mirror of
https://github.com/bettercap/bettercap.git
synced 2024-11-03 04:00:07 -08:00
96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
package session
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"github.com/bettercap/bettercap/v2/caplets"
|
|
_ "github.com/bettercap/bettercap/v2/js"
|
|
|
|
"github.com/evilsocket/islazy/fs"
|
|
"github.com/evilsocket/islazy/plugin"
|
|
"github.com/evilsocket/islazy/str"
|
|
)
|
|
|
|
// require("telegram.js")
|
|
var requireParser = regexp.MustCompile(`(?msi)^\s*require\s*\(\s*["']([^"']+)["']\s*\);?\s*$`)
|
|
|
|
type Script struct {
|
|
*plugin.Plugin
|
|
}
|
|
|
|
// yo! we're doing c-like preprocessing on a javascript file from go :D
|
|
func preprocess(basePath string, code string, level int) (string, error) {
|
|
if level >= 255 {
|
|
return "", fmt.Errorf("too many nested includes")
|
|
}
|
|
|
|
matches := requireParser.FindAllStringSubmatch(code, -1)
|
|
for _, match := range matches {
|
|
expr := match[0]
|
|
fileName := str.Trim(match[1])
|
|
|
|
if fileName[0] != '/' {
|
|
searchPaths := []string{
|
|
filepath.Join(basePath, fileName),
|
|
filepath.Join(caplets.InstallBase, fileName),
|
|
}
|
|
|
|
if !strings.Contains(fileName, ".js") {
|
|
searchPaths = append(searchPaths, []string{
|
|
filepath.Join(basePath, fileName) + ".js",
|
|
filepath.Join(caplets.InstallBase, fileName) + ".js",
|
|
}...)
|
|
}
|
|
|
|
found := false
|
|
for _, fName := range searchPaths {
|
|
if fs.Exists(fName) {
|
|
fileName = fName
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
if !found {
|
|
return "", fmt.Errorf("file %s not found in any of %#v", fileName, searchPaths)
|
|
}
|
|
}
|
|
|
|
raw, err := ioutil.ReadFile(fileName)
|
|
if err != nil {
|
|
return "", fmt.Errorf("%s: %v", fileName, err)
|
|
}
|
|
|
|
if includedBody, err := preprocess(filepath.Dir(fileName), string(raw), level+1); err != nil {
|
|
return "", fmt.Errorf("%s: %v", fileName, err)
|
|
} else {
|
|
code = strings.ReplaceAll(code, expr, includedBody)
|
|
}
|
|
}
|
|
|
|
return code, nil
|
|
}
|
|
|
|
func LoadScript(fileName string) (*Script, error) {
|
|
raw, err := ioutil.ReadFile(fileName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
basePath := filepath.Dir(fileName)
|
|
if code, err := preprocess(basePath, string(raw), 0); err != nil {
|
|
return nil, err
|
|
} else if p, err := plugin.Parse(code); err != nil {
|
|
return nil, err
|
|
} else {
|
|
p.Path = fileName
|
|
p.Name = strings.Replace(basePath, ".js", "", -1)
|
|
return &Script{
|
|
Plugin: p,
|
|
}, nil
|
|
}
|
|
}
|