eval/libeval.sh

   1 # The Evaluator -- Shell Function Library
   2 # (c) 2001--2008 Martin Mares <mj@ucw.cz>
   3
   4 # General settings
   5 shopt -s dotglob
   6
   7 # Logging functions.
   8 # File handles used: fd1=log, fd2=progress
   9
  10 function log-init
  11 {
  12         exec >>$TDIR/log
  13         HAVE_LOG=1
  14 }
  15
  16 function pstart
  17 {
  18         echo >&2 -n "$@"
  19 }
  20
  21 function pcont
  22 {
  23         echo >&2 -n "$@"
  24 }
  25
  26 function pend
  27 {
  28         echo >&2 "$@"
  29 }
  30
  31 function die
  32 {
  33         # Report an internal error
  34         echo >&2 "$@"
  35         [ -n "$HAVE_LOG" ] && echo "Fatal error: $@"
  36         exit 2
  37 }
  38
  39 function fatal
  40 {
  41         # Report a fatal error in the program being tested
  42         echo >&2 "$@"
  43         [ -n "$HAVE_LOG" ] && echo "Fatal error: $@"
  44         exit 1
  45 }
  46
  47 function try-ln
  48 {
  49         ln $1 $2 2>/dev/null || cp $1 $2
  50 }
  51
  52 # Expand occurrences of `$var' in a given variable
  53
  54 function expand-var
  55 {
  56         eval echo \"${!1}\"
  57 }
  58
  59 # Given a <prefix>, override each variable <x> by <prefix>_<x>
  60
  61 function override-vars
  62 {
  63         local OR V W
  64         declare -a OR
  65         # `${!${1}_@}' does not work, so we have to use eval
  66         OR=($(eval echo '${!'$1'_@}'))
  67         for V in "${OR[@]}" ; do
  68                 W=${V##$1_}
  69                 eval $W='"$'$V'"'
  70         done
  71 }
  72
  73 # Sandbox subroutines
  74
  75 function box-init
  76 {
  77         pstart "Preparing sandbox... "
  78
  79         # Default values for user/group
  80         EVAL_USER=${EVAL_USER:-$USER}
  81         EVAL_GROUP=${EVAL_GROUP:-$GROUP}
  82         TEST_USER=${TEST_USER:-$EVAL_USER}
  83
  84         if [ -z "$TEST_USER" -o "$TEST_USER" == "$EVAL_USER" ] ; then
  85                 pcont "running locally (INSECURE), "
  86                 TEST_USER="$EVAL_USER"
  87                 BOXDIR=$HDIR/box
  88                 BOXCMD=$HDIR/bin/box
  89                 mkdir -p $BOXDIR
  90         else
  91                 pcont "used account $TEST_USER, "
  92                 BOXDIR=$HDIR/box
  93                 BOXCMD=$HDIR/bin/box-$TEST_USER
  94         fi
  95         [ -d $BOXDIR -a -f $BOXCMD ] || die "Sandbox set up incorrectly"
  96         BOXCMD="$BOXCMD -c$BOXDIR"
  97         echo "Sandbox directory: $BOXDIR"
  98         echo "Sandbox command: $BOXCMD"
  99         box-clean
 100         pend "OK"
 101 }
 102
 103 function box-clean
 104 {
 105         [ -n "$BOXCMD" ] || die "box-init not called"
 106         rm -rf $BOXDIR/*
 107 }
 108
 109 # Initialization of testing directories
 110
 111 function dir-init
 112 {
 113         pstart "Initializing... "
 114         [ -z "$HDIR" ] && HDIR=.
 115         PDIR=$HDIR/problems/$PROBLEM
 116         SDIR=$HDIR/solutions/$CONTESTANT/$PROBLEM
 117         TDIR=$HDIR/testing/$CONTESTANT/$PROBLEM
 118         TMPDIR=$HDIR/tmp/
 119
 120         [ -d $PDIR ] || die "Problem $PROBLEM not known"
 121         [ -d $SDIR ] || fatal "Solution of $PROBLEM not found"
 122         mkdir -p $TDIR $TMPDIR
 123         rm -rf $TDIR $TMPDIR
 124         mkdir -p $TDIR $TMPDIR
 125         cat >$TDIR/log <<EOF
 126 Testing solution of $PROBLEM by $CONTESTANT
 127 Test started at `date`
 128 Eval base directory: $HDIR
 129 Contestant's solution directory: $SDIR
 130 Problem directory: $PDIR
 131 Testing directory: $TDIR
 132 EOF
 133         pend "OK"
 134 }
 135
 136 # Locate source file.
 137 # If no parameter is given, locate it in SDIR and return name as SRCN and extension as SRCEXT
 138 # Or a file name can be given and then SDIR, SRCN and SRCEXT are set.
 139 # Beware, SDIR and SRCN can contain spaces and other strange user-supplied characters.
 140
 141 function locate-source
 142 {
 143         pstart "Finding source... "
 144         local SBASE
 145         if [ -n "$1" ] ; then
 146                 SDIR=`dirname "$1"`
 147                 local S=`basename "$1"`
 148                 SBASE=$(echo "$S" | sed 's/\.\([^.]\+\)//')
 149                 SRCEXT=$(echo "$S" | sed '/\./!d; s/.*\.\([^.]\+\)/\1/')
 150                 if [ -n "$SRCEXT" ] ; then
 151                         # Full name given, so just check the extension and existence
 152                         SRCN="$S"
 153                         [ -f "$SDIR/$SRCN" ] || die "Cannot find source file $SDIR/$SRCN"
 154                         SRCEXT_OK=
 155                         for a in $EXTENSIONS ; do
 156                                 if [ $a == $SRCEXT ] ; then
 157                                         pend $SDIR/$SRCN
 158                                         echo "Explicitly set source file: $SDIR/$SRCN"
 159                                         return 0
 160                                 fi
 161                         done
 162                         die "Unknown extension .$SRCEXT"
 163                 fi
 164         else
 165                 SBASE=$PROBLEM
 166         fi
 167         for a in $EXTENSIONS ; do
 168                 if [ -f "$SDIR/$SBASE.$a" ] ; then
 169                         [ -z "$SRCN" ] || die "Multiple source files found: $SDIR/$PROBLEM.$a and $SDIR/$SRCN. Please fix."
 170                         SRCN="$SBASE.$a"
 171                         SRCEXT=$a
 172                 fi
 173         done
 174         [ -n "$SRCN" ] || fatal "NOT FOUND"
 175         pend $SRCN
 176         echo "Found source file: $SDIR/$SRCN"
 177 }
 178
 179 # Compilation (compile SDIR/SRCN with PDIR/COMP_EXTRAS to EXE=TDIR/PROBLEM)
 180
 181 function compile
 182 {
 183         pstart "Compiling... "
 184
 185         a="ALIAS_EXT_$SRCEXT"
 186         if [ -n "${!a}" ] ; then
 187                 SRCEXT="${!a}"
 188                 echo "Normalized file extension: $SRCEXT"
 189         fi
 190         override-vars "EXT_$SRCEXT"
 191
 192         # Beware, the original SRCN can be a strange user-supplied name
 193         SRC=$PROBLEM.$SRCEXT
 194         cp "$SDIR/$SRCN" $TDIR/$SRC
 195         if [ -n "$COMP_EXTRAS" ] ; then
 196                 echo "Extras: $COMP_EXTRAS"
 197                 for a in $COMP_EXTRAS ; do cp $PDIR/$a $TDIR/ ; done
 198         fi
 199
 200         box-clean
 201         for a in $SRC $COMP_EXTRAS ; do cp $TDIR/$a $BOXDIR/ ; done
 202         EXE=$PROBLEM
 203         CCMD=$(expand-var COMP)
 204         COMP_SANDBOX_OPTS=$(expand-var COMP_SANDBOX_OPTS)
 205         echo "Compiler command: $CCMD"
 206         echo "Compiler sandbox options: $COMP_SANDBOX_OPTS"
 207         if [ -n "$PRE_COMPILE_HOOK" ] ; then
 208                 echo "Pre-compile hook: $PRE_COMPILE_HOOK"
 209                 eval $PRE_COMPILE_HOOK
 210         fi
 211
 212         echo "Compiler input files:"
 213         ls -Al $BOXDIR
 214         echo "Compiler output:"
 215         if ! $BOXCMD $COMP_SANDBOX_OPTS -- $CCMD 2>$TDIR/compile.out ; then
 216                 COMPILE_MSG="`cat $TDIR/compile.out`"
 217                 pend "FAILED: $COMPILE_MSG"
 218                 echo "$COMPILE_MSG"
 219                 return 1
 220         fi
 221         cat $TDIR/compile.out
 222         rm $TDIR/compile.out
 223         if [ -n "$POST_COMPILE_HOOK" ] ; then
 224                 echo "Post-compile hook: $POST_COMPILE_HOOK"
 225                 eval $POST_COMPILE_HOOK
 226         fi
 227         echo "Compiler output files:"
 228         ls -Al $BOXDIR
 229         if [ ! -f $BOXDIR/$PROBLEM ] ; then
 230                 pend "FAILED: Missing executable file"
 231                 echo "Missing executable file"
 232                 return 1
 233         fi
 234         EXE=$TDIR/$PROBLEM
 235         cp -a $BOXDIR/$PROBLEM $EXE
 236         echo "Compiled OK, result copied to $EXE"
 237         pend "OK"
 238 }
 239
 240 # Running of test program according to current task type (returns exit code and TEST_MSG)
 241
 242 function test-config
 243 {
 244         [ -f $PDIR/$TEST.config ] && . $PDIR/$TEST.config
 245         override-vars "TEST_$TEST"
 246 }
 247
 248 function test-run
 249 {
 250         test-run-$TASK_TYPE
 251 }
 252
 253 function test-result
 254 {
 255         P=$1
 256         M=$2
 257         if [ -s $TDIR/$TEST.pts ] ; then
 258                 P=`cat $TDIR/$TEST.pts`
 259                 rm $TDIR/$TEST.pts
 260         fi
 261
 262         # Translate signal numbers to readable strings
 263         SG=${M#Caught fatal signal }
 264         SG=${SG#Committed suicide by signal }
 265         if [ "$SG" != "$M" ] ; then
 266                 SG=`perl -MConfig -e '@s=split / /,$Config{sig_name}; print $s[$ARGV[0]]' $SG`
 267                 [ -z "$SG" ] || M="$M (SIG$SG)"
 268         fi
 269
 270         # Translate runtime errors to readable strings
 271         RE=${M#Exited with error status }
 272         if [ -n "$EXIT_CODE_HOOK" -a "$RE" != "$M" ] ; then
 273                 NEWMSG=`$EXIT_CODE_HOOK $RE`
 274                 if [ -n "$NEWMSG" ] ; then
 275                         M="Runtime error $RE: $NEWMSG"
 276                 fi
 277         fi
 278
 279         echo "Verdict: $M"
 280         echo "Points: $P"
 281         test-verdict $P "$M"
 282 }
 283
 284 function test-prolog
 285 {
 286         pcont "<init> "
 287         box-clean
 288         echo "Executable file: $TDIR/$PROBLEM"
 289         if [ ! -x $TDIR/$PROBLEM ] ; then
 290                 test-result 0 "Compile error"
 291         fi
 292         cp $TDIR/$PROBLEM $BOXDIR/
 293         IN_TYPE=${IN_TYPE:-$IO_TYPE}
 294         OUT_TYPE=${OUT_TYPE:-$IO_TYPE}
 295         case $IN_TYPE in
 296                 file)   echo "Input file: $PROBLEM.in (from $PDIR/$TEST.in)"
 297                         try-ln $PDIR/$TEST.in $TDIR/$TEST.in
 298                         cp $PDIR/$TEST.in $BOXDIR/$PROBLEM.in
 299                         [ $TASK_TYPE == interactive ] || BOX_EXTRAS="$BOX_EXTRAS -i/dev/null"
 300                         ;;
 301                 stdio)  echo "Input file: <stdin> (from $PDIR/$TEST.in)"
 302                         try-ln $PDIR/$TEST.in $TDIR/$TEST.in
 303                         cp $PDIR/$TEST.in $BOXDIR/.stdin
 304                         BOX_EXTRAS="$BOX_EXTRAS -i.stdin"
 305                         ;;
 306                 none)   echo "Input file: <none>"
 307                         ;;
 308                 *)      die "Unknown IN_TYPE $IN_TYPE"
 309                         ;;
 310         esac
 311         if [ -n "$EV_PEDANT" -a $IN_TYPE != none ] ; then
 312                 pcont "<pedant> "
 313                 if [ "$EV_PEDANT" = 1 ] ; then
 314                         EV_PEDANT=" "
 315                 fi
 316                 bin/pedant <$TDIR/$TEST.in >$TDIR/$TEST.pedant $EV_PEDANT
 317                 if [ -s $TDIR/$TEST.pedant ] ; then
 318                         pend
 319                         sed 's/^/\t/' <$TDIR/$TEST.pedant >&2
 320                         pstart -e '\t'
 321                 fi
 322         fi
 323         case $OUT_TYPE in
 324                 file)   echo "Output file: $PROBLEM.out"
 325                         [ $TASK_TYPE == interactive ] || BOX_EXTRAS="$BOX_EXTRAS -o/dev/null"
 326                         ;;
 327                 stdio)  echo "Output file: <stdout>"
 328                         BOX_EXTRAS="$BOX_EXTRAS -o.stdout"
 329                         ;;
 330                 none)   echo "Output file: <none>"
 331                         ;;
 332                 *)      die "Unknown OUT_TYPE $OUT_TYPE"
 333                         ;;
 334         esac
 335         echo "Timeout: $TIME_LIMIT s"
 336         echo "Memory: $MEM_LIMIT KB"
 337         if [ -n "$PRE_RUN_HOOK" ] ; then
 338                 echo "Pre-run hook: $PRE_RUN_HOOK"
 339                 eval $PRE_RUN_HOOK
 340         fi
 341         echo "Sandbox contents before start:"
 342         ls -Al $BOXDIR
 343 }
 344
 345 function test-epilog
 346 {
 347         if [ -n "$POST_RUN_HOOK" ] ; then
 348                 echo "Post-run hook: $POST_RUN_HOOK"
 349                 eval $POST_RUN_HOOK
 350         fi
 351         echo "Sandbox contents after exit:"
 352         ls -Al $BOXDIR
 353         case ${OUT_TYPE:-$IO_TYPE} in
 354                 file)   [ -f $BOXDIR/$PROBLEM.out ] || test-result 0 "No output file"
 355                         cp $BOXDIR/$PROBLEM.out $TDIR/$TEST.out
 356                         ;;
 357                 stdio)  [ -f $BOXDIR/.stdout ] || test-result 0 "No output file"
 358                         cp $BOXDIR/.stdout $TDIR/$TEST.out
 359                         ;;
 360         esac
 361
 362         if [ -n "$OUTPUT_FILTER" -a "$OUT_TYPE" != none -a -z "$EV_NOFILTER" ] ; then
 363                 pcont "<filter> "
 364                 FILTER=$(expand-var OUTPUT_FILTER)
 365                 echo "Output filter command: $FILTER"
 366                 mv $TDIR/$TEST.out $TDIR/$TEST.raw
 367                 if ! eval $FILTER 2>$TMPDIR/exec.out ; then
 368                         cat $TMPDIR/exec.out
 369                         MSG=`tail -1 $TMPDIR/exec.out`
 370                         if [ -z "$MSG" ] ; then MSG="Filter failed" ; fi
 371                         test-result 0 "$MSG"
 372                 fi
 373                 cat $TMPDIR/exec.out
 374         fi
 375 }
 376
 377 # Running of test program with file input/output
 378
 379 function test-run-file
 380 {
 381         test-prolog
 382         pcont "<run> "
 383         BOXOPTS=$(expand-var TEST_SANDBOX_OPTS)
 384         echo "Sandbox options: $BOXOPTS"
 385         if ! $BOXCMD $BOXOPTS -- ./$PROBLEM 2>$TMPDIR/exec.out ; then
 386                 cat $TMPDIR/exec.out
 387                 MSG=`tail -1 $TMPDIR/exec.out`
 388                 test-result 0 "$MSG"
 389         fi
 390         cat $TMPDIR/exec.out
 391         test-epilog
 392 }
 393
 394 # Running of interactive test programs
 395
 396 function test-run-interactive
 397 {
 398         test-prolog
 399         pcont "<run> "
 400         BOXOPTS=$(expand-var TEST_SANDBOX_OPTS)
 401         echo "Sandbox options: $BOXOPTS"
 402         ICCMD=$(expand-var IA_CHECK)
 403         echo "Interactive checker: $ICCMD"
 404         if ! $HDIR/bin/iwrapper $BOXCMD $BOXOPTS -- ./$PROBLEM @@ $ICCMD 2>$TMPDIR/exec.out ; then
 405                 cat $TMPDIR/exec.out
 406                 MSG="`head -1 $TMPDIR/exec.out`"
 407                 test-result 0 "$MSG"
 408         fi
 409         cat $TMPDIR/exec.out
 410         test-epilog
 411 }
 412
 413 # "Running" of open-data problems
 414
 415 function test-run-open-data
 416 {
 417         [ -f $SDIR/$TEST.out ] || test-result 0 "No solution"
 418         ln $SDIR/$TEST.out $TDIR/$TEST.out
 419 }
 420
 421 # Syntax checks
 422
 423 function syntax-check
 424 {
 425         [ -n "$SYNTAX_CHECK" ] || return 0
 426         [ -z "$EV_NOCHECK" ] || return 0
 427         pcont "<syntax> "
 428         SCHECK=$(expand-var SYNTAX_CHECK)
 429         echo "Syntax check command: $SCHECK"
 430         if ! eval $SCHECK 2>$TMPDIR/exec.out ; then
 431                 cat $TMPDIR/exec.out
 432                 MSG=`tail -1 $TMPDIR/exec.out`
 433                 if [ -z "$MSG" ] ; then MSG="Wrong syntax" ; fi
 434                 test-result 0 "$MSG"
 435         fi
 436         cat $TMPDIR/exec.out
 437 }
 438
 439 # Output checks
 440
 441 function output-check
 442 {
 443         MSG=
 444         if [ -n "$OUTPUT_CHECK" -a "$OUT_TYPE" != none -a -z "$EV_NOCHECK" ] ; then
 445                 pcont "<check> "
 446                 [ -f $PDIR/$TEST.out ] && ln $PDIR/$TEST.out $TDIR/$TEST.ok
 447                 OCHECK=$(expand-var OUTPUT_CHECK)
 448                 echo "Output check command: $OCHECK"
 449                 if ! eval $OCHECK 2>$TMPDIR/exec.out ; then
 450                         cat $TMPDIR/exec.out
 451                         MSG=`tail -1 $TMPDIR/exec.out`
 452                         if [ -z "$MSG" ] ; then MSG="Wrong answer" ; fi
 453                         test-result 0 "$MSG"
 454                 fi
 455                 cat $TMPDIR/exec.out
 456                 MSG=`tail -1 $TMPDIR/exec.out`
 457         fi
 458         if [ -z "$MSG" ] ; then MSG="OK" ; fi
 459         test-result $POINTS_PER_TEST "$MSG"
 460 }
 461
 462 # Setup of public commands
 463
 464 function public-setup
 465 {
 466         HDIR=$MO_ROOT
 467         PDIR=$MO_ROOT/problems/$PROBLEM
 468         SDIR=.
 469         TDIR=~/.test
 470         TMPDIR=~/.test
 471         [ -d $PDIR ] || die "Unknown problem $PROBLEM"
 472
 473         pstart "Initializing... "
 474         mkdir -p $TDIR
 475         rm -rf $TDIR/*
 476         BOXDIR=~/.box
 477         mkdir -p $BOXDIR
 478         rm -rf $BOXDIR/*
 479         BOXCMD="$MO_ROOT/bin/box -c$BOXDIR"
 480         exec >check-log
 481         pend "OK  (see 'check-log' for details)"
 482 }
 483
 484 # Locate output of open data problem, test case TEST
 485 # Beware, SDIR and SRCN can contain spaces and other strange user-supplied characters.
 486
 487 function open-locate
 488 {
 489         [ -f $PDIR/$TEST.in ] || die "Unknown test $TEST"
 490         if [ -n "$1" ] ; then
 491                 SDIR=`dirname "$1"`
 492                 SRCN=`basename "$1"`
 493         else
 494                 SRCN=$SDIR/$PROBLEM$TEST.out
 495         fi
 496         [ -f "$SDIR/$SRCN" ] || fatal "Output file $SRCN not found"
 497 }
 498
 499 # Translation of runtime error codes for various compilers
 500
 501 function fpc-exit-code
 502 {
 503         case "$1" in
 504                 200)    echo -n "Division by zero" ;;
 505                 201)    echo -n "Range check error" ;;
 506                 202)    echo -n "Stack overflow" ;;
 507                 203)    echo -n "Heap overflow" ;;
 508                 205)    echo -n "Floating point overflow" ;;
 509                 215)    echo -n "Arithmetic overflow" ;;
 510                 216)    echo -n "Segmentation fault" ;;
 511         esac
 512 }
 513
 514 # A helper function for parsing of command-line overrides of variables
 515
 516 function parse-cmdline
 517 {
 518         if [ "${1#*=}" != "$1" ] ; then
 519                 local var=${1%%=*}
 520                 local val=${1#*=}
 521                 eval $var="'$val'"
 522                 return 0
 523         else
 524                 return 1
 525         fi
 526 }