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authorLinus Nordberg <linus@nordberg.se>2022-04-28 15:46:01 +0200
committerLinus Nordberg <linus@nordberg.se>2022-04-28 15:46:01 +0200
commit47490448be1b7006641e6badc6a84b1441b27698 (patch)
treefb386e9e6ccb90b368da63d0a8085d114fd8431c /cmd/sigsum-debug/head/head.go
parent2dcd7bca2f3e69fb6f1770ec0bf740d8956978ca (diff)
parentb270a4c0d10947fe480bad7330b31bb793225968 (diff)
Merge branch 'merge/sigsum-debug'
Diffstat (limited to 'cmd/sigsum-debug/head/head.go')
-rw-r--r--cmd/sigsum-debug/head/head.go103
1 files changed, 103 insertions, 0 deletions
diff --git a/cmd/sigsum-debug/head/head.go b/cmd/sigsum-debug/head/head.go
new file mode 100644
index 0000000..b1b3044
--- /dev/null
+++ b/cmd/sigsum-debug/head/head.go
@@ -0,0 +1,103 @@
+package head
+
+import (
+ "flag"
+ "fmt"
+ "log"
+
+ "git.sigsum.org/sigsum-go/cmd/sigsum-debug/head/consistency"
+ "git.sigsum.org/sigsum-go/cmd/sigsum-debug/head/sign"
+ "git.sigsum.org/sigsum-go/cmd/sigsum-debug/head/verify"
+ "git.sigsum.org/sigsum-go/internal/options"
+)
+
+const usage = `
+sigsum-debug head signs and verifies tree heads.
+
+Usage:
+
+ sigsum-debug head help
+ Outputs a usage message
+
+ sigsum-debug head sign -k PRIVATE_KEY -h KEY_HASH
+ Reads an ascii signed tree head from stdin and outputs a new signature
+
+ sigsum-debug head verify -k PUBLIC_KEY
+ Reads an ascii signed tree head from stdin and verifies it
+
+ sigsum-debug head consistency -n OLD_SIZE -N NEW_SIZE -r OLD_ROOT -R NEW_ROOT
+ Reads an ascii consistency proof from stdin and verifies it
+
+`
+
+var (
+ optPrivateKey, optPublicKey, optKeyHash, optOldRoot, optNewRoot string
+ optOldSize, optNewSize uint64
+)
+
+func Main(args []string) error {
+ var err error
+
+ opt := options.New(args, func() { log.Printf(usage[1:]) }, setOptions)
+ err = checkOptions(opt.Name())
+ if err == nil {
+ switch opt.Name() {
+ case "help":
+ opt.Usage()
+ case "sign":
+ err = sign.Main(opt.Args(), optPrivateKey, optKeyHash)
+ case "verify":
+ err = verify.Main(opt.Args(), optPublicKey)
+ case "consistency":
+ err = consistency.Main(opt.Args(), optOldSize, optNewSize, optOldRoot, optNewRoot)
+ default:
+ err = fmt.Errorf("invalid command %q, try \"help\"", opt.Name())
+ }
+ }
+ if err != nil {
+ format := " %s: %w"
+ if len(opt.Name()) == 0 {
+ format = "%s: %w"
+ }
+ err = fmt.Errorf(format, opt.Name(), err)
+ }
+
+ return err
+}
+
+func setOptions(fs *flag.FlagSet) {
+ switch cmd := fs.Name(); cmd {
+ case "help":
+ case "sign":
+ options.AddString(fs, &optPrivateKey, "k", "private-key", options.DefaultString)
+ options.AddString(fs, &optKeyHash, "h", "key-hash", options.DefaultString)
+ case "verify":
+ options.AddString(fs, &optPublicKey, "k", "public-key", options.DefaultString)
+ case "consistency":
+ options.AddUint64(fs, &optOldSize, "n", "old-size", options.DefaultUint64)
+ options.AddUint64(fs, &optNewSize, "N", "new-size", options.DefaultUint64)
+ options.AddString(fs, &optOldRoot, "r", "old-root", options.DefaultString)
+ options.AddString(fs, &optNewRoot, "R", "new-root", options.DefaultString)
+ }
+}
+
+// checkOptions checks that options with required arguments were set
+func checkOptions(cmd string) error {
+ var err error
+
+ switch cmd {
+ case "help":
+ case "sign":
+ err = options.CheckString("private key", optPrivateKey, err)
+ err = options.CheckString("key hash", optKeyHash, err)
+ case "verify":
+ err = options.CheckString("public key", optPublicKey, err)
+ case "consistency":
+ err = options.CheckUint64("old size", optOldSize, err)
+ err = options.CheckUint64("new size", optNewSize, err)
+ err = options.CheckString("old root", optOldRoot, err)
+ err = options.CheckString("new root", optNewRoot, err)
+ }
+
+ return err
+}