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git/git-instaweb.sh
Chris Webb 39407304f1 git-instaweb: pass through invoking user's path to gitweb CGI scripts
When used with lighttpd or mongoose, git-instaweb previously passed a
hard-coded, default value of PATH to the gitweb CGI script. Use the invoking
user's value for PATH for this instead. (This is already implicitly the
behaviour for other web servers supported by git-instaweb.)

Signed-off-by: Chris Webb <chris@arachsys.com>
Acked-by: Eric Wong <normalperson@yhbt.net>
2010-04-17 12:40:20 -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="$(git config --get instaweb.httpd)"
port=$(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 "$httpd" && httpd='lighttpd -f'
# any untaken local port will do...
test -z "$port" && port=1234
resolve_full_httpd () {
case "$httpd" in
*apache2*|*lighttpd*)
# ensure that the apache2/lighttpd command ends with "-f"
if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1
then
httpd="$httpd -f"
fi
;;
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 $fqgitdir/gitweb.
for i in /usr/local/sbin /usr/sbin "$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*)
#The mongoose server doesn'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")
}
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"
export GIT_EXEC_PATH GIT_DIR
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: $port
:DocumentRoot: "$fqgitdir/gitweb"
: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 = "$fqgitdir/gitweb"
server.port = $port
server.modules = ( "mod_setenv", "mod_cgi" )
server.indexfiles = ( "gitweb.cgi" )
server.pid-file = "$fqgitdir/pid"
server.errorlog = "$fqgitdir/gitweb/error.log"
# to enable, add "mod_access", "mod_accesslog" to server.modules
# variable above and uncomment this
#accesslog.filename = "$fqgitdir/gitweb/access.log"
setenv.add-environment = ( "PATH" => env.PATH )
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 () {
test -z "$module_path" && module_path=/usr/lib/apache2/modules
mkdir -p "$GIT_DIR/gitweb/logs"
bind=
test x"$local" = xtrue && bind='127.0.0.1:'
echo 'text/css css' > "$fqgitdir/mime.types"
cat > "$conf" <<EOF
ServerName "git-instaweb"
ServerRoot "$fqgitdir/gitweb"
DocumentRoot "$fqgitdir/gitweb"
PidFile "$fqgitdir/pid"
Listen $bind$port
EOF
for mod in mime dir; 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 "$module_path/mod_perl.so" &&
sane_grep 'MOD_PERL' "$GIT_DIR/gitweb/gitweb.cgi" >/dev/null
then
# favor mod_perl if available
cat >> "$conf" <<EOF
LoadModule perl_module $module_path/mod_perl.so
PerlPassEnv GIT_DIR
PerlPassEnv GIT_EXEC_DIR
<Location /gitweb.cgi>
SetHandler perl-script
PerlResponseHandler ModPerl::Registry
PerlOptions +ParseHeaders
Options +ExecCGI
</Location>
EOF
else
# plain-old CGI
resolve_full_httpd
list_mods=$(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
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 $fqgitdir/gitweb
ports $port
index_files gitweb.cgi
#ssl_cert $fqgitdir/gitweb/ssl_cert.pem
error_log $fqgitdir/gitweb/error.log
access_log $fqgitdir/gitweb/access.log
#cgi setup
cgi_env PATH=$PATH,GIT_DIR=$GIT_DIR,GIT_EXEC_PATH=$GIT_EXEC_PATH
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
}
script='
s#^(my|our) \$projectroot =.*#$1 \$projectroot = "'$(dirname "$fqgitdir")'";#;
s#(my|our) \$gitbin =.*#$1 \$gitbin = "'$GIT_EXEC_PATH'";#;
s#(my|our) \$projects_list =.*#$1 \$projects_list = \$projectroot;#;
s#(my|our) \$git_temp =.*#$1 \$git_temp = "'$fqgitdir/gitweb/tmp'";#;'
gitweb_cgi () {
cat > "$1.tmp" <<\EOFGITWEB
@@GITWEB_CGI@@
EOFGITWEB
# Use the configured full path to perl to match the generated
# scripts' 'hashpling' line
"$PERL" -p -e "$script" "$1.tmp" > "$1"
chmod +x "$1"
rm -f "$1.tmp"
}
gitweb_css () {
cat > "$1" <<\EOFGITWEB
@@GITWEB_CSS@@
EOFGITWEB
}
gitweb_js () {
cat > "$1" <<\EOFGITWEB
@@GITWEB_JS@@
EOFGITWEB
}
gitweb_cgi "$GIT_DIR/gitweb/gitweb.cgi"
gitweb_css "$GIT_DIR/@@GITWEB_CSS_NAME@@"
gitweb_js "$GIT_DIR/@@GITWEB_JS_NAME@@"
case "$httpd" in
*lighttpd*)
lighttpd_conf
;;
*apache2*)
apache2_conf
;;
webrick)
webrick_conf
;;
*mongoose*)
mongoose_conf
;;
*)
echo "Unknown httpd specified: $httpd"
exit 1
;;
esac
start_httpd
url=http://127.0.0.1:$port
if test -n "$browser"; then
git web--browse -b "$browser" $url || echo $url
else
git web--browse -c "instaweb.browser" $url || echo $url
fi