282c145a43
- StackOverflowSource searches SE API v2.3 search/excerpts endpoint - RedditSource searches Reddit JSON API with custom User-Agent - HackerNewsSource searches Algolia HN API for comments - All credentialless, use ciLogKeyPattern for key detection - Tests use httptest mock servers with API key patterns
113 lines
2.9 KiB
Go
113 lines
2.9 KiB
Go
package sources
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"time"
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"golang.org/x/time/rate"
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"github.com/salvacybersec/keyhunter/pkg/providers"
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"github.com/salvacybersec/keyhunter/pkg/recon"
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)
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// StackOverflowSource searches Stack Exchange API for questions and answers
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// containing leaked API keys. Developers frequently paste credentials in
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// code examples when asking for help debugging API integrations.
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type StackOverflowSource struct {
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BaseURL string
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Registry *providers.Registry
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Limiters *recon.LimiterRegistry
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Client *Client
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}
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var _ recon.ReconSource = (*StackOverflowSource)(nil)
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func (s *StackOverflowSource) Name() string { return "stackoverflow" }
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func (s *StackOverflowSource) RateLimit() rate.Limit { return rate.Every(2 * time.Second) }
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func (s *StackOverflowSource) Burst() int { return 3 }
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func (s *StackOverflowSource) RespectsRobots() bool { return false }
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func (s *StackOverflowSource) Enabled(_ recon.Config) bool { return true }
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// stackExchangeResponse represents the Stack Exchange API v2.3 search/excerpts response.
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type stackExchangeResponse struct {
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Items []stackExchangeItem `json:"items"`
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}
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type stackExchangeItem struct {
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Body string `json:"body"`
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Excerpt string `json:"excerpt"`
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QuestionID int `json:"question_id"`
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}
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func (s *StackOverflowSource) Sweep(ctx context.Context, _ string, out chan<- recon.Finding) error {
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base := s.BaseURL
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if base == "" {
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base = "https://api.stackexchange.com"
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}
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client := s.Client
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if client == nil {
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client = NewClient()
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}
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queries := BuildQueries(s.Registry, "stackoverflow")
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if len(queries) == 0 {
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return nil
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}
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for _, q := range queries {
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if err := ctx.Err(); err != nil {
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return err
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}
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if s.Limiters != nil {
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if err := s.Limiters.Wait(ctx, s.Name(), s.RateLimit(), s.Burst(), false); err != nil {
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return err
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}
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}
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searchURL := fmt.Sprintf("%s/2.3/search/excerpts?order=desc&sort=relevance&q=%s&site=stackoverflow",
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base, url.QueryEscape(q))
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, searchURL, nil)
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if err != nil {
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continue
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}
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req.Header.Set("Accept", "application/json")
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resp, err := client.Do(ctx, req)
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if err != nil {
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continue
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}
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body, err := io.ReadAll(io.LimitReader(resp.Body, 256*1024))
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_ = resp.Body.Close()
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if err != nil {
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continue
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}
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var result stackExchangeResponse
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if err := json.Unmarshal(body, &result); err != nil {
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continue
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}
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for _, item := range result.Items {
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content := item.Body + " " + item.Excerpt
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if ciLogKeyPattern.MatchString(content) {
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itemURL := fmt.Sprintf("https://stackoverflow.com/q/%d", item.QuestionID)
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out <- recon.Finding{
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ProviderName: q,
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Source: itemURL,
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SourceType: "recon:stackoverflow",
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Confidence: "medium",
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DetectedAt: time.Now(),
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}
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}
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}
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}
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return nil
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}
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