dev: Add device string convertions (addr, dev type)

Move device string convertions funcs (device_type2str, device_addr2str)
from proto_nlmsg.c to dev.c to use them in other modules.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[ dbkm: minor stylistic fixes ]
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 182 insertions, 0 deletions

diff --git a/dev.c b/dev.c
index 2b3a7a5..a29b4c1 100644
--- a/dev.c
+++ b/dev.c
@@ -5,6 +5,7 @@
 #include <sys/socket.h>
 #include <linux/if_arp.h>
 #include <ifaddrs.h>
+#include <arpa/inet.h>
 
 #include "dev.h"
 #include "str.h"
@@ -221,3 +222,184 @@ void device_leave_promiscuous_mode(const char *ifname, short oldflags)
 
 	device_set_flags(ifname, oldflags);
 }
+
+const char *device_type2str(uint16_t type)
+{
+	switch (type) {
+	case ARPHRD_ETHER:
+		return "ether";
+	case ARPHRD_EETHER:
+		return "eether";
+	case ARPHRD_AX25:
+		return "ax25";
+	case ARPHRD_PRONET:
+		return "pronet";
+	case ARPHRD_CHAOS:
+		return "chaos";
+	case ARPHRD_IEEE802:
+		return "ieee802";
+	case ARPHRD_ARCNET:
+		return "arcnet";
+	case ARPHRD_APPLETLK:
+		return "appletlk";
+	case ARPHRD_DLCI:
+		return "dlci";
+	case ARPHRD_ATM:
+		return "atm";
+	case ARPHRD_METRICOM:
+		return "metricom";
+	case ARPHRD_IEEE1394:
+		return "ieee1394";
+	case ARPHRD_INFINIBAND:
+		return "infiniband";
+	case ARPHRD_SLIP:
+		return "slip";
+	case ARPHRD_CSLIP:
+		return "cslip";
+	case ARPHRD_SLIP6:
+		return "slip6";
+	case ARPHRD_CSLIP6:
+		return "cslip6";
+	case ARPHRD_RSRVD:
+		return "RSRVD";
+	case ARPHRD_ADAPT:
+		return "adapt";
+	case ARPHRD_ROSE:
+		return "rose";
+	case ARPHRD_X25:
+		return "x25";
+	case ARPHRD_HWX25:
+		return "hwx25";
+	case ARPHRD_CAN:
+		return "can";
+	case ARPHRD_PPP:
+		return "ppp";
+	case ARPHRD_HDLC:
+		return "hdlc";
+	case ARPHRD_LAPB:
+		return "lapb";
+	case ARPHRD_DDCMP:
+		return "ddcmp";
+	case ARPHRD_RAWHDLC:
+		return "rawhdlc";
+	case ARPHRD_TUNNEL:
+		return "tunnel";
+	case ARPHRD_TUNNEL6:
+		return "tunnel6";
+	case ARPHRD_FRAD:
+		return "frad";
+	case ARPHRD_SKIP:
+		return "skip";
+	case ARPHRD_LOOPBACK:
+		return "loopback";
+	case ARPHRD_LOCALTLK:
+		return "localtlk";
+	case ARPHRD_FDDI:
+		return "fddi";
+	case ARPHRD_BIF:
+		return "bif";
+	case ARPHRD_SIT:
+		return "sit";
+	case ARPHRD_IPDDP:
+		return "ipddp";
+	case ARPHRD_IPGRE:
+		return "ipgre";
+	case ARPHRD_PIMREG:
+		return "pimreg";
+	case ARPHRD_HIPPI:
+		return "hippi";
+	case ARPHRD_ASH:
+		return "ash";
+	case ARPHRD_ECONET:
+		return "econet";
+	case ARPHRD_IRDA:
+		return "irda";
+	case ARPHRD_FCPP:
+		return "fcpp";
+	case ARPHRD_FCAL:
+		return "fcal";
+	case ARPHRD_FCPL:
+		return "fcpl";
+	case ARPHRD_FCFABRIC:
+		return "fcfb0";
+	case ARPHRD_FCFABRIC + 1:
+		return "fcfb1";
+	case ARPHRD_FCFABRIC + 2:
+		return "fcfb2";
+	case ARPHRD_FCFABRIC + 3:
+		return "fcfb3";
+	case ARPHRD_FCFABRIC + 4:
+		return "fcfb4";
+	case ARPHRD_FCFABRIC + 5:
+		return "fcfb5";
+	case ARPHRD_FCFABRIC + 6:
+		return "fcfb6";
+	case ARPHRD_FCFABRIC + 7:
+		return "fcfb7";
+	case ARPHRD_FCFABRIC + 8:
+		return "fcfb8";
+	case ARPHRD_FCFABRIC + 9:
+		return "fcfb9";
+	case ARPHRD_FCFABRIC + 10:
+		return "fcfb10";
+	case ARPHRD_FCFABRIC + 11:
+		return "fcfb11";
+	case ARPHRD_FCFABRIC + 12:
+		return "fcfb12";
+	case ARPHRD_IEEE802_TR:
+		return "ieee802_tr";
+	case ARPHRD_IEEE80211:
+		return "ieee80211";
+	case ARPHRD_IEEE80211_PRISM:
+		return "ieee80211_prism";
+	case ARPHRD_IEEE80211_RADIOTAP:
+		return "ieee80211_radiotap";
+	case ARPHRD_IEEE802154:
+		return "ieee802154";
+	case ARPHRD_PHONET:
+		return "phonet";
+	case ARPHRD_PHONET_PIPE:
+		return "phonet_pipe";
+	case ARPHRD_CAIF:
+		return "caif";
+	case ARPHRD_IP6GRE:
+		return "ip6gre";
+	case ARPHRD_NETLINK:
+		return "netlink";
+	case ARPHRD_NONE:
+		return "none";
+	case ARPHRD_VOID:
+		return "void";
+	default:
+		return "Unknown";
+	}
+}
+
+/* Taken from iproute2 ll_addr_n2a func */
+const char *device_addr2str(const char *addr, int alen, int type,
+			    char *buf, int blen)
+{
+	int i, l;
+
+	if (alen == 4 &&
+	    (type == ARPHRD_TUNNEL || type == ARPHRD_SIT ||
+	     type == ARPHRD_IPGRE))
+		return inet_ntop(AF_INET, addr, buf, blen);
+
+	if (alen == 16 && type == ARPHRD_TUNNEL6)
+		return inet_ntop(AF_INET6, addr, buf, blen);
+
+	for (l = 0, i = 0; i < alen; i++) {
+		if (i == 0) {
+			snprintf(buf + l, blen, "%02x", addr[i]);
+			blen -= 2;
+			l += 2;
+		} else {
+			snprintf(buf + l, blen, ":%02x", addr[i]);
+			blen -= 3;
+			l += 3;
+		}
+	}
+
+	return buf;
+}