From efc80f802df2fbe1374ed12a9ed74ed5e424ab55 Mon Sep 17 00:00:00 2001
From: job <job@openbsd.org>
Date: Thu, 16 Mar 2023 15:21:44 +0000
Subject: [PATCH] Add X509_STORE_{set,get}_check_issued and
 X509_STORE_CTX_get_check_issued to manpage

with and OK tb@
---
 lib/libcrypto/man/X509_STORE_CTX_set_verify.3 | 78 ++++++++++++++++++-
 1 file changed, 75 insertions(+), 3 deletions(-)

diff --git a/lib/libcrypto/man/X509_STORE_CTX_set_verify.3 b/lib/libcrypto/man/X509_STORE_CTX_set_verify.3
index 1c7797bbfcb..a7c8954416f 100644
--- a/lib/libcrypto/man/X509_STORE_CTX_set_verify.3
+++ b/lib/libcrypto/man/X509_STORE_CTX_set_verify.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: X509_STORE_CTX_set_verify.3,v 1.3 2022/11/16 14:55:40 schwarze Exp $
+.\" $OpenBSD: X509_STORE_CTX_set_verify.3,v 1.4 2023/03/16 15:21:44 job Exp $
 .\"
 .\" Copyright (c) 2021, 2022 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: November 16 2022 $
+.Dd $Mdocdate: March 16 2023 $
 .Dt X509_STORE_CTX_SET_VERIFY 3
 .Os
 .Sh NAME
@@ -23,7 +23,10 @@
 .Nm X509_STORE_CTX_get_verify ,
 .Nm X509_STORE_set_verify ,
 .Nm X509_STORE_set_verify_func ,
-.Nm X509_STORE_get_verify
+.Nm X509_STORE_get_verify ,
+.Nm X509_STORE_set_check_issued ,
+.Nm X509_STORE_get_check_issued ,
+.Nm X509_STORE_CTX_get_check_issued
 .Nd user-defined certificate chain verification function
 .Sh SYNOPSIS
 .In openssl/x509_vfy.h
@@ -54,6 +57,25 @@
 .Fo X509_STORE_get_verify
 .Fa "X509_STORE_CTX *ctx"
 .Fc
+.Ft typedef int
+.Fo "(*X509_STORE_CTX_check_issued_fn)
+.Fa "X509_STORE_CTX *ctx"
+.Fa "X509 *subject"
+.Fa "X509 *issuer"
+.Fc
+.Ft void
+.Fo X509_STORE_set_check_issued
+.Fa "X509_STORE *store"
+.Fa "X509_STORE_CTX_check_issued_fn check_issued"
+.Fc
+.Ft X509_STORE_CTX_check_issued_fn
+.Fo X509_STORE_get_check_issued
+.Fa "X509_STORE *store"
+.Fc
+.Ft X509_STORE_CTX_check_issued_fn
+.Fo X509_STORE_CTX_get_check_issued
+.Fa "X509_STORE_CTX *ctx"
+.Fc
 .Sh DESCRIPTION
 .Fn X509_STORE_CTX_set_verify
 configures
@@ -97,6 +119,27 @@ is later passed as an argument to
 is an alias for
 .Fn X509_STORE_set_verify
 implemented as a macro.
+.Pp
+.Fn X509_STORE_set_check_issued
+saves the function pointer
+.Fa check_issued
+in the given
+.Fa store
+object.
+That pointer will be copied to an
+.Vt X509_STORE_CTX
+object when
+.Fa store
+is later passed as an argument to
+.Fn X509_STORE_CTX_init 3 .
+.Pp
+The
+.Fa check_issued
+function provided by the user should check whether a given certificate
+.Fa subject
+was issued using the CA certificate
+.Fa issuer ,
+and must return 0 on failure and 1 on success.
 .Sh RETURN VALUES
 .Fn X509_STORE_CTX_verify_fn
 is supposed to return 1 to indicate that the chain is valid
@@ -120,6 +163,27 @@ or
 .Dv NULL
 if that function was not called on the
 .Fa store .
+.Pp
+.Fn X509_STORE_get_check_issued
+returns the function pointer previously set with
+.Fn X509_STORE_set_check_issued ,
+or
+.Dv NULL
+if that function was not called on the
+.Fa store .
+.Pp
+.Fn X509_STORE_CTX_get_check_issued
+returns the
+.Fn check_issued
+function set on the
+.Vt X509_STORE_CTX .
+This is either the
+.Fn check_issued
+function inherited from the
+.Fa store
+used in
+.Xr X509_STORE_CTX_init 3
+or the library's default implementation.
 .Sh SEE ALSO
 .Xr X509_STORE_CTX_init 3 ,
 .Xr X509_STORE_CTX_set_error 3 ,
@@ -130,6 +194,7 @@ if that function was not called on the
 .Xr X509_STORE_set_verify_cb 3 ,
 .Xr X509_verify_cert 3 ,
 .Xr X509_VERIFY_PARAM_set_flags 3
+.Xr X509_check_issued 3
 .Sh HISTORY
 .Fn X509_STORE_set_verify_func
 first appeared in SSLeay 0.8.0 and has been available since
@@ -147,3 +212,10 @@ and
 .Fn X509_STORE_get_verify
 first appeared in OpenSSL 1.1.0 and have been available since
 .Ox 7.2 .
+.Pp
+.Fn X509_STORE_set_check_issued ,
+.Fn X509_STORE_get_check_issued ,
+and
+.Fn X509_STORE_CTX_get_check_issued
+first appeared in OpenSSL 1.1.0 and have been available since
+.Ox 7.3 .
-- 
2.20.1