/
chaos.go
287 lines (248 loc) · 7.76 KB
/
chaos.go
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package chaos
import (
"bufio"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"strconv"
"strings"
"time"
jsoniter "github.com/json-iterator/go"
"github.com/pkg/errors"
"github.com/projectdiscovery/ratelimit"
"github.com/projectdiscovery/retryablehttp-go"
pdhttputil "github.com/projectdiscovery/utils/http"
)
// Client is a client for making requests to chaos API
type Client struct {
apiKey string
httpClient *retryablehttp.Client
ratelimit *ratelimit.Limiter
}
// do adds apiKey and implements rate limit
func (c *Client) do(request *retryablehttp.Request) (*http.Response, error) {
request.Header.Set("Authorization", c.apiKey)
if c.ratelimit != nil {
c.ratelimit.Take()
}
resp, err := c.httpClient.Do(request)
if err != nil {
if c.ratelimit == nil {
rl := resp.Header.Get("X-Ratelimit-Limit")
rlMax, er := strconv.Atoi(rl)
if er == nil {
// if er then ratelimit header is not present. Hence no rate limit
c.ratelimit = ratelimit.New(context.Background(), int64(rlMax), time.Minute)
}
}
}
return resp, err
}
// New creates a new client for chaos API communication
func New(apiKey string) *Client {
httpclient := retryablehttp.NewClient(retryablehttp.DefaultOptionsSingle)
return &Client{httpClient: httpclient, apiKey: apiKey}
}
// GetStatisticsRequest is the request for a domain statistics
type GetStatisticsRequest struct {
Domain string
}
// GetStatisticsResponse is the response for a statistics request
type GetStatisticsResponse struct {
Subdomains uint64 `json:"subdomains"`
}
// GetStatistics returns the statistics for a given domain.
func (c *Client) GetStatistics(req *GetStatisticsRequest) (*GetStatisticsResponse, error) {
request, err := retryablehttp.NewRequest(http.MethodGet, fmt.Sprintf("https://dns.projectdiscovery.io/dns/%s", req.Domain), nil)
if err != nil {
return nil, errors.Wrap(err, "could not create request.")
}
resp, err := c.do(request)
if err != nil {
return nil, errors.Wrap(err, "could not make request.")
}
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "could not read response.")
}
return nil, InvalidStatusCodeError{StatusCode: resp.StatusCode, Message: body}
}
defer pdhttputil.DrainResponseBody(resp)
response := GetStatisticsResponse{}
err = jsoniter.NewDecoder(resp.Body).Decode(&response)
if err != nil {
return nil, errors.Wrap(err, "could not unmarshal results.")
}
return &response, nil
}
// SubdomainsRequest is the request for a host subdomains.
type SubdomainsRequest struct {
Domain string
OutputFormat string
}
// Result is the response for a host subdomains.
type Result struct {
Subdomain string
Reader *io.ReadCloser
Error error
}
// GetSubdomains returns the subdomains for a given domain.
func (c *Client) GetSubdomains(req *SubdomainsRequest) chan *Result {
results := make(chan *Result)
go func(results chan *Result) {
defer close(results)
request, err := retryablehttp.NewRequest(http.MethodGet, fmt.Sprintf("https://dns.projectdiscovery.io/dns/%s/subdomains", req.Domain), nil)
if err != nil {
results <- &Result{Error: errors.Wrap(err, "could not create request.")}
return
}
resp, err := c.do(request)
if err != nil {
results <- &Result{Error: errors.Wrap(err, "could not make request.")}
return
}
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
results <- &Result{Error: errors.Wrap(err, "could not read response.")}
return
}
pdhttputil.DrainResponseBody(resp)
results <- &Result{Error: InvalidStatusCodeError{StatusCode: resp.StatusCode, Message: body}}
return
}
switch req.OutputFormat {
case "json":
results <- &Result{Reader: &resp.Body}
default:
defer pdhttputil.DrainResponseBody(resp)
d := json.NewDecoder(resp.Body)
if !checkToken(d, "{") {
return
}
if !checkToken(d, "domain") {
return
}
if !checkToken(d, req.Domain) {
return
}
if !checkToken(d, "subdomains") {
return
}
if !checkToken(d, "[") {
return
}
for d.More() {
// process all the tokens within the list
token, err := d.Token()
if token == nil || err != nil {
break
}
results <- &Result{Subdomain: fmt.Sprintf("%s", token)}
}
}
}(results)
return results
}
func checkToken(d *json.Decoder, value string) bool {
token, err := d.Token()
return strings.EqualFold(fmt.Sprint(token), value) && err == nil
}
type BBQData struct {
Domain string `json:"domain"`
Subdomain string `json:"subdomain"`
StatusCode string `json:"dns-status-code"`
A []string `json:"a,omitempty"`
CNAME []string `json:"cname,omitempty"`
AAAA []string `json:"aaaa,omitempty"`
MX []string `json:"mx,omitempty"`
SOA []string `json:"soa,omitempty"`
NS []string `json:"ns,omitempty"`
Wildcard bool `json:"wildcard"`
HTTPUrl string `json:"http_url,omitempty"`
HTTPStatusCode int `json:"http_status_code,omitempty"`
HTTPContentLength int `json:"http_content_length,omitempty"`
HTTPTitle string `json:"http_title,omitempty"`
}
type BBQResult struct {
Data []byte
Reader *io.ReadCloser
Error error
}
func (c *Client) GetBBQSubdomains(req *SubdomainsRequest) chan *BBQResult {
results := make(chan *BBQResult)
go func(results chan *BBQResult) {
defer close(results)
request, err := retryablehttp.NewRequest(http.MethodGet, fmt.Sprintf("https://dns.projectdiscovery.io/dns/%s/public-recon-data", req.Domain), nil)
if err != nil {
results <- &BBQResult{Error: errors.Wrap(err, "could not create request.")}
return
}
resp, err := c.do(request)
if err != nil {
results <- &BBQResult{Error: errors.Wrap(err, "could not make request.")}
return
}
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
results <- &BBQResult{Error: errors.Wrap(err, "could not read response.")}
return
}
pdhttputil.DrainResponseBody(resp)
results <- &BBQResult{Error: InvalidStatusCodeError{StatusCode: resp.StatusCode, Message: body}}
return
}
switch req.OutputFormat {
case "json":
results <- &BBQResult{Reader: &resp.Body}
default:
defer pdhttputil.DrainResponseBody(resp)
scanner := bufio.NewScanner(resp.Body)
const maxCapacity = 1024 * 1024
buf := make([]byte, maxCapacity)
scanner.Buffer(buf, maxCapacity)
for scanner.Scan() {
results <- &BBQResult{Data: scanner.Bytes()}
}
}
}(results)
return results
}
// PutSubdomainsRequest is the request for uploading subdomains.
type PutSubdomainsRequest struct {
Contents io.Reader
}
// PutSubdomainsResponse is the response for a subdomains upload request.
type PutSubdomainsResponse struct{}
// PutSubdomains uploads the subdomains to Chaos API.
func (c *Client) PutSubdomains(req *PutSubdomainsRequest) (*PutSubdomainsResponse, error) {
request, err := retryablehttp.NewRequest(http.MethodPost, "https://dns.projectdiscovery.io/dns/add", req.Contents)
if err != nil {
return nil, errors.Wrap(err, "could not create request.")
}
resp, err := c.do(request)
if err != nil {
return nil, errors.Wrap(err, "could not make request.")
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "could not read response.")
}
return nil, InvalidStatusCodeError{StatusCode: resp.StatusCode, Message: body}
}
_, _ = io.Copy(io.Discard, resp.Body)
return &PutSubdomainsResponse{}, nil
}
type InvalidStatusCodeError struct {
StatusCode int
Message []byte
}
func (e InvalidStatusCodeError) Error() string {
return fmt.Sprintf("invalid status code received: %d - %s", e.StatusCode, e.Message)
}