1 files changed, 239 insertions, 0 deletions
diff --git a/modules/luci-base/luasrc/model/ipkg.lua b/modules/luci-base/luasrc/model/ipkg.lua
new file mode 100644
index 000000000..c927e7116
--- /dev/null
+++ b/modules/luci-base/luasrc/model/ipkg.lua
@@ -0,0 +1,239 @@
+--[[
+LuCI - Lua Configuration Interface
+
+(c) 2008-2011 Jo-Philipp Wich <xm@subsignal.org>
+(c) 2008 Steven Barth <steven@midlink.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+]]--
+
+local os   = require "os"
+local io   = require "io"
+local fs   = require "nixio.fs"
+local util = require "luci.util"
+
+local type  = type
+local pairs = pairs
+local error = error
+local table = table
+
+local ipkg = "opkg --force-removal-of-dependent-packages --force-overwrite --nocase"
+local icfg = "/etc/opkg.conf"
+
+--- LuCI OPKG call abstraction library
+module "luci.model.ipkg"
+
+
+-- Internal action function
+local function _action(cmd, ...)
+	local pkg = ""
+	for k, v in pairs({...}) do
+		pkg = pkg .. " '" .. v:gsub("'", "") .. "'"
+	end
+
+	local c = "%s %s %s >/tmp/opkg.stdout 2>/tmp/opkg.stderr" %{ ipkg, cmd, pkg }
+	local r = os.execute(c)
+	local e = fs.readfile("/tmp/opkg.stderr")
+	local o = fs.readfile("/tmp/opkg.stdout")
+
+	fs.unlink("/tmp/opkg.stderr")
+	fs.unlink("/tmp/opkg.stdout")
+
+	return r, o or "", e or ""
+end
+
+-- Internal parser function
+local function _parselist(rawdata)
+	if type(rawdata) ~= "function" then
+		error("OPKG: Invalid rawdata given")
+	end
+
+	local data = {}
+	local c = {}
+	local l = nil
+
+	for line in rawdata do
+		if line:sub(1, 1) ~= " " then
+			local key, val = line:match("(.-): ?(.*)%s*")
+
+			if key and val then
+				if key == "Package" then
+					c = {Package = val}
+					data[val] = c
+				elseif key == "Status" then
+					c.Status = {}
+					for j in val:gmatch("([^ ]+)") do
+						c.Status[j] = true
+					end
+				else
+					c[key] = val
+				end
+				l = key
+			end
+		else
+			-- Multi-line field
+			c[l] = c[l] .. "\n" .. line
+		end
+	end
+
+	return data
+end
+
+-- Internal lookup function
+local function _lookup(act, pkg)
+	local cmd = ipkg .. " " .. act
+	if pkg then
+		cmd = cmd .. " '" .. pkg:gsub("'", "") .. "'"
+	end
+
+	-- OPKG sometimes kills the whole machine because it sucks
+	-- Therefore we have to use a sucky approach too and use
+	-- tmpfiles instead of directly reading the output
+	local tmpfile = os.tmpname()
+	os.execute(cmd .. (" >%s 2>/dev/null" % tmpfile))
+
+	local data = _parselist(io.lines(tmpfile))
+	os.remove(tmpfile)
+	return data
+end
+
+
+--- Return information about installed and available packages.
+-- @param pkg Limit output to a (set of) packages
+-- @return Table containing package information
+function info(pkg)
+	return _lookup("info", pkg)
+end
+
+--- Return the package status of one or more packages.
+-- @param pkg Limit output to a (set of) packages
+-- @return Table containing package status information
+function status(pkg)
+	return _lookup("status", pkg)
+end
+
+--- Install one or more packages.
+-- @param ... List of packages to install
+-- @return Boolean indicating the status of the action
+-- @return OPKG return code, STDOUT and STDERR
+function install(...)
+	return _action("install", ...)
+end
+
+--- Determine whether a given package is installed.
+-- @param pkg Package
+-- @return Boolean
+function installed(pkg)
+	local p = status(pkg)[pkg]
+	return (p and p.Status and p.Status.installed)
+end
+
+--- Remove one or more packages.
+-- @param ... List of packages to install
+-- @return Boolean indicating the status of the action
+-- @return OPKG return code, STDOUT and STDERR
+function remove(...)
+	return _action("remove", ...)
+end
+
+--- Update package lists.
+-- @return Boolean indicating the status of the action
+-- @return OPKG return code, STDOUT and STDERR
+function update()
+	return _action("update")
+end
+
+--- Upgrades all installed packages.
+-- @return Boolean indicating the status of the action
+-- @return OPKG return code, STDOUT and STDERR
+function upgrade()
+	return _action("upgrade")
+end
+
+-- List helper
+function _list(action, pat, cb)
+	local fd = io.popen(ipkg .. " " .. action ..
+		(pat and (" '%s'" % pat:gsub("'", "")) or ""))
+
+	if fd then
+		local name, version, desc
+		while true do
+			local line = fd:read("*l")
+			if not line then break end
+
+			name, version, desc = line:match("^(.-) %- (.-) %- (.+)")
+
+			if not name then
+				name, version = line:match("^(.-) %- (.+)")
+				desc = ""
+			end
+
+			cb(name, version, desc)
+
+			name    = nil
+			version = nil
+			desc    = nil
+		end
+
+		fd:close()
+	end
+end
+
+--- List all packages known to opkg.
+-- @param pat	Only find packages matching this pattern, nil lists all packages
+-- @param cb	Callback function invoked for each package, receives name, version and description as arguments
+-- @return	nothing
+function list_all(pat, cb)
+	_list("list", pat, cb)
+end
+
+--- List installed packages.
+-- @param pat	Only find packages matching this pattern, nil lists all packages
+-- @param cb	Callback function invoked for each package, receives name, version and description as arguments
+-- @return	nothing
+function list_installed(pat, cb)
+	_list("list_installed", pat, cb)
+end
+
+--- Find packages that match the given pattern.
+-- @param pat	Find packages whose names or descriptions match this pattern, nil results in zero results
+-- @param cb	Callback function invoked for each patckage, receives name, version and description as arguments
+-- @return	nothing
+function find(pat, cb)
+	_list("find", pat, cb)
+end
+
+
+--- Determines the overlay root used by opkg.
+-- @return		String containing the directory path of the overlay root.
+function overlay_root()
+	local od = "/"
+	local fd = io.open(icfg, "r")
+
+	if fd then
+		local ln
+
+		repeat
+			ln = fd:read("*l")
+			if ln and ln:match("^%s*option%s+overlay_root%s+") then
+				od = ln:match("^%s*option%s+overlay_root%s+(%S+)")
+
+				local s = fs.stat(od)
+				if not s or s.type ~= "dir" then
+					od = "/"
+				end
+
+				break
+			end
+		until not ln
+
+		fd:close()
+	end
+
+	return od
+end