geomyidae

commit ce4493bfe5e03be7d7366962600933b1178ebbfd
parent 023fde401dd25419b07b1be7675f5b8c27f2fa80
Author: Christian Kellermann <ckeen@pestilenz.org>
Date:   Thu, 22 Mar 2018 13:08:39 +0100

Return an error message for selectors containing two dots

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Diffstat:
main.c
 | 
8
+++++++-

1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/main.c b/main.c
@@ -62,6 +62,9 @@ char *htredir = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 		"    This page is for redirecting you to: <a href=\"%s\">%s</a>.\n"
 		"  </body>\n"
 		"</html>\n";
+char *selinval ="3Happy helping ☃ here: "
+		"Sorry, your selector contains '..'. That's illegal here.\tErr"
+	    "\tlocalhost\t70\r\n.\r\n\r\n";
 
 int
 dropprivileges(struct group *gr, struct passwd *pw)
@@ -174,8 +177,11 @@ handlerequest(int sock, char *base, char *ohost, char *port, char *clienth,
 		recvb[0] = '/';
 		recvb[1] = '\0';
 	}
-	if (recvb[0] != '/' || strstr(recvb, ".."))
+
+	if (recvb[0] != '/' || strstr(recvb, "..")){
+		dprintf(sock, selinval);
 		return;
+	}
 
 	snprintf(path, sizeof(path), "%s%s", base, recvb);