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git/git-instaweb.sh

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#!/bin/sh
#
# Copyright (c) 2006 Eric Wong
#
PERL='@@PERL@@'
OPTIONS_KEEPDASHDASH=
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
"
. 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)"
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="${httpd%% *}" # cut on first space
return
;;
esac
httpd_only="$(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
# don't quote $full_httpd, there can be arguments to it (-f)
case "$httpd" in
*mongoose*|*plackup*)
#These servers don't have a daemon mode so we'll have to fork it
$full_httpd "$fqgitdir/gitweb/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
;;
*)
$full_httpd "$fqgitdir/gitweb/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)
stop_httpd
exit 0
;;
--start|start)
start_httpd
exit 0
;;
--restart|restart)
stop_httpd
start_httpd
exit 0
;;
-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
#!/bin/sh
# 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 () {
if test -z "$module_path"
then
test -d "/usr/lib/httpd/modules" &&
module_path="/usr/lib/httpd/modules"
test -d "/usr/lib/apache2/modules" &&
module_path="/usr/lib/apache2/modules"
fi
bind=
test x"$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 mime dir env log_config
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"
}
gitweb_conf() {
cat > "$fqgitdir/gitweb/gitweb_config.perl" <<EOF
#!/usr/bin/perl
our \$projectroot = "$(dirname "$fqgitdir")";
our \$git_temp = "$fqgitdir/gitweb/tmp";
our \$projects_list = \$projectroot;
\$feature{'remote_heads'}{'default'} = [1];
EOF
}
gitweb_conf
resolve_full_httpd
mkdir -p "$fqgitdir/gitweb/$httpd_only"
case "$httpd" in
*lighttpd*)
lighttpd_conf
;;
*apache2*|*httpd*)
apache2_conf
;;
webrick)
webrick_conf
;;
*mongoose*)
mongoose_conf
;;
*plackup*)
plackup_conf
;;
*)
echo "Unknown httpd specified: $httpd"
exit 1
;;
esac
start_httpd
url=http://127.0.0.1:$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