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buflist: overallocate by 1

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We overallocate at the start by LWS_PRE so we can use
buflist content directly with lws_write, this has us also
overallocate by 1 at the end.  There's a corner case with
cgi where it's receiving bulk POST data to pass on to cgi
stdin and wants to make sure there's a NUL just past the
end... this makes sure we have space for it.
This commit is contained in:
Andy Green 2019-10-13 07:17:03 +01:00
parent cc425b1b98
commit 1c09e6e822
1 changed files with 2 additions and 2 deletions
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4
lib/core/buflist.c
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@ -59,8 +59,8 @@ lws_buflist_append_segment(struct lws_buflist **head, const uint8_t *buf,
lwsl_info("%s: len %u first %d %p\n", __func__, (unsigned int)len,
first, p);
nbuf = (struct lws_buflist *)lws_malloc(
sizeof(struct lws_buflist) + len + LWS_PRE, __func__);
nbuf = (struct lws_buflist *)lws_malloc(sizeof(struct lws_buflist) +
len + LWS_PRE + 1, __func__);
if (!nbuf) {
lwsl_err("%s: OOM\n", __func__);
return -1;