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| 1 | +package no.nav.vedtak.sikkerhet.jaxrs; |
| 2 | + |
| 3 | +import java.lang.reflect.Method; |
| 4 | +import java.time.Instant; |
| 5 | +import java.util.Optional; |
| 6 | + |
| 7 | +import javax.ws.rs.WebApplicationException; |
| 8 | +import javax.ws.rs.container.ContainerRequestContext; |
| 9 | +import javax.ws.rs.container.ResourceInfo; |
| 10 | +import javax.ws.rs.core.Cookie; |
| 11 | +import javax.ws.rs.core.HttpHeaders; |
| 12 | +import javax.ws.rs.core.Response; |
| 13 | + |
| 14 | +import org.jose4j.jwt.MalformedClaimException; |
| 15 | +import org.slf4j.Logger; |
| 16 | +import org.slf4j.LoggerFactory; |
| 17 | + |
| 18 | +import no.nav.vedtak.log.mdc.MDCOperations; |
| 19 | +import no.nav.vedtak.sikkerhet.abac.BeskyttetRessurs; |
| 20 | +import no.nav.vedtak.sikkerhet.abac.ÅpenRessurs; |
| 21 | +import no.nav.vedtak.sikkerhet.kontekst.BasisKontekst; |
| 22 | +import no.nav.vedtak.sikkerhet.kontekst.KontekstHolder; |
| 23 | +import no.nav.vedtak.sikkerhet.kontekst.RequestKontekst; |
| 24 | +import no.nav.vedtak.sikkerhet.oidc.config.ConfigProvider; |
| 25 | +import no.nav.vedtak.sikkerhet.oidc.token.OpenIDToken; |
| 26 | +import no.nav.vedtak.sikkerhet.oidc.token.TokenString; |
| 27 | +import no.nav.vedtak.sikkerhet.oidc.validator.JwtUtil; |
| 28 | +import no.nav.vedtak.sikkerhet.oidc.validator.OidcTokenValidator; |
| 29 | +import no.nav.vedtak.sikkerhet.oidc.validator.OidcTokenValidatorConfig; |
| 30 | +import no.nav.vedtak.sikkerhet.oidc.validator.OidcTokenValidatorResult; |
| 31 | + |
| 32 | +/** |
| 33 | + * Bruksanvisning inntil alle er over og det evt samles her: |
| 34 | + * - App må lage et filter som implementerer ContainerRequestFilter |
| 35 | + * - Filter må annotert med Provider og legges inn i Application/getClasses() |
| 36 | + * - Legg på @Context private ResourceInfo resourceinfo |
| 37 | + * - Kall AuthenticationFilterDelegate . validerSettKontekst og la evt exceptions passere ut til Jersey |
| 38 | + * |
| 39 | + * App må også ha et ContainerResponseFilter som kaller AuthenticationFilterDelegate . fjernKontekst |
| 40 | + */ |
| 41 | +public class AuthenticationFilterDelegate { |
| 42 | + |
| 43 | + private static final Logger LOG = LoggerFactory.getLogger(AuthenticationFilterDelegate.class); |
| 44 | + |
| 45 | + private static final String ID_TOKEN_COOKIE_NAME = "ID_token"; |
| 46 | + private static final String AUTHORIZATION_HEADER = HttpHeaders.AUTHORIZATION; |
| 47 | + |
| 48 | + private AuthenticationFilterDelegate() { |
| 49 | + } |
| 50 | + |
| 51 | + |
| 52 | + public static void validerSettKontekst(ResourceInfo resourceInfo, ContainerRequestContext ctx) { |
| 53 | + validerSettKontekst(resourceInfo, ctx, null); |
| 54 | + } |
| 55 | + |
| 56 | + public static void validerSettKontekst(ResourceInfo resourceInfo, ContainerRequestContext ctx, String cookiePath) { |
| 57 | + try { |
| 58 | + Method method = resourceInfo.getResourceMethod(); |
| 59 | + var beskyttetRessurs = method.getAnnotation(BeskyttetRessurs.class); |
| 60 | + var åpenRessurs = method.getAnnotation(ÅpenRessurs.class); |
| 61 | + var metodenavn = method.getName(); |
| 62 | + LOG.trace("{} i klasse {}", metodenavn, method.getDeclaringClass()); |
| 63 | + setCallAndConsumerId(ctx); |
| 64 | + if (beskyttetRessurs == null && (åpenRessurs != null || method.getDeclaringClass().getName().startsWith("io.swagger"))) { |
| 65 | + KontekstHolder.setKontekst(BasisKontekst.ikkeAutentisertRequest(MDCOperations.getConsumerId())); |
| 66 | + LOG.trace("{} er whitelisted", metodenavn); |
| 67 | + } else if (beskyttetRessurs == null) { |
| 68 | + throw new WebApplicationException(metodenavn + " mangler annotering", Response.Status.INTERNAL_SERVER_ERROR); |
| 69 | + } else { |
| 70 | + var tokenString = getTokenFromHeader(ctx) |
| 71 | + .or(() -> getCookie(ctx, cookiePath)) |
| 72 | + .orElseThrow(() -> new TokenFeil("Mangler token")); |
| 73 | + validerToken(tokenString); |
| 74 | + } |
| 75 | + } catch (MalformedClaimException|TokenFeil e) { |
| 76 | + throw new WebApplicationException(e, Response.Status.FORBIDDEN); |
| 77 | + } catch (WebApplicationException e) { |
| 78 | + throw e; |
| 79 | + } catch (Exception e) { |
| 80 | + throw new WebApplicationException(e, Response.Status.UNAUTHORIZED); |
| 81 | + } |
| 82 | + } |
| 83 | + |
| 84 | + public static void fjernKontekst() { |
| 85 | + if (KontekstHolder.harKontekst()) { |
| 86 | + KontekstHolder.fjernKontekst(); |
| 87 | + } |
| 88 | + } |
| 89 | + |
| 90 | + private static void setCallAndConsumerId(ContainerRequestContext request) { |
| 91 | + String callId = Optional.ofNullable(request.getHeaderString(MDCOperations.HTTP_HEADER_CALL_ID)) // NOSONAR Akseptertet headere |
| 92 | + .or(() -> Optional.ofNullable(request.getHeaderString(MDCOperations.HTTP_HEADER_ALT_CALL_ID))) |
| 93 | + .orElseGet(MDCOperations::generateCallId); |
| 94 | + MDCOperations.putCallId(callId); |
| 95 | + |
| 96 | + Optional.ofNullable(request.getHeaderString(MDCOperations.HTTP_HEADER_CONSUMER_ID)) |
| 97 | + .ifPresent(MDCOperations::putConsumerId); |
| 98 | + } |
| 99 | + |
| 100 | + private static Optional<TokenString> getTokenFromHeader(ContainerRequestContext request) { |
| 101 | + String headerValue = request.getHeaderString(AUTHORIZATION_HEADER); |
| 102 | + return headerValue != null && headerValue.startsWith(OpenIDToken.OIDC_DEFAULT_TOKEN_TYPE) |
| 103 | + ? Optional.of(new TokenString(headerValue.substring(OpenIDToken.OIDC_DEFAULT_TOKEN_TYPE.length()))) |
| 104 | + : Optional.empty(); |
| 105 | + } |
| 106 | + |
| 107 | + private static Optional<TokenString> getCookie(ContainerRequestContext request, String cookiePath) { |
| 108 | + if (cookiePath == null || request.getCookies() == null) { |
| 109 | + return Optional.empty(); |
| 110 | + } |
| 111 | + return request.getCookies().values().stream() |
| 112 | + .filter(c -> c.getValue() != null) |
| 113 | + .filter(c -> ID_TOKEN_COOKIE_NAME.equalsIgnoreCase(c.getName())) |
| 114 | + .filter(c -> cookiePath.equalsIgnoreCase(c.getPath())) |
| 115 | + .findFirst() |
| 116 | + .or(() -> request.getCookies().values().stream() |
| 117 | + .filter(c -> c.getValue() != null) |
| 118 | + .filter(c -> ID_TOKEN_COOKIE_NAME.equalsIgnoreCase(c.getName())) |
| 119 | + .findFirst()) |
| 120 | + .map(Cookie::getValue) |
| 121 | + .map(TokenString::new); |
| 122 | + } |
| 123 | + |
| 124 | + public static void validerToken(TokenString tokenString) throws MalformedClaimException { |
| 125 | + // Sett opp OpenIDToken |
| 126 | + var claims = JwtUtil.getClaims(tokenString.token()); |
| 127 | + var configuration = ConfigProvider.getOpenIDConfiguration(claims.getIssuer()) |
| 128 | + .orElseThrow(() -> new TokenFeil("Token mangler issuer claim")); |
| 129 | + var expiresAt = Optional.ofNullable(JwtUtil.getExpirationTime(claims)).orElseGet(() -> Instant.now().plusSeconds(300)); |
| 130 | + var token = new OpenIDToken(configuration.type(), OpenIDToken.OIDC_DEFAULT_TOKEN_TYPE, tokenString, null, expiresAt.toEpochMilli()); |
| 131 | + |
| 132 | + // Valider |
| 133 | + var tokenValidator = OidcTokenValidatorConfig.instance().getValidator(token.provider()); |
| 134 | + var validateResult = tokenValidator.validate(token.primary()); |
| 135 | + |
| 136 | + // Håndter valideringsresultat |
| 137 | + if (needToRefreshToken(token, validateResult, tokenValidator)) { |
| 138 | + throw new ValideringsFeil("Token expired"); |
| 139 | + } |
| 140 | + if (validateResult.isValid()) { |
| 141 | + KontekstHolder.setKontekst(RequestKontekst.forRequest(validateResult.subject(), validateResult.compactSubject(), validateResult.identType(), token)); |
| 142 | + LOG.trace("token validert"); |
| 143 | + } else { |
| 144 | + throw new ValideringsFeil("Ugyldig token"); |
| 145 | + } |
| 146 | + } |
| 147 | + |
| 148 | + private static boolean needToRefreshToken(OpenIDToken token, OidcTokenValidatorResult validateResult, OidcTokenValidator tokenValidator) { |
| 149 | + return !validateResult.isValid() && tokenValidator.validateWithoutExpirationTime(token.primary()).isValid(); |
| 150 | + } |
| 151 | + |
| 152 | + private static class TokenFeil extends RuntimeException { |
| 153 | + TokenFeil(String message) { |
| 154 | + super(message); |
| 155 | + } |
| 156 | + } |
| 157 | + |
| 158 | + private static class ValideringsFeil extends RuntimeException { |
| 159 | + ValideringsFeil(String message) { |
| 160 | + super(message); |
| 161 | + } |
| 162 | + } |
| 163 | + |
| 164 | +} |
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