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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package providers | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/aws/aws-sdk-go-v2/config" | ||
| "github.com/aws/aws-sdk-go-v2/service/ecr" | ||
| "github.com/google/go-containerregistry/pkg/authn" | ||
| ) | ||
|
|
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| type ECRDetails struct { | ||
| Region string | ||
| Domain string | ||
| } | ||
|
|
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| type customKeychain struct { | ||
| authenticator authn.Authenticator | ||
| } | ||
|
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| func (kc *customKeychain) Resolve(_ authn.Resource) (authn.Authenticator, error) { | ||
| return kc.authenticator, nil | ||
| } | ||
|
|
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| func GetECRAuthKeychain(ctx context.Context, registryStr string) (authn.Keychain, error) { | ||
| ecrDetails, err := parseECRDetails(registryStr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| ecrClient, err := awsRegionalClient(ctx, ecrDetails.Region) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error loading AWS config: %w", err) | ||
| } | ||
|
|
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| authTokenOutput, err := ecrClient.GetAuthorizationToken(ctx, &ecr.GetAuthorizationTokenInput{}) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error getting ECR authorization token: %w", err) | ||
| } | ||
|
|
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| if len(authTokenOutput.AuthorizationData) == 0 { | ||
| return nil, fmt.Errorf("no authorization data received from ECR") | ||
| } | ||
|
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| authData := authTokenOutput.AuthorizationData[0] | ||
| decodedToken, err := base64.StdEncoding.DecodeString(*authData.AuthorizationToken) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error decoding authorization token: %w", err) | ||
| } | ||
|
|
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| credentials := strings.SplitN(string(decodedToken), ":", 2) | ||
| if len(credentials) != 2 { | ||
| return nil, fmt.Errorf("invalid authorization token format") | ||
| } | ||
| authConfig := authn.AuthConfig{ | ||
| Username: credentials[0], | ||
| Password: credentials[1], | ||
| } | ||
| auth := authn.FromConfig(authConfig) | ||
| return &customKeychain{authenticator: auth}, nil | ||
| } | ||
|
|
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| func IsEcrURL(url string) bool { | ||
| parts := strings.SplitN(url, ".", 5) | ||
| if len(parts) <= 3 || !strings.Contains(url, "amazonaws.com") { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
|
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| func parseECRDetails(registryStr string) (ECRDetails, error) { | ||
| parts := strings.SplitN(registryStr, ".", 5) | ||
| return ECRDetails{ | ||
| Region: parts[3], | ||
| Domain: registryStr, | ||
| }, nil | ||
| } | ||
|
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| func awsRegionalClient(ctx context.Context, region string) (*ecr.Client, error) { | ||
| cfg, err := config.LoadDefaultConfig(ctx, config.WithRegion(region)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| client := ecr.NewFromConfig(cfg) | ||
| return client, nil | ||
| } |
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