gitweb: remove invalid http-equiv="content-type"

Jayman2000 · gitster · commit a262585d8134 · 2022-03-08T10:10:16.000-08:00
Before this change, gitweb would generate pages which included: <meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8"/> When a meta's http-equiv equals "content-type", the http-equiv is said to be in the "Encoding declaration state". According to the HTML Standard, The Encoding declaration state may be used in HTML documents, but elements with an http-equiv attribute in that state must not be used in XML documents. Source: <https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-content-type> This change removes that meta element since gitweb always generates XML documents. Signed-off-by: Jason Yundt <jason@jasonyundt.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
@@ -4213,8 +4213,7 @@ sub git_header_html {
 	my %opts = @_;
 
 	my $title = get_page_title();
-	my $content_type = get_content_type_html();
-	print $cgi->header(-type=>$content_type, -charset => 'utf-8',
+	print $cgi->header(-type=>get_content_type_html(), -charset => 'utf-8',
 	                   -status=> $status, -expires => $expires)
 		unless ($opts{'-no_http_header'});
 	my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
@@ -4225,7 +4224,6 @@ sub git_header_html {
 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 <!-- git core binaries version $git_version -->
 <head>
-<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
 <meta name="robots" content="index, nofollow"/>
 <title>$title</title>
diff --git a/t/t9502-gitweb-standalone-parse-output.sh b/t/t9502-gitweb-standalone-parse-output.sh
@@ -207,4 +207,17 @@ test_expect_success 'xss checks' '
 	xss "" "$TAG+"
 '
 
+no_http_equiv_content_type() {
+	gitweb_run "$@" &&
+	! grep -E "http-equiv=['\"]?content-type" gitweb.body
+}
+
+# See: <https://html.spec.whatwg.org/dev/semantics.html#attr-meta-http-equiv-content-type>
+test_expect_success 'no http-equiv="content-type" in XHTML' '
+	no_http_equiv_content_type &&
+	no_http_equiv_content_type "p=.git" &&
+	no_http_equiv_content_type "p=.git;a=log" &&
+	no_http_equiv_content_type "p=.git;a=tree"
+'
+
 test_done
