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Set/delete functionality in BSD routing table.

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This commit is contained in:
Adam Ierymenko 2014-07-17 17:17:59 -07:00
parent 51766e6549
commit 1189f4a568
3 changed files with 142 additions and 17 deletions
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51
node/RoutingTable.hpp
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@ -45,16 +45,43 @@ public:
class Entry
{
public:
Entry() { device[0] = (char)0; }
Entry() throw() { device[0] = (char)0; }
/**
* Destination IP and netmask bits (CIDR format)
*/
InetAddress destination;
InetAddress gateway; // port/netmaskBits field not used, should be 0 -- null if direct-to-device route
char device[128];
int deviceIndex; // may not always be set, depending on OS -- for internal use only
int metric; // higher = lower priority -- on some OSes this is "hop count," etc.
/**
* Gateway or null address if direct link-level route, netmask/port part of InetAddress not used
*/
InetAddress gateway;
/**
* System device index or ID (not included in comparison operators, may not be set on all platforms)
*/
int deviceIndex;
/**
* Metric or hop count -- higher = lower routing priority
*/
int metric;
/**
* System device name
*/
char device[128];
/**
* @return Human-readable representation of this route
*/
std::string toString() const;
/**
* @return True if at least one required field is present (object is not null)
*/
inline operator bool() const { return ((destination)||(gateway)||(device[0])); }
bool operator==(const Entry &re) const;
inline bool operator!=(const Entry &re) const { return (!(*this == re)); }
bool operator<(const Entry &re) const;
@ -73,15 +100,21 @@ public:
* @param includeLoopback Include loopback (default: false)
* @return Sorted routing table entries
*/
virtual std::vector<Entry> get(bool includeLinkLocal = false,bool includeLoopback = false) const = 0;
virtual std::vector<RoutingTable::Entry> get(bool includeLinkLocal = false,bool includeLoopback = false) const = 0;
/**
* Add or update a routing table entry
*
* @param re Entry to add/update
* @return True if change successful (or unchanged)
* If there is no change, the existing entry is returned. Use a value of -1
* for metric to delete a route.
*
* @param destination Destination IP/netmask
* @param gateway Gateway IP (netmask/port part unused) or NULL/zero for device-level route
* @param device Device name (can be null for gateway routes)
* @param metric Route metric or hop count (higher = lower priority) or negative to delete
* @return Entry or null entry on failure (or delete)
*/
virtual bool set(const Entry &re) = 0;
virtual RoutingTable::Entry set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric) = 0;
/**
* Compute a 64-bit value that hashes the current state of the network environment