623 lines
13 KiB
C
623 lines
13 KiB
C
/* $NetBSD: ip_proxy.c,v 1.36 2002/09/19 08:12:54 martti Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1997-2002 by Darren Reed.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*/
|
|
#if defined(__FreeBSD__) && defined(KERNEL) && !defined(_KERNEL)
|
|
# define _KERNEL
|
|
#endif
|
|
|
|
#ifdef __sgi
|
|
# include <sys/ptimers.h>
|
|
#endif
|
|
#include <sys/errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/file.h>
|
|
#if !defined(__FreeBSD_version)
|
|
# include <sys/ioctl.h>
|
|
#endif
|
|
#include <sys/fcntl.h>
|
|
#if !defined(_KERNEL) && !defined(KERNEL)
|
|
# include <stdio.h>
|
|
# include <string.h>
|
|
# include <stdlib.h>
|
|
#endif
|
|
#ifndef linux
|
|
# include <sys/protosw.h>
|
|
#endif
|
|
#include <sys/socket.h>
|
|
#if defined(_KERNEL)
|
|
# if !defined(linux)
|
|
# include <sys/systm.h>
|
|
# else
|
|
# include <linux/string.h>
|
|
# endif
|
|
#endif
|
|
#if !defined(__SVR4) && !defined(__svr4__)
|
|
# ifndef linux
|
|
# include <sys/mbuf.h>
|
|
# endif
|
|
#else
|
|
# include <sys/byteorder.h>
|
|
# ifdef _KERNEL
|
|
# include <sys/dditypes.h>
|
|
# endif
|
|
# include <sys/stream.h>
|
|
# include <sys/kmem.h>
|
|
#endif
|
|
#if __FreeBSD__ > 2
|
|
# include <sys/queue.h>
|
|
#endif
|
|
#include <net/if.h>
|
|
#ifdef sun
|
|
# include <net/af.h>
|
|
#endif
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#ifndef linux
|
|
# include <netinet/ip_var.h>
|
|
#endif
|
|
#include <netinet/tcp.h>
|
|
#include <netinet/udp.h>
|
|
#include <netinet/ip_icmp.h>
|
|
#include "netinet/ip_compat.h"
|
|
#include <netinet/tcpip.h>
|
|
#include "netinet/ip_fil.h"
|
|
#include "netinet/ip_nat.h"
|
|
#include "netinet/ip_state.h"
|
|
#include "netinet/ip_proxy.h"
|
|
#if (__FreeBSD_version >= 300000)
|
|
# include <sys/malloc.h>
|
|
#endif
|
|
|
|
#if !defined(lint)
|
|
#if defined(__NetBSD__)
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: ip_proxy.c,v 1.36 2002/09/19 08:12:54 martti Exp $");
|
|
#else
|
|
static const char rcsid[] = "@(#)Id: ip_proxy.c,v 2.9.2.24 2002/08/28 12:45:51 darrenr Exp";
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(_KERNEL) && (SOLARIS || defined(__sgi))
|
|
extern KRWLOCK_T ipf_nat, ipf_state;
|
|
#endif
|
|
|
|
#ifndef MIN
|
|
#define MIN(a,b) (((a)<(b))?(a):(b))
|
|
#endif
|
|
|
|
static int appr_fixseqack __P((fr_info_t *, ip_t *, ap_session_t *, int ));
|
|
|
|
|
|
#define PROXY_DEBUG 0
|
|
|
|
#define AP_SESS_SIZE 53
|
|
|
|
#include "netinet/ip_ftp_pxy.c"
|
|
#if defined(_KERNEL)
|
|
#include "netinet/ip_rcmd_pxy.c"
|
|
#include "netinet/ip_raudio_pxy.c"
|
|
#include "netinet/ip_netbios_pxy.c"
|
|
#include "netinet/ip_h323_pxy.c"
|
|
#endif
|
|
#include "netinet/ip_ipsec_pxy.c"
|
|
|
|
ap_session_t *ap_sess_tab[AP_SESS_SIZE];
|
|
ap_session_t *ap_sess_list = NULL;
|
|
aproxy_t *ap_proxylist = NULL;
|
|
aproxy_t ap_proxies[] = {
|
|
#ifdef IPF_FTP_PROXY
|
|
{ NULL, "ftp", (char)IPPROTO_TCP, 0, 0, ippr_ftp_init, NULL,
|
|
ippr_ftp_new, NULL, ippr_ftp_in, ippr_ftp_out, NULL },
|
|
#endif
|
|
#ifdef IPF_RCMD_PROXY
|
|
{ NULL, "rcmd", (char)IPPROTO_TCP, 0, 0, ippr_rcmd_init, NULL,
|
|
ippr_rcmd_new, NULL, NULL, ippr_rcmd_out, NULL },
|
|
#endif
|
|
#ifdef IPF_RAUDIO_PROXY
|
|
{ NULL, "raudio", (char)IPPROTO_TCP, 0, 0, ippr_raudio_init, NULL,
|
|
ippr_raudio_new, NULL, ippr_raudio_in, ippr_raudio_out, NULL },
|
|
#endif
|
|
#ifdef IPF_IPSEC_PROXY
|
|
{ NULL, "ipsec", (char)IPPROTO_UDP, 0, 0, ippr_ipsec_init, NULL,
|
|
ippr_ipsec_new, ippr_ipsec_del, NULL, ippr_ipsec_out,
|
|
ippr_ipsec_match },
|
|
#endif
|
|
#ifdef IPF_NETBIOS_PROXY
|
|
{ NULL, "netbios", (char)IPPROTO_UDP, 0, 0, ippr_netbios_init, NULL,
|
|
NULL, NULL, NULL, ippr_netbios_out, NULL },
|
|
#endif
|
|
#ifdef IPF_H323_PROXY
|
|
{ NULL, "h323", (char)IPPROTO_TCP, 0, 0, ippr_h323_init, NULL,
|
|
ippr_h323_new, ippr_h323_del, ippr_h323_in, ippr_h323_out, NULL },
|
|
{ NULL, "h245", (char)IPPROTO_TCP, 0, 0, ippr_h245_init, NULL,
|
|
ippr_h245_new, NULL, NULL, ippr_h245_out, NULL },
|
|
#endif
|
|
{ NULL, "", '\0', 0, 0, NULL, NULL, NULL }
|
|
};
|
|
|
|
|
|
/*
|
|
* Dynamically add a new kernel proxy. Ensure that it is unique in the
|
|
* collection compiled in and dynamically added.
|
|
*/
|
|
int appr_add(ap)
|
|
aproxy_t *ap;
|
|
{
|
|
aproxy_t *a;
|
|
|
|
for (a = ap_proxies; a->apr_p; a++)
|
|
if ((a->apr_p == ap->apr_p) &&
|
|
!strncmp(a->apr_label, ap->apr_label,
|
|
sizeof(ap->apr_label)))
|
|
return -1;
|
|
|
|
for (a = ap_proxylist; a && a->apr_p; a = a->apr_next)
|
|
if ((a->apr_p == ap->apr_p) &&
|
|
!strncmp(a->apr_label, ap->apr_label,
|
|
sizeof(ap->apr_label)))
|
|
return -1;
|
|
ap->apr_next = ap_proxylist;
|
|
ap_proxylist = ap;
|
|
return (*ap->apr_init)();
|
|
}
|
|
|
|
|
|
/*
|
|
* Delete a proxy that has been added dynamically from those available.
|
|
* If it is in use, return 1 (do not destroy NOW), not in use 0 or -1
|
|
* if it cannot be matched.
|
|
*/
|
|
int appr_del(ap)
|
|
aproxy_t *ap;
|
|
{
|
|
aproxy_t *a, **app;
|
|
|
|
for (app = &ap_proxylist; (a = *app); app = &a->apr_next)
|
|
if (a == ap) {
|
|
a->apr_flags |= APR_DELETE;
|
|
*app = a->apr_next;
|
|
if (ap->apr_ref != 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Return 1 if the packet is a good match against a proxy, else 0.
|
|
*/
|
|
int appr_ok(ip, tcp, nat)
|
|
ip_t *ip;
|
|
tcphdr_t *tcp;
|
|
ipnat_t *nat;
|
|
{
|
|
aproxy_t *apr = nat->in_apr;
|
|
u_short dport = nat->in_dport;
|
|
|
|
if ((apr == NULL) || (apr->apr_flags & APR_DELETE) ||
|
|
(ip->ip_p != apr->apr_p))
|
|
return 0;
|
|
if (((tcp != NULL) && (tcp->th_dport != dport)) || (!tcp && dport))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* If a proxy has a match function, call that to do extended packet
|
|
* matching.
|
|
*/
|
|
int appr_match(fin, nat)
|
|
fr_info_t *fin;
|
|
nat_t *nat;
|
|
{
|
|
aproxy_t *apr;
|
|
ipnat_t *ipn;
|
|
|
|
ipn = nat->nat_ptr;
|
|
if (ipn == NULL)
|
|
return -1;
|
|
apr = ipn->in_apr;
|
|
if ((apr == NULL) || (apr->apr_flags & APR_DELETE) ||
|
|
(nat->nat_aps == NULL))
|
|
return -1;
|
|
if (apr->apr_match != NULL)
|
|
if ((*apr->apr_match)(fin, nat->nat_aps, nat) != 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Allocate a new application proxy structure and fill it in with the
|
|
* relevant details. call the init function once complete, prior to
|
|
* returning.
|
|
*/
|
|
int appr_new(fin, ip, nat)
|
|
fr_info_t *fin;
|
|
ip_t *ip;
|
|
nat_t *nat;
|
|
{
|
|
register ap_session_t *aps;
|
|
aproxy_t *apr;
|
|
|
|
if ((nat->nat_ptr == NULL) || (nat->nat_aps != NULL))
|
|
return -1;
|
|
|
|
apr = nat->nat_ptr->in_apr;
|
|
|
|
if (!apr || (apr->apr_flags & APR_DELETE) || (ip->ip_p != apr->apr_p))
|
|
return -1;
|
|
|
|
KMALLOC(aps, ap_session_t *);
|
|
if (!aps)
|
|
return -1;
|
|
bzero((char *)aps, sizeof(*aps));
|
|
aps->aps_p = ip->ip_p;
|
|
aps->aps_data = NULL;
|
|
aps->aps_apr = apr;
|
|
aps->aps_psiz = 0;
|
|
if (apr->apr_new != NULL)
|
|
if ((*apr->apr_new)(fin, ip, aps, nat) == -1) {
|
|
if ((aps->aps_data != NULL) && (aps->aps_psiz != 0)) {
|
|
KFREES(aps->aps_data, aps->aps_psiz);
|
|
}
|
|
KFREE(aps);
|
|
return -1;
|
|
}
|
|
aps->aps_nat = nat;
|
|
aps->aps_next = ap_sess_list;
|
|
ap_sess_list = aps;
|
|
nat->nat_aps = aps;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* check to see if a packet should be passed through an active proxy routine
|
|
* if one has been setup for it.
|
|
*/
|
|
int appr_check(ip, fin, nat)
|
|
ip_t *ip;
|
|
fr_info_t *fin;
|
|
nat_t *nat;
|
|
{
|
|
#if SOLARIS && defined(_KERNEL) && (SOLARIS2 >= 6)
|
|
mb_t *m = fin->fin_qfm;
|
|
int dosum = 1;
|
|
#endif
|
|
tcphdr_t *tcp = NULL;
|
|
ap_session_t *aps;
|
|
aproxy_t *apr;
|
|
u_32_t sum;
|
|
short rv;
|
|
int err;
|
|
|
|
aps = nat->nat_aps;
|
|
if ((aps != NULL) && (aps->aps_p == ip->ip_p)) {
|
|
if (ip->ip_p == IPPROTO_TCP) {
|
|
tcp = (tcphdr_t *)fin->fin_dp;
|
|
/*
|
|
* verify that the checksum is correct. If not, then
|
|
* don't do anything with this packet.
|
|
*/
|
|
#if SOLARIS && defined(_KERNEL) && (SOLARIS2 >= 6)
|
|
if (dohwcksum && (m->b_ick_flag == ICK_VALID)) {
|
|
sum = tcp->th_sum;
|
|
dosum = 0;
|
|
}
|
|
if (dosum)
|
|
sum = fr_tcpsum(fin->fin_qfm, ip, tcp);
|
|
#else
|
|
sum = fr_tcpsum(*(mb_t **)fin->fin_mp, ip, tcp);
|
|
#endif
|
|
if (sum != tcp->th_sum) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy tcp checksum failure\n");
|
|
#endif
|
|
frstats[fin->fin_out].fr_tcpbad++;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Don't both the proxy with these...or in fact, should
|
|
* we free up proxy stuff when seen?
|
|
*/
|
|
if ((tcp->th_flags & TH_RST) != 0)
|
|
return 0;
|
|
}
|
|
|
|
apr = aps->aps_apr;
|
|
err = 0;
|
|
if (fin->fin_out != 0) {
|
|
if (apr->apr_outpkt != NULL)
|
|
err = (*apr->apr_outpkt)(fin, ip, aps, nat);
|
|
} else {
|
|
if (apr->apr_inpkt != NULL)
|
|
err = (*apr->apr_inpkt)(fin, ip, aps, nat);
|
|
}
|
|
|
|
rv = APR_EXIT(err);
|
|
if (rv == 1) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy says bad packet received\n");
|
|
#endif
|
|
return -1;
|
|
}
|
|
if (rv == 2) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy says free app proxy data\n");
|
|
#endif
|
|
appr_free(apr);
|
|
nat->nat_aps = NULL;
|
|
return -1;
|
|
}
|
|
|
|
if (tcp != NULL) {
|
|
err = appr_fixseqack(fin, ip, aps, APR_INC(err));
|
|
#if SOLARIS && defined(_KERNEL) && (SOLARIS2 >= 6)
|
|
if (dosum)
|
|
tcp->th_sum = fr_tcpsum(fin->fin_qfm, ip, tcp);
|
|
#else
|
|
tcp->th_sum = fr_tcpsum(*(mb_t **)fin->fin_mp, ip, tcp);
|
|
#endif
|
|
}
|
|
aps->aps_bytes += ip->ip_len;
|
|
aps->aps_pkts++;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Search for an proxy by the protocol it is being used with and its name.
|
|
*/
|
|
aproxy_t *appr_lookup(pr, name)
|
|
u_int pr;
|
|
char *name;
|
|
{
|
|
aproxy_t *ap;
|
|
|
|
for (ap = ap_proxies; ap->apr_p; ap++)
|
|
if ((ap->apr_p == pr) &&
|
|
!strncmp(name, ap->apr_label, sizeof(ap->apr_label))) {
|
|
ap->apr_ref++;
|
|
return ap;
|
|
}
|
|
|
|
for (ap = ap_proxylist; ap; ap = ap->apr_next)
|
|
if ((ap->apr_p == pr) &&
|
|
!strncmp(name, ap->apr_label, sizeof(ap->apr_label))) {
|
|
ap->apr_ref++;
|
|
return ap;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
void appr_free(ap)
|
|
aproxy_t *ap;
|
|
{
|
|
ap->apr_ref--;
|
|
}
|
|
|
|
|
|
void aps_free(aps)
|
|
ap_session_t *aps;
|
|
{
|
|
ap_session_t *a, **ap;
|
|
aproxy_t *apr;
|
|
|
|
if (!aps)
|
|
return;
|
|
|
|
for (ap = &ap_sess_list; (a = *ap); ap = &a->aps_next)
|
|
if (a == aps) {
|
|
*ap = a->aps_next;
|
|
break;
|
|
}
|
|
|
|
apr = aps->aps_apr;
|
|
if ((apr != NULL) && (apr->apr_del != NULL))
|
|
(*apr->apr_del)(aps);
|
|
|
|
if ((aps->aps_data != NULL) && (aps->aps_psiz != 0))
|
|
KFREES(aps->aps_data, aps->aps_psiz);
|
|
KFREE(aps);
|
|
}
|
|
|
|
|
|
/*
|
|
* returns 2 if ack or seq number in TCP header is changed, returns 0 otherwise
|
|
*/
|
|
static int appr_fixseqack(fin, ip, aps, inc)
|
|
fr_info_t *fin;
|
|
ip_t *ip;
|
|
ap_session_t *aps;
|
|
int inc;
|
|
{
|
|
int sel, ch = 0, out, nlen;
|
|
u_32_t seq1, seq2;
|
|
tcphdr_t *tcp;
|
|
short inc2;
|
|
|
|
tcp = (tcphdr_t *)fin->fin_dp;
|
|
out = fin->fin_out;
|
|
/*
|
|
* ip_len has already been adjusted by 'inc'.
|
|
*/
|
|
nlen = ip->ip_len;
|
|
nlen -= (ip->ip_hl << 2) + (tcp->th_off << 2);
|
|
|
|
inc2 = inc;
|
|
inc = (int)inc2;
|
|
|
|
if (out != 0) {
|
|
seq1 = (u_32_t)ntohl(tcp->th_seq);
|
|
sel = aps->aps_sel[out];
|
|
|
|
/* switch to other set ? */
|
|
if ((aps->aps_seqmin[!sel] > aps->aps_seqmin[sel]) &&
|
|
(seq1 > aps->aps_seqmin[!sel])) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy out switch set seq %d -> %d %x > %x\n",
|
|
sel, !sel, seq1, aps->aps_seqmin[!sel]);
|
|
#endif
|
|
sel = aps->aps_sel[out] = !sel;
|
|
}
|
|
|
|
if (aps->aps_seqoff[sel]) {
|
|
seq2 = aps->aps_seqmin[sel] - aps->aps_seqoff[sel];
|
|
if (seq1 > seq2) {
|
|
seq2 = aps->aps_seqoff[sel];
|
|
seq1 += seq2;
|
|
tcp->th_seq = htonl(seq1);
|
|
ch = 1;
|
|
}
|
|
}
|
|
|
|
if (inc && (seq1 > aps->aps_seqmin[!sel])) {
|
|
aps->aps_seqmin[sel] = seq1 + nlen - 1;
|
|
aps->aps_seqoff[sel] = aps->aps_seqoff[sel] + inc;
|
|
#if PROXY_DEBUG
|
|
printf("proxy seq set %d at %x to %d + %d\n", sel,
|
|
aps->aps_seqmin[sel], aps->aps_seqoff[sel],
|
|
inc);
|
|
#endif
|
|
}
|
|
|
|
/***/
|
|
|
|
seq1 = ntohl(tcp->th_ack);
|
|
sel = aps->aps_sel[1 - out];
|
|
|
|
/* switch to other set ? */
|
|
if ((aps->aps_ackmin[!sel] > aps->aps_ackmin[sel]) &&
|
|
(seq1 > aps->aps_ackmin[!sel])) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy out switch set ack %d -> %d %x > %x\n",
|
|
sel, !sel, seq1, aps->aps_ackmin[!sel]);
|
|
#endif
|
|
sel = aps->aps_sel[1 - out] = !sel;
|
|
}
|
|
|
|
if (aps->aps_ackoff[sel] && (seq1 > aps->aps_ackmin[sel])) {
|
|
seq2 = aps->aps_ackoff[sel];
|
|
tcp->th_ack = htonl(seq1 - seq2);
|
|
ch = 1;
|
|
}
|
|
} else {
|
|
seq1 = ntohl(tcp->th_seq);
|
|
sel = aps->aps_sel[out];
|
|
|
|
/* switch to other set ? */
|
|
if ((aps->aps_ackmin[!sel] > aps->aps_ackmin[sel]) &&
|
|
(seq1 > aps->aps_ackmin[!sel])) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy in switch set ack %d -> %d %x > %x\n",
|
|
sel, !sel, seq1, aps->aps_ackmin[!sel]);
|
|
#endif
|
|
sel = aps->aps_sel[out] = !sel;
|
|
}
|
|
|
|
if (aps->aps_ackoff[sel]) {
|
|
seq2 = aps->aps_ackmin[sel] - aps->aps_ackoff[sel];
|
|
if (seq1 > seq2) {
|
|
seq2 = aps->aps_ackoff[sel];
|
|
seq1 += seq2;
|
|
tcp->th_seq = htonl(seq1);
|
|
ch = 1;
|
|
}
|
|
}
|
|
|
|
if (inc && (seq1 > aps->aps_ackmin[!sel])) {
|
|
aps->aps_ackmin[!sel] = seq1 + nlen - 1;
|
|
aps->aps_ackoff[!sel] = aps->aps_ackoff[sel] + inc;
|
|
#if PROXY_DEBUG
|
|
printf("proxy ack set %d at %x to %d + %d\n", !sel,
|
|
aps->aps_seqmin[!sel], aps->aps_seqoff[sel],
|
|
inc);
|
|
#endif
|
|
}
|
|
|
|
/***/
|
|
|
|
seq1 = ntohl(tcp->th_ack);
|
|
sel = aps->aps_sel[1 - out];
|
|
|
|
/* switch to other set ? */
|
|
if ((aps->aps_seqmin[!sel] > aps->aps_seqmin[sel]) &&
|
|
(seq1 > aps->aps_seqmin[!sel])) {
|
|
#if PROXY_DEBUG
|
|
printf("proxy in switch set seq %d -> %d %x > %x\n",
|
|
sel, !sel, seq1, aps->aps_seqmin[!sel]);
|
|
#endif
|
|
sel = aps->aps_sel[1 - out] = !sel;
|
|
}
|
|
|
|
if (aps->aps_seqoff[sel] != 0) {
|
|
#if PROXY_DEBUG
|
|
printf("sel %d seqoff %d seq1 %x seqmin %x\n", sel,
|
|
aps->aps_seqoff[sel], seq1,
|
|
aps->aps_seqmin[sel]);
|
|
#endif
|
|
if (seq1 > aps->aps_seqmin[sel]) {
|
|
seq2 = aps->aps_seqoff[sel];
|
|
tcp->th_ack = htonl(seq1 - seq2);
|
|
ch = 1;
|
|
}
|
|
}
|
|
}
|
|
#if PROXY_DEBUG
|
|
printf("appr_fixseqack: seq %x ack %x\n", ntohl(tcp->th_seq),
|
|
ntohl(tcp->th_ack));
|
|
#endif
|
|
return ch ? 2 : 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Initialise hook for kernel application proxies.
|
|
* Call the initialise routine for all the compiled in kernel proxies.
|
|
*/
|
|
int appr_init()
|
|
{
|
|
aproxy_t *ap;
|
|
int err = 0;
|
|
|
|
for (ap = ap_proxies; ap->apr_p; ap++) {
|
|
err = (*ap->apr_init)();
|
|
if (err != 0)
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
|
|
/*
|
|
* Unload hook for kernel application proxies.
|
|
* Call the finialise routine for all the compiled in kernel proxies.
|
|
*/
|
|
void appr_unload()
|
|
{
|
|
aproxy_t *ap;
|
|
|
|
for (ap = ap_proxies; ap->apr_p; ap++)
|
|
if (ap->apr_fini)
|
|
(*ap->apr_fini)();
|
|
for (ap = ap_proxylist; ap; ap = ap->apr_next)
|
|
if (ap->apr_fini)
|
|
(*ap->apr_fini)();
|
|
}
|