New upstream version 0.8.2upstream/0.8.2

11 files changed, 64 insertions, 207 deletions

diff --git a/Makefile.in b/Makefile.in
index d2e1c01..c9ecc37 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -20,7 +20,7 @@ RM	= rm -vf
 
 MAIN	= @PACKAGE_NAME@.c
 HEADERS	= $(wildcard *.h)
-PURESRC	= $(filter-out $(MAIN),$(wildcard *.c))
+PURESRC	= $(filter-out $(MAIN),$(sort $(wildcard *.c)))
 OBJS	= $(PURESRC:.c=.o)
 DOCS	= README.md NEWS THANKS AUTHORS COPYING ChangeLog
 
diff --git a/about_scr.c b/about_scr.c
index fb4c080..76adaba 100644
--- a/about_scr.c
+++ b/about_scr.c
@@ -29,9 +29,6 @@ static char *about_lines[] = {
 	"original by jan morgenstern <jan@jm-music.de>",
 	"distributed under the GNU general public license v3",
 	"",
-	"please send suggestions and bug reports to ",
-	PACKAGE_BUGREPORT,
-	"",
 	PACKAGE_URL
 };
 
diff --git a/configure b/configure
index a1b606f..ecd5c55 100755
--- a/configure
+++ b/configure
@@ -1,8 +1,8 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for wavemon 0.8.0.
+# Generated by GNU Autoconf 2.69 for wavemon 0.8.2.
 #
-# Report bugs to <gerrit@erg.abdn.ac.uk>.
+# Report bugs to <https://github.com/uoaerg/wavemon>.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -267,10 +267,10 @@ fi
     $as_echo "$0: be upgraded to zsh 4.3.4 or later."
   else
     $as_echo "$0: Please tell bug-autoconf@gnu.org and
-$0: gerrit@erg.abdn.ac.uk about your system, including any
-$0: error possibly output before this message. Then install
-$0: a modern shell, or manually run the script under such a
-$0: shell if you do have one."
+$0: https://github.com/uoaerg/wavemon about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
   fi
   exit 1
 fi
@@ -580,9 +580,9 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='wavemon'
 PACKAGE_TARNAME='wavemon-current'
-PACKAGE_VERSION='0.8.0'
-PACKAGE_STRING='wavemon 0.8.0'
-PACKAGE_BUGREPORT='gerrit@erg.abdn.ac.uk'
+PACKAGE_VERSION='0.8.2'
+PACKAGE_STRING='wavemon 0.8.2'
+PACKAGE_BUGREPORT='https://github.com/uoaerg/wavemon'
 PACKAGE_URL='https://github.com/uoaerg/wavemon'
 
 # Factoring default headers for most tests.
@@ -1249,7 +1249,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures wavemon 0.8.0 to adapt to many kinds of systems.
+\`configure' configures wavemon 0.8.2 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1314,7 +1314,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of wavemon 0.8.0:";;
+     short | recursive ) echo "Configuration of wavemon 0.8.2:";;
    esac
   cat <<\_ACEOF
 
@@ -1343,7 +1343,7 @@ Some influential environment variables:
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
-Report bugs to <gerrit@erg.abdn.ac.uk>.
+Report bugs to <https://github.com/uoaerg/wavemon>.
 wavemon home page: <https://github.com/uoaerg/wavemon>.
 _ACEOF
 ac_status=$?
@@ -1407,7 +1407,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-wavemon configure 0.8.0
+wavemon configure 0.8.2
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1608,9 +1608,9 @@ $as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
 $as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
 $as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-( $as_echo "## ------------------------------------ ##
-## Report this to gerrit@erg.abdn.ac.uk ##
-## ------------------------------------ ##"
+( $as_echo "## ------------------------------------------------ ##
+## Report this to https://github.com/uoaerg/wavemon ##
+## ------------------------------------------------ ##"
      ) | sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
@@ -1830,7 +1830,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by wavemon $as_me 0.8.0, which was
+It was created by wavemon $as_me 0.8.2, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -4955,7 +4955,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by wavemon $as_me 0.8.0, which was
+This file was extended by wavemon $as_me 0.8.2, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -5002,14 +5002,14 @@ Usage: $0 [OPTION]... [TAG]...
 Configuration files:
 $config_files
 
-Report bugs to <gerrit@erg.abdn.ac.uk>.
+Report bugs to <https://github.com/uoaerg/wavemon>.
 wavemon home page: <https://github.com/uoaerg/wavemon>."
 
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-wavemon config.status 0.8.0
+wavemon config.status 0.8.2
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 7132dea..323b96c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.64)
-AC_INIT([wavemon], [0.8.0], [gerrit@erg.abdn.ac.uk], [wavemon-current],
+AC_INIT([wavemon], [0.8.2], [https://github.com/uoaerg/wavemon], [wavemon-current],
 	[https://github.com/uoaerg/wavemon])
 
 
diff --git a/info_scr.c b/info_scr.c
index 55a3bbc..86095fa 100644
--- a/info_scr.c
+++ b/info_scr.c
@@ -53,6 +53,7 @@ static void *sampling_loop(void *arg)
 
 void sampling_init(void)
 {
+	pthread_mutex_init(&linkstat.mutex, NULL);
 	linkstat.run = true;
 	pthread_create(&sampling_thread, NULL, sampling_loop, NULL);
 }
@@ -61,6 +62,7 @@ void sampling_stop(void)
 {
 	linkstat.run = false;
 	pthread_join(sampling_thread, NULL);
+	pthread_mutex_destroy(&linkstat.mutex);
 }
 
 static void display_levels(void)
@@ -78,7 +80,6 @@ static void display_levels(void)
 	bool noise_data_valid;
 	int sig_qual = -1, sig_qual_max, sig_level;
 
-
 	noise_data_valid = iw_nl80211_have_survey_data(&linkstat.data);
 	sig_level = linkstat.data.signal_avg ?: linkstat.data.signal;
 
@@ -103,12 +104,6 @@ static void display_levels(void)
 		sig_qual_max = 70;
 	}
 
-	if (sig_qual == -1 && !sig_level && !noise_data_valid) {
-		wattron(w_levels, A_BOLD);
-		waddstr_center(w_levels, (WH_LEVEL + 1)/2, "NO INTERFACE DATA");
-		goto done_levels;
-	}
-
 	line = 1;
 
 	/* Noise data is rare. Use the space for spreading out. */
@@ -173,7 +168,6 @@ static void display_levels(void)
 		waddstr_b(w_levels, tmp);
 	}
 
-done_levels:
 	wrefresh(w_levels);
 }
 
@@ -211,7 +205,8 @@ static void display_stats(void)
 
 	if (linkstat.data.rx_drop_misc) {
 		waddstr(w_stats, ", drop: ");
-		sprintf(tmp, "%'llu", (unsigned long long)linkstat.data.rx_drop_misc);
+		sprintf(tmp, "%'llu (%.1f%%)", (unsigned long long)linkstat.data.rx_drop_misc,
+				(1e2 * linkstat.data.rx_drop_misc)/linkstat.data.rx_packets);
 		waddstr_b(w_stats, tmp);
 	}
 
@@ -237,7 +232,8 @@ static void display_stats(void)
 
 	if (linkstat.data.tx_retries) {
 		waddstr(w_stats, ", retries: ");
-		sprintf(tmp, "%'u", linkstat.data.tx_retries);
+		sprintf(tmp, "%'u (%.1f%%)", linkstat.data.tx_retries,
+			(1e2 * linkstat.data.tx_retries)/linkstat.data.tx_packets);
 		waddstr_b(w_stats, tmp);
 	}
 
@@ -257,10 +253,9 @@ static void display_info(WINDOW *w_if, WINDOW *w_info)
 	struct iw_nl80211_ifstat ifs;
 	struct iw_nl80211_reg ir;
 	char tmp[0x100];
-	int i;
 
 	iw_getinf_range(conf_ifname(), &range);
-	dyn_info_get(&info, conf_ifname(), &range);
+	dyn_info_get(&info, conf_ifname());
 	iw_nl80211_getifstat(&ifs);
 	iw_nl80211_getreg(&ir);
 
@@ -530,63 +525,11 @@ static void display_info(WINDOW *w_if, WINDOW *w_info)
 	}
 	wclrtoborder(w_info);
 
+	/* FIXME: re-enable encryption information (issue #8)
 	wmove(w_info, 7, 1);
 	waddstr(w_info, "encryption: ");
-	if (info.keys) {
-		int cnt = dyn_info_active_keys(&info);
-
-		if (cnt == 0) {
-			waddstr_b(w_info, "off (no key set)");
-		} else if (info.active_key) {
-			i = info.active_key - 1;
-			waddstr_b(w_info, curtail(format_key(info.keys + i),
-					  "..", MAXXLEN/2));
-
-			if (info.keys[i].flags & IW_ENCODE_RESTRICTED)
-				waddstr(w_info, ", restricted");
-			if (info.keys[i].flags & IW_ENCODE_OPEN)
-				waddstr(w_info, ", open");
-
-			/* First key = default */
-			if (cnt > 1 || info.active_key != 1) {
-				sprintf(tmp, " [%d]", info.active_key);
-				waddstr_b(w_info, tmp);
-			}
-			if (cnt > 1) {
-				sprintf(tmp, " (%d other key%s)", cnt - 1,
-					cnt == 2 ? "" : "s");
-				waddstr(w_info, tmp);
-			}
-		} else  if (dyn_info_wep_keys(&info) == cnt) {
-			waddstr_b(w_info, "off ");
-			sprintf(tmp, "(%d disabled WEP key%s)", cnt,
-				cnt == 1 ? "" : "s");
-			waddstr(w_info, tmp);
-		} else {
-			uint8_t j = 0, k = 0;
-
-			do  if (info.keys[j].size &&
-				!(info.keys[j].flags & IW_ENCODE_DISABLED))
-					info.keys[k++].size = info.keys[j].size;
-			while (k < cnt && ++j < info.nkeys);
-
-			if (cnt == 1)
-				j = sprintf(tmp, "1 key (index #%u), ", j + 1);
-			else
-				j = sprintf(tmp, "%d keys with ", k);
-			for (i = 0; i < k; i++)
-				j += sprintf(tmp + j, "%s%d",	i ? "/" : "",
-					     info.keys[i].size * 8);
-			sprintf(tmp + j, " bits");
-			waddstr_b(w_info, tmp);
-		}
-	} else if (has_net_admin_capability()) {
-		waddstr(w_info, "no information available");
-	} else {
-		waddstr(w_info, "n/a (requires CAP_NET_ADMIN permissions)");
-	}
+	*/
 
-	dyn_info_cleanup(&info);
 	wclrtoborder(w_info);
 	wrefresh(w_info);
 }
diff --git a/iw_if.c b/iw_if.c
index ca7d3c5..72de7b1 100644
--- a/iw_if.c
+++ b/iw_if.c
@@ -154,11 +154,10 @@ void iw_get_interface_list(char** if_list, size_t max_entries)
  * @ifname: interface name
  * @if:	    range information to use (number of encryption keys)
  */
-void dyn_info_get(struct iw_dyn_info *info,
-		  const char *ifname, struct iw_range *ir)
+void dyn_info_get(struct iw_dyn_info *info, const char *ifname)
 {
 	struct iwreq iwr;
-	int i, skfd = socket(AF_INET, SOCK_DGRAM, 0);
+	int skfd = socket(AF_INET, SOCK_DGRAM, 0);
 
 	if (skfd < 0)
 		err_sys("%s: can not open socket", __func__);
@@ -230,43 +229,6 @@ void dyn_info_get(struct iw_dyn_info *info,
 		info->mode     = iwr.u.mode;
 	}
 
-	info->nkeys = ir->max_encoding_tokens;
-	if (info->nkeys) {
-		info->keys = calloc(info->nkeys, sizeof(*info->keys));
-		if (info->keys == NULL)
-			err_sys("malloc(key array)");
-
-		/* Get index of default key first */
-		iwr.u.data.pointer = info->keys[0].key;
-		iwr.u.data.length  = sizeof(info->keys[0].key);
-		iwr.u.data.flags   = 0;
-		if (ioctl(skfd, SIOCGIWENCODE, &iwr) < 0) {
-			free(info->keys);
-			info->keys  = NULL;
-			info->nkeys = 0;
-		} else {
-			info->active_key = iwr.u.data.flags & IW_ENCODE_INDEX;
-		}
-	}
-	/* If successful, populate the key array */
-	for (i = 0; i < info->nkeys; i++) {
-		iwr.u.data.pointer = info->keys[i].key;
-		iwr.u.data.length  = sizeof(info->keys->key);
-		iwr.u.data.flags   = i + 1;	/* counts 1..n instead of 0..n-1 */
-		if (ioctl(skfd, SIOCGIWENCODE, &iwr) < 0) {
-			free(info->keys);
-			info->nkeys = 0;
-			break;
-		}
-		info->keys[i].size  = iwr.u.data.length;
-		info->keys[i].flags = iwr.u.data.flags;
-
-		/* Validate whether the current key is indeed active */
-		if (i + 1 == info->active_key && (info->keys[i].size == 0 ||
-		    (info->keys[i].flags & IW_ENCODE_DISABLED)))
-			info->active_key = 0;
-	}
-
 	if (ioctl(skfd, SIOCGIWAP, &iwr) >= 0) {
 		info->cap_ap = 1;
 		memcpy(&info->ap_addr, &iwr.u.ap_addr, sizeof(struct sockaddr));
@@ -274,13 +236,6 @@ void dyn_info_get(struct iw_dyn_info *info,
 	close(skfd);
 }
 
-void dyn_info_cleanup(struct iw_dyn_info *info)
-{
-	if (info)
-		free(info->keys);
-}
-
-
 /*
  * Request range information for a given wireless interface.
  * @ifname: name of the wireless argument
diff --git a/iw_if.h b/iw_if.h
index 846e9f9..1d4e238 100644
--- a/iw_if.h
+++ b/iw_if.h
@@ -148,37 +148,9 @@ struct iw_dyn_info {
 	float		freq;
 	int32_t		sens;
 	unsigned long	bitrate;
-
-	struct iw_key	*keys;
-	uint8_t		nkeys;
-	uint8_t		active_key;
 };
 
-/* Return the number of encryption keys marked 'active' in @info */
-static inline uint8_t dyn_info_active_keys(struct iw_dyn_info *info)
-{
-	int i, num_active = 0;
-
-	for (i = 0; i < info->nkeys; i++)
-		num_active += info->keys[i].size &&
-			      !(info->keys[i].flags & IW_ENCODE_DISABLED);
-	return num_active;
-}
-
-/* Return the number of 40-bit/104-bit keys in @info */
-static inline uint8_t dyn_info_wep_keys(struct iw_dyn_info *info)
-{
-	int i, num_wep = 0;
-
-	for (i = 0; i < info->nkeys; i++)
-		if (!(info->keys[i].flags & IW_ENCODE_DISABLED))
-			num_wep += info->keys[i].size == 5 ||
-				   info->keys[i].size == 13;
-	return num_wep;
-}
-extern void dyn_info_get(struct iw_dyn_info *info,
-			 const char *ifname, struct iw_range *ir);
-extern void dyn_info_cleanup(struct iw_dyn_info *info);
+extern void dyn_info_get(struct iw_dyn_info *info, const char *ifname);
 
 
 /*
@@ -278,8 +250,8 @@ struct scan_result {
 	pthread_mutex_t   mutex;
 };
 
-extern void scan_result_init(struct scan_result *sr);
-extern void scan_result_fini(struct scan_result *sr);
+extern void init_scan_list(struct scan_result *sr);
+extern void free_scan_list(struct scan_entry *head);
 extern void *do_scan(void *sr_ptr);
 
 /*
diff --git a/iw_nl80211.c b/iw_nl80211.c
index 5b9c562..339e58b 100644
--- a/iw_nl80211.c
+++ b/iw_nl80211.c
@@ -128,7 +128,7 @@ void parse_bitrate(struct nlattr *bitrate_attr, char *buf, int buflen)
 		rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
 	if (rate > 0)
 		pos += snprintf(pos, buflen - (pos - buf),
-				"%d.%d MBit/s", rate / 10, rate % 10);
+				"%d.%d Mbit/s", rate / 10, rate % 10);
 
 	if (rinfo[NL80211_RATE_INFO_MCS])
 		pos += snprintf(pos, buflen - (pos - buf),
diff --git a/iw_scan.c b/iw_scan.c
index 6426f68..2748376 100644
--- a/iw_scan.c
+++ b/iw_scan.c
@@ -105,7 +105,7 @@ static int wait_event(struct nl_msg *msg, void *arg)
  * Returns true if scan results are available, false if scan was aborted.
  * Taken from iw:event.c:__do_listen_events
  */
-static bool wait_for_scan_events(struct scan_result *sr)
+static bool wait_for_scan_events(void)
 {
 	static const uint32_t cmds[] = {
 		NL80211_CMD_NEW_SCAN_RESULTS,
@@ -293,7 +293,8 @@ void sort_scan_list(struct scan_entry **headp)
 	*headp = head;
 }
 
-static void free_scan_list(struct scan_entry *head)
+/** De-allocate list. Use after all threads are terminated. */
+void free_scan_list(struct scan_entry *head)
 {
 	if (head) {
 		free_scan_list(head->next);
@@ -301,9 +302,9 @@ static void free_scan_list(struct scan_entry *head)
 	}
 }
 
-static void clear_scan_list(struct scan_result *sr)
+/** Initialize scan results. Requires lock to be taken. */
+void init_scan_list(struct scan_result *sr)
 {
-	pthread_mutex_lock(&sr->mutex);
 	free_scan_list(sr->head);
 	free(sr->channel_stats);
 	sr->head          = NULL;
@@ -311,7 +312,7 @@ static void clear_scan_list(struct scan_result *sr)
 	sr->msg[0]        = '\0';
 	sr->max_essid_len = MAX_ESSID_LEN;
 	memset(&(sr->num), 0, sizeof(sr->num));
-	pthread_mutex_unlock(&sr->mutex);
+	sr->mutex = (pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER;
 }
 
 /*
@@ -366,28 +367,6 @@ static void compute_channel_stats(struct scan_result *sr)
 	sr->num.ch_stats = n < MAX_CH_STATS ? n : MAX_CH_STATS;
 }
 
-/*
- *	Scan results.
- */
-void scan_result_init(struct scan_result *sr)
-{
-	pthread_mutexattr_t ma;
-
-	memset(sr, 0, sizeof(*sr));
-	pthread_mutexattr_init(&ma);
-	if (pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST) < 0)
-		err_sys("Failed to set the mutex robust attribute");
-	pthread_mutex_init(&sr->mutex, &ma);
-}
-
-void scan_result_fini(struct scan_result *sr)
-{
-	/* FIXME: this may have a bug on resource de-allocation, if the main thread still holds the lock */
-	free_scan_list(sr->head);
-	free(sr->channel_stats);
-	pthread_mutex_destroy(&sr->mutex);
-}
-
 /** The actual scan thread. */
 void *do_scan(void *sr_ptr)
 {
@@ -402,15 +381,21 @@ void *do_scan(void *sr_ptr)
 
 	pthread_detach(pthread_self());
 	do {
-		clear_scan_list(sr);
-
 		ret = iw_nl80211_scan_trigger();
+
+		pthread_mutex_lock(&sr->mutex);
+		init_scan_list(sr);
 		switch(-ret) {
 		case 0:
 		case EBUSY:
 			/* Trigger returns -EBUSY if a scan request is pending or ready. */
-			if (!wait_for_scan_events(sr)) {
+			pthread_mutex_unlock(&sr->mutex);
+
+			/* Do not hold the lock while awaiting results. */
+			if (!wait_for_scan_events()) {
+				pthread_mutex_lock(&sr->mutex);
 				snprintf(sr->msg, sizeof(sr->msg), "Waiting for scan data...");
+				pthread_mutex_unlock(&sr->mutex);
 			} else {
 				pthread_mutex_lock(&sr->mutex);
 				ret = iw_nl80211_get_scan_data(sr);
@@ -426,8 +411,8 @@ void *do_scan(void *sr_ptr)
 			break;
 		case EPERM:
 			if (!has_net_admin_capability())
-				snprintf(sr->msg, sizeof(sr->msg),
-					 "This screen requires CAP_NET_ADMIN permissions");
+				snprintf(sr->msg, sizeof(sr->msg), "This screen requires CAP_NET_ADMIN permissions");
+			pthread_mutex_unlock(&sr->mutex);
 			return NULL;
 		case EFAULT:
 			/* EFAULT can occur after a window resizing event: temporary, fall through. */
@@ -435,18 +420,21 @@ void *do_scan(void *sr_ptr)
 		case EAGAIN:
 			/* Temporary errors. */
 			snprintf(sr->msg, sizeof(sr->msg), "Waiting for device to become ready ...");
+			pthread_mutex_unlock(&sr->mutex);
 			break;
 		case ENETDOWN:
 			if (!if_is_up(conf_ifname())) {
 				snprintf(sr->msg, sizeof(sr->msg), "Interface %s is down - setting it up ...", conf_ifname());
+				pthread_mutex_unlock(&sr->mutex);
+
 				if (if_set_up(conf_ifname()) < 0)
 					err_sys("Can not bring up interface '%s'", conf_ifname());
 				break;
 			}
 			/* fall through */
 		default:
-			snprintf(sr->msg, sizeof(sr->msg),
-				 "Scan trigger failed on %s: %s", conf_ifname(), strerror(-ret));
+			snprintf(sr->msg, sizeof(sr->msg), "Scan trigger failed on %s: %s", conf_ifname(), strerror(-ret));
+			pthread_mutex_unlock(&sr->mutex);
 		}
 	} while (usleep(conf.stat_iv * 1000) == 0);
 
diff --git a/scan_scr.c b/scan_scr.c
index 6373b6a..51d0285 100644
--- a/scan_scr.c
+++ b/scan_scr.c
@@ -203,7 +203,7 @@ void scr_aplst_init(void)
 	mvwaddstr(w_aplst, START_LINE, 1, "Waiting for scan data ...");
 	wrefresh(w_aplst);
 
-	scan_result_init(&sr);
+	init_scan_list(&sr);
 	pthread_create(&scan_thread, NULL, do_scan, &sr);
 }
 
@@ -251,6 +251,8 @@ int scr_aplst_loop(WINDOW *w_menu)
 void scr_aplst_fini(void)
 {
 	pthread_cancel(scan_thread);
-	scan_result_fini(&sr);
+	free_scan_list(sr.head);
+	free(sr.channel_stats);
+
 	delwin(w_aplst);
 }
diff --git a/wavemon.h b/wavemon.h
index ee0cff4..16580f7 100644
--- a/wavemon.h
+++ b/wavemon.h
@@ -51,7 +51,7 @@ enum info_screen_geometry {
 	WH_IFACE    = 2,	/* 'Interface' area at the top */
 	WH_LEVEL    = 9,	/* Level meters */
 	WH_STATS    = 3,	/* WiFi statistics area */
-	WH_INFO_MIN = 8,	/* WiFi information area */
+	WH_INFO_MIN = 7,	/* WiFi information area */
 	WH_NET_MIN  = 3,	/* Network interface information area */
 	WH_NET_MAX  = 5,	/* Network interface information area */
 	WH_MENU	    = 1		/* Menu bar at the bottom */