X-Git-Url: https://code.wpia.club/?a=blobdiff_plain;f=src%2Forg%2Fcacert%2Fgigi%2Foutput%2FForm.java;h=a4c65a488c70310b311627247e0484df22c9c362;hb=3a3adaeea6980f1bd175939f2215cd2422af8573;hp=d321fc31238f76c151c4aae5cc74991ce9c1e051;hpb=2824d1c165c501e2f3a8809044788b33b81f478a;p=gigi.git

diff --git a/src/org/cacert/gigi/output/Form.java b/src/org/cacert/gigi/output/Form.java
index d321fc31..a4c65a48 100644
--- a/src/org/cacert/gigi/output/Form.java
+++ b/src/org/cacert/gigi/output/Form.java
@@ -1,52 +1,102 @@
 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.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 static final String CSRF_FIELD = "csrf";
 
-	public abstract boolean submit(PrintWriter out, HttpServletRequest req);
+    String csrf;
 
-	@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>");
-	}
+    public Form(HttpServletRequest hsr) {
+        csrf = RandomToken.generateToken(32);
+        HttpSession hs = hsr.getSession();
+        hs.setAttribute("form/" + getClass().getName() + "/" + csrf, this);
 
-	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>");
-	}
+    public abstract boolean submit(PrintWriter out, HttpServletRequest req);
 
-	protected String getCSRFToken() {
-		return csrf;
-	}
+    protected String getCsrfFieldName() {
+        return CSRF_FIELD;
+    }
 
-	protected void checkCSRF(HttpServletRequest req) {
-		if (!csrf.equals(req.getParameter("csrf"))) {
-			throw new CSRFError();
-		}
-	}
+    @Override
+    public void output(PrintWriter out, Language l, Map<String, Object> vars) {
+        out.println("<form method='POST' autocomplete='off'>");
+        failed = false;
+        outputContent(out, l, vars);
+        out.print("<input type='hidden' name='" + CSRF_FIELD + "' value='");
+        out.print(getCSRFToken());
+        out.println("'></form>");
+    }
 
-	public class CSRFError extends Error {
+    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 {
+
+    }
 }