#!/bin/bash
# Desc: Compresses, encrypts, and writes stdin every 5 seconds
+#==BEGIN Define script parameters==
+#===BEGIN Initialize variables===
+
+# Logging Behavior parameters
+bufferTTL="300"; # Time-to-live (seconds) for each buffer round
+scriptTTL_TE="day"; # Time element at the end of which script terminates
+dirTmpDefault="/dev/shm"; # Default parent of working directory
+
+# Script Metadata
+scriptName="bklog"; # Define basename of script file.
+scriptVersion="0.1.12"; # Define version of script.
+scriptURL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script.
+scriptTimeStart="$(date +%Y%m%dT%H%M%S.%N)"; # YYYYmmddTHHMMSS.NNNNNNNNN
+scriptHostname=$(hostname); # Save hostname of system running this script.
+PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case user apps saved there
+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.
+
+# Arrays
+declare -a buffer # array for storing while read buffer
+declare -a argRecPubKeys # array for processArguments function
+declare -a recPubKeysValid # array for storing both '-r' and '-R' recipient pubkeys
+declare -a recPubKeysValidStatic # for storing '-r' recipient pubkeys
+declare -a argProcStrings argProcFileExts # for storing buffer processing strings (ex: "gpsbabel -i nmea -f - -o gpx -F - ")
+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 procStrings procFileExts # Arrays for storing processing commands and resulting output file extensions
+
+# Variables
+optionVerbose=""; optionEncrypt=""; dirOut=""; optionEncrypt=""; dir_tmp="";
+cmd_compress="";cmd_compress_suffix=""; cmd_encrypt=""; cmd_encrypt_suffix="";
+
+#===END Initialize variables===
+
+#===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 $*"; } #o
-declare -a buffer # Initialize buffer array
-scriptTTL="15";
-bufferTTL="5";
-magicWriteBuffer() {
- printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output1.txt;
- printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output2.txt;
- printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output3.txt;
-}
-
-bufferRound=0;
-# Run until script TTL seconds pass
-while [[ $SECONDS -lt "scriptTTL" ]]; do
- bufferTOD="$((SECONDS + $bufferTTL))";
- lineCount=0;
- # Consume stdin to fill buffer until buffer time-of-death (TOD) arrives
- while read -r -t "$bufferTTL" line && [[ $SECONDS -lt "$bufferTOD" ]]; do
- # Append line to buffer array
- buffer+=("$line");
- echo "DEBUG:Processing line:$lineCount";
- echo "DEBUG:Current line :$line";
- echo "DEBUG:buf elem count :${#buffer[@]}";
- ((lineCount++));
- done;
- # Export buffer to asynchronous processing.
- magicWriteBuffer &
- unset buffer; # Clear buffer array for next bufferRound
- # Increment buffer round
- ((bufferRound++));
-done;
-
-# Author: Steven Baltakatei Sandoval
+processArguments() {
+ while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
+ case "$1" in
+ -v | --verbose) optionVerbose="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
+ -h | --help) showUsage; exit 1;; # Display usage.
+ --version) showVersion; exit 1;; # Show version
+ -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_TE="$2"; shift;; # Set custom script TTL (default: "day")
+ -p | --process-string) optionProcString="true" && argProcStrings+=("$2") && argProcFileExts+=("$3") && vbm "STATUS:file extension \"$2\" for output of processing string added:\"$3\""; shift; shift;;
+ -l | --label) optionLabel="true" && argLabel="$2"; vbm "DEBUG:Custom label received:$argLabel"; shift;;
+ -w | --store-raw) optionStoreRaw="true" && argRawFileExt="$2"; vbm "DEBUG:Raw stdin file extension received:$argRawFileExt"; shift;;
+ -W | --no-store-raw) optionNoStoreRaw="true"; vbm "DEBUG:Option selected to not store raw stdin data."; shift;;
+ *) yell "ERROR: Unrecognized argument: $1"; yell "STATUS:All arguments:$*"; exit 1;; # Handle unrecognized options.
+ esac
+ shift
+ done
+} # Argument Processing
+vbm() {
+ # Description: Prints verbose message ("vbm") to stderr if optionVerbose is set to "true".
+ # Usage: vbm "DEBUG:verbose message here"
+ # Version 0.1.2
+ # Input: arg1: string
+ # vars: optionVerbose
+ # Output: stderr
+ # Depends: bash 5.0.3, echo 8.30, date 8.30
+
+ 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
+checkapp() {
+ # Desc: If arg is a command, save result in assoc array 'appRollCall'
+ # Usage: checkapp arg1 arg2 arg3 ...
+ # Version: 0.1.1
+ # Input: global assoc. array 'appRollCall'
+ # Output: adds/updates key(value) to global assoc array 'appRollCall'
+ # Depends: bash 5.0.3
+ local returnState
+
+ #===Process Args===
+ for arg in "$@"; do
+ if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
+ appRollCall[$arg]="true";
+ if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
+ else
+ appRollCall[$arg]="false"; returnState="false";
+ fi;
+ done;
+
+ #===Determine function return code===
+ if [ "$returnState" = "true" ]; then
+ return 0;
+ else
+ 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 ...
+ # Version: 0.1.1
+ # Input: global assoc. array 'fileRollCall'
+ # Output: adds/updates key(value) to global assoc array 'fileRollCall';
+ # Output: returns 0 if app found, 1 otherwise
+ # Depends: bash 5.0.3
+ local returnState
+
+ #===Process Args===
+ for arg in "$@"; do
+ if [ -f "$arg" ]; then
+ fileRollCall["$arg"]="true";
+ if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
+ else
+ fileRollCall["$arg"]="false"; returnState="false";
+ fi;
+ done;
+
+ #===Determine function return code===
+ if [ "$returnState" = "true" ]; then
+ return 0;
+ else
+ 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 ...
+ # Version 0.1.1
+ # Input: global assoc. array 'dirRollCall'
+ # Output: adds/updates key(value) to global assoc array 'dirRollCall';
+ # Output: returns 0 if app found, 1 otherwise
+ # Depends: Bash 5.0.3
+ local returnState
+
+ #===Process Args===
+ for arg in "$@"; do
+ if [ -d "$arg" ]; then
+ dirRollCall["$arg"]="true";
+ if ! [ "$returnState" = "false" ]; then returnState="true"; fi
+ else
+ dirRollCall["$arg"]="false"; returnState="false";
+ fi
+ done
+
+ #===Determine function return code===
+ if [ "$returnState" = "true" ]; then
+ return 0;
+ else
+ return 1;
+ fi
+} # Check that dir exists
+displayMissing() {
+ # Desc: Displays missing apps, files, and dirs
+ # Usage: displayMissing
+ # Version 0.1.1
+ # Input: associative arrays: appRollCall, fileRollCall, dirRollCall
+ # Output: stderr: messages indicating missing apps, file, or dirs
+ # Depends: bash 5, checkAppFileDir()
+ local missingApps value appMissing missingFiles fileMissing
+ local missingDirs dirMissing
+
+ #==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 "$missingApps" 1>&2;
+ fi;
+ unset value;
+ #===END Display Missing Apps===
+
+ #===BEGIN Display Missing Files===
+ missingFiles="Missing files:";
+ #for key in "${!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 "$missingFiles" 1>&2;
+ fi;
+ unset value;
+ #===END Display Missing Files===
+
+ #===BEGIN Display Missing Directories===
+ missingDirs="Missing dirs:";
+ #for key in "${!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;
+ unset value;
+ #===END Display Missing Directories===
+
+ #==END Display errors==
+} # Display missing apps, files, dirs
+
+appendFileTar(){
+ # Desc: Appends [processed] file to tar
+ # Usage: appendFileTar [file path] [name of file to be inserted] [tar path] [temp dir] ([process cmd])
+ # Version: 2.0.1
+ # 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: (optional) command string to process file (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" $HOME/archive.tar /tmp "gpg --decrypt" &
+ # Depends: bash 5.0.3, tar 1.30, cat 8.30, yell()
+ local fn fileName tarPath tmpDir
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+ #yell "DEBUG:STATUS:$fn:Started 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="$5"; else cmd1="cat "; fi # command string
+
+ # Input command string
+ cmd0="cat \"\$1\"";
+
+ # Write to temporary working dir
+ eval "$cmd0 | $cmd1" > "$tmpDir"/"$fileName";
+
+ # Append to tar
+ try tar --append --directory="$tmpDir" --file="$tarPath" "$fileName";
+ #yell "DEBUG:STATUS:$fn:Finished appendFileTar()."
+} # Append [processed] 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
+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
+dateShort(){
+ # Desc: Date without separators (YYYYmmdd)
+ # Usage: dateShort ([str date])
+ # Version: 1.1.2
+ # Input: arg1: 'date'-parsable timestamp string (optional)
+ # Output: stdout: date (ISO-8601, no separators)
+ # Depends: bash 5.0.3, date 8.30, 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
+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
+setTimeZoneEV(){
+ # Desc: Set time zone environment variable TZ
+ # Usage: setTimeZoneEV arg1
+ # Version 0.1.2
+ # 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 8.30, bash 5.0.3
+ # 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
+showUsage() {
+ cat <<'EOF'
+ USAGE:
+ cmd | bklog [ options ]
+
+ OPTIONS:
+ -h, --help
+ Display help information.
+ --version
+ Display script version.
+ -v, --verbose
+ Display debugging info.
+ -e, --encrypt
+ Encrypt output.
+ -r, --recipient [ string pubkey ]
+ Specify recipient. May be age or ssh pubkey.
+ May be specified multiple times for multiple pubkeys.
+ See https://github.com/FiloSottile/age
+ -o, --output [ path dir ]
+ Specify output directory to save logs. This option is required
+ to save log data.
+ -p, --process-string [ filter command ] [ output file extension]
+ Specify how to create and name a processed version of the stdin.
+ For example, if stdin is 'nmea' location data:
+
+ -p "gpsbabel -i nmea -f - -o gpx -F - " ".gpx"
+
+ This option would cause the stdin to 'bklog' to be piped into
+ the 'gpsbabel' command, interpreted as 'nmea' data, converted
+ into 'gpx' format, and then appended to the output tar file
+ as a file with a '.gpx' extension.
+ This option may be specified multiple times in order to output
+ results of multiple different processing methods.
+ -l, --label [ string ]
+ Specify a label to be included in all output file names.
+ Ex: 'location' if stdin is location data.
+ -w, --store-raw [ file extension ]
+ Specify file extension of file within output tar that contains
+ raw stdin data. The default behavior is to always save raw stdin
+ data in a '.stdin' file. Example usage when 'bklog' receives
+ 'nmea' data from 'gpspipe -r':
+
+ -w ".nmea"
+
+ Stdin data is saved in a '.nmea' file within the output tar.
+ -W, --no-store-raw
+ Do not store raw stdin in output tar.
+ -c, --compress
+ Compress output with gzip (before encryption if enabled).
+ -z, --time-zone
+ Specify time zone. (ex: "America/New_York")
+ -t, --temp-dir [path dir]
+ Specify parent directory for temporary working directory.
+ Default: "/dev/shm"
+ -R, --recipient-dir [path dir]
+ Specify directory containing files whose first lines are
+ to be interpreted as pubkey strings (see '-r' option).
+ -b, --buffer-ttl [integer]
+ Specify custom buffer period in seconds (default: 300 seconds)
+ -B, --script-ttl [time element string]
+ Specify custom script time-to-live in seconds (default: "day")
+ Valid values: "day", "hour"
+
+ EXAMPLE: (bash script lines)
+ $ gpspipe -r | /bin/bash bklog -v -e -c -z "UTC" -t "/dev/shm" \
+ -r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \
+ -r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \
+ -R ~/.config/bklog/recipients -w ".nmea" -b 300 -B "day" \
+ -o ~/Sync/Logs -l "location" \
+ -p "gpsbabel -i nmea -f - -o gpx -F - " ".gpx" \
+ -p "gpsbabel -i nmea -f - -o kml -F - " ".kml"
+EOF
+} # Display information on how to use this script.
+showVersion() {
+ yell "$scriptVersion"
+} # Display script version.
+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 )
+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 [[ "$returnState" = "warning_negative" ]]; then
+ return 2;
+ fi;
+} # Report seconds until next hour
+validateInput() {
+ # Desc: Validates Input
+ # Usage: validateInput [str input] [str input type]
+ # Version: 0.3.1
+ # Input: arg1: string to validate
+ # arg2: string specifying input type (ex:"ssh_pubkey")
+ # Output: return code 0: if input string matched specified string type
+ # Depends: bash 5, yell()
+
+ local fn argInput argType
+
+ # Save function name
+ fn="${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
+
+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: bash 5.0.3, processArguments(), vbm(), yell()
+ # Parse '-t' option (user-specified temporary working dir)
+ ## Set dir_tmp_parent to user-specified value if specified
+ local fn dir_tmp_parent
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicInitWorkingDir() function.";
+ if [[ "$optionTmpDir" = "true" ]]; then
+ if [[ -d "$argTempDirPriority" ]]; then
+ dir_tmp_parent="$argTempDirPriority";
+ else
+ yell "WARNING:$fn: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="$dirTmpDefault";
+ elif [[ -d /tmp ]]; then
+ yell "WARNING:$fn:$dirTmpDefault not available. Falling back to /tmp .";
+ dir_tmp_parent="/tmp";
+ else
+ yell "ERROR:$fn: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:$fn:Set dir_tmp to:$dir_tmp"; # Note: removed at end of main().
+ vbm "STATUS:$fn:Finished magicInitWorkingDir() function.";
+} # Sets working dir
+magicInitCheckTar() {
+ # Desc: Initializes or checks output tar
+ # input: vars: dirOut, bufferTTL, cmd_encrypt_suffix, cmd_compress_suffix
+ # input: vars: scriptHostname
+ # output: vars: pathout_tar
+ # depends: Bash 5.0.3, vbm(), dateShort(), checkMakeTar(), magicWriteVersion()
+ local fn
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicInitCheckTar() function.";
+ # Form pathout_tar
+ pathout_tar="$dirOut"/"$(dateShort "$(date --date="$bufferTTL seconds ago" --iso-8601=seconds)")".."$scriptHostname""$label""$cmd_compress_suffix""$cmd_encrypt_suffix".tar && \
+ vbm "STATUS:$fn:Set pathout_tar to:$pathout_tar";
+ # Validate pathout_tar as tar.
+ checkMakeTar "$pathout_tar";
+ ## Add VERSION file if checkMakeTar had to create a tar (exited 1) or replace one (exited 2)
+ vbm "STATUS:$fn:exit status before magicWriteVersion:$?"
+ if [[ $? -eq 1 ]] || [[ $? -eq 2 ]]; then magicWriteVersion; fi
+ vbm "STATUS:$fn:Finished magicInitCheckTar() function.";
+} # Initialize tar, set pathout_tar
+magicParseCompressionArg() {
+ # Desc: Parses compression arguments specified by '-c' option
+ # Input: vars: optionCompress
+ # Output: cmd_compress, cmd_compress_suffix
+ # Depends: processArguments(), vbm(), checkapp(), gzip 1.9
+ local fn
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicParseCompressionArg() function.";
+ if [[ "$optionCompress" = "true" ]]; then # Check if compression option active
+ if checkapp gzip; then # Check if gzip available
+ cmd_compress="gzip " && vbm "STATUS:$fn:cmd_compress:$cmd_compress";
+ cmd_compress_suffix=".gz" && vbm "STATUS:$fn:cmd_compress_suffix:$cmd_compress_suffix";
+ else
+ yell "ERROR:$fn:Compression enabled but \"gzip\" not found. Exiting."; exit 1;
+ fi;
+ else
+ cmd_compress="tee /dev/null " && vbm "STATUS:$fn:cmd_compress:$cmd_compress";
+ cmd_compress_suffix="" && vbm "STATUS:$fn:cmd_compress_suffix:$cmd_compress_suffix";
+ vbm "DEBUG:$fn:Compression not enabled.";
+ fi;
+ vbm "STATUS:$fn:Starting magicParseCompressionArg() function.";
+} # Form compression cmd string and filename suffix
+magicParseCustomTTL() {
+ # Desc: Set user-specified TTLs for buffer and script
+ # Usage: magicParseCustomTTL
+ # 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: Bash 5.0.3, yell(), vbm(), validateInput(), showUsage()
+ local fn
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicParseCustomTTL() function.";
+ # 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="$argCustomBufferTTL" && vbm "STATUS:$fn:Custom bufferTTL from -b:$bufferTTL";
+ else
+ ### F: argcustomBufferTTL is not an integer
+ yell "ERROR:$fn: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_TE" "time_element"; then
+ ### T: argCustomScriptTTL is a time element
+ scriptTTL_TE="$argCustomScriptTTL_TE" && vbm "STATUS:$fn:Custom scriptTTL_TE from -B:$scriptTTL_TE";
+ else
+ ### F: argcustomScriptTTL is not a time element
+ yell "ERROR:$fn:Invalid time element argument for custom script time-to-live."; showUsage; exit 1;
+ fi;
+ ## F: do not change scriptTTL_TE
+ fi;
+ vbm "STATUS:$fn:Starting magicParseCustomTTL() function.";
+} # Sets custom script or buffer TTL if specified
+magicParseLabel() {
+ # Desc: Parses -l option to set label
+ # In : optionLabel, argLabel
+ # Out: vars: label
+ # Depends: Bash 5.0.3, vbm(), yell()
+ local fn
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Started magicParseLabel() function.";
+ # Do nothing if optionLabel not set to true.
+ if [[ ! "$optionLabel" = "true" ]]; then
+ vbm "STATUS:$fn:optionlabel not set to 'true'. Returning early.";
+ return;
+ fi;
+ # Set label if optionLabel is true
+ if [[ "$optionLabel" = "true" ]]; then
+ label="_""$argLabel";
+ vbm "STATUS:$fn:Set label:$label";
+ fi;
+ vbm "STATUS:$fn:Finished magicParseLabel() function.";
+} # Set label used in output file name
+magicParseProcessStrings() {
+ # Desc: Processes user-supplied process strings into process commands for appendFileTar().
+ # Usage: magicParseProcessStrings
+ # In : vars: optionProcString optionNoStoreRaw optionStoreRaw argRawFileExt
+ # arry: argProcStrings, argProcFileExts
+ # Out: arry: procStrings, procFileExts
+ # Depends Bash 5.0.3, yell(), vbm()
+ local fn rawFileExt
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicParseProcessStrings() function.";
+ vbm "STATUS:$fn:var:optionProcString:$optionProcString";
+ vbm "STATUS:$fn:var:optionNoStoreRaw:$optionNoStoreRaw";
+ vbm "STATUS:$fn:var:optionStoreRaw:$optionStoreRaw";
+ vbm "STATUS:$fn:var:argRawFileExt:$argRawFileExt";
+ vbm "STATUS:$fn:ary:argProcStrings:${argProcStrings[*]}";
+ vbm "STATUS:$fn:ary:argProcFileExts:${argProcFileExts[*]}"
+ # Validate input
+ ## Validate argRawFileExt
+ if [[ "$argRawFileExt" =~ ^[.][[:alnum:]]*$ ]]; then
+ rawFileExt="$argRawFileExt";
+ fi;
+
+ # Add default stdin output file entries for procStrings, procFileExts
+ ## Check if user specified that no raw stdin be saved.
+ if [[ ! "$optionNoStoreRaw" = "true" ]]; then
+ ### T: --no-store-raw not set. Store raw. Append procStrings with cat.
+ #### Append procStrings array
+ procStrings+=("cat ");
+ #### Check if --store-raw set.
+ if [[ "$optionStoreRaw" = "true" ]]; then
+ ##### T: --store-raw set. Append procFileExts with user-specified file ext
+ procFileExts+=("$rawFileExt");
+ else
+ ##### F: --store-raw not set. Append procFileExts with default ".stdin" file ext
+ ###### Append procFileExts array
+ procFileExts+=(".stdin");
+ fi;
+ else
+ ### F: --no-store-raw set. Do not store raw.
+ #### Do not append procStrings or procFileExts arrays.
+ :
+ fi;
+
+ # Do nothing more if optionProcString not set to true.
+ if [[ ! "$optionProcString" = "true" ]]; then
+ vbm "STATUS:$fn:optionProcString not set to 'true'. Returning early.";
+ return; fi;
+ # Validate input array indices
+ ## Make sure that argProcStrings and argProcFileExts have same index counts
+ if ! [[ "${#argProcStrings[@]}" -eq "${#argProcFileExts[@]}" ]]; then
+ yell "ERROR:$fn:Mismatch in number of elements in arrays argProcStrings and argProcFileExts:${#argProcStrings[@]} DNE ${#argProcFileExts[@]}";
+ yell "STATUS:$fn:argProcStrings:${argProcStrings[*]}"; yell "STATUS:$fn:argProcFileExts:${argProcFileExts[*]}"; exit 1; fi;
+ ## Make sure that no array elements are blank
+ for element in "${argProcStrings[@]}"; do
+ if [[ -z "$element" ]]; then yell "ERROR:$fn:Empty process string specified. Exiting."; exit 1; fi; done
+ for element in "${argProcFileExts[@]}"; do
+ if [[ -z "$element" ]]; then yell "ERROR:$fn:Empty output file extension specified. Exiting."; exit 1; fi; done
+ ## Make sure that no process string starts with '-' (ex: if only one arg supplied after '-p' option)
+ for element in "${argProcStrings[@]}"; do
+ if [[ "$element" =~ ^[-][[:print:]]*$ ]] && [[ ! "$element" =~ ^[[:print:]]*$ ]]; then
+ yell "ERROR:$fn:Illegal character '-' at start of process string element:\"$element\"";
+ exit 1; fi; done;
+ vbm "STATUS:$fn:Quick check shows argProcStrings and argProcFileExts appear to have valid contents.";
+ procStrings=("${argProcStrings[@]}"); # Export process command strings
+ procFileExts=("${argProcFileExts[@]}"); # Export process command strings
+ vbm "STATUS:$fn:Finished magicParseProcessStrings() function.";
+} # Validate and save process strings and file extensions to arrays procStrings, procFileExts
+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: processArguments(), yell(), vbm(), checkapp(), checkAgePubkey(), validateInput()
+ local fn recipients
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicParseRecipientArgs() function.";
+ # Check if encryption option active.
+ if [[ "$optionEncrypt" = "true" ]] && [[ "$optionRecipients" = "true" ]]; then
+ if checkapp age; then # Check that age is available.
+ for pubkey in "${argRecPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message
+ vbm "DEBUG:$fn: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:$fn:Added pubkey for forming age recipient string:""$pubkey";
+ vbm "DEBUG:$fn:recipients:""$recipients";
+ #### Add validated pubkey to recPubKeysValid array
+ recPubKeysValid+=("$pubkey") && vbm "DEBUG:$fn:recPubkeysValid:pubkey added:$pubkey";
+ else
+ yell "ERROR:$fn:Exit code ""$?"". Invalid recipient pubkey string. Exiting."; exit 1;
+ fi;
+ done
+ vbm "DEBUG:$fn:Finished processing argRecPubKeys array";
+ vbm "STATUS:$fn:Array of validated pubkeys:${recPubKeysValid[*]}";
+ recPubKeysValidStatic=("${recPubKeysValid[@]}"); # Save static image of pubkeys validated by this function
+
+ ## Form age command string
+ cmd_encrypt="age ""$recipients " && vbm "STATUS:$fn:cmd_encrypt:$cmd_encrypt";
+ cmd_encrypt_suffix=".age" && vbm "STATUS:$fn:cmd_encrypt_suffix:$cmd_encrypt_suffix";
+ else
+ yell "ERROR:$fn:Encryption enabled but \"age\" not found. Exiting."; exit 1;
+ fi;
+ else
+ cmd_encrypt="tee /dev/null " && vbm "STATUS:$fn:cmd_encrypt:$cmd_encrypt";
+ cmd_encrypt_suffix="" && vbm "STATUS:$fn:cmd_encrypt_suffix:$cmd_encrypt_suffix";
+ vbm "DEBUG:$fn:Encryption not enabled."
+ fi;
+ # Catch case if '-e' is set but '-r' or '-R' is not
+ if [[ "$optionEncrypt" = "true" ]] && [[ ! "$optionRecipients" = "true" ]]; then
+ yell "ERROR:$fn:\\'-e\\' set but no \\'-r\\' or \\'-R\\' set."; exit 1; fi;
+ # Catch case if '-r' or '-R' set but '-e' is not
+ if [[ ! "$optionEncrypt" = "true" ]] && [[ "$optionRecipients" = "true" ]]; then
+ yell "ERROR:$fn:\\'-r\\' or \\'-R\\' set but \\'-e\\' is not set."; exit 1; fi;
+ vbm "STATUS:$fn:Finished magicParseRecipientArgs() function.";
+} # Populate recPubKeysValid with argRecPubKeys; form encryption cmd string and filename suffix
+magicParseRecipientDir() {
+ # Desc: Updates recPubKeysValid with pubkeys in dir specified by '-R' option ("recipient directory")
+ # Inputs: vars: optionEncrypt, optionRecDir, argRecDir,
+ # arry: recPubKeysValid
+ # Outputs: arry: recPubKeysValid
+ # Depends: processArguments(), yell(), vbm(), validateInput(), checkAgePubkey()
+ local fn recipientDir recFileLine updateRecipients
+ declare -a candRecPubKeysValid
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicParseRecipientDir() function.";
+ # Check that '-e' and '-R' set
+ if [[ "$optionEncrypt" = "true" ]] && [[ "$optionRecDir" = "true" ]]; then
+ ### Check that argRecDir is a directory.
+ if [[ -d "$argRecDir" ]]; then
+ recipientDir="$argRecDir" && vbm "STATUS:$fn: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 "$file")" && vbm "STATUS:$fn: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+=("$recFileLine") && vbm "STATUS:$fn:RecDir pubkey is valid pubkey:\"$recFileLine\"";
+ else
+ ###### F: throw warning;
+ yell "ERROR:$fn: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:$fn:Wrote candRecPubkeysValid to recPubKeysValid:\"${recPubKeysValid[*]}\"";
+ fi;
+ else
+ yell "ERROR:$fn:Recipient directory $argRecDir does not exist. Exiting."; exit 1;
+ fi;
+ fi;
+ # Handle case if '-R' set but '-e' not set
+ if [[ ! "$optionEncrypt" = "true" ]] && [[ "$optionRecDir" = "true" ]]; then
+ yell "ERROR:$fn: \\'-R\\' is set but \\'-e\\' is not set."; fi;
+ vbm "STATUS:$fn:Finished magicParseRecipientDir() function.";
+} # Update recPubKeysValid with argRecDir
+magicSetScriptTTL() {
+ #Desc: Sets script_TTL seconds from provided time_element string argument
+ #Usage: magicSetScriptTTL [str time_element]
+ #Input: arg1: string (Ex: scriptTTL_TE; "day" or "hour")
+ #Output: var: scriptTTL (integer seconds)
+ #Depends: timeUntilNextHour, timeUntilNextDay
+ local fn argTimeElement
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicSetScriptTTL() function.";
+ argTimeElement="$1";
+ if [[ "$argTimeElement" = "day" ]]; then
+ # Set script lifespan to end at start of next day
+ if ! scriptTTL="$(timeUntilNextDay)"; then # sets scriptTTL, then checks exit code
+ if [[ "$scriptTTL" -eq 0 ]]; then
+ ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
+ else
+ yell "ERROR:$fn:timeUntilNextDay exit code $?"; exit 1;
+ fi;
+ fi;
+ elif [[ "$argTimeElement" = "hour" ]]; then
+ # Set script lifespan to end at start of next hour
+ if ! scriptTTL="$(timeUntilNextHour)"; then # sets scriptTTL, then checks exit code
+ if [[ "$scriptTTL" -eq 0 ]]; then
+ ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
+ else
+ yell "ERROR:$fn:timeUntilNextHour exit code $?"; exit 1;
+ fi;
+ fi;
+ else
+ yell "ERROR:$fn:Invalid argument for setScriptTTL function:$argTimeElement"; exit 1;
+ fi;
+ vbm "STATUS:$fn:Finished magicSetScriptTTL() function.";
+} # Set scriptTTL in seconds until next (day|hour).
+magicWriteVersion() {
+ # Desc: Appends time-stamped VERSION to pathout_tar
+ # Usage: magicWriteVersion
+ # Input: vars: pathout_tar, dir_tmp
+ # Input: vars: scriptVersion, scriptURL, ageVersion, ageURL, scriptHostname
+ # Input: array: recPubKeysValid
+ # Output: appends tar (pathout_tar)
+ # Depends: bash 5.0.3, dateTimeShort(), appendArgTar()
+ local fn fileoutVersion contentVersion pubKeyIndex pubKeyIndex
+
+ # Save function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Starting magicWriteVersion() function.";
+ # 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" "$dir_tmp" && \
+ vbm "STATUS:$fn:Appended $fileoutVersion to $pathout_tar";
+ vbm "STATUS:$fn:Finished magicWriteVersion() function.";
+} # write version data to pathout_tar via appendArgTar()
+magicProcessWriteBuffer() {
+ # Desc: process and write buffer
+ # In : vars: bufferTTL bufferTTL_STR scriptHostname label dir_tmp SECONDS
+ # : arry: buffer
+ # Out: file:(pathout_tar)
+ # Depends: Bash 5.0.3, date 8.30, yell(), vbm(), dateTimeShort(),
+ ### Note: These arrays should all have the same number of elements:
+ ### pathouts, fileouts, procFileExts, procStrings
+
+ local fn timeBufferStartLong timeBufferStart fileoutBasename
+ local -a fileouts pathouts
+ local writeCmd1 writeCmd2 writeCmd3 writeCmd4
+
+ # Debug:Get function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Started magicProcessWriteBuffer().";
+ # Determine file paths (time is start of buffer period)
+ ## Calculate start time
+ timeBufferStartLong="$(date --date="$bufferTTL seconds ago" --iso-8601=seconds)" && \
+ vbm "DEBUG:$fn:timeBufferStartLong:$timeBufferStartLong";
+ timeBufferStart="$(dateTimeShort "$timeBufferStartLong" )" && \
+ vbm "DEBUG:$fn:timeBufferStart:$timeBufferStart"; # Note start time YYYYmmddTHHMMSS+zzzz (no separators)
+ ## Set common basename
+ fileoutBasename="$timeBufferStart""--""$bufferTTL_STR""..""$scriptHostname""$label" && \
+ vbm "STATUS:$fn:Set fileoutBasename to:$fileoutBasename";
+ ## Determine output file name array
+ ### in: fileOutBasename cmd_compress_suffix cmd_encrypt_suffix procFileExts
+ for fileExt in "${procFileExts[@]}"; do
+ fileouts+=("$fileoutBasename""$fileExt""$cmd_compress_suffix""$cmd_encrypt_suffix") && \
+ vbm "STATUS:$fn:Added $fileExt to fileouts:${fileouts[*]}";
+ done;
+ for fileName in "${fileouts[@]}"; do
+ pathouts+=("$dir_tmp"/"$fileName") && \
+ vbm "STATUS:$fn:Added $fileName to pathouts:${pathouts[*]}";
+ done;
+ ## Update pathout_tar
+ magicInitCheckTar;
+
+ # Process and write buffers to dir_tmp
+ ## Prepare command strings
+ writeCmd1="printf \"%s\\\\n\" \"\${buffer[@]}\""; # printf "%s\\n" "${buffer[@]}"
+ #writeCmd2="" # NOTE: Specified by parsing array procStrings
+ writeCmd3="$cmd_compress";
+ writeCmd4="$cmd_encrypt";
+
+ ## Process buffer and write to dir_tmp
+ for index in "${!pathouts[@]}"; do
+ writeCmd2="${procStrings[$index]}"
+ eval "$writeCmd1 | $writeCmd2 | $writeCmd3 | $writeCmd4" >> "${pathouts[$index]}";
+ done;
+
+ # Append dir_tmp files to pathout_tar
+ wait; # Wait to avoid collision with older magicProcessWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
+ for index in "${!pathouts[@]}"; do
+ appendFileTar "${pathouts[$index]}" "${fileouts[$index]}" "$pathout_tar" "$dir_tmp";
+ done;
+
+ # Remove secured chunks from dir_tmp
+ for path in "${pathouts[@]}"; do
+ rm "$path";
+ done;
+
+ vbm "STATUS:$fn:Finished magicProcessWriteBuffer().";
+} # Process and Write buffer
+
+main() {
+ # Desc: Main function
+ # Usage: main "$@"
+ # Inputs: many
+ # Outputs: file (pathout_tar)
+ # Depends: many
+ local fn
+
+ # Debug:Get function name
+ fn="${FUNCNAME[0]}";
+
+ vbm "STATUS:$fn:Started function main().";
+ # Process arguments
+ processArguments "$@";
+ ## Determine working directory
+ magicInitWorkingDir; # Sets dir_tmp from argTempDirPriority
+ ## Set output encryption and compression option strings
+ ### React to "-e" and "-r" ("encryption recipients") options
+ magicParseRecipientArgs; # Updates recPubKeysValid, cmd_encrypt[_suffix] from argRecPubKeys
+ ### React to "-R" ("recipient directory") option
+ magicParseRecipientDir; # Updates recPubKeysValid
+ ### React to "-c" ("compression") option
+ magicParseCompressionArg; # Updates cmd_compress[_suffix]
+ ## React to "-b" and "-B" (custom buffer and script TTL) options
+ magicParseCustomTTL; # Sets custom scriptTTL_TE and/or bufferTTL if specified
+ ## React to "-p" (user-supplied process command and file extension strings) options
+ magicParseProcessStrings; # Sets arrays: procStrings, procFileExts
+ ## React to "-l" (output file label) option
+ magicParseLabel; # sets label (ex: "_location")
+
+ # Perform secondary setup operations
+ ## Set script lifespan (scriptTTL from scriptTTL_TE)
+ magicSetScriptTTL "$scriptTTL_TE";
+ ## File name substring (ISO-8601 duration from bufferTTL)
+ bufferTTL_STR="$(timeDuration "$bufferTTL")" && vbm "DEBUG:$fn:bufferTTL_STR:$bufferTTL_STR";
+ ## Init temp working dir
+ try mkdir "$dir_tmp" && vbm "DEBUG:$fn:Working dir created at dir_tmp:$dir_tmp";
+ ## Initialize output tar (set pathout_tar)
+ magicInitCheckTar;
+
+ # Check vital apps, files, dirs
+ if ! checkapp tar && ! checkdir "$dirOut" "dir_tmp"; then
+ yell "ERROR:$fn:Critical components missing.";
+ displayMissing; yell "Exiting."; exit 1; fi
+
+ # MAIN LOOP: Run until script TTL seconds pass
+ bufferRound=0;
+ while [[ $SECONDS -lt "scriptTTL" ]]; do
+ vbm "STATUS:$fn:Starting buffer round:$bufferRound";
+ bufferTOD="$((SECONDS + bufferTTL))"; # Set buffer round time-of-death
+ # Consume stdin to fill buffer until buffer time-of-death (TOD) arrives
+ while read -r -t "$bufferTTL" line && [[ $SECONDS -lt "$bufferTOD" ]]; do
+ # Append line to buffer array
+ buffer+=("$line");
+ done;
+ # Create dir_tmp if missing
+ if ! [[ -d "$dir_tmp" ]]; then
+ yell "ERROR:$fn:dir_tmp existence failure:$dir_tmp";
+ try mkdir "$dir_tmp" && vbm "DEBUG:$fn:Working dir recreated dir_tmp:$dir_tmp"; fi
+ # Update encryption recipient array
+ magicParseRecipientDir; # Update recPubKeysValid with argRecDir
+ # Export buffer to asynchronous processing.
+ magicProcessWriteBuffer &
+ unset buffer; # Clear buffer array for next bufferRound
+ # Increment buffer round
+ ((bufferRound++));
+ done;
+
+ # Cleanup
+ ## Remove dir_tmp
+ try rm -r "$dir_tmp" && vbm "STATUS:$fn:Removed dir_tmp:$dir_tmp";
+
+ vbm "STATUS:$fn:Finished function main().";
+} # Main function
+
+#===END Declare local script functions===
+#==END Define script parameters==
+
+#==BEGIN Perform work and exit==
+main "$@" # Run main function.
+exit 0;
+#==END Perform work and exit==
+
+# Author: Steven Baltakatei Sandoval;
# License: GPLv3+
projects / EVA-2020-02.git / blobdiff