git-instaweb.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Eric Wong
   4 #
   5
   6 PERL='@@PERL@@'
   7 OPTIONS_KEEPDASHDASH=
   8 OPTIONS_SPEC="\
   9 git instaweb [options] (--start | --stop | --restart)
  10 --
  11 l,local        only bind on 127.0.0.1
  12 p,port=        the port to bind to
  13 d,httpd=       the command to launch
  14 b,browser=     the browser to launch
  15 m,module-path= the module path (only needed for apache2)
  16  Action
  17 stop           stop the web server
  18 start          start the web server
  19 restart        restart the web server
  20 "
  21
  22 . git-sh-setup
  23
  24 fqgitdir="$GIT_DIR"
  25 local="$(git config --bool --get instaweb.local)"
  26 httpd="$(git config --get instaweb.httpd)"
  27 root="$(git config --get instaweb.gitwebdir)"
  28 port=$(git config --get instaweb.port)
  29 module_path="$(git config --get instaweb.modulepath)"
  30
  31 conf="$GIT_DIR/gitweb/httpd.conf"
  32
  33 # Defaults:
  34
  35 # if installed, it doesn't need further configuration (module_path)
  36 test -z "$httpd" && httpd='lighttpd -f'
  37
  38 # Default is @@GITWEBDIR@@
  39 test -z "$root" && root='@@GITWEBDIR@@'
  40
  41 # any untaken local port will do...
  42 test -z "$port" && port=1234
  43
  44 resolve_full_httpd () {
  45         case "$httpd" in
  46         *apache2*|*lighttpd*)
  47                 # ensure that the apache2/lighttpd command ends with "-f"
  48                 if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1
  49                 then
  50                         httpd="$httpd -f"
  51                 fi
  52                 ;;
  53         *plackup*)
  54                 # server is started by running via generated gitweb.psgi in $fqgitdir/gitweb
  55                 full_httpd="$fqgitdir/gitweb/gitweb.psgi"
  56                 httpd_only="${httpd%% *}" # cut on first space
  57                 return
  58                 ;;
  59         esac
  60
  61         httpd_only="$(echo $httpd | cut -f1 -d' ')"
  62         if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null 2>&1;; esac
  63         then
  64                 full_httpd=$httpd
  65         else
  66                 # many httpds are installed in /usr/sbin or /usr/local/sbin
  67                 # these days and those are not in most users $PATHs
  68                 # in addition, we may have generated a server script
  69                 # in $fqgitdir/gitweb.
  70                 for i in /usr/local/sbin /usr/sbin "$root" "$fqgitdir/gitweb"
  71                 do
  72                         if test -x "$i/$httpd_only"
  73                         then
  74                                 full_httpd=$i/$httpd
  75                                 return
  76                         fi
  77                 done
  78
  79                 echo >&2 "$httpd_only not found. Install $httpd_only or use" \
  80                      "--httpd to specify another httpd daemon."
  81                 exit 1
  82         fi
  83 }
  84
  85 start_httpd () {
  86         if test -f "$fqgitdir/pid"; then
  87                 say "Instance already running. Restarting..."
  88                 stop_httpd
  89         fi
  90
  91         # here $httpd should have a meaningful value
  92         resolve_full_httpd
  93
  94         # don't quote $full_httpd, there can be arguments to it (-f)
  95         case "$httpd" in
  96         *mongoose*|*plackup*)
  97                 #These servers don't have a daemon mode so we'll have to fork it
  98                 $full_httpd "$fqgitdir/gitweb/httpd.conf" &
  99                 #Save the pid before doing anything else (we'll print it later)
 100                 pid=$!
 101
 102                 if test $? != 0; then
 103                         echo "Could not execute http daemon $httpd."
 104                         exit 1
 105                 fi
 106
 107                 cat > "$fqgitdir/pid" <<EOF
 108 $pid
 109 EOF
 110                 ;;
 111         *)
 112                 $full_httpd "$fqgitdir/gitweb/httpd.conf"
 113                 if test $? != 0; then
 114                         echo "Could not execute http daemon $httpd."
 115                         exit 1
 116                 fi
 117                 ;;
 118         esac
 119 }
 120
 121 stop_httpd () {
 122         test -f "$fqgitdir/pid" && kill $(cat "$fqgitdir/pid")
 123         rm -f "$fqgitdir/pid"
 124 }
 125
 126 httpd_is_ready () {
 127         "$PERL" -MIO::Socket::INET -e "
 128 local \$| = 1; # turn on autoflush
 129 exit if (IO::Socket::INET->new('127.0.0.1:$port'));
 130 print 'Waiting for \'$httpd\' to start ..';
 131 do {
 132         print '.';
 133         sleep(1);
 134 } until (IO::Socket::INET->new('127.0.0.1:$port'));
 135 print qq! (done)\n!;
 136 "
 137 }
 138
 139 while test $# != 0
 140 do
 141         case "$1" in
 142         --stop|stop)
 143                 stop_httpd
 144                 exit 0
 145                 ;;
 146         --start|start)
 147                 start_httpd
 148                 exit 0
 149                 ;;
 150         --restart|restart)
 151                 stop_httpd
 152                 start_httpd
 153                 exit 0
 154                 ;;
 155         -l|--local)
 156                 local=true
 157                 ;;
 158         -d|--httpd)
 159                 shift
 160                 httpd="$1"
 161                 ;;
 162         -b|--browser)
 163                 shift
 164                 browser="$1"
 165                 ;;
 166         -p|--port)
 167                 shift
 168                 port="$1"
 169                 ;;
 170         -m|--module-path)
 171                 shift
 172                 module_path="$1"
 173                 ;;
 174         --)
 175                 ;;
 176         *)
 177                 usage
 178                 ;;
 179         esac
 180         shift
 181 done
 182
 183 mkdir -p "$GIT_DIR/gitweb/tmp"
 184 GIT_EXEC_PATH="$(git --exec-path)"
 185 GIT_DIR="$fqgitdir"
 186 GITWEB_CONFIG="$fqgitdir/gitweb/gitweb_config.perl"
 187 export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
 188
 189 webrick_conf () {
 190         # generate a standalone server script in $fqgitdir/gitweb.
 191         cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
 192 require 'webrick'
 193 require 'yaml'
 194 options = YAML::load_file(ARGV[0])
 195 options[:StartCallback] = proc do
 196   File.open(options[:PidFile],"w") do |f|
 197     f.puts Process.pid
 198   end
 199 end
 200 options[:ServerType] = WEBrick::Daemon
 201 server = WEBrick::HTTPServer.new(options)
 202 ['INT', 'TERM'].each do |signal|
 203   trap(signal) {server.shutdown}
 204 end
 205 server.start
 206 EOF
 207         # generate a shell script to invoke the above ruby script,
 208         # which assumes _ruby_ is in the user's $PATH. that's _one_
 209         # portable way to run ruby, which could be installed anywhere,
 210         # really.
 211         cat >"$fqgitdir/gitweb/$httpd" <<EOF
 212 #!/bin/sh
 213 exec ruby "$fqgitdir/gitweb/$httpd.rb" \$*
 214 EOF
 215         chmod +x "$fqgitdir/gitweb/$httpd"
 216
 217         cat >"$conf" <<EOF
 218 :Port: $port
 219 :DocumentRoot: "$root"
 220 :DirectoryIndex: ["gitweb.cgi"]
 221 :PidFile: "$fqgitdir/pid"
 222 EOF
 223         test "$local" = true && echo ':BindAddress: "127.0.0.1"' >> "$conf"
 224 }
 225
 226 lighttpd_conf () {
 227         cat > "$conf" <<EOF
 228 server.document-root = "$root"
 229 server.port = $port
 230 server.modules = ( "mod_setenv", "mod_cgi" )
 231 server.indexfiles = ( "gitweb.cgi" )
 232 server.pid-file = "$fqgitdir/pid"
 233 server.errorlog = "$fqgitdir/gitweb/$httpd_only/error.log"
 234
 235 # to enable, add "mod_access", "mod_accesslog" to server.modules
 236 # variable above and uncomment this
 237 #accesslog.filename = "$fqgitdir/gitweb/$httpd_only/access.log"
 238
 239 setenv.add-environment = ( "PATH" => env.PATH, "GITWEB_CONFIG" => env.GITWEB_CONFIG )
 240
 241 cgi.assign = ( ".cgi" => "" )
 242
 243 # mimetype mapping
 244 mimetype.assign             = (
 245   ".pdf"          =>      "application/pdf",
 246   ".sig"          =>      "application/pgp-signature",
 247   ".spl"          =>      "application/futuresplash",
 248   ".class"        =>      "application/octet-stream",
 249   ".ps"           =>      "application/postscript",
 250   ".torrent"      =>      "application/x-bittorrent",
 251   ".dvi"          =>      "application/x-dvi",
 252   ".gz"           =>      "application/x-gzip",
 253   ".pac"          =>      "application/x-ns-proxy-autoconfig",
 254   ".swf"          =>      "application/x-shockwave-flash",
 255   ".tar.gz"       =>      "application/x-tgz",
 256   ".tgz"          =>      "application/x-tgz",
 257   ".tar"          =>      "application/x-tar",
 258   ".zip"          =>      "application/zip",
 259   ".mp3"          =>      "audio/mpeg",
 260   ".m3u"          =>      "audio/x-mpegurl",
 261   ".wma"          =>      "audio/x-ms-wma",
 262   ".wax"          =>      "audio/x-ms-wax",
 263   ".ogg"          =>      "application/ogg",
 264   ".wav"          =>      "audio/x-wav",
 265   ".gif"          =>      "image/gif",
 266   ".jpg"          =>      "image/jpeg",
 267   ".jpeg"         =>      "image/jpeg",
 268   ".png"          =>      "image/png",
 269   ".xbm"          =>      "image/x-xbitmap",
 270   ".xpm"          =>      "image/x-xpixmap",
 271   ".xwd"          =>      "image/x-xwindowdump",
 272   ".css"          =>      "text/css",
 273   ".html"         =>      "text/html",
 274   ".htm"          =>      "text/html",
 275   ".js"           =>      "text/javascript",
 276   ".asc"          =>      "text/plain",
 277   ".c"            =>      "text/plain",
 278   ".cpp"          =>      "text/plain",
 279   ".log"          =>      "text/plain",
 280   ".conf"         =>      "text/plain",
 281   ".text"         =>      "text/plain",
 282   ".txt"          =>      "text/plain",
 283   ".dtd"          =>      "text/xml",
 284   ".xml"          =>      "text/xml",
 285   ".mpeg"         =>      "video/mpeg",
 286   ".mpg"          =>      "video/mpeg",
 287   ".mov"          =>      "video/quicktime",
 288   ".qt"           =>      "video/quicktime",
 289   ".avi"          =>      "video/x-msvideo",
 290   ".asf"          =>      "video/x-ms-asf",
 291   ".asx"          =>      "video/x-ms-asf",
 292   ".wmv"          =>      "video/x-ms-wmv",
 293   ".bz2"          =>      "application/x-bzip",
 294   ".tbz"          =>      "application/x-bzip-compressed-tar",
 295   ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
 296   ""              =>      "text/plain"
 297  )
 298 EOF
 299         test x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$conf"
 300 }
 301
 302 apache2_conf () {
 303         test -z "$module_path" && module_path=/usr/lib/apache2/modules
 304         bind=
 305         test x"$local" = xtrue && bind='127.0.0.1:'
 306         echo 'text/css css' > "$fqgitdir/mime.types"
 307         cat > "$conf" <<EOF
 308 ServerName "git-instaweb"
 309 ServerRoot "$root"
 310 DocumentRoot "$root"
 311 ErrorLog "$fqgitdir/gitweb/$httpd_only/error.log"
 312 CustomLog "$fqgitdir/gitweb/$httpd_only/access.log" combined
 313 PidFile "$fqgitdir/pid"
 314 Listen $bind$port
 315 EOF
 316
 317         for mod in mime dir; do
 318                 if test -e $module_path/mod_${mod}.so; then
 319                         echo "LoadModule ${mod}_module " \
 320                              "$module_path/mod_${mod}.so" >> "$conf"
 321                 fi
 322         done
 323         cat >> "$conf" <<EOF
 324 TypesConfig "$fqgitdir/mime.types"
 325 DirectoryIndex gitweb.cgi
 326 EOF
 327
 328         # check to see if Dennis Stosberg's mod_perl compatibility patch
 329         # (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
 330         if test -f "$module_path/mod_perl.so" &&
 331            sane_grep 'MOD_PERL' "$root/gitweb.cgi" >/dev/null
 332         then
 333                 # favor mod_perl if available
 334                 cat >> "$conf" <<EOF
 335 LoadModule perl_module $module_path/mod_perl.so
 336 PerlPassEnv GIT_DIR
 337 PerlPassEnv GIT_EXEC_DIR
 338 PerlPassEnv GITWEB_CONFIG
 339 <Location /gitweb.cgi>
 340         SetHandler perl-script
 341         PerlResponseHandler ModPerl::Registry
 342         PerlOptions +ParseHeaders
 343         Options +ExecCGI
 344 </Location>
 345 EOF
 346         else
 347                 # plain-old CGI
 348                 resolve_full_httpd
 349                 list_mods=$(echo "$full_httpd" | sed 's/-f$/-l/')
 350                 $list_mods | sane_grep 'mod_cgi\.c' >/dev/null 2>&1 || \
 351                 if test -f "$module_path/mod_cgi.so"
 352                 then
 353                         echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
 354                 else
 355                         $list_mods | grep 'mod_cgid\.c' >/dev/null 2>&1 || \
 356                         if test -f "$module_path/mod_cgid.so"
 357                         then
 358                                 echo "LoadModule cgid_module $module_path/mod_cgid.so" \
 359                                         >> "$conf"
 360                         else
 361                                 echo "You have no CGI support!"
 362                                 exit 2
 363                         fi
 364                         echo "ScriptSock logs/gitweb.sock" >> "$conf"
 365                 fi
 366                 cat >> "$conf" <<EOF
 367 AddHandler cgi-script .cgi
 368 <Location /gitweb.cgi>
 369         Options +ExecCGI
 370 </Location>
 371 EOF
 372         fi
 373 }
 374
 375 mongoose_conf() {
 376         cat > "$conf" <<EOF
 377 # Mongoose web server configuration file.
 378 # Lines starting with '#' and empty lines are ignored.
 379 # For detailed description of every option, visit
 380 # http://code.google.com/p/mongoose/wiki/MongooseManual
 381
 382 root            $root
 383 ports           $port
 384 index_files     gitweb.cgi
 385 #ssl_cert       $fqgitdir/gitweb/ssl_cert.pem
 386 error_log       $fqgitdir/gitweb/$httpd_only/error.log
 387 access_log      $fqgitdir/gitweb/$httpd_only/access.log
 388
 389 #cgi setup
 390 cgi_env         PATH=$PATH,GIT_DIR=$GIT_DIR,GIT_EXEC_PATH=$GIT_EXEC_PATH,GITWEB_CONFIG=$GITWEB_CONFIG
 391 cgi_interp      $PERL
 392 cgi_ext         cgi,pl
 393
 394 # mimetype mapping
 395 mime_types      .gz=application/x-gzip,.tar.gz=application/x-tgz,.tgz=application/x-tgz,.tar=application/x-tar,.zip=application/zip,.gif=image/gif,.jpg=image/jpeg,.jpeg=image/jpeg,.png=image/png,.css=text/css,.html=text/html,.htm=text/html,.js=text/javascript,.c=text/plain,.cpp=text/plain,.log=text/plain,.conf=text/plain,.text=text/plain,.txt=text/plain,.dtd=text/xml,.bz2=application/x-bzip,.tbz=application/x-bzip-compressed-tar,.tar.bz2=application/x-bzip-compressed-tar
 396 EOF
 397 }
 398
 399 plackup_conf () {
 400         # generate a standalone 'plackup' server script in $fqgitdir/gitweb
 401         # with embedded configuration; it does not use "$conf" file
 402         cat > "$fqgitdir/gitweb/gitweb.psgi" <<EOF
 403 #!$PERL
 404
 405 # gitweb - simple web interface to track changes in git repositories
 406 #          PSGI wrapper and server starter (see http://plackperl.org)
 407
 408 use strict;
 409
 410 use IO::Handle;
 411 use Plack::MIME;
 412 use Plack::Builder;
 413 use Plack::App::WrapCGI;
 414 use CGI::Emulate::PSGI 0.07; # minimum version required to work with gitweb
 415
 416 # mimetype mapping (from lighttpd_conf)
 417 Plack::MIME->add_type(
 418         ".pdf"          =>      "application/pdf",
 419         ".sig"          =>      "application/pgp-signature",
 420         ".spl"          =>      "application/futuresplash",
 421         ".class"        =>      "application/octet-stream",
 422         ".ps"           =>      "application/postscript",
 423         ".torrent"      =>      "application/x-bittorrent",
 424         ".dvi"          =>      "application/x-dvi",
 425         ".gz"           =>      "application/x-gzip",
 426         ".pac"          =>      "application/x-ns-proxy-autoconfig",
 427         ".swf"          =>      "application/x-shockwave-flash",
 428         ".tar.gz"       =>      "application/x-tgz",
 429         ".tgz"          =>      "application/x-tgz",
 430         ".tar"          =>      "application/x-tar",
 431         ".zip"          =>      "application/zip",
 432         ".mp3"          =>      "audio/mpeg",
 433         ".m3u"          =>      "audio/x-mpegurl",
 434         ".wma"          =>      "audio/x-ms-wma",
 435         ".wax"          =>      "audio/x-ms-wax",
 436         ".ogg"          =>      "application/ogg",
 437         ".wav"          =>      "audio/x-wav",
 438         ".gif"          =>      "image/gif",
 439         ".jpg"          =>      "image/jpeg",
 440         ".jpeg"         =>      "image/jpeg",
 441         ".png"          =>      "image/png",
 442         ".xbm"          =>      "image/x-xbitmap",
 443         ".xpm"          =>      "image/x-xpixmap",
 444         ".xwd"          =>      "image/x-xwindowdump",
 445         ".css"          =>      "text/css",
 446         ".html"         =>      "text/html",
 447         ".htm"          =>      "text/html",
 448         ".js"           =>      "text/javascript",
 449         ".asc"          =>      "text/plain",
 450         ".c"            =>      "text/plain",
 451         ".cpp"          =>      "text/plain",
 452         ".log"          =>      "text/plain",
 453         ".conf"         =>      "text/plain",
 454         ".text"         =>      "text/plain",
 455         ".txt"          =>      "text/plain",
 456         ".dtd"          =>      "text/xml",
 457         ".xml"          =>      "text/xml",
 458         ".mpeg"         =>      "video/mpeg",
 459         ".mpg"          =>      "video/mpeg",
 460         ".mov"          =>      "video/quicktime",
 461         ".qt"           =>      "video/quicktime",
 462         ".avi"          =>      "video/x-msvideo",
 463         ".asf"          =>      "video/x-ms-asf",
 464         ".asx"          =>      "video/x-ms-asf",
 465         ".wmv"          =>      "video/x-ms-wmv",
 466         ".bz2"          =>      "application/x-bzip",
 467         ".tbz"          =>      "application/x-bzip-compressed-tar",
 468         ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
 469         ""              =>      "text/plain"
 470 );
 471
 472 my \$app = builder {
 473         # to be able to override \$SIG{__WARN__} to log build time warnings
 474         use CGI::Carp; # it sets \$SIG{__WARN__} itself
 475
 476         my \$logdir = "$fqgitdir/gitweb/$httpd_only";
 477         open my \$access_log_fh, '>>', "\$logdir/access.log"
 478                 or die "Couldn't open access log '\$logdir/access.log': \$!";
 479         open my \$error_log_fh,  '>>', "\$logdir/error.log"
 480                 or die "Couldn't open error log '\$logdir/error.log': \$!";
 481
 482         \$access_log_fh->autoflush(1);
 483         \$error_log_fh->autoflush(1);
 484
 485         # redirect build time warnings to error.log
 486         \$SIG{'__WARN__'} = sub {
 487                 my \$msg = shift;
 488                 # timestamp warning like in CGI::Carp::warn
 489                 my \$stamp = CGI::Carp::stamp();
 490                 \$msg =~ s/^/\$stamp/gm;
 491                 print \$error_log_fh \$msg;
 492         };
 493
 494         # write errors to error.log, access to access.log
 495         enable 'AccessLog',
 496                 format => "combined",
 497                 logger => sub { print \$access_log_fh @_; };
 498         enable sub {
 499                 my \$app = shift;
 500                 sub {
 501                         my \$env = shift;
 502                         \$env->{'psgi.errors'} = \$error_log_fh;
 503                         \$app->(\$env);
 504                 }
 505         };
 506         # gitweb currently doesn't work with $SIG{CHLD} set to 'IGNORE',
 507         # because it uses 'close $fd or die...' on piped filehandle $fh
 508         # (which causes the parent process to wait for child to finish).
 509         enable_if { \$SIG{'CHLD'} eq 'IGNORE' } sub {
 510                 my \$app = shift;
 511                 sub {
 512                         my \$env = shift;
 513                         local \$SIG{'CHLD'} = 'DEFAULT';
 514                         local \$SIG{'CLD'}  = 'DEFAULT';
 515                         \$app->(\$env);
 516                 }
 517         };
 518         # serve static files, i.e. stylesheet, images, script
 519         enable 'Static',
 520                 path => sub { m!\.(js|css|png)\$! && s!^/gitweb/!! },
 521                 root => "$root/",
 522                 encoding => 'utf-8'; # encoding for 'text/plain' files
 523         # convert CGI application to PSGI app
 524         Plack::App::WrapCGI->new(script => "$root/gitweb.cgi")->to_app;
 525 };
 526
 527 # make it runnable as standalone app,
 528 # like it would be run via 'plackup' utility
 529 if (__FILE__ eq \$0) {
 530         require Plack::Runner;
 531
 532         my \$runner = Plack::Runner->new();
 533         \$runner->parse_options(qw(--env deployment --port $port),
 534                                "$local" ? qw(--host 127.0.0.1) : ());
 535         \$runner->run(\$app);
 536 }
 537 __END__
 538 EOF
 539
 540         chmod a+x "$fqgitdir/gitweb/gitweb.psgi"
 541         # configuration is embedded in server script file, gitweb.psgi
 542         rm -f "$conf"
 543 }
 544
 545 gitweb_conf() {
 546         cat > "$fqgitdir/gitweb/gitweb_config.perl" <<EOF
 547 #!/usr/bin/perl
 548 our \$projectroot = "$(dirname "$fqgitdir")";
 549 our \$git_temp = "$fqgitdir/gitweb/tmp";
 550 our \$projects_list = \$projectroot;
 551 EOF
 552 }
 553
 554 gitweb_conf
 555
 556 resolve_full_httpd
 557 mkdir -p "$fqgitdir/gitweb/$httpd_only"
 558
 559 case "$httpd" in
 560 *lighttpd*)
 561         lighttpd_conf
 562         ;;
 563 *apache2*)
 564         apache2_conf
 565         ;;
 566 webrick)
 567         webrick_conf
 568         ;;
 569 *mongoose*)
 570         mongoose_conf
 571         ;;
 572 *plackup*)
 573         plackup_conf
 574         ;;
 575 *)
 576         echo "Unknown httpd specified: $httpd"
 577         exit 1
 578         ;;
 579 esac
 580
 581 start_httpd
 582 url=http://127.0.0.1:$port
 583
 584 if test -n "$browser"; then
 585         httpd_is_ready && git web--browse -b "$browser" $url || echo $url
 586 else
 587         httpd_is_ready && git web--browse -c "instaweb.browser" $url || echo $url
 588 fi