oidc-agent
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liboidcagent-go
A go library for oidc-agent is available at https://github.com/indigo-dc/liboidcagent-go.
To use it in your go application include:
import "github.com/indigo-dc/liboidcagent-go"

Requesting an Access Token

The following functions can be used to obtain an access token for a specific account configuration or for a given OpenID provider from oidc-agent.

Token Request

All functions take a TokenRequest struct. This struct describes the request:
// TokenRequest is used to request an access token from the agent
type TokenRequest struct {
// ShortName that should be used (Can be omitted if IssuerURL is specified)
ShortName string
// IssuerURL for which an access token should be obtained (Can be omitted
// if ShortName is specified)
IssuerURL string
// MinValidPeriod specifies how long the access token should be valid at
// least. The time is given in seconds. Default is 0.
MinValidPeriod uint64
// The scopes for the requested access token
Scopes []string
// The audiences for the requested access token
Audiences []string
// A string describing the requesting application (i.e. its name). It might
// be displayed to the user, if the request must be confirmed or an account
// configuration loaded.
ApplicationHint string
}

GetAccessToken

func GetAccessToken(req TokenRequest) (token string, err error)
This function requests an access token from oidc-agent according to the passed TokenRequest.

Return Value

The function returns only the access token as a string and an error. To additionally obtain other information use GetTokenResponse. On failure an error is returned.

Examples

Account Configuration Example
A complete example can look the following:
token, err := liboidcagent.GetAccessToken(liboidcagent.TokenRequest{
ShortName: accountName,
MinValidPeriod: 60,
Scopes: []string{"openid", "profile"},
ApplicationHint: "Example-App",
})
if err != nil {
var agentError *OIDCAgentError
if errors.As(err, &agentError) {
fmt.Printf("%s\n", agentError.ErrorWithHelp())
}
// Additional error handling
} else {
fmt.Printf("Access token is: %s\n", token)
}
Issuer Example
A complete example can look the following:
token, err := liboidcagent.GetAccessToken(liboidcagent.TokenRequest{
IssuerURL: "https://openid.example.com",
MinValidPeriod: 60,
Scopes: []string{"openid", "profile"},
ApplicationHint: "Example-App",
})
if err != nil {
var agentError *OIDCAgentError
if errors.As(err, &agentError) {
fmt.Printf("%s\n", agentError.ErrorWithHelp())
}
// Additional error handling
} else {
fmt.Printf("Access token is: %s\n", token)
}

GetTokenResponse

func GetTokenResponse(req TokenRequest) (resp TokenResponse, err error)
This function requests an access token from oidc-agent according to the passed TokenRequest.

Return Value

The function returns an TokenResponse struct that contains the requested access token, the url of the issuer that issued the token and the time when the token expires.
The values can be accessed the following way:
response, err := liboidcagent.GetTokenResponse(...)
response.Token // access token
response.Issuer // issuer url
response.ExpiresAt // expiration time

Examples

Account Configuration Example
A complete example can look the following:
resp, err := liboidcagent.GetTokenResponse(liboidcagent.TokenRequest{
ShortName: accountName,
MinValidPeriod: 60,
Audiences: []string{"https://storage.example.org"},
ApplicationHint: "Example-App",
})
if err != nil {
var agentError *OIDCAgentError
if errors.As(err, &agentError) {
fmt.Printf("%s\n", agentError.ErrorWithHelp())
}
// Additional error handling
} else {
fmt.Printf("Access token is: %s\n", resp.Token)
fmt.Printf("Issuer url is: %s\n", resp.Issuer)
fmt.Printf("The token expires at: %s\n", resp.ExpiresAt)
}
Issuer Example
A complete example can look the following:
resp, err := liboidcagent.GetTokenResponse(liboidcagent.TokenRequest{
Issuer: "https://openid.example.com",
MinValidPeriod: 60,
Audiences: []string{"https://storage.example.org"},
ApplicationHint: "Example-App",
})
if err != nil {
var agentError *OIDCAgentError
if errors.As(err, &agentError) {
fmt.Printf("%s\n", agentError.ErrorWithHelp())
}
// Additional error handling
} else {
fmt.Printf("Access token is: %s\n", resp.Token)
fmt.Printf("Issuer url is: %s\n", resp.Issuer)
fmt.Printf("The token expires at: %s\n", resp.ExpiresAt)
}

Getting Loaded Accounts

func GetLoadedAccounts() (accountNames []string, err error) {
This function requests the list of currently loaded accounts from oidc-agent.

Return Value

The function returns a list of the currently loaded accounts as a []string on success and an OIDCAgentError on failure.

Getting Configured Accounts

func GetConfiguredAccounts() (accounts []string) {
This function checks the oidc-agent directory for the configured accounts.

Return Value

The function returns a list of the configured accounts as a []string.