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#!/bin/sh # # Copyright (c) 2006 Eric Wong # PERL='/usr/bin/perl' OPTIONS_KEEPDASHDASH= OPTIONS_STUCKLONG= 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 " SUBDIRECTORY_OK=Yes . 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)" action="browse" 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 /usr/share/gitweb test -z "$root" && root='/usr/share/gitweb' # any untaken local port will do... test -z "$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" | 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 ;; *webrick*) # server is started by running via generated webrick.rb in # $fqgitdir/gitweb full_httpd="$fqgitdir/gitweb/webrick.rb" httpd_only="${httpd%% *}" # cut on first space return ;; *python*) # server is started by running via generated gitweb.py in # $fqgitdir/gitweb full_httpd="$fqgitdir/gitweb/gitweb.py" 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 echo "Instance already running. Restarting..." stop_httpd fi # here $httpd should have a meaningful value resolve_full_httpd mkdir -p "$fqgitdir/gitweb/$httpd_only" conf="$fqgitdir/gitweb/$httpd_only.conf" # generate correct config file if it doesn't exist test -f "$conf" || configure_httpd test -f "$fqgitdir/gitweb/gitweb_config.perl" || gitweb_conf # don't quote $full_httpd, there can be arguments to it (-f) case "$httpd" in *mongoose*|*plackup*|*python*) #These servers don't have a daemon mode so we'll have to fork it $full_httpd "$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 ;; *) $full_httpd "$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) action="stop" ;; --start|start) action="start" ;; --restart|restart) action="restart" ;; -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="$fqgitdir/gitweb/gitweb_config.perl" export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG webrick_conf () { # webrick seems to have no way of passing arbitrary environment # variables to the underlying CGI executable, so we wrap the # actual gitweb.cgi using a shell script to force it wrapper="$fqgitdir/gitweb/$httpd/wrapper.sh" cat > "$wrapper" <<EOF #!/bin/sh # we use this shell script wrapper around the real gitweb.cgi since # there appears to be no other way to pass arbitrary environment variables # into the CGI process GIT_EXEC_PATH=$GIT_EXEC_PATH GIT_DIR=$GIT_DIR GITWEB_CONFIG=$GITWEB_CONFIG export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG exec $root/gitweb.cgi EOF chmod +x "$wrapper" # This assumes _ruby_ is in the user's $PATH. that's _one_ # portable way to run ruby, which could be installed anywhere, really. # generate a standalone server script in $fqgitdir/gitweb. cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF #!/usr/bin/env ruby require 'webrick' require 'logger' options = { :Port => $port, :DocumentRoot => "$root", :Logger => Logger.new('$fqgitdir/gitweb/error.log'), :AccessLog => [ [ Logger.new('$fqgitdir/gitweb/access.log'), WEBrick::AccessLog::COMBINED_LOG_FORMAT ] ], :DirectoryIndex => ["gitweb.cgi"], :CGIInterpreter => "$wrapper", :StartCallback => lambda do File.open("$fqgitdir/pid", "w") { |f| f.puts Process.pid } end, :ServerType => WEBrick::Daemon, } options[:BindAddress] = '127.0.0.1' if "$local" == "true" server = WEBrick::HTTPServer.new(options) ['INT', 'TERM'].each do |signal| trap(signal) {server.shutdown} end server.start EOF chmod +x "$fqgitdir/gitweb/$httpd.rb" # configuration is embedded in server script file, webrick.rb rm -f "$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 () { for candidate in \ /etc/httpd \ /usr/lib/apache2 \ /usr/lib/httpd ; do if test -d "$candidate/modules" then module_path="$candidate/modules" break fi done 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 mpm_event mpm_prefork mpm_worker do if test -e $module_path/mod_${mod}.so then echo "LoadModule ${mod}_module " \ "$module_path/mod_${mod}.so" >> "$conf" # only one mpm module permitted break fi done for mod in mime dir env log_config authz_core unixd 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 if test -f "$module_path/mod_perl.so" then # favor mod_perl if available cat >> "$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/') $list_mods | grep 'mod_cgi\.c' >/dev/null 2>&1 || \ if test -f "$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 (caller) { return \$app; } else { 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" } python_conf() { # Python's builtin http.server and its CGI support is very limited. # CGI handler is capable of running CGI script only from inside a directory. # Trying to set cgi_directories=["/"] will add double slash to SCRIPT_NAME # and that in turn breaks gitweb's relative link generation. # create a simple web root where $fqgitdir/gitweb/$httpd_only is our root mkdir -p "$fqgitdir/gitweb/$httpd_only/cgi-bin" # Python http.server follows the symlinks ln -sf "$root/gitweb.cgi" "$fqgitdir/gitweb/$httpd_only/cgi-bin/gitweb.cgi" ln -sf "$root/static" "$fqgitdir/gitweb/$httpd_only/" # generate a standalone 'python http.server' script in $fqgitdir/gitweb # This asumes that python is in user's $PATH # This script is Python 2 and 3 compatible cat > "$fqgitdir/gitweb/gitweb.py" <<EOF #!/usr/bin/env python import os import sys # Open log file in line buffering mode accesslogfile = open("$fqgitdir/gitweb/access.log", 'a', buffering=1) errorlogfile = open("$fqgitdir/gitweb/error.log", 'a', buffering=1) # and replace our stdout and stderr with log files # also do a lowlevel duplicate of the logfile file descriptors so that # our CGI child process writes any stderr warning also to the log file _orig_stdout_fd = sys.stdout.fileno() sys.stdout.close() os.dup2(accesslogfile.fileno(), _orig_stdout_fd) sys.stdout = accesslogfile _orig_stderr_fd = sys.stderr.fileno() sys.stderr.close() os.dup2(errorlogfile.fileno(), _orig_stderr_fd) sys.stderr = errorlogfile from functools import partial if sys.version_info < (3, 0): # Python 2 from CGIHTTPServer import CGIHTTPRequestHandler from BaseHTTPServer import HTTPServer as ServerClass else: # Python 3 from http.server import CGIHTTPRequestHandler from http.server import HTTPServer as ServerClass # Those environment variables will be passed to the cgi script os.environ.update({ "GIT_EXEC_PATH": "$GIT_EXEC_PATH", "GIT_DIR": "$GIT_DIR", "GITWEB_CONFIG": "$GITWEB_CONFIG" }) class GitWebRequestHandler(CGIHTTPRequestHandler): def log_message(self, format, *args): # Write access logs to stdout sys.stdout.write("%s - - [%s] %s\n" % (self.address_string(), self.log_date_time_string(), format%args)) def do_HEAD(self): self.redirect_path() CGIHTTPRequestHandler.do_HEAD(self) def do_GET(self): if self.path == "/": self.send_response(303, "See Other") self.send_header("Location", "/cgi-bin/gitweb.cgi") self.end_headers() return self.redirect_path() CGIHTTPRequestHandler.do_GET(self) def do_POST(self): self.redirect_path() CGIHTTPRequestHandler.do_POST(self) # rewrite path of every request that is not gitweb.cgi to out of cgi-bin def redirect_path(self): if not self.path.startswith("/cgi-bin/gitweb.cgi"): self.path = self.path.replace("/cgi-bin/", "/") # gitweb.cgi is the only thing that is ever going to be run here. # Ignore everything else def is_cgi(self): result = False if self.path.startswith('/cgi-bin/gitweb.cgi'): result = CGIHTTPRequestHandler.is_cgi(self) return result bind = "127.0.0.1" if "$local" == "true": bind = "0.0.0.0" # Set our http root directory # This is a work around for a missing directory argument in older Python versions # as this was added to SimpleHTTPRequestHandler in Python 3.7 os.chdir("$fqgitdir/gitweb/$httpd_only/") GitWebRequestHandler.protocol_version = "HTTP/1.0" httpd = ServerClass((bind, $port), GitWebRequestHandler) sa = httpd.socket.getsockname() print("Serving HTTP on", sa[0], "port", sa[1], "...") httpd.serve_forever() EOF chmod a+x "$fqgitdir/gitweb/gitweb.py" } 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; \$feature{'remote_heads'}{'default'} = [1]; EOF } configure_httpd() { case "$httpd" in *lighttpd*) lighttpd_conf ;; *apache2*|*httpd*) apache2_conf ;; webrick) webrick_conf ;; *mongoose*) mongoose_conf ;; *plackup*) plackup_conf ;; *python*) python_conf ;; *) echo "Unknown httpd specified: $httpd" exit 1 ;; esac } case "$action" in stop) stop_httpd exit 0 ;; start) start_httpd exit 0 ;; restart) stop_httpd start_httpd exit 0 ;; esac gitweb_conf resolve_full_httpd mkdir -p "$fqgitdir/gitweb/$httpd_only" conf="$fqgitdir/gitweb/$httpd_only.conf" configure_httpd 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