add reSIProcate (SIP proxy and TURN server) package

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I've packaged the reSIProcate SIP stack (shared library), repro proxy
and reTurn, the ICE/STUN/TURN server.  Please find the Makefile and
related artifacts attached

Benefits to OpenWRT:

This provides a comprehensive platform for true federated VoIP from
OpenWRT, thanks to the following:
- - repro has a built-in web interface and no database dependency, so it
highly suitable for a router
- - repro provides strong mutual TLS authentication
- - reTurn provides robust and efficient NAT traversal for RTP streams

Dependencies:

This depends on my previous patches today, for building the C++
support for db47, and also adding libasio package

Testing:

I've tested the binaries on a TP-Link TL-WR1043ND with 32MB RAM and
8MB flash.  This seems to be the bare minimum amount of flash for the
combination of reSIProcate + openssl + libdb + other dependencies
http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd

More info on reSIProcate:

  http://www.resiprocate.org/

and a quick start HowTo guide for federated VoIP with reSIProcte:

  http://www.opentelecoms.org/federated-voip-quick-start-howto
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net/resiprocate/Makefile

@@ -0,0 +1,108 @@
+#
+# Copyright (C) 2012 OpenWrt.org
+# Copyright (C) 2012 Daniel Pocock <daniel@pocock.com.au>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=resiprocate
+PKG_VERSION:=1.8.5
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/resiprocate-$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://www.resiprocate.org/files/pub/reSIProcate/releases/
+PKG_MD5SUM:=70754747edf22cfd752a39eb81f0d2a1
+
+PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+PKG_BUILD_DEPENDS:=+libasio
+
+include $(INCLUDE_DIR)/package.mk
+
+#TARGET_CFLAGS += $(FPIC)
+TARGET_LDFLAGS += -lcrypto
+
+define Package/resiprocate/Default
+  SECTION:=net
+  CATEGORY:=Network
+  SUBMENU:=Telephony
+  DEFAULT:=m
+  TITLE:=reSIProcate
+  URL:=http://www.resiprocate.org/
+  DEPENDS:=+libopenssl +libdb47 +libcares +boost +libstdcpp
+endef
+
+define Package/libresiprocate
+$(call Package/resiprocate/Default)
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE+= libraries
+endef
+
+define Package/repro
+$(call Package/resiprocate/Default)
+  TITLE+= repro SIP proxy
+  DEPENDS+= +libresiprocate
+endef
+
+define Package/resiprocate-turn-server
+$(call Package/resiprocate/Default)
+  TITLE+= repro TURN server (reTurn)
+  DEPENDS+= +libresiprocate
+endef
+
+define Package/resiprocate/description
+ SIP stack, proxy, ICE/STUN/TURN implementation
+endef
+
+define Package/repro/conffiles
+/etc/repro/repro.config
+endef
+
+define Package/resiprocate-turn-server/conffiles
+/etc/reTurnServer.config
+endef
+
+define Build/Configure
+	$(call Build/Configure/Default, --enable-shared --disable-static --with-ssl --with-c-ares )
+endef
+
+define Build/Compile
+        $(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR)
+endef
+
+define Package/libresiprocate/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/librutil*.so* $(1)/usr/lib/
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libresip*.so* $(1)/usr/lib/
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libdum*.so* $(1)/usr/lib/
+endef
+
+define Package/repro/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/repro/repro $(1)/usr/sbin/
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/librepro*.so* $(1)/usr/lib/
+	$(INSTALL_DIR) $(1)/etc/repro/ssl
+	$(INSTALL_CONF) ./files/repro.config $(1)/etc/repro/
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/repro.init $(1)/etc/init.d/repro
+endef
+
+define Package/resiprocate-turn-server/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/reTurn/reTurnServer $(1)/usr/sbin/
+	$(INSTALL_CONF) ./files/reTurnServer.config $(1)/etc/
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/reTurnServer.init $(1)/etc/init.d/reTurnServer
+endef
+
+$(eval $(call BuildPackage,libresiprocate))
+$(eval $(call BuildPackage,repro))
+$(eval $(call BuildPackage,resiprocate-turn-server))
+
+

net/resiprocate/files/reTurnServer.config

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+TurnPort = 3478
+TlsTurnPort = 5349
+AltStunPort = 0
+TurnAddress = 0.0.0.0
+AltStunAddress = 0.0.0.0
+AuthenticationMode = 2
+AuthenticationRealm = reTurn
+NonceLifetime = 3600
+AllocationPortRangeMin = 49152
+AllocationPortRangeMax = 65535
+DefaultAllocationLifetime = 600
+MaxAllocationLifetime = 3600
+MaxAllocationsPerUser = 0
+TlsServerCertificateFilename = server.pem
+TlsTempDhFilename = dh512.pem
+# leave blank if key is not encrypted
+#TlsPrivateKeyPassword =
+# Logging Type: syslog|cerr|cout|file
+LoggingType = syslog
+# Logging level: NONE|CRIT|ERR|WARNING|INFO|DEBUG|STACK
+LoggingLevel = INFO
+LogFilename = reTurnServer.log
+LogFileMaxLines = 50000
+# It is highly recommended that these values are NOT left at their
+# default setting
+LongTermAuthUsername = test
+LongTermAuthPassword = 1234
+# Must be true or false, default = false, not supported on Windows
+Daemonize = true
+# On UNIX it is normal to create a PID file
+# if unspecified, no attempt will be made to create a PID file
+#PidFile = /var/run/reTurnServer/reTurnServer.pid
+

net/resiprocate/files/reTurnServer.init

@@ -0,0 +1,20 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2012 Daniel Pocock <daniel@pocock.com.au>
+
+START=80
+STOP=20
+
+SERVICE_USE_PID=1
+
+start() {
+	group_exists return 123 || group_add return 123
+        user_exists return 123 || user_add return 123 123 return /var/lib/return
+        mkdir -p /var/lib/return
+        chown -R return:return /var/lib/return
+        service_start /usr/sbin/reTurnServer --Daemonize=true --LoggingType=syslog --PidFile=/var/run/reTurnServer.pid
+}
+
+stop() {
+	service_stop /usr/sbin/reTurnServer
+}
+