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 # Use user-friendly network names (e.g. "wan", "lan") from options
  43 # 'interface_inbound' and 'interface_outbound', but use standard siproxd
  44 # parameters 'if_inbound' and 'if_outbound' if explicitly set.
  45
  46 setup_networks() {
  47         local sec="$1"
  48         local _int_inbound _int_outbound
  49         local _dev_inbound _dev_outbound
  50
  51         config_get _int_inbound "$sec" interface_inbound
  52         config_get _int_outbound "$sec" interface_outbound
  53
  54         . /lib/functions/network.sh
  55         network_get_physdev _dev_inbound $_int_inbound
  56         network_get_physdev _dev_outbound $_int_outbound
  57
  58         default_conf if_inbound $_dev_inbound
  59         default_conf if_outbound $_dev_outbound
  60 }
  61
  62 # Apply default values to key options if unset in user's UCI config.
  63
  64 apply_defaults() {
  65         local sec="$1"
  66
  67         default_conf sip_listen_port 5060
  68         default_conf autosave_registrations 300
  69         default_conf rtp_port_low 7070
  70         default_conf rtp_port_high 7089
  71         default_conf rtp_timeout 300
  72         default_conf rtp_dscp 46
  73         default_conf tcp_timeout 600
  74         default_conf tcp_keepalive 20
  75         default_conf default_expires 600
  76         default_conf daemonize 0
  77         default_conf user "$SIPROXD_UID"
  78         default_conf registration_file "$REG_DIR/siproxd-$sec.reg"
  79         default_conf plugindir "$PLUGIN_DIR"
  80 }
  81
  82 # Handle activities at start of a new 'siproxd' section.
  83 # Initialize section processing and save section name.
  84
  85 section_start() {
  86         local sec="$1"
  87
  88         rm -f "$CONF_DIR/siproxd-$sec.conf"
  89         append_conf "# config auto-generated from /etc/config/siproxd"
  90 }
  91
  92 # Handle activities at close of a 'siproxd' section.
  93 # Parse OpenWRT interface names (e.g. "wan"), apply defaults and
  94 # set up procd jail.
  95
  96 section_end() {
  97         local sec="$1"
  98
  99         local conf_file="$CONF_DIR/siproxd-$sec.conf"
 100         local pid_file="$PID_DIR/siproxd-$sec.pid"
 101         local reg_file plugin_dir
 102
 103         setup_networks "$sec"
 104         apply_defaults "$sec"
 105
 106         config_get plugin_dir "$sec" plugindir
 107         config_get reg_file "$sec" registration_file
 108
 109         procd_open_instance "$sec"
 110         procd_set_param command "$PROG" --config "$conf_file"
 111         procd_set_param pidfile "$pid_file"
 112         procd_set_param respawn
 113         procd_add_jail siproxd log
 114         procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /dev/null
 115         procd_add_jail_mount "$conf_file"
 116         [ -d "$plugin_dir" ] && procd_add_jail_mount "$plugin_dir"
 117         # Ensure registration file exists for jail
 118         [ -f "$reg_file" ] || touch "$reg_file"
 119         chown "$SIPROXD_UID:$SIPROXD_GID" "$reg_file"
 120         procd_add_jail_mount_rw "$reg_file"
 121         procd_close_instance
 122 }
 123
 124 # Setup callbacks for parsing siproxd sections, options, and lists.
 125 # This avoids hardcoding all supported siproxd configuration parameters.
 126
 127 siproxd_cb() {
 128         config_cb() {
 129                 # Section change: close any previous section.
 130                 [ -n "$cur_sec" ] && section_end "$cur_sec"
 131
 132                 case "$1" in
 133                         # New 'siproxd' section: begin processing.
 134                         "siproxd")
 135                                 cur_sec="$2"
 136                                 section_start "$cur_sec"
 137                         ;;
 138                         # Config end or unknown section: ignore.
 139                         *)
 140                                 cur_sec=""
 141                         ;;
 142                 esac
 143         }
 144
 145         option_cb() {
 146                 local sec="$cur_sec"
 147
 148                 [ -z "$sec" ] && return
 149                 list_contains CONF_SKIP "$1" && return
 150                 [ -n "$2" ] && append_conf "$1" = "$2"
 151         }
 152
 153         list_cb() {
 154                 option_cb "$@"
 155         }
 156 }
 157
 158 service_triggers()
 159 {
 160         procd_add_reload_trigger "siproxd"
 161 }
 162
 163 start_service() {
 164         mkdir -p "$CONF_DIR" "$REG_DIR" "$PID_DIR"
 165         chmod 755 "$CONF_DIR" "$REG_DIR" "$PID_DIR"
 166         chown "$SIPROXD_UID:$SIPROXD_GID" "$REG_DIR"
 167
 168         siproxd_cb
 169         config_load 'siproxd'
 170 }