git-instaweb.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Eric Wong
   4 #
   5
   6 OPTIONS_KEEPDASHDASH=
   7 OPTIONS_SPEC="\
   8 git-instaweb [options] (--start | --stop | --restart)
   9 --
  10 l,local        only bind on 127.0.0.1
  11 p,port=        the port to bind to
  12 d,httpd=       the command to launch
  13 b,browser=     the browser to launch
  14 m,module-path= the module path (only needed for apache2)
  15  Action
  16 stop           stop the web server
  17 start          start the web server
  18 restart        restart the web server
  19 "
  20
  21 . git-sh-setup
  22
  23 fqgitdir="$GIT_DIR"
  24 local="`git config --bool --get instaweb.local`"
  25 httpd="`git config --get instaweb.httpd`"
  26 browser="`git config --get instaweb.browser`"
  27 test -z "$browser" && browser="`git config --get web.browser`"
  28 port=`git config --get instaweb.port`
  29 module_path="`git config --get instaweb.modulepath`"
  30
  31 conf="$GIT_DIR/gitweb/httpd.conf"
  32
  33 # Defaults:
  34
  35 # if installed, it doesn't need further configuration (module_path)
  36 test -z "$httpd" && httpd='lighttpd -f'
  37
  38 # probably the most popular browser among gitweb users
  39 test -z "$browser" && browser='firefox'
  40
  41 # any untaken local port will do...
  42 test -z "$port" && port=1234
  43
  44 start_httpd () {
  45         httpd_only="`echo $httpd | cut -f1 -d' '`"
  46         if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null;; esac
  47         then
  48                 $httpd "$fqgitdir/gitweb/httpd.conf"
  49         else
  50                 # many httpds are installed in /usr/sbin or /usr/local/sbin
  51                 # these days and those are not in most users $PATHs
  52                 # in addition, we may have generated a server script
  53                 # in $fqgitdir/gitweb.
  54                 for i in /usr/local/sbin /usr/sbin "$fqgitdir/gitweb"
  55                 do
  56                         if test -x "$i/$httpd_only"
  57                         then
  58                                 # don't quote $httpd, there can be
  59                                 # arguments to it (-f)
  60                                 $i/$httpd "$fqgitdir/gitweb/httpd.conf"
  61                                 return
  62                         fi
  63                 done
  64                 echo "$httpd_only not found. Install $httpd_only or use" \
  65                      "--httpd to specify another http daemon."
  66                 exit 1
  67         fi
  68         if test $? != 0; then
  69                 echo "Could not execute http daemon $httpd."
  70                 exit 1
  71         fi
  72 }
  73
  74 stop_httpd () {
  75         test -f "$fqgitdir/pid" && kill `cat "$fqgitdir/pid"`
  76 }
  77
  78 while test $# != 0
  79 do
  80         case "$1" in
  81         --stop|stop)
  82                 stop_httpd
  83                 exit 0
  84                 ;;
  85         --start|start)
  86                 start_httpd
  87                 exit 0
  88                 ;;
  89         --restart|restart)
  90                 stop_httpd
  91                 start_httpd
  92                 exit 0
  93                 ;;
  94         -l|--local)
  95                 local=true
  96                 ;;
  97         -d|--httpd)
  98                 shift
  99                 httpd="$1"
 100                 ;;
 101         -b|--browser)
 102                 shift
 103                 browser="$1"
 104                 ;;
 105         -p|--port)
 106                 shift
 107                 port="$1"
 108                 ;;
 109         -m|--module-path)
 110                 shift
 111                 module_path="$1"
 112                 ;;
 113         --)
 114                 ;;
 115         *)
 116                 usage
 117                 ;;
 118         esac
 119         shift
 120 done
 121
 122 mkdir -p "$GIT_DIR/gitweb/tmp"
 123 GIT_EXEC_PATH="`git --exec-path`"
 124 GIT_DIR="$fqgitdir"
 125 export GIT_EXEC_PATH GIT_DIR
 126
 127
 128 webrick_conf () {
 129         # generate a standalone server script in $fqgitdir/gitweb.
 130         cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
 131 require 'webrick'
 132 require 'yaml'
 133 options = YAML::load_file(ARGV[0])
 134 options[:StartCallback] = proc do
 135   File.open(options[:PidFile],"w") do |f|
 136     f.puts Process.pid
 137   end
 138 end
 139 options[:ServerType] = WEBrick::Daemon
 140 server = WEBrick::HTTPServer.new(options)
 141 ['INT', 'TERM'].each do |signal|
 142   trap(signal) {server.shutdown}
 143 end
 144 server.start
 145 EOF
 146         # generate a shell script to invoke the above ruby script,
 147         # which assumes _ruby_ is in the user's $PATH. that's _one_
 148         # portable way to run ruby, which could be installed anywhere,
 149         # really.
 150         cat >"$fqgitdir/gitweb/$httpd" <<EOF
 151 #!/bin/sh
 152 exec ruby "$fqgitdir/gitweb/$httpd.rb" \$*
 153 EOF
 154         chmod +x "$fqgitdir/gitweb/$httpd"
 155
 156         cat >"$conf" <<EOF
 157 :Port: $port
 158 :DocumentRoot: "$fqgitdir/gitweb"
 159 :DirectoryIndex: ["gitweb.cgi"]
 160 :PidFile: "$fqgitdir/pid"
 161 EOF
 162         test "$local" = true && echo ':BindAddress: "127.0.0.1"' >> "$conf"
 163 }
 164
 165 lighttpd_conf () {
 166         cat > "$conf" <<EOF
 167 server.document-root = "$fqgitdir/gitweb"
 168 server.port = $port
 169 server.modules = ( "mod_cgi" )
 170 server.indexfiles = ( "gitweb.cgi" )
 171 server.pid-file = "$fqgitdir/pid"
 172 cgi.assign = ( ".cgi" => "" )
 173 mimetype.assign = ( ".css" => "text/css" )
 174 EOF
 175         test x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$conf"
 176 }
 177
 178 apache2_conf () {
 179         test -z "$module_path" && module_path=/usr/lib/apache2/modules
 180         mkdir -p "$GIT_DIR/gitweb/logs"
 181         bind=
 182         test x"$local" = xtrue && bind='127.0.0.1:'
 183         echo 'text/css css' > $fqgitdir/mime.types
 184         cat > "$conf" <<EOF
 185 ServerName "git-instaweb"
 186 ServerRoot "$fqgitdir/gitweb"
 187 DocumentRoot "$fqgitdir/gitweb"
 188 PidFile "$fqgitdir/pid"
 189 Listen $bind$port
 190 EOF
 191
 192         for mod in mime dir; do
 193                 if test -e $module_path/mod_${mod}.so; then
 194                         echo "LoadModule ${mod}_module " \
 195                              "$module_path/mod_${mod}.so" >> "$conf"
 196                 fi
 197         done
 198         cat >> "$conf" <<EOF
 199 TypesConfig $fqgitdir/mime.types
 200 DirectoryIndex gitweb.cgi
 201 EOF
 202
 203         # check to see if Dennis Stosberg's mod_perl compatibility patch
 204         # (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
 205         if test -f "$module_path/mod_perl.so" && grep '^our $gitbin' \
 206                                 "$GIT_DIR/gitweb/gitweb.cgi" >/dev/null
 207         then
 208                 # favor mod_perl if available
 209                 cat >> "$conf" <<EOF
 210 LoadModule perl_module $module_path/mod_perl.so
 211 PerlPassEnv GIT_DIR
 212 PerlPassEnv GIT_EXEC_DIR
 213 <Location /gitweb.cgi>
 214         SetHandler perl-script
 215         PerlResponseHandler ModPerl::Registry
 216         PerlOptions +ParseHeaders
 217         Options +ExecCGI
 218 </Location>
 219 EOF
 220         else
 221                 # plain-old CGI
 222                 list_mods=`echo "$httpd" | sed "s/-f$/-l/"`
 223                 $list_mods | grep 'mod_cgi\.c' >/dev/null 2>&1 || \
 224                 echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
 225                 cat >> "$conf" <<EOF
 226 AddHandler cgi-script .cgi
 227 <Location /gitweb.cgi>
 228         Options +ExecCGI
 229 </Location>
 230 EOF
 231         fi
 232 }
 233
 234 script='
 235 s#^\(my\|our\) $projectroot =.*#\1 $projectroot = "'$(dirname "$fqgitdir")'";#
 236 s#\(my\|our\) $gitbin =.*#\1 $gitbin = "'$GIT_EXEC_PATH'";#
 237 s#\(my\|our\) $projects_list =.*#\1 $projects_list = $projectroot;#
 238 s#\(my\|our\) $git_temp =.*#\1 $git_temp = "'$fqgitdir/gitweb/tmp'";#'
 239
 240 gitweb_cgi () {
 241         cat > "$1.tmp" <<\EOFGITWEB
 242 @@GITWEB_CGI@@
 243 EOFGITWEB
 244         sed "$script" "$1.tmp"  > "$1"
 245         chmod +x "$1"
 246         rm -f "$1.tmp"
 247 }
 248
 249 gitweb_css () {
 250         cat > "$1" <<\EOFGITWEB
 251 @@GITWEB_CSS@@
 252 EOFGITWEB
 253 }
 254
 255 gitweb_cgi "$GIT_DIR/gitweb/gitweb.cgi"
 256 gitweb_css "$GIT_DIR/gitweb/gitweb.css"
 257
 258 case "$httpd" in
 259 *lighttpd*)
 260         lighttpd_conf
 261         ;;
 262 *apache2*)
 263         apache2_conf
 264         ;;
 265 webrick)
 266         webrick_conf
 267         ;;
 268 *)
 269         echo "Unknown httpd specified: $httpd"
 270         exit 1
 271         ;;
 272 esac
 273
 274 start_httpd
 275 url=http://127.0.0.1:$port
 276 "$browser" $url || echo $url