From: Jo-Philipp Wich <jow@openwrt.org>
Date: Sat, 5 Feb 2011 18:20:48 +0000 (+0000)
Subject: libiwinfo: fix integer overflow in dbm to mw conversion, also allow odd dbm numbers
X-Git-Tag: 0.11.0~2293
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=59992443bc0bc57b9601940824cbe1f285be07b9;p=oweals%2Fluci.git

libiwinfo: fix integer overflow in dbm to mw conversion, also allow odd dbm numbers
---

diff --git a/contrib/package/iwinfo/src/iwinfo.h b/contrib/package/iwinfo/src/iwinfo.h
index a9889bd9f..aa2f8335a 100644
--- a/contrib/package/iwinfo/src/iwinfo.h
+++ b/contrib/package/iwinfo/src/iwinfo.h
@@ -64,8 +64,8 @@ struct iwinfo_assoclist_entry {
 };
 
 struct iwinfo_txpwrlist_entry {
-	uint8_t	dbm;
-	uint8_t	mw;
+	uint8_t  dbm;
+	uint16_t mw;
 };
 
 struct iwinfo_freqlist_entry {
diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.c b/contrib/package/iwinfo/src/iwinfo_nl80211.c
index fa714e906..0f57d37f1 100644
--- a/contrib/package/iwinfo/src/iwinfo_nl80211.c
+++ b/contrib/package/iwinfo/src/iwinfo_nl80211.c
@@ -1170,7 +1170,7 @@ int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
 	{
 		for( dbm_cur = 0, dbm_cnt = 0;
 		     dbm_cur < dbm_max;
-		     dbm_cur += 2, dbm_cnt++ )
+		     dbm_cur++, dbm_cnt++ )
 		{
 			entry.dbm = dbm_cur;
 			entry.mw  = iwinfo_dbm2mw(dbm_cur);