bb4ec28922
It was already not allowed in many cases, but crashed instead of giving an error. PR: 248444
853 lines
21 KiB
C
853 lines
21 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011 James Gritton
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "jailp.h"
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struct ipspec {
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const char *name;
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unsigned flags;
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};
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extern FILE *yyin;
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extern int yynerrs;
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extern int yyparse(void);
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struct cfjails cfjails = TAILQ_HEAD_INITIALIZER(cfjails);
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static void free_param(struct cfparams *pp, struct cfparam *p);
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static void free_param_strings(struct cfparam *p);
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static const struct ipspec intparams[] = {
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[IP_ALLOW_DYING] = {"allow.dying", PF_INTERNAL | PF_BOOL},
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[IP_COMMAND] = {"command", PF_INTERNAL},
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[IP_DEPEND] = {"depend", PF_INTERNAL},
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[IP_EXEC_CLEAN] = {"exec.clean", PF_INTERNAL | PF_BOOL},
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[IP_EXEC_CONSOLELOG] = {"exec.consolelog", PF_INTERNAL},
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[IP_EXEC_FIB] = {"exec.fib", PF_INTERNAL | PF_INT},
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[IP_EXEC_JAIL_USER] = {"exec.jail_user", PF_INTERNAL},
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[IP_EXEC_POSTSTART] = {"exec.poststart", PF_INTERNAL},
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[IP_EXEC_POSTSTOP] = {"exec.poststop", PF_INTERNAL},
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[IP_EXEC_PREPARE] = {"exec.prepare", PF_INTERNAL},
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[IP_EXEC_PRESTART] = {"exec.prestart", PF_INTERNAL},
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[IP_EXEC_PRESTOP] = {"exec.prestop", PF_INTERNAL},
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[IP_EXEC_RELEASE] = {"exec.release", PF_INTERNAL},
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[IP_EXEC_CREATED] = {"exec.created", PF_INTERNAL},
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[IP_EXEC_START] = {"exec.start", PF_INTERNAL},
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[IP_EXEC_STOP] = {"exec.stop", PF_INTERNAL},
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[IP_EXEC_SYSTEM_JAIL_USER]= {"exec.system_jail_user",
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PF_INTERNAL | PF_BOOL},
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[IP_EXEC_SYSTEM_USER] = {"exec.system_user", PF_INTERNAL},
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[IP_EXEC_TIMEOUT] = {"exec.timeout", PF_INTERNAL | PF_INT},
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#if defined(INET) || defined(INET6)
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[IP_INTERFACE] = {"interface", PF_INTERNAL},
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[IP_IP_HOSTNAME] = {"ip_hostname", PF_INTERNAL | PF_BOOL},
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#endif
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[IP_MOUNT] = {"mount", PF_INTERNAL | PF_REV},
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[IP_MOUNT_DEVFS] = {"mount.devfs", PF_INTERNAL | PF_BOOL},
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[IP_MOUNT_FDESCFS] = {"mount.fdescfs", PF_INTERNAL | PF_BOOL},
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[IP_MOUNT_PROCFS] = {"mount.procfs", PF_INTERNAL | PF_BOOL},
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[IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
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[IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
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[IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
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#ifdef INET
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[IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV | PF_REV},
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#endif
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#ifdef INET6
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[IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV | PF_REV},
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#endif
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[IP__MOUNT_FROM_FSTAB] = {"mount.fstab", PF_INTERNAL | PF_CONV | PF_REV},
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[IP__OP] = {NULL, PF_CONV},
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[KP_ALLOW_CHFLAGS] = {"allow.chflags", 0},
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[KP_ALLOW_MOUNT] = {"allow.mount", 0},
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[KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0},
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[KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0},
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[KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0},
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[KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0},
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[KP_DEVFS_RULESET] = {"devfs_ruleset", 0},
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[KP_HOST_HOSTNAME] = {"host.hostname", 0},
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#ifdef INET
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[KP_IP4_ADDR] = {"ip4.addr", 0},
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#endif
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#ifdef INET6
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[KP_IP6_ADDR] = {"ip6.addr", 0},
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#endif
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[KP_JID] = {"jid", PF_IMMUTABLE},
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[KP_NAME] = {"name", PF_IMMUTABLE},
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[KP_PATH] = {"path", 0},
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[KP_PERSIST] = {"persist", 0},
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[KP_SECURELEVEL] = {"securelevel", 0},
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[KP_VNET] = {"vnet", 0},
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};
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/*
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* Parse the jail configuration file.
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*/
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void
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load_config(void)
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{
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struct cfjails wild;
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struct cfparams opp;
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struct cfjail *j, *tj, *wj;
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struct cfparam *p, *vp, *tp;
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struct cfstring *s, *vs, *ns;
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struct cfvar *v, *vv;
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char *ep;
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int did_self, jseq, pgen;
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if (!strcmp(cfname, "-")) {
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cfname = "STDIN";
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yyin = stdin;
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} else {
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yyin = fopen(cfname, "r");
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if (!yyin)
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err(1, "%s", cfname);
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}
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if (yyparse() || yynerrs)
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exit(1);
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/* Separate the wildcard jails out from the actual jails. */
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jseq = 0;
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TAILQ_INIT(&wild);
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TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) {
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j->seq = ++jseq;
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if (wild_jail_name(j->name))
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requeue(j, &wild);
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}
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TAILQ_FOREACH(j, &cfjails, tq) {
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/* Set aside the jail's parameters. */
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TAILQ_INIT(&opp);
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TAILQ_CONCAT(&opp, &j->params, tq);
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/*
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* The jail name implies its "name" or "jid" parameter,
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* though they may also be explicitly set later on.
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*/
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add_param(j, NULL,
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strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME,
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j->name);
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/*
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* Collect parameters for the jail, global parameters/variables,
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* and any matching wildcard jails.
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*/
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did_self = 0;
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TAILQ_FOREACH(wj, &wild, tq) {
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if (j->seq < wj->seq && !did_self) {
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TAILQ_FOREACH(p, &opp, tq)
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add_param(j, p, 0, NULL);
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did_self = 1;
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}
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if (wild_jail_match(j->name, wj->name))
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TAILQ_FOREACH(p, &wj->params, tq)
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add_param(j, p, 0, NULL);
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}
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if (!did_self)
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TAILQ_FOREACH(p, &opp, tq)
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add_param(j, p, 0, NULL);
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/* Resolve any variable substitutions. */
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pgen = 0;
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TAILQ_FOREACH(p, &j->params, tq) {
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p->gen = ++pgen;
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find_vars:
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TAILQ_FOREACH(s, &p->val, tq) {
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while ((v = STAILQ_FIRST(&s->vars))) {
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TAILQ_FOREACH(vp, &j->params, tq)
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if (!strcmp(vp->name, v->name))
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break;
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if (!vp) {
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jail_warnx(j,
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"%s: variable \"%s\" not found",
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p->name, v->name);
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bad_var:
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j->flags |= JF_FAILED;
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TAILQ_FOREACH(vp, &j->params, tq)
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if (vp->gen == pgen)
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vp->flags |= PF_BAD;
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goto free_var;
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}
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if (vp->flags & PF_BAD)
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goto bad_var;
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if (vp->gen == pgen) {
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jail_warnx(j, "%s: variable loop",
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v->name);
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goto bad_var;
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}
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TAILQ_FOREACH(vs, &vp->val, tq)
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if (!STAILQ_EMPTY(&vs->vars)) {
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vp->gen = pgen;
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TAILQ_REMOVE(&j->params, vp,
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tq);
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TAILQ_INSERT_BEFORE(p, vp, tq);
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p = vp;
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goto find_vars;
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}
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vs = TAILQ_FIRST(&vp->val);
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if (TAILQ_NEXT(vs, tq) != NULL &&
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(s->s[0] != '\0' ||
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STAILQ_NEXT(v, tq))) {
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jail_warnx(j, "%s: array cannot be "
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"substituted inline",
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p->name);
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goto bad_var;
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}
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s->s = erealloc(s->s, s->len + vs->len + 1);
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memmove(s->s + v->pos + vs->len,
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s->s + v->pos,
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s->len - v->pos + 1);
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memcpy(s->s + v->pos, vs->s, vs->len);
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vv = v;
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while ((vv = STAILQ_NEXT(vv, tq)))
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vv->pos += vs->len;
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s->len += vs->len;
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while ((vs = TAILQ_NEXT(vs, tq))) {
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ns = emalloc(sizeof(struct cfstring));
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ns->s = estrdup(vs->s);
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ns->len = vs->len;
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STAILQ_INIT(&ns->vars);
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TAILQ_INSERT_AFTER(&p->val, s, ns, tq);
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s = ns;
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}
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free_var:
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free(v->name);
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STAILQ_REMOVE_HEAD(&s->vars, tq);
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free(v);
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}
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}
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}
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/* Free the jail's original parameter list and any variables. */
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while ((p = TAILQ_FIRST(&opp)))
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free_param(&opp, p);
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TAILQ_FOREACH_SAFE(p, &j->params, tq, tp)
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if (p->flags & PF_VAR)
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free_param(&j->params, p);
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}
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while ((wj = TAILQ_FIRST(&wild))) {
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free(wj->name);
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while ((p = TAILQ_FIRST(&wj->params)))
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free_param(&wj->params, p);
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TAILQ_REMOVE(&wild, wj, tq);
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}
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}
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/*
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* Create a new jail record.
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*/
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struct cfjail *
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add_jail(void)
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{
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struct cfjail *j;
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j = emalloc(sizeof(struct cfjail));
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memset(j, 0, sizeof(struct cfjail));
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TAILQ_INIT(&j->params);
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STAILQ_INIT(&j->dep[DEP_FROM]);
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STAILQ_INIT(&j->dep[DEP_TO]);
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j->queue = &cfjails;
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TAILQ_INSERT_TAIL(&cfjails, j, tq);
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return j;
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}
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/*
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* Add a parameter to a jail.
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*/
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void
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add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum,
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const char *value)
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{
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struct cfstrings nss;
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struct cfparam *dp, *np;
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struct cfstring *s, *ns;
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struct cfvar *v, *nv;
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const char *name;
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char *cs, *tname;
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unsigned flags;
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if (j == NULL) {
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/* Create a single anonymous jail if one doesn't yet exist. */
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j = TAILQ_LAST(&cfjails, cfjails);
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if (j == NULL)
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j = add_jail();
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}
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TAILQ_INIT(&nss);
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if (p != NULL) {
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name = p->name;
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flags = p->flags;
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/*
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* Make a copy of the parameter's string list,
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* which may be freed if it's overridden later.
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*/
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TAILQ_FOREACH(s, &p->val, tq) {
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ns = emalloc(sizeof(struct cfstring));
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ns->s = estrdup(s->s);
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ns->len = s->len;
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STAILQ_INIT(&ns->vars);
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STAILQ_FOREACH(v, &s->vars, tq) {
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nv = emalloc(sizeof(struct cfvar));
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nv->name = strdup(v->name);
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nv->pos = v->pos;
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STAILQ_INSERT_TAIL(&ns->vars, nv, tq);
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}
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TAILQ_INSERT_TAIL(&nss, ns, tq);
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}
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} else {
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flags = PF_APPEND;
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if (ipnum != IP__NULL) {
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name = intparams[ipnum].name;
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flags |= intparams[ipnum].flags;
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} else if ((cs = strchr(value, '='))) {
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tname = alloca(cs - value + 1);
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strlcpy(tname, value, cs - value + 1);
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name = tname;
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value = cs + 1;
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} else {
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name = value;
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value = NULL;
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}
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if (value != NULL) {
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ns = emalloc(sizeof(struct cfstring));
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ns->s = estrdup(value);
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ns->len = strlen(value);
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STAILQ_INIT(&ns->vars);
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TAILQ_INSERT_TAIL(&nss, ns, tq);
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}
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}
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/* See if this parameter has already been added. */
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if (ipnum != IP__NULL)
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dp = j->intparams[ipnum];
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else
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TAILQ_FOREACH(dp, &j->params, tq)
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if (!(dp->flags & PF_CONV) && equalopts(dp->name, name))
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break;
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if (dp != NULL) {
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/* Found it - append or replace. */
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if ((flags ^ dp->flags) & PF_VAR) {
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jail_warnx(j, "variable \"$%s\" cannot have the same "
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"name as a parameter.", name);
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return;
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}
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if (dp->flags & PF_IMMUTABLE) {
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jail_warnx(j, "cannot redefine parameter \"%s\".",
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dp->name);
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return;
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}
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if (strcmp(dp->name, name)) {
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free(dp->name);
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dp->name = estrdup(name);
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}
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if (!(flags & PF_APPEND) || TAILQ_EMPTY(&nss))
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free_param_strings(dp);
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TAILQ_CONCAT(&dp->val, &nss, tq);
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dp->flags |= flags;
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} else {
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/* Not found - add it. */
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np = emalloc(sizeof(struct cfparam));
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np->name = estrdup(name);
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TAILQ_INIT(&np->val);
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TAILQ_CONCAT(&np->val, &nss, tq);
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np->flags = flags;
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np->gen = 0;
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TAILQ_INSERT_TAIL(&j->params, np, tq);
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if (ipnum != IP__NULL)
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j->intparams[ipnum] = np;
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else
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for (ipnum = IP__NULL + 1; ipnum < IP_NPARAM; ipnum++)
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if (!(intparams[ipnum].flags & PF_CONV) &&
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equalopts(name, intparams[ipnum].name)) {
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if (flags & PF_VAR) {
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jail_warnx(j,
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"variable \"$%s\" "
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"cannot have the same "
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"name as a parameter.",
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name);
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return;
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}
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j->intparams[ipnum] = np;
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np->flags |= intparams[ipnum].flags;
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break;
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}
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}
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}
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/*
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* Return if a boolean parameter exists and is true.
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*/
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int
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bool_param(const struct cfparam *p)
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{
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const char *cs;
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if (p == NULL)
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return 0;
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cs = strrchr(p->name, '.');
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return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^
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(TAILQ_EMPTY(&p->val) ||
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!strcasecmp(TAILQ_LAST(&p->val, cfstrings)->s, "true") ||
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(strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10)));
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}
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/*
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* Set an integer if a parameter if it exists.
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*/
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int
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int_param(const struct cfparam *p, int *ip)
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{
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if (p == NULL || TAILQ_EMPTY(&p->val))
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return 0;
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*ip = strtol(TAILQ_LAST(&p->val, cfstrings)->s, NULL, 10);
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return 1;
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}
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/*
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* Return the string value of a scalar parameter if it exists.
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*/
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const char *
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string_param(const struct cfparam *p)
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{
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return (p && !TAILQ_EMPTY(&p->val)
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? TAILQ_LAST(&p->val, cfstrings)->s : NULL);
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}
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/*
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* Check syntax and values of internal parameters. Set some internal
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* parameters based on the values of others.
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*/
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int
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check_intparams(struct cfjail *j)
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{
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struct cfparam *p;
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struct cfstring *s;
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FILE *f;
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const char *val;
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char *cs, *ep, *ln;
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size_t lnlen;
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int error;
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#if defined(INET) || defined(INET6)
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struct addrinfo hints;
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struct addrinfo *ai0, *ai;
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const char *hostname;
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int gicode, defif;
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#endif
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#ifdef INET
|
|
struct in_addr addr4;
|
|
int ip4ok;
|
|
char avalue4[INET_ADDRSTRLEN];
|
|
#endif
|
|
#ifdef INET6
|
|
struct in6_addr addr6;
|
|
int ip6ok;
|
|
char avalue6[INET6_ADDRSTRLEN];
|
|
#endif
|
|
|
|
error = 0;
|
|
/* Check format of boolan and integer values. */
|
|
TAILQ_FOREACH(p, &j->params, tq) {
|
|
if (!TAILQ_EMPTY(&p->val) && (p->flags & (PF_BOOL | PF_INT))) {
|
|
val = TAILQ_LAST(&p->val, cfstrings)->s;
|
|
if (p->flags & PF_BOOL) {
|
|
if (strcasecmp(val, "false") &&
|
|
strcasecmp(val, "true") &&
|
|
((void)strtol(val, &ep, 10), *ep)) {
|
|
jail_warnx(j,
|
|
"%s: unknown boolean value \"%s\"",
|
|
p->name, val);
|
|
error = -1;
|
|
}
|
|
} else {
|
|
(void)strtol(val, &ep, 10);
|
|
if (ep == val || *ep) {
|
|
jail_warnx(j,
|
|
"%s: non-integer value \"%s\"",
|
|
p->name, val);
|
|
error = -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
/*
|
|
* The ip_hostname parameter looks up the hostname, and adds parameters
|
|
* for any IP addresses it finds.
|
|
*/
|
|
if (((j->flags & JF_OP_MASK) != JF_STOP ||
|
|
j->intparams[IP_INTERFACE] != NULL) &&
|
|
bool_param(j->intparams[IP_IP_HOSTNAME]) &&
|
|
(hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) {
|
|
j->intparams[IP_IP_HOSTNAME] = NULL;
|
|
/*
|
|
* Silently ignore unsupported address families from
|
|
* DNS lookups.
|
|
*/
|
|
#ifdef INET
|
|
ip4ok = feature_present("inet");
|
|
#endif
|
|
#ifdef INET6
|
|
ip6ok = feature_present("inet6");
|
|
#endif
|
|
if (
|
|
#if defined(INET) && defined(INET6)
|
|
ip4ok || ip6ok
|
|
#elif defined(INET)
|
|
ip4ok
|
|
#elif defined(INET6)
|
|
ip6ok
|
|
#endif
|
|
) {
|
|
/* Look up the hostname (or get the address) */
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_family =
|
|
#if defined(INET) && defined(INET6)
|
|
ip4ok ? (ip6ok ? PF_UNSPEC : PF_INET) : PF_INET6;
|
|
#elif defined(INET)
|
|
PF_INET;
|
|
#elif defined(INET6)
|
|
PF_INET6;
|
|
#endif
|
|
gicode = getaddrinfo(hostname, NULL, &hints, &ai0);
|
|
if (gicode != 0) {
|
|
jail_warnx(j, "host.hostname %s: %s", hostname,
|
|
gai_strerror(gicode));
|
|
error = -1;
|
|
} else {
|
|
/*
|
|
* Convert the addresses to ASCII so jailparam
|
|
* can convert them back. Errors are not
|
|
* expected here.
|
|
*/
|
|
for (ai = ai0; ai; ai = ai->ai_next)
|
|
switch (ai->ai_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
memcpy(&addr4,
|
|
&((struct sockaddr_in *)
|
|
(void *)ai->ai_addr)->
|
|
sin_addr, sizeof(addr4));
|
|
if (inet_ntop(AF_INET,
|
|
&addr4, avalue4,
|
|
INET_ADDRSTRLEN) == NULL)
|
|
err(1, "inet_ntop");
|
|
add_param(j, NULL, KP_IP4_ADDR,
|
|
avalue4);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
memcpy(&addr6,
|
|
&((struct sockaddr_in6 *)
|
|
(void *)ai->ai_addr)->
|
|
sin6_addr, sizeof(addr6));
|
|
if (inet_ntop(AF_INET6,
|
|
&addr6, avalue6,
|
|
INET6_ADDRSTRLEN) == NULL)
|
|
err(1, "inet_ntop");
|
|
add_param(j, NULL, KP_IP6_ADDR,
|
|
avalue6);
|
|
break;
|
|
#endif
|
|
}
|
|
freeaddrinfo(ai0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* IP addresses may include an interface to set that address on,
|
|
* a netmask/suffix for that address and options for ifconfig.
|
|
* These are copied to an internal command parameter and then stripped
|
|
* so they won't be passed on to jailparam_set.
|
|
*/
|
|
defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
|
|
#ifdef INET
|
|
if (j->intparams[KP_IP4_ADDR] != NULL) {
|
|
TAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR]->val, tq) {
|
|
cs = strchr(s->s, '|');
|
|
if (cs || defif)
|
|
add_param(j, NULL, IP__IP4_IFADDR, s->s);
|
|
if (cs) {
|
|
s->len -= cs + 1 - s->s;
|
|
memmove(s->s, cs + 1, s->len + 1);
|
|
}
|
|
if ((cs = strchr(s->s, '/')) != NULL) {
|
|
*cs = '\0';
|
|
s->len = cs - s->s;
|
|
}
|
|
if ((cs = strchr(s->s, ' ')) != NULL) {
|
|
*cs = '\0';
|
|
s->len = cs - s->s;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
if (j->intparams[KP_IP6_ADDR] != NULL) {
|
|
TAILQ_FOREACH(s, &j->intparams[KP_IP6_ADDR]->val, tq) {
|
|
cs = strchr(s->s, '|');
|
|
if (cs || defif)
|
|
add_param(j, NULL, IP__IP6_IFADDR, s->s);
|
|
if (cs) {
|
|
s->len -= cs + 1 - s->s;
|
|
memmove(s->s, cs + 1, s->len + 1);
|
|
}
|
|
if ((cs = strchr(s->s, '/')) != NULL) {
|
|
*cs = '\0';
|
|
s->len = cs - s->s;
|
|
}
|
|
if ((cs = strchr(s->s, ' ')) != NULL) {
|
|
*cs = '\0';
|
|
s->len = cs - s->s;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* Read mount.fstab file(s), and treat each line as its own mount
|
|
* parameter.
|
|
*/
|
|
if (j->intparams[IP_MOUNT_FSTAB] != NULL) {
|
|
TAILQ_FOREACH(s, &j->intparams[IP_MOUNT_FSTAB]->val, tq) {
|
|
if (s->len == 0)
|
|
continue;
|
|
f = fopen(s->s, "r");
|
|
if (f == NULL) {
|
|
jail_warnx(j, "mount.fstab: %s: %s",
|
|
s->s, strerror(errno));
|
|
error = -1;
|
|
continue;
|
|
}
|
|
while ((ln = fgetln(f, &lnlen))) {
|
|
if ((cs = memchr(ln, '#', lnlen - 1)))
|
|
lnlen = cs - ln + 1;
|
|
if (ln[lnlen - 1] == '\n' ||
|
|
ln[lnlen - 1] == '#')
|
|
ln[lnlen - 1] = '\0';
|
|
else {
|
|
cs = alloca(lnlen + 1);
|
|
strlcpy(cs, ln, lnlen + 1);
|
|
ln = cs;
|
|
}
|
|
add_param(j, NULL, IP__MOUNT_FROM_FSTAB, ln);
|
|
}
|
|
fclose(f);
|
|
}
|
|
}
|
|
if (error)
|
|
failed(j);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Import parameters into libjail's binary jailparam format.
|
|
*/
|
|
int
|
|
import_params(struct cfjail *j)
|
|
{
|
|
struct cfparam *p;
|
|
struct cfstring *s, *ts;
|
|
struct jailparam *jp;
|
|
char *value, *cs;
|
|
size_t vallen;
|
|
int error;
|
|
|
|
error = 0;
|
|
j->njp = 0;
|
|
TAILQ_FOREACH(p, &j->params, tq)
|
|
if (!(p->flags & PF_INTERNAL))
|
|
j->njp++;
|
|
j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
|
|
TAILQ_FOREACH(p, &j->params, tq) {
|
|
if (p->flags & PF_INTERNAL)
|
|
continue;
|
|
if (jailparam_init(jp, p->name) < 0) {
|
|
error = -1;
|
|
jail_warnx(j, "%s", jail_errmsg);
|
|
jp++;
|
|
continue;
|
|
}
|
|
if (TAILQ_EMPTY(&p->val))
|
|
value = NULL;
|
|
else if (!jp->jp_elemlen ||
|
|
!TAILQ_NEXT(TAILQ_FIRST(&p->val), tq)) {
|
|
/*
|
|
* Scalar parameters silently discard multiple (array)
|
|
* values, keeping only the last value added. This
|
|
* lets values added from the command line append to
|
|
* arrays wthout pre-checking the type.
|
|
*/
|
|
value = TAILQ_LAST(&p->val, cfstrings)->s;
|
|
} else {
|
|
/*
|
|
* Convert arrays into comma-separated strings, which
|
|
* jailparam_import will then convert back into arrays.
|
|
*/
|
|
vallen = 0;
|
|
TAILQ_FOREACH(s, &p->val, tq)
|
|
vallen += s->len + 1;
|
|
value = alloca(vallen);
|
|
cs = value;
|
|
TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
|
|
memcpy(cs, s->s, s->len);
|
|
cs += s->len + 1;
|
|
cs[-1] = ',';
|
|
}
|
|
value[vallen - 1] = '\0';
|
|
}
|
|
if (jailparam_import(jp, value) < 0) {
|
|
error = -1;
|
|
jail_warnx(j, "%s", jail_errmsg);
|
|
}
|
|
jp++;
|
|
}
|
|
if (error) {
|
|
jailparam_free(j->jp, j->njp);
|
|
free(j->jp);
|
|
j->jp = NULL;
|
|
failed(j);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Check if options are equal (with or without the "no" prefix).
|
|
*/
|
|
int
|
|
equalopts(const char *opt1, const char *opt2)
|
|
{
|
|
char *p;
|
|
|
|
/* "opt" vs. "opt" or "noopt" vs. "noopt" */
|
|
if (strcmp(opt1, opt2) == 0)
|
|
return (1);
|
|
/* "noopt" vs. "opt" */
|
|
if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
|
|
return (1);
|
|
/* "opt" vs. "noopt" */
|
|
if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
|
|
return (1);
|
|
while ((p = strchr(opt1, '.')) != NULL &&
|
|
!strncmp(opt1, opt2, ++p - opt1)) {
|
|
opt2 += p - opt1;
|
|
opt1 = p;
|
|
/* "foo.noopt" vs. "foo.opt" */
|
|
if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
|
|
return (1);
|
|
/* "foo.opt" vs. "foo.noopt" */
|
|
if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* See if a jail name matches a wildcard.
|
|
*/
|
|
int
|
|
wild_jail_match(const char *jname, const char *wname)
|
|
{
|
|
const char *jc, *jd, *wc, *wd;
|
|
|
|
/*
|
|
* A non-final "*" component in the wild name matches a single jail
|
|
* component, and a final "*" matches one or more jail components.
|
|
*/
|
|
for (jc = jname, wc = wname;
|
|
(jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
|
|
jc = jd + 1, wc = wd + 1)
|
|
if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
|
|
return 0;
|
|
return (!strcmp(jc, wc) || !strcmp(wc, "*"));
|
|
}
|
|
|
|
/*
|
|
* Return if a jail name is a wildcard.
|
|
*/
|
|
int
|
|
wild_jail_name(const char *wname)
|
|
{
|
|
const char *wc;
|
|
|
|
for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
|
|
if ((wc == wname || wc[-1] == '.') &&
|
|
(wc[1] == '\0' || wc[1] == '.'))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Free a parameter record and all its strings and variables.
|
|
*/
|
|
static void
|
|
free_param(struct cfparams *pp, struct cfparam *p)
|
|
{
|
|
free(p->name);
|
|
free_param_strings(p);
|
|
TAILQ_REMOVE(pp, p, tq);
|
|
free(p);
|
|
}
|
|
|
|
static void
|
|
free_param_strings(struct cfparam *p)
|
|
{
|
|
struct cfstring *s;
|
|
struct cfvar *v;
|
|
|
|
while ((s = TAILQ_FIRST(&p->val))) {
|
|
free(s->s);
|
|
while ((v = STAILQ_FIRST(&s->vars))) {
|
|
free(v->name);
|
|
STAILQ_REMOVE_HEAD(&s->vars, tq);
|
|
free(v);
|
|
}
|
|
TAILQ_REMOVE(&p->val, s, tq);
|
|
free(s);
|
|
}
|
|
}
|