server > main.c > main


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int main(int argc, const char * const argv[])
{
   char c;
   int configtestonly = 0;
   const char *confname = SERVER_CONFIG_FILE;
   const char *def_server_root = HTTPD_ROOT;
   const char *temp_error_log = NULL;
   process_rec *process;
   server_rec *server_conf;
   apr_pool_t *pglobal;
   apr_pool_t *pconf;
   apr_pool_t *plog; /* Pool of log streams, reset _after_ each read of conf */
   apr_pool_t *ptemp; /* Pool for temporary config stuff, reset often */
   apr_pool_t *pcommands; /* Pool for -D, -C and -c switches */
   apr_getopt_t *opt;
   apr_status_t rv;
   module **mod;
   const char *optarg;
   APR_OPTIONAL_FN_TYPE(ap_signal_server) *signal_server;

   AP_MONCONTROL(0); /* turn off profiling of startup */

   process = init_process(&argc, &argv);
   pglobal = process->pool;
   pconf = process->pconf;
   ap_server_argv0 = process->short_name;

#if
APR_CHARSET_EBCDIC
   if (ap_init_ebcdic(pglobal) != APR_SUCCESS) {
       destroy_and_exit_process(process, 1);
   }
#endif
   apr_pool_create(&pcommands, pglobal);
   apr_pool_tag(pcommands, "pcommands");
   ap_server_pre_read_config  = apr_array_make(pcommands, 1, sizeof(char *));
   ap_server_post_read_config = apr_array_make(pcommands, 1, sizeof(char *));
   ap_server_config_defines   = apr_array_make(pcommands, 1, sizeof(char *));

   ap_setup_prelinked_modules(process);

   ap_run_rewrite_args(process);

   /* Maintain AP_SERVER_BASEARGS list in http_main.h to allow the MPM
    * to safely pass on our args from its rewrite_args() handler.
    */
   apr_getopt_init(&opt, pcommands, process->argc, process->argv);

   while ((rv = apr_getopt(opt, AP_SERVER_BASEARGS, &c, &optarg))
           == APR_SUCCESS) {
       char **new;

       switch (c) {
       case 'c':
           new = (char **)apr_array_push(ap_server_post_read_config);
           *new = apr_pstrdup(pcommands, optarg);
           break;

       case 'C':
           new = (char **)apr_array_push(ap_server_pre_read_config);
           *new = apr_pstrdup(pcommands, optarg);
           break;

       case 'd':
           def_server_root = optarg;
           break;

       case 'D':
           new = (char **)apr_array_push(ap_server_config_defines);
           *new = apr_pstrdup(pcommands, optarg);
           break;

       case 'e':
           if (strcasecmp(optarg, "emerg") == 0) {
               ap_default_loglevel = APLOG_EMERG;
           }
           else if (strcasecmp(optarg, "alert") == 0) {
               ap_default_loglevel = APLOG_ALERT;
           }
           else if (strcasecmp(optarg, "crit") == 0) {
               ap_default_loglevel = APLOG_CRIT;
           }
           else if (strncasecmp(optarg, "err", 3) == 0) {
               ap_default_loglevel = APLOG_ERR;
           }
           else if (strncasecmp(optarg, "warn", 4) == 0) {
               ap_default_loglevel = APLOG_WARNING;
           }
           else if (strcasecmp(optarg, "notice") == 0) {
               ap_default_loglevel = APLOG_NOTICE;
           }
           else if (strcasecmp(optarg, "info") == 0) {
               ap_default_loglevel = APLOG_INFO;
           }
           else if (strcasecmp(optarg, "debug") == 0) {
               ap_default_loglevel = APLOG_DEBUG;
           }
           else {
               usage(process);
           }
           break;

       case 'E':
           temp_error_log = apr_pstrdup(process->pool, optarg);
           break;

       case 'X':
           new = (char **)apr_array_push(ap_server_config_defines);
           *new = "DEBUG";
           break;

       case 'f':
           confname = optarg;
           break;

       case 'v':
           printf("Server version: %s\n", ap_get_server_version());
           printf("Server built:   %s\n", ap_get_server_built());
           destroy_and_exit_process(process, 0);

       case 'V':
           show_compile_settings();
           destroy_and_exit_process(process, 0);

       case 'l':
           ap_show_modules();
           destroy_and_exit_process(process, 0);

       case 'L':
           ap_show_directives();
           destroy_and_exit_process(process, 0);

       case 't':
           configtestonly = 1;
           break;
       
       case 'S':
           configtestonly = 1;
           new = (char **)apr_array_push(ap_server_config_defines);
           *new = "DUMP_VHOSTS";
           break;
           
       case 'h':
       case '?':
           usage(process);
       }
   }

   /* bad cmdline option?  then we die */
   if (rv != APR_EOF || opt->ind < opt->argc) {
       usage(process);
   }

   apr_pool_create(&plog, pglobal);
   apr_pool_tag(plog, "plog");
   apr_pool_create(&ptemp, pconf);
   apr_pool_tag(ptemp, "ptemp");

   /* Note that we preflight the config file once
    * before reading it _again_ in the main loop.
    * This allows things, log files configuration
    * for example, to settle down.
    */

   ap_server_root = def_server_root;
   if (temp_error_log) {
       ap_replace_stderr_log(process->pool, temp_error_log);
   }
   server_conf = ap_read_config(process, ptemp, confname, &ap_conftree);
   if (ap_run_pre_config(pconf, plog, ptemp) != OK) {
       ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR, 0,
                    NULL, "Pre-configuration failed");
       destroy_and_exit_process(process, 1);
   }

   ap_process_config_tree(server_conf, ap_conftree, process->pconf, ptemp);
   ap_fixup_virtual_hosts(pconf, server_conf);
   ap_fini_vhost_config(pconf, server_conf);
   apr_hook_sort_all();
   if (configtestonly) {
       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, "Syntax OK");
       destroy_and_exit_process(process, 0);
   }

   signal_server = APR_RETRIEVE_OPTIONAL_FN(ap_signal_server);
   if (signal_server) {
       int exit_status;

       if (signal_server(&exit_status, pconf) != 0) {
           destroy_and_exit_process(process, exit_status);
       }
   }

   apr_pool_clear(plog);

   if ( ap_run_open_logs(pconf, plog, ptemp, server_conf) != OK) {
       ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR,
                    0, NULL, "Unable to open logs");
       destroy_and_exit_process(process, 1);
   }

   if ( ap_run_post_config(pconf, plog, ptemp, server_conf) != OK) {
       ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR, 0,
                    NULL, "Configuration Failed");
       destroy_and_exit_process(process, 1);
   }

   apr_pool_destroy(ptemp);

   for (;;) {
       apr_hook_deregister_all();
       apr_pool_clear(pconf);

       for (mod = ap_prelinked_modules; *mod != NULL; mod++) {
           ap_register_hooks(*mod, pconf);
       }

       /* This is a hack until we finish the code so that it only reads
        * the config file once and just operates on the tree already in
        * memory.  rbb
        */
       ap_conftree = NULL;
       apr_pool_create(&ptemp, pconf);
       apr_pool_tag(ptemp, "ptemp");
       ap_server_root = def_server_root;
       server_conf = ap_read_config(process, ptemp, confname, &ap_conftree);
       if (ap_run_pre_config(pconf, plog, ptemp) != OK) {
           ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR,
                        0, NULL, "Pre-configuration failed");
           destroy_and_exit_process(process, 1);
       }

       ap_process_config_tree(server_conf, ap_conftree, process->pconf, ptemp);
       ap_fixup_virtual_hosts(pconf, server_conf);
       ap_fini_vhost_config(pconf, server_conf);
       apr_hook_sort_all();
       apr_pool_clear(plog);
       if (ap_run_open_logs(pconf, plog, ptemp, server_conf) != OK) {
           ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR,
                        0, NULL, "Unable to open logs");
           destroy_and_exit_process(process, 1);
       }

       if (ap_run_post_config(pconf, plog, ptemp, server_conf) != OK) {
           ap_log_error(APLOG_MARK, APLOG_STARTUP |APLOG_ERR,
                        0, NULL, "Configuration Failed");
           destroy_and_exit_process(process, 1);
       }

       apr_pool_destroy(ptemp);
       apr_pool_lock(pconf, 1);

       ap_run_optional_fn_retrieve();

       if (ap_mpm_run(pconf, plog, server_conf))
           break;

       apr_pool_lock(pconf, 0);
   }

   apr_pool_lock(pconf, 0);
   destroy_and_exit_process(process, 0);

   return 0; /* Termination 'ok' */
}