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Second phase of REUSE compliance and header reformat

/*
 *   $Id: ssvn_lock.c,v 1.4 2025/03/09 19:50:47 snw Exp $
 *    ^$LOCK ssvn
 *
 *  
 *   Author: Serena Willis <snw@coherent-logic.com>
 *    Copyright (C) 1998 MUG Deutschland
 *    Copyright (C) 2020, 2025 Coherent Logic Development LLC
 *
 *
 *   This file is part of FreeM.
 *
 *   FreeM is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Affero Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   FreeM is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Affero Public License for more details.
 *
 *   You should have received a copy of the GNU Affero Public License
 *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
 *
 *   $Log: ssvn_lock.c,v $
 *   Revision 1.4  2025/03/09 19:50:47  snw
 *   Second phase of REUSE compliance and header reformat
 *
 *
 * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
 * SPDX-License-Identifier: AGPL-3.0-or-later
 **/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "mpsdef.h"
#include "mref.h"

void ssvn_lock_add(char *key, pid_t owner_job, int count)
{
    register int i;

    char *t_buf;
    char *k_buf;
    char *d_buf;
    freem_ref_t *r;
    
    t_buf = (char *) malloc (STRLEN * sizeof (char));
    NULLPTRCHK(t_buf,"ssvn_lock_add");
    
    k_buf = (char *) malloc (STRLEN * sizeof (char));
    NULLPTRCHK(k_buf,"ssvn_lock_add");

    d_buf = (char *) malloc (STRLEN * sizeof (char));
    NULLPTRCHK(d_buf,"ssvn_lock_add");
    
    r = (freem_ref_t *) malloc (sizeof (freem_ref_t));
    NULLPTRCHK(r,"ssvn_lock_add");

    mref_init (r, MREF_RT_GLOBAL, "");
    internal_to_mref (r, key);
    mref_to_external (r, t_buf);

    //printf ("key = '%s'\r\n", key);
    //printf ("r = '%s'\r\n", t_buf);
    
    for (i = 0; i < strlen (t_buf); i++) {

        if (t_buf[i] == '\001') {
            t_buf[i] = '\0';
            break;
        }

    }
    
    snprintf (k_buf, STRLEN - 1, "^$LOCK\202%s\201", t_buf);
    snprintf (d_buf, STRLEN - 1, "%ld,%d\201\0", (long) owner_job, count);

    symtab_shm (set_sym, k_buf, d_buf);

    free (t_buf);
    free (k_buf);
    free (d_buf);
    free (r);
    
}

void ssvn_lock_remove(char *key)
{
    register int i;

    char *t_buf;
    char *k_buf;
    char *d_buf;
    freem_ref_t *r;
    
    t_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
    NULLPTRCHK(t_buf,"ssvn_lock_add");
    
    k_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
    NULLPTRCHK(k_buf,"ssvn_lock_add");

    d_buf = (char *) malloc (STRLEN * sizeof (freem_ref_t));
    NULLPTRCHK(d_buf,"ssvn_lock_add");
    
    r = (freem_ref_t *) malloc (sizeof (freem_ref_t));
    NULLPTRCHK(r,"ssvn_lock_add");

    mref_init (r, MREF_RT_GLOBAL, "");
    internal_to_mref (r, key);
    mref_to_external (r, t_buf);

    for (i = 0; i < strlen (t_buf); i++) {

        if (t_buf[i] == '\001') {
            t_buf[i] = '\0';
            break;
        }

    }
    
    snprintf (k_buf, STRLEN - 1, "^$LOCK\202%s\201", t_buf);
    snprintf (d_buf, STRLEN - 1, " \201");

    symtab_shm (kill_sym, k_buf, d_buf);
    
}

void ssvn_lock(short action, char *key, char *data)
{

    switch (action) {

        case set_sym:       
        case kill_sym:
            //TODO: remove lock            
            merr_raise (M29);
            return;
            
        default:
            symtab_shm (action, key, data);
            break;

    }
    
    return;
}