/xlv3/openssl/0.9.7e-sgipl1/work/0.9.7e-sgipl1/openssl-
0.9.7e/doc/crypto
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X509_NAME_add_entry_by_12/Nov/2002 (X509_NAME_add_entry_by_txt(3)
NAME
X509_NAME_add_entry_by_txt, X509_NAME_add_entry_by_OBJ,
X509_NAME_add_entry_by_NID, X509_NAME_add_entry,
X509_NAME_delete_entry - X509_NAME modification functions
SYNOPSIS
int X509_NAME_add_entry_by_txt(X509_NAME *name, char *field,
int type, unsigned char *bytes, int len, int loc, int set);
int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT
*obj, int type, unsigned char *bytes, int len, int loc, int
set); int X509_NAME_add_entry_by_NID(X509_NAME *name, int
nid, int type, unsigned char *bytes, int len, int loc, int
set); int X509_NAME_add_entry(X509_NAME
*name,X509_NAME_ENTRY *ne, int loc, int set);
X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int
loc);
DESCRIPTION
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ()
and X509_NAME_add_entry_by_NID() add a field whose name is
defined by a string field, an object obj or a NID nid
respectively. The field value to be added is in bytes of
length len. If len is -1 then the field length is calculated
internally using strlen(bytes).
The type of field is determined by type which can either be
a definition of the type of bytes (such as MBSTRING_ASC) or
a standard ASN1 type (such as V_ASN1_IA5STRING). The new
entry is added to a position determined by loc and set.
X509_NAME_add_entry() adds a copy of X509_NAME_ENTRY
structure ne to name. The new entry is added to a position
determined by loc and set. Since a copy of ne is added ne
must be freed up after the call.
X509_NAME_delete_entry() deletes an entry from name at
position loc. The deleted entry is returned and must be
freed up.
NOTES
The use of string types such as MBSTRING_ASC or
MBSTRING_UTF8 is strongly recommened for the type parameter.
This allows the internal code to correctly determine the
type of the field and to apply length checks according to
the relevant standards. This is done using
ASN1_STRING_set_by_NID().
If instead an ASN1 type is used no checks are performed and
the supplied data in bytes is used directly.
In X509_NAME_add_entry_by_txt() the field string represents
the field name using OBJ_txt2obj(field, 0).
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The loc and set parameters determine where a new entry
should be added. For almost all applications loc can be set
to -1 and set to 0. This adds a new entry to the end of name
as a single valued RelativeDistinguishedName (RDN).
loc actually determines the index where the new entry is
inserted: if it is -1 it is appended.
set determines how the new type is added. If it is zero a
new RDN is created.
If set is -1 or 1 it is added to the previous or next RDN
structure respectively. This will then be a multivalued RDN:
since multivalues RDNs are very seldom used set is almost
always set to zero.
EXAMPLES
Create an X509_NAME structure:
"C=UK, O=Disorganized Organization, CN=Joe Bloggs"
X509_NAME *nm;
nm = X509_NAME_new();
if (nm == NULL)
/* Some error */
if (!X509_NAME_add_entry_by_txt(nm, MBSTRING_ASC,
"C", "UK", -1, -1, 0))
/* Error */
if (!X509_NAME_add_entry_by_txt(nm, MBSTRING_ASC,
"O", "Disorganized Organization", -1, -1, 0))
/* Error */
if (!X509_NAME_add_entry_by_txt(nm, MBSTRING_ASC,
"CN", "Joe Bloggs", -1, -1, 0))
/* Error */
RETURN VALUES
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ(),
X509_NAME_add_entry_by_NID() and X509_NAME_add_entry()
return 1 for success of 0 if an error occurred.
X509_NAME_delete_entry() returns either the deleted
X509_NAME_ENTRY structure of NULL if an error occurred.
BUGS
type can still be set to V_ASN1_APP_CHOOSE to use a
different algorithm to determine field types. Since this
form does not understand multicharacter types, performs no
length checks and can result in invalid field types its use
is strongly discouraged.
SEE ALSO
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HISTORY
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