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net: safeguard network protocol

This commit is contained in:
Thomas Schoebel-Theuer 2014-12-05 23:48:49 +01:00
parent 039858ae30
commit 4f2b48b0a5
1 changed files with 7 additions and 0 deletions
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7
kernel/mars_net.c
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@ -781,6 +781,7 @@ void make_recver_cache(struct mars_desc_cache *mc, const struct meta *meta)
{
int i;
mc->cache_recver_cookie = (u64)meta;
_make_recver_cache(mc, meta, 0, "");
for (i = 0; i < mc->cache_items; i++) {
@ -1018,6 +1019,12 @@ int desc_recv_struct(struct mars_socket *msock, void *data, const struct meta *m
msock->s_desc_recv[cache_index] = mc;
} else if (unlikely(header.h_meta_len > 0)) {
MARS_WRN("#%d called from line %d has %d unexpected meta bytes\n", msock->s_debug_nr, line, header.h_meta_len);
status = -EMSGSIZE;
goto err;
} else if (unlikely(mc->cache_recver_cookie != (u64)meta)) {
MARS_ERR("#%d protocol error %p != %p\n", msock->s_debug_nr, meta, (void*)mc->cache_recver_cookie);
status = -EPROTO;
goto err;
}
for (index = 0; index < mc->cache_items; index++) {