#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
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static int n = 0;
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static int
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ct_event_cb(enum nf_conntrack_msg_type type,struct nf_conntrack *ct, void *data)
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{
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char buf[1024];
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nfct_snprintf(buf, sizeof(buf), ct, type, NFCT_O_PLAIN, NFCT_OF_TIME);
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printf("[CT] %s\n", buf);
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if (++n == 20)
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return NFCT_CB_STOP;
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return NFCT_CB_CONTINUE;
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}
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static int
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exp_event_cb(enum nf_conntrack_msg_type type,struct nf_expect *exp, void *data)
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{
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char buf[1024];
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nfexp_snprintf(buf, 1024, exp, type, NFCT_O_DEFAULT, 0);
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printf("[EXP] %s\n", buf);
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if (++n == 20)
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return NFCT_CB_STOP;
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return NFCT_CB_CONTINUE;
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}
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int main(void)
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{
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int ret = 0;
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struct nfct_handle *h;
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h = nfct_open(NFNL_SUBSYS_NONE, NF_NETLINK_CONNTRACK_EXP_NEW |
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NF_NETLINK_CONNTRACK_EXP_UPDATE |
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NF_NETLINK_CONNTRACK_EXP_DESTROY |
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NF_NETLINK_CONNTRACK_NEW |
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NF_NETLINK_CONNTRACK_UPDATE |
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NF_NETLINK_CONNTRACK_DESTROY);
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if (h == NULL) {
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perror("nfct_open");
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return -1;
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}
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nfexp_callback_register(h, NFCT_T_ALL, exp_event_cb, NULL);
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nfct_callback_register(h, NFCT_T_ALL, ct_event_cb, NULL);
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printf("TEST: waiting for 20 expectation events...\n");
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/* we may use nfexp_catch() instead, it would also work. */
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ret = nfct_catch(h);
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printf("TEST: expectation events ");
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if (ret == -1)
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printf("(%d)(%s)\n", ret, strerror(errno));
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else
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printf("(OK)\n");
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nfct_close(h);
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ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
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}
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