Examples with HttpPrincipal org.apache.camel.component.netty4.http.HttpPrincipal used on opensource projects

Example 1 with HttpPrincipal

use of org.apache.camel.component.netty4.http.HttpPrincipal in project camel by apache.

the class HttpServerChannelHandler method extractBasicAuthSubject.

/**
     * Extracts the username and password details from the HTTP basic header Authorization.
     * <p/>
     * This requires that the <tt>Authorization</tt> HTTP header is provided, and its using Basic.
     * Currently Digest is <b>not</b> supported.
     *
     * @return {@link HttpPrincipal} with username and password details, or <tt>null</tt> if not possible to extract
     */
protected static HttpPrincipal extractBasicAuthSubject(HttpRequest request) {
    String auth = request.headers().get("Authorization");
    if (auth != null) {
        String constraint = ObjectHelper.before(auth, " ");
        if (constraint != null) {
            if ("Basic".equalsIgnoreCase(constraint.trim())) {
                String decoded = ObjectHelper.after(auth, " ");
                // the decoded part is base64 encoded, so we need to decode that
                ByteBuf buf = NettyConverter.toByteBuffer(decoded.getBytes());
                ByteBuf out = Base64.decode(buf);
                try {
                    String userAndPw = out.toString(Charset.defaultCharset());
                    String username = ObjectHelper.before(userAndPw, ":");
                    String password = ObjectHelper.after(userAndPw, ":");
                    HttpPrincipal principal = new HttpPrincipal(username, password);
                    LOG.debug("Extracted Basic Auth principal from HTTP header: {}", principal);
                    return principal;
                } finally {
                    buf.release();
                    out.release();
                }
            }
        }
    }
    return null;
}

Example 2 with HttpPrincipal

use of org.apache.camel.component.netty4.http.HttpPrincipal in project camel by apache.

the class HttpServerChannelHandler method channelRead0.

@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
    HttpRequest request = (HttpRequest) msg;
    LOG.debug("Message received: {}", request);
    if (consumer.isSuspended()) {
        // are we suspended?
        LOG.debug("Consumer suspended, cannot service request {}", request);
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, SERVICE_UNAVAILABLE);
        response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
        response.headers().set(Exchange.CONTENT_LENGTH, 0);
        ctx.writeAndFlush(response);
        ctx.channel().close();
        return;
    }
    // if its an OPTIONS request then return which methods is allowed
    boolean isRestrictedToOptions = consumer.getEndpoint().getHttpMethodRestrict() != null && consumer.getEndpoint().getHttpMethodRestrict().contains("OPTIONS");
    if ("OPTIONS".equals(request.method().name()) && !isRestrictedToOptions) {
        String s;
        if (consumer.getEndpoint().getHttpMethodRestrict() != null) {
            s = "OPTIONS," + consumer.getEndpoint().getHttpMethodRestrict();
        } else {
            // allow them all
            s = "GET,HEAD,POST,PUT,DELETE,TRACE,OPTIONS,CONNECT,PATCH";
        }
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
        response.headers().set("Allow", s);
        response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
        response.headers().set(Exchange.CONTENT_LENGTH, 0);
        ctx.writeAndFlush(response);
        return;
    }
    if (consumer.getEndpoint().getHttpMethodRestrict() != null && !consumer.getEndpoint().getHttpMethodRestrict().contains(request.method().name())) {
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, METHOD_NOT_ALLOWED);
        response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
        response.headers().set(Exchange.CONTENT_LENGTH, 0);
        ctx.writeAndFlush(response);
        ctx.channel().close();
        return;
    }
    if ("TRACE".equals(request.method().name()) && !consumer.getEndpoint().isTraceEnabled()) {
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, METHOD_NOT_ALLOWED);
        response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
        response.headers().set(Exchange.CONTENT_LENGTH, 0);
        ctx.writeAndFlush(response);
        ctx.channel().close();
        return;
    }
    // must include HOST header as required by HTTP 1.1
    if (!request.headers().contains(HttpHeaderNames.HOST.toString())) {
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, BAD_REQUEST);
        //response.setChunked(false);
        response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
        response.headers().set(Exchange.CONTENT_LENGTH, 0);
        ctx.writeAndFlush(response);
        ctx.channel().close();
        return;
    }
    // is basic auth configured
    NettyHttpSecurityConfiguration security = consumer.getEndpoint().getSecurityConfiguration();
    if (security != null && security.isAuthenticate() && "Basic".equalsIgnoreCase(security.getConstraint())) {
        String url = request.uri();
        // drop parameters from url
        if (url.contains("?")) {
            url = ObjectHelper.before(url, "?");
        }
        // we need the relative path without the hostname and port
        URI uri = new URI(request.uri());
        String target = uri.getPath();
        // strip the starting endpoint path so the target is relative to the endpoint uri
        String path = consumer.getConfiguration().getPath();
        if (path != null && target.startsWith(path)) {
            // need to match by lower case as we want to ignore case on context-path
            path = path.toLowerCase(Locale.US);
            String match = target.toLowerCase(Locale.US);
            if (match.startsWith(path)) {
                target = target.substring(path.length());
            }
        }
        // is it a restricted resource?
        String roles;
        if (security.getSecurityConstraint() != null) {
            // if restricted returns null, then the resource is not restricted and we should not authenticate the user
            roles = security.getSecurityConstraint().restricted(target);
        } else {
            // assume any roles is valid if no security constraint has been configured
            roles = "*";
        }
        if (roles != null) {
            // basic auth subject
            HttpPrincipal principal = extractBasicAuthSubject(request);
            // authenticate principal and check if the user is in role
            Subject subject = null;
            boolean inRole = true;
            if (principal != null) {
                subject = authenticate(security.getSecurityAuthenticator(), security.getLoginDeniedLoggingLevel(), principal);
                if (subject != null) {
                    String userRoles = security.getSecurityAuthenticator().getUserRoles(subject);
                    inRole = matchesRoles(roles, userRoles);
                }
            }
            if (principal == null || subject == null || !inRole) {
                if (principal == null) {
                    LOG.debug("Http Basic Auth required for resource: {}", url);
                } else if (subject == null) {
                    LOG.debug("Http Basic Auth not authorized for username: {}", principal.getUsername());
                } else {
                    LOG.debug("Http Basic Auth not in role for username: {}", principal.getUsername());
                }
                // restricted resource, so send back 401 to require valid username/password
                HttpResponse response = new DefaultHttpResponse(HTTP_1_1, UNAUTHORIZED);
                response.headers().set("WWW-Authenticate", "Basic realm=\"" + security.getRealm() + "\"");
                response.headers().set(Exchange.CONTENT_TYPE, "text/plain");
                response.headers().set(Exchange.CONTENT_LENGTH, 0);
                ctx.writeAndFlush(response);
                // close the channel
                ctx.channel().close();
                return;
            } else {
                LOG.debug("Http Basic Auth authorized for username: {}", principal.getUsername());
            }
        }
    }
    // let Camel process this message
    super.channelRead0(ctx, msg);
}