328 lines
14 KiB
Lua
328 lines
14 KiB
Lua
local args = {...}
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local internet=require("internet")
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local filesystem=require("filesystem")
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local unicode=require("unicode")
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YES = {"y","yes","Y","Yes","YES"}
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NO = {"n","no","N","No","NO"}
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SupportedRemotes = {
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Github = {
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BaseUrl = "https://github.com/",
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RawApiUrl = "https://raw.githubusercontent.com/",
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Implemented = true
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},
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Gitea = {
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BaseUrl = "https://git.realrobin.io",
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Implemented = false
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}
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}
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EmptyRepository = {
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Owner = nil,
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Name = nil,
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ShortName = nil,
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RepoIdentifier = nil,
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Remote = nil,
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CurrentBranch = nil,
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CurrentLocalPath = nil
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}
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---default repo to update
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DefaultRepository = {
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Owner = "seesberger",
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Name = "PowerManager",
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ShortName = "powerman",
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RepoIdentifier = "seesberger/PowerManager",
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Remote = SupportedRemotes.Github,
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CurrentBranch = "master",
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CurrentLocalPath = ""
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}
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DefaultTemporaryDownloadPath = "/home/.tmp/git/"
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DefaultInstallationPath = "/usr/"
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local function askYesOrNoQuestion(question, expectedTrue, expectedFalse, defaultYesOnEnter)
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local function checkContains(array,value)
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for idx, val in pairs(array) do
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if value == val then return true end
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end
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return false
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end
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if defaultYesOnEnter==true then print(question.." [Y/n]") else print(question.." [y/N]") end
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while true do
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local userInput = io.read("l")
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if checkContains({""}, userInput) then return defaultYesOnEnter end
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if checkContains(expectedTrue, userInput) then return true end
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if checkContains(expectedFalse, userInput) then return false end
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print("Please answer with yes or no. You can also press ENTER to choose the default option.")
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end
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end
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local function askTextQuestion(question, defaultAnswerOnEnter, allowOnly)
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local allowedInputsString = ""
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for idx, entry in pairs(allowOnly) do allowedInputsString = allowedInputsString..entry end
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if allowOnly then print(question.." ["..allowedInputsString.."]")
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else print(question) end
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local userInput = nil
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local found = false
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repeat
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userInput = io.read("l")
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if allowOnly then
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for idx, entry in pairs(allowOnly) do if entry == userInput then found = true end end
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else break end
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until found
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if userInput == "" then return defaultAnswerOnEnter else return userInput end
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end
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local function makeDirIfNotExists(target)
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if filesystem.exists(target) then
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if not filesystem.isDirectory(target) then error("target directory already exists and is not a directory.") end
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if filesystem.get(target).isReadOnly() then error("target directory is read-only.") end
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else
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if not filesystem.makeDirectory(target) then error("directory creation failed") end
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end
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end
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--- todo: pcall and catch errors
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local function downloadRepo(repository, remote, autoOverride)
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local function validateRepositoryIdentifier(repository)
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if not repository.RepoIdentifier:match("^[%w-.]*/[%w-.]*$") then
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print('"'..repository.RepoIdentifier..'" does not look like a valid repo identifier.\nShould be <owner>/<reponame>')
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return
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end
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end
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validateRepositoryIdentifier(repository)
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--- FIXME: If download only mode is enabled, set this to /home. still todo
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local targetDownloadPath = DefaultTemporaryDownloadPath..repository.RepoIdentifier
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repository.CurrentLocalPath = targetDownloadPath.."/"
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local success, res = pcall(makeDirIfNotExists, targetDownloadPath)
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if not success then error("the download failed because of filesystem errors.") end
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local function fetchFilesAndSubdirs(repository, remote, dir)
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dir = dir or "" -- default value, start at root dir
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if remote == SupportedRemotes.Github then
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print("fetching contents for "..repository.RepoIdentifier..dir)
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local githubApiUrl="https://api.github.com/repos/"..repository.RepoIdentifier.."/contents"..dir
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local success,chunks=pcall(internet.request,githubApiUrl)
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local raw=""
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local files={}
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local directories={}
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if success then for chunk in chunks do raw=raw..chunk end
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else error("you've been cut off. Serves you right.") end
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--- do not question the magic of the outer gods
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--- turns raw response into t, which has usable fields.
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raw=raw:gsub("%[","{"):gsub("%]","}"):gsub("(\".-\"):(.-[,{}])",function(a,b) return "["..a.."]="..b end)
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local t=load("return "..raw)()
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for i=1,#t do
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if t[i].type=="dir" then
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table.insert(directories,dir.."/"..t[i].name)
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local subfiles,subdirs=fetchFilesAndSubdirs(repository,remote,dir.."/"..t[i].name)
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for i=1,#subfiles do
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table.insert(files,subfiles[i])
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end
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for i=1,#subdirs do
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table.insert(directories,subdirs[i])
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end
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else
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files[#files+1]=dir.."/"..t[i].name
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end
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end
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return files, directories
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else error("not Implemented") end
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end
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--- fetch and make dirs in the target download path recursively
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local files,dirs=fetchFilesAndSubdirs(repository, repository.Remote, "")
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for i=1,#dirs do
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local success, err = pcall(makeDirIfNotExists, targetDownloadPath..dirs[i])
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if not success then error(("the download failed because of filesystem errors. %x"):format(err)) end
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end
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local replaceMode="ask"
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if autoOverride == true then replaceMode = "always" end
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local function downloadFiles(files, targetDownloadPath, replaceMode)
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local replace=nil
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local downloadedFileTargets = {}
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for i=1,#files do
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if replaceMode == "always" then replace = true end
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local fileExists = filesystem.exists(targetDownloadPath..files[i])
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if fileExists then
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--- FIXME dir löschen statt error
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if filesystem.isDirectory(targetDownloadPath..files[i]) then error("file "..targetDownloadPath..files[i].." blocked by directory with same name!") end
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if replace == nil then
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local userInput = askTextQuestion("\nFile "..targetDownloadPath..files[i].." already exists.\nReplace with new version?","n",{"y","n","A","S"})
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--- FIXME: replaceMode ist broken. A wird immer wieder gefragt.
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if userInput=="A" then
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replaceMode="always"
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userInput="y"
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elseif userInput=="S" then
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replaceMode="never"
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userInput="n"
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end
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if userInput == "y" then replace=true end
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if userInput == "n" then replace=false end
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end
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end
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if fileExists and replace then filesystem.remove(targetDownloadPath..files[i]) end
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if replace or (replace == nil) then
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--- TODO @Freddy: Coole Animation hinzufügen
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print("downloading file "..files[i])
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--- HACK: RawApiUrl is for using Github Raw API. may have to be patched for Gitea Support
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local url=repository.Remote.RawApiUrl..repository.RepoIdentifier.."/"..repository.CurrentBranch..files[i]
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local success,response=pcall(internet.request,url)
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if success then
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local raw=""
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for chunk in response do
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raw=raw..chunk
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end
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local absoluteDownloadFileTargetPath = targetDownloadPath..files[i]
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print("writing to "..absoluteDownloadFileTargetPath)
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local file=io.open(absoluteDownloadFileTargetPath,"w")
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if file then -- might be nil under wierd circumstances
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file:write(raw)
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file:close()
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end
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table.insert(downloadedFileTargets, files[i])
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else error("a file did not download correctly. aborting") end
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else error("file not removed, but installation was cancelled - This might result in a broken install.") end
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end
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--- return list of all abolute paths the files were downloaded to
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return downloadedFileTargets
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end
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success, res = pcall(downloadFiles, files, targetDownloadPath, replaceMode)
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if success then print("All files downloaded successfully.") return res else error(res) end
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end
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local function installFiles(downloadedFiles, downloadTargetDir, installTargetDir)
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local installedFiles = {}
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--- FIXME: ask user about replacing files.
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local replace = true
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makeDirIfNotExists(installTargetDir)
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for idx, file in pairs(downloadedFiles) do
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print(idx..": Installing File "..downloadTargetDir..file:sub(2,-1).." to target directory "..installTargetDir..file)
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local fileExists = filesystem.exists(installTargetDir..file)
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if fileExists and replace then filesystem.remove(installTargetDir..file) end
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if replace or (replace == nil) then
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--- TODO @Freddy: Coole Animation hinzufügen
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os.execute("cp "..downloadTargetDir..file:sub(2,-1).." "..installTargetDir..file)
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table.insert(installedFiles, installTargetDir..file)
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else error("file not removed, but installation was cancelled - This might result in a broken install.") end
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end
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return installedFiles
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end
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local function installShortcut(currentRepoPath, shortcutName, targetDir)
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print("installing shortcut...")
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makeDirIfNotExists(targetDir)
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os.execute("mv "..currentRepoPath.."shortcut.lua "..targetDir..shortcutName..".lua")
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end
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--- todo: automatic read of dependency list (txt file containing lines with <link> <dst> or somethink like it)
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--- removeme
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local function legacyInstallDependencies()
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print("Legacy Mode: Installing hardcoded dependencies...")
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os.execute("wget -f https://github.com/kevinkk525/OC-GUI-API/raw/master/shapes_default.lua /lib/shapes_default.lua")
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os.execute("wget -f https://github.com/kevinkk525/OC-GUI-API/raw/master/GUI.lua /lib/GUI.lua")
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os.execute("wget -f https://github.com/kevinkk525/OC-GUI-API/raw/master/term_mod.lua /lib/term_mod.lua")
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os.execute("wget -f https://github.com/kevinkk525/OC-GUI-API/raw/master/tech_demo.lua /home/GUI_tech_demo.lua")
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end
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local function removeDownloads(downloadTargetDir, downloadedFiles)
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for idx, file in pairs(downloadedFiles) do
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file = file:sub(2,-1) --- get "file" from previous string "/file"
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print(idx..": Removing temporary file "..downloadTargetDir..file)
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local fileExists = filesystem.exists(downloadTargetDir..file)
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if fileExists then filesystem.remove(downloadTargetDir..file) end
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end
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print("cleaned temporary files.")
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end
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local function createManifest(installedFiles, installedShortcuts, manifestTarget, repoName)
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makeDirIfNotExists(manifestTarget)
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local manifest = ""
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for idx, file in pairs(installedFiles) do
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manifest = manifest..file.."\n"
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end
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for idy, shortcut in pairs(installedShortcuts) do
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manifest = manifest..shortcut.."\n"
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end
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print("writing manifest to "..manifestTarget.."/"..repoName)
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local file=io.open(manifestTarget.."/"..repoName,"w")
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if file then -- might be nil under wierd circumstances
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file:write(manifest)
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file:close()
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end
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end
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--- fix legacy shit
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local function runFullInstallTask(repository, shortcutName)
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--- first, download the actual repo.
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--- then, find dependencies - if then exist, download and install them
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--- then, install the actual program
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local installTargetDir = "/usr/"..repository.Name
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local shortcutTargetDir = "/usr/bin/"
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local downloadTargetDir = DefaultTemporaryDownloadPath
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local manifestTarget = "/etc/manifest/"
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legacyInstallDependencies() --only for testing while new version not implemented yet
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print("downloading "..repository.RepoIdentifier)
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local downloadedFiles = downloadRepo(repository, repository.Remote, false) --enable auto-overwrite in other situations still todo
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local installedFiles = installFiles(downloadedFiles, downloadTargetDir, installTargetDir)
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local installedShortcuts = installShortcut(repository.CurrentLocalPath, shortcutName, shortcutTargetDir)
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removeDownloads(downloadTargetDir, downloadedFiles)
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createManifest(installedFiles, installedShortcuts, manifestTarget, repository.Name)
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end
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local function printHelpText()
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local helpText = "This updater pulls the git files for installation and application updates.\n"..
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"Usage:\n" ..
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"updater <option> - no args: manual update and install\n"..
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" '' -h or - this help text\n"..
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" '' -d or - install default config"
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print(helpText)
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end
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local function run(cliArgs)
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local repo = EmptyRepository
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local shortcutName = nil
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if #cliArgs<1 then
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print("No Arguments given. For help, please check -h or --help")
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return
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end
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if cliArgs[1] == "-h" then
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printHelpText()
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return
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elseif cliArgs[1] == "-d" then
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--- ask user about repo
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if askYesOrNoQuestion("Use default config? (github::seesberger/PowerManager)?",YES,NO,true) == true then
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repo = DefaultRepository
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--- ask user about shortcutname
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if askYesOrNoQuestion("Use default shortcut name \"powerman\"?",YES,NO,true) then shortcutName = "powerman" end
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runFullInstallTask(repo, shortcutName)
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--- TODO non-default config
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else print("other things not implemented yet") end
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else
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print('"'..cliArgs[1]..'" - Bad argument. Try --help')
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print("Program exited.")
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end
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end
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run(args)
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