http: factor out http error code handling

Most of our http requests go through the http_request()
interface, which does some nice post-processing on the
results. In particular, it handles prompting for missing
credentials as well as approving and rejecting valid or
invalid credentials. Unfortunately, it only handles GET
requests. Making it handle POSTs would be quite complex, so
let's pull result handling code into its own function so
that it can be reused from the POST code paths.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 28 insertions, 23 deletions

diff --git a/http.c b/http.c
index 2ec37891f..7c4a4072f 100644
--- a/http.c
+++ b/http.c
@@ -744,6 +744,33 @@ char *get_remote_object_url(const char *url, const char *hex,
 	return strbuf_detach(&buf, NULL);
 }
 
+int handle_curl_result(struct active_request_slot *slot)
+{
+	struct slot_results *results = slot->results;
+
+	if (results->curl_result == CURLE_OK) {
+		credential_approve(&http_auth);
+		return HTTP_OK;
+	} else if (missing_target(results))
+		return HTTP_MISSING_TARGET;
+	else if (results->http_code == 401) {
+		if (http_auth.username && http_auth.password) {
+			credential_reject(&http_auth);
+			return HTTP_NOAUTH;
+		} else {
+			credential_fill(&http_auth);
+			init_curl_http_auth(slot->curl);
+			return HTTP_REAUTH;
+		}
+	} else {
+		if (!curl_errorstr[0])
+			strlcpy(curl_errorstr,
+				curl_easy_strerror(results->curl_result),
+				sizeof(curl_errorstr));
+		return HTTP_ERROR;
+	}
+}
+
 /* http_request() targets */
 #define HTTP_REQUEST_STRBUF	0
 #define HTTP_REQUEST_FILE	1
@@ -791,26 +818,7 @@ static int http_request(const char *url, void *result, int target, int options)
 
 	if (start_active_slot(slot)) {
 		run_active_slot(slot);
-		if (results.curl_result == CURLE_OK)
-			ret = HTTP_OK;
-		else if (missing_target(&results))
-			ret = HTTP_MISSING_TARGET;
-		else if (results.http_code == 401) {
-			if (http_auth.username && http_auth.password) {
-				credential_reject(&http_auth);
-				ret = HTTP_NOAUTH;
-			} else {
-				credential_fill(&http_auth);
-				init_curl_http_auth(slot->curl);
-				ret = HTTP_REAUTH;
-			}
-		} else {
-			if (!curl_errorstr[0])
-				strlcpy(curl_errorstr,
-					curl_easy_strerror(results.curl_result),
-					sizeof(curl_errorstr));
-			ret = HTTP_ERROR;
-		}
+		ret = handle_curl_result(slot);
 	} else {
 		error("Unable to start HTTP request for %s", url);
 		ret = HTTP_START_FAILED;
@@ -819,9 +827,6 @@ static int http_request(const char *url, void *result, int target, int options)
 	curl_slist_free_all(headers);
 	strbuf_release(&buf);
 
-	if (ret == HTTP_OK)
-		credential_approve(&http_auth);
-
 	return ret;
 }