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    Length: 4257 (0x10a1)
    Types: TextFile
    Names: »ssaptoken.c«

└─⟦2d1937cfd⟧ Bits:30007241 EUUGD22: P.P 5.0
    └─⟦35176feda⟧ »EurOpenD22/isode/isode-6.tar.Z« 
        └─⟦de7628f85⟧ 
            └─⟦this⟧ »isode-6.0/ssap/ssaptoken.c« 

TextFile

/* ssaptoken.c - SPM: tokens */

#ifndef	lint
static char *rcsid = "$Header: /f/osi/ssap/RCS/ssaptoken.c,v 7.0 89/11/23 22:25:50 mrose Rel $";
#endif

/* 
 * $Header: /f/osi/ssap/RCS/ssaptoken.c,v 7.0 89/11/23 22:25:50 mrose Rel $
 *
 *
 * $Log:	ssaptoken.c,v $
 * Revision 7.0  89/11/23  22:25:50  mrose
 * Release 6.0
 * 
 */

/*
 *				  NOTICE
 *
 *    Acquisition, use, and distribution of this module and related
 *    materials are subject to the restrictions of a license agreement.
 *    Consult the Preface in the User's Manual for the full terms of
 *    this agreement.
 *
 */


/* LINTLIBRARY */

#include <stdio.h>
#include <signal.h>
#include "spkt.h"

/* \f

   S-TOKEN-GIVE.REQUEST */

#define	dotoken(requires,shift,bit,type) \
{ \
    if (tokens & bit) { \
	if (!(sb -> sb_requirements & requires)) \
	    return ssaplose (si, SC_OPERATION, NULLCP, \
			"%s token unavailable", type); \
	if (!(sb -> sb_owned & bit)) \
	    return ssaplose (si, SC_OPERATION, NULLCP, \
			"%s token not owned by you", type); \
	settings |= bit; \
    } \
}

/* \f

 */

int	SGTokenRequest (sd, tokens, si)
int	sd;
int	tokens;
struct SSAPindication *si;
{
    SBV	    smask;
    int     result;
    register struct ssapblk *sb;

    missingP (si);

    smask = sigioblock ();

    ssapXsig (sb, sd);

    result = SGTokenRequestAux (sb, tokens, si);

    (void) sigiomask (smask);

    return result;
}

/* \f

 */

static int  SGTokenRequestAux (sb, tokens, si)
register struct ssapblk *sb;
int	tokens;
struct SSAPindication *si;
{
    int     result,
            settings;
    register struct ssapkt *s;

    settings = 0;
    dotokens ();
    if (settings == 0)
	return ssaplose (si, SC_PARAMETER, NULLCP, "no tokens to give");

    if (sb -> sb_flags & SB_GTC)
	return ssaplose (si, SC_OPERATION, NULLCP,
		"give control request in progress");

    if (settings & ST_DAT_TOKEN)
	sb -> sb_flags &= ~(SB_EDACK | SB_ERACK);
    else
	if (sb -> sb_flags & (SB_EDACK | SB_ERACK))
	    return ssaplose (si, SC_OPERATION, "exception in progress");

    if ((s = newspkt (SPDU_GT)) == NULL)
	return ssaplose (si, SC_CONGEST, NULLCP, "out of memory");
    s -> s_mask |= SMASK_SPDU_GT;

    s -> s_mask |= SMASK_GT_TOKEN;
    s -> s_gt_token = settings & 0xff;

    if ((result = spkt2sd (s, sb -> sb_fd, 0, si)) == NOTOK)
	freesblk (sb);
    else
	sb -> sb_owned &= ~s -> s_gt_token;

    freespkt (s);

    return result;
}

#undef	dotoken

/* \f

   S-TOKEN-PLEASE.REQUEST */

#define	dotoken(requires,shift,bit,type) \
{ \
    if (tokens & bit) { \
	if (!(sb -> sb_requirements & requires)) \
	    return ssaplose (si, SC_OPERATION, NULLCP, \
			"%s token unavailable", type); \
	if (sb -> sb_owned & bit)    \
	    return ssaplose (si, SC_OPERATION, NULLCP, \
			"%s token owned by you", type);     \
	settings |= bit; \
    } \
}

/* \f

 */

int	SPTokenRequest (sd, tokens, data, cc, si)
int	sd;
int	tokens,
	cc;
char   *data;
struct SSAPindication *si;
{
    SBV	    smask;
    int     result;
    register struct ssapblk *sb;

    missingP (si);

    smask = sigioblock ();

    ssapPsig (sb, sd);
    toomuchP (sb, data, cc, ST_SIZE, "token");

    result = SPTokenRequestAux (sb, tokens, data, cc, si);

    (void) sigiomask (smask);

    return result;
}

/* \f

 */

static int  SPTokenRequestAux (sb, tokens, data, cc, si)
register struct ssapblk *sb;
int	tokens,
	cc;
char   *data;
struct SSAPindication *si;
{
    int     result,
            settings;
    register struct ssapkt *s;

    settings = 0;
    dotokens ();
    if (settings == 0)
	return ssaplose (si, SC_PARAMETER, NULLCP, "no tokens to ask for");

    if (sb -> sb_flags & SB_GTC)
	return ssaplose (si, SC_OPERATION, NULLCP,
		"give control request in progress");

    if ((s = newspkt (SPDU_PT)) == NULL)
	return ssaplose (si, SC_CONGEST, NULLCP, "out of memory");

    s -> s_mask |= SMASK_PT_TOKEN;
    s -> s_pt_token = settings & 0xff;

    if (cc > 0) {
	s -> s_mask |= SMASK_UDATA_PGI;
	s -> s_udata = data, s -> s_ulen = cc;
    }
    else
	s -> s_udata = NULL, s -> s_ulen = 0;
    if ((result = spkt2sd (s, sb -> sb_fd, 0, si)) == NOTOK)
	freesblk (sb);
    s -> s_mask &= ~SMASK_UDATA_PGI;
    s -> s_udata = NULL, s -> s_ulen = 0;

    freespkt (s);

    return result;
}

#undef	dotoken