#ifndef _RLOCS_H_
#define _RLOCS_H_

#include <json/json_object.h>
#include <netinet/in.h>

#include <openssl/rsa.h>

// For now. We can dynamically allocate later.
#define MAX_RLOCS 64
#define MAX_EID_MAPPINGS 256

struct rloc {
    short family;
    union {
        struct in_addr  ip4;
        struct in6_addr ip6;
    } addr;
    
    RSA* key;
};


struct ip4_eid_map_entry {
    struct in_addr network;
    struct in_addr broadcast;
    unsigned int mask;
    struct rloc *rloc;
};

struct ip6_eid_map_entry {
    struct in6_addr network;
    struct in6_addr broadcast;
    unsigned int mask;
    struct rloc *rloc;    
};

struct rlocs {
    json_object* config;
    
    size_t num_entries;
    struct rloc entries[MAX_RLOCS];
    
    size_t num_ip4_map_entries;
    struct ip4_eid_map_entry ip4_mappings[MAX_EID_MAPPINGS];
    
    size_t num_ip6_map_entries;
    struct ip6_eid_map_entry ip6_mappings[MAX_EID_MAPPINGS];
};


void rlocs_init(void);

struct rlocs *rlocs_new( char *filename );

struct rloc *rloc_find_for_ipv4( struct rlocs *reg, struct in_addr *eid );
struct rloc *rloc_find_for_ipv6( struct rlocs *reg, struct in6_addr *eid );
struct rloc *rloc_find_by_address( struct rlocs *reg, struct in_addr *ipv4, struct in6_addr *ipv6 );

int rloc_add_private_key( struct rloc *rloc, char *filename );

void rlocs_debug_output( struct rlocs *reg );

/* Returns -1 on error, or number of bytes written */
ssize_t rloc_encrypt( struct rloc *rloc, unsigned char *data, size_t data_len, unsigned char *dest, size_t dest_len );
ssize_t rloc_decrypt( struct rloc *rloc, unsigned char *data, size_t data_len, unsigned char *dest, size_t dest_len );

void rlocs_free( struct rlocs *registry );

#endif