plc.d/httpd

   1 #!/bin/bash
   2 #
   3 # priority: 600
   4 #
   5 # Configure Apache web server
   6 #
   7 # Mark Huang <mlhuang@cs.princeton.edu>
   8 # Copyright (C) 2006 The Trustees of Princeton University
   9 #
  10
  11 # Source function library and configuration
  12 . /etc/plc.d/functions
  13 . /etc/planetlab/plc_config
  14
  15 # Be verbose
  16 set -x
  17
  18 # Default locations
  19 DocumentRoot=/var/www/html
  20 php_ini=/etc/php.ini
  21 httpd_conf=/etc/httpd/conf/httpd.conf
  22 ssl_conf=/etc/httpd/conf.d/ssl.conf
  23 plc_conf=/etc/httpd/conf.d/plc.conf
  24 php_fpm_conf=/etc/php-fpm.d/plc.conf
  25 php_fpm_dir=$(dirname $php_fpm_conf)
  26
  27 function disable_file () {
  28     file=$1; shift
  29     [ -f $file ] && mv -f $file $file.disabled
  30 }
  31 function enable_file () {
  32     file=$1; shift
  33     [ ! -f $file ] && mv -f $file.disabled $file
  34 }
  35
  36 case "$1" in
  37     start)
  38         if [ "$PLC_API_ENABLED" != "1" -a \
  39              "$PLC_BOOT_ENABLED" != "1" -a \
  40              "$PLC_WWW_ENABLED" != "1" ] ; then
  41             exit 0
  42         fi
  43
  44         MESSAGE=$"Starting web server"
  45         dialog "$MESSAGE"
  46
  47         # set document root - not really useful on fedora but just in case
  48         sed -i -e "s@^DocumentRoot.*@DocumentRoot \"$DocumentRoot\"@" $httpd_conf
  49         # whether WWW is enabled or not :
  50         if [ "$PLC_WWW_ENABLED" != "1" ] ; then
  51             # avoid hitting drupal, that would try to connect to the db and create noise
  52             disable_file $DocumentRoot/index.php
  53         else
  54             enable_file $DocumentRoot/index.php
  55         fi
  56
  57         # Set the default include path
  58         include_path=".:$DocumentRoot/planetlab/includes:$DocumentRoot/plekit/php:$DocumentRoot/generated:/etc/planetlab/php:/usr/share/plc_api/php"
  59         sed -i -e "s@[;]*include_path = \"\.:.*\"@include_path = \"$include_path\"@" $php_ini
  60
  61         # Set open_basedir so as to avoid leaks
  62         open_basedir="$DocumentRoot:/etc/planetlab/php:/usr/share/plc_api/php:/var/log/myslice:/var/tmp/bootmedium:/var/log/bm:/tmp"
  63         sed -i -e "s@[;]*open_basedir =.*@open_basedir = \"$open_basedir\"@" $php_ini
  64
  65         # for php-5.3 under fedora12, otherwise issues tons of warning messages
  66         # Set timezone in php.ini if not already there
  67         if grep '^;date.timezone' $php_ini >& /dev/null; then
  68             dialog 'Setting PHP timezone to GMT'
  69             sed -i -e 's,^;date.timezone.*,date.timezone = GMT,' $php_ini
  70         fi
  71
  72         if grep '^short_open_tag = Off' $php_ini >& /dev/null; then
  73             sed -i -e 's,^short_open_tag = Off,short_open_tag = On,' $php_ini
  74         fi
  75
  76         ## patch php.ini
  77         # memory limit
  78         sed -i -e 's,^memory_limit = 32M *;,memory_limit = 80M ; patch myplc -- ,' $php_ini
  79         # log_errors : is On by default
  80         # error_log
  81         if ! grep '^error_log *=' $php_ini > /dev/null ; then
  82           echo 'error_log = /var/log/php.log' >> $php_ini
  83           touch /var/log/php.log
  84           chmod 666 /var/log/php.log
  85         fi
  86
  87         # configure php-fpm as well if present (starting with f27)
  88         [ -d $php_fpm_dir ] && cat > $php_fpm_conf << EOF
  89 [www]
  90 php_value[include_path] = $include_path
  91 php_value[open_basedir] = $open_basedir
  92 php_value[date.timezone] = GMT
  93 php_value[short_open_tag] = On
  94 php_value[memory_limit] = 80M
  95 EOF
  96
  97         # Disable default Listen directive
  98         sed -i -e '/^Listen/d' $httpd_conf
  99
 100         plc_api_path_noslash=$(echo $PLC_API_PATH | sed -e s,/,,g)
 101         # Set the port numbers
 102         for server in WWW API BOOT ; do
 103             enabled=PLC_${server}_ENABLED
 104             if [ "${!enabled}" != "1" ] ; then
 105                 continue
 106             fi
 107             hostname=PLC_${server}_HOST
 108             http_port=PLC_${server}_PORT
 109             https_port=PLC_${server}_SSL_PORT
 110
 111             # API should always be accessed via SSL
 112             if [ "$server" = "API" ] ; then
 113                 https_port=${!http_port}
 114                 http_port=
 115             fi
 116
 117             # Check if we are already listening on these ports
 118             skip_http=0
 119             skip_https=0
 120             for previous_server in WWW API BOOT ; do
 121                 if [ "$server" = "$previous_server" ] ; then
 122                     break
 123                 fi
 124                 previous_enabled=PLC_${previous_server}_ENABLED
 125                 if [ "${!previous_enabled}" != "1" ] ; then
 126                     continue
 127                 fi
 128                 previous_http_port=PLC_${previous_server}_PORT
 129                 previous_https_port=PLC_${previous_server}_SSL_PORT
 130
 131                 if [ -z "${http_port}" ]; then
 132                     skip_http=1;
 133                 elif [ -z "${!http_port}" ]; then
 134                     skip_http=1;
 135                 elif [ "${!http_port}" = "${!previous_http_port}" ] ; then
 136                     skip_http=1
 137                 fi
 138                 if [ -z "${https_port}" ]; then
 139                     skip_https=1
 140                 elif [ -z "${!https_port}" ]; then
 141                     skip_https=1
 142                 elif [ "${!https_port}" = "${!previous_https_port}" ] ; then
 143                     skip_https=1
 144                 fi
 145             done
 146
 147             # HTTP configuration
 148             if [ $skip_http -eq 0 ] ; then
 149                 cat <<EOF
 150 Listen ${!http_port}
 151 <VirtualHost *:${!http_port}>
 152     # Make sure that the admin web pages are always accessed via SSL
 153     Redirect /db https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/db
 154     Redirect /planetlab https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/planetlab
 155 # as a matter of fact most xmlrpc clients won't follow the redirection
 156 # so this is mostly rethorical, but just in case...
 157    Redirect /$plc_api_path_noslash https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/$plc_api_path_noslash
 158 </VirtualHost>
 159
 160 EOF
 161             fi
 162
 163             # HTTPS configuration
 164             if [ $skip_https -eq 0 ] ; then
 165                 # XXX Cannot support NameVirtualHost over SSL. If
 166                 # the API, boot, and web servers are all running
 167                 # on the same machine, the web server certificate
 168                 # takes precedence.
 169                 sed -i \
 170                     -e "s/^Listen .*/Listen ${!https_port}/" \
 171                     -e "s/<VirtualHost _default_:.*>/<VirtualHost _default_:${!https_port}>/" \
 172                     $ssl_conf
 173                 # this is used to locate the right certificates
 174                 server_lower=$(echo $server | tr 'A-Z' 'a-z')
 175
 176                 # which one is used is currently configured in myplc.spec,
 177                 # with mod_python preferred
 178                 if rpm -q mod_python >& /dev/null ; then
 179                     configure_for_mod_python=true
 180                 elif rpm -q mod_wsgi >& /dev/null ; then
 181                     configure_for_mod_wsgi=true
 182                 else
 183                     echo "Requires mod_python or mod_wsgi.... exiting"
 184                     exit 1
 185                 fi
 186
 187                 # It would be tempting to use <IfModule> here
 188                 # but early tests showed this could be tricky/fragile
 189                 # So let's hard-wire it for one module
 190                 # A lot of trial-and -error was involved in getting this that way...
 191
 192                 if [ -n "$configure_for_mod_python" ] ; then
 193 #################### for mod_python
 194                     cat <<EOF
 195 # mod_python location
 196 <Location /PLCAPI/>
 197     SetHandler mod_python
 198     PythonPath "sys.path + ['/usr/share/plc_api']"
 199     PythonHandler apache.ModPython
 200 </Location>
 201 EOF
 202
 203                 elif [ -n "$configure_for_mod_wsgi" ] ; then
 204 #################### for mod_wsgi
 205                     cat <<EOF
 206 # create wsgi socket where we have the permission
 207 WSGISocketPrefix run/wsgi
 208
 209 <VirtualHost *:${!https_port}>
 210
 211    # SSL
 212    SSLEngine On
 213    SSLCertificateFile /etc/planetlab/${server_lower}_ssl.crt
 214    SSLCertificateKeyFile /etc/planetlab/${server_lower}_ssl.key
 215    SSLCertificateChainFile /etc/planetlab/${server_lower}_ca_ssl.crt
 216
 217    WSGIScriptAlias /$plc_api_path_noslash /usr/share/plc_api/apache/plc.wsgi
 218 # xxx would be cool to be able to tweak this through config
 219    WSGIDaemonProcess plcapi-wsgi-ssl user=apache group=apache processes=1 threads=25
 220    WSGIProcessGroup plcapi-wsgi-ssl
 221
 222    <Directory "/usr/share/plc_api/apache">
 223       Options +ExecCGI
 224       $(apache_allow)
 225    </Directory>
 226
 227 </VirtualHost>
 228 EOF
 229                 fi
 230             fi
 231         done >$plc_conf
 232
 233         # Set custom Apache directives
 234         (
 235             # could be restricted to boot boxes but harmless..
 236             cat <<EOF
 237 AddType application/octet-stream .iso
 238 AddType application/octet-stream .usb
 239 EOF
 240             # make sure /PLCAPI can't get accessed if API not enabled here
 241             if [ "$PLC_API_ENABLED" != "1" ] ; then
 242                 cat <<EOF
 243 # mod_wsgi location
 244 <Location $PLC_API_PATH>
 245     $(apache_forbid)
 246 </Location>
 247 EOF
 248             fi
 249
 250             # redirect www requests if not on the right server
 251             if [ "$PLC_WWW_ENABLED" != "1" ] ; then
 252                 cat <<EOF
 253 Redirect /index.html http://$PLC_WWW_HOST:$PLC_WWW_PORT/
 254 EOF
 255             fi
 256         ) >>$plc_conf
 257
 258         # Make alpina-logs directory writable for bootmanager log upload
 259         chown apache:apache $DocumentRoot/alpina-logs/nodes
 260
 261         # Make the Drupal files upload directory owned by Apache
 262         mkdir -p $DocumentRoot/files
 263         chown apache:apache $DocumentRoot/files
 264
 265         # Symlink any (real) files or directories in
 266         # /data/var/www/html/* to /var/www/html/. We could descend
 267         # into subdirectories, but the code to do so properly would be
 268         # madness.
 269         for file in /data/$DocumentRoot/* ; do
 270             if [ -e "$file" -a ! -h "$file" ] ; then
 271                 base=$(basename "$file")
 272                 if [ ! -e "$DocumentRoot/$base" ] ; then
 273                     ln -nsf "$file" "$DocumentRoot/$base"
 274                 fi
 275             fi
 276         done
 277
 278         # Cleanup broken symlinks
 279         for file in $DocumentRoot/* ; do
 280             if [ -h "$file" -a ! -e "$file" ] ; then
 281                 rm -f "$file"
 282             fi
 283         done
 284
 285         # Old style PHP constants
 286         mkdir -p /etc/planetlab/php
 287         cat >/etc/planetlab/php/site_constants.php <<"EOF"
 288 <?php
 289 include('plc_config.php');
 290
 291 define('PL_API_SERVER', PLC_API_HOST);
 292 define('PL_API_PATH', PLC_API_PATH);
 293 define('PL_API_PORT', PLC_API_PORT);
 294 define('PL_API_CAPABILITY_AUTH_METHOD', 'capability');
 295 define('PL_API_CAPABILITY_PASS', PLC_API_MAINTENANCE_PASSWORD);
 296 define('PL_API_CAPABILITY_USERNAME', PLC_API_MAINTENANCE_USER);
 297 define('WWW_BASE', PLC_WWW_HOST);
 298 define('BOOT_BASE', PLC_BOOT_HOST);
 299 define('DEBUG', PLC_WWW_DEBUG);
 300 define('API_CALL_DEBUG', PLC_API_DEBUG);
 301 define('SENDMAIL', PLC_MAIL_ENABLED);
 302 define('PLANETLAB_SUPPORT_EMAIL', PLC_NAME . ' Support <' . PLC_MAIL_SUPPORT_ADDRESS . '>');
 303 define('PLANETLAB_SUPPORT_EMAIL_ONLY', PLC_MAIL_SUPPORT_ADDRESS);
 304 ?>
 305 EOF
 306
 307         ## make room for logs
 308         touch /var/log/plcapi.log
 309         chmod 666 /var/log/plcapi.log
 310
 311         plc_daemon httpd
 312         check
 313
 314         result "$MESSAGE"
 315         ;;
 316
 317     stop)
 318         MESSAGE=$"Stopping web server"
 319         dialog "$MESSAGE"
 320
 321         killproc plc_httpd
 322         check
 323
 324         result "$MESSAGE"
 325         ;;
 326 esac
 327
 328 exit $ERRORS