v06i036: Elm mail system (elm), Part11/14

sources-request at mirror.UUCP sources-request at mirror.UUCP
Wed Jul 2 01:26:00 AEST 1986


Submitted by: Dave Taylor <pyramid!hplabs!hpldat!taylor>
Mod.sources: Volume 6, Issue 36
Archive-name: elm/Part11

# Continuation of Shell Archive, created by hpldat!taylor

# This is part 11

# To unpack the enclosed files, please use this file as input to the
# Bourne (sh) shell.  This can be most easily done by the command;
#     sh < thisfilename


if [ ! -d src ]
then
  echo creating directory src
  mkdir src
fi

# ---------- file src/options.c ----------

filename="src/options.c"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/options.c...
fi

cat << 'END-OF-FILE' > $filename
/**			options.c			**/

/** This set of routines allows the alteration of a number of paramaters
    in the Elm mailer, including the following;

	printmail	<how to print messages>
	default-shell	<what shell to use for "!" and "|">
	full_username	<your full user name for outgoing mail>
	folder-dir	<folder directory>
	editor		<name of composition editor>
	savefile	<file to save outbound message copies to>
	calendar-file	<where to put calendar entries>
	sort-by		<how to sort mailboxes>
	pager		<how to page messages>

	arrow-cursor	<on or off>
	
	lines-on-screen	<count>
	columns-on-screen <count>

    And others as they seem useful.

    (C) Copyright 1986, Dave Taylor
**/

#include "headers.h"

#undef onoff
#define   onoff(n)	(n == 1? "ON ":"OFF")

options()
{
	/** change options... **/

	char ch;

	display_options();

	do {
	  MoveCursor(LINES-1, strlen("Command: "));

	  ch = tolower(ReadCh());

	  clear_error();	/* remove possible "sorting" message etc... */ 

	  switch (ch) {
	    case 'c' : one_liner(
	    "This is the file where calendar entries from messages are saved.");
		       optionally_enter(calendar_file, 2, 23, FALSE);	break;

	    case 'd' : one_liner(
		"This is the program invoked to display individual messages");
	               optionally_enter(pager, 3, 23, FALSE);
		       break;
	    case 'e' : one_liner(
            "This is the editor that will be used for sending messages, etc.");
		       optionally_enter(editor, 4, 23, FALSE);		break;

	    case 'f' : one_liner(
     "This is the folders directory used when '=' (etc) is used in filenames");
		       optionally_enter(folders, 5, 23, FALSE);		break;

	    case 'm' : one_liner(
			  "How mailboxes are sorted;");
		       change_sort(6,23);				break;

	    case 'o' : one_liner(
        "This is where copies of outbound messages are saved automatically.");
		       optionally_enter(savefile, 7, 23, FALSE);	break;

	    case 'p' : one_liner(
"This is how printouts are generated.  \"%s\" will be replaced by the filename.");
		       optionally_enter(printout, 8, 23, FALSE);	break;

	    case 's' : one_liner(
                      "This is what shell to use for Pipe and System calls...");
		       optionally_enter(shell, 9, 23, FALSE);		break;

	    case 'y' : one_liner(
     "When mail is sent out, this is what your full name will be recorded as.");
		       optionally_enter(full_username, 10, 23, FALSE);	break;

	    case 'a' : one_liner(
       "This defines whether the ELM cursor is an arrow or a highlight bar.");
		       on_or_off(&arrow_cursor, 12, 23); 		break;

	    case 'l' : one_liner(
                      "The number of lines on the screen (alter with care...)");
		       num_enter(&LINES, 14, 23);			break;

	    case 'w' : one_liner(
       "The number of characters that can go on one line (alter with care...)");
		       num_enter(&COLUMNS,15,23);			break;

	    case 'r'      :
	    case ctrl('M'):
	    case ctrl('J'): return;

	    case ctrl('L'): display_options();				break;

	    default: error("Command unknown!");
	  }
	  ClearLine(LINES-3);
	} while (ch != 'r');
}
	
display_options()
{
	/** Display all the available options.. **/
	
	char *sort_name();
	
	ClearScreen();
	Centerline(0,"-- Elm Options Editor --");

#ifdef ENABLE_CALENDAR
	PutLine1(2, 0, "C)alendar file       : %s", calendar_file);
#endif
	PutLine1(3, 0, "D)isplay mail using  : %s", pager);
	PutLine1(4, 0, "E)ditor              : %s", editor);
	PutLine1(5, 0, "F)older directory    : %s", folders);
	PutLine1(6, 0, "M)ailboxes sorted by : %s", sort_name(FALSE));
	PutLine1(7, 0, "O)utbound mail saved : %s", savefile);
	PutLine1(8, 0, "P)rint mail using    : %s", printout);
	PutLine1(9, 0, "S)ystem shell        : %s", shell);
	PutLine1(10,0, "Y)our full name      : %s", full_username);

	PutLine1(12,0, "A)rrow cursor        : %s", onoff(arrow_cursor));
	
	PutLine1(14,0, "L)ines on screen     : %d", LINES);
	PutLine1(15,0, "W)idth of screen     : %d", COLUMNS);

	Centerline(LINES-5,"Select first letter of Option line or R)eturn");

	PutLine1(LINES-1,0,"Command: ");
}

on_or_off(var, x, y)
int *var, x,y;
{
	/** 'var' field at x.y toggles between on and off... **/

	char ch;

     	PutLine0(x, y+6, 
		"(use <space> to toggle, any other key to leave)");

	MoveCursor(x,y+3);	/* at end of value... */

	do {
	  ch = ReadCh();

	  if (ch == SPACE) {
	    *var = ! *var;
	    PutLine0(x,y, onoff(*var));
	  }
	} while (ch == SPACE);

	MoveCursor(x,y+4); 	CleartoEOLN();	/* remove help prompt */
}

num_enter(var, x, y)
int *var, x, y;
{
	/** Enter a new value for the specified number.  For ease, we'll
	    use a string entry routine then convert it internally... **/

	char buffer[NLEN];

	sprintf(buffer,"%d", *var);	/* current value... */

	optionally_enter(buffer, x, y, FALSE);
	
	*var = atoi(buffer);

	PutLine1(x,y, "%d", *var);		CleartoEOLN();
}

change_sort(x, y)
int x,y;
{
	/** change the sorting scheme... **/
	
	int last_sortby,	/* so we know if it changes... */
	    sign = 1;		/* are we reverse sorting??    */
	char ch;		/* character typed in ...      */

	last_sortby = sortby;	/* remember current ordering   */

	PutLine0(x, COLUMNS-29, "(SPACE for next, or R)everse)");
	sort_one_liner(sortby);
	MoveCursor(x, y);

	do {
	  ch = tolower(ReadCh());
	  switch (ch) {
	    case SPACE : if (sortby < 0) { 
	    		   sign = -1; 
	    		   sortby = - sortby; 
	  		 }
			 else sign = 1;		/* insurance! */
	  		 sortby = sign * ((sortby + 1) % (STATUS+1));
			 if (sortby == 0) sortby = sign;  /* snicker */
	  		 PutLine0(x, y, sort_name(TRUE));
			 sort_one_liner(sortby);
	  		 MoveCursor(x, y);
			 break;

	    case 'r'   : sortby = - sortby;
	  		 PutLine0(x, y, sort_name(TRUE));
			 sort_one_liner(sortby);
	  		 MoveCursor(x, y);
	 }
        } while (ch == SPACE || ch == 'r');

	MoveCursor(x, COLUMNS-30);	CleartoEOLN();

	if (sortby != last_sortby) {
	  error("resorting mailbox...");
	  sleep(1);
	  sort_mailbox(message_count);
	}
	ClearLine(LINES-2);		/* clear sort_one_liner()! */
}

one_liner(string)
char *string;
{
	/** A single-line description of the selected item... **/

	Centerline(LINES-3, string);
}

sort_one_liner(sorting_by)
int sorting_by;
{
	/** A one line summary of the particular sorting scheme... **/

	ClearLine(LINES-2);

	switch (sorting_by) {
	  
	  case -SENT_DATE : Centerline(LINES-2,
"This sort will order most-recently-sent to least-recently-sent");	break;
	  case -RECEIVED_DATE : Centerline(LINES-2,
"This sort will order most-recently-received to least-recently-received");
		 	    break;
	  case -SENDER : Centerline(LINES-2,
"This sort will order by sender name, in reverse alphabetical order");	break;
	  case -SIZE   : Centerline(LINES-2,
"This sort will order messages by longest to shortest");		break;
	  case -SUBJECT : Centerline(LINES-2,
"This sort will order by subject, in reverse alphabetical order");	break;
	  case -STATUS  : Centerline(LINES-2,
"This sort will order by reverse status - Deleted through Tagged...");	break;

	  case SENT_DATE : Centerline(LINES-2,
"This sort will order least-recently-sent to most-recently-sent");	break;
	  case RECEIVED_DATE : Centerline(LINES-2,
"This sort will order least-recently-received to most-recently-received");
	                    break;
	  case SENDER : Centerline(LINES-2,
		        "This sort will order by sender name");	break;
	  case SIZE   : Centerline(LINES-2,
		        "This sort will order messages by shortest to longest");
			break;
	  case SUBJECT : Centerline(LINES-2,
            		"This sort will order messages by subject");	break;
	  case STATUS  : Centerline(LINES-2,
"This sort will order by status - Tagged through Deleted...");		break;
	}
}
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 7702 ]
  then
    echo $filename changed - should be 7702 bytes, not $size bytes
  fi

  chmod 666 $filename
fi

# ---------- file src/showmsg.old ----------

filename="src/showmsg.old"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/showmsg.old...
fi

cat << 'END-OF-FILE' > $filename
/** 			showmsg.c			**/

/** This file contains all the routines needed to display the specified
    message.

   These routines (C) Copyright 1986 Dave Taylor 
**/


#include "headers.h"
#include <ctype.h>
#include <errno.h>

#ifdef BSD
#undef tolower
#endif

extern int errno;

char *error_name();

int    memory_lock = FALSE;	/* is it available?? */

int
show_msg(number)
int number;
{
	/*** display number'th message.  Get starting and ending lines
	     of message from headers data structure, then fly through
	     the file, displaying only those lines that are between the
	     two!
		Returns non-zero iff screen was changed
	***/

	dprint0(8, "show_msg called\n");

	if (number > message_count) {
	  error1("Only %d messages!", message_count);
	  return(0);
	}
	else if (number < 1) {
	  error("you can't read THAT message!");
	  return(0);
	}

	clearit(header_table[number-1].status, NEW);   /* it's been read now! */

	memory_lock = (HasMemlock() && scrolling);

	/* some explaination for that last one - We COULD use memory locking
	   to speed up the paging, but the action of "ClearScreen" on a screen
	   with memory lock turned on seems to vary considerably (amazingly so)
	   so it's safer to only allow memory lock to be a viable bit of
	   trickery when dumping text to the screen in scroll mode.
	   Philosophical arguments should be forwarded to Bruce at the 
	   University of Walamazoo, Australia, via ACSNet  *wry chuckle* */

	return(show_message(header_table[number-1].lines, 
	       header_table[number-1].offset,number));
}

int
show_message(lines, file_loc, msgnumber)
int lines, msgnumber;
long file_loc;
{
	/*** Show the indicated range of lines from mailfile
	     for message 'msgnumber' by using 'display'
	     Returns non-zero iff screen was altered.
	***/

	dprint3(9,"show_message(%d,%ld,%d)\n", lines, file_loc, msgnumber);

	if (fseek(mailfile, file_loc, 0) != 0) {
	  dprint2(1,"Error: seek %d bytes into file, errno %s (show_message)\n",
		  file_loc, error_name(errno));
	  error1("ELM failed seeking %d bytes into file (%s)",
		  file_loc, error_name(errno));	
	  return(0);
	}

	/* next read will get 'this' line so must be at end of previous */

	Raw(OFF);
	display(lines, msgnumber);
	Raw(ON);
	if (memory_lock) EndMemlock();	/* turn it off!! */

	return(1);	/* we did it boss! */
}
	

/** these two variables are used iff the variable 'title_message' is
    set, and are buffers for output of message title... **/

static char top_of_screen_left [LONG_STRING], 
     	    top_of_screen_right[LONG_STRING],
	    second_line[SLEN];

int
display(lines, msgnum)
int lines, msgnum;
{
	/** Display specified number of lines from file mailfile.
	    Note: This routine MUST be placed at the first line 
	    of the input file! 
	    Returns the same as the routine above (namely zero or one)
	**/

	char buffer[VERY_LONG_STRING], *full_month();

	int lines_displayed = 0;	
	int lines_on_screen = 0;		/* display    */
	int crypted = 0, gotten_key = 0;	/* encryption */
	int weed_header, weeding_out = 0;	/* weeding    */ 
	int mail_sent;				/* misc use   */

	dprint2(4,"displaying %d lines from message %d\n", 
		lines, msgnum);

	second_line[0] = '\0';		/* must start as NULL */

	if (title_messages) {

	  mail_sent = (strncmp(header_table[msgnum-1].from, "To:", 3) == 0);

	  tail_of(header_table[msgnum-1].from, buffer, FALSE);
	  sprintf(top_of_screen_left, "%s #%d %s %s", 
		   notesfile? "Note" : "Message", msgnum, 
		   mail_sent? "to" : "from", buffer);
	  sprintf(top_of_screen_right," %s %s %s, %d at %s\n\r%s",
		  notesfile? "Posted" : "Mailed",
     		  full_month(header_table[msgnum-1].month), 
		  header_table[msgnum-1].day, 
	          atoi(header_table[msgnum-1].year) + 1900,
	          header_table[msgnum-1].time,
		  filter? "": "\n\r\n\r");

	  if (! mail_sent && matches_weedlist("To:") && filter &&
	      strcmp(header_table[current-1].to,username) != 0 &&
	      strlen(header_table[current-1].to) > 0)
	    sprintf(second_line, "\n\r(message addressed to %s)\n\r\n\r", 
		    header_table[current-1].to);
	
	  /** The test above is: if we didn't originally send the mail
	      (e.g. we're not reading "mail.sent") AND the user is currently
	      weeding out the "To:" line (otherwise they'll get it twice!)
	      AND the user is actually weeding out headers AND the message 
	      wasn't addressed to the user AND the 'to' address is non-zero 
	      (consider what happens when the message doesn't HAVE a "To:" 
	      line...the value is NULL but it doesn't match the username 
	      either.  We don't want to display something ugly like 
	      "(message addressed to )" which will just clutter up the 
	      display!).

	      And you thought programming was EASY!!!!
	  **/
	}

	weed_header = filter;	/* allow us to change it after header */

	ClearScreen();

	if (cursor_control) transmit_functions(OFF);

	while (lines > 0) {

	    if (fgets(buffer, VERY_LONG_STRING, mailfile) == NULL) {
	      if (lines_displayed == 0) {

		/* AUGH!  Why do we get this occasionally???  */

	        dprint0(1,
	   	  "\n\n** Out of Sync!!  EOF with nothing read (display) **\n");
		dprint0(1,"\nLeaving with all temp files intact!\n");
		error("Internal error: out of sync!");
		emergency_exit();

	      }
	      if (scrolling) 
		Write_to_screen("\n\r\n\r\n\r\n\r", 0);
	      PutLine0(LINES-1, 0, "Please press <return> to return: ");
	      (void) tolower(ReadCh());
	      if (cursor_control) transmit_functions(ON);
	      return(TRUE);
	    }

	    if (strlen(buffer) > 0) 
              no_ret(buffer);

	    if (strlen(buffer) == 0) {
	      weed_header = 0;		/* past header! */
	      weeding_out = 0;
	    }

	    lines--;
	    lines_displayed++;

	    if (notesfile) {	/* treat notes differently! */

	      if (filter && (first_word(buffer, NOTES_HEADER) ||
	          first_word(buffer, NOTES_FOOTER)) ) 

	        /*** weed this line out of the display! ***/;

	      else if (show_line(buffer, &lines_on_screen, &lines, 
		       lines_displayed)) {
	          if (cursor_control) transmit_functions(ON);
	          return(TRUE);
	      }
	    }

	    else { /* "normal" message */

	      if (weed_header && matches_weedlist(buffer)) 
	        weeding_out = 1;	 /* aha!  We don't want to see this! */
	      else if (buffer[0] == '[') {
	        if (strcmp(buffer, START_ENCODE)==0)
		  crypted++;
	        else if (strcmp(buffer, END_ENCODE)==0)
	          crypted--;
	        else if (crypted) {
                  encode(buffer);
	          if (show_line(buffer, &lines_on_screen, &lines,
				  lines_displayed)) {
	            if (cursor_control) transmit_functions(ON);
	            return(TRUE);
	          }
	        }
	        else
	          if (show_line(buffer, &lines_on_screen, &lines,
				  lines_displayed)) {
	            if (cursor_control) transmit_functions(ON);
	            return(TRUE);
	          }
	      }
	      else if (crypted) {
	        if (! gotten_key++) getkey(OFF);
	        encode(buffer);
	        if (show_line(buffer, &lines_on_screen, &lines,
				  lines_displayed)) {
	          if (cursor_control) transmit_functions(ON);
	          return(TRUE);
	        }
	      }
	      else if (weeding_out) {
	        weeding_out = (whitespace(buffer[0]));	/* 'n' line weed */
	        if (! weeding_out) 	/* just turned on! */
	          if (show_line(buffer, &lines_on_screen, &lines,
				  lines_displayed)) {
	            if (cursor_control) transmit_functions(ON);
	            return(TRUE);
	          }
	      } 
	      else
	        if (show_line(buffer, &lines_on_screen, &lines,
				  lines_displayed)) {
	          if (cursor_control) transmit_functions(ON);
	          return(TRUE);
	        }
	    }
	  }
	

        if (scrolling) 
	  Write_to_screen("\n\r\n\r\n\r", 0);

	PutLine0(LINES-1, 0, "Please press <return> to return: ");
	Raw(ON);
	tolower(ReadCh());
        if (cursor_control) transmit_functions(ON);
	return(TRUE);
}

int
show_line(buffer, lines_on_screen, total, lines_displayed) 	
char *buffer;
int  *lines_on_screen, *total, lines_displayed;
{
	/** Displays the given line if it can.  if not, it will put the
	    'ole 'space to continue' prompt on the bottom of the screen
	    and wait for either a 'space' or 'return'.  This function
	    returns 0 if '<space>' is hit, or the character pressed.
	**/

	static char overlap [LONG_SLEN];
	       char ch;
	       int  last_line_loc;

	last_line_loc     = *lines_on_screen;	/* one back... */

	*lines_on_screen += ((strlen(buffer) / COLUMNS) + 1);

	if (last_line_loc == 0 && title_messages) {
	  display_title(lines_on_screen);
	  last_line_loc = *lines_on_screen;
	}
		  
	if (*lines_on_screen > LINES-2) {

	  if (*total > 0) {

            if (scrolling) {	

	      if (lines_displayed > LINES+5)  /* are we past screen 1? */
	        Write_to_screen("\n\r\n\r\n\r\n\r", 0);	/* don't ask */
	      
	      PutLine2(LINES, COLUMNS-20, "%d line%s left", 
		     *total, plural(*total));
	      PutLine0(LINES, 0,
		     "Press <space> to continue, <return> to return: ", 0);
	    }
            else {
	      PutLine0(LINES-1, 0, 
		     "Press <space> to continue, <return> to return: ");
	      PutLine2(LINES-1, COLUMNS-20, "%d line%s left", 
		     *total, plural(*total));
	    }
	  }

	  else if (scrolling)
	    Write_to_screen("\n\r\n\rPlease press <return> to return: ");
	  else
	    PutLine0(LINES-1, 0, "Please press <return> to return: ");

	  Raw(ON);
	  ch = tolower(ReadCh());
	  if (ch != ' ' || *total == 0) 
	    return(ch);
	  Raw(OFF);
	  if (scrolling) {
	    MoveCursor(LINES-2, 0);
	    CleartoEOS();
	  }
	  else {
	    ClearScreen();
	  }
	  *lines_on_screen = 1;

	  if (title_messages && ! scrolling) {
	    display_title(lines_on_screen);
	    dprint1(2,"displayed title, lines-on-screen = %d\n",
		   *lines_on_screen);
	  }
		  
	  if (! scrolling) {
	    PutLine1(*lines_on_screen, 0, "%s\n\r", overlap);
	    *lines_on_screen  += ((strlen(overlap) / COLUMNS) + 1);
	  }

	  last_line_loc = *lines_on_screen;
	  *lines_on_screen += ((strlen(buffer) / COLUMNS) + 1);

	  /* resync terminal from write... */
	  Write_to_screen("%c%c", 2, '\0', '\0');
	  Write_to_screen("%c%c", 2, '\0', '\0');
	}

	Write_to_screen("%s\n\r", 1, buffer);

	if (*lines_on_screen > LINES-6)		/* in case next is too LONG */
	  strcpy(overlap, buffer);
	
	return(0);
}

display_title(lines_on_screen)
int *lines_on_screen;
{
	/** Display top title, including "Page N" **/
	
	*lines_on_screen = 2;	/* the title */
	
	PutLine0(0,1,top_of_screen_left);

	PutLine0(0, COLUMNS-strlen(top_of_screen_right)+(filter?1:3),
	          top_of_screen_right);

	if (memory_lock)
	  StartMemlock();	/* start up! */

	if (strlen(second_line) > 0) {
	  PutLine0(1, 0, second_line);
	  *lines_on_screen = 5;
	}

	dprint1(2,"Display_title set lines-on-screen to %d\n", 
		   *lines_on_screen);
}
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 10887 ]
  then
    echo $filename changed - should be 10887 bytes, not $size bytes
  fi

  chmod 666 $filename
fi

# ---------- file src/string2.c ----------

filename="src/string2.c"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/string2.c...
fi

cat << 'END-OF-FILE' > $filename
/**			string2.c		**/

/** This file contains string functions that are shared throughout the
    various ELM utilities...

    (C) Copyright 1986 Dave Taylor
**/

#ifndef TRUE
#define TRUE		1
#define FALSE		0
#endif

int 
in_string(buffer, pattern)
char *buffer, *pattern;
{
	/** Returns TRUE iff pattern occurs IN IT'S ENTIRETY in buffer. **/ 

	register int i = 0, j = 0;
	
	while (buffer[i] != '\0') {
	  while (buffer[i++] == pattern[j++]) 
	    if (pattern[j] == '\0') 
	      return(TRUE);
	  i = i - j + 1;
	  j = 0;
	}
	return(FALSE);
}

int
chloc(string, ch)
char *string, ch;
{
	/** returns the index of ch in string, or -1 if not in string **/
	register int i;

	for (i=0; i<strlen(string); i++)
	  if (string[i] == ch) return(i);
	return(-1);
}
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 757 ]
  then
    echo $filename changed - should be 757 bytes, not $size bytes
  fi

  chmod 644 $filename
fi

# ---------- file src/calendar.c ----------

filename="src/calendar.c"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/calendar.c...
fi

cat << 'END-OF-FILE' > $filename
/**			calendar.c		**/

/** This routine implements a rather snazzy idea suggested by Warren
    Carithers of the Rochester Institute of Technology that allows
    mail to contain entries formatted in a manner that will allow direct
    copying into a users calendar program.

    Never able to leave good-enough alone, I've extended this idea to a
    further one - the knowledge of a different type of calendar program
    too.  Specifically, the current message can contain either of;

	-> Mon 04/21 1:00p meet with chairman candidate

    or 

	- >April 21
	-   
	-     1:00 pm: Meet with Chairman Candidate
	-

    The first type will have the leading '->' removed and all subsequent
    white space, creating a simple one-line entry in the users calendar
    file.   The second type will remove the '-' and the leading white
    spaces and leave everything else intact (that is, the file in the
    second example would be appended with ">April 21" followed by a
    blank line, the 1:00 pm meeting info, and another blank line.
	
    The file to include this in is either the default as defined in the
    sysdefs.h file (see CALENDAR_FILE) or a filename contained in the
    users ".elmrc" file, "calendar= <filename>".

    (C) Copyright 1986 Dave Taylor
**/

#include "headers.h"

#ifdef ENABLE_CALENDAR		/* if not defined, this will be an empty file */

#include <errno.h>

extern int errno;

char *error_name(), *error_number();

scan_calendar()
{
	FILE *calendar;
	int  count;

	/* First step is to open the celendar file for appending... **/

	if ((calendar = fopen(calendar_file,"a")) == NULL) {
	  dprint1(2, "Error: couldn't append to calendar file %s (save)\n", 
		   calendar_file);
	  dprint2(2, "** %s - %s **\n",
		  error_name(errno), error_description(errno));
	  error1("Couldn't append to file %s!", calendar_file);
	  return; 
	}
	
	count = extract_info(calendar);

	fclose(calendar);

	chown(calendar_file, userid, groupid);	/* ensure owned by user */

	if (count > 0)
	  error2("%d entr%s saved in calendar file", 
		 count, count > 1 ? "ies" : "y");
	else 
	  error("No calendar entries found in that message");

	return;
}

int
extract_info(save_to_fd)
FILE *save_to_fd;
{
	/** Save the relevant parts of the current message to the given
	    calendar file.  The only parameter is an opened file
	    descriptor, positioned at the end of the existing file **/
	    
	register int entries = 0, ok = 1, lines, index, in_entry = FALSE;
	char buffer[SLEN];

    	/** get to the first line of the message desired **/

    	if (fseek(mailfile, header_table[current-1].offset, 0) == -1) {
       	  dprint2(1,"ERROR: Attempt to seek %d bytes into file failed (%s)",
		header_table[current-1].offset, "extract_info");
       	  error1("ELM [seek] failed trying to read %d bytes into file",
	     	header_table[current-1].offset);
       	  return(0);
    	}

        /* how many lines in message? */

        lines = header_table[current-1].lines;

        /* now while not EOF & still in message... scan it! */

        while (ok && lines--) {
          ok = (int) (fgets(buffer, LONG_SLEN, mailfile) != NULL);
	  
	  /* now let's see if it matches the basic pattern... */

	  if ((index = calendar_line(buffer)) > -1) {

	    if (buffer[index] == '>') {	/* single line entry */
	      if (remove_through_ch(buffer, '>')) {
	        fprintf(save_to_fd,"%s", buffer);
	        entries++;
	      }
	    }
	    else {				/* multi-line entry  */
	        fprintf(save_to_fd, "%s", (char *) (buffer + index + 1));
	        in_entry = TRUE;	
	      }
           }
	   else if (in_entry) {
	     in_entry = FALSE;
	     entries++;
	   }
	}

	dprint2(4,"Got %d calender entr%s.\n", entries, entries > 1? "ies":"y");

	return(entries);
}

int
calendar_line(string)
char *string;
{
	/** Iff the input line is of the form;

	      {white space} <one or more '-'> 
	
	    this routine will return the index of the NEXT character
	    after the dashed sequence...If this pattern doesn't occur, 
	    or if any other problems are encountered, it'll return "-1"
	**/

	register int loc = 0;

	if (chloc(string,'-') == -1) 	  /* no dash??? */
	  return(-1);			/* that was easy! */

	/** skip leading white space... **/

	while (whitespace(string[loc])) loc++;	   /* MUST have '-' too! */

	if (string[loc] != '-')	return(-1);	   /* nice try, sleazo! */

	while (string[loc] == '-') loc++;

	if (loc >= strlen(string)) return(-1);	/* Empty line... */

	/* otherwise.... */  

	return(loc);
}
    

int
remove_through_ch(string, ch)
char *string;
char  ch;
{
	/** removes all characters from zero to ch in the string, and 
	    any 'white-space' following the 'n'th char... if it hits a
    	    NULL string, it returns FALSE, otherwise it'll return TRUE!
	**/

	char buffer[SLEN];
	register int index = 0, i = 0;

	while (string[index] != ch && string[index] != '\0')
	  index++;
	
	if (index >= strlen(string)) 
	  return(FALSE);	/* crash! burn! */

	index++;	/* get past the 'ch' character... */

	while (whitespace(string[index])) index++;

	while (index < strlen(string))
	  buffer[i++] = string[index++];

	buffer[i] = '\0';

	strcpy(string, buffer);
	
	return(TRUE);
}

#endif
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 5189 ]
  then
    echo $filename changed - should be 5189 bytes, not $size bytes
  fi

  chmod 666 $filename
fi

# ---------- file src/elm.c ----------

filename="src/elm.c"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/elm.c...
fi

cat << 'END-OF-FILE' > $filename
/**			elm.c			**/

/* main program of the ELM mail system! 

   This file and all associated files and documentation:
	(C) Copyright 1986 Dave Taylor
*/

#include "elm.h"

long bytes();

main(argc, argv)
int argc;
char *argv[];
{
	char ch, address[SLEN], to_whom[LONG_SLEN];
	int  redraw, 		/** do we need to rewrite the entire screen? **/
	     nuhead, 		/** or perhaps just the headers section...   **/
	     nucurr, 		/** or just the current message pointer...   **/
	     nufoot; 		/** clear lines 16 thru bottom and new menu  **/
	int  i;      		/** Random counting variable (etc)           **/
	int  pageon, 		/** for when we receive new mail...          **/
	     last_in_mailbox;	/** for when we receive new mail too...      **/

	parse_arguments(argc, argv, to_whom);

	if (mail_only) {

	   initialize(FALSE);

	   Raw(ON);
	   dprint1(3,"Mail-only: mailing to\n-> \"%s\"\n", 
		   format_long(to_whom));
	   (void) send(to_whom, "", TRUE); 
	   leave(0);
	}

	initialize(TRUE);

	ScreenSize(&LINES, &COLUMNS);

	showscreen();

	mailfile_size = bytes(infile);

	Raw(ON);

	while (1) {
	  redraw = 0;
	  nuhead = 0;
	  nufoot = 0;
	  nucurr = 0;
	  if ((i = bytes(infile)) != mailfile_size) {
	    dprint1(2,"Just received %d bytes more mail (elm)\n", 
		    i - mailfile_size);
	    error("New mail has arrived!   Hang on...");
	    last_in_mailbox = message_count;
	    pageon = header_page;
	    newmbox(2, FALSE, TRUE);
	    clear_error();
	    header_page = pageon;

	    if (on_page(current))   /* do we REALLY have to rewrite? */
	      showscreen();
	    else {
	      update_title();
	      ClearLine(LINES-1);	     /* remove reading message... */
	      error2("%d new message%s received", 
		     message_count - last_in_mailbox,
		     plural(message_count - last_in_mailbox));
	    }
	    mailfile_size = i;
	    if (cursor_control)
	      transmit_functions(ON);	/* insurance */
	  }

	  prompt("Command: ");

	  CleartoEOLN();
	  ch = tolower(GetPrompt()); 
	  CleartoEOS();
	  dprint1(4, "\nCommand: %c\n\n", ch);

	  set_error("");	/* clear error buffer */

	  MoveCursor(LINES-3,strlen("Command: "));

	  switch (ch) {

	    case '?' 	:  if (help())
	  		     redraw++;
			   else
			     nufoot++;
			   break;

	    case ' '    : 
	    case '+'	:  header_page++; nuhead++;	
			   if (move_when_paged && 
			       header_page < (message_count / headers_per_page))
			     current = header_page*headers_per_page + 1;
			   break;

	    case '-'    :  header_page--; nuhead++;	
			   if (move_when_paged && header_page > 0)
			     current = header_page*headers_per_page + 1;
			   break;

	    case '='    :  if (current != 1) {
			     current = 1;
	                     if (get_page(current))
			       nuhead++;	
			     else
			       nucurr++;
			   }				break;

	    case '*'    :  if (current != message_count) {
			     current = message_count;	
	                     if (get_page(current))
			       nuhead++;	
			     else
			       nucurr++;
			   }				break;

	    case '|'    :  Writechar('|'); 
	    		   softkeys_off();
                           redraw = do_pipe();		
	                   softkeys_on(); 		break;

	    case '!'    :  Writechar('!'); 
	    		   softkeys_off();
                           redraw = subshell();		
	                   softkeys_on(); 		break;

	    case '%'    :  get_return(address);
			   clear_error();
			   PutLine1(LINES,(COLUMNS-strlen(address))/2,
			            "%.78s", address);	
		           break;

	    case '/'    :  if (pattern_match()) {
	                      if (get_page(current))
			        nuhead++;
	                      else
	                        nucurr++;
	                   }
			   else 
			      error("pattern not found!");
			   break;

	    case '<'    :  /* scan current message for calendar information */
#ifdef ENABLE_CALENDAR
			   PutLine0(LINES-3, strlen("Command: "), 	
				   "Scan message for calendar entries...");
			   scan_calendar();
#else
	 		   error("Sorry - calendar function disabled");
#endif
			   break;

	    case 'a'    :  alias();     
			   nufoot++; 	
			   define_softkeys(MAIN); 	break;
			
	    case 'b'    :  PutLine0(LINES-3, strlen("Command: "), 
		             "Bounce message");
			   fflush(stdout);
			   if (message_count < 1)
	  		     error("No mail to bounce!");
			   else 
			     nufoot = remail();
			   break;

	    case 'c'    :  PutLine0(LINES-3, strlen("Command: "), 
			      "Change mailbox");
			   define_softkeys(CHANGE);
			   if ((file_changed = leave_mbox(FALSE)) != -1) {
	                     redraw = newmbox(0, TRUE, TRUE);
			     mailfile_size = bytes(infile);	
	      	           }
			   else {
			     file_changed = 0;
			     sort_mailbox(message_count, FALSE);
			   }
			   define_softkeys(MAIN);
			   break;

	    case '^'    :
	    case 'd'    :  if (message_count < 1)
			     error("No mail to delete!");
			   else {
 	                     delete((ch == 'd'));			
			     if (resolve_mode) 	/* move after mail resolved */
			       if (current < message_count) {
	                         current++;  		
			         if (get_page(current))
			           nuhead++;
			         else
			           nucurr++;
			       }
	                   }
			   break;

	    case ctrl('D') : if (message_count < 1)
			       error("No mail to delete!");
			     else 
			       meta_match(DELETED);
			     break;

	    case 'e'    :  PutLine0(LINES-3, strlen("Command: "), "Edit mailbox");
			   if (current > 0)
			     edit_mailbox();
			   else
			     error("Mailbox is empty!");
			   break;
		
	    case 'f'    :  PutLine0(LINES-3, strlen("Command: "), "Forward");
			   define_softkeys(YESNO);
			   if (current > 0)  
	                     redraw = forward();   
			   else 
	                     error("No mail to forward!");
			   define_softkeys(MAIN);
			   break;

	    case 'g'    :  PutLine0(LINES-3, strlen("Command: "), "Group reply");
			   define_softkeys(YESNO);
		           fflush(stdout);
			   if (current > 0) {
			     PutLine0(LINES-3,COLUMNS-40,
                                     "building addresses...");
	                     redraw = reply_to_everyone();	
	                   }
			   else 
			     error("No mail to reply to!"); 
			   define_softkeys(MAIN);
			   break;

	    case 'h'    :  if (filter)
	                     PutLine0(LINES-3, strlen("Command: "), 
				"Message with headers...");
	                   else
			     PutLine0(LINES-3, strlen("Command: "),"Read message");
			   fflush(stdout);
			   i = filter;
			   filter = FALSE;
			   redraw = show_msg(current);
			   filter = i;
			   break;

	    case 'j'    :  current++;  
			   if (get_page(current))
			     nuhead++;
			   else
			     nucurr++;			break;

	    case 'k'    :  current--;  
			   if (get_page(current))
			     nuhead++;
			   else
			     nucurr++;			break;

	    case 'm'    :  PutLine0(LINES-3, strlen("Command: "), "Mail");
			   redraw = send("", "", TRUE); 
			   break;

	    case ctrl('J'):
	    case ctrl('M'):PutLine0(LINES-3, strlen("Command: "), "Read Message");	
			   fflush(stdout);
			   define_softkeys(READ);
			   redraw = show_msg(current);
			   break;

	    case 'n'    :  PutLine0(LINES-3, strlen("Command: "), "Next Message");
			   fflush(stdout);
			   define_softkeys(READ);
			   redraw = show_msg(current);
			   current += redraw;		
			   (void) get_page(current); /* rewrites ANYway */
			   if (current > message_count)
			     current = message_count;
			   break;

	    case 'o'    :  PutLine0(LINES-3, strlen("Command: "), "Options");
			   options();
			   redraw++;	/* always fix da screen... */
			   break;

	    case 'p'    :  PutLine0(LINES-3, strlen("Command: "), "Print mail");
			   fflush(stdout);
			   if (message_count < 1)
			     error("No mail to print!");
			   else
			     printmsg();			
			   break;

	    case 'q'    :  PutLine0(LINES-3, strlen("Command: "), "Quit");

			   if (mbox_specified == 0) lock(OUTGOING);

			   if (mailfile_size != bytes(infile)) {
			     error("New Mail!  Quit cancelled...");
	  		     if (mbox_specified == 0) unlock();
	                   }
		           else
			     quit();		

			   break;

	    case 'r'    :  PutLine0(LINES-3, strlen("Command: "), 
			      "Reply to message");
			   if (current > 0) 
	                     redraw = reply();	
			   else 
			     error("No mail to reply to!"); 
			   softkeys_on();
			   break;

	    case '>'    : /** backwards compatibility **/

	    case 's'    :  if  (message_count < 1)
			     error("No mail to save!");
			   else {
	                     PutLine0(LINES-3, strlen("Command: "),"Save Message");
			     if (save() && resolve_mode) {
			       if (current < message_count) {
			         current++;	/* move to next message */
			         if (get_page(current))
			           nuhead++;
			         else
			           nucurr++;		
			       }
			     }
			   }
			   ClearLine(LINES-2);		
			   break;

            case ctrl('T') :
	    case 't'       :  if (message_count < 1)
			        error("no mail to tag!");
			      else if (ch == 't')
			        tag_message(); 
			      else
			        meta_match(TAGGED);
	                      break;

	    case 'u'    :  if (message_count < 1)
			     error("no mail to mark as undeleted!");
			   else {
	                     undelete();		        
			     if (resolve_mode) 	/* move after mail resolved */
			       if (current < message_count) {
	                         current++;  		
			         if (get_page(current))
			           nuhead++;
			         else
			           nucurr++;
			       }
			   }
			   break;

	    case ctrl('Q') :
	    case ctrl('?') : 
	    case 'x'    :  PutLine0(LINES-3, strlen("Command: "), "Exit");  
                           fflush(stdout);              leave();

	    case ctrl('L') : redraw++;	break;
	    
	    case '@'    : debug_screen();  redraw++;	break;
	
	    case '#'    : debug_message(); redraw++;	break;

	    case NO_OP_COMMAND : break;	/* noop for timeout loop */

	    case ESCAPE : if (cursor_control) {
			    ch = ReadCh(); 
	                    if (ch == up[1]) {
			      current--;
			      if (get_page(current))
			        nuhead++;
			      else
			        nucurr++;			
	                    }
			    else if (ch == down[1]) {
			      current++;
			      if (get_page(current))
			        nuhead++;
			      else
			        nucurr++;			
			    }
			    else if (hp_terminal) {	/* kludge! */
			      if (ch == 'U') {	/* <NEXT> */
	    			header_page++; 
				nuhead++;
			        if (move_when_paged)
			          current = header_page*headers_per_page + 1;
			      }
			      else if (ch == 'V') {  /* <PREV> */
	    			header_page--; 
				nuhead++;
			        if (move_when_paged)
			          current = header_page*headers_per_page + 1;
			      }
			      else if (ch == 'h' || ch == 'H') { /* <HOME UP> */
			        current = 1;
	                        if (get_page(current))
			          nuhead++;
	                        else
	                          nucurr++;
			      }
			      else if (ch == 'F') {  /* <HOME DOWN> */
			        current = message_count;
	                        if (get_page(current))
			          nuhead++;
	                        else
	                          nucurr++;
			      }
			      else /* what DID they hit??? */
				 PutLine2(LINES-3, strlen("Command: "), 
				          "%c%c", ESCAPE, ch);
			    }
			    else /* false hit - output */
			      PutLine2(LINES-3, strlen("Command: "), 
				          "%c%c", ESCAPE, ch);
			    break;
			  }
				/* else fall into default.. */

	    default	: if (ch > '0' && ch <= '9') {
			    PutLine0(LINES-3, strlen("Command: "), 
				    "New Current Message");
			    current = read_number(ch, message_count);
	                    if (get_page(current))
			      nuhead++;
	                    else
	                      nucurr++;
			  }
			  else
	 		    error("Unknown command: Use '?' for commands");
	  }

	  dprint5(4,"redraw=%s, current=%d, nuhead=%s, nufoot=%s, nucurr=%s\n",
		  onoff(redraw), current, onoff(nuhead), onoff(nufoot),
		  onoff(nucurr));

	  if (redraw)
	    showscreen();

	  if (current < 1) {
	    if (message_count > 0) {
	      error("already at message #1!");
	      current = 1;
	    }
	    else if (current < 0) {
	      error("No messages to read!");
	      current = 0;
	    }
	  }
	  else if (current > message_count) {
	    if (message_count > 0) {
	      error2("only %d message%s!", message_count, 
		     plural(message_count));
	      current = message_count;
	    }
	    else {
	      error("No messages to read!");
	      current = 0;
	    }
	  }

	  if (nuhead) 
	    show_headers();
	  else if (nucurr)
	    show_current();
	  else if (nufoot) {
	    MoveCursor(LINES-7, 0);  
            CleartoEOS();
	    if (mini_menu)
	      show_menu();
	  }

	} /* the BIG while loop! */
}

debug_screen()
{
	/**** spit out all the current variable settings and the table
	      entries for the current 'n' items displayed. ****/

	register int i, j;
	char     buffer[SLEN];

	ClearScreen();
	Raw(OFF);

	PutLine2(0,0,"Current message number = %d\t\t%d message(s) total\n",
	        current, message_count);
	PutLine2(2,0,"Header_page = %d           \t\t%d possible page(s)\n",
		header_page, (int) (message_count / headers_per_page) + 1);

	PutLine1(4,0,"\nCurrent mailfile is %s.\n\n", infile);

	i = header_page*headers_per_page;	/* starting header */

	if ((j = i + (headers_per_page-1)) >= message_count) 
	  j = message_count-1;

	Write_to_screen(
"Num      From                 	Subject                         Lines  Offset\n\n",0);

	while (i <= j) {
	   sprintf(buffer, 
	   "%3d  %-16.16s  %-40.40s  %4d  %d\n",
		    i+1,
	            header_table[i].from, 
	            header_table[i].subject,
		    header_table[i].lines,
		    header_table[i].offset);
	    Write_to_screen(buffer, 0);
	  i++;
	}
	
	Raw(ON);

	PutLine0(LINES,0,"Press any key to return: ");
	(void) ReadCh();
}


debug_message()
{
	/**** Spit out the current message record.  Include EVERYTHING
	      in the record structure. **/
	
	char buffer[SLEN];

	ClearScreen();
	Raw(OFF);

	Write_to_screen("\t\t\t----- Message %d -----\n\n\n\n", 1,
		current);

	Write_to_screen("Lines : %-5d\t\t\t\tStatus: N  E  A  P  D  T\n", 1,
		header_table[current-1].lines);
	Write_to_screen("            \t\t\t\t        e  x  c  r  e  a\n", 0);
	Write_to_screen("            \t\t\t\t        w  p  t  i  l  g\n\n", 0);

	sprintf(buffer, "Offset: %ld\t\t\t\t        %d  %d  %d  %d  %d  %d\n\n",
		header_table[current-1].offset,
		(header_table[current-1].status & NEW) != 0,
		(header_table[current-1].status & EXPIRED) != 0,
		(header_table[current-1].status & ACTION) != 0,
		(header_table[current-1].status & PRIORITY) != 0,
		(header_table[current-1].status & DELETED) != 0,
	        (header_table[current-1].status & TAGGED) != 0);
	Write_to_screen(buffer, 0);

	sprintf(buffer, "Received on: %d/%d/%d at %d:%02d\n\n",
	        header_table[current-1].received.month+1,
	        header_table[current-1].received.day,
	        header_table[current-1].received.year,
	        header_table[current-1].received.hour,
	        header_table[current-1].received.minute);
	Write_to_screen(buffer, 0);

	sprintf(buffer, "Message sent on: %s, %s %s, %s at %s\n\n",
	        header_table[current-1].dayname,
	        header_table[current-1].month,
	        header_table[current-1].day,
	        header_table[current-1].year,
	        header_table[current-1].time);
	Write_to_screen(buffer, 0);
	
	Write_to_screen("\nFrom: %s\n\nSubject: %s", 2,
		header_table[current-1].from,
	        header_table[current-1].subject);

	Write_to_screen("\nTo: %s\n\nIndex = %d\n", 2,
		header_table[current-1].to,
		header_table[current-1].index_number);
	
	Raw(ON);

	PutLine0(LINES,0,"Press any key to return: ");
	(void) ReadCh();
}
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 15852 ]
  then
    echo $filename changed - should be 15852 bytes, not $size bytes
  fi

  chmod 644 $filename
fi

# ---------- file src/replyc ----------

filename="src/replyc"

if [ -f $filename ]
then
  echo File \"$filename\" already exists\!  Skipping...
  filename=/dev/null		# throw it away
else
  echo extracting file src/replyc...
fi

cat << 'END-OF-FILE' > $filename

/**		reply.c		**/

/*** routine allows replying to the sender of the current message 

     (C) Copyright 1985, Dave Taylor
***/

#include "headers.h"
#include <errno.h>

#ifndef BSD
#  include <sys/utsname.h>
#endif

/** Note that this routine generates automatic header information
    for the subject and (obviously) to lines, but that these can
    be altered while in the editor composing the reply message! 
**/

char *strip_parens(), *get_token(), *notes_machine();

extern int errno;

char *error_name();

int
reply()
{
	/** Reply to the current message.  Returns non-zero iff
	    the screen has to be rewritten. **/

	char return_address[LONG_SLEN], subject[SLEN];
	int  return_value;

	get_return(return_address);

	if (first_word(header_table[current-1].from, "To:")) {
	  strcpy(subject, header_table[current-1].subject);
	  return_value = send(return_address, subject, TRUE);
	}
	else if (header_table[current-1].subject[0] != '\0') {
	  if ((strncmp("Re:", header_table[current-1].subject, 3) == 0) ||
	      (strncmp("RE:", header_table[current-1].subject, 3) == 0) ||
	      (strncmp("re:", header_table[current-1].subject, 3) == 0)) 
	    strcpy(subject, header_table[current-1].subject);
	  else {
	    strcpy(subject,"Re: ");
	    strcat(subject,header_table[current-1].subject); 
	  }
	  return_value = send(return_address, subject, TRUE);
	}
	else
	  return_value = send(return_address, "Re: your mail", TRUE);

	return(return_value);
}

int
reply_to_everyone()
{
	/** Reply to everyone who received the current message.  
	    This includes other people in the 'To:' line and people
	    in the 'Cc:' line too.  Returns non-zero iff the screen 
            has to be rewritten. **/

	char return_address[LONG_SLEN], subject[SLEN];
	char full_address[VERY_LONG_STRING];
	int  return_value;

	get_return(return_address);

	strcpy(full_address, return_address);	/* sender gets copy */
	
	get_and_expand_everyone(return_address, full_address);

	if (header_table[current-1].subject[0] != '\0') {
	  if ((strncmp("Re:", header_table[current-1].subject, 3) == 0) ||
	      (strncmp("RE:", header_table[current-1].subject, 3) == 0) ||
	      (strncmp("re:", header_table[current-1].subject, 3) == 0)) 
	    strcpy(subject, header_table[current-1].subject);
	  else {
	    strcpy(subject,"Re: ");
	    strcat(subject,header_table[current-1].subject); 
	  }
	  return_value = send(full_address, subject, TRUE);
	}
	else
	  return_value = send(full_address, "Re: your mail", TRUE);

	return(return_value);

}

int
forward()
{
	/** Forward the current message.  What this actually does is
	    to set auto_copy to true, then call 'send' to get the 
	    address and route the mail. 
	**/

	char subject[SLEN], address[VERY_LONG_STRING];
	int  original_cc, results, edit_msg;

	original_cc = auto_copy;
	address[0] = '\0';

	edit_msg = (want_to("Edit outgoing message (y/n) ? ",'y',FALSE) != 'n');
	Write_to_screen("%s", 1, edit_msg? "Yes" : "No");

	auto_cc = TRUE;			/* we want a copy */

	if (strlen(header_table[current-1].subject) > 0) {
	  strcpy(subject,header_table[current-1].subject); 
	  results = send(address, subject, edit_msg);
	}
	else
	  results = send(address, "Forwarded Mail...", edit_msg);
	
	auto_copy = original_cc;

	return(results);
}

get_and_expand_everyone(return_address, full_address)
char *return_address, *full_address;
{
	/** Read the current message, extracting addresses from the 'To:'
	    and 'Cc:' lines.   As each address is taken, ensure that it
	    isn't to the author of the message NOR to us.  If neither,
	    prepend with current return address and append to the 
	    'full_address' string.
	**/

    char ret_address[LONG_SLEN], buf[LONG_SLEN], new_address[LONG_SLEN];
    char *bufptr, *address;
    int  in_message = 1, first_pass = 0;

    /** First off, get to the first line of the message desired **/

    if (fseek(mailfile, header_table[current-1].offset, 0) == -1) {
	dprint3(1,"Error: seek %ld resulted in errno %s (%s)\n", 
		 header_table[current-1].offset, error_name(errno), 
		 "get_and_expand_everyone");
	error2("ELM [seek] couldn't read %d bytes into file (%s)",
	       header_table[current-1].offset, error_name(errno));
	return;
    }
 
    /** okay!  Now we're there!  **/

    /** let's fix the ret_address to reflect the return address of this
	message with '%s' instead of the persons login name... **/

    translate_return(return_address, ret_address);

    /** now let's parse the actual message! **/

    while (in_message) {
      in_message = (int) (fgets(buf, LONG_SLEN, mailfile) != NULL);
      if (first_word(buf, "From ") && first_pass++ != 0) 
	in_message = FALSE;
      else if (first_word(buf, "To:") || first_word(buf, "Cc:") ||
	       first_word(buf, "CC:") || first_word(buf, "cc:")) {
	do {
	  no_ret(buf);

	  bufptr = (char *) (strip_parens(buf) + 3); /* 3 = strlen of prompt */

	  while ((address = get_token(bufptr, "\t, ", 0)) != NULL) {
	    if (okay_address(address, return_address)) {
	      sprintf(new_address, ret_address, address);
	      optimize_and_add(new_address, full_address);
	    }
	    bufptr = NULL;
	  }

          in_message = (int) (fgets(buf, LONG_SLEN, mailfile) != NULL);
	
	} while (in_message && whitespace(buf[0]));

      }
      else if (strlen(buf) < 2)	/* done with header */
	 in_message = FALSE;
    }
}

int
okay_address(address, return_address)
char *address, *return_address;
{
	/** This routine checks to ensure that the address we just got
	    from the "To:" or "Cc:" line isn't us AND isn't the person	
	    who sent the message.  Returns true iff neither is the case **/

	char our_address[SLEN];
	struct addr_rec  *alternatives;

	if (in_string(address, return_address))
	  return(FALSE);

	sprintf(our_address, "%s!%s", hostname, username);

	if (in_string(address, our_address))
	  return(FALSE);

	sprintf(our_address, "%s@%s", username, hostname);
	  
	if (in_string(address, our_address))
	  return(FALSE);

	alternatives = alternative_addresses;

	while (alternatives != NULL) {
	  if (in_string(address, alternatives->address))
	    return(FALSE);
	  alternatives = alternatives->next;
	}

	return(TRUE);
}
	    
optimize_and_add(new_address, full_address)
char *new_address, *full_address;
{
	/** This routine will add the new address to the list of addresses
	    in the full address buffer IFF it doesn't already occur.  It
	    will also try to fix dumb hops if possible, specifically hops
	    of the form ...a!b...!a... and hops of the form a at b@b etc 
	**/

	register int len, host_count = 0, i;
	char     hosts[MAX_HOPS][SLEN];	/* array of machine names */
	char     *host, *addrptr;

	if (in_string(full_address, new_address))
	  return(1);	/* duplicate address */

	/** optimize **/
	/*  break down into a list of machine names, checking as we go along */
	
	addrptr = (char *) new_address;

	while ((host = get_token(addrptr, "!", 1)) != NULL) {
	  for (i = 0; i < host_count && ! equal(hosts[i], host); i++)
	      ;

	  if (i == host_count) {
	    strcpy(hosts[host_count++], host);
	    if (host_count == MAX_HOPS) {
	       dprint1(2,
              "Error: hit max_hops limit trying to build return address (%s)\n",
		      "optimize_and_add");
	       error("Can't build return address - hit MAX_HOPS limit!");
	       return(1);
	    }
	  }
	  else 
	    host_count = i + 1;
	  addrptr = NULL;
	}

	/** fix the ARPA addresses, if needed **/
	
	if (chloc(hosts[host_count-1], '@') > -1)
	  fix_arpa_address(hosts[host_count-1]);
	  
	/** rebuild the address.. **/

	new_address[0] = '\0';

	for (i = 0; i < host_count; i++)
	  sprintf(new_address, "%s%s%s", new_address, 
	          new_address[0] == '\0'? "" : "!",
	          hosts[i]);

	if (full_address[0] == '\0')
	  strcpy(full_address, new_address);
	else {
	  len = strlen(full_address);
	  full_address[len  ] = ',';
	  full_address[len+1] = ' ';
	  full_address[len+2] = '\0';
	  strcat(full_address, new_address);
	}

	return(0);
}

get_return_name(address, name, shift_lower)
char *address, *name;
int  shift_lower;
{
	/** Given the address (either a single address or a combined list 
	    of addresses) extract the login name of the first person on
	    the list and return it as 'name'.  Modified to stop at
	    any non-alphanumeric character. **/

	/** An important note to remember is that it isn't vital that this
	    always returns just the login name, but rather that it always
	    returns the SAME name.  If the persons' login happens to be,
	    for example, joe.richards, then it's arguable if the name 
	    should be joe, or the full login.  It's really immaterial, as
	    indicated before, so long as we ALWAYS return the same name! **/

	/** Another note: modified to return the argument as all lowercase
	    always, unless "shift_lower" isn't TRUE... **/

	char single_address[LONG_SLEN];
	register int i, loc, index = 0;

	dprint2(6,"get_return_name called with (%s, %s)\n", 
		   address, name);

	/* First step - copy address up to a comma, space, or EOLN */

	for (i=0; address[i] != ',' && ! whitespace(address[i]) && 
	     address[i] != '\0'; i++)
	  single_address[i] = address[i];
	single_address[i] = '\0';

	/* Now is it an ARPA address?? */

	if ((loc = chloc(single_address, '@')) != -1) {	  /* Yes */

	  /* At this point the algorithm is to keep shifting our copy 
	     window left until we hit a '!'.  The login name is then
             located between the '!' and the first metacharacter to 
	     it's right (ie '%', ':' or '@'). */

	  dprint0(3,"Breaking down ARPA address...(get_return_name)\n");

	  for (i=loc; single_address[i] != '!' && i > -1; i--)
	      if (single_address[i] == '%' || 
	          single_address[i] == ':' ||
	          single_address[i] == '.' ||	/* no domains */
		  single_address[i] == '@') loc = i-1;
	
	  if (i < 0 || single_address[i] == '!') i++;

	  dprint3(3,"\tgetting from %d to %d out of '%s'\n", 
		  i, loc - i + 1, single_address);

	  for (index = 0; index < loc - i + 1; index++)
	    if (shift_case)
	      name[index] = tolower(single_address[index+i]);
	    else
	      name[index] = single_address[index+i];
	  name[index] = '\0';

	  dprint1(3,"\tfor a return name of '%s'\n", name);
	}
	else {	/* easier - standard USENET address */

	  /* This really is easier - we just cruise left from the end of
	     the string until we hit either a '!' or the beginning of the
             line.  No sweat. */

	  loc = strlen(single_address)-1; 	/* last char */

	  for (i = loc; single_address[i] != '!' && single_address[i] != '.' 
	       && i > -1; i--)
	     name[index++] = tolower(single_address[i]);
	  name[index] = '\0';
	  reverse(name);
	}

	dprint2(6,"get_return_name leaves with (%s, %s)\n", 
		   address, name);
}
END-OF-FILE

if [ "$filename" != "/dev/null" ]
then
  size=`wc -c < $filename`

  if [ $size != 10750 ]
  then
    echo $filename changed - should be 10750 bytes, not $size bytes
  fi

  chmod 666 $filename
fi

echo end of this archive file....
exit 0



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