add support for handling redirects via a script

In a json_script file you can specify rules for rewriting the URL or
redirecting the browser either unconditionally, or as a fallback where
it would otherwise print a 404 error

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/file.c b/file.c
index 009acbd..816df85 100644
--- a/file.c
+++ b/file.c
@@ -127,7 +127,7 @@ next:
 /* Returns NULL on error.
 ** NB: improperly encoded URL should give client 400 [Bad Syntax]; returning
 ** NULL here causes 404 [Not Found], but that's not too unreasonable. */
-static struct path_info *
+struct path_info *
 uh_path_lookup(struct client *cl, const char *url)
 {
 	static char path_phys[PATH_MAX];
@@ -864,6 +864,10 @@ void uh_handle_request(struct client *cl)
 
 	url = uh_handle_alias(url);
 
+	uh_handler_run(cl, &url, false);
+	if (!url)
+		return;
+
 	req->redirect_status = 200;
 	d = dispatch_find(url, NULL);
 	if (d)
@@ -872,6 +876,10 @@ void uh_handle_request(struct client *cl)
 	if (__handle_file_request(cl, url))
 		return;
 
+	if (uh_handler_run(cl, &url, true) &&
+	    (!url || __handle_file_request(cl, url)))
+		return;
+
 	req->redirect_status = 404;
 	if (conf.error_handler) {
 		error_handler = alloca(strlen(conf.error_handler) + 1);