[comp.sources.unix] v22i073: ELM mail syste, release 2.3, Part14/26

rsalz@bbn.com (Rich Salz) (05/31/90)

Submitted-by: Syd Weinstein <syd@dsinc.dsi.com>
Posting-number: Volume 22, Issue 73
Archive-name: elm2.3/part14

---- Cut Here and unpack ----
#!/bin/sh
# this is part 14 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file src/editmsg.c continued
#
CurArch=14
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 src/editmsg.c"
sed 's/^X//' << 'SHAR_EOF' >> src/editmsg.c
X			     strcpy(editor, emacs_editor);
X	  		     fclose(edit_fd);
X			     (void) edit_the_message(filename,0);
X			     strcpy(editor, buffer);
X			     edit_fd = fopen(filename, "a");
X                             Write_to_screen(post_ed_continue, 0);
X	                     goto more_input;
X		           }
X		           else
X	                     Write_to_screen(
X			"\n\r(Can't find Emacs on this system! Continue.)\n\r",
X			0);
X			 else
X			   Write_to_screen(
X			"\n\r(Don't know where Emacs would be. Continue.)\n\r",
X			0);	
X			 goto more_input;
X
X	       case 'v' : NewLine();
X			  strcpy(buffer, editor);
X			  strcpy(editor, default_editor);
X			  fclose(edit_fd);
X			  (void) edit_the_message(filename,0);
X			  strcpy(editor, buffer);
X			  edit_fd = fopen(filename, "a");
X                          Write_to_screen(post_ed_continue, 0);
X	                  goto more_input;
X
X	       case 'o' : Write_to_screen(
X			     "\n\rPlease enter the name of the editor: ", 0);
X			  editor_name[0] = '\0';
X			  optionally_enter(editor_name,-1,-1, FALSE, FALSE);
X			  NewLine();
X	                  if (strlen(editor_name) > 0) {
X	                    strcpy(buffer, editor);
X			    strcpy(editor, editor_name);
X			    fclose(edit_fd);
X			    (void) edit_the_message(filename,0);
X			    strcpy(editor, buffer);
X			    edit_fd = fopen(filename, "a");
X                            Write_to_screen(post_ed_continue, 0);
X	                    goto more_input;
X		          }
X	  		  Write_to_screen(simple_continue, 0);
X	                  goto more_input; 
X
X		case '<' : NewLine();
X			   if (strlen(buffer) < 3)
X			     Write_to_screen(
X		 "(You need to use a specific command here. Continue.)\n\r");
X			   else {
X			     sprintf(buf, " > %s%s.%d 2>&1", temp_dir, temp_edit, getpid());
X			     strcat(buffer, buf);
X			     if (( old_raw = RawState()) == ON)
X			       Raw(OFF);
X			     (void) system_call((char *) buffer+2, SH, TRUE, TRUE);
X			     if (old_raw == ON)
X			        Raw(ON);
X			     sprintf(buffer, "~r %s%s.%d", temp_dir, temp_edit, getpid());
X	      	             read_in_file(edit_fd, (char *) buffer + 3, 0);
X			     (void) unlink((char *) buffer+3);
X			   }
X	                   goto more_input; 
X
X		case '!' : NewLine();
X			   if (( old_raw = RawState()) == ON)
X			     Raw(OFF);
X			   if (strlen(buffer) < 3) 
X			     (void) system_call(shell, USER_SHELL, TRUE, TRUE);
X			   else
X	                     (void) system_call((char *) buffer+2, USER_SHELL, TRUE, TRUE);
X			   if (old_raw == ON)
X			      Raw(ON);
X	    		   Write_to_screen(simple_continue, 0);
X			   goto more_input;
X
X		 case 'm' : /* same as 'f' but with leading prefix added */
X
X	         case 'f' : /* this can be directly translated into a
X			       'readmsg' call with the same params! */
X			    NewLine();
X			    read_in_messages(edit_fd, (char *) buffer + 1);
X			    goto more_input;
X
X	         case 'p' : /* print out message so far.  Soooo simple! */
X			    print_message_so_far(edit_fd, filename);
X			    goto more_input;
X
X		 default  : sprintf(buf,
X			 "\n\r(Don't know what %c%c is. Try %c? for help.)\n\r",
X				    escape_char, buffer[1], escape_char);
X			    Write_to_screen(buf, 0);
X	       }
X	     }
X	     else {
Xtilde_input:
X	       fprintf(edit_fd, "%s\n", buffer);
X	       NewLine();
X	     }
X	  buffer[0] = '\0';
X	}
X
X
X	Write_to_screen("\n\r<end-of-message>\n\r\n\r\n\r\n\r", 0);
X
X	(void) signal(SIGINT,  oldint);
X	(void) signal(SIGQUIT, oldquit);
X
X	if (edit_fd != NULL)	/* insurance... */
X	  fclose(edit_fd);
X
X	return(0);
X}
X
Xtilde_help()
X{
X	/* a simple routine to print out what is available at this level */
X
X	char	buf[SLEN];
X
X	Write_to_screen("\n\r(Available options at this point are:\n\r\n\r", 0);
X	sprintf(buf, "\t%c?\tPrint this help menu.\n\r", escape_char);
X	Write_to_screen(buf, 0);
X	if (escape_char == TILDE_ESCAPE) /* doesn't make sense otherwise... */
X	  Write_to_screen(
X	      "\t~~\tAdd line prefixed by a single '~' character.\n\r", 0);
X
X	sprintf(buf,
X	  "\t%cb\tChange the addresses in the Blind-carbon-copy list.\n\r",
X	  escape_char);
X	Write_to_screen(buf, 0);
X
X	sprintf(buf,
X		"\t%cc\tChange the addresses in the Carbon-copy list.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X	      "\t%ce\tInvoke the Emacs editor on the message, if possible.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%cf\tAdd the specified message or current.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X	      "\t%ch\tChange all available headers (to, cc, bcc, subject).\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%cm\tSame as '%cf', but with the current 'prefix'.\n\r",
X		escape_char, escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%co\tInvoke a user specified editor on the message.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X	      "\t%cp\tPrint out message as typed in so far.\n\r", escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%cr\tRead in the specified file.\n\r", escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%cs\tChange the subject of the message.\n\r", escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%ct\tChange the addresses in the To list.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X		"\t%cv\tInvoke the Vi visual editor on the message.\n\r",
X		escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X          "\t%c!\tExecute a unix command (or give a shell if no command).\n\r",
X	  escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X      "\t%c<\tExecute a unix command adding the output to the message.\n\r",
X	  escape_char);
X	Write_to_screen(buf, 0);
X	sprintf(buf,
X      "\t.  \tby itself on a line (or a control-D) ends the message.\n\r");
X	Write_to_screen(buf, 0);
X	Write_to_screen("Continue.)\n\r", 0);
X}
X
Xread_in_file(fd, filename, show_user_filename)
XFILE *fd;
Xchar *filename;
Xint   show_user_filename;
X{
X	/** Open the specified file and stream it in to the already opened 
X	    file descriptor given to us.  When we're done output the number
X	    of lines and characters we added, if any... **/
X
X	FILE *myfd;
X	char myfname[SLEN], buffer[SLEN];
X	register int n;
X	register int lines = 0, nchars = 0;
X
X	for ( n = 0 ; whitespace(filename[n]) ; n++ );
X
X	/** expand any shell variables, '~' or other notation... **/
X	/* temp copy of filename to buffer since expand_env is destructive */
X	strcpy(buffer, &filename[n]);
X	expand_env(myfname, buffer);
X
X	if (strlen(myfname) == 0) {
X	  Write_to_screen(
X	      "\n\r(No filename specified for file read! Continue.)\n\r", 0);
X	  return;
X	}
X
X	if ((myfd = fopen(myfname,"r")) == NULL) {
X	  Write_to_screen("\n\r(Couldn't read file '%s'! Continue.)\n\r", 1,
X		 myfname);
X	  return;
X	}
X
X	while (fgets(buffer, SLEN, myfd) != NULL) {
X	  n = strlen(buffer);
X	  if(buffer[n-1] == '\n') lines++;
X	  nchars += n;
X  	  fputs(buffer, fd);
X	  fflush(stdout);
X	}
X
X	fclose(myfd);
X
X	if (show_user_filename)
X	  sprintf(buffer,
X		"\n\r(Added %d line%s [%d char%s] from file %s. Continue.)\n\r",
X		lines, plural(lines), nchars, plural(nchars), myfname);
X	else
X	  sprintf(buffer,
X		"\n\r(Added %d line%s [%d char%s] to message. Continue.)\n\r",
X		lines, plural(lines), nchars, plural(nchars));
X	Write_to_screen(buffer, 0);
X
X	return;
X}
X
Xprint_message_so_far(edit_fd, filename)
XFILE *edit_fd;
Xchar *filename;
X{
X	/** This prints out the message typed in so far.  We accomplish
X	    this in a cheap manner - close the file, reopen it for reading,
X	    stream it to the screen, then close the file, and reopen it
X	    for appending.  Simple, but effective!
X
X	    A nice enhancement would be for this to -> page <- the message
X	    if it's sufficiently long.  Too much work for now, though.
X	**/
X	
X	char buffer[SLEN];
X
X	fclose(edit_fd);
X
X	if ((edit_fd = fopen(filename, "r")) == NULL) {
X	  Write_to_screen("\n\rMayday!  Mayday!  Mayday!\n\r", 0);
X	  Write_to_screen("\n\rPanic: Can't open file for reading!  Bail!\n\r",
X	      0);
X	  emergency_exit();
X	}
X
X	Write_to_screen("\n\rTo: %s\n\r", 1, format_long(to, 4));
X	Write_to_screen("Cc: %s\n\r", 1, format_long(cc, 4));
X	Write_to_screen("Bcc: %s\n\r", 1, format_long(bcc, 5));
X	Write_to_screen("Subject: %s\n\r\n\r", 1, subject);
X
X	while (fgets(buffer, SLEN, edit_fd) != NULL) {
X	  Write_to_screen(buffer, 0);
X	  CarriageReturn();
X        }
X
X	fclose(edit_fd);
X
X	if ((edit_fd = fopen(filename, "a")) == NULL) {
X	  Write_to_screen("Mayday!  Mayday!  Abandon Ship!  Aiiieeeeee\n\r", 0);
X	  Write_to_screen("\n\rPanic: Can't reopen file for appending!\n\r", 0);
X	  emergency_exit();
X	}
X
X	Write_to_screen("\n\r(Continue entering message.)\n\r", 0);
X}
X
Xread_in_messages(fd, buffer)
XFILE *fd;
Xchar *buffer;
X{
X	/** Read the specified messages into the open file.  If the
X	    first character of "buffer" is 'm' then prefix it, other-
X	    wise just stream it in straight...Since we're using the
X	    pipe to 'readmsg' we can also allow the user to specify
X	    patterns and such too...
X	**/
X
X	FILE *myfd, *popen();
X	char  local_buffer[SLEN], *arg;
X	register int add_prefix=0, mindex;
X	register int n;
X	int lines = 0, nchars = 0;
X
X	add_prefix = tolower(buffer[0]) == 'm';
X
X	/* strip whitespace to get argument */
X	for(arg = &buffer[1]; whitespace(*arg); arg++)
X		;
X
X	/* if no argument or begins with a digit, then retrieve the
X	 * appropriate message from the current folder, else
X	 * just take the arguments as a pattern for readmsg to match in 
X	 * the current folder.
X	 */
X	if(isdigit(*arg) || *arg == '\0') {
X	  if(message_count < 1) {
X	    Write_to_screen("(No messages to read in! Continue.)\n\r", 0);
X	    return;
X	  }
X	  if((mindex = atoi(arg)) == 0)	/* no argument - read in current msg */
X	    mindex = current;
X	  else if(mindex < 1 || mindex > message_count) {
X	    sprintf(local_buffer,
X	      "(Valid messsage numbers are between 1 and %d. Continue.)\n\r",
X	      message_count);
X	    Write_to_screen(local_buffer, 0);
X	    return;
X	  }
X
X	  sprintf(local_buffer, "%s -f %s %d", readmsg, cur_folder,
X		  headers[mindex-1]->index_number);
X
X	} else
X	  sprintf(local_buffer, "%s -f %s %s", readmsg, cur_folder, arg);
X
X
X	/* now get output of readmsg */
X	if ((myfd = popen(local_buffer, "r")) == NULL) {
X	   Write_to_screen("(Can't find 'readmsg' command! Continue.)\n\r",
X	       0);
X	   return;	
X	}
X
X	dprint(5, (debugfile, "** readmsg call: \"%s\" **\n", local_buffer));
X
X	while (fgets(local_buffer, SLEN, myfd) != NULL) {
X	  n = strlen(local_buffer);
X	  nchars += n;
X	  if (local_buffer[n-1] == '\n') lines++;
X	  if (add_prefix)
X	    fprintf(fd, "%s%s", prefixchars, local_buffer);
X	  else 
X	    fputs(local_buffer, fd);
X	}
X
X	pclose(myfd);
X	
X	if (lines == 0)
X	  sprintf(local_buffer,
X	 	 "(Couldn't add the requested message. Continue.)\n\r");
X	else
X	  sprintf(local_buffer,
X		"(Added %d line%s [%d char%s] to message. Continue.)\n\r",
X		lines, plural(lines), nchars, plural(nchars));
X	Write_to_screen(local_buffer, 0);
X
X	return;
X}
X
Xget_with_expansion(prompt, buffer, expanded_buffer, sourcebuf)
Xchar *prompt, *buffer, *expanded_buffer, *sourcebuf;
X{
X	/** This is used to prompt for a new value of the specified field.
X	    If expanded_buffer == NULL then we won't bother trying to expand
X	    this puppy out!  (sourcebuf could be an initial addition)
X	**/
X
X	Write_to_screen(prompt, 0);	fflush(stdout);	/* output! */
X
X	if (sourcebuf != NULL) {
X	  while (!whitespace(*sourcebuf) && *sourcebuf != '\0') 
X	    sourcebuf++;
X	  if (*sourcebuf != '\0') {
X	    while (whitespace(*sourcebuf)) 
X	      sourcebuf++;
X	    if (strlen(sourcebuf) > 0) {
X	      strcat(buffer, " ");
X	      strcat(buffer, sourcebuf);
X	    }
X	  }
X	}
X
X	optionally_enter(buffer, -1, -1, TRUE, FALSE);	/* already data! */
X
X	if(expanded_buffer != NULL) {
X	  build_address(strip_commas(buffer), expanded_buffer);
X	  if(*expanded_buffer != '\0') {
X	    if (*prompt == '\n')
X	      Write_to_screen("%s%s", 2, prompt, expanded_buffer);
X	    else
X	      Write_to_screen("\n\r%s%s", 2, prompt, expanded_buffer);
X	  }
X	}
X	NewLine();
X
X	return;
X}
X
Xedit_interrupt()
X{
X	/** This routine is called when the user hits an interrupt key
X	    while in the builtin editor...it increments the number of 
X	    times an interrupt is hit and returns it.
X	**/
X
X	signal(SIGINT, edit_interrupt);
X	signal(SIGQUIT, edit_interrupt);
X
X	if (interrupts_while_editing++ == 0)
X	  Write_to_screen("(Interrupt. One more to cancel this letter.)\n\r",
X	  	0);
X	else
X	  Write_to_screen("(Interrupt. Letter cancelled.)\n\r", 0);
X
X	longjmp(edit_location, 1);		/* get back */
X}
SHAR_EOF
echo "File src/editmsg.c is complete"
chmod 0444 src/editmsg.c || echo "restore of src/editmsg.c fails"
echo "x - extracting src/elm.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/elm.c &&
X
Xstatic char rcsid[] = "@(#)$Id: elm.c,v 4.1 90/04/28 22:42:54 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X * This file and all associated files and documentation:
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 *	elm@DSI.COM			dsinc!elm
X *
X *******************************************************************************
X * $Log:	elm.c,v $
X * Revision 4.1  90/04/28  22:42:54  syd
X * checkin of Elm 2.3 as of Release PL0
X * 
X *
X ******************************************************************************/
X
X/* Main program of the ELM mail system! 
X*/
X
X#include "elm.h"
X
X#ifdef BSD
X#undef        toupper
X#undef        tolower
X#endif
X
Xlong bytes();
Xchar *format_long(), *parse_arguments();
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X	{
X	int  ch;
X	char address[SLEN], to_whom[SLEN], *req_mfile;
X	int  key_offset;        /** Position offset within keyboard string   **/
X	int  redraw, 		/** do we need to rewrite the entire screen? **/
X	     nucurr, 		/** change message list or just the current message pointer...   **/
X	     nufoot; 		/** clear lines 16 thru bottom and new menu  **/
X	int  i,j;      		/** Random counting variables (etc)          **/
X	int  pageon, 		/** for when we receive new mail...          **/
X	     last_in_folder;	/** for when we receive new mail too...      **/
X	long num;		/** another variable for fun..               **/
X	extern char version_buff[];
X	extern int errno;
X
X	req_mfile = parse_arguments(argc, argv, to_whom);
X
X	initialize(req_mfile);
X
X	if (mail_only) {
X	   dprint(3, (debugfile, "Mail-only: mailing to\n-> \"%s\"\n", 
X		   format_long(to_whom, 3)));
X	   if(!batch_only) {
X	     sprintf(address, "Send only mode [ELM %s]", version_buff);
X	     Centerline(1, address);
X	   }
X	   (void) sendmsg(to_whom, "", batch_subject, TRUE,
X	     (batch_only ? NO : allow_forms), FALSE); 
X	   leave(0);
X	} else if (check_only) {
X	   do_check_only(to_whom);
X	   leave(0);
X	}
X
X	ScreenSize(&LINES, &COLUMNS);
X
X	showscreen();
X
X	while (1) {
X	  redraw = 0;
X	  nufoot = 0;
X	  nucurr = 0;
X	  if ((num = bytes(cur_folder)) != mailfile_size) {
X	    dprint(2, (debugfile, "Just received %d bytes more mail (elm)\n", 
X		    num - mailfile_size));
X	    error("New mail has arrived! Hang on...");
X	    fflush(stdin);	/* just to be sure... */
X	    last_in_folder = message_count;
X	    pageon = header_page;
X
X	    if ((errno = can_access(cur_folder, READ_ACCESS)) != 0) {
X	      dprint(1, (debugfile,
X		    "Error: given file %s as folder - unreadable (%s)!\n", 
X		    cur_folder, error_name(errno)));
X	      fprintf(stderr,"Can't open folder '%s' for reading!\n", cur_folder);
X	      leave();
X	      }
X
X	    newmbox(cur_folder, TRUE);	/* last won't be touched! */
X	    clear_error();
X	    header_page = pageon;
X
X	    if (on_page(current))   /* do we REALLY have to rewrite? */
X	      showscreen();
X	    else {
X	      update_title();
X	      ClearLine(LINES-1);	     /* remove reading message... */
X	      error2("%d new message%s received.", 
X		     message_count - last_in_folder,
X		     plural(message_count - last_in_folder));
X	    }
X	    /* mailfile_size = num; */
X	    if (cursor_control)
X	      transmit_functions(ON);	/* insurance */
X	  }
X
X	  prompt("Command: ");
X
X	  CleartoEOLN();
X	  ch = GetPrompt();
X	  CleartoEOS();
X#ifdef DEBUG
X	  if (! movement_command(ch))
X	    dprint(4, (debugfile, "\nCommand: %c [%d]\n\n", ch, ch));
X#endif
X
X	  set_error("");	/* clear error buffer */
X
X	  MoveCursor(LINES-3,strlen("Command: "));
X
X	  switch (ch) {
X
X	    case '?' 	:  if (help(FALSE))
X	  		     redraw++;
X			   else
X			     nufoot++;
X			   break;
X
X	    case '$'    :  PutLine0(LINES-3, strlen("Command: "),
X	    		     "Resynchronize folder");
X			   redraw = resync();
X			   break;
X
Xnext_page:
X	    case '+'	:  /* move to next page if we're not on the last */
X			   if((selected &&
X			     ((header_page+1)*headers_per_page < selected))
X			   ||(!selected &&
X			     ((header_page+1)*headers_per_page<message_count))){
X
X			     header_page++;
X			     nucurr = NEW_PAGE;
X
X			     if(move_when_paged) {
X			       /* move to first message of new page */
X			       if(selected)
X				 current = visible_to_index(
X				   header_page * headers_per_page + 1) + 1;
X			       else
X				 current = header_page * headers_per_page + 1;
X			     }
X			   } else error("Already on last page.");
X			   break;
X
Xprev_page:
X	    case '-'	:  /* move to prev page if we're not on the first */
X			   if(header_page > 0) {
X			     header_page--;
X			     nucurr = NEW_PAGE;
X
X			     if(move_when_paged) {
X			       /* move to first message of new page */
X			       if(selected)
X				 current = visible_to_index(
X				   header_page * headers_per_page + 1) + 1;
X			       else
X				 current = header_page * headers_per_page + 1;
X			     }
X			   } else error("Already on first page.");
X			   break;
X
Xfirst_msg:
X	    case '='    :  if (selected)
X			     current = visible_to_index(1)+1;
X			   else
X			     current = 1;
X			   nucurr = get_page(current);
X			   break;
X
Xlast_msg:
X	    case '*'    :  if (selected) 
X			     current = (visible_to_index(selected)+1);
X			   else
X			     current = message_count;	
X			   nucurr = get_page(current);
X			   break;
X
X	    case '|'    :  Writechar('|'); 
X			   if (message_count < 1) {
X			     error("No mail to pipe!");
X			     fflush(stdin);
X			   } else {
X	    		     softkeys_off();
X                             redraw = do_pipe();		
X			     softkeys_on();
X			   }
X			   break;
X
X#ifdef ALLOW_SUBSHELL
X	    case '!'    :  Writechar('!'); 
X                           redraw = subshell();		
X			   break;
X#endif
X
X	    case '%'    :  if (current > 0) {
X			     get_return(address, current-1);
X			     clear_error();
X			     PutLine1(LINES,(COLUMNS-strlen(address))/2,
X				      "%.78s", address);	
X			   } else {
X			     error("No mail to get return address of!"); 
X			     fflush(stdin);
X			   }
X			   break;
X
X	    case '/'    :  if (pattern_match())
X			     nucurr = get_page(current);
X			   else {
X			      error("pattern not found!");
X			      fflush(stdin);
X			   }
X			   break;
X
X	    case '<'    :  /* scan current message for calendar information */
X#ifdef ENABLE_CALENDAR
X			   if  (message_count < 1) {
X			     error("No mail to scan!");
X			     fflush(stdin);
X			   }
X			   else {
X			       PutLine0(LINES-3, strlen("Command: "), 	
X				   "Scan message for calendar entries...");
X			       scan_calendar();
X			   }
X#else
X	 		   error("Sorry. Calendar function disabled.");
X			   fflush(stdin);
X#endif
X			   break;
X
X	    case 'a'    :  if(alias()) redraw++;
X			   else nufoot++; 	
X			   define_softkeys(MAIN); 	break;
X			
X	    case 'b'    :  PutLine0(LINES-3, strlen("Command: "), 
X			     "Bounce message");
X			   fflush(stdout);
X			   if (message_count < 1) {
X	  		     error("No mail to bounce!");
X			     fflush(stdin);
X			   }
X			   else 
X			     nufoot = remail();
X			   break;
X
X	    case 'c'    :  PutLine0(LINES-3, strlen("Command: "), 
X			      "Change folder");
X			   define_softkeys(CHANGE);
X			   redraw = change_file();
X			   define_softkeys(MAIN);
X			   break;
X
X	    case ctrl('D') :
X	    case '^'    :
X	    case 'd'    :  if (message_count < 1) {
X			     error("No mail to delete!");
X			     fflush(stdin);
X			   }
X			   else {
X			     if(ch == ctrl('D')) {
X
X			       /* if current message did not become deleted,
X				* don't to move to the next undeleted msg. */
X			       if(!meta_match(DELETED)) break;
X
X			     } else 
X 			       delete_msg((ch == 'd'), TRUE);
X
X			     if (resolve_mode) 	/* move after mail resolved */
X			       if((i=next_message(current-1, TRUE)) != -1) {
X				 current = i+1;
X				 nucurr = get_page(current);
X			       }
X			   }
X			   break;
X
X
X#ifdef ALLOW_MAILBOX_EDITING
X	    case 'e'    :  PutLine0(LINES-3,strlen("Command: "),"Edit folder");
X			   if (current > 0) {
X			     edit_mailbox();
X	    		     if (cursor_control)
X			       transmit_functions(ON);	/* insurance */
X	   		   }
X			   else {
X			     error("Folder is empty!");
X			     fflush(stdin);
X			   }
X			   break;
X#else
X	    case 'e'    : error(
X		    "Folder editing isn't configured in this version of ELM.");
X			  fflush(stdin);
X			  break;
X#endif
X		
X	    case 'f'    :  PutLine0(LINES-3, strlen("Command: "), "Forward");
X			   define_softkeys(YESNO);
X			   if (current > 0) {
X			     if(forward()) redraw++;
X			     else nufoot++;
X			   } else {
X			     error("No mail to forward!");
X			     fflush(stdin);
X			   }
X			   define_softkeys(MAIN);
X			   break;
X
X	    case 'g'    :  PutLine0(LINES-3,strlen("Command: "), "Group reply");
X			   fflush(stdout);
X			   if (current > 0) {
X			     if (headers[current-1]->status & FORM_LETTER) {
X			       error("Can't group reply to a Form!!");
X			       fflush(stdin);
X			     }
X			     else {
X			       define_softkeys(YESNO);
X			       redraw = reply_to_everyone();	
X			       define_softkeys(MAIN);
X			     }
X			   }
X			   else {
X			     error("No mail to reply to!"); 
X			     fflush(stdin);
X			   }
X			   break;
X
X	    case 'h'    :  if (filter)
X			     PutLine0(LINES-3, strlen("Command: "), 
X				"Message with headers...");
X			   else
X			     PutLine0(LINES-3, strlen("Command: "),"Display message");
X			   if(current > 0) {
X			     fflush(stdout);
X			     j = filter;
X			     filter = FALSE;
X			     i = show_msg(current);
X			     while (i)
X				i = process_showmsg_cmd(i);
X			     filter = j;
X			     redraw++;
X			     (void)get_page(current);
X			   } else error("No mail to read!");
X			   break;
X
X	    case 'J'    :  if(current > 0) {
X			     if((i=next_message(current-1, FALSE)) != -1) {
X			       current = i+1;
X			       nucurr = get_page(current);
X			     } else error("No more messages below.");
X			   } else error("No mail in folder!");
X			   break;
X
Xnext_undel_msg:
X	    case 'j'    :  if(current > 0) {
X			     if((i=next_message(current-1, TRUE)) != -1) {
X			       current = i+1;
X			       nucurr = get_page(current);
X			     } else error("No more undeleted messages below.");
X			   } else error("No mail in folder!");
X			   break;
X
X	    case 'K'    :  if(current > 0) {
X			     if((i=prev_message(current-1, FALSE)) != -1) {
X			       current = i+1;
X			       nucurr = get_page(current);
X			     } else error("No more messages above.");
X			   } else error("No mail in folder!");
X			   break;
X
Xprev_undel_msg:
X	    case 'k'    :  if(current > 0) {
X			     if((i=prev_message(current-1, TRUE)) != -1) {
X			       current = i+1;
X			       nucurr = get_page(current);
X			     } else error("No more undeleted messages above.");
X			   } else error("No mail in folder!");
X			   break;
X
X	    case 'l'    :  PutLine0(LINES-3, strlen("Command: "),
X				   "Limit displayed messages by...");
X			   clear_error();
X			   if (limit() != 0) {
X			     get_page(current);
X			     redraw++;
X			   } else {
X			     nufoot++;
X			   }
X			   break;
X
X	    case 'm'    :  PutLine0(LINES-3, strlen("Command: "), "Mail");
X			   redraw = sendmsg("", "", "", TRUE,allow_forms,FALSE); 
X			   break;
X
X	    case ' '    : 
X	    case ctrl('J'):
X	    case ctrl('M'):PutLine0(LINES-3, strlen("Command: "), 
X	    		      "Display message");	
X			   fflush(stdout);
X			   if(current > 0 ) {
X			     define_softkeys(READ);
X
X			     i = show_msg(current);
X			     while (i)
X				i = process_showmsg_cmd(i);
X			     redraw++;
X			     (void)get_page(current);
X			   }else error ("No mail to read!");
X			   break;
X
X	    case 'n'    :  PutLine0(LINES-3,strlen("Command: "),"Next Message");
X			   fflush(stdout);
X			   define_softkeys(READ);
X
X			   if(current > 0 ) {
X			     define_softkeys(READ);
X
X			     i = show_msg(current);
X			     while (i)
X			       i = process_showmsg_cmd(i);
X			     redraw++;
X			     if (++current > message_count)
X			       current = message_count;
X			     (void)get_page(current);
X			   }else error ("No mail to read!");
X			   break;
X
X	    case 'o'    :  PutLine0(LINES-3, strlen("Command: "), "Options");
X			   if((i=options()) > 0)
X			     get_page(current);
X			   else if(i < 0)
X			     leave();
X			   redraw++;	/* always fix da screen... */
X			   break;
X
X	    case 'p'    :  PutLine0(LINES-3, strlen("Command: "), "Print mail");
X			   fflush(stdout);
X			   if (message_count < 1) {
X			     error("No mail to print!");
X			     fflush(stdin);
X			   }
X			   else
X			     print_msg();			
X			   break;
X
X	    case 'q'    :  PutLine0(LINES-3, strlen("Command: "), "Quit");
X
X			   if (mailfile_size != bytes(cur_folder)) {
X			     error("New Mail!  Quit cancelled...");
X			     fflush(stdin);
X	  		     if (folder_type == SPOOL) unlock();
X			   }
X			   else
X			     quit(TRUE);		
X
X			   break;
X
X	    case 'Q'    :  PutLine0(LINES-3, strlen("Command: "), "Quick quit");
X
X			   if (mailfile_size != bytes(cur_folder)) {
X			     error("New Mail!  Quick Quit cancelled...");
X	  		     if (folder_type == SPOOL) unlock();
X			   }
X			   else
X			     quit(FALSE);		
X
X			   break;
X
X	    case 'r'    :  PutLine0(LINES-3, strlen("Command: "), 
X			      "Reply to message");
X			   if (current > 0) 
X			     redraw = reply();	
X			   else {
X			     error("No mail to reply to!"); 
X			     fflush(stdin);
X			   }
X			   softkeys_on();
X			   break;
X
X	    case '>'    : /** backwards compatibility **/
X
X	    case 'C'	:
X	    case 's'    :  if  (message_count < 1) {
X			     error1("No mail to %s!",
X			       ch != 'C' ? "save" : "copy");
X			     fflush(stdin);
X			   }
X			   else {
X			     PutLine1(LINES-3, strlen("Command: "),
X				      "%s to folder",
X				      ch != 'C' ? "Save" : "Copy");
X			     PutLine0(LINES-3,COLUMNS-40,
X				"(Use '?' to list your folders)");
X			     if (save(&redraw, FALSE, (ch != 'C'))
X				 && resolve_mode && ch != 'C') {
X			       if((i=next_message(current-1, TRUE)) != -1) {
X				 current = i+1;
X				 nucurr = get_page(current);
X			       }
X			     }
X			   }
X			   ClearLine(LINES-2);		
X			   break;
X
X            case ctrl('T') :
X	    case 't'       :  if (message_count < 1) {
X				error("No mail to tag!");
X				fflush(stdin);
X			      }
X			      else if (ch == 't')
X				tag_message(TRUE); 
X			      else
X				meta_match(TAGGED);
X			      break;
X
X	    case 'u'    :  if (message_count < 1) {
X			     error("No mail to mark as undeleted!");
X			     fflush(stdin);
X			   }
X			   else {
X			     undelete_msg(TRUE);
X			     if (resolve_mode) 	/* move after mail resolved */
X			       if((i=next_message(current-1, FALSE)) != -1) {
X				 current = i+1;
X				 nucurr = get_page(current);
X			       }
X/*************************************************************************
X **  What we've done here is to special case the "U)ndelete" command to
X **  ignore whether the next message is marked for deletion or not.  The
X **  reason is obvious upon usage - it's a real pain to undelete a series
X **  of messages without this quirk.  Thanks to Jim Davis @ HPLabs for
X **  suggesting this more intuitive behaviour.
X **
X **  The old way, for those people that might want to see what the previous
X **  behaviour was to call next_message with TRUE, not FALSE.
X**************************************************************************/
X			   }
X			   break;
X
X	    case ctrl('U') : if (message_count < 1) {
X			       error("No mail to undelete!");
X			       fflush(stdin);
X			     }
X			     else 
X			       meta_match(UNDELETE);
X			     break;
X
X	    case 'X'    :  PutLine0(LINES-3, strlen("Command: "), "Quick Exit");
X                           fflush(stdout);
X			   leave();
X			   break;
X
X	    case ctrl('Q') :
X	    case 'x'    :  PutLine0(LINES-3, strlen("Command: "), "Exit");  
X                           fflush(stdout);
X			   exit_prog();
X			   break;
X
X	    case ctrl('L') : redraw++;	break;
X
X            case EOF :  leave();  /* Read failed, control tty died? */
X                        break;
X	    
X	    case '@'    : debug_screen();  redraw++;	break;
X	
X	    case '#'    : if (message_count) {
X			    debug_message(); 
X			    redraw++;	
X			  } 
X			  else {
X			    error("No mail to check.");
X			    fflush(stdin);
X			  }
X			  break;
X
X	    case NO_OP_COMMAND : break;	/* noop for timeout loop */
X
X	    case ESCAPE : if (cursor_control) {
X			    key_offset = 1;
X			    ch = ReadCh(); 
X  
X                            if ( ch == '[' || ch == 'O')
X                            {
X                              ch = ReadCh();
X                              key_offset++;
X                            }
X  
X			    if(ch == up[key_offset]) goto prev_undel_msg;
X			    else if(ch == down[key_offset]) goto next_undel_msg;
X			    else if(ch == right[key_offset]) goto next_page;
X			    else if(ch == left[key_offset]) goto prev_page;
X			    else if (hp_terminal) {
X			      switch (ch) {
X			      case 'U':		goto next_page;
X			      case 'V':		goto prev_page;
X			      case 'h': 	
X			      case 'H':		goto first_msg;
X			      case 'F':		goto last_msg;
X			      case 'A':
X			      case 'D':
X			      case 'i':		goto next_undel_msg;
X			      case 'B':
X			      case 'I':
X			      case 'C':		goto prev_undel_msg;
X			      default: PutLine2(LINES-3, strlen("Command: "), 
X					"%c%c", ESCAPE, ch);
X			      }
X			    } else /* false hit - output */
X			      PutLine2(LINES-3, strlen("Command: "), 
X					  "%c%c", ESCAPE, ch);
X			  }
X
X			  /* else fall into the default error message! */
X
X	    default	: if (ch > '0' && ch <= '9') {
X			    PutLine0(LINES-3, strlen("Command: "), 
X				    "New Current Message");
X			    i = read_number(ch);
X
X			    if( i > message_count)
X			      error("Not that many messages.");
X			    else if(selected
X				&& isoff(headers[i-1]->status, VISIBLE))
X			      error("Message not in limited display.");
X			    else {
X			      current = i;
X			      nucurr = get_page(current);
X			    }
X			  }
X			  else {
X	 		    error("Unknown command. Use '?' for help.");
X			    fflush(stdin);
X			  }
X	  }
X
X	  if (redraw)
X	    showscreen();
X
X	  if ((current < 1) || (selected && compute_visible(current) < 1)) {
X	    if (message_count > 0) {
X	      /* We are out of range! Get to first message! */
X	      if (selected)
X		current = compute_visible(1);
X	      else
X		current = 1;
X	    }
X	    else
X	      current = 0;
X	  }
X	  else if ((current > message_count)
X	       || (selected && compute_visible(current) > selected)) {
X	    if (message_count > 0) {
X	      /* We are out of range! Get to last (visible) message! */
X	      if (selected)
X		current = visible_to_index(selected)+1;
X	      else
X		current = message_count;
X	    }
X	    else
X	      current = 0;
X	  }
X	    
X	  if (nucurr == NEW_PAGE) 
X	    show_headers();
X	  else if (nucurr == SAME_PAGE)
X	    show_current();
X	  else if (nufoot) {
X	    if (mini_menu) {
X	      MoveCursor(LINES-7, 0);  
X              CleartoEOS();
X	      show_menu();
X	    }
X	    else {
X	      MoveCursor(LINES-4, 0);
X	      CleartoEOS();
X	    }
X	    show_last_error();	/* for those operations that have to
X				 * clear the footer except for a message.
X				 */
X	  }
X
X	} /* the BIG while loop! */
X}
X
Xdebug_screen()
X{
X	/**** spit out all the current variable settings and the table
X	      entries for the current 'n' items displayed. ****/
X
X	register int i, j;
X	char     buffer[SLEN];
X
X	ClearScreen();
X	Raw(OFF);
X
X	PutLine2(0,0,"Current message number = %d\t\t%d message(s) total\n",
X		current, message_count);
X	PutLine2(2,0,"Header_page = %d           \t\t%d possible page(s)\n",
X		header_page, (int) (message_count / headers_per_page) + 1);
X
X	PutLine1(4,0,"\nCurrent mailfile is %s.\n\n", cur_folder);
X
X	i = header_page*headers_per_page;	/* starting header */
X
X	if ((j = i + (headers_per_page-1)) >= message_count) 
X	  j = message_count-1;
X
X	Write_to_screen(
X"Num      From                 	Subject                         Lines  Offset\n\r\n\r",0);
X
X	while (i <= j) {
X	   sprintf(buffer, 
X	   "%3d  %-16.16s  %-40.40s  %4d  %d\n\r",
X		    i+1,
X		    headers[i]->from, 
X		    headers[i]->subject,
X		    headers[i]->lines,
X		    headers[i]->offset);
X	    Write_to_screen(buffer, 0);
X	  i++;
X	}
X	
X	Raw(ON);
X
X	PutLine0(LINES,0,"Press any key to return.");
X	(void) ReadCh();
X}
X
X
Xdebug_message()
X{
X	/**** Spit out the current message record.  Include EVERYTHING
X	      in the record structure. **/
X	
X	char buffer[SLEN];
X	register struct header_rec *current_header = headers[current-1];
X
X	ClearScreen();
X	Raw(OFF);
X
X	Write_to_screen("\t\t\t----- Message %d -----\n\r\n\r\n\r\n\r", 1,
X		current);
X
X	Write_to_screen("Lines : %-5d\t\t\tStatus: A  C  D  E  F  N  O  P  T  U  V\n\r", 1,
X		current_header->lines);
X	Write_to_screen("            \t\t\t        c  o  e  x  o  e  l  r  a  r  i\n\r", 0);
X	Write_to_screen("            \t\t\t        t  n  l  p  r  w  d  i  g  g  s\n\r", 0);
X	Write_to_screen("            \t\t\t        n  f  d  d  m        v  d  n  i\n\r", 0);
X
X	sprintf(buffer, 
X		"\n\rOffset: %ld\t\t\t        %d  %d  %d  %d  %d",
X		current_header->offset,
X		(current_header->status & ACTION) != 0,
X		(current_header->status & CONFIDENTIAL) != 0,
X		(current_header->status & DELETED) != 0,
X		(current_header->status & EXPIRED) != 0,
X		(current_header->status & FORM_LETTER) != 0);
X	sprintf(buffer + strlen(buffer),
X		"  %d  %d  %d  %d  %d  %d\n",
X		(current_header->status & NEW) != 0,
X		(current_header->status & UNREAD) != 0,
X		(current_header->status & PRIVATE) != 0,
X		(current_header->status & TAGGED) != 0,
X		(current_header->status & URGENT) != 0,
X		(current_header->status & VISIBLE) != 0);
X
X	Write_to_screen(buffer, 0);
X
X	sprintf(buffer, "\n\rReceived on: %d/%d/%d at %d:%02d\n\r",
X		current_header->received.month+1,
X		current_header->received.day,
X		current_header->received.year,
X		current_header->received.hour,
X		current_header->received.minute);
X	Write_to_screen(buffer, 0);
X
X	sprintf(buffer, "Message sent on: %s, %s %s, %s at %s\n\r",
X		current_header->dayname,
X		current_header->month,
X		current_header->day,
X		current_header->year,
X		current_header->time);
X	Write_to_screen(buffer, 0);
X	
X	Write_to_screen("From: %s\n\rSubject: %s", 2,
X		current_header->from,
X		current_header->subject);
X
X	Write_to_screen("\n\rPrimary Recipient: %s\nInternal Index Reference Number = %d\n\r", 2,
X		current_header->to,
X		current_header->index_number);
X
X	Write_to_screen("Message-ID: %s\n\r", 1,
X		strlen(current_header->messageid) > 0 ? 
X		current_header->messageid : "<none>");
X
X	Write_to_screen("Status: %s\n\r", 1, current_header->mailx_status);
X	
X	Raw(ON);
X
X	PutLine0(LINES,0,"Please Press any key to return.");
X	(void) ReadCh();
X}
X
Xdo_check_only(to_whom)
Xchar *to_whom;
X	{
X	char buffer[VERY_LONG_STRING];
X
X	dprint(3, (debugfile, "Check-only: checking \n-> \"%s\"\n", 
X		format_long(to_whom, 3)));
X	(void) build_address(strip_commas(to_whom), buffer); 
X	printf("Expands to: %s", format_long(buffer, strlen("Expands to: ")));
X	}
SHAR_EOF
chmod 0444 src/elm.c || echo "restore of src/elm.c fails"
echo "x - extracting src/encode.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/encode.c &&
X
Xstatic char rcsid[] = "@(#)$Id: encode.c,v 4.1 90/04/28 22:42:57 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 *	elm@DSI.COM			dsinc!elm
X *
X *******************************************************************************
X * $Log:	encode.c,v $
X * Revision 4.1  90/04/28  22:42:57  syd
X * checkin of Elm 2.3 as of Release PL0
X * 
X *
X ******************************************************************************/
X
X/** This is a heavily mangled version of the 'cypher' program written by
X    person or persons unknown.  
X
X**/
X
X#include "headers.h"
X
X#define RS	94
X#define RN	4
X#define RMASK	0x7fff	/* use only 15 bits */
X
Xstatic char r[RS][RN];		/* rotors */
Xstatic char ir[RS][RN];		/* inverse rotors */
Xstatic char h[RS];		/* half rotor */
Xstatic char s[RS];		/* shuffle vector */
Xstatic int  p[RN];		/* rotor indices */
X
Xstatic char the_key[SLEN];	/* unencrypted key */
Xstatic char *encrypted_key;	/* encrypted key   */
X
Xchar *strncpy(), *strcpy();
Xunsigned long sleep();
X
X#define DECRYPT_PROMPT		"Enter decryption key: "
X#define FIRST_ENC_PROMPT	"Enter encryption key: "
X#define SECOND_ENC_PROMPT	"Please enter it again: "
X#define PROMPT_LINE		LINES-1
X
Xgetkey(send)
Xint send;
X{
X	/** this routine prompts for and returns an encode/decode
X	    key for use in the rest of the program. **/
X
X	char buffer[2][NLEN];
X
X	while (1) {
X	  PutLine0(PROMPT_LINE, 0, (send ? FIRST_ENC_PROMPT : DECRYPT_PROMPT));
X	  CleartoEOLN();
X	  optionally_enter(buffer[0], PROMPT_LINE,
X	    strlen(send ? FIRST_ENC_PROMPT : DECRYPT_PROMPT), FALSE, TRUE);
X	  if (send) {
X	    PutLine0(PROMPT_LINE, 0, SECOND_ENC_PROMPT);
X	    CleartoEOLN();
X	    optionally_enter(buffer[1], PROMPT_LINE, strlen(SECOND_ENC_PROMPT),
X	      FALSE, TRUE);
X	    if(strcmp(buffer[0], buffer[1]) != 0) {
X	      error("Your keys were not the same!");
X	      sleep(1);
X	      clear_error();
X	      continue;
X	    }
X	  }
X	  break;
X	}
X        strcpy(the_key, buffer[0]);	/* save unencrypted key */
X	makekey(buffer[0]);
X
X	setup();		/** initialize the rotors etc. **/
X
X	ClearLine(PROMPT_LINE);		
X	clear_error();
X}
X
Xget_key_no_prompt()
X{
X	/** This performs the same action as get_key, but assumes that
X	    the current value of 'the_key' is acceptable.  This is used
X	    when a message is encrypted twice... **/
X
X	char buffer[SLEN];
X
X	strcpy(buffer, the_key);
X
X	makekey( buffer );
X
X	setup();
X}
X
Xencode(line)
Xchar *line;
X{
X	/** encrypt or decrypt the specified line.  Uses the previously
X	    entered key... **/
X
X	register int i, j, ph = 0;
X
X	for (; *line; line++) {
X	  i = (int) *line;
X
X	  if ( (i >= ' ') && (i < '~') ) {
X	    i -= ' ';
X
X	    for ( j = 0; j < RN; j++ )		/* rotor forwards */
X	      i = r[(i+p[j])%RS][j];
X
X	    i = ((h[(i+ph)%RS])-ph+RS)%RS;	/* half rotor */
X
X	    for ( j--  ; j >= 0; j-- )		/* rotor backwards */
X	      i = (ir[i][j]+RS-p[j])%RS;
X
X	    j = 0;				/* rotate rotors */
X	    p[0]++;
X	    while ( p[j] == RS ) {
X	      p[j] = 0;
X	      j++;
X	      if ( j == RN ) break;
X	      p[j]++;
X            }
X  
X	    if ( ++ph == RS )
X	      ph = 0;
X
X	    i += ' ';
X	  }
X	  
X	  *line = (char) i;	/* replace with altered one */
X	}
X}
X
X
Xmakekey( rkey)
Xchar *rkey;
X{
X	/** encrypt the key using the system routine 'crypt' **/
X
X	char key[9], salt[2], *crypt();
X
X	strncpy( key, rkey, 8);
X	key[8] = '\0';
X	salt[0] = key[0];
X	salt[1] = key[1];
X#ifdef CRYPT
X	encrypted_key = crypt( key, salt);
X#else
X	encrypted_key = key;
X#endif
X}
X
X/*
X * shuffle rotors.
X * shuffle each of the rotors indiscriminately.  shuffle the half-rotor
X * using a special obvious and not very tricky algorithm which is not as
X * sophisticated as the one in crypt(1) and Oh God, I'm so depressed.
X * After all this is done build the inverses of the rotors.
X */
X
Xsetup()
X{
X	register long i, j, k, temp;
X	long seed;
X
X	for ( j = 0; j < RN; j++ ) {
X		p[j] = 0;
X		for ( i = 0; i < RS; i++ )
X			r[i][j] = i;
X	}
X
X	seed = 123;
X	for ( i = 0; i < 13; i++)		/* now personalize the seed */
X	  seed = (seed*encrypted_key[i] + i) & RMASK;
X
X	for ( i = 0; i < RS; i++ )		/* initialize shuffle vector */
X	  h[i] = s[i] = i;
X
X	for ( i = 0; i < RS; i++) {		/* shuffle the vector */
X	  seed = (5 * seed + encrypted_key[i%13]) & RMASK;;
X	  k = ((seed % 65521) & RMASK) % RS;
X	  temp = s[k];
X	  s[k] = s[i];
X	  s[i] = temp;
X	}
X
X	for ( i = 0; i < RS; i += 2 ) {	/* scramble the half-rotor */
X	  temp = h[s[i]];			/* swap rotor elements ONCE */
X	  h[s[i]] = h[s[i+1]];
X	  h[s[i+1]] = temp;
X	}
X
X	for ( j = 0; j < RN; j++) {			/* select a rotor */
X
X	  for ( i = 0; i < RS; i++) {		/* shuffle the vector */
X	    seed = (5 * seed + encrypted_key[i%13]) & RMASK;;
X	    k = ((seed % 65521) & RMASK) % RS;
X	    temp = r[i][j];
X	    r[i][j] = r[k][j];
X	    r[k][j] = temp;
X	  }
X
X	  for ( i = 0; i < RS; i++) 		/* create inverse rotors */
X	    ir[r[i][j]][j] = i;
X       }
X}
SHAR_EOF
chmod 0444 src/encode.c || echo "restore of src/encode.c fails"
echo "x - extracting src/errno.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/errno.c &&
X
Xstatic char rcsid[] = "@(#)$Id: errno.c,v 4.1 90/04/28 22:42:58 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 *	elm@DSI.COM			dsinc!elm
X *
X *******************************************************************************
X * $Log:	errno.c,v $
X * Revision 4.1  90/04/28  22:42:58  syd
X * checkin of Elm 2.3 as of Release PL0
X * 
X *
X ******************************************************************************/
X
X/** This routine maps error numbers to error names and error messages.
X    These are all directly ripped out of the include file errno.h, and
X    are HOPEFULLY standardized across the different breeds of Unix!!
X
X    If (alas) yours are different, you should be able to use awk to
X    mangle your errno.h file quite simply...
X
X**/
X
X#include "headers.h"
X
Xchar *err_name[] = { 
X/* 0 */	        "NOERROR", "No error status currently",
X/* 1 */		"EPERM",   "Not super-user",
X/* 2 */		"ENOENT",  "No such file or directory",
X/* 3 */		"ESRCH",   "No such process",
X/* 4 */		"EINTR",   "Interrupted system call",
X/* 5 */		"EIO",     "I/O error",
X/* 6 */		"ENXIO",   "No such device or address",
X/* 7 */		"E2BIG",   "Arg list too long",
X/* 8 */		"ENOEXEC", "Exec format error",
X/* 9 */		"EBADF",   "Bad file number",
X/* 10 */	"ECHILD",  "No children",
X/* 11 */	"EAGAIN",  "No more processes",
X/* 12 */	"ENOMEM",  "Not enough core",
X/* 13 */	"EACCES",  "Permission denied",
X/* 14 */	"EFAULT",  "Bad address",
X/* 15 */	"ENOTBLK", "Block device required",
X/* 16 */	"EBUSY",   "Mount device busy",
X/* 17 */	"EEXIST",  "File exists",
X/* 18 */	"EXDEV",   "Cross-device link",
X/* 19 */	"ENODEV",  "No such device",
X/* 20 */	"ENOTDIR", "Not a directory",
X/* 21 */	"EISDIR",  "Is a directory",
X/* 22 */	"EINVAL",  "Invalid argument",
X/* 23 */	"ENFILE",  "File table overflow",
X/* 24 */	"EMFILE",  "Too many open files",
X/* 25 */	"ENOTTY",  "Not a typewriter",
X/* 26 */	"ETXTBSY", "Text file busy",
X/* 27 */	"EFBIG",   "File too large",
X/* 28 */	"ENOSPC",  "No space left on device",
X/* 29 */	"ESPIPE",  "Illegal seek",
X/* 30 */	"EROFS",   "Read only file system",
X/* 31 */	"EMLINK",  "Too many links",
X/* 32 */	"EPIPE",   "Broken pipe",
X/* 33 */	"EDOM",    "Math arg out of domain of func",
X/* 34 */	"ERANGE",  "Math result not representable",
X/* 35 */	"ENOMSG",  "No message of desired type",
X/* 36 */	"EIDRM",   "Identifier removed"
X	};
X
Xchar *strcpy();
X
Xchar *error_name(errnumber)
Xint errnumber;
X{
X	static char buffer[50];
X
X	if (errnumber < 0 || errnumber > 36) 
X	  sprintf(buffer,"ERR-UNKNOWN (%d)", errnumber);
X	else
X	  strcpy(buffer, err_name[2*errnumber]);
X
X	return( (char *) buffer);
X}
X
Xchar *error_description(errnumber)
Xint errnumber;
X{
X	static char buffer[50];
X
X	if (errnumber < 0 || errnumber > 36) 
X	  sprintf(buffer,"Unknown error - %d - No description", errnumber);
X	else
X	  strcpy(buffer, err_name[2*errnumber + 1]);
X
X	return ( (char *) buffer);
X}
SHAR_EOF
chmod 0444 src/errno.c || echo "restore of src/errno.c fails"
echo "x - extracting src/exitprog.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/exitprog.c &&
X
Xstatic char rcsid[] = "@(#)$Id: exitprog.c,v 4.1 90/04/28 22:43:00 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 *	elm@DSI.COM			dsinc!elm
X *
X *******************************************************************************
X * $Log:	exitprog.c,v $
X * Revision 4.1  90/04/28  22:43:00  syd
X * checkin of Elm 2.3 as of Release PL0
X * 
X *
X ******************************************************************************/
X
X#include "headers.h"
X
Xint
Xexit_prog()
X{
X	/** Exit, abandoning all changes to the mailbox (if there were
X	    any, and if the user say's it's ok)
X	**/
X
X	char buffer[SLEN], answer;
X	register int i, changes;
X
X	dprint(1, (debugfile, "\n\n-- exiting --\n\n"));
X
X	/* Determine if any messages are scheduled for deletion, or if
X	 * any message has changed status
X	 */
X	for (changes = 0, i = 0; i < message_count; i++)
X	  if (ison(headers[i]->status, DELETED) || headers[i]->status_chgd)
X	    changes++;
X	
X	if (changes) {
X	  /* YES or NO on softkeys */
X	  if (hp_softkeys) {
X	    define_softkeys(YESNO);
X	    softkeys_on();
X	  }
X	  sprintf(buffer,"Abandon change%s to mailbox? (y/n) ",plural(changes));
X	  answer = want_to(buffer, 'n');
X
X	  if(answer != 'y') return -1;
X	}
X
X	fflush(stdout);
X	return leave(0);
X}
SHAR_EOF
chmod 0444 src/exitprog.c || echo "restore of src/exitprog.c fails"
echo "x - extracting src/expires.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/expires.c &&
X
Xstatic char rcsid[] = "@(#)$Id: expires.c,v 4.1 90/04/28 22:43:01 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 *	elm@DSI.COM			dsinc!elm
X *
X *******************************************************************************
X * $Log:	expires.c,v $
X * Revision 4.1  90/04/28  22:43:01  syd
X * checkin of Elm 2.3 as of Release PL0
X * 
X *
X ******************************************************************************/
X
X/** This routine is written to deal with the Expires: header on the
X    individual mail coming in.  What it does is to look at the date,
X    compare it to todays date, then set the EXPIRED flag on the
X    current message if it is true...
X**/
X
X#include "headers.h"
X
X#ifdef I_TIME
X#  include <time.h>
X#endif
X#ifdef I_SYSTIME
X#  include <sys/time.h>
X#endif
X
X#include <ctype.h>
X
X#ifdef BSD
X#undef toupper
X#undef tolower
X#endif
X
Xprocess_expiration_date(date, message_status)
Xchar *date;
Xint  *message_status;
X{
X	struct tm *timestruct;
X	long thetime;
X	char word1[WLEN], word2[WLEN], word3[WLEN], word4[WLEN], word5[WLEN];
X	int  month = 0, day = 0, year = 0, hour = 0, minute = 0;
X#ifndef	_POSIX_SOURCE
X	struct tm *localtime();
X	long time();
X#endif
X
X	/** first step is to break down the date given into MM DD YY HH MM
X	    format:  The possible formats for this field are, by example:
X	
X		(1) Mon, Jun 11, 87
X		(2) Mon, 11 Jun 87
X		(3) Jun 11, 87
X		(4) 11 Jun 87
X		(5) 11/06/87	<- ambiguous - will be ignored!!
X		(6) 8711061248GMT
X		(7) Mon, Jun 11, 87 12:48:35 GMT
X
X	    The reason #5 is considered ambiguous will be made clear
SHAR_EOF
echo "End of part 14"
echo "File src/expires.c is continued in part 15"
echo "15" > s2_seq_.tmp
exit 0

exit 0 # Just in case...
-- 
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