Send image form ip camera to telegram

[peyoe]

I have an IP camera working and I can view it trough my logic machine.
The next step I like to reach is to send the snapshot to my telegram.
I have already configured my telegram, I can send messages. But it's impossible to send a snapshot.
I have a DAHUA camera, and the url to view the snapshot is this:
Http: // user: password@cameraip/cgi-bin/snapshot.cgi
I can view it in chrome without problems.
I try to send it with "sendphoto" command and with the example from here, in this case send through email.
https://forum.logicmachine.net/showthread.php?tid=1061

I do not know what else to do. Can someone help me?
Thanks.

[admin]

First you need to retrieve the image using http request.
Then you can send the image using this example. filedata variable must contain image data as a string, change PUT_CHAT_ID_HERE and PUT_BOT_TOKEN_HERE placeholders

Code:

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require('ssl.https') boundary = os.date('%d%m%Y%H%M%S') filedata = '...' -- snapshot image data as a string params = {   {     name = 'chat_id',     value = 'PUT_CHAT_ID_HERE',   },   {     name = 'photo',     filename = 'snapshot.jpg',     ctype = 'image/jpeg',     value = filedata,   } } body = { '--' .. boundary } for _, param in ipairs(params) do   line = string.format('Content-Disposition: form-data; name=%q', param.name)   if param.filename then     line = string.format('%s; filename=%q', line, param.filename)   end   body[ #body + 1 ] = line   if param.ctype then     body[ #body + 1 ] = string.format('Content-Type: %s', param.ctype)   end   body[ #body + 1 ] = ''   body[ #body + 1 ] = param.value   body[ #body + 1 ] = '--' .. boundary end -- last boundary body[ #body ] = body[ #body ] .. '--' -- empty line at the end body[ #body + 1 ] = '' bodydata = table.concat(body, '\r\n') resp = {} log(   ssl.https.request({     url = 'https://api.telegram.org/PUT_BOT_TOKEN_HERE/sendPhoto',     sink = ltn12.sink.table(resp),     method = 'POST',     source = ltn12.source.string(bodydata),     headers = {       ['content-length'] = #bodydata,       ['content-type'] = 'multipart/form-data; boundary=' .. boundary     }   }) ) log(table.concat(resp))

[peyoe]

Thanks for the answer.
I put my url snapshot on "filedata" and my CHATID and BOT_TOKEN, but it doesn't work.
The log says:


* arg: 1
* number: 1
* arg: 2
* number: 400
* arg: 3
* table:
["server"]
* string: nginx/1.16.1
["access-control-expose-headers"]
* string: Content-Length,Content-Type,Date,Server,Connection
["content-type"]
* string: application/json
["connection"]
* string: close
["content-length"]
* string: 79
["date"]
* string: Thu, 13 Aug 2020 15:18:09 GMT
["strict-transport-security"]
* string: max-age=31536000; includeSubDomains; preload
["access-control-allow-origin"]
* string: *
* arg: 4
* string: HTTP/1.1 400 Bad Request


* string: {"ok":false,"error_code":400,"description":"Bad Request: IMAGE_PROCESS_FAILED"}

[admin]

As mentioned before first you need to retrieve the image from your camera via http request. You cannot pass a url to the snapshot here because telegram server cannot access your camera.

[peyoe]

Ok.
As you can see I'm a completely noob with LUA.
I will search info about that.

Thanks again.

[peyoe]

Hello.

I have tried to retrieve the image with no results.
I have used these examples:


https://forum.logicmachine.net/showthrea...tp+request

https://forum.logicmachine.net/showthrea...64#pid9364

Can you explain me how I need to do this?
Thanks in advance.

[admin]

Log what you get when sending a request to the camera. Make sure that the URL is correct and it actually returns an image not a HTML page containing the image.

Code:

12

require('socket.http') log(socket.http.request('http://user:password@cameraip/cgi-bin/snapshot.cgi'))

[peyoe]

Log what you get when sending a request to the camera. Make sure that the URL is correct and it actually returns an image not a HTML page containing the image.

Code:

12

require('socket.http') log(socket.http.request('http://user:password@cameraip/cgi-bin/snapshot.cgi'))

Sure:

* arg: 1
  * string:
* arg: 2
  * number: 401
* arg: 3
  * table:
  ["content-length"]
    * string: 0
  ["www-authenticate"]
    * string: Digest realm="Login to 5L02EC8PAGC1BC0", qop="auth", nonce="762101674", opaque="e65481894c6ae41a2f1296db7e53d66882f66471"
  ["connection"]
    * string: close
* arg: 4
  * string: HTTP/1.1 401 Unauthorized

[admin]

This means that you need to use digest code example from here: https://forum.logicmachine.net/showthrea...64#pid9364
log what you get from the request:

Code:

123

url = 'http://user:password@cameraip/cgi-bin/snapshot.cgi' image, err, hdrs = request(url) log(image, err, hdrs)

[peyoe]

This means that you need to use digest code example from here: https://forum.logicmachine.net/showthrea...64#pid9364
log what you get from the request:

Code:

123

url = 'http://user:password@cameraip/cgi-bin/snapshot.cgi' image, err, hdrs = request(url) log(image, err, hdrs)

With the last code I have not had any records, instead that I had an error:

User script:21: attempt to call global 'request' (a nil value)
stack traceback:
User script:21: in main chunk

[admin]

You need to copy the whole code from here: https://forum.logicmachine.net/showthrea...64#pid9364
And change the last lines as in my previous post.

[peyoe]

You need to copy the whole code from here: https://forum.logicmachine.net/showthrea...64#pid9364
And change the last lines as in my previous post.

Ok, sorry. This is the log:

Code:

12

* arg: 1   * string: ����

[peyoe]

EDIT
It's working, I have to put on filedata, the name without ' '.

Thanks admin.

This is my whole code:

Code:

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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   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   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     if ht.qop ~= 'auth' then       return nil, 'unsupported qop ' .. tostring(ht.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     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://USER:PASS@CAM IP/cgi-bin/snapshot.cgi?1&ts=123/snapshot.jpeg' image, err, hdrs = request(url) log(image, err, hdrs) require('ssl.https') boundary = os.date('%d%m%Y%H%M%S') filedata = image -- snapshot image data as a string params = {   {     name = 'chat_id',     value = 'MY CHAT ID',   },   {     name = 'photo',     filename = 'snapshot.jpg',     ctype = 'image/jpeg',     value = filedata,   } } body = { '--' .. boundary } for _, param in ipairs(params) do   line = string.format('Content-Disposition: form-data; name=%q', param.name)   if param.filename then     line = string.format('%s; filename=%q', line, param.filename)   end   body[ #body + 1 ] = line   if param.ctype then     body[ #body + 1 ] = string.format('Content-Type: %s', param.ctype)   end   body[ #body + 1 ] = ''   body[ #body + 1 ] = param.value   body[ #body + 1 ] = '--' .. boundary end -- last boundary body[ #body ] = body[ #body ] .. '--' -- empty line at the end body[ #body + 1 ] = '' bodydata = table.concat(body, '\r\n') resp = {} log(   ssl.https.request({     url = 'https://api.telegram.org/MY BOT/sendPhoto',     sink = ltn12.sink.table(resp),     method = 'POST',     source = ltn12.source.string(bodydata),     headers = {       ['content-length'] = #bodydata,       ['content-type'] = 'multipart/form-data; boundary=' .. boundary     }   }) ) log(table.concat(resp))

[admin]

This line is incorrect:

Code:

1

filedata = 'image'

It should be

Code:

1

filedata = image

[peyoe]

This line is incorrect:

Code:

1

filedata = 'image'

It should be

Code:

1

filedata = image

Yes, I just put it in my previous post. Thank you very much again.