--- /dev/null
+#!/usr/bin/lua
+
+local hasuci,uci = pcall(require,"uci")
+
+require("socket")
+json=require("json")
+
+function url_decode(str)
+ if not str then return nil end
+ str = string.gsub (str, "+", " ")
+ str = string.gsub (str, "%%(%x%x)", function(h) return
+ string.char(tonumber(h,16)) end)
+ str = string.gsub (str, "\r\n", "\n")
+ return str
+end
+
+function split(s, delimiter)
+ local result = {};
+ for match in (s..delimiter):gmatch("(.-)"..delimiter) do
+ result[#result+1] = match;
+ end
+ return result;
+end
+
+function string.starts(String,Start)
+ return string.sub(String,1,string.len(Start))==Start
+end
+
+function process_playlist(playlist)
+ local res={}
+ for _,record in pairs(playlist) do
+ local splitted = split(record,": ")
+ local name = splitted[2]
+ local splitted = split(splitted[1],":")
+ local id = splitted[1]
+ local rectype = splitted[2]
+ local rec = {}
+ if not (id == "OK") then
+ rec["id"] = id
+ rec["type"] = rectype
+ rec["name"] = name
+ res[id] = rec
+ end
+ end
+ return res
+end
+
+function process_playlists(playlists)
+ local res={}
+ for _,record in pairs(playlists) do
+ local splitted = split(record,": ")
+ if splitted[1]=="playlist" then
+ res[#res+1] = splitted[2]
+ end
+ end
+ return res
+end
+
+function process_directory(directory)
+ local res={}
+ for _,record in pairs(directory) do
+ local splitted = split(record,": ")
+ if splitted[1]=="directory" or splitted[1]=="file" then
+ local rec={}
+ rec["type"] = splitted[1]
+ rec["name"] = splitted[2]
+ res[#res+1] = rec
+ end
+ end
+ return res
+end
+
+function mpd_new(settings)
+ local client = {}
+ if settings == nil then settings = {} end
+
+ client.hostname = settings.hostname or "localhost"
+ client.port = settings.port or 6600
+ client.desc = settings.desc or client.hostname
+ client.password = settings.password
+ client.timeout = settings.timeout or 1
+ client.retry = settings.retry or 60
+
+ return client
+end
+
+function mpd_send(mpd,action,raw)
+
+ local command = string.format("%s\n", action)
+ local values = {}
+
+ -- connect to MPD server if not already done.
+ if not mpd.connected then
+ local now = os.time();
+ if not mpd.last_try or (now - mpd.last_try) > mpd.retry then
+ mpd.socket = socket.tcp()
+ mpd.socket:settimeout(mpd.timeout, 't')
+ mpd.last_try = os.time()
+ mpd.connected = mpd.socket:connect(mpd.hostname, mpd.port)
+ if not mpd.connected then
+ return { errormsg = "could not connect" }
+ end
+ mpd.last_error = nil
+
+ -- Read the server's hello message
+ local line = mpd.socket:receive("*l")
+ if not line:match("^OK MPD") then -- Invalid hello message?
+ mpd.connected = false
+ return { errormsg = string.format("invalid hello message: %s", line) }
+ else
+ _, _, mpd.version = string.find(line, "^OK MPD ([0-9.]+)")
+ end
+
+ -- send the password if needed
+ if mpd.password then
+ local rsp = mpd_send(mpd,string.format("password %s", mpd.password))
+ if rsp.errormsg then
+ return rsp
+ end
+ end
+ else
+ local retry_sec = mpd.retry - (now - mpd.last_try)
+ return { errormsg = string.format("%s (retrying in %d sec)", mpd.last_error, retry_sec) }
+ end
+ end
+
+ mpd.socket:send(command)
+
+ local line = ""; err=0
+ while not line:match("^OK$") do
+ line, err = mpd.socket:receive("*l")
+ if not line then -- closed,timeout (mpd killed?)
+ mpd.last_error = err
+ mpd.connected = false
+ mpd.socket:close()
+ return mpd_send(mpd,action)
+ end
+
+ if line:match("^ACK") then
+ return { errormsg = line }
+ end
+
+ if not raw then
+
+ local pattern = string.format("(%s)", ": ")
+ local i = string.find (line, pattern, 0)
+
+ if i ~= nil then
+ local key=string.sub(line,1,i-1)
+ local value=string.sub(line,i+2,-1)
+ values[string.lower(key)] = value
+ end
+
+ else
+
+ values[#values+1]=line
+
+ end
+ end
+
+ return values
+end
+
+if hasuci then
+
+ x = uci.cursor()
+
+ settings = {}
+ settings['host'] = x.get("mpd","server","host") or "localhost"
+ settings['port'] = x.get("mpd","server","port") or 6600
+ settings['timeout'] = x.get("mpd","server","timeout") or 1
+
+ volstep = x.get("mpd","control","volume_step") or 3
+
+ password = x.get("mpd","server","password")
+
+else
+
+ config = arg[1]
+ if not config then
+ config="/etc/mpd-lua.json"
+ end
+
+ settings={}
+ local open = io.open
+ local file = open(config, "r")
+ if file then
+ local content = file:read "*a"
+ file:close()
+ settings=json.decode(content)
+ end
+
+ settings['host'] = settings['host'] or "localhost"
+ settings['port'] = settings["port"] or 6600
+ settings['timeout'] = settings["timeout"] or 1
+
+ volstep = settings["volstep"] or 3
+
+end
+
+
+if password then
+ settings["password"] = password
+end
+
+m = mpd_new(settings)
+
+command = url_decode(os.getenv('QUERY_STRING'))
+
+if not command or command=="" then
+ command="idle"
+end
+
+if command=="play" or command=="pause" or command=="stop" then
+
+ res=mpd_send(m,command)
+
+elseif command=="previous" or command=="next" then
+
+ res=mpd_send(m,"play")
+ res=mpd_send(m,command)
+
+elseif command=="idle" then
+
+ m.timeout=30
+ res=mpd_send(m,command)
+
+elseif command=="vold" then
+
+ status=mpd_send(m,"status")
+ volume=tonumber(status["volume"])
+ res=mpd_send(m,"setvol "..(volume-volstep))
+
+elseif command=="volu" then
+
+ status=mpd_send(m,"status")
+ volume=tonumber(status["volume"])
+ res=mpd_send(m,"setvol "..(volume+volstep))
+
+elseif string.starts(command,"fastfwd") then
+
+ cmd=split(command,"|")
+ skip=tonumber(cmd[2])
+ if not skip then
+ skip=15
+ end
+
+ status=mpd_send(m,"status")
+ rec_time=status["time"]
+ song=status["song"]
+
+ if song then
+
+ if rec_time then
+ rec_time=split(rec_time,":")
+ cur_time=tonumber(rec_time[1])
+
+ track_time=tonumber(rec_time[2])
+ cur_time=cur_time+skip
+ if cur_time>track_time then
+ cur_time=track_time
+ end
+
+ mpd_send(m,"seek "..song.." "..cur_time)
+
+ else
+
+ mpd_send(m,"play")
+
+ end
+
+ end
+
+ res={}
+
+elseif string.starts(command,"rewind") then
+
+ cmd=split(command,"|")
+ skip=tonumber(cmd[2])
+ if not skip then
+ skip=15
+ end
+
+ status=mpd_send(m,"status")
+ rec_time=status["time"]
+ song=status["song"]
+
+ if song then
+
+ if rec_time then
+ rec_time=split(rec_time,":")
+ cur_time=tonumber(rec_time[1])
+
+ track_time=tonumber(rec_time[2])
+ cur_time=cur_time-skip
+ if cur_time<0 then
+ cur_time=0
+ end
+
+ mpd_send(m,"seek "..song.." "..cur_time)
+
+ else
+
+ mpd_send(m,"play")
+ mpd_send(m,"previous")
+
+ end
+
+ end
+
+ res={}
+
+elseif command=="status" then
+
+ res=mpd_send(m,"status")
+ song=res["song"]
+ playlist=mpd_send(m,"playlist",1)
+ pl=process_playlist(playlist)
+
+ if song then
+ res['current_playing']=pl[song]['name']
+ else
+ res['song']="--"
+ res['current_playing']="---"
+ end
+
+elseif command=="playlist" then
+
+ playlist=mpd_send(m,"playlist",1)
+ res=process_playlist(playlist)
+
+elseif command=="repeat" then
+
+ status=mpd_send(m,"status")
+ rep=1-status["repeat"]
+ res=mpd_send(m,"repeat "..rep)
+
+elseif string.starts(command,"cpl") then
+
+ cmd=split(command,"|")
+ id=cmd[3]
+ command=cmd[2]
+
+ if command=="playitem" then
+ command="play "..id
+ res=mpd_send(m,command)
+ end
+
+ if command=="clear" then
+ res=mpd_send(m,"clear")
+ end
+
+ if command=="remove" then
+ command="delete "..id
+ res=mpd_send(m,command)
+ end
+
+ if command=="moveup" then
+ command="swap "..id.." "..(id-1)
+ res=mpd_send(m,command)
+ end
+
+ if command=="movedown" then
+ command="swap "..id.." "..(id+1)
+ res=mpd_send(m,command)
+ end
+
+elseif string.starts(command,"lists") then
+
+ cmd=split(command,"|")
+ command=cmd[2]
+
+ if command=="load" then
+ if not cmd[3] then
+ lists=mpd_send(m,"listplaylists",1)
+ res=process_playlists(lists)
+ else
+ res=mpd_send(m,"load "..cmd[3],1)
+ end
+ end
+
+ if command=="save" and cmd[3] then
+ res=mpd_send(m,"save "..cmd[3],1)
+ end
+
+ if command=="delete" and cmd[3] then
+ res=mpd_send(m,"rm "..cmd[3],1)
+ end
+
+ if command=="edit" then
+ if cmd[3] then
+ dir=mpd_send(m,"lsinfo \""..cmd[3].."\"",1)
+ else
+ dir=mpd_send(m,"lsinfo",1)
+ end
+ res=process_directory(dir)
+ end
+
+ if command=="add" then
+ res={}
+ if cmd[3] then
+ res=mpd_send(m,"add \""..cmd[3].."\"")
+ end
+ end
+
+end
+
+if not res then
+ print("Content-Type: text/plain\r\n")
+ print("MPD server - unknown command "..command)
+elseif (res['error_msg']) then
+ print("Content-Type: text/plain\r\n")
+ print("MPD server connection error: "..res['error_msg'])
+else
+ print "Content-Type: text/plain\r\n"
+ print(json.encode(res))
+end
projects / mpd-lua.git / blobdiff