libcloudstorage

A C++ library providing access to files located in various cloud services
licensed under GNU LGPLv2.1. It is focused on the basic operations on those
services.

Supported cloud providers:

GoogleDrive
OneDrive
Dropbox
box.com
YandexDisk
WebDAV
mega.nz
AmazonS3
pCloud
hubiC
4shared
Google Photos (partial)

Supported operations on files:

list directory
download file
upload file
get thumbnail
delete file
create directory
move file
rename file
fetch direct, preauthenticated url to file

Requirements:

jsoncpp
tinyxml2
libmicrohttpd (optional)
cURL (with OpenSSL/c-ares, optional)
libcryptopp (optional, required for AmazonS3)
mega (optional, required for mega.nz)

Building:

The generic way to build and install it is:

mkdir build && cd build && cmake .. && make && sudo make install

Optional dependency notes:

libcryptopp:

when not found, ICrypto interface needs to be implemented
libcurl

when not found, IHttp interface needs to be implemented
libmicrohttpd

when not found, IHttpServer interface needs to be implemented
boost-filesystem

when found, LocalDrive provider representing local directory will be
included
mega

when not found, mega cloud provider will not be included

FUSE:

In bin/fuse there is implemented a user space file system using fuse
(https://github.com/libfuse/libfuse) library. It will be build when fuse is
found. The file system is implemented using libfuse's low level api; however
high level api implementation is also provided. The file system supports
moving, renaming, creating directories, reading and writing new files. Writing
over already present files in cloud provider is not supported. The file system
uses asynchronous I/O to its full potency. It doesn't cache files anywhere by
itself which implies no local storage overhead. Most cloud providers are fast
enough when it comes to watching videos; with mega.nz being the fastest and
Google Drive being the slowest.

Windows:

It is possible to run cloudstorage-fuse under Windows using Dokan
(https://github.com/dokan-dev/dokany).

Usage:

To add cloud providers to file system, first the cloud providers need to be
added. This can be done by calling:

cloudstorage-fuse --add=provider_label

After cloud providers are added, the file system can be mount using:

cloudstorage-fuse mountpoint

Cloud Browser:

In bin/cloudbrowser there is a program which provides easy graphics user
interface for all the features implemented in libcloudstorage. It will be
built when its dependencies are found.

Cloud Browser dependencies:

Qt5Core, Qt5Gui, Qt5Quick
kirigami (https://github.com/KDE/kirigami)
Qt5WebView

when found, Cloud Browser will use it to present the authorization scheme
ffmpeg

when found, Cloud Browser will generate fallback thumbnails if cloud provider
doesn't provide any
mpv

when found, Cloud Browser will use mpv-based media player