From 5931a158a4df45904b28bcd8e85cbddca61e4b7d Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Wed, 10 Nov 2010 20:52:30 +0000
Subject: [PATCH] uhttpd: redirect to same location with trailing slash
 appended if directories are requested

SVN-Revision: 23952
---
 package/uhttpd/Makefile           |  2 +-
 package/uhttpd/src/uhttpd-utils.c | 21 +++++++++++++++++++--
 package/uhttpd/src/uhttpd-utils.h |  1 +
 package/uhttpd/src/uhttpd.c       |  3 +--
 4 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/package/uhttpd/Makefile b/package/uhttpd/Makefile
index 29d3ee5b1f..b639c007b2 100644
--- a/package/uhttpd/Makefile
+++ b/package/uhttpd/Makefile
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=uhttpd
-PKG_RELEASE:=18
+PKG_RELEASE:=19
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 PKG_BUILD_DEPENDS := libcyassl liblua
diff --git a/package/uhttpd/src/uhttpd-utils.c b/package/uhttpd/src/uhttpd-utils.c
index 9f9a5dd6a7..c7bc867aab 100644
--- a/package/uhttpd/src/uhttpd-utils.c
+++ b/package/uhttpd/src/uhttpd-utils.c
@@ -474,6 +474,7 @@ struct path_info * uh_path_lookup(struct client *cl, const char *url)
 	char *docroot = cl->server->conf->docroot;
 	char *pathptr = NULL;
 
+	int slash = 0;
 	int no_sym = cl->server->conf->no_symlinks;
 	int i = 0;
 	struct stat s;
@@ -516,7 +517,7 @@ struct path_info * uh_path_lookup(struct client *cl, const char *url)
 	}
 
 	/* create canon path */
-	for( i = strlen(buffer); i >= 0; i-- )
+	for( i = strlen(buffer), slash = (buffer[max(0, i-1)] == '/'); i >= 0; i-- )
 	{
 		if( (buffer[i] == 0) || (buffer[i] == '/') )
 		{
@@ -567,7 +568,23 @@ struct path_info * uh_path_lookup(struct client *cl, const char *url)
 			memcpy(buffer, path_phys, sizeof(buffer));
 			pathptr = &buffer[strlen(buffer)];
 
-			if( cl->server->conf->index_file )
+			/* if requested url resolves to a directory and a trailing slash
+			   is missing in the request url, redirect the client to the same
+			   url with trailing slash appended */
+			if( !slash )
+			{
+				uh_http_sendf(cl, NULL,
+					"HTTP/1.1 302 Found\r\n"
+					"Location: %s%s%s\r\n"
+					"Connection: close\r\n\r\n",
+						&path_phys[strlen(docroot)],
+						p.query ? "?" : "",
+						p.query ? p.query : ""
+				);
+
+				p.redirected = 1;
+			}
+			else if( cl->server->conf->index_file )
 			{
 				strncat(buffer, cl->server->conf->index_file, sizeof(buffer));
 
diff --git a/package/uhttpd/src/uhttpd-utils.h b/package/uhttpd/src/uhttpd-utils.h
index 6a0a395a91..769e5b45d6 100644
--- a/package/uhttpd/src/uhttpd-utils.h
+++ b/package/uhttpd/src/uhttpd-utils.h
@@ -52,6 +52,7 @@ struct path_info {
 	char *name;
 	char *info;
 	char *query;
+	int redirected;
 	struct stat stat;
 };
 
diff --git a/package/uhttpd/src/uhttpd.c b/package/uhttpd/src/uhttpd.c
index a818e1c450..491452b634 100644
--- a/package/uhttpd/src/uhttpd.c
+++ b/package/uhttpd/src/uhttpd.c
@@ -566,7 +566,7 @@ static void uh_mainloop(struct config *conf, fd_set serv_fds, int max_fd)
 						if( (pin = uh_path_lookup(cl, req->url)) != NULL )
 						{
 							/* auth ok? */
-							if( uh_auth_check(cl, req, pin) )
+							if( !pin->redirected && uh_auth_check(cl, req, pin) )
 								uh_dispatch_request(cl, req, pin);
 						}
 
@@ -1089,4 +1089,3 @@ int main (int argc, char **argv)
 
 	return 0;
 }
-
-- 
2.30.2