117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
package main
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
const httpClientTimeout = 30 * time.Minute
|
|
|
|
var httpClient = &http.Client{Timeout: httpClientTimeout}
|
|
|
|
// downloadReal streams url -> dest. Returns true on success.
|
|
func downloadReal(url, dest string) bool {
|
|
fmt.Printf(" Downloading %s ...\n", filepath.Base(url))
|
|
req, err := http.NewRequest(http.MethodGet, url, nil)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Download failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
resp, err := httpClient.Do(req)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Download failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
defer resp.Body.Close()
|
|
if resp.StatusCode/100 != 2 {
|
|
errLog(fmt.Sprintf("Download failed for %s: HTTP %d", url, resp.StatusCode))
|
|
return false
|
|
}
|
|
f, err := os.Create(dest)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Download failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
defer f.Close()
|
|
if _, err := io.Copy(f, resp.Body); err != nil {
|
|
errLog(fmt.Sprintf("Download failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// fetchJSONReal GETs url with the GitHub API Accept header and decodes the body
|
|
// into v. Returns true on success.
|
|
func fetchJSONReal(url string, v any) bool {
|
|
req, err := http.NewRequest(http.MethodGet, url, nil)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("API request failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
req.Header.Set("Accept", "application/vnd.github+json")
|
|
if tok := os.Getenv("GITHUB_TOKEN"); tok != "" {
|
|
req.Header.Set("Authorization", "Bearer "+tok)
|
|
}
|
|
resp, err := httpClient.Do(req)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("API request failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
defer resp.Body.Close()
|
|
if resp.StatusCode/100 != 2 {
|
|
errLog(fmt.Sprintf("API request failed for %s: HTTP %d", url, resp.StatusCode))
|
|
return false
|
|
}
|
|
if err := json.NewDecoder(resp.Body).Decode(v); err != nil {
|
|
errLog(fmt.Sprintf("API request failed for %s: %v", url, err))
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// fetchTextReal returns the trimmed body of url. Returns empty string on failure.
|
|
func fetchTextReal(url string) string {
|
|
req, err := http.NewRequest(http.MethodGet, url, nil)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Fetch failed for %s: %v", url, err))
|
|
return ""
|
|
}
|
|
resp, err := httpClient.Do(req)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Fetch failed for %s: %v", url, err))
|
|
return ""
|
|
}
|
|
defer resp.Body.Close()
|
|
if resp.StatusCode/100 != 2 {
|
|
errLog(fmt.Sprintf("Fetch failed for %s: HTTP %d", url, resp.StatusCode))
|
|
return ""
|
|
}
|
|
b, err := io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
errLog(fmt.Sprintf("Fetch failed for %s: %v", url, err))
|
|
return ""
|
|
}
|
|
return strings.TrimSpace(string(b))
|
|
}
|
|
|
|
func sha256Of(path string) (string, error) {
|
|
f, err := os.Open(path)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer f.Close()
|
|
h := sha256.New()
|
|
if _, err := io.Copy(h, f); err != nil {
|
|
return "", err
|
|
}
|
|
return hex.EncodeToString(h.Sum(nil)), nil
|
|
}
|