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libipsec: Match IPsec policies against ports of processed packets

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Fixes #2252.
This commit is contained in:
Tobias Brunner
2017-03-02 08:27:21 +01:00
parent 7ae9546811
commit d8e12fdb13
1 changed files with 21 additions and 1 deletions
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src/libipsec/ipsec_policy.c
+21 -1
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@@ -101,6 +101,24 @@ METHOD(ipsec_policy_t, match, bool,
this->dst_ts->equals(this->dst_ts, dst_ts)); this->dst_ts->equals(this->dst_ts, dst_ts));
} }
/**
* Match the port of the given host against the given traffic selector.
*/
static inline bool match_port(traffic_selector_t *ts, host_t *host)
{
uint16_t from, to, port;
from = ts->get_from_port(ts);
to = ts->get_to_port(ts);
if ((from == 0 && to == 0xffff) ||
(from == 0xffff && to == 0))
{
return TRUE;
}
port = host->get_port(host);
return from <= port && port <= to;
}
METHOD(ipsec_policy_t, match_packet, bool, METHOD(ipsec_policy_t, match_packet, bool,
private_ipsec_policy_t *this, ip_packet_t *packet) private_ipsec_policy_t *this, ip_packet_t *packet)
{ {
@@ -110,7 +128,9 @@ METHOD(ipsec_policy_t, match_packet, bool,
return (!this->protocol || this->protocol == proto) && return (!this->protocol || this->protocol == proto) &&
this->src_ts->includes(this->src_ts, src) && this->src_ts->includes(this->src_ts, src) &&
this->dst_ts->includes(this->dst_ts, dst); match_port(this->src_ts, src) &&
this->dst_ts->includes(this->dst_ts, dst) &&
match_port(this->dst_ts, dst);
} }
METHOD(ipsec_policy_t, get_source_ts, traffic_selector_t*, METHOD(ipsec_policy_t, get_source_ts, traffic_selector_t*,