1/* $NetBSD: getsubopt.c,v 1.4 1998/02/03 18:44:15 perry Exp $ */ 2 3/*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#if ((!defined(WIN32))&&(!defined(macintosh))) 37#include <sys/cdefs.h> 38#endif /* WIN32 */ 39#if defined(LIBC_SCCS) && !defined(lint) 40#if 0 41static char sccsid[] = "@(#)getsubopt.c 8.1 (Berkeley) 6/4/93"; 42#else 43__RCSID("$NetBSD: getsubopt.c,v 1.4 1998/02/03 18:44:15 perry Exp $"); 44#endif 45#endif /* LIBC_SCCS and not lint */ 46 47#include <stdlib.h> 48#include <string.h> 49#ifdef HAVE_UNISTD_H 50#include <unistd.h> 51#endif /* HAVE_UNISTD_H */ 52#if (defined(WIN32)||(defined(macintosh))) 53#include "sasl.h" 54LIBSASL_API int getsubopt(char **optionp, char * const *tokens, char **valuep); 55#endif /* WIN32 */ 56/* 57 * The SVID interface to getsubopt provides no way of figuring out which 58 * part of the suboptions list wasn't matched. This makes error messages 59 * tricky... The extern variable suboptarg is a pointer to the token 60 * which didn't match. 61 */ 62char *suboptarg; 63 64int 65getsubopt(optionp, tokens, valuep) 66 char **optionp, **valuep; 67 char * const *tokens; 68{ 69 int cnt; 70 char *p; 71 72 suboptarg = *valuep = NULL; 73 74 if (!optionp || !*optionp) 75 return(-1); 76 77 /* skip leading white-space, commas */ 78 for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p); 79 80 if (!*p) { 81 *optionp = p; 82 return(-1); 83 } 84 85 /* save the start of the token, and skip the rest of the token. */ 86 for (suboptarg = p; 87 *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';); 88 89 if (*p) { 90 /* 91 * If there's an equals sign, set the value pointer, and 92 * skip over the value part of the token. Terminate the 93 * token. 94 */ 95 if (*p == '=') { 96 *p = '\0'; 97 for (*valuep = ++p; 98 *p && *p != ',' && *p != ' ' && *p != '\t'; ++p); 99 if (*p) 100 *p++ = '\0'; 101 } else 102 *p++ = '\0'; 103 /* Skip any whitespace or commas after this token. */ 104 for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p); 105 } 106 107 /* set optionp for next round. */ 108 *optionp = p; 109 110 for (cnt = 0; *tokens; ++tokens, ++cnt) 111 if (!strcmp(suboptarg, *tokens)) 112 return(cnt); 113 return(-1); 114} 115