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2016-08-24CLOUD: Add access to CurlRequest's StreamAlexander Tkachev
One can access CurlRequest's NetworkReadStream in order to find out HTTP response code or some other Stream-related data. OneDriveTokenRefresher uses it to print some info on that 404 error I'm trying to troubleshoot.
2016-08-24CLOUD: Refactor ConnectionManager/Requests systemAlexander Tkachev
ConnectionManager now storages Request * (not generates ids for it), Requests have control on their RequestState, RequestIdPair is now called Response and storages Request * with some response together. All related classes are changed to use it in more clean and understandable way. Request, RequestState and Response are carefully commented/documented.
2016-08-24CLOUD: Make OneDriveStorage::download() work fineAlexander Tkachev
Well, it takes two API calls instead of one now, but there are no problems with expired token because of it. This commit changes Storage::streamFile() to pass NetworkReadStream * through callback.
2016-08-24CLOUD: Add OneDriveStorage::download()Alexander Tkachev
Doesn't work when token is invalid, though.
2016-08-24CLOUD: Add OneDriveTokenRefresherAlexander Tkachev
OneDriveTokenRefresher is a CurlJsonRequest replacement for OneDriveStorage methods. It behaves very similarly, but checks received JSON before passing it to user. If it contains "error" key, it attempts to refresh the token through OneDriveStorage, and then restarts the original request, so user won't notice that there ever was an error.
2016-08-24CLOUD: Fix CurlJsonRequest to use JsonCallbackAlexander Tkachev
Type safety first.
2016-08-24CLOUD: Change Request::handle()Alexander Tkachev
With new ConnectionManager upgrade Requests indicate that they are finished with RequestInfo.state. No need to use handle() return value anymore.
2016-08-24CLOUD: Add RequestIdPair structAlexander Tkachev
Can be used with Callback<T> (means it's still type safe). It's used to pass not only Request id to user's callback, but also a value user wanted. void *data field is removed from RequestInfo.
2016-08-24CLOUD: Add RequestInfo structAlexander Tkachev
ConnectionManager upgrade: it now contains a special struct for each request, so you can access request status and data by request id.
2016-08-24CLOUD: Add Requests idAlexander Tkachev
(Upgrading ConnectionManager step by step.)
2016-08-24CLOUD: Add OneDrive refresh_token supportAlexander Tkachev
It might be not that easy to restart the request after new token received, though.
2016-08-24CLOUD: Add DownloadRequest stubAlexander Tkachev
It reads the passed NetworkReadStream and prints its contents onto console (for now). It would be writing contents into file. To simplify work with raw NetworkReadStream there is a new CurlRequest. It basically does nothing, but as ConnMan handles transfers only if there is an active Request, you need some Request to get NetworkReadStream working. Thus, there is a CurlRequest, which is active until NetworkReadStream is completely read. CurlRequest also has useful addHeader() and addPostField() methods in order to customize the request easily. Use execute() method to get its NetworkReadStream. DropboxStorage implements streamFile() and download() API methods. As DownloadRequest is incomplete, it is not actually downloading a file, though.
2016-08-24CLOUD: Add DropboxStorage::listDirectory sketchAlexander Tkachev
It doesn't support any "has_more", doesn't call user's callback and just prints JSON instead of parsing in into an array of files. I believe it would become DropboxListDirectoryRequest in the next commit.
2016-08-24CLOUD: Fix Request destructorAlexander Tkachev
It now contains not a pointer to a function, but an actual pointer, which must be freed.
2016-08-24CLOUD: Polish CallbacksAlexander Tkachev
Cleaned up all example code and old callbacks. New Callback classes are introduced in "common/callback.h" and documented.
2016-08-24CLOUD: Add CallbackBridgeAlexander Tkachev
This commit also adds GlobalFunctionCallback, because it was needed in order to replace plain C pointers to functions (which were used in Request) into our object-oriented BaseCallback pointers.
2016-08-24CLOUD: Add object-oriented CallbacksAlexander Tkachev
These callbacks can call object's methods, not some global C functions. DropboxStorage::info2() and DropboxStorage::infoMethodCallback() demonstrate the idea.
2016-08-24CLOUD: Add complex callbacksAlexander Tkachev
Originally, I intended to add Storage API, StorageFile and StorageInfo stubs. When I tried to implement a simple info() call, I ended up fixing Request to contain some pointer field and all callbacks to have Request* parameter. And, now I have to place callback pointer into Request. which calls another callback. And, eventually, these "simple" callbacks would again require another pointer (to some caller class).
2016-08-24CLOUD: Make ConnectionManager singletonAlexander Tkachev
With ConnectionManager singleton one can start their Requests without creating Storage instance. Moreover, Storage instance should contain cloud API, not Requests-related handling and timer starting methods. Thus, these methods were moved into ConnectionManager itself.
2016-08-24CLOUD: Add Dropbox into CloudManager's configsAlexander Tkachev
This commit adds: * ConfMan's new "cloud" domain; * CloudManager's init() method, where it loads keys from "cloud" configs domain; * CurlJsonRequest's addHeader() and addPostField() methods; * temporary Storage's printInfo() method; * DropboxStorage's implementation of printInfo(), which is using access token and user id; * DropboxStorage's loadFromConfig() static method to load access token and user id from configs and create a Storage instance with those; * temporary DropboxStorage's authThroughConsole() static method, which guides user through auth process from the console. So, in CloudManager's init() implementation ScummVM checks that there is "current_storage_type" key in "cloud" domain of configs, and loads corresponding storage if there is such key. If there is no such key, ScummVM offers user to auth with Dropbox. That's done through console, and thus it's temporary (it also requires restarting ScummVM twice and manually editing config.ini file).
2016-08-24CLOUD: Fix CurlJsonRequestAlexander Tkachev
It's using MemoryWriteStreamDynamic instead of String and it prepares raw byte contents of this stream for JSON::parse().
2016-08-24CLOUD: Add CurlJsonRequestAlexander Tkachev
Now we can do REST API request by creating CurlJsonRequest and waiting for it to call our callback. Passed pointer is Common::JSONValue. This commit also does some minor variable renaming fixes.
2016-08-24CLOUD: Rewrite NetworkReadStreamAlexander Tkachev
Now it is based on MemoryReadWriteStream, which is introduced by this commit. This stream is using ring buffer and is dynamically increasing its size when necessary.