1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/ocsp.h>
#include "ocsp_lcl.h"
#include <openssl/asn1t.h>
/* Convert a certificate and its issuer to an OCSP_CERTID */
OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject,
const X509 *issuer)
{
X509_NAME *iname;
const ASN1_INTEGER *serial;
ASN1_BIT_STRING *ikey;
if (!dgst)
dgst = EVP_sha1();
if (subject) {
iname = X509_get_issuer_name(subject);
serial = X509_get0_serialNumber(subject);
} else {
iname = X509_get_subject_name(issuer);
serial = NULL;
}
ikey = X509_get0_pubkey_bitstr(issuer);
return OCSP_cert_id_new(dgst, iname, ikey, serial);
}
OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
const X509_NAME *issuerName,
const ASN1_BIT_STRING *issuerKey,
const ASN1_INTEGER *serialNumber)
{
int nid;
unsigned int i;
X509_ALGOR *alg;
OCSP_CERTID *cid = NULL;
unsigned char md[EVP_MAX_MD_SIZE];
if ((cid = OCSP_CERTID_new()) == NULL)
goto err;
alg = &cid->hashAlgorithm;
ASN1_OBJECT_free(alg->algorithm);
if ((nid = EVP_MD_type(dgst)) == NID_undef) {
OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_UNKNOWN_NID);
goto err;
}
if ((alg->algorithm = OBJ_nid2obj(nid)) == NULL)
goto err;
if ((alg->parameter = ASN1_TYPE_new()) == NULL)
goto err;
alg->parameter->type = V_ASN1_NULL;
if (!X509_NAME_digest(issuerName, dgst, md, &i))
goto digerr;
if (!(ASN1_OCTET_STRING_set(&cid->issuerNameHash, md, i)))
goto err;
/* Calculate the issuerKey hash, excluding tag and length */
if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
goto err;
if (!(ASN1_OCTET_STRING_set(&cid->issuerKeyHash, md, i)))
goto err;
if (serialNumber) {
if (ASN1_STRING_copy(&cid->serialNumber, serialNumber) == 0)
goto err;
}
return cid;
digerr:
OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_DIGEST_ERR);
err:
OCSP_CERTID_free(cid);
return NULL;
}
int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
{
int ret;
ret = OBJ_cmp(a->hashAlgorithm.algorithm, b->hashAlgorithm.algorithm);
if (ret)
return ret;
ret = ASN1_OCTET_STRING_cmp(&a->issuerNameHash, &b->issuerNameHash);
if (ret)
return ret;
return ASN1_OCTET_STRING_cmp(&a->issuerKeyHash, &b->issuerKeyHash);
}
int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
{
int ret;
ret = OCSP_id_issuer_cmp(a, b);
if (ret)
return ret;
return ASN1_INTEGER_cmp(&a->serialNumber, &b->serialNumber);
}
/*
* Parse a URL and split it up into host, port and path components and
* whether it is SSL.
*/
int OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
int *pssl)
{
char *p, *buf;
char *host, *port;
*phost = NULL;
*pport = NULL;
*ppath = NULL;
/* dup the buffer since we are going to mess with it */
buf = OPENSSL_strdup(url);
if (!buf)
goto mem_err;
/* Check for initial colon */
p = strchr(buf, ':');
if (!p)
goto parse_err;
*(p++) = '\0';
if (strcmp(buf, "http") == 0) {
*pssl = 0;
port = "80";
} else if (strcmp(buf, "https") == 0) {
*pssl = 1;
port = "443";
} else
goto parse_err;
/* Check for double slash */
if ((p[0] != '/') || (p[1] != '/'))
goto parse_err;
p += 2;
host = p;
/* Check for trailing part of path */
p = strchr(p, '/');
if (!p)
*ppath = OPENSSL_strdup("/");
else {
*ppath = OPENSSL_strdup(p);
/* Set start of path to 0 so hostname is valid */
*p = '\0';
}
if (!*ppath)
goto mem_err;
p = host;
if (host[0] == '[') {
/* ipv6 literal */
host++;
p = strchr(host, ']');
if (!p)
goto parse_err;
*p = '\0';
p++;
}
/* Look for optional ':' for port number */
if ((p = strchr(p, ':'))) {
*p = 0;
port = p + 1;
}
*pport = OPENSSL_strdup(port);
if (!*pport)
goto mem_err;
*phost = OPENSSL_strdup(host);
if (!*phost)
goto mem_err;
OPENSSL_free(buf);
return 1;
mem_err:
OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
goto err;
parse_err:
OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
err:
OPENSSL_free(buf);
OPENSSL_free(*ppath);
*ppath = NULL;
OPENSSL_free(*pport);
*pport = NULL;
OPENSSL_free(*phost);
*phost = NULL;
return 0;
}
IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)
|
