varnish-cache/lib/libvarnish/vin.c
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/*-
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 * Copyright (c) 2007-2010 Varnish Software AS
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 * All rights reserved.
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 *
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 * Author: Dag-Erling Smørgrav <des@des.no>
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 *
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 * SPDX-License-Identifier: BSD-2-Clause
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * NB: also used in libvarnishapi
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 */
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "vdef.h"
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#include "vas.h"
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#include "vin.h"
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#include "vsb.h"
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char *
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VIN_n_Arg(const char *n_arg)
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{
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        struct vsb *vsb;
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        char *retval;
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        vsb = VSB_new_auto();
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        AN(vsb);
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        if (n_arg == NULL || n_arg[0] == '\0') {
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                VSB_cat(vsb, VARNISH_STATE_DIR);
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                VSB_cat(vsb, "/varnishd");
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        } else if (n_arg[0] == '/') {
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                VSB_cat(vsb, n_arg);
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        } else {
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                VSB_cat(vsb, VARNISH_STATE_DIR);
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                VSB_cat(vsb, "/");
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                VSB_cat(vsb, n_arg);
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        }
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        AZ(VSB_finish(vsb));
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        retval = strdup(VSB_data(vsb));
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        VSB_destroy(&vsb);
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        return (retval);
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}