Merge branch 'ew/http-alternates-as-redirects-warning'

Recent versions of Git treats http alternates (used in dumb http
transport) just like HTTP redirects and requires the client to
enable following it, due to security concerns.  But we forgot to
give a warning when we decide not to honor the alternates.

* ew/http-alternates-as-redirects-warning:
http: release strbuf on disabled alternates
http: inform about alternates-as-redirects behavior

diff --git a/http-walker.c b/http-walker.c
index b34b6ace7cd80a482eae16e2063aa9d8960e8729..ab7d5537ae55809685c633c91e869107f73fbb5b 100644 (file)
--- a/http-walker.c
+++ b/http-walker.c
@@ -168,6 +168,11 @@ static int is_alternate_allowed(const char *url)
        };
        int i;
 
+       if (http_follow_config != HTTP_FOLLOW_ALWAYS) {
+               warning("alternate disabled by http.followRedirects: %s", url);
+               return 0;
+       }
+
        for (i = 0; i < ARRAY_SIZE(protocols); i++) {
                const char *end;
                if (skip_prefix(url, protocols[i], &end) &&
@@ -314,6 +319,8 @@ static void process_alternates_response(void *callback_data)
                                        while (tail->next != NULL)
                                                tail = tail->next;
                                        tail->next = newalt;
+                               } else {
+                                       strbuf_release(&target);
                                }
                        }
                }
@@ -331,9 +338,6 @@ static void fetch_alternates(struct walker *walker, const char *base)
        struct alternates_request alt_req;
        struct walker_data *cdata = walker->data;
 
-       if (http_follow_config != HTTP_FOLLOW_ALWAYS)
-               return;
-
        /*
         * If another request has already started fetching alternates,
         * wait for them to arrive and return to processing this request's