[PATCH v3 7/9] http-push: check path length before using it

[Tay Ray Chuan <rctay89@gmail.com>]

We use path_len to skip the base url/path, but we do not know for sure
if path does indeed contain the base url/path. Check if this is so.

Helped-by: Johnathan Nieder <jrnieder@gmail.com>
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 http-push.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/http-push.c b/http-push.c
index 565e580..bfa1fe7 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1116,8 +1116,16 @@ static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
 				}
 			}
 			if (path) {
-				path += repo->path_len;
-				ls->dentry_name = xstrdup(path);
+				const char *url = repo->url;
+				if (repo->path)
+					url = repo->path;
+				if (strncmp(path, url, repo->path_len))
+					error("Parsed path '%s' does not match url: '%s'\n",
+					      path, url);
+				else {
+					path += repo->path_len;
+					ls->dentry_name = xstrdup(path);
+				}
 			}
 		} else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
 			ls->dentry_flags |= IS_DIR;
-- 
1.7.3.2.495.gc7b3f