git-instaweb.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Eric Wong
   4 #
   5
   6 PERL='@@PERL@@'
   7 OPTIONS_KEEPDASHDASH=
   8 OPTIONS_STUCKLONG=
   9 OPTIONS_SPEC="\
  10 git instaweb [options] (--start | --stop | --restart)
  11 --
  12 l,local        only bind on 127.0.0.1
  13 p,port=        the port to bind to
  14 d,httpd=       the command to launch
  15 b,browser=     the browser to launch
  16 m,module-path= the module path (only needed for apache2)
  17  Action
  18 stop           stop the web server
  19 start          start the web server
  20 restart        restart the web server
  21 "
  22
  23 SUBDIRECTORY_OK=Yes
  24 . git-sh-setup
  25
  26 fqgitdir="$GIT_DIR"
  27 local="$(git config --bool --get instaweb.local)"
  28 httpd="$(git config --get instaweb.httpd)"
  29 root="$(git config --get instaweb.gitwebdir)"
  30 port=$(git config --get instaweb.port)
  31 module_path="$(git config --get instaweb.modulepath)"
  32 action="browse"
  33
  34 conf="$GIT_DIR/gitweb/httpd.conf"
  35
  36 # Defaults:
  37
  38 # if installed, it doesn't need further configuration (module_path)
  39 test -z "$httpd" && httpd='lighttpd -f'
  40
  41 # Default is @@GITWEBDIR@@
  42 test -z "$root" && root='@@GITWEBDIR@@'
  43
  44 # any untaken local port will do...
  45 test -z "$port" && port=1234
  46
  47 resolve_full_httpd () {
  48         case "$httpd" in
  49         *apache2*|*lighttpd*|*httpd*)
  50                 # yes, *httpd* covers *lighttpd* above, but it is there for clarity
  51                 # ensure that the apache2/lighttpd command ends with "-f"
  52                 if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1
  53                 then
  54                         httpd="$httpd -f"
  55                 fi
  56                 ;;
  57         *plackup*)
  58                 # server is started by running via generated gitweb.psgi in $fqgitdir/gitweb
  59                 full_httpd="$fqgitdir/gitweb/gitweb.psgi"
  60                 httpd_only="${httpd%% *}" # cut on first space
  61                 return
  62                 ;;
  63         *webrick*)
  64                 # server is started by running via generated webrick.rb in
  65                 # $fqgitdir/gitweb
  66                 full_httpd="$fqgitdir/gitweb/webrick.rb"
  67                 httpd_only="${httpd%% *}" # cut on first space
  68                 return
  69                 ;;
  70         *python*)
  71                 # server is started by running via generated gitweb.py in
  72                 # $fqgitdir/gitweb
  73                 full_httpd="$fqgitdir/gitweb/gitweb.py"
  74                 httpd_only="${httpd%% *}" # cut on first space
  75                 return
  76                 ;;
  77         esac
  78
  79         httpd_only="$(echo $httpd | cut -f1 -d' ')"
  80         if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null 2>&1;; esac
  81         then
  82                 full_httpd=$httpd
  83         else
  84                 # many httpds are installed in /usr/sbin or /usr/local/sbin
  85                 # these days and those are not in most users $PATHs
  86                 # in addition, we may have generated a server script
  87                 # in $fqgitdir/gitweb.
  88                 for i in /usr/local/sbin /usr/sbin "$root" "$fqgitdir/gitweb"
  89                 do
  90                         if test -x "$i/$httpd_only"
  91                         then
  92                                 full_httpd=$i/$httpd
  93                                 return
  94                         fi
  95                 done
  96
  97                 echo >&2 "$httpd_only not found. Install $httpd_only or use" \
  98                      "--httpd to specify another httpd daemon."
  99                 exit 1
 100         fi
 101 }
 102
 103 start_httpd () {
 104         if test -f "$fqgitdir/pid"; then
 105                 say "Instance already running. Restarting..."
 106                 stop_httpd
 107         fi
 108
 109         # here $httpd should have a meaningful value
 110         resolve_full_httpd
 111         mkdir -p "$fqgitdir/gitweb/$httpd_only"
 112         conf="$fqgitdir/gitweb/$httpd_only.conf"
 113
 114         # generate correct config file if it doesn't exist
 115         test -f "$conf" || configure_httpd
 116         test -f "$fqgitdir/gitweb/gitweb_config.perl" || gitweb_conf
 117
 118         # don't quote $full_httpd, there can be arguments to it (-f)
 119         case "$httpd" in
 120         *mongoose*|*plackup*|*python*)
 121                 #These servers don't have a daemon mode so we'll have to fork it
 122                 $full_httpd "$conf" &
 123                 #Save the pid before doing anything else (we'll print it later)
 124                 pid=$!
 125
 126                 if test $? != 0; then
 127                         echo "Could not execute http daemon $httpd."
 128                         exit 1
 129                 fi
 130
 131                 cat > "$fqgitdir/pid" <<EOF
 132 $pid
 133 EOF
 134                 ;;
 135         *)
 136                 $full_httpd "$conf"
 137                 if test $? != 0; then
 138                         echo "Could not execute http daemon $httpd."
 139                         exit 1
 140                 fi
 141                 ;;
 142         esac
 143 }
 144
 145 stop_httpd () {
 146         test -f "$fqgitdir/pid" && kill $(cat "$fqgitdir/pid")
 147         rm -f "$fqgitdir/pid"
 148 }
 149
 150 httpd_is_ready () {
 151         "$PERL" -MIO::Socket::INET -e "
 152 local \$| = 1; # turn on autoflush
 153 exit if (IO::Socket::INET->new('127.0.0.1:$port'));
 154 print 'Waiting for \'$httpd\' to start ..';
 155 do {
 156         print '.';
 157         sleep(1);
 158 } until (IO::Socket::INET->new('127.0.0.1:$port'));
 159 print qq! (done)\n!;
 160 "
 161 }
 162
 163 while test $# != 0
 164 do
 165         case "$1" in
 166         --stop|stop)
 167                 action="stop"
 168                 ;;
 169         --start|start)
 170                 action="start"
 171                 ;;
 172         --restart|restart)
 173                 action="restart"
 174                 ;;
 175         -l|--local)
 176                 local=true
 177                 ;;
 178         -d|--httpd)
 179                 shift
 180                 httpd="$1"
 181                 ;;
 182         -b|--browser)
 183                 shift
 184                 browser="$1"
 185                 ;;
 186         -p|--port)
 187                 shift
 188                 port="$1"
 189                 ;;
 190         -m|--module-path)
 191                 shift
 192                 module_path="$1"
 193                 ;;
 194         --)
 195                 ;;
 196         *)
 197                 usage
 198                 ;;
 199         esac
 200         shift
 201 done
 202
 203 mkdir -p "$GIT_DIR/gitweb/tmp"
 204 GIT_EXEC_PATH="$(git --exec-path)"
 205 GIT_DIR="$fqgitdir"
 206 GITWEB_CONFIG="$fqgitdir/gitweb/gitweb_config.perl"
 207 export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
 208
 209 webrick_conf () {
 210         # webrick seems to have no way of passing arbitrary environment
 211         # variables to the underlying CGI executable, so we wrap the
 212         # actual gitweb.cgi using a shell script to force it
 213   wrapper="$fqgitdir/gitweb/$httpd/wrapper.sh"
 214         cat > "$wrapper" <<EOF
 215 #!@SHELL_PATH@
 216 # we use this shell script wrapper around the real gitweb.cgi since
 217 # there appears to be no other way to pass arbitrary environment variables
 218 # into the CGI process
 219 GIT_EXEC_PATH=$GIT_EXEC_PATH GIT_DIR=$GIT_DIR GITWEB_CONFIG=$GITWEB_CONFIG
 220 export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
 221 exec $root/gitweb.cgi
 222 EOF
 223         chmod +x "$wrapper"
 224
 225         # This assumes _ruby_ is in the user's $PATH. that's _one_
 226         # portable way to run ruby, which could be installed anywhere, really.
 227         # generate a standalone server script in $fqgitdir/gitweb.
 228         cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
 229 #!/usr/bin/env ruby
 230 require 'webrick'
 231 require 'logger'
 232 options = {
 233   :Port => $port,
 234   :DocumentRoot => "$root",
 235   :Logger => Logger.new('$fqgitdir/gitweb/error.log'),
 236   :AccessLog => [
 237     [ Logger.new('$fqgitdir/gitweb/access.log'),
 238       WEBrick::AccessLog::COMBINED_LOG_FORMAT ]
 239   ],
 240   :DirectoryIndex => ["gitweb.cgi"],
 241   :CGIInterpreter => "$wrapper",
 242   :StartCallback => lambda do
 243     File.open("$fqgitdir/pid", "w") { |f| f.puts Process.pid }
 244   end,
 245   :ServerType => WEBrick::Daemon,
 246 }
 247 options[:BindAddress] = '127.0.0.1' if "$local" == "true"
 248 server = WEBrick::HTTPServer.new(options)
 249 ['INT', 'TERM'].each do |signal|
 250   trap(signal) {server.shutdown}
 251 end
 252 server.start
 253 EOF
 254         chmod +x "$fqgitdir/gitweb/$httpd.rb"
 255         # configuration is embedded in server script file, webrick.rb
 256         rm -f "$conf"
 257 }
 258
 259 lighttpd_conf () {
 260         cat > "$conf" <<EOF
 261 server.document-root = "$root"
 262 server.port = $port
 263 server.modules = ( "mod_setenv", "mod_cgi" )
 264 server.indexfiles = ( "gitweb.cgi" )
 265 server.pid-file = "$fqgitdir/pid"
 266 server.errorlog = "$fqgitdir/gitweb/$httpd_only/error.log"
 267
 268 # to enable, add "mod_access", "mod_accesslog" to server.modules
 269 # variable above and uncomment this
 270 #accesslog.filename = "$fqgitdir/gitweb/$httpd_only/access.log"
 271
 272 setenv.add-environment = ( "PATH" => env.PATH, "GITWEB_CONFIG" => env.GITWEB_CONFIG )
 273
 274 cgi.assign = ( ".cgi" => "" )
 275
 276 # mimetype mapping
 277 mimetype.assign             = (
 278   ".pdf"          =>      "application/pdf",
 279   ".sig"          =>      "application/pgp-signature",
 280   ".spl"          =>      "application/futuresplash",
 281   ".class"        =>      "application/octet-stream",
 282   ".ps"           =>      "application/postscript",
 283   ".torrent"      =>      "application/x-bittorrent",
 284   ".dvi"          =>      "application/x-dvi",
 285   ".gz"           =>      "application/x-gzip",
 286   ".pac"          =>      "application/x-ns-proxy-autoconfig",
 287   ".swf"          =>      "application/x-shockwave-flash",
 288   ".tar.gz"       =>      "application/x-tgz",
 289   ".tgz"          =>      "application/x-tgz",
 290   ".tar"          =>      "application/x-tar",
 291   ".zip"          =>      "application/zip",
 292   ".mp3"          =>      "audio/mpeg",
 293   ".m3u"          =>      "audio/x-mpegurl",
 294   ".wma"          =>      "audio/x-ms-wma",
 295   ".wax"          =>      "audio/x-ms-wax",
 296   ".ogg"          =>      "application/ogg",
 297   ".wav"          =>      "audio/x-wav",
 298   ".gif"          =>      "image/gif",
 299   ".jpg"          =>      "image/jpeg",
 300   ".jpeg"         =>      "image/jpeg",
 301   ".png"          =>      "image/png",
 302   ".xbm"          =>      "image/x-xbitmap",
 303   ".xpm"          =>      "image/x-xpixmap",
 304   ".xwd"          =>      "image/x-xwindowdump",
 305   ".css"          =>      "text/css",
 306   ".html"         =>      "text/html",
 307   ".htm"          =>      "text/html",
 308   ".js"           =>      "text/javascript",
 309   ".asc"          =>      "text/plain",
 310   ".c"            =>      "text/plain",
 311   ".cpp"          =>      "text/plain",
 312   ".log"          =>      "text/plain",
 313   ".conf"         =>      "text/plain",
 314   ".text"         =>      "text/plain",
 315   ".txt"          =>      "text/plain",
 316   ".dtd"          =>      "text/xml",
 317   ".xml"          =>      "text/xml",
 318   ".mpeg"         =>      "video/mpeg",
 319   ".mpg"          =>      "video/mpeg",
 320   ".mov"          =>      "video/quicktime",
 321   ".qt"           =>      "video/quicktime",
 322   ".avi"          =>      "video/x-msvideo",
 323   ".asf"          =>      "video/x-ms-asf",
 324   ".asx"          =>      "video/x-ms-asf",
 325   ".wmv"          =>      "video/x-ms-wmv",
 326   ".bz2"          =>      "application/x-bzip",
 327   ".tbz"          =>      "application/x-bzip-compressed-tar",
 328   ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
 329   ""              =>      "text/plain"
 330  )
 331 EOF
 332         test x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$conf"
 333 }
 334
 335 apache2_conf () {
 336         for candidate in \
 337                 /etc/httpd \
 338                 /usr/lib/apache2 \
 339                 /usr/lib/httpd ;
 340         do
 341                 if test -d "$candidate/modules"
 342                 then
 343                         module_path="$candidate/modules"
 344                         break
 345                 fi
 346         done
 347         bind=
 348         test x"$local" = xtrue && bind='127.0.0.1:'
 349         echo 'text/css css' > "$fqgitdir/mime.types"
 350         cat > "$conf" <<EOF
 351 ServerName "git-instaweb"
 352 ServerRoot "$root"
 353 DocumentRoot "$root"
 354 ErrorLog "$fqgitdir/gitweb/$httpd_only/error.log"
 355 CustomLog "$fqgitdir/gitweb/$httpd_only/access.log" combined
 356 PidFile "$fqgitdir/pid"
 357 Listen $bind$port
 358 EOF
 359
 360         for mod in mpm_event mpm_prefork mpm_worker
 361         do
 362                 if test -e $module_path/mod_${mod}.so
 363                 then
 364                         echo "LoadModule ${mod}_module " \
 365                              "$module_path/mod_${mod}.so" >> "$conf"
 366                         # only one mpm module permitted
 367                         break
 368                 fi
 369         done
 370         for mod in mime dir env log_config authz_core unixd
 371         do
 372                 if test -e $module_path/mod_${mod}.so
 373                 then
 374                         echo "LoadModule ${mod}_module " \
 375                              "$module_path/mod_${mod}.so" >> "$conf"
 376                 fi
 377         done
 378         cat >> "$conf" <<EOF
 379 TypesConfig "$fqgitdir/mime.types"
 380 DirectoryIndex gitweb.cgi
 381 EOF
 382
 383         # check to see if Dennis Stosberg's mod_perl compatibility patch
 384         # (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
 385         if test -f "$module_path/mod_perl.so" &&
 386            sane_grep 'MOD_PERL' "$root/gitweb.cgi" >/dev/null
 387         then
 388                 # favor mod_perl if available
 389                 cat >> "$conf" <<EOF
 390 LoadModule perl_module $module_path/mod_perl.so
 391 PerlPassEnv GIT_DIR
 392 PerlPassEnv GIT_EXEC_PATH
 393 PerlPassEnv GITWEB_CONFIG
 394 <Location /gitweb.cgi>
 395         SetHandler perl-script
 396         PerlResponseHandler ModPerl::Registry
 397         PerlOptions +ParseHeaders
 398         Options +ExecCGI
 399 </Location>
 400 EOF
 401         else
 402                 # plain-old CGI
 403                 resolve_full_httpd
 404                 list_mods=$(echo "$full_httpd" | sed 's/-f$/-l/')
 405                 $list_mods | sane_grep 'mod_cgi\.c' >/dev/null 2>&1 || \
 406                 if test -f "$module_path/mod_cgi.so"
 407                 then
 408                         echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
 409                 else
 410                         $list_mods | grep 'mod_cgid\.c' >/dev/null 2>&1 || \
 411                         if test -f "$module_path/mod_cgid.so"
 412                         then
 413                                 echo "LoadModule cgid_module $module_path/mod_cgid.so" \
 414                                         >> "$conf"
 415                         else
 416                                 echo "You have no CGI support!"
 417                                 exit 2
 418                         fi
 419                         echo "ScriptSock logs/gitweb.sock" >> "$conf"
 420                 fi
 421                 cat >> "$conf" <<EOF
 422 PassEnv GIT_DIR
 423 PassEnv GIT_EXEC_PATH
 424 PassEnv GITWEB_CONFIG
 425 AddHandler cgi-script .cgi
 426 <Location /gitweb.cgi>
 427         Options +ExecCGI
 428 </Location>
 429 EOF
 430         fi
 431 }
 432
 433 mongoose_conf() {
 434         cat > "$conf" <<EOF
 435 # Mongoose web server configuration file.
 436 # Lines starting with '#' and empty lines are ignored.
 437 # For detailed description of every option, visit
 438 # http://code.google.com/p/mongoose/wiki/MongooseManual
 439
 440 root            $root
 441 ports           $port
 442 index_files     gitweb.cgi
 443 #ssl_cert       $fqgitdir/gitweb/ssl_cert.pem
 444 error_log       $fqgitdir/gitweb/$httpd_only/error.log
 445 access_log      $fqgitdir/gitweb/$httpd_only/access.log
 446
 447 #cgi setup
 448 cgi_env         PATH=$PATH,GIT_DIR=$GIT_DIR,GIT_EXEC_PATH=$GIT_EXEC_PATH,GITWEB_CONFIG=$GITWEB_CONFIG
 449 cgi_interp      $PERL
 450 cgi_ext         cgi,pl
 451
 452 # mimetype mapping
 453 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
 454 EOF
 455 }
 456
 457 plackup_conf () {
 458         # generate a standalone 'plackup' server script in $fqgitdir/gitweb
 459         # with embedded configuration; it does not use "$conf" file
 460         cat > "$fqgitdir/gitweb/gitweb.psgi" <<EOF
 461 #!$PERL
 462
 463 # gitweb - simple web interface to track changes in git repositories
 464 #          PSGI wrapper and server starter (see http://plackperl.org)
 465
 466 use strict;
 467
 468 use IO::Handle;
 469 use Plack::MIME;
 470 use Plack::Builder;
 471 use Plack::App::WrapCGI;
 472 use CGI::Emulate::PSGI 0.07; # minimum version required to work with gitweb
 473
 474 # mimetype mapping (from lighttpd_conf)
 475 Plack::MIME->add_type(
 476         ".pdf"          =>      "application/pdf",
 477         ".sig"          =>      "application/pgp-signature",
 478         ".spl"          =>      "application/futuresplash",
 479         ".class"        =>      "application/octet-stream",
 480         ".ps"           =>      "application/postscript",
 481         ".torrent"      =>      "application/x-bittorrent",
 482         ".dvi"          =>      "application/x-dvi",
 483         ".gz"           =>      "application/x-gzip",
 484         ".pac"          =>      "application/x-ns-proxy-autoconfig",
 485         ".swf"          =>      "application/x-shockwave-flash",
 486         ".tar.gz"       =>      "application/x-tgz",
 487         ".tgz"          =>      "application/x-tgz",
 488         ".tar"          =>      "application/x-tar",
 489         ".zip"          =>      "application/zip",
 490         ".mp3"          =>      "audio/mpeg",
 491         ".m3u"          =>      "audio/x-mpegurl",
 492         ".wma"          =>      "audio/x-ms-wma",
 493         ".wax"          =>      "audio/x-ms-wax",
 494         ".ogg"          =>      "application/ogg",
 495         ".wav"          =>      "audio/x-wav",
 496         ".gif"          =>      "image/gif",
 497         ".jpg"          =>      "image/jpeg",
 498         ".jpeg"         =>      "image/jpeg",
 499         ".png"          =>      "image/png",
 500         ".xbm"          =>      "image/x-xbitmap",
 501         ".xpm"          =>      "image/x-xpixmap",
 502         ".xwd"          =>      "image/x-xwindowdump",
 503         ".css"          =>      "text/css",
 504         ".html"         =>      "text/html",
 505         ".htm"          =>      "text/html",
 506         ".js"           =>      "text/javascript",
 507         ".asc"          =>      "text/plain",
 508         ".c"            =>      "text/plain",
 509         ".cpp"          =>      "text/plain",
 510         ".log"          =>      "text/plain",
 511         ".conf"         =>      "text/plain",
 512         ".text"         =>      "text/plain",
 513         ".txt"          =>      "text/plain",
 514         ".dtd"          =>      "text/xml",
 515         ".xml"          =>      "text/xml",
 516         ".mpeg"         =>      "video/mpeg",
 517         ".mpg"          =>      "video/mpeg",
 518         ".mov"          =>      "video/quicktime",
 519         ".qt"           =>      "video/quicktime",
 520         ".avi"          =>      "video/x-msvideo",
 521         ".asf"          =>      "video/x-ms-asf",
 522         ".asx"          =>      "video/x-ms-asf",
 523         ".wmv"          =>      "video/x-ms-wmv",
 524         ".bz2"          =>      "application/x-bzip",
 525         ".tbz"          =>      "application/x-bzip-compressed-tar",
 526         ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
 527         ""              =>      "text/plain"
 528 );
 529
 530 my \$app = builder {
 531         # to be able to override \$SIG{__WARN__} to log build time warnings
 532         use CGI::Carp; # it sets \$SIG{__WARN__} itself
 533
 534         my \$logdir = "$fqgitdir/gitweb/$httpd_only";
 535         open my \$access_log_fh, '>>', "\$logdir/access.log"
 536                 or die "Couldn't open access log '\$logdir/access.log': \$!";
 537         open my \$error_log_fh,  '>>', "\$logdir/error.log"
 538                 or die "Couldn't open error log '\$logdir/error.log': \$!";
 539
 540         \$access_log_fh->autoflush(1);
 541         \$error_log_fh->autoflush(1);
 542
 543         # redirect build time warnings to error.log
 544         \$SIG{'__WARN__'} = sub {
 545                 my \$msg = shift;
 546                 # timestamp warning like in CGI::Carp::warn
 547                 my \$stamp = CGI::Carp::stamp();
 548                 \$msg =~ s/^/\$stamp/gm;
 549                 print \$error_log_fh \$msg;
 550         };
 551
 552         # write errors to error.log, access to access.log
 553         enable 'AccessLog',
 554                 format => "combined",
 555                 logger => sub { print \$access_log_fh @_; };
 556         enable sub {
 557                 my \$app = shift;
 558                 sub {
 559                         my \$env = shift;
 560                         \$env->{'psgi.errors'} = \$error_log_fh;
 561                         \$app->(\$env);
 562                 }
 563         };
 564         # gitweb currently doesn't work with $SIG{CHLD} set to 'IGNORE',
 565         # because it uses 'close $fd or die...' on piped filehandle $fh
 566         # (which causes the parent process to wait for child to finish).
 567         enable_if { \$SIG{'CHLD'} eq 'IGNORE' } sub {
 568                 my \$app = shift;
 569                 sub {
 570                         my \$env = shift;
 571                         local \$SIG{'CHLD'} = 'DEFAULT';
 572                         local \$SIG{'CLD'}  = 'DEFAULT';
 573                         \$app->(\$env);
 574                 }
 575         };
 576         # serve static files, i.e. stylesheet, images, script
 577         enable 'Static',
 578                 path => sub { m!\.(js|css|png)\$! && s!^/gitweb/!! },
 579                 root => "$root/",
 580                 encoding => 'utf-8'; # encoding for 'text/plain' files
 581         # convert CGI application to PSGI app
 582         Plack::App::WrapCGI->new(script => "$root/gitweb.cgi")->to_app;
 583 };
 584
 585 # make it runnable as standalone app,
 586 # like it would be run via 'plackup' utility
 587 if (caller) {
 588         return \$app;
 589 } else {
 590         require Plack::Runner;
 591
 592         my \$runner = Plack::Runner->new();
 593         \$runner->parse_options(qw(--env deployment --port $port),
 594                                 "$local" ? qw(--host 127.0.0.1) : ());
 595         \$runner->run(\$app);
 596 }
 597 __END__
 598 EOF
 599
 600         chmod a+x "$fqgitdir/gitweb/gitweb.psgi"
 601         # configuration is embedded in server script file, gitweb.psgi
 602         rm -f "$conf"
 603 }
 604
 605 python_conf() {
 606         # Python's builtin http.server and its CGI support is very limited.
 607         # CGI handler is capable of running CGI script only from inside a directory.
 608         # Trying to set cgi_directories=["/"] will add double slash to SCRIPT_NAME
 609         # and that in turn breaks gitweb's relative link generation.
 610
 611         # create a simple web root where $fqgitdir/gitweb/$httpd_only is our root
 612         mkdir -p "$fqgitdir/gitweb/$httpd_only/cgi-bin"
 613         # Python http.server follows the symlinks
 614         ln -sf "$root/gitweb.cgi" "$fqgitdir/gitweb/$httpd_only/cgi-bin/gitweb.cgi"
 615         ln -sf "$root/static" "$fqgitdir/gitweb/$httpd_only/"
 616
 617         # generate a standalone 'python http.server' script in $fqgitdir/gitweb
 618         # This asumes that python is in user's $PATH
 619         # This script is Python 2 and 3 compatible
 620         cat > "$fqgitdir/gitweb/gitweb.py" <<EOF
 621 #!/usr/bin/env python
 622 import os
 623 import sys
 624
 625 # Open log file in line buffering mode
 626 accesslogfile = open("$fqgitdir/gitweb/access.log", 'a', buffering=1)
 627 errorlogfile = open("$fqgitdir/gitweb/error.log", 'a', buffering=1)
 628
 629 # and replace our stdout and stderr with log files
 630 # also do a lowlevel duplicate of the logfile file descriptors so that
 631 # our CGI child process writes any stderr warning also to the log file
 632 _orig_stdout_fd = sys.stdout.fileno()
 633 sys.stdout.close()
 634 os.dup2(accesslogfile.fileno(), _orig_stdout_fd)
 635 sys.stdout = accesslogfile
 636
 637 _orig_stderr_fd = sys.stderr.fileno()
 638 sys.stderr.close()
 639 os.dup2(errorlogfile.fileno(), _orig_stderr_fd)
 640 sys.stderr = errorlogfile
 641
 642 from functools import partial
 643
 644 if sys.version_info < (3, 0):  # Python 2
 645         from CGIHTTPServer import CGIHTTPRequestHandler
 646         from BaseHTTPServer import HTTPServer as ServerClass
 647 else:  # Python 3
 648         from http.server import CGIHTTPRequestHandler
 649         from http.server import HTTPServer as ServerClass
 650
 651
 652 # Those environment variables will be passed to the cgi script
 653 os.environ.update({
 654         "GIT_EXEC_PATH": "$GIT_EXEC_PATH",
 655         "GIT_DIR": "$GIT_DIR",
 656         "GITWEB_CONFIG": "$GITWEB_CONFIG"
 657 })
 658
 659
 660 class GitWebRequestHandler(CGIHTTPRequestHandler):
 661
 662         def log_message(self, format, *args):
 663                 # Write access logs to stdout
 664                 sys.stdout.write("%s - - [%s] %s\n" %
 665                                 (self.address_string(),
 666                                 self.log_date_time_string(),
 667                                 format%args))
 668
 669         def do_HEAD(self):
 670                 self.redirect_path()
 671                 CGIHTTPRequestHandler.do_HEAD(self)
 672
 673         def do_GET(self):
 674                 if self.path == "/":
 675                         self.send_response(303, "See Other")
 676                         self.send_header("Location", "/cgi-bin/gitweb.cgi")
 677                         self.end_headers()
 678                         return
 679                 self.redirect_path()
 680                 CGIHTTPRequestHandler.do_GET(self)
 681
 682         def do_POST(self):
 683                 self.redirect_path()
 684                 CGIHTTPRequestHandler.do_POST(self)
 685
 686         # rewrite path of every request that is not gitweb.cgi to out of cgi-bin
 687         def redirect_path(self):
 688                 if not self.path.startswith("/cgi-bin/gitweb.cgi"):
 689                         self.path = self.path.replace("/cgi-bin/", "/")
 690
 691         # gitweb.cgi is the only thing that is ever going to be run here.
 692         # Ignore everything else
 693         def is_cgi(self):
 694                 result = False
 695                 if self.path.startswith('/cgi-bin/gitweb.cgi'):
 696                         result = CGIHTTPRequestHandler.is_cgi(self)
 697                 return result
 698
 699
 700 bind = "127.0.0.1"
 701 if "$local" == "true":
 702         bind = "0.0.0.0"
 703
 704 # Set our http root directory
 705 # This is a work around for a missing directory argument in older Python versions
 706 # as this was added to SimpleHTTPRequestHandler in Python 3.7
 707 os.chdir("$fqgitdir/gitweb/$httpd_only/")
 708
 709 GitWebRequestHandler.protocol_version = "HTTP/1.0"
 710 httpd = ServerClass((bind, $port), GitWebRequestHandler)
 711
 712 sa = httpd.socket.getsockname()
 713 print("Serving HTTP on", sa[0], "port", sa[1], "...")
 714 httpd.serve_forever()
 715 EOF
 716
 717         chmod a+x "$fqgitdir/gitweb/gitweb.py"
 718 }
 719
 720 gitweb_conf() {
 721         cat > "$fqgitdir/gitweb/gitweb_config.perl" <<EOF
 722 #!@@PERL@@
 723 our \$projectroot = "$(dirname "$fqgitdir")";
 724 our \$git_temp = "$fqgitdir/gitweb/tmp";
 725 our \$projects_list = \$projectroot;
 726
 727 \$feature{'remote_heads'}{'default'} = [1];
 728 EOF
 729 }
 730
 731 configure_httpd() {
 732         case "$httpd" in
 733         *lighttpd*)
 734                 lighttpd_conf
 735                 ;;
 736         *apache2*|*httpd*)
 737                 apache2_conf
 738                 ;;
 739         webrick)
 740                 webrick_conf
 741                 ;;
 742         *mongoose*)
 743                 mongoose_conf
 744                 ;;
 745         *plackup*)
 746                 plackup_conf
 747                 ;;
 748         *python*)
 749                 python_conf
 750                 ;;
 751         *)
 752                 echo "Unknown httpd specified: $httpd"
 753                 exit 1
 754                 ;;
 755         esac
 756 }
 757
 758 case "$action" in
 759 stop)
 760         stop_httpd
 761         exit 0
 762         ;;
 763 start)
 764         start_httpd
 765         exit 0
 766         ;;
 767 restart)
 768         stop_httpd
 769         start_httpd
 770         exit 0
 771         ;;
 772 esac
 773
 774 gitweb_conf
 775
 776 resolve_full_httpd
 777 mkdir -p "$fqgitdir/gitweb/$httpd_only"
 778 conf="$fqgitdir/gitweb/$httpd_only.conf"
 779
 780 configure_httpd
 781
 782 start_httpd
 783 url=http://127.0.0.1:$port
 784
 785 if test -n "$browser"; then
 786         httpd_is_ready && git web--browse -b "$browser" $url || echo $url
 787 else
 788         httpd_is_ready && git web--browse -c "instaweb.browser" $url || echo $url
 789 fi