void conf_interfaces(FILE *output, char *only)
{
FILE *dhcpif, *llfile;
int ifs, flags, ippntd, br;
#define LLPREFIX "/var/run/lladdr"
char leasefile[sizeof(LEASEPREFIX)+1+IFNAMSIZ];
char *lladdr, llorig[IFNAMSIZ];
char llfn[sizeof(LLPREFIX)+IFNAMSIZ];
char ifdescr[IFDESCRSIZE];
struct if_nameindex *ifn_list, *ifnp;
struct ifreq ifr, ifrdesc;
struct if_data if_data;
struct vlanreq vreq;
if ((ifn_list = if_nameindex()) == NULL) {
printf("%% conf_interfaces: if_nameindex failed\n");
return;
}
if ((ifs = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
printf("%% conf_interfaces socket: %s\n", strerror(errno));
if_freenameindex(ifn_list);
return;
}
for (ifnp = ifn_list; ifnp->if_name != NULL; ifnp++) {
strlcpy(ifr.ifr_name, ifnp->if_name, sizeof(ifr.ifr_name));
if (only && !isprefix(only, ifnp->if_name))
/* only display interfaces which start with ... */
continue;
if (!only) {
/* interface prefixes to exclude on generic run */
if (isprefix("pfsync", ifnp->if_name))
continue;
}
if (ioctl(ifs, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% conf: SIOCGIFFLAGS: %s\n", strerror(errno));
continue;
}
flags = ifr.ifr_flags;
ifr.ifr_data = (caddr_t)&if_data;
if (ioctl(ifs, SIOCGIFDATA, (caddr_t)&ifr) < 0) {
printf("%% conf: SIOCGIFDATA: %s\n", strerror(errno));
continue;
}
/*
* Keep in mind that the order in which things are displayed
* here is important. For instance, we want to setup the
* vlan tag before setting the IP address since the vlan
* must know what parent to inherit the parent interface
* flags from before it is brought up. Another example of
* this would be that we need to setup the members on a
* bridge before we setup flags on them.
*/
/*
* set interface/bridge mode
*/
if (!(br = is_bridge(ifs, ifnp->if_name)))
br = 0;
fprintf(output, "%s %s\n", br ? "bridge" : "interface",
ifnp->if_name);
/*
* description, if available
* copied straight from ifconfig.c
*/
memset(&ifrdesc, 0, sizeof(ifrdesc));
strlcpy(ifrdesc.ifr_name, ifnp->if_name,
sizeof(ifrdesc.ifr_name));
ifrdesc.ifr_data = (caddr_t)&ifdescr;
if (ioctl(ifs, SIOCGIFDESCR, &ifrdesc) == 0 &&
strlen(ifrdesc.ifr_data))
fprintf(output, " description %s\n", ifrdesc.ifr_data);
/*
* print lladdr if necessary
*/
if ((lladdr = get_hwdaddr(ifnp->if_name)) != NULL) {
/* We assume lladdr only useful if we can get_hwdaddr */
snprintf(llfn, sizeof(llfn), "%s.%s", LLPREFIX,
ifnp->if_name);
if ((llfile = fopen(llfn, "r"))) {
fgets(llorig, sizeof(llorig), llfile);
if (strcmp(llorig, lladdr) != 0) {
fprintf(output, " lladdr %s\n",
lladdr);
}
fclose(llfile);
}
}
/*
* print vlan tag, parent if available. if a tag is set
* but there is no parent, discard.
*/
bzero(&vreq, sizeof(struct vlanreq));
ifr.ifr_data = (caddr_t)&vreq;
if (ioctl(ifs, SIOCGETVLAN, (caddr_t)&ifr) != -1) {
struct vlanreq preq;
bzero(&preq, sizeof(struct vlanreq));
ifr.ifr_data = (caddr_t)&preq;
ioctl(ifs, SIOCGETVLANPRIO, (caddr_t)&ifr);
if(vreq.vlr_tag && (vreq.vlr_parent[0] != '\0')) {
fprintf(output, " vlan %d parent %s",
vreq.vlr_tag, vreq.vlr_parent);
if(preq.vlr_tag > 0)
fprintf(output, " priority %d",
preq.vlr_tag);
fprintf(output, "\n");
}
}
conf_intrtlabel(output, ifs, ifnp->if_name);
conf_intgroup(output, ifs, ifnp->if_name);
snprintf(leasefile, sizeof(leasefile), "%s.%s",
LEASEPREFIX, ifnp->if_name);
if ((dhcpif = fopen(leasefile, "r"))) {
fprintf(output, " ip dhcp\n");
fclose(dhcpif);
ippntd = 1;
} else {
ippntd = conf_ifaddrs(output, ifnp->if_name, flags);
}
if (br) {
conf_brcfg(output, ifs, ifn_list, ifnp->if_name);
} else {
char tmp[24];
conf_media_status(output, ifs, ifnp->if_name);
conf_ifmetrics(output, ifs, if_data, ifnp->if_name);
conf_pfsync(output, ifs, ifnp->if_name);
conf_carp(output, ifs, ifnp->if_name);
conf_trunk(output, ifs, ifnp->if_name);
if (timeslot_status(ifs, ifnp->if_name, tmp,
sizeof(tmp)) == 1)
fprintf(output, " timeslots %s\n", tmp);
if (conf_dhcrelay(ifnp->if_name, tmp, sizeof(tmp))
!= NULL)
fprintf(output, " dhcrelay %s\n", tmp);
}
/*
* print various flags
*/
if (flags & IFF_DEBUG)
fprintf(output, " debug\n");
if (flags & (IFF_LINK0|IFF_LINK1|IFF_LINK2)) {
fprintf(output, " link ");
if(flags & IFF_LINK0)
fprintf(output, "0 ");
if(flags & IFF_LINK1)
fprintf(output, "1 ");
if(flags & IFF_LINK2)
fprintf(output, "2");
fprintf(output, "\n");
}
if (flags & IFF_NOARP)
fprintf(output, " no arp\n");
/*
* ip X/Y turns the interface up (just like 'no shutdown')
* ...but if we never had an ip address set and the interface
* is up, we need to save this state explicitly.
*/
if (!ippntd && (flags & IFF_UP))
fprintf(output, " no shutdown\n");
else if (!(flags & IFF_UP))
fprintf(output, " shutdown\n");
fprintf(output, "!\n");
}
close(ifs);
if_freenameindex(ifn_list);
}
void conf_interfaces(FILE *output, char *only)
{
int ifs, flags, ippntd, br;
char *lladdr;
char ifdescr[IFDESCRSIZE];
struct if_nameindex *ifn_list, *ifnp;
struct ifreq ifr, ifrdesc;
struct if_data if_data;
if ((ifn_list = if_nameindex()) == NULL) {
printf("%% conf_interfaces: if_nameindex failed\n");
return;
}
if ((ifs = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
printf("%% conf_interfaces socket: %s\n", strerror(errno));
if_freenameindex(ifn_list);
return;
}
for (ifnp = ifn_list; ifnp->if_name != NULL; ifnp++) {
if (only && !isprefix(only, ifnp->if_name))
/* only display interfaces which start with ... */
continue;
if (!only && islateif(ifnp->if_name))
/* interface prefixes to exclude on generic run */
continue;
strlcpy(ifr.ifr_name, ifnp->if_name, sizeof(ifr.ifr_name));
if (ioctl(ifs, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% conf: SIOCGIFFLAGS: %s\n", strerror(errno));
continue;
}
flags = ifr.ifr_flags;
ifr.ifr_data = (caddr_t)&if_data;
if (ioctl(ifs, SIOCGIFDATA, (caddr_t)&ifr) < 0) {
printf("%% conf: SIOCGIFDATA: %s\n", strerror(errno));
continue;
}
/* The output order is important! */
/* set interface/bridge mode */
if (!(br = is_bridge(ifs, ifnp->if_name)))
br = 0;
fprintf(output, "%s %s\n", br ? "bridge" : "interface",
ifnp->if_name);
/*
* description, if available
* copied straight from ifconfig.c
*/
memset(&ifrdesc, 0, sizeof(ifrdesc));
strlcpy(ifrdesc.ifr_name, ifnp->if_name,
sizeof(ifrdesc.ifr_name));
ifrdesc.ifr_data = (caddr_t)&ifdescr;
if (ioctl(ifs, SIOCGIFDESCR, &ifrdesc) == 0 &&
strlen(ifrdesc.ifr_data))
fprintf(output, " description %s\n", ifrdesc.ifr_data);
if ((lladdr = get_hwdaddr(ifnp->if_name)) != NULL)
conf_db_single(output, "lladdr", lladdr, ifnp->if_name);
conf_db_single(output, "rtadvd", NULL, ifnp->if_name);
conf_vnetid(output, ifs, ifnp->if_name);
conf_parent(output, ifs, ifnp->if_name);
conf_rdomain(output, ifs, ifnp->if_name);
conf_intrtlabel(output, ifs, ifnp->if_name);
conf_intgroup(output, ifs, ifnp->if_name);
conf_carp(output, ifs, ifnp->if_name);
ippntd = conf_ifaddr_dhcp(output, ifnp->if_name, flags);
if (br) {
conf_brcfg(output, ifs, ifn_list, ifnp->if_name);
} else {
char tmp[24];
conf_media_status(output, ifs, ifnp->if_name);
conf_ifmetrics(output, ifs, if_data, ifnp->if_name);
conf_keepalive(output, ifs, ifnp->if_name);
conf_pfsync(output, ifs, ifnp->if_name);
conf_trunk(output, ifs, ifnp->if_name);
conf_pflow(output, ifs, ifnp->if_name);
conf_ifxflags(output, ifs, ifnp->if_name);
if (timeslot_status(ifs, ifnp->if_name, tmp,
sizeof(tmp)) == 1)
fprintf(output, " timeslots %s\n", tmp);
if (conf_dhcrelay(ifnp->if_name, tmp, sizeof(tmp))
> 0)
fprintf(output, " dhcrelay %s\n", tmp);
conf_sppp(output, ifs, ifnp->if_name);
conf_pppoe(output, ifs, ifnp->if_name);
}
conf_ifflags(output, flags, ifnp->if_name, ippntd);
}
close(ifs);
if_freenameindex(ifn_list);
}