xref: /freebsd/secure/lib/libcrypto/man/man3/PEM_read_bio_ex.3 (revision 8ddb146abcdf061be9f2c0db7e391697dafad85c)
Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40)

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 "PEM_READ_BIO_EX 3"
PEM_READ_BIO_EX 3 "2022-07-05" "1.1.1q" "OpenSSL"
For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
"NAME"
PEM_read_bio_ex, PEM_FLAG_SECURE, PEM_FLAG_EAY_COMPATIBLE, PEM_FLAG_ONLY_B64 - read PEM format files with custom processing
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/pem.h> \& #define PEM_FLAG_SECURE 0x1 #define PEM_FLAG_EAY_COMPATIBLE 0x2 #define PEM_FLAG_ONLY_B64 0x4 int PEM_read_bio_ex(BIO *in, char **name, char **header, unsigned char **data, long *len, unsigned int flags); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBPEM_read_bio_ex() reads in \s-1PEM\s0 formatted data from an input \s-1BIO,\s0 outputting the name of the type of contained data, the header information regarding the possibly encrypted data, and the binary data payload (after base64 decoding). It should generally only be used to implement PEM_read_bio_-family functions for specific data types or other usage, but is exposed to allow greater flexibility over how processing is performed, if needed.

If \s-1PEM_FLAG_SECURE\s0 is set, the intermediate buffers used to read in lines of input are allocated from the secure heap.

If \s-1PEM_FLAG_EAY_COMPATIBLE\s0 is set, a simple algorithm is used to remove whitespace and control characters from the end of each line, so as to be compatible with the historical behavior of PEM_read_bio().

If \s-1PEM_FLAG_ONLY_B64\s0 is set, all characters are required to be valid base64 characters (or newlines); non-base64 characters are treated as end of input.

If neither \s-1PEM_FLAG_EAY_COMPATIBLE\s0 or \s-1PEM_FLAG_ONLY_B64\s0 is set, control characters are ignored.

If both \s-1PEM_FLAG_EAY_COMPATIBLE\s0 and \s-1PEM_FLAG_ONLY_B64\s0 are set, an error is returned; these options are not compatible with each other.

"NOTES"
Header "NOTES" The caller must release the storage allocated for *name, *header, and *data. If \s-1PEM_FLAG_SECURE\s0 was set, use OPENSSL_secure_free(); otherwise, \fBOPENSSL_free() is used.
"RETURN VALUES"
Header "RETURN VALUES" \fBPEM_read_bio_ex() returns 1 for success or 0 for failure.
"SEE ALSO"
Header "SEE ALSO" \fBPEM_bytes_read_bio\|(3)
"HISTORY"
Header "HISTORY" The PEM_read_bio_ex() function was added in OpenSSL 1.1.1.
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.

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>.