WEB·攻城志

本文安装环境为CentOS5.4，Nginx1.0.11

Perl以FastCGI模式安装，需要首先安装以下2个软件（CentOS自带Perl支持不做考虑）

1. FCGI
   [code]
   #wget http://search.cpan.org/CPAN/authors/id/F/FL/FLORA/FCGI-0.74.tar.gz
   #tar xzvf FCGI-0.74.tar.gz
   #cd FCGI-0.74
   #perl Makefile.PL
   #make
   #make install
   [/code]

1. FCGI-ProcManager
   [code]
   #wget http://search.cpan.org/CPAN/authors/id/B/BO/BOBTFISH/FCGI-ProcManager-0.24.tar.gz
   #tar xzvf FCGI-ProcManager-0.24.tar.gz
   #cd FCGI-ProcManager-0.24
   #perl Makefile.PL
   #make
   #make install
   [/code]

保存以下文件到 /usr/local/bin/cgiwrap-fcgi.pl

[code]
#!perl
use FCGI;
use Socket;
use FCGI::ProcManager;
sub shutdown { FCGI::CloseSocket($socket); exit; }
sub restart { FCGI::CloseSocket($socket); &main; }
use sigtrap ‘handler’, \&shutdown, ‘normal-signals’;
use sigtrap ‘handler’, \&restart, ‘HUP’;
require ‘syscall.ph’;
use POSIX qw(setsid);

END() { }
BEGIN() { }
{
no warnings;
*CORE::GLOBAL::exit = sub { die "fakeexit\nrc=" . shift() . "\n"; };
};

eval q{exit};
if ($@) {
exit unless $@ =~ /^fakeexit/;
}
&main;

sub daemonize() {
chdir ‘/’ or die "Can’t chdir to /: $!";
defined( my $pid = fork ) or die "Can’t fork: $!";
exit if $pid;
setsid() or die "Can’t start a new session: $!";
umask 0;
}

sub main {
$proc_manager = FCGI::ProcManager->new( {n_processes => 5} );
$socket = FCGI::OpenSocket( "/var/run/nginx/cgiwrap-dispatch.sock", 10 )
; #use UNIX sockets – user running this script must have w access to the ‘nginx’ folder!!
$request =
FCGI::Request( \*STDIN, \*STDOUT, \*STDERR, \%req_params, $socket,
&FCGI::FAIL_ACCEPT_ON_INTR );
$proc_manager->pm_manage();
if ($request) { request_loop() }
FCGI::CloseSocket($socket);
}

sub request_loop {
while ( $request->Accept() >= 0 ) {
$proc_manager->pm_pre_dispatch();

#processing any STDIN input from WebServer (for CGI-POST actions)
$stdin_passthrough = ”;
{ no warnings; $req_len = 0 + $req_params{‘CONTENT_LENGTH’}; };
if ( ( $req_params{‘REQUEST_METHOD’} eq ‘POST’ ) && ( $req_len != 0 ) ) {
my $bytes_read = 0;
while ( $bytes_read < $req_len ) {
my $data = ”;
my $bytes = read( STDIN, $data, ( $req_len – $bytes_read ) );
last if ( $bytes == 0 || !defined($bytes) );
$stdin_passthrough .= $data;
$bytes_read += $bytes;
}
}

#running the cgi app
if (
( -x $req_params{SCRIPT_FILENAME} ) && #can I execute this?
( -s $req_params{SCRIPT_FILENAME} ) && #Is this file empty?
( -r $req_params{SCRIPT_FILENAME} ) #can I read this file?
) {
pipe( CHILD_RD, PARENT_WR );
pipe( PARENT_ERR, CHILD_ERR );
my $pid = open( CHILD_O, "-|" );
unless ( defined($pid) ) {
print("Content-type: text/plain\r\n\r\n");
print "Error: CGI app returned no output – Executing $req_params{SCRIPT_FILENAME} failed !\n";
next;
}
$oldfh = select(PARENT_ERR);
$| = 1;
select(CHILD_O);
$| = 1;
select($oldfh);
if ( $pid > 0 ) {
close(CHILD_RD);
close(CHILD_ERR);
print PARENT_WR $stdin_passthrough;
close(PARENT_WR);
$rin = $rout = $ein = $eout = ”;
vec( $rin, fileno(CHILD_O), 1 ) = 1;
vec( $rin, fileno(PARENT_ERR), 1 ) = 1;
$ein = $rin;
$nfound = 0;

while ( $nfound = select( $rout = $rin, undef, $ein = $eout, 10 ) ) {
die "$!" unless $nfound != -1;
$r1 = vec( $rout, fileno(PARENT_ERR), 1 ) == 1;
$r2 = vec( $rout, fileno(CHILD_O), 1 ) == 1;
$e1 = vec( $eout, fileno(PARENT_ERR), 1 ) == 1;
$e2 = vec( $eout, fileno(CHILD_O), 1 ) == 1;

if ($r1) {
while ( $bytes = read( PARENT_ERR, $errbytes, 4096 ) ) {
print STDERR $errbytes;
}
if ($!) {
$err = $!;
die $!;
vec( $rin, fileno(PARENT_ERR), 1 ) = 0
unless ( $err == EINTR or $err == EAGAIN );
}
}
if ($r2) {
while ( $bytes = read( CHILD_O, $s, 4096 ) ) {
print $s;
}
if ( !defined($bytes) ) {
$err = $!;
die $!;
vec( $rin, fileno(CHILD_O), 1 ) = 0
unless ( $err == EINTR or $err == EAGAIN );
}
}
last if ( $e1 || $e2 );
}
close CHILD_RD;
close PARENT_ERR;
waitpid( $pid, 0 );
} else {
foreach $key ( keys %req_params ) {
$ENV{$key} = $req_params{$key};
}

# cd to the script’s local directory
if ( $req_params{SCRIPT_FILENAME} =~ /^(.*)\/[^\/] +$/ ) {
chdir $1;
}
close(PARENT_WR);
#close(PARENT_ERR);
close(STDIN);
close(STDERR);

#fcntl(CHILD_RD, F_DUPFD, 0);
syscall( &SYS_dup2, fileno(CHILD_RD), 0 );
syscall( &SYS_dup2, fileno(CHILD_ERR), 2 );

#open(STDIN, "<&CHILD_RD");
exec( $req_params{SCRIPT_FILENAME} );
die("exec failed");
}
} else {
print("Content-type: text/plain\r\n\r\n");
print "Error: No such CGI app – $req_params{SCRIPT_FILENAME} may not exist or is not executable by this process.\n";
}
}
}
[/code]

以上脚本将生成/var/run/nginx/cgiwrap-dispatch.sock文件，请确保路径有效，以及Nginx工作进程有读写权限.
运行perl fast-cig
#perl /usr/local/bin/cgiwrap-fcgi.pl &

配置Nginx

[code]
#添加以下代码
location ~ \.(cgi|pl)$ {
gzip off; #gzip makes scripts feel slower since they have to complete before getting gzipped
fastcgi_pass unix:/var/run/nginx/cgiwrap-dispatch.sock;
fastcgi_index index.cgi;
fastcgi_param SCRIPT_FILENAME /var/www/cgi-bin$fastcgi_script_name;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
}
[/code]

参数资料：http://wiki.nginx.org/SimpleCGI