Import of old SSLeay release: SSLeay 0.8.1b

1 files changed, 484 insertions, 0 deletions

diff --git a/crypto/bio/bss_acpt.c b/crypto/bio/bss_acpt.c
new file mode 100644
index 0000000000..251474198b
--- /dev/null
+++ b/crypto/bio/bss_acpt.c
@@ -0,0 +1,484 @@
+/* crypto/bio/bss_acpt.c */
+/* Copyright (C) 1995-1997 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 NO_SOCK
+
+#include <stdio.h>
+#include <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#include "bio.h"
+
+/*	BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
+
+#ifdef WIN16
+#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
+#else
+#define SOCKET_PROTOCOL IPPROTO_TCP
+#endif
+
+typedef struct bio_accept_st
+	{
+	int state;
+	char *param_addr;
+
+	int accept_sock;
+	int accept_nbio;
+
+	char *addr;
+	int nbio;
+	BIO *bio_chain;
+	} BIO_ACCEPT;
+
+#ifndef NOPROTO
+static int acpt_write(BIO *h,char *buf,int num);
+static int acpt_read(BIO *h,char *buf,int size);
+static int acpt_puts(BIO *h,char *str);
+static long acpt_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int acpt_new(BIO *h);
+static int acpt_free(BIO *data);
+#else
+static int acpt_write();
+static int acpt_read();
+static int acpt_puts();
+static long acpt_ctrl();
+static int acpt_new();
+static int acpt_free();
+#endif
+
+#ifndef NOPROTO
+static int acpt_state(BIO *b, BIO_ACCEPT *c);
+static void acpt_close_socket(BIO *data);
+BIO_ACCEPT *BIO_ACCEPT_new(void );
+void BIO_ACCEPT_free(BIO_ACCEPT *a);
+
+#else
+
+static int acpt_state();
+static void acpt_close_socket();
+BIO_ACCEPT *BIO_ACCEPT_new();
+void BIO_ACCEPT_free();
+#endif
+
+#define ACPT_S_BEFORE			1
+#define ACPT_S_GET_ACCEPT_SOCKET	2
+#define ACPT_S_OK			3
+
+static BIO_METHOD methods_acceptp=
+	{
+	BIO_TYPE_ACCEPT,"socket accept",
+	acpt_write,
+	acpt_read,
+	acpt_puts,
+	NULL, /* connect_gets, */
+	acpt_ctrl,
+	acpt_new,
+	acpt_free,
+	};
+
+BIO_METHOD *BIO_s_accept()
+	{
+	return(&methods_acceptp);
+	}
+
+static int acpt_new(bi)
+BIO *bi;
+	{
+	BIO_ACCEPT *ba;
+
+	bi->init=0;
+	bi->num=INVALID_SOCKET;
+	bi->flags=0;
+	if ((ba=BIO_ACCEPT_new()) == NULL)
+		return(0);
+	bi->ptr=(char *)ba;
+	ba->state=ACPT_S_BEFORE;
+	bi->shutdown=1;
+	return(1);
+	}
+
+BIO_ACCEPT *BIO_ACCEPT_new()
+	{
+	BIO_ACCEPT *ret;
+
+	if ((ret=(BIO_ACCEPT *)Malloc(sizeof(BIO_ACCEPT))) == NULL)
+		return(NULL);
+
+	memset(ret,0,sizeof(BIO_ACCEPT));
+	ret->accept_sock=INVALID_SOCKET;
+	return(ret);
+	}
+
+void BIO_ACCEPT_free(a)
+BIO_ACCEPT *a;
+	{
+	if (a->param_addr != NULL) Free(a->param_addr);
+	if (a->addr != NULL) Free(a->addr);
+	if (a->bio_chain != NULL) BIO_free(a->bio_chain);
+	Free(a);
+	}
+
+static void acpt_close_socket(bio)
+BIO *bio;
+	{
+	BIO_ACCEPT *c;
+
+	c=(BIO_ACCEPT *)bio->ptr;
+	if (c->accept_sock != INVALID_SOCKET)
+		{
+		shutdown(c->accept_sock,2);
+# ifdef WINDOWS
+		closesocket(c->accept_sock);
+# else
+		close(c->accept_sock);
+# endif
+		c->accept_sock=INVALID_SOCKET;
+		bio->num=INVALID_SOCKET;
+		}
+	}
+
+static int acpt_free(a)
+BIO *a;
+	{
+	BIO_ACCEPT *data;
+
+	if (a == NULL) return(0);
+	data=(BIO_ACCEPT *)a->ptr;
+	 
+	if (a->shutdown)
+		{
+		acpt_close_socket(a);
+		BIO_ACCEPT_free(data);
+		a->ptr=NULL;
+		a->flags=0;
+		a->init=0;
+		}
+	return(1);
+	}
+	
+static int acpt_state(b,c)
+BIO *b;
+BIO_ACCEPT *c;
+	{
+	BIO *bio=NULL,*dbio;
+	unsigned long l=1;
+	int s= -1;
+	int i;
+
+again:
+	switch (c->state)
+		{
+	case ACPT_S_BEFORE:
+		if (c->param_addr == NULL)
+			{
+			BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
+			return(-1);
+			}
+		s=BIO_get_accept_socket(c->param_addr);
+		if (s == INVALID_SOCKET)
+			return(-1);
+
+#ifdef FIONBIO
+		if (c->accept_nbio)
+			{
+			i=BIO_socket_ioctl(b->num,FIONBIO,&l);
+			if (i < 0)
+				{
+#ifdef WINDOWS
+				closesocket(s);
+#else
+				close(s);
+# endif
+				BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
+				return(-1);
+				}
+			}
+#endif
+		c->accept_sock=s;
+		b->num=s;
+		c->state=ACPT_S_GET_ACCEPT_SOCKET;
+		return(1);
+		break;
+	case ACPT_S_GET_ACCEPT_SOCKET:
+		if (b->next_bio != NULL)
+			{
+			c->state=ACPT_S_OK;
+			goto again;
+			}
+		i=BIO_accept(c->accept_sock,&(c->addr));
+		if (i < 0) return(i);
+		bio=BIO_new_socket(i,BIO_CLOSE);
+		if (bio == NULL) goto err;
+
+		BIO_set_callback(bio,BIO_get_callback(b));
+		BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
+
+#ifdef FIONBIO
+		if (c->nbio)
+			{
+			i=BIO_socket_ioctl(i,FIONBIO,&l);
+			if (i < 0)
+				{
+				BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
+				goto err;
+				}
+			}
+#endif
+
+		/* If the accept BIO has an bio_chain, we dup it and
+		 * put the new socket at the end. */
+		if (c->bio_chain != NULL)
+			{
+			if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
+				goto err;
+			if (!BIO_push(dbio,bio)) goto err;
+			bio=dbio;
+			}
+		if (BIO_push(b,bio) == NULL) goto err;
+
+		c->state=ACPT_S_OK;
+		return(1);
+err:
+		if (bio != NULL)
+			BIO_free(bio);
+		else if (s >= 0)
+			{
+#ifdef WINDOWS
+			closesocket(s);
+#else
+			close(s);
+# endif
+			}
+		return(0);
+		break;
+	case ACPT_S_OK:
+		if (b->next_bio == NULL)
+			{
+			c->state=ACPT_S_GET_ACCEPT_SOCKET;
+			goto again;
+			}
+		return(1);
+		break;
+	default:	
+		return(0);
+		break;
+		}
+
+	}
+
+static int acpt_read(b,out,outl)
+BIO *b;
+char *out;
+int outl;
+	{
+	int ret=0;
+	BIO_ACCEPT *data;
+
+        BIO_clear_retry_flags(b);
+	data=(BIO_ACCEPT *)b->ptr;
+
+	while (b->next_bio == NULL)
+		{
+		ret=acpt_state(b,data);
+		if (ret <= 0) return(ret);
+		}
+
+	ret=BIO_read(b->next_bio,out,outl);
+	BIO_copy_next_retry(b);
+	return(ret);
+	}
+
+static int acpt_write(b,in,inl)
+BIO *b;
+char *in;
+int inl;
+	{
+	int ret;
+	BIO_ACCEPT *data;
+
+	BIO_clear_retry_flags(b);
+	data=(BIO_ACCEPT *)b->ptr;
+
+	while (b->next_bio == NULL)
+		{
+		ret=acpt_state(b,data);
+		if (ret <= 0) return(ret);
+		}
+
+	ret=BIO_write(b->next_bio,in,inl);
+	BIO_copy_next_retry(b);
+	return(ret);
+	}
+
+static long acpt_ctrl(b,cmd,num,ptr)
+BIO *b;
+int cmd;
+long num;
+char *ptr;
+	{
+	BIO *dbio;
+	int *ip;
+	long ret=1;
+	BIO_ACCEPT *data;
+
+	data=(BIO_ACCEPT *)b->ptr;
+
+	switch (cmd)
+		{
+	case BIO_CTRL_RESET:
+		ret=0;
+		data->state=ACPT_S_BEFORE;
+		acpt_close_socket(b);
+		b->flags=0;
+		break;
+	case BIO_C_DO_STATE_MACHINE:
+		/* use this one to start the connection */
+		ret=(long)acpt_state(b,data);
+		break;
+	case BIO_C_SET_ACCEPT:
+		if (ptr != NULL)
+			{
+			if (num == 0)
+				{
+				b->init=1;
+				if (data->param_addr != NULL)
+					Free(data->param_addr);
+				data->param_addr=BUF_strdup(ptr);
+				}
+			else if (num == 1)
+				{
+				data->accept_nbio=(ptr != NULL);
+				}
+			else if (num == 2)
+				{
+				if (data->bio_chain != NULL)
+					BIO_free(data->bio_chain);
+				data->bio_chain=(BIO *)ptr;
+				}
+			}
+		break;
+	case BIO_C_SET_NBIO:
+		data->nbio=(int)num;
+		break;
+	case BIO_C_GET_FD:
+		if (b->init)
+			{
+			ip=(int *)ptr;
+			if (ip != NULL)
+				*ip=data->accept_sock;
+			ret=b->num;
+			}
+		else
+			ret= -1;
+		break;
+	case BIO_CTRL_GET_CLOSE:
+		ret=b->shutdown;
+		break;
+	case BIO_CTRL_SET_CLOSE:
+		b->shutdown=(int)num;
+		break;
+	case BIO_CTRL_PENDING:
+	case BIO_CTRL_WPENDING:
+		ret=0;
+		break;
+	case BIO_CTRL_FLUSH:
+		break;
+	case BIO_CTRL_DUP:
+		dbio=(BIO *)ptr;
+/*		if (data->param_port) EAY EAY
+			BIO_set_port(dbio,data->param_port);
+		if (data->param_hostname)
+			BIO_set_hostname(dbio,data->param_hostname);
+		BIO_set_nbio(dbio,data->nbio); */
+		break;
+
+	default:
+		ret=0;
+		break;
+		}
+	return(ret);
+	}
+
+static int acpt_puts(bp,str)
+BIO *bp;
+char *str;
+	{
+	int n,ret;
+
+	n=strlen(str);
+	ret=acpt_write(bp,str,n);
+	return(ret);
+	}
+
+BIO *BIO_new_accept(str)
+char *str;
+	{
+	BIO *ret;
+
+	ret=BIO_new(BIO_s_accept());
+	if (ret == NULL) return(NULL);
+	if (BIO_set_accept_port(ret,str))
+		return(ret);
+	else
+		{
+		BIO_free(ret);
+		return(NULL);
+		}
+	}
+
+#endif