bryanpkc / corkscrew Goto Github PK

FYI, Pat Padgett seems to have surfaced again, I stumbled upon this:
https://github.com/patpadgett/corkscrew

Hello,

I am trying to use the auth option, but it doesn't work, unforunatelly, this is all I get, no more verbose errors:

petr.bena@MacBook:~/.ssh$ corkscrew vpn.insw.cz 80 test 1 proxy
Proxy could not open connnection to test:  Proxy Authentication Required

When I try to connect for example via firefox or any other SW that ask me for proxy credentials, I just give it user and password that is written on first line in file "proxy" and it works.

I created that file as instructed it has this format:

user:password

Hello,
thank you for your time for Corkscrew development. Very useful tool.
Seems, that I found a small bug.
Corkscrew eats 100% of CPU when ssh server unavailable by network problems. There is happens when I receive similar error message from proxy server:
Gateway Timeout
ssh_exchange_identification: Connection closed by remote host

Seems that corkscrew trys reconnecting without any pause, causing proxy flood.

$ corkscrew --help
corkscrew 2.0 ([email protected])
From official repositoies of Ubuntu 18.04

Hi,

I get stuck in ssh proxy, appreciate for help.

1 OS platform

• macOS 13.5
• arch 6.4.10

2 corkscrew ver

2.0

3 ssh config

❯ cat .ssh/config

# my-github
Host github.com
	Hostname github.com
	IdentityFile ~/.ssh/my_github
	User [email protected]
    ProxyCommand corkscrew 127.0.0.1 7890 %h %p

4 ssh error

4.1 ssh -T

❯ ssh -T [email protected]

kex_exchange_identification: Connection closed by remote host
Connection closed by UNKNOWN port 65535

4.2 ssh -v

❯ ssh -v [email protected]

OpenSSH_9.0p1, LibreSSL 3.3.6
debug1: Reading configuration data /Users/dingrui/.ssh/config
debug1: /Users/dingrui/.ssh/config line 2: Applying options for github.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Executing proxy command: exec corkscrew 127.0.0.1 7890 github.com 22
debug1: identity file /Users/dingrui/.ssh/my_github type 0
debug1: identity file /Users/dingrui/.ssh/my_github-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.0
kex_exchange_identification: Connection closed by remote host
Connection closed by UNKNOWN port 65535

I hava no ideals on this, i'm looking forward to your suggestions or help, thanks again.

I have used the debian repo corkscrew and this github version, both give me the same results. I am attempting to ssh to port 443. Server has sshd running on port 443, and my client is using the 'ProxyCommand /opt/corkscrew/corkscrew my.domain 443 %h %p'

It is a certificated based SSH and my certs are valid and work when not trying to use corkscrew.

The ultimate error that I get is:

kex_exchange_identification: Connection closed by remote host
Connection closed by UNKNOWN port 65535

Any help would be appreciated.

Hello @bryanpkc, could you please tag the 2.0 release as imported from http://agroman.net/corkscrew/ and eventually tag a newer release with your commits? This will help the downstream distribution of the software. Thanks!

Steps to reproduce:

• Install corkscrew using brew brew install corkscrew
• Create auth file echo user@pass > auth
• Make corkscrew request: corkscrew localhost 8000 localhost 8001 auth
• Header come through like: Proxy-Authorization: Basic Q09OTkVDVCBsb2NhbGhvc3Q6ODAwMSBIVFRQLzEuMApQcm94eS1BdXRob3JpemF0aW9uOiBCYXNpYyA=
• Decoding the auth header:

base64 --decode <<< 'Q09OTkVDVCBsb2NhbGhvc3Q6ODAwMSBIVFRQLzEuMApQcm94eS1BdXRob3JpemF0aW9uOiBCYXNpYyA='
CONNECT localhost:8001 HTTP/1.0
Proxy-Authorization: Basic 

Notes

• It seems like the request headers themselves are being base64 encoded instead of the contents of the auth file.
• I built corkscrew from source and the auth works as expected. Possibly this is as simple as publishing the latest corkscrew to homebrew.

corkscrew --version
corkscrew 2.0 ([email protected])

Thank you this is very useful software for me.