| 1 |
ulpfr |
10 |
# -*- Mode: Perl -*- |
| 2 |
|
|
# $Basename: Server.pm $ |
| 3 |
|
|
# $Revision: 1.5 $ |
| 4 |
|
|
# ITIID : $ITI$ $Header $__Header$ |
| 5 |
|
|
# Author : Ulrich Pfeifer |
| 6 |
|
|
# Created On : Sat Sep 28 13:53:36 1996 |
| 7 |
|
|
# Last Modified By: Ulrich Pfeifer |
| 8 |
|
|
# Last Modified On: Sun Nov 22 18:44:38 1998 |
| 9 |
|
|
# Language : CPerl |
| 10 |
|
|
# Update Count : 280 |
| 11 |
|
|
# Status : Unknown, Use with caution! |
| 12 |
|
|
# |
| 13 |
|
|
# Copyright (c) 1996-1997, Ulrich Pfeifer |
| 14 |
|
|
# |
| 15 |
|
|
|
| 16 |
|
|
package WAIT::Server; |
| 17 |
|
|
use vars qw($VERSION @ISA @EXPORT); |
| 18 |
|
|
use WAIT::Config; |
| 19 |
|
|
use IO::Socket; |
| 20 |
|
|
use IO::Select; |
| 21 |
|
|
use strict; |
| 22 |
|
|
use sigtrap qw(handler IGNORE error-signals); |
| 23 |
|
|
require Exporter; |
| 24 |
|
|
@ISA = qw(Exporter); |
| 25 |
|
|
@EXPORT = qw(server); |
| 26 |
|
|
|
| 27 |
ulpfr |
19 |
my($ver) = '$ProjectVersion: 18.1 $ ' =~ /([\d.]+)/; $VERSION = sprintf '%5.3f', $ver/10; |
| 28 |
ulpfr |
10 |
|
| 29 |
|
|
sub server { |
| 30 |
|
|
my %opt = @_; |
| 31 |
|
|
my $port = $opt{port} || $WAIT::Config->{port} || 1404; |
| 32 |
|
|
|
| 33 |
|
|
my $lsn = new WAIT::Handle(Reuse => 1, |
| 34 |
|
|
Listen => 5, |
| 35 |
|
|
LocalPort => $port, |
| 36 |
|
|
Proto => 'tcp'); |
| 37 |
|
|
die "Could not connect to port $port: $!\n" unless defined $lsn; |
| 38 |
|
|
|
| 39 |
|
|
my $SEL = new IO::Select( $lsn ); |
| 40 |
|
|
my %CON; |
| 41 |
|
|
my $fh; |
| 42 |
|
|
my @ready; |
| 43 |
|
|
|
| 44 |
|
|
print "listening on port $port\n"; |
| 45 |
|
|
|
| 46 |
|
|
while(1) { |
| 47 |
|
|
alarm(0); |
| 48 |
|
|
@ready = $SEL->can_read; |
| 49 |
|
|
#printf STDERR "=== %s %s\n", unpack ('b*', $SEL->[0]), join ':', @ready; |
| 50 |
|
|
#sleep 1; |
| 51 |
|
|
REQUEST: |
| 52 |
|
|
alarm(25); |
| 53 |
|
|
foreach $fh (@ready) { |
| 54 |
|
|
if($fh == $lsn) { |
| 55 |
|
|
my $new = $lsn->accept; # Create a new socket |
| 56 |
|
|
$CON{$new} = new WAIT::Server::Connection $new, $VERSION; |
| 57 |
|
|
$SEL->add($new); |
| 58 |
|
|
} else { |
| 59 |
|
|
my ($cmd, $func, @args, @cmd); |
| 60 |
|
|
my $fno = fileno($fh); |
| 61 |
|
|
|
| 62 |
|
|
$cmd = $fh->getline(); |
| 63 |
|
|
if ($cmd =~ /^post/i) { |
| 64 |
|
|
/`/; |
| 65 |
|
|
my $buf = |
| 66 |
|
|
$cmd . |
| 67 |
|
|
join('', @{${*$fh}{'net_cmd_lines'}}) . |
| 68 |
|
|
${*$fh}{'net_cmd_partial'}; |
| 69 |
|
|
($cmd) = ($buf =~ /^Command: (.*)$/m); |
| 70 |
|
|
($cmd, @cmd) = (split (/:/, $cmd), 'quit'); |
| 71 |
|
|
${*$fh}{'net_cmd_partial'} = ''; |
| 72 |
|
|
/`/; |
| 73 |
|
|
$CON{$fh}->{http} = 1; |
| 74 |
|
|
} |
| 75 |
|
|
COMMAND: |
| 76 |
|
|
for $cmd ($cmd, @cmd) { |
| 77 |
|
|
($func, @args) = split ' ', $cmd; |
| 78 |
|
|
unless (fileno($fh)) { |
| 79 |
|
|
printf STDERR "Shuttig down $fh(%d)\n", $fno; |
| 80 |
|
|
delete $CON{$fh}; |
| 81 |
|
|
$SEL->remove($fno); |
| 82 |
|
|
next REQUEST; |
| 83 |
|
|
} |
| 84 |
|
|
$func = lc($func); |
| 85 |
|
|
$func = $CON{$fh}->dispatch($func, @args); |
| 86 |
|
|
if ($func eq 'quit') { |
| 87 |
|
|
printf STDERR "closed\n"; |
| 88 |
|
|
$SEL->remove($fh); |
| 89 |
|
|
$CON{$fh}->close; |
| 90 |
|
|
delete $CON{$fh}; |
| 91 |
|
|
last COMMAND; |
| 92 |
|
|
} |
| 93 |
|
|
} |
| 94 |
|
|
} |
| 95 |
|
|
} |
| 96 |
|
|
} |
| 97 |
|
|
} |
| 98 |
|
|
|
| 99 |
|
|
package WAIT::Handle; |
| 100 |
|
|
use Net::Cmd; |
| 101 |
|
|
use IO::Socket; |
| 102 |
|
|
use vars qw(@ISA); |
| 103 |
|
|
use strict; |
| 104 |
|
|
|
| 105 |
|
|
@ISA = qw(Net::Cmd IO::Socket::INET); |
| 106 |
|
|
|
| 107 |
|
|
# Snarfed from Net::Cmd; we don't expect an answer. |
| 108 |
|
|
sub dataend |
| 109 |
|
|
{ |
| 110 |
|
|
my $cmd = shift; |
| 111 |
|
|
|
| 112 |
|
|
return 1 |
| 113 |
|
|
unless(exists ${*$cmd}{'net_cmd_lastch'}); |
| 114 |
|
|
|
| 115 |
|
|
if(${*$cmd}{'net_cmd_lastch'} eq "\015") |
| 116 |
|
|
{ |
| 117 |
|
|
syswrite($cmd,"\012",1); |
| 118 |
|
|
print STDERR "\n" |
| 119 |
|
|
if($cmd->debug); |
| 120 |
|
|
} |
| 121 |
|
|
elsif(${*$cmd}{'net_cmd_lastch'} ne "\012") |
| 122 |
|
|
{ |
| 123 |
|
|
syswrite($cmd,"\015\012",2); |
| 124 |
|
|
print STDERR "\n" |
| 125 |
|
|
if($cmd->debug); |
| 126 |
|
|
} |
| 127 |
|
|
|
| 128 |
|
|
print STDERR "$cmd>>> .\n" |
| 129 |
|
|
if($cmd->debug); |
| 130 |
|
|
|
| 131 |
|
|
syswrite($cmd,".\015\012",3); |
| 132 |
|
|
|
| 133 |
|
|
delete ${*$cmd}{'net_cmd_lastch'}; |
| 134 |
|
|
|
| 135 |
|
|
} |
| 136 |
|
|
|
| 137 |
|
|
package WAIT::Server::Connection; |
| 138 |
|
|
use strict; |
| 139 |
|
|
use Sys::Hostname; |
| 140 |
|
|
use Socket qw(AF_INET unpack_sockaddr_in); |
| 141 |
|
|
use vars qw(%CMD %MSG %HELP); |
| 142 |
|
|
|
| 143 |
|
|
my $HOST = hostname; |
| 144 |
|
|
{ |
| 145 |
|
|
no strict; |
| 146 |
|
|
local *stab = *WAIT::Server::Connection::; |
| 147 |
|
|
my ($key,$val); |
| 148 |
|
|
while (($key,$val) = each(%stab)) { |
| 149 |
|
|
next unless $key =~ /^cmd_(.*)/; |
| 150 |
|
|
local(*ENTRY) = $val; |
| 151 |
|
|
if (defined &ENTRY) { |
| 152 |
|
|
$CMD{$1} = \&ENTRY; |
| 153 |
|
|
} |
| 154 |
|
|
} |
| 155 |
|
|
} |
| 156 |
|
|
|
| 157 |
|
|
|
| 158 |
|
|
sub new { |
| 159 |
|
|
my $type = shift; |
| 160 |
|
|
my $fh = shift; |
| 161 |
|
|
my $msg = shift; |
| 162 |
|
|
my $self = {_fh => $fh}; |
| 163 |
|
|
|
| 164 |
|
|
my $hersockaddr = $fh->peername(); |
| 165 |
|
|
my ($port, $iaddr) = unpack_sockaddr_in($hersockaddr); |
| 166 |
|
|
my $peer = gethostbyaddr($iaddr, AF_INET); |
| 167 |
|
|
$self->{peer} = $peer; |
| 168 |
|
|
$self->{database} = 'DB'; |
| 169 |
|
|
$self->{table} = 'cpan'; |
| 170 |
|
|
$self->{hits} = 10; |
| 171 |
|
|
print "Connection from $peer\n"; |
| 172 |
|
|
bless $self, $type; |
| 173 |
|
|
$self->msg(200, $msg); |
| 174 |
|
|
$self; |
| 175 |
|
|
} |
| 176 |
|
|
|
| 177 |
|
|
sub close { |
| 178 |
|
|
my $self = shift; |
| 179 |
|
|
|
| 180 |
|
|
$self->{_fh}->close; |
| 181 |
|
|
} |
| 182 |
|
|
|
| 183 |
|
|
|
| 184 |
|
|
sub dispatch { |
| 185 |
|
|
my $self = shift; |
| 186 |
|
|
my $cmd = shift; |
| 187 |
|
|
|
| 188 |
|
|
print "$cmd @_\n"; |
| 189 |
|
|
unless (exists $CMD{$cmd}) { |
| 190 |
|
|
$self->msg(500); |
| 191 |
|
|
} else { |
| 192 |
|
|
&{$CMD{$cmd}}($self, @_); |
| 193 |
|
|
} |
| 194 |
|
|
$cmd; |
| 195 |
|
|
} |
| 196 |
|
|
|
| 197 |
|
|
sub msg { |
| 198 |
|
|
my $self = shift; |
| 199 |
|
|
my $code = shift; |
| 200 |
|
|
my $msg = $MSG{$code} || ''; |
| 201 |
|
|
printf("%s %s %03d $msg\r\n", scalar(localtime(time)), $self->{peer}, $code, @_); |
| 202 |
|
|
$self->{_fh}->datasend(sprintf("%03d $msg\r\n", $code, @_)); |
| 203 |
|
|
} |
| 204 |
|
|
|
| 205 |
|
|
sub end { |
| 206 |
|
|
my $self = shift; |
| 207 |
|
|
$self->{_fh}->dataend; |
| 208 |
|
|
} |
| 209 |
|
|
|
| 210 |
|
|
|
| 211 |
|
|
require WAIT::Query::Wais; |
| 212 |
|
|
require WAIT::Database; |
| 213 |
|
|
use Fcntl; |
| 214 |
|
|
|
| 215 |
|
|
my %DB; # cache Databas handles |
| 216 |
|
|
sub DATABASE { |
| 217 |
|
|
my $dn = shift; |
| 218 |
|
|
|
| 219 |
|
|
return $DB{$dn} if exists $DB{$dn}; |
| 220 |
|
|
$DB{$dn} = WAIT::Database->open(name => $dn, |
| 221 |
|
|
directory => $WAIT::Config->{'WAIT_home'}, |
| 222 |
|
|
mode => O_RDONLY); |
| 223 |
|
|
return $DB{$dn}; |
| 224 |
|
|
} |
| 225 |
|
|
|
| 226 |
|
|
my %TB; # cache Table handles |
| 227 |
|
|
sub TABLE { |
| 228 |
|
|
my ($dbname, $tname) = @_; |
| 229 |
|
|
|
| 230 |
|
|
return $TB{$dbname.$tname} if exists $TB{$dbname.$tname}; |
| 231 |
|
|
my $db = DATABASE($dbname); |
| 232 |
|
|
|
| 233 |
|
|
$TB{$dbname.$tname} = $db->table(name => $tname); |
| 234 |
|
|
$TB{$dbname.$tname}; |
| 235 |
|
|
} |
| 236 |
|
|
|
| 237 |
|
|
|
| 238 |
|
|
# helpers |
| 239 |
|
|
sub result { |
| 240 |
|
|
my $self = shift; |
| 241 |
|
|
my $hit = shift; |
| 242 |
|
|
my $did; |
| 243 |
|
|
|
| 244 |
|
|
# http uses raw document id's |
| 245 |
|
|
if ($self->{http}) { |
| 246 |
|
|
return $hit; |
| 247 |
|
|
} |
| 248 |
|
|
unless ($self->{result}) { |
| 249 |
|
|
$self->msg(404); |
| 250 |
|
|
return; |
| 251 |
|
|
} |
| 252 |
|
|
unless ($did = $self->{result}->[$hit-1]) { |
| 253 |
|
|
$self->msg(405); |
| 254 |
|
|
return; |
| 255 |
|
|
} |
| 256 |
|
|
return $did; |
| 257 |
|
|
} |
| 258 |
|
|
|
| 259 |
|
|
sub table { |
| 260 |
|
|
my $self = shift; |
| 261 |
|
|
|
| 262 |
|
|
TABLE($self->{database}, $self->{table}); |
| 263 |
|
|
} |
| 264 |
|
|
|
| 265 |
|
|
sub output { |
| 266 |
|
|
my $self = shift; |
| 267 |
|
|
|
| 268 |
|
|
$self->{_fh}->datasend(@_); |
| 269 |
|
|
} |
| 270 |
|
|
|
| 271 |
|
|
|
| 272 |
|
|
# The commands |
| 273 |
|
|
|
| 274 |
|
|
sub cmd_help { |
| 275 |
|
|
my $self = shift; |
| 276 |
|
|
|
| 277 |
|
|
$self->msg(100); |
| 278 |
|
|
for (sort keys %CMD) { |
| 279 |
|
|
$self->output(sprintf("%-15s %s\r\n", $_, $HELP{$_}||'')); |
| 280 |
|
|
} |
| 281 |
|
|
$self->end; |
| 282 |
|
|
} |
| 283 |
|
|
|
| 284 |
|
|
sub cmd_quit { |
| 285 |
|
|
my $self = shift; |
| 286 |
|
|
$self->msg(205); |
| 287 |
|
|
} |
| 288 |
|
|
|
| 289 |
|
|
sub cmd_database { |
| 290 |
|
|
my $self = shift; |
| 291 |
|
|
my $dbname = shift || $self->{database}; |
| 292 |
|
|
|
| 293 |
|
|
|
| 294 |
|
|
if (DATABASE($dbname)) { |
| 295 |
|
|
delete $self->{'result'}; |
| 296 |
|
|
$self->{database} = $dbname; |
| 297 |
|
|
$self->msg(201, $dbname); |
| 298 |
|
|
} else { |
| 299 |
|
|
$self->msg(401, $dbname); |
| 300 |
|
|
} |
| 301 |
|
|
} |
| 302 |
|
|
|
| 303 |
|
|
sub cmd_table { |
| 304 |
|
|
my $self = shift; |
| 305 |
|
|
my $table = shift || $self->{'table'}; |
| 306 |
|
|
my $dbname = $self->{'database'}; |
| 307 |
|
|
|
| 308 |
|
|
if (TABLE($dbname, $table)) { |
| 309 |
|
|
delete $self->{'result'}; |
| 310 |
|
|
$self->{'table'} = $table; |
| 311 |
|
|
$self->msg(202, $table); |
| 312 |
|
|
} else { |
| 313 |
|
|
$self->msg(402, $table); |
| 314 |
|
|
} |
| 315 |
|
|
} |
| 316 |
|
|
|
| 317 |
|
|
sub cmd_hits { |
| 318 |
|
|
my $self = shift; |
| 319 |
|
|
my $hits = shift; |
| 320 |
|
|
|
| 321 |
|
|
if ($hits) { |
| 322 |
|
|
$self->{hits} = $hits; |
| 323 |
|
|
$self->msg(204, $hits); |
| 324 |
|
|
} else { |
| 325 |
|
|
$self->msg(501); |
| 326 |
|
|
} |
| 327 |
|
|
} |
| 328 |
|
|
|
| 329 |
|
|
sub cmd_info { |
| 330 |
|
|
my $self = shift; |
| 331 |
|
|
my $hit = shift; |
| 332 |
|
|
|
| 333 |
|
|
my $did = $self->result($hit); |
| 334 |
|
|
return unless $did; |
| 335 |
|
|
|
| 336 |
|
|
my $tb = $self->table; |
| 337 |
|
|
|
| 338 |
|
|
my %rec = $tb->fetch($did); |
| 339 |
|
|
$self->msg(207, $did); |
| 340 |
|
|
for (keys %rec) { |
| 341 |
|
|
$self->{_fh}->datasend(sprintf("%-15s %s\n", $_, $rec{$_})); |
| 342 |
|
|
} |
| 343 |
|
|
$self->end; |
| 344 |
|
|
} |
| 345 |
|
|
|
| 346 |
|
|
sub cmd_get { |
| 347 |
|
|
my $self = shift; |
| 348 |
|
|
my $hit = shift; |
| 349 |
|
|
my $did = $self->result($hit); |
| 350 |
|
|
|
| 351 |
|
|
return unless $did; |
| 352 |
|
|
my $tb = $self->table; |
| 353 |
|
|
my %rec = $tb->fetch($did); |
| 354 |
|
|
my $key = $rec{docid}; |
| 355 |
|
|
|
| 356 |
|
|
$key = $tb->dir . '/' . $key if $key =~ m(^data/); |
| 357 |
|
|
|
| 358 |
|
|
my $text = $tb->fetch_extern($key); |
| 359 |
|
|
|
| 360 |
|
|
$self->msg(206, $did); |
| 361 |
|
|
$self->output($text); |
| 362 |
|
|
$self->output("\n") unless $text =~ /\n$/; |
| 363 |
|
|
$self->end; |
| 364 |
|
|
} |
| 365 |
|
|
|
| 366 |
|
|
sub cmd_search { |
| 367 |
|
|
my $self = shift; |
| 368 |
|
|
my $query = join ' ', @_; |
| 369 |
|
|
my $tb = $self->table; |
| 370 |
|
|
|
| 371 |
|
|
my $wq = eval {WAIT::Query::Wais::query($tb, $query)}; |
| 372 |
|
|
unless ($wq) { |
| 373 |
|
|
$self->msg(403); |
| 374 |
|
|
return; |
| 375 |
|
|
} |
| 376 |
|
|
my %hits = $wq->execute(); |
| 377 |
|
|
my @did = sort {$hits{$b} <=> $hits{$a}}keys %hits; |
| 378 |
|
|
|
| 379 |
|
|
# sanity check. this is expensive and should be obsolete! |
| 380 |
|
|
# @did = grep $tb->fetch($_), @did; |
| 381 |
|
|
|
| 382 |
|
|
$self->{'result'} = \@did; |
| 383 |
|
|
my $all_hits = scalar @did; |
| 384 |
|
|
my $send_hits = $all_hits; |
| 385 |
|
|
|
| 386 |
|
|
if ($send_hits > $self->{hits}) { |
| 387 |
|
|
$send_hits = $self->{hits}; |
| 388 |
|
|
} |
| 389 |
|
|
$self->msg(203, $all_hits, $send_hits); |
| 390 |
|
|
my $i; |
| 391 |
|
|
|
| 392 |
|
|
for ($i=1;$i<=$send_hits;$i++) { |
| 393 |
|
|
my $did = $did[$i-1]; |
| 394 |
|
|
my %rec = $tb->fetch($did); |
| 395 |
|
|
$self->{_fh}->datasend(sprintf("%2d %5.3f %s\n", |
| 396 |
|
|
$self->{http}?$did:$i, |
| 397 |
|
|
$hits{$did}, |
| 398 |
|
|
$rec{headline})); |
| 399 |
|
|
} |
| 400 |
|
|
$self->end(); |
| 401 |
|
|
} |
| 402 |
|
|
|
| 403 |
|
|
# read status messages |
| 404 |
|
|
my $line; |
| 405 |
|
|
while (defined ($line = <DATA>)) { |
| 406 |
|
|
chomp($line); |
| 407 |
|
|
my ($cmd, $msg) = split ' ', $line, 2; |
| 408 |
|
|
last unless $cmd; |
| 409 |
|
|
$HELP{$cmd} = $msg; |
| 410 |
|
|
} |
| 411 |
|
|
while (defined ($line = <DATA>)) { |
| 412 |
|
|
chomp($line); |
| 413 |
|
|
next unless $line =~ /^\d/; |
| 414 |
|
|
my ($code, $msg) = split ' ', $line, 2; |
| 415 |
|
|
$MSG{$code} = $msg; |
| 416 |
|
|
} |
| 417 |
|
|
|
| 418 |
|
|
|
| 419 |
|
|
1; |
| 420 |
|
|
|
| 421 |
|
|
__DATA__ |
| 422 |
|
|
help - display this help message |
| 423 |
|
|
database name set database name |
| 424 |
|
|
table name set table name |
| 425 |
|
|
search query submitt query |
| 426 |
|
|
get number fetch full text of hit with number |
| 427 |
|
|
info number display info record of hit with number |
| 428 |
|
|
format text|html|term |
| 429 |
|
|
hits number set maximum hits displayed to number |
| 430 |
|
|
quit |
| 431 |
|
|
|
| 432 |
|
|
100 help message follows |
| 433 |
|
|
200 WAIT server %s ready |
| 434 |
|
|
205 closing connection - goodbye! |
| 435 |
|
|
201 database %s selected |
| 436 |
|
|
401 could not open database %s |
| 437 |
|
|
202 table %s selected |
| 438 |
|
|
203 query returnes %d hits, %d hits follow |
| 439 |
|
|
204 will return %d hits |
| 440 |
|
|
207 record %d follows |
| 441 |
|
|
206 text of record %d follows |
| 442 |
|
|
402 could not open table %s |
| 443 |
|
|
403 syntax error in query |
| 444 |
|
|
404 use search first |
| 445 |
|
|
405 no such hit |
| 446 |
|
|
500 command not recognized |
| 447 |
|
|
501 command syntax error |
| 448 |
|
|
502 access restriction or permission denied |
| 449 |
|
|
503 program fault - command not performed |
| 450 |
|
|
1; |
Parent Directory
| 
Revision Log