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-rw-r--r--libmisc/rlogin.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/libmisc/rlogin.c b/libmisc/rlogin.c
new file mode 100644
index 0000000..fa67dc3
--- /dev/null
+++ b/libmisc/rlogin.c
@@ -0,0 +1,175 @@
+/*
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ifdef RLOGIN
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+#include <stdio.h>
+#include <pwd.h>
+#include <netdb.h>
+static struct {
+ int spd_name;
+ int spd_baud;
+} speed_table[] =
+{
+#ifdef B50
+ {
+ B50, 50},
+#endif
+#ifdef B75
+ {
+ B75, 75},
+#endif
+#ifdef B110
+ {
+ B110, 110},
+#endif
+#ifdef B134
+ {
+ B134, 134},
+#endif
+#ifdef B150
+ {
+ B150, 150},
+#endif
+#ifdef B200
+ {
+ B200, 200},
+#endif
+#ifdef B300
+ {
+ B300, 300},
+#endif
+#ifdef B600
+ {
+ B600, 600},
+#endif
+#ifdef B1200
+ {
+ B1200, 1200},
+#endif
+#ifdef B1800
+ {
+ B1800, 1800},
+#endif
+#ifdef B2400
+ {
+ B2400, 2400},
+#endif
+#ifdef B4800
+ {
+ B4800, 4800},
+#endif
+#ifdef B9600
+ {
+ B9600, 9600},
+#endif
+#ifdef B19200
+ {
+ B19200, 19200},
+#endif
+#ifdef B38400
+ {
+ B38400, 38400},
+#endif
+ {
+ -1, -1}
+};
+
+static void get_remote_string (char *buf, size_t size)
+{
+ for (;;) {
+ if (read (0, buf, 1) != 1) {
+ exit (EXIT_FAILURE);
+ }
+ if ('\0' == *buf) {
+ return;
+ }
+ --size;
+ if (size > 0) {
+ ++buf;
+ }
+ }
+ /*NOTREACHED*/}
+
+int
+do_rlogin (const char *remote_host, char *name, size_t namelen, char *term,
+ size_t termlen)
+{
+ struct passwd *pwd;
+ char remote_name[32];
+ char *cp;
+ unsigned long remote_speed = 9600;
+ int speed_name = B9600;
+ int i;
+ TERMIO termio;
+
+ get_remote_string (remote_name, sizeof remote_name);
+ get_remote_string (name, namelen);
+ get_remote_string (term, termlen);
+
+ cp = strchr (term, '/');
+ if (NULL != cp) {
+ *cp = '\0';
+ cp++;
+
+ if (getulong (cp, &remote_speed) == 0) {
+ remote_speed = 9600;
+ }
+ }
+ for (i = 0;
+ ( (speed_table[i].spd_baud != remote_speed)
+ && (speed_table[i].spd_name != -1));
+ i++);
+
+ if (-1 != speed_table[i].spd_name) {
+ speed_name = speed_table[i].spd_name;
+ }
+
+ /*
+ * Put the terminal in cooked mode with echo turned on.
+ */
+
+ GTTY (0, &termio);
+ termio.c_iflag |= ICRNL | IXON;
+ termio.c_oflag |= OPOST | ONLCR;
+ termio.c_lflag |= ICANON | ECHO | ECHOE;
+#ifdef CBAUD
+ termio.c_cflag = (termio.c_cflag & ~CBAUD) | speed_name;
+#else
+ termio.c_cflag = (termio.c_cflag) | speed_name;
+#endif
+ STTY (0, &termio);
+
+ pwd = getpwnam (name); /* local, no need for xgetpwnam */
+ if (NULL == pwd) {
+ return 0;
+ }
+
+ /*
+ * ruserok() returns 0 for success on modern systems, and 1 on
+ * older ones. If you are having trouble with people logging
+ * in without giving a required password, THIS is the culprit -
+ * go fix the #define in config.h.
+ */
+
+#ifndef RUSEROK
+ return 0;
+#else
+ return ruserok (remote_host, pwd->pw_uid == 0,
+ remote_name, name) == RUSEROK;
+#endif
+}
+#endif /* RLOGIN */
+