lib/libcrypto/x509/x509_obj.c

   1 /* $OpenBSD: x509_obj.c,v 1.17 2017/01/29 17:49:23 beck Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <string.h>
  61
  62 #include <openssl/buffer.h>
  63 #include <openssl/err.h>
  64 #include <openssl/lhash.h>
  65 #include <openssl/objects.h>
  66 #include <openssl/x509.h>
  67
  68 char *
  69 X509_NAME_oneline(X509_NAME *a, char *buf, int len)
  70 {
  71         X509_NAME_ENTRY *ne;
  72         int i;
  73         int n, lold, l, l1, l2, num, j, type;
  74         const char *s;
  75         char *p;
  76         unsigned char *q;
  77         BUF_MEM *b = NULL;
  78         static const char hex[17] = "0123456789ABCDEF";
  79         int gs_doit[4];
  80         char tmp_buf[80];
  81
  82         if (buf == NULL) {
  83                 if ((b = BUF_MEM_new()) == NULL)
  84                         goto err;
  85                 if (!BUF_MEM_grow(b, 200))
  86                         goto err;
  87                 b->data[0] = '\0';
  88                 len = 200;
  89         }
  90         if (a == NULL) {
  91                 if (b) {
  92                         buf = b->data;
  93                         free(b);
  94                 }
  95                 strlcpy(buf, "NO X509_NAME", len);
  96                 return buf;
  97         }
  98
  99         len--; /* space for '\0' */
 100         l = 0;
 101         for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
 102                 ne = sk_X509_NAME_ENTRY_value(a->entries, i);
 103                 n = OBJ_obj2nid(ne->object);
 104                 if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
 105                         i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
 106                         s = tmp_buf;
 107                 }
 108                 l1 = strlen(s);
 109
 110                 type = ne->value->type;
 111                 num = ne->value->length;
 112                 q = ne->value->data;
 113                 if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
 114                         gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
 115                         for (j = 0; j < num; j++)
 116                                 if (q[j] != 0)
 117                                         gs_doit[j & 3] = 1;
 118
 119                         if (gs_doit[0]|gs_doit[1]|gs_doit[2])
 120                                 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
 121                         else {
 122                                 gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
 123                                 gs_doit[3] = 1;
 124                         }
 125                 } else
 126                         gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
 127
 128                 for (l2 = j=0; j < num; j++) {
 129                         if (!gs_doit[j&3])
 130                                 continue;
 131                         l2++;
 132                         if ((q[j] < ' ') || (q[j] > '~'))
 133                                 l2 += 3;
 134                 }
 135
 136                 lold = l;
 137                 l += 1 + l1 + 1 + l2;
 138                 if (b != NULL) {
 139                         if (!BUF_MEM_grow(b, l + 1))
 140                                 goto err;
 141                         p = &(b->data[lold]);
 142                 } else if (l > len) {
 143                         break;
 144                 } else
 145                         p = &(buf[lold]);
 146                 *(p++) = '/';
 147                 memcpy(p, s, l1);
 148                 p += l1;
 149                 *(p++) = '=';
 150                 q = ne->value->data;
 151                 for (j = 0; j < num; j++) {
 152                         if (!gs_doit[j & 3])
 153                                 continue;
 154                         n = q[j];
 155                         if ((n < ' ') || (n > '~')) {
 156                                 *(p++) = '\\';
 157                                 *(p++) = 'x';
 158                                 *(p++) = hex[(n >> 4) & 0x0f];
 159                                 *(p++) = hex[n & 0x0f];
 160                         } else
 161                                 *(p++) = n;
 162                 }
 163                 *p = '\0';
 164         }
 165         if (b != NULL) {
 166                 p = b->data;
 167                 free(b);
 168         } else
 169                 p = buf;
 170         if (i == 0)
 171                 *p = '\0';
 172         return (p);
 173
 174 err:
 175         X509error(ERR_R_MALLOC_FAILURE);
 176         if (b != NULL)
 177                 BUF_MEM_free(b);
 178         return (NULL);
 179 }