X509_NAME_print_ex.3 revision 296465
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Title "X509_NAME_print_ex 3"
X509_NAME_print_ex 3 "2015-12-03" "0.9.8zh" "OpenSSL"
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"NAME"
X509_NAME_print_ex, X509_NAME_print_ex_fp, X509_NAME_print, X509_NAME_oneline - X509_NAME printing routines.
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/x509.h> \& int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags); int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags); char * X509_NAME_oneline(X509_NAME *a,char *buf,int size); int X509_NAME_print(BIO *bp, X509_NAME *name, int obase); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fIX509_NAME_print_ex() prints a human readable version of nm to \s-1BIO \s0out. Each line (for multiline formats) is indented by indent spaces. The output format can be extensively customised by use of the flags parameter.

\fIX509_NAME_print_ex_fp() is identical to X509_NAME_print_ex() except the output is written to \s-1FILE\s0 pointer fp.

\fIX509_NAME_oneline() prints an \s-1ASCII\s0 version of a to buf. At most size bytes will be written. If buf is \s-1NULL\s0 then a buffer is dynamically allocated and returned, otherwise buf is returned.

\fIX509_NAME_print() prints out name to bp indenting each line by obase characters. Multiple lines are used if the output (including indent) exceeds 80 characters.

"NOTES"
Header "NOTES" The functions X509_NAME_oneline() and X509_NAME_print() are legacy functions which produce a non standard output form, they don't handle multi character fields and have various quirks and inconsistencies. Their use is strongly discouraged in new applications.

Although there are a large number of possible flags for most purposes \fB\s-1XN_FLAG_ONELINE\s0, \s-1XN_FLAG_MULTILINE\s0 or \s-1XN_FLAG_RFC2253\s0 will suffice. As noted on the ASN1_STRING_print_ex\|(3) manual page for \s-1UTF8\s0 terminals the \s-1ASN1_STRFLGS_ESC_MSB\s0 should be unset: so for example \fB\s-1XN_FLAG_ONELINE &\s0 ~ASN1_STRFLGS_ESC_MSB would be used.

The complete set of the flags supported by X509_NAME_print_ex() is listed below.

Several options can be ored together.

The options \s-1XN_FLAG_SEP_COMMA_PLUS\s0, \s-1XN_FLAG_SEP_CPLUS_SPC\s0, \fB\s-1XN_FLAG_SEP_SPLUS_SPC\s0 and \s-1XN_FLAG_SEP_MULTILINE\s0 determine the field separators to use. Two distinct separators are used between distinct RelativeDistinguishedName components and separate values in the same \s-1RDN\s0 for a multi-valued \s-1RDN.\s0 Multi-valued RDNs are currently very rare so the second separator will hardly ever be used.

\fB\s-1XN_FLAG_SEP_COMMA_PLUS\s0 uses comma and plus as separators. \s-1XN_FLAG_SEP_CPLUS_SPC\s0 uses comma and plus with spaces: this is more readable that plain comma and plus. \fB\s-1XN_FLAG_SEP_SPLUS_SPC\s0 uses spaced semicolon and plus. \s-1XN_FLAG_SEP_MULTILINE\s0 uses spaced newline and plus respectively.

If \s-1XN_FLAG_DN_REV\s0 is set the whole \s-1DN\s0 is printed in reversed order.

The fields \s-1XN_FLAG_FN_SN\s0, \s-1XN_FLAG_FN_LN\s0, \s-1XN_FLAG_FN_OID\s0, \fB\s-1XN_FLAG_FN_NONE\s0 determine how a field name is displayed. It will use the short name (e.g. \s-1CN\s0) the long name (e.g. commonName) always use \s-1OID\s0 numerical form (normally OIDs are only used if the field name is not recognised) and no field name respectively.

If \s-1XN_FLAG_SPC_EQ\s0 is set then spaces will be placed around the '=' character separating field names and values.

If \s-1XN_FLAG_DUMP_UNKNOWN_FIELDS\s0 is set then the encoding of unknown fields is printed instead of the values.

If \s-1XN_FLAG_FN_ALIGN\s0 is set then field names are padded to 20 characters: this is only of use for multiline format.

Additionally all the options supported by ASN1_STRING_print_ex() can be used to control how each field value is displayed.

In addition a number options can be set for commonly used formats.

\fB\s-1XN_FLAG_RFC2253\s0 sets options which produce an output compatible with \s-1RFC2253\s0 it is equivalent to: \s-1ASN1_STRFLGS_RFC2253\s0 | \s-1XN_FLAG_SEP_COMMA_PLUS\s0 | \s-1XN_FLAG_DN_REV\s0 | \s-1XN_FLAG_FN_SN\s0 | \s-1XN_FLAG_DUMP_UNKNOWN_FIELDS\s0

\fB\s-1XN_FLAG_ONELINE\s0 is a more readable one line format which is the same as: \s-1ASN1_STRFLGS_RFC2253\s0 | \s-1ASN1_STRFLGS_ESC_QUOTE\s0 | \s-1XN_FLAG_SEP_CPLUS_SPC\s0 | \s-1XN_FLAG_SPC_EQ\s0 | \s-1XN_FLAG_FN_SN\s0

\fB\s-1XN_FLAG_MULTILINE\s0 is a multiline format which is the same as: \s-1ASN1_STRFLGS_ESC_CTRL\s0 | \s-1ASN1_STRFLGS_ESC_MSB\s0 | \s-1XN_FLAG_SEP_MULTILINE\s0 | \s-1XN_FLAG_SPC_EQ\s0 | \s-1XN_FLAG_FN_LN\s0 | \s-1XN_FLAG_FN_ALIGN\s0

\fB\s-1XN_FLAG_COMPAT\s0 uses a format identical to X509_NAME_print(): in fact it calls X509_NAME_print() internally.

"SEE ALSO"
Header "SEE ALSO" \fIASN1_STRING_print_ex\|(3)
"HISTORY"
Header "HISTORY" \s-1TBA\s0