Vendor import of OpenPAM Calamite

1 files changed, 131 insertions, 0 deletions

diff --git a/contrib/openpam/lib/openpam_ttyconv.c b/contrib/openpam/lib/openpam_ttyconv.c
new file mode 100644
index 0000000..ac7eecd
--- /dev/null
+++ b/contrib/openpam/lib/openpam_ttyconv.c
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 2002 Networks Associates Technologies, Inc.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * NAI Labs, the Security Research Division of Network Associates, Inc.
+ * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
+ * DARPA CHATS research program.
+ *
+ * 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. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $Id$
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+
+#include <security/pam_appl.h>
+#include <security/openpam.h>
+
+/*
+ * Simple tty-based conversation function.
+ */
+
+int
+openpam_ttyconv(int n,
+	 const struct pam_message **msg,
+	 struct pam_response **resp,
+	 void *data)
+{
+	char buf[PAM_MAX_RESP_SIZE];
+	struct termios tattr;
+	tcflag_t lflag;
+	int fd, err, i;
+	size_t len;
+
+	data = data;
+	if (n <= 0 || n > PAM_MAX_NUM_MSG)
+		return (PAM_CONV_ERR);
+	if ((*resp = calloc(n, sizeof **resp)) == NULL)
+		return (PAM_BUF_ERR);
+	fd = fileno(stdin);
+	for (i = 0; i < n; ++i) {
+		resp[i]->resp_retcode = 0;
+		resp[i]->resp = NULL;
+		switch (msg[i]->msg_style) {
+		case PAM_PROMPT_ECHO_OFF:
+		case PAM_PROMPT_ECHO_ON:
+			if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF) {
+				if (tcgetattr(fd, &tattr) != 0) {
+					openpam_log(PAM_LOG_ERROR,
+					    "tcgetattr(): %m");
+					err = PAM_CONV_ERR;
+					goto fail;
+				}
+				lflag = tattr.c_lflag;
+				tattr.c_lflag &= ~ECHO;
+				if (tcsetattr(fd, TCSAFLUSH, &tattr) != 0) {
+					openpam_log(PAM_LOG_ERROR,
+					    "tcsetattr(): %m");
+					err = PAM_CONV_ERR;
+					goto fail;
+				}
+			}
+			fputs(msg[i]->msg, stderr);
+			buf[0] = '\0';
+			fgets(buf, sizeof buf, stdin);
+			if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF) {
+				tattr.c_lflag = lflag;
+				(void)tcsetattr(fd, TCSANOW, &tattr);
+				fputs("\n", stderr);
+			}
+			if (ferror(stdin)) {
+				err = PAM_CONV_ERR;
+				goto fail;
+			}
+			for (len = strlen(buf); len > 0; --len)
+				if (!isspace(buf[len - 1]))
+					break;
+			buf[len] = '\0';
+			if ((resp[i]->resp = strdup(buf)) == NULL) {
+				err = PAM_BUF_ERR;
+				goto fail;
+			}
+			break;
+		case PAM_ERROR_MSG:
+			fputs(msg[i]->msg, stderr);
+			break;
+		case PAM_TEXT_INFO:
+			fputs(msg[i]->msg, stdout);
+			break;
+		default:
+			err = PAM_BUF_ERR;
+			goto fail;
+		}
+	}
+	return (PAM_SUCCESS);
+ fail:
+	while (i)
+		free(resp[--i]);
+	free(*resp);
+	*resp = NULL;
+	return (err);
+}