295 lines
8.6 KiB
C
295 lines
8.6 KiB
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$_ definitions */
|
||
|
|
#include <starlet.h>
|
||
|
|
|
||
|
|
typedef unsigned short io_channel;
|
||
|
|
/*************************************************************************/
|
||
|
|
struct io_status { short status, count; long flags; };
|
||
|
|
|
||
|
|
struct rpc_msg { /* Should have member alignment inhibited */
|
||
|
|
char channel; /* 'A'-app data. 'R'-remote client 'G'-global */
|
||
|
|
char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
|
||
|
|
unsigned short int length; /* Amount of data returned or max to return */
|
||
|
|
char data[4092]; /* variable data */
|
||
|
|
};
|
||
|
|
#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)
|
||
|
|
|
||
|
|
struct rpc_ctx {
|
||
|
|
int filled, pos;
|
||
|
|
struct rpc_msg msg;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int rtcp_write(BIO *h,const char *buf,int num);
|
||
|
|
static int rtcp_read(BIO *h,char *buf,int size);
|
||
|
|
static int rtcp_puts(BIO *h,const char *str);
|
||
|
|
static int rtcp_gets(BIO *h,char *str,int size);
|
||
|
|
static long rtcp_ctrl(BIO *h,int cmd,long arg1,void *arg2);
|
||
|
|
static int rtcp_new(BIO *h);
|
||
|
|
static int rtcp_free(BIO *data);
|
||
|
|
|
||
|
|
static BIO_METHOD rtcp_method=
|
||
|
|
{
|
||
|
|
BIO_TYPE_FD,
|
||
|
|
"RTCP",
|
||
|
|
rtcp_write,
|
||
|
|
rtcp_read,
|
||
|
|
rtcp_puts,
|
||
|
|
rtcp_gets,
|
||
|
|
rtcp_ctrl,
|
||
|
|
rtcp_new,
|
||
|
|
rtcp_free,
|
||
|
|
NULL,
|
||
|
|
};
|
||
|
|
|
||
|
|
BIO_METHOD *BIO_s_rtcp(void)
|
||
|
|
{
|
||
|
|
return(&rtcp_method);
|
||
|
|
}
|
||
|
|
/*****************************************************************************/
|
||
|
|
/* Decnet I/O routines.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __DECC
|
||
|
|
#pragma message save
|
||
|
|
#pragma message disable DOLLARID
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int get ( io_channel chan, char *buffer, int maxlen, int *length )
|
||
|
|
{
|
||
|
|
int status;
|
||
|
|
struct io_status iosb;
|
||
|
|
status = sys$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 );
|
||
|
|
}
|
||
|
|
|