net[shemminger]!shemminger
parent
7440b0b5f9
commit
9111bd8e84
1054
iproute2/ip/ipxfrm.c
1054
iproute2/ip/ipxfrm.c
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/* $USAGI: $ */
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/*
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* Copyright (C)2004 USAGI/WIDE Project
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Authors:
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* Masahide NAKAMURA @USAGI
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*/
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#ifndef __XFRM_H__
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#define __XFRM_H__ 1
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#include <stdio.h>
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#include <sys/socket.h>
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#include <linux/xfrm.h>
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#include "utils.h"
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#define XFRM_MAX_DEPTH 6
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#define XFRMS_RTA(x) ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_usersa_info))))
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#define XFRMS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_usersa_info))
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#define XFRMP_RTA(x) ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_info))))
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#define XFRMP_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_userpoilcy_info))
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struct xfrm_buffer {
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char *buf;
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int size;
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int offset;
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int nlmsg_count;
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struct rtnl_handle *rth;
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};
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struct xfrm_filter {
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int use;
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struct xfrm_usersa_info xsinfo;
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__u32 id_src_mask;
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__u32 id_dst_mask;
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__u32 id_proto_mask;
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__u32 id_spi_mask;
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__u32 mode_mask;
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__u32 reqid_mask;
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__u32 state_flags_mask;
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struct xfrm_userpolicy_info xpinfo;
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__u32 dir_mask;
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__u32 sel_src_mask;
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__u32 sel_dst_mask;
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__u32 sel_dev_mask;
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__u32 upspec_proto_mask;
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__u32 upspec_sport_mask;
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__u32 upspec_dport_mask;
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__u32 upspec_type_mask;
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__u32 upspec_code_mask;
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__u32 index_mask;
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__u32 action_mask;
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__u32 priority_mask;
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};
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#define XFRM_FILTER_MASK_FULL (~(__u32)0)
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extern struct xfrm_filter filter;
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int do_xfrm_state(int argc, char **argv);
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int do_xfrm_policy(int argc, char **argv);
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const char *strxf_flags(__u8 flags);
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const char *strxf_share(__u8 share);
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void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
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__u8 mode, __u32 reqid, __u16 family, FILE *fp,
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const char *prefix);
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void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix);
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void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
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struct xfrm_lifetime_cur *cur,
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FILE *fp, const char *prefix);
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void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
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FILE *fp, const char *prefix);
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void xfrm_xfrma_print(struct rtattr *tb[], int ntb, __u16 family,
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FILE *fp, const char *prefix);
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int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
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int *argcp, char ***argvp);
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int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp);
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int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp);
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int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp);
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int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
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int *argcp, char ***argvp);
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#endif
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/* $USAGI: $ */
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/*
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* Copyright (C)2004 USAGI/WIDE Project
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* based on iproute.c
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*/
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/*
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* Authors:
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* Masahide NAKAMURA @USAGI
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <netdb.h>
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#include <linux/xfrm.h>
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#include "utils.h"
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#include "xfrm.h"
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#include "ip_common.h"
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//#define NLMSG_FLUSH_BUF_SIZE (4096-512)
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#define NLMSG_FLUSH_BUF_SIZE 8192
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/*
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* Receiving buffer defines:
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* nlmsg
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* data = struct xfrm_usersa_info
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* rtattr
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* rtattr
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* ... (max count of rtattr is XFRM_MAX_DEPTH)
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*
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* each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
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*/
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#define NLMSG_BUF_SIZE 4096
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#define RTA_BUF_SIZE 2048
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#define XFRM_ALGO_KEY_BUF_SIZE 512
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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#ifdef USE_MIP6
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fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ XFRM_OPT ] [ mode MODE ]\n");
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#else
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fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n");
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#endif
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fprintf(stderr, " [ reqid REQID ] [ FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ]\n");
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fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
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fprintf(stderr, "Usage: ip xfrm state { flush | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
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fprintf(stderr, " [ FLAG_LIST ]\n");
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fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
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#ifdef USE_MIP6
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fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp | route2 | hao ]\n");
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#else
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fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
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#endif
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//fprintf(stderr, "SPI - security parameter index(default=0)(PROTO=esp,ah,ipcomp)\n");
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#ifdef USE_MIP6
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fprintf(stderr, "XFRM_OPT := [ ALGO-LIST ] | [ coa ADDR ]\n");
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#endif
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fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
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//fprintf(stderr, "REQID - number(default=0)\n");
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fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] [ flag FLAG ]\n");
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fprintf(stderr, "FLAG := [ noecn | wildrecv ]\n");
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fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ algo ALGO ]\n");
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fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY\n");
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fprintf(stderr, "ALGO_TYPE := [ E | A | C ]\n");
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//fprintf(stderr, "ALGO_NAME - algorithm name\n");
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//fprintf(stderr, "ALGO_KEY - algorithm key\n");
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fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
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fprintf(stderr, "UPSPEC := proto PROTO [ UPSPEC_OPT ]\n");
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fprintf(stderr, "UPSPEC_OPT := [ [ sport PORT ] [ dport PORT ] ] |\n");
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#ifdef USE_MIP6
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fprintf(stderr, " [ type TYPE [ code CODE ] ](for PROTO=ipv6-icmp) |\n");
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fprintf(stderr, " [ type TYPE ](for PROTO=ipv6-mh)\n");
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#else
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fprintf(stderr, " [ type TYPE [ code CODE ] ](for PROTO=ipv6-icmp)\n");
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#endif
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//fprintf(stderr, "DEV - device name(default=none)\n");
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fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
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fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
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fprintf(stderr, " [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
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exit(-1);
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}
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static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
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char *name, char *key, int max)
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{
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int len;
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#if 1
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/* XXX: verifying both name and key is required! */
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fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
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#endif
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strncpy(alg->alg_name, name, sizeof(alg->alg_name));
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if (strncmp(key, "0x", 2) == 0) {
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/*
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* XXX: fix me!!
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*/
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__u64 val = 0;
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char *p = (char *)&val;
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if (get_u64(&val, key, 16))
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invarg("\"ALGOKEY\" is invalid", key);
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len = (strlen(key) - 2) / 2;
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if (len > sizeof(val))
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invarg("\"ALGOKEY\" is invalid: too large", key);
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if (len > 0) {
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int index = sizeof(val) - len;
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if (len > max)
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invarg("\"ALGOKEY\" makes buffer overflow\n", key);
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memcpy(alg->alg_key, &p[index], len);
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}
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} else {
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len = strlen(key);
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if (len > 0) {
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if (len > max)
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invarg("\"ALGOKEY\" makes buffer overflow\n", key);
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strncpy(alg->alg_key, key, len);
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}
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}
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alg->alg_key_len = len * 8;
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return 0;
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}
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static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
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{
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int argc = *argcp;
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char **argv = *argvp;
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if (strcmp(*argv, "noecn") == 0)
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*flags |= XFRM_STATE_NOECN;
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#ifdef USE_MIP6
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else if (strcmp(*argv, "wildrecv") == 0)
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*flags |= XFRM_STATE_WILDRECV;
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#endif
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else
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invarg("\"FLAG\" is invalid", *argv);
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filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
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*argcp = argc;
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*argvp = argv;
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return 0;
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}
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static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
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{
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struct rtnl_handle rth;
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struct {
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struct nlmsghdr n;
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struct xfrm_usersa_info xsinfo;
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char buf[RTA_BUF_SIZE];
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} req;
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char *idp = NULL;
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char *ealgop = NULL;
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char *aalgop = NULL;
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char *calgop = NULL;
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#ifdef USE_MIP6
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char *coap = NULL;
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#endif
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memset(&req, 0, sizeof(req));
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req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
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req.n.nlmsg_flags = NLM_F_REQUEST|flags;
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req.n.nlmsg_type = cmd;
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req.xsinfo.family = preferred_family;
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req.xsinfo.lft.soft_byte_limit = XFRM_INF;
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req.xsinfo.lft.hard_byte_limit = XFRM_INF;
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req.xsinfo.lft.soft_packet_limit = XFRM_INF;
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req.xsinfo.lft.hard_packet_limit = XFRM_INF;
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while (argc > 0) {
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if (strcmp(*argv, "algo") == 0) {
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struct {
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struct xfrm_algo alg;
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char buf[XFRM_ALGO_KEY_BUF_SIZE];
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} alg;
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int len;
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enum xfrm_attr_type_t type;
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char *name;
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char *key;
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NEXT_ARG();
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if (strcmp(*argv, "E") == 0) {
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if (ealgop)
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duparg("ALGOTYPE", *argv);
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ealgop = *argv;
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type = XFRMA_ALG_CRYPT;
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} else if (strcmp(*argv, "A") == 0) {
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if (aalgop)
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duparg("ALGOTYPE", *argv);
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aalgop = *argv;
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type = XFRMA_ALG_AUTH;
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} else if (strcmp(*argv, "C") == 0) {
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if (calgop)
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duparg("ALGOTYPE", *argv);
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calgop = *argv;
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type = XFRMA_ALG_COMP;
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} else
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invarg("\"ALGOTYPE\" is invalid\n", *argv);
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if (!NEXT_ARG_OK())
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missarg("ALGONAME");
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NEXT_ARG();
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name = *argv;
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if (!NEXT_ARG_OK())
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missarg("ALGOKEY");
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NEXT_ARG();
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key = *argv;
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memset(&alg, 0, sizeof(alg));
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xfrm_algo_parse((void *)&alg, type, name, key, sizeof(alg.buf));
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len = sizeof(struct xfrm_algo) + alg.alg.alg_key_len;
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addattr_l(&req.n, sizeof(req.buf), type,
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(void *)&alg, len);
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#ifdef USE_MIP6
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} else if (strcmp(*argv, "coa") == 0) {
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inet_prefix coa;
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if (coap)
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duparg("coa", *argv);
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coap = *argv;
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NEXT_ARG();
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get_prefix(&coa, *argv, req.xsinfo.family);
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if (req.xsinfo.family == AF_UNSPEC)
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req.xsinfo.family = coa.family;
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if (coa.bytelen)
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addattr_l(&req.n, sizeof(req.buf), XFRMA_ADDR,
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&coa.data, coa.bytelen);
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#endif
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} else if (strcmp(*argv, "mode") == 0) {
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NEXT_ARG();
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xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
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} else if (strcmp(*argv, "reqid") == 0) {
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NEXT_ARG();
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xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
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} else if (strcmp(*argv, "flag") == 0) {
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NEXT_ARG();
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xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
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} else if (strcmp(*argv, "sel") == 0) {
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NEXT_ARG();
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xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
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} else if (strcmp(*argv, "limit") == 0) {
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NEXT_ARG();
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xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
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} else {
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if (idp)
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invarg("unknown", *argv);
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idp = *argv;
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/* ID */
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xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
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&req.xsinfo.family, &argc, &argv);
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if (preferred_family == AF_UNSPEC)
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preferred_family = req.xsinfo.family;
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}
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argc--; argv++;
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}
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if (!idp) {
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fprintf(stderr, "Not enough information: \"ID\" is required\n");
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exit(1);
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}
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if (ealgop || aalgop || calgop) {
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if (req.xsinfo.id.proto != IPPROTO_ESP &&
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req.xsinfo.id.proto != IPPROTO_AH &&
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req.xsinfo.id.proto != IPPROTO_COMP) {
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fprintf(stderr, "\"ALGO\" is invalid with proto=%d\n", req.xsinfo.id.proto);
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exit(1);
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}
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} else {
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if (req.xsinfo.id.proto == IPPROTO_ESP ||
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req.xsinfo.id.proto == IPPROTO_AH ||
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req.xsinfo.id.proto == IPPROTO_COMP) {
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fprintf(stderr, "\"ALGO\" is required with proto=%d\n", req.xsinfo.id.proto);
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exit (1);
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}
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}
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#ifdef USE_MIP6
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if (coap) {
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if (req.xsinfo.id.proto != IPPROTO_ROUTING &&
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req.xsinfo.id.proto != IPPROTO_DSTOPTS) {
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fprintf(stderr, "\"COA\" is invalid with proto=%d\n", req.xsinfo.id.proto);
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exit(1);
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}
|
||||
} else {
|
||||
if (req.xsinfo.id.proto == IPPROTO_ROUTING ||
|
||||
req.xsinfo.id.proto == IPPROTO_DSTOPTS) {
|
||||
fprintf(stderr, "\"COA\" is required with proto=%d\n", req.xsinfo.id.proto);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
if (req.xsinfo.id.spi) {
|
||||
if (req.xsinfo.id.proto == IPPROTO_ROUTING ||
|
||||
req.xsinfo.id.proto == IPPROTO_DSTOPTS) {
|
||||
fprintf(stderr, "Invalid spi: %u (zero is requried) with proto=%d\n", ntohl(req.xsinfo.id.spi), req.xsinfo.id.proto);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
if (req.xsinfo.mode) {
|
||||
if (req.xsinfo.id.proto == IPPROTO_ROUTING ||
|
||||
req.xsinfo.id.proto == IPPROTO_DSTOPTS) {
|
||||
fprintf(stderr, "Invalid mode: (transport is requried) 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 ");
|
||||
#ifdef USE_MIP6
|
||||
if (xsinfo->flags & XFRM_STATE_WILDRECV)
|
||||
fprintf(fp, "wildrecv ");
|
||||
#endif
|
||||
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) {
|
||||
#ifndef USE_MIP6
|
||||
/*
|
||||
* 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;
|
||||
#endif
|
||||
if (idp)
|
||||
invarg("unknown", *argv);
|
||||
idp = *argv;
|
||||
|
||||
/* ID */
|
||||
memset(&id, 0, sizeof(id));
|
||||
#ifdef USE_MIP6
|
||||
xfrm_id_parse(&req.xsid.saddr, &id, &req.xsid.family,
|
||||
&argc, &argv);
|
||||
#else
|
||||
xfrm_id_parse(&ignore_saddr, &id, &req.xsid.family,
|
||||
&argc, &argv);
|
||||
#endif
|
||||
memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
|
||||
req.xsid.spi = id.spi;
|
||||
req.xsid.proto = id.proto;
|
||||
|
||||
argc--; argv++;
|
||||
}
|
||||
|
||||
switch (req.xsid.proto) {
|
||||
#ifdef USE_MIP6
|
||||
case IPPROTO_ROUTING:
|
||||
case IPPROTO_DSTOPTS:
|
||||
if (req.xsid.spi) {
|
||||
fprintf(stderr, "Invalid spi: %u (zero is requried) with proto=%d\n", req.xsid.spi, req.xsid.proto);
|
||||
exit(1);
|
||||
}
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
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));
|
||||
#ifdef USE_MIP6
|
||||
memcpy(&xsid->saddr, &xsinfo->saddr, sizeof(xsid->saddr));
|
||||
#endif
|
||||
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 0
|
||||
/*
|
||||
* NLM_F_X is not supported for xfrm in the kernel.
|
||||
*/
|
||||
if (matches(*argv, "add") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_CREATE|NLM_F_EXCL,
|
||||
argc-1, argv+1);
|
||||
if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_REPLACE,
|
||||
argc-1, argv+1);
|
||||
if (matches(*argv, "replace") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_CREATE|NLM_F_REPLACE,
|
||||
argc-1, argv+1);
|
||||
if (matches(*argv, "prepend") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_CREATE,
|
||||
argc-1, argv+1);
|
||||
if (matches(*argv, "append") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_CREATE|NLM_F_APPEND,
|
||||
argc-1, argv+1);
|
||||
if (matches(*argv, "test") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, NLM_F_EXCL,
|
||||
argc-1, argv+1);
|
||||
#else
|
||||
if (matches(*argv, "add") == 0)
|
||||
return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
|
||||
argc-1, argv+1);
|
||||
#endif
|
||||
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);
|
||||
}
|
||||
Loading…
Reference in New Issue