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author | Paul Moore <paul.moore@hp.com> | 2007-12-01 12:27:18 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-01-28 22:55:19 (GMT) |
commit | 875179fa60ffe2eba1daaefb0af1be97ff5eda6a (patch) | |
tree | cc691e83f8dc2e022299362da49673fb31c2de55 /net/xfrm/xfrm_policy.c | |
parent | 9108d5f4b2cd82f55ad178caa0be66a866a06dcc (diff) | |
download | linux-fsl-qoriq-875179fa60ffe2eba1daaefb0af1be97ff5eda6a.tar.xz |
[IPSEC]: SPD auditing fix to include the netmask/prefix-length
Currently the netmask/prefix-length of an IPsec SPD entry is not included in
any of the SPD related audit messages. This can cause a problem when the
audit log is examined as the netmask/prefix-length is vital in determining
what network traffic is affected by a particular SPD entry. This patch fixes
this problem by adding two additional fields, "src_prefixlen" and
"dst_prefixlen", to the SPD audit messages to indicate the source and
destination netmasks. These new fields are only included in the audit message
when the netmask/prefix-length is less than the address length, i.e. the SPD
entry applies to a network address and not a host address.
Example audit message:
type=UNKNOWN[1415] msg=audit(1196105849.752:25): auid=0 \
subj=root:system_r:unconfined_t:s0-s0:c0.c1023 op=SPD-add res=1 \
src=192.168.0.0 src_prefixlen=24 dst=192.168.1.0 dst_prefixlen=24
In addition, this patch also fixes a few other things in the
xfrm_audit_common_policyinfo() function. The IPv4 string formatting was
converted to use the standard NIPQUAD_FMT constant, the memcpy() was removed
from the IPv6 code path and replaced with a typecast (the memcpy() was acting
as a slow, implicit typecast anyway), and two local variables were created to
make referencing the XFRM security context and selector information cleaner.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r-- | net/xfrm/xfrm_policy.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index b153f74..a76280a 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2266,29 +2266,37 @@ void __init xfrm_init(void) static inline void xfrm_audit_common_policyinfo(struct xfrm_policy *xp, struct audit_buffer *audit_buf) { - if (xp->security) + struct xfrm_sec_ctx *ctx = xp->security; + struct xfrm_selector *sel = &xp->selector; + + if (ctx) audit_log_format(audit_buf, " sec_alg=%u sec_doi=%u sec_obj=%s", - xp->security->ctx_alg, xp->security->ctx_doi, - xp->security->ctx_str); + ctx->ctx_alg, ctx->ctx_doi, ctx->ctx_str); - switch(xp->selector.family) { + switch(sel->family) { case AF_INET: - audit_log_format(audit_buf, " src=%u.%u.%u.%u dst=%u.%u.%u.%u", - NIPQUAD(xp->selector.saddr.a4), - NIPQUAD(xp->selector.daddr.a4)); + audit_log_format(audit_buf, " src=" NIPQUAD_FMT, + NIPQUAD(sel->saddr.a4)); + if (sel->prefixlen_s != 32) + audit_log_format(audit_buf, " src_prefixlen=%d", + sel->prefixlen_s); + audit_log_format(audit_buf, " dst=" NIPQUAD_FMT, + NIPQUAD(sel->daddr.a4)); + if (sel->prefixlen_d != 32) + audit_log_format(audit_buf, " dst_prefixlen=%d", + sel->prefixlen_d); break; case AF_INET6: - { - struct in6_addr saddr6, daddr6; - - memcpy(&saddr6, xp->selector.saddr.a6, - sizeof(struct in6_addr)); - memcpy(&daddr6, xp->selector.daddr.a6, - sizeof(struct in6_addr)); - audit_log_format(audit_buf, - " src=" NIP6_FMT " dst=" NIP6_FMT, - NIP6(saddr6), NIP6(daddr6)); - } + audit_log_format(audit_buf, " src=" NIP6_FMT, + NIP6(*(struct in6_addr *)sel->saddr.a6)); + if (sel->prefixlen_s != 128) + audit_log_format(audit_buf, " src_prefixlen=%d", + sel->prefixlen_s); + audit_log_format(audit_buf, " dst=" NIP6_FMT, + NIP6(*(struct in6_addr *)sel->daddr.a6)); + if (sel->prefixlen_d != 128) + audit_log_format(audit_buf, " dst_prefixlen=%d", + sel->prefixlen_d); break; } } |