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
  16 #include "includes.h"
  17
  18 #include "common.h"
  19 #include "hostapd.h"
  20 #include "config.h"
  21 #include "sta_flags.h"
  22 #include "sta_info.h"
  23 #include "radius/radius_client.h"
  24 #include "radius/radius_server.h"
  25 #include "eapol_auth/eapol_auth_sm.h"
  26 #include "eap_server/eap.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         char *buf;
  78
  79         if (!hapd->conf->dump_log_name) {
  80                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
  81                            "request");
  82                 return;
  83         }
  84
  85         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
  86                    hapd->conf->dump_log_name);
  87         f = fopen(hapd->conf->dump_log_name, "w");
  88         if (f == NULL) {
  89                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
  90                            "writing.", hapd->conf->dump_log_name);
  91                 return;
  92         }
  93
  94         time(&now);
  95         fprintf(f, "hostapd state dump - %s", ctime(&now));
  96         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
  97                 "num_sta_no_short_slot_time=%d\n"
  98                 "num_sta_no_short_preamble=%d\n",
  99                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 100                 hapd->iface->num_sta_no_short_slot_time,
 101                 hapd->iface->num_sta_no_short_preamble);
 102
 103         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 104                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 105
 106                 fprintf(f,
 107                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
 108                         "  capability=0x%x listen_interval=%d\n",
 109                         sta->aid,
 110                         sta->flags,
 111                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 112                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 113                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 114                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 115                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 116                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 117                          ""),
 118                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 119                          ""),
 120                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 121                          "[SHORT_PREAMBLE]" : ""),
 122                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 123                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 124                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 125                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 126                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 127                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 128                         sta->capability,
 129                         sta->listen_interval);
 130
 131                 fprintf(f, "  supported_rates=");
 132                 for (i = 0; i < sta->supported_rates_len; i++)
 133                         fprintf(f, "%02x ", sta->supported_rates[i]);
 134                 fprintf(f, "\n");
 135
 136                 fprintf(f,
 137                         "  timeout_next=%s\n",
 138                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 139                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 140                           "DEAUTH")));
 141
 142                 ieee802_1x_dump_state(f, "  ", sta);
 143         }
 144
 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                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 156                 if (count < 0)
 157                         count = 0;
 158                 else if (count > 4095)
 159                         count = 4095;
 160                 buf[count] = '\0';
 161                 fprintf(f, "%s", buf);
 162                 os_free(buf);
 163         }
 164         fclose(f);
 165 }
 166
 167
 168 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
 169 {
 170         size_t i;
 171
 172         for (i = 0; i < iface->num_bss; i++)
 173                 hostapd_dump_state(iface->bss[i]);
 174
 175         return 0;
 176 }