void dhcp_handler (void *unused, int event)
{
switch (event) {
case BDHCPCLIENT_EVENT_UP: {
printf("DHCP: up");
uint32_t ip;
uint8_t *ipb = (void *)&ip;
BDHCPClient_GetClientIP(&dhcp, &ip);
printf(" IP=%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8, ipb[0], ipb[1], ipb[2], ipb[3]);
BDHCPClient_GetClientMask(&dhcp, &ip);
printf(" Mask=%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8, ipb[0], ipb[1], ipb[2], ipb[3]);
if (BDHCPClient_GetRouter(&dhcp, &ip)) {
printf(" Router=%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8, ipb[0], ipb[1], ipb[2], ipb[3]);
}
uint32_t dns[BDHCPCLIENT_MAX_DOMAIN_NAME_SERVERS];
int num = BDHCPClient_GetDNS(&dhcp, dns, BDHCPCLIENT_MAX_DOMAIN_NAME_SERVERS);
for (int i = 0; i < num; i++) {
ip=dns[i];
printf(" DNS=%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8, ipb[0], ipb[1], ipb[2], ipb[3]);
}
printf("\n");
} break;
case BDHCPCLIENT_EVENT_DOWN: {
printf("DHCP: down\n");
} break;
case BDHCPCLIENT_EVENT_ERROR: {
printf("DHCP: error\n");
// exit reactor
BReactor_Quit(&reactor, 0);
} break;
default:
ASSERT(0);
}
}
static int func_getvar (void *vo, const char *name, NCDValMem *mem, NCDValRef *out)
{
struct instance *o = vo;
ASSERT(o->up)
if (!strcmp(name, "addr")) {
uint32_t addr;
BDHCPClient_GetClientIP(&o->dhcp, &addr);
char str[IPADDR_PRINT_MAX];
ipaddr_print_addr(addr, str);
*out = NCDVal_NewString(mem, str);
return 1;
}
if (!strcmp(name, "prefix")) {
uint32_t addr;
BDHCPClient_GetClientIP(&o->dhcp, &addr);
uint32_t mask;
BDHCPClient_GetClientMask(&o->dhcp, &mask);
struct ipv4_ifaddr ifaddr;
if (!ipaddr_ipv4_ifaddr_from_addr_mask(addr, mask, &ifaddr)) {
ModuleLog(o->i, BLOG_ERROR, "bad netmask");
return 0;
}
char str[10];
sprintf(str, "%d", ifaddr.prefix);
*out = NCDVal_NewString(mem, str);
return 1;
}
if (!strcmp(name, "cidr_addr")) {
uint32_t addr;
BDHCPClient_GetClientIP(&o->dhcp, &addr);
uint32_t mask;
BDHCPClient_GetClientMask(&o->dhcp, &mask);
struct ipv4_ifaddr ifaddr;
if (!ipaddr_ipv4_ifaddr_from_addr_mask(addr, mask, &ifaddr)) {
ModuleLog(o->i, BLOG_ERROR, "bad netmask");
return 0;
}
char str[IPADDR_PRINT_MAX];
ipaddr_print_ifaddr(ifaddr, str);
*out = NCDVal_NewString(mem, str);
return 1;
}
if (!strcmp(name, "gateway")) {
char str[IPADDR_PRINT_MAX];
uint32_t addr;
if (!BDHCPClient_GetRouter(&o->dhcp, &addr)) {
strcpy(str, "none");
} else {
ipaddr_print_addr(addr, str);
}
*out = NCDVal_NewString(mem, str);
return 1;
}
if (!strcmp(name, "dns_servers")) {
uint32_t servers[BDHCPCLIENT_MAX_DOMAIN_NAME_SERVERS];
int num_servers = BDHCPClient_GetDNS(&o->dhcp, servers, BDHCPCLIENT_MAX_DOMAIN_NAME_SERVERS);
*out = NCDVal_NewList(mem, num_servers);
if (NCDVal_IsInvalid(*out)) {
goto fail;
}
for (int i = 0; i < num_servers; i++) {
char str[IPADDR_PRINT_MAX];
ipaddr_print_addr(servers[i], str);
NCDValRef server = NCDVal_NewString(mem, str);
if (NCDVal_IsInvalid(server)) {
goto fail;
}
if (!NCDVal_ListAppend(*out, server)) {
goto fail;
}
}
return 1;
}
if (!strcmp(name, "server_mac")) {
uint8_t mac[6];
BDHCPClient_GetServerMAC(&o->dhcp, mac);
char str[18];
sprintf(str, "%02"PRIX8":%02"PRIX8":%02"PRIX8":%02"PRIX8":%02"PRIX8":%02"PRIX8,
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
*out = NCDVal_NewString(mem, str);
return 1;
}
return 0;
fail:
*out = NCDVal_NewInvalid();
return 1;
}
