Standard preamble:
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..
.... Set up some character translations and predefined strings. \*(-- will
give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
double quote, and \*(R" will give a right double quote. \*(C+ will
give a nicer C++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
nothing in troff, for use with C<>.
.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.
If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.
Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} ========================================================================
Title "ASN1_STRING_LENGTH 3ossl"
way too many mistakes in technical documents.
\fBASN1_STRING_length() returns the length of the content of x.
\fBASN1_STRING_get0_data() returns an internal pointer to the data of x. Since this is an internal pointer it should not be freed or modified in any way.
\fBASN1_STRING_data() is similar to ASN1_STRING_get0_data() except the returned value is not constant. This function is deprecated: applications should use ASN1_STRING_get0_data() instead.
\fBASN1_STRING_dup() returns a copy of the structure a.
\fBASN1_STRING_cmp() compares a and b returning 0 if the two are identical. The string types and content are compared.
\fBASN1_STRING_set() sets the data of string str to the buffer \fIdata or length len. The supplied data is copied. If len is -1 then the length is determined by strlen(data).
\fBASN1_STRING_type() returns the type of x, using standard constants such as V_ASN1_OCTET_STRING.
\fBASN1_STRING_to_UTF8() converts the string in to \s-1UTF8\s0 format, the converted data is allocated in a buffer in *out. The length of \fIout is returned or a negative error code. The buffer *out should be freed using OPENSSL_free().
These functions should not be used to examine or modify \s-1ASN1_INTEGER\s0 or \s-1ASN1_ENUMERATED\s0 types: the relevant \s-1INTEGER\s0 or \s-1ENUMERATED\s0 utility functions should be used instead.
In general it cannot be assumed that the data returned by ASN1_STRING_data() is null terminated or does not contain embedded nulls. The actual format of the data will depend on the actual string type itself: for example for an IA5String the data will be \s-1ASCII,\s0 for a BMPString two bytes per character in big endian format, and for a UTF8String it will be in \s-1UTF8\s0 format.
Similar care should be take to ensure the data is in the correct format when calling ASN1_STRING_set().
\fBASN1_STRING_get0_data() and ASN1_STRING_data() return an internal pointer to the data of x.
\fBASN1_STRING_dup() returns a valid \s-1ASN1_STRING\s0 structure or \s-1NULL\s0 if an error occurred.
\fBASN1_STRING_cmp() returns an integer greater than, equal to, or less than 0, according to whether a is greater than, equal to, or less than b.
\fBASN1_STRING_set() returns 1 on success or 0 on error.
\fBASN1_STRING_type() returns the type of x.
\fBASN1_STRING_to_UTF8() returns the number of bytes in output string out or a negative value if an error occurred.
Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.