263 lines
9.3 KiB
Plaintext
263 lines
9.3 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "OCSP_SENDREQ_NEW 3ossl"
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.TH OCSP_SENDREQ_NEW 3ossl "2024-01-30" "3.2.1" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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OCSP_REQ_CTX,
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OCSP_sendreq_new,
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OCSP_sendreq_nbio,
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OCSP_sendreq_bio,
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OCSP_REQ_CTX_i2d,
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OCSP_REQ_CTX_add1_header,
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OCSP_REQ_CTX_free,
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OCSP_set_max_response_length,
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OCSP_REQ_CTX_set1_req
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\&\- OCSP responder query functions
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/ocsp.h>
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\&
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\& OSSL_HTTP_REQ_CTX *OCSP_sendreq_new(BIO *io, const char *path,
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\& const OCSP_REQUEST *req, int buf_size);
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\& OCSP_RESPONSE *OCSP_sendreq_bio(BIO *io, const char *path, OCSP_REQUEST *req);
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.Ve
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.PP
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The following functions have been deprecated since OpenSSL 3.0, and can be
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hidden entirely by defining \fB\s-1OPENSSL_API_COMPAT\s0\fR with a suitable version value,
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see \fIopenssl_user_macros\fR\|(7):
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.PP
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.Vb 8
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\& typedef OSSL_HTTP_REQ_CTX OCSP_REQ_CTX;
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\& int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OSSL_HTTP_REQ_CTX *rctx);
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\& int OCSP_REQ_CTX_i2d(OCSP_REQ_CT *rctx, const ASN1_ITEM *it, ASN1_VALUE *req);
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\& int OCSP_REQ_CTX_add1_header(OCSP_REQ_CT *rctx,
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\& const char *name, const char *value);
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\& void OCSP_REQ_CTX_free(OCSP_REQ_CTX *rctx);
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\& void OCSP_set_max_response_length(OCSP_REQ_CT *rctx, unsigned long len);
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\& int OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX *rctx, const OCSP_REQUEST *req);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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These functions perform an \s-1OCSP POST\s0 request / response transfer over \s-1HTTP,\s0
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using the \s-1HTTP\s0 request functions described in \s-1\fIOSSL_HTTP_REQ_CTX\s0\fR\|(3).
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.PP
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The function \fIOCSP_sendreq_new()\fR builds a complete \fB\s-1OSSL_HTTP_REQ_CTX\s0\fR structure
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with the \fB\s-1BIO\s0\fR \fIio\fR to be used for requests and response, the \s-1URL\s0 path \fIpath\fR,
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optionally the \s-1OCSP\s0 request \fIreq\fR, and a response header maximum line length
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of \fIbuf_size\fR. If \fIbuf_size\fR is zero a default value of 4KiB is used.
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The \fIreq\fR may be set to \s-1NULL\s0 and provided later using \fIOCSP_REQ_CTX_set1_req()\fR
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or \fIOSSL_HTTP_REQ_CTX_set1_req\fR\|(3).
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The \fIio\fR and \fIpath\fR arguments to \fIOCSP_sendreq_new()\fR correspond to the
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components of the \s-1URL.\s0
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For example if the responder \s-1URL\s0 is \f(CW\*(C`http://example.com/ocspreq\*(C'\fR the \s-1BIO
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\&\s0\fIio\fR should haven been connected to host \f(CW\*(C`example.com\*(C'\fR on port 80 and \fIpath\fR
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should be set to \f(CW\*(C`/ocspreq\*(C'\fR.
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.PP
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\&\fIOCSP_sendreq_nbio()\fR attempts to send the request prepared in \fIrctx\fR
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and to gather the response via \s-1HTTP,\s0 using the \s-1BIO \s0\fIio\fR and \fIpath\fR
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that were given when calling \fIOCSP_sendreq_new()\fR.
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If the operation gets completed it assigns the response,
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a pointer to a \fB\s-1OCSP_RESPONSE\s0\fR structure, in \fI*presp\fR.
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The function may need to be called again if its result is \-1, which indicates
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\&\fIBIO_should_retry\fR\|(3). In such a case it is advisable to sleep a little in
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between, using \fIBIO_wait\fR\|(3) on the read \s-1BIO\s0 to prevent a busy loop.
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.PP
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\&\fIOCSP_sendreq_bio()\fR combines \fIOCSP_sendreq_new()\fR with as many calls of
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\&\fIOCSP_sendreq_nbio()\fR as needed and then \fIOCSP_REQ_CTX_free()\fR, with a
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response header maximum line length 4k. It waits indefinitely on a response.
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It does not support setting a timeout or adding headers and is retained
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for compatibility; use \fIOSSL_HTTP_transfer\fR\|(3) instead.
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.PP
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OCSP_REQ_CTX_i2d(rctx, it, req) is equivalent to the following:
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.PP
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.Vb 1
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\& OSSL_HTTP_REQ_CTX_set1_req(rctx, "application/ocsp\-request", it, req)
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.Ve
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.PP
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OCSP_REQ_CTX_set1_req(rctx, req) is equivalent to the following:
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.PP
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.Vb 3
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\& OSSL_HTTP_REQ_CTX_set1_req(rctx, "application/ocsp\-request",
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\& ASN1_ITEM_rptr(OCSP_REQUEST),
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\& (const ASN1_VALUE *)req)
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.Ve
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.PP
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The deprecated type and the remaining deprecated functions
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have been superseded by the following equivalents:
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\&\fB\s-1OCSP_REQ_CTX\s0\fR by \s-1\fIOSSL_HTTP_REQ_CTX\s0\fR\|(3),
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\&\fIOCSP_REQ_CTX_add1_header()\fR by \fIOSSL_HTTP_REQ_CTX_add1_header\fR\|(3),
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\&\fIOCSP_REQ_CTX_free()\fR by \fIOSSL_HTTP_REQ_CTX_free\fR\|(3), and
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\&\fIOCSP_set_max_response_length()\fR by
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\&\fIOSSL_HTTP_REQ_CTX_set_max_response_length\fR\|(3).
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIOCSP_sendreq_new()\fR returns a valid \fB\s-1OSSL_HTTP_REQ_CTX\s0\fR structure or \s-1NULL\s0
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if an error occurred.
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.PP
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\&\fIOCSP_sendreq_nbio()\fR returns 1 for success, 0 on error, \-1 if retry is needed.
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.PP
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\&\fIOCSP_sendreq_bio()\fR returns the \fB\s-1OCSP_RESPONSE\s0\fR structure sent by the
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responder or \s-1NULL\s0 if an error occurred.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\s-1\fIOSSL_HTTP_REQ_CTX\s0\fR\|(3), \fIOSSL_HTTP_transfer\fR\|(3),
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\&\fIOCSP_cert_to_id\fR\|(3),
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\&\fIOCSP_request_add1_nonce\fR\|(3),
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\&\fIOCSP_REQUEST_new\fR\|(3),
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\&\fIOCSP_resp_find_status\fR\|(3),
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\&\fIOCSP_response_status\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fB\s-1OCSP_REQ_CTX\s0\fR,
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\&\fIOCSP_REQ_CTX_i2d()\fR,
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\&\fIOCSP_REQ_CTX_add1_header()\fR,
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\&\fIOCSP_REQ_CTX_free()\fR,
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\&\fIOCSP_set_max_response_length()\fR,
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and \fIOCSP_REQ_CTX_set1_req()\fR
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were deprecated in OpenSSL 3.0.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2015\-2022 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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