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iwinfo: properly decode SSIDs when scanning through wpa_supplicant

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Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

SVN-Revision: 42273
This commit is contained in:
Jo-Philipp Wich 2014-08-24 21:42:26 +00:00
parent 823659f458
commit 9d2bdd8585
2 changed files with 63 additions and 4 deletions
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2
package/network/utils/iwinfo/Makefile
View file

@ -7,7 +7,7 @@
include $(TOPDIR)/rules.mk include $(TOPDIR)/rules.mk
PKG_NAME:=libiwinfo PKG_NAME:=libiwinfo
PKG_RELEASE:=50 PKG_RELEASE:=51
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
PKG_CONFIG_DEPENDS := \ PKG_CONFIG_DEPENDS := \

65
package/network/utils/iwinfo/src/iwinfo_nl80211.c
View file

@ -1881,11 +1881,70 @@ static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
return *len ? 0 : -1; 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) static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
{ {
int freq, rssi, qmax, count, mode; int freq, rssi, qmax, count, mode;
char *res; char *res;
char ssid[128] = { 0 }; char ssid[129] = { 0 };
char bssid[18] = { 0 }; char bssid[18] = { 0 };
char cipher[256] = { 0 }; char cipher[256] = { 0 };
@ -1930,7 +1989,7 @@ static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
count++; count++;
goto nextline; 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) bssid, &freq, &rssi, cipher, ssid) < 5)
{ {
/* skip malformed lines */ /* 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); e->mac[5] = strtol(&bssid[15], NULL, 16);
/* SSID */ /* SSID */
memcpy(e->ssid, ssid, min(strlen(ssid), sizeof(e->ssid) - 1)); wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
/* Mode (assume master) */ /* Mode (assume master) */
if (strstr(cipher,"[MESH]")) if (strstr(cipher,"[MESH]"))