""hostname=$scriptHostname"; + ## Add list of recipient pubkeys + for pubkey in "${recPubKeysValid[@]}"; do + ((pubKeyIndex++)) + contentVersion="$contentVersion""\\n""PUBKEY_$pubKeyIndex=$pubkey"; + done + ## Process newline escapes + contentVersion="$(echo -e "$contentVersion")" + + # Write contentVersion as file fileoutVersion and write-append to pathout_tar + appendArgTar "$contentVersion" "$fileoutVersion" "$pathout_tar" "$dir_tmp"; +} # bkgpslog: write version data to pathout_tar via appendArgTar() +magicGatherWriteBuffer() { + # Desc: bkgpslog-specific meta function for writing data to dir_tmp then appending each file to pathout_tar + # Inputs: vars: pathout_tar, cmd_conv_{nmea,gpx,kml}, cmd_{compress,encrypt} dir_tmp, + # Inputs: vars: bufferTTL bufferTTL_STR scriptHostname cmd_compress_suffix cmd_encrypt_suffix + # Output: file: (pathout_tar) + # Depends: tar 1, date 8, sleep 8, yell(), try(), vbm(), appendArgTar(), checkMakeTar() + # Depends: magicWriteVersion(), appendFileTar() + local fn pathoutBuffer timeBufferStartLong timeBufferStart fileoutBasename + local fileout_nmea fileout_gpx fileout_kml pathout_nmea pathout_gpx pathout_kml pathout_tar + + # Debug:Get function name + fn="${FUNCNAME[0]}"; + + vbm "DEBUG:STATUS:$fn:Started magicGatherWriteBuffer()."; + + # Create buffer file with unique name + pathoutBuffer="$dir_tmp/buffer$SECONDS" && vbm "pathoutBuffer:$pathoutBuffer"; + # Fill buffer + timeout "$bufferTTL"s gpspipe -r -o "$pathoutBuffer" ; + timeBufferStartLong="$(date --date="$bufferTTL seconds ago" --iso-8601=seconds)" && vbm "timeBufferStartLong:$timeBufferStartLong"; + timeBufferStart="$(dateTimeShort "$timeBufferStartLong" )" && vbm "timeBufferStart:$timeBufferStart"; # Note start time + # Determine file paths (time is start of buffer period) + fileoutBasename="$timeBufferStart""--""$bufferTTL_STR""..""$scriptHostname""_location" && vbm "STATUS:Set fileoutBasename to:$fileoutBasename"; + ## Files saved to dir_tmp + fileout_nmea="$fileoutBasename".nmea"$cmd_compress_suffix""$cmd_encrypt_suffix" && vbm "STATUS:Set fileout_nmea to:$fileout_nmea"; + fileout_gpx="$fileoutBasename".gpx"$cmd_compress_suffix""$cmd_encrypt_suffix" && vbm "STATUS:Set fileout_gpx to:$fileout_gpx"; + fileout_kml="$fileoutBasename".kml"$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:$pathout_kml"; + ## Files saved to disk (dirOut) + ### one file per day (Ex: "20200731..hostname_location.[.gpx.gz].tar") + pathout_tar="$dirOut"/"$(dateShort "$(date --date="$bufferTTL seconds ago" --iso-8601=seconds)")".."$scriptHostname""_location""$cmd_compress_suffix""$cmd_encrypt_suffix".tar && \ + vbm "STATUS:Set pathout_tar to:$pathout_tar"; + # DEBUG: check vars + vbm "STATUS:fn :$fn"; + 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 :$pathout_kml"; + vbm "STATUS:bufferTTL :$bufferTTL"; + vbm "STATUS:pathoutBuffer :$pathoutBuffer"; + vbm "STATUS:timeBufferStart:$timeBufferStart"; + vbm "fileoutBasename :$fileoutBasename"; + + # Validate pathout_tar as tar. + checkMakeTar "$pathout_tar"; + ## Add VERSION file if checkMakeTar had to create a tar (exited 1) or replace one (exited 2) + vbm "exit status before magicWriteVersion:$?" + if [[ $? -eq 1 ]] || [[ $? -eq 2 ]]; then magicWriteVersion; fi + + # Write bufferBash to pathout_tar + wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html ) + appendFileTar "$pathoutBuffer" "$fileout_nmea" "$pathout_tar" "$dir_tmp" "$cmd_conv_nmea" "$cmd_compress" "$cmd_encrypt"; # Write NMEA data + appendFileTar "$pathoutBuffer" "$fileout_gpx" "$pathout_tar" "$dir_tmp" "$cmd_conv_gpx" "$cmd_compress" "$cmd_encrypt"; # Write GPX file + appendFileTar "$pathoutBuffer" "$fileout_kml" "$pathout_tar" "$dir_tmp" "$cmd_conv_kml" "$cmd_compress" "$cmd_encrypt"; # Write KML file + + # Remove secured chunks from dir_tmp + rm "$pathoutBuffer" "$pathout_nmea" "$pathout_gpx" "$pathout_kml"; + vbm "DEBUG:STATUS:$fn:Finished magicGatherWriteBuffer()."; +} # write buffer to disk +magicParseRecipientDir() { + # Desc: Updates recPubKeysValid with pubkeys in dir specified by '-R' option ("recipient directory") + # Inputs: vars: optionRecDir, argRecDir, optionEncrypt + # arry: recPubKeysValid + # Outputs: arry: recPubKeysValid + # Depends: processArguments, + local recipientDir recFileLine updateRecipients + declare -a candRecPubKeysValid + + # Check that '-e' and '-R' set + if [[ "$optionEncrypt" = "true" ]] && [[ "$optionRecDir" = "true" ]]; then + ### Check that argRecDir is a directory. + if [[ -d "$argRecDir" ]]; then + recipientDir="$argRecDir" && vbm "STATUS:Recipient watch directory detected:\"$recipientDir\""; + #### Initialize variable indicating outcome of pubkey review + unset updateRecipients + #### Add existing recipients + candRecPubKeysValid=("${recPubKeysValidStatic[@]}"); + #### Parse files in recipientDir + for file in "$recipientDir"/*; do + ##### Read first line of each file + recFileLine="$(head -n1 "$file")" && vbm "STATUS:Checking if pubkey:\"$recFileLine\""; + ##### check if first line is a valid pubkey + if checkAgePubkey "$recFileLine" && \ + ( validateInput "$recFileLine" "ssh_pubkey" || validateInput "$recFileLine" "age_pubkey"); then + ###### T: add candidate pubkey to candRecPubKeysValid + candRecPubKeysValid+=("$recFileLine") && vbm "STATUS:RecDir pubkey is valid pubkey:\"$recFileLine\""; + else + ###### F: throw warning; + yell "ERROR:Invalid recipient file detected. Not modifying recipient list." + updateRecipients="false"; + fi; + done + #### Write updated recPubKeysValid array to recPubKeysValid if no failure detected + if ! [[ "$updateRecipients" = "false" ]]; then + recPubKeysValid=("${candRecPubKeysValid[@]}") && vbm "STATUS:Wrote candRecPubkeysValid to recPubKeysValid:\"${recPubKeysValid[*]}\""; + fi; + else + yell "ERROR:$0:Recipient directory $argRecDir does not exist. Exiting."; exit 1; + fi; + fi; + # Handle case if '-R' set but '-e' not set + if [[ ! "$optionEncrypt" = "true" ]] && [[ "$optionRecDir" = "true" ]]; then + yell "ERROR: \\'-R\\' is set but \\'-e\\' is not set."; fi; +} # Update recPubKeysValid with argRecDir +magicParseRecipientArgs() { + # Desc: Parses recipient arguments specified by '-r' option + # Input: vars: optionEncrypt, optionRecipients + # arry: argRecPubKeys from processArguments() + # Output: vars: cmd_encrypt, cmd_encrypt_suffix + # arry: recPubKeysValid, recPubKeysValidStatic + # Depends: checkapp(), checkAgePubkey(), validateInput(), processArguments() + local recipients + + # Check if encryption option active. + if [[ "$optionEncrypt" = "true" ]] && [[ "$optionRecipients" = "true" ]]; then + if checkapp age; then # Check that age is available. + for pubkey in "${argRecPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message + vbm "DEBUG:Testing pubkey string:$pubkey"; + if checkAgePubkey "$pubkey" && \ + ( validateInput "$pubkey" "ssh_pubkey" || validateInput "$pubkey" "age_pubkey"); 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 ""$?"". Invalid recipient pubkey string. Exiting."; exit 1; + fi; + done + vbm "DEBUG:Finished processing argRecPubKeys array"; + vbm "STATUS:Array of validated pubkeys:${recPubKeysValid[*]}"; + recPubKeysValidStatic=("${recPubKeysValid[@]}"); # Save static image of pubkeys validated by this function + + ## Form age command string + cmd_encrypt="age ""$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 " && vbm "cmd_encrypt:$cmd_encrypt"; + cmd_encrypt_suffix="" && vbm "cmd_encrypt_suffix:$cmd_encrypt_suffix"; + vbm "DEBUG:Encryption not enabled." + fi; + # Catch case if '-e' is set but '-r' or '-R' is not + if [[ "$optionEncrypt" = "true" ]] && [[ ! "$optionRecipients" = "true" ]]; then + yell "ERROR:\\'-e\\' set but no \\'-r\\' or \\'-R\\' set."; exit 1; fi; + # Catch case if '-r' or '-R' set but '-e' is not + if [[ ! "$optionEncrypt" = "true" ]] && [[ "$optionRecipients" = "true" ]]; then + yell "ERROR:\\'-r\\' or \\'-R\\' set but \\'-e\\' is not set."; exit 1; fi; +} # Populate recPubKeysValid with argRecPubKeys; form encryption cmd string and filename suffix +magicParseCompressionArg() { + # Desc: Parses compression arguments specified by '-c' option + # Input: vars: optionCompress + # Output: cmd_compress, cmd_compress_suffix + # Depends: checkapp(), vbm(), gzip, + if [[ "$optionCompress" = "true" ]]; then # Check if compression option active + if checkapp gzip; then # Check if gzip available + cmd_compress="gzip " && vbm "cmd_compress:$cmd_compress"; + cmd_compress_suffix=".gz" && vbm "cmd_compress_suffix:$cmd_compress_suffix"; + else + yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1; + fi + else + cmd_compress="tee /dev/null " && vbm "cmd_compress:$cmd_compress"; + cmd_compress_suffix="" && vbm "cmd_compress_suffix:$cmd_compress_suffix"; + vbm "DEBUG:Compression not enabled."; + fi +} # Form compression cmd string and filename suffix +magicInitWorkingDir() { + # Desc: Determine temporary working directory from defaults or user input + # Usage: magicInitWorkingDir + # Input: vars: optionTmpDir, argTempDirPriority, dirTmpDefault + # Input: vars: scriptTimeStart + # Output: vars: dir_tmp + # Depends: processArguments(), vbm(), yell() + # Parse '-t' option (user-specified temporary working dir) + ## Set dir_tmp_parent to user-specified value if specified + local dir_tmp_parent + + if [[ "$optionTmpDir" = "true" ]]; then + if [[ -d "$argTempDirPriority" ]]; then + dir_tmp_parent="$argTempDirPriority"; + else + yell "WARNING:Specified temporary working directory not valid:$argTempDirPriority"; + exit 1; # Exit since user requires a specific temp dir and it is not available. + fi; + else + ## Set dir_tmp_parent to default or fallback otherwise + if [[ -d "$dirTmpDefault" ]]; then + dir_tmp_parent="$dirTmpDefault"; + elif [[ -d /tmp ]]; then + yell "WARNING:$dirTmpDefault not available. Falling back to /tmp ."; + dir_tmp_parent="/tmp"; + else + yell "ERROR:No valid working directory available. Exiting."; + exit 1; + fi + fi; + ## Set dir_tmp using dir_tmp_parent and nonce (scriptTimeStart) + dir_tmp="$dir_tmp_parent"/"$scriptTimeStart""..bkgpslog" && vbm "DEBUG:Set dir_tmp to:$dir_tmp"; # Note: removed at end of main(). +} # Sets working dir +magicParseCustomTTL() { + # Desc: Set user-specified TTLs for buffer and script + # Input: vars: argCustomBufferTTL (integer), argCustomScriptTTL_TE (string) + # Input: vars: optionCustomBufferTTL, optionCustomScriptTTL_TE + # Input: vars: bufferTTL (integer), scriptTTL_TE (string) + # Output: bufferTTL (integer), scriptTTL_TE (string) + # Depends validateInput(), showUsage(), yell + + # React to '-b, --buffer-ttl' option + if [[ "$optionCustomBufferTTL" = "true" ]]; then + ## T: Check if argCustomBufferTTL is an integer + if validateInput "$argCustomBufferTTL" "integer"; then + ### T: argCustomBufferTTL is an integer + bufferTTL="$argCustomBufferTTL" && vbm "Custom bufferTTL from -b:$bufferTTL"; + else + ### F: argcustomBufferTTL is not an integer + yell "ERROR:Invalid integer argument for custom buffer time-to-live."; showUsage; exit 1; + fi; + ## F: do not change bufferTTL + fi; + + # React to '-B, --script-ttl' option + if [[ "$optionCustomScriptTTL_TE" = "true" ]]; then + ## T: Check if argCustomScriptTTL is a time element (ex: "day", "hour") + if validateInput "$argCustomScriptTTL" "time_element"; then + ### T: argCustomScriptTTL is a time element + scriptTTL_TE="$argCustomScriptTTL" && vbm "Custom scriptTTL_TE from -B:$scriptTTL_TE"; + else + ### F: argcustomScriptTTL is not a time element + yell "ERROR:Invalid time element argument for custom script time-to-live."; showUsage; exit 1; + fi; + ## F: do not change scriptTTL_TE + fi; +} # Sets custom script or buffer TTL if specified + + +main() { + # DEBUG: Print environment variables + vbm "echo $(printenv)"; + # Process arguments + processArguments "$@"; + ## Act upon arguments + ### Determine working directory + magicInitWorkingDir; # Sets dir_tmp from argTempDirPriority + ### Set output encryption and compression option strings + #### React to "-r" ("encryption recipients") option + magicParseRecipientArgs; # Updates recPubKeysValid, cmd_encrypt[_suffix] from argRecPubKeys + #### React to "-c" ("compression") option + magicParseCompressionArg; # Updates cmd_compress[_suffix] + #### React to "-R" ("recipient directory") option + magicParseRecipientDir; # Updates recPubKeysValid + #### React to custom buffer and script TTL options ("-b", "-B") + magicParseCustomTTL; # Sets custom scriptTTL_TE and/or bufferTTL if specified + + # Check that critical apps and dirs are available, display missing ones. + if ! checkapp gpspipe tar && ! checkdir "$dirOut" "dir_tmp"; then + yell "ERROR:Critical components missing."; + displayMissing; yell "Exiting."; exit 1; fi + + # Set script lifespan (scriptTTL from scriptTTL_TE) + magicSetScriptTTL "$scriptTTL_TE"; + ## Note: scriptTTL_TE is time element string (ex: "day") while scriptTTL is integer seconds + + # File name substring (ISO-8601 duration from bufferTTL) + bufferTTL_STR="$(timeDuration "$bufferTTL")" && vbm "DEBUG:bufferTTL_STR:$bufferTTL_STR"; + + # Init temp working dir + try mkdir "$dir_tmp" && vbm "DEBUG:Working dir created at dir_tmp:$dir_tmp"; + + # Initialize 'tar' archive + ## Define output tar path (note: each day gets *one* tar file (Ex: "20200731..hostname_location.[.gpx.gz].tar")) + pathout_tar="$dirOut"/"$(dateShort "$(date --date="$bufferTTL seconds ago" --iso-8601=seconds)")".."$scriptHostname""_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:$pathout_tar"; + ## Append VERSION file to pathout_tar + magicWriteVersion; + + # Define GPS conversion commands + cmd_conv_nmea="tee /dev/null " && vbm "STATUS:Set cmd_conv_nmea to:$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 + timeBufferFirstNS="$(timeEpochNS)"; bufferRound=0; bufferTTL_AdjFloat="$bufferTTL"; + while [[ "$SECONDS" -lt "$scriptTTL" ]]; do + if ! [[ -d "$dir_tmp" ]]; then yell "ERROR:dir_tmp existence failure:$dir_tmp"; try mkdir "$dir_tmp" && vbm "DEBUG:Working dir recreated dir_tmp:$dir_tmp"; fi + magicParseRecipientDir; + magicGatherWriteBuffer & + sleep "$bufferTTL_AdjFloat"; # adjusted by magicBufferSleepPID + ((bufferRound++)); + magicBufferSleepPID; # Calculates bufferTTL_AdjFloat from bufferTTL given buffer expected start time vs. actual + done + + # Cleanup + ## Remove dir_tmp + try rm -r "$dir_tmp" && vbm "Removed dir_tmp:$dir_tmp"; + + vbm "STATUS:Main function finished."; } # Main function. #===END Declare local script functions=== #==END Define script parameters== @@ -373,6 +1359,5 @@ main "$@" # Run main function. exit 0; #==END Perform work and exit== - - - #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ; +# Author: Steven Baltakatei Sandoval; +# License: GPLv3+