X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/fe9e94513ab0d57f182a6922957ea14c773b4fae..e1101d121f404fd1556029bec3b1c8f723bd9f51:/t/relativity.t?ds=sidebyside

diff --git a/t/relativity.t b/t/relativity.t
index eb6cc448a..054f8f664 100755
--- a/t/relativity.t
+++ b/t/relativity.t
@@ -2,31 +2,22 @@
 use warnings;
 use strict;
 
-use Cwd qw(getcwd);
-use Errno qw(ENOENT);
-
-BEGIN {
-	if (!eval q{
+use Test::More;
+plan(skip_all => "IPC::Run not available")
+	unless eval q{
 		use IPC::Run qw(run);
 		1;
-	}) {
-		eval q{use Test::More skip_all => "IPC::Run not available"};
-	}
-	else {
-		eval q{use Test::More};
-	}
-	use_ok("IkiWiki");
-}
+	};
 
-my $PERL5LIB = 'blib/lib:blib/arch';
-my $pwd = getcwd();
+use IkiWiki;
 
-# Black-box (ish) test for relative linking between CGI and static content
+use Cwd qw(getcwd);
+use Errno qw(ENOENT);
 
-my $blob;
-my ($content, $in, %bits);
+# Black-box (ish) test for relative linking between CGI and static content
 
 sub parse_cgi_content {
+	my $content = shift;
 	my %bits;
 	if ($content =~ qr{<base href="([^"]+)" */>}) {
 		$bits{basehref} = $1;
@@ -43,10 +34,6 @@ sub parse_cgi_content {
 	return %bits;
 }
 
-ok(! system("make -s ikiwiki.out"));
-ok(! system("rm -rf t/tmp"));
-ok(! system("mkdir t/tmp"));
-
 sub write_old_file {
 	my $name = shift;
 	my $content = shift;
@@ -55,551 +42,480 @@ sub write_old_file {
 	ok(utime(333333333, 333333333, "t/tmp/in/$name"));
 }
 
-write_old_file("a.mdwn", "A");
-write_old_file("a/b.mdwn", "B");
-write_old_file("a/b/c.mdwn",
-"* A: [[a]]\n".
-"* B: [[b]]\n".
-"* E: [[a/d/e]]\n");
-write_old_file("a/d.mdwn", "D");
-write_old_file("a/d/e.mdwn", "E");
+sub write_setup_file {
+	my (%args) = @_;
+	my $urlline = defined $args{url} ? "url: $args{url}" : "";
+	my $w3mmodeline = defined $args{w3mmode} ? "w3mmode: $args{w3mmode}" : "";
+	my $reverseproxyline = defined $args{reverse_proxy} ? "reverse_proxy: $args{reverse_proxy}" : "";
 
-#######################################################################
-# site 1: a perfectly ordinary ikiwiki
-
-writefile("test.setup", "t/tmp", <<EOF
-# IkiWiki::Setup::Yaml - YAML formatted setup file
-wikiname: this is the name of my wiki
-srcdir: t/tmp/in
-destdir: t/tmp/out
-templatedir: templates
-url: "http://example.com/wiki/"
-cgiurl: "http://example.com/cgi-bin/ikiwiki.cgi"
-cgi_wrapper: t/tmp/ikiwiki.cgi
-cgi_wrappermode: 0754
-# make it easier to test previewing
-add_plugins:
-- anonok
-anonok_pagespec: "*"
-ENV: { 'PERL5LIB': '$PERL5LIB' }
-EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi") || $!{ENOENT});
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-my (undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# url and cgiurl are on the same host so the cgiurl is host-relative
-like($content, qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "http://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:http:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:http:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when accessed via HTTPS, links are secure
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "https://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when accessed via a different hostname, links stay on that host
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'staging.example.net';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "http://staging.example.net/wiki/");
-like($bits{stylehref}, qr{^(?:(?:http:)?//staging.example.net)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:http:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
-
-# previewing a page
-$in = 'do=edit&page=a/b/c&Preview';
-run(["./t/tmp/ikiwiki.cgi"], \$in, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'POST';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{CONTENT_LENGTH} = length $in;
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "http://example.com/wiki/a/b/c/");
-like($bits{stylehref}, qr{^(?:(?:http:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
-like($bits{cgihref}, qr{^(?:(?:http:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-#######################################################################
-# site 2: static content and CGI are on different servers
-
-writefile("test.setup", "t/tmp", <<EOF
+	writefile("test.setup", "t/tmp", <<EOF
 # IkiWiki::Setup::Yaml - YAML formatted setup file
 wikiname: this is the name of my wiki
 srcdir: t/tmp/in
 destdir: t/tmp/out
 templatedir: templates
-url: "http://static.example.com/"
-cgiurl: "http://cgi.example.com/ikiwiki.cgi"
+$urlline
+cgiurl: $args{cgiurl}
+$w3mmodeline
 cgi_wrapper: t/tmp/ikiwiki.cgi
 cgi_wrappermode: 0754
+html5: $args{html5}
 # make it easier to test previewing
 add_plugins:
 - anonok
 anonok_pagespec: "*"
-ENV: { 'PERL5LIB': '$PERL5LIB' }
+$reverseproxyline
+ENV: { 'PERL5LIB': 'blib/lib:blib/arch' }
 EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi"));
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-(undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# url and cgiurl are not on the same host so the cgiurl has to be
-# protocol-relative or absolute
-like($content, qr{<a[^>]+href="(?:http:)?//cgi.example.com/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are still relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'cgi.example.com';
-});
-%bits = parse_cgi_content($content);
-like($bits{basehref}, qr{^http://static.example.com/$});
-like($bits{stylehref}, qr{^(?:(?:http:)?//static.example.com)?/style.css$});
-like($bits{tophref}, qr{^(?:http:)?//static.example.com/$});
-like($bits{cgihref}, qr{^(?:(?:http:)?//cgi.example.com)?/ikiwiki.cgi$});
-
-# when accessed via HTTPS, links are secure
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'cgi.example.com';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-TODO: {
-local $TODO = "avoid mixed content";
-like($bits{basehref}, qr{^https://static.example.com/$});
-like($bits{stylehref}, qr{^(?:(?:https:)?//static.example.com)?/style.css$});
-like($bits{tophref}, qr{^(?:https:)?//static.example.com/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//cgi.example.com)?/ikiwiki.cgi$});
+	);
 }
 
-# when accessed via a different hostname, links to the CGI (only) should
-# stay on that host?
-$in = 'do=edit&page=a/b/c&Preview';
-run(["./t/tmp/ikiwiki.cgi"], \$in, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'POST';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/ikiwiki.cgi';
-	$ENV{HTTP_HOST} = 'staging.example.net';
-	$ENV{CONTENT_LENGTH} = length $in;
-});
-%bits = parse_cgi_content($content);
-like($bits{basehref}, qr{^http://static.example.com/a/b/c/$});
-like($bits{stylehref}, qr{^(?:(?:http:)?//static.example.com|\.\./\.\./\.\.)/style.css$});
-like($bits{tophref}, qr{^(?:(?:http:)?//static.example.com|\.\./\.\./\.\.)/$});
-TODO: {
-local $TODO = "use self-referential CGI URL?";
-like($bits{cgihref}, qr{^(?:(?:http:)?//staging.example.net)?/ikiwiki.cgi$});
+sub thoroughly_rebuild {
+	ok(unlink("t/tmp/ikiwiki.cgi") || $!{ENOENT});
+	ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
 }
 
-#######################################################################
-# site 3: we specifically want everything to be secure
+sub check_cgi_mode_bits {
+	my (undef, undef, $mode, undef, undef,
+		undef, undef, undef, undef, undef,
+		undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
+	is($mode & 07777, 0754);
+}
 
-writefile("test.setup", "t/tmp", <<EOF
-# IkiWiki::Setup::Yaml - YAML formatted setup file
-wikiname: this is the name of my wiki
-srcdir: t/tmp/in
-destdir: t/tmp/out
-templatedir: templates
-url: "https://example.com/wiki/"
-cgiurl: "https://example.com/cgi-bin/ikiwiki.cgi"
-cgi_wrapper: t/tmp/ikiwiki.cgi
-cgi_wrappermode: 0754
-# make it easier to test previewing
-add_plugins:
-- anonok
-anonok_pagespec: "*"
-ENV: { 'PERL5LIB': '$PERL5LIB' }
-EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi"));
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-(undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# url and cgiurl are on the same host so the cgiurl is host-relative
-like($content, qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-# when accessed via HTTPS, links are secure
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "https://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when not accessed via HTTPS, links should still be secure
-# (but if this happens, that's a sign of web server misconfiguration)
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-});
-%bits = parse_cgi_content($content);
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-TODO: {
-local $TODO = "treat https in configured url, cgiurl as required?";
-is($bits{basehref}, "https://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+sub check_generated_content {
+	my $cgiurl_regex = shift;
+	ok(-e "t/tmp/out/a/b/c/index.html");
+	my $content = readfile("t/tmp/out/a/b/c/index.html");
+	# no <base> on static HTML
+	unlike($content, qr{<base\W});
+	like($content, $cgiurl_regex);
+	# cross-links between static pages are relative
+	like($content, qr{<li>A: <a href="../../">a</a></li>});
+	like($content, qr{<li>B: <a href="../">b</a></li>});
+	like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
 }
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when accessed via a different hostname, links stay on that host
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'staging.example.net';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "https://staging.example.net/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//staging.example.net)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
-
-# previewing a page
-$in = 'do=edit&page=a/b/c&Preview';
-run(["./t/tmp/ikiwiki.cgi"], \$in, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'POST';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{CONTENT_LENGTH} = length $in;
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-is($bits{basehref}, "https://example.com/wiki/a/b/c/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-#######################################################################
-# site 4 (NetBSD wiki): CGI is secure, static content doesn't have to be
-
-writefile("test.setup", "t/tmp", <<EOF
-# IkiWiki::Setup::Yaml - YAML formatted setup file
-wikiname: this is the name of my wiki
-srcdir: t/tmp/in
-destdir: t/tmp/out
-templatedir: templates
-url: "http://example.com/wiki/"
-cgiurl: "https://example.com/cgi-bin/ikiwiki.cgi"
-cgi_wrapper: t/tmp/ikiwiki.cgi
-cgi_wrappermode: 0754
-# make it easier to test previewing
-add_plugins:
-- anonok
-anonok_pagespec: "*"
-ENV: { 'PERL5LIB': '$PERL5LIB' }
-EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi"));
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-(undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# url and cgiurl are on the same host but different schemes
-like($content, qr{<a[^>]+href="https://example.com/cgi-bin/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-# when accessed via HTTPS, links are secure (to avoid mixed-content)
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-TODO: {
-local $TODO = "avoid mixed content";
-is($bits{basehref}, "https://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+
+sub run_cgi {
+	my (%args) = @_;
+	my ($in, $out);
+	my $is_preview = delete $args{is_preview};
+	my $is_https = delete $args{is_https};
+	my %defaults = (
+		SCRIPT_NAME	=> '/cgi-bin/ikiwiki.cgi',
+		HTTP_HOST	=> 'example.com',
+	);
+	if (defined $is_preview) {
+		$defaults{REQUEST_METHOD} = 'POST';
+		$in = 'do=edit&page=a/b/c&Preview';
+		$defaults{CONTENT_LENGTH} = length $in;
+	} else {
+		$defaults{REQUEST_METHOD} = 'GET';
+		$defaults{QUERY_STRING} = 'do=prefs';
+	}
+	if (defined $is_https) {
+		$defaults{SERVER_PORT} = '443';
+		$defaults{HTTPS} = 'on';
+	} else {
+		$defaults{SERVER_PORT} = '80';
+	}
+	my %envvars = (
+		%defaults,
+		%args,
+	);
+	run(["./t/tmp/ikiwiki.cgi"], \$in, \$out, init => sub {
+		map {
+			$ENV{$_} = $envvars{$_}
+		} keys(%envvars);
+	});
+
+	return $out;
 }
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when not accessed via HTTPS, ???
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'example.com';
-});
-%bits = parse_cgi_content($content);
-like($bits{basehref}, qr{^https?://example.com/wiki/$});
-like($bits{stylehref}, qr{^(?:(?:https?:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:(?:https?://example.com)?/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-
-# when accessed via a different hostname, links stay on that host
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'staging.example.net';
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-TODO: {
-local $TODO = "avoid mixed content";
-like($bits{basehref}, qr{^https://example.com/wiki/$});
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
-like($bits{tophref}, qr{^(?:(?:(?:https:)?//example.com)?/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
+
+sub test_startup {
+	ok(! system("make -s ikiwiki.out"));
+	ok(! system("rm -rf t/tmp"));
+	ok(! system("mkdir t/tmp"));
+
+	write_old_file("a.mdwn", "A");
+	write_old_file("a/b.mdwn", "B");
+	write_old_file("a/b/c.mdwn",
+	"* A: [[a]]\n".
+	"* B: [[b]]\n".
+	"* E: [[a/d/e]]\n");
+	write_old_file("a/d.mdwn", "D");
+	write_old_file("a/d/e.mdwn", "E");
 }
 
-# previewing a page
-$in = 'do=edit&page=a/b/c&Preview';
-run(["./t/tmp/ikiwiki.cgi"], \$in, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'POST';
-	$ENV{SERVER_PORT} = '443';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{HTTP_HOST} = 'example.com';
-	$ENV{CONTENT_LENGTH} = length $in;
-	$ENV{HTTPS} = 'on';
-});
-%bits = parse_cgi_content($content);
-TODO: {
-local $TODO = "avoid mixed content";
-is($bits{basehref}, "https://example.com/wiki/a/b/c/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+sub test_site1_perfectly_ordinary_ikiwiki {
+	write_setup_file(
+		html5	=> 0,
+		url	=> "http://example.com/wiki/",
+		cgiurl	=> "http://example.com/cgi-bin/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host so the cgiurl is host-relative
+	check_generated_content(qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
+	my %bits = parse_cgi_content(run_cgi());
+	is($bits{basehref}, "http://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:http:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:http:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when accessed via HTTPS, links are secure
+	%bits = parse_cgi_content(run_cgi(is_https => 1));
+	is($bits{basehref}, "https://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when accessed via a different hostname, links stay on that host
+	%bits = parse_cgi_content(run_cgi(HTTP_HOST => 'staging.example.net'));
+	is($bits{basehref}, "http://staging.example.net/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:http:)?//staging.example.net)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:http:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1));
+	is($bits{basehref}, "http://example.com/wiki/a/b/c/");
+	like($bits{stylehref}, qr{^(?:(?:http:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:http:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# in html5, the <base> is allowed to be relative, and we take full
+	# advantage of that
+	write_setup_file(
+		html5	=> 1,
+		url	=> "http://example.com/wiki/",
+		cgiurl	=> "http://example.com/cgi-bin/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host so the cgiurl is host-relative
+	check_generated_content(qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
+
+	%bits = parse_cgi_content(run_cgi());
+	is($bits{basehref}, "/wiki/");
+	is($bits{stylehref}, "/wiki/style.css");
+	is($bits{tophref}, "/wiki/");
+	is($bits{cgihref}, "/cgi-bin/ikiwiki.cgi");
+
+	# when accessed via HTTPS, links are secure - this is easy because under
+	# html5 they're independent of the URL at which the CGI was accessed
+	%bits = parse_cgi_content(run_cgi(is_https => 1));
+	is($bits{basehref}, "/wiki/");
+	is($bits{stylehref}, "/wiki/style.css");
+	is($bits{tophref}, "/wiki/");
+	is($bits{cgihref}, "/cgi-bin/ikiwiki.cgi");
+
+	# when accessed via a different hostname, links stay on that host -
+	# this is really easy in html5 because we can use relative URLs
+	%bits = parse_cgi_content(run_cgi(HTTP_HOST => 'staging.example.net'));
+	is($bits{basehref}, "/wiki/");
+	is($bits{stylehref}, "/wiki/style.css");
+	is($bits{tophref}, "/wiki/");
+	is($bits{cgihref}, "/cgi-bin/ikiwiki.cgi");
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1));
+	is($bits{basehref}, "/wiki/a/b/c/");
+	is($bits{stylehref}, "/wiki/style.css");
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	is($bits{cgihref}, "/cgi-bin/ikiwiki.cgi");
 }
-like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
 
-# Deliberately not testing https static content with http cgiurl,
-# because that makes remarkably little sense.
+sub test_site2_static_content_and_cgi_on_different_servers {
+	write_setup_file(
+		html5	=> 0,
+		url	=> "http://static.example.com/",
+		cgiurl	=> "http://cgi.example.com/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are not on the same host so the cgiurl has to be
+	# protocol-relative or absolute
+	check_generated_content(qr{<a[^>]+href="(?:http:)?//cgi.example.com/ikiwiki.cgi\?do=prefs"});
+
+	my %bits = parse_cgi_content(run_cgi(SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'cgi.example.com'));
+	like($bits{basehref}, qr{^http://static.example.com/$});
+	like($bits{stylehref}, qr{^(?:(?:http:)?//static.example.com)?/style.css$});
+	like($bits{tophref}, qr{^(?:http:)?//static.example.com/$});
+	like($bits{cgihref}, qr{^(?:(?:http:)?//cgi.example.com)?/ikiwiki.cgi$});
+
+	# when accessed via HTTPS, links are secure
+	%bits = parse_cgi_content(run_cgi(is_https => 1, SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'cgi.example.com'));
+	like($bits{basehref}, qr{^https://static.example.com/$});
+	like($bits{stylehref}, qr{^(?:(?:https:)?//static.example.com)?/style.css$});
+	like($bits{tophref}, qr{^(?:https:)?//static.example.com/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//cgi.example.com)?/ikiwiki.cgi$});
+
+	# when accessed via a different hostname, links to the CGI (only) should
+	# stay on that host?
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'staging.example.net'));
+	like($bits{basehref}, qr{^http://static.example.com/a/b/c/$});
+	like($bits{stylehref}, qr{^(?:(?:http:)?//static.example.com|\.\./\.\./\.\.)/style.css$});
+	like($bits{tophref}, qr{^(?:(?:http:)?//static.example.com|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:http:)?//(?:staging\.example\.net|cgi\.example\.com))?/ikiwiki.cgi$});
+	TODO: {
+	local $TODO = "use self-referential CGI URL?";
+	like($bits{cgihref}, qr{^(?:(?:http:)?//staging.example.net)?/ikiwiki.cgi$});
+	}
 
-#######################################################################
-# site 5: w3mmode, as documented in [[w3mmode]]
+	write_setup_file(
+		html5	=> 1,
+		url	=> "http://static.example.com/",
+		cgiurl	=> "http://cgi.example.com/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are not on the same host so the cgiurl has to be
+	# protocol-relative or absolute
+	check_generated_content(qr{<a[^>]+href="(?:http:)?//cgi.example.com/ikiwiki.cgi\?do=prefs"});
+
+	%bits = parse_cgi_content(run_cgi(SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'cgi.example.com'));
+	is($bits{basehref}, "//static.example.com/");
+	is($bits{stylehref}, "//static.example.com/style.css");
+	is($bits{tophref}, "//static.example.com/");
+	is($bits{cgihref}, "//cgi.example.com/ikiwiki.cgi");
+
+	# when accessed via HTTPS, links are secure - in fact they're exactly the
+	# same as when accessed via HTTP
+	%bits = parse_cgi_content(run_cgi(is_https => 1, SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'cgi.example.com'));
+	is($bits{basehref}, "//static.example.com/");
+	is($bits{stylehref}, "//static.example.com/style.css");
+	is($bits{tophref}, "//static.example.com/");
+	is($bits{cgihref}, "//cgi.example.com/ikiwiki.cgi");
+
+	# when accessed via a different hostname, links to the CGI (only) should
+	# stay on that host?
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, SCRIPT_NAME => '/ikiwiki.cgi', HTTP_HOST => 'staging.example.net'));
+	is($bits{basehref}, "//static.example.com/a/b/c/");
+	is($bits{stylehref}, "//static.example.com/style.css");
+	is($bits{tophref}, "../../../");
+	like($bits{cgihref}, qr{//(?:staging\.example\.net|cgi\.example\.com)/ikiwiki\.cgi});
+	TODO: {
+	local $TODO = "use self-referential CGI URL maybe?";
+	is($bits{cgihref}, "//staging.example.net/ikiwiki.cgi");
+	}
+}
 
-writefile("test.setup", "t/tmp", <<EOF
-# IkiWiki::Setup::Yaml - YAML formatted setup file
-wikiname: this is the name of my wiki
-srcdir: t/tmp/in
-destdir: t/tmp/out
-templatedir: templates
-cgiurl: ikiwiki.cgi
-w3mmode: 1
-cgi_wrapper: t/tmp/ikiwiki.cgi
-cgi_wrappermode: 0754
-add_plugins:
-- anonok
-anonok_pagespec: "*"
-ENV: { 'PERL5LIB': '$PERL5LIB' }
-EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi"));
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-(undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# FIXME: does /$LIB/ikiwiki-w3m.cgi work under w3m?
-like($content, qr{<a[^>]+href="(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are still relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{PATH_INFO} = '/ikiwiki.cgi';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki-w3m.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-});
-%bits = parse_cgi_content($content);
-like($bits{tophref}, qr{^(?:\Q$pwd\E/t/tmp/out|\.)/$});
-like($bits{cgihref}, qr{^(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi$});
-like($bits{basehref}, qr{^(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out/$});
-like($bits{stylehref}, qr{^(?:(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out|\.)/style.css$});
-
-#######################################################################
-# site 6: we're behind a reverse-proxy
-
-writefile("test.setup", "t/tmp", <<EOF
-# IkiWiki::Setup::Yaml - YAML formatted setup file
-wikiname: this is the name of my wiki
-srcdir: t/tmp/in
-destdir: t/tmp/out
-templatedir: templates
-url: "https://example.com/wiki/"
-cgiurl: "https://example.com/cgi-bin/ikiwiki.cgi"
-cgi_wrapper: t/tmp/ikiwiki.cgi
-cgi_wrappermode: 0754
-# make it easier to test previewing
-add_plugins:
-- anonok
-anonok_pagespec: "*"
-reverse_proxy: 1
-ENV: { 'PERL5LIB': '$PERL5LIB' }
-EOF
-);
-
-ok(unlink("t/tmp/ikiwiki.cgi"));
-ok(! system("./ikiwiki.out --setup t/tmp/test.setup --rebuild --wrappers"));
-
-# CGI wrapper should be exactly the requested mode
-(undef, undef, $mode, undef, undef,
-	undef, undef, undef, undef, undef,
-	undef, undef, undef) = stat("t/tmp/ikiwiki.cgi");
-is($mode & 07777, 0754);
-
-ok(-e "t/tmp/out/a/b/c/index.html");
-$content = readfile("t/tmp/out/a/b/c/index.html");
-# no <base> on static HTML
-unlike($content, qr{<base\W});
-# url and cgiurl are on the same host so the cgiurl is host-relative
-like($content, qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
-# cross-links between static pages are relative
-like($content, qr{<li>A: <a href="../../">a</a></li>});
-like($content, qr{<li>B: <a href="../">b</a></li>});
-like($content, qr{<li>E: <a href="../../d/e/">e</a></li>});
-
-# because we are behind a reverse-proxy we must assume that
-# we're being accessed by the configured cgiurl
-run(["./t/tmp/ikiwiki.cgi"], \undef, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'GET';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{QUERY_STRING} = 'do=prefs';
-	$ENV{HTTP_HOST} = 'localhost';
-});
-%bits = parse_cgi_content($content);
-like($bits{tophref}, qr{^(?:/wiki|\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-TODO: {
-local $TODO = "reverse-proxy support needed";
-is($bits{basehref}, "https://example.com/wiki/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+sub test_site3_we_specifically_want_everything_to_be_secure {
+	write_setup_file(
+		html5	=> 0,
+		url	=> "https://example.com/wiki/",
+		cgiurl	=> "https://example.com/cgi-bin/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host so the cgiurl is host-relative
+	check_generated_content(qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
+
+	# when accessed via HTTPS, links are secure
+	my %bits = parse_cgi_content(run_cgi(is_https => 1));
+	is($bits{basehref}, "https://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when not accessed via HTTPS, links should still be secure
+	# (but if this happens, that's a sign of web server misconfiguration)
+	%bits = parse_cgi_content(run_cgi());
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	TODO: {
+	local $TODO = "treat https in configured url, cgiurl as required?";
+	is($bits{basehref}, "https://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	}
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when accessed via a different hostname, links stay on that host
+	%bits = parse_cgi_content(run_cgi(is_https => 1, HTTP_HOST => 'staging.example.net'));
+	is($bits{basehref}, "https://staging.example.net/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//staging.example.net)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, is_https => 1));
+	is($bits{basehref}, "https://example.com/wiki/a/b/c/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# not testing html5: 0 here because that ends up identical to site 1
 }
 
-# previewing a page
-$in = 'do=edit&page=a/b/c&Preview';
-run(["./t/tmp/ikiwiki.cgi"], \$in, \$content, init => sub {
-	$ENV{REQUEST_METHOD} = 'POST';
-	$ENV{SERVER_PORT} = '80';
-	$ENV{SCRIPT_NAME} = '/cgi-bin/ikiwiki.cgi';
-	$ENV{HTTP_HOST} = 'localhost';
-	$ENV{CONTENT_LENGTH} = length $in;
-});
-%bits = parse_cgi_content($content);
-like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
-like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
-TODO: {
-local $TODO = "reverse-proxy support needed";
-is($bits{basehref}, "https://example.com/wiki/a/b/c/");
-like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+sub test_site4_cgi_is_secure_static_content_doesnt_have_to_be {
+	# (NetBSD wiki)
+	write_setup_file(
+		html5	=> 0,
+		url	=> "http://example.com/wiki/",
+		cgiurl	=> "https://example.com/cgi-bin/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host but different schemes
+	check_generated_content(qr{<a[^>]+href="https://example.com/cgi-bin/ikiwiki.cgi\?do=prefs"});
+
+	# when accessed via HTTPS, links are secure (to avoid mixed-content)
+	my %bits = parse_cgi_content(run_cgi(is_https => 1));
+	is($bits{basehref}, "https://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when not accessed via HTTPS, ???
+	%bits = parse_cgi_content(run_cgi());
+	like($bits{basehref}, qr{^https?://example.com/wiki/$});
+	like($bits{stylehref}, qr{^(?:(?:https?:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:(?:https?://example.com)?/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when accessed via a different hostname, links stay on that host
+	%bits = parse_cgi_content(run_cgi(is_https => 1, HTTP_HOST => 'staging.example.net'));
+	# because the static and dynamic stuff is on the same server, we assume that
+	# both are also on the staging server
+	like($bits{basehref}, qr{^https://staging.example.net/wiki/$});
+	like($bits{stylehref}, qr{^(?:(?:https:)?//staging.example.net)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:(?:(?:https:)?//staging.example.net)?/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//(?:staging\.example\.net|example\.com))?/cgi-bin/ikiwiki.cgi$});
+	TODO: {
+	local $TODO = "this should really point back to itself but currently points to example.com";
+	like($bits{cgihref}, qr{^(?:(?:https:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
+	}
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, is_https => 1));
+	is($bits{basehref}, "https://example.com/wiki/a/b/c/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	write_setup_file(
+		html5	=> 1,
+		url	=> "http://example.com/wiki/",
+		cgiurl	=> "https://example.com/cgi-bin/ikiwiki.cgi",
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host but different schemes
+	check_generated_content(qr{<a[^>]+href="https://example.com/cgi-bin/ikiwiki.cgi\?do=prefs"});
+
+	# when accessed via HTTPS, links are secure (to avoid mixed-content)
+	%bits = parse_cgi_content(run_cgi(is_https => 1));
+	is($bits{basehref}, "/wiki/");
+	is($bits{stylehref}, "/wiki/style.css");
+	is($bits{tophref}, "/wiki/");
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when not accessed via HTTPS, ???
+	%bits = parse_cgi_content(run_cgi());
+	like($bits{basehref}, qr{^(?:https?://example.com)?/wiki/$});
+	like($bits{stylehref}, qr{^(?:(?:https?:)?//example.com)?/wiki/style.css$});
+	like($bits{tophref}, qr{^(?:(?:https?://example.com)?/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# when accessed via a different hostname, links stay on that host
+	%bits = parse_cgi_content(run_cgi(is_https => 1, HTTP_HOST => 'staging.example.net'));
+	# because the static and dynamic stuff is on the same server, we assume that
+	# both are also on the staging server
+	is($bits{basehref}, "/wiki/");
+	is($bits{stylehref}, "/wiki/style.css");
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//(?:example\.com|staging\.example\.net))?/cgi-bin/ikiwiki.cgi$});
+	TODO: {
+	local $TODO = "this should really point back to itself but currently points to example.com";
+	like($bits{cgihref}, qr{^(?:(?:https:)?//staging.example.net)?/cgi-bin/ikiwiki.cgi$});
+	}
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, is_https => 1));
+	is($bits{basehref}, "/wiki/a/b/c/");
+	is($bits{stylehref}, "/wiki/style.css");
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+
+	# Deliberately not testing https static content with http cgiurl,
+	# because that makes remarkably little sense.
 }
 
-done_testing;
+sub test_site5_w3mmode {
+	# as documented in [[w3mmode]]
+	write_setup_file(
+		html5	=> 0, 
+		url	=> undef,
+		cgiurl	=> "ikiwiki.cgi",
+		w3mmode	=> 1,
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# FIXME: does /$LIB/ikiwiki-w3m.cgi work under w3m?
+	check_generated_content(qr{<a[^>]+href="(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi\?do=prefs"});
+
+	my %bits = parse_cgi_content(run_cgi(PATH_INFO => '/ikiwiki.cgi', SCRIPT_NAME => '/cgi-bin/ikiwiki-w3m.cgi'));
+	my $pwd = getcwd();
+	like($bits{tophref}, qr{^(?:\Q$pwd\E/t/tmp/out|\.)/$});
+	like($bits{cgihref}, qr{^(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi$});
+	like($bits{basehref}, qr{^(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out/$});
+	like($bits{stylehref}, qr{^(?:(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out|\.)/style.css$});
+
+	write_setup_file(
+		html5	=> 1,
+		url	=> undef,
+		cgiurl	=> "ikiwiki.cgi",
+		w3mmode	=> 1,
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# FIXME: does /$LIB/ikiwiki-w3m.cgi work under w3m?
+	check_generated_content(qr{<a[^>]+href="(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi\?do=prefs"});
+
+	%bits = parse_cgi_content(run_cgi(PATH_INFO => '/ikiwiki.cgi', SCRIPT_NAME => '/cgi-bin/ikiwiki-w3m.cgi'));
+	like($bits{tophref}, qr{^(?:\Q$pwd\E/t/tmp/out|\.)/$});
+	like($bits{cgihref}, qr{^(?:file://)?/\$LIB/ikiwiki-w3m.cgi/ikiwiki.cgi$});
+	like($bits{basehref}, qr{^(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out/$});
+	like($bits{stylehref}, qr{^(?:(?:(?:file:)?//)?\Q$pwd\E/t/tmp/out|\.)/style.css$});
+}
+
+sub test_site6_behind_reverse_proxy {
+	write_setup_file(
+		html5	=> 0,
+		url	=> "https://example.com/wiki/",
+		cgiurl	=> "https://example.com/cgi-bin/ikiwiki.cgi",
+		reverse_proxy => 1,
+	);
+	thoroughly_rebuild();
+	check_cgi_mode_bits();
+	# url and cgiurl are on the same host so the cgiurl is host-relative
+	check_generated_content(qr{<a[^>]+href="/cgi-bin/ikiwiki.cgi\?do=prefs"});
+
+	# because we are behind a reverse-proxy we must assume that
+	# we're being accessed by the configured cgiurl
+	my %bits = parse_cgi_content(run_cgi(HTTP_HOST => 'localhost'));
+	like($bits{tophref}, qr{^(?:/wiki|\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+	is($bits{basehref}, "https://example.com/wiki/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+
+	# previewing a page
+	%bits = parse_cgi_content(run_cgi(is_preview => 1, HTTP_HOST => 'localhost'));
+	like($bits{tophref}, qr{^(?:/wiki|\.\./\.\./\.\.)/$});
+	like($bits{cgihref}, qr{^(?:(?:https:)?//example.com)?/cgi-bin/ikiwiki.cgi$});
+	is($bits{basehref}, "https://example.com/wiki/a/b/c/");
+	like($bits{stylehref}, qr{^(?:(?:https:)?//example.com)?/wiki/style.css$});
+
+	# not testing html5: 1 because it would be the same as site 1 -
+	# the reverse_proxy config option is unnecessary under html5
+}
+
+test_startup();
+
+test_site1_perfectly_ordinary_ikiwiki();
+test_site2_static_content_and_cgi_on_different_servers();
+test_site3_we_specifically_want_everything_to_be_secure();
+test_site4_cgi_is_secure_static_content_doesnt_have_to_be();
+test_site5_w3mmode();
+test_site6_behind_reverse_proxy();
+
+done_testing();