Without this patch, the setting SSH.StartBuiltinServer decides whether
the native (Go) implementation is used rather than calling 'ssh-keygen'.
It's possible for 'using ssh-keygen' and 'using the built-in server' to
be independent.
In fact, the gitea rootless container doesn't ship ssh-keygen and can be
configured to use the host's SSH server - which will cause the public
key parsing mechanism to break.
This commit changes the decision to be based on SSH.KeygenPath instead.
Any existing configurations with a custom KeygenPath set will continue
to function. The new default value of '' selects the native version. The
downside of this approach is that anyone who has relying on plain
'ssh-keygen' to have special properties will now be using the native
version instead.
I assume the exec-variant is only there because /x/crypto/ssh didn't
support ssh-ed25519 until 2016. I don't see any other reason for using
it so it might be an acceptable risk.
Fixes#23363
EDIT: this message was garbled when I tried to get the commit
description back in.. Trying to reconstruct it:
## ⚠️ BREAKING ⚠️ Users who don't have SSH.KeygenPath
explicitly set and rely on the ssh-keygen binary need to set
SSH.KeygenPath to 'ssh-keygen' in order to be able to continue using it
for public key parsing.
There was something else but I can't remember at the moment.
EDIT2: It was about `make test` and `make lint`. Can't get them to run.
To reproduce the issue, I installed `golang` in `docker.io/node:16` and
got:
```
...
go: mvdan.cc/xurls/v2@v2.4.0: unknown revision mvdan.cc/xurls/v2.4.0
go: gotest.tools/v3@v3.4.0: unknown revision gotest.tools/v3.4.0
...
go: gotest.tools/v3@v3.0.3: unknown revision gotest.tools/v3.0.3
...
go: error loading module requirements
```
Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
- Don't use `ioutil` package anymore as it doesn't anything special
anymore since Go 1.16:
```
// As of Go 1.16, the same functionality is now provided
// by package io or package os, and those implementations
// should be preferred in new code.
```
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
* Add support for ssh commit signing
* Split out ssh verification to separate file
* Show ssh key fingerprint on commit page
* Update sshsig lib
* Make sure we verify against correct namespace
* Add ssh public key verification via ssh signatures
When adding a public ssh key also validate that this user actually
owns the key by signing a token with the private key.
* Remove some gpg references and make verify key optional
* Fix spaces indentation
* Update options/locale/locale_en-US.ini
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Update templates/user/settings/keys_ssh.tmpl
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Update options/locale/locale_en-US.ini
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Update options/locale/locale_en-US.ini
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Update models/ssh_key_commit_verification.go
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Reword ssh/gpg_key_success message
* Change Badsignature to NoKeyFound
* Add sign/verify tests
* Fix upstream api changes to user_model User
* Match exact on SSH signature
* Fix code review remarks
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
* Move keys to models/keys
* Rename models/keys -> models/asymkey
* change the missed package name
* Fix package alias
* Fix test
* Fix docs
* Fix test
* Fix test
* merge
* Improve install code to avoid low-level mistakes.
If a user tries to do a re-install in a Gitea database, they gets a warning and double check.
When Gitea runs, it never create empty app.ini automatically.
Also some small (related) refactoring:
* Refactor db.InitEngine related logic make it more clean (especially for the install code)
* Move some i18n strings out from setting.go to make the setting.go can be easily maintained.
* Show errors in CLI code if an incorrect app.ini is used.
* APP_DATA_PATH is created when installing, and checked when starting (no empty directory is created any more).
* Add support for ed25519_sk and ecdsa_sk SSH keys
These start with sk-ssh-ed25519@openssh.com and sk-ecdsa-sha2-nistp256@openssh.com.
They are supported in recent versions of go x/crypto/ssh and OpenSSH 8.2
or higher.
* skip ssh-keygen
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Andrew Thornton <art27@cantab.net>
* Disable DSA ssh keys by default
OpenSSH has disabled DSA keys since version 7.0
As the docker runs openssh > v7.0 we should just disable
DSA keys by default.
Refers to #11417
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Just disable DSA keys by default
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Appears we need to set the minimum key sizes too
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Appears we need to set the minimum key sizes too
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Remove DSA type
* Fix Tests
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
Avoid out of bounds error by using strings.HasPrefix to check for
starting SSH2 text rather than assuming user input has at least 31
characters.
Add tests for bad input as well.
Fixes#8800
* Strip newlines from SSH keys before adding them
Fixes: https://github.com/go-gitea/gitea/issues/7500
* add test for CheckPublicKeyString
* add one more test
* simplify test
* further simplify
* make fmt
* Use go method to calculate key fingerprint
* add gitea copyright
* use native go method only for built-in server
* refactor and add tests
* add gitea copyright
The old API was using []byte, but was changed to string without running
the tests again.
It also sets the variables from the configuration to make them work.
Maybe there is a better way to do this.
This commit adds the possibibility to use either the native golang
libraries or ssh-keygen to check public keys. The check is adjusted
depending on the settings, so that only supported keys are let through.
This commit also brings back the blacklist feature, which was removed in
7ef9a05588. This allows to blacklist
algorythms or keys based on the key length. This works with the native
and the ssh-keygen way.
Because of #2179 it also includes a way to adjust the path to
ssh-keygen and the working directory for ssh-keygen. With this,
sysadmins should be able to adjust the settings in a way, that SELinux
is okay with it. In the worst case, they can switch to the native
implementation and only loose support for ed25519 keys at the moment.
There are some other places which need adjustment to utilize the
parameters and the native implementation, but this sets the ground work.
Leon Busch-George
flynnnnnnnnnn
Wim
Gusted
Lunny Xiao
wxiaoguang
Artemis Tosini
zeripath
mrsdizzie
silverwind
Antoine GIRARD
Ethan Koenig
Sandro Santilli
Rémy Boulanouar
Unknwon
Gibheer