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\.\-]+)!;
21 $pi_config = PublicInbox::Config->new;
25 my ($cgi, $method) = @_;
27 if ($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) || redirect_list_index(\%ctx, $cgi);
37 } elsif ($path_info =~ m!$LISTNAME_RE(?:/|/index\.html)?\z!o) {
38 invalid_list(\%ctx, $1) || get_index(\%ctx, $cgi);
39 } elsif ($path_info =~ m!$LISTNAME_RE/atom\.xml\z!o) {
40 invalid_list(\%ctx, $1) || get_atom(\%ctx, $cgi);
42 # single-message pages
43 } elsif ($path_info =~ m!$LISTNAME_RE/m/(\S+)\.txt\z!o) {
44 invalid_list_mid(\%ctx, $1, $2) || get_mid_txt(\%ctx, $cgi);
45 } elsif ($path_info =~ m!$LISTNAME_RE/m/(\S+)\.html\z!o) {
46 invalid_list_mid(\%ctx, $1, $2) || get_mid_html(\%ctx, $cgi);
49 } elsif ($path_info =~ m!$LISTNAME_RE/f/(\S+)\.html\z!o) {
50 invalid_list_mid(\%ctx, $1, $2) || get_full_html(\%ctx, $cgi);
53 } elsif ($path_info =~ m!$LISTNAME_RE/t/(\S+)\.html\z!o) {
54 invalid_list_mid(\%ctx, $1, $2) || get_thread(\%ctx, $cgi);
56 } elsif ($path_info =~ m!$LISTNAME_RE/f/\S+\.txt\z!o) {
57 invalid_list_mid(\%ctx, $1, $2) ||
58 redirect_mid_txt(\%ctx, $cgi);
60 # convenience redirects, order matters
61 } elsif ($path_info =~ m!$LISTNAME_RE/(m|f|t|s)/(\S+)\z!o) {
63 invalid_list_mid(\%ctx, $1, $3) ||
64 redirect_mid(\%ctx, $cgi, $2);
71 # for CoW-friendliness, MOOOOO!
73 require PublicInbox::Feed;
74 require PublicInbox::View;
75 require PublicInbox::Thread;
79 require XML::Atom::SimpleFeed;
82 # private functions below
84 sub r404 { r(404, 'Not Found') }
86 # simple response for errors
87 sub r { [ $_[0], ['Content-Type' => 'text/plain'], [ join(' ', @_, "\n") ] ] }
89 # returns undef if valid, array ref response if invalid
91 my ($ctx, $listname) = @_;
92 my $git_dir = $pi_config->get($listname, "mainrepo");
93 if (defined $git_dir) {
94 $ctx->{git_dir} = $git_dir;
95 $ctx->{listname} = $listname;
101 # returns undef if valid, array ref response if invalid
102 sub invalid_list_mid {
103 my ($ctx, $listname, $mid) = @_;
104 my $ret = invalid_list($ctx, $listname, $mid);
105 $ctx->{mid} = uri_unescape($mid) unless $ret;
109 # /$LISTNAME/atom.xml -> Atom feed, includes replies
111 my ($ctx, $cgi) = @_;
112 require PublicInbox::Feed;
113 $ctx->{pi_config} = $pi_config;
115 [ 200, [ 'Content-Type' => 'application/xml' ],
116 [ PublicInbox::Feed->generate($ctx) ] ]
119 # /$LISTNAME/?r=$GIT_COMMIT -> HTML only
121 my ($ctx, $cgi) = @_;
122 require PublicInbox::Feed;
123 my $srch = searcher($ctx);
124 $ctx->{pi_config} = $pi_config;
127 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
128 [ PublicInbox::Feed->generate_html_index($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 $cmd = join(' ', @cmd);
139 my $pid = open my $fh, '-|';
140 defined $pid or die "fork failed: $!\n";
142 open STDERR, '>', '/dev/null'; # ignore errors
143 exec @cmd or die "exec failed: $!\n";
145 my $blob = eval { local $/; <$fh> };
147 $? == 0 ? \$blob : undef;
151 # /$LISTNAME/m/$MESSAGE_ID.txt -> raw original
153 my ($ctx, $cgi) = @_;
154 my $x = mid2blob($ctx);
155 $x ? [ 200, [ 'Content-Type' => 'text/plain' ], [ $$x ] ] : r404();
158 # /$LISTNAME/m/$MESSAGE_ID.html -> HTML content (short quotes)
160 my ($ctx, $cgi) = @_;
161 my $x = mid2blob($ctx);
162 return r404() unless $x;
164 require PublicInbox::View;
165 my $pfx = msg_pfx($ctx);
166 my $foot = footer($ctx);
168 my $mime = Email::MIME->new($x);
169 my $srch = searcher($ctx);
170 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
171 [ PublicInbox::View->msg_html($mime, $pfx, $foot, $srch) ] ];
174 # /$LISTNAME/f/$MESSAGE_ID.html -> HTML content (fullquotes)
176 my ($ctx, $cgi) = @_;
177 my $x = mid2blob($ctx);
178 return r404() unless $x;
179 require PublicInbox::View;
180 my $foot = footer($ctx);
182 my $mime = Email::MIME->new($x);
183 my $srch = searcher($ctx);
184 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
185 [ PublicInbox::View->msg_html($mime, undef, $foot, $srch)] ];
188 # /$LISTNAME/t/$MESSAGE_ID.html
190 my ($ctx, $cgi) = @_;
191 my $srch = searcher($ctx) or return need_search($ctx);
192 require PublicInbox::View;
193 my $foot = footer($ctx);
194 my $body = PublicInbox::View->thread_html($ctx, $foot, $srch) or
196 [ 200, [ 'Content-Type' => 'text/html; charset=UTF-8' ],
202 ref($cgi) eq 'CGI' ? $cgi->self_url : $cgi->uri->as_string;
205 sub redirect_list_index {
206 my ($ctx, $cgi) = @_;
207 do_redirect(self_url($cgi) . "/");
211 my ($ctx, $cgi, $pfx) = @_;
212 my $url = self_url($cgi);
214 if (lc($pfx) eq 't') {
215 $anchor = '#u'; # <u id='#u'> is used to highlight in View.pm
217 do_redirect($url . ".html$anchor");
220 # only hit when somebody tries to guess URLs manually:
221 sub redirect_mid_txt {
222 my ($ctx, $cgi, $pfx) = @_;
223 my $listname = $ctx->{listname};
224 my $url = self_url($cgi);
225 $url =~ s!/$listname/f/(\S+\.txt)\z!/$listname/m/$1!;
232 [ Location => $url, 'Content-Type' => 'text/plain' ],
233 [ "Redirecting to $url\n" ]
238 my ($ctx, $key) = @_;
239 my $val = $ctx->{$key};
240 (defined $val && length $val) or die "BUG: bad ctx, $key unusable\n";
247 if (open(my $fh, '<', $path)) {
257 return '' unless $ctx;
258 my $git_dir = ctx_get($ctx, 'git_dir');
260 # favor user-supplied footer
261 my $footer = try_cat("$git_dir/public-inbox/footer.html");
262 if (defined $footer) {
264 $ctx->{footer} = $footer;
268 # auto-generate a footer
269 my $listname = ctx_get($ctx, 'listname');
270 my $desc = try_cat("$git_dir/description");
271 $desc = '$GIT_DIR/description missing' unless defined $desc;
274 my $urls = try_cat("$git_dir/cloneurl");
275 my @urls = split(/\r?\n/, $urls || '');
276 my $nurls = scalar @urls;
278 $urls = '($GIT_DIR/cloneurl missing)';
279 } elsif ($nurls == 1) {
280 $urls = "git URL for <a\nhref=\"" . SSOMA_URL .
281 '">ssoma</a>: ' . $urls[0];
283 $urls = "git URLs for <a\nhref=\"" . SSOMA_URL .
284 "\">ssoma</a>:\n" . join("\n", map { "\t$_" } @urls);
287 my $addr = $pi_config->get($listname, 'address');
288 if (ref($addr) eq 'ARRAY') {
289 $addr = $addr->[0]; # first address is primary
292 $addr = "<a\nhref=\"mailto:$addr\">$addr</a>";
294 $ctx->{footer} = join("\n",
296 "A <a\nhref=\"" . PI_URL . '">public-inbox</a>, ' .
297 'anybody may post in plain-text (not HTML):',
303 # search support is optional, returns undef if Xapian is not installed
304 # or not configured for the given GIT_DIR
308 require PublicInbox::Search;
309 $ctx->{srch} = PublicInbox::Search->new($ctx->{git_dir});
316 <html><head><title>Search not available for this
317 public-inbox</title><body><pre>Search is not available for this public-inbox
318 <a href="../">Return to index</a></pre></body></html>
320 [ 501, [ 'Content-Type' => 'text/html; charset=UTF-8' ], [ $msg ] ];
325 my $href = PublicInbox::Hval::ascii_html(uri_escape_utf8($ctx->{mid}));