<pre lang="cs"> #include "pcap.h" main() { pcap_if_t *alldevs; pcap_if_t *d; int i=0; char errbuf[PCAP_ERRBUF_SIZE]; /* Retrieve the device list from the local machine */ if (pcap_findalldevs_ex(PCAP_SRC_IF_STRING, NULL /* auth is not needed */, &alldevs, errbuf) == -1) { fprintf(stderr,"Error in pcap_findalldevs_ex: %s\n", errbuf); exit(1); } /* Print the list */ for(d= alldevs; d != NULL; d= d->next) { printf("%d. %s", ++i, d->name); if (d->description) printf(" (%s)\n", d->description); else printf(" (No description available)\n"); } if (i == 0) { printf("\nNo interfaces found! Make sure WinPcap is installed.\n"); return; } /* We don't need any more the device list. Free it */ pcap_freealldevs(alldevs); }
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