diff options
Diffstat (limited to 'proto/rip/auth.c')
| -rw-r--r-- | proto/rip/auth.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/proto/rip/auth.c b/proto/rip/auth.c index 4777eb5..9dd26da 100644 --- a/proto/rip/auth.c +++ b/proto/rip/auth.c @@ -26,6 +26,8 @@ #define P ((struct rip_proto *) p) #define P_CF ((struct rip_proto_config *)p->cf) +#define PACKETLEN(num) (num * sizeof(struct rip_block) + sizeof(struct rip_packet_heading)) + /* 1 == failed, 0 == ok */ int rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, struct rip_packet *packet, int num ) @@ -39,7 +41,7 @@ rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, stru return 1; } if (strncmp( (char *) (&block->packetlen), P_CF->passwords->password, 16)) { - log( L_AUTH, "Passwd authentication failed!\n" ); + log( L_AUTH "Passwd authentication failed!\n" ); return 1; } return 0; @@ -49,13 +51,18 @@ rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, stru struct password_item *head; struct rip_md5_tail *tail; - /* FIXME: check that block->packetlen looks valid */ + if (block->packetlen != PACKETLEN(num)) { + log( L_ERR "packetlen in md5 does not match computed value\n" ); + return 1; + } tail = (struct rip_md5_tail *) ((char *) packet + (block->packetlen - sizeof(struct rip_block_auth))); head = P_CF->passwords; - while (head) { /* FIXME: should not we check that password is not expired? */ + while (head) { /* FIXME: should check serial numbers, somehow */ + if ((head->from > now) || (head->to < now)) + continue; if (head->id == block->keyid) { struct MD5Context ctxt; char md5sum_packet[16]; @@ -111,7 +118,7 @@ rip_outgoing_authentication( struct proto *p, struct rip_block_auth *block, stru block->seq = sequence++; block->zero0 = 0; block->zero1 = 1; - block->packetlen = 0 /* FIXME */; + block->packetlen = PACKETLEN(num); tail = (struct rip_md5_tail *) ((char *) packet + (block->packetlen - sizeof(struct rip_block_auth))); tail->mustbeFFFF = 0xffff; |