1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.http.filter.security.cors;
import java.time.Duration;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
/**
* @author bjorncs
*/
class CorsLogic {
private CorsLogic() {}
static final String CORS_PREFLIGHT_REQUEST_CACHE_TTL = Long.toString(Duration.ofDays(7).getSeconds());
static final String ALLOW_ORIGIN_HEADER = "Access-Control-Allow-Origin";
static final Map<String, String> ACCESS_CONTROL_HEADERS = Map.of(
"Access-Control-Max-Age", CORS_PREFLIGHT_REQUEST_CACHE_TTL,
"Access-Control-Allow-Headers", "Origin,Content-Type,Accept,Yahoo-Principal-Auth,Okta-Identity-Token," +
"Okta-Access-Token,Okta-Refresh-Token,Vespa-Csrf-Token",
"Access-Control-Allow-Methods", "OPTIONS,GET,PUT,DELETE,POST,PATCH",
"Access-Control-Allow-Credentials", "true",
"Vary", "*"
);
static Map<String, String> createCorsResponseHeaders(String requestOriginHeader,
Set<String> allowedOrigins) {
if (requestOriginHeader == null) return Map.of();
TreeMap<String, String> headers = new TreeMap<>();
if (requestOriginMatchesAnyAllowed(requestOriginHeader, allowedOrigins))
headers.put(ALLOW_ORIGIN_HEADER, requestOriginHeader);
headers.putAll(ACCESS_CONTROL_HEADERS);
return headers;
}
static Map<String, String> createCorsPreflightResponseHeaders(String requestOriginHeader,
Set<String> allowedOrigins) {
return createCorsResponseHeaders(requestOriginHeader, allowedOrigins);
}
private static boolean requestOriginMatchesAnyAllowed(String requestOrigin, Set<String> allowedUrls) {
return allowedUrls.stream().anyMatch(requestOrigin::equals) || allowedUrls.contains("*");
}
}
|
