modules/luci-base/luasrc/model/ipkg.lua

   1 -- Copyright 2008-2011 Jo-Philipp Wich <jow@openwrt.org>
   2 -- Copyright 2008 Steven Barth <steven@midlink.org>
   3 -- Licensed to the public under the Apache License 2.0.
   4
   5 local os   = require "os"
   6 local io   = require "io"
   7 local fs   = require "nixio.fs"
   8 local util = require "luci.util"
   9
  10 local type  = type
  11 local pairs = pairs
  12 local error = error
  13 local table = table
  14
  15 local ipkg = "opkg --force-removal-of-dependent-packages --force-overwrite --nocase"
  16 local icfg = "/etc/opkg.conf"
  17
  18 module "luci.model.ipkg"
  19
  20
  21 -- Internal action function
  22 local function _action(cmd, ...)
  23         local pkg = ""
  24         for k, v in pairs({...}) do
  25                 pkg = pkg .. " '" .. v:gsub("'", "") .. "'"
  26         end
  27
  28         local c = "%s %s %s >/tmp/opkg.stdout 2>/tmp/opkg.stderr" %{ ipkg, cmd, pkg }
  29         local r = os.execute(c)
  30         local e = fs.readfile("/tmp/opkg.stderr")
  31         local o = fs.readfile("/tmp/opkg.stdout")
  32
  33         fs.unlink("/tmp/opkg.stderr")
  34         fs.unlink("/tmp/opkg.stdout")
  35
  36         return r, o or "", e or ""
  37 end
  38
  39 -- Internal parser function
  40 local function _parselist(rawdata)
  41         if type(rawdata) ~= "function" then
  42                 error("OPKG: Invalid rawdata given")
  43         end
  44
  45         local data = {}
  46         local c = {}
  47         local l = nil
  48
  49         for line in rawdata do
  50                 if line:sub(1, 1) ~= " " then
  51                         local key, val = line:match("(.-): ?(.*)%s*")
  52
  53                         if key and val then
  54                                 if key == "Package" then
  55                                         c = {Package = val}
  56                                         data[val] = c
  57                                 elseif key == "Status" then
  58                                         c.Status = {}
  59                                         for j in val:gmatch("([^ ]+)") do
  60                                                 c.Status[j] = true
  61                                         end
  62                                 else
  63                                         c[key] = val
  64                                 end
  65                                 l = key
  66                         end
  67                 else
  68                         -- Multi-line field
  69                         c[l] = c[l] .. "\n" .. line
  70                 end
  71         end
  72
  73         return data
  74 end
  75
  76 -- Internal lookup function
  77 local function _lookup(act, pkg)
  78         local cmd = ipkg .. " " .. act
  79         if pkg then
  80                 cmd = cmd .. " '" .. pkg:gsub("'", "") .. "'"
  81         end
  82
  83         -- OPKG sometimes kills the whole machine because it sucks
  84         -- Therefore we have to use a sucky approach too and use
  85         -- tmpfiles instead of directly reading the output
  86         local tmpfile = os.tmpname()
  87         os.execute(cmd .. (" >%s 2>/dev/null" % tmpfile))
  88
  89         local data = _parselist(io.lines(tmpfile))
  90         os.remove(tmpfile)
  91         return data
  92 end
  93
  94
  95 function info(pkg)
  96         return _lookup("info", pkg)
  97 end
  98
  99 function status(pkg)
 100         return _lookup("status", pkg)
 101 end
 102
 103 function install(...)
 104         return _action("install", ...)
 105 end
 106
 107 function installed(pkg)
 108         local p = status(pkg)[pkg]
 109         return (p and p.Status and p.Status.installed)
 110 end
 111
 112 function remove(...)
 113         return _action("remove", ...)
 114 end
 115
 116 function update()
 117         return _action("update")
 118 end
 119
 120 function upgrade()
 121         return _action("upgrade")
 122 end
 123
 124 -- List helper
 125 function _list(action, pat, cb)
 126         local fd = io.popen(ipkg .. " " .. action ..
 127                 (pat and (" '%s'" % pat:gsub("'", "")) or ""))
 128
 129         if fd then
 130                 local name, version, sz, desc
 131                 while true do
 132                         local line = fd:read("*l")
 133                         if not line then break end
 134
 135                         name, version, sz, desc = line:match("^(.-) %- (.-) %- (.-) %- (.+)")
 136
 137                         if not name then
 138                                 name, version, sz = line:match("^(.-) %- (.-) %- (.+)")
 139                                 desc = ""
 140                         end
 141
 142                         if #version > 26 then
 143                                 version = version:sub(1,21) .. ".." .. version:sub(-3,-1)
 144                         end
 145
 146                         cb(name, version, sz, desc)
 147
 148                         name    = nil
 149                         version = nil
 150                         sz      = nil
 151                         desc    = nil
 152                 end
 153
 154                 fd:close()
 155         end
 156 end
 157
 158 function list_all(pat, cb)
 159         _list("list --size", pat, cb)
 160 end
 161
 162 function list_installed(pat, cb)
 163         _list("list_installed --size", pat, cb)
 164 end
 165
 166 function find(pat, cb)
 167         _list("find --size", pat, cb)
 168 end
 169
 170
 171 function overlay_root()
 172         local od = "/"
 173         local fd = io.open(icfg, "r")
 174
 175         if fd then
 176                 local ln
 177
 178                 repeat
 179                         ln = fd:read("*l")
 180                         if ln and ln:match("^%s*option%s+overlay_root%s+") then
 181                                 od = ln:match("^%s*option%s+overlay_root%s+(%S+)")
 182
 183                                 local s = fs.stat(od)
 184                                 if not s or s.type ~= "dir" then
 185                                         od = "/"
 186                                 end
 187
 188                                 break
 189                         end
 190                 until not ln
 191
 192                 fd:close()
 193         end
 194
 195         return od
 196 end