Previously we only scanned pool socket to check they are timed out
when we pooled another socket. This means that pooled socket is not
closed long time (stays in CLOSE-WAIT state) if we don't pool any more
socket. In this commit, we now check pooled socket periodically (30
seconds) to avoid the sockets hanging in CLOSE-WAIT state long time.
See GH-477
This is desirable so that we don't have to wake up disk if control
file is not changed, and it is not have to be written again. We use
the same method (SHA1 hash) to check the content is the same. The
limitation is the hash is stored in memory, so we have to write the
first time in each session.
See GH-382
This commits implements basic downloading feature for sftp URI. This
includes segmented downloads, and connection (sftp session) pooling.
Download via HTTP proxy has not been implemented yet.
We use libssh2 to implement sftp feature. SSHSession is closely
designed to TLSSession, but it differs in several aspects. In this
code, we only implements read part of sftp, since aria2 won't offer
uploading feature. Adding SSH/sftp to SocketCore is a bit bloat. But
by doing this we can reuse DownloadCommand, without mostly no
modification. We can just create SSHDownloadCommand by inheriting it,
just like existing ftp.
Use one of the following to provide random bytes:
- Windows CryptGenRandom
- Linux getrandom (syscall interface to urandom, without nasty corner
cases such as file descriptor exhaustion or re-linked /dev/urandom)
- std::device_random (C++ random device, which usually will be urandom)
This also equalizes util::getRandom and SimpleRandomizer (the former
will now use the latter) instead of having essentially two different
PRNG interfaces with potentially different quality.
Closes GH-320
The algorithms the `CryptProv` on Windows supports does not currently
include SHA-224, so there is a "dark spot" in this implementation. Also
on Win XP < SP3, most of the SHA-2 family is not actually supported.
All other implementation provide support for MD5, SHA-1 and all of the
SHA-2 family, hence drop the incomplete WinMessageDigest implementation
in favor of any other supported implementation (at least the internal
implementation is always available at compile-time).
DefaultPieceStorage may be referenced by one of DHT task (e.g.,
DHTPeerLookupTask), after RequestGroup was deleted, and even after
RequestGroupMan was deleted. DefaultPieceStorage has a reference to
MultiDiskAdaptor which calls RequestGroupMan object on destruction.
So when DHT task is destroyed, DefaultPieceStorage is destroyed, which
in turn destroys MultiDiskAdaptor. DHT task is destroyed after
RequestGroupMan was destroyed, MultiDiskAdaptor will use now freed
RequestGroupMan object, this is use-after-free.
Now you can build bittorrent support without without external
libraries, meaning you can skip libnettle, libgmp, libgcrypt, GnuTLS and
OpenSSL on OSX (for now).
Reusing a bignum (well, unsigned very-long) implementation I had lying
around for years and just cleaned up a bit and brought to C++11 land.
It might not be the most performant implementation, but it shoud be fast
enough for our purposes and will go a long way of removing gcrypt,
nettle, gmp, openssl dependencies when using AppleTLS and WinTLS
(upcoming).
Since Android ndk r9, __set_errno is deprecated. It is now defined as
inline function in errno.h. The syscall assembly calls __set_errno,
but since libc.so does not export it, the link fails. To workaround
this, replace all occurrences of __set_errno with a2_set_errno and
define it as normal C function.
IOFile provides the same interface of old BufferedFile. It provides
extension points as pure virtual functions. Those functions are
implemented by 2 concrete subclasses: BufferedFile and GZipFile.
Android NDK R8e does not provide ftruncate64, but bionic has the
assembler code to access kernel function. We borrowed those
ftruncate64.S files from android source code repository. It turns out
that x86 asm.h in NDK R8e is also broken, so latest asm.h was also
borrowed.
By default, libaria2 feature is disabled. Use --enable-libaria2
to enable it. libaria2 static build is also disabled by default.
Use --enable-static to enable it.
Tatsuhiro Tsujikawa