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981d129a56
Explicitly documents that *_free(NULL) does nothing. Fixes two cases where that wasn't true. Fixes #24675. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Sasa Nedvedicky <sashan@openssl.org> (Merged from https://github.com/openssl/openssl/pull/24735)
198 lines
9.2 KiB
Plaintext
198 lines
9.2 KiB
Plaintext
=pod
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=head1 NAME
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OSSL_CMP_SRV_process_request,
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OSSL_CMP_CTX_server_perform,
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OSSL_CMP_SRV_CTX_new,
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OSSL_CMP_SRV_CTX_free,
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OSSL_CMP_SRV_cert_request_cb_t,
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OSSL_CMP_SRV_rr_cb_t,
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OSSL_CMP_SRV_certConf_cb_t,
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OSSL_CMP_SRV_genm_cb_t,
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OSSL_CMP_SRV_error_cb_t,
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OSSL_CMP_SRV_pollReq_cb_t,
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OSSL_CMP_SRV_CTX_init,
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OSSL_CMP_SRV_delayed_delivery_cb_t,
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OSSL_CMP_SRV_clean_transaction_cb_t,
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OSSL_CMP_SRV_CTX_init_trans,
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OSSL_CMP_SRV_CTX_get0_cmp_ctx,
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OSSL_CMP_SRV_CTX_get0_custom_ctx,
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OSSL_CMP_SRV_CTX_set_send_unprotected_errors,
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OSSL_CMP_SRV_CTX_set_accept_unprotected,
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OSSL_CMP_SRV_CTX_set_accept_raverified,
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OSSL_CMP_SRV_CTX_set_grant_implicit_confirm
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- generic functions to set up and control a CMP server
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=head1 SYNOPSIS
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#include <openssl/cmp.h>
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OSSL_CMP_MSG *OSSL_CMP_SRV_process_request(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req);
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OSSL_CMP_MSG *OSSL_CMP_CTX_server_perform(OSSL_CMP_CTX *client_ctx,
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const OSSL_CMP_MSG *req);
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OSSL_CMP_SRV_CTX *OSSL_CMP_SRV_CTX_new(OSSL_LIB_CTX *libctx, const char *propq);
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void OSSL_CMP_SRV_CTX_free(OSSL_CMP_SRV_CTX *srv_ctx);
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typedef OSSL_CMP_PKISI *(*OSSL_CMP_SRV_cert_request_cb_t)(
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OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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int certReqId,
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const OSSL_CRMF_MSG *crm,
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const X509_REQ *p10cr,
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X509 **certOut,
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STACK_OF(X509) **chainOut,
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STACK_OF(X509) **caPubs);
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typedef OSSL_CMP_PKISI *(*OSSL_CMP_SRV_rr_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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const X509_NAME *issuer,
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const ASN1_INTEGER *serial);
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typedef int (*OSSL_CMP_SRV_genm_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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STACK_OF(OSSL_CMP_ITAV) *in,
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STACK_OF(OSSL_CMP_ITAV) **out);
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typedef void (*OSSL_CMP_SRV_error_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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const OSSL_CMP_PKISI *statusInfo,
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const ASN1_INTEGER *errorCode,
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const OSSL_CMP_PKIFREETEXT *errorDetails);
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typedef int (*OSSL_CMP_SRV_certConf_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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int certReqId,
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const ASN1_OCTET_STRING *certHash,
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const OSSL_CMP_PKISI *si);
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typedef int (*OSSL_CMP_SRV_pollReq_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req,
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int certReqId,
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OSSL_CMP_MSG **certReq,
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int64_t *check_after);
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int OSSL_CMP_SRV_CTX_init(OSSL_CMP_SRV_CTX *srv_ctx, void *custom_ctx,
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OSSL_CMP_SRV_cert_request_cb_t process_cert_request,
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OSSL_CMP_SRV_rr_cb_t process_rr,
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OSSL_CMP_SRV_genm_cb_t process_genm,
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OSSL_CMP_SRV_error_cb_t process_error,
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OSSL_CMP_SRV_certConf_cb_t process_certConf,
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OSSL_CMP_SRV_pollReq_cb_t process_pollReq);
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typedef int (*OSSL_CMP_SRV_delayed_delivery_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const OSSL_CMP_MSG *req);
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typedef int (*OSSL_CMP_SRV_clean_transaction_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
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const ASN1_OCTET_STRING *id);
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int OSSL_CMP_SRV_CTX_init_trans(OSSL_CMP_SRV_CTX *srv_ctx,
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OSSL_CMP_SRV_delayed_delivery_cb_t delay,
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OSSL_CMP_SRV_clean_transaction_cb_t clean);
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OSSL_CMP_CTX *OSSL_CMP_SRV_CTX_get0_cmp_ctx(const OSSL_CMP_SRV_CTX *srv_ctx);
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void *OSSL_CMP_SRV_CTX_get0_custom_ctx(const OSSL_CMP_SRV_CTX *srv_ctx);
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int OSSL_CMP_SRV_CTX_set_send_unprotected_errors(OSSL_CMP_SRV_CTX *srv_ctx,
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int val);
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int OSSL_CMP_SRV_CTX_set_accept_unprotected(OSSL_CMP_SRV_CTX *srv_ctx, int val);
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int OSSL_CMP_SRV_CTX_set_accept_raverified(OSSL_CMP_SRV_CTX *srv_ctx, int val);
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int OSSL_CMP_SRV_CTX_set_grant_implicit_confirm(OSSL_CMP_SRV_CTX *srv_ctx,
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int val);
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=head1 DESCRIPTION
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OSSL_CMP_SRV_process_request() implements the generic aspects of a CMP server.
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Its arguments are the B<OSSL_CMP_SRV_CTX> I<srv_ctx> and the CMP request message
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I<req>. It does the typical generic checks on I<req>, calls
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the respective callback function (if present) for more specific processing,
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and then assembles a result message, which may be a CMP error message.
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If after return of the function the expression
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I<OSSL_CMP_CTX_get_status(OSSL_CMP_SRV_CTX_get0_cmp_ctx(srv_ctx))> yields -1
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then the function has closed the current transaction,
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which may be due to normal successful end of the transaction or due to an error.
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OSSL_CMP_CTX_server_perform() is an interface to
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OSSL_CMP_SRV_process_request() that can be used by a CMP client
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in the same way as L<OSSL_CMP_MSG_http_perform(3)>.
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The B<OSSL_CMP_SRV_CTX> must be set as I<transfer_cb_arg> of I<client_ctx>.
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OSSL_CMP_SRV_CTX_new() creates and initializes an B<OSSL_CMP_SRV_CTX> structure
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associated with the library context I<libctx> and property query string
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I<propq>, both of which may be NULL to select the defaults.
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OSSL_CMP_SRV_CTX_free() deletes the given I<srv_ctx>.
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If the argument is NULL, nothing is done.
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OSSL_CMP_SRV_CTX_init() sets in the given I<srv_ctx> a custom server context
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pointer as well as callback functions performing the specific processing of CMP
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certificate requests, revocation requests, certificate confirmation requests,
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general messages, error messages, and poll requests.
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All arguments except I<srv_ctx> may be NULL.
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If a callback for some message type is not given this means that the respective
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type of CMP message is not supported by the server.
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OSSL_CMP_SRV_CTX_init_trans() sets in I<srv_ctx> the optional callback
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functions for initiating delayed delivery and cleaning up a transaction.
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If the <delay> function is NULL then delivery of responses is never delayed.
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Otherwise I<delay> takes a custom server context and a request message as input.
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It must return 1 if delivery of the respective response shall be delayed,
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0 if not, and -1 on error.
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If the <clean> function is NULL then no specific cleanup is performed.
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Otherwise I<clean> takes a custom server context and a transaction ID pointer
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as input, where the pointer is NULL in case a new transaction is being started
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and otherwise provides the ID of the transaction being terminated.
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The <clean> function should reset the respective portions of the state
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and free related memory.
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It must return 1 on success and 0 on error.
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OSSL_CMP_SRV_CTX_get0_cmp_ctx() returns the B<OSSL_CMP_CTX> from the I<srv_ctx>.
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OSSL_CMP_SRV_CTX_get0_custom_ctx() returns the custom server context from
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I<srv_ctx> that has been set using OSSL_CMP_SRV_CTX_init().
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OSSL_CMP_SRV_CTX_set_send_unprotected_errors() enables sending error messages
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and other forms of negative responses unprotected.
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OSSL_CMP_SRV_CTX_set_accept_unprotected() enables acceptance of requests
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without protection of with invalid protection.
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OSSL_CMP_SRV_CTX_set_accept_raverified() enables acceptance of ir/cr/kur
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messages with POPO 'RAVerified'.
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OSSL_CMP_SRV_CTX_set_grant_implicit_confirm() enables granting implicit
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confirmation of newly enrolled certificates if requested.
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=head1 NOTES
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CMP is defined in RFC 4210 (and CRMF in RFC 4211).
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So far the CMP server implementation is limited to one request per CMP message
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(and consequently to at most one response component per CMP message).
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=head1 RETURN VALUES
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OSSL_CMP_SRV_CTX_new() returns a B<OSSL_CMP_SRV_CTX> structure on success,
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NULL on error.
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OSSL_CMP_SRV_CTX_free() does not return a value.
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OSSL_CMP_SRV_CTX_get0_cmp_ctx() returns a B<OSSL_CMP_CTX> structure on success,
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NULL on error.
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OSSL_CMP_SRV_CTX_get0_custom_ctx() returns the custom server context
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that has been set using OSSL_CMP_SRV_CTX_init().
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All other functions return 1 on success, 0 on error.
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=head1 HISTORY
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The OpenSSL CMP support was added in OpenSSL 3.0.
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OSSL_CMP_SRV_CTX_init_trans()
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supporting delayed delivery of all types of response messages
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was added in OpenSSL 3.3.
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=head1 COPYRIGHT
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Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). 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 LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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