/*
* This is used for user output only, so it does not matter when an error occurs.
*/
const char *pdnsd_a2str(pdnsd_a *a, char *buf, int maxlen)
{
const char *res= SEL_IPVER( inet_ntop(AF_INET,&a->ipv4,buf,maxlen),
inet_ntop(AF_INET6,&a->ipv6,buf,maxlen) );
if (!res) {
log_error("inet_ntop: %s", strerror(errno));
return "?.?.?.?";
}
return res;
}
int is_local_addr(pdnsd_a *a)
{
int retval=0, sock, cnt;
struct ifconf ifc;
char buf[2048];
if ((sock=socket(PF_INET,SOCK_DGRAM, IPPROTO_UDP))==-1) {
if(++socketopen_errs<=MAX_SOCKETOPEN_ERRS) {
log_warn("Could not open socket in is_local_addr(): %s",strerror(errno));
}
return 0;
}
ifc.ifc_len=sizeof(buf);
ifc.ifc_buf=buf;
if (ioctl(sock,SIOCGIFCONF,&ifc)==-1) {
if(++siocgifconf_errs<=MAX_SIOCGIFCONF_ERRS) {
log_warn("ioctl() call with request SIOCGIFCONF failed in is_local_addr(): %s",strerror(errno));
}
goto close_sock_return;
}
cnt=0;
while(cnt+sizeof(struct ifreq)<=ifc.ifc_len) {
struct ifreq *ir= (struct ifreq *)(buf+cnt);
cnt += SIZEOF_ADDR_IFREQ(*ir);
if (cnt>ifc.ifc_len)
break;
if (SEL_IPVER(ir->ifr_addr.sa_family==AF_INET &&
((struct sockaddr_in *)&ir->ifr_addr)->sin_addr.s_addr==a->ipv4.s_addr,
ir->ifr_addr.sa_family==AF_INET6 &&
IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)&ir->ifr_addr)->sin6_addr,
&a->ipv6)))
{
retval=1;
break;
}
}
close_sock_return:
close(sock);
return retval;
}
/* Report the current configuration to the file descriptor f (for the status fifo, see status.c) */
int report_conf_stat(int f)
{
int i,n,retval=0;
fsprintf_or_return(f,"\nConfiguration:\n==============\nGlobal:\n-------\n");
fsprintf_or_return(f,"\tCache size: %li kB\n",global.perm_cache);
fsprintf_or_return(f,"\tServer directory: %s\n",global.cache_dir);
fsprintf_or_return(f,"\tScheme file (for Linux pcmcia support): %s\n",global.scheme_file);
fsprintf_or_return(f,"\tServer port: %i\n",global.port);
{
char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tServer IP (%s=any available one): %s\n", SEL_IPVER("0.0.0.0","::"),
pdnsd_a2str(&global.a,buf,ADDRSTR_MAXLEN));
if(!is_inaddr_any(&global.out_a)) {
fsprintf_or_return(f,"\tIP bound to interface used for querying remote servers: %s\n",
pdnsd_a2str(&global.out_a,buf,ADDRSTR_MAXLEN));
}
}
#ifdef ENABLE_IPV6
if(!run_ipv4) {
char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tIPv4 to IPv6 prefix: %s\n",inet_ntop(AF_INET6,&global.ipv4_6_prefix,buf,ADDRSTR_MAXLEN)?:"?.?.?.?");
}
int is_inaddr_any(pdnsd_a *a)
{
return SEL_IPVER( a->ipv4.s_addr==INADDR_ANY,
IN6_IS_ADDR_UNSPECIFIED(&a->ipv6) );
}
int is_local_addr(pdnsd_a *a)
{
int retval=0, sock, cnt;
# ifdef WIN32
INTERFACE_INFO ifo[26];
DWORD ifo_len;
# else
struct ifconf ifc;
char buf[2048];
# endif
if ((sock=socket(PF_INET,SOCK_DGRAM, IPPROTO_UDP))==-1) {
if(++socketopen_errs<=MAX_SOCKETOPEN_ERRS) {
# ifdef WIN32
log_warn("Could not open socket in is_local_addr(): %d",WSAGetLastError());
# else
log_warn("Could not open socket in is_local_addr(): %s",strerror(errno));
# endif
}
return 0;
}
# ifdef WIN32
if ((WSAIoctl(sock,SIO_GET_INTERFACE_LIST,
NULL,0,
ifo,sizeof(ifo),
&ifo_len, NULL, NULL))!=0) {
if(++siocgifconf_errs<=MAX_SIOCGIFCONF_ERRS) {
log_warn("(WSAIoctl() call with request SIOCGIFCONF failed in is_local_addr(): %s",strerror(errno));
}
goto close_sock_return;
}
for (cnt = 0; cnt<(int)(ifo_len/sizeof(INTERFACE_INFO)); cnt++) {
if (SEL_IPVER(ifo[cnt].iiAddress.Address.sa_family==AF_INET &&
ifo[cnt].iiAddress.AddressIn.sin_addr.s_addr==a->ipv4.s_addr,
ifo[cnt].iiAddress.Address.sa_family==AF_INET6 &&
IN6_ARE_ADDR_EQUAL(&ifo[cnt].iiAddress.AddressIn6.sin6_addr,
&a->ipv6)))
{
retval=1;
break;
}
}
# else
ifc.ifc_len=sizeof(buf);
ifc.ifc_buf=buf;
if (ioctl(sock,SIOCGIFCONF,&ifc)==-1) {
if(++siocgifconf_errs<=MAX_SIOCGIFCONF_ERRS) {
log_warn("ioctl() call with request SIOCGIFCONF failed in is_local_addr(): %s",strerror(errno));
}
goto close_sock_return;
}
cnt=0;
while(cnt+sizeof(struct ifreq)<=ifc.ifc_len) {
struct ifreq *ir= (struct ifreq *)(buf+cnt);
cnt += SIZEOF_ADDR_IFREQ(*ir);
if (cnt>ifc.ifc_len)
break;
if (SEL_IPVER(ir->ifr_addr.sa_family==AF_INET &&
((struct sockaddr_in *)&ir->ifr_addr)->sin_addr.s_addr==a->ipv4.s_addr,
ir->ifr_addr.sa_family==AF_INET6 &&
IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)&ir->ifr_addr)->sin6_addr,
&a->ipv6)))
{
retval=1;
break;
}
}
# endif
close_sock_return:
# ifdef WIN32
closesocket(sock);
# else
close(sock);
# endif
return retval;
}
