Add missing operators to address classes (#275)

* * add or-operator and a simlple unit test for hw_address, ip_address, ipv6_address
* add not-operator and a simlple unit test for hw_address, ip_address, ipv6_address
* add greater-then-operator and a simlple unit test for ipv6_address
* add new constructor and a simlple unit test for network_interface, which use a ipv6_address to find the nic
* add override the function gateway_from_ip for ipv6_address parameter (untested)

* change the ipv6_address in NotMaskAdress_Test, so that the expceted addresses are valid for the winsock api

* Delete CMakeLists.txt.user

* * add  <=, >, >= operator for HWAddress with tests

* add  <=, >, >= operator for IPv4Address with tests
* add  <=,>= operator for IPv6Address with tests

* refactoring the  & , |, ~ operator of ipv6_address to "regular" operator

src/hw_address.cpp

@@ -113,5 +113,10 @@ bool hw_address_lt_compare(const uint8_t* start1, const uint8_t* end1,
     return lexicographical_compare(start1, end1, start2, end2);
 }
 
+bool hw_address_gt_compare(const uint8_t* start1, const uint8_t* end1,
+                           const uint8_t* start2, const uint8_t* end2) {
+    return lexicographical_compare(start2, end2, start1, end1);
+}
+
 } // Internals
 } // Tins

src/ip_address.cpp

@@ -153,4 +153,12 @@ IPv4Address IPv4Address::operator&(const IPv4Address& mask) const {
     return IPv4Address(Endian::be_to_host(ip_addr_ & mask.ip_addr_));
 }
 
+IPv4Address IPv4Address::operator|(const IPv4Address& mask) const {
+    return IPv4Address(Endian::be_to_host(ip_addr_ | mask.ip_addr_));
+}
+
+IPv4Address IPv4Address::operator~() const {
+    return IPv4Address(Endian::be_to_host(~ip_addr_));
+}
+
 } // Tins

src/ipv6_address.cpp

@@ -142,13 +142,33 @@ ostream& operator<<(ostream& os, const IPv6Address& addr) {
     return os << addr.to_string();
 }
 
-IPv6Address operator&(const IPv6Address& lhs, const IPv6Address& rhs) {
-    IPv6Address output = lhs;
-    IPv6Address::iterator addr_iter = output.begin();
+IPv6Address IPv6Address::operator&(const IPv6Address& rhs) const {
+    IPv6Address result = *this;
+    IPv6Address::iterator addr_iter = result.begin();
     for (IPv6Address::const_iterator it = rhs.begin(); it != rhs.end(); ++it, ++addr_iter) {
         *addr_iter = *addr_iter & *it;
     }
-    return output;
+
+    return result;
+}
+
+IPv6Address IPv6Address::operator|(const IPv6Address& rhs) const {
+     IPv6Address result = *this;
+    IPv6Address::iterator addr_iter = result.begin();
+    for (IPv6Address::const_iterator it = rhs.begin(); it != rhs.end(); ++it, ++addr_iter) {
+        *addr_iter = *addr_iter | *it;
+    }
+
+    return result;
+}
+
+IPv6Address IPv6Address::operator~() const {
+    IPv6Address result  = *this;
+    for (IPv6Address::iterator addr_iter = result.begin(); addr_iter != result.end(); ++addr_iter) {
+        *addr_iter = ~*addr_iter;
+    }
+
+   return result;
 }
 
 } // Tins

src/network_interface.cpp

@@ -257,6 +257,35 @@ NetworkInterface::NetworkInterface(IPv4Address ip)
     }
 }
 
+NetworkInterface::NetworkInterface(IPv6Address ipv6)
+: iface_id_(0) {
+    typedef vector<Utils::Route6Entry> entries_type;
+
+    if (ipv6 == "::1") {
+        #if defined(BSD) || defined(__FreeBSD_kernel__)
+        iface_id_ = resolve_index("lo0");
+        #else
+        iface_id_ = resolve_index("lo");
+        #endif
+    }
+    else {
+        const Utils::Route6Entry* best_match = 0;
+        entries_type entries;
+        Utils::route6_entries(std::back_inserter(entries));
+        for (entries_type::const_iterator it(entries.begin()); it != entries.end(); ++it) {
+            if ((ipv6 & it->mask) == it->destination) {
+                if (!best_match || it->mask > best_match->mask || it->metric < best_match->metric) {
+                    best_match = &*it;
+                }
+            }
+        }
+        if (!best_match) {
+            throw invalid_interface();
+        }
+        iface_id_ = resolve_index(best_match->interface.c_str());
+    }
+}
+
 string NetworkInterface::name() const {
     #ifndef _WIN32
     char iface_name[IF_NAMESIZE];

src/utils/routing_utils.cpp

@@ -439,5 +439,17 @@ bool gateway_from_ip(IPv4Address ip, IPv4Address& gw_addr) {
     return false;
 }
 
+bool gateway_from_ip(IPv6Address ip, IPv6Address& gw_addr) {
+    typedef vector<Route6Entry> entries_type;
+    entries_type entries =route6_entries();
+    for (entries_type::const_iterator it(entries.begin()); it != entries.end(); ++it) {
+        if ((ip & it->mask) == it->destination) {
+            gw_addr = it->gateway;
+            return true;
+        }
+    }
+    return false;
+}
+
 } // Utils
 } // Tins