1 files changed, 124 insertions, 0 deletions

diff --git a/other/ssharp/readpass.c b/other/ssharp/readpass.c
new file mode 100644
index 0000000..b93eaba
--- /dev/null
+++ b/other/ssharp/readpass.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 1988, 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.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: readpass.c,v 1.15 2001/04/18 21:57:41 markus Exp $");
+
+#include "xmalloc.h"
+#include "cli.h"
+#include "readpass.h"
+#include "pathnames.h"
+#include "log.h"
+#include "atomicio.h"
+#include "ssh.h"
+
+char *
+ssh_askpass(char *askpass, char *msg)
+{
+        pid_t pid;
+        size_t len;
+        char *nl, *pass;
+        int p[2], status;
+        char buf[1024];
+
+        if (fflush(stdout) != 0)
+                error("ssh_askpass: fflush: %s", strerror(errno));
+        if (askpass == NULL)
+                fatal("internal error: askpass undefined");
+        if (pipe(p) < 0)
+                fatal("ssh_askpass: pipe: %s", strerror(errno));
+        if ((pid = fork()) < 0)
+                fatal("ssh_askpass: fork: %s", strerror(errno));
+        if (pid == 0) {
+                seteuid(getuid());
+                setuid(getuid());
+                close(p[0]);
+                if (dup2(p[1], STDOUT_FILENO) < 0)
+                        fatal("ssh_askpass: dup2: %s", strerror(errno));
+                execlp(askpass, askpass, msg, (char *) 0);
+                fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno));
+        }
+        close(p[1]);
+        len = read(p[0], buf, sizeof buf);
+        close(p[0]);
+        while (waitpid(pid, &status, 0) < 0)
+                if (errno != EINTR)
+                        break;
+        if (len <= 1)
+                return xstrdup("");
+        nl = strchr(buf, '\n');
+        if (nl)
+                *nl = '\0';
+        pass = xstrdup(buf);
+        memset(buf, 0, sizeof(buf));
+        return pass;
+}
+
+
+/*
+ * Reads a passphrase from /dev/tty with echo turned off.  Returns the
+ * passphrase (allocated with xmalloc), being very careful to ensure that
+ * no other userland buffer is storing the password.
+ */
+/*
+ * Note:  the funcationallity of this routing has been moved to
+ * cli_read_passphrase().  This routing remains to maintain
+ * compatibility with existing code.
+ */
+char *
+read_passphrase(const char *prompt, int from_stdin)
+{
+        char *askpass = NULL;
+        int use_askpass = 0, ttyfd;
+
+        if (from_stdin) {
+                if (!isatty(STDIN_FILENO))
+                        use_askpass = 1;
+        } else {
+                ttyfd = open("/dev/tty", O_RDWR);
+                if (ttyfd >= 0)
+                        close(ttyfd);
+                else
+                        use_askpass = 1;
+        }
+
+        if (use_askpass && getenv("DISPLAY")) {
+                if (getenv(SSH_ASKPASS_ENV))
+                        askpass = getenv(SSH_ASKPASS_ENV);
+                else
+                        askpass = _PATH_SSH_ASKPASS_DEFAULT;
+                return ssh_askpass(askpass, prompt);
+        }
+
+        return cli_read_passphrase(prompt, from_stdin, 0);
+}