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finder.go
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finder.go
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package container_software
import (
"context"
"regexp"
"strings"
"sync"
"github.com/shirou/gopsutil/v3/process"
"github.com/pkg/errors"
jsoniter "github.com/json-iterator/go"
"github.com/Yeatesss/container-software/core"
"github.com/coocood/freecache"
)
var (
ctrCache = freecache.NewCache(1024 * 1024 * 10)
)
type Finder struct {
Cache
}
type Cache struct {
ctrCache *freecache.Cache
}
func NewFinder() *Finder {
return &Finder{Cache{ctrCache: ctrCache}}
}
func (l *Finder) Find(ctx context.Context, c *core.Container, onlys ...interface{}) (softwares []*core.Software, err error) {
var (
hit bool
processBoard = core.NewProcessBoard(c.Processes.Len())
wg sync.WaitGroup
)
//set environment variable
if c.EnvPath == "" {
ps, _ := process.NewProcess(int32(c.Processes[0].Process.Pid()))
psenv, _ := ps.Environ()
for _, env := range psenv {
if strings.HasPrefix(env, "PATH") {
c.EnvPath = env
break
}
}
}
if val, _ := l.ctrCache.Get([]byte(c.Id)); len(val) > 0 {
err = jsoniter.Unmarshal(val, &softwares)
return
}
var validContainer = func(finder core.SoftwareFinder) {
var err error
if processBoard.Get() == 0 {
return
}
var is bool
if processBoard.Get() == 0 {
return
}
if is, err = finder.Verify(ctx, c, func(p *core.Process, finder core.SoftwareFinder) {
p.SetFinder(finder)
}); err == nil && is {
processBoard.Sub()
hit = true
}
return
}
var validContainers = func(finders map[core.SwName]core.SoftwareFinder) {
if processBoard.Get() == 0 {
return
}
for _, finder := range finders {
wg.Add(1)
go func(finder core.SoftwareFinder) {
defer wg.Done()
validContainer(finder)
}(finder)
}
wg.Wait()
return
}
var priorityMarking = func(envPath string, ps *core.Process) error {
var is bool
cmdline, err := ps.Cmdline()
if err != nil {
return err
}
if strings.Contains(strings.ToLower(cmdline.String()), "mysql") {
if is, err = core.NewMysqlFindler().SingleVerify(ctx, ps, func(p *core.Process, finder core.SoftwareFinder) {
p.SetFinder(finder)
}); err == nil && is {
hit = true
}
}
if strings.Contains(strings.ToLower(cmdline.String()), "sqlservr") {
if is, err = core.NewSqlServerFindler().SingleVerify(ctx, ps, func(p *core.Process, finder core.SoftwareFinder) {
p.SetFinder(finder)
}); err == nil && is {
hit = true
}
}
if strings.Contains(strings.ToLower(cmdline.String()), "jboss") || strings.Contains(strings.ToLower(cmdline.String()), "wildfly") {
if is, err = core.NewJbossFindler().SingleVerify(ctx, envPath, ps, func(p *core.Process, finder core.SoftwareFinder) {
p.SetFinder(finder)
}); err == nil && is {
hit = true
}
}
if strings.Contains(strings.ToLower(cmdline.String()), "couchdb") {
if is, err = core.NewCouchdbFindler().SingleVerify(ctx, envPath, ps, func(p *core.Process, finder core.SoftwareFinder) {
p.SetFinder(finder)
}); err == nil && is {
hit = true
}
}
return nil
}
if len(onlys) > 0 {
for _, only := range onlys {
switch v := only.(type) {
case core.SwType:
validContainers(core.Finders[v])
case core.SwName:
for _, finders := range core.Finders {
if finder, ok := finders[v]; ok {
validContainer(finder)
}
}
}
}
} else {
for _, process := range c.Processes {
_ = priorityMarking(c.EnvPath, process)
}
for _, finders := range core.Finders {
validContainers(finders)
}
}
if hit {
var softwaresByte []byte
softwares, err = core.GetSoftware(ctx, c)
if err != nil {
return
}
err = Check(softwares)
if err != nil {
return
}
softwaresByte, err = jsoniter.Marshal(softwares)
if err != nil {
return
}
l.ctrCache.Set([]byte(c.Id), softwaresByte, 0)
}
return
}
func Check(sfs []*core.Software) error {
pattern := regexp.MustCompile(`[vV]*\d+\.\S+`)
for _, sf := range sfs {
if !pattern.MatchString(sf.Version) {
return errors.New(sf.Name + "-version " + sf.Version + " is not valid")
}
if strings.Contains(sf.ConfigPath, "find:") {
return errors.New(sf.Name + "-config " + sf.ConfigPath + " is not valid")
}
}
return nil
}