Nginx支持perl等cgi脚本的方法

需要环境:

perl -MCPAN -e 'install FCGI'

perl -MCPAN -e 'install FCGI::ProcManager'

1,利用perl产生一个sock

vi ~/cgi.pl

#!/usr/bin/perl -w
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);

#&daemonize; we don't daemonize when running under runsv
#this keeps the program alive or something after exec'ing perl scripts
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 {

#$socket = FCGI::OpenSocket( "127.0.0.1:8999", 10 ); #use IP sockets
#$socket = FCGI::OpenSocket( "/var/run/nginx/perl_cgi-dispatch.sock", 10 ); #use UNIX sockets - user running this script must have w access to the 'nginx' folder!!
#foreach $item (keys %ENV) { delete $ENV{$item}; }
    $proc_manager = FCGI::ProcManager->new( {n_processes => 5} );
    $socket = FCGI::OpenSocket( "/tmp/cgi.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";
        }
    }
}

2,修改里面sock地址为自己的目的地址。

3.在后台运行这个脚本,会在你指定的地方生成那个sock.

4.改变sock权限.chmod 777 /tmp/cgi.sock(让nginx有权限访问即可)

5,编写测试脚本:

vi 1.pl

#!/usr/bin/perl

print "Content-type: text/html\n\n";
print "<html><body>Hello, world.</body></html>";

nginx配置:

加入如下内容:

server {
        listen       8088;

        server_name  127.0.0.1;

        location / {
            root   /usr/local/nginx/test;
            index  index.html index.htm;
        }
        location ~ .(cgi|pl)$ {
        fastcgi_pass  unix:/tmp/cgi.sock;
        fastcgi_index index.cgi;
        fastcgi_param SCRIPT_FILENAME /usr/local/nginx/test$fastcgi_script_name;
        }
    }

最后重启nginx.访问测试页面, 出现内容就成功了.

发表评论