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nfnetlink: introduce generic netfilter subsystem decoder

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* netlink_netfilter.c: Include "nlattr.h".
(decode_netlink_netfilter): Call decode_nlattr.
This commit is contained in:
Chen Jingpiao 2018-03-11 20:14:56 +08:00 committed by Dmitry V. Levin
parent 547b90e239
commit 073d93827f
1 changed files with 9 additions and 2 deletions
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11
netlink_netfilter.c
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@ -31,6 +31,7 @@
#ifdef HAVE_LINUX_NETFILTER_NFNETLINK_H
# include "print_fields.h"
# include "nlattr.h"
# include <netinet/in.h>
# include <arpa/inet.h>
@ -80,8 +81,14 @@ decode_netlink_netfilter(struct tcb *const tcp,
const size_t offset = NLMSG_ALIGN(sizeof(nfmsg));
if (len > offset) {
tprints(", ");
printstr_ex(tcp, addr + offset,
len - offset, QUOTE_FORCE_HEX);
if ((nlmsghdr->nlmsg_type >= NFNL_MSG_BATCH_BEGIN
&& nlmsghdr->nlmsg_type <= NFNL_MSG_BATCH_END)
|| nlmsghdr->nlmsg_type < NLMSG_MIN_TYPE)
printstr_ex(tcp, addr + offset,
len - offset, QUOTE_FORCE_HEX);
else
decode_nlattr(tcp, addr + offset, len - offset,
NULL, NULL, NULL, 0, NULL);
}
}