lib/openssl/crypto/bio/bss_rtcp.c - kernel/lk - Gitiles

 /* crypto/bio/bss_rtcp.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.]
  */

 /* Written by David L. Jones <jonesd@kcgl1.eng.ohio-state.edu>
  * Date:   22-JUL-1996
  * Revised: 25-SEP-1997		Update for 0.8.1, BIO_CTRL_SET -> BIO_C_SET_FD
  */
 /* VMS */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
 #include "cryptlib.h"
 #include <openssl/bio.h>

 #include <iodef.h>		/* VMS IO$_ definitions */
 #include <starlet.h>

 typedef unsigned short io_channel;
 /*************************************************************************/
 struct io_status { short status, count; long flags; };

 struct rpc_msg {		/* Should have member alignment inhibited */
    char channel;		/* 'A'-app data. 'R'-remote client 'G'-global */
    char function;		/* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
    unsigned short int length;	/* Amount of data returned or max to return */
    char data[4092];		/* variable data */
 };
 #define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)

 struct rpc_ctx {
     int filled, pos;
     struct rpc_msg msg;
 };

 static int rtcp_write(BIO *h,const char *buf,int num);
 static int rtcp_read(BIO *h,char *buf,int size);
 static int rtcp_puts(BIO *h,const char *str);
 static int rtcp_gets(BIO *h,char *str,int size);
 static long rtcp_ctrl(BIO *h,int cmd,long arg1,void *arg2);
 static int rtcp_new(BIO *h);
 static int rtcp_free(BIO *data);

 static BIO_METHOD rtcp_method=
 	{
 	BIO_TYPE_FD,
 	"RTCP",
 	rtcp_write,
 	rtcp_read,
 	rtcp_puts,
 	rtcp_gets,
 	rtcp_ctrl,
 	rtcp_new,
 	rtcp_free,
 	NULL,
 	};

 BIO_METHOD *BIO_s_rtcp(void)
 	{
 	return(&rtcp_method);
 	}
 /*****************************************************************************/
 /* Decnet I/O routines.
  */

 #ifdef __DECC
 #pragma message save
 #pragma message disable DOLLARID
 #endif

 static int get ( io_channel chan, char *buffer, int maxlen, int *length )
 {
     int status;
     struct io_status iosb;
     status = sys$qiow ( 0, chan, IO$_READVBLK, &iosb, 0, 0,
 	buffer, maxlen, 0, 0, 0, 0 );
     if ( (status&1) == 1 ) status = iosb.status;
     if ( (status&1) == 1 ) *length = iosb.count;
     return status;
 }

 static int put ( io_channel chan, char *buffer, int length )
 {
     int status;
     struct io_status iosb;
     status = sys$qiow ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,
 	buffer, length, 0, 0, 0, 0 );
     if ( (status&1) == 1 ) status = iosb.status;
     return status;
 }

 #ifdef __DECC
 #pragma message restore
 #endif

 /***************************************************************************/

 static int rtcp_new(BIO *bi)
 {
     struct rpc_ctx *ctx;
 	bi->init=1;
 	bi->num=0;
 	bi->flags = 0;
 	bi->ptr=OPENSSL_malloc(sizeof(struct rpc_ctx));
 	ctx = (struct rpc_ctx *) bi->ptr;
 	ctx->filled = 0;
 	ctx->pos = 0;
 	return(1);
 }

 static int rtcp_free(BIO *a)
 {
 	if (a == NULL) return(0);
 	if ( a->ptr ) OPENSSL_free ( a->ptr );
 	a->ptr = NULL;
 	return(1);
 }

 static int rtcp_read(BIO *b, char *out, int outl)
 {
     int status, length;
     struct rpc_ctx *ctx;
     /*
      * read data, return existing.
      */
     ctx = (struct rpc_ctx *) b->ptr;
     if ( ctx->pos < ctx->filled ) {
 	length = ctx->filled - ctx->pos;
 	if ( length > outl ) length = outl;
 	memmove ( out, &ctx->msg.data[ctx->pos], length );
 	ctx->pos += length;
 	return length;
     }
     /*
      * Requst more data from R channel.
      */
     ctx->msg.channel = 'R';
     ctx->msg.function = 'G';
     ctx->msg.length = sizeof(ctx->msg.data);
     status = put ( b->num, (char *) &ctx->msg, RPC_HDR_SIZE );
     if ( (status&1) == 0 ) {
 	return -1;
     }
     /*
      * Read.
      */
     ctx->pos = ctx->filled = 0;
     status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
     if ( (status&1) == 0 ) length = -1;
     if ( ctx->msg.channel != 'R' || ctx->msg.function != 'C' ) {
 	length = -1;
     }
     ctx->filled = length - RPC_HDR_SIZE;

     if ( ctx->pos < ctx->filled ) {
 	length = ctx->filled - ctx->pos;
 	if ( length > outl ) length = outl;
 	memmove ( out, ctx->msg.data, length );
 	ctx->pos += length;
 	return length;
     }

     return length;
 }

 static int rtcp_write(BIO *b, const char *in, int inl)
 {
     int status, i, segment, length;
     struct rpc_ctx *ctx;
     /*
      * Output data, send in chunks no larger that sizeof(ctx->msg.data).
      */
     ctx = (struct rpc_ctx *) b->ptr;
     for ( i = 0; i < inl; i += segment ) {
 	segment = inl - i;
 	if ( segment > sizeof(ctx->msg.data) ) segment = sizeof(ctx->msg.data);
 	ctx->msg.channel = 'R';
 	ctx->msg.function = 'P';
 	ctx->msg.length = segment;
 	memmove ( ctx->msg.data, &in[i], segment );
 	status = put ( b->num, (char *) &ctx->msg, segment + RPC_HDR_SIZE );
 	if ((status&1) == 0 ) { i = -1; break; }

 	status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
 	if ( ((status&1) == 0) || (length < RPC_HDR_SIZE) ) { i = -1; break; }
 	if ( (ctx->msg.channel != 'R') || (ctx->msg.function != 'C') ) {
 	   printf("unexpected response when confirming put %c %c\n",
 		ctx->msg.channel, ctx->msg.function );

 	}
     }
     return(i);
 }

 static long rtcp_ctrl(BIO *b, int cmd, long num, void *ptr)
 	{
 	long ret=1;

 	switch (cmd)
 		{
 	case BIO_CTRL_RESET:
 	case BIO_CTRL_EOF:
 		ret = 1;
 		break;
 	case BIO_C_SET_FD:
 		b->num = num;
 		ret = 1;
 	 	break;
 	case BIO_CTRL_SET_CLOSE:
 	case BIO_CTRL_FLUSH:
 	case BIO_CTRL_DUP:
 		ret=1;
 		break;
 	case BIO_CTRL_GET_CLOSE:
 	case BIO_CTRL_INFO:
 	case BIO_CTRL_GET:
 	case BIO_CTRL_PENDING:
 	case BIO_CTRL_WPENDING:
 	default:
 		ret=0;
 		break;
 		}
 	return(ret);
 	}

 static int rtcp_gets(BIO *bp, char *buf, int size)
 	{
 	return(0);
 	}

 static int rtcp_puts(BIO *bp, const char *str)
 {
     int length;
     if (str == NULL) return(0);
     length = strlen ( str );
     if ( length == 0 ) return (0);
     return rtcp_write ( bp,str, length );
 }
	/* crypto/bio/bss_rtcp.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.]
	*/

	/* Written by David L. Jones <jonesd@kcgl1.eng.ohio-state.edu>
	* Date: 22-JUL-1996
	* Revised: 25-SEP-1997 Update for 0.8.1, BIO_CTRL_SET -> BIO_C_SET_FD
	*/
	/* VMS */
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <errno.h>
	#include "cryptlib.h"
	#include <openssl/bio.h>

	#include <iodef.h> /* VMS IO$_ definitions */
	#include <starlet.h>

	typedef unsigned short io_channel;
	/*************************************************************************/
	struct io_status { short status, count; long flags; };

	struct rpc_msg { /* Should have member alignment inhibited */
	char channel; /* 'A'-app data. 'R'-remote client 'G'-global */
	char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
	unsigned short int length; /* Amount of data returned or max to return */
	char data[4092]; /* variable data */
	};
	#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)

	struct rpc_ctx {
	int filled, pos;
	struct rpc_msg msg;
	};

	static int rtcp_write(BIO h,const char buf,int num);
	static int rtcp_read(BIO h,char buf,int size);
	static int rtcp_puts(BIO h,const char str);
	static int rtcp_gets(BIO h,char str,int size);
	static long rtcp_ctrl(BIO h,int cmd,long arg1,void arg2);
	static int rtcp_new(BIO *h);
	static int rtcp_free(BIO *data);

	static BIO_METHOD rtcp_method=
	{
	BIO_TYPE_FD,
	"RTCP",
	rtcp_write,
	rtcp_read,
	rtcp_puts,
	rtcp_gets,
	rtcp_ctrl,
	rtcp_new,
	rtcp_free,
	NULL,
	};

	BIO_METHOD *BIO_s_rtcp(void)
	{
	return(&rtcp_method);
	}
	/*****************************************************************************/
	/* Decnet I/O routines.
	*/

	#ifdef __DECC
	#pragma message save
	#pragma message disable DOLLARID
	#endif

	static int get ( io_channel chan, char buffer, int maxlen, int length )
	{
	int status;
	struct io_status iosb;
	status = sys$qiow ( 0, chan, IO$_READVBLK, &iosb, 0, 0,
	buffer, maxlen, 0, 0, 0, 0 );
	if ( (status&1) == 1 ) status = iosb.status;
	if ( (status&1) == 1 ) *length = iosb.count;
	return status;
	}

	static int put ( io_channel chan, char *buffer, int length )
	{
	int status;
	struct io_status iosb;
	status = sys$qiow ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,
	buffer, length, 0, 0, 0, 0 );
	if ( (status&1) == 1 ) status = iosb.status;
	return status;
	}

	#ifdef __DECC
	#pragma message restore
	#endif

	/***************************************************************************/

	static int rtcp_new(BIO *bi)
	{
	struct rpc_ctx *ctx;
	bi->init=1;
	bi->num=0;
	bi->flags = 0;
	bi->ptr=OPENSSL_malloc(sizeof(struct rpc_ctx));
	ctx = (struct rpc_ctx *) bi->ptr;
	ctx->filled = 0;
	ctx->pos = 0;
	return(1);
	}

	static int rtcp_free(BIO *a)
	{
	if (a == NULL) return(0);
	if ( a->ptr ) OPENSSL_free ( a->ptr );
	a->ptr = NULL;
	return(1);
	}

	static int rtcp_read(BIO b, char out, int outl)
	{
	int status, length;
	struct rpc_ctx *ctx;
	/*
	* read data, return existing.
	*/
	ctx = (struct rpc_ctx *) b->ptr;
	if ( ctx->pos < ctx->filled ) {
	length = ctx->filled - ctx->pos;
	if ( length > outl ) length = outl;
	memmove ( out, &ctx->msg.data[ctx->pos], length );
	ctx->pos += length;
	return length;
	}
	/*
	* Requst more data from R channel.
	*/
	ctx->msg.channel = 'R';
	ctx->msg.function = 'G';
	ctx->msg.length = sizeof(ctx->msg.data);
	status = put ( b->num, (char *) &ctx->msg, RPC_HDR_SIZE );
	if ( (status&1) == 0 ) {
	return -1;
	}
	/*
	* Read.
	*/
	ctx->pos = ctx->filled = 0;
	status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
	if ( (status&1) == 0 ) length = -1;
	if ( ctx->msg.channel != 'R' \|\| ctx->msg.function != 'C' ) {
	length = -1;
	}
	ctx->filled = length - RPC_HDR_SIZE;

	if ( ctx->pos < ctx->filled ) {
	length = ctx->filled - ctx->pos;
	if ( length > outl ) length = outl;
	memmove ( out, ctx->msg.data, length );
	ctx->pos += length;
	return length;
	}

	return length;
	}

	static int rtcp_write(BIO b, const char in, int inl)
	{
	int status, i, segment, length;
	struct rpc_ctx *ctx;
	/*
	* Output data, send in chunks no larger that sizeof(ctx->msg.data).
	*/
	ctx = (struct rpc_ctx *) b->ptr;
	for ( i = 0; i < inl; i += segment ) {
	segment = inl - i;
	if ( segment > sizeof(ctx->msg.data) ) segment = sizeof(ctx->msg.data);
	ctx->msg.channel = 'R';
	ctx->msg.function = 'P';
	ctx->msg.length = segment;
	memmove ( ctx->msg.data, &in[i], segment );
	status = put ( b->num, (char *) &ctx->msg, segment + RPC_HDR_SIZE );
	if ((status&1) == 0 ) { i = -1; break; }

	status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
	if ( ((status&1) == 0) \|\| (length < RPC_HDR_SIZE) ) { i = -1; break; }
	if ( (ctx->msg.channel != 'R') \|\| (ctx->msg.function != 'C') ) {
	printf("unexpected response when confirming put %c %c\n",
	ctx->msg.channel, ctx->msg.function );

	}
	}
	return(i);
	}

	static long rtcp_ctrl(BIO b, int cmd, long num, void ptr)
	{
	long ret=1;

	switch (cmd)
	{
	case BIO_CTRL_RESET:
	case BIO_CTRL_EOF:
	ret = 1;
	break;
	case BIO_C_SET_FD:
	b->num = num;
	ret = 1;
	break;
	case BIO_CTRL_SET_CLOSE:
	case BIO_CTRL_FLUSH:
	case BIO_CTRL_DUP:
	ret=1;
	break;
	case BIO_CTRL_GET_CLOSE:
	case BIO_CTRL_INFO:
	case BIO_CTRL_GET:
	case BIO_CTRL_PENDING:
	case BIO_CTRL_WPENDING:
	default:
	ret=0;
	break;
	}
	return(ret);
	}

	static int rtcp_gets(BIO bp, char buf, int size)
	{
	return(0);
	}

	static int rtcp_puts(BIO bp, const char str)
	{
	int length;
	if (str == NULL) return(0);
	length = strlen ( str );
	if ( length == 0 ) return (0);
	return rtcp_write ( bp,str, length );
	}