Adds missing file: rules_exceptions

src/rules_exceptions.cc

@@ -0,0 +1,97 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * You may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+#include "modsecurity/rules_exceptions.h"
+
+#include <string>
+
+#include "src/utils.h"
+
+namespace modsecurity {
+
+
+bool RulesExceptions::load(const std::string &a, std::string *error) {
+    std::vector<std::string> toRemove = modsecurity::split(a, ' ');
+    for (std::string &a : toRemove) {
+        std::string b = removeBracketsIfNeeded(a);
+
+        size_t dash = b.find('-');
+        if (dash != std::string::npos) {
+            std::string n1s = std::string(b, 0, dash);
+            std::string n2s = std::string(b, dash + 1, b.size() - (dash + 1));
+            int n1n = 0;
+            int n2n = 0;
+            try {
+                n1n = std::stoi(n1s);
+            } catch (...) {
+                error->assign("Not a number: " + n1s);
+                return false;
+            }
+            try {
+                n2n = std::stoi(n2s);
+            } catch (...) {
+                error->assign("Not a number: " + n2s);
+                return false;
+            }
+
+            if (n1s > n2s) {
+                error->assign("Invalid range: " + b);
+                return false;
+            }
+            addRange(n1n, n2n);
+        } else {
+            try {
+                int num = std::stoi(b);
+                addNumber(num);
+            } catch (...) {
+                error->assign("Not a number or range: " + b);
+                return false;
+            }
+        }
+    }
+
+    return true;
+}
+
+
+bool RulesExceptions::addNumber(int a) {
+    m_numbers.push_back(a);
+}
+
+
+bool RulesExceptions::addRange(int a, int b) {
+    m_ranges.push_back(std::make_pair(a, b));
+}
+
+
+bool RulesExceptions::contains(int a) {
+    for (int z : m_numbers) {
+        if (a == z) {
+            return true;
+        }
+    }
+
+    for (auto z : m_ranges) {
+        if (z.first <= a && z.second >= a) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+}  // namespace modsecurity
+