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-rw-r--r--guix/import/github.scm20
1 files changed, 18 insertions, 2 deletions
diff --git a/guix/import/github.scm b/guix/import/github.scm
index 01452b12e3..1e0bb53d9a 100644
--- a/guix/import/github.scm
+++ b/guix/import/github.scm
@@ -19,16 +19,32 @@
(define-module (guix import github)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-34)
#:use-module (json)
#:use-module (guix utils)
#:use-module ((guix download) #:prefix download:)
#:use-module (guix import utils)
- #:use-module (guix import json)
#:use-module (guix packages)
#:use-module (guix upstream)
+ #:use-module (guix http-client)
#:use-module (web uri)
#:export (%github-updater))
+(define (json-fetch* url)
+ "Return a representation of the JSON resource URL (a list or hash table), or
+#f if URL returns 403 or 404."
+ (guard (c ((and (http-get-error? c)
+ (let ((error (http-get-error-code c)))
+ (or (= 403 error)
+ (= 404 error))))
+ #f)) ;; "expected" if there is an authentification error (403),
+ ;; or if package is unknown (404).
+ ;; Note: github.com returns 403 if we omit a 'User-Agent' header.
+ (let* ((port (http-fetch url))
+ (result (json->scm port)))
+ (close-port port)
+ result)))
+
(define (find-extension url)
"Return the extension of the archive e.g. '.tar.gz' given a URL, or
false if none is recognized"
@@ -125,7 +141,7 @@ the package e.g. 'bedtools2'. Return #f if there is no releases"
"https://api.github.com/repos/"
(github-user-slash-repository url)
"/releases"))
- (json (json-fetch
+ (json (json-fetch*
(if token
(string-append api-url "?access_token=" token)
api-url))))