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feat: validate configuration on startup, fail fast on bad config (closes #52) #53

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sneak merged 11 commits from feature/config-validation into main 2026-08-07 22:39:40 +02:00
Conversation 6 Commits 11 Files Changed 4 +4 -3
1 changed files with 4 additions and 3 deletions
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7
internal/config/config.go
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@@ -262,15 +262,16 @@ func (c *Config) ensureStateDirWritable() error {
// validate checks that all required configuration values are set and // validate checks that all required configuration values are set and
// that every value is within its valid range. // that every value is within its valid range.
func (c *Config) validate() error { func (c *Config) validate() error {
// The signing key value is never echoed in error messages.
if c.SigningKey == "" { if c.SigningKey == "" {
return fmt.Errorf("signing_key is required") return fmt.Errorf("config key %q: a value is required", "signing_key")
} }
// Minimum key length for security (32 bytes = 256 bits) // Minimum key length for security (32 bytes = 256 bits)
const minKeyLength = 32 const minKeyLength = 32
if len(c.SigningKey) < minKeyLength { if len(c.SigningKey) < minKeyLength {
return fmt.Errorf("signing_key must be at least %d characters, got %d", return fmt.Errorf("config key %q: value must be at least %d characters, got %d",
minKeyLength, len(c.SigningKey)) "signing_key", minKeyLength, len(c.SigningKey))
} }
const maxPort = 65535 const maxPort = 65535