#==BEGIN Define script parameters==
## Logging Behavior parameters
BUFFER_TTL="300"; # time between file writes
-SCRIPT_TTL="day"; # (day|hour)
+SCRIPT_TTL_TE="day"; # (day|hour)
#### TZ="UTC"; export TZ; # Default time zone; overridden by '--time-zone=[str]' option
DIR_TMP_DEFAULT="/dev/shm"; # Default parent of working directory
SCRIPT_TIME_START=$(date +%Y%m%dT%H%M%S.%N);
PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case apps saved there
SCRIPT_HOSTNAME=$(hostname); # Save hostname of system running this script.
-SCRIPT_VERSION="0.3.9"; # Define version of script.
+SCRIPT_VERSION="0.5.3"; # Define version of script.
SCRIPT_NAME="bkgpslog"; # Define basename of script file.
SCRIPT_URL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script.
AGE_VERSION="1.0.0-beta2"; # Define version of age (encryption program)
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
OPTION_VERBOSE=""; OPTION_ENCRYPT=""; OPTION_COMPRESS=""; OPTION_TMPDIR="";
+errReset=0; BUFFER_TTL_ADJ_FLOAT="";
#===BEGIN Declare local script functions===
checkapp() {
echoerr " Display debugging info."
echoerr " -e, --encrypt"
echoerr " Encrypt output."
- echoerr " -r, --recipient [ pubkey string ]"
+ 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 [ directory ]"
+ 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"
+ echoerr " -t, --temp-dir [path dir]"
echoerr " Specify parent directory for temporary working directory."
echoerr " Default: \"/dev/shm\""
- echoerr " -R, --recipient-dir"
+ 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 " 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 \\"
-r | --recipient) OPTION_RECIPIENTS="true"; argRecPubKeys+=("$2"); vbm "STATUS:pubkey added:""$2"; shift;; # Add recipients
-c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";; # Enable compression
-z | --time-zone) try setTimeZoneEV "$2"; shift;; # Set timestamp timezone
- -t | --temp-dir) OPTION_TMPDIR="true" && argTmpDirPriority="$2"; shift;; # Set time zone
+ -t | --temp-dir) OPTION_TMPDIR="true" && argTempDirPriority="$2"; shift;; # Set time zone
-R | --recipient-dir) OPTION_RECIPIENTS="true"; OPTION_RECDIR="true" && argRecDir="$2"; shift;; # Add recipient watch dir
+ -b | --buffer-ttl) OPTION_CUSTOM_BUFFERTTL="true" && argCustomBufferTTL="$2"; shift;; # Set custom buffer period (default: 300 seconds)
+ -B | --script-ttl) OPTION_CUSTOM_SCRIPTTTL_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
#==END Display errors==
} # Display missing apps, files, dirs
-setScriptTTL() {
- #Desc: Sets script TTL
- #Usage: setScriptTTL arg1
- #Input: arg1: "day" or "hour"
- #Output: scriptTTL
- #Depends: timeUntilNextHour or timeUntilNextDay
- local ARG1
- ARG1="$1"
- if [[ "$ARG1" = "day" ]]; then
+magicSetScriptTTL() {
+ #Desc: Sets script_TTL seconds from provided time_element string argument
+ #Usage: magicSetScriptTTL [str time_element]
+ #Input: arg1: string (Ex: SCRIPT_TTL_TE; "day" or "hour")
+ #Output: var: SCRIPT_TTL (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.
+ if ! SCRIPT_TTL="$(timeUntilNextDay)"; then
+ if [[ "$SCRIPT_TTL" -eq 0 ]]; then
+ ((SCRIPT_TTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
else
yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
fi;
fi;
- elif [[ "$ARG1" = "hour" ]]; then
+ elif [[ "$argTimeElement" = "hour" ]]; then
# Set script lifespan to end at start of next hour
- if ! scriptTTL="$(timeUntilNextHour)"; then
- if [[ "$scriptTTL" -eq 0 ]]; then
- ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
+ if ! SCRIPT_TTL="$(timeUntilNextHour)"; then
+ if [[ "$SCRIPT_TTL" -eq 0 ]]; then
+ ((SCRIPT_TTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
else
yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
fi;
fi;
else
- yell "ERROR:Invalid argument for setScriptTTL function."; exit 1;
+ yell "ERROR:Invalid argument for setScriptTTL function:$argTimeElement"; exit 1;
fi
} # Seconds until next (day|hour).
checkMakeTar() {
validateInput() {
# Desc: Validates Input
# Usage: validateInput [str input] [str input type]
- # Version: 0.2.1
+ # Version: 0.3.0
# Input: arg1: string to validate
# arg2: string specifying input type (ex:"ssh_pubkey")
# Output: return code 0: if input string matched specified string type
### Check for alnum/dash base64 (ex: "ssh-rsa AAAAB3NzaC1yc2EAAA")
if [[ "$argType" = "ssh_pubkey" ]]; then
if [[ "$argInput" =~ ^[[:alnum:]-]*[\ ]*[[:alnum:]+/=]*$ ]]; then
- return 0; fi; fi;
+ return 0; fi; fi;
## age_pubkey
### Check for age1[:bech32:]
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 0.2.2
+ # Input: arg1: 'date'-parsable timestamp string (optional)
+ # Output: Nanoseconds since 1970-01-01
+ # Depends: date 8, yell()
+ # Ref/Attrib: Force base 10 Bash arith with '10#'. https://stackoverflow.com/a/24777667
+ local TIME_CURRENT TIME_INPUT TIME_EPOCH_FLOAT TIME_EPOCH_NSFRAC
+ local TIME_EPOCH_NS
+
+ argTime="$1";
+
+ # Get Current Time
+ TIME_CURRENT="$(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 "$argTime" ]]; then
+ ## T: Time argument empty, use current time
+ TIME_INPUT="$TIME_CURRENT";
+ else
+ ## F: Time argument exists, validate time
+ if date --date="$argTime" 1>/dev/null 2>&1; then
+ ### T: Time argument is valid; use it
+ TIME_INPUT="$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
+ TIME_EPOCH_FLOAT="$(date --date="$TIME_INPUT" +%s.%N)"; # Save ssss.NNNNNNNNN
+ TIME_EPOCH_INT="$(echo "$TIME_EPOCH_FLOAT" | cut -d. -f1)"; # Get ssss
+ TIME_EPOCH_NSFRAC="$(echo "$TIME_EPOCH_FLOAT" | cut -d. -f2)"; # Get NNNNNNNNN
+ TIME_EPOCH_NS="$(( (10#"$TIME_EPOCH_INT" * 10**9) + (10#"$TIME_EPOCH_NSFRAC") ))";
+ echo "$TIME_EPOCH_NS";
+} # Nanoseconds since 1970-01-01
+magicBufferSleepPID() {
+ # Desc: Compensates for lag so buffer rounds start every BUFFER_TTL seconds
+ # Input: vars: BUFFER_TTL, errResetx10e3, K_P, T_I, T_D
+ # # Input: array: errorHistory
+ # Output: vars: BUFFER_TTL_ADJ_FLOAT
+ # Re/Attrib: https://en.wikipedia.org/wiki/PID_controller#Standard_versus_parallel_(ideal)_form
+ local BUFFER_TTL_NS
+ local timeBufferStartNS timeBufferStartNSExp errNS errNSx10e3
+ local errResetx10e3 errRatex10e3 ADJ BUFFER_TTL_ADJ_NS BUFFER_TTL_ADJ_INT
+ local BUFFER_TTL_ADJ_FLOATFRAC
+ # local errorHistorySize
+
+ # ## Define errorHistorySize
+ # errorHistorySize=100;
+ ## Define BUFFER_TTL in nanoseconds
+ BUFFER_TTL_NS=$((BUFFER_TTL * 10**9)) && vbm "BUFFER_TTL_NS:$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 BUFFER_TTL)
+ 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:$ADJ";
+
+ # Calculate BUFFER_TTL_ADJ_FLOAT from ADJ (ns)
+ ## Calculate BUFFER_TTL_ADJ in nanoseconds (BUFFER_TTL_ADJ_NS = BUFFER_TTL_NS + ADJ)
+ BUFFER_TTL_ADJ_NS="$((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:$BUFFER_TTL_ADJ_INT";
+ ### Catch negative integer seconds, set minimum of BUFFER_TTL/10 seconds
+ if [[ "$BUFFER_TTL_ADJ_INT" -le "$((BUFFER_TTL/10))" ]]; then
+ BUFFER_TTL_ADJ_INT="$((BUFFER_TTL/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 BUFFER_TTL_ADJ_FLOAT
+ BUFFER_TTL_ADJ_FLOAT="$BUFFER_TTL_ADJ_INT"."$BUFFER_TTL_ADJ_FLOATFRAC" && vbm "BUFFER_TTL_ADJ_FLOAT:$BUFFER_TTL_ADJ_FLOAT";
+ vbm "STATUS:Calculated adjusted BUFFER_TTL (seconds):$BUFFER_TTL_ADJ_FLOAT";
+} # Calc BUFFER_TTL_ADJ_FLOAT so buffer starts every BUFFER_TTL seconds
magicWriteVersion() {
# Desc: Appends time-stamped VERSION to PATHOUT_TAR
# Usage: magicWriteVersion
} # 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: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP,
- # Inputs: BUFFER_TTL bufferTTL_STR SCRIPT_HOSTNAME CMD_COMPRESS_SUFFIX CMD_ENCRYPT_SUFFIX
- # Depends: yell, try, vbm, appendArgTar, tar
- local FN="${FUNCNAME[0]}";
- wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
+ # Inputs: vars: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP,
+ # Inputs: vars: BUFFER_TTL bufferTTL_STR SCRIPT_HOSTNAME CMD_COMPRESS_SUFFIX CMD_ENCRYPT_SUFFIX
+ # Output: file: (PATHOUT_TAR)
+ # Depends: yell(), try(), vbm(), appendArgTar(), tar 1, sleep 8, checkMakeTar()
+ # Depends: magicWriteVersion(), appendFileTar()
+ local FN
+
+ vbm "DEBUG:STATUS:$FN:Started magicGatherWriteBuffer().";
+ # Debug:Get function name
+ FN="${FUNCNAME[0]}";
+
# Create buffer file with unique name
- PATHOUT_BUFFER="$DIR_TMP/buffer$SECONDS";
+ PATHOUT_BUFFER="$DIR_TMP/buffer$SECONDS" && vbm "PATHOUT_BUFFER:$PATHOUT_BUFFER";
# Fill buffer
timeout "$BUFFER_TTL"s gpspipe -r -o "$PATHOUT_BUFFER" ;
- timeBufferStart="$(dateTimeShort "$(date --date="$BUFFER_TTL seconds ago")")"; # Note start time
- vbm "DEBUG:STATUS:$FN:Started magicWriteBuffer().";
+ timeBufferStart="$(dateTimeShort "$(date --date="$BUFFER_TTL seconds ago")" )" && vbm "timeBufferStart:$timeBufferStart"; # Note start time
# Determine file paths (time is start of buffer period)
FILEOUT_BASENAME="$timeBufferStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" && vbm "STATUS:Set FILEOUT_BASENAME to:$FILEOUT_BASENAME";
## Files saved to DIR_TMP
if [[ $? -eq 1 ]] || [[ $? -eq 2 ]]; then magicWriteVersion; fi
# Write bufferBash to PATHOUT_TAR
+ wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
appendFileTar "$PATHOUT_BUFFER" "$FILEOUT_NMEA" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_NMEA" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write NMEA data
appendFileTar "$PATHOUT_BUFFER" "$FILEOUT_GPX" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_GPX" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write GPX file
appendFileTar "$PATHOUT_BUFFER" "$FILEOUT_KML" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_KML" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write KML file
# Remove secured chunks from DIR_TMP
rm "$PATHOUT_BUFFER" "$PATHOUT_NMEA" "$PATHOUT_GPX" "$PATHOUT_KML";
- vbm "DEBUG:STATUS:$FN:Finished magicWriteBuffer().";
+ vbm "DEBUG:STATUS:$FN:Finished magicGatherWriteBuffer().";
} # write buffer to disk
magicParseRecipientDir() {
# Desc: Updates recPubKeysValid with pubkeys in dir specified by '-R' option ("recipient directory")
- # Inputs: vars: OPTION_RECDIR, argRecDir, OPTION_ENCRYPTION
+ # Inputs: vars: OPTION_RECDIR, argRecDir, OPTION_ENCRYPT
# arry: recPubKeysValid
# Outputs: arry: recPubKeysValid
# Depends: processArguments,
declare -a candRecPubKeysValid
# Check that '-e' and '-R' set
- if [[ "$OPTION_ENCRYPTION" = "true" ]] && [[ "$OPTION_RECDIR" = "true" ]]; then
+ if [[ "$OPTION_ENCRYPT" = "true" ]] && [[ "$OPTION_RECDIR" = "true" ]]; then
### Check that argRecDir is a directory.
if [[ -d "$argRecDir" ]]; then
- recipientDir="$argRecDir";
+ recipientDir="$argRecDir" && vbm "STATUS:Recipient watch directory detected:\"$recipientDir\"";
#### Initialize variable indicating outcome of pubkey review
unset updateRecipients
#### Add existing recipients
- candRecPubKeysValid=(${recPubKeysValid[@]});
+ candRecPubKeysValid=("${recPubKeysValidStatic[@]}");
#### Parse files in recipientDir
for file in "$recipientDir"/*; do
##### Read first line of each file
- recFileLine="$(cat "$file" | head -n1)";
+ recFileLine="$(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");
+ candRecPubKeysValid+=("$recFileLine") && vbm "STATUS:RecDir pubkey is valid pubkey:\"$recFileLine\"";
else
###### F: throw warning;
yell "ERROR:Invalid recipient file detected. Not modifying recipient list."
fi;
done
#### Write updated recPubKeysValid array to recPubKeysValid if no failure detected
- if ! updateRecipients="false"; then
- recPubKeysValid=(${candRecPubKeysValid[@]});
+ if ! [[ "$updateRecipients" = "false" ]]; then
+ recPubKeysValid=("${candRecPubKeysValid[@]}") && vbm "STATUS:Wrote candRecPubkeysValid to recPubKeysValid:\"${recPubKeysValid[*]}\"";
fi;
else
yell "ERROR:$0:Recipient directory $argRecDir does not exist. Exiting."; exit 1;
fi;
fi;
- # Handle case if '-e' set but '-R' not set
- if [[ "$OPTION_ENCRYPTION" = "true" ]] && [[ ! "$OPTION_RECDIR" = "true" ]]; then
- yell "ERROR: \'-e\' set but \'-R\' is not set."; fi;
# Handle case if '-R' set but '-e' not set
- if [[ ! "$OPTION_ENCRYPTION" = "true" ]] && [[ "$OPTION_RECDIR" = "true" ]]; then
- yell "ERROR: \'-R\' is set but \'-e\' is not set."; fi;
+ if [[ ! "$OPTION_ENCRYPT" = "true" ]] && [[ "$OPTION_RECDIR" = "true" ]]; then
+ yell "ERROR: \\'-R\\' is set but \\'-e\\' is not set."; fi;
} # Update recPubKeysValid with argRecDir
magicParseRecipientArgs() {
# Desc: Parses recipient arguments specified by '-r' option
# Input: vars: OPTION_ENCRYPT from processArguments()
# arry: argRecPubKeys from processArguments()
# Output: vars: CMD_ENCRYPT, CMD_ENCRYPT_SUFFIX
- # arry: recPubKeysValid
+ # arry: recPubKeysValid, recPubKeysValidStatic
# Depends: checkapp(), checkAgePubkey(), validateInput(), processArguments()
local recipients
fi;
done
vbm "DEBUG:Finished processing argRecPubKeys array";
+ vbm "STATUS:Array of validated pubkeys:${recPubKeysValid[*]}";
+ recPubKeysValidStatic=("${recPubKeysValid[@]}"); # Save static image of pubkeys validated by this function
## Form age command string
CMD_ENCRYPT="age ""$recipients " && vbm "CMD_ENCRYPT:$CMD_ENCRYPT";
fi;
# Catch case if '-e' is set but '-r' or '-R' is not
if [[ "$OPTION_ENCRYPT" = "true" ]] && [[ ! "$OPTION_RECIPIENTS" = "true" ]]; then
- yell "ERROR:\'-e\' set but no \'-r\' or \'-R\' set."; exit 1; fi;
+ yell "ERROR:\\'-e\\' set but no \\'-r\\' or \\'-R\\' set."; exit 1; fi;
# Catch case if '-r' or '-R' set but '-e' is not
if [[ ! "$OPTION_ENCRYPT" = "true" ]] && [[ "$OPTION_RECIPIENTS" = "true" ]]; then
- yell "ERROR:\'-r\' or \'-R\' set but \'-e\' is not set."; exit 1; fi;
+ yell "ERROR:\\'-r\\' or \\'-R\\' set but \\'-e\\' is not set."; exit 1; fi;
} # Populate recPubKeysValid with argRecPubKeys; form encryption cmd string and filename suffix
magicParseCompressionArg() {
# Desc: Parses compression arguments specified by '-c' option
} # Form compression cmd string and filename suffix
magicInitWorkingDir() {
# Desc: Determine temporary working directory from defaults or user input
- # Input: vars: OPTION_TEMPDIR, argTmpDirPriority, DIR_TMP_DEFAULT
+ # Usage: magicInitWorkignDir
+ # Input: vars: OPTION_TEMPDIR, argTempDirPriority, DIR_TMP_DEFAULT
# Input: vars: SCRIPT_TIME_START
# Output: vars: DIR_TMP
# Depends: processArguments(), vbm(), yell()
if [[ -d "$argTempDirPriority" ]]; then
DIR_TMP_PARENT="$argTempDirPriority";
else
- yell "WARNING:Specified temporary working directory not valid:$OPTION_TMPDIR";
+ yell "WARNING:Specified temporary working directory not valid:$argTempDirPriority";
exit 1; # Exit since user requires a specific temp dir and it is not available.
fi;
else
## Set DIR_TMP using DIR_TMP_PARENT and nonce (SCRIPT_TIME_START)
DIR_TMP="$DIR_TMP_PARENT"/"$SCRIPT_TIME_START""..bkgpslog" && vbm "DEBUG:Set DIR_TMP to:$DIR_TMP"; # Note: removed at end of main().
} # Sets working dir
+magicParseCustomTTL() {
+ # Desc: Set user-specified TTLs for buffer and script
+ # Input: vars: argCustomBufferTTL (integer), argCustomScriptTTL_TE (string)
+ # Input: vars: OPTION_CUSTOM_BUFFERTTL, OPTION_CUSTOM_SCRIPTTTL
+ # Input: vars: BUFFER_TTL (integer), SCRIPT_TTL_TE (string)
+ # Output: BUFFER_TTL (integer), SCRIPT_TTL_TE (string)
+ # Depends validateInput(), showUsage(), yell
+
+ # React to '-b, --buffer-ttl' option
+ if [[ "$OPTION_CUSTOM_BUFFERTTL" = "true" ]]; then
+ ## T: Check if argCustomBufferTTL is an integer
+ if validateInput "$argCustomBufferTTL" "integer"; then
+ ### T: argCustomBufferTTL is an integer
+ BUFFER_TTL="$argCustomBufferTTL" && vbm "Custom BUFFER_TTL from -b:$BUFFER_TTL";
+ 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 BUFFER_TTL
+ fi;
+
+ # React to '-B, --script-ttl' option
+ if [[ "$OPTION_CUSTOM_SCRIPTTTL_TE" = "true" ]]; then
+ ## T: Check if argCustomScriptTTL is a time element (ex: "day", "hour")
+ if validateInput "$argCustomScriptTTL" "time_element"; then
+ ### T: argCustomScriptTTL is a time element
+ SCRIPT_TTL_TE="$argCustomScriptTTL" && vbm "Custom SCRIPT_TTL_TE from -B:$SCRIPT_TTL_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 SCRIPT_TTL_TE
+ fi;
+} # Sets custom script or buffer TTL if specified
+
main() {
# Process arguments
processArguments "$@";
## Act upon arguments
### Determine working directory
- magicInitWorkingDir; # Sets DIR_TMP
+ magicInitWorkingDir; # Sets DIR_TMP from argTempDirPriority
### Set output encryption and compression option strings
#### React to "-r" ("encryption recipients") option
- magicParseRecipientArgs; # Updates recPubKeysValid, CMD_ENCRYPT[_SUFFIX]
+ magicParseRecipientArgs; # Updates recPubKeysValid, CMD_ENCRYPT[_SUFFIX] from argRecPubKeys
#### React to "-c" ("compression") option
magicParseCompressionArg; # Updates CMD_COMPRESS[_SUFFIX]
#### React to "-R" ("recipient directory") option
magicParseRecipientDir; # Updates recPubKeysValid
+ #### React to custom buffer and script TTL options ("-b", "-B")
+ magicParseCustomTTL; # Sets custom SCRIPT_TTL_TE and/or BUFFER_TTL if specified
# Check that critical apps and dirs are available, display missing ones.
if ! checkapp gpspipe tar && ! checkdir "$DIR_OUT" "DIR_TMP"; then
yell "ERROR:Critical components missing.";
displayMissing; yell "Exiting."; exit 1; fi
- # Set script lifespan
- setScriptTTL "$SCRIPT_TTL"; # seconds until next new SCRIPT_TTL (ex: "day" or "hour")
+ # Set script lifespan (SCRIPT_TTL from SCRIPT_TTL_TE)
+ magicSetScriptTTL "$SCRIPT_TTL_TE";
+ ## Note: SCRIPT_TTL_TE is time element string (ex: "day") while SCRIPT_TTL is integer seconds
- # File name substring: encoded bufferTTL
- bufferTTL_STR="$(timeDuration $BUFFER_TTL)";
+ # File name substring (ISO-8601 duration from BUFFER_TTL)
+ bufferTTL_STR="$(timeDuration "$BUFFER_TTL")";
# Init temp working dir
try mkdir "$DIR_TMP" && vbm "DEBUG:Working dir creatd at:$DIR_TMP";
CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " && vbm "STATUS:Set CMD_CONV_KML to:$CMD_CONV_KML"; # convert NMEA to KML
# MAIN LOOP:Record gps data until script lifespan ends
- while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
+ timeBufferFirstNS="$(timeEpochNS)"; bufferRound=0; BUFFER_TTL_ADJ_FLOAT="$BUFFER_TTL";
+ while [[ "$SECONDS" -lt "$SCRIPT_TTL" ]]; do
+ magicParseRecipientDir;
magicGatherWriteBuffer &
- sleep "$BUFFER_TTL";
+ sleep "$BUFFER_TTL_ADJ_FLOAT"; # adjusted by magicBufferSleepPID
+ ((bufferRound++));
+ magicBufferSleepPID; # Calculates BUFFER_TTL_ADJ_FLOAT from BUFFER_TTL given buffer expected start time vs. actual
done
# Cleanup
projects / EVA-2020-02.git / blobdiff