1 .\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.19)
4 .\" ========================================================================
5 .de Sp \" Vertical space (when we can't use .PP)
9 .de Vb \" Begin verbatim text
14 .de Ve \" End verbatim text
18 .\" Set up some character translations and predefined strings. \*(-- will
19 .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
20 .\" double quote, and \*(R" will give a right double quote. \*(C+ will
21 .\" give a nicer C++. Capital omega is used to do unbreakable dashes and
22 .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
23 .\" nothing in troff, for use with C<>.
25 .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
29 . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
30 . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
43 .\" Escape single quotes in literal strings from groff's Unicode transform.
47 .\" If the F register is turned on, we'll generate index entries on stderr for
48 .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
49 .\" entries marked with X<> in POD. Of course, you'll have to process the
50 .\" output yourself in some meaningful fashion.
53 . tm Index:\\$1\t\\n%\t"\\$2"
63 .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
64 .\" Fear. Run. Save yourself. No user-serviceable parts.
65 . \" fudge factors for nroff and troff
74 . ds #H ((1u-(\\\\n(.fu%2u))*.13m)
80 . \" simple accents for nroff and troff
90 . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
91 . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
92 . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
93 . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
94 . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
95 . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
97 . \" troff and (daisy-wheel) nroff accents
98 .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
99 .ds 8 \h'\*(#H'\(*b\h'-\*(#H'
100 .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
101 .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
102 .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
103 .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
104 .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
105 .ds ae a\h'-(\w'a'u*4/10)'e
106 .ds Ae A\h'-(\w'A'u*4/10)'E
107 . \" corrections for vroff
108 .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
109 .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
110 . \" for low resolution devices (crt and lpr)
111 .if \n(.H>23 .if \n(.V>19 \
124 .\" ========================================================================
126 .IX Title "BIO_find_type 3"
127 .TH BIO_find_type 3 "2012-05-10" "1.0.1c" "OpenSSL"
128 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
129 .\" way too many mistakes in technical documents.
133 BIO_find_type, BIO_next \- BIO chain traversal
135 .IX Header "SYNOPSIS"
137 \& #include <openssl/bio.h>
139 \& BIO * BIO_find_type(BIO *b,int bio_type);
140 \& BIO * BIO_next(BIO *b);
142 \& #define BIO_method_type(b) ((b)\->method\->type)
144 \& #define BIO_TYPE_NONE 0
145 \& #define BIO_TYPE_MEM (1|0x0400)
146 \& #define BIO_TYPE_FILE (2|0x0400)
148 \& #define BIO_TYPE_FD (4|0x0400|0x0100)
149 \& #define BIO_TYPE_SOCKET (5|0x0400|0x0100)
150 \& #define BIO_TYPE_NULL (6|0x0400)
151 \& #define BIO_TYPE_SSL (7|0x0200)
152 \& #define BIO_TYPE_MD (8|0x0200)
153 \& #define BIO_TYPE_BUFFER (9|0x0200)
154 \& #define BIO_TYPE_CIPHER (10|0x0200)
155 \& #define BIO_TYPE_BASE64 (11|0x0200)
156 \& #define BIO_TYPE_CONNECT (12|0x0400|0x0100)
157 \& #define BIO_TYPE_ACCEPT (13|0x0400|0x0100)
158 \& #define BIO_TYPE_PROXY_CLIENT (14|0x0200)
159 \& #define BIO_TYPE_PROXY_SERVER (15|0x0200)
160 \& #define BIO_TYPE_NBIO_TEST (16|0x0200)
161 \& #define BIO_TYPE_NULL_FILTER (17|0x0200)
162 \& #define BIO_TYPE_BER (18|0x0200)
163 \& #define BIO_TYPE_BIO (19|0x0400)
165 \& #define BIO_TYPE_DESCRIPTOR 0x0100
166 \& #define BIO_TYPE_FILTER 0x0200
167 \& #define BIO_TYPE_SOURCE_SINK 0x0400
170 .IX Header "DESCRIPTION"
171 The \fIBIO_find_type()\fR searches for a \s-1BIO\s0 of a given type in a chain, starting
172 at \s-1BIO\s0 \fBb\fR. If \fBtype\fR is a specific type (such as \s-1BIO_TYPE_MEM\s0) then a search
173 is made for a \s-1BIO\s0 of that type. If \fBtype\fR is a general type (such as
174 \&\fB\s-1BIO_TYPE_SOURCE_SINK\s0\fR) then the next matching \s-1BIO\s0 of the given general type is
175 searched for. \fIBIO_find_type()\fR returns the next matching \s-1BIO\s0 or \s-1NULL\s0 if none is
178 Note: not all the \fBBIO_TYPE_*\fR types above have corresponding \s-1BIO\s0 implementations.
180 \&\fIBIO_next()\fR returns the next \s-1BIO\s0 in a chain. It can be used to traverse all BIOs
181 in a chain or used in conjunction with \fIBIO_find_type()\fR to find all BIOs of a
184 \&\fIBIO_method_type()\fR returns the type of a \s-1BIO\s0.
186 .IX Header "RETURN VALUES"
187 \&\fIBIO_find_type()\fR returns a matching \s-1BIO\s0 or \s-1NULL\s0 for no match.
189 \&\fIBIO_next()\fR returns the next \s-1BIO\s0 in a chain.
191 \&\fIBIO_method_type()\fR returns the type of the \s-1BIO\s0 \fBb\fR.
194 \&\fIBIO_next()\fR was added to OpenSSL 0.9.6 to provide a 'clean' way to traverse a \s-1BIO\s0
195 chain or find multiple matches using \fIBIO_find_type()\fR. Previous versions had to
199 \& next = bio\->next_bio;
203 \&\fIBIO_find_type()\fR in OpenSSL 0.9.5a and earlier could not be safely passed a
204 \&\s-1NULL\s0 pointer for the \fBb\fR argument.
207 Traverse a chain looking for digest BIOs:
211 \& btmp = in_bio; /* in_bio is chain to search through */
214 \& btmp = BIO_find_type(btmp, BIO_TYPE_MD);
215 \& if(btmp == NULL) break; /* Not found */
216 \& /* btmp is a digest BIO, do something with it ...*/
219 \& btmp = BIO_next(btmp);
223 .IX Header "SEE ALSO"