1 /* ocsp_lib.c */
2 /* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
3 * project. */
4
5 /* History:
6 This file was transfered to Richard Levitte from CertCo by Kathy
7 Weinhold in mid-spring 2000 to be included in OpenSSL or released
8 as a patch kit. */
9
10 /* ====================================================================
11 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in
22 * the documentation and/or other materials provided with the
23 * distribution.
24 *
25 * 3. All advertising materials mentioning features or use of this
26 * software must display the following acknowledgment:
27 * "This product includes software developed by the OpenSSL Project
28 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
29 *
30 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
31 * endorse or promote products derived from this software without
32 * prior written permission. For written permission, please contact
33 * openssl-core@openssl.org.
34 *
35 * 5. Products derived from this software may not be called "OpenSSL"
36 * nor may "OpenSSL" appear in their names without prior written
37 * permission of the OpenSSL Project.
38 *
39 * 6. Redistributions of any form whatsoever must retain the following
40 * acknowledgment:
41 * "This product includes software developed by the OpenSSL Project
42 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
45 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
47 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
48 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
51 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
53 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
54 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
55 * OF THE POSSIBILITY OF SUCH DAMAGE.
56 * ====================================================================
57 *
58 * This product includes cryptographic software written by Eric Young
59 * (eay@cryptsoft.com). This product includes software written by Tim
60 * Hudson (tjh@cryptsoft.com).
61 *
62 */
63
64 #include <stdio.h>
65 #include <cryptlib.h>
66 #include <openssl/objects.h>
67 #include <openssl/rand.h>
68 #include <openssl/x509.h>
69 #include <openssl/pem.h>
70 #include <openssl/x509v3.h>
71 #include <openssl/ocsp.h>
72 #include <openssl/asn1t.h>
73
74 /* Convert a certificate and its issuer to an OCSP_CERTID */
75
OCSP_cert_to_id(const EVP_MD * dgst,X509 * subject,X509 * issuer)76 OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
77 {
78 X509_NAME *iname;
79 ASN1_INTEGER *serial;
80 ASN1_BIT_STRING *ikey;
81 #ifndef OPENSSL_NO_SHA1
82 if(!dgst) dgst = EVP_sha1();
83 #endif
84 if (subject)
85 {
86 iname = X509_get_issuer_name(subject);
87 serial = X509_get_serialNumber(subject);
88 }
89 else
90 {
91 iname = X509_get_subject_name(issuer);
92 serial = NULL;
93 }
94 ikey = X509_get0_pubkey_bitstr(issuer);
95 return OCSP_cert_id_new(dgst, iname, ikey, serial);
96 }
97
98
OCSP_cert_id_new(const EVP_MD * dgst,X509_NAME * issuerName,ASN1_BIT_STRING * issuerKey,ASN1_INTEGER * serialNumber)99 OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
100 X509_NAME *issuerName,
101 ASN1_BIT_STRING* issuerKey,
102 ASN1_INTEGER *serialNumber)
103 {
104 int nid;
105 unsigned int i;
106 X509_ALGOR *alg;
107 OCSP_CERTID *cid = NULL;
108 unsigned char md[EVP_MAX_MD_SIZE];
109
110 if (!(cid = OCSP_CERTID_new())) goto err;
111
112 alg = cid->hashAlgorithm;
113 if (alg->algorithm != NULL) ASN1_OBJECT_free(alg->algorithm);
114 if ((nid = EVP_MD_type(dgst)) == NID_undef)
115 {
116 OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_UNKNOWN_NID);
117 goto err;
118 }
119 if (!(alg->algorithm=OBJ_nid2obj(nid))) goto err;
120 if ((alg->parameter=ASN1_TYPE_new()) == NULL) goto err;
121 alg->parameter->type=V_ASN1_NULL;
122
123 if (!X509_NAME_digest(issuerName, dgst, md, &i)) goto digerr;
124 if (!(ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))) goto err;
125
126 /* Calculate the issuerKey hash, excluding tag and length */
127 if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
128 goto err;
129
130 if (!(ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))) goto err;
131
132 if (serialNumber)
133 {
134 ASN1_INTEGER_free(cid->serialNumber);
135 if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber))) goto err;
136 }
137 return cid;
138 digerr:
139 OCSPerr(OCSP_F_OCSP_CERT_ID_NEW,OCSP_R_DIGEST_ERR);
140 err:
141 if (cid) OCSP_CERTID_free(cid);
142 return NULL;
143 }
144
OCSP_id_issuer_cmp(OCSP_CERTID * a,OCSP_CERTID * b)145 int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
146 {
147 int ret;
148 ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
149 if (ret) return ret;
150 ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
151 if (ret) return ret;
152 return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
153 }
154
OCSP_id_cmp(OCSP_CERTID * a,OCSP_CERTID * b)155 int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
156 {
157 int ret;
158 ret = OCSP_id_issuer_cmp(a, b);
159 if (ret) return ret;
160 return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
161 }
162
163
164 /* Parse a URL and split it up into host, port and path components and whether
165 * it is SSL.
166 */
167
OCSP_parse_url(char * url,char ** phost,char ** pport,char ** ppath,int * pssl)168 int OCSP_parse_url(char *url, char **phost, char **pport, char **ppath, int *pssl)
169 {
170 char *p, *buf;
171
172 char *host, *port;
173
174 *phost = NULL;
175 *pport = NULL;
176 *ppath = NULL;
177
178 /* dup the buffer since we are going to mess with it */
179 buf = BUF_strdup(url);
180 if (!buf) goto mem_err;
181
182 /* Check for initial colon */
183 p = strchr(buf, ':');
184
185 if (!p) goto parse_err;
186
187 *(p++) = '\0';
188
189 if (!strcmp(buf, "http"))
190 {
191 *pssl = 0;
192 port = "80";
193 }
194 else if (!strcmp(buf, "https"))
195 {
196 *pssl = 1;
197 port = "443";
198 }
199 else
200 goto parse_err;
201
202 /* Check for double slash */
203 if ((p[0] != '/') || (p[1] != '/'))
204 goto parse_err;
205
206 p += 2;
207
208 host = p;
209
210 /* Check for trailing part of path */
211
212 p = strchr(p, '/');
213
214 if (!p)
215 *ppath = BUF_strdup("/");
216 else
217 {
218 *ppath = BUF_strdup(p);
219 /* Set start of path to 0 so hostname is valid */
220 *p = '\0';
221 }
222
223 if (!*ppath) goto mem_err;
224
225 p = host;
226 if(host[0] == '[')
227 {
228 /* ipv6 literal */
229 host++;
230 p = strchr(host, ']');
231 if(!p) goto parse_err;
232 *p = '\0';
233 p++;
234 }
235
236 /* Look for optional ':' for port number */
237 if ((p = strchr(p, ':')))
238 {
239 *p = 0;
240 port = p + 1;
241 }
242 else
243 {
244 /* Not found: set default port */
245 if (*pssl) port = "443";
246 else port = "80";
247 }
248
249 *pport = BUF_strdup(port);
250 if (!*pport) goto mem_err;
251
252 *phost = BUF_strdup(host);
253
254 if (!*phost) goto mem_err;
255
256 OPENSSL_free(buf);
257
258 return 1;
259
260 mem_err:
261 OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
262 goto err;
263
264 parse_err:
265 OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
266
267
268 err:
269 if (buf) OPENSSL_free(buf);
270 if (*ppath) OPENSSL_free(*ppath);
271 if (*pport) OPENSSL_free(*pport);
272 if (*phost) OPENSSL_free(*phost);
273 return 0;
274
275 }
276
277 IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)
278