Delete bundled copy of OpenSSL and replace with README.

openssl/ssl/bio_ssl.c

Index: openssl/ssl/bio_ssl.c
diff --git a/openssl/ssl/bio_ssl.c b/openssl/ssl/bio_ssl.c
deleted file mode 100644
index 06a13de492a5a7f928f50c3f4deec3c81ff0c0ab..0000000000000000000000000000000000000000
--- a/openssl/ssl/bio_ssl.c
+++ /dev/null
@@ -1,613 +0,0 @@
-/* ssl/bio_ssl.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 <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <openssl/crypto.h>
-#include <openssl/bio.h>
-#include <openssl/err.h>
-#include <openssl/ssl.h>
-
-static int ssl_write(BIO *h, const char *buf, int num);
-static int ssl_read(BIO *h, char *buf, int size);
-static int ssl_puts(BIO *h, const char *str);
-static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
-static int ssl_new(BIO *h);
-static int ssl_free(BIO *data);
-static long ssl_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
-typedef struct bio_ssl_st
-	{
-	SSL *ssl; /* The ssl handle :-) */
-	/* re-negotiate every time the total number of bytes is this size */
-	int num_renegotiates;
-	unsigned long renegotiate_count;
-	unsigned long byte_count;
-	unsigned long renegotiate_timeout;
-	unsigned long last_time;
-	} BIO_SSL;
-
-static BIO_METHOD methods_sslp=
-	{
-	BIO_TYPE_SSL,"ssl",
-	ssl_write,
-	ssl_read,
-	ssl_puts,
-	NULL, /* ssl_gets, */
-	ssl_ctrl,
-	ssl_new,
-	ssl_free,
-	ssl_callback_ctrl,
-	};
-
-BIO_METHOD *BIO_f_ssl(void)
-	{
-	return(&methods_sslp);
-	}
-
-static int ssl_new(BIO *bi)
-	{
-	BIO_SSL *bs;
-
-	bs=(BIO_SSL *)OPENSSL_malloc(sizeof(BIO_SSL));
-	if (bs == NULL)
-		{
-		BIOerr(BIO_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
-		return(0);
-		}
-	memset(bs,0,sizeof(BIO_SSL));
-	bi->init=0;
-	bi->ptr=(char *)bs;
-	bi->flags=0;
-	return(1);
-	}
-
-static int ssl_free(BIO *a)
-	{
-	BIO_SSL *bs;
-
-	if (a == NULL) return(0);
-	bs=(BIO_SSL *)a->ptr;
-	if (bs->ssl != NULL) SSL_shutdown(bs->ssl);
-	if (a->shutdown)
-		{
-		if (a->init && (bs->ssl != NULL))
-			SSL_free(bs->ssl);
-		a->init=0;
-		a->flags=0;
-		}
-	if (a->ptr != NULL)
-		OPENSSL_free(a->ptr);
-	return(1);
-	}
-	
-static int ssl_read(BIO *b, char *out, int outl)
-	{
-	int ret=1;
-	BIO_SSL *sb;
-	SSL *ssl;
-	int retry_reason=0;
-	int r=0;
-
-	if (out == NULL) return(0);
-	sb=(BIO_SSL *)b->ptr;
-	ssl=sb->ssl;
-
-	BIO_clear_retry_flags(b);
-
-#if 0
-	if (!SSL_is_init_finished(ssl))
-		{
-/*		ret=SSL_do_handshake(ssl); */
-		if (ret > 0)
-			{
-
-			outflags=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
-			ret= -1;
-			goto end;
-			}
-		}
-#endif
-/*	if (ret > 0) */
-	ret=SSL_read(ssl,out,outl);
-
-	switch (SSL_get_error(ssl,ret))
-		{
-	case SSL_ERROR_NONE:
-		if (ret <= 0) break;
-		if (sb->renegotiate_count > 0)
-			{
-			sb->byte_count+=ret;
-			if (sb->byte_count > sb->renegotiate_count)
-				{
-				sb->byte_count=0;
-				sb->num_renegotiates++;
-				SSL_renegotiate(ssl);
-				r=1;
-				}
-			}
-		if ((sb->renegotiate_timeout > 0) && (!r))
-			{
-			unsigned long tm;
-
-			tm=(unsigned long)time(NULL);
-			if (tm > sb->last_time+sb->renegotiate_timeout)
-				{
-				sb->last_time=tm;
-				sb->num_renegotiates++;
-				SSL_renegotiate(ssl);
-				}
-			}
-
-		break;
-	case SSL_ERROR_WANT_READ:
-		BIO_set_retry_read(b);
-		break;
-	case SSL_ERROR_WANT_WRITE:
-		BIO_set_retry_write(b);
-		break;
-	case SSL_ERROR_WANT_X509_LOOKUP:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_SSL_X509_LOOKUP;
-		break;
-	case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_SSL_CHANNEL_ID_LOOKUP;
-		break;
-	case SSL_ERROR_WANT_ACCEPT:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_ACCEPT;
-		break;
-	case SSL_ERROR_WANT_CONNECT:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_CONNECT;
-		break;
-	case SSL_ERROR_SYSCALL:
-	case SSL_ERROR_SSL:
-	case SSL_ERROR_ZERO_RETURN:
-	default:
-		break;
-		}
-
-	b->retry_reason=retry_reason;
-	return(ret);
-	}
-
-static int ssl_write(BIO *b, const char *out, int outl)
-	{
-	int ret,r=0;
-	int retry_reason=0;
-	SSL *ssl;
-	BIO_SSL *bs;
-
-	if (out == NULL) return(0);
-	bs=(BIO_SSL *)b->ptr;
-	ssl=bs->ssl;
-
-	BIO_clear_retry_flags(b);
-
-/*	ret=SSL_do_handshake(ssl);
-	if (ret > 0) */
-	ret=SSL_write(ssl,out,outl);
-
-	switch (SSL_get_error(ssl,ret))
-		{
-	case SSL_ERROR_NONE:
-		if (ret <= 0) break;
-		if (bs->renegotiate_count > 0)
-			{
-			bs->byte_count+=ret;
-			if (bs->byte_count > bs->renegotiate_count)
-				{
-				bs->byte_count=0;
-				bs->num_renegotiates++;
-				SSL_renegotiate(ssl);
-				r=1;
-				}
-			}
-		if ((bs->renegotiate_timeout > 0) && (!r))
-			{
-			unsigned long tm;
-
-			tm=(unsigned long)time(NULL);
-			if (tm > bs->last_time+bs->renegotiate_timeout)
-				{
-				bs->last_time=tm;
-				bs->num_renegotiates++;
-				SSL_renegotiate(ssl);
-				}
-			}
-		break;
-	case SSL_ERROR_WANT_WRITE:
-		BIO_set_retry_write(b);
-		break;
-	case SSL_ERROR_WANT_READ:
-		BIO_set_retry_read(b);
-		break;
-	case SSL_ERROR_WANT_X509_LOOKUP:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_SSL_X509_LOOKUP;
-		break;
-	case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_SSL_CHANNEL_ID_LOOKUP;
-		break;
-	case SSL_ERROR_WANT_CONNECT:
-		BIO_set_retry_special(b);
-		retry_reason=BIO_RR_CONNECT;
-	case SSL_ERROR_SYSCALL:
-	case SSL_ERROR_SSL:
-	default:
-		break;
-		}
-
-	b->retry_reason=retry_reason;
-	return(ret);
-	}
-
-static long ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
-	{
-	SSL **sslp,*ssl;
-	BIO_SSL *bs;
-	BIO *dbio,*bio;
-	long ret=1;
-
-	bs=(BIO_SSL *)b->ptr;
-	ssl=bs->ssl;
-	if ((ssl == NULL)  && (cmd != BIO_C_SET_SSL))
-		return(0);
-	switch (cmd)
-		{
-	case BIO_CTRL_RESET:
-		SSL_shutdown(ssl);
-
-		if (ssl->handshake_func == ssl->method->ssl_connect)
-			SSL_set_connect_state(ssl);
-		else if (ssl->handshake_func == ssl->method->ssl_accept)
-			SSL_set_accept_state(ssl);
-
-		SSL_clear(ssl);
-
-		if (b->next_bio != NULL)
-			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
-		else if (ssl->rbio != NULL)
-			ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
-		else
-			ret=1;
-		break;
-	case BIO_CTRL_INFO:
-		ret=0;
-		break;
-	case BIO_C_SSL_MODE:
-		if (num) /* client mode */
-			SSL_set_connect_state(ssl);
-		else
-			SSL_set_accept_state(ssl);
-		break;
-	case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
-		ret=bs->renegotiate_timeout;
-		if (num < 60) num=5;
-		bs->renegotiate_timeout=(unsigned long)num;
-		bs->last_time=(unsigned long)time(NULL);
-		break;
-	case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
-		ret=bs->renegotiate_count;
-		if ((long)num >=512)
-			bs->renegotiate_count=(unsigned long)num;
-		break;
-	case BIO_C_GET_SSL_NUM_RENEGOTIATES:
-		ret=bs->num_renegotiates;
-		break;
-	case BIO_C_SET_SSL:
-		if (ssl != NULL)
-			{
-			ssl_free(b);
-			if (!ssl_new(b))
-				return 0;
-			}
-		b->shutdown=(int)num;
-		ssl=(SSL *)ptr;
-		((BIO_SSL *)b->ptr)->ssl=ssl;
-		bio=SSL_get_rbio(ssl);
-		if (bio != NULL)
-			{
-			if (b->next_bio != NULL)
-				BIO_push(bio,b->next_bio);
-			b->next_bio=bio;
-			CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO);
-			}
-		b->init=1;
-		break;
-	case BIO_C_GET_SSL:
-		if (ptr != NULL)
-			{
-			sslp=(SSL **)ptr;
-			*sslp=ssl;
-			}
-		else
-			ret=0;
-		break;
-	case BIO_CTRL_GET_CLOSE:
-		ret=b->shutdown;
-		break;
-	case BIO_CTRL_SET_CLOSE:
-		b->shutdown=(int)num;
-		break;
-	case BIO_CTRL_WPENDING:
-		ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_PENDING:
-		ret=SSL_pending(ssl);
-		if (ret == 0)
-			ret=BIO_pending(ssl->rbio);
-		break;
-	case BIO_CTRL_FLUSH:
-		BIO_clear_retry_flags(b);
-		ret=BIO_ctrl(ssl->wbio,cmd,num,ptr);
-		BIO_copy_next_retry(b);
-		break;
-	case BIO_CTRL_PUSH:
-		if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio))
-			{
-			SSL_set_bio(ssl,b->next_bio,b->next_bio);
-			CRYPTO_add(&b->next_bio->references,1,CRYPTO_LOCK_BIO);
-			}
-		break;
-	case BIO_CTRL_POP:
-		/* Only detach if we are the BIO explicitly being popped */
-		if (b == ptr)
-			{
-			/* Shouldn't happen in practice because the
-			 * rbio and wbio are the same when pushed.
-			 */
-			if (ssl->rbio != ssl->wbio)
-				BIO_free_all(ssl->wbio);
-			if (b->next_bio != NULL)
-				CRYPTO_add(&b->next_bio->references,-1,CRYPTO_LOCK_BIO);
-			ssl->wbio=NULL;
-			ssl->rbio=NULL;
-			}
-		break;
-	case BIO_C_DO_STATE_MACHINE:
-		BIO_clear_retry_flags(b);
-
-		b->retry_reason=0;
-		ret=(int)SSL_do_handshake(ssl);
-
-		switch (SSL_get_error(ssl,(int)ret))
-			{
-		case SSL_ERROR_WANT_READ:
-			BIO_set_flags(b,
-				BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
-			break;
-		case SSL_ERROR_WANT_WRITE:
-			BIO_set_flags(b,
-				BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
-			break;
-		case SSL_ERROR_WANT_CONNECT:
-			BIO_set_flags(b,
-				BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
-			b->retry_reason=b->next_bio->retry_reason;
-			break;
-		default:
-			break;
-			}
-		break;
-	case BIO_CTRL_DUP:
-		dbio=(BIO *)ptr;
-		if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
-			SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
-		((BIO_SSL *)dbio->ptr)->ssl=SSL_dup(ssl);
-		((BIO_SSL *)dbio->ptr)->renegotiate_count=
-			((BIO_SSL *)b->ptr)->renegotiate_count;
-		((BIO_SSL *)dbio->ptr)->byte_count=
-			((BIO_SSL *)b->ptr)->byte_count;
-		((BIO_SSL *)dbio->ptr)->renegotiate_timeout=
-			((BIO_SSL *)b->ptr)->renegotiate_timeout;
-		((BIO_SSL *)dbio->ptr)->last_time=
-			((BIO_SSL *)b->ptr)->last_time;
-		ret=(((BIO_SSL *)dbio->ptr)->ssl != NULL);
-		break;
-	case BIO_C_GET_FD:
-		ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
-		break;
-	case BIO_CTRL_SET_CALLBACK:
-		{
-#if 0 /* FIXME: Should this be used?  -- Richard Levitte */
-		SSLerr(SSL_F_SSL_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
-		ret = -1;
-#else
-		ret=0;
-#endif
-		}
-		break;
-	case BIO_CTRL_GET_CALLBACK:
-		{
-		void (**fptr)(const SSL *xssl,int type,int val);
-
-		fptr=(void (**)(const SSL *xssl,int type,int val))ptr;
-		*fptr=SSL_get_info_callback(ssl);
-		}
-		break;
-	default:
-		ret=BIO_ctrl(ssl->rbio,cmd,num,ptr);
-		break;
-		}
-	return(ret);
-	}
-
-static long ssl_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
-	{
-	SSL *ssl;
-	BIO_SSL *bs;
-	long ret=1;
-
-	bs=(BIO_SSL *)b->ptr;
-	ssl=bs->ssl;
-	switch (cmd)
-		{
-	case BIO_CTRL_SET_CALLBACK:
-		{
-		/* FIXME: setting this via a completely different prototype
-		   seems like a crap idea */
-		SSL_set_info_callback(ssl,(void (*)(const SSL *,int,int))fp);
-		}
-		break;
-	default:
-		ret=BIO_callback_ctrl(ssl->rbio,cmd,fp);
-		break;
-		}
-	return(ret);
-	}
-
-static int ssl_puts(BIO *bp, const char *str)
-	{
-	int n,ret;
-
-	n=strlen(str);
-	ret=BIO_write(bp,str,n);
-	return(ret);
-	}
-
-BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
-	{
-#ifndef OPENSSL_NO_SOCK
-	BIO *ret=NULL,*buf=NULL,*ssl=NULL;
-
-	if ((buf=BIO_new(BIO_f_buffer())) == NULL)
-		return(NULL);
-	if ((ssl=BIO_new_ssl_connect(ctx)) == NULL)
-		goto err;
-	if ((ret=BIO_push(buf,ssl)) == NULL)
-		goto err;
-	return(ret);
-err:
-	if (buf != NULL) BIO_free(buf);
-	if (ssl != NULL) BIO_free(ssl);
-#endif
-	return(NULL);
-	}
-
-BIO *BIO_new_ssl_connect(SSL_CTX *ctx)
-	{
-#ifndef OPENSSL_NO_SOCK
-	BIO *ret=NULL,*con=NULL,*ssl=NULL;
-
-	if ((con=BIO_new(BIO_s_connect())) == NULL)
-		return(NULL);
-	if ((ssl=BIO_new_ssl(ctx,1)) == NULL)
-		goto err;
-	if ((ret=BIO_push(ssl,con)) == NULL)
-		goto err;
-	return(ret);
-err:
-	if (con != NULL) BIO_free(con);
-#endif
-	return(NULL);
-	}
-
-BIO *BIO_new_ssl(SSL_CTX *ctx, int client)
-	{
-	BIO *ret;
-	SSL *ssl;
-
-	if ((ret=BIO_new(BIO_f_ssl())) == NULL)
-		return(NULL);
-	if ((ssl=SSL_new(ctx)) == NULL)
-		{
-		BIO_free(ret);
-		return(NULL);
-		}
-	if (client)
-		SSL_set_connect_state(ssl);
-	else
-		SSL_set_accept_state(ssl);
-		
-	BIO_set_ssl(ret,ssl,BIO_CLOSE);
-	return(ret);
-	}
-
-int BIO_ssl_copy_session_id(BIO *t, BIO *f)
-	{
-	t=BIO_find_type(t,BIO_TYPE_SSL);
-	f=BIO_find_type(f,BIO_TYPE_SSL);
-	if ((t == NULL) || (f == NULL))
-		return(0);
-	if (	(((BIO_SSL *)t->ptr)->ssl == NULL) || 
-		(((BIO_SSL *)f->ptr)->ssl == NULL))
-		return(0);
-	SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl,((BIO_SSL *)f->ptr)->ssl);
-	return(1);
-	}
-
-void BIO_ssl_shutdown(BIO *b)
-	{
-	SSL *s;
-
-	while (b != NULL)
-		{
-		if (b->method->type == BIO_TYPE_SSL)
-			{
-			s=((BIO_SSL *)b->ptr)->ssl;
-			SSL_shutdown(s);
-			break;
-			}
-		b=b->next_bio;
-		}
-	}