[gentoo-user] Problem with socks syscall

[gentoo-user] Problem with socks syscall

[tuxic]

Hi,

I experimented with torify of the TOR project today and failed

host:/tmp>sudo torify aria2c --async-dns false http:aria2c http://example.com
1591180702 WARNING torsocks[20364]: [syscall] Unsupported syscall number 2. Denying the call (in tsocks_syscall() at syscall.c:604)
1591180702 WARNING torsocks[20364]: [syscall] Unsupported syscall number 2. Denying the call (in tsocks_syscall() at syscall.c:604)
Exception caught
Exception: [download_helper.cc:451] errorCode=1 Unrecognized URI or unsupported protocol: false

[1]    20363 exit 1     sudo torify aria2c --async-dns false http:aria2c http://example.com

Aria2, torsocks and torify are freshly compiled/installed:

[I] net-misc/aria2
     Available versions:  1.34.0-r2^t {adns bittorrent +gnutls jemalloc libuv +libxml2 metalink +nettle nls scripts sqlite ssh ssl tcmalloc test xmlrpc}
     Installed versions:  1.34.0-r2^t(12:37:52 PM 06/03/2020)(adns bittorrent gnutls jemalloc libuv libxml2 metalink nettle nls scripts sqlite ssh ssl xmlrpc -tcmalloc -test)
     Homepage:            https://aria2.github.io/
     Description:         A download utility with segmented downloading with BitTorrent support

[I] acct-group/tor
     Available versions:  0
     Installed versions:  0(07:00:43 PM 06/02/2020)
     Description:         group for tor daemon

[I] acct-user/tor
     Available versions:  0
     Installed versions:  0(07:00:50 PM 06/02/2020)
     Description:         user for tor daemon

[I] net-proxy/torsocks
     Available versions:  2.2.0 2.3.0 {static-libs}
     Installed versions:  2.3.0(07:23:00 PM 06/02/2020)(-static-libs)
     Homepage:            https://github.com/dgoulet/torsocks
     Description:         Use most socks-friendly applications with Tor

[I] net-vpn/tor
     Available versions:  0.4.2.7^t (~)0.4.3.5^t {caps doc libressl lzma +man scrypt seccomp selinux +server systemd test tor-hardening zstd}
     Installed versions:  0.4.3.5^t(07:11:51 PM 06/02/2020)(caps doc lzma man scrypt seccomp server tor-hardening zstd -libressl -selinux -systemd -test)
     Homepage:            http://www.torproject.org/
     Description:         Anonymizing overlay network for TCP

The TOR webbrowser works without any problems.

This is my first contact with tor/torsocks/...

I briefly checked the kernel for a SOCK-related configuration
item and found nothing. On the other hand, if this configuration
item is named completly different, then I would be out of business.

How can I use torify/torsocks successfully?

Cheers!
Meino

Re: [gentoo-user] Problem with socks syscall

[Ashley Dixon]

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On Wed, Jun 03, 2020 at 12:47:34PM +0200, tuxic@posteo.de wrote:
> host:/tmp>sudo torify aria2c --async-dns false http:aria2c http://example.com
> 1591180702 WARNING torsocks[20364]: [syscall] Unsupported syscall number 2. Denying the call (in tsocks_syscall() at syscall.c:604)
> 1591180702 WARNING torsocks[20364]: [syscall] Unsupported syscall number 2. Denying the call (in tsocks_syscall() at syscall.c:604)
> Exception caught
> Exception: [download_helper.cc:451] errorCode=1 Unrecognized URI or unsupported protocol: false

aria2c is quitting not because of the unsupported syscall warnings, but the fact
that the syntax of your command is incorrect; it  is  interpreting  `--async-dns
false` not as a key-value pair, but  as  a  U.R.L.\  specification.   Hence  the
`unrecognized URI: false` error.

Try fixing the command as such:
        $ torify aria2c --async-dns=false http://example.com

-- 

Ashley Dixon
suugaku.co.uk

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