#include <string.h>
#include <limits.h>
#include <stdio.h>
+#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#include <net/if_media.h>
-#define IFM_TYPE_MATCH(dt, t) \
- (IFM_TYPE((dt)) == 0 || IFM_TYPE((dt)) == IFM_TYPE((t)))
#define PART_ETHSPEED "E: %s (%s)"
#endif
} else
return sprintf(outwalk, "?");
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
- char *ethspeed;
+ const char *ethspeed;
struct ifmediareq ifm;
(void)memset(&ifm, 0, sizeof(ifm));
(void)strncpy(ifm.ifm_name, interface, sizeof(ifm.ifm_name));
- int ret = ioctl(general_socket, SIOCGIFMEDIA, (caddr_t)&ifm);
+ int ret;
+#ifdef SIOCGIFXMEDIA
+ ret = ioctl(general_socket, SIOCGIFXMEDIA, (caddr_t)&ifm);
+ if (ret < 0)
+#endif
+ ret = ioctl(general_socket, SIOCGIFMEDIA, (caddr_t)&ifm);
+ if (ret < 0)
+ return sprintf(outwalk, "?");
/* Get the description of the media type, partially taken from
* FreeBSD's ifconfig */
const struct ifmedia_description *desc;
- struct ifmedia_description ifm_subtype_descriptions[] =
+ static struct ifmedia_description ifm_subtype_descriptions[] =
IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
+ if (IFM_TYPE(ifm.ifm_active) != IFM_ETHER)
+ return sprintf(outwalk, "?");
+ if (ifm.ifm_status & IFM_AVALID && !(ifm.ifm_status & IFM_ACTIVE))
+ return sprintf(outwalk, "no carrier");
for (desc = ifm_subtype_descriptions;
desc->ifmt_string != NULL;
desc++) {
- if (IFM_TYPE_MATCH(desc->ifmt_word, ifm.ifm_active) &&
- IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(ifm.ifm_active))
+ if (desc->ifmt_word == IFM_SUBTYPE(ifm.ifm_active))
break;
}
ethspeed = (desc->ifmt_string != NULL ? desc->ifmt_string : "?");
return sprintf(outwalk, "%s", ethspeed);
#elif defined(__OpenBSD__) || defined(__NetBSD__)
- char *ethspeed;
+ const char *ethspeed;
struct ifmediareq ifmr;
(void)memset(&ifmr, 0, sizeof(ifmr));
/*
* Combines ethernet IP addresses and speed (if requested) for displaying
*
+ * Table summarizing what is the decision to prefer IPv4 or IPv6
+ * based their values.
+ *
+ * | ipv4_address | ipv6_address | Chosen IP | Color |
+ * |--------------|--------------|-----------|-------------------|
+ * | NULL | NULL | None | bad (red) |
+ * | NULL | no IP | IPv6 | degraded (orange) |
+ * | NULL | ::1/128 | IPv6 | ok (green) |
+ * | no IP | NULL | IPv4 | degraded |
+ * | no IP | no IP | IPv4 | degraded |
+ * | no IP | ::1/128 | IPv6 | ok |
+ * | 127.0.0.1 | NULL | IPv4 | ok |
+ * | 127.0.0.1 | no IP | IPv4 | ok |
+ * | 127.0.0.1 | ::1/128 | IPv4 | ok |
*/
void print_eth_info(yajl_gen json_gen, char *buffer, const char *interface, const char *format_up, const char *format_down) {
const char *walk;
- const char *ip_address = get_ip_addr(interface);
char *outwalk = buffer;
INSTANCE(interface);
- if (ip_address == NULL) {
- START_COLOR("color_bad");
- outwalk += sprintf(outwalk, "%s", format_down);
- goto out;
+ char *ipv4_address = sstrdup(get_ip_addr(interface, AF_INET));
+ char *ipv6_address = sstrdup(get_ip_addr(interface, AF_INET6));
+
+ /*
+ * Removing '%' and following characters from IPv6 since the interface identifier is redundant,
+ * as the output already includes the interface name.
+ */
+ if (ipv6_address != NULL) {
+ char *prct_ptr = strstr(ipv6_address, "%");
+ if (prct_ptr != NULL) {
+ *prct_ptr = '\0';
+ }
}
- START_COLOR("color_good");
+ bool prefer_ipv4 = true;
+ if (ipv4_address == NULL) {
+ if (ipv6_address == NULL) {
+ START_COLOR("color_bad");
+ outwalk += sprintf(outwalk, "%s", format_down);
+ goto out;
+ } else {
+ prefer_ipv4 = false;
+ }
+ } else if (BEGINS_WITH(ipv4_address, "no IP") && ipv6_address != NULL && !BEGINS_WITH(ipv6_address, "no IP")) {
+ prefer_ipv4 = false;
+ }
+ const char *ip_address = (prefer_ipv4) ? ipv4_address : ipv6_address;
+ if (BEGINS_WITH(ip_address, "no IP")) {
+ START_COLOR("color_degraded");
+ } else {
+ START_COLOR("color_good");
+ }
for (walk = format_up; *walk != '\0'; walk++) {
if (*walk != '%') {
*(outwalk++) = *walk;
out:
END_COLOR;
+ free(ipv4_address);
+ free(ipv6_address);
OUTPUT_FULL_TEXT(buffer);
}