54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
// ©AngelaMos | 2026
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// http.go
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package cve
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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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)
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const (
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headerAccept = "Accept"
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acceptJSON = "application/json"
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maxJSONBytes = 32 << 20
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)
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type statusError struct {
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code int
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url string
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}
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func (e *statusError) Error() string {
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return fmt.Sprintf("cve: GET %s: status %d", e.url, e.code)
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}
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func getJSON(ctx context.Context, client *http.Client, url string, header http.Header, out any) error {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return fmt.Errorf("cve: build request %s: %w", url, err)
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}
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req.Header.Set(headerAccept, acceptJSON)
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for key, values := range header {
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req.Header[key] = values
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}
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resp, err := client.Do(req)
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if err != nil {
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return fmt.Errorf("cve: GET %s: %w", url, err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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_, _ = io.Copy(io.Discard, io.LimitReader(resp.Body, maxJSONBytes))
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return &statusError{code: resp.StatusCode, url: url}
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}
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if err := json.NewDecoder(io.LimitReader(resp.Body, maxJSONBytes)).Decode(out); err != nil {
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return fmt.Errorf("cve: decode %s: %w", url, err)
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}
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return nil
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}
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