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-rw-r--r--proto/rip/auth.c15
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;