Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/evp/bio_enc.c

Index: openssl/crypto/evp/bio_enc.c
diff --git a/openssl/crypto/evp/bio_enc.c b/openssl/crypto/evp/bio_enc.c
deleted file mode 100644
index b6efb5fbc4b1f3288e3e6b14f3cbbd238fc45e6d..0000000000000000000000000000000000000000
--- a/openssl/crypto/evp/bio_enc.c
+++ /dev/null
@@ -1,428 +0,0 @@
-/* crypto/evp/bio_enc.c */
-/* 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.]
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include "cryptlib.h"
-#include <openssl/buffer.h>
-#include <openssl/evp.h>
-
-static int enc_write(BIO *h, const char *buf, int num);
-static int enc_read(BIO *h, char *buf, int size);
-/*static int enc_puts(BIO *h, const char *str); */
-/*static int enc_gets(BIO *h, char *str, int size); */
-static long enc_ctrl(BIO *h, int cmd, long arg1, void *arg2);
-static int enc_new(BIO *h);
-static int enc_free(BIO *data);
-static long enc_callback_ctrl(BIO *h, int cmd, bio_info_cb *fps);
-#define ENC_BLOCK_SIZE	(1024*4)
-#define BUF_OFFSET	(EVP_MAX_BLOCK_LENGTH*2)
-
-typedef struct enc_struct
-	{
-	int buf_len;
-	int buf_off;
-	int cont;		/* <= 0 when finished */
-	int finished;
-	int ok;			/* bad decrypt */
-	EVP_CIPHER_CTX cipher;
-	/* buf is larger than ENC_BLOCK_SIZE because EVP_DecryptUpdate
-	 * can return up to a block more data than is presented to it
-	 */
-	char buf[ENC_BLOCK_SIZE+BUF_OFFSET+2];
-	} BIO_ENC_CTX;
-
-static BIO_METHOD methods_enc=
-	{
-	BIO_TYPE_CIPHER,"cipher",
-	enc_write,
-	enc_read,
-	NULL, /* enc_puts, */
-	NULL, /* enc_gets, */
-	enc_ctrl,
-	enc_new,
-	enc_free,
-	enc_callback_ctrl,
-	};
-
-BIO_METHOD *BIO_f_cipher(void)
-	{
-	return(&methods_enc);
-	}
-
-static int enc_new(BIO *bi)
-	{
-	BIO_ENC_CTX *ctx;
-
-	ctx=(BIO_ENC_CTX *)OPENSSL_malloc(sizeof(BIO_ENC_CTX));
-	if (ctx == NULL) return(0);
-	EVP_CIPHER_CTX_init(&ctx->cipher);
-
-	ctx->buf_len=0;
-	ctx->buf_off=0;
-	ctx->cont=1;
-	ctx->finished=0;
-	ctx->ok=1;
-
-	bi->init=0;
-	bi->ptr=(char *)ctx;
-	bi->flags=0;
-	return(1);
-	}
-
-static int enc_free(BIO *a)
-	{
-	BIO_ENC_CTX *b;
-
-	if (a == NULL) return(0);
-	b=(BIO_ENC_CTX *)a->ptr;
-	EVP_CIPHER_CTX_cleanup(&(b->cipher));
-	OPENSSL_cleanse(a->ptr,sizeof(BIO_ENC_CTX));
-	OPENSSL_free(a->ptr);
-	a->ptr=NULL;
-	a->init=0;
-	a->flags=0;
-	return(1);
-	}
-	
-static int enc_read(BIO *b, char *out, int outl)
-	{
-	int ret=0,i;
-	BIO_ENC_CTX *ctx;
-
-	if (out == NULL) return(0);
-	ctx=(BIO_ENC_CTX *)b->ptr;
-
-	if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
-
-	/* First check if there are bytes decoded/encoded */
-	if (ctx->buf_len > 0)
-		{
-		i=ctx->buf_len-ctx->buf_off;
-		if (i > outl) i=outl;
-		memcpy(out,&(ctx->buf[ctx->buf_off]),i);
-		ret=i;
-		out+=i;
-		outl-=i;
-		ctx->buf_off+=i;
-		if (ctx->buf_len == ctx->buf_off)
-			{
-			ctx->buf_len=0;
-			ctx->buf_off=0;
-			}
-		}
-
-	/* At this point, we have room of outl bytes and an empty
-	 * buffer, so we should read in some more. */
-
-	while (outl > 0)
-		{
-		if (ctx->cont <= 0) break;
-
-		/* read in at IV offset, read the EVP_Cipher
-		 * documentation about why */
-		i=BIO_read(b->next_bio,&(ctx->buf[BUF_OFFSET]),ENC_BLOCK_SIZE);
-
-		if (i <= 0)
-			{
-			/* Should be continue next time we are called? */
-			if (!BIO_should_retry(b->next_bio))
-				{
-				ctx->cont=i;
-				i=EVP_CipherFinal_ex(&(ctx->cipher),
-					(unsigned char *)ctx->buf,
-					&(ctx->buf_len));
-				ctx->ok=i;
-				ctx->buf_off=0;
-				}
-			else 
-				{
-				ret=(ret == 0)?i:ret;
-				break;
-				}
-			}
-		else
-			{
-			EVP_CipherUpdate(&(ctx->cipher),
-				(unsigned char *)ctx->buf,&ctx->buf_len,
-				(unsigned char *)&(ctx->buf[BUF_OFFSET]),i);
-			ctx->cont=1;
-			/* Note: it is possible for EVP_CipherUpdate to
-			 * decrypt zero bytes because this is or looks like
-			 * the final block: if this happens we should retry
-			 * and either read more data or decrypt the final
-			 * block
-			 */
-			if(ctx->buf_len == 0) continue;
-			}
-
-		if (ctx->buf_len <= outl)
-			i=ctx->buf_len;
-		else
-			i=outl;
-		if (i <= 0) break;
-		memcpy(out,ctx->buf,i);
-		ret+=i;
-		ctx->buf_off=i;
-		outl-=i;
-		out+=i;
-		}
-
-	BIO_clear_retry_flags(b);
-	BIO_copy_next_retry(b);
-	return((ret == 0)?ctx->cont:ret);
-	}
-
-static int enc_write(BIO *b, const char *in, int inl)
-	{
-	int ret=0,n,i;
-	BIO_ENC_CTX *ctx;
-
-	ctx=(BIO_ENC_CTX *)b->ptr;
-	ret=inl;
-
-	BIO_clear_retry_flags(b);
-	n=ctx->buf_len-ctx->buf_off;
-	while (n > 0)
-		{
-		i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);
-		if (i <= 0)
-			{
-			BIO_copy_next_retry(b);
-			return(i);
-			}
-		ctx->buf_off+=i;
-		n-=i;
-		}
-	/* at this point all pending data has been written */
-
-	if ((in == NULL) || (inl <= 0)) return(0);
-
-	ctx->buf_off=0;
-	while (inl > 0)
-		{
-		n=(inl > ENC_BLOCK_SIZE)?ENC_BLOCK_SIZE:inl;
-		EVP_CipherUpdate(&(ctx->cipher),
-			(unsigned char *)ctx->buf,&ctx->buf_len,
-			(unsigned char *)in,n);
-		inl-=n;
-		in+=n;
-
-		ctx->buf_off=0;
-		n=ctx->buf_len;
-		while (n > 0)
-			{
-			i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);
-			if (i <= 0)
-				{
-				BIO_copy_next_retry(b);
-				return (ret == inl) ? i : ret - inl;
-				}
-			n-=i;
-			ctx->buf_off+=i;
-			}
-		ctx->buf_len=0;
-		ctx->buf_off=0;
-		}
-	BIO_copy_next_retry(b);
-	return(ret);
-	}
-
-static long enc_ctrl(BIO *b, int cmd, long num, void *ptr)
-	{
-	BIO *dbio;
-	BIO_ENC_CTX *ctx,*dctx;
-	long ret=1;
-	int i;
-	EVP_CIPHER_CTX **c_ctx;
-
-	ctx=(BIO_ENC_CTX *)b->ptr;
-
-	switch (cmd)
-		{
-	case BIO_CTRL_RESET:
-		ctx->ok=1;
-		ctx->finished=0;
-		EVP_CipherInit_ex(&(ctx->cipher),NULL,NULL,NULL,NULL,
-			ctx->cipher.encrypt);
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_EOF:	/* More to read */
-		if (ctx->cont <= 0)
-			ret=1;
-		else
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_WPENDING:
-		ret=ctx->buf_len-ctx->buf_off;
-		if (ret <= 0)
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_PENDING: /* More to read in buffer */
-		ret=ctx->buf_len-ctx->buf_off;
-		if (ret <= 0)
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_FLUSH:
-		/* do a final write */
-again:
-		while (ctx->buf_len != ctx->buf_off)
-			{
-			i=enc_write(b,NULL,0);
-			if (i < 0)
-				return i;
-			}
-
-		if (!ctx->finished)
-			{
-			ctx->finished=1;
-			ctx->buf_off=0;
-			ret=EVP_CipherFinal_ex(&(ctx->cipher),
-				(unsigned char *)ctx->buf,
-				&(ctx->buf_len));
-			ctx->ok=(int)ret;
-			if (ret <= 0) break;
-
-			/* push out the bytes */
-			goto again;
-			}
-		
-		/* Finally flush the underlying BIO */
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_C_GET_CIPHER_STATUS:
-		ret=(long)ctx->ok;
-		break;
-	case BIO_C_DO_STATE_MACHINE:
-		BIO_clear_retry_flags(b);
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		BIO_copy_next_retry(b);
-		break;
-	case BIO_C_GET_CIPHER_CTX:
-		c_ctx=(EVP_CIPHER_CTX **)ptr;
-		(*c_ctx)= &(ctx->cipher);
-		b->init=1;
-		break;
-	case BIO_CTRL_DUP:
-		dbio=(BIO *)ptr;
-		dctx=(BIO_ENC_CTX *)dbio->ptr;
-		EVP_CIPHER_CTX_init(&dctx->cipher);
-		ret = EVP_CIPHER_CTX_copy(&dctx->cipher,&ctx->cipher);
-		if (ret)
-			dbio->init=1;
-		break;
-	default:
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-		}
-	return(ret);
-	}
-
-static long enc_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
-	{
-	long ret=1;
-
-	if (b->next_bio == NULL) return(0);
-	switch (cmd)
-		{
-	default:
-		ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
-		break;
-		}
-	return(ret);
-	}
-
-/*
-void BIO_set_cipher_ctx(b,c)
-BIO *b;
-EVP_CIPHER_ctx *c;
-	{
-	if (b == NULL) return;
-
-	if ((b->callback != NULL) &&
-		(b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0))
-		return;
-
-	b->init=1;
-	ctx=(BIO_ENC_CTX *)b->ptr;
-	memcpy(ctx->cipher,c,sizeof(EVP_CIPHER_CTX));
-	
-	if (b->callback != NULL)
-		b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L);
-	}
-*/
-
-void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
-	     const unsigned char *i, int e)
-	{
-	BIO_ENC_CTX *ctx;
-
-	if (b == NULL) return;
-
-	if ((b->callback != NULL) &&
-		(b->callback(b,BIO_CB_CTRL,(const char *)c,BIO_CTRL_SET,e,0L) <= 0))
-		return;
-
-	b->init=1;
-	ctx=(BIO_ENC_CTX *)b->ptr;
-	EVP_CipherInit_ex(&(ctx->cipher),c,NULL, k,i,e);
-	
-	if (b->callback != NULL)
-		b->callback(b,BIO_CB_CTRL,(const char *)c,BIO_CTRL_SET,e,1L);
-	}
-