mirror of
https://github.com/Waujito/youtubeUnblock.git
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53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
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/* simple test for index to interface name API */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <net/if.h>
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#include <libnfnetlink/libnfnetlink.h>
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int main(int argc, char *argv[])
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{
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int idx;
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struct nlif_handle *h;
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char name[IFNAMSIZ];
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unsigned int flags;
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <interface>\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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h = nlif_open();
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if (h == NULL) {
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perror("nlif_open");
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exit(EXIT_FAILURE);
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}
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if (nlif_query(h) == -1) {
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fprintf(stderr, "failed query to retrieve interfaces: %s\n",
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strerror(errno));
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exit(EXIT_FAILURE);
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}
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idx = if_nametoindex(argv[1]);
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/* Superfluous: just to make sure nlif_index2name is working fine */
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if (nlif_index2name(h, idx, name) == -1)
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fprintf(stderr, "Cannot translate device idx=%u\n", idx);
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if (nlif_get_ifflags(h, idx, &flags) == -1) {
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fprintf(stderr, "Cannot get flags for device `%s'\n", argv[1]);
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exit(EXIT_FAILURE);
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}
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printf("index (%d) is %s (%s) (%s)\n", idx, argv[1],
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flags & IFF_RUNNING ? "RUNNING" : "NOT RUNNING",
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flags & IFF_UP ? "UP" : "DOWN");
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nlif_close(h);
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return EXIT_SUCCESS;
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}
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