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+.\" Mon Jan 13 19:26:48 2003
+.\"
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+.\" ======================================================================
+.\"
+.IX Title "ASN1_STRING_print_ex 3"
+.TH ASN1_STRING_print_ex 3 "0.9.7" "2003-01-13" "OpenSSL"
+.UC
+.SH "NAME"
+ASN1_STRING_print_ex, ASN1_STRING_print_ex_fp \- \s-1ASN1_STRING\s0 output routines.
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/asn1.h>
+.Ve
+.Vb 3
+\& int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags);
+\& int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags);
+\& int ASN1_STRING_print(BIO *out, ASN1_STRING *str);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+These functions output an \fB\s-1ASN1_STRING\s0\fR structure. \fB\s-1ASN1_STRING\s0\fR is used to
+represent all the \s-1ASN1\s0 string types.
+.PP
+\&\fIASN1_STRING_print_ex()\fR outputs \fBstr\fR to \fBout\fR, the format is determined by
+the options \fBflags\fR. \fIASN1_STRING_print_ex_fp()\fR is identical except it outputs
+to \fBfp\fR instead.
+.PP
+\&\fIASN1_STRING_print()\fR prints \fBstr\fR to \fBout\fR but using a different format to
+\&\fIASN1_STRING_print_ex()\fR. It replaces unprintable characters (other than \s-1CR\s0, \s-1LF\s0)
+with '.'.
+.SH "NOTES"
+.IX Header "NOTES"
+\&\fIASN1_STRING_print()\fR is a legacy function which should be avoided in new applications.
+.PP
+Although there are a large number of options frequently \fB\s-1ASN1_STRFLAGS_RFC2253\s0\fR is 
+suitable, or on \s-1UTF8\s0 terminals \fB\s-1ASN1_STRFLAGS_RFC2253\s0 & ~ASN1_STRFLAGS_ESC_MSB\fR.
+.PP
+The complete set of supported options for \fBflags\fR is listed below.
+.PP
+Various characters can be escaped. If \fB\s-1ASN1_STRFLGS_ESC_2253\s0\fR is set the characters
+determined by \s-1RFC2253\s0 are escaped. If \fB\s-1ASN1_STRFLGS_ESC_CTRL\s0\fR is set control
+characters are escaped. If \fB\s-1ASN1_STRFLGS_ESC_MSB\s0\fR is set characters with the
+\&\s-1MSB\s0 set are escaped: this option should \fBnot\fR be used if the terminal correctly
+interprets \s-1UTF8\s0 sequences.
+.PP
+Escaping takes several forms.
+.PP
+If the character being escaped is a 16 bit character then the form \*(L"\eWXXXX\*(R" is used
+using exactly four characters for the hex representation. If it is 32 bits then
+\&\*(L"\eUXXXXXXXX\*(R" is used using eight characters of its hex representation. These forms
+will only be used if \s-1UTF8\s0 conversion is not set (see below).
+.PP
+Printable characters are normally escaped using the backslash '\e' character. If
+\&\fB\s-1ASN1_STRFLGS_ESC_QUOTE\s0\fR is set then the whole string is instead surrounded by
+double quote characters: this is arguably more readable than the backslash
+notation. Other characters use the \*(L"\eXX\*(R" using exactly two characters of the hex
+representation.
+.PP
+If \fB\s-1ASN1_STRFLGS_UTF8_CONVERT\s0\fR is set then characters are converted to \s-1UTF8\s0
+format first. If the terminal supports the display of \s-1UTF8\s0 sequences then this
+option will correctly display multi byte characters.
+.PP
+If \fB\s-1ASN1_STRFLGS_IGNORE_TYPE\s0\fR is set then the string type is not interpreted at
+all: everything is assumed to be one byte per character. This is primarily for
+debugging purposes and can result in confusing output in multi character strings.
+.PP
+If \fB\s-1ASN1_STRFLGS_SHOW_TYPE\s0\fR is set then the string type itself is printed out
+before its value (for example \*(L"\s-1BMPSTRING\s0\*(R"), this actually uses \fIASN1_tag2str()\fR.
+.PP
+The content of a string instead of being interpreted can be \*(L"dumped\*(R": this just
+outputs the value of the string using the form #XXXX using hex format for each
+octet.
+.PP
+If \fB\s-1ASN1_STRFLGS_DUMP_ALL\s0\fR is set then any type is dumped.
+.PP
+Normally non character string types (such as \s-1OCTET\s0 \s-1STRING\s0) are assumed to be
+one byte per character, if \fB\s-1ASN1_STRFLAGS_DUMP_UNKNOWN\s0\fR is set then they will
+be dumped instead.
+.PP
+When a type is dumped normally just the content octets are printed, if 
+\&\fB\s-1ASN1_STRFLGS_DUMP_DER\s0\fR is set then the complete encoding is dumped
+instead (including tag and length octets).
+.PP
+\&\fB\s-1ASN1_STRFLGS_RFC2253\s0\fR includes all the flags required by \s-1RFC2253\s0. It is
+equivalent to:
+ \s-1ASN1_STRFLGS_ESC_2253\s0 | \s-1ASN1_STRFLGS_ESC_CTRL\s0 | \s-1ASN1_STRFLGS_ESC_MSB\s0 |
+ \s-1ASN1_STRFLGS_UTF8_CONVERT\s0 | \s-1ASN1_STRFLGS_DUMP_UNKNOWN\s0 \s-1ASN1_STRFLGS_DUMP_DER\s0
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+X509_NAME_print_ex(3),
+ASN1_tag2str(3)
+.SH "HISTORY"
+.IX Header "HISTORY"
+\&\s-1TBA\s0