4 use vars qw($VERSION @EXPORT_OK @ISA $EBCDIC @A2E @E2A);
7 @EXPORT_OK = qw(rearrange 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; $E2A[189] = 168;
72 # Smart rearrangement of parameters to allow named parameter
73 # calling. We do the rearangement if:
74 # the first parameter begins with a -
76 my($order,@param) = @_;
77 return () unless @param;
79 if (ref($param[0]) eq 'HASH') {
80 @param = %{$param[0]};
83 unless (defined($param[0]) && substr($param[0],0,1) eq '-');
86 # map parameters into positional indices
90 foreach (ref($_) eq 'ARRAY' ? @$_ : $_) { $pos{lc($_)} = $i; }
94 my (@result,%leftover);
95 $#result = $#$order; # preextend
97 my $key = lc(shift(@param));
99 if (exists $pos{$key}) {
100 $result[$pos{$key}] = shift(@param);
102 $leftover{$key} = shift(@param);
106 push (@result,make_attributes(\%leftover,defined $CGI::Q ? $CGI::Q->{escape} : 1)) if %leftover;
110 sub make_attributes {
112 return () unless $attr && ref($attr) && ref($attr) eq 'HASH';
113 my $escape = shift || 0;
115 foreach (keys %{$attr}) {
117 $key=~s/^\-//; # get rid of initial - if present
119 # old way: breaks EBCDIC!
120 # $key=~tr/A-Z_/a-z-/; # parameters are lower case, use dashes
122 ($key="\L$key") =~ tr/_/-/; # parameters are lower case, use dashes
124 my $value = $escape ? simple_escape($attr->{$_}) : $attr->{$_};
125 push(@att,defined($attr->{$_}) ? qq/$key="$value"/ : qq/$key/);
131 return unless defined(my $toencode = shift);
132 $toencode =~ s{&}{&}gso;
133 $toencode =~ s{<}{<}gso;
134 $toencode =~ s{>}{>}gso;
135 $toencode =~ s{\"}{"}gso;
136 # Doesn't work. Can't work. forget it.
137 # $toencode =~ s{\x8b}{‹}gso;
138 # $toencode =~ s{\x9b}{›}gso;
147 utf8::encode($u); # drop utf8 flag
151 return sprintf("%c", $c);
152 } elsif ($c < 0x800) {
153 return sprintf("%c%c", 0xc0 | ($c >> 6), 0x80 | ($c & 0x3f));
154 } elsif ($c < 0x10000) {
155 return sprintf("%c%c%c",
157 0x80 | (($c >> 6) & 0x3f),
158 0x80 | ( $c & 0x3f));
159 } elsif ($c < 0x200000) {
160 return sprintf("%c%c%c%c",
162 0x80 | (($c >> 12) & 0x3f),
163 0x80 | (($c >> 6) & 0x3f),
164 0x80 | ( $c & 0x3f));
165 } elsif ($c < 0x4000000) {
166 return sprintf("%c%c%c%c%c",
168 0x80 | (($c >> 18) & 0x3f),
169 0x80 | (($c >> 12) & 0x3f),
170 0x80 | (($c >> 6) & 0x3f),
171 0x80 | ( $c & 0x3f));
173 } elsif ($c < 0x80000000) {
174 return sprintf("%c%c%c%c%c%c",
176 0x80 | (($c >> 24) & 0x3f),
177 0x80 | (($c >> 18) & 0x3f),
178 0x80 | (($c >> 12) & 0x3f),
179 0x80 | (($c >> 6) & 0x3f),
180 0x80 | ( $c & 0x3f));
182 return utf8_chr(0xfffd);
186 # unescape URL-encoded data
188 shift() if @_ > 0 and (ref($_[0]) || (defined $_[1] && $_[0] eq $CGI::DefaultClass));
189 my $todecode = shift;
190 return undef unless defined($todecode);
191 $todecode =~ tr/+/ /; # pluses become spaces
192 $EBCDIC = "\t" ne "\011";
194 $todecode =~ s/%([0-9a-fA-F]{2})/chr $A2E[hex($1)]/ge;
196 # handle surrogate pairs first -- dankogai
198 %u([Dd][89a-bA-B][0-9a-fA-F]{2}) # hi
199 %u([Dd][c-fC-F][0-9a-fA-F]{2}) # lo
203 + (hex($1) - 0xD800) * 0x400
207 $todecode =~ s/%(?:([0-9a-fA-F]{2})|u([0-9a-fA-F]{4}))/
208 defined($1)? chr hex($1) : utf8_chr(hex($2))/ge;
215 shift() if @_ > 1 and ( ref($_[0]) || (defined $_[1] && $_[0] eq $CGI::DefaultClass));
216 my $toencode = shift;
217 return undef unless defined($toencode);
218 $toencode = eval { pack("C*", unpack("U0C*", $toencode))} || pack("C*", unpack("C*", $toencode));
220 # force bytes while preserving backward compatibility -- dankogai
221 # but commented out because it was breaking CGI::Compress -- lstein
222 # $toencode = eval { pack("U*", unpack("U0C*", $toencode))} || pack("C*", unpack("C*", $toencode));
225 $toencode=~s/([^a-zA-Z0-9_.~-])/uc sprintf("%%%02x",$E2A[ord($1)])/eg;
227 $toencode=~s/([^a-zA-Z0-9_.~-])/uc sprintf("%%%02x",ord($1))/eg;
232 # This internal routine creates date strings suitable for use in
233 # cookies and HTTP headers. (They differ, unfortunately.)
234 # Thanks to Mark Fisher for this.
236 my($time,$format) = @_;
239 my(@MON)=qw/Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec/;
240 my(@WDAY) = qw/Sun Mon Tue Wed Thu Fri Sat/;
242 # pass through preformatted dates for the sake of expire_calc()
243 $time = expire_calc($time);
244 return $time unless $time =~ /^\d+$/;
246 # make HTTP/cookie date string from GMT'ed time
247 # (cookies use '-' as date separator, HTTP uses ' ')
249 $sc = '-' if $format eq "cookie";
250 my($sec,$min,$hour,$mday,$mon,$year,$wday) = gmtime($time);
252 return sprintf("%s, %02d$sc%s$sc%04d %02d:%02d:%02d GMT",
253 $WDAY[$wday],$mday,$MON[$mon],$year,$hour,$min,$sec);
256 # This internal routine creates an expires time exactly some number of
257 # hours from the current time. It incorporates modifications from
267 # format for time can be in any of the forms...
268 # "now" -- expire immediately
269 # "+180s" -- in 180 seconds
270 # "+2m" -- in 2 minutes
271 # "+12h" -- in 12 hours
273 # "+3M" -- in 3 months
274 # "+2y" -- in 2 years
275 # "-3m" -- 3 minutes ago(!)
276 # If you don't supply one of these forms, we assume you are
277 # specifying the date yourself
279 if (!$time || (lc($time) eq 'now')) {
281 } elsif ($time=~/^\d+/) {
283 } elsif ($time=~/^([+-]?(?:\d+|\d*\.\d*))([smhdMy])/) {
284 $offset = ($mult{$2} || 1)*$1;
288 return (time+$offset);
293 $data =~ s/(.)/chr $E2A[ord($1)]/ge;
299 $data =~ s/(.)/chr $A2E[ord($1)]/ge;
309 CGI::Util - Internal utilities used by CGI module
317 no public subroutines
319 =head1 AUTHOR INFORMATION
321 Copyright 1995-1998, Lincoln D. Stein. All rights reserved.
323 This library is free software; you can redistribute it and/or modify
324 it under the same terms as Perl itself.
326 Address bug reports and comments to: lstein@cshl.org. When sending
327 bug reports, please provide the version of CGI.pm, the version of
328 Perl, the name and version of your Web server, and the name and
329 version of the operating system you are using. If the problem is even
330 remotely browser dependent, please provide information about the
331 affected browers as well.