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#include <unistd.h>
#include <sys/socket.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/if.h>
#include <libdaemon/dlog.h>
#include "util.h"
struct hw_addr null_ap = { { 0, 0, 0, 0, 0, 0 } };
void print_hex(FILE *f, uint8_t *w, int l) {
while (l > 0) {
fprintf(f, "%02x", *(w++));
l--;
}
}
int hw_addr_equal(struct hw_addr *a, struct hw_addr *b) {
return memcmp(a->addr, b->addr, ETH_ALEN) == 0;
}
int is_assoc_ap(struct hw_addr *ap) {
int b, j;
b = 1;
assert(ap);
for (j = 1; j < ETH_ALEN; j++)
if (ap->addr[j] != ap->addr[0]) {
b = 0;
break;
}
return !b || (ap->addr[0] != 0xFF && ap->addr[0] != 0x44 && ap->addr[0] != 0x00);
}
void print_hw_addr(FILE*f, struct hw_addr *a) {
fprintf(f, "%02x:%02x:%02x:%02x:%02x:%02x",
a->addr[0], a->addr[1], a->addr[2],
a->addr[3], a->addr[4], a->addr[5]);
}
void snprint_hw_addr(char *c, int l, struct hw_addr *a) {
snprintf(c, l, "%02x:%02x:%02x:%02x:%02x:%02x",
a->addr[0], a->addr[1], a->addr[2],
a->addr[3], a->addr[4], a->addr[5]);
}
int parse_hex(char *s, uint8_t *b, int l) {
int n = 0;
char *p;
int nibble = 0;
for (p = s; *p && l >= 0; p++) {
int c;
if (*p >= '0' && *p <= '9')
c = *p - '0';
else if (*p >= 'A' && *p <= 'F')
c = *p - 'A' + 10;
else if (*p >= 'a' && *p <= 'f')
c = *p - 'a' + 10;
else if (*p == ':' || *p == '.')
continue;
else
return -(p-s)-1;
if (!nibble)
*b = c << 4;
else {
*b |= c & 15;
b++;
l--;
n++;
}
nibble = !nibble;
}
if (*p)
return -(p-s)-1;
return n;
}
int get_ifname(int idx, char *p, int l) {
struct ifreq req;
int s;
if ((s = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
daemon_log(LOG_ERR, "socket() failed: %s\n", strerror(errno));
return -1;
}
memset(&req, 0, sizeof(req));
req.ifr_ifindex = idx;
if(ioctl(s, SIOCGIFNAME, &req) < 0) {
close(s);
daemon_log(LOG_ERR, "SIOCGIFNAME failed: %s\n", strerror(errno));
return -1;
}
close(s);
strncpy(p, req.ifr_name, l-1);
p[l-1] = 0;
return 0;
}
int is_iface_available(char *p) {
struct ifreq req;
int s, r;
if ((s = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
daemon_log(LOG_ERR, "socket() failed: %s\n", strerror(errno));
return -1;
}
memset(&req, 0, sizeof(req));
strncpy(req.ifr_name, p, IFNAMSIZ);
if ((r = ioctl(s, SIOCGIFINDEX, &req)) < 0 && errno != ENODEV) {
daemon_log(LOG_ERR, "SIOCGIFINDEX failed: %s\n", strerror(errno));
return -1;
}
close(s);
return r >= 0 && req.ifr_ifindex >= 0;
}
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