Standard preamble:
========================================================================
..
.... 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
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
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_TYPE_GET 3"
way too many mistakes in technical documents.
\fBASN1_TYPE_get() returns the type of a.
\fBASN1_TYPE_set() sets the value of a to type and value. This function uses the pointer value internally so it must not be freed up after the call.
\fBASN1_TYPE_set1() sets the value of a to type a copy of value.
\fBASN1_TYPE_cmp() compares \s-1ASN.1\s0 types a and b and returns 0 if they are identical and nonzero otherwise.
\fBASN1_TYPE_unpack_sequence() attempts to parse the \s-1SEQUENCE\s0 present in \fBt using the \s-1ASN.1\s0 structure it. If successful it returns a pointer to the \s-1ASN.1\s0 structure corresponding to it which must be freed by the caller. If it fails it return \s-1NULL.\s0
\fBASN1_TYPE_pack_sequence() attempts to encode the \s-1ASN.1\s0 structure s corresponding to it into an \s-1ASN1_TYPE.\s0 If successful the encoded \s-1ASN1_TYPE\s0 is returned. If t and *t are not \s-1NULL\s0 the encoded type is written to t overwriting any existing data. If t is not \s-1NULL\s0 but *t is \s-1NULL\s0 the returned \s-1ASN1_TYPE\s0 is written to *t.
\fBASN1_TYPE_cmp() may not return zero if two types are equivalent but have different encodings. For example the single content octet of the boolean \s-1TRUE\s0 value under \s-1BER\s0 can have any nonzero encoding but ASN1_TYPE_cmp() will only return zero if the values are the same.
If either or both of the parameters passed to ASN1_TYPE_cmp() is \s-1NULL\s0 the return value is nonzero. Technically if both parameters are \s-1NULL\s0 the two types could be absent \s-1OPTIONAL\s0 fields and so should match, however, passing \s-1NULL\s0 values could also indicate a programming error (for example an unparsable type which returns \s-1NULL\s0) for types which do not match. So applications should handle the case of two absent values separately.
\fBASN1_TYPE_set() does not return a value.
\fBASN1_TYPE_set1() returns 1 for success and 0 for failure.
\fBASN1_TYPE_cmp() returns 0 if the types are identical and nonzero otherwise.
\fBASN1_TYPE_unpack_sequence() returns a pointer to an \s-1ASN.1\s0 structure or \s-1NULL\s0 on failure.
\fBASN1_TYPE_pack_sequence() return an \s-1ASN1_TYPE\s0 structure if it succeeds or \s-1NULL\s0 on failure.
Licensed under the OpenSSL license (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>.