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add pkg.machengine.org implementation
Signed-off-by: Stephen Gutekanst <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| package wrench | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "os" | ||
| "path" | ||
| "regexp" | ||
| "strings" | ||
|
|
||
| "github.com/hexops/wrench/internal/wrench/scripts" | ||
| ) | ||
|
|
||
| func (b *Bot) httpMuxPkgProxy(handler func(prefix string, handle handlerFunc) http.Handler) http.Handler { | ||
| mux := http.NewServeMux() | ||
| mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | ||
| if r.URL.Path == "/" { | ||
| handler("general", b.httpPkgRoot).ServeHTTP(w, r) | ||
| return | ||
| } | ||
| if strings.HasPrefix(r.URL.Path, "/zig") { | ||
| handler("zig", b.httpPkgZig).ServeHTTP(w, r) | ||
| return | ||
| } | ||
| handler("pkg", b.httpPkgPkg).ServeHTTP(w, r) | ||
| return | ||
| }) | ||
| return mux | ||
| } | ||
|
|
||
| func (b *Bot) httpPkgRoot(w http.ResponseWriter, r *http.Request) error { | ||
| w.Header().Set("Content-Type", "text/html; charset=utf-8") | ||
| fmt.Fprintf(w, `<h1>pkg.machengine.org</h1>`) | ||
| return nil | ||
| } | ||
|
|
||
| // https://pkg.machengine.org/zig/<file> | ||
| // -> https://ziglang.org/builds/<file> | ||
| func (b *Bot) httpPkgZig(w http.ResponseWriter, r *http.Request) error { | ||
| split := strings.Split(r.URL.Path, "/") | ||
| if len(split) == 0 { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "invalid path\n") | ||
| return nil | ||
| } | ||
| fname := split[len(split)-1] | ||
|
|
||
| // Validate this is an allowed file | ||
| validate := fname | ||
| validate = strings.TrimSuffix(validate, ".tar.xz") | ||
| validate = strings.TrimSuffix(validate, ".tar.xz.minisig") | ||
| validate = strings.TrimSuffix(validate, ".zip") | ||
| validate = strings.TrimSuffix(validate, ".zip.minisig") | ||
| zigVersionRegexp := regexp.MustCompile(`(\d\.?)+-[[:alnum:]]+.\d+\+[[:alnum:]]+`) | ||
| if !zigVersionRegexp.MatchString(validate) { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "invalid filename\n") | ||
| return nil | ||
| } | ||
|
|
||
| path := path.Join("cache/zig/", fname) | ||
| serveCacheHit := func() error { | ||
| w.Header().Set("cache-control", "public, max-age=31536000, immutable") | ||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
| fi, err := f.Stat() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| b.idLogf("zig", "serve %s", path) | ||
| http.ServeContent(w, r, fname, fi.ModTime(), f) | ||
| return nil | ||
| } | ||
| if _, err := os.Stat(path); err == nil { | ||
| return serveCacheHit() | ||
| } | ||
|
|
||
| url := "https://ziglang.org/builds/" + fname | ||
| logWriter := b.idWriter("zig") | ||
| _ = os.MkdirAll("cache/zig/", os.ModePerm) | ||
| if err := scripts.DownloadFile(url, path)(logWriter); err != nil { | ||
| b.idLogf("zig", "error downloading file: %s url=%s", err, url) | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "unable to fetch\n") | ||
| return nil | ||
| } | ||
| return serveCacheHit() | ||
| } | ||
|
|
||
| // https://pkg.machengine.org/<project>/<file> | ||
| // -> https://github.com/hexops/<project>/archive/<file> | ||
| func (b *Bot) httpPkgPkg(w http.ResponseWriter, r *http.Request) error { | ||
| split := strings.Split(r.URL.Path, "/") | ||
| if len(split) != 3 { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "invalid path\n") | ||
| return nil | ||
| } | ||
| project, fname := split[1], split[2] | ||
| if project != path.Clean(project) { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "illegal project name\n") | ||
| return nil | ||
| } | ||
| if !strings.HasSuffix(fname, ".tar.gz") { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "illegal file extension\n") | ||
| return nil | ||
| } | ||
|
|
||
| cachePath := path.Join("cache/pkg/", project, fname) | ||
| serveCacheHit := func() error { | ||
| w.Header().Set("cache-control", "public, max-age=31536000, immutable") | ||
| f, err := os.Open(cachePath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
| fi, err := f.Stat() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| b.idLogf("pkg", "serve %s", cachePath) | ||
| http.ServeContent(w, r, fname, fi.ModTime(), f) | ||
| return nil | ||
| } | ||
| if _, err := os.Stat(cachePath); err == nil { | ||
| return serveCacheHit() | ||
| } | ||
|
|
||
| u := &url.URL{ | ||
| Scheme: "https", | ||
| Host: "github.com", | ||
| Path: path.Join("hexops", project, "archive", fname), | ||
| } | ||
| url := u.String() | ||
| logWriter := b.idWriter("pkg") | ||
| _ = os.MkdirAll(path.Join("cache/pkg/", project), os.ModePerm) | ||
| if err := scripts.DownloadFile(url, cachePath)(logWriter); err != nil { | ||
| b.idLogf("pkg", "error downloading file: %s url=%s", err, url) | ||
| w.WriteHeader(http.StatusNotFound) | ||
| fmt.Fprintf(w, "unable to fetch\n") | ||
| return nil | ||
| } | ||
| return serveCacheHit() | ||
| } |
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