modules/generators/mod_status.c

	mod_status.c revision 3568de757bac0b47256647504c186d17ca272f85
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz/* ====================================================================
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * The Apache Software License, Version 1.1
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * Copyright (c) 2000 The Apache Software Foundation.  All rights
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * reserved.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * Redistribution and use in source and binary forms, with or without
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * modification, are permitted provided that the following conditions
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * are met:
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 1. Redistributions of source code must retain the above copyright
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    notice, this list of conditions and the following disclaimer.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 2. Redistributions in binary form must reproduce the above copyright
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    notice, this list of conditions and the following disclaimer in
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    the documentation and/or other materials provided with the
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    distribution.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 3. The end-user documentation included with the redistribution,
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    if any, must include the following acknowledgment:
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *       "This product includes software developed by the
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *        Apache Software Foundation (http://www.apache.org/)."
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    Alternately, this acknowledgment may appear in the software itself,
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    if and wherever such third-party acknowledgments normally appear.
ee3bb87ab2da52ee1ad0c6675ea8b699b0af9ddcEwaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 4. The names "Apache" and "Apache Software Foundation" must
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    not be used to endorse or promote products derived from this
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    software without prior written permission. For written
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    permission, please contact apache@apache.org.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 5. Products derived from this software may not be called "Apache",
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    nor may "Apache" appear in their name, without prior written
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *    permission of the Apache Software Foundation.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * SUCH DAMAGE.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * ====================================================================
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * This software consists of voluntary contributions made by many
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * individuals on behalf of the Apache Software Foundation.  For more
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * information on the Apache Software Foundation, please see
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * <http://www.apache.org/>.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * Portions of this software are based upon public domain software
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * originally written at the National Center for Supercomputing Applications,
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * University of Illinois, Urbana-Champaign.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz */
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz/* Status Module.  Display lots of internal data about how Apache is
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * performing and the state of all children processes.
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * To enable this, add the following lines into any config file:
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * <Location /server-status>
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * SetHandler server-status
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * </Location>
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * You may want to protect this location by password or domain so no one
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * else can look at it.  Then you can access the statistics with a URL like:
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * http://your_server_name/server-status
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * /server-status - Returns page using tables
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * /server-status?notable - Returns page for browsers without table support
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * /server-status?refresh - Returns page with 1 second refresh
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * /server-status?refresh=6 - Returns page with refresh every 6 seconds
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * /server-status?auto - Returns page with data for automatic parsing
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * Mark Cox, mark@ukweb.com, November 1995
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 12.11.95 Initial version for www.telescope.org
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 13.3.96  Updated to remove rprintf's [Mark]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 18.3.96  Added CPU usage, process information, and tidied [Ben Laurie]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 18.3.96  Make extra Scoreboard variables #definable
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 25.3.96  Make short report have full precision [Ben Laurie suggested]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 25.3.96  Show uptime better [Mark/Ben Laurie]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 29.3.96  Better HTML and explanation [Mark/Rob Hartill suggested]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 09.4.96  Added message for non-STATUS compiled version
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 18.4.96  Added per child and per slot counters [Jim Jagielski]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 01.5.96  Table format, cleanup, even more spiffy data [Chuck Murcko/Jim J.]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 18.5.96  Adapted to use new rprintf() routine, incidentally fixing a missing
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *          piece in short reports [Ben Laurie]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 21.5.96  Additional Status codes (DNS and LOGGING only enabled if
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz *          extended STATUS is enabled) [George Burgyan/Jim J.]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz * 10.8.98  Allow for extended status info at runtime (no more STATUS)
76408af596b604997cabe1ebde1caaa43f58b1e6Ewaryst Schulz *          [Jim J.]
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz */
76408af596b604997cabe1ebde1caaa43f58b1e6Ewaryst Schulz
76408af596b604997cabe1ebde1caaa43f58b1e6Ewaryst Schulz#define CORE_PRIVATE
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "httpd.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "http_config.h"
76408af596b604997cabe1ebde1caaa43f58b1e6Ewaryst Schulz#include "http_core.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "http_protocol.h"
76408af596b604997cabe1ebde1caaa43f58b1e6Ewaryst Schulz#include "http_main.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "util_script.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include <time.h>
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "scoreboard.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include "http_log.h"
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#ifdef NEXT
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#if (NX_CURRENT_COMPILER_RELEASE == 410)
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#ifdef m68k
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#define HZ 64
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#else
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#define HZ 100
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#endif
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#else
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#include <machine/param.h>
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#endif
7af4df794a0e0f0cb927bd9371556ad098308983Ewaryst Schulz#endif /* NEXT */

#define STATUS_MAXLINE      64

#define KBYTE           1024
#define MBYTE           1048576L
#define GBYTE           1073741824L

#ifndef DEFAULT_TIME_FORMAT
#define DEFAULT_TIME_FORMAT "%A, %d-%b-%Y %H:%M:%S %Z"
#endif

#define STATUS_MAGIC_TYPE "application/x-httpd-status"

module AP_MODULE_DECLARE_DATA status_module;

/*
 *command-related code. This is here to prevent use of ExtendedStatus
 * without status_module included.
 */
static const char *set_extended_status(cmd_parms *cmd, void *dummy, int arg)
{
    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
    if (err != NULL) {
        return err;
    }
    ap_extended_status = arg;
    return NULL;
}

static const command_rec status_module_cmds[] =
{
    AP_INIT_FLAG("ExtendedStatus", set_extended_status, NULL, RSRC_CONF,
      "\"On\" to enable extended status information, \"Off\" to disable"),
    {NULL}
};

/* Format the number of bytes nicely */
static void format_byte_out(request_rec *r, unsigned long bytes)
{
    if (bytes < (5 * KBYTE))
    ap_rprintf(r, "%d B", (int) bytes);
    else if (bytes < (MBYTE / 2))
    ap_rprintf(r, "%.1f kB", (float) bytes / KBYTE);
    else if (bytes < (GBYTE / 2))
    ap_rprintf(r, "%.1f MB", (float) bytes / MBYTE);
    else
    ap_rprintf(r, "%.1f GB", (float) bytes / GBYTE);
}

static void format_kbyte_out(request_rec *r, unsigned long kbytes)
{
    if (kbytes < KBYTE)
    ap_rprintf(r, "%d kB", (int) kbytes);
    else if (kbytes < MBYTE)
    ap_rprintf(r, "%.1f MB", (float) kbytes / KBYTE);
    else
    ap_rprintf(r, "%.1f GB", (float) kbytes / MBYTE);
}

static void show_time(request_rec *r, time_t tsecs)
{
    long days, hrs, mins, secs;

    secs = tsecs % 60;
    tsecs /= 60;
    mins = tsecs % 60;
    tsecs /= 60;
    hrs = tsecs % 24;
    days = tsecs / 24;
    if (days)
    ap_rprintf(r, " %ld day%s", days, days == 1 ? "" : "s");
    if (hrs)
    ap_rprintf(r, " %ld hour%s", hrs, hrs == 1 ? "" : "s");
    if (mins)
    ap_rprintf(r, " %ld minute%s", mins, mins == 1 ? "" : "s");
    if (secs)
    ap_rprintf(r, " %ld second%s", secs, secs == 1 ? "" : "s");
}

/* Main handler for x-httpd-status requests */

/* ID values for command table */

#define STAT_OPT_END        -1
#define STAT_OPT_REFRESH    0
#define STAT_OPT_NOTABLE    1
#define STAT_OPT_AUTO       2

struct stat_opt {
    int id;
    const char *form_data_str;
    const char *hdr_out_str;
};

static const struct stat_opt status_options[] = /* see #defines above */
{
    {STAT_OPT_REFRESH, "refresh", "Refresh"},
    {STAT_OPT_NOTABLE, "notable", NULL},
    {STAT_OPT_AUTO, "auto", NULL},
    {STAT_OPT_END, NULL, NULL}
};

static char status_flags[SERVER_NUM_STATUS];

static int status_handler(request_rec *r)
{
    const char *loc;
    time_t nowtime = time(NULL);
    time_t up_time;
    int j, i, res;
    int ready = 0;
    int busy = 0;
    unsigned long count = 0;
    unsigned long lres, bytes;
    unsigned long my_lres, my_bytes, conn_bytes;
    unsigned short conn_lres;
    unsigned long bcount = 0;
    unsigned long kbcount = 0;
    long req_time;
#ifndef NO_TIMES
#ifdef _SC_CLK_TCK
    float tick = sysconf(_SC_CLK_TCK);
#else
    float tick = HZ;
#endif
#endif
    int short_report = 0;
    int no_table_report = 0;
    short_score score_record;
    parent_score ps_record;
    char stat_buffer[HARD_SERVER_LIMIT * HARD_THREAD_LIMIT];
    int pid_buffer[HARD_SERVER_LIMIT * HARD_THREAD_LIMIT];
    clock_t tu, ts, tcu, tcs;
    server_rec *vhost;

    if (strcmp(r->handler, STATUS_MAGIC_TYPE) && strcmp(r->handler, "server-status")) {
        return DECLINED;
    }

    tu = ts = tcu = tcs = 0;

    if (!ap_exists_scoreboard_image()) {
    ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
            "Server status unavailable in inetd mode");
    return HTTP_INTERNAL_SERVER_ERROR;
    }
    r->allowed = (1 << M_GET);
    if (r->method_number != M_GET)
    return DECLINED;

    r->content_type = "text/html";

    /*
     * Simple table-driven form data set parser that lets you alter the header
     */

    if (r->args) {
    i = 0;
    while (status_options[i].id != STAT_OPT_END) {
        if ((loc = ap_strstr_c(r->args, status_options[i].form_data_str)) != NULL) {
        switch (status_options[i].id) {
        case STAT_OPT_REFRESH:
            if (*(loc + strlen(status_options[i].form_data_str)) == '='
                        && atol(loc + strlen(status_options[i].form_data_str)
                                    + 1) > 0)
            apr_table_set(r->headers_out,
                  status_options[i].hdr_out_str,
                  loc + strlen(status_options[i].hdr_out_str) + 1);
            else
            apr_table_set(r->headers_out,
                  status_options[i].hdr_out_str, "1");
            break;
        case STAT_OPT_NOTABLE:
            no_table_report = 1;
            break;
        case STAT_OPT_AUTO:
            r->content_type = "text/plain";
            short_report = 1;
            break;
        }
        }
        i++;
    }
    }

    ap_send_http_header(r);

    if (r->header_only)
    return 0;

    ap_sync_scoreboard_image();
    for (i = 0; i < HARD_SERVER_LIMIT; ++i) {
        for (j = 0; j < HARD_THREAD_LIMIT; ++j) {
            int indx = (i * HARD_THREAD_LIMIT) + j;

        score_record = ap_scoreboard_image->servers[i][j];
        ps_record = ap_scoreboard_image->parent[i];
        res = score_record.status;
        stat_buffer[indx] = status_flags[res];
        pid_buffer[indx] = (int) ps_record.pid;
        if (res == SERVER_READY)
            ready++;
        else if (res != SERVER_DEAD)
            busy++;
        if (ap_extended_status) {
            lres = score_record.access_count;
            bytes = score_record.bytes_served;
            if (lres != 0 || (res != SERVER_READY && res != SERVER_DEAD)) {
#ifndef NO_TIMES
            tu += score_record.times.tms_utime;
            ts += score_record.times.tms_stime;
            tcu += score_record.times.tms_cutime;
            tcs += score_record.times.tms_cstime;
#endif /* NO_TIMES */
            count += lres;
            bcount += bytes;
            if (bcount >= KBYTE) {
                kbcount += (bcount >> 10);
                bcount = bcount & 0x3ff;
            }
            }
        }
        }
    }

    up_time = nowtime - ap_restart_time;

    if (!short_report) {
    ap_rputs(DOCTYPE_HTML_3_2
         "<HTML><HEAD>\n<TITLE>Apache Status</TITLE>\n</HEAD><BODY>\n",
         r);
    ap_rputs("<H1>Apache Server Status for ", r);
    ap_rvputs(r, ap_get_server_name(r), "</H1>\n\n", NULL);
    ap_rvputs(r, "Server Version: ",
      ap_get_server_version(), "<br>\n", NULL);
    ap_rvputs(r, "Server Built: ",
      ap_get_server_built(), "<br>\n<hr>\n", NULL);
    ap_rvputs(r, "Current Time: ",
      ap_ht_time(r->pool, nowtime, DEFAULT_TIME_FORMAT, 0), "<br>\n", NULL);
    ap_rvputs(r, "Restart Time: ",
      ap_ht_time(r->pool, ap_restart_time, DEFAULT_TIME_FORMAT, 0),
      "<br>\n", NULL);
    ap_rprintf(r, "Parent Server Generation: %d <br>\n", (int) ap_my_generation);
    ap_rputs("Server uptime: ", r);
    show_time(r, up_time);
    ap_rputs("<br>\n", r);
    }

    if (ap_extended_status) {
    if (short_report) {
        ap_rprintf(r, "Total Accesses: %lu\nTotal kBytes: %lu\n",
        count, kbcount);

#ifndef NO_TIMES
        /* Allow for OS/2 not having CPU stats */
        if (ts || tu || tcu || tcs)
        ap_rprintf(r, "CPULoad: %g\n",
            (tu + ts + tcu + tcs) / tick / up_time * 100.);
#endif

        ap_rprintf(r, "Uptime: %ld\n", (long) (up_time));
        if (up_time > 0)
        ap_rprintf(r, "ReqPerSec: %g\n",
            (float) count / (float) up_time);

        if (up_time > 0)
        ap_rprintf(r, "BytesPerSec: %g\n",
            KBYTE * (float) kbcount / (float) up_time);

        if (count > 0)
        ap_rprintf(r, "BytesPerReq: %g\n",
            KBYTE * (float) kbcount / (float) count);
    }
    else {          /* !short_report */
        ap_rprintf(r, "Total accesses: %lu - Total Traffic: ", count);
        format_kbyte_out(r, kbcount);

#ifndef NO_TIMES
        /* Allow for OS/2 not having CPU stats */
        ap_rputs("<br>\n", r);
        ap_rprintf(r, "CPU Usage: u%g s%g cu%g cs%g",
            tu / tick, ts / tick, tcu / tick, tcs / tick);

        if (ts || tu || tcu || tcs)
        ap_rprintf(r, " - %.3g%% CPU load",
            (tu + ts + tcu + tcs) / tick / up_time * 100.);
#endif

        ap_rputs("<br>\n", r);

        if (up_time > 0)
        ap_rprintf(r, "%.3g requests/sec - ",
            (float) count / (float) up_time);

        if (up_time > 0) {
        format_byte_out(r, KBYTE * (float) kbcount / (float) up_time);
        ap_rputs("/second - ", r);
        }

        if (count > 0) {
        format_byte_out(r, KBYTE * (float) kbcount / (float) count);
        ap_rputs("/request", r);
        }

        ap_rputs("<br>\n", r);
    }               /* short_report */
    }                   /* ap_extended_status */

    if (!short_report)
    ap_rprintf(r, "\n%d requests currently being processed, %d idle servers\n"
        ,busy, ready);
    else
    ap_rprintf(r, "BusyServers: %d\nIdleServers: %d\n", busy, ready);

    /* send the scoreboard 'table' out */

    if (!short_report)
    ap_rputs("<PRE>", r);
    else
    ap_rputs("Scoreboard: ", r);

    for (i = 0; i < HARD_SERVER_LIMIT; ++i) {
        for (j = 0; j < HARD_THREAD_LIMIT; ++j) {
            int indx = (i * HARD_THREAD_LIMIT) + j;
        ap_rputc(stat_buffer[indx], r);
        if ((indx % STATUS_MAXLINE == (STATUS_MAXLINE - 1)) && !short_report)
            ap_rputs("\n", r);
        }
    }

    if (short_report)
    ap_rputs("\n", r);
    else {
    ap_rputs("</PRE>\n", r);
    ap_rputs("Scoreboard Key: <br>\n", r);
    ap_rputs("\"<B><code>_</code></B>\" Waiting for Connection, \n", r);
    ap_rputs("\"<B><code>S</code></B>\" Starting up, \n", r);
    ap_rputs("\"<B><code>R</code></B>\" Reading Request,<BR>\n", r);
    ap_rputs("\"<B><code>W</code></B>\" Sending Reply, \n", r);
    ap_rputs("\"<B><code>K</code></B>\" Keepalive (read), \n", r);
    ap_rputs("\"<B><code>D</code></B>\" DNS Lookup,<BR>\n", r);
    ap_rputs("\"<B><code>L</code></B>\" Logging, \n", r);
    ap_rputs("\"<B><code>G</code></B>\" Gracefully finishing, \n", r);
    ap_rputs("\"<B><code>.</code></B>\" Open slot with no current process<P>\n", r);
    ap_rputs("<P>\n", r);
    if (!ap_extended_status) {
        int j = 0;
            int k;
        ap_rputs("PID Key: <br>\n", r);
        ap_rputs("<PRE>\n", r);
        for (i = 0; i < HARD_SERVER_LIMIT; ++i) {
                for (k = 0; k < HARD_THREAD_LIMIT; ++k) {
                    int indx = (i * HARD_THREAD_LIMIT) + j;

            if (stat_buffer[indx] != '.') {
                ap_rprintf(r, "   %d in state: %c ", pid_buffer[i],
                stat_buffer[indx]);
                if (++j >= 3) {
                    ap_rputs("\n", r);
                j = 0;
                } else
                    ap_rputs(",", r);
            }
                }
        }
        ap_rputs("\n", r);
        ap_rputs("</PRE>\n", r);
    }
    }

    if (ap_extended_status) {
    if (!short_report) {
        if (no_table_report)
        ap_rputs("<p><hr><h2>Server Details</h2>\n\n", r);
        else
#ifdef NO_TIMES
        /* Allow for OS/2 not having CPU stats */
        ap_rputs("<p>\n\n<table border=0><tr><th>Srv<th>PID<th>Acc<th>M\n<th>SS<th>Req<th>Conn<th>Child<th>Slot<th>Client<th>VHost<th>Request</tr>\n\n", r);
#else
        ap_rputs("<p>\n\n<table border=0><tr><th>Srv<th>PID<th>Acc<th>M<th>CPU\n<th>SS<th>Req<th>Conn<th>Child<th>Slot<th>Client<th>VHost<th>Request</tr>\n\n", r);
#endif
    }

    for (i = 0; i < HARD_SERVER_LIMIT; ++i) {
    for (j = 0; j < HARD_THREAD_LIMIT; ++j) {
        score_record = ap_scoreboard_image->servers[i][j];
        ps_record = ap_scoreboard_image->parent[i];
        vhost = score_record.vhostrec;
        if (ps_record.generation != ap_my_generation) {
        vhost = NULL;
        }

#if defined(NO_GETTIMEOFDAY)
#ifndef NO_TIMES
        if (score_record.start_time == (clock_t) 0)
#endif /* NO_TIMES */
        req_time = 0L;
#ifndef NO_TIMES
        else {
        req_time = score_record.stop_time - score_record.start_time;
        req_time = (req_time * 1000) / (int) tick;
        }
#endif /* NO_TIMES */
#else
        if (score_record.start_time == 0L &&
        score_record.start_time == 0L)
        req_time = 0L;
        else
        req_time =
            ((score_record.stop_time - score_record.start_time) * 1000) +
            ((score_record.stop_time - score_record.start_time) / 1000);
#endif
        if (req_time < 0L)
        req_time = 0L;

        lres = score_record.access_count;
        my_lres = score_record.my_access_count;
        conn_lres = score_record.conn_count;
        bytes = score_record.bytes_served;
        my_bytes = score_record.my_bytes_served;
        conn_bytes = score_record.conn_bytes;
        if (lres != 0 || (score_record.status != SERVER_READY
                  && score_record.status != SERVER_DEAD)) {
        if (!short_report) {
            if (no_table_report) {
            if (score_record.status == SERVER_DEAD)
                ap_rprintf(r,
                "<b>Server %d-%d</b> (-): %d|%lu|%lu [",
                i, (int) ps_record.generation, (int) conn_lres,
                my_lres, lres);
            else
                ap_rprintf(r,
                "<b>Server %d-%d</b> (%d): %d|%lu|%lu [",
                i, (int) ps_record.generation,
                (int) ps_record.pid,
                (int) conn_lres, my_lres, lres);

            switch (score_record.status) {
            case SERVER_READY:
                ap_rputs("Ready", r);
                break;
            case SERVER_STARTING:
                ap_rputs("Starting", r);
                break;
            case SERVER_BUSY_READ:
                ap_rputs("<b>Read</b>", r);
                break;
            case SERVER_BUSY_WRITE:
                ap_rputs("<b>Write</b>", r);
                break;
            case SERVER_BUSY_KEEPALIVE:
                ap_rputs("<b>Keepalive</b>", r);
                break;
            case SERVER_BUSY_LOG:
                ap_rputs("<b>Logging</b>", r);
                break;
            case SERVER_BUSY_DNS:
                ap_rputs("<b>DNS lookup</b>", r);
                break;
            case SERVER_DEAD:
                ap_rputs("Dead", r);
                break;
            case SERVER_GRACEFUL:
                ap_rputs("Graceful", r);
                break;
            default:
                ap_rputs("?STATE?", r);
                break;
            }
#ifdef NO_TIMES
            /* Allow for OS/2 not having CPU stats */
            ap_rprintf(r, "]\n %.0f %ld (",
#else

            ap_rprintf(r, "] u%g s%g cu%g cs%g\n %.0f %ld (",
                score_record.times.tms_utime / tick,
                score_record.times.tms_stime / tick,
                score_record.times.tms_cutime / tick,
                score_record.times.tms_cstime / tick,
#endif
#ifdef OPTIMIZE_TIMEOUTS
                difftime(nowtime, ps_record.last_rtime),
#else
                difftime(nowtime, score_record.last_used),
#endif
                (long) req_time);
            format_byte_out(r, conn_bytes);
            ap_rputs("|", r);
            format_byte_out(r, my_bytes);
            ap_rputs("|", r);
            format_byte_out(r, bytes);
            ap_rputs(")\n", r);
            ap_rprintf(r, " <i>%s {%s}</i> <b>[%s]</b><br>\n\n",
                ap_escape_html(r->pool, score_record.client),
                ap_escape_html(r->pool, score_record.request),
                vhost ? ap_escape_html(r->pool,
                vhost->server_hostname) : "(unavailable)");
            }
            else {      /* !no_table_report */
            if (score_record.status == SERVER_DEAD)
                ap_rprintf(r,
                "<tr><td><b>%d-%d</b><td>-<td>%d/%lu/%lu",
                i, (int) ps_record.generation,
                (int) conn_lres, my_lres, lres);
            else
                ap_rprintf(r,
                "<tr><td><b>%d-%d</b><td>%d<td>%d/%lu/%lu",
                i, (int) ps_record.generation,
                (int) ps_record.pid, (int) conn_lres,
                my_lres, lres);

            switch (score_record.status) {
            case SERVER_READY:
                ap_rputs("<td>_", r);
                break;
            case SERVER_STARTING:
                ap_rputs("<td><b>S</b>", r);
                break;
            case SERVER_BUSY_READ:
                ap_rputs("<td><b>R</b>", r);
                break;
            case SERVER_BUSY_WRITE:
                ap_rputs("<td><b>W</b>", r);
                break;
            case SERVER_BUSY_KEEPALIVE:
                ap_rputs("<td><b>K</b>", r);
                break;
            case SERVER_BUSY_LOG:
                ap_rputs("<td><b>L</b>", r);
                break;
            case SERVER_BUSY_DNS:
                ap_rputs("<td><b>D</b>", r);
                break;
            case SERVER_DEAD:
                ap_rputs("<td>.", r);
                break;
            case SERVER_GRACEFUL:
                ap_rputs("<td>G", r);
                break;
            default:
                ap_rputs("<td>?", r);
                break;
            }
#ifdef NO_TIMES
            /* Allow for OS/2 not having CPU stats */
            ap_rprintf(r, "\n<td>%.0f<td>%ld",
#else
            ap_rprintf(r, "\n<td>%.2f<td>%.0f<td>%ld",
                (score_record.times.tms_utime +
                 score_record.times.tms_stime +
                 score_record.times.tms_cutime +
                 score_record.times.tms_cstime) / tick,
#endif
#ifdef OPTIMIZE_TIMEOUTS
                difftime(nowtime, ps_record.last_rtime),
#else
                difftime(nowtime, score_record.last_used),
#endif
                (long) req_time);
            ap_rprintf(r, "<td>%-1.1f<td>%-2.2f<td>%-2.2f\n",
               (float) conn_bytes / KBYTE, (float) my_bytes / MBYTE,
                (float) bytes / MBYTE);
            if (score_record.status == SERVER_BUSY_READ)
                ap_rprintf(r,
                 "<td>?<td nowrap>?<td nowrap>..reading.. </tr>\n\n");
            else
                ap_rprintf(r,
                 "<td>%s<td nowrap>%s<td nowrap>%s</tr>\n\n",
                 ap_escape_html(r->pool, score_record.client),
                 vhost ? ap_escape_html(r->pool,
                vhost->server_hostname) : "(unavailable)",
                 ap_escape_html(r->pool, score_record.request));
            }       /* no_table_report */
        }           /* !short_report */
        }           /* if (<active child>) */
    }               /* for () */
    }

    if (!(short_report || no_table_report)) {
#ifdef NO_TIMES
        ap_rputs("</table>\n \
<hr> \
<table>\n \
<tr><th>Srv<td>Child Server number - generation\n \
<tr><th>PID<td>OS process ID\n \
<tr><th>Acc<td>Number of accesses this connection / this child / this slot\n \
<tr><th>M<td>Mode of operation\n \
<tr><th>SS<td>Seconds since beginning of most recent request\n \
<tr><th>Req<td>Milliseconds required to process most recent request\n \
<tr><th>Conn<td>Kilobytes transferred this connection\n \
<tr><th>Child<td>Megabytes transferred this child\n \
<tr><th>Slot<td>Total megabytes transferred this slot\n \
</table>\n", r);
#else
        ap_rputs("</table>\n \
<hr> \
<table>\n \
<tr><th>Srv<td>Child Server number - generation\n \
<tr><th>PID<td>OS process ID\n \
<tr><th>Acc<td>Number of accesses this connection / this child / this slot\n \
<tr><th>M<td>Mode of operation\n \
<tr><th>CPU<td>CPU usage, number of seconds\n \
<tr><th>SS<td>Seconds since beginning of most recent request\n \
<tr><th>Req<td>Milliseconds required to process most recent request\n \
<tr><th>Conn<td>Kilobytes transferred this connection\n \
<tr><th>Child<td>Megabytes transferred this child\n \
<tr><th>Slot<td>Total megabytes transferred this slot\n \
</table>\n", r);
#endif
    }

    } else {

    if (!short_report) {
        ap_rputs("<hr>To obtain a full report with current status information ", r);
        ap_rputs("you need to use the <code>ExtendedStatus On</code> directive. \n", r);
    }

    }

    if (!short_report) {
    ap_rputs(ap_psignature("<HR>\n",r), r);
    ap_rputs("</BODY></HTML>\n", r);
    }

    return 0;
}


static void status_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
    status_flags[SERVER_DEAD] = '.';    /* We don't want to assume these are in */
    status_flags[SERVER_READY] = '_';   /* any particular order in scoreboard.h */
    status_flags[SERVER_STARTING] = 'S';
    status_flags[SERVER_BUSY_READ] = 'R';
    status_flags[SERVER_BUSY_WRITE] = 'W';
    status_flags[SERVER_BUSY_KEEPALIVE] = 'K';
    status_flags[SERVER_BUSY_LOG] = 'L';
    status_flags[SERVER_BUSY_DNS] = 'D';
    status_flags[SERVER_GRACEFUL] = 'G';
}

static void register_hooks(apr_pool_t *p)
{
    ap_hook_handler(status_handler, NULL, NULL, APR_HOOK_MIDDLE);
    ap_hook_post_config(status_init, NULL, NULL, APR_HOOK_MIDDLE);
}

module AP_MODULE_DECLARE_DATA status_module =
{
    STANDARD20_MODULE_STUFF,
    NULL,           /* dir config creater */
    NULL,           /* dir merger --- default is to override */
    NULL,           /* server config */
    NULL,           /* merge server config */
    status_module_cmds,     /* command table */
    register_hooks              /* register_hooks */
};