105 lines
4.3 KiB
Text
105 lines
4.3 KiB
Text
=pod
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=head1 NAME
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X509_NAME_print_ex, X509_NAME_print_ex_fp, X509_NAME_print,
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X509_NAME_oneline - X509_NAME printing routines.
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=head1 SYNOPSIS
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#include <openssl/x509.h>
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int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags);
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int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags);
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char * X509_NAME_oneline(X509_NAME *a,char *buf,int size);
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int X509_NAME_print(BIO *bp, X509_NAME *name, int obase);
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=head1 DESCRIPTION
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X509_NAME_print_ex() prints a human readable version of B<nm> to BIO B<out>. Each
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line (for multiline formats) is indented by B<indent> spaces. The output format
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can be extensively customised by use of the B<flags> parameter.
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X509_NAME_print_ex_fp() is identical to X509_NAME_print_ex() except the output is
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written to FILE pointer B<fp>.
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X509_NAME_oneline() prints an ASCII version of B<a> to B<buf>. At most B<size>
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bytes will be written. If B<buf> is B<NULL> then a buffer is dynamically allocated
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and returned, otherwise B<buf> is returned.
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X509_NAME_print() prints out B<name> to B<bp> indenting each line by B<obase>
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characters. Multiple lines are used if the output (including indent) exceeds
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80 characters.
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=head1 NOTES
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The functions X509_NAME_oneline() and X509_NAME_print() are legacy functions which
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produce a non standard output form, they don't handle multi character fields and
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have various quirks and inconsistencies. Their use is strongly discouraged in new
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applications.
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Although there are a large number of possible flags for most purposes
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B<XN_FLAG_ONELINE>, B<XN_FLAG_MULTILINE> or B<XN_FLAG_RFC2253> will suffice.
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As noted on the L<ASN1_STRING_print_ex(3)|ASN1_STRING_print_ex(3)> manual page
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for UTF8 terminals the B<ASN1_STRFLGS_ESC_MSB> should be unset: so for example
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B<XN_FLAG_ONELINE & ~ASN1_STRFLGS_ESC_MSB> would be used.
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The complete set of the flags supported by X509_NAME_print_ex() is listed below.
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Several options can be ored together.
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The options B<XN_FLAG_SEP_COMMA_PLUS>, B<XN_FLAG_SEP_CPLUS_SPC>,
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B<XN_FLAG_SEP_SPLUS_SPC> and B<XN_FLAG_SEP_MULTILINE> determine the field separators
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to use. Two distinct separators are used between distinct RelativeDistinguishedName
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components and separate values in the same RDN for a multi-valued RDN. Multi-valued
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RDNs are currently very rare so the second separator will hardly ever be used.
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B<XN_FLAG_SEP_COMMA_PLUS> uses comma and plus as separators. B<XN_FLAG_SEP_CPLUS_SPC>
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uses comma and plus with spaces: this is more readable that plain comma and plus.
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B<XN_FLAG_SEP_SPLUS_SPC> uses spaced semicolon and plus. B<XN_FLAG_SEP_MULTILINE> uses
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spaced newline and plus respectively.
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If B<XN_FLAG_DN_REV> is set the whole DN is printed in reversed order.
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The fields B<XN_FLAG_FN_SN>, B<XN_FLAG_FN_LN>, B<XN_FLAG_FN_OID>,
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B<XN_FLAG_FN_NONE> determine how a field name is displayed. It will
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use the short name (e.g. CN) the long name (e.g. commonName) always
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use OID numerical form (normally OIDs are only used if the field name is not
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recognised) and no field name respectively.
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If B<XN_FLAG_SPC_EQ> is set then spaces will be placed around the '=' character
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separating field names and values.
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If B<XN_FLAG_DUMP_UNKNOWN_FIELDS> is set then the encoding of unknown fields is
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printed instead of the values.
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If B<XN_FLAG_FN_ALIGN> is set then field names are padded to 20 characters: this
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is only of use for multiline format.
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Additionally all the options supported by ASN1_STRING_print_ex() can be used to
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control how each field value is displayed.
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In addition a number options can be set for commonly used formats.
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B<XN_FLAG_RFC2253> sets options which produce an output compatible with RFC2253 it
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is equivalent to:
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B<ASN1_STRFLGS_RFC2253 | XN_FLAG_SEP_COMMA_PLUS | XN_FLAG_DN_REV | XN_FLAG_FN_SN | XN_FLAG_DUMP_UNKNOWN_FIELDS>
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B<XN_FLAG_ONELINE> is a more readable one line format it is the same as:
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B<ASN1_STRFLGS_RFC2253 | ASN1_STRFLGS_ESC_QUOTE | XN_FLAG_SEP_CPLUS_SPC | XN_FLAG_SPC_EQ | XN_FLAG_FN_SN>
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B<XN_FLAG_MULTILINE> is a multiline format is is the same as:
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B<ASN1_STRFLGS_ESC_CTRL | ASN1_STRFLGS_ESC_MSB | XN_FLAG_SEP_MULTILINE | XN_FLAG_SPC_EQ | XN_FLAG_FN_LN | XN_FLAG_FN_ALIGN>
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B<XN_FLAG_COMPAT> uses a format identical to X509_NAME_print(): in fact it calls X509_NAME_print() internally.
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=head1 SEE ALSO
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L<ASN1_STRING_print_ex(3)|ASN1_STRING_print_ex(3)>
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=head1 HISTORY
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TBA
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=cut
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