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authorDamien Miller <djm@mindrot.org>2000-10-14 16:23:11 +1100
committerDamien Miller <djm@mindrot.org>2000-10-14 16:23:11 +1100
commit874d77bb134a21a5cf625956b60173376a993ba8 (patch)
tree93dd73b2ff1fbf0ad5f3978a2c4e0d8438a0bf7c /readpass.c
parent89d9796fbedef4eed6956a2c095c7cc25330c28d (diff)
- (djm) Big OpenBSD sync:
- markus@cvs.openbsd.org 2000/09/30 10:27:44 [log.c] allow loglevel debug - markus@cvs.openbsd.org 2000/10/03 11:59:57 [packet.c] hmac->mac - markus@cvs.openbsd.org 2000/10/03 12:03:03 [auth-krb4.c auth-passwd.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth1.c] move fake-auth from auth1.c to individual auth methods, disables s/key in debug-msg - markus@cvs.openbsd.org 2000/10/03 12:16:48 ssh.c do not resolve canonname, i have no idea why this was added oin ossh - markus@cvs.openbsd.org 2000/10/09 15:30:44 ssh-keygen.1 ssh-keygen.c -X now reads private ssh.com DSA keys, too. - markus@cvs.openbsd.org 2000/10/09 15:32:34 auth-options.c clear options on every call. - markus@cvs.openbsd.org 2000/10/09 15:51:00 authfd.c authfd.h interop with ssh-agent2, from <res@shore.net> - markus@cvs.openbsd.org 2000/10/10 14:20:45 compat.c use rexexp for version string matching - provos@cvs.openbsd.org 2000/10/10 22:02:18 [kex.c kex.h myproposal.h ssh.h ssh2.h sshconnect2.c sshd.c dh.c dh.h] First rough implementation of the diffie-hellman group exchange. The client can ask the server for bigger groups to perform the diffie-hellman in, thus increasing the attack complexity when using ciphers with longer keys. University of Windsor provided network, T the company. - markus@cvs.openbsd.org 2000/10/11 13:59:52 [auth-rsa.c auth2.c] clear auth options unless auth sucessfull - markus@cvs.openbsd.org 2000/10/11 14:00:27 [auth-options.h] clear auth options unless auth sucessfull - markus@cvs.openbsd.org 2000/10/11 14:03:27 [scp.1 scp.c] support 'scp -o' with help from mouring@pconline.com - markus@cvs.openbsd.org 2000/10/11 14:11:35 [dh.c] Wall - markus@cvs.openbsd.org 2000/10/11 14:14:40 [auth.h auth2.c readconf.c readconf.h readpass.c servconf.c servconf.h] [ssh.h sshconnect2.c sshd_config auth2-skey.c cli.c cli.h] add support for s/key (kbd-interactive) to ssh2, based on work by mkiernan@avantgo.com and me - markus@cvs.openbsd.org 2000/10/11 14:27:24 [auth.c auth1.c auth2.c authfile.c cipher.c cipher.h kex.c kex.h] [myproposal.h packet.c readconf.c session.c ssh.c ssh.h sshconnect1.c] [sshconnect2.c sshd.c] new cipher framework - markus@cvs.openbsd.org 2000/10/11 14:45:21 [cipher.c] remove DES - markus@cvs.openbsd.org 2000/10/12 03:59:20 [cipher.c cipher.h sshconnect1.c sshconnect2.c sshd.c] enable DES in SSH-1 clients only - markus@cvs.openbsd.org 2000/10/12 08:21:13 [kex.h packet.c] remove unused - markus@cvs.openbsd.org 2000/10/13 12:34:46 [sshd.c] Kludge for F-Secure Macintosh < 1.0.2; appro@fy.chalmers.se - markus@cvs.openbsd.org 2000/10/13 12:59:15 [cipher.c cipher.h myproposal.h rijndael.c rijndael.h] rijndael/aes support - markus@cvs.openbsd.org 2000/10/13 13:10:54 [sshd.8] more info about -V - markus@cvs.openbsd.org 2000/10/13 13:12:02 [myproposal.h] prefer no compression
Diffstat (limited to 'readpass.c')
-rw-r--r--readpass.c82
1 files changed, 9 insertions, 73 deletions
diff --git a/readpass.c b/readpass.c
index c38292f15..f3a7dcbed 100644
--- a/readpass.c
+++ b/readpass.c
@@ -32,88 +32,24 @@
32 */ 32 */
33 33
34#include "includes.h" 34#include "includes.h"
35RCSID("$OpenBSD: readpass.c,v 1.11 2000/06/20 01:39:44 markus Exp $"); 35RCSID("$OpenBSD: readpass.c,v 1.12 2000/10/11 20:14:39 markus Exp $");
36 36
37#include "xmalloc.h" 37#include "xmalloc.h"
38#include "ssh.h" 38#include "ssh.h"
39 39#include "cli.h"
40volatile int intr;
41
42void
43intcatch()
44{
45 intr = 1;
46}
47 40
48/* 41/*
49 * Reads a passphrase from /dev/tty with echo turned off. Returns the 42 * Reads a passphrase from /dev/tty with echo turned off. Returns the
50 * passphrase (allocated with xmalloc), being very careful to ensure that 43 * passphrase (allocated with xmalloc), being very careful to ensure that
51 * no other userland buffer is storing the password. 44 * no other userland buffer is storing the password.
52 */ 45 */
46/*
47 * Note: the funcationallity of this routing has been moved to
48 * cli_read_passphrase(). This routing remains to maintain
49 * compatibility with existing code.
50 */
53char * 51char *
54read_passphrase(const char *prompt, int from_stdin) 52read_passphrase(char *prompt, int from_stdin)
55{ 53{
56 char buf[1024], *p, ch; 54 return cli_read_passphrase(prompt, from_stdin, 0);
57 struct termios tio, saved_tio;
58 sigset_t oset, nset;
59 struct sigaction sa, osa;
60 int input, output, echo = 0;
61
62 if (from_stdin) {
63 input = STDIN_FILENO;
64 output = STDERR_FILENO;
65 } else
66 input = output = open("/dev/tty", O_RDWR);
67
68 if (input == -1)
69 fatal("You have no controlling tty. Cannot read passphrase.\n");
70
71 /* block signals, get terminal modes and turn off echo */
72 sigemptyset(&nset);
73 sigaddset(&nset, SIGTSTP);
74 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
75 memset(&sa, 0, sizeof(sa));
76 sa.sa_handler = intcatch;
77 (void) sigaction(SIGINT, &sa, &osa);
78
79 intr = 0;
80
81 if (tcgetattr(input, &saved_tio) == 0 && (saved_tio.c_lflag & ECHO)) {
82 echo = 1;
83 tio = saved_tio;
84 tio.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
85 (void) tcsetattr(input, TCSANOW, &tio);
86 }
87
88 fflush(stdout);
89
90 (void)write(output, prompt, strlen(prompt));
91 for (p = buf; read(input, &ch, 1) == 1 && ch != '\n';) {
92 if (intr)
93 break;
94 if (p < buf + sizeof(buf) - 1)
95 *p++ = ch;
96 }
97 *p = '\0';
98 if (!intr)
99 (void)write(output, "\n", 1);
100
101 /* restore terminal modes and allow signals */
102 if (echo)
103 tcsetattr(input, TCSANOW, &saved_tio);
104 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
105 (void) sigaction(SIGINT, &osa, NULL);
106
107 if (intr) {
108 kill(getpid(), SIGINT);
109 sigemptyset(&nset);
110 /* XXX tty has not neccessarily drained by now? */
111 sigsuspend(&nset);
112 }
113
114 if (!from_stdin)
115 (void)close(input);
116 p = xstrdup(buf);
117 memset(buf, 0, sizeof(buf));
118 return (p);
119} 55}