intel/metadata/cbnt: do not marshal large data blobs to JSON

Signed-off-by: Daniel Maslowski <[email protected]>

cmds/bginfo/main.go

@@ -0,0 +1,56 @@
+// Copyright 2017-2018 the LinuxBoot Authors. All rights reserved
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// fspinfo prints FSP header information.
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/linuxboot/fiano/pkg/intel/metadata/bg/bgbootpolicy"
+	"github.com/linuxboot/fiano/pkg/log"
+)
+
+var (
+	flagJSON = flag.Bool("j", false, "Output as JSON")
+)
+
+func main() {
+	flag.Parse()
+	if flag.Arg(0) == "" {
+		log.Fatalf("missing file name")
+	}
+	data, err := os.ReadFile(flag.Arg(0))
+	if err != nil {
+		log.Fatalf("cannot read input file: %x", err)
+	}
+
+	ACBPMagic := []byte("__ACBP__")
+	// __IBBS__ also seen in the next 16 bytes; not sure what that is
+	offset := bytes.Index(data, ACBPMagic)
+	if offset == -1 {
+		log.Fatalf("no %v (%x) magic found", string(ACBPMagic), ACBPMagic)
+	}
+
+	m := bgbootpolicy.Manifest{}
+	_, err = m.ReadFrom(bytes.NewReader(data[offset:]))
+	if err != nil {
+		log.Fatalf("%v", err)
+	}
+
+	j, err := json.MarshalIndent(m, "", "  ")
+	if err != nil {
+		log.Fatalf("cannot marshal JSON: %v", err)
+	}
+	if *flagJSON {
+		fmt.Println(string(j))
+	} else {
+		fmt.Print(m.PrettyString(0, true))
+	}
+}

cmds/km/main.go

@@ -0,0 +1,55 @@
+// Copyright 2017-2018 the LinuxBoot Authors. All rights reserved
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// fspinfo prints FSP header information.
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/linuxboot/fiano/pkg/intel/metadata/cbnt/cbntkey"
+	"github.com/linuxboot/fiano/pkg/log"
+)
+
+var (
+	flagJSON = flag.Bool("j", false, "Output as JSON")
+)
+
+func main() {
+	flag.Parse()
+	if flag.Arg(0) == "" {
+		log.Fatalf("missing file name")
+	}
+	data, err := os.ReadFile(flag.Arg(0))
+	if err != nil {
+		log.Fatalf("cannot read input file: %v", err)
+	}
+
+	KEYMMagic := []byte("__KEYM__")
+	offset := bytes.Index(data, KEYMMagic)
+	if offset == -1 {
+		log.Fatalf("no %v magic (%x) found", string(KEYMMagic), KEYMMagic)
+	}
+
+	m := cbntkey.Manifest{}
+	_, err = m.ReadFrom(bytes.NewReader(data))
+	if err != nil {
+		log.Fatalf("%v", err)
+	}
+
+	j, err := json.MarshalIndent(m, "", "  ")
+	if err != nil {
+		log.Fatalf("cannot marshal JSON: %v", err)
+	}
+	if *flagJSON {
+		fmt.Println(string(j))
+	} else {
+		fmt.Print(m.PrettyString(0, true))
+	}
+}