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First pass at fragmenting

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This commit is contained in:
Nick Thomas
2013-08-09 03:11:15 +01:00
parent 1acaa03799
commit cfd1b2f957
11 changed files with 405 additions and 359 deletions
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18
pass-1/rlocs.h
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@@ -13,11 +13,15 @@
#define MAX_RLOCS 64
#define MAX_EID_MAPPINGS 256
// Just a guess, but 20-byte IP header, 16-byte IV, 16-byte tag, 16 bytes for symmetric block padding
#define DEFAULT_PATH_MTU 1500 - ( 20 + 16 + 16 + 16 )
struct key_context {
struct peer_context {
int in_use;
char secret[SHA256_DIGEST_LENGTH];
EVP_CIPHER_CTX ctx;
unsigned int path_mtu;
/* Probably don't need these
struct rloc *rloc_x;
@@ -35,6 +39,7 @@ struct rloc {
EVP_PKEY *key;
// We use this to index our rloc for shared keys
int context_id;
char presentation[128];
};
@@ -72,7 +77,7 @@ struct rlocs {
* Half of the allocated memory goes unused, but we can worry about dynamic
* allocation at the same time as MAX_RLOCS and MAX_EID_MAPPINGS
*/
struct key_context key_contexts[MAX_RLOCS][MAX_RLOCS];
struct peer_context peer_contexts[MAX_RLOCS][MAX_RLOCS];
};
@@ -84,6 +89,12 @@ 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 rlocs_find_two_ipv4(
struct rlocs *reg,
struct rloc **s_rloc_ptr, struct in_addr *s_rloc_addr,
struct rloc **d_rloc_ptr, struct in_addr *d_rloc_addr
);
int rloc_add_private_key( struct rloc *rloc, char *filename );
void rlocs_debug_output( struct rlocs *reg );
@@ -92,6 +103,9 @@ void rlocs_debug_output( struct rlocs *reg );
ssize_t rlocs_encrypt( struct rlocs *reg, struct rloc *x, struct rloc *y, unsigned char *data, size_t data_len, unsigned char *dest, size_t dest_len );
ssize_t rlocs_decrypt( struct rlocs *reg, struct rloc *x, struct rloc *y, unsigned char *data, size_t data_len, unsigned char *dest, size_t dest_len );
unsigned short rlocs_get_path_mtu( struct rlocs *reg, struct rloc *x, struct rloc *y );
void rlocs_set_path_mtu( struct rlocs *reg, struct rloc *x, struct rloc *y, unsigned short new_mtu );
void rlocs_free( struct rlocs *registry );
#endif