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