usr/src/cmd/mail/init.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 /*
  27  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33  /*
  34   * All global externs defined in mail.h. All variables are initialized
  35   * here!
  36   *
  37   * !!!!!IF YOU CHANGE (OR ADD) IT HERE, DO IT THERE ALSO !!!!!!!!
  38   *
  39   */
  40 #include        "mail.h"
  41
  42 int             ac;             /* argument list count */
  43 char            **av;           /* argument list */
  44 int             affbytecnt;     /* Total bytes of Auto-Fwd. info in msg. */
  45 int             affcnt;         /* Number of Auto-Fwd.-From: lines in msg. */
  46 int             Daffbytecnt;    /* Hold affbytecnt when sending Delivery Notification */
  47 int             Daffcnt;        /* Hold affcnt when sending Delivery Notification */
  48 char            binmsg[] = "*** Message content is not printable: delete, write or save it to a file ***";
  49 int             changed;        /* > 0 says mailfile has changed */
  50 char            datestring[60]; /* Today's date and time */
  51 char            dbgfname[20];
  52 FILE            *dbgfp;
  53 char            dead[] = "/dead.letter";        /* name of dead.letter */
  54 int             debug;  /* Controls debugging level. 0 ==> no debugging */
  55 int             delflg = 1;
  56 int             dflag = 0;      /* 1 says returning unsendable mail */
  57 char            *errlist[]= {
  58                 "",
  59                 "Unknown system",
  60                 "Problem with mailfile",
  61                 "Space problem",
  62                 "Unable to forward mail, check permissions and group",
  63                 "Syntax error",
  64                 "Forwarding loop",
  65                 "Invalid sender",
  66                 "Invalid recipient",
  67                 "Too many From lines",
  68                 "Invalid permissions",
  69                 "Cannot open mbox",
  70                 "Temporary file problem",
  71                 "Cannot create dead.letter",
  72                 "Unbounded forwarding",
  73                 "Cannot create lock file",
  74                 "No group id of 'mail'",
  75                 "Problem allocating memory",
  76                 "Could not fork",
  77                 "Cannot pipe",
  78                 "Must be owner to modify mailfile",
  79                 "Permission denied by /etc/mail/mailsurr file",
  80                 "Surrogate command failed"
  81 };
  82 int             error = 0;      /* Local value for error */
  83 char            *failsafe;      /* $FAILSAFE */
  84 int             file_size;
  85 int             flge = 0;       /* 1 ==> 'e' option specified */
  86 int             flgE = 0;       /* 1 ==> 'E' option specified */
  87 int             flgF = 0;       /* 1 ==> Installing/Removing  Forwarding */
  88 int             flgf = 0;       /* 1 ==> 'f' option specified */
  89 int             flgh = 0;       /* 1 ==> 'h' option specified */
  90 int             flgm;
  91 int             flgp = 0;       /* 1 ==> 'p' option specified */
  92 int             flgP = 0;       /* 1 ==> 'P' option specified */
  93 int             flgr = 0;       /* 1 ==> 'r' option -- print in fifo order */
  94 int             flgt = 0;       /* 1 ==> 't' option -- add To: line to letter */
  95 int             flgT = 0;       /* 1 ==> 'T' option specified */
  96 int             flgw = 0;       /* 1 ==> 'w' option specified */
  97 int             fnuhdrtype = 0; /* type of first non-UNIX header line */
  98 char            forwmsg[] = " forwarded by %s\n";
  99 char            fromS[1024];    /* stored here by sendmail for sendsurg */
 100 char            fromU[1024];    /* stored here by sendmail for sendsurg */
 101 char            frwlmsg[] = "     %s: Forwarding loop detected in %s's mailfile.\n";
 102 char            frwrd[] = "Forward to ";        /* forwarding sentinel */
 103 char            fwdFrom[1024];
 104 int             goerr = 0;      /* counts parsing errors */
 105 struct group    *grpptr;        /* pointer to struct group */
 106 struct hdrlines hdrlines[H_CONT];
 107 /* Default_display indicates whether to display this header line to the TTY */
 108 /* when in default mode. Can be overridden via 'P' command at ? prompt */
 109 struct hdr      header[] = {
 110                 "",                             FALSE,
 111                 "Auto-Forward-Count:",          FALSE,
 112                 "Auto-Forwarded-From:",         FALSE,
 113                 "Content-Length:",              TRUE,
 114                 "Content-Type:",                FALSE,
 115                 "Date:",                        TRUE,
 116                 "Default-Options:",             FALSE,
 117                 "End-of-Header:",               FALSE,
 118                 "From ",                        TRUE,
 119                 ">From ",                       TRUE,
 120                 "From:",                        TRUE,
 121                 "MIME-Version:",                FALSE,
 122                 "MTS-Message-ID:",              FALSE,
 123                 "Message-Type:",                FALSE,
 124                 "Message-Version:",             FALSE,
 125                 "Message-Service:",             TRUE,
 126                 "Received:",                    FALSE,
 127                 "Report-Version:",              FALSE,
 128                 "Subject:",                     TRUE,
 129                 "To:",                          TRUE,
 130                 ">To:",                         FALSE,
 131                 "Transport-Options:",           FALSE,
 132                 "UA-Content-ID:",               FALSE,
 133
 134                 /*Dummy place holders for H_DAFWDFROM,*/
 135                 /*H_DTCOPY and H_RECEIVED. Should */
 136                 /* match above first...*/
 137                 "Hold-Auto-Forwarded-From:",    FALSE,
 138                 "Hold->To:",                    FALSE,
 139                 "Hold-Received:",               FALSE,
 140                 "Continue:",                    FALSE,
 141                 "Name-Value:",                  FALSE,
 142 };
 143 char            *help[] = {
 144                 "?\t\tprint this help message\n",
 145                 "#\t\tdisplay message number #\n",
 146                 "-\t\tprint previous\n",
 147                 "+\t\tnext (no delete)\n",
 148                 "! cmd\t\texecute cmd\n",
 149                 "<CR>\t\tnext (no delete)\n",
 150                 "a\t\tposition at and read newly arrived mail\n",
 151                 "d [#]\t\tdelete message # (default current message)\n",
 152                 "dp\t\tdelete current message and print the next\n",
 153                 "dq\t\tdelete current message and exit\n",
 154                 "h a\t\tdisplay all headers\n",
 155                 "h d\t\tdisplay headers of letters scheduled for deletion\n",
 156                 "h [#]\t\tdisplay headers around # (default current message)\n",
 157                 "m user  \tmail (and delete) current message to user\n",
 158                 "n\t\tnext (no delete)\n",
 159                 "p\t\tprint (override any warnings of binary content)\n",
 160                 "P\t\toverride default 'brief' mode and display ALL header lines\n",
 161                 "q, ^D\t\tquit\n",
 162                 "r [args]\treply to (and delete) current letter via mail [args]\n",
 163                 "s [files]\tsave (and delete) current message (default mbox)\n",
 164                 "u [#]\t\tundelete message # (default current message)\n",
 165                 "w [files]\tsave (and delete) current message without header\n",
 166                 "x\t\texit without changing mail\n",
 167                 "y [files]\tsave (and delete) current message (default mbox)\n",
 168                 0
 169 };
 170 char            *hmbox;         /* pointer to $HOME/mbox */
 171 char            *hmdead;        /* pointer to $HOME/dead.letter */
 172 char            *home;          /* pointer to $HOME */
 173 time_t          iop;
 174 int             interactive = 0;        /* 1 says user is interactive */
 175 int             ismail = TRUE;          /* default to program=mail */
 176 int             deliverflag = FALSE;    /* -d flag, skip sendmail
 177                                          * deliver directly to mailbox
 178                                          */
 179 int             fromflag = FALSE;   /* -f from_user, set a user
 180                                          * when going into a mailbox
 181                                          */
 182 int             keepdbgfile;
 183 struct let      let[MAXLET];
 184 char            *lettmp;                /* pointer to tmp filename */
 185 char            lfil[MAXFILENAME];
 186 char            line[LSIZE];    /* holds a line of a letter in many places */
 187 char            *mailfile;      /* pointer to mailfile */
 188 char            mailcnfg[] = MAILCNFG;  /* configuration file */
 189 char            maildir[] = MAILDIR;    /* directory for mail files */
 190 gid_t           mailgrp;        /* numeric id of group 'mail' */
 191 char            mailsave[] = SAVEDIR;   /* dir for save files */
 192 char            *mailsurr = MAILSURR;   /* surrogate file name */
 193 FILE            *malf;          /* File pointer for mailfile */
 194 int             maxerr = 0;     /* largest value of error */
 195 char            mbox[] = "/mbox";       /* name for mbox */
 196 uid_t           mf_uid;         /* uid of users mailfile */
 197 gid_t           mf_gid;         /* gid of users mailfile */
 198 char            *msgtype;
 199 char            my_name[1024];  /* user's name who invoked this command */
 200 char            from_user[1024];        /* user's name specified w/ -f when sending */
 201 uid_t           my_euid;        /* user's euid */
 202 gid_t           my_egid;        /* user's egid */
 203 uid_t           my_uid;         /* user's uid */
 204 gid_t           my_gid;         /* user's gid */
 205 int             nlet    = 0;    /* current number of letters in mailfile */
 206 int             onlet   = 0;    /* number of letters in mailfile at startup*/
 207 int             optcnt = 0;     /* Number of options specified */
 208 int             orig_aff = 0;   /* orig. msg. contained H_AFWDFROM lines */
 209 int             orig_dbglvl;    /* argument to -x invocation option */
 210 int             orig_rcv = 0;   /* orig. msg. contained H_RECEIVED lines */
 211 int             orig_tcopy = 0; /* orig. msg. contained H_TCOPY lines */
 212 struct passwd   *pwd;           /* holds passwd entry for this user */
 213 int             pflg = 0;       /* binary message display override flag */
 214 int             Pflg = 0;       /* Selective display flag; 1 ==> display all */
 215 char            *program;       /* program name */
 216 int             rcvbytecnt;     /* Total bytes of Received: info in msg. */
 217 int             Drcvbytecnt;    /* Hold rcvbytecnt when sending Delivery Notification */
 218 char            *recipname;             /* full recipient name/address */
 219 int             replying = 0;   /* 1 says we are replying to a letter */
 220 char            RFC822datestring[60];/* Date in RFC822 date format */
 221 char            Rpath[1024];    /* return path to sender of message */
 222 char            rmtmsg[] =      " remote from %s\n";
 223 char            rtrnmsg[] =     "***** UNDELIVERABLE MAIL sent to %s, being returned by %s *****\n";
 224 int             sav_errno;
 225 char            savefile[MAXFILENAME];  /* holds filename of save file */
 226 void            (*saveint)();
 227 /* Any header line prefixes listed here WILL be displayed in default mode */
 228 /* If it's not here, it won't be shown. Can be overridden via 'P' command */
 229 /* at ? prompt */
 230 char            *seldisp[] = {
 231                 "Cc:",
 232                 "Bcc:",
 233                 "Paper-",
 234                 "Phone:",
 235                 "Message-",
 236                 "Original-",
 237                 "Confirming-",
 238                 "Delivered-",
 239                 "Deliverable-",
 240                 "Not-",
 241                 "En-Route-To:",
 242                 0
 243 };
 244 int             sending;        /* TRUE==>sending mail; FALSE==>printing mail */
 245 char            m_sendto[1024];
 246 jmp_buf         sjbuf;
 247 int             surg_rc = 0;    /* exit code of surrogate command */
 248 int             surr_len = 0;
 249 char            *SURRcmdstr = NULL; /* save in case of FAILURE */
 250 FILE            *SURRerrfile;   /* stderr from surrogate in case of FAILURE */
 251 char            *thissys;       /* Holds name of the system we are on */
 252 FILE            *tmpf;          /* file pointer for temporary files */
 253 mode_t          umsave;
 254 struct          utsname utsn;
 255 static struct utimbuf   utims;
 256 struct utimbuf  *utimep = &utims;
 257 char            uval[1024];
 258
 259 int init()
 260 {
 261         utims.actime = utims.modtime = -1;
 262         return (xsetenv(mailcnfg));
 263 }