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feat: add GitHub team allowlist configuration option #1694

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merged 5 commits into from
Dec 22, 2021

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paulerickson
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@paulerickson paulerickson commented Jul 7, 2021

Summary

Configure permissions by GitHub team, with a list of teams and commands they are permitted to use.

Usage

atlantis server --gh-team-allowlist "myteam:plan, secteam:apply"

Background

This change is intended to replace #1206.
The code is the same, so all credit/blame goes to @jamengual & co-authors—I have only squashed those 75 revisions down to one, rebased on master, and resolved a few minor conflicts & incompatibilities.

@paulerickson paulerickson requested a review from a team as a code owner July 7, 2021 19:56
@chenrui333 chenrui333 changed the title Add GitHub team allowlist configuration option feat: add GitHub team allowlist configuration option Jul 7, 2021
@msarvar
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msarvar commented Jul 13, 2021

@paulerickson hey, thanks for updating the PR. Original PR had quite a bit of comments seems like code stayed largely the same, would you be able to address the feedback from there? Comments are largely around moving the functionality into command runner and possibly moving the flag into server config.

@majormoses
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I'd also like to ask that we consider the security implications of default allowing all teams to perform all actions. Maybe we should require people to set this and refuse any commands from users unless they are authorized? Regarding the moving of team allowlists around I think it should be controlled serverside in a config. I am wondering however if maybe it should even be configurable on a per repository basis. For example I might have a repository used to bootstrap new aws accounts into my organization and because of the required privileges this comes with we want it locked down to as few people as possible while others can be utilized by larger groups of people. Currently our threat model shows that the most critical points to cover currently due to lack of controls (which this helps build) is the repository itself and the verification of the payloads from Github webhook.

@paulerickson
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So sorry for the lack of updates! I fixed up a couple of things, but got stuck with server config, which was not so obvious to me. I have rebased again and am taking another crack at it now.

@paulerickson
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@msarvar can you clarify whether this comment was already addressed or else what change is being suggested?

Have you considered moving the flag to server config? It might be easier to manage that way. You will also get unmarshaling through server config. It should also remove the need for string parsing that you have to do https://github.com/runatlantis/atlantis/pull/1206/files#diff-6d78b261a5a26bea8298bc9de21e6460e101e2cbc14f0ad282e2415006d0b760R23.

The new flag is already defined in server.go, and the string parsing mirrors that of the similar flag --repo-allowlist; I'm not sure where else parsing should be done.

@paulerickson
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I have moved the permissions check from event handler to command runner, which I think someone requested: b8fce3a

Comment on lines 40 to 41
t := strings.TrimSpace(team)
c := strings.TrimSpace(command)
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I don't think this necessary, is there a reason for this trimming?

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Not that I can see. Removed in fbcd74f

// IsCommandAllowedForAnyTeam returns true if any of the teams is allowed to execute the command
// and false otherwise.
func (checker *TeamAllowlistChecker) IsCommandAllowedForAnyTeam(teams []string, command string) bool {
c := strings.TrimSpace(command)
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same here

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Equals(t, true, checker.IsCommandAllowedForAnyTeam(teams, `plan`))
Equals(t, true, checker.IsCommandAllowedForAnyTeam(teams, `release`))
Equals(t, false, checker.IsCommandAllowedForAnyTeam(teams, `noop`))
}
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Let's add some tests for wildcard as well.

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Added in 23c5cd9

}
for _, t := range teams {
membership, _, err := g.client.Teams.GetTeamMembershipBySlug(g.ctx, org, *t.Slug, user.Username)
if err == nil && membership != nil {
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We should return if there is an error or at least log the error.

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I logged it here: ac049ea

I think continuing with no groups is a simple way to handle it unless we can retry or do some better handling in a higher layer

for {
teams, resp, err := g.client.Teams.ListTeams(g.ctx, org, opts)
if err != nil {
return nil, err
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Let's wrap the error here. Something like `errors.Wrap(err, "retrieving github teams")

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addressed in ac049ea

@msarvar
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msarvar commented Nov 17, 2021

@paulerickson Hey, pr looks good. Left couple comments, let me know what you think

@paulerickson
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@paulerickson Hey, pr looks good. Left couple comments, let me know what you think

Thanks, @msarvar. I think I've addressed everything, and rebased from master

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Looks good, thanks for contributing!

@msarvar msarvar merged commit bc36846 into runatlantis:master Dec 22, 2021
@osterman
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Relates to #308

chenrui333 added a commit that referenced this pull request Dec 30, 2021
…-test-job

* 'master' of github.com:runatlantis/atlantis: (79 commits)
  release: 0.18.0 (#1965)
  feat: streaming terraform logs in real-time (#1937)
  build(deps): bump github.com/hashicorp/go-getter from 1.5.9 to 1.5.10 (#1961)
  docs: update website links (#1964)
  docs: clarify example for `--azuredevops-token` flag (#1712)
  docs: typo in heading level (#1960)
  fix: fallback to default TF version in apply step (#1931)
  feat: add GitHub team allowlist configuration option (#1694)
  Add in Dockerfile support for last Terraform 1.0.x version in AVAILABLE_TERRAFORM_VERSIONS (#1957)
  build(deps): bump github.com/spf13/viper from 1.10.0 to 1.10.1 (#1956)
  deps: terraform 1.1.2 (#1952)
  release: 0.17.6 (#1947)
  docker: make multi-platform atlantis image (#1943)
  docker(testing): fix arch ref for `linux/arm/v7`
  docker(testing): updating image build process
  docs: fix policy check documentation examples (#1945)
  build: make multi-platform image for testing-env
  atlantis-base: fix context
  atalntis-base: update platforms and path trigger
  atlantis-base: update platforms
  ...
return nil, errors.Wrap(err, "retrieving GitHub teams")
}
for _, t := range teams {
membership, _, err := g.client.Teams.GetTeamMembershipBySlug(g.ctx, org, *t.Slug, user.Username)
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@albertorm95 albertorm95 Jan 4, 2022

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What about the rate limiting? Wound't it be better to use the GraphQL so we could just pull the orgs teams of a user?

https://docs.github.com/en/rest/overview/resources-in-the-rest-api#rate-limiting

--- edit:
https://stackoverflow.com/questions/30466741/github-api-list-a-users-teams-within-an-organization/47538467#47538467 👀

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👍 I haven't worked with the GraphQL API, but it does seem like some calls could be saved that way

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@paulerickson Thanks for the answer I could try to switch this feature to use GraphQL :)

@paulerickson paulerickson deleted the github_team_allowlist_config branch January 4, 2022 17:57
@marcportabellaclotet-mt
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It would be great if it had project based allowance.
In our case, we are using monorepo approach to store terraform configs and it would be interesting if we could allow gh teams to specific projects.

Somehing like :

--gh-team-allowlist "{ghteam}:{project}:{command}"

Thanks for your work!

@nitrocode
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@marcportabellaclotet-mt please open a new issue for that. Sounds like a good idea.

@marcportabellaclotet-mt

@nitrocode done

krrrr38 pushed a commit to krrrr38/atlantis that referenced this pull request Dec 16, 2022
* Add GitHub team allowlist configuration option

Co-authored-by: PePe (Jose) Amengual <[email protected]>
Co-authored-by: Troy Neeriemer <[email protected]>
Co-authored-by: Ted Roby <[email protected]>
Co-authored-by: Paul Erickson <[email protected]>

* Check team allowlist in command runner, rather than event controller

* Remove unneeded trimming

* Test wildcard groups and commands

* Improve error logging

Co-authored-by: PePe (Jose) Amengual <[email protected]>
Co-authored-by: Troy Neeriemer <[email protected]>
Co-authored-by: Ted Roby <[email protected]>
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8 participants