mirror of
https://github.com/moparisthebest/curl
synced 2024-08-13 17:03:50 -04:00
2fbbddbe85
Introduced in the initial gopher commits, there was added logic to do GOPHER test serving in the pingpong server but as it resembles HTTP much more than FTP or SMTP, the gopher testing has been moved over to instead use the sws (HTTP) server. This change simply removes unused code.
255 lines
7.7 KiB
Perl
255 lines
7.7 KiB
Perl
#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at http://curl.haxx.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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###########################################################################
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use strict;
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use warnings;
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use serverhelp qw(
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servername_id
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mainsockf_pidfilename
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datasockf_pidfilename
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);
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#######################################################################
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# pidfromfile returns the pid stored in the given pidfile. The value
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# of the returned pid will never be a negative value. It will be zero
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# on any file related error or if a pid can not be extracted from the
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# given file.
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#
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sub pidfromfile {
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my $pidfile = $_[0];
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my $pid = 0;
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if(-f $pidfile && -s $pidfile && open(PIDFH, "<$pidfile")) {
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$pid = 0 + <PIDFH>;
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close(PIDFH);
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$pid = 0 unless($pid > 0);
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}
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return $pid;
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}
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#######################################################################
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# processexists checks if a process with the pid stored in the given
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# pidfile exists and is alive. This will return 0 on any file related
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# error or if a pid can not be extracted from the given file. When a
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# process with the same pid as the one extracted from the given file
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# is currently alive this returns that positive pid. Otherwise, when
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# the process is not alive, will return the negative value of the pid.
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#
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sub processexists {
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use POSIX ":sys_wait_h";
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my $pidfile = $_[0];
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# fetch pid from pidfile
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my $pid = pidfromfile($pidfile);
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if($pid > 0) {
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# verify if currently alive
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if(kill(0, $pid)) {
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return $pid;
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}
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else {
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# get rid of the certainly invalid pidfile
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unlink($pidfile) if($pid == pidfromfile($pidfile));
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# reap its dead children, if not done yet
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waitpid($pid, &WNOHANG);
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# negative return value means dead process
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return -$pid;
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}
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}
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return 0;
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}
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#######################################################################
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# killpid attempts to gracefully stop processes in the given pid list
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# with a SIGTERM signal and SIGKILLs those which haven't died on time.
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#
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sub killpid {
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use POSIX ":sys_wait_h";
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my ($verbose, $pidlist) = @_;
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my @requested;
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my @signalled;
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my @reapchild;
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# The 'pidlist' argument is a string of whitespace separated pids.
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return if(not defined($pidlist));
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# Make 'requested' hold the non-duplicate pids from 'pidlist'.
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@requested = split(' ', $pidlist);
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return if(not @requested);
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if(scalar(@requested) > 2) {
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@requested = sort({$a <=> $b} @requested);
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}
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for(my $i = scalar(@requested) - 2; $i >= 0; $i--) {
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if($requested[$i] == $requested[$i+1]) {
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splice @requested, $i+1, 1;
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}
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}
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# Send a SIGTERM to processes which are alive to gracefully stop them.
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foreach my $tmp (@requested) {
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chomp $tmp;
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if($tmp =~ /^(\d+)$/) {
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my $pid = $1;
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if($pid > 0) {
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if(kill(0, $pid)) {
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print("RUN: Process with pid $pid signalled to die\n")
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if($verbose);
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kill("TERM", $pid);
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push @signalled, $pid;
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}
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else {
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print("RUN: Process with pid $pid already dead\n")
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if($verbose);
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# if possible reap its dead children
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waitpid($pid, &WNOHANG);
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push @reapchild, $pid;
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}
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}
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}
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}
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# Allow all signalled processes five seconds to gracefully die.
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if(@signalled) {
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my $twentieths = 5 * 20;
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while($twentieths--) {
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for(my $i = scalar(@signalled) - 1; $i >= 0; $i--) {
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my $pid = $signalled[$i];
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if(!kill(0, $pid)) {
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print("RUN: Process with pid $pid gracefully died\n")
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if($verbose);
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splice @signalled, $i, 1;
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# if possible reap its dead children
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waitpid($pid, &WNOHANG);
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push @reapchild, $pid;
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}
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}
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last if(not scalar(@signalled));
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select(undef, undef, undef, 0.05);
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}
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}
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# Mercilessly SIGKILL processes still alive.
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if(@signalled) {
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foreach my $pid (@signalled) {
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if($pid > 0) {
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print("RUN: Process with pid $pid forced to die with SIGKILL\n")
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if($verbose);
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kill("KILL", $pid);
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# if possible reap its dead children
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waitpid($pid, &WNOHANG);
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push @reapchild, $pid;
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}
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}
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}
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# Reap processes dead children for sure.
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if(@reapchild) {
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foreach my $pid (@reapchild) {
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if($pid > 0) {
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waitpid($pid, 0);
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}
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}
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}
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}
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#######################################################################
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# killsockfilters kills sockfilter processes for a given server.
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#
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sub killsockfilters {
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my ($proto, $ipvnum, $idnum, $verbose, $which) = @_;
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my $server;
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my $pidfile;
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my $pid;
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return if($proto !~ /^(ftp|imap|pop3|smtp)$/);
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die "unsupported sockfilter: $which"
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if($which && ($which !~ /^(main|data)$/));
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$server = servername_id($proto, $ipvnum, $idnum) if($verbose);
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if(!$which || ($which eq 'main')) {
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$pidfile = mainsockf_pidfilename($proto, $ipvnum, $idnum);
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$pid = processexists($pidfile);
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if($pid > 0) {
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printf("* kill pid for %s-%s => %d\n", $server,
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($proto eq 'ftp')?'ctrl':'filt', $pid) if($verbose);
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kill("KILL", $pid);
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waitpid($pid, 0);
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}
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unlink($pidfile) if(-f $pidfile);
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}
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return if($proto ne 'ftp');
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if(!$which || ($which eq 'data')) {
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$pidfile = datasockf_pidfilename($proto, $ipvnum, $idnum);
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$pid = processexists($pidfile);
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if($pid > 0) {
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printf("* kill pid for %s-data => %d\n", $server,
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$pid) if($verbose);
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kill("KILL", $pid);
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waitpid($pid, 0);
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}
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unlink($pidfile) if(-f $pidfile);
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}
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}
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#######################################################################
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# killallsockfilters kills sockfilter processes for all servers.
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#
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sub killallsockfilters {
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my $verbose = $_[0];
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for my $proto (('ftp', 'imap', 'pop3', 'smtp')) {
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for my $ipvnum (('4', '6')) {
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for my $idnum (('1', '2')) {
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killsockfilters($proto, $ipvnum, $idnum, $verbose);
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}
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}
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}
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}
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sub set_advisor_read_lock {
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my ($filename) = @_;
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if(open(FILEH, ">$filename")) {
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close(FILEH);
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return;
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}
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printf "Error creating lock file $filename error: $!";
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}
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sub clear_advisor_read_lock {
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my ($filename) = @_;
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if(-f $filename) {
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unlink($filename);
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}
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}
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1;
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