2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
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18 * may be used to endorse or promote products derived from this software
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35 RCSID("$OpenBSD: readpass.c,v 1.16 2001/05/02 01:25:39 mouring Exp $");
40 #include "pathnames.h"
46 ssh_askpass(char *askpass, const char *msg)
54 if (fflush(stdout) != 0)
55 error("ssh_askpass: fflush: %s", strerror(errno));
57 fatal("internal error: askpass undefined");
59 fatal("ssh_askpass: pipe: %s", strerror(errno));
60 if ((pid = fork()) < 0)
61 fatal("ssh_askpass: fork: %s", strerror(errno));
66 if (dup2(p[1], STDOUT_FILENO) < 0)
67 fatal("ssh_askpass: dup2: %s", strerror(errno));
68 execlp(askpass, askpass, msg, (char *) 0);
69 fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno));
72 len = read(p[0], buf, sizeof buf);
74 while (waitpid(pid, &status, 0) < 0)
79 nl = strchr(buf, '\n');
83 memset(buf, 0, sizeof(buf));
89 * Reads a passphrase from /dev/tty with echo turned off. Returns the
90 * passphrase (allocated with xmalloc), being very careful to ensure that
91 * no other userland buffer is storing the password.
94 * Note: the funcationallity of this routing has been moved to
95 * cli_read_passphrase(). This routing remains to maintain
96 * compatibility with existing code.
99 read_passphrase(const char *prompt, int from_stdin)
101 char *askpass = NULL;
102 int use_askpass = 0, ttyfd;
105 if (!isatty(STDIN_FILENO))
108 ttyfd = open("/dev/tty", O_RDWR);
115 if (use_askpass && getenv("DISPLAY")) {
116 if (getenv(SSH_ASKPASS_ENV))
117 askpass = getenv(SSH_ASKPASS_ENV);
119 askpass = _PATH_SSH_ASKPASS_DEFAULT;
120 return ssh_askpass(askpass, prompt);
123 return cli_read_passphrase(prompt, from_stdin, 0);