/* * Copyright (c) 1999 - 2002 * Politecnico di Torino. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the Politecnico * di Torino, and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #include "pcap.h" #ifndef WIN32 #include <sys/socket.h> #include <netinet/in.h> #else #include <winsock.h> #endif void ifprint(pcap_if_t *d); char *iptos(u_long in); int main() { pcap_if_t *alldevs; pcap_if_t *d; char errbuf[PCAP_ERRBUF_SIZE+1]; /* Retrieve the interfaces list */ if (pcap_findalldevs(&alldevs, errbuf) == -1) { fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf); exit(1); } /* Scan the list printing every entry */ for(d=alldevs;d;d=d->next) { ifprint(d); } return 1; } /* Print all the available information on the given interface */ void ifprint(pcap_if_t *d) { pcap_addr_t *a; /* Name */ printf("%s\n",d->name); /* Description */ if (d->description) printf("\tDescription: %s\n",d->description); /* Loopback Address*/ printf("\tLoopback: %s\n",(d->flags & PCAP_IF_LOOPBACK)?"yes":"no"); /* IP addresses */ for(a=d->addresses;a;a=a->next) { printf("\tAddress Family: #%d\n",a->addr->sa_family); switch(a->addr->sa_family) { case AF_INET: printf("\tAddress Family Name: AF_INET\n"); if (a->addr) printf("\tAddress: %s\n",iptos(((struct sockaddr_in *)a->addr)->sin_addr.s_addr)); if (a->netmask) printf("\tNetmask: %s\n",iptos(((struct sockaddr_in *)a->netmask)->sin_addr.s_addr)); if (a->broadaddr) printf("\tBroadcast Address: %s\n",iptos(((struct sockaddr_in *)a->broadaddr)->sin_addr.s_addr)); if (a->dstaddr) printf("\tDestination Address: %s\n",iptos(((struct sockaddr_in *)a->dstaddr)->sin_addr.s_addr)); break; default: printf("\tAddress Family Name: Unknown\n"); break; } } printf("\n"); } /* From tcptraceroute, convert a numeric IP address to a string */ #define IPTOSBUFFERS 12 char *iptos(u_long in) { static char output[IPTOSBUFFERS][3*4+3+1]; static short which; u_char *p; p = (u_char *)∈ which = (which + 1 == IPTOSBUFFERS ? 0 : which + 1); sprintf(output[which], "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); return output[which]; }
documentation. Copyright (c) 2002 Politecnico di Torino. All rights reserved.