crypto/x509/x509_obj.c

   1 /* crypto/x509/x509_obj.c */
   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 "cryptlib.h"
  61 #include <openssl/lhash.h>
  62 #include <openssl/objects.h>
  63 #include <openssl/x509.h>
  64 #include <openssl/buffer.h>
  65 #include "internal/x509_int.h"
  66
  67 char *X509_NAME_oneline(X509_NAME *a, char *buf, int len)
  68 {
  69     X509_NAME_ENTRY *ne;
  70     int i;
  71     int n, lold, l, l1, l2, num, j, type;
  72     const char *s;
  73     char *p;
  74     unsigned char *q;
  75     BUF_MEM *b = NULL;
  76     static const char hex[17] = "0123456789ABCDEF";
  77     int gs_doit[4];
  78     char tmp_buf[80];
  79 #ifdef CHARSET_EBCDIC
  80     char ebcdic_buf[1024];
  81 #endif
  82
  83     if (buf == NULL) {
  84         if ((b = BUF_MEM_new()) == NULL)
  85             goto err;
  86         if (!BUF_MEM_grow(b, 200))
  87             goto err;
  88         b->data[0] = '\0';
  89         len = 200;
  90     }
  91     if (a == NULL) {
  92         if (b) {
  93             buf = b->data;
  94             OPENSSL_free(b);
  95         }
  96         strncpy(buf, "NO X509_NAME", len);
  97         buf[len - 1] = '\0';
  98         return buf;
  99     }
 100
 101     len--;                      /* space for '\0' */
 102     l = 0;
 103     for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
 104         ne = sk_X509_NAME_ENTRY_value(a->entries, i);
 105         n = OBJ_obj2nid(ne->object);
 106         if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
 107             i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
 108             s = tmp_buf;
 109         }
 110         l1 = strlen(s);
 111
 112         type = ne->value->type;
 113         num = ne->value->length;
 114         q = ne->value->data;
 115 #ifdef CHARSET_EBCDIC
 116         if (type == V_ASN1_GENERALSTRING ||
 117             type == V_ASN1_VISIBLESTRING ||
 118             type == V_ASN1_PRINTABLESTRING ||
 119             type == V_ASN1_TELETEXSTRING ||
 120             type == V_ASN1_VISIBLESTRING || type == V_ASN1_IA5STRING) {
 121             ascii2ebcdic(ebcdic_buf, q, (num > sizeof ebcdic_buf)
 122                          ? sizeof ebcdic_buf : num);
 123             q = ebcdic_buf;
 124         }
 125 #endif
 126
 127         if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
 128             gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
 129             for (j = 0; j < num; j++)
 130                 if (q[j] != 0)
 131                     gs_doit[j & 3] = 1;
 132
 133             if (gs_doit[0] | gs_doit[1] | gs_doit[2])
 134                 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
 135             else {
 136                 gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
 137                 gs_doit[3] = 1;
 138             }
 139         } else
 140             gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
 141
 142         for (l2 = j = 0; j < num; j++) {
 143             if (!gs_doit[j & 3])
 144                 continue;
 145             l2++;
 146 #ifndef CHARSET_EBCDIC
 147             if ((q[j] < ' ') || (q[j] > '~'))
 148                 l2 += 3;
 149 #else
 150             if ((os_toascii[q[j]] < os_toascii[' ']) ||
 151                 (os_toascii[q[j]] > os_toascii['~']))
 152                 l2 += 3;
 153 #endif
 154         }
 155
 156         lold = l;
 157         l += 1 + l1 + 1 + l2;
 158         if (b != NULL) {
 159             if (!BUF_MEM_grow(b, l + 1))
 160                 goto err;
 161             p = &(b->data[lold]);
 162         } else if (l > len) {
 163             break;
 164         } else
 165             p = &(buf[lold]);
 166         *(p++) = '/';
 167         memcpy(p, s, (unsigned int)l1);
 168         p += l1;
 169         *(p++) = '=';
 170
 171 #ifndef CHARSET_EBCDIC          /* q was assigned above already. */
 172         q = ne->value->data;
 173 #endif
 174
 175         for (j = 0; j < num; j++) {
 176             if (!gs_doit[j & 3])
 177                 continue;
 178 #ifndef CHARSET_EBCDIC
 179             n = q[j];
 180             if ((n < ' ') || (n > '~')) {
 181                 *(p++) = '\\';
 182                 *(p++) = 'x';
 183                 *(p++) = hex[(n >> 4) & 0x0f];
 184                 *(p++) = hex[n & 0x0f];
 185             } else
 186                 *(p++) = n;
 187 #else
 188             n = os_toascii[q[j]];
 189             if ((n < os_toascii[' ']) || (n > os_toascii['~'])) {
 190                 *(p++) = '\\';
 191                 *(p++) = 'x';
 192                 *(p++) = hex[(n >> 4) & 0x0f];
 193                 *(p++) = hex[n & 0x0f];
 194             } else
 195                 *(p++) = q[j];
 196 #endif
 197         }
 198         *p = '\0';
 199     }
 200     if (b != NULL) {
 201         p = b->data;
 202         OPENSSL_free(b);
 203     } else
 204         p = buf;
 205     if (i == 0)
 206         *p = '\0';
 207     return (p);
 208  err:
 209     X509err(X509_F_X509_NAME_ONELINE, ERR_R_MALLOC_FAILURE);
 210     if (b != NULL)
 211         BUF_MEM_free(b);
 212     return (NULL);
 213 }