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); 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