cmd/go/internal/web2: diagnose unauthenticated 403 from GitHub
diff --git a/vendor/cmd/go/internal/web2/web.go b/vendor/cmd/go/internal/web2/web.go
index 0a7b8de..2608ae3 100644
--- a/vendor/cmd/go/internal/web2/web.go
+++ b/vendor/cmd/go/internal/web2/web.go
@@ -6,6 +6,7 @@
import (
"bytes"
+ "cmd/go/internal/base"
"encoding/json"
"flag"
"fmt"
@@ -59,6 +60,16 @@
return nrc
}
+func havePassword(machine string) bool {
+ netrcOnce.Do(readNetrc)
+ for _, line := range netrc {
+ if line.machine == machine {
+ return true
+ }
+ }
+ return false
+}
+
func readNetrc() {
data, err := ioutil.ReadFile(filepath.Join(os.Getenv("HOME"), ".netrc"))
if err != nil {
@@ -242,6 +253,9 @@
}
}()
+ if g.resp.StatusCode == 403 && req.URL.Host == "api.github.com" && !havePassword("api.github.com") {
+ base.Errorf("%s", githubMessage)
+ }
if !g.non200ok && g.resp.StatusCode != 200 {
return fmt.Errorf("unexpected status (%s): %v", url, g.resp.Status)
}
@@ -253,3 +267,19 @@
}
return err
}
+
+var githubMessage = `vgo: 403 response from api.github.com
+
+GitHub applies fairly small rate limits to unauthenticated users, and
+you appear to be hitting them. To authenticate, please visit
+https://github.com/settings/tokens and click "Generate New Token" to
+create a Personal Access Token. The token only needs "public_repo"
+scope, but you can add "repo" if you want to access private
+repositories too.
+
+Add the token to your $HOME/.netrc:
+
+ machine api.github.com login YOU password TOKEN
+
+Sorry for the interruption.
+`
