/* source: hostan.c */ /* Copyright Gerhard Rieger 2006-2011 */ /* Published under the GNU General Public License V.2, see file COPYING */ /* the subroutine hostan makes a "HOST ANalysis". It gathers information about the host environment it is running in without modifying its state (almost). */ #include "xiosysincludes.h" #include "mytypes.h" #include "compat.h" #include "error.h" #include "sycls.h" #include "sysutils.h" #include "filan.h" #include "hostan.h" static int iffan(FILE *outfile); int hostan(FILE *outfile) { #if _WITH_SOCKET fprintf(outfile, "\nIP INTERFACES\n"); iffan(outfile); #endif return 0; } #if _WITH_SOCKET static int iffan(FILE *outfile) { /* Linux: man 7 netdevice */ /* FreeBSD, NetBSD: man 4 networking */ /* Solaris: man 7 if_tcp */ /* currently we support Linux and a little FreeBSD */ #ifdef SIOCGIFCONF /* not Solaris */ #define IFBUFSIZ 32*sizeof(struct ifreq) /*1024*/ int s; unsigned char buff[IFBUFSIZ]; struct ifconf ic; int i; if ((s = Socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) { Error1("socket(PF_INET, SOCK_DGRAM, IPPROTO_IP): %s", strerror(errno)); return -1; } for (i=0; i < IFBUFSIZ; ++i) { buff[i] = 255; } ic.ifc_len = sizeof(buff); ic.ifc_ifcu.ifcu_buf = (caddr_t)buff; if (Ioctl(s, SIOCGIFCONF, &ic) < 0) { Error3("ioctl(%d, SIOCGIFCONF, %p): %s", s, &ic, strerror(errno)); return -1; } for (i = 0; i < ic.ifc_len; i += sizeof(struct ifreq)) { struct ifreq *ifp = (struct ifreq *)((caddr_t)ic.ifc_req + i); #if 0 || defined(SIOCGIFINDEX) /* not NetBSD, OpenBSD */ struct ifreq ifr; #endif #if 0 || defined(SIOCGIFINDEX) /* not NetBSD, OpenBSD */ strcpy(ifr.ifr_name, ifp->ifr_name); if (Ioctl(s, SIOCGIFINDEX, &ifr) < 0) { Error3("ioctl(%d, SIOCGIFINDEX, {\"%s\"}): %s", s, &ifr.ifr_name, strerror(errno)); return 1; } #if HAVE_STRUCT_IFREQ_IFR_INDEX fprintf(outfile, "%2d: %s\n", ifr.ifr_index, ifp->ifr_name); #elif HAVE_STRUCT_IFREQ_IFR_IFINDEX fprintf(outfile, "%2d: %s\n", ifr.ifr_ifindex, ifp->ifr_name); #endif /* HAVE_STRUCT_IFREQ_IFR_INDEX */ #else /* !defined(SIOCGIFINDEX) */ fprintf(outfile, "%2d: %s\n", i/(int)sizeof(struct ifreq), ifp->ifr_name); #endif /* defined(SIOCGIFINDEX) */ } Close(s); #endif /* defined(SIOCGIFCONF) */ return 0; } #endif /* _WITH_SOCKET */