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Edit File : CMS_get0_eContentType.3ssl \| Size : 6.76 KB
.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \(-- will .\" give an unbreakable dash, \(PI will give pi, \(L" will give a left .\" double quote, and \(R" will give a right double quote. \(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" .Vb 1 \& CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType, CMS_get0_content \- get and set CMS content types and content .Ve .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/cms.h> \& \& const ASN1_OBJECT CMS_get0_type(CMS_ContentInfo cms); \& int CMS_set1_eContentType(CMS_ContentInfo cms, const ASN1_OBJECT oid); \& const ASN1_OBJECT CMS_get0_eContentType(CMS_ContentInfo cms); \& ASN1_OCTET_STRING CMS_get0_content(CMS_ContentInfo cms); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBCMS_get0_type()\fR returns the content type of a CMS_ContentInfo structure as and \s-1ASN1_OBJECT\s0 pointer. An application can then decide how to process the CMS_ContentInfo structure based on this value. .PP \&\fBCMS_set1_eContentType()\fR sets the embedded content type of a CMS_ContentInfo structure. It should be called with \s-1CMS\s0 functions with the \fB\s-1CMS_PARTIAL\s0\fR flag and \fBbefore\fR the structure is finalised, otherwise the results are undefined. .PP \&\s-1ASN1_OBJECT\s0 \fBCMS_get0_eContentType()\fR returns a pointer to the embedded content type. .PP \&\fBCMS_get0_content()\fR returns a pointer to the \fB\s-1ASN1_OCTET_STRING\s0\fR pointer containing the embedded content. .SH "NOTES" .IX Header "NOTES" As the \fB0\fR implies \fBCMS_get0_type()\fR, \fBCMS_get0_eContentType()\fR and \&\fBCMS_get0_content()\fR return internal pointers which should \fBnot\fR be freed up. \&\fBCMS_set1_eContentType()\fR copies the supplied \s-1OID\s0 and it \fBshould\fR be freed up after use. .PP The \fB\s-1ASN1_OBJECT\s0\fR values returned can be converted to an integer \fB\s-1NID\s0\fR value using \fBOBJ_obj2nid()\fR. For the currently supported content types the following values are returned: .PP .Vb 6 \& NID_pkcs7_data \& NID_pkcs7_signed \& NID_pkcs7_digest \& NID_id_smime_ct_compressedData: \& NID_pkcs7_encrypted \& NID_pkcs7_enveloped .Ve .PP The return value of \fBCMS_get0_content()\fR is a pointer to the \fB\s-1ASN1_OCTET_STRING\s0\fR content pointer. That means that for example: .PP .Vb 1 \& ASN1_OCTET_STRING pconf = CMS_get0_content(cms); .Ve .PP \&\fBpconf\fR could be \s-1NULL\s0 if there is no embedded content. Applications can access, modify or create the embedded content in a \fBCMS_ContentInfo\fR structure using this function. Applications usually will not need to modify the embedded content as it is normally set by higher level functions. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBCMS_get0_type()\fR and \fBCMS_get0_eContentType()\fR return and \s-1ASN1_OBJECT\s0 structure. .PP \&\fBCMS_set1_eContentType()\fR returns 1 for success or 0 if an error occurred. The error can be obtained from \fBERR_get_error\fR\\|(3). .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBERR_get_error\fR\\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fBCMS_get0_type()\fR, \fBCMS_set1_eContentType()\fR and \fBCMS_get0_eContentType()\fR were all first added to OpenSSL 0.9.8 Back

Edit File : CMS_get0_eContentType.3ssl | Size : 6.76 KB

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.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "CMS_get0_type 3"
.TH CMS_get0_type 3 "2019-12-20" "1.0.2u" "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"
.Vb 1
\& CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType, CMS_get0_content \- get and set CMS content types and content
.Ve
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/cms.h>
\&
\& const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms);
\& int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid);
\& const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms);
\& ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBCMS_get0_type()\fR returns the content type of a CMS_ContentInfo structure as
and \s-1ASN1_OBJECT\s0 pointer. An application can then decide how to process the
CMS_ContentInfo structure based on this value.
.PP
\&\fBCMS_set1_eContentType()\fR sets the embedded content type of a CMS_ContentInfo
structure. It should be called with \s-1CMS\s0 functions with the \fB\s-1CMS_PARTIAL\s0\fR
flag and \fBbefore\fR the structure is finalised, otherwise the results are
undefined.
.PP
\&\s-1ASN1_OBJECT\s0 *\fBCMS_get0_eContentType()\fR returns a pointer to the embedded
content type.
.PP
\&\fBCMS_get0_content()\fR returns a pointer to the \fB\s-1ASN1_OCTET_STRING\s0\fR pointer
containing the embedded content.
.SH "NOTES"
.IX Header "NOTES"
As the \fB0\fR implies \fBCMS_get0_type()\fR, \fBCMS_get0_eContentType()\fR and
\&\fBCMS_get0_content()\fR return internal pointers which should \fBnot\fR be freed up.
\&\fBCMS_set1_eContentType()\fR copies the supplied \s-1OID\s0 and it \fBshould\fR be freed up
after use.
.PP
The \fB\s-1ASN1_OBJECT\s0\fR values returned can be converted to an integer \fB\s-1NID\s0\fR value
using \fBOBJ_obj2nid()\fR. For the currently supported content types the following
values are returned:
.PP
.Vb 6
\& NID_pkcs7_data
\& NID_pkcs7_signed
\& NID_pkcs7_digest
\& NID_id_smime_ct_compressedData:
\& NID_pkcs7_encrypted
\& NID_pkcs7_enveloped
.Ve
.PP
The return value of \fBCMS_get0_content()\fR is a pointer to the \fB\s-1ASN1_OCTET_STRING\s0\fR
content pointer. That means that for example:
.PP
.Vb 1
\& ASN1_OCTET_STRING **pconf = CMS_get0_content(cms);
.Ve
.PP
\&\fB*pconf\fR could be \s-1NULL\s0 if there is no embedded content. Applications can
access, modify or create the embedded content in a \fBCMS_ContentInfo\fR structure
using this function. Applications usually will not need to modify the
embedded content as it is normally set by higher level functions.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBCMS_get0_type()\fR and \fBCMS_get0_eContentType()\fR return and \s-1ASN1_OBJECT\s0 structure.
.PP
\&\fBCMS_set1_eContentType()\fR returns 1 for success or 0 if an error occurred.  The
error can be obtained from \fBERR_get_error\fR\|(3).
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBERR_get_error\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\fBCMS_get0_type()\fR, \fBCMS_set1_eContentType()\fR and \fBCMS_get0_eContentType()\fR were all
first added to OpenSSL 0.9.8

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