Chunk 8 of CMP contribution to OpenSSL: CMP server and cmp_mock_srv.c for testing

Certificate Management Protocol (CMP, RFC 4210) extension to OpenSSL
Also includes CRMF (RFC 4211) and HTTP transfer (RFC 6712).
Adds the CMP and CRMF API to libcrypto and the "cmp" app to the CLI.
Adds extensive documentation and tests.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11142)

1 files changed, 85 insertions, 0 deletions

diff --git a/doc/internal/man3/ossl_cmp_mock_srv_new.pod b/doc/internal/man3/ossl_cmp_mock_srv_new.pod
new file mode 100644
index 0000000000..da1f44b391
--- /dev/null
+++ b/doc/internal/man3/ossl_cmp_mock_srv_new.pod
@@ -0,0 +1,85 @@
+=pod
+
+=head1 NAME
+
+ossl_cmp_mock_srv_new,
+ossl_cmp_mock_srv_free,
+ossl_cmp_mock_srv_set1_certOut,
+ossl_cmp_mock_srv_set1_chainOut,
+ossl_cmp_mock_srv_set1_caPubsOut,
+ossl_cmp_mock_srv_set_statusInfo,
+ossl_cmp_mock_srv_set_send_error,
+ossl_cmp_mock_srv_set_pollCount,
+ossl_cmp_mock_srv_set_checkAfterTime
+- functions used for testing with CMP mock server
+
+=head1 SYNOPSIS
+
+ #include <openssl/cmp.h>
+
+ OSSL_CMP_SRV_CTX *ossl_cmp_mock_srv_new(void);
+ void ossl_cmp_mock_srv_free(OSSL_CMP_SRV_CTX *srv_ctx);
+
+ int ossl_cmp_mock_srv_set1_certOut(OSSL_CMP_SRV_CTX *srv_ctx, X509 *cert);
+ int ossl_cmp_mock_srv_set1_chainOut(OSSL_CMP_SRV_CTX *srv_ctx,
+                                     STACK_OF(X509) *chain);
+ int ossl_cmp_mock_srv_set1_caPubsOut(OSSL_CMP_SRV_CTX *srv_ctx,
+                                      STACK_OF(X509) *caPubs);
+ int ossl_cmp_mock_srv_set_statusInfo(OSSL_CMP_SRV_CTX *srv_ctx, int status,
+                                      int fail_info, const char *text);
+ int ossl_cmp_mock_srv_set_send_error(OSSL_CMP_SRV_CTX *srv_ctx, int val);
+ int ossl_cmp_mock_srv_set_pollCount(OSSL_CMP_SRV_CTX *srv_ctx, int count);
+ int ossl_cmp_mock_srv_set_checkAfterTime(OSSL_CMP_SRV_CTX *srv_ctx, int sec);
+
+=head1 DESCRIPTION
+
+ossl_cmp_mock_srv_new() allocates the contexts for the CMP mock server.
+
+ossl_cmp_mock_srv_free() deallocates the contexts for the CMP mock server.
+
+OSSL_CMP_SRV_CTX_set1_certOut() sets the certificate to be returned in
+cp/ip/kup.
+
+OSSL_CMP_SRV_CTX_set1_chainOut() sets the certificate chain to be added to
+the extraCerts in a cp/ip/kup.
+It should to useful to validate B<certOut>.
+
+OSSL_CMP_SRV_CTX_set1_caPubsOut() sets the caPubs to be returned in an ip.
+
+OSSL_CMP_SRV_CTX_set_statusInfo() sets the status info to be returned.
+
+OSSL_CMP_SRV_CTX_set_send_error() enables enforcement of error responses.
+
+OSSL_CMP_SRV_CTX_set_pollCount() sets the number of polls before cert response.
+
+OSSL_CMP_SRV_CTX_set_checkAfterTime() sets the number of seconds
+the client should wait for the next poll.
+
+
+=head1 NOTES
+
+CMP is defined in RFC 4210 (and CRMF in RFC 4211).
+
+=head1 RETURN VALUES
+
+ossl_cmp_mock_srv() returns a B<OSSL_CMP_SRV_CTX> structure on success,
+NULL on error.
+
+ossl_cmp_mock_srv_free() does not return a value.
+
+All other functions return 1 on success, 0 on error.
+
+=head1 HISTORY
+
+The OpenSSL CMP support was added in OpenSSL 3.0.
+
+=head1 COPYRIGHT
+
+Copyright 2007-2020 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (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
+L<https://www.openssl.org/source/license.html>.
+
+=cut