First steps towards package update support (current+available versions can be requested).

opkg.conf

@@ -0,0 +1,6 @@
+#src/gz wifibox http://doodle3d.com/static/wifibox-packages
+src/gz wifibox http://192.168.5.2/~wouter/wifibox-packages
+dest root /
+dest ram /tmp
+lists_dir ext /var/opkg-lists
+option overlay_root /overlay

src/rest/api/api_info.lua

@@ -0,0 +1,19 @@
+local M = {
+	isApi = true
+}
+
+
+function M._global(request, response)
+	response:setSuccess()
+end
+
+function M.firmware(request, response)
+	--response:setSuccess()
+	-- can return (essentially all wraps ipkg output):
+	-- available (list)
+	-- current
+	-- latest
+	-- upgradable
+end
+
+return M

src/rest/api/api_system.lua

@@ -0,0 +1,52 @@
+local M = {
+	isApi = true
+}
+
+
+-- TODO: this function has been duplicated from test/test_wlanconfig.lua
+local function captureCommandOutput(cmd)
+	local f = assert(io.popen(cmd, 'r'))
+	local output = assert(f:read('*all'))
+	--TODO: test if this works to obtain the return code (http://stackoverflow.com/questions/7607384/getting-return-status-and-program-output)
+	--local rv = assert(f:close())
+	--return output,rv[3]
+	return output
+end
+
+function M._global(request, response)
+	response:setSuccess()
+end
+
+function M.fwversions(request, response)
+	local pkgName = 'wifibox'
+	local opkg = 'opkg -f /usr/share/lua/wifibox/opkg.conf'
+	local output, rv
+	
+	response:setSuccess()
+	
+	output = captureCommandOutput(opkg .. ' list-installed wifibox')
+	local version = output:match('^wifibox %- (.*)\n$')
+	response:addData('current', version)
+	
+	rv = os.execute(opkg .. ' update >/dev/null')
+	if rv == 0 then
+		output = captureCommandOutput(opkg .. ' list wifibox')
+		local versions = {}
+		for v in output:gmatch('wifibox %- (%d+\.%d+\.%d+%-%d+) %- ') do
+			versions[#versions+1] = v
+		end
+		response:addData('all_versions', versions)
+	else
+		response:setFail("could not fetch update list")
+	end
+end
+
+-- functie maken om mbv 'opkg compare-versions <v1> <op> <v2>' versies te vergelijken?
+-- of intern vergelijken? (uitsplitsen naar major/minor/patch/pkgrel)
+-- met comparefunctie (voor table.sort())
+ 
+-- TO UPGRADE to version x (e.g. 0.1.0-7) (met force-optie):
+-- 'opkg update'
+-- 'opkg upgrade wifibox' (state versions explicitly?)
+
+return M