2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
58 /* X509 v3 extension utilities */
67 static char *strip_spaces(char *name);
69 /* Add a CONF_VALUE name value pair to stack */
71 int X509V3_add_value(name, value, extlist)
76 CONF_VALUE *vtmp = NULL;
77 char *tname = NULL, *tvalue = NULL;
78 if(name && !(tname = BUF_strdup(name))) goto err;
79 if(value && !(tvalue = BUF_strdup(value))) goto err;;
80 if(!(vtmp = (CONF_VALUE *)Malloc(sizeof(CONF_VALUE)))) goto err;
81 if(!*extlist && !(*extlist = sk_new(NULL))) goto err;
85 if(!sk_push(*extlist, (char *)vtmp)) goto err;
88 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
90 if(tname) Free(tname);
91 if(tvalue) Free(tvalue);
95 /* Free function for STACK of CONF_VALUE */
97 void X509V3_conf_free(conf)
101 if(conf->name) Free(conf->name);
102 if(conf->value) Free(conf->value);
103 if(conf->section) Free(conf->section);
107 int X509V3_add_value_bool(name, asn1_bool, extlist)
112 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
113 return X509V3_add_value(name, "FALSE", extlist);
116 int X509V3_add_value_bool_nf(name, asn1_bool, extlist)
121 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
126 char *i2s_ASN1_ENUMERATED(method, a)
127 X509V3_EXT_METHOD *method;
130 BIGNUM *bntmp = NULL;
133 if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
134 !(strtmp = BN_bn2dec(bntmp)) )
135 X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
140 char *i2s_ASN1_INTEGER(method, a)
141 X509V3_EXT_METHOD *method;
144 BIGNUM *bntmp = NULL;
147 if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
148 !(strtmp = BN_bn2dec(bntmp)) )
149 X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
154 ASN1_INTEGER *s2i_ASN1_INTEGER(method, value)
155 X509V3_EXT_METHOD *method;
162 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
165 if(!BN_dec2bn(&bn, value)) {
166 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
170 if(!(aint = BN_to_ASN1_INTEGER(bn, NULL))) {
171 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
178 int X509V3_add_value_int(name, aint, extlist)
186 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
187 ret = X509V3_add_value(name, strtmp, extlist);
192 int X509V3_get_value_bool(value, asn1_bool)
197 if(!(btmp = value->value)) goto err;
198 if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
199 || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
200 || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
203 } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
204 || !strcmp(btmp, "N") || !strcmp(btmp, "n")
205 || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
210 X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
211 X509V3_conf_err(value);
215 int X509V3_get_value_int(value, aint)
220 if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
221 X509V3_conf_err(value);
233 STACK *X509V3_parse_list(line)
238 STACK *values = NULL;
241 /* We are going to modify the line so copy it first */
242 linebuf = BUF_strdup(line);
245 /* Go through all characters */
246 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
253 ntmp = strip_spaces(q);
255 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
259 } else if(c == ',') {
261 ntmp = strip_spaces(q);
264 printf("%s\n", ntmp);
267 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
270 X509V3_add_value(ntmp, NULL, &values);
278 vtmp = strip_spaces(q);
280 printf("%s\n", ntmp);
283 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
286 X509V3_add_value(ntmp, vtmp, &values);
294 if(state == HDR_VALUE) {
295 vtmp = strip_spaces(q);
297 printf("%s=%s\n", ntmp, vtmp);
300 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
303 X509V3_add_value(ntmp, vtmp, &values);
305 ntmp = strip_spaces(q);
307 printf("%s\n", ntmp);
310 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
313 X509V3_add_value(ntmp, NULL, &values);
320 sk_pop_free(values, X509V3_conf_free);
325 /* Delete leading and trailing spaces from a string */
326 static char *strip_spaces(name)
330 /* Skip over leading spaces */
332 while(*p && isspace(*p)) p++;
334 q = p + strlen(p) - 1;
335 while((q != p) && isspace(*q)) q--;
341 /* hex string utilities */
343 /* Given a buffer of length 'len' return a Malloc'ed string with its
347 char *hex_to_string(buffer, len)
348 unsigned char *buffer;
354 static char hexdig[] = "0123456789ABCDEF";
355 if(!buffer || !len) return NULL;
356 if(!(tmp = Malloc(len * 3 + 1))) {
357 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
361 for(i = 0, p = buffer; i < len; i++,p++) {
362 *q++ = hexdig[(*p >> 4) & 0xf];
363 *q++ = hexdig[*p & 0xf];
370 /* Give a string of hex digits convert to
374 unsigned char *string_to_hex(str, len)
378 unsigned char *hexbuf, *q;
379 unsigned char ch, cl, *p;
381 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
384 if(!(hexbuf = Malloc(strlen(str) >> 1))) goto err;
385 for(p = (unsigned char *)str, q = hexbuf; *p;) {
387 if(ch == ':') continue;
390 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
394 if(isupper(ch)) ch = tolower(ch);
395 if(isupper(cl)) cl = tolower(cl);
397 if((ch >= '0') && (ch <= '9')) ch -= '0';
398 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
401 if((cl >= '0') && (cl <= '9')) cl -= '0';
402 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
405 *q++ = (ch << 4) | cl;
408 if(len) *len = q - hexbuf;
413 if(hexbuf) Free(hexbuf);
414 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
419 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
424 /* V2I name comparison function: returns zero if 'name' matches
428 int name_cmp(name, cmp)
435 if((ret = strncmp(name, cmp, len))) return ret;
437 if(!c || (c=='.')) return 0;