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gitweb: Send XHTML as 'application/xhtml+xml' where possible 

"The 'text/html' media type [RFC2854] is primarily for HTML, not for
XHTML. In general, this media type is NOT suitable for XHTML."

This patch makes gitweb use content negotiation to conservatively send
pages as Content-Type 'application/xhtml+xml' when the user agent
explicitly claims to support it.

It falls back to 'text/html' even if the user agent appears to
implicitly support 'application/xhtml+xml' due to a '*/*' glob, working
around an insidious bug in Internet Explorer where sending the correct
media type prevents the page from being displayed.

Signed-off-by: Alp Toker <alp@atoker.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
maint
Alp Toker 19 years ago committed by Junio C Hamano
parent
ed0e078f96
commit
f6801d669e
1 changed files with 12 additions and 2 deletions
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  1. 14
      gitweb/gitweb.cgi

14
gitweb/gitweb.cgi
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@ -293,7 +293,17 @@ sub git_header_html { @@ -293,7 +293,17 @@ sub git_header_html {
}
}
}
print $cgi->header(-type=>'text/html', -charset => 'utf-8', -status=> $status, -expires => $expires);
my $content_type;
# require explicit support from the UA if we are to send the page as
# 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
# we have to do this because MSIE sometimes globs '*/*', pretending to
# support xhtml+xml but choking when it gets what it asked for.
if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
$content_type = 'application/xhtml+xml';
} else {
$content_type = 'text/html';
}
print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
print <<EOF;
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
@ -301,7 +311,7 @@ sub git_header_html { @@ -301,7 +311,7 @@ sub git_header_html {
<!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
<!-- git core binaries version $git_version -->
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
<meta name="robots" content="index, nofollow"/>
<title>$title</title>
<link rel="stylesheet" type="text/css" href="$stylesheet"/>

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