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/lhash.h> 63 #include <openssl/mem.h> 64 #include <openssl/obj.h> 65 #include <openssl/x509.h> 66 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 77 char *X509_NAME_oneline(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 strncpy(buf, "NO X509_NAME", len); 106 buf[len - 1] = '\0'; 107 return buf; 108 } 109 110 len--; /* space for '\0' */ 111 l = 0; 112 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) { 113 ne = sk_X509_NAME_ENTRY_value(a->entries, i); 114 n = OBJ_obj2nid(ne->object); 115 if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) { 116 i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object); 117 s = tmp_buf; 118 } 119 l1 = strlen(s); 120 121 type = ne->value->type; 122 num = ne->value->length; 123 if (num > NAME_ONELINE_MAX) { 124 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG); 125 goto end; 126 } 127 q = ne->value->data; 128 129 if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) { 130 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0; 131 for (j = 0; j < num; j++) 132 if (q[j] != 0) 133 gs_doit[j & 3] = 1; 134 135 if (gs_doit[0] | gs_doit[1] | gs_doit[2]) 136 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1; 137 else { 138 gs_doit[0] = gs_doit[1] = gs_doit[2] = 0; 139 gs_doit[3] = 1; 140 } 141 } else 142 gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1; 143 144 for (l2 = j = 0; j < num; j++) { 145 if (!gs_doit[j & 3]) 146 continue; 147 l2++; 148 if ((q[j] < ' ') || (q[j] > '~')) 149 l2 += 3; 150 } 151 152 lold = l; 153 l += 1 + l1 + 1 + l2; 154 if (l > NAME_ONELINE_MAX) { 155 OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG); 156 goto end; 157 } 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 OPENSSL_memcpy(p, s, (unsigned int)l1); 168 p += l1; 169 *(p++) = '='; 170 171 q = ne->value->data; 172 173 for (j = 0; j < num; j++) { 174 if (!gs_doit[j & 3]) 175 continue; 176 n = q[j]; 177 if ((n < ' ') || (n > '~')) { 178 *(p++) = '\\'; 179 *(p++) = 'x'; 180 *(p++) = hex[(n >> 4) & 0x0f]; 181 *(p++) = hex[n & 0x0f]; 182 } else 183 *(p++) = n; 184 } 185 *p = '\0'; 186 } 187 if (b != NULL) { 188 p = b->data; 189 OPENSSL_free(b); 190 } else 191 p = buf; 192 if (i == 0) 193 *p = '\0'; 194 return (p); 195 err: 196 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 197 end: 198 BUF_MEM_free(b); 199 return (NULL); 200 } 201
