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 */
64 #include <openssl/conf.h>
65 #include <openssl/x509v3.h>
67 static char *strip_spaces(char *name);
69 /* Add a CONF_VALUE name value pair to stack */
71 int X509V3_add_value(const char *name, const char *value, STACK **extlist)
73 CONF_VALUE *vtmp = NULL;
74 char *tname = NULL, *tvalue = NULL;
75 if(name && !(tname = BUF_strdup(name))) goto err;
76 if(value && !(tvalue = BUF_strdup(value))) goto err;;
77 if(!(vtmp = (CONF_VALUE *)Malloc(sizeof(CONF_VALUE)))) goto err;
78 if(!*extlist && !(*extlist = sk_new(NULL))) goto err;
82 if(!sk_push(*extlist, (char *)vtmp)) goto err;
85 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
87 if(tname) Free(tname);
88 if(tvalue) Free(tvalue);
92 int X509V3_add_value_uchar(const char *name, const unsigned char *value,
95 return X509V3_add_value(name,(const char *)value,extlist);
98 /* Free function for STACK of CONF_VALUE */
100 void X509V3_conf_free(CONF_VALUE *conf)
103 if(conf->name) Free(conf->name);
104 if(conf->value) Free(conf->value);
105 if(conf->section) Free(conf->section);
109 int X509V3_add_value_bool(const char *name, int asn1_bool, STACK **extlist)
111 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
112 return X509V3_add_value(name, "FALSE", extlist);
115 int X509V3_add_value_bool_nf(char *name, int asn1_bool, STACK **extlist)
117 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
122 char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
124 BIGNUM *bntmp = NULL;
127 if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
128 !(strtmp = BN_bn2dec(bntmp)) )
129 X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
134 char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
136 BIGNUM *bntmp = NULL;
139 if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
140 !(strtmp = BN_bn2dec(bntmp)) )
141 X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
146 ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
152 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
155 if(!BN_dec2bn(&bn, value)) {
156 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
160 if(!(aint = BN_to_ASN1_INTEGER(bn, NULL))) {
161 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
168 int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
174 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
175 ret = X509V3_add_value(name, strtmp, extlist);
180 int X509V3_get_value_bool(CONF_VALUE *value, int *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_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
197 X509V3_conf_err(value);
201 int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
204 if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
205 X509V3_conf_err(value);
217 STACK *X509V3_parse_list(char *line)
221 STACK *values = NULL;
224 /* We are going to modify the line so copy it first */
225 linebuf = BUF_strdup(line);
228 /* Go through all characters */
229 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
236 ntmp = strip_spaces(q);
238 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
242 } else if(c == ',') {
244 ntmp = strip_spaces(q);
247 printf("%s\n", ntmp);
250 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
253 X509V3_add_value(ntmp, NULL, &values);
261 vtmp = strip_spaces(q);
263 printf("%s\n", ntmp);
266 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
269 X509V3_add_value(ntmp, vtmp, &values);
277 if(state == HDR_VALUE) {
278 vtmp = strip_spaces(q);
280 printf("%s=%s\n", ntmp, vtmp);
283 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
286 X509V3_add_value(ntmp, vtmp, &values);
288 ntmp = strip_spaces(q);
290 printf("%s\n", ntmp);
293 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
296 X509V3_add_value(ntmp, NULL, &values);
303 sk_pop_free(values, X509V3_conf_free);
308 /* Delete leading and trailing spaces from a string */
309 static char *strip_spaces(char *name)
312 /* Skip over leading spaces */
314 while(*p && isspace(*p)) p++;
316 q = p + strlen(p) - 1;
317 while((q != p) && isspace(*q)) q--;
323 /* hex string utilities */
325 /* Given a buffer of length 'len' return a Malloc'ed string with its
329 char *hex_to_string(unsigned char *buffer, long len)
334 static char hexdig[] = "0123456789ABCDEF";
335 if(!buffer || !len) return NULL;
336 if(!(tmp = Malloc(len * 3 + 1))) {
337 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
341 for(i = 0, p = buffer; i < len; i++,p++) {
342 *q++ = hexdig[(*p >> 4) & 0xf];
343 *q++ = hexdig[*p & 0xf];
350 /* Give a string of hex digits convert to
354 unsigned char *string_to_hex(char *str, long *len)
356 unsigned char *hexbuf, *q;
357 unsigned char ch, cl, *p;
359 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
362 if(!(hexbuf = Malloc(strlen(str) >> 1))) goto err;
363 for(p = (unsigned char *)str, q = hexbuf; *p;) {
365 if(ch == ':') continue;
368 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
372 if(isupper(ch)) ch = tolower(ch);
373 if(isupper(cl)) cl = tolower(cl);
375 if((ch >= '0') && (ch <= '9')) ch -= '0';
376 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
379 if((cl >= '0') && (cl <= '9')) cl -= '0';
380 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
383 *q++ = (ch << 4) | cl;
386 if(len) *len = q - hexbuf;
391 if(hexbuf) Free(hexbuf);
392 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
397 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
402 /* V2I name comparison function: returns zero if 'name' matches
406 int name_cmp(const char *name, const char *cmp)
411 if((ret = strncmp(name, cmp, len))) return ret;
413 if(!c || (c=='.')) return 0;