Just Another Perl Hacker - Examples

Examples

JAPH program without obfuscation:

print "Just another Perl hacker,";

Embedding JAPH in opaque code:

$_='987;s/^(d+)/$1-1/e;$1?eval:print"Just another Perl hacker,"';eval;

Decoding JAPH from a transposed string literal:

$_="krJhruaesrltre c a cnP,ohet";$_.=$1,print$2while s/(..)(.)//;

Printing out JAPH as separate processes:

for $i (0..4) { if (!fork) { $i == 0 or not { $SIG{INT} = sub { print "J" } } or $i == 1 or not { $SIG{INT} = sub { print "A" } } or $i == 2 or not { $SIG{INT} = sub { print "P" } } or $i == 3 or not { $SIG{INT} = sub { print "H" } } ; sleep $i; last; } } kill INT => $$;

Appearing as if it does something completely unrelated to printing JAPH:

$_ = "wftedskaebjgdpjgidbsmnjgc"; tr/a-z/oh, turtleneck Phrase Jar!/; print;

Forking processes to print out one letter each in the correct order:

@P=split//,".URRUU\c8R";@d=split//,"\nrekcah xinU / lreP rehtona tsuJ";sub p{ @p{"r$p","u$p"}=(P,P);pipe"r$p","u$p";++$p;($q*=2)+=$f=!fork;map{$P=$P[$f^ord ($p{$_})&6];$p{$_}=/ ^$P/ix?$P:close$_}keys%p}p;p;p;p;p;map{$p{$_}=~/^/&& close$_}%p;wait until$?;map{/^r/&&<$_>}%p;$_=$d;sleep rand(2)if/\S/;print

Using only Perl keywords (no literals or punctuation):

not exp log srand xor s qq qx xor s x x length uc ord and print chr ord for qw q join use sub tied qx xor eval xor print qq q q xor int eval lc q m cos and print chr ord for qw y abs ne open tied hex exp ref y m xor scalar srand print qq q q xor int eval lc qq y sqrt cos and print chr ord for qw x printf each return local x y or print qq s s and eval q s undef or oct xor time xor ref print chr int ord lc foreach qw y hex alarm chdir kill exec return y s gt sin sort split

Using only punctuation, no alphanumeric characters (written by Eric Roode; only works on Unix and Unix-like systems):

`$=`;$_=\%!;($_)=/(.)/;$==++$|;($.,$/,$,,$\,$",$;,$^,$#,$~,$*,$:,@%)=( $!=~/(.)(.).(.)(.)(.)(.)..(.)(.)(.)..(.)......(.)/,$"),$=++;$.++;$.++; $_++;$_++;($_,$\,$,)=($~.$"."$;$/$%$_$\$,$:$%",$"&$~,$#,);$,++ ;$,++;$^|=$";`$_$\$,$/$:$;$~$*$%$.$~$*${#}$%$;$\$"$^$~$*.>&$=`

A much shorter one, using only punctuation, based on the EyesDrops module:

''=~('(?{'.('-)@.)@_*(@!@/)(@)@-@),@(@@+@)' ^']`}`]`@.@]@%[`}%[@`@!#@%[').',"})')

ASCII art (to make this one work, be sure to set the console size to at least 119x48):

# sub j(\$){($ P,$V)= @_;while($$P=~s:^ ::x){ $V+=('('eq$1)?-32:31 }$V+=ord( substr( $$P,0,1,""))-74} sub a{ my($I,$K,$ J,$L)=@_ ;$I=int($I*$M/$Z);$K=int( $K*$M/$Z);$J=int($J*$M /$Z);$L=int($L*$M/$Z); $G=$ J-$I;$F=$L-$K;$E=(abs($ G)>=abs($F))?$G:$F;($E<0) and($ I,$K)=($J,$L);$E||=.01 ;for($i=0;$i<=abs$E;$i++ ){ $D->{$K +int($i*$F/$E) }->{$I+int($i*$G/$E)}=1}}sub p{$D={};$ Z=$z||.01;map{ $H=$_;$I=$N=j$H;$K=$O=j$H;while($H){$q=ord substr($H,0,1,"" );if(42==$q){$J=j$H;$L=j$H}else{$q-=43;$L =$q %9;$J=($q-$L)/9;$L=$q-9*$J-4;$J-=4}$J+=$I;$L+=$K;a($I,$K,$J,$ L); ($I,$K)=($J,$L)}a($I,$K,$N,$O)}@_;my$T;map{$y=$_;map{ $T.=$D->{$y} ->{$_}?$\:' '}(-59..59);$T.="\n"}(-23..23);print"\e[H$T"}$w= eval{ require Win32::Console::ANSI};$b=$w?'1;7;':"";($j,$u,$s,$t,$a,$n,$o ,$h,$c,$k,$p,$e,$r,$l,$C)=split/}/,'Tw*JSK8IAg*PJ*QJ[*J'. 'BA*JQK8I*JC}KUz]BAIJT]*QJ\RI'.'}Tn*JQ]wRAI*JDnR8QAU}wT8KT'. ']n*JEI*EJR*QJ]*JR*DJ@IQ*JPe*'.'JBI/KI}T8@?PcdnfgVCBRcP'. '?ABKV]]}*JWe*JD*JPe*JC?8B*JE};Vq*OJQ/IP['.'wQ}*JWeOe{n*EERk8;'. 'J*JC}/U*OJdU}CWq*OJc8KJ?OU/T*QJP?}*JSe*JCnTe'. 'QIAKJR}*JV]wRAI*J?}T]*RJcJI3;U]Uq*PMW]WCT*DM*SJ'. 'ZP[Z'. 'PZaUKVgogK9K*QJnT]T]T3o[dk*JE'. '[Z\U'. '{T]*JPKTKK]*OJ[QIO[PIQIO[[gUKU\k*JE+J+J5R5AI*EJ00'. 'BCB*'. 'DMKKJIR[Q+*EJ0*EK';sub h{$\ = qw(% & @ x)[int rand 4];map{printf "\e[$b;%dm",int(rand 6)+101-60* ($w ||0);system( "cls")if$w ;($A,$S)= ($_, $ _);($M, @,)= split '}';for( $z=256 ;$z>0; $z -=$S){$S*= $A;p @,} sleep$_ ;while ($_&&($ z+=$ S) <=256){ p@,}}("". "32}7D$j" ."}AG". "$u}OG" ."$s}WG" ."$t","" ."24}(" ."IJ$a" ."}1G$n" ."}CO$o" ."}GG$t" ."}QC" ."$h}" ."^G$e" ."})IG" ."$r", "32}?" ."H$p}FG$e}QG$r". "}ZC" ."$l", "28}(LC" ."" ."". "$h}:" ."J$a}EG". "$c" ."}M" ."C$k}ZG". "$e" ."}" ."dG$r","18" ."}(" ."D;" ."$C" )}{h(16 ,1,1,0 );h(8, .98,0,0 );h(16 ,1,1,1) ;h(8.0 ,0.98,0, 1); redo}### #written 060204 by #liverpole @@@@@@@ #@@@@@@@@@@@