usr/src/cmd/lp/lib/printers/okprinter.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.19  */
  32 /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
  33
  34 #include "stdio.h"
  35 #include "sys/types.h"
  36 #include "stdlib.h"
  37 #include <unistd.h>
  38
  39 #include "lp.h"
  40 #include "printers.h"
  41
  42 unsigned long           badprinter      = 0;
  43
  44 static int              okinterface ( char * , PRINTER * );
  45
  46 /**
  47  ** okprinter() - SEE IF PRINTER STRUCTURE IS SOUND
  48  **/
  49
  50 int
  51 okprinter(char *name, PRINTER *prbufp, int isput)
  52 {
  53         badprinter = 0;
  54
  55         /*
  56          * A printer can't be remote and have device, interface,
  57          * fault recovery, or alerts.
  58          */
  59         if (
  60                 prbufp->remote
  61              && (
  62                         prbufp->device
  63                      || prbufp->interface
  64                      || (
  65                                 prbufp->fault_alert.shcmd
  66                              && !STREQU(NAME_NONE, prbufp->fault_alert.shcmd)
  67                         )
  68 #if     defined(CAN_DO_MODULES)
  69 # if    defined(FIXED)
  70 /*
  71  * This needs some work...getprinter() initializes this to "default"
  72  */
  73                      || (
  74                                 !emptylist(prbufp->modules)
  75                              && !STREQU(NAME_NONE, prbufp->modules[0])
  76                         )
  77 # endif
  78 #endif
  79                 )
  80         )
  81                 badprinter |= BAD_REMOTE;
  82
  83         /*
  84          * A local printer must have an interface program. This is
  85          * for historical purposes (it let's someone know where the
  86          * interface program came from) AND is used by "putprinter()"
  87          * to copy the interface program. We must be able to read it.
  88          */
  89         if (!prbufp->remote && isput && !okinterface(name, prbufp))
  90                 badprinter |= BAD_INTERFACE;
  91
  92         /*
  93          * A local printer must have device or dial info.
  94          */
  95         if (!prbufp->remote && !prbufp->device && !prbufp->dial_info)
  96                 badprinter |= BAD_DEVDIAL;
  97
  98         /*
  99          * Fault recovery must be one of three kinds
 100          * (or default).
 101          */
 102         if (
 103                 prbufp->fault_rec
 104              && !STREQU(prbufp->fault_rec, NAME_CONTINUE)
 105              && !STREQU(prbufp->fault_rec, NAME_BEGINNING)
 106              && !STREQU(prbufp->fault_rec, NAME_WAIT)
 107         )
 108                 badprinter |= BAD_FAULT;
 109
 110         /*
 111          * Alert command can't be reserved word.
 112          */
 113         if (
 114                 prbufp->fault_alert.shcmd
 115              && (
 116                 STREQU(prbufp->fault_alert.shcmd, NAME_QUIET)
 117              || STREQU(prbufp->fault_alert.shcmd, NAME_LIST)
 118                 )
 119         )
 120                 badprinter |= BAD_ALERT;
 121
 122         return ((badprinter & ~ignprinter)? 0 : 1);
 123 }
 124
 125 /**
 126  ** okinterface() - CHECK THAT THE INTERFACE PROGRAM IS OKAY
 127  **/
 128
 129 static int
 130 canread(char *path)
 131 {
 132         return ((access(path, R_OK) < 0) ? 0 : 1);
 133 }
 134
 135 static int
 136 okinterface(char *name, PRINTER *prbufp)
 137 {
 138         int                     ret;
 139
 140         register char           *path;
 141
 142
 143         if (prbufp->interface)
 144                 ret = canread(prbufp->interface);
 145
 146         else
 147                 if (!(path = makepath(Lp_A_Interfaces, name, (char *)0)))
 148                         ret = 0;
 149                 else {
 150                         ret = canread(path);
 151                         Free (path);
 152                 }
 153
 154         return (ret);
 155 }