tSIP softphone: XML phonebook import

Desk phones from multiple manufacturers (Cisco, Yealink, ATCOM) are using remote XML phonebooks with identical format, example:

    <CiscoIPPhoneDirectory>
        <Title>Name Of Directory</Title>
        <Prompt>Prompt text.</Prompt>
        <DirectoryEntry>
            <Name>Name of Person or Company</Name>
            <Telephone>TelephoneNumber</Telephone>
        </DirectoryEntry>
        <DirectoryEntry>
            <Name>Name of Person or Company</Name>
            <Telephone>TelephoneNumber</Telephone>
        </DirectoryEntry>
    </CiscoIPPhoneDirectory>  
  

Import function for this XML was added in tSIP 0.1.74.4 as function in main menu and Lua ReadXmlContacts(xml_file) function.

Lua example fetching XML from server using curl was added to Script window:

    -- BASIC SETTINGS BLOCK
    	-- where is XML phonebook placed on the server?
    	local server_path = "http://tomeko.net/software/SIPclient/howto/phonebook.xml?token=ABCDEFGH"
    	-- how to authorize to server (optional, may be empty)
    	local server_auth = "--insecure --anyauth --user admin:password"
    -- END OF BASIC SETTINGS BLOCK
    
    function file_exists(name)
       local f=io.open(name,"r")
       if f~=nil then io.close(f) return true else return false end
    end
    
    -- let's use paths relative to exe location
    local filename = GetExeName()
    local index = string.find(filename:reverse(), "\")
    local dir = string.sub(filename, 1, -index)
    local curl_exe = dir .. "curl.exe"
    local xml_file = dir .. "phonebook.xml"
    
    if file_exists(curl_exe) == false then
    	ShowMessage("This script requires curl.exe placed next to application executable")
    	return
    end
    
    -- remove file from previous run before trying to download new one
    os.remove(xml_file)	
    
    local args = " -o " .. xml_file .. " " .. server_path .. " " .. server_auth
    print(string.format("curl args: [%s]\n", args))
    local ret = ShellExecute("open", curl_exe, args, nil, 0)
    print(string.format("curl ShellExecute return code: %d\n", ret))
    -- wait up to 5 seconds for download
    for i = 1, 10 do  -- Range includes both ends.
    	if file_exists(xml_file) then
    		break
    	end
    	if i == 10 then
    		ShowMessage("Failed to download XML phonebook\n")
    		print("Failed to download XML phonebook\n")
    		return
    	end
    	Sleep(500)
    end
    
    -- MessageBox with MB_YESNO and question icon
    local res = MessageBox("Are you sure to overwrite current phonebook?\r\nCurrent contact entries would be lost.",
    	"Overwrite phonebook?", 4+32)
    if res ~= 6 then
    	return
    end  
    
    local status = ReadXmlContacts(xml_file)
    if status == 0 then
    	print(string.format("Error %d reading XML contacts\n", status))
    else
    	print("XML contacts imported\n")
    end  
  

Note: XML import function overwrittes content of local phonebook completely.

tSIP uses ANSI code page - import function converts strings from UTF-8 to ANSI, but characters outside of ANSI set would not be converted - they would be visible as quotation marks.

Possible uses of script fetching phonebook include manual run (programmable button), "on startup" script and "on timer" script (e.g. using second timer with period set to 1 hour).

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