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配置 Nginx 支持 CGI |
| 發布時間: 2012/9/11 13:01:30 |
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安裝所需的 perl fcgi 模塊： apt-get install libfcgi-perl libfcgi-procmanager-perl 用 perl 寫一個 daemon 程序來處理 cgi 文件： vi /usr/local/bin/cgiwrap-fcgi.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( "127.0.0.1:8999", 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"); "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"); "Error: No such CGI app - $req_params{SCRIPT_FILENAME} may not exist or is not executable by this process.\n"; } } } 注意文件中的這兩行： #$socket = FCGI::OpenSocket( "127.0.0.1:8999", 10 ); #$socket = FCGI::OpenSocket( "/var/run/nginx/perl_cgi-dispatch.sock", 10 ); 這兩行都表示監聽來自 perl CGI 的請求。 其中 perl_cgi-dispatch.sock 表示使用 unix socket 響應 CGI 請求。 127.0.0.1:8999 表示使用 TCP/IP 協議響應請求。 需要使用哪種方式就在下面的 FCGI::OpenSocket 中填入相對應的內容。 啟動： chmod +x /usr/local/bin/cgiwrap-fcgi.pl /usr/local/bin/cgiwrap-fcgi.pl > /dev/null 2>&1 & 配置 Nginx 的 location 處理 cgi 文件： location ~ .*\.cgi$ { fastcgi_pass 127.0.0.1:8999; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } 測試： 在 web 的根目錄下創建一個 cgi 文件： vi test.cgi #!/usr/bin/perl print "Content-type: text/html\n\n"; print "Hello, world."; 文件需要有可執行權限： chmod +x test.cgi 訪問 http://www.domain.com/test.cgi 看看有沒有輸出。 cgiwrap-fcgi.pl 隨 nginx 一起啟動/關閉： 修改 nginx 啟動腳本： 在 start 段加入： /usr/local/bin/cgiwrap-fcgi.pl > /dev/null 2>&1 & 在 stop 段加入： PID=`/bin/netstat -npl | grep "127.0.0.1:8999" | awk '{print $7}' | cut -d "/" -f 1` while [ -n "$PID" ] do kill -9 "$PID" PID=`/bin/netstat -npl | grep "127.0.0.1:8999" | awk '{print $7}' | cut -d "/" -f 1` done 本文出自：億恩科技【www.artduck.net】 |
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