/*
* Enumerate devices and call specified routine
* The new way just use /proc/net/wireless, so get all wireless interfaces,
* whether configured or not. This is the default if available.
* The old way use SIOCGIFCONF, so get only configured interfaces (wireless
* or not).
*/
void
iw_enum_devices(int skfd,
iw_enum_handler fn,
char * args[],
int count)
{
char buff[1024];
FILE * fh;
struct ifconf ifc;
struct ifreq *ifr;
int i;
#ifndef IW_RESTRIC_ENUM
/* Check if /proc/net/wireless is available */
fh = fopen(PROC_NET_DEV, "r");
#else
/* Check if /proc/net/wireless is available */
fh = fopen(PROC_NET_WIRELESS, "r");
#endif
if(fh != NULL)
{
/* Success : use data from /proc/net/wireless */
/* Eat 2 lines of header */
fgets(buff, sizeof(buff), fh);
fgets(buff, sizeof(buff), fh);
/* Read each device line */
while(fgets(buff, sizeof(buff), fh))
{
char name[IFNAMSIZ + 1];
char *s;
/* Extract interface name */
s = iw_get_ifname(name, sizeof(name), buff);
if(!s)
/* Failed to parse, complain and continue */
#ifndef IW_RESTRIC_ENUM
fprintf(stderr, "Cannot parse " PROC_NET_DEV "\n");
#else
fprintf(stderr, "Cannot parse " PROC_NET_WIRELESS "\n");
#endif
else
/* Got it, print info about this interface */
(*fn)(skfd, name, args, count);
}
/*
* Enumerate devices and call specified routine
* The new way just use /proc/net/wireless, so get all wireless interfaces,
* whether configured or not. This is the default if available.
* The old way use SIOCGIFCONF, so get only configured interfaces (wireless
* or not).
*/
void
iw_enum_devices(int skfd,
iw_enum_handler fn,
char * args[],
int count)
{
char buff[1024];
FILE * fh;
struct ifconf ifc;
struct ifreq *ifr;
int i;
#ifndef IW_RESTRIC_ENUM
/* Check if /proc/net/dev is available */
fh = fopen(PROC_NET_DEV, "r");
#else
/* Check if /proc/net/wireless is available */
fh = fopen(PROC_NET_WIRELESS, "r");
#endif
if(fh != NULL)
{
/* Success : use data from /proc/net/wireless */
/* Eat 2 lines of header */
fgets(buff, sizeof(buff), fh);
fgets(buff, sizeof(buff), fh);
/* Read each device line */
while(fgets(buff, sizeof(buff), fh))
{
char name[IFNAMSIZ + 1];
char *s;
/* Skip empty or almost empty lines. It seems that in some
* cases fgets return a line with only a newline. */
if((buff[0] == '\0') || (buff[1] == '\0'))
continue;
/* Extract interface name */
s = iw_get_ifname(name, sizeof(name), buff);
if(!s)
{
/* Failed to parse, complain and continue */
#ifndef IW_RESTRIC_ENUM
fprintf(stderr, "Cannot parse " PROC_NET_DEV "\n");
#else
fprintf(stderr, "Cannot parse " PROC_NET_WIRELESS "\n");
#endif
}
else
/* Got it, print info about this interface */
(*fn)(skfd, name, args, count);
}
fclose(fh);
}
else
{
/* Get list of configured devices using "traditional" way */
ifc.ifc_len = sizeof(buff);
ifc.ifc_buf = buff;
if(ioctl(skfd, SIOCGIFCONF, &ifc) < 0)
{
fprintf(stderr, "SIOCGIFCONF: %s\n", strerror(errno));
return;
}
ifr = ifc.ifc_req;
/* Print them */
for(i = ifc.ifc_len / sizeof(struct ifreq); --i >= 0; ifr++)
(*fn)(skfd, ifr->ifr_name, args, count);
}
}
