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Diffstat (limited to 'secure/lib/libcrypto/man/BIO_f_base64.3')
| -rw-r--r-- | secure/lib/libcrypto/man/BIO_f_base64.3 | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/BIO_f_base64.3 b/secure/lib/libcrypto/man/BIO_f_base64.3 new file mode 100644 index 0000000..1e13318 --- /dev/null +++ b/secure/lib/libcrypto/man/BIO_f_base64.3 @@ -0,0 +1,224 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:15:25 2002 +.\" +.\" Standard preamble: +.\" ====================================================================== +.de Sh \" Subsection heading +.br +.if t .Sp +.ne 5 +.PP +\fB\\$1\fR +.PP +.. +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Ip \" List item +.br +.ie \\n(.$>=3 .ne \\$3 +.el .ne 3 +.IP "\\$1" \\$2 +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R + +.fi +.. +.\" 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. | will give a +.\" real vertical bar. \*(C+ will give a nicer C++. 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This is a filter +\&\s-1BIO\s0 that base64 encodes any data written through it and decodes +any data read through it. +.PP +Base64 BIOs do not support \fIBIO_gets()\fR or \fIBIO_puts()\fR. +.PP +\&\fIBIO_flush()\fR on a base64 \s-1BIO\s0 that is being written through is +used to signal that no more data is to be encoded: this is used +to flush the final block through the \s-1BIO\s0. +.PP +The flag \s-1BIO_FLAGS_BASE64_NO_NL\s0 can be set with \fIBIO_set_flags()\fR +to encode the data all on one line or expect the data to be all +on one line. +.SH "NOTES" +.IX Header "NOTES" +Because of the format of base64 encoding the end of the encoded +block cannot always be reliably determined. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fIBIO_f_base64()\fR returns the base64 \s-1BIO\s0 method. +.SH "EXAMPLES" +.IX Header "EXAMPLES" +Base64 encode the string \*(L"Hello World\en\*(R" and write the result +to standard output: +.PP +.Vb 2 +\& BIO *bio, *b64; +\& char message[] = "Hello World \en"; +.Ve +.Vb 5 +\& b64 = BIO_new(BIO_f_base64()); +\& bio = BIO_new_fp(stdout, BIO_NOCLOSE); +\& bio = BIO_push(b64, bio); +\& BIO_write(bio, message, strlen(message)); +\& BIO_flush(bio); +.Ve +.Vb 1 +\& BIO_free_all(bio); +.Ve +Read Base64 encoded data from standard input and write the decoded +data to standard output: +.PP +.Vb 4 +\& BIO *bio, *b64, bio_out; +\& char inbuf[512]; +\& int inlen; +\& char message[] = "Hello World \en"; +.Ve +.Vb 6 +\& b64 = BIO_new(BIO_f_base64()); +\& bio = BIO_new_fp(stdin, BIO_NOCLOSE); +\& bio_out = BIO_new_fp(stdout, BIO_NOCLOSE); +\& bio = BIO_push(b64, bio); +\& while((inlen = BIO_read(bio, inbuf, strlen(message))) > 0) +\& BIO_write(bio_out, inbuf, inlen); +.Ve +.Vb 1 +\& BIO_free_all(bio); +.Ve +.SH "BUGS" +.IX Header "BUGS" +The ambiguity of \s-1EOF\s0 in base64 encoded data can cause additional +data following the base64 encoded block to be misinterpreted. +.PP +There should be some way of specifying a test that the \s-1BIO\s0 can perform +to reliably determine \s-1EOF\s0 (for example a \s-1MIME\s0 boundary). +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\s-1TBA\s0 |
