diff options
author | dtucker@openbsd.org <dtucker@openbsd.org> | 2021-01-09 11:58:50 +0000 |
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committer | Darren Tucker <dtucker@dtucker.net> | 2021-01-11 15:04:12 +1100 |
commit | d9a2bc71693ea27461a78110005d5a2d8b0c6a50 (patch) | |
tree | e7250f6901159f3b137939e56d2b7bed089e61c0 /addr.h | |
parent | b744914fcb76d70761f1b667de95841b3fc80a56 (diff) | |
download | openssh-git-d9a2bc71693ea27461a78110005d5a2d8b0c6a50.tar.gz |
upstream: Move address handling functions out into their own file
in order to reuse them for per-source maxstartups limiting. Supplement with
some additional functions from djm's flowtools that we'll also need. ok djm@
(as part of a larger diff).
OpenBSD-Commit-ID: e3e7d9ccc6c9b82e25cfef0ec83598e8e2327cbf
Diffstat (limited to 'addr.h')
-rw-r--r-- | addr.h | 60 |
1 files changed, 60 insertions, 0 deletions
@@ -0,0 +1,60 @@ +/* + * Copyright (c) 2004,2005 Damien Miller <djm@mindrot.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* Address handling routines */ + +#ifndef _ADDR_H +#define _ADDR_H + +#include <sys/socket.h> +#include <netinet/in.h> + +struct xaddr { + sa_family_t af; + union { + struct in_addr v4; + struct in6_addr v6; + u_int8_t addr8[16]; + u_int16_t addr16[8]; + u_int32_t addr32[4]; + } xa; /* 128-bit address */ + u_int32_t scope_id; /* iface scope id for v6 */ +#define v4 xa.v4 +#define v6 xa.v6 +#define addr8 xa.addr8 +#define addr16 xa.addr16 +#define addr32 xa.addr32 +}; + +int addr_unicast_masklen(int af); +int addr_xaddr_to_sa(const struct xaddr *xa, struct sockaddr *sa, + socklen_t *len, u_int16_t port); +int addr_sa_to_xaddr(struct sockaddr *sa, socklen_t slen, struct xaddr *xa); +int addr_netmask(int af, u_int l, struct xaddr *n); +int addr_hostmask(int af, u_int l, struct xaddr *n); +int addr_invert(struct xaddr *n); +int addr_pton(const char *p, struct xaddr *n); +int addr_sa_pton(const char *h, const char *s, struct sockaddr *sa, + socklen_t slen); +int addr_pton_cidr(const char *p, struct xaddr *n, u_int *l); +int addr_ntop(const struct xaddr *n, char *p, size_t len); +int addr_and(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b); +int addr_cmp(const struct xaddr *a, const struct xaddr *b); +int addr_is_all0s(const struct xaddr *n); +int addr_host_is_all0s(const struct xaddr *n, u_int masklen); +int addr_netmatch(const struct xaddr *host, const struct xaddr *net, + u_int masklen); +#endif /* _ADDR_H */ |