Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7

1 files changed, 789 insertions, 0 deletions

diff --git a/git-instaweb.sh b/git-instaweb.sh
new file mode 100755
index 000000000000..7c55229773e2
--- /dev/null
+++ b/git-instaweb.sh
@@ -0,0 +1,789 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Eric Wong
+#
+
+PERL='@@PERL@@'
+OPTIONS_KEEPDASHDASH=
+OPTIONS_STUCKLONG=
+OPTIONS_SPEC="\
+git instaweb [options] (--start | --stop | --restart)
+--
+l,local        only bind on 127.0.0.1
+p,port=        the port to bind to
+d,httpd=       the command to launch
+b,browser=     the browser to launch
+m,module-path= the module path (only needed for apache2)
+ Action
+stop           stop the web server
+start          start the web server
+restart        restart the web server
+"
+
+SUBDIRECTORY_OK=Yes
+. git-sh-setup
+
+fqgitdir="$GIT_DIR"
+local="$(git config --bool --get instaweb.local)"
+httpd="$(git config --get instaweb.httpd)"
+root="$(git config --get instaweb.gitwebdir)"
+port=$(git config --get instaweb.port)
+module_path="$(git config --get instaweb.modulepath)"
+action="browse"
+
+conf="$GIT_DIR/gitweb/httpd.conf"
+
+# Defaults:
+
+# if installed, it doesn't need further configuration (module_path)
+test -z "$httpd" && httpd='lighttpd -f'
+
+# Default is @@GITWEBDIR@@
+test -z "$root" && root='@@GITWEBDIR@@'
+
+# any untaken local port will do...
+test -z "$port" && port=1234
+
+resolve_full_httpd () {
+	case "$httpd" in
+	*apache2*|*lighttpd*|*httpd*)
+		# yes, *httpd* covers *lighttpd* above, but it is there for clarity
+		# ensure that the apache2/lighttpd command ends with "-f"
+		if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1
+		then
+			httpd="$httpd -f"
+		fi
+		;;
+	*plackup*)
+		# server is started by running via generated gitweb.psgi in $fqgitdir/gitweb
+		full_httpd="$fqgitdir/gitweb/gitweb.psgi"
+		httpd_only="${httpd%% *}" # cut on first space
+		return
+		;;
+	*webrick*)
+		# server is started by running via generated webrick.rb in
+		# $fqgitdir/gitweb
+		full_httpd="$fqgitdir/gitweb/webrick.rb"
+		httpd_only="${httpd%% *}" # cut on first space
+		return
+		;;
+	*python*)
+		# server is started by running via generated gitweb.py in
+		# $fqgitdir/gitweb
+		full_httpd="$fqgitdir/gitweb/gitweb.py"
+		httpd_only="${httpd%% *}" # cut on first space
+		return
+		;;
+	esac
+
+	httpd_only="$(echo $httpd | cut -f1 -d' ')"
+	if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null 2>&1;; esac
+	then
+		full_httpd=$httpd
+	else
+		# many httpds are installed in /usr/sbin or /usr/local/sbin
+		# these days and those are not in most users $PATHs
+		# in addition, we may have generated a server script
+		# in $fqgitdir/gitweb.
+		for i in /usr/local/sbin /usr/sbin "$root" "$fqgitdir/gitweb"
+		do
+			if test -x "$i/$httpd_only"
+			then
+				full_httpd=$i/$httpd
+				return
+			fi
+		done
+
+		echo >&2 "$httpd_only not found. Install $httpd_only or use" \
+		     "--httpd to specify another httpd daemon."
+		exit 1
+	fi
+}
+
+start_httpd () {
+	if test -f "$fqgitdir/pid"; then
+		say "Instance already running. Restarting..."
+		stop_httpd
+	fi
+
+	# here $httpd should have a meaningful value
+	resolve_full_httpd
+	mkdir -p "$fqgitdir/gitweb/$httpd_only"
+	conf="$fqgitdir/gitweb/$httpd_only.conf"
+
+	# generate correct config file if it doesn't exist
+	test -f "$conf" || configure_httpd
+	test -f "$fqgitdir/gitweb/gitweb_config.perl" || gitweb_conf
+
+	# don't quote $full_httpd, there can be arguments to it (-f)
+	case "$httpd" in
+	*mongoose*|*plackup*|*python*)
+		#These servers don't have a daemon mode so we'll have to fork it
+		$full_httpd "$conf" &
+		#Save the pid before doing anything else (we'll print it later)
+		pid=$!
+
+		if test $? != 0; then
+			echo "Could not execute http daemon $httpd."
+			exit 1
+		fi
+
+		cat > "$fqgitdir/pid" <<EOF
+$pid
+EOF
+		;;
+	*)
+		$full_httpd "$conf"
+		if test $? != 0; then
+			echo "Could not execute http daemon $httpd."
+			exit 1
+		fi
+		;;
+	esac
+}
+
+stop_httpd () {
+	test -f "$fqgitdir/pid" && kill $(cat "$fqgitdir/pid")
+	rm -f "$fqgitdir/pid"
+}
+
+httpd_is_ready () {
+	"$PERL" -MIO::Socket::INET -e "
+local \$| = 1; # turn on autoflush
+exit if (IO::Socket::INET->new('127.0.0.1:$port'));
+print 'Waiting for \'$httpd\' to start ..';
+do {
+	print '.';
+	sleep(1);
+} until (IO::Socket::INET->new('127.0.0.1:$port'));
+print qq! (done)\n!;
+"
+}
+
+while test $# != 0
+do
+	case "$1" in
+	--stop|stop)
+		action="stop"
+		;;
+	--start|start)
+		action="start"
+		;;
+	--restart|restart)
+		action="restart"
+		;;
+	-l|--local)
+		local=true
+		;;
+	-d|--httpd)
+		shift
+		httpd="$1"
+		;;
+	-b|--browser)
+		shift
+		browser="$1"
+		;;
+	-p|--port)
+		shift
+		port="$1"
+		;;
+	-m|--module-path)
+		shift
+		module_path="$1"
+		;;
+	--)
+		;;
+	*)
+		usage
+		;;
+	esac
+	shift
+done
+
+mkdir -p "$GIT_DIR/gitweb/tmp"
+GIT_EXEC_PATH="$(git --exec-path)"
+GIT_DIR="$fqgitdir"
+GITWEB_CONFIG="$fqgitdir/gitweb/gitweb_config.perl"
+export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
+
+webrick_conf () {
+	# webrick seems to have no way of passing arbitrary environment
+	# variables to the underlying CGI executable, so we wrap the
+	# actual gitweb.cgi using a shell script to force it
+  wrapper="$fqgitdir/gitweb/$httpd/wrapper.sh"
+	cat > "$wrapper" <<EOF
+#!@SHELL_PATH@
+# we use this shell script wrapper around the real gitweb.cgi since
+# there appears to be no other way to pass arbitrary environment variables
+# into the CGI process
+GIT_EXEC_PATH=$GIT_EXEC_PATH GIT_DIR=$GIT_DIR GITWEB_CONFIG=$GITWEB_CONFIG
+export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
+exec $root/gitweb.cgi
+EOF
+	chmod +x "$wrapper"
+
+	# This assumes _ruby_ is in the user's $PATH. that's _one_
+	# portable way to run ruby, which could be installed anywhere, really.
+	# generate a standalone server script in $fqgitdir/gitweb.
+	cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
+#!/usr/bin/env ruby
+require 'webrick'
+require 'logger'
+options = {
+  :Port => $port,
+  :DocumentRoot => "$root",
+  :Logger => Logger.new('$fqgitdir/gitweb/error.log'),
+  :AccessLog => [
+    [ Logger.new('$fqgitdir/gitweb/access.log'),
+      WEBrick::AccessLog::COMBINED_LOG_FORMAT ]
+  ],
+  :DirectoryIndex => ["gitweb.cgi"],
+  :CGIInterpreter => "$wrapper",
+  :StartCallback => lambda do
+    File.open("$fqgitdir/pid", "w") { |f| f.puts Process.pid }
+  end,
+  :ServerType => WEBrick::Daemon,
+}
+options[:BindAddress] = '127.0.0.1' if "$local" == "true"
+server = WEBrick::HTTPServer.new(options)
+['INT', 'TERM'].each do |signal|
+  trap(signal) {server.shutdown}
+end
+server.start
+EOF
+	chmod +x "$fqgitdir/gitweb/$httpd.rb"
+	# configuration is embedded in server script file, webrick.rb
+	rm -f "$conf"
+}
+
+lighttpd_conf () {
+	cat > "$conf" <<EOF
+server.document-root = "$root"
+server.port = $port
+server.modules = ( "mod_setenv", "mod_cgi" )
+server.indexfiles = ( "gitweb.cgi" )
+server.pid-file = "$fqgitdir/pid"
+server.errorlog = "$fqgitdir/gitweb/$httpd_only/error.log"
+
+# to enable, add "mod_access", "mod_accesslog" to server.modules
+# variable above and uncomment this
+#accesslog.filename = "$fqgitdir/gitweb/$httpd_only/access.log"
+
+setenv.add-environment = ( "PATH" => env.PATH, "GITWEB_CONFIG" => env.GITWEB_CONFIG )
+
+cgi.assign = ( ".cgi" => "" )
+
+# mimetype mapping
+mimetype.assign             = (
+  ".pdf"          =>      "application/pdf",
+  ".sig"          =>      "application/pgp-signature",
+  ".spl"          =>      "application/futuresplash",
+  ".class"        =>      "application/octet-stream",
+  ".ps"           =>      "application/postscript",
+  ".torrent"      =>      "application/x-bittorrent",
+  ".dvi"          =>      "application/x-dvi",
+  ".gz"           =>      "application/x-gzip",
+  ".pac"          =>      "application/x-ns-proxy-autoconfig",
+  ".swf"          =>      "application/x-shockwave-flash",
+  ".tar.gz"       =>      "application/x-tgz",
+  ".tgz"          =>      "application/x-tgz",
+  ".tar"          =>      "application/x-tar",
+  ".zip"          =>      "application/zip",
+  ".mp3"          =>      "audio/mpeg",
+  ".m3u"          =>      "audio/x-mpegurl",
+  ".wma"          =>      "audio/x-ms-wma",
+  ".wax"          =>      "audio/x-ms-wax",
+  ".ogg"          =>      "application/ogg",
+  ".wav"          =>      "audio/x-wav",
+  ".gif"          =>      "image/gif",
+  ".jpg"          =>      "image/jpeg",
+  ".jpeg"         =>      "image/jpeg",
+  ".png"          =>      "image/png",
+  ".xbm"          =>      "image/x-xbitmap",
+  ".xpm"          =>      "image/x-xpixmap",
+  ".xwd"          =>      "image/x-xwindowdump",
+  ".css"          =>      "text/css",
+  ".html"         =>      "text/html",
+  ".htm"          =>      "text/html",
+  ".js"           =>      "text/javascript",
+  ".asc"          =>      "text/plain",
+  ".c"            =>      "text/plain",
+  ".cpp"          =>      "text/plain",
+  ".log"          =>      "text/plain",
+  ".conf"         =>      "text/plain",
+  ".text"         =>      "text/plain",
+  ".txt"          =>      "text/plain",
+  ".dtd"          =>      "text/xml",
+  ".xml"          =>      "text/xml",
+  ".mpeg"         =>      "video/mpeg",
+  ".mpg"          =>      "video/mpeg",
+  ".mov"          =>      "video/quicktime",
+  ".qt"           =>      "video/quicktime",
+  ".avi"          =>      "video/x-msvideo",
+  ".asf"          =>      "video/x-ms-asf",
+  ".asx"          =>      "video/x-ms-asf",
+  ".wmv"          =>      "video/x-ms-wmv",
+  ".bz2"          =>      "application/x-bzip",
+  ".tbz"          =>      "application/x-bzip-compressed-tar",
+  ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
+  ""              =>      "text/plain"
+ )
+EOF
+	test x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$conf"
+}
+
+apache2_conf () {
+	for candidate in \
+		/etc/httpd \
+		/usr/lib/apache2 \
+		/usr/lib/httpd ;
+	do
+		if test -d "$candidate/modules"
+		then
+			module_path="$candidate/modules"
+			break
+		fi
+	done
+	bind=
+	test x"$local" = xtrue && bind='127.0.0.1:'
+	echo 'text/css css' > "$fqgitdir/mime.types"
+	cat > "$conf" <<EOF
+ServerName "git-instaweb"
+ServerRoot "$root"
+DocumentRoot "$root"
+ErrorLog "$fqgitdir/gitweb/$httpd_only/error.log"
+CustomLog "$fqgitdir/gitweb/$httpd_only/access.log" combined
+PidFile "$fqgitdir/pid"
+Listen $bind$port
+EOF
+
+	for mod in mpm_event mpm_prefork mpm_worker
+	do
+		if test -e $module_path/mod_${mod}.so
+		then
+			echo "LoadModule ${mod}_module " \
+			     "$module_path/mod_${mod}.so" >> "$conf"
+			# only one mpm module permitted
+			break
+		fi
+	done
+	for mod in mime dir env log_config authz_core unixd
+	do
+		if test -e $module_path/mod_${mod}.so
+		then
+			echo "LoadModule ${mod}_module " \
+			     "$module_path/mod_${mod}.so" >> "$conf"
+		fi
+	done
+	cat >> "$conf" <<EOF
+TypesConfig "$fqgitdir/mime.types"
+DirectoryIndex gitweb.cgi
+EOF
+
+	# check to see if Dennis Stosberg's mod_perl compatibility patch
+	# (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
+	if test -f "$module_path/mod_perl.so" &&
+	   sane_grep 'MOD_PERL' "$root/gitweb.cgi" >/dev/null
+	then
+		# favor mod_perl if available
+		cat >> "$conf" <<EOF
+LoadModule perl_module $module_path/mod_perl.so
+PerlPassEnv GIT_DIR
+PerlPassEnv GIT_EXEC_PATH
+PerlPassEnv GITWEB_CONFIG
+<Location /gitweb.cgi>
+	SetHandler perl-script
+	PerlResponseHandler ModPerl::Registry
+	PerlOptions +ParseHeaders
+	Options +ExecCGI
+</Location>
+EOF
+	else
+		# plain-old CGI
+		resolve_full_httpd
+		list_mods=$(echo "$full_httpd" | sed 's/-f$/-l/')
+		$list_mods | sane_grep 'mod_cgi\.c' >/dev/null 2>&1 || \
+		if test -f "$module_path/mod_cgi.so"
+		then
+			echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
+		else
+			$list_mods | grep 'mod_cgid\.c' >/dev/null 2>&1 || \
+			if test -f "$module_path/mod_cgid.so"
+			then
+				echo "LoadModule cgid_module $module_path/mod_cgid.so" \
+					>> "$conf"
+			else
+				echo "You have no CGI support!"
+				exit 2
+			fi
+			echo "ScriptSock logs/gitweb.sock" >> "$conf"
+		fi
+		cat >> "$conf" <<EOF
+PassEnv GIT_DIR
+PassEnv GIT_EXEC_PATH
+PassEnv GITWEB_CONFIG
+AddHandler cgi-script .cgi
+<Location /gitweb.cgi>
+	Options +ExecCGI
+</Location>
+EOF
+	fi
+}
+
+mongoose_conf() {
+	cat > "$conf" <<EOF
+# Mongoose web server configuration file.
+# Lines starting with '#' and empty lines are ignored.
+# For detailed description of every option, visit
+# http://code.google.com/p/mongoose/wiki/MongooseManual
+
+root		$root
+ports		$port
+index_files	gitweb.cgi
+#ssl_cert	$fqgitdir/gitweb/ssl_cert.pem
+error_log	$fqgitdir/gitweb/$httpd_only/error.log
+access_log	$fqgitdir/gitweb/$httpd_only/access.log
+
+#cgi setup
+cgi_env		PATH=$PATH,GIT_DIR=$GIT_DIR,GIT_EXEC_PATH=$GIT_EXEC_PATH,GITWEB_CONFIG=$GITWEB_CONFIG
+cgi_interp	$PERL
+cgi_ext		cgi,pl
+
+# mimetype mapping
+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
+EOF
+}
+
+plackup_conf () {
+	# generate a standalone 'plackup' server script in $fqgitdir/gitweb
+	# with embedded configuration; it does not use "$conf" file
+	cat > "$fqgitdir/gitweb/gitweb.psgi" <<EOF
+#!$PERL
+
+# gitweb - simple web interface to track changes in git repositories
+#          PSGI wrapper and server starter (see http://plackperl.org)
+
+use strict;
+
+use IO::Handle;
+use Plack::MIME;
+use Plack::Builder;
+use Plack::App::WrapCGI;
+use CGI::Emulate::PSGI 0.07; # minimum version required to work with gitweb
+
+# mimetype mapping (from lighttpd_conf)
+Plack::MIME->add_type(
+	".pdf"          =>      "application/pdf",
+	".sig"          =>      "application/pgp-signature",
+	".spl"          =>      "application/futuresplash",
+	".class"        =>      "application/octet-stream",
+	".ps"           =>      "application/postscript",
+	".torrent"      =>      "application/x-bittorrent",
+	".dvi"          =>      "application/x-dvi",
+	".gz"           =>      "application/x-gzip",
+	".pac"          =>      "application/x-ns-proxy-autoconfig",
+	".swf"          =>      "application/x-shockwave-flash",
+	".tar.gz"       =>      "application/x-tgz",
+	".tgz"          =>      "application/x-tgz",
+	".tar"          =>      "application/x-tar",
+	".zip"          =>      "application/zip",
+	".mp3"          =>      "audio/mpeg",
+	".m3u"          =>      "audio/x-mpegurl",
+	".wma"          =>      "audio/x-ms-wma",
+	".wax"          =>      "audio/x-ms-wax",
+	".ogg"          =>      "application/ogg",
+	".wav"          =>      "audio/x-wav",
+	".gif"          =>      "image/gif",
+	".jpg"          =>      "image/jpeg",
+	".jpeg"         =>      "image/jpeg",
+	".png"          =>      "image/png",
+	".xbm"          =>      "image/x-xbitmap",
+	".xpm"          =>      "image/x-xpixmap",
+	".xwd"          =>      "image/x-xwindowdump",
+	".css"          =>      "text/css",
+	".html"         =>      "text/html",
+	".htm"          =>      "text/html",
+	".js"           =>      "text/javascript",
+	".asc"          =>      "text/plain",
+	".c"            =>      "text/plain",
+	".cpp"          =>      "text/plain",
+	".log"          =>      "text/plain",
+	".conf"         =>      "text/plain",
+	".text"         =>      "text/plain",
+	".txt"          =>      "text/plain",
+	".dtd"          =>      "text/xml",
+	".xml"          =>      "text/xml",
+	".mpeg"         =>      "video/mpeg",
+	".mpg"          =>      "video/mpeg",
+	".mov"          =>      "video/quicktime",
+	".qt"           =>      "video/quicktime",
+	".avi"          =>      "video/x-msvideo",
+	".asf"          =>      "video/x-ms-asf",
+	".asx"          =>      "video/x-ms-asf",
+	".wmv"          =>      "video/x-ms-wmv",
+	".bz2"          =>      "application/x-bzip",
+	".tbz"          =>      "application/x-bzip-compressed-tar",
+	".tar.bz2"      =>      "application/x-bzip-compressed-tar",
+	""              =>      "text/plain"
+);
+
+my \$app = builder {
+	# to be able to override \$SIG{__WARN__} to log build time warnings
+	use CGI::Carp; # it sets \$SIG{__WARN__} itself
+
+	my \$logdir = "$fqgitdir/gitweb/$httpd_only";
+	open my \$access_log_fh, '>>', "\$logdir/access.log"
+		or die "Couldn't open access log '\$logdir/access.log': \$!";
+	open my \$error_log_fh,  '>>', "\$logdir/error.log"
+		or die "Couldn't open error log '\$logdir/error.log': \$!";
+
+	\$access_log_fh->autoflush(1);
+	\$error_log_fh->autoflush(1);
+
+	# redirect build time warnings to error.log
+	\$SIG{'__WARN__'} = sub {
+		my \$msg = shift;
+		# timestamp warning like in CGI::Carp::warn
+		my \$stamp = CGI::Carp::stamp();
+		\$msg =~ s/^/\$stamp/gm;
+		print \$error_log_fh \$msg;
+	};
+
+	# write errors to error.log, access to access.log
+	enable 'AccessLog',
+		format => "combined",
+		logger => sub { print \$access_log_fh @_; };
+	enable sub {
+		my \$app = shift;
+		sub {
+			my \$env = shift;
+			\$env->{'psgi.errors'} = \$error_log_fh;
+			\$app->(\$env);
+		}
+	};
+	# gitweb currently doesn't work with $SIG{CHLD} set to 'IGNORE',
+	# because it uses 'close $fd or die...' on piped filehandle $fh
+	# (which causes the parent process to wait for child to finish).
+	enable_if { \$SIG{'CHLD'} eq 'IGNORE' } sub {
+		my \$app = shift;
+		sub {
+			my \$env = shift;
+			local \$SIG{'CHLD'} = 'DEFAULT';
+			local \$SIG{'CLD'}  = 'DEFAULT';
+			\$app->(\$env);
+		}
+	};
+	# serve static files, i.e. stylesheet, images, script
+	enable 'Static',
+		path => sub { m!\.(js|css|png)\$! && s!^/gitweb/!! },
+		root => "$root/",
+		encoding => 'utf-8'; # encoding for 'text/plain' files
+	# convert CGI application to PSGI app
+	Plack::App::WrapCGI->new(script => "$root/gitweb.cgi")->to_app;
+};
+
+# make it runnable as standalone app,
+# like it would be run via 'plackup' utility
+if (caller) {
+	return \$app;
+} else {
+	require Plack::Runner;
+
+	my \$runner = Plack::Runner->new();
+	\$runner->parse_options(qw(--env deployment --port $port),
+				"$local" ? qw(--host 127.0.0.1) : ());
+	\$runner->run(\$app);
+}
+__END__
+EOF
+
+	chmod a+x "$fqgitdir/gitweb/gitweb.psgi"
+	# configuration is embedded in server script file, gitweb.psgi
+	rm -f "$conf"
+}
+
+python_conf() {
+	# Python's builtin http.server and its CGI support is very limited.
+	# CGI handler is capable of running CGI script only from inside a directory.
+	# Trying to set cgi_directories=["/"] will add double slash to SCRIPT_NAME
+	# and that in turn breaks gitweb's relative link generation.
+
+	# create a simple web root where $fqgitdir/gitweb/$httpd_only is our root
+	mkdir -p "$fqgitdir/gitweb/$httpd_only/cgi-bin"
+	# Python http.server follows the symlinks
+	ln -sf "$root/gitweb.cgi" "$fqgitdir/gitweb/$httpd_only/cgi-bin/gitweb.cgi"
+	ln -sf "$root/static" "$fqgitdir/gitweb/$httpd_only/"
+
+	# generate a standalone 'python http.server' script in $fqgitdir/gitweb
+	# This asumes that python is in user's $PATH
+	# This script is Python 2 and 3 compatible
+	cat > "$fqgitdir/gitweb/gitweb.py" <<EOF
+#!/usr/bin/env python
+import os
+import sys
+
+# Open log file in line buffering mode
+accesslogfile = open("$fqgitdir/gitweb/access.log", 'a', buffering=1)
+errorlogfile = open("$fqgitdir/gitweb/error.log", 'a', buffering=1)
+
+# and replace our stdout and stderr with log files
+# also do a lowlevel duplicate of the logfile file descriptors so that
+# our CGI child process writes any stderr warning also to the log file
+_orig_stdout_fd = sys.stdout.fileno()
+sys.stdout.close()
+os.dup2(accesslogfile.fileno(), _orig_stdout_fd)
+sys.stdout = accesslogfile
+
+_orig_stderr_fd = sys.stderr.fileno()
+sys.stderr.close()
+os.dup2(errorlogfile.fileno(), _orig_stderr_fd)
+sys.stderr = errorlogfile
+
+from functools import partial
+
+if sys.version_info < (3, 0):  # Python 2
+	from CGIHTTPServer import CGIHTTPRequestHandler
+	from BaseHTTPServer import HTTPServer as ServerClass
+else:  # Python 3
+	from http.server import CGIHTTPRequestHandler
+	from http.server import HTTPServer as ServerClass
+
+
+# Those environment variables will be passed to the cgi script
+os.environ.update({
+	"GIT_EXEC_PATH": "$GIT_EXEC_PATH",
+	"GIT_DIR": "$GIT_DIR",
+	"GITWEB_CONFIG": "$GITWEB_CONFIG"
+})
+
+
+class GitWebRequestHandler(CGIHTTPRequestHandler):
+
+	def log_message(self, format, *args):
+		# Write access logs to stdout
+		sys.stdout.write("%s - - [%s] %s\n" %
+				(self.address_string(),
+				self.log_date_time_string(),
+				format%args))
+
+	def do_HEAD(self):
+		self.redirect_path()
+		CGIHTTPRequestHandler.do_HEAD(self)
+
+	def do_GET(self):
+		if self.path == "/":
+			self.send_response(303, "See Other")
+			self.send_header("Location", "/cgi-bin/gitweb.cgi")
+			self.end_headers()
+			return
+		self.redirect_path()
+		CGIHTTPRequestHandler.do_GET(self)
+
+	def do_POST(self):
+		self.redirect_path()
+		CGIHTTPRequestHandler.do_POST(self)
+
+	# rewrite path of every request that is not gitweb.cgi to out of cgi-bin
+	def redirect_path(self):
+		if not self.path.startswith("/cgi-bin/gitweb.cgi"):
+			self.path = self.path.replace("/cgi-bin/", "/")
+
+	# gitweb.cgi is the only thing that is ever going to be run here.
+	# Ignore everything else
+	def is_cgi(self):
+		result = False
+		if self.path.startswith('/cgi-bin/gitweb.cgi'):
+			result = CGIHTTPRequestHandler.is_cgi(self)
+		return result
+
+
+bind = "127.0.0.1"
+if "$local" == "true":
+	bind = "0.0.0.0"
+
+# Set our http root directory
+# This is a work around for a missing directory argument in older Python versions
+# as this was added to SimpleHTTPRequestHandler in Python 3.7
+os.chdir("$fqgitdir/gitweb/$httpd_only/")
+
+GitWebRequestHandler.protocol_version = "HTTP/1.0"
+httpd = ServerClass((bind, $port), GitWebRequestHandler)
+
+sa = httpd.socket.getsockname()
+print("Serving HTTP on", sa[0], "port", sa[1], "...")
+httpd.serve_forever()
+EOF
+
+	chmod a+x "$fqgitdir/gitweb/gitweb.py"
+}
+
+gitweb_conf() {
+	cat > "$fqgitdir/gitweb/gitweb_config.perl" <<EOF
+#!@@PERL@@
+our \$projectroot = "$(dirname "$fqgitdir")";
+our \$git_temp = "$fqgitdir/gitweb/tmp";
+our \$projects_list = \$projectroot;
+
+\$feature{'remote_heads'}{'default'} = [1];
+EOF
+}
+
+configure_httpd() {
+	case "$httpd" in
+	*lighttpd*)
+		lighttpd_conf
+		;;
+	*apache2*|*httpd*)
+		apache2_conf
+		;;
+	webrick)
+		webrick_conf
+		;;
+	*mongoose*)
+		mongoose_conf
+		;;
+	*plackup*)
+		plackup_conf
+		;;
+	*python*)
+		python_conf
+		;;
+	*)
+		echo "Unknown httpd specified: $httpd"
+		exit 1
+		;;
+	esac
+}
+
+case "$action" in
+stop)
+	stop_httpd
+	exit 0
+	;;
+start)
+	start_httpd
+	exit 0
+	;;
+restart)
+	stop_httpd
+	start_httpd
+	exit 0
+	;;
+esac
+
+gitweb_conf
+
+resolve_full_httpd
+mkdir -p "$fqgitdir/gitweb/$httpd_only"
+conf="$fqgitdir/gitweb/$httpd_only.conf"
+
+configure_httpd
+
+start_httpd
+url=http://127.0.0.1:$port
+
+if test -n "$browser"; then
+	httpd_is_ready && git web--browse -b "$browser" $url || echo $url
+else
+	httpd_is_ready && git web--browse -c "instaweb.browser" $url || echo $url
+fi