Initial revision

lang/cem/libcc.ansi/misc/getpass.c

@@ -0,0 +1,44 @@
+/*
+ * getpass - ask for a password
+ */
+/* $Header$ */
+
+#include	<signal.h>
+#include	<string.h>
+#include	<sgtty.h>
+
+#define	O_RDONLY	0
+int open(const char *path, int flags);
+int write(int d, const char *buf, int nbytes);
+int read(int d, char *buf, int nbytes);
+int close(int d);
+
+int stty(int, struct sgttyb *);
+int gtty(int, struct sgttyb *);
+
+char *
+getpass(const char *prompt)
+{
+	int i = 0;
+	struct sgttyb tty, ttysave;
+	static char pwdbuf[9];
+	int fd;
+	void (*savesig)(int);
+
+	if ((fd = open("/dev/tty", O_RDONLY)) < 0) fd = 0;
+	savesig = signal(SIGINT, SIG_IGN);
+	write(2, prompt, strlen(prompt));
+	gtty(fd, &tty);
+	ttysave = tty;
+	tty.sg_flags &= ~ECHO;
+	stty(fd, &tty);
+	i = read(fd, pwdbuf, 9);
+	while (pwdbuf[i - 1] != '\n')
+		read(fd, &pwdbuf[i - 1], 1);
+	pwdbuf[i - 1] = '\0';
+	stty(fd, &ttysave);
+	write(2, "\n", 1);
+	if (fd != 0) close(fd);
+	signal(SIGINT, savesig);
+	return(pwdbuf);
+}