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authorJo-Philipp Wich <jow@openwrt.org>2014-08-24 21:42:26 +0000
committerJo-Philipp Wich <jow@openwrt.org>2014-08-24 21:42:26 +0000
commit9d2bdd8585ef755f68c6c769ed7c260507ea33c4 (patch)
treeb6814dad6b77d9d3079b9ff1c70af551e656b9f9
parent823659f458637665ebb91bcf25fae22e4ab74d6b (diff)
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iwinfo: properly decode SSIDs when scanning through wpa_supplicant
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org> SVN-Revision: 42273
-rw-r--r--package/network/utils/iwinfo/Makefile2
-rw-r--r--package/network/utils/iwinfo/src/iwinfo_nl80211.c65
2 files changed, 63 insertions, 4 deletions
diff --git a/package/network/utils/iwinfo/Makefile b/package/network/utils/iwinfo/Makefile
index e4ee73a112..db46bbc07d 100644
--- a/package/network/utils/iwinfo/Makefile
+++ b/package/network/utils/iwinfo/Makefile
@@ -7,7 +7,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=libiwinfo
-PKG_RELEASE:=50
+PKG_RELEASE:=51
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
PKG_CONFIG_DEPENDS := \
diff --git a/package/network/utils/iwinfo/src/iwinfo_nl80211.c b/package/network/utils/iwinfo/src/iwinfo_nl80211.c
index 33c62387e3..7711b61102 100644
--- a/package/network/utils/iwinfo/src/iwinfo_nl80211.c
+++ b/package/network/utils/iwinfo/src/iwinfo_nl80211.c
@@ -1881,11 +1881,70 @@ static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
return *len ? 0 : -1;
}
+static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
+{
+#define hex(x) \
+ (((x) >= 'a') ? ((x) - 'a' + 10) : \
+ (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
+
+ int len = 0;
+
+ while (*in)
+ {
+ if (len + 1 >= outlen)
+ break;
+
+ switch (*in)
+ {
+ case '\\':
+ in++;
+ switch (*in)
+ {
+ case 'n':
+ out[len++] = '\n'; in++;
+ break;
+
+ case 'r':
+ out[len++] = '\r'; in++;
+ break;
+
+ case 't':
+ out[len++] = '\t'; in++;
+ break;
+
+ case 'e':
+ out[len++] = '\e'; in++;
+ break;
+
+ case 'x':
+ if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
+ out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
+ in += 3;
+ break;
+
+ default:
+ out[len++] = *in++;
+ break;
+ }
+ break;
+
+ default:
+ out[len++] = *in++;
+ break;
+ }
+ }
+
+ if (outlen > len)
+ out[len] = '\0';
+
+ return len;
+}
+
static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
{
int freq, rssi, qmax, count, mode;
char *res;
- char ssid[128] = { 0 };
+ char ssid[129] = { 0 };
char bssid[18] = { 0 };
char cipher[256] = { 0 };
@@ -1930,7 +1989,7 @@ static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
count++;
goto nextline;
}
- if (sscanf(res, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
+ if (sscanf(res, "%17s %d %d %255s%*[ \t]%128[^\n]\n",
bssid, &freq, &rssi, cipher, ssid) < 5)
{
/* skip malformed lines */
@@ -1945,7 +2004,7 @@ static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
e->mac[5] = strtol(&bssid[15], NULL, 16);
/* SSID */
- memcpy(e->ssid, ssid, min(strlen(ssid), sizeof(e->ssid) - 1));
+ wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
/* Mode (assume master) */
if (strstr(cipher,"[MESH]"))