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Merge pull request #2344 from aledbf/xss-base-tag

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Escape variables in add-base-url annotation
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k8s-ci-robot 2018-04-13 10:11:00 -07:00 • committed by GitHub
commit 361e53ffa9
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2 changed files with 76 additions and 62 deletions
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38
internal/ingress/controller/template/template.go
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@ -418,39 +418,43 @@ func buildProxyPass(host string, b interface{}, loc interface{}, dynamicConfigur
}
if len(location.Rewrite.Target) > 0 {
abu := ""
var abu string
var xForwardedPrefix string
if location.Rewrite.AddBaseURL {
// path has a slash suffix, so that it can be connected with baseuri directly
bPath := fmt.Sprintf("%s%s", path, "$baseuri")
bPath := fmt.Sprintf("%s$escaped_base_uri", path)
regex := `(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)`
scheme := "$scheme"
if len(location.Rewrite.BaseURLScheme) > 0 {
abu = fmt.Sprintf(`subs_filter '%v' '$1<base href="%v://$http_host%v">' ro;
`, regex, location.Rewrite.BaseURLScheme, bPath)
} else {
abu = fmt.Sprintf(`subs_filter '%v' '$1<base href="$scheme://$http_host%v">' ro;
`, regex, bPath)
scheme = location.Rewrite.BaseURLScheme
}
abu = fmt.Sprintf(`
set_escape_uri $escaped_base_uri $baseuri;
subs_filter '%v' '$1<base href="%v://$http_host%v">' ro;
`, regex, scheme, bPath)
}
xForwardedPrefix := ""
if location.XForwardedPrefix {
xForwardedPrefix = fmt.Sprintf(`proxy_set_header X-Forwarded-Prefix "%s";
`, path)
xForwardedPrefix = fmt.Sprintf("proxy_set_header X-Forwarded-Prefix \"%s\";\n", path)
}
if location.Rewrite.Target == slash {
// special case redirect to /
// ie /something to /
return fmt.Sprintf(`
rewrite %s(.*) /$1 break;
rewrite %s / break;
%v%v %s://%s;
%v`, path, location.Path, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
rewrite %s(.*) /$1 break;
rewrite %s / break;
%v%v %s://%s;
%v`, path, location.Path, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
}
return fmt.Sprintf(`
rewrite %s(.*) %s/$1 break;
%v%v %s://%s;
%v`, path, location.Rewrite.Target, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
rewrite %s(.*) %s/$1 break;
%v%v %s://%s;
%v`, path, location.Rewrite.Target, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
}
// default proxy_pass