aboutsummaryrefslogtreecommitdiffstats
path: root/scan_scr.c
blob: 611a32fc21c64d8fd397b1059820f8ed1236400a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
/*
 * wavemon - a wireless network monitoring aplication
 *
 * Copyright (c) 2001-2002 Jan Morgenstern <jan@jm-music.de>
 *
 * wavemon is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2, or (at your option) any later
 * version.
 *
 * wavemon is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along
 * with wavemon; see the file COPYING.  If not, write to the Free Software
 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#include "iw_if.h"

#define START_LINE	2	/* where to begin the screen */

/* GLOBALS */
static struct scan_result sr;
static pthread_t scan_thread;
static WINDOW *w_aplst;

/**
 * Sanitize and format single scan entry as a string.
 * @cur: entry to format
 * @buf: buffer to put results into
 * @buflen: length of @buf
 */
static void fmt_scan_entry(struct scan_entry *cur, char buf[], size_t buflen)
{
	size_t len = 0;

	if (!(cur->qual.updated & (IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID)))
		len += snprintf(buf + len, buflen - len, "%3.0f%%, %.0f dBm",
				1E2 * cur->qual.qual / sr.range.max_qual.qual,
				cur->dbm.signal);
	else if (!(cur->qual.updated & IW_QUAL_QUAL_INVALID))
		len += snprintf(buf + len, buflen - len, "%2d/%d",
				cur->qual.qual, sr.range.max_qual.qual);
	else if (!(cur->qual.updated & IW_QUAL_LEVEL_INVALID))
		len += snprintf(buf + len, buflen - len, "%.0f dBm",
				cur->dbm.signal);
	else
		len += snprintf(buf + len, buflen - len, "? dBm");

	if (cur->freq < 1e3)
		len += snprintf(buf + len, buflen - len, ", Chan %2.0f",
				cur->freq);
	else if (cur->chan >= 0)
		len += snprintf(buf + len, buflen - len, ", %s %3d, %g MHz",
				cur->freq < 5e9 ? "ch" : "CH",
				cur->chan, cur->freq / 1e6);
	else
		len += snprintf(buf + len, buflen - len, ", %g GHz",
				cur->freq / 1e9);

	/* Access Points are marked by CP_SCAN_CRYPT/CP_SCAN_UNENC already */
	if (cur->mode != IW_MODE_MASTER)
		len += snprintf(buf + len, buflen - len, " %s",
				iw_opmode(cur->mode));
	if (cur->flags)
		len += snprintf(buf + len, buflen - len, ", %s",
				 format_enc_capab(cur->flags, "/"));
}

static void display_aplist(WINDOW *w_aplst)
{
	char s[IW_ESSID_MAX_SIZE << 3];
	const char *sort_type[] = {
		[SO_CHAN]	= "Chan",
		[SO_SIGNAL]	= "Sig",
		[SO_ESSID]	= "Essid",
		[SO_OPEN]	= "Open",
		[SO_CHAN_SIG]	= "Ch/Sg",
		[SO_OPEN_SIG]	= "Op/Sg"
	};
	int i, col, line = START_LINE;
	struct scan_entry *cur;

	/* Scanning can take several seconds - do not refresh if locked. */
	if (pthread_mutex_trylock(&sr.mutex))
		return;

	if (sr.head || *sr.msg)
		for (i = 1; i <= MAXYLEN; i++)
			mvwclrtoborder(w_aplst, i, 1);

	if (!sr.head)
		waddstr_center(w_aplst, WAV_HEIGHT/2 - 1, sr.msg);

	sort_scan_list(&sr.head);

	/* Truncate overly long access point lists to match screen height. */
	for (cur = sr.head; cur && line < MAXYLEN; line++, cur = cur->next) {
		col = CP_SCAN_NON_AP;

		if (cur->mode == IW_MODE_MASTER)
			col = cur->has_key ? CP_SCAN_CRYPT : CP_SCAN_UNENC;

		wmove(w_aplst, line, 1);
		if (!*cur->essid) {
			sprintf(s, "%-*s ", sr.max_essid_len, "<hidden ESSID>");
			wattron(w_aplst, COLOR_PAIR(col));
			waddstr(w_aplst, s);
		} else if (str_is_ascii(cur->essid)) {
			sprintf(s, "%-*s ", sr.max_essid_len, cur->essid);
			waddstr_b(w_aplst, s);
			wattron(w_aplst, COLOR_PAIR(col));
		} else {
			sprintf(s, "%-*s ", sr.max_essid_len, "<cryptic ESSID>");
			wattron(w_aplst, COLOR_PAIR(col));
			waddstr(w_aplst, s);
		}
		waddstr(w_aplst, ether_addr(&cur->ap_addr));

		wattroff(w_aplst, COLOR_PAIR(col));

		fmt_scan_entry(cur, s, sizeof(s));
		waddstr(w_aplst, " ");
		waddstr(w_aplst, s);
	}

	if (sr.num.entries < MAX_CH_STATS)
		goto done;

	wmove(w_aplst, MAXYLEN, 1);
	wadd_attr_str(w_aplst, A_REVERSE, "total:");
	sprintf(s, " %d ", sr.num.entries);
	waddstr(w_aplst, s);

	sprintf(s, "%s %ssc", sort_type[conf.scan_sort_order], conf.scan_sort_asc ? "a" : "de");
	wadd_attr_str(w_aplst, A_REVERSE, s);

	if (sr.num.entries + START_LINE > line) {
		sprintf(s, ", %d not shown", sr.num.entries + START_LINE - line);
		waddstr(w_aplst, s);
	}
	if (sr.num.open) {
		sprintf(s, ", %d open", sr.num.open);
		waddstr(w_aplst, s);
	}

	if (sr.num.two_gig && sr.num.five_gig) {
		waddch(w_aplst, ' ');
		wadd_attr_str(w_aplst, A_REVERSE, "5/2GHz:");
		sprintf(s, " %d/%d", sr.num.five_gig, sr.num.two_gig);
		waddstr(w_aplst, s);
	}

	if (sr.channel_stats) {
		waddch(w_aplst, ' ');
		if (conf.scan_sort_order == SO_CHAN && !conf.scan_sort_asc)
			sprintf(s, "bottom-%d:", (int)sr.num.ch_stats);
		else
			sprintf(s, "top-%d:", (int)sr.num.ch_stats);
		wadd_attr_str(w_aplst, A_REVERSE, s);

		for (i = 0; i < sr.num.ch_stats; i++) {
			waddstr(w_aplst, i ? ", " : " ");
			sprintf(s, "ch#%d", sr.channel_stats[i].val);
			wadd_attr_str(w_aplst, A_BOLD, s);
			sprintf(s, " (%d)", sr.channel_stats[i].count);
			waddstr(w_aplst, s);
		}
	}
done:
	pthread_mutex_unlock(&sr.mutex);
	wrefresh(w_aplst);
}

void scr_aplst_init(void)
{
	w_aplst = newwin_title(0, WAV_HEIGHT, "Scan window", false);

	/* Gathering scan data can take seconds. Inform user. */
	mvwaddstr(w_aplst, START_LINE, 1, "Waiting for scan data ...");
	wrefresh(w_aplst);

	scan_result_init(&sr);
	pthread_create(&scan_thread, NULL, do_scan, &sr);
}

int scr_aplst_loop(WINDOW *w_menu)
{
	int key;

	display_aplist(w_aplst);

	key = wgetch(w_menu);
	switch (key) {
	case 'a':	/* ascending */
		conf.scan_sort_asc = true;
		return -1;
	case 'c':	/* channel */
		conf.scan_sort_order = SO_CHAN;
		return -1;
	case 'C':	/* channel and signal */
		conf.scan_sort_order = SO_CHAN_SIG;
		return -1;
	case 'd':	/* descending */
		conf.scan_sort_asc = false;
		return -1;
	case 'e':	/* ESSID */
		conf.scan_sort_order = SO_ESSID;
		return -1;
	case 'o':	/* open (descending is default) */
		conf.scan_sort_order = SO_OPEN;
		conf.scan_sort_asc = false;
		return -1;
	case 'O':	/* open and signal (descending) */
		conf.scan_sort_order = SO_OPEN_SIG;
		conf.scan_sort_asc = false;
		return -1;
	case 's':	/* signal */
		conf.scan_sort_order = SO_SIGNAL;
		return -1;
	}
	return key;
}

void scr_aplst_fini(void)
{
	pthread_cancel(scan_thread);
	scan_result_fini(&sr);
	delwin(w_aplst);
}