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132.TH BIO_f_base64 3 "2010-03-24" "0.9.8n" "OpenSSL"
| 127.TH BIO_f_base64 3 "2010-11-16" "0.9.8p" "OpenSSL" 128.\" For nroff, turn off justification. Always turn off hyphenation; it makes 129.\" way too many mistakes in technical documents. 130.if n .ad l 131.nh
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133.SH "NAME" 134BIO_f_base64 \- base64 BIO filter 135.SH "SYNOPSIS" 136.IX Header "SYNOPSIS" 137.Vb 2 138\& #include <openssl/bio.h> 139\& #include <openssl/evp.h>
| 132.SH "NAME" 133BIO_f_base64 \- base64 BIO filter 134.SH "SYNOPSIS" 135.IX Header "SYNOPSIS" 136.Vb 2 137\& #include <openssl/bio.h> 138\& #include <openssl/evp.h>
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140.Ve 141.PP 142.Vb 1
| 139\&
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143\& BIO_METHOD * BIO_f_base64(void); 144.Ve 145.SH "DESCRIPTION" 146.IX Header "DESCRIPTION" 147\&\fIBIO_f_base64()\fR returns the base64 \s-1BIO\s0 method. This is a filter 148\&\s-1BIO\s0 that base64 encodes any data written through it and decodes 149any data read through it. 150.PP
| 140\& BIO_METHOD * BIO_f_base64(void); 141.Ve 142.SH "DESCRIPTION" 143.IX Header "DESCRIPTION" 144\&\fIBIO_f_base64()\fR returns the base64 \s-1BIO\s0 method. This is a filter 145\&\s-1BIO\s0 that base64 encodes any data written through it and decodes 146any data read through it. 147.PP
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151Base64 BIOs do not support \fIBIO_gets()\fR or \fIBIO_puts()\fR.
| 148Base64 BIOs do not support \fIBIO_gets()\fR or \fIBIO_puts()\fR.
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152.PP 153\&\fIBIO_flush()\fR on a base64 \s-1BIO\s0 that is being written through is 154used to signal that no more data is to be encoded: this is used 155to flush the final block through the \s-1BIO\s0. 156.PP 157The flag \s-1BIO_FLAGS_BASE64_NO_NL\s0 can be set with \fIBIO_set_flags()\fR 158to encode the data all on one line or expect the data to be all 159on one line. 160.SH "NOTES" 161.IX Header "NOTES" 162Because of the format of base64 encoding the end of the encoded 163block cannot always be reliably determined. 164.SH "RETURN VALUES" 165.IX Header "RETURN VALUES" 166\&\fIBIO_f_base64()\fR returns the base64 \s-1BIO\s0 method. 167.SH "EXAMPLES" 168.IX Header "EXAMPLES" 169Base64 encode the string \*(L"Hello World\en\*(R" and write the result 170to standard output: 171.PP 172.Vb 2 173\& BIO *bio, *b64; 174\& char message[] = "Hello World \en";
| 149.PP 150\&\fIBIO_flush()\fR on a base64 \s-1BIO\s0 that is being written through is 151used to signal that no more data is to be encoded: this is used 152to flush the final block through the \s-1BIO\s0. 153.PP 154The flag \s-1BIO_FLAGS_BASE64_NO_NL\s0 can be set with \fIBIO_set_flags()\fR 155to encode the data all on one line or expect the data to be all 156on one line. 157.SH "NOTES" 158.IX Header "NOTES" 159Because of the format of base64 encoding the end of the encoded 160block cannot always be reliably determined. 161.SH "RETURN VALUES" 162.IX Header "RETURN VALUES" 163\&\fIBIO_f_base64()\fR returns the base64 \s-1BIO\s0 method. 164.SH "EXAMPLES" 165.IX Header "EXAMPLES" 166Base64 encode the string \*(L"Hello World\en\*(R" and write the result 167to standard output: 168.PP 169.Vb 2 170\& BIO *bio, *b64; 171\& char message[] = "Hello World \en";
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175.Ve 176.PP 177.Vb 5
| 172\&
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178\& b64 = BIO_new(BIO_f_base64()); 179\& bio = BIO_new_fp(stdout, BIO_NOCLOSE); 180\& bio = BIO_push(b64, bio); 181\& BIO_write(bio, message, strlen(message)); 182\& BIO_flush(bio);
| 173\& b64 = BIO_new(BIO_f_base64()); 174\& bio = BIO_new_fp(stdout, BIO_NOCLOSE); 175\& bio = BIO_push(b64, bio); 176\& BIO_write(bio, message, strlen(message)); 177\& BIO_flush(bio);
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183.Ve 184.PP 185.Vb 1
| 178\&
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186\& BIO_free_all(bio); 187.Ve 188.PP 189Read Base64 encoded data from standard input and write the decoded 190data to standard output: 191.PP 192.Vb 3 193\& BIO *bio, *b64, *bio_out; 194\& char inbuf[512]; 195\& int inlen;
| 179\& BIO_free_all(bio); 180.Ve 181.PP 182Read Base64 encoded data from standard input and write the decoded 183data to standard output: 184.PP 185.Vb 3 186\& BIO *bio, *b64, *bio_out; 187\& char inbuf[512]; 188\& int inlen;
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196.Ve 197.PP 198.Vb 6
| 189\&
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199\& b64 = BIO_new(BIO_f_base64()); 200\& bio = BIO_new_fp(stdin, BIO_NOCLOSE); 201\& bio_out = BIO_new_fp(stdout, BIO_NOCLOSE); 202\& bio = BIO_push(b64, bio); 203\& while((inlen = BIO_read(bio, inbuf, 512)) > 0) 204\& BIO_write(bio_out, inbuf, inlen);
| 190\& b64 = BIO_new(BIO_f_base64()); 191\& bio = BIO_new_fp(stdin, BIO_NOCLOSE); 192\& bio_out = BIO_new_fp(stdout, BIO_NOCLOSE); 193\& bio = BIO_push(b64, bio); 194\& while((inlen = BIO_read(bio, inbuf, 512)) > 0) 195\& BIO_write(bio_out, inbuf, inlen);
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205.Ve 206.PP 207.Vb 1
| 196\&
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208\& BIO_free_all(bio); 209.Ve 210.SH "BUGS" 211.IX Header "BUGS" 212The ambiguity of \s-1EOF\s0 in base64 encoded data can cause additional 213data following the base64 encoded block to be misinterpreted. 214.PP 215There should be some way of specifying a test that the \s-1BIO\s0 can perform 216to reliably determine \s-1EOF\s0 (for example a \s-1MIME\s0 boundary). 217.SH "SEE ALSO" 218.IX Header "SEE ALSO" 219\&\s-1TBA\s0
| 197\& BIO_free_all(bio); 198.Ve 199.SH "BUGS" 200.IX Header "BUGS" 201The ambiguity of \s-1EOF\s0 in base64 encoded data can cause additional 202data following the base64 encoded block to be misinterpreted. 203.PP 204There should be some way of specifying a test that the \s-1BIO\s0 can perform 205to reliably determine \s-1EOF\s0 (for example a \s-1MIME\s0 boundary). 206.SH "SEE ALSO" 207.IX Header "SEE ALSO" 208\&\s-1TBA\s0
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