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1994-09-27
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1,199 lines
#!///////////////////////////////////////////////////////////////////////////usr/STAGE/bin/perl
## (Change the top line to reflect the location of perl on your system)
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## cmail $Revision: 2.10 $: a tool to aid playing chess by email
## Copyright (C) 1993 Free Software Foundation, Inc.
##
## cmail is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## cmail is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with cmail; if not, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
##
## Modified: $Date: 1994/05/31 18:35:21 $
## Revision: $Revision: 2.10 $
## Email: welsh@epcc.ed.ac.uk
## Snailmail: Evan Welsh
## Edinburgh Parallel Computing Centre
## JCMB, Kings Buildings
## The University of Edinburgh
## Edinburgh EH9 3JZ
## Scotland
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Print verbose diagnostics for debugging
sub debug {
if ($DEBUG) {
$old = select ; ## Remember the selected output
select(logfile) ; ## Diagnostics go to logfile
$| = 1 ; ## Keep it flushed
for ($i = 0 ; $i <= $#_ ; $i ++) {
printf($_[$i]) ; ## Print one or more diagnostic messages
}
select($old) ; ## Re-select the old output
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Create a directory for storing games in if it doesn't already exist
sub need_chess_dir {
## ################################################################# ##
## Check for existence of the named chess directory
## ################################################################# ##
if (! (-d "$CHESSDIR")) {
## ############################################################# ##
## Ask user for confirmation if attached to tty
## ############################################################# ##
if (-t) {
$old = select ; ## Remember selected output
select(stdout) ; ## Write to standard output
$| = 1 ; ## Keep it flushed
printf("Chess directory <$CHESSDIR> does not exist.") ;
printf(" Create it? [y/q]: ");
$_ = <tty> ; ## Read response from tty
if (/^[qQ].*/) {
die "Bye!\n" ; ## Quit if q selected
}
select($old) ; ## Re-select the old output
}
## ############################################################# ##
## Create a chess directory or die
## ############################################################# ##
die "cmail: Can't create directory: $CHESSDIR\n"
unless mkdir("$CHESSDIR", 511) ;
printf("Created chess directory <$CHESSDIR>.\n") ;
printf("You can move it but remember to set the CMAIL_DIR") ;
printf(" environment variable.\n") ;
}
## ################################################################# ##
## Change to the $CHESSDIR directory whether newly created or not
## ################################################################# ##
chdir "$CHESSDIR" ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Parse command-line arguments
sub parse_flags {
## ################################################################# ##
## Set up defaults from the environment or from hard-wired constants
## ################################################################# ##
$SHOWC = 0 ;
$SHOWW = 0 ;
$LOGFILE = "&STDERR" ;
$MAILPROG = $ENV{'CMAIL_MAILPROG'} ;
$MAILPROG = "/usr/ucb/Mail" if ( (-x "/usr/ucb/Mail")
&& (! $MAILPROG)) ;
$MAILPROG = "/usr/ucb/mail" if ( (-x "/usr/ucb/mail")
&& (! $MAILPROG)) ;
$MAILPROG = "Mail" unless ($MAILPROG) ;
printf("\$CMAIL_DIR now obsolete. Use \$CHESSDIR instead.\n")
if ($ENV{'CMAIL_DIR'}) ;
$CHESSDIR = $ENV{'CHESSDIR'} ;
$HOMEDIR = $ENV{'HOME'} ;
$CHESSDIR = "$HOMEDIR/Chess" unless ($CHESSDIR) ;
$CHESSDIR = "~/Chess" unless ($HOMEDIR) ;
$ALIAS_FILE = $ENV{'CMAIL_ALIASES'} ;
$ALIAS_FILE = ".cmailaliases" unless ($ALIAS_FILE) ;
$GAMES_FILE = $ENV{'CMAIL_GAMES'} ;
$GAMES_FILE = ".cmailgames" unless ($GAMES_FILE) ;
$TIME_DELAY = $ENV{'CMAIL_TIME_DELAY'} ;
$TIME_DELAY = 0 unless ($TIME_DELAY) ;
&get_pw_name() ;
$ME = $PW_NAME ;
$ME = $ENV{'LOGNAME'} unless ($ME) ;
$PGN_EVENT = "Email correspondence game" ;
$PGN_SITE = "NET";
$PGN_ROUND = "-";
$PGN_WHITE = "?";
$PGN_BLACK = "?";
$PGN_WHITENA = "?";
$PGN_BLACKNA = "?";
$PGN_MODE = "EM";
$SEND_MAIL = 1 ;
$LOAD_XBOARD = 1 ;
$REUSE = 1 ;
$TD_FLAGS = " -td $TIME_DELAY" ;
$NCP_FLAGS = " -ncp" ;
## ################################################################# ##
## Define the usage string
## ################################################################# ##
$USAGE = ("cmail
[-h] [-c] [-w] [-[x]v] [-[x]mail] [-[x]xboard] [-[x]reuse] [-remail]
[-game <name>] [-opp <name>] [-addr <address>] [-dir <directory>]
[-gamesFile <file>] [-aliasesFile <file>] [-logFile <file>]
[-event <event>] [-site <site>] [-round <round>] [-mode <mode>]
[-(white|black) <full name>] [-(white|black)na <email address>]
[-mailprog <mail program>]") ;
## ################################################################# ##
## Overwrite defaults if specified on the command-line
## ################################################################# ##
$UNREC_ARGS = "" ;
while ($ARGV = shift) {
$UNREC = 0 if ($ARGV =~ /^-/) ;
if ("$ARGV" eq "-h") {die("Usage: $USAGE\n") ;}
elsif ("$ARGV" eq "-c") {$SHOWC = 1 ;}
elsif ("$ARGV" eq "-w") {$SHOWW = 1 ;}
elsif ("$ARGV" eq "-v") {$DEBUG = 1 ;}
elsif ("$ARGV" eq "-xv") {$DEBUG = 0 ;
$QUIET = 1 ;}
elsif ("$ARGV" eq "-mail") {$SEND_MAIL = 1 ;}
elsif ("$ARGV" eq "-xmail") {$SEND_MAIL = 0 ;}
elsif ("$ARGV" eq "-xboard") {$LOAD_XBOARD = 1 ;}
elsif ("$ARGV" eq "-xxboard") {$LOAD_XBOARD = 0 ;}
elsif ("$ARGV" eq "-reuse") {$REUSE = 1 ;}
elsif ("$ARGV" eq "-xreuse") {$REUSE = 0 ;}
elsif ("$ARGV" eq "-remail") {$LOAD_XBOARD = 0 ;
$SEND_MAIL = 1 ;}
elsif ("$ARGV" eq "-game") {$PGN_GAME = shift ;}
elsif ("$ARGV" eq "-opp") {$OPP_NAME = shift ;}
elsif ("$ARGV" eq "-addr") {$OPP_ADDRESS = shift ;}
elsif ("$ARGV" eq "-dir") {$CHESSDIR = shift ;}
elsif ("$ARGV" eq "-mailprog") {$MAILPROG = shift ;}
elsif ("$ARGV" eq "-gamesFile") {$GAMES_FILE = shift ;}
elsif ("$ARGV" eq "-aliasesFile") {$ALIAS_FILE = shift ;}
elsif ("$ARGV" eq "-logFile") {$LOGFILE = shift ;}
elsif ("$ARGV" =~ /^-(td|timeDelay)$/)
{$TD_FLAGS = ( " $ARGV "
. shift) ;}
elsif ("$ARGV" =~ /^-noChessComputer$/)
{$NCP_FLAGS = ( " $ARGV "
. shift) ;}
elsif ("$ARGV" =~ /^-[x]?ncp$/) {$NCP_FLAGS = " $ARGV" ;}
elsif ("$ARGV" eq "-event") {$PGN_EVENT = shift ;}
elsif ("$ARGV" eq "-site") {$PGN_SITE = shift ;}
elsif ("$ARGV" eq "-round") {$PGN_ROUND = shift ;}
elsif ("$ARGV" eq "-white") {$PGN_WHITE = shift ;}
elsif ("$ARGV" eq "-black") {$PGN_BLACK = shift ;}
elsif ("$ARGV" eq "-whitena") {$PGN_WHITENA = shift ;}
elsif ("$ARGV" eq "-blackna") {$PGN_BLACKNA = shift ;}
elsif ("$ARGV" eq "-mode") {$PGN_MODE = shift ;}
elsif ("$ARGV" =~ /^-[x]?oldsave$/)
{$SAVE_FLAGS = " $ARGV" ;}
elsif ("$ARGV" eq "-oldSaveStyle"){$SAVE_FLAGS = ( " $ARGV "
. shift) ;}
elsif ("$ARGV" =~ /^-/ || $UNREC) {
$UNREC_ARGS .= " " . $ARGV ;
$UNREC = 1 ;
} else {
die("cmail: Unrecognised flag \"$ARGV\"\nUsage: $USAGE\n") ;
}
}
$ENV{'CMAIL_MAILPROG'} = $MAILPROG ; ## Propagate to cmail grandchild
$OLDSAVE = ( $SAVE_FLAGS
=~ /^ (-oldsave|-oldSaveStyle [Tt][Rr][Uu][Ee])$/) ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Initialisation of variables and environment
sub showGPL {
## ################################################################# ##
## Show copyright notice
## ################################################################# ##
while(<DATA>) {
last if(/^{END OF GPL COPYRIGHT}$/) ;
$_ =~ s/\$Revision[:] (.*) \$/$1/ ;
print ;
}
## ################################################################# ##
## Show conditions if requested
## ################################################################# ##
while(<DATA>) {
last if(/^{END OF GPL CONDITIONS}$/) ;
if($SHOWW) {
print ;
}
}
## ################################################################# ##
## Show warranty if requested
## ################################################################# ##
if ($SHOWC) {
if($SHOWW) {
printf("\n") ;
}
while(<DATA>) {
print ;
}
}
if ($SHOWC || $SHOWW) {
exit ; ## Abort if showed conditions or warranty
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Initialisation of variables and environment
sub initialise {
$FLIP = "false" ; ## The board is not flipped by default
&parse_flags(@ARGV) ; ## Parse command-line arguments
&showGPL unless $QUIET ;
open(tty, "< /dev/tty") ; ## Open tty for reading
&need_chess_dir() ; ## Check for the existence of CHESSDIR
if ($DEBUG) {
open (logfile, ">$LOGFILE") ; ## Default is STDERR
}
&debug("Called <initialise>\n") ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Prompt for a game name, if <cr> use a default
sub prompt_for_game_name {
&debug("Called <prompt_for_game_name>\n") ;
$old = select ; ## Remember the selected output
select(stdout); ## Diagnostics go to logfile
$| = 1 ; ## Keep it flushed
printf("Game name [<cr> to use default]: ") ;
die "cmail: tty not open\n" unless (-t) ;
<tty> =~ /(.*)/ ; ## Read line from tty
$PGN_GAME = "$1" ; ## Assign to game name
select($old) ; ## Re-select the old output
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get opponent's address
sub find_opp_address_in_game_file {
&debug("Called <find_opp_address_in_game_file> game name",
" <$PGN_GAME>\n") ;
if (! ("" eq "$PGN_GAME")) { ## Can't find it without the game name
## ############################################################# ##
## Open the game file and read all the entries
## ############################################################# ##
if (open(GAMES_IN, "<$GAMES_FILE")) {
while(<GAMES_IN>) {
if (/^<$PGN_GAME>\s*(.*)\s*$/) { ## Match!
$OPP_ADDRESS = $1 ; ## Found opponent's address
}
}
if ("" eq $OPP_ADDRESS) {
$SAVE_ADDRESS = 1 ; ## Save the address when it is found
}
} else { ## Game file doesn't exist yet
$SAVE_ADDRESS = 1 ; ## Save the address when it is found
}
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get game name from game file
sub find_game_in_game_file {
&debug("Called <find_game_in_game_file> opp address",
" <$OPP_ADDRESS>\n") ;
if ("" ne "$OPP_ADDRESS") { ## Can't find it without the opp address
## ############################################################# ##
## Open the game file and read all the entries
## ############################################################# ##
if (open(GAMES_IN, "< $GAMES_FILE")) {
while(<GAMES_IN>) {
if ($_ =~ /^<(.*)>\s*$OPP_ADDRESS\s*$/) {
$PGN_GAME = $1 ; ## Match!
}
}
} else {
$SAVE_ADDRESS = 1 ; ## Save the address when it is found
$PGN_GAME = "$ME-VS-$OPP_NAME" ; ## Construct default name
}
}
## ################################################################# ##
## Failed to find the game name so construct a default from players
## ################################################################# ##
if ("" eq $PGN_GAME) {
$SAVE_ADDRESS = 1 ; ## Save the address when it is found
$PGN_GAME = "$ME-VS-$OPP_NAME" ; ## Construct default name
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Prompt for opponent's address
sub prompt_for_opp_address {
&debug("Called <prompt_for_opp_address>\n") ;
## ################################################################# ##
## Prompt for opponent's email address
## ################################################################# ##
printf("Opponent's email address: ") ;
die "cmail: tty not open\n" unless (-t) ;
<tty> =~ /(.*)/ ;
$OPP_ADDRESS = $1 ;
## ################################################################# ##
## Use name as default if still blank
## ################################################################# ##
if ("" eq $OPP_ADDRESS) {
$OPP_ADDRESS = $OPP_NAME ;
}
## ################################################################# ##
## Add the alias to the alias file
## ################################################################# ##
if ($ADD_ALIAS == 1) {
printf("Adding alias <$OPP_NAME = $OPP_ADDRESS>.\n") ;
die "cmail: Can't open file: $ALIAS_FILE\n"
unless open(ALIASES_OUT, ">> $ALIAS_FILE") ;
select(ALIASES_OUT) ;
printf("$OPP_NAME\t=\t$OPP_ADDRESS\n") ;
close(ALIASES_OUT) ;
select(stdout) ;
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Prompt for opponent's name
sub prompt_for_opp_name {
&debug("Called <prompt_for_opp_name>\n") ;
$old = select ; ## Remember the selected output
select(stdout) ; ## Write to stdout
$| = 1 ; ## Keep it flushed
printf("Opponent's name: ") ;
die "cmail: tty not open\n" unless (-t) ; ## Check tty is open
<tty> =~ /(.*)/ ; ## Read line from tty
$OPP_NAME = $1 ; ## Match!
die "cmail: I can't proceed without the opponent's name.\n"
unless ($OPP_NAME) ;
select($old) ; ## Re-select the old output
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Search for opponent's name in alias file if it exists
sub find_opp_address_in_alias_file {
&debug("Called <find_opp_address_in_alias_file> opp name <$OPP_NAME>\n") ;
## ################################################################# ##
## Check the alias file exists
## ################################################################# ##
if (-f "$ALIAS_FILE") {
## ############################################################# ##
## Open alias file and read all the entries
## ############################################################# ##
die "cmail: Can't open file: $ALIAS_FILE\n"
unless open(ALIASES_IN, "< $ALIAS_FILE") ;
while (<ALIASES_IN>) {
if (/$OPP_NAME\s*=\s*(.*)/) {
$OPP_ADDRESS = $1 ; ## Match!
}
}
## ############################################################# ##
## Check if we should save the new address in the alias file
## ############################################################# ##
if ("" eq $OPP_ADDRESS) {
$ADD_ALIAS = 1 ; ## Remember to add new alias to alias file
}
close(ALIASES_IN) ; ## Close alias in file
} else {
$ADD_ALIAS = 1 ; ## Remember to add new alias to alias file
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Add this game to the list of games in the game file
sub add_game_to_game_file {
&debug("Called <add_game_to_game_file>\n") ;
## ################################################################# ##
## Append address to game file
## ################################################################# ##
if ($SAVE_ADDRESS) {
die "cmail: Can't open file: $GAMES_FILE\n" ## Open the file or die
unless open(GAMES_OUT, ">> $GAMES_FILE") ;
select(GAMES_OUT) ; ## Write to games file
printf("<$PGN_GAME> $OPP_ADDRESS\n") ; ## Make the entry
close(GAMES_OUT) ; ## Close games file
}
select(STDOUT) ; ## Re-select STDOUT
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Load the game
sub play_game {
&debug("Called <play_game>\n") ;
$| = 1 ; ## Start flushing output buffer
## ################################################################# ##
## Load xboard unless inhibited by command-line arguments
## ################################################################# ##
if ($LOAD_XBOARD) {
## ############################################################# ##
## Remove output files from previous run
## ############################################################# ##
unlink("$PGN_GAME.pos.out") ;
unlink("$PGN_GAME.game.out") ;
## ############################################################# ##
## Invoke xboard with loads of flags
## ############################################################# ##
$LOG_FILE = "$PGN_GAME.log" ;
$XBOARD_ARGS = ( " -cmail $PGN_GAME"
. " -flipView $FLIP"
. "$SAVE_FLAGS"
. "$TD_FLAGS"
. "$NCP_FLAGS"
. "$UNREC_ARGS") ;
&debug("Invoking xboard with args:$XBOARD_ARGS\n") ;
$PID_FILE = "$PGN_GAME.pid" ;
if ( (! $REUSE)
|| (! ( (-f $PID_FILE)
&& ($XBOARD_PID = `cat $PID_FILE`)
&& ("$XBOARD_PID" =~ /^\d+$/)
&& (kill "SIGUSR1", $XBOARD_PID)))) {
printf("Loading xboard for game <$PGN_GAME>...") ;
system( "{ ({ xboard $XBOARD_ARGS & } ;"
. " echo \$! > $PID_FILE ;"
. " wait ;"
. " rm $PID_FILE) & } >$LOG_FILE 2>&1") ;
printf( "done.\n"
. "If nothing happens look for an error message in\n"
. "$CHESSDIR/$LOG_FILE.\n") ;
} else {
printf("Revived existing xboard for game <$PGN_GAME>.\n"
. "If nothing happens"
. " remove $CHESSDIR/$PID_FILE and try again.\n") ;
}
exit 0 ;
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Find the game the user wants by any means possible
sub find_game {
&debug("Called <find_game>\n") ;
## ################################################################# ##
## Ask user for a game name if not already known
## ################################################################# ##
if ("" eq "$PGN_GAME") {
&prompt_for_game_name() ;
}
## ################################################################# ##
## Find out opponent's details
## ################################################################# ##
if ("" eq "$PGN_GAME") {
if ("" eq "$OPP_NAME") {
&prompt_for_opp_name() ; ## Ask user for opponent's name
}
&find_opp_address_in_alias_file() ; ## Find opp address in aliases
&find_game_in_game_file() ; ## Find game name in game file
} else {
&find_opp_address_in_game_file() ; ## Find opp address in game file
if ("" eq "$OPP_ADDRESS") {
$OPP_ADDRESS = $RETURN_ADDRESS ; ## Use return address instead
&debug( "Using return address <$OPP_ADDRESS>"
. " for opponent address\n") ;
}
if (("" eq "$OPP_ADDRESS") && ("" eq "$OPP_NAME")) {
&prompt_for_opp_name() ; ## Ask user for opponent's name
}
}
## ################################################################# ##
## Finally ask user for missing details as a last resort
## ################################################################# ##
if ("" eq "$OPP_ADDRESS") {
&find_opp_address_in_alias_file() ; ## Find opp address in aliases
if ("" eq "$OPP_ADDRESS") {
&prompt_for_opp_address() ; ## Ask user for opponent's address
}
}
## ################################################################# ##
## If no $PGN_GAME.game.in file, assume we're starting a new game
## ################################################################# ##
if (! (-f "$PGN_GAME.game.in")) {
&start_new_game() ;
}
## ################################################################# ##
## Give up if we haven't got anywhere to send a move to
## ################################################################# ##
if ("" eq "$OPP_ADDRESS") {
die "cmail: Can't proceed without opponent's email address.\n" ;
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get the date
sub get_date {
$the_time = time ;
($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) =
localtime($the_time) ;
$mon ++ ;
if ($mon < 10) {
$mon = "0$mon" ;
}
if ($year < 94) {
$century = 20 ;
} else {
$century = 19 ;
}
"$century$year.$mon.$mday" ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Start a new game
sub start_new_game {
printf("Starting a new game.\n") ;
$TO_PLAY = "white" ;
$MOVENUM = 0 ;
## ################################################################# ##
## Create an empty game file
## ################################################################# ##
open(GAMEFILE, "> $PGN_GAME.game.in") ;
select(GAMEFILE) ;
if ($OLDSAVE) {
printf("# xboard game file\n\n algebraic\n") ;
} else { ## New PGN format
&get_pw_name() ;
&get_pw_gcos() ;
$PGN_WHITE = $PW_GCOS ;
$PGN_WHITE = "?" unless ($PGN_WHITE) ;
$PGN_BLACK = "?" unless ($PGN_BLACK) ;
$PGN_WHITENA = "$PW_NAME@" . `domainname` if ($PGN_WHITENA eq "?") ;
$PGN_WHITENA =~ s/\n// ;
$PGN_WHITENA = "?" if ($PGN_WHITENA =~ /(^@)|(@$)/) ;
$PGN_BLACKNA = $OPP_ADDRESS if ($PGN_BLACKNA eq "?");
$PGN_BLACKNA = "?" unless ($PGN_BLACKNA) ;
$PGN_DATE = &get_date() ;
$PGN_DATE = "?" unless ($PGN_DATE) ;
printf("[Event \"$PGN_EVENT\"]
[Site \"$PGN_SITE\"]
[Date \"$PGN_DATE\"]
[Round \"$PGN_ROUND\"]
[White \"$PGN_WHITE\"]
[Black \"$PGN_BLACK\"]
[Result \"*\"]
[WhiteNA \"$PGN_WHITENA\"]
[BlackNA \"$PGN_BLACKNA\"]
[Mode \"$PGN_MODE\"]
[CmailGameName \"$PGN_GAME\"]
*
") ;
}
close(GAMEFILE) ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get the password file gcos (full name) entry
sub get_pw_entry {
($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) =
getpwuid($<);
($name, $gcos) ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get password file gcos (full name) entry
sub get_pw_gcos {
if (! $PW_GCOS) {
($dummy, $PW_GCOS) = &get_pw_entry() ;
$PW_GCOS =~ s/^\s*([^,()]+[^ ,()])[ ]*[,()].*$/$1/;
if ($PW_GCOS =~ /^([^,()]+)\s+([^\s,()]+)$/) { ## Multi-word name
$PW_GCOS = $2 . ", " . $1 ;
} elsif ($PW_GCOS !~ /^([^\s,()]+)/) { ## No sensible gcos entry
$PW_GCOS = "" ;
} ## Else leave it as one word
&debug("PW full name is <$PW_GCOS>\n");
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Get password file user name entry
sub get_pw_name {
if (! $PW_NAME) {
($PW_NAME, $dummy) = &get_pw_entry() ;
&debug("PW name is $PW_NAME\n");
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Analyse the email message
sub analyse_email_message {
printf("Processing game message...") ;
## ################################################################# ##
## Parse the mail message
## ################################################################# ##
while(<stdin>) {
if (/^From:?.*[<\s]([^<\s]+@[^>\s]+)([\s>]|$)/) {
$RETURN_ADDRESS = $1 ; ## Default for opponent's email address
&debug("Found opponent's email address <$RETURN_ADDRESS>\n") ;
} elsif(/^Subject:\s*cmail\s*(\d+)[.]\s+(.*)\s*<(.*)>$/) {
&debug("Move is $1 according to subject line\n") ;
$PGN_GAME = $3 ;
&debug("Found game name <$PGN_GAME>\n") ;
if (($1 eq 1) && ($2 =~ /^[^.]/)) {
$SAVE_ADDRESS = 1 ; ## Save address if on black's first move
}
} elsif(/xboard position file/) {
&debug("Found xboard position file\n") ; ## Don't need to read
$SAVE_FLAGS = " -oldsave" ; ## Old save-style format
$OLDSAVE = 1 ;
} elsif(/^(black|white) to play$/) {
$TO_PLAY = $1 ; ## Whose move is it (colour)?
if ($TO_PLAY eq "black") {
$FLIP = "true" ; ## Flip xboard board if black to play
}
&debug("Found to play <$TO_PLAY>, flip is <$FLIP>\n") ;
} elsif( /xboard game file/ ## Old xboard format
|| ( (! ($IN_FILE || $STORING))
&& /^(\[.*\]|\{.*)/)) { ## PGN format
## ######################################################### ##
## Open game file for copying the rest of the mail message into
## ######################################################### ##
if ($PGN_GAME) {
$IN_FILE = 1 ;
die "cmail: Can't open file: $PGN_GAME.game.in\n"
unless open(GAMEFILE, "> $PGN_GAME.game.in") ;
select(GAMEFILE) ;
} else {
$STORING = 1 ;
}
&debug("Found xboard game file\n") ;
} elsif((/^\[Black "[?]"\]/) && ($SAVE_ADDRESS)) {
&get_pw_gcos() ;
$PW_GCOS = "$RETURN_ADDRESS" unless ($PW_GCOS) ;
$PW_GCOS = "?" unless ($PW_GCOS) ;
$_ = "[Black \"$PW_GCOS\"]\n" ;
&debug("Changed Black tag to be $_") ;
} elsif( (/^\[WhiteNA "[?]"\]/)
&& (($SAVE_ADDRESS) && ($RETURN_ADDRESS))) {
$_ = "[WhiteNA \"$RETURN_ADDRESS\"]\n" ;
&debug("Changed WhiteNA tag to be $_") ;
} elsif( (/^\[WhiteNA "(.*)"\]/)
&& ("$PGN_WHITENA" eq "?")) {
$PGN_WHITENA = $1 ;
&debug("Found WhiteNA tag to be \"$PGN_WHITENA\"\n") ;
} elsif( (/^\[BlackNA "(.*)"\]/)
&& ("$PGN_BLACKNA" eq "?")) {
$PGN_BLACKNA = $1 ;
&debug("Found BlackNA tag to be \"$PGN_BLACKNA\"\n") ;
} elsif(/^\[CmailGameName "(.*)"\]/) {
$PGN_GAME = "$1" ;
&debug("Found cmail game name from PGN tag \"$PGN_GAME\"\n") ;
if ($STORING) {
$IN_FILE = 1 ;
$STORING = 0 ;
die "cmail: Can't open file: $PGN_GAME.game.in\n"
unless open(GAMEFILE, "> $PGN_GAME.game.in") ;
select(GAMEFILE) ;
print "$STORE" ;
}
} elsif (/^(.*[^\d]+|)\d+[.]\s*([^\s*]*\s+|)[^\s.*]+(\s*\d+[.]\s*|)[\s*]*$/) {
if ($2) {
$TO_PLAY = "white" ;
} else {
$TO_PLAY = "black" ;
}
&debug("$TO_PLAY to play\n") ;
}
if ($IN_FILE) {
&debug("$_") ;
print ; ## Copy end of mail message into game file
}
if ($STORING) {
&debug("$_") ;
$STORE .= $_ ; ## Add line to store
}
}
die "cmail: Couldn't find cmail game name!\n" if ($STORING) ;
if (! $RETURN_ADDRESS) {
if ($TO_PLAY eq "black") {
$RETURN_ADDRESS = $PGN_WHITENA unless ("$PGN_WHITENA" eq "?") ;
} else {
$RETURN_ADDRESS = $PGN_BLACKNA unless ("$PGN_BLACKNA" eq "?") ;
}
}
close(GAMEFILE) ;
select(STDOUT) ;
printf("done.\n") ;
## ################################################################# ##
## Check that we have enough info about the players to continue
## ################################################################# ##
&find_game() ;
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Analyse output files and send the move
sub send_move {
## ################################################################# ##
## Process the game.out and pos.out (if there is one) files
## ################################################################# ##
die "cmail: Can't open file: $PGN_GAME.out\n"
unless open(out, "> $PGN_GAME.out") ;
select(out) ;
## ################################################################# ##
## Cat the pos file into the .out file if there is one (old-style)
## ################################################################# ##
if (open(pos, "< $PGN_GAME.pos.out")) {
printf("cmail game <$PGN_GAME>\n") ; ## Old-style format
while(<pos>) {
&debug("$_") ;
## ######################################################### ##
## We probably don't know who it is to play if we bypassed
## loading xboard (for remail) so derive it from the
## "to play" line in the pos.out file
## ######################################################### ##
if (/^(black|white) to play$/) {
if ($1 eq "black") {
$TO_PLAY = "white" ; ## Change black to white
} else {
$TO_PLAY = "black" ; ## Change white to black
}
&debug("Found <$1> to play in",
" <$PGN_GAME.pos.out>,",
" reversed for remailing <$TO_PLAY>\n") ;
}
print ; ## Write the line to the .out file
}
close(pos) ; ## Close the pos.out file
}
## ################################################################# ##
## Cat the game file into the .out file. There must be one!
## ################################################################# ##
if (open(game, "< $PGN_GAME.game.out")) {
## ############################################################# ##
## Cat the .game.out file into the .out file, remembering
## the move number of the last line
## ############################################################# ##
while(<game>) {
&debug("$_") ;
if ($_ =~ /^(.*[^\d]+|)(\d+)[.]+\s*[^\s.]*\s+(\S+)\s*$/) {
$MOVENUM = $2 ;
$MOVE = $3 ;
}
## ######################################################### ##
## We probably don't know who it is to play if we bypassed
## loading xboard (for remail) and there is no position
## file (new-style), so derive it from the "to play" line
## in the game.out file
## ######################################################### ##
if (/^(black|white) to play$/) {
if ($1 eq "black") {
$TO_PLAY = "white" ; ## Change black to white
} else {
$TO_PLAY = "black" ; ## Change white to black
}
&debug("Found <$1> to play in",
" <$PGN_GAME.game.out>,",
" reversed for remailing <$TO_PLAY>\n") ;
}
print ;
}
close(game) ; ## Close the game.out file
close(out) ; ## Close the .out file
select(STDOUT) ; ## Write to the standard output
## ############################################################# ##
## If it's black to play, the subject line of the outgoing
## mail message contains dots where the white move would
## normally be
## ############################################################# ##
if ($TO_PLAY eq "black") {
$DOTS = " ...." ;
} else {
$DOTS = "" ;
}
## ############################################################# ##
## Send the mail message to opponent's address unless bypassed
## ############################################################# ##
if ($SEND_MAIL) {
$| = 1 ; ## Keep it flushed
print "" ;
$RES = system( "$MAILPROG"
. " -s \"cmail $MOVENUM.$DOTS $MOVE <$PGN_GAME>\""
. " $OPP_ADDRESS < $PGN_GAME.out") ;
if ($RES / 256) {
printf( "Failed to send email message.\n") ;
} else {
printf( "Emailed move to <$OPP_ADDRESS>: $MOVENUM.$DOTS"
. " $MOVE <$PGN_GAME>\n") ;
}
} else {
printf("Email not sent (as requested).\n") ;
printf("Would have emailed move to <$OPP_ADDRESS>:") ;
printf(" $MOVENUM.$DOTS $MOVE <$PGN_GAME>\n") ;
}
} else {
printf("I can't find the game file.") ;
printf(" Did you save the game?\n") ;
printf("Email not sent\n") ;
}
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
## Main body
&initialise() ; ## Initialise variables etc.
if (-t) { ## No input directed (invoked from a shell rather than a mailer)
&debug("Interactive!\n") ;
&find_game() ; ## Get the necessary info about the game
} else {
&debug("Piping!\n") ;
&analyse_email_message() ; ## Analyse the mail message
}
&add_game_to_game_file() ; ## Create an entry in user's list of games
&play_game() ; ## Load the game
&send_move() ; ## Analyse output files and send the move
close(tty) ; ## Tidy up
if ($DEBUG) {
close (logfile) ; ## Tidy up
}
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
__END__
cmail $Revision: 2.10 $, Copyright (C) 1993 Free Software Foundation, Inc.
cmail comes with ABSOLUTELY NO WARRANTY; for details type `cmail -w'.
cmail is free software, and you are welcome to redistribute it
under certain conditions; type `cmail -c' for details.
{END OF GPL COPYRIGHT}
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
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2. You may modify your copy or copies of the Program or any portion
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{END OF GPL CONDITIONS}
GNU GENERAL PUBLIC LICENSE
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