1214117Sjamie/*- 2223190Sjamie * Copyright (c) 2011 James Gritton. 3214117Sjamie * All rights reserved. 4214117Sjamie * 5214117Sjamie * Redistribution and use in source and binary forms, with or without 6214117Sjamie * modification, are permitted provided that the following conditions 7214117Sjamie * are met: 8214117Sjamie * 1. Redistributions of source code must retain the above copyright 9214117Sjamie * notice, this list of conditions and the following disclaimer. 10214117Sjamie * 2. Redistributions in binary form must reproduce the above copyright 11214117Sjamie * notice, this list of conditions and the following disclaimer in the 12214117Sjamie * documentation and/or other materials provided with the distribution. 13214117Sjamie * 14214117Sjamie * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15214117Sjamie * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16214117Sjamie * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17214117Sjamie * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18214117Sjamie * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19214117Sjamie * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20214117Sjamie * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21214117Sjamie * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22214117Sjamie * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23214117Sjamie * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24214117Sjamie * SUCH DAMAGE. 25214117Sjamie * 26214117Sjamie * $FreeBSD$ 27214117Sjamie */ 28214117Sjamie 29214117Sjamie#include <sys/param.h> 30214117Sjamie#include <sys/types.h> 31214117Sjamie#include <sys/jail.h> 32214117Sjamie#include <sys/queue.h> 33214117Sjamie#include <sys/time.h> 34214117Sjamie 35214117Sjamie#include <jail.h> 36214117Sjamie 37214117Sjamie#define CONF_FILE "/etc/jail.conf" 38214117Sjamie 39214117Sjamie#define DEP_FROM 0 40214117Sjamie#define DEP_TO 1 41214117Sjamie 42214117Sjamie#define DF_SEEN 0x01 /* Dependency has been followed */ 43214117Sjamie#define DF_LIGHT 0x02 /* Implied dependency on jail existence only */ 44293290Sbdrewery#define DF_NOFAIL 0x04 /* Don't propagate failed jails */ 45214117Sjamie 46214117Sjamie#define PF_VAR 0x01 /* This is a variable, not a true parameter */ 47214117Sjamie#define PF_APPEND 0x02 /* Append to existing parameter list */ 48214117Sjamie#define PF_BAD 0x04 /* Unable to resolve parameter value */ 49214117Sjamie#define PF_INTERNAL 0x08 /* Internal parameter, not passed to kernel */ 50214117Sjamie#define PF_BOOL 0x10 /* Boolean parameter */ 51214117Sjamie#define PF_INT 0x20 /* Integer parameter */ 52214423Sjamie#define PF_CONV 0x40 /* Parameter duplicated in converted form */ 53248854Sjamie#define PF_REV 0x80 /* Run commands in reverse order on stopping */ 54285827Shrs#define PF_IMMUTABLE 0x100 /* Immutable parameter */ 55214117Sjamie 56214117Sjamie#define JF_START 0x0001 /* -c */ 57214117Sjamie#define JF_SET 0x0002 /* -m */ 58214117Sjamie#define JF_STOP 0x0004 /* -r */ 59214117Sjamie#define JF_DEPEND 0x0008 /* Operation required by dependency */ 60214117Sjamie#define JF_WILD 0x0010 /* Not specified on the command line */ 61214117Sjamie#define JF_FAILED 0x0020 /* Operation failed */ 62214649Sjamie#define JF_PARAMS 0x0040 /* Parameters checked and imported */ 63214649Sjamie#define JF_RDTUN 0x0080 /* Create-only parameter check has been done */ 64223189Sjamie#define JF_PERSIST 0x0100 /* Jail is temporarily persistent */ 65223189Sjamie#define JF_TIMEOUT 0x0200 /* A command (or process kill) timed out */ 66223189Sjamie#define JF_SLEEPQ 0x0400 /* Waiting on a command and/or timeout */ 67302958Sjamie#define JF_FROM_RUNQ 0x0800 /* Has already been on the run queue */ 68214117Sjamie 69214117Sjamie#define JF_OP_MASK (JF_START | JF_SET | JF_STOP) 70214117Sjamie#define JF_RESTART (JF_START | JF_STOP) 71214117Sjamie#define JF_START_SET (JF_START | JF_SET) 72214117Sjamie#define JF_SET_RESTART (JF_SET | JF_STOP) 73214117Sjamie#define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP) 74214117Sjamie#define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP) 75214117Sjamie 76214117Sjamieenum intparam { 77234988Sjamie IP__NULL = 0, /* Null command */ 78234988Sjamie IP_ALLOW_DYING, /* Allow making changes to a dying jail */ 79214117Sjamie IP_COMMAND, /* Command run inside jail at creation */ 80214117Sjamie IP_DEPEND, /* Jail starts after (stops before) another */ 81214117Sjamie IP_EXEC_CLEAN, /* Run commands in a clean environment */ 82214117Sjamie IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */ 83214117Sjamie IP_EXEC_FIB, /* Run jailed commands with this FIB */ 84214117Sjamie IP_EXEC_JAIL_USER, /* Run jailed commands as this user */ 85214117Sjamie IP_EXEC_POSTSTART, /* Commands run outside jail after creating */ 86214117Sjamie IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */ 87214117Sjamie IP_EXEC_PRESTART, /* Commands run outside jail before creating */ 88214117Sjamie IP_EXEC_PRESTOP, /* Commands run outside jail before removing */ 89214117Sjamie IP_EXEC_START, /* Commands run inside jail on creation */ 90214117Sjamie IP_EXEC_STOP, /* Commands run inside jail on removal */ 91214117Sjamie IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */ 92214117Sjamie IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */ 93214117Sjamie IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */ 94223351Sjamie#if defined(INET) || defined(INET6) 95214117Sjamie IP_INTERFACE, /* Add IP addresses to this interface */ 96214117Sjamie IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */ 97223351Sjamie#endif 98214117Sjamie IP_MOUNT, /* Mount points in fstab(5) form */ 99214117Sjamie IP_MOUNT_DEVFS, /* Mount /dev under prison root */ 100256387Shrs IP_MOUNT_FDESCFS, /* Mount /dev/fd under prison root */ 101278484Sjamie IP_MOUNT_PROCFS, /* Mount /proc under prison root */ 102214423Sjamie IP_MOUNT_FSTAB, /* A standard fstab(5) file */ 103214117Sjamie IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */ 104214423Sjamie IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */ 105223351Sjamie#ifdef INET 106214117Sjamie IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */ 107223351Sjamie#endif 108214117Sjamie#ifdef INET6 109214117Sjamie IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */ 110214117Sjamie#endif 111214783Sjamie IP__MOUNT_FROM_FSTAB, /* Line from mount.fstab file */ 112223189Sjamie IP__OP, /* Placeholder for requested operation */ 113214423Sjamie KP_ALLOW_CHFLAGS, 114214423Sjamie KP_ALLOW_MOUNT, 115214423Sjamie KP_ALLOW_RAW_SOCKETS, 116214423Sjamie KP_ALLOW_SET_HOSTNAME, 117214423Sjamie KP_ALLOW_SOCKET_AF, 118214423Sjamie KP_ALLOW_SYSVIPC, 119232242Sjamie KP_DEVFS_RULESET, 120214423Sjamie KP_ENFORCE_STATFS, 121214423Sjamie KP_HOST_HOSTNAME, 122223351Sjamie#ifdef INET 123214117Sjamie KP_IP4_ADDR, 124223351Sjamie#endif 125214117Sjamie#ifdef INET6 126214117Sjamie KP_IP6_ADDR, 127214117Sjamie#endif 128214117Sjamie KP_JID, 129214117Sjamie KP_NAME, 130214117Sjamie KP_PATH, 131214117Sjamie KP_PERSIST, 132214423Sjamie KP_SECURELEVEL, 133214117Sjamie KP_VNET, 134214117Sjamie IP_NPARAM 135214117Sjamie}; 136214117Sjamie 137214117SjamieSTAILQ_HEAD(cfvars, cfvar); 138214117Sjamie 139214117Sjamiestruct cfvar { 140214117Sjamie STAILQ_ENTRY(cfvar) tq; 141214117Sjamie char *name; 142214117Sjamie size_t pos; 143214117Sjamie}; 144214117Sjamie 145223188SjamieTAILQ_HEAD(cfstrings, cfstring); 146214117Sjamie 147214117Sjamiestruct cfstring { 148223188Sjamie TAILQ_ENTRY(cfstring) tq; 149214117Sjamie char *s; 150214117Sjamie size_t len; 151214117Sjamie struct cfvars vars; 152214117Sjamie}; 153214117Sjamie 154214117SjamieTAILQ_HEAD(cfparams, cfparam); 155214117Sjamie 156214117Sjamiestruct cfparam { 157214117Sjamie TAILQ_ENTRY(cfparam) tq; 158214117Sjamie char *name; 159214117Sjamie struct cfstrings val; 160214117Sjamie unsigned flags; 161214117Sjamie int gen; 162214117Sjamie}; 163214117Sjamie 164214117SjamieTAILQ_HEAD(cfjails, cfjail); 165214117SjamieSTAILQ_HEAD(cfdepends, cfdepend); 166214117Sjamie 167214117Sjamiestruct cfjail { 168214117Sjamie TAILQ_ENTRY(cfjail) tq; 169214117Sjamie char *name; 170214117Sjamie char *comline; 171214117Sjamie struct cfparams params; 172214117Sjamie struct cfdepends dep[2]; 173214117Sjamie struct cfjails *queue; 174214117Sjamie struct cfparam *intparams[IP_NPARAM]; 175214117Sjamie struct cfstring *comstring; 176214117Sjamie struct jailparam *jp; 177214117Sjamie struct timespec timeout; 178223189Sjamie const enum intparam *comparam; 179214117Sjamie unsigned flags; 180214117Sjamie int jid; 181214117Sjamie int seq; 182214117Sjamie int pstatus; 183214117Sjamie int ndeps; 184214117Sjamie int njp; 185214117Sjamie int nprocs; 186214117Sjamie}; 187214117Sjamie 188214117Sjamiestruct cfdepend { 189214117Sjamie STAILQ_ENTRY(cfdepend) tq[2]; 190214117Sjamie struct cfjail *j[2]; 191214117Sjamie unsigned flags; 192214117Sjamie}; 193214117Sjamie 194214117Sjamieextern void *emalloc(size_t); 195214117Sjamieextern void *erealloc(void *, size_t); 196214117Sjamieextern char *estrdup(const char *); 197223263Sjamieextern int create_jail(struct cfjail *j); 198214117Sjamieextern void failed(struct cfjail *j); 199214117Sjamieextern void jail_note(const struct cfjail *j, const char *fmt, ...); 200214117Sjamieextern void jail_warnx(const struct cfjail *j, const char *fmt, ...); 201214117Sjamie 202223189Sjamieextern int next_command(struct cfjail *j); 203216367Sjamieextern int finish_command(struct cfjail *j); 204214117Sjamieextern struct cfjail *next_proc(int nonblock); 205214117Sjamie 206214117Sjamieextern void load_config(void); 207214117Sjamieextern struct cfjail *add_jail(void); 208214117Sjamieextern void add_param(struct cfjail *j, const struct cfparam *p, 209214423Sjamie enum intparam ipnum, const char *value); 210214117Sjamieextern int bool_param(const struct cfparam *p); 211214117Sjamieextern int int_param(const struct cfparam *p, int *ip); 212214117Sjamieextern const char *string_param(const struct cfparam *p); 213214649Sjamieextern int check_intparams(struct cfjail *j); 214214117Sjamieextern int import_params(struct cfjail *j); 215214117Sjamieextern int equalopts(const char *opt1, const char *opt2); 216214117Sjamieextern int wild_jail_name(const char *wname); 217214117Sjamieextern int wild_jail_match(const char *jname, const char *wname); 218214117Sjamie 219214117Sjamieextern void dep_setup(int docf); 220214117Sjamieextern int dep_check(struct cfjail *j); 221214117Sjamieextern void dep_done(struct cfjail *j, unsigned flags); 222214117Sjamieextern void dep_reset(struct cfjail *j); 223214117Sjamieextern struct cfjail *next_jail(void); 224231238Sjamieextern int start_state(const char *target, int docf, unsigned state, 225231238Sjamie int running); 226214117Sjamieextern void requeue(struct cfjail *j, struct cfjails *queue); 227302958Sjamieextern void requeue_head(struct cfjail *j, struct cfjails *queue); 228214117Sjamie 229214117Sjamieextern void yyerror(const char *); 230214117Sjamieextern int yylex(void); 231214117Sjamie 232214117Sjamieextern struct cfjails cfjails; 233214117Sjamieextern struct cfjails ready; 234216367Sjamieextern struct cfjails depend; 235214117Sjamieextern const char *cfname; 236236198Sjamieextern int iflag; 237223263Sjamieextern int note_remove; 238216367Sjamieextern int paralimit; 239214117Sjamieextern int verbose; 240