UPD: copy the login page from old software

[gigi.git] / src / org / cacert / gigi / output / Form.java

diff --git a/src/org/cacert/gigi/output/Form.java b/src/org/cacert/gigi/output/Form.java
index 69fb22878e3fa6a76b8944e8c0d586c62717d870..b7caa214ca992da73bb56b34e3f868b50fb33cc3 100644 (file)
--- a/src/org/cacert/gigi/output/Form.java
+++ b/src/org/cacert/gigi/output/Form.java
@@ -1,51 +1,103 @@
 package org.cacert.gigi.output;
 
+import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.Map;
 
 import javax.servlet.ServletRequest;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
 
-import org.cacert.gigi.Language;
+import org.cacert.gigi.GigiApiException;
+import org.cacert.gigi.localisation.Language;
 import org.cacert.gigi.pages.Page;
 import org.cacert.gigi.util.RandomToken;
 
 public abstract class Form implements Outputable {
-       String csrf;
-       public Form() {
-               csrf = RandomToken.generateToken(32);
-       }
-
-       public abstract boolean submit(PrintWriter out, HttpServletRequest req);
-       @Override
-       public final void output(PrintWriter out, Language l,
-                       Map<String, Object> vars) {
-               out.println("<form method='POST' autocomplete='off'>");
-               outputContent(out, l, vars);
-               out.print("<input type='csrf' value='");
-               out.print(getCSRFToken());
-               out.println("'></form>");
-       }
-
-       protected abstract void outputContent(PrintWriter out, Language l,
-                       Map<String, Object> vars);
-
-       protected void outputError(PrintWriter out, ServletRequest req, String text) {
-               out.print("<div>");
-               out.print(Page.translate(req, text));
-               out.println("</div>");
-       }
-
-       protected String getCSRFToken() {
-               return csrf;
-       }
-       protected void checkCSRF(HttpServletRequest req) {
-               if (!csrf.equals(req.getParameter("csrf"))) {
-                       throw new CSRFError();
-               }
-       }
-
-       public class CSRFError extends Error {
-
-       }
+
+    public static final String CSRF_FIELD = "csrf";
+
+    private String csrf;
+
+    public Form(HttpServletRequest hsr) {
+        csrf = RandomToken.generateToken(32);
+        HttpSession hs = hsr.getSession();
+        hs.setAttribute("form/" + getClass().getName() + "/" + csrf, this);
+
+    }
+
+    public abstract boolean submit(PrintWriter out, HttpServletRequest req) throws GigiApiException;
+
+    protected String getCsrfFieldName() {
+        return CSRF_FIELD;
+    }
+
+    @Override
+    public void output(PrintWriter out, Language l, Map<String, Object> vars) {
+        out.println("<form method='POST'>");
+        failed = false;
+        outputContent(out, l, vars);
+        out.print("<input type='hidden' name='" + CSRF_FIELD + "' value='");
+        out.print(getCSRFToken());
+        out.println("'></form>");
+    }
+
+    protected abstract void outputContent(PrintWriter out, Language l, Map<String, Object> vars);
+
+    boolean failed;
+
+    protected void outputError(PrintWriter out, ServletRequest req, String text, Object... contents) {
+        if ( !failed) {
+            failed = true;
+            out.println("<div class='formError'>");
+        }
+        out.print("<div>");
+        if (contents.length == 0) {
+            out.print(Page.translate(req, text));
+        } else {
+            out.print(String.format(Page.translate(req, text), contents));
+        }
+        out.println("</div>");
+    }
+
+    protected void outputErrorPlain(PrintWriter out, String text) {
+        if ( !failed) {
+            failed = true;
+            out.println("<div class='formError'>");
+        }
+        out.print("<div>");
+        out.print(text);
+        out.println("</div>");
+    }
+
+    public boolean isFailed(PrintWriter out) {
+        if (failed) {
+            out.println("</div>");
+        }
+        return failed;
+    }
+
+    protected String getCSRFToken() {
+        return csrf;
+    }
+
+    public static <T extends Form> T getForm(HttpServletRequest req, Class<T> target) throws CSRFException {
+        String csrf = req.getParameter(CSRF_FIELD);
+        if (csrf == null) {
+            throw new CSRFException();
+        }
+        HttpSession hs = req.getSession();
+        if (hs == null) {
+            throw new CSRFException();
+        }
+        Form f = (Form) hs.getAttribute("form/" + target.getName() + "/" + csrf);
+        if (f == null) {
+            throw new CSRFException();
+        }
+        return (T) f;
+    }
+
+    public static class CSRFException extends IOException {
+
+    }
 }