path: root/modules/generators/mod_cgi.c

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

/*
 * http_script: keeps all script-related ramblings together.
 * 
 * Compliant to CGI/1.1 spec
 * 
 * Adapted by rst from original NCSA code by Rob McCool
 *
 * Apache adds some new env vars; REDIRECT_URL and REDIRECT_QUERY_STRING for
 * custom error responses, and DOCUMENT_ROOT because we found it useful.
 * It also adds SERVER_ADMIN - useful for scripts to know who to mail when 
 * they fail.
 */

#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_main.h"
#include "http_log.h"
#include "util_script.h"
#include "http_conf_globals.h"
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif

module MODULE_VAR_EXPORT cgi_module;

/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
 * in ScriptAliased directories, which means we need to know if this
 * request came through ScriptAlias or not... so the Alias module
 * leaves a note for us.
 */

static int is_scriptaliased(request_rec *r)
{
    const char *t = ap_table_get(r->notes, "alias-forced-type");
    return t && (!strcasecmp(t, "cgi-script"));
}

/* Configuration stuff */

#define DEFAULT_LOGBYTES 10385760
#define DEFAULT_BUFBYTES 1024

typedef struct {
    char *logname;
    long logbytes;
    int bufbytes;
} cgi_server_conf;

static void *create_cgi_config(ap_context_t *p, server_rec *s)
{
    cgi_server_conf *c =
    (cgi_server_conf *) ap_pcalloc(p, sizeof(cgi_server_conf));

    c->logname = NULL;
    c->logbytes = DEFAULT_LOGBYTES;
    c->bufbytes = DEFAULT_BUFBYTES;

    return c;
}

static void *merge_cgi_config(ap_context_t *p, void *basev, void *overridesv)
{
    cgi_server_conf *base = (cgi_server_conf *) basev, *overrides = (cgi_server_conf *) overridesv;

    return overrides->logname ? overrides : base;
}

static const char *set_scriptlog(cmd_parms *cmd, void *dummy, char *arg)
{
    server_rec *s = cmd->server;
    cgi_server_conf *conf =
    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);

    conf->logname = arg;
    return NULL;
}

static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy, char *arg)
{
    server_rec *s = cmd->server;
    cgi_server_conf *conf =
    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);

    conf->logbytes = atol(arg);
    return NULL;
}

static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy, char *arg)
{
    server_rec *s = cmd->server;
    cgi_server_conf *conf =
    (cgi_server_conf *) ap_get_module_config(s->module_config, &cgi_module);

    conf->bufbytes = atoi(arg);
    return NULL;
}

static const command_rec cgi_cmds[] =
{
    {"ScriptLog", set_scriptlog, NULL, RSRC_CONF, TAKE1,
     "the name of a log for script debugging info"},
    {"ScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, TAKE1,
     "the maximum length (in bytes) of the script debug log"},
    {"ScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, TAKE1,
     "the maximum size (in bytes) to record of a POST request"},
    {NULL}
};

static int log_scripterror(request_rec *r, cgi_server_conf * conf, int ret,
			   int show_errno, char *error)
{
    ap_file_t *f = NULL;
    struct stat finfo;
    char time_str[AP_CTIME_LEN];

    ap_log_rerror(APLOG_MARK, show_errno|APLOG_ERR, errno, r, 
		"%s: %s", error, r->filename);

    if (!conf->logname ||
	((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
	 &&   (finfo.st_size > conf->logbytes)) ||
          (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
                   APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
	return ret;
    }

    /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
    ap_ctime(time_str, ap_now());
    ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
	    r->args ? "?" : "", r->args ? r->args : "", r->protocol);
    /* "%% 500 /usr/local/apache/cgi-bin */
    ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);

    ap_fprintf(f, "%%error\n%s\n", error);

    ap_close(f);
    return ret;
}

static int log_script(request_rec *r, cgi_server_conf * conf, int ret,
		  char *dbuf, const char *sbuf, BUFF *script_in, BUFF *script_err)
{
    ap_array_header_t *hdrs_arr = ap_table_elts(r->headers_in);
    ap_table_entry_t *hdrs = (ap_table_entry_t *) hdrs_arr->elts;
    char argsbuffer[HUGE_STRING_LEN];
    ap_file_t *f = NULL;
    int i;
    struct stat finfo;
    char time_str[AP_CTIME_LEN];

    if (!conf->logname ||
	((stat(ap_server_root_relative(r->pool, conf->logname), &finfo) == 0)
	 &&   (finfo.st_size > conf->logbytes)) ||
         (ap_open(&f, ap_server_root_relative(r->pool, conf->logname),
                  APR_APPEND, APR_OS_DEFAULT, r->pool) != APR_SUCCESS)) {
	/* Soak up script output */
	while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
	    continue;
#ifdef WIN32
        /* Soak up stderr and redirect it to the error log.
         * Script output to stderr is already directed to the error log
         * on Unix, thanks to the magic of fork().
         */
        while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
            ap_log_rerror(APLOG_MARK, APLOG_ERR | APLOG_NOERRNO, 0, r, 
                          "%s", argsbuffer);            
        }
#else
	while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
	    continue;
#endif
	return ret;
    }

    /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
    ap_ctime(time_str, ap_now());
    ap_fprintf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
	    r->args ? "?" : "", r->args ? r->args : "", r->protocol);
    /* "%% 500 /usr/local/apache/cgi-bin" */
    ap_fprintf(f, "%%%% %d %s\n", ret, r->filename);

    ap_puts("%request\n", f);
    for (i = 0; i < hdrs_arr->nelts; ++i) {
	if (!hdrs[i].key)
	    continue;
	ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
    }
    if ((r->method_number == M_POST || r->method_number == M_PUT)
	&& *dbuf) {
	ap_fprintf(f, "\n%s\n", dbuf);
    }

    ap_puts("%response\n", f);
    hdrs_arr = ap_table_elts(r->err_headers_out);
    hdrs = (ap_table_entry_t *) hdrs_arr->elts;

    for (i = 0; i < hdrs_arr->nelts; ++i) {
	if (!hdrs[i].key)
	    continue;
	ap_fprintf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
    }

    if (sbuf && *sbuf)
	ap_fprintf(f, "%s\n", sbuf);

    if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
	ap_puts("%stdout\n", f);
	ap_puts(argsbuffer, f);
	while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0)
	    ap_puts(argsbuffer, f);
	ap_puts("\n", f);
    }

    if (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
	ap_puts("%stderr\n", f);
	ap_puts(argsbuffer, f);
	while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0)
	    ap_puts(argsbuffer, f);
	ap_puts("\n", f);
    }

    ap_bclose(script_in);
    ap_bclose(script_err);

    ap_close(f);
    return ret;
}
static ap_status_t run_cgi_child(BUFF **script_out, BUFF **script_in, BUFF **script_err, 
                                 char *command, char *const argv[], request_rec *r, ap_context_t *p)
{
    char **env;
    ap_procattr_t *procattr;
    ap_proc_t *procnew;
    ap_status_t rc = APR_SUCCESS;
    ap_file_t *file = NULL;
    ap_iol *iol;

#ifdef DEBUG_CGI
#ifdef OS2
    /* Under OS/2 need to use device con. */
    FILE *dbg = fopen("con", "w");
#else
    FILE *dbg = fopen("/dev/tty", "w");
#endif
    int i;
#endif

    ap_block_alarms();

    RAISE_SIGSTOP(CGI_CHILD);
#ifdef DEBUG_CGI
    fprintf(dbg, "Attempting to exec %s as %sCGI child (argv0 = %s)\n",
	    r->filename, cld->nph ? "NPH " : "", argv0);
#endif

    ap_add_cgi_vars(r);
    env = ap_create_environment(p, r->subprocess_env);

#ifdef DEBUG_CGI
    fprintf(dbg, "Environment: \n");
    for (i = 0; env[i]; ++i)
	fprintf(dbg, "'%s'\n", env[i]);
#endif

    /* Transumute ourselves into the script.
     * NB only ISINDEX scripts get decoded arguments.
     */
    if (((rc = ap_createprocattr_init(&procattr, p)) != APR_SUCCESS) ||
        ((rc = ap_setprocattr_io(procattr, 
                                 APR_CHILD_BLOCK, 
                                 APR_CHILD_BLOCK,
                                 APR_CHILD_BLOCK)) != APR_SUCCESS) ||
        ((rc = ap_setprocattr_dir(procattr, 
                                  ap_make_dirstr_parent(r->pool, r->filename))) != APR_SUCCESS) ||
        ((rc = ap_setprocattr_cmdtype(procattr, APR_PROGRAM)) != APR_SUCCESS)) {
        /* Something bad happened, tell the world. */
	ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
		      "couldn't create child process: %s", r->filename);
    }
    else {
        rc = ap_create_process(&procnew, command, argv, env, procattr, p);
    
        if (rc != APR_SUCCESS) {
            /* Bad things happened. Everyone should have cleaned up. */
            ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
                        "couldn't create child process: %d: %s", rc, r->filename);
        }
        else {
            ap_note_subprocess(p, procnew, kill_after_timeout);

            /* Fill in BUFF structure for parents pipe to child's stdout */
            ap_get_childout(&file, procnew);
            iol = ap_create_file_iol(file);
            if (!iol)
                return APR_EBADF;
            *script_in = ap_bcreate(p, B_RD);
            ap_bpush_iol(*script_in, iol);

            /* Fill in BUFF structure for parents pipe to child's stdin */
            ap_get_childin(&file, procnew);
            iol = ap_create_file_iol(file);
            if (!iol)
                return APR_EBADF;
            *script_out = ap_bcreate(p, B_WR);
            ap_bpush_iol(*script_out, iol);

            /* Fill in BUFF structure for parents pipe to child's stderr */
            ap_get_childerr(&file, procnew);
            iol = ap_create_file_iol(file);
            if (!iol)
                return APR_EBADF;
            *script_err = ap_bcreate(p, B_RD);
            ap_bpush_iol(*script_err, iol);
        }
    }
    ap_unblock_alarms();
    return (rc);
}
static ap_status_t build_argv_list(char ***argv, request_rec *r, ap_context_t *p)
{
    int numwords, x, idx;
    char *w;
    const char *args = r->args;

    if (!args || !args[0] || strchr(args, '=')) {
        numwords = 1;
    }
    else {
        /* count the number of keywords */
        for (x = 0, numwords = 2; args[x]; x++) {
            if (args[x] == '+') {
                ++numwords;
            }
        }
    }
    /* Everything is - 1 to account for the first parameter which is the
     * program name.  We didn't used to have to do this, but APR wants it.
     */ 
    if (numwords > APACHE_ARG_MAX - 1) {
        numwords = APACHE_ARG_MAX - 1;	/* Truncate args to prevent overrun */
    }
    *argv = (char **) ap_palloc(p, (numwords + 2) * sizeof(char *));
 
    for (x = 1, idx = 1; x < numwords; x++) {
        w = ap_getword_nulls(p, &args, '+');
        ap_unescape_url(w);
        (*argv)[idx++] = ap_escape_shell_cmd(p, w);
    }
    (*argv)[idx] = NULL;

    return APR_SUCCESS;
}

static ap_status_t build_command_line(char **c, request_rec *r, ap_context_t *p)
{
#ifdef WIN32
    char *quoted_filename = NULL;
    char *interpreter = NULL;
    file_type_e fileType;

    *c = NULL;
    fileType = ap_get_win32_interpreter(r, &interpreter);

    if (fileType == eFileTypeUNKNOWN) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r,
                      "%s is not executable; ensure interpreted scripts have "
                      "\"#!\" first line", 
                      r->filename);
        return APR_EBADF;
    }

    /*
     * Build the command string to pass to ap_create_process()
     */
    quoted_filename = ap_pstrcat(p, "\"", r->filename, "\"", NULL);
    if (interpreter && *interpreter) {
        *c = ap_pstrcat(p, interpreter, " ", quoted_filename, " ", NULL);
    }
    else {
        *c = ap_pstrcat(p, quoted_filename, " ", NULL);
    }
#else
    *c = ap_pstrcat(p, r->filename, NULL);
#endif
    return APR_SUCCESS;
}

static int cgi_handler(request_rec *r)
{
    int retval, nph, dbpos = 0;
    char *argv0, *dbuf = NULL;
    char *command;
    char **argv = NULL;

    BUFF *script_out = NULL, *script_in = NULL, *script_err = NULL;
    char argsbuffer[HUGE_STRING_LEN];
    int is_included = !strcmp(r->protocol, "INCLUDED");
    void *sconf = r->server->module_config;
    ap_context_t *p;
    cgi_server_conf *conf =
    (cgi_server_conf *) ap_get_module_config(sconf, &cgi_module);

    p = r->main ? r->main->pool : r->pool;

    if (r->method_number == M_OPTIONS) {
	/* 99 out of 100 CGI scripts, this is all they support */
	r->allowed |= (1 << M_GET);
	r->allowed |= (1 << M_POST);
	return DECLINED;
    }

    if ((argv0 = strrchr(r->filename, '/')) != NULL)
	argv0++;
    else
	argv0 = r->filename;

    nph = !(strncmp(argv0, "nph-", 4));

    if (!(ap_allow_options(r) & OPT_EXECCGI) && !is_scriptaliased(r))
        return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                               "Options ExecCGI is off in this directory");
    if (nph && is_included)
        return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
                               "attempt to include NPH CGI script");

#if defined(OS2) || defined(WIN32)
    /* Allow for cgi files without the .EXE extension on them under OS/2 */
    if (r->finfo.protection == 0) {
        struct stat statbuf;
        char *newfile;

        newfile = ap_pstrcat(r->pool, r->filename, ".EXE", NULL);

        if ((stat(newfile, &statbuf) != 0) || (!S_ISREG(statbuf.st_mode))) {
            return log_scripterror(r, conf, NOT_FOUND, 0,
                                   "script not found or unable to stat");
        } else {
            r->filename = newfile;
        }
    }
#else
    if (r->finfo.protection == 0)
	return log_scripterror(r, conf, NOT_FOUND, APLOG_NOERRNO,
			       "script not found or unable to stat");
#endif
    if (r->finfo.filetype == APR_DIR)
	return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
			       "attempt to invoke directory as script");

/*
    if (!ap_suexec_enabled) {
	if (!ap_can_exec(&r->finfo))
	    return log_scripterror(r, conf, FORBIDDEN, APLOG_NOERRNO,
				   "file permissions deny server execution");
    }

*/
    if ((retval = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)))
	return retval;

    ap_add_common_vars(r);

    /* build the command line */
    if (build_command_line(&command, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }
    /* build the argument list */
    else if (build_argv_list(&argv, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }
    argv[0] = ap_pstrdup(p, command);
    /* run the script in its own process */
    if (run_cgi_child(&script_out, &script_in, &script_err, command, argv, r, p) != APR_SUCCESS) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, errno, r,
                      "couldn't spawn child process: %s", r->filename);
        return HTTP_INTERNAL_SERVER_ERROR;
    }

    /* Transfer any put/post args, CERN style...
     * Note that we already ignore SIGPIPE in the core server.
     */
    if (ap_should_client_block(r)) {
	int dbsize, len_read;
        ap_ssize_t bytes_written;

	if (conf->logname) {
	    dbuf = ap_pcalloc(r->pool, conf->bufbytes + 1);
	    dbpos = 0;
	}

	while ((len_read =
		ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN)) > 0) {
	    if (conf->logname) {
		if ((dbpos + len_read) > conf->bufbytes) {
		    dbsize = conf->bufbytes - dbpos;
		}
		else {
		    dbsize = len_read;
		}
		memcpy(dbuf + dbpos, argsbuffer, dbsize);
		dbpos += dbsize;
	    }
            (void) ap_bwrite(script_out, argsbuffer, len_read, &bytes_written);
	    if (bytes_written < len_read) {
		/* silly script stopped reading, soak up remaining message */
		while (ap_get_client_block(r, argsbuffer, HUGE_STRING_LEN) > 0) {
		    /* dump it */
		}
		break;
	    }
	}
	ap_bflush(script_out);
    }

    ap_bclose(script_out);

    /* Handle script return... */
    if (script_in && !nph) {
	const char *location;
	char sbuf[MAX_STRING_LEN];
	int ret;

	if ((ret = ap_scan_script_header_err_buff(r, script_in, sbuf))) {
	    return log_script(r, conf, ret, dbuf, sbuf, script_in, script_err);
	}

#ifdef CHARSET_EBCDIC
        /* Now check the Content-Type to decide if conversion is needed */
        ap_checkconv(r);
#endif /*CHARSET_EBCDIC*/

	location = ap_table_get(r->headers_out, "Location");

	if (location && location[0] == '/' && r->status == 200) {

	    /* Soak up all the script output */
	    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_in) > 0) {
		continue;
	    }
	    while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
		continue;
	    }
	    /* This redirect needs to be a GET no matter what the original
	     * method was.
	     */
	    r->method = ap_pstrdup(r->pool, "GET");
	    r->method_number = M_GET;

	    /* We already read the message body (if any), so don't allow
	     * the redirected request to think it has one.  We can ignore 
	     * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
	     */
	    ap_table_unset(r->headers_in, "Content-Length");

	    ap_internal_redirect_handler(location, r);
	    return OK;
	}
	else if (location && r->status == 200) {
	    /* XX Note that if a script wants to produce its own Redirect
	     * body, it now has to explicitly *say* "Status: 302"
	     */
	    return REDIRECT;
	}

	ap_send_http_header(r);
	if (!r->header_only) {
	    ap_send_fb(script_in, r);
	}
	ap_bclose(script_in);

	while (ap_bgets(argsbuffer, HUGE_STRING_LEN, script_err) > 0) {
	    continue;
	}
	ap_bclose(script_err);
    }

    if (script_in && nph) {
	ap_send_fb(script_in, r);
    }

    return OK;			/* NOT r->status, even if it has changed. */
}

static const handler_rec cgi_handlers[] =
{
    {CGI_MAGIC_TYPE, cgi_handler},
    {"cgi-script", cgi_handler},
    {NULL}
};

module MODULE_VAR_EXPORT cgi_module =
{
    STANDARD20_MODULE_STUFF,
    NULL,			/* dir config creater */
    NULL,			/* dir merger --- default is to override */
    create_cgi_config,		/* server config */
    merge_cgi_config,		/* merge server config */
    cgi_cmds,			/* command ap_table_t */
    cgi_handlers,		/* handlers */
    NULL			/* register hooks */
};