curl to LUA

[KoBra]

Dear, as I am a novice in scripting. Anyone that can help me in reading out doorbell status to link to object in KNX?

Hik doorbell KV6113-WPE1 uses  a curl command:

Code:

curl -i --digest -u admin:xxx http://192.168.x.x/ISAPI/VideoIntercom/callStatus?format=json

Should give as output : “idle” , “ring” , “onCall”

during "ring" it must set a boolean to 1 All others 0.

[admin]

See this example: https://forum.logicmachine.net/showthrea...64#pid9364

[KoBra]

I found that one using the search function but this is about getting a snapshot not a datapoint. So i don't understand the link. Sorry i am really novice in scripting ;-)

[admin]

Copy the script for the example and change two last lines and log the result. Change 123456789 to your device password and change the IP address as needed.

Code:

url = 'http://admin:123456789@192.168.1.1/ISAPI/VideoIntercom/callStatus?format=json'
res, err, hdrs = request(url)

log(res, err, hdrs)

[KoBra]

Thx for the help.

I made a script from some copy pasting of other scripts i have running. But i don't get the different value.

The reply from the bell in the JSON is the following: 

Code:

{
    "CallStatus":    {
        "status":    "idle"
    }
}

But with the following script i get no value from the doorbell:

Code:

require('json')
require('socket.http')
data = socket.http.request('http://admin:xxxx@192.168.0.0/ISAPI/VideoIntercom/callStatus?format=json')
data = json.pdecode(data)

if type(data) == 'table' then
  data = data['CallStatus'][ 1 ]
  log(data)
  -- Status
grp.checkwrite('32/5/1', data.status)
 
else
  alert('request failed')
end

Sorry i am just not good at scripting (yet)

[admin]

Try this:

Code:

if type(data) == 'table' then
  status = data.CallStatus.status
  grp.checkwrite('32/5/1', status)
else
  alert('request failed')
end

[KoBra]

Tried it both as Resident or as Event based script but both don't write a value at the 32/5/1 address... "Request Failed". No idea where it goes wrong.

I tested the login with credential in Chrome on a incognito window. There it accepts the HTTP including the login credentials.

[admin]

It does not work because the standard HTTP library does not support digest authentication scheme. You need to use code from this example instead: https://forum.logicmachine.net/showthrea...64#pid9364

[KoBra]

It does not work because the standard HTTP library does not support digest authentication scheme. You need to use code from this example instead: https://forum.logicmachine.net/showthrea...64#pid9364

If i test with script below i get the same error...

Code:

local skthttp = require('socket.http')
local skturl = require('socket.url')
local ltn12 = require('ltn12')
local md5sum = require('encdec').md5

local hash = function(...)
  return md5sum(table.concat({...}, ':'))
end

local parse_header = function(header)
  local result = {}
  for key, value in (header .. ','):gmatch('(%w+)=(.-),') do
    if value:sub(1, 1) == '"' then -- strip quotes
      result[ key:lower() ] = value:sub(2, -2)
    else
      result[ key:lower() ] = value
    end
  end
  return result
end

local make_digest_header = function(headers)
  local digest = {}
  for _, header in ipairs(headers) do
    if not header.unquote then
      header[ 2 ] = '"' .. header[ 2 ] .. '"'
    end

    digest[ #digest + 1 ] = header[ 1 ] .. '=' .. header[ 2 ]
  end
  return 'Digest ' .. table.concat(digest, ', ')
end

local _request = function(req)
  if not req.url then
    return nil, 'missing url'
  end

  local url = skturl.parse(req.url)
  local user, password = url.user, url.password
  local sink = req.sink

  if not user or not password then
    return nil, 'missing credentials in url'
  end

  url.user, url.password, url.authority, url.userinfo = nil, nil, nil, nil
  req.url = skturl.build(url)
  local source
  if req.source then
    local chunks = {}
    local capture = function(chunk)
      if chunk then
        chunks[ #chunks + 1 ] = chunk
      end
      return chunk
    end
    local chunk_id = 0
    source = function()
      chunk_id = chunk_id + 1
      return chunks[ chunk_id ]
    end
    req.source = ltn12.source.chain(req.source, capture)
  end
  req.sink = nil
  local body, code, hdrs = skthttp.request(req)
  if code == 401 and hdrs['www-authenticate'] then
    local ht = parse_header(hdrs['www-authenticate'])
    if not ht.realm or not ht.nonce then
      return nil, 'missing realm/nonce from response'
    end
    local qop = ht.qop
    if qop and qop ~= 'auth' then
      return nil, 'unsupported qop ' .. tostring(qop)
    end
    if ht.algorithm and ht.algorithm:lower() ~= 'md5' then
      return nil, 'unsupported algo ' .. tostring(ht.algorithm)
    end
    local nc = '00000001'
    local cnonce = string.format('%08x', os.time())
    local uri = skturl.build({ path = url.path, query = url.query })
    local method = req.method or 'GET'
    local response = hash(
      hash(user, ht.realm, password),
      ht.nonce,
      nc,
      cnonce,
      'auth',
      hash(method, uri)
    )
    req.headers = req.headers or {}
    local auth = {
      { 'username', user },
      { 'realm', ht.realm },
      { 'nonce', ht.nonce },
      { 'uri', uri },
      { 'cnonce', cnonce },
      { 'nc', nc, unquote = true },
      { 'qop', 'auth' },
      { 'algorithm', 'MD5' },
      { 'response', response },
    }
    if ht.opaque then
      table.insert(auth, { 'opaque', ht.opaque })
    end
    req.headers.authorization = make_digest_header(auth)
    if not req.headers.cookie and hdrs['set-cookie'] then
      -- not really correct but enough for httpbin
      local cookie = (hdrs['set-cookie'] .. ';'):match('(.-=.-)[;,]')
      if cookie then
        req.headers.cookie = '$Version: 0; ' .. cookie .. ';'
      end
    end
    if req.source then
      req.source = source
    end
    req.sink = sink
    body, code, hdrs = skthttp.request(req)
  end

  return body, code, hdrs
end

local request = function(url)
  local t = type(url)
  if t == 'table' then
    return _request(table.clone(url))
  elseif t == 'string' then
    local req = {}
    local _, code, headers = _request({ url = url, sink = ltn12.sink.table(req) })
    return table.concat(req), code, headers
  end
end

url = 'http://admin:XXXX@192.168.0.1/ISAPI/VideoIntercom/callStatus?format=json'
image, err, hdrs = request(url)

require('json')
data = json.pdecode(data)

if type(data) == 'table' then
  status = data.CallStatus.status
  grp.checkwrite('32/5/1', data.CallStatus.status)
else
  alert('request failed doorbell')
end

[admin]

Line 136 should be:
data, err, hdrs = request(url)

Otherwise result is assigned to the image variable not data

[KoBra]

 Hoe could I be that stupid… tnx it works!

[Krstfr2k]

I am sorry to hijack the thread, but how would implement the following in the script example that is provided by Admin?

Code:

curl --location --request PUT 'https://exampleadr.com/pms_api/:subscription_id/:account_id/rooms/:room_id' \
--data-raw '{
    "room": {
        "housekeeping_status": "inspect"
    }
}'

[admin]

Use this, adjust URL (including id parameters) as needed:

Code:

http = require('socket.http')
json = require('json')

url = 'https://exampleadr.com/pms_api/:subscription_id/:account_id/rooms/:room_id'

body = json.encode({
  room = {
    housekeeping_status = 'inspect'
  }
})

res, code = http.request({
  url = url,
  method = 'PUT',
  body = body
})

log(res, code)

[Krstfr2k]

Use this, adjust URL (including id parameters) as needed:

Code:

http = require('socket.http')
json = require('json')

url = 'https://exampleadr.com/pms_api/:subscription_id/:account_id/rooms/:room_id'

body = json.encode({
  room = {
    housekeeping_status = 'inspect'
  }
})

res, code = http.request({
  url = url,
  method = 'PUT',
  body = body
})

log(res, code)

The API uses Digest Auth, would the example above work in that case or would the earlier example in this thread need to be adjusted?

[admin]

In this case you need to pass request source differently and also put username and password into the URL. Also don't forget to include digest library code before this.

Code:

json = require('json')

url = 'https://username:password@exampleadr.com/pms_api/:subscription_id/:account_id/rooms/:room_id'

body = json.encode({
  room = {
    housekeeping_status = 'inspect'
  }
})

resp = {}

res, code = request({
  url = url,
  method = 'PUT',
  headers = {
    ['Content-Type']  = 'application/json',
    ['Content-Length'] = #body,
  },
  source = ltn12.source.string(body),
  sink = ltn12.sink.table(resp),
})

print(res, code, resp)

[Krstfr2k]

In this case you need to pass request source differently and also put username and password into the URL. Also don't forget to include digest library code before this.

Code:

json = require('json')

url = 'https://username:password@exampleadr.com/pms_api/:subscription_id/:account_id/rooms/:room_id'

body = json.encode({
  room = {
    housekeeping_status = 'inspect'
  }
})

resp = {}

res, code = request({
  url = url,
  method = 'PUT',
  headers = {
    ['Content-Type']  = 'application/json',
    ['Content-Length'] = #body,
  },
  source = ltn12.source.string(body),
  sink = ltn12.sink.table(resp),
})

print(res, code, resp)

Thank you so much for the help, worked perfectly!

[cekca]

How i can send a command for open a door / Relay:

curl -i --digest -u admin:xxx -X PUT -d '<RemoteControlDoor><cmd>open</cmd></RemoteControlDoor>' http://192.168.0.xx/ISAPI/AccessControl/...rol/door/1

thank you

[admin]

You need to use digest auth request function from this example: https://forum.logicmachine.net/showthrea...64#pid9364

Code:

body = '<RemoteControlDoor><cmd>open</cmd></RemoteControlDoor>'
res, code = request({
  url = 'http://admin:123@IP/...',
  method = 'PUT',
  headers = {
    ['Content-Length'] = #body,
  },
  source = ltn12.source.string(body),
})
log(res, code)