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34 package info.magnolia.cms.security;
35
36 import static info.magnolia.cms.util.ExceptionUtil.*;
37 import static javax.servlet.http.HttpServletResponse.*;
38
39 import info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter;
40 import info.magnolia.cms.security.auth.callback.HttpClientCallback;
41
42 import java.io.IOException;
43 import java.util.ArrayList;
44 import java.util.List;
45
46 import javax.servlet.FilterChain;
47 import javax.servlet.ServletException;
48 import javax.servlet.http.HttpServletRequest;
49 import javax.servlet.http.HttpServletResponse;
50 import javax.servlet.http.HttpServletResponseWrapper;
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64 public class SecurityCallbackFilter extends OncePerRequestAbstractMgnlFilter {
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68
69 private final List<HttpClientCallback> clientCallbacks;
70
71 public SecurityCallbackFilter() {
72 this.clientCallbacks = new ArrayList<>();
73 }
74
75 @Override
76 public void doFilter(HttpServletRequest request, HttpServletResponse originalResponse, FilterChain chain) throws IOException, ServletException {
77 final StatusSniffingResponseWrapper response = new StatusSniffingResponseWrapper(originalResponse);
78 try {
79 chain.doFilter(request, response);
80 if (needsCallback(response)) {
81 selectAndHandleCallback(request, response);
82 }
83 } catch (Throwable e) {
84
85 if (wasCausedBy(e, javax.jcr.AccessDeniedException.class)) {
86 response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
87 selectAndHandleCallback(request, response);
88 } else {
89 rethrow(e, IOException.class, ServletException.class);
90 }
91 }
92 }
93
94 protected boolean needsCallback(StatusSniffingResponseWrapper response) {
95 final int status = response.getStatus();
96 return status == SC_FORBIDDEN || status == SC_UNAUTHORIZED;
97 }
98
99 protected void selectAndHandleCallback(HttpServletRequest request, StatusSniffingResponseWrapper response) {
100 selectClientCallback(request).handle(request, response);
101 }
102
103 protected HttpClientCallback selectClientCallback(HttpServletRequest request) {
104 for (HttpClientCallback clientCallback : clientCallbacks) {
105 if (clientCallback.accepts(request)) {
106 return clientCallback;
107 }
108 }
109 throw new IllegalStateException("No configured callback accepted this request " + request.toString());
110 }
111
112
113 public void addClientCallback(HttpClientCallback clientCallback) {
114 this.clientCallbacks.add(clientCallback);
115 }
116
117 public void setClientCallbacks(List<HttpClientCallback> clientCallbacks) {
118 this.clientCallbacks.addAll(clientCallbacks);
119 }
120
121
122 public List<HttpClientCallback> getClientCallbacks() {
123 return clientCallbacks;
124 }
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133 public static class StatusSniffingResponseWrapper extends HttpServletResponseWrapper {
134 private int status = SC_OK;
135
136 public StatusSniffingResponseWrapper(HttpServletResponse response) {
137 super(response);
138 }
139
140 public int getStatus() {
141 return status;
142 }
143
144 @Override
145 public void reset() {
146 super.reset();
147 status = SC_OK;
148 }
149
150 @Override
151 public void setStatus(int sc) {
152 super.setStatus(sc);
153 this.status = sc;
154 }
155
156 @Override
157 public void setStatus(int sc, String sm) {
158 super.setStatus(sc, sm);
159 this.status = sc;
160 }
161
162 @Override
163 public void sendRedirect(String location) throws IOException {
164 super.sendRedirect(location);
165 this.status = SC_MOVED_TEMPORARILY;
166 }
167
168 @Override
169 public void sendError(int sc) throws IOException {
170 super.sendError(sc);
171 this.status = sc;
172 }
173
174 @Override
175 public void sendError(int sc, String msg) throws IOException {
176 super.sendError(sc, msg);
177 this.status = sc;
178 }
179 }
180 }