1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * AppArmor security module
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * This file contains AppArmor network mediation definitions.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (C) 1998-2008 Novell/SUSE
8*4882a593Smuzhiyun * Copyright 2009-2017 Canonical Ltd.
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #ifndef __AA_NET_H
12*4882a593Smuzhiyun #define __AA_NET_H
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <net/sock.h>
15*4882a593Smuzhiyun #include <linux/path.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include "apparmorfs.h"
18*4882a593Smuzhiyun #include "label.h"
19*4882a593Smuzhiyun #include "perms.h"
20*4882a593Smuzhiyun #include "policy.h"
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #define AA_MAY_SEND AA_MAY_WRITE
23*4882a593Smuzhiyun #define AA_MAY_RECEIVE AA_MAY_READ
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #define AA_MAY_SHUTDOWN AA_MAY_DELETE
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun #define AA_MAY_CONNECT AA_MAY_OPEN
28*4882a593Smuzhiyun #define AA_MAY_ACCEPT 0x00100000
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #define AA_MAY_BIND 0x00200000
31*4882a593Smuzhiyun #define AA_MAY_LISTEN 0x00400000
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #define AA_MAY_SETOPT 0x01000000
34*4882a593Smuzhiyun #define AA_MAY_GETOPT 0x02000000
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
37*4882a593Smuzhiyun AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \
38*4882a593Smuzhiyun AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
39*4882a593Smuzhiyun AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
42*4882a593Smuzhiyun AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
43*4882a593Smuzhiyun AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \
44*4882a593Smuzhiyun AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \
45*4882a593Smuzhiyun AA_MAY_MPROT)
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \
48*4882a593Smuzhiyun AA_MAY_ACCEPT)
49*4882a593Smuzhiyun struct aa_sk_ctx {
50*4882a593Smuzhiyun struct aa_label *label;
51*4882a593Smuzhiyun struct aa_label *peer;
52*4882a593Smuzhiyun };
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun #define SK_CTX(X) ((X)->sk_security)
55*4882a593Smuzhiyun #define SOCK_ctx(X) SOCK_INODE(X)->i_security
56*4882a593Smuzhiyun #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \
57*4882a593Smuzhiyun struct lsm_network_audit NAME ## _net = { .sk = (SK), \
58*4882a593Smuzhiyun .family = (F)}; \
59*4882a593Smuzhiyun DEFINE_AUDIT_DATA(NAME, \
60*4882a593Smuzhiyun ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
61*4882a593Smuzhiyun LSM_AUDIT_DATA_NONE, \
62*4882a593Smuzhiyun OP); \
63*4882a593Smuzhiyun NAME.u.net = &(NAME ## _net); \
64*4882a593Smuzhiyun aad(&NAME)->net.type = (T); \
65*4882a593Smuzhiyun aad(&NAME)->net.protocol = (P)
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun #define DEFINE_AUDIT_SK(NAME, OP, SK) \
68*4882a593Smuzhiyun DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \
69*4882a593Smuzhiyun (SK)->sk_protocol)
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun #define af_select(FAMILY, FN, DEF_FN) \
73*4882a593Smuzhiyun ({ \
74*4882a593Smuzhiyun int __e; \
75*4882a593Smuzhiyun switch ((FAMILY)) { \
76*4882a593Smuzhiyun default: \
77*4882a593Smuzhiyun __e = DEF_FN; \
78*4882a593Smuzhiyun } \
79*4882a593Smuzhiyun __e; \
80*4882a593Smuzhiyun })
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun struct aa_secmark {
83*4882a593Smuzhiyun u8 audit;
84*4882a593Smuzhiyun u8 deny;
85*4882a593Smuzhiyun u32 secid;
86*4882a593Smuzhiyun char *label;
87*4882a593Smuzhiyun };
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun extern struct aa_sfs_entry aa_sfs_entry_network[];
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun void audit_net_cb(struct audit_buffer *ab, void *va);
92*4882a593Smuzhiyun int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
93*4882a593Smuzhiyun u32 request, u16 family, int type);
94*4882a593Smuzhiyun int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
95*4882a593Smuzhiyun int type, int protocol);
aa_profile_af_sk_perm(struct aa_profile * profile,struct common_audit_data * sa,u32 request,struct sock * sk)96*4882a593Smuzhiyun static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
97*4882a593Smuzhiyun struct common_audit_data *sa,
98*4882a593Smuzhiyun u32 request,
99*4882a593Smuzhiyun struct sock *sk)
100*4882a593Smuzhiyun {
101*4882a593Smuzhiyun return aa_profile_af_perm(profile, sa, request, sk->sk_family,
102*4882a593Smuzhiyun sk->sk_type);
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun int aa_sk_perm(const char *op, u32 request, struct sock *sk);
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
107*4882a593Smuzhiyun struct socket *sock);
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
110*4882a593Smuzhiyun u32 secid, struct sock *sk);
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun #endif /* __AA_NET_H */
113