| 1 | #!/bin/bash |
| 2 | |
| 3 | # Desc: Records gps data until midnight |
| 4 | # Author: Steven Baltakatei Sandoval; License: GPLv3+ |
| 5 | # Usage: bkgpslog --output [output dir] |
| 6 | |
| 7 | #==BEGIN Define script parameters== |
| 8 | PATH="/opt/bktei:$PATH" # Add default baltakatei script install directory to PATH (necessary for other bk scripts) |
| 9 | SCRIPT_HOSTNAME=$(hostname) # Save hostname of system running this script. |
| 10 | SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script. |
| 11 | SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format. |
| 12 | SCRIPT_DATE_SHORT="$(date +%Y%m%d)" # Save current date in ISO-8601 format. |
| 13 | |
| 14 | declare -Ag appRollCall # Associative array for storing app status |
| 15 | declare -Ag fileRollCall # Associative array for storing file status |
| 16 | declare -Ag dirRollCall # Associative array for storing dir status |
| 17 | declare -a recPubKeys # for processArguments function |
| 18 | declare recipients # for main function |
| 19 | |
| 20 | #===BEGIN Declare local script functions=== |
| 21 | checkapp() { |
| 22 | # Desc: If arg is a command, save result in assoc array 'appRollCall' |
| 23 | # Usage: checkapp arg1 arg2 arg3 ... |
| 24 | # Input: global assoc. array 'appRollCall' |
| 25 | # Output: adds/updates key(value) to global assoc array 'appRollCall' |
| 26 | local returnState |
| 27 | #echo "DEBUG:$(date +%S.%N)..Starting checkapp function." |
| 28 | #echo "DEBUG:args: $@" |
| 29 | #echo "DEBUG:returnState:$returnState" |
| 30 | |
| 31 | #===Process Args=== |
| 32 | for arg in "$@"; do |
| 33 | #echo "DEBUG:processing arg:$arg" |
| 34 | if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command |
| 35 | appRollCall[$arg]="true"; |
| 36 | #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]} |
| 37 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi |
| 38 | else |
| 39 | appRollCall[$arg]="false"; returnState="false"; |
| 40 | fi |
| 41 | done |
| 42 | |
| 43 | #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done |
| 44 | #echo "DEBUG:evaluating returnstate. returnState:"$returnState |
| 45 | |
| 46 | #===Determine function return code=== |
| 47 | if [ "$returnState" = "true" ]; then |
| 48 | #echo "DEBUG:checkapp returns true for $arg"; |
| 49 | return 0; |
| 50 | else |
| 51 | #echo "DEBUG:checkapp returns false for $arg"; |
| 52 | return 1; |
| 53 | fi |
| 54 | } # Check that app exists |
| 55 | checkfile() { |
| 56 | # Desc: If arg is a file path, save result in assoc array 'fileRollCall' |
| 57 | # Usage: checkfile arg1 arg2 arg3 ... |
| 58 | # Input: global assoc. array 'fileRollCall' |
| 59 | # Output: adds/updates key(value) to global assoc array 'fileRollCall'; |
| 60 | # Output: returns 0 if app found, 1 otherwise |
| 61 | local returnState |
| 62 | |
| 63 | #===Process Args=== |
| 64 | for arg in "$@"; do |
| 65 | #echo "DEBUG:processing arg:$arg" |
| 66 | if [ -f "$arg" ]; then |
| 67 | fileRollCall["$arg"]="true"; |
| 68 | #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]} |
| 69 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi |
| 70 | else |
| 71 | fileRollCall["$arg"]="false"; returnState="false"; |
| 72 | fi |
| 73 | done |
| 74 | |
| 75 | #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done |
| 76 | #echo "DEBUG:evaluating returnstate. returnState:"$returnState |
| 77 | |
| 78 | #===Determine function return code=== |
| 79 | if [ "$returnState" = "true" ]; then |
| 80 | #echo "DEBUG:checkapp returns true for $arg"; |
| 81 | return 0; |
| 82 | else |
| 83 | #echo "DEBUG:checkapp returns false for $arg"; |
| 84 | return 1; |
| 85 | fi |
| 86 | } # Check that file exists |
| 87 | checkdir() { |
| 88 | # Desc: If arg is a dir path, save result in assoc array 'dirRollCall' |
| 89 | # Usage: checkdir arg1 arg2 arg3 ... |
| 90 | # Input: global assoc. array 'dirRollCall' |
| 91 | # Output: adds/updates key(value) to global assoc array 'dirRollCall'; |
| 92 | # Output: returns 0 if app found, 1 otherwise |
| 93 | local returnState |
| 94 | |
| 95 | #===Process Args=== |
| 96 | for arg in "$@"; do |
| 97 | #echo "DEBUG:processing arg:$arg" |
| 98 | if [ -d "$arg" ]; then |
| 99 | dirRollCall["$arg"]="true"; |
| 100 | #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]} |
| 101 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi |
| 102 | elif [ "$arg" = "" ]; then |
| 103 | dirRollCall["$arg"]="false"; returnState="false"; |
| 104 | else |
| 105 | returnState="false"; |
| 106 | fi |
| 107 | done |
| 108 | |
| 109 | #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done |
| 110 | #echo "DEBUG:evaluating returnstate. returnState:"$returnState |
| 111 | |
| 112 | #===Determine function return code=== |
| 113 | if [ "$returnState" = "true" ]; then |
| 114 | #echo "DEBUG:checkapp returns true for $arg"; |
| 115 | return 0; |
| 116 | else |
| 117 | #echo "DEBUG:checkapp returns false for $arg"; |
| 118 | return 1; |
| 119 | fi |
| 120 | } # Check that dir exists |
| 121 | |
| 122 | # Yell, Die, Try Three-Fingered Claw technique |
| 123 | # Ref/Attrib: https://stackoverflow.com/a/25515370 |
| 124 | yell() { echo "$0: $*" >&2; } |
| 125 | die() { yell "$*"; exit 111; } |
| 126 | try() { "$@" || die "cannot $*"; } |
| 127 | |
| 128 | echoerr() { |
| 129 | echo "$@" 1>&2; # Define stderr echo function. |
| 130 | } # Define stderr message function. |
| 131 | showUsage() { |
| 132 | echoerr "USAGE:" |
| 133 | echoerr " bkgpslog [ options ]" |
| 134 | echoerr |
| 135 | echoerr "OPTIONS:" |
| 136 | echoerr " -h, --help" |
| 137 | echoerr " Display help information." |
| 138 | echoerr |
| 139 | echoerr " --version" |
| 140 | echoerr " Display script version." |
| 141 | echoerr |
| 142 | echoerr " -v, --verbose" |
| 143 | echoerr " Display debugging info." |
| 144 | echoerr |
| 145 | echoerr " -e, --encrypt" |
| 146 | echoerr " Encrypt output." |
| 147 | echoerr |
| 148 | echoerr " -r, --recipient [ pubkey string ]" |
| 149 | echoerr " Specify recipient." |
| 150 | echoerr |
| 151 | echoerr " -o, --output [ directory ]" |
| 152 | echoerr " Specify output directory to save logs." |
| 153 | echoerr |
| 154 | echoerr " -c, --compress" |
| 155 | echoerr " Compress output with gzip (before encryption if enabled)." |
| 156 | echoerr |
| 157 | echoerr "EXAMPLE: (bash script lines)" |
| 158 | echoerr "/bin/bash bkgpslog -e -c \\" |
| 159 | echoerr "-r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \\" |
| 160 | echoerr "-r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \\" |
| 161 | echoerr "-o ~/Sync/Location" |
| 162 | } # Display information on how to use this script. |
| 163 | showVersion() { |
| 164 | echoerr "$SCRIPT_VERSION" |
| 165 | } # Display script version. |
| 166 | vbm() { |
| 167 | # Usage: vbm "DEBUG:verbose message here" |
| 168 | # Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true". |
| 169 | # Input: |
| 170 | # - OPTION_VERBOSE variable set by processArguments function. (ex: "true", "false") |
| 171 | # - "$@" positional arguments fed to this function. |
| 172 | # Output: stderr |
| 173 | # Script function dependencies: echoerr |
| 174 | # External function dependencies: echo |
| 175 | # Last modified: 2020-04-11T23:57Z |
| 176 | # Last modified by: Steven Baltakatei Sandoval |
| 177 | # License: GPLv3+ |
| 178 | # Ref./Attrib: |
| 179 | |
| 180 | if [ "$OPTION_VERBOSE" = "true" ]; then |
| 181 | FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds. |
| 182 | echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text. |
| 183 | fi |
| 184 | |
| 185 | # End function |
| 186 | return 0; # Function finished. |
| 187 | } # Verbose message display function. |
| 188 | processArguments() { |
| 189 | while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0). |
| 190 | #echoerr "DEBUG:Starting processArguments while loop." |
| 191 | #echoerr "DEBUG:Provided arguments are:""$*" |
| 192 | case "$1" in |
| 193 | -h | --help) showUsage; exit 1;; # Display usage. |
| 194 | --version) showVersion; exit 1;; # Show version |
| 195 | -v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode. |
| 196 | -o | --output) if [ -d "$2" ]; then DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; shift; fi ;; # Define output directory. |
| 197 | -e | --encrypt) OPTION_ENCRYPT="true"; vbm "DEBUG:Encrypted output mode enabled.";; |
| 198 | -r | --recipient) # Add 'age' recipient via public key string |
| 199 | recPubKeys+=("$2"); vbm "pubkey added:""$2"; shift;; |
| 200 | -c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";; |
| 201 | *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options. |
| 202 | esac |
| 203 | shift |
| 204 | done |
| 205 | } # Argument Processing |
| 206 | timeUntilNextDay(){ |
| 207 | # Desc: Report seconds until next day. |
| 208 | # Output: stdout: integer seconds until next day |
| 209 | # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 |
| 210 | # Usage: timeUntilNextDay |
| 211 | # Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi |
| 212 | local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY |
| 213 | TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. |
| 214 | TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second. |
| 215 | SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second). |
| 216 | if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then |
| 217 | returnState="true"; |
| 218 | elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then |
| 219 | returnState="WARNING_ZERO"; |
| 220 | yell "WARNING:Reported time until next day exactly zero."; |
| 221 | elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then |
| 222 | returnState="WARNING_NEGATIVE"; |
| 223 | yell "WARNING:Reported time until next day is negative."; |
| 224 | fi |
| 225 | |
| 226 | try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report |
| 227 | |
| 228 | #===Determine function return code=== |
| 229 | if [[ "$returnState" = "true" ]]; then |
| 230 | return 0; |
| 231 | elif [[ "$returnState" = "WARNING_ZERO" ]]; then |
| 232 | return 1; |
| 233 | elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then |
| 234 | return 2; |
| 235 | fi |
| 236 | } # Report seconds until next day |
| 237 | timeUntilNextHour(){ |
| 238 | # Desc: Report seconds until next hour |
| 239 | # Output: stdout: integer seconds until next hour |
| 240 | # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 |
| 241 | # Usage: timeUntilNextHour |
| 242 | # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi |
| 243 | local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR |
| 244 | TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second. |
| 245 | TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second. |
| 246 | SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second). |
| 247 | if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then |
| 248 | returnState="true"; |
| 249 | elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then |
| 250 | returnState="WARNING_ZERO"; |
| 251 | yell "WARNING:Reported time until next hour exactly zero."; |
| 252 | elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then |
| 253 | returnState="WARNING_NEGATIVE"; |
| 254 | yell "WARNING:Reported time until next hour is negative."; |
| 255 | fi |
| 256 | |
| 257 | try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report |
| 258 | |
| 259 | #===Determine function return code=== |
| 260 | if [[ "$returnState" = "true" ]]; then |
| 261 | return 0; |
| 262 | elif [[ "$returnState" = "WARNING_ZERO" ]]; then |
| 263 | return 1; |
| 264 | elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then |
| 265 | return 2; |
| 266 | fi |
| 267 | } # Report seconds until next hour |
| 268 | dateTimeShort(){ |
| 269 | # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz) |
| 270 | # Usage: dateTimeShort |
| 271 | # Output: stdout: timestamp (ISO-8601, no separators) |
| 272 | local TIME_CURRENT TIME_CURRENT_SHORT |
| 273 | TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. |
| 274 | TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second. |
| 275 | echo "$TIME_CURRENT_SHORT"; |
| 276 | } # Get date&time without separators |
| 277 | main() { |
| 278 | processArguments "$@" # Process arguments. |
| 279 | if [[ "$OPTION_ENCRYPT" = "true" ]]; then # Check if encryption option active. |
| 280 | if checkapp age; then # Check that age is available. |
| 281 | for pubkey in "${recPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message |
| 282 | vbm "DEBUG:Testing pubkey string:$pubkey" |
| 283 | if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then |
| 284 | # Form age recipient string |
| 285 | recipients="$recipients""-r $pubkey "; |
| 286 | vbm "Added pubkey for forming age recipient string:""$pubkey"; |
| 287 | vbm "DEBUG:recipients:""$recipients"; |
| 288 | else |
| 289 | yell "ERROR:Exit code ""$?"". Invalid recipient pubkey string. Exiting."; exit 1; |
| 290 | fi |
| 291 | done |
| 292 | vbm "DEBUG:Finished processing recPubKeys array"; |
| 293 | # Form age command string |
| 294 | CMD_ENCRYPT="age ""$recipients "; |
| 295 | CMD_ENCRYPT_SUFFIX=".age"; |
| 296 | else |
| 297 | yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1; |
| 298 | fi |
| 299 | else |
| 300 | CMD_ENCRYPT="tee /dev/null "; |
| 301 | CMD_ENCRYPT_SUFFIX=""; |
| 302 | vbm "DEBUG:Encryption not enabled." |
| 303 | fi |
| 304 | |
| 305 | if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active |
| 306 | if checkapp gzip; then # Check if gzip available |
| 307 | CMD_COMPRESS="gzip "; |
| 308 | CMD_COMPRESS_SUFFIX=".gz"; |
| 309 | else |
| 310 | yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1; |
| 311 | fi |
| 312 | else |
| 313 | CMD_COMPRESS="tee /dev/null "; |
| 314 | CMD_COMPRESS_SUFFIX=""; |
| 315 | vbm "DEBUG:Compression not enabled." |
| 316 | fi |
| 317 | |
| 318 | |
| 319 | if checkapp gpspipe && checkdir "$DIROUT"; then |
| 320 | |
| 321 | # # Set script lifespan to end at start of next day |
| 322 | # if ! scriptTTL="$(timeUntilNextDay)"; then |
| 323 | # if [[ "$scriptTTL" -eq 0 ]]; then |
| 324 | # ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout. |
| 325 | # else |
| 326 | # yell "ERROR: timeUntilNextDay exit code $?"; exit 1; |
| 327 | # fi; |
| 328 | # fi; |
| 329 | |
| 330 | # Set script lifespan to end at start of next hour |
| 331 | if ! scriptTTL="$(timeUntilNextHour)"; then |
| 332 | if [[ "$scriptTTL" -eq 0 ]]; then |
| 333 | ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout. |
| 334 | else |
| 335 | yell "ERROR: timeUntilNextHour exit code $?"; exit 1; |
| 336 | fi; |
| 337 | fi; |
| 338 | |
| 339 | # Determine buffer lifespan |
| 340 | bufferTTL="60"; |
| 341 | |
| 342 | # Record gps data until script lifespan ends |
| 343 | declare debugCounter; debugCounter="0" |
| 344 | while [[ "$SECONDS" -lt "$scriptTTL" ]]; do |
| 345 | ((debugCounter++)) |
| 346 | # Determine output file paths (time is start of buffer period) |
| 347 | FILEOUT_BASENAME="$(dateTimeShort)""--P""$bufferTTL""S..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S |
| 348 | FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; |
| 349 | FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; |
| 350 | FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" ; |
| 351 | # Define GPS conversion commands |
| 352 | CMD_CONV_NMEA="tee /dev/null " |
| 353 | CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " |
| 354 | CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " |
| 355 | # Fill buffer |
| 356 | buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds |
| 357 | # Execute processing and save command string |
| 358 | echo "$buffer" | $CMD_CONV_NMEA | $CMD_COMPRESS | $CMD_ENCRYPT > "$DIROUT"/"$FILEOUT_NMEA" & # Save NMEA format |
| 359 | echo "$buffer" | $CMD_CONV_GPX | $CMD_COMPRESS | $CMD_ENCRYPT > "$DIROUT"/"$FILEOUT_GPX" & # Save GPX format |
| 360 | echo "$buffer" | $CMD_CONV_KML | $CMD_COMPRESS | $CMD_ENCRYPT > "$DIROUT"/"$FILEOUT_KML" & # Save KML format |
| 361 | vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2; |
| 362 | # Reset buffer and filenames |
| 363 | unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML; |
| 364 | done |
| 365 | fi |
| 366 | } # Main function. |
| 367 | #===END Declare local script functions=== |
| 368 | #==END Define script parameters== |
| 369 | |
| 370 | |
| 371 | #==BEGIN Perform work and exit== |
| 372 | main "$@" # Run main function. |
| 373 | exit 0; |
| 374 | #==END Perform work and exit== |
| 375 | |
| 376 | |
| 377 | |
| 378 | #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ; |