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git-commit-vandalism/git-instaweb.sh
Dan McGee 4bdf85995b git-instaweb: Don't assume Apache executable is named apache2 
On Arch Linux, the executable for the Apache HTTP server keeps
the 'httpd' name and is not named 'apache2'. The path to the
server modules also contains 'httpd' rather than 'apache2'.
Remove some of these assumptions and add the httpd name in where
it may be required. Finally, make some slight style adjustments
to the code we are touching to make it fit the style of the rest
of the script.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Acked-by: Eric Wong <normalperson@yhbt.net>
2010-07-23 11:16:05 -07:00

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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="${httpd%% *}" # cut on first space
return
;;
esac
httpd_only="$(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 () {
# generate a standalone server script in $fqgitdir/gitweb.
cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
require 'webrick'
require 'yaml'
options = YAML::load_file(ARGV[0])
options[:StartCallback] = proc do
File.open(options[:PidFile],"w") do |f|
f.puts Process.pid
end
end
options[:ServerType] = WEBrick::Daemon
server = WEBrick::HTTPServer.new(options)
['INT', 'TERM'].each do |signal|
trap(signal) {server.shutdown}
end
server.start
EOF
# generate a shell script to invoke the above ruby script,
# which assumes _ruby_ is in the user's $PATH. that's _one_
# portable way to run ruby, which could be installed anywhere,
# really.
cat >"$fqgitdir/gitweb/$httpd" <<EOF
#!/bin/sh
exec ruby "$fqgitdir/gitweb/$httpd.rb" \$*
EOF
chmod +x "$fqgitdir/gitweb/$httpd"
cat >"$conf" <<EOF
:Port: $port
:DocumentRoot: "$root"
:DirectoryIndex: ["gitweb.cgi"]
:PidFile: "$fqgitdir/pid"
EOF
test "$local" = true && echo ':BindAddress: "127.0.0.1"' >> "$conf"
}
lighttpd_conf () {
cat > "$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 (__FILE__ eq \$0) {
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;
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
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