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PEM_read_bio_ex.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" PEM_read_bio_ex, PEM_FLAG_SECURE, PEM_FLAG_EAY_COMPATIBLE, PEM_FLAG_ONLY_B64 \- read PEM format files with custom processing .SH "SYNOPSIS" .IX 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 .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBPEM_read_bio_ex()\fR 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. .PP If \s-1PEM_FLAG_SECURE\s0 is set, the intermediate buffers used to read in lines of input are allocated from the secure heap. .PP 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 \fBPEM_read_bio()\fR. .PP 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. .PP If neither \s-1PEM_FLAG_EAY_COMPATIBLE\s0 or \s-1PEM_FLAG_ONLY_B64\s0 is set, control characters are ignored. .PP 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. .SH "NOTES" .IX Header "NOTES" The caller must release the storage allocated for *name, *header, and *data. If \s-1PEM_FLAG_SECURE\s0 was set, use \fBOPENSSL_secure_free()\fR; otherwise, \&\fBOPENSSL_free()\fR is used. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBPEM_read_bio_ex()\fR returns 1 for success or 0 for failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBPEM_bytes_read_bio\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" The \fBPEM_read_bio_ex()\fR function was added in OpenSSL 1.1.1. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. .PP 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>.
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