-# Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# used for displaying help texts and other non-mail content
package PublicInbox::WwwText;
use strict;
-use warnings;
+use v5.10.1;
use PublicInbox::Linkify;
use PublicInbox::WwwStream;
-use PublicInbox::Hval qw(ascii_html);
+use PublicInbox::Hval qw(ascii_html prurl);
+use HTTP::Date qw(time2str);
+use URI::Escape qw(uri_escape_utf8);
+use PublicInbox::GzipFilter qw(gzf_maybe);
our $QP_URL = 'https://xapian.org/docs/queryparser.html';
our $WIKI_URL = 'https://en.wikipedia.org/wiki';
+my $hl = eval {
+ require PublicInbox::HlMod;
+ PublicInbox::HlMod->new
+};
# /$INBOX/_/text/$KEY/ # KEY may contain slashes
# For now, "help" is the only supported $KEY
my ($ctx, $key) = @_;
my $code = 200;
- $key = 'help' if !defined $key; # this 302s to _/text/help/
+ $key //= 'help'; # this 302s to _/text/help/
# get the raw text the same way we get mboxrds
my $raw = ($key =~ s!/raw\z!!);
my $have_tslash = ($key =~ s!/\z!!) if !$raw;
my $txt = '';
- if (!_default_text($ctx, $key, \$txt)) {
+ my $hdr = [ 'Content-Type', 'text/plain', 'Content-Length', undef ];
+ if (!_default_text($ctx, $key, $hdr, \$txt)) {
$code = 404;
$txt = "404 Not Found ($key)\n";
}
+ my $env = $ctx->{env};
if ($raw) {
- return [ $code, [ 'Content-Type', 'text/plain',
- 'Content-Length', bytes::length($txt) ],
- [ $txt ] ]
+ if ($code == 200) {
+ my $gzf = gzf_maybe($hdr, $env);
+ $txt = $gzf->translate($txt);
+ $txt .= $gzf->zflush;
+ }
+ $hdr->[3] = length($txt);
+ return [ $code, $hdr, [ $txt ] ]
}
# enforce trailing slash for "wget -r" compatibility
if (!$have_tslash && $code == 200) {
- my $url = $ctx->{-inbox}->base_url($ctx->{env});
+ my $url = $ctx->{ibx}->base_url($env);
$url .= "_/text/$key/";
return [ 302, [ 'Content-Type', 'text/plain',
# Follow git commit message conventions,
# first line is the Subject/title
my ($title) = ($txt =~ /\A([^\n]*)/s);
- _do_linkify($txt);
$ctx->{-title_html} = ascii_html($title);
-
my $nslash = ($key =~ tr!/!/!);
$ctx->{-upfx} = '../../../' . ('../' x $nslash);
-
- PublicInbox::WwwStream->response($ctx, $code, sub {
- my ($nr, undef) = @_;
- $nr == 1 ? '<pre>'.$txt.'</pre>' : undef
- });
-}
-
-sub _do_linkify {
my $l = PublicInbox::Linkify->new;
- $_[0] = $l->linkify_2(ascii_html($l->linkify_1($_[0])));
+ $l->linkify_1($txt);
+ if ($hl) {
+ $hl->do_hl_text(\$txt);
+ } else {
+ $txt = ascii_html($txt);
+ }
+ $txt = '<pre>' . $l->linkify_2($txt) . '</pre>';
+ PublicInbox::WwwStream::html_oneshot($ctx, $code, \$txt);
}
sub _srch_prefix ($$) {
- my ($srch, $txt) = @_;
+ my ($ibx, $txt) = @_;
my $pad = 0;
my $htxt = '';
- my $help = $srch->help;
+ my $help = $ibx->isrch->help;
my $i;
for ($i = 0; $i < @$help; $i += 2) {
my $pfx = $help->[$i];
$htxt .= "\f\n";
}
$pad += 2;
- my $padding = ' ' x ($pad + 8);
+ my $padding = ' ' x ($pad + 4);
$htxt =~ s/^/$padding/gms;
- $htxt =~ s/^$padding(\S+)\0/" $1".
- (' ' x ($pad - length($1)))/egms;
+ $htxt =~ s/^$padding(\S+)\0/" $1".(' ' x ($pad - length($1)))/egms;
$htxt =~ s/\f\n/\n/gs;
$$txt .= $htxt;
1;
}
+sub _colors_help ($$) {
+ my ($ctx, $txt) = @_;
+ my $ibx = $ctx->{ibx};
+ my $env = $ctx->{env};
+ my $base_url = $ibx->base_url($env);
+ $$txt .= "color customization for $base_url\n";
+ $$txt .= <<EOF;
+
+public-inbox provides a stable set of CSS classes for users to
+customize colors for highlighting diffs and code.
+
+Users of browsers such as dillo, Firefox, or some browser
+extensions may start by downloading the following sample CSS file
+to control the colors they see:
+
+ ${base_url}userContent.css
+
+CSS sample
+----------
+```css
+EOF
+ $$txt .= PublicInbox::UserContent::sample($ibx, $env) . "```\n";
+}
+
+# git-config section names are quoted in the config file, so escape them
+sub dq_escape ($) {
+ my ($name) = @_;
+ $name =~ s/\\/\\\\/g;
+ $name =~ s/"/\\"/g;
+ $name;
+}
+
+sub _coderepo_config ($$) {
+ my ($ctx, $txt) = @_;
+ my $cr = $ctx->{ibx}->{coderepo} // return;
+ # note: this doesn't preserve cgitrc layout, since we parse cgitrc
+ # and drop the original structure
+ $$txt .= "\tcoderepo = $_\n" for @$cr;
+ $$txt .= <<'EOF';
+
+; `coderepo' entries allows blob reconstruction via patch emails if
+; the inbox is indexed with Xapian. `@@ <from-range> <to-range> @@'
+; line number ranges in `[PATCH]' emails link to /$INBOX_NAME/$OID/s/,
+; an HTTP endpoint which reconstructs git blobs via git-apply(1).
+EOF
+ my $pi_cfg = $ctx->{www}->{pi_cfg};
+ for my $cr_name (@$cr) {
+ my $urls = $pi_cfg->get_all("coderepo.$cr_name.cgiturl");
+ my $path = "/path/to/$cr_name";
+ $cr_name = dq_escape($cr_name);
+
+ $$txt .= qq([coderepo "$cr_name"]\n);
+ if ($urls && scalar(@$urls)) {
+ $$txt .= "\t; ";
+ $$txt .= join(" ||\n\t;\t", map {;
+ my $dst = $path;
+ if ($path !~ m![a-z0-9_/\.\-]!i) {
+ $dst = '"'.dq_escape($dst).'"';
+ }
+ qq(git clone $_ $dst);
+ } @$urls);
+ $$txt .= "\n";
+ }
+ $$txt .= "\tdir = $path\n";
+ $$txt .= "\tcgiturl = https://example.com/";
+ $$txt .= uri_escape_utf8($cr_name, '^A-Za-z0-9\-\._~/')."\n";
+ }
+}
+
+# n.b. this is a perfect candidate for memoization
+sub inbox_config ($$$) {
+ my ($ctx, $hdr, $txt) = @_;
+ my $ibx = $ctx->{ibx};
+ push @$hdr, 'Content-Disposition', 'inline; filename=inbox.config';
+ my $t = eval { $ibx->mm->created_at };
+ push(@$hdr, 'Last-Modified', time2str($t)) if $t;
+ my $name = dq_escape($ibx->{name});
+ my $inboxdir = '/path/to/top-level-inbox';
+ my $base_url = $ibx->base_url($ctx->{env});
+ $$txt .= <<EOS;
+; Example public-inbox config snippet for a mirror of
+; $base_url
+; See public-inbox-config(5) manpage for more details:
+; https://public-inbox.org/public-inbox-config.html
+[publicinbox "$name"]
+ inboxdir = $inboxdir
+ ; note: public-inbox before v1.2.0 used `mainrepo' instead of
+ ; `inboxdir', both remain supported after 1.2
+ mainrepo = $inboxdir
+ url = https://example.com/$name/
+ url = http://example.onion/$name/
+EOS
+ for my $k (qw(address listid infourl watchheader)) {
+ defined(my $v = $ibx->{$k}) or next;
+ $$txt .= "\t$k = $_\n" for @$v;
+ }
+ if (my $altid = $ibx->{altid}) {
+ my $altid_map = $ibx->altid_map;
+ $$txt .= <<EOF;
+ ; altid DBs may be used to provide numeric article ID lookup from
+ ; old, pre-existing sources. You can recreate them via curl(1),
+ ; gzip(1), and sqlite3(1) as documented:
+EOF
+ for (sort keys %$altid_map) {
+ $$txt .= "\t;\tcurl -d '' $base_url$_.sql.gz | \\\n" .
+ "\t;\tgzip -dc | \\\n" .
+ "\t;\tsqlite3 $inboxdir/$_.sqlite3\n";
+ $$txt .= "\taltid = serial:$_:file=$_.sqlite3\n";
+ }
+ }
+
+ for my $k (qw(filter newsgroup obfuscate replyto)) {
+ defined(my $v = $ibx->{$k}) or next;
+ $$txt .= "\t$k = $v\n";
+ }
+ $$txt .= "\timapmirror = $_\n" for (@{$ibx->imap_url($ctx)});
+ $$txt .= "\tnntpmirror = $_\n" for (@{$ibx->nntp_url($ctx)});
+ _coderepo_config($ctx, $txt);
+ 1;
+}
+
+# n.b. this is a perfect candidate for memoization
+sub extindex_config ($$$) {
+ my ($ctx, $hdr, $txt) = @_;
+ my $ibx = $ctx->{ibx};
+ push @$hdr, 'Content-Disposition', 'inline; filename=extindex.config';
+ my $name = dq_escape($ibx->{name});
+ my $base_url = $ibx->base_url($ctx->{env});
+ $$txt .= <<EOS;
+; Example public-inbox config snippet for the external index (extindex) at:
+; $base_url
+; See public-inbox-config(5)manpage for more details:
+; https://public-inbox.org/public-inbox-config.html
+[extindex "$name"]
+ topdir = /path/to/extindex-topdir
+ url = https://example.com/$name/
+ url = http://example.onion/$name/
+EOS
+ for my $k (qw(infourl)) {
+ defined(my $v = $ibx->{$k}) or next;
+ $$txt .= "\t$k = $v\n";
+ }
+ _coderepo_config($ctx, $txt);
+ 1;
+}
+
+sub coderepos_raw ($$) {
+ my ($ctx, $top_url) = @_;
+ my $cr = $ctx->{ibx}->{coderepo} // return ();
+ my $cfg = $ctx->{www}->{pi_cfg};
+ my @ret;
+ for my $cr_name (@$cr) {
+ $ret[0] //= do {
+ my $thing = $ctx->{ibx}->can('cloneurl') ?
+ 'public inbox' : 'external index';
+ <<EOF;
+Code repositories for project(s) associated with this $thing
+EOF
+ };
+ my $urls = $cfg->get_all("coderepo.$cr_name.cgiturl");
+ if ($urls) {
+ for (@$urls) {
+ # relative or absolute URL?, prefix relative
+ # "foo.git" with appropriate number of "../"
+ my $u = m!\A(?:[a-z\+]+:)?//!i ? $_ :
+ $top_url.$_;
+ $ret[0] .= "\n\t" . prurl($ctx->{env}, $u);
+ }
+ } else {
+ $ret[0] .= qq[\n\t$cr_name.git (no URL configured)];
+ }
+ }
+ @ret; # may be empty, this sub is called as an arg for join()
+}
+
+sub _add_imap_nntp_urls ($$) {
+ my ($ctx, $txt) = @_;
+ $ctx->{ibx}->can('nntp_url') or return; # TODO extindex can have IMAP
+ my $urls = $ctx->{ibx}->imap_url($ctx);
+ if (@$urls) {
+ $$txt .= "\nIMAP subfolder(s) are available under:";
+ $$txt .= "\n " . join("\n ", @$urls);
+ $$txt .= <<EOM
+
+ # each subfolder (starting with `0') holds 50K messages at most
+EOM
+ }
+ $urls = $ctx->{ibx}->nntp_url($ctx);
+ if (@$urls) {
+ $$txt .= "\n";
+ $$txt .= @$urls == 1 ? 'Newsgroup' : 'Newsgroups are';
+ $$txt .= ' available over NNTP:';
+ $$txt .= "\n " . join("\n ", @$urls) . "\n";
+ }
+}
+
+sub _add_onion_note ($) {
+ my ($txt) = @_;
+ $$txt =~ m!\b[^:]+://\w+\.onion/!i and $$txt .= <<EOM
+
+note: .onion URLs require Tor: https://www.torproject.org/
+
+EOM
+}
+
+sub _mirror_help ($$) {
+ my ($ctx, $txt) = @_;
+ my $ibx = $ctx->{ibx};
+ my $base_url = $ibx->base_url($ctx->{env});
+ chop $base_url; # no trailing slash for "git clone"
+ my $dir = (split(m!/!, $base_url))[-1];
+ my %seen = ($base_url => 1);
+ my $top_url = $base_url;
+ $top_url =~ s!/[^/]+\z!/!;
+ $$txt .= "public-inbox mirroring instructions\n\n";
+ if ($ibx->can('cloneurl')) { # PublicInbox::Inbox
+ $$txt .=
+ "This public inbox may be cloned and mirrored by anyone:\n";
+ my @urls;
+ my $max = $ibx->max_git_epoch;
+ # TODO: some of these URLs may be too long and we may need to
+ # do something like code_footer() above, but these are local
+ # admin-defined
+ if (defined($max)) { # v2
+ for my $i (0..$max) {
+ # old epochs my be deleted:
+ -d "$ibx->{inboxdir}/git/$i.git" or next;
+ my $url = "$base_url/$i";
+ $seen{$url} = 1;
+ push @urls, "$url $dir/git/$i.git";
+ }
+ my $nr = scalar(@urls);
+ if ($nr > 1) {
+ chomp($$txt .= <<EOM);
+
+ # this inbox consists of $nr epochs: (no need to clone all of them)
+EOM
+ $urls[0] .= " # oldest";
+ $urls[-1] .= " # newest";
+ }
+ } else { # v1
+ push @urls, $base_url;
+ }
+ # FIXME: epoch splits can be different in other repositories,
+ # use the "cloneurl" file as-is for now:
+ for my $u (@{$ibx->cloneurl}) {
+ next if $seen{$u}++;
+ push @urls, $u;
+ }
+ $$txt .= "\n";
+ $$txt .= join('', map { " git clone --mirror $_\n" } @urls);
+ my $addrs = $ibx->{address} // 'inbox@example.com';
+ my $ng = $ibx->{newsgroup} // '';
+ substr($ng, 0, 0, ' --ng ') if $ng;
+ $addrs = join(' ', @$addrs) if ref($addrs) eq 'ARRAY';
+ my $v = defined $max ? '-V2' : '-V1';
+ $$txt .= <<EOF;
+
+ # If you have public-inbox 1.1+ installed, you may
+ # initialize and index your mirror using the following commands:
+ public-inbox-init $v$ng \\
+ $ibx->{name} ./$dir $base_url \\
+ $addrs
+ public-inbox-index ./$dir
+EOF
+ } else { # PublicInbox::ExtSearch
+ $$txt .= <<EOM;
+This is an external index which is an amalgamation of several public inboxes.
+Each public inbox needs to be mirrored individually.
+EOM
+ my $v = $ctx->{www}->{pi_cfg}->{lc('publicInbox.wwwListing')};
+ if (($v // '') =~ /\A(?:all|match=domain)\z/) {
+ $$txt .= <<EOM;
+A list of them is available at $top_url
+EOM
+ }
+ }
+ my $cfg_link = "$base_url/_/text/config/raw";
+ $$txt .= <<EOF;
+
+Example config snippet for mirrors: $cfg_link
+EOF
+ _add_imap_nntp_urls($ctx, $txt);
+ _add_onion_note($txt);
-sub _default_text ($$$) {
- my ($ctx, $key, $txt) = @_;
+ my $code_url = prurl($ctx->{env}, $PublicInbox::WwwStream::CODE_URL);
+ $$txt .= join("\n\n",
+ coderepos_raw($ctx, $top_url), # may be empty
+ "AGPL code for this site:\n git clone $code_url");
+ 1;
+}
+
+sub _default_text ($$$$) {
+ my ($ctx, $key, $hdr, $txt) = @_;
+ if ($key eq 'mirror') {
+ return _mirror_help($ctx, $txt);
+ } elsif ($key eq 'color') {
+ return _colors_help($ctx, $txt);
+ } elsif ($key eq 'config') {
+ return $ctx->{ibx}->can('cloneurl') ?
+ inbox_config($ctx, $hdr, $txt) :
+ extindex_config($ctx, $hdr, $txt);
+ }
return if $key ne 'help'; # TODO more keys?
- my $ibx = $ctx->{-inbox};
+ my $ibx = $ctx->{ibx};
my $base_url = $ibx->base_url($ctx->{env});
- $$txt .= "public-inbox help for $base_url\n";
$$txt .= <<EOF;
+public-inbox help for $base_url
overview
--------
- public-inbox uses Message-ID identifiers in URLs.
- One may look up messages by substituting Message-IDs
- (without the leading '<' or trailing '>') into the URL.
- Forward slash ('/') characters in the Message-IDs
- need to be escaped as "%2F" (without quotes).
+ public-inbox uses Message-ID identifiers in URLs.
+ One may look up messages by substituting Message-IDs
+ (without the leading '<' or trailing '>') into the URL.
+ Forward slash ('/') characters in the Message-IDs
+ need to be escaped as "%2F" (without quotes).
- Thus, it is possible to retrieve any message by its
- Message-ID by going to:
+ Thus, it is possible to retrieve any message by its
+ Message-ID by going to:
- $base_url<Message-ID>/
+ $base_url<Message-ID>/
+ (without the '<' or '>')
- (without the '<' or '>')
+ Message-IDs are described at:
- Message-IDs are described at:
-
- $WIKI_URL/Message-ID
+ $WIKI_URL/Message-ID
EOF
# n.b. we use the Xapian DB for any regeneratable,
# order-of-arrival-independent data.
- my $srch = $ibx->search;
- if ($srch) {
+ if ($ibx->isrch) {
$$txt .= <<EOF;
search
------
- This public-inbox has search functionality provided by Xapian.
+ This public-inbox has search functionality provided by Xapian.
- It supports typical AND, OR, NOT, '+', '-' queries present
- in other search engines.
+ It supports typical AND, OR, NOT, '+', '-' queries present
+ in other search engines.
- We also support search prefixes to limit the scope of the
- search to certain fields.
+ We also support search prefixes to limit the scope of the
+ search to certain fields.
- Prefixes supported in this installation include:
+ Prefixes supported in this installation include:
EOF
- _srch_prefix($srch, $txt);
-
+ _srch_prefix($ibx, $txt);
$$txt .= <<EOF;
- Most prefixes are probabilistic, meaning they support stemming
- and wildcards ('*'). Ranges (such as 'd:') and boolean prefixes
- do not support stemming or wildcards.
- The upstream Xapian query parser documentation fully explains
- the query syntax:
+ Most prefixes are probabilistic, meaning they support stemming
+ and wildcards ('*'). Ranges (such as 'd:') and boolean prefixes
+ do not support stemming or wildcards.
+ The upstream Xapian query parser documentation fully explains
+ the query syntax:
- $QP_URL
+ $QP_URL
+EOF
+ } # $srch
+ if ($ibx->over) {
+ $$txt .= <<EOF;
message threading
-----------------
- Message threading is enabled for this public-inbox,
- additional endpoints for message threads are available:
+ Message threading is enabled for this public-inbox,
+ additional endpoints for message threads are available:
- * $base_url<Message-ID>/T/#u
+ * $base_url<Message-ID>/T/#u
- Loads the thread belonging to the given <Message-ID>
- in flat chronological order. The "#u" anchor
- focuses the browser on the given <Message-ID>.
+ Loads the thread belonging to the given <Message-ID>
+ in flat chronological order. The "#u" anchor
+ focuses the browser on the given <Message-ID>.
- * $base_url<Message-ID>/t/#u
+ * $base_url<Message-ID>/t/#u
- Loads the thread belonging to the given <Message-ID>
- in threaded order with nesting. For deep threads,
- this requires a wide display or horizontal scrolling.
+ Loads the thread belonging to the given <Message-ID>
+ in threaded order with nesting. For deep threads,
+ this requires a wide display or horizontal scrolling.
- Both of these HTML endpoints are suitable for offline reading
- using the thread overview at the bottom of each page.
+ Both of these HTML endpoints are suitable for offline reading
+ using the thread overview at the bottom of each page.
- Users of feed readers may follow a particular thread using:
+ The gzipped mbox for a thread is available for downloading and
+ importing into your favorite mail client:
- * $base_url<Message-ID>/t.atom
+ * $base_url<Message-ID>/t.mbox.gz
- Which loads the thread in Atom Syndication Standard
- described at Wikipedia and RFC4287:
+ We use the mboxrd variant of the mbox format described at:
- $WIKI_URL/Atom_(standard)
- https://tools.ietf.org/html/rfc4287
+ $WIKI_URL/Mbox
- Atom Threading Extensions (RFC4685) is supported:
+ Users of feed readers may follow a particular thread using:
- https://tools.ietf.org/html/rfc4685
+ * $base_url<Message-ID>/t.atom
- Finally, the gzipped mbox for a thread is available for
- downloading and importing into your favorite mail client:
+ Which loads the thread in Atom Syndication Standard
+ described at Wikipedia and RFC4287:
- * $base_url<Message-ID>/t.mbox.gz
+ $WIKI_URL/Atom_(standard)
+ https://tools.ietf.org/html/rfc4287
- We use the mboxrd variant of the mbox format described
- at:
+ Atom Threading Extensions (RFC4685) are supported:
- $WIKI_URL/Mbox
+ https://tools.ietf.org/html/rfc4685
+
+EOF
+ } # $over
+ _add_imap_nntp_urls($ctx, \(my $note = ''));
+ $note and $note =~ s/^/ /gms and $$txt .= <<EOF;
+additional protocols
+--------------------
+$note
+EOF
+ $$txt .= <<EOF;
contact
-------
- This help text is maintained by public-inbox developers
- reachable via plain-text email at: meta\@public-inbox.org
-
+ This help text is maintained by public-inbox developers
+ reachable via plain-text email at: meta\@public-inbox.org
+ Their inbox is archived at: https://public-inbox.org/meta/
EOF
# TODO: support admin contact info in ~/.public-inbox/config
- }
1;
}