.\" $OpenBSD: X509_NAME_ENTRY_get_object.3,v 1.12 2018/05/19 21:25:51 schwarze Exp $ .\" full merge up to: OpenSSL aebb9aac Jul 19 09:27:53 2016 -0400 .\" selective merge up to: OpenSSL 61f805c1 Jan 16 01:01:46 2018 +0800 .\" .\" This file is a derived work. .\" The changes are covered by the following Copyright and license: .\" .\" Copyright (c) 2016 Ingo Schwarze .\" .\" 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. 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IN NO EVENT SHALL THE OpenSSL PROJECT OR .\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, .\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED .\" OF THE POSSIBILITY OF SUCH DAMAGE. .\" .Dd $Mdocdate: May 19 2018 $ .Dt X509_NAME_ENTRY_GET_OBJECT 3 .Os .Sh NAME .Nm X509_NAME_ENTRY_new , .Nm X509_NAME_ENTRY_free , .Nm X509_NAME_ENTRY_get_object , .Nm X509_NAME_ENTRY_get_data , .Nm X509_NAME_ENTRY_set_object , .Nm X509_NAME_ENTRY_set_data , .Nm X509_NAME_ENTRY_create_by_txt , .Nm X509_NAME_ENTRY_create_by_NID , .Nm X509_NAME_ENTRY_create_by_OBJ .\" In the following line, "X.501" is not a typo. .\" This object defined in X.501, not in X.509. .Nd X.501 relative distinguished name .Sh SYNOPSIS .In openssl/x509.h .Ft X509_NAME_ENTRY * .Fn X509_NAME_ENTRY_new void .Ft void .Fo X509_NAME_ENTRY_free .Fa "X509_NAME_ENTRY* ne" .Fc .Ft ASN1_OBJECT * .Fo X509_NAME_ENTRY_get_object .Fa "const X509_NAME_ENTRY *ne" .Fc .Ft ASN1_STRING * .Fo X509_NAME_ENTRY_get_data .Fa "const X509_NAME_ENTRY *ne" .Fc .Ft int .Fo X509_NAME_ENTRY_set_object .Fa "X509_NAME_ENTRY *ne" .Fa "const ASN1_OBJECT *obj" .Fc .Ft int .Fo X509_NAME_ENTRY_set_data .Fa "X509_NAME_ENTRY *ne" .Fa "int type" .Fa "const unsigned char *bytes" .Fa "int len" .Fc .Ft X509_NAME_ENTRY * .Fo X509_NAME_ENTRY_create_by_txt .Fa "X509_NAME_ENTRY **ne" .Fa "const char *field" .Fa "int type" .Fa "const unsigned char *bytes" .Fa "int len" .Fc .Ft X509_NAME_ENTRY * .Fo X509_NAME_ENTRY_create_by_NID .Fa "X509_NAME_ENTRY **ne" .Fa "int nid" .Fa "int type" .Fa "const unsigned char *bytes" .Fa "int len" .Fc .Ft X509_NAME_ENTRY * .Fo X509_NAME_ENTRY_create_by_OBJ .Fa "X509_NAME_ENTRY **ne" .Fa "const ASN1_OBJECT *obj" .Fa "int type" .Fa "const unsigned char *bytes" .Fa "int len" .Fc .Sh DESCRIPTION An X.501 .Vt RelativeDistinguishedName is a set of field type and value pairs. It is the building block for constructing X.501 .Vt Name objects. This implementation only supports sets with one element, so an .Vt X509_NAME_ENTRY object contains only one field type and one value. .Pp .Fn X509_NAME_ENTRY_new allocates and initializes an empty .Vt X509_NAME_ENTRY object, representing an ASN.1 .Vt RelativeDistinguishedName structure defined in RFC 5280 section 4.1.2.4. .Pp .Fn X509_NAME_ENTRY_free frees .Fa ne and the type and value contained in it. .Pp .Fn X509_NAME_ENTRY_get_object retrieves the field type of .Fa ne in an .Vt ASN1_OBJECT structure. .Fn X509_NAME_ENTRY_get_data retrieves the field value of .Fa ne in an .Vt ASN1_STRING structure. These two functions can be used to examine an .Vt X509_NAME_ENTRY object as returned by .Xr X509_NAME_get_entry 3 . .Pp .Fn X509_NAME_ENTRY_set_object sets the field type of .Fa ne to .Fa obj . .Pp .Fn X509_NAME_ENTRY_set_data sets the field value of .Fa ne to string type .Fa type and the value determined by .Fa bytes and .Fa len . .Pp .Fn X509_NAME_ENTRY_create_by_txt , .Fn X509_NAME_ENTRY_create_by_NID , and .Fn X509_NAME_ENTRY_create_by_OBJ create and return an .Vt X509_NAME_ENTRY structure. .Pp Except for .Fn X509_NAME_ENTRY_get_object and .Fn X509_NAME_ENTRY_get_data , these functions are rarely used because .Vt X509_NAME_ENTRY structures are almost always part of .Vt X509_NAME structures and the functions described in .Xr X509_NAME_add_entry_by_txt 3 are typically used to create and add new entries in a single operation. .Pp The arguments of these functions support similar options to the similarly named ones described in .Xr X509_NAME_add_entry_by_txt 3 . So for example .Fa type can be set to .Dv MBSTRING_ASC , but in the case of .Fn X509_NAME_ENTRY_set_data the field type must be set first so the relevant field information can be looked up internally. .Sh RETURN VALUES .Fn X509_NAME_ENTRY_new , .Fn X509_NAME_ENTRY_create_by_txt , .Fn X509_NAME_ENTRY_create_by_NID , and .Fn X509_NAME_ENTRY_create_by_OBJ return a valid .Vt X509_NAME_ENTRY structure on success or .Dv NULL if an error occurred. .Pp .Fn X509_NAME_ENTRY_get_object returns a valid .Vt ASN1_OBJECT structure if it is set or .Dv NULL if an error occurred. .Pp .Fn X509_NAME_ENTRY_get_data returns a valid .Vt ASN1_STRING structure if it is set or .Dv NULL if an error occurred. .Pp .Fn X509_NAME_ENTRY_set_object and .Fn X509_NAME_ENTRY_set_data return 1 on success or 0 on error. .Sh SEE ALSO .Xr ERR_get_error 3 , .Xr OBJ_nid2obj 3 , .Xr X509_NAME_add_entry 3 , .Xr X509_NAME_get_entry 3 , .Xr X509_NAME_new 3 .Sh STANDARDS RFC 5280: Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile .Pp ITU-T Recommendation X.501, also known as ISO/IEC 9594-2: Information Technology Open Systems Interconnection The Directory: Models, section 9.3: Relative distinguished name .Sh HISTORY .Fn X509_NAME_ENTRY_new and .Fn X509_NAME_ENTRY_free first appeared in SSLeay 0.5.1. .Fn X509_NAME_ENTRY_get_object , .Fn X509_NAME_ENTRY_get_data , .Fn X509_NAME_ENTRY_set_object , .Fn X509_NAME_ENTRY_set_data , .Fn X509_NAME_ENTRY_create_by_NID , and .Fn X509_NAME_ENTRY_create_by_OBJ first appeared in SSLeay 0.8.0. These functions have been available since .Ox 2.4 . .Pp .Fn X509_NAME_ENTRY_create_by_txt first appeared in OpenSSL 0.9.5 and has been available since .Ox 2.7 .