dump_state.c revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4 
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
24static 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
33static 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 */
66static 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
172int 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}
181