int fd = xsocket(AF_INET, SOCK_RAW, IPPROTO_RAW);
req.ifr_addr.sa_family = AF_INET;
- strncpy(req.ifr_name, interface, IFNAMSIZ);
+ xstrncpy(req.ifr_name, interface, IFNAMSIZ);
req.ifr_name[IFNAMSIZ-1] = '\0';
xioctl(fd, SIOCGIFFLAGS, &req);
close(state->sockfd);
return -1;
}
- strncpy(ifr.ifr_name, state->iface, IFNAMSIZ);
+ xstrncpy(ifr.ifr_name, state->iface, IFNAMSIZ);
ifr.ifr_name[IFNAMSIZ -1] = '\0';
setsockopt(state->sockfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr));
}
// adds hostname to dhcp packet.
-static uint8_t *dhcpc_addfdnname(uint8_t *optptr, char *hname)
+static uint8_t *dhcpc_addfdnname(uint8_t *optptr, char *hname)
{
int size = strlen(hname);
+
*optptr++ = DHCP_OPTION_FQDN;
*optptr++ = size + 3;
*optptr++ = 0x1; //flags
optptr += 2; // two blank bytes
- strncpy((char*)optptr, hname, size); // name
+ strcpy((char*)optptr, hname); // name
+
return optptr + size;
}