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 */
68 static char *strip_spaces(char *name);
74 if(!(tmp = Malloc(strlen(str) + 1))) return NULL;
79 /* Add a CONF_VALUE name value pair to stack */
81 int X509V3_add_value(name, value, extlist)
86 CONF_VALUE *vtmp = NULL;
87 char *tname = NULL, *tvalue = NULL;
88 if(name && !(tname = str_dup(name))) goto err;
89 if(value && !(tvalue = str_dup(value))) goto err;;
90 if(!(vtmp = (CONF_VALUE *)Malloc(sizeof(CONF_VALUE)))) goto err;
91 if(!*extlist && !(*extlist = sk_new(NULL))) goto err;
95 if(!sk_push(*extlist, (char *)vtmp)) goto err;
98 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
100 if(tname) Free(tname);
101 if(tvalue) Free(tvalue);
105 /* Free function for STACK of CONF_VALUE */
107 void X509V3_conf_free(conf)
111 if(conf->name) Free(conf->name);
112 if(conf->value) Free(conf->value);
113 if(conf->section) Free(conf->section);
117 int X509V3_add_value_bool(name, asn1_bool, extlist)
122 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
123 return X509V3_add_value(name, "FALSE", extlist);
126 int X509V3_add_value_bool_nf(name, asn1_bool, extlist)
131 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
136 char *i2s_ASN1_ENUMERATED(method, a)
137 X509V3_EXT_METHOD *method;
140 BIGNUM *bntmp = NULL;
143 if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
144 !(strtmp = BN_bn2dec(bntmp)) )
145 X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
150 char *i2s_ASN1_INTEGER(method, a)
151 X509V3_EXT_METHOD *method;
154 BIGNUM *bntmp = NULL;
157 if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
158 !(strtmp = BN_bn2dec(bntmp)) )
159 X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
164 int X509V3_add_value_int(name, aint, extlist)
172 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
173 ret = X509V3_add_value(name, strtmp, extlist);
178 int X509V3_get_value_bool(value, asn1_bool)
183 if(!(btmp = value->value)) goto err;
184 if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
185 || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
186 || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
189 } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
190 || !strcmp(btmp, "N") || !strcmp(btmp, "n")
191 || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
196 X509V3err(X509V3_F_X509V3_VALUE_GET_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
197 X509V3_conf_err(value);
201 int X509V3_get_value_int(value, aint)
208 X509V3err(X509V3_F_X509V3_GET_VALUE_INT,X509V3_R_INVALID_NULL_VALUE);
209 X509V3_conf_err(value);
212 if(!BN_dec2bn(&bn, value->value)) {
213 X509V3err(X509V3_F_X509V3_GET_VALUE_INT,X509V3_R_BN_DEC2BN_ERROR);
214 X509V3_conf_err(value);
218 if(!(*aint = BN_to_ASN1_INTEGER(bn, NULL))) {
219 X509V3err(X509V3_F_X509V3_GET_VALUE_INT,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
220 X509V3_conf_err(value);
232 STACK *X509V3_parse_list(line)
237 STACK *values = NULL;
240 /* We are going to modify the line so copy it first */
241 linebuf = str_dup(line);
244 /* Go through all characters */
245 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
252 ntmp = strip_spaces(q);
254 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
258 } else if(c == ',') {
260 ntmp = strip_spaces(q);
263 printf("%s\n", ntmp);
266 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
269 X509V3_add_value(ntmp, NULL, &values);
277 vtmp = strip_spaces(q);
279 printf("%s\n", ntmp);
282 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
285 X509V3_add_value(ntmp, vtmp, &values);
293 if(state == HDR_VALUE) {
294 vtmp = strip_spaces(q);
296 printf("%s=%s\n", ntmp, vtmp);
299 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
302 X509V3_add_value(ntmp, vtmp, &values);
304 ntmp = strip_spaces(q);
306 printf("%s\n", ntmp);
309 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
312 X509V3_add_value(ntmp, NULL, &values);
319 sk_pop_free(values, X509V3_conf_free);
324 /* Delete leading and trailing spaces from a string */
325 static char *strip_spaces(name)
329 /* Skip over leading spaces */
331 while(*p && isspace(*p)) p++;
333 q = p + strlen(p) - 1;
334 while((q != p) && isspace(*q)) q--;
340 /* hex string utilities */
342 /* Given a buffer of length 'len' return a Malloc'ed string with its
346 char *hex_to_string(buffer, len)
347 unsigned char *buffer;
353 static char hexdig[] = "0123456789ABCDEF";
354 if(!buffer || !len) return NULL;
355 if(!(tmp = Malloc(len * 3 + 1))) {
356 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
360 for(i = 0, p = buffer; i < len; i++,p++) {
361 *q++ = hexdig[(*p >> 4) & 0xf];
362 *q++ = hexdig[*p & 0xf];
369 /* Give a string of hex digits convert to
373 unsigned char *string_to_hex(str, len)
377 unsigned char *hexbuf, *q;
378 unsigned char ch, cl, *p;
380 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
383 if(!(hexbuf = Malloc(strlen(str) >> 1))) goto err;
384 for(p = (unsigned char *)str, q = hexbuf; *p;) {
386 if(ch == ':') continue;
389 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
393 if(isupper(ch)) ch = tolower(ch);
394 if(isupper(cl)) cl = tolower(cl);
396 if((ch >= '0') && (ch <= '9')) ch -= '0';
397 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
400 if((cl >= '0') && (cl <= '9')) cl -= '0';
401 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
404 *q++ = (ch << 4) | cl;
407 if(len) *len = q - hexbuf;
412 if(hexbuf) Free(hexbuf);
413 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
418 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
423 /* V2I name comparison function: returns zero if 'name' matches
427 int name_cmp(name, cmp)
434 if((ret = strncmp(name, cmp, len))) return ret;
436 if(!c || (c=='.')) return 0;