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authorAlain Magloire <alainm@gnu.org>2001-12-04 13:57:59 +0000
committerAlain Magloire <alainm@gnu.org>2001-12-04 13:57:59 +0000
commit1dd25572979f4ce89505c82ac91148470d13bc09 (patch)
tree322128b4bb5a09fd31a7391db0ea84a71eed46d1 /lib/getpass.c
parent94711aa6b56a1f7856ee3365034d38db4b682ae2 (diff)
downloadmailutils-1dd25572979f4ce89505c82ac91148470d13bc09.tar.gz
mailutils-1dd25572979f4ce89505c82ac91148470d13bc09.tar.bz2
Suprisingly some OSes do not have getpass()
drop a dumb version in lib/getpass.c for missing plaforms. * configure.in: Check for getpass (); * lib/getpass.c: New file. * lib/Makefile.am: Updated.
Diffstat (limited to 'lib/getpass.c')
-rw-r--r--lib/getpass.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/lib/getpass.c b/lib/getpass.c
new file mode 100644
index 000000000..54963772f
--- /dev/null
+++ b/lib/getpass.c
@@ -0,0 +1,99 @@
+/* GNU mailutils - a suite of utilities for electronic mail
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Library Public License as published by
+ the Free Software Foundation; either version 2, 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 Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <termios.h>
+
+/* Alain: Parts originally from GNU Lib C. */
+
+static void
+echo_off(int fd, struct termios *stored_settings)
+{
+ struct termios new_settings;
+ tcgetattr (fd, stored_settings);
+ new_settings = *stored_settings;
+ new_settings.c_lflag &= (~ECHO);
+ tcsetattr (fd, TCSANOW, &new_settings);
+}
+
+static void
+echo_on(int fd, struct termios *stored_settings)
+{
+ tcsetattr (fd, TCSANOW, stored_settings);
+}
+
+char *
+getpass (const char * prompt)
+{
+ FILE *in, *out;
+ struct termios stored_settings;
+ static char *buf;
+ static size_t buf_size;
+ char *pbuf;
+
+ /* First pass initialize the buffer. */
+ if (buf_size == 0)
+ {
+ buf_size = 256;
+ buf = calloc (1, buf_size);
+ if (buf == NULL)
+ return NULL;
+ }
+ else
+ memset (buf, '\0', buf_size);
+
+ /* Turn echoing off if it is on now. */
+ echo_off (fileno (stdin), &stored_settings);
+
+ /* Write the prompt. */
+ fputs (prompt, stdout);
+ fflush (stdout);
+
+ /* Read the password. */
+ pbuf = fgets (buf, buf_size, stdin);
+ if (pbuf)
+ {
+ size_t nread = strlen (pbuf);
+ if (nread && pbuf[nread - 1] == '\n')
+ {
+ /* Remove the newline. */
+ pbuf[nread - 1] = '\0';
+ /* Write the newline that was not echoed. */
+ putc ('\n', stdout);
+ }
+ }
+
+ /* Restore the original setting. */
+ echo_on (fileno (stdin), &stored_settings);
+
+ return pbuf;
+}
+
+#ifdef _GETPASS_STANDALONE_TEST
+
+int
+main ()
+{
+ char *p;
+ p = getpass ("my prompt: ");
+ if (p)
+ printf ("Passwd: %s\n", p);
+ return 0;
+}
+#endif

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