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libiwinfo: support scanning on radioX pseudo interfaces

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This commit is contained in:
Jo-Philipp Wich 2010-10-12 06:25:50 +00:00
parent 551224f51c
commit 62fe7c0e77
2 changed files with 106 additions and 0 deletions
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105
contrib/package/iwinfo/src/iwinfo_nl80211.c
View file

@ -385,6 +385,93 @@ out:
return rv;
}
static char * nl80211_phy2ifname(const char *ifname)
{
int fd, phyidx = 0;
char buffer[64];
static char nif[IFNAMSIZ] = { 0 };
DIR *d;
struct dirent *e;
if( !strncmp(ifname, "radio", 5) )
{
phyidx = atoi(&ifname[5]);
if( (d = opendir("/sys/class/net")) != NULL )
{
while( (e = readdir(d)) != NULL )
{
snprintf(buffer, sizeof(buffer),
"/sys/class/net/%s/phy80211/index", e->d_name);
if( (fd = open(buffer, O_RDONLY)) > 0 )
{
if( (read(fd, buffer, sizeof(buffer)) > 0) &&
(atoi(buffer) == phyidx) )
{
strncpy(nif, e->d_name, sizeof(nif));
}
close(fd);
}
if( nif[0] )
break;
}
closedir(d);
}
}
return nif[0] ? nif : NULL;
}
static char * nl80211_add_tempif(const char *ifname)
{
int phyidx;
char *rv = NULL;
static char nif[IFNAMSIZ] = { 0 };
struct nl80211_msg_conveyor *req, *res;
req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
if( req )
{
snprintf(nif, sizeof(nif), "tmp.%s", ifname);
NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
res = nl80211_send(req);
if( res )
{
rv = nif;
nl80211_free(res);
}
nla_put_failure:
nl80211_free(req);
}
return rv;
}
static void nl80211_del_tempif(const char *ifname)
{
struct nl80211_msg_conveyor *req, *res;
req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
if( req )
{
NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
nl80211_free(nl80211_send(req));
nla_put_failure:
nl80211_free(req);
}
}
int nl80211_probe(const char *ifname)
{
@ -1058,6 +1145,24 @@ int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
char bssid[18] = { 0 };
char cipher[256] = { 0 };
/* Got a radioX pseudo interface, find some interface on it or create one */
if( !strncmp(ifname, "radio", 5) )
{
/* Reuse existing interface */
if( (res = nl80211_phy2ifname(ifname)) != NULL )
{
return nl80211_get_scanlist(res, buf, len);
}
/* Need to spawn a temporary iface for scanning */
else if( (res = nl80211_add_tempif(ifname)) != NULL )
{
count = nl80211_get_scanlist(res, buf, len);
nl80211_del_tempif(res);
return count;
}
}
struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
/* WPA supplicant */

1
contrib/package/iwinfo/src/iwinfo_nl80211.h
View file

@ -23,6 +23,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <net/if.h>