게시글 CSRF 취약점(16-749 16-750) 수정

js/common.js

@@ -689,4 +689,53 @@ $(function(){
             return false;
         }
     });
+});
+
+function get_write_token(bo_table)
+{
+    var token = "";
+
+    $.ajax({
+        type: "POST",
+        url: g5_bbs_url+"/write_token.php",
+        data: { bo_table: bo_table },
+        cache: false,
+        async: false,
+        dataType: "json",
+        success: function(data) {
+            if(data.error) {
+                alert(data.error);
+                if(data.url)
+                    document.location.href = data.url;
+
+                return false;
+            }
+
+            token = data.token;
+        }
+    });
+
+    return token;
+}
+
+$(function() {
+    $(document).on("click", "form[name=fwrite] input:submit", function() {
+        var f = this.form;
+        var bo_table = f.bo_table.value;
+        var token = get_write_token(bo_table);
+
+        if(!token) {
+            alert("토큰 정보가 올바르지 않습니다.");
+            return false;
+        }
+
+        var $f = $(f);
+
+        if(typeof f.token === "undefined")
+            $f.prepend('<input type="hidden" name="token" value="">');
+
+        $f.find("input[name=token]").val(token);
+
+        return true;
+    });
 });