reactos/dll/win32/libtirpc/src/getpublickey.c

   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
  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
  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
 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 */