Lua - FlashAir card CONFIG file gets damaged - macos

Question

I am using Toshiba FlashAir card to wirelessly upload photos from my drone to my web server via Lua script installed on FlashAir card. The card works fine most of the time, but sometimes the photos doesn't upload. When I connect to the card via my mac, I get this message, "CONFIG" is damaged and can't be opened.
Not sure why this is happening. The ftpUpload.lua script that does the uploading is listed below:
require("Settings")
local blackList = {}
local dateTable = {}
local parseThreads = 0
local ftpstring = "ftp://"..user..":"..passwd.."#"..server.."/"..serverDir.."/"
local lockdir = "/uploaded/" -- trailing slash required, and folder must already exist
local fileTable = {}
--Options
local sortByFileName = false -- If true sorts alphabetically by file else sorts by modified date
local jpegsOnly = true --Excludes .RAW files if set to true
local function exists(path)
if lfs.attributes(path) then
return true
else
return false
end
end
local function is_uploaded(path)
local hash = fa.hash("md5", path, "")
return exists(lockdir .. hash)
end
local function set_uploaded(path)
local hash = fa.hash("md5", path, "")
local file = io.open(lockdir .. hash, "w")
file:close()
end
local function delete(path)
-- Both of the following methods cause the next photo to be lost / not stored.
fa.remove(path)
-- fa.request("http://127.0.0.1/upload.cgi?DEL="..path)
end
--Format file date to something meanigful
local function FatDateTimeToTable(datetime_fat)
local function getbits(x, from, to)
local mask = bit32.lshift(1, to - from + 1) - 1
local shifted = bit32.rshift(x, from)
return bit32.band(shifted, mask)
end
local fatdate = bit32.rshift(datetime_fat, 16)
local day = getbits(fatdate, 0, 4)
local month = getbits(fatdate, 5, 8)
local year = getbits(fatdate, 9, 15) + 1980
local fattime = getbits(datetime_fat, 0, 15)
local sec = getbits(fattime, 0, 4) * 2
local min = getbits(fattime, 5, 10)
local hour = getbits(fattime, 11, 15)
return {
year = string.format('%02d', year),
month = string.format('%02d', month),
day = string.format('%02d', day),
hour = string.format('%02d', hour),
min = string.format('%02d', min),
sec = string.format('%02d', sec),
}
end
--Looks for value in table
local function exists_in_table(tbl, val)
for i = 1, #tbl do
if (tbl[i] == val) then
return true
end
end
return false
end
local function create_thumbs()
print("Creating Thumbs!")
for i = 1, #dateTable do
local message = "d="..dateTable[i]
local headers = {
["Content-Length"] = string.len(message),
["Content-Type"] = "application/x-www-form-urlencoded"
}
local b, c, h = fa.request{
url = "http://"..server.."/"..serverDir.."/ct.php",
method = "POST",
headers = headers,
body = message
}
end
print("COMPLETE!")
end
local function upload_file(folder, file, subfolder)
local path = folder .. "/" .. file
-- Open the log file
local outfile = io.open(logfile, "a")
outfile:write(file .. " ... ")
local url = ftpstring..subfolder.."/"..file
local response = fa.ftp("put", url, path)
--print("Uploading", url)
--Check to see if it worked, and log the result!
if response ~= nil then
print("Success!")
outfile:write(" Success!\n")
set_uploaded(path)
if delete_after_upload == true then
print("Deleting " .. file)
outfile:write("Deleting " .. file .. "\n")
sleep(1000)
delete(path)
sleep(1000)
end
else
print(" Fail ")
outfile:write(" Fail\n")
end
--Close our log file
outfile:close()
end
local function sort_upload_table()
if (sortByFileName) then
print("Sorting filenames alphabetically")
table.sort(fileTable, function(a,b)
return a.file>b.file
end)
else
print("Sorting filenames by modded date")
table.sort(fileTable, function(a,b)
return a.sortDate>b.sortDate
end)
end
end
local function run_upload()
print("Starting upload")
for i = 1, #fileTable do
local ft = fileTable[i]
print("Uploading:", ft.folder, ft.file, ft.dateString)
upload_file(ft.folder, ft.file, ft.dateString)
end
create_thumbs()
end
local function walk_directory(folder)
parseThreads = parseThreads+1
for file in lfs.dir(folder) do
local path = folder .. "/" .. file
local skip = string.sub( file, 1, 2 ) == "._"
local attr = lfs.attributes(path)
local dt={}
if (not skip) then
print( "Found "..attr.mode..": " .. path )
if attr.mode == "file" then
local dateString = ""
if (attr.modification~=nil) then
dt = FatDateTimeToTable(attr.modification)
dateString = dt.day.."-"..dt.month.."-"..dt.year
end
if not is_uploaded(path) then
if (not exists_in_table(blackList, dateString)) then
local s,f = true, true
if (jpegsOnly) then
s,f = string.find(string.lower(file), ".jpg")
end
if (s and f) then
fileTable[#fileTable+1] =
{
folder = folder,
file = file,
dateString = dateString,
sortDate=dt.year..dt.month..dt.day..dt.hour..dt.min..dt.sec
}
--upload_file(folder, file, dateString)
end
else
print("Skipping ".. dateString.." - Blacklisted")
end
else
print(path .. " previously uploaded, skipping")
end
elseif attr.mode == "directory" then
print("Entering " .. path)
walk_directory(path)
end
end
end
parseThreads = parseThreads-1
if (parseThreads == 0) then
--create_thumbs()
sort_upload_table()
run_upload()
end
end
local function create_folders(folder)
if (#dateTable==0) then
print("ERROR: DID NOT FIND ANY DATES!")
return
end
for i = 1, #dateTable do
local message = "d="..dateTable[i]
local headers = {
["Content-Length"] = string.len(message),
["Content-Type"] = "application/x-www-form-urlencoded"
}
local b, c, h = fa.request{
url = "http://"..server.."/"..serverDir.."/cd.php",
method = "POST",
headers = headers,
body = message
}
if (b~=nil) then
b = string.gsub(b, "\n", "")
b = string.gsub(b, "\r", "")
end
if (b and b == "success") then
print("SUCCESS FROM SERVER FOR FOLDER:"..dateTable[i].."<<")
else
print("FAILED RESPONSE FROM SERVER FOR FOLDER:"..dateTable[i].."<<")
print("ADDING TO BLACKLIST")
blackList[#blackList+1] = dateTable[i]
end
end
print("OK FTP Starting...")
walk_directory(folder)
end
local function get_folders(folder)
parseThreads = parseThreads+1
local tableCount = 1
--Get the date range from the file
for file in lfs.dir(folder) do
local path = folder .. "/" .. file
local skip = string.sub( file, 1, 2 ) == "._"
local attr = lfs.attributes(path)
if (not skip) then
if (attr.mode == "file") then
print( "Datesearch Found "..attr.mode..": " .. path )
local dateString = ""
if (attr.modification~=nil) then
local dt = FatDateTimeToTable(attr.modification)
dateString = dt.day.."-"..dt.month.."-"..dt.year
end
if (not exists_in_table(dateTable, dateString)) then
dateTable[#dateTable+1] = dateString
end
elseif attr.mode == "directory" then
print("Datesearch Entering " .. path)
get_folders(path)
end
end
end
parseThreads = parseThreads-1
if (parseThreads == 0) then
create_folders(folder)
end
end
-- wait for wifi to connect
while string.sub(fa.ReadStatusReg(),13,13) ~= "a" do
print("Wifi not connected. Waiting...")
sleep(1000)
end
sleep(30*1000)
get_folders(folder)