libadm/common/pkgnmchk.c

	pkgnmchk.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


/*
 * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.2 */
/*LINTLIBRARY*/

#include <string.h>
#include <ctype.h>
#include <sys/types.h>
#include "libadm.h"

static char *rsvrd[] = {
    "all",
    "install",
    "new",
    NULL
};

#define NMBRK   ".*"
#define WILD1   ".*"
#define WILD2   "*"
#define WILD3   ".name"
#define ABI_NAMELNGTH       9
#define NON_ABI_NAMELNGTH   32

static int abi_namelngth = 0;

static int
valname(char *pkg, int wild, int presvr4flg)
{
    int count, i, n;
    char    *pt;

    /* wild == 1    allow wildcard specification as a name */
    if (wild && (strcmp(pkg, "all") == 0))
        return (0);

    /* check for reserved package names */
    for (i = 0; rsvrd[i]; i++) {
        n = (int)strlen(rsvrd[i]);
        if ((strncmp(pkg, rsvrd[i], n) == 0) &&
            (!pkg[n] || strchr(NMBRK, pkg[n])))
            return (1);
    }

    /*
     * check for valid extensions; we must do this
     * first since we need to look for SVR3 ".name"
     * before we validate the package abbreviation
     */
    if (pt = strpbrk(pkg, NMBRK)) {
        if (presvr4flg && (strcmp(pt, WILD3) == 0))
            return (0); /* SVR3 packages have no validation */
        else if ((strcmp(pt, WILD1) == 0) || (strcmp(pt, WILD2) == 0)) {
            /* wildcard specification */
            if (!wild)
                return (1);
        } else {
            count = 0;
            while (*++pt) {
                count++;
                if (!isalpha((unsigned char)*pt) &&
                    !isdigit((unsigned char)*pt) &&
                    !strpbrk(pt, "-+"))
                    return (-1);
            }
            if (!count || (count > 4))
                return (-1);
        }
    }

    /* check for valid package name */
    count = 0;
    if (!isalnum((unsigned char)*pkg) ||
        (!presvr4flg && !isalpha((unsigned char)*pkg)))
        return (-1);
    while (*pkg && !strchr(NMBRK, *pkg)) {
        if (!isalnum((unsigned char)*pkg) && !strpbrk(pkg, "-+"))
            return (-1);
        count++, pkg++;
    }

    /* Check for ABI package name length */
    if (get_ABI_namelngth() == 1) {
        if (count > ABI_NAMELNGTH)
            return (-1);
    } else if (count > NON_ABI_NAMELNGTH)
            return (-1);

    return (0); /* pkg is valid */
}

/* presvr4flg - check for pre-svr4 package names also ? */
int
pkgnmchk(char *pkg, char *spec, int presvr4flg)
{
    /* pkg is assumed to be non-NULL upon entry */

    /*
     * this routine reacts based on the value passed in spec:
     *  NULL    pkg must be valid and may be a wildcard spec
     *  "all"   pkg must be valid and must be an instance
     *  "x.*"   pkg must be valid and must be an instance of "x"
     *  "x*"    pkg must be valid and must be an instance of "x"
     */

    if (valname(pkg, ((spec == NULL) ? 1 : 0), presvr4flg))
        return (1); /* invalid or reserved name */

    if ((spec == NULL) || (strcmp(spec, "all") == 0))
        return (0);

    while (*pkg == *spec) {
        if ((strcmp(spec, WILD1) == 0) || (strcmp(spec, WILD2) == 0) ||
        (strcmp(spec, WILD3) == 0))
            break; /* wildcard spec, so stop right here */
        else if (*pkg++ == '\0')
            return (0); /* identical match */
        spec++;
    }

    if ((strcmp(spec, WILD1) == 0) || (strcmp(spec, WILD2) == 0) ||
        (strcmp(spec, WILD3) == 0)) {
        if ((pkg[0] == '\0') || (pkg[0] == '.'))
            return (0);
    }
    if ((spec[0] == '\0') && (strcmp(pkg, WILD3) == 0))
        return (0); /* compare pkg.name to pkg */
    return (1);
}

void
set_ABI_namelngth(void)
{
    abi_namelngth = 1;
}

int
get_ABI_namelngth(void)
{
    return (abi_namelngth);
}