mod_caucho.c

RESIN 3.2 最新源码

/*
 * Copyright (c) 1998-2003 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

#ifndef WIN32
#include "ap_config_auto.h"
#endif
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_log.h"
#include "http_main.h"
#include "util_script.h"
#include <stdlib.h>
#include <errno.h>

#if !defined(EAPI) && (MODULE_MAGIC_COOKIE == MODULE_MAGIC_COOKIE_EAPI)
#define EAPI 1
#endif

#include "../common/cse.h"
#include "../common/version.h"

/*
 * Apache magic module declaration.
 */
module MODULE_VAR_EXPORT caucho_module;

#define DEFAULT_PORT 6802

static char *g_error_page = 0;
static config_t *g_config = 0;
static pool *g_pool = 0;
static char session_decode[128];

void
cse_log(char *fmt, ...)
{
#ifdef DEBUG
  va_list args;
  FILE *file = fopen("/tmp/log", "a+");

  if (file) {  
    time_t now = time(0);
    struct tm *now_tm = localtime(&now);
    char date[80];
    
    strftime(date, sizeof(date), "%H:%M:%S", now_tm);
    fprintf(file, "%d:[%s] ", getpid(), date);

    va_start(args, fmt);
    vfprintf(file, fmt, args);
    va_end(args);
    fclose(file);
  }
#endif
}

void *
cse_create_lock(config_t *config)
{
#ifdef WIN32
	return CreateMutex(0, 0, 0);
#else
    return 0;
#endif
}

void
cse_free_lock(config_t *config, void *vlock)
{
}

int
cse_lock(void *lock)
{
#ifdef WIN32
  if (lock) {
    WaitForSingleObject(lock, INFINITE);
  }
  return 1;
#else
  return 1;
#endif
}

void
cse_unlock(void *lock)
{
#ifdef WIN32
	if (lock)
		ReleaseMutex(lock);
#endif
}

void
cse_error(config_t *config, char *format, ...)
{
  char buf[BUF_LENGTH];
  va_list args;

  va_start(args, format);
  vsprintf(buf, format, args);
  va_end(args);

  LOG(("ERROR: %s\n", buf));

  config->error = cse_strdup(config->p, buf);
}

void
cse_set_socket_cleanup(int socket, void *pool)
{
  LOG(("set cleanup %d\n", socket));

  if (socket > 0 && pool)
    ap_note_cleanups_for_socket(pool, socket);
}

void
cse_kill_socket_cleanup(int socket, void *pool)
{
  LOG(("kill cleanup %d\n", socket));

  if (socket > 0 && pool)
    ap_kill_cleanups_for_socket(pool, socket);
}

void *
cse_malloc(int size)
{
  return malloc(size);
}

void cse_free(void *data) {}

static void
cse_module_init(struct server_rec *server, struct pool *pool)
{
  ap_add_version_component(VERSION);
}

static void *
cse_create_server_config(pool *p, server_rec *server)
{
  config_t *config;

  if (! g_pool)
    g_pool = ap_make_sub_pool(p);

  config = (config_t *) ap_pcalloc(g_pool, sizeof(config_t));
  memset(config, 0, sizeof(config_t));

  config->web_pool = g_pool;
  cse_init_config(config);

  g_config = config;
  
  return (void *) config;
}

static void *
cse_create_dir_config(pool *p, char *dir)
{
  config_t *config;

  if (! g_pool)
    g_pool = ap_make_sub_pool(p);

  config = (config_t *) ap_pcalloc(g_pool, sizeof(config_t));
  memset(config, 0, sizeof(config_t));

  config->web_pool = g_pool;
  cse_init_config(config);

  if (! g_config)
    g_config = config;
  
  return (void *) config;
}

/**
 * Retrieves the caucho configuration from Apache
 */
static config_t *
cse_get_module_config(request_rec *r)
{
  config_t *config = 0;

  if (r->per_dir_config)
    config = (config_t *) ap_get_module_config(r->per_dir_config, &caucho_module);
  if (config)
    return config;

  if (r->server->module_config)
    config = (config_t *) ap_get_module_config(r->server->module_config,
                                               &caucho_module);

  if (config)
    return config;
  else
    return g_config;
}

static config_t *
cse_get_cmd_config(cmd_parms *cmd)
{
  config_t *config = (config_t *) ap_get_module_config(cmd->context, &caucho_module);

  if (config)
    return config;
  
  config = (config_t *) ap_get_module_config(cmd->server->module_config,
                                             &caucho_module);
  if (config)
    return config;
  else
    return g_config;
}

/**
 * Parse the ResinConfigServer configuration in the apache config file.
 */
static const char *
cse_config_server_command(cmd_parms *cmd, void *mconfig,
			  char *host_arg, char *port_arg)
{
  config_t *config = cse_get_cmd_config(cmd);
  int port = port_arg ? atoi(port_arg) : DEFAULT_PORT;

  /*
  cse_add_host(&config->config_cluster, host_arg, port);
  */
  cse_add_config_server(config->p, config, host_arg, port);

  return 0;
}

/**
 * Parse the CauchoStatus configuration in the apache config file.
 */
static const char *
cse_caucho_status_command(cmd_parms *cmd, void *pconfig, char *value)
{
  config_t *config = cse_get_cmd_config(cmd);
  
  if (! config)
    return 0;  

  if (value == 0 || ! strcmp(value, "true") || ! strcmp(value, "yes"))
    config->enable_caucho_status = 1;
  else
    config->enable_caucho_status = 0;

  return 0;
}

/**
 * Parse the CauchoConfigHost configuration in the apache config file.
 */
static const char *
cse_config_file_command(cmd_parms *cmd, void *mconfig, char *value)
{
  return "CauchoConfigFile has been replaced by ResinConfigServer.\n";
}

/**
 * Parse the server root.
 */
static const char *
cse_config_server_root(cmd_parms *cmd, void *mconfig, char *value)
{
  config_t *config = cse_get_cmd_config(cmd);
 
  config->resin_home = ap_server_root_relative(cmd->pool, value);

  return 0;
}

/**
 * Parse the CauchoHosts configuration in the apache config file.
 */
static const char *
cse_host_command(cmd_parms *cmd, void *mconfig, char *host_arg, char *port_arg)
{
  config_t *config = cse_get_cmd_config(cmd);
  int port = port_arg ? atoi(port_arg) : DEFAULT_PORT;
  resin_host_t *host;

  host = config->manual_host;
  if (! host) {
    host = cse_alloc(config->p, sizeof(resin_host_t));
    memset(host, 0, sizeof(resin_host_t));
    
    host->name = "manual";
    host->canonical = host;

    host->config = config;
    
    host->cluster.config = config;
    host->cluster.round_robin_index = -1;
    
    config->manual_host = host;
  }

  cse_add_host(config->p, &host->cluster, host_arg, port);

  return 0;
}

/**
 * Parse the CauchoBackup configuration in the apache config file.
 */
static const char *
cse_backup_command(cmd_parms *cmd, void *mconfig,
		   char *host_arg, char *port_arg)
{
  config_t *config = cse_get_cmd_config(cmd);
  int port = port_arg ? atoi(port_arg) : DEFAULT_PORT;
  resin_host_t *host;

  host = config->manual_host;
  if (! host) {
    host = cse_alloc(config->p, sizeof(resin_host_t));
    memset(host, 0, sizeof(resin_host_t));
    
    host->name = "manual";
    host->canonical = host;

    host->config = config;
    
    host->cluster.config = config;
    host->cluster.round_robin_index = -1;
    
    config->manual_host = host;
  }

  cse_add_backup(config->p, &host->cluster, host_arg, port);

  return 0;
}

/**
 * Parse the CauchoKeepalive configuration in the apache config file.
 */
static const char *
cse_keepalive_command(cmd_parms *cmd, void *mconfig, int flag)
{
  /* g_srun_keepalive = flag; */

  return 0;
}

/**
 * Parse the CauchoHosts configuration in the apache config file.
 */
static const char *
cse_error_page_command(cmd_parms *cmd, void *mconfig, char *error_page_arg)
{
  g_error_page = error_page_arg;

  return 0;
}

/**
 * Look at the request to see if Caucho should handle it.
 */
static int
cse_clean_jsessionid(request_rec *r)
{
  config_t *config = cse_get_module_config(r);
  char *uri = (char *) r->uri;
  char *new_uri;

  if (config == NULL)
    return DECLINED;

  /*
  cse_update_config(config, r->request_time);
  */

  if (*config->alt_session_url_prefix) {
    if (! strncmp(uri + 1, config->alt_session_url_prefix,
                  sizeof(config->alt_session_url_prefix))) {
      char *p = strchr(uri + 1, '/');

      if (r->request_config)
        ap_set_module_config(r->request_config, &caucho_module, uri);

      r->uri = p;

      /* strip session encoding from file */
      if (r->filename) {
        char *prefix = strstr(r->filename, config->alt_session_url_prefix);
        p = prefix ? strchr(prefix, '/') : 0;
        
        if (prefix && p) {
          memcpy(prefix, p, strlen(p));

          /* restat the new filename */
          if (stat(r->filename, &r->finfo) < 0)
            r->finfo.st_mode = 0;
        }
      }
    }
  }
  else {
    new_uri = strstr(uri, config->session_url_prefix);
    if (new_uri) {
      if (r->request_config) {
        ap_set_module_config(r->request_config, &caucho_module,