723960f1d444e3fd63df7424f3bb010a6f0b67fa
[EVA-2020-02.git] / exec / bkgpslog
1 #!/bin/bash
2
3 # Desc: Records gps data until midnight
4 # Author: Steven Baltakatei Sandoval; License: GPLv3+
5 # Usage: bkgpslog -o [output dir]
6
7 #==BEGIN Define script parameters==
8 ## Logging Behavior parameters
9 BUFFER_TTL="60"; # time between file writes
10 SCRIPT_TTL="day"; # (day|hour)
11 #### TZ="UTC"; export TZ; # Default time zone; overridden by '--time-zone=[str]' option
12 DIR_TMP_DEFAULT="/dev/shm"; # Default parent of working directory
13
14 SCRIPT_TIME_START=$(date +%Y%m%dT%H%M%S.%N);
15 PATH="$HOME/.local/bin:$PATH"; # Add "$(systemd-path user-binaries)" path in case apps saved there
16 SCRIPT_HOSTNAME=$(hostname); # Save hostname of system running this script.
17 SCRIPT_VERSION="0.2.2"; # Define version of script.
18 SCRIPT_NAME="bkgpslog"; # Define basename of script file.
19 SCRIPT_URL="https://gitlab.com/baltakatei/ninfacyzga-01"; # Define wesite hosting this script.
20 AGE_VERSION="1.0.0-beta2"; # Define version of age (encryption program)
21 AGE_URL="https://github.com/FiloSottile/age/releases/tag/v1.0.0-beta2"; # Define website hosting age.
22
23 declare -Ag appRollCall # Associative array for storing app status
24 declare -Ag fileRollCall # Associative array for storing file status
25 declare -Ag dirRollCall # Associative array for storing dir status
26 declare -a recPubKeys # for processArguments function
27 declare recipients # for main function
28
29 ## Initialize variables
30 OPTION_VERBOSE=""; OPTION_ENCRYPT=""; OPTION_COMPRESS=""; OPTION_TMPDIR="";
31
32 #===BEGIN Declare local script functions===
33 checkapp() {
34 # Desc: If arg is a command, save result in assoc array 'appRollCall'
35 # Usage: checkapp arg1 arg2 arg3 ...
36 # Input: global assoc. array 'appRollCall'
37 # Output: adds/updates key(value) to global assoc array 'appRollCall'
38 local returnState
39 #echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
40 #echo "DEBUG:args: $@"
41 #echo "DEBUG:returnState:$returnState"
42
43 #===Process Args===
44 for arg in "$@"; do
45 #echo "DEBUG:processing arg:$arg"
46 if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
47 appRollCall[$arg]="true";
48 #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
49 if ! [ "$returnState" = "false" ]; then returnState="true"; fi
50 else
51 appRollCall[$arg]="false"; returnState="false";
52 fi
53 done
54
55 #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
56 #echo "DEBUG:evaluating returnstate. returnState:"$returnState
57
58 #===Determine function return code===
59 if [ "$returnState" = "true" ]; then
60 #echo "DEBUG:checkapp returns true for $arg";
61 return 0;
62 else
63 #echo "DEBUG:checkapp returns false for $arg";
64 return 1;
65 fi
66 } # Check that app exists
67 checkfile() {
68 # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
69 # Usage: checkfile arg1 arg2 arg3 ...
70 # Input: global assoc. array 'fileRollCall'
71 # Output: adds/updates key(value) to global assoc array 'fileRollCall';
72 # Output: returns 0 if app found, 1 otherwise
73 local returnState
74
75 #===Process Args===
76 for arg in "$@"; do
77 #echo "DEBUG:processing arg:$arg"
78 if [ -f "$arg" ]; then
79 fileRollCall["$arg"]="true";
80 #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
81 if ! [ "$returnState" = "false" ]; then returnState="true"; fi
82 else
83 fileRollCall["$arg"]="false"; returnState="false";
84 fi
85 done
86
87 #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
88 #echo "DEBUG:evaluating returnstate. returnState:"$returnState
89
90 #===Determine function return code===
91 if [ "$returnState" = "true" ]; then
92 #echo "DEBUG:checkapp returns true for $arg";
93 return 0;
94 else
95 #echo "DEBUG:checkapp returns false for $arg";
96 return 1;
97 fi
98 } # Check that file exists
99 checkdir() {
100 # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
101 # Usage: checkdir arg1 arg2 arg3 ...
102 # Input: global assoc. array 'dirRollCall'
103 # Output: adds/updates key(value) to global assoc array 'dirRollCall';
104 # Output: returns 0 if app found, 1 otherwise
105 local returnState
106
107 #===Process Args===
108 for arg in "$@"; do
109 #echo "DEBUG:processing arg:$arg"
110 if [ -d "$arg" ]; then
111 dirRollCall["$arg"]="true";
112 #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
113 if ! [ "$returnState" = "false" ]; then returnState="true"; fi
114 elif [ "$arg" = "" ]; then
115 dirRollCall["$arg"]="false"; returnState="false";
116 else
117 returnState="false";
118 fi
119 done
120
121 #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
122 #echo "DEBUG:evaluating returnstate. returnState:"$returnState
123
124 #===Determine function return code===
125 if [ "$returnState" = "true" ]; then
126 #echo "DEBUG:checkapp returns true for $arg";
127 return 0;
128 else
129 #echo "DEBUG:checkapp returns false for $arg";
130 return 1;
131 fi
132 } # Check that dir exists
133
134 # Yell, Die, Try Three-Fingered Claw technique
135 # Ref/Attrib: https://stackoverflow.com/a/25515370
136 yell() { echo "$0: $*" >&2; }
137 die() { yell "$*"; exit 111; }
138 try() { "$@" || die "cannot $*"; }
139
140 echoerr() {
141 echo "$@" 1>&2; # Define stderr echo function.
142 } # Define stderr message function.
143 showUsage() {
144 echoerr "USAGE:"
145 echoerr " bkgpslog [ options ]"
146 echoerr
147 echoerr "OPTIONS:"
148 echoerr " -h, --help"
149 echoerr " Display help information."
150 echoerr
151 echoerr " --version"
152 echoerr " Display script version."
153 echoerr
154 echoerr " -v, --verbose"
155 echoerr " Display debugging info."
156 echoerr
157 echoerr " -e, --encrypt"
158 echoerr " Encrypt output."
159 echoerr
160 echoerr " -r, --recipient [ pubkey string ]"
161 echoerr " Specify recipient. May be age or ssh pubkey."
162 echoerr " See https://github.com/FiloSottile/age"
163 echoerr
164 echoerr " -o, --output [ directory ]"
165 echoerr " Specify output directory to save logs."
166 echoerr
167 echoerr " -c, --compress"
168 echoerr " Compress output with gzip (before encryption if enabled)."
169 echoerr
170 echoerr " -z, --time-zone"
171 echoerr " Specify time zone. (ex: \"America/New_York\")"
172 echoerr
173 echoerr " -t, --temp-dir"
174 echoerr " Specify parent directory for temporary working directory."
175 echoerr " Default: \"/dev/shm\""
176 echoerr
177 echoerr "EXAMPLE: (bash script lines)"
178 echoerr "/bin/bash bkgpslog -e -c \\"
179 echoerr "-r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 \\"
180 echoerr "-r age1ala848kqrvxc88rzaauc6vc5v0fqrvef9dxyk79m0vjea3hagclswu0lgq \\"
181 echoerr "-o ~/Sync/Location"
182 } # Display information on how to use this script.
183 showVersion() {
184 echoerr "$SCRIPT_VERSION"
185 } # Display script version.
186 vbm() {
187 # Usage: vbm "DEBUG:verbose message here"
188 # Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true".
189 # Input:
190 # - OPTION_VERBOSE variable set by processArguments function. (ex: "true", "false")
191 # - "$@" positional arguments fed to this function.
192 # Output: stderr
193 # Script function dependencies: echoerr
194 # External function dependencies: echo
195 # Last modified: 2020-04-11T23:57Z
196 # Last modified by: Steven Baltakatei Sandoval
197 # License: GPLv3+
198 # Ref./Attrib:
199
200 if [ "$OPTION_VERBOSE" = "true" ]; then
201 FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds.
202 echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text.
203 fi
204
205 # End function
206 return 0; # Function finished.
207 } # Verbose message display function.
208 processArguments() {
209 while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
210 #echoerr "DEBUG:Starting processArguments while loop."
211 #echoerr "DEBUG:Provided arguments are:""$*"
212 case "$1" in
213 -h | --help) showUsage; exit 1;; # Display usage.
214 --version) showVersion; exit 1;; # Show version
215 -v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
216 -o | --output) if [ -d "$2" ]; then DIR_OUT="$2"; vbm "DEBUG:DIR_OUT:$DIR_OUT"; shift; fi ;; # Define output directory.
217 -e | --encrypt) OPTION_ENCRYPT="true"; vbm "DEBUG:Encrypted output mode enabled.";;
218 -r | --recipient) # Add 'age' recipient via public key string
219 recPubKeys+=("$2"); vbm "STATUS:pubkey added:""$2"; shift;;
220 -c | --compress) OPTION_COMPRESS="true"; vbm "DEBUG:Compressed output mode enabled.";;
221 -z | --time-zone) try setTimeZoneEV "$2"; shift;;
222 -t | --temp-dir) OPTION_TMPDIR="true" && TMP_DIR_PRIORITY="$2"; shift;;
223 *) echoerr "ERROR: Unrecognized argument: $1"; echoerr "STATUS:All arguments:$*"; exit 1;; # Handle unrecognized options.
224 esac
225 shift
226 done
227 } # Argument Processing
228 setTimeZoneEV(){
229 # Desc: Set time zone environment variable TZ
230 # Usage: setTimeZoneEV arg1
231 # Input: arg1: 'date'-compatible timezone string (ex: "America/New_York")
232 # TZDIR env var (optional; default: "/usr/share/zoneinfo")
233 # Output: exports TZ
234 # exit code 0 on success
235 # exit code 1 on incorrect number of arguments
236 # exit code 2 if unable to validate arg1
237 # Depends: yell, printenv, bash 5
238 # Tested on: Debian 10
239 ARG1="$1"
240 local tzDir returnState
241 if ! [[ $# -eq 1 ]]; then
242 yell "ERROR:Invalid argument count.";
243 return 1;
244 fi
245
246 # Read TZDIR env var if available
247 if printenv TZDIR 1>/dev/null 2>&1; then
248 tzDir="$(printenv TZDIR)";
249 else
250 tzDir="/usr/share/zoneinfo";
251 fi
252
253 # Validate TZ string
254 if ! [[ -f "$tzDir"/"$ARG1" ]]; then
255 yell "ERROR:Invalid time zone argument.";
256 return 2;
257 else
258 # Export ARG1 as TZ environment variable
259 TZ="$ARG1" && export TZ && returnState="true";
260 fi
261
262 # Determine function return code
263 if [ "$returnState" = "true" ]; then
264 return 0;
265 fi
266 } # Exports TZ environment variable
267 timeUntilNextDay(){
268 # Desc: Report seconds until next day.
269 # Version: 1.0.0
270 # Output: stdout: integer seconds until next day
271 # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
272 # Usage: timeUntilNextDay
273 # Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi
274 # Depends: date 8, echo 8, yell, try
275
276 local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY
277
278 TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
279 TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second.
280 SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
281 if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then
282 returnState="true";
283 elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then
284 returnState="warning_zero";
285 yell "WARNING:Reported time until next day exactly zero.";
286 elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then
287 returnState="warning_negative";
288 yell "WARNING:Reported time until next day is negative.";
289 fi
290
291 try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report
292
293 # Determine function return code
294 if [[ "$returnState" = "true" ]]; then
295 return 0;
296 elif [[ "$returnState" = "warning_zero" ]]; then
297 return 1;
298 elif [[ "$returnState" = "warning_negative" ]]; then
299 return 2;
300 fi
301 } # Report seconds until next day
302 timeUntilNextHour(){
303 # Desc: Report seconds until next hour
304 # Version 1.0.0
305 # Output: stdout: integer seconds until next hour
306 # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
307 # Usage: timeUntilNextHour
308 # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi
309
310 local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR
311 TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second.
312 TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second.
313 SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second).
314 if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then
315 returnState="true";
316 elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then
317 returnState="warning_zero";
318 yell "WARNING:Reported time until next hour exactly zero.";
319 elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then
320 returnState="warning_negative";
321 yell "WARNING:Reported time until next hour is negative.";
322 fi
323
324 try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report
325
326 # Determine function return code
327 if [[ "$returnState" = "true" ]]; then
328 return 0;
329 elif [[ "$returnState" = "warning_zero" ]]; then
330 return 1;
331 elif [[ "$returnState" = "warning_negative" ]]; then
332 return 2;
333 fi
334 } # Report seconds until next hour
335 dateTimeShort(){
336 # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
337 # Usage: dateTimeShort
338 # Output: stdout: timestamp (ISO-8601, no separators)
339 local TIME_CURRENT TIME_CURRENT_SHORT
340 TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
341 TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
342 echo "$TIME_CURRENT_SHORT";
343 } # Get YYYYmmddTHHMMSS±zzzz
344 dateShort(){
345 # Desc: Date without separators (YYYYmmdd)
346 # Usage: dateShort
347 # Output: stdout: date (ISO-8601, no separators)
348 local TIME_CURRENT DATE_CURRENT_SHORT
349 TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
350 DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)"; # Produce separator-less current date with resolution 1 day.
351 echo "$DATE_CURRENT_SHORT";
352 } # Get YYYYmmdd
353 timeDuration(){
354 # Desc: Given seconds, output ISO-8601 duration string
355 # Ref/Attrib: ISO-8601:2004(E), §4.4.4.2 Representations of time intervals by duration and context information
356 # Note: "1 month" ("P1M") is assumed to be "30 days" (see ISO-8601:2004(E), §2.2.1.2)
357 # Usage: timeDuration [1:seconds] ([2:precision])
358 # Version: 1.0.3
359 # Input: arg1: seconds as base 10 integer >= 0 (ex: 3601)
360 # arg2: precision level (optional; default=2)
361 # Output: stdout: ISO-8601 duration string (ex: "P1H1S", "P2Y10M15DT10H30M20S")
362 # exit code 0: success
363 # exit code 1: error_input
364 # exit code 2: error_unknown
365 # Example: 'timeDuration 111111 3' yields 'P1DT6H51M'
366 # Depends: date 8 (gnucoreutils), yell,
367 local returnState argSeconds argPrecision remainder precision witherPrecision
368 local fullYears fullMonths fullDays fullHours fullMinutes fullSeconds
369 local displayYears displayMonths displayDays displayHours displayMinutes displaySeconds
370 local hasYears hasMonths hasDays hasHours hasMinutes hasSeconds
371
372 argSeconds="$1"; # read arg1 (seconds)
373 argPrecision="$2"; # read arg2 (precision)
374 precision=2; # set default precision
375
376 # Check that between one and two arguments is supplied
377 if ! { [[ $# -ge 1 ]] && [[ $# -le 2 ]]; }; then
378 yell "ERROR:Invalid number of arguments:$# . Exiting.";
379 returnState="error_input"; fi
380
381 # Check that argSeconds provided
382 if [[ $# -ge 1 ]]; then
383 ## Check that argSeconds is a positive integer
384 if [[ "$argSeconds" =~ ^[[:digit:]]+$ ]]; then
385 :
386 else
387 yell "ERROR:argSeconds not a digit.";
388 returnState="error_input";
389 fi
390 else
391 yell "ERROR:No argument provided. Exiting.";
392 exit 1;
393 fi
394
395 # Consider whether argPrecision was provided
396 if [[ $# -eq 2 ]]; then
397 # Check that argPrecision is a positive integer
398 if [[ "$argPrecision" =~ ^[[:digit:]]+$ ]] && [[ "$argPrecision" -gt 0 ]]; then
399 precision="$argPrecision";
400 else
401 yell "ERROR:argPrecision not a positive integer. (is $argPrecision ). Leaving early.";
402 returnState="error_input";
403 fi;
404 else
405 :
406 fi;
407
408 remainder="$argSeconds" ; # seconds
409 ## Calculate full years Y, update remainder
410 fullYears=$(( remainder / (365*24*60*60) ));
411 remainder=$(( remainder - (fullYears*365*24*60*60) ));
412 ## Calculate full months M, update remainder
413 fullMonths=$(( remainder / (30*24*60*60) ));
414 remainder=$(( remainder - (fullMonths*30*24*60*60) ));
415 ## Calculate full days D, update remainder
416 fullDays=$(( remainder / (24*60*60) ));
417 remainder=$(( remainder - (fullDays*24*60*60) ));
418 ## Calculate full hours H, update remainder
419 fullHours=$(( remainder / (60*60) ));
420 remainder=$(( remainder - (fullHours*60*60) ));
421 ## Calculate full minutes M, update remainder
422 fullMinutes=$(( remainder / (60) ));
423 remainder=$(( remainder - (fullMinutes*60) ));
424 ## Calculate full seconds S, update remainder
425 fullSeconds=$(( remainder / (1) ));
426 remainder=$(( remainder - (remainder*1) ));
427 ## Check which fields filled
428 if [[ $fullYears -gt 0 ]]; then hasYears="true"; else hasYears="false"; fi
429 if [[ $fullMonths -gt 0 ]]; then hasMonths="true"; else hasMonths="false"; fi
430 if [[ $fullDays -gt 0 ]]; then hasDays="true"; else hasDays="false"; fi
431 if [[ $fullHours -gt 0 ]]; then hasHours="true"; else hasHours="false"; fi
432 if [[ $fullMinutes -gt 0 ]]; then hasMinutes="true"; else hasMinutes="false"; fi
433 if [[ $fullSeconds -gt 0 ]]; then hasSeconds="true"; else hasSeconds="false"; fi
434
435 ## Determine which fields to display (see ISO-8601:2004 §4.4.3.2)
436 witherPrecision="false"
437
438 ### Years
439 if $hasYears && [[ $precision -gt 0 ]]; then
440 displayYears="true";
441 witherPrecision="true";
442 else
443 displayYears="false";
444 fi;
445 if $witherPrecision; then ((precision--)); fi;
446
447 ### Months
448 if $hasMonths && [[ $precision -gt 0 ]]; then
449 displayMonths="true";
450 witherPrecision="true";
451 else
452 displayMonths="false";
453 fi;
454 if $witherPrecision && [[ $precision -gt 0 ]]; then
455 displayMonths="true";
456 fi;
457 if $witherPrecision; then ((precision--)); fi;
458
459 ### Days
460 if $hasDays && [[ $precision -gt 0 ]]; then
461 displayDays="true";
462 witherPrecision="true";
463 else
464 displayDays="false";
465 fi;
466 if $witherPrecision && [[ $precision -gt 0 ]]; then
467 displayDays="true";
468 fi;
469 if $witherPrecision; then ((precision--)); fi;
470
471 ### Hours
472 if $hasHours && [[ $precision -gt 0 ]]; then
473 displayHours="true";
474 witherPrecision="true";
475 else
476 displayHours="false";
477 fi;
478 if $witherPrecision && [[ $precision -gt 0 ]]; then
479 displayHours="true";
480 fi;
481 if $witherPrecision; then ((precision--)); fi;
482
483 ### Minutes
484 if $hasMinutes && [[ $precision -gt 0 ]]; then
485 displayMinutes="true";
486 witherPrecision="true";
487 else
488 displayMinutes="false";
489 fi;
490 if $witherPrecision && [[ $precision -gt 0 ]]; then
491 displayMinutes="true";
492 fi;
493 if $witherPrecision; then ((precision--)); fi;
494
495 ### Seconds
496
497 if $hasSeconds && [[ $precision -gt 0 ]]; then
498 displaySeconds="true";
499 witherPrecision="true";
500 else
501 displaySeconds="false";
502 fi;
503 if $witherPrecision && [[ $precision -gt 0 ]]; then
504 displaySeconds="true";
505 fi;
506 if $witherPrecision; then ((precision--)); fi;
507
508 ## Determine whether or not the "T" separator is needed to separate date and time elements
509 if ( $displayHours || $displayMinutes || $displaySeconds); then
510 displayDateTime="true"; else displayDateTime="false"; fi
511
512 ## Construct duration output string
513 OUTPUT="P"
514 if $displayYears; then
515 OUTPUT=$OUTPUT$fullYears"Y"; fi
516 if $displayMonths; then
517 OUTPUT=$OUTPUT$fullMonths"M"; fi
518 if $displayDays; then
519 OUTPUT=$OUTPUT$fullDays"D"; fi
520 if $displayDateTime; then
521 OUTPUT=$OUTPUT"T"; fi
522 if $displayHours; then
523 OUTPUT=$OUTPUT$fullHours"H"; fi
524 if $displayMinutes; then
525 OUTPUT=$OUTPUT$fullMinutes"M"; fi
526 if $displaySeconds; then
527 OUTPUT=$OUTPUT$fullSeconds"S"; fi
528
529 ## Output duration string to stdout
530 echo "$OUTPUT" && returnState="true";
531
532 #===Determine function return code===
533 if [ "$returnState" = "true" ]; then
534 return 0;
535 elif [ "$returnState" = "error_input" ]; then
536 yell "ERROR:input";
537 return 1;
538 else
539 yell "ERROR:Unknown";
540 return 2;
541 fi
542
543 } # Get duration (ex: PT10M4S )
544 displayMissing() {
545 # Desc: Displays missing apps, files, and dirs
546 # Usage: displayMissing
547 # Input: associative arrays: appRollCall, fileRollCall, dirRollCall
548 # Output: stderr messages
549 #==BEGIN Display errors==
550 #===BEGIN Display Missing Apps===
551 missingApps="Missing apps :"
552 #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
553 for key in "${!appRollCall[@]}"; do
554 value="${appRollCall[$key]}"
555 if [ "$value" = "false" ]; then
556 #echo "DEBUG:Missing apps: $key => $value";
557 missingApps="$missingApps""$key "
558 appMissing="true"
559 fi
560 done
561 if [ "$appMissing" = "true" ]; then # Only indicate if an app is missing.
562 echo "$missingApps" 1>&2;
563 fi
564 #===END Display Missing Apps===
565
566 #===BEGIN Display Missing Files===
567 missingFiles="Missing files:"
568 #for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done
569 for key in "${!fileRollCall[@]}"; do
570 value="${fileRollCall[$key]}"
571 if [ "$value" = "false" ]; then
572 #echo "DEBUG:Missing files: $key => $value";
573 missingFiles="$missingFiles""$key "
574 fileMissing="true"
575 fi
576 done
577 if [ "$fileMissing" = "true" ]; then # Only indicate if an app is missing.
578 echo "$missingFiles" 1>&2;
579 fi
580 #===END Display Missing Files===
581
582 #===BEGIN Display Missing Directories===
583 missingDirs="Missing dirs:"
584 #for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done
585 for key in "${!dirRollCall[@]}"; do
586 value="${dirRollCall[$key]}"
587 if [ "$value" = "false" ]; then
588 #echo "DEBUG:Missing dirs: $key => $value";
589 missingDirs="$missingDirs""$key "
590 dirMissing="true"
591 fi
592 done
593 if [ "$dirMissing" = "true" ]; then # Only indicate if an dir is missing.
594 echo "$missingDirs" 1>&2;
595 fi
596 #===END Display Missing Directories===
597
598 #==END Display errors==
599 } # Display missing apps, files, dirs
600 setScriptTTL() {
601 #Desc: Sets script TTL
602 #Usage: setScriptTTL arg1
603 #Input: arg1: "day" or "hour"
604 #Output: scriptTTL
605 #Depends: timeUntilNextHour or timeUntilNextDay
606 local ARG1
607 ARG1="$1"
608 if [[ "$ARG1" = "day" ]]; then
609 # Set script lifespan to end at start of next day
610 if ! scriptTTL="$(timeUntilNextDay)"; then
611 if [[ "$scriptTTL" -eq 0 ]]; then
612 ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
613 else
614 yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
615 fi;
616 fi;
617 elif [[ "$ARG1" = "hour" ]]; then
618 # Set script lifespan to end at start of next hour
619 if ! scriptTTL="$(timeUntilNextHour)"; then
620 if [[ "$scriptTTL" -eq 0 ]]; then
621 ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
622 else
623 yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
624 fi;
625 fi;
626 else
627 yell "ERROR:Invalid argument for setScriptTTL function."; exit 1;
628 fi
629 } # Seconds until next (day|hour).
630 checkMakeTar() {
631 # Desc: Checks that a valid tar archive exists, creates one otherwise
632 # Usage: checkMakeTar [ path ]
633 # Version: 1.0.1
634 # Input: arg1: path of tar archive
635 # Output: exit code 0 : tar readable
636 # exit code 1 : tar missing; created
637 # exit code 2 : tar not readable; moved; replaced
638 # Depends: try, tar, date
639 local PATH_TAR returnFlag0 returnFlag1 returnFlag2
640 PATH_TAR="$1"
641
642 # Check if file is a valid tar archive
643 if tar --list --file="$PATH_TAR" 1>/dev/null 2>&1; then
644 ## T1: return success
645 returnFlag0="tar valid";
646 else
647 ## F1: Check if file exists
648 if [[ -f "$PATH_TAR" ]]; then
649 ### T: Rename file
650 try mv "$PATH_TAR" "$PATH_TAR""--broken--""$(date +%Y%m%dT%H%M%S)" && \
651 returnFlag1="tar moved";
652 else
653 ### F: -
654 :
655 fi
656 ## F2: Create tar archive, return 0
657 try tar --create --file="$PATH_TAR" --files-from=/dev/null && \
658 returnFlag2="tar created";
659 fi
660
661 # Determine function return code
662 if [[ "$returnFlag0" = "tar valid" ]]; then
663 return 0;
664 elif [[ "$returnFlag2" = "tar created" ]] && ! [[ "$returnFlag1" = "tar moved" ]]; then
665 return 1; # tar missing so created
666 elif [[ "$returnFlag2" = "tar created" ]] && [[ "$returnFlag1" = "tar moved" ]]; then
667 return 2; # tar not readable so moved; replaced
668 fi
669 } # checks if arg1 is tar; creates one otherwise
670 appendArgTar(){
671 # Desc: Writes first argument to temporary file with arguments as options, then appends file to tar
672 # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...)
673 # Input: arg1: data to be written
674 # arg2: file name of file to be inserted into tar
675 # arg3: tar archive path (must exist first)
676 # arg4: temporary working dir
677 # arg5+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ")
678 # Output: file written to disk
679 # Example: decrypt multiple large files in parallel
680 # appendArgTar "$(cat /tmp/largefile1.gpg)" "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" &
681 # appendArgTar "$(cat /tmp/largefile2.gpg)" "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" &
682 # appendArgTar "$(cat /tmp/largefile3.gpg)" "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" &
683 # Depends: bash 5
684
685 # Save function name
686 local FN="${FUNCNAME[0]}"
687 yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
688
689 # Set file name
690 if ! [ -z "$2" ]; then FILENAME="$2"; else yell "ERROR:$FN:Not enough arguments."; exit 1; fi
691
692 # Check tar path is a file
693 if [ -f "$3" ]; then TAR_PATH="$3"; else yell "ERROR:$FN:Tar archive arg not a file."; exit 1; fi
694
695 # Check temp dir arg
696 if ! [ -z "$4" ]; then TMP_DIR="$4"; else yell "ERROR:$FN:No temporary working dir set."; exit 1; fi
697
698 # Set command strings
699 if ! [ -z "$5" ]; then CMD1="$5"; else CMD1="tee /dev/null "; fi # command string 1
700 if ! [ -z "$6" ]; then CMD2="$6"; else CMD2="tee /dev/null "; fi # command string 2
701 if ! [ -z "$7" ]; then CMD3="$7"; else CMD3="tee /dev/null "; fi # command string 3
702 if ! [ -z "$8" ]; then CMD4="$8"; else CMD4="tee /dev/null "; fi # command string 4
703
704 # Debug
705 yell "STATUS:$FN:CMD1:$CMD1"
706 yell "STATUS:$FN:CMD2:$CMD2"
707 yell "STATUS:$FN:CMD3:$CMD3"
708 yell "STATUS:$FN:CMD4:$CMD4"
709 yell "STATUS:$FN:FILENAME:$FILENAME"
710 yell "STATUS:$FN:TAR_PATH:$TAR_PATH"
711 yell "STATUS:$FN:TMP_DIR:$TMP_DIR"
712 # Write to temporary working dir
713 echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME";
714
715 # Append to tar
716 try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME";
717 yell "DEBUG:STATUS:$FN:Finished appendArgTar()."
718 } # Append Bash var to file appended to Tar archive
719 magicWriteVersion() {
720 # Desc: Appends time-stamped VERSION to PATHOUT_TAR
721 # Usage: magicWriteVersion
722 # Version: 0.1.0
723 # Input: CONTENT_VERSION, FILEOUT_VERSION, PATHOUT_TAR, DIR_TMP
724 # Input: SCRIPT_VERSION, SCRIPT_URL, AGE_VERSION, AGE_URL, SCRIPT_HOSTNAME
725 # Output: appends tar PATHOUT_TAR
726 # Depends: dateTimeShort, appendArgTar
727 local CONTENT_VERSION pubKeyIndex
728
729 # Set VERSION file name
730 FILEOUT_VERSION="$(dateTimeShort)..VERSION";
731
732 # Gather VERSION data in CONTENT_VERSION
733 CONTENT_VERSION="SCRIPT_VERSION=$SCRIPT_VERSION";
734 #CONTENT_VERSION="$CONTENT_VERSION""\n";
735 CONTENT_VERSION="$CONTENT_VERSION""\n""SCRIPT_NAME=$SCRIPT_NAME";
736 CONTENT_VERSION="$CONTENT_VERSION""\n""SCRIPT_URL=$SCRIPT_URL";
737 CONTENT_VERSION="$CONTENT_VERSION""\n""AGE_VERSION=$AGE_VERSION";
738 CONTENT_VERSION="$CONTENT_VERSION""\n""AGE_URL=$AGE_URL";
739 CONTENT_VERSION="$CONTENT_VERSION""\n""DATE=$(date --iso-8601=seconds)";
740 CONTENT_VERSION="$CONTENT_VERSION""\n""HOSTNAME=$SCRIPT_HOSTNAME";
741 ## Add list of recipient pubkeys
742 for pubkey in "${recPubKeysValid[@]}"; do
743 ((pubKeyIndex++))
744 CONTENT_VERSION="$CONTENT_VERSION""\n""PUBKEY_$pubKeyIndex=$pubkey";
745 done
746 ## Process newline escapes
747 CONTENT_VERSION="$(echo -e "$CONTENT_VERSION")"
748
749 # Write CONTENT_VERSION as file FILEOUT_VERSION and write-append to PATHOUT_TAR
750 appendArgTar "$CONTENT_VERSION" "$FILEOUT_VERSION" "$PATHOUT_TAR" "$DIR_TMP";
751
752 } # bkgpslog: write version data to PATHOUT_TAR via appendArgTar()
753 magicWriteBuffer() {
754 # Desc: bkgpslog-specific meta function for writing data to DIR_TMP then appending each file to PATHOUT_TAR
755 # Inputs: PATHOUT_TAR FILEOUT_{NMEA,GPX,KML} CMD_CONV_{NMEA,GPX,KML} CMD_{COMPRESS,ENCRYPT} DIR_TMP
756 # Depends: yell, try, vbm, appendArgTar, tar
757 local FN="${FUNCNAME[0]}";
758 wait; # Wait to avoid collision with older magicWriteBuffer() instances (see https://www.tldp.org/LDP/abs/html/x9644.html )
759 vbm "DEBUG:STATUS:$FN:Started magicWriteBuffer().";
760
761 # Validate PATHOUT_TAR as tar.
762 checkMakeTar "$PATHOUT_TAR";
763 ## Add VERSION file if checkMakeTar had to create a tar (exited 1) or replace one (exited 2)
764 if [[ $? -eq 1 ]] || [[ $? -eq 2 ]]; then magicWriteVersion; fi
765
766 # Write bufferBash to PATHOUT_TAR
767 appendArgTar "$bufferBash" "$FILEOUT_NMEA" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_NMEA" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write NMEA data
768 appendArgTar "$bufferBash" "$FILEOUT_GPX" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_GPX" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write GPX file
769 appendArgTar "$bufferBash" "$FILEOUT_KML" "$PATHOUT_TAR" "$DIR_TMP" "$CMD_CONV_KML" "$CMD_COMPRESS" "$CMD_ENCRYPT"; # Write KML file
770 # Remove secured chunks from DIR_TMP
771 try rm "$PATHOUT_NMEA" "$PATHOUT_GPX" "$PATHOUT_KML";
772 yell "DEBUG:STATUS:$FN:Finished magicWriteBuffer().";
773 } # bkgpslog write function
774
775 main() {
776 processArguments "$@" # Process arguments.
777
778 # Determine working directory
779 ## Set DIR_TMP_PARENT to user-specified value if specified
780 if [[ "$OPTION_TMPDIR" = "true" ]]; then
781 if [[ -d "$TMP_DIR_PRIORITY" ]]; then
782 DIR_TMP_PARENT="$OPTION_TMPDIR";
783 else
784 yell "WARNING:Specified temporary working directory not valid:$OPTION_TMPDIR";
785 exit 1;
786 fi
787 fi
788
789 ## Set DIR_TMP_PARENT to default or fallback otherwise
790 if [[ -d "$DIR_TMP_DEFAULT" ]]; then
791 DIR_TMP_PARENT="$DIR_TMP_DEFAULT";
792 elif [[ -d /tmp ]]; then
793 yell "WARNING:/dev/shm not available. Falling back to /tmp .";
794 DIR_TMP_PARENT="/tmp";
795 else
796 yell "ERROR:No valid working directory available. Exiting.";
797 exit 1;
798 fi
799
800 ## Set DIR_TMP using DIR_TMP_PARENT and nonce (SCRIPT_TIME_START)
801 DIR_TMP="$DIR_TMP_PARENT"/"$SCRIPT_TIME_START""..bkgpslog" && vbm "DEBUG:Set DIR_TMP to:$DIR_TMP"; # Note: removed at end of main().
802
803 # Set output encryption and compression option strings
804 if [[ "$OPTION_ENCRYPT" = "true" ]]; then # Check if encryption option active.
805 if checkapp age; then # Check that age is available.
806 for pubkey in "${recPubKeys[@]}"; do # Validate recipient pubkey strings by forming test message
807 vbm "DEBUG:Testing pubkey string:$pubkey"
808 if echo "butts" | age -a -r "$pubkey" 1>/dev/null; then
809 #### Form age recipient string
810 recipients="$recipients""-r $pubkey ";
811 vbm "STATUS:Added pubkey for forming age recipient string:""$pubkey";
812 vbm "DEBUG:recipients:""$recipients";
813 #### Add validated pubkey to recPubKeysValid array
814 recPubKeysValid+=("$pubkey") && vbm "DEBUG:recPubkeysValid:pubkey added:$pubkey";
815 else
816 yell "ERROR:Exit code ""$?"". Invalid recipient pubkey string. Exiting."; exit 1;
817 fi
818 done
819 vbm "DEBUG:Finished processing recPubKeys array";
820
821 ## Form age command string
822 CMD_ENCRYPT="age ""$recipients ";
823 CMD_ENCRYPT_SUFFIX=".age";
824 else
825 yell "ERROR:Encryption enabled but \"age\" not found. Exiting."; exit 1;
826 fi
827 else
828 CMD_ENCRYPT="tee /dev/null ";
829 CMD_ENCRYPT_SUFFIX="";
830 vbm "DEBUG:Encryption not enabled."
831 fi
832 if [[ "$OPTION_COMPRESS" = "true" ]]; then # Check if compression option active
833 if checkapp gzip; then # Check if gzip available
834 CMD_COMPRESS="gzip ";
835 CMD_COMPRESS_SUFFIX=".gz";
836 else
837 yell "ERROR:Compression enabled but \"gzip\" not found. Exiting."; exit 1;
838 fi
839 else
840 CMD_COMPRESS="tee /dev/null ";
841 CMD_COMPRESS_SUFFIX="";
842 vbm "DEBUG:Compression not enabled.";
843 fi
844
845 # Check that critical apps and dirs are available, displag missing ones.
846 if ! checkapp gpspipe tar && ! checkdir "$DIR_OUT" "/dev/shm"; then
847 yell "ERROR:Critical components missing.";
848 displayMissing; yell "Exiting."; exit 1; fi
849
850 # Set script lifespan
851 setScriptTTL "$SCRIPT_TTL"; # seconds until next new SCRIPT_TTL (ex: "day" or "hour")
852
853 # File name substring: encoded bufferTTL
854 bufferTTL_STR="$(timeDuration $BUFFER_TTL)";
855
856 # Init temp working dir
857 try mkdir "$DIR_TMP" && vbm "DEBUG:Working dir creatd at:$DIR_TMP";
858
859 # Initialize 'tar' archive
860 ## Define output tar path (note: each day gets *one* tar file (Ex: "20200731..hostname_location.[.gpx.gz].tar"))
861 PATHOUT_TAR="$DIR_OUT"/"$(dateShort)".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar && \
862 vbm "STATUS:Set PATHOUT_TAR to:$PATHOUT_TAR";
863 ## Check that PATHOUT_TAR is a tar. Rename old and create empty one otherwise.
864 checkMakeTar "$PATHOUT_TAR" && vbm "DEBUG:Confirmed or Created to be a tar:$PATHOUT_TAR";
865 ## Append VERSION file to PATHOUT_TAR
866 magicWriteVersion;
867
868 # Record gps data until script lifespan ends
869 declare debugCounter; debugCounter="0"; # set debug counter
870 while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
871 timeBufferStart="$(dateTimeShort)"; # Note start time
872 # Determine file paths (time is start of buffer period)
873 FILEOUT_BASENAME="$timeBufferStart""--""$bufferTTL_STR""..""$SCRIPT_HOSTNAME""_location" && vbm "STATUS:Set FILEOUT_BASENAME to:$FILEOUT_BASENAME";
874 ## Files saved to DIR_TMP
875 FILEOUT_NMEA="$FILEOUT_BASENAME".nmea"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_NMEA to:$FILEOUT_NMEA";
876 FILEOUT_GPX="$FILEOUT_BASENAME".gpx"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_GPX to:$FILEOUT_GPX";
877 FILEOUT_KML="$FILEOUT_BASENAME".kml"$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX" && vbm "STATUS:Set FILEOUT_KML to:$FILEOUT_KML";
878 PATHOUT_NMEA="$DIR_TMP"/"$FILEOUT_NMEA" && vbm "STATUS:Set PATHOUT_NMEA to:$PATHOUT_NMEA";
879 PATHOUT_GPX="$DIR_TMP"/"$FILEOUT_GPX" && vbm "STATUS:Set PATHOUT_GPX to:$PATHOUT_GPX";
880 PATHOUT_KML="$DIR_TMP"/"$FILEOUT_KML" && vbm "STATUS:Set PATHOUT_KML to:$PATHOUT_KML";
881 ## Files saved to disk (DIR_OUT)
882 ### one file per day (Ex: "20200731..hostname_location.[.gpx.gz].tar")
883 PATHOUT_TAR="$DIR_OUT"/"$(dateShort)".."$SCRIPT_HOSTNAME""_location""$CMD_COMPRESS_SUFFIX""$CMD_ENCRYPT_SUFFIX".tar && \
884 vbm "STATUS:Set PATHOUT_TAR to:$PATHOUT_TAR";
885 # Define GPS conversion commands
886 CMD_CONV_NMEA="tee /dev/null " && vbm "STATUS:Set CMD_CONV_NMEA to:$CMD_CONV_NMEA"; # tee as passthrough
887 CMD_CONV_GPX="gpsbabel -i nmea -f - -o gpx -F - " && vbm "STATUS:Set CMD_CONV_GPX to:$CMD_CONV_GPX"; # convert NMEA to GPX
888 CMD_CONV_KML="gpsbabel -i nmea -f - -o kml -F - " && vbm "STATUS:Set CMD_CONV_KML to:$CMD_CONV_KML"; # convert NMEA to KML
889 # Fill Bash variable buffer
890 bufferBash="$(timeout "$BUFFER_TTL""s" gpspipe -r)" && vbm "STATUS:Successfully filled bufferBash variable with gpspipe data."; # Record gpspipe nmea data to buffer for bufferTTL seconds
891 # Process bufferBash, save secured chunk set to DIR_TMP
892 vbm "STATUS:Beginning to save data to $DIR_TMP";
893 magicWriteBuffer &
894 # Append each secured chunk in memory dir (DIR_TMP) to file on disk (PATHOUT_TAR in DIR_OUT)
895 vbm "STATUS:DIR_TMP :$DIR_TMP";
896 vbm "STATUS:PATHOUT_TAR :$PATHOUT_TAR";
897 vbm "STATUS:PATHOUT_NMEA:$PATHOUT_NMEA";
898 vbm "STATUS:PATHOUT_GPX:$PATHOUT_GPX";
899 vbm "STATUS:PATHOUT_KML:$PATHOUT_KML";
900
901 # Reset buffer and filenames
902 unset bufferBash FILEOUT_BASENAME PATHOUT_NMEA PATHOUT_GPX PATHOUT_KML PATHOUT_TAR timeBufferStart;
903 vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
904 ((debugCounter++))
905 done
906
907 # Remove DIR_TMP
908 try rm -r "$DIR_TMP";
909
910 vbm "STATUS:Main function finished.";
911 } # Main function.
912 #===END Declare local script functions===
913 #==END Define script parameters==
914
915
916 #==BEGIN Perform work and exit==
917 main "$@" # Run main function.
918 exit 0;
919 #==END Perform work and exit==