X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Ffirst_network_device.c;h=4e680069290b9120f6d493baf78c4d62851a6cef;hb=e09186fa19c82f2899d4f1559970ea3421c7618d;hp=16f23e07702f4f42ab031987adbacfccf38b035d;hpb=3e14e6e5f3a50f670024e4204f2c0cf15f05b199;p=i3%2Fi3status

diff --git a/src/first_network_device.c b/src/first_network_device.c
index 16f23e0..4e68006 100644
--- a/src/first_network_device.c
+++ b/src/first_network_device.c
@@ -1,15 +1,120 @@
 // vim:ts=4:sw=4:expandtab
+#include <sys/socket.h>
 #include <sys/stat.h>
 #include <stdlib.h>
 #include <ifaddrs.h>
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/sockio.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <net80211/ieee80211.h>
+#include <net80211/ieee80211_ioctl.h>
+#endif
 
 #include "i3status.h"
 
+#ifdef __linux__
+#define LOOPBACK_DEV "lo"
+#else
+#define LOOPBACK_DEV "lo0"
+#endif
+
+static bool sysfs_devtype(char *dest, size_t n, const char *ifnam) {
+    FILE *fp;
+    char buf[1024];
+
+    snprintf(buf, sizeof(buf), "/sys/class/net/%s/uevent", ifnam);
+    if ((fp = fopen(buf, "r")) == NULL)
+        return false;
+
+    dest[0] = '\0';
+
+    while (fgets(buf, sizeof(buf), fp)) {
+        size_t slen;
+        char *s;
+
+        slen = strlen(buf);
+        /* Line is too long to fit in the buffer */
+        if (buf[slen - 1] != '\n' && !feof(fp))
+            break;
+        if ((s = strchr(buf, '='))) {
+            if (strncmp(buf, "DEVTYPE", s - buf))
+                continue;
+            buf[slen - 1] = '\0';
+            strncpy(dest, ++s, n);
+            break;
+        }
+    }
+    fclose(fp);
+    return true;
+}
+
+static net_type_t iface_type(const char *ifname) {
+#ifdef __linux__
+    char devtype[32];
+
+    if (!sysfs_devtype(devtype, sizeof(devtype), ifname))
+        return NET_TYPE_OTHER;
+
+    if (!devtype[0])
+        return NET_TYPE_ETHERNET;
+
+    if (strcmp(devtype, "wlan") == 0)
+        return NET_TYPE_WIRELESS;
+
+    if (strcmp(devtype, "wwan") == 0)
+        return NET_TYPE_OTHER;
+
+    return NET_TYPE_OTHER;
+#elif __OpenBSD__
+    /*
+     *First determine if the device is a wireless device by trying two ioctl(2)
+     * commands against it. If either succeeds we can be sure it's a wireless
+     * device.
+     * Otherwise we try another ioctl(2) to determine the interface media. If that
+     * fails it's not an ethernet device eiter.
+     */
+    struct ifreq ifr;
+    struct ieee80211_bssid bssid;
+    struct ieee80211_nwid nwid;
+    struct ifmediareq ifmr;
+
+    int s, ibssid, inwid;
+
+    if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+        return NET_TYPE_OTHER;
+
+    memset(&ifr, 0, sizeof(ifr));
+    ifr.ifr_data = (caddr_t)&nwid;
+    (void)strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+    inwid = ioctl(s, SIOCG80211NWID, (caddr_t)&ifr);
+
+    memset(&bssid, 0, sizeof(bssid));
+    strlcpy(bssid.i_name, ifname, sizeof(bssid.i_name));
+    ibssid = ioctl(s, SIOCG80211BSSID, &bssid);
+
+    if (ibssid == 0 || inwid == 0)
+        return NET_TYPE_WIRELESS;
+
+    (void)memset(&ifmr, 0, sizeof(ifmr));
+    (void)strlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
+
+    if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
+        return NET_TYPE_OTHER;
+    else
+        return NET_TYPE_ETHERNET;
+
+    close(s);
+#else
+#error Missing implementation to determine interface type.
+#endif
+}
+
 const char *first_eth_interface(const net_type_t type) {
     static char *interface = NULL;
     struct ifaddrs *ifaddr, *addrp;
-    struct stat stbuf;
-    static char path[1024];
+    net_type_t iftype;
 
     getifaddrs(&ifaddr);
 
@@ -21,20 +126,23 @@ const char *first_eth_interface(const net_type_t type) {
     for (addrp = ifaddr;
          addrp != NULL;
          addrp = addrp->ifa_next) {
-        if (strncasecmp("lo", addrp->ifa_name, strlen("lo")) == 0)
+        if (strncasecmp(LOOPBACK_DEV, addrp->ifa_name, strlen(LOOPBACK_DEV)) == 0)
             continue;
         if (addrp->ifa_addr == NULL)
             continue;
+#ifdef __OpenBSD__
+        if (addrp->ifa_addr->sa_family != AF_LINK)
+            continue;
+#else
         // Skip PF_PACKET addresses (MAC addresses), as they are present on any
         // ethernet interface.
         if (addrp->ifa_addr->sa_family != AF_INET &&
             addrp->ifa_addr->sa_family != AF_INET6)
             continue;
+#endif /* !__OpenBSD__ */
         // Skip this interface if it is a wireless interface.
-        snprintf(path, sizeof(path), "/sys/class/net/%s/wireless", addrp->ifa_name);
-        const bool is_wireless = (stat(path, &stbuf) == 0);
-        if ((is_wireless && type == NET_TYPE_ETHERNET) ||
-            (!is_wireless && type == NET_TYPE_WIRELESS))
+        iftype = iface_type(addrp->ifa_name);
+        if (iftype != type)
             continue;
         interface = strdup(addrp->ifa_name);
         break;