xref: /openssl/crypto/ocsp/ocsp_http.c (revision f99b3495)
1 /*
2  * Copyright 2001-2021 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 <openssl/ocsp.h>
11 #include <openssl/http.h>
12 
13 #ifndef OPENSSL_NO_OCSP
14 
OCSP_sendreq_new(BIO * io,const char * path,const OCSP_REQUEST * req,int buf_size)15 OSSL_HTTP_REQ_CTX *OCSP_sendreq_new(BIO *io, const char *path,
16                                     const OCSP_REQUEST *req, int buf_size)
17 {
18     OSSL_HTTP_REQ_CTX *rctx = OSSL_HTTP_REQ_CTX_new(io, io, buf_size);
19 
20     if (rctx == NULL)
21         return NULL;
22     /*-
23      * by default:
24      * no bio_update_fn (and consequently no arg)
25      * no ssl
26      * no proxy
27      * no timeout (blocking indefinitely)
28      * no expected content type
29      * max_resp_len = 100 KiB
30      */
31     if (!OSSL_HTTP_REQ_CTX_set_request_line(rctx, 1 /* POST */,
32                                             NULL, NULL, path))
33         goto err;
34     /* by default, no extra headers */
35     if (!OSSL_HTTP_REQ_CTX_set_expected(rctx,
36                                         NULL /* content_type */, 1 /* asn1 */,
37                                         0 /* timeout */, 0 /* keep_alive */))
38         goto err;
39     if (req != NULL
40         && !OSSL_HTTP_REQ_CTX_set1_req(rctx, "application/ocsp-request",
41                                        ASN1_ITEM_rptr(OCSP_REQUEST),
42                                        (const ASN1_VALUE *)req))
43         goto err;
44     return rctx;
45 
46  err:
47     OSSL_HTTP_REQ_CTX_free(rctx);
48     return NULL;
49 }
50 
OCSP_sendreq_bio(BIO * b,const char * path,OCSP_REQUEST * req)51 OCSP_RESPONSE *OCSP_sendreq_bio(BIO *b, const char *path, OCSP_REQUEST *req)
52 {
53     OCSP_RESPONSE *resp = NULL;
54     OSSL_HTTP_REQ_CTX *ctx;
55     BIO *mem;
56 
57     ctx = OCSP_sendreq_new(b, path, req, 0 /* default buf_size */);
58     if (ctx == NULL)
59         return NULL;
60     mem = OSSL_HTTP_REQ_CTX_exchange(ctx);
61     /* ASN1_item_d2i_bio handles NULL bio gracefully */
62     resp = (OCSP_RESPONSE *)ASN1_item_d2i_bio(ASN1_ITEM_rptr(OCSP_RESPONSE),
63                                               mem, NULL);
64 
65     OSSL_HTTP_REQ_CTX_free(ctx);
66     return resp;
67 }
68 #endif /* !defined(OPENSSL_NO_OCSP) */
69