--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BASE64_H
+#define OPENSSL_HEADER_BASE64_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// base64 functions.
+//
+// For historical reasons, these functions have the EVP_ prefix but just do
+// base64 encoding and decoding.
+
+
+// Encoding
+
+// EVP_EncodeBlock encodes |src_len| bytes from |src| and writes the
+// result to |dst| with a trailing NUL. It returns the number of bytes
+// written, not including this trailing NUL.
+OPENSSL_EXPORT size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src,
+ size_t src_len);
+
+// EVP_EncodedLength sets |*out_len| to the number of bytes that will be needed
+// to call |EVP_EncodeBlock| on an input of length |len|. This includes the
+// final NUL that |EVP_EncodeBlock| writes. It returns one on success or zero
+// on error.
+OPENSSL_EXPORT int EVP_EncodedLength(size_t *out_len, size_t len);
+
+
+// Decoding
+
+// EVP_DecodedLength sets |*out_len| to the maximum number of bytes that will
+// be needed to call |EVP_DecodeBase64| on an input of length |len|. It returns
+// one on success or zero if |len| is not a valid length for a base64-encoded
+// string.
+OPENSSL_EXPORT int EVP_DecodedLength(size_t *out_len, size_t len);
+
+// EVP_DecodeBase64 decodes |in_len| bytes from base64 and writes
+// |*out_len| bytes to |out|. |max_out| is the size of the output
+// buffer. If it is not enough for the maximum output size, the
+// operation fails. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DecodeBase64(uint8_t *out, size_t *out_len,
+ size_t max_out, const uint8_t *in,
+ size_t in_len);
+
+
+// Deprecated functions.
+//
+// OpenSSL provides a streaming base64 implementation, however its behavior is
+// very specific to PEM. It is also very lenient of invalid input. Use of any of
+// these functions is thus deprecated.
+
+// EVP_EncodeInit initialises |*ctx|, which is typically stack
+// allocated, for an encoding operation.
+//
+// NOTE: The encoding operation breaks its output with newlines every
+// 64 characters of output (48 characters of input). Use
+// EVP_EncodeBlock to encode raw base64.
+OPENSSL_EXPORT void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_EncodeUpdate encodes |in_len| bytes from |in| and writes an encoded
+// version of them to |out| and sets |*out_len| to the number of bytes written.
+// Some state may be contained in |ctx| so |EVP_EncodeFinal| must be used to
+// flush it before using the encoded data.
+OPENSSL_EXPORT void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+ int *out_len, const uint8_t *in,
+ size_t in_len);
+
+// EVP_EncodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written.
+OPENSSL_EXPORT void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+ int *out_len);
+
+// EVP_DecodeInit initialises |*ctx|, which is typically stack allocated, for
+// a decoding operation.
+//
+// TODO(davidben): This isn't a straight-up base64 decode either. Document
+// and/or fix exactly what's going on here; maximum line length and such.
+OPENSSL_EXPORT void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_DecodeUpdate decodes |in_len| bytes from |in| and writes the decoded
+// data to |out| and sets |*out_len| to the number of bytes written. Some state
+// may be contained in |ctx| so |EVP_DecodeFinal| must be used to flush it
+// before using the encoded data.
+//
+// It returns -1 on error, one if a full line of input was processed and zero
+// if the line was short (i.e. it was the last line).
+OPENSSL_EXPORT int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+ int *out_len, const uint8_t *in,
+ size_t in_len);
+
+// EVP_DecodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written. It returns one on success
+// and minus one on error.
+OPENSSL_EXPORT int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+ int *out_len);
+
+// EVP_DecodeBlock encodes |src_len| bytes from |src| and writes the result to
+// |dst|. It returns the number of bytes written or -1 on error.
+//
+// WARNING: EVP_DecodeBlock's return value does not take padding into
+// account. It also strips leading whitespace and trailing
+// whitespace and minuses.
+OPENSSL_EXPORT int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src,
+ size_t src_len);
+
+
+struct evp_encode_ctx_st {
+ // data_used indicates the number of bytes of |data| that are valid. When
+ // encoding, |data| will be filled and encoded as a lump. When decoding, only
+ // the first four bytes of |data| will be used.
+ unsigned data_used;
+ uint8_t data[48];
+
+ // eof_seen indicates that the end of the base64 data has been seen when
+ // decoding. Only whitespace can follow.
+ char eof_seen;
+
+ // error_encountered indicates that invalid base64 data was found. This will
+ // cause all future calls to fail.
+ char error_encountered;
+};
+
+
+#if defined(__cplusplus)
+} // extern C
+#endif
+
+#endif // OPENSSL_HEADER_BASE64_H
git://repos.xcallymotion.com / motion2.git / blobdiff