text: /*-
   * Copyright (c) 2011 James Gritton.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * $FreeBSD: soc2013/dpl/head/usr.sbin/jail/jailp.h 250055 2013-03-28 21:02:49Z jamie $
   */
  
  #include <sys/param.h>
  #include <sys/types.h>
  #include <sys/jail.h>
  #include <sys/queue.h>
  #include <sys/time.h>
  
  #include <jail.h>
  
  #define CONF_FILE	"/etc/jail.conf"
  
  #define DEP_FROM	0
  #define DEP_TO		1
  
  #define DF_SEEN		0x01	/* Dependency has been followed */
  #define DF_LIGHT	0x02	/* Implied dependency on jail existence only */
  #define DF_NOFAIL	0x04	/* Don't propigate failed jails */
  
  #define PF_VAR		0x01	/* This is a variable, not a true parameter */
  #define PF_APPEND	0x02	/* Append to existing parameter list */
  #define PF_BAD		0x04	/* Unable to resolve parameter value */
  #define PF_INTERNAL	0x08	/* Internal parameter, not passed to kernel */
  #define PF_BOOL		0x10	/* Boolean parameter */
  #define PF_INT		0x20	/* Integer parameter */
  #define PF_CONV		0x40	/* Parameter duplicated in converted form */
  #define PF_REV		0x80	/* Run commands in reverse order on stopping */
  
  #define JF_START	0x0001	/* -c */
  #define JF_SET		0x0002	/* -m */
  #define JF_STOP		0x0004	/* -r */
  #define JF_DEPEND	0x0008	/* Operation required by dependency */
  #define JF_WILD		0x0010	/* Not specified on the command line */
  #define JF_FAILED	0x0020	/* Operation failed */
  #define JF_PARAMS	0x0040	/* Parameters checked and imported */
  #define JF_RDTUN	0x0080	/* Create-only parameter check has been done */
  #define JF_PERSIST	0x0100	/* Jail is temporarily persistent */
  #define JF_TIMEOUT	0x0200	/* A command (or process kill) timed out */
  #define JF_SLEEPQ	0x0400	/* Waiting on a command and/or timeout */
  
  #define JF_OP_MASK		(JF_START | JF_SET | JF_STOP)
  #define JF_RESTART		(JF_START | JF_STOP)
  #define JF_START_SET		(JF_START | JF_SET)
  #define JF_SET_RESTART		(JF_SET | JF_STOP)
  #define JF_START_SET_RESTART	(JF_START | JF_SET | JF_STOP)
  #define JF_DO_STOP(js)		(((js) & (JF_SET | JF_STOP)) == JF_STOP)
  
  enum intparam {
  	IP__NULL = 0,		/* Null command */
  	IP_ALLOW_DYING,		/* Allow making changes to a dying jail */
  	IP_COMMAND,		/* Command run inside jail at creation */
  	IP_DEPEND,		/* Jail starts after (stops before) another */
  	IP_EXEC_CLEAN,		/* Run commands in a clean environment */
  	IP_EXEC_CONSOLELOG,	/* Redirect optput for commands run in jail */
  	IP_EXEC_FIB,		/* Run jailed commands with this FIB */
  	IP_EXEC_JAIL_USER,	/* Run jailed commands as this user */
  	IP_EXEC_POSTSTART,	/* Commands run outside jail after creating */
  	IP_EXEC_POSTSTOP,	/* Commands run outside jail after removing */
  	IP_EXEC_PRESTART,	/* Commands run outside jail before creating */
  	IP_EXEC_PRESTOP,	/* Commands run outside jail before removing */
  	IP_EXEC_START,		/* Commands run inside jail on creation */
  	IP_EXEC_STOP,		/* Commands run inside jail on removal */
  	IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */
  	IP_EXEC_SYSTEM_USER,	/* Run non-jailed commands as this user */
  	IP_EXEC_TIMEOUT,	/* Time to wait for a command to complete */
  #if defined(INET) || defined(INET6)
  	IP_INTERFACE,		/* Add IP addresses to this interface */
  	IP_IP_HOSTNAME,		/* Get jail IP address(es) from hostname */
  #endif
  	IP_MOUNT,		/* Mount points in fstab(5) form */
  	IP_MOUNT_DEVFS,		/* Mount /dev under prison root */
  	IP_MOUNT_FSTAB,		/* A standard fstab(5) file */
  	IP_STOP_TIMEOUT,	/* Time to wait after sending SIGTERM */
  	IP_VNET_INTERFACE,	/* Assign interface(s) to vnet jail */
  #ifdef INET
  	IP__IP4_IFADDR,		/* Copy of ip4.addr with interface/netmask */
  #endif
  #ifdef INET6
  	IP__IP6_IFADDR,		/* Copy of ip6.addr with interface/prefixlen */
  #endif
  	IP__MOUNT_FROM_FSTAB,	/* Line from mount.fstab file */
  	IP__OP,			/* Placeholder for requested operation */
  	KP_ALLOW_CHFLAGS,
  	KP_ALLOW_MOUNT,
  	KP_ALLOW_RAW_SOCKETS,
  	KP_ALLOW_SET_HOSTNAME,
  	KP_ALLOW_SOCKET_AF,
  	KP_ALLOW_SYSVIPC,
  	KP_DEVFS_RULESET,
  	KP_ENFORCE_STATFS,
  	KP_HOST_HOSTNAME,
  #ifdef INET
  	KP_IP4_ADDR,
  #endif
  #ifdef INET6
  	KP_IP6_ADDR,
  #endif
  	KP_JID,
  	KP_NAME,
  	KP_PATH,
  	KP_PERSIST,
  	KP_SECURELEVEL,
  	KP_VNET,
  	IP_NPARAM
  };
  
  STAILQ_HEAD(cfvars, cfvar);
  
  struct cfvar {
  	STAILQ_ENTRY(cfvar)	tq;
  	char			*name;
  	size_t			pos;
  };
  
  TAILQ_HEAD(cfstrings, cfstring);
  
  struct cfstring {
  	TAILQ_ENTRY(cfstring)	tq;
  	char			*s;
  	size_t			len;
  	struct cfvars		vars;
  };
  
  TAILQ_HEAD(cfparams, cfparam);
  
  struct cfparam {
  	TAILQ_ENTRY(cfparam)	tq;
  	char			*name;
  	struct cfstrings	val;
  	unsigned		flags;
  	int			gen;
  };
  
  TAILQ_HEAD(cfjails, cfjail);
  STAILQ_HEAD(cfdepends, cfdepend);
  
  struct cfjail {
  	TAILQ_ENTRY(cfjail)	tq;
  	char			*name;
  	char			*comline;
  	struct cfparams		params;
  	struct cfdepends	dep[2];
  	struct cfjails		*queue;
  	struct cfparam		*intparams[IP_NPARAM];
  	struct cfstring		*comstring;
  	struct jailparam	*jp;
  	struct timespec		timeout;
  	const enum intparam	*comparam;
  	unsigned		flags;
  	int			jid;
  	int			seq;
  	int			pstatus;
  	int			ndeps;
  	int			njp;
  	int			nprocs;
  };
  
  struct cfdepend {
  	STAILQ_ENTRY(cfdepend)	tq[2];
  	struct cfjail		*j[2];
  	unsigned		flags;
  };
  
  extern void *emalloc(size_t);
  extern void *erealloc(void *, size_t);
  extern char *estrdup(const char *);
  extern int create_jail(struct cfjail *j);
  extern void failed(struct cfjail *j);
  extern void jail_note(const struct cfjail *j, const char *fmt, ...);
  extern void jail_warnx(const struct cfjail *j, const char *fmt, ...);
  
  extern int next_command(struct cfjail *j);
  extern int finish_command(struct cfjail *j);
  extern struct cfjail *next_proc(int nonblock);
  
  extern void load_config(void);
  extern struct cfjail *add_jail(void);
  extern void add_param(struct cfjail *j, const struct cfparam *p,
      enum intparam ipnum, const char *value);
  extern int bool_param(const struct cfparam *p);
  extern int int_param(const struct cfparam *p, int *ip);
  extern const char *string_param(const struct cfparam *p);
  extern int check_intparams(struct cfjail *j);
  extern int import_params(struct cfjail *j);
  extern int equalopts(const char *opt1, const char *opt2);
  extern int wild_jail_name(const char *wname);
  extern int wild_jail_match(const char *jname, const char *wname);
  
  extern void dep_setup(int docf);
  extern int dep_check(struct cfjail *j);
  extern void dep_done(struct cfjail *j, unsigned flags);
  extern void dep_reset(struct cfjail *j);
  extern struct cfjail *next_jail(void);
  extern int start_state(const char *target, int docf, unsigned state,
      int running);
  extern void requeue(struct cfjail *j, struct cfjails *queue);
  
  extern void yyerror(const char *);
  extern int yylex(void);
  
  extern struct cfjails cfjails;
  extern struct cfjails ready;
  extern struct cfjails depend;
  extern const char *cfname;
  extern int iflag;
  extern int note_remove;
  extern int paralimit;
  extern int verbose;
  