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net/key/af_key.c
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/* * net/key/af_key.c An implementation of PF_KEYv2 sockets. * * 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. * * Authors: Maxim Giryaev <gem@asplinux.ru> * David S. Miller <davem@redhat.com> * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> * Kunihiro Ishiguro <kunihiro@ipinfusion.com> * Kazunori MIYAZAWA / USAGI Project <miyazawa@linux-ipv6.org> * Derek Atkins <derek@ihtfp.com> */ |
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#include <linux/capability.h> |
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#include <linux/module.h> #include <linux/kernel.h> #include <linux/socket.h> #include <linux/pfkeyv2.h> #include <linux/ipsec.h> #include <linux/skbuff.h> #include <linux/rtnetlink.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/proc_fs.h> #include <linux/init.h> |
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#include <net/net_namespace.h> |
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#include <net/netns/generic.h> |
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#include <net/xfrm.h> #include <net/sock.h> #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x)) #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x)) |
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static int pfkey_net_id; struct netns_pfkey { /* List of all pfkey sockets. */ struct hlist_head table; atomic_t socks_nr; }; |
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static DECLARE_WAIT_QUEUE_HEAD(pfkey_table_wait); static DEFINE_RWLOCK(pfkey_table_lock); static atomic_t pfkey_table_users = ATOMIC_INIT(0); |
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struct pfkey_sock { /* struct sock must be the first member of struct pfkey_sock */ struct sock sk; int registered; int promisc; |
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struct { uint8_t msg_version; uint32_t msg_pid; int (*dump)(struct pfkey_sock *sk); void (*done)(struct pfkey_sock *sk); union { struct xfrm_policy_walk policy; struct xfrm_state_walk state; } u; |
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struct sk_buff *skb; |
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} dump; |
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}; static inline struct pfkey_sock *pfkey_sk(struct sock *sk) { return (struct pfkey_sock *)sk; } |
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static int pfkey_can_dump(struct sock *sk) { if (3 * atomic_read(&sk->sk_rmem_alloc) <= 2 * sk->sk_rcvbuf) return 1; return 0; } |
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static void pfkey_terminate_dump(struct pfkey_sock *pfk) |
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{ |
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if (pfk->dump.dump) { |
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if (pfk->dump.skb) { kfree_skb(pfk->dump.skb); pfk->dump.skb = NULL; } |
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pfk->dump.done(pfk); pfk->dump.dump = NULL; pfk->dump.done = NULL; } |
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} |
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static void pfkey_sock_destruct(struct sock *sk) { |
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struct net *net = sock_net(sk); struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
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pfkey_terminate_dump(pfkey_sk(sk)); |
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skb_queue_purge(&sk->sk_receive_queue); if (!sock_flag(sk, SOCK_DEAD)) { printk("Attempt to release alive pfkey socket: %p ", sk); return; } |
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WARN_ON(atomic_read(&sk->sk_rmem_alloc)); WARN_ON(atomic_read(&sk->sk_wmem_alloc)); |
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atomic_dec(&net_pfkey->socks_nr); |
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} static void pfkey_table_grab(void) { write_lock_bh(&pfkey_table_lock); if (atomic_read(&pfkey_table_users)) { DECLARE_WAITQUEUE(wait, current); add_wait_queue_exclusive(&pfkey_table_wait, &wait); for(;;) { set_current_state(TASK_UNINTERRUPTIBLE); if (atomic_read(&pfkey_table_users) == 0) break; write_unlock_bh(&pfkey_table_lock); schedule(); write_lock_bh(&pfkey_table_lock); } __set_current_state(TASK_RUNNING); remove_wait_queue(&pfkey_table_wait, &wait); } } static __inline__ void pfkey_table_ungrab(void) { write_unlock_bh(&pfkey_table_lock); wake_up(&pfkey_table_wait); } static __inline__ void pfkey_lock_table(void) { /* read_lock() synchronizes us to pfkey_table_grab */ read_lock(&pfkey_table_lock); atomic_inc(&pfkey_table_users); read_unlock(&pfkey_table_lock); } static __inline__ void pfkey_unlock_table(void) { if (atomic_dec_and_test(&pfkey_table_users)) wake_up(&pfkey_table_wait); } |
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static const struct proto_ops pfkey_ops; |
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static void pfkey_insert(struct sock *sk) { |
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struct net *net = sock_net(sk); struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
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pfkey_table_grab(); |
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sk_add_node(sk, &net_pfkey->table); |
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pfkey_table_ungrab(); } static void pfkey_remove(struct sock *sk) { pfkey_table_grab(); sk_del_node_init(sk); pfkey_table_ungrab(); } static struct proto key_proto = { .name = "KEY", .owner = THIS_MODULE, .obj_size = sizeof(struct pfkey_sock), }; |
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static int pfkey_create(struct net *net, struct socket *sock, int protocol) |
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{ |
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struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
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struct sock *sk; int err; if (!capable(CAP_NET_ADMIN)) return -EPERM; if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; if (protocol != PF_KEY_V2) return -EPROTONOSUPPORT; err = -ENOMEM; |
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sk = sk_alloc(net, PF_KEY, GFP_KERNEL, &key_proto); |
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if (sk == NULL) goto out; |
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sock->ops = &pfkey_ops; sock_init_data(sock, sk); sk->sk_family = PF_KEY; sk->sk_destruct = pfkey_sock_destruct; |
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atomic_inc(&net_pfkey->socks_nr); |
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pfkey_insert(sk); return 0; out: return err; } static int pfkey_release(struct socket *sock) { struct sock *sk = sock->sk; if (!sk) return 0; pfkey_remove(sk); sock_orphan(sk); sock->sk = NULL; skb_queue_purge(&sk->sk_write_queue); sock_put(sk); return 0; } static int pfkey_broadcast_one(struct sk_buff *skb, struct sk_buff **skb2, |
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gfp_t allocation, struct sock *sk) |
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{ int err = -ENOBUFS; sock_hold(sk); if (*skb2 == NULL) { if (atomic_read(&skb->users) != 1) { *skb2 = skb_clone(skb, allocation); } else { *skb2 = skb; atomic_inc(&skb->users); } } if (*skb2 != NULL) { if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) { skb_orphan(*skb2); skb_set_owner_r(*skb2, sk); skb_queue_tail(&sk->sk_receive_queue, *skb2); sk->sk_data_ready(sk, (*skb2)->len); *skb2 = NULL; err = 0; } } sock_put(sk); return err; } /* Send SKB to all pfkey sockets matching selected criteria. */ #define BROADCAST_ALL 0 #define BROADCAST_ONE 1 #define BROADCAST_REGISTERED 2 #define BROADCAST_PROMISC_ONLY 4 |
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static int pfkey_broadcast(struct sk_buff *skb, gfp_t allocation, |
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int broadcast_flags, struct sock *one_sk, struct net *net) |
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{ |
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struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
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struct sock *sk; struct hlist_node *node; struct sk_buff *skb2 = NULL; int err = -ESRCH; /* XXX Do we need something like netlink_overrun? I think * XXX PF_KEY socket apps will not mind current behavior. */ if (!skb) return -ENOMEM; pfkey_lock_table(); |
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sk_for_each(sk, node, &net_pfkey->table) { |
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struct pfkey_sock *pfk = pfkey_sk(sk); int err2; /* Yes, it means that if you are meant to receive this * pfkey message you receive it twice as promiscuous * socket. */ if (pfk->promisc) pfkey_broadcast_one(skb, &skb2, allocation, sk); /* the exact target will be processed later */ if (sk == one_sk) continue; if (broadcast_flags != BROADCAST_ALL) { if (broadcast_flags & BROADCAST_PROMISC_ONLY) continue; if ((broadcast_flags & BROADCAST_REGISTERED) && !pfk->registered) continue; if (broadcast_flags & BROADCAST_ONE) continue; } err2 = pfkey_broadcast_one(skb, &skb2, allocation, sk); /* Error is cleare after succecful sending to at least one * registered KM */ if ((broadcast_flags & BROADCAST_REGISTERED) && err) err = err2; } pfkey_unlock_table(); if (one_sk != NULL) err = pfkey_broadcast_one(skb, &skb2, allocation, one_sk); |
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kfree_skb(skb2); |
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kfree_skb(skb); return err; } |
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static int pfkey_do_dump(struct pfkey_sock *pfk) { |
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struct sadb_msg *hdr; |
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int rc; rc = pfk->dump.dump(pfk); if (rc == -ENOBUFS) return 0; |
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if (pfk->dump.skb) { if (!pfkey_can_dump(&pfk->sk)) return 0; hdr = (struct sadb_msg *) pfk->dump.skb->data; hdr->sadb_msg_seq = 0; hdr->sadb_msg_errno = rc; pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE, |
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&pfk->sk, sock_net(&pfk->sk)); |
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pfk->dump.skb = NULL; } |
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pfkey_terminate_dump(pfk); return rc; } |
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static inline void pfkey_hdr_dup(struct sadb_msg *new, struct sadb_msg *orig) { *new = *orig; } static int pfkey_error(struct sadb_msg *orig, int err, struct sock *sk) { struct sk_buff *skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_KERNEL); struct sadb_msg *hdr; if (!skb) return -ENOBUFS; /* Woe be to the platform trying to support PFKEY yet * having normal errnos outside the 1-255 range, inclusive. */ err = -err; if (err == ERESTARTSYS || err == ERESTARTNOHAND || err == ERESTARTNOINTR) err = EINTR; if (err >= 512) err = EINVAL; |
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BUG_ON(err <= 0 || err >= 256); |
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hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); pfkey_hdr_dup(hdr, orig); hdr->sadb_msg_errno = (uint8_t) err; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); |
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pfkey_broadcast(skb, GFP_KERNEL, BROADCAST_ONE, sk, sock_net(sk)); |
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return 0; } static u8 sadb_ext_min_len[] = { [SADB_EXT_RESERVED] = (u8) 0, [SADB_EXT_SA] = (u8) sizeof(struct sadb_sa), [SADB_EXT_LIFETIME_CURRENT] = (u8) sizeof(struct sadb_lifetime), [SADB_EXT_LIFETIME_HARD] = (u8) sizeof(struct sadb_lifetime), [SADB_EXT_LIFETIME_SOFT] = (u8) sizeof(struct sadb_lifetime), [SADB_EXT_ADDRESS_SRC] = (u8) sizeof(struct sadb_address), [SADB_EXT_ADDRESS_DST] = (u8) sizeof(struct sadb_address), [SADB_EXT_ADDRESS_PROXY] = (u8) sizeof(struct sadb_address), [SADB_EXT_KEY_AUTH] = (u8) sizeof(struct sadb_key), [SADB_EXT_KEY_ENCRYPT] = (u8) sizeof(struct sadb_key), [SADB_EXT_IDENTITY_SRC] = (u8) sizeof(struct sadb_ident), [SADB_EXT_IDENTITY_DST] = (u8) sizeof(struct sadb_ident), [SADB_EXT_SENSITIVITY] = (u8) sizeof(struct sadb_sens), [SADB_EXT_PROPOSAL] = (u8) sizeof(struct sadb_prop), [SADB_EXT_SUPPORTED_AUTH] = (u8) sizeof(struct sadb_supported), [SADB_EXT_SUPPORTED_ENCRYPT] = (u8) sizeof(struct sadb_supported), [SADB_EXT_SPIRANGE] = (u8) sizeof(struct sadb_spirange), [SADB_X_EXT_KMPRIVATE] = (u8) sizeof(struct sadb_x_kmprivate), [SADB_X_EXT_POLICY] = (u8) sizeof(struct sadb_x_policy), [SADB_X_EXT_SA2] = (u8) sizeof(struct sadb_x_sa2), [SADB_X_EXT_NAT_T_TYPE] = (u8) sizeof(struct sadb_x_nat_t_type), [SADB_X_EXT_NAT_T_SPORT] = (u8) sizeof(struct sadb_x_nat_t_port), [SADB_X_EXT_NAT_T_DPORT] = (u8) sizeof(struct sadb_x_nat_t_port), [SADB_X_EXT_NAT_T_OA] = (u8) sizeof(struct sadb_address), |
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[SADB_X_EXT_SEC_CTX] = (u8) sizeof(struct sadb_x_sec_ctx), |
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[SADB_X_EXT_KMADDRESS] = (u8) sizeof(struct sadb_x_kmaddress), |
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}; /* Verify sadb_address_{len,prefixlen} against sa_family. */ static int verify_address_len(void *p) { struct sadb_address *sp = p; struct sockaddr *addr = (struct sockaddr *)(sp + 1); struct sockaddr_in *sin; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) struct sockaddr_in6 *sin6; #endif int len; switch (addr->sa_family) { case AF_INET: |
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len = DIV_ROUND_UP(sizeof(*sp) + sizeof(*sin), sizeof(uint64_t)); |
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if (sp->sadb_address_len != len || sp->sadb_address_prefixlen > 32) return -EINVAL; break; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: |
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len = DIV_ROUND_UP(sizeof(*sp) + sizeof(*sin6), sizeof(uint64_t)); |
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if (sp->sadb_address_len != len || sp->sadb_address_prefixlen > 128) return -EINVAL; break; #endif default: /* It is user using kernel to keep track of security * associations for another protocol, such as * OSPF/RSVP/RIPV2/MIP. It is user's job to verify * lengths. * * XXX Actually, association/policy database is not yet * XXX able to cope with arbitrary sockaddr families. * XXX When it can, remove this -EINVAL. -DaveM */ return -EINVAL; break; |
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} |
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return 0; } |
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static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx *sec_ctx) { |
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return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx) + sec_ctx->sadb_x_ctx_len, sizeof(uint64_t)); |
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} static inline int verify_sec_ctx_len(void *p) { struct sadb_x_sec_ctx *sec_ctx = (struct sadb_x_sec_ctx *)p; |
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int len = sec_ctx->sadb_x_ctx_len; |
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if (len > PAGE_SIZE) |
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return -EINVAL; len = pfkey_sec_ctx_len(sec_ctx); if (sec_ctx->sadb_x_sec_len != len) return -EINVAL; return 0; } static inline struct xfrm_user_sec_ctx *pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx *sec_ctx) { struct xfrm_user_sec_ctx *uctx = NULL; int ctx_size = sec_ctx->sadb_x_ctx_len; uctx = kmalloc((sizeof(*uctx)+ctx_size), GFP_KERNEL); if (!uctx) return NULL; uctx->len = pfkey_sec_ctx_len(sec_ctx); uctx->exttype = sec_ctx->sadb_x_sec_exttype; uctx->ctx_doi = sec_ctx->sadb_x_ctx_doi; uctx->ctx_alg = sec_ctx->sadb_x_ctx_alg; uctx->ctx_len = sec_ctx->sadb_x_ctx_len; memcpy(uctx + 1, sec_ctx + 1, uctx->ctx_len); return uctx; } |
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static int present_and_same_family(struct sadb_address *src, struct sadb_address *dst) { struct sockaddr *s_addr, *d_addr; if (!src || !dst) return 0; s_addr = (struct sockaddr *)(src + 1); d_addr = (struct sockaddr *)(dst + 1); if (s_addr->sa_family != d_addr->sa_family) return 0; if (s_addr->sa_family != AF_INET #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) && s_addr->sa_family != AF_INET6 #endif ) return 0; return 1; } static int parse_exthdrs(struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { char *p = (char *) hdr; int len = skb->len; len -= sizeof(*hdr); p += sizeof(*hdr); while (len > 0) { struct sadb_ext *ehdr = (struct sadb_ext *) p; uint16_t ext_type; int ext_len; ext_len = ehdr->sadb_ext_len; ext_len *= sizeof(uint64_t); ext_type = ehdr->sadb_ext_type; if (ext_len < sizeof(uint64_t) || ext_len > len || ext_type == SADB_EXT_RESERVED) return -EINVAL; if (ext_type <= SADB_EXT_MAX) { int min = (int) sadb_ext_min_len[ext_type]; if (ext_len < min) return -EINVAL; if (ext_hdrs[ext_type-1] != NULL) return -EINVAL; if (ext_type == SADB_EXT_ADDRESS_SRC || ext_type == SADB_EXT_ADDRESS_DST || ext_type == SADB_EXT_ADDRESS_PROXY || ext_type == SADB_X_EXT_NAT_T_OA) { if (verify_address_len(p)) return -EINVAL; |
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} |
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if (ext_type == SADB_X_EXT_SEC_CTX) { if (verify_sec_ctx_len(p)) return -EINVAL; } |
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ext_hdrs[ext_type-1] = p; } p += ext_len; len -= ext_len; } return 0; } static uint16_t pfkey_satype2proto(uint8_t satype) { switch (satype) { case SADB_SATYPE_UNSPEC: return IPSEC_PROTO_ANY; case SADB_SATYPE_AH: return IPPROTO_AH; case SADB_SATYPE_ESP: return IPPROTO_ESP; case SADB_X_SATYPE_IPCOMP: return IPPROTO_COMP; break; default: return 0; } /* NOTREACHED */ } static uint8_t pfkey_proto2satype(uint16_t proto) { switch (proto) { case IPPROTO_AH: return SADB_SATYPE_AH; case IPPROTO_ESP: return SADB_SATYPE_ESP; case IPPROTO_COMP: return SADB_X_SATYPE_IPCOMP; break; default: return 0; } /* NOTREACHED */ } /* BTW, this scheme means that there is no way with PFKEY2 sockets to * say specifically 'just raw sockets' as we encode them as 255. */ static uint8_t pfkey_proto_to_xfrm(uint8_t proto) { return (proto == IPSEC_PROTO_ANY ? 0 : proto); } static uint8_t pfkey_proto_from_xfrm(uint8_t proto) { return (proto ? proto : IPSEC_PROTO_ANY); } |
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static inline int pfkey_sockaddr_len(sa_family_t family) { switch (family) { case AF_INET: return sizeof(struct sockaddr_in); #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: return sizeof(struct sockaddr_in6); #endif } return 0; } |
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static int pfkey_sockaddr_extract(const struct sockaddr *sa, xfrm_address_t *xaddr) |
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{ |
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switch (sa->sa_family) { |
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case AF_INET: |
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xaddr->a4 = |
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((struct sockaddr_in *)sa)->sin_addr.s_addr; |
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return AF_INET; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: |
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memcpy(xaddr->a6, |
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&((struct sockaddr_in6 *)sa)->sin6_addr, |
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sizeof(struct in6_addr)); return AF_INET6; #endif |
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} |
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return 0; } static int pfkey_sadb_addr2xfrm_addr(struct sadb_address *addr, xfrm_address_t *xaddr) { return pfkey_sockaddr_extract((struct sockaddr *)(addr + 1), xaddr); |
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} |
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static struct xfrm_state *pfkey_xfrm_state_lookup(struct net *net, struct sadb_msg *hdr, void **ext_hdrs) |
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633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 |
{ struct sadb_sa *sa; struct sadb_address *addr; uint16_t proto; unsigned short family; xfrm_address_t *xaddr; sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1]; if (sa == NULL) return NULL; proto = pfkey_satype2proto(hdr->sadb_msg_satype); if (proto == 0) return NULL; /* sadb_address_len should be checked by caller */ addr = (struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1]; if (addr == NULL) return NULL; family = ((struct sockaddr *)(addr + 1))->sa_family; switch (family) { case AF_INET: xaddr = (xfrm_address_t *)&((struct sockaddr_in *)(addr + 1))->sin_addr; break; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: xaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(addr + 1))->sin6_addr; break; #endif default: xaddr = NULL; } if (!xaddr) return NULL; |
07fb0f179
|
669 |
return xfrm_state_lookup(net, xaddr, sa->sadb_sa_spi, proto, family); |
1da177e4c
|
670 671 672 |
} #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1))) |
9e8b4ed8b
|
673 |
|
1da177e4c
|
674 675 676 |
static int pfkey_sockaddr_size(sa_family_t family) { |
9e8b4ed8b
|
677 |
return PFKEY_ALIGN8(pfkey_sockaddr_len(family)); |
1da177e4c
|
678 |
} |
55569ce25
|
679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 |
static inline int pfkey_mode_from_xfrm(int mode) { switch(mode) { case XFRM_MODE_TRANSPORT: return IPSEC_MODE_TRANSPORT; case XFRM_MODE_TUNNEL: return IPSEC_MODE_TUNNEL; case XFRM_MODE_BEET: return IPSEC_MODE_BEET; default: return -1; } } static inline int pfkey_mode_to_xfrm(int mode) { switch(mode) { case IPSEC_MODE_ANY: /*XXX*/ case IPSEC_MODE_TRANSPORT: return XFRM_MODE_TRANSPORT; case IPSEC_MODE_TUNNEL: return XFRM_MODE_TUNNEL; case IPSEC_MODE_BEET: return XFRM_MODE_BEET; default: return -1; } } |
e5b56652c
|
707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 |
static unsigned int pfkey_sockaddr_fill(xfrm_address_t *xaddr, __be16 port, struct sockaddr *sa, unsigned short family) { switch (family) { case AF_INET: { struct sockaddr_in *sin = (struct sockaddr_in *)sa; sin->sin_family = AF_INET; sin->sin_port = port; sin->sin_addr.s_addr = xaddr->a4; memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); return 32; } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: { struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; sin6->sin6_family = AF_INET6; sin6->sin6_port = port; sin6->sin6_flowinfo = 0; ipv6_addr_copy(&sin6->sin6_addr, (struct in6_addr *)xaddr->a6); sin6->sin6_scope_id = 0; return 128; } #endif } return 0; } |
050f009e1
|
736 737 |
static struct sk_buff *__pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys, int hsc) |
1da177e4c
|
738 739 740 741 742 743 744 745 |
{ struct sk_buff *skb; struct sadb_msg *hdr; struct sadb_sa *sa; struct sadb_lifetime *lifetime; struct sadb_address *addr; struct sadb_key *key; struct sadb_x_sa2 *sa2; |
df71837d5
|
746 747 748 |
struct sadb_x_sec_ctx *sec_ctx; struct xfrm_sec_ctx *xfrm_ctx; int ctx_size = 0; |
1da177e4c
|
749 750 751 752 753 |
int size; int auth_key_size = 0; int encrypt_key_size = 0; int sockaddr_size; struct xfrm_encap_tmpl *natt = NULL; |
55569ce25
|
754 |
int mode; |
1da177e4c
|
755 756 757 758 759 760 761 762 |
/* address family check */ sockaddr_size = pfkey_sockaddr_size(x->props.family); if (!sockaddr_size) return ERR_PTR(-EINVAL); /* base, SA, (lifetime (HSC),) address(SD), (address(P),) key(AE), (identity(SD),) (sensitivity)> */ |
8ff24541d
|
763 |
size = sizeof(struct sadb_msg) +sizeof(struct sadb_sa) + |
1da177e4c
|
764 765 766 |
sizeof(struct sadb_lifetime) + ((hsc & 1) ? sizeof(struct sadb_lifetime) : 0) + ((hsc & 2) ? sizeof(struct sadb_lifetime) : 0) + |
8ff24541d
|
767 |
sizeof(struct sadb_address)*2 + |
1da177e4c
|
768 769 |
sockaddr_size*2 + sizeof(struct sadb_x_sa2); |
df71837d5
|
770 771 772 773 774 |
if ((xfrm_ctx = x->security)) { ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len); size += sizeof(struct sadb_x_sec_ctx) + ctx_size; } |
1da177e4c
|
775 |
/* identity & sensitivity */ |
81b302a32
|
776 |
if (xfrm_addr_cmp(&x->sel.saddr, &x->props.saddr, x->props.family)) |
1da177e4c
|
777 778 779 780 |
size += sizeof(struct sadb_address) + sockaddr_size; if (add_keys) { if (x->aalg && x->aalg->alg_key_len) { |
8ff24541d
|
781 782 |
auth_key_size = PFKEY_ALIGN8((x->aalg->alg_key_len + 7) / 8); |
1da177e4c
|
783 784 785 |
size += sizeof(struct sadb_key) + auth_key_size; } if (x->ealg && x->ealg->alg_key_len) { |
8ff24541d
|
786 787 |
encrypt_key_size = PFKEY_ALIGN8((x->ealg->alg_key_len+7) / 8); |
1da177e4c
|
788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 |
size += sizeof(struct sadb_key) + encrypt_key_size; } } if (x->encap) natt = x->encap; if (natt && natt->encap_type) { size += sizeof(struct sadb_x_nat_t_type); size += sizeof(struct sadb_x_nat_t_port); size += sizeof(struct sadb_x_nat_t_port); } skb = alloc_skb(size + 16, GFP_ATOMIC); if (skb == NULL) return ERR_PTR(-ENOBUFS); /* call should fill header later */ hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); memset(hdr, 0, size); /* XXX do we need this ? */ hdr->sadb_msg_len = size / sizeof(uint64_t); /* sa */ sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa)); sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t); sa->sadb_sa_exttype = SADB_EXT_SA; sa->sadb_sa_spi = x->id.spi; sa->sadb_sa_replay = x->props.replay_window; |
4f09f0bbc
|
815 816 817 818 819 820 |
switch (x->km.state) { case XFRM_STATE_VALID: sa->sadb_sa_state = x->km.dying ? SADB_SASTATE_DYING : SADB_SASTATE_MATURE; break; case XFRM_STATE_ACQ: |
1da177e4c
|
821 |
sa->sadb_sa_state = SADB_SASTATE_LARVAL; |
4f09f0bbc
|
822 823 |
break; default: |
1da177e4c
|
824 |
sa->sadb_sa_state = SADB_SASTATE_DEAD; |
4f09f0bbc
|
825 826 |
break; } |
1da177e4c
|
827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 |
sa->sadb_sa_auth = 0; if (x->aalg) { struct xfrm_algo_desc *a = xfrm_aalg_get_byname(x->aalg->alg_name, 0); sa->sadb_sa_auth = a ? a->desc.sadb_alg_id : 0; } sa->sadb_sa_encrypt = 0; BUG_ON(x->ealg && x->calg); if (x->ealg) { struct xfrm_algo_desc *a = xfrm_ealg_get_byname(x->ealg->alg_name, 0); sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0; } /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */ if (x->calg) { struct xfrm_algo_desc *a = xfrm_calg_get_byname(x->calg->alg_name, 0); sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0; } sa->sadb_sa_flags = 0; if (x->props.flags & XFRM_STATE_NOECN) sa->sadb_sa_flags |= SADB_SAFLAGS_NOECN; if (x->props.flags & XFRM_STATE_DECAP_DSCP) sa->sadb_sa_flags |= SADB_SAFLAGS_DECAP_DSCP; |
dd87147ee
|
849 850 |
if (x->props.flags & XFRM_STATE_NOPMTUDISC) sa->sadb_sa_flags |= SADB_SAFLAGS_NOPMTUDISC; |
1da177e4c
|
851 852 853 |
/* hard time */ if (hsc & 2) { |
8ff24541d
|
854 |
lifetime = (struct sadb_lifetime *) skb_put(skb, |
1da177e4c
|
855 856 857 858 859 860 861 862 863 864 865 |
sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD; lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.hard_packet_limit); lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.hard_byte_limit); lifetime->sadb_lifetime_addtime = x->lft.hard_add_expires_seconds; lifetime->sadb_lifetime_usetime = x->lft.hard_use_expires_seconds; } /* soft time */ if (hsc & 1) { |
8ff24541d
|
866 |
lifetime = (struct sadb_lifetime *) skb_put(skb, |
1da177e4c
|
867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 |
sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT; lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.soft_packet_limit); lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.soft_byte_limit); lifetime->sadb_lifetime_addtime = x->lft.soft_add_expires_seconds; lifetime->sadb_lifetime_usetime = x->lft.soft_use_expires_seconds; } /* current time */ lifetime = (struct sadb_lifetime *) skb_put(skb, sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT; lifetime->sadb_lifetime_allocations = x->curlft.packets; lifetime->sadb_lifetime_bytes = x->curlft.bytes; lifetime->sadb_lifetime_addtime = x->curlft.add_time; lifetime->sadb_lifetime_usetime = x->curlft.use_time; /* src address */ |
8ff24541d
|
887 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
888 |
sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
889 |
addr->sadb_address_len = |
1da177e4c
|
890 891 892 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; |
8ff24541d
|
893 894 |
/* "if the ports are non-zero, then the sadb_address_proto field, normally zero, MUST be filled in with the transport |
1da177e4c
|
895 |
protocol's number." - RFC2367 */ |
8ff24541d
|
896 |
addr->sadb_address_proto = 0; |
1da177e4c
|
897 |
addr->sadb_address_reserved = 0; |
1da177e4c
|
898 |
|
e5b56652c
|
899 900 901 902 903 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(&x->props.saddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) |
1da177e4c
|
904 905 906 |
BUG(); /* dst address */ |
8ff24541d
|
907 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
908 |
sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
909 |
addr->sadb_address_len = |
1da177e4c
|
910 911 912 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST; |
8ff24541d
|
913 |
addr->sadb_address_proto = 0; |
1da177e4c
|
914 |
addr->sadb_address_reserved = 0; |
1da177e4c
|
915 |
|
e5b56652c
|
916 917 918 919 920 921 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(&x->id.daddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) BUG(); |
1da177e4c
|
922 |
|
e5b56652c
|
923 924 925 926 927 928 929 930 931 932 933 934 |
if (xfrm_addr_cmp(&x->sel.saddr, &x->props.saddr, x->props.family)) { addr = (struct sadb_address*) skb_put(skb, sizeof(struct sadb_address)+sockaddr_size); addr->sadb_address_len = (sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY; addr->sadb_address_proto = pfkey_proto_from_xfrm(x->sel.proto); addr->sadb_address_prefixlen = x->sel.prefixlen_s; addr->sadb_address_reserved = 0; |
1da177e4c
|
935 |
|
e5b56652c
|
936 937 938 |
pfkey_sockaddr_fill(&x->sel.saddr, x->sel.sport, (struct sockaddr *) (addr + 1), x->props.family); |
1da177e4c
|
939 |
} |
1da177e4c
|
940 941 942 |
/* auth key */ if (add_keys && auth_key_size) { |
8ff24541d
|
943 |
key = (struct sadb_key *) skb_put(skb, |
1da177e4c
|
944 945 946 947 948 949 950 951 952 953 |
sizeof(struct sadb_key)+auth_key_size); key->sadb_key_len = (sizeof(struct sadb_key) + auth_key_size) / sizeof(uint64_t); key->sadb_key_exttype = SADB_EXT_KEY_AUTH; key->sadb_key_bits = x->aalg->alg_key_len; key->sadb_key_reserved = 0; memcpy(key + 1, x->aalg->alg_key, (x->aalg->alg_key_len+7)/8); } /* encrypt key */ if (add_keys && encrypt_key_size) { |
8ff24541d
|
954 |
key = (struct sadb_key *) skb_put(skb, |
1da177e4c
|
955 |
sizeof(struct sadb_key)+encrypt_key_size); |
8ff24541d
|
956 |
key->sadb_key_len = (sizeof(struct sadb_key) + |
1da177e4c
|
957 958 959 960 |
encrypt_key_size) / sizeof(uint64_t); key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; key->sadb_key_bits = x->ealg->alg_key_len; key->sadb_key_reserved = 0; |
8ff24541d
|
961 |
memcpy(key + 1, x->ealg->alg_key, |
1da177e4c
|
962 963 964 965 966 967 968 |
(x->ealg->alg_key_len+7)/8); } /* sa */ sa2 = (struct sadb_x_sa2 *) skb_put(skb, sizeof(struct sadb_x_sa2)); sa2->sadb_x_sa2_len = sizeof(struct sadb_x_sa2)/sizeof(uint64_t); sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2; |
55569ce25
|
969 970 971 972 973 |
if ((mode = pfkey_mode_from_xfrm(x->props.mode)) < 0) { kfree_skb(skb); return ERR_PTR(-EINVAL); } sa2->sadb_x_sa2_mode = mode; |
1da177e4c
|
974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 |
sa2->sadb_x_sa2_reserved1 = 0; sa2->sadb_x_sa2_reserved2 = 0; sa2->sadb_x_sa2_sequence = 0; sa2->sadb_x_sa2_reqid = x->props.reqid; if (natt && natt->encap_type) { struct sadb_x_nat_t_type *n_type; struct sadb_x_nat_t_port *n_port; /* type */ n_type = (struct sadb_x_nat_t_type*) skb_put(skb, sizeof(*n_type)); n_type->sadb_x_nat_t_type_len = sizeof(*n_type)/sizeof(uint64_t); n_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE; n_type->sadb_x_nat_t_type_type = natt->encap_type; n_type->sadb_x_nat_t_type_reserved[0] = 0; n_type->sadb_x_nat_t_type_reserved[1] = 0; n_type->sadb_x_nat_t_type_reserved[2] = 0; /* source port */ n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port)); n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t); n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT; n_port->sadb_x_nat_t_port_port = natt->encap_sport; n_port->sadb_x_nat_t_port_reserved = 0; /* dest port */ n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port)); n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t); n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT; n_port->sadb_x_nat_t_port_port = natt->encap_dport; n_port->sadb_x_nat_t_port_reserved = 0; } |
df71837d5
|
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 |
/* security context */ if (xfrm_ctx) { sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, sizeof(struct sadb_x_sec_ctx) + ctx_size); sec_ctx->sadb_x_sec_len = (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t); sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX; sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi; sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg; sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len; memcpy(sec_ctx + 1, xfrm_ctx->ctx_str, xfrm_ctx->ctx_len); } |
1da177e4c
|
1019 1020 |
return skb; } |
050f009e1
|
1021 1022 1023 1024 |
static inline struct sk_buff *pfkey_xfrm_state2msg(struct xfrm_state *x) { struct sk_buff *skb; |
050f009e1
|
1025 |
skb = __pfkey_xfrm_state2msg(x, 1, 3); |
050f009e1
|
1026 1027 1028 1029 1030 1031 1032 1033 1034 |
return skb; } static inline struct sk_buff *pfkey_xfrm_state2msg_expire(struct xfrm_state *x, int hsc) { return __pfkey_xfrm_state2msg(x, 0, hsc); } |
07fb0f179
|
1035 1036 |
static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net, struct sadb_msg *hdr, |
1da177e4c
|
1037 1038 |
void **ext_hdrs) { |
8ff24541d
|
1039 |
struct xfrm_state *x; |
1da177e4c
|
1040 1041 1042 |
struct sadb_lifetime *lifetime; struct sadb_sa *sa; struct sadb_key *key; |
df71837d5
|
1043 |
struct sadb_x_sec_ctx *sec_ctx; |
1da177e4c
|
1044 1045 |
uint16_t proto; int err; |
8ff24541d
|
1046 |
|
1da177e4c
|
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 |
sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1]; if (!sa || !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1])) return ERR_PTR(-EINVAL); if (hdr->sadb_msg_satype == SADB_SATYPE_ESP && !ext_hdrs[SADB_EXT_KEY_ENCRYPT-1]) return ERR_PTR(-EINVAL); if (hdr->sadb_msg_satype == SADB_SATYPE_AH && !ext_hdrs[SADB_EXT_KEY_AUTH-1]) return ERR_PTR(-EINVAL); if (!!ext_hdrs[SADB_EXT_LIFETIME_HARD-1] != !!ext_hdrs[SADB_EXT_LIFETIME_SOFT-1]) return ERR_PTR(-EINVAL); proto = pfkey_satype2proto(hdr->sadb_msg_satype); if (proto == 0) return ERR_PTR(-EINVAL); /* default error is no buffer space */ err = -ENOBUFS; /* RFC2367: Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message. SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state. Therefore, the sadb_sa_state field of all submitted SAs MUST be SADB_SASTATE_MATURE and the kernel MUST return an error if this is not true. |
8ff24541d
|
1078 |
However, KAME setkey always uses SADB_SASTATE_LARVAL. |
1da177e4c
|
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 |
Hence, we have to _ignore_ sadb_sa_state, which is also reasonable. */ if (sa->sadb_sa_auth > SADB_AALG_MAX || (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP && sa->sadb_sa_encrypt > SADB_X_CALG_MAX) || sa->sadb_sa_encrypt > SADB_EALG_MAX) return ERR_PTR(-EINVAL); key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1]; if (key != NULL && sa->sadb_sa_auth != SADB_X_AALG_NULL && ((key->sadb_key_bits+7) / 8 == 0 || (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t))) return ERR_PTR(-EINVAL); key = ext_hdrs[SADB_EXT_KEY_ENCRYPT-1]; if (key != NULL && sa->sadb_sa_encrypt != SADB_EALG_NULL && ((key->sadb_key_bits+7) / 8 == 0 || (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t))) return ERR_PTR(-EINVAL); |
07fb0f179
|
1098 |
x = xfrm_state_alloc(net); |
1da177e4c
|
1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 |
if (x == NULL) return ERR_PTR(-ENOBUFS); x->id.proto = proto; x->id.spi = sa->sadb_sa_spi; x->props.replay_window = sa->sadb_sa_replay; if (sa->sadb_sa_flags & SADB_SAFLAGS_NOECN) x->props.flags |= XFRM_STATE_NOECN; if (sa->sadb_sa_flags & SADB_SAFLAGS_DECAP_DSCP) x->props.flags |= XFRM_STATE_DECAP_DSCP; |
dd87147ee
|
1109 1110 |
if (sa->sadb_sa_flags & SADB_SAFLAGS_NOPMTUDISC) x->props.flags |= XFRM_STATE_NOPMTUDISC; |
1da177e4c
|
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 |
lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_HARD-1]; if (lifetime != NULL) { x->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations); x->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes); x->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime; x->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime; } lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_SOFT-1]; if (lifetime != NULL) { x->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations); x->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes); x->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime; x->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime; } |
df71837d5
|
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1]; if (sec_ctx != NULL) { struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx); if (!uctx) goto out; err = security_xfrm_state_alloc(x, uctx); kfree(uctx); if (err) goto out; } |
1da177e4c
|
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 |
key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1]; if (sa->sadb_sa_auth) { int keysize = 0; struct xfrm_algo_desc *a = xfrm_aalg_get_byid(sa->sadb_sa_auth); if (!a) { err = -ENOSYS; goto out; } if (key) keysize = (key->sadb_key_bits + 7) / 8; x->aalg = kmalloc(sizeof(*x->aalg) + keysize, GFP_KERNEL); if (!x->aalg) goto out; strcpy(x->aalg->alg_name, a->name); x->aalg->alg_key_len = 0; if (key) { x->aalg->alg_key_len = key->sadb_key_bits; memcpy(x->aalg->alg_key, key+1, keysize); } x->props.aalgo = sa->sadb_sa_auth; /* x->algo.flags = sa->sadb_sa_flags; */ } if (sa->sadb_sa_encrypt) { if (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) { struct xfrm_algo_desc *a = xfrm_calg_get_byid(sa->sadb_sa_encrypt); if (!a) { err = -ENOSYS; goto out; } x->calg = kmalloc(sizeof(*x->calg), GFP_KERNEL); if (!x->calg) goto out; strcpy(x->calg->alg_name, a->name); x->props.calgo = sa->sadb_sa_encrypt; } else { int keysize = 0; struct xfrm_algo_desc *a = xfrm_ealg_get_byid(sa->sadb_sa_encrypt); if (!a) { err = -ENOSYS; goto out; } key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_ENCRYPT-1]; if (key) keysize = (key->sadb_key_bits + 7) / 8; x->ealg = kmalloc(sizeof(*x->ealg) + keysize, GFP_KERNEL); if (!x->ealg) goto out; strcpy(x->ealg->alg_name, a->name); x->ealg->alg_key_len = 0; if (key) { x->ealg->alg_key_len = key->sadb_key_bits; memcpy(x->ealg->alg_key, key+1, keysize); } x->props.ealgo = sa->sadb_sa_encrypt; } } /* x->algo.flags = sa->sadb_sa_flags; */ |
8ff24541d
|
1197 |
x->props.family = pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_SRC-1], |
1da177e4c
|
1198 1199 1200 1201 1202 |
&x->props.saddr); if (!x->props.family) { err = -EAFNOSUPPORT; goto out; } |
8ff24541d
|
1203 |
pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1], |
1da177e4c
|
1204 1205 1206 1207 |
&x->id.daddr); if (ext_hdrs[SADB_X_EXT_SA2-1]) { struct sadb_x_sa2 *sa2 = (void*)ext_hdrs[SADB_X_EXT_SA2-1]; |
55569ce25
|
1208 1209 1210 1211 1212 1213 |
int mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode); if (mode < 0) { err = -EINVAL; goto out; } x->props.mode = mode; |
1da177e4c
|
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 |
x->props.reqid = sa2->sadb_x_sa2_reqid; } if (ext_hdrs[SADB_EXT_ADDRESS_PROXY-1]) { struct sadb_address *addr = ext_hdrs[SADB_EXT_ADDRESS_PROXY-1]; /* Nobody uses this, but we try. */ x->sel.family = pfkey_sadb_addr2xfrm_addr(addr, &x->sel.saddr); x->sel.prefixlen_s = addr->sadb_address_prefixlen; } |
4da510568
|
1224 |
if (!x->sel.family) |
4a4b6271a
|
1225 |
x->sel.family = x->props.family; |
1da177e4c
|
1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
if (ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1]) { struct sadb_x_nat_t_type* n_type; struct xfrm_encap_tmpl *natt; x->encap = kmalloc(sizeof(*x->encap), GFP_KERNEL); if (!x->encap) goto out; natt = x->encap; n_type = ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1]; natt->encap_type = n_type->sadb_x_nat_t_type_type; if (ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1]) { struct sadb_x_nat_t_port* n_port = ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1]; natt->encap_sport = n_port->sadb_x_nat_t_port_port; } if (ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1]) { struct sadb_x_nat_t_port* n_port = ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1]; natt->encap_dport = n_port->sadb_x_nat_t_port_port; } |
a8d694c65
|
1248 |
memset(&natt->encap_oa, 0, sizeof(natt->encap_oa)); |
1da177e4c
|
1249 |
} |
72cb6962a
|
1250 1251 |
err = xfrm_init_state(x); if (err) |
1da177e4c
|
1252 |
goto out; |
72cb6962a
|
1253 |
|
1da177e4c
|
1254 |
x->km.seq = hdr->sadb_msg_seq; |
1da177e4c
|
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 |
return x; out: x->km.state = XFRM_STATE_DEAD; xfrm_state_put(x); return ERR_PTR(err); } static int pfkey_reserved(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { return -EOPNOTSUPP; } static int pfkey_getspi(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1270 |
struct net *net = sock_net(sk); |
1da177e4c
|
1271 1272 1273 1274 |
struct sk_buff *resp_skb; struct sadb_x_sa2 *sa2; struct sadb_address *saddr, *daddr; struct sadb_msg *out_hdr; |
658b219e9
|
1275 |
struct sadb_spirange *range; |
1da177e4c
|
1276 |
struct xfrm_state *x = NULL; |
55569ce25
|
1277 |
int mode; |
658b219e9
|
1278 1279 |
int err; u32 min_spi, max_spi; |
1da177e4c
|
1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 |
u32 reqid; u8 proto; unsigned short family; xfrm_address_t *xsaddr = NULL, *xdaddr = NULL; if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1])) return -EINVAL; proto = pfkey_satype2proto(hdr->sadb_msg_satype); if (proto == 0) return -EINVAL; if ((sa2 = ext_hdrs[SADB_X_EXT_SA2-1]) != NULL) { |
55569ce25
|
1294 1295 1296 |
mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode); if (mode < 0) return -EINVAL; |
1da177e4c
|
1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 |
reqid = sa2->sadb_x_sa2_reqid; } else { mode = 0; reqid = 0; } saddr = ext_hdrs[SADB_EXT_ADDRESS_SRC-1]; daddr = ext_hdrs[SADB_EXT_ADDRESS_DST-1]; family = ((struct sockaddr *)(saddr + 1))->sa_family; switch (family) { case AF_INET: xdaddr = (xfrm_address_t *)&((struct sockaddr_in *)(daddr + 1))->sin_addr.s_addr; xsaddr = (xfrm_address_t *)&((struct sockaddr_in *)(saddr + 1))->sin_addr.s_addr; break; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: xdaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(daddr + 1))->sin6_addr; xsaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(saddr + 1))->sin6_addr; break; #endif } if (hdr->sadb_msg_seq) { |
07fb0f179
|
1321 |
x = xfrm_find_acq_byseq(net, hdr->sadb_msg_seq); |
1da177e4c
|
1322 1323 1324 1325 1326 1327 1328 |
if (x && xfrm_addr_cmp(&x->id.daddr, xdaddr, family)) { xfrm_state_put(x); x = NULL; } } if (!x) |
07fb0f179
|
1329 |
x = xfrm_find_acq(net, mode, reqid, proto, xdaddr, xsaddr, 1, family); |
1da177e4c
|
1330 1331 1332 |
if (x == NULL) return -ENOENT; |
658b219e9
|
1333 1334 |
min_spi = 0x100; max_spi = 0x0fffffff; |
1da177e4c
|
1335 |
|
658b219e9
|
1336 1337 1338 1339 |
range = ext_hdrs[SADB_EXT_SPIRANGE-1]; if (range) { min_spi = range->sadb_spirange_min; max_spi = range->sadb_spirange_max; |
1da177e4c
|
1340 |
} |
658b219e9
|
1341 1342 |
err = xfrm_alloc_spi(x, min_spi, max_spi); |
050f009e1
|
1343 |
resp_skb = err ? ERR_PTR(err) : pfkey_xfrm_state2msg(x); |
1da177e4c
|
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 |
if (IS_ERR(resp_skb)) { xfrm_state_put(x); return PTR_ERR(resp_skb); } out_hdr = (struct sadb_msg *) resp_skb->data; out_hdr->sadb_msg_version = hdr->sadb_msg_version; out_hdr->sadb_msg_type = SADB_GETSPI; out_hdr->sadb_msg_satype = pfkey_proto2satype(proto); out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_reserved = 0; out_hdr->sadb_msg_seq = hdr->sadb_msg_seq; out_hdr->sadb_msg_pid = hdr->sadb_msg_pid; xfrm_state_put(x); |
07fb0f179
|
1360 |
pfkey_broadcast(resp_skb, GFP_KERNEL, BROADCAST_ONE, sk, net); |
1da177e4c
|
1361 1362 1363 1364 1365 1366 |
return 0; } static int pfkey_acquire(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1367 |
struct net *net = sock_net(sk); |
1da177e4c
|
1368 1369 1370 1371 1372 1373 1374 |
struct xfrm_state *x; if (hdr->sadb_msg_len != sizeof(struct sadb_msg)/8) return -EOPNOTSUPP; if (hdr->sadb_msg_seq == 0 || hdr->sadb_msg_errno == 0) return 0; |
07fb0f179
|
1375 |
x = xfrm_find_acq_byseq(net, hdr->sadb_msg_seq); |
1da177e4c
|
1376 1377 1378 1379 1380 1381 |
if (x == NULL) return 0; spin_lock_bh(&x->lock); if (x->km.state == XFRM_STATE_ACQ) { x->km.state = XFRM_STATE_ERROR; |
07fb0f179
|
1382 |
wake_up(&net->xfrm.km_waitq); |
1da177e4c
|
1383 1384 1385 1386 1387 |
} spin_unlock_bh(&x->lock); xfrm_state_put(x); return 0; } |
26b15dad9
|
1388 1389 1390 |
static inline int event2poltype(int event) { switch (event) { |
f60f6b8f7
|
1391 |
case XFRM_MSG_DELPOLICY: |
26b15dad9
|
1392 |
return SADB_X_SPDDELETE; |
f60f6b8f7
|
1393 |
case XFRM_MSG_NEWPOLICY: |
26b15dad9
|
1394 |
return SADB_X_SPDADD; |
f60f6b8f7
|
1395 |
case XFRM_MSG_UPDPOLICY: |
26b15dad9
|
1396 |
return SADB_X_SPDUPDATE; |
f60f6b8f7
|
1397 |
case XFRM_MSG_POLEXPIRE: |
26b15dad9
|
1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 |
// return SADB_X_SPDEXPIRE; default: printk("pfkey: Unknown policy event %d ", event); break; } return 0; } static inline int event2keytype(int event) { switch (event) { |
f60f6b8f7
|
1411 |
case XFRM_MSG_DELSA: |
26b15dad9
|
1412 |
return SADB_DELETE; |
f60f6b8f7
|
1413 |
case XFRM_MSG_NEWSA: |
26b15dad9
|
1414 |
return SADB_ADD; |
f60f6b8f7
|
1415 |
case XFRM_MSG_UPDSA: |
26b15dad9
|
1416 |
return SADB_UPDATE; |
f60f6b8f7
|
1417 |
case XFRM_MSG_EXPIRE: |
26b15dad9
|
1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 |
return SADB_EXPIRE; default: printk("pfkey: Unknown SA event %d ", event); break; } return 0; } /* ADD/UPD/DEL */ static int key_notify_sa(struct xfrm_state *x, struct km_event *c) { struct sk_buff *skb; struct sadb_msg *hdr; |
26b15dad9
|
1433 |
|
050f009e1
|
1434 |
skb = pfkey_xfrm_state2msg(x); |
26b15dad9
|
1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 |
if (IS_ERR(skb)) return PTR_ERR(skb); hdr = (struct sadb_msg *) skb->data; hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_type = event2keytype(c->event); hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto); hdr->sadb_msg_errno = 0; hdr->sadb_msg_reserved = 0; hdr->sadb_msg_seq = c->seq; hdr->sadb_msg_pid = c->pid; |
07fb0f179
|
1447 |
pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, xs_net(x)); |
26b15dad9
|
1448 1449 1450 |
return 0; } |
1da177e4c
|
1451 1452 1453 |
static int pfkey_add(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1454 |
struct net *net = sock_net(sk); |
1da177e4c
|
1455 1456 |
struct xfrm_state *x; int err; |
26b15dad9
|
1457 |
struct km_event c; |
1da177e4c
|
1458 |
|
07fb0f179
|
1459 |
x = pfkey_msg2xfrm_state(net, hdr, ext_hdrs); |
1da177e4c
|
1460 1461 |
if (IS_ERR(x)) return PTR_ERR(x); |
26b15dad9
|
1462 |
xfrm_state_hold(x); |
1da177e4c
|
1463 1464 1465 1466 |
if (hdr->sadb_msg_type == SADB_ADD) err = xfrm_state_add(x); else err = xfrm_state_update(x); |
ab5f5e8b1
|
1467 |
xfrm_audit_state_add(x, err ? 0 : 1, |
2532386f4
|
1468 1469 |
audit_get_loginuid(current), audit_get_sessionid(current), 0); |
161a09e73
|
1470 |
|
1da177e4c
|
1471 1472 |
if (err < 0) { x->km.state = XFRM_STATE_DEAD; |
21380b81e
|
1473 |
__xfrm_state_put(x); |
7d6dfe1f5
|
1474 |
goto out; |
1da177e4c
|
1475 |
} |
26b15dad9
|
1476 |
if (hdr->sadb_msg_type == SADB_ADD) |
f60f6b8f7
|
1477 |
c.event = XFRM_MSG_NEWSA; |
26b15dad9
|
1478 |
else |
f60f6b8f7
|
1479 |
c.event = XFRM_MSG_UPDSA; |
26b15dad9
|
1480 1481 1482 |
c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; km_state_notify(x, &c); |
7d6dfe1f5
|
1483 |
out: |
26b15dad9
|
1484 |
xfrm_state_put(x); |
26b15dad9
|
1485 |
return err; |
1da177e4c
|
1486 1487 1488 1489 |
} static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1490 |
struct net *net = sock_net(sk); |
1da177e4c
|
1491 |
struct xfrm_state *x; |
26b15dad9
|
1492 1493 |
struct km_event c; int err; |
1da177e4c
|
1494 1495 1496 1497 1498 |
if (!ext_hdrs[SADB_EXT_SA-1] || !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1])) return -EINVAL; |
07fb0f179
|
1499 |
x = pfkey_xfrm_state_lookup(net, hdr, ext_hdrs); |
1da177e4c
|
1500 1501 |
if (x == NULL) return -ESRCH; |
c8c05a8ee
|
1502 1503 |
if ((err = security_xfrm_state_delete(x))) goto out; |
1da177e4c
|
1504 |
if (xfrm_state_kern(x)) { |
c8c05a8ee
|
1505 1506 |
err = -EPERM; goto out; |
1da177e4c
|
1507 |
} |
161a09e73
|
1508 |
|
26b15dad9
|
1509 |
err = xfrm_state_delete(x); |
161a09e73
|
1510 |
|
c8c05a8ee
|
1511 1512 |
if (err < 0) goto out; |
1da177e4c
|
1513 |
|
26b15dad9
|
1514 1515 |
c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; |
f60f6b8f7
|
1516 |
c.event = XFRM_MSG_DELSA; |
26b15dad9
|
1517 |
km_state_notify(x, &c); |
c8c05a8ee
|
1518 |
out: |
ab5f5e8b1
|
1519 |
xfrm_audit_state_delete(x, err ? 0 : 1, |
2532386f4
|
1520 1521 |
audit_get_loginuid(current), audit_get_sessionid(current), 0); |
26b15dad9
|
1522 |
xfrm_state_put(x); |
1da177e4c
|
1523 |
|
26b15dad9
|
1524 |
return err; |
1da177e4c
|
1525 1526 1527 1528 |
} static int pfkey_get(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1529 |
struct net *net = sock_net(sk); |
1da177e4c
|
1530 1531 1532 1533 1534 1535 1536 1537 1538 |
__u8 proto; struct sk_buff *out_skb; struct sadb_msg *out_hdr; struct xfrm_state *x; if (!ext_hdrs[SADB_EXT_SA-1] || !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1])) return -EINVAL; |
07fb0f179
|
1539 |
x = pfkey_xfrm_state_lookup(net, hdr, ext_hdrs); |
1da177e4c
|
1540 1541 |
if (x == NULL) return -ESRCH; |
050f009e1
|
1542 |
out_skb = pfkey_xfrm_state2msg(x); |
1da177e4c
|
1543 1544 1545 1546 1547 1548 1549 |
proto = x->id.proto; xfrm_state_put(x); if (IS_ERR(out_skb)) return PTR_ERR(out_skb); out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = hdr->sadb_msg_version; |
435000beb
|
1550 |
out_hdr->sadb_msg_type = SADB_GET; |
1da177e4c
|
1551 1552 1553 1554 1555 |
out_hdr->sadb_msg_satype = pfkey_proto2satype(proto); out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_reserved = 0; out_hdr->sadb_msg_seq = hdr->sadb_msg_seq; out_hdr->sadb_msg_pid = hdr->sadb_msg_pid; |
07fb0f179
|
1556 |
pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, sk, sock_net(sk)); |
1da177e4c
|
1557 1558 1559 |
return 0; } |
00fa02334
|
1560 |
static struct sk_buff *compose_sadb_supported(struct sadb_msg *orig, |
dd0fc66fb
|
1561 |
gfp_t allocation) |
1da177e4c
|
1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 |
{ struct sk_buff *skb; struct sadb_msg *hdr; int len, auth_len, enc_len, i; auth_len = xfrm_count_auth_supported(); if (auth_len) { auth_len *= sizeof(struct sadb_alg); auth_len += sizeof(struct sadb_supported); } |
8ff24541d
|
1572 |
|
1da177e4c
|
1573 1574 1575 1576 1577 |
enc_len = xfrm_count_enc_supported(); if (enc_len) { enc_len *= sizeof(struct sadb_alg); enc_len += sizeof(struct sadb_supported); } |
8ff24541d
|
1578 |
|
1da177e4c
|
1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 |
len = enc_len + auth_len + sizeof(struct sadb_msg); skb = alloc_skb(len + 16, allocation); if (!skb) goto out_put_algs; hdr = (struct sadb_msg *) skb_put(skb, sizeof(*hdr)); pfkey_hdr_dup(hdr, orig); hdr->sadb_msg_errno = 0; hdr->sadb_msg_len = len / sizeof(uint64_t); if (auth_len) { struct sadb_supported *sp; struct sadb_alg *ap; sp = (struct sadb_supported *) skb_put(skb, auth_len); ap = (struct sadb_alg *) (sp + 1); sp->sadb_supported_len = auth_len / sizeof(uint64_t); sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH; for (i = 0; ; i++) { struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i); if (!aalg) break; if (aalg->available) *ap++ = aalg->desc; } } if (enc_len) { struct sadb_supported *sp; struct sadb_alg *ap; sp = (struct sadb_supported *) skb_put(skb, enc_len); ap = (struct sadb_alg *) (sp + 1); sp->sadb_supported_len = enc_len / sizeof(uint64_t); sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT; for (i = 0; ; i++) { struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i); if (!ealg) break; if (ealg->available) *ap++ = ealg->desc; } } out_put_algs: return skb; } static int pfkey_register(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { struct pfkey_sock *pfk = pfkey_sk(sk); struct sk_buff *supp_skb; if (hdr->sadb_msg_satype > SADB_SATYPE_MAX) return -EINVAL; if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC) { if (pfk->registered&(1<<hdr->sadb_msg_satype)) return -EEXIST; pfk->registered |= (1<<hdr->sadb_msg_satype); } xfrm_probe_algs(); |
8ff24541d
|
1647 |
|
1da177e4c
|
1648 1649 1650 1651 1652 1653 1654 |
supp_skb = compose_sadb_supported(hdr, GFP_KERNEL); if (!supp_skb) { if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC) pfk->registered &= ~(1<<hdr->sadb_msg_satype); return -ENOBUFS; } |
07fb0f179
|
1655 |
pfkey_broadcast(supp_skb, GFP_KERNEL, BROADCAST_REGISTERED, sk, sock_net(sk)); |
1da177e4c
|
1656 1657 1658 |
return 0; } |
26b15dad9
|
1659 1660 1661 1662 1663 1664 1665 1666 1667 |
static int key_notify_sa_flush(struct km_event *c) { struct sk_buff *skb; struct sadb_msg *hdr; skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC); if (!skb) return -ENOBUFS; hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); |
bf08867f9
|
1668 |
hdr->sadb_msg_satype = pfkey_proto2satype(c->data.proto); |
151bb0ffe
|
1669 |
hdr->sadb_msg_type = SADB_FLUSH; |
26b15dad9
|
1670 1671 1672 1673 1674 |
hdr->sadb_msg_seq = c->seq; hdr->sadb_msg_pid = c->pid; hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); |
07fb0f179
|
1675 |
pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); |
26b15dad9
|
1676 1677 1678 |
return 0; } |
1da177e4c
|
1679 1680 |
static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
1681 |
struct net *net = sock_net(sk); |
1da177e4c
|
1682 |
unsigned proto; |
26b15dad9
|
1683 |
struct km_event c; |
161a09e73
|
1684 |
struct xfrm_audit audit_info; |
4aa2e62c4
|
1685 |
int err; |
1da177e4c
|
1686 1687 1688 1689 |
proto = pfkey_satype2proto(hdr->sadb_msg_satype); if (proto == 0) return -EINVAL; |
0c11b9428
|
1690 |
audit_info.loginuid = audit_get_loginuid(current); |
2532386f4
|
1691 |
audit_info.sessionid = audit_get_sessionid(current); |
161a09e73
|
1692 |
audit_info.secid = 0; |
07fb0f179
|
1693 |
err = xfrm_state_flush(net, proto, &audit_info); |
4aa2e62c4
|
1694 1695 |
if (err) return err; |
bf08867f9
|
1696 |
c.data.proto = proto; |
26b15dad9
|
1697 1698 |
c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; |
f60f6b8f7
|
1699 |
c.event = XFRM_MSG_FLUSHSA; |
07fb0f179
|
1700 |
c.net = net; |
26b15dad9
|
1701 |
km_state_notify(NULL, &c); |
1da177e4c
|
1702 1703 1704 |
return 0; } |
1da177e4c
|
1705 1706 |
static int dump_sa(struct xfrm_state *x, int count, void *ptr) { |
83321d6b9
|
1707 |
struct pfkey_sock *pfk = ptr; |
1da177e4c
|
1708 1709 |
struct sk_buff *out_skb; struct sadb_msg *out_hdr; |
83321d6b9
|
1710 1711 |
if (!pfkey_can_dump(&pfk->sk)) return -ENOBUFS; |
050f009e1
|
1712 |
out_skb = pfkey_xfrm_state2msg(x); |
1da177e4c
|
1713 1714 1715 1716 |
if (IS_ERR(out_skb)) return PTR_ERR(out_skb); out_hdr = (struct sadb_msg *) out_skb->data; |
83321d6b9
|
1717 |
out_hdr->sadb_msg_version = pfk->dump.msg_version; |
1da177e4c
|
1718 1719 1720 1721 |
out_hdr->sadb_msg_type = SADB_DUMP; out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto); out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_reserved = 0; |
12a169e7d
|
1722 |
out_hdr->sadb_msg_seq = count + 1; |
83321d6b9
|
1723 |
out_hdr->sadb_msg_pid = pfk->dump.msg_pid; |
12a169e7d
|
1724 1725 1726 |
if (pfk->dump.skb) pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE, |
07fb0f179
|
1727 |
&pfk->sk, sock_net(&pfk->sk)); |
12a169e7d
|
1728 |
pfk->dump.skb = out_skb; |
1da177e4c
|
1729 1730 |
return 0; } |
83321d6b9
|
1731 1732 |
static int pfkey_dump_sa(struct pfkey_sock *pfk) { |
07fb0f179
|
1733 1734 |
struct net *net = sock_net(&pfk->sk); return xfrm_state_walk(net, &pfk->dump.u.state, dump_sa, (void *) pfk); |
83321d6b9
|
1735 1736 1737 1738 1739 1740 |
} static void pfkey_dump_sa_done(struct pfkey_sock *pfk) { xfrm_state_walk_done(&pfk->dump.u.state); } |
1da177e4c
|
1741 1742 1743 |
static int pfkey_dump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { u8 proto; |
83321d6b9
|
1744 1745 1746 1747 |
struct pfkey_sock *pfk = pfkey_sk(sk); if (pfk->dump.dump != NULL) return -EBUSY; |
1da177e4c
|
1748 1749 1750 1751 |
proto = pfkey_satype2proto(hdr->sadb_msg_satype); if (proto == 0) return -EINVAL; |
83321d6b9
|
1752 1753 1754 1755 1756 |
pfk->dump.msg_version = hdr->sadb_msg_version; pfk->dump.msg_pid = hdr->sadb_msg_pid; pfk->dump.dump = pfkey_dump_sa; pfk->dump.done = pfkey_dump_sa_done; xfrm_state_walk_init(&pfk->dump.u.state, proto); |
4c563f766
|
1757 |
|
83321d6b9
|
1758 |
return pfkey_do_dump(pfk); |
1da177e4c
|
1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 |
} static int pfkey_promisc(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { struct pfkey_sock *pfk = pfkey_sk(sk); int satype = hdr->sadb_msg_satype; if (hdr->sadb_msg_len == (sizeof(*hdr) / sizeof(uint64_t))) { /* XXX we mangle packet... */ hdr->sadb_msg_errno = 0; if (satype != 0 && satype != 1) return -EINVAL; pfk->promisc = satype; } |
07fb0f179
|
1773 |
pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, BROADCAST_ALL, NULL, sock_net(sk)); |
1da177e4c
|
1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 |
return 0; } static int check_reqid(struct xfrm_policy *xp, int dir, int count, void *ptr) { int i; u32 reqid = *(u32*)ptr; for (i=0; i<xp->xfrm_nr; i++) { if (xp->xfrm_vec[i].reqid == reqid) return -EEXIST; } return 0; } |
07fb0f179
|
1788 |
static u32 gen_reqid(struct net *net) |
1da177e4c
|
1789 |
{ |
4c563f766
|
1790 |
struct xfrm_policy_walk walk; |
1da177e4c
|
1791 |
u32 start; |
4c563f766
|
1792 |
int rc; |
1da177e4c
|
1793 1794 1795 1796 1797 1798 1799 |
static u32 reqid = IPSEC_MANUAL_REQID_MAX; start = reqid; do { ++reqid; if (reqid == 0) reqid = IPSEC_MANUAL_REQID_MAX+1; |
4c563f766
|
1800 |
xfrm_policy_walk_init(&walk, XFRM_POLICY_TYPE_MAIN); |
07fb0f179
|
1801 |
rc = xfrm_policy_walk(net, &walk, check_reqid, (void*)&reqid); |
4c563f766
|
1802 1803 |
xfrm_policy_walk_done(&walk); if (rc != -EEXIST) |
1da177e4c
|
1804 1805 1806 1807 1808 1809 1810 1811 |
return reqid; } while (reqid != start); return 0; } static int parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq) { |
07fb0f179
|
1812 |
struct net *net = xp_net(xp); |
1da177e4c
|
1813 |
struct xfrm_tmpl *t = xp->xfrm_vec + xp->xfrm_nr; |
55569ce25
|
1814 |
int mode; |
1da177e4c
|
1815 1816 1817 1818 1819 1820 1821 1822 |
if (xp->xfrm_nr >= XFRM_MAX_DEPTH) return -ELOOP; if (rq->sadb_x_ipsecrequest_mode == 0) return -EINVAL; t->id.proto = rq->sadb_x_ipsecrequest_proto; /* XXX check proto */ |
55569ce25
|
1823 1824 1825 |
if ((mode = pfkey_mode_to_xfrm(rq->sadb_x_ipsecrequest_mode)) < 0) return -EINVAL; t->mode = mode; |
1da177e4c
|
1826 1827 1828 1829 1830 1831 |
if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_USE) t->optional = 1; else if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_UNIQUE) { t->reqid = rq->sadb_x_ipsecrequest_reqid; if (t->reqid > IPSEC_MANUAL_REQID_MAX) t->reqid = 0; |
07fb0f179
|
1832 |
if (!t->reqid && !(t->reqid = gen_reqid(net))) |
1da177e4c
|
1833 1834 1835 1836 |
return -ENOBUFS; } /* addresses present only in tunnel mode */ |
7e49e6de3
|
1837 |
if (t->mode == XFRM_MODE_TUNNEL) { |
5f95ac911
|
1838 1839 1840 1841 1842 1843 |
u8 *sa = (u8 *) (rq + 1); int family, socklen; family = pfkey_sockaddr_extract((struct sockaddr *)sa, &t->saddr); if (!family) |
1da177e4c
|
1844 |
return -EINVAL; |
5f95ac911
|
1845 1846 1847 1848 1849 1850 |
socklen = pfkey_sockaddr_len(family); if (pfkey_sockaddr_extract((struct sockaddr *)(sa + socklen), &t->id.daddr) != family) return -EINVAL; t->encap_family = family; |
2718aa7c5
|
1851 1852 |
} else t->encap_family = xp->family; |
1da177e4c
|
1853 |
/* No way to set this via kame pfkey */ |
c5d18e984
|
1854 |
t->allalgs = 1; |
1da177e4c
|
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 |
xp->xfrm_nr++; return 0; } static int parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol) { int err; int len = pol->sadb_x_policy_len*8 - sizeof(struct sadb_x_policy); struct sadb_x_ipsecrequest *rq = (void*)(pol+1); while (len >= sizeof(struct sadb_x_ipsecrequest)) { if ((err = parse_ipsecrequest(xp, rq)) < 0) return err; len -= rq->sadb_x_ipsecrequest_len; rq = (void*)((u8*)rq + rq->sadb_x_ipsecrequest_len); } return 0; } |
df71837d5
|
1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 |
static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy *xp) { struct xfrm_sec_ctx *xfrm_ctx = xp->security; if (xfrm_ctx) { int len = sizeof(struct sadb_x_sec_ctx); len += xfrm_ctx->ctx_len; return PFKEY_ALIGN8(len); } return 0; } |
1da177e4c
|
1885 1886 |
static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp) { |
2718aa7c5
|
1887 |
struct xfrm_tmpl *t; |
1da177e4c
|
1888 |
int sockaddr_size = pfkey_sockaddr_size(xp->family); |
2718aa7c5
|
1889 1890 1891 1892 1893 |
int socklen = 0; int i; for (i=0; i<xp->xfrm_nr; i++) { t = xp->xfrm_vec + i; |
9e8b4ed8b
|
1894 |
socklen += pfkey_sockaddr_len(t->encap_family); |
2718aa7c5
|
1895 |
} |
1da177e4c
|
1896 1897 1898 |
return sizeof(struct sadb_msg) + (sizeof(struct sadb_lifetime) * 3) + |
8ff24541d
|
1899 |
(sizeof(struct sadb_address) * 2) + |
1da177e4c
|
1900 1901 |
(sockaddr_size * 2) + sizeof(struct sadb_x_policy) + |
2718aa7c5
|
1902 1903 |
(xp->xfrm_nr * sizeof(struct sadb_x_ipsecrequest)) + (socklen * 2) + |
df71837d5
|
1904 |
pfkey_xfrm_policy2sec_ctx_size(xp); |
1da177e4c
|
1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 |
} static struct sk_buff * pfkey_xfrm_policy2msg_prep(struct xfrm_policy *xp) { struct sk_buff *skb; int size; size = pfkey_xfrm_policy2msg_size(xp); skb = alloc_skb(size + 16, GFP_ATOMIC); if (skb == NULL) return ERR_PTR(-ENOBUFS); return skb; } |
55569ce25
|
1920 |
static int pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, int dir) |
1da177e4c
|
1921 1922 1923 1924 1925 |
{ struct sadb_msg *hdr; struct sadb_address *addr; struct sadb_lifetime *lifetime; struct sadb_x_policy *pol; |
df71837d5
|
1926 1927 |
struct sadb_x_sec_ctx *sec_ctx; struct xfrm_sec_ctx *xfrm_ctx; |
1da177e4c
|
1928 1929 1930 |
int i; int size; int sockaddr_size = pfkey_sockaddr_size(xp->family); |
9e8b4ed8b
|
1931 |
int socklen = pfkey_sockaddr_len(xp->family); |
1da177e4c
|
1932 1933 1934 1935 1936 1937 1938 1939 |
size = pfkey_xfrm_policy2msg_size(xp); /* call should fill header later */ hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); memset(hdr, 0, size); /* XXX do we need this ? */ /* src address */ |
8ff24541d
|
1940 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
1941 |
sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
1942 |
addr->sadb_address_len = |
1da177e4c
|
1943 1944 1945 1946 1947 1948 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto); addr->sadb_address_prefixlen = xp->selector.prefixlen_s; addr->sadb_address_reserved = 0; |
e5b56652c
|
1949 1950 1951 1952 |
if (!pfkey_sockaddr_fill(&xp->selector.saddr, xp->selector.sport, (struct sockaddr *) (addr + 1), xp->family)) |
1da177e4c
|
1953 1954 1955 |
BUG(); /* dst address */ |
8ff24541d
|
1956 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
1957 1958 1959 1960 1961 1962 |
sizeof(struct sadb_address)+sockaddr_size); addr->sadb_address_len = (sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST; addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto); |
8ff24541d
|
1963 |
addr->sadb_address_prefixlen = xp->selector.prefixlen_d; |
1da177e4c
|
1964 |
addr->sadb_address_reserved = 0; |
e5b56652c
|
1965 1966 1967 1968 |
pfkey_sockaddr_fill(&xp->selector.daddr, xp->selector.dport, (struct sockaddr *) (addr + 1), xp->family); |
1da177e4c
|
1969 1970 |
/* hard time */ |
8ff24541d
|
1971 |
lifetime = (struct sadb_lifetime *) skb_put(skb, |
1da177e4c
|
1972 1973 1974 1975 1976 1977 1978 1979 1980 |
sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD; lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.hard_packet_limit); lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.hard_byte_limit); lifetime->sadb_lifetime_addtime = xp->lft.hard_add_expires_seconds; lifetime->sadb_lifetime_usetime = xp->lft.hard_use_expires_seconds; /* soft time */ |
8ff24541d
|
1981 |
lifetime = (struct sadb_lifetime *) skb_put(skb, |
1da177e4c
|
1982 1983 1984 1985 1986 1987 1988 1989 1990 |
sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT; lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.soft_packet_limit); lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.soft_byte_limit); lifetime->sadb_lifetime_addtime = xp->lft.soft_add_expires_seconds; lifetime->sadb_lifetime_usetime = xp->lft.soft_use_expires_seconds; /* current time */ |
8ff24541d
|
1991 |
lifetime = (struct sadb_lifetime *) skb_put(skb, |
1da177e4c
|
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 |
sizeof(struct sadb_lifetime)); lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime)/sizeof(uint64_t); lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT; lifetime->sadb_lifetime_allocations = xp->curlft.packets; lifetime->sadb_lifetime_bytes = xp->curlft.bytes; lifetime->sadb_lifetime_addtime = xp->curlft.add_time; lifetime->sadb_lifetime_usetime = xp->curlft.use_time; pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy)); pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t); pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; pol->sadb_x_policy_type = IPSEC_POLICY_DISCARD; if (xp->action == XFRM_POLICY_ALLOW) { if (xp->xfrm_nr) pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; else pol->sadb_x_policy_type = IPSEC_POLICY_NONE; } pol->sadb_x_policy_dir = dir+1; pol->sadb_x_policy_id = xp->index; pol->sadb_x_policy_priority = xp->priority; for (i=0; i<xp->xfrm_nr; i++) { struct sadb_x_ipsecrequest *rq; struct xfrm_tmpl *t = xp->xfrm_vec + i; int req_size; |
55569ce25
|
2019 |
int mode; |
1da177e4c
|
2020 2021 |
req_size = sizeof(struct sadb_x_ipsecrequest); |
e5b56652c
|
2022 2023 2024 2025 |
if (t->mode == XFRM_MODE_TUNNEL) { socklen = pfkey_sockaddr_len(t->encap_family); req_size += socklen * 2; } else { |
1da177e4c
|
2026 |
size -= 2*socklen; |
e5b56652c
|
2027 |
} |
1da177e4c
|
2028 2029 2030 2031 2032 |
rq = (void*)skb_put(skb, req_size); pol->sadb_x_policy_len += req_size/8; memset(rq, 0, sizeof(*rq)); rq->sadb_x_ipsecrequest_len = req_size; rq->sadb_x_ipsecrequest_proto = t->id.proto; |
55569ce25
|
2033 2034 |
if ((mode = pfkey_mode_from_xfrm(t->mode)) < 0) return -EINVAL; |
fefaa75e0
|
2035 |
rq->sadb_x_ipsecrequest_mode = mode; |
1da177e4c
|
2036 2037 2038 2039 2040 2041 |
rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_REQUIRE; if (t->reqid) rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE; if (t->optional) rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_USE; rq->sadb_x_ipsecrequest_reqid = t->reqid; |
e5b56652c
|
2042 |
|
7e49e6de3
|
2043 |
if (t->mode == XFRM_MODE_TUNNEL) { |
e5b56652c
|
2044 2045 2046 2047 2048 2049 2050 |
u8 *sa = (void *)(rq + 1); pfkey_sockaddr_fill(&t->saddr, 0, (struct sockaddr *)sa, t->encap_family); pfkey_sockaddr_fill(&t->id.daddr, 0, (struct sockaddr *) (sa + socklen), t->encap_family); |
1da177e4c
|
2051 2052 |
} } |
df71837d5
|
2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 |
/* security context */ if ((xfrm_ctx = xp->security)) { int ctx_size = pfkey_xfrm_policy2sec_ctx_size(xp); sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, ctx_size); sec_ctx->sadb_x_sec_len = ctx_size / sizeof(uint64_t); sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX; sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi; sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg; sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len; memcpy(sec_ctx + 1, xfrm_ctx->ctx_str, xfrm_ctx->ctx_len); } |
1da177e4c
|
2067 2068 |
hdr->sadb_msg_len = size / sizeof(uint64_t); hdr->sadb_msg_reserved = atomic_read(&xp->refcnt); |
55569ce25
|
2069 2070 |
return 0; |
1da177e4c
|
2071 |
} |
26b15dad9
|
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 |
static int key_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c) { struct sk_buff *out_skb; struct sadb_msg *out_hdr; int err; out_skb = pfkey_xfrm_policy2msg_prep(xp); if (IS_ERR(out_skb)) { err = PTR_ERR(out_skb); goto out; } |
55569ce25
|
2083 2084 2085 |
err = pfkey_xfrm_policy2msg(out_skb, xp, dir); if (err < 0) return err; |
26b15dad9
|
2086 2087 2088 |
out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = PF_KEY_V2; |
f60f6b8f7
|
2089 |
if (c->data.byid && c->event == XFRM_MSG_DELPOLICY) |
26b15dad9
|
2090 2091 2092 2093 2094 2095 |
out_hdr->sadb_msg_type = SADB_X_SPDDELETE2; else out_hdr->sadb_msg_type = event2poltype(c->event); out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_seq = c->seq; out_hdr->sadb_msg_pid = c->pid; |
07fb0f179
|
2096 |
pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, NULL, xp_net(xp)); |
26b15dad9
|
2097 2098 2099 2100 |
out: return 0; } |
1da177e4c
|
2101 2102 |
static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
2103 |
struct net *net = sock_net(sk); |
df71837d5
|
2104 |
int err = 0; |
1da177e4c
|
2105 2106 2107 2108 |
struct sadb_lifetime *lifetime; struct sadb_address *sa; struct sadb_x_policy *pol; struct xfrm_policy *xp; |
26b15dad9
|
2109 |
struct km_event c; |
df71837d5
|
2110 |
struct sadb_x_sec_ctx *sec_ctx; |
1da177e4c
|
2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 |
if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1]) || !ext_hdrs[SADB_X_EXT_POLICY-1]) return -EINVAL; pol = ext_hdrs[SADB_X_EXT_POLICY-1]; if (pol->sadb_x_policy_type > IPSEC_POLICY_IPSEC) return -EINVAL; if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX) return -EINVAL; |
07fb0f179
|
2122 |
xp = xfrm_policy_alloc(net, GFP_KERNEL); |
1da177e4c
|
2123 2124 2125 2126 2127 2128 |
if (xp == NULL) return -ENOBUFS; xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ? XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW); xp->priority = pol->sadb_x_policy_priority; |
8ff24541d
|
2129 |
sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1], |
1da177e4c
|
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 |
xp->family = pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.saddr); if (!xp->family) { err = -EINVAL; goto out; } xp->selector.family = xp->family; xp->selector.prefixlen_s = sa->sadb_address_prefixlen; xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); xp->selector.sport = ((struct sockaddr_in *)(sa+1))->sin_port; if (xp->selector.sport) |
8f83f23e6
|
2140 |
xp->selector.sport_mask = htons(0xffff); |
1da177e4c
|
2141 |
|
8ff24541d
|
2142 |
sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1], |
1da177e4c
|
2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 |
pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.daddr); xp->selector.prefixlen_d = sa->sadb_address_prefixlen; /* Amusing, we set this twice. KAME apps appear to set same value * in both addresses. */ xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); xp->selector.dport = ((struct sockaddr_in *)(sa+1))->sin_port; if (xp->selector.dport) |
8f83f23e6
|
2153 |
xp->selector.dport_mask = htons(0xffff); |
1da177e4c
|
2154 |
|
df71837d5
|
2155 2156 2157 2158 2159 2160 2161 2162 |
sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1]; if (sec_ctx != NULL) { struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx); if (!uctx) { err = -ENOBUFS; goto out; } |
03e1ad7b5
|
2163 |
err = security_xfrm_policy_alloc(&xp->security, uctx); |
df71837d5
|
2164 2165 2166 2167 2168 |
kfree(uctx); if (err) goto out; } |
1da177e4c
|
2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 |
xp->lft.soft_byte_limit = XFRM_INF; xp->lft.hard_byte_limit = XFRM_INF; xp->lft.soft_packet_limit = XFRM_INF; xp->lft.hard_packet_limit = XFRM_INF; if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_HARD-1]) != NULL) { xp->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations); xp->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes); xp->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime; xp->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime; } if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_SOFT-1]) != NULL) { xp->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations); xp->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes); xp->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime; xp->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime; } xp->xfrm_nr = 0; if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC && (err = parse_ipsecrequests(xp, pol)) < 0) goto out; |
1da177e4c
|
2189 2190 |
err = xfrm_policy_insert(pol->sadb_x_policy_dir-1, xp, hdr->sadb_msg_type != SADB_X_SPDUPDATE); |
df71837d5
|
2191 |
|
ab5f5e8b1
|
2192 |
xfrm_audit_policy_add(xp, err ? 0 : 1, |
2532386f4
|
2193 2194 |
audit_get_loginuid(current), audit_get_sessionid(current), 0); |
161a09e73
|
2195 |
|
df71837d5
|
2196 2197 |
if (err) goto out; |
1da177e4c
|
2198 |
|
26b15dad9
|
2199 |
if (hdr->sadb_msg_type == SADB_X_SPDUPDATE) |
f60f6b8f7
|
2200 |
c.event = XFRM_MSG_UPDPOLICY; |
8ff24541d
|
2201 |
else |
f60f6b8f7
|
2202 |
c.event = XFRM_MSG_NEWPOLICY; |
1da177e4c
|
2203 |
|
26b15dad9
|
2204 2205 |
c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; |
1da177e4c
|
2206 |
|
26b15dad9
|
2207 2208 |
km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c); xfrm_pol_put(xp); |
1da177e4c
|
2209 2210 2211 |
return 0; out: |
12a169e7d
|
2212 |
xp->walk.dead = 1; |
64c31b3f7
|
2213 |
xfrm_policy_destroy(xp); |
1da177e4c
|
2214 2215 2216 2217 2218 |
return err; } static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
2219 |
struct net *net = sock_net(sk); |
1da177e4c
|
2220 2221 2222 |
int err; struct sadb_address *sa; struct sadb_x_policy *pol; |
03e1ad7b5
|
2223 |
struct xfrm_policy *xp; |
1da177e4c
|
2224 |
struct xfrm_selector sel; |
26b15dad9
|
2225 |
struct km_event c; |
df71837d5
|
2226 |
struct sadb_x_sec_ctx *sec_ctx; |
2db3e47e7
|
2227 |
struct xfrm_sec_ctx *pol_ctx = NULL; |
1da177e4c
|
2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 |
if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1], ext_hdrs[SADB_EXT_ADDRESS_DST-1]) || !ext_hdrs[SADB_X_EXT_POLICY-1]) return -EINVAL; pol = ext_hdrs[SADB_X_EXT_POLICY-1]; if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX) return -EINVAL; memset(&sel, 0, sizeof(sel)); |
8ff24541d
|
2239 |
sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1], |
1da177e4c
|
2240 2241 2242 2243 2244 |
sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr); sel.prefixlen_s = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); sel.sport = ((struct sockaddr_in *)(sa+1))->sin_port; if (sel.sport) |
8f83f23e6
|
2245 |
sel.sport_mask = htons(0xffff); |
1da177e4c
|
2246 |
|
8ff24541d
|
2247 |
sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1], |
1da177e4c
|
2248 2249 2250 2251 2252 |
pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr); sel.prefixlen_d = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); sel.dport = ((struct sockaddr_in *)(sa+1))->sin_port; if (sel.dport) |
8f83f23e6
|
2253 |
sel.dport_mask = htons(0xffff); |
1da177e4c
|
2254 |
|
df71837d5
|
2255 |
sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1]; |
df71837d5
|
2256 2257 2258 2259 2260 |
if (sec_ctx != NULL) { struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx); if (!uctx) return -ENOMEM; |
03e1ad7b5
|
2261 |
err = security_xfrm_policy_alloc(&pol_ctx, uctx); |
df71837d5
|
2262 |
kfree(uctx); |
df71837d5
|
2263 2264 |
if (err) return err; |
2db3e47e7
|
2265 |
} |
161a09e73
|
2266 |
|
07fb0f179
|
2267 |
xp = xfrm_policy_bysel_ctx(net, XFRM_POLICY_TYPE_MAIN, |
03e1ad7b5
|
2268 2269 2270 |
pol->sadb_x_policy_dir - 1, &sel, pol_ctx, 1, &err); security_xfrm_policy_free(pol_ctx); |
1da177e4c
|
2271 2272 |
if (xp == NULL) return -ENOENT; |
ab5f5e8b1
|
2273 |
xfrm_audit_policy_delete(xp, err ? 0 : 1, |
2532386f4
|
2274 2275 |
audit_get_loginuid(current), audit_get_sessionid(current), 0); |
13fcfbb06
|
2276 2277 |
if (err) |
c8c05a8ee
|
2278 |
goto out; |
13fcfbb06
|
2279 |
|
26b15dad9
|
2280 2281 |
c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; |
1839faab9
|
2282 |
c.data.byid = 0; |
f60f6b8f7
|
2283 |
c.event = XFRM_MSG_DELPOLICY; |
26b15dad9
|
2284 |
km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c); |
c8c05a8ee
|
2285 |
out: |
26b15dad9
|
2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 |
xfrm_pol_put(xp); return err; } static int key_pol_get_resp(struct sock *sk, struct xfrm_policy *xp, struct sadb_msg *hdr, int dir) { int err; struct sk_buff *out_skb; struct sadb_msg *out_hdr; err = 0; |
1da177e4c
|
2296 2297 2298 2299 2300 |
out_skb = pfkey_xfrm_policy2msg_prep(xp); if (IS_ERR(out_skb)) { err = PTR_ERR(out_skb); goto out; } |
55569ce25
|
2301 2302 2303 |
err = pfkey_xfrm_policy2msg(out_skb, xp, dir); if (err < 0) goto out; |
1da177e4c
|
2304 2305 2306 |
out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = hdr->sadb_msg_version; |
26b15dad9
|
2307 |
out_hdr->sadb_msg_type = hdr->sadb_msg_type; |
1da177e4c
|
2308 2309 2310 2311 |
out_hdr->sadb_msg_satype = 0; out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_seq = hdr->sadb_msg_seq; out_hdr->sadb_msg_pid = hdr->sadb_msg_pid; |
07fb0f179
|
2312 |
pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, sk, xp_net(xp)); |
1da177e4c
|
2313 2314 2315 |
err = 0; out: |
1da177e4c
|
2316 2317 |
return err; } |
08de61bea
|
2318 2319 2320 |
#ifdef CONFIG_NET_KEY_MIGRATE static int pfkey_sockaddr_pair_size(sa_family_t family) { |
9e8b4ed8b
|
2321 |
return PFKEY_ALIGN8(pfkey_sockaddr_len(family) * 2); |
08de61bea
|
2322 |
} |
13c1d1893
|
2323 |
static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len, |
08de61bea
|
2324 2325 2326 |
xfrm_address_t *saddr, xfrm_address_t *daddr, u16 *family) { |
5f95ac911
|
2327 |
int af, socklen; |
13c1d1893
|
2328 |
if (ext_len < pfkey_sockaddr_pair_size(sa->sa_family)) |
08de61bea
|
2329 |
return -EINVAL; |
13c1d1893
|
2330 |
af = pfkey_sockaddr_extract(sa, saddr); |
5f95ac911
|
2331 2332 2333 2334 |
if (!af) return -EINVAL; socklen = pfkey_sockaddr_len(af); |
13c1d1893
|
2335 |
if (pfkey_sockaddr_extract((struct sockaddr *) (((u8 *)sa) + socklen), |
5f95ac911
|
2336 |
daddr) != af) |
08de61bea
|
2337 |
return -EINVAL; |
08de61bea
|
2338 |
|
5f95ac911
|
2339 |
*family = af; |
08de61bea
|
2340 2341 2342 2343 2344 2345 2346 2347 |
return 0; } static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len, struct xfrm_migrate *m) { int err; struct sadb_x_ipsecrequest *rq2; |
55569ce25
|
2348 |
int mode; |
08de61bea
|
2349 2350 2351 2352 2353 2354 |
if (len <= sizeof(struct sadb_x_ipsecrequest) || len < rq1->sadb_x_ipsecrequest_len) return -EINVAL; /* old endoints */ |
13c1d1893
|
2355 2356 2357 |
err = parse_sockaddr_pair((struct sockaddr *)(rq1 + 1), rq1->sadb_x_ipsecrequest_len, &m->old_saddr, &m->old_daddr, |
08de61bea
|
2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 |
&m->old_family); if (err) return err; rq2 = (struct sadb_x_ipsecrequest *)((u8 *)rq1 + rq1->sadb_x_ipsecrequest_len); len -= rq1->sadb_x_ipsecrequest_len; if (len <= sizeof(struct sadb_x_ipsecrequest) || len < rq2->sadb_x_ipsecrequest_len) return -EINVAL; /* new endpoints */ |
13c1d1893
|
2370 2371 2372 |
err = parse_sockaddr_pair((struct sockaddr *)(rq2 + 1), rq2->sadb_x_ipsecrequest_len, &m->new_saddr, &m->new_daddr, |
08de61bea
|
2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 |
&m->new_family); if (err) return err; if (rq1->sadb_x_ipsecrequest_proto != rq2->sadb_x_ipsecrequest_proto || rq1->sadb_x_ipsecrequest_mode != rq2->sadb_x_ipsecrequest_mode || rq1->sadb_x_ipsecrequest_reqid != rq2->sadb_x_ipsecrequest_reqid) return -EINVAL; m->proto = rq1->sadb_x_ipsecrequest_proto; |
55569ce25
|
2383 2384 2385 |
if ((mode = pfkey_mode_to_xfrm(rq1->sadb_x_ipsecrequest_mode)) < 0) return -EINVAL; m->mode = mode; |
08de61bea
|
2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 |
m->reqid = rq1->sadb_x_ipsecrequest_reqid; return ((int)(rq1->sadb_x_ipsecrequest_len + rq2->sadb_x_ipsecrequest_len)); } static int pfkey_migrate(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { int i, len, ret, err = -EINVAL; u8 dir; struct sadb_address *sa; |
13c1d1893
|
2398 |
struct sadb_x_kmaddress *kma; |
08de61bea
|
2399 2400 2401 2402 |
struct sadb_x_policy *pol; struct sadb_x_ipsecrequest *rq; struct xfrm_selector sel; struct xfrm_migrate m[XFRM_MAX_DEPTH]; |
13c1d1893
|
2403 |
struct xfrm_kmaddress k; |
08de61bea
|
2404 2405 |
if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC - 1], |
13c1d1893
|
2406 |
ext_hdrs[SADB_EXT_ADDRESS_DST - 1]) || |
08de61bea
|
2407 2408 2409 2410 |
!ext_hdrs[SADB_X_EXT_POLICY - 1]) { err = -EINVAL; goto out; } |
13c1d1893
|
2411 |
kma = ext_hdrs[SADB_X_EXT_KMADDRESS - 1]; |
08de61bea
|
2412 |
pol = ext_hdrs[SADB_X_EXT_POLICY - 1]; |
08de61bea
|
2413 2414 2415 2416 2417 |
if (pol->sadb_x_policy_dir >= IPSEC_DIR_MAX) { err = -EINVAL; goto out; } |
13c1d1893
|
2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 |
if (kma) { /* convert sadb_x_kmaddress to xfrm_kmaddress */ k.reserved = kma->sadb_x_kmaddress_reserved; ret = parse_sockaddr_pair((struct sockaddr *)(kma + 1), 8*(kma->sadb_x_kmaddress_len) - sizeof(*kma), &k.local, &k.remote, &k.family); if (ret < 0) { err = ret; goto out; } } |
08de61bea
|
2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 |
dir = pol->sadb_x_policy_dir - 1; memset(&sel, 0, sizeof(sel)); /* set source address info of selector */ sa = ext_hdrs[SADB_EXT_ADDRESS_SRC - 1]; sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr); sel.prefixlen_s = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); sel.sport = ((struct sockaddr_in *)(sa + 1))->sin_port; if (sel.sport) |
582ee43da
|
2439 |
sel.sport_mask = htons(0xffff); |
08de61bea
|
2440 2441 2442 2443 2444 2445 2446 2447 |
/* set destination address info of selector */ sa = ext_hdrs[SADB_EXT_ADDRESS_DST - 1], pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr); sel.prefixlen_d = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); sel.dport = ((struct sockaddr_in *)(sa + 1))->sin_port; if (sel.dport) |
582ee43da
|
2448 |
sel.dport_mask = htons(0xffff); |
08de61bea
|
2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 |
rq = (struct sadb_x_ipsecrequest *)(pol + 1); /* extract ipsecrequests */ i = 0; len = pol->sadb_x_policy_len * 8 - sizeof(struct sadb_x_policy); while (len > 0 && i < XFRM_MAX_DEPTH) { ret = ipsecrequests_to_migrate(rq, len, &m[i]); if (ret < 0) { err = ret; goto out; } else { rq = (struct sadb_x_ipsecrequest *)((u8 *)rq + ret); len -= ret; i++; } } if (!i || len > 0) { err = -EINVAL; goto out; } |
13c1d1893
|
2472 2473 |
return xfrm_migrate(&sel, dir, XFRM_POLICY_TYPE_MAIN, m, i, kma ? &k : NULL); |
08de61bea
|
2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 |
out: return err; } #else static int pfkey_migrate(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { return -ENOPROTOOPT; } #endif |
1da177e4c
|
2485 2486 |
static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
2487 |
struct net *net = sock_net(sk); |
77d8d7a68
|
2488 |
unsigned int dir; |
215a2dd3b
|
2489 |
int err = 0, delete; |
1da177e4c
|
2490 2491 |
struct sadb_x_policy *pol; struct xfrm_policy *xp; |
26b15dad9
|
2492 |
struct km_event c; |
1da177e4c
|
2493 2494 2495 |
if ((pol = ext_hdrs[SADB_X_EXT_POLICY-1]) == NULL) return -EINVAL; |
77d8d7a68
|
2496 2497 2498 |
dir = xfrm_policy_id2dir(pol->sadb_x_policy_id); if (dir >= XFRM_POLICY_MAX) return -EINVAL; |
215a2dd3b
|
2499 |
delete = (hdr->sadb_msg_type == SADB_X_SPDDELETE2); |
07fb0f179
|
2500 |
xp = xfrm_policy_byid(net, XFRM_POLICY_TYPE_MAIN, dir, |
8d1211a6a
|
2501 |
pol->sadb_x_policy_id, delete, &err); |
1da177e4c
|
2502 2503 |
if (xp == NULL) return -ENOENT; |
215a2dd3b
|
2504 |
if (delete) { |
ab5f5e8b1
|
2505 |
xfrm_audit_policy_delete(xp, err ? 0 : 1, |
2532386f4
|
2506 2507 |
audit_get_loginuid(current), audit_get_sessionid(current), 0); |
1da177e4c
|
2508 |
|
215a2dd3b
|
2509 2510 2511 2512 |
if (err) goto out; c.seq = hdr->sadb_msg_seq; c.pid = hdr->sadb_msg_pid; |
bf08867f9
|
2513 |
c.data.byid = 1; |
f60f6b8f7
|
2514 |
c.event = XFRM_MSG_DELPOLICY; |
77d8d7a68
|
2515 |
km_policy_notify(xp, dir, &c); |
26b15dad9
|
2516 |
} else { |
77d8d7a68
|
2517 |
err = key_pol_get_resp(sk, xp, hdr, dir); |
1da177e4c
|
2518 |
} |
1da177e4c
|
2519 |
|
215a2dd3b
|
2520 |
out: |
1da177e4c
|
2521 2522 2523 2524 2525 2526 |
xfrm_pol_put(xp); return err; } static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr) { |
83321d6b9
|
2527 |
struct pfkey_sock *pfk = ptr; |
1da177e4c
|
2528 2529 |
struct sk_buff *out_skb; struct sadb_msg *out_hdr; |
55569ce25
|
2530 |
int err; |
1da177e4c
|
2531 |
|
83321d6b9
|
2532 2533 |
if (!pfkey_can_dump(&pfk->sk)) return -ENOBUFS; |
1da177e4c
|
2534 2535 2536 |
out_skb = pfkey_xfrm_policy2msg_prep(xp); if (IS_ERR(out_skb)) return PTR_ERR(out_skb); |
55569ce25
|
2537 2538 2539 |
err = pfkey_xfrm_policy2msg(out_skb, xp, dir); if (err < 0) return err; |
1da177e4c
|
2540 2541 |
out_hdr = (struct sadb_msg *) out_skb->data; |
83321d6b9
|
2542 |
out_hdr->sadb_msg_version = pfk->dump.msg_version; |
1da177e4c
|
2543 2544 2545 |
out_hdr->sadb_msg_type = SADB_X_SPDDUMP; out_hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC; out_hdr->sadb_msg_errno = 0; |
12a169e7d
|
2546 |
out_hdr->sadb_msg_seq = count + 1; |
83321d6b9
|
2547 |
out_hdr->sadb_msg_pid = pfk->dump.msg_pid; |
12a169e7d
|
2548 2549 2550 |
if (pfk->dump.skb) pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE, |
07fb0f179
|
2551 |
&pfk->sk, sock_net(&pfk->sk)); |
12a169e7d
|
2552 |
pfk->dump.skb = out_skb; |
1da177e4c
|
2553 2554 |
return 0; } |
83321d6b9
|
2555 2556 |
static int pfkey_dump_sp(struct pfkey_sock *pfk) { |
07fb0f179
|
2557 2558 |
struct net *net = sock_net(&pfk->sk); return xfrm_policy_walk(net, &pfk->dump.u.policy, dump_sp, (void *) pfk); |
83321d6b9
|
2559 2560 2561 2562 2563 2564 |
} static void pfkey_dump_sp_done(struct pfkey_sock *pfk) { xfrm_policy_walk_done(&pfk->dump.u.policy); } |
1da177e4c
|
2565 2566 |
static int pfkey_spddump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
83321d6b9
|
2567 |
struct pfkey_sock *pfk = pfkey_sk(sk); |
4c563f766
|
2568 |
|
83321d6b9
|
2569 2570 |
if (pfk->dump.dump != NULL) return -EBUSY; |
1da177e4c
|
2571 |
|
83321d6b9
|
2572 2573 2574 2575 2576 2577 2578 |
pfk->dump.msg_version = hdr->sadb_msg_version; pfk->dump.msg_pid = hdr->sadb_msg_pid; pfk->dump.dump = pfkey_dump_sp; pfk->dump.done = pfkey_dump_sp_done; xfrm_policy_walk_init(&pfk->dump.u.policy, XFRM_POLICY_TYPE_MAIN); return pfkey_do_dump(pfk); |
1da177e4c
|
2579 |
} |
26b15dad9
|
2580 |
static int key_notify_policy_flush(struct km_event *c) |
1da177e4c
|
2581 2582 |
{ struct sk_buff *skb_out; |
26b15dad9
|
2583 |
struct sadb_msg *hdr; |
1da177e4c
|
2584 |
|
26b15dad9
|
2585 |
skb_out = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC); |
1da177e4c
|
2586 2587 |
if (!skb_out) return -ENOBUFS; |
26b15dad9
|
2588 |
hdr = (struct sadb_msg *) skb_put(skb_out, sizeof(struct sadb_msg)); |
151bb0ffe
|
2589 |
hdr->sadb_msg_type = SADB_X_SPDFLUSH; |
26b15dad9
|
2590 2591 2592 2593 2594 |
hdr->sadb_msg_seq = c->seq; hdr->sadb_msg_pid = c->pid; hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_errno = (uint8_t) 0; hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t)); |
07fb0f179
|
2595 |
pfkey_broadcast(skb_out, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net); |
26b15dad9
|
2596 |
return 0; |
1da177e4c
|
2597 |
|
26b15dad9
|
2598 2599 2600 2601 |
} static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { |
07fb0f179
|
2602 |
struct net *net = sock_net(sk); |
26b15dad9
|
2603 |
struct km_event c; |
161a09e73
|
2604 |
struct xfrm_audit audit_info; |
4aa2e62c4
|
2605 |
int err; |
1da177e4c
|
2606 |
|
0c11b9428
|
2607 |
audit_info.loginuid = audit_get_loginuid(current); |
2532386f4
|
2608 |
audit_info.sessionid = audit_get_sessionid(current); |
161a09e73
|
2609 |
audit_info.secid = 0; |
07fb0f179
|
2610 |
err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info); |
4aa2e62c4
|
2611 2612 |
if (err) return err; |
f7b6983f0
|
2613 |
c.data.type = XFRM_POLICY_TYPE_MAIN; |
f60f6b8f7
|
2614 |
c.event = XFRM_MSG_FLUSHPOLICY; |
26b15dad9
|
2615 2616 |
c.pid = hdr->sadb_msg_pid; c.seq = hdr->sadb_msg_seq; |
07fb0f179
|
2617 |
c.net = net; |
26b15dad9
|
2618 |
km_policy_notify(NULL, 0, &c); |
1da177e4c
|
2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 |
return 0; } typedef int (*pfkey_handler)(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs); static pfkey_handler pfkey_funcs[SADB_MAX + 1] = { [SADB_RESERVED] = pfkey_reserved, [SADB_GETSPI] = pfkey_getspi, [SADB_UPDATE] = pfkey_add, [SADB_ADD] = pfkey_add, [SADB_DELETE] = pfkey_delete, [SADB_GET] = pfkey_get, [SADB_ACQUIRE] = pfkey_acquire, [SADB_REGISTER] = pfkey_register, [SADB_EXPIRE] = NULL, [SADB_FLUSH] = pfkey_flush, [SADB_DUMP] = pfkey_dump, [SADB_X_PROMISC] = pfkey_promisc, [SADB_X_PCHANGE] = NULL, [SADB_X_SPDUPDATE] = pfkey_spdadd, [SADB_X_SPDADD] = pfkey_spdadd, [SADB_X_SPDDELETE] = pfkey_spddelete, [SADB_X_SPDGET] = pfkey_spdget, [SADB_X_SPDACQUIRE] = NULL, [SADB_X_SPDDUMP] = pfkey_spddump, [SADB_X_SPDFLUSH] = pfkey_spdflush, [SADB_X_SPDSETIDX] = pfkey_spdadd, [SADB_X_SPDDELETE2] = pfkey_spdget, |
08de61bea
|
2648 |
[SADB_X_MIGRATE] = pfkey_migrate, |
1da177e4c
|
2649 2650 2651 2652 2653 2654 2655 2656 |
}; static int pfkey_process(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr) { void *ext_hdrs[SADB_EXT_MAX]; int err; pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, |
07fb0f179
|
2657 |
BROADCAST_PROMISC_ONLY, NULL, sock_net(sk)); |
1da177e4c
|
2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 |
memset(ext_hdrs, 0, sizeof(ext_hdrs)); err = parse_exthdrs(skb, hdr, ext_hdrs); if (!err) { err = -EOPNOTSUPP; if (pfkey_funcs[hdr->sadb_msg_type]) err = pfkey_funcs[hdr->sadb_msg_type](sk, skb, hdr, ext_hdrs); } return err; } static struct sadb_msg *pfkey_get_base_msg(struct sk_buff *skb, int *errp) { struct sadb_msg *hdr = NULL; if (skb->len < sizeof(*hdr)) { *errp = -EMSGSIZE; } else { hdr = (struct sadb_msg *) skb->data; if (hdr->sadb_msg_version != PF_KEY_V2 || hdr->sadb_msg_reserved != 0 || (hdr->sadb_msg_type <= SADB_RESERVED || hdr->sadb_msg_type > SADB_MAX)) { hdr = NULL; *errp = -EINVAL; } else if (hdr->sadb_msg_len != (skb->len / sizeof(uint64_t)) || hdr->sadb_msg_len < (sizeof(struct sadb_msg) / sizeof(uint64_t))) { hdr = NULL; *errp = -EMSGSIZE; } else { *errp = 0; } } return hdr; } static inline int aalg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d) { |
f398035f2
|
2698 2699 2700 2701 2702 2703 |
unsigned int id = d->desc.sadb_alg_id; if (id >= sizeof(t->aalgos) * 8) return 0; return (t->aalgos >> id) & 1; |
1da177e4c
|
2704 2705 2706 2707 |
} static inline int ealg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d) { |
f398035f2
|
2708 2709 2710 2711 2712 2713 |
unsigned int id = d->desc.sadb_alg_id; if (id >= sizeof(t->ealgos) * 8) return 0; return (t->ealgos >> id) & 1; |
1da177e4c
|
2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 |
} static int count_ah_combs(struct xfrm_tmpl *t) { int i, sz = 0; for (i = 0; ; i++) { struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i); if (!aalg) break; if (aalg_tmpl_set(t, aalg) && aalg->available) sz += sizeof(struct sadb_comb); } return sz + sizeof(struct sadb_prop); } static int count_esp_combs(struct xfrm_tmpl *t) { int i, k, sz = 0; for (i = 0; ; i++) { struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i); if (!ealg) break; |
8ff24541d
|
2738 |
|
1da177e4c
|
2739 2740 |
if (!(ealg_tmpl_set(t, ealg) && ealg->available)) continue; |
8ff24541d
|
2741 |
|
1da177e4c
|
2742 2743 2744 2745 |
for (k = 1; ; k++) { struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k); if (!aalg) break; |
8ff24541d
|
2746 |
|
1da177e4c
|
2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 |
if (aalg_tmpl_set(t, aalg) && aalg->available) sz += sizeof(struct sadb_comb); } } return sz + sizeof(struct sadb_prop); } static void dump_ah_combs(struct sk_buff *skb, struct xfrm_tmpl *t) { struct sadb_prop *p; int i; p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop)); p->sadb_prop_len = sizeof(struct sadb_prop)/8; p->sadb_prop_exttype = SADB_EXT_PROPOSAL; p->sadb_prop_replay = 32; memset(p->sadb_prop_reserved, 0, sizeof(p->sadb_prop_reserved)); for (i = 0; ; i++) { struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i); if (!aalg) break; if (aalg_tmpl_set(t, aalg) && aalg->available) { struct sadb_comb *c; c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb)); memset(c, 0, sizeof(*c)); p->sadb_prop_len += sizeof(struct sadb_comb)/8; c->sadb_comb_auth = aalg->desc.sadb_alg_id; c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits; c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits; c->sadb_comb_hard_addtime = 24*60*60; c->sadb_comb_soft_addtime = 20*60*60; c->sadb_comb_hard_usetime = 8*60*60; c->sadb_comb_soft_usetime = 7*60*60; } } } static void dump_esp_combs(struct sk_buff *skb, struct xfrm_tmpl *t) { struct sadb_prop *p; int i, k; p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop)); p->sadb_prop_len = sizeof(struct sadb_prop)/8; p->sadb_prop_exttype = SADB_EXT_PROPOSAL; p->sadb_prop_replay = 32; memset(p->sadb_prop_reserved, 0, sizeof(p->sadb_prop_reserved)); for (i=0; ; i++) { struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i); if (!ealg) break; |
8ff24541d
|
2801 |
|
1da177e4c
|
2802 2803 |
if (!(ealg_tmpl_set(t, ealg) && ealg->available)) continue; |
8ff24541d
|
2804 |
|
1da177e4c
|
2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 |
for (k = 1; ; k++) { struct sadb_comb *c; struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k); if (!aalg) break; if (!(aalg_tmpl_set(t, aalg) && aalg->available)) continue; c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb)); memset(c, 0, sizeof(*c)); p->sadb_prop_len += sizeof(struct sadb_comb)/8; c->sadb_comb_auth = aalg->desc.sadb_alg_id; c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits; c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits; c->sadb_comb_encrypt = ealg->desc.sadb_alg_id; c->sadb_comb_encrypt_minbits = ealg->desc.sadb_alg_minbits; c->sadb_comb_encrypt_maxbits = ealg->desc.sadb_alg_maxbits; c->sadb_comb_hard_addtime = 24*60*60; c->sadb_comb_soft_addtime = 20*60*60; c->sadb_comb_hard_usetime = 8*60*60; c->sadb_comb_soft_usetime = 7*60*60; } } } |
26b15dad9
|
2828 2829 2830 2831 2832 2833 |
static int key_notify_policy_expire(struct xfrm_policy *xp, struct km_event *c) { return 0; } static int key_notify_sa_expire(struct xfrm_state *x, struct km_event *c) |
1da177e4c
|
2834 2835 2836 |
{ struct sk_buff *out_skb; struct sadb_msg *out_hdr; |
26b15dad9
|
2837 2838 |
int hard; int hsc; |
bf08867f9
|
2839 |
hard = c->data.hard; |
26b15dad9
|
2840 2841 2842 2843 |
if (hard) hsc = 2; else hsc = 1; |
1da177e4c
|
2844 |
|
050f009e1
|
2845 |
out_skb = pfkey_xfrm_state2msg_expire(x, hsc); |
1da177e4c
|
2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 |
if (IS_ERR(out_skb)) return PTR_ERR(out_skb); out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = PF_KEY_V2; out_hdr->sadb_msg_type = SADB_EXPIRE; out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto); out_hdr->sadb_msg_errno = 0; out_hdr->sadb_msg_reserved = 0; out_hdr->sadb_msg_seq = 0; out_hdr->sadb_msg_pid = 0; |
07fb0f179
|
2857 |
pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x)); |
1da177e4c
|
2858 2859 |
return 0; } |
26b15dad9
|
2860 2861 |
static int pfkey_send_notify(struct xfrm_state *x, struct km_event *c) { |
07fb0f179
|
2862 |
struct net *net = x ? xs_net(x) : c->net; |
3fa87a321
|
2863 2864 2865 |
struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); if (atomic_read(&net_pfkey->socks_nr) == 0) |
99c6f60e7
|
2866 |
return 0; |
26b15dad9
|
2867 |
switch (c->event) { |
f60f6b8f7
|
2868 |
case XFRM_MSG_EXPIRE: |
26b15dad9
|
2869 |
return key_notify_sa_expire(x, c); |
f60f6b8f7
|
2870 2871 2872 |
case XFRM_MSG_DELSA: case XFRM_MSG_NEWSA: case XFRM_MSG_UPDSA: |
26b15dad9
|
2873 |
return key_notify_sa(x, c); |
f60f6b8f7
|
2874 |
case XFRM_MSG_FLUSHSA: |
26b15dad9
|
2875 |
return key_notify_sa_flush(c); |
d51d081d6
|
2876 2877 |
case XFRM_MSG_NEWAE: /* not yet supported */ break; |
26b15dad9
|
2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 |
default: printk("pfkey: Unknown SA event %d ", c->event); break; } return 0; } static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c) { |
f7b6983f0
|
2889 2890 |
if (xp && xp->type != XFRM_POLICY_TYPE_MAIN) return 0; |
26b15dad9
|
2891 |
switch (c->event) { |
f60f6b8f7
|
2892 |
case XFRM_MSG_POLEXPIRE: |
26b15dad9
|
2893 |
return key_notify_policy_expire(xp, c); |
f60f6b8f7
|
2894 2895 2896 |
case XFRM_MSG_DELPOLICY: case XFRM_MSG_NEWPOLICY: case XFRM_MSG_UPDPOLICY: |
26b15dad9
|
2897 |
return key_notify_policy(xp, dir, c); |
f60f6b8f7
|
2898 |
case XFRM_MSG_FLUSHPOLICY: |
f7b6983f0
|
2899 2900 |
if (c->data.type != XFRM_POLICY_TYPE_MAIN) break; |
26b15dad9
|
2901 2902 2903 2904 2905 2906 2907 2908 2909 |
return key_notify_policy_flush(c); default: printk("pfkey: Unknown policy event %d ", c->event); break; } return 0; } |
1da177e4c
|
2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 |
static u32 get_acqseq(void) { u32 res; static u32 acqseq; static DEFINE_SPINLOCK(acqseq_lock); spin_lock_bh(&acqseq_lock); res = (++acqseq ? : ++acqseq); spin_unlock_bh(&acqseq_lock); return res; } static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *xp, int dir) { struct sk_buff *skb; struct sadb_msg *hdr; struct sadb_address *addr; struct sadb_x_policy *pol; |
1da177e4c
|
2928 2929 |
int sockaddr_size; int size; |
4e2ba18ea
|
2930 2931 2932 |
struct sadb_x_sec_ctx *sec_ctx; struct xfrm_sec_ctx *xfrm_ctx; int ctx_size = 0; |
8ff24541d
|
2933 |
|
1da177e4c
|
2934 2935 2936 2937 2938 2939 2940 2941 |
sockaddr_size = pfkey_sockaddr_size(x->props.family); if (!sockaddr_size) return -EINVAL; size = sizeof(struct sadb_msg) + (sizeof(struct sadb_address) * 2) + (sockaddr_size * 2) + sizeof(struct sadb_x_policy); |
8ff24541d
|
2942 |
|
1da177e4c
|
2943 2944 2945 2946 |
if (x->id.proto == IPPROTO_AH) size += count_ah_combs(t); else if (x->id.proto == IPPROTO_ESP) size += count_esp_combs(t); |
4e2ba18ea
|
2947 2948 2949 2950 |
if ((xfrm_ctx = x->security)) { ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len); size += sizeof(struct sadb_x_sec_ctx) + ctx_size; } |
1da177e4c
|
2951 2952 2953 |
skb = alloc_skb(size + 16, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; |
8ff24541d
|
2954 |
|
1da177e4c
|
2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 |
hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_type = SADB_ACQUIRE; hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto); hdr->sadb_msg_len = size / sizeof(uint64_t); hdr->sadb_msg_errno = 0; hdr->sadb_msg_reserved = 0; hdr->sadb_msg_seq = x->km.seq = get_acqseq(); hdr->sadb_msg_pid = 0; /* src address */ |
8ff24541d
|
2966 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
2967 |
sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
2968 |
addr->sadb_address_len = |
1da177e4c
|
2969 2970 2971 2972 2973 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; addr->sadb_address_proto = 0; addr->sadb_address_reserved = 0; |
e5b56652c
|
2974 2975 2976 2977 2978 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(&x->props.saddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) |
1da177e4c
|
2979 |
BUG(); |
8ff24541d
|
2980 |
|
1da177e4c
|
2981 |
/* dst address */ |
8ff24541d
|
2982 |
addr = (struct sadb_address*) skb_put(skb, |
1da177e4c
|
2983 2984 2985 2986 2987 2988 2989 |
sizeof(struct sadb_address)+sockaddr_size); addr->sadb_address_len = (sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST; addr->sadb_address_proto = 0; addr->sadb_address_reserved = 0; |
e5b56652c
|
2990 2991 2992 2993 2994 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(&x->id.daddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) |
1da177e4c
|
2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 |
BUG(); pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy)); pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t); pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; pol->sadb_x_policy_dir = dir+1; pol->sadb_x_policy_id = xp->index; /* Set sadb_comb's. */ if (x->id.proto == IPPROTO_AH) dump_ah_combs(skb, t); else if (x->id.proto == IPPROTO_ESP) dump_esp_combs(skb, t); |
4e2ba18ea
|
3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 |
/* security context */ if (xfrm_ctx) { sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, sizeof(struct sadb_x_sec_ctx) + ctx_size); sec_ctx->sadb_x_sec_len = (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t); sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX; sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi; sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg; sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len; memcpy(sec_ctx + 1, xfrm_ctx->ctx_str, xfrm_ctx->ctx_len); } |
07fb0f179
|
3022 |
return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x)); |
1da177e4c
|
3023 |
} |
cb969f072
|
3024 |
static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt, |
8ff24541d
|
3025 |
u8 *data, int len, int *dir) |
1da177e4c
|
3026 |
{ |
07fb0f179
|
3027 |
struct net *net = sock_net(sk); |
1da177e4c
|
3028 3029 |
struct xfrm_policy *xp; struct sadb_x_policy *pol = (struct sadb_x_policy*)data; |
df71837d5
|
3030 |
struct sadb_x_sec_ctx *sec_ctx; |
1da177e4c
|
3031 |
|
cb969f072
|
3032 |
switch (sk->sk_family) { |
1da177e4c
|
3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 |
case AF_INET: if (opt != IP_IPSEC_POLICY) { *dir = -EOPNOTSUPP; return NULL; } break; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: if (opt != IPV6_IPSEC_POLICY) { *dir = -EOPNOTSUPP; return NULL; } break; #endif default: *dir = -EINVAL; return NULL; } *dir = -EINVAL; if (len < sizeof(struct sadb_x_policy) || pol->sadb_x_policy_len*8 > len || pol->sadb_x_policy_type > IPSEC_POLICY_BYPASS || (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir > IPSEC_DIR_OUTBOUND)) return NULL; |
07fb0f179
|
3059 |
xp = xfrm_policy_alloc(net, GFP_ATOMIC); |
1da177e4c
|
3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 |
if (xp == NULL) { *dir = -ENOBUFS; return NULL; } xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ? XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW); xp->lft.soft_byte_limit = XFRM_INF; xp->lft.hard_byte_limit = XFRM_INF; xp->lft.soft_packet_limit = XFRM_INF; xp->lft.hard_packet_limit = XFRM_INF; |
cb969f072
|
3072 |
xp->family = sk->sk_family; |
1da177e4c
|
3073 3074 3075 3076 3077 |
xp->xfrm_nr = 0; if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC && (*dir = parse_ipsecrequests(xp, pol)) < 0) goto out; |
df71837d5
|
3078 3079 3080 3081 3082 3083 3084 3085 3086 |
/* security context too */ if (len >= (pol->sadb_x_policy_len*8 + sizeof(struct sadb_x_sec_ctx))) { char *p = (char *)pol; struct xfrm_user_sec_ctx *uctx; p += pol->sadb_x_policy_len*8; sec_ctx = (struct sadb_x_sec_ctx *)p; if (len < pol->sadb_x_policy_len*8 + |
cb969f072
|
3087 3088 |
sec_ctx->sadb_x_sec_len) { *dir = -EINVAL; |
df71837d5
|
3089 |
goto out; |
cb969f072
|
3090 |
} |
df71837d5
|
3091 3092 3093 |
if ((*dir = verify_sec_ctx_len(p))) goto out; uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx); |
03e1ad7b5
|
3094 |
*dir = security_xfrm_policy_alloc(&xp->security, uctx); |
df71837d5
|
3095 3096 3097 3098 3099 |
kfree(uctx); if (*dir) goto out; } |
1da177e4c
|
3100 3101 3102 3103 |
*dir = pol->sadb_x_policy_dir-1; return xp; out: |
70e90679f
|
3104 |
xp->walk.dead = 1; |
64c31b3f7
|
3105 |
xfrm_policy_destroy(xp); |
1da177e4c
|
3106 3107 |
return NULL; } |
5d36b1803
|
3108 |
static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport) |
1da177e4c
|
3109 3110 3111 3112 3113 3114 |
{ struct sk_buff *skb; struct sadb_msg *hdr; struct sadb_sa *sa; struct sadb_address *addr; struct sadb_x_nat_t_port *n_port; |
1da177e4c
|
3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 |
int sockaddr_size; int size; __u8 satype = (x->id.proto == IPPROTO_ESP ? SADB_SATYPE_ESP : 0); struct xfrm_encap_tmpl *natt = NULL; sockaddr_size = pfkey_sockaddr_size(x->props.family); if (!sockaddr_size) return -EINVAL; if (!satype) return -EINVAL; if (!x->encap) return -EINVAL; natt = x->encap; /* Build an SADB_X_NAT_T_NEW_MAPPING message: * * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) | * ADDRESS_DST (new addr) | NAT_T_DPORT (new port) */ |
8ff24541d
|
3137 |
|
1da177e4c
|
3138 3139 3140 3141 3142 |
size = sizeof(struct sadb_msg) + sizeof(struct sadb_sa) + (sizeof(struct sadb_address) * 2) + (sockaddr_size * 2) + (sizeof(struct sadb_x_nat_t_port) * 2); |
8ff24541d
|
3143 |
|
1da177e4c
|
3144 3145 3146 |
skb = alloc_skb(size + 16, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; |
8ff24541d
|
3147 |
|
1da177e4c
|
3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 |
hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg)); hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_type = SADB_X_NAT_T_NEW_MAPPING; hdr->sadb_msg_satype = satype; hdr->sadb_msg_len = size / sizeof(uint64_t); hdr->sadb_msg_errno = 0; hdr->sadb_msg_reserved = 0; hdr->sadb_msg_seq = x->km.seq = get_acqseq(); hdr->sadb_msg_pid = 0; /* SA */ sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa)); sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t); sa->sadb_sa_exttype = SADB_EXT_SA; sa->sadb_sa_spi = x->id.spi; sa->sadb_sa_replay = 0; sa->sadb_sa_state = 0; sa->sadb_sa_auth = 0; sa->sadb_sa_encrypt = 0; sa->sadb_sa_flags = 0; /* ADDRESS_SRC (old addr) */ addr = (struct sadb_address*) skb_put(skb, sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
3172 |
addr->sadb_address_len = |
1da177e4c
|
3173 3174 3175 3176 3177 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; addr->sadb_address_proto = 0; addr->sadb_address_reserved = 0; |
e5b56652c
|
3178 3179 3180 3181 3182 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(&x->props.saddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) |
1da177e4c
|
3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 |
BUG(); /* NAT_T_SPORT (old port) */ n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port)); n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t); n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT; n_port->sadb_x_nat_t_port_port = natt->encap_sport; n_port->sadb_x_nat_t_port_reserved = 0; /* ADDRESS_DST (new addr) */ addr = (struct sadb_address*) skb_put(skb, sizeof(struct sadb_address)+sockaddr_size); |
8ff24541d
|
3195 |
addr->sadb_address_len = |
1da177e4c
|
3196 3197 3198 3199 3200 |
(sizeof(struct sadb_address)+sockaddr_size)/ sizeof(uint64_t); addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST; addr->sadb_address_proto = 0; addr->sadb_address_reserved = 0; |
e5b56652c
|
3201 3202 3203 3204 3205 |
addr->sadb_address_prefixlen = pfkey_sockaddr_fill(ipaddr, 0, (struct sockaddr *) (addr + 1), x->props.family); if (!addr->sadb_address_prefixlen) |
1da177e4c
|
3206 3207 3208 3209 3210 3211 3212 3213 |
BUG(); /* NAT_T_DPORT (new port) */ n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port)); n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t); n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT; n_port->sadb_x_nat_t_port_port = sport; n_port->sadb_x_nat_t_port_reserved = 0; |
07fb0f179
|
3214 |
return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x)); |
1da177e4c
|
3215 |
} |
08de61bea
|
3216 3217 3218 3219 3220 |
#ifdef CONFIG_NET_KEY_MIGRATE static int set_sadb_address(struct sk_buff *skb, int sasize, int type, struct xfrm_selector *sel) { struct sadb_address *addr; |
08de61bea
|
3221 3222 3223 3224 3225 3226 3227 3228 |
addr = (struct sadb_address *)skb_put(skb, sizeof(struct sadb_address) + sasize); addr->sadb_address_len = (sizeof(struct sadb_address) + sasize)/8; addr->sadb_address_exttype = type; addr->sadb_address_proto = sel->proto; addr->sadb_address_reserved = 0; switch (type) { case SADB_EXT_ADDRESS_SRC: |
e5b56652c
|
3229 3230 3231 3232 |
addr->sadb_address_prefixlen = sel->prefixlen_s; pfkey_sockaddr_fill(&sel->saddr, 0, (struct sockaddr *)(addr + 1), sel->family); |
08de61bea
|
3233 3234 |
break; case SADB_EXT_ADDRESS_DST: |
e5b56652c
|
3235 3236 3237 3238 |
addr->sadb_address_prefixlen = sel->prefixlen_d; pfkey_sockaddr_fill(&sel->daddr, 0, (struct sockaddr *)(addr + 1), sel->family); |
08de61bea
|
3239 3240 3241 3242 3243 3244 3245 |
break; default: return -EINVAL; } return 0; } |
13c1d1893
|
3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 |
static int set_sadb_kmaddress(struct sk_buff *skb, struct xfrm_kmaddress *k) { struct sadb_x_kmaddress *kma; u8 *sa; int family = k->family; int socklen = pfkey_sockaddr_len(family); int size_req; size_req = (sizeof(struct sadb_x_kmaddress) + pfkey_sockaddr_pair_size(family)); kma = (struct sadb_x_kmaddress *)skb_put(skb, size_req); memset(kma, 0, size_req); kma->sadb_x_kmaddress_len = size_req / 8; kma->sadb_x_kmaddress_exttype = SADB_X_EXT_KMADDRESS; kma->sadb_x_kmaddress_reserved = k->reserved; sa = (u8 *)(kma + 1); if (!pfkey_sockaddr_fill(&k->local, 0, (struct sockaddr *)sa, family) || !pfkey_sockaddr_fill(&k->remote, 0, (struct sockaddr *)(sa+socklen), family)) return -EINVAL; return 0; } |
08de61bea
|
3271 3272 3273 3274 3275 3276 |
static int set_ipsecrequest(struct sk_buff *skb, uint8_t proto, uint8_t mode, int level, uint32_t reqid, uint8_t family, xfrm_address_t *src, xfrm_address_t *dst) { struct sadb_x_ipsecrequest *rq; |
e5b56652c
|
3277 3278 |
u8 *sa; int socklen = pfkey_sockaddr_len(family); |
08de61bea
|
3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 |
int size_req; size_req = sizeof(struct sadb_x_ipsecrequest) + pfkey_sockaddr_pair_size(family); rq = (struct sadb_x_ipsecrequest *)skb_put(skb, size_req); memset(rq, 0, size_req); rq->sadb_x_ipsecrequest_len = size_req; rq->sadb_x_ipsecrequest_proto = proto; rq->sadb_x_ipsecrequest_mode = mode; rq->sadb_x_ipsecrequest_level = level; rq->sadb_x_ipsecrequest_reqid = reqid; |
e5b56652c
|
3291 3292 3293 |
sa = (u8 *) (rq + 1); if (!pfkey_sockaddr_fill(src, 0, (struct sockaddr *)sa, family) || !pfkey_sockaddr_fill(dst, 0, (struct sockaddr *)(sa + socklen), family)) |
08de61bea
|
3294 |
return -EINVAL; |
08de61bea
|
3295 3296 3297 3298 3299 3300 3301 |
return 0; } #endif #ifdef CONFIG_NET_KEY_MIGRATE static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type, |
13c1d1893
|
3302 3303 |
struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k) |
08de61bea
|
3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 |
{ int i; int sasize_sel; int size = 0; int size_pol = 0; struct sk_buff *skb; struct sadb_msg *hdr; struct sadb_x_policy *pol; struct xfrm_migrate *mp; if (type != XFRM_POLICY_TYPE_MAIN) return 0; if (num_bundles <= 0 || num_bundles > XFRM_MAX_DEPTH) return -EINVAL; |
13c1d1893
|
3319 3320 3321 3322 3323 |
if (k != NULL) { /* addresses for KM */ size += PFKEY_ALIGN8(sizeof(struct sadb_x_kmaddress) + pfkey_sockaddr_pair_size(k->family)); } |
08de61bea
|
3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 |
/* selector */ sasize_sel = pfkey_sockaddr_size(sel->family); if (!sasize_sel) return -EINVAL; size += (sizeof(struct sadb_address) + sasize_sel) * 2; /* policy info */ size_pol += sizeof(struct sadb_x_policy); /* ipsecrequests */ for (i = 0, mp = m; i < num_bundles; i++, mp++) { /* old locator pair */ size_pol += sizeof(struct sadb_x_ipsecrequest) + pfkey_sockaddr_pair_size(mp->old_family); /* new locator pair */ size_pol += sizeof(struct sadb_x_ipsecrequest) + pfkey_sockaddr_pair_size(mp->new_family); } size += sizeof(struct sadb_msg) + size_pol; /* alloc buffer */ skb = alloc_skb(size, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; hdr = (struct sadb_msg *)skb_put(skb, sizeof(struct sadb_msg)); hdr->sadb_msg_version = PF_KEY_V2; hdr->sadb_msg_type = SADB_X_MIGRATE; hdr->sadb_msg_satype = pfkey_proto2satype(m->proto); hdr->sadb_msg_len = size / 8; hdr->sadb_msg_errno = 0; hdr->sadb_msg_reserved = 0; hdr->sadb_msg_seq = 0; hdr->sadb_msg_pid = 0; |
13c1d1893
|
3359 3360 3361 |
/* Addresses to be used by KM for negotiation, if ext is available */ if (k != NULL && (set_sadb_kmaddress(skb, k) < 0)) return -EINVAL; |
08de61bea
|
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 |
/* selector src */ set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_SRC, sel); /* selector dst */ set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_DST, sel); /* policy information */ pol = (struct sadb_x_policy *)skb_put(skb, sizeof(struct sadb_x_policy)); pol->sadb_x_policy_len = size_pol / 8; pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; pol->sadb_x_policy_dir = dir + 1; pol->sadb_x_policy_id = 0; pol->sadb_x_policy_priority = 0; for (i = 0, mp = m; i < num_bundles; i++, mp++) { /* old ipsecrequest */ |
55569ce25
|
3379 3380 |
int mode = pfkey_mode_from_xfrm(mp->mode); if (mode < 0) |
d4782c323
|
3381 |
goto err; |
55569ce25
|
3382 |
if (set_ipsecrequest(skb, mp->proto, mode, |
08de61bea
|
3383 3384 |
(mp->reqid ? IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE), mp->reqid, mp->old_family, |
d4782c323
|
3385 3386 |
&mp->old_saddr, &mp->old_daddr) < 0) goto err; |
08de61bea
|
3387 3388 |
/* new ipsecrequest */ |
55569ce25
|
3389 |
if (set_ipsecrequest(skb, mp->proto, mode, |
08de61bea
|
3390 3391 |
(mp->reqid ? IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE), mp->reqid, mp->new_family, |
d4782c323
|
3392 3393 |
&mp->new_saddr, &mp->new_daddr) < 0) goto err; |
08de61bea
|
3394 3395 3396 |
} /* broadcast migrate message to sockets */ |
07fb0f179
|
3397 |
pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, &init_net); |
08de61bea
|
3398 3399 |
return 0; |
d4782c323
|
3400 3401 3402 3403 |
err: kfree_skb(skb); return -EINVAL; |
08de61bea
|
3404 3405 3406 |
} #else static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type, |
13c1d1893
|
3407 3408 |
struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k) |
08de61bea
|
3409 3410 3411 3412 |
{ return -ENOPROTOOPT; } #endif |
1da177e4c
|
3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 |
static int pfkey_sendmsg(struct kiocb *kiocb, struct socket *sock, struct msghdr *msg, size_t len) { struct sock *sk = sock->sk; struct sk_buff *skb = NULL; struct sadb_msg *hdr = NULL; int err; err = -EOPNOTSUPP; if (msg->msg_flags & MSG_OOB) goto out; err = -EMSGSIZE; if ((unsigned)len > sk->sk_sndbuf - 32) goto out; err = -ENOBUFS; skb = alloc_skb(len, GFP_KERNEL); if (skb == NULL) goto out; err = -EFAULT; if (memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len)) goto out; hdr = pfkey_get_base_msg(skb, &err); if (!hdr) goto out; |
4a3e2f711
|
3441 |
mutex_lock(&xfrm_cfg_mutex); |
1da177e4c
|
3442 |
err = pfkey_process(sk, skb, hdr); |
4a3e2f711
|
3443 |
mutex_unlock(&xfrm_cfg_mutex); |
1da177e4c
|
3444 3445 3446 3447 |
out: if (err && hdr && pfkey_error(hdr, err, sk) == 0) err = 0; |
6f9610686
|
3448 |
kfree_skb(skb); |
1da177e4c
|
3449 3450 3451 3452 3453 3454 3455 3456 3457 |
return err ? : len; } static int pfkey_recvmsg(struct kiocb *kiocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) { struct sock *sk = sock->sk; |
83321d6b9
|
3458 |
struct pfkey_sock *pfk = pfkey_sk(sk); |
1da177e4c
|
3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 |
struct sk_buff *skb; int copied, err; err = -EINVAL; if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT)) goto out; msg->msg_namelen = 0; skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); if (skb == NULL) goto out; copied = skb->len; if (copied > len) { msg->msg_flags |= MSG_TRUNC; copied = len; } |
badff6d01
|
3476 |
skb_reset_transport_header(skb); |
1da177e4c
|
3477 3478 3479 3480 3481 3482 3483 |
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); if (err) goto out_free; sock_recv_timestamp(msg, sk, skb); err = (flags & MSG_TRUNC) ? skb->len : copied; |
83321d6b9
|
3484 3485 3486 |
if (pfk->dump.dump != NULL && 3 * atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) pfkey_do_dump(pfk); |
1da177e4c
|
3487 3488 3489 3490 3491 |
out_free: skb_free_datagram(sk, skb); out: return err; } |
90ddc4f04
|
3492 |
static const struct proto_ops pfkey_ops = { |
1da177e4c
|
3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 |
.family = PF_KEY, .owner = THIS_MODULE, /* Operations that make no sense on pfkey sockets. */ .bind = sock_no_bind, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = sock_no_getname, .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, .setsockopt = sock_no_setsockopt, .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, /* Now the operations that really occur. */ .release = pfkey_release, .poll = datagram_poll, .sendmsg = pfkey_sendmsg, .recvmsg = pfkey_recvmsg, }; static struct net_proto_family pfkey_family_ops = { .family = PF_KEY, .create = pfkey_create, .owner = THIS_MODULE, }; #ifdef CONFIG_PROC_FS |
bd2f74765
|
3523 |
static int pfkey_seq_show(struct seq_file *f, void *v) |
1da177e4c
|
3524 |
{ |
1da177e4c
|
3525 |
struct sock *s; |
1da177e4c
|
3526 |
|
bd2f74765
|
3527 3528 3529 3530 3531 3532 3533 |
s = (struct sock *)v; if (v == SEQ_START_TOKEN) seq_printf(f ,"sk RefCnt Rmem Wmem User Inode "); else seq_printf(f ,"%p %-6d %-6u %-6u %-6u %-6lu ", |
1da177e4c
|
3534 3535 |
s, atomic_read(&s->sk_refcnt), |
31e6d363a
|
3536 3537 |
sk_rmem_alloc_get(s), sk_wmem_alloc_get(s), |
1da177e4c
|
3538 3539 3540 |
sock_i_uid(s), sock_i_ino(s) ); |
bd2f74765
|
3541 3542 3543 3544 3545 |
return 0; } static void *pfkey_seq_start(struct seq_file *f, loff_t *ppos) { |
7013ec30e
|
3546 |
struct net *net = seq_file_net(f); |
3fa87a321
|
3547 |
struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
bd2f74765
|
3548 3549 3550 |
struct sock *s; struct hlist_node *node; loff_t pos = *ppos; |
1da177e4c
|
3551 |
|
bd2f74765
|
3552 3553 3554 |
read_lock(&pfkey_table_lock); if (pos == 0) return SEQ_START_TOKEN; |
8ff24541d
|
3555 |
|
3fa87a321
|
3556 |
sk_for_each(s, node, &net_pfkey->table) |
bd2f74765
|
3557 3558 |
if (pos-- == 1) return s; |
1da177e4c
|
3559 |
|
bd2f74765
|
3560 3561 3562 3563 3564 |
return NULL; } static void *pfkey_seq_next(struct seq_file *f, void *v, loff_t *ppos) { |
7013ec30e
|
3565 |
struct net *net = seq_file_net(f); |
3fa87a321
|
3566 |
struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
bd2f74765
|
3567 3568 |
++*ppos; return (v == SEQ_START_TOKEN) ? |
3fa87a321
|
3569 |
sk_head(&net_pfkey->table) : |
bd2f74765
|
3570 3571 |
sk_next((struct sock *)v); } |
1da177e4c
|
3572 |
|
bd2f74765
|
3573 3574 3575 3576 |
static void pfkey_seq_stop(struct seq_file *f, void *v) { read_unlock(&pfkey_table_lock); } |
1da177e4c
|
3577 |
|
bd2f74765
|
3578 3579 3580 3581 3582 3583 |
static struct seq_operations pfkey_seq_ops = { .start = pfkey_seq_start, .next = pfkey_seq_next, .stop = pfkey_seq_stop, .show = pfkey_seq_show, }; |
1da177e4c
|
3584 |
|
bd2f74765
|
3585 3586 |
static int pfkey_seq_open(struct inode *inode, struct file *file) { |
7013ec30e
|
3587 3588 |
return seq_open_net(inode, file, &pfkey_seq_ops, sizeof(struct seq_net_private)); |
1da177e4c
|
3589 |
} |
61145aa1a
|
3590 |
|
bd2f74765
|
3591 3592 3593 3594 |
static struct file_operations pfkey_proc_ops = { .open = pfkey_seq_open, .read = seq_read, .llseek = seq_lseek, |
7013ec30e
|
3595 |
.release = seq_release_net, |
bd2f74765
|
3596 |
}; |
7013ec30e
|
3597 |
static int __net_init pfkey_init_proc(struct net *net) |
61145aa1a
|
3598 |
{ |
bd2f74765
|
3599 |
struct proc_dir_entry *e; |
7013ec30e
|
3600 |
e = proc_net_fops_create(net, "pfkey", 0, &pfkey_proc_ops); |
bd2f74765
|
3601 |
if (e == NULL) |
61145aa1a
|
3602 |
return -ENOMEM; |
bd2f74765
|
3603 |
|
bd2f74765
|
3604 |
return 0; |
61145aa1a
|
3605 |
} |
7013ec30e
|
3606 |
static void pfkey_exit_proc(struct net *net) |
61145aa1a
|
3607 |
{ |
7013ec30e
|
3608 |
proc_net_remove(net, "pfkey"); |
61145aa1a
|
3609 3610 |
} #else |
7013ec30e
|
3611 |
static int __net_init pfkey_init_proc(struct net *net) |
61145aa1a
|
3612 3613 3614 |
{ return 0; } |
7013ec30e
|
3615 |
static void pfkey_exit_proc(struct net *net) |
61145aa1a
|
3616 3617 |
{ } |
1da177e4c
|
3618 3619 3620 3621 3622 3623 3624 3625 3626 |
#endif static struct xfrm_mgr pfkeyv2_mgr = { .id = "pfkeyv2", .notify = pfkey_send_notify, .acquire = pfkey_send_acquire, .compile_policy = pfkey_compile_policy, .new_mapping = pfkey_send_new_mapping, |
26b15dad9
|
3627 |
.notify_policy = pfkey_send_policy_notify, |
08de61bea
|
3628 |
.migrate = pfkey_send_migrate, |
1da177e4c
|
3629 |
}; |
3fa87a321
|
3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 |
static int __net_init pfkey_net_init(struct net *net) { struct netns_pfkey *net_pfkey; int rv; net_pfkey = kmalloc(sizeof(struct netns_pfkey), GFP_KERNEL); if (!net_pfkey) { rv = -ENOMEM; goto out_kmalloc; } INIT_HLIST_HEAD(&net_pfkey->table); atomic_set(&net_pfkey->socks_nr, 0); rv = net_assign_generic(net, pfkey_net_id, net_pfkey); if (rv < 0) goto out_assign; |
7013ec30e
|
3645 3646 3647 |
rv = pfkey_init_proc(net); if (rv < 0) goto out_proc; |
3fa87a321
|
3648 |
return 0; |
7013ec30e
|
3649 |
out_proc: |
3fa87a321
|
3650 3651 3652 3653 3654 3655 3656 3657 3658 |
out_assign: kfree(net_pfkey); out_kmalloc: return rv; } static void __net_exit pfkey_net_exit(struct net *net) { struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); |
7013ec30e
|
3659 |
pfkey_exit_proc(net); |
3fa87a321
|
3660 3661 3662 3663 3664 3665 3666 3667 |
BUG_ON(!hlist_empty(&net_pfkey->table)); kfree(net_pfkey); } static struct pernet_operations pfkey_net_ops = { .init = pfkey_net_init, .exit = pfkey_net_exit, }; |
1da177e4c
|
3668 3669 |
static void __exit ipsec_pfkey_exit(void) { |
3fa87a321
|
3670 |
unregister_pernet_gen_subsys(pfkey_net_id, &pfkey_net_ops); |
1da177e4c
|
3671 |
xfrm_unregister_km(&pfkeyv2_mgr); |
1da177e4c
|
3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 |
sock_unregister(PF_KEY); proto_unregister(&key_proto); } static int __init ipsec_pfkey_init(void) { int err = proto_register(&key_proto, 0); if (err != 0) goto out; err = sock_register(&pfkey_family_ops); if (err != 0) goto out_unregister_key_proto; |
1da177e4c
|
3686 3687 |
err = xfrm_register_km(&pfkeyv2_mgr); if (err != 0) |
7013ec30e
|
3688 |
goto out_sock_unregister; |
3fa87a321
|
3689 3690 3691 |
err = register_pernet_gen_subsys(&pfkey_net_id, &pfkey_net_ops); if (err != 0) goto out_xfrm_unregister_km; |
1da177e4c
|
3692 3693 |
out: return err; |
3fa87a321
|
3694 3695 |
out_xfrm_unregister_km: xfrm_unregister_km(&pfkeyv2_mgr); |
1da177e4c
|
3696 |
out_sock_unregister: |
1da177e4c
|
3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 |
sock_unregister(PF_KEY); out_unregister_key_proto: proto_unregister(&key_proto); goto out; } module_init(ipsec_pfkey_init); module_exit(ipsec_pfkey_exit); MODULE_LICENSE("GPL"); MODULE_ALIAS_NETPROTO(PF_KEY); |