| /* $NetBSD: nsdispatch.c,v 1.30 2005/11/29 03:11:59 christos Exp $ */ |
| |
| /*- |
| * Copyright (c) 1997, 1998, 1999, 2004 The NetBSD Foundation, Inc. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to The NetBSD Foundation |
| * by Luke Mewburn; and by Jason R. Thorpe. |
| * |
| * 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 NetBSD |
| * Foundation, Inc. and its contributors. |
| * 4. Neither the name of The NetBSD Foundation 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 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. |
| */ |
| |
| /*- |
| * Copyright (c) 2003 Networks Associates Technology, Inc. |
| * All rights reserved. |
| * |
| * Portions of this software were developed for the FreeBSD Project by |
| * Jacques A. Vidrine, Safeport Network Services, and Network |
| * Associates Laboratories, the Security Research Division of Network |
| * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 |
| * ("CBOSS"), as part of the DARPA CHATS research program. |
| * |
| * 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 AUTHOR 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 AUTHOR 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 <sys/cdefs.h> |
| #include <sys/types.h> |
| #include <sys/param.h> |
| #include <sys/stat.h> |
| |
| #include <assert.h> |
| #ifdef __ELF__ |
| #include <dlfcn.h> |
| #endif /* __ELF__ */ |
| #include <fcntl.h> |
| #define _NS_PRIVATE |
| #include <nsswitch.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| static nss_method |
| _nsmethod(const char *source, const char *database, const char *method, |
| const ns_dtab disp_tab[], void **cb_data) |
| { |
| int curdisp; |
| |
| if (disp_tab != NULL) { |
| for (curdisp = 0; disp_tab[curdisp].src != NULL; curdisp++) { |
| if (strcasecmp(source, disp_tab[curdisp].src) == 0) { |
| *cb_data = disp_tab[curdisp].cb_data; |
| return (disp_tab[curdisp].callback); |
| } |
| } |
| } |
| |
| *cb_data = NULL; |
| return (NULL); |
| } |
| |
| int |
| /*ARGSUSED*/ |
| nsdispatch(void *retval, const ns_dtab disp_tab[], const char *database, |
| const char *method, const ns_src defaults[], ...) |
| { |
| va_list ap; |
| int i, result; |
| const ns_src *srclist; |
| int srclistsize; |
| nss_method cb; |
| void *cb_data; |
| |
| /* retval may be NULL */ |
| /* disp_tab may be NULL */ |
| assert(database != NULL); |
| assert(method != NULL); |
| assert(defaults != NULL); |
| if (database == NULL || method == NULL || defaults == NULL) |
| return (NS_UNAVAIL); |
| |
| srclist = defaults; |
| srclistsize = 0; |
| while (srclist[srclistsize].name != NULL) |
| srclistsize++; |
| |
| result = 0; |
| |
| for (i = 0; i < srclistsize; i++) { |
| cb = _nsmethod(srclist[i].name, database, method, |
| disp_tab, &cb_data); |
| result = 0; |
| if (cb != NULL) { |
| va_start(ap, defaults); |
| result = (*cb)(retval, cb_data, ap); |
| va_end(ap); |
| if (defaults[0].flags & NS_FORCEALL) |
| continue; |
| if (result & srclist[i].flags) |
| break; |
| } |
| } |
| result &= NS_STATUSMASK; /* clear private flags in result */ |
| |
| return (result ? result : NS_NOTFOUND); |
| } |