verifysetup storage reader

6 files changed, 199 insertions, 2 deletions

diff --git a/verifysetup/cmd/setup.go b/verifysetup/cmd/setup.go
index 3897903..c2676fc 100644
--- a/verifysetup/cmd/setup.go
+++ b/verifysetup/cmd/setup.go
@@ -1,10 +1,16 @@
 package cmd
 
 import (
+	"bytes"
+	"fmt"
+	verify "github.com/axtloss/fsverify/core"
+	"github.com/axtloss/fsverify/verifysetup/core"
 	"github.com/spf13/cobra"
+	"math"
+	"os"
 )
 
-func NewVerifyCommand() *cobra.Command {
+func NewSetupCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:          "setup",
 		Short:        "Set up fsverify",
@@ -16,5 +22,56 @@ func NewVerifyCommand() *cobra.Command {
 }
 
 func SetupCommand(_ *cobra.Command, args []string) error {
-	return nil
+	if len(args) != 1 {
+		return fmt.Errorf("Usage: verifysetup setup [partition]")
+	}
+	fmt.Println("Using partition: ", args[0])
+	disk, err := os.Open(args[0])
+	if err != nil {
+		return err
+	}
+	defer disk.Close()
+	fmt.Println("Reading from disk")
+	diskInfo, err := disk.Stat()
+	if err != nil {
+		return err
+	}
+	diskSize := diskInfo.Size()
+	blockCount := math.Floor(float64(diskSize / 4000))
+	lastBlockSize := float64(diskSize) - blockCount*4000.0
+	fmt.Println(diskSize)
+	fmt.Println(blockCount)
+	fmt.Println(lastBlockSize)
+	node := verify.Node{}
+	block := make([]byte, 4000)
+	diskBytes := make([]byte, diskSize)
+	_, err = disk.Read(diskBytes)
+	if err != nil {
+		return err
+	}
+	reader := bytes.NewReader(diskBytes)
+	for i := 0; i < int(blockCount); i++ {
+		reader = bytes.NewReader(diskBytes)
+		block, err = core.ReadBlock(i*4000, (i*4000)+4000, reader)
+		if err != nil {
+			return err
+		}
+		node, err = core.CreateNode(i*4000, (i*4000)+4000, block, &node)
+		if err != nil {
+			return err
+		}
+		fmt.Println(node)
+		err = core.AddNode(node, nil, "./fsverify.db")
+	}
+	finalBlock, err := core.ReadBlock(int(blockCount*4000), int((blockCount*4000)+lastBlockSize), reader)
+	if err != nil {
+		return err
+	}
+	finalNode, err := core.CreateNode(int(blockCount*4000), int((blockCount*4000)+lastBlockSize), finalBlock, &node)
+	if err != nil {
+		return err
+	}
+	fmt.Println(finalNode)
+	err = core.AddNode(finalNode, nil, "./fsverify.db")
+	return err
 }
diff --git a/verifysetup/core/crypt.go b/verifysetup/core/crypt.go
new file mode 100644
index 0000000..81130a3
--- /dev/null
+++ b/verifysetup/core/crypt.go
@@ -0,0 +1,18 @@
+package core
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"strings"
+)
+
+func CalculateBlockHash(block []byte) (string, error) {
+	hash := sha256.New()
+	if _, err := io.Copy(hash, bytes.NewReader(block)); err != nil {
+		return "", err
+	}
+	hashInBytes := hash.Sum(nil)[:32]
+	return strings.TrimSpace(fmt.Sprintf("%x", hashInBytes)), nil
+}
diff --git a/verifysetup/core/storage.go b/verifysetup/core/storage.go
new file mode 100644
index 0000000..831d637
--- /dev/null
+++ b/verifysetup/core/storage.go
@@ -0,0 +1,75 @@
+package core
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	verify "github.com/axtloss/fsverify/core"
+	bolt "go.etcd.io/bbolt"
+)
+
+var TotalReadBlocks = 0
+
+func ReadBlock(start int, end int, device *bytes.Reader) ([]byte, error) {
+	block := make([]byte, end-start)
+	_, err := device.Seek(int64(start), 0)
+	if err != nil {
+		return []byte{}, err
+	}
+	_, err = device.Read(block)
+	TotalReadBlocks = TotalReadBlocks + (end - start)
+	return block, err
+}
+
+func CreateNode(blockStart int, blockEnd int, block []byte, prevNode *verify.Node) (verify.Node, error) {
+	node := verify.Node{}
+	node.BlockStart = blockStart
+	node.BlockEnd = blockEnd
+	blockHash, err := CalculateBlockHash(block)
+	if err != nil {
+		return verify.Node{}, err
+	}
+	node.BlockSum = blockHash
+	var prevNodeHash string
+	if prevNode.PrevNodeSum != "" {
+		prevNodeHash, err = prevNode.GetHash()
+		if err != nil {
+			return verify.Node{}, err
+		}
+	} else {
+		prevNodeHash = "Entrypoint"
+	}
+	node.PrevNodeSum = prevNodeHash
+	return node, nil
+}
+
+func AddNode(node verify.Node, db *bolt.DB, dbPath string) error {
+	var err error
+	var deferDB bool
+	if db == nil {
+		db, err = bolt.Open(dbPath, 0777, nil)
+		if err != nil {
+			return err
+		}
+		deferDB = true
+	} else if db.IsReadOnly() {
+		return fmt.Errorf("Error: database is opened read only, unable to add nodes")
+	}
+	err = db.Update(func(tx *bolt.Tx) error {
+		nodes, err := tx.CreateBucketIfNotExists([]byte("Nodes"))
+		if err != nil {
+			return err
+		}
+		if buf, err := json.Marshal(node); err != nil {
+			return err
+		} else if err := nodes.Put([]byte(node.PrevNodeSum), buf); err != nil {
+			return err
+		}
+		return nil
+
+	})
+	if deferDB {
+		defer db.Close()
+	}
+	return err
+}
diff --git a/verifysetup/go.mod b/verifysetup/go.mod
index 25642c6..7acfa12 100644
--- a/verifysetup/go.mod
+++ b/verifysetup/go.mod
@@ -1,3 +1,15 @@
 module github.com/axtloss/fsverify/verifysetup
 
 go 1.21.6
+
+require (
+	github.com/axtloss/fsverify v0.0.0-20240204141913-a215d3358f35 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jedisct1/go-minisign v0.0.0-20230811132847-661be99b8267 // indirect
+	github.com/spf13/cobra v1.8.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 // indirect
+	go.etcd.io/bbolt v1.3.8 // indirect
+	golang.org/x/crypto v0.17.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+)
diff --git a/verifysetup/go.sum b/verifysetup/go.sum
new file mode 100644
index 0000000..9ad7abe
--- /dev/null
+++ b/verifysetup/go.sum
@@ -0,0 +1,22 @@
+github.com/axtloss/fsverify v0.0.0-20240204141913-a215d3358f35 h1:GnvD9HxKht9mD1NLjDaffqNfTJcxbOgXfkexYDGAJ5E=
+github.com/axtloss/fsverify v0.0.0-20240204141913-a215d3358f35/go.mod h1:Tve3hFV8BxkGp5iY/k+sKSF/Qv1SGLDoHFYQI3xjdHQ=
+github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/jedisct1/go-minisign v0.0.0-20230811132847-661be99b8267 h1:TMtDYDHKYY15rFihtRfck/bfFqNfvcabqvXAFQfAUpY=
+github.com/jedisct1/go-minisign v0.0.0-20230811132847-661be99b8267/go.mod h1:h1nSAbGFqGVzn6Jyl1R/iCcBUHN4g+gW1u9CoBTrb9E=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.8.0 h1:7aJaZx1B85qltLMc546zn58BxxfZdR/W22ej9CFoEf0=
+github.com/spf13/cobra v1.8.0/go.mod h1:WXLWApfZ71AjXPya3WOlMsY9yMs7YeiHhFVlvLyhcho=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 h1:UyzmZLoiDWMRywV4DUYb9Fbt8uiOSooupjTq10vpvnU=
+github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
+go.etcd.io/bbolt v1.3.8 h1:xs88BrvEv273UsB79e0hcVrlUWmS0a8upikMFhSyAtA=
+go.etcd.io/bbolt v1.3.8/go.mod h1:N9Mkw9X8x5fupy0IKsmuqVtoGDyxsaDlbk4Rd05IAQw=
+golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
+golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
+golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/verifysetup/main.go b/verifysetup/main.go
new file mode 100644
index 0000000..2c1bd69
--- /dev/null
+++ b/verifysetup/main.go
@@ -0,0 +1,13 @@
+package main
+
+import (
+	"github.com/axtloss/fsverify/verifysetup/cmd"
+)
+
+var (
+	Version = "0.1.0"
+)
+
+func main() {
+	cmd.Execute()
+}