2 files changed, 174 insertions, 0 deletions
diff --git a/vendor/go.mau.fi/libsignal/logger/DefaultLogger.go b/vendor/go.mau.fi/libsignal/logger/DefaultLogger.go
new file mode 100644
index 00000000..62515bff
--- /dev/null
+++ b/vendor/go.mau.fi/libsignal/logger/DefaultLogger.go
@@ -0,0 +1,85 @@
+package logger
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// DefaultLogger is used if no logger has been set up.
+type defaultLogger struct {
+	namespaces []string
+}
+
+// log simply logs the given message to stdout if the message
+// caller is allowed to log.
+func (d *defaultLogger) log(level, caller, msg string) {
+	if !d.shouldLog(caller) {
+		// return
+	}
+	t := time.Now()
+	fmt.Println(
+		"["+level+"]",
+		t.Format(time.RFC3339),
+		caller,
+		"▶ ",
+		msg,
+	)
+}
+
+// shouldLog determines whether or not the given caller should
+// be allowed to log messages.
+func (d *defaultLogger) shouldLog(caller string) bool {
+	shouldLog := false
+	d.ensureNamespaces()
+	for _, namespace := range d.namespaces {
+		if namespace == "all" {
+			shouldLog = true
+		}
+		if strings.Contains(caller, namespace) {
+			shouldLog = true
+		}
+	}
+
+	return shouldLog
+}
+
+// ensureNamespaces checks to see if our list of loggable namespaces
+// has been initialized or not. If not, it defaults to log all.
+func (d *defaultLogger) ensureNamespaces() {
+	if d.namespaces == nil {
+		d.namespaces = []string{"all"}
+	}
+}
+
+// Debug is used to log debug messages.
+func (d *defaultLogger) Debug(caller, msg string) {
+	//d.log("DEBUG", caller, msg)
+}
+
+// Info is used to log info messages.
+func (d *defaultLogger) Info(caller, msg string) {
+	d.log("INFO", caller, msg)
+}
+
+// Warning is used to log warning messages.
+func (d *defaultLogger) Warning(caller, msg string) {
+	d.log("WARNING", caller, msg)
+}
+
+// Error is used to log error messages.
+func (d *defaultLogger) Error(caller, msg string) {
+	d.log("ERROR", caller, msg)
+}
+
+// Configure takes a configuration string separated by commas
+// that contains all the callers that should be logged. This
+// allows granular logging of different go files.
+//
+// Example:
+//   logger.Configure("RootKey.go,Curve.go")
+//   logger.Configure("all")
+//
+func (d *defaultLogger) Configure(settings string) {
+	d.namespaces = strings.Split(settings, ",")
+}
diff --git a/vendor/go.mau.fi/libsignal/logger/Logger.go b/vendor/go.mau.fi/libsignal/logger/Logger.go
new file mode 100644
index 00000000..653320bf
--- /dev/null
+++ b/vendor/go.mau.fi/libsignal/logger/Logger.go
@@ -0,0 +1,89 @@
+// Package logger provides optional debug logging of the Signal library.
+package logger
+
+import (
+	"fmt"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// Logger is a shared loggable interface that this library will use for all log messages.
+var Logger Loggable
+
+// Loggable is an interface for logging.
+type Loggable interface {
+	Debug(caller, message string)
+	Info(caller, message string)
+	Warning(caller, message string)
+	Error(caller, message string)
+	Configure(settings string)
+}
+
+// Setup will configure the shared logger to use the provided logger.
+func Setup(logger *Loggable) {
+	Logger = *logger
+}
+
+// ToString converts an arbitrary number of objects to a string for use in a logger.
+func toString(a ...interface{}) string {
+	return fmt.Sprint(a...)
+}
+
+// EnsureLogger will use the default logger if one was not set up.
+func ensureLogger() {
+	if Logger == nil {
+		// fmt.Println("Error: No logger was configured. Use `logger.Setup` to configure a logger.")
+		Logger = &defaultLogger{}
+	}
+}
+
+// GetCaller gets the go file name and line number that the logger was called from.
+func getCaller() string {
+	var file string
+	_, path, line, _ := runtime.Caller(2)
+	paths := strings.Split(path, "/")
+	if len(paths) > 0 {
+		file = paths[len(paths)-1]
+	} else {
+		file = "<unkn>"
+	}
+
+	return file + ":" + strconv.Itoa(line)
+}
+
+/*
+ * Go methods used by the library for logging.
+ */
+
+// Debug prints debug level logs.
+func Debug(msg ...interface{}) {
+	ensureLogger()
+	Logger.Debug(getCaller(), toString(msg...))
+}
+
+// Info prints info level logs.
+func Info(msg ...interface{}) {
+	ensureLogger()
+	Logger.Info(getCaller(), toString(msg...))
+}
+
+// Warning prints warning level logs.
+func Warning(msg ...interface{}) {
+	ensureLogger()
+	Logger.Warning(getCaller(), toString(msg...))
+}
+
+// Error prints error level logs.
+func Error(msg ...interface{}) {
+	ensureLogger()
+	Logger.Error(getCaller(), toString(msg...))
+}
+
+// Configure allows arbitrary logger configuration settings. The
+// default logger uses this method to configure what Go files
+// are allowed to log.
+func Configure(settings string) {
+	ensureLogger()
+	Logger.Configure(settings)
+}