23613150f6
- MavenSource queries Maven Central Solr API for provider keyword matches - NuGetSource queries NuGet gallery search API with projectUrl fallback - Both sources: httptest fixtures, ctx cancellation, metadata tests
116 lines
2.8 KiB
Go
116 lines
2.8 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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"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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// NuGetSource searches the NuGet gallery for .NET packages matching provider
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// keywords. The NuGet search API is public and requires no authentication.
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type NuGetSource 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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// Compile-time assertion that NuGetSource satisfies recon.ReconSource.
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var _ recon.ReconSource = (*NuGetSource)(nil)
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func (s *NuGetSource) Name() string { return "nuget" }
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func (s *NuGetSource) RateLimit() rate.Limit { return rate.Every(1 * time.Second) }
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func (s *NuGetSource) Burst() int { return 3 }
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func (s *NuGetSource) RespectsRobots() bool { return false }
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// Enabled always returns true: NuGet search requires no credentials.
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func (s *NuGetSource) Enabled(_ recon.Config) bool { return true }
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// Sweep queries NuGet's search API for each provider keyword and emits a
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// Finding per matching package.
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func (s *NuGetSource) 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://azuresearch-usnc.nuget.org"
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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, "nuget")
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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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endpoint := fmt.Sprintf("%s/query?q=%s&take=20",
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base, url.QueryEscape(q))
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
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if err != nil {
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return fmt.Errorf("nuget: build request: %w", err)
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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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var parsed nugetSearchResponse
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decErr := json.NewDecoder(resp.Body).Decode(&parsed)
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_ = resp.Body.Close()
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if decErr != nil {
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continue
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}
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for _, pkg := range parsed.Data {
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if err := ctx.Err(); err != nil {
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return err
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}
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src := pkg.ProjectURL
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if src == "" {
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src = fmt.Sprintf("https://www.nuget.org/packages/%s", pkg.ID)
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}
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select {
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case out <- recon.Finding{
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Source: src,
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SourceType: "recon:nuget",
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Confidence: "low",
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DetectedAt: time.Now(),
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}:
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case <-ctx.Done():
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return ctx.Err()
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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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type nugetSearchResponse struct {
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Data []nugetPackage `json:"data"`
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}
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type nugetPackage struct {
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ID string `json:"id"`
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Version string `json:"version"`
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ProjectURL string `json:"projectUrl"`
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}
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