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135 .IX Title "CMS_get0_type 3"
136 .TH CMS_get0_type 3 "2015-01-15" "1.0.1l" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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143 \& CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType \- get and set CMS content types
146 .IX Header "SYNOPSIS"
148 \& #include <openssl/cms.h>
150 \& const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms);
151 \& int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid);
152 \& const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms);
155 .IX Header "DESCRIPTION"
156 \&\fICMS_get0_type()\fR returns the content type of a CMS_ContentInfo structure as
157 and \s-1ASN1_OBJECT\s0 pointer. An application can then decide how to process the
158 CMS_ContentInfo structure based on this value.
160 \&\fICMS_set1_eContentType()\fR sets the embedded content type of a CMS_ContentInfo
161 structure. It should be called with \s-1CMS\s0 functions with the \fB\s-1CMS_PARTIAL\s0\fR
162 flag and \fBbefore\fR the structure is finalised, otherwise the results are
165 \&\s-1ASN1_OBJECT\s0 *\fICMS_get0_eContentType()\fR returns a pointer to the embedded
169 As the \fB0\fR implies \fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return internal
170 pointers which should \fBnot\fR be freed up. \fICMS_set1_eContentType()\fR copies the
171 supplied \s-1OID\s0 and it \fBshould\fR be freed up after use.
173 The \fB\s-1ASN1_OBJECT\s0\fR values returned can be converted to an integer \fB\s-1NID\s0\fR value
174 using \fIOBJ_obj2nid()\fR. For the currently supported content types the following
181 \& NID_id_smime_ct_compressedData:
182 \& NID_pkcs7_encrypted
183 \& NID_pkcs7_enveloped
186 .IX Header "RETURN VALUES"
187 \&\fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return and \s-1ASN1_OBJECT\s0 structure.
189 \&\fICMS_set1_eContentType()\fR returns 1 for success or 0 if an error occurred. The
190 error can be obtained from \fIERR_get_error\fR\|(3).
192 .IX Header "SEE ALSO"
193 \&\fIERR_get_error\fR\|(3)
196 \&\fICMS_get0_type()\fR, \fICMS_set1_eContentType()\fR and \fICMS_get0_eContentType()\fR were all
197 first added to OpenSSL 0.9.8