Adds support to urlDecodeUni transformation

src/actions/transformations/transformation.cc

@@ -105,7 +105,7 @@ Transformation* Transformation::instantiate(std::string a) {
     IF_MATCH(trim_left) { return new TrimLeft(a); }
     IF_MATCH(trim_right) { return new TrimRight(a); }
     IF_MATCH(url_decode) { return new UrlDecode(a); }
-    IF_MATCH(url_decode_uni) { return new UrlDecodeUni(a); }
+    IF_MATCH(urlDecodeUni) { return new UrlDecodeUni(a); }
     IF_MATCH(url_encode) { return new UrlEncode(a); }
     IF_MATCH(utf8_to_unicode) { return new Utf8Unicode(a); }
 

src/actions/transformations/url_decode_uni.cc

@@ -15,6 +15,8 @@
 
 #include "actions/transformations/url_decode_uni.h"
 
+#include <string.h>
+
 #include <iostream>
 #include <string>
 #include <algorithm>
@@ -24,26 +26,28 @@
 
 #include "modsecurity/assay.h"
 #include "actions/transformations/transformation.h"
+#include "src/utils.h"
 
 
 namespace ModSecurity {
 namespace actions {
 namespace transformations {
 
-UrlDecodeUni::UrlDecodeUni(std::string action)
-    : Transformation(action) {
-    this->action_kind = 1;
-}
 
 std::string UrlDecodeUni::evaluate(std::string value,
     Assay *assay) {
-    /**
-     * @todo Implement the transformation UrlDecodeUni
-     */
-    assay->debug(4, "Transformation UrlDecodeUni is not implemented yet.");
-    return value;
+    int changed = 0;
+    char *tmp = strdup(value.c_str());
+    int res = urldecode_uni_nonstrict_inplace_ex(assay, (unsigned char *)tmp,
+        value.size(), &changed);
+    std::string ret("");
+    ret.assign(tmp);
+    free(tmp);
+
+    return ret;
 }
 
+
 }  // namespace transformations
 }  // namespace actions
 }  // namespace ModSecurity

src/actions/transformations/url_decode_uni.h

@@ -30,7 +30,9 @@ namespace transformations {
 
 class UrlDecodeUni : public Transformation {
  public:
-    explicit UrlDecodeUni(std::string action);
+    explicit UrlDecodeUni(std::string action)
+        : Transformation(action) { }
+
     std::string evaluate(std::string exp,
         Assay *assay) override;
 };