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 "lhash.h"
  62 #include "objects.h"
  63 #include "x509.h"
  64 #include "buffer.h"
  65
  66 char *X509_NAME_oneline(X509_NAME *a, char *buf, int len)
  67         {
  68         X509_NAME_ENTRY *ne;
  69         unsigned int i;
  70         int n,lold,l,l1,l2,num,j,type;
  71         const char *s;
  72         char *p;
  73         unsigned char *q;
  74         BUF_MEM *b=NULL;
  75         static char hex[17]="0123456789ABCDEF";
  76         int gs_doit[4];
  77         char tmp_buf[80];
  78
  79         if (buf == NULL)
  80                 {
  81                 if ((b=BUF_MEM_new()) == NULL) goto err;
  82                 if (!BUF_MEM_grow(b,200)) goto err;
  83                 b->data[0]='\0';
  84                 len=200;
  85                 }
  86         if (a == NULL)
  87             {
  88             if(b)
  89                 {
  90                 buf=b->data;
  91                 Free(b);
  92                 }
  93             strncpy(buf,"NO X509_NAME",len);
  94             return buf;
  95             }
  96
  97         len--; /* space for '\0' */
  98         l=0;
  99         for (i=0; (int)i<sk_num(a->entries); i++)
 100                 {
 101                 ne=(X509_NAME_ENTRY *)sk_value(a->entries,i);
 102                 n=OBJ_obj2nid(ne->object);
 103                 if ((n == NID_undef) || ((s=OBJ_nid2sn(n)) == NULL))
 104                         {
 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
 114                 if ((type == V_ASN1_GENERALSTRING) && ((num%4) == 0))
 115                         {
 116                         gs_doit[0]=gs_doit[1]=gs_doit[2]=gs_doit[3]=0;
 117                         for (j=0; j<num; j++)
 118                                 if (q[j] != 0) gs_doit[j&3]=1;
 119
 120                         if (gs_doit[0]|gs_doit[1]|gs_doit[2])
 121                                 gs_doit[0]=gs_doit[1]=gs_doit[2]=gs_doit[3]=1;
 122                         else
 123                                 {
 124                                 gs_doit[0]=gs_doit[1]=gs_doit[2]=0;
 125                                 gs_doit[3]=1;
 126                                 }
 127                         }
 128                 else
 129                         gs_doit[0]=gs_doit[1]=gs_doit[2]=gs_doit[3]=1;
 130
 131                 for (l2=j=0; j<num; j++)
 132                         {
 133                         if (!gs_doit[j&3]) continue;
 134                         l2++;
 135                         if ((q[j] < ' ') || (q[j] > '~')) l2+=3;
 136                         }
 137
 138                 lold=l;
 139                 l+=1+l1+1+l2;
 140                 if (b != NULL)
 141                         {
 142                         if (!BUF_MEM_grow(b,l+1)) goto err;
 143                         p= &(b->data[lold]);
 144                         }
 145                 else if (l > len)
 146                         {
 147                         break;
 148                         }
 149                 else
 150                         p= &(buf[lold]);
 151                 *(p++)='/';
 152                 memcpy(p,s,(unsigned int)l1); p+=l1;
 153                 *(p++)='=';
 154
 155                 q=ne->value->data;
 156
 157                 for (j=0; j<num; j++)
 158                         {
 159                         if (!gs_doit[j&3]) continue;
 160                         n=q[j];
 161                         if ((n < ' ') || (n > '~'))
 162                                 {
 163                                 *(p++)='\\';
 164                                 *(p++)='x';
 165                                 *(p++)=hex[(n>>4)&0x0f];
 166                                 *(p++)=hex[n&0x0f];
 167                                 }
 168                         else
 169                                 *(p++)=n;
 170                         }
 171                 *p='\0';
 172                 }
 173         if (b != NULL)
 174                 {
 175                 p=b->data;
 176                 Free(b);
 177                 }
 178         else
 179                 p=buf;
 180         return(p);
 181 err:
 182         X509err(X509_F_X509_NAME_ONELINE,ERR_R_MALLOC_FAILURE);
 183         if (b != NULL) BUF_MEM_free(b);
 184         return(NULL);
 185         }
 186