Libtelnet with encryption goes walkies to src/secure/lib

Reviewed by:	Geoff Rehmet

1 files changed, 145 insertions, 0 deletions

diff --git a/secure/lib/libtelnet/read_password.c b/secure/lib/libtelnet/read_password.c
new file mode 100644
index 0000000..5eaa895
--- /dev/null
+++ b/secure/lib/libtelnet/read_password.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)read_password.c	8.2 (Berkeley) 12/15/93";
+#endif /* not lint */
+
+/*
+ * $Source: /home/ncvs/src/lib/libtelnet/read_password.c,v $
+ * $Author: rgrimes $
+ *
+ * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
+ * of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
+ *
+ * This routine prints the supplied string to standard
+ * output as a prompt, and reads a password string without
+ * echoing.
+ */
+
+#if	defined(RSA_ENCPWD) || defined(KRB4_ENCPWD)
+
+#include <stdio.h>
+#include <strings.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+#include <setjmp.h>
+
+static jmp_buf env;
+
+/*** Routines ****************************************************** */
+/*
+ * This version just returns the string, doesn't map to key.
+ *
+ * Returns 0 on success, non-zero on failure.
+ */
+
+int
+local_des_read_pw_string(s,max,prompt,verify)
+    char *s;
+    int	max;
+    char *prompt;
+    int	verify;
+{
+    int ok = 0;
+    char *ptr;
+    
+    jmp_buf old_env;
+    struct sgttyb tty_state;
+    char key_string[BUFSIZ];
+
+    if (max > BUFSIZ) {
+	return -1;
+    }
+
+    /* XXX assume jmp_buf is typedef'ed to an array */
+    bcopy((char *)old_env, (char *)env, sizeof(env));
+    if (setjmp(env))
+	goto lose;
+
+    /* save terminal state*/
+    if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) 
+	return -1;
+/*
+    push_signals();
+*/
+    /* Turn off echo */
+    tty_state.sg_flags &= ~ECHO;
+    if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1)
+	return -1;
+    while (!ok) {
+	(void) printf(prompt);
+	(void) fflush(stdout);
+	while (!fgets(s, max, stdin));
+
+	if ((ptr = index(s, '\n')))
+	    *ptr = '\0';
+	if (verify) {
+	    printf("\nVerifying, please re-enter %s",prompt);
+	    (void) fflush(stdout);
+	    if (!fgets(key_string, sizeof(key_string), stdin)) {
+		clearerr(stdin);
+		continue;
+	    }
+            if ((ptr = index(key_string, '\n')))
+	    *ptr = '\0';
+	    if (strcmp(s,key_string)) {
+		printf("\n\07\07Mismatch - try again\n");
+		(void) fflush(stdout);
+		continue;
+	    }
+	}
+	ok = 1;
+    }
+
+lose:
+    if (!ok)
+	bzero(s, max);
+    printf("\n");
+    /* turn echo back on */
+    tty_state.sg_flags |= ECHO;
+    if (ioctl(0,TIOCSETP,(char *)&tty_state))
+	ok = 0;
+/*
+    pop_signals();
+*/
+    bcopy((char *)env, (char *)old_env, sizeof(env));
+    if (verify)
+	bzero(key_string, sizeof (key_string));
+    s[max-1] = 0;		/* force termination */
+    return !ok;			/* return nonzero if not okay */
+}
+#endif	/* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */