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jtr_rulez.pm
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jtr_rulez.pm
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package jtr_rulez;
use strict;
use warnings;
use Exporter;
my $debug = 0;
my $stdout_rules = 0;
my $failed = 0;
my $rejected = 0;
my $rules_max_length;
my $l_num; my $p_num;
my %nums; # these hold variables a ... k (used in the v command, or in get_length)
our @ISA= qw( Exporter );
# these CAN be exported.
our @EXPORT_OK = qw( debug stdout_rules failed jtr_run_rule jtr_dbg_level jtr_rule_pp_init jtr_rule_pp_next jtr_rule_rejected );
# these are exported by default.
our @EXPORT = qw( jtr_run_rule jtr_dbg_level jtr_std_out_rules_set jtr_rule_pp_init jtr_rule_pp_next jtr_rule_rejected );
my $M="";
my %cclass=(); load_classes();
my @pp_rules=();
my $pp_idx=-0;
sub dbg {
my $d = shift;
if ($debug >= $d) {
foreach my $s (@_) {
print $s;
}
}
}
sub jtr_dbg_level {
$debug = $_[0];
}
sub jtr_rule_rejected {
my $r = $rejected;
$rejected = 0;
return $r;
}
sub jtr_std_out_rules_set {
$stdout_rules = $_[0];
}
sub case_all_words { # turn john or "JOHn THE ruppor$$abc" into "John The Ruppor$$Abc"
my $w = lc $_[0];
$w =~ s/\b(\w)/\U$1/g;
return $w;
}
sub case { # turn john or JOHn into John or JOHn THE ruppor$$abc" into "John the ruppor$$abc"
my $w = lc $_[0];
my $c = substr($w, 0, 1);
if (ord($c) >= ord('a') && ord($c) <= ord('z')) {
substr($w, 0, 1) = uc $c;
}
return $w;
}
sub toggle_case { # turn jOhN into JoHn
my $w = $_[0];
# found online, unicode toggle code. Need to test for speed.
$w =~ s/ (\p{CWU}) | (\p{CWL}) /defined $1 ? uc $1 : lc $2/gex;
#
# only valid for 7-bit ascii. Now using the unicode correct version.
#$w =~ tr/A-Za-z/a-zA-Z/;
return $w;
}
sub rev { # turn john into nhoj (inlining reverse was having side effects so we function this)
my ($w) = (@_);
$w = reverse $w;
return $w;
}
sub purge { # purge out a set of characters. purge("test123john","0123456789"); gives testjohn
my ($w, $c) = @_;
$w =~ s/[$c]*//g;
return $w;
}
sub replace_chars {
my ($w, $ch, $c) = @_;
if ($c eq '^') { $c = '\\^'; }
if (substr($c,length($c)-1,1) eq '\\' && (length($c)==1 || substr($c,length($c)-2,2) eq '\\\\')) { $c .= '\\'; }
$w =~ s/[$c]/$ch/g;
return $w;
}
sub shift_case { # S shift case: "Crack96" -> "cRACK(^"
my ($w) = @_;
$w =~ tr/A-Za-z`~0-9)!@#$%^&*(\-_=+[{]}\\|;:'",<.>\/?/a-zA-Z~`)!@#$%^&*(0-9_\-+={[}]|\\:;"'<,>.?\//;
return $w;
}
sub vowel_case { # V lowercase vowels, uppercase consonants: "Crack96" -> "CRaCK96"
my ($w) = @_;
$w =~ tr/b-z/B-Z/;
$w =~ tr/AEIOU/aeiou/;
return $w;
}
sub keyboard_right { # R shift each character right, by keyboard: "Crack96" -> "Vtsvl07"
my ($w) = @_;
# same behavior as john1.8.0.3-jumbo. I do not think all on the far right are 'quite' right, but at least it matches.
# it's a very obsure rule, and not likely to have too many real world passwording implications.
# the only 'real' use is if someone sets a password,and then it does not work. Were their fingers 1 key
# to left, or 1 key to right? If so, then they can guess with these rules
$w =~ tr/`~1qaz!QAZ2wsx@WSX3edc#EDC4rfv$RFV5tgb%TGB6yhn^YHN7ujm&UJM8ik,*IK<9ol.(OL>0p;)P:\-[_{+=?\//1!2wsx@WSX3edc#EDC4rfv$RFV5tgb%TGB6yhn^YHN7ujm&UJM8ik,*IK<9ol.(OL>0p;\/)P:?\-['_{"=]+}|\\|\\/;
return $w;
}
sub keyboard_left { # L shift each character left, by keyboard: "Crack96" -> "Xeaxj85"
my ($w) = @_;
# idential output as john1.8.0.3-jumbo
$w =~ tr/2wsx3edc4rfv5tgb6yhn7ujm8ik,9ol.0p;\/@WSX#EDC$RFV%TGB^YHN&UJM*IK<(OL>)P:?1!\-[_{=]+}'"\\|/1qaz2wsx3edc4rfv5tgb6yhn7ujm8ik,9ol.!QAZ@WSX#EDC$RFV%TGB^YHN&UJM*IK<(OL>`~0p)P\-[_{;:=+/;
return $w;
}
# pluralize: "crack" -> "cracks", etc. (lowercase only)
# plural code is direct port from jtr rules.c
sub pluralizes { my ($word) = (@_);
my $len = length($word);
if ($len<2) { return $word; }
my $last=substr($word, length($word)-1,1);
my $last2=substr($word, length($word)-2,1);
if (find_any_chars("sxz", $last) > 0 ||
($len > 1 && $last eq 'h' &&
($last2 eq 'c' || $last2 eq 's'))) {
return $word . "es";
} elsif ($last eq 'f' && $last2 ne 'f') {
return $word . "ves";
} elsif ($len > 1 &&
$last eq 'e' && $last2 eq 'f') {
return $word . "ves";
} elsif ($len > 1 && $last eq 'y') {
if (find_any_chars("aeiou", $last2) > 0) {
return $word . "s";
}
return $word . "ies";
}
return $word . "s";
}
# "crack" -> "cracked", etc. (lowercase only)
sub pluralized { my ($word) = (@_);
my $len = length($word);
if ($len<2) { return $word; }
my $last=substr($word, length($word)-1,1);
my $last2=substr($word, length($word)-2,1);
if ($last eq 'd' && $last2 eq 'e') { return $word; }
if ($last eq 'y') {
substr($word, length($word)-1,1) = 'i';
} elsif (find_any_chars("bgp", $last) && !find_any_chars("bgp", $last2)) {
$word .= $last;
}
if ($last eq 'e') {
$word .= 'd';
} else {
$word .= 'ed';
}
return $word;
}
# "crack" -> "cracking", etc. (lowercase only)
sub pluralizing { my ($word) = (@_);
my $len = length($word);
if ($len<3) { return $word; }
my $last=substr($word, length($word)-1,1);
my $last2=substr($word, length($word)-2,1);
my $last3=substr($word, length($word)-3,1);
if ($last eq 'g' && $last2 eq 'n' && $last3 eq 'i') { return $word; }
if (find_any_chars("eaiou", $last)) {
return substr($word,0,length($word)-1) . "ing";
}
if (find_any_chars("bgp", $last) && !find_any_chars("bgp", $last2)) {
$word .= $last;
}
return $word . "ing";
}
sub find_any_chars {
# this function probably could be optimized, but as written, it works
# well for all = / ? ( ) % type rejection rules.
my ($w, $c) = @_;
if (!defined ($c) || length($c) == 0) { return ""; }
if (substr($c,length($c)-1,1) eq '\\' && (length($c)==1 || substr($c,length($c)-2,2) eq '\\\\')) { $c .= '\\'; }
# dbg(3,"find_any_chars: w=$w c=$c s/[^$c]*//g;\n");
$w =~ s/[^$c]*//g;
return length($w);
}
sub find_first_char {
# NOTE, this is used for / and % rejections, AND find_any_chars has already
# returned VALID information. Now we simply want to know position offsets.
my ($off, $w, $c) = @_;
my $v = 0;
if ($off >= length($w)) { return length($w); }
$w = substr($w, $off, length($w)-$off);
my @wa = split('', $w);
my @ca = split('', $c);
foreach my $wc (@wa) {
foreach my $cc (@ca) {
if ($wc eq $cc) { return $off+$v; }
}
++$v;
}
return length($w);
}
sub jtr_run_rule { my ($rule, $word, $hc_logic) = @_;
dbg(1, "jtr_run_rule called with debug level $debug\n");
$M = $word; # memory
if (!defined $hc_logic) { $hc_logic=0; }
$l_num = length($M);
%nums = ( 'a'=>0,'b'=>0,'c'=>0,'d'=>0,'e'=>0,'f'=>0,'g'=>0,'h'=>0,'i'=>0,'k'=>0 );
$failed = 0;
$rejected = 0;
dbg(2, "checking word $word with rule $rule\n");
my @rc = split('', $rule);
dbg(2, "after split\n");
for (my $i = 0; $i < scalar(@rc); ++$i) {
if (length($word) == 0) { return ""; } # in jtr, this is a 'reject'
my $c = $rc[$i];
next if ($c eq ' ' || $c eq ':');
if ($c eq 'l') { $word = lc $word; next; }
if ($c eq 'u') { $word = uc $word; next; }
if ($c eq 'c') { $word = case($word); next; }
if ($c eq 'C') { $word = toggle_case(case($word)); next; }
if ($c eq 't') { $word = toggle_case($word); next; }
if ($c eq 'd') { $word = $word.$word; next; }
if ($c eq 'r') { $word = rev($word); next; }
if ($c eq 'f') { $word = $word.rev($word); next; }
if ($c eq '$') { ++$i; $word .= $rc[$i]; next; } #if ($rc[$i] eq '\\' && defined $rc[$i+1]) {++$i;}
if ($c eq '^') { ++$i; $word = $rc[$i].$word; next; }
if ($c eq '{') { $word = rotl($word); next; }
if ($c eq '}') { $word = rotr($word); next; }
if ($c eq '[') { if (length($word)) {$word = substr($word, 1);} next; }
if ($c eq ']') { if (length($word)) {$word = substr($word, 0, length($word)-1);} next; }
if ($c eq 'D') { my $n=get_num_val_raw($rc[++$i],$word); if ($n<length($word)) {substr($word, $n, 1)="";} next; }
if ($c eq 'S') { $word = shift_case($word); next; }
if ($c eq 'V') { $word = vowel_case($word); next; }
if ($c eq '>') { my $n=get_num_val_raw($rc[++$i],$word); if(length($word)<=$n){$rejected=1; return ""; } next; }
if ($c eq '<') { my $n=get_num_val_raw($rc[++$i],$word); if(length($word)>=$n){$rejected=1; return ""; } next; }
if ($c eq '_') { my $n=get_num_val_raw($rc[++$i],$word); if(length($word)!=$n){$rejected=1; return ""; } next; }
if ($c eq '\''){ my $n=get_num_val_raw($rc[++$i],$word); if(length($word)> $n){ $word=substr($word,0,$n); } next; }
if ($c eq 'p') {
my $do_hc = 1;
my $n = 0;
if (length($rule) > $i+1) {$n=get_num_val_raw($rc[$i+1],$word,1);}
if ($hc_logic == 0 && ($n < 1 || $n > 9)) {
$word=pluralizes($word);
$do_hc = 0;
}
if ($hc_logic > 0 || $do_hc > 0) {
++$i;
if ($n < 1) {$rejected=1; return ""; }
my $s = $word;
while ($n--) {
$s .= $word;
}
$word = $s;
}
next;
}
if ($c eq 'P') { $word=pluralized($word); next; }
if ($c eq 'I') { $word=pluralizing($word); next; }
#
# -c -8 -s -p -u -U ->N -<N -: (rejection)
# Not sure how to handle these, since we do not have a running john environment
# to probe to know what/how these impact us.
#
# actually these are removed in the pp (for this code).
if ($hc_logic != 0) {
if ($c eq 'R') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
substr($word,$n,1) = chr(ord(substr($word,$n,1))>>1);
}
next;
}
if ($c eq 'L') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
substr($word,$n,1) = chr((ord(substr($word,$n,1))<<1)&0xFF);
}
next;
}
if ($c eq '-') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
substr($word,$n,1) = chr(ord(substr($word,$n,1))-1);
}
next;
}
} else {
if ($c eq 'R') { $word = keyboard_right($word); next; }
if ($c eq 'L') { $word = keyboard_left($word); next; }
if ($c eq '-') {
++$i;
$c = $rc[$i];
if ($c eq ':') {
next; # this one actually is done and correct, lol.
}
# these are place holders now, until I can figure them out.
if ($c eq 'c') { next; }
if ($c eq '8') { next; }
if ($c eq 's') { next; }
if ($c eq 'p') { next; }
if ($c eq 'u') { next; }
if ($c eq 'U') { next; }
if ($c eq '>') { ++$i; next; }
if ($c eq '<') { ++$i; next; }
dbg(1, "unknown length rejection rule: -$c character $c not valid.\n");
next;
}
}
if ($c eq 'o') { # oNX
my $n=get_num_val_raw($rc[++$i],$word);
++$i;
dbg(2, "o$n$rc[$i]\n");
if ($n < length($word)) { substr($word, $n, 1) = $rc[$i]; }
next;
}
if ($c eq 'i') { # iNX
my $n=get_num_val_raw($rc[++$i],$word);
++$i;
if ($n > length($word)) { $word .= $rc[$i]; }
else { substr($word, $n, 0) = $rc[$i]; }
next;
}
if ($c eq 'x') { # xNM
my $n=get_num_val_raw($rc[++$i],$word);
my $m=get_num_val_raw($rc[++$i],$word);
if ($n>length($word)) { $rejected = 1; return ""; }
if ($n+$m>length($word)) { $m = length($word)-$n; }
$word = substr($word, $n, $m);
next;
}
if ($c eq 'O') { # ONM
my $n=get_num_val_raw($rc[++$i],$word);
my $m=get_num_val_raw($rc[++$i],$word);
if ($n>length($word)) { $rejected = 1; return ""; }
if ($n+$m>length($word)) { $m = length($word)-$n; }
substr($word, $n, $m) = "";
next;
}
if ($c eq 's') { # sXY & s?CY
my $chars = "";
if ($rc[++$i] eq "?" && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
++$i;
my $ch = $rc[$i];
$word=replace_chars($word, $ch, $chars);
next;
}
if ($c eq 'D') { # DN
my $pos = get_num_val($rc[++$i], $word);
if ($pos >= 0 && $pos < length($word)+1) {
$word = substr($word, 0,$pos).substr($word, $pos+1,length($word));
}
next;
}
if ($c eq 'x') { # xNM
my $pos = get_num_val_raw($rc[++$i], $word);
my $len = get_num_val_raw($rc[++$i], $word);
if ($pos >= 0 && $pos <= length($word)) {
$word = substr($word, $pos, $len);
} else { return ""; } # this is how jtr does it but it is undefined.
next;
}
if ($c eq 'i') { # iNX
my $pos = get_num_val($rc[++$i], $word);
if ($pos >= 0 && $pos <= length($word)) {
++$i;
substr($word, $pos,0) = $rc[$i];
}
next;
}
if ($c eq 'M') { # M
$M = $word;
next;
}
if ($c eq 'Q') { # Q
if ($M eq $word) {
$rejected = 1;
return "";
}
next;
}
if ($c eq '!') { # !X !?C (rejection)
my $chars;
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (find_any_chars($word, $chars)) {
$rejected = 1;
return "";
}
next;
}
if ($c eq '/') { # /X /?C (rejection) reject UNLESS it contains.
my $chars;
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (!find_any_chars($word, $chars)) {
$rejected = 1;
$p_num = length;
return "";
}
$p_num = find_first_char(0, $word, $chars);
next;
}
if ($c eq '=') { # =NX =N?C (rejection)
my $chars;
my $pos = get_num_val($rc[++$i], $word);
if ($pos >= 0 && $pos <= length($word)) {
my $w = substr($word, $pos, 1);
if ($rc[++$i] eq '?') { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (!find_any_chars($w, $chars)) {
$rejected = 1;
return "";
}
}
next;
}
if ($c eq '(') { # (X (?C (rejection)
my $chars;
if (length($word)==0) { $rejected = 1; return ""; }
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (!find_any_chars(substr($word,0,1), $chars)) {
$rejected = 1;
return "";
}
next;
}
if ($c eq ')') { # )X )?C (rejection)
my $chars;
if (length($word)==0) { $rejected = 1; return ""; }
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (!find_any_chars(substr($word,length($word)-1,1), $chars)) {
$rejected = 1;
return "";
}
next;
}
if ($c eq '%') { # %NX %N?C (rejection)
my $chars;
my $n = get_num_val($rc[++$i], $word);
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
if (find_any_chars($word, $chars) < $n) {
$rejected = 1;
$p_num = length;
return "";
}
my $fnd = 0;
$p_num = 0;
while ($fnd < $n) {
$p_num = find_first_char($p_num, $word, $chars);
++$fnd;
}
next;
}
if ($c eq 'X') { # XNMI
my $posM = get_num_val($rc[++$i], $M); # note using $M not $word.
my $len = get_num_val($rc[++$i], $M);
my $posI = get_num_val($rc[++$i], $word);
if ($posM >= 0 && $len > 0 && $posI >= 0) {
substr($word, $posI, 0) = substr($M, $posM, $len);
}
next;
}
if ($c eq 'o') { # oNX
my $pos = get_num_val($rc[++$i], $word);
if ($pos >= 0 && $pos < length($word)) {
++$i;
substr($word, $pos,1) = $rc[$i];
}
next;
}
if ($c eq 'T') { # TN (toggle case of letter at N)
my $pos = get_num_val($rc[++$i], $word);
if ($pos >= 0) {
my $c = substr($word, $pos, 1);
if (ord($c) >= ord('a') && ord($c) <= ord('z')) { substr($word, $pos, 1) = uc $c; }
elsif (ord($c) >= ord('A') && ord($c) <= ord('Z')) { substr($word, $pos, 1) = lc $c; }
}
next;
}
if ($c eq '@') { # @X & @?C
my $chars = "";
if ($rc[++$i] eq "?" && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
$word=purge($word, $chars);
next;
}
if ($c eq 'A') { # AN"STR" with de-ESC in STR
my $pos = get_num_val($rc[++$i], $word);
if ($pos < 0) {next;}
my $delim = $rc[++$i];
my $s = "";
while ($rc[$i+1] ne $delim) {
if ($rc[$i] eq '\\' && $rc[$i+1] eq "x") {
# \xhh escape, replace with 'real' character
$i += 2;
my $s = $rc[++$i]; $s .= $rc[$i];
($rc[$i]) = sscanf($s, "%X");
$rc[$i] = chr($rc[$i]);
}
$s .= $rc[++$i];
}
++$i;
substr($word, $pos, 0) = $s;
next;
}
if ($c eq 'v') { # vVNM numeric handling
# first update $l_num
$l_num = length($word);
my $V = $rc[++$i];
my $N = get_num_val_raw($rc[++$i], $word);
my $M = get_num_val_raw($rc[++$i], $word);
$nums{$V} = $N-$M;
next;
}
# hashcat rules.
if ($c eq 'z') {
my $n=get_num_val_raw($rc[++$i],$word);
if (length($word) > 0) {
while ($n-- > 0) {
$word = substr($word, 0, 1) . $word;
}
}
next;
}
if ($c eq 'Z') {
my $n=get_num_val_raw($rc[++$i],$word);
if (length($word) > 0) {
while ($n-- > 0) {
$word .= substr($word, length($word)-1, 1);
}
}
next;
}
if ($c eq '6') {
$word = $M.$word;
next;
}
if ($c eq '4') {
$word .= $M;
next;
}
if ($c eq 'q') {
my $p;
my $s = "";
for ($p = 0; $p < length($word); $p++) {
$s .= substr($word, $p, 1).substr($word, $p, 1);
}
$word = $s;
next;
}
if ($c eq '.') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)-1) {
substr($word,$n,1) = substr($word,$n+1,1);
}
next;
}
if ($c eq ',') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word) && $n > 0) {
substr($word,$n,1) = substr($word,$n-1,1);
}
next;
}
if ($c eq 'k') {
if (length($word)>1) {
substr($word,0,2) = substr($word,1,1).substr($word,0,1);
}
next;
}
if ($c eq 'K') {
if (length($word)>1) {
substr($word,length($word)-2) = substr($word,length($word)-1,1).substr($word,length($word)-2,1);
}
next;
}
if ($c eq '*') {
my $n=get_num_val_raw($rc[++$i],$word);
my $m=get_num_val_raw($rc[++$i],$word);
if ($n < length($word) && $m < length($word)) {
my $c = substr($word,$n, 1);
substr($word,$n, 1) = substr($word,$m, 1);
substr($word,$m, 1) = $c;
}
next;
}
if ($c eq '+') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
substr($word,$n,1) = chr((ord(substr($word,$n,1))+1)&0xFF);
}
next;
}
if ($c eq 'y') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
$word = substr($word,0,$n).$word;
}
next;
}
if ($c eq 'Y') {
my $n=get_num_val_raw($rc[++$i],$word);
if ($n < length($word)) {
$word .= substr($word,length($word)-$n);
}
next;
}
if ($c eq 'E') {
$word = lc $word;
substr($word, 0, 1) = uc substr($word, 0, 1);
my $pos = index($word, ' ');
while ($pos >= 0) {
++$pos;
substr($word, $pos, 1) = uc substr($word, $pos, 1);
$pos = index($word, ' ', $pos);
}
next;
}
if ($c eq 'e') {
my $chars;
if ($rc[++$i] eq '?' && $hc_logic==0) { $chars = get_class($rc[++$i]); }
else { $chars = $rc[$i]; }
$word = lc $word;
substr($word, 0, 1) = uc substr($word, 0, 1);
for (my $i = 0; $i < length($chars); ++$i) {
my $c = substr($chars, $i, 1);
my $pos = index($word, $c);
while ($pos >= 0) {
++$pos;
substr($word, $pos, 1) = uc substr($word, $pos, 1);
$pos = index($word, $c, $pos);
}
}
next;
}
print "\nDo not know how to handle character $c in $rule\n";
exit(-1);
}
if (length($word) > 125) { return substr($word, 0, 125); }
dbg(2, "resultant word after rule $rule is: $word\n");
return $word;
}
sub rotl {
my $w = $_[0];
$w = substr($w, 1, length($w)).substr($w, 0, 1);
return $w;
}
sub rotr {
my $w = $_[0];
$w = substr($w, length($w)-1, 1).substr($w, 0, length($w)-1);
return $w;
}
sub get_class {
my ($c) = @_;
if ($c eq '?') { dbg(2,"Doing get class of ?\n"); return $cclass{'?'}; }
return $cclass{$c};
}
sub get_num_val_raw { my ($p, $w, $dont_warn) = (@_);
#0...9 for 0...9
#A...Z for 10...35
#* for max_length
#- for (max_length - 1)
#+ for (max_length + 1)
#a...k user-defined numeric variables (with the "v" command)
#l initial or updated word's length (updated whenever "v" is used)
#m initial or memorized word's last character position
#p position of the character last found with the "/" or "%" commands
#z "infinite" position or length (beyond end of word)
if (ord($p) >= ord("0") && ord($p) <= ord('9')) {return ord($p)-ord('0');}
if (ord($p) >= ord("A") && ord($p) <= ord('Z')) {return ord($p)-ord('A')+10;}
if ($p eq '*') { return $rules_max_length; }
if ($p eq '-') { return $rules_max_length-1; }
if ($p eq '+') { return $rules_max_length+1; }
if (index('abcdefghijk',$p)>-1) { return $nums{$p}; }
if ($p eq 'z') {return length($w);}
if ($p eq 'l') { return $l_num; }
if ($p eq 'p') { return $p_num; }
if ($p eq 'm') { my $m = length($M); if ($m>0){$m-=1;} return $m; }
if (!defined $dont_warn || $dont_warn < 1) {
print "ERROR, $p is NOT a valid length item\n";
}
return -1;
}
sub get_num_val { my ($p, $w) = (@_);
$p = get_num_val_raw($p, $w);
if ($p > length($w)) { return -1; }
return $p;
}
sub esc_remove { my ($w) = (@_);
my $s = "";
my $i = 0;
my @ch = split('', $w);
while ($i < scalar @ch) {
if ($ch[$i] eq '\\' && $i+1 < scalar @ch) {++$i;}
$s .= $ch[$i];
++$i;
}
return $s;
}
sub get_items {
my ($s, $pos, $pos2, $esc_r) = (@_);
$_[2] = index($s, ']', $pos);
if ($_[2] < 0) { return ""; }
while ($pos < $_[2] && substr($s, $_[2]-1, 1) eq "\\") {
$_[2] = index($s, ']', $_[2]+1);
}
if ($pos+2 > $_[2]) { return ""; }
if ($pos+2 == $_[2]) {
# handle a 1 byte group [x] should return "x";
$s = substr($s, $pos+1, 1);
return $s;
}
$s = substr($s, $pos+1, $_[2]-$pos-1);
# remove escapes here \v and \xHH
my $idx = index($s, '\\x');
while ($idx > -1) {
my $n = substr($s, $idx+2, 2);
my $v = hex($n);
substr($s, $idx, 4) = chr($v);
$idx = index($s, '\\x', $idx+1);
}
$idx = index($s, '\\');
while ($idx > -1) {
# remove all \C except for \- We have to keep that one.
if (substr($s, $idx, 2) ne '\\-') {
substr($s, $idx, 2) = substr($s, $idx+1, 1);
} else { ++$idx; }
if (substr($s, $idx, 1) eq '\\') { ++$idx; }
$idx = index($s, '\\', $idx);
}
# now $s is raw characters in the range, no escapes.
my @ch = split('', $s);
# convert ranges into 'raw' values. de-escape values (i.e. \\ or \[ become \ or [ )
# note, we do not check for some invalid ranges, like [-b] or [ab-] or [z-a]
my $i = 0;
my $chars = "";
for ($i = 0; $i < length($s); ++$i) {
if ($i>0 && $ch[$i] eq '-') {
dbg(4, "doing range fix for $ch[$i-1]-$ch[$i+1]\n");
if (ord($ch[$i-1]) > ord($ch[$i+1])) {
# jumbo john handles [6-0][9-0] also (i.e. count down).
# note, I do not think core handles this!!!
for (my $c = ord($ch[$i-1])-1; $c >= ord($ch[$i+1]); --$c) {
$chars .= chr($c);
}
} else {
# normal order
for (my $c = ord($ch[$i-1])+1; $c <= ord($ch[$i+1]); ++$c) {
$chars .= chr($c);
}
}
++$i;
} else {
if ($ch[$i] eq '\\' && $ch[$i+1] eq '-') { ++$i; }
$chars .= $ch[$i];
}
}
if (defined($esc_r) && $esc_r) {
# if magic \r was seen, we do NOT unique the group.
dbg(2, "get_item returning (no-dedupe): chars=$chars\n");
return $chars;
}
# we must 'unique' this data.
$chars = reverse $chars;
$chars =~ s/(.)(?=.*?\1)//g;
$chars = reverse $chars;
dbg(2, "get_item returning: chars=$chars\n");
return $chars;
}
sub hexify_space_in_groups { my ($w) = (@_);
if (index($w, ' ') == -1) { return $w; }
my $pos = index($w, '[');
while ($pos > -1) {
if ($pos > 0 && substr($w, $pos-1, 1) eq '\\') {
$pos = index($w, '[', $pos+1);
next;
}
my $pos2 = index($w, ']', $pos);
while ($pos2 > 0 && substr($w, $pos2-1, 1) eq '\\') {
$pos2 = index($w, ']', $pos2+1);
next;
}
if ($pos2 > 0) {
my $s = substr($w, $pos, $pos2-$pos);
$s =~ s/ /\\x20/g;
substr($w, $pos, $pos2-$pos) = $s;
$pos += length($s);
$pos = index($w, '[', $pos);
} else { $pos = -1; }
}
return $w;
}
# preprocessor. We have an array of rules that get built. Then
# we keep count of which have been handled, so we eat them one
# at a time, in order.
sub jtr_rule_pp_init { my ($pre_pp_rule, $len, $max_cnt, $hc_logic) = (@_);
$pp_idx = 0;
if (defined $hc_logic && $hc_logic != 0) {
@pp_rules = ();
$_[2] = 1;
if ($debug>2||$stdout_rules) {
foreach my $s (@pp_rules) {
print "$s\n";
}
if ($debug>3||$stdout_rules==1) { exit(0); }
}
return $pre_pp_rule;
}
# removed all stray spaces. HOWEVER, we must preserve them within groups, so we
# first find all spaces in groups, and replace them with \x20 and then purge spaces.
my $stripped = hexify_space_in_groups($pre_pp_rule);
#$stripped = purge($stripped,' ');
# They must ALSO need to be preserved for any character in character based commands $^ios@!/=()%e
my $p = index($stripped, ' ');
while ($p != -1) {
if ($p > 0) {
if (index('$^s@!/()e', substr($stripped, $p-1, 1)) != -1) {
#substr($stripped, $p, 1) = '[\\x20]';
$p = index($stripped, ' ', $p+1);
next;
}
}
if ($p > 1) {
if (index('sio=%', substr($stripped, $p-2, 1)) != -1) {
#substr($stripped, $p, 1) = '[\\x20]';
$p = index($stripped, ' ', $p+1);
next;
}
}
substr($stripped, $p, 1) = '';
$p = index($stripped, ' ', $p);
}
#print "stripped = $stripped\n";
# normalize all \r\p[] or \r\px[] into \p\r[] and \px\r[]
$stripped =~ s/\\r\\p\[/\\p\\r\[/g;
$stripped =~ s/\\r\\p([0-9])\[/\\p$1\\r\[/g;
# strip out \\ etc outside of groups []
if (!defined($len) || $len==0) {$rules_max_length = 0;}
else {$rules_max_length = $len; }
@pp_rules = ();
if (defined $max_cnt) {
my $cnt = pp_rule_cnt($stripped);
if ($max_cnt && $cnt > $max_cnt) { $_[2] = $cnt; return ""; }
}
dbg(4, "calling pp_rule() to prepare our rule:\n\n$pre_pp_rule\n\n");
pp_rule($stripped, 0, 0);
dbg(4, "There were ".scalar @pp_rules." created\n");
# do a final strip of all \ values from the finished rule.
my @p=();
foreach my $s (@pp_rules) {
dbg(3, " before esc_remove: $s\n");
$s = esc_remove($s);
dbg(3, " after esc_remove: $s\n");
push(@p,$s);
}
@pp_rules = @p;
if ($debug>2||$stdout_rules) {
foreach my $s (@pp_rules) {
print "$s\n";
}
if ($debug>3||$stdout_rules==1) { exit(0); }
}
if (scalar @pp_rules > 0) {
return $pp_rules[0];
}
return "";
}
sub jtr_rule_pp_next { my () = (@_);
if (scalar @pp_rules == $pp_idx) { return ""; }
return $pp_rules[++$pp_idx];
}
sub handle_backref { my ($gnum, $c, $s, $total, $idx) = (@_);
my $i; my $i2; my $n;
# find any \$gnum and replace with $c
$s =~ s/\\$gnum/$c/g;
# find any \p$gnum[] and replace with the $gnum from its group
$i = index($s, "\\p$gnum"."[");
while ($i >= 0) {
my $chars = get_items($s, $i+3, $i2);
if ($i2 == -1) { print STDERR "invalid \\p$gnum"."[..] found in rule\n"; die; }
my @a = split('', $chars);
my $c;
my $i3 = $idx;
$i3 %= scalar @a;
substr($s, $i, $i2-$i+1) = $a[$i3];
$i = index($s, "\\p$gnum"."[");
}
# find any \p$gnum\r[] and replace with the $gnum from its non-dedup'd group
$i = index($s, "\\p$gnum\\r[");
while ($i >= 0) {
my $chars = get_items($s, $i+5, $i2, 1);
if ($i2 == -1) { print STDERR "invalid \\p$gnum\\r[..] found in rule\n"; die; }
my @a = split('', $chars);
my $c;
my $i3 = $idx;
$i3 %= scalar @a;
substr($s, $i, $i2-$i+1) = $a[$i3];
$i = index($s, "\\p$gnum\\r[");
}
# now that all the stray ['s are gone, we can look for \p[] \p\r[] and \0
# NOTE, there must not be ANY groups ahead of this, else we leave it for later.
$i = index($s, "\\p[");
while ($i >= 0) {
#print"here $s : ".substr($s,$i)."\n";
$i2 = index($s, '[');
if ($i > 0 && $i2 >= 0 && $i2 < $i) {
while ($i2 < $i) {
if ($i2 == 0) { $i = -1; }
elsif (substr($s, $i2-1, 1) eq '\\') {
$i2 = index($s, '[', $i2+1);
} else {
$i = -1;
}
}
}
if ($i > 0) {
my $chars = get_items($s, $i+2, $i2);
if ($i2 == -1) { print STDERR "invalid \\p0[..] found in rule\n"; die; }
my @a = split('', $chars);
my $c;
my $i3 = $idx;
$i3 %= scalar @a;
substr($s, $i, $i2-$i+1) = $a[$i3];
$i = index($s, "\\p[");
}
}
# find any \p\r[ and step them. The step is $total
$i = index($s, "\\p\\r[");
while ($i >= 0) {
$i2 = index($s, '[');
if ($i > 0 && $i2 >= 0 && $i2 < $i) {
while ($i2 < $i) {
if ($i2 == 0) { $i = -1; }
elsif (substr($s, $i2-1, 1) eq '\\') {
$i2 = index($s, '[', $i2+1);
} else {
$i = -1;
}
}
}
if ($i >= 0) {
my $chars = get_items($s, $i+4, $i2, 1);
#print "in \\p\\r[ and found $chars with total=$total\n";
if ($i2 == -1) { print STDERR "invalid \\p\\r[] found in rule\n"; die; }
my @a = split('', $chars);
my $c;
$total %= scalar @a;
substr($s, $i, $i2-$i+1) = $a[$total];
$i = index($s, "\\p\\r[");
}
}
# find any \0 before the next [ and replace with $c
$i = index($s, "\\0");
#print "i for \\0 = $i (s=$s)\n";
while ($i >= 0) {
$i2 = index($s, '[');
if ($i > 0 && $i2 >= 0 && $i2 < $i) {
while ($i2 < $i) {
if ($i2 == 0) { $i = -1; }
elsif (substr($s, $i2-1, 1) eq '\\') {
$i2 = index($s, '[', $i2+1);
} else {
$i = -1;
}
}
}
if ($i >= 0) {
substr($s, $i, 2) = $c;
$i = index($s, "\\0");
}
}
return $s;
}
sub handle_rule_rej {
my $rule = $_[0];
dbg(3, "Entering handle_rule_rej rule=$rule\n");
# remove our 3 hacks for problem letters
$rule =~ s/\\([ -~])``~/\\$1/g;
dbg(3, "Leaving handle_rule_rej rule=$rule\n");
if (substr($rule, 0, 1) ne '-') { return $rule;}
my $v = substr($rule,1,1);
if ($v eq ':') { return substr($rule, 2); }