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r6692: used idr_get_new_random() in the nbt client library

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Andrew Tridgell 2005-05-10 01:59:33 +00:00 committed by Gerald (Jerry) Carter
parent a0fa871c3f
commit a3f64357af
1 changed files with 4 additions and 13 deletions
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17
source/libcli/nbt/nbtsocket.c
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@ -367,19 +367,10 @@ struct nbt_name_request *nbt_name_request_send(struct nbt_name_socket *nbtsock,
/* we select a random transaction id unless the user supplied one */
if (request->name_trn_id == 0) {
request->name_trn_id = generate_random() % UINT16_MAX;
}
/* choose the next available transaction id >= the one asked for.
The strange 2nd call is to try to make the ids less guessable
and less likely to collide. It's not possible to make NBT secure
to ID guessing, but this at least makes accidential collisions
less likely */
id = idr_get_new_above(req->nbtsock->idr, req,
request->name_trn_id, UINT16_MAX);
if (id == -1) {
id = idr_get_new_above(req->nbtsock->idr, req,
1+(generate_random()%(UINT16_MAX/2)),
id = idr_get_new_random(req->nbtsock->idr, req, UINT16_MAX);
} else {
if (idr_find(req->nbtsock->idr, request->name_trn_id)) goto failed;
id = idr_get_new_above(req->nbtsock->idr, req, request->name_trn_id,
UINT16_MAX);
}
if (id == -1) goto failed;