hostapd/dump_state.c

   1 /*
   2  * hostapd / State dump
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16 #include <time.h>
  17
  18 #include "utils/common.h"
  19 #include "radius/radius_client.h"
  20 #include "radius/radius_server.h"
  21 #include "eapol_auth/eapol_auth_sm.h"
  22 #include "eapol_auth/eapol_auth_sm_i.h"
  23 #include "eap_server/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "ap/ap_config.h"
  26 #include "ap/sta_info.h"
  27 #include "dump_state.h"
  28
  29
  30 static void fprint_char(FILE *f, char c)
  31 {
  32         if (c >= 32 && c < 127)
  33                 fprintf(f, "%c", c);
  34         else
  35                 fprintf(f, "<%02x>", c);
  36 }
  37
  38
  39 static void ieee802_1x_dump_state(FILE *f, const char *prefix,
  40                                   struct sta_info *sta)
  41 {
  42         struct eapol_state_machine *sm = sta->eapol_sm;
  43         if (sm == NULL)
  44                 return;
  45
  46         fprintf(f, "%sIEEE 802.1X:\n", prefix);
  47
  48         if (sm->identity) {
  49                 size_t i;
  50                 fprintf(f, "%sidentity=", prefix);
  51                 for (i = 0; i < sm->identity_len; i++)
  52                         fprint_char(f, sm->identity[i]);
  53                 fprintf(f, "\n");
  54         }
  55
  56         fprintf(f, "%slast EAP type: Authentication Server: %d (%s) "
  57                 "Supplicant: %d (%s)\n", prefix,
  58                 sm->eap_type_authsrv,
  59                 eap_server_get_name(0, sm->eap_type_authsrv),
  60                 sm->eap_type_supp, eap_server_get_name(0, sm->eap_type_supp));
  61
  62         fprintf(f, "%scached_packets=%s\n", prefix,
  63                 sm->last_recv_radius ? "[RX RADIUS]" : "");
  64
  65         eapol_auth_dump_state(f, prefix, sm);
  66 }
  67
  68
  69 /**
  70  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
  71  */
  72 static void hostapd_dump_state(struct hostapd_data *hapd)
  73 {
  74         FILE *f;
  75         time_t now;
  76         struct sta_info *sta;
  77         int i;
  78 #ifndef CONFIG_NO_RADIUS
  79         char *buf;
  80 #endif /* CONFIG_NO_RADIUS */
  81
  82         if (!hapd->conf->dump_log_name) {
  83                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
  84                            "request");
  85                 return;
  86         }
  87
  88         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
  89                    hapd->conf->dump_log_name);
  90         f = fopen(hapd->conf->dump_log_name, "w");
  91         if (f == NULL) {
  92                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
  93                            "writing.", hapd->conf->dump_log_name);
  94                 return;
  95         }
  96
  97         time(&now);
  98         fprintf(f, "hostapd state dump - %s", ctime(&now));
  99         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 100                 "num_sta_no_short_slot_time=%d\n"
 101                 "num_sta_no_short_preamble=%d\n",
 102                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 103                 hapd->iface->num_sta_no_short_slot_time,
 104                 hapd->iface->num_sta_no_short_preamble);
 105
 106         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 107                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 108
 109                 fprintf(f,
 110                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
 111                         "\n"
 112                         "  capability=0x%x listen_interval=%d\n",
 113                         sta->aid,
 114                         sta->flags,
 115                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 116                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 117                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 118                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 119                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 120                         (ap_sta_is_authorized(sta) ? "[AUTHORIZED]" : ""),
 121                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 122                          ""),
 123                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 124                          "[SHORT_PREAMBLE]" : ""),
 125                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 126                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 127                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 128                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 129                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 130                         (sta->flags & WLAN_STA_WDS ? "[WDS]" : ""),
 131                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 132                         (sta->flags & WLAN_STA_WPS2 ? "[WPS2]" : ""),
 133                         sta->capability,
 134                         sta->listen_interval);
 135
 136                 fprintf(f, "  supported_rates=");
 137                 for (i = 0; i < sta->supported_rates_len; i++)
 138                         fprintf(f, "%02x ", sta->supported_rates[i]);
 139                 fprintf(f, "\n");
 140
 141                 fprintf(f,
 142                         "  timeout_next=%s\n",
 143                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 144                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 145                           "DEAUTH")));
 146
 147                 ieee802_1x_dump_state(f, "  ", sta);
 148         }
 149
 150 #ifndef CONFIG_NO_RADIUS
 151         buf = os_malloc(4096);
 152         if (buf) {
 153                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 154                 if (count < 0)
 155                         count = 0;
 156                 else if (count > 4095)
 157                         count = 4095;
 158                 buf[count] = '\0';
 159                 fprintf(f, "%s", buf);
 160
 161 #ifdef RADIUS_SERVER
 162                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 163                 if (count < 0)
 164                         count = 0;
 165                 else if (count > 4095)
 166                         count = 4095;
 167                 buf[count] = '\0';
 168                 fprintf(f, "%s", buf);
 169 #endif /* RADIUS_SERVER */
 170
 171                 os_free(buf);
 172         }
 173 #endif /* CONFIG_NO_RADIUS */
 174         fclose(f);
 175 }
 176
 177
 178 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
 179 {
 180         size_t i;
 181
 182         for (i = 0; i < iface->num_bss; i++)
 183                 hostapd_dump_state(iface->bss[i]);
 184
 185         return 0;
 186 }