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10 sequential reads of SSL should only cause us to bomb out if all re… #3187

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10 sequential reads of SSL should only cause us to bomb out if all re… #3187

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10 sequential reads of SSL should only cause us to bomb out if all re…
davehorton Jul 19, 2024
fc2aba6
fix prev commit
davehorton Jul 19, 2024
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6 changes: 4 additions & 2 deletions lib/roles/ws/ops-ws.c
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Original file line number Diff line number Diff line change
Expand Up @@ -942,14 +942,15 @@ lws_is_ws_with_ext(struct lws *wsi)
#endif
}

#define SANITY_READS (10)
static int
rops_handle_POLLIN_ws(struct lws_context_per_thread *pt, struct lws *wsi,
struct lws_pollfd *pollfd)
{
unsigned int pending = 0;
struct lws_tokens ebuf;
char buffered = 0;
int n = 0, m, sanity = 10;
int n = 0, m, sanity = SANITY_READS, zero_len_reads = 0;
#if defined(LWS_WITH_HTTP2)
struct lws *wsi1;
#endif
Expand Down Expand Up @@ -1193,6 +1194,7 @@ rops_handle_POLLIN_ws(struct lws_context_per_thread *pt, struct lws *wsi,
/* we closed wsi */
return LWS_HPI_RET_WSI_ALREADY_DIED;
}
if (n == 0) zero_len_reads++;
//lws_buflist_describe(&wsi->buflist, wsi, __func__);
//lwsl_notice("%s: consuming %d / %d\n", __func__, n, ebuf.len);
if (ebuf.len < 0 ||
Expand Down Expand Up @@ -1246,7 +1248,7 @@ rops_handle_POLLIN_ws(struct lws_context_per_thread *pt, struct lws *wsi,
* Something has gone wrong, we are spinning...
* let's bail on this connection
*/
return LWS_HPI_RET_PLEASE_CLOSE_ME;
return zero_len_reads == SANITY_READS ? LWS_HPI_RET_PLEASE_CLOSE_ME : LWS_HPI_RET_HANDLED;
}

if (buffered && /* were draining, now nothing left */
Expand Down