Import patch ipxfrm-20040707_2.diff
(Logical change 1.53)
diff --git a/include/libnetlink.h b/include/libnetlink.h
index 45d3ad2..3ff0dfc 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -15,6 +15,7 @@
};
extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
+extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol);
extern void rtnl_close(struct rtnl_handle *rth);
extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
@@ -36,6 +37,7 @@
extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen);
extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
+extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
extern int rtnl_listen(struct rtnl_handle *, int (*handler)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
void *jarg);
diff --git a/include/utils.h b/include/utils.h
index d6db809..66bcf0f 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -22,6 +22,9 @@
#ifndef IPPROTO_AH
#define IPPROTO_AH 51
#endif
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif
#define SPRINT_BSIZE 64
#define SPRINT_BUF(x) char x[SPRINT_BSIZE]
@@ -29,6 +32,8 @@
extern void incomplete_command(void) __attribute__((noreturn));
#define NEXT_ARG() do { argv++; if (--argc <= 0) incomplete_command(); } while(0)
+#define NEXT_ARG_OK() (argc - 1 > 0)
+#define PREV_ARG() do { argv--; argc++; } while(0)
typedef struct
{
@@ -56,17 +61,18 @@
u_int8_t ipx_node[IPX_NODE_LEN];
};
-extern __u32 get_addr32(char *name);
+extern __u32 get_addr32(const char *name);
extern int get_addr_1(inet_prefix *dst, const char *arg, int family);
-extern int get_prefix_1(inet_prefix *dst, char *arg, int family);
-extern int get_addr(inet_prefix *dst, char *arg, int family);
-extern int get_prefix(inet_prefix *dst, char *arg, int family);
+extern int get_prefix_1(inet_prefix *dst, const char *arg, int family);
+extern int get_addr(inet_prefix *dst, const char *arg, int family);
+extern int get_prefix(inet_prefix *dst, const char *arg, int family);
extern int get_integer(int *val, const char *arg, int base);
extern int get_unsigned(unsigned *val, const char *arg, int base);
#define get_byte get_u8
#define get_ushort get_u16
#define get_short get_s16
+extern int get_u64(__u64 *val, const char *arg, int base);
extern int get_u32(__u32 *val, const char *arg, int base);
extern int get_u16(__u16 *val, const char *arg, int base);
extern int get_s16(__s16 *val, const char *arg, int base);
@@ -81,6 +87,7 @@
extern const char *rt_addr_n2a(int af, int len, const void *addr,
char *buf, int buflen);
+void missarg(const char *) __attribute__((noreturn));
void invarg(const char *, const char *) __attribute__((noreturn));
void duparg(const char *, const char *) __attribute__((noreturn));
void duparg2(const char *, const char *) __attribute__((noreturn));
diff --git a/ip/Makefile b/ip/Makefile
index 2aa0051..df4fbda 100644
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -1,6 +1,6 @@
IPOBJ=ip.o ipaddress.o iproute.o iprule.o \
rtm_map.o iptunnel.o ipneigh.o iplink.o ipmaddr.o \
- ipmonitor.o ipmroute.o
+ ipmonitor.o ipmroute.o ipxfrm.o xfrm_state.o xfrm_policy.o
RTMONOBJ=rtmon.o
diff --git a/ip/ip.c b/ip/ip.c
index fe37992..6358ec4 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -40,7 +40,7 @@
fprintf(stderr,
"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
"where OBJECT := { link | addr | route | rule | neigh | tunnel |\n"
-" maddr | mroute | monitor }\n"
+" maddr | mroute | monitor | xfrm }\n"
" OPTIONS := { -V[ersion] | -s[tatistics] | -r[esolve] |\n"
" -f[amily] { inet | inet6 | ipx | dnet | link } | -o[neline] }\n");
exit(-1);
@@ -136,6 +136,8 @@
return do_iptunnel(argc-1, argv+1);
if (strcmp(basename, "ipmonitor") == 0)
return do_ipmonitor(argc-1, argv+1);
+ if (strcmp(basename, "ipxfrm") == 0)
+ return do_xfrm(argc-1, argv+1);
if (argc > 1) {
if (matches(argv[1], "address") == 0)
@@ -158,6 +160,8 @@
return do_iptunnel(argc-2, argv+2);
if (matches(argv[1], "monitor") == 0)
return do_ipmonitor(argc-2, argv+2);
+ if (matches(argv[1], "xfrm") == 0)
+ return do_xfrm(argc-2, argv+2);
if (matches(argv[1], "help") == 0)
usage();
fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv[1]);
diff --git a/ip/ip_common.h b/ip/ip_common.h
index 5ac4321..598c998 100644
--- a/ip/ip_common.h
+++ b/ip/ip_common.h
@@ -18,3 +18,4 @@
extern int do_ipmonitor(int argc, char **argv);
extern int do_multiaddr(int argc, char **argv);
extern int do_multiroute(int argc, char **argv);
+extern int do_xfrm(int argc, char **argv);
diff --git a/ip/ipxfrm.c b/ip/ipxfrm.c
index e69de29..786600b 100644
--- a/ip/ipxfrm.c
+++ b/ip/ipxfrm.c
@@ -0,0 +1,808 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * based on ip.c, iproute.c
+ */
+/*
+ * Authors:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <netdb.h>
+#include <net/if.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/xfrm.h>
+
+#include "utils.h"
+#include "xfrm.h"
+
+struct xfrm_filter filter;
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+ fprintf(stderr,
+ "Usage: ip xfrm XFRM_OBJECT { COMMAND | help }\n"
+ "where XFRM_OBJECT := { state | policy }\n");
+ exit(-1);
+}
+
+const char *strxf_flags(__u8 flags)
+{
+ static char str[16];
+ const int sn = sizeof(flags) * 8 - 1;
+ __u8 b;
+ int i = 0;
+
+ for (b = (1 << sn); b > 0; b >>= 1)
+ str[i++] = ((b & flags) ? '1' : '0');
+ str[i] = '\0';
+
+ return str;
+}
+
+const char *strxf_share(__u8 share)
+{
+ static char str[32];
+
+ switch (share) {
+ case XFRM_SHARE_ANY:
+ strcpy(str, "any");
+ break;
+ case XFRM_SHARE_SESSION:
+ strcpy(str, "session");
+ break;
+ case XFRM_SHARE_USER:
+ strcpy(str, "user");
+ break;
+ case XFRM_SHARE_UNIQUE:
+ strcpy(str, "unique");
+ break;
+ default:
+ sprintf(str, "unknown-share(%d)", share);
+ break;
+ }
+
+ return str;
+}
+
+void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
+ __u8 mode, __u32 reqid, __u16 family, FILE *fp,
+ const char *prefix)
+{
+ char abuf[256];
+ __u32 spi;
+ struct protoent *pp;
+ char pbuf[32];
+ char *p;
+
+ if (prefix)
+ fprintf(fp, prefix);
+
+ memset(abuf, '\0', sizeof(abuf));
+ fprintf(fp, "%s ", rt_addr_n2a(family, sizeof(*saddr),
+ saddr, abuf, sizeof(abuf)));
+ memset(abuf, '\0', sizeof(abuf));
+ fprintf(fp, "%s\n", rt_addr_n2a(family, sizeof(id->daddr),
+ &id->daddr, abuf, sizeof(abuf)));
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "\t");
+
+ pp = getprotobynumber(id->proto);
+ if (pp)
+ p = pp->p_name;
+ else {
+ sprintf(pbuf, "%d", id->proto);
+ p = pbuf;
+ }
+
+ switch (id->proto) {
+ case IPPROTO_ESP:
+ case IPPROTO_AH:
+ case IPPROTO_COMP:
+ fprintf(fp, "%s ", p);
+ break;
+ default:
+ fprintf(fp, "unspec(%s)", p);
+ break;
+ }
+
+ switch (id->proto) {
+ case IPPROTO_ESP:
+ case IPPROTO_AH:
+ case IPPROTO_COMP:
+ default:
+ spi = ntohl(id->spi);
+ fprintf(fp, "spi %d(0x%08x) ", spi, spi);
+ break;
+ }
+
+ fprintf(fp, "reqid %d ", reqid);
+ fprintf(fp, "%s\n", (mode ? "tunnel" : "transport"));
+}
+
+static const char *strxf_limit(__u64 limit)
+{
+ static char str[32];
+ if (limit == XFRM_INF)
+ strcpy(str, "(INF)");
+ else
+ sprintf(str, "%llu", limit);
+
+ return str;
+}
+
+void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix)
+{
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "stats:\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "replay-window %d ", s->replay_window);
+ fprintf(fp, "replay %d ", s->replay);
+ fprintf(fp, "failed %d", s->integrity_failed);
+ fprintf(fp, "\n");
+}
+
+static const char *strxf_time(__u64 time)
+{
+ static char str[32];
+ struct tm *tp;
+ time_t t;
+
+ if (time == 0) {
+ strcpy(str, "(undefined)");
+ } else {
+ /* XXX: treat time in the same manner of xfrm_{user,state}.c */
+ t = (long)time;
+ tp = localtime(&t);
+
+ sprintf(str, "%04d/%02d/%02d %02d:%02d:%02d",
+ tp->tm_year + 1900, tp->tm_mon + 1, tp->tm_mday,
+ tp->tm_hour, tp->tm_min, tp->tm_sec);
+ }
+
+ return str;
+}
+
+void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
+ struct xfrm_lifetime_cur *cur,
+ FILE *fp, const char *prefix)
+{
+ if (cfg) {
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "lifetime config:\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "limit: ");
+ fprintf(fp, "soft ");
+ fprintf(fp, strxf_limit(cfg->soft_byte_limit));
+ fprintf(fp, "(bytes), hard ");
+ fprintf(fp, strxf_limit(cfg->hard_byte_limit));
+ fprintf(fp, "(bytes)\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "limit: ");
+ fprintf(fp, "soft ");
+ fprintf(fp, strxf_limit(cfg->soft_packet_limit));
+ fprintf(fp, "(packets), hard ");
+ fprintf(fp, strxf_limit(cfg->hard_packet_limit));
+ fprintf(fp, "(packets)\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "expire add: ");
+ fprintf(fp, "soft ");
+ fprintf(fp, "%llu", cfg->soft_add_expires_seconds);
+ fprintf(fp, "(sec), hard ");
+ fprintf(fp, "%llu", cfg->hard_add_expires_seconds);
+ fprintf(fp, "(sec)\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "expire use: ");
+ fprintf(fp, "soft ");
+ fprintf(fp, "%llu", cfg->soft_use_expires_seconds);
+ fprintf(fp, "(sec), hard ");
+ fprintf(fp, "%llu", cfg->hard_use_expires_seconds);
+ fprintf(fp, "(sec)\n");
+ }
+ if (cur) {
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "lifetime current:\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "%llu(bytes), ", cur->bytes);
+ fprintf(fp, "%llu(packets)\n", cur->packets);
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, " ");
+ fprintf(fp, "add %s ", strxf_time(cur->add_time));
+ fprintf(fp, "use %s", strxf_time(cur->use_time));
+ fprintf(fp, "\n");
+ }
+}
+
+void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
+ FILE *fp, const char *prefix)
+{
+ char abuf[256];
+ __u16 f;
+
+ f = sel->family;
+ if (f == AF_UNSPEC)
+ f = family;
+ if (f == AF_UNSPEC)
+ f = preferred_family;
+
+ if (prefix)
+ fprintf(fp, prefix);
+
+ memset(abuf, '\0', sizeof(abuf));
+ fprintf(fp, "%s/%d[%u]", rt_addr_n2a(f, sizeof(sel->saddr),
+ &sel->saddr,
+ abuf, sizeof(abuf)),
+ sel->prefixlen_s, sel->sport);
+
+ memset(abuf, '\0', sizeof(abuf));
+ fprintf(fp, " %s/%d[%u]", rt_addr_n2a(f, sizeof(sel->daddr),
+ &sel->daddr,
+ abuf, sizeof(abuf)),
+ sel->prefixlen_d, sel->dport);
+
+ fprintf(fp, "\n");
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "\t");
+
+ fprintf(fp, "upspec %u ", sel->proto);
+
+ if (sel->ifindex > 0) {
+ char buf[IF_NAMESIZE];
+
+ memset(buf, '\0', sizeof(buf));
+ if_indextoname(sel->ifindex, buf);
+ fprintf(fp, "dev %s ", buf);
+ } else
+ fprintf(fp, "dev (none) ");
+
+ fprintf(fp, "uid %u", sel->user);
+ fprintf(fp, "\n");
+}
+
+static void xfrm_algo_print(struct xfrm_algo *algo, FILE *fp,
+ const char *prefix)
+{
+ int len;
+ int i;
+
+ if (prefix)
+ fprintf(fp, prefix);
+
+ fprintf(fp, "%s", algo->alg_name);
+
+ len = algo->alg_key_len / 8;
+ for (i = 0; i < len; i ++) {
+ if (i % 4 == 0)
+ fprintf(fp, " ");
+ fprintf(fp, "%x", algo->alg_key[i]);
+ }
+
+ fprintf(fp, "\n");
+}
+
+static const char *strxf_mask(__u32 mask)
+{
+ static char str[128];
+ const int sn = sizeof(mask) * 8 - 1;
+ __u32 b;
+ int finish = 0;
+ int broken = 0;
+ int i = 0;
+
+ for (b = (1 << sn); b > 0; b >>= 1) {
+ if ((b & mask) == 0) {
+ if (!finish)
+ finish = 1;
+ } else {
+ if (!finish)
+ i ++;
+ else {
+ broken = 1;
+ break;
+ }
+ }
+ }
+
+ if (!broken)
+ sprintf(str, "%u", i);
+ else
+ sprintf(str, "broken(%u)", mask);
+
+ return str;
+}
+
+static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int ntmpls,
+ __u16 family, FILE *fp, const char *prefix)
+{
+ char buf[32];
+ const char *p = NULL;
+ int i;
+
+ if (prefix) {
+ strcpy(buf, prefix);
+ strcat(buf, " ");
+ } else
+ strcpy(buf, " ");
+ p = buf;
+
+ for (i = 0; i < ntmpls; i++) {
+ struct xfrm_user_tmpl *tmpl = &tmpls[i];
+
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "tmpl-%d:\n", i+1);
+ xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
+ tmpl->reqid, family, fp, p);
+
+ fprintf(fp, p);
+ fprintf(fp, "\t");
+ fprintf(fp, "level %s ", ((tmpl->optional == 0) ? "required" :
+ (tmpl->optional == 1) ? "use" :
+ "unknown-level"));
+ fprintf(fp, "share %s ", strxf_share(tmpl->share));
+ fprintf(fp, "algo-mask:");
+ fprintf(fp, "E=%s, ", strxf_mask(tmpl->ealgos));
+ fprintf(fp, "A=%s, ", strxf_mask(tmpl->aalgos));
+ fprintf(fp, "C=%s", strxf_mask(tmpl->calgos));
+ fprintf(fp, "\n");
+ }
+}
+
+void xfrm_xfrma_print(struct rtattr *tb[], int ntb, __u16 family,
+ FILE *fp, const char *prefix)
+{
+ int i;
+
+ for (i = 0; i < ntb; i++) {
+ __u16 type = tb[i]->rta_type;
+ void *data = RTA_DATA(tb[i]);
+
+ switch (type) {
+ case XFRMA_ALG_CRYPT:
+ if (prefix)
+ fprintf(fp, prefix);
+ xfrm_algo_print((struct xfrm_algo *)data, fp, "E:");
+ break;
+ case XFRMA_ALG_AUTH:
+ if (prefix)
+ fprintf(fp, prefix);
+ xfrm_algo_print((struct xfrm_algo *)data, fp, "A:");
+ break;
+ case XFRMA_ALG_COMP:
+ if (prefix)
+ fprintf(fp, prefix);
+ xfrm_algo_print((struct xfrm_algo *)data, fp, "C:");
+ break;
+ case XFRMA_ENCAP:
+ if (prefix)
+ fprintf(fp, prefix);
+ /* XXX */
+ fprintf(fp, "encap: (not implemented yet!)\n");
+ break;
+ case XFRMA_TMPL:
+ {
+ int len = tb[i]->rta_len;
+ int ntmpls = len / sizeof(struct xfrm_user_tmpl);
+
+ xfrm_tmpl_print((struct xfrm_user_tmpl *)data,
+ ntmpls, family, fp, prefix);
+ break;
+ }
+ default:
+ if (prefix)
+ fprintf(fp, prefix);
+ fprintf(fp, "unknown rta_type: %u\n", type);
+ break;
+ }
+ }
+}
+
+int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
+ int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ inet_prefix dst;
+ inet_prefix src;
+ __u8 proto = 0;
+
+ memset(&dst, 0, sizeof(dst));
+ memset(&src, 0, sizeof(src));
+
+ while (1) {
+ if (strcmp(*argv, "src") == 0) {
+ NEXT_ARG();
+
+ get_prefix(&src, *argv, preferred_family);
+ if (src.family == AF_UNSPEC)
+ invarg("\"SADDR\" address family is AF_UNSPEC", *argv);
+ if (family)
+ *family = src.family;
+
+ memcpy(saddr, &src.data, sizeof(*saddr));
+
+ filter.id_src_mask = src.bitlen;
+
+ } else if (strcmp(*argv, "dst") == 0) {
+ NEXT_ARG();
+
+ get_prefix(&dst, *argv, preferred_family);
+ if (dst.family == AF_UNSPEC)
+ invarg("\"DADDR\" address family is AF_UNSPEC", *argv);
+ if (family)
+ *family = dst.family;
+
+ memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
+
+ filter.id_dst_mask = dst.bitlen;
+
+ } else if (strcmp(*argv, "proto") == 0) {
+ struct protoent *pp;
+
+ NEXT_ARG();
+
+ pp = getprotobyname(*argv);
+ if (pp)
+ proto = pp->p_proto;
+ else {
+ if (get_u8(&proto, *argv, 0))
+ invarg("\"PROTO\" is invalid", *argv);
+ }
+
+ switch (proto) {
+ case IPPROTO_ESP:
+ case IPPROTO_AH:
+ case IPPROTO_COMP:
+ id->proto = proto;
+ break;
+ default:
+ invarg("\"PROTO\" is unsuppored proto", *argv);
+ }
+
+ filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "spi") == 0) {
+ __u32 spi;
+
+ NEXT_ARG();
+ if (get_u32(&spi, *argv, 0))
+ invarg("\"SPI\" is invalid", *argv);
+
+ spi = htonl(spi);
+ id->spi = spi;
+
+ filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
+
+ } else {
+ PREV_ARG(); /* back track */
+ break;
+ }
+
+ if (!NEXT_ARG_OK())
+ break;
+ NEXT_ARG();
+ }
+
+ if (src.family && dst.family && (src.family != dst.family))
+ invarg("the same address family is required between \"SADDR\" and \"DADDR\"", *argv);
+ if (proto == 0)
+ missarg("PROTO");
+
+ if (argc == *argcp)
+ missarg("ID");
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+
+ if (matches(*argv, "transport") == 0)
+ *mode = 0;
+ else if (matches(*argv, "tunnel") == 0)
+ *mode = 1;
+ else
+ invarg("\"MODE\" is invalid", *argv);
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+/* NOTE: reqid is used by host-byte order */
+int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+
+ if (get_u32(reqid, *argv, 0))
+ invarg("\"REQID\" is invalid", *argv);
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
+ int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ __u8 upspec;
+
+ while (1) {
+ if (strcmp(*argv, "proto") == 0) {
+ NEXT_ARG();
+
+ if (strcmp(*argv, "any") == 0)
+ upspec = 0;
+ else {
+ struct protoent *pp;
+ pp = getprotobyname(*argv);
+ if (pp)
+ upspec = pp->p_proto;
+ else {
+ if (get_u8(&upspec, *argv, 0))
+ invarg("\"UPSPEC\" is invalid", *argv);
+ }
+ }
+ sel->proto = upspec;
+
+ filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "sport") == 0) {
+ NEXT_ARG();
+
+ if (get_u16(&sel->sport, *argv, 0))
+ invarg("\"PORT\" is invalid", *argv);
+ sel->sport = htons(sel->sport);
+ if (sel->sport)
+ sel->sport_mask = ~((__u16)0);
+
+ filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "dport") == 0) {
+ NEXT_ARG();
+
+ if (get_u16(&sel->dport, *argv, 0))
+ invarg("\"PORT\" is invalid", *argv);
+ sel->dport = htons(sel->dport);
+ if (sel->dport)
+ sel->dport_mask = ~((__u16)0);
+
+ filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
+
+ } else {
+ PREV_ARG(); /* back track */
+ break;
+ }
+
+ if (!NEXT_ARG_OK())
+ break;
+ NEXT_ARG();
+ }
+ if (argc == *argcp)
+ missarg("UPSPEC");
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ inet_prefix dst;
+ inet_prefix src;
+
+ memset(&dst, 0, sizeof(dst));
+ memset(&src, 0, sizeof(src));
+
+ while (1) {
+ if (strcmp(*argv, "src") == 0) {
+ NEXT_ARG();
+
+ get_prefix(&src, *argv, preferred_family);
+ if (src.family == AF_UNSPEC)
+ invarg("\"SADDR\" address family is AF_UNSPEC", *argv);
+ sel->family = src.family;
+
+ memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
+ sel->prefixlen_s = src.bitlen;
+
+ filter.sel_src_mask = src.bitlen;
+
+ } else if (strcmp(*argv, "dst") == 0) {
+ NEXT_ARG();
+
+ get_prefix(&dst, *argv, preferred_family);
+ if (dst.family == AF_UNSPEC)
+ invarg("\"DADDR\" address family is AF_UNSPEC", *argv);
+ sel->family = dst.family;
+
+ memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
+ sel->prefixlen_d = dst.bitlen;
+
+ filter.sel_dst_mask = dst.bitlen;
+
+ } else if (strcmp(*argv, "upspec") == 0) {
+ NEXT_ARG();
+
+ xfrm_selector_upspec_parse(sel, &argc, &argv);
+
+ } else if (strcmp(*argv, "dev") == 0) {
+ int ifindex;
+
+ NEXT_ARG();
+
+ if (strcmp(*argv, "none") == 0)
+ ifindex = 0;
+ else {
+ ifindex = if_nametoindex(*argv);
+ if (ifindex <= 0)
+ invarg("\"DEV\" is invalid", *argv);
+ }
+ sel->ifindex = ifindex;
+
+ filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
+
+ } else {
+ PREV_ARG(); /* back track */
+ break;
+ }
+
+ if (!NEXT_ARG_OK())
+ break;
+
+ NEXT_ARG();
+ }
+
+ if (src.family && dst.family && (src.family != dst.family))
+ invarg("the same address family is required between \"SADDR\" and \"DADDR\"", *argv);
+
+ if (argc == *argcp)
+ missarg("SELECTOR");
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
+ int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ int ret;
+
+ if (strcmp(*argv, "time-soft") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
+ if (ret)
+ invarg("\"time-soft\" value is invalid", *argv);
+ } else if (strcmp(*argv, "time-hard") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
+ if (ret)
+ invarg("\"time-hard\" value is invalid", *argv);
+ } else if (strcmp(*argv, "time-use-soft") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
+ if (ret)
+ invarg("\"time-use-soft\" value is invalid", *argv);
+ } else if (strcmp(*argv, "time-use-hard") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
+ if (ret)
+ invarg("\"time-use-hard\" value is invalid", *argv);
+ } else if (strcmp(*argv, "byte-soft") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->soft_byte_limit, *argv, 0);
+ if (ret)
+ invarg("\"byte-soft\" value is invalid", *argv);
+ } else if (strcmp(*argv, "byte-hard") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->hard_byte_limit, *argv, 0);
+ if (ret)
+ invarg("\"byte-hard\" value is invalid", *argv);
+ } else if (strcmp(*argv, "packet-soft") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->soft_packet_limit, *argv, 0);
+ if (ret)
+ invarg("\"packet-soft\" value is invalid", *argv);
+ } else if (strcmp(*argv, "packet-hard") == 0) {
+ NEXT_ARG();
+ ret = get_u64(&lft->hard_packet_limit, *argv, 0);
+ if (ret)
+ invarg("\"packet-hard\" value is invalid", *argv);
+ } else
+ invarg("\"LIMIT\" is invalid", *argv);
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+int do_xfrm(int argc, char **argv)
+{
+ memset(&filter, 0, sizeof(filter));
+
+ if (argc < 1)
+ usage();
+
+ if (strcmp(*argv, "state") == 0 ||
+ strcmp(*argv, "sa") == 0) {
+ return do_xfrm_state(argc-1, argv+1);
+ } else if (strcmp(*argv, "policy") == 0 ||
+ strcmp(*argv, "pol") == 0) {
+ return do_xfrm_policy(argc-1, argv+1);
+ } else if (strcmp(*argv, "help") == 0) {
+ usage();
+ fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
+ exit(-1);
+ }
+ usage();
+}
diff --git a/ip/xfrm.h b/ip/xfrm.h
index e69de29..1d8023b 100644
--- a/ip/xfrm.h
+++ b/ip/xfrm.h
@@ -0,0 +1,102 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * Authors:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#ifndef __XFRM_H__
+#define __XFRM_H__ 1
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+
+#define XFRM_MAX_DEPTH 6
+
+#define XFRMS_RTA(x) ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_usersa_info))))
+#define XFRMS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_usersa_info))
+
+#define XFRMP_RTA(x) ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_info))))
+#define XFRMP_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_userpoilcy_info))
+
+struct xfrm_buffer {
+ char *buf;
+ int size;
+ int offset;
+
+ int nlmsg_count;
+ struct rtnl_handle *rth;
+};
+
+struct xfrm_filter {
+ int use;
+
+ struct xfrm_usersa_info xsinfo;
+ __u32 id_src_mask;
+ __u32 id_dst_mask;
+ __u32 id_proto_mask;
+ __u32 id_spi_mask;
+ __u32 mode_mask;
+ __u32 reqid_mask;
+ __u32 state_flags_mask;
+
+ struct xfrm_userpolicy_info xpinfo;
+ __u32 dir_mask;
+ __u32 sel_src_mask;
+ __u32 sel_dst_mask;
+ __u32 sel_dev_mask;
+ __u32 upspec_proto_mask;
+ __u32 upspec_sport_mask;
+ __u32 upspec_dport_mask;
+ __u32 index_mask;
+ __u32 action_mask;
+ __u32 priority_mask;
+};
+#define XFRM_FILTER_MASK_FULL (~(__u32)0)
+
+extern struct xfrm_filter filter;
+
+int do_xfrm_state(int argc, char **argv);
+int do_xfrm_policy(int argc, char **argv);
+
+const char *strxf_flags(__u8 flags);
+const char *strxf_share(__u8 share);
+void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
+ __u8 mode, __u32 reqid, __u16 family, FILE *fp,
+ const char *prefix);
+void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix);
+void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
+ struct xfrm_lifetime_cur *cur,
+ FILE *fp, const char *prefix);
+void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
+ FILE *fp, const char *prefix);
+void xfrm_xfrma_print(struct rtattr *tb[], int ntb, __u16 family,
+ FILE *fp, const char *prefix);
+int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
+ int *argcp, char ***argvp);
+int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp);
+int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp);
+int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp);
+int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
+ int *argcp, char ***argvp);
+
+#endif
diff --git a/ip/xfrm_policy.c b/ip/xfrm_policy.c
index e69de29..4449d10 100644
--- a/ip/xfrm_policy.c
+++ b/ip/xfrm_policy.c
@@ -0,0 +1,671 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * based on iproute.c
+ */
+/*
+ * Authors:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <linux/netlink.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+#include "xfrm.h"
+#include "ip_common.h"
+
+//#define NLMSG_FLUSH_BUF_SIZE (4096-512)
+#define NLMSG_FLUSH_BUF_SIZE 8192
+
+/*
+ * Receiving buffer defines:
+ * nlmsg
+ * data = struct xfrm_userpolicy_info
+ * rtattr
+ * data = struct xfrm_user_tmpl[]
+ */
+#define NLMSG_BUF_SIZE 4096
+#define RTA_BUF_SIZE 2048
+#define XFRM_TMPLS_BUF_SIZE 1024
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: ip xfrm policy { add | update } dir DIR sel SELECTOR [ index INDEX ] \n");
+ fprintf(stderr, " [ action ACTION ] [ priority PRIORITY ] [ LIMIT-LIST ] [ TMPL-LIST ]\n");
+ fprintf(stderr, " [ sel SELECTOR | index INDEX ] [ TMPL-LIST ]\n");
+ fprintf(stderr, "Usage: ip xfrm policy { delete | get } dir DIR [ sel SELECTOR | index INDEX ]\n");
+ fprintf(stderr, "Usage: ip xfrm policy { flush | list } [ dir DIR ] [ sel SELECTOR ]\n");
+ fprintf(stderr, " [ index INDEX ] [ action ACTION ] [ priority PRIORITY ]\n");
+ fprintf(stderr, "DIR := [ in | out | fwd ]\n");
+
+ fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
+
+ fprintf(stderr, "UPSPEC := proto PROTO [ sport PORT ] [ dport PORT ]\n");
+
+ //fprintf(stderr, "DEV - device name(default=none)\n");
+
+ fprintf(stderr, "ACTION := [ allow | block ](default=allow)\n");
+
+ //fprintf(stderr, "PRIORITY - priority value(default=0)\n");
+
+ fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
+ fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
+ fprintf(stderr, " [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] NUMBER ]\n");
+
+ fprintf(stderr, "TMPL-LIST := [ TMPL-LIST ] | [ tmpl TMPL ] | [ tmpl remain ](change only)\n");
+ fprintf(stderr, "TMPL := ID [ mode MODE ] [ reqid REQID ] [ level LEVEL ]\n");
+ fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
+
+ fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
+
+ fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
+ //fprintf(stderr, "REQID - number(default=0)\n");
+ fprintf(stderr, "LEVEL := [ required | use ](default=required)\n");
+
+ exit(-1);
+}
+
+static int xfrm_policy_dir_parse(__u8 *dir, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+
+ if (strcmp(*argv, "in") == 0)
+ *dir = XFRM_POLICY_IN;
+ else if (strcmp(*argv, "out") == 0)
+ *dir = XFRM_POLICY_OUT;
+ else if (strcmp(*argv, "fwd") == 0)
+ *dir = XFRM_POLICY_FWD;
+ else
+ invarg("\"DIR\" is invalid", *argv);
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+static int xfrm_tmpl_parse(struct xfrm_user_tmpl *tmpl,
+ int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ char *idp = NULL;
+
+ while (1) {
+ if (strcmp(*argv, "mode") == 0) {
+ NEXT_ARG();
+ xfrm_mode_parse(&tmpl->mode, &argc, &argv);
+ } else if (strcmp(*argv, "reqid") == 0) {
+ NEXT_ARG();
+ xfrm_reqid_parse(&tmpl->reqid, &argc, &argv);
+ } else if (strcmp(*argv, "level") == 0) {
+ NEXT_ARG();
+
+ if (strcmp(*argv, "required") == 0)
+ tmpl->optional = 0;
+ else if (strcmp(*argv, "use") == 0)
+ tmpl->optional = 1;
+ else
+ invarg("\"level\" value is invalid\n", *argv);
+
+ } else {
+ if (idp) {
+ PREV_ARG(); /* back track */
+ break;
+ }
+ idp = *argv;
+ xfrm_id_parse(&tmpl->saddr, &tmpl->id, &tmpl->family,
+ &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = tmpl->family;
+ }
+
+ if (!NEXT_ARG_OK())
+ break;
+
+ NEXT_ARG();
+ }
+ if (argc == *argcp)
+ missarg("TMPL");
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+static int xfrm_policy_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_userpolicy_info xpinfo;
+ char buf[RTA_BUF_SIZE];
+ } req;
+ char *dirp = NULL;
+ char tmpls_buf[XFRM_TMPLS_BUF_SIZE];
+ int tmpls_len = 0;
+
+ memset(&req, 0, sizeof(req));
+ memset(&tmpls_buf, 0, sizeof(tmpls_buf));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpinfo));
+ req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+ req.n.nlmsg_type = cmd;
+ req.xpinfo.sel.family = preferred_family;
+
+ req.xpinfo.lft.soft_byte_limit = XFRM_INF;
+ req.xpinfo.lft.hard_byte_limit = XFRM_INF;
+ req.xpinfo.lft.soft_packet_limit = XFRM_INF;
+ req.xpinfo.lft.hard_packet_limit = XFRM_INF;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "dir") == 0) {
+ if (dirp)
+ duparg("dir", *argv);
+ dirp = *argv;
+
+ NEXT_ARG();
+ xfrm_policy_dir_parse(&req.xpinfo.dir, &argc, &argv);
+
+ filter.dir_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "sel") == 0) {
+ NEXT_ARG();
+ xfrm_selector_parse(&req.xpinfo.sel, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = req.xpinfo.sel.family;
+
+ } else if (strcmp(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&req.xpinfo.index, *argv, 0))
+ invarg("\"INDEX\" is invalid", *argv);
+
+ filter.index_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "action") == 0) {
+ NEXT_ARG();
+ if (strcmp(*argv, "allow") == 0)
+ req.xpinfo.action = XFRM_POLICY_ALLOW;
+ else if (strcmp(*argv, "block") == 0)
+ req.xpinfo.action = XFRM_POLICY_BLOCK;
+ else
+ invarg("\"action\" value is invalid\n", *argv);
+
+ filter.action_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "priority") == 0) {
+ NEXT_ARG();
+ if (get_u32(&req.xpinfo.priority, *argv, 0))
+ invarg("\"PRIORITY\" is invalid", *argv);
+
+ filter.priority_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "limit") == 0) {
+ NEXT_ARG();
+ xfrm_lifetime_cfg_parse(&req.xpinfo.lft, &argc, &argv);
+ } else if (strcmp(*argv, "tmpl") == 0) {
+ struct xfrm_user_tmpl *tmpl;
+
+ if (tmpls_len + sizeof(*tmpl) > sizeof(tmpls_buf)) {
+ fprintf(stderr, "Too many tmpls: buffer overflow\n");
+ exit(1);
+ }
+ tmpl = (struct xfrm_user_tmpl *)((char *)tmpls_buf + tmpls_len);
+
+ tmpl->family = preferred_family;
+ tmpl->aalgos = (~(__u32)0);
+ tmpl->ealgos = (~(__u32)0);
+ tmpl->calgos = (~(__u32)0);
+
+ NEXT_ARG();
+ xfrm_tmpl_parse(tmpl, &argc, &argv);
+
+ tmpls_len += sizeof(*tmpl);
+ } else
+ invarg("unknown", *argv);
+
+ argc--; argv++;
+ }
+
+ if (!dirp) {
+ fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
+ exit(1);
+ }
+
+ if (tmpls_len > 0) {
+ addattr_l(&req.n, sizeof(req), XFRMA_TMPL,
+ (void *)tmpls_buf, tmpls_len);
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (req.xpinfo.sel.family == AF_UNSPEC)
+ req.xpinfo.sel.family = AF_INET;
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+ exit(2);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+static int xfrm_policy_filter_match(struct xfrm_userpolicy_info *xpinfo)
+{
+ if (!filter.use)
+ return 1;
+
+ if ((xpinfo->dir^filter.xpinfo.dir)&filter.dir_mask)
+ return 0;
+
+ if (filter.sel_src_mask) {
+ if (memcmp(&xpinfo->sel.saddr, &filter.xpinfo.sel.saddr,
+ filter.sel_src_mask) != 0)
+ return 0;
+ if (xpinfo->sel.prefixlen_s != filter.xpinfo.sel.prefixlen_s)
+ return 0;
+ }
+
+ if (filter.sel_dst_mask) {
+ if (memcmp(&xpinfo->sel.daddr, &filter.xpinfo.sel.daddr,
+ filter.sel_dst_mask) != 0)
+ return 0;
+ if (xpinfo->sel.prefixlen_d != filter.xpinfo.sel.prefixlen_d)
+ return 0;
+ }
+
+ if ((xpinfo->sel.ifindex^filter.xpinfo.sel.ifindex)&filter.sel_dev_mask)
+ return 0;
+
+ if ((xpinfo->sel.proto^filter.xpinfo.sel.proto)&filter.upspec_proto_mask)
+ return 0;
+
+ if (filter.upspec_sport_mask) {
+ if ((xpinfo->sel.sport^filter.xpinfo.sel.sport)&filter.upspec_sport_mask)
+ return 0;
+ }
+
+ if (filter.upspec_dport_mask) {
+ if ((xpinfo->sel.dport^filter.xpinfo.sel.dport)&filter.upspec_dport_mask)
+ return 0;
+ }
+
+ if ((xpinfo->index^filter.xpinfo.index)&filter.index_mask)
+ return 0;
+
+ if ((xpinfo->action^filter.xpinfo.action)&filter.action_mask)
+ return 0;
+
+ if ((xpinfo->priority^filter.xpinfo.priority)&filter.priority_mask)
+ return 0;
+
+ return 1;
+}
+
+int xfrm_policy_print(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr * tb[XFRM_MAX_DEPTH];
+ int ntb;
+
+ if (n->nlmsg_type != XFRM_MSG_NEWPOLICY &&
+ n->nlmsg_type != XFRM_MSG_DELPOLICY) {
+ fprintf(stderr, "Not a policy: %08x %08x %08x\n",
+ n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+ return 0;
+ }
+
+ len -= NLMSG_LENGTH(sizeof(*xpinfo));
+ if (len < 0) {
+ fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+ return -1;
+ }
+
+ if (!xfrm_policy_filter_match(xpinfo))
+ return 0;
+
+ memset(tb, 0, sizeof(tb));
+ ntb = parse_rtattr_byindex(tb, XFRM_MAX_DEPTH, XFRMP_RTA(xpinfo), len);
+
+ if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
+ fprintf(fp, "Deleted ");
+
+ xfrm_selector_print(&xpinfo->sel, preferred_family, fp, NULL);
+
+ fprintf(fp, "\t");
+ fprintf(fp, "%s ", (xpinfo->dir == XFRM_POLICY_IN ? "in " :
+ xpinfo->dir == XFRM_POLICY_OUT ? "out" :
+ xpinfo->dir == XFRM_POLICY_FWD ? "fwd" :
+ "unknown-dir"));
+ fprintf(fp, "%s ", (xpinfo->action == XFRM_POLICY_ALLOW ? "allow" :
+ xpinfo->action == XFRM_POLICY_BLOCK ? "block" :
+ "unknown-action"));
+ fprintf(fp, "index %u ", xpinfo->index);
+ fprintf(fp, "priority %u ", xpinfo->priority);
+ fprintf(fp, "share %s ", strxf_share(xpinfo->share));
+ fprintf(fp, "flags 0x%s", strxf_flags(xpinfo->flags));
+ fprintf(fp, "\n");
+
+ if (show_stats > 0)
+ xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, "\t");
+
+ xfrm_xfrma_print(tb, ntb, xpinfo->sel.family, fp, "\t");
+
+ return 0;
+}
+
+static int xfrm_policy_get_or_delete(int argc, char **argv, int delete,
+ void *res_nlbuf)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_userpolicy_id xpid;
+ } req;
+ char *dirp = NULL;
+ char *selp = NULL;
+ char *indexp = NULL;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpid));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = delete ? XFRM_MSG_DELPOLICY : XFRM_MSG_GETPOLICY;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "dir") == 0) {
+ if (dirp)
+ duparg("dir", *argv);
+ dirp = *argv;
+
+ NEXT_ARG();
+ xfrm_policy_dir_parse(&req.xpid.dir, &argc, &argv);
+
+ } else if (strcmp(*argv, "sel") == 0) {
+ if (selp)
+ duparg("sel", *argv);
+ selp = *argv;
+
+ NEXT_ARG();
+ xfrm_selector_parse(&req.xpid.sel, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = req.xpid.sel.family;
+
+ } else if (strcmp(*argv, "index") == 0) {
+ if (indexp)
+ duparg("index", *argv);
+ indexp = *argv;
+
+ NEXT_ARG();
+ if (get_u32(&req.xpid.index, *argv, 0))
+ invarg("\"INDEX\" is invalid", *argv);
+
+ } else
+ invarg("unknown", *argv);
+
+ argc--; argv++;
+ }
+
+ if (!dirp) {
+ fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
+ exit(1);
+ }
+ if (!selp && !indexp) {
+ fprintf(stderr, "Not enough information: either \"SELECTOR\" or \"INDEX\" is required.\n");
+ exit(1);
+ }
+ if (selp && indexp)
+ duparg2("SELECTOR", "INDEX");
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (req.xpid.sel.family == AF_UNSPEC)
+ req.xpid.sel.family = AF_INET;
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, res_nlbuf, NULL, NULL) < 0)
+ exit(2);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+static int xfrm_policy_delete(int argc, char **argv)
+{
+ return xfrm_policy_get_or_delete(argc, argv, 1, NULL);
+}
+
+static int xfrm_policy_get(int argc, char **argv)
+{
+ char buf[NLMSG_BUF_SIZE];
+ struct nlmsghdr *n = (struct nlmsghdr *)buf;
+
+ memset(buf, 0, sizeof(buf));
+
+ xfrm_policy_get_or_delete(argc, argv, 0, n);
+
+ if (xfrm_policy_print(NULL, n, (void*)stdout) < 0) {
+ fprintf(stderr, "An error :-)\n");
+ exit(1);
+ }
+
+ return 0;
+}
+
+/*
+ * With an existing policy of nlmsg, make new nlmsg for deleting the policy
+ * and store it to buffer.
+ */
+int xfrm_policy_keep(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+ struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
+ struct rtnl_handle *rth = xb->rth;
+ struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct nlmsghdr *new_n;
+ struct xfrm_userpolicy_id *xpid;
+
+ if (n->nlmsg_type != XFRM_MSG_NEWPOLICY) {
+ fprintf(stderr, "Not a policy: %08x %08x %08x\n",
+ n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+ return 0;
+ }
+
+ len -= NLMSG_LENGTH(sizeof(*xpinfo));
+ if (len < 0) {
+ fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+ return -1;
+ }
+
+ if (!xfrm_policy_filter_match(xpinfo))
+ return 0;
+
+ if (xb->offset > xb->size) {
+ fprintf(stderr, "Flush buffer overflow\n");
+ return -1;
+ }
+
+ new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
+ new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xpid));
+ new_n->nlmsg_flags = NLM_F_REQUEST;
+ new_n->nlmsg_type = XFRM_MSG_DELPOLICY;
+ new_n->nlmsg_seq = ++rth->seq;
+
+ xpid = NLMSG_DATA(new_n);
+ memcpy(&xpid->sel, &xpinfo->sel, sizeof(xpid->sel));
+ xpid->dir = xpinfo->dir;
+ xpid->index = xpinfo->index;
+
+ xb->offset += new_n->nlmsg_len;
+ xb->nlmsg_count ++;
+
+ return 0;
+}
+
+static int xfrm_policy_list_or_flush(int argc, char **argv, int flush)
+{
+ struct rtnl_handle rth;
+
+ if (argc > 0)
+ filter.use = 1;
+ filter.xpinfo.sel.family = preferred_family;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "dir") == 0) {
+ NEXT_ARG();
+ xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
+
+ filter.dir_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "sel") == 0) {
+ NEXT_ARG();
+ xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = filter.xpinfo.sel.family;
+
+ } else if (strcmp(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&filter.xpinfo.index, *argv, 0))
+ invarg("\"INDEX\" is invalid", *argv);
+
+ filter.index_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "action") == 0) {
+ NEXT_ARG();
+ if (strcmp(*argv, "allow") == 0)
+ filter.xpinfo.action = XFRM_POLICY_ALLOW;
+ else if (strcmp(*argv, "block") == 0)
+ filter.xpinfo.action = XFRM_POLICY_BLOCK;
+ else
+ invarg("\"action\" value is invalid\n", *argv);
+
+ filter.action_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "priority") == 0) {
+ NEXT_ARG();
+ if (get_u32(&filter.xpinfo.priority, *argv, 0))
+ invarg("\"PRIORITY\" is invalid", *argv);
+
+ filter.priority_mask = XFRM_FILTER_MASK_FULL;
+
+ } else
+ invarg("unknown", *argv);
+
+ argc--; argv++;
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (flush) {
+ struct xfrm_buffer xb;
+ char buf[NLMSG_FLUSH_BUF_SIZE];
+ int i;
+
+ xb.buf = buf;
+ xb.size = sizeof(buf);
+ xb.rth = &rth;
+
+ for (i = 0; ; i++) {
+ xb.offset = 0;
+ xb.nlmsg_count = 0;
+
+ if (show_stats > 1)
+ fprintf(stderr, "Flush round = %d\n", i);
+
+ if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb, NULL, NULL) < 0) {
+ fprintf(stderr, "Flush terminated\n");
+ exit(1);
+ }
+ if (xb.nlmsg_count == 0) {
+ if (show_stats > 1)
+ fprintf(stderr, "Flush completed\n");
+ break;
+ }
+
+ if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
+ perror("Failed to send flush request\n");
+ exit(1);
+ }
+ if (show_stats > 1)
+ fprintf(stderr, "Flushed nlmsg count = %d\n", xb.nlmsg_count);
+
+ xb.offset = 0;
+ xb.nlmsg_count = 0;
+ }
+ } else {
+ if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout, NULL, NULL) < 0) {
+ fprintf(stderr, "Dump terminated\n");
+ exit(1);
+ }
+ }
+
+ rtnl_close(&rth);
+
+ exit(0);
+}
+
+int do_xfrm_policy(int argc, char **argv)
+{
+ if (argc < 1)
+ return xfrm_policy_list_or_flush(0, NULL, 0);
+
+ if (matches(*argv, "add") == 0)
+ return xfrm_policy_modify(XFRM_MSG_NEWPOLICY, 0,
+ argc-1, argv+1);
+ if (matches(*argv, "update") == 0)
+ return xfrm_policy_modify(XFRM_MSG_UPDPOLICY, 0,
+ argc-1, argv+1);
+ if (matches(*argv, "delete") == 0 || matches(*argv, "del") == 0)
+ return xfrm_policy_delete(argc-1, argv+1);
+ if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+ || matches(*argv, "lst") == 0)
+ return xfrm_policy_list_or_flush(argc-1, argv+1, 0);
+ if (matches(*argv, "get") == 0)
+ return xfrm_policy_get(argc-1, argv+1);
+ if (matches(*argv, "flush") == 0)
+ return xfrm_policy_list_or_flush(argc-1, argv+1, 1);
+ if (matches(*argv, "help") == 0)
+ usage();
+ fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm policy help\".\n", *argv);
+ exit(-1);
+}
diff --git a/ip/xfrm_state.c b/ip/xfrm_state.c
index e69de29..9ea6257 100644
--- a/ip/xfrm_state.c
+++ b/ip/xfrm_state.c
@@ -0,0 +1,636 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * based on iproute.c
+ */
+/*
+ * Authors:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+#include "xfrm.h"
+#include "ip_common.h"
+
+//#define NLMSG_FLUSH_BUF_SIZE (4096-512)
+#define NLMSG_FLUSH_BUF_SIZE 8192
+
+/*
+ * Receiving buffer defines:
+ * nlmsg
+ * data = struct xfrm_usersa_info
+ * rtattr
+ * rtattr
+ * ... (max count of rtattr is XFRM_MAX_DEPTH)
+ *
+ * each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
+ */
+#define NLMSG_BUF_SIZE 4096
+#define RTA_BUF_SIZE 2048
+#define XFRM_ALGO_KEY_BUF_SIZE 512
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n");
+ fprintf(stderr, " [ reqid REQID ] [ FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ]\n");
+
+ fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
+ fprintf(stderr, "Usage: ip xfrm state { flush | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
+ fprintf(stderr, " [ FLAG_LIST ]\n");
+
+ fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
+ fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
+ //fprintf(stderr, "SPI - security parameter index(default=0)\n");
+
+ fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
+ //fprintf(stderr, "REQID - number(default=0)\n");
+
+ fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] [ flag FLAG ]\n");
+ fprintf(stderr, "FLAG := [ noecn ]\n");
+
+ fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ algo ALGO ]\n");
+ fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY\n");
+ fprintf(stderr, "ALGO_TYPE := [ E | A | C ]\n");
+ //fprintf(stderr, "ALGO_NAME - algorithm name\n");
+ //fprintf(stderr, "ALGO_KEY - algorithm key\n");
+
+ fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
+
+ fprintf(stderr, "UPSPEC := proto PROTO [ sport PORT ] [ dport PORT ]\n");
+
+ //fprintf(stderr, "DEV - device name(default=none)\n");
+ fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
+ fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
+ fprintf(stderr, " [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
+ exit(-1);
+}
+
+static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
+ char *name, char *key, int max)
+{
+ int len;
+
+#if 1
+ /* XXX: verifying both name and key is required! */
+ fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
+#endif
+
+ strncpy(alg->alg_name, name, sizeof(alg->alg_name));
+
+ if (strncmp(key, "0x", 2) == 0) {
+ /*
+ * XXX: fix me!!
+ */
+ __u64 val = 0;
+ char *p = (char *)&val;
+
+ if (get_u64(&val, key, 16))
+ invarg("\"ALGOKEY\" is invalid", key);
+
+ len = (strlen(key) - 2) / 2;
+ if (len > sizeof(val))
+ invarg("\"ALGOKEY\" is invalid: too large", key);
+
+ if (len > 0) {
+ int index = sizeof(val) - len;
+ if (len > max)
+ invarg("\"ALGOKEY\" makes buffer overflow\n", key);
+
+ memcpy(alg->alg_key, &p[index], len);
+ }
+
+ } else {
+ len = strlen(key);
+ if (len > 0) {
+ if (len > max)
+ invarg("\"ALGOKEY\" makes buffer overflow\n", key);
+
+ strncpy(alg->alg_key, key, len);
+ }
+ }
+
+ alg->alg_key_len = len * 8;
+
+ return 0;
+}
+
+static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+
+ if (strcmp(*argv, "noecn") == 0)
+ *flags |= XFRM_STATE_NOECN;
+ else
+ invarg("\"FLAG\" is invalid", *argv);
+
+ filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_usersa_info xsinfo;
+ char buf[RTA_BUF_SIZE];
+ } req;
+ char *idp = NULL;
+ char *ealgop = NULL;
+ char *aalgop = NULL;
+ char *calgop = NULL;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
+ req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+ req.n.nlmsg_type = cmd;
+ req.xsinfo.family = preferred_family;
+
+ req.xsinfo.lft.soft_byte_limit = XFRM_INF;
+ req.xsinfo.lft.hard_byte_limit = XFRM_INF;
+ req.xsinfo.lft.soft_packet_limit = XFRM_INF;
+ req.xsinfo.lft.hard_packet_limit = XFRM_INF;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "algo") == 0) {
+ struct {
+ struct xfrm_algo alg;
+ char buf[XFRM_ALGO_KEY_BUF_SIZE];
+ } alg;
+ int len;
+ enum xfrm_attr_type_t type;
+ char *name;
+ char *key;
+
+ NEXT_ARG();
+
+ if (strcmp(*argv, "E") == 0) {
+ if (ealgop)
+ duparg("ALGOTYPE", *argv);
+ ealgop = *argv;
+ type = XFRMA_ALG_CRYPT;
+ } else if (strcmp(*argv, "A") == 0) {
+ if (aalgop)
+ duparg("ALGOTYPE", *argv);
+ aalgop = *argv;
+ type = XFRMA_ALG_AUTH;
+
+ } else if (strcmp(*argv, "C") == 0) {
+ if (calgop)
+ duparg("ALGOTYPE", *argv);
+ calgop = *argv;
+ type = XFRMA_ALG_COMP;
+ } else
+ invarg("\"ALGOTYPE\" is invalid\n", *argv);
+
+ if (!NEXT_ARG_OK())
+ missarg("ALGONAME");
+ NEXT_ARG();
+ name = *argv;
+
+ if (!NEXT_ARG_OK())
+ missarg("ALGOKEY");
+ NEXT_ARG();
+ key = *argv;
+
+ memset(&alg, 0, sizeof(alg));
+
+ xfrm_algo_parse((void *)&alg, type, name, key, sizeof(alg.buf));
+ len = sizeof(struct xfrm_algo) + alg.alg.alg_key_len;
+
+ addattr_l(&req.n, sizeof(req.buf), type,
+ (void *)&alg, len);
+
+ } else if (strcmp(*argv, "mode") == 0) {
+ NEXT_ARG();
+ xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
+ } else if (strcmp(*argv, "reqid") == 0) {
+ NEXT_ARG();
+ xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
+ } else if (strcmp(*argv, "flag") == 0) {
+ NEXT_ARG();
+ xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
+ } else if (strcmp(*argv, "sel") == 0) {
+ NEXT_ARG();
+ xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
+
+ } else if (strcmp(*argv, "limit") == 0) {
+ NEXT_ARG();
+ xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
+ } else {
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
+ &req.xsinfo.family, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = req.xsinfo.family;
+ }
+ argc--; argv++;
+ }
+
+ if (!idp) {
+ fprintf(stderr, "Not enough information: \"ID\" is required\n");
+ exit(1);
+ }
+
+ if (ealgop || aalgop || calgop) {
+ if (req.xsinfo.id.proto != IPPROTO_ESP &&
+ req.xsinfo.id.proto != IPPROTO_AH &&
+ req.xsinfo.id.proto != IPPROTO_COMP) {
+ fprintf(stderr, "\"ALGO\" is invalid with proto=%d\n", req.xsinfo.id.proto);
+ exit(1);
+ }
+ } else {
+ if (req.xsinfo.id.proto == IPPROTO_ESP ||
+ req.xsinfo.id.proto == IPPROTO_AH ||
+ req.xsinfo.id.proto == IPPROTO_COMP) {
+ fprintf(stderr, "\"ALGO\" is required with proto=%d\n", req.xsinfo.id.proto);
+ exit (1);
+ }
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (req.xsinfo.family == AF_UNSPEC)
+ req.xsinfo.family = AF_INET;
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+ exit(2);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
+{
+ if (!filter.use)
+ return 1;
+
+ if (filter.id_src_mask)
+ if (memcmp(&xsinfo->saddr, &filter.xsinfo.saddr,
+ filter.id_src_mask) != 0)
+ return 0;
+ if (filter.id_dst_mask)
+ if (memcmp(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
+ filter.id_dst_mask) != 0)
+ return 0;
+ if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
+ return 0;
+ if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
+ return 0;
+ if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
+ return 0;
+ if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
+ return 0;
+ if (filter.state_flags_mask)
+ if ((xsinfo->flags & filter.xsinfo.flags) == 0)
+ return 0;
+
+ return 1;
+}
+
+int xfrm_state_print(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr * tb[XFRMA_MAX+1];
+ int ntb;
+
+ if (n->nlmsg_type != XFRM_MSG_NEWSA &&
+ n->nlmsg_type != XFRM_MSG_DELSA) {
+ fprintf(stderr, "Not a state: %08x %08x %08x\n",
+ n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+ return 0;
+ }
+
+ len -= NLMSG_LENGTH(sizeof(*xsinfo));
+ if (len < 0) {
+ fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+ return -1;
+ }
+
+ if (!xfrm_state_filter_match(xsinfo))
+ return 0;
+
+ memset(tb, 0, sizeof(tb));
+ ntb = parse_rtattr_byindex(tb, XFRM_MAX_DEPTH, XFRMS_RTA(xsinfo), len);
+
+ if (n->nlmsg_type == XFRM_MSG_DELSA)
+ fprintf(fp, "Deleted ");
+
+ xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
+ xsinfo->reqid, xsinfo->family, fp, NULL);
+
+ if (show_stats > 0) {
+ fprintf(fp, "\t");
+ fprintf(fp, "seq 0x%08u ", xsinfo->seq);
+ fprintf(fp, "replay-window %d ", xsinfo->replay_window);
+ fprintf(fp, "flags ");
+ if (xsinfo->flags & XFRM_STATE_NOECN)
+ fprintf(fp, "noecn ");
+ fprintf(fp, "(0x%s)", strxf_flags(xsinfo->flags));
+
+ fprintf(fp, "\n");
+ }
+
+ xfrm_xfrma_print(tb, ntb, xsinfo->family, fp, "\t");
+
+ if (show_stats > 0) {
+ fprintf(fp, "\tsel:\n");
+ xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, "\t ");
+ }
+
+ if (show_stats > 0) {
+ xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, "\t");
+ xfrm_stats_print(&xsinfo->stats, fp, "\t");
+ }
+
+ return 0;
+}
+
+static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_usersa_id xsid;
+ } req;
+ struct xfrm_id id;
+ char *idp = NULL;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
+ req.xsid.family = preferred_family;
+
+ while (argc > 0) {
+ /*
+ * XXX: Source address is not used and ignore it to follow
+ * XXX: a manner of setkey e.g. in the case of deleting/getting
+ * XXX: message of IPsec SA.
+ */
+ xfrm_address_t ignore_saddr;
+
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ memset(&id, 0, sizeof(id));
+ xfrm_id_parse(&ignore_saddr, &id, &req.xsid.family,
+ &argc, &argv);
+
+ memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
+ req.xsid.spi = id.spi;
+ req.xsid.proto = id.proto;
+
+ argc--; argv++;
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (req.xsid.family == AF_UNSPEC)
+ req.xsid.family = AF_INET;
+
+ if (delete) {
+ if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+ exit(2);
+ } else {
+ char buf[NLMSG_BUF_SIZE];
+ struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
+
+ memset(buf, 0, sizeof(buf));
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
+ exit(2);
+
+ if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
+ fprintf(stderr, "An error :-)\n");
+ exit(1);
+ }
+ }
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+/*
+ * With an existing state of nlmsg, make new nlmsg for deleting the state
+ * and store it to buffer.
+ */
+int xfrm_state_keep(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+ struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
+ struct rtnl_handle *rth = xb->rth;
+ struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct nlmsghdr *new_n;
+ struct xfrm_usersa_id *xsid;
+
+ if (n->nlmsg_type != XFRM_MSG_NEWSA) {
+ fprintf(stderr, "Not a state: %08x %08x %08x\n",
+ n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+ return 0;
+ }
+
+ len -= NLMSG_LENGTH(sizeof(*xsinfo));
+ if (len < 0) {
+ fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+ return -1;
+ }
+
+ if (!xfrm_state_filter_match(xsinfo))
+ return 0;
+
+ if (xb->offset > xb->size) {
+ fprintf(stderr, "Flush buffer overflow\n");
+ return -1;
+ }
+
+ new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
+ new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
+ new_n->nlmsg_flags = NLM_F_REQUEST;
+ new_n->nlmsg_type = XFRM_MSG_DELSA;
+ new_n->nlmsg_seq = ++rth->seq;
+
+ xsid = NLMSG_DATA(new_n);
+ xsid->family = xsinfo->family;
+ memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
+ xsid->spi = xsinfo->id.spi;
+ xsid->proto = xsinfo->id.proto;
+
+ xb->offset += new_n->nlmsg_len;
+ xb->nlmsg_count ++;
+
+ return 0;
+}
+
+static int xfrm_state_list_or_flush(int argc, char **argv, int flush)
+{
+ char *idp = NULL;
+ struct rtnl_handle rth;
+
+ filter.use = 1;
+ filter.xsinfo.family = preferred_family;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "mode") == 0) {
+ NEXT_ARG();
+ xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
+
+ filter.mode_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "reqid") == 0) {
+ NEXT_ARG();
+ xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
+
+ filter.reqid_mask = XFRM_FILTER_MASK_FULL;
+
+ } else if (strcmp(*argv, "flag") == 0) {
+ NEXT_ARG();
+ xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
+
+ filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
+
+ } else {
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ xfrm_id_parse(&filter.xsinfo.saddr,
+ &filter.xsinfo.id,
+ &filter.xsinfo.family, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = filter.xsinfo.family;
+ }
+ argc--; argv++;
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (flush) {
+ struct xfrm_buffer xb;
+ char buf[NLMSG_FLUSH_BUF_SIZE];
+ int i;
+
+ xb.buf = buf;
+ xb.size = sizeof(buf);
+ xb.rth = &rth;
+
+ for (i = 0; ; i++) {
+ xb.offset = 0;
+ xb.nlmsg_count = 0;
+
+ if (show_stats > 1)
+ fprintf(stderr, "Flush round = %d\n", i);
+
+ if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) {
+ fprintf(stderr, "Flush terminated\n");
+ exit(1);
+ }
+ if (xb.nlmsg_count == 0) {
+ if (show_stats > 1)
+ fprintf(stderr, "Flush completed\n");
+ break;
+ }
+
+ if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
+ perror("Failed to send flush request\n");
+ exit(1);
+ }
+ if (show_stats > 1)
+ fprintf(stderr, "Flushed nlmsg count = %d\n", xb.nlmsg_count);
+
+ xb.offset = 0;
+ xb.nlmsg_count = 0;
+ }
+
+ } else {
+ if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) {
+ fprintf(stderr, "Dump terminated\n");
+ exit(1);
+ }
+ }
+
+ rtnl_close(&rth);
+
+ exit(0);
+}
+
+int do_xfrm_state(int argc, char **argv)
+{
+ if (argc < 1)
+ return xfrm_state_list_or_flush(0, NULL, 0);
+
+ if (matches(*argv, "add") == 0)
+ return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
+ argc-1, argv+1);
+ if (matches(*argv, "update") == 0)
+ return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
+ argc-1, argv+1);
+ if (matches(*argv, "delete") == 0 || matches(*argv, "del") == 0)
+ return xfrm_state_get_or_delete(argc-1, argv+1, 1);
+ if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+ || matches(*argv, "lst") == 0)
+ return xfrm_state_list_or_flush(argc-1, argv+1, 0);
+ if (matches(*argv, "get") == 0)
+ return xfrm_state_get_or_delete(argc-1, argv+1, 0);
+ if (matches(*argv, "flush") == 0)
+ return xfrm_state_list_or_flush(argc-1, argv+1, 1);
+ if (matches(*argv, "help") == 0)
+ usage();
+ fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
+ exit(-1);
+}
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 4beeca6..cb67a20 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -30,13 +30,13 @@
close(rth->fd);
}
-int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
+int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol)
{
int addr_len;
memset(rth, 0, sizeof(rth));
- rth->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ rth->fd = socket(AF_NETLINK, SOCK_RAW, protocol);
if (rth->fd < 0) {
perror("Cannot open netlink socket");
return -1;
@@ -67,6 +67,11 @@
return 0;
}
+int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
+{
+ return rtnl_open_byproto(rth, subscriptions, NETLINK_ROUTE);
+}
+
int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
{
struct {
@@ -521,3 +526,16 @@
fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
return 0;
}
+
+int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+{
+ int i = 0;
+ while (RTA_OK(rta, len)) {
+ if (rta->rta_type <= max)
+ tb[i++] = rta;
+ rta = RTA_NEXT(rta,len);
+ }
+ if (len)
+ fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
+ return i;
+}
diff --git a/lib/utils.c b/lib/utils.c
index 7834b7a..739383a 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -58,6 +58,20 @@
return 0;
}
+int get_u64(__u64 *val, const char *arg, int base)
+{
+ unsigned long long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoull(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
+ return -1;
+ *val = res;
+ return 0;
+}
+
int get_u32(__u32 *val, const char *arg, int base)
{
unsigned long res;
@@ -186,7 +200,7 @@
return 0;
}
-int get_prefix_1(inet_prefix *dst, char *arg, int family)
+int get_prefix_1(inet_prefix *dst, const char *arg, int family)
{
int err;
unsigned plen;
@@ -235,7 +249,7 @@
return err;
}
-int get_addr(inet_prefix *dst, char *arg, int family)
+int get_addr(inet_prefix *dst, const char *arg, int family)
{
if (family == AF_PACKET) {
fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
@@ -248,7 +262,7 @@
return 0;
}
-int get_prefix(inet_prefix *dst, char *arg, int family)
+int get_prefix(inet_prefix *dst, const char *arg, int family)
{
if (family == AF_PACKET) {
fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
@@ -261,7 +275,7 @@
return 0;
}
-__u32 get_addr32(char *name)
+__u32 get_addr32(const char *name)
{
inet_prefix addr;
if (get_addr_1(&addr, name, AF_INET)) {
@@ -277,6 +291,12 @@
exit(-1);
}
+void missarg(const char *key)
+{
+ fprintf(stderr, "Error: argument \"%s\" is required\n", key);
+ exit(-1);
+}
+
void invarg(const char *msg, const char *arg)
{
fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
@@ -344,7 +364,7 @@
if (getenv("PROC_NET_PSCHED")) {
snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
- } else if (getenv("PROC_ROOT")) {
+ } else if (getenv("PROC_ROOT")) {
snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
} else {
strcpy(name, "/proc/net/psched");
@@ -427,7 +447,7 @@
sethostent(1);
fflush(stdout);
- if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
+ if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
n->name = strdup(h_ent->h_name);
/* Even if we fail, "negative" entry is remembered. */
@@ -436,7 +456,7 @@
#endif
-const char *format_host(int af, int len, const void *addr,
+const char *format_host(int af, int len, const void *addr,
char *buf, int buflen)
{
#ifdef RESOLVE_HOSTNAMES