git-instaweb.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Eric Wong
   4 #
   5 USAGE='[--start] [--stop] [--restart]
   6   [--local] [--httpd=<httpd>] [--port=<port>] [--browser=<browser>]
   7   [--module-path=<path> (for Apache2 only)]'
   8
   9 . git-sh-setup
  10
  11 fqgitdir="$GIT_DIR"
  12 local="`git config --bool --get instaweb.local`"
  13 httpd="`git config --get instaweb.httpd`"
  14 browser="`git config --get instaweb.browser`"
  15 port=`git config --get instaweb.port`
  16 module_path="`git config --get instaweb.modulepath`"
  17
  18 conf=$GIT_DIR/gitweb/httpd.conf
  19
  20 # Defaults:
  21
  22 # if installed, it doesn't need further configuration (module_path)
  23 test -z "$httpd" && httpd='lighttpd -f'
  24
  25 # probably the most popular browser among gitweb users
  26 test -z "$browser" && browser='firefox'
  27
  28 # any untaken local port will do...
  29 test -z "$port" && port=1234
  30
  31 start_httpd () {
  32         httpd_only="`echo $httpd | cut -f1 -d' '`"
  33         if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null;; esac
  34         then
  35                 $httpd $fqgitdir/gitweb/httpd.conf
  36         else
  37                 # many httpds are installed in /usr/sbin or /usr/local/sbin
  38                 # these days and those are not in most users $PATHs
  39                 # in addition, we may have generated a server script
  40                 # in $fqgitdir/gitweb.
  41                 for i in /usr/local/sbin /usr/sbin "$fqgitdir/gitweb"
  42                 do
  43                         if test -x "$i/$httpd_only"
  44                         then
  45                                 # don't quote $httpd, there can be
  46                                 # arguments to it (-f)
  47                                 $i/$httpd "$fqgitdir/gitweb/httpd.conf"
  48                                 return
  49                         fi
  50                 done
  51                 echo "$httpd_only not found. Install $httpd_only or use" \
  52                      "--httpd to specify another http daemon."
  53                 exit 1
  54         fi
  55         if test $? != 0; then
  56                 echo "Could not execute http daemon $httpd."
  57                 exit 1
  58         fi
  59 }
  60
  61 stop_httpd () {
  62         test -f "$fqgitdir/pid" && kill `cat "$fqgitdir/pid"`
  63 }
  64
  65 while test $# != 0
  66 do
  67         case "$1" in
  68         --stop|stop)
  69                 stop_httpd
  70                 exit 0
  71                 ;;
  72         --start|start)
  73                 start_httpd
  74                 exit 0
  75                 ;;
  76         --restart|restart)
  77                 stop_httpd
  78                 start_httpd
  79                 exit 0
  80                 ;;
  81         --local|-l)
  82                 local=true
  83                 ;;
  84         -d|--httpd|--httpd=*)
  85                 case "$#,$1" in
  86                 *,*=*)
  87                         httpd=`expr "$1" : '-[^=]*=\(.*\)'` ;;
  88                 1,*)
  89                         usage ;;
  90                 *)
  91                         httpd="$2"
  92                         shift ;;
  93                 esac
  94                 ;;
  95         -b|--browser|--browser=*)
  96                 case "$#,$1" in
  97                 *,*=*)
  98                         browser=`expr "$1" : '-[^=]*=\(.*\)'` ;;
  99                 1,*)
 100                         usage ;;
 101                 *)
 102                         browser="$2"
 103                         shift ;;
 104                 esac
 105                 ;;
 106         -p|--port|--port=*)
 107                 case "$#,$1" in
 108                 *,*=*)
 109                         port=`expr "$1" : '-[^=]*=\(.*\)'` ;;
 110                 1,*)
 111                         usage ;;
 112                 *)
 113                         port="$2"
 114                         shift ;;
 115                 esac
 116                 ;;
 117         -m|--module-path=*|--module-path)
 118                 case "$#,$1" in
 119                 *,*=*)
 120                         module_path=`expr "$1" : '-[^=]*=\(.*\)'` ;;
 121                 1,*)
 122                         usage ;;
 123                 *)
 124                         module_path="$2"
 125                         shift ;;
 126                 esac
 127                 ;;
 128         *)
 129                 usage
 130                 ;;
 131         esac
 132         shift
 133 done
 134
 135 mkdir -p "$GIT_DIR/gitweb/tmp"
 136 GIT_EXEC_PATH="`git --exec-path`"
 137 GIT_DIR="$fqgitdir"
 138 export GIT_EXEC_PATH GIT_DIR
 139
 140
 141 webrick_conf () {
 142         # generate a standalone server script in $fqgitdir/gitweb.
 143         cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
 144 require 'webrick'
 145 require 'yaml'
 146 options = YAML::load_file(ARGV[0])
 147 options[:StartCallback] = proc do
 148   File.open(options[:PidFile],"w") do |f|
 149     f.puts Process.pid
 150   end
 151 end
 152 options[:ServerType] = WEBrick::Daemon
 153 server = WEBrick::HTTPServer.new(options)
 154 ['INT', 'TERM'].each do |signal|
 155   trap(signal) {server.shutdown}
 156 end
 157 server.start
 158 EOF
 159         # generate a shell script to invoke the above ruby script,
 160         # which assumes _ruby_ is in the user's $PATH. that's _one_
 161         # portable way to run ruby, which could be installed anywhere,
 162         # really.
 163         cat >"$fqgitdir/gitweb/$httpd" <<EOF
 164 #!/bin/sh
 165 exec ruby "$fqgitdir/gitweb/$httpd.rb" \$*
 166 EOF
 167         chmod +x "$fqgitdir/gitweb/$httpd"
 168
 169         cat >"$conf" <<EOF
 170 :Port: $port
 171 :DocumentRoot: "$fqgitdir/gitweb"
 172 :DirectoryIndex: ["gitweb.cgi"]
 173 :PidFile: "$fqgitdir/pid"
 174 EOF
 175         test "$local" = true && echo ':BindAddress: "127.0.0.1"' >> "$conf"
 176 }
 177
 178 lighttpd_conf () {
 179         cat > "$conf" <<EOF
 180 server.document-root = "$fqgitdir/gitweb"
 181 server.port = $port
 182 server.modules = ( "mod_cgi" )
 183 server.indexfiles = ( "gitweb.cgi" )
 184 server.pid-file = "$fqgitdir/pid"
 185 cgi.assign = ( ".cgi" => "" )
 186 mimetype.assign = ( ".css" => "text/css" )
 187 EOF
 188         test "$local" = true && echo 'server.bind = "127.0.0.1"' >> "$conf"
 189 }
 190
 191 apache2_conf () {
 192         test -z "$module_path" && module_path=/usr/lib/apache2/modules
 193         mkdir -p "$GIT_DIR/gitweb/logs"
 194         bind=
 195         test "$local" = true && bind='127.0.0.1:'
 196         echo 'text/css css' > $fqgitdir/mime.types
 197         cat > "$conf" <<EOF
 198 ServerName "git-instaweb"
 199 ServerRoot "$fqgitdir/gitweb"
 200 DocumentRoot "$fqgitdir/gitweb"
 201 PidFile "$fqgitdir/pid"
 202 Listen $bind$port
 203 EOF
 204
 205         for mod in mime dir; do
 206                 if test -e $module_path/mod_${mod}.so; then
 207                         echo "LoadModule ${mod}_module " \
 208                              "$module_path/mod_${mod}.so" >> "$conf"
 209                 fi
 210         done
 211         cat >> "$conf" <<EOF
 212 TypesConfig $fqgitdir/mime.types
 213 DirectoryIndex gitweb.cgi
 214 EOF
 215
 216         # check to see if Dennis Stosberg's mod_perl compatibility patch
 217         # (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
 218         if test -f "$module_path/mod_perl.so" && grep '^our $gitbin' \
 219                                 "$GIT_DIR/gitweb/gitweb.cgi" >/dev/null
 220         then
 221                 # favor mod_perl if available
 222                 cat >> "$conf" <<EOF
 223 LoadModule perl_module $module_path/mod_perl.so
 224 PerlPassEnv GIT_DIR
 225 PerlPassEnv GIT_EXEC_DIR
 226 <Location /gitweb.cgi>
 227         SetHandler perl-script
 228         PerlResponseHandler ModPerl::Registry
 229         PerlOptions +ParseHeaders
 230         Options +ExecCGI
 231 </Location>
 232 EOF
 233         else
 234                 # plain-old CGI
 235                 list_mods=`echo "$httpd" | sed "s/-f$/-l/"`
 236                 $list_mods | grep 'mod_cgi\.c' >/dev/null 2>&1 || \
 237                 echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
 238                 cat >> "$conf" <<EOF
 239 AddHandler cgi-script .cgi
 240 <Location /gitweb.cgi>
 241         Options +ExecCGI
 242 </Location>
 243 EOF
 244         fi
 245 }
 246
 247 script='
 248 s#^\(my\|our\) $projectroot =.*#\1 $projectroot = "'`dirname $fqgitdir`'";#
 249 s#\(my\|our\) $gitbin =.*#\1 $gitbin = "'$GIT_EXEC_PATH'";#
 250 s#\(my\|our\) $projects_list =.*#\1 $projects_list = $projectroot;#
 251 s#\(my\|our\) $git_temp =.*#\1 $git_temp = "'$fqgitdir/gitweb/tmp'";#'
 252
 253 gitweb_cgi () {
 254         cat > "$1.tmp" <<\EOFGITWEB
 255 @@GITWEB_CGI@@
 256 EOFGITWEB
 257         sed "$script" "$1.tmp"  > "$1"
 258         chmod +x "$1"
 259         rm -f "$1.tmp"
 260 }
 261
 262 gitweb_css () {
 263         cat > "$1" <<\EOFGITWEB
 264 @@GITWEB_CSS@@
 265 EOFGITWEB
 266 }
 267
 268 gitweb_cgi $GIT_DIR/gitweb/gitweb.cgi
 269 gitweb_css $GIT_DIR/gitweb/gitweb.css
 270
 271 case "$httpd" in
 272 *lighttpd*)
 273         lighttpd_conf
 274         ;;
 275 *apache2*)
 276         apache2_conf
 277         ;;
 278 webrick)
 279         webrick_conf
 280         ;;
 281 *)
 282         echo "Unknown httpd specified: $httpd"
 283         exit 1
 284         ;;
 285 esac
 286
 287 start_httpd
 288 test -z "$browser" && browser=echo
 289 url=http://127.0.0.1:$port
 290 $browser $url || echo $url