usr/src/cmd/mail/ckdlivopts.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 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 /*
  29     NAME
  30         ckdlivopts - check delivery notification options
  31
  32     SYNOPSIS
  33         int ckdlivopts(int tcopy_hdr, int *svopts)
  34
  35     DESCRIPTION
  36         Check if delivery notification requested for message being
  37         processed. Returns specified options as combined from H_DEFOPTS,
  38         H_TROPTS, & H_TCOPY lines.
  39
  40         (Positive notification options)
  41                 001 ==> /delivery requested
  42                 002 ==> /nodelivery requested
  43         (Negative notification options)
  44                 010 ==> /report requested
  45                 020 ==> /return requested
  46                 040 ==> /ignore requested
  47
  48         Combinations are expected, i.e. - 011 ==> /delivery/report
  49         If not specified, the assumed defaults are /nodelivery/return (rc=022)
  50
  51         The options discovered in the header are stored into svopts.
  52  */
  53 #include "mail.h"
  54
  55 static void getopts();
  56 static void mergeopts();
  57
  58 struct dlvopts {
  59         int     deliv;
  60         int     nodeliv;
  61         int     rept;
  62         int     rtrn;
  63         int     ign;
  64 };
  65
  66 int ckdlivopts(tcopy_hdr, svopts)
  67 int     tcopy_hdr;
  68 int     *svopts;
  69 {
  70         static char     pn[] = "ckdlivopts";
  71         struct  hdrs    *hp;
  72         struct dlvopts  toopts, tropts, defopts;
  73         int             rc;
  74
  75         /* already done this once. no need to repeat..... */
  76         if (svopts && *svopts != 0) {
  77                 Dout(pn, 0, "*svopts = o%o\n", *svopts);
  78                 return (*svopts);
  79         }
  80         memset((char *)&defopts, 0, sizeof(struct dlvopts));
  81         if ((hp = hdrlines[H_DEFOPTS].head) != (struct hdrs *)NULL) {
  82                 Dout(pn, 3, "H_DEFOPTS line = '%s'\n", hp->value);
  83                 getopts(hp->value, &defopts);
  84         }
  85         memset((char *)&tropts, 0, sizeof(struct dlvopts));
  86         if ((hp = hdrlines[H_TROPTS].head) != (struct hdrs *)NULL) {
  87                 Dout(pn, 3, "H_TROPTS line = '%s'\n", hp->value);
  88                 getopts(hp->value, &tropts);
  89         }
  90         memset((char *)&toopts, 0, sizeof(struct dlvopts));
  91         if ((hp = hdrlines[tcopy_hdr].head) != (struct hdrs *)NULL) {
  92                 Dout(pn, 3,"H_TCOPY line = '%s'\n", hp->value);
  93                 getopts(hp->value, &toopts);
  94         }
  95         /* Combine options from different header lines. Precedence is */
  96         /* toopts --> tropts --> defopts. Results left in defopts */
  97         mergeopts(&tropts,&defopts);
  98         mergeopts(&toopts,&defopts);
  99
 100         if (defopts.deliv)      rc = DELIVERY;
 101         else                    rc = NODELIVERY;
 102
 103         if (defopts.rtrn)       rc += RETURN;
 104         else if (defopts.rept)  rc += REPORT;
 105         else if (defopts.ign)   rc += IGNORE;
 106         else                    rc += RETURN;
 107
 108         Dout(pn, 0,"returning = o%o\n", rc);
 109         if (svopts)
 110                 *svopts = rc;
 111         return (rc);
 112 }
 113
 114 /*
 115  * Pick transport options off of header line.
 116  * If conflicting options found, use MOST demanding; i.e. - /delivery/return.
 117  */
 118 static void getopts(s, optr)
 119 register char   *s;
 120 register struct dlvopts *optr;
 121 {
 122         register char   *op;
 123
 124         for (op = strchr (s, '/'); op++; op = strchr(op, '/')) {
 125                 if (casncmp(op, "delivery", 7) == 0) {
 126                         optr->deliv = 1;
 127                         optr->nodeliv = 0;
 128                 } else if (casncmp(op, "nodelivery", 10) == 0) {
 129                         if (optr->deliv == 0) {
 130                                 optr->nodeliv = 1;
 131                         }
 132                 } else if (casncmp(op, "report", 6) == 0) {
 133                         optr->ign = 0;
 134                         if (optr->rtrn == 0) {
 135                                 optr->rept = 1;
 136                         }
 137                 } else if (casncmp(op, "return", 6) == 0) {
 138                         optr->rtrn = 1;
 139                         optr->rept = optr->ign = 0;
 140                 } else if (casncmp(op, "ignore", 6) == 0) {
 141                         optr->rept = 0;
 142                         if (optr->rtrn == 0) {
 143                                 optr->ign = 1;
 144                         }
 145                 }
 146         }
 147 }
 148
 149 /*
 150  * Merge options between 2 sets. Higher set has precedence.
 151  * Results left in lower set.
 152  */
 153 static void mergeopts(higher, lower)
 154 register struct dlvopts *higher, *lower;
 155 {
 156         if (higher->deliv == 1) {
 157                 lower->deliv = 1;
 158                 lower->nodeliv = 0;
 159         }
 160         if (higher->nodeliv == 1) {
 161                 lower->nodeliv = 1;
 162                 lower->deliv = 0;
 163         }
 164         if (higher->rept == 1) {
 165                 lower->rept = 1;
 166                 lower->rtrn = lower->ign = 0;
 167         }
 168         if (higher->rtrn == 1) {
 169                 lower->rtrn = 1;
 170                 lower->rept = lower->ign = 0;
 171         }
 172         if (higher->ign == 1) {
 173                 lower->ign = 1;
 174                 lower->rept = lower->rtrn = 0;
 175         }
 176 }