1b886d83cSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 256974a6fSJohn Johansen /* 356974a6fSJohn Johansen * AppArmor security module 456974a6fSJohn Johansen * 556974a6fSJohn Johansen * This file contains AppArmor network mediation definitions. 656974a6fSJohn Johansen * 756974a6fSJohn Johansen * Copyright (C) 1998-2008 Novell/SUSE 856974a6fSJohn Johansen * Copyright 2009-2017 Canonical Ltd. 956974a6fSJohn Johansen */ 1056974a6fSJohn Johansen 1156974a6fSJohn Johansen #ifndef __AA_NET_H 1256974a6fSJohn Johansen #define __AA_NET_H 1356974a6fSJohn Johansen 1456974a6fSJohn Johansen #include <net/sock.h> 1556974a6fSJohn Johansen #include <linux/path.h> 1656974a6fSJohn Johansen 1756974a6fSJohn Johansen #include "apparmorfs.h" 1856974a6fSJohn Johansen #include "label.h" 1956974a6fSJohn Johansen #include "perms.h" 2056974a6fSJohn Johansen #include "policy.h" 2156974a6fSJohn Johansen 2256974a6fSJohn Johansen #define AA_MAY_SEND AA_MAY_WRITE 2356974a6fSJohn Johansen #define AA_MAY_RECEIVE AA_MAY_READ 2456974a6fSJohn Johansen 2556974a6fSJohn Johansen #define AA_MAY_SHUTDOWN AA_MAY_DELETE 2656974a6fSJohn Johansen 2756974a6fSJohn Johansen #define AA_MAY_CONNECT AA_MAY_OPEN 2856974a6fSJohn Johansen #define AA_MAY_ACCEPT 0x00100000 2956974a6fSJohn Johansen 3056974a6fSJohn Johansen #define AA_MAY_BIND 0x00200000 3156974a6fSJohn Johansen #define AA_MAY_LISTEN 0x00400000 3256974a6fSJohn Johansen 3356974a6fSJohn Johansen #define AA_MAY_SETOPT 0x01000000 3456974a6fSJohn Johansen #define AA_MAY_GETOPT 0x02000000 3556974a6fSJohn Johansen 3656974a6fSJohn Johansen #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \ 3756974a6fSJohn Johansen AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \ 3856974a6fSJohn Johansen AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \ 3956974a6fSJohn Johansen AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT) 4056974a6fSJohn Johansen 4156974a6fSJohn Johansen #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \ 4256974a6fSJohn Johansen AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\ 4356974a6fSJohn Johansen AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \ 4456974a6fSJohn Johansen AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \ 4556974a6fSJohn Johansen AA_MAY_MPROT) 4656974a6fSJohn Johansen 4756974a6fSJohn Johansen #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \ 4856974a6fSJohn Johansen AA_MAY_ACCEPT) 4956974a6fSJohn Johansen struct aa_sk_ctx { 5056974a6fSJohn Johansen struct aa_label *label; 5156974a6fSJohn Johansen struct aa_label *peer; 5256974a6fSJohn Johansen }; 5356974a6fSJohn Johansen 5456974a6fSJohn Johansen #define SK_CTX(X) ((X)->sk_security) 5556974a6fSJohn Johansen #define SOCK_ctx(X) SOCK_INODE(X)->i_security 5656974a6fSJohn Johansen #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \ 5756974a6fSJohn Johansen struct lsm_network_audit NAME ## _net = { .sk = (SK), \ 5856974a6fSJohn Johansen .family = (F)}; \ 5956974a6fSJohn Johansen DEFINE_AUDIT_DATA(NAME, \ 6056974a6fSJohn Johansen ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \ 6156974a6fSJohn Johansen LSM_AUDIT_DATA_NONE, \ 62*8c4b785aSJohn Johansen AA_CLASS_NET, \ 6356974a6fSJohn Johansen OP); \ 6456974a6fSJohn Johansen NAME.u.net = &(NAME ## _net); \ 6556974a6fSJohn Johansen aad(&NAME)->net.type = (T); \ 6656974a6fSJohn Johansen aad(&NAME)->net.protocol = (P) 6756974a6fSJohn Johansen 6856974a6fSJohn Johansen #define DEFINE_AUDIT_SK(NAME, OP, SK) \ 6956974a6fSJohn Johansen DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \ 7056974a6fSJohn Johansen (SK)->sk_protocol) 7156974a6fSJohn Johansen 7256974a6fSJohn Johansen 7356974a6fSJohn Johansen #define af_select(FAMILY, FN, DEF_FN) \ 7456974a6fSJohn Johansen ({ \ 7556974a6fSJohn Johansen int __e; \ 7656974a6fSJohn Johansen switch ((FAMILY)) { \ 7756974a6fSJohn Johansen default: \ 7856974a6fSJohn Johansen __e = DEF_FN; \ 7956974a6fSJohn Johansen } \ 8056974a6fSJohn Johansen __e; \ 8156974a6fSJohn Johansen }) 8256974a6fSJohn Johansen 839caafbe2SMatthew Garrett struct aa_secmark { 849caafbe2SMatthew Garrett u8 audit; 859caafbe2SMatthew Garrett u8 deny; 869caafbe2SMatthew Garrett u32 secid; 879caafbe2SMatthew Garrett char *label; 889caafbe2SMatthew Garrett }; 899caafbe2SMatthew Garrett 9056974a6fSJohn Johansen extern struct aa_sfs_entry aa_sfs_entry_network[]; 9156974a6fSJohn Johansen 9256974a6fSJohn Johansen void audit_net_cb(struct audit_buffer *ab, void *va); 9356974a6fSJohn Johansen int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa, 9456974a6fSJohn Johansen u32 request, u16 family, int type); 9556974a6fSJohn Johansen int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family, 9656974a6fSJohn Johansen int type, int protocol); 9756974a6fSJohn Johansen static inline int aa_profile_af_sk_perm(struct aa_profile *profile, 9856974a6fSJohn Johansen struct common_audit_data *sa, 9956974a6fSJohn Johansen u32 request, 10056974a6fSJohn Johansen struct sock *sk) 10156974a6fSJohn Johansen { 10256974a6fSJohn Johansen return aa_profile_af_perm(profile, sa, request, sk->sk_family, 10356974a6fSJohn Johansen sk->sk_type); 10456974a6fSJohn Johansen } 10556974a6fSJohn Johansen int aa_sk_perm(const char *op, u32 request, struct sock *sk); 10656974a6fSJohn Johansen 10756974a6fSJohn Johansen int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request, 10856974a6fSJohn Johansen struct socket *sock); 10956974a6fSJohn Johansen 1109caafbe2SMatthew Garrett int apparmor_secmark_check(struct aa_label *label, char *op, u32 request, 11141dd9596SFlorian Westphal u32 secid, const struct sock *sk); 1129caafbe2SMatthew Garrett 11356974a6fSJohn Johansen #endif /* __AA_NET_H */ 114