Fix GH-13860: Incorrect PHP_STREAM_OPTION_CHECK_LIVENESS case in ext/openssl/xp_ssl.c - causing use of dead socket #13895
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…xt/openssl/xp_ssl.c - causing use of dead socket php_socket_errno() may return a stale value when recv returns a value >= 0. As such, the liveness check is wrong. This is the same bug as #70198 (fixed in phpGH-1456). So we fix it in the same way.
bukka
approved these changes
Apr 7, 2024
| int err; | ||
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| ret = recv(sslsock->s.socket, &buf, sizeof(buf), MSG_PEEK|MSG_DONTWAIT); | ||
| err = php_socket_errno(); |
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not sure if we need to always call it (e.g. when ret is positive) but it's not a big deal as it's just errno assignment on non Win or quick WSAGetLastError call on Win. I see you took it from xp_socket so it's fine to leave as it is.
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Yeah it probably doesn't matter too much in practice... I'll make a follow-up for master that changes this in xp_ssl and xp_socket, and we can see from there.
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php_socket_errno() may return a stale value when recv returns a value >= 0. As such, the liveness check is wrong.
This is the same bug as #70198 (fixed in GH-1456). So we fix it in the same way.