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/*
* Copyright (c) 2023
* Canonical Ltd. (All rights reserved)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, contact Canonical Ltd.
*/
#include "profile.h"
#include "all_rule.h"
#include "af_unix.h"
#include "dbus.h"
#include "io_uring.h"
#include "mqueue.h"
#include "ptrace.h"
#include "signal.h"
#include "userns.h"
#include "mount.h"
#include "parser.h"
#include <iomanip>
#include <string>
#include <iostream>
#include <sstream>
void all_rule::add_implied_rules(Profile &prof)
{
prefix_rule_t *rule;
const prefixes *prefix = this;
rule = new unix_rule(0xffffffff, audit, rule_mode);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new dbus_rule(0, NULL, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new io_uring_rule(0, NULL, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new mqueue_rule(0, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new ptrace_rule(0, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new signal_rule(0, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new userns_rule(0, NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new mnt_rule(NULL, NULL, NULL, NULL, AA_MAY_MOUNT);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new mnt_rule(NULL, NULL, NULL, NULL, AA_DUMMY_REMOUNT);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new mnt_rule(NULL, NULL, NULL, NULL, AA_MAY_UMOUNT);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new mnt_rule(NULL, NULL, NULL, NULL, AA_MAY_PIVOTROOT);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
rule = new network_rule(0, (struct cond_entry *)NULL, (struct cond_entry *)NULL);
(void) rule->add_prefix(*prefix);
prof.rule_ents.push_back(rule);
/* rules that have not been converted to use rule.h */
//file no x
{
const char *error;
struct cod_entry *entry;
char *path = strdup("/{**,}");
int perms = (AA_BASE_PERMS & ~(AA_EXEC_TYPE | AA_MAY_EXEC));
if (rule_mode != RULE_DENY)
/* duplicate to other permission set */
perms |= perms << AA_OTHER_SHIFT;
if (!path)
yyerror(_("Memory allocation error."));
entry = new_entry(path, perms, NULL);
if (!entry_add_prefix(entry, *prefix, error)) {
yyerror(_("%s"), error);
}
add_entry_to_policy(&prof, entry);
}
// lower priority ix
{
const char *error;
struct cod_entry *entry;
char *path = strdup("/{**,}");
int perms = AA_MAY_EXEC;
prefixes ix_prefix;
// TODO:
// need a better way to make sure the prefix is intialized
// without a constructor or copy constructor
ix_prefix.priority = prefix->priority -1;
ix_prefix.audit = prefix->audit;
ix_prefix.rule_mode = prefix->rule_mode;
ix_prefix.owner = prefix->owner;
ix_prefix.priority -= 1;
if (rule_mode != RULE_DENY)
perms |= AA_EXEC_INHERIT;
/* duplicate to other permission set */
perms |= perms << AA_OTHER_SHIFT;
if (!path)
yyerror(_("Memory allocation error."));
entry = new_entry(path, perms, NULL);
if (!entry_add_prefix(entry, ix_prefix, error)) {
yyerror(_("%s"), error);
}
add_entry_to_policy(&prof, entry);
}
// caps
{
if (prefix->owner)
yyerror(_("owner prefix not allowed on capability rules"));
if (rule_mode == RULE_DENY && audit == AUDIT_FORCE) {
prof.caps.deny |= 0xffffffffffffffff;
} else if (rule_mode == RULE_DENY) {
prof.caps.deny |= 0xffffffffffffffff;
prof.caps.quiet |= 0xffffffffffffffff;
} else {
prof.caps.allow |= 0xffffffffffffffff;
if (audit != AUDIT_UNSPECIFIED)
prof.caps.audit |= 0xffffffffffffffff;
}
}
// TODO: rlimit
}
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