[331] | 1 | /*
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| 2 | * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/objects.h>
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| 13 | #include <openssl/x509.h>
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| 14 | #include <openssl/pem.h>
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| 15 | #include <openssl/x509v3.h>
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| 16 | #include <openssl/ocsp.h>
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| 17 | #include "ocsp_lcl.h"
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| 18 | #include <openssl/asn1t.h>
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| 19 |
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| 20 | /* Convert a certificate and its issuer to an OCSP_CERTID */
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| 21 |
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| 22 | OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject,
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| 23 | const X509 *issuer)
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| 24 | {
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| 25 | X509_NAME *iname;
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| 26 | const ASN1_INTEGER *serial;
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| 27 | ASN1_BIT_STRING *ikey;
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| 28 | if (!dgst)
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| 29 | dgst = EVP_sha1();
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| 30 | if (subject) {
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| 31 | iname = X509_get_issuer_name(subject);
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| 32 | serial = X509_get0_serialNumber(subject);
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| 33 | } else {
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| 34 | iname = X509_get_subject_name(issuer);
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| 35 | serial = NULL;
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| 36 | }
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| 37 | ikey = X509_get0_pubkey_bitstr(issuer);
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| 38 | return OCSP_cert_id_new(dgst, iname, ikey, serial);
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| 39 | }
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| 40 |
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| 41 | OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
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| 42 | const X509_NAME *issuerName,
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| 43 | const ASN1_BIT_STRING *issuerKey,
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| 44 | const ASN1_INTEGER *serialNumber)
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| 45 | {
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| 46 | int nid;
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| 47 | unsigned int i;
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| 48 | X509_ALGOR *alg;
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| 49 | OCSP_CERTID *cid = NULL;
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| 50 | unsigned char md[EVP_MAX_MD_SIZE];
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| 51 |
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| 52 | if ((cid = OCSP_CERTID_new()) == NULL)
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| 53 | goto err;
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| 54 |
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| 55 | alg = &cid->hashAlgorithm;
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| 56 | ASN1_OBJECT_free(alg->algorithm);
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| 57 | if ((nid = EVP_MD_type(dgst)) == NID_undef) {
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| 58 | OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_UNKNOWN_NID);
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| 59 | goto err;
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| 60 | }
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| 61 | if ((alg->algorithm = OBJ_nid2obj(nid)) == NULL)
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| 62 | goto err;
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| 63 | if ((alg->parameter = ASN1_TYPE_new()) == NULL)
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| 64 | goto err;
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| 65 | alg->parameter->type = V_ASN1_NULL;
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| 66 |
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| 67 | if (!X509_NAME_digest(issuerName, dgst, md, &i))
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| 68 | goto digerr;
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| 69 | if (!(ASN1_OCTET_STRING_set(&cid->issuerNameHash, md, i)))
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| 70 | goto err;
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| 71 |
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| 72 | /* Calculate the issuerKey hash, excluding tag and length */
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| 73 | if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
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| 74 | goto err;
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| 75 |
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| 76 | if (!(ASN1_OCTET_STRING_set(&cid->issuerKeyHash, md, i)))
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| 77 | goto err;
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| 78 |
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| 79 | if (serialNumber) {
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| 80 | if (ASN1_STRING_copy(&cid->serialNumber, serialNumber) == 0)
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| 81 | goto err;
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| 82 | }
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| 83 | return cid;
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| 84 | digerr:
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| 85 | OCSPerr(OCSP_F_OCSP_CERT_ID_NEW, OCSP_R_DIGEST_ERR);
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| 86 | err:
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| 87 | OCSP_CERTID_free(cid);
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| 88 | return NULL;
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| 89 | }
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| 90 |
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| 91 | int OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
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| 92 | {
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| 93 | int ret;
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| 94 | ret = OBJ_cmp(a->hashAlgorithm.algorithm, b->hashAlgorithm.algorithm);
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| 95 | if (ret)
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| 96 | return ret;
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| 97 | ret = ASN1_OCTET_STRING_cmp(&a->issuerNameHash, &b->issuerNameHash);
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| 98 | if (ret)
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| 99 | return ret;
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| 100 | return ASN1_OCTET_STRING_cmp(&a->issuerKeyHash, &b->issuerKeyHash);
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| 101 | }
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| 102 |
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| 103 | int OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
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| 104 | {
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| 105 | int ret;
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| 106 | ret = OCSP_id_issuer_cmp(a, b);
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| 107 | if (ret)
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| 108 | return ret;
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| 109 | return ASN1_INTEGER_cmp(&a->serialNumber, &b->serialNumber);
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| 110 | }
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| 111 |
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| 112 | /*
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| 113 | * Parse a URL and split it up into host, port and path components and
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| 114 | * whether it is SSL.
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| 115 | */
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| 116 |
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| 117 | int OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
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| 118 | int *pssl)
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| 119 | {
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| 120 | char *p, *buf;
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| 121 |
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| 122 | char *host, *port;
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| 123 |
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| 124 | *phost = NULL;
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| 125 | *pport = NULL;
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| 126 | *ppath = NULL;
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| 127 |
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| 128 | /* dup the buffer since we are going to mess with it */
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| 129 | buf = OPENSSL_strdup(url);
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| 130 | if (!buf)
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| 131 | goto mem_err;
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| 132 |
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| 133 | /* Check for initial colon */
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| 134 | p = strchr(buf, ':');
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| 135 |
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| 136 | if (!p)
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| 137 | goto parse_err;
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| 138 |
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| 139 | *(p++) = '\0';
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| 140 |
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| 141 | if (strcmp(buf, "http") == 0) {
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| 142 | *pssl = 0;
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| 143 | port = "80";
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| 144 | } else if (strcmp(buf, "https") == 0) {
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| 145 | *pssl = 1;
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| 146 | port = "443";
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| 147 | } else
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| 148 | goto parse_err;
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| 149 |
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| 150 | /* Check for double slash */
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| 151 | if ((p[0] != '/') || (p[1] != '/'))
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| 152 | goto parse_err;
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| 153 |
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| 154 | p += 2;
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| 155 |
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| 156 | host = p;
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| 157 |
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| 158 | /* Check for trailing part of path */
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| 159 |
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| 160 | p = strchr(p, '/');
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| 161 |
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| 162 | if (!p)
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| 163 | *ppath = OPENSSL_strdup("/");
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| 164 | else {
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| 165 | *ppath = OPENSSL_strdup(p);
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| 166 | /* Set start of path to 0 so hostname is valid */
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| 167 | *p = '\0';
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| 168 | }
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| 169 |
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| 170 | if (!*ppath)
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| 171 | goto mem_err;
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| 172 |
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| 173 | p = host;
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| 174 | if (host[0] == '[') {
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| 175 | /* ipv6 literal */
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| 176 | host++;
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| 177 | p = strchr(host, ']');
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| 178 | if (!p)
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| 179 | goto parse_err;
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| 180 | *p = '\0';
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| 181 | p++;
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| 182 | }
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| 183 |
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| 184 | /* Look for optional ':' for port number */
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| 185 | if ((p = strchr(p, ':'))) {
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| 186 | *p = 0;
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| 187 | port = p + 1;
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| 188 | }
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| 189 |
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| 190 | *pport = OPENSSL_strdup(port);
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| 191 | if (!*pport)
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| 192 | goto mem_err;
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| 193 |
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| 194 | *phost = OPENSSL_strdup(host);
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| 195 |
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| 196 | if (!*phost)
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| 197 | goto mem_err;
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| 198 |
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| 199 | OPENSSL_free(buf);
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| 200 |
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| 201 | return 1;
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| 202 |
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| 203 | mem_err:
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| 204 | OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
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| 205 | goto err;
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| 206 |
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| 207 | parse_err:
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| 208 | OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
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| 209 |
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| 210 | err:
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| 211 | OPENSSL_free(buf);
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| 212 | OPENSSL_free(*ppath);
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| 213 | *ppath = NULL;
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| 214 | OPENSSL_free(*pport);
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| 215 | *pport = NULL;
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| 216 | OPENSSL_free(*phost);
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| 217 | *phost = NULL;
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| 218 | return 0;
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| 219 |
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| 220 | }
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| 221 |
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| 222 | IMPLEMENT_ASN1_DUP_FUNCTION(OCSP_CERTID)
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