1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * AppArmor security module
4 *
5 * This file contains AppArmor network mediation definitions.
6 *
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2017 Canonical Ltd.
9 */
10
11 #ifndef __AA_NET_H
12 #define __AA_NET_H
13
14 #include <net/sock.h>
15 #include <linux/path.h>
16
17 #include "apparmorfs.h"
18 #include "label.h"
19 #include "perms.h"
20 #include "policy.h"
21
22 #define AA_MAY_SEND AA_MAY_WRITE
23 #define AA_MAY_RECEIVE AA_MAY_READ
24
25 #define AA_MAY_SHUTDOWN AA_MAY_DELETE
26
27 #define AA_MAY_CONNECT AA_MAY_OPEN
28 #define AA_MAY_ACCEPT 0x00100000
29
30 #define AA_MAY_BIND 0x00200000
31 #define AA_MAY_LISTEN 0x00400000
32
33 #define AA_MAY_SETOPT 0x01000000
34 #define AA_MAY_GETOPT 0x02000000
35
36 #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
37 AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \
38 AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
39 AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
40
41 #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
42 AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
43 AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \
44 AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \
45 AA_MAY_MPROT)
46
47 #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \
48 AA_MAY_ACCEPT)
49 struct aa_sk_ctx {
50 struct aa_label *label;
51 struct aa_label *peer;
52 };
53
54 #define SK_CTX(X) ((X)->sk_security)
55 #define SOCK_ctx(X) SOCK_INODE(X)->i_security
56 #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \
57 struct lsm_network_audit NAME ## _net = { .sk = (SK), \
58 .family = (F)}; \
59 DEFINE_AUDIT_DATA(NAME, \
60 ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
61 LSM_AUDIT_DATA_NONE, \
62 OP); \
63 NAME.u.net = &(NAME ## _net); \
64 aad(&NAME)->net.type = (T); \
65 aad(&NAME)->net.protocol = (P)
66
67 #define DEFINE_AUDIT_SK(NAME, OP, SK) \
68 DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \
69 (SK)->sk_protocol)
70
71
72 #define af_select(FAMILY, FN, DEF_FN) \
73 ({ \
74 int __e; \
75 switch ((FAMILY)) { \
76 default: \
77 __e = DEF_FN; \
78 } \
79 __e; \
80 })
81
82 struct aa_secmark {
83 u8 audit;
84 u8 deny;
85 u32 secid;
86 char *label;
87 };
88
89 extern struct aa_sfs_entry aa_sfs_entry_network[];
90
91 void audit_net_cb(struct audit_buffer *ab, void *va);
92 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
93 u32 request, u16 family, int type);
94 int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
95 int type, int protocol);
aa_profile_af_sk_perm(struct aa_profile * profile,struct common_audit_data * sa,u32 request,struct sock * sk)96 static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
97 struct common_audit_data *sa,
98 u32 request,
99 struct sock *sk)
100 {
101 return aa_profile_af_perm(profile, sa, request, sk->sk_family,
102 sk->sk_type);
103 }
104 int aa_sk_perm(const char *op, u32 request, struct sock *sk);
105
106 int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
107 struct socket *sock);
108
109 int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
110 u32 secid, struct sock *sk);
111
112 #endif /* __AA_NET_H */
113