2024-07-12 17:23:44 +02:00

535 lines
14 KiB
Go

// package list implements a hybrid hmap/filekv backed input provider
// for nuclei that can either stream or store results using different kv stores.
package list
import (
"bufio"
"context"
"fmt"
"io"
"os"
"regexp"
"strings"
"sync"
"time"
"github.com/pkg/errors"
"github.com/projectdiscovery/gologger"
"github.com/projectdiscovery/hmap/filekv"
"github.com/projectdiscovery/hmap/store/hybrid"
"github.com/projectdiscovery/mapcidr/asn"
providerTypes "github.com/projectdiscovery/nuclei/v3/pkg/input/types"
"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/contextargs"
"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/uncover"
"github.com/projectdiscovery/nuclei/v3/pkg/types"
"github.com/projectdiscovery/nuclei/v3/pkg/utils/expand"
uncoverlib "github.com/projectdiscovery/uncover"
fileutil "github.com/projectdiscovery/utils/file"
iputil "github.com/projectdiscovery/utils/ip"
readerutil "github.com/projectdiscovery/utils/reader"
sliceutil "github.com/projectdiscovery/utils/slice"
urlutil "github.com/projectdiscovery/utils/url"
)
const DefaultMaxDedupeItemsCount = 10000
// ListInputProvider is a hmap/filekv backed nuclei ListInputProvider provider
// it supports list type of input ex: urls,file,stdin,uncover,etc. (i.e just url not complete request/response)
type ListInputProvider struct {
ipOptions *ipOptions
inputCount int64
excludedCount int64
dupeCount int64
skippedCount int64
hostMap *hybrid.HybridMap
excludedHosts map[string]struct{}
hostMapStream *filekv.FileDB
hostMapStreamOnce sync.Once
sync.Once
}
// Options is a wrapper around types.Options structure
type Options struct {
// Options contains options for hmap provider
Options *types.Options
// NotFoundCallback is called for each not found target
// This overrides error handling for not found target
NotFoundCallback func(template string) bool
}
// New creates a new hmap backed nuclei Input Provider
// and initializes it based on the passed options Model.
func New(opts *Options) (*ListInputProvider, error) {
options := opts.Options
hm, err := hybrid.New(hybrid.DefaultDiskOptions)
if err != nil {
return nil, errors.Wrap(err, "could not create temporary input file")
}
input := &ListInputProvider{
hostMap: hm,
ipOptions: &ipOptions{
ScanAllIPs: options.ScanAllIPs,
IPV4: sliceutil.Contains(options.IPVersion, "4"),
IPV6: sliceutil.Contains(options.IPVersion, "6"),
},
excludedHosts: make(map[string]struct{}),
}
if options.Stream {
fkvOptions := filekv.DefaultOptions
fkvOptions.MaxItems = DefaultMaxDedupeItemsCount
if tmpFileName, err := fileutil.GetTempFileName(); err != nil {
return nil, errors.Wrap(err, "could not create temporary input file")
} else {
fkvOptions.Path = tmpFileName
}
fkv, err := filekv.Open(fkvOptions)
if err != nil {
return nil, errors.Wrap(err, "could not create temporary unsorted input file")
}
input.hostMapStream = fkv
}
if initErr := input.initializeInputSources(opts); initErr != nil {
return nil, initErr
}
if input.excludedCount > 0 {
gologger.Info().Msgf("Number of hosts excluded from input: %d", input.excludedCount)
}
if input.dupeCount > 0 {
gologger.Info().Msgf("Supplied input was automatically deduplicated (%d removed).", input.dupeCount)
}
if input.skippedCount > 0 {
gologger.Info().Msgf("Number of hosts skipped from input due to exclusion: %d", input.skippedCount)
}
return input, nil
}
// Count returns the input count
func (i *ListInputProvider) Count() int64 {
return i.inputCount
}
// Iterate over all inputs in order
func (i *ListInputProvider) Iterate(callback func(value *contextargs.MetaInput) bool) {
if i.hostMapStream != nil {
i.hostMapStreamOnce.Do(func() {
if err := i.hostMapStream.Process(); err != nil {
gologger.Warning().Msgf("error in stream mode processing: %s\n", err)
}
})
}
callbackFunc := func(k, _ []byte) error {
metaInput := contextargs.NewMetaInput()
if err := metaInput.Unmarshal(string(k)); err != nil {
return err
}
if !callback(metaInput) {
return io.EOF
}
return nil
}
if i.hostMapStream != nil {
_ = i.hostMapStream.Scan(callbackFunc)
} else {
i.hostMap.Scan(callbackFunc)
}
}
// Set normalizes and stores passed input values
func (i *ListInputProvider) Set(value string) {
URL := strings.TrimSpace(value)
if URL == "" {
return
}
// parse hostname if url is given
urlx, err := urlutil.Parse(URL)
if err != nil || (urlx != nil && urlx.Host == "") {
gologger.Debug().Label("url").MsgFunc(func() string {
if err != nil {
return fmt.Sprintf("failed to parse url %v got %v skipping ip selection", URL, err)
}
return fmt.Sprintf("got empty hostname for %v skipping ip selection", URL)
})
metaInput := contextargs.NewMetaInput()
metaInput.Input = URL
i.setItem(metaInput)
return
}
// Check if input is ip or hostname
if iputil.IsIP(urlx.Hostname()) {
metaInput := contextargs.NewMetaInput()
metaInput.Input = URL
i.setItem(metaInput)
return
}
if i.ipOptions.ScanAllIPs {
// scan all ips
dnsData, err := protocolstate.Dialer.GetDNSData(urlx.Hostname())
if err == nil {
if (len(dnsData.A) + len(dnsData.AAAA)) > 0 {
var ips []string
if i.ipOptions.IPV4 {
ips = append(ips, dnsData.A...)
}
if i.ipOptions.IPV6 {
ips = append(ips, dnsData.AAAA...)
}
for _, ip := range ips {
if ip == "" {
continue
}
metaInput := contextargs.NewMetaInput()
metaInput.Input = value
metaInput.CustomIP = ip
i.setItem(metaInput)
}
return
} else {
gologger.Debug().Msgf("scanAllIps: no ip's found reverting to default")
}
} else {
// failed to scanallips falling back to defaults
gologger.Debug().Msgf("scanAllIps: dns resolution failed: %v", err)
}
}
ips := []string{}
// only scan the target but ipv6 if it has one
if i.ipOptions.IPV6 {
dnsData, err := protocolstate.Dialer.GetDNSData(urlx.Hostname())
if err == nil && len(dnsData.AAAA) > 0 {
// pick/ prefer 1st
ips = append(ips, dnsData.AAAA[0])
} else {
gologger.Warning().Msgf("target does not have ipv6 address falling back to ipv4 %v\n", err)
}
}
if i.ipOptions.IPV4 {
// if IPV4 is enabled do not specify ip let dialer handle it
ips = append(ips, "")
}
for _, ip := range ips {
metaInput := contextargs.NewMetaInput()
if ip != "" {
metaInput.Input = URL
metaInput.CustomIP = ip
i.setItem(metaInput)
} else {
metaInput.Input = URL
i.setItem(metaInput)
}
}
}
// SetWithProbe only sets the input if it is live
func (i *ListInputProvider) SetWithProbe(value string, probe providerTypes.InputLivenessProbe) error {
probedValue, err := probe.ProbeURL(value)
if err != nil {
return err
}
i.Set(probedValue)
return nil
}
// SetWithExclusions normalizes and stores passed input values if not excluded
func (i *ListInputProvider) SetWithExclusions(value string) error {
URL := strings.TrimSpace(value)
if URL == "" {
return nil
}
if i.isExcluded(URL) {
i.skippedCount++
return nil
}
i.Set(URL)
return nil
}
// ListInputProvider is a hmap/filekv backed nuclei ListInputProvider provider
func (i *ListInputProvider) InputType() string {
return "ListInputProvider"
}
// Close closes the input provider
func (i *ListInputProvider) Close() {
i.hostMap.Close()
if i.hostMapStream != nil {
i.hostMapStream.Close()
}
}
// initializeInputSources initializes the input sources for hmap input
func (i *ListInputProvider) initializeInputSources(opts *Options) error {
options := opts.Options
// Handle targets flags
for _, target := range options.Targets {
switch {
case iputil.IsCIDR(target):
ips := expand.CIDR(target)
i.addTargets(ips)
case asn.IsASN(target):
ips := expand.ASN(target)
i.addTargets(ips)
default:
i.Set(target)
}
}
// Handle stdin
if options.Stdin {
i.scanInputFromReader(readerutil.TimeoutReader{Reader: os.Stdin, Timeout: time.Duration(options.InputReadTimeout)})
}
// Handle target file
if options.TargetsFilePath != "" {
input, inputErr := os.Open(options.TargetsFilePath)
if inputErr != nil {
// Handle cloud based input here.
if opts.NotFoundCallback == nil || !opts.NotFoundCallback(options.TargetsFilePath) {
return errors.Wrap(inputErr, "could not open targets file")
}
}
if input != nil {
i.scanInputFromReader(input)
input.Close()
}
}
if options.Uncover && options.UncoverQuery != nil {
gologger.Info().Msgf("Running uncover query against: %s", strings.Join(options.UncoverEngine, ","))
uncoverOpts := &uncoverlib.Options{
Agents: options.UncoverEngine,
Queries: options.UncoverQuery,
Limit: options.UncoverLimit,
MaxRetry: options.Retries,
Timeout: options.Timeout,
RateLimit: uint(options.UncoverRateLimit),
RateLimitUnit: time.Minute, // default unit is minute
}
ch, err := uncover.GetTargetsFromUncover(context.TODO(), options.UncoverField, uncoverOpts)
if err != nil {
return err
}
for c := range ch {
i.Set(c)
}
}
if len(options.ExcludeTargets) > 0 {
for _, target := range options.ExcludeTargets {
switch {
case iputil.IsCIDR(target):
ips := expand.CIDR(target)
i.removeTargets(ips)
case asn.IsASN(target):
ips := expand.ASN(target)
i.removeTargets(ips)
default:
i.Del(target)
}
}
}
return nil
}
// scanInputFromReader scans a line of input from reader and passes it for storage
func (i *ListInputProvider) scanInputFromReader(reader io.Reader) {
scanner := bufio.NewScanner(reader)
for scanner.Scan() {
item := scanner.Text()
switch {
case iputil.IsCIDR(item):
ips := expand.CIDR(item)
i.addTargets(ips)
case asn.IsASN(item):
ips := expand.ASN(item)
i.addTargets(ips)
default:
i.Set(item)
}
}
}
// isExcluded checks if a URL is in the exclusion list
func (i *ListInputProvider) isExcluded(URL string) bool {
metaInput := contextargs.NewMetaInput()
metaInput.Input = URL
key, err := metaInput.MarshalString()
if err != nil {
gologger.Warning().Msgf("%s\n", err)
return false
}
_, exists := i.excludedHosts[key]
return exists
}
func (i *ListInputProvider) Del(value string) {
URL := strings.TrimSpace(value)
if URL == "" {
return
}
// parse hostname if url is given
urlx, err := urlutil.Parse(URL)
if err != nil || (urlx != nil && urlx.Host == "") {
gologger.Debug().Label("url").MsgFunc(func() string {
if err != nil {
return fmt.Sprintf("failed to parse url %v got %v skipping ip selection", URL, err)
}
return fmt.Sprintf("got empty hostname for %v skipping ip selection", URL)
})
metaInput := contextargs.NewMetaInput()
metaInput.Input = URL
i.delItem(metaInput)
return
}
// Check if input is ip or hostname
if iputil.IsIP(urlx.Hostname()) {
metaInput := contextargs.NewMetaInput()
metaInput.Input = URL
i.delItem(metaInput)
return
}
if i.ipOptions.ScanAllIPs {
// scan all ips
dnsData, err := protocolstate.Dialer.GetDNSData(urlx.Hostname())
if err == nil {
if (len(dnsData.A) + len(dnsData.AAAA)) > 0 {
var ips []string
if i.ipOptions.IPV4 {
ips = append(ips, dnsData.A...)
}
if i.ipOptions.IPV6 {
ips = append(ips, dnsData.AAAA...)
}
for _, ip := range ips {
if ip == "" {
continue
}
metaInput := contextargs.NewMetaInput()
metaInput.Input = value
metaInput.CustomIP = ip
i.delItem(metaInput)
}
return
} else {
gologger.Debug().Msgf("scanAllIps: no ip's found reverting to default")
}
} else {
// failed to scanallips falling back to defaults
gologger.Debug().Msgf("scanAllIps: dns resolution failed: %v", err)
}
}
ips := []string{}
// only scan the target but ipv6 if it has one
if i.ipOptions.IPV6 {
dnsData, err := protocolstate.Dialer.GetDNSData(urlx.Hostname())
if err == nil && len(dnsData.AAAA) > 0 {
// pick/ prefer 1st
ips = append(ips, dnsData.AAAA[0])
} else {
gologger.Warning().Msgf("target does not have ipv6 address falling back to ipv4 %v\n", err)
}
}
if i.ipOptions.IPV4 {
// if IPV4 is enabled do not specify ip let dialer handle it
ips = append(ips, "")
}
for _, ip := range ips {
metaInput := contextargs.NewMetaInput()
if ip != "" {
metaInput.Input = URL
metaInput.CustomIP = ip
i.delItem(metaInput)
} else {
metaInput.Input = URL
i.delItem(metaInput)
}
}
}
// setItem in the kv store
func (i *ListInputProvider) setItem(metaInput *contextargs.MetaInput) {
key, err := metaInput.MarshalString()
if err != nil {
gologger.Warning().Msgf("%s\n", err)
return
}
if _, ok := i.hostMap.Get(key); ok {
i.dupeCount++
return
}
i.inputCount++ // tracks target count
_ = i.hostMap.Set(key, nil)
if i.hostMapStream != nil {
i.setHostMapStream(key)
}
}
// setItem in the kv store
func (i *ListInputProvider) delItem(metaInput *contextargs.MetaInput) {
targetUrl, err := urlutil.ParseURL(metaInput.Input, true)
if err != nil {
gologger.Warning().Msgf("%s\n", err)
return
}
i.hostMap.Scan(func(k, _ []byte) error {
var tmpMetaInput contextargs.MetaInput
if err := tmpMetaInput.Unmarshal(string(k)); err != nil {
return err
}
tmpKey, err := tmpMetaInput.MarshalString()
if err != nil {
return err
}
tmpUrl, err := urlutil.ParseURL(tmpMetaInput.Input, true)
if err != nil {
return err
}
matched, _ := regexp.MatchString(metaInput.Input, tmpUrl.Host)
if tmpUrl.Host == targetUrl.Host || matched {
_ = i.hostMap.Del(tmpKey)
i.excludedHosts[tmpKey] = struct{}{}
i.excludedCount++
i.inputCount--
}
return nil
})
}
// setHostMapStream sets item in stream mode
func (i *ListInputProvider) setHostMapStream(data string) {
if _, err := i.hostMapStream.Merge([][]byte{[]byte(data)}); err != nil {
gologger.Warning().Msgf("%s\n", err)
return
}
}
func (i *ListInputProvider) addTargets(targets []string) {
for _, target := range targets {
i.Set(target)
}
}
func (i *ListInputProvider) removeTargets(targets []string) {
for _, target := range targets {
metaInput := contextargs.NewMetaInput()
metaInput.Input = target
i.delItem(metaInput)
}
}