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https://github.com/fastfetch-cli/fastfetch.git
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李通洲
29 lines
776 B
C
29 lines
776 B
C
#include "netif.h"
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#include "common/io/io.h"
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#include <net/if.h>
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#include <stdio.h>
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#define FF_STR_INDIR(x) #x
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#define FF_STR(x) FF_STR_INDIR(x)
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bool ffNetifGetDefaultRouteImpl(char iface[IF_NAMESIZE + 1], uint32_t* ifIndex)
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{
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FILE* FF_AUTO_CLOSE_FILE netRoute = fopen("/proc/net/route", "r");
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if (!netRoute) return false;
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// skip first line
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flockfile(netRoute);
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while (getc_unlocked(netRoute) != '\n');
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funlockfile(netRoute);
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unsigned long long destination; //, gateway, flags, refCount, use, metric, mask, mtu,
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while (fscanf(netRoute, "%" FF_STR(IF_NAMESIZE) "s%llx%*[^\n]", iface, &destination) == 2)
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{
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if (destination != 0) continue;
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*ifIndex = if_nametoindex(iface);
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return true;
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}
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return false;
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}
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