+/* $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_DELETEALL_BUF_SIZE (4096-512)
+#define NLMSG_DELETEALL_BUF_SIZE 8192
+
+/*
+ * Receiving buffer defines:
+ * nlmsg
+ * data = struct xfrm_usersa_info
+ * rtattr
+ * rtattr
+ * ... (max count of rtattr is XFRM_MAX+1
+ *
+ * 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
+#define CTX_BUF_SIZE 256
+
+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, " [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n");
+ fprintf(stderr, " [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n");
+ fprintf(stderr, " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n");
+ fprintf(stderr, " [ coa ADDR[/PLEN] ] [ ctx CTX ]\n");
+ fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n");
+ fprintf(stderr, " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n");
+ fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n");
+ fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
+ fprintf(stderr, " [ flag FLAG-LIST ]\n");
+ fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n");
+ fprintf(stderr, "Usage: ip xfrm state count\n");
+ fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n");
+ fprintf(stderr, "XFRM-PROTO := ");
+ fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
+ fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
+ fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
+ fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
+ fprintf(stderr, "%s\n", strxf_xfrmproto(IPPROTO_DSTOPTS));
+ fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] ALGO\n");
+ fprintf(stderr, "ALGO := { ");
+ fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT));
+ fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH));
+ fprintf(stderr, "%s", strxf_algotype(XFRMA_ALG_COMP));
+ fprintf(stderr, " } ALGO-NAME ALGO-KEY |\n");
+ fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AEAD));
+ fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-ICV-LEN |\n");
+ fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC));
+ fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-TRUNC-LEN\n");
+ fprintf(stderr, "MODE := transport | tunnel | ro | in_trigger | beet\n");
+ fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
+ fprintf(stderr, "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4\n");
+ fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n");
+ fprintf(stderr, "UPSPEC := proto { { ");
+ fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP));
+ fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP));
+ fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP));
+ fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP));
+ fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n");
+ fprintf(stderr, " { ");
+ fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP));
+ fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6));
+ fprintf(stderr, "%s", strxf_proto(IPPROTO_MH));
+ fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n");
+ fprintf(stderr, " %s", strxf_proto(IPPROTO_GRE));
+ fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\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");
+ fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n");
+
+ exit(-1);
+}
+
+static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
+ char *name, char *key, char *buf, int max)
+{
+ int len;
+ int slen = strlen(key);
+
+#if 0
+ /* XXX: verifying both name and key is required! */
+ fprintf(stderr, "warning: ALGO-NAME/ALGO-KEY will send to kernel promiscuously! (verifying them isn't implemented yet)\n");
+#endif
+
+ strncpy(alg->alg_name, name, sizeof(alg->alg_name));
+
+ if (slen > 2 && strncmp(key, "0x", 2) == 0) {
+ /* split two chars "0x" from the top */
+ char *p = key + 2;
+ int plen = slen - 2;
+ int i;
+ int j;
+
+ /* Converting hexadecimal numbered string into real key;
+ * Convert each two chars into one char(value). If number
+ * of the length is odd, add zero on the top for rounding.
+ */
+
+ /* calculate length of the converted values(real key) */
+ len = (plen + 1) / 2;
+ if (len > max)
+ invarg("\"ALGO-KEY\" makes buffer overflow\n", key);
+
+ for (i = - (plen % 2), j = 0; j < len; i += 2, j++) {
+ char vbuf[3];
+ __u8 val;
+
+ vbuf[0] = i >= 0 ? p[i] : '0';
+ vbuf[1] = p[i + 1];
+ vbuf[2] = '\0';
+
+ if (get_u8(&val, vbuf, 16))
+ invarg("\"ALGO-KEY\" is invalid", key);
+
+ buf[j] = val;
+ }
+ } else {
+ len = slen;
+ if (len > 0) {
+ if (len > max)
+ invarg("\"ALGO-KEY\" makes buffer overflow\n", key);
+
+ strncpy(buf, key, len);
+ }
+ }
+
+ alg->alg_key_len = len * 8;
+
+ return 0;
+}
+
+static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+
+ if (get_u32(seq, *argv, 0))
+ invarg("\"SEQ\" is invalid", *argv);
+
+ *seq = htonl(*seq);
+
+ *argcp = argc;
+ *argvp = argv;
+
+ return 0;
+}
+
+static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ int len = strlen(*argv);
+
+ if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
+ __u8 val = 0;
+
+ if (get_u8(&val, *argv, 16))
+ invarg("\"FLAG\" is invalid", *argv);
+ *flags = val;
+ } else {
+ while (1) {
+ if (strcmp(*argv, "noecn") == 0)
+ *flags |= XFRM_STATE_NOECN;
+ else if (strcmp(*argv, "decap-dscp") == 0)
+ *flags |= XFRM_STATE_DECAP_DSCP;
+ else if (strcmp(*argv, "nopmtudisc") == 0)
+ *flags |= XFRM_STATE_NOPMTUDISC;
+ else if (strcmp(*argv, "wildrecv") == 0)
+ *flags |= XFRM_STATE_WILDRECV;
+ else if (strcmp(*argv, "icmp") == 0)
+ *flags |= XFRM_STATE_ICMP;
+ else if (strcmp(*argv, "af-unspec") == 0)
+ *flags |= XFRM_STATE_AF_UNSPEC;
+ else if (strcmp(*argv, "align4") == 0)
+ *flags |= XFRM_STATE_ALIGN4;
+ else {
+ PREV_ARG(); /* back track */
+ break;
+ }
+
+ if (!NEXT_ARG_OK())
+ break;
+ NEXT_ARG();
+ }
+ }
+
+ *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;
+ struct xfrm_replay_state replay;
+ char *idp = NULL;
+ char *aeadop = NULL;
+ char *ealgop = NULL;
+ char *aalgop = NULL;
+ char *calgop = NULL;
+ char *coap = NULL;
+ char *sctxp = NULL;
+ struct xfrm_mark mark = {0, 0};
+ struct {
+ struct xfrm_user_sec_ctx sctx;
+ char str[CTX_BUF_SIZE];
+ } ctx;
+
+ memset(&req, 0, sizeof(req));
+ memset(&replay, 0, sizeof(replay));
+ memset(&ctx, 0, sizeof(ctx));
+
+ 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, "mode") == 0) {
+ NEXT_ARG();
+ xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
+ } else if (strcmp(*argv, "mark") == 0) {
+ xfrm_parse_mark(&mark, &argc, &argv);
+ } else if (strcmp(*argv, "reqid") == 0) {
+ NEXT_ARG();
+ xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
+ } else if (strcmp(*argv, "seq") == 0) {
+ NEXT_ARG();
+ xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
+ } else if (strcmp(*argv, "replay-window") == 0) {
+ NEXT_ARG();
+ if (get_u8(&req.xsinfo.replay_window, *argv, 0))
+ invarg("\"replay-window\" value is invalid", *argv);
+ } else if (strcmp(*argv, "replay-seq") == 0) {
+ NEXT_ARG();
+ if (get_u32(&replay.seq, *argv, 0))
+ invarg("\"replay-seq\" value is invalid", *argv);
+ } else if (strcmp(*argv, "replay-oseq") == 0) {
+ NEXT_ARG();
+ if (get_u32(&replay.oseq, *argv, 0))
+ invarg("\"replay-oseq\" value is invalid", *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 (strcmp(*argv, "encap") == 0) {
+ struct xfrm_encap_tmpl encap;
+ inet_prefix oa;
+ NEXT_ARG();
+ xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
+ NEXT_ARG();
+ if (get_u16(&encap.encap_sport, *argv, 0))
+ invarg("\"encap\" sport value is invalid", *argv);
+ encap.encap_sport = htons(encap.encap_sport);
+ NEXT_ARG();
+ if (get_u16(&encap.encap_dport, *argv, 0))
+ invarg("\"encap\" dport value is invalid", *argv);
+ encap.encap_dport = htons(encap.encap_dport);
+ NEXT_ARG();
+ get_addr(&oa, *argv, AF_UNSPEC);
+ memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
+ addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
+ (void *)&encap, sizeof(encap));
+ } else if (strcmp(*argv, "coa") == 0) {
+ inet_prefix coa;
+ xfrm_address_t xcoa;
+
+ if (coap)
+ duparg("coa", *argv);
+ coap = *argv;
+
+ NEXT_ARG();
+
+ get_prefix(&coa, *argv, preferred_family);
+ if (coa.family == AF_UNSPEC)
+ invarg("\"coa\" address family is AF_UNSPEC", *argv);
+ if (coa.bytelen > sizeof(xcoa))
+ invarg("\"coa\" address length is too large", *argv);
+
+ memset(&xcoa, 0, sizeof(xcoa));
+ memcpy(&xcoa, &coa.data, coa.bytelen);
+
+ addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
+ (void *)&xcoa, sizeof(xcoa));
+ } else if (strcmp(*argv, "ctx") == 0) {
+ char *context;
+
+ if (sctxp)
+ duparg("ctx", *argv);
+ sctxp = *argv;
+
+ NEXT_ARG();
+ context = *argv;
+
+ xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
+ addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
+ (void *)&ctx, ctx.sctx.len);
+ } else {
+ /* try to assume ALGO */
+ int type = xfrm_algotype_getbyname(*argv);
+ switch (type) {
+ case XFRMA_ALG_AEAD:
+ case XFRMA_ALG_CRYPT:
+ case XFRMA_ALG_AUTH:
+ case XFRMA_ALG_AUTH_TRUNC:
+ case XFRMA_ALG_COMP:
+ {
+ /* ALGO */
+ struct {
+ union {
+ struct xfrm_algo alg;
+ struct xfrm_algo_aead aead;
+ struct xfrm_algo_auth auth;
+ } u;
+ char buf[XFRM_ALGO_KEY_BUF_SIZE];
+ } alg = {};
+ int len;
+ __u32 icvlen, trunclen;
+ char *name;
+ char *key;
+ char *buf;
+
+ switch (type) {
+ case XFRMA_ALG_AEAD:
+ if (aeadop)
+ duparg("ALGO-TYPE", *argv);
+ aeadop = *argv;
+ break;
+ case XFRMA_ALG_CRYPT:
+ if (ealgop)
+ duparg("ALGO-TYPE", *argv);
+ ealgop = *argv;
+ break;
+ case XFRMA_ALG_AUTH:
+ case XFRMA_ALG_AUTH_TRUNC:
+ if (aalgop)
+ duparg("ALGO-TYPE", *argv);
+ aalgop = *argv;
+ break;
+ case XFRMA_ALG_COMP:
+ if (calgop)
+ duparg("ALGO-TYPE", *argv);
+ calgop = *argv;
+ break;
+ default:
+ /* not reached */
+ invarg("\"ALGO-TYPE\" is invalid\n", *argv);
+ }
+
+ if (!NEXT_ARG_OK())
+ missarg("ALGO-NAME");
+ NEXT_ARG();
+ name = *argv;
+
+ if (!NEXT_ARG_OK())
+ missarg("ALGO-KEY");
+ NEXT_ARG();
+ key = *argv;
+
+ buf = alg.u.alg.alg_key;
+ len = sizeof(alg.u.alg);
+
+ switch (type) {
+ case XFRMA_ALG_AEAD:
+ if (!NEXT_ARG_OK())
+ missarg("ALGO-ICV-LEN");
+ NEXT_ARG();
+ if (get_u32(&icvlen, *argv, 0))
+ invarg("\"aead\" ICV length is invalid",
+ *argv);
+ alg.u.aead.alg_icv_len = icvlen;
+
+ buf = alg.u.aead.alg_key;
+ len = sizeof(alg.u.aead);
+ break;
+ case XFRMA_ALG_AUTH_TRUNC:
+ if (!NEXT_ARG_OK())
+ missarg("ALGO-TRUNC-LEN");
+ NEXT_ARG();
+ if (get_u32(&trunclen, *argv, 0))
+ invarg("\"auth\" trunc length is invalid",
+ *argv);
+ alg.u.auth.alg_trunc_len = trunclen;
+
+ buf = alg.u.auth.alg_key;
+ len = sizeof(alg.u.auth);
+ break;
+ }
+
+ xfrm_algo_parse((void *)&alg, type, name, key,
+ buf, sizeof(alg.buf));
+ len += alg.u.alg.alg_key_len;
+
+ addattr_l(&req.n, sizeof(req.buf), type,
+ (void *)&alg, len);
+ break;
+ }
+ default:
+ /* try to assume ID */
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
+ &req.xsinfo.family, 0, &argc, &argv);
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = req.xsinfo.family;
+ }
+ }
+ argc--; argv++;
+ }
+
+ if (replay.seq || replay.oseq)
+ addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
+ (void *)&replay, sizeof(replay));
+
+ if (!idp) {
+ fprintf(stderr, "Not enough information: \"ID\" is required\n");
+ exit(1);
+ }
+
+ if (mark.m & mark.v) {
+ int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
+ (void *)&mark, sizeof(mark));
+ if (r < 0) {
+ fprintf(stderr, "XFRMA_MARK failed\n");
+ exit(1);
+ }
+ }
+
+ switch (req.xsinfo.mode) {
+ case XFRM_MODE_TRANSPORT:
+ case XFRM_MODE_TUNNEL:
+ if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit(1);
+ }
+ break;
+ case XFRM_MODE_ROUTEOPTIMIZATION:
+ case XFRM_MODE_IN_TRIGGER:
+ if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit(1);
+ }
+ if (req.xsinfo.id.spi != 0) {
+ fprintf(stderr, "\"spi\" must be 0 with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit(1);
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (aeadop || ealgop || aalgop || calgop) {
+ if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit(1);
+ }
+ } else {
+ if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"ALGO\" is required with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit (1);
+ }
+ }
+
+ if (coap) {
+ if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"coa\" is invalid with proto=%s\n",
+ strxf_xfrmproto(req.xsinfo.id.proto));
+ exit(1);
+ }
+ } else {
+ if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
+ fprintf(stderr, "\"coa\" is required with proto=%s\n",
+ strxf_xfrmproto(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) < 0)
+ exit(2);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+static int xfrm_state_allocspi(int argc, char **argv)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_userspi_info xspi;
+ char buf[RTA_BUF_SIZE];
+ } req;
+ char *idp = NULL;
+ char *minp = NULL;
+ char *maxp = NULL;
+ struct xfrm_mark mark = {0, 0};
+ char res_buf[NLMSG_BUF_SIZE];
+ struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
+
+ memset(res_buf, 0, sizeof(res_buf));
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = XFRM_MSG_ALLOCSPI;
+ req.xspi.info.family = preferred_family;
+
+#if 0
+ 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;
+#endif
+
+ while (argc > 0) {
+ if (strcmp(*argv, "mode") == 0) {
+ NEXT_ARG();
+ xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
+ } else if (strcmp(*argv, "mark") == 0) {
+ xfrm_parse_mark(&mark, &argc, &argv);
+ } else if (strcmp(*argv, "reqid") == 0) {
+ NEXT_ARG();
+ xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
+ } else if (strcmp(*argv, "seq") == 0) {
+ NEXT_ARG();
+ xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
+ } else if (strcmp(*argv, "min") == 0) {
+ if (minp)
+ duparg("min", *argv);
+ minp = *argv;
+
+ NEXT_ARG();
+
+ if (get_u32(&req.xspi.min, *argv, 0))
+ invarg("\"min\" value is invalid", *argv);
+ } else if (strcmp(*argv, "max") == 0) {
+ if (maxp)
+ duparg("max", *argv);
+ maxp = *argv;
+
+ NEXT_ARG();
+
+ if (get_u32(&req.xspi.max, *argv, 0))
+ invarg("\"max\" value is invalid", *argv);
+ } else {
+ /* try to assume ID */
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
+ &req.xspi.info.family, 0, &argc, &argv);
+ if (req.xspi.info.id.spi) {
+ fprintf(stderr, "\"SPI\" must be zero\n");
+ exit(1);
+ }
+ if (preferred_family == AF_UNSPEC)
+ preferred_family = req.xspi.info.family;
+ }
+ argc--; argv++;
+ }
+
+ if (!idp) {
+ fprintf(stderr, "Not enough information: \"ID\" is required\n");
+ exit(1);
+ }
+
+ if (minp) {
+ if (!maxp) {
+ fprintf(stderr, "\"max\" is missing\n");
+ exit(1);
+ }
+ if (req.xspi.min > req.xspi.max) {
+ fprintf(stderr, "\"min\" value is larger than \"max\" value\n");
+ exit(1);
+ }
+ } else {
+ if (maxp) {
+ fprintf(stderr, "\"min\" is missing\n");
+ exit(1);
+ }
+
+ /* XXX: Default value defined in PF_KEY;
+ * See kernel's net/key/af_key.c(pfkey_getspi).
+ */
+ req.xspi.min = 0x100;
+ req.xspi.max = 0x0fffffff;
+
+ /* XXX: IPCOMP spi is 16-bits;
+ * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
+ */
+ if (req.xspi.info.id.proto == IPPROTO_COMP)
+ req.xspi.max = 0xffff;
+ }
+
+ if (mark.m & mark.v) {
+ int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
+ (void *)&mark, sizeof(mark));
+ if (r < 0) {
+ fprintf(stderr, "XFRMA_MARK failed\n");
+ exit(1);
+ }
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (req.xspi.info.family == AF_UNSPEC)
+ req.xspi.info.family = AF_INET;
+
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, res_n) < 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;
+}
+
+static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
+{
+ if (!filter.use)
+ return 1;
+
+ if (filter.id_src_mask)
+ if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
+ filter.id_src_mask))
+ return 0;
+ if (filter.id_dst_mask)
+ if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
+ filter.id_dst_mask))
+ 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(const struct sockaddr_nl *who, struct nlmsghdr *n,
+ void *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct rtattr * tb[XFRMA_MAX+1];
+ struct rtattr * rta;
+ struct xfrm_usersa_info *xsinfo = NULL;
+ struct xfrm_user_expire *xexp = NULL;
+ struct xfrm_usersa_id *xsid = NULL;
+ int len = n->nlmsg_len;
+
+ if (n->nlmsg_type != XFRM_MSG_NEWSA &&
+ n->nlmsg_type != XFRM_MSG_DELSA &&
+ n->nlmsg_type != XFRM_MSG_UPDSA &&
+ n->nlmsg_type != XFRM_MSG_EXPIRE) {
+ fprintf(stderr, "Not a state: %08x %08x %08x\n",
+ n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+ return 0;
+ }
+
+ if (n->nlmsg_type == XFRM_MSG_DELSA) {
+ /* Dont blame me for this .. Herbert made me do it */
+ xsid = NLMSG_DATA(n);
+ len -= NLMSG_SPACE(sizeof(*xsid));
+ } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
+ xexp = NLMSG_DATA(n);
+ xsinfo = &xexp->state;
+ len -= NLMSG_SPACE(sizeof(*xexp));
+ } else {
+ xexp = NULL;
+ xsinfo = NLMSG_DATA(n);
+ len -= NLMSG_SPACE(sizeof(*xsinfo));
+ }
+
+ if (len < 0) {
+ fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+ return -1;
+ }
+
+ if (xsinfo && !xfrm_state_filter_match(xsinfo))
+ return 0;
+
+ if (n->nlmsg_type == XFRM_MSG_DELSA)
+ fprintf(fp, "Deleted ");
+ else if (n->nlmsg_type == XFRM_MSG_UPDSA)
+ fprintf(fp, "Updated ");
+ else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
+ fprintf(fp, "Expired ");
+
+ if (n->nlmsg_type == XFRM_MSG_DELSA)
+ rta = XFRMSID_RTA(xsid);
+ else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
+ rta = XFRMEXP_RTA(xexp);
+ else
+ rta = XFRMS_RTA(xsinfo);
+
+ parse_rtattr(tb, XFRMA_MAX, rta, len);
+
+ if (n->nlmsg_type == XFRM_MSG_DELSA) {
+ //xfrm_policy_id_print();
+
+ if (!tb[XFRMA_SA]) {
+ fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
+ return -1;
+ }
+ if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
+ fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
+ return -1;
+ }
+ xsinfo = RTA_DATA(tb[XFRMA_SA]);
+ }
+
+ xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
+
+ if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
+ fprintf(fp, "\t");
+ fprintf(fp, "hard %u", xexp->hard);
+ fprintf(fp, "%s", _SL_);
+ }
+
+ if (oneline)
+ fprintf(fp, "\n");
+ fflush(fp);
+
+ 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;
+ char buf[RTA_BUF_SIZE];
+ } req;
+ struct xfrm_id id;
+ char *idp = NULL;
+ struct xfrm_mark mark = {0, 0};
+
+ 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) {
+ xfrm_address_t saddr;
+
+ if (strcmp(*argv, "mark") == 0) {
+ xfrm_parse_mark(&mark, &argc, &argv);
+ } else {
+ if (idp)
+ invarg("unknown", *argv);
+ idp = *argv;
+
+ /* ID */
+ memset(&id, 0, sizeof(id));
+ memset(&saddr, 0, sizeof(saddr));
+ xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
+ &argc, &argv);
+
+ memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
+ req.xsid.spi = id.spi;
+ req.xsid.proto = id.proto;
+
+ addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
+ (void *)&saddr, sizeof(saddr));
+ }
+
+ argc--; argv++;
+ }
+
+ if (mark.m & mark.v) {
+ int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
+ (void *)&mark, sizeof(mark));
+ if (r < 0) {
+ fprintf(stderr, "XFRMA_MARK failed\n");
+ exit(1);
+ }
+ }
+
+ 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) < 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) < 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.
+ */
+static int xfrm_state_keep(const 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, "State 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;
+
+ addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
+ sizeof(xsid->daddr));
+
+ xb->offset += new_n->nlmsg_len;
+ xb->nlmsg_count ++;
+
+ return 0;
+}
+
+static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
+{
+ char *idp = NULL;
+ struct rtnl_handle rth;
+
+ if(argc > 0)
+ 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, 1, &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 (deleteall) {
+ struct xfrm_buffer xb;
+ char buf[NLMSG_DELETEALL_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, "Delete-all 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) < 0) {
+ fprintf(stderr, "Delete-all terminated\n");
+ exit(1);
+ }
+ if (xb.nlmsg_count == 0) {
+ if (show_stats > 1)
+ fprintf(stderr, "Delete-all completed\n");
+ break;
+ }
+
+ if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
+ perror("Failed to send delete-all request\n");
+ exit(1);
+ }
+ if (show_stats > 1)
+ fprintf(stderr, "Delete-all 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) < 0) {
+ fprintf(stderr, "Dump terminated\n");
+ exit(1);
+ }
+ }
+
+ rtnl_close(&rth);
+
+ exit(0);
+}
+
+int print_sadinfo(struct nlmsghdr *n, void *arg)
+{
+ FILE *fp = (FILE*)arg;
+ __u32 *f = NLMSG_DATA(n);
+ struct rtattr *tb[XFRMA_SAD_MAX+1];
+ struct rtattr *rta;
+ __u32 *cnt;
+
+ int len = n->nlmsg_len;
+
+ len -= NLMSG_LENGTH(sizeof(__u32));
+ if (len < 0) {
+ fprintf(stderr, "SADinfo: Wrong len %d\n", len);
+ return -1;
+ }
+
+ rta = XFRMSAPD_RTA(f);
+ parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
+
+ if (tb[XFRMA_SAD_CNT]) {
+ fprintf(fp,"\t SAD");
+ cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
+ fprintf(fp," count %d", *cnt);
+ } else {
+ fprintf(fp,"BAD SAD info returned\n");
+ return -1;
+ }
+
+ if (show_stats) {
+ if (tb[XFRMA_SAD_HINFO]) {
+ struct xfrmu_sadhinfo *si;
+
+ if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
+ fprintf(fp,"BAD SAD length returned\n");
+ return -1;
+ }
+
+ si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
+ fprintf(fp," (buckets ");
+ fprintf(fp,"count %d", si->sadhcnt);
+ fprintf(fp," Max %d", si->sadhmcnt);
+ fprintf(fp,")");
+ }
+ }
+ fprintf(fp,"\n");
+
+ return 0;
+}
+
+static int xfrm_sad_getinfo(int argc, char **argv)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ __u32 flags;
+ char ans[64];
+ } req;
+
+ memset(&req, 0, sizeof(req));
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = XFRM_MSG_GETSADINFO;
+ req.flags = 0XFFFFFFFF;
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
+ exit(2);
+
+ print_sadinfo(&req.n, (void*)stdout);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+static int xfrm_state_flush(int argc, char **argv)
+{
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct xfrm_usersa_flush xsf;
+ } req;
+ char *protop = NULL;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = XFRM_MSG_FLUSHSA;
+ req.xsf.proto = 0;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "proto") == 0) {
+ int ret;
+
+ if (protop)
+ duparg("proto", *argv);
+ protop = *argv;
+
+ NEXT_ARG();
+
+ ret = xfrm_xfrmproto_getbyname(*argv);
+ if (ret < 0)
+ invarg("\"XFRM-PROTO\" is invalid", *argv);
+
+ req.xsf.proto = (__u8)ret;
+ } else
+ invarg("unknown", *argv);
+
+ argc--; argv++;
+ }
+
+ if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+ exit(1);
+
+ if (show_stats > 1)
+ fprintf(stderr, "Flush state proto=%s\n",
+ strxf_xfrmproto(req.xsf.proto));
+
+ if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
+ exit(2);
+
+ rtnl_close(&rth);
+
+ return 0;
+}
+
+int do_xfrm_state(int argc, char **argv)
+{
+ if (argc < 1)
+ return xfrm_state_list_or_deleteall(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, "allocspi") == 0)
+ return xfrm_state_allocspi(argc-1, argv+1);
+ if (matches(*argv, "delete") == 0)
+ return xfrm_state_get_or_delete(argc-1, argv+1, 1);
+ if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
+ return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
+ if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+ || matches(*argv, "lst") == 0)
+ return xfrm_state_list_or_deleteall(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_flush(argc-1, argv+1);
+ if (matches(*argv, "count") == 0) {
+ return xfrm_sad_getinfo(argc, argv);
+ }
+ if (matches(*argv, "help") == 0)
+ usage();
+ fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
+ exit(-1);
+}
projects / lisovros / iproute2_canprio.git / blobdiff