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#include <string.h>
59
60#include <openssl/buf.h>
61#include <openssl/err.h>
62#include <openssl/mem.h>
63#include <openssl/obj.h>
64#include <openssl/x509.h>
65
66#include "../internal.h"
67
68
69/*
70 * Limit to ensure we don't overflow: much greater than
71 * anything enountered in practice.
72 */
73
74#define NAME_ONELINE_MAX (1024 * 1024)
75
76char *X509_NAME_oneline(X509_NAME *a, char *buf, int len)
77{
78 X509_NAME_ENTRY *ne;
79 size_t i;
80 int n, lold, l, l1, l2, num, j, type;
81 const char *s;
82 char *p;
83 unsigned char *q;
84 BUF_MEM *b = NULL;
85 static const char hex[17] = "0123456789ABCDEF";
86 int gs_doit[4];
87 char tmp_buf[80];
88
89 if (buf == NULL) {
90 if ((b = BUF_MEM_new()) == NULL)
91 goto err;
92 if (!BUF_MEM_grow(b, 200))
93 goto err;
94 b->data[0] = '\0';
95 len = 200;
96 } else if (len <= 0) {
97 return NULL;
98 }
99 if (a == NULL) {
100 if (b) {
101 buf = b->data;
102 OPENSSL_free(b);
103 }
104 BUF_strlcpy(buf, "NO X509_NAME", len);
105 return buf;
106 }
107
108 len--; /* space for '\0' */
109 l = 0;
110 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
111 ne = sk_X509_NAME_ENTRY_value(a->entries, i);
112 n = OBJ_obj2nid(ne->object);
113 if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
114 i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
115 s = tmp_buf;
116 }
117 l1 = strlen(s);
118
119 type = ne->value->type;
120 num = ne->value->length;
121 if (num > NAME_ONELINE_MAX) {
122 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
123 goto end;
124 }
125 q = ne->value->data;
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 if ((q[j] < ' ') || (q[j] > '~'))
147 l2 += 3;
148 }
149
150 lold = l;
151 l += 1 + l1 + 1 + l2;
152 if (l > NAME_ONELINE_MAX) {
153 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
154 goto end;
155 }
156 if (b != NULL) {
157 if (!BUF_MEM_grow(b, l + 1))
158 goto err;
159 p = &(b->data[lold]);
160 } else if (l > len) {
161 break;
162 } else
163 p = &(buf[lold]);
164 *(p++) = '/';
165 OPENSSL_memcpy(p, s, (unsigned int)l1);
166 p += l1;
167 *(p++) = '=';
168
169 q = ne->value->data;
170
171 for (j = 0; j < num; j++) {
172 if (!gs_doit[j & 3])
173 continue;
174 n = q[j];
175 if ((n < ' ') || (n > '~')) {
176 *(p++) = '\\';
177 *(p++) = 'x';
178 *(p++) = hex[(n >> 4) & 0x0f];
179 *(p++) = hex[n & 0x0f];
180 } else
181 *(p++) = n;
182 }
183 *p = '\0';
184 }
185 if (b != NULL) {
186 p = b->data;
187 OPENSSL_free(b);
188 } else
189 p = buf;
190 if (i == 0)
191 *p = '\0';
192 return (p);
193 err:
194 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
195 end:
196 BUF_MEM_free(b);
197 return (NULL);
198}
199