From: Steven Baltakatei Sandoval Date: Mon, 25 Jan 2021 00:06:00 +0000 (+0000) Subject: remove(exec/bkgpslog):Remove unused location logging script X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02.git/commitdiff_plain/7103c8b0857a3538a014dacfd0d99c209890dad8?hp=-c remove(exec/bkgpslog):Remove unused location logging script `bkgpslog` has been superceded by `gpspipe | bklog`. --- 7103c8b0857a3538a014dacfd0d99c209890dad8 diff --git a/exec/bkgpslog b/exec/bkgpslog deleted file mode 100755 index d8eeff7..0000000 --- a/exec/bkgpslog +++ /dev/null @@ -1,1363 +0,0 @@ -#!/bin/bash -# Desc: Records gps data - -#==BEGIN Define script parameters== -## 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 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 $*"; } #o -checkapp() { - # Desc: If arg is a command, save result in assoc array 'appRollCall' - # Usage: checkapp arg1 arg2 arg3 ... - # Input: global assoc. array 'appRollCall' - # Output: adds/updates key(value) to global assoc array 'appRollCall' - local returnState - #echo "DEBUG:$(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 $arg"; - return 1; - fi -} # Check that dir exists -echoerr() { - echo "$@" 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 " --version" - echoerr " Display script version." - echoerr " -v, --verbose" - echoerr " Display debugging info." - echoerr " -e, --encrypt" - echoerr " Encrypt output." - 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 " -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 -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 "$scriptVersion" -} # Display script version. -vbm() { - # Description: Prints verbose message ("vbm") to stderr if optionVerbose is set to "true". - # Usage: vbm "DEBUG:verbose message here" - # Version 0.1.1 - # Input: arg1: string - # vars: optionVerbose - # Output: stderr - # Depends: echo 8, date 8 - - if [ "$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. -} # 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." - #echoerr "DEBUG:Provided arguments are:""$*" - case "$1" in - -h | --help) showUsage; exit 1;; # Display usage. - --version) showVersion; exit 1;; # Show version - -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="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi - # Depends: date 8, echo 8, yell, try - - local returnState timeCurrent timeNextDay secondsUntilNextDay returnState - timeCurrent="$(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 [[ "$secondsUntilNextDay" -gt 0 ]]; then - returnState="true"; - elif [[ "$secondsUntilNextDay" -eq 0 ]]; then - returnState="warning_zero"; - yell "WARNING:Reported time until next day exactly zero."; - elif [[ "$secondsUntilNextDay" -lt 0 ]]; then - returnState="warning_negative"; - yell "WARNING:Reported time until next day is negative."; - fi - - try echo "$secondsUntilNextDay"; # Report - - # Determine function return code - if [[ "$returnState" = "true" ]]; then - return 0; - elif [[ "$returnState" = "warning_zero" ]]; then - return 1; - elif [[ "$returnState" = "warning_negative" ]]; then - return 2; - fi -} # Report seconds until next day -timeUntilNextHour(){ - # Desc: Report seconds until next hour - # Version 1.0.1 - # Output: stdout: integer seconds until next hour - # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 - # Usage: timeUntilNextHour - # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi - - local returnState 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 [[ "$secondsUntilNextHour" -gt 0 ]]; then - returnState="true"; - elif [[ "$secondsUntilNextHour" -eq 0 ]]; then - returnState="warning_zero"; - yell "WARNING:Reported time until next hour exactly zero."; - elif [[ "$secondsUntilNextHour" -lt 0 ]]; then - returnState="warning_negative"; - yell "WARNING:Reported time until next hour is negative."; - fi; - - try echo "$secondsUntilNextHour"; # 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 ([str date]) - # Version 1.1.1 - # Input: arg1: 'date'-parsable timestamp string (optional) - # Output: stdout: timestamp (ISO-8601, no separators) - # 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 - ### 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 - ## 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 - - # 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 - # 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 - ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout. - else - yell "ERROR: timeUntilNextHour exit code $?"; exit 1; - fi; - fi; - else - yell "ERROR:Invalid argument for setScriptTTL function:$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:$dir_tmp"; - - vbm "STATUS:Main function finished."; -} # Main function. -#===END Declare local script functions=== -#==END Define script parameters== - - -#==BEGIN Perform work and exit== -main "$@" # Run main function. -exit 0; -#==END Perform work and exit== - -# Author: Steven Baltakatei Sandoval; -# License: GPLv3+ diff --git a/exec/bkgpslog-plan.org b/exec/bkgpslog-plan.org deleted file mode 100644 index cc5c839..0000000 --- a/exec/bkgpslog-plan.org +++ /dev/null @@ -1,302 +0,0 @@ -2020-07-12T21:16Z; bktei> Note: This file is now retired since ~bklog~ -has replaced ~bkgpslog~. - -* bkgpslog task list -** DONE Add job control for short buffer length - CLOSED: [2020-07-02 Thu 16:04] -2020-07-02T14:56Z; bktei> File write operations were bundled into a -magicWriteBuffer function that is called then detached from the script -shell (job control), but the detached job is not tracked by the main -script. A problem may arise if two instances of magicWriteBuffer -attempt to write to the same tar simultaneously. Two instances of -magicWriteBuffer may exist if the buffer length is low (ex: 1 second); -the default buffer length of 60 seconds should reduce the probability -of a collision but it should be possible for the main script to track -the process ID of a magicWriteBuffer() as soon as it detaches and then -checking (via ~$!~ as described [[https://bashitout.com/2013/05/18/Ampersands-on-the-command-line.html][here]]) that the process is still alive. -2020-07-02T15:23Z; bktei> I found that the Bash ~wait~ built-in can be -used to delay processing until a specified job completes. The ~wait~ -command will pause script execution until all backgrounded processes -complete. -2020-07-02T16:03Z; bktei> Added ~wait~. -** DONE Rewrite tar initialization function - CLOSED: [2020-07-02 Thu 17:23] -2020-07-02T17:23Z; bktei> Simplify tar initialization function so -VERSION file is used to test appendability of tar as well as to mark -when a new session is started. -** DONE Consolidate tar checking/creation into function - CLOSED: [2020-07-02 Thu 18:33] -2020-07-02T18:33Z; bktei> Simplify how the output tar file's existence -is checked and its status as a valid tar file is validated. This was -done using a new function ~checkMakeTar~. -** DONE Add VERSION if output tar deleted between writes - - CLOSED: [2020-07-02 Thu 20:22] -2020-07-02T20:21Z; bktei> Added bkgpslog-specified function -magicWriteVersion() to be called whenever a new time-stamped ~VERSION~ -file needs to be generated and appended to the output tar file -~PATHOUT_TAR~. -** DONE Rewrite buffer loop to reduce lag between gpspipe runs - - CLOSED: [2020-07-03 Fri 20:57] -2020-07-03T17:10Z; bktei> As is, there is still a 5-6 second lag -between when ~gpspipe~ times out at the end of a buffer round and when -~gpspipe~ is called by the subsequent buffer round. I believe this can -be reduced by moving variable manipulations inside the -asynchronously-executed magicWriteBuffer() function. Ideally, the -while loop should look like: - -#+BEGIN_EXAMPLE -while( $SECONDS < $SCRIPT_TTL); do - gpspipe-r > "$DIR_TMP"/buffer.nmea - writeBuffer & -done -#+END_EXAMPLE -2020-07-03T20:56Z; bktei> I simplified it futher to something like -this: -#+BEGIN_EXAMPLE -while( $SECONDS < $SCRIPT_TTL); do - writeBuffer & - sleep $SCRIPT_TTL -done -#+END_EXAMPLE - -Raspberry Pi Zero W shows approximately 71ms of drift per buffer round -with 10s buffer. -** DONE Feature: Recipient watch folder - CLOSED: [2020-07-12 Sun 21:08] -2020-07-03T21:28Z; bktei> This feature would be to scan the contents -of a specified directory at the start of every buffer round in order -to determine encryption (age) recipients. This would allow a device to -dynamically encrypt location data in response to automated changes -made by other tools. For example, if such a directory were -synchronized via Syncthing and changes to such a directory were -managed by a trusted remote server, then that server could respond to -human requests to secure location data. - -Two specific privacy subfeatures come to mind: - -1. Parallel encryption: Given a set of ~n~ public keys, encrypt data - with a single ~age~ command with options causing all ~n~ pubkeys to - be recipients. In order to decrypt the data, any individual private - key could be used. No coordination between key owners would be - required to decrypt. - -2. Sequential encryption: Given a set of ~n~ public keys, encrypt data - with ~n~ sequential ~age~ commands all piped in series with each - ~age~ command utilizing only one of the ~n~ public keys. In order - to decrypt the data, all ~n~ private keys would be required to - decrypt the data. Since coordination is required, it is less - convenient than parallel encryption. - -In either case, a directory would be useful for holding configuration -files specifying how to execute which or combination of which features -at the start of every buffer round. - -I don't yet know how to program the rules, although I think it'd be -easier to simply add an option providing ~bkgpslog~ with a directory -to watch. When examining the directory, check for a file with the -appropriate file extension (ex: .pubkey) and then read the first line -into the script's pubKey array. - -2020-07-12T21:08Z; bktei> ~-R~ watch directory option added in ~bkgpslog~ ver -~0.4.0~. - -** DONE Feature: Simplify option to reduce output size - CLOSED: [2020-07-12 Sun 21:15] - -~gpsbabel~ [[https://www.gpsbabel.org/htmldoc-development/filter_simplify.html][features]] a ~simplify~ option to trim data points from GPS -data. There are several methods for prioritizing which points to keep -and which to trim, although the following seems useful given some -sample data I've recorded in a test run of ninfacyzga-01: - -#+BEGIN_EXAMPLE -gpsbabel -i nmea -f all.nmea -x simplify,error=10,relative -o gpx \ --F all-simp-rel-10.gpx -#+END_EXAMPLE - -An error level of "10" with the "relative" option seems to retain all -desireable features for GPS data while reducing the number of points -along straightaways. File size is reduced by a factor of -about 11. Noise from local stay-in-place drift isn't removed; a -relative error of about 1000 is required to remove stay-in-place drift -noise but this also trims all but 100m-size features of the recorded -path. A relative error of 1000 reduces file size by a factor of -about 450. - -#+BEGIN_EXAMPLE - 67M relerror-0.001.kml - 66M relerror-0.01.kml - 58M relerror-0.1.kml - 21M relerror-1.kml -5.8M relerror-10.kml -797K relerror-100.kml -152K relerror-1000.kml -#+END_EXAMPLE - -2020-07-12T21:13Z; bktei> Instead of programming data simplification -in ~bkgpslog~, the data simplification step should be performed via -~bklog~'s ~-p~ option which specifies a processing command string to -be ~eval~'d before data is compressed, encrypted, and written to -disk. In other words, handling the simplification of data beyond -allowing for a general command string specified by ~-p~ is outside the -scope of ~bkgpslog~ or its successor ~bklog~. - -** DONE Feature: Generalize bkgpslog to bklog function - CLOSED: [2020-07-12 Sun 21:11] -2020-07-05T02:42Z; bktei> Transform ~bkgpslog~ into a modular -component called ~bklog~ such that it processes a stdout stream of any -external command, not just ~gpspipe -r~. This would permit reuse of -the ~bkgpslog~ code for logging not just GPS data but things like -pressure, temperature, system statistics, etc. -2020-07-05T16:35Z; bktei> -: bklog -r age1asdf -o log.tar # encrypt/compress stdin to log.tar -: bklog -x -f log.tar -i age.key -O /tmp # extract and decrypt - -Making ~bklog~ follow the [[https://en.wikipedia.org/wiki/Unix_philosophy][Unix philosophy]] means that it shouldn't care -what kind of text is fed to it. - -*** ~bklog~ Design vs. Unix Philosophy -**** Pubkey dir watching -The feature of periodically checking a directory for changes in the -pubkeys it contains should be justified by its usefulness; if the -complexity cannot be justified then the feature should be removed. -**** Defaults vs options -Many options can cause the tool to become complex in unjustifiable -ways. Currently I am adding options because I want the ability to -modify the script's behavior without having to modify the source code -on the machine in which the code is running. I should consider -removing features at some point and having the program force defaults -on the user. For example, allowing the specification of a temporary -directory, while useful for me, is probably not useful for most people -who don't know or care about the difference between ~/tmp~ and -~/dev/shm~. -**** Script time to live (TTL) -I initially implemented a script time-to-live feature because I was -unsure in my ability to program script that could run for long periods -of time without causing a runaway usage of memory. I still think it's -a good idea to offer a script TTL option to the user but I think the -default should be to simply run forver. - -2020-07-12T21:11Z; bktei> ~bklog~ script created and tested as of -commit ~aedd19f~. - -** DONE TODO: Evaluate ~rsyslog~ as stand-in for this work - CLOSED: [2020-07-12 Sun 21:09] -2020-07-05T02:57Z; bktei> I searched for "debian iot logging" ("iot" -as in "Internet of Things", the current buzzword for small low-power -computers being used to provide microservices for owners in their own -home) and came across several search results mentioning ~syslog~ and -~rsyslog~. - -https://www.thissmarthouse.net/consolidating-iot-logs-into-mysql-using-rsyslog/ -https://rsyslog.readthedocs.io/en/latest/tutorials/tls.html -https://serverfault.com/questions/20840/how-would-you-send-syslog-securely-over-the-public-internet -https://www.rsyslog.com/ - -My impression is that ~rsyslog~ is a complex software package designed -to offer many features, some of which possibly might satisfy my -needs. - -However, as stated in the repository README, the objective of the -~ninfacyzga-01~ project is "Observing facts of the new". This means -that the goal is not only to record location data but any data that -can be captured by a sensor. This means the capture of the following -environmental phenomena are within the scope of this device: - -*** Sounds (microphone) -*** Light (camera) -*** Temperature (thermocouple) -*** Air Pressure (barometer) -*** Acceleration Vector (acceleromter / gyroscope) -*** Magnetic Field Vector (magnetometer) - -This brings up the issue of respecting privacy of others in shared -spaces through which ~ninfacyzga-01~ may pass through. ~ninfacyzga-01~ -should encrypt data it records according to rules set by its -owner. - -One permissive rule could be that if ~ninfacyzga-01~ detects that a -person (let's call her Alice) enters a room, it should add Alice's -encryption public key to the list of recipients against which it -encrypts data without Alice having to know how ~ninfacyzga-01~ is -programmed (she might have a ~calkuptcana~ agent on her person that -broadcasts her privacy preferences). Meanwhile, ~ninfacyzga-01~ may -publish its observations to a repository that Alice and other members -of the shared communal space have access to (ex: a read-only shared -directory on a local network WiFi). Alice could download all the files -in the shared repository but she would only be able to decrypt files -generated when she was physically near enough to ~ninfacyzga-01~ for -it to detect that her presence was within some spatial boundary. - -A more restrictive rule could resemble the permissive rule in that -~ninfacyzga-01~ uses Alice's encryption public key only when she is -physically near by, except that it encrypts logged files against -public keys in a sequential manner. This would mean that all people -who were near ~ninfacyzga-01~ would have to pass around each log file -to eachother so that they could decrypt the content. - -That said, according to [[https://www.rsyslog.com/doc/master/tutorials/database.html][this ~rsyslog~ page]], ~rsyslog~ is more a data -wrangling system for collecting data from disparate sources of -different types and outputting data to text files on disk than a -system committed to the server-client model of database storage. So, I -think converting ~bkgpslog~ into a ~bklog~ script that appends -encrypted and compressed data to a tar file for later extraction -(possibly the same script with future features) would be best. - -2020-07-12T21:10Z; bktei> rsyslog is outside the scope of what -~bkgpslog~ does (record location observations). A different tool -should be used to retrieve and synchronize data. The dumb storage -method of "tar files in a syncthing folder" works for now. -** TODO: Place persistent recip. updates in asynchronous coproc -2020-07-06T19:37Z; bktei> In order to update the recipient list, the -magicParseRecipientDir() function needs to be run each buffer period -in order to scan for changes in the recipient list. However, such a -scan takes time; if the magicGatherWriteBuffer() function must pause -until magicParseRecipientDir() completes, then a significant pause -between buffer sessions may occur, causing detectable gaps in location -data between buffer rounds. - -I looked for ways in which I might start magicParseRecipientDir() -asynchronously immediately before running the data collection command -and then collect its output at the start of the next buffer round. One -way using the ~coproc~ Bash built-in is described [[https://stackoverflow.com/a/20018504/10850071][here]]. I'd have to -make the asynchronous function output the recipient list to stdout -which would then be ~read~ into the ~recPubKeysValid~ array in the -main loop. However, for now, I'm putting the magicParseRecipientDir() -as-is in the main loop and accepting the delay for now. -* bkgpslog narrative -** Initialize environment -*** Init variables -**** Save timeStart (YYYYmmddTHHMMSS±zz) -*** Define Functions -**** Define Debugging functions -**** Define Argument Processing function -**** Define Main function -** Run Main Function -*** Process Arguments -*** Set output encryption and compression option strings -*** Check that critical apps and dirs are available, displag missing ones. -*** Set lifespans of script and buffer -*** Init temp working dir ~DIR_TMP~ -Make temporary dir in tmpfs dir: ~/dev/shm/$(nonce)..bkgpslog/~ (~DIR_TMP~) -*** Initialize ~tar~ archive -**** Write ~bkgpslog~ version to ~$DIR_TMP/VERSION~ -**** Create empty ~tar~ archive in ~DIR_OUT~ at ~PATHOUT_TAR~ - -Set output file name to: -: PATHOUT_TAR="$DIR_OUT/YYYYmmdd..hostname_location.gz.age.tar" -Usage: ~iso8601Period $timeStart $timeEnd~ - -**** Append ~VERSION~ file to ~PATHOUT_TAR~ - -Append ~$DIR_TMP/VERSION~ to ~PATHOUT_TAR~ via ~tar --append~ - -*** Read/Write Loop (Record gps data until script lifespan ends) -**** Determine output file paths -**** Define GPS conversion commands -**** Fill Bash variable buffer from ~gpspipe~ -**** Process bufferBash, save secured chunk set to ~DIR_TMP~ -**** Append each secured chunk to ~PATHOUT_TAR~ -: tar --append --directory=DIR_TMP --file=PATHOUT_TAR $(basename PATHOUT_{NMEA,GPX,KML} ) -**** Remove secured chunk from ~DIR_TMP~