usr/src/cmd/mail/goback.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  * Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32
  33 #include "mail.h"
  34 /*
  35         This routine returns undeliverable mail as well as handles
  36         replying to letters
  37 */
  38 void
  39 goback(letnum)
  40 int     letnum;
  41 {
  42         static char pn[] = "goback";
  43         int     i, w;
  44         char    buf[1024], *cp, work[1024], wuser[1024];
  45
  46         /*
  47          * If dflag already == 1, then been here already and
  48          * having a problem delivering failure notification.
  49          * Reset dflag to 9 to avoid endless loop.....
  50          */
  51         if (dflag == 1) {
  52                 dflag = 9;
  53                 Dout(pn, 0, "dflag = %d\n", dflag);
  54                 if (!error) {
  55                         error = E_REMOTE;
  56                         Dout(pn, 0, "error = %d\n", error);
  57                 }
  58         }
  59
  60         if (dflag < 2) {
  61                 work[0] = '\0';
  62                 wuser[0] = '\0';
  63                 fclose(tmpf);
  64                 if (!replying) {
  65                         dflag = 1;
  66                         Dout(pn, 0, "dflag = 1\n");
  67                         if ((debug > 0) && (keepdbgfile == 0)) {
  68                                 keepdbgfile++;
  69                         }
  70                         if (ckdlivopts(H_TCOPY, (int *)0) & IGNORE) {
  71                                 goto skipsend;
  72                         }
  73                 }
  74                 tmpf = doopen(lettmp, "r+", E_TMP);
  75                 if (replying) {
  76                         fseek(tmpf, let[letnum].adr, 0);
  77                 }
  78                 for (fgets(line, LSIZE, tmpf);
  79                 strncmp(line, header[H_FROM].tag, strlen(header[H_FROM].tag))
  80                     == SAME ||
  81                     strncmp(line, header[H_FROM1].tag,
  82                         strlen(header[H_FROM1].tag)) == SAME; ) {
  83                         if ((i = substr(line, "remote from")) != -1) {
  84                                 for (i = 0, cp = strrchr(line, ' ') + 1;
  85                                         *cp != '\n';
  86                                         cp++) {
  87                                         buf[i++] = *cp;
  88                                 }
  89                                 buf[i++] = '!';
  90                                 buf[i] = '\0';
  91                                 strcat(work, buf);
  92                                 if (line[0] == '>') {
  93                                         i = 6;
  94                                 } else {
  95                                         i = 5;
  96                                 }
  97                                 for (w = i; line[w] != ' '; w++) {
  98                                         wuser[w-i] = line[w];
  99                                 }
 100                                 wuser[w-i] = '\0';
 101                         } else if ((i = substr(line, "forwarded by")) == -1) {
 102                                 if (line[0] == '>') {
 103                                         break;
 104                                 } else {
 105                                         i = 5;
 106                                 }
 107                                 for (w = i; line[w] != ' '; w++) {
 108                                         wuser[w-i] = line[w];
 109                                 }
 110                                 wuser[w-i] = '\0';
 111                         } else if ((i = substr(line, "forwarded by")) > -1) {
 112                                 break;
 113                         }
 114                         fgets(line, LSIZE, tmpf);
 115                 }
 116                 strcat(work, wuser);
 117                 fclose(tmpf);
 118                 tmpf = doopen(lettmp, "r+", E_TMP);
 119                 if (work[0] != '\0') {
 120                         reciplist list;
 121                         if (replying) {
 122                                 (void) snprintf(buf, sizeof (buf),
 123                                     "mail %s %s", m_sendto, work);
 124                                 printf("%s\n", buf);
 125                                 systm(buf);
 126                                 return;
 127                         }
 128                         if (interactive) {
 129                                 (void) strlcpy(work, my_name, sizeof (work));
 130                         }
 131                         fprintf(stderr, "%s: Return to %s\n", program, work);
 132                         /* Put header info from message aside so it won't */
 133                         /* get confused with the Delivery Notification info */
 134                         Daffbytecnt = affbytecnt; affbytecnt = 0;
 135                         Daffcnt = affcnt; affcnt = 0;
 136                         Drcvbytecnt = rcvbytecnt; rcvbytecnt = 0;
 137
 138                         hdrlines[H_DAFWDFROM].head = hdrlines[H_AFWDFROM].head;
 139                         hdrlines[H_DAFWDFROM].tail = hdrlines[H_AFWDFROM].tail;
 140                         hdrlines[H_AFWDFROM].head = (struct hdrs *)NULL;
 141                         hdrlines[H_AFWDFROM].tail = (struct hdrs *)NULL;
 142                         hdrlines[H_DRECEIVED].head = hdrlines[H_RECEIVED].head;
 143                         hdrlines[H_DRECEIVED].tail = hdrlines[H_RECEIVED].tail;
 144                         hdrlines[H_RECEIVED].head = (struct hdrs *)NULL;
 145                         hdrlines[H_RECEIVED].tail = (struct hdrs *)NULL;
 146                         hdrlines[H_DTCOPY].head = hdrlines[H_TCOPY].head;
 147                         hdrlines[H_DTCOPY].tail = hdrlines[H_TCOPY].tail;
 148                         hdrlines[H_TCOPY].head = (struct hdrs *)NULL;
 149                         hdrlines[H_TCOPY].tail = (struct hdrs *)NULL;
 150
 151                         pushlist(H_TCOPY, HEAD, work, FALSE);
 152
 153                         new_reciplist(&list);
 154                         add_recip(&list, work, FALSE);
 155                         sendlist(&list, 0, 0);
 156                         del_reciplist(&list);
 157                 }
 158         }
 159
 160         skipsend:
 161         if (dflag == 9) {
 162                 fprintf(stderr,
 163                         "%s: Cannot return mail.\n",
 164                         program);
 165                 mkdead();
 166         }
 167
 168         else if (dflag < 2) {
 169                 if (!maxerr && (dflag != 1)) {
 170                         maxerr = error;
 171                         Dout(pn, 0, "maxerr = %d\n", maxerr);
 172                 }
 173                 dflag = 0;
 174                 error = 0;
 175                 Dout(pn, 0, "before return,  dflag = %d, error = %d\n",
 176                         dflag, error);
 177         }
 178 }