fix(signing): explicitly fetch GitHub OIDC token for Sigstore#252
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fix(signing): explicitly fetch GitHub OIDC token for Sigstore#252
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Sigstore-go does not automatically fetch GitHub OIDC tokens from environment variables. This commit adds explicit token fetching logic to resolve signing failures in GitHub Actions. Changes: - Add fetchGitHubOIDCToken() to fetch token from GitHub OIDC endpoint - Update signProvenanceWithSigstore() to use fetched token explicitly - Add comprehensive unit tests for token fetching with error scenarios - Use context-aware HTTP requests with 30s timeout Fixes signing failures where Sigstore expected an explicit IDToken instead of auto-discovering from ACTIONS_ID_TOKEN_REQUEST_* env vars. Co-authored-by: Ona <no-reply@ona.com>
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- Remove unused getEnvOrDefault function - Add blank identifier assignments for unchecked error returns in test file Co-authored-by: Ona <no-reply@ona.com>
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Description
Fixes Sigstore signing failure caused by missing OIDC token provisioning.
Fixes Sigstore signing failure caused by missing OIDC token provisioning.
Problem: The
sigstore-golibrary requires an explicit JWT token inCertificateProviderOptions.IDToken, but Leeway was passing an empty struct, assuming the library would auto-fetch from GitHub Actions environment variables.Solution: Implemented
fetchGitHubOIDCToken()to explicitly retrieve the OIDC token from GitHub Actions using theACTIONS_ID_TOKEN_REQUEST_TOKENandACTIONS_ID_TOKEN_REQUEST_URLenvironment variables withaudience=sigstore.Changes:
fetchGitHubOIDCToken()function to fetch JWT from GitHub OIDC providersignSLSAAttestation()to call token fetching before Fulcio certificate requestRelated Issue(s)
Fixes https://linear.app/ona-team/issue/CLC-1959/create-leeway-signing-command
How to test
go test -v ./pkg/leeway/signing/... -run TestFetchGitHubOIDCTokenDocumentation
No - Internal Leeway implementation fix, no user-facing documentation changes required.