1 files changed, 65 insertions, 0 deletions
diff --git a/cmd/sigsum-debug/main.go b/cmd/sigsum-debug/main.go
new file mode 100644
index 0000000..7a1c894
--- /dev/null
+++ b/cmd/sigsum-debug/main.go
@@ -0,0 +1,65 @@
+// package main provides a tool named sigsum-debug
+//
+// Install:
+//
+//     $ go install git.sigsum.org/sigsum-go/cmd/sigsum-debug@latest
+//
+// Usage:
+//
+//     $ sigsum-debug help
+//
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+
+	"git.sigsum.org/sigsum-go/cmd/sigsum-debug/head"
+	"git.sigsum.org/sigsum-go/cmd/sigsum-debug/key"
+	"git.sigsum.org/sigsum-go/cmd/sigsum-debug/leaf"
+	"git.sigsum.org/sigsum-go/internal/options"
+)
+
+const usage = `
+sigsum-debug is a tool that helps debug sigsum logs on the command-line.
+It is meant to be used in conjuction with other utilities such as curl.
+
+Usage:
+
+  sigsum-debug help  Usage message
+  sigsum-debug key   Private and public key utilities
+  sigsum-debug leaf  Hash, sign, and verify tree leaves
+  sigsum-debug head  Sign and verify tree heads
+
+`
+
+func main() {
+	var err error
+
+	log.SetFlags(0)
+	opt := options.New(os.Args[1:], func() { log.Printf(usage[1:]) }, func(_ *flag.FlagSet) {})
+	switch opt.Name() {
+	case "help":
+		opt.Usage()
+	case "key":
+		err = key.Main(opt.Args())
+	case "leaf":
+		err = leaf.Main(opt.Args())
+	case "head":
+		err = head.Main(opt.Args())
+	default:
+		err = fmt.Errorf(": invalid command %q, try \"help\"", opt.Name())
+	}
+
+	if err != nil {
+		format := "sigsum-debug %s%s"
+		if len(opt.Name()) == 0 {
+			format = "sigsum-debug%s%s"
+		}
+
+		log.Printf(format, opt.Name(), err.Error())
+		os.Exit(1)
+	}
+}