feat: Add allow everyone option to GitHub OAuth2 logins (#5086)

* feat: Add allow everyone option for GitHub OAuth

* fix: Detect team when multiple orgs are present

Co-authored-by: 李董睿煊 <dongruixuan@hotmail.com>

cli/deployment/config.go

@@ -185,6 +185,11 @@ func newConfig() *codersdk.DeploymentConfig {
 					Usage: "Whether new users can sign up with GitHub.",
 					Flag:  "oauth2-github-allow-signups",
 				},
+				AllowEveryone: &codersdk.DeploymentConfigField[bool]{
+					Name:  "OAuth2 GitHub Allow Everyone",
+					Usage: "Allow all logins, setting this option means allowed orgs and teams must be empty.",
+					Flag:  "oauth2-github-allow-everyone",
+				},
 				EnterpriseBaseURL: &codersdk.DeploymentConfigField[string]{
 					Name:  "OAuth2 GitHub Enterprise Base URL",
 					Usage: "Base URL of a GitHub Enterprise deployment to use for Login with GitHub.",

cli/server.go

@@ -375,6 +375,7 @@ func Server(vip *viper.Viper, newAPI func(context.Context, *coderd.Options) (*co
 					cfg.OAuth2.Github.ClientID.Value,
 					cfg.OAuth2.Github.ClientSecret.Value,
 					cfg.OAuth2.Github.AllowSignups.Value,
+					cfg.OAuth2.Github.AllowEveryone.Value,
 					cfg.OAuth2.Github.AllowedOrgs.Value,
 					cfg.OAuth2.Github.AllowedTeams.Value,
 					cfg.OAuth2.Github.EnterpriseBaseURL.Value,
@@ -1062,11 +1063,21 @@ func configureTLS(tlsMinVersion, tlsClientAuth string, tlsCertFiles, tlsKeyFiles
 	return tlsConfig, nil
 }
 
-func configureGithubOAuth2(accessURL *url.URL, clientID, clientSecret string, allowSignups bool, allowOrgs []string, rawTeams []string, enterpriseBaseURL string) (*coderd.GithubOAuth2Config, error) {
+//nolint:revive // Ignore flag-parameter: parameter 'allowEveryone' seems to be a control flag, avoid control coupling (revive)
+func configureGithubOAuth2(accessURL *url.URL, clientID, clientSecret string, allowSignups, allowEveryone bool, allowOrgs []string, rawTeams []string, enterpriseBaseURL string) (*coderd.GithubOAuth2Config, error) {
 	redirectURL, err := accessURL.Parse("/api/v2/users/oauth2/github/callback")
 	if err != nil {
 		return nil, xerrors.Errorf("parse github oauth callback url: %w", err)
 	}
+	if allowEveryone && len(allowOrgs) > 0 {
+		return nil, xerrors.New("allow everyone and allowed orgs cannot be used together")
+	}
+	if allowEveryone && len(rawTeams) > 0 {
+		return nil, xerrors.New("allow everyone and allowed teams cannot be used together")
+	}
+	if !allowEveryone && len(allowOrgs) == 0 {
+		return nil, xerrors.New("allowed orgs is empty: must specify at least one org or allow everyone")
+	}
 	allowTeams := make([]coderd.GithubOAuth2Team, 0, len(rawTeams))
 	for _, rawTeam := range rawTeams {
 		parts := strings.SplitN(rawTeam, "/", 2)
@@ -1118,6 +1129,7 @@ func configureGithubOAuth2(accessURL *url.URL, clientID, clientSecret string, al
 			},
 		},
 		AllowSignups:       allowSignups,
+		AllowEveryone:      allowEveryone,
 		AllowOrganizations: allowOrgs,
 		AllowTeams:         allowTeams,
 		AuthenticatedUser: func(ctx context.Context, client *http.Client) (*github.User, error) {

cli/server_test.go

@@ -608,6 +608,7 @@ func TestServer(t *testing.T) {
 			"--in-memory",
 			"--address", ":0",
 			"--access-url", "http://example.com",
+			"--oauth2-github-allow-everyone",
 			"--oauth2-github-client-id", "fake",
 			"--oauth2-github-client-secret", "fake",
 			"--oauth2-github-enterprise-base-url", fakeRedirect,

cli/testdata/coder_server_--help.golden

@@ -65,6 +65,10 @@ Flags:
                                                      production.
                                                      Consumes $CODER_EXPERIMENTAL
   -h, --help                                         help for server
+      --oauth2-github-allow-everyone                 Allow all logins, setting this option
+                                                     means allowed orgs and teams must be
+                                                     empty.
+                                                     Consumes $CODER_OAUTH2_GITHUB_ALLOW_EVERYONE
       --oauth2-github-allow-signups                  Whether new users can sign up with
                                                      GitHub.
                                                      Consumes $CODER_OAUTH2_GITHUB_ALLOW_SIGNUPS

coderd/userauth.go

@@ -38,6 +38,7 @@ type GithubOAuth2Config struct {
 	TeamMembership              func(ctx context.Context, client *http.Client, org, team, username string) (*github.Membership, error)
 
 	AllowSignups       bool
+	AllowEveryone      bool
 	AllowOrganizations []string
 	AllowTeams         []GithubOAuth2Team
 }
@@ -57,6 +58,10 @@ func (api *API) userOAuth2Github(rw http.ResponseWriter, r *http.Request) {
 	)
 
 	oauthClient := oauth2.NewClient(ctx, oauth2.StaticTokenSource(state.Token))
+
+	var selectedMemberships []*github.Membership
+	var organizationNames []string
+	if !api.GithubOAuth2Config.AllowEveryone {
 		memberships, err := api.GithubOAuth2Config.ListOrganizationMemberships(ctx, oauthClient)
 		if err != nil {
 			httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
@@ -65,7 +70,7 @@ func (api *API) userOAuth2Github(rw http.ResponseWriter, r *http.Request) {
 			})
 			return
 		}
-	var selectedMembership *github.Membership
+
 		for _, membership := range memberships {
 			if membership.GetState() != "active" {
 				continue
@@ -74,16 +79,18 @@ func (api *API) userOAuth2Github(rw http.ResponseWriter, r *http.Request) {
 				if *membership.Organization.Login != allowed {
 					continue
 				}
-			selectedMembership = membership
+				selectedMemberships = append(selectedMemberships, membership)
+				organizationNames = append(organizationNames, membership.Organization.GetLogin())
 				break
 			}
 		}
-	if selectedMembership == nil {
+		if len(selectedMemberships) == 0 {
 			httpapi.Write(ctx, rw, http.StatusUnauthorized, codersdk.Response{
 				Message: "You aren't a member of the authorized Github organizations!",
 			})
 			return
 		}
+	}
 
 	ghUser, err := api.GithubOAuth2Config.AuthenticatedUser(ctx, oauthClient)
 	if err != nil {
@@ -95,9 +102,13 @@ func (api *API) userOAuth2Github(rw http.ResponseWriter, r *http.Request) {
 	}
 
 	// The default if no teams are specified is to allow all.
-	if len(api.GithubOAuth2Config.AllowTeams) > 0 {
+	if !api.GithubOAuth2Config.AllowEveryone && len(api.GithubOAuth2Config.AllowTeams) > 0 {
 		var allowedTeam *github.Membership
 		for _, allowTeam := range api.GithubOAuth2Config.AllowTeams {
+			if allowedTeam != nil {
+				break
+			}
+			for _, selectedMembership := range selectedMemberships {
 				if allowTeam.Organization != *selectedMembership.Organization.Login {
 					// This needs to continue because multiple organizations
 					// could exist in the allow/team listings.
@@ -110,9 +121,10 @@ func (api *API) userOAuth2Github(rw http.ResponseWriter, r *http.Request) {
 					continue
 				}
 			}
+		}
 		if allowedTeam == nil {
 			httpapi.Write(ctx, rw, http.StatusUnauthorized, codersdk.Response{
-				Message: fmt.Sprintf("You aren't a member of an authorized team in the %s Github organization!", *selectedMembership.Organization.Login),
+				Message: fmt.Sprintf("You aren't a member of an authorized team in the %v Github organization(s)!", organizationNames),
 			})
 			return
 		}

coderd/userauth_test.go

@@ -318,6 +318,124 @@ func TestUserOAuth2Github(t *testing.T) {
 		resp := oauth2Callback(t, client)
 		require.Equal(t, http.StatusTemporaryRedirect, resp.StatusCode)
 	})
+	t.Run("SignupAllowedTeamInFirstOrganization", func(t *testing.T) {
+		t.Parallel()
+		client := coderdtest.New(t, &coderdtest.Options{
+			GithubOAuth2Config: &coderd.GithubOAuth2Config{
+				AllowSignups:       true,
+				AllowOrganizations: []string{"coder", "nil"},
+				AllowTeams:         []coderd.GithubOAuth2Team{{"coder", "backend"}},
+				OAuth2Config:       &oauth2Config{},
+				ListOrganizationMemberships: func(ctx context.Context, client *http.Client) ([]*github.Membership, error) {
+					return []*github.Membership{
+						{
+							State: &stateActive,
+							Organization: &github.Organization{
+								Login: github.String("coder"),
+							},
+						},
+						{
+							State: &stateActive,
+							Organization: &github.Organization{
+								Login: github.String("nil"),
+							},
+						},
+					}, nil
+				},
+				TeamMembership: func(ctx context.Context, client *http.Client, org, team, username string) (*github.Membership, error) {
+					return &github.Membership{}, nil
+				},
+				AuthenticatedUser: func(ctx context.Context, client *http.Client) (*github.User, error) {
+					return &github.User{
+						Login: github.String("mathias"),
+					}, nil
+				},
+				ListEmails: func(ctx context.Context, client *http.Client) ([]*github.UserEmail, error) {
+					return []*github.UserEmail{{
+						Email:    github.String("mathias@coder.com"),
+						Verified: github.Bool(true),
+						Primary:  github.Bool(true),
+					}}, nil
+				},
+			},
+		})
+		resp := oauth2Callback(t, client)
+		require.Equal(t, http.StatusTemporaryRedirect, resp.StatusCode)
+	})
+	t.Run("SignupAllowedTeamInSecondOrganization", func(t *testing.T) {
+		t.Parallel()
+		client := coderdtest.New(t, &coderdtest.Options{
+			GithubOAuth2Config: &coderd.GithubOAuth2Config{
+				AllowSignups:       true,
+				AllowOrganizations: []string{"coder", "nil"},
+				AllowTeams:         []coderd.GithubOAuth2Team{{"nil", "null"}},
+				OAuth2Config:       &oauth2Config{},
+				ListOrganizationMemberships: func(ctx context.Context, client *http.Client) ([]*github.Membership, error) {
+					return []*github.Membership{
+						{
+							State: &stateActive,
+							Organization: &github.Organization{
+								Login: github.String("coder"),
+							},
+						},
+						{
+							State: &stateActive,
+							Organization: &github.Organization{
+								Login: github.String("nil"),
+							},
+						},
+					}, nil
+				},
+				TeamMembership: func(ctx context.Context, client *http.Client, org, team, username string) (*github.Membership, error) {
+					return &github.Membership{}, nil
+				},
+				AuthenticatedUser: func(ctx context.Context, client *http.Client) (*github.User, error) {
+					return &github.User{
+						Login: github.String("mathias"),
+					}, nil
+				},
+				ListEmails: func(ctx context.Context, client *http.Client) ([]*github.UserEmail, error) {
+					return []*github.UserEmail{{
+						Email:    github.String("mathias@coder.com"),
+						Verified: github.Bool(true),
+						Primary:  github.Bool(true),
+					}}, nil
+				},
+			},
+		})
+		resp := oauth2Callback(t, client)
+		require.Equal(t, http.StatusTemporaryRedirect, resp.StatusCode)
+	})
+	t.Run("SignupAllowEveryone", func(t *testing.T) {
+		t.Parallel()
+		client := coderdtest.New(t, &coderdtest.Options{
+			GithubOAuth2Config: &coderd.GithubOAuth2Config{
+				AllowSignups:  true,
+				AllowEveryone: true,
+				OAuth2Config:  &oauth2Config{},
+				ListOrganizationMemberships: func(ctx context.Context, client *http.Client) ([]*github.Membership, error) {
+					return []*github.Membership{}, nil
+				},
+				TeamMembership: func(ctx context.Context, client *http.Client, org, team, username string) (*github.Membership, error) {
+					return nil, xerrors.New("no teams")
+				},
+				AuthenticatedUser: func(ctx context.Context, client *http.Client) (*github.User, error) {
+					return &github.User{
+						Login: github.String("mathias"),
+					}, nil
+				},
+				ListEmails: func(ctx context.Context, client *http.Client) ([]*github.UserEmail, error) {
+					return []*github.UserEmail{{
+						Email:    github.String("mathias@coder.com"),
+						Verified: github.Bool(true),
+						Primary:  github.Bool(true),
+					}}, nil
+				},
+			},
+		})
+		resp := oauth2Callback(t, client)
+		require.Equal(t, http.StatusTemporaryRedirect, resp.StatusCode)
+	})
 	t.Run("SignupFailedInactiveInOrg", func(t *testing.T) {
 		t.Parallel()
 		client := coderdtest.New(t, &coderdtest.Options{

codersdk/deploymentconfig.go

@@ -81,6 +81,7 @@ type OAuth2GithubConfig struct {
 	AllowedOrgs       *DeploymentConfigField[[]string] `json:"allowed_orgs" typescript:",notnull"`
 	AllowedTeams      *DeploymentConfigField[[]string] `json:"allowed_teams" typescript:",notnull"`
 	AllowSignups      *DeploymentConfigField[bool]     `json:"allow_signups" typescript:",notnull"`
+	AllowEveryone     *DeploymentConfigField[bool]     `json:"allow_everyone" typescript:",notnull"`
 	EnterpriseBaseURL *DeploymentConfigField[string]   `json:"enterprise_base_url" typescript:",notnull"`
 }
 

site/src/api/typesGenerated.ts

@@ -433,6 +433,7 @@ export interface OAuth2GithubConfig {
   readonly allowed_orgs: DeploymentConfigField<string[]>
   readonly allowed_teams: DeploymentConfigField<string[]>
   readonly allow_signups: DeploymentConfigField<boolean>
+  readonly allow_everyone: DeploymentConfigField<boolean>
   readonly enterprise_base_url: DeploymentConfigField<string>
 }