Update files for OpenSSL-1.0.0f import.
[dragonfly.git] / secure / lib / libcrypto / man / CMS_get0_type.3
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124.\" ========================================================================
125.\"
126.IX Title "CMS_get0_type 3"
e3261593 127.TH CMS_get0_type 3 "2012-01-04" "1.0.0f" "OpenSSL"
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128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
132.SH "NAME"
133.Vb 1
134\& CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType \- get and set CMS content types
135.Ve
136.SH "SYNOPSIS"
137.IX Header "SYNOPSIS"
138.Vb 1
139\& #include <openssl/cms.h>
140\&
141\& const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms);
142\& int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid);
143\& const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms);
144.Ve
145.SH "DESCRIPTION"
146.IX Header "DESCRIPTION"
147\&\fICMS_get0_type()\fR returns the content type of a CMS_ContentInfo structure as
148and \s-1ASN1_OBJECT\s0 pointer. An application can then decide how to process the
149CMS_ContentInfo structure based on this value.
150.PP
151\&\fICMS_set1_eContentType()\fR sets the embedded content type of a CMS_ContentInfo
152structure. It should be called with \s-1CMS\s0 functions with the \fB\s-1CMS_PARTIAL\s0\fR
153flag and \fBbefore\fR the structure is finalised, otherwise the results are
154undefined.
155.PP
156\&\s-1ASN1_OBJECT\s0 *\fICMS_get0_eContentType()\fR returns a pointer to the embedded
157content type.
158.SH "NOTES"
159.IX Header "NOTES"
160As the \fB0\fR implies \fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return internal
161pointers which should \fBnot\fR be freed up. \fICMS_set1_eContentType()\fR copies the
162supplied \s-1OID\s0 and it \fBshould\fR be freed up after use.
163.PP
164The \fB\s-1ASN1_OBJECT\s0\fR values returned can be converted to an integer \fB\s-1NID\s0\fR value
165using \fIOBJ_obj2nid()\fR. For the currently supported content types the following
166values are returned:
167.PP
168.Vb 6
169\& NID_pkcs7_data
170\& NID_pkcs7_signed
171\& NID_pkcs7_digest
172\& NID_id_smime_ct_compressedData:
173\& NID_pkcs7_encrypted
174\& NID_pkcs7_enveloped
175.Ve
176.SH "RETURN VALUES"
177.IX Header "RETURN VALUES"
178\&\fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return and \s-1ASN1_OBJECT\s0 structure.
179.PP
180\&\fICMS_set1_eContentType()\fR returns 1 for success or 0 if an error occurred. The
181error can be obtained from \fIERR_get_error\fR\|(3).
182.SH "SEE ALSO"
183.IX Header "SEE ALSO"
184\&\fIERR_get_error\fR\|(3)
185.SH "HISTORY"
186.IX Header "HISTORY"
187\&\fICMS_get0_type()\fR, \fICMS_set1_eContentType()\fR and \fICMS_get0_eContentType()\fR were all
188first added to OpenSSL 0.9.8