X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FHval.pm;h=0315d759cbf6340c837a1fee5c01a8a8f71b63b6;hb=f026dbdd392c9dd5fddbdad9a2240738d4956640;hp=a455884f1c4b2e2787d10c587a29198f6e1ddb7c;hpb=57cbe47ad5e935f5071e37b07c0a2bdcc91beea0;p=public-inbox.git

diff --git a/lib/PublicInbox/Hval.pm b/lib/PublicInbox/Hval.pm
index a455884f..0315d759 100644
--- a/lib/PublicInbox/Hval.pm
+++ b/lib/PublicInbox/Hval.pm
@@ -1,5 +1,5 @@
-# Copyright (C) 2014-2015 all contributors <meta@public-inbox.org>
-# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+# Copyright (C) 2014-2018 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 #
 # represents a header value in various forms.  Used for HTML generation
 # in our web interface(s)
@@ -7,14 +7,9 @@ package PublicInbox::Hval;
 use strict;
 use warnings;
 use Encode qw(find_encoding);
-use URI::Escape qw(uri_escape_utf8);
-use PublicInbox::MID qw/mid_clean/;
-
-# for user-generated content (UGC) which may have excessively long lines
-# and screw up rendering on some browsers.  This is the only CSS style
-# feature we use.
-use constant STYLE => '<style>pre{white-space:pre-wrap}</style>';
-use constant PRE => "<pre\nstyle=\"white-space:pre-wrap\">"; # legacy
+use PublicInbox::MID qw/mid_clean mid_escape/;
+use base qw/Exporter/;
+our @EXPORT_OK = qw/ascii_html obfuscate_addrs to_filename/;
 
 my $enc_ascii = find_encoding('us-ascii');
 
@@ -30,9 +25,8 @@ sub new {
 }
 
 sub new_msgid {
-	my ($class, $msgid, $no_compress) = @_;
-	$msgid = mid_clean($msgid);
-	$class->new($msgid, $msgid);
+	my ($class, $msgid) = @_;
+	$class->new($msgid, mid_escape($msgid));
 }
 
 sub new_oneline {
@@ -51,15 +45,28 @@ my %xhtml_map = (
 	'>' => '&gt;',
 );
 
+$xhtml_map{chr($_)} = sprintf('\\x%02x', $_) for (0..31);
+# some of these overrides are standard C escapes so they're
+# easy-to-understand when rendered.
+$xhtml_map{"\x00"} = '\\0'; # NUL
+$xhtml_map{"\x07"} = '\\a'; # bell
+$xhtml_map{"\x08"} = '\\b'; # backspace
+$xhtml_map{"\x09"} = "\t"; # obvious to show as-is
+$xhtml_map{"\x0a"} = "\n"; # obvious to show as-is
+$xhtml_map{"\x0b"} = '\\v'; # vertical tab
+$xhtml_map{"\x0c"} = '\\f'; # form feed
+$xhtml_map{"\x0d"} = '\\r'; # carriage ret (not preceding \n)
+$xhtml_map{"\x1b"} = '^['; # ASCII escape (mutt seems to escape this way)
+$xhtml_map{"\x7f"} = '\\x7f'; # DEL
+
 sub ascii_html {
 	my ($s) = @_;
 	$s =~ s/\r\n/\n/sg; # fixup bad line endings
-	$s =~ s/([<>&'"])/$xhtml_map{$1}/ge;
+	$s =~ s/([<>&'"\x7f\x00-\x1f])/$xhtml_map{$1}/sge;
 	$enc_ascii->encode($s, Encode::HTMLCREF);
 }
 
 sub as_html { ascii_html($_[0]->{raw}) }
-sub as_href { ascii_html(uri_escape_utf8($_[0]->{href})) }
 
 sub raw {
 	if (defined $_[1]) {
@@ -74,4 +81,35 @@ sub prurl {
 	index($u, '//') == 0 ? "$env->{'psgi.url_scheme'}:$u" : $u;
 }
 
+# for misguided people who believe in this stuff, give them a
+# substitution for '.'
+# &#8228; &#183; and &#890; were also candidates:
+#   https://public-inbox.org/meta/20170615015250.GA6484@starla/
+# However, &#8226; was chosen to make copy+paste errors more obvious
+sub obfuscate_addrs ($$;$) {
+	my $ibx = $_[0];
+	my $repl = $_[2] || '&#8226;';
+	my $re = $ibx->{-no_obfuscate_re}; # regex of domains
+	my $addrs = $ibx->{-no_obfuscate}; # { adddress => 1 }
+	$_[1] =~ s/(([\w\.\+=\-]+)\@([\w\-]+\.[\w\.\-]+))/
+		my ($addr, $user, $domain) = ($1, $2, $3);
+		if ($addrs->{$addr} || ((defined $re && $domain =~ $re))) {
+			$addr;
+		} else {
+			$domain =~ s!([^\.]+)\.!$1$repl!;
+			$user . '@' . $domain
+		}
+		/sge;
+}
+
+# like format_sanitized_subject in git.git pretty.c with '%f' format string
+sub to_filename ($) {
+	my ($s, undef) = split(/\n/, $_[0]);
+	$s =~ s/[^A-Za-z0-9_\.]+/-/g;
+	$s =~ tr/././s;
+	$s =~ s/[\.\-]+\z//;
+	$s =~ s/\A[\.\-]+//;
+	$s
+}
+
 1;