git-instaweb.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Eric Wong
   4 #
   5
   6 PERL='@@PERL@@'
   7 OPTIONS_KEEPDASHDASH=
   8 OPTIONS_SPEC="\
   9 git-instaweb [options] (--start | --stop | --restart)
  10 --
  11 l,local        only bind on 127.0.0.1
  12 p,port=        the port to bind to
  13 d,httpd=       the command to launch
  14 b,browser=     the browser to launch
  15 m,module-path= the module path (only needed for apache2)
  16  Action
  17 stop           stop the web server
  18 start          start the web server
  19 restart        restart the web server
  20 "
  21
  22 . git-sh-setup
  23
  24 fqgitdir="$GIT_DIR"
  25 local="$(git config --bool --get instaweb.local)"
  26 httpd="$(git config --get instaweb.httpd)"
  27 port=$(git config --get instaweb.port)
  28 module_path="$(git config --get instaweb.modulepath)"
  29
  30 conf="$GIT_DIR/gitweb/httpd.conf"
  31
  32 # Defaults:
  33
  34 # if installed, it doesn't need further configuration (module_path)
  35 test -z "$httpd" && httpd='lighttpd -f'
  36
  37 # any untaken local port will do...
  38 test -z "$port" && port=1234
  39
  40 resolve_full_httpd () {
  41         case "$httpd" in
  42         *apache2*|*lighttpd*)
  43                 # ensure that the apache2/lighttpd command ends with "-f"
  44                 if ! echo "$httpd" | grep -- '-f *$' >/dev/null 2>&1
  45                 then
  46                         httpd="$httpd -f"
  47                 fi
  48                 ;;
  49         esac
  50
  51         httpd_only="$(echo $httpd | cut -f1 -d' ')"
  52         if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null;; esac
  53         then
  54                 full_httpd=$httpd
  55         else
  56                 # many httpds are installed in /usr/sbin or /usr/local/sbin
  57                 # these days and those are not in most users $PATHs
  58                 # in addition, we may have generated a server script
  59                 # in $fqgitdir/gitweb.
  60                 for i in /usr/local/sbin /usr/sbin "$fqgitdir/gitweb"
  61                 do
  62                         if test -x "$i/$httpd_only"
  63                         then
  64                                 full_httpd=$i/$httpd
  65                                 return
  66                         fi
  67                 done
  68
  69                 echo >&2 "$httpd_only not found. Install $httpd_only or use" \
  70                      "--httpd to specify another httpd daemon."
  71                 exit 1
  72         fi
  73 }
  74
  75 start_httpd () {
  76         # here $httpd should have a meaningful value
  77         resolve_full_httpd
  78
  79         # don't quote $full_httpd, there can be arguments to it (-f)
  80         $full_httpd "$fqgitdir/gitweb/httpd.conf"
  81         if test $? != 0; then
  82                 echo "Could not execute http daemon $httpd."
  83                 exit 1
  84         fi
  85 }
  86
  87 stop_httpd () {
  88         test -f "$fqgitdir/pid" && kill $(cat "$fqgitdir/pid")
  89 }
  90
  91 while test $# != 0
  92 do
  93         case "$1" in
  94         --stop|stop)
  95                 stop_httpd
  96                 exit 0
  97                 ;;
  98         --start|start)
  99                 start_httpd
 100                 exit 0
 101                 ;;
 102         --restart|restart)
 103                 stop_httpd
 104                 start_httpd
 105                 exit 0
 106                 ;;
 107         -l|--local)
 108                 local=true
 109                 ;;
 110         -d|--httpd)
 111                 shift
 112                 httpd="$1"
 113                 ;;
 114         -b|--browser)
 115                 shift
 116                 browser="$1"
 117                 ;;
 118         -p|--port)
 119                 shift
 120                 port="$1"
 121                 ;;
 122         -m|--module-path)
 123                 shift
 124                 module_path="$1"
 125                 ;;
 126         --)
 127                 ;;
 128         *)
 129                 usage
 130                 ;;
 131         esac
 132         shift
 133 done
 134
 135 mkdir -p "$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 x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$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 x"$local" = xtrue && 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 $module_path/mod_perl.so
 224 PerlPassEnv GIT_DIR
 225 PerlPassEnv GIT_EXEC_DIR
 226 <Location /gitweb.cgi>
 227         SetHandler perl-script
 228         PerlResponseHandler ModPerl::Registry
 229         PerlOptions +ParseHeaders
 230         Options +ExecCGI
 231 </Location>
 232 EOF
 233         else
 234                 # plain-old CGI
 235                 resolve_full_httpd
 236                 list_mods=$(echo "$full_httpd" | sed "s/-f$/-l/")
 237                 $list_mods | grep 'mod_cgi\.c' >/dev/null 2>&1 || \
 238                 echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
 239                 cat >> "$conf" <<EOF
 240 AddHandler cgi-script .cgi
 241 <Location /gitweb.cgi>
 242         Options +ExecCGI
 243 </Location>
 244 EOF
 245         fi
 246 }
 247
 248 script='
 249 s#^(my|our) \$projectroot =.*#$1 \$projectroot = "'$(dirname "$fqgitdir")'";#;
 250 s#(my|our) \$gitbin =.*#$1 \$gitbin = "'$GIT_EXEC_PATH'";#;
 251 s#(my|our) \$projects_list =.*#$1 \$projects_list = \$projectroot;#;
 252 s#(my|our) \$git_temp =.*#$1 \$git_temp = "'$fqgitdir/gitweb/tmp'";#;'
 253
 254 gitweb_cgi () {
 255         cat > "$1.tmp" <<\EOFGITWEB
 256 @@GITWEB_CGI@@
 257 EOFGITWEB
 258         # Use the configured full path to perl to match the generated
 259         # scripts' 'hashpling' line
 260         "$PERL" -p -e "$script" "$1.tmp"  > "$1"
 261         chmod +x "$1"
 262         rm -f "$1.tmp"
 263 }
 264
 265 gitweb_css () {
 266         cat > "$1" <<\EOFGITWEB
 267 @@GITWEB_CSS@@
 268 EOFGITWEB
 269 }
 270
 271 gitweb_cgi "$GIT_DIR/gitweb/gitweb.cgi"
 272 gitweb_css "$GIT_DIR/gitweb/gitweb.css"
 273
 274 case "$httpd" in
 275 *lighttpd*)
 276         lighttpd_conf
 277         ;;
 278 *apache2*)
 279         apache2_conf
 280         ;;
 281 webrick)
 282         webrick_conf
 283         ;;
 284 *)
 285         echo "Unknown httpd specified: $httpd"
 286         exit 1
 287         ;;
 288 esac
 289
 290 start_httpd
 291 url=http://127.0.0.1:$port
 292
 293 if test -n "$browser"; then
 294         git web--browse -b "$browser" $url || echo $url
 295 else
 296         git web--browse -c "instaweb.browser" $url || echo $url
 297 fi