1=pod 2 3=head1 NAME 4 5PEM_read_bio_ex, PEM_FLAG_SECURE, PEM_FLAG_EAY_COMPATIBLE, 6PEM_FLAG_ONLY_B64 - read PEM format files with custom processing 7 8=head1 SYNOPSIS 9 10 #include <openssl/pem.h> 11 12 #define PEM_FLAG_SECURE 0x1 13 #define PEM_FLAG_EAY_COMPATIBLE 0x2 14 #define PEM_FLAG_ONLY_B64 0x4 15 int PEM_read_bio_ex(BIO *in, char **name, char **header, 16 unsigned char **data, long *len, unsigned int flags); 17 18=head1 DESCRIPTION 19 20PEM_read_bio_ex() reads in PEM formatted data from an input BIO, outputting 21the name of the type of contained data, the header information regarding 22the possibly encrypted data, and the binary data payload (after base64 decoding). 23It should generally only be used to implement PEM_read_bio_-family functions 24for specific data types or other usage, but is exposed to allow greater flexibility 25over how processing is performed, if needed. 26 27If PEM_FLAG_SECURE is set, the intermediate buffers used to read in lines of 28input are allocated from the secure heap. 29 30If PEM_FLAG_EAY_COMPATIBLE is set, a simple algorithm is used to remove whitespace 31and control characters from the end of each line, so as to be compatible with 32the historical behavior of PEM_read_bio(). 33 34If PEM_FLAG_ONLY_B64 is set, all characters are required to be valid base64 35characters (or newlines); non-base64 characters are treated as end of input. 36 37If neither PEM_FLAG_EAY_COMPATIBLE or PEM_FLAG_ONLY_B64 is set, control characters 38are ignored. 39 40If both PEM_FLAG_EAY_COMPATIBLE and PEM_FLAG_ONLY_B64 are set, an error is returned; 41these options are not compatible with each other. 42 43=head1 NOTES 44 45The caller must release the storage allocated for *name, *header, and *data. 46If PEM_FLAG_SECURE was set, use OPENSSL_secure_free(); otherwise, 47OPENSSL_free() is used. 48 49=head1 RETURN VALUES 50 51PEM_read_bio_ex() returns 1 for success or 0 for failure. 52 53=head1 SEE ALSO 54 55L<PEM_bytes_read_bio(3)> 56 57=head1 HISTORY 58 59The PEM_read_bio_ex() function was added in OpenSSL 1.1.1. 60 61=head1 COPYRIGHT 62 63Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. 64 65Licensed under the Apache License 2.0 (the "License"). You may not use 66this file except in compliance with the License. You can obtain a copy 67in the file LICENSE in the source distribution or at 68L<https://www.openssl.org/source/license.html>. 69 70=cut 71