5 files changed, 179 insertions, 9 deletions
diff --git a/lib/libcrypto/man/Makefile b/lib/libcrypto/man/Makefile
index 2e608bffbb7..88610412cc1 100644
--- a/lib/libcrypto/man/Makefile
+++ b/lib/libcrypto/man/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.224 2021/12/13 13:46:09 schwarze Exp $
+# $OpenBSD: Makefile,v 1.225 2021/12/13 17:24:39 schwarze Exp $
 
 .include <bsd.own.mk>
 
@@ -281,6 +281,7 @@ MAN=	\
 	SMIME_crlf_copy.3 \
 	SMIME_read_CMS.3 \
 	SMIME_read_PKCS7.3 \
+	SMIME_write_ASN1.3 \
 	SMIME_write_CMS.3 \
 	SMIME_write_PKCS7.3 \
 	STACK_OF.3 \
diff --git a/lib/libcrypto/man/SMIME_write_ASN1.3 b/lib/libcrypto/man/SMIME_write_ASN1.3
new file mode 100644
index 00000000000..971cd226dd6
--- /dev/null
+++ b/lib/libcrypto/man/SMIME_write_ASN1.3
@@ -0,0 +1,166 @@
+.\" $OpenBSD: SMIME_write_ASN1.3,v 1.1 2021/12/13 17:24:39 schwarze Exp $
+.\"
+.\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: December 13 2021 $
+.Dt SMIME_WRITE_ASN1 3
+.Os
+.Sh NAME
+.Nm SMIME_write_ASN1
+.Nd generate an S/MIME message
+.Sh SYNOPSIS
+.In openssl/asn1.h
+.Ft int
+.Fo SMIME_write_ASN1
+.Fa "BIO *out_bio"
+.Fa "ASN1_VALUE *val_in"
+.Fa "BIO *in_bio"
+.Fa "int flags"
+.Fa "int ctype_nid"
+.Fa "int econt_nid"
+.Fa "STACK_OF(X509_ALGOR) *micalg"
+.Fa "const ASN1_ITEM *it"
+.Fc
+.Sh DESCRIPTION
+.Fn SMIME_write_ASN1
+generates an S/MIME message on
+.Fa out_bio
+by writing MIME 1.0 headers
+followed by a BER- and base64-encoded serialization of
+.Fa val_in ,
+which can be of the type
+.Vt CMS_ContentInfo
+or
+.Vt PKCS7
+and has to match the
+.Fa it
+argument.
+.Pp
+The
+.Fa flags
+can be the logical OR of zero or more of the following bits:
+.Bl -tag -width Ds
+.It Dv PKCS7_REUSE_DIGEST
+Skip the calls to
+.Xr PKCS7_dataInit 3
+and
+.Xr PKCS7_dataFinal 3 .
+This flag has no effect unless
+.Dv SMIME_DETACHED
+is also set.
+It is normally used if
+.Fa out_bio
+is already set up to calculate and finalize the digest when written through.
+.It Dv SMIME_BINARY
+If specified, this flag is passed through to
+.Xr SMIME_crlf_copy 3 .
+.It Dv SMIME_CRLFEOL
+End MIME header lines with pairs of carriage return and newline characters.
+By default, no carriage return characters are written
+and header lines are ended with newline characters only.
+.It Dv SMIME_DETACHED
+Use cleartext signing.
+Generate a
+.Qq multipart/signed
+S/MIME message using the
+.Fa micalg
+argument and ignoring the
+.Fa ctype_nid
+and
+.Fa econt_nid
+arguments.
+The content is read from
+.Fa in_bio .
+If
+.Fa in_bio
+is a
+.Dv NULL
+pointer, this flag is ignored.
+.Pp
+If this flag is ignored or not specified,
+the smime-type is chosen according to
+.Fa ctype_nid
+instead:
+.Bl -tag -width Ds
+.It Dv NID_pkcs7_enveloped
+.Qq enveloped-data
+.It Dv NID_pkcs7_signed
+.Qq signed-receipt
+if
+.Fa econt_nid
+is
+.Dv NID_id_smime_ct_receipt
+.br
+.Qq signed-data
+if
+.Fa micalg
+is not empty
+.br
+.Qq certs-only
+if
+.Fa micalg
+is empty
+.It Dv NID_id_smime_ct_compressedData
+.Qq compressed-data
+.El
+.It Dv SMIME_OLDMIME
+In Content-Type headers, use
+.Qq application/x-pkcs7-mime
+or
+.Qq application/x-pkcs7-signature .
+By default,
+.Qq application/pkcs7-mime
+or
+.Qq application/pkcs7-signature
+are used instead.
+.It Dv SMIME_STREAM
+Perform streaming by passing this flag through to
+.Xr i2d_ASN1_bio_stream 3
+and reading the content from
+.Fa in_bio .
+This only works if
+.Dv SMIME_DETACHED
+is not specified.
+.It SMIME_TEXT
+Prepend the line
+.Qq Content-Type: text/plain
+to the content.
+This only makes sense if
+.Dv SMIME_DETACHED
+is also set.
+It is ignored if the flag
+.Dv SMIME_BINARY
+is also set.
+.El
+.Sh RETURN VALUES
+.Fn SMIME_write_ASN1
+is intended to return 1 on success or 0 on failure.
+.Sh SEE ALSO
+.Xr ASN1_item_i2d_bio 3 ,
+.Xr BIO_f_base64 3 ,
+.Xr BIO_new 3 ,
+.Xr i2d_ASN1_bio_stream 3 ,
+.Xr SMIME_crlf_copy 3 ,
+.Xr SMIME_write_CMS 3 ,
+.Xr SMIME_write_PKCS7 3 ,
+.Xr X509_ALGOR_new 3
+.Sh HISTORY
+.Fn SMIME_write_ASN1
+first appeared in OpenSSL 1.0.0 and has been available since
+.Ox 4.9 .
+.Sh BUGS
+.Fn SMIME_write_ASN1
+ignores most errors and is likely to return 1
+even after producing corrupt or incomplete output.
diff --git a/lib/libcrypto/man/SMIME_write_CMS.3 b/lib/libcrypto/man/SMIME_write_CMS.3
index 5a4e607a3cd..c2c6b77e537 100644
--- a/lib/libcrypto/man/SMIME_write_CMS.3
+++ b/lib/libcrypto/man/SMIME_write_CMS.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: SMIME_write_CMS.3,v 1.5 2019/11/02 15:39:46 schwarze Exp $
+.\" $OpenBSD: SMIME_write_CMS.3,v 1.6 2021/12/13 17:24:39 schwarze Exp $
 .\" full merge up to: OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400
 .\"
 .\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
@@ -48,7 +48,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 2 2019 $
+.Dd $Mdocdate: December 13 2021 $
 .Dt SMIME_WRITE_CMS 3
 .Os
 .Sh NAME
@@ -120,7 +120,8 @@ returns 1 for success or 0 for failure.
 .Xr CMS_encrypt 3 ,
 .Xr CMS_sign 3 ,
 .Xr d2i_CMS_ContentInfo 3 ,
-.Xr ERR_get_error 3
+.Xr ERR_get_error 3 ,
+.Xr SMIME_write_ASN1 3
 .Sh HISTORY
 .Fn SMIME_write_CMS
 first appeared in OpenSSL 0.9.8h
diff --git a/lib/libcrypto/man/SMIME_write_PKCS7.3 b/lib/libcrypto/man/SMIME_write_PKCS7.3
index 39d8b5d8598..4257a890184 100644
--- a/lib/libcrypto/man/SMIME_write_PKCS7.3
+++ b/lib/libcrypto/man/SMIME_write_PKCS7.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: SMIME_write_PKCS7.3,v 1.7 2020/06/03 13:41:27 schwarze Exp $
+.\" $OpenBSD: SMIME_write_PKCS7.3,v 1.8 2021/12/13 17:24:39 schwarze Exp $
 .\" full merge up to: OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400
 .\"
 .\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
@@ -49,7 +49,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: June 3 2020 $
+.Dd $Mdocdate: December 13 2021 $
 .Dt SMIME_WRITE_PKCS7 3
 .Os
 .Sh NAME
@@ -136,7 +136,8 @@ otherwise 0 is returned and an error code can be retrieved with
 .Xr PEM_write_PKCS7 3 ,
 .Xr PKCS7_final 3 ,
 .Xr PKCS7_new 3 ,
-.Xr SMIME_read_PKCS7 3
+.Xr SMIME_read_PKCS7 3 ,
+.Xr SMIME_write_ASN1 3
 .Sh HISTORY
 .Fn SMIME_write_PKCS7
 first appeared in OpenSSL 0.9.5 and has been available since
diff --git a/lib/libcrypto/man/i2d_ASN1_bio_stream.3 b/lib/libcrypto/man/i2d_ASN1_bio_stream.3
index 007d8eefd43..82908bb10fa 100644
--- a/lib/libcrypto/man/i2d_ASN1_bio_stream.3
+++ b/lib/libcrypto/man/i2d_ASN1_bio_stream.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: i2d_ASN1_bio_stream.3,v 1.1 2021/12/13 13:46:09 schwarze Exp $
+.\" $OpenBSD: i2d_ASN1_bio_stream.3,v 1.2 2021/12/13 17:24:39 schwarze Exp $
 .\"
 .\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -83,7 +83,8 @@ is intended to return 1 on success or 0 on failure.
 .Xr BIO_push 3 ,
 .Xr i2d_CMS_bio_stream 3 ,
 .Xr i2d_PKCS7_bio_stream 3 ,
-.Xr SMIME_crlf_copy 3
+.Xr SMIME_crlf_copy 3 ,
+.Xr SMIME_write_ASN1 3
 .Sh HISTORY
 .Fn i2d_ASN1_bio_stream
 first appeared in OpenSSL 1.0.0 and has been available since