/* $NetBSD: h_protoent.c,v 1.2 2011/04/07 18:14:09 jruoho Exp $ */ /*- * Copyright (c) 2011 The NetBSD Foundation, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <netdb.h> #include <stdint.h> #include <stdlib.h> #include <unistd.h> #include <netinet/in.h> #include <sys/types.h> #include <stdio.h> static void pserv(const struct protoent *prp) { char **pp; printf("name=%s, proto=%d, aliases=", prp->p_name, prp->p_proto); for (pp = prp->p_aliases; *pp; pp++) printf("%s ", *pp); printf("\n"); } static void usage(void) { (void)fprintf(stderr, "Usage: %s\n" "\t%s -p <proto>\n" "\t%s -n <name>\n", getprogname(), getprogname(), getprogname()); exit(1); } int main(int argc, char *argv[]) { struct protoent *prp; const char *proto = NULL, *name = NULL; int c; while ((c = getopt(argc, argv, "p:n:")) != -1) { switch (c) { case 'n': name = optarg; break; case 'p': proto = optarg; break; default: usage(); } } if (proto && name) usage(); if (proto) { if ((prp = getprotobynumber(atoi(proto))) != NULL) pserv(prp); return 0; } if (name) { if ((prp = getprotobyname(name)) != NULL) pserv(prp); return 0; } setprotoent(0); while ((prp = getprotoent()) != NULL) pserv(prp); endprotoent(); return 0; }