1 # Copyright (C) 2014, Eric Wong <normalperson@yhbt.net> and all contributors
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
4 # We focus on the lowest common denominators here:
5 # - targeted at text-only console browsers (w3m, links, etc..)
6 # - Only basic HTML, CSS only for line-wrapping <pre> text content for GUIs
7 # - No JavaScript, graphics or icons allowed.
8 # - Must not rely on static content
9 # - UTF-8 is only for user-content, 7-bit US-ASCII for us
10 package PublicInbox::WWW;
14 use PublicInbox::Config;
15 use URI::Escape qw(uri_escape_utf8 uri_unescape);
16 use constant SSOMA_URL => 'http://ssoma.public-inbox.org/';
17 use constant PI_URL => 'http://public-inbox.org/';
18 our $LISTNAME_RE = qr!\A/([\w\.\-]+)!;
19 our $MID_RE = qr!([^/]+)!;
20 our $END_RE = qr!(f/|T/|t/|t\.mbox(?:\.gz)?|t\.atom|raw|)!;
24 my ($cgi, $method) = @_;
25 $pi_config ||= PublicInbox::Config->new;
26 my $ctx = { cgi => $cgi, pi_config => $pi_config };
27 if ($method !~ /\AGET|HEAD\z/) {
28 return r(405, 'Method Not Allowed');
30 my $path_info = $cgi->path_info;
32 # top-level indices and feeds
33 if ($path_info eq '/') {
35 } elsif ($path_info =~ m!$LISTNAME_RE\z!o) {
36 invalid_list($ctx, $1) || r301($ctx, $1);
37 } elsif ($path_info =~ m!$LISTNAME_RE(?:/|/index\.html)?\z!o) {
38 invalid_list($ctx, $1) || get_index($ctx);
39 } elsif ($path_info =~ m!$LISTNAME_RE/(?:atom\.xml|new\.atom)\z!o) {
40 invalid_list($ctx, $1) || get_atom($ctx);
42 } elsif ($path_info =~ m!$LISTNAME_RE/$MID_RE/$END_RE\z!o) {
43 msg_page($ctx, $1, $2, $3);
45 # convenience redirects order matters
46 } elsif ($path_info =~ m!$LISTNAME_RE/([^/]{2,})\z!o) {
50 legacy_redirects($ctx, $path_info);
54 # for CoW-friendliness, MOOOOO!
56 require PublicInbox::Feed;
57 require PublicInbox::View;
58 require PublicInbox::Thread;
59 require PublicInbox::GitCatFile;
65 require PublicInbox::Search;
66 require PublicInbox::Mbox;
67 require IO::Compress::Gzip;
71 # private functions below
75 if ($ctx && $ctx->{mid}) {
76 require PublicInbox::ExtMsg;
77 return PublicInbox::ExtMsg::ext_msg($ctx);
82 # simple response for errors
83 sub r { [ $_[0], ['Content-Type' => 'text/plain'], [ join(' ', @_, "\n") ] ] }
85 # returns undef if valid, array ref response if invalid
87 my ($ctx, $listname) = @_;
88 my $git_dir = $pi_config->get($listname, "mainrepo");
89 if (defined $git_dir) {
90 $ctx->{git_dir} = $git_dir;
91 $ctx->{listname} = $listname;
97 # returns undef if valid, array ref response if invalid
98 sub invalid_list_mid {
99 my ($ctx, $listname, $mid) = @_;
100 my $ret = invalid_list($ctx, $listname, $mid);
103 $ctx->{mid} = $mid = uri_unescape($mid);
104 if ($mid =~ /\A[a-f0-9]{40}\z/) {
105 if ($mid = mid2blob($ctx)) {
106 require Email::Simple;
107 use PublicInbox::MID qw/mid_clean/;
108 $mid = Email::Simple->new($mid);
109 $ctx->{mid} = mid_clean($mid->header('Message-ID'));
115 # /$LISTNAME/new.atom -> Atom feed, includes replies
118 require PublicInbox::Feed;
119 PublicInbox::Feed::generate($ctx);
122 # /$LISTNAME/?r=$GIT_COMMIT -> HTML only
125 require PublicInbox::Feed;
126 my $srch = searcher($ctx);
128 PublicInbox::Feed::generate_html_index($ctx);
131 # just returns a string ref for the blob in the current ctx
134 require PublicInbox::MID;
135 my $path = PublicInbox::MID::mid2path($ctx->{mid});
136 my @cmd = ('git', "--git-dir=$ctx->{git_dir}",
137 qw(cat-file blob), "HEAD:$path");
138 my $pid = open my $fh, '-|';
139 defined $pid or die "fork failed: $!\n";
141 open STDERR, '>', '/dev/null'; # ignore errors
142 exec @cmd or die "exec failed: $!\n";
144 my $blob = eval { local $/; <$fh> };
146 $? == 0 ? \$blob : undef;
150 # /$LISTNAME/$MESSAGE_ID/raw -> raw mbox
153 my $x = mid2blob($ctx) or return r404($ctx);
154 require PublicInbox::Mbox;
155 PublicInbox::Mbox::emit1($x);
158 # /$LISTNAME/$MESSAGE_ID/ -> HTML content (short quotes)
161 my $x = mid2blob($ctx) or return r404($ctx);
163 require PublicInbox::View;
164 my $foot = footer($ctx);
166 my $mime = Email::MIME->new($x);
168 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
169 [ PublicInbox::View::msg_html($ctx, $mime, 'f/', $foot) ] ];
172 # /$LISTNAME/$MESSAGE_ID/f/ -> HTML content (fullquotes)
175 my $x = mid2blob($ctx) or return r404($ctx);
177 require PublicInbox::View;
178 my $foot = footer($ctx);
180 my $mime = Email::MIME->new($x);
182 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
183 [ PublicInbox::View::msg_html($ctx, $mime, undef, $foot)] ];
186 # /$LISTNAME/$MESSAGE_ID/t/
188 my ($ctx, $flat) = @_;
189 my $srch = searcher($ctx) or return need_search($ctx);
190 require PublicInbox::View;
191 my $foot = footer($ctx);
192 $ctx->{flat} = $flat;
193 PublicInbox::View::thread_html($ctx, $foot, $srch);
198 ref($cgi) eq 'CGI' ? $cgi->self_url : $cgi->uri->as_string;
202 my ($ctx, $key) = @_;
203 my $val = $ctx->{$key};
204 (defined $val && $val ne '') or die "BUG: bad ctx, $key unusable\n";
211 if (open(my $fh, '<', $path)) {
221 return '' unless $ctx;
222 my $git_dir = ctx_get($ctx, 'git_dir');
224 # favor user-supplied footer
225 my $footer = try_cat("$git_dir/public-inbox/footer.html");
226 if (defined $footer) {
228 $ctx->{footer} = $footer;
232 # auto-generate a footer
233 my $listname = ctx_get($ctx, 'listname');
234 my $desc = try_cat("$git_dir/description");
235 $desc = '$GIT_DIR/description missing' unless defined $desc;
238 my $urls = try_cat("$git_dir/cloneurl");
239 my @urls = split(/\r?\n/, $urls || '');
240 my $nurls = scalar @urls;
242 $urls = '($GIT_DIR/cloneurl missing)';
243 } elsif ($nurls == 1) {
244 $urls = "git URL for <a\nhref=\"" . SSOMA_URL .
245 '">ssoma</a>: ' . $urls[0];
247 $urls = "git URLs for <a\nhref=\"" . SSOMA_URL .
248 "\">ssoma</a>:\n" . join("\n", map { "\t$_" } @urls);
251 my $addr = $pi_config->get($listname, 'address');
252 if (ref($addr) eq 'ARRAY') {
253 $addr = $addr->[0]; # first address is primary
256 $addr = "<a\nhref=\"mailto:$addr\">$addr</a>";
258 $ctx->{footer} = join("\n",
260 "A <a\nhref=\"" . PI_URL . '">public-inbox</a>, ' .
261 'anybody may post in plain-text (not HTML):',
267 # search support is optional, returns undef if Xapian is not installed
268 # or not configured for the given GIT_DIR
272 require PublicInbox::Search;
273 $ctx->{srch} = PublicInbox::Search->new($ctx->{git_dir});
280 <html><head><title>Search not available for this
281 public-inbox</title><body><pre>Search is not available for this public-inbox
282 <a href="../">Return to index</a></pre></body></html>
284 [ 501, [ 'Content-Type' => 'text/html; charset=UTF-8' ], [ $msg ] ];
287 # /$LISTNAME/$MESSAGE_ID/t.mbox -> thread as mbox
288 # /$LISTNAME/$MESSAGE_ID/t.mbox.gz -> thread as gzipped mbox
289 # note: I'm not a big fan of other compression formats since they're
290 # significantly more expensive on CPU than gzip and less-widely available,
291 # especially on older systems. Stick to zlib since that's what git uses.
292 sub get_thread_mbox {
293 my ($ctx, $sfx) = @_;
294 my $srch = searcher($ctx) or return need_search($ctx);
295 require PublicInbox::Mbox;
296 PublicInbox::Mbox::thread_mbox($ctx, $srch, $sfx);
300 # /$LISTNAME/$MESSAGE_ID/t.atom -> thread as Atom feed
301 sub get_thread_atom {
303 searcher($ctx) or return need_search($ctx);
304 $ctx->{self_url} = self_url($ctx->{cgi});
305 require PublicInbox::Feed;
306 PublicInbox::Feed::generate_thread_atom($ctx);
309 sub legacy_redirects {
310 my ($ctx, $path_info) = @_;
312 # single-message pages
313 if ($path_info =~ m!$LISTNAME_RE/m/(\S+)/\z!o) {
315 } elsif ($path_info =~ m!$LISTNAME_RE/m/(\S+)/raw\z!o) {
316 r301($ctx, $1, $2, 'raw');
318 } elsif ($path_info =~ m!$LISTNAME_RE/f/(\S+)/\z!o) {
319 r301($ctx, $1, $2, 'f/');
322 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)/\z!o) {
323 r301($ctx, $1, $2, 't/#u');
325 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)/mbox(\.gz)?\z!o) {
326 r301($ctx, $1, $2, "t.mbox$3");
328 # even older legacy redirects
329 } elsif ($path_info =~ m!$LISTNAME_RE/m/(\S+)\.html\z!o) {
332 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)\.html\z!o) {
333 r301($ctx, $1, $2, 't/#u');
335 } elsif ($path_info =~ m!$LISTNAME_RE/f/(\S+)\.html\z!o) {
336 r301($ctx, $1, $2, 'f/');
338 } elsif ($path_info =~ m!$LISTNAME_RE/(?:m|f)/(\S+)\.txt\z!o) {
339 r301($ctx, $1, $2, 'raw');
341 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)(\.mbox(?:\.gz)?)\z!o) {
342 r301($ctx, $1, $2, "t$3");
344 # legacy convenience redirects, order still matters
345 } elsif ($path_info =~ m!$LISTNAME_RE/m/(\S+)\z!o) {
347 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)\z!o) {
348 r301($ctx, $1, $2, 't/#u');
349 } elsif ($path_info =~ m!$LISTNAME_RE/f/(\S+)\z!o) {
350 r301($ctx, $1, $2, 'f/');
352 # some Message-IDs have slashes in them and the HTTP server
353 # may try to be clever and unescape them :<
354 } elsif ($path_info =~ m!$LISTNAME_RE/(\S+/\S+)/$END_RE\z!o) {
355 msg_page($ctx, $1, $2, $3);
363 my ($ctx, $listname, $mid, $suffix) = @_;
364 my $cgi = $ctx->{cgi};
366 if (ref($cgi) eq 'CGI') {
367 $url = $cgi->url(-base) . '/';
369 $url = $cgi->base->as_string;
372 $url .= $listname . '/';
373 $url .= (uri_escape_utf8($mid) . '/') if (defined $mid);
374 $url .= $suffix if (defined $suffix);
377 [ Location => $url, 'Content-Type' => 'text/plain' ],
378 [ "Redirecting to $url\n" ] ]
382 my ($ctx, $list, $mid, $e) = @_;
383 unless (invalid_list_mid($ctx, $list, $mid)) {
384 '' eq $e and return get_mid_html($ctx);
385 't/' eq $e and return get_thread($ctx);
386 't.atom' eq $e and return get_thread_atom($ctx);
387 't.mbox' eq $e and return get_thread_mbox($ctx);
388 't.mbox.gz' eq $e and return get_thread_mbox($ctx, '.gz');
389 'T/' eq $e and return get_thread($ctx, 1);
390 'raw' eq $e and return get_mid_txt($ctx);
391 'f/' eq $e and return get_full_html($ctx);