1 /*
2 * AppArmor security module
3 *
4 * This file contains AppArmor network mediation definitions.
5 *
6 * Copyright (C) 1998-2008 Novell/SUSE
7 * Copyright 2009-2017 Canonical Ltd.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation, version 2 of the
12 * License.
13 */
14
15 #ifndef __AA_NET_H
16 #define __AA_NET_H
17
18 #include <net/sock.h>
19 #include <linux/path.h>
20
21 #include "apparmorfs.h"
22 #include "label.h"
23 #include "perms.h"
24 #include "policy.h"
25
26 #define AA_MAY_SEND AA_MAY_WRITE
27 #define AA_MAY_RECEIVE AA_MAY_READ
28
29 #define AA_MAY_SHUTDOWN AA_MAY_DELETE
30
31 #define AA_MAY_CONNECT AA_MAY_OPEN
32 #define AA_MAY_ACCEPT 0x00100000
33
34 #define AA_MAY_BIND 0x00200000
35 #define AA_MAY_LISTEN 0x00400000
36
37 #define AA_MAY_SETOPT 0x01000000
38 #define AA_MAY_GETOPT 0x02000000
39
40 #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
41 AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \
42 AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
43 AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
44
45 #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
46 AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
47 AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \
48 AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \
49 AA_MAY_MPROT)
50
51 #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \
52 AA_MAY_ACCEPT)
53 struct aa_sk_ctx {
54 struct aa_label *label;
55 struct aa_label *peer;
56 };
57
58 #define SK_CTX(X) ((X)->sk_security)
59 #define SOCK_ctx(X) SOCK_INODE(X)->i_security
60 #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \
61 struct lsm_network_audit NAME ## _net = { .sk = (SK), \
62 .family = (F)}; \
63 DEFINE_AUDIT_DATA(NAME, \
64 ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
65 LSM_AUDIT_DATA_NONE, \
66 OP); \
67 NAME.u.net = &(NAME ## _net); \
68 aad(&NAME)->net.type = (T); \
69 aad(&NAME)->net.protocol = (P)
70
71 #define DEFINE_AUDIT_SK(NAME, OP, SK) \
72 DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \
73 (SK)->sk_protocol)
74
75
76 #define af_select(FAMILY, FN, DEF_FN) \
77 ({ \
78 int __e; \
79 switch ((FAMILY)) { \
80 default: \
81 __e = DEF_FN; \
82 } \
83 __e; \
84 })
85
86 extern struct aa_sfs_entry aa_sfs_entry_network[];
87
88 void audit_net_cb(struct audit_buffer *ab, void *va);
89 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
90 u32 request, u16 family, int type);
91 int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
92 int type, int protocol);
aa_profile_af_sk_perm(struct aa_profile * profile,struct common_audit_data * sa,u32 request,struct sock * sk)93 static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
94 struct common_audit_data *sa,
95 u32 request,
96 struct sock *sk)
97 {
98 return aa_profile_af_perm(profile, sa, request, sk->sk_family,
99 sk->sk_type);
100 }
101 int aa_sk_perm(const char *op, u32 request, struct sock *sk);
102
103 int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
104 struct socket *sock);
105
106 #endif /* __AA_NET_H */
107
