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