mirror of
https://github.com/projectdiscovery/nuclei.git
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5b89811b90
* support for concurrent nuclei engines * clarify LfaAllowed race * remove unused mutex * update LfaAllowed logic to prevent races until it can be reworked for per-execution ID * Update pkg/templates/parser.go Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> * debug tests * debug gh action * fixig gh template test * using atomic * using synclockmap * restore tests concurrency * lint * wiring executionId in js fs --------- Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> Co-authored-by: Mzack9999 <mzack9999@protonmail.com>
109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package dnsclientpool
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import (
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"strconv"
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"strings"
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"sync"
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"github.com/pkg/errors"
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"github.com/projectdiscovery/nuclei/v3/pkg/types"
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"github.com/projectdiscovery/retryabledns"
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mapsutil "github.com/projectdiscovery/utils/maps"
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)
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var (
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clientPool *mapsutil.SyncLockMap[string, *retryabledns.Client]
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normalClient *retryabledns.Client
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m sync.Mutex
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)
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// defaultResolvers contains the list of resolvers known to be trusted.
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var defaultResolvers = []string{
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"1.1.1.1:53", // Cloudflare
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"1.0.0.1:53", // Cloudflare
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"8.8.8.8:53", // Google
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"8.8.4.4:53", // Google
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}
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// Init initializes the client pool implementation
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func Init(options *types.Options) error {
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m.Lock()
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defer m.Unlock()
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// Don't create clients if already created in the past.
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if normalClient != nil {
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return nil
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}
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clientPool = mapsutil.NewSyncLockMap[string, *retryabledns.Client]()
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resolvers := defaultResolvers
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if len(options.InternalResolversList) > 0 {
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resolvers = options.InternalResolversList
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}
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var err error
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normalClient, err = retryabledns.New(resolvers, 1)
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if err != nil {
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return errors.Wrap(err, "could not create dns client")
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}
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return nil
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}
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func getNormalClient() *retryabledns.Client {
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m.Lock()
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defer m.Unlock()
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return normalClient
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}
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// Configuration contains the custom configuration options for a client
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type Configuration struct {
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// Retries contains the retries for the dns client
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Retries int
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// Resolvers contains the specific per request resolvers
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Resolvers []string
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// Proxy contains the proxy to use for the dns client
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Proxy string
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}
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// Hash returns the hash of the configuration to allow client pooling
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func (c *Configuration) Hash() string {
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builder := &strings.Builder{}
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builder.WriteString("r")
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builder.WriteString(strconv.Itoa(c.Retries))
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builder.WriteString("l")
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builder.WriteString(strings.Join(c.Resolvers, ""))
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builder.WriteString("p")
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builder.WriteString(c.Proxy)
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hash := builder.String()
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return hash
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}
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// Get creates or gets a client for the protocol based on custom configuration
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func Get(options *types.Options, configuration *Configuration) (*retryabledns.Client, error) {
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if (configuration.Retries <= 1) && len(configuration.Resolvers) == 0 {
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return getNormalClient(), nil
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}
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hash := configuration.Hash()
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if client, ok := clientPool.Get(hash); ok {
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return client, nil
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}
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resolvers := defaultResolvers
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if len(options.InternalResolversList) > 0 {
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resolvers = options.InternalResolversList
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} else if len(configuration.Resolvers) > 0 {
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resolvers = configuration.Resolvers
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}
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client, err := retryabledns.NewWithOptions(retryabledns.Options{
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BaseResolvers: resolvers,
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MaxRetries: configuration.Retries,
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Proxy: options.AliveSocksProxy,
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})
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if err != nil {
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return nil, errors.Wrap(err, "could not create dns client")
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}
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_ = clientPool.Set(hash, client)
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return client, nil
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}
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