[thirdparty/openssl.git] / crypto / bio / bss_rtcp.c

/* 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,char *buf,int num);
static int rtcp_read(BIO *h,char *buf,int size);
static int rtcp_puts(BIO *h,char *str);
static int rtcp_gets(BIO *h,char *str,int size);
static long rtcp_ctrl(BIO *h,int cmd,long arg1,char *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,
	};

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=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 ) 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, 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, char *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, char *str)
{
    int length;
    if (str == NULL) return(0);
    length = strlen ( str );
    if ( length == 0 ) return (0);
    return rtcp_write ( bp,str, length );
}
Commit	Line	Data
d02b48c6	1	/* crypto/bio/bss_rtcp.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	/* Written by David L. Jones <jonesd@kcgl1.eng.ohio-state.edu>
	60	* Date: 22-JUL-1996
7d7d2cbc	61	* Revised: 25-SEP-1997 Update for 0.8.1, BIO_CTRL_SET -> BIO_C_SET_FD
d02b48c6 RE	62	*/
	63	/* VMS */
	64	#include <stdio.h>
	65	#include <stdlib.h>
	66	#include <string.h>
	67	#include <errno.h>
	68	#include "cryptlib.h"
ec577822	69	#include <openssl/bio.h>
d02b48c6 RE	70
d02b48c6 RE	71	#include <iodef.h> /* VMS IO$_ definitions */
7d7d2cbc UM	72	#include <starlet.h>
7d7d2cbc UM	73
d02b48c6 RE	74	typedef unsigned short io_channel;
	75	/*************************************************************************/
	76	struct io_status { short status, count; long flags; };
	77
	78	struct rpc_msg { /* Should have member alignment inhibited */
	79	char channel; /* 'A'-app data. 'R'-remote client 'G'-global */
	80	char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
	81	unsigned short int length; /* Amount of data returned or max to return */
	82	char data[4092]; /* variable data */
	83	};
	84	#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)
	85
	86	struct rpc_ctx {
	87	int filled, pos;
	88	struct rpc_msg msg;
	89	};
	90
	91	static int rtcp_write(BIO h,char buf,int num);
	92	static int rtcp_read(BIO h,char buf,int size);
	93	static int rtcp_puts(BIO h,char str);
	94	static int rtcp_gets(BIO h,char str,int size);
	95	static long rtcp_ctrl(BIO h,int cmd,long arg1,char arg2);
	96	static int rtcp_new(BIO *h);
	97	static int rtcp_free(BIO *data);
	98
	99	static BIO_METHOD rtcp_method=
	100	{
58964a49 RE	101	BIO_TYPE_FD,
58964a49 RE	102	"RTCP",
d02b48c6 RE	103	rtcp_write,
	104	rtcp_read,
	105	rtcp_puts,
	106	rtcp_gets,
	107	rtcp_ctrl,
	108	rtcp_new,
	109	rtcp_free,
	110	};
	111
6b691a5c	112	BIO_METHOD *BIO_s_rtcp(void)
d02b48c6 RE	113	{
	114	return(&rtcp_method);
	115	}
	116	/*****************************************************************************/
	117	/* Decnet I/O routines.
	118	*/
7d7d2cbc UM	119
	120	#ifdef __DECC
	121	#pragma message save
	122	#pragma message disable DOLLARID
	123	#endif
	124
d02b48c6 RE	125	static int get ( io_channel chan, char buffer, int maxlen, int length )
	126	{
	127	int status;
	128	struct io_status iosb;
7d7d2cbc	129	status = sys$qiow ( 0, chan, IO$_READVBLK, &iosb, 0, 0,
d02b48c6 RE	130	buffer, maxlen, 0, 0, 0, 0 );
	131	if ( (status&1) == 1 ) status = iosb.status;
	132	if ( (status&1) == 1 ) *length = iosb.count;
	133	return status;
	134	}
	135
	136	static int put ( io_channel chan, char *buffer, int length )
	137	{
	138	int status;
	139	struct io_status iosb;
7d7d2cbc	140	status = sys$qiow ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,
d02b48c6 RE	141	buffer, length, 0, 0, 0, 0 );
	142	if ( (status&1) == 1 ) status = iosb.status;
	143	return status;
	144	}
7d7d2cbc UM	145
	146	#ifdef __DECC
	147	#pragma message restore
	148	#endif
	149
d02b48c6 RE	150	/***************************************************************************/
d02b48c6 RE	151
6b691a5c	152	static int rtcp_new(BIO *bi)
d02b48c6 RE	153	{
	154	struct rpc_ctx *ctx;
	155	bi->init=1;
	156	bi->num=0;
	157	bi->flags = 0;
	158	bi->ptr=Malloc(sizeof(struct rpc_ctx));
	159	ctx = (struct rpc_ctx *) bi->ptr;
	160	ctx->filled = 0;
	161	ctx->pos = 0;
	162	return(1);
	163	}
	164
6b691a5c	165	static int rtcp_free(BIO *a)
d02b48c6 RE	166	{
	167	if (a == NULL) return(0);
	168	if ( a->ptr ) Free ( a->ptr );
	169	a->ptr = NULL;
	170	return(1);
	171	}
	172
6b691a5c	173	static int rtcp_read(BIO b, char out, int outl)
d02b48c6 RE	174	{
	175	int status, length;
	176	struct rpc_ctx *ctx;
	177	/*
	178	* read data, return existing.
	179	*/
	180	ctx = (struct rpc_ctx *) b->ptr;
	181	if ( ctx->pos < ctx->filled ) {
	182	length = ctx->filled - ctx->pos;
	183	if ( length > outl ) length = outl;
	184	memmove ( out, &ctx->msg.data[ctx->pos], length );
	185	ctx->pos += length;
	186	return length;
	187	}
	188	/*
	189	* Requst more data from R channel.
	190	*/
	191	ctx->msg.channel = 'R';
	192	ctx->msg.function = 'G';
	193	ctx->msg.length = sizeof(ctx->msg.data);
	194	status = put ( b->num, (char *) &ctx->msg, RPC_HDR_SIZE );
	195	if ( (status&1) == 0 ) {
	196	return -1;
	197	}
	198	/*
	199	* Read.
	200	*/
	201	ctx->pos = ctx->filled = 0;
	202	status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
	203	if ( (status&1) == 0 ) length = -1;
	204	if ( ctx->msg.channel != 'R' \|\| ctx->msg.function != 'C' ) {
	205	length = -1;
	206	}
	207	ctx->filled = length - RPC_HDR_SIZE;
	208
	209	if ( ctx->pos < ctx->filled ) {
	210	length = ctx->filled - ctx->pos;
	211	if ( length > outl ) length = outl;
	212	memmove ( out, ctx->msg.data, length );
	213	ctx->pos += length;
	214	return length;
	215	}
	216
	217	return length;
	218	}
	219
6b691a5c	220	static int rtcp_write(BIO b, char in, int inl)
d02b48c6 RE	221	{
	222	int status, i, segment, length;
	223	struct rpc_ctx *ctx;
	224	/*
	225	* Output data, send in chunks no larger that sizeof(ctx->msg.data).
	226	*/
	227	ctx = (struct rpc_ctx *) b->ptr;
	228	for ( i = 0; i < inl; i += segment ) {
	229	segment = inl - i;
	230	if ( segment > sizeof(ctx->msg.data) ) segment = sizeof(ctx->msg.data);
	231	ctx->msg.channel = 'R';
	232	ctx->msg.function = 'P';
	233	ctx->msg.length = segment;
	234	memmove ( ctx->msg.data, &in[i], segment );
	235	status = put ( b->num, (char *) &ctx->msg, segment + RPC_HDR_SIZE );
	236	if ((status&1) == 0 ) { i = -1; break; }
	237
	238	status = get ( b->num, (char *) &ctx->msg, sizeof(ctx->msg), &length );
	239	if ( ((status&1) == 0) \|\| (length < RPC_HDR_SIZE) ) { i = -1; break; }
	240	if ( (ctx->msg.channel != 'R') \|\| (ctx->msg.function != 'C') ) {
	241	printf("unexpected response when confirming put %c %c\n",
	242	ctx->msg.channel, ctx->msg.function );
	243
	244	}
	245	}
	246	return(i);
	247	}
	248
6b691a5c	249	static long rtcp_ctrl(BIO b, int cmd, long num, char ptr)
d02b48c6 RE	250	{
	251	long ret=1;
	252
	253	switch (cmd)
	254	{
	255	case BIO_CTRL_RESET:
	256	case BIO_CTRL_EOF:
	257	ret = 1;
	258	break;
7d7d2cbc	259	case BIO_C_SET_FD:
d02b48c6 RE	260	b->num = num;
	261	ret = 1;
	262	break;
	263	case BIO_CTRL_SET_CLOSE:
	264	case BIO_CTRL_FLUSH:
	265	case BIO_CTRL_DUP:
	266	ret=1;
	267	break;
	268	case BIO_CTRL_GET_CLOSE:
	269	case BIO_CTRL_INFO:
	270	case BIO_CTRL_GET:
	271	case BIO_CTRL_PENDING:
	272	case BIO_CTRL_WPENDING:
	273	default:
	274	ret=0;
	275	break;
	276	}
	277	return(ret);
	278	}
	279
6b691a5c	280	static int rtcp_gets(BIO bp, char buf, int size)
d02b48c6 RE	281	{
	282	return(0);
	283	}
	284
6b691a5c	285	static int rtcp_puts(BIO bp, char str)
d02b48c6 RE	286	{
	287	int length;
	288	if (str == NULL) return(0);
	289	length = strlen ( str );
	290	if ( length == 0 ) return (0);
	291	return rtcp_write ( bp,str, length );
	292	}
	293