tree ab78c0ae17740bdff1d00e8d60a2e59a4d9456bd
parent 848f1b3c5267d97460a2ad02c6dab4dc31b18df8
author Maxim Dounin <mdounin@mdounin.ru> 1507141178 +0300
committer Maxim Dounin <mdounin@mdounin.ru> 1507141178 +0300

Fixed handling of non-null-terminated unix sockets.

At least FreeBSD, macOS, NetBSD, and OpenBSD can return unix sockets
with non-null-terminated sun_path.  Additionally, the address may become
non-null-terminated if it does not fit into the buffer provided and was
truncated (may happen on macOS, NetBSD, and Solaris, which allow unix socket
addresess larger than struct sockaddr_un).  As such, ngx_sock_ntop() might
overread the sockaddr provided, as it used "%s" format and thus assumed
null-terminated string.

To fix this, the ngx_strnlen() function was introduced, and it is now used
to calculate correct length of sun_path.