dump_state.c revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a 
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
30static 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
39static 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 */
72static 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
178int 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}
187