mirror of
https://gitlab.com/apparmor/apparmor.git
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e92478a9c5
Make it so the parser can properly support network socket mediation in the upstream kernel, MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/521 Signed-off-by: John Johansen <john.johansen@canonical.com>
143 lines
4.1 KiB
C
143 lines
4.1 KiB
C
/*
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* Copyright (c) 2014
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* Canonical, Ltd. (All rights reserved)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, contact Novell, Inc. or Canonical
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* Ltd.
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*/
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#ifndef __AA_NETWORK_H
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#define __AA_NETWORK_H
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#include <fcntl.h>
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#include <netinet/in.h>
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#include <linux/socket.h>
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#include <linux/limits.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "parser.h"
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#include "rule.h"
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#define AA_NET_WRITE 0x0002
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#define AA_NET_SEND AA_NET_WRITE
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#define AA_NET_READ 0x0004
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#define AA_NET_RECEIVE AA_NET_READ
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#define AA_NET_CREATE 0x0010
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#define AA_NET_SHUTDOWN 0x0020 /* alias delete */
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#define AA_NET_CONNECT 0x0040 /* alias open */
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#define AA_NET_SETATTR 0x0100
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#define AA_NET_GETATTR 0x0200
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//#define AA_NET_CHMOD 0x1000 /* pair */
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//#define AA_NET_CHOWN 0x2000 /* pair */
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//#define AA_NET_CHGRP 0x4000 /* pair */
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//#define AA_NET_LOCK 0x8000 /* LINK_SUBSET overlaid */
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#define AA_NET_ACCEPT 0x00100000
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#define AA_NET_BIND 0x00200000
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#define AA_NET_LISTEN 0x00400000
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#define AA_NET_SETOPT 0x01000000
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#define AA_NET_GETOPT 0x02000000
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#define AA_CONT_MATCH 0x08000000
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#define AA_VALID_NET_PERMS (AA_NET_SEND | AA_NET_RECEIVE | AA_NET_CREATE | \
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AA_NET_SHUTDOWN | AA_NET_CONNECT | \
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AA_NET_SETATTR | AA_NET_GETATTR | AA_NET_BIND | \
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AA_NET_ACCEPT | AA_NET_LISTEN | AA_NET_SETOPT | \
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AA_NET_GETOPT | AA_CONT_MATCH)
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#define AA_LOCAL_NET_PERMS (AA_NET_CREATE | AA_NET_SHUTDOWN | AA_NET_SETATTR |\
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AA_NET_GETATTR | AA_NET_BIND | AA_NET_ACCEPT | \
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AA_NET_LISTEN | AA_NET_SETOPT | AA_NET_GETOPT)
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#define AA_NET_OPT (AA_NET_SETOPT | AA_NET_GETOPT)
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#define AA_LOCAL_NET_CMD (AA_NET_LISTEN | AA_NET_OPT)
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#define AA_PEER_NET_PERMS (AA_VALID_NET_PERMS & (~AA_LOCAL_NET_PERMS | \
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AA_NET_ACCEPT))
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struct network_tuple {
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const char *family_name;
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unsigned int family;
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const char *type_name;
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unsigned int type;
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const char *protocol_name;
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unsigned int protocol;
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};
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/* supported AF protocols */
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struct aa_network_entry {
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unsigned int family;
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unsigned int type;
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unsigned int protocol;
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struct aa_network_entry *next;
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};
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static inline uint32_t map_perms(uint32_t mask)
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{
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return (mask & 0x7f) |
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((mask & (AA_NET_GETATTR | AA_NET_SETATTR)) << (AA_OTHER_SHIFT - 8)) |
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((mask & (AA_NET_ACCEPT | AA_NET_BIND | AA_NET_LISTEN)) >> 4) | /* 2 + (AA_OTHER_SHIFT - 20) */
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((mask & (AA_NET_SETOPT | AA_NET_GETOPT)) >> 5); /* 5 + (AA_OTHER_SHIFT - 24) */
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};
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int parse_net_mode(const char *str_mode, int *mode, int fail);
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extern struct aa_network_entry *new_network_ent(unsigned int family,
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unsigned int type,
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unsigned int protocol);
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extern struct aa_network_entry *network_entry(const char *family,
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const char *type,
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const char *protocol);
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extern size_t get_af_max(void);
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void __debug_network(unsigned int *array, const char *name);
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struct network {
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unsigned int *allow; /* array of type masks
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* indexed by AF_FAMILY */
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unsigned int *audit;
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unsigned int *deny;
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unsigned int *quiet;
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network(void) { allow = audit = deny = quiet = NULL; }
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void dump(void) {
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if (allow)
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__debug_network(allow, "Network");
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if (audit)
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__debug_network(audit, "Audit Net");
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if (deny)
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__debug_network(deny, "Deny Net");
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if (quiet)
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__debug_network(quiet, "Quiet Net");
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}
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};
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int net_find_type_val(const char *type);
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const char *net_find_type_name(int type);
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const char *net_find_af_name(unsigned int af);
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const struct network_tuple *net_find_mapping(const struct network_tuple *map,
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const char *family,
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const char *type,
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const char *protocol);
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#endif /* __AA_NETWORK_H */
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