MFC: r356963

Install man5 and man7 for OpenSSL.

1 files changed, 307 insertions, 0 deletions

diff --git a/secure/lib/libcrypto/man/man3/SSL_CTX_set0_CA_list.3 b/secure/lib/libcrypto/man/man3/SSL_CTX_set0_CA_list.3
new file mode 100644
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+.rm #[ #] #H #V #F C
+.\" ========================================================================
+.\"
+.IX Title "SSL_CTX_SET0_CA_LIST 3"
+.TH SSL_CTX_SET0_CA_LIST 3 "2019-09-10" "1.1.1d" "OpenSSL"
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+SSL_CTX_set_client_CA_list, SSL_set_client_CA_list, SSL_get_client_CA_list, SSL_CTX_get_client_CA_list, SSL_CTX_add_client_CA, SSL_add_client_CA, SSL_set0_CA_list, SSL_CTX_set0_CA_list, SSL_get0_CA_list, SSL_CTX_get0_CA_list, SSL_add1_to_CA_list, SSL_CTX_add1_to_CA_list, SSL_get0_peer_CA_list \&\- get or set CA list
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/ssl.h>
+\&
+\& void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *list);
+\& void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *list);
+\& STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
+\& STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx);
+\& int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *cacert);
+\& int SSL_add_client_CA(SSL *ssl, X509 *cacert);
+\&
+\& void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
+\& void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
+\& const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
+\& const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
+\& int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x);
+\& int SSL_add1_to_CA_list(SSL *ssl, const X509 *x);
+\&
+\& const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+The functions described here set and manage the list of \s-1CA\s0 names that are sent
+between two communicating peers.
+.PP
+For \s-1TLS\s0 versions 1.2 and earlier the list of \s-1CA\s0 names is only sent from the
+server to the client when requesting a client certificate. So any list of \s-1CA\s0
+names set is never sent from client to server and the list of \s-1CA\s0 names retrieved
+by \fBSSL_get0_peer_CA_list()\fR is always \fB\s-1NULL\s0\fR.
+.PP
+For \s-1TLS 1.3\s0 the list of \s-1CA\s0 names is sent using the \fBcertificate_authorities\fR
+extension and may be sent by a client (in the ClientHello message) or by
+a server (when requesting a certificate).
+.PP
+In most cases it is not necessary to set \s-1CA\s0 names on the client side. The list
+of \s-1CA\s0 names that are acceptable to the client will be sent in plaintext to the
+server. This has privacy implications and may also have performance implications
+if the list is large. This optional capability was introduced as part of TLSv1.3
+and therefore setting \s-1CA\s0 names on the client side will have no impact if that
+protocol version has been disabled. Most servers do not need this and so this
+should be avoided unless required.
+.PP
+The \*(L"client \s-1CA\s0 list\*(R" functions below only have an effect when called on the
+server side.
+.PP
+\&\fBSSL_CTX_set_client_CA_list()\fR sets the \fBlist\fR of CAs sent to the client when
+requesting a client certificate for \fBctx\fR. Ownership of \fBlist\fR is transferred
+to \fBctx\fR and it should not be freed by the caller.
+.PP
+\&\fBSSL_set_client_CA_list()\fR sets the \fBlist\fR of CAs sent to the client when
+requesting a client certificate for the chosen \fBssl\fR, overriding the
+setting valid for \fBssl\fR's \s-1SSL_CTX\s0 object. Ownership of \fBlist\fR is transferred
+to \fBs\fR and it should not be freed by the caller.
+.PP
+\&\fBSSL_CTX_get_client_CA_list()\fR returns the list of client CAs explicitly set for
+\&\fBctx\fR using \fBSSL_CTX_set_client_CA_list()\fR. The returned list should not be freed
+by the caller.
+.PP
+\&\fBSSL_get_client_CA_list()\fR returns the list of client CAs explicitly
+set for \fBssl\fR using \fBSSL_set_client_CA_list()\fR or \fBssl\fR's \s-1SSL_CTX\s0 object with
+\&\fBSSL_CTX_set_client_CA_list()\fR, when in server mode. In client mode,
+SSL_get_client_CA_list returns the list of client CAs sent from the server, if
+any. The returned list should not be freed by the caller.
+.PP
+\&\fBSSL_CTX_add_client_CA()\fR adds the \s-1CA\s0 name extracted from \fBcacert\fR to the
+list of CAs sent to the client when requesting a client certificate for
+\&\fBctx\fR.
+.PP
+\&\fBSSL_add_client_CA()\fR adds the \s-1CA\s0 name extracted from \fBcacert\fR to the
+list of CAs sent to the client when requesting a client certificate for
+the chosen \fBssl\fR, overriding the setting valid for \fBssl\fR's \s-1SSL_CTX\s0 object.
+.PP
+\&\fBSSL_get0_peer_CA_list()\fR retrieves the list of \s-1CA\s0 names (if any) the peer
+has sent. This can be called on either the server or the client side. The
+returned list should not be freed by the caller.
+.PP
+The \*(L"generic \s-1CA\s0 list\*(R" functions below are very similar to the \*(L"client \s-1CA\s0
+list\*(R" functions except that they have an effect on both the server and client
+sides. The lists of \s-1CA\s0 names managed are separate \- so you cannot (for example)
+set \s-1CA\s0 names using the \*(L"client \s-1CA\s0 list\*(R" functions and then get them using the
+\&\*(L"generic \s-1CA\s0 list\*(R" functions. Where a mix of the two types of functions has been
+used on the server side then the \*(L"client \s-1CA\s0 list\*(R" functions take precedence.
+Typically, on the server side, the \*(L"client \s-1CA\s0 list \*(R" functions should be used in
+preference. As noted above in most cases it is not necessary to set \s-1CA\s0 names on
+the client side.
+.PP
+\&\fBSSL_CTX_set0_CA_list()\fR sets the list of CAs to be sent to the peer to
+\&\fBname_list\fR. Ownership of \fBname_list\fR is transferred to \fBctx\fR and
+it should not be freed by the caller.
+.PP
+\&\fBSSL_set0_CA_list()\fR sets the list of CAs to be sent to the peer to \fBname_list\fR
+overriding any list set in the parent \fB\s-1SSL_CTX\s0\fR of \fBs\fR. Ownership of
+\&\fBname_list\fR is transferred to \fBs\fR and it should not be freed by the caller.
+.PP
+\&\fBSSL_CTX_get0_CA_list()\fR retrieves any previously set list of CAs set for
+\&\fBctx\fR. The returned list should not be freed by the caller.
+.PP
+\&\fBSSL_get0_CA_list()\fR retrieves any previously set list of CAs set for
+\&\fBs\fR or if none are set the list from the parent \fB\s-1SSL_CTX\s0\fR is retrieved. The
+returned list should not be freed by the caller.
+.PP
+\&\fBSSL_CTX_add1_to_CA_list()\fR appends the \s-1CA\s0 subject name extracted from \fBx\fR to the
+list of CAs sent to peer for \fBctx\fR.
+.PP
+\&\fBSSL_add1_to_CA_list()\fR appends the \s-1CA\s0 subject name extracted from \fBx\fR to the
+list of CAs sent to the peer for \fBs\fR, overriding the setting in the parent
+\&\fB\s-1SSL_CTX\s0\fR.
+.SH "NOTES"
+.IX Header "NOTES"
+When a \s-1TLS/SSL\s0 server requests a client certificate (see
+\&\fB\fBSSL_CTX_set_verify\fB\|(3)\fR), it sends a list of CAs, for which it will accept
+certificates, to the client.
+.PP
+This list must explicitly be set using \fBSSL_CTX_set_client_CA_list()\fR or
+\&\fBSSL_CTX_set0_CA_list()\fR for \fBctx\fR and \fBSSL_set_client_CA_list()\fR or
+\&\fBSSL_set0_CA_list()\fR for the specific \fBssl\fR. The list specified
+overrides the previous setting. The CAs listed do not become trusted (\fBlist\fR
+only contains the names, not the complete certificates); use
+\&\fBSSL_CTX_load_verify_locations\fR\|(3) to additionally load them for verification.
+.PP
+If the list of acceptable CAs is compiled in a file, the
+\&\fBSSL_load_client_CA_file\fR\|(3) function can be used to help to import the
+necessary data.
+.PP
+\&\fBSSL_CTX_add_client_CA()\fR, \fBSSL_CTX_add1_to_CA_list()\fR, \fBSSL_add_client_CA()\fR and
+\&\fBSSL_add1_to_CA_list()\fR can be used to add additional items the list of CAs. If no
+list was specified before using \fBSSL_CTX_set_client_CA_list()\fR,
+\&\fBSSL_CTX_set0_CA_list()\fR, \fBSSL_set_client_CA_list()\fR or \fBSSL_set0_CA_list()\fR, a
+new \s-1CA\s0 list for \fBctx\fR or \fBssl\fR (as appropriate) is opened.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fBSSL_CTX_set_client_CA_list()\fR, \fBSSL_set_client_CA_list()\fR,
+\&\fBSSL_CTX_set_client_CA_list()\fR, \fBSSL_set_client_CA_list()\fR, \fBSSL_CTX_set0_CA_list()\fR
+and \fBSSL_set0_CA_list()\fR do not return a value.
+.PP
+\&\fBSSL_CTX_get_client_CA_list()\fR, \fBSSL_get_client_CA_list()\fR, \fBSSL_CTX_get0_CA_list()\fR
+and \fBSSL_get0_CA_list()\fR return a stack of \s-1CA\s0 names or \fB\s-1NULL\s0\fR is no \s-1CA\s0 names are
+set.
+.PP
+\&\fBSSL_CTX_add_client_CA()\fR,\fBSSL_add_client_CA()\fR, \fBSSL_CTX_add1_to_CA_list()\fR and
+\&\fBSSL_add1_to_CA_list()\fR return 1 for success and 0 for failure.
+.PP
+\&\fBSSL_get0_peer_CA_list()\fR returns a stack of \s-1CA\s0 names sent by the peer or
+\&\fB\s-1NULL\s0\fR or an empty stack if no list was sent.
+.SH "EXAMPLES"
+.IX Header "EXAMPLES"
+Scan all certificates in \fBCAfile\fR and list them as acceptable CAs:
+.PP
+.Vb 1
+\& SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
+.Ve
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBssl\fR\|(7),
+\&\fBSSL_load_client_CA_file\fR\|(3),
+\&\fBSSL_CTX_load_verify_locations\fR\|(3)
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright 2000\-2019 The OpenSSL Project Authors. All Rights Reserved.
+.PP
+Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file \s-1LICENSE\s0 in the source distribution or at
+<https://www.openssl.org/source/license.html>.