1/*
2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/objects.h>
13#include <openssl/x509.h>
14#include <openssl/pem.h>
15#include <openssl/x509v3.h>
16#include <openssl/ocsp.h>
17#include "ocsp_local.h"
18#include <openssl/asn1t.h>
19
20/* Convert a certificate and its issuer to an OCSP_CERTID */
21
22OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject,
23 const X509 *issuer)
24{
25 X509_NAME *iname;
26 const ASN1_INTEGER *serial;
27 ASN1_BIT_STRING *ikey;
28 if (!dgst)
29 dgst = EVP_sha1();
30 if (subject) {
31 iname = X509_get_issuer_name(subject);
32 serial = X509_get0_serialNumber(subject);
33 } else {
34 iname = X509_get_subject_name(issuer);
35 serial = NULL;
36 }
37 ikey = X509_get0_pubkey_bitstr(issuer);
38 return OCSP_cert_id_new(dgst, iname, ikey, serial);
39}
40
41OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
42 const X509_NAME *issuerName,
43 const ASN1_BIT_STRING *issuerKey,
44 const ASN1_INTEGER *serialNumber)
45{
46 int nid;
47 unsigned int i;
48 X509_ALGOR *alg;
49 OCSP_CERTID *cid = NULL;
50 unsigned char md[EVP_MAX_MD_SIZE];
51
52 if ((cid = OCSP_CERTID_new()) == NULL)
53 goto err;
54
55 alg = &cid->hashAlgorithm;
56 ASN1_OBJECT_free(alg->algorithm);
57 if ((nid = EVP_MD_type(dgst)) == NID_undef) {
58 OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_UNKNOWN_NID);
59 goto err;
60 }
61 if ((alg->algorithm = OBJ_nid2obj(nid)) == NULL)
62 goto err;
63 if ((alg->parameter = ASN1_TYPE_new()) == NULL)
64 goto err;
65 alg->parameter->type = V_ASN1_NULL;
66
67 if (!X509_NAME_digest(issuerName, dgst, md, &i))
68 goto digerr;
69 if (!(ASN1_OCTET_STRING_set(&cid->issuerNameHash, md, i)))
70 goto err;
71
72 /* Calculate the issuerKey hash, excluding tag and length */
73 if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
74 goto err;
75
76 if (!(ASN1_OCTET_STRING_set(&cid->issuerKeyHash, md, i)))
77 goto err;
78
79 if (serialNumber) {
80 if (ASN1_STRING_copy(&cid->serialNumber, serialNumber) == 0)
81 goto err;
82 }
83 return cid;
84 digerr:
85 OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_DIGEST_ERR);
86 err:
87 OCSP_CERTID_free(cid);
88 return NULL;
89}
90
91int OCSP_id_issuer_cmp(const OCSP_CERTID *a, const OCSP_CERTID *b)
92{
93 int ret;
94 ret = OBJ_cmp(a->hashAlgorithm.algorithm, b->hashAlgorithm.algorithm);
95 if (ret)
96 return ret;
97 ret = ASN1_OCTET_STRING_cmp(&a->issuerNameHash, &b->issuerNameHash);
98 if (ret)
99 return ret;
100 return ASN1_OCTET_STRING_cmp(&a->issuerKeyHash, &b->issuerKeyHash);
101}
102
103int OCSP_id_cmp(const OCSP_CERTID *a, const OCSP_CERTID *b)
104{
105 int ret;
106 ret = OCSP_id_issuer_cmp(a, b);
107 if (ret)
108 return ret;
109 return ASN1_INTEGER_cmp(&a->serialNumber, &b->serialNumber);
110}
111
112/*
113 * Parse a URL and split it up into host, port and path components and
114 * whether it is SSL.
115 */
116
117int OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
118 int *pssl)
119{
120 char *p, *buf;
121
122 char *host, *port;
123
124 *phost = NULL;
125 *pport = NULL;
126 *ppath = NULL;
127
128 /* dup the buffer since we are going to mess with it */
129 buf = OPENSSL_strdup(url);
130 if (!buf)
131 goto mem_err;
132
133 /* Check for initial colon */
134 p = strchr(buf, ':');
135 if (p == NULL)
136 goto parse_err;
137
138 *(p++) = '\0';
139
140 if (strcmp(buf, "http") == 0) {
141 *pssl = 0;
142 port = "80";
143 } else if (strcmp(buf, "https") == 0) {
144 *pssl = 1;
145 port = "443";
146 } else
147 goto parse_err;
148
149 /* Check for double slash */
150 if ((p[0] != '/') || (p[1] != '/'))
151 goto parse_err;
152
153 p += 2;
154
155 host = p;
156
157 /* Check for trailing part of path */
158 p = strchr(p, '/');
159 if (p == NULL)
160 *ppath = OPENSSL_strdup("/");
161 else {
162 *ppath = OPENSSL_strdup(p);
163 /* Set start of path to 0 so hostname is valid */
164 *p = '\0';
165 }
166
167 if (*ppath == NULL)
168 goto mem_err;
169
170 p = host;
171 if (host[0] == '[') {
172 /* ipv6 literal */
173 host++;
174 p = strchr(host, ']');
175 if (p == NULL)
176 goto parse_err;
177 *p = '\0';
178 p++;
179 }
180
181 /* Look for optional ':' for port number */
182 if ((p = strchr(p, ':'))) {
183 *p = 0;
184 port = p + 1;
185 }
186
187 *pport = OPENSSL_strdup(port);
188 if (*pport == NULL)
189 goto mem_err;
190
191 *phost = OPENSSL_strdup(host);
192
193 if (*phost == NULL)
194 goto mem_err;
195
196 OPENSSL_free(buf);
197
198 return 1;
199
200 mem_err:
201 OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
202 goto err;
203
204 parse_err:
205 OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
206
207 err:
208 OPENSSL_free(buf);
209 OPENSSL_free(*ppath);
210 *ppath = NULL;
211 OPENSSL_free(*pport);
212 *pport = NULL;
213 OPENSSL_free(*phost);
214 *phost = NULL;
215 return 0;
216
217}
218
219IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)
220