cleanup src/linux and src/misc trees, etc.

previously, it was pretty much random which one of these trees a given
function appeared in. they have now been organized into:

src/linux: non-POSIX linux syscalls (possibly shard with other nixen)
src/legacy: various obsolete/legacy functions, mostly wrappers
src/misc: still mostly uncategorized; some misc POSIX, some nonstd
src/crypt: crypt hash functions

further cleanup will be done later.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/legacy/getpass.c b/src/legacy/getpass.c
new file mode 100644
index 00000000..d439a2a5
--- /dev/null
+++ b/src/legacy/getpass.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+char *getpass(const char *prompt)
+{
+	int fd;
+	struct termios s, t;
+	ssize_t l;
+	static char password[128];
+
+	if ((fd = open("/dev/tty", O_RDONLY|O_NOCTTY)) < 0) fd = 0;
+
+	tcgetattr(fd, &t);
+	s = t;
+	t.c_lflag &= ~(ECHO|ISIG);
+	t.c_lflag |= ICANON;
+	t.c_iflag &= ~(INLCR|IGNCR);
+	t.c_iflag |= ICRNL;
+	tcsetattr(fd, TCSAFLUSH, &t);
+	tcdrain(fd);
+
+	fputs(prompt, stderr);
+	fflush(stderr);
+
+	l = read(fd, password, sizeof password);
+	if (l >= 0) {
+		if (l > 0 && password[l-1] == '\n') l--;
+		password[l] = 0;
+	}
+
+	tcsetattr(fd, TCSAFLUSH, &s);
+
+	if (fd > 2) close(fd);
+
+	return password;
+}