backend/azurerm: add support for generic OIDC authentication

go.mod

@@ -31,7 +31,7 @@ require (
 	github.com/hashicorp/consul/api v1.9.1
 	github.com/hashicorp/consul/sdk v0.8.0
 	github.com/hashicorp/errwrap v1.1.0
-	github.com/hashicorp/go-azure-helpers v0.31.1
+	github.com/hashicorp/go-azure-helpers v0.43.0
 	github.com/hashicorp/go-checkpoint v0.5.0
 	github.com/hashicorp/go-cleanhttp v0.5.2
 	github.com/hashicorp/go-getter v1.6.2

go.sum

@@ -330,8 +330,8 @@ github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brv
 github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
 github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-azure-helpers v0.12.0/go.mod h1:Zc3v4DNeX6PDdy7NljlYpnrdac1++qNW0I4U+ofGwpg=
-github.com/hashicorp/go-azure-helpers v0.31.1 h1:lgwZLcyMheoLUj7dJfsrsa7ZpRvOIbsfFhttLi6ml78=
-github.com/hashicorp/go-azure-helpers v0.31.1/go.mod h1:gcutZ/Hf/O7YN9M3UIvyZ9l0Rxv7Yrc9x5sSfM9cuSw=
+github.com/hashicorp/go-azure-helpers v0.43.0 h1:larj4ZgwO3hKzA9xIOTXRW4NBpI6F3K8wpig8eikNOw=
+github.com/hashicorp/go-azure-helpers v0.43.0/go.mod h1:ofh+59GPB8g/lWI08711STfrIPSPOlXQkuMc8rovpBk=
 github.com/hashicorp/go-checkpoint v0.5.0 h1:MFYpPZCnQqQTE18jFwSII6eUQrD/oxMFp3mlgcqk5mU=
 github.com/hashicorp/go-checkpoint v0.5.0/go.mod h1:7nfLNL10NsxqO4iWuW6tWW0HjZuDrwkBuEQsVcpCOgg=
 github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=

internal/backend/remote-state/azure/arm_client.go

@@ -81,6 +81,8 @@ func buildArmClient(ctx context.Context, config BackendConfig) (*ArmClient, erro
 		MsiEndpoint: config.MsiEndpoint,
 
 		// OIDC
+		IDToken:             config.OIDCToken,
+		IDTokenFilePath:     config.OIDCTokenFilePath,
 		IDTokenRequestURL:   config.OIDCRequestURL,
 		IDTokenRequestToken: config.OIDCRequestToken,
 

internal/backend/remote-state/azure/backend.go

@@ -142,19 +142,29 @@ func New() backend.Backend {
 				DefaultFunc: schema.EnvDefaultFunc("ARM_USE_OIDC", false),
 				Description: "Allow OIDC to be used for authentication",
 			},
-
+			"oidc_token": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				DefaultFunc: schema.EnvDefaultFunc("ARM_OIDC_TOKEN", ""),
+				Description: "A generic JWT token that can be used for OIDC authentication. Should not be used in conjunction with `oidc_request_token`.",
+			},
+			"oidc_token_file_path": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				DefaultFunc: schema.EnvDefaultFunc("ARM_OIDC_TOKEN_FILE_PATH", ""),
+				Description: "Path to file containing a generic JWT token that can be used for OIDC authentication. Should not be used in conjunction with `oidc_request_token`.",
+			},
 			"oidc_request_url": {
 				Type:        schema.TypeString,
 				Optional:    true,
 				DefaultFunc: schema.MultiEnvDefaultFunc([]string{"ARM_OIDC_REQUEST_URL", "ACTIONS_ID_TOKEN_REQUEST_URL"}, ""),
-				Description: "The URL for the OIDC provider from which to request an ID token",
+				Description: "The URL of the OIDC provider from which to request an ID token. Needs to be used in conjunction with `oidc_request_token`. This is meant to be used for Github Actions.",
 			},
-
 			"oidc_request_token": {
 				Type:        schema.TypeString,
 				Optional:    true,
 				DefaultFunc: schema.MultiEnvDefaultFunc([]string{"ARM_OIDC_REQUEST_TOKEN", "ACTIONS_ID_TOKEN_REQUEST_TOKEN"}, ""),
-				Description: "The bearer token for the request to the OIDC provider",
+				Description: "The bearer token to use for the request to the OIDC providers `oidc_request_url` URL to fetch an ID token. Needs to be used in conjunction with `oidc_request_url`. This is meant to be used for Github Actions.",
 			},
 
 			// Feature Flags
@@ -197,6 +207,8 @@ type BackendConfig struct {
 	MetadataHost                  string
 	Environment                   string
 	MsiEndpoint                   string
+	OIDCToken                     string
+	OIDCTokenFilePath             string
 	OIDCRequestURL                string
 	OIDCRequestToken              string
 	ResourceGroupName             string
@@ -230,6 +242,8 @@ func (b *Backend) configure(ctx context.Context) error {
 		MetadataHost:                  data.Get("metadata_host").(string),
 		Environment:                   data.Get("environment").(string),
 		MsiEndpoint:                   data.Get("msi_endpoint").(string),
+		OIDCToken:                     data.Get("oidc_token").(string),
+		OIDCTokenFilePath:             data.Get("oidc_token_file_path").(string),
 		OIDCRequestURL:                data.Get("oidc_request_url").(string),
 		OIDCRequestToken:              data.Get("oidc_request_token").(string),
 		ResourceGroupName:             data.Get("resource_group_name").(string),

website/docs/language/settings/backends/azurerm.mdx

@@ -273,6 +273,10 @@ When authenticating using a Service Principal with OpenID Connect (OIDC) - the f
 
 * `oidc_request_token` - (Optional) The bearer token for the request to the OIDC provider. This can also be sourced from the `ARM_OIDC_REQUEST_TOKEN` or `ACTIONS_ID_TOKEN_REQUEST_TOKEN` environment variables.
 
+* `oidc_token` - (Optional) The ID token when authenticating using OpenID Connect (OIDC). This can also be sourced from the `ARM_OIDC_TOKEN` environment variable.
+
+* `oidc_token_file_path` - (Optional) The path to a file containing an ID token when authenticating using OpenID Connect (OIDC). This can also be sourced from the `ARM_OIDC_TOKEN_FILE_PATH` environment variable.
+
 * `use_oidc` - (Optional) Should OIDC authentication be used? This can also be sourced from the `ARM_USE_OIDC` environment variable.
 
 ***