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126 .IX Title "CMS_get0_type 3"
127 .TH CMS_get0_type 3 "2011-02-08" "1.0.0d" "OpenSSL"
128 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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134 \& CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType \- get and set CMS content types
137 .IX Header "SYNOPSIS"
139 \& #include <openssl/cms.h>
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);
146 .IX Header "DESCRIPTION"
147 \&\fICMS_get0_type()\fR returns the content type of a CMS_ContentInfo structure as
148 and \s-1ASN1_OBJECT\s0 pointer. An application can then decide how to process the
149 CMS_ContentInfo structure based on this value.
151 \&\fICMS_set1_eContentType()\fR sets the embedded content type of a CMS_ContentInfo
152 structure. It should be called with \s-1CMS\s0 functions with the \fB\s-1CMS_PARTIAL\s0\fR
153 flag and \fBbefore\fR the structure is finalised, otherwise the results are
156 \&\s-1ASN1_OBJECT\s0 *\fICMS_get0_eContentType()\fR returns a pointer to the embedded
160 As the \fB0\fR implies \fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return internal
161 pointers which should \fBnot\fR be freed up. \fICMS_set1_eContentType()\fR copies the
162 supplied \s-1OID\s0 and it \fBshould\fR be freed up after use.
164 The \fB\s-1ASN1_OBJECT\s0\fR values returned can be converted to an integer \fB\s-1NID\s0\fR value
165 using \fIOBJ_obj2nid()\fR. For the currently supported content types the following
172 \& NID_id_smime_ct_compressedData:
173 \& NID_pkcs7_encrypted
174 \& NID_pkcs7_enveloped
177 .IX Header "RETURN VALUES"
178 \&\fICMS_get0_type()\fR and \fICMS_get0_eContentType()\fR return and \s-1ASN1_OBJECT\s0 structure.
180 \&\fICMS_set1_eContentType()\fR returns 1 for success or 0 if an error occurred. The
181 error can be obtained from \fIERR_get_error\fR\|(3).
183 .IX Header "SEE ALSO"
184 \&\fIERR_get_error\fR\|(3)
187 \&\fICMS_get0_type()\fR, \fICMS_set1_eContentType()\fR and \fICMS_get0_eContentType()\fR were all
188 first added to OpenSSL 0.9.8