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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tlsBIO.c,v 1.2 2000/01/20 01:51:39 aborr Exp $
 *
 * Provides BIO layer to interface openssl to Tcl.
 */

#include "tlsInt.h"

/*




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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tlsBIO.c,v 1.3 2000/07/27 01:58:18 hobbs Exp $
 *
 * Provides BIO layer to interface openssl to Tcl.
 */

#include "tlsInt.h"

/*
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BIO *
BIO_new_tcl(statePtr, flags)
    State *statePtr;
    int flags;
{
    BIO *bio;

    bio = BIO_new(&BioMethods);
    bio->ptr = (char*)statePtr;
    bio->init = 1;
    bio->shutdown = flags;

    return bio;
}

BIO_METHOD *
BIO_s_tcl()
{
    return &BioMethods;
}

static int
BioWrite (bio, buf, bufLen)
    BIO *bio;
    char *buf;
    int bufLen;
{
    Tcl_Channel chan = Tls_GetParent((State*)bio->ptr);
    int ret;

    dprintf(stderr,"\nBioWrite(0x%x, <buf>, %d) [0x%x]", bio, bufLen, chan);




    ret = Tcl_Write( chan, buf, bufLen);


    dprintf(stderr,"\n[0x%x] BioWrite(%d) -> %d [%d.%d]", chan, bufLen, ret,
		Tcl_Eof( chan), Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);

    if (ret == 0) {
	if (!Tcl_Eof( chan)) {
	    BIO_set_retry_write(bio);
	    ret = -1;
	}
    }
    if (BIO_should_read(bio))
	BIO_set_retry_read(bio);

    return ret;
}

static int
BioRead (bio, buf, bufLen)
    BIO *bio;
    char *buf;
    int bufLen;
{
    Tcl_Channel chan = Tls_GetParent((State*)bio->ptr);
    int ret = 0;

    dprintf(stderr,"\nBioRead(0x%x, <buf>, %d) [0x%x]", bio, bufLen, chan);

    if (buf == NULL) return 0;




    ret = Tcl_Read( chan, buf, bufLen);


    dprintf(stderr,"\n[0x%x] BioRead(%d) -> %d [%d.%d]", chan, bufLen, ret,
	Tcl_Eof(chan), Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);

    if (ret == 0) {
	if (!Tcl_Eof( chan)) {
	    BIO_set_retry_read(bio);
	    ret = -1;
	}
    }
    if (BIO_should_write(bio))
	BIO_set_retry_write(bio);

    return ret;
}

static int
BioPuts	(bio, str)
    BIO *bio;
    char *str;
{
    return BioWrite( bio, str, strlen(str));
}

static long
BioCtrl	(bio, cmd, num, ptr)
    BIO *bio;
    int cmd;
    long num;








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BIO *
BIO_new_tcl(statePtr, flags)
    State *statePtr;
    int flags;
{
    BIO *bio;

    bio			= BIO_new(&BioMethods);
    bio->ptr		= (char*)statePtr;
    bio->init		= 1;
    bio->shutdown	= flags;

    return bio;
}

BIO_METHOD *
BIO_s_tcl()
{
    return &BioMethods;
}

static int
BioWrite (bio, buf, bufLen)
    BIO *bio;
    char *buf;
    int bufLen;
{
    Tcl_Channel chan = Tls_GetParent((State*)(bio->ptr));
    int ret;

    dprintf(stderr,"\nBioWrite(0x%x, <buf>, %d) [0x%x]", bio, bufLen, chan);

#ifdef TCL_CHANNEL_VERSION_2
    ret = Tcl_WriteRaw(chan, buf, bufLen);
#else
    ret = Tcl_Write(chan, buf, bufLen);
#endif

    dprintf(stderr,"\n[0x%x] BioWrite(%d) -> %d [%d.%d]", chan, bufLen, ret,
	    Tcl_Eof(chan), Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);

    if (ret == 0) {
	if (!Tcl_Eof(chan)) {
	    BIO_set_retry_write(bio);
	    ret = -1;
	}
    }
    if (BIO_should_read(bio)) {
	BIO_set_retry_read(bio);
    }
    return ret;
}

static int
BioRead (bio, buf, bufLen)
    BIO *bio;
    char *buf;
    int bufLen;
{
    Tcl_Channel chan = Tls_GetParent((State*)bio->ptr);
    int ret = 0;

    dprintf(stderr,"\nBioRead(0x%x, <buf>, %d) [0x%x]", bio, bufLen, chan);

    if (buf == NULL) return 0;

#ifdef TCL_CHANNEL_VERSION_2
    ret = Tcl_ReadRaw(chan, buf, bufLen);
#else
    ret = Tcl_Read(chan, buf, bufLen);
#endif

    dprintf(stderr,"\n[0x%x] BioRead(%d) -> %d [%d.%d]", chan, bufLen, ret,
	    Tcl_Eof(chan), Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);

    if (ret == 0) {
	if (!Tcl_Eof(chan)) {
	    BIO_set_retry_read(bio);
	    ret = -1;
	}
    }
    if (BIO_should_write(bio)) {
	BIO_set_retry_write(bio);
    }
    return ret;
}

static int
BioPuts	(bio, str)
    BIO *bio;
    char *str;
{
    return BioWrite(bio, str, strlen(str));
}

static long
BioCtrl	(bio, cmd, num, ptr)
    BIO *bio;
    int cmd;
    long num;
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	break;
    case BIO_CTRL_INFO:
	ret = 1;
	break;
    case BIO_C_SET_FD:
	BioFree(bio);
	/* Sets State* */
	bio->ptr = *((char **)ptr);
	bio->shutdown = (int)num;
	bio->init = 1;
	break;
    case BIO_C_GET_FD:
	if (bio->init) {
	    ip=(int *)ptr;
	    if (ip != NULL) *ip=bio->num;
		ret=bio->num;


	} else {
	    ret= -1;
	}
	break;
    case BIO_CTRL_GET_CLOSE:
	ret=bio->shutdown;
	break;
    case BIO_CTRL_SET_CLOSE:
	bio->shutdown=(int)num;
	break;
    case BIO_CTRL_EOF:
	dprintf(stderr, "BIO_CTRL_EOF\n");
	ret = Tcl_Eof( chan);
	break;
    case BIO_CTRL_PENDING:
	if (Tcl_InputBuffered(chan))
	    ret = 1;
	else
	    ret = 0;
	dprintf(stderr, "BIO_CTRL_PENDING(%d)\n", ret);
	break;
    case BIO_CTRL_WPENDING:
	ret=0;
	break;
    case BIO_CTRL_DUP:
	break;
    case BIO_CTRL_FLUSH:
	dprintf(stderr, "BIO_CTRL_FLUSH\n");




	if (Tcl_Flush( chan) == TCL_OK)


	    ret=1;
	else
	    ret=-1;

	break;
    default:
	ret=0;
	break;
    }
    return(ret);
}

static int
BioNew	(bio)
    BIO *bio;
{
    bio->init = 0;
    bio->num = 0;
    bio->ptr = NULL;
    bio->flags = 0;

    return 1;
}

static int
BioFree	(bio)
    BIO *bio;
{
    if (bio == NULL)
	return 0;


    if (bio->shutdown) {
	if (bio->init) {
	    /*shutdown(bio->num, 2) */
	    /*closesocket(bio->num) */
	}
	bio->init = 0;
	bio->flags = 0;
	bio->num = 0;
    }
    return 1;
}








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	break;
    case BIO_CTRL_INFO:
	ret = 1;
	break;
    case BIO_C_SET_FD:
	BioFree(bio);
	/* Sets State* */
	bio->ptr	= *((char **)ptr);
	bio->shutdown	= (int)num;
	bio->init	= 1;
	break;
    case BIO_C_GET_FD:
	if (bio->init) {
	    ip = (int *)ptr;
	    if (ip != NULL) {
		*ip = bio->num;
	    }
	    ret = bio->num;
	} else {
	    ret = -1;
	}
	break;
    case BIO_CTRL_GET_CLOSE:
	ret = bio->shutdown;
	break;
    case BIO_CTRL_SET_CLOSE:
	bio->shutdown = (int)num;
	break;
    case BIO_CTRL_EOF:
	dprintf(stderr, "BIO_CTRL_EOF\n");
	ret = Tcl_Eof(chan);
	break;
    case BIO_CTRL_PENDING:
	ret = (Tcl_InputBuffered(chan) ? 1 : 0);



	dprintf(stderr, "BIO_CTRL_PENDING(%d)\n", ret);
	break;
    case BIO_CTRL_WPENDING:
	ret = 0;
	break;
    case BIO_CTRL_DUP:
	break;
    case BIO_CTRL_FLUSH:
	dprintf(stderr, "BIO_CTRL_FLUSH\n");
	if (
#ifdef TCL_CHANNEL_VERSION_2
	    Tcl_WriteRaw(chan, "", 0) >= 0
#else
	    Tcl_Flush(chan) == TCL_OK
#endif
	    ) {
	    ret = 1;
	} else {
	    ret = -1;
	}
	break;
    default:
	ret = 0;
	break;
    }
    return(ret);
}

static int
BioNew	(bio)
    BIO *bio;
{
    bio->init	= 0;
    bio->num	= 0;
    bio->ptr	= NULL;
    bio->flags	= 0;

    return 1;
}

static int
BioFree	(bio)
    BIO *bio;
{
    if (bio == NULL) {
	return 0;
    }

    if (bio->shutdown) {
	if (bio->init) {
	    /*shutdown(bio->num, 2) */
	    /*closesocket(bio->num) */
	}
	bio->init	= 0;
	bio->flags	= 0;
	bio->num	= 0;
    }
    return 1;
}
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