1 /* crypto/x509/x509_obj.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 76 char *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
