/
analyzers.go
125 lines (108 loc) · 3.37 KB
/
analyzers.go
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package gokart
// Copyright (c) 2018 Bhojpur Consulting Private Limited, India. All rights reserved.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import (
"encoding/json"
"go/ast"
"go/parser"
"go/token"
"io/ioutil"
"os/exec"
"path/filepath"
"regexp"
"sort"
"strings"
"github.com/praetorian-inc/gokart/util"
"github.com/sirupsen/logrus"
"gopkg.in/yaml.v3"
)
const AnalyzerFilename = "_gokart-analyzer.yaml"
func BuildAnalyzerConfig(wd string, apiDepPattern *regexp.Regexp) error {
var cfg util.ConfigFile
err := yaml.Unmarshal(util.DefaultAnalyzersContent, &cfg)
if err != nil {
return err
}
out, err := exec.Command("go", "mod", "graph").CombinedOutput()
if err != nil {
return err
}
deps := make(map[string]struct{})
for _, l := range strings.Split(string(out), "\n") {
segs := strings.Split(l, " ")
segs = strings.Split(segs[0], "@")
nme := segs[0]
if !apiDepPattern.MatchString(nme) {
continue
}
deps[nme] = struct{}{}
}
depsSorted := make([]string, 0, len(deps))
for dep := range deps {
depsSorted = append(depsSorted, dep)
logrus.WithField("dep", dep).Debug("found a GoKart relevant API dependency")
}
sort.Strings(depsSorted)
for _, dep := range depsSorted {
var nfo struct {
Dir string
GoFiles []string
}
out, err = exec.Command("go", "list", "-json", dep).CombinedOutput()
if err != nil {
logrus.WithError(err).Warnf("cannot list depenency %s", dep)
continue
}
err = json.Unmarshal(out, &nfo)
if err != nil {
logrus.WithError(err).Warnf("cannot list depenency %s", dep)
continue
}
fset := token.NewFileSet()
for _, fn := range nfo.GoFiles {
fn := filepath.Join(nfo.Dir, fn)
fc, err := ioutil.ReadFile(fn)
if err != nil {
logrus.WithError(err).Warnf("cannot read %s", fn)
continue
}
f, err := parser.ParseFile(fset, fn, fc, parser.SkipObjectResolution)
if err != nil {
logrus.WithError(err).Warnf("cannot parse %s", fn)
continue
}
for _, dec := range f.Decls {
decl, ok := dec.(*ast.GenDecl)
if !ok {
continue
}
for _, spec := range decl.Specs {
t, ok := spec.(*ast.TypeSpec)
if !ok {
continue
}
cfg.Sources.Types[dep] = append(cfg.Sources.Types[dep], t.Name.String())
}
}
}
}
cfgFC, err := yaml.Marshal(cfg)
if err != nil {
return err
}
return ioutil.WriteFile(filepath.Join(wd, AnalyzerFilename), cfgFC, 0644)
}