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 #include "internal.h"
68
69
70 /*
71 * Limit to ensure we don't overflow: much greater than
72 * anything enountered in practice.
73 */
74
75 #define NAME_ONELINE_MAX (1024 * 1024)
76
X509_NAME_oneline(const X509_NAME * a,char * buf,int len)77 char *X509_NAME_oneline(const X509_NAME *a, char *buf, int len)
78 {
79 X509_NAME_ENTRY *ne;
80 size_t i;
81 int n, lold, l, l1, l2, num, j, type;
82 const char *s;
83 char *p;
84 unsigned char *q;
85 BUF_MEM *b = NULL;
86 static const char hex[17] = "0123456789ABCDEF";
87 int gs_doit[4];
88 char tmp_buf[80];
89
90 if (buf == NULL) {
91 if ((b = BUF_MEM_new()) == NULL)
92 goto err;
93 if (!BUF_MEM_grow(b, 200))
94 goto err;
95 b->data[0] = '\0';
96 len = 200;
97 } else if (len <= 0) {
98 return NULL;
99 }
100 if (a == NULL) {
101 if (b) {
102 buf = b->data;
103 OPENSSL_free(b);
104 }
105 OPENSSL_strlcpy(buf, "NO X509_NAME", len);
106 return buf;
107 }
108
109 len--; /* space for '\0' */
110 l = 0;
111 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
112 ne = sk_X509_NAME_ENTRY_value(a->entries, i);
113 n = OBJ_obj2nid(ne->object);
114 if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
115 i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
116 s = tmp_buf;
117 }
118 l1 = strlen(s);
119
120 type = ne->value->type;
121 num = ne->value->length;
122 if (num > NAME_ONELINE_MAX) {
123 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
124 goto end;
125 }
126 q = ne->value->data;
127
128 if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
129 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
130 for (j = 0; j < num; j++)
131 if (q[j] != 0)
132 gs_doit[j & 3] = 1;
133
134 if (gs_doit[0] | gs_doit[1] | gs_doit[2])
135 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
136 else {
137 gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
138 gs_doit[3] = 1;
139 }
140 } else
141 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
142
143 for (l2 = j = 0; j < num; j++) {
144 if (!gs_doit[j & 3])
145 continue;
146 l2++;
147 if ((q[j] < ' ') || (q[j] > '~'))
148 l2 += 3;
149 }
150
151 lold = l;
152 l += 1 + l1 + 1 + l2;
153 if (l > NAME_ONELINE_MAX) {
154 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
155 goto end;
156 }
157 if (b != NULL) {
158 if (!BUF_MEM_grow(b, l + 1))
159 goto err;
160 p = &(b->data[lold]);
161 } else if (l > len) {
162 break;
163 } else
164 p = &(buf[lold]);
165 *(p++) = '/';
166 OPENSSL_memcpy(p, s, (unsigned int)l1);
167 p += l1;
168 *(p++) = '=';
169
170 q = ne->value->data;
171
172 for (j = 0; j < num; j++) {
173 if (!gs_doit[j & 3])
174 continue;
175 n = q[j];
176 if ((n < ' ') || (n > '~')) {
177 *(p++) = '\\';
178 *(p++) = 'x';
179 *(p++) = hex[(n >> 4) & 0x0f];
180 *(p++) = hex[n & 0x0f];
181 } else
182 *(p++) = n;
183 }
184 *p = '\0';
185 }
186 if (b != NULL) {
187 p = b->data;
188 OPENSSL_free(b);
189 } else
190 p = buf;
191 if (i == 0)
192 *p = '\0';
193 return (p);
194 err:
195 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
196 end:
197 BUF_MEM_free(b);
198 return (NULL);
199 }
200