1 files changed, 79 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/bb_askpass.c b/release/src/router/busybox/libbb/bb_askpass.c
new file mode 100644
index 00000000..c0dcf0c5
--- /dev/null
+++ b/release/src/router/busybox/libbb/bb_askpass.c
@@ -0,0 +1,79 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Ask for a password
+ * I use a static buffer in this function.  Plan accordingly.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* do nothing signal handler */
+static void askpass_timeout(int UNUSED_PARAM ignore)
+{
+}
+
+char* FAST_FUNC bb_ask_stdin(const char *prompt)
+{
+	return bb_ask(STDIN_FILENO, 0, prompt);
+}
+char* FAST_FUNC bb_ask(const int fd, int timeout, const char *prompt)
+{
+	/* Was static char[BIGNUM] */
+	enum { sizeof_passwd = 128 };
+	static char *passwd;
+
+	char *ret;
+	int i;
+	struct sigaction sa, oldsa;
+	struct termios tio, oldtio;
+
+	if (!passwd)
+		passwd = xmalloc(sizeof_passwd);
+	memset(passwd, 0, sizeof_passwd);
+
+	tcgetattr(fd, &oldtio);
+	tcflush(fd, TCIFLUSH);
+	tio = oldtio;
+	tio.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
+	tio.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
+	tcsetattr_stdin_TCSANOW(&tio);
+
+	memset(&sa, 0, sizeof(sa));
+	/* sa.sa_flags = 0; - no SA_RESTART! */
+	/* SIGINT and SIGALRM will interrupt read below */
+	sa.sa_handler = askpass_timeout;
+	sigaction(SIGINT, &sa, &oldsa);
+	if (timeout) {
+		sigaction_set(SIGALRM, &sa);
+		alarm(timeout);
+	}
+
+	fputs(prompt, stdout);
+	fflush(stdout);
+	ret = NULL;
+	/* On timeout or Ctrl-C, read will hopefully be interrupted,
+	 * and we return NULL */
+	if (read(fd, passwd, sizeof_passwd - 1) > 0) {
+		ret = passwd;
+		i = 0;
+		/* Last byte is guaranteed to be 0
+		   (read did not overwrite it) */
+		do {
+			if (passwd[i] == '\r' || passwd[i] == '\n')
+				passwd[i] = '\0';
+		} while (passwd[i++]);
+	}
+
+	if (timeout) {
+		alarm(0);
+	}
+	sigaction_set(SIGINT, &oldsa);
+
+	tcsetattr_stdin_TCSANOW(&oldtio);
+	bb_putchar('\n');
+	fflush(stdout);
+	return ret;
+}