| 1 |
package Whatpm::CacheManifest; |
| 2 |
use strict; |
| 3 |
our $VERSION=do{my @r=(q$Revision: 1.50 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
| 4 |
require Message::URI::URIReference; |
| 5 |
|
| 6 |
sub parse_byte_string ($$$$$) { |
| 7 |
require Encode; |
| 8 |
my $s = Encode::decode ('utf-8', $_[1]); |
| 9 |
return $_[0]->_parse (\$s, $_[2], $_[3], $_[4] || sub { |
| 10 |
my %err = @_; |
| 11 |
warn $err{type}, "\n"; |
| 12 |
}); |
| 13 |
} # parse_byte_string |
| 14 |
|
| 15 |
sub parse_char_string ($$$$$) { |
| 16 |
return $_[0]->_parse (\($_[1]), $_[2], $_[3], $_[4] || sub { |
| 17 |
my %err = @_; |
| 18 |
warn $err{type}, "\n"; |
| 19 |
}); |
| 20 |
} # parse_char_string |
| 21 |
|
| 22 |
sub _parse ($$$$$) { |
| 23 |
#my (undef, $input, $manifest_uri, $base_uri, $onerror) = @_; |
| 24 |
|
| 25 |
## NOTE: A manifest MUST be labeled as text/cache-manifest. (This should |
| 26 |
## be checked in upper-level). |
| 27 |
## NOTE: No "MUST" for being UTF-8. |
| 28 |
## NOTE: A |text/cache-manifest| MUST be a cache manifest. |
| 29 |
## NOTE: Newlines MUST be CR/CRLF/LF. (We don't and can't check this.) |
| 30 |
|
| 31 |
my $m_uri = Message::DOM::DOMImplementation->create_uri_reference ($_[2]); |
| 32 |
my $m_scheme = $m_uri->uri_scheme; |
| 33 |
|
| 34 |
my $onerror = $_[4]; |
| 35 |
my $must_level = 'm'; |
| 36 |
my $warn_level = 'w'; |
| 37 |
my $line_number = 1; |
| 38 |
|
| 39 |
## Same scheme/host/port |
| 40 |
my $same_shp = sub { |
| 41 |
## TODO: implement this algorithm correctly! |
| 42 |
|
| 43 |
my $u1 = shift; |
| 44 |
|
| 45 |
unless (lc $u1->uri_scheme eq lc $m_scheme) { |
| 46 |
return 0; |
| 47 |
} |
| 48 |
|
| 49 |
return 0 unless defined $u1->uri_authority; |
| 50 |
return 0 unless defined $m_uri->uri_authority; |
| 51 |
|
| 52 |
return 0 unless $u1->uri_host eq $m_uri->uri_host; |
| 53 |
return 0 unless $u1->uri_port eq $m_uri->uri_port; |
| 54 |
|
| 55 |
return 1; |
| 56 |
}; # $same_shp |
| 57 |
|
| 58 |
## Step 5 |
| 59 |
my $input = $_[1]; |
| 60 |
|
| 61 |
## Step 1: MUST bytes --UTF-8--> characters. |
| 62 |
## NOTE: illegal(s) -> U+FFFD, U+0000 -> U+FFFD |
| 63 |
$$input =~ tr/\x00/\x{FFFD}/; |
| 64 |
|
| 65 |
## Step 2 |
| 66 |
my $explicit_uris = []; |
| 67 |
|
| 68 |
## Step 3 |
| 69 |
my $fallback_uris = {}; |
| 70 |
|
| 71 |
## Step 4 |
| 72 |
my $online_whitelist_uris = []; |
| 73 |
|
| 74 |
## Step 6 |
| 75 |
pos ($$input) = 0; |
| 76 |
|
| 77 |
## Step 7 |
| 78 |
## Skip BOM ## NOTE: MAY in syntax. |
| 79 |
|
| 80 |
## Step 8-10 |
| 81 |
unless ($$input =~ /^CACHE MANIFEST[\x20\x09]*(?![^\x0D\x0A])/gc) { |
| 82 |
$onerror->(type => 'not manifest', level => $must_level, |
| 83 |
line => $line_number, column => 1); ## NOTE: MUST in syntax. |
| 84 |
return; ## Not a manifest. |
| 85 |
} |
| 86 |
|
| 87 |
## Step 11 |
| 88 |
## This is a cache manifest. |
| 89 |
|
| 90 |
## Step 12 |
| 91 |
my $mode = 'explicit'; |
| 92 |
|
| 93 |
## NOTE: MUST be (blank line|comment|section head|data for the current |
| 94 |
## section)*. |
| 95 |
|
| 96 |
## Step 13 |
| 97 |
START_OF_LINE: while (pos $$input < length $$input) { |
| 98 |
$$input =~ /([\x0A\x0D\x20\x09]+)/gc; |
| 99 |
my $v = $1; |
| 100 |
$line_number++ for $v =~ /\x0D\x0A?|\x0D/g; |
| 101 |
|
| 102 |
## Step 14 |
| 103 |
$$input =~ /([^\x0A\x0D]*)/gc; |
| 104 |
my $line = $1; |
| 105 |
|
| 106 |
## Step 15 |
| 107 |
next START_OF_LINE if $line =~ /^#/; |
| 108 |
|
| 109 |
## Step 16 |
| 110 |
$line =~ s/[\x20\x09]+\z//; |
| 111 |
|
| 112 |
if ($line eq 'CACHE:') { |
| 113 |
## Step 17 |
| 114 |
$mode = 'explicit'; |
| 115 |
next START_OF_LINE; |
| 116 |
} elsif ($line eq 'FALLBACK:') { |
| 117 |
## Step 18 |
| 118 |
$mode = 'fallback'; |
| 119 |
next START_OF_LINE; |
| 120 |
} elsif ($line eq 'NETWORK:') { |
| 121 |
## Step 19 |
| 122 |
$mode = 'online whitelist'; |
| 123 |
next START_OF_LINE; |
| 124 |
} |
| 125 |
|
| 126 |
## NOTE: "URIs that are to be fallback pages associated with |
| 127 |
## opportunistic caching namespaces, and those namespaces themselves, |
| 128 |
## MUST be given in fallback sections, with the namespace being the |
| 129 |
## first URI of the data line, and the corresponding fallback page |
| 130 |
## being the second URI. All the other pages to be cached MUST be |
| 131 |
## listed in explicit sections." in writing section can't be tested. |
| 132 |
## NOTE: "URIs that the user agent is to put into the online whitelist |
| 133 |
## MUST all be specified in online whitelist sections." in writing |
| 134 |
## section can't be tested. |
| 135 |
|
| 136 |
## NOTE: "Relative URIs MUST be given relative to the manifest's own URI." |
| 137 |
## requirement in writing section can't be tested. |
| 138 |
|
| 139 |
## Step 20 |
| 140 |
if ($mode eq 'explicit') { |
| 141 |
my $uri = Message::DOM::DOMImplementation->create_uri_reference ($line); |
| 142 |
|
| 143 |
unless ($uri->is_iri_reference_3987) { |
| 144 |
$onerror->(type => 'URI::syntax error:iriref3987', |
| 145 |
level => $must_level, line => $line_number, column => 1, |
| 146 |
value => $line); |
| 147 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 148 |
} |
| 149 |
|
| 150 |
$uri = $uri->get_absolute_reference ($_[3]); |
| 151 |
|
| 152 |
if (defined $uri->uri_fragment) { |
| 153 |
$uri->uri_fragment (undef); |
| 154 |
$onerror->(type => 'URI fragment not allowed', |
| 155 |
level => $must_level, line => $line_number, column => 1, |
| 156 |
value => $line); |
| 157 |
## NOTE: MUST in writing section. |
| 158 |
} |
| 159 |
|
| 160 |
my $scheme = $uri->uri_scheme; |
| 161 |
unless (defined $scheme and $scheme eq $m_scheme) { |
| 162 |
$onerror->(type => 'different scheme from manifest', |
| 163 |
level => $warn_level, line => $line_number, column => 1, |
| 164 |
value => $uri->uri_reference); |
| 165 |
next START_OF_LINE; |
| 166 |
} |
| 167 |
## ISSUE: case-insensitive? |
| 168 |
|
| 169 |
push @$explicit_uris, $uri->uri_reference; |
| 170 |
} elsif ($mode eq 'fallback') { |
| 171 |
my ($p1, $p2) = split /[\x20\x09]+/, $line, 2; |
| 172 |
|
| 173 |
unless (defined $p2) { |
| 174 |
$onerror->(type => 'no fallback entry URI', |
| 175 |
level => $must_level, line => $line_number, column => 1, |
| 176 |
value => $line); |
| 177 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 178 |
} |
| 179 |
|
| 180 |
my $u1 = Message::DOM::DOMImplementation->create_uri_reference ($p1); |
| 181 |
|
| 182 |
unless ($u1->is_iri_reference_3987) { |
| 183 |
$onerror->(type => 'URI::syntax error:iriref3987', |
| 184 |
level => $must_level, line => $line_number, column => 1, |
| 185 |
index => 0, value => $p1); |
| 186 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 187 |
} |
| 188 |
|
| 189 |
my $u2 = Message::DOM::DOMImplementation->create_uri_reference ($p2); |
| 190 |
|
| 191 |
unless ($u2->is_iri_reference_3987) { |
| 192 |
$onerror->(type => 'URI::syntax error:iriref3987', |
| 193 |
level => $must_level, line => $line_number, column => 1, |
| 194 |
index => 1, value => $p2); |
| 195 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 196 |
} |
| 197 |
|
| 198 |
if (defined $u1->uri_fragment) { |
| 199 |
$onerror->(type => 'URI fragment not allowed', |
| 200 |
level => $must_level, line => $line_number, column => 1, |
| 201 |
index => 0, value => $p1); |
| 202 |
## NOTE: MUST in writing section. |
| 203 |
## ISSUE: Not dropped |
| 204 |
} |
| 205 |
|
| 206 |
if (defined $u2->uri_fragment) { |
| 207 |
$onerror->(type => 'URI fragment not allowed', |
| 208 |
level => $must_level, line => $line_number, column => 1, |
| 209 |
index => 1, value => $p2); |
| 210 |
## NOTE: MUST in writing section. |
| 211 |
## ISSUE: Not dropped |
| 212 |
} |
| 213 |
|
| 214 |
$u1 = $u1->get_absolute_reference ($_[3]); |
| 215 |
$u2 = $u2->get_absolute_reference ($_[3]); |
| 216 |
|
| 217 |
if (exists $fallback_uris->{$u1->uri_reference}) { |
| 218 |
$onerror->(type => 'duplicate oc namespace', |
| 219 |
level => $must_level, line => $line_number, column => 1, |
| 220 |
index => 0, value => $u1->uri_reference); |
| 221 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 222 |
} |
| 223 |
|
| 224 |
unless ($same_shp->($u1)) { |
| 225 |
$onerror->(type => 'different shp from manifest', |
| 226 |
level => $must_level, line => $line_number, column => 1, |
| 227 |
index => 0, value => $u1->uri_reference); |
| 228 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 229 |
} |
| 230 |
|
| 231 |
my $u2_scheme = $u2->uri_scheme; |
| 232 |
unless (defined $u2_scheme and $u2_scheme eq $m_scheme) { |
| 233 |
$onerror->(type => 'different scheme from manifest', |
| 234 |
level => $warn_level, line => $line_number, column => 1, |
| 235 |
index => 1, value => $u2->uri_reference); |
| 236 |
next START_OF_LINE; |
| 237 |
} |
| 238 |
|
| 239 |
$fallback_uris->{$u1->uri_reference} = $u2->uri_reference; |
| 240 |
} elsif ($mode eq 'online whitelist') { |
| 241 |
my $uri = Message::DOM::DOMImplementation->create_uri_reference ($line); |
| 242 |
|
| 243 |
unless ($uri->is_iri_reference_3987) { |
| 244 |
$onerror->(type => 'URI::syntax error:iriref3987', |
| 245 |
level => $must_level, line => $line_number, column => 1, |
| 246 |
value => $line); |
| 247 |
next START_OF_LINE; ## NOTE: MUST in syntax. |
| 248 |
} |
| 249 |
|
| 250 |
$uri = $uri->get_absolute_reference ($_[3]); |
| 251 |
|
| 252 |
if (defined $uri->uri_fragment) { |
| 253 |
$uri->uri_fragment (undef); |
| 254 |
$onerror->(type => 'URI fragment not allowed', |
| 255 |
level => $must_level, line => $line_number, column => 1, |
| 256 |
value => $line); |
| 257 |
## NOTE: MUST in writing section. |
| 258 |
} |
| 259 |
|
| 260 |
my $scheme = $uri->uri_scheme; |
| 261 |
unless (defined $scheme and $scheme eq $m_scheme) { |
| 262 |
$onerror->(type => 'different scheme from manifest', |
| 263 |
level => $warn_level, line => $line_number, column => 1, |
| 264 |
value => $uri->uri_reference); |
| 265 |
next START_OF_LINE; |
| 266 |
} |
| 267 |
|
| 268 |
push @$online_whitelist_uris, $uri->uri_reference; |
| 269 |
} |
| 270 |
|
| 271 |
## Step 21 |
| 272 |
#next START_OF_LINE; |
| 273 |
} # START_OF_LINE |
| 274 |
|
| 275 |
## Step 22 |
| 276 |
return [$explicit_uris, $fallback_uris, $online_whitelist_uris]; |
| 277 |
} # _parse |
| 278 |
|
| 279 |
sub check_manifest ($$$) { |
| 280 |
my (undef, $manifest, $onerror) = @_; |
| 281 |
|
| 282 |
my $listed = {}; |
| 283 |
my $must_level = 'm'; |
| 284 |
|
| 285 |
require Whatpm::URIChecker; |
| 286 |
|
| 287 |
for my $uri (@{$manifest->[0]}) { |
| 288 |
$listed->{$uri} = 1; |
| 289 |
|
| 290 |
Whatpm::URIChecker->check_iri_reference ($uri, sub { |
| 291 |
my %opt = @_; |
| 292 |
$onerror->(level => $opt{level}, value => $uri, |
| 293 |
type => 'URI::'.$opt{type}. |
| 294 |
(defined $opt{position} ? ':'.$opt{position} : '')); |
| 295 |
}); |
| 296 |
} |
| 297 |
|
| 298 |
for my $uri (values %{$manifest->[1]}) { |
| 299 |
$listed->{$uri} = 1; |
| 300 |
|
| 301 |
Whatpm::URIChecker->check_iri_reference ($uri, sub { |
| 302 |
my %opt = @_; |
| 303 |
$onerror->(level => $opt{level}, index => 1, value => $uri, |
| 304 |
type => 'URI::'.$opt{type}. |
| 305 |
(defined $opt{position} ? ':'.$opt{position} : '')); |
| 306 |
}); |
| 307 |
} |
| 308 |
|
| 309 |
for my $uri (keys %{$manifest->[1]}) { |
| 310 |
Whatpm::URIChecker->check_iri_reference ($uri, sub { |
| 311 |
my %opt = @_; |
| 312 |
$onerror->(level => $opt{level}, index => 0, value => $uri, |
| 313 |
type => 'URI::'.$opt{type}. |
| 314 |
(defined $opt{position} ? ':'.$opt{position} : '')); |
| 315 |
}); |
| 316 |
} |
| 317 |
|
| 318 |
for my $uri (@{$manifest->[2]}) { |
| 319 |
if ($listed->{$uri}) { |
| 320 |
$onerror->(type => 'both in entries and whitelist', |
| 321 |
level => $must_level, value => $uri); |
| 322 |
## NOTE: MUST in writing section. |
| 323 |
} |
| 324 |
|
| 325 |
Whatpm::URIChecker->check_iri_reference ($uri, sub { |
| 326 |
my %opt = @_; |
| 327 |
$onerror->(level => $opt{level}, value => $uri, |
| 328 |
type => 'URI::'.$opt{type}. |
| 329 |
(defined $opt{position} ? ':'.$opt{position} : '')); |
| 330 |
}); |
| 331 |
} |
| 332 |
} # check_manifest |
| 333 |
|
| 334 |
|
| 335 |
=head1 LICENSE |
| 336 |
|
| 337 |
Copyright 2007 Wakaba <w@suika.fam.cx> |
| 338 |
|
| 339 |
This library is free software; you can redistribute it |
| 340 |
and/or modify it under the same terms as Perl itself. |
| 341 |
|
| 342 |
=cut |
| 343 |
|
| 344 |
1; |
| 345 |
# $Date: 2007/08/06 10:56:50 $ |
Parent Directory
| 
Revision Log