1332 lines
30 KiB
C
1332 lines
30 KiB
C
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/*
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* Author : Stephen Smalley, <sds@tycho.nsa.gov>
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*/
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/*
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* Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
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*
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* Support for enhanced MLS infrastructure.
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*
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* Updated: Karl MacMillan <kmacmillan@tresys.com>
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*
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* Added conditional policy language extensions
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*
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* Updated: James Morris <jmorris@intercode.com.au>
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*
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* Added IPv6 support.
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*
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* Updated: Joshua Brindle <jbrindle@tresys.com>
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* Karl MacMillan <kmacmillan@tresys.com>
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* Jason Tang <jtang@tresys.com>
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*
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* Policy Module support.
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*
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* Copyright (C) 2017 Mellanox Technologies Inc.
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* Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
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* Copyright (C) 2003 - 2005 Tresys Technology, LLC
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* Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2.
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*/
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/* FLASK */
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/*
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* checkpolicy
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*
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* Load and check a policy configuration.
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*
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* A policy configuration is created in a text format,
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* and then compiled into a binary format for use by
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* the security server. By default, checkpolicy reads
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* the text format. If '-b' is specified, then checkpolicy
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* reads the binary format instead.
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*
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* If '-o output_file' is specified, then checkpolicy
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* writes the binary format version of the configuration
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* to the specified output file.
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*
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* If '-d' is specified, then checkpolicy permits the user
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* to interactively test the security server functions with
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* the loaded policy configuration.
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*
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* If '-c' is specified, then the supplied parameter is used to
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* determine which policy version to use for generating binary
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* policy. This is for compatibility with older kernels. If any
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* booleans or conditional rules are thrown away a warning is printed.
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*/
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#include <ctype.h>
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#include <getopt.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#ifndef IPPROTO_DCCP
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#define IPPROTO_DCCP 33
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#endif
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#ifndef IPPROTO_SCTP
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#define IPPROTO_SCTP 132
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#endif
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <sepol/module_to_cil.h>
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#include <sepol/kernel_to_cil.h>
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#include <sepol/kernel_to_conf.h>
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#include <sepol/policydb/policydb.h>
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#include <sepol/policydb/services.h>
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#include <sepol/policydb/conditional.h>
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#include <sepol/policydb/hierarchy.h>
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#include <sepol/policydb/expand.h>
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#include <sepol/policydb/link.h>
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#include "queue.h"
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#include "checkpolicy.h"
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#include "parse_util.h"
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static policydb_t policydb;
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static sidtab_t sidtab;
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extern policydb_t *policydbp;
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extern int mlspol;
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extern int werror;
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static int handle_unknown = SEPOL_DENY_UNKNOWN;
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static const char *txtfile = "policy.conf";
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static const char *binfile = "policy";
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unsigned int policyvers = 0;
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static __attribute__((__noreturn__)) void usage(const char *progname)
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{
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printf
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("usage: %s [-b[F]] [-C] [-d] [-U handle_unknown (allow,deny,reject)] [-M] "
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"[-c policyvers (%d-%d)] [-o output_file|-] [-S] [-O]"
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"[-t target_platform (selinux,xen)] [-E] [-V] [input_file]\n",
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progname, POLICYDB_VERSION_MIN, POLICYDB_VERSION_MAX);
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exit(1);
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}
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#define FGETS(out, size, in) \
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do { \
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if (fgets(out,size,in)==NULL) { \
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fprintf(stderr, "fgets failed at line %d: %s\n", __LINE__, \
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strerror(errno)); \
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exit(1);\
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} \
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} while (0)
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static int print_sid(sepol_security_id_t sid,
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context_struct_t * context
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__attribute__ ((unused)), void *data
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__attribute__ ((unused)))
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{
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sepol_security_context_t scontext;
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size_t scontext_len;
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int rc;
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rc = sepol_sid_to_context(sid, &scontext, &scontext_len);
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if (rc)
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printf("sid %d -> error %d\n", sid, rc);
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else {
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printf("sid %d -> scontext %s\n", sid, scontext);
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free(scontext);
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}
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return 0;
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}
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struct val_to_name {
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unsigned int val;
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char *name;
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};
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static int find_perm(hashtab_key_t key, hashtab_datum_t datum, void *p)
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{
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struct val_to_name *v = p;
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perm_datum_t *perdatum;
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perdatum = (perm_datum_t *) datum;
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if (v->val == perdatum->s.value) {
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v->name = key;
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return 1;
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}
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return 0;
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}
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#ifdef EQUIVTYPES
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static int insert_type_rule(avtab_key_t * k, avtab_datum_t * d,
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struct avtab_node *type_rules)
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{
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struct avtab_node *p, *c, *n;
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for (p = type_rules, c = type_rules->next; c; p = c, c = c->next) {
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/*
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* Find the insertion point, keeping the list
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* ordered by source type, then target type, then
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* target class.
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*/
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if (k->source_type < c->key.source_type)
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break;
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if (k->source_type == c->key.source_type &&
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k->target_type < c->key.target_type)
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break;
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if (k->source_type == c->key.source_type &&
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k->target_type == c->key.target_type &&
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k->target_class < c->key.target_class)
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break;
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}
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/* Insert the rule */
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n = malloc(sizeof(struct avtab_node));
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if (!n) {
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fprintf(stderr, "out of memory\n");
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exit(1);
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}
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n->key = *k;
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n->datum = *d;
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n->next = p->next;
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p->next = n;
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return 0;
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}
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static int create_type_rules(avtab_key_t * k, avtab_datum_t * d, void *args)
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{
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struct avtab_node *type_rules = args;
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if (d->specified & AVTAB_ALLOWED) {
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/*
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* Insert the rule into the lists for both
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* the source type and the target type.
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*/
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if (insert_type_rule(k, d, &type_rules[k->source_type - 1]))
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return -1;
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if (insert_type_rule(k, d, &type_rules[k->target_type - 1]))
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return -1;
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}
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return 0;
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}
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static void free_type_rules(struct avtab_node *l)
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{
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struct avtab_node *tmp;
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while (l) {
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tmp = l;
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l = l->next;
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free(tmp);
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}
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}
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static int identify_equiv_types(void)
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{
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struct avtab_node *type_rules, *l1, *l2;
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int i, j;
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/*
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* Create a list of access vector rules for each type
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* from the access vector table.
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*/
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type_rules = malloc(sizeof(struct avtab_node) * policydb.p_types.nprim);
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if (!type_rules) {
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fprintf(stderr, "out of memory\n");
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exit(1);
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}
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memset(type_rules, 0,
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sizeof(struct avtab_node) * policydb.p_types.nprim);
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if (avtab_map(&policydb.te_avtab, create_type_rules, type_rules))
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exit(1);
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/*
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* Compare the type lists and identify equivalent types.
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*/
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for (i = 0; i < policydb.p_types.nprim - 1; i++) {
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if (!type_rules[i].next)
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continue;
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for (j = i + 1; j < policydb.p_types.nprim; j++) {
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for (l1 = type_rules[i].next, l2 = type_rules[j].next;
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l1 && l2; l1 = l1->next, l2 = l2->next) {
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if (l2->key.source_type == (j + 1)) {
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if (l1->key.source_type != (i + 1))
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break;
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} else {
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if (l1->key.source_type !=
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l2->key.source_type)
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break;
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}
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if (l2->key.target_type == (j + 1)) {
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if (l1->key.target_type != (i + 1))
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break;
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} else {
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if (l1->key.target_type !=
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l2->key.target_type)
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break;
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}
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if (l1->key.target_class != l2->key.target_class
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|| l1->datum.allowed != l2->datum.allowed)
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break;
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}
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if (l1 || l2)
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continue;
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free_type_rules(type_rules[j].next);
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type_rules[j].next = NULL;
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printf("Types %s and %s are equivalent.\n",
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policydb.p_type_val_to_name[i],
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policydb.p_type_val_to_name[j]);
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}
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free_type_rules(type_rules[i].next);
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type_rules[i].next = NULL;
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}
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free(type_rules);
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return 0;
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}
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#endif
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static int display_bools(void)
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{
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uint32_t i;
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for (i = 0; i < policydbp->p_bools.nprim; i++) {
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printf("%s : %d\n", policydbp->p_bool_val_to_name[i],
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policydbp->bool_val_to_struct[i]->state);
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}
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return 0;
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}
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static void display_expr(const cond_expr_t * exp)
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{
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const cond_expr_t *cur;
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for (cur = exp; cur != NULL; cur = cur->next) {
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switch (cur->expr_type) {
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case COND_BOOL:
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printf("%s ",
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policydbp->p_bool_val_to_name[cur->bool - 1]);
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break;
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case COND_NOT:
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printf("! ");
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break;
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case COND_OR:
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printf("|| ");
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break;
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case COND_AND:
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printf("&& ");
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break;
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case COND_XOR:
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printf("^ ");
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break;
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case COND_EQ:
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printf("== ");
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break;
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case COND_NEQ:
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printf("!= ");
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break;
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default:
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printf("error!");
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break;
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}
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}
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}
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static int display_cond_expressions(void)
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{
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const cond_node_t *cur;
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for (cur = policydbp->cond_list; cur != NULL; cur = cur->next) {
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printf("expression: ");
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display_expr(cur->expr);
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printf("current state: %d\n", cur->cur_state);
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}
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return 0;
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}
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static int change_bool(const char *name, int state)
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{
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cond_bool_datum_t *bool;
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bool = hashtab_search(policydbp->p_bools.table, name);
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if (bool == NULL) {
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printf("Could not find bool %s\n", name);
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return -1;
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}
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bool->state = state;
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evaluate_conds(policydbp);
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return 0;
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}
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static int check_level(hashtab_key_t key, hashtab_datum_t datum, void *arg __attribute__ ((unused)))
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{
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level_datum_t *levdatum = (level_datum_t *) datum;
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if (!levdatum->isalias && !levdatum->defined) {
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fprintf(stderr,
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"Error: sensitivity %s was not used in a level definition!\n",
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key);
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return -1;
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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policydb_t parse_policy;
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sepol_security_class_t tclass;
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sepol_security_id_t ssid, tsid, *sids, oldsid, newsid, tasksid;
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sepol_security_context_t scontext;
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struct sepol_av_decision avd;
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class_datum_t *cladatum;
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const char *file = txtfile;
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char ans[80 + 1], *path, *fstype;
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const char *outfile = NULL;
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size_t scontext_len, pathlen;
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unsigned int i;
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unsigned int protocol, port;
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unsigned int binary = 0, debug = 0, sort = 0, cil = 0, conf = 0, optimize = 0;
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struct val_to_name v;
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int ret, ch, fd, target = SEPOL_TARGET_SELINUX;
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unsigned int nel, uret;
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struct stat sb;
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void *map;
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FILE *outfp = NULL;
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char *name;
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int state;
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int show_version = 0;
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char *reason_buf = NULL;
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unsigned int reason;
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int flags;
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struct policy_file pf;
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const struct option long_options[] = {
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{"output", required_argument, NULL, 'o'},
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{"target", required_argument, NULL, 't'},
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{"binary", no_argument, NULL, 'b'},
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{"debug", no_argument, NULL, 'd'},
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{"version", no_argument, NULL, 'V'},
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{"handle-unknown", required_argument, NULL, 'U'},
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{"mls", no_argument, NULL, 'M'},
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{"cil", no_argument, NULL, 'C'},
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{"conf",no_argument, NULL, 'F'},
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{"sort", no_argument, NULL, 'S'},
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{"optimize", no_argument, NULL, 'O'},
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{"werror", no_argument, NULL, 'E'},
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{"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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while ((ch = getopt_long(argc, argv, "o:t:dbU:MCFSVc:OEh", long_options, NULL)) != -1) {
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switch (ch) {
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case 'o':
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outfile = optarg;
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break;
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case 't':
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if (!strcasecmp(optarg, "Xen"))
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target = SEPOL_TARGET_XEN;
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else if (!strcasecmp(optarg, "SELinux"))
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target = SEPOL_TARGET_SELINUX;
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else{
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fprintf(stderr, "%s: Unknown target platform:"
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"%s\n", argv[0], optarg);
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exit(1);
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}
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break;
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case 'b':
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binary = 1;
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file = binfile;
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break;
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case 'd':
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debug = 1;
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break;
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case 'V':
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show_version = 1;
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break;
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case 'U':
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if (!strcasecmp(optarg, "deny")) {
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handle_unknown = DENY_UNKNOWN;
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break;
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}
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if (!strcasecmp(optarg, "allow")) {
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handle_unknown = ALLOW_UNKNOWN;
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break;
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}
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if (!strcasecmp(optarg, "reject")) {
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handle_unknown = REJECT_UNKNOWN;
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break;
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}
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usage(argv[0]);
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case 'S':
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sort = 1;
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break;
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case 'O':
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optimize = 1;
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break;
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case 'M':
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mlspol = 1;
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break;
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case 'C':
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cil = 1;
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break;
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case 'F':
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conf = 1;
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break;
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case 'c':{
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long int n;
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errno = 0;
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n = strtol(optarg, NULL, 10);
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if (errno) {
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fprintf(stderr,
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"Invalid policyvers specified: %s\n",
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optarg);
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usage(argv[0]);
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exit(1);
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}
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if (n < POLICYDB_VERSION_MIN
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|| n > POLICYDB_VERSION_MAX) {
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fprintf(stderr,
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"policyvers value %ld not in range %d-%d\n",
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n, POLICYDB_VERSION_MIN,
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POLICYDB_VERSION_MAX);
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usage(argv[0]);
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exit(1);
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}
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policyvers = n;
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break;
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}
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case 'E':
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werror = 1;
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break;
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case 'h':
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default:
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usage(argv[0]);
|
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}
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}
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|
|
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if (show_version) {
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printf("%d (compatibility range %d-%d)\n",
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policyvers ? policyvers : POLICYDB_VERSION_MAX ,
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POLICYDB_VERSION_MAX, POLICYDB_VERSION_MIN);
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exit(0);
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}
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|
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if (optind != argc) {
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file = argv[optind++];
|
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if (optind != argc)
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usage(argv[0]);
|
|
}
|
|
/* Set policydb and sidtab used by libsepol service functions
|
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to my structures, so that I can directly populate and
|
|
manipulate them. */
|
|
sepol_set_policydb(&policydb);
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sepol_set_sidtab(&sidtab);
|
|
|
|
if (cil && conf) {
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fprintf(stderr, "Can't convert to CIL and policy.conf at the same time\n");
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|
exit(1);
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|
}
|
|
|
|
if (binary) {
|
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fd = open(file, O_RDONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Can't open '%s': %s\n",
|
|
file, strerror(errno));
|
|
exit(1);
|
|
}
|
|
if (fstat(fd, &sb) < 0) {
|
|
fprintf(stderr, "Can't stat '%s': %s\n",
|
|
file, strerror(errno));
|
|
exit(1);
|
|
}
|
|
map =
|
|
mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
|
|
fd, 0);
|
|
if (map == MAP_FAILED) {
|
|
fprintf(stderr, "Can't map '%s': %s\n",
|
|
file, strerror(errno));
|
|
exit(1);
|
|
}
|
|
policy_file_init(&pf);
|
|
pf.type = PF_USE_MEMORY;
|
|
pf.data = map;
|
|
pf.len = sb.st_size;
|
|
if (policydb_init(&policydb)) {
|
|
fprintf(stderr, "%s: policydb_init: Out of memory!\n",
|
|
argv[0]);
|
|
exit(1);
|
|
}
|
|
ret = policydb_read(&policydb, &pf, 1);
|
|
if (ret) {
|
|
fprintf(stderr,
|
|
"%s: error(s) encountered while parsing configuration\n",
|
|
argv[0]);
|
|
exit(1);
|
|
}
|
|
policydbp = &policydb;
|
|
|
|
/* Check Policy Consistency */
|
|
if (policydbp->mls) {
|
|
if (!mlspol) {
|
|
fprintf(stderr, "%s: MLS policy, but non-MLS"
|
|
" is specified\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
if (mlspol) {
|
|
fprintf(stderr, "%s: non-MLS policy, but MLS"
|
|
" is specified\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (policydbp->policyvers <= POLICYDB_VERSION_PERMISSIVE) {
|
|
if (policyvers > policydbp->policyvers) {
|
|
fprintf(stderr, "Binary policies with version <= %u cannot be upgraded\n", POLICYDB_VERSION_PERMISSIVE);
|
|
} else if (policyvers) {
|
|
policydbp->policyvers = policyvers;
|
|
}
|
|
} else {
|
|
policydbp->policyvers = policyvers ? policyvers : POLICYDB_VERSION_MAX;
|
|
}
|
|
} else {
|
|
if (conf) {
|
|
fprintf(stderr, "Can only generate policy.conf from binary policy\n");
|
|
exit(1);
|
|
}
|
|
if (policydb_init(&parse_policy))
|
|
exit(1);
|
|
/* We build this as a base policy first since that is all the parser understands */
|
|
parse_policy.policy_type = POLICY_BASE;
|
|
policydb_set_target_platform(&parse_policy, target);
|
|
|
|
/* Let sepol know if we are dealing with MLS support */
|
|
parse_policy.mls = mlspol;
|
|
parse_policy.handle_unknown = handle_unknown;
|
|
|
|
policydbp = &parse_policy;
|
|
|
|
if (read_source_policy(policydbp, file, "checkpolicy") < 0)
|
|
exit(1);
|
|
|
|
if (hashtab_map(policydbp->p_levels.table, check_level, NULL))
|
|
exit(1);
|
|
|
|
/* Linking takes care of optional avrule blocks */
|
|
if (link_modules(NULL, policydbp, NULL, 0, 0)) {
|
|
fprintf(stderr, "Error while resolving optionals\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (!cil) {
|
|
if (policydb_init(&policydb)) {
|
|
fprintf(stderr, "%s: policydb_init failed\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
if (expand_module(NULL, policydbp, &policydb, 0, 1)) {
|
|
fprintf(stderr, "Error while expanding policy\n");
|
|
exit(1);
|
|
}
|
|
policydb_destroy(policydbp);
|
|
policydbp = &policydb;
|
|
}
|
|
|
|
policydbp->policyvers = policyvers ? policyvers : POLICYDB_VERSION_MAX;
|
|
}
|
|
|
|
if (policydb_load_isids(&policydb, &sidtab))
|
|
exit(1);
|
|
|
|
if (optimize && policydbp->policy_type == POLICY_KERN) {
|
|
ret = policydb_optimize(policydbp);
|
|
if (ret) {
|
|
fprintf(stderr, "%s: error optimizing policy\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (outfile) {
|
|
if (!strcmp(outfile, "-")) {
|
|
outfp = stdout;
|
|
outfile = "<STDOUT>";
|
|
} else {
|
|
outfp = fopen(outfile, "w");
|
|
if (!outfp) {
|
|
perror(outfile);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (!cil) {
|
|
if (!conf) {
|
|
policydb.policy_type = POLICY_KERN;
|
|
|
|
policy_file_init(&pf);
|
|
pf.type = PF_USE_STDIO;
|
|
pf.fp = outfp;
|
|
if (sort) {
|
|
ret = policydb_sort_ocontexts(&policydb);
|
|
if (ret) {
|
|
fprintf(stderr, "%s: error sorting ocontexts\n",
|
|
argv[0]);
|
|
exit(1);
|
|
}
|
|
}
|
|
ret = policydb_write(&policydb, &pf);
|
|
} else {
|
|
ret = sepol_kernel_policydb_to_conf(outfp, policydbp);
|
|
}
|
|
if (ret) {
|
|
fprintf(stderr, "%s: error writing %s\n",
|
|
argv[0], outfile);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
if (binary) {
|
|
ret = sepol_kernel_policydb_to_cil(outfp, policydbp);
|
|
} else {
|
|
ret = sepol_module_policydb_to_cil(outfp, policydbp, 1);
|
|
}
|
|
if (ret) {
|
|
fprintf(stderr, "%s: error writing %s\n", argv[0], outfile);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (outfp != stdout) {
|
|
if(fclose(outfp)) {
|
|
fprintf(stderr, "%s: error closing %s: %s\n", argv[0], outfile, strerror(errno));
|
|
exit(1);
|
|
}
|
|
}
|
|
} else if (cil) {
|
|
fprintf(stderr, "%s: No file to write CIL was specified\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
if (!debug) {
|
|
policydb_destroy(&policydb);
|
|
sepol_sidtab_destroy(&sidtab);
|
|
exit(0);
|
|
}
|
|
|
|
menu:
|
|
printf("\nSelect an option:\n");
|
|
printf("0) Call compute_access_vector\n");
|
|
printf("1) Call sid_to_context\n");
|
|
printf("2) Call context_to_sid\n");
|
|
printf("3) Call transition_sid\n");
|
|
printf("4) Call member_sid\n");
|
|
printf("5) Call change_sid\n");
|
|
printf("6) Call list_sids\n");
|
|
printf("7) Call load_policy\n");
|
|
printf("8) Call fs_sid\n");
|
|
printf("9) Call port_sid\n");
|
|
printf("a) Call netif_sid\n");
|
|
printf("b) Call node_sid\n");
|
|
printf("c) Call fs_use\n");
|
|
printf("d) Call genfs_sid\n");
|
|
printf("e) Call get_user_sids\n");
|
|
printf("f) display conditional bools\n");
|
|
printf("g) display conditional expressions\n");
|
|
printf("h) change a boolean value\n");
|
|
printf("i) display constraint expressions\n");
|
|
printf("j) display validatetrans expressions\n");
|
|
printf("k) Call ibpkey_sid\n");
|
|
printf("l) Call ibendport_sid\n");
|
|
#ifdef EQUIVTYPES
|
|
printf("z) Show equivalent types\n");
|
|
#endif
|
|
printf("m) Show menu again\n");
|
|
printf("q) Exit\n");
|
|
while (1) {
|
|
printf("\nChoose: ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
switch (ans[0]) {
|
|
case '0':
|
|
printf("source sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ssid = atoi(ans);
|
|
|
|
printf("target sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
tsid = atoi(ans);
|
|
|
|
printf("target class? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
if (isdigit(ans[0])) {
|
|
tclass = atoi(ans);
|
|
if (!tclass
|
|
|| tclass > policydb.p_classes.nprim) {
|
|
printf("\nNo such class.\n");
|
|
break;
|
|
}
|
|
cladatum =
|
|
policydb.class_val_to_struct[tclass - 1];
|
|
} else {
|
|
ans[strlen(ans) - 1] = 0;
|
|
cladatum =
|
|
(class_datum_t *) hashtab_search(policydb.
|
|
p_classes.
|
|
table,
|
|
ans);
|
|
if (!cladatum) {
|
|
printf("\nNo such class\n");
|
|
break;
|
|
}
|
|
tclass = cladatum->s.value;
|
|
}
|
|
|
|
if (!cladatum->comdatum && !cladatum->permissions.nprim) {
|
|
printf
|
|
("\nNo access vector definition for that class\n");
|
|
break;
|
|
}
|
|
ret = sepol_compute_av(ssid, tsid, tclass, 0, &avd);
|
|
switch (ret) {
|
|
case 0:
|
|
printf("\nallowed {");
|
|
for (i = 1; i <= sizeof(avd.allowed) * 8; i++) {
|
|
if (avd.allowed & (1 << (i - 1))) {
|
|
v.val = i;
|
|
ret =
|
|
hashtab_map(cladatum->
|
|
permissions.
|
|
table,
|
|
find_perm, &v);
|
|
if (!ret && cladatum->comdatum) {
|
|
ret =
|
|
hashtab_map
|
|
(cladatum->
|
|
comdatum->
|
|
permissions.table,
|
|
find_perm, &v);
|
|
}
|
|
if (ret)
|
|
printf(" %s", v.name);
|
|
}
|
|
}
|
|
printf(" }\n");
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid sid\n");
|
|
break;
|
|
default:
|
|
printf("return code 0x%x\n", ret);
|
|
}
|
|
break;
|
|
case '1':
|
|
printf("sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ssid = atoi(ans);
|
|
ret = sepol_sid_to_context(ssid,
|
|
&scontext, &scontext_len);
|
|
switch (ret) {
|
|
case 0:
|
|
printf("\nscontext %s\n", scontext);
|
|
free(scontext);
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid sid\n");
|
|
break;
|
|
case -ENOMEM:
|
|
printf("\nout of memory\n");
|
|
break;
|
|
default:
|
|
printf("return code 0x%x\n", ret);
|
|
}
|
|
break;
|
|
case '2':
|
|
printf("scontext? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
scontext_len = strlen(ans);
|
|
ans[scontext_len - 1] = 0;
|
|
ret = sepol_context_to_sid(ans, scontext_len, &ssid);
|
|
switch (ret) {
|
|
case 0:
|
|
printf("\nsid %d\n", ssid);
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid context\n");
|
|
break;
|
|
case -ENOMEM:
|
|
printf("\nout of memory\n");
|
|
break;
|
|
default:
|
|
printf("return code 0x%x\n", ret);
|
|
}
|
|
break;
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
ch = ans[0];
|
|
|
|
printf("source sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ssid = atoi(ans);
|
|
printf("target sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
tsid = atoi(ans);
|
|
|
|
printf("object class? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
if (isdigit(ans[0])) {
|
|
tclass = atoi(ans);
|
|
if (!tclass
|
|
|| tclass > policydb.p_classes.nprim) {
|
|
printf("\nNo such class.\n");
|
|
break;
|
|
}
|
|
} else {
|
|
ans[strlen(ans) - 1] = 0;
|
|
cladatum =
|
|
(class_datum_t *) hashtab_search(policydb.
|
|
p_classes.
|
|
table,
|
|
ans);
|
|
if (!cladatum) {
|
|
printf("\nNo such class\n");
|
|
break;
|
|
}
|
|
tclass = cladatum->s.value;
|
|
}
|
|
|
|
if (ch == '3')
|
|
ret =
|
|
sepol_transition_sid(ssid, tsid, tclass,
|
|
&ssid);
|
|
else if (ch == '4')
|
|
ret =
|
|
sepol_member_sid(ssid, tsid, tclass, &ssid);
|
|
else
|
|
ret =
|
|
sepol_change_sid(ssid, tsid, tclass, &ssid);
|
|
switch (ret) {
|
|
case 0:
|
|
printf("\nsid %d\n", ssid);
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid sid\n");
|
|
break;
|
|
case -ENOMEM:
|
|
printf("\nout of memory\n");
|
|
break;
|
|
default:
|
|
printf("return code 0x%x\n", ret);
|
|
}
|
|
break;
|
|
case '6':
|
|
sepol_sidtab_map(&sidtab, print_sid, 0);
|
|
break;
|
|
case '7':
|
|
printf("pathname? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
pathlen = strlen(ans);
|
|
ans[pathlen - 1] = 0;
|
|
fd = open(ans, O_RDONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Can't open '%s': %s\n",
|
|
ans, strerror(errno));
|
|
break;
|
|
}
|
|
if (fstat(fd, &sb) < 0) {
|
|
fprintf(stderr, "Can't stat '%s': %s\n",
|
|
ans, strerror(errno));
|
|
break;
|
|
}
|
|
map =
|
|
mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE,
|
|
MAP_PRIVATE, fd, 0);
|
|
if (map == MAP_FAILED) {
|
|
fprintf(stderr, "Can't map '%s': %s\n",
|
|
ans, strerror(errno));
|
|
break;
|
|
}
|
|
ret = sepol_load_policy(map, sb.st_size);
|
|
switch (ret) {
|
|
case 0:
|
|
printf("\nsuccess\n");
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid policy\n");
|
|
break;
|
|
case -ENOMEM:
|
|
printf("\nout of memory\n");
|
|
break;
|
|
default:
|
|
printf("return code 0x%x\n", ret);
|
|
}
|
|
break;
|
|
case '8':
|
|
printf("fs kdevname? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
ret = sepol_fs_sid(ans, &ssid, &tsid);
|
|
if (ret) {
|
|
printf("unknown fs kdevname\n");
|
|
} else {
|
|
printf("fs_sid %d default_file_sid %d\n", ssid, tsid);
|
|
}
|
|
break;
|
|
case '9':
|
|
printf("protocol? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
if (!strcmp(ans, "tcp") || !strcmp(ans, "TCP"))
|
|
protocol = IPPROTO_TCP;
|
|
else if (!strcmp(ans, "udp") || !strcmp(ans, "UDP"))
|
|
protocol = IPPROTO_UDP;
|
|
else if (!strcmp(ans, "dccp") || !strcmp(ans, "DCCP"))
|
|
protocol = IPPROTO_DCCP;
|
|
else if (!strcmp(ans, "sctp") || !strcmp(ans, "SCTP"))
|
|
protocol = IPPROTO_SCTP;
|
|
else {
|
|
printf("unknown protocol\n");
|
|
break;
|
|
}
|
|
printf("port? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
port = atoi(ans);
|
|
sepol_port_sid(0, 0, protocol, port, &ssid);
|
|
printf("sid %d\n", ssid);
|
|
break;
|
|
case 'a':
|
|
printf("netif name? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
ret = sepol_netif_sid(ans, &ssid, &tsid);
|
|
if (ret) {
|
|
printf("unknown name\n");
|
|
} else {
|
|
printf("if_sid %d default_msg_sid %d\n", ssid, tsid);
|
|
}
|
|
break;
|
|
case 'b':{
|
|
char *p;
|
|
int family, len;
|
|
struct in_addr addr4;
|
|
struct in6_addr addr6;
|
|
|
|
printf("protocol family? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
if (!strcasecmp(ans, "ipv4"))
|
|
family = AF_INET;
|
|
else if (!strcasecmp(ans, "ipv6"))
|
|
family = AF_INET6;
|
|
else {
|
|
printf("unknown protocol family\n");
|
|
break;
|
|
}
|
|
|
|
printf("node address? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
|
|
if (family == AF_INET) {
|
|
p = (char *)&addr4;
|
|
len = sizeof(addr4);
|
|
} else {
|
|
p = (char *)&addr6;
|
|
len = sizeof(addr6);
|
|
}
|
|
|
|
if (inet_pton(family, ans, p) < 1) {
|
|
printf("error parsing address\n");
|
|
break;
|
|
}
|
|
|
|
sepol_node_sid(family, p, len, &ssid);
|
|
printf("sid %d\n", ssid);
|
|
break;
|
|
}
|
|
case 'c':
|
|
printf("fstype? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
sepol_fs_use(ans, &uret, &ssid);
|
|
switch (uret) {
|
|
case SECURITY_FS_USE_XATTR:
|
|
printf("use xattr\n");
|
|
break;
|
|
case SECURITY_FS_USE_TRANS:
|
|
printf("use transition SIDs\n");
|
|
break;
|
|
case SECURITY_FS_USE_TASK:
|
|
printf("use task SIDs\n");
|
|
break;
|
|
case SECURITY_FS_USE_GENFS:
|
|
printf("use genfs\n");
|
|
break;
|
|
case SECURITY_FS_USE_NONE:
|
|
printf("no labeling support\n");
|
|
break;
|
|
}
|
|
printf("sid %d\n", ssid);
|
|
break;
|
|
case 'd':
|
|
printf("fstype? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
fstype = strdup(ans);
|
|
printf("path? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
path = strdup(ans);
|
|
printf("object class? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
if (isdigit(ans[0])) {
|
|
tclass = atoi(ans);
|
|
if (!tclass
|
|
|| tclass > policydb.p_classes.nprim) {
|
|
printf("\nNo such class.\n");
|
|
break;
|
|
}
|
|
} else {
|
|
ans[strlen(ans) - 1] = 0;
|
|
cladatum =
|
|
(class_datum_t *) hashtab_search(policydb.
|
|
p_classes.
|
|
table,
|
|
ans);
|
|
if (!cladatum) {
|
|
printf("\nNo such class\n");
|
|
break;
|
|
}
|
|
tclass = cladatum->s.value;
|
|
}
|
|
sepol_genfs_sid(fstype, path, tclass, &ssid);
|
|
printf("sid %d\n", ssid);
|
|
free(fstype);
|
|
free(path);
|
|
break;
|
|
case 'e':
|
|
printf("from SID? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
ssid = atoi(ans);
|
|
|
|
printf("username? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
|
|
ret = sepol_get_user_sids(ssid, ans, &sids, &nel);
|
|
switch (ret) {
|
|
case 0:
|
|
if (!nel)
|
|
printf("\nnone\n");
|
|
for (i = 0; i < nel; i++)
|
|
print_sid(sids[i], NULL, NULL);
|
|
free(sids);
|
|
break;
|
|
case -ENOMEM:
|
|
printf("\nout of memory\n");
|
|
break;
|
|
case -EINVAL:
|
|
printf("\ninvalid argument\n");
|
|
break;
|
|
default:
|
|
printf("\nerror\n");
|
|
break;
|
|
}
|
|
break;
|
|
case 'f':
|
|
display_bools();
|
|
break;
|
|
case 'g':
|
|
display_cond_expressions();
|
|
break;
|
|
case 'h':
|
|
printf("name? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
|
|
name = malloc((strlen(ans) + 1) * sizeof(char));
|
|
if (name == NULL) {
|
|
fprintf(stderr, "couldn't malloc string.\n");
|
|
break;
|
|
}
|
|
strcpy(name, ans);
|
|
|
|
printf("state? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
|
|
if (atoi(ans))
|
|
state = 1;
|
|
else
|
|
state = 0;
|
|
|
|
change_bool(name, state);
|
|
free(name);
|
|
break;
|
|
case 'i':
|
|
printf("source sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ssid = atoi(ans);
|
|
|
|
printf("target sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
tsid = atoi(ans);
|
|
|
|
printf("target class? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
if (isdigit(ans[0])) {
|
|
tclass = atoi(ans);
|
|
if (!tclass
|
|
|| tclass > policydb.p_classes.nprim) {
|
|
printf("\nNo such class.\n");
|
|
break;
|
|
}
|
|
} else {
|
|
ans[strlen(ans) - 1] = 0;
|
|
cladatum =
|
|
(class_datum_t *) hashtab_search(policydb.
|
|
p_classes.
|
|
table,
|
|
ans);
|
|
if (!cladatum) {
|
|
printf("\nNo such class\n");
|
|
break;
|
|
}
|
|
tclass = cladatum->s.value;
|
|
}
|
|
|
|
flags = SHOW_GRANTED;
|
|
if (sepol_compute_av_reason_buffer(ssid, tsid,
|
|
tclass, 0, &avd, &reason,
|
|
&reason_buf, flags)) {
|
|
printf("\nconstraint error\n");
|
|
break;
|
|
}
|
|
if (reason_buf) {
|
|
printf("\nConstraint expressions:\n%s",
|
|
reason_buf);
|
|
free(reason_buf);
|
|
} else {
|
|
printf("\nNo constraints found.\n");
|
|
}
|
|
break;
|
|
case 'j':
|
|
printf("old sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
oldsid = atoi(ans);
|
|
|
|
printf("new sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
newsid = atoi(ans);
|
|
|
|
printf("task sid? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
tasksid = atoi(ans);
|
|
|
|
printf("target class? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
if (isdigit(ans[0])) {
|
|
tclass = atoi(ans);
|
|
if (!tclass
|
|
|| tclass > policydb.p_classes.nprim) {
|
|
printf("\nNo such class.\n");
|
|
break;
|
|
}
|
|
} else {
|
|
ans[strlen(ans) - 1] = 0;
|
|
cladatum =
|
|
(class_datum_t *) hashtab_search(policydb.
|
|
p_classes.
|
|
table,
|
|
ans);
|
|
if (!cladatum) {
|
|
printf("\nNo such class\n");
|
|
break;
|
|
}
|
|
tclass = cladatum->s.value;
|
|
}
|
|
|
|
flags = SHOW_GRANTED;
|
|
if (sepol_validate_transition_reason_buffer(oldsid,
|
|
newsid, tasksid, tclass,
|
|
&reason_buf, flags)) {
|
|
printf("\nvalidatetrans error\n");
|
|
break;
|
|
}
|
|
if (reason_buf) {
|
|
printf("\nValidatetrans expressions:\n%s",
|
|
reason_buf);
|
|
free(reason_buf);
|
|
} else {
|
|
printf(
|
|
"\nNo validatetrans expressions found.\n");
|
|
}
|
|
break;
|
|
case 'k':
|
|
{
|
|
char *p;
|
|
struct in6_addr addr6;
|
|
uint64_t subnet_prefix;
|
|
unsigned int pkey;
|
|
|
|
printf("subnet prefix? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
p = (char *)&addr6;
|
|
|
|
if (inet_pton(AF_INET6, ans, p) < 1) {
|
|
printf("error parsing subnet prefix\n");
|
|
break;
|
|
}
|
|
|
|
memcpy(&subnet_prefix, p, sizeof(subnet_prefix));
|
|
printf("pkey? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
pkey = atoi(ans);
|
|
sepol_ibpkey_sid(subnet_prefix, pkey, &ssid);
|
|
printf("sid %d\n", ssid);
|
|
}
|
|
break;
|
|
case 'l':
|
|
printf("device name (eg. mlx4_0)? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
ans[strlen(ans) - 1] = 0;
|
|
|
|
name = malloc((strlen(ans) + 1) * sizeof(char));
|
|
if (!name) {
|
|
fprintf(stderr, "couldn't malloc string.\n");
|
|
break;
|
|
}
|
|
strcpy(name, ans);
|
|
|
|
printf("port? ");
|
|
FGETS(ans, sizeof(ans), stdin);
|
|
port = atoi(ans);
|
|
sepol_ibendport_sid(name, port, &ssid);
|
|
printf("sid %d\n", ssid);
|
|
free(name);
|
|
break;
|
|
#ifdef EQUIVTYPES
|
|
case 'z':
|
|
identify_equiv_types();
|
|
break;
|
|
#endif
|
|
case 'm':
|
|
goto menu;
|
|
case 'q':
|
|
exit(0);
|
|
break;
|
|
default:
|
|
printf("\nUnknown option %s.\n", ans);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* FLASK */
|