/* $NetBSD: getprotoent.c,v 1.1.1.2 2012/09/09 16:07:54 christos Exp $ */ /* * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") * Copyright (c) 1996,1999 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #if !defined(LINT) && !defined(CODECENTER) static const char rcsid[] = "Id: getprotoent.c,v 1.4 2005/04/27 04:56:26 sra Exp "; #endif /* Imports */ #include "port_before.h" #if !defined(__BIND_NOSTATIC) #include #include #include #include #include #include #include #include #include "port_after.h" #include "irs_data.h" /* Forward */ static struct net_data *init(void); /* Public */ struct protoent * getprotoent() { struct net_data *net_data = init(); return (getprotoent_p(net_data)); } struct protoent * getprotobyname(const char *name) { struct net_data *net_data = init(); return (getprotobyname_p(name, net_data)); } struct protoent * getprotobynumber(int proto) { struct net_data *net_data = init(); return (getprotobynumber_p(proto, net_data)); } void setprotoent(int stayopen) { struct net_data *net_data = init(); setprotoent_p(stayopen, net_data); } void endprotoent() { struct net_data *net_data = init(); endprotoent_p(net_data); } /* Shared private. */ struct protoent * getprotoent_p(struct net_data *net_data) { struct irs_pr *pr; if (!net_data || !(pr = net_data->pr)) return (NULL); net_data->pr_last = (*pr->next)(pr); return (net_data->pr_last); } struct protoent * getprotobyname_p(const char *name, struct net_data *net_data) { struct irs_pr *pr; char **pap; if (!net_data || !(pr = net_data->pr)) return (NULL); if (net_data->pr_stayopen && net_data->pr_last) { if (!strcmp(net_data->pr_last->p_name, name)) return (net_data->pr_last); for (pap = net_data->pr_last->p_aliases; pap && *pap; pap++) if (!strcmp(name, *pap)) return (net_data->pr_last); } net_data->pr_last = (*pr->byname)(pr, name); if (!net_data->pr_stayopen) endprotoent(); return (net_data->pr_last); } struct protoent * getprotobynumber_p(int proto, struct net_data *net_data) { struct irs_pr *pr; if (!net_data || !(pr = net_data->pr)) return (NULL); if (net_data->pr_stayopen && net_data->pr_last) if (net_data->pr_last->p_proto == proto) return (net_data->pr_last); net_data->pr_last = (*pr->bynumber)(pr, proto); if (!net_data->pr_stayopen) endprotoent(); return (net_data->pr_last); } void setprotoent_p(int stayopen, struct net_data *net_data) { struct irs_pr *pr; if (!net_data || !(pr = net_data->pr)) return; (*pr->rewind)(pr); net_data->pr_stayopen = (stayopen != 0); if (stayopen == 0) net_data_minimize(net_data); } void endprotoent_p(struct net_data *net_data) { struct irs_pr *pr; if ((net_data != NULL) && ((pr = net_data->pr) != NULL)) (*pr->minimize)(pr); } /* Private */ static struct net_data * init() { struct net_data *net_data; if (!(net_data = net_data_init(NULL))) goto error; if (!net_data->pr) { net_data->pr = (*net_data->irs->pr_map)(net_data->irs); if (!net_data->pr || !net_data->res) { error: errno = EIO; return (NULL); } (*net_data->pr->res_set)(net_data->pr, net_data->res, NULL); } return (net_data); } #endif /*__BIND_NOSTATIC*/ /*! \file */