517 lines
13 KiB
C
517 lines
13 KiB
C
/*-
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* Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
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* Copyright (c) 2008 Bjoern A. Zeeb <bz@FreeBSD.org>
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* Copyright (c) 2009 James Gritton <jamie@FreeBSD.org>
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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/param.h>
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#include <sys/jail.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 <errno.h>
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#include <jail.h>
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#include <limits.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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#define JP_USER 0x01000000
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#define JP_OPT 0x02000000
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#define PRINT_DEFAULT 0x01
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#define PRINT_HEADER 0x02
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#define PRINT_NAMEVAL 0x04
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#define PRINT_QUOTED 0x08
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#define PRINT_SKIP 0x10
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#define PRINT_VERBOSE 0x20
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#define PRINT_JAIL_NAME 0x40
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static struct jailparam *params;
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static int *param_parent;
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static int nparams;
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#ifdef INET6
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static int ip6_ok;
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#endif
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#ifdef INET
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static int ip4_ok;
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#endif
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static int add_param(const char *name, void *value, size_t valuelen,
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struct jailparam *source, unsigned flags);
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static int sort_param(const void *a, const void *b);
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static char *noname(const char *name);
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static char *nononame(const char *name);
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static int print_jail(int pflags, int jflags);
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static void quoted_print(char *str);
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int
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main(int argc, char **argv)
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{
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char *dot, *ep, *jname;
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int c, i, jflags, jid, lastjid, pflags, spc;
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jname = NULL;
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pflags = jflags = jid = 0;
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while ((c = getopt(argc, argv, "adj:hNnqsv")) >= 0)
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switch (c) {
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case 'a':
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case 'd':
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jflags |= JAIL_DYING;
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break;
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case 'j':
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jid = strtoul(optarg, &ep, 10);
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if (!jid || *ep) {
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jid = 0;
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jname = optarg;
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}
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break;
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case 'h':
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pflags = (pflags & ~(PRINT_SKIP | PRINT_VERBOSE)) |
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PRINT_HEADER;
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break;
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case 'N':
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pflags |= PRINT_JAIL_NAME;
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break;
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case 'n':
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pflags = (pflags & ~PRINT_VERBOSE) | PRINT_NAMEVAL;
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break;
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case 'q':
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pflags |= PRINT_QUOTED;
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break;
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case 's':
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pflags = (pflags & ~(PRINT_HEADER | PRINT_VERBOSE)) |
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PRINT_NAMEVAL | PRINT_QUOTED | PRINT_SKIP;
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break;
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case 'v':
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pflags = (pflags &
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~(PRINT_HEADER | PRINT_NAMEVAL | PRINT_SKIP)) |
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PRINT_VERBOSE;
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break;
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default:
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errx(1, "usage: jls [-dhNnqv] [-j jail] [param ...]");
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}
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#ifdef INET6
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ip6_ok = feature_present("inet6");
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#endif
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#ifdef INET
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ip4_ok = feature_present("inet");
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#endif
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/* Add the parameters to print. */
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if (optind == argc) {
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if (pflags & (PRINT_HEADER | PRINT_NAMEVAL))
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add_param("all", NULL, (size_t)0, NULL, JP_USER);
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else if (pflags & PRINT_VERBOSE) {
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add_param("jid", NULL, (size_t)0, NULL, JP_USER);
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add_param("host.hostname", NULL, (size_t)0, NULL,
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JP_USER);
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add_param("path", NULL, (size_t)0, NULL, JP_USER);
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add_param("name", NULL, (size_t)0, NULL, JP_USER);
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add_param("dying", NULL, (size_t)0, NULL, JP_USER);
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add_param("cpuset.id", NULL, (size_t)0, NULL, JP_USER);
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#ifdef INET
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if (ip4_ok)
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add_param("ip4.addr", NULL, (size_t)0, NULL,
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JP_USER);
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#endif
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#ifdef INET6
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if (ip6_ok)
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add_param("ip6.addr", NULL, (size_t)0, NULL,
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JP_USER | JP_OPT);
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#endif
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} else {
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pflags |= PRINT_DEFAULT;
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if (pflags & PRINT_JAIL_NAME)
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add_param("name", NULL, (size_t)0, NULL, JP_USER);
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else
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add_param("jid", NULL, (size_t)0, NULL, JP_USER);
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#ifdef INET
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if (ip4_ok)
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add_param("ip4.addr", NULL, (size_t)0, NULL,
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JP_USER);
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#endif
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add_param("host.hostname", NULL, (size_t)0, NULL,
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JP_USER);
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add_param("path", NULL, (size_t)0, NULL, JP_USER);
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}
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} else
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while (optind < argc)
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add_param(argv[optind++], NULL, (size_t)0, NULL,
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JP_USER);
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if (pflags & PRINT_SKIP) {
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/* Check for parameters with jailsys parents. */
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for (i = 0; i < nparams; i++) {
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if ((params[i].jp_flags & JP_USER) &&
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(dot = strchr(params[i].jp_name, '.'))) {
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*dot = 0;
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param_parent[i] = add_param(params[i].jp_name,
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NULL, (size_t)0, NULL, JP_OPT);
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*dot = '.';
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}
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}
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}
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/* Add the index key parameters. */
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if (jid != 0)
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add_param("jid", &jid, sizeof(jid), NULL, 0);
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else if (jname != NULL)
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add_param("name", jname, strlen(jname), NULL, 0);
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else
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add_param("lastjid", &lastjid, sizeof(lastjid), NULL, 0);
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/* Print a header line if requested. */
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if (pflags & PRINT_VERBOSE)
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printf(" JID Hostname Path\n"
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" Name State\n"
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" CPUSetID\n"
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" IP Address(es)\n");
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else if (pflags & PRINT_DEFAULT)
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if (pflags & PRINT_JAIL_NAME)
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printf(" JID IP Address "
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"Hostname Path\n");
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else
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printf(" JID IP Address "
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"Hostname Path\n");
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else if (pflags & PRINT_HEADER) {
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for (i = spc = 0; i < nparams; i++)
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if (params[i].jp_flags & JP_USER) {
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if (spc)
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putchar(' ');
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else
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spc = 1;
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fputs(params[i].jp_name, stdout);
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}
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putchar('\n');
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}
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/* Fetch the jail(s) and print the paramters. */
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if (jid != 0 || jname != NULL) {
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if (print_jail(pflags, jflags) < 0)
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errx(1, "%s", jail_errmsg);
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} else {
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for (lastjid = 0;
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(lastjid = print_jail(pflags, jflags)) >= 0; )
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;
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if (errno != 0 && errno != ENOENT)
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errx(1, "%s", jail_errmsg);
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}
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return (0);
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}
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static int
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add_param(const char *name, void *value, size_t valuelen,
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struct jailparam *source, unsigned flags)
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{
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struct jailparam *param, *tparams;
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int i, tnparams;
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static int paramlistsize;
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/* The pseudo-parameter "all" scans the list of available parameters. */
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if (!strcmp(name, "all")) {
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tnparams = jailparam_all(&tparams);
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if (tnparams < 0)
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errx(1, "%s", jail_errmsg);
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qsort(tparams, (size_t)tnparams, sizeof(struct jailparam),
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sort_param);
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for (i = 0; i < tnparams; i++)
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add_param(tparams[i].jp_name, NULL, (size_t)0,
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tparams + i, flags);
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free(tparams);
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return -1;
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}
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/* Check for repeat parameters. */
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for (i = 0; i < nparams; i++)
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if (!strcmp(name, params[i].jp_name)) {
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if (value != NULL && jailparam_import_raw(params + i,
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value, valuelen) < 0)
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errx(1, "%s", jail_errmsg);
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params[i].jp_flags |= flags;
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if (source != NULL)
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jailparam_free(source, 1);
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return i;
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}
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/* Make sure there is room for the new param record. */
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if (!nparams) {
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paramlistsize = 32;
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params = malloc(paramlistsize * sizeof(*params));
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param_parent = malloc(paramlistsize * sizeof(*param_parent));
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if (params == NULL || param_parent == NULL)
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err(1, "malloc");
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} else if (nparams >= paramlistsize) {
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paramlistsize *= 2;
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params = realloc(params, paramlistsize * sizeof(*params));
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param_parent = realloc(param_parent,
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paramlistsize * sizeof(*param_parent));
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if (params == NULL || param_parent == NULL)
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err(1, "realloc");
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}
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/* Look up the parameter. */
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param_parent[nparams] = -1;
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param = params + nparams++;
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if (source != NULL) {
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*param = *source;
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param->jp_flags |= flags;
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return param - params;
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}
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if (jailparam_init(param, name) < 0)
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errx(1, "%s", jail_errmsg);
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param->jp_flags = flags;
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if ((value != NULL ? jailparam_import_raw(param, value, valuelen)
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: jailparam_import(param, value)) < 0) {
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if (flags & JP_OPT) {
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nparams--;
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return (-1);
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}
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errx(1, "%s", jail_errmsg);
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}
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return param - params;
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}
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static int
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sort_param(const void *a, const void *b)
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{
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const struct jailparam *parama, *paramb;
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char *ap, *bp;
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/* Put top-level parameters first. */
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parama = a;
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paramb = b;
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ap = strchr(parama->jp_name, '.');
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bp = strchr(paramb->jp_name, '.');
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if (ap && !bp)
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return (1);
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if (bp && !ap)
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return (-1);
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return (strcmp(parama->jp_name, paramb->jp_name));
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}
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static char *
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noname(const char *name)
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{
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char *nname, *p;
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nname = malloc(strlen(name) + 3);
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if (nname == NULL)
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err(1, "malloc");
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p = strrchr(name, '.');
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if (p != NULL)
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sprintf(nname, "%.*s.no%s", (int)(p - name), name, p + 1);
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else
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sprintf(nname, "no%s", name);
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return nname;
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}
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static char *
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nononame(const char *name)
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{
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char *nname, *p;
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p = strrchr(name, '.');
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if (strncmp(p ? p + 1 : name, "no", 2))
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return NULL;
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nname = malloc(strlen(name) - 1);
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if (nname == NULL)
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err(1, "malloc");
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if (p != NULL)
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sprintf(nname, "%.*s.%s", (int)(p - name), name, p + 3);
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else
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strcpy(nname, name + 2);
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return nname;
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}
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static int
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print_jail(int pflags, int jflags)
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{
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char *nname;
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char **param_values;
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int i, ai, jid, count, n, spc;
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char ipbuf[INET6_ADDRSTRLEN];
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jid = jailparam_get(params, nparams, jflags);
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if (jid < 0)
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return jid;
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if (pflags & PRINT_VERBOSE) {
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printf("%6d %-29.29s %.74s\n"
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"%6s %-29.29s %.74s\n"
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"%6s %-6d\n",
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*(int *)params[0].jp_value,
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(char *)params[1].jp_value,
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(char *)params[2].jp_value,
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"",
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(char *)params[3].jp_value,
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*(int *)params[4].jp_value ? "DYING" : "ACTIVE",
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"",
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*(int *)params[5].jp_value);
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n = 6;
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#ifdef INET
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if (ip4_ok && !strcmp(params[n].jp_name, "ip4.addr")) {
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count = params[n].jp_valuelen / sizeof(struct in_addr);
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for (ai = 0; ai < count; ai++)
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if (inet_ntop(AF_INET,
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&((struct in_addr *)params[n].jp_value)[ai],
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ipbuf, sizeof(ipbuf)) == NULL)
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err(1, "inet_ntop");
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else
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printf("%6s %-15.15s\n", "", ipbuf);
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n++;
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}
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#endif
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#ifdef INET6
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if (ip6_ok && !strcmp(params[n].jp_name, "ip6.addr")) {
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count = params[n].jp_valuelen / sizeof(struct in6_addr);
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for (ai = 0; ai < count; ai++)
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if (inet_ntop(AF_INET6,
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&((struct in6_addr *)
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params[n].jp_value)[ai],
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ipbuf, sizeof(ipbuf)) == NULL)
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err(1, "inet_ntop");
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else
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printf("%6s %s\n", "", ipbuf);
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n++;
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}
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#endif
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} else if (pflags & PRINT_DEFAULT) {
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if (pflags & PRINT_JAIL_NAME)
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printf(" %-15s ", (char *)params[0].jp_value);
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else
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printf("%6d ", *(int *)params[0].jp_value);
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printf("%-15.15s %-29.29s %.74s\n",
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#ifdef INET
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(!ip4_ok || params[1].jp_valuelen == 0) ? "-"
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: inet_ntoa(*(struct in_addr *)params[1].jp_value),
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(char *)params[2-!ip4_ok].jp_value,
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(char *)params[3-!ip4_ok].jp_value);
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#else
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"-",
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(char *)params[1].jp_value,
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(char *)params[2].jp_value);
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#endif
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} else {
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param_values = alloca(nparams * sizeof(*param_values));
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for (i = 0; i < nparams; i++) {
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if (!(params[i].jp_flags & JP_USER))
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continue;
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param_values[i] = jailparam_export(params + i);
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if (param_values[i] == NULL)
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errx(1, "%s", jail_errmsg);
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}
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for (i = spc = 0; i < nparams; i++) {
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if (!(params[i].jp_flags & JP_USER))
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continue;
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if ((pflags & PRINT_SKIP) &&
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((!(params[i].jp_ctltype &
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(CTLFLAG_WR | CTLFLAG_TUN))) ||
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(param_parent[i] >= 0 &&
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*(int *)params[param_parent[i]].jp_value !=
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JAIL_SYS_NEW)))
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continue;
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if (spc)
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putchar(' ');
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else
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spc = 1;
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if (pflags & PRINT_NAMEVAL) {
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/*
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* Generally "name=value", but for booleans
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* either "name" or "noname".
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*/
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if (params[i].jp_flags &
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(JP_BOOL | JP_NOBOOL)) {
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if (*(int *)params[i].jp_value)
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printf("%s", params[i].jp_name);
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else {
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nname = (params[i].jp_flags &
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JP_NOBOOL) ?
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nononame(params[i].jp_name)
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: noname(params[i].jp_name);
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printf("%s", nname);
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free(nname);
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}
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continue;
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}
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printf("%s=", params[i].jp_name);
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}
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if (params[i].jp_valuelen == 0) {
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if (pflags & PRINT_QUOTED)
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printf("\"\"");
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else if (!(pflags & PRINT_NAMEVAL))
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putchar('-');
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} else
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quoted_print(param_values[i]);
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}
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putchar('\n');
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for (i = 0; i < nparams; i++)
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if (params[i].jp_flags & JP_USER)
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free(param_values[i]);
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}
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return (jid);
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}
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static void
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quoted_print(char *str)
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{
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int c, qc;
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char *p = str;
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/* An empty string needs quoting. */
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if (!*p) {
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fputs("\"\"", stdout);
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return;
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}
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/*
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|
* The value will be surrounded by quotes if it contains spaces
|
|
* or quotes.
|
|
*/
|
|
qc = strchr(p, '\'') ? '"'
|
|
: strchr(p, '"') ? '\''
|
|
: strchr(p, ' ') || strchr(p, '\t') ? '"'
|
|
: 0;
|
|
if (qc)
|
|
putchar(qc);
|
|
while ((c = *p++)) {
|
|
if (c == '\\' || c == qc)
|
|
putchar('\\');
|
|
putchar(c);
|
|
}
|
|
if (qc)
|
|
putchar(qc);
|
|
}
|