diff options
Diffstat (limited to 'libc/netbsd/net/nsdispatch.c')
| -rw-r--r-- | libc/netbsd/net/nsdispatch.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/libc/netbsd/net/nsdispatch.c b/libc/netbsd/net/nsdispatch.c new file mode 100644 index 0000000..fa99366 --- /dev/null +++ b/libc/netbsd/net/nsdispatch.c @@ -0,0 +1,152 @@ +/* $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); +} |