From 574a315c4444920e5fe64d429d1d3acf0dd74a84 Mon Sep 17 00:00:00 2001
From: Stephen Kitt <steve@sk2.org>
Date: Sun, 13 Sep 2015 15:15:21 +0200
Subject: [PATCH] Check that stdin is a tty before reading

If stdin isn't a tty, the behaviour of std::getline(std::cin, email) and getpass() is different (the latter always uses /dev/tty). If input is redirected, it's probably best to just fail.
---
 src/downloader.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/downloader.cpp b/src/downloader.cpp
index 8de7a9a..bf53509 100644
--- a/src/downloader.cpp
+++ b/src/downloader.cpp
@@ -121,6 +121,10 @@ int Downloader::login()
 {
     char *pwd;
     std::string email;
+    if (!isatty(STDIN_FILENO)) {
+        std::cout << "Unable to read email and password" << std::endl;
+        return 0;
+    }
     std::cout << "Email: ";
     std::getline(std::cin,email);
     pwd = getpass("Password: ");