/* * Copyright (c) 1983, 1993 * The Regents of the University of California. 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 BY THE REGENTS 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 REGENTS 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. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include <sys/types.h> #include <string.h> #include <stdlib.h> #include <ctype.h> #include <net/netdb.h> #include <stdio.h> #include <errno.h> #include <arpa/nameser.h> #define MAXALIASES 35 static char SERVDB[] = _PATH_SERVICES; static FILE *servf = NULL; static char line[BUFSIZ+1]; static struct servent serv; static char *serv_aliases[MAXALIASES]; int _serv_stayopen; void setservent(f) int f; { if (servf == NULL) servf = fopen(SERVDB, "r" ); else rewind(servf); _serv_stayopen |= f; } void endservent() { if (servf) { fclose(servf); servf = NULL; } _serv_stayopen = 0; } struct servent * getservent() { char *p; register char *cp, **q; if (servf == NULL && (servf = fopen(SERVDB, "r" )) == NULL) return (NULL); again: if ((p = fgets(line, BUFSIZ, servf)) == NULL) return (NULL); if (*p == '#') goto again; cp = strpbrk(p, "#\n"); if (cp == NULL) goto again; *cp = '\0'; serv.s_name = p; p = strpbrk(p, " \t"); if (p == NULL) goto again; *p++ = '\0'; while (*p == ' ' || *p == '\t') p++; cp = strpbrk(p, ",/"); if (cp == NULL) goto again; *cp++ = '\0'; serv.s_port = htons((u_short)atoi(p)); serv.s_proto = cp; q = serv.s_aliases = serv_aliases; cp = strpbrk(cp, " \t"); if (cp != NULL) *cp++ = '\0'; while (cp && *cp) { if (*cp == ' ' || *cp == '\t') { cp++; continue; } if (q < &serv_aliases[MAXALIASES - 1]) *q++ = cp; cp = strpbrk(cp, " \t"); if (cp != NULL) *cp++ = '\0'; } *q = NULL; return (&serv); }