net/siproxd/files/siproxd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2008 Alina Friedrichsen
   3 # Copyright (C) 2011 OpenWrt.org
   4
   5 START=50
   6
   7 USE_PROCD=1
   8
   9 PROG="/usr/sbin/siproxd"
  10 CONF_DIR="/var/etc/siproxd"
  11 REG_DIR="/var/lib/siproxd"
  12 PID_DIR="/var/run/siproxd"
  13 PLUGIN_DIR="/usr/lib/siproxd/"
  14 SIPROXD_UID="nobody"
  15 SIPROXD_GID="nogroup"
  16
  17 # Some options need special handling or conflict with procd/jail setup.
  18 append CONF_SKIP "interface_inbound interface_outbound chrootjail"
  19 append CONF_SKIP "daemonize user plugindir registration_file pid_file"
  20
  21
  22 # Check if a UCI option is set, or else apply a provided default.
  23
  24 default_conf() {
  25         local opt="$1"
  26         local default="$2"
  27         local val
  28
  29         config_get "$opt" "$sec" "$opt"
  30         eval "val=\"\${$opt}\""
  31
  32         [ -z "$val" ] || return 0
  33         [ -n "$default" ] || return 0
  34         config_set "$sec" "$opt" "$default"
  35         append_conf "$opt" = "$default"
  36 }
  37
  38 append_conf() {
  39         echo $* >> "$CONF_DIR/siproxd-$sec.conf"
  40 }
  41
  42 # Resolve network device by layer 3 first, then layer 2
  43
  44 siproxd_get_device() {
  45         network_get_device $1 $2 || network_get_physdev $1 $2
  46 }
  47
  48 # Use user-friendly network names (e.g. "wan", "lan") from options
  49 # 'interface_inbound' and 'interface_outbound', but use standard siproxd
  50 # parameters 'if_inbound' and 'if_outbound' if explicitly set.
  51
  52 setup_networks() {
  53         local sec="$1"
  54         local _int_inbound _int_outbound
  55         local _dev_inbound _dev_outbound
  56
  57         config_get _int_inbound "$sec" interface_inbound
  58         config_get _int_outbound "$sec" interface_outbound
  59
  60         siproxd_get_device _dev_inbound $_int_inbound
  61         siproxd_get_device _dev_outbound $_int_outbound
  62
  63         default_conf if_inbound $_dev_inbound
  64         default_conf if_outbound $_dev_outbound
  65 }
  66
  67 # Apply default values to key options if unset in user's UCI config.
  68
  69 apply_defaults() {
  70         local sec="$1"
  71
  72         default_conf sip_listen_port 5060
  73         default_conf autosave_registrations 300
  74         default_conf rtp_port_low 7070
  75         default_conf rtp_port_high 7089
  76         default_conf rtp_timeout 300
  77         default_conf rtp_dscp 46
  78         default_conf tcp_timeout 600
  79         default_conf tcp_keepalive 20
  80         default_conf default_expires 600
  81         default_conf daemonize 0
  82         default_conf user "$SIPROXD_UID"
  83         default_conf registration_file "$REG_DIR/siproxd-$sec.reg"
  84         default_conf plugindir "$PLUGIN_DIR"
  85 }
  86
  87 # Handle activities at start of a new 'siproxd' section.
  88 # Initialize section processing and save section name.
  89
  90 section_start() {
  91         local sec="$1"
  92
  93         rm -f "$CONF_DIR/siproxd-$sec.conf"
  94         append_conf "# config auto-generated from /etc/config/siproxd"
  95 }
  96
  97 # Handle activities at close of a 'siproxd' section.
  98 # Parse OpenWRT interface names (e.g. "wan"), apply defaults and
  99 # set up procd jail.
 100
 101 section_end() {
 102         local sec="$1"
 103
 104         local conf_file="$CONF_DIR/siproxd-$sec.conf"
 105         local pid_file="$PID_DIR/siproxd-$sec.pid"
 106         local reg_file plugin_dir
 107
 108         setup_networks "$sec"
 109         apply_defaults "$sec"
 110
 111         config_get plugin_dir "$sec" plugindir
 112         config_get reg_file "$sec" registration_file
 113
 114         procd_open_instance "$sec"
 115         procd_set_param command "$PROG" --config "$conf_file"
 116         procd_set_param pidfile "$pid_file"
 117         procd_set_param respawn
 118         procd_add_jail siproxd log
 119         procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /dev/null
 120         procd_add_jail_mount "$conf_file"
 121         [ -d "$plugin_dir" ] && procd_add_jail_mount "$plugin_dir"
 122         # Ensure registration file exists for jail
 123         [ -f "$reg_file" ] || touch "$reg_file"
 124         chown "$SIPROXD_UID:$SIPROXD_GID" "$reg_file"
 125         procd_add_jail_mount_rw "$reg_file"
 126         procd_close_instance
 127 }
 128
 129 # Setup callbacks for parsing siproxd sections, options, and lists.
 130 # This avoids hardcoding all supported siproxd configuration parameters.
 131
 132 siproxd_cb() {
 133         config_cb() {
 134                 # Section change: close any previous section.
 135                 [ -n "$cur_sec" ] && section_end "$cur_sec"
 136
 137                 case "$1" in
 138                         # New 'siproxd' section: begin processing.
 139                         "siproxd")
 140                                 cur_sec="$2"
 141                                 section_start "$cur_sec"
 142                         ;;
 143                         # Config end or unknown section: ignore.
 144                         *)
 145                                 cur_sec=""
 146                         ;;
 147                 esac
 148         }
 149
 150         option_cb() {
 151                 local sec="$cur_sec"
 152
 153                 [ -z "$sec" ] && return
 154                 list_contains CONF_SKIP "$1" && return
 155                 [ -n "$2" ] && append_conf "$1" = "$2"
 156         }
 157
 158         list_cb() {
 159                 option_cb "$@"
 160         }
 161 }
 162
 163 service_triggers()
 164 {
 165         procd_add_reload_trigger "siproxd"
 166 }
 167
 168 start_service() {
 169         mkdir -p "$CONF_DIR" "$REG_DIR" "$PID_DIR"
 170         chmod 755 "$CONF_DIR" "$REG_DIR" "$PID_DIR"
 171         chown "$SIPROXD_UID:$SIPROXD_GID" "$REG_DIR"
 172
 173         . /lib/functions/network.sh
 174         siproxd_cb
 175         config_load 'siproxd'
 176 }