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-rw-r--r--contrib/ipfilter/ipnat.c405
1 files changed, 169 insertions, 236 deletions
diff --git a/contrib/ipfilter/ipnat.c b/contrib/ipfilter/ipnat.c
index b8cb37ee14b3..e19edb86a75e 100644
--- a/contrib/ipfilter/ipnat.c
+++ b/contrib/ipfilter/ipnat.c
@@ -1,10 +1,13 @@
/*
- * Copyright (C) 1993-2001 by Darren Reed.
+ * Copyright (C) 1993-2002 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
*/
+#ifdef __sgi
+# include <sys/ptimers.h>
+#endif
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
@@ -39,10 +42,12 @@
#include <arpa/inet.h>
#include <resolv.h>
#include <ctype.h>
+#include <nlist.h>
#include "netinet/ip_compat.h"
#include "netinet/ip_fil.h"
-#include "netinet/ip_proxy.h"
#include "netinet/ip_nat.h"
+#include "netinet/ip_state.h"
+#include "netinet/ip_proxy.h"
#include "ipf.h"
#include "kmem.h"
@@ -55,32 +60,32 @@ extern char *sys_errlist[];
#if !defined(lint)
static const char sccsid[] ="@(#)ipnat.c 1.9 6/5/96 (C) 1993 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ipnat.c,v 2.16.2.9 2001/07/18 15:06:33 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ipnat.c,v 2.16.2.20 2002/02/22 15:32:55 darrenr Exp $";
#endif
#if SOLARIS
#define bzero(a,b) memset(a,0,b)
#endif
-#ifdef USE_INET6
int use_inet6 = 0;
-#endif
-
-static char thishost[MAXHOSTNAMELEN];
-
+char thishost[MAXHOSTNAMELEN];
extern char *optarg;
extern ipnat_t *natparse __P((char *, int));
extern void natparsefile __P((int, char *, int));
-extern void printnat __P((ipnat_t *, int, void *));
+extern void printnat __P((ipnat_t *, int));
+extern void printactivenat __P((nat_t *, int));
+extern void printhostmap __P((hostmap_t *, u_int));
+extern char *getsumd __P((u_32_t));
-void dostats __P((int, int)), flushtable __P((int, int));
+void dostats __P((natstat_t *, int)), flushtable __P((int, int));
void usage __P((char *));
int countbits __P((u_32_t));
char *getnattype __P((ipnat_t *));
int main __P((int, char*[]));
void printaps __P((ap_session_t *, int));
-char *getsumd __P((u_32_t));
+void showhostmap __P((natstat_t *nsp));
+void natstat_dead __P((natstat_t *, char *));
void usage(name)
@@ -91,27 +96,22 @@ char *name;
}
-char *getsumd(sum)
-u_32_t sum;
-{
- static char sumdbuf[17];
-
- if (sum & NAT_HW_CKSUM)
- sprintf(sumdbuf, "hw(%#0x)", sum & 0xffff);
- else
- sprintf(sumdbuf, "%#0x", sum);
- return sumdbuf;
-}
-
-
int main(argc, argv)
int argc;
char *argv[];
{
- int fd = -1, opts = 0, c, mode = O_RDWR;
- char *file = NULL, *core = NULL;
+ natstat_t ns, *nsp = &ns;
+ char *file, *core, *kernel;
+ int fd, opts, c, mode;
+
+ fd = -1;
+ opts = 0;
+ file = NULL;
+ core = NULL;
+ kernel = NULL;
+ mode = O_RDWR;
- while ((c = getopt(argc, argv, "CdFf:hlM:nrsv")) != -1)
+ while ((c = getopt(argc, argv, "CdFf:hlM:N:nrsv")) != -1)
switch (c)
{
case 'C' :
@@ -136,6 +136,9 @@ char *argv[];
case 'M' :
core = optarg;
break;
+ case 'N' :
+ kernel = optarg;
+ break;
case 'n' :
opts |= OPT_NODO;
mode = O_RDONLY;
@@ -154,21 +157,40 @@ char *argv[];
usage(argv[0]);
}
- if (core != NULL) {
- if (openkmem(core) == -1)
- exit(1);
+ if ((kernel != NULL) || (core != NULL)) {
(void) setgid(getgid());
(void) setuid(getuid());
}
+ bzero((char *)&ns, sizeof(ns));
+
gethostname(thishost, sizeof(thishost));
thishost[sizeof(thishost) - 1] = '\0';
- if (!(opts & OPT_NODO) && ((fd = open(IPL_NAT, mode)) == -1) &&
- ((fd = open(IPL_NAT, O_RDONLY)) == -1)) {
- (void) fprintf(stderr, "%s: open: %s\n", IPL_NAT,
- STRERROR(errno));
- exit(-1);
+ if (!(opts & OPT_NODO) && (kernel == NULL) && (core == NULL)) {
+ if (openkmem(kernel, core) == -1)
+ exit(1);
+
+ if (((fd = open(IPL_NAT, mode)) == -1) &&
+ ((fd = open(IPL_NAT, O_RDONLY)) == -1)) {
+ (void) fprintf(stderr, "%s: open: %s\n", IPL_NAT,
+ STRERROR(errno));
+ exit(1);
+ }
+ if (ioctl(fd, SIOCGNATS, &nsp) == -1) {
+ perror("ioctl(SIOCGNATS)");
+ exit(1);
+ }
+ (void) setgid(getgid());
+ (void) setuid(getuid());
+ } else if ((kernel != NULL) || (core != NULL)) {
+ if (openkmem(kernel, core) == -1)
+ exit(1);
+
+ natstat_dead(nsp, kernel);
+ if (opts & (OPT_LIST|OPT_STAT))
+ dostats(nsp, opts);
+ exit(0);
}
if (opts & (OPT_FLUSH|OPT_CLEAR))
@@ -176,172 +198,113 @@ char *argv[];
if (file)
natparsefile(fd, file, opts);
if (opts & (OPT_LIST|OPT_STAT))
- dostats(fd, opts);
+ dostats(nsp, opts);
return 0;
}
-void printaps(aps, opts)
-ap_session_t *aps;
-int opts;
+/*
+ * Read nat statistic information in using a symbol table and memory file
+ * rather than doing ioctl's.
+ */
+void natstat_dead(nsp, kernel)
+natstat_t *nsp;
+char *kernel;
{
- ap_session_t ap;
- ftpinfo_t ftp;
- aproxy_t apr;
- raudio_t ra;
+ struct nlist nat_nlist[10] = {
+ { "nat_table" }, /* 0 */
+ { "nat_list" },
+ { "maptable" },
+ { "ipf_nattable_sz" },
+ { "ipf_natrules_sz" },
+ { "ipf_rdrrules_sz" }, /* 5 */
+ { "ipf_hostmap_sz" },
+ { "nat_instances" },
+ { "ap_sess_list" },
+ { NULL }
+ };
+ void *tables[2];
- if (kmemcpy((char *)&ap, (long)aps, sizeof(ap)))
- return;
- if (kmemcpy((char *)&apr, (long)ap.aps_apr, sizeof(apr)))
+ if (nlist(kernel, nat_nlist) == -1) {
+ fprintf(stderr, "nlist error\n");
return;
- printf("\tproxy %s/%d use %d flags %x\n", apr.apr_label,
- apr.apr_p, apr.apr_ref, apr.apr_flags);
- printf("\t\tproto %d flags %#x bytes ", ap.aps_p, ap.aps_flags);
-#ifdef USE_QUAD_T
- printf("%qu pkts %qu", (unsigned long long)ap.aps_bytes,
- (unsigned long long)ap.aps_pkts);
-#else
- printf("%lu pkts %lu", ap.aps_bytes, ap.aps_pkts);
-#endif
- printf(" data %p psiz %d\n", ap.aps_data, ap.aps_psiz);
- if ((ap.aps_p == IPPROTO_TCP) && (opts & OPT_VERBOSE)) {
- printf("\t\tstate[%u,%u], sel[%d,%d]\n",
- ap.aps_state[0], ap.aps_state[1],
- ap.aps_sel[0], ap.aps_sel[1]);
-#if (defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011)) || \
- (__FreeBSD_version >= 300000) || defined(OpenBSD)
- printf("\t\tseq: off %hd/%hd min %x/%x\n",
- ap.aps_seqoff[0], ap.aps_seqoff[1],
- ap.aps_seqmin[0], ap.aps_seqmin[1]);
- printf("\t\tack: off %hd/%hd min %x/%x\n",
- ap.aps_ackoff[0], ap.aps_ackoff[1],
- ap.aps_ackmin[0], ap.aps_ackmin[1]);
-#else
- printf("\t\tseq: off %hd/%hd min %lx/%lx\n",
- ap.aps_seqoff[0], ap.aps_seqoff[1],
- ap.aps_seqmin[0], ap.aps_seqmin[1]);
- printf("\t\tack: off %hd/%hd min %lx/%lx\n",
- ap.aps_ackoff[0], ap.aps_ackoff[1],
- ap.aps_ackmin[0], ap.aps_ackmin[1]);
-#endif
}
- if (!strcmp(apr.apr_label, "raudio") && ap.aps_psiz == sizeof(ra)) {
- if (kmemcpy((char *)&ra, (long)ap.aps_data, sizeof(ra)))
- return;
- printf("\tReal Audio Proxy:\n");
- printf("\t\tSeen PNA: %d\tVersion: %d\tEOS: %d\n",
- ra.rap_seenpna, ra.rap_version, ra.rap_eos);
- printf("\t\tMode: %#x\tSBF: %#x\n", ra.rap_mode, ra.rap_sbf);
- printf("\t\tPorts:pl %hu, pr %hu, sr %hu\n",
- ra.rap_plport, ra.rap_prport, ra.rap_srport);
- } else if (!strcmp(apr.apr_label, "ftp") &&
- (ap.aps_psiz == sizeof(ftp))) {
- if (kmemcpy((char *)&ftp, (long)ap.aps_data, sizeof(ftp)))
- return;
- printf("\tFTP Proxy:\n");
- printf("\t\tpassok: %d\n", ftp.ftp_passok);
- ftp.ftp_side[0].ftps_buf[FTP_BUFSZ - 1] = '\0';
- ftp.ftp_side[1].ftps_buf[FTP_BUFSZ - 1] = '\0';
- printf("\tClient:\n");
- printf("\t\trptr %p wptr %p seq %x len %d junk %d\n",
- ftp.ftp_side[0].ftps_rptr, ftp.ftp_side[0].ftps_wptr,
- ftp.ftp_side[0].ftps_seq, ftp.ftp_side[0].ftps_len,
- ftp.ftp_side[0].ftps_junk);
- printf("\t\tbuf [");
- printbuf(ftp.ftp_side[0].ftps_buf, FTP_BUFSZ, 1);
- printf("]\n\tServer:\n");
- printf("\t\trptr %p wptr %p seq %x len %d junk %d\n",
- ftp.ftp_side[1].ftps_rptr, ftp.ftp_side[1].ftps_wptr,
- ftp.ftp_side[1].ftps_seq, ftp.ftp_side[1].ftps_len,
- ftp.ftp_side[1].ftps_junk);
- printf("\t\tbuf [");
- printbuf(ftp.ftp_side[1].ftps_buf, FTP_BUFSZ, 1);
- printf("]\n");
- }
+ /*
+ * Normally the ioctl copies all of these values into the structure
+ * for us, before returning it to useland, so here we must copy each
+ * one in individually.
+ */
+ kmemcpy((char *)&tables, nat_nlist[0].n_value, sizeof(tables));
+ nsp->ns_table[0] = tables[0];
+ nsp->ns_table[1] = tables[1];
+
+ kmemcpy((char *)&nsp->ns_list, nat_nlist[1].n_value,
+ sizeof(nsp->ns_list));
+ kmemcpy((char *)&nsp->ns_maptable, nat_nlist[2].n_value,
+ sizeof(nsp->ns_maptable));
+ kmemcpy((char *)&nsp->ns_nattab_sz, nat_nlist[3].n_value,
+ sizeof(nsp->ns_nattab_sz));
+ kmemcpy((char *)&nsp->ns_rultab_sz, nat_nlist[4].n_value,
+ sizeof(nsp->ns_rultab_sz));
+ kmemcpy((char *)&nsp->ns_rdrtab_sz, nat_nlist[5].n_value,
+ sizeof(nsp->ns_rdrtab_sz));
+ kmemcpy((char *)&nsp->ns_hostmap_sz, nat_nlist[6].n_value,
+ sizeof(nsp->ns_hostmap_sz));
+ kmemcpy((char *)&nsp->ns_instances, nat_nlist[7].n_value,
+ sizeof(nsp->ns_instances));
+ kmemcpy((char *)&nsp->ns_apslist, nat_nlist[8].n_value,
+ sizeof(nsp->ns_apslist));
}
/*
- * Get a nat filter type given its kernel address.
+ * Display NAT statistics.
*/
-char *getnattype(ipnat)
-ipnat_t *ipnat;
-{
- char *which;
- ipnat_t ipnatbuff;
-
- if (!ipnat || (ipnat && kmemcpy((char *)&ipnatbuff, (long)ipnat,
- sizeof(ipnatbuff))))
- return "???";
-
- switch (ipnatbuff.in_redir)
- {
- case NAT_MAP :
- which = "MAP";
- break;
- case NAT_MAPBLK :
- which = "MAP-BLOCK";
- break;
- case NAT_REDIRECT :
- which = "RDR";
- break;
- case NAT_BIMAP :
- which = "BIMAP";
- break;
- default :
- which = "unknown";
- break;
- }
- return which;
-}
-
-
-void dostats(fd, opts)
-int fd, opts;
+void dostats(nsp, opts)
+natstat_t *nsp;
+int opts;
{
- hostmap_t hm, *hmp, **maptable;
- natstat_t ns, *nsp = &ns;
nat_t **nt[2], *np, nat;
- u_int hv, hv1, hv2;
ipnat_t ipn;
- bzero((char *)&ns, sizeof(ns));
-
- if (!(opts & OPT_NODO) && ioctl(fd, SIOCGNATS, &nsp) == -1) {
- perror("ioctl(SIOCGNATS)");
- return;
- }
-
+ /*
+ * Show statistics ?
+ */
if (opts & OPT_STAT) {
printf("mapped\tin\t%lu\tout\t%lu\n",
- ns.ns_mapped[0], ns.ns_mapped[1]);
+ nsp->ns_mapped[0], nsp->ns_mapped[1]);
printf("added\t%lu\texpired\t%lu\n",
- ns.ns_added, ns.ns_expire);
+ nsp->ns_added, nsp->ns_expire);
printf("no memory\t%lu\tbad nat\t%lu\n",
- ns.ns_memfail, ns.ns_badnat);
- printf("inuse\t%lu\nrules\t%lu\n", ns.ns_inuse, ns.ns_rules);
- printf("wilds\t%u\n", ns.ns_wilds);
+ nsp->ns_memfail, nsp->ns_badnat);
+ printf("inuse\t%lu\nrules\t%lu\n",
+ nsp->ns_inuse, nsp->ns_rules);
+ printf("wilds\t%u\n", nsp->ns_wilds);
if (opts & OPT_VERBOSE)
- printf("table %p list %p\n", ns.ns_table, ns.ns_list);
+ printf("table %p list %p\n",
+ nsp->ns_table, nsp->ns_list);
}
+
+ /*
+ * Show list of NAT rules and NAT sessions ?
+ */
if (opts & OPT_LIST) {
printf("List of active MAP/Redirect filters:\n");
- while (ns.ns_list) {
- if (kmemcpy((char *)&ipn, (long)ns.ns_list,
+ while (nsp->ns_list) {
+ if (kmemcpy((char *)&ipn, (long)nsp->ns_list,
sizeof(ipn))) {
perror("kmemcpy");
break;
}
if (opts & OPT_HITS)
printf("%d ", ipn.in_hits);
- printnat(&ipn, opts & (OPT_DEBUG|OPT_VERBOSE),
- (void *)ns.ns_list);
- ns.ns_list = ipn.in_next;
+ printnat(&ipn, opts & (OPT_DEBUG|OPT_VERBOSE));
+ nsp->ns_list = ipn.in_next;
}
nt[0] = (nat_t **)malloc(sizeof(*nt) * NAT_SIZE);
- if (kmemcpy((char *)nt[0], (long)ns.ns_table[0],
+ if (kmemcpy((char *)nt[0], (long)nsp->ns_table[0],
sizeof(**nt) * NAT_SIZE)) {
perror("kmemcpy");
return;
@@ -349,89 +312,59 @@ int fd, opts;
printf("\nList of active sessions:\n");
- for (np = ns.ns_instances; np; np = nat.nat_next) {
+ for (np = nsp->ns_instances; np; np = nat.nat_next) {
if (kmemcpy((char *)&nat, (long)np, sizeof(nat)))
break;
-
- printf("%s %-15s %-5hu <- ->", getnattype(nat.nat_ptr),
- inet_ntoa(nat.nat_inip), ntohs(nat.nat_inport));
- printf(" %-15s %-5hu", inet_ntoa(nat.nat_outip),
- ntohs(nat.nat_outport));
- printf(" [%s %hu]", inet_ntoa(nat.nat_oip),
- ntohs(nat.nat_oport));
- if (opts & OPT_VERBOSE) {
- printf("\n\tage %lu use %hu sumd %s/",
- nat.nat_age, nat.nat_use,
- getsumd(nat.nat_sumd[0]));
- hv1 = NAT_HASH_FN(nat.nat_inip.s_addr,
- nat.nat_inport,
- 0xffffffff),
- hv1 = NAT_HASH_FN(nat.nat_oip.s_addr,
- hv1 + nat.nat_oport,
- NAT_TABLE_SZ),
- hv2 = NAT_HASH_FN(nat.nat_outip.s_addr,
- nat.nat_outport,
- 0xffffffff),
- hv2 = NAT_HASH_FN(nat.nat_oip.s_addr,
- hv2 + nat.nat_oport,
- NAT_TABLE_SZ),
- printf("%s pr %u bkt %d/%d flags %x ",
- getsumd(nat.nat_sumd[1]), nat.nat_p,
- hv1, hv2, nat.nat_flags);
-#ifdef USE_QUAD_T
- printf("bytes %qu pkts %qu",
- (unsigned long long)nat.nat_bytes,
- (unsigned long long)nat.nat_pkts);
-#else
- printf("bytes %lu pkts %lu",
- nat.nat_bytes, nat.nat_pkts);
-#endif
-#if SOLARIS
- printf(" %lx", nat.nat_ipsumd);
-#endif
- }
- putchar('\n');
- if (nat.nat_aps)
- printaps(nat.nat_aps, opts);
+ printactivenat(&nat, opts);
}
- if (opts & OPT_VERBOSE) {
- printf("\nList of active host mappings:\n");
-
- maptable = (hostmap_t **)malloc(sizeof(hostmap_t *) *
- ns.ns_hostmap_sz);
- if (kmemcpy((char *)maptable, (u_long)ns.ns_maptable,
- sizeof(hostmap_t *) * ns.ns_hostmap_sz)) {
- perror("kmemcpy (maptable)");
- return;
- }
+ if (opts & OPT_VERBOSE)
+ showhostmap(nsp);
+ free(nt[0]);
+ }
+}
+
+
+/*
+ * display the active host mapping table.
+ */
+void showhostmap(nsp)
+natstat_t *nsp;
+{
+ hostmap_t hm, *hmp, **maptable;
+ u_int hv;
+
+ printf("\nList of active host mappings:\n");
- for (hv = 0; hv < ns.ns_hostmap_sz; hv++) {
- hmp = maptable[hv];
+ maptable = (hostmap_t **)malloc(sizeof(hostmap_t *) *
+ nsp->ns_hostmap_sz);
+ if (kmemcpy((char *)maptable, (u_long)nsp->ns_maptable,
+ sizeof(hostmap_t *) * nsp->ns_hostmap_sz)) {
+ perror("kmemcpy (maptable)");
+ return;
+ }
- while(hmp) {
+ for (hv = 0; hv < nsp->ns_hostmap_sz; hv++) {
+ hmp = maptable[hv];
- if (kmemcpy((char *)&hm, (u_long)hmp,
- sizeof(hostmap_t))) {
- perror("kmemcpy (hostmap)");
- return;
- }
-
- printf("%s -> ",
- inet_ntoa(hm.hm_realip));
- printf("%s ", inet_ntoa(hm.hm_mapip));
- printf("(use = %d hv = %u)\n",
- hm.hm_ref, hv);
- hmp = hm.hm_next;
- }
+ while (hmp) {
+ if (kmemcpy((char *)&hm, (u_long)hmp, sizeof(hm))) {
+ perror("kmemcpy (hostmap)");
+ return;
}
- free(maptable);
+
+ printhostmap(&hm, hv);
+ hmp = hm.hm_next;
}
- free(nt[0]);
}
+ free(maptable);
}
+/*
+ * Issue an ioctl to flush either the NAT rules table or the active mapping
+ * table or both.
+ */
void flushtable(fd, opts)
int fd, opts;
{
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