hostapd/dump_state.c

   1 /*
   2  * hostapd / State dump
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10 #include <time.h>
  11
  12 #include "utils/common.h"
  13 #include "eapol_auth/eapol_auth_sm.h"
  14 #include "eapol_auth/eapol_auth_sm_i.h"
  15 #include "eap_server/eap.h"
  16 #include "ap/hostapd.h"
  17 #include "ap/ap_config.h"
  18 #include "ap/sta_info.h"
  19 #include "dump_state.h"
  20 #include "ap/ap_drv_ops.h"
  21
  22
  23 static void ieee802_1x_dump_state(FILE *f, struct sta_info *sta)
  24 {
  25         struct eapol_state_machine *sm = sta->eapol_sm;
  26         char buf[4096];
  27         int res;
  28
  29         if (sm == NULL)
  30                 return;
  31         res = eapol_auth_dump_state(sm, buf, sizeof(buf));
  32         if (res > 0)
  33                 fprintf(f, "%s", buf);
  34 }
  35
  36
  37 /**
  38  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
  39  */
  40 static void hostapd_dump_state(struct hostapd_data *hapd)
  41 {
  42         FILE *f;
  43         time_t now;
  44         struct sta_info *sta;
  45
  46         if (!hapd->conf->dump_log_name) {
  47                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
  48                            "request");
  49                 return;
  50         }
  51
  52         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
  53                    hapd->conf->dump_log_name);
  54         f = fopen(hapd->conf->dump_log_name, "w");
  55         if (f == NULL) {
  56                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
  57                            "writing.", hapd->conf->dump_log_name);
  58                 return;
  59         }
  60
  61         time(&now);
  62         fprintf(f, "hostapd state dump - %s", ctime(&now));
  63
  64         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
  65                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
  66                 ieee802_1x_dump_state(f, sta);
  67         }
  68
  69         fclose(f);
  70 }
  71
  72
  73 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
  74 {
  75         size_t i;
  76
  77         for (i = 0; i < iface->num_bss; i++)
  78                 hostapd_dump_state(iface->bss[i]);
  79
  80         return 0;
  81 }