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// vim:ts=4:sw=4:expandtab
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <yajl/yajl_gen.h>
#include <yajl/yajl_version.h>
#include "i3status.h"
#if defined(LINUX)
#include <linux/ethtool.h>
#include <linux/sockios.h>
#define PART_ETHSPEED "E: %s (%d Mbit/s)"
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#include <net/if_media.h>
#define PART_ETHSPEED "E: %s (%s)"
#endif
#if defined(__OpenBSD__) || defined(__NetBSD__)
#include <errno.h>
#include <net/if_media.h>
#endif
static int print_eth_speed(char *outwalk, const char *interface) {
#if defined(LINUX)
/* This code path requires root privileges */
int ethspeed = 0;
struct ifreq ifr;
struct ethtool_cmd ecmd;
ecmd.cmd = ETHTOOL_GSET;
(void)memset(&ifr, 0, sizeof(ifr));
ifr.ifr_data = (caddr_t)&ecmd;
(void)strcpy(ifr.ifr_name, interface);
if (ioctl(general_socket, SIOCETHTOOL, &ifr) == 0) {
ethspeed = (ecmd.speed == USHRT_MAX ? 0 : ecmd.speed);
return sprintf(outwalk, "%d Mbit/s", ethspeed);
} else
return sprintf(outwalk, "?");
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
const char *ethspeed;
struct ifmediareq ifm;
(void)memset(&ifm, 0, sizeof(ifm));
(void)strncpy(ifm.ifm_name, interface, sizeof(ifm.ifm_name));
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;
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 (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__)
const char *ethspeed;
struct ifmediareq ifmr;
(void)memset(&ifmr, 0, sizeof(ifmr));
(void)strlcpy(ifmr.ifm_name, interface, sizeof(ifmr.ifm_name));
if (ioctl(general_socket, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
if (errno != E2BIG)
return sprintf(outwalk, "?");
}
struct ifmedia_description *desc;
struct ifmedia_description ifm_subtype_descriptions[] =
IFM_SUBTYPE_DESCRIPTIONS;
for (desc = ifm_subtype_descriptions; desc->ifmt_string != NULL; desc++) {
/*
* Skip these non-informative values and go right ahead to the
* actual speeds.
*/
if (BEGINS_WITH(desc->ifmt_string, "autoselect") ||
BEGINS_WITH(desc->ifmt_string, "auto"))
continue;
if (IFM_TYPE_MATCH(desc->ifmt_word, ifmr.ifm_active) &&
IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(ifmr.ifm_active))
break;
}
ethspeed = (desc->ifmt_string != NULL ? desc->ifmt_string : "?");
return sprintf(outwalk, "%s", ethspeed);
#else
return sprintf(outwalk, "?");
#endif
}
/*
* 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;
char *outwalk = buffer;
INSTANCE(interface);
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';
}
}
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;
continue;
}
if (BEGINS_WITH(walk + 1, "ip")) {
outwalk += sprintf(outwalk, "%s", ip_address);
walk += strlen("ip");
} else if (BEGINS_WITH(walk + 1, "speed")) {
outwalk += print_eth_speed(outwalk, interface);
walk += strlen("speed");
}
}
out:
END_COLOR;
free(ipv4_address);
free(ipv6_address);
OUTPUT_FULL_TEXT(buffer);
}
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