1 /*
2 * Copyright (c) 2009, Sun Microsystems, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of Sun Microsystems, Inc. nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28 /*
29 #include <sys/cdefs.h>
30 */
31
32 /*
33 * publickey.c
34 * Copyright (C) 1986, Sun Microsystems, Inc.
35 */
36
37 /*
38 * Public key lookup routines
39 */
40 #include <wintirpc.h>
41 #ifndef _WIN32
42 #include <stdio.h>
43 //#include <pwd.h>
44 #include <rpc/rpc.h>
45 #include <rpc/key_prot.h>
46 #include <rpcsvc/yp_prot.h>
47 #include <rpcsvc/ypclnt.h>
48 #include <string.h>
49 #include <stdlib.h>
50
51 #define PKFILE "/etc/publickey"
52
53 /*
54 * Hack to let ypserv/rpc.nisd use AUTH_DES.
55 */
56 int (*__getpublickey_LOCAL)() = 0;
57
58 /*
59 * Get somebody's public key
60 */
61 int
__getpublickey_real(netname,publickey)62 __getpublickey_real(netname, publickey)
63 char *netname;
64 char *publickey;
65 {
66 char lookup[3 * HEXKEYBYTES];
67 char *p;
68
69 if (publickey == NULL)
70 return (0);
71 if (!getpublicandprivatekey(netname, lookup))
72 return (0);
73 p = strchr(lookup, ':');
74 if (p == NULL) {
75 return (0);
76 }
77 *p = '\0';
78 (void) strncpy(publickey, lookup, HEXKEYBYTES);
79 publickey[HEXKEYBYTES] = '\0';
80 return (1);
81 }
82
83 /*
84 * reads the file /etc/publickey looking for a + to optionally go to the
85 * yellow pages
86 */
87
88 int
getpublicandprivatekey(key,ret)89 getpublicandprivatekey(key, ret)
90 char *key;
91 char *ret;
92 {
93 char buf[1024]; /* big enough */
94 char *res;
95 FILE *fd;
96 char *mkey;
97 char *mval;
98
99 fd = fopen(PKFILE, "r");
100 if (fd == NULL)
101 return (0);
102 for (;;) {
103 res = fgets(buf, sizeof(buf), fd);
104 if (res == NULL) {
105 fclose(fd);
106 return (0);
107 }
108 if (res[0] == '#')
109 continue;
110 else if (res[0] == '+') {
111 #ifdef YP
112 char *PKMAP = "publickey.byname";
113 char *lookup;
114 char *domain;
115 int err;
116 int len;
117
118 err = yp_get_default_domain(&domain);
119 if (err) {
120 continue;
121 }
122 lookup = NULL;
123 err = yp_match(domain, PKMAP, key, strlen(key), &lookup, &len);
124 if (err) {
125 #ifdef DEBUG
126 fprintf(stderr, "match failed error %d\n", err);
127 #endif
128 continue;
129 }
130 lookup[len] = 0;
131 strcpy(ret, lookup);
132 fclose(fd);
133 free(lookup);
134 return (2);
135 #else /* YP */
136 #ifdef DEBUG
137 fprintf(stderr,
138 "Bad record in %s '+' -- NIS not supported in this library copy\n", PKFILE);
139 #endif /* DEBUG */
140 continue;
141 #endif /* YP */
142 } else {
143 mkey = strsep(&res, "\t ");
144 if (mkey == NULL) {
145 fprintf(stderr,
146 "Bad record in %s -- %s", PKFILE, buf);
147 continue;
148 }
149 do {
150 mval = strsep(&res, " \t#\n");
151 } while (mval != NULL && !*mval);
152 if (mval == NULL) {
153 fprintf(stderr,
154 "Bad record in %s val problem - %s", PKFILE, buf);
155 continue;
156 }
157 if (strcmp(mkey, key) == 0) {
158 strcpy(ret, mval);
159 fclose(fd);
160 return (1);
161 }
162 }
163 }
164 }
165
getpublickey(netname,publickey)166 int getpublickey(netname, publickey)
167 const char *netname;
168 char *publickey;
169 {
170 if (__getpublickey_LOCAL != NULL)
171 return(__getpublickey_LOCAL(netname, publickey));
172 else
173 return(__getpublickey_real(netname, publickey));
174 }
175 #endif /* ! _WIN32 */
176