Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/unix/volume22/elm2.3/part24

Text File | 1990-06-07 | 50KB | 1,884 lines

Subject:  v22i082:  ELM mail syste, release 2.3, Part24/26
Newsgroups: comp.sources.unix
Approved: [e-mail]
X-Checksum-Snefru: 4eb49da1 1fd21ca1 8aa2115d 95ac623e

Submitted-by: Syd Weinstein <[e-mail]>
Posting-number: Volume 22, Issue 82
Archive-name: elm2.3/part24

---- Cut Here and unpack ----
#!/bin/sh
# this is part 24 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file utils/answer.c continued
#
CurArch=24
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
     exit 1; fi
( read Scheck
  if test "$Scheck" != $CurArch
  then echo "Please unpack part $Scheck next!"
       exit 1;
  else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file utils/answer.c"
sed 's/^X//' << 'SHAR_EOF' >> utils/answer.c
X  changing the character buffer to an array of character buffers....
X****/
X
X#define MAX_RECURSION        20        /* up to 20 deep recursion */
X
X#undef  NULL
X#define NULL            (char *) 0    /* for this routine only   */
X
Xextern char *strpbrk();
X
Xchar *get_token(string, sepset, depth)
Xchar *string, *sepset;
Xint  depth;
X{
X
X    /** string is the string pointer to break up, sepstr are the
X        list of characters that can break the line up and depth
X        is the current nesting/recursion depth of the call **/
X
X    register char    *p, *q, *r;
X    static char    *savept[MAX_RECURSION];
X
X    /** is there space on the recursion stack? **/
X
X    if (depth >= MAX_RECURSION) {
X     fprintf(stderr,"Error: Get_token calls nested greated than %d deep!\n",
X            MAX_RECURSION);
X     exit(1);
X    }
X
X    /* set up the pointer for the first or subsequent call */
X    p = (string == NULL)? savept[depth]: string;
X
X    if(p == 0)        /* return if no tokens remaining */
X        return(NULL);
X
X    q = p + strspn(p, sepset);    /* skip leading separators */
X
X    if (*q == '\0')        /* return if no tokens remaining */
X        return(NULL);
X
X    if ((r = strpbrk(q, sepset)) == NULL)    /* move past token */
X        savept[depth] = 0;    /* indicate this is last token */
X    else {
X        *r = '\0';
X        savept[depth] = ++r;
X    }
X    return(q);
X}
X
Xchar *strip_parens(string)
Xchar *string;
X{
X    /** Return string with all parenthesized information removed.
X        This is a non-destructive algorithm... **/
X
X    static char  buffer[LONG_STRING];
X    register int depth = 0, buffer_index = 0;
X
X    for (; *string; string++) {
X      if (*string == '(')
X        depth++;
X      else if (*string == ')')
X        depth--;
X      else if (depth == 0)
X        buffer[buffer_index++] = *string;
X    }
X
X    buffer[buffer_index] = '\0';
X
X    return( (char *) buffer);
X}
SHAR_EOF
echo "File utils/answer.c is complete"
chmod 0444 utils/answer.c || echo "restore of utils/answer.c fails"
echo "x - extracting utils/arepdaem.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/arepdaem.c &&
X
Xstatic char rcsid[] = "@(#)$Id: arepdaem.c,v 4.1 90/04/28 22:44:33 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    arepdaem.c,v $
X * Revision 4.1  90/04/28  22:44:33  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** Keep track of mail as it arrives, and respond by sending a 'recording'
X    file to the sender as new mail is received.
X
X    Note: the user program that interacts with this program is the
X    'autoreply' program and that should be consulted for further
X    usage information.
X
X    This program is part of the 'autoreply' system, and is designed
X    to run every hour and check all mailboxes listed in the file
X    "/etc/autoreply.data", where the data is in the form:
X
X    username    replyfile    current-mailfile-size
X
X    To avoid a flood of autoreplies, this program will NOT reply to mail
X    that contains header "X-Mailer: fastmail".  Further, each time the
X    program responds to mail, the 'mailfile size' entry is updated in
X    the file /etc/autoreply.data to allow the system to be brought
X    down and rebooted without any loss of data or duplicate messages.
X
X    This daemon also uses a lock semaphore file, /usr/spool/uucp/LCK..arep,
X    to ensure that more than one copy of itself is never running.  For this
X    reason, it is recommended that this daemon be started up each morning
X    from cron, since it will either start since it's needed or simply see
X    that the file is there and disappear.
X
X    Since this particular program is the main daemon answering any
X    number of different users, it must be run with uid root.
X**/
X
X#include <stdio.h>
X#include "defs.h"
X
X#ifdef BSD
X# include <sys/time.h>
X#else
X# include <time.h>
X#endif
X
X#include <sys/types.h>
X#include <sys/stat.h>
X#include <signal.h>
X#include <fcntl.h>
X#include <errno.h>
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define arep_lock_file    "LCK..arep"
X
X#define autoreply_file    "/etc/autoreply.data"
X
X#define logfile        "/etc/autoreply.log"    /* first choice   */
X#define logfile2    "/tmp/autoreply.log"    /* second choice  */
X
X#define BEGINNING    0        /* see fseek(3S) for info */
X#define SLEEP_TIME    3600        /* run once an hour       */
X#define MAX_PEOPLE    20        /* max number in program  */
X
X#define EXISTS        00        /* lock file exists??     */
X
X#define remove_return(s)    if (strlen(s) > 0) { \
X                      if (s[strlen(s)-1] == '\n') \
X                    s[strlen(s)-1] = '\0'; \
X                        }
X
Xstruct replyrec {
X    char     username[NLEN];        /* login name of user */
X    char    mailfile[SLEN];        /* name of mail file  */
X    char    replyfile[SLEN];    /* name of reply file */
X    long    mailsize;        /* mail file size     */
X    int     in_list;        /* for new replies    */
X      } reply_table[MAX_PEOPLE];
X
XFILE  *logfd;                /* logfile (log action)   */
Xlong  autoreply_size = 0L;        /* size of autoreply file */
Xint   active = 0;            /* # of people 'enrolled' */
X
XFILE  *open_logfile();            /* forward declaration    */
X
Xlong  bytes();                /*       ditto           */
X
X#ifdef VOIDSIG
Xvoid    term_signal();
X#else
Xint    term_signal();
X#endif
X
Xmain()
X{
X    long size;
X    int  person, data_changed;
X
X    if (fork()) exit(0);
X
X    if (! lock())
X      exit(0);    /* already running! */
X
X    signal(SIGTERM, term_signal);     /* Terminate signal         */
X
X/*
X *    note the usage of the BSD style setpgrp wont hurt
X *    system V as its calling sequence is no arguments.
X *    The idea is to disassociate from the terminal to
X *    prevent signals.
X */
X    person = getpid();
X    setpgrp(person, person);
X
X    while (1) {
X
X      logfd = open_logfile();    /* open the log */
X
X      /* 1. check to see if autoreply table has changed.. */
X
X      if ((size = bytes(autoreply_file)) != autoreply_size) {
X        read_autoreply_file();
X        autoreply_size = size;
X      }
X
X      /* 2. now for each active person... */
X
X      data_changed = 0;
X
X      for (person = 0; person < active; person++) {
X        if ((size = bytes(reply_table[person].mailfile)) !=
X        reply_table[person].mailsize) {
X          if (size > reply_table[person].mailsize)
X            read_newmail(person);
X          /* else mail removed - resync */
X          reply_table[person].mailsize = size;
X          data_changed++;
X        }
X      }
X
X      /* 3. if data changed, update autoreply file */
X
X      if (data_changed)
X        update_autoreply_file();
X
X      close_logfile();        /* close the logfile again */
X
X      /* 4. Go to sleep...  */
X
X      sleep(SLEEP_TIME);
X    }
X}
X
Xint
Xread_autoreply_file()
X{
X    /** We're here because the autoreply file has changed size!!  It
X        could either be because someone has been added or because
X        someone has been removed...since the list will always be in
X        order (nice, eh?) we should have a pretty easy time of it...
X    **/
X
X    FILE *file;
X    char username[SLEN],     replyfile[SLEN];
X    int  person;
X     long size;
X
X    log("Autoreply data file has changed!  Reading...");
X
X/*
X * clear old entries prior to reread
X */
X    for (person = 0; person < active; person++)
X      reply_table[person].in_list = 0;
X
X    if ((file = fopen(autoreply_file,"r")) == NULL) {
X      log("No-one is using autoreply...");
X    } else {
X      while (fscanf(file, "%s %s %dl", username, replyfile, &size) != EOF) {
X        /* check to see if this person is already in the list */
X        if ((person = in_list(username)) != -1) {
X          reply_table[person].in_list = 1;
X          reply_table[person].mailsize = size;     /* sync */
X        }
X        else {     /* if not, add them */
X          if (active == MAX_PEOPLE) {
X        unlock();
X        exit(log("Couldn't add %s - already at max people!",
X               username));
X          }
X          log("adding %s to the active list", username);
X          strcpy(reply_table[active].username, username);
X          sprintf(reply_table[active].mailfile, "%s%s", mailhome, username);
X          strcpy(reply_table[active].replyfile, replyfile);
X          reply_table[active].mailsize = size;
X          reply_table[active].in_list = 1;    /* obviously! */
X          active++;
X        }
X      }
X      fclose(file);
X    }
X
X    /** now check to see if anyone has been removed... **/
X
X    for (person = 0; person < active; person++)
X      if (reply_table[person].in_list == 0) {
X         log("removing %s from the active list",
X          reply_table[person].username);
X        strcpy(reply_table[person].username,
X           reply_table[active-1].username);
X        strcpy(reply_table[person].mailfile,
X           reply_table[active-1].mailfile);
X        strcpy(reply_table[person].replyfile,
X           reply_table[active-1].replyfile);
X        reply_table[person].mailsize = reply_table[active-1].mailsize;
X        active--;
X      }
X}
X
Xupdate_autoreply_file()
X{
X    /** update the entries in the autoreply file... **/
X
X    FILE *file;
X    register int person;
X
X    if ((file = fopen(autoreply_file,"w")) == NULL) {
X          log("Couldn't update autoreply file!");
X      return;
X    }
X
X    for (person = 0; person < active; person++)
X      fprintf(file, "%s %s %ld\n",
X          reply_table[person].username,
X          reply_table[person].replyfile,
X          reply_table[person].mailsize);
X
X    fclose(file);
X
X/*    printf("updated autoreply file\n"); */
X    autoreply_size = bytes(autoreply_file);
X}
X
Xint
Xin_list(name)
Xchar *name;
X{
X    /** search the current active reply list for the specified username.
X        return the index if found, or '-1' if not. **/
X
X    register int iindex;
X
X    for (iindex = 0; iindex < active; iindex++)
X      if (strcmp(name, reply_table[iindex].username) == 0)
X        return(iindex);
X
X    return(-1);
X}
X
Xread_newmail(person)
Xint person;
X{
X    /** Read the new mail for the specified person. **/
X
X
X    FILE *mailfile;
X    char from_whom[SLEN], subject[SLEN];
X    int  sendit;
X
X    log("New mail for %s", reply_table[person].username);
X
X        if ((mailfile = fopen(reply_table[person].mailfile,"r")) == NULL)
X           return(log("can't open mailfile for user %s",
X            reply_table[person].username));
X
X        if (fseek(mailfile, reply_table[person].mailsize, BEGINNING) == -1)
X           return(log("couldn't seek to %ld in mail file!",
X                   reply_table[person].mailsize));
X
X    while (get_return(mailfile, person, from_whom, subject, &sendit) != -1)
X      if (sendit)
X        reply_to_mail(person, from_whom, subject);
X
X    return;
X}
X
Xint
Xget_return(file, person, from, subject, sendit)
XFILE *file;
Xint  person, *sendit;
Xchar *from, *subject;
X{
X    /** Reads the new message and return the from and subject lines.
X        sendit is set to true iff it isn't a machine generated msg
X    **/
X
X    char name1[SLEN], name2[SLEN], lastname[SLEN];
X    char buffer[SLEN], hold_return[NLEN];
X    int done = 0, in_header = 0;
X
X    from[0] = '\0';
X    name1[0] = '\0';
X    name2[0] = '\0';
X    lastname[0] = '\0';
X    *sendit = 1;
X
X    while (! done) {
X
X      if (fgets(buffer, SLEN, file) == NULL)
X    return(-1);
X
X      if (first_word(buffer, "From ")) {
X    in_header++;
X    sscanf(buffer, "%*s %s", hold_return);
X      }
X      else if (in_header) {
X        if (first_word(buffer, ">From")) {
X      sscanf(buffer,"%*s %s %*s %*s %*s %*s %*s %*s %*s %s", name1, name2);
X      add_site(from, name2, lastname);
X        }
X        else if (first_word(buffer,"Subject:")) {
X      remove_return(buffer);
X      strcpy(subject, (char *) (buffer + 8));
X        }
X        else if (first_word(buffer,"X-Mailer: fastmail"))
X      *sendit = 0;
X        else if (strlen(buffer) == 1)
X      done = 1;
X      }
X    }
X
X    if (from[0] == '\0')
X      strcpy(from, hold_return); /* default address! */
X    else
X      add_site(from, name1, lastname);    /* get the user name too! */
X
X    return(0);
X}
X
Xadd_site(buffer, site, lastsite)
Xchar *buffer, *site, *lastsite;
X{
X    /** add site to buffer, unless site is 'uucp', or the same as
X        lastsite.   If not, set lastsite to site.
X    **/
X
X    char local_buffer[SLEN], *strip_parens();
X
X    if (strcmp(site, "uucp") != 0)
X      if (strcmp(site, lastsite) != 0) {
X          if (buffer[0] == '\0')
X            strcpy(buffer, strip_parens(site));         /* first in list! */
X          else {
X            sprintf(local_buffer,"%s!%s", buffer, strip_parens(site));
X            strcpy(buffer, local_buffer);
X          }
X          strcpy(lastsite, strip_parens(site)); /* don't want THIS twice! */
X       }
X}
X
Xremove_first_word(string)
Xchar *string;
X{    /** removes first word of string, ie up to first non-white space
X        following a white space! **/
X
X    register int loc;
X
X    for (loc = 0; string[loc] != ' ' && string[loc] != '\0'; loc++)
X        ;
X
X    while (string[loc] == ' ' || string[loc] == '\t')
X      loc++;
X
X    move_left(string, loc);
X}
X
Xmove_left(string, chars)
Xchar string[];
Xint  chars;
X{
X    /** moves string chars characters to the left DESTRUCTIVELY **/
X
X    register int i;
X
X    chars--; /* index starting at zero! */
X
X    for (i=chars; string[i] != '\0' && string[i] != '\n'; i++)
X      string[i-chars] = string[i];
X
X    string[i-chars] = '\0';
X}
X
Xreply_to_mail(person, from, subject)
Xint   person;
Xchar *from, *subject;
X{
X    /** Respond to the message from the specified person with the
X        specified subject... **/
X
X    char buffer[SLEN];
X
X    if (strlen(subject) == 0)
X      strcpy(subject, "Auto-reply Mail");
X    else if (! first_word(subject,"Auto-reply")) {
X      sprintf(buffer, "Auto-reply to:%s", subject);
X      strcpy(subject, buffer);
X    }
X
X    log("auto-replying to '%s'", from);
X
X    mail(from, subject, reply_table[person].replyfile, person);
X}
X
Xreverse(string)
Xchar *string;
X{
X    /** reverse string... pretty trivial routine, actually! **/
X
X    char buffer[SLEN];
X    register int i, j = 0;
X
X    for (i = strlen(string)-1; i >= 0; i--)
X      buffer[j++] = string[i];
X
X    buffer[j] = '\0';
X
X    strcpy(string, buffer);
X}
X
Xlong
Xbytes(name)
Xchar *name;
X{
X    /** return the number of bytes in the specified file.  This
X        is to check to see if new mail has arrived....  **/
X
X    int ok = 1;
X    extern int errno;    /* system error number! */
X    struct stat buffer;
X
X    if (stat(name, &buffer) != 0)
X      if (errno != 2) {
X       unlock();
X       exit(fprintf(stderr,"Error %d attempting fstat on %s", errno, name));
X      }
X      else
X        ok = 0;
X
X    return(ok ? buffer.st_size : 0);
X}
X
Xmail(to, subject, filename, person)
Xchar *to, *subject, *filename;
Xint   person;
X{
X    /** Mail 'file' to the user from person... **/
X
X    char buffer[VERY_LONG_STRING];
X
X    sprintf(buffer, "%s/fastmail -f '%s [autoreply]' -s '%s' %s %s",
X        BIN, reply_table[person].username,
X            subject, filename, to);
X
X    system(buffer);
X}
X
Xlog(message, arg)
Xchar *message;
Xchar *arg;
X{
X    /** Put log entry into log file.  Use the format:
X          date-time: <message>
X    **/
X
X    struct tm *thetime;
X    long      clock;
X#ifndef    _POSIX_SOURCE
X    struct tm *localtime();
X    long      time();
X#endif
X    char      buffer[SLEN];
X
X    /** first off, get the time and date **/
X
X    clock = time((long *) 0);       /* seconds since ???   */
X    thetime = localtime(&clock);    /* and NOW the time... */
X
X    /** then put the message out! **/
X
X    sprintf(buffer, message, arg);
X
X    fprintf(logfd,"%d/%d-%d:%02d: %s\n",
X        thetime->tm_mon+1, thetime->tm_mday,
X            thetime->tm_hour,  thetime->tm_min,
X            buffer);
X}
X
XFILE *open_logfile()
X{
X    /** open the logfile.  returns a valid file descriptor **/
X
X    FILE *fd;
X
X    if ((fd = fopen(logfile, "a")) == NULL)
X      if ((fd = fopen(logfile2, "a")) == NULL) {
X        unlock();
X        exit(1);    /* give up! */
X      }
X
X    return( (FILE *) fd);
X}
X
Xclose_logfile()
X{
X    /** Close the logfile until needed again. **/
X
X    fclose(logfd);
X}
X
Xchar *strip_parens(string)
Xchar *string;
X{
X    /** Return string with all parenthesized information removed.
X        This is a non-destructive algorithm... **/
X
X    static char  buffer[SLEN];
X    register int depth = 0, buffer_index = 0;
X
X    for (; *string; string++) {
X      if (*string == '(')
X        depth++;
X      else if (*string == ')')
X        depth--;
X      else if (depth == 0)
X        buffer[buffer_index++] = *string;
X    }
X
X    buffer[buffer_index] = '\0';
X
X    return( (char *) buffer);
X}
X
X/*** LOCK and UNLOCK - ensure only one copy of this daemon running at any
X     given time by using a file existance semaphore (wonderful stuff!) ***/
X
Xlock()
X{
X    char lock_name[SLEN];        /* name of lock file  */
X    char pid_buffer[SHORT];
X    int pid, create_fd;
X    extern int errno;    /* system error number! */
X
X    sprintf(lock_name, "%s/%s", LOCK_DIR, arep_lock_file);
X#ifdef PIDCHECK
X      /** first, try to read the lock file, and if possible, check the pid.
X      If we can validate that the pid is no longer active, then remove
X      the lock file.
X       **/
X    if((create_fd=open(lock_name,O_RDONLY)) != -1) {
X      if (read(create_fd, pid_buffer, SHORT) > 0) {
X        pid = atoi(pid_buffer);
X        if (pid) {
X          if (kill(pid, 0)) {
X            close(create_fd);
X            if (unlink(lock_name) != 0) {
X            printf("Error %s (%s)\n\ttrying to unlink file %s (%s)\n",
X            error_name(errno), error_description(errno), lock_name, "lock");
X            return(0);
X            }
X          } else /* kill pid check succeeded */
X            return(0);
X        } else /* pid was zero */
X          return(0);
X      } else /* read failed */
X        return(0);
X    }
X    /* ok, either the open failed or we unlinked it, now recreate it. */
X#else
X    if (access(lock_name, EXISTS) == 0)
X      return(0);    /* file already exists */
X#endif
X
X    if (create_fd=creat(lock_name, O_RDONLY) == -1)
X      return(0);    /* can't create file!!   */
X
X    sprintf(pid_buffer,"%d\n", getpid() );        /* write the current pid to the file */
X    write(create_fd, pid_buffer, strlen(pid_buffer));
X    close(create_fd);                /* no need to keep it open */
X
X    return(1);
X
X}
X
Xunlock()
X{
X    /** remove lock file if it's there! **/
X
X    (void) unlink(arep_lock_file);
X}
X
X#ifdef VOIDSIG
Xvoid    term_signal()
X#else
Xint    term_signal()
X#endif
X{
X    unlock();
X    exit(1);    /* give up! */
X}
SHAR_EOF
chmod 0444 utils/arepdaem.c || echo "restore of utils/arepdaem.c fails"
echo "x - extracting utils/autoreply.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/autoreply.c &&
X
Xstatic char rcsid[] = "@(#)$Id: autoreply.c,v 4.1 90/04/28 22:44:35 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    autoreply.c,v $
X * Revision 4.1  90/04/28  22:44:35  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This is the front-end for the autoreply system, and performs two
X    functions: it either adds the user to the list of people using the
X    autoreply function (starting the daemon if no-one else) or removes
X    a user from the list of people.
X
X    Usage:  autoreply filename
X        autoreply "off"
X    or  autoreply        [to find current status]
X
X**/
X
X#include <stdio.h>
X#include <errno.h>
X#include <sys/types.h>
X#include <sys/stat.h>
X
X#ifdef PWDINSYS
X#  include <sys/pwd.h>
X#else
X#  include <pwd.h>
X#endif
X
X#include "defs.h"
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define  tempdir    "/tmp/arep"        /* file prefix          */
X#define  autoreply_file    "/etc/autoreply.data"   /* autoreply data file  */
X
Xextern   int errno;                /* system error code    */
Xchar     username[NLEN];            /* login name of user   */
X
Xmain(argc, argv)
Xint    argc;
Xchar *argv[];
X{
X    char filename[SLEN];
X    int userid;
X    struct passwd *pass;
X#ifndef    _POSIX_SOURCE
X    struct passwd *getpwuid();
X#endif
X
X    if (argc > 2) {
X      printf("Usage: %s <filename>\tto start autoreply,\n", argv[0]);
X      printf("       %s off\t\tto turn off autoreply\n", argv[0]);
X      printf("   or  %s    \t\tto check current status\n", argv[0]);
X      exit(1);
X    }
X
X    userid  = getuid();
X
X    /*
X     * Get username (logname) field from the password entry for this user id.
X     */
X
X    if((pass = getpwuid(userid)) == NULL) {
X      printf("You have no password entry!");
X      exit(1);
X    }
X    strcpy(username, pass->pw_name);
X
X    if (argc == 1 || strcmp(argv[1], "off") == 0)
X      remove_user((argc == 1));
X    else {
X      strcpy(filename, argv[1]);
X      if (access(filename,READ_ACCESS) != 0) {
X        printf("Error: Can't read file '%s'\n", filename);
X        exit(1);
X      }
X
X      if (filename[0] != '/') /* prefix home directory */
X        sprintf(filename,"%s/%s", getenv("HOME"), argv[1]);
X
X      add_user(filename);
X    }
X
X    exit(0);
X}
X
Xremove_user(stat_only)
Xint stat_only;
X{
X    /** Remove the user from the list of currently active autoreply
X        people.  If 'stat_only' is set, then just list the name of
X        the file being used to autoreply with, if any. **/
X
X    FILE *temp, *repfile;
X    char  tempfile[SLEN], user[SLEN], filename[SLEN];
X    int   c, copied = 0, found = 0;
X    long  filesize, bytes();
X
X    if (! stat_only) {
X      sprintf(tempfile, "%s.%06d", tempdir, getpid());
X
X      if ((temp = fopen(tempfile, "w")) == NULL) {
X        printf("Error: couldn't open tempfile '%s'.  Not removed\n",
X            tempfile);
X        exit(1);
X      }
X    }
X
X    if ((repfile = fopen(autoreply_file, "r")) == NULL) {
X      if (stat_only) {
X        printf("You're not currently autoreplying to mail.\n");
X        exit(0);
X      }
X      printf("No-one is autoreplying to their mail!\n");
X      exit(0);
X    }
X
X    /** copy out of real replyfile... **/
X
X    while (fscanf(repfile, "%s %s %ld", user, filename, &filesize) != EOF)
X
X      if (strcmp(user, username) != 0) {
X        if (! stat_only) {
X          copied++;
X          fprintf(temp, "%s %s %ld\n", user, filename, filesize);
X        }
X      }
X      else {
X        if (stat_only) {
X          printf("You're currently autoreplying to mail with the file %s\n",              filename);
X          exit(0);
X        }
X        found++;
X      }
X
X    fclose(temp);
X    fclose(repfile);
X
X    if (! found) {
X      printf("You're not currently autoreplying to mail%s\n",
X          stat_only? "." : "!");
X      if (! stat_only)
X        unlink(tempfile);
X      exit(! stat_only);
X    }
X
X    /** now copy tempfile back into replyfile **/
X
X    if (copied == 0) {    /* removed the only person! */
X      unlink(autoreply_file);
X    }
X    else {            /* save everyone else   */
X
X      if ((temp = fopen(tempfile,"r")) == NULL) {
X        printf("Error: couldn't reopen tempfile '%s'.  Not removed.\n",
X            tempfile);
X        unlink(tempfile);
X        exit(1);
X      }
X
X      if ((repfile = fopen(autoreply_file, "w")) == NULL) {
X        printf(
X          "Error: couldn't reopen autoreply file for writing!  Not removed.\n");
X        unlink(tempfile);
X        exit(1);
X      }
X
X      while ((c = getc(temp)) != EOF)
X        putc(c, repfile);
X
X      fclose(temp);
X      fclose(repfile);
X
X    }
X    unlink(tempfile);
X
X    if (found > 1)
X      printf("Warning: your username appeared %d times!!   Removed all\n",
X          found);
X    else
X      printf("You've been removed from the autoreply table.\n");
X}
X
Xadd_user(filename)
Xchar *filename;
X{
X    /** add the user to the autoreply file... **/
X
X    FILE *repfile;
X    char  mailfile[SLEN];
X    long  bytes();
X
X    if ((repfile = fopen(autoreply_file, "a")) == NULL) {
X      printf("Error: couldn't open the autoreply file!  Not added\n");
X      exit(1);
X    }
X
X    sprintf(mailfile,"%s/%s", mailhome, username);
X
X    fprintf(repfile,"%s %s %ld\n", username, filename, bytes(mailfile));
X
X    fclose(repfile);
X
X    printf("You've been added to the autoreply system.\n");
X}
X
X
Xlong
Xbytes(name)
Xchar *name;
X{
X    /** return the number of bytes in the specified file.  This
X        is to check to see if new mail has arrived....  **/
X
X    int ok = 1;
X    extern int errno;    /* system error number! */
X    struct stat buffer;
X
X    if (stat(name, &buffer) != 0)
X      if (errno != 2)
X       exit(fprintf(stderr,"Error %d attempting fstat on %s", errno, name));
X      else
X        ok = 0;
X
X    return(ok ? buffer.st_size : 0L);
X}
SHAR_EOF
chmod 0444 utils/autoreply.c || echo "restore of utils/autoreply.c fails"
echo "x - extracting utils/checkalias (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/checkalias &&
X: Use /bin/sh
X# checkalias: part of the Elm mail system
X# @(#)$Id: checkalias,v 4.1 90/04/28 22:44:36 syd Exp $
X
Xif [ "$*" = "" ]; then
X  echo Usage: checkalias alias \[alias ...\] 1>&2
X  exit 1
Xfi
X
Xexec elm -c $*
SHAR_EOF
chmod 0444 utils/checkalias || echo "restore of utils/checkalias fails"
echo "x - extracting utils/expand.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/expand.c &&
X
Xstatic char rcsid[] = "@(#)$Id: expand.c,v 4.1 90/04/28 22:44:37 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    expand.c,v $
X * Revision 4.1  90/04/28  22:44:37  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This is a library routine for the various utilities that allows
X    users to have the standard 'Elm' folder directory nomenclature
X    for all filenames (e.g. '+', '=' or '%').  It should be compiled
X    and then linked in as needed.
X
X**/
X
X#include <stdio.h>
X#include "defs.h"
X
Xchar *expand_define();
X
Xint
Xexpand(filename)
Xchar *filename;
X{
X    /** Expand the filename since the first character is a meta-
X        character that should expand to the "maildir" variable
X        in the users ".elmrc" file...
X
X        Note: this is a brute force way of getting the entry out
X        of the .elmrc file, and isn't recommended for the faint
X        of heart!
X    **/
X
X    FILE *rcfile;
X    char  buffer[SLEN], *expanded_dir, *home, *getenv(), *bufptr;
X    int   foundit = 0;
X
X    bufptr = (char *) buffer;        /* same address */
X
X    if ((home = getenv("HOME")) == NULL) {
X      printf(
X         "Can't expand environment variable $HOME to find .elmrc file!\n");
X      return(NO);
X    }
X
X    sprintf(buffer, "%s/%s", home, elmrcfile);
X
X    if ((rcfile = fopen(buffer, "r")) == NULL) {
X      printf("Can't open your \".elmrc\" file (%s) for reading!\n",
X         buffer);
X      return(NO);
X    }
X
X    while (fgets(buffer, SLEN, rcfile) != NULL && ! foundit) {
X      if (strncmp(buffer, "maildir", 7) == 0 ||
X          strncmp(buffer, "folders", 7) == 0) {
X        while (*bufptr != '=' && *bufptr)
X          bufptr++;
X        bufptr++;            /* skip the equals sign */
X        while (whitespace(*bufptr) && *bufptr)
X          bufptr++;
X        home = bufptr;        /* remember this address */
X
X        while (! whitespace(*bufptr) && *bufptr != '\n')
X          bufptr++;
X
X        *bufptr = '\0';        /* remove trailing space */
X        foundit++;
X      }
X    }
X
X    fclose(rcfile);            /* be nice... */
X
X    if (! foundit) {
X      printf("Couldn't find \"maildir\" in your .elmrc file!\n");
X      return(NO);
X    }
X
X    /** Home now points to the string containing your maildir, with
X        no leading or trailing white space...
X    **/
X
X    if ((expanded_dir = expand_define(home)) == NULL)
X        return(NO);
X
X    sprintf(buffer, "%s%s%s", expanded_dir,
X        (expanded_dir[strlen(expanded_dir)-1] == '/' ||
X        filename[0] == '/') ? "" : "/", (char *) filename+1);
X
X    strcpy(filename, buffer);
X    return(YES);
X}
X
Xchar *expand_define(maildir)
Xchar *maildir;
X{
X    /** This routine expands any occurances of "~" or "$var" in
X        the users definition of their maildir directory out of
X        their .elmrc file.
X
X        Again, another routine not for the weak of heart or staunch
X        of will!
X    **/
X
X    static char buffer[SLEN];    /* static buffer AIEE!! */
X    char   name[SLEN],        /* dynamic buffer!! (?) */
X           *nameptr,           /*  pointer to name??     */
X           *value;              /* char pointer for munging */
X
X    if (*maildir == '~')
X      sprintf(buffer, "%s%s", getenv("HOME"), ++maildir);
X    else if (*maildir == '$') {     /* shell variable */
X
X      /** break it into a single word - the variable name **/
X
X      strcpy(name, (char *) maildir + 1);    /* hurl the '$' */
X      nameptr = (char *) name;
X      while (*nameptr != '/' && *nameptr) nameptr++;
X      *nameptr = '\0';    /* null terminate */
X
X      /** got word "name" for expansion **/
X
X      if ((value = getenv(name)) == NULL) {
X        printf("Couldn't expand shell variable $%s in .elmrc!\n", name);
X        return(NULL);
X      }
X      sprintf(buffer, "%s%s", value, maildir + strlen(name) + 1);
X    }
X    else strcpy(buffer, maildir);
X
X    return( ( char *) buffer);
X}
SHAR_EOF
chmod 0444 utils/expand.c || echo "restore of utils/expand.c fails"
echo "x - extracting utils/fastmail.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/fastmail.c &&
X
Xstatic char rcsid[] = "@(#)$Id: fastmail.c,v 4.1 90/04/28 22:44:39 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    fastmail.c,v $
X * Revision 4.1  90/04/28  22:44:39  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This program is specifically written for group mailing lists and
X    such batch type mail processing.  It does NOT use aliases at all,
X    it does NOT read the /etc/password file to find the From: name
X    of the user and does NOT expand any addresses.  It is meant
X    purely as a front-end for either /bin/mail or /usr/lib/sendmail
X    (according to what is available on the current system).
X
X         **** This program should be used with CAUTION *****
X
X**/
X
X/** The calling sequence for this program is:
X
X    fastmail {args}  filename full-email-address
X
X   where args could be any (or all) of;
X
X       -b bcc-list        (Blind carbon copies to)
X       -c cc-list        (carbon copies to)
X       -d            (debug on)
X       -f from         (from name)
X       -F from-addr        (the actual address to be put in the From: line)
X       -r reply-to-address     (Reply-To:)
X       -s subject         (subject of message)
X**/
X
X#include <stdio.h>
X#include "defs.h"
X#include "patchlevel.h"
X
X#ifdef I_TIME
X#  include <time.h>
X#endif
X#ifdef I_SYSTIME
X#  include <sys/time.h>
X#endif
X#ifdef BSD
X#  include <sys/types.h>
X#  include <sys/timeb.h>
X#endif
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define  binrmail    "/bin/rmail"
X#define  temphome    "/tmp/fastmail."
X
X
Xchar *arpa_dayname[] = { "Sun", "Mon", "Tue", "Wed", "Thu",
X          "Fri", "Sat", "" };
X
Xchar *arpa_monname[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
X          "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", ""};
X
Xchar *get_arpa_date();
X
X#if defined(BSD) && !defined(_POSIX_SOURCE)
X  char *timezone();
X#else
X  extern char *tzname[];
X#endif
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X
X    extern char *optarg;
X    extern int optind;
X    FILE *tempfile;
X    char hostname[NLEN], username[NLEN], from_string[SLEN], subject[SLEN];
X    char filename[SLEN], tempfilename[SLEN], command_buffer[256];
X    char replyto[SLEN], cc_list[SLEN], bcc_list[SLEN], to_list[SLEN];
X    char from_addr[SLEN];
X    int  c, sendmail_available, debug = 0;
X
X    from_string[0] = '\0';
X    subject[0] = '\0';
X    replyto[0] = '\0';
X    cc_list[0] = '\0';
X    bcc_list[0] = '\0';
X    to_list[0] = '\0';
X    from_addr[0] = '\0';
X
X    while ((c = getopt(argc, argv, "b:c:df:F:r:s:")) != EOF) {
X      switch (c) {
X        case 'b' : strcpy(bcc_list, optarg);        break;
X        case 'c' : strcpy(cc_list, optarg);        break;
X        case 'd' : debug++;                    break;
X        case 'f' : strcpy(from_string, optarg);    break;
X        case 'F' : strcpy(from_addr, optarg);        break;
X        case 'r' : strcpy(replyto, optarg);        break;
X        case 's' : strcpy(subject, optarg);        break;
X        case '?' :
X          fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
X          fprintf(stderr, "   where {args} can be;\n");
X          fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n");
X          fprintf(stderr,"\t-f from-name\n\t-F from-addr\n");
X          fprintf(stderr, "\t-r reply-to\n\t-s subject\n\n");
X          exit(1);
X       }
X    }
X
X    if (optind > argc) {
X      fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
X      fprintf(stderr, "   where {args} can be;\n");
X      fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n\t-f from-name\n");
X      fprintf(stderr,"\t-F from-addr\n");
X      fprintf(stderr, "\t-r reply-to\n\t-s subject\n\n");
X      exit(1);
X    }
X
X    strcpy(filename, argv[optind++]);
X
X    if (optind > argc) {
X      fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
X      fprintf(stderr, "   where {args} can be;\n");
X      fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n\t-f from-name\n");
X      fprintf(stderr,"\t-F from-addr\n");
X      fprintf(stderr,"\t-r reply-to\n\t-s subject\n\n");
X      exit(1);
X    }
X
X#ifdef HOSTCOMPILED
X    strncpy(hostname, HOSTNAME, sizeof(hostname));
X#else
X    gethostname(hostname, sizeof(hostname));
X#endif
X
X    strcpy(username, getlogin());
X
X    if (strlen(username) == 0)
X      cuserid(username);
X
X    if (access(filename, READ_ACCESS) == -1) {
X      fprintf(stderr, "Error: can't find file %s!\n", filename);
X      exit(1);
X    }
X
X    sprintf(tempfilename, "%s%d", temphome, getpid());
X
X    if ((tempfile = fopen(tempfilename, "w")) == NULL) {
X      fprintf(stderr, "Couldn't open temp file %s\n", tempfilename);
X      exit(1);
X    }
X
X    /** Subject must appear even if "null" and must be first
X        at top of headers for mail because the
X        pure System V.3 mailer, in its infinite wisdom, now
X        assumes that anything the user sends is part of the
X        message body unless either:
X        1. the "-s" flag is used (although it doesn't seem
X           to be supported on all implementations??)
X        2. the first line is "Subject:".  If so, then it'll
X           read until a blank line and assume all are meant
X           to be headers.
X        So the gory solution here is to move the Subject: line
X        up to the top.  I assume it won't break anyone elses program
X        or anything anyway (besides, RFC-822 specifies that the *order*
X        of headers is irrelevant).  Gahhhhh....
X    **/
X    fprintf(tempfile, "Subject: %s\n", subject);
X
X    if (strlen(from_string) > 0)
X      if (strlen(from_addr) > 0)
X          fprintf(tempfile, "From: %s (%s)\n", from_addr, from_string);
X      else
X          fprintf(tempfile, "From: %s!%s (%s)\n", hostname, username,
X              from_string);
X    else
X      if (strlen(from_addr) > 0)
X        fprintf(tempfile, "From: %s\n", from_addr);
X      else
X        fprintf(tempfile, "From: %s!%s\n", hostname, username);
X
X    fprintf(tempfile, "Date: %s\n", get_arpa_date());
X
X    if (strlen(replyto) > 0)
X      fprintf(tempfile, "Reply-To: %s\n", replyto);
X
X    while (optind < argc)
X          sprintf(to_list, "%s%s%s", to_list, (strlen(to_list) > 0? " ":""),
X          argv[optind++]);
X
X    fprintf(tempfile, "To: %s\n", to_list);
X
X    if (strlen(cc_list) > 0)
X      fprintf(tempfile, "Cc: %s\n", cc_list);
X
X    fprintf(tempfile, "X-Mailer: fastmail [version %s PL%d]\n",
X      VERSION, PATCHLEVEL);
X    fprintf(tempfile, "\n");
X
X    fclose(tempfile);
X
X    /** now we'll cat both files to /bin/rmail or sendmail... **/
X
X    sendmail_available = (access(sendmail, EXECUTE_ACCESS) != -1);
X
X    if (debug)
X        printf("Mailing to %s%s%s%s%s [via %s]\n", to_list,
X            (strlen(cc_list) > 0 ? " ":""), cc_list,
X            (strlen(bcc_list) > 0 ? " ":""), bcc_list,
X            sendmail_available? "sendmail" : "rmail");
X
X    sprintf(command_buffer, "cat %s %s | %s %s %s %s",
X        tempfilename, filename,
X            sendmail_available? sendmail : mailer,
X        to_list, cc_list, bcc_list);
X
X    if (debug)
X      printf("%s\n", command_buffer);
X
X    c = system(command_buffer);
X
X    unlink(tempfilename);
X
X    exit(c != 0);
X}
X
X
Xchar *get_arpa_date()
X{
X    /** returns an ARPA standard date.  The format for the date
X        according to DARPA document RFC-822 is exemplified by;
X
X                     Mon, 12 Aug 85 6:29:08 MST
X
X    **/
X
X    static char buffer[SLEN];    /* static character buffer       */
X    struct tm *the_time;        /* Time structure, see CTIME(3C) */
X    long       junk;        /* time in seconds....         */
X#ifndef    _POSIX_SOURCE
X    struct tm *localtime();
X#endif
X#ifdef BSD
X#  ifndef TZ_MINUTESWEST
X    struct timeb loc_time;    /* of course this is different! */
X#    ifndef _POSIX_SOURCE
X    long time();
X#    endif
X#  else
X    struct  timeval  time_val;
X    struct  timezone time_zone;
X#  endif
X#else
X    long time();
X#endif
X
X#ifdef BSD
X#  ifndef TZ_MINUTESWEST
X    junk = (long) time((long *) 0);
X    ftime(&loc_time);
X#  else
X    gettimeofday(&time_val, &time_zone);
X    junk = time_val.tv_sec;
X#  endif
X#else
X    junk = time(0);    /* this must be here for it to work! */
X#endif
X    the_time = localtime(&junk);
X
X    sprintf(buffer, "%s, %d %s %d %d:%02d:%02d %s",
X      arpa_dayname[the_time->tm_wday],
X      the_time->tm_mday % 32,
X      arpa_monname[the_time->tm_mon],
X      the_time->tm_year % 100,
X      the_time->tm_hour % 24,
X      the_time->tm_min  % 61,
X      the_time->tm_sec  % 61,
X#if defined(BSD) && !defined(_POSIX_SOURCE)
X#  ifndef TZ_MINUTESWEST
X      timezone(loc_time.time_zone, the_time->tz_isdst));
X#  else
X#   ifdef GOULD_NP1
X      the_time->tm_zone);
X#   else
X      timezone(time_zone.tz_minuteswest, time_zone.tz_dsttime));
X#   endif
X#  endif
X#else
X      tzname[the_time->tm_isdst]);
X#endif
X
X    return( (char *) buffer);
X}
SHAR_EOF
chmod 0444 utils/fastmail.c || echo "restore of utils/fastmail.c fails"
echo "x - extracting utils/from.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/from.c &&
X
Xstatic char rcsid[] = "@(#)$Id: from.c,v 4.1 90/04/28 22:44:41 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    from.c,v $
X * Revision 4.1  90/04/28  22:44:41  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** print out whom each message is from in the pending folder or specified
X    one, including a subject line if available..
X
X**/
X
X#include <stdio.h>
X#include <pwd.h>
X#include "defs.h"
X
Xstatic char ident[] = { WHAT_STRING };
X
X#ifdef MMDF
Xchar username[SLEN] = {0};
X#endif /* MMDF */
X
X#define LINEFEED    (char) 10
X
X#define metachar(c)    (c == '=' || c == '+' || c == '%')
X
XFILE *mailfile;
X
Xint   number = 0,    /* should we number the messages?? */
X      verbose = 0;    /* and should we prepend a header? */
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X    char infile[SLEN], *cp ;
X    int  multiple_files = 0, output_files = 0, c;
X    struct passwd *pass;
X#ifndef    _POSIX_SOURCE
X    struct passwd *getpwuid();
X#endif
X    extern int optind;
X
X    while ((c = getopt(argc, argv, "nv")) != EOF)
X      switch (c) {
X        case (int)'n': number++;        break;
X        case (int)'v': verbose++;    break;
X        case (int)'?': printf("Usage: %s [-n] [-v] {filename | username}\n",
X                 argv[0]);
X                       exit(1);
X      }
X
X    infile[0] = '\0';
X    if (optind == argc) {
X    /*
X     *    determine mail file from environment variable if found,
X     *    else use password entry
X     */
X      if ((cp = getenv("MAIL")) == NULL) {
X        if((pass = getpwuid(getuid())) == NULL) {
X          printf("You have no password entry!");
X          exit(1);
X        }
X        sprintf(infile,"%s%s",mailhome, pass->pw_name);
X      }
X      else
X        strcpy(infile, cp);
X      optind -= 1;    /* ensure one pass through loop */
X    }
X
X#ifdef MMDF
X    if((pass = getpwuid(getuid())) == NULL) {
X      printf("You have no password entry!");
X      exit(1);
X    }
X    strcpy(username,pass->pw_name);
X#endif /* MMDF */
X
X    multiple_files = (argc - optind > 1);
X
X    while (optind < argc) {
X
X      if (multiple_files) {
X        strcpy(infile, argv[optind]);
X        printf("%s%s: \n", output_files++ > 0 ? "\n":"", infile);
X      }
X      else if (infile[0] == '\0')
X        strcpy(infile, argv[optind]);
X
X      if (metachar(infile[0])) {
X        if (expand(infile) == 0) {
X           fprintf(stderr, "%s: couldn't expand filename %s!\n",
X               argv[0], infile);
X           exit(1);
X        }
X      }
X
X      if ((mailfile = fopen(infile,"r")) == NULL) {
X        if (optind+1 == argc)
X          printf("No mail.\n");
X        else {
X          if (infile[0] == '/')
X            printf("Couldn't open folder \"%s\".\n", infile);
X          else {
X            sprintf(infile,"%s%s", mailhome, argv[optind]);
X            if ((mailfile = fopen(infile,"r")) == NULL)
X              printf("Couldn't open folders \"%s\" or \"%s\".\n",
X             argv[optind], infile);
X            else {
X          if (read_headers()==0)
X                printf("No messages in that folder!\n");
X              fclose(mailfile);
X        }
X          }
X        }
X      } else {
X        if (read_headers(optind+1 == argc)==0)
X          if (optind+1 == argc)
X            printf("No mail\n");
X          else
X            printf("No messages in that folder!\n");
X        fclose(mailfile);
X      }
X
X      optind++;
X    }
X    exit(0);
X}
X
Xint
Xread_headers(user_mailbox)
Xint user_mailbox;
X{
X    /** Read the headers, output as found.  User-Mailbox is to guarantee
X        that we get a reasonably sensible message from the '-v' option
X     **/
X
X    char buffer[SLEN], from_whom[SLEN], subject[SLEN];
X    register int in_header = 0, count = 0;
X#ifdef MMDF
X    int newheader = 0;
X#endif /* MMDF */
X
X    while (fgets(buffer, SLEN, mailfile) != NULL) {
X      if (index(buffer, '\n') == NULL && !feof(mailfile)) {
X        int c;
X        while ((c = getc(mailfile)) != EOF && c != '\n')
X          ; /* keep reading */
X      }
X
X#ifdef MMDF
X          if (strcmp(buffer, MSG_SEPERATOR) == 0) {
X        newheader = !newheader;
X        if (newheader) {
X          subject[0] = '\0';
X          in_header = 1;
X        }
X      }
X#else
X      if (first_word(buffer,"From ")
X       && real_from(buffer, from_whom)) {
X        subject[0] = '\0';
X        in_header = 1;
X      }
X#endif /* MMDF */
X      else if (in_header) {
X#ifdef MMDF
X        if (first_word(buffer,"From "))
X          real_from(buffer, from_whom);
X#endif /* MMDF */
X        if (first_word(buffer,">From "))
X          forwarded(buffer, from_whom); /* return address */
X        else if (first_word(buffer,"Subject:") ||
X             first_word(buffer,"Re:")) {
X          if (subject[0] == '\0') {
X            remove_first_word(buffer);
X        strcpy(subject, buffer);
X          }
X        }
X        else if (first_word(buffer,"From:") ||
X            first_word(buffer, ">From:"))
X          parse_arpa_from(buffer, from_whom);
X        else if (buffer[0] == LINEFEED) {
X          if (verbose && count == 0)
X            printf("%s contains the following messages:\n\n",
X            user_mailbox?"Your mailbox" : "Folder");
X#ifdef MMDF
X          if (*from_whom == '\0')
X                strcpy(from_whom,username);
X#endif /* MMDF */
X          ++count;
X          show_header(count, from_whom, subject);
X          in_header = 0;
X        }
X      }
X    }
X    return(count);
X}
X
Xint
Xreal_from(buffer, who)
Xchar *buffer, *who;
X{
X    /***** returns true iff 's' has the seven 'from' fields,
X           initializing the who to the sender *****/
X
X    char junk[SLEN];
X
X    junk[0] = '\0';
X    sscanf(buffer, "%*s %s %*s %*s %*s %*s %s",
X                who, junk);
X    return(junk[0] != '\0');
X}
X
Xforwarded(buffer, who)
Xchar *buffer, *who;
X{
X    /** change 'from' and date fields to reflect the ORIGINATOR of
X        the message by iteratively parsing the >From fields... **/
X
X    char machine[SLEN], buff[SLEN], holding_from[SLEN];
X
X    machine[0] = '\0';
X    holding_from[0] = '\0';
X    sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %*s %s",
X                holding_from, machine);
X
X    if(machine[0] == '\0')    /* try for address with timezone in date */
X    sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %s",
X                holding_from, machine);
X
X    if (machine[0] == '\0') /* try for srm address */
X      sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %s",
X                holding_from, machine);
X
X    if (machine[0] == '\0')
X      sprintf(buff, holding_from[0] ? holding_from : "anonymous");
X    else
X      sprintf(buff,"%s!%s", machine, holding_from);
X
X    strncpy(who, buff, SLEN);
X}
X
Xremove_first_word(string)
Xchar *string;
X{    /** removes first word of string, ie up to first non-white space
X        following a white space! **/
X
X    register int loc;
X
X    for (loc = 0; string[loc] != ' ' && string[loc] != '\0'; loc++)
X        ;
X
X    while (string[loc] == ' ' || string[loc] == '\t')
X      loc++;
X
X    move_left(string, loc);
X}
X
Xmove_left(string, chars)
Xchar string[];
Xint  chars;
X{
X    /** moves string chars characters to the left DESTRUCTIVELY **/
X
X    register int i;
X
X    chars--; /* index starting at zero! */
X
X    for (i=chars; string[i] != '\0' && string[i] != '\n'; i++)
X      string[i-chars] = string[i];
X
X    string[i-chars] = '\0';
X}
X
Xshow_header(count, from, subject)
Xint  count;
Xchar *from, *subject;
X{
X    /** output header in clean format, including abbreviation
X        of return address if more than one machine name is
X        contained within it! **/
X
X    char buffer[SLEN];
X    int  loc, i=0, exc=0, len;
X
X#ifndef INTERNET
X    char *p;
X
X    if (chloc(from,'!') != -1 && chloc(from,'@') > 0) {
X      for (p=from;*p != '@'; p++) ;
X      *p = '\0';
X    }
X#endif
X
X    loc = strlen(from);
X
X    while (exc < 2 && loc > 0)
X      if (from[--loc] == '!')
X        exc++;
X
X    if (exc == 2) { /* lots of machine names!  Get last one */
X      loc++;
X      len = strlen(from);
X      while (loc < len && loc < SLEN)
X        buffer[i++] = from[loc++];
X      buffer[i] = '\0';
X      if (number)
X        printf("%3d: %-20s  %s\n", count, buffer, subject);
X      else
X        printf("%-20s  %s\n", buffer, subject);
X    }
X    else
X      if (number)
X        printf("%3d: %-20s  %s\n", count, from, subject);
X      else
X        printf("%-20s  %s\n", from, subject);
X}
X
Xparse_arpa_from(buffer, newfrom)
Xchar *buffer, *newfrom;
X{
X    /** try to parse the 'From:' line given... It can be in one of
X        two formats:
X        From: Dave Taylor <hpcnou!dat>
X        or  From: hpcnou!dat (Dave Taylor)
X        Change 'newfrom' ONLY if sucessfully parsed this entry and
X        the resulting name is non-null!
X    **/
X
X    char temp_buffer[SLEN], *temp;
X    register int i, j = 0, in_parens;
X
X    temp = (char *) temp_buffer;
X    temp[0] = '\0';
X
X    no_ret(buffer);        /* blow away '\n' char! */
X
X    if (lastch(buffer) == '>') {
X      for (i=strlen("From: "); buffer[i] != '\0' && buffer[i] != '<' &&
X           buffer[i] != '('; i++)
X        temp[j++] = buffer[i];
X      temp[j] = '\0';
X    }
X    else if (lastch(buffer) == ')') {
X      in_parens = 1;
X      for (i=strlen(buffer)-2; buffer[i] != '\0' && buffer[i] != '<'; i--) {
X        switch(buffer[i]) {
X        case ')':    in_parens++;
X            break;
X        case '(':    in_parens--;
X            break;
X        }
X        if(!in_parens) break;
X        temp[j++] = buffer[i];
X      }
X      temp[j] = '\0';
X      reverse(temp);
X    }
X
X/* this stuff copied from src/addr_util.c */
X#ifdef USE_EMBEDDED_ADDRESSES
X
X    /** if we have a null string at this point, we must just have a
X        From: line that contains an address only.  At this point we
X        can have one of a few possibilities...
X
X        From: address
X        From: <address>
X        From: address ()
X    **/
X
X    if (strlen(temp) == 0) {
X      if (lastch(buffer) != '>') {
X        for (i=strlen("From:");buffer[i] != '\0' && buffer[i] != '('; i++)
X          temp[j++] = buffer[i];
X        temp[j] = '\0';
X      }
X      else {    /* get outta '<>' pair, please! */
X        for (i=strlen(buffer)-2;buffer[i] != '<' && buffer[i] != ':';i--)
X          temp[j++] = buffer[i];
X        temp[j] = '\0';
X        reverse(temp);
X      }
X    }
X#endif
X
X    if (strlen(temp) > 0) {        /* mess with buffer... */
X
X      /* remove leading spaces... */
X
X      while (whitespace(temp[0]))
X        temp = (char *) (temp + 1);        /* increment address! */
X
X      /* remove trailing spaces... */
X
X      i = strlen(temp) - 1;
X
X      while (whitespace(temp[i]))
X       temp[i--] = '\0';
X
X      /* remove surrounding paired quotation marks */
X      if((temp[i] == '"') & (*temp == '"')) {
SHAR_EOF
echo "End of part 24"
echo "File utils/from.c is continued in part 25"
echo "25" > s2_seq_.tmp
exit 0

"File utils/answer.c is continued in part 24"
echo "24" > s2_seq_.tmp
exit 0

exit 0 # Just in case...