172 lines
4.3 KiB
C
172 lines
4.3 KiB
C
/*-
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)publickey.c 1.10 91/03/11 Copyr 1986 Sun Micro";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* publickey.c
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*/
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/*
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* Public key lookup routines
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*/
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#include "namespace.h"
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#include <stdio.h>
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#include <pwd.h>
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#include <rpc/rpc.h>
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#include <rpc/key_prot.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#include <string.h>
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#include <stdlib.h>
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#include "un-namespace.h"
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#define PKFILE "/etc/publickey"
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/*
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* Hack to let ypserv/rpc.nisd use AUTH_DES.
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*/
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int (*__getpublickey_LOCAL)(const char *, char *) = 0;
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/*
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* Get somebody's public key
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*/
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static int
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__getpublickey_real(const char *netname, char *publickey)
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{
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char lookup[3 * HEXKEYBYTES];
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char *p;
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if (publickey == NULL)
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return (0);
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if (!getpublicandprivatekey(netname, lookup))
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return (0);
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p = strchr(lookup, ':');
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if (p == NULL) {
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return (0);
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}
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*p = '\0';
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(void) strncpy(publickey, lookup, HEXKEYBYTES);
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publickey[HEXKEYBYTES] = '\0';
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return (1);
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}
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/*
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* reads the file /etc/publickey looking for a + to optionally go to the
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* yellow pages
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*/
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int
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getpublicandprivatekey(const char *key, char *ret)
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{
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char buf[1024]; /* big enough */
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char *res;
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FILE *fd;
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char *mkey;
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char *mval;
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fd = fopen(PKFILE, "r");
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if (fd == NULL)
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return (0);
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for (;;) {
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res = fgets(buf, sizeof(buf), fd);
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if (res == NULL) {
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fclose(fd);
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return (0);
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}
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if (res[0] == '#')
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continue;
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else if (res[0] == '+') {
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#ifdef YP
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char *PKMAP = "publickey.byname";
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char *lookup;
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char *domain;
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int err;
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int len;
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err = yp_get_default_domain(&domain);
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if (err) {
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continue;
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}
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lookup = NULL;
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err = yp_match(domain, PKMAP, key, strlen(key), &lookup, &len);
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if (err) {
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#ifdef DEBUG
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fprintf(stderr, "match failed error %d\n", err);
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#endif
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continue;
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}
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lookup[len] = 0;
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strcpy(ret, lookup);
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fclose(fd);
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free(lookup);
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return (2);
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#else /* YP */
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#ifdef DEBUG
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fprintf(stderr,
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"Bad record in %s '+' -- NIS not supported in this library copy\n", PKFILE);
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#endif /* DEBUG */
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continue;
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#endif /* YP */
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} else {
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mkey = strsep(&res, "\t ");
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if (mkey == NULL) {
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fprintf(stderr,
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"Bad record in %s -- %s", PKFILE, buf);
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continue;
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}
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do {
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mval = strsep(&res, " \t#\n");
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} while (mval != NULL && !*mval);
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if (mval == NULL) {
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fprintf(stderr,
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"Bad record in %s val problem - %s", PKFILE, buf);
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continue;
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}
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if (strcmp(mkey, key) == 0) {
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strcpy(ret, mval);
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fclose(fd);
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return (1);
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}
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}
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}
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}
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int getpublickey(const char *netname, char *publickey)
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{
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if (__getpublickey_LOCAL != NULL)
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return(__getpublickey_LOCAL(netname, publickey));
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else
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return(__getpublickey_real(netname, publickey));
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}
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