4 use vars qw($VERSION @EXPORT_OK @ISA $EBCDIC @A2E @E2A);
7 @EXPORT_OK = qw(rearrange rearrange_header make_attributes unescape escape
8 expires ebcdic2ascii ascii2ebcdic);
12 $EBCDIC = "\t" ne "\011";
13 # (ord('^') == 95) for codepage 1047 as on os390, vmesa
15 0, 1, 2, 3, 55, 45, 46, 47, 22, 5, 21, 11, 12, 13, 14, 15,
16 16, 17, 18, 19, 60, 61, 50, 38, 24, 25, 63, 39, 28, 29, 30, 31,
17 64, 90,127,123, 91,108, 80,125, 77, 93, 92, 78,107, 96, 75, 97,
18 240,241,242,243,244,245,246,247,248,249,122, 94, 76,126,110,111,
19 124,193,194,195,196,197,198,199,200,201,209,210,211,212,213,214,
20 215,216,217,226,227,228,229,230,231,232,233,173,224,189, 95,109,
21 121,129,130,131,132,133,134,135,136,137,145,146,147,148,149,150,
22 151,152,153,162,163,164,165,166,167,168,169,192, 79,208,161, 7,
23 32, 33, 34, 35, 36, 37, 6, 23, 40, 41, 42, 43, 44, 9, 10, 27,
24 48, 49, 26, 51, 52, 53, 54, 8, 56, 57, 58, 59, 4, 20, 62,255,
25 65,170, 74,177,159,178,106,181,187,180,154,138,176,202,175,188,
26 144,143,234,250,190,160,182,179,157,218,155,139,183,184,185,171,
27 100,101, 98,102, 99,103,158,104,116,113,114,115,120,117,118,119,
28 172,105,237,238,235,239,236,191,128,253,254,251,252,186,174, 89,
29 68, 69, 66, 70, 67, 71,156, 72, 84, 81, 82, 83, 88, 85, 86, 87,
30 140, 73,205,206,203,207,204,225,112,221,222,219,220,141,142,223
33 0, 1, 2, 3,156, 9,134,127,151,141,142, 11, 12, 13, 14, 15,
34 16, 17, 18, 19,157, 10, 8,135, 24, 25,146,143, 28, 29, 30, 31,
35 128,129,130,131,132,133, 23, 27,136,137,138,139,140, 5, 6, 7,
36 144,145, 22,147,148,149,150, 4,152,153,154,155, 20, 21,158, 26,
37 32,160,226,228,224,225,227,229,231,241,162, 46, 60, 40, 43,124,
38 38,233,234,235,232,237,238,239,236,223, 33, 36, 42, 41, 59, 94,
39 45, 47,194,196,192,193,195,197,199,209,166, 44, 37, 95, 62, 63,
40 248,201,202,203,200,205,206,207,204, 96, 58, 35, 64, 39, 61, 34,
41 216, 97, 98, 99,100,101,102,103,104,105,171,187,240,253,254,177,
42 176,106,107,108,109,110,111,112,113,114,170,186,230,184,198,164,
43 181,126,115,116,117,118,119,120,121,122,161,191,208, 91,222,174,
44 172,163,165,183,169,167,182,188,189,190,221,168,175, 93,180,215,
45 123, 65, 66, 67, 68, 69, 70, 71, 72, 73,173,244,246,242,243,245,
46 125, 74, 75, 76, 77, 78, 79, 80, 81, 82,185,251,252,249,250,255,
47 92,247, 83, 84, 85, 86, 87, 88, 89, 90,178,212,214,210,211,213,
48 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,179,219,220,217,218,159
51 if ($EBCDIC && ord('^') == 106) { # as in the BS2000 posix-bc coded character set
52 $A2E[91] = 187; $A2E[92] = 188; $A2E[94] = 106; $A2E[96] = 74;
53 $A2E[123] = 251; $A2E[125] = 253; $A2E[126] = 255; $A2E[159] = 95;
54 $A2E[162] = 176; $A2E[166] = 208; $A2E[168] = 121; $A2E[172] = 186;
55 $A2E[175] = 161; $A2E[217] = 224; $A2E[219] = 221; $A2E[221] = 173;
58 $E2A[74] = 96; $E2A[95] = 159; $E2A[106] = 94; $E2A[121] = 168;
59 $E2A[161] = 175; $E2A[173] = 221; $E2A[176] = 162; $E2A[186] = 172;
60 $E2A[187] = 91; $E2A[188] = 92; $E2A[192] = 249; $E2A[208] = 166;
61 $E2A[221] = 219; $E2A[224] = 217; $E2A[251] = 123; $E2A[253] = 125;
64 elsif ($EBCDIC && ord('^') == 176) { # as in codepage 037 on os400
65 $A2E[10] = 37; $A2E[91] = 186; $A2E[93] = 187; $A2E[94] = 176;
66 $A2E[133] = 21; $A2E[168] = 189; $A2E[172] = 95; $A2E[221] = 173;
68 $E2A[21] = 133; $E2A[37] = 10; $E2A[95] = 172; $E2A[173] = 221;
69 $E2A[176] = 94; $E2A[186] = 91; $E2A[187] = 93; $E2A[189] = 168;
72 # Smart rearrangement of parameters to allow named parameter
73 # calling. We do the rearrangement if:
74 # the first parameter begins with a -
77 my ($order,@param) = @_;
78 my ($result, $leftover) = _rearrange_params( $order, @param );
79 push @$result, make_attributes( $leftover, defined $CGI::Q ? $CGI::Q->{escape} : 1 )
84 sub rearrange_header {
85 my ($order,@param) = @_;
87 my ($result,$leftover) = _rearrange_params( $order, @param );
88 push @$result, make_attributes( $leftover, 0, 1 ) if keys %$leftover;
93 sub _rearrange_params {
94 my($order,@param) = @_;
95 return [] unless @param;
97 if (ref($param[0]) eq 'HASH') {
98 @param = %{$param[0]};
101 unless (defined($param[0]) && substr($param[0],0,1) eq '-');
104 # map parameters into positional indices
108 foreach (ref($_) eq 'ARRAY' ? @$_ : $_) { $pos{lc($_)} = $i; }
112 my (@result,%leftover);
113 $#result = $#$order; # preextend
115 my $key = lc(shift(@param));
117 if (exists $pos{$key}) {
118 $result[$pos{$key}] = shift(@param);
120 $leftover{$key} = shift(@param);
124 return \@result, \%leftover;
127 sub make_attributes {
129 return () unless $attr && ref($attr) && ref($attr) eq 'HASH';
130 my $escape = shift || 0;
131 my $do_not_quote = shift;
133 my $quote = $do_not_quote ? '' : '"';
136 foreach (keys %{$attr}) {
138 $key=~s/^\-//; # get rid of initial - if present
140 # old way: breaks EBCDIC!
141 # $key=~tr/A-Z_/a-z-/; # parameters are lower case, use dashes
143 ($key="\L$key") =~ tr/_/-/; # parameters are lower case, use dashes
145 my $value = $escape ? simple_escape($attr->{$_}) : $attr->{$_};
146 push(@att,defined($attr->{$_}) ? qq/$key=$quote$value$quote/ : qq/$key/);
152 return unless defined(my $toencode = shift);
153 $toencode =~ s{&}{&}gso;
154 $toencode =~ s{<}{<}gso;
155 $toencode =~ s{>}{>}gso;
156 $toencode =~ s{\"}{"}gso;
157 # Doesn't work. Can't work. forget it.
158 # $toencode =~ s{\x8b}{‹}gso;
159 # $toencode =~ s{\x9b}{›}gso;
168 utf8::encode($u); # drop utf8 flag
172 return sprintf("%c", $c);
173 } elsif ($c < 0x800) {
174 return sprintf("%c%c", 0xc0 | ($c >> 6), 0x80 | ($c & 0x3f));
175 } elsif ($c < 0x10000) {
176 return sprintf("%c%c%c",
178 0x80 | (($c >> 6) & 0x3f),
179 0x80 | ( $c & 0x3f));
180 } elsif ($c < 0x200000) {
181 return sprintf("%c%c%c%c",
183 0x80 | (($c >> 12) & 0x3f),
184 0x80 | (($c >> 6) & 0x3f),
185 0x80 | ( $c & 0x3f));
186 } elsif ($c < 0x4000000) {
187 return sprintf("%c%c%c%c%c",
189 0x80 | (($c >> 18) & 0x3f),
190 0x80 | (($c >> 12) & 0x3f),
191 0x80 | (($c >> 6) & 0x3f),
192 0x80 | ( $c & 0x3f));
194 } elsif ($c < 0x80000000) {
195 return sprintf("%c%c%c%c%c%c",
197 0x80 | (($c >> 24) & 0x3f),
198 0x80 | (($c >> 18) & 0x3f),
199 0x80 | (($c >> 12) & 0x3f),
200 0x80 | (($c >> 6) & 0x3f),
201 0x80 | ( $c & 0x3f));
203 return utf8_chr(0xfffd);
207 # unescape URL-encoded data
209 shift() if @_ > 0 and (ref($_[0]) || (defined $_[1] && $_[0] eq $CGI::DefaultClass));
210 my $todecode = shift;
211 return undef unless defined($todecode);
212 $todecode =~ tr/+/ /; # pluses become spaces
213 $EBCDIC = "\t" ne "\011";
215 $todecode =~ s/%([0-9a-fA-F]{2})/chr $A2E[hex($1)]/ge;
217 # handle surrogate pairs first -- dankogai
219 %u([Dd][89a-bA-B][0-9a-fA-F]{2}) # hi
220 %u([Dd][c-fC-F][0-9a-fA-F]{2}) # lo
224 + (hex($1) - 0xD800) * 0x400
228 $todecode =~ s/%(?:([0-9a-fA-F]{2})|u([0-9a-fA-F]{4}))/
229 defined($1)? chr hex($1) : utf8_chr(hex($2))/ge;
236 shift() if @_ > 1 and ( ref($_[0]) || (defined $_[1] && $_[0] eq $CGI::DefaultClass));
237 my $toencode = shift;
238 return undef unless defined($toencode);
239 $toencode = eval { pack("C*", unpack("U0C*", $toencode))} || pack("C*", unpack("C*", $toencode));
241 # force bytes while preserving backward compatibility -- dankogai
242 # but commented out because it was breaking CGI::Compress -- lstein
243 # $toencode = eval { pack("U*", unpack("U0C*", $toencode))} || pack("C*", unpack("C*", $toencode));
246 $toencode=~s/([^a-zA-Z0-9_.~-])/uc sprintf("%%%02x",$E2A[ord($1)])/eg;
248 $toencode=~s/([^a-zA-Z0-9_.~-])/uc sprintf("%%%02x",ord($1))/eg;
253 # This internal routine creates date strings suitable for use in
254 # cookies and HTTP headers. (They differ, unfortunately.)
255 # Thanks to Mark Fisher for this.
257 my($time,$format) = @_;
260 my(@MON)=qw/Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec/;
261 my(@WDAY) = qw/Sun Mon Tue Wed Thu Fri Sat/;
263 # pass through preformatted dates for the sake of expire_calc()
264 $time = expire_calc($time);
265 return $time unless $time =~ /^\d+$/;
267 # make HTTP/cookie date string from GMT'ed time
268 # (cookies use '-' as date separator, HTTP uses ' ')
270 $sc = '-' if $format eq "cookie";
271 my($sec,$min,$hour,$mday,$mon,$year,$wday) = gmtime($time);
273 return sprintf("%s, %02d$sc%s$sc%04d %02d:%02d:%02d GMT",
274 $WDAY[$wday],$mday,$MON[$mon],$year,$hour,$min,$sec);
277 # This internal routine creates an expires time exactly some number of
278 # hours from the current time. It incorporates modifications from
288 # format for time can be in any of the forms...
289 # "now" -- expire immediately
290 # "+180s" -- in 180 seconds
291 # "+2m" -- in 2 minutes
292 # "+12h" -- in 12 hours
294 # "+3M" -- in 3 months
295 # "+2y" -- in 2 years
296 # "-3m" -- 3 minutes ago(!)
297 # If you don't supply one of these forms, we assume you are
298 # specifying the date yourself
300 if (!$time || (lc($time) eq 'now')) {
302 } elsif ($time=~/^\d+/) {
304 } elsif ($time=~/^([+-]?(?:\d+|\d*\.\d*))([smhdMy])/) {
305 $offset = ($mult{$2} || 1)*$1;
309 return (time+$offset);
314 $data =~ s/(.)/chr $E2A[ord($1)]/ge;
320 $data =~ s/(.)/chr $A2E[ord($1)]/ge;
330 CGI::Util - Internal utilities used by CGI module
338 no public subroutines
340 =head1 AUTHOR INFORMATION
342 Copyright 1995-1998, Lincoln D. Stein. All rights reserved.
344 This library is free software; you can redistribute it and/or modify
345 it under the same terms as Perl itself.
347 Address bug reports and comments to: lstein@cshl.org. When sending
348 bug reports, please provide the version of CGI.pm, the version of
349 Perl, the name and version of your Web server, and the name and
350 version of the operating system you are using. If the problem is even
351 remotely browser dependent, please provide information about the
352 affected browers as well.