X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02.git/blobdiff_plain/c78a1a206b48ce414f23f2eb8b3639e76fc0731a..56475ae09ef746bdece9e75ddc1383d2d39e8587:/exec/bkgpslog diff --git a/exec/bkgpslog b/exec/bkgpslog index 5cfa7cc..0734291 100755 --- a/exec/bkgpslog +++ b/exec/bkgpslog @@ -1,25 +1,136 @@ #!/bin/bash -# Author: Steven Baltakatei Sandoval +# Desc: Records gps data until midnight +# Author: Steven Baltakatei Sandoval; License: GPLv3+ +# Usage: bkgpslog --output [output dir] -#== Variable Initialization == - -#== Global constants == -PATH="/usr/local/bin/:$PATH" # Add default OpenTimestamps path to PATH (necessary if cron used to call this script) +#==BEGIN Define script parameters== PATH="/opt/bktei:$PATH" # Add default baltakatei script install directory to PATH (necessary for other bk scripts) SCRIPT_HOSTNAME=$(hostname) # Save hostname of system running this script. SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script. SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format. SCRIPT_DATE_SHORT="$(date +%Y%m%d)" # Save current date in ISO-8601 format. -#DIROUT1="/home/pi/Sync/Evanescent_Location" # Define output directory. -#== Function Definitions == +declare -Ag appRollCall # Associative array for storing app status +declare -Ag fileRollCall # Associative array for storing file status +declare -Ag dirRollCall # Associative array for storing dir status +declare -a recPubKeys # for processArguments function +declare recipients # for main function + +#===BEGIN Declare local script functions=== +checkapp() { + # Desc: If arg is a command, save result in assoc array 'appRollCall' + # Usage: checkapp arg1 arg2 arg3 ... + # Input: global assoc. array 'appRollCall' + # Output: adds/updates key(value) to global assoc array 'appRollCall' + local returnState + #echo "DEBUG:$(date +%S.%N)..Starting checkapp function." + #echo "DEBUG:args: $@" + #echo "DEBUG:returnState:$returnState" + + #===Process Args=== + for arg in "$@"; do + #echo "DEBUG:processing arg:$arg" + if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command + appRollCall[$arg]="true"; + #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]} + if ! [ "$returnState" = "false" ]; then returnState="true"; fi + else + appRollCall[$arg]="false"; returnState="false"; + fi + done + + #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done + #echo "DEBUG:evaluating returnstate. returnState:"$returnState + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + #echo "DEBUG:checkapp returns true for $arg"; + return 0; + else + #echo "DEBUG:checkapp returns false for $arg"; + return 1; + fi +} # Check that app exists +checkfile() { + # Desc: If arg is a file path, save result in assoc array 'fileRollCall' + # Usage: checkfile arg1 arg2 arg3 ... + # Input: global assoc. array 'fileRollCall' + # Output: adds/updates key(value) to global assoc array 'fileRollCall'; + # Output: returns 0 if app found, 1 otherwise + local returnState + + #===Process Args=== + for arg in "$@"; do + #echo "DEBUG:processing arg:$arg" + if [ -f "$arg" ]; then + fileRollCall["$arg"]="true"; + #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]} + if ! [ "$returnState" = "false" ]; then returnState="true"; fi + else + fileRollCall["$arg"]="false"; returnState="false"; + fi + done + + #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done + #echo "DEBUG:evaluating returnstate. returnState:"$returnState + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + #echo "DEBUG:checkapp returns true for $arg"; + return 0; + else + #echo "DEBUG:checkapp returns false for $arg"; + return 1; + fi +} # Check that file exists +checkdir() { + # Desc: If arg is a dir path, save result in assoc array 'dirRollCall' + # Usage: checkdir arg1 arg2 arg3 ... + # Input: global assoc. array 'dirRollCall' + # Output: adds/updates key(value) to global assoc array 'dirRollCall'; + # Output: returns 0 if app found, 1 otherwise + local returnState + + #===Process Args=== + for arg in "$@"; do + #echo "DEBUG:processing arg:$arg" + if [ -d "$arg" ]; then + dirRollCall["$arg"]="true"; + #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]} + if ! [ "$returnState" = "false" ]; then returnState="true"; fi + elif [ "$arg" = "" ]; then + dirRollCall["$arg"]="false"; returnState="false"; + else + returnState="false"; + fi + done + + #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done + #echo "DEBUG:evaluating returnstate. returnState:"$returnState + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + #echo "DEBUG:checkapp returns true for $arg"; + return 0; + else + #echo "DEBUG:checkapp returns false for $arg"; + return 1; + fi +} # Check that dir exists + +# Yell, Die, Try Three-Fingered Claw technique +# Ref/Attrib: https://stackoverflow.com/a/25515370 +yell() { echo "$0: $*" >&2; } +die() { yell "$*"; exit 111; } +try() { "$@" || die "cannot $*"; } + echoerr() { echo "$@" 1>&2; # Define stderr echo function. } # Define stderr message function. showUsage() { echoerr "USAGE:" - echoerr " bkgpslog.sh [ options ]" + echoerr " bkgpslog [ options ]" echoerr echoerr "OPTIONS:" echoerr " -h, --help" @@ -31,76 +142,240 @@ showUsage() { echoerr " -v, --verbose" echoerr " Display debugging info." echoerr + echoerr " -e, --encrypt" + echoerr " Encrypt output." + echoerr + echoerr " -r, --recipient [ pubkey string ]" + echoerr " Specify recipient." + echoerr echoerr " -o, --output [ directory ]" echoerr " Specify output directory to save logs." + echoerr + echoerr " -c, --compress" + echoerr " Compress output with gzip (before encryption if enabled)." + echoerr + echoerr "EXAMPLE: (bash script lines)" + echoerr "/bin/bash bkgpslog -e -c \\" + echoerr "-r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \\" + echoerr "-r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \\" + echoerr "-o ~/Sync/Location" } # Display information on how to use this script. showVersion() { echoerr "$SCRIPT_VERSION" } # Display script version. vbm() { - if [ $OPTION_VERBOSE -eq "true" ]; then - echoerr "$@" + # Usage: vbm "DEBUG:verbose message here" + # Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true". + # Input: + # - OPTION_VERBOSE variable set by processArguments function. (ex: "true", "false") + # - "$@" positional arguments fed to this function. + # Output: stderr + # Script function dependencies: echoerr + # External function dependencies: echo + # Last modified: 2020-04-11T23:57Z + # Last modified by: Steven Baltakatei Sandoval + # License: GPLv3+ + # Ref./Attrib: + + if [ "$OPTION_VERBOSE" = "true" ]; then + FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds. + echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text. fi + + # End function + return 0; # Function finished. } # Verbose message display function. processArguments() { while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0). - echoerr "DEBUG:Starting processArguments while loop." - echoerr "DEBUG:Provided arguments are:""$@" + #echoerr "DEBUG:Starting processArguments while loop." + #echoerr "DEBUG:Provided arguments are:""$*" case "$1" in - --h | --help) showUsage; exit 1;; # Display usage. + -h | --help) showUsage; exit 1;; # Display usage. --version) showVersion; exit 1;; # Show version - --v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode. - --o | --output) if [ -d "$2" ]; then DIROUT1="$2"; fi ;; # Define output directory. + -v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode. + -o | --output) if [ -d "$2" ]; then DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; shift; fi ;; # Define output directory. + -e | --encrypt) OPTION_ENCRYPT="true"; vbm "DEBUG:Encrypted output mode enabled.";; + -r | --recipient) # Add 'age' recipient via public key string + recPubKeys+=("$2"); vbm "pubkey added:""$2"; shift;; + -c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";; *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options. esac shift done } # Argument Processing -checkExecutables() { +timeUntilNextDay(){ + # Desc: Report seconds until next day. + # Output: stdout: integer seconds until next day + # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 + # Usage: timeUntilNextDay + # Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi + local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY + TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. + TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second. + SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second). + if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then + returnState="true"; + elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then + returnState="WARNING_ZERO"; + yell "WARNING:Reported time until next day exactly zero."; + elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then + returnState="WARNING_NEGATIVE"; + yell "WARNING:Reported time until next day is negative."; + fi + + try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report -} # Check that certain executables exist. + #===Determine function return code=== + if [[ "$returnState" = "true" ]]; then + return 0; + elif [[ "$returnState" = "WARNING_ZERO" ]]; then + return 1; + elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then + return 2; + fi +} # Report seconds until next day +timeUntilNextHour(){ + # Desc: Report seconds until next hour + # Output: stdout: integer seconds until next hour + # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 + # Usage: timeUntilNextHour + # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi + local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR + TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second. + TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second. + SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second). + if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then + returnState="true"; + elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then + returnState="WARNING_ZERO"; + yell "WARNING:Reported time until next hour exactly zero."; + elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then + returnState="WARNING_NEGATIVE"; + yell "WARNING:Reported time until next hour is negative."; + fi + try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report + + #===Determine function return code=== + if [[ "$returnState" = "true" ]]; then + return 0; + elif [[ "$returnState" = "WARNING_ZERO" ]]; then + return 1; + elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then + return 2; + fi +} # Report seconds until next hour +dateTimeShort(){ + # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz) + # Usage: dateTimeShort + # Output: stdout: timestamp (ISO-8601, no separators) + local TIME_CURRENT TIME_CURRENT_SHORT + TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. + TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second. + echo "$TIME_CURRENT_SHORT"; +} # Get date&time without separators main() { - processArguments # Process arguments. - checkExecutables "gpspipe" # Confirm that executables necessary to run are available. -} # Main function. + processArguments "$@" # Process arguments. + if [[ "$OPTION_ENCRYPT" = "true" ]]; then # Check if encryption option active. + if checkapp age; then # Check that age is available. + for pubkey in "${recPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message + vbm "DEBUG:Testing pubkey string:$pubkey" + if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then + # Form age recipient string + recipients="$recipients""-r $pubkey "; + vbm "Added pubkey for forming age recipient string:""$pubkey"; + vbm "DEBUG:recipients:""$recipients"; + else + yell "ERROR:Exit code ""$?"". Invalid recipient pubkey string. Exiting."; exit 1; + fi + done + vbm "DEBUG:Finished processing recPubKeys array"; + # Form age command string + CMD_ENCRYPT=" | age ""$recipients "; + CMD_ENCRYPT_SUFFIX=".age"; + else + yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1; + fi + else + CMD_ENCRYPT=""; + CMD_ENCRYPT_SUFFIX=""; + vbm "DEBUG:Encryption not enabled." + fi + if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active + if checkapp gzip; then # Check if gzip available + CMD_COMPRESS=" | gzip "; + CMD_COMPRESS_SUFFIX=".gz"; + else + yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1; + fi + else + CMD_COMPRESS=""; + CMD_COMPRESS_SUFFIX=""; + vbm "DEBUG:Compression not enabled." + fi + + + if checkapp gpspipe && checkdir "$DIROUT"; then + + # # Set script lifespan to end at start of next day + # if ! scriptTTL="$(timeUntilNextDay)"; then + # if [[ "$scriptTTL" -eq 0 ]]; then + # ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout. + # else + # yell "ERROR: timeUntilNextDay exit code $?"; exit 1; + # fi; + # fi; + # Set script lifespan to end at start of next hour + if ! scriptTTL="$(timeUntilNextHour)"; then + if [[ "$scriptTTL" -eq 0 ]]; then + ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout. + else + yell "ERROR: timeUntilNextHour exit code $?"; exit 1; + fi; + fi; + + # Determine buffer lifespan + bufferTTL="60"; + # Record gps data until script lifespan ends + declare debugCounter; debugCounter="0" + while [[ "$SECONDS" -lt "$scriptTTL" ]]; do + ((debugCounter++)) + # Determine output file paths (time is start of buffer period) + FILEOUT_BASENAME="$(dateTimeShort)""--P""$bufferTTL""S..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S + FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; + FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; + FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; + # Define GPS conversion commands + CMD_CONV_NMEA="" + CMD_CONV_GPX=" | gpsbabel -i nmea -f - -o gpx -F - " + CMD_CONV_KML=" | gpsbabel -i nmea -f - -o kml -F - " + # Fill buffer + buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds + # Process and save buffers + CMD_NMEA=" $CMD_CONV_NMEA $CMD_COMPRESS $CMD_ENCRYPT > $DIROUT/$FILEOUT_NMEA"; vbm "DEBUG:CMD_NMEA:$CMD_NMEA" + CMD_GPX=" $CMD_CONV_GPX $CMD_COMPRESS $CMD_ENCRYPT > $DIROUT/$FILEOUT_GPX"; vbm "DEBUG:CMD_GPX:$CMD_GPX" + CMD_KML=" $CMD_CONV_KML $CMD_COMPRESS $CMD_ENCRYPT > $DIROUT/$FILEOUT_KML"; vbm "DEBUG:CMD_KML:$CMD_KML" + echo "buffer" $CMD_NMEA & # Save NMEA format + echo "buffer" $CMD_GPX & # Save GPX format + echo "buffer" $CMD_KML & # Save KML format + vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2; + # Reset buffer and filenames + unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML; + done + fi +} # Main function. +#===END Declare local script functions=== +#==END Define script parameters== +#==BEGIN Perform work and exit== +main "$@" # Run main function. +exit 0; +#==END Perform work and exit== -if [[ -d "$DIROUT1" ]] && command -v "gpspipe" 1>/dev/null 2>/dev/null ; then - while true; do - #echoerr "DEBUG:Starting while loop." - # Update time constants - TIME_CURRENT="$(date --iso-8601=seconds)" ; - #echoerr "DEBUG:TIME_CURRENT is:""$TIME_CURRENT" ; - TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)" - #echoerr "DEBUG:TIME_CURRENT_SHORT is""$TIME_CURRENT_SHORT" - DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ; - #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT" ; - DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ; - #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT_SHORT" ; - DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ; - #echoerr "DEBUG:DATE_TOMORROW is:""$DATE_TOMORROW" ; - TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ; - #echoerr "DEBUG:TIME_NEXT_MIDNIGHT is:""$TIME_NEXT_MIDNIGHT" ; - SECONDS_UNTIL_NEXT_MIDNIGHT="$(( $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT") ))" ; - #echoerr "DEBUG:SECONDS_UNTIL_NEXT_MIDNIGHT is:""$SECONDS_UNTIL_NEXT_MIDNIGHT" ; - if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]; then echoerr "WARNING:Is it exactly midnight?" ; continue; fi ; # Exit loop early if equal to 0 because "timeout 0s" never ends. - if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]; then echoerr "ERROR:Time until midnight error." ; exit 1; fi ; # Exit script if equal to 0 because "timeout 0s" never ends. - - # Update output file names. - DIROUTN="$DIROUT1" ; - FILEOUTN="$DATE_CURRENT_SHORT""..""$(hostname)""_location.nmea" ; - # Append location log until midnight. - timeout "$SECONDS_UNTIL_NEXT_MIDNIGHT""s" gpspipe -r 1>> "$DIROUTN"/"$FILEOUTN" 2>>/dev/null ; # log raw nmea data - done #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ; - -else - echo "$SCRIPT_TIME_SHORT"">gpspipe or $DIROUT1 not found." >> ~/"$SCRIPT_DATE_SHORT"..error.log ; -fi