/**
 * @file   xinetd.c
 * @brief  xinetd probe
 * @author "Daniel Kopecek" <dkopecek@redhat.com>
 *
 */

/*
 * Copyright 2010 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors:
 *   Daniel Kopecek <dkopecek@redhat.com>
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <probe-api.h>
#include <probe/probe.h>
#include <probe/entcmp.h>
#include <probe/option.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include <limits.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <fnmatch.h>
#include <common/assume.h>
#include <alloc.h>
#include <bfind.h>
#include <common/debug_priv.h>
#include <netdb.h>
#include "../SEAP/generic/rbt/rbt.h"

#define PATH_SEPARATOR '/'

/*
 * the code bellow implements a minimal xinetd configuration parser
 */

#define XICFG_PARSER_IGNORE_UNKNOWN 1
#define XICFG_PARSER_IGNORE_INVSECT 0
#define XICFG_PARSER_MAXFILESIZE    655360 /**< hard limit for configuration file size; 640K ought to be enough for anybody */
#define XICFG_PARSER_MAXFILECOUNT   128    /**< a reasonable high limit for the number of configuration files to be opened at one time */

struct xiconf_attr {
	char    *name;   /* name of the attribute */
	size_t   offset; /* offset of the corresponding member in the xinetd_service_t structure */
	int (*op_assign)(void *, char *); /*  = */
	int (*op_insert)(void *, char *); /* += */
	int (*op_remove)(void *, char *); /* -= */
	int (*op_coerce)(void *, int);    /* coerce to another type */
	int (*op_merge) (void *, void *, int);  /* merge two values */
	int      sections; /* which type of sections are valid */
	int      pass_arg;
};

#define XIATTR_SECTION_NIL   0x01
#define XIATTR_SECTION_DEF   0x02
#define XIATTR_SECTION_SRV   0x04

#define XIATTR_OPARG_LOCAL   0 /* local service attribute */
#define XIATTR_OPARG_GLOBAL  1 /* xiconf_t structure */

#define XIATTR_MERGE_DEFAULTS 1

#define XICONF_SECTION_DEFAULTS XIATTR_SECTION_DEF
#define XICONF_SECTION_SERVICE  XIATTR_SECTION_SRV

#define OPRES_SUCCESS 0
#define OPRES_ESYNTAX 1 /* Invalid syntax */
#define OPRES_EINVAL  2 /* Invalid operation */
#define OPRES_EFAULT  3 /* Invalid memory access */
#define OPRES_ELIMIT  4 /* Limit reached */

typedef struct xiconf_service {
	/*
	 * Attributes needed by the xinetd probe
	 */
	char    *id;
	char    *type;
	char    **flags;
	char    *socket_type;
	char    *name;
	char    *protocol;
	char    *user;
	char    *server;
	char    *server_args;
	char    **only_from;
	char    **no_access;

	uint16_t port;

	bool disable;
	bool wait;
	int def_disabled;
	int def_enabled;

	bool internal;
	bool unlisted;
	bool rpc;

	struct xiconf_service *next;

#if 0 /* Unused attributes; Maybe we will need them in some future version. */
	bool groups;
	bool mdns;
	bool enabled;
	char *log_on_success;
	char *log_on_failure;
	int32_t instances;
	int32_t nice;
	int32_t rpc_number;
	int32_t per_source;
	float max_load;
	int64_t rlimit_as;
	int64_t rlimit_cpu;
	int64_t rlimit_data;
	int64_t rlimit_rss;
	int64_t rlimit_stack;
	char *group;
	char *access_times;
	char *log_type;
	char *rpc_version;
	char *env;
	char *passenv;
	char *redirect;
	char *bind;
	char *interface;
	char *banner;
	char *banner_success;
	char *banner_fail;
	char *cps;
	char *umask;
	char *deny_time;
	char *libwrap;
#endif /* 0 */
} xiconf_service_t;

typedef struct {
	xiconf_service_t **srv;
	uint32_t           cnt;
} xiconf_strans_t;

#define XICFG_STRANS_MAXKEYLEN 256

typedef struct {
	int             fd;    /**< file descriptor */
	char           *cpath; /**< path to the configuration file */
	time_t          mtime; /**< modification time of the file */
	rbt_str_node_t *nodes; /**< node pointers in the service tree that belong to this file; */
	size_t          count; /**< number of node pointers */
	char           *inmem; /**< contents of the file mmaped or copied into memory */
	size_t          inlen; /**< in-memory size */
	size_t          inoff; /**< in-memory offset */
	int             flags; /**< flags; see bellow */
	unsigned int    depth; /**< include depth */
} xiconf_file_t;

#define XICONF_FILE_MMAPED  0x00000001 /**< try to mmap the file */
#define XICONF_FILE_PERSIST 0x00000002 /**< keep the file open/mmaped */
#define XICONF_FILE_DEAD    0x00000004 /**< this item can be skipped/deleted/reused for a different file */

typedef struct {
	xiconf_file_t   **cfile; /**< */
	size_t            count; /**< */
	rbt_t            *stree; /**< service tree */
	rbt_t            *ttree; /**< service name & protocol to ID(s) tree */
	xiconf_service_t *defaults; /**< parsed defaults for services */
} xiconf_t;

xiconf_t *xiconf_parse(const char *path, unsigned int max_depth);
void xiconf_free(xiconf_t *xiconf);
int xiconf_update(xiconf_t *xiconf);
int xiconf_parse_section(xiconf_t *xiconf, xiconf_file_t *xifile, int type, char *name);
int xiconf_parse_service(xiconf_file_t *file, xiconf_service_t *service);
int xiconf_parse_defaults(xiconf_file_t *file, xiconf_service_t *defaults, rbt_t *stree);
xiconf_strans_t *xiconf_getservice(xiconf_t *xiconf, char *name, char *prot);
xiconf_strans_t *xiconf_dump(xiconf_t *xiconf);
void xiconf_strans_free(xiconf_strans_t *strans);

int op_assign_bool(void *var, char *val);
int op_assign_u16(void *var, char *val);
int op_merge_u16(void *dst, void *src, int type);
int op_assign_str(void *var, char *val);
int op_merge_str(void *dst, void *src, int type);
int op_assign_strl(void *var, char *val);
int op_insert_strl(void *var, char *val);
int op_remove_strl(void *var, char *val);
int op_assign_disabled(void *var, char *val);
int op_assign_enabled(void *var, char *val);

#ifndef STR
# define STR(s) #s
#endif

#define XICONF_ATTR(name, op_a, op_i, op_r) \
	{ STR(name), offsetof(xiconf_service_t, name), (op_a), (op_i), (op_r) }

/*
 * Service only attribute.
 *
 * Flags set:
 *  - service section flag
 *
 * Functions implementing the operators get the pointer to the
 * corresponding xiconf_service_t structure item pointer (using
 * offsetof) as their first argument.
 */
#define XICONF_SO_ATTR(name, op_a, op_i, op_r, op_c, op_m)		\
	{ STR(name), offsetof(xiconf_service_t, name), (op_a), (op_i), (op_r), (op_c), (op_m), XIATTR_SECTION_SRV, XIATTR_OPARG_LOCAL }

/*
 * Defaults only attribute.
 *
 * Flags set:
 *  - defaults section flag
 *
 * Type of the first argument to be passed to the operator
 * functions has to be specified in the last argument.
 * Recognized types are:
 *   XIATTR_OPTARG_LOCAL  - ptr(service + offsetof(attr_name))
 *   XIATTR_OPTARG_GLOBAL - pointer to the xiconf_t structure
 */
#define XICONF_DO_ATTR(name, op_a, op_i, op_r, op_c, op_m, off, arg)	\
	{ STR(name), (off), (op_a), (op_i), (op_r), (op_c), (op_m), XIATTR_SECTION_DEF, (arg) }

/*
 * Service attribute which default attribute can be specified
 * in the defaults section.
 *
 * Flags set:
 *  - service section flag
 *  - defaults section flag
 *
 * Functions implementing the operators get the pointer to the
 * corresponding xiconf_service_t structure item pointer (using
 * offsetof) as their first argument.
 */
#define XICONF_SD_ATTR(name, op_a, op_i, op_r, op_c, op_m)		\
	{ STR(name), offsetof(xiconf_service_t, name), (op_a), (op_i), (op_r), (op_c), (op_m), XIATTR_SECTION_SRV|XIATTR_SECTION_DEF, XIATTR_OPARG_LOCAL }

/*
 * Service attribute table; keep this table sorted by attribute name
 */
struct xiconf_attr xiattr_table[] = {
	/*
	 * XICONF_ATTR(attr_name, op_assign, op_insert, op_remove)
	 */
	//XICONF_ATTR(access_times, NULL, NULL, NULL),
	//XICONF_ATTR(banner, NULL, NULL, NULL),
	//XICONF_ATTR(banner_fail, NULL, NULL, NULL),
	//XICONF_ATTR(banner_success, NULL, NULL, NULL),
	//XICONF_ATTR(bind, NULL, NULL, NULL),
	//XICONF_ATTR(cps, NULL, NULL, NULL),
	//XICONF_ATTR(deny_time, NULL, NULL, NULL),

	XICONF_SO_ATTR(disable,
		       &op_assign_bool, NULL, NULL, NULL, NULL),
	XICONF_DO_ATTR(disabled,
		       &op_assign_disabled, NULL, NULL, NULL, NULL, 0, XIATTR_OPARG_GLOBAL),
	XICONF_DO_ATTR(enabled,
		       &op_assign_enabled, NULL, NULL, NULL, NULL, 0, XIATTR_OPARG_GLOBAL),

	//XICONF_ATTR(env, NULL, NULL, NULL),

	XICONF_SO_ATTR(flags,
		       &op_assign_strl, &op_insert_strl, &op_remove_strl, NULL, NULL),

	//XICONF_ATTR(group, NULL, NULL, NULL),
	//XICONF_ATTR(groups, NULL, NULL, NULL),

	XICONF_SO_ATTR(id,
		       &op_assign_str, NULL, NULL, NULL, NULL),

	//XICONF_ATTR(instances, NULL, NULL, NULL),
	//XICONF_ATTR(interface, NULL, NULL, NULL),
	//XICONF_ATTR(libwrap, NULL, NULL, NULL),
	//XICONF_ATTR(log_on_failure, NULL, NULL, NULL),
	//XICONF_ATTR(log_on_success, NULL, NULL, NULL),
	//XICONF_ATTR(log_type, NULL, NULL, NULL),
	//XICONF_ATTR(max_load, NULL, NULL, NULL),
	//XICONF_ATTR(mdns, NULL, NULL, NULL),
	//XICONF_ATTR(nice, NULL, NULL, NULL),

	XICONF_SD_ATTR(no_access,
		       &op_assign_strl, &op_insert_strl, &op_remove_strl, NULL, NULL),
	XICONF_SD_ATTR(only_from,
		       &op_assign_strl, &op_insert_strl, &op_remove_strl, NULL, NULL),

	//XICONF_ATTR(passenv, NULL, NULL, NULL),
	//XICONF_ATTR(per_source, NULL, NULL, NULL),

	XICONF_SO_ATTR(port,
		       &op_assign_u16, NULL, NULL, NULL, &op_merge_u16),
	XICONF_SO_ATTR(protocol,
		       &op_assign_str, NULL, NULL, NULL, &op_merge_str),

	//XICONF_ATTR(redirect, NULL, NULL, NULL),
	//XICONF_ATTR(rlimit_as, NULL, NULL, NULL),
	//XICONF_ATTR(rlimit_cpu, NULL, NULL, NULL),
	//XICONF_ATTR(rlimit_data, NULL, NULL, NULL),
	//XICONF_ATTR(rlimit_rss, NULL, NULL, NULL),
	//XICONF_ATTR(rlimit_stack, NULL, NULL, NULL),
	//XICONF_ATTR(rpc_number, NULL, NULL, NULL),
	//XICONF_ATTR(rpc_version, NULL, NULL, NULL),

	XICONF_SO_ATTR(server,
		       &op_assign_str, NULL, NULL, NULL, &op_merge_str),
	XICONF_SO_ATTR(server_args,
		       &op_assign_str, NULL, NULL, NULL, &op_merge_str),
	XICONF_SO_ATTR(socket_type,
		       &op_assign_str, NULL, NULL, NULL, NULL),
	XICONF_SO_ATTR(type,
		       &op_assign_str, NULL, NULL, NULL, NULL),

	//XICONF_ATTR(umask, NULL, NULL, NULL),

	XICONF_SO_ATTR(user,
		       &op_assign_str, NULL, NULL, NULL, NULL),
	XICONF_SO_ATTR(wait,
		       &op_assign_bool, NULL, NULL, NULL, NULL)
};

#define XIATTR_TABLE_COUNT (sizeof xiattr_table / sizeof(struct xiconf_attr))

#define xiattr_ptr(ptr, off) ((void *)(((uint8_t *)(ptr))+(off)))

static int xiattr_cmp(void *a, void *b)
{
	return strcmp((char *)a, ((struct xiconf_attr *)b)->name);
}

/*
 * Allocate and initialize a xinetd configuration structure
 */
static xiconf_t *xiconf_new(void)
{
	xiconf_t *xiconf;

	xiconf = oscap_talloc(xiconf_t);
	xiconf->cfile = oscap_alloc(sizeof(xiconf_file_t *));
	xiconf->count = 0;
	xiconf->stree = rbt_str_new();
	xiconf->ttree = rbt_str_new();
	xiconf->defaults = NULL;

	return (xiconf);
}

static xiconf_service_t *xiconf_service_new(void)
{
	xiconf_service_t *service;

	service = oscap_talloc(xiconf_service_t);

	service->id    = NULL;
	service->type  = NULL;
	service->flags = NULL;
	service->socket_type = NULL;
	service->name     = NULL;
	service->protocol = NULL;
	service->user   = NULL;
	service->server = NULL;
	service->server_args = NULL;
	service->only_from   = NULL;
	service->no_access   = NULL;
	service->port    = 0;
	service->disable = 0;
	service->wait    = 0;
	service->def_disabled = 0;
	service->def_enabled  = 0;

	service->internal = 0;
	service->unlisted = 0;
	service->rpc      = 0;

	service->next = NULL;

	return (service);
}

static void xiconf_service_free(xiconf_service_t *service)
{
        if (service == NULL)
                return;

#define NONNULL_FREE(p) if (service->p != NULL) oscap_free(service->p)

        if (service->id != service->name)
                NONNULL_FREE(id);

        NONNULL_FREE(name);
        NONNULL_FREE(type);
        NONNULL_FREE(flags);
        NONNULL_FREE(socket_type);
        NONNULL_FREE(protocol);
        NONNULL_FREE(user);
        NONNULL_FREE(server);
        NONNULL_FREE(server_args);
        NONNULL_FREE(only_from);
        NONNULL_FREE(no_access);

	if (service->next != NULL) {
		xiconf_service_free(service->next);
	}

	oscap_free(service);
}

static void xiconf_stree_free_cb(struct rbt_str_node *n)
{
        xiconf_service_free(n->data);
}

static void xiconf_ttree_free_cb(struct rbt_str_node *n)
{
        xiconf_strans_free(n->data);
	oscap_free(n->key);
}

void xiconf_free(xiconf_t *xiconf)
{
	register size_t i;

	if (xiconf == NULL)
		return;

	for (i = 0; i < xiconf->count; ++i) {
		if (xiconf->cfile[i]) {
			if (xiconf->cfile[i]->cpath)
				oscap_free(xiconf->cfile[i]->cpath);
			if (xiconf->cfile[i]->inmem)
				oscap_free(xiconf->cfile[i]->inmem);
			oscap_free(xiconf->cfile[i]);
		}
	}

	oscap_free(xiconf->cfile);

        rbt_str_free_cb(xiconf->stree, xiconf_stree_free_cb);
        rbt_str_free_cb(xiconf->ttree, xiconf_ttree_free_cb);

        if (xiconf->defaults != NULL) {
	        oscap_free(xiconf->defaults->name);
	        oscap_free(xiconf->defaults);
        }

	oscap_free(xiconf);

	return;
}

static xiconf_file_t *xiconf_read(const char *path, int flags)
{
	int fd;
	struct stat st;
	xiconf_file_t *file;

	fd = open(path, O_RDONLY);

	if (fd < 0)
		return (NULL);

	if (fstat(fd, &st) < 0) {
		close (fd);
		return (NULL);
	}

	if ((st.st_mode & S_IFMT) != S_IFREG) {
		dE("Not a regular file: %s", path);
		close (fd);
		return (NULL);
	}

	if (st.st_size > XICFG_PARSER_MAXFILESIZE) {
		/* You're probably trying to parse a wrong file... or 640k is not enough for you. */
		close (fd);

		return (NULL);
	}

	file = oscap_talloc(xiconf_file_t);

	/* initialize items that don't need to have extra memory allocated for them */
	file->fd    = fd;
	file->inlen = (size_t)st.st_size;
	file->inoff = 0;
	file->mtime = st.st_mtime;
	file->nodes = NULL;
	file->count = 0;
	file->flags = flags;

#if !defined(XICFG_PARSER_WITHOUT_MMAP) && defined(HAVE_MMAP)
	file->inmem = mmap (NULL, file->inlen, PROT_READ, MAP_SHARED, file->fd, 0);

	if (file->inmem == MAP_FAILED)
#endif
	{
		/* fallback method - copy the contents into memory */

		file->inmem = oscap_alloc(file->inlen);

		if (read (file->fd, file->inmem, file->inlen) != (ssize_t)file->inlen) {
			/* Can't read the contents of the file */
			close (fd);
			oscap_free(file);
			return (NULL);
		}

		/*
		 * We have the contents of the file and don't need the fd anymore.
		 * Unless the FILE_PERSIST flag is set, close fd now. The allocated
		 * memory will be freed after the parsing is done
		 */
		if (!(flags & XICONF_FILE_PERSIST)) {
			close(fd);
			file->fd = -1;
		}
	}

	/* now initialize item that do need extra memory to be allocated */
	file->cpath = strdup(path);

	return (file);
}

static int xiconf_add_cfile(xiconf_t *xiconf, const char *path, int depth)
{
	xiconf_file_t *xifile;

	if (xiconf->count + 1 > XICFG_PARSER_MAXFILECOUNT) {
		dE("include count limit reached: %u", XICFG_PARSER_MAXFILECOUNT);
		return (-1);
	}

	dI("Reading included file: %s", path);
	xifile = xiconf_read (path, 0);

	if (xifile == NULL) {
		dW("Failed to read file: %s", path);
		return (-1);
	}

	xifile->depth = depth;
	xiconf->cfile = oscap_realloc(xiconf->cfile, sizeof(xiconf_file_t *) * ++xiconf->count);
	xiconf->cfile[xiconf->count - 1] = xifile;

	dI("Added new file to the cfile queue: %s; fi=%zu", path, xiconf->count - 1);

	return (0);
}

#define tmpbuf_def(size) char __tmpbuf[size]
#define tmpbuf_get(size) (((sizeof __tmpbuf)/sizeof(char))<(size)?oscap_alloc(sizeof(char)*(size)):__tmpbuf)
#define tmpbuf_free(ptr) do { if ((ptr) != __tmpbuf) oscap_free(ptr); (ptr) = NULL; } while(0)

xiconf_t *xiconf_parse(const char *path, unsigned int max_depth)
{
	xiconf_t      *xiconf;
	xiconf_file_t *xifile; /* pointer to the currently parsed file */
	size_t         findex; /* index of currently parsed file */

	tmpbuf_def(512);

	if (path == NULL)
		return (NULL);

	xiconf = xiconf_new();

	if (xiconf == NULL)
		return (NULL);

	xifile = xiconf_read(path, 0);

	if (xifile == NULL) {
		xiconf_free(xiconf);
		return (NULL);
	}

	xifile->depth = 0;
	xiconf->cfile[0] = xifile;
	xiconf->count = 1;

	for (findex = 0; findex < xiconf->count; ++findex) {
		char  *buffer;
		register char  *l_pbeg, *l_pend;
		register size_t bufidx,  l_size;

		/* sanity checks */
		if (xifile->depth > max_depth && xiconf->count > findex)
			abort();

		xifile = xiconf->cfile[findex];

		for (;xifile->inoff < xifile->inlen;) {
			/* locate end-of-line & compute the line lenght */
			l_pbeg = xifile->inmem + xifile->inoff;
			l_pend = strchr(l_pbeg, '\n');

			if (l_pend == NULL) {
				l_pend = l_pbeg + xifile->inlen;
				l_size = xifile->inlen;
			} else
				l_size = (size_t)(l_pend - l_pbeg);

			xifile->inoff += l_size + 1; /* update the next line offset */

			/*
			 * copy the current line into a separate buffer
			 * where we can modify the data (change spaces to
			 * newlines, etc.)
			 */
			buffer = tmpbuf_get(l_size + 1);
			bufidx = 0;
			memcpy (buffer, l_pbeg, l_size);
			buffer[l_size] = ' ';
			*strchr(buffer,  ' ') = '\0';

			/* skip whitespaces before the keyword */
			while(isspace(buffer[bufidx])) ++bufidx;

			switch(buffer[bufidx]) {
			case  's':
				if (strcmp("ervice",  buffer + bufidx + 1) == 0) {
					/* skip the service keyword */
					bufidx += 8;

					if (bufidx >= l_size) {
						tmpbuf_free(buffer);
						xiconf_free(xiconf);
						return (NULL);
					}

					/* skip whitespaces before the keyword */
					while(isspace(buffer[bufidx])) ++bufidx;

					if (bufidx >= l_size) {
						tmpbuf_free(buffer);
						xiconf_free(xiconf);
						return (NULL);
					}

					*strchr(buffer + bufidx, ' ') = '\0';

					if (xiconf_parse_section (xiconf, xifile, XICONF_SECTION_SERVICE, buffer + bufidx) != 0) {
						tmpbuf_free(buffer);
						xiconf_free(xiconf);
						return (NULL);
					}
				}
				break;
			case  'd':
				if (strcmp("efaults", buffer + bufidx + 1) == 0) {
					if (xiconf_parse_section (xiconf, xifile, XICONF_SECTION_DEFAULTS, buffer + bufidx) != 0) {
						tmpbuf_free(buffer);
						xiconf_free(xiconf);
						return (NULL);
					}
				}
				break;
			case '#':
				/* comment */
			case '\0':
				/* blank line */
				break;
			case 'i':
			{
#define XICONF_INCTYPE_FILE 0
#define XICONF_INCTYPE_DIR  1
				int            inctype = -1;
				char          *inclarg;
				char           pathbuf[PATH_MAX+1];
				size_t         incllen;

				incllen = strlen (buffer + bufidx);

				if (strncmp("nclude", buffer + bufidx + 1, 6) != 0)
					break;
				switch (buffer[bufidx+1+6]) {
				case '\0':
					inctype = XICONF_INCTYPE_FILE;
					break;
				case  'd':
					if (buffer[bufidx+1+6+1] ==  'i' &&
					    buffer[bufidx+1+6+2] ==  'r' &&
					    buffer[bufidx+1+6+3] == '\0')
					{
						inctype = XICONF_INCTYPE_DIR;
					}
					break;
				}

				/*
				 * Get the include(dir) argument
				 */
				bufidx += strlen("includedir");
				while(isspace(buffer[bufidx])) ++bufidx;
				inclarg = buffer + bufidx + 1;
				buffer[l_size] = '\0';

				if (*inclarg == '\0') {
					dW("Found includedir directive without an argument!");
					break;
				}

				if (xifile->depth + 1 > max_depth) {
					dE("include depth limit reached: %u", max_depth);
					break;
				}

				switch (inctype) {
				case XICONF_INCTYPE_FILE:
					dI("includefile: %s", pathbuf);

					if (xiconf_add_cfile (xiconf, pathbuf, xifile->depth + 1) != 0)
						continue;
					else
						break;
				case XICONF_INCTYPE_DIR:
				{
					DIR           *dirfp;
					struct dirent  dent, *dentp = NULL;

					dI("includedir open: %s", inclarg);
					dirfp = opendir (inclarg);

					if (dirfp == NULL) {
						dW("Can't open includedir: %s; %d, %s.", inclarg, errno, strerror (errno));
						break;
					}

					strcpy (pathbuf, inclarg);
					incllen = strlen(inclarg);

					if (pathbuf[incllen - 1] != PATH_SEPARATOR) {
						if (incllen < PATH_MAX) {
							pathbuf[incllen++] =  '/';
							pathbuf[incllen  ] = '\0';
						} else {
							dE("Length of the includedir argument is out of range: len=%zu, max=%zu",
							   incllen, PATH_MAX);
							closedir(dirfp);
							break;
						}
					}

					for (;;) {
						if (readdir_r (dirfp, &dent, &dentp) != 0) {
							dW("Can't read directory: %s; %d, %s.", inclarg, errno, strerror (errno));
							break;
						}

						if (dentp == NULL)
							break;

						if (fnmatch ("*~",  dent.d_name, FNM_PATHNAME) == 0 ||
						    fnmatch ("*.*", dent.d_name, FNM_PATHNAME) == 0)
						{
							dI("Skipping: %s", dent.d_name);
							continue;
						}

						strcpy(pathbuf + incllen, dent.d_name);

						if (xiconf_add_cfile (xiconf, pathbuf, xifile->depth + 1) != 0)
							continue;
					}

					dI("includedir close: %s", inclarg);
					closedir(dirfp);
					break;
				}}
				break;
			}
			default:
				dE("Don't know how to parse the line: %s", buffer);
				tmpbuf_free(buffer);

				return (NULL);
			}

			tmpbuf_free(buffer);
		}
	}

	return (xiconf);
}

int xiconf_update(xiconf_t *xiconf)
{
	dI("Not implemented yet.");
	return (0);
}

static int xiconf_service_merge_defaults(xiconf_service_t *dst, xiconf_service_t *def)
{
	register size_t i;

	for (i = 0; i < XIATTR_TABLE_COUNT; ++i) {
		if (xiattr_table[i].pass_arg == XIATTR_OPARG_LOCAL &&
		    xiattr_table[i].sections  & XIATTR_SECTION_DEF &&
		    xiattr_table[i].op_merge != NULL)
		{
			if (xiattr_table[i].op_merge (xiattr_ptr(dst, xiattr_table[i].offset),
						      xiattr_ptr(def, xiattr_table[i].offset), XIATTR_MERGE_DEFAULTS) != 0)
			{
				dE("Merge failed. Merge operation returned a non-zero value.");
				    return (-1);
			}
		}
	}

	return (0);
}

int xiconf_parse_section(xiconf_t *xiconf, xiconf_file_t *xifile, int type, char *name)
{
	xiconf_service_t *snew, *scur;
	char *buffer;
	register size_t bufidx, keyidx;
	char  *l_pbeg;
	char  *l_pend;
	size_t l_size;
	char *key, *op, *opval;
	void **opvar;
	int (*opfun)(void *, char *);
	struct xiconf_attr *xiattr;
	tmpbuf_def(128);

	if (type == XICONF_SECTION_DEFAULTS && xiconf->defaults != NULL) {
		dE("defaults section was already parsed!");
		return (-1);
	} else if (type == XICONF_SECTION_SERVICE && name == NULL) {
		dE("Don't know how to handle anonymous service sections!");
		return (-1);
	}

	/*
	 * Find the left brace. Only the left brace, whitespace
	 * characters before and after it and a newline character
	 * at the end are allowed here.
	 */
	while(isspace(xifile->inmem[xifile->inoff]))
		++xifile->inoff;
	if (xifile->inmem[xifile->inoff] != '{')
		return(-1);
	else
		++xifile->inoff;
	while(xifile->inmem[xifile->inoff] != '\n' &&
	      isspace(xifile->inmem[xifile->inoff]))
		++xifile->inoff;
	if (xifile->inmem[xifile->inoff] != '\n')
		return (-1);
	else
		++xifile->inoff;

	/*
	 * Now there should be only <keyword> <op> <value> items, comments
	 * blank lines or a right brace which signals and of the section.
	 */
	snew = xiconf_service_new();
	snew->name = strdup(name);

	for (;;) {
		/*
		 * Find out the line boundaries.
		 */
		l_pbeg = xifile->inmem + xifile->inoff;
		l_pend = strchr(l_pbeg, '\n');

		if (l_pend == NULL) {
			l_pend = l_pbeg + xifile->inlen;
			l_size = xifile->inlen;
		} else
			l_size = (size_t)(l_pend - l_pbeg);

		xifile->inoff += l_size + 1; /* update the next line offset */

		/*
		 * copy the current line into a separate buffer
		 * where we can modify the data (change spaces to
		 * newlines, etc.)
		 */
		buffer = tmpbuf_get(l_size + 1);
		bufidx = 0;

		memcpy (buffer, l_pbeg, l_size);

		buffer[l_size] = '\0';

		/* skip whitespaces in the line buffer */
		while(isspace(buffer[bufidx])) ++bufidx;

		/*
		 * now there should be a attribute name, comment
		 * or the end-of-line.
		 */
		key = strdup(buffer + bufidx);
		if (key == NULL)
			exit(ENOMEM);

		for (keyidx = 0; ! isspace(key[keyidx]) && key[keyidx]; keyidx++);
		key[keyidx] = '\0';

		switch (*key) {
		case  '#':
		case '\0':
			/* skip this line */
			break;
		case  '}':
			/* end of section reached */
			++bufidx;

			while(isspace(buffer[bufidx]))
				++bufidx;
			if (buffer[bufidx] != '\0')
				goto fail;

			goto finish_section;
		default:
			op  = key + strlen(key) + 1;

			while(isspace(*op)) ++op;

			if (op == l_pend)
				goto fail;

			xiattr = oscap_bfind(xiattr_table, XIATTR_TABLE_COUNT, sizeof(struct xiconf_attr), key, &xiattr_cmp);

			if (xiattr == NULL) {
				dW("Unknown keyword: %s", key);
#if XICFG_PARSER_IGNORE_UNKNOWN != 1
				goto fail;
#else
				break;
#endif
			}

			if (!(type & xiattr->sections)) {
				dW("Don't know how to handle attribute %s in this sections type (%d)",
				   key, type);
#if XICFG_PARSER_IGNORE_INVSECT != 1
				goto fail;
#else
				break;
#endif
			}

			switch (xiattr->pass_arg) {
			case XIATTR_OPARG_LOCAL:
				opvar = (void *)xiattr_ptr(snew, xiattr->offset);
				dI("local opvar");
				break;
			case XIATTR_OPARG_GLOBAL:
				opvar = (void *)xiconf;
				dI("global opvar");
				break;
			default:
				abort ();
			}

			if (*op == '=') {
				opfun = xiattr->op_assign;
				opval = op + 1;

				dI("assign(%p): var=%s (at %p+%zu = %p), val=%s",
				   opfun, xiattr->name, snew, xiattr->offset, opvar, opval);

			} else if (*op == '+' && *(op+1) == '=') {
				opfun = xiattr->op_insert;
				opval = op + 2;

				dI("insert(%p): var=%s (at %p+%zu = %p), val=%s",
				   opfun, xiattr->name, snew, xiattr->offset, opvar, opval);

			} else if (*op == '-' && *(op+1) == '=') {
				opfun = xiattr->op_remove;
				opval = op + 2;

				dI("remove(%p): var=%s (at %p+%zu = %p), val=%s",
				   opfun, xiattr->name, snew, xiattr->offset, opvar, opval);
			} else
				goto fail;

			while (*opval && isspace(*opval)) ++opval;
			if (opfun == NULL)
				break;
			if (opfun(opvar, opval) != 0)
				goto fail;
		}

		tmpbuf_free(buffer);
		free(key);
		key = NULL;
	}

finish_section:
	if (buffer != NULL) {
		dW("Line buffer not freed; freeing now...");
		tmpbuf_free(buffer);
	}

	if (key != NULL) {
		dW("key not freed; freeing now...");
		free(key);
	}

	switch (type) {
	case XICONF_SECTION_DEFAULTS:
		xiconf->defaults = snew;
		break;
	case XICONF_SECTION_SERVICE:
	{
		xiconf_strans_t *st;
		char   st_key[XICFG_STRANS_MAXKEYLEN+1];

		if (snew->id == NULL)
			snew->id = snew->name;

		scur = NULL;
		/*
		 * TODO: get a write lock
		 */
		rbt_str_get(xiconf->stree, snew->id, (void *)&scur);

		if (scur == NULL) {
			if (rbt_str_add (xiconf->stree, snew->id, snew) != 0) {
				dE("Can't add service (%s) into the service tree (%p)",
				   snew->id, xiconf->stree);

				xiconf_service_free(snew);
				return (-1);
			}
		} else {
			if (scur->next == NULL) {
				scur->next = snew;
			} else {
				snew->next = scur->next;
				scur->next = snew;
			}
		}
		scur = snew;
		if (scur->protocol == NULL) {
			// First try to guess the protocol from the socket_type setting
			if (scur->socket_type != NULL) {
				// dgram => udp
				if (strcmp(scur->socket_type, "dgram") == 0) {
					scur->protocol = strdup("udp");
				}
				// stream => tcp
				else if (strcmp(scur->socket_type, "stream") == 0) {
					scur->protocol = strdup("tcp");
				}
			}
			// If we still don't know the protocol, then get the default from /etc/services
			if (scur->protocol == NULL) {
				struct servent *service = getservbyname(scur->name, NULL);
				dI("protocol is empty, trying to guess from /etc/services for %s", scur->name);
				if (service != NULL) {
					scur->protocol = strdup(service->s_proto);
					dI("service %s has default protocol=%s", scur->name, scur->protocol);
				}
				endservent();
			}
		}
		if (scur->port == 0) {
			struct servent *service = getservbyname(scur->name, scur->protocol);
			dI("port not set, trying to guess from /etc/services for %s", scur->name);
			if (service != NULL) {
				if (service->s_port > 0 && service->s_port < 65536) {
					scur->port = ntohs((uint16_t)service->s_port);
					dI("service %s has default port=%hu/%s",
					   scur->name, scur->port, scur->protocol);
				}
			}
			endservent();
		}
		if (scur->type != 0) {
			// Check that the type is one of the allowed values by OVAL.
			// The xinetd configuration acually allows any combination of
			// the values. In such case, we set the type to an empty string.
			const char *type_enum[] = { "RPC", "INTERNAL", "UNLISTED", "TCPMUX", "TCPMUXPLUS", NULL };
			bool type_enum_match = false;
			size_t i;
			for (i = 0; type_enum[i]; ++i) {
				if (strcmp(scur->type, type_enum[i]) == 0) {
					type_enum_match = true;
					break;
				}
			}
			if (!type_enum_match) {
				dE("The value of the type setting does not match"
				   " any of the allowed values by OVAL: %s", scur->type);
				scur->type = "";
			}
		}
		/*
		 * Add entry to the ttree for (name, protocol) -> (id) translation
		 * (in case it's not already there)
		 */
		st = NULL;
		strcpy(st_key, scur->name);
		strcat(st_key, scur->protocol);

		rbt_str_get(xiconf->ttree, st_key, (void *)&st);

		if (st == NULL) {
			dI("new strans record: k=%s", st_key);

			st = oscap_talloc (xiconf_strans_t);
			st->cnt = 1;
			st->srv = oscap_alloc (sizeof (xiconf_service_t *));
			st->srv[0] = scur;

			if (rbt_str_add (xiconf->ttree, strdup(st_key), st) != 0) {
				dE("Can't add strans record (k=%s) into the strans tree (%p)",
				   st_key, xiconf->ttree);
				return (-1);
			}
		} else {
			dI("adding new strans record to an exiting one: k=%s, cnt=%u+1",
			   st_key, st->cnt);

			st->srv = oscap_realloc(st->srv, sizeof (xiconf_service_t *) * ++(st->cnt));
			st->srv[st->cnt - 1] = scur;
		}

		/*
		 * Merge the service entry with defaults so as to fill all unset attributes
		 * that happen to have a default value defined.
		 */
		if (xiconf_service_merge_defaults(scur, xiconf->defaults) != 0) {
			dE("Failed to merge service (%p, id=%s) with defaults (%p)",
			   scur, scur->id, xiconf->defaults);
			return (-1);
		}

		/* TODO: resolve values for all attributes */
		/* TODO: unlock the service tree */
	}
		break;
	default:
		abort ();
	}

	return (0);
fail:
	tmpbuf_free(buffer);
	if (key) {
		dW("fail: key not freed; freeing now...");
		free(key);
	}

	if (snew->name) {
		dW("fail: snew->name not freed; freeing now...");
		free(snew->name);
	}
	free(snew);

	return (-1);
}

xiconf_strans_t *xiconf_getservice(xiconf_t *xiconf, char *name, char *prot)
{
	char             strans_key[XICFG_STRANS_MAXKEYLEN+1];
	xiconf_strans_t *strans = NULL;

	assume_d(xiconf != NULL, NULL);

	if (name == NULL || prot == NULL)
		return (NULL);

	if (strlen(name) + strlen(prot) > XICFG_STRANS_MAXKEYLEN)
		return (NULL);

	strcpy(strans_key, name);
	strcat(strans_key, prot);

	rbt_str_get(xiconf->ttree, strans_key, (void *)&strans);

	return (strans);
}

static int xiconf_dump_cb(struct rbt_str_node *node, void *user)
{
	xiconf_strans_t *res = (xiconf_strans_t *)user;

	assume_d(res->cnt > 0, -1);

	res->srv[res->cnt - 1] = (xiconf_service_t *)node->data;
	--res->cnt;

	return (0);
}

xiconf_strans_t *xiconf_dump(xiconf_t *xiconf)
{
	xiconf_strans_t *res;

	assume_d(xiconf != NULL, NULL);

	res = oscap_talloc(xiconf_strans_t);
	res->cnt = rbt_str_size(xiconf->stree);
	res->srv = oscap_alloc(sizeof(xiconf_service_t *) * res->cnt);

	rbt_str_walk_inorder2(xiconf->stree, xiconf_dump_cb, (void *)res, 0);

	res->cnt = rbt_str_size(xiconf->stree);

	return (res);
}

void xiconf_strans_free(xiconf_strans_t *strans)
{
        if (strans == NULL)
                return;

        oscap_free(strans->srv);
        oscap_free(strans);
        return;
}

int op_assign_bool(void *var, char *val)
{
	assume_d(var != NULL, -1);

	if (strcmp(val, "yes") == 0) {
		*((bool *)(var)) = true;
	} else if (strcmp(val, "no") == 0) {
		*((bool *)(var)) = false;
	} else {
		char *endptr = NULL;
		*((bool *)(var)) = (bool) strtol (val, &endptr, 2);
		if (errno == EINVAL || errno == ERANGE) {
			return -1;
		}
		if (endptr != NULL) {
			if (*endptr != '\0' || endptr == val) {
				return -1;
			}
		}
	}
	return 0;
}

int op_assign_u16(void *var, char *val)
{
	long num = strtol(val, NULL, 10);

	if (num > 0 && num < (1<<16)) {
		*(uint16_t *)(var) = (uint16_t)(num);
		return (0);
	}

	return (-1);
}

int op_merge_u16(void *dst, void *src, int type)
{
	uint16_t *a = (uint16_t *)dst;
	uint16_t *b = (uint16_t *)src;

	if (*a != 0)
		return (-1);
	else
		*a = *b;

	return (0);
}

int op_assign_str(void *var, char *val)
{
	assume_d(var != NULL, -1);

	/* skip whitespaces */
	while(isspace(*val)) ++val;

	if (*val != '\0') {
		*((char **)(var)) = strdup(val);
		return (0);
	} else
		return (-1);
}

int op_merge_str(void *dst, void *src, int type)
{
	char **a = (char **)dst;
	char **b = (char **)src;

	if (*a != NULL) {
		dE("Cannot merge str value: dst=%p (%s), src=%p (%s)", dst, *a, src, *b);
		return (-1);
	} else
		*a = *b;

	return (0);
}

int op_assign_strl(void *var, char *val)
{
	char ***aptr = (char ***)var;
	char **string_array = *aptr;
	char *tok, *str;
	size_t string_array_size = 0;

	if (string_array != NULL) {
		// Destroy previous array state
		while(string_array[string_array_size]) {
			oscap_free(string_array[string_array_size]);
			++string_array_size;
		}
		oscap_free(string_array);
		string_array = NULL;
		string_array_size = 0;
	}
	str = val;
	while ((tok = strsep(&str, " ")) != NULL) {
		while(isspace(*tok)) {
			++tok;
		}
		if (*tok == '\0') {
			continue;
		}
		dI("Adding new member to string array: %s", tok);
		string_array = oscap_realloc(string_array, sizeof(char *) * (++string_array_size + 1));
		string_array[string_array_size-1] = strdup(tok);
		string_array[string_array_size] = NULL;
	}
	*aptr = string_array;
	return 0;
}

int op_insert_strl(void *var, char *val)
{
	char ***aptr = (char ***)var;
	char **string_array = *aptr;
	char *tok, *str;
	size_t string_array_size = 0;

	if (string_array != NULL) {
		// Count the number of items in the array
		while(string_array[string_array_size]) {
			++string_array_size;
		}
		dI("String array has %zu members", string_array_size);
	}
	str = val;
	while ((tok = strsep(&str, " ")) != NULL) {
		while(isspace(*tok)) {
			++tok;
		}
		if (*tok == '\0') {
			continue;
		}
		dI("Adding new member to string array: %s", tok);
		string_array = oscap_realloc(string_array, sizeof(char *) * (++string_array_size + 1));
		string_array[string_array_size-1] = strdup(tok);
		string_array[string_array_size] = NULL;
	}
	*aptr = string_array;
	return 0;
}

int op_remove_strl(void *var, char *val)
{
	char ***aptr = (char ***)var;
	char **string_array = *aptr, **valstr_array;
	char **newstr_array;
	char *tok, *str;
	size_t string_array_size = 0, valstr_array_size;
	size_t string_array_pos, valstr_array_pos;
	size_t newstr_array_size;

	if (string_array != NULL) {
		// Count the number of items in the array
		while(string_array[string_array_size]) {
			++string_array_size;
		}
		dI("String array has %zu members", string_array_size);
	}

	if (string_array_size < 1) {
		// Nothing to remove here
		return 0;
	} else {
		// Allocate the new string array
		newstr_array = oscap_alloc(sizeof(char *) * (string_array_size + 1));
	}

	// Create an array of strings to be removed from the array
	valstr_array = NULL;
	valstr_array_size = 0;
	str = val;
	while ((tok = strsep(&str, " ")) != NULL) {
		while(isspace(*tok)) {
			++tok;
		}
		if (*tok == '\0') {
			continue;
		}
		dI("Adding new member to string array: %s", tok);
		valstr_array = oscap_realloc(valstr_array, sizeof(char *) * (++valstr_array_size + 1));
		valstr_array[valstr_array_size-1] = tok;
		valstr_array[valstr_array_size] = NULL;
	}

	// Remove the insersection from the string array
	newstr_array_size = 0;
	for (string_array_pos = 0; string_array_pos < string_array_size; ++string_array_pos) {
		char *string_array_val = string_array[string_array_pos];

		for (valstr_array_pos = 0; valstr_array[valstr_array_pos]; ++valstr_array_pos) {
			char *delete_val = valstr_array[valstr_array_pos];
			dI("Removing: %s", delete_val);
			// Destroy the string if it matches a string from the value string array
			// Otherwise move it to the new string array
			dI("cmp: %s ?= %s", string_array_val, delete_val);
			if (strcmp(string_array_val, delete_val) == 0) {
				oscap_free(string_array_val);
				string_array_val = NULL;
				break;
			}
		}
		// If the value wasn't removed, move it to the new string array
		if (string_array_val != NULL) {
			newstr_array[newstr_array_size] = string_array_val;
			++newstr_array_size;
		}
		string_array[string_array_pos] = NULL;
	}

	newstr_array[newstr_array_size] = NULL;
	oscap_free(string_array);
	oscap_free(valstr_array);
	newstr_array = oscap_realloc(newstr_array, sizeof(char*) * (newstr_array_size + 1));
	*aptr = newstr_array;
	return 0;
}

int op_assign_disabled(void *var, char *val)
{
	xiconf_t         *xiconf;
	xiconf_service_t *srv;
	char             *tok, *str;

	xiconf = (xiconf_t *)var;
	str    = val;
	srv    = NULL;

	while ((tok = strsep (&str, " ")) != NULL) {
		while (isspace(*tok))
			++tok;
		if (*tok == '\0')
			continue;

		rbt_str_get(xiconf->stree, tok, (void *)&srv);

		if (srv == NULL) {
			srv = xiconf_service_new();
			srv->id = strdup (tok);
			srv->def_disabled = 1;

			dI("new: def_disabled: = 1: %s", srv->id);

			if (rbt_str_add (xiconf->stree, srv->id, srv) != 0) {
				dE("Can't add service (%s) into the service tree (%p)",
				   srv->id, xiconf->stree);

				xiconf_service_free(srv);
				return (-1);
			}
		} else {
			dI("mod: def_disabled: %u -> 1: %s", srv->def_disabled, srv->id);
			srv->def_disabled = 1;
		}
	}

	return (0);
}

int op_assign_enabled(void *var, char *val)
{
	xiconf_t         *xiconf;
	xiconf_service_t *srv;
	char             *tok, *str;

	xiconf = (xiconf_t *)var;
	str    = val;
	srv    = NULL;

	while ((tok = strsep (&str, " ")) != NULL) {
		while (isspace(*tok))
			++tok;
		if (*tok == '\0')
			continue;

		rbt_str_get(xiconf->stree, tok, (void *)&srv);

		if (srv == NULL) {
			srv = xiconf_service_new();
			srv->id = strdup (tok);
			srv->def_enabled = 1;

			dI("new: def_enabled: = 1: %s", srv->id);

			if (rbt_str_add (xiconf->stree, srv->id, srv) != 0) {
				dE("Can't add service (%s) into the service tree (%p)",
				   srv->id, xiconf->stree);

				xiconf_service_free(srv);
				return (-1);
			}
		} else {
			dI("mod: def_enabled: %u -> 1: %s", srv->def_disabled, srv->id);
			srv->def_enabled = 1;
		}
	}

	return (0);
}

/*
 * xinetd probe
 */

#ifndef XINETD_CONFPATH
#define XINETD_CONFPATH "/etc/xinetd.conf"
#endif

#ifndef XINETD_CONFDEPTH
#define XINETD_CONFDEPTH 32
#endif

#ifndef XINETD_TEST
static void xiservice_process_query(probe_ctx *ctx, SEXP_t *service_name, SEXP_t *protocol, const xiconf_service_t *xsrv)
{
	SEXP_t *xres_service_name, *xres_protocol, *item;

	xres_service_name = SEXP_string_new(xsrv->name, strlen(xsrv->name));
	xres_protocol = SEXP_string_new(xsrv->protocol, strlen(xsrv->protocol));
	if (probe_entobj_cmp(service_name, xres_service_name) == OVAL_RESULT_TRUE &&
	    probe_entobj_cmp(protocol, xres_protocol) == OVAL_RESULT_TRUE
		) {
		item = probe_item_create(OVAL_UNIX_XINETD, NULL,
					 "protocol",         OVAL_DATATYPE_STRING,  xsrv->protocol,
					 "service_name",     OVAL_DATATYPE_STRING,  xsrv->name,
					 "flags",            OVAL_DATATYPE_STRING_M, xsrv->flags,
					 "no_access",        OVAL_DATATYPE_STRING_M, xsrv->no_access,
					 "only_from",        OVAL_DATATYPE_STRING_M, xsrv->only_from,
					 "port",             OVAL_DATATYPE_INTEGER, (int64_t)xsrv->port,
					 "server",           OVAL_DATATYPE_STRING,  xsrv->server,
					 "server_arguments", OVAL_DATATYPE_STRING,  xsrv->server_args,
					 "socket_type",      OVAL_DATATYPE_STRING,  xsrv->socket_type,
					 "type",             OVAL_DATATYPE_STRING,  xsrv->type,
					 "user",             OVAL_DATATYPE_STRING,  xsrv->user,
					 "wait",             OVAL_DATATYPE_BOOLEAN, xsrv->wait,
					 "disabled",         OVAL_DATATYPE_BOOLEAN, xsrv->disable,
					 NULL);

		probe_item_collect(ctx, item);
	}
	SEXP_free(xres_service_name);
	SEXP_free(xres_protocol);
}

void *probe_init(void)
{
	probe_setoption(PROBEOPT_OFFLINE_MODE_SUPPORTED, PROBE_OFFLINE_CHROOT);
	return xiconf_parse(XINETD_CONFPATH, XINETD_CONFDEPTH);
}

void probe_fini(void *arg)
{
	if (arg != NULL)
		xiconf_free(arg);
}

int probe_main(probe_ctx *ctx, void *arg)
{
	SEXP_t *service_name, *protocol, *eval, *object;
	char    srv_name[256];
	char    srv_prot[256];
	int     err;

	xiconf_service_t *xsrv;
	xiconf_strans_t  *xres;
	xiconf_t         *xcfg = (xiconf_t *)arg;

	if (arg == NULL) {
		probe_cobj_set_flag(probe_ctx_getresult(ctx), SYSCHAR_FLAG_NOT_APPLICABLE);
		return (0);
	}

        object = probe_ctx_getobject(ctx);

	service_name = probe_obj_getent(object, "service_name", 1);

	if (service_name == NULL) {
		err = PROBE_ENOVAL;
		goto fail;
	}

	eval = probe_ent_getval(service_name);

	if (SEXP_string_cstr_r (eval, srv_name, sizeof srv_name) == (size_t)-1) {
		SEXP_free (service_name);
		SEXP_free (eval);
		err = PROBE_ERANGE;
		goto fail;
	}

	SEXP_free (eval);

	protocol = probe_obj_getent(object, "protocol", 1);

	if (protocol == NULL) {
		SEXP_free (service_name);
		err = PROBE_ENOVAL;
		goto fail;
	}

	eval = probe_ent_getval(protocol);

	if (SEXP_string_cstr_r (eval, srv_prot, sizeof srv_prot) == (size_t)-1) {
		SEXP_free (service_name);
		SEXP_free (protocol);
		SEXP_free (eval);
		err = PROBE_ERANGE;
		goto fail;
	}

	SEXP_free (eval);

	dI("Updating xinetd configuration cache");

	if (xiconf_update(arg) != 0) {
		err = PROBE_EUNKNOWN;
		goto fail;
	}

	xres = xiconf_dump(xcfg);

	if (xres != NULL) {
		register unsigned int l;

		for (l = 0; l < xres->cnt; ++l) {
			xsrv = xres->srv[l];
			while (xsrv != NULL) {
				xiservice_process_query(ctx, service_name, protocol, xsrv);
				xsrv = xsrv->next;
			}
		}
		oscap_free(xres->srv);
		oscap_free(xres);

	}
	SEXP_vfree(service_name, protocol, NULL);

	return (0);
 fail:
	probe_cobj_set_flag(probe_ctx_getresult(ctx), SYSCHAR_FLAG_ERROR);
	return err;
}
#endif
