Rework LuCI build system

 * Rename subdirectories to their repective OpenWrt package names
 * Make each LuCI module its own standalone package
 * Deploy a shared luci.mk which is used by each module Makefile

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 837 insertions, 0 deletions

diff --git a/applications/luci-app-pbx/root/etc/init.d/pbx-asterisk b/applications/luci-app-pbx/root/etc/init.d/pbx-asterisk
new file mode 100755
index 0000000000..e05ae11cd6
--- /dev/null
+++ b/applications/luci-app-pbx/root/etc/init.d/pbx-asterisk
@@ -0,0 +1,837 @@
+#!/bin/sh /etc/rc.common
+#
+# Copyright 2011 Iordan Iordanov <iiordanov (AT) gmail.com>
+#
+#    This file is part of luci-pbx.
+#
+#    luci-pbx is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    luci-pbx is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with luci-pbx.  If not, see <http://www.gnu.org/licenses/>.
+
+. /lib/functions.sh
+
+START=60
+
+# Some global variables
+MODULENAME=pbx
+USERAGENT="PBX"
+HANGUPCNTXT=hangup-call-context
+GTALKUNVL=unavailable
+
+ASTUSER=nobody
+ASTGROUP=nogroup
+ASTDIRSRECURSIVE="/var/run/asterisk /var/log/asterisk /var/spool/asterisk"
+ASTDIRS="/usr/lib/asterisk"
+ASTSOUNDSDIR="/usr/lib/asterisk/sounds"
+
+TEMPLATEDIR=/etc/${MODULENAME}-asterisk
+PBXSOUNDSDIR=$TEMPLATEDIR/sounds
+VMTEMPLATEDIR=/etc/${MODULENAME}-voicemail
+VMSOUNDSDIR=$VMTEMPLATEDIR/sounds
+ASTERISKDIR=/etc/asterisk
+WORKDIR=/tmp/$MODULENAME.$$
+MD5SUMSFILE=/tmp/$MODULENAME-sums.$$
+
+TMPL_ASTERISK=$TEMPLATEDIR/asterisk.conf.TEMPLATE
+TMPL_GTALK=$TEMPLATEDIR/gtalk.conf.TEMPLATE
+TMPL_INDICATIONS=$TEMPLATEDIR/indications.conf.TEMPLATE
+TMPL_LOGGER=$TEMPLATEDIR/logger.conf.TEMPLATE
+TMPL_MANAGER=$TEMPLATEDIR/manager.conf.TEMPLATE
+TMPL_MODULES=$TEMPLATEDIR/modules.conf.TEMPLATE
+TMPL_RTP=$TEMPLATEDIR/rtp.conf.TEMPLATE
+
+TMPL_EXTCTHRUCHECKHDR=$TEMPLATEDIR/extensions_disa-check_header.conf.TEMPLATE
+TMPL_EXTCTHRUCHECK=$TEMPLATEDIR/extensions_disa-check.conf.TEMPLATE
+TMPL_EXTCTHRUCHECKFTR=$TEMPLATEDIR/extensions_disa-check_footer.conf.TEMPLATE
+TMPL_EXTCTHRUHDR=$TEMPLATEDIR/extensions_disa_header.conf.TEMPLATE
+TMPL_EXTCTHRU=$TEMPLATEDIR/extensions_disa.conf.TEMPLATE
+TMPL_EXTCTHRUNOPIN=$TEMPLATEDIR/extensions_disa-nopin.conf.TEMPLATE
+
+TMPL_EXTCBACKCHECKHDR=$TEMPLATEDIR/extensions_callback-check_header.conf.TEMPLATE
+TMPL_EXTCBACKCHECK=$TEMPLATEDIR/extensions_callback-check.conf.TEMPLATE
+TMPL_EXTCBACKCHECKFTR=$TEMPLATEDIR/extensions_callback-check_footer.conf.TEMPLATE
+TMPL_EXTCBACKHDR=$TEMPLATEDIR/extensions_callback_header.conf.TEMPLATE
+TMPL_EXTCBACKSIP=$TEMPLATEDIR/extensions_callback_sip.conf.TEMPLATE
+TMPL_EXTCBACKGTALK=$TEMPLATEDIR/extensions_callback_gtalk.conf.TEMPLATE
+
+TMPL_EXTENSIONS=$TEMPLATEDIR/extensions.conf.TEMPLATE
+
+TMPL_EXTVMDISABLED=$TEMPLATEDIR/extensions_voicemail_disabled.conf.TEMPLATE
+TMPL_EXTVMENABLED=$TEMPLATEDIR/extensions_voicemail_enabled.conf.TEMPLATE
+
+TMPL_EXTBLKLIST=$TEMPLATEDIR/extensions_blacklist.conf.TEMPLATE
+TMPL_EXTBLKLISTFTR=$TEMPLATEDIR/extensions_blacklist_footer.conf.TEMPLATE
+TMPL_EXTBLKLISTHDR=$TEMPLATEDIR/extensions_blacklist_header.conf.TEMPLATE
+
+TMPL_EXTDEFAULT=$TEMPLATEDIR/extensions_default.conf.TEMPLATE
+TMPL_EXTDEFAULTUSER=$TEMPLATEDIR/extensions_default_user.conf.TEMPLATE
+
+TMPL_EXTINCNTXTSIP=$TEMPLATEDIR/extensions_incoming_context_sip.conf.TEMPLATE
+TMPL_EXTINCNTXTGTALKHDR=$TEMPLATEDIR/extensions_incoming_context_gtalk_header.conf.TEMPLATE
+TMPL_EXTINCNTXTGTALK=$TEMPLATEDIR/extensions_incoming_context_gtalk.conf.TEMPLATE
+
+TMPL_EXTUSERCNTXT=$TEMPLATEDIR/extensions_user_context.conf.TEMPLATE
+TMPL_EXTUSERCNTXTFTR=$TEMPLATEDIR/extensions_user_context_footer.conf.TEMPLATE
+TMPL_EXTUSERCNTXTHDR=$TEMPLATEDIR/extensions_user_context_header.conf.TEMPLATE
+
+TMPL_EXTOUTHDR=$TEMPLATEDIR/extensions_default_outgoing_header.conf.TEMPLATE
+TMPL_EXTOUTGTALK=$TEMPLATEDIR/extensions_outgoing_gtalk.conf.TEMPLATE
+TMPL_EXTOUTLOCAL=$TEMPLATEDIR/extensions_outgoing_dial_local_user.conf.TEMPLATE
+TMPL_EXTOUTSIP=$TEMPLATEDIR/extensions_outgoing_sip.conf.TEMPLATE
+
+TMPL_JABBER=$TEMPLATEDIR/jabber.conf.TEMPLATE
+TMPL_JABBERUSER=$TEMPLATEDIR/jabber_users.conf.TEMPLATE
+TMPL_SIP=$TEMPLATEDIR/sip.conf.TEMPLATE
+TMPL_SIPPEER=$TEMPLATEDIR/sip_peer.TEMPLATE
+TMPL_SIPREG=$TEMPLATEDIR/sip_registration.TEMPLATE
+TMPL_SIPUSR=$TEMPLATEDIR/sip_user.TEMPLATE
+
+TMPL_MSMTPDEFAULT=$VMTEMPLATEDIR/pbx-msmtprc-defaults.TEMPLATE
+TMPL_MSMTPACCOUNT=$VMTEMPLATEDIR/pbx-msmtprc-account.TEMPLATE
+TMPL_MSMTPAUTH=$VMTEMPLATEDIR/pbx-msmtprc-account-auth.TEMPLATE
+TMPL_MSMTPACCTDFLT=$VMTEMPLATEDIR/pbx-msmtprc-account-default.TEMPLATE
+
+
+INCLUDED_FILES="$WORKDIR/extensions_blacklist.conf $WORKDIR/extensions_callthrough.conf\
+                $WORKDIR/extensions_incoming.conf  $WORKDIR/extensions_incoming_gtalk.conf\
+                $WORKDIR/extensions_user.conf      $WORKDIR/jabber_users.conf\
+                $WORKDIR/sip_peers.conf            $WORKDIR/sip_registrations.conf\
+                $WORKDIR/sip_users.conf            $WORKDIR/extensions_voicemail.conf\
+                $WORKDIR/extensions_default.conf"
+
+
+# In this string, we concatenate all local users enabled to receive calls
+# readily formatted for the Dial command.
+localusers_to_ring=""
+
+# In this string, we keep a list of all users that are enabled for outgoing
+# calls. It is used at the end to create the user contexts.
+localusers_can_dial=""
+
+# In this string, we put together a space-separated list of provider names
+# (alphanumeric, with all non-alpha characters replaced with underscores),
+# which will be used to dial out by default (whose outgoing contexts will
+# be included in users' contexts by default.
+outbound_providers=""
+sip_outbound_providers=""
+gtalk_outbound_providers=""
+
+# Function which escapes non-alpha-numeric characters in a string
+escape_non_alpha() {
+    echo $@ | sed 's/\([^a-zA-Z0-9]\)/\\\1/g'
+}
+
+# Function which replaces non-alpha-numeric characters with an underscore
+sub_underscore_for_non_alpha() {
+    echo $@ | sed 's/[^a-zA-Z0-9]/_/g'
+}
+
+# Copies the template files which we don't edit.
+copy_unedited_templates_over()
+{
+    cp $TMPL_ASTERISK      $WORKDIR/asterisk.conf
+    cp $TMPL_GTALK         $WORKDIR/gtalk.conf
+    cp $TMPL_INDICATIONS   $WORKDIR/indications.conf
+    cp $TMPL_LOGGER        $WORKDIR/logger.conf
+    cp $TMPL_MANAGER       $WORKDIR/manager.conf
+    cp $TMPL_MODULES       $WORKDIR/modules.conf
+    # If this file isn't present at this stage, voicemail is disabled.
+    [ ! -f $WORKDIR/extensions_voicemail.conf ] && \
+      cp $TMPL_EXTVMDISABLED $WORKDIR/extensions_voicemail.conf
+}
+
+# Touches all the included files, to prevent asterisk from refusing to
+# start if a config item is missing and an included config file isn't created.
+create_included_files()
+{
+    touch $INCLUDED_FILES
+}
+
+# Puts together all the extensions.conf related configuration.
+pbx_create_extensions_config()
+{
+    local ringtime
+    config_get ringtime advanced ringtime
+
+    sed "s/|RINGTIME|/$ringtime/" $TMPL_EXTENSIONS > $WORKDIR/extensions.conf
+    mv  $WORKDIR/inext.TMP                           $WORKDIR/extensions_incoming.conf
+    cp  $TMPL_EXTINCNTXTGTALKHDR                     $WORKDIR/extensions_incoming_gtalk.conf
+    cat $WORKDIR/outextgtalk.TMP                  >> $WORKDIR/extensions_incoming_gtalk.conf 2>/dev/null
+    rm -f $WORKDIR/outextgtalk.TMP
+    mv  $WORKDIR/blacklist.TMP                       $WORKDIR/extensions_blacklist.conf
+    mv  $WORKDIR/userext.TMP                         $WORKDIR/extensions_user.conf
+
+    cp  $TMPL_EXTCTHRUHDR                            $WORKDIR/extensions_callthrough.conf
+    cat $WORKDIR/callthrough.TMP                  >> $WORKDIR/extensions_callthrough.conf 2>/dev/null
+    rm -f $WORKDIR/callthrough.TMP
+    cat $TMPL_EXTCTHRUCHECKHDR                    >> $WORKDIR/extensions_callthrough.conf 2>/dev/null
+    cat $WORKDIR/callthroughcheck.TMP             >> $WORKDIR/extensions_callthrough.conf 2>/dev/null
+    rm -f $WORKDIR/callthroughcheck.TMP
+    cat $TMPL_EXTCTHRUCHECKFTR                    >> $WORKDIR/extensions_callthrough.conf 2>/dev/null
+
+    cp  $TMPL_EXTCBACKHDR                            $WORKDIR/extensions_callback.conf
+    cat $WORKDIR/callback.TMP                     >> $WORKDIR/extensions_callback.conf 2>/dev/null
+    rm -f $WORKDIR/callback.TMP
+    cat $TMPL_EXTCBACKCHECKHDR                    >> $WORKDIR/extensions_callback.conf 2>/dev/null
+    cat $WORKDIR/callbackcheck.TMP                >> $WORKDIR/extensions_callback.conf 2>/dev/null
+    rm -f $WORKDIR/callbackcheck.TMP
+    cat $TMPL_EXTCBACKCHECKFTR                    >> $WORKDIR/extensions_callback.conf 2>/dev/null
+
+    rm -f $WORKDIR/outext-*.TMP
+    rm -f $WORKDIR/localext.TMP
+    sed "s/|LOCALUSERS|/$localusers_to_ring/g" $TMPL_EXTDEFAULT \
+                                                   > $WORKDIR/extensions_default.conf
+    cat $WORKDIR/inextuser.TMP                    >> $WORKDIR/extensions_default.conf
+    rm -f $WORKDIR/inextuser.TMP
+}
+
+# Puts together all the sip.conf related configuration.
+pbx_create_sip_config()
+{
+    mv $WORKDIR/sip_regs.TMP    $WORKDIR/sip_registrations.conf
+    mv $WORKDIR/sip_peers.TMP   $WORKDIR/sip_peers.conf
+    mv $WORKDIR/sip_users.TMP   $WORKDIR/sip_users.conf
+}
+
+# Creates the jabber.conf related config
+pbx_create_jabber_config()
+{
+    cp  $TMPL_JABBER        $WORKDIR/jabber.conf
+    mv  $WORKDIR/jabber.TMP $WORKDIR/jabber_users.conf
+}
+
+# Gets rid of any config files from $ASTERISKDIR not found in $WORKDIR.
+clean_up_asterisk_config_dir()
+{
+    for f in $ASTERISKDIR/* ; do
+        basef="`basename $f`"
+        if [ ! -e "$WORKDIR/$basef" ] ; then
+            rm -rf "$f"
+        fi
+    done
+}
+
+# Compares md5sums of the config files in $WORKDIR to those
+# in $ASTERISKDIR, and copies only changed files over to reduce
+# wear on flash in embedded devices.
+compare_configs_and_copy_changed()
+{
+    # First, compute md5sums of the config files in $WORKDIR.
+    cd $WORKDIR/
+    md5sum * > $MD5SUMSFILE
+
+    # Now, check the files in $ASTERISKDIR against the md5sums.
+    cd $ASTERISKDIR/
+    changed_files="`md5sum -c $MD5SUMSFILE 2>/dev/null | fgrep ": FAILED" | awk -F: '{print $1}'`"
+
+    rm -f $MD5SUMSFILE
+
+    [ -z "$changed_files" ] && return
+
+    # Now copy over the changed files.
+    for f in $changed_files ; do
+        cp "$WORKDIR/$f" "$ASTERISKDIR/$f"
+    done
+}
+
+# Calls the functions that create the final config files
+# Calls the function which compares which files have changed
+# Puts the final touches on $ASTERISKDIR
+# Gets rid of $WORKDIR
+pbx_assemble_and_copy_config()
+{
+    mkdir -p $ASTERISKDIR
+
+    copy_unedited_templates_over
+    create_included_files
+    pbx_create_extensions_config
+    pbx_create_sip_config
+    pbx_create_jabber_config
+
+    touch    $WORKDIR/features.conf
+
+    # At this point, $WORKDIR should contain a complete, working config.
+    clean_up_asterisk_config_dir
+
+    compare_configs_and_copy_changed
+
+    [ ! -d $ASTERISKDIR/manager.d ] && mkdir -p $ASTERISKDIR/manager.d/
+
+    # Get rid of the working directory
+    rm -rf $WORKDIR/
+}
+
+# Creates configuration for a user and adds it to the temporary file that holds
+# all users configured so far.
+pbx_add_user()
+{
+    local fullname
+    local defaultuser
+    local rawdefaultuser
+    local secret
+    local ring
+    local can_call
+
+    config_get fullname    $1 fullname
+    fullname=`escape_non_alpha $fullname`
+    config_get rawdefaultuser $1 defaultuser
+    defaultuser=`escape_non_alpha $rawdefaultuser`
+    config_get secret      $1 secret
+    secret=`escape_non_alpha $secret`
+    config_get ring        $1 ring
+    config_get can_call    $1 can_call
+
+    [ -z "$defaultuser" -o -z "$secret" ] && return
+    [ -z "$fullname" ] && fullname="$defaultuser"
+
+    sed "s/|DEFAULTUSER|/$defaultuser/g" $TMPL_SIPUSR > $WORKDIR/sip_user.tmp
+
+    if [ "$can_call" = "yes" ] ; then
+        # Add user to list of all users that are allowed to make calls.
+        localusers_can_dial="$localusers_can_dial $rawdefaultuser"
+        sed -i "s/|CONTEXTNAME|/$defaultuser/g"     $WORKDIR/sip_user.tmp
+    else
+        sed -i "s/|CONTEXTNAME|/$HANGUPCNTXT/g"     $WORKDIR/sip_user.tmp
+    fi
+
+    # Add this user's configuration to the temp file containing all user configs.
+    sed "s/|FULLNAME|/$fullname/" $WORKDIR/sip_user.tmp |\
+             sed "s/|SECRET|/$secret/g"                       >> $WORKDIR/sip_users.TMP
+
+    if [ "$ring" = "yes" ] ; then
+        if [ -z "$localusers_to_ring" ] ; then
+            localusers_to_ring="SIP\/$defaultuser"
+        else
+            localusers_to_ring="$localusers_to_ring\&SIP\/$defaultuser"
+        fi
+    fi
+
+    # Add configuration which allows local users to call each other.
+    sed "s/|DEFAULTUSER|/$defaultuser/g" $TMPL_EXTOUTLOCAL    >> $WORKDIR/localext.TMP
+
+    # Add configuration which puts calls to users through the default
+    # context, so that blacklists and voicemail take effect for this user.
+    sed "s/|DEFAULTUSER|/$defaultuser/g" $TMPL_EXTDEFAULTUSER >> $WORKDIR/inextuser.TMP
+
+    rm -f $WORKDIR/sip_user.tmp
+}
+
+# Creates configuration for a Google account, and adds it to the temporary file that holds
+# all accounts configured so far.
+# Also creates the outgoing extensions which are used in users' outgoing contexts.
+pbx_add_jabber()
+{
+    local username
+    local secret
+    local numprefix
+    local register
+    local make_outgoing_calls
+    local name
+    local users_to_ring
+    local status
+    local statusmessage
+
+    config_get username $1 username
+    username=`escape_non_alpha $username`
+    config_get secret $1 secret
+    secret=`escape_non_alpha $secret`
+    #TODO: Is this really necessary here? Numprefix is retrieved below.
+    config_get numprefix $1 numprefix
+    config_get register $1 register
+    config_get make_outgoing_calls $1 make_outgoing_calls
+    config_get name $1 name
+    config_get status $1 status
+    status=`escape_non_alpha $status`
+    config_get statusmessage $1 statusmessage
+    statusmessage=`escape_non_alpha $statusmessage`
+
+    [ -z "$username" -o -z "$secret" ] && return
+
+    # Construct a jabber entry for this provider.
+    sed     "s/|USERNAME|/$username/g" $TMPL_JABBERUSER |\
+            sed "s/|NAME|/$name/g"                            > $WORKDIR/jabber.tmp
+
+    if [ "$register" = yes ] ; then
+        # If this provider is enabled for incoming calls, we need to set the
+        # status of the user to something other than unavailable in order to receive calls.
+        sed -i "s/|STATUS|/$status/g"                   $WORKDIR/jabber.tmp
+        sed -i "s/|STATUSMESSAGE|/\"$statusmessage\"/g" $WORKDIR/jabber.tmp
+
+        users_to_ring="`uci -q get ${MODULENAME}-calls.incoming_calls.$name`"
+        # If no users have been specified to ring, we ring all users enabled for incoming calls.
+        if [ -z "$users_to_ring" ] ; then
+            users_to_ring=$localusers_to_ring
+        else
+            # Else, we cook up a string formatted for the Dial command
+            # with the specified users (SIP/user1&SIP/user2&...). We do it
+            # with set, shift and a loop in order to be more tolerant of ugly whitespace
+            # messes entered by users.
+            set $users_to_ring
+            users_to_ring="SIP\/$1" && shift
+            for u in $@ ; do u=`escape_non_alpha $u` ; users_to_ring=$users_to_ring\\\&SIP\\\/$u ; done
+        fi
+
+        # Now, we add this account to the gtalk incoming context.
+        sed    "s/|USERNAME|/$username/g" $TMPL_EXTINCNTXTGTALK |\
+                   sed "s/|LOCALUSERS|/$users_to_ring/g"    >> $WORKDIR/outextgtalk.TMP
+    else
+        sed -i "s/|STATUS|/$GTALKUNVL/g"               $WORKDIR/jabber.tmp
+        sed -i "s/|STATUSMESSAGE|/\"\"/g"              $WORKDIR/jabber.tmp
+    fi
+
+    # Add this account's configuration to the temp file containing all account configs.
+    sed "s/|SECRET|/$secret/g" $WORKDIR/jabber.tmp      >> $WORKDIR/jabber.TMP
+
+    # If this provider is enabled for outgoing calls.
+    if [ "$make_outgoing_calls" = "yes" ] ; then
+
+        numprefix="`uci -q get ${MODULENAME}-calls.outgoing_calls.$name`"
+
+        # If no prefixes are specified, then we use "X" which matches any prefix.
+        [ -z "$numprefix" ]  && numprefix="X"
+
+        for p in $numprefix ; do
+            p=`escape_non_alpha $p`
+            sed "s/|NUMPREFIX|/$p/g" $TMPL_EXTOUTGTALK |\
+                            sed "s/|NAME|/$name/g"            >> $WORKDIR/outext-$name.TMP
+        done
+
+        # Add this provider to the list of enabled outbound providers.
+        if [ -z "$outbound_providers" ] ; then
+            outbound_providers="$name"
+        else
+            outbound_providers="$outbound_providers $name"
+        fi
+
+        # Add this provider to the list of enabled gtalk outbound providers.
+        if [ -z "$gtalk_outbound_providers" ] ; then
+            gtalk_outbound_providers="$name"
+        else
+            gtalk_outbound_providers="$gtalk_outbound_providers $name"
+        fi
+    fi
+
+    rm -f $WORKDIR/jabber.tmp
+}
+
+# Creates configuration for a SIP provider account, and adds it to the temporary file that holds
+# all accounts configured so far.
+# Also creates the outgoing extensions which are used in users' outgoing contexts.
+pbx_add_peer()
+{
+    local defaultuser
+    local secret
+    local host
+    local fromdomain
+    local register
+    local numprefix
+    local make_outgoing_calls
+    local name
+    local users_to_ring
+    local port
+    local outboundproxy
+
+    config_get defaultuser $1 defaultuser
+    defaultuser=`escape_non_alpha $defaultuser`
+    config_get secret $1 secret
+    secret=`escape_non_alpha $secret`
+    config_get host $1 host
+    host=`escape_non_alpha $host`
+    config_get port $1 port
+    config_get outbountproxy $1 outboundproxy
+    outbountproxy=`escape_non_alpha $outbountproxy`
+    config_get fromdomain $1 fromdomain
+    fromdomain=`escape_non_alpha $fromdomain`
+    config_get register $1 register
+    config_get numprefix $1 numprefix
+    config_get make_outgoing_calls $1 make_outgoing_calls
+    config_get name $1 name
+
+    [ -z "$defaultuser" -o -z "$secret" -o -z "$host" ] && return
+    [ -z "$fromdomain" ]    && fromdomain=$host
+    [ -n "$port" ]          && port="port=$port"
+    [ -n "$outboundproxy" ] && outboundproxy="outboundproxy=$outboundproxy"
+
+    # Construct a sip peer entry for this provider.
+    sed    "s/|DEFAULTUSER|/$defaultuser/" $TMPL_SIPPEER  >  $WORKDIR/sip_peer.tmp
+    sed -i "s/|NAME|/$name/"                                 $WORKDIR/sip_peer.tmp
+    sed -i "s/|FROMUSER|/$defaultuser/"                      $WORKDIR/sip_peer.tmp
+    sed -i "s/|SECRET|/$secret/"                             $WORKDIR/sip_peer.tmp
+    sed -i "s/|HOST|/$host/"                                 $WORKDIR/sip_peer.tmp
+    sed -i "s/|PORT|/$port/"                                 $WORKDIR/sip_peer.tmp
+    sed -i "s/|OUTBOUNDPROXY|/$outboundproxy/"               $WORKDIR/sip_peer.tmp
+    # Add this account's configuration to the temp file containing all account configs.
+    sed    "s/|FROMDOMAIN|/$host/" $WORKDIR/sip_peer.tmp >>  $WORKDIR/sip_peers.TMP
+
+    # If this provider is enabled for incoming calls.
+    if [ "$register" = "yes" ] ; then
+        # Then we create a registration string for this provider.
+        sed    "s/|DEFAULTUSER|/$defaultuser/g" $TMPL_SIPREG         > $WORKDIR/sip_reg.tmp
+        sed -i "s/|SECRET|/$secret/g"                                  $WORKDIR/sip_reg.tmp
+        sed    "s/|NAME|/$name/g" $WORKDIR/sip_reg.tmp              >> $WORKDIR/sip_regs.TMP
+
+        users_to_ring="`uci -q get ${MODULENAME}-calls.incoming_calls.$name`"
+        # If no users have been specified to ring, we ring all users enabled for incoming calls.
+        if [ -z "$users_to_ring" ] ; then
+            users_to_ring=$localusers_to_ring
+        else
+            # Else, we cook up a string formatted for the Dial command
+            # with the specified users (SIP/user1&SIP/user2&...). We do it
+            # with set, shift and a loop in order to be more tolerant of ugly whitespace
+            # messes entered by users.
+            set $users_to_ring
+            users_to_ring="SIP\/$1" && shift
+            for u in $@ ; do users_to_ring=$users_to_ring\\\&SIP\\\/$u ; done
+        fi
+
+        # And we create an incoming calls context for this provider.
+        sed    "s/|NAME|/$name/g"                          $TMPL_EXTINCNTXTSIP |\
+                    sed "s/|LOCALUSERS|/$users_to_ring/g"       >> $WORKDIR/inext.TMP
+    fi
+
+    # If this provider is enabled for outgoing calls.
+    if [ "$make_outgoing_calls" = "yes" ] ; then
+
+        numprefix="`uci -q get ${MODULENAME}-calls.outgoing_calls.$name`"
+        # If no prefixes are specified, then we use "X" which matches any prefix.
+        [ -z "$numprefix" ]  && numprefix="X"
+        for p in $numprefix ; do
+            p=`escape_non_alpha $p`
+            sed "s/|NUMPREFIX|/$p/g" $TMPL_EXTOUTSIP |\
+                            sed "s/|NAME|/$name/g"              >> $WORKDIR/outext-$name.TMP
+        done
+
+        # Add this provider to the list of enabled outbound providers.
+        if [ -z "$outbound_providers" ] ; then
+            outbound_providers="$name"
+        else
+            outbound_providers="$outbound_providers $name"
+        fi
+
+        # Add this provider to the list of enabled sip outbound providers.
+        if [ -z "$sip_outbound_providers" ] ; then
+            sip_outbound_providers="$name"
+        else
+            sip_outbound_providers="$sip_outbound_providers $name"
+        fi
+    fi
+
+    rm -f $WORKDIR/sip_peer.tmp
+    rm -f $WORKDIR/sip_reg.tmp
+}
+
+# For all local users enabled for outbound calls, creates a context
+# containing the extensions for Google and SIP accounts this user is
+# allowed to use.
+pbx_create_user_contexts()
+{
+    local providers
+
+    for u in $localusers_can_dial ; do
+        u=`escape_non_alpha $u`
+        sed "s/|DEFAULTUSER|/$u/g" $TMPL_EXTUSERCNTXTHDR                >> $WORKDIR/userext.TMP
+        cat $WORKDIR/localext.TMP                                       >> $WORKDIR/userext.TMP
+        providers="`uci -q get ${MODULENAME}-calls.providers_user_can_use.$u`"
+        [ -z "$providers" ] && providers="$outbound_providers"
+
+        # For each provider, cat the contents of outext-$name.TMP into the user's outgoing calls extension
+        for p in $providers ; do
+            [ -f $WORKDIR/outext-$p.TMP ] && cat $WORKDIR/outext-$p.TMP >> $WORKDIR/userext.TMP
+        done
+        cat $TMPL_EXTUSERCNTXTFTR                                       >> $WORKDIR/userext.TMP
+    done
+}
+
+# Creates the blacklist context which hangs up on blacklisted numbers.
+pbx_add_blacklist()
+{
+    local blacklist1
+    local blacklist2
+
+    config_get blacklist1 blacklisting blacklist1
+    config_get blacklist2 blacklisting blacklist2
+
+    # We create the blacklist context no matter whether the blacklist
+    # actually contains entries or not, since the PBX will send calls
+    # to the context for a check against the list anyway.
+    cp $TMPL_EXTBLKLISTHDR                                   $WORKDIR/blacklist.TMP
+    for n in $blacklist1 $blacklist2 ; do
+        n=`escape_non_alpha $n`
+        sed "s/|BLACKLISTITEM|/$n/g" $TMPL_EXTBLKLIST >> $WORKDIR/blacklist.TMP 
+    done
+    cat $TMPL_EXTBLKLISTFTR                               >> $WORKDIR/blacklist.TMP
+}
+
+# Creates the callthrough context which allows specified numbers to get
+# into the PBX and dial out as the configured user.
+pbx_add_callthrough()
+{
+    local callthrough_number_list
+    local defaultuser
+    local pin
+    local enabled
+    local F
+
+    config_get callthrough_number_list $1 callthrough_number_list
+    config_get defaultuser $1 defaultuser
+    defaultuser=`escape_non_alpha $defaultuser`
+    config_get pin $1 pin
+    pin=`escape_non_alpha $pin`
+    config_get enabled $1 enabled
+
+    [ "$enabled" = "no" ]   && return
+    [ "$defaultuser" = "" ] && return
+
+    for callthrough_number in $callthrough_number_list ; do
+        sed "s/|NUMBER|/$callthrough_number/g" $TMPL_EXTCTHRUCHECK >> $WORKDIR/callthroughcheck.TMP
+
+	if [ -n "$pin" ] ; then F=$TMPL_EXTCTHRU ; else F=$TMPL_EXTCTHRUNOPIN ; fi
+        sed "s/|NUMBER|/$callthrough_number/g" $F             |\
+                    sed "s/|DEFAULTUSER|/$defaultuser/"       |\
+                        sed "s/|PIN|/$pin/"                        >> $WORKDIR/callthrough.TMP
+    done
+}
+
+
+# Creates the callback context which allows specified numbers to get
+# a callback into the PBX and dial out as the configured user.
+pbx_add_callback()
+{
+    local callback_number_list
+    local defaultuser
+    local pin
+    local enabled
+    local callback_provider
+    local callback_hangup_delay
+    local FB
+    local FT
+
+    config_get callback_number_list $1 callback_number_list
+    config_get defaultuser $1 defaultuser
+    defaultuser=`escape_non_alpha $defaultuser`
+    config_get pin $1 pin
+    pin=`escape_non_alpha $pin`
+    config_get enabled $1 enabled
+    config_get callback_provider $1 callback_provider
+    callback_provider=`sub_underscore_for_non_alpha $callback_provider`
+    config_get callback_hangup_delay $1 callback_hangup_delay
+
+    [ "$enabled" = "no" ]   && return
+    [ "$defaultuser" = "" ] && return
+
+    # If the provider is a SIP provider, set the file to use to $TMPL_EXTCBACKSIP
+    # otherwise, set it to $TMPL_EXTCBACKGTALK
+    if echo $sip_outbound_providers | grep -q $callback_provider 2>/dev/null
+    then
+        FB=$TMPL_EXTCBACKSIP
+    else
+        FB=$TMPL_EXTCBACKGTALK
+    fi
+
+    for callback_number in $callback_number_list ; do
+        sed "s/|NUMBER|/$callback_number/g" $TMPL_EXTCBACKCHECK    >> $WORKDIR/callbackcheck.TMP
+
+        sed "s/|NUMBER|/$callback_number/g" $FB            |\
+            sed "s/|CALLBACKPROVIDER|/$callback_provider/" |\
+                sed "s/|CALLBACKHUPDELAY|/$callback_hangup_delay/" >> $WORKDIR/callback.TMP
+
+        # Perhaps a bit confusingly, we create "callthrough" configuration for callback
+        # numbers, because we use the same DISA construct as for callthrough.
+        if [ -n "$pin" ] ; then FT=$TMPL_EXTCTHRU ; else FT=$TMPL_EXTCTHRUNOPIN ; fi
+        sed "s/|NUMBER|/$callback_number/g" $FT            |\
+            sed "s/|DEFAULTUSER|/$defaultuser/"            |\
+                sed "s/|PIN|/$pin/"                                >> $WORKDIR/callthrough.TMP
+    done
+}
+
+
+# Creates sip.conf from its template.
+pbx_cook_sip_template()
+{
+    local useragent
+    local externhost
+    local bindport
+
+    config_get useragent advanced useragent
+    useragent=`escape_non_alpha $useragent`
+    config_get externhost advanced externhost
+    config_get bindport advanced bindport
+
+    [ -z "$useragent" ] && useragent="$USERAGENT"
+
+    sed "s/|USERAGENT|/$useragent/g" $TMPL_SIP  > $WORKDIR/sip.conf
+
+    if [ -z "$externhost" ] ; then
+        sed -i "s/externhost=|EXTERNHOST|//g" $WORKDIR/sip.conf
+    else
+        sed -i "s/|EXTERNHOST|/$externhost/g" $WORKDIR/sip.conf
+    fi
+
+    if [ -z "$bindport" ] ; then
+        sed -i "s/bindport=|BINDPORT|//g"     $WORKDIR/sip.conf
+    else
+        sed -i "s/|BINDPORT|/$bindport/g"     $WORKDIR/sip.conf
+    fi
+
+
+}
+
+# Creates rtp.conf from its template.
+pbx_cook_rtp_template()
+{
+    local rtpstart
+    local rtpend
+
+    config_get rtpstart advanced rtpstart
+    config_get rtpend   advanced rtpend
+
+    sed "s/|RTPSTART|/$rtpstart/" $TMPL_RTP |\
+            sed "s/|RTPEND|/$rtpend/"               > $WORKDIR/rtp.conf
+}
+
+# Links any sound files found in $PBXSOUNDSDIR and $VMSOUNDSDIR
+# into $ASTSOUNDSDIR for use by Asterisk. Does not overwrite files.
+pbx_link_sounds()
+{
+    mkdir -p $ASTSOUNDSDIR
+
+    for dir in $PBXSOUNDSDIR $VMSOUNDSDIR ; do
+        if [ -d $dir ] ; then
+            for f in $dir/* ; do
+                ln -s $f $ASTSOUNDSDIR 2>/dev/null
+            done
+        fi
+    done
+}
+
+
+# Makes sure the ownership of specified directories is proper.
+pbx_fix_ownership()
+{
+    chown $ASTUSER:$ASTGROUP    $ASTDIRS
+    chown $ASTUSER:$ASTGROUP -R $ASTDIRSRECURSIVE
+}
+
+
+# Creates voicemail config if installed and enabled.
+pbx_configure_voicemail()
+{
+    local enabled
+    local global_timeout
+    local global_email_addresses
+
+    local smtp_tls
+    local smtp_server
+    local smtp_port
+    local smtp_auth
+    local smtp_user
+    local smtp_password
+
+    config_get enabled global_voicemail enabled
+
+    # First check if voicemail is enabled.
+    [ "$enabled" != "yes" ] && return
+
+    config_get global_timeout         global_voicemail global_timeout
+    #config_get global_email_addresses global_voicemail global_email_addresses
+    config_get smtp_auth              voicemail_smtp   smtp_auth
+    config_get smtp_tls               voicemail_smtp   smtp_tls
+    config_get smtp_server            voicemail_smtp   smtp_server
+    config_get smtp_port              voicemail_smtp   smtp_port
+    config_get smtp_user              voicemail_smtp   smtp_user
+    smtp_user=`escape_non_alpha $smtp_user`
+    config_get smtp_password          voicemail_smtp   smtp_password
+    smtp_password=`escape_non_alpha $smtp_password`
+
+    sed "s/|AUTH|/$smtp_auth/"   $TMPL_MSMTPDEFAULT |\
+             sed "s/|TLS|/$smtp_tls/"               >  $WORKDIR/pbx-msmtprc
+
+    sed "s/|HOST|/$smtp_server/" $TMPL_MSMTPACCOUNT |\
+             sed "s/|PORT|/$smtp_port/"             >> $WORKDIR/pbx-msmtprc
+
+    if [ "$smtp_auth" = "on" ] ; then
+        sed "s/|USER|/$smtp_user/"  $TMPL_MSMTPAUTH |\
+             sed "s/|PASSWORD|/$smtp_password/"     >> $WORKDIR/pbx-msmtprc
+    fi
+
+    cat $TMPL_MSMTPACCTDFLT                         >> $WORKDIR/pbx-msmtprc
+
+    [ ! -f /etc/pbx-msmtprc ] && cp $WORKDIR/pbx-msmtprc /etc/pbx-msmtprc
+    cmp -s  $WORKDIR/pbx-msmtprc /etc/pbx-msmtprc 1>/dev/null \
+                                || mv $WORKDIR/pbx-msmtprc /etc/pbx-msmtprc
+    chmod 600                                              /etc/pbx-msmtprc
+    chown nobody                                           /etc/pbx-msmtprc
+
+    # Copy over the extensions file which has voicemail enabled.
+    cp $TMPL_EXTVMENABLED                $WORKDIR/extensions_voicemail.conf
+
+    # Create the voicemail directory in /tmp
+    mkdir -p     /tmp/voicemail
+    chown nobody /tmp/voicemail
+
+    # Create the recordings directory
+    mkdir -p     /etc/pbx-voicemail/recordings
+    chown nobody /etc/pbx-voicemail/recordings
+
+    # Working around a bug in OpenWRT 12.09-rc1
+    # TODO: REMOVE AS SOON AS POSSIBLE
+    chmod ugo+w /tmp
+}
+
+
+start() {
+    mkdir -p $WORKDIR
+
+    # Create the users.
+    config_load ${MODULENAME}-users
+    config_foreach pbx_add_user local_user
+
+    # Create configuration for each google account.
+    config_unset
+    config_load ${MODULENAME}-google
+    config_foreach pbx_add_jabber gtalk_jabber
+
+    # Create configuration for each voip provider.
+    config_unset
+    config_load ${MODULENAME}-voip
+    config_foreach pbx_add_peer voip_provider
+
+    # Create the user contexts, callthroug/back, and phone blacklist.
+    config_unset
+    config_load ${MODULENAME}-calls
+    pbx_create_user_contexts
+    pbx_add_blacklist
+    config_foreach pbx_add_callthrough callthrough_numbers
+    config_foreach pbx_add_callback callback_numbers
+
+    # Prepare sip.conf using settings from the "advanced" section.
+    config_unset
+    config_load ${MODULENAME}-advanced
+    pbx_cook_sip_template
+    pbx_cook_rtp_template
+
+    # Prepare voicemail config.
+    config_unset
+    config_load ${MODULENAME}-voicemail
+    pbx_configure_voicemail
+
+    # Assemble the configuration, and copy changed files over.
+    config_unset
+    config_load ${MODULENAME}-advanced
+    pbx_assemble_and_copy_config
+
+    # Link sound files
+    pbx_link_sounds
+
+    # Enforce ownership of specified files and directories.
+    pbx_fix_ownership
+}