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authorEric Andersen2004-05-01 01:27:30 +0000
committerEric Andersen2004-05-01 01:27:30 +0000
commit6f9a7783ce2f3ffae28176f8bcfcd6b86c1b41b3 (patch)
treec8d14b02f851c42acde95b53c77527e5461c885b /libbb/bb_askpass.c
parent90d2bff4c67d65a4025451213d5028c539b7b91a (diff)
downloadbusybox-6f9a7783ce2f3ffae28176f8bcfcd6b86c1b41b3.zip
busybox-6f9a7783ce2f3ffae28176f8bcfcd6b86c1b41b3.tar.gz
Do not use getpass(3)
Diffstat (limited to 'libbb/bb_askpass.c')
-rw-r--r--libbb/bb_askpass.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/libbb/bb_askpass.c b/libbb/bb_askpass.c
new file mode 100644
index 0000000..1ae1520
--- /dev/null
+++ b/libbb/bb_askpass.c
@@ -0,0 +1,87 @@
+/* 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>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#define PWD_BUFFER_SIZE 256
+
+
+/* do nothing signal handler */
+static void askpass_timeout(int ignore)
+{
+}
+
+char *bb_askpass(int timeout, const char * prompt)
+{
+ char *ret;
+ int i, size;
+ struct sigaction sa;
+ struct termios old, new;
+ static char passwd[PWD_BUFFER_SIZE];
+
+ tcgetattr(STDIN_FILENO, &old);
+
+ size = sizeof(passwd);
+ ret = passwd;
+ memset(passwd, 0, size);
+
+ fputs(prompt, stdout);
+ fflush(stdout);
+
+ tcgetattr(STDIN_FILENO, &new);
+ new.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
+ new.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
+ tcsetattr(STDIN_FILENO, TCSANOW, &new);
+
+ if (timeout) {
+ sa.sa_flags = 0;
+ sa.sa_handler = askpass_timeout;
+ sigaction(SIGALRM, &sa, NULL);
+ alarm(timeout);
+ }
+
+ if (read(STDIN_FILENO, passwd, size-1) <= 0) {
+ ret = NULL;
+ } else {
+ for(i = 0; i < size && passwd[i]; i++) {
+ if (passwd[i]== '\r' || passwd[i] == '\n') {
+ passwd[i]= 0;
+ break;
+ }
+ }
+ }
+
+ if (timeout) {
+ alarm(0);
+ }
+
+ tcsetattr(STDIN_FILENO, TCSANOW, &old);
+ fputs("\n", stdout);
+ fflush(stdout);
+ return ret;
+}
+