mirror of
https://github.com/bettercap/bettercap
synced 2025-07-16 10:03:39 -07:00
399 lines
10 KiB
Go
399 lines
10 KiB
Go
package graph
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"strings"
|
|
"github.com/bettercap/bettercap/session"
|
|
"github.com/evilsocket/islazy/fs"
|
|
"io/ioutil"
|
|
"os"
|
|
"path"
|
|
"regexp"
|
|
"sort"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
var edgesParser = regexp.MustCompile(`^edges_(.+_[a-fA-F0-9:]{17})_(.+_.+)\.json$`)
|
|
|
|
type NodeCallback func(*Node)
|
|
type EdgeCallback func(*Node, *Edge, *Node)
|
|
|
|
type Graph struct {
|
|
sync.Mutex
|
|
|
|
path string
|
|
}
|
|
|
|
func NewGraph(path string) (*Graph, error) {
|
|
g := &Graph{
|
|
path: path,
|
|
}
|
|
return g, nil
|
|
}
|
|
|
|
func (g *Graph) EachNode(cb NodeCallback) error {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
for _, nodeType := range NodeTypes {
|
|
err := fs.Glob(g.path, fmt.Sprintf("%s_*.json", nodeType), func(fileName string) error {
|
|
var node Node
|
|
if raw, err := ioutil.ReadFile(fileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", fileName, err)
|
|
} else if err = json.Unmarshal(raw, &node); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", fileName, err)
|
|
} else {
|
|
cb(&node)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (g *Graph) EachEdge(cb EdgeCallback) error {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
return fs.Glob(g.path, "edges_*.json", func(fileName string) error {
|
|
matches := edgesParser.FindAllStringSubmatch(path.Base(fileName), -1)
|
|
if len(matches) > 0 && len(matches[0]) == 3 {
|
|
var left, right Node
|
|
leftFileName := path.Join(g.path, matches[0][1]+".json")
|
|
rightFileName := path.Join(g.path, matches[0][2]+".json")
|
|
|
|
if raw, err := ioutil.ReadFile(leftFileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", leftFileName, err)
|
|
} else if err = json.Unmarshal(raw, &left); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", leftFileName, err)
|
|
} else if raw, err = ioutil.ReadFile(rightFileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", rightFileName, err)
|
|
} else if err = json.Unmarshal(raw, &right); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", rightFileName, err)
|
|
}
|
|
|
|
var edges []*Edge
|
|
if raw, err := ioutil.ReadFile(fileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", fileName, err)
|
|
} else if err = json.Unmarshal(raw, &edges); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", fileName, err)
|
|
}
|
|
|
|
for _, edge := range edges {
|
|
cb(&left, edge, &right)
|
|
}
|
|
} else {
|
|
return fmt.Errorf("filename %s doesn't match edges parser", fileName)
|
|
}
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (g *Graph) Traverse(root string, onNode NodeCallback, onEdge EdgeCallback) error {
|
|
if root == "" {
|
|
// traverse the entire graph
|
|
if err := g.EachNode(onNode); err != nil {
|
|
return err
|
|
} else if err = g.EachEdge(onEdge); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
// start by a specific node
|
|
roots, err := g.FindOtherTypes("", root)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
stack := NewStack()
|
|
|
|
for _, root := range roots {
|
|
stack.Push(root)
|
|
}
|
|
|
|
type edgeBucket struct {
|
|
left *Node
|
|
edge *Edge
|
|
right *Node
|
|
}
|
|
|
|
allEdges := make([]edgeBucket, 0)
|
|
visited := make(map[string]bool)
|
|
|
|
for {
|
|
if last := stack.Pop(); last == nil {
|
|
break
|
|
} else {
|
|
node := last.(*Node)
|
|
nodeID := node.String()
|
|
if _, found := visited[nodeID]; found {
|
|
continue
|
|
} else {
|
|
visited[nodeID] = true
|
|
}
|
|
|
|
onNode(node)
|
|
|
|
// find all edges starting from this node
|
|
edgesFilter := fmt.Sprintf("edges_%s_*.json", nodeID)
|
|
err = fs.Glob(g.path, edgesFilter, func(edgeFileName string) error {
|
|
right := new(Node)
|
|
|
|
base := path.Base(edgeFileName)
|
|
base = strings.ReplaceAll(base, "edges_", "")
|
|
base = strings.ReplaceAll(base, nodeID + "_", "")
|
|
|
|
// read right node
|
|
rightFileName := path.Join(g.path, base)
|
|
if raw, err := ioutil.ReadFile(rightFileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", rightFileName, err)
|
|
} else if err = json.Unmarshal(raw, right); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", rightFileName, err)
|
|
}
|
|
|
|
stack.Push(right)
|
|
|
|
// read edges
|
|
var edges []*Edge
|
|
if raw, err := ioutil.ReadFile(edgeFileName); err != nil {
|
|
return fmt.Errorf("error while reading %s: %v", edgeFileName, err)
|
|
} else if err = json.Unmarshal(raw, &edges); err != nil {
|
|
return fmt.Errorf("error while decoding %s: %v", edgeFileName, err)
|
|
}
|
|
|
|
for _, edge := range edges {
|
|
allEdges = append(allEdges, edgeBucket {
|
|
left: node,
|
|
edge: edge,
|
|
right: right,
|
|
})
|
|
}
|
|
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
for _, edge := range allEdges {
|
|
onEdge(edge.left, edge.edge, edge.right)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (g *Graph) Dot(filter, layout, name string) (string, error) {
|
|
data := fmt.Sprintf("digraph %s {\n", name)
|
|
data += fmt.Sprintf(" layout=%s\n", layout)
|
|
|
|
if err := g.Traverse(filter, func(node *Node) {
|
|
data += fmt.Sprintf(" %s\n", node.Dot(filter == node.ID))
|
|
}, func(left *Node, edge *Edge, right *Node) {
|
|
data += fmt.Sprintf(" %s\n", edge.Dot(left, right))
|
|
}); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
data += "\n"
|
|
data += " overlap=false\n"
|
|
data += "}"
|
|
|
|
return data, nil
|
|
}
|
|
|
|
func (g *Graph) FindNode(t NodeType, id string) (*Node, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
nodeFileName := path.Join(g.path, fmt.Sprintf("%s_%s.json", t, id))
|
|
if fs.Exists(nodeFileName) {
|
|
var node Node
|
|
if raw, err := ioutil.ReadFile(nodeFileName); err != nil {
|
|
return nil, fmt.Errorf("error while reading %s: %v", nodeFileName, err)
|
|
} else if err = json.Unmarshal(raw, &node); err != nil {
|
|
return nil, fmt.Errorf("error while decoding %s: %v", nodeFileName, err)
|
|
}
|
|
return &node, nil
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (g *Graph) FindOtherTypes(t NodeType, id string) ([]*Node, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
var otherNodes []*Node
|
|
|
|
for _, otherType := range NodeTypes {
|
|
if otherType != t {
|
|
if nodeFileName := path.Join(g.path, fmt.Sprintf("%s_%s.json", otherType, id)); fs.Exists(nodeFileName) {
|
|
var node Node
|
|
if raw, err := ioutil.ReadFile(nodeFileName); err != nil {
|
|
return nil, fmt.Errorf("error while reading %s: %v", nodeFileName, err)
|
|
} else if err = json.Unmarshal(raw, &node); err != nil {
|
|
return nil, fmt.Errorf("error while decoding %s: %v", nodeFileName, err)
|
|
} else {
|
|
otherNodes = append(otherNodes, &node)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return otherNodes, nil
|
|
}
|
|
|
|
func (g *Graph) CreateNode(t NodeType, id string, entity interface{}, annotations string) (*Node, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
node := &Node{
|
|
Type: t,
|
|
ID: id,
|
|
CreatedAt: time.Now(),
|
|
Entity: entity,
|
|
Annotations: annotations,
|
|
}
|
|
|
|
nodeFileName := path.Join(g.path, fmt.Sprintf("%s.json", node.String()))
|
|
if raw, err := json.Marshal(node); err != nil {
|
|
return nil, fmt.Errorf("error creating data for %s: %v", nodeFileName, err)
|
|
} else if err = ioutil.WriteFile(nodeFileName, raw, os.ModePerm); err != nil {
|
|
return nil, fmt.Errorf("error creating %s: %v", nodeFileName, err)
|
|
}
|
|
|
|
session.I.Events.Add("graph.node.new", node)
|
|
|
|
return node, nil
|
|
}
|
|
|
|
func (g *Graph) UpdateNode(node *Node) error {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
node.UpdatedAt = time.Now()
|
|
nodeFileName := path.Join(g.path, fmt.Sprintf("%s.json", node.String()))
|
|
if raw, err := json.Marshal(node); err != nil {
|
|
return fmt.Errorf("error creating new data for %s: %v", nodeFileName, err)
|
|
} else if err = ioutil.WriteFile(nodeFileName, raw, os.ModePerm); err != nil {
|
|
return fmt.Errorf("error updating %s: %v", nodeFileName, err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (g *Graph) findEdgesUnlocked(from, to *Node) (string, []*Edge, error) {
|
|
edgesFileName := path.Join(g.path, fmt.Sprintf("edges_%s_%s.json", from.String(), to.String()))
|
|
if fs.Exists(edgesFileName) {
|
|
var edges []*Edge
|
|
if raw, err := ioutil.ReadFile(edgesFileName); err != nil {
|
|
return edgesFileName, nil, fmt.Errorf("error while reading %s: %v", edgesFileName, err)
|
|
} else if err = json.Unmarshal(raw, &edges); err != nil {
|
|
return edgesFileName, nil, fmt.Errorf("error while decoding %s: %v", edgesFileName, err)
|
|
}
|
|
|
|
// sort edges from oldest to newer
|
|
sort.Slice(edges, func(i, j int) bool {
|
|
return edges[i].CreatedAt.Before(edges[j].CreatedAt)
|
|
})
|
|
|
|
return edgesFileName, edges, nil
|
|
}
|
|
|
|
return edgesFileName, nil, nil
|
|
}
|
|
|
|
func (g *Graph) FindEdges(from, to *Node) ([]*Edge, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
_, edges, err := g.findEdgesUnlocked(from, to)
|
|
return edges, err
|
|
}
|
|
|
|
func (g *Graph) FindLastEdgeOfType(from, to *Node, edgeType EdgeType) (*Edge, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
if _, edges, err := g.findEdgesUnlocked(from, to); err != nil {
|
|
return nil, err
|
|
} else {
|
|
num := len(edges)
|
|
for i := range edges {
|
|
// loop backwards
|
|
idx := num - 1 - i
|
|
edge := edges[idx]
|
|
if edge.Type == edgeType {
|
|
return edge, nil
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (g *Graph) FindLastRecentEdgeOfType(from, to *Node, edgeType EdgeType, staleTime time.Duration) (*Edge, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
if _, edges, err := g.findEdgesUnlocked(from, to); err != nil {
|
|
return nil, err
|
|
} else {
|
|
num := len(edges)
|
|
for i := range edges {
|
|
// loop backwards
|
|
idx := num - 1 - i
|
|
edge := edges[idx]
|
|
if edge.Type == edgeType {
|
|
if time.Since(edge.CreatedAt) >= staleTime {
|
|
return nil, nil
|
|
}
|
|
// edge is still fresh
|
|
return edge, nil
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (g *Graph) CreateEdge(from, to *Node, edgeType EdgeType) (*Edge, error) {
|
|
g.Lock()
|
|
defer g.Unlock()
|
|
|
|
var edgesFileName string
|
|
var edges []*Edge
|
|
|
|
edge := &Edge{
|
|
Type: edgeType,
|
|
CreatedAt: time.Now(),
|
|
Position: session.I.GPS,
|
|
}
|
|
|
|
if edgesFileName, edges, _ = g.findEdgesUnlocked(from, to); edges != nil {
|
|
edges = append(edges, edge)
|
|
} else {
|
|
edges = []*Edge{edge}
|
|
}
|
|
|
|
if raw, err := json.Marshal(edges); err != nil {
|
|
return nil, fmt.Errorf("error creating data for %s: %v", edgesFileName, err)
|
|
} else if err = ioutil.WriteFile(edgesFileName, raw, os.ModePerm); err != nil {
|
|
return nil, fmt.Errorf("error writing %s: %v", edgesFileName, err)
|
|
}
|
|
|
|
session.I.Events.Add("graph.edge.new", EdgeEvent{
|
|
Left: from,
|
|
Edge: edge,
|
|
Right: to,
|
|
})
|
|
|
|
return edge, nil
|
|
}
|