[PATCH v2 2/2] ui-repolist: return HTTP 404 if no repositories found

[peter at colberg.org (Peter Colberg)]

Return HTTP status code 404 Not found when querying a non-existent
repository, which signals to search engines that a repository no
longer exists. Further, some webservers such as nginx permit
logging requests to different files depending on the HTTP code.

Signed-off-by: Peter Colberg <peter at colberg.org>
---
 ui-repolist.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/ui-repolist.c b/ui-repolist.c
index f3f5353..95abb8d 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -115,6 +115,20 @@ static int is_visible(struct cgit_repo *repo)
 	return 1;
 }
 
+static int any_repos_visible()
+{
+	struct cgit_repo *repo;
+	int i;
+
+	for (i = 0; i < cgit_repolist.count; i++) {
+		repo = &cgit_repolist.repos[i];
+		if (is_visible(repo)) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
 static void print_sort_header(const char *title, const char *sort)
 {
 	char *currenturl = cgit_currenturl();
@@ -266,6 +280,11 @@ void cgit_print_repolist(void)
 	char *section;
 	int sorted = 0;
 
+	if (!any_repos_visible()) {
+		cgit_print_error_page(404, "Not found", "No repositories found");
+		return;
+	}
+
 	if (ctx.cfg.enable_index_links)
 		++columns;
 	if (ctx.cfg.enable_index_owner)
@@ -347,9 +366,7 @@ void cgit_print_repolist(void)
 		html("</tr>\n");
 	}
 	html("</table>");
-	if (!hits)
-		cgit_print_error("No repositories found");
-	else if (hits > ctx.cfg.max_repo_count)
+	if (hits > ctx.cfg.max_repo_count)
 		print_pager(hits, ctx.cfg.max_repo_count, ctx.qry.search, ctx.qry.sort);
 	cgit_print_docend();
 }
-- 
2.6.2