diff options
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/trace/tracestate.go')
| -rw-r--r-- | vendor/go.opentelemetry.io/otel/trace/tracestate.go | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/vendor/go.opentelemetry.io/otel/trace/tracestate.go b/vendor/go.opentelemetry.io/otel/trace/tracestate.go index ca68a82e5..d1e47ca2f 100644 --- a/vendor/go.opentelemetry.io/otel/trace/tracestate.go +++ b/vendor/go.opentelemetry.io/otel/trace/tracestate.go @@ -28,9 +28,9 @@ const ( // based on the W3C Trace Context specification, see // https://www.w3.org/TR/trace-context-1/#tracestate-header - noTenantKeyFormat = `[a-z][_0-9a-z\-\*\/]{0,255}` - withTenantKeyFormat = `[a-z0-9][_0-9a-z\-\*\/]{0,240}@[a-z][_0-9a-z\-\*\/]{0,13}` - valueFormat = `[\x20-\x2b\x2d-\x3c\x3e-\x7e]{0,255}[\x21-\x2b\x2d-\x3c\x3e-\x7e]` + noTenantKeyFormat = `[a-z][_0-9a-z\-\*\/]*` + withTenantKeyFormat = `[a-z0-9][_0-9a-z\-\*\/]*@[a-z][_0-9a-z\-\*\/]*` + valueFormat = `[\x20-\x2b\x2d-\x3c\x3e-\x7e]*[\x21-\x2b\x2d-\x3c\x3e-\x7e]` errInvalidKey errorConst = "invalid tracestate key" errInvalidValue errorConst = "invalid tracestate value" @@ -40,9 +40,10 @@ const ( ) var ( - keyRe = regexp.MustCompile(`^((` + noTenantKeyFormat + `)|(` + withTenantKeyFormat + `))$`) - valueRe = regexp.MustCompile(`^(` + valueFormat + `)$`) - memberRe = regexp.MustCompile(`^\s*((` + noTenantKeyFormat + `)|(` + withTenantKeyFormat + `))=(` + valueFormat + `)\s*$`) + noTenantKeyRe = regexp.MustCompile(`^` + noTenantKeyFormat + `$`) + withTenantKeyRe = regexp.MustCompile(`^` + withTenantKeyFormat + `$`) + valueRe = regexp.MustCompile(`^` + valueFormat + `$`) + memberRe = regexp.MustCompile(`^\s*((?:` + noTenantKeyFormat + `)|(?:` + withTenantKeyFormat + `))=(` + valueFormat + `)\s*$`) ) type member struct { @@ -51,10 +52,19 @@ type member struct { } func newMember(key, value string) (member, error) { - if !keyRe.MatchString(key) { + if len(key) > 256 { return member{}, fmt.Errorf("%w: %s", errInvalidKey, key) } - if !valueRe.MatchString(value) { + if !noTenantKeyRe.MatchString(key) { + if !withTenantKeyRe.MatchString(key) { + return member{}, fmt.Errorf("%w: %s", errInvalidKey, key) + } + atIndex := strings.LastIndex(key, "@") + if atIndex > 241 || len(key)-1-atIndex > 14 { + return member{}, fmt.Errorf("%w: %s", errInvalidKey, key) + } + } + if len(value) > 256 || !valueRe.MatchString(value) { return member{}, fmt.Errorf("%w: %s", errInvalidValue, value) } return member{Key: key, Value: value}, nil @@ -62,14 +72,14 @@ func newMember(key, value string) (member, error) { func parseMember(m string) (member, error) { matches := memberRe.FindStringSubmatch(m) - if len(matches) != 5 { + if len(matches) != 3 { return member{}, fmt.Errorf("%w: %s", errInvalidMember, m) } - - return member{ - Key: matches[1], - Value: matches[4], - }, nil + result, e := newMember(matches[1], matches[2]) + if e != nil { + return member{}, fmt.Errorf("%w: %s", errInvalidMember, m) + } + return result, nil } // String encodes member into a string compliant with the W3C Trace Context |