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koreader/frontend/apps/cloudstorage/dropboxapi.lua
2023-07-11 07:49:52 +03:00

294 lines
10 KiB
Lua

local DocumentRegistry = require("document/documentregistry")
local JSON = require("json")
local http = require("socket.http")
local lfs = require("libs/libkoreader-lfs")
local logger = require("logger")
local ltn12 = require("ltn12")
local socket = require("socket")
local socketutil = require("socketutil")
local util = require("util")
local BaseUtil = require("ffi/util")
local _ = require("gettext")
local DropBoxApi = {
}
local API_TOKEN = "https://api.dropbox.com/oauth2/token"
local API_URL_INFO = "https://api.dropboxapi.com/2/users/get_current_account"
local API_GET_SPACE_USAGE = "https://api.dropboxapi.com/2/users/get_space_usage"
local API_LIST_FOLDER = "https://api.dropboxapi.com/2/files/list_folder"
local API_LIST_ADD_FOLDER = "https://api.dropboxapi.com/2/files/list_folder/continue"
local API_CREATE_FOLDER = "https://api.dropboxapi.com/2/files/create_folder_v2"
local API_DOWNLOAD_FILE = "https://content.dropboxapi.com/2/files/download"
local API_UPLOAD_FILE = "https://content.dropboxapi.com/2/files/upload"
function DropBoxApi:getAccessToken(refresh_token, app_key_colon_secret)
local sink = {}
local data = "grant_type=refresh_token&refresh_token=" .. refresh_token
local request = {
url = API_TOKEN,
method = "POST",
headers = {
["Authorization"] = "Basic " .. require("ffi/sha2").bin_to_base64(app_key_colon_secret),
["Content-Type"] = "application/x-www-form-urlencoded",
["Content-Length"] = string.len(data),
},
source = ltn12.source.string(data),
sink = ltn12.sink.table(sink),
}
socketutil:set_timeout()
local code, _, status = socket.skip(1, http.request(request))
socketutil:reset_timeout()
local result_response = table.concat(sink)
if code == 200 and result_response ~= "" then
local _, result = pcall(JSON.decode, result_response)
return result["access_token"]
end
logger.warn("DropBoxApi: cannot get access token:", status or code)
logger.warn("DropBoxApi: error:", result_response)
end
function DropBoxApi:fetchInfo(token, space_usage)
local url = space_usage and API_GET_SPACE_USAGE or API_URL_INFO
local sink = {}
local request = {
url = url,
method = "POST",
headers = {
["Authorization"] = "Bearer " .. token,
},
sink = ltn12.sink.table(sink),
}
socketutil:set_timeout()
local code, _, status = socket.skip(1, http.request(request))
socketutil:reset_timeout()
local result_response = table.concat(sink)
if code == 200 and result_response ~= "" then
local _, result = pcall(JSON.decode, result_response)
return result
end
logger.warn("DropBoxApi: cannot get account info:", status or code)
logger.warn("DropBoxApi: error:", result_response)
end
function DropBoxApi:fetchListFolders(path, token)
if path == nil or path == "/" then path = "" end
local data = "{\"path\": \"" .. path .. "\",\"recursive\": false,\"include_media_info\": false,"..
"\"include_deleted\": false,\"include_has_explicit_shared_members\": false}"
local sink = {}
local request = {
url = API_LIST_FOLDER,
method = "POST",
headers = {
["Authorization"] = "Bearer ".. token,
["Content-Type"] = "application/json",
["Content-Length"] = #data,
},
source = ltn12.source.string(data),
sink = ltn12.sink.table(sink),
}
socketutil:set_timeout()
local code, _, status = socket.skip(1, http.request(request))
socketutil:reset_timeout()
local result_response = table.concat(sink)
if code == 200 and result_response ~= "" then
local ret, result = pcall(JSON.decode, result_response)
if ret then
-- Check if more results, and then get them
if result.has_more then
logger.dbg("DropBoxApi: found additional files")
result = self:fetchAdditionalFolders(result, token)
end
return result
end
end
logger.warn("DropBoxApi: cannot get folder content:", status or code)
logger.warn("DropBoxApi: error:", result_response)
end
function DropBoxApi:downloadFile(path, token, local_path)
local data1 = "{\"path\": \"" .. path .. "\"}"
socketutil:set_timeout(socketutil.FILE_BLOCK_TIMEOUT, socketutil.FILE_TOTAL_TIMEOUT)
local code, headers, status = socket.skip(1, http.request{
url = API_DOWNLOAD_FILE,
method = "GET",
headers = {
["Authorization"] = "Bearer ".. token,
["Dropbox-API-Arg"] = data1,
},
sink = ltn12.sink.file(io.open(local_path, "w")),
})
socketutil:reset_timeout()
if code ~= 200 then
logger.warn("DropBoxApi: cannot download file:", status or code)
end
return code, (headers or {}).etag
end
function DropBoxApi:uploadFile(path, token, file_path, etag, overwrite)
local data = "{\"path\": \"" .. path .. "/" .. BaseUtil.basename(file_path) ..
"\",\"mode\":" .. (overwrite and "\"overwrite\"" or "\"add\"") ..
",\"autorename\": " .. (overwrite and "false" or "true") ..
",\"mute\": false,\"strict_conflict\": false}"
socketutil:set_timeout(socketutil.FILE_BLOCK_TIMEOUT, socketutil.FILE_TOTAL_TIMEOUT)
local code, _, status = socket.skip(1, http.request{
url = API_UPLOAD_FILE,
method = "POST",
headers = {
["Authorization"] = "Bearer ".. token,
["Dropbox-API-Arg"] = data,
["Content-Type"] = "application/octet-stream",
["Content-Length"] = lfs.attributes(file_path, "size"),
["If-Match"] = etag,
},
source = ltn12.source.file(io.open(file_path, "r")),
})
socketutil:reset_timeout()
if code ~= 200 then
logger.warn("DropBoxApi: cannot upload file:", status or code)
end
return code
end
function DropBoxApi:createFolder(path, token, folder_name)
local data = "{\"path\": \"" .. path .. "/" .. folder_name .. "\",\"autorename\": false}"
socketutil:set_timeout()
local code, _, status = socket.skip(1, http.request{
url = API_CREATE_FOLDER,
method = "POST",
headers = {
["Authorization"] = "Bearer ".. token,
["Content-Type"] = "application/json",
["Content-Length"] = #data,
},
source = ltn12.source.string(data),
})
socketutil:reset_timeout()
if code ~= 200 then
logger.warn("DropBoxApi: cannot create folder:", status or code)
end
return code
end
-- folder_mode - set to true when we want to see only folder.
-- We see also extra folder "Long-press to select current directory" at the beginning.
function DropBoxApi:listFolder(path, token, folder_mode)
local dropbox_list = {}
local dropbox_file = {}
local tag, text
local ls_dropbox = self:fetchListFolders(path, token)
if ls_dropbox == nil or ls_dropbox.entries == nil then return false end
for _, files in ipairs(ls_dropbox.entries) do
text = files.name
tag = files[".tag"]
if tag == "folder" then
text = text .. "/"
if folder_mode then tag = "folder_long_press" end
table.insert(dropbox_list, {
text = text,
url = files.path_display,
type = tag,
})
--show only file with supported formats
elseif tag == "file" and (DocumentRegistry:hasProvider(text)
or G_reader_settings:isTrue("show_unsupported")) and not folder_mode then
table.insert(dropbox_file, {
text = text,
mandatory = util.getFriendlySize(files.size),
url = files.path_display,
type = tag,
})
end
end
--sort
table.sort(dropbox_list, function(v1,v2)
return v1.text < v2.text
end)
table.sort(dropbox_file, function(v1,v2)
return v1.text < v2.text
end)
-- Add special folder.
if folder_mode then
table.insert(dropbox_list, 1, {
text = _("Long-press to choose current folder"),
url = path,
type = "folder_long_press",
})
end
for _, files in ipairs(dropbox_file) do
table.insert(dropbox_list, {
text = files.text,
mandatory = files.mandatory,
url = files.url,
type = files.type,
})
end
return dropbox_list
end
function DropBoxApi:showFiles(path, token)
local dropbox_files = {}
local tag, text
local ls_dropbox = self:fetchListFolders(path, token)
if ls_dropbox == nil or ls_dropbox.entries == nil then return false end
for _, files in ipairs(ls_dropbox.entries) do
text = files.name
tag = files[".tag"]
if tag == "file" and (DocumentRegistry:hasProvider(text) or G_reader_settings:isTrue("show_unsupported")) then
table.insert(dropbox_files, {
text = text,
url = files.path_display,
size = files.size,
})
end
end
return dropbox_files
end
function DropBoxApi:fetchAdditionalFolders(response, token)
local out = response
local cursor = response.cursor
repeat
local data = "{\"cursor\": \"" .. cursor .. "\"}"
local sink = {}
socketutil:set_timeout()
local request = {
url = API_LIST_ADD_FOLDER,
method = "POST",
headers = {
["Authorization"] = "Bearer ".. token,
["Content-Type"] = "application/json",
["Content-Length"] = #data,
},
source = ltn12.source.string(data),
sink = ltn12.sink.table(sink),
}
local headers_request = socket.skip(1, http.request(request))
socketutil:reset_timeout()
if headers_request == nil then
return nil
end
local result_response = table.concat(sink)
local ret, result = pcall(JSON.decode, result_response)
if not ret then
return nil
end
for __, v in ipairs(result.entries) do
table.insert(out.entries, v)
end
if result.has_more then
cursor = result.cursor
end
until not result.has_more
return out
end
return DropBoxApi