Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/bio/bf_buff.c

Index: openssl/crypto/bio/bf_buff.c
diff --git a/openssl/crypto/bio/bf_buff.c b/openssl/crypto/bio/bf_buff.c
deleted file mode 100644
index 4b5a132d8a18320dab2f78ea7f41378d4456f7c0..0000000000000000000000000000000000000000
--- a/openssl/crypto/bio/bf_buff.c
+++ /dev/null
@@ -1,512 +0,0 @@
-/* crypto/bio/bf_buff.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/bio.h>
-
-static int buffer_write(BIO *h, const char *buf,int num);
-static int buffer_read(BIO *h, char *buf, int size);
-static int buffer_puts(BIO *h, const char *str);
-static int buffer_gets(BIO *h, char *str, int size);
-static long buffer_ctrl(BIO *h, int cmd, long arg1, void *arg2);
-static int buffer_new(BIO *h);
-static int buffer_free(BIO *data);
-static long buffer_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
-#define DEFAULT_BUFFER_SIZE	4096
-
-static BIO_METHOD methods_buffer=
-	{
-	BIO_TYPE_BUFFER,
-	"buffer",
-	buffer_write,
-	buffer_read,
-	buffer_puts,
-	buffer_gets,
-	buffer_ctrl,
-	buffer_new,
-	buffer_free,
-	buffer_callback_ctrl,
-	};
-
-BIO_METHOD *BIO_f_buffer(void)
-	{
-	return(&methods_buffer);
-	}
-
-static int buffer_new(BIO *bi)
-	{
-	BIO_F_BUFFER_CTX *ctx;
-
-	ctx=(BIO_F_BUFFER_CTX *)OPENSSL_malloc(sizeof(BIO_F_BUFFER_CTX));
-	if (ctx == NULL) return(0);
-	ctx->ibuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
-	if (ctx->ibuf == NULL) { OPENSSL_free(ctx); return(0); }
-	ctx->obuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
-	if (ctx->obuf == NULL) { OPENSSL_free(ctx->ibuf); OPENSSL_free(ctx); return(0); }
-	ctx->ibuf_size=DEFAULT_BUFFER_SIZE;
-	ctx->obuf_size=DEFAULT_BUFFER_SIZE;
-	ctx->ibuf_len=0;
-	ctx->ibuf_off=0;
-	ctx->obuf_len=0;
-	ctx->obuf_off=0;
-
-	bi->init=1;
-	bi->ptr=(char *)ctx;
-	bi->flags=0;
-	return(1);
-	}
-
-static int buffer_free(BIO *a)
-	{
-	BIO_F_BUFFER_CTX *b;
-
-	if (a == NULL) return(0);
-	b=(BIO_F_BUFFER_CTX *)a->ptr;
-	if (b->ibuf != NULL) OPENSSL_free(b->ibuf);
-	if (b->obuf != NULL) OPENSSL_free(b->obuf);
-	OPENSSL_free(a->ptr);
-	a->ptr=NULL;
-	a->init=0;
-	a->flags=0;
-	return(1);
-	}
-	
-static int buffer_read(BIO *b, char *out, int outl)
-	{
-	int i,num=0;
-	BIO_F_BUFFER_CTX *ctx;
-
-	if (out == NULL) return(0);
-	ctx=(BIO_F_BUFFER_CTX *)b->ptr;
-
-	if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
-	num=0;
-	BIO_clear_retry_flags(b);
-
-start:
-	i=ctx->ibuf_len;
-	/* If there is stuff left over, grab it */
-	if (i != 0)
-		{
-		if (i > outl) i=outl;
-		memcpy(out,&(ctx->ibuf[ctx->ibuf_off]),i);
-		ctx->ibuf_off+=i;
-		ctx->ibuf_len-=i;
-		num+=i;
-		if (outl == i)  return(num);
-		outl-=i;
-		out+=i;
-		}
-
-	/* We may have done a partial read. try to do more.
-	 * We have nothing in the buffer.
-	 * If we get an error and have read some data, just return it
-	 * and let them retry to get the error again.
-	 * copy direct to parent address space */
-	if (outl > ctx->ibuf_size)
-		{
-		for (;;)
-			{
-			i=BIO_read(b->next_bio,out,outl);
-			if (i <= 0)
-				{
-				BIO_copy_next_retry(b);
-				if (i < 0) return((num > 0)?num:i);
-				if (i == 0) return(num);
-				}
-			num+=i;
-			if (outl == i) return(num);
-			out+=i;
-			outl-=i;
-			}
-		}
-	/* else */
-
-	/* we are going to be doing some buffering */
-	i=BIO_read(b->next_bio,ctx->ibuf,ctx->ibuf_size);
-	if (i <= 0)
-		{
-		BIO_copy_next_retry(b);
-		if (i < 0) return((num > 0)?num:i);
-		if (i == 0) return(num);
-		}
-	ctx->ibuf_off=0;
-	ctx->ibuf_len=i;
-
-	/* Lets re-read using ourselves :-) */
-	goto start;
-	}
-
-static int buffer_write(BIO *b, const char *in, int inl)
-	{
-	int i,num=0;
-	BIO_F_BUFFER_CTX *ctx;
-
-	if ((in == NULL) || (inl <= 0)) return(0);
-	ctx=(BIO_F_BUFFER_CTX *)b->ptr;
-	if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
-
-	BIO_clear_retry_flags(b);
-start:
-	i=ctx->obuf_size-(ctx->obuf_len+ctx->obuf_off);
-	/* add to buffer and return */
-	if (i >= inl)
-		{
-		memcpy(&(ctx->obuf[ctx->obuf_off+ctx->obuf_len]),in,inl);
-		ctx->obuf_len+=inl;
-		return(num+inl);
-		}
-	/* else */
-	/* stuff already in buffer, so add to it first, then flush */
-	if (ctx->obuf_len != 0)
-		{
-		if (i > 0) /* lets fill it up if we can */
-			{
-			memcpy(&(ctx->obuf[ctx->obuf_off+ctx->obuf_len]),in,i);
-			in+=i;
-			inl-=i;
-			num+=i;
-			ctx->obuf_len+=i;
-			}
-		/* we now have a full buffer needing flushing */
-		for (;;)
-			{
-			i=BIO_write(b->next_bio,&(ctx->obuf[ctx->obuf_off]),
-				ctx->obuf_len);
-			if (i <= 0)
-				{
-				BIO_copy_next_retry(b);
-
-				if (i < 0) return((num > 0)?num:i);
-				if (i == 0) return(num);
-				}
-			ctx->obuf_off+=i;
-			ctx->obuf_len-=i;
-			if (ctx->obuf_len == 0) break;
-			}
-		}
-	/* we only get here if the buffer has been flushed and we
-	 * still have stuff to write */
-	ctx->obuf_off=0;
-
-	/* we now have inl bytes to write */
-	while (inl >= ctx->obuf_size)
-		{
-		i=BIO_write(b->next_bio,in,inl);
-		if (i <= 0)
-			{
-			BIO_copy_next_retry(b);
-			if (i < 0) return((num > 0)?num:i);
-			if (i == 0) return(num);
-			}
-		num+=i;
-		in+=i;
-		inl-=i;
-		if (inl == 0) return(num);
-		}
-
-	/* copy the rest into the buffer since we have only a small 
-	 * amount left */
-	goto start;
-	}
-
-static long buffer_ctrl(BIO *b, int cmd, long num, void *ptr)
-	{
-	BIO *dbio;
-	BIO_F_BUFFER_CTX *ctx;
-	long ret=1;
-	char *p1,*p2;
-	int r,i,*ip;
-	int ibs,obs;
-
-	ctx=(BIO_F_BUFFER_CTX *)b->ptr;
-
-	switch (cmd)
-		{
-	case BIO_CTRL_RESET:
-		ctx->ibuf_off=0;
-		ctx->ibuf_len=0;
-		ctx->obuf_off=0;
-		ctx->obuf_len=0;
-		if (b->next_bio == NULL) return(0);
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_INFO:
-		ret=(long)ctx->obuf_len;
-		break;
-	case BIO_C_GET_BUFF_NUM_LINES:
-		ret=0;
-		p1=ctx->ibuf;
-		for (i=0; i<ctx->ibuf_len; i++)
-			{
-			if (p1[ctx->ibuf_off + i] == '\n') ret++;
-			}
-		break;
-	case BIO_CTRL_WPENDING:
-		ret=(long)ctx->obuf_len;
-		if (ret == 0)
-			{
-			if (b->next_bio == NULL) return(0);
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-			}
-		break;
-	case BIO_CTRL_PENDING:
-		ret=(long)ctx->ibuf_len;
-		if (ret == 0)
-			{
-			if (b->next_bio == NULL) return(0);
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-			}
-		break;
-	case BIO_C_SET_BUFF_READ_DATA:
-		if (num > ctx->ibuf_size)
-			{
-			p1=OPENSSL_malloc((int)num);
-			if (p1 == NULL) goto malloc_error;
-			if (ctx->ibuf != NULL) OPENSSL_free(ctx->ibuf);
-			ctx->ibuf=p1;
-			}
-		ctx->ibuf_off=0;
-		ctx->ibuf_len=(int)num;
-		memcpy(ctx->ibuf,ptr,(int)num);
-		ret=1;
-		break;
-	case BIO_C_SET_BUFF_SIZE:
-		if (ptr != NULL)
-			{
-			ip=(int *)ptr;
-			if (*ip == 0)
-				{
-				ibs=(int)num;
-				obs=ctx->obuf_size;
-				}
-			else /* if (*ip == 1) */
-				{
-				ibs=ctx->ibuf_size;
-				obs=(int)num;
-				}
-			}
-		else
-			{
-			ibs=(int)num;
-			obs=(int)num;
-			}
-		p1=ctx->ibuf;
-		p2=ctx->obuf;
-		if ((ibs > DEFAULT_BUFFER_SIZE) && (ibs != ctx->ibuf_size))
-			{
-			p1=(char *)OPENSSL_malloc((int)num);
-			if (p1 == NULL) goto malloc_error;
-			}
-		if ((obs > DEFAULT_BUFFER_SIZE) && (obs != ctx->obuf_size))
-			{
-			p2=(char *)OPENSSL_malloc((int)num);
-			if (p2 == NULL)
-				{
-				if (p1 != ctx->ibuf) OPENSSL_free(p1);
-				goto malloc_error;
-				}
-			}
-		if (ctx->ibuf != p1)
-			{
-			OPENSSL_free(ctx->ibuf);
-			ctx->ibuf=p1;
-			ctx->ibuf_off=0;
-			ctx->ibuf_len=0;
-			ctx->ibuf_size=ibs;
-			}
-		if (ctx->obuf != p2)
-			{
-			OPENSSL_free(ctx->obuf);
-			ctx->obuf=p2;
-			ctx->obuf_off=0;
-			ctx->obuf_len=0;
-			ctx->obuf_size=obs;
-			}
-		break;
-	case BIO_C_DO_STATE_MACHINE:
-		if (b->next_bio == NULL) return(0);
-		BIO_clear_retry_flags(b);
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		BIO_copy_next_retry(b);
-		break;
-
-	case BIO_CTRL_FLUSH:
-		if (b->next_bio == NULL) return(0);
-		if (ctx->obuf_len <= 0)
-			{
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-			break;
-			}
-
-		for (;;)
-			{
-			BIO_clear_retry_flags(b);
-			if (ctx->obuf_len > 0)
-				{
-				r=BIO_write(b->next_bio,
-					&(ctx->obuf[ctx->obuf_off]),
-					ctx->obuf_len);
-#if 0
-fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len,r);
-#endif
-				BIO_copy_next_retry(b);
-				if (r <= 0) return((long)r);
-				ctx->obuf_off+=r;
-				ctx->obuf_len-=r;
-				}
-			else
-				{
-				ctx->obuf_len=0;
-				ctx->obuf_off=0;
-				ret=1;
-				break;
-				}
-			}
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_DUP:
-		dbio=(BIO *)ptr;
-		if (	!BIO_set_read_buffer_size(dbio,ctx->ibuf_size) ||
-			!BIO_set_write_buffer_size(dbio,ctx->obuf_size))
-			ret=0;
-		break;
-	default:
-		if (b->next_bio == NULL) return(0);
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		break;
-		}
-	return(ret);
-malloc_error:
-	BIOerr(BIO_F_BUFFER_CTRL,ERR_R_MALLOC_FAILURE);
-	return(0);
-	}
-
-static long buffer_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);
-	}
-
-static int buffer_gets(BIO *b, char *buf, int size)
-	{
-	BIO_F_BUFFER_CTX *ctx;
-	int num=0,i,flag;
-	char *p;
-
-	ctx=(BIO_F_BUFFER_CTX *)b->ptr;
-	size--; /* reserve space for a '\0' */
-	BIO_clear_retry_flags(b);
-
-	for (;;)
-		{
-		if (ctx->ibuf_len > 0)
-			{
-			p= &(ctx->ibuf[ctx->ibuf_off]);
-			flag=0;
-			for (i=0; (i<ctx->ibuf_len) && (i<size); i++)
-				{
-				*(buf++)=p[i];
-				if (p[i] == '\n')
-					{
-					flag=1;
-					i++;
-					break;
-					}
-				}
-			num+=i;
-			size-=i;
-			ctx->ibuf_len-=i;
-			ctx->ibuf_off+=i;
-			if (flag || size == 0)
-				{
-				*buf='\0';
-				return(num);
-				}
-			}
-		else	/* read another chunk */
-			{
-			i=BIO_read(b->next_bio,ctx->ibuf,ctx->ibuf_size);
-			if (i <= 0)
-				{
-				BIO_copy_next_retry(b);
-				*buf='\0';
-				if (i < 0) return((num > 0)?num:i);
-				if (i == 0) return(num);
-				}
-			ctx->ibuf_len=i;
-			ctx->ibuf_off=0;
-			}
-		}
-	}
-
-static int buffer_puts(BIO *b, const char *str)
-	{
-	return(buffer_write(b,str,strlen(str)));
-	}
-